Stone taking basket
By introducing a film-covered structure into the stone basket, the problem that existing stone baskets can easily scratch the mucosa in the tube when collecting irregular stones is solved, and a safer and more efficient stone removal process is achieved.
Patent Information
- Application Number
- CN202420687517.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-04-03
AI Technical Summary
When collecting irregularly shaped stones in existing stone baskets, sharp edges and corners can easily scratch the mucosa in the tube, resulting in unsafe stone extraction process.
A stone basket including a sheath and multiple guide tubes was designed. The guide tube slides and pushes the wires, and the pushes and draws the wires form a circle to fit the stones. The film is coated on the outside of the stone to isolate the mucosa in the tube.
Through the isolation of the film, the contact between the sharp part of the stone and the mucosa in the tube is reduced, the safety of the stone extraction process is improved, and the stone extraction and pulling operation is simplified.
Smart Images
Figure CN222549281U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of stone taking, in particular to a stone taking basket. Background Art
[0002] The stone removal basket is generally used to remove stone fragments after lithotripsy under ureteroscopy. The three-wire stone removal basket includes a sheath tube and three mesh guide tubes. One end of the mesh guide tube is connected to the sheath tube, and the other end is an open end. The sheath tube is slidably connected with a push-pull wire, and the push-pull wire is connected to a nickel-titanium wire. Each nickel-titanium wire slides in the corresponding mesh guide tube and passes through the open end and is fixed to the open end of the adjacent mesh guide tube. The three nickel-titanium wires cooperate with the mesh guide tube to form a triangular cone mesh basket in the open state. This kind of mesh basket can be opened and closed when the wire is pulled back, so that stones can be collected. However, since the shape of the stone is irregular and easily has sharp edges and corners, when the stone is collected from the triangular cone mesh basket, the sharp edges and corners protrude from the two adjacent mesh guide tubes, so that the stone is easy to scratch the mucosa inside the tube during the removal process. Utility Model Content
[0003] The utility model aims to provide a stone-taking basket to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.
[0004] The technical solution adopted to solve the above technical problems is as follows: a stone removal basket includes: a sheath tube, one end of which is equipped with multiple guide tubes, the guide tubes are connected to the sheath tube, and a push-pull wire is slidably connected inside the guide tube, one end of the push-pull wire extends to the sheath tube, and the other end extends out of the end of the guide tube and is arranged at the adjacent end of the guide tube; a film, the two sides of which are respectively connected to the two adjacent guide tubes.
[0005] This technical solution has at least the following beneficial effects: when removing stones, by pushing the push-pull wire, the ends of the multiple guide tubes away from the sheath tube are moved away from each other to open the stone removal basket, so that the stone is inserted from the circle formed by the multiple push-pull wires into the space between the multiple guide tubes, and then the push-pull wire is tightened, so that the stone can be stuck in the stone removal frame formed by the multiple push-pull wires and the multiple guide tubes, and the film is on the outside of the stone. When the stone is pulled out, since there is a thin film between the stone and the mucosa in the tube, the situation where the sharp stone causes scratches on the mucosa in the human tube can be reduced, thereby better protecting human organs and ensuring safety during the stone removal process.
[0006] As a further improvement of the above technical solution, at least one pair of adjacent two guide tubes is not provided with the film. When removing stones, the stones can be inserted between the two adjacent guide tubes without the film, and when inserting the stones, the side provided with the film can be used to wrap the sharper side of the stones, thereby reducing the situation where the sharp side of the stones scratches the mucous membrane inside the human body, so as to protect human organs.
[0007] As a further improvement of the above technical solution, one side of the film is connected to the guide tube near one end of the sheath tube, and the other side is folded, and the sheath tube is equipped with a pulling piece for unfolding the film. After the film is folded, the film is not blocked between two adjacent guide tubes, so that it is convenient to take stones from between two adjacent guide tubes, reducing the time for taking stones. After taking stones, the film can be unfolded by the pulling piece so that the film covers the outside of the stone to protect the mucous membrane inside the human body.
[0008] As a further improvement of the above technical solution, the pulling member is a traction wire slidably arranged in the guide tube, one end of the traction wire extends to the sheath tube, and the other end extends out of the end of the guide tube and is connected to the folded end of the film. By pulling the traction wire, the folded film can be unfolded, so that the film is wrapped around the outside of the stone, which is convenient to operate and improves the efficiency of stone removal.
