A fluid tubing for a laparoscopic electrocoagulation device

Abstract

This utility model relates to the field of medical device technology, specifically to a fluid tubing for an endoscopic electrocoagulation instrument, comprising a tubing body and a control valve. The tubing body includes a counter-current tubing and / or a co-current tubing, each tubing body having a functional end and a control end. The functional end is fitted to the outer wall of the head of the instrument, and the control end is installed inside the grip handle and connected to a connector at the tail end of the grip handle. The control valve is installed on the abdomen of the grip handle and connected to the control end of the tubing body to control the opening and closing of the tubing body. This application, by adding a control valve on the abdomen of the grip handle, allows the operator to directly perform functions such as dripping, aspiration, and flushing with one hand, without relying on an external host or assistance from others, thus shortening the operation response time. The position of the control valve conforms to ergonomic design; the abdomen of the grip handle is within the area accessible to the middle and index fingers, adapting to the grip posture during surgery and reducing operator fatigue.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a fluid pipeline for an endoscopic electrocoagulation device. Background Technology

[0002] In laparoscopic surgery, medical electrocoagulation instruments are key equipment, often requiring the use of tubing for procedures such as dripping, aspiration, and irrigation to maintain a clear surgical field or complete related treatments. In existing technologies, the tubing structure of these instruments is typically controlled by an externally connected host device. This means that during surgery, the operator must rely on buttons, knobs, and other controls on the external host to adjust the tubing functions, resulting in a lengthy procedure, difficulty in achieving real-time response, and consequently affecting the continuity of the surgery, especially reducing precision in delicate procedures. Alternatively, additional personnel may be needed to operate the host device, increasing the cost of surgical team collaboration and potentially causing delays due to communication errors. Utility Model Content

[0003] The purpose of this invention is to provide a fluid pipeline for endoscopic electrocoagulation instruments to solve the problem of inconvenient on / off control operation of the pipeline structure of existing traditional Chinese medicine electrocoagulation instruments.

[0004] The technical solution of this utility model is: a fluid pipeline for an endoscopic electrocoagulation instrument, comprising: The pipeline body includes a counter-current pipeline and / or a co-current pipeline. Each pipeline body has a functional end and a control end. The functional end is disposed in contact with the outer wall of the head of the actuator, and the control end is installed in the gripping operating handle and connected to the connector at the tail end of the gripping operating handle. A control valve is installed on the abdomen of the gripping operating handle and connected to the control end of the pipeline body to control the opening and closing of the pipeline body.

[0005] Preferably, the control valve includes a fixedly mounted valve body and a movable valve control. The valve body is fixed to the gripping operating handle and has a first interface and a second interface located inside the gripping operating handle; the operating end of the pipeline body is cut off and connected to the first interface and the second interface respectively. The valve control is coaxially inserted into the valve body and moves along the central axis under external force, thus opening and closing the first and second interfaces.

[0006] Preferably, the inner end of the valve body has a plurality of first guide surfaces, second guide surfaces and guide grooves arranged sequentially; a stop surface is formed between the first guide surface and the second guide surface; The valve control includes a valve button, a valve cam, a valve core, and a compression spring; the valve cam is fixed relative to the valve core, the valve button extends beyond the gripping operating handle, and is driven by force to have two stationary positions that abut against the stop surface or enter the guide groove, thereby giving the valve core two positions along the axial direction to open and close the first interface and the second interface.

[0007] Preferably, the valve body includes a first body and a second body arranged coaxially, the first interface and the second interface are disposed on the first body, and the first guide surface, the second guide surface and the guide groove are disposed on one side of the second body at the inner end of the first body; The valve button is inserted into the second body and can slide axially. The inner end of the valve button is serrated. The valve cam is inserted into the first body and can slide and rotate axially. The end of the valve cam facing the valve button has several racks. The end of the rack has an inclined surface that slides in cooperation with the first guide surface or the second guide surface. Driven by the serrated valve button, the racks abut against the stop surface or enter the guide groove in sequence.

