Hemorrhoid ablation device based on endoscope

Abstract

The utility model belongs to the technical field of medical instruments, and discloses an endoscope-based hemorrhoid ablation device which comprises an endoscope, an endoscope head end sleeve and an ablation needle assembly, the endoscope head end sleeve is annular, a sheath tube hole is formed in the lower portion of the endoscope head end sleeve, the endoscope head end is sleeved with the endoscope head end sleeve, and the ablation needle assembly is arranged on the lower portion of the endoscope head end sleeve. The ablation needle assembly comprises a needle body part, a handle and a connecting line, the front end of the needle body part is sleeved with a sheath tube hole, the rear end of the needle body part is connected with the handle, the handle is provided with a push button, the needle body part comprises a needle body and a sheath tube, the sheath tube is fixedly connected with the front end of the handle, the tail end of the needle body is fixedly connected with the push button on the handle, and the connecting line is connected with the needle body. The front end of the connecting line penetrates into the handle to be connected with the needle body, and the connecting line is used for providing ablation electric signals. The ablation needle is combined with the endoscope through the endoscope head end sleeve, so that the visual field is clear, the operation is convenient, the accuracy and the reliability of a haemorrhoids operation are improved, and the operation difficulty is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a hemorrhoid ablation device based on an endoscope. Background Art

[0002] Hemorrhoid refers to a soft venous mass formed by the dilation and flexion of the venous plexus under the mucosa at the end of the human rectum and under the anal canal skin. Usually, it can be treated by methods such as rubber ligation, infrared coagulation, cryodestruction, electrotherapy, and resection surgery. Methods such as infrared coagulation, cryodestruction, and electrotherapy may cause bleeding if the time is too long; pain is obvious during drug injection, and the rubber ligation method has less bleeding, but it is not easy to ligate the root of the hemorrhoid with the rubber ligation method, and the necrosis of the hemorrhoid is not complete, resulting in recurrence. Currently, the commonly used method is internal hemorrhoid radiofrequency ablation. Guided by a surgical anoscope, only one probe directly intervenes into the hemorrhoid nucleus, and the blood protein is coagulated and denatured through radiofrequency ablation, and then the hemorrhoid blood vessels are closed to block the blood supply of the hemorrhoid nucleus. However, the surgical anoscope can only observe the disease condition with the naked eye, the vision in the anal canal is not clear, the operation difficulty is large, the positioning is inaccurate, and the requirement for the doctor's technique is relatively high. Content of the Utility Model

[0003] The purpose of the utility model is to provide a hemorrhoid ablation device based on an endoscope to solve the above technical problems.

[0004] To achieve the above purpose, the specific technical solution of a hemorrhoid ablation device based on an endoscope of the utility model is as follows:

[0005] A hemorrhoid ablation device based on an endoscope includes an endoscope, an endoscope head end sleeve, and an ablation needle assembly. The endoscope head end sleeve is annular and has a sheath tube hole below. The endoscope head end sleeve is sleeved on the end of the endoscope head. The ablation needle assembly includes a needle body part, a handle, and a connecting wire. The front end of the needle body part is sleeved in the sheath tube hole, and the rear end is connected to the handle. There is a push button on the handle. The needle body part includes a needle body and a sheath tube. The sheath tube is fixedly connected to the front end of the handle, and the end of the needle body is fixedly connected to the push button on the handle and is controlled to expand and contract by the push button. The front end of the connecting wire penetrates into the handle and is connected to the needle body to provide an ablation electrical signal.

[0006] Further, the front end and the rear end of the endoscope head end sleeve are rounded. There is a blocking part at the front end inside the endoscope head end sleeve, and the blocking part is used to prevent the colonoscope from passing through the endoscope head end sleeve. The inner wall of the endoscope head end sleeve has an anti-card slot.

[0007] Further, the needle body includes a needle tip, a plastic-coated wire, and an insulating tube. The needle tip is fixedly connected to the front end of the plastic-coated wire. The insulating tube is sleeved outside the plastic-coated wire. The sheath tube is sleeved outside the insulating tube. The ends of the insulating tube and the plastic-coated wire are fixedly connected to the push knob.

[0008] Further, a stepped portion is provided at the rear end of the needle tip for the insulating tube to be inserted. A cylindrical hole is provided inside the rear end of the needle tip for connecting with the plastic-coated wire.

