CN105405698A - Switching structure for electronic operation device - Google Patents

Abstract

The invention discloses a switch structure of an electronic surgical device, which includes an insulating substrate, a metal part and a metal coil spring. The insulating substrate includes through holes, and the metal coil springs and metal parts are respectively located on two sides of the insulating substrate. When the metal coil spring is pressed by an external force, the metal coil spring is electrically connected to the metal part through the through hole. The invention utilizes the elasticity of the spring to provide a pressed feel when the user operates, has a long service life, and has cheap raw materials and does not need molds in the manufacturing process.

Description

Switch Structure of Electrosurgical Device

【Technical field】

The invention relates to an electronic surgical device, in particular to a switch structure of the electronic surgical device.

【Background technique】

Electric cautery technology is to use electric current to pass through the human body to make the human tissue generate resistance and generate high heat. It is the most commonly used surgical tool for cutting and stripping during endoscopic surgery or non-bleeding surgery in recent years. It can also be used to stop bleeding at the same time. Also because electrocautery can effectively cauterize tissue, reduce blood loss, shorten operation time, reduce the chance of infection and other complications, and improve medical quality, it is currently a common and mature medical device in the operating room.

The existing electronic surgical device for electrocautery - electric cautery knife, generally the electric cautery knife is equipped with a button corresponding to the switch, so that the user can quickly switch the operation. The common structure is circuit board (TACTSWITCH) or metal dome (METALDOME). The manufacturing process of the circuit board is complicated and the price is relatively expensive, while the pressing life of the metal dome is short, and the design tolerance is small. As long as the size is slightly shifted, it is easy to Causes poor hand feeling.

In view of this, it is necessary to provide a switch structure of an electronic surgical device to solve the above problems.

【Content of invention】

The object of the present invention is to provide a switch structure of an electronic surgical device that can solve the above problems.

An embodiment of the present invention provides a switch structure of an electronic surgical device, which includes an insulating substrate, a metal piece, and a metal coil spring; the insulating substrate includes a first surface, a second surface, and at least one through hole, and the second surface is opposite to the first surface , the through hole communicates the first surface and the second surface; the metal piece is arranged on the second surface; and at least one metal coil spring is arranged on the first surface and is located in the through hole, the metal coil spring includes a first end and a second end, and the second The diameter width of the end is larger than the diameter width of the through hole, and the diameter width of the first end is smaller than the diameter width of the through hole. When an external force is applied to the first end, the first end is electrically connected to the metal part; the elasticity of the metal coil spring is used to provide operation The hand feeling of pressing is relatively large, and the tolerable offset error in this design is relatively large. The manufacturing process does not require molds, and the service life is long and the price is cheap.

An embodiment of the present invention provides a switch structure of an electronic surgical device, which further includes a casing, and the casing covers an insulating substrate, a metal piece, and a metal coil spring.

An embodiment of the present invention provides a switch structure for an electronic surgical device, wherein the insulating substrate includes a fixing seat, the fixing seat is located at one end of the insulating substrate, and the fixing seat protrudes from the first surface of the insulating substrate, and a part of the insulating substrate is used as The fixing seat can save cost and simplify the manufacturing process. Another embodiment of the present invention provides a switch structure for an electronic surgical device, wherein the fixing seat is not arranged on the insulating substrate, but is protruded on the inner surface of the casing, and can be processed together when making the casing, which can further save cost.

An embodiment of the present invention provides a switch structure of an electronic surgical device, which also includes a wire, the wire is arranged on the first surface, one end of the wire is connected to the second end of the metal coil spring, and the other end of the wire is fixedly connected to the fixing seat. The wire fixes the metal coil spring, which can maintain the proper elasticity of the metal coil spring and is easier to assemble.

An embodiment of the present invention provides a switch structure of an electronic surgical device, wherein the wire has a hook-shaped portion, the hook-shaped portion is located at the other end of the wire, and hooked to the fixing seat, and the hook-shaped portion and the fixing seat are used for structural engagement , instead of using adhesives, simplifies assembly and reduces costs.

An embodiment of the present invention provides a switch structure for an electronic surgical device. The casing further includes at least one button, the button corresponds to the first end of the metal coil spring, and the button can move between the start position and the close position. When the button is in the start position The first end of the metal coil spring is electrically connected to the metal part when the key is pressed, and when the key is in the closed position, the first end of the metal coil spring is disconnected from the metal part.

