Winding rotating wheel assembly of loop ligature device

Abstract

The winding rotating wheel assembly comprises an instrument main body, a gun barrel is arranged at the front end of the instrument main body, a rubber ring is arranged at the front end of the gun barrel, a rotating wheel is rotationally connected to the rear end of the instrument main body, a percussion rope is wound on the rotating wheel and connected with the rubber ring, and the percussion rope is connected with the rotating wheel. A limiting piece is further arranged on the instrument body, a limiting gear ring is arranged on the rotating wheel in the circumferential direction, a limiting protrusion is arranged on the limiting piece, and the limiting protrusion makes contact with the limiting gear ring to limit the rotating wheel to rotate reversely. By means of the mode, according to the winding rotating wheel assembly of the loop ligature device, the limiting piece and the rotating wheel are matched so that the rotating wheel can only rotate in one direction, the problem that a percussion rope is knotted and wound is avoided, normal and stable use of instruments is guaranteed, and smooth operation is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of ligation apparatus, in particular to a wire winding rotating wheel assembly of the ligation apparatus. Background Art

[0002] The ligation device is a medical device used to treat internal hemorrhoids, mixed hemorrhoids, lower sigmoid colon and rectal polyps. During the anorectal hemorrhoid surgery, the attending physician needs to hold the anoscope in one hand and the ligation device in the other hand. The attending physician can use the anoscope to better see the patient's internal body tissue, and the ligation device is used to ligate the elastic wire ligation ring on the patient's internal body tissue. The ligation device needs to have the following functions: sucking up the internal body tissue, pushing out the elastic wire ligation ring and ligating it on the body tissue, tightening the elastic wire so that the ligation ring can tightly bind the body tissue, and cutting the elastic wire to remove the entire ligation device.

[0003] Existing patents CN202110723241.9, CN202110479922.5, etc. disclose various ligation devices. If the doctor misoperates and causes the rotary wheel to reverse, the firing cord will become tangled and entangled, seriously affecting the normal progress of the operation. Utility Model Content

[0004] The main technical problem solved by the utility model is to provide a wire winding rotating wheel assembly for a ligation device, which can only rotate in one direction through the cooperation of a limit plate and a rotating wheel, thereby avoiding the problem of knotting and entanglement of the firing line, ensuring the normal and stable use of the instrument and the smooth progress of the operation.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a wire winding wheel assembly of a ligation device, including an instrument body, a gun barrel is provided at the front end of the instrument body, a rubber ring is provided at the front end of the gun barrel, a rotating wheel is rotatably connected to the rear end of the instrument body, a firing cord is wound around the rotating wheel, and the firing cord is connected to the rubber ring, a limiting plate is also provided on the instrument body, a limiting gear ring is provided on the circumference of the rotating wheel, a limiting protrusion is provided on the limiting plate, and the limiting protrusion is in contact with the limiting gear ring to limit the reverse rotation of the rotating wheel.

[0006] In a preferred embodiment of the utility model, the base of the limiting plate and the limiting protrusion are elastically connected, and the positive rotation of the rotating wheel causes the teeth of the limiting gear ring to push the limiting protrusion to elastically deviate to the right side, and the reverse rotation of the rotating wheel causes the limiting protrusion to press against the teeth of the limiting gear ring to limit the reverse rotation of the rotating wheel.

[0007] In a preferred embodiment of the present invention, the positive rotation of the rotating wheel causes the teeth to contact the side of the limiting protrusion to push the limiting plate, and the reverse rotation of the rotating wheel causes the teeth to contact the top of the limiting protrusion.

[0008] In a preferred embodiment of the present invention, the base of the limiting plate is fixedly connected to the instrument body.

[0009] In a preferred embodiment of the present invention, the outer side of the rotating wheel has transmission teeth, and the transmission teeth are connected to the power component in the instrument body to drive the rotating wheel to rotate.

[0010] The beneficial effects of the utility model are as follows: the wire winding wheel assembly of the ligation device of the utility model absorbs the wheel by a limit plate, so as to ensure that the rotation can only be fired in one direction, avoid the problem of knotting and entanglement of the firing cord due to reverse rotation of the wheel, ensure the normal practicality of the instrument, and ensure the smooth progress of the operation.

[0011] The wire winding rotating wheel assembly of the ligation device of the utility model cooperates with the limiting gear ring and the limiting protrusion. When the rotating wheel rotates forward, the limiting gear ring pushes the limiting protrusion to elastically deform so as to ensure the normal rotation of the rotating wheel. When the rotating wheel is reversed, the limiting protrusion presses against the limiting gear ring. The utility model has a simple structure, is easy to install and has a good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0013] Figure 1 It is a structural schematic diagram of a preferred embodiment of a winding wheel assembly of the ligation device of the utility model;

[0014] Figure 2 yes Figure 1 Schematic diagram of the local structure;

[0015] The markings of the components in the accompanying drawings are as follows: 1. instrument body, 2. gun barrel, 3. rubber ring, 4. rotating wheel, 5. firing rope, 51. transmission tooth, 52. limiting gear ring, 6. limiting plate, 61. base, 62. limiting protrusion. DETAILED DESCRIPTION

[0016] The technical scheme in the embodiment of the utility model will be described clearly and completely below. The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification, so that people familiar with this technology can understand and read them, and are not used to limit the limiting conditions that can be implemented in the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that can be produced by the utility model and the purpose that can be achieved, should still fall within the scope that the technical content disclosed in the utility model can cover. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of narration, and are not used to limit the scope that can be implemented. The change or adjustment of the relative relationship, without substantial change of the technical content, should also be regarded as the scope that can be implemented in the utility model.