[0008] Preferably, the valve cam and valve core are constructed as an integral structure, or the valve cam and valve core are constructed as separate structures and fixedly connected.

[0009] Preferably, the first interface and the second interface have the same orientation and both face the spine of the gripping operating handle, and the space between the abdomen and the spine forms a space for the pipe body to bend.

[0010] Preferably, the first interface and the second interface have different orientations, with the first interface facing the spine of the operating handle and the second interface facing the connector at the tail end of the gripping operating handle.

[0011] Preferably, the actuator is connected to the gripping handle via a hollow extension shaft, and the tubing body passes through the extension shaft.

[0012] Preferably, the fluid in the forward flow pipeline flows from the control end to the functional end, and the fluid in the reverse flow pipeline flows from the functional end to the control end; The extension length of the actuator in the counter-current pipeline is greater than the extension length of the actuator in the co-current pipeline.

[0013] Compared with the prior art, the advantages of this utility model are: In medical electrocoagulation devices equipped with fluid lines, a control valve is added to the abdomen of the handle, allowing the operator to directly perform functions such as dripping, aspiration, and flushing with one hand, without relying on an external host or assistance from others, thus shortening the operation response time. The control valve's position is ergonomically designed, with the abdomen of the handle within easy reach of the middle and index fingers, adapting to the grip posture during surgery and reducing operator fatigue. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the fluid pipeline for an endoscopic electrocoagulation device according to the present invention in an application scenario; Figure 2 This is a partial structural schematic diagram of a fluid pipeline for an endoscopic electrocoagulation device according to one embodiment of the present invention; Figure 3 This is a partial structural schematic diagram of a fluid pipeline for an endoscopic electrocoagulation device according to another embodiment of the present invention; Figure 4 This is a schematic cross-sectional view of the control valve described in this utility model along the central axis of the valve body; Figure 5 This is a schematic cross-sectional view of the control valve described in this utility model along the thickness of the valve body wall; Figure 6 This is a schematic diagram of the second body, valve button, and rack of this utility model; Figure 7 This is a schematic diagram of the rack and pinion located at the stop surface of this utility model. Figure 8 This is a schematic diagram illustrating the principle of how the valve button of this invention drives the rack to move along the stop surface; Figure 9 This is a schematic diagram illustrating the principle of the rack moving across the stop surface and conforming to the second guide surface as described in this utility model. Figure 10 This is a schematic diagram illustrating the principle of the rack moving into the guide groove according to this utility model; Figure 11 This is a schematic diagram illustrating the principle of how the valve button of this invention drives the rack to move along the guide groove. Figure 12 This is a schematic diagram illustrating the principle of the rack moving across the side wall of the guide groove and conforming to the first guide surface as described in this utility model. Figure 13 This is a schematic diagram illustrating the principle of the rack reaching the next stop surface as described in this utility model.

[0015] Among them: 1. Pipeline body; 11. Flow-through piping; 12. Flow-back piping; 2. Control valve; 201, First Interface; 202, Second Interface; 21. Valve body; 211. First body; 212. Second body; 22. Valve control; 221. Valve button; 2211. Guide block; 222. Valve cam; 223. Valve core; 224. Compression spring. 23. First guide surface; 24. Stop surface; 25. Second guide surface; 26. Guide groove; 27. Sawtooth; 28. Rack; 29. ​​Inclined surface; 3. Actuating instruments; 4. Extended shaft section; 5. Hold the operating handle; 51. Spine, 52. Abdomen, 53. Connector 5. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to specific embodiments: like Figure 1 As shown, a fluid tubing for an endoscopic electrocoagulation instrument, used in medical electrocoagulation instruments, includes a tubing body 1 and a control valve 2. For ease of understanding, the structural components of an electrocoagulation instrument (e.g., electrocoagulation forceps) are first described, including an actuator 3, an extension shaft 4, and a gripping handle 5. In electrocoagulation forceps, the actuator 3 is a pair of forceps used for opening and closing; in electrocoagulation forceps, the actuator 3 is a pair of forceps used for opening and closing. The extension shaft 4 is a hollow tubular structure with a certain length, used to increase the distance between the actuator 3 and the gripping handle 5, making the instrument suitable for endoscopic surgery. The gripping handle 5 is similar to a gun handle structure, facilitating hand gripping and operation, and has an upward-facing spine 51 and a downward-facing abdomen 52.

