WO2019101078A1 - Shunt catheter for improving anchoring, and catheter - Google Patents

Abstract

A shunt catheter (100) for improving anchoring comprises a main body sleeve (20), a sealing cover (50) provided on at least one end thereof, a main blood flow opening (52) set up in the sealing cover (50), and a shaping element arranged at the edge of the main blood flow opening (52). When the main catheter is inserted into the main blood flow opening (52) of the main body sleeve (20), the shaping element can be tightly fixed to the outer surface of the main catheter, so that the sealing cover (50) is tightly fixed to the outer surface of the main catheter in order to prevent inner leakage. Also provided is a catheter arranged in the shunt catheter for improving anchoring.

Description

Improved adherent vascular shunt and vascular stent Technical field

The present invention relates to the field of implantable blood vessels, and more particularly to a blood vessel shunt frame for improving adherence 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 blocks that are formed by a plurality of modules include a plurality of split ports that are connected to the branch stand by a film, and a sealing film is disposed on an end surface of the film holder away from the end of the heart to prevent An internal leak occurs between the plurality of split ports on the end face. However, since the material of the sealing film is soft, the connection between the stent blood vessel inserted into the split port and the sealing film is not sufficiently tight, and endoleak is likely to occur.

Summary of the invention

It is an object of the present invention to provide a blood vessel shunt frame with improved adherence which can prevent endoleak, and a blood vessel stent provided with the blood vessel shunt frame.

In order to solve the above technical problem, the present invention provides an improved adherent blood vessel shunt frame comprising a main body tube, at least one end of which is provided with a sealing film, and the main blood flow is opened on the sealing film The mouth is provided with a shaping member at the edge of the main blood flow port.

The invention also provides a blood vessel stent comprising a main body bracket 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, and the main blood is opened on the sealing film a flow port, the edge of the main blood flow port is provided with a shaping member, and one end of the main body bracket is inserted into the main body tube of the blood vessel shunt frame through a main blood flow port on the sealing film, the stereotype The member positions the main body bracket such that the sealing film closely fits the outer surface of the main body bracket.

The improved adherent blood vessel shunt provided by the present invention is provided with a sizing member at the edge of the main blood flow port of the sealing film of the main body tube to position the sealing film. When the main body bracket is inserted into the main blood flow port of the main body tube, the styling member can be closely attached to the outer surface of the main body bracket, so that the sealing film closely fits the outer surface of the main body bracket To prevent internal leakage.

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.

2 is a schematic perspective view showing a three-dimensional structure in which a daughter tube is disposed on a blood vessel shunt frame according to a first embodiment of the present invention.

3 is a schematic structural view of a sizing member of a blood vessel shunt frame according to a first embodiment of the present invention.

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

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

Fig. 6 is a perspective view showing the structure of a blood vessel shunt frame according to a fourth embodiment of the present invention.

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

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

FIG. 9 is a schematic perspective 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 11a is a schematic view showing the structure of a support member 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.

FIG. 13 is a schematic structural view of a support member 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 schematic view showing the structure of a developing structure of a blood vessel shunt frame according to an eleventh embodiment of the present invention.

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

Figure 17 is a perspective view showing the structure 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 stent according to an eighteenth embodiment of the present invention.

Figure 23 is a schematic view showing one of the states of use of the blood vessel stent according to the eighteenth embodiment of the present invention.

Fig. 24 is a schematic view showing another use state of the blood vessel stent according to the eighteenth embodiment of the present invention.

FIG. 25 is a schematic structural view of one of the main body brackets of the blood vessel stent according to the nineteenth embodiment of the present invention.

Figure 25b is a schematic view showing the structure of another main body bracket of the blood vessel stent according to the nineteenth embodiment of the present invention.

Figure 25c is a schematic view showing the structure of another main body bracket of the blood vessel stent according to the nineteenth embodiment of the present invention.

Figure 25d is a schematic view showing the structure of another main body bracket of the blood vessel stent according to the nineteenth 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.

1-3, FIG. 1 is a perspective view showing a three-dimensional structure of a blood vessel shunt frame according to a first embodiment of the present invention; and FIG. 2 is a three-dimensional structure diagram of a blood vessel shunt frame provided with a child body tube according to the first embodiment of the present invention. FIG. 3 is a schematic structural view of a sizing member of a blood vessel shunt frame according to a first embodiment of the present invention. The present invention provides a blood vessel shunt frame 100, which includes a main body tube 20, at least one end of the main body tube 20 is provided with a sealing film 50, and the sealing film 50 is provided with a main blood flow port 52, the main blood The edge of the flow port 52 is provided with a sizing member.

