WO2016101529A1 - Valve-clamping device for artificial mitral valve - Google Patents

Abstract

A valve-clamping device for artificial mitral valve, comprising a handle portion (1), a core rod (2), a ratchet wheel(3) and a valve-clamping portion (4); the valve-clamping portion (4) has a barrel-shaped cavity (41) with an opening at an upper portion and a through hole at a bottom portion, a ratchet wheel groove (42) and a sliding groove (43) being disposed on an inner wall of the barrel-shaped cavity (41) to connect the core rod (2) and the ratchet wheel(3), three line clamping portions (46) being circumferentially disposed along the barrel-shaped cavity (41) on an outer side of the valve-clamping portion (4), the tightening line enabling a valve corner and the valve-clamping device to be fixedly connected via the line clamping portions (46); when the handle portion (1) is rotated, an engagement between the handle portion (1), the core rod (2) and the ratchet wheel(3) enables the core rod (2) to be uni-directionally rotated to tighten the tightening line so as to tighten the valve corner. The valve-clamping device for the artificial mitral valve can radially fix the valve corner of the artificial mitral valve, thus avoiding an injury caused by extra distortion of the valve corner when being closed; furthermore, the valve-clamping device for artificial mitral valve is of a split-type, thereby considerably reducing manufacturing cost and operation cost.

Description

Artificial mitral valve valve holder Technical field

The invention relates to an artificial mitral valve valve holder, belonging to the technical field of medical instruments.

Background technique

Heart valve disease is currently one of the major types of heart disease, and valvular disease can cause major cardiac dysfunction and ultimately requires replacement of the native heart valve with a prosthetic heart valve. The heart valve is mainly divided into aortic valve, pulmonary valve, tricuspid valve and mitral valve. The mitral valve is also called the sacral flap, which is like a “one-way valve” between the left atrium and the left ventricle, ensuring blood circulation from the left atrium to the left ventricle and a certain blood flow. For most patients who need to replace the heart valve, the artificial heart valve is mostly surgically implanted into the body.

The artificial mitral valve is made of biological tissue, metal frame, silica gel, polyester thread and polyester fabric. It is stored and transported in antiseptic solution after production. During this time, the function of the mitral valve valve is to firmly fix the mitral valve in the preservation bottle containing the antiseptic solution, and the valve holder is required to be fixed in the preservation bottle and the valve hanger in the preservation bottle. Connected, the mitral valve is not separated from the antiseptic solution, and does not collide with other utensils, resulting in product safety problems. And during the operation, the surgeon will suture the valve and the human tissue by grasping the valve with the aid of the valve holder.

In the clinical implantation of the mitral valve, in order to prevent the valve flap angle and tissue interference and affect the surgical effect and / or the surgical process, the three valve angles of the valve should be retracted before implantation, which is also the valve flap One of the functions of the device. Currently, the clinically used holders are generally designed to have a structure capable of axially pushing and tightening the line to retract the flap angle, or to fix the non-retracted flap angle, which is too large for the deformation of the flap angle, and The way of axial tightening requires the mold to be integrally formed, so that the cost of producing the mold is greatly increased. At the same time, the mitral valve of different sizes needs to be replaced by the corresponding size of the valve holder, and the operation cost is too high.

Summary of the invention

In view of the above-mentioned drawbacks in the prior art, the present invention provides an artificial mitral valve valve holder which can achieve radial fixation of the flap angle of the artificial mitral valve, thereby avoiding the flap when the flap angle is retracted The damage caused by the excessive deformation of the horn; in addition, the artificial mitral valve holder is a split type, which greatly reduces the production cost and the use cost.

