Single-key switching device for surgical instrument and surgical instrument

Abstract

The single-key switching device comprises a key, a sliding part, a valve body and a valve element, one end of the sliding part is connected with the key, the other end of the sliding part is arranged in the valve body, a plurality of sets of connecting holes are formed in the surface of the valve body, the connecting holes are located in the same section, a containing cavity is formed in the sliding part, and the valve element is arranged in the containing cavity. The valve element is sleeved with the sliding part in a sliding mode through the containing cavity, an elastic piece is arranged between the sliding part and the valve element, a guide groove is formed in the circumferential side of the valve element, the guide groove is arranged around the axis of the valve element, the guide groove is provided with a plurality of first limiting grooves and second limiting grooves, and the first limiting grooves and the second limiting grooves are arranged in a staggered mode. The sliding block is arranged in the guide groove and slides between the first limiting groove and the second limiting groove, the valve element is provided with a through hole, and the through hole is formed in the radial direction. According to the utility model, a user can open, close and switch the fluid channel by pressing one key once, the structure is simple, and the operation of the user is convenient.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a single-key switching device for surgical instruments and a surgical instrument. Background Technology

[0002] Surgical instruments are fundamental tools used in surgical procedures, such as staplers and ablation / irrigation electrode devices. Surgical instruments typically include a handle and buttons. The handle facilitates gripping, while the buttons control various functions. For example, ablation / irrigation electrode devices are usually used in conjunction with high-frequency surgical equipment. They utilize high-frequency electrical energy to generate a thermal effect, converting electrical energy into heat energy to heat the target tissue, causing cell protein denaturation and tissue structure destruction. Furthermore, the flushing and suction functions of the device help remove blood and other tissue from the surgical area. When using an ablation / irrigation electrode device, the user needs to switch between flushing and suction functions, usually through a trigger mechanism such as pressing an operating lever on the handle. Existing devices often have multiple operating levers; when flushing is needed, the flushing lever is pressed; when suction is needed, another lever is operated. This method makes the device complex, requiring the user to constantly switch between different fingers or use multiple fingers simultaneously, resulting in poor usability. Utility Model Content

[0003] This invention provides a simple, user-friendly single-button switching device and surgical instrument to address the problems of existing technologies.

[0004] The specific technical solution is as follows: A single-button switching device for surgical instruments includes a button, a sliding part, a valve body, and a valve core. One end of the sliding part is connected to the button, and the other end is disposed in the valve body. The surface of the valve body is provided with several sets of connecting holes, which are located on the same cross section. The sliding part is provided with a receiving cavity, and the sliding part is slidably sleeved on the valve core through the receiving cavity. An elastic element is provided between the sliding part and the valve core. The valve core is provided with a guide groove on its periphery, which is arranged around the valve core axis. The guide groove has several first limiting grooves and second limiting grooves, which are staggered. The sliding part is provided with a slider, which is disposed in the guide groove and slides between the first limiting groove and the second limiting groove. The valve core is provided with a through hole, which is radially arranged. When the button is pressed, the slider moves from the first limiting groove to the second limiting groove, and the valve core rotates along the axis. When the button is released, the slider moves from the second limiting groove to another first limiting groove, and the valve core rotates along the axis. The through hole of the valve core is connected to or staggered with the connecting hole.

[0005] In some embodiments, the space between the first limiting groove and the second limiting groove is an arc-shaped groove, which is arranged in a sawtooth pattern around the axis.

[0006] In some embodiments, the slider is provided with a guide slope, which is correspondingly arranged with the tip of the first and second limiting grooves.

[0007] In some embodiments, the sliding part has a raised strip on its surface, and the valve body has a sliding groove arranged axially, with the raised strip disposed in the sliding groove.

[0008] In some embodiments, the valve core includes a wide diameter portion and a narrow diameter portion disposed at one end of the wide diameter portion, a through hole is disposed on the wide diameter portion, a guide groove is disposed on the narrow diameter portion, a gap is provided between the narrow diameter portion and the valve body, and an annular portion of the sliding portion is disposed in the gap.

[0009] In some embodiments, the annular portion has a boss, which is disposed corresponding to the end of the narrow diameter portion.

[0010] In some embodiments, the elastic element is a spring, which is arranged along the axial direction.

[0011] In some embodiments, each set of connection holes has two connection holes arranged opposite to each other, and the valve body is provided with two sets of connection holes.

[0012] In some embodiments, a mounting base is provided at one end of the valve body, and the valve core is disposed on the mounting base.

[0013] A surgical instrument includes a handle, a catheter disposed within the handle, a single-button switching device for the surgical instrument on the handle, and the catheter being connected to a connection hole in a valve body.

[0014] The technical effects of this utility model are as follows: The single-button switching device and surgical instrument of this utility model enable users to open, close and switch the fluid channel with a single button press. The structure is relatively simple and convenient for users to operate. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the surgical instruments according to an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of a single-key switching device according to an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the slider in an embodiment of the present invention.

