Switching device suitable for high-frequency instrument and high-frequency instrument

Abstract

The switching device is installed in a handle of the high-frequency instrument and comprises a liquid injection connector used for transmitting liquid to the head portion of the high-frequency instrument and an electrode interface capable of transmitting current to the head portion. At least one channel penetrating through the switching device is arranged in the switching device, one side of the channel is communicated with the liquid injection connector, the other side of the channel is connected with a catheter connected to the head, and the electrode connector is arranged on the switching device and can transmit current to the head through the catheter. The liquid injection connector and the electrode interface are integrated on the switching device, so that the structure is simpler, the cost is saved, meanwhile, the electrode interface is arranged on the switching device in a threaded connection mode, the loosening phenomenon is reduced, and the connection reliability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to an adapter device suitable for high-frequency instruments and a high-frequency instrument. Background Art

[0002] Endoscopic submucosal dissection (ESD) is an endoscopic minimally invasive technique that uses high-frequency instruments to perform submucosal dissection on lesions larger than 2 cm. High-frequency cutting knives have been widely used in endoscopic treatment for mucosal dissection. Currently, the tip of a high-frequency cutting knife has the functions of flushing and cutting and dissecting. Common high-frequency cutting knives are provided with a water injection joint and an electrode joint at the handle part. Most high-frequency cutting knives connect the electrode joint and the liquid injection joint to the catheter of the knife tip with two independent connectors. Its structure is relatively complex, the cost is relatively high, and the reliability of the connection between the electrode joint and the catheter is insufficient, and the problem of easy detachment is likely to occur. Summary of the Utility Model

[0003] In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides an adapter device suitable for high-frequency instruments and a high-frequency instrument, aiming to solve the problems of relatively complex liquid injection and electrode structures, relatively high costs, and insufficient reliability in the prior art of high-frequency instruments.

[0004] In order to solve the above technical problems, the utility model provides an adapter device suitable for high-frequency instruments, which is installed in the handle of the above-mentioned high-frequency instrument. The adapter device includes a liquid injection joint for transmitting liquid to the head of the high-frequency instrument and an electrode interface capable of transmitting current to the head; at least one channel penetrating the adapter device is provided in the adapter device. One side of the channel is communicated with the liquid injection joint, and the other side of the channel is connected to a catheter connected to the head; the electrode interface is arranged on the adapter device and can transmit current to the head through the catheter.

[0005] Further, the adapter device has conductivity. The electrode interface is a threaded interface recessed in the adapter device and is threadedly connected to the electrode head, and current is transmitted to the head through the catheter connected to the adapter device.

[0006] Further, the handle includes an upper shell and a lower shell. The upper shell and the lower shell are respectively arranged on opposite sides in the radial direction of the handle; the upper shell is provided with a liquid injection joint groove for installing the liquid injection joint; the lower shell is provided with an electrode interface groove, and the electrode head threadedly connected to the electrode interface is arranged in the electrode interface groove.

[0007] Furthermore, the upper shell and the lower shell of the handle are buckled together to form an internal hollow installation cavity, the adapter is fixedly arranged in the installation cavity, and a support portion capable of horizontal displacement of the handle is also penetrated in the installation cavity, and the adapter and the handle realize synchronous displacement on the support portion.

[0008] Furthermore, snap-fit ​​grooves corresponding to the upper shell and the lower shell of the handle are provided on both sides of the adapter to facilitate fixing the adapter in the installation cavity inside the handle, and the adapter and the handle are synchronously displaced on the support portion by pulling the handle.

[0009] Furthermore, a traction wire is provided in the channel on the other side of the channel of the adapter device, and when the handle is pulled, the traction wire is horizontally displaced along with the handle and moves horizontally in the catheter synchronously with the catheter.

[0010] Furthermore, a blocking portion is provided in the channel on the other side of the channel of the adapter device, and the blocking portion is used to limit the installation position of the catheter in the channel.

[0011] Furthermore, the liquid injection connector and the electrode interface are spaced apart and arranged on the adapter.

[0012] Furthermore, the liquid injection joint is protrudingly arranged on the adapter device.

[0013] The utility model also provides a high-frequency instrument, comprising an operating part, a main body and a cutter head, wherein the operating part, the main body and the cutter head are connected in sequence, and the operating part is used to control the displacement of the cutter head in the main body and to supply power and water to the cutter head, and is characterized in that the operating part comprises a switching device suitable for high-frequency instruments as described above.