The invention provides an artificial mitral valve valve holder, comprising: a handle portion, a core rod, a ratchet wheel and a flap portion; wherein

The holding portion has a barrel-shaped cavity with an upper opening and a through hole at the bottom, the inner wall of the barrel-shaped cavity is provided with a ratchet groove and a sliding groove, and the outer side of the holding valve portion is provided with three valves in the circumferential direction of the barrel-shaped cavity a support portion, a lower outer edge of each of the valve support portions forms a support surface for supporting the artificial mitral valve, and the three support surfaces are circumferentially encircled along the circumferential direction of the retaining flap and are supported by the radial dimension The inner diameter of the suture edge of the artificial mitral valve is the same, and the upper part of the support surface is provided with a wire holding portion, and the wire holding portion can pass the tightening wire from the inner side of the wire holding portion to the lower side of the wire holding portion;

The top end of the core rod has a positioning plate, the lower end surface of the positioning plate is provided with a positioning core rod, and the upper portion of the positioning core rod forms a clamping portion with an increased outer diameter, and the lower edge of the clamping portion forms a hook structure, and the ratchet can be sleeved on the The latching portion enables the combination of the ratchet and the retaining portion to be received in the upper opening of the barrel-shaped cavity of the retaining flap, and the lower portion of the positioning stem can pass from the bottom of the barrel-shaped cavity The hole protrudes, and the ratchet and the hook structure respectively cooperate with the ratchet groove and the chute of the inner wall of the barrel cavity to realize one-way rotation;

The handle portion is detachably disposed on a positioning plate of the core rod, and the handle portion is capable of driving the core rod to rotate.

In an embodiment, the handle portion includes a handle base and a detachable handle. The handle seat is provided with a first threading hole, and the positioning plate of the core rod is provided with a second threading hole corresponding to the first threading hole. .

Further, the first threading hole and the second threading hole are both two, and a first tangential groove is disposed between the first threading holes.

In an embodiment, a fixing hole is formed on a positioning plate portion of the core rod, and a fixing rod capable of engaging with the fixing hole is disposed at a lower portion of the handle seat, and the card is realized by a card slot structure between the fixing rod and the fixing hole. Fixed.

In one embodiment, the retaining portion of the upper outer diameter of the positioning mandrel is a cage structure having three center pillars whose upper ends are fixed to the lower end surface of the positioning plate, and the center is standing The lower ends of the columns are respectively connected to the outer ends of a beam, the inner ends of the beams meet at the positioning core rod, the lower end edges of the center columns form the hook structure, and the three beams are respectively provided with a line for threading the tightening line Through hole.

Further, the lower portion of the positioning core rod is a columnar body, one end of which is connected to the intersection of the beam and the other end of which protrudes from the through hole at the bottom of the barrel cavity.

Further, at least one elastic tooth tangential to the outer circumference of the ratchet is disposed on the outer circumference of the ratchet.

In an embodiment, the wire holding portion is a two-stage stepped structure, and the first step is fixed on a lower outer circumference of the barrel-shaped cavity of the lobed portion, and the supporting surface for forming a support for the artificial mitral valve Located below the inner side of the second step, three spaced-aperture threading holes are circumferentially opened on the second step, and a step of extending the tightening wire from the positioning core is provided on the first step Pass through the threaded passage to the threading hole.

Further, a second tangential groove is formed between the two threading holes of the three spaced-aperture threading holes.

Further, a pair of two axially distributed protrusions are respectively disposed in the corresponding regions of the outer circumference of the barrel-shaped cavity of the lobed portion, and the pair of protrusions are disposed to fix the valve pylon to the pair of protrusions Between.

The artificial mitral valve valve holder provided by the invention realizes one-way rotation in the barrel-shaped cavity of the flap portion by matching the handle portion, the core rod and the ratchet wheel, and further passes the thread holding portion while the handle portion rotates. The tightening wire that is passed from the inner side to the lower side thereof is tightened, thereby achieving radial fixation of the flap angle of the artificial mitral valve; in addition, the artificial mitral valve retaining device is a split structure, not only The mold structure is greatly simplified and the mold manufacturing cost is reduced, and the corresponding flap members are only required to be replaced for different sizes of the mitral valve, thereby reducing the cost of use.

