Medical point discharge electrode knife

Abstract

The invention discloses a medical point discharge electrode knife, and belongs to the technical field of electrode knives. The replacing mechanism comprises a clamping ring arranged at one end of the operating handle and is used for locking the replaced tool bit; the replacement mechanism is further provided with a tool bit assembly, the tool bit assembly comprises a limiting block fixedly connected to the tool bit and is used for limiting the tool bit, the replacement mechanism composed of an outer ring, a clamping ring, a fixing spring and the like is arranged, and when the tool bit is replaced, only the outer ring with anti-skid lines needs to be screwed, so that an unlocking groove of the clamping ring is aligned with the tool bit limiting block, and then disassembly and assembly can be completed; after the outer ring is loosened, the fixing spring can drive the clamping ring to reset, stable locking of the tool bit is achieved through dislocation of the unlocking groove and the limiting block, tungsten alloy tool bits (such as needle-shaped, blade-shaped, U-shaped needles or other ring-shaped tools) of different forms can be rapidly replaced to meet different operation requirements, the tool bits can be prevented from loosening in the operation, and the operation efficiency is improved. And the safety and the smoothness of the surgical operation are ensured.

Description

Technical Field

[0001] This invention belongs to the field of electrode knife technology, specifically a medical-grade discharge electrode knife. Background Technology

[0002] Against the backdrop of rapid advancements in modern medical technology, surgical procedures are continuously moving towards minimally invasive, precise, and efficient methods, placing increasingly stringent demands on the performance, safety, and adaptability of surgical instruments. High-frequency electrosurgical instruments, as core tools for tissue cutting and coagulation in surgery, directly impact the overall quality of the surgery and the patient's postoperative recovery through technological iteration. Among them, the advanced medical discharge electrode knife, with its high current density characteristics at the tip of a tungsten alloy blade, can generate a strong electric field and produce a tip discharge effect within a very small area, converting electrical energy into localized high temperatures of 200℃-1000℃. This enables precise separation of diseased tissue and rapid closure of blood vessels, with thermal damage limited to a region of only a few micrometers around the tip. This unique advantage gives it an irreplaceable position in delicate surgical fields such as neurosurgery, ophthalmology, otolaryngology, and plastic surgery.

[0003] Traditional medical-grade electrosurgical excision devices are mostly one-piece structures with fixed blade shapes, making it impossible to flexibly switch them according to the progress of the surgery. As a result, a complex surgery often requires multiple electrode devices of different specifications, which not only significantly increases the procurement and management costs of medical consumables, but also prolongs the operation time due to frequent instrument changes during the operation, while increasing the risk of cross-infection during instrument handover. Summary of the Invention

[0004] The purpose of this invention is to provide a medical-grade advanced discharge electrode knife to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a medical tip discharge electrode knife, comprising:

[0006] Operating handle, including the cutting head;

[0007] The replacement mechanism includes a retaining ring disposed at one end of the operating handle for locking the replaced cutter head; the replacement mechanism is also provided with a cutter head assembly, including a limiting block fixedly disposed on the cutter head for limiting the cutter head, and the limiting block abuts against one side of the retaining ring.

[0008] The conductive mechanism includes a conductive post disposed at one end of the cutter head for supplying current to the cutter head.

[0009] As a further preferred embodiment of this technical solution: the replacement mechanism further includes:

[0010] A fixed block is fixedly arranged at one end of the operating handle to support the cutter head, and a retaining ring is rotatably connected inside the fixed block;

[0011] The outer ring is fixedly arranged on the retaining ring by a cylinder, and the outer ring is rotatably connected to the outer wall of the fixed block;

[0012] A chute is provided on a fixed block, and the cylinder on the outer ring is slidably connected in the chute;

[0013] The spring is fixed at one end to the inner wall of the fixed block, and at the other end to one end of the retaining ring.

[0014] As a further preferred embodiment of this technical solution: the outer wall of the outer ring is provided with anti-slip texture.

[0015] As a further preferred embodiment of this technical solution: the cutter head assembly further includes:

[0016] A limiting groove is formed on the inner wall of the fixed block to limit the cutter head, and the limiting block is slidably connected in the limiting groove;

[0017] The unlocking slot is located on the retaining ring and is used to lock the cutter head.

[0018] As a further preferred embodiment of this technical solution: the unlocking slot is provided in two sets, and the limiting block is provided in two sets.

[0019] As a further preferred embodiment of this technical solution: the conductive mechanism further includes:

[0020] A conductive sheet is used to transmit current to a conductive post, and the conductive post abuts against one side of the conductive sheet;

[0021] A receiving groove is provided inside a fixed block to accommodate a conductive sheet, and the conductive sheet is slidably connected inside the receiving groove.

