Multifunctional electric snare

Abstract

The utility model relates to a multifunctional electric snare which comprises an outer tube, and a liquid injection cavity channel and a snare working cavity channel are formed in the outer tube. An inhaul cable is arranged in the snare working cavity in a penetrating mode, the front end of the inhaul cable is connected with a ferrule, and the rear end of the inhaul cable is connected with a handle assembly. The nozzle is fixedly arranged at the front end of the liquid injection cavity channel, a plurality of spiral channels are formed between the nozzle and the liquid injection cavity channel, and the liquid injection cavity channel is communicated with the outside through the spiral channels; and the liquid pushing device is connected with the rear end of the liquid injection cavity channel through a connecting pipe. According to the multifunctional electric snare, rugosa liquid or indigo carmine solution can be sprayed into mist through the nozzle for dyeing, after the lesion range is determined through dyeing, the instrument does not need to be taken out, polyp excision can be directly carried out through the snare, and the operation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a multifunctional electric snare. Background Art

[0002] A snare is required in EMR surgery. The snare is an instrument that uses a nylon rod to tighten a sliding knot previously tied with absorbable or synthetic thread to ligate blood vessels, polyps or other tubular structures. It is easy to operate and has been used in a variety of laparoscopic abdominal surgeries.

[0003] The current snare only has a cutting function. When spraying is required during surgery, another instrument spray tube is required. The two instruments take turns entering and exiting the clamp channel hole, which increases the operation time and reduces efficiency.

[0004] In summary, the current snare has a single function, which is only a cutting function and lacks a spraying function, thereby increasing the operation time and reducing the efficiency. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art, provide a multifunctional electric snare, and solve the technical problem that the current electric snare has a single function and lacks a spraying function, which leads to increased operation time and reduced operation efficiency.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A multifunctional electric snare is provided, comprising:

[0008] An outer tube, wherein a liquid injection channel and a snare working channel are provided in the outer tube;

[0009] A cable is inserted into the working cavity of the snare, the front end of the cable is connected to the ferrule, and the rear end of the cable is connected to the handle assembly;

[0010] A nozzle, wherein the nozzle is fixedly arranged at the front end of the liquid injection cavity, and a plurality of spiral channels are formed between the nozzle and the liquid injection cavity, and the liquid injection cavity is connected to the outside through each spiral channel;

[0011] A liquid pusher is connected to the rear end of the liquid injection cavity through a connecting tube.

[0012] Furthermore, the nozzle comprises

[0013] A column, wherein a plurality of spiral grooves are formed on the outer wall of the column, and each spiral groove is formed along the length direction of the column;

[0014] The column has an interference fit in the liquid injection cavity;

[0015] A spiral channel is formed between each spiral groove and the liquid injection cavity.

[0016] Further, guiding inclinations are formed at both ends of the cylinder.

[0017] Further, the thread angle α in the spiral groove is 65°.

[0018] Further, each spiral groove is a right-handed thread.

[0019] Further, the front end of the liquid injector is connected to a liquid injection valve, and the liquid injection valve is communicated with a liquid injection cavity through a connecting pipe.

[0020] The beneficial effects of the present utility model are as follows:

[0021] The multifunctional electric snare of the present utility model can spray Lugol's solution or indigo carmine solution in a mist through a nozzle for staining. After the lesion range is determined by staining, the device does not need to be taken out, and polyps can be directly removed through the snare, improving the surgical efficiency. Description of the Drawings

[0022] The present utility model will be further described below with reference to the drawings.

[0023] Figure 1 is a schematic diagram of the multifunctional electric snare of the present utility model;

[0024] Figure 2 is a partial cross-sectional view of the outer tube;

[0025] Figure 3 is a partial view of the outer tube;

[0026] Figure 4 is a side view of the nozzle;

[0027] Figure 5 is a half-sectional view of the nozzle;

[0028] Figure 6 is a three-dimensional view of the nozzle;

[0029] Among them, 1. Outer tube, 11. Liquid injection cavity, 12. Snare working cavity;

[0030] 2. Nozzle, 21. Cylinder, 22. Spiral groove, 23. Guiding inclination;

[0031] 3. Liquid injector, 31. Liquid injection valve;

[0032] 41. Loop, 42. Cable, 43. Handle rod, 44. Handle slip ring. Detailed Embodiments

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. 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.

[0034] This application provides a multifunctional electric snare, which will be described in detail below. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments of this application. And in the following embodiments, each embodiment has its own emphasis. For parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0035] To solve the technical problem in the prior art that the electric snare has a single function and lacks a spraying function, resulting in an increase in the operation time and a decrease in the operation efficiency, an embodiment of this application provides a multifunctional electric snare. The following will be elaborated in detail.

[0036] As Figures 1 to 6 shown, a multifunctional electric snare includes

[0037] an outer tube 1, in which a liquid injection cavity 11 and a snare working cavity 12 are formed;

[0038] a cable 42 is threaded through the snare working cavity 12, the front end of the cable 42 is connected to a snare 41, and the rear end of the cable 42 is connected to a handle assembly;

[0039] a nozzle 2, which is fixedly arranged at the front end of the liquid injection cavity 11, and a plurality of spiral channels are formed between the nozzle 2 and the liquid injection cavity 11, and the liquid injection cavity 11 communicates with the outside through each spiral channel;

[0040] a liquid injector 3, which is connected to the rear end of the liquid injection cavity 11 through a connecting pipe.

