Vascular bridging components

Abstract

The present disclosure provides a blood vessel bridging assembly, the blood vessel bridging assembly comprising a bridging body, a supporting element and a self-locking mechanism, wherein the bridging body is formed with a bridging portion with an enlarged diameter assembly along its axial direction and a first clamping groove arranged at intervals between the bridging portions, and the self-locking mechanism clamps and self-locks the blood vessel in the first clamping groove. According to the present disclosure, the blood vessel bridging assembly has a simple structure and is easy to operate, which can not only ensure hemostasis of blood vessels adapted to different diameters, but also achieve stable and reliable fixation of the blood vessels, reducing the risk of failure.

Description

Technical Field

[0001] The present disclosure relates to the field of medical devices, and in particular to a vascular bridging assembly. Background Art

[0002] Currently, vascular bridging technology can be applied to the treatment of limb amputation or cerebrovascular disease. When limb amputation causes the blood supply of the severed limb to be stopped or insufficient, if the blood circulation of the distal limb cannot be restored in time, the severed limb will be ischemic for too long and will suffer necrosis and other consequences. Or, when treating cerebrovascular disease, if the large blood vessel occlusion cannot be dealt with as soon as possible, it will lead to serious consequences such as critical cerebral infarction.

[0003] At present, there are many problems with the existing vascular bridging technology. For example, the structure of the vascular bridging device is complex and the operation steps are cumbersome, which makes it inconvenient to use. In addition, the bridging components on the market are not firmly fixed to the severed blood vessels, which are easy to fall off, and have poor adaptability and cannot adapt to the bridging of different blood vessels. For example, the bridging solution with patent application number CN201610964896.4 supports the blood vessel at the vascular sleeve joint 1 and clamps the blood vessel in the form of a sub-clamp arm and a mother clamp arm. On the one hand, the clamping mechanism is not firmly fixed, and on the other hand, it cannot be used for blood vessels of different sizes.

[0004] Based on this, the present disclosure aims to provide a vascular bridging component to solve at least one of the many problems existing in the prior art. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a vascular bridging component.

[0006] Specifically, the present disclosure is achieved through the following technical solutions:

[0007] In a first aspect, an embodiment of the present disclosure provides a vascular bridging assembly for temporary hemostasis and recanalization bridging of a blood vessel, the vascular bridging assembly comprising:

[0008] A bridging body having a head end, a tail end away from the head end, and a bridging channel forming a through hole;

[0009] a support element, arranged throughout the bridge channel, having at least a deformable structure and a delivery channel that can be freely switched between contraction and expansion, wherein the delivery channel includes at least a first delivery channel;

[0010] The self-locking mechanism is separately arranged from the bridge body and is configured to lock the blood vessel and the bridge body tightly and self-lock, and comprises a locking part and an enabling part; wherein,

[0011] The head end includes a bridge portion with a gradually increasing diameter formed along its axial direction and a plurality of first clamping grooves arranged at intervals between the bridge portions, so as to be suitable for blood vessels of different diameters to be bridged to the head end and fixed to the outer periphery of the bridge portion by the clamping portion.

[0012] In some embodiments, the support element includes a support portion, a guide rod, and an end connection portion.

[0013] In some embodiments, the support portion includes a deformable portion having a cavity and a second clamping groove disposed on the outer periphery of the deformable portion, the deformable portion is configured to expand or contract when a medium is filled or removed, and in a contracted state, the deformable portion is suitable for passing through the bridge channel and out of the head end;

[0014] The guide rod is provided with the first delivery channel along its axial direction, the first delivery channel is communicated with the deformation part and is used for guiding the medium;

[0015] The terminal connection part is connected to the guide rod and is configured to supply or remove the medium.

[0016] In some embodiments, the support portion is a shuttle-shaped structure, including a central flow channel, and the deformation portion is arranged at the periphery of the central flow channel, wherein the central flow channel and the deformation portion are isolated from each other.

[0017] In some embodiments, the delivery channel further includes a second delivery channel, the second delivery channel is coaxially arranged inside the guide rod with the first delivery channel, and the second delivery channel is communicated with one end of the central flow channel.

