Blood vessel stripping device

Abstract

The utility model relates to the field of medical instruments, in particular to a blood vessel stripping device which comprises a blood vessel stripping catheter and a guiding assembly matched with the blood vessel stripping catheter to strip blood vessels. The blood vessel stripping catheter comprises a handheld part which extends longitudinally and is provided with an upper catheter cavity and a lower catheter cavity, a partition plate is arranged between the upper catheter cavity and the lower catheter cavity, and a sliding groove communicated with the lower catheter cavity is formed in the outer wall of the handheld part; the catheter is fixedly arranged at the bottom end of the handheld part, the bottom end of the catheter extends downwards to form a horn flaring, and the side wall of the catheter is provided with a passing opening for a blood vessel to penetrate out; the cutting pipe is inserted in the guide pipe, a horn-shaped knife edge is arranged at the lower end of the cutting pipe, a base connected into the lower pipe cavity in a sliding mode is arranged at the top end of the cutting pipe, and a shifting button matched with the sliding groove in a sliding mode is fixedly arranged on the outer wall of the base. The scalpel is simple to operate and rapid and accurate in diseased tissue stripping, and various medical instruments do not need to be replaced in an operation.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, and particularly relates to a blood vessel stripping device. Background Art

[0002] Blood vessel stripping is a common surgical treatment method, mainly used for the treatment of varicose veins of the lower extremities. Its principle is to physically remove the diseased blood vessels, thereby reducing the situation of venous dilation, promoting blood reflux, and reducing blood stasis. This treatment method has a significant effect on alleviating clinical symptoms such as heavy lower extremities, soreness and discomfort, pain, and edema.

[0003] Currently, the commonly used method for stripping blood vessels clinically is to make incisions on the skin at both ends of the diseased blood vessels of the patient, expose the diseased blood vessels, ligate at the high position of the diseased blood vessels, then use a stripping catheter to sheath the diseased blood vessels from the low position end, and strip the diseased tissue along the diseased blood vessels towards the high position end. After the stripping is completed, cut below the high ligation position, and then take out the diseased blood vessels from the patient's body.

[0004] This traditional method of stripping blood vessels requires the cooperation of various medical devices during the operation, the surgical process is cumbersome, and during the process of stripping the diseased blood vessels, intraoperative problems such as the rupture of the diseased blood vessels in the body, discontinuous stripping process, and inaccurate stripping tissue are extremely likely to occur. This traditional method has a long operation time and a large operation difficulty. Content of the Utility Model

[0005] The purpose of the utility model is to provide a blood vessel stripping device, which is simple to operate, quickly and accurately strips diseased tissues, and does not require replacement of various medical devices during the operation.

[0006] The purpose of the utility model is achieved through the following technical solutions: A blood vessel stripping device, which includes a blood vessel stripping catheter and a guiding component for cooperating with the blood vessel stripping catheter to strip blood vessels;

[0007] The blood vessel stripping catheter includes:

[0008] A handheld part, which extends longitudinally and has an upper lumen and a lower lumen. A partition is provided between the upper lumen and the lower lumen, and a chute communicating with the lower lumen is provided on the outer wall of the handheld part;

[0009] A catheter, which is fixedly arranged at the bottom end of the handheld part. The bottom end of the catheter extends downward with a flared opening, and a through opening for the blood vessel to pass through is provided on the side wall of the catheter;

[0010] A cutting tube, which is inserted into the catheter. The lower end of the cutting tube has a flared knife edge, a base is provided at the top end of the cutting tube and is slidably connected in the lower lumen, and a dial button fixedly arranged on the outer wall of the base is slidably matched with the chute.

