Endoscope snare structure

Abstract

The utility model provides an endoscope snare structure which comprises a handle, the front section of the handle is connected with an outer sheath tube, a pull wire is arranged in the outer sheath tube, a flushing assembly is further arranged in the outer sheath tube and comprises a flushing tube, the flushing tube is located in the outer sheath tube, the front section of the outer sheath tube is sealed through an end plate, one end of the flushing tube is connected to the end plate, and the other end of the flushing tube is connected to the end plate. The other end of the flushing pipe is connected to the bottom of the liquid adding opening. By means of the flushing assembly, flushing liquid can be injected through the liquid adding opening to flush the surgical site in the surgical process, the surgical visual field is kept clear, the situation that the operation time is prolonged due to the fuzzy visual field is reduced, and the surgical efficiency is improved. The cutting knife and the cutting groove are arranged on the snare, so that a small focus can be more efficiently cut, and for a large focus, the high-frequency electric knife can be connected through the electric knife interface, the traction wire and the snare are electrified, the focus can be more effectively cut, and electric coagulation hemostasis is carried out after the focus is cut. The rotating head is rotationally connected with the bottom of the mounting pipe through the bearing, the angle of the ring can be flexibly adjusted according to the operation requirement, the to-be-cut focus can be conveniently sleeved with the ring, and operation is convenient.

Description

Technical Field

[0001] This utility model mainly relates to the technical field of medical devices, specifically an endoscope snare structure. Background Technology

[0002] Endoscopes such as cystoscopes, ureteroscopes, and nephroscopes allow for direct visualization of internal lesions in the bladder, ureters, and kidneys. Endoscopic examination is a commonly used diagnostic tool in urology. The snare is a frequently used instrument in endoscopic surgery. In conjunction with a high-frequency instrument, it is inserted through the urethra via the endoscope's forceps channel into the bladder and prostate area to treat polyps, small tumors, or remove prostatic hyperplasia. This surgical method is the most convenient and efficient way to treat urological diseases; therefore, the snare is widely used in urological surgery.

[0003] Existing technology discloses a medical snare device, including a handle, a guide tube, and a snare traction line. The rear end of the guide tube is threadedly connected to the handle, and the front end of the guide tube is closed by an end plate. The end plate has a through hole with a diameter larger than that of the snare traction line. The rear end of the snare traction line passes through the guide tube and is fixedly connected to the handle, while the front end passes through the through hole and is knotted to form a movable snare located outside the guide tube.

[0004] However, in clinical use, the endoscopic field of view is easily obstructed by blood or tissue debris, requiring the use of a washer to rinse the lesion. The alternation of two instruments in and out of the endoscope and the replacement of instruments inadvertently increase the operation time, increase the medical costs for patients, increase the workload of medical staff, and increase the surgical risks. Utility Model Content

[0005] This utility model mainly provides an endoscope snare structure to solve the technical problems mentioned in the background art.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0007] An endoscope snare structure includes a handle, the front end of which is connected to an outer sheath, a traction line is provided inside the outer sheath, and a flushing component is also provided inside the outer sheath.

[0008] The flushing assembly includes a flushing tube located inside the outer sheath. The front section of the outer sheath is closed by an end plate. One end of the flushing tube is connected to the end plate. A liquid inlet is provided at the top of the handle, and the other end of the flushing tube is connected to the bottom of the liquid inlet.

[0009] Preferably, the end plate has a flushing hole with the same diameter as the inner diameter of the flushing pipe, and the flushing pipe is coaxially connected to the flushing hole.

[0010] Preferably, the handle includes a mounting tube, which is a hollow cylindrical structure with openings at the top and bottom. The top of the mounting tube is provided with a fixed handle, and the fixed handle is provided with an anti-slip pad. The mounting tube is fitted with a movable handle, and the bottom of the mounting tube is provided with a rotating head.

[0011] Preferably, the surface of the mounting tube is provided with a sliding groove, and the movable handle slides up and down on the mounting tube through the sliding groove. An electric knife interface is provided in the lower part of the mounting tube.

[0012] Preferably, the rotating head is rotatably connected to the bottom of the mounting tube via a bearing, the rotating head is provided with anti-slip texture, and the bottom of the rotating head is connected to the outer sheath tube.

[0013] Preferably, the end plate has a through hole with a diameter larger than that of the traction line. The end of the traction line passes through the through hole and the rotating head and is connected to the moving handle. The front end of the traction line passes through the through hole to form a loop, and the loop is located outside the outer sheath.

