Simple ureteral stent taking-out device

Abstract

The simple ureteral stent taking-out device comprises a grabber and an insertion tube, the grabber comprises a grabbing head and a control part connected with the grabbing head, the insertion tube comprises a tube body, the tube body is provided with a near side end and a far side end, the near side end is provided with a bullet-shaped insertion end, the far side end is provided with a far side end, and the far side end is provided with a far side end. The top of the insertion end is provided with an inner concave part, a near-side opening is formed in the inner concave part, the grabbing head is arranged in the near-side opening, and the control part is exposed out of the far-side end. According to the ureteral stent grabbing device, the grabbing head can be shrunk into the inner concave part, damage to the urethra and the bladder caused by the grabbing head can be avoided, the bullet-shaped inserting end of the inserting pipe is inserted into the bladder, then the control part is pushed to enable the grabbing device to be opened in the bladder, the ureteral stent can be taken out through the grabbing device, and the ureteral stent grabbing device is simple in structure, easy to operate, convenient to use, small in damage and high in practicability. Safety and efficiency are realized.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and more specifically, to a simplified ureteral stent removal device. Background Art

[0002] Ureteral stents are essential consumables for urology and are widely used in patients after various laparoscopic urology surgeries. They are usually removed from the body about one month after surgery. Currently, most urologists in clinical practice often use instruments such as transurethral cystoscopic foreign body forceps to remove them, which often brings financial and psychological burdens to patients, and has the disadvantages of great pain for patients, high costs, occupying the cystoscopy room, and increasing the workload of doctors.

[0003] In response to the above-mentioned shortcomings, some people have proposed solutions, such as: Application No. 202010109977.2 discloses a removal device for removing a ureteral stent, the removal device comprising an outer sheath; further comprising an obturator for inserting the outer sheath and being installed with the outer sheath and being able to be inserted from the urethra into the bladder; further comprising an inner core tube and an remover for being able to be inserted into the outer sheath after being installed with the inner core tube; a draw buckle is provided at the end of the inner core tube, one end of a pull wire is fixed to the front end of the inner core tube and the other end of the pull wire is fixed to the draw buckle, the remover comprises a wire body whose front end can pass through the inner core tube, a cover body for grasping the ureteral stent is installed at the front end of the wire body, and a control handle for being installed and matched with the end of the inner core tube is installed at the end of the wire body.

[0004] Although the above scheme can remove the ureteral stent through the extraction device, it has at least the following defects: the obturator and the outer sheath need to be assembled together and inserted from the urethra to the bladder in a certain direction, and then the obturator is withdrawn, and then the extractor and the inner core tube are assembled and inserted into the outer sheath, and finally the outer sheath, the inner core tube, the extractor and the ureteral stent are extracted together. It can be seen that the operation is relatively cumbersome and complicated.

[0005] Therefore, the prior art needs to be improved. Summary of the invention

[0006] The purpose of the present application is to provide a simplified ureteral stent removal device, aiming to solve the technical problem of how to provide an efficient, safe and simple ureteral stent removal device in the prior art.

[0007] To achieve the above purpose, the technical solution adopted in this application is:

[0008] The present application provides a simplified ureteral stent removal device, which includes:

[0009] A gripper, the gripper comprising a gripper head and a control part connected to the gripper head;

[0010] Insertion tube, the insertion tube includes a tube body, the tube body has a proximal end and a distal end, the proximal end is provided with a bullet-shaped insertion end, and a concave portion is provided at the top of the insertion end, a proximal opening is opened in the concave portion, and the grasping head is arranged in the proximal opening, and the control part is exposed at the distal end.

[0011] In one embodiment, the grasping head includes: a grasping sleeve and a plurality of silk threads, the plurality of silk threads pass through the grasping sleeve and are connected to the control part, and one end of the silk thread away from the control part forms a retractable wire basket for grasping a ureteral stent through the traction of the control part.

[0012] In one embodiment, the grasping sleeve is embedded in the proximal opening and extends toward the distal end side, and when the silk thread is closed by the traction of the control part, the silk thread is hidden in the concave portion.

