Clamping device and clamping method for stripping fibrosis substances in artificial blood vessel

Abstract

The invention relates to a clamping device and a clamping method for stripping fibrosis substances in an artificial blood vessel, and relates to the technical field of medical instruments. Comprising a clamping base body, a pushing assembly and a clamping piece. A wire guide hole is formed in the clamping base body, a containing space is formed in the clamping base body, and the wire guide hole is communicated with the containing space; the pushing assembly is arranged in the accommodating space; the clamping piece is arranged at one end of the pushing assembly and located at the end, provided with the wire guide hole, of the clamping base body. Wherein the pushing assembly is used for pushing the clamping piece to extend out of or enter the guide wire hole, and the clamping opening of the clamping piece is gradually expanded while the clamping piece gradually extends out of the guide wire hole. According to the clamping device, the pushing assembly is pushed, the clamping piece can be pulled into the containing space along with the pushing assembly, in the process that the clamping piece enters the containing space, the clamping opening of the clamping piece can be gradually closed till the fibrosis substance is clamped and fastened, and the problem that a special clamping device for taking the fibrosis substance out of the body is lacked is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a clamping device and a clamping method for removing fibrotic substances in artificial blood vessels. Background Art

[0002] Constructing an arteriovenous fistula using an artificial blood vessel is a surgical procedure aimed at connecting an artificial blood vessel to a patient's artery and vein to create a blood flow channel suitable for hemodialysis. This channel can provide sufficient blood flow to ensure that the patient can receive effective hemodialysis treatment.

[0003] However, over time, this fistula may become occluded, usually due to thrombosis. For the treatment of occlusion, common methods include balloon dilation or thrombectomy. But in the face of refractory occlusion, there may be intravascular fibrosis, and this fibrotic substance may not be crushed by balloon dilation. In this case, other measures need to be taken to remove these fibrotic substances.

[0004] Regarding the above related technologies, there is a problem of lacking a dedicated clamping device for removing fibrotic substances from the body. Summary of the Invention

[0005] In view of the deficiencies of the above prior art, the purpose of the present invention is to provide a clamping device and a clamping method for removing fibrotic substances in artificial blood vessels, aiming to solve the problem of lacking a dedicated clamping device for removing fibrotic substances from the body.

[0006] A clamping device and a clamping method for removing fibrotic substances in artificial blood vessels provided by the present application adopt the following technical solutions: A clamping device for removing fibrotic substances in artificial blood vessels, comprising:

[0007] A clamping base body, on which a guide wire hole is provided, and an accommodation space is formed in the clamping base body, and the guide wire hole communicates with the accommodation space;

[0008] A pushing assembly, which is arranged in the accommodation space;

[0009] A clamping member, which is arranged at one end of the pushing assembly, and the clamping member is located at one end of the clamping base body where the guide wire hole is provided;

[0010] Wherein, the pushing assembly is used to push the clamping member to extend out of or enter through the guide wire hole, and while the clamping member gradually extends out of the guide wire hole, the clamping opening of the clamping member gradually expands.

[0011] Optionally, the pushing assembly includes a stretching member, a guide wire and a first elastic member;

[0012] A sliding hole is provided on the clamping base body, and the sliding hole communicates with the accommodation space;

[0013] The stretching member is arranged on the guide wire, and a part of the stretching member extends out of the sliding hole. One end of the guide wire is connected to the clamping member, and the stretching member is used to pull the clamping member into the guide wire hole;

[0014] The first elastic member is arranged on the outer periphery of the guide wire, and the first elastic member has elastic potential energy for pushing the clamping member out of the guide wire hole.

[0015] Optionally, the clamping base body includes a holding member and an inserting member, and the inserting member is arranged at one end of the holding member;

[0016] The accommodation space includes a first accommodation space and a second accommodation space. The first accommodation space is formed in the holding member, the second accommodation space is formed in the inserting member, and the first accommodation space and the second accommodation space communicate with each other;

[0017] The sliding hole is arranged on the holding member, and the sliding hole communicates with the first accommodation space;

[0018] The first elastic member is arranged in the inserting member;

[0019] The guide wire hole is arranged at one end of the inserting member away from the holding member, and the guide wire hole communicates with the second accommodation space. The inserting member is used to be inserted into the body together with the clamping member.