[0014] Beneficial effect: In the utility model, the liquid injection connector and the electrode interface are integrated on the adapter to make its structure simpler and save cost. At the same time, the electrode interface is arranged on the adapter by means of threaded connection, which reduces the loosening phenomenon and increases the connection reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the internal structure of the handle of the high-frequency instrument of the utility model.

[0016] Figure 2 It is a schematic diagram of the internal structure of the high-frequency device of the utility model.

[0017] Figure 3 It is a structural schematic diagram of the high-frequency device of the utility model.

[0018] Description of the reference numerals: 1 - handle; 11 - liquid injection joint; 12 - electrode interface; 13 - electrode head; 14 - channel; 15 - upper shell; 16 - lower shell; 17 - liquid injection joint groove; 18 - electrode interface groove; 19 - support portion; 20 - barrier portion; 2 - head; 3 - catheter; 4 - operation portion; 5 - main body portion; 6 - cutter head portion. Detailed implementation manners

[0019] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe the detailed implementation manners of the present utility model with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0020] As Figure 1 , Figure 2 , Figure 3 shown, this embodiment provides an adapter device applicable to high-frequency instruments. The adapter device is installed inside the handle 1 of the high-frequency instrument. In this embodiment, the adapter device as a whole has a columnar structure. A liquid injection joint 11 protruding from the adapter device is provided at the top of the columnar body. Liquid can be transmitted to the head 2 of the high-frequency instrument through the liquid injection joint 11. An electrode interface 12 is recessed inward at the bottom of the adapter device. In this embodiment, the electrode interface 12 is a threaded hole. The electrode interface 12 can be threadedly connected to an external electrode head 13. When power needs to be supplied, the electrode head 13 is connected to an external power supply, and current can be transmitted to the head 2 of the high-frequency instrument through the electrode interface 12.

[0021] Specifically, a channel 14 that penetrates the adapter device is provided inside the adapter device. In this example, the channel outlet on one side of the channel 14 is communicated with the liquid injection joint 11, and the inside of the channel on the other side of the channel 14 is communicated with a catheter 3 connected to the head 2 of the high-frequency instrument. The catheter 3 extends from the connection with the adapter device throughout the high-frequency instrument to the head 2 of the high-frequency instrument. The liquid entering from the liquid injection joint 11 is transmitted to the head 2 of the high-frequency instrument through the channel 14 and then via the catheter 3. The adapter device of this embodiment has conductivity, and the current connected from the electrode head 13 is transmitted to the head 2 of the high-frequency instrument through the adapter device and then via the catheter 3. Compared with the prior art, the structure of the adapter device of this embodiment is relatively simple, easy to install, without the need to separately arrange the liquid injection joint and the electrode interface at two parts of the handle, and without the need to add redundant fixing devices to fix it. The traditional fixing method fixes a connecting piece to the catheter, and the electrode connector is fixed to the connecting piece to achieve current transmission. The connecting piece and the catheter are prone to detachment. In this embodiment, the electrode head 13 and the catheter 3 do not directly contact but conduct current to the catheter 3 through the adapter device. This connection method is more stable and has higher reliability.

[0022] In this embodiment, a traction wire is provided in the catheter 3 connected to the channel 14 of the adapter device. The traction wire is fixedly connected to the catheter 3. When the handle is pulled, the traction wire moves horizontally with the handle and undergoes synchronous displacement in the catheter 3.

[0023] A blocking portion 20 is provided in the channel 14 of the adapter device to limit the installation position of the catheter 3 in the channel 14. The inner diameter of the blocking portion 20 is smaller than the inner diameter of the channel 14 to play a blocking and limiting role, without the need to separately provide fixing components to fix the position of the catheter 3.

[0024] As a preferred implementation manner, the liquid injection joint 11 and the electrode interface 12 are spaced apart on the adapter device. As an alternative, the electrode interface 12 can be provided at any position on the top or bottom of the adapter device, as long as it satisfies that the electrode interface 12 and the liquid injection joint 11 are both provided on the adapter device and are convenient for installing the electrode head 13.

[0025] In this embodiment, the handle includes an upper shell 15 and a lower shell 16. The upper shell 15 and the lower shell 16 are provided on opposite sides in the radial direction of the handle. A liquid injection joint groove 17 is provided on the upper shell 15, which is mainly used for installing the liquid injection joint 11. An annular boss is provided inside the liquid injection joint groove 17 near the liquid injection joint 11. An annular boss is also provided on the outside of the liquid injection joint 11 near the bottom of the adapter device. The annular boss of the liquid injection joint groove 17 is adhesively fixed in contact with the annular boss of the liquid injection joint 11; an electrode interface groove 18 is provided on the lower shell 16, and the electrode head 13 passes through the electrode interface groove 18 and is threadedly connected to the electrode interface 12.