[0013] In one embodiment, the retractable wire basket includes 4 silk threads, and the silk thread includes a hard steel wire.

[0014] In one embodiment, the opening diameter range of the retractable wire basket is 3-6 cm, and the retractable wire basket is distributed in a spherical or ellipsoidal shape after being unfolded.

[0015] In one embodiment, a scale mark is arranged on one side of the control part close to the distal end.

[0016] In one embodiment, the tube body has a pipeline cavity for accommodating the gripper, the pipeline cavity is communicated with the proximal opening, and the diameter of the pipeline cavity is larger than the diameter of the grasping sleeve of the grasping head.

[0017] In one embodiment, a side opening is opened on one side of the tube body close to the proximal end, and the side opening is communicated with the pipeline cavity.

[0018] In one embodiment, the insertion tube includes one of the following structures: a latex tube, a silicone rubber tube or a polyvinyl chloride tube.

[0019] In one embodiment, the model of the insertion tube is 6F-18F.

[0020] The beneficial effects of a simple ureteral stent removal device provided by the present application are at least as follows:

[0021] The present application discloses a simple ureteral stent removal device, which includes a gripper and an insertion tube. The gripper includes a gripping head and a control part connected to the gripping head. The insertion tube includes a tube body, which has a proximal end and a distal end. The proximal end is provided with a bullet-shaped insertion end, and the top of the insertion end is provided with a concave part. A proximal opening is formed in the concave part, and the gripping head is arranged in the proximal opening. The control part is exposed at the distal end. In the present application, the gripping head can be retracted into the concave part, which can avoid the gripping head from causing damage to the urethra and bladder. The bullet-shaped insertion end of the insertion tube is inserted into the bladder, and then the control part is pushed to make the gripper open in the bladder, so as to remove the ureteral stent through the gripper. It has a simple structure, simple operation, convenient use, small damage, and is safe and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 FIG. is a schematic structural diagram of the simple ureteral stent removal device provided by the embodiment of the present application;

[0024] Figure 2 FIG. is a schematic structural diagram of the bullet-shaped insertion end provided by the embodiment of the present application;

[0025] Figure 3 FIG. is a schematic structural diagram of the insertion tube provided by the embodiment of the present application.

[0026] Among them, the reference numerals in the drawings are as follows:

[0027] 100, gripper; 200, insertion tube; 110, gripping head; 120, control part; 210, tube body; 220, insertion end; 230, concave part; 240, proximal opening; 250, pipeline cavity; 260, side opening. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the following further details the present application in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0029] It should be noted that when a component is referred to as "fixed to" or "disposed on" another component, it can be directly or indirectly located on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component. The orientations or positions indicated by the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positions shown in the drawings, and are only for convenience of description and should not be construed as limiting the technical solution of the present invention. The terms "first" and "second" are only used for convenience of description and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of technical features. The meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0030] Please refer to Figure 1 and Figure 2 This embodiment provides a simplified ureteral stent removal device, which includes: a gripper 100 and an insertion tube 200. The gripper 100 includes a gripping head 110 and a control part 120 connected to the gripping head 110. The insertion tube 200 includes a tube body 210. The tube body 210 has a proximal end and a distal end. A bullet-shaped insertion end 220 is provided at the proximal end of the tube body 210, and a concave portion 230 is provided at the top of the insertion end 220. A proximal opening 240 is opened in the concave portion 230, and the gripping head 110 is provided in the proximal opening 240. The control part 120 is exposed at the distal end.

[0031] In this embodiment, a bullet-shaped insertion end 220 is provided at the proximal end of the tube body 210. The bullet-shaped insertion end 220 can reduce resistance, enabling the insertion tube 200 to smoothly enter the urethra and bladder. Moreover, a concave portion 230 is provided at the top of the insertion end 220, and the gripping head 110 is provided in the proximal opening 240 of the concave portion 230. During the process of inserting into the urethra and bladder, the gripping head 110 of the gripper 100 can contract into the concave portion 230, avoiding damage to the urethra and bladder caused by the gripping head 110.