[0009] As a further improvement of the above technical solution, the two sides of the film are attached to the outer side walls of the two adjacent guide tubes, and the middle part of the film is folded and arranged at one end of the guide tube close to the sheath tube. The two sides of the film are fixed to the outer side walls of the guide tube, and the middle part of the film is folded toward the sheath tube, which can reduce the folding plane of the film and reduce the space occupied by the folded film; in addition, when the film is unfolded, since the middle part of the film is unfolded, it can be more easily covered on the outside of the protruding stone, ensuring that the film covers the stone smoothly.
[0010] As a further improvement of the above technical solution, a film is provided between two adjacent guide tubes, and the two adjacent films are connected to each other to form a film sleeve, one end of the film sleeve is fixedly connected to the guide tube near one end of the sheath tube, and the other end is folded. When the film sleeve is folded, the whole is annularly sleeved on the outside of the multiple guide tubes. After the film sleeve is unfolded, the film sleeve is wrapped around the multiple guide tubes, that is, it is also wrapped around the outside of the stone, so as to protect the mucous membrane inside the human body. In addition, the film sleeve has better flexibility and independence relative to the guide tube, and it is not easy to cause the film sleeve to be broken due to excessive protrusion or sharpness of the outside of the stone, thereby ensuring the reliability of the film covering the stone.
[0011] As a further improvement of the above technical solution, a protective cover is installed at the end of the sheath tube to wrap the guide tube. The protective cover is sleeved on the end of the sheath tube to wrap the guide tube and the film thereon, which can reduce the situation where the film is damaged or difficult to unfold due to adhesion or friction between the film and the packaging bag of the stone removal basket.
[0012] As a further improvement of the above technical solution, the protective cover comprises an upper cover and a lower cover which are mutually covered and connected. By disassembling the upper cover and the lower cover and removing the protective cover, friction damage to the film when the protective cover is removed can be prevented.
[0013] As a further improvement of the above technical solution, the film protrudes outward in an arc shape at the middle of the side away from the sheath. The film extends outward away from the sheath, so that the film can wrap around the outside of the stone in a larger area, reducing the situation where the mucosa is scratched by the sharp corners of the stone away from the sheath that are not covered by the film, so as to better protect the mucosa in the human body.
[0014] As a further improvement of the above technical solution, the film is made of PET material or PDMS material. PET material has good wear resistance, elasticity and toughness, and the film made of PET material can better cover the outer surface of the stone; the film made of PDMS material has good flexibility and elasticity, and can better extend and cover the outer surface of the stone. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0016] Figure 1 A schematic diagram of the structure in which a protective cover is installed in an embodiment of the utility model;
[0017] Figure 2 This is a schematic diagram of the structure of the embodiment of the utility model without installing a protective cover;
[0018] Figure 3 This is a schematic diagram of the structure of the guide tube in the embodiment of the utility model;
[0019] Figure 4 This is a schematic diagram of the structure of the film when it is folded in the first embodiment of the utility model;
[0020] Figure 5 This is a schematic diagram of the structure of the film when it is unfolded in the first embodiment of the utility model;
[0021] Figure 6 This is a schematic diagram of the structure of the film when it is folded in the second embodiment of the utility model;
[0022] Figure 7It is a schematic diagram of the structure of the film when it is unfolded in the second embodiment of the utility model.
[0023] The sheath tube 10 , the guide tube 20 , the push-pull wire 30 , the film 40 , the traction wire 50 , the protective cover 60 , the upper cover 61 , and the lower cover 62 . DETAILED DESCRIPTION
[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0025] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0026] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.
[0028] Embodiment 1:
[0029] Reference Figure 1-3A stone removal basket includes a sheath tube 10, and three elastic guide tubes 20 are installed at one end of the sheath tube 10. The three guide tubes 20 are arranged away from each other at the end away from the sheath tube 10. The interiors of the three guide tubes 20 are all connected to the interior of the sheath tube 10, and the three guide tubes 20 are distributed in a circular circle with the center line of the sheath tube 10 as a circle. Push-pull wires 30 are passed through the three guide tubes 20, and the push-pull wires 30 can slide in the guide tubes 20. One end of the push-pull wire 30 extends to the end of the sheath tube 10 away from the guide tube 20, and the other end extends out of the end of the guide tube 20 away from the sheath tube 10 and is fixed on the end face of the adjacent guide tube 20. In other embodiments, the push-pull wire 30 extending out of the guide tube 20 can also be fixed on the side position of the end of the adjacent guide tube 20. The portions of the three push-pull wires 30 extending out of the guide tubes 20 form a stone removal frame with the three guide tubes 20. When the push-pull wires 30 are pushed in or pulled out at the end of the sheath tube 10 away from the guide tube 20, the ends of the three guide tubes 20 away from the sheath tube 10 can be moved away from or close to each other, so that the stone removal frame can be opened and closed. When the sheath tube 10 is extended into the human body tube, the stone removal frame is opened to align with the stone in the tube, and the stone can be inserted and removed.