In this embodiment, the styling member is disposed on the sealing film 50 of the edge of the main blood flow port 52 away from the side wall of the main body tube 20. The sizing member is a positioning rod 70 fixed on the sealing film 50 of the main blood flow opening 52 away from the side wall of the main body tube 20, and the positioning rod 70 is used for positioning the sealing cover The film 50, that is, the direction in which the sealing film 50 is fixed, increases the supporting force of the opening edge of the sealing film. The positioning rod 70 is made of a memory alloy wire, preferably a nickel titanium alloy wire. The sealing film 50 is disposed at a distal end of the main body tube 20, 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 opened on the sealing film 50. Main blood flow port 52. The positioning rod 70 extends along the edge of the side wall of the main blood tube 52 of the sealing film 50 to the side of the main body tube 20, and the opposite ends of the positioning rod 70 are respectively connected to On the side wall of the main body tube 20.

The blood vessel shunt frame 100 provided by the present invention is provided with a sizing member at an edge of the sealing film 50 on the side of the main blood flow port 54 of the main body tube 20 away from the side wall of the main body tube to position the sealing film 50. Therefore, when the main body bracket is inserted into the main blood flow port 52 of the main body tube 20, the styling member 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 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, thereby increasing the compatibility of the main body bracket and the shunt, and making the main body bracket and the shunt joint more stable. .

As shown in FIG. 2, the sealing film 50 is provided with at least one blood flow port 54. The main body tube 20 is provided with at least one daughter tube 30, and at least one of the child tubes 30 is docked to at least one. The blood flow port 54 is described. 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. The sealing film 50 may also be provided with a sizing member at the edge of the at least one blood flow port 54, which is a corresponding annular positioning rod 70 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 fix the branching bracket in the daughter tube 30, that is, the positioning rod 70 can seal the sealing film 50 to the outer surface of the branch bracket to prevent internal leakage. Additionally, the daughter tube 30 can extend the proximal anchoring region of the branching stent to further define the branching stent to increase stability after release of the branching stent. The axial length of the daughter tube 30 can be less than, greater than, or equal to the axial length of the body tube 20. In the case where a plurality of sub-tubes 30 are disposed in the same blood vessel shunt frame 100, the sealing film 50 may be provided with the sizing members at the edges of each of the sub-tubes 30, and the lengths of the sub-tubes 30 may be the same or different.

In other embodiments, the proximal end of the body tube 20 is provided with the sealing film 50, that is, the body tube 20 is provided with a sealing film 50 at an end closer to the heart. The sealing film 50 is provided with at least one of the secondary blood flow ports 54 and the main blood flow port 52, and the proximal end of the child body tube 30 communicates with the secondary blood flow port 54. The positioning surface of the sealing film 50 adjacent to one side of the main blood vessel opening 52 is disposed with the positioning rod 70, and opposite ends of the positioning rod 70 are respectively connected to the proximal end of the main body tube 20; at least one of the above A positioning rod 70 is also provided on the edge of the secondary blood flow port 54.

In other embodiments, the distal end and the proximal end of the main body tube 20 are provided with the sealing film 50, and each sealing film 50 is provided with a main blood flow port 52 and at least one blood flow port 54. At least one of the child tubes 30 is disposed in the main body tube 20, and the two ends of the child tubes 30 respectively abut the secondary blood flow ports 54 on the two sealing films 50, that is, the far side of the child tubes 30 The end communicates with the secondary blood flow port 54 on the sealing membrane 50 of the distal end of the main body tube 20, and the proximal end of the child tube 30 communicates with the secondary blood on the sealing membrane 50 of the proximal end of the main body tube 20. Flow port 54. The distal end of the main body tube 20 and the main blood flow port 52 on the proximal end of the sealing membrane 50 communicate. Each of the sealing films 50 is provided with the positioning rod 70 adjacent to an edge of one side of the corresponding main blood vessel port 52.

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.

As shown in FIG. 3, in the embodiment, the positioning rod 70 is formed by a three-stage circular arc rod, and the positioning rod 70 includes a first circular arc rod 72 located in the middle, and is connected to Two sections of the second arcuate rod 74 at opposite ends of the first arcuate 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 a memory alloy wire.

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.

As shown in FIG. 1 and FIG. 2, 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 faces away from the main blood vessel port 52. The side is curved, that is, the middle of each of the second circular arc bars 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.

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 shape of the lateral end surface of the main body tube 20 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 of the peaks and the respective valleys 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 sinusoidal waveform annular wave support rods 242 which are arranged along the axial interval of the main body film 22. Each sinusoidal waveform of each of the annular wave support rods 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 having a wire diameter (i.e., diameter) ranging from 0.1 mm to 0.6 mm. Each of the annular wave-shaped support rods 242 is provided with a connecting sleeve, and the connecting sleeve connects the opposite ends of the annular wave-shaped support rod 242, that is, the opposite ends of the annular wave-shaped support rod 242 are respectively received in Inside 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 the sine waves is nine, and the vertical height of the annular wave-shaped support rod 242 is 6-15 mm.

