CN119074101B

CN119074101B - Vascular bridging assembly

Info

Publication number: CN119074101B
Application number: CN202411562155.4A
Authority: CN
Inventors: 刘丽娜; 潘兵辉; 张忠英
Original assignee: Huarong Kechuang Biotechnology Tianjin Co ltd
Current assignee: Huarong Kechuang Biotechnology Tianjin Co ltd
Priority date: 2024-11-05
Filing date: 2024-11-05
Publication date: 2025-02-11
Anticipated expiration: 2044-11-05
Also published as: CN119074101A

Abstract

The present disclosure provides a blood vessel bridging subassembly, blood vessel bridging subassembly includes bridging body, support element and self-locking mechanism, wherein, bridging body is formed with the bridging portion of diameter subassembly increase and interval arrangement in the first groove of enclasping between bridging portion along its axial, self-locking mechanism enclasps the blood vessel in first enclasping inslot is locked. According to the blood vessel bridging component disclosed by the invention has the advantages that the structure is simple, the operation is convenient, the blood vessel bridging hemostasis adapting to different diameters can be ensured, the stable and reliable fixation of the blood vessel can be realized, and the failure risk is reduced.

Description

Vascular bridging assembly

Technical Field

The present disclosure relates to the field of medical devices, and more particularly to a vascular bridging assembly.

Background

Currently, vascular bridging techniques are applicable in the field of treatment of limb discontinuities or cerebrovascular diseases. When the off-body blood supply of the isolated severed limb is stopped or insufficient due to the off-body blood supply, if the blood circulation of the remote limb cannot be repaired in time, the severed limb can be caused to have the consequences of long ischemia time, necrosis and the like, or when the severed limb is treated for cerebrovascular diseases, critical cerebral infarction and the like can be caused if the large vessel occlusion cannot be treated as soon as possible.

At present, the existing blood vessel bridging technology has various problems, such as complex structure, complicated operation steps and inconvenient use, and in addition, the bridging component on the market is not firm in fixing the disconnected blood vessel, is easy to fall off, has poor suitability and cannot adapt to bridging of different blood vessels. For example, the bridging scheme of CN201610964896.4 is to prop the blood vessel at the vascular socket 1, and clamp the blood vessel by using the form of the sub-clamp arm and the main-clamp arm, on one hand, the fixing mode of the clamping mechanism is not firm, and on the other hand, the clamping mechanism cannot be applied to blood vessels with different sizes.

Based on this, the present disclosure is directed to providing a vascular bridge assembly that solves at least one of the problems of the prior art.

Disclosure of Invention

In view of the deficiencies of the prior art, the present disclosure provides a vascular bridge assembly.

Specifically, the present disclosure is implemented by the following technical scheme:

In a first aspect, embodiments of the present disclosure provide a vascular bridge assembly for temporary hemostasis and recanalization bridging of a blood vessel, the vascular bridge assembly comprising:

The bridge body is provided with a head end, a tail end far away from the head end and a bridge channel forming a through hole;

a support element disposed through the bridge channel having at least a deformed configuration capable of freely switching between contracted and expanded and a delivery channel, wherein the delivery channel comprises at least a first delivery channel;

the self-locking mechanism is arranged separately from the bridging body and is configured to tightly hold and self-lock the blood vessel and the bridging body, and comprises a holding part and an enabling part,

The head end comprises bridging parts with gradually increased diameters along the axial direction of the head end and a plurality of first enclasping grooves which are arranged between the bridging parts at intervals, so that blood vessels with different diameters can be bridged at the head end, and the blood vessels are fixed on the periphery of the bridging parts by the enclasping parts.

In some embodiments, the support element includes a support portion, a guide bar, and a tip coupling portion.

In some embodiments, the support comprises a deformation portion having a cavity and a second clasping groove disposed at an outer periphery of the deformation portion, the deformation portion being configured to be capable of expanding or contracting when a medium is filled or removed, and in a contracted state, the deformation portion being adapted to pass out of the head end via the bridge channel;

the guide rod is axially provided with the first delivery channel, and the first delivery channel is communicated with the deformation part and is used for guiding and delivering the medium;

The tip coupling portion, which communicates with the guide rod, is configured to supply or remove the medium.