[0020] Optionally, the inserting member includes an inserting part and a recovery part. One end of the inserting part is connected to the holding member, and the other end is connected to the recovery part. The guide wire hole is arranged at one end of the recovery part away from the inserting part;

[0021] The second accommodation space includes an inserting space and a recovery space. The inserting space is formed in the inserting part, the recovery space is formed in the recovery part, the inserting space communicates with the first accommodation space and the recovery space respectively, and the radial diameter of the recovery part is larger than the radial diameter of the inserting part;

[0022] The guide wire hole communicates with the recovery space;

[0023] The first elastic member is arranged in the recovery space.

[0024] Optionally, a guiding inclined surface for guiding the clamping member into the inserting space is arranged on the side wall of the orifice of the guide wire hole.

[0025] Optionally, the clamping member includes a first clamping arm, a second clamping arm, and a second elastic member. One end of the first clamping arm and one end of the second clamping arm are hinged. The second elastic member is disposed between the first clamping arm and the second clamping arm, and the second elastic member has an elastic potential energy for opening the first clamping arm and the second clamping arm.

[0026] The guide wire is connected to the hinged portion of one end of the first clamping arm and one end of the second clamping arm.

[0027] Optionally, limiting ridges are provided on the side walls on both sides of the sliding hole, limiting grooves are provided on both sides of the stretching member, and the limiting ridges and the limiting grooves are slidably arranged.

[0028] Optionally, the stretching member includes a stretching body and a pushing ring. The stretching body is disposed on the guide wire;

[0029] The pushing ring is disposed on the stretching body, and the pushing ring surrounds the outer periphery of the clamping base.

[0030] Optionally, a stabilizing ring is provided at one end of the holding member away from the implanting member.

[0031] A clamping method for removing fibrotic substances in an artificial blood vessel, which is applied to the clamping device for removing fibrotic substances in an artificial blood vessel as described in any one of the above. The clamping member includes a first clamping arm, a second clamping arm, and a second elastic member. One end of the first clamping arm and one end of the second clamping arm are hinged. The second elastic member is disposed between the first clamping arm and the second clamping arm, and the second elastic member has an elastic potential energy for opening the first clamping arm and the second clamping arm;

[0032] The pushing assembly is connected to the hinged portion of one end of the first clamping arm and one end of the second clamping arm;

[0033] The method includes:

[0034] Placing the clamping member into the patient's body, and placing the fibrotic substance between the first clamping arm and the second clamping arm;

[0035] Moving the pushing assembly past the clamping wire to control the clamping member to clamp the fibrotic substance.

[0036] Compared with the prior art, the embodiments of the present invention have the following advantages:

[0037] Before applying an external force to the clamping device for removing fibrotic substances in an artificial blood vessel, the clamping member is placed outside, and the clamping opening of the clamping member is in an open state.

[0038] After placing the clamping member into the body, after determining the fibrotic substance, the pushing assembly is pushed, and the clamping member will be pulled into the accommodating space together with the pushing assembly. During the process of the clamping member entering the accommodating space, due to the obstruction of the orifice of the wire guide hole, the clamping opening of the clamping member will gradually close until the fibrotic substance is firmly clamped. Then, the clamping device for removing the fibrotic substance in the artificial blood vessel is taken out of the body, and the fibrotic substance can be removed from the patient's body, solving the problem of the lack of a dedicated clamping device for removing the fibrotic substance from the body. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0040] Figure 1 is a schematic diagram of the overall structure of the clamping device for removing fibrotic substances in the artificial blood vessel in the embodiment of the present application;

[0041] Figure 2 is a cross-sectional view of the clamping device for removing fibrotic substances in the artificial blood vessel in the embodiment of the present application;

[0042] Figure 3 is Figure 2 an enlarged view of part A in

[0043] Figure 4 is Figure 2 an enlarged view of part B in

[0044] Figure 5 is a schematic diagram of the structure of the clamping member of the clamping device for removing fibrotic substances in the artificial blood vessel in the embodiment of the present application;

[0045] Figure 6 is a schematic diagram of the structure of the stretching member of the clamping device for removing fibrotic substances in the artificial blood vessel in the embodiment of the present application;

[0046] Figure 7 is a flowchart of the clamping method for removing fibrotic substances in the artificial blood vessel in the embodiment of the present application.