Compared with the prior art, the switch structure of the electrosurgical device of the present invention utilizes the elasticity of the metal coil spring to provide the operator with a feeling of pressing. This kind of design can tolerate a large offset error, and the manufacturing process does not require molds. Long life and cheap price.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail together with the accompanying drawings.

【Description of drawings】

Fig. 1 is a diagram of the corresponding position of the housing according to the embodiment of the present invention.

Fig. 2 is a three-dimensional exploded view of the embodiment of the present invention.

Fig. 3 is a front view of an embodiment of the present invention.

Fig. 4 is a cross-sectional view of the closed position of the button according to the embodiment of the present invention.

Fig. 5 is a cross-sectional view of the button activation position according to the embodiment of the present invention.

Fig. 6 is an overall sectional view of the embodiment of the present invention.

Fig. 7 is an exploded perspective view of another embodiment of the present invention.

Fig. 8 is a partial assembly diagram of another embodiment of the present invention.

Fig. 9 is a complete appearance diagram of the embodiment of the present invention.

【detailed description】

Please refer to FIG. 1. FIG. 1 is an exploded perspective view of an embodiment of the present invention. An embodiment of the present invention provides a switch structure for an electronic surgical device, which basically includes an insulating substrate 20, a metal piece 30 and a first metal coil spring 10. . The insulating substrate 20 includes a first surface 20A, a second surface and 20B, and the first surface 20A, the second surface and 20B are two opposite surfaces of the insulating substrate 20 respectively. A first through hole 21 is opened on the insulating substrate 20 , and the first through hole 21 communicates with the first surface 20A and the second surface 20B. The metal component 30 is attached to the second surface 20B of the insulating substrate 20 . The first metal coil spring 10 is disposed on the first surface 20A and corresponds to the position of the first through hole 21 .

Please refer to FIG. 4 at the same time. FIG. 4 is a cross-sectional view of the closed position of the button according to the embodiment of the present invention. The first metal coil spring 10 is surrounded by a single metal wire, so that the first metal coil spring 10 is in the shape of a triangular pyramid. The first metal coil spring 10 includes a first end 10A and a second end 10B, and the diameter width of the second end 10B is larger than the diameter width of the first through hole 21, thereby, the first metal coil spring 10 is in the condition of no external force , will not touch the metal piece 30.

Please refer to FIG. 5 . FIG. 5 is a cross-sectional view of the activation position of the button according to the embodiment of the present invention. In contrast, since the diameter width of the first end 10A is smaller than the diameter width of the first through hole 21, when an external force is applied to the first end 10A, the first The end 10A is pressed down to touch the metal part 30 through the first through hole 21 , so that the first metal coil spring 10 is electrically connected to the metal part 30 .

The first metal coil spring 10 is electrically connected to the metal part 30 after being pressed down, and after the external force is removed, the first metal coil spring 10 returns to its original position without being electrically connected to the metal part 30 , thereby achieving the function of a switch. The invention utilizes the elasticity of the spring to provide the feeling of pressing and rebounding when the user operates, and this embodiment does not require molds in the manufacturing process, has a long service life, and has low raw material prices.

Continue referring to FIG. 1 , in the switch structure of the electronic surgical device provided in another embodiment of the present invention, the number of switches can be increased to two or more based on the needs of users, that is to say, the insulating substrate 20 can also be provided with The second through hole 22, the switch structure of the electrosurgical device also includes a second metal coil spring 11, the second metal coil spring 11 includes a first end 11A and a second end 11B, and the diameter of the second end 11B is larger than that of the second through hole. The diameter of the hole 22 is wide. The actuation mode of the second metal coil spring 11 is the same as that of the first metal coil spring 11, the difference is that when the second metal coil spring 11 is electrically connected to the metal part 30, the function of the electronic surgical device corresponding to the opening is different from that of the first metal coil When the spring 10 is electrically connected to the metal part 30 , the function of the electrosurgical device is correspondingly turned on. For example, the function of the electronic surgical device corresponding to the first metal coil spring 10 may be a cutting function, and the function of the electronic surgical device corresponding to the second metal coil spring 11 is a coagulation function.