In some embodiments, the support part is a fusiform structure, and includes a central flow channel, and the deformation part is disposed at the periphery of the central flow channel, where the central flow channel and the deformation part are isolated from each other.

In some embodiments, the delivery channel further comprises a second delivery channel coaxially disposed within the guide rod with the first delivery channel, and the second delivery channel is in communication with one end of the central flow channel.

In some embodiments, the tip coupling portion is provided with a blocking portion for selectively preventing fluid within the second delivery channel from flowing outwardly through the tip coupling portion.

In some embodiments, the clasping portion includes a pair of symmetrically shaped clasping arms, a pair of pressing portions, and a pivot pin, wherein the clasping arms include a free end and a fixed end, and the fixed end is connected with the pressing portions.

In some embodiments, the clamping arms are in an approximately S-shaped structure, the two clamping arms are hinged through the pivot pin to form a clamping space with adjustable space, and the two pressing parts are oppositely arranged and connected through the enabling part.

In some embodiments, the enabling portion includes a flexible sleeve and a self-locking spring located within the flexible sleeve.

In some embodiments, the device further comprises a limiting groove and a positioning part matched with the limiting groove, wherein the limiting groove is arranged on the inner wall of the bridging channel, and the positioning part is arranged on the outer wall of the guide and delivery rod and used for controlling the length of the supporting element extending out of the head end.

In a second aspect, embodiments of the present disclosure provide a vascular bridge system comprising a bridge body and a pair of vascular bridge assemblies disposed at opposite ends of the bridge body, the bridge body including a bridge flow passage and being configured for removable connection with the vascular bridge assemblies, wherein,

The vascular bridge component is the vascular bridge component described in any of the foregoing technical solutions.

In some embodiments, the method comprises, among other things,

The bridging body comprises at least a first bridging connector and a second bridging connector, the vascular bridging component comprises a first vascular bridging component and a second vascular bridging component, wherein,

The first and second vascular bridge components are respectively connected with the bridge main body through the first and second bridge joints, and the bridge flow passage is communicated with at least one of the bridge passage or the delivery passage, or

Before the first and second vascular bridge components are connected with the bridge main body through the first and second bridge joints, the supporting element is taken out through the bridge channel after being deformed by shrinkage.

According to the embodiment of the disclosure, the problems that an existing blood vessel bridging device is complex in structure, is not firm in blood vessel fixation, cannot meet bridging applicability of blood vessels with different diameters and the like are solved. According to the bridge assembly, the head end of the bridge body is arranged to be of a structure with the diameter gradually increased along the axial direction of the bridge body, so that the bridge assembly can be adapted to blood vessels of various sizes to meet the requirements of different application scenes, the fixing effect is better through the design of the fixing mode of the holding groove and the self-locking mechanism, the blood vessels are not easy to fall off, the failure risk is reduced, the supporting element capable of freely switching between the contraction state and the expansion state is designed, the blood vessels can be supported and fixed more quickly, effective hemostasis and bridging can be carried out on the blood vessels, and meanwhile the bridging efficiency is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.

FIG. 1 is a schematic illustration of a vascular bridge assembly in accordance with an embodiment of the present disclosure;

FIG. 2 is a structural perspective view of a support element in an embodiment of the present disclosure;

FIG. 3 is a cross-sectional view of a vascular bridge assembly in an embodiment of the present disclosure;

FIG. 4 is a perspective view of the structure of a self-locking mechanism in an embodiment of the present disclosure;

fig. 5 is a schematic plan view of a vascular bridging system in an embodiment of the present disclosure.

Reference numerals:

10, bridge body, 20, supporting element, 30, self-locking mechanism, 11, head end, 12, tail end, 13, intermediate transition portion, 14, bridge channel, 110, bridge portion, 111, first holding groove, 140, limit groove, 21, supporting portion, 22, guide bar, 23, end connecting portion, 210, deformation portion, 211, second holding groove, 212, central runner, 220, first delivery channel, 221, second delivery channel, 222, positioning portion, 231, blocking portion, 31, holding portion, 32, enabling portion, 310, clamping arm, 311, pressing portion, 312, pivot pin, 3101, free end, 3102, fixed end, 320, flexible sleeve, 321, self-locking spring, 100, vascular bridge assembly, 200, bridge body, 201, first bridge connector, 202, second bridge connector.

