CN212996885U - Blood vessel shunt frame and blood vessel support - Google Patents

Abstract

The utility model provides a blood vessel reposition of redundant personnel frame, it includes that main part pipe and axial are inserted and is located the at least branch pipe of the inner chamber of main part pipe, the main part pipe includes pipy main part tectorial membrane, at least one the branch pipe includes pipy branch's tectorial membrane, branch's tectorial membrane holding in the inner chamber of main part tectorial membrane, the distal end of main part tectorial membrane with be equipped with first seal membrane between the distal end of branch's tectorial membrane, in order to incite somebody to action main part tectorial membrane's inner chamber separates out a main accent and an at least sub-accent, the near-end of branch's tectorial membrane is equipped with nearly terminal accent, is at least in branch's tectorial membrane in around nearly terminal accent with. The utility model also provides a blood vessel support that is equipped with blood vessel reposition of redundant personnel frame.

Description

Blood vessel shunt frame and blood vessel support

Technical Field

The utility model relates to an implantable vascular technical field especially relates to blood vessel reposition of redundant personnel frame and be provided with blood vessel support of blood vessel reposition of redundant personnel frame.

Background

Aortic aneurysm refers to the local or diffuse abnormal dilatation of the aortic wall, pressing the surrounding organs to cause symptoms, with the main risk of nodular rupture. It is common to occur in the ascending aortic arch, descending thoracic aorta, thoraco-abdominal aorta and abdominal aorta. Aortic aneurysms can be classified by structure into true aortic aneurysms and false aortic aneurysms. Aortic aneurysm causes pressure increase inside blood vessel, so it is progressively enlarged, if it develops for a long time, finally, it is ruptured, the larger the tumor body, the higher the possibility of rupture. Statistically, 90% of thoracic aortic aneurysms die within 5 years and 75% of abdominal aortic aneurysms die within 5 years without surgical treatment.

Aortic dissection, which refers to the rupture of the media of the thoracic aorta, the intraluminal bleeding, and the entry of blood between the media and adventitia of the vessel wall, is also a serious aortic disease. Due to the impact of the blood flow, once the aortic dissection has been formed, the tear can extend in the direction of the blood flow, the dissection and the false lumen can expand, and the true lumen can be compressed. The risks that may arise for aortic dissection patients therefore include: (1) threatened to complete rupture of the blood vessel, and once the blood vessel is completely ruptured, the death rate is extremely high; (2) the interlayer is gradually enlarged and compresses the true cavity, so that the blood supply of the far end of the blood vessel is reduced. In most cases, aortic dissection is secondary to, or co-present with, a thoracic aortic aneurysm. The oxford angiopathy study in uk showed that the incidence of aortic dissection in the natural population was approximately 6/10 million per year, with more men than women, and an average age of 63 years. The incidence rate of aortic dissection is far higher than that of European and American countries in China, and the incidence age is younger.

The aorta diseases may involve branch arteries, and once the branch arteries are involved, the aorta diseases can be solved by an interventional method. At present, arterial cavity treatment is carried out at home and abroad, namely a minimally invasive method is adopted, and a graft, namely an arterial stent, is placed into a diseased artery by means of a vascular cavity to treat arterial diseases and improve blood supply, so that the treatment aim is fulfilled. The artery stent in the vascular cavity consists of a tubular rigid wire stent and a polymer film fixed on the outer side of the tubular rigid wire stent, wherein the tubular rigid wire stent is formed by folding elastic rigid wires into a ring shape after Z-shaped folding, and then sewing or bonding a plurality of rings with the polymer film together to form a covered stent.

Among the prior art, the support that relates to artery branch treatment commonly used includes chimney support, the many branches of integral type support, the type support of windowing, and these supports are subject to the structure of support, often appear interior hourglass problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can prevent interior blood vessel reposition of redundant personnel frame that leaks, and be provided with blood vessel support of blood vessel reposition of redundant personnel frame.

In order to solve the technical problem, the utility model provides a blood vessel reposition of redundant personnel frame, it includes that main part pipe and axial are inserted and is located at least branch pipe of the inner chamber of main part pipe, the main part pipe includes pipy main part tectorial membrane, at least one the branch pipe includes pipy branch's tectorial membrane, branch's tectorial membrane holding in the inner chamber of main part tectorial membrane, the distal end of main part tectorial membrane with be equipped with first seal membrane between the distal end of branch's tectorial membrane, in order to incite somebody to action main part tectorial membrane's inner chamber is separated out a main accent and at least one sub-accent, the proximal end of branch's tectorial membrane is equipped with nearly terminal accent, at least branch's tectorial membrane in around nearly terminal accent with be.

Preferably, the leakage preventing member is a leakage preventing piece connected to the periphery of the proximal terminal cavity opening, the leakage preventing piece being used for sealing a gap between the main body covering film and the branch covering film.

Preferably, two opposite sides of the proximal end of the branch covering membrane are respectively provided with a piece of leakage-proof covering membrane, and each leakage-proof covering membrane is connected between the branch covering membrane and the main body covering membrane.

Preferably, each leak protection tectorial membrane is the leak protection of trilateral and covers the diaphragm, the first edge sealing connection that the diaphragm was covered in the leak protection in branch tectorial membrane, the second edge sealing connection that the diaphragm was covered in the leak protection in main part tectorial membrane, the third edge connection that the diaphragm was covered in the leak protection in branch tectorial membrane with between the main part tectorial membrane.

Preferably, an elastic first supporting member is arranged at a third edge of each leakage-proof covering film, the first supporting member extends along the third edge, and two opposite ends of the first supporting member are respectively connected between the branch covering films and the main body covering film.

Preferably, the leakage-proof piece is a leakage-proof frame arranged on two opposite sides of the branch covering film, and the two leakage-proof frames are used for sealing a gap between the branch covering film and the main body covering film.

Preferably, each leak protection frame including laminate in the distal end face of first seal membrane, deviate from the near-end face, the laminating of distal end face the first binding face, the laminating of branch tectorial membrane the second binding face of main part tectorial membrane, and connect in sealed face between distal end face, near-end face, first binding face and the second binding face, at least near-end face be equipped with the second seal membrane and sealed face is equipped with the sealed tectorial membrane of third.

Preferably, the second sealing membrane on the proximal face is sealingly connected between the proximal ends of the branch membranes, the main body membrane and the third sealing membrane on the sealing face.

Preferably, the distal end face and the first sealing membrane share a membrane, the first abutment face and the branch membrane share a membrane, the second abutment face and the body membrane share a membrane, and a third sealing membrane on the sealing face is connected between the first sealing membrane, the second sealing membrane on the proximal end face, the branch membrane and the body membrane.

Preferably, the second sealing membrane on the proximal face is of unitary construction with the third sealing membrane on the sealing face.

Preferably, the inner cavity of each leakage-proof frame is filled with an expandable material, or the inner cavity of each leakage-proof frame is provided with a villus structure.

Preferably, the sub-cavity of the first sealing membrane is lower than the far end face of the main cavity, so that the first sealing membrane is concave towards the edge of the sub-cavity, and the first sealing membrane and the side wall of the main tube form a bell mouth.

Preferably, the distal end of the branch tectorial membrane is provided with a distal terminal cavity mouth which is connected around the sub-cavity mouth in a sealing way, and the plane enclosed by the distal terminal cavity mouth is inclined towards the proximal end relative to the radial direction of the main body tube.

Preferably, the edge of the main cavity opening is provided with a fixed piece, and the fixed piece is fixed on the sealing film at the edge of the side, away from the side wall of the main body pipe, of the main cavity opening.

Preferably, the fixed part is a positioning rod, the positioning rod extends towards the center of the main body pipe along the edge of one side of the main cavity opening on the first sealing membrane, which is connected with the side wall of the main body pipe, and two opposite ends of the positioning rod are respectively connected with the side wall of the main body pipe.

Preferably, the first sealing film is provided with a supporting ring at the edge of the sub-cavity opening.

Preferably, be provided with at least one support piece on the first seal membrane, at least one support piece connect in the fixed profile piece with between the support ring, at least one support piece is fixed in the bracing piece of first seal membrane, bracing piece one end connect in the fixed profile piece, the other end of bracing piece connect in the support ring.