[0018] In some embodiments, the terminal coupling portion is provided with a blocking portion for selectively preventing the fluid in the second delivery channel from flowing out through the terminal coupling portion.

[0019] In some embodiments, the clamping portion includes a pair of symmetrical clamping arms, a pair of pressing portions and a pivot pin, wherein the clamping arm includes a free end and a fixed end, and the fixed end is connected to the pressing portion.

[0020] In some embodiments, the clamping arm is approximately S-shaped, and the two clamping arms are hinged by the pivot pin to enclose a clamping space with adjustable space; the two pressing parts are arranged relative to each other and connected by the enabling part.

[0021] In some embodiments, the enabling portion includes a flexible sleeve and a self-locking spring located within the flexible sleeve.

[0022] In some embodiments, it also includes a limit groove and a positioning portion cooperating with the limit groove, wherein the limit groove is arranged on the inner wall of the bridging channel, and the positioning portion is arranged on the outer wall of the guide rod, for controlling the length of the support element extending out of the head end.

[0023] In a second aspect, the embodiment of the present disclosure provides a vascular bridging system, comprising a bridging body and a pair of vascular bridging components respectively located at two ends of the bridging body, wherein the bridging body comprises a bridging flow channel and is detachably connected to the vascular bridging component; wherein:

[0024] The vascular bridging component is the vascular bridging component described in any of the aforementioned technical solutions.

[0025] In some embodiments, wherein

[0026] The bridging body at least includes a first bridging joint and a second bridging joint, and the vascular bridging component includes a first vascular bridging component and a second vascular bridging component, wherein:

[0027] The first and second vascular bridging components are connected to the bridging body through the first and second bridging joints, respectively, and the bridging flow channel is connected to at least one of the bridging channel or the delivery channel; or,

[0028] Before the first and second vascular bridging components are connected to the bridging body through the first and second bridging joints, the support element is taken out through the bridging channel after shrinking and deforming.

[0029] According to the embodiments of the present disclosure, the existing vascular bridging devices have been solved, such as the complex structure, the unreliable fixation of blood vessels, and the inability to meet the bridging requirements of blood vessels of different diameters. The present disclosure sets the head end of the bridging body into a structure in which the diameter gradually increases along its axial direction, so that the bridging assembly can adapt to blood vessels of various sizes and meet the needs of different application scenarios; by designing a fixing method that cooperates with the clamping groove and the self-locking mechanism, the fixing effect is better, the blood vessel is not easy to fall off, and the risk of failure is reduced; by designing a support element that can freely switch between the two states of contraction and expansion, the blood vessel can be supported and fixed more quickly, the blood vessel can be effectively hemostatic and bridged, and the bridging efficiency can be improved.

[0030] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0032] Figure 1 is a schematic structural diagram of a blood vessel bridging assembly in one embodiment of the present disclosure;

[0033] Figure 2 is a structural perspective view of a supporting element in one embodiment of the present disclosure;

[0034] Figure 3 is a cross-sectional view of a vascular bridging assembly in one embodiment of the present disclosure;

[0035] Figure 4 is a structural perspective view of a self-locking mechanism in an embodiment of the present disclosure;

[0036] Figure 5 It is a plan view of a vascular bridging system in one embodiment of the present disclosure.

[0037] Reference numerals:

[0038] 10: bridging body; 20: supporting element; 30: self-locking mechanism; 11: head end; 12: tail end; 13: intermediate transition part; 14: bridging channel; 110: bridging part; 111: first clamping groove; 140: limiting groove; 21: supporting part; 22: guide rod; 23: terminal connection part; 210: deformation part; 211: second clamping groove; 212: central flow channel; 220: first delivery channel; 2 21: second delivery channel; 222: positioning part; 231: blocking part; 31: clamping part; 32: enabling part; 310: clamping arm; 311: pressing part; 312: pivot pin; 3101: free end; 3102: fixed end; 320: flexible sleeve; 321: self-locking spring; 100: vascular bridging assembly; 200: bridging body; 201: first bridging joint; 202: second bridging joint. DETAILED DESCRIPTION

[0039] The present disclosure will now be discussed with reference to several embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, rather than implying any limitation on the scope of the present disclosure.

