A switchable surgical electrode

Abstract

The present invention discloses a switchable surgical electrode, comprising a handle, wherein the handle is connected to two groups of electrode bodies which are sleeved with each other, wherein one group of electrode bodies can slide axially relative to the other group of electrode bodies to form coaxial telescopic extension through the drive of a driving member, so that the two groups of electrode bodies can switch with each other; the electrode bodies of the present invention can coaxially extend and retract, thereby realizing rapid switching between the two groups of electrode bodies, avoiding the complication of the operating process caused by frequent replacement of surgical electrodes with different functions, improving surgical efficiency, and at the same time reducing the number of surgical electrodes with different functions to be equipped during surgery, thereby reducing surgical costs.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a switchable surgical electrode. Background Art

[0002] Surgery is an important means of treating various diseases. During the implementation of surgical operations, various electrically driven surgical equipment or instruments have occupied an indispensable position, such as electrosurgery, electrocoagulation, hemostatic electrodes and ablation electrodes; the electrode ends of such instruments (i.e. the head end of the instrument that contacts the tissue, also commonly referred to as "electrodes" in clinical practice) mainly include: needle electrodes (the end of the electrode is sharp, similar to the tip of a needle), plate electrodes (the end of the electrode is flat and plate-like, similar to a flat-head screwdriver) and bean-shaped electrodes (the end of the electrode is round and blunt, similar to a bean).

[0003] The functions and uses of the three commonly used electrodes mentioned above are different:

[0004] (1) The contact surface between the needle electrode and human tissue is extremely small, and the thermal damage is also very small. It is mainly used for fine cutting and separation of tissues, but the hemostasis / coagulation effect is poor;

[0005] (2) The plate-shaped electrode has a large contact surface with human tissue, resulting in relatively large thermal damage. During surgery, it can not only cut tissue more quickly, but also produce a better hemostasis / coagulation effect. Therefore, it is mainly used for rapid cutting, separation and hemostasis / coagulation of ordinary tissues.

[0006] (3) The bean-shaped electrode has the largest contact surface with human tissue and causes greater thermal damage. It has no function of cutting tissue, but has the best hemostasis or coagulation effect. It is mainly used for rapid and effective coagulation hemostasis of tissue bleeding, especially for coagulation hemostasis of sinusoidal tissue (such as liver, spleen, etc.) and vascular-rich tissue (such as hemorrhoids, tumors, hemangiomas, etc.).

[0007] However, in existing surgical equipment or instruments, the above three types of surgical electrodes are independently provided. Therefore, the surgical electrodes need to be replaced repeatedly and frequently during the operation, which causes great inconvenience to the surgical operation and also brings a series of problems, such as:

[0008] (1) Excessive bleeding during surgery affects the clarity of the surgical field of view;

[0009] (2) Prolonging the operation time:

[0010] (3) Affecting the hemostasis or coagulation effect;

[0011] (4) It is easy to cause complications due to misoperation;

[0012] (5) During the operation, multiple sets of surgical electrodes with different shapes and functions are required, which increases the cost of the operation and the financial burden on the patient. Summary of the invention

[0013] The purpose of the present invention is to provide a switchable surgical electrode, which can avoid the complication of the operation process caused by frequent replacement of surgical electrodes with different functions during surgery, improve the surgical efficiency, and at the same time reduce the number of surgical electrodes with different functions during surgery and reduce the surgical cost.

[0014] The purpose of the present invention is achieved through the following technical solutions:

[0015] A switchable surgical electrode comprises a handle, wherein the handle is connected to two sets of electrode bodies which are sleeved together, wherein one set of electrode bodies can slide axially relative to the other set of electrode bodies to form coaxial telescopic movement through the drive of a driving member, so that the two sets of electrode bodies can switch with each other.

