CN118415789B

CN118415789B - Suture-free vascular inversion device

Info

Publication number: CN118415789B
Application number: CN202410896119.5A
Authority: CN
Inventors: 申宝胜; 常新洋; 刘颖
Original assignee: Beijing Huamai Taike Medical Instrument Co ltd
Current assignee: Beijing Huamai Taike Medical Instrument Co ltd
Priority date: 2024-07-05
Filing date: 2024-07-05
Publication date: 2024-08-30
Anticipated expiration: 2044-07-05
Also published as: CN118415789A

Abstract

The invention provides a suture-free vascular shunt device, which relates to the field of medical appliances and comprises a shunt tube and a fixing wire; the two ends of the current converting pipe are respectively of multi-petal structures; the part of each valve close to the valve tip is respectively provided with a fixing hole; peripheral sealing structures are respectively arranged on the outer walls of the two ends of the transfer pipe; the side wall of the middle part of the diverting pipe is provided with a perforation, and a sealing valve with a sealing hole is connected in the perforation in a sealing way; under the constraint state, the fixing wire penetrates into the transfer tube from the sealing hole, one part of the fixing wire extends towards one end of the transfer tube, and the other part extends towards the other end of the transfer tube, so that the fixing holes respectively penetrating into the valve at the two ends of the transfer tube collect the valve at the corresponding end into a cone-shaped structure with the valve tips gathered; in the released state, the fixing wire is pulled out of the diversion pipe, and the multi-petal structure is sprung outwards in the radial direction. The invention relieves the technical problem that the blocking of blood flow in the blood vessel to be diverted is always required to be kept in the suturing process of the incision of the artificial blood vessel and the blood vessel to be diverted in the existing vascular diversion operation, and the staged injury to a patient is caused.

Description

Suture-free vascular inversion device

Technical Field

The invention relates to the technical field of medical appliances, in particular to a suture-free vascular inversion device.

Background

Referring to fig. 1, a vascular bypass graft is generally referred to as an artificial vascular bypass graft, which is mainly used for improving vascular occlusion or embolism symptoms, and after a serious occlusion symptom occurs in a blood vessel, a blood flow channel is reestablished through the artificial blood vessel beside the blocked blood vessel, and blood supply is restored by reopening the blood vessel.

In the prior art, the vascular inversion operation needs to block the blood supply of the vascular to be inverted, cut the vascular to be inverted, and stitch the two ends of the artificial blood vessel with the cut of the vascular to be inverted respectively so as to restore the blood supply.

In the suturing process of the artificial blood vessel and the incision of the blood vessel to be shunted, the blocking of blood flow in the blood vessel to be shunted needs to be always kept, and the suturing technique and speed of a doctor have direct influence on the time of blocking the blood flow of the blood vessel to be shunted.

Disclosure of Invention

The invention aims to provide a suture-free vascular inversion device so as to alleviate the technical problems in the prior art.

In order to achieve the above purpose, the embodiment of the present invention adopts the following technical scheme:

The embodiment of the invention provides a suture-free vascular shunt device, which comprises a shunt tube and a fixing wire;

the two ends of the transfer tube are respectively of a multi-petal structure; fixing holes are respectively arranged at the positions, close to the valve tips, of each valve of the multi-valve structure; the peripheral sealing structures are respectively arranged at the positions, close to the valve roots, on the outer walls of the two ends of the current transfer pipe;

A perforation is arranged on the side wall of the middle part of the current converting pipe, a sealing valve is connected in the perforation in a sealing way, and a sealing hole which allows the fixing wire to pass through and is automatically closed after the fixing wire is separated is arranged on the sealing valve;

In the binding state, the fixing wire penetrates into the transfer tube from the sealing hole, one part of the fixing wire extends towards one end of the transfer tube, the other part extends towards the other end of the transfer tube, the valves at the corresponding ends are converged into a cone-shaped structure by fixing holes respectively penetrating through the valves at the two ends of the current transfer pipe;

And in a release state, the fixing wire is pulled out of the diversion pipe from the sealing hole, and each petal of the multi-petal structure radially outwards bounces along the diversion pipe.