[0040] As used herein, the term "including" and its variants are to be interpreted as open-ended terms meaning "including but not limited to"; the terms "embodiment" and "one embodiment" are to be interpreted as "at least one embodiment"; the term "another embodiment" is to be interpreted as "at least one other embodiment"; the terms "first", "second", etc. may refer to different or the same objects; the term "setting" is not limited to direct connection or indirect connection, nor is it limited to a specific connection method. Other explicit and implicit definitions may also be included below.

[0041] In the following description, some specific numerical values ​​or numerical ranges may be involved. It should be understood that these numerical values ​​and numerical ranges are merely exemplary, which may be helpful in putting the idea 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. According to specific application scenarios and requirements, these numerical values ​​or numerical ranges can be set separately.

[0042] As mentioned above, the existing vascular bridging device has a complex structure and cumbersome operation steps, which makes it inconvenient to use; the bridging component is not firmly fixed to the severed blood vessel, and it is easy to fall off, and the reliability is poor; in addition, it cannot adapt to blood vessels of different diameters, and the bridging adaptability is poor. The vascular bridging component and bridging system proposed in the embodiments of the present disclosure at least partially solve the above problems. Figures 1 to 5 The structure and working principle of the vascular bridging assembly and the bridging system according to the exemplary embodiments of the present disclosure are described.

[0043] like Figure 1-5 As shown, an embodiment of the present disclosure provides a blood vessel bridging assembly for temporary hemostasis and restoration of blood vessels. The blood vessel bridging assembly mainly includes a bridging body 10, a supporting element 20 and a self-locking mechanism 30.

[0044] Specifically:

[0045] like Figure 1 As shown, as the main structure of the vascular bridging component, the bridging body 10 disclosed in the present invention has a head end 11, a tail end 12 away from the head end 11, an intermediate transition portion 13 connecting the head end 11 and the tail end 12, and a bridging channel 14 forming a through hole.

[0046] The head end 11 includes a bridge portion 110 with a gradually increasing diameter formed along its axial direction and a plurality of first clamping grooves 111 arranged at intervals between the bridge portions 110. Exemplarily, the bridge portion 110 is formed as a truncated cone structure with a diameter from small to large and a smooth transition, so as to be suitable for blood vessels of different diameters to be smoothly sheathed and bridged thereon, and a plurality of first clamping grooves 111 are provided on the outer peripheral wall surface of the bridge portion 110 at intervals of a preset distance along the axial direction of the bridge portion 110. After the blood vessel is sheathed on the outer peripheral wall of the bridge portion 110, the blood vessel can be clamped and locked in the first clamping groove 111 by the self-locking mechanism 30.

[0047] The tail end 12 is connected to the head end 11 through the intermediate transition portion 13 for connection and fixation, for example, to achieve detachable fixation with other components. Exemplarily, the tail end 12 is formed with a screw connection portion.

[0048] The intermediate transition portion 13 is used to connect the head end 11 and the tail end 12, and a plurality of annular protrusions are formed on its outer wall surface. The diameter of the intermediate transition portion 13 is 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 tail end 12. Those skilled in the art should understand that in some specific scenarios, as needed, the intermediate transition portion 13 of the present disclosure can also be used to sheath certain blood vessels with larger diameters, and fix the blood vessels in the grooves between the annular protrusions through the self-locking mechanism 30; optionally, the annular protrusion can also be formed into a threaded structure for threading with different external structures.

[0049] like Figure 3 As shown, the bridge channel 14 is formed through the bridge body 10 in the axial direction, and is used for passing the support element 20 in or out. The bridge channel 14 can have a uniform aperture size, or a gradually decreasing aperture size from the tail end 12 to the head end 11, so that the wall thickness of the bridge body 10 is uniform, the bridge body 10 is lightened, and it is convenient to use.