DRAWINGS

1 is a schematic view showing the structure of a manual mitral valve valve holder in a separated state according to the present invention;

2 is a schematic structural view of a flap portion of a prosthetic valvular valve holder according to the present invention;

3 is a schematic structural view of a handle seat and a core rod of the artificial mitral valve valve holder of the present invention;

Figure 4 is a bottom plan view of the mandrel of the artificial mitral valve valve holder of the present invention;

FIG. 5 is a schematic view showing the artificial mitral valve valve holder and the artificial mitral valve connected and fixed according to the present invention.

Reference mark:

1: handle part 2: core rod

3: Ratchet 4: Holding the flap

12: Handle seat 13: Handle

14: Fixed rod 15: Fixed rib

123: first tangential groove 121a, 121b: first threading hole

21: positioning plate 22: positioning mandrel

23: Holder 24: Hook structure

212: fixing holes 214a, 214b: second threading holes

213: fixing groove 25: columnar body

231: Center column 232: Beam

233: Line through hole 41: barrel cavity

42: ratchet slot 43: chute

45: support surface 46: line support

47: Overpass channel 461a, 461b, 461c: Threading hole

462: second tangential groove a: tightening line

b: flap angle c: artificial mitral valve

detailed description

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. Some embodiments, rather than all of the embodiments, are invented. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

1 is a schematic view showing the structure of the artificial mitral valve valve holder in a separated state according to the present invention. 2 is a schematic view showing the structure of a flap portion of an artificial mitral valve holder according to the present invention. 3 is a schematic view showing the structure of a handle seat and a core rod of the artificial mitral valve valve holder of the present invention. Figure 4 is the hair A bottom view of the mandrel of the artificial mitral valve holder. FIG. 5 is a schematic view showing the artificial mitral valve valve holder and the artificial mitral valve connected and fixed according to the present invention.

Referring to FIG. 1 to FIG. 5 simultaneously, the artificial mitral valve valve holder of the present invention comprises: a handle portion 1, a core rod 2, a ratchet 3 and a holding portion 4.

The holding portion 4 has a barrel-shaped cavity 41 having an upper opening and a through hole at the bottom thereof. The inner wall of the barrel-shaped cavity is provided with a ratchet groove 42 and a sliding groove 43. The outside of the holding valve portion 4 is circumferentially along the barrel-shaped cavity 41. Three valve support portions 44 are provided, and a lower outer edge of each of the valve support portions 44 forms a support surface 45 for supporting the artificial mitral valve, and three support surfaces 45 are circumferentially formed along the valve portion 4 The radial dimension of the ring coincides with the inner diameter of the suture edge of the supported artificial mitral valve, and the upper portion of the support surface 45 is provided with a wire holding portion 46, which can pass the tightening wire from the inner side of the wire holding portion. To the bottom of the line.

The top end of the core rod 2 has a positioning plate 21, and the lower end surface of the positioning plate 21 is provided with a positioning core rod 22. The upper portion of the positioning core rod 22 forms a holding portion 23 with an increased outer diameter, and the lower edge of the holding portion 23 forms a hook structure 24, The ratchet wheel 3 can be sleeved on the latching portion 23, so that the combination of the ratchet wheel 3 and the latching portion 23 can be accommodated in the upper opening of the barrel-shaped cavity 41 of the flap portion, and the lower portion of the positioning core rod 22 can be The through hole at the bottom of the barrel cavity 41 protrudes, and the ratchet wheel 3 and the hook 24 structure respectively cooperate with the ratchet groove 42 and the chute 43 of the inner wall of the barrel cavity to realize one-way rotation.

The handle portion 1 is detachably provided on the positioning plate 21 of the core rod 2, and the handle portion 1 can drive the core rod 2 to rotate.