In this embodiment, optionally and preferably, the fixing wire includes a first wire, a second wire, and a pull ring;

The pull ring is arranged outside the current converting pipe;

the first wire and the second wire penetrate through the inside of the transfer pipe and extend from the sealing valve towards two ends of the transfer pipe respectively; the first wire and the second wire are gathered together at one end, close to the sealing valve, of each wire and are connected to the pull ring after passing through the sealing hole of the sealing valve.

Optionally and preferably, in the constrained state, a side surface of each petal of the multi-petal structure facing the inside of the flow transfer tube is an inner side surface, and then: the parts of each valve of the multi-valve structure, which are close to the valve tips, are respectively provided with an extension part, and the fixing holes are formed in the extension parts; under the constraint state, the extension parts of each valve of the multi-valve structure are overlapped along the axial direction of the current transfer pipe, and the fixing wires sequentially penetrate through the fixing holes of each valve along the axial direction to extend to the central positions where the valve tips of each valve are gathered mutually and expose the multi-valve structure.

Further preferably, the part of the fixing wire exposed out of the multi-petal structure is provided with a tip.

Optionally and preferably, the stiffness of the ends of the transfer tube is greater than the stiffness of the middle tube section of the transfer tube.

Furthermore, in this embodiment, optionally and preferably, the circumferential sealing structure includes a seal ring and an end compression structure; the end pressing structure comprises a pressing ring and a pressing piece; with the front end of the pressing ring and the end of the pressing piece, which face the end of the transfer pipe, respectively, and the rear end of the pressing ring and the end of the pressing piece, respectively, then: the sealing ring is fixed on the front end face of the pressing ring; the pressurizing piece is arranged at the rear side of the pressing ring, the pressurizing piece is an elastic piece which is prefabricated into a frustum shape, the front end diameter of the elastic piece is smaller than the rear end diameter, the small-diameter end of the elastic piece is fixedly connected to the outer wall of the transfer pipe, the small-diameter end of the elastic piece is inserted into the pressing ring from the rear end of the pressing ring, and the large-diameter end of the elastic piece is a free end. In the binding state, the pressurizing piece is bound into a cylinder by the binding piece; in the released state, the binding piece is released, and the pressing piece is converted to a prefabricated frustum shape so as to press the pressing ring in the front end direction.

Further preferably, the inner cavity of the pressing ring comprises a cylindrical section and a conical section which is connected to the rear end of the cylindrical section and gradually increases in inner diameter from front to back; and the taper of the pressure piece after release is larger than that of the conical section in the pressing ring.

Optionally and preferably, the pressing member is a metal net drum structure.

Optionally and preferably, an anchoring thorn is arranged on the front end face of the pressing ring.

Alternatively and more preferably, the tie down employs tie down wires or a compressed film sleeve with release wires.

The suture-free vascular inversion device provided by the embodiment at least has the following beneficial effects:

When the suture-free vascular flow diversion device is in the constraint state, the tip of the conical structure at one end of the flow diversion pipe is aligned with and pierces one blood vessel to be diverted, the tip of the conical structure at the other end of the flow diversion pipe is aligned with and pierces the other blood vessel to be diverted, then the sealing hole of the fixing wire self-sealing piece is pulled out of the flow diversion pipe, each valve of the multi-valve structure at the two ends of the flow diversion pipe is radially outwards sprung and fixed on the inner wall of the blood vessel to be diverted along the flow diversion pipe, and the circumferential sealing structure is abutted to the outer side surface of the outer wall of the blood vessel to be diverted so as to seal the gap between the root parts of the adjacent valve blades of the multi-valve structure and prevent blood leakage before endothelialization of cells at the blood vessel puncture points. Thus, the vascular inversion operation between two blood vessels to be inverted is completed rapidly.

