Ureteral stent removing device

Abstract

The utility model discloses a ureteral stent removing device which comprises a sheathing canal and grasping forceps. The sheath tube comprises a working tube body, the far end of the working tube body is matched with a human body, a handle end is arranged at the near end of the working tube body, and a bending control mechanism used for controlling the far end of the working tube body to bend is arranged at the handle end. The clamping end of the grasping forceps can penetrate out of the far end of the working tube body, and the control end of the grasping forceps is detachably arranged at the handle end. The urethral catheter has the advantages of being convenient to operate and capable of reducing the urethral injury risk.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a ureteral stent removal device. Background Technology

[0002] After performing intravesical surgeries such as lithotripsy and stone removal, urologists typically place a ureteral stent in the ureter to provide temporary support and drainage, ensuring unobstructed urine flow from the kidneys to the bladder. The ureteral stent needs to be removed after a period of time. Currently, the traditional removal method involves the doctor using a cystoscope or flexible endoscope to locate the curved lower end of the ureteral stent within the bladder, and then using foreign body forceps / biopsy forceps to grasp and remove the stent.

[0003] Currently, manufacturers such as Ruipai, Walker, and Pusheng sell products for intracystic surgery. Common products include reusable cystoscopes and disposable flexible cystoscopes. Reusable cystoscopes are assembled from stainless steel and optical lenses, but the sheath is made of a rigid, straight material that cannot be bent. This causes significant pressure on the male patient's urethra, easily leading to urethral injury and inconvenience for the surgeon. Disposable flexible cystoscopes solve the problem of greater damage associated with reusable cystoscopes, but their cost is too high. Our patent, CN219126903U, discloses a visual ureteral stent removal device. This device uses a camera component installed at the front end of the sheath to create a visual structure, which, combined with forceps, is used to grasp and remove the ureteral stent. This solves the problem of reusable cystoscopes and reduces costs. However, the sheath in this patent is not controllable in its bending, and the operation requires both hands to hold the sheath and the control handle separately, making it inconvenient.

[0004] How to solve the above problems has become an urgent technical issue. Utility Model Content

[0005] The purpose of this invention is to provide a ureteral stent removal device that is easy to operate and can reduce the risk of urethral injury.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a ureteral stent removal device, including a sheath and a grasping forceps; the sheath includes a working tube, the distal end of which fits with the human body and the proximal end of which is provided with a handle end, the handle end is provided with a bending control mechanism for controlling the bending of the distal end of the working tube, the grasping end of the grasping forceps can extend beyond the distal end of the working tube and the control end of the grasping forceps is detachably provided on the handle end.

[0008] Furthermore, the handle end is provided with a coupling position, the proximal end of the gripper is detachably and slidably connected to the coupling position, and the handle end is provided with a gripper channel, the two ends of the gripper channel being connected to the working tube body and the coupling position respectively.

[0009] Furthermore, the gripper includes a control handle and a flexible control arm, wherein the control handle is detachably and slidably connected to the engagement position, the proximal end of the control arm is fixedly connected to the control handle and the distal end of the control arm is rotatably connected to the gripper head, and the control handle is provided with a control button, and the gripper head is connected to the control button via a traction wire.

[0010] Furthermore, the control handle is provided with a push position.

[0011] Furthermore, the gripper also includes a flexible control arm, the proximal end of which is fixedly connected to a control handle and the distal end of which is rotatably connected to a gripper head. The control handle is provided with a control button, and the gripper head is connected to the control button via a traction wire.

[0012] Furthermore, the working tube has a snake-bone structure, and an outer membrane is fitted on the outside of the working tube.

[0013] Furthermore, the working tube is a flexible metal tube.

[0014] Furthermore, the bending control mechanism includes a rolling knob, which is rotatably connected to the handle end and connected to the distal end of the working tube via a pull rope.

[0015] Furthermore, the handle end is connected to at least one Luer interface.

[0016] Furthermore, it also includes a camera and a wireless module. The camera is located at the far end of the working tube and is electrically connected to the wireless module. The wireless module is installed on the handle end and is used to transmit the collected data to an external display instrument.

[0017] Due to the adoption of the above structure, the beneficial effects of this utility model are as follows:

[0018] This invention features a bending control mechanism at the handle end, with the control end of the gripper detachably mounted on the handle end. When a doctor holds the handle end with one hand, the bending control mechanism can be used to bend the distal end of the working tube, effectively reducing the risk of urethral injury. At the same time, the control end of the gripper can be used to control the gripping end to extend beyond the distal end of the working tube for gripping, thus achieving one-handed operation and making operation more convenient.