[0041] Specifically, as an alternative implementation in this embodiment, as Figures 2 to 6 shown, the nozzle 2 includes

[0042] a cylinder 21, on the outer wall of which a plurality of spiral grooves 22 are formed, and each spiral groove 22 is formed along the length direction of the cylinder 21;

[0043] the cylinder 21 is in interference fit in the liquid injection cavity 11;

[0044] each spiral groove 22 and the liquid injection cavity 11 form a spiral channel.

[0045] Specifically, as an alternative implementation in this embodiment, as Figures 4 to 6 shown, guiding inclinations 23 are formed at both ends of the cylinder 21. The inclination design ensures that the inner cavity of the cavity is not damaged when assembled with the double lumen tube.

[0046] Specifically, as an alternative implementation in this embodiment, as Figure 5 shown, the thread angle α in the spiral groove 22 is 65°.

[0047] In this embodiment, each spiral groove 22 is a right-handed thread. The 65° thread angle design ensures that the liquid is sprayed in a fan-shaped area when sprayed.

[0048] The right-handed thread design only requires the pusher 3 to be gently pushed to form a uniform mist spraying effect, so that the ejected liquid is in a mist shape.

[0049] In this embodiment, the outer diameter of the mist nozzle 2 is 0.9 mm, and an interference fit is formed with the inner diameter of the liquid injection cavity 11, so that it can be firmly fixed in the cavity.

[0050] In this embodiment, as Figure 1 shown, the front end of the pusher 3 is connected to the liquid injection valve 31, and the liquid injection valve 31 is communicated with the liquid injection cavity 11 through a connecting pipe.

[0051] In this embodiment, the number of spiral grooves 22 is three.

[0052] In this embodiment, as Figure 1 shown, the handle assembly includes a handle rod 43 and a handle slip ring 44. The handle slip ring 44 is connected to the rear end of the cable 42. The handle rod 43 is fixedly connected to the outer tube 1. A motor plug is provided on the handle slip ring 44 for supplying power to the ferrule 41.

[0053] The multifunctional electric snare of the present utility model is used for multiple polyp diseases in EMR surgery. The product has a double cavity structure, which is divided into a liquid injection cavity 11 and a snare working cavity 12. A mist nozzle 2 is installed at the working end face of the liquid injection cavity 11. Just unscrew the liquid injection valve 31 and gently push the pusher 3, and Lugol's solution or indigo carmine solution can be sprayed out in a mist shape for staining. After the staining determines the lesion range, close the liquid injection valve 31; observe the target part through the endoscope, extend the ferrule 41 through the handle slip ring 44, place the lesion at the center of the ferrule 41, place the opening of the snare on the mucosa and press it tightly, slowly tighten the handle slip ring 44 to avoid slippage of the lesion part, lift the ferrule 41 to slightly lift the lesion, observe the lesion, the size of the snare content is appropriate, after connecting the high-frequency electric output device, excise the tissue to be snared, and after the operation, retract the head of the ferrule 41 into the working cavity.

[0054] For multiple polyps, the use of the multi-functional electric snare of the present utility model can eliminate the operation of frequently replacing surgical instruments. With this instrument, the EMR surgery can be effectively and quickly completed.

[0055] Each device (components without specific structures described) selected in this application is a general standard component or a component known to those skilled in the art. Its structure and principle can be known to those skilled in the art through technical manuals or by conventional experimental methods.

[0056] In the description of the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0057] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0058] In several embodiments provided in this application, it should be understood that the disclosed system, device, and method can be implemented in other ways. The device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For another example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed mutual coupling or direct coupling or communication connection can be through some communication interfaces. The indirect coupling or communication connection of the device or unit can be in an electrical, mechanical, or other forms.

[0059] The units described as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0060] In addition, in each embodiment of the present utility model, each functional unit may be integrated into one processing unit, may exist physically alone for each unit, or two or more units may be integrated into one unit.

[0061] Taking the above-mentioned ideal embodiment based on the present utility model as an inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A multifunctional electric snare, characterized in that: include An outer tube (1), wherein a liquid injection cavity (11) and a snare working cavity (12) are provided in the outer tube (1); A pull cable (42) is inserted into the snare working cavity (12), the front end of the pull cable (42) is connected to the ferrule (41), and the rear end of the pull cable (42) is connected to the handle assembly; A nozzle (2), the nozzle (2) being fixedly arranged at the front end of the liquid injection cavity (11), a plurality of spiral channels being formed between the nozzle (2) and the liquid injection cavity (11), and the liquid injection cavity (11) being connected to the outside through each spiral channel; A liquid pusher (3) is connected to the rear end of the liquid injection cavity (11) via a connecting pipe.

2. The multifunctional electric snare according to claim 1, characterized in that: The nozzle (2) comprises A column (21), wherein the outer wall of the column (21) is provided with a plurality of spiral grooves (22), and each spiral groove (22) is provided along the length direction of the column (21); The column (21) has an interference fit in the liquid injection cavity (11); A spiral channel is formed between each spiral groove (22) and the liquid injection cavity (11).

3. The multifunctional electric snare according to claim 2, characterized in that: The two ends of the column (21) form a guide inclination angle (23).

4. The multifunctional electric snare according to claim 2, characterized in that: The thread angle α in the spiral groove (22) is 65°.

5. The multifunctional electric snare according to claim 2, characterized in that: Each spiral groove (22) is a right-hand thread.

6. The multifunctional electric snare according to claim 2, characterized in that: The front end of the liquid pusher (3) is connected to a liquid injection valve (31), and the liquid injection valve (31) is connected to the liquid injection cavity (11) via a connecting pipe.

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