[0030] In other embodiments, the sheath tube 10 may also be connected to four, five, six or more guide tubes 20, and the push-pull wires 30 extending out of the guide tubes 20 may be fixed at the end positions of adjacent guide tubes 20, or may be fixed at the end positions of spaced guide tubes 20.
[0031] A film 40 is arranged between two adjacent guide tubes 20. The film 40 is fan-shaped and the two sides are respectively fixed on the outside of the two adjacent guide tubes 20. The film 40 is made of PET material. In other embodiments, the film 40 can also be made of PDMS material. The side of the film 40 away from the sheath tube 10 is in an arc shape, and the arc shape protrudes outward in the direction away from the sheath tube 10. When the stone is taken out, the stone enters from the opening surrounded by the three push-pull wires 30 extending out of the guide tube 20, and then the push-pull wires 30 are tightened to pull the stone out after the stone is tightened. At this time, the film 40 is coated on the outside of the stone, and the arc-shaped edge of the film 40 can be coated on the outside of the stone with a larger area, separating the stone from the mucosal tissue in the human body tube, thereby preventing the sharper outer structure of the stone from scratching the mucosal tissue in the human body tube during the process of pulling out, and ensuring the safety of the stone removal process.
[0032] In other embodiments, in order to more conveniently and quickly remove the stone, only two of the three guide tubes 20 are provided with a film 40, the stone removal frame only contains one film 40, and there is no film 40 between the two guide tubes 20 and the other guide tube 20, so that the stone can be inserted between the two adjacent guide tubes 20 without the film 40, and when inserting the stone, the film 40 is wrapped on the sharper side of the stone, so as to prevent the sharp structure of the stone on this side from scratching the mucosal tissue in the human body. In other embodiments, the film 40 can also be only provided between two pairs of adjacent two guide tubes 20, the stone removal frame only contains two films 40, and there is no film 40 between two adjacent guide tubes 20. When removing the stone, the rougher and sharper side of the stone is inserted into the stone removal frame, so that the film 40 can be wrapped on the rougher and sharper side of the stone, so as to prevent the sharp structure of the stone on this side from scratching the mucosal tissue in the human body.
[0033] A protective cover 60 is sleeved on one end of the sheath tube 10 close to the guide tube 20, and a relatively large cavity for accommodating the guide tube 20 is provided inside the protective cover 60. The protective cover 60 includes an upper cover 61 and a lower cover 62, and the upper cover 61 and the lower cover 62 are flexibly connected on one side and are connected by a snap-fit structure on the other side. The upper cover 61 and the lower cover 62 are provided with an arc groove at the same end, and when the upper cover 61 and the lower cover 62 are covered on the sheath tube 10, the arc grooves on both sides abut against the outside of the sheath tube 10, so that the protective cover 60 can be fixedly connected to the sheath tube 10, so that the protective cover 60 can be wrapped around the outside of the guide tube 20 to protect the guide tube 20 and the film 40 connected thereto.
[0034] Reference Figure 4-5 The width of the film 40 is larger than the distance between two adjacent guide tubes 20 after unfolding, and the film 40 has a certain elasticity, so that the middle part of the film 40 can be folded toward the direction close to the sheath tube 10, and the folded film 40 can be temporarily kept in the folded state by squeezing and other operations. A pulling member is installed in the sheath tube 10, and the pulling member is specifically a traction line 50. Each guide tube 20 is penetrated by a traction line 50, one end of the traction line 50 extends and passes through both ends of the sheath tube 10, and the other end extends out of the guide tube 20 and is fixed to the middle position of the adjacent film 40 away from the sheath tube 10. When the stone is to be inserted, due to the folding of the middle part of the film 40, the stone can be inserted between any two adjacent guide tubes 20, and then the film 40 is unfolded by pulling the traction line 50, so that the film 40 can be covered on the outside of the stone. While making it easier to remove stones, it can more completely separate the stones from the mucosal tissue in the human body's tubes, preventing the sharper outer structures of the stones from scratching the mucosal tissue in the human body's tubes during the process of pulling them out, thereby better ensuring the safety of the stone removal process.