Preferably, the edge of the main cavity opening and/or at least one sub-cavity opening is provided with a developing structure.

The utility model also provides a vascular stent, it includes main part support and blood vessel reposition of redundant personnel frame, blood vessel reposition of redundant personnel frame includes that main part pipe and axial are inserted and is located at least branch pipe of the inner chamber of main part pipe, main part pipe includes pipy main part tectorial membrane, at least one the branch pipe includes pipy branch tectorial membrane, branch tectorial membrane holding in the inner chamber of main part tectorial membrane, be equipped with first seal membrane between the distal end of main part tectorial membrane and the distal end of branch tectorial membrane to divide the inner chamber of main part tectorial membrane into a main mouth and at least one sub-mouth, the near end of branch tectorial membrane is equipped with near terminal mouth, is equipped with the leak protection piece at least between the branch tectorial membrane around near terminal mouth and the internal surface of main part tectorial membrane; one end of the main body support penetrates through the main cavity opening on the sealing membrane and is inserted into the main body pipe of the blood vessel shunt frame, and the leakage-proof piece is tightly attached to the outer surface of the main body support.

The utility model provides a blood vessel reposition of redundant personnel frame is through being equipped with leak protection spare around the nearly terminal accent of branch tectorial membrane with the internal surface of main part tectorial membrane, and be equipped with between the distal end of main part tectorial membrane and the distal end of branch tectorial membrane first seal membrane to divide the inner chamber of main part tectorial membrane into a main accent and at least one sub-accent, the distal end sealing connection of branch tectorial membrane is in around the accent; therefore, when the main body bracket is inserted into the main cavity of the main body tube, the edge of the main cavity of the first sealing film can be tightly attached to the outer surface of the main body tube, and the edge of the leakage-proof piece can also be tightly attached to the outer surface of the main body tube, so that the far end and the near end of the blood vessel shunting frame are tightly attached to the outer surface of the main body bracket inserted into the main cavity, and internal leakage can be effectively prevented.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

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

Fig. 2 is a perspective exploded view of the sub-body tube and the leakage preventing member of fig. 1.

Fig. 3 is a knot schematic diagram of another embodiment of the anti-leakage member of the blood vessel shunting frame according to the first embodiment of the present invention.

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

Fig. 5 is a perspective view of another perspective view of the shunt stand of fig. 4.

Fig. 6 is an exploded perspective view of the shunt holder and the leakage prevention member of fig. 4.

Fig. 7 is a knot schematic diagram of another embodiment of the leak-proof member of the blood vessel shunting frame according to the second embodiment of the present invention.

Fig. 8 is a schematic perspective view of a blood vessel shunting frame according to a second embodiment of the present invention in one of the usage states.

Fig. 9 is a sectional view taken along line IX-IX in fig. 8.

Fig. 10 is a schematic perspective view of a blood vessel shunting frame according to a third embodiment of the present invention.

Fig. 11 is a schematic perspective view of a blood vessel shunting frame according to a fourth embodiment of the present invention.

Fig. 12 is a perspective view of one of the leakage prevention members of the shunt stand of fig. 11.

Fig. 13 is a schematic perspective view of a blood vessel shunting frame according to a fourth embodiment of the present invention in one of the usage states.

Fig. 14 is a sectional view taken along the line XIV-XIV in fig. 13.

Fig. 15 is a schematic perspective view of a blood vessel shunting frame according to a fifth embodiment of the present invention.

Fig. 16 is a schematic perspective view of a blood vessel shunting frame according to a sixth embodiment of the present invention.

Fig. 17 is a perspective view of one of the leakage prevention members of the shunt stand of fig. 16.

Fig. 18 is a schematic perspective view of a blood vessel shunting frame according to a seventh embodiment of the present invention.

Fig. 19 is a schematic perspective view of a blood vessel shunting frame according to an eighth embodiment of the present invention.

Fig. 20 is a schematic perspective view of a blood vessel shunting frame according to a ninth embodiment of the present invention.

Fig. 21 is a schematic perspective view of a blood vessel shunting frame according to a tenth embodiment of the present invention.

Fig. 22 is a schematic perspective view of a blood vessel shunting frame according to an eleventh embodiment of the present invention.

Fig. 23 is a schematic perspective view of a blood vessel shunting frame according to a twelfth embodiment of the present invention.

Fig. 24 is a schematic perspective view of a blood vessel shunting frame according to a thirteenth embodiment of the present invention.

Fig. 25 is a schematic perspective view of a blood vessel shunting frame according to a fourteenth embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.

Furthermore, the following description of the various embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments in which the invention may be practiced. Directional phrases used in this disclosure, such as "upper," "lower," "front," "rear," "left," "right," "inner," "outer," "side," and the like, refer only to the orientation of the attached drawing figures and, thus, are used in a better and clearer sense to describe and understand the present invention rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered limiting of the invention.

In the description of the present invention, the term "proximal" refers to the end near the heart, and the term "distal" refers to the end away from the heart. The utility model discloses in high, low for the main part pipe tectorial membrane, the terminal surface that surpasss the main part pipe tectorial membrane is called high, does not surpass being called low of main part pipe tectorial membrane terminal surface, and this definition is only for the presentation convenience, can not understand as right the utility model discloses a restriction.

Referring to fig. 1 and fig. 2 together, fig. 1 is a schematic perspective view of a blood vessel shunting frame 100 according to a first embodiment of the present invention; fig. 2 is a perspective exploded view of the sub-body tube and the leakage preventing member of fig. 1. The utility model provides a blood vessel shunt bracket 100, which comprises a main body tube 20 and at least one shunt tube 30 axially inserted into the inner cavity of the main body tube 20; the main tube 20 comprises a tubular main body coating 22, at least one branch tube 30 comprises a tubular branch coating 31, the branch coating 31 is accommodated in an inner cavity of the main body coating 22, a first sealing film 50 is arranged between the distal end of the main body coating 22 and the distal end of the branch coating 22 so as to divide the inner cavity of the main body coating 22 into a main cavity port 52 and at least one sub-cavity port 54, a proximal end of the branch coating 31 is provided with a proximal terminal cavity port 32, and a leakage-proof piece 40 is arranged at least between the periphery of the branch coating 31 at the proximal terminal cavity port 32 and the inner surface of the main body coating 22. The distal end of the branch overlaminate 31 is provided with a distal terminal lumen port 34, the distal terminal lumen port 34 being sealingly connected around a sub-port 54 of the first sealing membrane 50.

The utility model provides a blood vessel reposition of redundant personnel frame 100 is through being equipped with leak protection piece 40 around the near-end cavity mouth 32 of branch tectorial membrane 31 and the internal surface of main part tectorial membrane 22, and is equipped with first seal membrane 50 between the distal end of main part tectorial membrane 22 and the distal end of branch tectorial membrane 22 to divide the inner chamber of main part tectorial membrane 22 into a main chamber mouth 52 and at least one sub-chamber mouth 54, the distal end sealing connection of branch tectorial membrane 31 is around sub-chamber mouth 54; therefore, when the main stent is inserted into the main lumen 52 of the main tube 20, the edge of the main lumen 52 of the first sealing film 50 can be closely attached to the outer surface of the main tube 20, and the edge of the leakage preventing member 40 can also be closely attached to the outer surface of the main tube 20, so that the distal end and the proximal end of the shunt holder 100 can be closely attached to the outer surface of the main stent inserted into the main lumen 52, and internal leakage can be effectively prevented.

The main tube 20 further includes a main tube support frame 24 secured to the wall surface of the main body covering membrane 22. The sub-tube 30 is surrounded by a tubular branch coating 31, thereby dividing the inner cavity of the main tube 20 into a main tube cavity 25 and a sub-tube cavity 33, the proximal terminal cavity port 32 is located at the proximal end of the sub-tube cavity 33, and the distal sub-cavity port 34 is located at the distal end of the sub-tube cavity 33. The distal end of the main lumen 25 communicates with the main lumen port 52 and the distal end of the sub-lumen 33 communicates with the sub-lumen port 54. The main tube 20 is the main structure of the blood vessel shunt frame 100, and the shape of the transverse end surface of the main tube 20 is a circle or an ellipse matched with the blood vessel. The main tube supporting framework 24 is sewn on the main body covering film 22, and the main tube supporting framework 24 is formed by arranging a plurality of annular waveform supporting rods 242 at intervals along the axial direction of the main body covering film 22. Each annular waveform supporting rod 242 may be an equal-height-wave annular supporting rod or an equal-height-wave annular supporting rod, and the equal-height-wave annular supporting rod means that the heights of the wave crests and the wave troughs on the annular waveform supporting rod 242 are the same, that is, the wave crests and the wave troughs are respectively on the same plane; the high-low wave annular support rods mean that the heights of all wave crests on the annular waveform support rods 242 are different, and the heights of all wave troughs can also be different.