Detailed Description

The present disclosure will now be discussed with reference to several embodiments. It should be understood that these embodiments are discussed only in order to enable a person of ordinary skill in the art to better understand and thus practice the present disclosure, and are not meant to imply any limitation on the scope of the present disclosure.

As used herein, the terms "comprises," comprising, "and variations thereof are to be construed as open-ended terms that mean" including, but not limited to, "an embodiment, and" one embodiment "are to be interpreted to mean" at least one embodiment, "another embodiment" is to be interpreted to mean "at least one other embodiment," the terms "first," "second," and the like, may refer to different or the same objects, and the term "arrangement" is not limited to direct or indirect connections, nor to a particular manner of connection. Other explicit and implicit definitions are also possible below.

Some specific values or ranges of values may be referred to in the following description. It should be understood that these numerical values and numerical ranges are merely exemplary, which may be advantageous to put the concepts of the present disclosure into practice. However, the description of these examples is not intended to limit the scope of the present disclosure in any way. These values or ranges of values may be set otherwise, depending on the particular application and requirements.

As described above, the existing blood vessel bridging device has the disadvantages of complex structure, complicated operation steps, inconvenient use, unstable fixation of the bridging component to the severed blood vessel, easy falling off, poor reliability, and poor bridging suitability, and cannot be adapted to blood vessels with different diameters. Embodiments of the present disclosure provide a vascular bridge assembly and a bridge system that at least partially address the above-described problems. The structure and operation of a vascular bridge assembly and a bridge system according to example embodiments of the present disclosure will be described below with reference to fig. 1 to 5.

As shown in fig. 1-5, an embodiment of the present disclosure provides a vascular bridge assembly for temporary hemostasis and recanalization bridging of a blood vessel. The vascular bridge assembly mainly comprises a bridge body 10, a supporting element 20 and a self-locking mechanism 30.

Specifically:

as shown in fig. 1, as a main structure of a vascular bridge assembly, a bridge body 10 of the present disclosure has a head end 11, a tail end 12 remote from the head end 11, an intermediate transition portion 13 connecting the head end 11 and the tail end 12, and a bridge passage 14 forming a through hole.

Wherein the head end 11 includes a bridging portion 110 formed with a gradually increasing diameter along an axial direction thereof and a plurality of first clasping grooves 111 arranged at intervals between the bridging portions 110. Illustratively, the bridge portion 110 is formed in a truncated cone structure having a diameter ranging from small to large and smoothly transiting to be smoothly fitted over and bridged to blood vessels having different diameters, and a plurality of first clasping grooves 111 are provided at predetermined intervals on an outer circumferential wall surface thereof in an axial direction of the bridge portion 110. After the blood vessel is sleeved on the peripheral wall of the bridging portion 110, the blood vessel can be clamped and locked in the first clamping groove 111 through the self-locking mechanism 30.

The tail end 12 is connected with the head end 11 through an intermediate transition part 13 and is used for connection fixation, for example, detachable fixation with other components. Illustratively, the trailing end 12 is formed with a threaded connection.

An intermediate transition portion 13 for connecting the head end 11 and the tail end 12, the outer wall surface of which is formed with a plurality of annular protrusions, the diameter of the intermediate transition portion 13 being larger than the maximum diameter end of the head end 11. A smooth transition section is formed between the intermediate transition portion 13 and the threaded portion of the trailing end 12. It will be appreciated by those skilled in the art that in certain circumstances, the intermediate transition portion 13 of the present disclosure may also be used to nest certain larger diameter vessels and secure the vessels in the grooves between annular protrusions by the self-locking mechanism 30, or alternatively, the annular protrusions may be formed as threaded structures for threaded engagement with different circumscribing structures, as desired.

