WO2019101079A1 - Intravascular shunt frame with improved developing visibility and intravascular stent - Google Patents

Abstract

Provided is an intravascular shunt frame with improved developing visibility, comprising a main tube, wherein at least one end of the main tube is provided with a sealing membrane, the sealing membrane is provided with at least one blood flow opening, and the sealing membrane has a developing structure on an edge of the least one blood flow opening. In a surgical procedure, the position of the developing structure can be clearly observed by means of an imaging device, facilitating quickly inserting a branch stent into the blood vessel opening. Further provided is an intravascular stent provided with the intravascular shunt frame with improved developing visibility.

Description

Vascular shunt frame and vascular stent for improving visualization visibility Technical field

The present invention relates to the field of implantable blood vessels, and more particularly to a blood vessel shunt frame for improving visualization visibility and a blood vessel stent provided with the blood vessel shunt frame.

Background technique

Aortic aneurysm refers to a local or diffuse abnormal expansion of the aortic wall, which causes symptoms by pressing the surrounding organs, and the tumorous rupture is its main risk. Often occurs in the ascending aorta arch, thoracic descending aorta, thoracic and abdominal aorta, and abdominal aorta. Aortic aneurysm can be divided into true aortic aneurysm and pseudo aortic aneurysm according to structure. Aortic aneurysm causes an increase in intravascular pressure, so it is progressively enlarged. If it develops for a long time, it will eventually rupture. The larger the tumor, the more likely it is to rupture. According to statistics, 90% of thoracic aortic aneurysms die within 5 years without surgery, and 75% of abdominal aortic aneurysms die within 5 years.

Aortic dissection is another serious aortic disease. Aortic dissection refers to the destruction of the medial thoracic aorta, hemorrhage in the vessel wall, and blood entering between the media and the adventitia of the vessel wall. Due to the impact of blood flow, once the aortic dissection is formed, the tear can be extended in the direction of blood flow, the interlayer and the false lumen are enlarged, and the true cavity is compressed. Therefore, the possible risks of patients with aortic dissection include: (1) the threat of complete rupture of the blood vessel, and the death rate is extremely high once the blood vessel is completely ruptured; (2) the interlayer is gradually enlarged, and the true cavity is compressed to provide blood supply to the distal end of the blood vessel. cut back. In most cases, the aortic dissection is secondary to a thoracic aortic aneurysm or coexisting with an aortic aneurysm. Oxford vascular disease studies in the United Kingdom have shown that the incidence of aortic dissection in the natural population is about 6/100,000 per year, more men than women, and the average age of onset is 63 years. The incidence of aortic dissection in China is much higher than that in Europe and the United States, and the age of onset is younger.

Aortic diseases may involve branch arteries. Once the branch arteries are involved, it is difficult to solve them through interventional methods. At present, intra-arterial treatment has been carried out at home and abroad, that is, the minimally invasive method is used to treat the arterial disease and improve blood supply by inserting a graft into the diseased artery into the artery, thereby achieving therapeutic purposes. The arterial stent in the vascular lumen is composed of a tubular rigid wire stent and a polymer film fixed to the outside of the tubular rigid wire stent, and the tubular rigid wire stent is folded by a flexible rigid wire through a Z-shape. Enclosed in a ring shape, and then a plurality of rings are stitched or bonded together with the polymer film to form a stent graft. In use, the stent graft is axially compressed and loaded into the conveyor, and the conveyor passes through the smaller femoral artery. The radial artery and the radial artery are sent to the diseased artery and then released. The elastic force of the wire stent automatically returns to a straight tubular shape and is closely attached to the inner wall of the aorta, thereby isolating the arterial lesion from the blood flow, thereby achieving the therapeutic purpose.

In the prior art, the brackets commonly used in the treatment of arterial branching include a chimney bracket, an integrated multi-branch bracket, and a window-opening bracket. These brackets are limited by the structure of the bracket, and often require temporary customization, or are prone to problems such as endoleaks, and Some of the plurality of modules that appear to have a plurality of modules include a plurality of split ports that are separated by a film and that are connectable to the branch stand, and a sealing film is disposed on an end surface of the end of the film holder that is away from the heart to Prevent internal leakage between multiple split ports on the end face. However, in use, the positional insertion between the branch bracket and the splitter port often encounters difficulties, that is, when releasing the plurality of branch brackets, it is difficult to find the corresponding split port of each branch bracket, and the application of the multi-cavity type is increased. The difficulty and time of endovascular treatment of the stent graft may even lead to the failure of endovascular treatment.

Summary of the invention

SUMMARY OF THE INVENTION It is an object of the present invention to provide a blood vessel shunt frame that facilitates improved visualization of a branch stent, and a blood vessel stent provided with the blood vessel shunt frame.

In order to solve the above technical problem, the present invention provides a blood vessel shunt frame for improving development visibility, comprising a main body tube, at least one end of which is provided with a sealing film, and at least one blood flow is opened on the sealing film. The sealing film is provided with a developing structure at an edge of at least one of the secondary blood flow ports.

The invention also provides a blood vessel stent for improving visualization visibility, comprising a branch stent and a blood vessel shunt frame, the blood vessel shunt frame comprising a main body tube, at least one end of the main body tube is provided with a sealing film, the sealing cover At least one blood flow opening is formed in the membrane, and the sealing coating is provided with a developing structure at an edge of at least one of the secondary blood flow openings. The end of the branching bracket is aligned with the developing structure of the edge of the secondary blood flow port on the sealing membrane of the blood vessel shunt frame to facilitate insertion of the end of the branching bracket through the secondary blood flow port Said in the blood vessel shunt frame.

The present invention provides a blood vessel shunt frame for improving development visibility by providing at least one blood flow port on a sealing film at one end of the main body tube, and at the edge of at least one of the second blood flow ports is provided in the sealing film Development structure. During the operation, the position of the developing structure can be clearly observed by the imaging device, so that the branch stent can be inserted into the secondary blood flow port conveniently and quickly, which reduces the difficulty and time for the intravascular treatment of the blood vessel shunt frame, and improves the treatment. Success rate.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments will be briefly described below. Obviously, the drawings in the following description are some embodiments of the present invention, which are common in the art. For the skilled person, other drawings can be obtained from these drawings without any creative work.

1 is a schematic perspective view of a blood vessel shunt frame according to a first embodiment of the present invention.

2a-2b are schematic views showing the structure of two preferred annular developing structures of the blood vessel shunt frame according to the first embodiment of the present invention.

3 is a schematic perspective view of a blood vessel shunt frame according to a second embodiment of the present invention.

4 is a schematic perspective view of a blood vessel shunt frame according to a third embodiment of the present invention.

FIG. 5 is a perspective view showing another perspective view of a blood vessel shunt frame according to a third embodiment of the present invention.

FIG. 6 is a schematic structural view of a blood vessel shunt frame according to a fourth embodiment of the present invention.

FIG. 7 is a schematic structural view of a blood vessel shunt frame according to a fifth embodiment of the present invention.

FIG. 8 is a schematic structural view of a blood vessel shunt frame according to a sixth embodiment of the present invention.

FIG. 9 is a schematic structural view of a blood vessel shunt frame according to a seventh embodiment of the present invention.

FIG. 10 is a schematic perspective structural view of a blood vessel shunt frame according to an eighth embodiment of the present invention.

Figure 11 is a perspective view showing the structure of a blood vessel shunt frame according to a ninth embodiment of the present invention.

Figure 12 is a perspective view showing the structure of a blood vessel shunt frame according to a tenth embodiment of the present invention.

Figure 13 is a perspective view showing another perspective of a blood vessel shunt frame according to a tenth embodiment of the present invention.

Figure 14 is a perspective view showing the structure of a blood vessel shunt frame according to an eleventh embodiment of the present invention. Figure 15 is a perspective view showing the structure of a blood vessel shunt frame according to a twelfth embodiment of the present invention.

Figure 16 is a perspective view showing the structure of a blood vessel shunt frame according to a thirteenth embodiment of the present invention.

Figure 17 is a schematic view showing the structure of a support member of a blood vessel shunt frame according to a thirteenth embodiment of the present invention.

Figure 18 is a perspective view showing the structure of a blood vessel shunt frame according to a fourteenth embodiment of the present invention.

Figure 19 is a perspective view showing the structure of a blood vessel shunt frame according to a fifteenth embodiment of the present invention.

Figure 20 is a perspective view showing the structure of a blood vessel shunt frame according to a sixteenth embodiment of the present invention.

Figure 21 is a perspective view showing the structure of a blood vessel shunt frame according to a seventeenth embodiment of the present invention.