Referring to FIG. 1 and FIG. 4 , in this embodiment, a first protection ring 211 is provided around the first through hole 21 to prevent the first metal coil 10 from shaking left and right. Please refer to FIG. 3 at the same time. FIG. 3 is a front view of an embodiment of the present invention. The first protection ring 211 is provided with a first fixing protrusion 212 and a second fixing protrusion 213 protruding above the first through hole 21 . In other words, the minimum distance between the first fixing protrusion 212 and the second fixing protrusion 213 is smaller than the diameter width of the first through hole 21 and also smaller than the maximum diameter width of the first metal coil 10, so that the first metal coil 10 can resist attached to the first through hole 21. Similarly, a second protection ring 221 is provided around the second through hole 22 in another embodiment to prevent the second metal coil 11 from shaking left and right. The second protection ring 221 is provided with a third fixing protrusion 222 and a fourth fixing protrusion 223 .

In this embodiment, the insulating substrate 20 includes a first fixing seat 201 located at one end of the insulating substrate 20 , and the first fixing seat 201 protrudes from the first surface 20A of the insulating substrate 20 . Likewise, the insulating substrate 20 includes a second fixing seat 202 located at one end of the insulating substrate 20 , and the second fixing seat 202 protrudes from the first surface 20A of the insulating substrate 20 .

In this embodiment, a first lead 101 is also included. The first lead 101 is arranged on the first surface 10A. One end of the first lead 101 is connected to the second end 10B of the first metal coil spring 10. The other end of the first lead 101 is Fixed to the first fixing seat 201, the first wire 101 is used to fix the first metal coil spring 10 to the first fixing seat 201 in addition to the function of power supply, so as to keep the spring with proper elasticity. It is also easier to assemble. Similarly, in another embodiment also includes a second wire 111, the second wire 111 is arranged on the first surface 10A, one end of the second wire 111 is connected to the second end 11B of the second metal coil spring 11, the second The other end of the wire 111 is fixedly connected to the second fixing seat 202 . Using a part of the insulating substrate 20 as the fixing seat 201 can save cost and simplify the manufacturing process.

An embodiment of the present invention provides a switch structure of an electronic surgical device, wherein the first wire 101 has a hook-shaped portion 102, the hook-shaped portion 102 is located at the other end of the first wire 101, and is hooked to the first fixing seat 201. The hook portion 102 is structurally engaged with the first fixing seat 201 instead of using adhesive, which simplifies assembly and reduces cost. Likewise, the second wire 111 in another embodiment also has a hook portion 112 corresponding to the second fixing seat 202 .

Please refer to FIG. 2. FIG. 2 is an overall exploded view of an embodiment of the present invention. The switch structure of the electronic surgical device provided by another embodiment of the present invention includes a housing 40, and the housing 40 is divided into a first housing 40A and a second housing 40A. Two shells 40B. The first housing 40A is provided with a first key 50 and a second key 51, the first key 50 corresponds to the first end 10A of the first metal coil spring 10, and the second key 51 corresponds to the second end 11 of the second metal coil spring 11. One end 11A, and the first key 50 and the second key 51 can be moved between the start position and the close position. The housing 40 covers the insulating substrate 20 , the metal piece 30 , the first metal coil spring 10 and the second metal coil spring 11 , mainly for the purpose of protection and avoiding accidental touch or contamination during use.

Referring to FIG. 4 , FIG. 4 is a cross-sectional view of the closed position of the button according to the embodiment of the present invention. One end of the first button 50 is in contact with the first end 10A of the first metal coil 10 . Therefore, when the first button 50 is in the closed position, the first metal coil 10 is located on the upper side of the insulating substrate 20 and does not have any contact with the metal part 30 , and the first metal coil 10 and the metal part 30 are in an open circuit state.

Please refer to FIG. 5 . FIG. 5 is a diagram of the starting position of the button according to the embodiment of the present invention. When the first button 50 is at the starting position, the first end 10A of the first metal coil spring 10 is electrically connected by pressing the first button 50 on the metal piece 30. In other words, when the first button 50 is pressed, the first button 50 moves from the off position to the start position, and one end of the first button 50 presses down the first end 10A of the first metal coil spring 10, so that the first end 10A passes through the through the first through hole 21 to contact the metal piece 30 . As long as the first metal coil spring 10 is in contact with the metal piece 30, the effect of conduction can be achieved. Therefore, compared with the existing switching method, even if the size of the present invention is slightly shifted, the effect of switching can still be successfully achieved. , and has a pressed feel.