[0016] On the basis of the above technical solution, the present invention can be improved as follows:

[0017] Furthermore, the electrode body includes an electrode rod and an electrode head end detachably mounted at the front end of the electrode rod, and the electrode rod is a hollow tube; the electrode rods of the two electrode bodies are mutually sleeved and axially slidable relative to each other, and the electrode head end of one group of electrode bodies is retracted and extended through a through hole arranged on the electrode head end of the other group of electrode bodies.

[0018] Furthermore, the driving member is a slider, a slider lever is provided on the slider, a slide groove is provided on the handle opposite to the slider lever, the slider lever extends out of the handle through the slide groove and can slide along the length direction of the slide groove, and the slider is fixedly connected to the electrode rod of one group of electrode bodies.

[0019] Furthermore, a slider positioning ridge is provided on one side of the slider, and two slots are provided on the inner side of the handle at intervals along the length direction of the handle. When the electrodes of one group of electrode bodies are fully extended, the slider positioning ridge on the slider cooperates with one of the slots; when the electrodes of the electrode bodies are fully retracted into the other group of electrode bodies, the slider positioning ridge on the slider cooperates with the other slot.

[0020] Furthermore, the electrode of the electrode body sleeved on the outside is plugged into the front end of the electrode rod through a metal insert, and at least one drip slit connected to its lumen is provided on the circumferential surface of the metal insert, and the drip slit is parallel to the axial direction of the metal insert and extends to the front end of the metal insert; an insulating hose is connected to the metal insert, and the end of the insulating hose passes through the inner cavity of the electrode rod of the electrode body into the handle, extends in the handle and extends out of the handle to be connected with an external liquid supply device.

[0021] Furthermore, the electrode head end of the electrode body is plugged into the front end of the electrode rod through a metal insert and can be rotated clockwise or counterclockwise at any angle along the electrode rod tube.

[0022] Furthermore, the insulating hose is composed of an inner tube and an outer tube which are interconnected, and the diameter of the inner tube is smaller than the inner cavity diameter of the electrode rod.

[0023] Furthermore, a circuit controller is provided in the handle, and the electrode body is electrically connected to the circuit controller.

[0024] Compared with the prior art, the technology of the present invention has the following advantages:

[0025] (1) The present invention is provided with two sets of mutually sleeved electrode bodies, and the electrode bodies can be coaxially telescoped, thereby realizing rapid switching between the two sets of electrode bodies, avoiding the complication of the operation process caused by frequent replacement of surgical electrodes with different functions, improving the surgical efficiency, and reducing the number of surgical electrodes with different functions during the operation, thereby reducing the surgical cost;

[0026] (2) The electrode rod and the electrode tip of the present invention are connected by a metal insert, which is connected to an insulating hose and has a dripping seam. The external liquid can pass through the insulating hose and the dripping seam to eventually form droplets at the electrode tip, thereby cooling the electrode of the electrode body and preventing instantaneous high temperature from being generated in human tissue.

[0027] (3) The electrode tip of the electrode body of the present invention can be rotated clockwise or counterclockwise at any angle to meet the needs of surgical sections at different orientations and angles, thereby improving the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Figure 1a and Figure 1b It is a schematic diagram of the structure of the surgical electrode of the present invention;

[0030] Figure 2 The schematic diagram of the structure of the driving member of the present invention is

[0031] Figure 3 It is a structural schematic diagram of the handle housing of the present invention;

[0032] Figure 4a and Figure 4b It is a cross-sectional view of two sets of electrode bodies when combined;

[0033] Figure 5 is a schematic diagram of the electrode rod structure of the second electrode body of the present invention;

[0034] Figure 6a and Figure 6b It is a schematic diagram of a further improved structure of the present invention.