Figure 22 is a perspective view showing the structure of a blood vessel shunt frame according to an eighteenth embodiment of the present invention.

Figure 23 is a perspective view showing the structure of a blood vessel shunt frame according to a nineteenth embodiment of the present invention.

Figure 24 is a perspective view showing the structure of a blood vessel shunt frame according to a twentieth embodiment of the present invention.

Figure 25 is a perspective view showing the structure of a blood vessel shunt frame according to a twenty-first embodiment of the present invention.

Figure 26 is a perspective view showing the structure of a blood vessel stent according to a twenty-second embodiment of the present invention.

Figure 27 is a perspective view showing the structure of a blood vessel stent according to a twenty-third embodiment of the present invention.

Figure 28 is a schematic view showing one of the states of use of the blood vessel stent according to the twenty-third embodiment of the present invention.

Figure 29 is a schematic view showing another use state of the blood vessel stent according to the twenty-third embodiment of the present invention.

Figure 30a is a schematic view showing the structure of one of the main body brackets of the blood vessel stent according to the twenty-third embodiment of the present invention.

Figure 30b is a schematic view showing the structure of another main body bracket of the blood vessel stent according to the twenty-third embodiment of the present invention.

Figure 30c is a schematic view showing the structure of another main body bracket of the blood vessel stent according to the twenty-third embodiment of the present invention.

Figure 30d is a schematic view showing the structure of another main body bracket of the blood vessel stent according to the twenty-third embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the present invention.

In addition, the description of the following embodiments is provided to illustrate the specific embodiments in which the invention may be practiced. Directional terms mentioned in the present invention, for example, "upper", "lower", "front", "back", "left", "right", "inside", "outside", "side", etc., only The directional terminology is used to describe and understand the invention in a better and clearer manner, and does not indicate or imply that the device or component referred to must have a particular orientation, in a particular orientation. The construction and operation are therefore not to be construed as limiting the invention.

In the description of the present invention, the "proximal end" of the present invention refers to one end near the position of the heart, and the "distal end" is one end away from the position of the heart. The height and the low in the present invention are relative to the main body tube coating, and the end surface beyond the main tube film is referred to as high, and the end surface of the main tube coating is not so low, which is only for convenience of description, and It is not to be understood as limiting the invention.

1 and 2a-2b, FIG. 1 is a perspective structural view of a blood vessel shunt frame for improving development visibility according to a first embodiment of the present invention; and FIG. 2a-2b is a first embodiment of the present invention. Schematic representation of the structure of two preferred annular development structures of a vascular shunt. The present invention provides a blood vessel shunt frame 100, which includes a main body tube 20, and at least one end of the main body tube 20 is provided with a sealing film 50. The sealing film 50 is provided with a main blood flow port 52 and at least one blood flow. The opening 54, the sealing film 50 is provided with a developing structure 80 at an edge of at least one of the secondary blood flow openings 54.

In this embodiment, the shape of the developing structure 80 is the same as the shape of the opening of at least one of the secondary blood flow openings 54, that is, when the opening shape of at least one of the secondary blood flow openings 54 is circular, elliptical, and shuttle. In the shape or other shape, the shape of the development structure 80 corresponds to a circle, an ellipse, a fusiform or other shape.

In this embodiment, the distal end of the main body tube 20 is provided with the sealing film 50, that is, the sealing film 50 is disposed at an end of the main body tube 20 far from the heart, and the sealing film 50 is provided. One of the secondary blood flow ports 54 and the main blood flow port 52 are opened.

The blood vessel shunt frame 100 provided by the present invention has at least one blood flow port 54 formed in the sealing film 50 at one end of the main body tube 20, and is disposed at the edge of at least one of the second blood flow ports 54 of the sealing film 50. There is a development structure 80. The position of the developing structure 80 can be clearly observed by the imaging device during the operation, and the branch bracket can be inserted into the secondary blood flow port 54 conveniently and quickly, that is, the branch bracket can be easily inserted, and the application of the blood vessel shunt frame 100 can be reduced. The difficulty and time of endovascular treatment improves the success rate of treatment.

In other embodiments, the proximal end of the main body tube 20 is provided with the sealing film 50, that is, the sealing tube 50 is disposed at an end of the main body tube 20 that is closer to the heart, and the sealing film is provided. The at least one secondary blood flow port 54 and the main blood flow port 52 are provided in the 50, and the sealing film 50 is provided with an annular developing structure 80 at an edge of at least one of the secondary blood flow openings 54.

In other embodiments, the proximal or distal end of the main body tube 20 is provided with a sealing film 50, and each sealing film 50 is provided with at least one of the secondary blood flow port 54 and the main blood flow port 52. The sealing film 50 is provided with an annular developing structure 80 at the edge of at least one of the secondary blood flow openings 54.

As shown in FIG. 2a, the developing structure 80 includes a support member 82 and a developing member 84. The support member 82 is a metal ring or a metal rod adapted to the shape of the edge of at least one of the secondary blood flow ports 54, and the developing member 84 is a developing wire wound continuously or intermittently on the metal ring or the metal rod. The shape and size of the support member 82 are the same as the shape and size of the opening of at least one of the secondary blood flow openings 54, that is, when at least one of the secondary blood flow openings 54 has a circular shape, an elliptical shape, or a fusiform shape. Or other shapes, the shape of the support member 82 corresponds to a circle, an ellipse, a fusiform or other shape. The developing member 84 is a developing alloy wire wound on the support member 82, and the developing alloy wire may be selected from gold, platinum, platinum-tungsten, palladium, platinum, rhodium, ruthenium, iridium, or an alloy of these metals. Or complex. The developing alloy wire has a diameter of 0.10-0.40 mm.

In this embodiment, the support member 82 is made of a metal ring made of a memory alloy, the metal ring is adapted to the edge shape of the secondary blood flow port 54, and the developing member 84 is continuously or intermittently wound around the metal ring. The upper developing wire, preferably, the developing alloy wire is a twisted wire. Since the developing structure 80 is developable and has a ring-shaped structure, the position of the developing structure 80 can be clearly observed by the image forming apparatus during the surgery, that is, it can be observed that the developing structure 80 is the secondary blood flow port 54. The edges are surrounded, rather than a discrete development point, so that it is more convenient and quick to insert a branch bracket into the secondary blood flow port 54.

In other embodiments, the support member 82 is made of a memory alloy doped with a developing material, such as a niobium-containing nitinol wire, and the support member 82 has a wire diameter of 0.10-0.40 mm. The outer diameter of the support member 82 is 12-16 mm. Since the support member 82 is made of an alloy containing a developing material, the support member 82 can be directly used as a developing structure without being disposed on the developing member 84 on the support member 82. The position of the support member 82 can be clearly observed by the imaging device during the operation, and the branch bracket can be inserted into the secondary blood flow port 54 conveniently and quickly, which is convenient to use.

In other embodiments, various display marks may be disposed on the developing structure 80, such as the type, position or size of the corresponding secondary blood flow port 54 on the developing structure 80, so that the sub-cavity can be better marked. Channel, convenient for the surgeon to establish a sub-cavity channel.

In other embodiments, as shown in FIG. 2b, the developing structure 80a is a plurality of developing points 84a disposed at the edge of at least one of the secondary blood flow ports 54, and the plurality of developing points 84a are along at least one of the secondary blood flow ports 54. The edge array is at least one turn. That is, the developing structure 80 may be a circle of development dots 84a fixed to the edge of the sealing film 50 at the secondary blood flow port 54, which may be stitched, stamped, hot pressed, set or attached. It is fixed to the sealing film 50 or the support member 82.

In other embodiments, the edge of the main blood flow port 52 is also provided with a development structure 80 that is a development point that is continuously or intermittently secured to the sealing film 50 at the edge of the main blood flow port 52.

In other embodiments, the support member 82 is a metal ring or a metal rod adapted to the shape of the edge of the main blood flow port 52 or the secondary blood flow port 54, and the developing member 84 is continuously or intermittently wound around the metal ring or A developing wire on a metal rod.

In other embodiments, at least one turn of the developing material may be embedded, attached, stamped or heat pressed on the outer surface of the support member 82, such as a developing alloy wire is placed on the support member 82, or At least one turn of the developed alloy wire is attached to the outer surface of the support member 82. Preferably, the support member is provided with, attached, stamped or wound with a twisted wire.

In other embodiments, the distal end of the body tube 20 may also be provided with the above-described development structure 80 at the edge of the main blood flow port 52.

In other embodiments, the developing member 84 is a development structure that is embedded or attached to the outer surface of the metal ring or metal rod.

