Novel polyp resection device

Abstract

The utility model discloses a novel polyp resection device which comprises a polyp resection assembly, a driving assembly used for driving a local part of the polyp resection assembly to stretch out or retract is movably arranged on the surface of the polyp resection assembly, and a positioning assembly used for preventing the driving assembly from freely sliding is arranged between the driving assembly and the polyp resection assembly. The positioning assembly comprises a plurality of arc-shaped grooves which are formed in the axial direction of the polyp excision assembly at equal intervals; the clamping ring is pressed through the pressing piece, so that the clamping ring is aligned with the sliding sleeve, the driving assembly can be unlocked, at the moment, the driving assembly can slide to achieve telescopic operation on the metal belt, and the clamping ring and the sliding sleeve can be staggered and clamped into an inner cavity of the corresponding arc-shaped groove through the elastic acting force of the spring by loosening the pressing piece. Therefore, the driving assembly can be stably kept at a certain position on the handle, the phenomenon that the driving assembly slides at will when the driving assembly is loosened is effectively avoided, and polyp resection operation is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of polypectomy, in particular to a novel polypectomy device. Background Art

[0002] Polyps refer to the growths on the surface of human tissues. Modern medicine usually refers to the growths on the surface of human mucosa as polyps, including hyperplastic, inflammatory, hamartoma, adenoma and other tumors. Polyps are a type of benign tumor. The clinical manifestations are mostly inflammatory polyps, adenomatous polyps and certain gastrointestinal polyposis syndromes. Although these lesions are benign, some of them have a tendency to become malignant.

[0003] The existing patent document with the publication number CN219557532U discloses a polypectomy device, which adopts an innovative structural design. The structure is simpler and easier to use, which greatly reduces the failure rate. The three-stage design of "pull rope + connecting tube + snare head" of traditional polypectomy products is abandoned, and a cut "hard metal belt" replaces the traditional three-stage structure, which greatly saves costs while improving product reliability. The problem of "snare head" falling off that has plagued the industry for many years will not occur, nor will the connecting tube and the outer tube be stuck and unable to be recovered after the outer tube is bent in the patient's body, nor will the connecting tube and the outer tube be stuck and unable to extend the snare head after the outer tube is bent in the patient's body. It can easily cope with endoscopic minimally invasive polypectomy surgery, and can also be generally applicable to application scenarios where the outer tube needs to be bent due to relatively complex natural cavities of the human body.

[0004] Although the above-mentioned polypectomy can solve the corresponding technical problems, when the slip ring moves forward and backward along the handle to drive the hard metal belt to extend or retract the outer tube, it is difficult for the slip ring to stably maintain the desired position when the handle is released, so that the slip ring is easy to slide randomly and cause a certain impact on the polypectomy operation of the snare head. Therefore, a new type of polypectomy is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a novel polypectomy device for solving the problems raised by the above-mentioned background technology.

[0006] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0007] A novel polypectomy device, comprising:

[0008] A polypectomy component, the surface of which is provided with a driving component for driving a local part of the polypectomy component to extend or retract, and a positioning component for preventing the driving component from sliding randomly is provided between the driving component and the polypectomy component;

[0009] Among them, the positioning component includes a plurality of arc-shaped grooves arranged at equal intervals along the axial direction of the polyp resection component. A clamping ring that can be clamped into the inner cavity of the corresponding arc-shaped groove is movably arranged on the driving component, and a pressing member for facilitating the pressing operation of the clamping ring is also arranged on the driving component.

[0010] As a preferred technical solution, the polyp resection component includes a handle. The top of the handle is communicated with a flexible sheath tube. A metal band is jointly penetrated between the handle and the flexible sheath tube. The top end of the metal band forms a snare head for snaring and cutting lesions.

[0011] As a preferred technical solution, a fixing ring is fixedly connected to the bottom end of the handle.