In other embodiments, the number of sine waves may be other numbers, and the vertical height of the annular wave support bar 242 may be any height.

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 is 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.

As shown in FIG. 2, the sub-tube inner cavity 33 is independently surrounded by a partitioning film 31, and a cavity between the partitioning film 31 and the main body film 22 is the main body tube inner 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, and the number of the sub-tubes 30 can be set according to actual needs, generally 1-4, preferably 1-3; the sealing film 50 is provided with a sub-portion The body tube 30 corresponds to 1-4 secondary blood flow holes 54, preferably 2-4 secondary blood flow holes 54. 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 sub-tubes 30 is one, the sub-tube 30 is in contact with the inner surface of the main body tube 20, and the distal end of the sub-tube 30 and the secondary blood flow hole 54 Connected. The secondary blood flow hole 54 is adjacent to the midpoint of the main blood flow port 52 adjacent to the edge of the blood flow port 54. 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, and the sealing film 50 is sealingly connected to the main body film 22. The main blood flow port 52 and the secondary blood flow port 54 are both opened. 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, that is, the sealing film 50 is recessed toward the secondary blood flow port 54 to make the sealing film 50 and the main body tube 20 The side wall 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.

In other examples, the sealing film 50 may be a plane parallel to the radial direction of the body tube 20, that is, the sealing film 50 is a plane perpendicular to the central axis of the body tube 20.

The positioning rod 70 can be fixed on the sealing film 50 by stitching or hot pressing. In the embodiment, the positioning rod 70 is fixed on the edge of the sealing film 50 by stitching.

Please refer to FIG. 4. FIG. 4 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 provided with two secondary blood flow ports 54. Two body tubes 30 are disposed in the main body lumen 25 of the main body tube 20, and the distal ends of the two child tubes 30 respectively communicate two of the second 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 distal end faces of the two blood flow ports 54 are lower than the distal end faces of the main blood flow port 52, so that the sealing film 50 forms a bell mouth with the side wall of the main body tube 20.

A wavy support rod 35 is fixed on the partitioning membrane 31 of each of the sub-tubes 30, and the undulating support rod 35 can increase the supporting strength of the sub-tube 30, preventing the inserted branching bracket from being compressed by the main body support, and generating blood flow. Smooth, even the consequences of blockage. The wave support bar 35 can be set according to the shape of the partition 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 wave support bar 35 may be annular or open-loop. The structure, shape and material of the wave support bar 35 are similar to the annular wave support bar 242 on the main body tube 20, and will not be described herein.

In other embodiments, three or more secondary blood flow ports 54 may be opened in the sealing film 50, and three or more of the daughter bodies are disposed in the main body cavity 25 of the main body tube 20. Tube 30, each of said daughter tubes 30 is connected to a 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 other embodiments, the separation film 31 may also be a semi-tubular structure, and the separation film 31 of the semi-tubular structure is sewn on the inner surface of the main body film 22 to form a semicircle together with the main body film 22. Child tube.

In an embodiment thereof, the side of the main body film 22 away from the secondary blood flow port 54 may be cut into a V shape or a U shape, and the main body film 22 is disposed adjacent to the edge of one side of the main body tube cavity 25. There is a V-shaped or U-shaped positioning rod 70. When the main body tube 22 is used with the branch vessel stent or other branch brackets, the visibility of the circumference of the daughter tube 30 can be increased, and the branch vessel stent can be more easily inserted. 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. 5, FIG. 5 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 second embodiment, except that in the third embodiment, the sealing film 50 is parallel to the diameter of the main body tube 20. The plane of the orientation, that is, the sealing film 50 is a plane perpendicular to the central axis of the body tube 20.

Please refer to FIG. 6. FIG. 6 is a schematic perspective structural view 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 first embodiment, except that in the fourth embodiment, the sealing film 50 is provided with at least one support rod 60. One end of the support rod 60 is coupled to the positioning rod 70, and the other end of the support rod 60 is connected to the edge of the secondary blood flow port 54 adjacent to the main blood vessel port 52. The support rod 60 and the positioning rod 70 can support the sealing film 50 to fully spread the sealing film 50 and extend the sealing film 50 away from the main blood flow port 52 to Preventing the sealing film 50 from being folded and moving toward the main blood flow port 52 or the secondary blood flow port 54 to block the main blood flow port 52 or the secondary blood flow port 54; when the main blood vessel port 52 is inserted and connected with the main body bracket The positioning rod 70 can be closely attached to the outer surface of the main body bracket such that the sealing film 50 abuts against the outer surface of the main body bracket to prevent blood leakage in the main body tube 20.