[0022] The return spring has one end fixedly attached to one side of the conductive sheet and the other end fixedly attached to the fixing block.

[0023] As a further preferred embodiment of this technical solution: the reset spring is arranged in the receiving groove.

[0024] As a further preferred embodiment of this technical solution: the conductive pillar is made of copper, and the conductive sheet is made of copper.

[0025] As a further preferred embodiment of this technical solution: the operating handle is provided with a switch button, the switch button is electrically connected to a connecting wire, one end of the connecting wire is electrically connected to a plug, the switch button is electrically connected to a conductive sheet through a wire, and the connecting wire passes through the operating handle.

[0026] As a further preferred embodiment of this technical solution, the material of the cutting head is tungsten alloy.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] 1. In this invention, a replacement mechanism consisting of an outer ring, a retaining ring, and a fixing spring is provided. When replacing the blade head, it is only necessary to twist the outer ring with anti-slip texture to align the retaining ring unlocking groove with the blade head limiting block to complete the disassembly and assembly. After the outer ring is released, the fixing spring can drive the retaining ring to reset. The blade head is securely locked by the misalignment of the unlocking groove and the limiting block. This not only allows for the quick replacement of tungsten alloy blade heads of different shapes (such as needle-shaped, blade-shaped, U-shaped needle, or other ring-shaped, etc.) to adapt to different surgical needs, but also prevents the blade head from loosening during surgery, ensuring the safety and smoothness of the surgical operation.

[0029] 2. In this invention, the conductive mechanism adopts a design that combines copper conductive pillars and conductive sheets. When the blade is installed, the conductive pillars will squeeze the conductive sheets and compress the return spring. The rebound force of the return spring can ensure that the conductive sheets are always tightly pressed against the conductive pillars, forming a stable current path and avoiding current interruption or poor contact. At the same time, the current can be stably delivered to the blade in a single pole or bipolar manner, ensuring the stable performance of the tip discharge effect, allowing doctors to accurately complete tissue cutting and coagulation operations, and improving the precision of the surgery.

[0030] 3. In this invention, the operating handle is made of highly insulating ABS plastic, which can effectively prevent current leakage and ensure the safety of medical staff during operation. The handle can also be equipped with anti-slip texture to improve grip stability and reduce the probability of operation errors. In addition, the blade can be disassembled and replaced separately, eliminating the need to discard the entire electrode blade, which greatly reduces the overall cost of medical consumables and also reduces the generation of medical waste, combining practicality and economy. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of a medical-grade discharge electrode knife according to the present invention;

[0032] Figure 2 This invention relates to a localized structural explosion of a medical-grade advanced discharge electrode knife. Figure 1 ;

[0033] Figure 3 This invention relates to a localized structural explosion of a medical-grade advanced discharge electrode knife. Figure 2 ;

[0034] Figure 4 This is a partial structural cross-section of a medical-grade advanced discharge electrode knife according to the present invention. Figure 1 ;

[0035] Figure 5 This is a partial structural cross-section of a medical-grade advanced discharge electrode knife according to the present invention. Figure 2 ;

[0036] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0037] Explanation of reference numerals in the attached diagram: 1. Operating handle; 5. Switch button; 6. Connecting cable; 7. Plug;

[0038] Replacement mechanism: 201, retaining ring; 202, fixing block; 203, outer ring; 204, slide groove; 205, fixing spring;

[0039] Cutter head assembly: 206, cutter head; 207, limit block; 208, limit groove; 209, unlocking groove;

[0040] Conductive structure: 301, conductive post; 302, conductive sheet; 303, receiving groove; 304, return spring. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0043] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] Example

[0045] Please see Figures 1-6 As shown, the present invention provides a technical solution: a medical-grade advanced discharge electrode knife, comprising:

[0046] Operating handle 1, including cutter head 206;

[0047] The replacement mechanism includes a retaining ring 201 disposed at one end of the operating handle 1 for locking the replaced cutter head 206; the replacement mechanism is also provided with a cutter head assembly, including a limiting block 207 fixedly disposed on the cutter head 206 for limiting the cutter head 206, and the limiting block 207 abuts against one side of the retaining ring 201.

[0048] The conductive mechanism includes a conductive post 301 disposed at one end of the cutter head 206 for supplying current to the cutter head 206.

[0049] It should be noted that the outer surface of the operating handle 1 may also be provided with anti-slip texture to increase the friction between the operating handle 1 and the operator's hand.

[0050] The operating handle 1 is made of ABS plastic to improve user safety.