The main body tube supporting framework 24 includes a plurality of sine-wave-shaped annular wave-shaped supporting rods 242, and the annular wave-shaped supporting rods 242 are arranged at intervals along the axial direction of the main body covering film 22. Each sine waveform of each of the ring-shaped waveform supporting rods 242 includes a peak 2421, a trough 2423 and a connecting rod 2425 connected between the peak 2421 and the trough 2423. Each of the annular waveform support rods 242 is woven from a superelastic nickel-titanium wire, and the wire diameter (i.e., diameter) of the superelastic nickel-titanium alloy wire can be selected to be in the range of 0.1mm to 0.6 mm. Each annular waveform supporting rod 242 is provided with a connecting sleeve, and the connecting sleeve connects two opposite ends of the annular waveform supporting rod 242, that is, two opposite ends of the annular waveform supporting rod 242 are accommodated in the connecting sleeve, and then two ends of the nickel-titanium wire are fixed in the connecting sleeve through mechanical compression or welding.

In this embodiment, the annular waveform support rods 242 are woven by nickel titanium wires with a diameter of 0.2-0.8mm, the number of sine waves is 6-10, and the vertical height of the annular waveform support rods 242 is 6-15 mm.

In other embodiments, the number of sine waves may be other numbers, and the vertical height of the ring-shaped wave supporting bar 242 may be any height.

In other embodiments, the main tube support armature 24 may be a braided mesh structure or a cut mesh structure.

The main body coating 22 and the branch coating 31 are made of dacron, PTFE, PET, or other polymer materials, and the main tube supporting framework 24 is sewn to the main body coating 22 by sewing lines, i.e., the sewing lines may follow the waveform of each of the annular waveform supporting rods 242 along the entire main tube supporting framework 24. The suture can also be formed by sewing each of the annular wavy support rods 242 to the main body covering film 22 through a plurality of sewing knots which are distributed at unequal intervals.

As shown in fig. 2, the sub-body tube lumen 33 is formed by independently surrounding the branch coating 31, and the cavity between the branch coating 31 and the main body coating 22 is the main body tube lumen 25. Through the design, when the shunt bracket 100 is pressed, the overall diameter of the shunt bracket 100 can be reduced, so that the diameter of a sheath used for assembling a delivery system can be reduced, and the delivery of the shunt bracket 100 is facilitated. The diameter of the main body tube inner cavity 25 is larger than that of the sub body tube inner cavity 33, the number of the sub body tubes 30 can be set according to actual requirements, and is generally 1-4, preferably 1-3; the first sealing film 50 is formed with 1-4 sub-cavity openings 54, preferably 2-4 sub-cavity openings 54 corresponding to the sub-body tube 30. The cross-sectional shapes of the main body tube inner cavity 25 and the sub-body tube inner cavity 33 are circular, elliptical, fusiform or irregular curved surface, etc.

In this embodiment, the number of the sub-body tubes 30 is one, the sub-body tubes 30 are attached to the inner surface of the main body tube 20, and the distal ends of the sub-body tubes 30 are communicated with the sub-cavities 54.

The first sealing membrane 50 is arranged at the distal end of the main tube 20, the first sealing membrane 50 is connected to the main body covering membrane 22 in a sealing mode, the main cavity 52 and the sub-cavity 54 are both arranged on the first sealing membrane 50, and the distal end of the branch covering membrane 31 is connected to the first sealing membrane 50 in a sealing mode corresponding to the sub-cavity 54. That is, the first sealing film 50 connects the main body covering film 22 and the branch covering 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 cavity opening 52 is smaller than the radial cross-sectional area of the main body covering film 22, the opening area of the sub-cavity opening 54 is smaller than the opening area of the main cavity opening 52, the opening area of the main cavity opening 52 is larger than the opening area of the single sub-cavity opening 54, and the ratio of the opening area of the main cavity opening 52 to the opening area of the single sub-cavity opening 54 is preferably 3:1-6: 1. Further, the open area of the primary lumen 52 is greater than the sum of the open areas of all of the sub-lumen ports 54, thereby providing more ample space for the primary blood flow ports.

In other examples, the first sealing membrane 50 may be a plane parallel to the radial direction of the main body tube 20, i.e., the first sealing membrane 50 is a plane perpendicular to the central axis of the main body tube 20.

In other embodiments, the open area of the main port 52 may be the same as the open area of the sub-port 54.

As shown in fig. 1, the at least one sub-tube 30 is sealingly abutted to the at least one sub-cavity opening 54 of the first sealing membrane 50. That is, the sub-body tube lumen 33 of the sub-body tube 30 communicates with the sub-lumen port 54. The sub-tube 30 is formed independently of the tubular branch coating 31, or formed by surrounding the semi-tubular branch coating 31 and the main body coating 22. The edge of the at least one sub-cavity opening 54 of the first sealing membrane 50 is provided with a sizing ring, and the edge of the proximal sub-cavity opening 32 of the sub-body tube 30 is also provided with a positioning ring; the two sizing rings are used for expanding the branch tectorial membrane 31 so as to ensure that the branch tectorial membrane 31 keeps a tubular shape. When having inserted the branch support in the subchamber mouth 54, the design ring at the edge of an at least subchamber mouth 54 can with branch support is fixed in the daughter pipe 30, promptly, design ring enable first seal membrane 50 with the sealed subsides of the surface of branch support connect, prevent interior hourglass. In addition, the daughter tube 30 may extend the proximal anchoring region of the branch stent, further securing the branch stent, increasing the stability of the branch stent after release. The axial length of the sub-body tube 30 may be less than, greater than, or equal to the axial length of the main body tube 20. In the case that a plurality of sub-tubes 30 are disposed on the same vascular shunt stent 100, the edge of the first sealing membrane 50 at the distal end of each sub-tube 30 may be provided with the sizing ring, and the lengths of the sub-tubes 30 may be the same or different.

The leak preventer 40 is a leak prevention sheet attached around the proximal terminal cavity port 32 for sealing a gap between the main body cover film 22 and the proximal end of the branch cover film 31. Specifically, the leakage prevention member 40 may be formed by splicing a plurality of leakage prevention sheets, the leakage prevention sheets are respectively connected between the inner surface of the main body covering film 22 and the outer surface of the near end of the branch covering film 31 in a sealing manner, the leakage prevention sheets surround a through hole, and the edge of the through hole of the leakage prevention member 40 is sealed and attached to the outer surface of the branch covering film 31; preferably, the hole edge of the through hole of the grommet 40 is sealingly connected to the edge of the proximal terminal cavity 32, and the outer periphery of the grommet 40 on the side facing away from the main cavity 52 is sealingly connected to the inner surface of the main body cover film 22.

In other embodiments, the through holes surrounded by the anti-leakage sheets are not complete through holes, and can be only connected with the left and right sides of the branch tectorial membrane 31 in a sealing way, the rear side of the branch tectorial membrane 31 is connected with the main body tectorial membrane 22 in a sealing way, and the front side of the branch tectorial membrane 31 can be connected with the main body stent in a sealing way after being implanted into the main body stent.

As shown in fig. 2, in the present embodiment, the leakage preventing member 40 includes two leakage preventing sheets, each leakage preventing sheet is a leakage preventing coating 41, and each leakage preventing coating 41 is made of dacron, PTFE, PET or other high polymer materials; two pieces of the leakage preventing films 41 are respectively connected between the edges of the proximal cavity ports 32 of the branch films 31 and the inner surface of the main body film 22 in a sealing manner. That is, one leakage preventing film 41 is provided on each of the proximal end-opposite sides of the branch film 31, and each leakage preventing film 41 is connected between the branch film 31 and the main body film 22. Through the design of slice leak protection piece, its position that can be more nimble set up leak protection piece also can reduce the tectorial membrane use amount of blood vessel reposition of redundant personnel frame on the whole to reduce conveyer sheath pipe diameter. Meanwhile, the leakage-proof piece 40 is small in structure, and the smoothness of blood flow cannot be influenced in the releasing process.