The above operation process is suture-free vascular inversion, the operation process does not need to cut the vascular to be inverted to suture the two ends of the artificial blood vessel with the cuts of the vascular to be inverted respectively, and also does not need to block the blood flow in the vascular to be inverted, so that the influence of blocking the blood supply on the health of a patient can be avoided, and the operation is simple and the efficiency is high.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of a prior art vascular bypass procedure for a branch vessel of the aortic arch;

Fig. 2 is a schematic diagram of the overall structure of the suture-free vascular flow device according to the embodiment of the present invention in a constrained state;

FIG. 3 is a schematic view of a portion of the suture-free vascular flow device of FIG. 2 near an end region;

FIG. 4 is a schematic illustration of an end multi-lobal configuration of the suture-free vascular flow device of FIG. 2;

FIG. 5 is a partial cross-sectional view of the suture-free vascular flow device of FIG. 2;

FIG. 6 is a schematic view of the end multi-lobe configuration of FIG. 5;

FIG. 7 is a schematic illustration of a single lobe of the multi-lobe structure of FIG. 6;

FIG. 8 is a schematic view of a sealing valve structure of the suture-free vascular flow device of FIG. 5;

FIG. 9 is an isometric view of a combination seal ring and clamp ring in the circumferential seal configuration of the suture-free vascular flow device of FIG. 2;

FIG. 10 is a cross-sectional view of the structure of FIG. 9 at another angle;

FIG. 11 is a schematic view showing a binding state of the pressurizing member assembled to the transfer tube in the circumferential sealing structure of the suture-free vascular transfer device shown in FIG. 2;

FIG. 12 is a schematic view showing a release state of the pressurizing member assembled to the transfer tube in the circumferential sealing structure of the suture-free vascular transfer device shown in FIG. 2;

fig. 13 is a schematic view of an end structure of a suture-free vascular flow device according to an embodiment of the present invention in a released state;

fig. 14 is a schematic diagram of an end structure of a suture-free vascular inversion device according to an embodiment of the present invention fully released in a blood vessel to be inverted;

Fig. 15 is a schematic view of the structure of fig. 14 at another angle.

Icon: 1-a transfer tube; 2-fixing wires; 201-tip; 3-multi-lobed structure; 30-extension; 301-fixing holes; 4-a circumferential seal structure; 41-sealing rings; 42-pressing ring; 421-anchoring the thorn; 4201—a cylindrical section; 4202-frustum section; 43-pressing; 5-sealing the valve; 501-sealing the hole.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that: like reference numerals and letters designate like items in the drawings, and thus once an item is defined in one drawing, no further definition or explanation thereof is necessary in the subsequent drawings.

In describing the present invention, it should be noted that:

Unless specifically stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

The terms "front," "rear," "axial," "radial," "inner," "outer," and the like refer to an azimuth or positional relationship based on that shown in the drawings, or that is commonly put in use for the inventive product, merely to facilitate description of the invention and simplify description, and do not indicate or imply that the apparatus or element referred to must have a particular azimuth, be configured and operated in a particular azimuth, and therefore should not be construed as limiting the invention.

The terms "first," "second," and the like, are used merely for distinguishing between descriptions, and not for indicating a total number, or a relative position in time and/or space, and are not to be construed as indicating or implying relative importance.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.

The present embodiment provides a suture-free vascular flow-diversion device, referring to fig. 2 to 13, which includes a flow-diversion tube 1 and a fixation wire 2. The two ends of the diverting tube 1 are respectively provided with a multi-petal structure 3; as shown in fig. 5 and 7, fixing holes 301 are provided in the portions of the respective petals of the multi-petal structure 3 near the cusps; as shown in fig. 2 and 3, circumferential seal structures 4 are provided on the outer walls of the two ends of the transfer pipe 1 at positions close to the respective valve roots. Referring to fig. 2 and 5, a perforation is provided on a central side wall of the shunt tube 1, a sealing valve 5 is hermetically connected in the perforation, and as shown in fig. 8, a sealing hole 501 which allows the fixing wire 2 to pass through and automatically closes after the fixing wire 2 is separated is provided on the sealing valve 5.