[0019] Figure 4 This is a schematic diagram of the valve core according to an embodiment of the present invention.

[0020] Figure 5 This is another schematic diagram of the valve core according to an embodiment of the present utility model.

[0021] Figure 6 This is a schematic diagram of the valve body according to an embodiment of the present invention.

[0022] Figure 7 This is a schematic diagram of the sliding part according to an embodiment of the present invention.

[0023] Figure 8 This is another schematic diagram of the valve body according to an embodiment of the present utility model. Detailed Implementation

[0024] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0028] like Figures 1 to 8As shown, this embodiment of a single-button switching device for surgical instruments includes a button 1, a sliding part 2, a valve body 3, and a valve core 4. One end of the sliding part 2 is connected to the button 1, and the other end is disposed inside the valve body 3. The surface of the valve body 3 has several sets of connecting holes 31, which are located on the same cross section, i.e., the connecting holes 31 are spaced apart circumferentially. The sliding part 2 has a receiving cavity 21, through which the sliding part 2 is slidably fitted onto the valve core 4. An elastic element 5 is provided between the sliding part 2 and the valve core 4, and the elastic element 5 is compressed when the sliding part 2 moves toward the valve core 4. The valve core 4 has a guide groove 41 on its periphery, which surrounds the axis of the valve core 4. The guide groove 41 has several first limiting grooves 411 and second limiting grooves 412, which are staggered. The sliding part 2 has a slider 6, which is disposed within the guide groove 41 and slides between the first limiting grooves 411 and the second limiting grooves 412. The valve core 4 has a through hole 43, which is radially arranged, meaning it is perpendicular to the X-axis and penetrates the valve core 4. When the button is pressed, the slider 6 moves from the first limiting groove 411 to the second limiting groove 412, and the valve core 4 rotates along the axis. When the button is released, the slider moves from the second limiting groove 412 to the other first limiting groove 411, and the valve core 4 rotates along the axis. The through hole 43 of the valve core 4 is either connected to or misaligned with the connecting hole 31. In the above technical solution, if the connecting hole 31 and the through hole 43 are misaligned in the initial state, the connecting hole 31 and the through hole 43 cannot conduct electricity. By pressing button 1, the user moves sliding part 2 along the X-axis, causing it to move towards valve core 4. Elastic element 5 is compressed, and slider 6 slides along guide groove 41, causing valve core 4 to rotate. When slider 6 reaches the second limiting groove 411, releasing button 1 causes sliding part 2 to move slider 6 past the second limiting groove 411 back to the first limiting groove 411 under elastic force, thus rotating valve core 4 by a certain angle. At this point, a set of connecting holes 31 connects with through hole 43. Pressing button 1 again and releasing it causes valve core 4 to rotate by a certain angle again, misaligning connecting holes 31 with through hole 43. Pressing button 1 again and releasing it connects another set of connecting holes 31 with through hole 43. Thus, a single press of button 1 can achieve the opening, closing, opening, and closing of two connecting holes 31 in a continuous cycle. Through this technical solution, pressing the button rotates valve core 4, allowing different connecting holes and through holes to connect, and different fluids to flow through connecting holes 31 and through holes 43.

[0029] In this embodiment, an arc-shaped groove 413 is formed between the first limiting groove 411 and the second limiting groove 412. The arc-shaped groove 413 is arranged in a sawtooth pattern around the axis X, allowing the slider 6 to slide continuously within the guide groove, while the valve core rotates continuously around the axis X. The slider 6 is provided with a guide slope 61, which corresponds to the tip 414 of the first and second limiting grooves. When the slider 6 moves, the tip 414 abuts against the guide slope 61, and the slider 6 pushes the valve core 3 to rotate. The tip 414 is offset from the recess 415 and is not directly opposite it. Therefore, when the slider 6 slides into the recess 415, it passes over the tip 414, and when the slider returns to its original position, it enters another arc-shaped groove 413.

[0030] In this embodiment, the surface of the sliding part 2 has a raised strip 22, and the valve body 3 has a sliding groove 33 arranged axially. The raised strip 22 is disposed in the sliding groove 33, thereby making the sliding part 2 move more smoothly. The valve core 4 includes a wide diameter part 44 and a narrow diameter part 45 disposed at one end of the wide diameter part 44. A through hole 43 is disposed on the wide diameter part 45, and a guide groove 41 is disposed on the narrow diameter part 45. There is a gap 46 between the narrow diameter part 45 and the valve body 3. The annular part 23 of the sliding part 2 is disposed in the gap 46, thereby allowing the sliding part 2 to slide relative to the valve core. The annular part 23 has a boss 231, which is disposed corresponding to the end of the narrow diameter part 45, and is used to limit the sliding part 2. The elastic element 5 is a spring, which is arranged along the X-axis, so that the button 1 can extend and retract when pressed.