Preferably, each of the leakage preventing films 41 is a triangular leakage preventing film, and each of the leakage preventing films 41 includes a first edge 411, a second edge 413 and a third edge 415 connected end to end; the first edge 411 of the leakage preventing membrane 41 is used for being connected with the branch coating film 31 in a sealing way, the second edge 413 of the leakage preventing membrane 41 is connected with the main body coating film 22 in a sealing way, and the third edge 415 of the leakage preventing membrane 41 is connected between the branch coating film 31 and the main body coating film 22. Preferably, the first edge 411 of each leakage-proof coating 41 is an arc-shaped edge corresponding to the outer surface of the branch coating 31, i.e., the center of the first edge 411 is located on the axial center of the branch coating 31; the second edge 413 is an arc-shaped edge corresponding to the inner surface of the main body coating film 22, namely, the center of the second edge 413 is located on the axial center line of the main body coating film 22; the third edge 415 may be a straight edge or an arc edge.

Preferably, the third edge 415 of each leakage-proof coating 41 is provided with an elastic first support 416, the first support 416 extends along the third edge 415, and two opposite ends of the first support 416 are respectively connected between the branch coating 31 and the main body coating 22; when the shunt stent 100 is deployed, the first support member 416 is used to support the leakage-proof covering 41 in an expanded state, so as to prevent the covering from collapsing and interfering with the implantation of the main stent. When the main stent is inserted into the main lumen 52, the first support 416 can be tightly attached to the outer surface of the main tube 20, so that the third edge 415 of each leakage-proof coating 41 is tightly attached to the outer surface of the main coating 31 to prevent internal leakage. Specifically, the first supporting member 416 is an elastic supporting rod disposed on the third edge 415 and extending along the length direction of the third edge 415.

In other embodiments, each of the leakage preventing coatings 41 is also provided with an elastic second support member on one of the first edge 411 and the second edge 413, the second support member being connected to the branch coating 31 or the main body coating 22; the third edge 415 is provided with an elastic first supporting member 416, and the second supporting member is connected with one end of the first supporting member 416 so as to support the anti-leakage coating 41 in an expanded state when the blood flow distribution frame 100 is unfolded. Preferably, the second support member is an elastic support rod.

In other embodiments, the first edge 411, the second edge 413, and the third edge 415 of each of the anti-leakage coating 41 are provided with elastic supporting members, that is, three of the supporting members extend along the length direction of the corresponding first edge 411, the second edge 413, and the third edge 415, the three supporting members are connected end to end, the supporting member on the first edge 411 is connected to the branch coating 31, the supporting member on the second edge 413 is connected to the main body coating 22, and the supporting member on the third edge 415 is connected between the branch coating 31 and the main body coating 22, so as to support the anti-leakage coating 41 in the expanded state when the shunt stent 100 is expanded. Preferably, each support is a resilient support bar.

In other embodiments, the leakage preventing films 41 may be sewn or flexibly fastened, for example, by being fixedly connected to the left and right sides of the branch films 31, and the rear sides of the branch films 31 are fixedly connected to the main body film 22, preferably by sewing, and the shape of the third side can be stabilized to some extent by sewing these two edges, or a loop of thread can be sewn on the third side to reinforce the supporting effect. This kind of mode can reduce sheath pipe diameter, and the holistic compliance of reposition of redundant personnel frame can be better simultaneously.

Referring to fig. 3, fig. 3 is another embodiment of a leakage-proof member of a blood vessel shunting frame 100 according to a first embodiment of the present invention. The leakage-proof piece 40a is a whole leakage-proof piece which is a leakage-proof coating film 42, a through hole 420 is arranged in the middle of the leakage-proof coating film 42, the edge of the through hole 420 of the leakage-proof coating film 42 is hermetically attached to the outer surface of the near end of the branch coating film 31, and the peripheral edge of the leakage-proof coating film 42 departing from the main cavity opening 52 is hermetically connected to the inner surface of the main body coating film 22. Preferably, the leakage-proof coating 42 is crescent-shaped and includes a first arc-shaped edge 421 facing the inner surface of the main body coating 22 and a second arc-shaped edge 423 facing away from the first arc-shaped edge 421, the first arc-shaped edge 421 of the leakage-proof coating 42 is used for being hermetically connected to the main body coating 22, and the second arc-shaped edge 423 is used for being hermetically attached to the outer surface of the main body stent inserted into the main lumen 52 of the main body tube 20.

Preferably, the first arc edge 421 and/or the second arc edge 423 of the leakage preventing member 40a are/is provided with an elastic supporting member, the supporting member on the first arc edge 421 is connected to the inner surface of the main body covering membrane 22, and the supporting member on the second arc edge 423 is tightly attached to the outer surface of the main body stent inserted into the main cavity 52 of the main body tube 20. Further, the support is a flexible support bar extending along the first arc edge 421 and/or the second arc edge 423.

Referring to fig. 4 to 6, fig. 4 is a schematic perspective view of a blood vessel shunting frame 100a according to a second embodiment of the present invention; fig. 5 is a perspective view of another perspective view of the shunt stand 100a in fig. 4; fig. 6 is an exploded perspective view of the shunt holder 100a and the leakage prevention member 40 of fig. 4. The utility model discloses the structure of the blood vessel reposition of redundant personnel frame 100a that the second embodiment provided is similar with the structure of first embodiment, and the difference lies in: in the second embodiment, two branch pipes 30 are axially inserted into the main body pipe 20, each branch pipe 30 comprises a tubular branch coating film 31, and the outer peripheral surfaces of the two branch coating films 31 are adjacent or tangent; the two branch tectorial membranes 31 are accommodated in the inner cavity of the main tectorial membrane 22, the first sealing membrane 50 is arranged between the far end of the main tectorial membrane 22 and the far ends of the two branch tectorial membranes 22, the first sealing membrane 50 is provided with two sub-cavity openings 54, the two sub-cavity openings 54 are adjacent or tangent, and the far end sub-cavity openings 34 of the two branch tectorial membranes 31 are respectively connected with the two sub-cavity openings 54 of the first sealing membrane 50 in a sealing way; the proximal ends of the two branch coating films 31 are respectively provided with a proximal terminal cavity opening 32, the two branch coating films 31 are provided with a leakage-proof piece 40 between the periphery of the proximal terminal cavity opening 32 and the inner surface of the main body coating film 22, and the leakage-proof piece 40 is used for preventing internal leakage at the proximal ends of the branch coating films 31.

In this embodiment, a leakage-proof member 40 is arranged between one side of the sub-cavity 32 of each branch coating film 31, which is away from the other branch coating film 31, and the inner surface of the main body coating film 22; specifically, the leakage preventing member 40 is a leakage preventing film 41, and the structure of the leakage preventing film 41 in this embodiment is the same as that of the leakage preventing film in the first embodiment, and is not described herein again.

As shown in fig. 7, fig. 7 shows another embodiment of the leakage preventing member 40b of the blood vessel branching frame 100a according to the second embodiment of the present invention. The leakage-proof member 40b is a one-piece leakage-proof sheet, the leakage-proof sheet is a leakage-proof coating 43, and the leakage-proof coating 43 is made of terylene cloth, PTFE, PET or other high polymer materials. Two adjacent or tangent through holes 430 are arranged in the middle of the leakage-proof coating 43, and the edges of the through holes 430 of the leakage-proof coating 43 are sealed and attached to the outer surface of the corresponding branch coating 31; preferably, the edge of the proximal lumen port 32 of each branch coating 31 is sealingly connected to the edge of the through-hole 31 of the corresponding leakage-proof coating 43; the outer peripheral edge of the leakage preventing film 43 facing away from the main orifice 52 is sealingly connected to the inner surface of the main body film 22. Preferably, the leakage preventing film 43 has a crescent shape, which includes a first arc-shaped edge 431 facing the inner surface of the main body film 22 and a second arc-shaped edge 433 facing away from the first arc-shaped edge 431, wherein the first arc-shaped edge 431 of the leakage preventing film 43 is used for being hermetically connected to the main body film 22, and the second arc-shaped edge 433 is used for being hermetically attached to the outer surface of the main body stent inserted in the main lumen 52 of the main body tube 20.