[0050] According to the present disclosure, by improving the structure of the bridge body, the bridge assembly can adapt to blood vessel bridges of various sizes and can maintain the firmness and reliability of the bridge fixation.

[0051] The support element 20 of the present disclosure is arranged throughout the bridging channel 14 , and has at least a deformation structure and a delivery channel that can be freely switched between contraction and expansion, wherein the delivery channel includes at least a first delivery channel 220 .

[0052] The support element 20 disclosed in the present invention is configured to be able to extend into a predetermined depth inside a severed blood vessel to be bridged in a contracted state, and to support and fix the blood vessel to be bridged in an expanded state. 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 as the support element 20 penetrates deeper and expands, so that the blood vessel can be placed on the bridging portion 110 of the head end 11.

[0053] For example, the support element 20 of the present disclosure can guide a medium through the first delivery channel 220 to provide the support element 20 with the required deformation. For example, the medium can be a gas or liquid medium, specifically nitrogen, physiological saline, etc. The present disclosure does not specifically limit this.

[0054] According to an embodiment of the present disclosure, Figure 2As shown, the support element 20 includes a support portion 21, a guide rod 22 and a terminal connection portion 23. The support portion 21 includes a deformable portion 210 having a cavity and a second clamping groove 211 arranged on the outer periphery of the deformable portion 210. The deformable portion 210 has a certain wall thickness and is configured to expand or contract when filling or removing a medium. In the contracted state, the deformable portion 210 is suitable for passing through the bridge channel 14 from the head end 11.

[0055] Exemplarily, the support portion 21 can be a shuttle-shaped structure, mainly including a central flow channel 212, and the deformation portion 210 is arranged around the outer periphery of the central flow channel 212. The central flow channel 212 and the deformation portion 210 are isolated from each other, that is, the central flow channel 212 and the deformation portion 210 are not connected. When the cavity of the deformation portion 210 of the shuttle-shaped structure is filled with a medium, the deformation portion 210 undergoes bulging deformation, for example, expanding into a spherical shape. The second clamping groove 211 is arranged at the symmetrical center of the shuttle-shaped structure along the circumferential direction of the deformation portion 210, presenting an inwardly concave structure and having a depth. The second clamping groove 211 disclosed in the present invention can also be adapted to the self-locking mechanism 30 to achieve auxiliary clamping.

[0056] The deformation part 210 of the present disclosure can be made of medical polyurethane material. The present disclosure does not impose any special restrictions on the constituent materials of the deformation part. Ordinary technicians in this field should understand that any material that can meet the requirements of the deformation part of the present disclosure to achieve deformation conversion can be used in the present disclosure.

[0057] The guide rod 22 includes a shaft of a predetermined length, and a first delivery channel 220 and a second delivery channel 221 coaxially arranged with the first delivery channel 220 are arranged along its axial direction. The first delivery channel 220 is arranged as an annular channel on the periphery, and is communicated with the deformation part 210, and is used to guide the medium. The guide rod 22 of the present disclosure is connected to the deformation part 210, and the medium can be guided into the cavity of the deformation part 210 by the guide rod 22, for example, a fluid with a certain pressure is provided or removed to make the deformation part 210 expand or contract; further, the second delivery channel 221 is a central hole structure, one end of which is communicated with one end of the central flow channel 212 of the support part 21, and is used for drug delivery or temporary recanalization of blood vessels. For example, a drug solution (such as anticoagulant drugs such as heparin) can be injected into the second delivery channel 221 through the terminal connecting part 23 and enter the blood vessel through the central flow channel 212 to prevent thrombosis.

[0058] The terminal connecting portion 23 is connected to the guide rod 22, and includes a first interface (not shown) connected to the first delivery channel 220, and a second interface (not shown) connected to the second delivery channel 221, and the first interface and the second interface are respectively configured to supply or remove the medium and inject the drug solution into the second delivery channel 221.

