A net basket for removing appendix stones

Abstract

The present invention relates to the technical field of medical equipment, specifically to an appendectomy stone removal basket, comprising a handle and an external wire tube connected to the handle, wherein the handle body is composed of a cylindrical outer tube, a support frame arranged outside the outer tube and a handle arranged at the rear side of the outer tube, the handle is in an inverse arch shape and the finger grip side is wavy, an elastic steel rope and a traction rope are arranged in the external wire tube connected to the handle, a fixed platform is arranged at the end of the external wire tube, a net basket part is arranged on the fixed platform, the main body of the net basket part is composed of a plurality of metal net basket wires and a protective layer covering the outside of the metal net basket wires, the metal net basket wires are gathered into an olive-shaped mesh structure, and a distal metal cap is arranged at the joint of the top of the metal net basket wires. The present invention can provide sufficient protection to the inner cavity of the patient's appendix during operation to avoid internal bleeding, and is easy to operate and use, and has practicality.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, in particular to an appendectomy stone removal net basket. Background Art

[0002] At present, gallstones are a common disease in all countries of the world, and the main cause is irregular diet. According to epidemiological surveys, the incidence of gallstones in large cities in my country is nearly 10%, and in some cities it can even reach 5 to 1; in the United States, the incidence of gallstones is 10% to 15%, and about 1 million new patients with gallstones are diagnosed each year, and about 700,000 patients undergo cholecystectomy each year.

[0003] This type of disease is usually treated with surgical treatment, which means cutting open the patient's bile duct and other tissues to directly remove the stones from the stone site; however, this type of surgery brings a lot of pain to the patient, with large incisions, a long recovery period after surgery, and high surgical costs. Another method is to use minimally invasive surgery, which means first using ultrasound and other methods to treat larger stones, and then using equipment such as stone removal baskets to reach the patient's site and use such equipment to directly remove the stones.

[0004] Compared with traditional surgical procedures, the use of stone removal baskets has smaller incisions and less pain, and is increasingly favored by clinicians. However, the stone removal basket is essentially a set of net-like clamping and collection devices composed of fine metal wires. Although it is in a contracted state when entering the human body, due to the external structure of the metal wires, it is easy to scratch the inside of the human body and cause bleeding in the patient's appendix cavity. Therefore, the existing stone removal baskets cannot provide sufficient protection for the patient's appendix cavity.

[0005] In view of this, the present invention proposes an appendectomy stone removal net basket. Summary of the invention

[0006] The purpose of the present invention is to provide an appendectomy stone removal basket to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] An appendectomy stone removal net basket comprises a handle and an external wire tube connected to the handle, wherein the handle body is composed of a cylindrical outer tube, a support frame arranged outside the outer tube and a handle arranged at the rear side of the outer tube, the handle is in an inverse arch shape and the finger grip side is wavy, an elastic steel rope and a traction rope are arranged in the external wire tube connected to the handle, a fixing platform is arranged at the end of the external wire tube, a net basket part is arranged on the fixing platform, the net basket part body is composed of a plurality of metal net basket wires and a protective layer covering the outside of the metal net basket wires, the metal net basket wires are gathered into an olive-shaped mesh structure, and a distal metal cap is arranged at the joint of the top end of the metal net basket wires; a connecting rod is connected to the bottom of the handle. The outer cylinder is provided with a hollow inner cavity, the connecting rod is arranged inside the inner cavity, the upper and lower ends of the connecting rod are provided with a piston baffle with the same inner diameter as the inner cavity, the space between the piston baffle at the lower end of the connecting rod and the inner cavity is provided with a spring, the elastic steel rope and the traction rope are connected to the piston baffle at the upper end of the connecting rod from the space between the inner cavity and the outer cylinder; the elastic steel rope is twisted by multiple steel ropes and connected to the bottom of each metal mesh basket wire through a fixing platform, the metal mesh basket wire is provided with multiple fixing rings, the traction rope is composed of multiple parallel steel wires with smooth surfaces, and the steel wire of each traction rope is wound around the metal mesh basket wire and fixed to the outer edge of the protective layer through a fixing ring.

[0009] Furthermore, a circular elastic rubber ring is provided on the circular edge of the protective layer, and the metal mesh basket wire is an arc-shaped memory metal circular frame.

[0010] Furthermore, the unstressed dimension of the elastic rubber ring is half the length of the minor axis of the metal basket wire.

[0011] Compared with the prior art, the beneficial effects of the present invention are: the metal mesh basket is wrapped with a protective layer, which can provide sufficient protection to the patient's appendix cavity during operation to prevent internal bleeding when entering and exiting the patient's body; in addition, the deformation of the metal mesh basket and the shedding and contraction of the protective layer are synchronous operations, and the protective layer can also hold the stones in this process to prevent the stones from falling from the mesh basket. The overall design is easy to operate and suitable for clinical promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the appearance diagram of the overall structure of the present invention;

[0013] Figure 2 is a cross-sectional view of the handle portion of the present invention;

[0014] Figure 3 This is a detailed view of the basket part of the present invention.

[0015] In the figure: 1. handle; 11. hand grip; 12. support frame; 13. outer cylinder; 14. connecting rod; 15. piston baffle; 16. inner cavity; 17. spring; 2. external wire tube; 21. elastic steel rope; 22. traction rope; 23. fixed platform; 3. basket part; 31. distal metal cap; 32. metal basket wire; 33. elastic rubber ring; 34. fixing ring; 35. protective layer. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] 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.