[0047] Description of the reference numerals:

[0048] 1. Clamping base; 11. Holding member; 111. Sliding hole; 1111. Limiting rib; 12. Insertion member; 121. Insertion portion; 122. Recovery portion; 1221. Guide wire hole; 1221a. Guide inclined surface; 13. Stabilizing ring; 2. Pushing assembly; 21. Tensile member; 211. Tensile body; 2111. Limiting groove; 212. Pushing ring; 22. Guide wire; 23. First elastic member; 3. Clamping member; 31. First clamping arm; 311. First clamping mouth; 312. First connecting portion; 32. Second clamping arm; 321. Second clamping mouth; 322. Second connecting portion; 4. Accommodating space; 41. First accommodating space; 42. Second accommodating space; 421. Insertion space; 422. Recovery space. Detailed implementation manner

[0049] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0050] The following further details the present application in conjunction with the accompanying drawings of the specification.

[0051] The embodiment of the present application discloses a clamping device and a clamping method for removing fibrotic substances in artificial blood vessels.

[0052] As Figure 1 , Figure 2 and Figure 3 shown, a clamping device for removing fibrotic substances in artificial blood vessels includes a clamping base 1, a pushing assembly 2 and a clamping member 3. A guide wire hole 1221 is provided on the clamping base 1, and an accommodating space 4 is formed inside the clamping base 1. The guide wire hole 1221 communicates with the accommodating space 4; the pushing assembly 2 is arranged in the accommodating space 4; the clamping member 3 is arranged at one end of the pushing assembly 2, and the clamping member 3 is located at one end of the clamping base 1 where the guide wire hole 1221 is provided; wherein, the pushing assembly 2 is used to push the clamping member 3 to extend out or enter from the guide wire hole 1221. While the clamping member 3 gradually extends out of the guide wire hole 1221, the clamping mouth of the clamping member 3 gradually expands.

[0053] Before applying an external force to the clamping device for removing fibrotic substances in artificial blood vessels, the clamping member 3 is placed outside, and the clamping mouth of the clamping member 3 is in an open state.

[0054] Afterwards, the clamping member 3 is placed into the body. After the fibrotic substance is identified, the pushing assembly 2 is pushed. The clamping member 3 will be pulled into the accommodation space 4 together with the pushing assembly 2. During the process of the clamping member 3 entering the accommodation space 4, due to the blockage of the orifice of the wire guide hole 1221, the clamping opening of the clamping member 3 will gradually close until the fibrotic substance is firmly clamped. Afterwards, the clamping device for removing the fibrotic substance in the artificial blood vessel is taken out of the body, and the fibrotic substance can be removed from the patient's body, solving the problem of the lack of a dedicated clamping device for removing the fibrotic substance from the body.

[0055] As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, the pushing assembly 2 includes a stretching member 21, a wire guide 22 and a first elastic member 23; a sliding hole 111 is provided on the clamping base 1, and the sliding hole 111 communicates with the accommodation space 4; the stretching member 21 is arranged on the wire guide 22, and part of the stretching member 21 extends out of the sliding hole 111. One end of the wire guide 22 is connected to the clamping member 3, and the stretching member 21 is used to pull the clamping member 3 into the wire guide hole 1221; the first elastic member 23 is arranged on the outer periphery of the wire guide 22, and the first elastic member 23 has an elastic potential energy for pushing the clamping member 3 out of the wire guide hole 1221.

[0056] Specifically, the shape of the clamping base 1 is rod-shaped, the shape of the accommodation space 4 is a rod-shaped space similar to the outer surface of the clamping base 1, the wire guide hole 1221 is arranged at one end of the clamping base 1 for being placed into the patient's body, and the wire guide hole 1221 communicates with the accommodation space 4.

[0057] The wire guide 22 is located in the accommodation space 4, and the wire guide 22 is coaxially arranged with the clamping base 1.

[0058] The clamping member 3 is arranged at one end of the wire guide 22, and the clamping member 3 is located near the wire guide hole 1221 and extends out of or into the wire guide hole 1221 under the action of the first elastic member 23 and the stretching member 21.

[0059] The first elastic member 23 is a telescopic spring, and the first elastic member 23 is arranged near the end of the wire guide 22 connected to the clamping member 3.