[0014] Preferably, the snare includes a working section and a non-working section, the working section being provided with a cutter and the non-working section being provided with a cutting groove.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] The irrigation component of this invention allows for the injection of irrigation fluid into the surgical site during surgery via the inlet, maintaining a clear surgical field, reducing operation time caused by blurred vision, and improving surgical efficiency. The cutting blade and groove on the snare allow for more efficient removal of smaller lesions, while for larger lesions, a high-frequency electrosurgical unit can be connected via the electrosurgical interface to energize the traction wire and snare, resulting in more effective lesion removal and subsequent electrocoagulation for hemostasis. The rotating head is rotatably connected to the bottom of the mounting tube via a bearing, allowing for flexible adjustment of the snare angle according to surgical needs, facilitating the placement of the snare on the lesion and simplifying operation.

[0017] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of this utility model;

[0021] Figure 4This is a schematic diagram of the structure of this utility model.

[0022] The attached figures are labeled as follows: 1. Handle; 101. Mounting tube; 102. Fixed handle; 103. Anti-slip pad; 104. Moving handle; 105. Rotating head; 106. Slide groove; 107. Electrosurgical interface; 108. Anti-slip texture; 2. Outer sheath tube; 201. End plate; 202. Flushing hole; 203. Through hole; 3. Traction line; 301. Sleeve; 302. Working section; 303. Non-working section; 304. Cutter; 305. Cutting groove; 4. Flushing assembly; 401. Flushing tube; 402. Liquid inlet. Detailed Implementation

[0023] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0024] Example

[0025] Please refer to the attached document carefully. Figure 1 , 2 As shown in Figure 3, an endoscope snare structure includes a handle 1, an outer sheath 2 connected to the front end of the handle 1, a traction line 3 inside the outer sheath 2, and a flushing assembly 4 inside the outer sheath 2. The flushing assembly 4 includes a flushing tube 401 located inside the outer sheath 2. The front end of the outer sheath 2 is closed by an end plate 201. One end of the flushing tube 401 is connected to the end plate 201. A liquid inlet 402 is provided at the top of the handle 1, and the other end of the flushing tube 401 is connected to the bottom of the liquid inlet 402.

[0026] It should be noted that a flushing hole 202 is provided on the end plate 201. The diameter of the flushing hole 202 is the same as the inner diameter of the flushing pipe 401. The flushing pipe 401 and the flushing hole 202 are coaxially connected. Both the flushing pipe 401 and the outer sheath 2 are made of insulating rubber.

[0027] It should be noted that flushing fluid, usually saline, can be injected through the inlet 402 at the top of the handle 1. The flushing fluid flows along the flushing tube 401 and reaches the target area through the flushing hole 202 on the end plate 201 to flush and clean the area, thereby obtaining a clearer view or removing foreign objects.

[0028] Please refer to the attached document carefully. Figure 2As shown, the handle 1 includes a mounting tube 101, which is a hollow cylindrical structure with openings at the top and bottom. A fixed handle 102 is provided at the top of the mounting tube 101, and an anti-slip pad 103 is provided on the fixed handle 102. A movable handle 104 is fitted onto the mounting tube 101, and a rotating head 105 is provided at the bottom of the mounting tube 101.

[0029] It should be noted that the surface of the installation tube 101 is provided with a sliding groove 106, and the moving handle 104 slides up and down on the installation tube 101 through the sliding groove 106. An electrosurgical interface 107 is provided in the lower part of the installation tube 101. The moving handle 104 is connected to the end of the traction wire 3. By moving the moving handle 104 up and down, the loop 301 at the front end of the traction wire 3 is enlarged or reduced, allowing for the placement and removal of the lesion. The electrosurgical interface 107 can be connected to a high-frequency electrosurgical unit to energize the traction wire 3 and the loop 301, enabling more effective removal of the lesion. Furthermore, if bleeding occurs after removal, the high-frequency electrosurgical unit can respond quickly and perform electrocoagulation to stop the bleeding.

[0030] It should be noted that the rotating head 105 is rotatably connected to the bottom of the mounting tube 101 via a bearing. The rotating head 105 is provided with anti-slip texture 108, and the bottom of the rotating head 105 is connected to the outer sheath tube 2. During the operation, the rotating head 105 can be held with one hand, and the handle 1 can be rotated. Since the traction line 3 is connected inside the handle 1, the traction line 3 will rotate with the rotation of the handle 1, thereby adjusting the angle of the snare 301 and allowing the snare 301 to be better placed on the lesion.