[0059] Furthermore, the terminal connection part 23 is also provided with a blocking part 231, which can be used as a one-way valve function to selectively prevent the fluid in the second delivery channel 221 from flowing out through the terminal connection part 23. For example, when the vascular bridging component of the present disclosure is used to stop bleeding of a blood vessel, the blocking part 231 can be kept in a closed state to prevent the blood, liquid medicine and other fluids in the blood vessel from flowing out of the terminal connection part 23 through the second delivery channel 221; when the vascular bridging component of the present disclosure is used as a bridging system as described below, when the vascular bridging component and the bridging body are assembled, the blocking part 231 can be opened by a protruding strip arm provided in the bridging joint (e.g., the first bridging joint, the second bridging joint) of the bridging system, and kept in a normally open state, so as to ensure that the two end blood vessels bridged by the bridging system form a smooth temporary recanalization channel through the bridging system.

[0060] According to an embodiment of the present disclosure, Figure 4 As shown, the self-locking mechanism 30 of the present invention is separately arranged from the bridging body 10. The separate arrangement here can be understood as the self-locking mechanism 30 being a part of the bridging assembly, and the bridging split body 10 being independently designed and configured to clamp the blood vessel and the bridging body 10 for self-locking. Preferably, the self-locking mechanism 30 can be adapted to the first clamping groove 111 of the bridging body 10, and the blood vessel to be bridged can be clamped and fixed in the first clamping groove 111.

[0061] The self-locking mechanism 30 of the present disclosure may include a clamping portion 31 and an enabling portion 32 connected to the clamping portion 31 and capable of automatically locking the clamping portion 31 .

[0062] The clamping portion 31 may be composed of a pair of symmetrical clamping arms 310, a pair of pressing portions 311, and a pivot pin 312. The clamping arm 310 includes a free end 3101 and a fixed end 3102, and the fixed end 3102 is connected to the pressing portion 311.

[0063] like Figure 3 As shown, the clamping arm 310 of the present invention is designed to be approximately S-shaped, and the two clamping arms 310 are hinged by a pivot pin 312 to enclose a clamping space with adjustable space. For example, in a free state, the free ends 3101 of the two clamping arms 310 can abut against each other, and the clamping space is enclosed to form an approximately circular shape. Under the action of external force, the opening of the clamping space can be adjusted.

[0064] A pair of pressing parts 311 are respectively connected to the fixed ends 3102 of the clamping arms 310, so that the two pressing parts 311 are arranged relative to each other at a preset interval, and the two pressing parts 311 are respectively connected to the first end and the second end of the enabling part 32. In a natural state, the enabling part 32 can provide a force to the two pressing parts 311, so that the free ends 3101 of the two clamping arms 310 always maintain abutment state; when the two pressing parts 311 are applied with external forces in relative directions, the opening of the clamping space can be adjusted to be suitable for the pair of clamping arms 310 to open and clamp the clamped object, and at the same time, the enabling part 32 can deform and store energy, and when the external force applied to the pressing parts 311 disappears, the enabling part 32 releases energy to provide a reliable clamping force, so that the clamping arms 310 can rotate and reset along the pivot pin 312 to clamp the clamped object.

[0065] According to the embodiments of the present disclosure, those skilled in the art should understand that the self-locking mechanism of the present disclosure is not only applicable to the first clamping groove, but also to the second clamping groove. Of course, according to the needs of the actual application occasion, the grooves between the annular protrusions on the intermediate transition part can also be adapted. Therefore, the self-locking mechanism of the present disclosure can be set to various sizes and specifications according to the needs of the actual application scene to meet the application of multiple occasions.

[0066] In some embodiments, the enabling portion 32 may include a flexible sleeve 320 and a self-locking spring 321 located in the flexible sleeve 320. In this embodiment, mounting grooves, such as circular grooves, are respectively provided on the opposite surfaces of the two pressing portions 311, and one end of the self-locking spring 321 is connected to the mounting groove of one of the pressing portions 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, which is greater than the preset spacing formed between the two pressing portions 311, so that the self-locking mechanism 30 can always be in an energy storage state, that is, the self-locking spring 321 should be kept in a compressed state, and the two ends of the flexible sleeve 320 are respectively embedded in the mounting grooves of the pressing portion 311. Preferably, the flexible sleeve 320 is in a natural state, that is, in a natural state where the pressing portion 311 of the self-locking mechanism 30 is not subjected to external force, and the flexible sleeve 320 does not store energy, that is, the natural length of the flexible sleeve 320 is equal to the aforementioned preset spacing. The flexible sleeve 320 disclosed herein may be made of materials such as medical rubber and silicone.