In the binding state, as shown in fig. 2 to 8, the sealing hole 501 of the self-sealing valve 5 of the fixing wire 2 penetrates into the diversion tube 1, one part of the fixing wire 2 extends towards one end of the diversion tube 1 and penetrates through the fixing holes 301 on each valve at one end of the diversion tube 1 to form a cone-shaped structure with the valve tips gathered, and the other part of the fixing wire 2 extends towards the other end of the diversion tube 1 and penetrates through the fixing holes 301 on each valve at the other end of the diversion tube 1 to form a cone-shaped structure with the valve tips gathered. In the released state, the fixing wire 2 is pulled out of the diversion pipe 1 from the sealing hole 501, and as shown in fig. 13, each valve of the multi-valve structure 3 at the two ends of the diversion pipe 1 is sprung outwards along the radial direction of the diversion pipe 1.

More specifically, each of the petals of the multi-petal structure 3 provided at the end of the diverting tube 1 is an elastic piece having elasticity at the root, and in the constrained state, each of the petals (elastic pieces) always has a rebound tendency to rebound radially outward along the diverting tube 1. When in use, the suture-free vascular flow diversion device is in the constraint state shown in the above figures 2 to 6, referring to the vascular flow diversion principle of figure 1, the conical structure tip at one end of the flow diversion tube 1 is aligned with and pierces one blood vessel to be diverted, the conical structure tip at the other end of the flow diversion tube 1 is aligned with and pierces the other blood vessel to be diverted, then the sealing hole 501 of the self-sealing valve 5 of the fixing wire 2 is drawn out of the flow diversion tube 1, as shown in figures 13, 14 and 15, each valve of the multi-valve structures 3 at two ends of the flow diversion tube 1 is sprung outwards along the flow diversion tube 1 to be fixed on the inner wall of the blood vessel to be diverted, and the circumferential sealing structure 4 is abutted against the outer side surface of the outer wall of the blood vessel to be diverted so as to seal the gap between the adjacent valve roots of the multi-valve structures 3 and prevent blood leakage before endothelialization at the blood vessel puncture points. Thus, the vascular inversion operation between two blood vessels to be inverted is completed rapidly.

In this embodiment, optionally and preferably, as shown in fig. 2 and 5, the fixing wire 2 includes a first wire, a second wire and a pull ring; the pull ring is arranged outside the diversion pipe 1; the first wire and the second wire penetrate through the inside of the transfer tube 1 and respectively extend from the sealing valve 5 towards the two ends of the transfer tube 1; the ends of the first and second filaments near the sealing valve 5 are gathered together and connected to the pull ring after passing through the sealing hole 501 of the sealing valve 5. The specific connection means of the first wire, the second wire and the pull ring in the fixing wire 2 include, but are not limited to, welding or braiding, preferably but not exclusively: the fixing wire 2 is a wire which is folded in half and passes through the sealing hole 501 of the sealing valve 5; the folded bent ends thereof form a pull ring outside the transfer tube 1, and the folded ends are separated inside the transfer tube 1 as a first wire and a second wire, respectively, and further preferably, the folded parts of the first wire and the second wire, which are respectively adjacent to the folded bent ends, are woven into a convergence section, which passes through the sealing hole 501 of the sealing valve 5. The above only shows an alternative structure of the fixing wire 2 in order to draw the first wire and the second wire out of the shunt tube 1 simultaneously to further improve the operation efficiency, but in practice, it should be understood by those skilled in the art that in other non-optimal embodiments, the fixing wire 2 may be other structures, for example, no pull ring is provided, two first wires and second wires independent from each other are provided, and the first wires and the second wires are drawn out in separate steps.