At least one daughter tube 30 is disposed in the main body tube 20, and at least one of the child tubes 30 is abutted to at least one of the secondary blood flow ports 54. That is, the daughter tube 30 communicates with the secondary blood flow port 54. The sub-tube 30 is formed by a partition film 31, and a semi-tubular separator film 31 is formed to surround the side wall of the main body tube 20, or an arc-shaped partition film 31 is formed around the side wall of the main body tube 20. When the branch bracket is inserted into the secondary blood flow port 54, the position of the developing structure 80 at the edge of the secondary blood flow port 54 can be clearly observed by the imaging device, and the branch bracket can be easily inserted, and the daughter tube 30 can extend the branch bracket. The proximal anchoring zone can define a branching bracket to increase the stability of the branching stent after release. The axial length of the daughter tube 30 may be less than or equal to the axial length of the body tube 20. In the case where a plurality of sub-tubes 30 are provided in the same manner, the lengths of the sub-tubes 30 may be the same or different.

In other embodiments, the proximal tube nozzle 30 is provided with a development structure 80 at the proximal end of the nozzle port 30. The design of the development structure 80 is the same as that of the development structure 80 at the edge of the secondary blood flow port 54. By providing a developing structure at the edge of the proximal and distal nozzles (and corresponding secondary blood flow ports) of the daughter tube 30, it is convenient for the operator to find the path of the daughter tube more clearly during the operation. The establishment of the guiding path of the guiding guide wire of the branch bracket saves the operation time and reduces the risk of surgery.

In other embodiments, the developing structure 80 may also be disposed on the separation film 31 of the daughter tube 30. Preferably, the separation film 31 may be provided with continuous or intermittent from the proximal end to the distal end in the axial direction. A plurality of development points are fixed to the separation film 31 by stitching, stamping, hot pressing, setting or affixing. The axially disposed development points may be arranged in a row of 1-4 circumferentially. The axially disposed development point further marks the direction of extension of the daughter tube, allowing the surgeon to perform the procedure more quickly during the procedure.

The main body tube 20 includes a tubular main body cover 22, and a main body tube support bobbin 24 fixed to a wall surface of the main body cover 22. The daughter tube 30 is surrounded by a tubular partitioning membrane 31 to divide the lumen of the body tube 20 into a body tube lumen 25 and a daughter tube lumen 33. The distal end of the main body lumen 25 communicates with the main blood vessel port 52, and the sub-body lumen 33 is remote from the secondary blood flow port 54. The main body tube 20 is a main body structure of the blood vessel shunt frame 100, and the main body film 22 is a tubular structure whose shape of the lateral end surface is a circular or elliptical shape that fits the blood vessel. The main body tube support frame 24 is sewn on the main body film 22, and the main body tube support frame 24 is formed by a plurality of annular wave-shaped support rods 242 along the axial direction of the main body film 22. Each of the annular wave support rods 242 may be a high wave support rod or a high and low wave support rod or the like. The high wave support rod means that the heights of the respective peaks on the annular wave shape support rod 242 are the same, and the heights of the respective troughs are also the same, that is, Each peak and each trough are on the same plane. The high and low wave support rods mean that the heights of the respective peaks on the annular wave support rod 242 are different, and the heights of the respective valleys may also be different.

The main body tube support frame 24 includes a plurality of Z-shaped or sinusoidal waveform-shaped annular wave support rods 242 which are arranged along the axial interval of the main body film 22. Each zigzag or sinusoidal waveform of each annular wave support rod 242 includes a peak 2421, a valley 2423, and a connecting rod 2425 connected between the peak 2421 and the valley 2423. Each of the annular wave support rods 242 is woven by a superelastic nickel-titanium wire, and the superelastic nickel-titanium alloy wire has a wire diameter (ie, diameter) ranging from 0.3 mm to 0.55 mm. Each of the annular wave-shaped support rods 242 is provided with a connecting sleeve 7 , and the connecting sleeve connects opposite ends of the annular wave-shaped support rod 242 , that is, the opposite ends of the annular wave-shaped support rod 242 are accommodated In the connecting sleeve, the two ends of the nickel-titanium wire are then fixed to the inside of the connecting sleeve by mechanical pressing or welding.

In this embodiment, the annular wave-shaped support rod 242 is woven by a 0.5 mm diameter nickel-titanium wire, the number of Z-shaped or sine waves is nine, and the vertical height of the annular wave-shaped support rod 242 is 8-15 mm.

In other embodiments, the body tube support frame 24 can be a woven mesh structure or a cut mesh structure.

The main body film 22 is made of polyester cloth, PTFE, PET or other polymer material, and the main body tube supporting frame 24 is stitched on the main body film 22 by stitches, that is, the stitches can be along each The waveform of the annular wave-shaped support rod 242 runs along with the entire body tube supporting the skeleton 24. The suture can also be stitched to the body covering 22 by a plurality of non-equally spaced stitching knots. The diameter of the suture may be selected from 0.05 mm to 0.25 mm. Alternatively, the main body support frame 24 is fixedly coupled to the main body film 22 by heat pressing.

The sub-tube inner cavity 33 is independently surrounded by the partition film 31, and the cavity between the partition film 31 and the main body film 22 is the main body tube cavity 25. By this design, when the blood vessel shunt frame 100 is pressed, the overall diameter of the blood vessel shunt frame 100 can be reduced, so that the diameter of the transport system for assembling the sheath tube can be reduced, and the blood vessel shunt frame 100 can be facilitated. Delivery. The diameter of the main body lumen 25 is larger than the diameter of the sub-body lumen 33. The number of the sub-tubes 30 can be set according to actual needs, generally 1-4, preferably 1-3. The transverse end faces of the main body lumen 25 and the daughter tube lumen 33 are circular, elliptical, fusiform or irregular curved.

In this embodiment, the number of the daughter tubes 30 is one, and the daughter tubes 30 are in contact with the inner surface of the main body tube 20 and adjacent to the main blood flow port 52 adjacent to the secondary blood flow port 54. The midpoint of the edge. The blood vessel shunt 100 includes a circular body lumen 25 and a circular daughter lumen 33.

The sealing film 50 is disposed at the distal end of the main body tube 20, the sealing film 50 is sealingly connected to the main body film 22, and the main blood flow port 52 and the secondary blood flow port 54 are both opened in the On the sealing film 50, the distal end of the separation film 31 is sealingly connected to the sealing film 50 corresponding to the secondary blood flow port 54. That is, the sealing film 50 connects the main body film 22 and the separation film 31 together, and closes the gap between the main body tube 20 and the sub-body tube 30. The opening area of the main blood flow port 52 is smaller than the radial cross-sectional area of the main body film 22, and the opening area of the secondary blood flow port 54 is smaller than the opening area of the main blood flow port 52.

In other embodiments, the opening area of the main blood flow port 52 may also be the same as the opening area of the secondary blood flow port 54.

The sealing film 50 may be disposed along the radial direction of the body tube 20 or approximately radially.

In this embodiment, the sealing film 50 is located at the distal end of the main body tube 20, and is sewn together with the main body film 22 and the separation film 31 by sewing. The distal end surface of the secondary blood flow port 54 is lower than the distal end surface of the main blood flow port 52, and the sealing film 50 is recessed toward the secondary blood flow port 54 so that the sealing film 50 and the side of the main body tube 20 The wall covering forms a bell mouth, i.e., the sealing film 50 is inclined toward the secondary blood flow port 54. The sealing film 50 is connected to the main blood flow port 52, the secondary blood flow port 54, the main body film 22, and the inclined surface of the partition film 31, and the angle between the inclined surface and the central axis of the main body tube 20 is 5 to 80 degrees, preferably 15-60 degrees.

Please refer to FIG. 3. FIG. 3 is a schematic perspective structural view of a blood vessel shunt frame according to a second embodiment of the present invention. The structure of the blood vessel shunt frame according to the second embodiment of the present invention is similar to that of the first embodiment, except that in the second embodiment, the sealing film 50 is at the edge of the main blood flow port 52. A developing structure 90 is provided, which may be provided in an annular structure, or a non-annular structure, including a half circle development at the edge of the main blood flow port 52 continuously or intermittently. structure. The developing structure 90 can refer to the setting of the developing structure 80, and will not be described again.