[0009] Further, the plastic-coated wire is a flexible wire and has a certain hardness, which can not only conduct electricity but also push the needle tip into the hemorrhoids. An insulating film is provided outside the plastic-coated wire to prevent external conduction.

[0010] Further, the needle body further includes a thermocouple. The thermocouple is arranged inside the insulating tube, with its end connected to the needle tip and its end connected to a connecting wire. The thermocouple is used to detect the ablation temperature of the needle body.

[0011] Further, the handle includes a left housing and a right housing. The left housing and the right housing are cooperatively connected to form the handle. Chutes are provided above the left housing and the right housing for providing a sliding space for the push knob. Locking grooves are provided above the chutes for providing a locking function for the push knob. An outer sheath tube groove is provided inside the front end of the handle for fixedly installing the sheath tube. Transverse grooves and longitudinal grooves are provided on the outer periphery of the outer sheath tube groove for storing glue.

[0012] Further, a positioning hole is also provided inside the front end of the handle for positioning the cooperation of the left housing and the right housing. The outer surfaces of the left housing and the right housing are biomimetic curved surfaces. Connecting wire fixing grooves are provided at the ends of the left housing and the right housing for fixing the connecting wire.

[0013] Further, the push knob includes a push block and a slider. A stop convex block is provided above the slider. The push block is fixedly connected to the stop convex block. A wire hole is provided below the slider for fixing the end of the needle body. Multiple glue application grooves are provided on the wire hole. Convex points are provided below both sides of the slider. The slider is arranged in the chute, and the two convex points slide in the chute. The stop convex block can be stuck into the stop groove above the chute to keep the slider fixed.

[0014] Further, anti-slip strips are provided on the upper surface of the push block. An indicating needle is provided on one side of the push block. Scale data is provided on the left housing. The indicating needle is used to indicate the moving distance of the needle tip.

[0015] The hemorrhoid ablation device based on an endoscope of the present utility model has the following advantages: Compared with radiofrequency ablation, the present utility model combines the ablation needle with the endoscope through the endoscope head sleeve, with clear vision, convenient operation, easy to clean the hemorrhoids thoroughly, the operation time can be reduced by half, less bleeding during the operation, less pain after the operation, and the wound healing time can be shortened by half. It improves the accuracy and reliability of hemorrhoid surgery and reduces the operation difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the hemorrhoid ablation device based on an endoscope of the present utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the endoscope head sleeve and the ablation needle assembly of the present utility model;

[0018] Figure 3 It is an exploded schematic diagram of the endoscope head sleeve and the ablation needle assembly of the present utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the endoscope head sleeve of the present utility model;

[0020] Figure 5 It is a schematic cross-sectional view of the endoscope head sleeve of the present utility model;

[0021] Figure 6 It is a schematic diagram of the tip of the needle of the present utility model;

[0022] Figure 7 It is a schematic cross-sectional view of the tip of the needle of the present utility model;

[0023] Figure 8 It is a schematic diagram of the plastic-coated wire of the present utility model;

[0024] Figure 9 It is a schematic diagram of the handle of the present utility model;

[0025] Figure 10 It is a schematic diagram of the push button of the present utility model;

[0026] Marking Explanation in the Figure: 1. Endoscope; 2. Endoscope Tip Sleeve; 21. Sheath Tube Hole; 22. Rounded Corner; 23. Blocking Part; 24. Anti-Card Slot; 3. Ablation Needle Assembly; 31. Needle Body Part; 311. Needle Body; 3111. Needle Tip; 31111. Step Part; 31112. Cylindrical Hole; 3112. Plastic-Coated Wire; 31121. Insulating Film; 3113. Insulating Tube; 3114. Thermocouple; 312. Sheath Tube; 32. Handle; 321. Left Housing; 322. Right Housing; 323. Slide Groove; 324. Outer Sheath Tube Groove; 3241. Transverse Groove; 3242. Longitudinal Groove; 325. Positioning Hole; 326. Locking Groove; 327. Bionic Surface; 328. Connecting Wire Fixing Groove; 329. Push Button; 3291. Push Block; 32911. Anti-Slip Strip; 32912. Indicator Needle; 3292. Slide Block; 32921. Stop Protrusion; 32922. Wire Hole; 32923. Protruding Point; 32924. Glue Application Groove; 33. Connecting Wire. Detailed Implementation Manner

[0027] In order to better understand the purpose, structure and function of the present invention, the following further describes in detail a hemorrhoid ablation device based on an endoscope according to the present invention with reference to the accompanying drawings.

