Dual-purpose mesh basket for blocking and removing calculus

Abstract

The utility model relates to the field of medical equipment, in particular to a stone blocking and removing dual-purpose mesh basket which comprises a handle shell, a push rod, a metal drawing wire and a mesh basket body. The pushing rod slides on the handle shell in the axis direction, and meanwhile the front end of the pushing rod is fixedly connected with an arc-shaped sliding block; the net basket is fusiform in a natural state, the front end of the net basket is fixed through a fastening cap, the rear end of the net basket is sleeved with a sliding fastening sleeve, the sliding fastening sleeve abuts against the front end face of the handle shell, meanwhile, the rear end of the net basket is connected with a metal drawing wire, and the tail end of the metal drawing wire penetrates through a round hole of a nut at the front end of the handle shell and is fixedly connected with the pushing rod. The arc-shaped sliding block pushes the pushing rod and the metal drawing wire to move, and then the net basket is driven to move and is contracted into a net basket stone taking state of an ellipsoidal structure under the locking effect of the sliding fastening sleeve. Or the net basket is shrunk into a net basket stone blocking state with a cake-shaped structure. The double functions of stone blocking and stone removing in the stone breaking process are integrated, a certain complicated operation process is reduced, and time and cost are saved.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a dual-purpose net basket for preventing and removing stones. Background Art

[0002] A lithotripsy basket, also known as a lithotripter, is an instrument used for endoscopic lithotripsy. It typically consists of a metal basket, connectors, and a housing. It is commonly used during endoscopic surgery to fragment and remove sediment, particularly in cases of urinary obstruction. It can be inserted through the inner diameter of the bladder or ureter into the kidney or bladder to fragment and remove the stones.

[0003] The key to this technology is to prevent the gravel and sediment from entering the body's natural cavities during the lithotripsy process and to remove the gravel from the body. In actual surgery, the stone removal instruments cannot prevent the gravel and sediment from entering other natural cavities of the body, which poses certain risks and causes certain difficulties for the surgeon. The endoscopic lithotripsy baskets currently on the market do not have a stone-blocking function. Their basic design function is to be a low-density metal basket, which is only used for stone removal during the lithotripsy process and cannot prevent the gravel from entering the body's natural cavities. Utility Model Content

[0004] The purpose of the utility model is to provide a dual-purpose net basket for blocking and removing stones, aiming to overcome the defects of the existing technology, match the density of the net basket with the dual design of the gear position, realize the precise positioning of the gear position, and realize the stone blocking and removing function of the net basket.

[0005] To this end, the utility model proposes a dual-purpose net basket for stone removal, comprising a handle shell, a pushing rod, a metal wire drawing, a sliding fastening sleeve, a fastening cap and a net basket; the pushing rod slides in the axial direction of the handle shell, and the front end of the pushing rod is fixedly connected to an arc-shaped slider; the net basket is spindle-shaped in a natural state, the front end of the net basket is fixed by a fastening cap, the rear end of the net basket is provided with a sliding fastening sleeve, and the sliding fastening sleeve is in contact with the front end surface of the handle shell, and the rear end of the net basket is connected to a metal wire drawing, the end of the metal wire drawing passes through the circular hole of the nut at the front end of the handle shell and is fixedly connected to the pushing rod, and the pushing rod and the metal wire drawing are pushed to move by the arc-shaped slider, thereby driving the net basket to move and shrink into an ellipsoidal structure under the locking action of the sliding fastening sleeve. The net basket is in a stone removal state; or it is shrinked into a pancake-shaped structure. The net basket is in a stone blocking state.

[0006] As a preferred technical solution of the present application, a plurality of gear bosses are provided on the side of the push rod, and a plurality of limit grooves are provided in the guide groove of the handle housing.

[0007] As a preferred technical solution of the present application, a wire drawing sheath tube is provided on the outside of the metal wire drawing.

[0008] As a preferred technical solution of the present application, the handle housing is provided with a guide groove along the axial direction, and the push rod is installed in the guide groove.

[0009] As a preferred technical solution of the present application, a limit block is installed in the guide groove, and the limit block is sleeved on the middle part of the push rod and can slide fit.

[0010] As a preferred technical solution of the present application, the exterior of the limit block is fixed to the handle housing.

[0011] As a preferred technical solution of this application, the arc-shaped slider is slidably mounted on the outer side of the cylindrical surface at the front of the handle housing.

[0012] The dual-purpose stone-blocking and stone-removing net basket provided by the utility model has the following beneficial effects: 1. It realizes the dual functions of stone blocking and stone removal in the lithotripsy process, reduces the complicated surgical process to a certain extent, saves time and cost, and is a blessing for patients; 2. The gear design realizes the application of different functions of the net basket during the operation, and the doctor's operation is more precise; the simple and convenient integrated design and the integrated stone-blocking and stone-removing function are the first of their kind in China.

[0013] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings that constitute part of this application are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0015] Fig. 1 This is a structural diagram of the dual-purpose stone-blocking and stone-removing net basket of the present invention;

[0016] Fig. 2 This is a top view of the dual-purpose stone-blocking and stone-removing net basket of the present invention;

[0017] Fig. 3 This is a schematic structural diagram of the stone-blocking dual-purpose basket of the utility model in three states;

[0018] Explanation of the accompanying reference numerals: 1. handle housing; 2. limit block; 3. arc-shaped slider; 4. push rod; 5. brushed metal; 6. brushed sheath tube; 7. sliding fastening sleeve; 8. basket; 9. fastening cap; 11. basket in stone-blocking state; 12. basket in stone-removing state; 13. basket in natural state; 10. nut; 41. gear boss. DETAILED DESCRIPTION

[0019] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0020] like Figs. 1-3 As shown, the dual-purpose net basket for preventing and removing stones of the present invention includes a handle shell 1, a limit block 2, an arc-shaped slider 3, a push rod 4, a metal wire drawing 5, a wire drawing sheath tube 6, a sliding fastening sleeve 7, a fastening cap 9 and a net basket 8.