[0017] The pipeline body 1 extends through the extension shaft 4 and includes a counter-current pipeline 12 and / or a forward-current pipeline 11. Each pipeline body 1 has a functional end and a control end. The functional end is fitted to the outer wall of the head of the actuator 3, and the control end is installed in the gripping operating handle 5 and connected to the connector 53 at the tail end of the gripping operating handle 5.

[0018] In this embodiment, both a counter-current conduit 12 and a forward-current conduit 11 are configured. The fluid in the forward-current conduit 11 flows from the control end to the functional end, while the fluid in the counter-current conduit 12 flows from the functional end to the control end. In actual use, the forward-current conduit 11 is generally used to perform a dripping operation, while the counter-current conduit 12 is generally used to aspirate tissue fluid, debris, smoke from body cavities, etc. Since the liquid can flow downstream during dripping, and the counter-current conduit 12 needs to be closer to the liquid surface during aspiration, the extension length of the counter-current conduit 12 adhering to the actuator 3 is greater than the extension length of the forward-current conduit 11 adhering to the actuator 3.

[0019] Combination Figure 1 , Figure 2 As shown, the control valve 2 is installed at the abdomen 52 position of the gripping operating handle 5 and is connected to the control end of the pipeline body 1 to control the opening and closing of the pipeline body 1.

[0020] Combined Figure 4 As shown, the control valve 2 includes a fixedly mounted valve body 21 and a movable valve control 22; the valve body 21 is fixed on the grip operating handle 5 and has a first interface 201 and a second interface 202 located inside the grip operating handle 5; the operating end of the pipeline body 1 is cut off and connected to the first interface 201 and the second interface 202 respectively; the valve control 22 is coaxially inserted into the valve body 21, driven by external force to move along the central axis, and switches the first interface 201 and the second interface 202 on and off.

[0021] In this embodiment, such as Figure 2 As shown, the first interface 201 and the second interface 202 have the same orientation and are both facing the spine 51 of the gripping operating handle 5. The space between the abdomen 52 and the spine 51 forms a space for the pipe body 1 to bend. At the same time, the bent pipe body 1 also provides space for the layout of other structures.

[0022] Of course, in other implementations, such as Figure 3 As shown, the first interface 201 and the second interface 202 can also have different orientations. The first interface 201 faces the spine 51 of the operating handle, and the second interface 202 faces the connector 53 at the end of the operating handle 5. In this case, the pipeline body 1 does not need to be bent.

[0023] The working principle of control valve 2 is mainly based on the cooperation between valve body 21 and valve control 22.

[0024] like Figure 4 , Figure 5 As shown, the valve body 21 includes a first body 211 and a second body 212 arranged coaxially.

[0025] The first body 211 is a cylindrical structure with one end open, fixed on the grip operation handle 5, with the open end facing outward from the grip operation handle 5; the first interface 201 and the second interface 202 are both disposed on the outer wall of the first body 211.