In the artificial mitral valve valve holder of the present invention, the handle portion 1 is used for the operator to hold and rotate in a clockwise or counterclockwise direction to form a driving force for tightening the flap angle b of the artificial mitral valve, and the handle The core rod 2 connected to the portion 1 is matched with the ratchet wheel 3 and transmits the driving force from the handle portion 1 to the ratchet wheel 3, and the ratchet wheel 3 is matched with the ratchet groove 42 of the inner wall of the barrel-shaped cavity and the ratchet wheel 3 can only be single in the ratchet groove 42. Rotating; when the artificial mitral valve is placed and supported on the lower outer edge of the valve support portion, it is radially and axially fixed by the tightening wire a, wherein one end of the tightening wire a can be fixed On the positioning mandrel 2, the other end is penetrated from the inner side of the wire holding portion 46 (particularly from the portion of the positioning mandrel 22 protruding from the bottom hole of the barrel cavity) to the lower side of the wire holding portion 46, thereby being located The flap angle b of the artificial mitral valve below the wire holding portion 46 is fixed after passing through, thereby tightening the flap angle b of the artificial mitral valve by driving the tightening line a when the handle portion 1 is rotated; The ratchet 3 can only rotate in one direction in the ratchet groove 42, so the flap angle c does not reappear after tightening The opening allows the valve to be securely attached to the holder in both the radial and axial directions, providing a good fixation, support and holding action for the artificial mitral valve during storage, transport and surgery.

In an embodiment, the handle portion 1 may include a handle base 12 and a detachable handle 13. The handle seat may be provided with a first threading hole, and the positioning plate 21 of the core rod 2 may be provided with a second corresponding to the first threading hole. needle. The first threading hole and the second threading hole may have the same diameter, for example, each of 0.3-1.5 mm; the opposite first threading hole and the second threading hole may be used to form a binding between the handle seat 12 and the core rod positioning plate 21, thereby The relative fixing of the handle base 12 and the core positioning plate 21 is achieved. In addition, the detachable handle 13 can be screwed to the handle base 12, for example, and an axially disposed internally threaded hole can be formed in the handle base 12, and an external thread matching the internal threaded hole can be formed on the handle 13. Thereby, the mounting and dismounting of the handle 13 on the handle base 12 is facilitated. In particular, an axially disposed internal threaded hole may be formed in an upper portion of the handle base 12, and a guide hole coaxial with the internally threaded hole and having no thread is formed below the internally threaded hole, and the size of the guide hole may be The handles 13 are mated and the guide holes facilitate axial orientation of the handle, thereby preventing the handle 13 from being axially offset and unable to simultaneously tighten the three flap angles of the artificial mitral valve to a predetermined position.

Further, the first threading hole and the second threading hole may be two, and a first tangential groove 123 is disposed between the first threading holes. The diameters of the two first threading holes 121a, 121b may be the same, and the diameters of the two second threading holes 214a, 214b may be the same. The two threading holes are provided to facilitate fixing the ends of the wire, the first tangential groove 123 The arrangement facilitates cutting of the wire that binds the handle base 12 and the core positioning plate 21, thereby facilitating separation of the handle base 12 from the core positioning plate 21. The first wire groove 123 may be longitudinally penetrated and may have a width of 0.3-2.0 mm; in addition, the first tangential groove may be disposed to be biased toward one of the two first threading holes, thereby effectively preventing the wire end from being fixedly formed. The line junction interferes with the tangential process.

In an embodiment, a fixing hole 212 is defined in an upper portion of the positioning plate 21 of the core rod 2. The lower portion of the handle base 12 is provided with a fixing rod 14 that can cooperate with the fixing hole 212, and the fixing rod 14 and the fixing hole 212 pass the card. The groove structure realizes the holding and fixing. Specifically, at least one radial fixing rib 15 may be disposed on an outer circumference of the upper portion of the fixing rod, and a fixing groove 213 matching the fixing rib is disposed at a position corresponding to the fixing rib of the core rod positioning plate, the fixing rib 15 The width can be 0-0.2 mm larger than the width of the fixing groove 213, and the height of the fixing rib can be 0-0.2 mm smaller than the depth of the fixing groove, that is, When the fixing ribs are placed in the fixing groove, a gap of 0-0.2 mm is formed between each other. Further, the diameter of the fixing rod 14 may be equal to or slightly smaller than the diameter of the fixing hole 212.

