Novel semi-closed calculus removing mesh basket

Abstract

The utility model relates to the technical field of calculus removing net baskets, in particular to a novel semi-closed calculus removing net basket which comprises a handle, a push handle, a sheathing canal, a push-pull rope and a net basket part, the push handle is installed on the handle, the sheathing canal is located at one end of the handle, one end of the push-pull rope penetrates through the sheathing canal to be connected with the push handle, and the other end of the push-pull rope is connected with the net basket part. One end of the push-pull rope is connected with the push handle, the other end of the push-pull rope is connected with the mesh basket part, when the push handle is pushed, the mesh basket part expands outwards under the traction of the push-pull rope, when the mesh basket part expands, the mesh basket part is in an umbrella shape with three hollowed-out faces, and meanwhile a thin film is arranged on each hollowed-out face of the mesh basket part. According to the utility model, the thin film is arranged at the hollow part of the mesh basket part, so that liquid entering the fallopian tube is obviously accelerated after flowing through the umbrella-shaped thin film and forms pressure difference with surrounding slowly flowing fluid, at the moment, the rear end of the umbrella-shaped thin film can generate adsorption force inwards, floating stones are easily sucked into the umbrella-shaped thin film structure, and the mesh basket part is shrunk, so that the salpingosis is prevented from falling off. And the calculus is wrapped by the film and is not easy to leak.

Description

Technical Field

[0001] The utility model relates to the technical field of stone-collecting net baskets, in particular to a novel semi-enclosed stone-collecting net basket. Background Art

[0002] During ureteral stone surgery, we usually use a stone removal basket for stone removal. The stone removal basket is a passive surgical instrument, usually composed of a head, a rod or a soft catheter and a handle, wherein the head is a grasping piece or other removal device, and the operation of the head is transmitted and controlled by the handle operation. During surgery, the stone removal basket is mainly used for endoscopic operations to remove tissues, foreign bodies or crushed stones. The basket part is a mesh instrument, usually woven from nickel-titanium metal, which has good memory, flexibility and strength, and can capture stone fragments to prevent the fragments from being left in the body or migrating to other parts.

[0003] Patent application number: CN201721212156.1 is retrieved and disclosed as a stone removal basket, including an operating handle, an outer sheath tube and a basket body, wherein the bottom of the basket body is connected to the operating handle through the outer sheath tube, and the basket body is wound by at least two groups of basket wires, all of which meet at the top of the basket body, and each group of basket wires is formed by at least two metal wires being wound around each other, and a number of slits are formed when two or more metal wires are wound around each other, and at least one metal wire in each group of basket wires passes through the slits at the tops of other groups of basket wires, and the slits at the tops of each group of basket wires are all passed through by the metal wires of other groups of basket wires. Compared with other stone removal baskets, the utility model has a higher strength of the basket body, greatly improved safety of surgical operation, large friction between the basket body and the stone, making it easier to fix and grasp the stone, and good elasticity, and can be fully opened when released in the body.

[0004] It can be seen that although the front-end basket design of the stone removal basket can theoretically grasp stones very well, fine powdery stones and irregular stones that are difficult to grasp will inevitably appear during the operation. At this time, the larger aperture of the stone removal basket makes it difficult to successfully grasp the stones. During ureteroscopic surgery, it is usually necessary to inject solutions such as saline to keep the ureter or kidney full so as to obtain a clearer surgical field of view. The same is true for the stone removal process. During the process of injecting the solution, the ureter or kidney will produce flow due to the internal and external pressure difference, and the gravel will float in the solution, which is not convenient for the stone removal basket to grasp the gravel. Utility Model Content

[0005] The purpose of the utility model is to provide a novel semi-enclosed stone-taking net basket to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides a novel semi-enclosed stone removal basket, comprising a handle, a push handle, a sheath tube, a push-pull rope and a basket part, the push handle being installed on the handle, the sheath tube being located at one end of the handle, one end of the push-pull rope passing through the sheath tube and connected with the push handle, and the other end of the push-pull rope being connected with the basket part, when the push handle is pushed, the basket part expands outward under the traction of the push-pull rope, and when the basket part expands, it presents an "umbrella" shape with three sides hollowed out, and a film is provided on each hollow side of the basket part.

[0007] As a further improvement of the technical solution, when the push handle is pushed forward, the basket portion expands outward with the film, and the film presents an "umbrella"-shaped structure.

[0008] As a further improvement of the technical solution, when the push handle is pushed backward, the basket portion brings the film inwardly together.

[0009] As a further improvement of the technical solution, the basket portion includes a plurality of basket wires, and the basket portion is made of nickel-titanium metal.

[0010] As a further improvement of the technical solution, the film is polyurethane.

[0011] As a further improvement of the technical solution, the total length of the push-pull rope and the basket part is one meter.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] In this new semi-closed stone removal basket, a thin film is set in the hollow part of the basket, so that the fluid entering the fallopian tube is significantly accelerated after passing through the umbrella-shaped film, forming a pressure difference with the surrounding slowly flowing fluid. According to Bernoulli's principle, the rear end of the umbrella-shaped film will generate an inward adsorption force, making it easy for floating stones to be "absorbed" into the umbrella-shaped film structure. At this time, the basket is contracted and the elastic film can wrap the stones to prevent them from leaking out. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the embodiment of the utility model in an unused state;

[0015] Figure 2 It is a schematic diagram of the overall structure of the embodiment of the utility model in use state;

[0016] Figure 3 This is a schematic diagram of the structure of the basket portion of an embodiment of the utility model.