[0019] The present invention will become clearer from the following description and in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the sheath and gripper of this utility model when they are assembled into one unit;

[0022] Figure 2 This is an exploded view of the structure of this utility model. Detailed Implementation

[0023] 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.

[0024] Please refer to Figure 1 and Figure 2 This utility model provides a ureteral stent removal device, including a sheath and a grasping forceps. The sheath includes a working tube 1, the distal end of which fits with the human body, and the proximal end of the working tube 1 is provided with a handle end 2. The handle end 2 is provided with a bending control mechanism for controlling the bending of the distal end of the working tube 1, thereby enabling the distal end of the working tube 1 to bend along with the urethra, thus reducing the risk of urethral injury. The grasping end of the grasping forceps can extend beyond the distal end of the working tube 1, and the control end of the grasping forceps is detachably provided on the handle end 2. Thus, when the doctor holds the handle end 2 with one hand and pushes the distal end of the working tube 1 forward along the urethra, the distal end of the grasping forceps can be moved synchronously to the desired position. The control end and bending mechanism of the grasping forceps are both located on the handle end 2. When the doctor holds the handle end 2 with one hand, the doctor can control the distal end of the working tube 1 to bend through the bending mechanism, and at the same time, the doctor can control the grasping end of the grasping forceps to extend out of the distal end of the working tube 1 to grasp the ureteral stent through the control end of the grasping forceps. After grasping, the doctor can pull the handle end 2 back to remove the ureteral stent from the body, thus achieving one-handed operation, which is simple and quick.

[0025] In this utility model, the handle end 2 is provided with a coupling position 3, and the proximal end of the gripper is detachably and slidably connected to the coupling position 3. In use, the proximal end of the gripper can slide back and forth along the length direction of the coupling position 3, thereby driving the distal end of the gripper to extend or retract from the distal end of the working tube 1. Furthermore, the handle end 2 is provided with a gripper channel, and the two ends of the gripper channel are respectively connected to the working tube 1 and the coupling position 3, so that the distal end of the gripper can extend out of the distal end of the working tube 1 in sequence through the gripper channel and the working tube 1.

[0026] In this invention, the grasping forceps includes a control handle 4 and a flexible control arm 6. The control handle 4 is detachably and slidably connected to the engagement position 3. The proximal end of the control arm 6 is fixedly connected to the control handle 4, and the distal end of the control arm 6 is rotatably connected to a clamping head 7, forming a gripping end. Furthermore, the control handle 4 is provided with a control button 8, and the clamping head 7 is connected to the control button 8 via a traction wire. Specifically, the control handle 4 and the engagement position 3 can be detachably and slidably connected using a T-shaped groove, a U-shaped slide rail, or similar method. The proximal end of the control arm 6 is connected to the control handle 4, and the control handle 4 is provided with a control button 8, forming the control end of the grasping forceps. The distal end of the control arm 6 is connected to the clamping head 7, forming the gripping end of the grasping forceps. Pressing the control button 8 can actuate the opening and closing of the clamping head 7 via the traction wire, thereby gripping the ureteral stent.

[0027] In this invention, the control handle 4 is provided with a push position 5. The push position 5 is recessed, and when operating, pressing a finger on the push position 5 facilitates pushing the control handle 4 to slide back and forth along the length direction of the engagement position 3.

[0028] In this invention, the working tube 1 has a snake-bone structure, and an outer membrane 9 is fitted over the outside of the working tube 1. The outer membrane 9 is made of a soft polymer material, silicone material, or latex material. It covers the working tube 1, which can improve the smoothness of the outer surface of the snake-bone structure, thereby improving the comfort during use. It can also seal the gaps between the segments of the snake bones, so as not to affect the doctor's performance during operations such as bladder irrigation and suction.

[0029] Optionally, the working tube 1 is a flexible metal tube.

[0030] In summary, the working tube 1 can be any other structure that can be bent under external force. In addition to the snake bone structure and the flexible metal tube, it can also be any other structure that can be bent under external force without affecting the protection scope of this utility model.

[0031] In this invention, the bending control mechanism includes a rolling knob 10, which is rotatably connected to the handle end 2 and connected to the distal end of the working tube 1 via a pull rope. Rotating the rolling knob 10 pulls the distal end of the working tube 1 via the pull rope, thereby achieving the bending control effect.