Further, the holding portion of the upper outer diameter of the positioning core rod 22 is a cage structure 23 having three center pillars 231 fixed at the lower end surface of the positioning plate, and the lower ends of the center pillars 231 are respectively The outer ends of the beams 232 are connected to each other. The inner ends of the beams 232 are joined to the positioning core rods 22. The lower end edges of the central columns 231 form a hook structure 24, and the three beams 232 are respectively provided with a through-line through holes for threading the tightening lines. 233. Specifically, the hook structure 24 can be, for example, a protrusion extending outward from the outer end of the beam 232, and can cooperate with the sliding groove 43 of the inner wall of the barrel cavity to achieve relative rotation, and the length of the protrusion extending from the outer end of the beam can be It is 0.1-2 mm; at the same time, the sliding groove 43 provided in the inner wall of the barrel cavity may be an annular sliding groove.

The positioning mandrel 22 of the above structure can realize the fixing of one end of the tightening wire a. For example, one end of the three tightening wires a can be respectively wound from the upper one of the three beams 232 from below, and the wire a is tightened. The ends are tightened and then threaded out of the tether through holes 233 and wound around the projecting core 22 from the projecting portion of the through hole at the bottom of the barrel. The diameter of the through hole of the tie can be 0.3-2.0 mm. Further, the lower portion of the positioning mandrel is a columnar body 25, one end of which is connected to the junction of the beam and the other end of which protrudes from the through hole at the bottom of the barrel-shaped cavity. The columnar body may have a length of 2-10 mm and a diameter of 0.5-5 mm.

Further, the outer circumference of the ratchet wheel 3 is provided with at least one elastic tooth tangential to the outer circumference of the ratchet wheel, for example, 1-8; in particular, when a plurality of elastic teeth are provided, the orientations of the plurality of elastic tooth extending ends are the same, for example, Orient clockwise or counterclockwise. In one embodiment, the outer circumference of the ratchet is provided with three elastic teeth which are tangential to the outer circumference of the ratchet and extend counterclockwise, which can be rotated when the handle rotates clockwise, and when the handle rotates counterclockwise and barrel shape The ratchet groove of the inner wall of the chamber is locked without rotation. The setting method can avoid the re-opening of the flap angle after tightening the flap angle of the artificial mitral valve, so that the fixing effect on the flap angle is good.

In an embodiment, the wire holding portion 46 may be a two-stage stepped structure, and the first step is fixed on the outer periphery of the lower portion of the barrel-shaped cavity 41 for holding the supporting surface of the artificial mitral valve c. 45 is located below the inner side of the second step, and three spaced-apart threading holes 461a, 461b, 461c are circumferentially opened on the second step, and the first step is provided with the tightening line from the positioning core The rod extension portion is threaded through the wire passage 47 of the threading hole. Specifically, the line passage 47 can be axially disposed on the outer side of the first stage.

Further, the lower width of the valve support portion is limited to be in contact with the artificial mitral valve without touching the leaflet, and the diameter of the threading hole is 0.3-2 mm. One end of the three tightening wires is fixed to the positioning mandrel 22, and the other end can be respectively passed through the wire passage 47 of the first wire holding portion (which may be any one of the three wire holding portions), since the first The threading hole 461a of the thread holding portion (the threading hole at the end portion) penetrates from the lower portion of the flap angle b located below the first thread holding portion to the lower portion of the adjacent flap corner, and then is threaded from the first thread holding portion. The hole 461b (the threading hole adjacent to the threading hole 461a) is pierced, and then penetrates from the threading hole 461c of the first wire holding portion (the threading hole adjacent to the threading hole 461b) and fastens the end of the flap corner. The threading hole 461c penetrates the tightening line.

Further, a second tangential groove 462 is defined between two of the three spaced-aperture-threaded holes. Specifically, the second tangential groove is disposed between the threading hole 461b and the threading hole 461c, and the depth thereof is not limited to the axial penetration, and the width may be 0.3-2 mm, and the length may be 2-10 mm. The arrangement of the second tangential groove facilitates the cutting of the tightening line, so that the flap angle of the artificial mitral valve can be conveniently opened.