[0060] When the stretching member 21 is pushed to move in a direction away from the clamping member 3 (which is reflected as pushing the stretching member 21 to the right in Figure 2 ), the stretching member 21 will drive the wire guide 22, and then the wire guide 22 drives the clamping member 3 to move to the right, so that it gradually enters the accommodation space 4 through the wire guide hole 1221. During the process of the clamping member 3 entering the accommodation space 4, the opening of the clamping member 3 will gradually close, so that the fibrotic substance can be clamped.

[0061] When the clamping member 3 moves to the right and enters the accommodation space 4, the first elastic member 23 located on the right side of the clamping member 3 will be compressed. After the clamping member 3 clamps the fibrotic substance and successfully removes it from the body, at this time, the pushing force on the stretching member 21 is released. The compressed first elastic member 23 will return to its original state under the action of elastic potential energy. At this time, the clamping member 3 will extend out of the wire guide hole 1221 to the outside again. After the opening of the clamping member 3 is released from the restriction of the accommodation space 4, it will also reopen to wait for the next operation of removing the fibrotic substance. The overall operation is simple and convenient, solving the problem of the lack of a special clamping device for removing fibrotic substances from the body.

[0062] As Figure 1 and Figure 2 shown, the clamping base 1 includes a holding member 11 and an insertion member 12. The insertion member 12 is provided at one end of the holding member 11; the accommodation space 4 includes a first accommodation space 41 and a second accommodation space 42. The first accommodation space 41 is formed in the holding member 11, the second accommodation space 42 is formed in the insertion member 12, and the first accommodation space 41 and the second accommodation space 42 are communicated; the sliding hole 111 is provided on the holding member 11, and the sliding hole 111 is communicated with the first accommodation space 41; the first elastic member 23 is provided in the insertion member 12; the wire guide hole 1221 is provided at the end of the insertion member 12 away from the holding member 11, and the wire guide hole 1221 is communicated with the second accommodation space 42. The insertion member 12 is used to be inserted into the body together with the clamping member 3.

[0063] Specifically, the insertion member 12 is used to be inserted into the patient's body together with the clamping member 3, and the holding member 11 is used to facilitate the operator to hold the clamping device for removing fibrotic substances in the artificial blood vessel for operation.

[0064] To facilitate the operator's holding and prevent the cross-sectional area of the insertion member 12 from being too large and causing secondary damage to the wound, the cross-sectional area of the holding member 11 is larger than the cross-sectional area of the insertion member 12.

[0065] The guide wire 22 penetrates through the first accommodation space 41 and the second accommodation space 42.

[0066] It should be noted that the insertion part 121 can be a soft tube or a hard tube, and different textures of the insertion part 121 can be selected according to needs.

[0067] For example, if the position of the fibrotic substance to be removed is relatively deep and the path to reach this position is relatively tortuous, then a soft tube insertion part 121 can be selected for the operation of removing the fibrotic substance.

[0068] Or, if the position of the fibrotic substance to be removed is relatively shallow and the path to reach this position is relatively straight, then a hard tube insertion part 121 can be selected for the operation of removing the fibrotic substance.

[0069] As Figure 1 and Figure 2 shown, the implant 12 includes an implanting portion 121 and a retrieving portion 122. One end of the implanting portion 121 is connected to the holding member 11, and the other end is connected to the retrieving portion 122. The guide wire hole 1221 is provided at one end of the retrieving portion 122 away from the implanting portion 121; the second accommodating space 42 includes an implanting space 421 and a retrieving space 422. The implanting space 421 is formed inside the implanting portion 121, and the retrieving space 422 is formed inside the retrieving portion 122. The implanting space 421 communicates with the first accommodating space 41 and the retrieving space 422 respectively. The radial diameter of the retrieving portion 122 is larger than that of the implanting portion 121; the guide wire hole 1221 communicates with the retrieving space 422; the first elastic member 23 is disposed inside the retrieving space 422.

[0070] Specifically, since the first elastic member 23 is disposed inside the retrieving space 422, and the clamping member 3 also enters the retrieving space 422 through the guide wire hole 1221, in order to reserve space for accommodating the first elastic space and the clamping member 3, the size of the retrieving space 422 is slightly larger than that of the implanting space 421.

[0071] When the stretching member 21 is pushed to move in a direction away from the clamping member 3, the stretching member 21 will drive the guide wire 22, and then the guide wire 22 will drive the clamping member 3 to move to the right, and thus gradually enter the retrieving space 422 through the guide wire hole 1221. During the process of the clamping member 3 entering the accommodating space 4, the opening of the clamping member 3 will gradually close, so that the fibrotic substance can be clamped.