[0035] Markings on the accompanying drawings: 1-handle, 1a-slot, 1b-arc-shaped groove, 2-circuit controller, 3-electric cutting button, 4-electric coagulation button, 5-cable, 6-through hole at the end of the handle, 7-through hole at the head end of the handle, 8-first electrode body, 8a-bean-shaped electrode, 8b-annular flange, 9-second electrode body, 9a-needle-shaped electrode, 9b-clamping part, 9c-water-permeable hole, 9d-blocking column, 9e-plate electrode, 10-slider, 10a-slider positioning ridge, 11-slider lever, 12-slide groove, 13-metal cannula, 13a-drip seam, 14-insulating hose, 15-plastic sleeve. DETAILED DESCRIPTION

[0036] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. The description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each embodiment of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0037] See also Figure 1a The present invention relates to a function-switching surgical electrode, which comprises a handle 1 and an electrode body connected to the handle 1. The handle 1 is held to move the electrode body to a patient's body to generate a high-frequency single flow for performing surgical operations.

[0038] See also Figure 1a The handle 1 is composed of two shells connected to each other front and back. The shells are made of plastic material and can also be made of other insulating materials according to actual needs. There is a accommodating space inside the shell, in which a circuit controller 2 is arranged. The circuit controller 2 is located on one side inside the shell. The circuit controller 2 is electrically connected to an electric cutting button 3, an electric coagulation button 4 and a cable 5. A through hole is provided on the shell opposite to the two buttons, and the two buttons protrude out of the shell through the through hole. The two ends of the shell in the length direction are respectively provided with a handle end through hole 6 and a handle head end through hole 7. The cable 5 extends inside the shell and extends out of the shell through the handle end through hole 6. One end of the electrode body in the length direction is the electrode end, and the other end is the connecting end. The connecting end of the electrode body passes through the handle head end through hole 7 into the shell, extends inside the shell and is electrically connected to the circuit controller 2.

[0039] When in use, the surgical electrode is connected to an electrode terminal of an external high-frequency generator through a cable 5, and the other electrode terminal of the high-frequency generator is connected to the human body. When the electro-cutting button 3 or the electro-coagulation button 4 is pressed, the electrode body and the circuit controller 2 are connected to form a conductive loop, thereby generating a high-frequency current between the electrode body and the human tissue and performing electro-cutting or electro-coagulation operations on the human tissue. The high-frequency generator and the circuit controller can both use existing technologies.

[0040] In order to avoid the inconvenience caused by frequent replacement of surgical electrodes of different shapes or functions during surgery, the present invention connects two sets of electrode bodies that are sleeved together on the handle 1, one set of electrode bodies is fixed, and the other set of electrode bodies can slide and retract.

[0041] See also Figure 1a , showing the specific structure of the surgical electrode implementation method of the present invention; in this embodiment, two groups of electrode bodies are provided, one group is a first electrode body 8 with a bean-shaped electrode, and the other group is a second electrode body 9 with a needle-shaped electrode 9a, and both groups of electrode bodies are made of metal material; the first electrode body 8 passes through the through hole at the head end of the handle and is fixedly connected to the inner side of the shell and is electrically connected to the circuit controller 2, the first electrode body 8 has a hollow tubular cavity, and a through hole connecting the tubular cavity is opened in the middle of the bean-shaped electrode 8a; the second electrode body 9 is movably sleeved in the first electrode body 8, and a driving member is connected to the second electrode body 9, and the driving member can drive the second electrode body 9 to move axially along the tubular cavity of the first electrode body 8, and the needle-shaped electrode 9a is retracted and extended through the through hole on the bean-shaped electrode 8a.

