Plugging suite for calculus breaking and removing of urinary system calculus
By designing a streamlined hollow container and an umbrella-shaped hook sealing kit, the problems of stone fragment escape and high operational difficulty of existing urinary system stone removal instruments have been solved, achieving efficient and safe stone removal and reducing damage to the mucosa and the risk of infection.
Patent Information
- Application Number
- CN202520219745.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-11
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-02-11
AI Technical Summary
Existing lithotripsy and stone removal instruments for urinary system stones have problems such as stone fragment escape, high operation difficulty, low efficiency, serious damage to the mucosa, and high risk of infection, especially when the effect is poor when there is no point of leverage to remove stones.
An occlusion kit comprising a streamlined hollow container, an umbrella gripper, and an umbrella hook was designed. By constructing a safe surgical area within the renal pelvis or bladder, the hollow container collects lithotripsy, the umbrella gripper fixes the stones before laser lithotripsy and removal, and the umbrella hook assists in the removal of the stones, reducing damage to the mucosa.
It improves lithotripsy efficiency, reduces operation time and patient side effects, lowers the risk of infection, reduces the probability of iatrogenic stenosis, and achieves efficient and safe stone removal.
Smart Images
Figure CN223682608U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical instrument technical field, concretely is a kind of for urinary system calculus lithotripsy and stone extraction plugging kit. BACKGROUND
[0002] Urinary system calculus is common disease in the world, and upper urinary tract stone patients are the majority.
[0003] Current market for lithotripsy and stone extraction medical instrument has many defects:
[0004] 1. Nickel-titanium alloy urinary system stone extraction net (occluder) produced by Boston Scientific Corporation: product is screw thread structure and opens behind stone. Its size is fixed when opening behind stone, and in use process, the net basket of screw thread structure can be deformed, leading to stone fragments flowing out and needing to be taken out to bladder by ureter wall.
[0005] 2. Occluder produced by COOK: product is funnel-shaped eccentric design, and selected memory alloy is too soft, in use process, the net basket is deformed and stone fragments escape.
[0006] 3. Occlusion and stone extraction catheter produced by Shanghai Yingnuowei Company: product is blade structure, and the gap of occluder after folding is large, in use process, stone can escape through the gap of occluder.
[0007] 4. Foreign reports adopt some high polymer materials to inject behind ureteral calculus, and achieve occlusion effect by self-condensation, and after stone crushing, cold or hot water is used for flushing and dissolving, but the product is expensive, not suitable for promotion.
[0008] 5. Existing stone basket working range is usually in two-dimensional plane, i.e. forward and backward movement or rotation with a point as axis, so that stone is located in the working area of net basket, even if 3D operation can be carried out under the assistance of soft mirror, but there is still the case that stone can be seen but not taken.
[0009] 6. Existing stone basket can only grasp a small amount each time, and each time in and out of channel not only consumes time but also increases infection possibility.
[0010] To solve the above technical problems, the application provides a plugging container applied to urinary system calculus lithotripsy and stone extraction, which comprises a streamline cavity container, a front-end bendable umbrella grab and an umbrella hook device matched with the cavity container. The device can solve the problems of long existing stone extraction time, low work efficiency for non-anchor point calculus, damage to kidney tissue and surface mucosa caused by each stone extraction, accumulation of critical calculus block at the connection between renal pelvis and ureter caused by water flow flushing in percutaneous nephrolithotomy, and small amount of calculus extracted at one time. Utility model content
[0011] In view of the deficiencies of the prior art, the utility model provides a plugging kit for urinary system stone crushing and taking, which can not only improve the problem of difficult taking of accumulated stones caused by water flow impact at the pelvis duct connection during percutaneous nephrolithotomy operation of urology, but also can be used as an artificial kidney calyx to place stones of critical size without a force point in the cavity container and use matched instruments to crush the stones by laser and then take out the stones together. For bladder stones, the device of corresponding specifications can also be used to crush the stones in the cavity and then take out the stones. The utility model improves the stone crushing efficiency, reduces the laser damage to the bladder or pelvis mucosa during the stone crushing process, reduces the secondary damage of stone edges to ureter and urethral mucosa when taking out the stones, and constructively proposes the operation concept of placing stones in an artificial kidney calyx for crushing and then taking out the stones. In addition, for the secondary percutaneous nephrolithotomy, the device can also be used as a filter to solve the problems in the background art.