[0067] The self-locking mechanism used in the present invention can ensure that the blood vessel is reliably and firmly held in the bridging body, and the self-locking mechanism has a simple structure and is easy to operate, which can meet the doctor's needs of using the self-locking mechanism to quickly lock the blood vessel in an emergency. Among them, the clamping arm part adopts an arc structure design to avoid damage to the inside and outside of the blood vessel; the combination structure of the flexible sleeve 320 and the self-locking spring 321 can protect the self-locking spring through the flexible sleeve to prevent the self-locking spring from failing due to long-term contact with the external environment, further improving the stability and reliability of the self-locking mechanism structure.

[0068] According to an embodiment of the present disclosure, the blood vessel bridging component further includes a limiting groove 140 and a positioning portion 222 matched with the limiting groove 140. The limiting groove 140 is arranged on the inner wall of the bridging channel 14, and the positioning portion 222 is arranged on the outer wall of the guide rod 22, and is used to control the length of the support element 20 extending out of the head end 11. Exemplarily, the limiting groove 140 includes two or more, which are evenly opened on the inner wall of the bridging channel 14, and correspondingly, the positioning portion 222 may also include two or more, and may be evenly arranged on the outer wall surface of the guide rod 22 in the form of long strips, and is used to control the length of the support element 20 extending out of the bridging body 10 to limit the depth of the support portion 21 inserted into the blood vessel.

[0069] According to another embodiment of the present disclosure, a vascular bridging system is provided.

[0070] like Figure 5 As shown, the vascular bridging system includes a bridging body 200 and a pair of vascular bridging components 100 respectively located at both ends of the bridging body 200, the bridging body 200 includes a bridging flow channel, and the bridging body and the vascular bridging component 100 are arranged to be detachably connected; wherein, the vascular bridging component is the vascular bridging component described in the above embodiment. Since the structure and components of the vascular bridging component are the same as those of the vascular bridging component described in the above embodiment, the present disclosure will not repeat the specific structure, composition and function of the vascular bridging component.

[0071] In some embodiments, the bridging body 200 of the bridging system includes at least a first bridging joint 201 and a second bridging joint 202, and the number of the vascular bridging components 100 is two, namely, a first vascular bridging component and a second vascular bridging component, wherein:

[0072] The first and second vascular bridging components are connected to the bridging body 200 through the first and second bridging joints 201 and 202, respectively, and the bridging flow channel is connected to at least one of the bridging channel or the delivery channel. In this embodiment, the two ends of the blood vessel to be bridged are respectively connected and connected to the first vascular bridging component and the second vascular bridging component, and are connected through the bridging body 200 to form a first temporary re-opening flow channel. Among them, the first temporary re-opening flow channel can be composed of the central flow channel of the first vascular bridging component, the second delivery channel of the first vascular bridging component, the bridging flow channel of the bridging body 200, the second delivery channel of the second vascular bridging component, and the central flow channel of the first vascular bridging component.

[0073] Alternatively, before the first and second vascular bridging components are connected to the bridging body 200 through the first and second bridging joints 201 and 202, the support element can be taken out through the bridging channel after shrinking and deforming. Then the tail ends of the first and second bridging components are connected to the first and second bridging joints, such as screwing or other detachable connection methods to form another structure of the second temporary re-opening flow channel. The second temporary re-opening flow channel can be composed of the bridging channel of the first vascular bridging component, the bridging flow channel of the bridging body 200, and the bridging channel of the second vascular bridging component. Compared with the first temporary re-opening flow channel of the aforementioned embodiment, the second temporary re-opening flow channel has a larger circulation tube diameter and thus has a larger circulation volume, but the premise for achieving this effect is that the support element needs to be taken out in advance when assembling the bridging system. Those of ordinary skill in the art should understand that one of the methods can be reasonably selected for application according to the needs of the actual application.