[0012] As a preferred technical solution, the driving component includes a sliding sleeve sleeved on the surface of the handle. Two symmetrically arranged movable rings are fixedly connected to the surface of the sliding sleeve. The bottom end of the metal band is riveted and fixed to the sliding sleeve and is electrically connected to the electrode post on the sliding sleeve.

[0013] As a preferred technical solution, a plurality of the arc-shaped grooves are equidistantly opened up and down on the surface of the handle. The clamping ring is movably arranged on the sliding sleeve. The pressing member is arranged on one of the movable rings, and a through groove for the horizontal movement of the clamping ring is opened on the sliding sleeve.

[0014] As a preferred technical solution, the central axes of the handle and the sliding sleeve are on the same straight line. The central axes of the arc-shaped groove and the clamping ring are on the same straight line, and the arc-shaped groove and the central axis of the sliding sleeve are arranged parallel to each other.

[0015] As a preferred technical solution, the inner and outer diameters of the sliding sleeve and the clamping ring are the same, and the inner diameter of the arc-shaped groove is the same as the inner diameter of the clamping ring.

[0016] As a preferred technical solution, the pressing member includes a pressing rod movably penetrating through one of the movable rings. One end of the pressing rod extends into the inner cavity of the through groove and is fixedly connected to the outer surface of the clamping ring. The other end of the pressing rod is fixedly connected to a pressing block, and the pressing block is located in the inner cavity of the movable ring.

[0017] As a preferred technical solution, a through hole for the pressing rod to pass through is opened on one of the movable rings, and the inner wall surface of the through hole is slidably connected to the surface of the pressing rod.

[0018] As a preferred technical solution, a spring is sleeved on the surface of the pressing rod, and both ends of the spring are fixedly connected to one of the movable rings and the pressing block respectively.

[0019] The utility model has at least the following beneficial effects:

[0020] The beneficial effect of the utility model of the present application is that the driving assembly can be unlocked by pressing the clamping ring through the pressing piece so that the clamping ring and the sliding sleeve are aligned. At this time, the driving assembly can be slid to realize the extension and retraction operation of the metal belt. By loosening the pressing piece, the clamping ring and the sliding sleeve can be staggered and stuck to the inner cavity of the corresponding arc groove through the elastic force of the spring, so that the driving assembly can be stably maintained at a certain position on the handle, effectively avoiding the phenomenon of random sliding of the driving assembly when the driving assembly is loosened, so as to facilitate the polypectomy operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the structure of a novel polypectomy device of the utility model;

[0022] Figure 2 It is a schematic diagram of the structure of the handle, driving assembly and positioning assembly of a novel polypectomy device of the utility model;

[0023] Figure 3 This utility model is a new type of polypectomy device Figure 2 Schematic diagram of the enlarged structure of point A.

[0024] In the figure: 1. Polypectomy assembly; 11. Handle; 12. Flexible sheath; 13. Metal belt; 14. Fixed ring; 2. Drive assembly; 21. Sleeve; 22. Movable ring; 3. Positioning assembly; 31. Arc groove; 32. Clamp; 33. Pressing piece; 331. Pressure rod; 332. Pressure block; 333. Spring; 34. Through groove. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figures 1-3 The embodiment of the utility model provides a novel polypectomy device, comprising: a polypectomy component 1, a driving component 2 for driving a local part of the polypectomy component 1 to extend or retract, and a positioning component 3 for preventing the driving component 2 from sliding randomly, the driving component 2 is movably arranged on the surface of the polypectomy component 1, and the positioning component 3 is arranged between the polypectomy component 1 and the driving component 2; the positioning component 3 comprises a plurality of arc grooves 31 equidistantly arranged along the axial direction of the polypectomy component 1, a clamping ring 32 which can be clamped into the corresponding inner cavity of the arc groove 31 is movably provided on the driving component 2, and a pressing member 33 for facilitating the pressing operation of the clamping ring 32 is also provided on the driving component 2.