Please refer to FIG. 4. FIG. 4 is a schematic perspective structural view of a blood vessel shunt frame according to a third embodiment of the present invention. The structure of the blood vessel shunt frame according to the third embodiment of the present invention is similar to that of the first embodiment, except that in the third embodiment, the second blood flow port 54 is opened on the sealing film 50. The sealing film 50 is provided with a developing structure 80 at the edge of each of the secondary blood flow ports 54. The sealing film 50 is parallel to the radial plane of the body tube 20, that is, the sealing film 50 is a plane perpendicular to the central axis of the body tube 20. FIG. 5 is a schematic perspective view of another perspective of FIG. 4. FIG. At least one daughter tube 30 is disposed in the main body tube 20, and at least one of the child tubes 30 is abutted to at least one of the secondary blood flow ports 54. That is, the daughter tube 30 communicates with the secondary blood flow port 54. The daughter tube 30 is independently formed by the tubular separator film 31, or the semi-tubular separator film 31 is formed in close contact with the body tube wall 22.

Please refer to FIG. 6. FIG. 6 is a schematic structural diagram of a blood vessel shunt frame according to a fourth embodiment of the present invention. The structure of the blood vessel shunt frame according to the fourth embodiment of the present invention is similar to that of the third embodiment, except that in the fourth embodiment, the sealing film 50 is provided with a circular main blood flow port 52 and Two circular secondary blood flow ports 54, two of which are located on a side remote from the main blood flow port 52. The main blood flow port 52 and the two second blood flow ports 54 are tangential to each other, and the main blood flow port 52 and each blood flow port 54 are inside the main body film 22 of the main body tube 20. The surface is tangent. The sealing film 50 is provided with a developing structure 80 at the edge of each blood flow port 54; further, a developing structure 80 is also disposed at the edge of the proximal end of the child tube nozzle 30.

In other embodiments, the end surface of the secondary blood flow port 54 is lower than the end surface of the main blood flow port 52, that is, the sealing film 50 is recessed at the secondary blood flow port 54 such that the sealing film 50 faces the The secondary blood flow port 54 is inclined.

Please refer to FIG. 7. FIG. 7 is a schematic structural diagram of a blood vessel shunt frame according to a fifth embodiment of the present invention. The structure of the blood vessel shunt frame according to the fifth embodiment of the present invention is similar to that of the fourth embodiment, except that in the fifth embodiment, the sealing film 50 is provided with three circular times of different sizes. The blood flow port 54, three of the secondary blood flow ports 54 are located on a side away from the main blood flow port 52. The main blood flow port 52 and the three blood flow ports 54 are tangential to each other, and the main blood flow port 52 and each blood flow port 54 are inside the main body film 22 of the main body tube 20. The surface is tangent. The sealing film 50 is provided with a developing structure 80 at the edge of each blood flow port 54; further, a developing structure 80 is also disposed at the edge of the proximal end of the child tube nozzle 30.

In other embodiments, the side of the sealing film 50 away from the main blood flow port 52 may have a plurality of blood flow ports 54. The secondary blood flow ports 54 and the main blood flow port 52 may be tangent to each other. They can also be spaced apart from each other.

Please refer to FIG. 8. FIG. 8 is a schematic structural diagram of a blood vessel shunt frame according to a sixth embodiment of the present invention. The structure of the blood vessel shunt frame according to the sixth embodiment of the present invention is similar to that of the fourth embodiment, except that in the sixth embodiment, the central portion of the sealing film 50 is provided with a circular main blood flow port 52. a second blood flow port 54 is defined on each of the opposite sides of the sealing film 50, that is, the center of the main blood flow port 52 is located on the central axis of the main body tube 20, and the two blood flow ports 54 are along The central axis of the main body tube 20 is symmetrical. Each blood flow port 54 is tangential to the main blood flow port 52, and the secondary blood flow port 54 is tangential to the inner surface of the main body film 22. The sealing film 50 is provided with a developing structure 80 at the edge of each blood flow port 54; further, a developing structure 80 is also disposed at the edge of the proximal end of the child tube nozzle 30.

Please refer to FIG. 9. FIG. 9 is a schematic structural diagram of a blood vessel shunt frame according to a seventh embodiment of the present invention. The structure of the blood vessel shunt frame according to the seventh embodiment of the present invention is similar to that of the sixth embodiment, except that in the seventh embodiment, the sealing film 50 is opened around the main blood flow port 52. Four secondary blood flow ports 54, four annular blood flow ports 54 along the circular annular array of the primary blood flow ports 52. Each blood flow port 54 is tangential to the main blood flow port 52, and the secondary blood flow port 54 is tangential to the inner surface of the main body film 22. The sealing film 50 is provided with a developing structure 80 at the edge of each blood flow port 54; further, a developing structure 80 is also disposed at the edge of the proximal end of the child tube nozzle 30.

In other embodiments, the sealing membrane 50 has a plurality of secondary blood flow openings 54 around the main blood flow opening 52, and a plurality of secondary blood flow openings 54 along the circular annular array of the primary blood flow openings 52. Each blood flow port 54 may be tangent or non-tangential to the main blood flow port 52, and each blood flow port 54 may be tangent or non-tangential to the inner surface of the main body film 22.

Please refer to FIG. 10. FIG. 10 is a schematic structural diagram of a blood vessel shunt frame according to an eighth embodiment of the present invention. The structure of the blood vessel shunt frame according to the eighth embodiment of the present invention is similar to that of the first embodiment, except that in the eighth embodiment, at least one support rod 60 is fixed on the sealing film 50, at least One end of the support rod 60 is connected to the edge of the primary blood flow port 52 adjacent to the secondary blood flow port 54, and the other end of the support rod 60 is connected to the edge of the developing structure 80. The support rod 60 can not only fix the direction of the sealing film 50, so that the sealing film 50 extends forward rather than being folded or tilted toward the secondary blood flow port 54 or the main blood flow port 52, that is, the sealing cover can be made The film 50 is completely flattened without folding, so as not to interfere with the secondary blood flow port 54 or the main blood flow port 52, and the sealing film 50 can be prevented from blocking the secondary blood flow port 54 or the main blood flow port 52; 60 can also provide guidance to a branching bracket that is inserted into the secondary blood flow port 54 of the blood vessel shunt 100, that is, the traction guide wire of the branching bracket can slide into the smooth sealing membrane 50. In the secondary blood flow port 54, the branch bracket is conveniently inserted to improve work efficiency.

Please refer to FIG. 11. FIG. 11 is a schematic structural diagram of a blood vessel shunt frame according to a ninth embodiment of the present invention. The structure of the blood vessel shunt frame according to the ninth embodiment of the present invention is similar to that of the eighth embodiment, except that in the ninth embodiment, the sealing film 50 is provided with two tangent secondary blood. The flow port 54, the sealing film 50 is provided with a developing structure 80 at the edge of each blood flow port 54. Two of the daughter tubes 30 are disposed in the main body lumen 25 of the main body tube 20, and the distal ends of the two sub-tube tubes 30 respectively communicate two of the secondary blood flow ports 54. The two blood flow ports 54 are located on a side away from the main blood flow port 54, and the outer sides of the two child tubes 30 are in contact with the inner wall of the main body tube cavity 25. The support rod 60 is fixed to the sealing film 50 and is connected between the edge of the main blood flow port 52 adjacent to the secondary blood flow port 54 and the tangent point of the two second blood flow ports 54.

In this embodiment, one end of the support rod 60 is connected to a midpoint of the main blood flow port 52 adjacent to the edge of the secondary blood flow port 54, and the other end of the support rod 60 is connected to the two second blood flows. The tangent point of port 54. The support rod 60 of the blood vessel shunt frame can prevent the sealing film 50 from being folded, and can easily insert two branch brackets.

Referring to FIG. 12, FIG. 12 is a schematic structural diagram of a blood vessel shunt frame according to a tenth embodiment of the present invention. The structure of the blood vessel shunt frame according to the tenth embodiment of the present invention is similar to that of the ninth embodiment, except that in the tenth embodiment, the support film 50 is fixed with two support rods 60, two The root support rods 60 are respectively connected to the edges of the two blood flow ports 54 and the main blood flow port 52 adjacent to the edge of the secondary blood flow port 54. The two support rods 60 can support the sealing film 50 more stably, prevent the sealing film 50 from being folded, and also facilitate the insertion of the branch holder. One end of each of the support rods 60 is connected to the edge of the corresponding secondary blood flow port 54 adjacent to the main blood flow port 52, and the other end is connected to the end of the main blood flow port 52 adjacent to the edge of the secondary blood flow port 54.

