Device for taking out ureteral stent in bladder

Abstract

The invention relates to the technical field of ureteral stents, and discloses an intra-bladder ureteral stent taking-out device which comprises a device body, and the device body comprises a forceps body taking-out assembly used for clamping and taking out a ureteral stent; the inner supporting assembly is used for supporting the urethra; the injection limiting assembly is used for injecting normal saline and limiting the inner supporting assembly; the device body is inserted into the bladder through the urethra, and the tail end of the ureteral stent is positioned through external imaging equipment such as a cystoscope or scale marks arranged in the device body. The inner supporting plate is driven to be unfolded by moving the stent, and the urethra and adhesion tissue around the stent are expanded. The urethral tube support is convenient to hook and take out, the problem of urethral injury caused in the hooking process is avoided, the inner supporting plate is made of flexible materials, pressure is evenly dispersed during expansion, and tissue injury caused by local stress concentration is avoided.

Description

Technical Field

[0001] The invention relates to the field of ureteral stents, and in particular to an intravesical ureteral stent removal device. Background Art

[0002] In urology, when patients undergo surgery for kidney stones or ureteral stenosis, ureteral stents are often required to prevent scar stenosis caused by postoperative ureteral trauma repair. At present, all ureteral stents, regardless of their material, cannot be left in the body for a long time and need to be removed in the hospital after a certain period of time.

[0003] The existing utility model patent (CN216257678U) proposes a ureteral stent removal forceps, including a first clamp body and a second clamp body, the first clamp body and the second clamp body are cross-rotatably connected by a rotating pin, the first clamp body includes a holding ring, a clamp arm and a clamping part, the opposite ends of the clamp arm are respectively fixedly connected to the holding ring and the clamping part; the end of the clamping part is bent to form a hooking assembly, the hooking assembly includes a hooking part connected to the clamping part, and a reverse hook part integrally connected to the hooking part, the clamping part is combined with the hooking part and the reverse hook part to form a clamping space with an opening facing the holding ring; the side wall of the hooking part located in the clamping space is provided with a limiting card slot, when the hooking part hooks the ureteral stent outward, the ureteral stent can be stuck in the limiting card slot and taken out through the hooking part. The technical problem of cumbersome operation and high cost in the prior art of removing the ureteral stent is solved.

[0004] The above cited patent hooks the ureteral stent by means of a first clamp and a second clamp, but in actual hooking, the ureter is not expanded, which may easily cause urethral damage during the hooking process. Based on this, we propose an intravesical ureteral stent removal device. Summary of the invention

[0005] In order to solve the technical problem that urethra damage is easily caused during the hooking process, the present invention provides an intravesical ureteral stent removal device.

[0006] The present invention is implemented by the following technical solution: an intravesical ureteral stent removal device, comprising a device body, the device body comprising: The clamp removal component is used to clamp and remove the ureteral stent; the inner support component is used to support the urethra; the injection limit component is used to inject physiological saline and limit the inner support component; The device body is inserted into the bladder through the urethra, and the tail end of the ureteral stent is located by external imaging equipment such as a cystoscope or a scale mark built into the device body.

[0007] The pliers removal assembly includes a first handle and a second handle, the first handle and the second handle are hinged through a deflection axis; one end of a first shaft is connected to the outer side of the deflection axis, the other end of the first shaft is connected to a rotation axis, and the first shaft and the second shaft are hinged through the rotation axis; the bottom end of the second shaft is connected to a clamping frame, a connecting sleeve is sleeved on the surface of the clamping frame, and a clamping block is fixed to the end of the clamping frame.

[0008] The clamping frame is divided into two ends, one end of one group of clamping frames is connected with the movable plate, and one end of the other group of clamping frames is connected with the receiving platform.

[0009] A mounting plate is fixedly installed at the bottom end of the connecting sleeve, one end of a connecting rod is fixedly connected to the outer side of the mounting plate, the other end of the connecting rod is connected to a fixing frame, and a positioning tooth is provided on the surface of the fixing frame.