The support rod 60 includes a rod body 61 and two sewing rings 63 disposed at two ends of the rod body 61. One sewing ring 63 is connected to the positioning rod 70, and the other sewing ring 63 is connected to the second blood. The edge of the flow port 54. The material of the support rod 60 is nickel titanium wire with a wire diameter of 0.10-0.40 mm, preferably, a wire diameter of 0.20-0.30 mm.

In this embodiment, one of the sewing rings 63 of the support rod 60 is fixed to the first circular rod 72 of the positioning rod 70, and another sewing ring 63 of the support rod 60 is fixed to the secondary blood flow. The mouth 54 is adjacent to the edge of the positioning rod 70. Preferably, one of the sewing rings 63 of the stay 60 is fixed to the midpoint of the first circular rod 72.

The support rod 60 is fixed on the sealing film 50 of the blood vessel shunt frame 100 of the present invention between the positioning rod 70 and the edge of the secondary blood flow port 54, and the support rod 60 can fix the sealing film 50. The direction is such 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 film 50 can be completely flattened without folding. It does not interfere with the secondary blood flow port 54 or the main blood flow port 52, and can prevent the sealing film 50 from blocking the secondary blood flow port 54 or the main blood flow port 52; the support rod 60 can also be inserted into the blood vessel shunt frame 100. The branch vessel stent on the secondary blood flow port 54 provides a guiding effect, that is, the traction guide wire of the branch vessel stent can slide into the secondary blood flow port 54 along the smooth sealing membrane 50, facilitating the insertion of the branch vessel The bracket improves work efficiency.

Referring to FIG. 7, FIG. 7 is a schematic perspective structural view 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 two tangent secondary blood. The flow port 54 is provided with two daughter tubes 30 in the main body lumen 25 of the main body tube 20, and the distal ends of the two child 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 positioning rod 70 and the tangent point of the two blood flow ports 54. The sealing film 50 is recessed toward the two of the secondary blood flow openings 54, that is, the sealing film 50 is inclined toward the two of the secondary blood flow openings 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 secondary blood flow port 54.

Please refer to FIG. 8. FIG. 8 is a schematic perspective structural view 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 fifth embodiment, except that in the sixth embodiment, the sealing film 50 is provided with two of the secondary blood flows. a plurality of the support rods 60 are fixedly spaced apart from the sealing film 50, and the two support rods 60 are respectively connected to the edges of the two blood flow ports 54 and the positioning rod 70. between. Specifically, one end of each support rod 60 is fixed to the second arc rod 74 of the positioning rod 70, and the other end is fixed to the edge of the corresponding secondary blood flow port 54.

In this embodiment, the two support rods 60 have an inverted "eight" shape.

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. 9, FIG. 9 is a schematic perspective structural view 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 the seventh embodiment adds a support rod 60 to the sixth embodiment, that is, Three support rods 60 are fixed on the sealing film 50. The three support rods 60 are spaced apart. One of the support rods 60 in the middle is connected to the tangent point of the two secondary blood flow ports 54 and the first circle of the positioning rod 70. 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 vessel stent.

In this embodiment, one end of the intermediate support rod 60 connects the tangent points of the two blood flow ports 54, and the other end is connected to the midpoint of the first round rod 72; two support rods on both sides The 60 is symmetrically disposed, i.e., the two support rods 60 on both sides are symmetrical with respect to the plane of the central axis of the body tube 20 along the tangent point through the two secondary blood flow ports 54.

Please refer to FIG. 10. FIG. 10 is a schematic perspective structural view 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 sixth embodiment, except that two support rods 60 are added on the basis of the sixth embodiment, that is, on the sealing film 50. Four support rods 60 are fixed at intervals, wherein 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 the edge of the other secondary blood flow port 54. Between the positioning rod 70, that is, the middle two supporting rods 60 are connected between the two secondary blood flow ports 54 and the first circular rod 72 of the positioning rod 70, and two support rods on both sides 60 is coupled between the two of the secondary blood flow ports 54 and the two of the 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 for inserting the main body bracket or the branch blood vessel support; and when the main blood flow port 52 is inserted with the main body support, the positioning The rod 70 can be attached to the outer surface of the branch vessel stent 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 have 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 secondary blood flow port 54; The two support rods 60 on the side are in an inverted "eight" shape, and each of the support rods 60 is connected between the second arcuate rod 74 of the positioning rod 70 and the edge of the corresponding secondary blood flow port 54.

In other embodiments, four or more support rods 60, such as five, six, etc., may be fixed to the sealing film 50, and a part of the support rods 60 are connected to one of the secondary blood flow ports 54. Between the edge and the positioning rod 70, another portion of the support rod 60 is coupled between the edge of the other of the secondary blood flow openings 54 and the positioning rod 70.