As shown in fig. 3, the bridging passage 14 is formed through the inside of the bridging body 10 in the axial direction for the through-feeding or the out-feeding of the support member 20. The bridging channel 14 may have a uniform pore size, or may have a gradually decreasing pore size from the tail end 12 to the head end 11, so that the wall thickness of the bridging body 10 is uniform, and the bridging body 10 is reduced in weight, so that the use is convenient.

According to the present disclosure, by improving the structure of the bridging body, the bridging assembly can adapt to various sizes of blood vessel bridging, and can maintain the firmness and reliability of bridging fixation.

The support element 20 of the present disclosure is disposed through the bridge channel 14, having at least a deformed configuration capable of freely switching between contracted and expanded delivery channels, wherein the delivery channels include at least a first delivery channel 220.

The support member 20 of the present disclosure is provided to be capable of extending into the interior of a severed blood vessel to be bridged by a predetermined depth in a contracted state, and to support and fix the blood vessel to be bridged in an expanded state, and at the same time, the head end 11 of the bridging body 10 can be simultaneously introduced into the interior of the blood vessel to be bridged with the support member 20 being deep and expanded, so that the blood vessel can be sleeved on the bridging portion 110 of the head end 11.

Illustratively, the support element 20 of the present disclosure may be configured to direct a media item therethrough for deformation by the first delivery channel 220. For example, the medium may be a gas or a liquid medium, and specifically may be nitrogen, physiological saline, or the like. The present disclosure is not particularly limited thereto.

According to an embodiment of the present disclosure, as shown in fig. 2, the support member 20 includes a support portion 21, a guide bar 22, and a tip coupling portion 23. The support portion 21 includes a deformation portion 210 having a cavity and a second holding groove 211 disposed at an outer periphery of the deformation portion 210, where the deformation portion 210 has a certain wall thickness and is configured to be capable of expanding or contracting and deforming when the medium is filled or removed, and in a contracted state, the deformation portion 210 is adapted to pass out of the head end 11 through the bridge channel 14.

Illustratively, the support 21 may have a shuttle-shaped structure, and mainly includes a central flow channel 212, and the deformation portion 210 is disposed around the periphery of the central flow channel 212. Wherein, the central flow channel 212 and the deformation portion 210 are isolated from each other, i.e. the central flow channel 212 is not communicated with the deformation portion 210. When the cavity of the deformed portion 210 of the shuttle structure is filled with the medium, the deformed portion 210 is expanded, for example, into a spherical shape. The second enclasping groove 211 is disposed at the symmetrical center of the fusiform structure along the circumferential direction of the deformation portion 210, is of a concave structure, and has a depth, and the second enclasping groove 211 of the present disclosure can also be adapted to the self-locking mechanism 30 to achieve auxiliary clamping.

The deformation portion 210 of the present disclosure may be made of a medical polyurethane material, and the constituent materials of the deformation portion are not particularly limited in this disclosure, and those skilled in the art will understand that any material capable of satisfying the deformation transformation configuration of the deformation portion of the present disclosure may be used in this disclosure.

The guide rod 22 includes a shaft rod of a predetermined length, and is provided with a first delivery passage 220 and a second delivery passage 221 coaxially disposed with the first delivery passage 220 in an axial direction thereof. The first delivery channel 220 is disposed as a peripheral annular channel and is in communication with the deformation portion 210 for guiding the medium. The guide rod 22 of the present disclosure is connected to the deformation portion 210, and can guide a medium in the cavity of the deformation portion 210 through the guide rod 22, for example, to provide or remove a fluid with a certain pressure to expand or shrink the deformation portion 210, and further, the second delivery channel 221 has a central hole structure, one end of which is connected to one end of the central flow channel 212 of the support portion 21, and is used for a temporary recovery channel of a medical fluid delivery or a blood vessel. For example, a drug solution (e.g., an anticoagulant such as heparin) may be injected into the second delivery channel 221 through the distal coupling portion 23 and into the blood vessel through the central flow channel 212 to prevent thrombosis.

A tip coupling part 23 communicating with the guide rod 22, the tip coupling part 23 including a first port (not shown) connected with the first delivery channel 220 and a second port (not shown) connected with the second delivery channel 221, the first port and the second port being configured to supply or remove a medium, respectively, and to inject a liquid medicine into the second delivery channel 221.