FIG. 13 is a perspective view showing another perspective view of a blood vessel shunt frame according to a tenth embodiment of the present invention. An annular wave supporting rod 35 is fixed to the partitioning film 31 of each of the sub-tubes 30, and the annular wave-shaped supporting rod 35 can be set according to the shape of the partitioning film 31. That is, a wavy support rod 35 may be fixed on the partitioning film 31, or a plurality of undulating support rods 35 spaced apart in the axial direction of the partitioning film 31, and the undulating support rods 35 enclose the partitioning cover The daughter tube of the membrane 31 supports the skeleton. The structure, shape and material of the wave-shaped support bar 35, which may be an annular or open-loop wave-shaped support bar 35, are similar to the ring-shaped wave-shaped support bar 242 on the main body tube 20, and will not be described herein.

In other embodiments, the two blood flow ports 54 on the sealing film 50 may not be tangent, and the two support bars 35 are fixed on the sealing film 50 and respectively connected to the The edge of the main blood flow port 52 is between the corresponding secondary blood flow port 54.

In other embodiments, the woven mesh-shaped daughter tube support skeleton may also be fixed on the separation film 31.

In the embodiment, the side of the main body membrane 22 away from the secondary blood flow port 54 can be cut into a V shape or a U shape, and the body tube 22 can be added when the main body tube 22 is used with the branch bracket or other branch brackets. The visibility of the perimeter of 30 makes it easier to dock the branch brackets. The above structure may be disposed at the distal end of the main body tube 22, or may be disposed at the proximal end of the main body tube 22, or both the distal end and the proximal end of the main body tube 22.

Referring to FIG. 14, FIG. 14 is a schematic structural diagram of a blood vessel shunt frame according to an eleventh embodiment of the present invention. The structure of the blood vessel shunt frame according to the eleventh embodiment of the present invention is similar to that of the tenth embodiment, except that a support rod 60, that is, a sealing film 50, is added to the tenth embodiment. Three support rods 60 are fixed thereon, three support rods 60 are spaced apart, and a support rod 60 located in the middle is connected to the tangential point of the two secondary blood flow ports 54 adjacent to the primary blood flow port 52. Between the edges of the mouth 54, two support rods 60 on either side are connected between the edges of the two secondary blood flow openings 54 and the edges of the primary blood flow opening 52 adjacent the secondary blood flow openings 54, respectively. The sealing film 50 is supported by the three support rods 60, so that the sealing film 50 can be more stable, and does not fold or interfere with or block the secondary blood flow port 54 or the main blood flow port 52, so that the main body tube 20 and the daughter tube are The blood flow in 30 is smoother and it is easy to insert the branch bracket.

Referring to FIG. 15, FIG. 15 is a schematic structural diagram of a blood vessel shunt frame according to a twelfth embodiment of the present invention. The structure of the blood vessel shunt frame according to the twelfth embodiment of the present invention is similar to that of the tenth embodiment, except that two support rods 60, that is, the sealing film 50, are added to the tenth embodiment. Four support rods 60 are fixedly spaced apart, and two support rods 60 are connected between the edge of one secondary blood flow port 54 and the edge of the primary blood flow port 52 adjacent to the secondary blood flow port 54, and the other two supports The rod 60 is coupled between the edge of the other secondary blood flow port 54 and the main blood flow port 52 adjacent the edge of the secondary blood flow port. In this embodiment, the sealing film 50 is supported by the four supporting rods 60, so that the sealing film 50 can be more stable, and the secondary blood flow port 54 or the main blood flow port 52 can be interfered or blocked without folding, so that the main body tube The blood flow in the 20 and the daughter tube 30 is smoother and it is convenient to insert the branch bracket.

In the present embodiment, the four support rods 60 are symmetrical with respect to the plane of the central axis of the main body tube 20 along the tangential point passing through the two secondary blood flow ports 54. The two support rods 60 in the middle are in an "eight" shape, and each support rod 60 is connected to the middle of the edge of the main blood flow port 52 and the edge of the corresponding secondary blood flow port 54; two support rods on both sides 60 has an inverted "eight" shape, and each of the support rods 60 is coupled to the end of the edge of the main blood flow port 52 and the edge of the corresponding secondary blood flow port 54.

In other embodiments, more than four support rods 60, such as five, six, etc., may be fixed on the sealing film 50, and a part of the support rods 60 are connected to one of the support rods connected to one of the support rods. An edge of the secondary blood flow port 54 is adjacent to an edge of the primary blood flow port 52 adjacent to the secondary blood flow port 54, and another portion of the support rod 60 is coupled to an edge of the other of the secondary blood flow ports 54. The main blood flow port 52 is adjacent to the edge of the secondary blood flow port 54.

In other embodiments, the sealing film 50 is provided with a plurality of the secondary blood flow ports 54. The sealing film 50 is fixed with a plurality of supporting rods 60 corresponding to the plurality of the secondary blood flow ports 54, each supporting A rod 60 is coupled between the edge of the corresponding secondary blood flow port 54 and the edge of the primary blood flow port 52 adjacent the secondary blood flow port 54.

Referring to FIG. 16, FIG. 16 is a schematic structural diagram of a blood vessel shunt frame according to a thirteenth embodiment of the present invention. The structure of the blood vessel shunt frame according to the thirteenth embodiment of the present invention is similar to that of the tenth embodiment, except that the structure of the support rod 60a in the thirteenth embodiment and the support in the tenth embodiment The structure of the rod 60 is different. As shown in FIG. 17, the support rod 60a includes a first rod body 64 and a second rod body 65 obliquely connected to one end of the first rod body 64, the first rod body 64 and the The angle a between the second rods 65 is in the range of 24 to 130 degrees. The first rod 64 of each support rod 60a is fixed to the sealing film 50, and the second rod 65 is fixed to the side wall of the corresponding sub-tube 30, that is, the second rod 65 is fixed to the corresponding sub-tube 30. Separated from the film 31. The intersection of the first rod 64 and the second rod 65 is located at the intersection of the sealing film 50 and the sidewall of the corresponding daughter tube 30, that is, the first rod 64 and the first The intersection of the two rods 65 is located at the intersection of the sealing film 50 and the partition film 31 of the corresponding daughter tube 30.

The first rod body 64 of the support rod 60a in the embodiment is fixed on the sealing film 50 to support the sealing film 50; the second rod body 65 is fixed on the partitioning film 31 to support not only the sealing film 50, Moreover, the corresponding partitioning film 31 can also be positioned, and the radial supporting force of the sub-tube 30 can be enhanced, so that the sealing film 50 and the sidewall coating of the main body tube 20 enclose a stable bell mouth structure, so that the main body tube 20 The blood flow in the daughter tube 30 is smoother and it is convenient to insert the branch bracket.

In other embodiments, one or more support rods 60a may be disposed on the sealing film 50. When the sealing film 50 is provided with a support rod 60a, the first rod 64 of the support rod 60a is fixed to the sealing film 50, and the second rod 65 is fixed to the tangent portion of the two sub-tubes 30.

Referring to FIG. 18, FIG. 18 is a schematic structural diagram of a blood vessel shunt frame according to a fourteenth embodiment of the present invention. The structure of the blood vessel shunt frame according to the fourteenth embodiment of the present invention is similar to that of the thirteenth embodiment, except that in the fourteenth embodiment, the sealing film 50 is provided with four support rods 60a, four. The root support rods 60a are connected end to end to form a "W" shaped support member, and the central portion of the "W" shaped support member is folded toward the same side. The first rod 64 of each support rod 60a is fixed on the sealing film 50, and the second rod 65 of the support rod 60a is fixed on the partition film 31 of the corresponding daughter tube 30, the first rod 64 and the second rod 64 The intersection of the rods 65 is located at the intersection of the sealing film 50 and the separation film 31 of the corresponding daughter tube.

In this embodiment, the four support rods 60a are of a unitary symmetrical structure, and the connection points of the first rods 64 of the two middle support rods 60a are connected to the middle of the edge of the main blood flow port 52 adjacent to the secondary blood flow port 54. That is, the middle two support rods 60a enclose an inverted "V"-shaped structure, and the second rods 65 of the two middle support rods 60a are respectively fixed to the separation film 31 of the two sub-tubes 30. The first rods 64 of the two support rods 60a on the two sides are respectively connected to the edges of the corresponding secondary blood flow ports 54 and the two ends of the edge of the main blood flow port 52, and the bottom ends of the two second rod bodies 65 are respectively respectively in the middle The bottom ends of the second rods 65 of the two support rods 60a are connected and fixed to the partition film 31 of the corresponding daughter tube 30, that is, the two second rods on the partition film 31 of each of the daughter tubes 30. 65 encloses a "V" shaped structure.