[0012] The utility model provides the following technical scheme: a plugging kit for urinary system stone crushing and taking, comprising a plugging device, an umbrella hook and an umbrella grab, the number of the plugging device is two, which can be divided into two sizes with diameters of 24Fr and 15Fr, the sizes of the two are different, but the shapes are consistent, and the umbrella hook and the umbrella grab with diameters of 24Fr and 15Fr are arranged.
[0013] The plugging device comprises a cavity container, a hole and an annular groove, the inner bottom of the plugging device is provided with the hole, and the outer wall of the cavity container is provided with the annular groove.
[0014] The umbrella hook comprises a handle, an outer tube, a handle, an inner wire and a hook claw, the bottom end of the handle is provided with the outer tube, the inside of the handle is provided with the handle, the bottom end of the handle is provided with the inner wire, the bottom end of the inner wire is located in the inside of the outer tube, and the bottom end of the inner wire is provided with the hook claw.
[0015] Preferably, the outer tube is fixedly connected with the bottom end of the handle, the handle is slidably connected with the inside of the handle, the top end of the inner wire is fixedly connected with the handle, and the hook claw is fixedly connected with the bottom end of the inner wire.
[0016] Preferably, the outer layer of the cavity container is coated with a hydrophilic coating, and the inner wall of the cavity container is in a screw thread shape.
[0017] Preferably, the lower 1 / 3 of the cavity container is made of a transparent material, the upper 2 / 3 of the cavity container is made of a composite silica gel, and the lower 1 / 3 of the cavity container is designed in an arc shape according to the corresponding specifications of the existing ureteral hard mirror and soft mirror head.
[0018] Preferably, the lower 1 / 3 of the cavity container is designed as a circular arc according to the corresponding specifications of the existing ureteral hard mirror and soft lens.
[0019] Preferably, the gap between the two claws of the umbrella is less than 2mm.
[0020] Compared with the prior art, the utility model has the following beneficial effects:
[0021] (1) By constructing a cavity, a safe operation area is constructed in the renal pelvis or bladder, avoiding damage to the mucosa during laser lithotripsy. The cavity with an ergonomic functional appearance can be used as a pelvis-tube connecting part occluder, collecting stones accumulated in this place due to water irrigation, avoiding the cleaning of stones accumulated in the pelvis-tube connecting part after lithotripsy. On the one hand, it reduces the squeezing damage to the kidney caused by the operation of searching for stones accumulated in the pelvis-tube connecting part through percutaneous nephroscopy each time, and on the other hand, it improves the stone removal efficiency, reduces the operation time, reduces the side damage to the patient, reduces the risk of infection, and improves the safety of the operation.
[0022] (2) The internal thread shape process of the cavity container increases the friction force to prevent the stones entering the interior from being washed out by the water flow, the outer part is smooth to reduce the friction to the mucosa, the 45° slope guides the umbrella, reduces the operation difficulty, and is more convenient for the operator.
[0023] (3) The soft material cavity is more friendly to the ureteral mucosa during the visualization placement process, greatly reducing the damage of the hard lens to the ureteral mucosa when the mirror is inserted, and reducing the probability of postoperative ureteral iatrogenic stenosis of the patient.
[0024] (4) It solves the problem that the stones are seen but cannot be fragmented or removed in the existing actual operation.
[0025] (5) The gap between the two claws of the umbrella is less than 2mm, which ensures that the stones larger than 2mm cannot flow out of the umbrella when the cavity container is grabbed.
[0026] (6) For stones without a force point, the existing lithotripsy method contacts the laser to the stone due to energy release, but the stone has no force point, plus the water flow washing causes the stone to deviate from the target operation field, resulting in low lithotripsy efficiency and delayed operation time. The use of the umbrella can fix such stones without a force point in the field of view, and then place the laser on the stone under direct vision, greatly improving the lithotripsy efficiency, reducing the operation time, and reducing a series of risks caused by the long operation time.
[0027] (7) The existing stone extraction method usually uses foreign body forceps or a stone extraction basket to extract the stone fragments, but the stones are usually angular, and the foreign body forceps or the stone extraction basket cannot wrap the stone fragments in all directions, which causes damage to the mucosa by the angular stone fragments during the stone extraction process, increasing the probability of iatrogenic stenosis. The umbrella hook combined with the cavity container can wrap the angular stone fragments, and the smooth outer surface can gently pass through the mucosa of the urinary system, reducing the probability of iatrogenic stenosis and reducing postoperative complications and pain of the patient. In addition, a large amount of stone fragments can be extracted at one time.