[0031] Please refer to the attached document carefully. Figure 3 , 4 As shown, a through hole 203 is provided on the end plate 201. The diameter of the through hole 203 is larger than the diameter of the traction line 3. The end of the traction line 3 passes through the through hole 203 and the rotating head 105 and is connected to the moving handle 104. The front end of the traction line 3 passes through the through hole 203 to form a loop 301. The loop 301 is located outside the outer sheath tube 2. The loop 301 includes a working section 302 and a non-working section 303. The working section 302 is provided with a cutter 304, and the non-working section 303 is provided with a groove 305.

[0032] It should be noted that the cutter 304 and the groove 305 are matched, which can more effectively remove smaller lesions. When the moving handle 104 moves upward, the traction line 3 also moves upward, the snare 301 will contract, and the working section 302 and the non-working section 303 will move into the outer sheath 2 through the through hole 203. Since the cutter 304 and the groove 305 are matched, there will be no interference in this process.

[0033] The specific operation method of this utility model is as follows:

[0034] Hold the fixed handle 102 and move the snare through the endoscope to the vicinity of the lesion to be excised. First, inject the irrigation fluid (usually physiological saline) into the inlet 402. The irrigation fluid flows along the irrigation tube 401 and irrigates the lesion through the irrigation hole 202 on the end plate 201 to obtain a clearer view or remove foreign objects. Move the moving handle 104 down along the slide 106 to expand the snare 301. Then, pinch the rotating head 105 and rotate the handle 1 to adjust the snare 301 to a suitable angle. Place the snare 301 on the lesion. Then, move the moving handle 104 up along the slide 106 to tighten the snare 301. The lesion is excised under the action of the cutter 304 and the groove 305 on the snare 301. This method is suitable for smaller lesions. For larger lesions, after irrigation, it is necessary to connect to the high-frequency electrosurgical unit through the electrosurgical interface 107, and energize the traction wire 3 and the loop 301. Repeat the above operation. Once bleeding occurs, the high-frequency electrosurgical unit can respond quickly and electrocoagulate the bleeding site to stop the bleeding.

[0035] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. An endoscope snare structure, comprising a handle (1), characterized in that, The handle (1) is connected to an outer sheath (2) at the front end. The outer sheath (2) is provided with a traction line (3) and a flushing assembly (4). The flushing assembly (4) includes a flushing tube (401), which is located inside the outer sheath (2). The front section of the outer sheath (2) is closed by an end plate (201). One end of the flushing tube (401) is connected to the end plate (201). The top of the handle (1) is provided with a liquid inlet (402), and the other end of the flushing tube (401) is connected to the bottom of the liquid inlet (402).

2. The endoscope snare structure according to claim 1, characterized in that, The end plate (201) is provided with a flushing hole (202), the diameter of which is the same as the inner diameter of the flushing pipe (401), and the flushing pipe (401) is coaxially connected to the flushing hole (202).

3. The endoscope snare structure according to claim 1, characterized in that, The handle (1) includes a mounting tube (101), which is a hollow cylindrical structure with openings at the top and bottom. A fixed handle (102) is provided at the top of the mounting tube (101), and an anti-slip pad (103) is provided on the fixed handle (102). A movable handle (104) is fitted on the mounting tube (101), and a rotating head (105) is provided at the bottom of the mounting tube (101).

4. The endoscope snare structure according to claim 3, characterized in that, The mounting tube (101) has a groove (106) on its surface. The movable handle (104) slides up and down on the mounting tube (101) through the groove (106). The mounting tube (101) has an electric knife interface (107) in its lower part.

5. The endoscope snare structure according to claim 3, characterized in that, The rotating head (105) is rotatably connected to the bottom of the mounting tube (101) via a bearing. The rotating head (105) is provided with anti-slip texture (108), and the bottom of the rotating head (105) is connected to the outer sheath tube (2).

6. The endoscope snare structure according to claim 5, characterized in that, The end plate (201) has a through hole (203) with a diameter larger than that of the traction line (3). The end of the traction line (3) passes through the through hole (203) and the rotating head (105) and is connected to the moving handle (104). The front end of the traction line (3) passes through the through hole (203) to form a loop (301), which is located outside the outer sheath (2).

7. The endoscope snare structure according to claim 6, characterized in that, The snare (301) includes a working section (302) and a non-working section (303), the working section is provided with a cutter (304), and the non-working section (303) is provided with a groove (305).

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