Digestive endoscope loop ligature equipment capable of turning
By designing a digestive endoscope ligation device with an outer cylinder, inner cylinder, push cylinder, and turning head, and utilizing an electric push rod and elastic structure, the problems of slippage and size adaptability of the ligation device were solved, and the precise pushing of the elastic rubber ring was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 上海市松江区泗泾医院
- Filing Date
- 2024-12-27
- Publication Date
- 2026-05-05
AI Technical Summary
Existing ligation equipment is prone to slippage when placing elastic rubber bands and is difficult to adapt to the size limitations of different patient areas, making it difficult to fit the elastic rubber bands onto the patient.
A digestive endoscopy ligation device comprising an outer cylinder, an inner cylinder, a pusher cylinder, and a directional head was designed. Through the cooperation of an electric pusher and an elastic structure, the pusher flap can move along the limiting rod toward the same axis, accurately pushing the elastic rubber ring to the designated patient area.
It effectively prevents the elastic rubber ring from falling off, ensures its correct use, adapts to the size of different patient areas, and achieves precise fitting of the elastic rubber ring.
Smart Images
Figure CN224193528U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, specifically to a steerable digestive endoscope ligation device. Background Technology
[0002] Endoscopic ligation is a surgical procedure that uses elastic rubber bands to ligate the roots of varicose veins under endoscopic guidance, causing ischemia and necrosis to achieve hemostasis and prevent rebleeding. This procedure is a digestive system surgery and is effective for acute or elective treatment of esophageal and gastric variceal bleeding. When treating gastric variceal bleeding, the ligation device needs to be used in conjunction with a digestive endoscope.
[0003] Currently, existing ligation devices are prone to slippage when deploying elastic rubber bands. Furthermore, when reaching the lesion area that can be observed by the digestive endoscope, the elastic rubber band is difficult to apply properly due to the size limitations of different lesion areas. Utility Model Content
[0004] To address the problem that existing ligation devices are inconvenient to use, this invention provides a steerable endoscopic ligation device.
[0005] In view of the above problems, the technical solution proposed by this utility model is as follows:
[0006] A steerable endoscopic ligation device includes an outer cylinder with a circular hole at one end. A cross groove is formed on the inner wall of the circular hole, and an inner cylinder is disposed inside the cross groove. An elastic rubber ring is fitted on the outer wall of the inner cylinder. A push cylinder is provided on the outer wall of the outer cylinder. The push cylinder includes a movable cylinder, a compression cylinder, and a push flap. The movable cylinder is slidably connected to the outer wall of the outer cylinder. One end of the movable cylinder is connected to the compression cylinder. A plurality of limiting rods are connected to the inner wall of the compression cylinder. The outer wall of the push flap has a hole that slides against one end of the limiting rod. A spring is fitted on the outer wall of the limiting rod. An angle block is installed on the side of the push flap near the elastic rubber ring.
[0007] Furthermore, an electric push rod is installed inside the outer cylinder, and a push block is connected to the output end of the electric push rod. The push block is slidably connected inside the circular hole.
[0008] The advantage of adopting the above-mentioned further solution is that the push block is pushed to slide inside the circular hole by the output end of the electric push rod, so that it can squeeze multiple sliders to separate and move.
[0009] Furthermore, the inner cylinder includes a cylindrical flap, one end of which is connected to a slider. The slider is slidably connected inside the cross groove. The slider and the push block are respectively provided with inclined surfaces on their adjacent sides, and the two sets of inclined surfaces fit together.
[0010] The advantage of adopting the above-mentioned further solution is that, by setting the inclined surface, it is convenient for the push block to push the sliders at different positions to move synchronously.
[0011] Furthermore, an elastic telescopic rod is installed inside the cross groove, and one end of the elastic telescopic rod is connected to one side of the slider.
[0012] The beneficial effect of adopting the above-mentioned further solution is that, through the elastic action of the elastic telescopic rod on the slider, the slider can drive the cylinder petals to move together.
[0013] Furthermore, the pusher flap has a reverse inclined surface on the side near the moving cylinder.
[0014] The beneficial effect of adopting the above-mentioned further solution is that, by setting the reverse slope, the pusher can cross the dimensional difference step between the inner and outer cylinders when it moves in the reverse reset direction.
[0015] Furthermore, one end of the outer cylinder is provided with a steering head, the steering head includes a first fixed seat, one end of the first fixed seat is hinged to a longitudinal swing frame, one side of the longitudinal swing frame is fixedly connected to a second fixed seat, and one side of the second fixed seat is hinged to a transverse swing frame.
[0016] The beneficial effect of adopting the above-mentioned further scheme is that, through the combined use of longitudinal swing frames, the steering head can swing in different directions.
[0017] Furthermore, one side of the transverse swing frame is fixedly connected to one side of the outer cylinder.
[0018] Furthermore, the pusher flap and the cylindrical flap are on the same axis, and the inner wall of the pusher flap is parallel to the outer wall of the cylindrical flap.
[0019] The beneficial effect of adopting the above-mentioned further solution is that, through the positional relationship between the pusher flap and the cylinder flap, it is beneficial for the pusher to accurately push the elastic rubber ring for movement.