The wire holding portion is configured to achieve radial tightening of the flap angle of the artificial mitral valve by three tightening wires when the handle is rotated, and to stably position the valve in the radial and axial directions on the retainer In order to avoid damage caused by excessive deformation of the flap angle. In addition, the tightening resistance when the flap angle is tightened is greatly reduced, thereby making the operation more convenient.

In addition, two pairs of protrusions distributed along the axial direction are respectively disposed in the corresponding regions of the outer circumference of the barrel-shaped cavity of the flap portion, and the pair of protrusions are disposed to fix the valve hanger to the pair of protrusions between. The pair of projections facilitate securing the valve holder in the valve bottle. In particular, the lower protrusion 52 may be larger than the upper protrusion 51, and a shaped hole matching the upper protrusion 51 or slightly larger than the upper protrusion 51 may be formed at a position corresponding to the upper protrusion 52 of the lower protrusion 52, thereby It is advantageous for the formation of the upper protrusions 51 during the mold making.

The following is a specific method of using the embodiments of the present invention. First, the handle portion 1 is connected to the core rod 2 by a tightening line. The specific operation mode is that one end of the tightening line first enters the corresponding second threading hole 214a of the core rod through the first threading hole 121a of the handle seat, and passes through the positioning. After the plate 21 enters the first threading hole 121b through the second threading hole 214b toward the handle portion 1, the other end of the tightening line is knotted and fixed at the first threading hole 121b. The above step completes the handle portion 1 It is fixed to the connection with the core rod 2. Next, the connection of the core rod to the flap angle is performed, and since there are three flap angles, the process requires three tightening lines a. The specific steps are as follows: one end of one of the tightening lines can be respectively first After winding the beam from below one of the three beams 232, it is fastened to the end of the tightening wire, and then passes out from the wire through hole 233 and is wound around the through hole of the positioning mandrel 22 from the bottom of the barrel cavity. The upper portion, that is, the columnar body 25, is then pierced from the line passage 47, and is inserted from the first thread holding portion after the threading hole 461a (the threading hole at the end) of the first wire holding portion is inserted. The lower corner of the flap is passed to the lower portion of the adjacent flap, and then passes through the threading hole 461b from the first wire holding portion, and then penetrates from the threading hole 461c of the first wire holding portion and fastens the end of the tightening wire. The tightening line penetrated from the third threading hole 461c. The remaining two flap angles are then tightened together with the other two tightening lines in the same operation.

The connection method of the artificial mitral valve holding device is to fix the handle portion 1 and the core rod 2 through a tightening line, and then realize the artificial mitral valve holding device and the artificial two through the other three tightening lines. The connection of the cusp valve angle, when the flap angle is to be contracted during transportation or surgery, since the engagement of the ratchet wheel 3 and the ratchet groove 42 can only achieve one-way rotation, as shown in FIG. 1 in this embodiment, Only clockwise rotation can be achieved, so by the clockwise rotation of the handle 13, the hook structure 24 of the drive mandrel 2 slides clockwise in the chute 43 in the barrel cavity 41, causing the columnar body 25 to rotate clockwise from A section of the columnar body to the angle of the flap is wound and contracted onto the columnar body, thereby causing the flap angle to contract. When it is necessary to separate the artificial mitral valve valve from the artificial mitral valve, the tightening line is first cut in the first tangential groove to separate the handle portion from the core rod, and then the second tangential groove is used to cut off the rest. Three connecting wires realize the separation of the wire holding portion from the artificial mitral valve.