Further, the tip coupling portion 23 is further provided with a blocking portion 231, and the blocking portion 231 may function as a one-way valve for selectively blocking the fluid in the second delivery channel 221 from flowing out through the tip coupling portion 23. For example, when the vascular bridge assembly of the present disclosure is used to stop bleeding of a blood vessel, the blocking portion 231 may be maintained in a closed state to prevent blood, medical fluid, etc. in the blood vessel from flowing out of the distal end coupling portion 23 via the second delivery channel 221, and when the vascular bridge assembly of the present disclosure is used as a bridge system as described below, the blocking portion 231 may be opened by a convex strip-shaped arm provided in a bridge connector (e.g., a first bridge connector, a second bridge connector) of the bridge system and maintained in a normally open state to ensure that both ends of the blood vessel bridged by the bridge system form a clear temporary recanalization channel via the bridge system when the vascular bridge assembly of the present disclosure is assembled with the bridge body.

According to an embodiment of the present disclosure, as shown in fig. 4, the self-locking mechanism 30 of the present disclosure is separately disposed from the bridge body 10, where the separate disposition is understood that the self-locking mechanism 30 is taken as a part of the bridge assembly, and the bridge split body 10 is independently designed and configured to hug and self-lock the blood vessel with the bridge body 10, preferably, the self-locking mechanism 30 may be adapted to the first hug groove 111 of the bridge body 10, and hug the blood vessel clamp to be bridged in the first hug groove 111 to achieve hug fixation.

The self-locking mechanism 30 of the present disclosure may include a hugging portion 31 and an enabling portion 32 connected with the hugging portion 31, which enables automatic locking of the hugging portion 31.

The clasping portion 31 may be composed of a pair of clamping arms 310 with symmetrical shapes, a pair of pressing portions 311, and a pivot pin 312. The clasping arm 310 includes a free end 3101 and a fixed end 3102, and the fixed end 3102 is connected to the pressing portion 311.

As shown in fig. 3, the clamping arms 310 of the present disclosure are designed to be approximately S-shaped, and the two clamping arms 310 are hinged by a pivot pin 312 to form a clamping space with an adjustable space, for example, in a free state, the free ends 3101 of the two clamping arms 310 may abut against each other, and the clamping space is formed to be approximately circular, and the opening of the clamping space is adjustable under the action of an external force.

A pair of pressing portions 311 are provided to be connected to the fixed ends 3102 of the clasping arms 310, respectively, such that the two pressing portions 311 are oppositely arranged at a preset interval, and the two pressing portions 311 are connected to the first and second ends of the enabling portion 32, respectively. In a natural state, the enabling portion 32 can provide a force to the two pressing portions 311 to keep the free ends 3101 of the two clamping arms 310 in an abutting state all the time, when the two pressing portions 311 are applied with an external force along opposite directions, the opening degree of the clamping space is adjustable to be suitable for the pair of clamping arms 310 to open to clamp and clamp the clamping object, meanwhile, the enabling portion 32 can deform and store energy, and when the external force applied to the pressing portions 311 disappears, the enabling portion 32 releases energy to provide a reliable clamping force, so that the clamping arms 310 can rotate along the pivot pins 312 to reset to clamp and clamp the clamping object.

According to the embodiments of the present disclosure, it should be understood by those of ordinary skill in the art that the self-locking mechanism of the present disclosure is applicable not only to the first enclasping groove, but also to the second enclasping groove, and of course, according to the needs of the actual application, the groove adaptation between the annular protrusions on the intermediate transition portion may also be satisfied. Therefore, the self-locking mechanism can be set into various specifications and sizes according to the requirements of actual application scenes so as to meet the application of multiple occasions.

