Electric control snare
Through the electromagnet principle and pretension spring adjustment of the electronically controlled snail, the problem of inconvenient operation of the manual snail is solved, and the stable control and wide adaptation of the snail shrinkage force are achieved, thereby reducing operator fatigue.
Patent Information
- Application Number
- CN202421805600.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-07-26
AI Technical Summary
The existing snares rely on manual control, and the operator has high experience requirements, which can easily cause too tight or too loose junctions, and inconvenient operation, resulting in hand fatigue.
The electronically controlled snail is used to realize the expansion and contraction of the mounting plate using the principle of electromagnet. The expansion and contraction of the synthetic wire is adjusted by the energized coil and the pre-tension spring. Combined with the adjustable current size and the position of the mounting plate, the stable shrinkage of the ferrule and adaptation to different scenarios.
It improves the lightness of the snare, the ferrule shrinkage force is stable and reliable, reduces operator fatigue, and has a wider adaptation range.
Smart Images
Figure CN223081729U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical devices and relates to an electric control snare device. Background Art
[0002] A snare device is a medical device for tissue ligation, mainly used for ligating blood vessels, polyps or other pipeline structures; it includes a nylon extension rod, a retractable snare located at the front end of the nylon extension rod, and a snare contraction control structure located at the rear end of the nylon rod. In the prior art, the snare contraction control structure is generally a telescopic member controlled by fingers, namely a sleeve and a sliding rod. The relative movement of the sleeve and the sliding rod realizes the tightening and loosening of the synthetic line forming the snare. At present, the manually controlled snare device depends on the operator's experience during the operation to make the force of the snare ligation on the tissue appropriate. According to different ligation scenarios, the operator needs to have a relatively clear judgment, otherwise it will cause over-tightening or over-loosening of the ligation. In addition, operating the snare device is likely to cause hand fatigue and discomfort, and the operation is inconvenient. Summary of the Utility Model
[0003] The purpose of the utility model is to provide an electric control snare device for the above problems existing in the prior art. The technical problem to be solved by the utility model is how to improve the usability of the snare device.
[0004] The purpose of the utility model can be achieved by the following technical solutions: an electric control snare device, characterized in that it includes a handle, a nylon rod and a synthetic line. A ferrous mounting plate is slidably connected along the length direction of the handle inside the handle. An armature is also fixedly arranged inside the handle. An energized coil is wound around the armature. A battery for supplying power to the energized coil is arranged inside the handle. Both free ends of the synthetic line are fixed on the mounting plate. The nylon rod is fixed on a mounting seat. The handle is threadedly connected with the mounting seat. Two through holes are formed inside the nylon rod. The synthetic line passes through the two through holes and forms a snare at the front end of the nylon rod. A pre-tightening spring is connected between the mounting plate and the mounting seat.
[0005] Further, a guiding inner sleeve is provided on the mounting seat, and a guiding outer sleeve sleeved and slidably connected on the guiding inner sleeve is provided on the mounting plate.
[0006] Further, a wearing ring is provided on the outer wall surface of the handle.
[0007] Further, the switch for controlling the energization and de-energization of the energized coil is arranged at the end of the handle far from the nylon rod; a gear switch capable of adjusting the magnitude of the energized current of the energized coil is arranged on the handle.
[0008] Using the principle of an electromagnet, the telescopic movement of the mounting plate within the handle is achieved, thereby realizing the telescopic movement of the two free ends of the synthetic wire. When the synthetic wire is pulled upward, the ferrule shrinks, and when the pre-tension spring returns to its original position, the ferrule expands. Additionally, to adapt to different scenarios, ferrules of different sizes are selected, and the position of the mounting plate is adjustable. By rotating the handle, the position between the handle and the mounting base is adjusted, thereby realizing the adjustment of the pre-tension force of the pre-tension spring. The adjustment of the pre-tension force of the pre-tension spring can, on the one hand, correct the change in the pre-tension force of the pre-tension spring as the usage frequency increases, and on the other hand, adjust the initial size of the ferrule. By adjusting the magnitude of the current, the contraction force of the ferrule can also be adjusted.
[0009] Therefore, compared with the prior art, the above-mentioned snare has good buffering for the contraction force of the ferrule during ligation, is more stable and reliable than manually controlling the ligation contraction force, has lower requirements for the operator, and can be controlled by simply holding the switch, which is not easy to cause fatigue. Finally, according to the usage scenario, the initial size and contraction force of the ferrule can be adjusted to make it more adaptable. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 is a schematic structural diagram of the present electric control snare.
[0011] Figure 2 is a cross-sectional view of the handle.
[0012] In the figure, 1 is the handle; 2 is the nylon rod; 3 is the synthetic wire; 4 is the mounting plate; 5 is the armature; 6 is the battery; 7 is the ferrule; 8 is the pre-tension spring; 9 is the inner guide sleeve; 10 is the outer guide sleeve; 11 is the threading ring; 12 is the mounting base. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0013] The following are specific embodiments of the present invention in combination with the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.