[0010] The first handle and the second handle are gripped and pressed, and the first handle and the second handle drive the first shaft rod and the second shaft rod to move by deflecting the axis, and the second shaft rod drives the clamping frame to move, and the clamping frame drives the clamping block to clamp toward the fixing frame, and the clamping block and the fixing frame form a closed clamping state, and the fixing frame is provided with positioning teeth, and the positioning teeth position and clamp the ureteral stent, and the positioning teeth of the fixing frame lock the clamping angle to prevent the stent from slipping during operation.

[0011] Among them, the inner support assembly includes a movable plate, the inner side of the movable plate is connected to one end of the telescopic rod, and the other end of the telescopic rod is connected to a receiving platform; the surface of the movable plate is connected to a connecting axis block, the connecting axis block is connected to one end of the moving bracket, and the other end of the moving bracket is connected to the inner support plate for supporting the urethra; the middle end of the moving bracket is connected to a first adjustment axis, the outer side of the first adjustment axis is connected to an adjustment rod, and the other end of the adjustment rod is connected to a second adjustment axis.

[0012] When the clamping frame is driven to move, the clamping frame drives the movable plate to abut the connecting sleeve, and the movable plate compresses the telescopic rod inward, and the telescopic rod is extended and retracted, and the telescopic rod drives the second adjustment axis seat to move, and the second adjustment axis seat drives the adjustment rod to deflect, and the adjustment rod then pushes the first adjustment axis and the moving bracket outward, and the moving bracket drives the inner support plate to expand, and open the urethra and the adhesion tissue around the bracket.

[0013] The injection limiter assembly includes a pressure rod, the top of which is connected to a piston, which is inserted into the injection liquid cavity, and the outside of the injection liquid cavity is connected to a liquid injection head. The surface of the injection liquid cavity is connected to one end of a mounting frame facing outward, and the other end of the mounting frame is fixedly connected to a limiter bracket for a limiter adjustment rod.

[0014] As a further improvement of the above solution, the inner support component remains in a contracted state when not activated to avoid scratching the urethral mucosa.

[0015] As a further improvement of the above solution, the movable plate drives the pressure rod to push the piston downward, so that the physiological saline in the injection liquid cavity is sprayed out through the injection head.

[0016] As a further improvement of the above solution, the inner support plate is made of a flexible material to evenly disperse the pressure during expansion to avoid local stress concentration and damage to tissues.

[0017] As a further improvement of the above scheme, normal saline is used to flush the urethra, remove secretions or debris, and reduce the microbial load. At the same time, normal saline is non-irritating and highly safe.

[0018] As a further improvement of the above solution, an opening is provided on the surface of the injection liquid cavity, and physiological saline is stored inside the injection liquid cavity.

[0019] As a further improvement of the above solution, the limit bracket simultaneously limits the travel of the adjustment rod to prevent excessive expansion.

[0020] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention drives the inner support plate to expand through the moving support, and opens the urethra and the adhesion tissue around the support. It is convenient to hook out the urethral tube support, and avoid the problem of urethral damage during the hooking process. The inner support plate is made of flexible material, and the pressure is evenly dispersed during expansion to avoid local stress concentration and damage to tissue.

[0021] 2. When removing the ureteral stent, the present invention uses physiological saline to flush the urethra, remove secretions or debris, and reduce the microbial load. At the same time, the physiological saline is non-irritating and highly safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the structural section of the middle part; Figure 3 For the present invention Figure 2 A magnified schematic diagram of the structure of the middle B region; Figure 4 For the present invention Figure 1 Schematic diagram of the structural section of the middle part; Figure 5 This is a schematic diagram of the structure of the inner support assembly of the present invention; Figure 6 This is a schematic diagram of the connection structure of the injection limit assembly of the present invention; Figure 7 It is a schematic diagram of the piston connection structure of the present invention.