[0031] In this embodiment, each set of connection holes has two oppositely arranged connection holes 31. The valve body 3 has two sets of connection holes, that is, four connection holes. Each connection hole 31 is connected to a conduit 7. When the two oppositely arranged connection holes 31 are respectively opposite to the through hole 43, the two opposite conduits 7 can be connected, allowing fluid to enter the other conduit 7 from one conduit 7 through the through hole 43. One end of the valve body 3 is provided with a mounting seat 8, and the valve core 4 is mounted on the mounting seat 8, thereby facilitating the installation of the valve body and the valve core.

[0032] like Figure 1The image shows a surgical instrument using the aforementioned single-button switching device. In this embodiment, the surgical instrument is a flushing-aspiration ablation electrode device, including a handle 9. A conduit 7 is located within the handle 9. The single-button switching device is mounted on the handle. The conduit 7 is connected to the connection hole 31 of the valve body 3. Four conduits 7 are respectively a first flushing tube 71, a second flushing tube 72, and a first suction tube 73 and a second suction tube 74, arranged opposite to each other. Initially, the connection hole 31 and the through hole 43 are misaligned, and the conduits are not connected. After the user presses the button once, the first flushing tube 71 connects to the second flushing tube 72 through the through hole 43, allowing the flushing fluid to enter the second flushing tube 72 after passing through the through hole 43 from the first flushing tube 71. After the user presses the button again, the first and second flushing tubes disconnect. After the user presses the button again, the first suction tube 73 and the second suction tube 74 connect through the through hole 43, allowing the fluid drawn into the first suction tube 73 to enter the second suction tube 74 through the through hole 43.

[0033] The single-button switching device and surgical instrument described above enable users to open, close, and switch fluid channels with a single button press. The structure is relatively simple and convenient for users to operate.

[0034] The foregoing has described a single-button switching device for surgical instruments and the surgical instruments themselves according to this utility model. However, this utility model is not limited to the specific embodiments described above. Various modifications and alterations can be made without departing from the scope of the claims. This utility model includes all modifications and alterations within the scope of the claims.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A single-key switching device for surgical instruments, characterized in that, The device includes a button, a sliding part, a valve body, and a valve core. One end of the sliding part is connected to the button, and the other end is disposed in the valve body. The valve body surface has several sets of connecting holes located on the same cross section. The sliding part has a receiving cavity, through which it slides onto the valve core. An elastic element is provided between the sliding part and the valve core. The valve core has a guide groove around its periphery, which surrounds the valve core axis. The guide groove has several first limiting grooves and second limiting grooves, which are offset from each other. The sliding part has a slider, which is disposed in the guide groove and slides between the first and second limiting grooves. The valve core has a through hole, which is radially arranged. When the button is pressed, the slider moves from the first limiting groove to the second limiting groove, and the valve core rotates along the axis. When the button is released, the slider moves from the second limiting groove to another first limiting groove, and the valve core rotates along the axis. The through hole of the valve core is connected to or offset from the connecting hole.

2. The single-key switching device for surgical instruments according to claim 1, characterized in that, The first limiting groove and the second limiting groove are connected by an arc-shaped groove, which is arranged in a sawtooth pattern around the axis.

3. The single-key switching device for surgical instruments according to claim 2, characterized in that, The slider is provided with a guide slope, which is correspondingly set with the tip of the first and second limiting grooves.

4. The single-key switching device for surgical instruments according to claim 1, characterized in that, The sliding part has a raised strip on its surface, and the valve body has a sliding groove arranged axially, with the raised strip disposed in the sliding groove.

5. The single-key switching device for surgical instruments according to claim 1, characterized in that, The valve core includes a wide diameter portion and a narrow diameter portion disposed at one end of the wide diameter portion. A through hole is disposed on the wide diameter portion, a guide groove is disposed on the narrow diameter portion, and there is a gap between the narrow diameter portion and the valve body. The annular portion of the sliding part is disposed in the gap.

6. The single-key switching device for surgical instruments according to claim 5, characterized in that, The annular portion has a boss, which is provided correspondingly to the end of the narrow diameter portion.

7. The single-key switching device for surgical instruments according to claim 1, characterized in that, The elastic element is a spring, which is arranged along the axial direction.

8. The single-key switching device for surgical instruments according to claim 1, characterized in that, Each set of connection holes has two connection holes arranged opposite each other, and the valve body has two sets of connection holes.

9. The single-key switching device for surgical instruments according to claim 1, characterized in that, The valve body is provided with a mounting seat at one end, and the valve core is mounted on the mounting seat.

10. A surgical instrument, comprising a handle, wherein a catheter is disposed within the handle, characterized in that, The handle is provided with a single-button switching device for surgical instruments as described in any one of claims 1 to 9, and the catheter is connected to the connection hole of the valve body.

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