[0042] When in use, the driving member drives the second electrode body 9 to move axially along the tubular cavity of the first electrode body 8, driving the needle-shaped electrode 9a to move and extend out of the first electrode body 8 or retract into the first electrode body 8 through the perforation on the bean-shaped electrode 8a, thereby realizing rapid switching between the two electrode bodies to adapt to the surgical needs of different parts and improve surgical efficiency; and in the process of extension and retraction, the two groups of electrode bodies remain in contact with each other, and the circuit is continuously turned on, so that the corresponding electrode body after switching can quickly generate high-frequency current between the human tissue; in addition, the electrode body can also reduce the number of surgical electrodes with different functions equipped during surgery, reduce surgical costs, and alleviate the economic burden on patients; it should be noted that although the first electrode body 8 shown in Figure 1 adopts a bean-shaped electrode 8a and the second electrode body 9 adopts a needle-shaped electrode 9a, according to actual needs, the two groups of electrode bodies can also adopt electrodes of other shapes, as long as the electrodes of the second electrode body 9 are smaller than the electrodes of the first electrode body 8, for example: see Figure 1b , the first electrode body 8 adopts a bean-shaped electrode 8a, and the second electrode body 9 adopts a plate-shaped electrode 9e; at the same time, although Figure 1a and Figure 1bThe first electrode body 8 shown in the figure is fixedly arranged, and the second electrode body 9 is slidably arranged relative to the first electrode body 8. However, according to actual needs, as long as one group of electrode bodies can slide relative to another electrode body to form coaxial telescopic movement, the switching between the electrode bodies can be completed. For example: the second electrode body 9 is fixedly arranged, the first electrode body 8 is slidably arranged relative to the second electrode body 9, the driving member is connected to the first electrode body 8, and drives the first electrode body 8 to slide axially relative to the second electrode body 9.

[0043] The two groups of electrode bodies are made of metal material, both of which adopt a detachable structure or an integrally formed structure, and are composed of an electrode rod and an electrode head tightly inserted into the front end of the electrode rod; the electrode rod is a hollow tube, wherein the rear end of the electrode rod of the first electrode body 8 passes through the through hole 7 at the handle head end and an annular flange 8b is provided on the outer peripheral surface, and an arc-shaped groove 1b is provided on the inner side of the shell located on the rear side of the through hole 7 at the handle head end, and the annular flange 8b and the arc-shaped groove cooperate with each other, so that the electrode rod of the first electrode body 8 can be rotatably connected to the shell and electrically connected to the circuit controller 2; in addition, the inner diameter of the electrode rod of the first electrode body 8 is larger than the outer diameter of the electrode rod of the second electrode body 9, and the electrode rod of the second electrode body 9 can be movably sleeved in the electrode rod of the first electrode body 8, and the outer peripheral surface of the electrode rod of the second electrode body 9 is in contact with the inner peripheral surface of the electrode rod of the first electrode body 8.

[0044] See also Figure 2 and Figure 3 The driving member is a slider 10 made of plastic material. A slider lever 11 is provided on the slider 10. A slide groove 12 is provided on the shell opposite to the slider lever 11. The slider lever 11 extends out of the shell through the slide groove 12 and can slide along the length direction of the slide groove 12. The slider 10 is fixedly connected to the electrode rod of the second electrode body 9. By pushing the slider lever 11, the second electrode body 9 can be retracted and retracted, which is convenient for surgical operation; and a slider positioning ridge 10a is provided on one side of the slider 10, and two slots 1a are provided on the inner side of the shell at intervals along the length direction of the shell. When the needle electrode 9a of the second electrode body 9 is fully extended, the slider positioning ridge 10a on the slider 10 cooperates with one of the slots 1a. When the second electrode body 9 is fully extended, the slider positioning ridge 10a on the slider 10 cooperates with one of the slots 1a. When the needle electrode 9a of 9 is fully retracted into the first electrode body 8, the slider positioning ridge 10a on the slider 10 cooperates with another slot 1a. When the slider positioning ridge 10a cooperates with the slot 1a, a vibration will be generated, thereby providing the doctor with feedback that the electrode body has been switched into place, and preventing the electrode body from sliding during the operation; according to actual needs, the driving member can also adopt other structures to drive the second electrode body 9 to extend and retract. For example, a motor and a transmission member connected to the motor are installed in the shell, and the transmission member is driven by the motor to drive the second electrode body to extend and retract. The transmission member can be a gear set, a gear rack or a worm gear. As long as the rotational motion of the motor shaft can be converted into linear motion, the second electrode body 9 can be driven to extend and retract.