Preferably, the first arc-shaped edge 431 and/or the second arc-shaped edge 433 of the leakage preventing member 40b are/is provided with an elastic supporting member, the supporting member on the first arc-shaped edge 431 is connected to the inner surface of the main body covering membrane 22, and the supporting member on the second arc-shaped edge 433 is tightly attached to the outer surface of the main body bracket inserted into the main cavity 52 of the main body tube 20 to prevent internal leakage. Further, the support is a flexible support bar that extends along the first arcuate edge 431 and/or the second arcuate edge 433.

In other embodiments, three or more through holes are formed in the middle of the leakage-proof coating 43, three or more branch pipes 30 are accommodated in the inner cavity of the main body coating 22, three or more sub-cavity openings 54 are formed in the first sealing film 50, the edge of the distal sub-cavity 34 of each branch pipe 30 is connected to the edge of the sub-cavity 54 corresponding to the first sealing film 50 in a sealing manner, and the edge of the proximal sub-cavity 32 of each branch pipe 30 is connected to the edge of the through hole 430 corresponding to the leakage-proof coating 43 in a sealing manner.

Referring to fig. 8 and 9, fig. 8 is a schematic view of a three-dimensional structure of a blood vessel shunt stand according to a second embodiment of the present invention in a use state; fig. 9 is a sectional view taken along line IX-IX in fig. 8. When the shunt stand 100a is used, one end of the main body stent 800 is inserted into the main lumen 52 of the main body tube 20 from the distal end, the main body stent 800 expands the inner diameter of the main lumen 52 of the first sealing membrane 50, and the first sealing membrane 50 deforms to cause the edge of the main lumen 52 to cling to the outer surface of the main body stent 800; meanwhile, the main body stent 800 also expands the two leakage preventing members 40, and each leakage preventing member 40 deforms to enable the third edge 415 to cling to the outer surface of the main body stent 800; at this time, the distal and proximal ends of the sub-tube 30 are sealed by the first sealing film 50 and the leakage preventing member 40, respectively, to effectively prevent the inner leakage. And then a branch stent is inserted into the sub body tube inner cavity 33 of each sub body tube 30 of the blood vessel shunting frame 100a to form the blood vessel stent, namely, the blood vessel stent comprises the blood vessel shunting frame, a main body stent 800 and the branch stent, one end of the main body stent 800 passes through the main cavity opening 52 on the first sealing film 50 and is inserted into the main body tube 20 of the blood vessel shunting frame, the leakage-proof piece 40 and the first sealing film 50 are tightly attached to the outer surface of the main body stent 800, and one end of the branch stent passes through the upper sub cavity opening 54 of the first sealing film 50 and is inserted into the branch tube 30 of the blood vessel shunting frame. By arranging the leakage-proof piece 40 between the periphery of the proximal cavity opening 32 of the branch coating film 31 and the inner surface of the main body coating film 22, and the leakage-proof piece 40, the main body support 800 and the branch coating film 31 form a sealing structure at the proximal end of the blood shunt frame, on one hand, although the first sealing film 50 can play a certain sealing effect to prevent the occurrence of internal leakage of the blood shunt frame, on the other hand, the proximal blood continuously flows to the first sealing film 50, so that the first sealing film 50 exceeds the load limit, and the internal leakage still possibly occurs, and through the arrangement of the leakage-proof piece 40, the blood is blocked from the proximal end where the blood flows in, and forms a double sealing effect with the distal first sealing film 50, so that the occurrence of the internal leakage can be further reduced; on the other hand, the first sealing film 50 is provided at the distal end of the slit formed between the branch stent 31 and the main stent 800, and blood is prevented from entering the slit, and therefore, blood cannot flow and thrombus is easily formed.

Referring to fig. 10, fig. 10 is a schematic perspective view of a blood vessel shunting frame 100b according to a third embodiment of the present invention. The utility model discloses the structure of the blood vessel reposition of redundant personnel frame 100b that the third embodiment provided is similar with the structure of second embodiment, and the difference lies in: in the third embodiment, the waveform support rod 35 is fixed on the branch covering film 31 of each sub-body tube 30, and the waveform support rod 35 can increase the support strength of the sub-body tube 30, so as to prevent the connected branch stent from being pressed by the main stent to cause unsmooth blood flow and even blockage. The corrugated support rod 35 may be set according to the shape of the branched coating film 31. That is, one corrugated support rod 35 may be fixed to the branch coating 31, or a plurality of corrugated support rods 35 may be arranged at intervals along the axial direction of the branch coating 31, and these corrugated support rods 35 surround the daughter tube support skeleton of the branch coating 31. The wave-shaped support rod 35 may be ring-shaped or open-loop, and the structure, shape and material of the wave-shaped support rod 35 are similar to those of the ring-shaped wave-shaped support rod 242 on the main tube 20, and will not be described in detail herein.

In other embodiments, the branch covering film 31 may also be fixed with a braided mesh-like sub-tube supporting framework.

In other embodiments, the branch coating 31 may also be a semi-tubular structure, and the branch coating 31 of the semi-tubular structure is sewn on the inner surface of the main body coating 22 to form a semi-circular sub-tube together with the main body coating 22.

Referring to fig. 11 and 12, fig. 11 is a schematic perspective view of a blood vessel shunting frame 100c according to a fourth embodiment of the present invention; fig. 12 is a perspective view of one of the leakage prevention members 40c of the shunt stand 100c of fig. 11. The utility model discloses the structure of the blood vessel reposition of redundant personnel frame 100c that the fourth embodiment provided is similar with the structure of second embodiment, and the difference lies in: in the fourth embodiment, the leakage preventing members 40c are leakage preventing frames 45 provided on opposite sides of the branch cover film 31, and the two leakage preventing frames 45 are used to seal the gap between the proximal end of the branch cover film 31 and the main body cover film 22. Specifically, a leakage preventing frame 45 is arranged between one side of one branch covering film 31 far away from the other branch covering film 31 and the inner surface of the main body covering film 22, the far end face of the leakage preventing frame 45 is connected to the first sealing film 50, and the near end face of the leakage preventing frame 45 is adjacent to the near end face of the branch covering film 31; preferably, the proximal face edge of the leak proof frame 45 is sealingly connected with the periphery of the proximal cavity port 32 of the corresponding branch lamination film 31.

Each of the leakage-proof frames 45 includes a distal end surface 451 attached to the first sealing film 50, a proximal end surface 452 attached to the distal end surface 451, a first attachment surface 454 attached to the branch covering film 31, a second attachment surface 455 attached to the main body covering film 22, and a sealing surface 456 connected between the distal end surface 451, the proximal end surface 452, the first attachment surface 454 and the second attachment surface 455, at least the proximal end surface 452 is provided with a second sealing film 457, and the sealing surface 456 is provided with a third sealing covering film 458, so that the sealing effect of the assembled stent-stent and main body stent can be further improved, the risk of internal leakage caused by imperfect sealing after the main body stent and the stent-stent are released can be prevented, and the structure of the leakage-proof frame 45 is more stable as a whole design.

When each leakage preventing frame 45 is connected between the corresponding branch cover film 31 and the main body cover film 22, the second sealing film 457 on the proximal end portion 452 is sealingly connected between the proximal ends of the branch cover film 31, the main body cover film 22 and the third sealing film 458 on the sealing surface 456; the distal end of the third sealing membrane 458 on the sealing surface 456 is sealingly attached to the first sealing membrane 50, and the opposite side edges of the third sealing membrane 458 are sealingly attached to the branch cover membrane 31 and the main cover membrane 22. At this time, the distal end surface 451 shares a coating with the first sealing film 50, the first bonding surface 454 shares a coating with the branch coating 31, and the second bonding surface 455 shares a coating with the main body coating 22; the usage rate of the whole covering film of the blood vessel shunting frame can be reduced by sharing the covering film on the connected surface of the blood vessel shunting frame, thereby reducing the diameter of a sheath tube of a conveyor. The second sealing film 457, the third sealing film 458, the branch coating film 31, and the main coating film 22 enclose a sealed frame, and the branch coating film 31 and the main coating film 22 are sealed by the leakage-proof frame 45 to prevent internal leakage.

