Cold and hot dual-purpose snare device
By designing a dual-purpose snare device for hot and cold, the device replacement problem caused by different sizes and shapes of the lesion tissue is solved, and the convenience of hot and cold switching is achieved, which improves surgical efficiency and reduces patient pain.
Patent Information
- Application Number
- CN202422112993.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-08-29
AI Technical Summary
In the prior art, different sizes and shapes of lesion tissues lead to the need to replace snares of different shapes, and when lesion tissues are bleeding, they need to switch to the hot mode, which wastes time and reduces the work efficiency of the doctor.
A dual-purpose snail device for hot and cold is designed, including a ferrule, rope body, sheath tube, clamp handle and clamp ring. The ferrule can be deformed and expanded, and it can be switched hot and cold through the interface to the external power supply. The ferrule part is strongly stable and supports hot and cold switching without changing the equipment.
It improves the convenience and efficiency of the operation, reduces the operation time and patient pain, and enhances the operation convenience of the doctor.
Smart Images
Figure CN223158428U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, in particular to a cold and hot dual-purpose snare device. Background Art
[0002] Snares are mostly used in EMR surgeries. A very common medical treatment method at present is to remove the diseased polyp tissue by snaring under an endoscope. Specifically, first, the endoscope is inserted into the human body, the diseased position is located from the image, the head end of the snare is used to enclose the diseased tissue, and the diseased tissue is removed by using cold cutting or hot cutting through high-frequency current. In the prior art, due to the different sizes and shapes of the diseased tissues, different-shaped head ends need to be selected. Under normal circumstances, the cold cutting scheme is mostly adopted. However, if the diseased tissue is prone to bleeding, an electric snare that can pass high-frequency current needs to be used for hot cutting. The electric snare has an electrocoagulation hemostasis effect while cutting, which is convenient for the doctor's subsequent operations and reduces the patient's pain. However, the switching between the two snares is time-consuming, so the temporary replacement of the instrument reduces the doctor's work efficiency. Content of the Utility Model
[0003] In view of this, to solve the above problems, the purpose of the utility model is to provide a cold and hot dual-purpose snare device, including:
[0004] A snare, one end of the snare has a bent protrusion;
[0005] A rope body, one end of the rope body is connected to the other end of the snare;
[0006] A sheath tube, the sheath tube is sleeved on the rope body, and one end of the rope body is arranged close to one end of the sheath tube;
[0007] A pair of forceps handles, one end of the pair of forceps handles is connected to the other end of the sheath tube, and a circular ring is arranged at the other end of the pair of forceps handles;
[0008] A pair of forceps rings, the pair of forceps rings are slidably arranged on the pair of forceps handles, the pair of forceps rings are connected to the other end of the rope body, and two round holes are respectively formed on both sides of the pair of forceps rings;
[0009] Wherein, the snare includes two arc-shaped parts, one ends of the two arc-shaped parts are connected to each other, and the other ends of the two arc-shaped parts are respectively connected to the rope body; the arc-shaped part includes: a first metal wire and a plurality of second metal wires, one end of the first metal wire is connected to the rope body, a plurality of the second metal wires are twisted with one end of the first metal wire, and the length of the second metal wire is less than the length of the first metal wire.
[0010] In another preferred embodiment, the ferrule is deformably in a contracted state or an expanded state. When the ferrule is in the contracted state, the ferrule is inside the sheath tube. When the ferrule is in the expanded state, the ferrule is outside the sheath tube.
[0011] In another preferred embodiment, when the ferrule is in the expanded state, the outer contour from both ends of the ferrule to the middle of the ferrule gradually increases.
[0012] In another preferred embodiment, when the ferrule is in the expanded state, the outer contour from both ends of the ferrule to the middle of the ferrule gradually increases.
[0013] In another preferred embodiment, an interface is provided at the lower part of the clamp ring. The interface is electrically connected to the rope body and is used to connect to an external power supply.
[0014] In another preferred embodiment, a through hole is provided on the clamp ring, and the clamp handle is movably arranged through the through hole.