[0023] Description of main symbols: 1. Device body; 2. Clamp body removal assembly; 21. First grip; 22. Second grip; 23. Deflection axis; 24. First shaft; 25. Second shaft; 26. Rotation axis; 27. Clamping frame; 28. Connecting sleeve; 29. ​​Clamping block; 210. Mounting plate; 211. Connecting rod; 212. Fixing frame; 213. Positioning tooth; 3. Inner support assembly; 31. Movable plate; 32. Telescopic rod; 33. Undertaking platform; 34. Connecting axis block; 35. Movable bracket; 36. Inner support plate; 37. First adjustment axis; 38. Adjustment rod; 39. Second adjustment axis seat; 4. Injection limiter assembly; 41. Pressure rod; 42. Piston; 43. Injection liquid chamber; 44. Injection head; 45. Mounting bracket; 46. Limiter bracket. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0025] Embodiment 1: Please combine Figure 1-Figure 5 This embodiment provides an intravesical ureteral stent removal device, including a device body 1, the device body 1 includes: A clamp removal component 2, used for clamping and removing the ureteral stent; An inner support component 3, used for supporting the urethra; An injection limiting component 4 is used for injecting physiological saline and limiting the inner support component 3; It should be noted that the device body 1 is inserted into the bladder through the urethra, and the tail end of the ureteral stent is located by an external imaging device such as a cystoscope or a scale mark built into the device body 1. The inner support component 3 remains in a contracted state when not activated to avoid scratching the urethral mucosa.

[0026] The clamp removal assembly 2 includes a first handle 21 and a second handle 22, and the first handle 21 and the second handle 22 are hinged via a deflection axis 23; One end of a first shaft 24 is connected to the outer side of the deflection shaft 23, and the other end of the first shaft 24 is connected to a rotation shaft 26. The first shaft 24 and the second shaft 25 are hingedly connected via the rotation shaft 26. The bottom end of the second shaft 25 is connected to a clamping frame 27 , a connecting sleeve 28 is sleeved on the surface of the clamping frame 27 , and a clamping block 29 is fixed to the end of the clamping frame 27 .

[0027] The clamping frames 27 are divided into two ends, one end of one set of the clamping frames 27 is connected to the movable plate 31 , and one end of the other set of the clamping frames 27 is connected to the receiving platform 33 .

[0028] A mounting plate 210 is fixedly mounted on the bottom end of the connecting sleeve 28 , one end of a connecting rod 211 is fixedly connected to the outer side of the mounting plate 210 , and the other end of the connecting rod 211 is connected to a fixing frame 212 , and a positioning tooth 213 is provided on the surface of the fixing frame 212 .

[0029] More specifically, the first handle 21 and the second handle 22 are squeezed, and the first handle 21 and the second handle 22 drive the first shaft 24 and the second shaft 25 to move through the deflection axis 23, and the second shaft 25 drives the clamping frame 27 to move, and the clamping frame 27 drives the clamping block 29 to perform a clamping movement toward the fixed frame 212, and the clamping block 29 and the fixed frame 212 form a closed clamping state, and the fixed frame 212 is provided with a positioning tooth 213, and the positioning tooth 213 positions and clamps the ureteral stent, and the positioning tooth 213 of the fixed frame 212 locks the clamping angle to prevent the stent from slipping during operation.

[0030] The inner support assembly 3 includes a movable plate 31, one end of a telescopic rod 32 is connected to the inner side of the movable plate 31, and the other end of the telescopic rod 32 is connected to a receiving platform 33; The surface of the movable plate 31 is connected with a connecting axis block 34, the connecting axis block 34 is connected to one end of a moving bracket 35, and the other end of the moving bracket 35 is connected with an inner support plate 36 for supporting the urethra; The middle end of the moving bracket 35 is connected to a first adjustment axis 37 , the outer side of the first adjustment axis 37 is connected to an adjustment rod 38 , and the other end of the adjustment rod 38 is connected to a second adjustment axis 39 .