[0032] For example, when using the simplified ureteral stent removal device, first assemble the gripper 100 and the insertion tube 200 together so that the gripping head 110 is placed inside the proximal opening 240 of the proximal end of the tube body 210, and the control part 120 is exposed at the distal end of the tube body 210. Then, the bullet-shaped insertion end 220 can be inserted into the bladder from the urethra. Next, operate the control part 120 so that the gripping head 110 is deformed by traction. The gripping head 110 becomes a retractable basket for gripping the ureteral stent, which can clamp the ureteral stent. Rotate the control part 120 to drive the retractable basket to rotate. When slightly feeling resistance, operate the control part 120 to gradually shrink the retractable basket, so that the retractable basket clamps the ureteral stent and pulls the ureteral stent outwards, and the ureteral stent and the insertion tube 200 are pulled out of the urethra together.

[0033] Therefore, in this embodiment, the gripping head 110 can be retracted into the concave part 230, which can prevent the gripping head 110 from damaging the urethra and bladder. Insert the bullet-shaped insertion end 220 of the insertion tube 200 into the bladder, and then push the control part 120 to open the gripper 100 in the bladder, so as to remove the ureteral stent through the gripper 100. Its structure is simple, the operation is simple, it is convenient to use, the injury is small, and it is safe and efficient.

[0034] Specifically, please refer to Figure 1 , the gripping head 110 includes: a gripping sleeve and a plurality of silk threads. The plurality of silk threads pass through the gripping sleeve and are connected to the control part 120, and one end of the silk thread far from the control part 120 is formed into a retractable basket for gripping the ureteral stent by the traction of the control part 120.

[0035] In this embodiment, a plurality of silk threads can be formed into a retractable basket by the traction of the control part 120. The retractable basket has a first state of contraction and a second state of opening under the traction of the control part 120. When the retractable basket is in the first state, the retractable basket is located inside the proximal opening 240 of the concave part 230. When entering the urethra and bladder, the concave part 230 can prevent the gripping head 110 from touching and scraping the urethra and bladder, and avoid the gripping head 110 from damaging the urethra and bladder; when the retractable basket is in the second state, the retractable basket opens from the proximal opening 240 and is exposed at the bullet-shaped insertion end 220 to realize gripping the ureteral stent.

[0036] Specifically, the grasping sleeve is embedded in the proximal opening 240 and extends towards the distal end side. When the silk thread is closed by traction of the control part 120, the silk thread is hidden in the concave part 230. The grasping sleeve equivalent to the grasping head 110 is fixed to the proximal opening 240, and the silk thread can contract and expand within the grasping sleeve through the traction of the control part 120, so as to realize the deformation of the grasping head 110 on the side of the bullet-shaped insertion end 220. Among them, when the retractable basket is in the first contracted state, the head end of the silk thread is hidden in the concave part 230, and the main body of the silk thread is hidden in the insertion tube 200.

[0037] Optionally, the retractable basket includes 4 of the silk threads.

[0038] For example, the retractable basket includes 4 of the silk threads, that is, 4 of the silk threads form the retractable basket. The retractable basket can contract or expand through the traction of the control part 120. When contracted, the retractable basket can be hidden in the concave part 230, and when expanded, the retractable basket can be exposed outside the concave part 230 to facilitate grasping the ureteral stent. It should be understood that the retractable basket is not limited to the above-mentioned use of 4 of the silk threads, and the retractable basket can also adopt other forms, which are not limited here.

[0039] Optionally, the silk thread can include a metal silk thread.

[0040] For example, the silk thread can include a metal silk thread, that is, the silk thread can be made of a metal silk thread. The metal silk thread has certain elasticity and strength, and can meet the contraction performance and load-bearing performance of the retractable basket. For example, the silk thread can be made of hard steel wire.

[0041] Optionally, the opening diameter range of the retractable basket is 3-6 cm.