[0017] See also Figure 1 and Figure 2 A wire winding wheel assembly of a ligation device includes an instrument body 1, a gun barrel 2 is provided at the front end of the instrument body, a rubber ring 3 is provided at the front end of the gun barrel 2, a wheel 4 is rotatably connected to the rear end of the instrument body 1, a firing cord 5 is wound around the wheel 4, and the firing cord 5 is connected to the rubber ring 3. The outer side of the wheel 4 has a transmission tooth 51, and the transmission tooth 51 is connected to the power component in the instrument body 1 to drive the wheel 4 to rotate. During the surgical operation, when the suction nozzle of the instrument body 1 is aimed at the human tissue, the negative pressure device is started to absorb the human tissue, and the wire winding wheel 4 drives the firing cord 5 to move backward, so that the rubber ring 3 is forward to wrap around the human tissue. The suction nozzle is located at the front end of the gun barrel 2, and the negative pressure device and the power component that drives the wheel 4 to rotate are conventional structures in the field, which are not drawn in the figure and will not be repeated here.

[0018] The apparatus body 1 is also provided with a limiting piece 6. The base 61 of the limiting piece 6 is fixedly connected to the apparatus body 1. The limiting piece 6 is located at the lower end of the rotating wheel 4, and the limiting protrusion 62 of the limiting piece 6 is elastically connected to the base 61 of the limiting piece 6, and the limiting protrusion 62 can rotate relative to the base 61.

[0019] A limiting gear ring 52 is provided on the circumference of the rotating wheel 4, and the limiting gear ring 52 is distributed in the middle area of ​​the rotating wheel 4. The limiting protrusion 62 contacts the limiting gear ring 52 to limit the rotating wheel 4 from rotating in reverse.

[0020] When the rotating wheel 4 rotates forward, the teeth of the limiting gear ring 52 push the limiting protrusion 62 to elastically deflect to the right. Figure 2 The teeth contact the side of the limiting protrusion 62. When the rotating wheel 4 rotates, the teeth push the limiting protrusion 62 to deflect to the right. Since the limiting protrusion 62 can be elastically deformed relative to the base 61, the limiting protrusion is pushed and the teeth can always pass through the limiting protrusion 62, thereby realizing positive rotation.

[0021] When the rotating wheel 4 rotates in reverse, the limiting protrusion 62 abuts against the teeth of the limiting gear ring 52 to limit the rotating wheel 4 from rotating in reverse. Figure 2 The teeth contact the top of the limiting protrusion 62 and are absorbed as a protrusion. Due to the support of the base 61, the teeth cannot effectively press down the limiting protrusion 62. Therefore, the rotating wheel 4 is restricted from rotating and cannot be reversed, thereby realizing the limiting function.

[0022] Different from the prior art, the wire winding wheel assembly of the ligation instrument of the utility model can only rotate in one direction through the cooperation of the limit plate and the wheel, thereby avoiding the problem of knotting and entanglement of the firing cord, ensuring the normal and stable use of the instrument and the smooth progress of the operation.

[0023] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A wire winding wheel assembly of a ligation device, comprising an instrument body, a gun barrel is provided at the front end of the instrument body, and a rubber ring is provided at the front end of the gun barrel, characterized in that: The rear end of the instrument body is rotatably connected to a rotating wheel, a firing rope is wound around the rotating wheel, and the firing rope is connected to a rubber ring. A limiting plate is also provided on the instrument body, and a limiting gear ring is provided on the circumference of the rotating wheel. The limiting plate has a limiting protrusion, and the limiting protrusion contacts the limiting gear ring to limit the reversal of the rotating wheel.

2. The wire winding wheel assembly of the ligation device according to claim 1, characterized in that: The base of the limiting plate is elastically connected to the limiting protrusion. When the rotating wheel rotates forward, the teeth of the limiting gear ring push the limiting protrusion to elastically deviate to the right side. When the rotating wheel rotates reversely, the limiting protrusion presses against the teeth of the limiting gear ring to limit the reverse rotation of the rotating wheel.

3. The wire winding wheel assembly of the ligation device according to claim 2, characterized in that: The positive rotation of the rotating wheel causes the teeth to contact the side of the limiting protrusion to push the limiting plate, and the reverse rotation of the rotating wheel causes the teeth to contact the top of the limiting protrusion.

4. The wire winding wheel assembly of the ligation device according to claim 1, characterized in that: The base of the limiting piece is fixedly connected to the instrument body.

5. The wire winding wheel assembly of the ligation device according to any one of claims 1 to 4, characterized in that: The outer side of the rotating wheel is provided with transmission teeth, and the transmission teeth are connected with the power component in the instrument body to drive the rotating wheel to rotate.

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