In other embodiments, the second sealing membrane 457 on the proximal end surface 452 and the third sealing membrane 458 on the sealing surface 456 are integrally formed, and the integral structure of the leakage-proof frame 45 is more stable and better in supporting performance, so that the integral form can be stably maintained even without a support, and no other connecting structure exists between the second sealing membrane 457 and the third sealing membrane 458, so that the risk of internal leakage is avoided.

In other embodiments, the edge of the third sealing membrane 458 on the sealing surface 456 is provided with an elastic support ring for spreading the leakage prevention frame 45; the support ring is connected around the first sealing film 50, the branch films 31, the main body film 22, and the second sealing film 457 on the proximal end surface 452.

In other embodiments, the distal end surface 451, the proximal end surface 452, the first abutting surface 454, the second abutting surface 455, and the sealing surface 456 of the leak-proof frame 45 may be provided with a sealing film; further, these sealing films may be an integral structure, and the design of this integral structure makes the overall structure of the leakage-proof frame 45 more stable and better in supporting performance, even without a support, the overall shape thereof can be stably maintained, and there is no other connecting structure between the second sealing film 457 and the third sealing film 458, so that the risk of internal leakage is avoided.

Referring to fig. 13 and 14, fig. 13 is a schematic perspective view of a blood vessel shunting frame 100c according to a fourth embodiment of the present invention in a use state; fig. 14 is a sectional view taken along the line XIV-XIV in fig. 13. When the shunt stand 100c is used, one end of the main body stent 800 is inserted into the main lumen 52 of the main body tube 20 from the distal end, the main body stent 800 expands the inner diameter of the main lumen 52 of the first sealing membrane 50, and the first sealing membrane 50 deforms to cause the edge of the main lumen 52 to be closely attached to the outer surface of the main body stent 800; meanwhile, the main body frame 800 also expands the leakage preventing frames 45 of the two leakage preventing members 40c, and each leakage preventing member 40c deforms to enable the third sealing film 458 on the second abutting surface 455 to abut against the outer surface of the main body frame 800; at this time, the distal end and the proximal end of the sub-tube 30 are sealed by the first sealing film 50 and the leakage preventing frame 45, respectively, so that the inner leakage can be effectively prevented. And then the branch stent is inserted into the sub-body tube inner cavity 33 of each sub-body tube 30 of the blood vessel shunt stent 100c to form the blood vessel stent.

Referring to fig. 15, fig. 15 is a schematic perspective view of a blood vessel shunting frame 100d according to a fifth embodiment of the present invention. The utility model discloses the structure of the blood vessel reposition of redundant personnel frame 100d that the fifth embodiment provided is similar with the structure of fourth embodiment, and the difference lies in: in the fifth embodiment, the waveform support rod 35 is fixed on the branch covering film 31 of each sub-body tube 30, and the waveform support rod 35 can increase the support strength of the sub-body tube 30, thereby preventing the accessed branch stent from being pressed by the main stent to cause unsmooth blood flow and even blockage. The branch coating 31 may be fixed with a wave-shaped support rod 35, or a plurality of wave-shaped support rods 35 are arranged on the branch coating 31 at intervals along the axial direction thereof, and these wave-shaped support rods 35 surround the daughter tube support framework of the branch coating 31. By arranging the leakage-proof piece 40 between the periphery of the branch coating 31 near the terminal cavity opening and the inner surface of the main body coating 22, and the leakage-proof piece 40, the main body support 800 and the branch coating 31 form a sealing structure at the proximal end of the blood vessel shunt support, on one hand, although the first sealing membrane 50 can play a certain sealing effect to prevent the occurrence of the internal leakage of the blood vessel support, on the other hand, the blood at the proximal end continuously flows to the first sealing membrane 50, so that the first sealing membrane 50 exceeds the load limit, the internal leakage still possibly occurs, and through the arrangement of the leakage-proof piece 40, the blood is blocked from the proximal end where the blood flows in, and the double sealing effect is formed with the first sealing membrane 50 at the distal end, so that the occurrence of the internal; on the other hand, the first sealing film 50 is provided at the distal end of the slit formed between the branch stent 31 and the main stent 800, and blood is prevented from entering the slit, and therefore, blood cannot flow and thrombus is easily formed.

Referring to fig. 16 and 17, fig. 16 is a schematic perspective view of a blood vessel shunting frame 100e according to a sixth embodiment of the present invention; fig. 17 is a perspective view of one of the leakage prevention members 40d of the shunt stand 100e of fig. 16. The utility model discloses the structure of the blood vessel reposition of redundant personnel frame 100e that the sixth embodiment provided is similar with the structure of fourth embodiment, and the difference lies in: in the sixth embodiment, the inner cavity of each leakage-proof frame 40d is filled with an expandable material, or the inner cavity of each leakage-proof frame 40d is provided with a villus structure, so that the formation of thrombus can be accelerated, and the sealing effect can be improved.

Referring to fig. 18, fig. 18 is a schematic perspective view of a blood vessel shunting frame 100f according to a seventh embodiment of the present invention. The utility model discloses the structure of the blood vessel reposition of redundant personnel frame 100f that the seventh embodiment provided is similar with the structure of fourth embodiment, and the difference lies in: the mouth 54 of the primary sealing membrane 50 is lower than the distal face of the primary port 52 so that the primary sealing membrane 50 is recessed towards the edges of the mouth 54 and the primary sealing membrane 50 forms a flare with the side wall of the main tube 20.

Preferably, the distal end of the branch lamination film 31 is provided with a distal sub-port 34 sealingly connected around the sub-port 54 of the first sealing film 50, the plane enclosed by the distal sub-port 34 being inclined proximally with respect to the radial direction of the main tube 20. That is, the first sealing membrane 50 is a bevel connecting the main port 52, the sub-port 54, the main body cover membrane 22, and the branch cover membrane 31, and the bevel forms an angle of 5-80 degrees, preferably 15-60 degrees, with the central axis of the main body tube 20.

Referring to fig. 19, fig. 19 is a schematic perspective view of a blood vessel shunting frame 100g according to an eighth embodiment of the present invention. The utility model discloses the structure of the blood vessel reposition of redundant personnel frame 100g that the eighth embodiment provided is similar with the structure of second embodiment, and the difference lies in: the edge of the main cavity opening 52 of the first sealing membrane 50 is provided with a fixed shaping piece which is fixed on the first sealing membrane 50 at the edge of the side wall of the main cavity opening 52 far away from the main body pipe 20; the first sealing film 50 is provided with a support ring 56 at the edge of each sub-cavity opening 54, and the support ring 56 is used for opening the sub-cavity opening 54.

Specifically, the positioning member is a positioning rod 70 fixed to the first sealing film 50 on the side of the main cavity 52 away from the side wall of the main tube 20, the positioning rod 70 has elasticity, and the positioning rod 70 is used for positioning the first sealing film 50, namely, fixing the direction of the first sealing film 50, and increasing the supporting force of the opening edge of the sealing film. The positioning rod 70 is made of memory alloy wire, preferably nitinol wire.

The positioning rod 70 extends toward the center of the main tube 20 along the edge of the main sealing film 50 on the side where the main opening 52 is connected to the side wall of the main tube 20, and opposite ends of the positioning rod 70 are connected to the side walls of the main tube 20. Therefore, when the main stent is inserted into the main cavity 52 of the main tube 20, the positioning rod 70 can be tightly attached to the outer surface of the main stent, so that the first sealing film 50 is tightly attached to the outer surface of the main stent to prevent internal leakage, and the main stent is also conveniently inserted into the main cavity 52 of the main tube 20, thereby increasing the compatibility between the main stent and the blood vessel shunt stent and enabling the main stent and the blood vessel shunt stent to be more stably connected.

In this embodiment, the positioning rod 70 has a wave-shaped structure formed by connecting three arc rods, the positioning rod 70 includes a first arc rod 72 located in the middle, and two second arc rods 74 connected to two opposite ends of the first arc rod 72, and the two second arc rods 74 have the same structure and are symmetrical along the midpoint of the first arc rod 72. The two sections of the second arc rods 74 are smoothly connected with the first arc rod 72, the first arc rod 72 and the two sections of the second arc rods 74 are of an integrated structure, and the positioning rod 70 is formed by bending a memory alloy wire.