[0042] For example, the retractable basket can be arranged in a spherical or ellipsoidal shape. Among them, the opening diameter range of the retractable basket is 3 cm, or the opening diameter range of the retractable basket is 4 cm, or the opening diameter range of the retractable basket is 5 cm, or the opening diameter range of the retractable basket is 6 cm. It is equivalent that the opening diameter of the retractable basket can be set to different size models for different people to use. For example, the opening diameter range of the retractable basket of 3 cm can be suitable for children, and the opening diameter range of the retractable basket of 6 cm can be suitable for adults. For example, the bladder of an adult is about 8 cm, and the opening diameter range of the retractable basket is 6 cm. In this way, the retractable basket can occupy most of the bladder space, which can facilitate the retractable basket to smoothly grasp the ureteral stent and avoid the retractable basket being too small in size to easily grasp the ureteral stent.

[0043] Specifically, please refer to Figure 1 and a scale mark is arranged on the control part 120 close to the distal end side.

[0044] For example, a scale mark is provided on one side of the control part 120 close to the distal end. The scale mark includes a starting position of 0 cm, a 1 cm mark, a 2 cm mark, a 3 cm mark... When the retractable basket is in the first retracted state, the scale mark shows the starting position, that is, the scale mark points to 0 cm. When the retractable basket touches the ureteral stent by rotating the retractable basket, and then the retractable basket is caused to contract by the traction of the control part 120 so that the retractable basket clamps the ureteral stent. At this time, the marked scale mark is greater than 0 cm. For example, the marked scale mark is 2 cm, indicating that the retractable basket has clamped the ureteral stent. Then, the retractable basket is made to clamp the ureteral stent and the ureteral stent is pulled outwards to pull out the ureteral stent and the insertion tube 200 out of the urethra together.

[0045] Specifically, please refer to Figure 3 , the tube body 210 has a pipeline cavity 250 for accommodating the gripper 100. The pipeline cavity 250 communicates with the proximal opening 240, and the diameter of the pipeline cavity 250 is greater than the diameter of the grasping sleeve of the grasping head 110. The pipeline cavity 250 is used for accommodating the grasping sleeve and the silk thread to enable the retractable basket to contract within the concave part 230.

[0046] Specifically, please refer to Figure 3 , a side opening 260 is provided on one side of the tube body 210 close to the proximal end. The side opening 260 communicates with the pipeline cavity 250. The side opening 260 communicates with the pipeline cavity 250, and the pipeline cavity 250 extends from the proximal opening 240 to the distal end side. When the bullet-shaped insertion end 220 enters the bladder from the urethra, the liquid in the bladder can enter the pipeline cavity 250 through the side opening 260 and then flow out along the pipeline cavity towards the distal end. That is, when there is liquid flowing out, it indicates that the bullet-shaped insertion end 220 has entered the bladder. At this time, the control part 120 can be operated to make the retractable basket of the grasping head 110 in an open state. Since the opening diameter range of the retractable basket is 3 - 6 cm, that is, when the retractable basket opens, it can occupy most of the bladder. Then, the retractable basket can be rotated so that the retractable basket touches the ureteral stent. That is, when resistance is felt during the rotation of the retractable basket, the control part 120 can be pulled to cause the retractable basket to contract due to traction. When the marked scale mark is 0 cm, it means that the ureteral stent has not been grasped. At this time, the control part 120 can be operated to open the retractable basket again to re-grasp the ureteral stent until the retractable basket clamps the ureteral stent; when the marked scale mark is greater than 0 cm, for example, when the scale mark is 2 cm, it can indicate that the retractable basket has clamped the ureteral stent. At this time, the control part 120 can drive the retractable basket and the ureteral stent to be pulled outwards together to pull out the ureteral stent and the insertion tube 200 out of the urethra together.

[0047] Optionally, the insertion tube 200 includes one of the following structures: a latex tube, a silicone rubber tube, or a polyvinyl chloride tube.

[0048] For example, the insertion tube 200 may include a latex tube, that is, the insertion tube 200 can be made of a latex tube. The latex tube is soft and comfortable, has good biocompatibility, high surface finish, very little irritation, and a suitable price, which can improve the comfort of pushing the insertion tube 200 into the urethra.