In other embodiments, the sealing film 50 may be 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 of which is fixed. The support rod 60 is coupled between the edge of the corresponding secondary blood flow port 54 and the positioning rod 70.

In other embodiments, the four support rods 60 may also be disposed on the sealing film 50 in parallel at intervals.

Please refer to FIG. 11. FIG. 11 is a schematic perspective structural view 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 sixth embodiment, except that the structure of the support rod 60a in the ninth embodiment and the support rod 60 in the sixth embodiment are different. The structure of the supporting rod 60a includes a first rod 64 and a second rod 65 obliquely connected to one end of the first rod 64, the first rod 64 and the second The angle a between the rods 65 ranges from 24 to 130 degrees. The first rod 64 of each support rod 60a is fixed on the sealing film 50, and the second rod 65 is fixed on the side wall of the corresponding sub-tube 30, that is, the second rod 65 is fixed to the corresponding sub-tube On the partition film 31 of 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. The first rod body 64 and the sealing film 50 have the same inclination angle, and the second rod body 65 extends in the axial direction of the corresponding partition film 31. One end of each first rod 64 away from the corresponding second rod 65 is fixed to the positioning rod 70. Preferably, one end of each first rod 64 away from the corresponding second rod 65 is fixed to the corresponding second arc rod 74.

In this embodiment, the first rod body 64 and the second rod body 65 are integrated, and the angle between the first rod body 64 and the second rod body 65 is shaped by hot pressing and bending. The first rod body 64 and the second rod body 65 are fixed to the sealing film 50 and the partitioning film 31 by sewing, respectively.

The first rod 64 of the support rod 60a in this embodiment is fixed on the sealing film 50, and the end of the first rod 64 away from the second rod 65 is fixed on the positioning rod 70, the support The rod 60a and the positioning rod 70 have a supporting effect on the sealing film 50; the second rod 65 is fixed on the separating film 31, can not only support the sealing film 50, but also can position the corresponding separating film 31, and can be enhanced The radial supporting force of the daughter tube 30 encloses the sealing film 50 and the side wall of the main body tube 20 into a stable bell mouth structure, so that the blood flow in the main body tube 20 and the daughter tube 30 is smoother and more convenient. The branch vessel stent is connected to the main blood flow port 52 and the secondary blood flow port 54.

In other embodiments, the first rod body 64 and the second rod body 65 may also be a split design, and the connection point of the first rod body 64 and the second rod body 65 may be combined by welding, or the first The rod body 64 is in contact with the second rod body 65 and then fixed to the sealing film 50 and the partitioning film 31, respectively.

In other embodiments, the sealing film 50 may also be provided with only one support rod 60a. The first rod body 64 of the support rod 60a is fixed on the sealing film 50, and the end of the first rod body 64 away from the second rod body 65 is fixed on the positioning rod 70, and the second rod body 65 is fixed. At the tangency of the two daughter tubes 30.

In other embodiments, the sealing film 50 may also be provided with only one support rod 60a. Only one of the secondary blood flow ports 54 is opened on the sealing film 50, and the first rod 64 of the support rod 60a is provided. Fixed on the sealing film 50, the second rod 65 is fixed on the separation film 31 of the secondary blood flow port 54, and the intersection of the first rod 64 and the second rod 65 is located in the sealing film At the intersection of the partitioning film 31 and the partitioning film 31, one end of the first rod 64 away from the second rod 65 is connected to the positioning rod 70.

12 and FIG. 13, FIG. 11 is a schematic perspective view of a blood vessel shunt frame according to a tenth embodiment of the present invention; and FIG. 12 is a schematic structural view of a support member of the blood vessel shunt frame according to the 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 sealing film 50 is provided with four support rods 60a and four supports. The rods 60a are joined end to end to form a "W" shaped support member, the central portion of which 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 corresponding separation film 31. One end of each first rod 64 away from the corresponding second rod 65 is fixed to the positioning rod 70.

In this embodiment, the four support rods 60a are integrally symmetrical, and the connection point between the first rods 64 of the two middle support rods 60a is connected to the middle of the first circular rod 72 of the positioning rod 70. The two second rods 65 are respectively fixed to the partitioning membranes 31 of the two sub-tubes 30, so that the two intermediate support rods 60a enclose an inverted "V"-shaped structure. The first rods 64 of the two support rods 60a on the two sides are respectively connected between the edge of the corresponding secondary blood flow opening 54 and the two second circular arc rods 74 of the positioning rod 70, and the two second rod bodies 65 The bottom ends are respectively connected to the bottom ends of the second rods 65 of the two intermediate support rods 60a and are fixed to the separation film 31 of the corresponding daughter tube 30, that is, on the separation film 31 of each of the daughter tubes 30. The two second rods 65 enclose 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, and are connected to the positioning rods 70, which have better supporting effect on the sealing film 50; four supports The second rod 65 of the rod 60a encloses two "V"-shaped support structures and is respectively fixed to the partitioning film 31 of the two sub-tubes 30, thereby further enhancing the radial supporting force of the sub-tube 30, so that the sealing is covered. The membrane 50 and the side wall of the main body tube 20 enclose 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 vessel stent is conveniently inserted.