[0026] The second body 212 has a cylindrical structure with openings at both ends, and is inserted and fixed to one side of the opening end of the first body 211. The second body 212, located on one side of the inner end of the first body 211, is provided with a first guide surface 23, a stop surface 24, a second guide surface 25, and a guide groove 26; Figure 6As shown in the figure, the thick solid line is a partial structural diagram of the second body 212 unfolded into a planar shape. For a clearer understanding, the first guide surface 23, the stop surface 24, the second guide surface 25, and the guide groove 26 are arranged sequentially and continuously. The first guide surface 23 and the second guide surface 25 are inclined and have the same inclination direction. The stop surface 24 connects the first guide surface 23 and the second guide surface 25 and is parallel to the central axis of the valve body 21. The length direction of the guide groove 26 is also parallel to the central axis of the valve body 21.

[0027] like Figure 4 As shown, the valve control 22 includes a valve button 221, a valve cam 222, a valve core 223, and a compression spring 224. The valve cam 222 and the valve core 223 are fixed relative to each other. Therefore, the valve cam 222 and the valve core 223 can be constructed as an integral structure, or they can be constructed as separate structures and fixedly connected. The compression spring 224 is disposed in the first body 211 and is always pressed against the valve core 223.

[0028] The valve button 221 is inserted into the second body 212 and coaxially arranged with it. For convenient manual operation, the end of the valve button 221 extends beyond the grip handle 5. A guide block 2211 is provided on the outer wall of the end of the valve button 221 inserted into the second body 212. The guide block 2211 is accommodated in a guide groove 26, thus ensuring that the valve button 221 can only move axially and will not rotate. Figure 6 As shown, the inner end of the valve button 221 is serrated, and a number of serrations 27 are distributed thereon, with the top of the serrations facing the guide groove 26 at the corresponding position.

[0029] The valve cam 222 is inserted into the first body 211 and can translate and rotate axially. The end of the valve cam 222 facing the valve button 221 has several racks 28, and the ends of the racks 28 have inclined surfaces 29 that slide with the first guide surface 23 or the second guide surface 25. Driven by the sawtooth valve button 221, the racks 28 successively abut against the stop surface 24 or enter the guide groove 26. That is, the end of the valve cam 222 has two stationary positions abutting against the stop surface 24 or entering the guide groove 26, thereby giving the valve core 223 two axial positions to respectively open and close the first interface 201 and the second interface 202.

[0030] To understand this more clearly, the following will be combined with... Figures 7-13 Perform action analysis: a. Combination Figure 7 As shown, in the initial state, the rack 28 abuts against the stop surface 24 and is in a stationary position. At this time, the valve core 223 is in the first position, the first interface 201 and the second interface 202 are blocked by the valve core 223, and the pipeline body 1 is in the disconnected state. b. Combination Figure 8 As shown, when force is applied to the valve button 221, it moves towards the rack 28. When the serrated structure touches the rack 28, it pushes the rack 28 to move synchronously. At this time, the rack 28 always moves in contact with the stop surface 24; Figure 9 As shown, after the rack 28 passes the stop surface 24, under the action of the compression spring 224, the saw teeth will once again adhere to the second guide surface 25 and move in the opposite direction, with the end abutting against the root of the saw tooth structure. c. For example Figure 10 As shown, when the valve button 221 is manually released, the compression spring 224 will push the rack 28 to rotate and move along the central axis, and then enter the guide groove 26. At this time, it is in another stationary position. The valve core 223 is set to be in the second position. The first interface 201 and the second interface 202 are connected, and the pipeline body 1 is in the open state. Thus, pressing the valve button 221 once controls the valve 2 to open from closed.

[0031] d. For example Figure 11 As shown, when valve button 221 is pressed manually, valve button 221 pushes rack 28 to move synchronously, causing rack 28 to move out of guide groove 26. When rack 28 passes the side wall of guide groove 26, it will retract a small displacement along the first guide surface 23. (Refer to...) Figure 12 As shown; e. Release valve button 221. At this time, rack 28 is compressed by spring 224 and continues to move along first guide surface 23 until it abuts against stop surface 24, switching to the state in a above. At this point, pressing the valve button 221 again controls the valve 2 from opening to closing.