[0015] Due to the adoption of the above technical solutions, the positive effects of the present utility model compared with the prior art are as follows:
[0016] By applying the present utility model, a cold and hot dual-purpose snare device is provided. When a patient has a large amount of bleeding during the cold cutting process of the operation, the doctor can directly switch the device to the energized hot cutting state, and the stability of the ferrule part is relatively strong, ensuring the continuation of the operation, thereby improving the convenience of the doctor's clinical operation, reducing the operation time, reducing the patient's pain, and improving the doctor's work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is the overall structure diagram of a cold and hot dual-purpose snare device of the present utility model;
[0018] Figure 2 is the cross-sectional structure diagram of the ferrule of a cold and hot dual-purpose snare device of the present utility model.
[0019] In the drawings: 1, ferrule; 2, rope body; 3, clamp ring; 4, sheath tube; 5, clamp handle; 6, interface; 7, first metal wire; 8, second metal wire. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are some of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0021] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "lateral", "vertical", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model, rather than indicating or implying that the device or component referred to must have a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.
[0022] It should be specifically noted that the "horizontal" and "vertical" in the present utility model are used to illustrate the approximate positional relationship, rather than the strict "horizontal plane" or "vertical plane".
[0023] As Figures 1 to 2 shown, there is shown a cold and hot dual-purpose snare device of a preferred embodiment, including: a snare 1, one end of the snare 1 having a bent protrusion; a rope body 2, one end of the rope body 2 being connected to the other end of the snare 1; a sheath tube 4, the sheath tube 4 being sleeved on the rope body 2, and one end of the rope body 2 being disposed near one end of the sheath tube 4; a pair of forceps handles 5, one end of the pair of forceps handles 5 being connected to the other end of the sheath tube 4, and a circular ring being disposed at the other end of the pair of forceps handles 5; a pair of forceps rings 3, the pair of forceps rings 3 being slidably disposed on the pair of forceps handles 5, the pair of forceps rings 3 being connected to the other end of the rope body 2, and two circular holes being respectively formed on both sides of the pair of forceps rings 3; wherein, the snare 1 includes two arc portions, one ends of the two arc portions being connected to each other, and the other ends of the two arc portions being respectively connected to the rope body 2; the arc portion includes: a first metal wire 7 and a plurality of second metal wires 8, one end of the first metal wire 7 being connected to the rope body 2, the plurality of second metal wires 8 being twisted with one end of the first metal wire 7, and the length of the second metal wire 8 being less than the length of the first metal wire 7.
[0024] Further, as a preferred embodiment, the plurality of second metal wires 8 are twisted around the outer periphery of the first metal wire 7.
[0025] Further, as a preferred embodiment, the rope body 2 is preferably made of a steel wire rope.
[0026] Further, as a preferred embodiment, the snare 1 can be deformed to be in a contracted state or an expanded state. When the snare 1 is in the contracted state, the snare 1 is inside the sheath tube 4. When the snare 1 is in the expanded state, the snare 1 is outside the sheath tube 4.
[0027] Further, as a preferred embodiment, when the ferrule 1 is in the expanded state, the outer contours at both ends of the ferrule 1 to the outer contour of the middle of the ferrule 1 are gradually increasing.
[0028] Further, as a preferred embodiment, when the ferrule 1 is in the expanded state, its outer contour is approximately elliptical, and the major axis of the ellipse is coaxially arranged with the sheath 4.
[0029] Further, as a preferred embodiment, the second wire 8 is arranged at a portion of the first wire 7 close to the sheath.
[0030] Further, as a preferred embodiment, at the portion of the first wire 7 not twisted by the second wire 8, its overall cross-section is smaller, so that it has a good effect in cold cutting; at the twisted portion of the first wire 7 and the second wire 8, its overall cross-section is larger and it is not easily deformed during energized hot cutting.
[0031] Further, as a preferred embodiment, the inside of the sheath 4 is hollow, the rope body 2 is movably inserted into the inside of the sheath 4, and the other end of the rope body 2 passes through the sheath 4.
[0032] Furthermore, the sheath 4 protects the internal rope body 2 and at the same time ensures the smooth conduction of the rope body 2 in the endoscope forceps channel.
[0033] Further, as a preferred embodiment, the sheath 4 is preferably made of a material that is not easily deformed, so as to provide sufficient support for removing diseases.
[0034] Further, as a preferred embodiment, an interface is provided at the lower part of the forceps ring 3, the interface is electrically connected to the rope body 2, and the interface is used to connect to an external power supply.
[0035] Furthermore, when the snare needs hot cutting operation, it can be connected to an external power supply through the wiring port; the external power supply is connected to the wiring port, the wiring port is electrically connected to the rope body 2 through a conductive component, the rope body 2 is connected to the ferrule 1, and a conductive loop is formed.