Referring to FIG. 14 and FIG. 15, FIG. 14 is a schematic perspective structural view of a blood vessel shunt frame according to an eleventh embodiment of the present invention; and FIG. 15 is a structure of a developing structure of the blood vessel shunt frame according to the eleventh embodiment of the present invention. schematic diagram. The structure of the blood vessel shunt frame according to the eleventh embodiment of the present invention is similar to that of the first embodiment, except that in the eleventh embodiment, the child body tube 30 is at the secondary blood flow port 54. The edge is provided with a developing structure 80 including 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 the secondary blood flow port 54, and the developing member 84 is a developing wire wound continuously or intermittently on the metal ring or the metal rod. Or the support member 82 of the developing structure 80 is made of an alloy doped with a developing material, for example, the nickel-titanium alloy wire is made of a niobium-containing nickel-titanium alloy wire, and the diameter of the nitinol wire 84 is 0.10-0.40mm. Or the developing structure 80 is a developing ring.

In this embodiment, the support member 82 is made of a metal ring made of a memory alloy, such as a nickel-titanium alloy ring structure, the metal ring is adapted to the edge shape of the secondary blood flow port 54, and the developing member 84 is continuous. Or a developing wire wound intermittently on the metal ring. Since the annular developing structure 80 has developability and a ring structure, the position of the annular developing structure 80 can be clearly observed by the image forming apparatus during the surgery, that is, it can be observed that the annular developing structure 80 is the The edge of the secondary blood flow port 54 is surrounded by a discrete development point, so that it is more convenient and quick to insert the branch blood vessel stent into the secondary blood flow port 54. The developer material includes, but is not limited to, gold, platinum, platinum-tungsten, palladium, platinum-iridium, ruthenium, osmium, or alloys or composites of these metals.

In other embodiments, the outer surface of the support member 82 may be embedded or attached with at least one week of developing material, such as a developing wire on the support member 82, or outside the support member 82. The developing wire 84 is pasted on the surface for at least one week. Preferably, the support member is wound with a twisted wire.

In other embodiments, the annular development structure 80 is a development point that is continuously or intermittently attached to the edge of the secondary blood flow port 54 on the sealing film 50 by stitching, stamping, hot pressing, setting or The manner of attachment is fixed to the support member 82 or to the sealing film 50 where the support member 82 is placed.

In other embodiments, the edge of the main blood flow port 52 is also provided with an annular 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, the positioning rod 70 can be made of a memory alloy wire containing a developing material to facilitate insertion of a branch vessel stent within the main blood flow port 52.

In other embodiments, the positioning rod 70 is continuously or intermittently wound with a developing wire.

In other embodiments, the positioning rod 70 is provided with or affixed with a developing structure. For example, a developing wire is placed on the positioning rod 70.

In other embodiments, the distal or proximal end of the body tube 20 can also be provided with an annular development structure 80 at the edge of the main blood flow port 52.

In other embodiments, at least one week of a developing wire such as ruthenium, platinum or palladium wire may be embedded or attached to the outer surface of the support member 82. Preferably, the support member 82 is wound with a twisted wire.

In other embodiments, the proximal end of each daughter tube 30 is also provided with an annular development structure 80 at the edge of the secondary blood flow port 54.

In other embodiments, the distal end of the body tube 20 can also be provided with an annular 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.

In other embodiments, the developing member 84 is a developing material fused within the support member 82, that is, the developing member 84 is a developing material fused in a metal ring or a metal rod. The support member 82 is surrounded by a niobium-containing nickel-titanium alloy wire having a wire diameter of 0.10-0.40 mm and an outer diameter of the support member 82 of 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 provided 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 vessel stent can be inserted into the secondary blood flow port 54 conveniently and quickly, which is convenient to use.

In other embodiments, the proximal end of the nozzle tube 30 is provided with an annular development structure 80, the design of the annular development structure 80 and the annular development structure 80 at the edge of the secondary blood flow port 54. The design is the same. 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 approach path of the branch vessel guiding guide wire saves operation time and reduces the risk of surgery.

In other embodiments, the annular development structure 80 may also be disposed on the separation film 31 of the daughter tube 30, and preferably may be disposed on the separation film 31 from the proximal end to the distal end in the axial direction or A plurality of intermittent 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 rows 1-4 in a circumferential interval. 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.