In addition, in the present embodiment, the fixing hole 301 of each valve of the multi-valve structure 3 near the valve tip may be directly punched on the valve leaflet of each valve, but the operation of threading the fixing wire 2 in this way is complex, and the clamping may occur when the fixing wire 2 is pulled out, which affects the operation efficiency, and may also interfere with the success rate of the operation, so it is preferable that, in the constrained state, the side surface of each valve of the multi-valve structure 3 facing the inside of the shunt tube 1 is the inner side surface: as shown in fig. 5 to 7, the portions of each of the petals of the multi-petal structure 3 near the cusps are provided with extension portions 30, respectively, and the fixing holes 301 are provided in the extension portions 30; in the constrained state, the extension parts 30 of the respective petals of the multi-petal structure 3 are overlapped along the axial direction of the shunt tube 1, and the fixing wires 2 sequentially pass through the fixing holes 301 of the respective petals along the axial direction to the positions where the valve tips of the respective petals are gathered together and expose the multi-petal structure 3. The structure can ensure that each petal of the multi-petal structure 3 gathers together and does not rebound under the constraint state, and the fixing wire 2 is withdrawn axially when the fixing wire 2 is withdrawn, so that the withdrawal process does not have clamping stagnation.

Further preferably, the part of the fixing wire 2 exposing the multi-petal structure 3 is provided with a tip 201, and the structure can ensure that when the multi-petal structure 3 is penetrated into a blood vessel with diversion in a gathering state, the tip 201 is used for assisting to easily and quickly puncture the wall of the blood vessel into the blood vessel, thereby further improving the operation efficiency and avoiding that a plurality of puncture openings are generated by multiple times of penetration when the multi-petal structure 3 cannot be punctured once.

In this embodiment, the number of specific leaflets of the multi-leaflet structure 3 is not limited, and a three-leaflet structure is preferred in order to make the multi-leaflet structure 3 more conical when gathered.

In addition, optionally and preferably, the hardness of the end part of the diversion pipe 1 is greater than that of the middle pipe section of the diversion pipe 1, and specific implementation modes include, but are not limited to, a mode that the thickness of the end part of the diversion pipe 1 is greater than that of the middle pipe section of the diversion pipe 1, and the like, so that the structure can ensure the connection stability of the end part of the diversion pipe 1, and meanwhile, improve the flexibility of the middle section of the diversion pipe 1 so as to adapt to the interval of blood vessels to be diverted with more intervals.

As for the above-described circumferential sealing structure 4 in the present embodiment, there are various alternative structural types, such as, but not limited to, a skirt structure or the like that is circumferentially adhered to the outer peripheral surface of the transfer pipe 1.

Among them, as shown in fig. 2,3 and 9 to 12, optionally and preferably, in combination with fig. 14 and 15, a circumferential seal structure 4 is exemplified, including a seal ring 41 and an end pressing structure. Specifically, the end pressing structure includes a pressing ring 42 and a pressing member 43. With the front end of the pressing ring 42 and the pressing member 43 facing the end of the transfer tube 1, and the rear end of the pressing ring, the following will be true: the sealing ring 41 is fixed to the front end surface of the pressing ring 42, and optionally and preferably, the sealing ring 41 is embedded in the front end surface of the pressing ring 42 and protrudes from the front end surface of the pressing ring 42. As shown in fig. 12, the pressing member 43 is provided at the rear side of the pressing ring 42, and the pressing member 43 is an elastic member prefabricated in a truncated cone shape having a front end diameter smaller than a rear end diameter, and, in conjunction with fig. 2,3 and 10, 14 and 15, a small diameter end of the pressing member 43 is adhered or welded or otherwise fixedly connected to the outer wall of the transfer pipe 1, and is inserted into the pressing ring 42 from the rear end of the pressing ring 42, and a large diameter end of the pressing member 43 is a free end. In the restrained state, the pressing member 43 is restrained in a cylindrical shape by the restraining member; in the released state, the tie is released, and the pressing piece 43 is transformed to the pre-prepared frustum shape to press the pressing ring 42 in the forward direction. When the sealing device is used, the fixing wire 2 is drawn out from the sealing hole 501 of the self-sealing valve 5, after the multi-flap structure 3 at the end part is sprung, the binding piece is released, the pressure piece 43 is transformed to the shape of the prefabricated frustum, the pressure ring 42 is extruded towards the front end direction, the pressure ring 42 is tightly abutted to the outer side of the outer wall of a blood vessel with the sealing ring 41, the rebound force of the pressure piece 43 provides continuous compression force, the sealing ring 41 is ensured to continuously seal the puncture opening under the action of blood flow, good sealing effect is ensured, blood leakage before endothelialization of cells at a blood vessel puncture point is fully avoided, and the sealing effect of the structure is reliable and durable.