[0020] Compared with the prior art, the beneficial effects of this utility model are:
[0021] This steerable endoscopic ligation device effectively prevents the elastic rubber ring from detaching through the cooperation of the inner cylinder and the push cylinder, thus ensuring the correct use of the elastic rubber ring. Specifically, the moving cylinder drives the compression cylinder to move in position until the push flap in the compression cylinder contacts the inner cylinder. The elastic compression of the push flap by the spring causes the push flap to converge and move along the limiting rod towards the same axis until the push flap is completely attached to the outside of the inner cylinder. The moving cylinder continues to push the push flap so that the inclined block on one side contacts the elastic rubber ring and pushes it into the designated patient area, thereby detaching it from the inner cylinder. Attached Figure Description
[0022] Figure 1 A perspective view of a steerable digestive endoscopy ligation device provided by this utility model;
[0023] Figure 2 A schematic diagram of the outer cylinder structure of a steerable digestive endoscopy ligation device provided by this utility model;
[0024] Figure 3 A cross-sectional view of the pusher structure of a steerable digestive endoscopy ligation device provided by this utility model;
[0025] Figure 4 A cross-sectional view of the inner cylinder structure of a steerable digestive endoscopy ligation device provided by this utility model;
[0026] Figure 5 A schematic diagram of the steering head structure of a steerable digestive endoscopy ligation device provided by this utility model.
[0027] In the diagram: 100, outer cylinder; 200, push cylinder; 2001, moving cylinder; 2002, compression cylinder; 2003, push flap; 2004, tilting block; 2005, reverse inclined plane; 2006, limiting rod; 2007, spring; 300, inner cylinder; 3001, cylinder flap; 3002, slider; 3003, elastic telescopic rod; 400, elastic rubber ring; 500, steering head; 5001, first fixed seat; 5002, longitudinal swing frame; 5003, second fixed seat; 5004, transverse swing frame; 600, round hole; 700, cross groove; 800, electric push rod; 900, push block. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] Example 1
[0030] Please see Figures 1-5 This utility model provides a technical solution: a steerable digestive endoscopy ligation device, including an outer cylinder 100, with a circular hole 600 on one side of the outer cylinder 100. A cross groove 700 is formed on the inner wall of the circular hole 600, and an inner cylinder 300 is located inside the cross groove 700. An elastic rubber ring 400 is fitted onto the outer wall of the inner cylinder 300. A pusher cylinder 200 is provided on the outer wall of the outer cylinder 100. The pusher cylinder 200 includes a movable cylinder 2001, a compression cylinder 2002, and a pusher flap 2003. The movable cylinder 2001 is slidably connected to the outer wall of the outer cylinder 100. One end of the movable cylinder 2001 is connected to the compression cylinder 2002. A plurality of limiting rods 2006 are connected to the inner wall of the compression cylinder 2002. The outer wall of the pusher flap 2003 has a slidable joint that slides against one end of the limiting rods 2006. The movable hole has a spring 2007 sleeved on the outer wall of the limiting rod 2006. The pusher 2003 has an inclined block 2004 installed on the side near the elastic rubber ring 400. The moving cylinder 2001 drives the compression cylinder 2002 to move until the pusher 2003 in the compression cylinder 2002 contacts the inner cylinder 300. The spring 2007 elastically squeezes the pusher 2003, causing the pusher 2003 to converge and move along the limiting rod 2006 toward the same axis until the pusher 2003 is completely attached to the outside of the inner cylinder 300. The moving cylinder 2001 continues to push the pusher 2001, so that the inclined block 2004 on one side of the pusher 2003 contacts the elastic rubber ring 400 and pushes it into the designated lesion area, thereby detaching it from the inner cylinder 300.
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0032] Example 2
[0033] Please see Figures 1-5As one embodiment of this utility model, further, an electric push rod 800 is installed inside the outer cylinder 100. The output end of the electric push rod 800 is connected to a push block 900, which is slidably connected inside the circular hole 600. The output end of the electric push rod 800 pushes the push block 900 to slide inside the circular hole 600, so that it can squeeze multiple sliders 3002 for separation and movement. The inner cylinder 300 includes a cylinder petal 3001, one end of which is connected to a slider 3002, which is slidably connected to the cross. Inside the groove 700, the slider 3002 and the push block 900 are respectively provided with inclined surfaces on their adjacent sides. The two sets of inclined surfaces fit together. By setting the inclined surfaces, it is convenient for the push block 900 to push the slider 3002 at different positions to move synchronously. An elastic telescopic rod 3003 is installed inside the cross groove 700. One end of the elastic telescopic rod 3003 is connected to one side of the slider 3002. Through the elastic action of the elastic telescopic rod 3003 on the slider 3002, the slider 3002 can drive the cylinder 3001 to move together.