[0074] The description of the embodiments herein and any reference to directions and orientations are only for the convenience of description and are not to be construed as any limitation on the scope of protection of the present invention. The description of the preferred embodiments may involve combinations of features, which may exist independently or in combination, and the present invention is not particularly limited to the preferred embodiments. The scope of the present invention is defined by the claims.

[0075] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vascular bridging assembly for temporary hemostasis and recanalization bridging of blood vessels, characterized in that: The vascular bridging assembly comprises: A bridging body (10) comprising 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 throughout the bridge channel (14), and having at least a deformable structure and a delivery channel that can be freely switched between contraction and expansion, wherein the delivery channel at least includes a first delivery channel (220); The self-locking mechanism (30) is separately arranged from the bridging body (10), and is configured to clamp the blood vessel and the bridging body (10) to achieve self-locking, and comprises a clamping portion (31) and an enabling portion (32); wherein: The head end (11) comprises a bridging portion (110) with a gradually increasing diameter formed along its axial direction and a plurality of first clamping grooves (111) arranged at intervals between the bridging portions (110), so as to be suitable for blood vessels of different diameters to be bridged to the head end (11) and fixed to the periphery of the bridging portion (110) by the clamping portion (31); The support element (20) comprises a support portion (21), a guide rod (22) and a terminal connection portion (23); The support portion (21) comprises a deformable portion (210) having a cavity and a second clamping groove (211) arranged on the outer periphery of the deformable portion, the deformable portion (210) being configured to expand or contract when a medium is filled or removed, and in a contracted state, the deformable portion (210) is suitable for passing through the bridge channel (14) and out of the head end (11); The guide rod (22) is provided with the first delivery channel (220) along its axial direction, and the first delivery channel (220) is in communication with the deformation portion (210) and is used to guide the medium; The terminal connection portion (23) is connected to the guide rod (22) and is configured to supply or remove the medium.

2. The vascular bridging assembly according to claim 1, characterized in that: The support portion (21) is a shuttle-shaped structure, comprising a central flow channel (212), and the deformation portion (210) is arranged on 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 bridging assembly according to claim 2, characterized in that: The delivery channel further comprises a second delivery channel (221), wherein the second delivery channel (221) is coaxially arranged with the first delivery channel (220) inside the guide rod (22), and the second delivery channel (221) is in communication with one end of the central flow channel (212).

4. The vascular bridging assembly according to claim 3, characterized in that: The terminal connecting portion (23) is provided with a blocking portion (231) for selectively preventing the fluid in the second delivery channel (221) from flowing out through the terminal connecting portion (23).

5. The vascular bridging assembly according to any one of claims 1 to 4, characterized in that: The clamping portion (31) comprises a pair of symmetrically shaped clamping arms (310), a pair of pressing portions (311) and a pivot pin (312), wherein the clamping arm (310) comprises a free end (3101) and a fixed end (3102), and the fixed end (3102) is connected to the pressing portion (311).

6. The vascular bridging assembly according to claim 5, characterized in that: in, The clamping arms (310) are approximately S-shaped in structure, and the two clamping arms (310) are hingedly connected via the pivot pin (312) to enclose a clamping space with adjustable space; the two pressing portions (311) are arranged relative to each other and are connected via the enabling portion (32).

7. The vascular bridging assembly according to claim 6, characterized in that: The enabling portion (32) comprises a flexible sleeve (320) and a self-locking spring (321) located inside the flexible sleeve (320).

8. The vascular bridging assembly according to any one of claims 1 to 3, characterized in that: It also includes a limiting groove (140) and a positioning portion (222) that cooperates with the limiting groove (140), wherein the limiting groove (140) is arranged on the inner wall of the bridging channel (14), and the positioning portion (222) is arranged on the outer wall of the guide rod (22) for controlling the length of the supporting element (20) extending out of the head end (11).

Images