[0049] For example, the insertion tube 200 may include a silicone rubber tube, that is, the insertion tube 200 can be made of a silicone rubber tube. The silicone rubber tube is soft and comfortable, has good biocompatibility, and no foreign body sensation, which can improve the comfort of pushing the insertion tube 200 into the urethra.

[0050] For example, the insertion tube 200 may include a polyvinyl chloride tube, that is, the insertion tube 200 can be made of a polyvinyl chloride tube. The polyvinyl chloride tube has a low price, which can reduce the production cost of the insertion tube 200.

[0051] Optionally, the model of the insertion tube 200 is 6F - 18F.

[0052] In this embodiment, the diameter of the insertion tube 200 is expressed in French units (F). Generally, the range is between 6F and 30F. Since the diameter of the catheter directly affects its applicability in clinical applications and the comfort of the patient. The size of the insertion tube 200 can vary from 6F to 30F, and different sizes are suitable for patients of different ages and genders.

[0053] For example, the commonly used model of the insertion tube 200 for men is 14F - 18F, while that for women is 16F - 18F. The model of the insertion tube 200 used by children is smaller, usually between 6F and 12F.

[0054] In summary, the present application discloses a simple ureteral stent removal device, which includes a gripper and an insertion tube. The gripper includes a grasping head and a control part connected to the grasping head. The insertion tube includes a tube body, the tube body has a proximal end and a distal end. The proximal end is provided with a bullet - shaped insertion end, and an inner concave part is arranged at the top of the insertion end. A proximal opening is opened in the inner concave part, and the grasping head is arranged in the proximal opening. The control part is exposed at the distal end. The present application inserts the bullet - shaped insertion end of the insertion tube into the bladder, and then pushes the control part to open the gripper in the bladder, so as to remove the ureteral stent through the gripper. Its structure is simple, the operation is convenient, and the injury is small.

[0055] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A simplified ureteral stent removal device, characterized in that: include: A gripper, the gripper comprising a gripper head and a control part connected to the gripper head; An insertion tube comprises a tube body, the tube body having a proximal end and a distal end, the proximal end being provided with a bullet-shaped insertion end, and the top of the insertion end being provided with an inner recess, a proximal opening being provided in the inner recess, the grabbing head being provided in the proximal opening, and the manipulation portion being exposed at the distal end.

2. The simplified ureteral stent removal device according to claim 1, characterized in that: The grasping head comprises: a grasping sleeve and a plurality of silk threads, wherein the plurality of silk threads pass through the grasping sleeve and are connected to the manipulation part, and one end of the silk threads away from the manipulation part is pulled by the manipulation part to form a contraction basket for grasping the ureteral stent.

3. The simplified ureteral stent removal device according to claim 2, characterized in that: The grabbing sleeve is embedded in the proximal opening and extends toward the distal end, and when the wire is closed by pulling the manipulation portion, the wire is hidden in the inner recess.

4. The simplified ureteral stent removal device according to claim 2, characterized in that: The shrinkage basket comprises four of the wires, and the wires comprise hard steel wires.

5. The simplified ureteral stent removal device according to claim 2, characterized in that: The opening diameter of the shrinkable net basket ranges from 3 to 6 cm, and the shrinkable net basket is distributed in a spherical or elliptical shape after being expanded.

6. The simplified ureteral stent removal device according to claim 1, characterized in that: A scale mark is arranged on one side of the control part close to the distal end.

7. The simplified ureteral stent removal device according to claim 1, characterized in that: The tube body has a channel cavity for accommodating the grabber, the channel cavity is communicated with the proximal opening, and the diameter of the channel cavity is greater than the diameter of the grabbing sleeve of the grabbing head.

8. The simplified ureteral stent removal device according to claim 7, characterized in that: A side opening is formed on one side of the tube body close to the proximal end, and the side opening is communicated with the pipeline cavity.

9. The simplified ureteral stent removal device according to claim 1, characterized in that: The insertion tube comprises one of the following structures: a latex tube, a silicone rubber tube or a polyvinyl chloride tube.

10. The simplified ureteral stent removal device according to claim 1, characterized in that: The model of the insertion tube is 6F-18F.

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