[0072] Since the size of the retrieving space 422 is slightly larger than that of the implanting space 421, the right end of the first elastic member 23 will abut against the inner wall of the retrieving portion 122. When the clamping member 3 moves to the right and enters the retrieving space 422, the first elastic member 23 located on the right side of the clamping member 3 will abut against the inner wall of the retrieving portion 122 and be compressed. When the clamping member 3 clamps the fibrotic substance and is successfully removed from the body, at this time, the pushing on the stretching member 21 is released, and the compressed first elastic member 23 will return to its original state under the action of elastic potential energy. At this time, the clamping member 3 will extend out of the guide wire hole 1221 to the outside again. After the opening of the clamping member 3 is released from the restriction of the accommodating space 4, it will also open again to wait for the next operation of removing the fibrotic substance. The overall operation is simple and convenient, solving the problem of the lack of a special clamping device for removing fibrotic substances from the body.

[0073] As Figure 1 、 Figure 2 and Figure 3 shown, a guiding inclined surface 1221a for guiding the clamping member 3 to enter the implanting space 421 is provided on the side wall of the orifice of the guide wire hole 1221.

[0074] Specifically, the arrangement of the guiding inclined surface 1221a makes the overall shape of the inner wall of the guide wire hole 1221 conical. As the clamping member 3 is pulled into the recovery space 422 under the action of the guide wire 22, the periphery of the clamping member 3 will be abutted by the guiding inclined surface 1221a and a force towards the center to close will be applied, thus facilitating the clamping member 3 to close and enter the recovery space 422 under the action of the guide wire 22.

[0075] As Figure 1 , Figure 2 , Figure 3 and Figure 5 shown, the clamping member 3 includes a first clamping arm 31, a second clamping arm 32 and a second elastic member. One end of the first clamping arm 31 and one end of the second clamping arm 32 are hinged. The second elastic member is arranged between the first clamping arm 31 and the second clamping arm 32, and the second elastic member has an elastic potential energy for opening the first clamping arm 31 and the second clamping arm 32; the guide wire 22 is connected to the hinge joint of one end of the first clamping arm 31 and one end of the second clamping arm 32.

[0076] Specifically, the first clamping arm 31 includes a first clamping mouth 311 and a first connecting portion 312. The first clamping mouth 311 is arranged at one end of the first connecting portion 312. The second clamping arm 32 includes a second clamping mouth 321 and a second connecting portion 322. The second clamping mouth 321 is arranged at one end of the second connecting portion 322. The other end of the first connecting portion 312 and the other end of the second connecting portion 322 are hinged.

[0077] The second elastic member is a spring, and the second elastic member is arranged at the hinge joint of the first connecting portion 312 and the second connecting portion 322. Under the action of the second elastic member, when the clamping member 3 is not stressed, the clamping member 3 is in an open state, that is, the included angle between the first clamping arm 31 and the second clamping arm 32 is greater than zero degrees.

[0078] When the clamping member 3 is pulled into the recovery space 422 by the guide wire 22, the first clamping arm 31 and the second clamping arm 32 will gradually close under the extrusion of the inner wall of the guide wire hole 1221, so as to stably clamp the fibrotic substance.

[0079] When the clamping member 3 is pushed out of the guide wire hole 1221 by the first elastic member 23, the first clamping arm 31 and the second clamping arm 32 will reopen under the elastic potential energy of the second elastic member to wait for the next operation of removing the fibrotic substance.

[0080] As Figure 1 , Figure 2 , Figure 4 and Figure 6As shown, limiting ridges 1111 are provided on the side walls on both sides of the sliding hole 111, limiting grooves 2111 are provided on both sides of the stretching member 21, and the limiting ridges 1111 and the limiting grooves 2111 are slidably arranged.

[0081] Specifically, the provision of the limiting ridges 1111 and the limiting grooves 2111 realizes the limitation of the stretching member 21, and can improve the stability of the sliding fit between the stretching member 21 and the sliding hole 111.

[0082] As Figure 1 、 Figure 2 、 Figure 4 and Figure 6 shown, the stretching member 21 includes a stretching body 211 and a pushing ring 212. The stretching body 211 is arranged on the guide wire 22; limiting grooves 2111 are provided on both sides of the stretching body 211; the pushing ring 212 is arranged on the stretching body 211, and the pushing ring 212 is arranged around the outer periphery of the holding member 11.