[0027] The polypectomy assembly 1 comprises a handle 11, the top of which is connected to a flexible sheath 12, a metal belt 13 is passed through the handle 11 and the flexible sheath 12, and the top of the metal belt 13 forms a snare head for snare and cutting lesions.

[0028] The bottom end of the handle 11 is fixedly connected with a fixing ring 14 , and the fixing ring 14 can facilitate the operator to hold and exert force.

[0029] Among them, the driving component 2 includes a sleeve 21 slidably mounted on the surface of the handle 11, and two symmetrical movable rings 22 are fixedly connected to the surface of the sleeve 21. The bottom end of the metal belt 13 is fixed to the sleeve 21 by riveting and is electrically connected to the electrode column on the sleeve 21. During the polypectomy operation, electrocoagulation hemostasis can be performed by energizing the snare head.

[0030] A plurality of arc grooves 31 are equidistantly provided on the surface of the handle 11 , a snap ring 32 is movably provided on the sleeve 21 , a pressing member 33 is provided on one of the movable rings 22 , and a through groove 34 is provided on the sleeve 21 for the snap ring 32 to move horizontally.

[0031] Among them, the handle 11 and the central axis of the sleeve 21 are on the same straight line, the central axis of the arc groove 31 and the central axis of the retaining ring 32 are on the same straight line, and the arc groove 31 and the central axis of the sleeve 21 are arranged parallel to each other, so that when the retaining ring 32 is clamped into the inner cavity of the arc groove 31, it can be staggered with the sleeve 21, thereby being able to play a positioning role for the drive component 2, thereby avoiding the phenomenon of random sliding when the drive component 2 is released.

[0032] Among them, the inner and outer diameters of the sliding sleeve 21 and the retaining ring 32 are the same, and the inner diameter of the arc groove 31 is the same as the inner diameter of the retaining ring 32, so that when the retaining ring 32 is separated from the inner cavity of the arc groove 31, it can be aligned with the sliding sleeve 21, and then the driving component 2 can be unlocked, that is, the driving component 2 can be slid at will to ensure that the operator can perform the snare and cutting operation of the lesion.

[0033] Among them, the pressing piece 33 includes a pressing rod 331 that is movably inserted into one of the movable rings 22, one end of the pressing rod 331 extends to the inner cavity of the through groove 34 and is fixedly connected to the outer surface of the retaining ring 32, and the other end of the pressing rod 331 is fixedly connected to a pressing block 332, which is located in the inner cavity of the movable ring 22. The pressing piece 33 facilitates the operator to press the retaining ring 32 while moving the driving assembly 2.

[0034] One of the movable rings 22 is provided with a through hole for the pressure rod 331 to pass through, and the inner wall surface of the through hole is slidably connected to the surface of the pressure rod 331 .

[0035] Among them, a spring 333 is sleeved on the surface of the compression rod 331. The two ends of the spring 333 are respectively fixedly connected to one of the movable rings 22 and the pressing block 332. Through the elastic force of the spring 333, the snap ring 32 can be automatically reset.

[0036] The working principle of the present utility model is as follows: When the operator needs to move the driving component 2, place the finger in the inner cavity of the movable ring 22. At the same time, press the pressing block 332 with the finger, so that the pressing block 332 drives the compression rod 331 and the snap ring 32 to move synchronously. The spring 333 is compressed under force, and the snap ring 32 slides in the inner cavity of the through groove 34 until the snap ring 32 moves to the maximum limit, and the snap ring 32 disengages from the inner cavity of the corresponding arc groove 31, that is, the snap ring 32 is aligned with the sliding sleeve 21. At this time, the movable ring 22 can be used to drive the sliding sleeve 21 to move upward, so that the sliding sleeve 21 slides on the surface of the handle 11 and drives the metal belt 13 to extend out of the flexible sheath 12 and be in an open state. Release the pressing block 332, and through the elastic force of the spring 333, the snap ring 32 is reset and snapped into the inner cavity of the arc groove 31 at the corresponding position, so that the metal belt 13 is stably maintained in the open state. Use the metal belt 13 to enclose the target lesion, and then place the finger in the inner cavity of the movable ring 22 again and press the pressing block 332 to unlock the driving component 2 and move the driving component 2 downward, so that the target lesion can be removed by strangulation with the metal belt 13, realizing the polyp resection operation.