[0035] In other embodiments, the pulling member may also be an elastic wire, the middle of the elastic wire is fixed at the middle position of the side of the film 40 away from the sheath tube 10, one end of the elastic wire is fixed at the end position of the adjacent guide tube 20 away from the sheath tube 10, and the other end of the elastic wire penetrates the two ends of the sheath tube 10. The elasticity of a section of the elastic wire connected to the film 40 and the guide tube 20 at both ends is worse than the elasticity of the section of the elastic wire penetrating the sheath tube 10. When a pre-tension is applied to the section of the elastic wire penetrating the sheath tube 10, the elastic wire is stretched, and the film 40 can be kept in a folded state. When the pre-tension applied to the section of the elastic wire penetrating the sheath tube 10 is released, the film 40 can be pulled to unfold under the elastic tension of the elastic wire, thereby achieving the coating of the stone.
[0036] Embodiment 2:
[0037] Reference Figure 6-7 , the difference between the second embodiment and the first embodiment is that the folding structure of the film 40 is different. A film 40 is arranged between two adjacent guide tubes 20, and the two adjacent films 40 are connected, so that three films 40 form a film sleeve, and the film sleeve is in the shape of a truncated cone tube. The end of the film sleeve close to the sheath tube 10 is fixedly connected to the end of the guide tube 20 close to the sheath tube 10, and the end of the film sleeve away from the sheath tube 10 is folded toward the sheath tube 10. The film sleeve also has a folded portion in the circumferential direction, so that the outer peripheral size of the folded film sleeve is small. The position where the traction line 50 is connected to the film 40 can be close to the adjacent guide tube 20, so that the influence of the traction line 50 on the stone can be reduced. When the stone is to be taken, since the film sleeve is folded at the end of the guide tube 20 close to the sheath tube 10, the stone can be inserted between any two adjacent guide tubes 20, and then the film sleeve is unfolded by pulling the traction line 50, so that the film sleeve can be covered on the outside of the stone. While making it easier to remove stones, it can more completely separate the stones from the mucosal tissue in the human body's tubes, preventing the sharper outer structures of the stones from scratching the mucosal tissue in the human body's tubes during the process of pulling them out, thereby better ensuring the safety of the stone removal process.
[0038] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.
Claims
1. A stone retrieval basket, characterized in that: include: A sheath tube, one end of which is provided with a plurality of guide tubes, the guide tubes being in communication with the sheath tube, a push-pull wire being slidably connected in the guide tube, one end of the push-pull wire extending to the sheath tube, the other end extending out of the end of the guide tube and being arranged at the adjacent end of the guide tube; The film has two sides respectively connected to two adjacent guide tubes.
2. A stone removal basket according to claim 1, characterized in that: The film is not arranged between at least one pair of adjacent two guide tubes.
3. A stone removal basket according to claim 1, characterized in that: One side of the film is connected to one end of the guide tube close to the sheath tube, and the other side is folded. The sheath tube is equipped with a pulling member for unfolding the film.
4. A stone removal basket according to claim 3, characterized in that: The pulling member is a pulling wire slidably arranged in the guide tube, one end of the pulling wire extends to the sheath tube, and the other end extends out of the end of the guide tube and is connected to the folded end of the film.
5. The stone removal basket according to claim 3, characterized in that: The two side edges of the film are attached to the outer side walls of two adjacent guide tubes, and the middle part of the film is folded and arranged at one end of the guide tube close to the sheath tube.
6. The stone removal basket according to claim 3, characterized in that: A film is arranged between two adjacent guide tubes, and the two adjacent films are connected to each other to form a film sleeve, one end of the film sleeve is fixedly connected to one end of the guide tube close to the sheath tube, and the other end is folded.
7. The stone removal basket according to claim 1, characterized in that: A protective cover wrapping the guide tube is installed at the end of the sheath tube.
8. The stone removal basket according to claim 7, characterized in that: The protective cover comprises an upper cover and a lower cover which are connected to each other.
9. The stone removal basket according to claim 1, characterized in that: The film protrudes outwards in an arc shape at the middle part of the side away from the sheath tube.
10. The stone removal basket according to claim 1, characterized in that: The film is made of PET material or PDMS material.