Please refer to FIG. 1 and FIG. 6. FIG. 6 is an overall cross-sectional view of the embodiment of the present invention. The body 30A of the metal piece 30 is in a sheet shape, and one end of the metal piece 30 includes a sleeve 31 for connecting the knife used in the operation. , the other end of the metal piece 30 includes a stop portion 32 . The body 30A of the metal component 30 is attached to the second surface 20B of the insulating substrate 20 , and the insulating substrate 20 is locked between the sleeve 31 and the stopper 32 . The width of the body 30A of the metal member 30 is greater than the diameter of the first through hole 21 . A part of the bushing 31 extends out of the casing 40 to facilitate the replacement of a tool (not shown).

Please refer to FIG. 7. FIG. 7 is an exploded perspective view of another embodiment of the present invention, in which the first fixing seat 201 and the second fixing seat 202 are not arranged on the insulating substrate 20, but protruding inside the second housing 40B. On the surface, its position corresponds to the stop portion 32 on the metal part 30. In other words, when the metal part 30 is assembled in the second housing 40B, the stop part 32 will be located between the first fixing seat 201 and the second fixing seat 202. , arranged on the same straight line. Therefore, the first fixing seat 201 and the second fixing seat 202 are formed in one process when manufacturing the second housing 40B, and the insulating substrate 20 can be a standard substrate, which can further save the cost of the mold during manufacturing.

Please refer to FIG. 7 and FIG. 8 at the same time, which is a partial assembled view of another embodiment of the present invention. This figure reveals the complete assembly state inside the casing 40 . The front end of the casing 40 is tapered so that the user can hold it in the palm and operate it flexibly. In this embodiment, the power cord 60 is also clearly shown. When the assembly is completed, the hook-shaped part 102, the hook-shaped part 112 and the metal part 30 are respectively positioned on the first fixing seat 201, the second fixing seat 202 and the stopper. The position of the part 32 communicates with the power line 60 . The second housing 40B also includes a holding portion 41 , and the holding portion 41 includes three grooves, which can accommodate three branch wires of the power cord respectively.

Please refer to FIG. 9 . FIG. 9 is a complete appearance diagram of the embodiment of the present invention. The casing 40 has a pen-shaped appearance, and a movable first button 50 and a second button 51 are protruded from the casing.

Claims (7)

1. A switch structure of an electronic surgical device, characterized in that it comprises: An insulating substrate, including a first surface, a second surface and at least one through hole, the second surface is opposite to the first surface, and the at least one through hole communicates the first surface and the second surface; a metal piece disposed on the second surface; and At least one metal coil spring is arranged on the first surface and is located in the at least one through hole, including a first end and a second end, the diameter width of the second end is larger than the diameter width of the at least one through hole, and the diameter width of the first end is The diameter width is smaller than the diameter width of the at least one through hole, and when an external force is applied to the first end, the first end is electrically connected to the metal component. 2 . The switch structure of an electronic surgical device according to claim 1 , further comprising a casing covering the insulating substrate, the metal component and the at least one metal coil spring. 3 . 3 . The switch structure of the electronic surgical device according to claim 2 , wherein the casing comprises at least one fixing seat protruding from an inner surface of the casing. 4 . 4 . The switch structure of an electronic surgical device according to claim 1 , wherein the insulating substrate comprises a fixing seat located at one end of the insulating substrate and protruding from the first surface. 5. The switch structure of the electrosurgical device according to claim 3 or 4, further comprising a wire disposed on the first surface, one end of the wire connected to the second end of the metal coil spring, and the other One end is fixedly connected to the fixing seat. 6 . The switch structure of the electronic surgical device according to claim 5 , wherein the wire has a hook-shaped portion located at the other end of the wire and hooked to the fixing base. 6 . 7. The switch structure of the electronic surgical device according to claim 6, wherein the casing further comprises at least one button corresponding to the first end of the at least one metal coil spring, and the at least one button is movable in An activated position and a closed position, when the at least one key is located in the activated position, the first end is electrically connected to the metal part by pressing the at least one key, and when the at least one key is located in the closed position, The first end is disconnected from the metal piece.