[0036] Further, as a preferred embodiment, a through hole is provided on the forceps ring 3, and the forceps handle 5 is movably inserted through the through hole.
[0037] The above are only preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention accordingly.
[0038] The present invention also has the following implementation manners on the above basis:
[0039] The specific operation steps of the hot and cold dual-use snare device of the present invention:
[0040] An operator holds the sheath 4 of the device with one hand, passes the fingers of the other hand through the ring of the forceps handle 5, clamps the forceps ring 3 with the index finger and middle finger, pulls the forceps ring 3 to close the loop 1 and retracts it into the sheath 4, and then inserts it into the endoscopic channel. Then, by pushing the sheath 4 forward, the loop 1 is sent to the human lesion through the endoscopic channel; by observing the endoscopic image, the snare is moved to align it with the suspicious lesion. The operator holds the ring of the forceps handle 5 with the thumb, and applies forward force by clamping the forceps ring 3 with the index finger and middle finger. The forceps ring 3 pushes the cord body 2 to move, and the loop 1 is pushed out of the sheath 4 and expands; through endoscopic observation, the bent protrusion of the loop 1 is used to enclose the lesion to be excised. The operator holds the ring of the forceps handle 5 with the thumb, and applies backward force by clamping the forceps ring 3 with the index finger and middle finger. The forceps ring 3 pulls the cord body 2 to move, and the loop 1 is pulled into the sheath 4 and contracts to close, cutting the tissue (if there is more bleeding during the process, it is necessary to switch to electrothermal cutting); subsequently, the operator's thumb still holds the ring of the forceps handle 5, and the index finger and middle finger clamp the forceps ring 3 to maintain the backward force, retracting the loop 1 into the sheath 4, and the other hand holds the sheath 4 and pulls it backward to withdraw the part of the entire snare inserted in the endoscopic channel. Thus, the excision work of this cold and hot dual-purpose snare device is completed.
[0041] The above are only the preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention. For those skilled in the art, it should be realized that any equivalent replacements and obvious changes made by using the description and illustrations of the present invention should be included in the protection scope of the present invention.
Claims
1. A cold and hot dual-use snare device, characterized in that, Comprising: A ferrule, one end of the ferrule has a bent protrusion; A cord body, one end of the cord body is connected to the other end of the ferrule; A sheath tube, the sheath tube is sleeved on the cord body, and one end of the cord body is arranged close to one end of the sheath tube; A pair of forceps handles, one end of the pair of forceps handles is connected to the other end of the sheath tube, and a circular ring is arranged at the other end of the pair of forceps handles; A pair of forceps rings, the pair of forceps rings are slidably arranged on the pair of forceps handles, the pair of forceps rings are connected to the other end of the cord body, and two circular holes are respectively formed on both sides of the pair of forceps rings; Wherein, the ferrule includes two arc-shaped parts, one ends of the two arc-shaped parts are connected to each other, and the other ends of the two arc-shaped parts are respectively connected to the cord body; the arc-shaped part includes: a first metal wire and a plurality of second metal wires, one end of the first metal wire is connected to the cord body, and the plurality of second metal wires are twisted with one end of the first metal wire, and the length of the second metal wire is less than the length of the first metal wire.
2. The cold and hot dual-purpose snare device according to claim 1, characterized in that, The ferrule can be deformed to be in a contracted state or an expanded state. When the ferrule is in the contracted state, the ferrule is inside the sheath tube. When the ferrule is in the expanded state, the ferrule is outside the sheath tube.
3. The cold and hot dual-purpose snare device according to claim 2, characterized in that, When the ferrule is in the expanded state, the outer contours from both ends of the ferrule to the middle of the ferrule are all gradually increasing.
4. The cold and hot dual-purpose snare device according to claim 1, characterized in that, The inside of the sheath tube is hollow, the cord body can be movably extended into the inside of the sheath tube, and the other end of the cord body passes through the sheath tube.
5. The cold and hot dual-purpose snare device according to claim 1, characterized in that, A connector is formed at the lower part of the pair of forceps rings, the connector is electrically connected to the cord body, and the connector is used to connect to an external power supply.
6. The cold and hot dual-purpose snare device according to claim 1, characterized in that, A through hole is formed on the pair of forceps rings, and the pair of forceps handles are movably arranged through the through hole.