[0011] Compared with the prior art, the advantages of the utility model are:

[0012] 1. Through the cooperation of the handheld part, catheter, cutting tube and injection tube in the vascular stripping catheter, the present utility model does not need to frequently replace medical devices during the operation, thus making the operation process of clinicians convenient and fast, and achieving the effect of improving the operation efficiency;

[0013] 2. Through the cooperation of the vascular stripping catheter and the guiding component, during the process of stripping the diseased blood vessel, the catheter can smoothly strip the diseased blood vessel along the guide wire passing through the diseased blood vessel, and the stripping process is continuous and fast, avoiding the risk of the diseased blood vessel breaking in the patient's body during the traditional stripping process;

[0014] 3. Through the cooperation of the sliding groove and the dial button, the dial button slides in the sliding groove and drives the base to slide in the lower lumen, so that the base drives the cutting tube to move longitudinally. Moreover, the sliding groove is divided into a first groove section and a second groove section, so that the dial button has two sliding strokes in the sliding groove. When the dial button slides from the end of the first groove section to the connection of the first groove section and the second groove section, the base drives the cutting tube to block the through port and makes the trumpet-shaped cutting edge abut against the diseased blood vessel to be stripped. When the dial button continues to slide to the end of the second groove section, the base drives the cutting tube to continue to move downward and cuts off the diseased blood vessel, realizing the precise stripping of the diseased blood vessel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of an embodiment of a vascular stripping device of the present utility model;

[0016] Figure 2 is a schematic structural diagram of the vascular stripping catheter of the present utility model;

[0017] Figure 3 is a schematic structural diagram of the guiding component of the present utility model;

[0018] Figure 4 is a perspective view of the structure of the vascular stripping catheter of the present utility model;

[0019] Figure 5 is a perspective view of the structure of the vascular stripping catheter during the injection process of the injection tube;

[0020] Figure 6 is a perspective view of the structure of the vascular stripping catheter during the cutting process of the cutting tube;

[0021] Figure 7 is a partial schematic view of the guide wire penetrating into the diseased blood vessel of the present utility model;

[0022] Figure 8 is a partial schematic view of the trumpet-shaped cutting edge abutting against the diseased blood vessel of the present utility model.

[0023] Figure 9It is a schematic structural diagram of the bottom end of the liquid injection tube of the present utility model.

[0024] Label description: 1 Vascular stripping catheter, 11 Handheld part, 111 Upper lumen, 112 Lower lumen, 113 Partition plate, 114 Slide groove, 1141 First groove section, 1142 Second groove section, 12 Catheter, 121 Flared mouth, 122 Through port, 13 Cutting tube, 131 Flared cutting edge, 132 Base, 133 Knob, 14 Syringe tube, 141 Holding handle, 1411 Pushing plate, 1412 Grip, 1413 Connecting rod, 1414 Liquid injection tube, 15 Compression spring, 2 Guiding component, 21 Guiding head, 22 Guide wire, 23 Guide wire handle, 3 Diseased blood vessel. Detailed implementation manners

[0025] The following combines the specification drawings and embodiments to elaborate on the content of the present utility model in detail:

[0026] As Figures 1-4 shown, it is a schematic diagram of an embodiment of a vascular stripping device provided by the present utility model, which includes a vascular stripping catheter 1 and a guiding component 2 for cooperating with the vascular stripping catheter 1 to strip blood vessels;

[0027] The vascular stripping catheter 1 includes:

[0028] A handheld part 11, longitudinally extending and having an upper lumen 111 and a lower lumen 112. A partition plate 113 is provided between the upper lumen 111 and the lower lumen 112. A slide groove 114 communicating with the lower lumen 112 is provided on the outer wall of the handheld part 11;

[0029] A catheter 12, fixedly provided at the bottom end of the handheld part 11. The bottom end of the catheter 12 extends downward with a flared mouth 121. A through port 122 for the blood vessel to penetrate is provided on the side wall of the catheter 12;

[0030] A cutting tube 13, inserted into the catheter 12. The lower end of the cutting tube 13 has a flared cutting edge 131. The top end of the cutting tube 13 is provided with a base 132 slidably connected in the lower lumen 112. A knob 133 fixedly provided on the outer wall of the base 132 is slidably matched with the slide groove 114.