[0028] As Figure 1-3 shown, a hemorrhoid ablation device based on an endoscope according to the present invention includes an endoscope 1, an endoscope tip sleeve 2 and an ablation needle assembly 3. The endoscope tip sleeve 2 is annular and has a sheath tube hole 21 below. The endoscope tip sleeve 2 is sleeved on the tip of the endoscope 1. The ablation needle assembly 3 includes a needle body part 31, a handle 32 and a connecting wire 33. The front end of the needle body part 31 is sleeved in the sheath tube hole 21, and the rear end is connected to the handle 32. The handle 32 has a push button 329. The needle body part 31 includes a needle body 311 and a sheath tube 312. The sheath tube 312 is fixedly connected to the front end of the handle 32. The end of the needle body 311 is fixedly connected to the push button 329 on the handle 32 and is controlled to expand and contract by the push button 329. The front end of the connecting wire 33 passes through the inside of the handle 32 and is connected to the needle body 311 for providing an ablation electrical signal. The rear end of the connecting wire 33 is connected to an ablation host.

[0029] The endoscope 1 is an optical instrument commonly used in the prior art, which is sent into the body through the natural body cavity outside the body to examine internal diseases. The present invention ablates hemorrhoids based on an endoscope, with clear image display, facilitating doctors to judge the location of the lesion.

[0030] As Figure 4 Figure 5As shown, the front end and the rear end of the endoscope lens end sleeve 2 are rounded corners 22, which are convenient for insertion into and extraction from the anus to avoid tissue damage. The inner front end of the endoscope lens end sleeve 2 has a blocking portion 23, which is used to prevent the colonoscope from passing through the endoscope lens end sleeve 2 when the colonoscope is sleeved. The inner wall of the endoscope lens end sleeve 2 has an anti-card slot 24, and the anti-card slot 24 is a groove, which makes the endoscope lens end sleeve 2 easy to be sleeved on the endoscope 1 and easy to be pulled out.

[0031] The needle body 311 includes a needle tip 3111, a plastic-coated wire 3112, and an insulating tube 3113. The needle tip 3111 is fixedly connected to the front end of the plastic-coated wire 3112. The insulating tube 3113 is sleeved outside the plastic-coated wire 3112. The sheath tube 312 is sleeved outside the insulating tube 3113. The ends of the insulating tube 3113 and the plastic-coated wire 3112 are fixedly connected to the push knob 329. As Figure 6 Figure 7 shown, preferably, the front end of the needle tip 3111 can be a quadrangular structure with a sharp structure, which is convenient for inserting into hemorrhoids. The rear end of the needle tip 3111 has a stepped portion 31111 for the insulating tube 3113 to be sleeved, ensuring that only the front end of the needle tip 3111 has an ablation effect; the inner part of the rear end of the needle tip 3111 has a cylindrical hole 31112 for connecting with the plastic-coated wire 3112, which can be connected in a crimping or welding form. As Figure 8 shown, preferably, the plastic-coated wire 3112 is a flexible wire, which can be composed of single-strand or multi-strand wires and has a certain hardness, enabling it to conduct electricity and push the needle tip into the hemorrhoids; the plastic-coated wire 3112 has an insulating film 31121 outside to prevent conduction with the outside. Preferably, the needle body 311 further includes a thermocouple 3114, which is arranged inside the insulating tube 3113, with the end connected to the needle tip 3111 and the end connected to the connecting wire 33. The thermocouple 3114 is used to detect the ablation temperature of the needle body 311, thereby controlling the ablation range.