[0034] Example 3
[0035] Please see Figures 1-5 As an embodiment of this utility model, further, the pusher 2003 is provided with a reverse inclined surface 2005 on the side near the moving cylinder 2001. The reverse inclined surface 2005 allows the pusher 2003 to cross the dimensional difference step between the inner cylinder 300 and the outer cylinder 100 when it moves in the reverse reset direction. One end of the outer cylinder 100 is provided with a turning head 500, which includes a first fixed seat 5001. One end of the first fixed seat 5001 is hinged to a longitudinal swing frame 5002, and one side of the longitudinal swing frame 5002 is fixedly connected to a second fixed seat 500. 03. A transverse swing frame 5004 is hinged to one side of the second fixed seat 5003. Through the cooperation of the longitudinal swing frame 5002, the steering head 500 can swing in different directions. One side of the transverse swing frame 5004 is fixedly connected to one side of the outer cylinder 100. The pusher 2003 and the cylinder 3001 are on the same axis, and the inner wall of the pusher 2003 is parallel to the outer wall of the cylinder 3001. The positional relationship between the pusher 2003 and the cylinder 3001 is conducive to the pusher 200 accurately pushing the elastic rubber ring 400 to move.
[0036] Specifically, the working principle of this steerable endoscopic ligation device is as follows: First, check the structure of the ligation device for integrity. After ensuring its integrity, insert the ligation device into the endoscope. By manipulating the steering head 500 at the end, the ligation device can move in different directions inside the endoscope until it reaches the lesion area observable by the endoscope. Continue extending the ligation device, causing it to move the elastic rubber ring 400 closer to the lesion area. Then, by activating the electric push rod 800, its output end pushes the push block 900 to move, thereby squeezing and separating multiple sliders 3002. The inclined surface design facilitates the push block 900's movement without... The sliders 3002 in the same position move synchronously until the multiple cylinder petals 3001 separate to the required size. Then, the moving cylinder 2001 drives the compression cylinder 2002 to move in position until the push petal 2003 in the compression cylinder 2002 contacts the inner cylinder 300. The spring 2007 elastically squeezes the push petal 2003, causing the push petal 2003 to converge and move along the limiting rod 2006 toward the same axis until the push petal 2003 is completely attached to the outside of the inner cylinder 300. The moving cylinder 2001 continues to push the push petal 2001, so that the tilting block 2004 on one side of the push petal 2003 contacts the elastic rubber ring 400 and pushes it into the designated lesion area, thereby separating it from the inner cylinder 300.
Claims
1. A steerable digestive endoscopy ligation device, characterized in that, The device includes an outer cylinder (100), one of which has a circular hole (600). A cross groove (700) is formed on the inner wall of the circular hole (600). An inner cylinder (300) is located inside the cross groove (700). An elastic rubber ring (400) is fitted onto the outer wall of the inner cylinder (300). A pusher cylinder (200) is provided on the outer wall of the outer cylinder (100). The pusher cylinder (200) includes a movable cylinder body (2001), a compression cylinder body (2002), and a pusher flap (2003). The outer wall of the movable cylinder (2001) is slidably connected to the outer wall of the compression cylinder (2002). The inner wall of the compression cylinder (2002) is connected to several limiting rods (2006). The outer wall of the pusher (2003) is provided with a hole that slides with one end of the limiting rod (2006). The outer wall of the limiting rod (2006) is fitted with a spring (2007). The pusher (2003) is equipped with an inclination block (2004) on the side near the elastic rubber ring (400).
2. The steerable digestive endoscopy ligation device according to claim 1, characterized in that, An electric push rod (800) is installed inside the outer cylinder (100), and a push block (900) is connected to the output end of the electric push rod (800). The push block (900) is slidably connected inside the circular hole (600).
3. The steerable digestive endoscopy ligation device according to claim 2, characterized in that, The inner cylinder (300) includes a cylinder flap (3001), one end of which is connected to a slider (3002). The slider (3002) is slidably connected inside the cross groove (700). The slider (3002) and the adjacent side of the push block (900) are respectively provided with inclined surfaces, and the two sets of inclined surfaces are in contact with each other.
4. The steerable digestive endoscopy ligation device according to claim 3, characterized in that, An elastic telescopic rod (3003) is installed inside the cross groove (700), and one end of the elastic telescopic rod (3003) is connected to one side of the slider (3002).
5. The steerable digestive endoscopy ligation device according to claim 1, characterized in that, The pusher (2003) has a reverse slope (2005) on the side near the moving cylinder (2001).
6. The steerable digestive endoscopy ligation device according to claim 1, characterized in that, One end of the outer cylinder (100) is provided with a steering head (500). The steering head (500) includes a first fixed seat (5001). One end of the first fixed seat (5001) is hinged to a longitudinal swing frame (5002). A second fixed seat (5003) is fixedly connected to one side of the longitudinal swing frame (5002). A transverse swing frame (5004) is hinged to one side of the second fixed seat (5003).
7. A steerable digestive endoscopy ligation device according to claim 6, characterized in that, One side of the horizontal swing frame (5004) is fixedly connected to one side of the outer cylinder (100).
8. The steerable digestive endoscopy ligation device according to claim 3, characterized in that, The pusher flap (2003) and the tube flap (3001) are on the same axis, and the inner wall of the pusher flap (2003) is parallel to the outer wall of the tube flap (3001).