[0045] See also Figure 4a and Figure 5 The bean-shaped electrode 8a is plugged into the front end of the electrode rod of the first electrode body 8 through the metal insert 13. A plurality of drip slits 13a connected to the lumen of the metal insert 13 are provided on the circumferential surface of the metal insert 13. The number of drip slits 13a can be set according to actual needs, but at least one is provided; the drip slit 13a is parallel to the axial direction of the metal insert 13 and extends to the front end of the metal insert 13; two axially symmetrically arranged clamping parts 9b are extended from the front end of the electrode rod of the second electrode body 9, and the needle-shaped electrode 9a is clamped on the electrode rod of the second electrode body 9 through the clamping part 9b. A water-permeable hole 9c is provided at the rear end of the clamping part 9b. The inner cavity of the electrode rod of the second electrode body 9, the water-permeable hole 9c, the clamping part 9b and the first The gap between the inner walls of the electrode rod of the first electrode body 8, the gap between the needle electrode 9a and the inner wall of the metal cannula 13, and the dripping seam 13a are interconnected to form a water supply channel. An insulating hose 14 is inserted into the electrode rod of the second electrode body 9. The end of the insulating hose 14 extends out of the handle through the through hole 6 at the end of the handle to communicate with an external liquid supply device. The liquid supply device is an infusion bottle or an infusion bag. The insulating hose 14 is a plastic hose. According to actual conditions, it can also be a hose made of silicone, latex or other materials; a blocking column 9d is inserted between the two clamping parts 9b. The blocking column 9d is located on the front side of the water permeable hole 9c. The tail of the needle electrode 9a conflicts with the blocking column 9d, so that the needle electrode 9a moves axially; see Figure 4b The plate-shaped electrode 9e is also clamped on the electrode rod of the second electrode body 9 through the above-mentioned clamping portion 9b.

[0046] When in use, fill the infusion bottle with saline or other saline concentrations, and hang the infusion bottle at a high place. Due to the height difference, the saline flows into the water supply channel through the insulating hose and flows in the direction of the arrow in the attached figure, seeping out from the dripping seam 13a to form droplets, which drip onto the electrode head end of the electrode body, preventing instantaneous high temperature from being generated in the human tissue during the surgical operation, significantly reducing the temperature of the electrode, avoiding the formation of shallow eschar and affecting the immediate hemostasis and coagulation effects, and at the same time, forming a liquid electrode, shrinking tissue collagen to permanently seal the wound, and achieving excellent long-term hemostasis and coagulation effects. According to actual needs, other liquid supply devices may be used to replace the infusion bottle or infusion bag to supply liquid, such as a liquid supply pump with a saline container. The liquid supply pump can not only actively extract saline and maintain a stable liquid supply pressure, does not need to be placed in a high place, but also can adjust the flow rate. It should be noted that although in this embodiment, dripping is achieved by providing a drip slit 13a on the circumference of the metal insert tube 13, according to actual needs, other shapes of drip channels, such as drip holes, may also be provided on the circumference of the metal insert tube 13.

[0047] As a further improvement, the insulating hose 14 consists of an inner tube and an outer tube, wherein the diameter of the inner tube is smaller than the inner cavity diameter of the electrode rod and is located inside the handle 1, while the outer tube is located outside the handle 1 and is interconnected with the inner tube through a two-way connector. When connecting an external liquid supply device, it is only necessary to replace the outer tube corresponding to the interface of the liquid supply device, thereby avoiding the overall replacement of the insulating hose and improving the versatility of the surgical electrode.