[0032] In summary, each press of the valve button 221 switches the position of the valve core 223, thereby switching the control valve 2 on or off. In this application, a control valve 2 is added to the abdomen 52 of the operating handle 5 in a medical electrocoagulation device equipped with fluid tubing. This allows the operator to directly perform functions such as dripping, aspiration, and flushing by operating the control valve 2 with one hand, without relying on an external host or assistance from others, thus shortening the operation response time.

[0033] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.

Claims

1. A fluid tubing for a laparoscopic electrocoagulation instrument, characterized in that, include: The pipeline body includes a counter-current pipeline and / or a co-current pipeline. Each pipeline body has a functional end and a control end. The functional end is disposed in contact with the outer wall of the head of the actuator, and the control end is installed in the gripping operating handle and connected to the connector at the tail end of the gripping operating handle. A control valve is installed on the abdomen of the gripping operating handle and connected to the control end of the pipeline body to control the opening and closing of the pipeline body.

2. The fluid tubing for a laparoscopic electrocoagulation instrument according to claim 1, characterized in that: The control valve includes a fixed valve body and a movable valve control. The valve body is fixed to the gripping operating handle and has a first interface and a second interface located inside the gripping operating handle; the operating end of the pipeline body is cut off and connected to the first interface and the second interface respectively. The valve control is coaxially inserted into the valve body and is driven by external force to move along the central axis, thus opening and closing the first interface and the second interface.

3. The fluid tubing for a laparoscopic electrocoagulation instrument according to claim 2, characterized in that: The inner end of the valve body has a plurality of first guide surfaces, second guide surfaces and guide grooves arranged sequentially; a stop surface is formed between the first guide surface and the second guide surface; The valve control includes a valve button, a valve cam, a valve core, and a compression spring; the valve cam is fixed relative to the valve core, the valve button extends beyond the gripping operating handle, and is driven by force to have two stationary positions that abut against the stop surface or enter the guide groove, thereby giving the valve core two positions along the axial direction to open and close the first interface and the second interface.

4. The fluid tubing for a laparoscopic electrocoagulation device according to claim 3, characterized in that: The valve body includes a first body and a second body arranged coaxially. The first interface and the second interface are disposed on the first body. The first guide surface, the second guide surface and the guide groove are disposed on one side of the second body at the inner end of the first body. The valve button is inserted into the second body and can slide axially. The inner end of the valve button is serrated. The valve cam is inserted into the first body and can slide and rotate axially. The end of the valve cam facing the valve button has several racks. The end of the rack has an inclined surface that slides with the first guide surface or the second guide surface. Driven by the serrated valve button, the racks abut against the stop surface or enter the guide groove in sequence.

5. The fluid tubing for a laparoscopic electrocoagulation instrument according to claim 3, characterized in that: The valve cam and valve core are either an integral structure or separate structures that are fixedly connected.

6. The fluid tubing for a laparoscopic electrocoagulation instrument according to claim 3, characterized in that: The first interface and the second interface have the same orientation and both face the spine of the gripping operating handle. The space between the abdomen and the spine forms a space for the pipe body to bend.

7. The fluid tubing for a laparoscopic electrocoagulation instrument according to claim 3, characterized in that: The first interface and the second interface have different orientations. The first interface faces the spine of the operating handle, and the second interface faces the connector at the tail end of the gripping operating handle.

8. The fluid tubing for a laparoscopic electrocoagulation instrument according to claim 1, characterized in that: The actuator is connected to the gripping handle via a hollow extension shaft, and the tubing body passes through the extension shaft.

9. The fluid tubing for a laparoscopic electrocoagulation instrument according to claim 8, characterized in that: The fluid in the forward flow pipeline flows from the control end to the functional end, and the fluid in the reverse flow pipeline flows from the functional end to the control end; The extension length of the actuator in the counter-current pipeline is greater than the extension length of the actuator in the co-current pipeline.

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