[0031] The vascular stripping catheter 1 further includes a syringe tube 14;

[0032] The syringe tube 14 penetrates through the cutting tube 13 up and down. The top end of the syringe tube 14 is provided with a holding handle 141 movably connected to the handheld part 11; The holding handle 141 includes a pushing plate 1411 arranged in the upper lumen 111, a grip 1412 located above the handheld part 11, and a connecting rod 1413 connecting the pushing plate 1411 and the grip 1412 and penetrating through the top end of the handheld part 11. The top end of the grip 1412 extends upward with a liquid injection tube 1414, and the liquid injection tube 1414 is communicated with the syringe tube 14.

[0033] The connecting rod 1413 is slidably connected to the top end of the handheld part 11, and a compression spring 15 is provided between the push plate 1411 and the partition plate 113.

[0034] Threads for facilitating connection with an external liquid injection instrument are provided on the outer wall of the liquid injection tube 1414.

[0035] Anti-slip patterns for increasing friction are provided on the outer wall of the grip 1412.

[0036] The chute 114 is divided into a first groove section 1141 extending longitudinally and a second groove section 1142 obliquely communicating with the bottom end of the first groove section 1141. When the dial button 133 slides to the communication position of the first groove section 1141 and the second groove section 1142, the base 132 drives the tube cutter 13 to move longitudinally in the catheter 12 until the bottom end of its flared cutting edge 131 blocks the through port 122.

[0037] The guiding assembly 2 includes a guide wire 22 having a guiding head 21 at one end, and a wire handle 23 for facilitating gripping is provided at the other end of the guide wire 22.

[0038] A light source may be provided on the flared opening 121 to facilitate the intraoperative observation of the guiding process by the clinician.

[0039] The catheter 12 is made of stainless steel, and the edge of the flared opening 121 is subjected to passivation treatment.

[0040] The flared cutting edge 131 is in clearance fit with the catheter 12.

[0041] The bottom end of the liquid injection tube 1414 has a necking structure with a reduced diameter (as Figure 9 shown) to improve the accuracy of liquid medicine injection.

[0042] The guide wire 22 is a soft steel wire that can be stacked and coiled and has a smooth outer wall.

[0043] A light source may be provided inside the guiding head 21 to facilitate the intraoperative observation of the guiding process by the clinician.

[0044] A one-way valve is provided in the liquid injection tube 1414 to prevent the liquid medicine injected into the liquid injection tube 1414 from flowing back.

[0045] The general usage method of the present utility model is as follows:

[0046] Step S1: Incise the skin of the patient at the proximal end of the target blood vessel to be dissected, and then ligate the proximal end of the target blood vessel to be dissected at a high position. The blood vessel at the distal end of this ligation site is temporarily freed without ligation;

[0047] Subsequently, at the other end of the target blood vessel, an external puncture sheath is inserted into the target blood vessel in the proximal direction, and a guide wire 22 with a guiding head 21 is sent through the puncture sheath into the target blood vessel to the free end of the proximal blood vessel and ligated to this free end blood vessel, establishing an intravascular guide wire-supported blood vessel guide wire stripping track on the target blood vessel.

[0048] Step S2: As Figure 7 shown, align the flared opening 121 on the catheter 12 with the free end of the target blood vessel, and insert the target blood vessel into the catheter 12 along the guide wire 22. Subsequently, the target blood vessel and the guide wire 22 are passed out through the through-opening 122 on the side wall of the catheter 12.

[0049] Step S3: As Figure 5 shown, press the grip 1412, the grip 1412 drives the connecting rod 1413, the connecting rod 1413 drives the push plate 1411, and the push plate 1411 pushes the compression spring, causing the bottom end of the injection tube 14 to extend out of the flared opening 121. Subsequently, an external instrument filled with swelling fluid is connected to the injection tube 1414, and the swelling fluid is injected into the injection tube 1414. The swelling fluid flows into and out of the injection tube 14 through the injection tube 1414, thereby separating the part of the target blood vessel to be cut from the normal tissue for subsequent cutting and stripping.

[0050] Operate the catheter 12 to push it along the guide wire 22 in the target blood vessel towards the distal end of the target blood vessel. During the pushing process, the target blood vessel is separated from the normal tissue through the flared opening 121 until the entire diseased blood vessel is separated by the flared opening 121. Subsequently, the guide wire 22 penetrating the blood vessel is withdrawn along the original path.