[0051] It should also be understood that the blade 206 can be blade-shaped, needle-shaped, or any other desired shape.

[0052] In this embodiment, the replacement mechanism further includes: a fixed block 202, which is fixedly arranged at one end of the operating handle 1 to support the cutter head 206, and a retaining ring 201 is rotatably connected to the fixed block 202; an outer ring 203, which is fixedly arranged on the retaining ring 201 by a cylinder, and the outer ring 203 is rotatably connected to the outer wall of the fixed block 202; a sliding groove 204, which is formed on the fixed block 202, and the cylinder on the outer ring 203 is slidably connected to the sliding groove 204; and a fixed spring 205, which is fixedly arranged at one end on the inner wall of the fixed block 202 and at the other end on one end of the retaining ring 201.

[0053] It should be noted that the retaining ring 201 is not completely circular in shape, and the fixing spring 205 is located at the opening of the retaining ring 201.

[0054] In this embodiment, specifically: the outer wall of the outer ring 203 is provided with anti-slip texture.

[0055] In this embodiment, specifically: the cutter head assembly further includes: a limiting groove 208, which is formed and arranged on the inner wall of the fixing block 202 to limit the cutter head 206, and the limiting block 207 is slidably connected in the limiting groove 208; and an unlocking groove 209, which is formed and arranged on the retaining ring 201 to lock the cutter head 206.

[0056] It should also be understood that when the cutter head 206 is replaced, the outer ring 203 is turned, and the cylinder on the outer ring 203 slides in the slide groove 204. At the same time, the retaining ring 201 rotates in the fixing block 202 and pulls the fixing spring 205. When the two sets of unlocking grooves 209 on the retaining ring 201 correspond to the two sets of limiting blocks 207, the cutter head 206 can be pulled out for replacement. After replacement, the limiting blocks 207 on the limiting ring 206 are slid onto the limiting groove 208. When the limiting blocks 207 pass the retaining ring 201, the outer ring 203 is released. The retaining ring 201 is rotated by the reverse pull of the fixing spring 205. At this time, the unlocking grooves 209 are misaligned with the limiting blocks 207, thereby fixing the cutter head 206.

[0057] In this embodiment, specifically: there are two sets of unlocking slots 209 and two sets of limiting blocks 207.

[0058] In this embodiment, specifically: the conductive mechanism further includes: a conductive sheet 302 for transmitting current to the conductive post 301, and the conductive post 301 abutting against one side of the conductive sheet 302; a receiving groove 303, which is formed and arranged in the fixing block 202 for receiving the conductive sheet 302, and the conductive sheet 302 is slidably connected in the receiving groove 303; and a reset spring 304, one end of which is fixedly arranged on one side of the conductive sheet 302, and the other end of which is fixedly arranged on the fixing block 202.

[0059] When the replacement blade 206 is inserted, the conductive post 301 on one side of the blade 206 abuts against the side of the conductive sheet 302. As the blade 206 is inserted, the conductive post 301 squeezes the conductive sheet 302, and the conductive sheet 302 compresses the return spring 304 until the replaced blade 206 is locked. The rebound action of the return spring 304 ensures that the conductive sheet 302 always abuts against the conductive post 301, thus ensuring the stability of the power supply.

[0060] In this embodiment, specifically, the reset spring 304 is arranged in the receiving groove 303.

[0061] In this embodiment, specifically: the conductive post 301 is made of copper, and the conductive sheet 302 is made of copper.

[0062] In this embodiment, specifically: the operating handle 1 is provided with a switch button 5, the switch button 5 is electrically connected to a connecting wire 6, one end of the connecting wire 6 is electrically connected to a plug 7, the switch button 5 is electrically connected to the conductive sheet 302 through a wire, and the connecting wire 6 passes through the operating handle 1.

[0063] This device is used by plugging the plug 7 into the socket on the external high-frequency electrosurgical unit.

[0064] In this embodiment, specifically, the material of the cutter head 206 is tungsten alloy.

[0065] Working principle or structural principle: During operation, the installation and locking of the cutter head 206 are completed by changing the mechanism. Specifically, the outer ring 203 is turned so that the cylinder on the outer ring 203 slides in the groove 204 of the fixed block 202, which drives the retaining ring 201 to rotate and stretches the fixing spring 205. After the unlocking groove 209 of the retaining ring 201 corresponds with the limiting block 207 of the cutter head 206, the cutter head 206 is inserted, so that the limiting block 207 slides into the limiting groove 208 of the fixed block 202. After the outer ring 203 is released, the fixing spring 205 drives the retaining ring 201 to reset. The unlocking groove 209 and the limiting block 207 are misaligned to achieve a stable lock of the cutter head 206 and prevent it from loosening during the operation.