[0028] (8) The existing direct operation of the stone in the human body cavity is prone to heat damage caused by long-time work of the laser, although this can be alleviated due to continuous water flow. However, the device provides a safe field for stone extraction, and a new stone extraction and extraction operation method is provided in combination with the device. BRIEF DESCRIPTION OF DRAWINGS
[0029] Figure 1 A device for a plugging kit for urinary system stone extraction and extraction according to the present application is provided.
[0030] Figure 2 A plugging kit for urinary system stone extraction and extraction according to the present application is provided.
[0031] Figure 3 A plugging kit for urinary system stone extraction and extraction according to the present application is provided. Figure 2 An enlarged structure diagram of position A in the middle;
[0032] Figure 4 An umbrella hook structure diagram of a plugging kit for urinary system stone extraction and extraction according to the present application is provided.
[0033] Figure 5 An umbrella hook structure diagram of a plugging kit for urinary system stone extraction and extraction according to the present application is provided.
[0034] In the figure: 1, plugging device; 101, cavity container; 102, hole; 103, annular groove; 2, umbrella hook; 201, handle; 202, outer tube; 203, handle; 204, inner wire; 205, hook claw; 3, umbrella. DETAILED DESCRIPTION
[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.
[0036] Referring to Figures 1 to 5 A blocking kit for urinary system stone lithotripsy, comprising a blocking device 1, an umbrella hook 2, and an umbrella grab 3, the number of blocking devices 1 is two, which can be divided into two sizes of 24Fr and 15Fr, the sizes of the two are different but the shapes are consistent, and two sizes of umbrella hooks 2 and umbrella grabs 3 matched with them are provided, the gap between the two jaws of the umbrella grab 3 is less than 2mm;
[0037] In percutaneous nephroscopy, after establishing a surgical channel, the cavity container 101 is placed at the head end of the percutaneous nephroscope, and through the fit of the front end curvature of the container and the front end of the lens, it is placed at the intersection of the calyx and the renal pelvis under visualization. The operator can flexibly choose whether to place a second cavity container 101 according to the space and the position of the stone. If the space is sufficient and the stone is easily washed out of the field of view by water, a second cavity container 101 can be placed, the front end movable umbrella grab 3 enters along the channel of the scope itself, opens to grab a stone of appropriate size and places it in the cavity container 101, and then adjusts the umbrella hook 2 to tighten the container mouth and take it out. If the stone is too large to be placed in the cavity container 101, the target stone can be fixed by the umbrella grab 3, and then the target stone is fragmented by laser, and then the above steps are performed. After the target stone is fragmented, the cavity container 101 at the intersection of the calyx and the renal pelvis is taken out under direct vision by the umbrella hook 2.
[0038] Referring to Figures 1 to 3 The blocking device 1 comprises a cavity container 101, a hole 102, and an annular groove 103. The inner bottom of the blocking device 1 is provided with a hole 102, the outer wall of the cavity container 101 is provided with an annular groove 103, the outer layer of the cavity container 101 is coated with a hydrophilic coating, the inner wall of the cavity container 101 is in a threaded shape, the lower 1 / 3 of the cavity container 101 is made of transparent material, the upper 2 / 3 of the cavity container 101 is made of composite silica gel, the lower 1 / 3 of the cavity container 101 is designed in a circular arc shape according to the corresponding specifications of existing ureteral hard scopes and soft scope lenses, and the lower 1 / 3 of the cavity container 101 is designed in a circular arc shape according to the corresponding specifications of existing ureteral hard scopes and soft scope lenses.
[0039] The threaded shape process inside the cavity container 101 increases the friction force to prevent the stones entering the inside from being washed out by the water flow, and the outside is smooth to reduce the friction on the mucosa, reduce the operation difficulty, and make it more convenient for the operator. Moreover, the soft material of the cavity container 101 is more friendly to the ureteral mucosa during the visualization placement process, greatly reducing the damage of the hard lens to the ureteral mucosa when the scope is inserted, and reducing the probability of postoperative ureteral iatrogenic stenosis of the patient.
[0040] Referring to Figure 4The umbrella hook 2 comprises a handle 201, an outer tube 202, a handle 203, an inner wire 204 and a hook claw 205. The bottom end of the handle 201 is provided with the outer tube 202. The inside of the handle 201 is provided with the handle 203. The bottom end of the handle 203 is provided with the inner wire 204. The bottom end of the inner wire 204 is located in the inside of the outer tube 202. The bottom end of the inner wire 204 is provided with the hook claw 205. The outer tube 202 is fixedly connected with the bottom end of the handle 201. The handle 203 is slidingly connected with the inside of the handle 201. The top end of the inner wire 204 is fixedly connected with the handle 203. The hook claw 205 is fixedly connected with the bottom end of the inner wire 204.