[0048] See also Figure 6a and Figure 6b As a further improvement, the electrode tip is connected to the front end tube of the electrode rod of the first electrode body 8 through a metal insert 13, and a plastic sleeve 15 is sleeved on the end of the metal insert 13. The plastic sleeve 15 is provided with anti-slip grooves, which can increase the friction of the hand and also play an insulating role. It is convenient to manually rotate the electrode tip clockwise or counterclockwise to adapt to the needs of surgical sections in different directions and angles, and it is also convenient to manually replace electrode tips of other shapes and functions.

[0049] As a further improvement, the insulating hose 14 inside the handle 1 is provided with a bent buffer section, so that when the electrode rod is extended or retracted, the insulating hose 14 can be retracted or retracted synchronously, thereby preventing the insulating hose 14 from being in a tight state and being unable to retract or be broken when the electrode rod is extended.

[0050] The above embodiments of the present invention are not intended to limit the protection scope of the present invention, and the implementation modes of the present invention are not limited thereto. All other modifications, replacements or changes made to the above structures of the present invention based on the above contents of the present invention, in accordance with common technical knowledge and customary means in the art, without departing from the above basic technical ideas of the present invention, should fall within the protection scope of the present invention.

Claims

1. A switchable surgical electrode, comprising a handle, characterized in that: The handle is connected to two sets of electrode bodies which are sleeved with each other, and one set of electrode bodies can slide axially relative to the other set of electrode bodies to form coaxial telescopic movement through the drive of the driving member, so that the two sets of electrode bodies can switch with each other; The electrode body comprises an electrode rod and an electrode head end detachably mounted at the front end of the electrode rod, the electrode rod is a hollow tube, and the electrode rods of the two electrode bodies are sleeved with each other and can slide axially with each other; The two groups of electrode bodies are respectively a first electrode body and a second electrode body. The second electrode body is movably sleeved in the first electrode body. The first electrode body is plugged into the front end of the electrode rod of the first electrode body through a metal insert. A plurality of drip slits connected to the lumen are provided on the circumferential surface of the metal insert. The front end of the electrode rod of the second electrode body is extended with two axially symmetrical clamping parts. The electrode head end of the second electrode body is clamped on the electrode rod of the second electrode body through the clamping part. A water-permeable hole is provided at the rear end of the clamping part. The inner cavity of the electrode rod of the second electrode body, the water-permeable hole, the gap between the clamping part and the inner wall of the electrode rod of the first electrode body, the gap between the second electrode body and the inner wall of the metal insert, and the drip slit are connected to each other to form a water supply channel. An insulating hose is inserted into the electrode rod of the second electrode body. The end of the insulating hose extends out of the handle for connecting with an external liquid supply device.

2. The switchable surgical electrode according to claim 1, characterized in that: The driving member is a slider, on which a slider lever is provided, and a slide groove is provided on a handle opposite to the slider lever. The slider lever extends out of the handle through the slide groove and can slide along the length direction of the slide groove. The slider is fixedly connected to the electrode rod of one group of electrode bodies.

3. The switchable surgical electrode according to claim 2, characterized in that: A slider positioning ridge is provided on one side of the slider, and two slots are provided on the inner side of the handle and are spaced apart along the length direction of the handle. When the electrodes of one group of electrode bodies are fully extended, the slider positioning ridge on the slider cooperates with one of the slots; when the electrodes of the electrode bodies are fully retracted into the other group of electrode bodies, the slider positioning ridge on the slider cooperates with the other slot.

4. The switchable surgical electrode according to claim 1, characterized in that: The electrode head end of the electrode body is plugged into the front end of the electrode rod through a metal insert and can rotate clockwise or counterclockwise at any angle along the electrode rod tube.

5. The switchable surgical electrode according to claim 4, characterized in that: The insulating hose consists of an inner tube and an outer tube which are interconnected, and the diameter of the inner tube is smaller than the inner cavity diameter of the electrode rod.

6. The switchable surgical electrode according to any one of claims 1 to 5, characterized in that: A circuit controller is arranged in the handle, and the electrode body is electrically connected to the circuit controller.

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