[0014] As Figure 1 and Figure 2 shown in the electric control snare, which includes a handle 1, a nylon rod 2, and a synthetic wire 3. A ferrous mounting plate 4 is slidably connected along the length direction of the handle 1 within the handle 1. An armature 5 is also fixedly arranged within the handle 1, and an energized coil is wound around the armature 5. A battery 6 for supplying power to the energized coil is arranged within the handle 1. Both free ends of the synthetic wire 3 are fixed to the mounting plate 4. The nylon rod 2 is fixed to a mounting base 12. The handle 1 is threadedly connected to the mounting base 12, and this threaded fit is an interference fit, that is, a certain external force is required to achieve torsion, and there is good positioning stability after torsion. Two through holes are formed within the nylon rod 2, and the synthetic wire 3 passes through the two through holes and forms a ferrule 7 at the front end of the nylon rod 2. A pre-tension spring 8 is connected between the mounting plate 4 and the mounting base 12.
[0015] The mounting seat 12 is provided with a guide inner sleeve 9, and the mounting plate 4 is provided with a guide outer sleeve 10 which is sleeved and slidably connected to the guide inner sleeve 9. The guide inner sleeve 9 is mainly used for guiding between the mounting seat 12 and the mounting plate 4 to prevent the mounting plate 4 from moving out of position and getting stuck. In addition, the smooth sliding of the mounting plate 4 can better exert the buffering ability of the preload spring 8 on the contraction force of the ferrule 7.
[0016] The outer wall of the handle 1 is provided with a hand ring 11. When working, the palm passes through the hand ring 11 to hold the handle 1, which is reliable and easy to hold.
[0017] The switch for controlling the on and off of the energized coil is arranged at the end of the handle 1 away from the nylon rod 2; the handle 1 is provided with a gear switch capable of adjusting the current of the energized coil. There are many ways to control the current and on and off in the prior art, which will not be elaborated here.
[0018] By using the principle of electromagnet, the installation plate 4 is extended and retracted in the handle 1, and then the two free ends of the synthetic line 3 are extended and retracted. When the synthetic line 3 is pulled up, the ferrule 7 is reduced, and when the preload spring 8 is returned, the ferrule 7 is increased. In addition, in order to adapt to different scenes, ferrules 7 of different sizes are selected. The position of the installation plate 4 is adjustable. By rotating the handle 1, the position between the handle 1 and the mounting seat 12 is adjusted, and then the preload force of the preload spring 8 is adjusted. The adjustment of the preload force of the preload spring 8 can correct the change of the preload force of the preload spring 8 with the increase of the frequency of use, and can adjust the initial size of the ferrule 7. By adjusting the current, the contraction force of the snare can also be adjusted.
[0019] Therefore, compared with the prior art, the above-mentioned snare has a good buffering effect on the force of the contraction of the loop 7 for tying, which is more stable and reliable than the manual control of the tying contraction force, and has lower requirements for the operator. In addition, the switch can be controlled in the holding state, which is not easy to cause fatigue. Finally, according to the usage scenario, the initial size and contraction force of the loop 7 can be adjusted to make it have a wider range of adaptability.
[0020] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.
Claims
1. An electrically controlled snare, characterized in that, It includes a handle (1), a nylon rod (2) and a synthetic wire (3). An iron mounting plate (4) is slidably connected along the length direction of the handle (1) inside the handle (1). An armature block (5) is also fixedly arranged inside the handle (1). An energized coil is wound around the armature block (5). A battery (6) for supplying power to the energized coil is arranged inside the handle (1). Both free ends of the synthetic wire (3) are fixed on the mounting plate (4). The nylon rod (2) is fixed on a mounting seat (12). The handle (1) is threadedly connected to the mounting seat (12). Two through holes are formed inside the nylon rod (2). The synthetic wire (3) passes through the two through holes and forms a loop (7) at the front end of the nylon rod (2). A pre-tightening spring (8) is connected between the mounting plate (4) and the mounting seat (12).
2. The electric control snare according to claim 1, wherein A guiding inner sleeve (9) is provided on the mounting seat (12). A guiding outer sleeve (10) which is sleeved and slidably connected on the guiding inner sleeve (9) is provided on the mounting plate (4).
3. The electrified snare according to claim 1 or 2, characterized in that, A wearing ring (11) is provided on the outer wall surface of the handle (1).
4. The electric control snare according to claim 1 or 2, characterized in that, The switch for controlling the energization and de-energization of the energized coil is arranged at the end of the handle (1) far from the nylon rod (2). A gear switch capable of adjusting the magnitude of the energizing current of the energized coil is arranged on the handle (1).