Referring to FIG. 16, FIG. 16 is a schematic perspective structural view 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 fourth embodiment, except that in the twelfth embodiment, the distal end of the daughter tube 30 is in the second blood. The annular development structure 80 is disposed around the flow port 54; further, the annular development structure 80 is also disposed at the edge of the proximal nozzle opening of the daughter tube nozzle 30.

Referring to FIG. 17, FIG. 17 is a schematic perspective structural view 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 sixth embodiment, except that in the thirteenth embodiment, the distal end of each of the daughter tubes 30 is in the second blood. The annular development structure 80 is disposed around the flow port 54; further, the annular development structure 80 is also disposed at the edge of the proximal nozzle opening of the daughter tube nozzle 30.

Referring to FIG. 18, FIG. 18 is a schematic perspective structural view 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 seventh embodiment, except that in the fourteenth embodiment, the distal end of each of the daughter tubes 30 is in the second blood. The annular development structure 80 is disposed around the flow port 54; further, the annular development structure 80 is also disposed at the edge of the proximal nozzle opening of the daughter tube nozzle 30.

Referring to FIG. 19, FIG. 19 is a schematic perspective structural view 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 eighth embodiment, except that in the fifteenth embodiment, the distal end of each of the daughter tubes 30 is in the second blood. The annular development structure 80 is disposed around the flow port 54; further, the annular development structure 80 is also disposed at the edge of the proximal nozzle opening of the daughter tube nozzle 30.

Referring to FIG. 20, FIG. 20 is a schematic perspective structural view 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 ninth embodiment, except that in the sixteenth embodiment, the distal end of each of the daughter tubes 30 is in the second blood. The annular development structure 80 is disposed around the flow port 54; further, the annular development structure 80 is also disposed at the edge of the proximal nozzle opening of the daughter tube nozzle 30.

Referring to FIG. 21, FIG. 21 is a schematic perspective structural view 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 tenth embodiment, except that in the seventeenth embodiment, the distal end of each of the daughter tubes 30 is in the second blood. The annular development structure 80 is disposed around the flow port 54; further, the annular development structure 80 is also disposed at the edge of the proximal nozzle opening of the daughter tube nozzle 30.

Referring to FIG. 22 and FIG. 24, FIG. 22 is a schematic perspective view of a blood vessel stent according to an eighteenth embodiment of the present invention; and FIG. 23 is a schematic view showing one of the use states of the blood vessel stent according to the eighteenth embodiment of the present invention; Fig. 24 is a schematic view showing another use state of the blood vessel stent according to the eighteenth embodiment of the present invention. The present invention also provides a blood vessel stent comprising a main body bracket 200 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 cover A main blood flow port 52 is defined in the membrane 50, and a sealing member 70 is disposed adjacent to an edge of one side of the main blood flow port 52, and one end of the main body bracket 200 passes through the sealing film The main blood flow port 52 of the 50 is inserted into the main body tube 20 of the blood vessel shunt frame 100, and the positioning rod 70 is in close contact with the outer surface of the main body bracket 200, so that the sealing film 50 and the The outer surface of the main body bracket 200 is in close contact.

Further, the blood vessel stent further includes a branching bracket 300, and one end of the branching bracket 300 is inserted into the child tube lumen 33 of the daughter tube 30 through the secondary blood flow port 54 on the sealing film 50. Inside.

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. 25a, 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. 25b, the non-equal diameter stent type blood vessel refers to different diameters of 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 in order from the proximal end to the distal end. 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. 25c, 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 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 main body bracket The tubular body of 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 vessel stent 300 being inclined along the sealing membrane 50 The face is inserted into the inner lumen 33 of the daughter tube to facilitate insertion of the branch vessel stent 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 blood vessel stent 300, the daughter body lumen 33 compresses the proximal end portion of the branch stent 300 so that the branch The tubular body of the stent 300 is attached to the wall of the daughter lumen 33 to prevent internal leakage. Since the developing structure 80 is disposed at the main blood flow port 52 of the main body tube lumen 25 of the blood vessel shunt frame 100 and the secondary blood flow port 54 of the daughter tube inner cavity 33, the main body bracket 200 and the branch blood vessel bracket can be conveniently inserted. 300.