The first rods 64 of the four support rods 60a in this embodiment are fixedly spaced on the sealing film 50 to have a better supporting effect on the sealing film 50; the second rods 65 of the four supporting rods 60a are enclosed in two The "V"-shaped support structure is respectively fixed on the partitioning film 31 of the two sub-tubes 30, and further can enhance the radial supporting force of the sub-tube 30, so that the sealing film 50 and the side wall of the main body tube 20 are covered. The membrane encloses a more stable bell mouth structure, so that the blood flow in the main body tube 20 and the daughter tube 30 is smoother, and the branch bracket is easily inserted.

Referring to FIG. 19, FIG. 19 is a schematic structural diagram of a blood vessel shunt frame according to a fifteenth embodiment of the present invention. The structure of the blood vessel shunt frame according to the fifteenth embodiment of the present invention is similar to that of the first embodiment, except that in the fifteenth embodiment, the sealing film 50 is adjacent to one of the main blood flow ports 52. A positioning rod 70 is provided at the edge of the side. The positioning rod 70 is made of a memory alloy wire, preferably a nickel titanium alloy wire. When the main body bracket is inserted into the main blood flow port 52 of the main body tube 20, the positioning rod 70 can be in close contact with the outer surface of the main body bracket, so that the sealing film 50 and the main body bracket are The outer surface is closely fitted to prevent internal leakage, and also facilitates insertion of the main body bracket into the main blood vessel port 52 of the main body tube 20, increasing the compatibility of the main body bracket and the shunt, and making the main body bracket and the shunt joint more stable.

The positioning rod 70 extends along an edge of the side of the sealing film 50 adjacent to the main blood vessel opening 52, and opposite ends of the positioning rod 70 are respectively connected to the main body tube 20. Thus, the positioning rod 70 can be a linear rod, a wave rod, a curved rod or other shape rod.

In other embodiments, the positioning rod 70 is also provided with the developing structure 80, that is, the positioning rod 70 is continuously or intermittently wound around the developing wire, or the outer surface of the positioning rod 70 is set or attached. Developing material.

In other embodiments, the positioning rod 70 is made of an alloy containing a developing material, and therefore, the positioning rod 70 can also be used as a developing member without being disposed on the developing member 84 on the positioning rod 70. The position of the positioning rod 70 can be clearly observed by the imaging device during the operation, and the main body bracket can be inserted into the main blood flow port 52 conveniently and quickly, which is convenient to use.

In this embodiment, the positioning rod 70 is a wave-shaped structure formed by connecting three arc-shaped rods, and the positioning rod 70 includes a first arc-shaped rod 72 located in the middle, and is connected to the first circular arc. Two sections of the second arcuate rod 74 at opposite ends of the rod 72 have the same structure and are symmetric along the midpoint of the first arcuate rod 72. The second arcuate rod 74 is smoothly connected to the first arcuate rod 72, and the first arcuate rod 72 and the two sections of the second arcuate rod 74 are of a unitary structure, The positioning rod 70 is formed by bending the alloy wire.

The middle portion of the first circular arc rod 72 is curved toward the main blood vessel port 52, and the middle portion of each of the second circular arc rods 74 is curved toward a side away from the main blood vessel port 52, that is, each of the The middle of the second arcuate rod 74 is curved toward one side of the secondary blood flow port 54.

The diameter of the positioning rod 70 is between 0.10 and 0.40 mm. In the embodiment, the diameter of the positioning rod 70 is 0.20-0.30 mm.

In other embodiments, the first arc bar 72 and the two segments of the second arc bar 74 may be a split structure, that is, the first arc bar 72 and the two segments of the second arc The rods 74 are integrally connected by mechanical compression or welding.

In other embodiments, the sealing film 50 may also be provided with a positioning rod 70 at the edge of the at least one blood flow port 54 . The positioning rod 70 is a corresponding annular rod with the secondary blood flow port 54 . . When the branching bracket is inserted into the secondary blood flow port 54, the positioning rod 70 at the edge of the at least one blood flow port 54 can position the branching bracket in the daughter tube 30, that is, the positioning rod 70 The sealing film 50 can be sealed and adhered to the outer surface of the branch bracket to prevent internal leakage.

Referring to FIG. 20, FIG. 20 is a schematic structural diagram of a blood vessel shunt frame according to a sixteenth embodiment of the present invention. The structure of the blood vessel shunt frame according to the sixteenth embodiment of the present invention is similar to that of the fifteenth embodiment, except that in the sixteenth embodiment, the sealing film 50 is provided with the eighth embodiment. The support rod 60 is connected between the positioning rod 70 and the edge of at least one of the secondary blood flow openings 54.

In this embodiment, one end of the support rod 60 is connected to the middle of the first circular arc rod 72, and the other end of the support rod 60 is connected to the edge of the developing structure 80.

Referring to FIG. 21, FIG. 21 is a schematic structural diagram of a blood vessel shunt frame according to a seventeenth embodiment of the present invention. The structure of the blood vessel shunt frame according to the seventeenth embodiment of the present invention is similar to that of the sixteenth embodiment, except that in the seventeenth embodiment, the sealing film 50 is provided with two tangency The secondary blood flow port 54, the two body tubes 30 are disposed in the main body tube 25 of the main body tube 20, and the distal ends of the two child tubes 30 respectively connect the two blood flow ports 54. The support rod 60 is fixed to the sealing film 50 and is connected between the positioning rod 70 and the tangent point of the two blood flow ports 54.

In this embodiment, one end of the support rod 60 is fixed on the first circular rod 72 of the positioning rod 70, preferably at a midpoint of the first circular rod 72, and the support rod 60 is The other end is fixed between the tangent points of the two developing structures 80.

Referring to FIG. 22, FIG. 22 is a schematic structural diagram of a blood vessel shunt frame according to an eighteenth embodiment of the present invention. The structure of the blood vessel shunt frame according to the eighteenth embodiment of the present invention is similar to that of the seventeenth embodiment, except that in the eighteenth embodiment, the sealing film 50 is fixed at two intervals. The support rod 60 and the two support rods 60 are respectively connected between the edges of the two blood flow ports 54 and the positioning rod 70.

In this embodiment, the two support rods 60 have an inverted "eight" shape, and one end of each support rod 60 is fixed on the second circular arc rod 74 of the positioning rod 70, and the other end is fixed to the corresponding developing structure. The edge of 80.

In other embodiments, the two support rods 60 may be fixed to the sealing film 50 in parallel with each other, and each of the support rods 60 is connected to the edge of the corresponding secondary blood flow port 54 and the positioning rod 70. between.

Referring to FIG. 23, FIG. 23 is a schematic structural diagram of a blood vessel shunt frame according to a nineteenth embodiment of the present invention. The structure of the blood vessel shunt frame according to the nineteenth embodiment of the present invention is similar to that of the eighteenth embodiment, except that the nineteenth embodiment adds a support rod to the eighteenth embodiment. 60, that is, three support rods 60 are fixed on the sealing film 50, three support rods 60 are spaced apart, and one support rod 60 located in the middle is connected to the tangent point of the two secondary blood flow ports 54 and the first circle Between the arc bars 72, two support bars 60 on both sides are connected between the edges of the two secondary blood flow openings 54 and the two second circular arc bars 74 of the positioning rod 70, respectively. By supporting the sealing film 50 by the three support rods 60 and the positioning rod 70, the sealing film 50 can be more stable, and the folding blood supply port 54 or the main blood flow port 52 can be interfered with or blocked. The blood flow in the main body tube 20 and the daughter tube 30 is smoother, and it is convenient to insert the branch bracket.

In this embodiment, one end of the intermediate support rod 60 is connected to the tangent point of the two developing structures 80, and the other end is connected to the midpoint of the first circular rod 72; the support rods 60 on both sides are respectively connected to The edges of the two developing structures 80 are between the two second arcing bars 74 of the positioning rod 70.

Referring to FIG. 24, FIG. 24 is a schematic structural diagram of a blood vessel shunt frame according to a twentieth embodiment of the present invention. The structure of the blood vessel shunt frame provided by the twentieth embodiment of the present invention is similar to that of the eighteenth embodiment, except that the twentieth embodiment adds two support rods to the eighteenth embodiment. 60, the support film 50 is fixedly spaced with four support rods 60, wherein the two support rods 60 are connected between the edge of one secondary blood flow port 54 and the positioning rod 70, and the other two support rods 60 are connected to another one. The edge of the secondary blood flow port 54 and the positioning rod 70, that is, the two intermediate support rods 60 are connected between the two secondary blood flow ports 54 and the first circular arc bar 72 of the positioning rod 70, Two support rods 60 on both sides are connected between the two secondary blood flow ports 54 and the two second circular arc bars 74 of the positioning rod 70. In this embodiment, the sealing film 50 is supported by the four supporting rods 60 and the positioning rod 70, so that the sealing film 50 can be more stable, and can not interfere or block the secondary blood flow port 54 or the main blood. The flow port 52 makes the blood flow in the main body tube 20 and the daughter tube 30 smoother, and is convenient to be inserted into the main body bracket or the branch bracket; and when the main blood flow port 52 is inserted with the main body bracket, the positioning rod 70 can be attached to the outer surface of the branch bracket to prevent internal leakage.