[0031] Specifically, when the clamping frame 27 is driven to move, the clamping frame 27 drives the movable plate 31 to abut against the connecting sleeve 28, and the movable plate 31 compresses the telescopic rod 32 inward, and the telescopic rod 32 is extended and retracted, and the telescopic rod 32 drives the second adjustment axis seat 39 to move, and the second adjustment axis seat 39 drives the adjustment rod 38 to deflect, and the adjustment rod 38 then pushes the first adjustment axis 37 and the moving bracket 35 outward, and the moving bracket 35 drives the inner support plate 36 to expand, thereby stretching the urethra and the adhesion tissue around the bracket.

[0032] Furthermore, the inner support plate 36 is made of a flexible material to evenly disperse the pressure during expansion to avoid local stress concentration and damage to tissues.

[0033] Example 2 See also Figure 6-Figure 7 , Embodiment 2 further proposes an injection limiter assembly 4 to flush the urethra; The injection limiting assembly 4 includes a pressure rod 41 , a top end of which is connected to a piston 42 , the piston 42 is inserted into an injection liquid chamber 43 , and an injection head 44 is connected to the outside of the injection liquid chamber 43 .

[0034] While the movable plate 31 is moving and compressing, the movable plate 31 drives the pressure rod 41 to push the piston 42 downward, and the physiological saline in the injection liquid cavity 43 is ejected through the injection head 44 ( Figure 6-7 ). Normal saline is used to flush the urethra, remove secretions or debris, and reduce the microbial load. At the same time, normal saline is non-irritating and highly safe.

[0035] It should be noted that an opening is formed on the surface of the injection liquid cavity 43 , and physiological saline is stored inside the injection liquid cavity 43 .

[0036] One end of a mounting bracket 45 is connected to the outside of the surface of the injection liquid cavity 43 , and the other end of the mounting bracket 45 is fixedly connected to a limiting bracket 46 for limiting the adjusting rod 38 .

[0037] Specifically, the limiting bracket 46 simultaneously limits the travel of the adjusting rod 38 to prevent excessive expansion.

[0038] The specific implementation steps of the present invention are: 1. Device insertion and positioning Steps: insert the device body 1 into the bladder through the urethra, and locate the tail end of the ureteral stent by using an external imaging device such as a cystoscope or a scale mark built into the device body 1.

[0039] The inner support component 3 remains in a contracted state when not activated to avoid scratching the urethral mucosa.

[0040] 2. Bracket clamping and locking Steps: Grip and press the first grip 21 and the second grip 22, the first grip 21 and the second grip 22 drive the first shaft 24 and the second shaft 25 to move through the deflection axis 23, the second shaft 25 drives the clamping frame 27 to move, the clamping frame 27 drives the clamping block 29 to clamp toward the fixing frame 212, the clamping block 29 and the fixing frame 212 form a closed clamping state, the fixing frame 212 is provided with a positioning tooth 213, the positioning tooth 213 positions and clamps the ureteral stent, the positioning tooth 213 of the fixing frame 212 locks the clamping angle to prevent the stent from slipping during operation ( Figure 3 ).

[0041] 3.Urethra support and adhesion separation Steps: When the clamping frame 27 is driven to move, the clamping frame 27 drives the movable plate 31 to abut the connecting sleeve 28, the movable plate 31 compresses the telescopic rod 32 inward, the telescopic rod 32 is extended, the telescopic rod 32 drives the second adjustment axis seat 39 to move, the second adjustment axis seat 39 drives the adjustment rod 38 to deflect, the adjustment rod 38 then pushes the first adjustment axis 37 and the moving bracket 35 outward, the moving bracket 35 drives the inner support plate 36 to expand, and the adhesion tissue around the urethra and the bracket is opened. The inner support plate 36 is made of a flexible material, and the pressure is evenly dispersed during expansion to avoid local stress concentration and damage to the tissue.