[0017] The meaning of each number in the figure is:

[0018] 1. Handle; 2. Push handle; 3. Sheath; 4. Push-pull rope; 5. Basket; 6. Film. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0022] For examples, see Figure 1-Figure 3 As shown, this embodiment provides a novel semi-enclosed stone removal basket, including a handle 1, a push handle 2, a sheath 3, a push-pull rope 4 and a basket portion 5, and the total length of the push-pull rope 4 and the basket portion 5 is one meter.

[0023] Among them, the push handle 2 is installed on the handle 1, the sheath 3 is located at one end of the handle 1, one end of the push-pull rope 4 passes through the sheath 3 and is connected to the push handle 2, and the other end of the push-pull rope 4 is connected to the basket part 5. When the push handle 2 is pushed, the basket part 5 expands outward under the traction of the push-pull rope 4. When the basket part 5 expands, it presents an "umbrella" shape with three sides hollowed out. During the operation, the device is mainly operated under endoscopy to remove tissues, foreign matter or crush stones.

[0024] The basket part is a mesh device, usually woven from nickel-titanium metal. Nickel-titanium metal has good memory, flexibility and strength, which can capture stone fragments and prevent them from being left in the body or migrating to other parts.

[0025] During ureteroscopy, it is usually necessary to inject solutions such as physiological saline to keep the ureter or kidney full, so as to obtain a clearer surgical field of view. The same is true for stone removal. During the injection of the solution, the ureter or kidney will flow due to the pressure difference between the inside and the outside. In order to fully capture the broken stones, a film 6 is provided on each hollow basket part 5. The film 6 is a transparent elastic material polyurethane and is installed on the front frame of the basket part 5 to form an umbrella-like structure similar to the near handle end contracting and the far handle end expanding. That is, when the push handle 2 is pushed backward, The basket portion 5 brings the film 6 inwardly to retract, and when the push handle 2 is pushed forward, the basket portion 5 brings the film 6 to expand outward, and the film 6 presents an "umbrella"-shaped structure. This type of structure will significantly accelerate the fluid in the fluid because the fluid flows through the umbrella-shaped structure, forming a pressure difference with the surrounding slowly flowing fluid. According to the Bernoulli principle, during isometric flow, the greater the flow rate, the smaller the pressure. At this time, the rear end of the umbrella-shaped structure will generate an adsorption force into the umbrella, making it easy for floating stones to be "absorbed" into the umbrella-shaped structure. At this time, the basket portion 5 is contracted, and the elastic film 6 can wrap the stones to prevent them from leaking out.

[0026] When the utility model is used for a novel semi-enclosed stone removal net basket, during specific use, the push-pull rope 4 and the net basket portion 5 are placed near the stone during the operation. When the stone is broken, the push handle 2 is pushed forward, and the net basket portion 5 expands outward with the film 6. The film 6 is in an "umbrella"-shaped structure. This type of structure will be significantly accelerated in the fluid because the fluid flows through the umbrella-shaped structure, forming a pressure difference with the surrounding slowly flowing fluid. According to Bernoulli's principle, at this time, the rear end of the umbrella-shaped structure will generate an adsorption force into the umbrella, so that the floating stone is easily "absorbed" into the umbrella-shaped structure. At this time, the net basket portion 5 is contracted, and the elastic film 6 can wrap the stone to prevent the stone from leaking out easily.

[0027] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A novel semi-enclosed stone removal basket, comprising a handle (1), a push handle (2), a sheath tube (3), a push-pull rope (4) and a basket portion (5), wherein the push handle (2) is mounted on the handle (1), the sheath tube (3) is located at one end of the handle (1), one end of the push-pull rope (4) passes through the sheath tube (3) and is connected to the push handle (2), and the other end of the push-pull rope (4) is connected to the basket portion (5), characterized in that: When the push handle (2) is pushed, the net basket portion (5) expands outwards under the traction of the push-pull rope (4), and when the net basket portion (5) expands, it takes on an "umbrella" shape with three sides hollowed out, and a film (6) is provided on each side of the hollowed-out net basket portion (5).

2. The novel semi-enclosed stone-removing basket according to claim 1 is characterized in that: When the push handle (2) is pushed forward, the basket portion (5) expands outward with the film (6), and the film (6) presents an "umbrella"-shaped structure.

3. The novel semi-enclosed stone-removing basket according to claim 2 is characterized in that: When the push handle (2) is pushed backward, the basket portion (5) and the film (6) are retracted inward.

4. The novel semi-enclosed stone-removing basket according to claim 1 is characterized in that: The basket part (5) comprises a plurality of basket wires, and the basket part (5) is made of nickel-titanium metal.

5. The novel semi-enclosed stone-removing basket according to claim 1 is characterized in that: The film (6) is polyurethane.

6. The novel semi-enclosed stone-removing basket according to claim 1 is characterized in that: The total length of the push-pull rope (4) and the basket part (5) is one meter.

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