In some embodiments, the enabling portion 32 may include a flexible sleeve 320 and a self-locking spring 321 located within the flexible sleeve 320. In this embodiment, the opposite surfaces of the two pressing portions 311 are respectively provided with a mounting groove, such as a circular groove, and one end of the self-locking spring 321 is connected to the mounting groove of one pressing portion 311, and the other end is connected to the mounting groove of the other pressing portion 311. Preferably, the self-locking spring 321 has a preset length, and the preset length is greater than a preset distance formed between the two pressing portions 311, so that the self-locking mechanism 30 can be always in an energy storage state, that is, the self-locking spring 321 should be kept in a compressed state all the time, and two ends of the flexible sleeve 320 are respectively embedded in the mounting grooves of the pressing portions 311. Preferably, the flexible sleeve 320 is not stored in a natural state, that is, a natural state in which the pressing portion 311 of the self-locking mechanism 30 is not applied with an external force, that is, the natural length of the flexible sleeve 320 is equal to the aforementioned preset interval. The flexible sleeve 320 of the present disclosure may be made of medical rubber, silicone, or the like.

The self-locking mechanism is adopted to ensure that the blood vessel is reliably and firmly kept at the bridging body part, and the self-locking mechanism is simple in structure and convenient to operate, and can be used for rapidly locking the blood vessel under the emergency condition of doctors. The combined structure of the flexible sleeve 320 and the self-locking spring 321 can protect the self-locking spring through the flexible sleeve, so that the self-locking spring is prevented from being in contact with the external environment for a long time to cause failure, and the stability and reliability of the self-locking mechanism structure are further improved.

According to an embodiment of the present disclosure, the vascular bridge assembly further includes a limiting groove 140 and a positioning portion 222 mated with the limiting groove 140. The limiting groove 140 is disposed on the inner wall of the bridging channel 14, and the positioning portion 222 is disposed on the outer wall of the guiding rod 22 for controlling the length of the supporting element 20 extending out of the head end 11. The limiting groove 140 is formed by two or more of the inner walls of the bridging channel 14, and the positioning portion 222 may be formed by two or more of the outer wall of the guiding rod 22 and may be formed by two or more of the elongated protrusions, for controlling the length of the supporting member 20 extending out of the bridging body 10 to limit the insertion depth of the supporting portion 21 into the blood vessel.

According to another embodiment of the present disclosure, a vascular bridging system is provided.

As shown in fig. 5, the vascular bridge system includes a bridge main body 200 and a pair of vascular bridge assemblies 100 respectively disposed at two ends of the bridge main body 200, wherein the bridge main body 200 includes a bridge flow channel, and the bridge main body and the vascular bridge assemblies 100 are detachably connected, and the vascular bridge assemblies are the vascular bridge assemblies described in the foregoing embodiments. Since the vascular bridge assembly has the same structure and components as those of the vascular bridge assembly described in the previous embodiments, the specific structure, composition and function of the vascular bridge assembly will not be repeated herein.

In some embodiments, wherein the bridging body 200 of the bridging system comprises at least a first bridging connector 201 and a second bridging connector 202, the number of vascular bridging components 100 is two, a first vascular bridging component and a second vascular bridging component, respectively, wherein,

The first and second vascular bridge components are connected 201, 202 to the bridge body 200 via first and second bridge connectors, respectively, and the bridge flow channel is in communication with at least one of the bridge channel or the delivery channel. In this embodiment, two ends of the blood vessel to be bridged are respectively connected and conducted with the first blood vessel bridging component and the second blood vessel bridging component, and are conducted through the bridging main body 200 to form a first temporary re-conduction channel. The first temporary recovery flow channel may sequentially comprise a central flow channel of the first vascular bridge component, a second delivery channel of the first vascular bridge component, a bridge flow channel of the bridge main body 200, a second delivery channel of the second vascular bridge component, and a central flow channel of the first vascular bridge component.

Alternatively, the support member may be removed through the bridge channel after being deformed by shrinkage before the first and second vascular bridge assemblies are connected to the bridge body 200 via the first and second bridge connectors 201, 202. And then the tail ends of the first bridging component and the second bridging component are connected with the first bridging joint and the second bridging joint, for example, are screwed or fixed in other detachable connection modes, so that a second temporary recovery flow passage with another structure is formed. The second temporary bypass channel may be composed of a bridge channel of the first vascular bridge assembly, a bridge channel of the bridge body 200, and a bridge channel of the second vascular bridge assembly. The second temporary recovery flow path has a larger flow pipe diameter and thus a larger flow volume than the first temporary recovery flow path of the previous embodiment, but the premise of achieving this effect is that the support element needs to be removed in advance when the bridge system is assembled. One of ordinary skill in the art will appreciate that one of the ways may be reasonably selected to suit the needs of the application.