[0083] Specifically, a plurality of sliding holes 111 are provided on the circumferential surface of the outer surface of the holding member 11, and parts of the stretching body 211 respectively extend out to the outside from the respective sliding holes 111.

[0084] In this embodiment, two sliding holes 111 are provided, and the two sliding holes 111 are oppositely arranged on the upper and lower surfaces of the holding member 11.

[0085] The pushing ring 212 is coaxially arranged with the clamping base body 1, and the inner surface of the pushing ring 212 is respectively connected to the parts of the stretching body 211 that extend out to the outside.

[0086] The operator can push the pushing ring 212 to move the stretching member 21 in a direction away from the clamping member 3, so as to promote the gradual closing of the opening of the clamping member 3, thereby clamping the fibrotic substance. The stretching member 21 is convenient to set up, which is convenient for medical staff to pull the stretching member 21.

[0087] As Figure 1 shown, a stabilizing ring 13 is provided at one end of the holding member 11 away from the implanting member 12.

[0088] Specifically, when medical staff perform a clamping operation by operating the present patent application, the thumb and middle finger of the medical staff are inserted into the stabilizing ring 13 for fixation, and then the index finger of the medical staff presses against the outer edge of the pushing ring 212 to move in a direction away from the clamping member 3, thereby controlling the gradual closing of the opening of the clamping member 3 to clamp the fibrotic substance.

[0089] With the coordinated operation of the stabilizing ring 13 and the pushing ring 212, medical staff can not only perform the operation of clamping fibrotic substances at one end of the hand far from the clamping member 3, avoiding direct contact between the hands of medical staff and patients, but also, since the thumb and middle finger will hook into the stabilizing ring 13, compared with the operation of holding the entire palm on the outer wall of the holding member 11, it can avoid slipping when applying force to control the movement of the stretching member 21 in the direction away from the clamping member 3, thus affecting the smooth progress of the operation of clamping fibrotic substances.

[0090] Meanwhile, with the setting of the stabilizing ring 13, when the clamping device for removing fibrotic substances in the artificial blood vessel has completed the clamping of the fibrotic substances, if the insertion part 121 is inserted deep into the patient's body and it is not easy to remove the insertion part 121 from the patient's body through the holding member 11, or if slipping occurs during the process of pulling out the insertion part 121 from the patient's body through the holding member 11, the insertion part 121 can be conveniently removed from the patient's body by hooking the stabilizing ring 13.

[0091] As Figure 7 shown, a clamping method for removing fibrotic substances in an artificial blood vessel is applied to any one of the clamping devices for removing fibrotic substances in an artificial blood vessel described above. The clamping member 3 includes a first clamping arm 31, a second clamping arm 32 and a second elastic member. One end of the first clamping arm 31 is hinged to one end of the second clamping arm 32. The second elastic member is arranged between the first clamping arm 31 and the second clamping arm 32, and the second elastic member has an elastic potential energy for opening the first clamping arm 31 and the second clamping arm 32; the pushing assembly 2 is connected to the hinge joint of one end of the first clamping arm 31 and one end of the second clamping arm 32;

[0092] The method includes:

[0093] S100. Insert the clamping member 3 into the patient's body, and place the fibrotic substances between the first clamping arm 31 and the second clamping arm 32.

[0094] Specifically, since in the non-force state, the first clamping arm 31 and the second clamping arm 32 are in an open state under the action of the second elastic member, after inserting the clamping member 3 into the patient's body, in order to facilitate subsequent clamping of the fibrotic substances, adjust the angle of the clamping member 3 to place the fibrotic substances to be clamped between the first clamping arm 31 and the second clamping arm 32.

[0095] S200. Move the pushing assembly 2 through the clamping wire to control the clamping member 3 to clamp the fibrotic substances.

[0096] Step S200 specifically includes the steps of:

[0097] S210. Insert the index finger and middle finger of one hand into the stabilizing ring 13, and press the middle finger against the pushing ring 212.

[0098] S220. Push the pushing ring 212 to move in the direction away from the clamping member 3 until the end of the pushing ring passes the clamping line.

[0099] Specifically, clamping lines are provided on both sides of the sliding hole 111 provided in the holding member 11. Only when the end of the pushing ring 212 (the end refers to the end of the pushing ring 212 away from the clamping member 3) moves to the position of the clamping line and beyond, the closed state of the clamping member 3 at this time can ensure stable clamping of the fibrous material to be clamped. The specific position of the clamping line can be obtained according to needs or experiments.