[0037] Parts not involved in the present utility model are the same as or can be implemented by the prior art. Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A novel polypectomy device, characterized in that: include: A polypectomy component (1) is provided with a driving component (2) on its surface for driving a local part of the polypectomy component (1) to extend or retract, and a positioning component (3) is provided between the driving component (2) and the polypectomy component (1) for preventing the driving component (2) from sliding randomly; The positioning assembly (3) comprises a plurality of arc-shaped grooves (31) equidistantly arranged along the axial direction of the polypectomy assembly (1), the driving assembly (2) is movably provided with a clamping ring (32) capable of clamping into the inner cavity of the corresponding arc-shaped groove (31), and the driving assembly (2) is also provided with a pressing member (33) for facilitating the pressing operation of the clamping ring (32).

2. A novel polypectomy device according to claim 1, characterized in that: The polypectomy assembly (1) comprises a handle (11), the top of the handle (11) is connected to a flexible sheath (12), a metal belt (13) is passed through the handle (11) and the flexible sheath (12), and the top of the metal belt (13) forms a snare head for snare and cutting lesions.

3. A novel polypectomy device according to claim 2, characterized in that: A fixing ring (14) is fixedly connected to the bottom end of the handle (11).

4. A novel polypectomy device according to claim 2, characterized in that: The driving assembly (2) comprises a sleeve (21) slidably mounted on the surface of the handle (11); two symmetrical movable rings (22) are fixedly connected to the surface of the sleeve (21); the bottom end of the metal belt (13) is fixed to the sleeve (21) by riveting and is electrically connected to the electrode column on the sleeve (21).

5. A novel polypectomy device according to claim 4, characterized in that: A plurality of arc-shaped grooves (31) are equidistantly arranged on the surface of the handle (11) in the upper and lower parts, the clamping ring (32) is movably arranged on the sliding sleeve (21), the pressing member (33) is arranged on one of the movable rings (22), and a through groove (34) for the clamping ring (32) to move horizontally is arranged on the sliding sleeve (21).

6. A novel polypectomy device according to claim 5, characterized in that: The central axes of the handle (11) and the sliding sleeve (21) are in the same straight line, the central axes of the arc groove (31) and the clamping ring (32) are in the same straight line, and the central axes of the arc groove (31) and the sliding sleeve (21) are arranged parallel to each other.

7. A novel polypectomy device according to claim 6, characterized in that: The inner and outer diameters of the sliding sleeve (21) and the snap ring (32) are the same, and the inner diameter of the arc-shaped groove (31) is the same as the inner diameter of the snap ring (32).

8. A novel polypectomy device according to claim 4, characterized in that: The pressing member (33) comprises a pressing rod (331) movably penetrating one of the movable rings (22); one end of the pressing rod (331) extends to the inner cavity of the through groove (34) and is fixedly connected to the outer surface of the clamping ring (32); the other end of the pressing rod (331) is fixedly connected to a pressing block (332), and the pressing block (332) is located in the inner cavity of the movable ring (22).

9. A novel polypectomy device according to claim 8, characterized in that: One of the movable rings (22) is provided with a through hole for the pressure rod (331) to pass through, and the inner wall surface of the through hole is slidably connected to the surface of the pressure rod (331).

10. The novel polypectomy device according to claim 8, characterized in that: A spring (333) is sleeved on the surface of the pressure rod (331), and two ends of the spring (333) are respectively fixedly connected to one of the movable rings (22) and the pressure block (332).

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