[0032] In this invention, the handle end 2 is connected to at least one Luer interface 11. The handle end 2 is a hollow structure, or a connecting channel is provided inside the handle end 2, so that the working tube body 1, the handle end 2, and the Luer interface 11 are connected in sequence, thereby facilitating doctors to expand other uses, such as bladder irrigation, suction, bladder biopsy, guidewire placement, etc.; preferably, the Luer interface 11 is a Y-shaped tube, with its first end connected to the handle end 2, the second end used to connect to instruments such as guidewires and forceps, and the third end used to connect to flushing or suction tubing.

[0033] This invention also includes a camera 12 and a wireless module 13. The camera 12 is located at the far end of the working tube 1 and is electrically connected to the wireless module 13. The wireless module 13 is mounted on the handle end 2 and is used to transmit the collected data to an external display instrument, thereby facilitating doctors to observe the patient's internal condition in real time. The wireless module 13 uses Bluetooth, Wi-Fi, 4G, or other methods to transmit data, avoiding the inconvenience of data cables being tangled or knotted.

[0034] In use, the control handle 4 is first installed on the coupling position 3, and the clamp head 7 is inserted into the working tube 1 but does not extend beyond the distal end of the working tube 1. Then, the handle end 2 is held with one hand, and the distal end of the working tube 1 is pushed into the urethra. The bending angle of the distal end of the working tube 1 is adjusted by pushing the rolling knob 10 with the fingers to move the distal end of the working tube 1 along the urethra to the vicinity of the ureteral stent. Then, the push position 5 is pressed with the fingers, and the control handle 4 is pushed forward to slide. The clamp head 7 is pushed out of the distal end of the working tube 1 through the control arm 6. Then, the control handle 4 is pressed with the fingers to open and close the clamp head 7 to clamp the ureteral stent. Finally, the handle end 2 is pulled back to remove the ureteral stent from the body. The operation is simple and quick.

[0035] The preferred embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above. Devices and structures not described in detail herein should be understood as being implemented in a conventional manner within the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of this utility model using the disclosed methods and techniques, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. This does not affect the essential content of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the content of the technical solution of this utility model, still fall within the protection scope of the technical solution of this utility model.

Claims

1. A ureteral stent removal device comprising a sheath tube, a grasping forceps; characterized in that: The sheath comprises a working tube (1), the distal end of the working tube (1) is matched with the human body, and the proximal end of the working tube (1) is provided with a handle end (2), the handle end (2) is provided with a bending control mechanism for controlling the bending of the distal end of the working tube (1), the clamping end of the grabber can pass out of the distal end of the working tube (1), and the control end of the grabber is detachably arranged on the handle end (2).

2. The ureteral stent removal device of claim 1, wherein: The handle end (2) is provided with a combination site (3), the control end of the grabber is detachably and slidably connected with the combination site (3), and the handle end (2) is provided with a grabber channel, two ends of the grabber channel are communicated with the working tube (1) and the combination site (3) respectively.

3. The ureteral stent removal device of claim 2, wherein: The grabber comprises a control handle (4) and a bendable control arm (6), wherein the control handle (4) is detachably and slidably connected with the combination site (3), the proximal end of the control arm (6) is fixedly connected with the control handle (4), the distal end of the control arm (6) is rotatably connected with a pincer head (7), and the control handle (4) is provided with a control button (8), the pincer head (7) is connected with the control button (8) through a traction wire.

4. The ureteral stent removal device of claim 3, wherein: The control handle (4) is provided with a pushing site (5).

5. The ureteral stent removal device of claim 1, wherein: The working tube (1) is a snake bone structure, and an outer layer film (9) is arranged on the outer side of the working tube (1).

6. The ureteral stent removal device of claim 1, wherein: The working tube (1) is a bendable metal tube.

7. A ureteral stent removal device according to claim 5 or 6, characterized in that: The bending control mechanism comprises a rolling knob (10), the rolling knob (10) is rotatably connected with the handle end (2), and the rolling knob (10) is connected with the distal end of the working tube (1) through a pull rope.

8. A ureteral stent removal device according to any one of claims 1 to 4, characterized in that: The handle end (2) is communicated and connected with at least one luer connector (11).

9. A ureteral stent removal device according to any one of claims 1 to 4, characterized in that: Further comprising a camera (12) and a wireless module (13), wherein the camera (12) is arranged at the distal end of the working tube (1) and is electrically connected with the wireless module (13), and the wireless module (13) is installed on the handle end (2) and is used for transmitting collected data to an external display instrument.

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