[0041] The existing stone extraction method usually uses a foreign body forceps or a stone extraction basket to extract the stone fragments, but the stones usually have edges and corners, and the foreign body forceps or the stone extraction basket cannot wrap the stone fragments in all directions, which causes the edges and corners of the stones to damage the mucosa during the stone extraction process, increases the probability of causing iatrogenic stenosis. The umbrella hook 2 combined with the cavity container 101 can wrap the edge stone fragments, and the smooth outer surface can gently pass through the mucosa of the urinary system, reduce the probability of iatrogenic stenosis, and reduce postoperative complications and pain of the patient. In addition, a large amount of stone fragments can be extracted at one time.
[0042] In the utility model, the working principle of the device is as follows:
[0043] When the channel is established by the percutaneous nephroscope operation, the 15Fr cavity container 101 can be placed in the pelvis-tube junction through the percutaneous ureteral hard mirror or the ureteral soft mirror, and then another cavity container 101 of the same size is placed in the renal pelvis. The umbrella hook 3 is used to place the stone with no force point and suitable size in the cavity container 101 under direct vision, and the umbrella hook 2 is used to tighten the cavity container 101 and then pull it out of the body. For larger impacted stones, they can be first crushed into smaller stone blocks, and then the stone blocks are extracted by the above method. After the lithotripsy is completed, the cavity container 101 at the pelvis-tube junction is taken out by the umbrella hook 2, and the lithotripsy is completed.
[0044] For ureteral stones, the umbrella hook 3 can be used to fix the stones and then perform laser lithotripsy, so as to avoid the increase of the operation time caused by the upward movement of the stones. For smaller bladder stones, the umbrella hook 3 can be directly used to grasp the stones. For larger stones, the umbrella hook 3 can be used to fix the stones and then perform lithotripsy, so as to avoid the invalid work caused by no force point and reduce the damage of the laser to the mucosa.
[0045] It is worth noting that the umbrella hook 3 has been a relatively mature technology for grasping stones, and its working principle is a well-known technology, so it will not be explained in detail.
[0046] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.
[0047] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.
Claims
1. A closure kit for urinary system lithotripsy, comprising a closure device (1), an umbrella hook (2), an umbrella catch (3), characterized in that, The number of the occluder (1) is two, which can be divided into two sizes of 24Fr and 15Fr, and the sizes are different but the shapes are consistent, and the umbrella hook (2) and the umbrella grab (3) with the size of 24Fr and 15Fr are arranged. The occluder (1) comprises a cavity container (101), a hole (102) and an annular groove (103), the inner bottom of the occluder (1) is provided with the hole (102), and the outer wall of the cavity container (101) is provided with the annular groove (103). The umbrella hook (2) comprises a handle (201), an outer tube (202), a pull handle (203), an inner wire (204) and a hook claw (205), the bottom end of the handle (201) is provided with the outer tube (202), the inside of the handle (201) is provided with the pull handle (203), the bottom end of the pull handle (203) is provided with the inner wire (204), the bottom end of the inner wire (204) is located in the inside of the outer tube (202), and the bottom end of the inner wire (204) is provided with the hook claw (205).
2. The occlusion kit for use in the urinary system for lithotripsy and stone extraction according to claim 1, characterized in that: The outer tube (202) is fixedly connected with the bottom end of the handle (201), the pull handle (203) is slidably connected with the inside of the handle (201), the top end of the inner wire (204) is fixedly connected with the pull handle (203), and the hook claw (205) is fixedly connected with the bottom end of the inner wire (204).
3. The occlusion kit for use in the urinary system for lithotripsy and stone extraction according to claim 1, characterized in that: The outer layer of the cavity container (101) is coated with a hydrophilic coating, and the inner wall of the cavity container (101) is in a screw shape.
4. The occlusion kit for use in urinary system stone lithotripsy according to claim 1, characterized in that: The lower 1 / 3 of the cavity container (101) is made of transparent material, the upper 2 / 3 of the cavity container (101) is made of composite silica gel, and the lower 1 / 3 of the cavity container (101) is designed in an arc shape according to the corresponding specifications of the existing ureteral hard mirror and soft lens.
5. The occlusion kit for use in urinary system stone lithotripsy according to claim 1, characterized in that: The lower 1 / 3 of the cavity container (101) is designed in an arc shape according to the corresponding specifications of the existing ureteral hard mirror and soft lens.
6. The occlusion kit for use in urinary system stone lithotripsy according to claim 1, characterized in that: The gap between the two claws of the umbrella grab (3) is less than 2mm.