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 conveyor handle. 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. 24, a blood flow port 205 may be further formed on the main body bracket 200, and a branch vessel stent 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 (25)

A blood vessel shunt frame for improving adherence, comprising a main body tube, wherein at least one end of the main body tube is provided with a sealing film, and a main blood flow port is opened on the sealing film, the main blood The edge of the nozzle is provided with a shaped piece. The blood vessel shunt frame according to claim 1, wherein said styling member is disposed on a sealing film of an edge of the main blood flow opening away from a side wall of said main body tube. A blood vessel shunt frame according to claim 1, wherein said styling member is a positioning rod fixed to said edge of said main blood flow opening away from a side of said side wall of said main body tube Seal the film. The blood vessel shunt frame according to claim 3, wherein the positioning rod extends along the edge of the main blood flow port on the sealing film to the side of the side wall of the main body tube toward the center of the main body tube. The opposite ends of the positioning rod are respectively connected to the side wall of the main body tube. The blood vessel shunt frame according to claim 3, wherein the positioning rod is a linear rod, a wave rod or a curved rod. The blood vessel shunt frame according to claim 3, wherein the positioning rod is connected by three arcs, the positioning rod includes a first arc rod in the middle, and is connected to the first Two second circular arc rods at opposite ends of the circular arc rod, and the two second circular arc rods are symmetric along a midpoint of the first circular arc rod. The blood vessel shunt frame according to claim 6, wherein a middle portion of the first circular arc rod is curved toward the main blood vessel port, and a middle portion of each of the second circular arc rods faces away from the main blood vessel port One side is curved. The blood vessel shunt frame according to claim 3, wherein the positioning rod is made of a memory alloy wire. The blood vessel shunt frame according to any one of claims 1 to 8, wherein at least one blood flow port is further disposed on the sealing film, and at least one child tube is disposed in the main body tube. The daughter tube is docked to at least one of the secondary blood flow ports. The blood vessel shunt frame according to claim 9, wherein at least one support member is disposed on the sealing film, and at least one of the support members is coupled to the shaping member and at least one of the secondary blood flow ports. Between the edges. The blood vessel shunt frame according to claim 10, wherein at least one of said support members is a support rod fixed to said sealing film, said support rod being connected at one end to said sizing member, said support rod The other end is coupled to at least one of said secondary blood streams adjacent an edge of said styling member. The blood vessel shunt frame according to claim 11, wherein said sealing film is provided with two tangential secondary blood flow ports, at least one of said support rods being connected to said shaping member and said two Between the tangent points of the secondary blood flow. The blood vessel shunt frame according to claim 11, wherein two sealing rods are fixedly spaced apart from the sealing film, and the two supporting rods are respectively connected to the edge of the secondary blood flow port and the Between the shaped parts. The blood vessel shunt frame according to claim 11, wherein three sealing rods are fixedly spaced apart from the sealing film, and a supporting rod located in the middle is connected to the secondary blood flow port and the shaping member. Between the middle portions, two support rods on both sides are respectively connected between the edge of the secondary blood flow port and the opposite end portions of the shaping member. The blood vessel shunt frame according to claim 11, wherein four sealing rods are fixedly spaced apart from the sealing film, and two middle supporting rods are connected to the secondary blood flow port and the shaping member. Between the middle portions, two support rods on both sides are connected between the opposite ends of the blood flow port and the sizing member. The blood vessel shunt frame according to claim 11, wherein the at least one support rod comprises a first rod body and a second rod body obliquely connected to one end of the first rod body, the first rod body being fixed to the sealing film Upper second body is fixed on the sidewall of at least one of the daughter tubes, and the intersection of the first rod and the second rod is located at the intersection of the sealing film and the side wall of the daughter tube The one end of the first rod body away from the second rod body is connected to the shaping member. The blood vessel shunt frame according to claim 10, wherein at least one end surface of the distal end of the secondary blood flow port is lower than a distal end surface of the main blood flow port, and the sealing film is directed to at least one of the secondary blood flows 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 according to claim 9, wherein at least one of the blood flow port and/or the edge of the main blood flow port is provided with a developing structure. The vascular shunt frame according to claim 18, wherein said developing structure is a developing point that is continuously or intermittently fixed to the edge of the blood flow port or the main blood flow port. The blood vessel shunt according to claim 19, wherein said developing structure comprises a support member and a developing member, said support member being a metal ring or a metal rod adapted to the shape of the edge of the main blood flow port or the secondary blood flow port. A blood vessel shunt according to claim 21, wherein said developing member is a developing wire wound continuously or intermittently on said metal ring or metal rod; or is embedded or attached to said metal ring or metal a development point on the periphery or surface of the rod; or a developing material fused in the metal ring or metal rod. The blood vessel shunt according to claim 18, wherein said developing structure is disposed on the sizing member. A blood vessel stent comprising a body stent, wherein the blood vessel stent further comprises a blood vessel shunt frame according to any one of claims 1 to 22, wherein one end of the body stent passes through the sealing film The main blood flow port is inserted into the main body tube of the blood vessel shunt frame, and the shaping member positions the main body bracket such that the sealing film closely fits the outer surface of the main body bracket. The blood vessel stent according to claim 23, wherein a branch blood flow port is provided on the body support. The blood vessel stent according to claim 23, wherein the blood vessel stent further comprises a branching stent, one end of the branching stent being inserted through the secondary blood flow port on the sealing membrane to the blood vessel manifold Inside the child tube.

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