[0026] Specifically, the upper shell 15 and the lower shell 16 of the handle are installed together by snapping together, and on this basis, an internal hollow installation cavity is formed, and the adapter is fixedly arranged in the installation cavity, and a snap-fitting piece for snapping with the adapter is arranged inside the upper shell 15 and the lower shell 16, and a snap-fitting groove matching the snap-fitting piece is provided on the adapter, so that the adapter is fixedly arranged in the handle.

[0027] On this basis, the support part 19 of the high-frequency instrument passes through the installation cavity formed by the upper shell 15 and the lower shell 16 of the handle to provide support for the handle. The handle can move horizontally on the support part 19, and while the handle moves horizontally, the adapter device is driven to produce synchronous displacement on the support part. When necessary, the handle is pulled to move on the support part 19, thereby driving the adapter device to move synchronously, and the catheter 3 arranged in the channel 14 will drive the head 2 of the high-frequency instrument to move as the adapter device moves.

[0028] like Figure 3 As shown, the utility model also provides a high-frequency instrument, including an operating part 4, a main body 5 and a cutter head 6, the operating part 4, the main body 5 and the cutter head 6 are connected in sequence, the operating part 4 is used to control the displacement of the cutter head 6 in the main body 5 and to supply power and water to the cutter head 6, and the operating part 4 includes a switching device suitable for high-frequency instruments as described above.

[0029] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A switching device suitable for a high-frequency device, installed in the handle of the high-frequency device, the switching device comprising a liquid injection connector for transmitting liquid to the head of the high-frequency device and an electrode interface capable of transmitting current to the head; The adapter device is provided with at least one channel penetrating the adapter device, one side of the channel is connected to the injection joint, and the other side of the channel is connected to the catheter connected to the head; The electrode interface is arranged on the adapter and can transmit electric current to the head through the catheter.

2. A switching device suitable for high-frequency equipment according to claim 1, characterized in that: The adapter is conductive, the electrode interface is a threaded interface that is concavely arranged on the adapter and is threadably connected to the electrode head, and current is transmitted to the head through the catheter connected to the adapter.

3. A switching device suitable for high-frequency equipment as claimed in claim 2, characterized in that: The handle comprises an upper shell and a lower shell, and the upper shell and the lower shell are respectively arranged on opposite sides of the handle in the radial direction; the upper shell is provided with a liquid injection joint groove, and the liquid injection joint groove is used to install the liquid injection joint; the lower shell is provided with an electrode interface groove, and the electrode head threadedly connected to the electrode interface is arranged in the electrode interface groove.

4. A switching device suitable for high-frequency equipment as claimed in claim 3, characterized in that: The upper shell and the lower shell of the handle are buckled together to form an internal hollow installation cavity, the adapter is fixedly arranged in the installation cavity, and a support portion capable of horizontal displacement of the handle is also penetrated in the installation cavity, and the adapter and the handle realize synchronous displacement on the support portion.

5. A switching device suitable for high-frequency equipment as claimed in claim 4, characterized in that: Both sides of the adapter are provided with snap-fitting grooves corresponding to the upper shell and the lower shell of the handle to facilitate fixing the adapter in the installation cavity inside the handle. When the handle is pulled, the adapter and the handle are synchronously displaced on the support part.

6. A switching device suitable for high-frequency equipment as claimed in claim 5, characterized in that: A traction wire is arranged in the channel on the other side of the channel of the adapter device. When the handle is pulled, the traction wire is horizontally displaced along with the handle and moves horizontally synchronously with the catheter in the catheter.

7. A switching device suitable for high-frequency equipment as claimed in claim 1, characterized in that: A blocking portion is provided in the channel on the other side of the channel of the adapter device, and the blocking portion is used to limit the installation position of the catheter in the channel.

8. A switching device suitable for high-frequency equipment as claimed in claim 1, characterized in that: The injection joint and the electrode interface are arranged on the adapter device at intervals.

9. A switching device suitable for high-frequency equipment as claimed in claim 3, characterized in that: The liquid injection joint is protrudingly arranged on the adapter device.

10. A high-frequency instrument, comprising an operating part, a main body and a cutter head, wherein the operating part, the main body and the cutter head are connected in sequence, the operating part is used to control the displacement of the cutter head in the main body and to supply power and water to the cutter head, characterized in that: The operating part includes a switching device suitable for high-frequency equipment as described in any one of claims 1-9.

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