In other embodiments, the first arc rod 72 and the two second arc rods 74 may be of a split structure, that is, the first arc rod 72 and the two second arc rods 74 are connected together by mechanical pressing or welding.

As shown in fig. 19, the middle portion of the first arc rod 72 is curved toward the main cavity opening 52, and the middle portion of each second arc rod 74 is curved toward the side away from the main cavity opening 52. The diameter of the positioning rod 70 is 0.10-0.40mm, and in the embodiment, the diameter of the positioning rod 70 is 0.20-0.30 mm. The positioning rod 70 may be fixed to the first sealing film 50 by sewing or heat pressing, and in this embodiment, the positioning rod 70 is fixed to an edge of the first sealing film 50 by sewing.

Referring to fig. 20, fig. 20 is a schematic perspective view of a blood vessel shunting frame 100h according to a ninth embodiment of the present invention. The utility model discloses the structure of the blood vessel reposition of redundant personnel frame 100h that the ninth embodiment provided is similar with the structure of eighth embodiment, and the difference lies in: at least one support 60 is arranged on the first sealing film 50, and the at least one support 60 is connected between the fixed part 70 and the supporting ring 56. At least one support 60 is a support bar fixed to the first sealing film 50, and one end of the support bar is connected to the stationary member 70, and the other end of the support bar 60 is connected to the support ring 56. The supporting rod 60 is made of nickel-titanium wires, the wire diameter is 0.10-0.40mm, and preferably, the wire diameter is 0.20-0.30 mm.

In this embodiment, the first sealing film 50 is provided with two tangential sub-cavity openings 54, two sub-body tubes 30 are disposed in the main body tube inner cavity 25 of the main body tube 20, and the distal ends of the two sub-body tubes 30 are respectively communicated with the two sub-cavity openings 54. The two sub-cavity openings 54 are located on the side far away from the main cavity opening 52, and the outer side surfaces of the two sub-body tubes 30 are attached to the inner wall of the main tube inner cavity 25. The support rod 60 is fixed on the first sealing film 50 and is connected between the positioning rod 70 and the tangent point of the two sub-cavities 54. The first sealing film 50 is recessed towards the edges of the two sub-cavities 54, i.e. the first sealing film 50 is inclined towards both of said sub-cavities 54. Preferably, one end of the support rod 60 is fixed to the first arc rod 72 of the positioning rod 70, preferably to the midpoint of the first arc rod 72, and the other end of the support rod 60 is fixed between the tangent points of the sub-cavity opening 54.

Referring to fig. 21, fig. 21 is a schematic perspective view of a blood vessel shunting frame 100i according to a tenth embodiment of the present invention. The utility model discloses the structure of blood vessel reposition of redundant personnel frame 100i that the tenth embodiment provided is similar with the structure of ninth embodiment, and the difference lies in: two support rods 60 are fixed on the first sealing film 50 at intervals, and the two support rods 60 are respectively connected between the edges of the two sub-cavity openings 54 and the positioning rods 70. 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 sub-cavity 54.

In this embodiment, the two support rods 60 are in the shape of an inverted 'splayed'.

In other embodiments, two support rods 60 may be fixed to the first sealing film 50 in parallel, and each support rod 60 is connected between the edge of the corresponding sub-cavity 54 and the positioning rod 70.

Referring to fig. 22, fig. 22 is a schematic perspective view of a blood vessel shunting frame 100j according to an eleventh embodiment of the present invention. The utility model discloses the structure of blood vessel reposition of redundant personnel frame 100j that the eleventh embodiment provided is similar with the structure of tenth embodiment, and the difference lies in: the eleventh embodiment is added with one supporting rod 60 on the basis of the tenth embodiment, that is, three supporting rods 60 are fixed on the first sealing film 50, the three supporting rods 60 are arranged at intervals, the supporting rod 60 in the middle is connected between the tangent point of the two sub-cavity openings 54 and the first arc rod 72 of the positioning rod 70, and the two supporting rods 60 at the two sides are respectively connected between the edges of the two sub-cavity openings 54 and the two second arc rods 74 of the positioning rod 70. Support jointly through three spinal branch vaulting poles 60 and locating lever 70 first seal membrane 50 enables first seal membrane 50 more stable, more can not fold and interfere or block sub-chamber 54 or main chamber 52, makes the blood flow in main part pipe 20 and the daughter pipe 30 more smooth and easy, and the branch vascular support of conveniently pegging graft.

In other embodiments, four or more support rods 60 may be fixed to the first sealing film 50, wherein a portion of the support rods 60 is connected between the edge of one of the sub-cavity openings 54 and the positioning rod 70, and another portion of the support rods 60 is connected between the edge of the other sub-cavity opening 54 and the positioning rod 70.

Referring to fig. 23, fig. 23 is a schematic perspective view of a blood vessel shunting frame 100k according to a twelfth embodiment of the present invention. The utility model discloses the structure of the blood vessel reposition of redundant personnel frame 100k that the twelfth embodiment provided is similar with the structure of tenth embodiment, and the difference lies in: the structure of the supporting rod 60a in the twelfth embodiment is different from the structure of the supporting rod 60 in the tenth embodiment, as shown in fig. 23, the supporting rod 60a includes a first rod 64 and a second rod 65 obliquely connected to one end of the first rod 64, and an included angle between the first rod 64 and the second rod 65 is in a range of 24 to 130 degrees. The first rod 64 of each support rod 60a is fixed on the first sealing film 50, and the second rod 65 is fixed on the sidewall of the corresponding sub-tube 30, i.e. the second rod 65 is fixed on the branch film 31 of the corresponding sub-tube 30, and the intersection of the first rod 64 and the second rod 65 is located at the intersection of the first sealing film 50 and the sidewall of the corresponding sub-tube 30. The first rod 64 is inclined at the same angle as the first seal film 50, and the second rod 65 extends in the axial direction of the corresponding branch coating film 31. One end of each first rod 64 away from the corresponding second rod 65 is fixed to the positioning rod 70. Preferably, an 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 64 and the second rod 65 are integrated, and the angle between the first rod 64 and the second rod 65 is formed by hot pressing, bending and shaping. The first rod 64 and the second rod 65 are fixed to the first sealing film 50 and the branch coating film 31 by sewing.

In the embodiment, the first rod 64 of the support rod 60a is fixed on the first sealing film 50, the end of the first rod 64 far away from the second rod 65 is fixed on the positioning rod 70, and the support rod 60a and the positioning rod 70 have a supporting effect on the first sealing film 50; the second rod 65 is fixed on the branch coating film 31, and can not only support the first sealing film 50, but also position the corresponding branch coating film 31, and can enhance the radial supporting force of the body tube 30, so that the first sealing film 50 and the side wall of the body tube 20 are enclosed into a stable horn-shaped structure, thereby the blood in the body tube 20 and the sub-body tube 30 flows more smoothly, and the branch vascular stent is conveniently inserted into the main cavity 52 and the sub-cavity 54.

In other embodiments, only one support bar 60a may be provided for the first sealing film 50. The first rod 64 of the support rod 60a is fixed on the first sealing film 50, and the end of the first rod 64 far away from the second rod 65 is fixed on the positioning rod 70, and the second rod 65 is fixed at the tangent of the two sub-tubes 30.

In other embodiments, only one support rod 60a may be disposed on the first sealing film 50, only one sub-cavity 54 is formed in the first sealing film 50, the first rod 64 of the support rod 60a is fixed to the first sealing film 50, the second rod 65 is fixed to the branch coating 31 of the sub-cavity 54, the intersection of the first rod 64 and the second rod 65 is located at the intersection of the first sealing film 50 and the branch coating 31, and one end of the first rod 64, which is far away from the second rod 65, is connected to the positioning rod 70.

Referring to fig. 24, fig. 24 is a schematic perspective view of a blood vessel shunting frame 100n according to a thirteenth embodiment of the present invention. The utility model discloses the structure of the blood vessel reposition of redundant personnel frame 100n that the thirteenth embodiment provided is similar with the structure of eighth embodiment, and the difference lies in: in the thirteenth embodiment, the sub-body tube 30 is provided with a developing structure 80 at the edge of the sub-cavity 54, and the developing structure 80 is a developing wire continuously or intermittently wound on the supporting ring 56. Alternatively, the support ring 56 may be made of an alloy doped with a contrast material, such as nitinol wire formed from tantalum-containing nitinol wire having a diameter of 0.10-0.40 mm.