[0032] As Figure 9As shown, the handle 32 includes a left housing 321 and a right housing 322. The left housing 321 and the right housing 322 are cooperatively connected to form the handle 32. There are sliding grooves 323 above the left housing 321 and the right housing 322. The sliding grooves 323 are used to provide a sliding space for the push-twist 329. There is a locking groove 326 above the sliding grooves 323. The locking groove 326 is used to provide a locking function for the push-twist 329. Inside the front end of the handle 32, there is an outer sheath tube groove 324. The outer sheath tube groove 324 is used to fixedly install the sheath tube 312. There are transverse grooves 3241 and longitudinal grooves 3242 on the outer periphery of the outer sheath tube groove 324. The transverse grooves 3241 and the longitudinal grooves 3242 are used to store glue. When the outer sheath tube is glued to the handle, there are more contact surfaces and the bonding is more firm. There is also a positioning hole 325 inside the front end of the handle 32. The positioning hole 325 is used for the cooperative positioning of the left housing 321 and the right housing 322. The outer surfaces of the left housing 321 and the right housing 322 are bionic curved surfaces 327. When holding, the index finger and the middle finger clamp it, which is comfortable to hold by hand and has anti-slip properties. At the ends of the left housing 321 and the right housing 322, there is a connecting wire fixing groove 328. The connecting wire fixing groove 328 is used to fix the connecting wire 33. When installing the connecting wire 33, preferably, it is fixed by dispensing glue, which is more reliable.

[0033] As Figure 10 shown, the push-twist 329 includes a push block 3291 and a slider 3292. There is a stop bump 32921 above the slider 3292. The push block 3291 is fixedly connected to the stop bump 32921. There is a wire hole 32922 below the slider 3292. The wire hole 32922 is used to fix the end of the needle body 311. There are a plurality of dispensing grooves 32924 on the wire hole 32922. By dispensing glue here, the plastic-coated wire 3112 is bonded to the push-twist 329 as a whole. The multiple dispensing grooves 32924 make the bonding more firm. There are bump points 32923 below both sides of the slider 3292. The slider 3292 is arranged in the sliding groove 323. The two bump points 32923 slide in the sliding groove 323. When stationary, the stop bump 32921 is snapped into the stop groove 326 above the sliding groove 323 to keep the slider 3292 fixed. After pressing the push block 3291, the stop bump 32921 disengages from the stop groove 326. Pushing the push block 3291 can move the slider 3292 back and forth, thereby moving the needle tip 3111 back and forth. Preferably, there is an anti-slip strip 32911 on the upper surface of the push block 3291. When pressing with the finger, it has an anti-slip effect. The anti-slip strip 32911 is a large arc surface, which is more comfortable to press on. There is an indicating needle 32912 on one side of the push block 3291. There are scale data on the left housing 321. The indicating needle 32912 is used to indicate the moving distance of the needle tip 3111, and thus the ablation range can be controlled.

[0034] During use, first put the endoscope tip sheath 2 on the front end of the endoscope 1, and push it to the 0 position through the push block 3291 on the handle 32. At this time, the ablation needle at the front end of the endoscope 1 does not extend. Insert the colonoscope with the hemorrhoid ablation needle into the patient's anus, find the hemorrhoid through the image, open the air blowing valve on the endoscope 1, push the push block 3291 on the handle 32 to pierce the needle tip 3111 into the hemorrhoid, and step on the switch on the ablation main unit to gradually ablate the hemorrhoid. If it is necessary to lift the hemorrhoid during the ablation process, use the bending function on the endoscope 1.

[0035] It can be understood that the present utility model is described through some embodiments. As is known to those skilled in the art, without departing from the spirit and scope of the present utility model, various changes or equivalent replacements can be made to these features and embodiments. Additionally, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.

Claims

1. An endoscopic hemorrhoid ablation device, comprising an endoscope (1), an endoscope head sleeve (2) and an ablation needle assembly (3), characterized in that: The endoscope lens end sleeve (2) is annular and has a sheath hole (21) at the bottom. The endoscope lens end sleeve (2) is sleeved on the end of the endoscope lens. The ablation needle assembly (3) comprises a needle body part (31), a handle (32) and a connecting wire (33). The front end of the needle body part (31) is sleeved in the sheath hole (21), and the rear end is connected to the handle (32). The handle (32) has a push knob (329). The needle body part (31) comprises a needle body (311) and a sheath (312). The sheath (312) is fixedly connected to the front end of the handle (32). The rear end of the needle body (311) is fixedly connected to the push knob (329) on the handle (32), and the extension and retraction are controlled by the push knob (329). The front end of the connecting wire (33) penetrates into the handle (32) and is connected to the needle body (311) to provide an ablation electrical signal.