[0100] The thumb and middle finger of the medical staff are inserted into the stabilizing ring 13 for fixation. Then, the index finger of the medical staff presses against the outer edge of the pushing ring 212 and moves in the direction away from the clamping member 3. The stretching body 211 will drive the guide wire 22, and then the guide wire 22 will drive the clamping member 3 to move to the right, and thus gradually enter the recovery space 422 through the wire guide hole 1221. During the process of the clamping member 3 entering the accommodation space 4, the opening of the clamping member 3 will gradually close until the stretching member 21 moves to the clamping line or beyond the clamping line. At this time, the clamping member 3 can clamp the fibrous material.

[0101] Since the space size of the recovery space 422 is slightly larger than the space size of the placement space 421, the right end of the first elastic member 23 will abut against the inner wall of the recovery portion 122. And when the clamping member 3 moves to the right and enters the recovery space 422, the first elastic member 23 located on the right side of the clamping member 3 will abut against the inner wall of the recovery portion 122 and be compressed. When the clamping member 3 clamps the fibrous material and successfully removes it from the body, at this time, release the push on the stretching member 21. The compressed first elastic member 23 will return to its original state under the action of elastic potential energy. At this time, the clamping member 3 will re - extend from the wire guide hole 1221 to the outside. After the opening of the clamping member 3 is released from the restriction of the accommodation space 4, it will also reopen to wait for the next operation of removing the fibrous material. The overall operation is simple and convenient, solving the problem of the lack of a special clamping device for removing fibrous materials from the body.

[0102] In summary, a clamping device for removing fibrotic substances in artificial blood vessels includes a clamping base 1, a pushing component 2, and a clamping member 3. A wire guide hole 1221 is provided on the clamping base 1, and an accommodation space 4 is formed inside the clamping base 1. The wire guide hole 1221 communicates with the accommodation space 4. The pushing component 2 is arranged in the accommodation space 4. The clamping member 3 is arranged at one end of the pushing component 2, and the clamping member 3 is located at the end of the clamping base 1 where the wire guide hole 1221 is provided. Among them, the pushing component 2 is used to push the clamping member 3 to extend out of or enter through the wire guide hole 1221. As the clamping member 3 gradually extends out of the wire guide hole 1221, the clamping opening of the clamping member 3 gradually expands.

[0103] Before applying an external force to the clamping device for removing fibrotic substances in artificial blood vessels, the clamping member 3 is placed outside, and the clamping opening of the clamping member 3 is in an open state.

[0104] After that, the clamping member 3 is placed into the body. After determining the fibrotic substance, the pushing component 2 is pushed, and the clamping member 3 will be pulled into the accommodation space 4 together with the pushing component 2. During the process of the clamping member 3 entering the accommodation space 4, due to the blockage of the orifice of the wire guide hole 1221, the clamping opening of the clamping member 3 will gradually close until the fibrotic substance is tightly clamped. Then, the clamping device for removing fibrotic substances in artificial blood vessels is taken out of the body, and the fibrotic substance can be removed from the patient's body, solving the problem of the lack of a special clamping device for removing fibrotic substances from the body.

[0105] It should be noted that, without conflict, the embodiments and features in the embodiments of the present application can be combined with each other.

[0106] It should be noted that the present invention takes a clamping device and a clamping method for removing fibrotic substances in artificial blood vessels as an example to introduce the specific structure and working principle of the present invention. However, the application of the present invention is not limited to a clamping device and a clamping method for removing fibrotic substances in artificial blood vessels, and can also be applied to the production and use of other similar workpieces.

[0107] It should be understood that the present invention is not limited to the precise structure already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

[0108] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A clamping device for removing fibrotic substances in artificial blood vessels, characterized in that, Comprising: A clamping base body, on which a wire guiding hole is provided, an accommodating space is formed inside the clamping base body, and the wire guiding hole communicates with the accommodating space; A pushing assembly, which is arranged inside the accommodating space; A clamping member, which is arranged at one end of the pushing assembly, and the clamping member is located at one end of the clamping base body where the wire guiding hole is provided; Wherein, the pushing assembly is used to push the clamping member to extend out of or enter the wire guiding hole. While the clamping member gradually extends out of the wire guiding hole, the clamping opening of the clamping member gradually expands.