[0042] The limiting bracket 46 simultaneously limits the travel of the adjusting rod 38 to prevent excessive expansion.

[0043] 4. Disinfection and flushing of the urethra While the movable plate 31 is moving and compressing, the movable plate 31 drives the pressure rod 41 to push the piston 42 downward, and the physiological saline in the injection liquid cavity 43 is ejected through the injection head 44 ( Figure 6-7 ). Normal saline is used to flush the urethra, remove secretions or debris, and reduce the microbial load. At the same time, normal saline is non-irritating and highly safe.

[0044] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An intravesical ureteral stent removal device, comprising a device body (1), characterized in that: The device body (1) comprises: A clamp removal assembly (2) for clamping and removing a ureteral stent; An inner support component (3) for supporting the urethra; An injection limiting component (4) is used for injecting physiological saline and limiting the position of the inner support component (3); The inner support assembly (3) comprises a movable plate (31), the inner side of the movable plate (31) is connected to one end of a telescopic rod (32), and the other end of the telescopic rod (32) is connected to a receiving platform (33); A connecting axis block (34) is connected to the surface of the movable plate (31), the connecting axis block (34) is connected to one end of a moving bracket (35), and the other end of the moving bracket (35) is connected to an inner support plate (36) for supporting the urethra; The middle end of the motion bracket (35) is connected to a first adjustment axis (37), the outer side of the first adjustment axis (37) is connected to an adjustment rod (38), and the other end of the adjustment rod (38) is connected to a second adjustment axis (39).

2. The intravesical ureteral stent removal device according to claim 1, characterized in that: The clamp removal assembly (2) comprises a first handle (21) and a second handle (22), wherein the first handle (21) and the second handle (22) are hingedly connected via a deflection axis (23); One end of a first shaft (24) is connected to the outer side of the deflection shaft (23); the other end of the first shaft (24) is connected to a rotation shaft (26); the first shaft (24) and the second shaft (25) are hingedly connected via the rotation shaft (26); The bottom end of the second shaft (25) is connected to a clamping frame (27), a connecting sleeve (28) is sleeved on the surface of the clamping frame (27), and a clamping block (29) is fixed to the end of the clamping frame (27).

3. The intravesical ureteral stent removal device according to claim 2, characterized in that: A mounting plate (210) is fixedly mounted on the bottom end of the connecting sleeve (28); one end of a connecting rod (211) is fixedly connected to the outside of the mounting plate (210); the other end of the connecting rod (211) is connected to a fixing frame (212); and a positioning tooth (213) is provided on the surface of the fixing frame (212).

4. The intravesical ureteral stent removal device according to claim 1, characterized in that: The injection limiting assembly (4) comprises a pressure rod (41), the top end of the pressure rod (41) is connected to a piston (42), the piston (42) is inserted into the interior of an injection liquid chamber (43), and the outside of the injection liquid chamber (43) is connected to a liquid injection head (44).

5. The intravesical ureteral stent removal device according to claim 4, characterized in that: An opening is provided on the surface of the injection liquid cavity (43), and physiological saline is stored inside the injection liquid cavity (43).

6. The intravesical ureteral stent removal device according to claim 4, characterized in that: One end of a mounting frame (45) is connected outwardly to the surface of the injection liquid cavity (43), and the other end of the mounting frame (45) is fixedly connected to a limiting bracket (46) for limiting the adjustment rod (38).

7. The intravesical ureteral stent removal device according to claim 1, characterized in that: The inner support plate (36) is made of a flexible material.

8. The intravesical ureteral stent removal device according to claim 1, characterized in that: The clamping frames (27) are divided into two ends, one end of one group of clamping frames (27) is connected to the movable plate (31), and one end of the other group of clamping frames (27) is connected to the receiving platform (33).

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