[0018] 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 invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0019] See also Figure 1-3 , the present invention provides a technical solution:

[0020] A net basket for appendectomy includes a handle 1 and an external wire tube 2 connected to the handle 1. The main body of the handle 1 is composed of a cylindrical outer tube 13, a support frame 12 arranged outside the outer tube 13 and a handle 11 arranged at the rear side of the outer tube 13. The handle 11 is in an inverse arch shape and the finger grip side is wavy. An elastic steel rope 21 and a traction rope 22 are arranged in the external wire tube 2 connected to the handle 1. A fixing platform 23 is arranged at the end of the external wire tube 2. A net basket part 3 is arranged on the fixing platform 23. The main body of the net basket part is composed of multiple metal net basket wires 32 and a protective layer 35 covering the outside of the metal net basket wires 32. The metal net basket wires 32 are gathered into an olive-shaped mesh structure. A distal metal cap 31 is arranged at the joint of the top of the metal net basket wires 32.

[0021] A connecting rod 14 is connected to the bottom of the handle 11, a hollow inner cavity 16 is provided in the outer tube 13, the connecting rod 14 is arranged inside the inner cavity 16, and a piston baffle 15 with the same inner diameter as the inner cavity 16 is provided at the upper and lower ends of the connecting rod 14. A spring 17 is provided in the space between the piston baffle 15 at the lower end of the connecting rod 14 and the inner cavity 16, and an elastic steel rope 21 and a traction rope 22 are connected to the piston baffle 15 at the upper end of the connecting rod 14 from the space between the inner cavity 16 and the outer tube 13.

[0022] The elastic steel rope 21 is twisted together from multiple steel ropes and connected to the bottom of each metal mesh basket wire 32 through a fixing platform 23. A plurality of fixing rings 34 are provided on the metal mesh basket wire 32. The traction rope 22 is composed of multiple parallel steel wires with smooth surfaces. The steel wire of each traction rope 22 is wound around the metal mesh basket wire 32 and fixed to the outer edge of the protective layer 35 through a fixing ring 34.

[0023] A circular elastic rubber ring 33 is provided on the circular edge of the protective layer 35, and the metal basket wire is an arc-shaped memory metal circular frame.

[0024] Specifically, when the device is used, by pressing the handle 11, the connecting rod 14 moves downward, driving the elastic steel rope 21 and the traction rope 22 to pull, until the metal mesh basket wire 32 is pulled against the fixed platform 23 to deform, the mesh basket part bulges, and the distance between the metal mesh basket wires 32 becomes larger, so that the stones can enter therein; in addition, the traction rope 22 simultaneously pulls the protective layer 35 along the metal mesh basket wire 32 to overcome the tightening force of the elastic rubber ring 33, the elastic rubber ring 33 expands, and the protective layer 35 wrapped around the basket net falls off in the opposite direction, so that the stones can enter. When the handle 11 is released, the spring 17 rebounds, so that the elastic steel rope 21 and the traction rope 22 are relaxed, the metal mesh basket wire 32 made of memory metal material returns to its initial shape, the mesh basket part is contracted, and at the same time, the protective layer 35 is wrapped up again under the pre-tightening force of the elastic rubber ring 33, so as to wrap up the stones.

[0025] The unstressed dimension of the elastic rubber ring 33 is half of the length of the minor axis of the metal basket wire 32 , so that the elastic rubber ring 33 uses spring force to pull the protective layer 35 to wrap most of the metal basket wire 32 without stress.

[0026] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An appendectomy stone removal basket, comprising a handle (1) and an external wire tube (2) connected to the handle (1), characterized in that: The handle (1) is mainly composed of a cylindrical outer tube (13), a support frame (12) arranged outside the outer tube (13), and a handle (11) arranged at the rear side of the outer tube (13); the handle (11) is in an inverse arch shape and the finger grip side is wavy; an elastic steel rope (21) and a traction rope (22) are arranged in the external wire tube (2) connected to the handle (1); a fixing platform (23) is arranged at the end of the external wire tube (2); a net basket part (3) is arranged on the fixing platform (23); the main body of the net basket part is mainly composed of a plurality of metal net basket wires (32) and a protective layer (35) covering the outside of the metal net basket wires (32); the metal net basket wires (32) are gathered into an olive-shaped mesh structure; a distal metal cap (31) is arranged at the joint of the top of the metal net basket wires (32); a connecting rod (14) is connected to the bottom of the handle (11); a hollow inner cavity (16) is arranged in the outer tube (13); The connecting rod (14) is arranged inside the inner cavity (16); the upper and lower ends of the connecting rod (14) are both provided with a piston baffle (15) having the same inner diameter as the inner cavity (16); a spring (17) is provided in the space between the piston baffle (15) at the lower end of the connecting rod (14) and the inner cavity (16); the elastic steel rope (21) and the traction rope (22) are connected to the piston baffle (15) at the upper end of the connecting rod (14) from the space between the inner cavity (16) and the outer cylinder (13); the elastic steel rope (21) is twisted from a plurality of steel ropes and is respectively connected to the bottom of each metal mesh basket wire (32) through a fixing platform (23); a plurality of fixing rings (34) are provided on the metal mesh basket wire (32); the traction rope (22) is composed of a plurality of parallel steel wires with smooth surfaces; the steel wire of each traction rope (22) is wound around the metal mesh basket wire (32) and fixed to the outer edge of the protective layer (35) through a fixing ring (34).

2. The appendix stone removal basket according to claim 1, characterized in that: The circular edge of the protective layer (35) is provided with a circular elastic rubber ring (33), and the metal basket wire is an arc-shaped memory metal round frame.

3. The appendix stone removal basket according to claim 2, characterized in that: The unstressed dimension of the elastic rubber ring (33) is half the length of the minor axis of the metal basket wire (32).

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