2. The clamping device for removing fibrotic substances in artificial blood vessels according to claim 1, wherein The pushing assembly includes a stretching member, a wire and a first elastic member; A sliding hole is provided on the clamping base body, and the sliding hole communicates with the accommodating space; The stretching member is arranged on the wire, and part of the stretching member extends out of the sliding hole. One end of the wire is connected to the clamping member, and the stretching member is used to pull the clamping member into the wire guiding hole; The first elastic member is arranged on the outer periphery of the wire, and the first elastic member has an elastic potential energy for pushing the clamping member out of the wire guiding hole.

3. The clamping device for removing fibrotic substances in artificial blood vessels according to claim 2, wherein, The clamping base body includes a holding member and a placing member, and the placing member is arranged at one end of the holding member; The accommodating space includes a first accommodating space and a second accommodating space. The first accommodating space is formed inside the holding member, the second accommodating space is formed inside the placing member, and the first accommodating space and the second accommodating space communicate with each other; The sliding hole is arranged on the holding member, and the sliding hole communicates with the first accommodating space; The first elastic member is arranged inside the placing member; The wire guiding hole is arranged at one end of the placing member away from the holding member, the wire guiding hole communicates with the second accommodating space, and the placing member is used to be placed into the body together with the clamping member.

4. The clamping device for removing fibrotic substances in artificial blood vessels according to claim 3, characterized in that, The placing member includes a placing portion and a recovery portion. One end of the placing portion is connected to the holding member, and the other end is connected to the recovery portion. The wire guiding hole is arranged at one end of the recovery portion away from the placing portion; The second accommodating space includes a placing space and a recovery space. The placing space is formed inside the placing portion, the recovery space is formed inside the recovery portion, the placing space communicates with the first accommodating space and the recovery space respectively, and the radial aperture size of the recovery portion is larger than the radial aperture size of the placing portion; The wire guiding hole communicates with the recovery space; The first elastic member is arranged inside the recovery space.

5. The clamping device for removing fibrotic substances in artificial blood vessels according to claim 4, characterized in that, The side wall of the orifice of the wire guiding hole is provided with a guiding inclined surface for guiding the clamping member into the placing space.

6. The clamping device for removing fibrotic substances in artificial blood vessels according to claim 2, wherein, The clamping member includes a first clamping arm, a second clamping arm and a second elastic member. One end of the first clamping arm and one end of the second clamping arm are hinged, and the second elastic member is arranged between the first clamping arm and the second clamping arm. The second elastic member has an elastic potential energy for opening the first clamping arm and the second clamping arm; The wire is connected to the hinged part of one end of the first clamping arm and one end of the second clamping arm.

7. The clamping device for removing fibrotic substances in artificial blood vessels according to claim 3, characterized in that, On the side walls on both sides of the sliding hole, limiting ridges are provided, and limiting grooves are provided on both sides of the stretching member, and the limiting ridges and the limiting grooves are slidably arranged.

8. The clamping device for removing fibrotic substances in artificial blood vessels according to claim 7, characterized in that, The stretching member includes a stretching body and a pushing ring, and the stretching body is arranged on the guide wire; Limiting grooves are provided on both sides of the stretching body; The pushing ring is arranged on the stretching body, and the pushing ring surrounds the outer periphery of the holding member.

9. The clamping device for removing fibrotic substances in an artificial blood vessel according to claim 8, wherein, A stabilizing ring is provided at one end of the holding member away from the implanting member.

10. A clamping method for removing fibrotic substances in artificial blood vessels, characterized in that, Applied to the clamping device for removing fibrotic substances in artificial blood vessels according to any one of claims 1 to 9, the clamping member includes a first clamping arm, a second clamping arm and a second elastic member, one end of the first clamping arm and one end of the second clamping arm are hinged, the second elastic member is arranged between the first clamping arm and the second clamping arm, and the second elastic member has an elastic potential energy for opening the first clamping arm and the second clamping arm; The pushing assembly is connected to the hinge joint of one end of the first clamping arm and one end of the second clamping arm; The method includes: Placing the clamping member into the patient's body, and placing the fibrotic substance between the first clamping arm and the second clamping arm; Moving the pushing assembly past the clamping wire to control the clamping member to clamp the fibrotic substance.

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