[0066] The electrode plug 7 is then connected to the external high-frequency electrosurgical unit. The current is transmitted to the switch button 5 on the operating handle 1 via the connecting wire 6, and then to the conductive plate 302 in the receiving groove 303 of the fixing block 202 via the wire. After the blade 206 is installed in place, its end conductive post 301 will squeeze the conductive plate 302 and compress the return spring 304. The rebound force of the return spring 304 ensures that the conductive plate 302 and the conductive post 301 are in close contact, forming a stable current path.

[0067] When the doctor presses the switch button 5 on the handle, a high-frequency current is delivered to the tungsten alloy blade tip 206 via the conductive sheet 302 and the conductive post 301. Because the tip surface of the blade tip 206 (especially the needle-shaped blade tip) is extremely small, the current is highly concentrated here to form a local strong electric field, which breaks down the tiny gap between the blade tip 206 and the tissue to produce a tip discharge effect. During the discharge process, electrical energy is converted into a high temperature of 200℃-1000℃, which can not only achieve precise cutting of diseased tissue, but also quickly coagulate tissue proteins to achieve intraoperative hemostasis. At the same time, because the current density decreases rapidly with distance, only the tissue around the tip of the blade tip 206 is affected, thus realizing a minimally invasive surgical operation.

[0068] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0069] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

[0070] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A medical-grade advanced discharge electrode knife, characterized in that: include: Operating handle (1), including cutter head (206); The replacement mechanism includes a retaining ring (201) arranged at one end of the operating handle (1) for locking the replaced cutter head (206); the replacement mechanism is also provided with a cutter head assembly, including a limiting block (207) fixedly arranged on the cutter head (206) for limiting the cutter head (206), and the limiting block (207) abuts against one side of the retaining ring (201); The conductive mechanism includes a conductive post (301) disposed at one end of the cutter head (206) for supplying current to the cutter head (206).

2. The medical tip discharge electrode knife according to claim 1, characterized in that: The replacement mechanism also includes: A fixing block (202) is fixedly arranged at one end of the operating handle (1) to support the cutter head (206), and a retaining ring (201) is rotatably connected inside the fixing block (202); The outer ring (203) is fixedly arranged on the retaining ring (201) by a cylinder, and the outer ring (203) is rotatably connected to the outer wall of the fixed block (202); A groove (204) is provided on a fixed block (202), and a cylinder on an outer ring (203) is slidably connected in the groove (204); The fixed spring (205) is fixed at one end to the inner wall of the fixed block (202) and at the other end to one end of the retaining ring (201).

3. The medical tip discharge electrode knife according to claim 2, characterized in that: The outer wall of the outer ring (203) is provided with anti-slip texture.

4. The medical tip discharge electrode knife according to claim 3, characterized in that: The cutter head assembly also includes: A limiting groove (208) is provided on the inner wall of the fixing block (202) to limit the cutting head (206), and the limiting block (207) is slidably connected in the limiting groove (208); An unlocking slot (209) is provided on a retaining ring (201) for locking the cutter head (206).

5. A medical-grade discharge electrode knife according to claim 4, characterized in that: The unlocking slot (209) is provided in two sets, and the limiting block (207) is provided in two sets.

6. A medical tip discharge electrode knife according to claim 5, characterized in that: The conductive mechanism further includes: The conductive sheet (302) is used to transmit current to the conductive post (301), and the conductive post (301) abuts against one side of the conductive sheet (302); A receiving groove (303) is provided in the fixed block (202) for accommodating the conductive sheet (302), and the conductive sheet (302) is slidably connected in the receiving groove (303); The reset spring (304) has one end fixedly arranged on one side of the conductive sheet (302) and the other end fixedly arranged on the fixing block (202).

7. A medical-grade discharge electrode knife according to claim 6, characterized in that: The return spring (304) is arranged in the receiving groove (303).

8. A medical tip discharge electrode knife according to claim 7, characterized in that: The conductive pillar (301) is made of copper, and the conductive sheet (302) is made of copper.

9. A medical tip discharge electrode knife according to claim 8, characterized in that: The operating handle (1) is provided with a switch button (5), and a connecting wire (6) is electrically connected to the switch button (5). One end of the connecting wire (6) is electrically connected to a plug (7). The switch button (5) is electrically connected to the conductive sheet (302) through a wire, and the connecting wire (6) passes through the operating handle (1).

10. A medical tip discharge electrode knife according to claim 9, characterized in that: The cutter head (206) is made of tungsten alloy.

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