Any references to directions and orientations in the description of the embodiments herein are for convenience only and should not be construed as limiting the scope of the invention in any way. The description of the preferred embodiments will refer to combinations of features, which may be present alone or in combination, and the invention is not particularly limited to the preferred embodiments. The scope of the invention is defined by the claims.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims

1. A vascular bridge assembly for temporary hemostasis and recanalization bridging of a blood vessel, the vascular bridge assembly comprising:

A bridging body (10) having a head end (11), a tail end (12) remote from the head end (11), and a bridging channel (14) forming a through hole;

A support element (20) arranged through the bridge channel (14) having at least a deformed configuration capable of freely switching between a contracted and an expanded delivery channel, wherein the delivery channel comprises at least a first delivery channel (220);

the self-locking mechanism (30) is arranged separately from the bridging body (10) and is configured to tightly hold and self-lock the blood vessel and the bridging body (10), and comprises a holding part (31) and an enabling part (32),

The head end (11) comprises bridging parts (110) with gradually increased diameters along the axial direction of the head end and a plurality of first enclasping grooves (111) which are arranged between the bridging parts (110) at intervals so as to be suitable for bridging blood vessels with different diameters on the head end (11) and be fixed on the periphery of the bridging parts (110) by the enclasping parts (31);

the support element (20) comprises a support (21), a guide rod (22) and a terminal coupling (23);

The support part (21) comprises a deformation part (210) with a cavity and a second enclasping groove (211) arranged at the periphery of the deformation part, wherein the deformation part (210) is configured to be capable of expanding or contracting and deforming when a medium is filled or removed, and in a contracted state, the deformation part (210) is suitable for penetrating out of the head end (11) through the bridging channel (14);

the guide rod (22) is axially provided with the first delivery channel (220), and the first delivery channel (220) is communicated with the deformation part (210) and is used for guiding the medium;

the tip end coupling portion (23) is in communication with the guide rod (22) and configured to supply or remove the medium.

2. The vascular bridge assembly according to claim 1, wherein the support portion (21) has a shuttle-like structure comprising a central flow channel (212), the deformation portion (210) being arranged at the periphery of the central flow channel (212), wherein the central flow channel (212) and the deformation portion (210) are isolated from each other.

3. The vascular bridge assembly according to claim 2, wherein the delivery channel further comprises a second delivery channel (221), the second delivery channel (221) being coaxially arranged inside the guide rod (22) with the first delivery channel (220), and the second delivery channel (221) being in communication with one end of the central flow channel (212).

4. A vascular bridge assembly according to claim 3, wherein the distal coupling portion (23) is provided with a blocking portion (231) for selectively blocking the outflow of fluid in the second delivery channel (221) outwards through the distal coupling portion (23).

5. The vascular bridge assembly according to any one of claims 1 to 4, wherein the clasping portion (31) comprises a pair of symmetrically shaped clasping arms (310), a pair of pressing portions (311) and a pivot pin (312), wherein the clasping arms (310) comprise a free end (3101) and a fixed end (3102), the fixed end (3102) being connected to the pressing portions (311).

6. The vascular bridge assembly of claim 5, wherein,

The clamping arms (310) are of an approximately S-shaped structure, the two clamping arms (310) are hinged through the pivot pins (312) and then are enclosed to form a clamping space with adjustable space, and the two pressing parts (311) are oppositely arranged and connected through the enabling part (32).

7. The vascular bridge assembly of claim 6, wherein the blood vessel bridge assembly,

The enabling part (32) comprises a flexible sleeve (320) and a self-locking spring (321) positioned in the flexible sleeve (320).

8. A vascular bridge assembly according to any of claims 1-3, further comprising a limit groove (140) and a positioning portion (222) cooperating with the limit groove (140), wherein the limit groove (140) is arranged at an inner wall of the bridge channel (14), and wherein the positioning portion (222) is arranged at an outer wall of the guiding rod (22) for controlling the length of the supporting element (20) extending out of the head end (11).