2. The endoscopic hemorrhoid ablation device according to claim 1, characterized in that: The front end and rear end of the endoscope lens end sleeve (2) are rounded corners (22); the front end of the endoscope lens end sleeve (2) is provided with a blocking portion (23) for preventing a colonoscope from passing through the endoscope lens end sleeve (2); and the inner wall of the endoscope lens end sleeve (2) is provided with an anti-stuck groove (24).

3. The endoscopic hemorrhoid ablation device according to claim 1, characterized in that: The needle body (311) comprises a needle tip (3111), a plastic-coated wire (3112) and an insulating tube (3113); the needle tip (3111) is fixedly connected to the front end of the plastic-coated wire (3112); the insulating tube (3113) is sleeved outside the plastic-coated wire (3112); the sheath tube (312) is sleeved outside the insulating tube (3113); and the ends of the insulating tube (3113) and the plastic-coated wire (3112) are fixedly connected to a push-twist (329).

4. The endoscopic hemorrhoid ablation device according to claim 3, characterized in that: The rear end of the needle tip (3111) has a step portion (31111) for inserting the insulating tube (3113), and the rear end of the needle tip (3111) has a cylindrical hole (31112) inside, and the cylindrical hole (31112) is used to connect to the plastic-coated wire (3112).

5. The endoscopic hemorrhoid ablation device according to claim 3, characterized in that: The plastic-coated wire (3112) is a flexible wire with a certain hardness, and can conduct electricity and push the needle tip (3111) into the hemorrhoid; the plastic-coated wire (3112) has an insulating film (31121) on the outside to prevent conduction with the outside.

6. The endoscopic hemorrhoid ablation device according to claim 3, characterized in that: The needle body (311) further comprises a thermocouple (3114), wherein the thermocouple (3114) is disposed in the insulating tube (3113), an end of which is connected to the needle tip (3111), and a terminal end of which is connected to the connecting wire (33), and the thermocouple (3114) is used to detect the ablation temperature of the needle body (311).

7. The endoscopic hemorrhoid ablation device according to claim 1, characterized in that: The handle (32) comprises a left shell (321) and a right shell (322), wherein the left shell (321) and the right shell (322) are connected together to form the handle (32), wherein a slide groove (323) is provided above the left shell (321) and the right shell (322), wherein the slide groove (323) is used to provide a sliding space for a push-twist (329), wherein a locking groove (326) is provided above the slide groove (323), wherein the locking groove (326) is used to provide a locking function for the push-twist (329), wherein an outer sheath groove (324) is provided inside the front end of the handle (32), wherein the outer sheath groove (324) is used to fix and install the sheath tube (312), wherein the outer sheath groove (324) has a transverse groove (3241) and a longitudinal groove (3242) on its periphery, wherein the transverse groove (3241) and the longitudinal groove (3242) are used to store glue.

8. The endoscopic hemorrhoid ablation device according to claim 7, characterized in that: The front end of the handle (32) further comprises a positioning hole (325), the positioning hole (325) being used for the matching positioning of the left shell (321) and the right shell (322), the outer surfaces of the left shell (321) and the right shell (322) being bionic curved surfaces (327), the ends of the left shell (321) and the right shell (322) comprising a connecting wire fixing groove (328), the connecting wire fixing groove (328) being used for fixing the connecting wire (33).

9. The endoscopic hemorrhoid ablation device according to claim 7, characterized in that: The push knob (329) comprises a push block (3291) and a slider (3292). A stop convex block (32921) is provided above the slider (3292). The push block (3291) is fixedly connected to the stop convex block (32921). A wire hole (32922) is provided below the slider (3292). The wire hole (32922) is used to fix the end of the needle body (311). The wire hole (32922) has a plurality of glue dispensing grooves (32924). The slider (3292) has convex points (32923) below both sides. The slider (3292) is arranged in the slide groove (323). The two convex points (32923) slide in the slide groove (323). The stop convex block (32921) can be inserted into the stop groove above the slide groove (323) to keep the slider (3292) fixed.

10. The endoscopic hemorrhoid ablation device according to claim 9, characterized in that: The upper surface of the push block (3291) is provided with an anti-slip strip (32911), one side of the push block (3291) is provided with an indicator needle (32912), and scale data is provided on the left housing (321), and the indicator needle (32912) is used to indicate the moving distance of the tip (3111) of the needle (32912).

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