In the present embodiment, the four support rods 60 are symmetrical with respect to the plane of the central axis of the main body tube 20 along the tangential point passing through the two secondary blood flow ports 54. The two support rods 60 in the middle are in an inverted "V" shape, and each support rod 60 is connected between the middle portion of the first circular rod 72 of the positioning rod 70 and the edge of the corresponding developing structure 80; The two support bars 60 are in an inverted "eight" shape, and each support bar 60 is coupled between the second arcuate bar 74 of the positioning bar 70 and the edge of the corresponding developing structure 80.

Referring to FIG. 25, FIG. 25 is a schematic structural diagram of a blood vessel shunt frame according to a twenty-first embodiment of the present invention. The structure of the blood vessel shunt frame according to the twenty-first embodiment of the present invention is similar to that of the eighteenth embodiment, except that the twenty-first embodiment is the two support rods 60 in the eighteenth embodiment. In place of the two support rods 60a in the thirteenth embodiment, the first rod body 64 of each of the support rods 60a is fixed to the sealing film 50, and the second rod body 65 is fixed to the partitioning film 31 of the corresponding daughter tube 30. The intersection of the first rod 64 and the second rod 65 is located at the intersection of the sealing film 50 and the side wall of the corresponding daughter tube 30. One end of each first rod 64 away from the corresponding second rod 65 is fixed to the positioning rod 70.

In this embodiment, one end of each first rod 64 away from the corresponding second rod 65 is fixed on the corresponding second arc rod 74, and the intersection of the first rod 64 and the second rod 65 is located corresponding to the development. On the edge of the structure 80.

Referring to FIG. 26, FIG. 26 is a schematic structural diagram of a blood vessel shunt frame according to a twenty-second embodiment of the present invention. The structure of the blood vessel shunt frame according to the twenty-second embodiment of the present invention is similar to that of the twenty-first embodiment, except that the sealing film 50 is provided with four support rods 60a, and the four support rods 60a are end to end. Connected to form a "W" shaped support member, the central portion of the "W" shaped support member is folded toward the same side. The first rod 64 of each support rod 60a is fixed on the sealing film 50, and the second rod 65 of the support rod 60a is fixed on the partition film 31 of the corresponding daughter tube 30, the first rod 64 and the second rod 64 The intersection of the rods 65 is located at the intersection of the sealing film 50 and the side walls of the corresponding daughter tubes 30. One end of each first rod 64 away from the corresponding second rod 65 is fixed to the positioning rod 70.

Referring to FIG. 27 to FIG. 29, FIG. 27 is a perspective structural view of a blood vessel stent according to a twenty-third embodiment of the present invention; and FIG. 28 is a state of use of the blood vessel stent according to the twenty-third embodiment of the present invention. FIG. 29 is a schematic view showing another use state of the blood vessel stent according to the twenty-third embodiment of the present invention. The present invention also provides a blood vessel stent comprising a main body bracket 200, a branch bracket 300 and a blood vessel shunt frame 100, the blood vessel shunt frame 100 including a main body tube 22, at least one end of which is provided with a sealing film 50, The sealing membrane 50 is provided with a main blood flow port 52 and at least one blood flow port 54. The sealing film 50 is provided with an annular developing structure 80 at the edge of at least one of the secondary blood flow openings 54 when the branching bracket 300 is branched and connected to the secondary blood flow port 54 of the blood vessel shunt frame 100. The end of the branch bracket 300 is aligned with the developing structure 80 of the edge of the secondary blood flow port 54 on the sealing film 50, and the end of the branch bracket 300 is inserted through the secondary blood flow port 54. Connected to the daughter tube lumen 33 of the daughter tube 30. When one end of the main body bracket 200 is inserted into the main body tube 20 of the blood vessel shunt frame 100 through the main blood flow port 52 on the sealing film 50, the positioning rod 70 is closely attached to the main body The outer surface of the bracket 200 is such that the sealing film 50 is in close contact with the outer surface of the main body bracket 200. In this embodiment, the sealing film 50 at the distal end of the blood vessel shunt frame 100 is provided with two daughter tube lumens 33 and one body tube lumen 25. The main body bracket 25 is inserted into the main body bracket 200. The positioning rod 70 is in close contact with the outer surface of the main body bracket 200, and the branch bracket 300 is inserted into the inner cavity 33 of each sub-body tube.

The main body bracket 200 includes a connection film 201 and a connection support skeleton 202 fixed to the connection film 201. The body stent 200 can be an equal diameter stent type blood vessel or a non-equal diameter stent type blood vessel. As shown in Fig. 30a, the equal-diameter stent-type blood vessel means that the diameters of the main body stent 200 at different positions in the axial direction are the same. As shown in FIG. 30b, the non-equal diameter stent type blood vessel refers to a diameter differently in different positions in the axial direction of the main body bracket 200, and the non-equal diameter stent type blood vessel includes the first tubular body 210 from the proximal end to the distal end in sequence. The second tubular body 220 and the third tubular body 230 are non-equal diameter brackets, and the second tubular body 220 has a smaller diameter than the first tubular body 210 and the third tubular body 230. Transition portions 221, 222 may also be provided between the first tubular body 210, the second tubular body 220, and the third tubular body 230. As shown in Fig. 25c, the proximal support frame 202 of the main body bracket 200 is partially exposed outside the membrane 201 for connection to the delivery device. As shown in FIG. 25d, the main body bracket 200 is a non-equal diameter bracket, and the diameter of the proximal end of the non-equal diameter bracket is larger than the diameter of the distal end, and the diameter is gradually reduced from the proximal end to the distal end, and the whole stent forms a uniform transition. The truncated cone structure accommodates the vascular morphology that changes from proximal to distal diameter.

The connecting film 201 is made of polyester cloth, PTFE, PET or other polymer materials, and the connecting film 201 of the equal-diameter bracket type blood vessel is a straight tube shape, and the connecting film 201 of the non-equal diameter bracket type blood vessel is axially different in diameter. Tubular structure.

The main body bracket 200 may also be a high-low wave stent type blood vessel or a contour wave stent type blood vessel. As shown in Fig. 30c, the high and low wave stent type blood vessels are partially sutured stents. The connection support frame 202 is sutured to the connection film 201 by a suture, and the suture manner is the same as that of the main body tube cover 22 and the main body tube support frame 24 of the blood vessel shunt frame 100, and will not be described herein. The embedded branch surface is a high-wave array surface of the annular wave-shaped support rod, and the embedded branch center line corresponds to the high-wave center line. When the main body bracket 200 is inserted into the blood vessel shunt frame 100, the high wave surface can provide radial support force, and the low wave surface provides better flexibility to facilitate the structure of the aortic arch.

The structure of the branch bracket 300 is the same as that of the main body bracket 200, and details are not described herein again.

In use, the blood vessel shunt frame 100 is first released in the body, and the release position of the blood vessel shunt frame 100 is judged by the imaging device; and the proximal end of the main body bracket 200 is released to the main body of the distal end of the blood vessel shunt frame 100. The main blood flow port 52 of the lumen 25 is inside. Since the developing structure 80 is provided on the edge of the main blood flow port 52, the end portion of the main body holder 200 can be easily inserted into the main blood flow port 52. In addition, since the diameter of the main blood flow port 52 of the main body lumen 25 is smaller than the diameter of the proximal end portion of the main body bracket 200, the positioning rod 70 presses the proximal end portion of the main body bracket 200, so that The tubular body of the main body bracket 200 is in close contact with the sealing film 50 at the distal end of the main body tube 20 to prevent internal leakage. The proximal end of the branch stent 300 is again released into the secondary blood flow port 54 of the daughter tube lumen 33 at the distal end of the blood vessel shunt frame 100. The proximal end of the branch stent 300 is along the inclined surface of the sealing membrane 50. The sub-body lumen 33 is inserted, and the edge of the secondary blood flow port 54 is provided with a developing structure 80, thereby facilitating the insertion of the branch holder 300. Since the diameter of the secondary blood flow port 54 of the daughter body lumen 33 is smaller than the diameter of the proximal end portion of the branch stent 300, the daughter body lumen 33 compresses the proximal end portion of the branch stent 300 such that the branch stent The tubular body of 300 is attached to the wall of the inner lumen 33 of the daughter tube to prevent internal leakage.