[0021] Specifically, the handle housing 1 is provided with a guide groove along the axial direction, the push rod 4 is installed in the guide groove, the limit block 2 is sleeved on the middle part of the push rod 4 and can slide together, and at the same time, the outside of the limit block 2 is fixed to the handle housing 1, and the arc-shaped slider 3 is fixedly connected to the front end of the push rod 4. At the same time, the arc-shaped slider 3 is slidably installed on the outside of the cylindrical surface at the front of the handle housing 1.

[0022] In its natural state, the basket 8 is spindle-shaped, with the front end of the basket 8 secured by a fastening cap 9. A sliding fastening sleeve 7 is fitted around the rear end of the basket 8, which contacts the front end of the handle housing 1. A metal wire 5 is connected to the rear end of the basket 8. The end of the wire 5 passes through a circular hole in a nut 10 at the front end of the handle housing 1 and is fixedly connected to the push rod 4. By pushing the push rod 4 backward, the wire 5 becomes taut, and the basket 8 contracts into an ellipsoidal stone-removing state 12 under the locking action of the sliding fastening sleeve 7. Further pulling the push rod 4 backward causes the basket 8 to contract into a pancake-shaped stone-blocking state 11.

[0023] In this solution, a wire drawing sheath tube 6 is provided on the outside of the metal wire drawing 5. The wire drawing sheath tube 6 protects the structure inside and also has an aesthetic function.

[0024] In addition, a plurality of gear bosses 41 are provided on the side of the push rod 4, and a plurality of limit grooves are provided in the guide groove of the handle shell 1. The gear bosses 41 cooperate with the limit grooves, so that the push rod 4 has multiple gears and the net basket 8 has various shapes.

[0025] The method of using the dual-purpose stone-blocking and stone-removing net basket of the present invention is as follows: during the endoscopic lithotripsy process, the push rod 4 is first pushed backward by the arc-shaped slider 3, and the gear boss 41 is adjusted to the highest position, so that the net basket 8 forms a net basket stone-blocking state 11 with a pancake structure, which is blocked at the cavity opening to prevent the entry of gravel and mud, thereby realizing the stone-blocking function; after the stone crushing is completed, the gear position is lowered according to the size of the gravel and mud, realizing the net basket stone-removing state 12 with an ellipsoidal structure, and the aperture of the net basket is enlarged, and the gravel and mud are loaded into the basket, and the gear position is further lowered to shrink the net basket to form the net basket natural state 13 with a shuttle-shaped structure, thereby realizing the purpose of stone removal.

[0026] The following is a brief description of the working principle and working process of the dual-purpose stone-blocking and stone-removing net basket of the utility model. This patented technology adopts an integrated design, and the gear boss 41 is designed at the pushing part of the shell to achieve precise positioning of stone blocking and stone removal during the lithotripsy process, and the weaving and density of the net basket 8 are adjusted to achieve functions in different gears. The integrated design of this patented technology combines the density of the net basket with the dual design of the gear to achieve precise positioning of the gear and realize the stone-blocking and stone-removing function of the net basket; it reduces certain complicated surgical processes, saves time and costs, is a blessing for patients, and doctors can operate more accurately.

[0027] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A dual-purpose basket for stone removal, characterized in that: It comprises a handle housing (1), a push rod (4), a metal wire drawing (5), a sliding fastening sleeve (7), a fastening cap (9) and a mesh basket (8); the push rod (4) slides along the axis direction of the handle housing (1), and the front end of the push rod (4) is fixedly connected to an arc-shaped slider (3); The net basket (8) is in a spindle shape in a natural state. The front end of the net basket (8) is fixed by a fastening cap (9). The rear end of the net basket (8) is provided with a sliding fastening sleeve (7), and the sliding fastening sleeve (7) is in contact with the front end surface of the handle shell (1). At the same time, the rear end of the net basket (8) is connected with a metal wire (5), and the end of the metal wire (5) passes through the circular hole of the nut (10) at the front end of the handle shell (1) and is fixedly connected to the push rod (4). The arc-shaped slider (3) pushes the push rod (4) and the metal wire drawing (5) to move, thereby driving the net basket (8) to move and shrink into an ellipsoidal structure of the net basket in a stone-taking state (12) or a pancake-shaped structure of the net basket in a stone-blocking state (11) under the locking action of the sliding fastening sleeve (7).

2. The dual-purpose stone-blocking basket according to claim 1, characterized in that: A plurality of gear bosses (41) are provided on the side of the push rod (4), and a plurality of limit grooves are provided in the guide groove of the handle housing (1).

3. The dual-purpose stone-blocking basket according to claim 1, characterized in that: A wire drawing sheath tube (6) is provided on the outside of the metal wire drawing (5).

4. The dual-purpose stone-blocking basket according to claim 1, characterized in that: The handle housing (1) is provided with a guide groove along the axial direction, and the push rod (4) is installed in the guide groove.

5. The dual-purpose stone-blocking basket according to claim 4, characterized in that: A limit block (2) is installed in the guide groove, and the limit block (2) is sleeved on the middle part of the push rod (4) and can be slidably fitted.

6. The dual-purpose stone-blocking basket according to claim 5, characterized in that: The exterior of the limiting block (2) is fixed to the handle housing (1).

7. The dual-purpose stone-blocking basket according to claim 1, characterized in that: The arc-shaped slide block (3) is slidably mounted on the outer side of the cylindrical surface at the front of the handle housing (1).

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