In this embodiment, the support ring 56 is a metal ring made of a memory alloy, such as a nitinol ring structure, which is adapted to the shape of the edge of the sub-cavity opening 54, and the visualization structure 80 is a visualization wire wound continuously or intermittently around the metal ring. Because the annular developing structure 80 has developing property and is an annular structure, the position of the annular developing structure 80 can be clearly observed through an imaging device in the operation process, namely, the annular developing structure 80 is surrounded by the edge of the sub-cavity opening 54 instead of scattered developing points, so that the branch vascular stent can be inserted into the sub-cavity opening 54 more conveniently and quickly. The developer material includes, but is not limited to, gold, platinum-tungsten, palladium, platinum-iridium, rhodium, tantalum, or alloys or composites of these metals.

In other embodiments, at least one circumference of the developer material may be inlaid or adhered to the outer surface of the support ring 56, such as a developer wire inlaid on the support ring 56, or at least one circumference of the developer wire 84 adhered on the outer surface of the support ring 56. Preferably, the support ring 56 is wrapped with tantalum wire.

In other embodiments, the developing structure 80 is a developing point continuously or intermittently fixed on the edge of the sub-cavity 54 on the first sealing film 50, and the developing point is fixed on the supporting ring 56 or sewed on the first sealing film 50 on which the supporting ring 56 is located by sewing, punching, hot pressing, embedding or attaching.

In other embodiments, the edge of the main cavity 52 is also provided with a ring-like development structure which is a development spot continuously or intermittently fixed on the first sealing film 50 at the edge of the main cavity 52.

In other embodiments, the positioning rod 70 may be made of a memory alloy wire containing a visualization material to facilitate insertion of the branch vessel stent within the main lumen 52.

In other embodiments, the positioning rod 70 may have a developer wire continuously or intermittently wound thereon.

In other embodiments, the positioning rod 70 is embedded or attached with a developing structure. If a developing wire is embedded in the positioning rod 70.

Referring to fig. 25, fig. 25 is a schematic perspective view of a blood vessel shunting frame 100m according to a fourteenth embodiment of the present invention. The utility model discloses the structure of the blood vessel reposition of redundant personnel frame 100m that the fourteenth embodiment provided is similar with the structure of ninth embodiment, and the difference lies in: in the fourteenth embodiment, each sub-tube 30 is provided with a developing structure 80 at the edge of the sub-cavity 54, and the developing structure 80 is a developing wire continuously or intermittently wound on the supporting ring 56. Alternatively, the support ring 56 may be made of an alloy doped with a contrast material, such as nitinol wire formed from tantalum-containing nitinol wire.

In other embodiments, the daughter tube 30 of the shunt is provided with a visualization structure at the edge of the sub-port 54 and/or the edge of the main port 52 of the first sealing membrane 50 is provided with a visualization structure.

The above is an implementation manner of the embodiments of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principles of the embodiments of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims (19)

1. A blood vessel shunt frame comprises a main body tube and at least one branch tube axially inserted into an inner cavity of the main body tube, and is characterized in that the main body tube comprises a tubular main body covering film, at least one branch tube comprises a tubular branch covering film, the branch covering film is accommodated in the inner cavity of the main body covering film, a first sealing film is arranged between the far end of the main body covering film and the far end of the branch covering film so as to divide the inner cavity of the main body covering film into a main cavity opening and at least one sub-cavity opening, a near terminal cavity opening is arranged at the near end of the branch covering film, and a leakage-proof piece is arranged at least between the periphery of the near terminal cavity opening of the branch covering film and the inner surface of the main body covering film.

2. The shunt holder according to claim 1, wherein the leakage preventing member is a leakage preventing piece connected to the periphery of the proximal terminal lumen, the leakage preventing piece being used to seal a gap between the main body covering membrane and the branch covering membrane.

3. The shunt holder according to claim 2, wherein a piece of the leakage-proof coating is respectively disposed on two opposite sides of the proximal end of the branch coating, and each leakage-proof coating is connected between the branch coating and the main body coating.

4. The shunt holder of claim 3, wherein each of the plurality of anti-leakage membranes is a triangular anti-leakage membrane, a first edge of the anti-leakage membrane is sealingly connected to the branch membranes, a second edge of the anti-leakage membrane is sealingly connected to the main body membrane, and a third edge of the anti-leakage membrane is connected between the branch membranes and the main body membrane.

5. The vessel shunt stent of claim 4, wherein a third edge of each of the leak-proof membranes is provided with an elastic first support member, the first support member extends along the third edge, and opposite ends of the first support member are respectively connected between the branch membranes and the main body membrane.

6. The vessel shunt stand of claim 1, wherein said leakage preventing members are leakage preventing frames disposed on opposite sides of said branch covering film, and said two leakage preventing frames are used for sealing a gap between said branch covering film and said main covering film.

7. The vessel shunt holder of claim 6, wherein each leak-proof frame comprises a distal end face attached to the first sealing membrane, a proximal end face facing away from the distal end face, a first attachment face attached to the branch covering membrane, a second attachment face attached to the main body covering membrane, and a sealing face connected between the distal end face, the proximal end face, the first attachment face, and the second attachment face, at least the proximal end face is provided with the second sealing membrane and the sealing face is provided with the third sealing covering membrane.

8. The shunt stent of claim 7, wherein the second sealing membrane on the proximal face is sealingly connected between the proximal ends of the branch membranes, the main body membrane, and the third sealing membrane on the sealing face.

9. The shunt stent of claim 8, wherein the distal end surface shares a membrane with the first sealing membrane, the first abutment surface shares a membrane with the branch membrane, the second abutment surface shares a membrane with the body membrane, and a third sealing membrane on the sealing surface is connected between the first sealing membrane, the second sealing membrane on the proximal end surface, the branch membrane, and the body membrane.

10. The shunt holder of claim 9, wherein the second sealing membrane on said proximal surface is a unitary structure with the third sealing membrane on said sealing surface.

11. The shunt rack of claim 6, wherein the inner cavity of each of the leak-proof frames is filled with an expandable material or is provided with a villus structure.

12. The shunt holder of claim 1, wherein the sub-port of the first sealing membrane is lower than the distal surface of the main port such that the first sealing membrane is recessed toward the edge of the sub-port, the first sealing membrane forming a flare with the sidewall of the main tube.

13. The shunt stent of claim 12, wherein the distal end of the branch covering membrane is provided with a distal sub-lumen opening which is connected around the sub-lumen opening in a sealing manner, and the plane enclosed by the distal sub-lumen opening is inclined towards the proximal end relative to the radial direction of the main tube.

14. The shunt holder according to any one of claims 1 to 13, wherein the edge of the main lumen is provided with a shape-fixing member, and the shape-fixing member is fixed on the sealing membrane at the edge of the main lumen on the side far from the side wall of the main tube.

15. The shunt holder according to claim 14, wherein the positioning member is a positioning rod extending from the edge of the side wall of the main tube connected to the main port of the first sealing membrane to the center of the main tube, and opposite ends of the positioning rod are connected to the side wall of the main tube respectively.

16. The shunt holder of claim 15, wherein said first sealing membrane is provided with a support ring at the edge of said sub-cavity opening.

17. The shunt holder according to claim 16, wherein at least one support member is disposed on the first sealing membrane, at least one support member is connected between the shape-fixing member and the support ring, at least one support member is a support rod fixed on the first sealing membrane, one end of the support rod is connected to the shape-fixing member, and the other end of the support rod is connected to the support ring.

18. The shunt holder according to claim 1, wherein the edge of the main orifice and/or the at least one sub-orifice is provided with a visualization structure.

19. A vascular stent comprising a main stent body, wherein the vascular stent further comprises the vascular shunt stent as claimed in any one of claims 1 to 18, one end of the main stent body passes through a main cavity on the first sealing film and is inserted into a main tube of the vascular shunt stent, and the leak-proof piece is tightly attached to the outer surface of the main stent body.

Images