In this structure, it is further preferable that the inner cavity of the pressing ring 42 includes a cylindrical section 4201 and a frustum section 4202 connected to the rear end of the cylindrical section 4201 and having an inner diameter gradually increasing from front to rear, and the taper of the pressing member 43 after releasing is larger than that of the frustum section 4202 inside the pressing ring 42, and in this structure, a larger portion of the front end of the pressing member 43 can be inserted into the pressing ring 42, so that the pressing member 43 will not come out of the pressing ring 42 during releasing, thereby providing a more reliable pushing force (pressing force).

In addition, in this structure, the pressing member 43 is optionally and preferably a metal mesh tube structure as shown in fig. 11 and 12, which has a large elastic deformation force and is easy to assemble, and of course, the pressing member 43 is not limited to the metal mesh tube structure shown in fig. 11 and 12, but may be a conical ring sheet structure or a wire wound film support or the like.

In addition, in this structure, optionally and more preferably, an anchoring spike 421 is further provided on the front end face of the pressing ring 42, when the end of the transfer tube 1 is aligned with the blood vessel to be transferred, the anchoring spike 421 can pierce into the outer wall of the blood vessel, assist in positioning the pierced point, avoid moving the pierced point, and after piercing, the positioning reliability can be improved through the anchoring spike 421, and under the action of the anchoring spike 421, the sealing ring 41 can also fully abut against the outer wall of the blood vessel, so as to ensure good sealing performance.

For the tie-down in the structure to releasably tie down the pressing member 43, it is optional and preferable to use a tie-down wire or a compression film sheath with a release wire as the tie-down; when the binding wire is adopted, the binding wire is directly wound outside the pressing piece 43 and then is tied into a slipknot, so that the pressing piece 43 is radially compressed, and the binding wire is retracted to release the pressing piece 43; when the compression film sleeve with the release wire is adopted, specifically, the film structure is wound around the pressing piece 43 for one circle and then is fixed by the release wire to form the film sleeve, so that the release wire is radially compressed, and when the release wire is retracted, the compression film sleeve can be opened, and the pressing piece 43 can be released.

Finally, it should be noted that: in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by differences from other embodiments, and identical and similar parts between the embodiments are only required to be seen with each other; the above embodiments in the present specification are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims

1. A suture-free vascular inversion device, characterized in that: comprises a diversion pipe (1) and a fixed wire (2);

two ends of the diversion pipe (1) are respectively provided with a multi-petal structure (3); fixing holes (301) are respectively arranged at the positions, close to the cusps, of each valve of the multi-valve structure (3); the peripheral sealing structures (4) are respectively arranged at the positions, close to the valve roots, on the outer walls of the two ends of the current transfer pipe (1); the circumferential sealing structure (4) comprises a sealing ring (41) and an end part compressing structure; the end pressing structure comprises a pressing ring (42) and a pressing piece (43); with one end of the pressing ring (42) and one end of the pressing member (43) facing the end of the transfer tube (1) being the front end and the other end being the rear end, then: the sealing ring (41) is fixed on the front end surface of the pressing ring (42); the pressurizing piece (43) is arranged at the rear side of the pressing ring (42), the pressurizing piece (43) is an elastic piece which is prefabricated into a frustum shape with the front end diameter smaller than the rear end diameter, the small diameter end of the elastic piece is fixedly connected to the outer wall of the flow turning pipe (1), the small diameter end of the elastic piece is inserted into the pressing ring (42) from the rear end of the pressing ring (42), and the large diameter end of the elastic piece is a free end; a perforation is arranged on the side wall of the middle part of the current converting pipe (1), a sealing valve (5) is connected in the perforation in a sealing way, and a sealing hole (501) which allows the fixing wire (2) to pass through and is automatically closed after the fixing wire (2) is separated is arranged on the sealing valve (5);

In the binding state, the pressing piece (43) is bound into a cylinder shape by the binding piece; the fixing wire (2) penetrates into the diversion pipe (1) from the sealing hole (501), one part of the fixing wire extends towards one end of the diversion pipe (1), and the other part extends towards the other end of the diversion pipe (1), so that the fixing wire penetrates through the fixing holes (301) on the two petals at the two ends of the diversion pipe (1) respectively to gather the petals at the corresponding ends into cone structures with the valve tips;

In a release state, the fixing wire (2) is pulled out of the diversion pipe (1) from the sealing hole (501), and each petal of the multi-petal structure (3) is sprung outwards along the diversion pipe (1) in the radial direction; releasing the tie, the pressing member (43) is transformed to a pre-formed frustum shape to press the press ring (42) in the forward direction.

2. The suture-free vascular flow-transfer device of claim 1, wherein: the fixing wire (2) comprises a first wire, a second wire and a pull ring;

The pull ring is arranged outside the diversion pipe (1);

The first wire and the second wire penetrate through the inside of the transfer pipe (1) and extend from the sealing valve (5) towards two ends of the transfer pipe (1) respectively; the first wire and the second wire are gathered together at one end of each wire close to the sealing valve (5) and are connected to the pull ring after passing through the sealing hole (501) of the sealing valve (5).

3. The suture-free vascular flow-transfer device of claim 1, wherein: under the constraint state, the side surface of each petal of the multi-petal structure (3) facing the inside of the current transfer pipe (1) is an inner side surface, and then:

the parts of each valve of the multi-valve structure (3) close to the valve tips are respectively provided with an extension part (30), and the fixing holes (301) are arranged on the extension parts (30);

In a binding state, extension parts (30) of the petals of the multi-petal structure (3) are overlapped along the axial direction of the current transfer tube (1), and the fixing wires (2) sequentially penetrate through fixing holes (301) of the petals along the axial direction to the positions, where the valve tips of the petals are gathered together, of the center of the petals and are exposed out of the multi-petal structure (3).

4. A suture-free vascular flow-transfer device as defined in claim 3, wherein: the part of the fixing wire (2) exposed out of the multi-petal structure (3) is provided with a tip (201).

5. The suture-free vascular flow-transfer device of claim 1, wherein: the hardness of the end part of the transfer pipe (1) is larger than that of the middle pipe section of the transfer pipe (1).

6. The suture-free vascular flow-transfer device of claim 1, wherein: the inner cavity of the pressing ring (42) comprises a cylindrical section (4201) and a frustum section (4202) which is connected to the rear end of the cylindrical section (4201) and the inner diameter of which gradually increases from front to back; and, the taper of the pressurizing piece (43) after release is larger than the taper of the inner cone section (4202) of the pressing ring (42).

7. The suture-free vascular flow-transfer device of claim 1, wherein: the pressurizing piece (43) is of a metal net barrel structure.

8. The suture-free vascular flow-transfer device of claim 1, wherein: an anchoring thorn (421) is arranged on the front end face of the pressing ring (42).

9. The suture-free vascular flow-transfer device of claim 1, wherein: the binding piece adopts a binding wire or a compression film sleeve with a release wire.