[0051] Step S4: As Figure 6 shown, after the part of the target blood vessel to be cut is separated from the normal tissue, push the button 133, causing the button 133 to slide in the chute 14 and drive the base 132 to slide in the lower lumen 112, so that the base 132 drives the cutting tube 13 to move longitudinally. When the button 133 slides from the end of the first groove section 1141 to the connection between the first groove section 1141 and the first groove section 1142, the base 132 drives the cutting tube 13 to block the through-opening 122. As Figure 8 shown, at this time, the trumpet-shaped cutting edge 131 abuts against the target blood vessel to be stripped. When the button 133 continues to slide to the end of the first groove section 1142, the base 132 drives the cutting tube 13 to continue to move downward and cuts off the connection between the target blood vessel and the normal blood vessel, achieving precise stripping of the target blood vessel. Subsequently, the stripped target blood vessel is withdrawn from the patient's body, and then the catheter 12 is withdrawn, thereby realizing the operation of blood vessel stripping using the present utility model.

[0052] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A vascular stripping device, characterized in that: It comprises a blood vessel stripping catheter (1) and a guide assembly (2) that cooperates with the blood vessel stripping catheter (1) to strip the blood vessel; The vascular stripping catheter (1) comprises: The hand-held portion (11) extends longitudinally and has an upper tube cavity (111) and a lower tube cavity (112), a partition (113) is provided between the upper tube cavity (111) and the lower tube cavity (112), and a slide groove (114) communicating with the lower tube cavity (112) is provided on the outer wall of the hand-held portion (11); A catheter (12) is fixedly mounted at the bottom end of the handheld portion (11), the bottom end of the catheter (12) is provided with a trumpet-shaped expansion opening (121) extending downward, and a through opening (122) for allowing a blood vessel to pass through is provided on the side wall of the catheter (12); The cutting tube (13) is inserted into the catheter (12), the lower end of the cutting tube (13) has a trumpet-shaped blade (131), the top end of the cutting tube (13) is provided with a base (132) slidably connected to the lower tube cavity (112), and the outer wall of the base (132) is fixedly provided with a dial button (133) that matches and slides with the slide groove (114).

2. The vascular stripping device according to claim 1, characterized in that: The vascular stripping catheter (1) further comprises an injection tube (14); The injection tube (14) passes through the cutting tube (13) from top to bottom, and a gripping handle (141) movably connected to the hand-held part (11) is provided at the top of the injection tube (14); the gripping handle (141) comprises a push plate (1411) arranged in the upper tube cavity (111), a gripping handle (1412) located above the hand-held part (11), and a connecting rod (1413) connected between the push plate (1411) and the gripping handle (1412) and passing through the top of the hand-held part (11); an injection tube (1414) extends upward from the top of the gripping handle (1412), and the injection tube (1414) is connected to the injection tube (14).

3. The vascular stripping device according to claim 2, characterized in that: The connecting rod (1413) is slidably connected to the top of the hand-held part (11), and a compression spring (15) is provided between the push plate (1411) and the partition plate (113).

4. The blood vessel stripping device according to claim 2, characterized in that: The outer wall of the injection tube (1414) is provided with a thread for connecting to an external injection device.

5. The blood vessel stripping device according to claim 2, characterized in that: The outer wall of the handle (1412) is provided with anti-slip patterns for increasing friction.

6. The blood vessel stripping device according to claim 1, characterized in that: The slide groove (114) is divided into a first groove section (1141) extending longitudinally and a second groove section (1142) obliquely connected to the bottom end of the first groove section (1141). When the dial button (133) slides to the connection point between the first groove section (1141) and the second groove section (1142), the base (132) drives the tube cutter (13) to move longitudinally in the guide tube (12) until the bottom end of the trumpet-shaped blade (131) blocks the through port (122).

7. The blood vessel stripping device according to claim 1, characterized in that: The guide assembly (2) comprises a guide wire (22) having a guide head (21) at one end, and a guide wire handle (23) which is easy to hold is provided at the other end of the guide wire (22).

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