The combination of the components of the embodiment of the invention and the over-line channel on the wire-holding portion achieves radial contraction of the mitral valve leaflet angle, and the mold structure is simple, and the combination and disassembly are easy, which greatly reduces the manufacturing cost. . When it is used for different types of mitral valve, it is only necessary to replace the flap of the corresponding model, which greatly reduces the cost of use.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims (10)

An artificial mitral valve valve holder, comprising: a handle portion, a core rod, a ratchet wheel and a flap portion; wherein The holding portion has a barrel-shaped cavity with an upper opening and a through hole at the bottom, the inner wall of the barrel-shaped cavity is provided with a ratchet groove and a sliding groove, and the outer side of the holding valve portion is provided with three valves in the circumferential direction of the barrel-shaped cavity a support portion, a lower outer edge of each of the valve support portions forms a support surface for supporting the artificial mitral valve, and the three support surfaces are circumferentially encircled along the circumferential direction of the retaining flap and are supported by the radial dimension The inner diameter of the suture edge of the artificial mitral valve is the same, and the upper part of the support surface is provided with a wire holding portion, and the wire holding portion can pass the tightening wire from the inner side of the wire holding portion to the lower side of the wire holding portion; The top end of the core rod has a positioning plate, the lower end surface of the positioning plate is provided with a positioning core rod, and the upper portion of the positioning core rod forms a clamping portion with an increased outer diameter, and the lower edge of the clamping portion forms a hook structure, and the ratchet can be sleeved on the The latching portion enables the combination of the ratchet and the retaining portion to be received in the upper opening of the barrel-shaped cavity of the retaining flap, and the lower portion of the positioning stem can pass from the bottom of the barrel-shaped cavity The hole protrudes, and the ratchet and the hook structure respectively cooperate with the ratchet groove and the chute of the inner wall of the barrel cavity to realize one-way rotation; The handle portion is detachably disposed on a positioning plate of the core rod, and the handle portion is capable of driving the core rod to rotate. The artificial mitral valve valve holder according to claim 1, wherein the handle portion comprises a handle seat and a detachable handle, and the handle seat is provided with a first threading hole, and the positioning plate of the core rod A second threading hole is provided corresponding to the first threading hole. The artificial mitral valve valve holder according to claim 2, wherein the first threading hole and the second threading hole are two, and the first threading hole is provided with a first cut. Trunking. The artificial mitral valve valve holder according to claim 2, wherein the positioning portion on the positioning plate of the core rod is provided with a fixing hole, and the lower portion of the handle seat is provided with a fixing rod capable of cooperating with the fixing hole, and The fixing rod and the fixing hole are locked by the card slot structure. The artificial mitral valve valve holder according to claim 1, wherein the clamping portion of the upper outer diameter of the positioning core rod is a cage structure, and the cage structure has three upper ends fixed to the positioning. a central column of the lower end surface of the plate, the lower end of the center column is respectively connected with the outer end of a beam, the inner end of the beam meets the positioning core rod, and the lower end edge of the center column forms the hanging The hook structure has three through-holes for threading the fastening lines. The artificial mitral valve valve holder according to claim 5, wherein the lower portion of the positioning mandrel is a columnar body, one end of which is connected to the junction of the beam, and the other end is from the bottom of the barrel cavity. The through hole extends. The artificial mitral valve valve holder according to claim 1, wherein at least one elastic tooth tangential to the outer circumference of the ratchet is provided on the outer circumference of the ratchet. The artificial mitral valve valve holder according to claim 1, wherein the wire holding portion is a two-stage stepped structure, and the first step is fixed on the outer periphery of the lower portion of the barrel-shaped cavity of the valve holding portion. The support surface for forming support for the artificial mitral valve is located below the inner side of the second step, and three spaced-aperture holes are circumferentially opened on the second step, and on the first step A through-line passage is provided which can pass the tightening wire from the protruding portion of the positioning core to the threading hole. The artificial mitral valve valve holder according to claim 8, wherein a second tangential groove is defined between two of the three spaced-aperture threading holes. The artificial mitral valve valve holder according to claim 1, wherein two pairs of protrusions distributed along the axial direction are respectively disposed in corresponding regions of the outer circumference of the barrel-shaped cavity of the lobes, and A pair of raised arrangements enable the valve hanger to be secured between the pair of projections.

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