In a further embodiment, the vascular stent can be used for the treatment of thoracic aortic aneurysm or thoracic aortic dissection, particularly for the treatment of thoracic aortic aneurysm or thoracic aortic dissection involving the ascending aorta or aortic arch, as shown As shown in Fig. 24, when released, the conveyor is pushed along the super-hard guide wire, and the pre-installed blood vessel shunt frame 100 is pushed to the thoracic aortic dissection lesion position, through the development ring at the front end of the outer sheath tube and the distal end of the blood vessel shunt frame 100. The structure 80 is positioned to release the blood vessel shunt frame 100 by operating the fixed handle and the sliding handle of the conveyor. Then, the main body bracket 200 is released according to the same procedure, so that the proximal end of the main body bracket 200 is inserted into the main body lumen 25 of the blood vessel shunt frame 100. After expansion, the proximal end of the main body bracket 200 is clamped by the positioning rod 70 and the main blood flow port 52. The tight fit prevents the body stent 200 from being disengaged from the blood vessel shunt frame 100. Finally, the branch holder 300 is released in the same manner.

As shown in FIG. 26, a blood flow port 205 may be further formed on the main body bracket 200, and a branch bracket is inserted into the blood flow port 205.

On the other hand, part of the distal end to the proximal end of the main body bracket 200 or the branch bracket 300 is a non-equal annular wave support rod, and the ring bracket has 1-4 unshorizons at the distal end or the proximal end of the stent graft. The peaks and/or troughs on the film are stitched, and the peaks and/or troughs act as bare supports for ease of assembly. The number of each annular stent depends on the axial length of the stent graft.

The above is an embodiment of the present invention, and it should be noted that those skilled in the art can also make some improvements and retouching without departing from the principles of the embodiments of the present invention. It is considered as the scope of protection of the present invention.

Claims (27)

A blood vessel shunt frame for improving development visibility, comprising a main body tube, wherein at least one end of the main body tube is provided with a sealing film, and at least one blood flow port is opened on the sealing film, The sealing film is provided with a developing structure at an edge of at least one of the secondary blood flow ports. The vascular shunt frame for improving development visibility according to claim 1, wherein a distal end and/or a proximal end of the main body tube is provided with the sealing film, and any one of the sealing films is opened. There is at least one blood flow port, and any of the sealing films is provided with the developing structure at an edge of at least one of the secondary blood flow ports. The blood vessel shunt frame for improving development visibility according to claim 1, wherein a main blood flow port is opened on the sealing film, and at least one child tube is disposed in the main body tube. The body tube is butted to at least one of the secondary blood flow ports, and the child body tube is formed by a separation film or by a separation film and a side wall of the main body tube. The blood vessel shunt frame for improving development visibility according to claim 3, wherein the proximal end of the child tube is provided with a developing structure at an edge of the position. A blood vessel shunt frame for improving development visibility according to any one of claims 1 to 4, wherein said developing structure comprises a support member provided at an edge of at least one of said secondary blood flow ports, and along said A developing member provided with a support member. A blood vessel shunt frame for improving development visibility according to claim 5, wherein said developing member is a developing wire wound continuously or intermittently on said support member. A blood vessel shunt frame for improving development visibility according to claim 5, wherein said developing member is at least one turn of a developing material which is embedded or attached to the outer surface of the support member. A blood vessel shunt frame for improving development visibility according to any one of claims 1 to 4, wherein said developing structure comprises a support member provided at an edge of at least one of said secondary blood flow ports, said support member being Made of an alloy containing a developing material. The blood vessel shunt frame for improving development visibility according to any one of claims 1 to 4, wherein the developing structure is a plurality of developing points provided at an edge of at least one of the secondary blood flow ports, and the plurality of developing portions The dots are at least one turn along the edge array of at least one of the secondary blood flow ports. The blood vessel shunt frame for improving development visibility according to claim 9, wherein the development point is fixed to the seal of the edge of the secondary blood flow port by suturing, stamping, hot pressing, setting or affixing. On the membrane. The vascular shunt frame for improving development visibility according to claim 3, wherein an end surface of said secondary blood flow port is lower than an end surface of said main blood flow port, said sealing film is directed to at least one of said secondary blood flow The mouth is recessed such that the sealing film forms a bell mouth with the side wall of the main body tube. The blood vessel shunt frame for improving development visibility according to claim 3, wherein two or more secondary blood flow ports are opened on the sealing film, and two adjacent blood cells are adjacent to each other. The flow port is tangent or spaced, and the sealing film is provided with a developing structure at the edge of each blood flow port. The vascular shunt frame for improving development visibility according to claim 3, wherein at least one support rod is disposed on the sealing film, and at least one of the support rods is connected to the main blood flow port adjacent to at least one An edge of the secondary blood flow port is adjacent to an edge of the secondary blood flow port adjacent to the primary blood flow port. The vascular shunt frame for improving development visibility according to claim 3, wherein the sealing film is provided with two tangential blood flow ports, and the sealing film is provided with at least a support rod, at least one of the support rods being connected between the edge of the main blood flow port adjacent to the secondary blood flow port and the tangent point of the two blood flow ports. The vascular shunt frame for improving development visibility according to claim 3, wherein the sealing film is fixed with two support rods, and the two support rods are respectively connected to the edge of the secondary blood flow port and The main blood flow port is adjacent between edges of the secondary blood flow port. The blood vessel shunt frame for improving development visibility according to claim 3, wherein three sealing rods are fixed on the sealing film, three supporting rods are spaced apart, and a support rod located in the middle is connected to Between the secondary blood flow port and the main blood flow port adjacent to the edge of the secondary blood flow port, two support rods on both sides are respectively connected to the edge of the secondary blood flow port and the main blood flow port Adjacent to the edge of the secondary blood flow port. The blood vessel shunt frame for improving development visibility according to claim 3, wherein the sealing film is provided with a developing structure at an edge of each blood flow port, and the sealing film is fixedly spaced four times. a root support rod, wherein two of the support rods are connected between an edge of the secondary blood flow port and an edge of the primary blood flow port adjacent to the secondary blood flow port, and the other two support rods are connected to the root The edge of the blood flow port is adjacent to the main blood flow port adjacent to the edge of the secondary blood flow port. A blood vessel shunt frame for improving development visibility according to claim 3, wherein said sealing film is provided with at least one support rod, at least one of said support rods comprising a first rod body and obliquely connected thereto a second rod body at one end of the first rod body, the first rod body is fixed on the sealing film, the second rod body is fixed on a side wall of the daughter tube, the first rod body and the first rod body The intersection of the second rods is located at the intersection of the sealing film and the side walls of the corresponding daughter tubes. The blood vessel shunt frame for improving development visibility according to any one of claims 1 to 2, wherein a main blood flow port is opened on the sealing film, and the sealing film is adjacent to the main blood flow. A positioning rod is provided at the edge of one side of the mouth. A blood vessel shunt frame for improving development visibility according to claim 19, wherein said positioning rod extends along an edge of a side of said sealing film adjacent said main blood flow port, said positioning rod being relatively Both ends are respectively connected to the main body tube. A blood vessel shunt frame for improving development visibility according to claim 19, wherein said positioning rod is made of a memory alloy wire. A blood vessel shunt frame for improving development visibility according to claim 19, wherein the positioning rod is provided with a developing structure. A blood vessel shunt frame for improving development visibility according to claim 19, wherein said developing structure is a developing wire wound continuously or intermittently on said positioning rod, or is set or attached to said positioning Developing material on the outer surface of the rod. A blood vessel shunt frame for improving development visibility according to claim 19, wherein said positioning rod is made of a memory alloy containing a developing material. A blood vessel stent comprising a branch stent, characterized in that the blood vessel stent further comprises a blood vessel shunt frame for improving development visibility according to any one of claims 1 to 24, one end of the branch bracket passing through The secondary blood flow port on the sealing membrane is inserted into the daughter tube of the blood vessel shunt frame, and the end of the branching bracket and the edge of the secondary blood flow port on the sealing membrane of the blood vessel shunt frame are developed. The structure is aligned to facilitate insertion of the end of the branch stent through the secondary blood flow port into the blood vessel shunt. The blood vessel stent according to claim 25, wherein said blood vessel stent further comprises a body stent, one end of said body stent being inserted through said main blood flow port on said sealing membrane to said blood vessel manifold Inside the main tube. The blood vessel stent according to claim 26, wherein a branch blood flow port is provided on the body support.

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