Surgical electrode device

Abstract

The utility model relates to a surgical electrode device which is provided with a far end farther away from an operator during use and a near end closer to the operator during use, and is characterized in that the surgical electrode device comprises an electrode assembly which is provided with an electrode rod and a tool bit fixed at the far end of the electrode rod; the electrode assembly can be detachably connected to the handle assembly, in the connected state of the electrode assembly and the handle assembly, the electrode assembly and the handle assembly are axially fixed to each other, and the electrode assembly can rotate relative to the handle assembly. The device has the advantages that the electrode assembly can be detachably connected to the handle assembly, electrode assemblies with different cutter heads can be conveniently and rapidly replaced in the operation, meanwhile, due to the fact that the electrode assembly can rotate relative to the handle assembly, the orientation of the cutter heads can be freely adjusted in the operation, and the cutter heads do not need to be rotated by uncomfortably rotating the whole wrist.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically to a surgical electrode device. Background Technology

[0002] Laparoscopic surgery is a procedure performed using a laparoscope and related surgical instruments. During the procedure, a cold light source provides illumination, and the laparoscope (3-10mm in diameter) is inserted into the abdominal cavity. Digital imaging technology transmits images captured by the laparoscope via fiber optics to a signal processing system, where they are displayed in real-time on a monitor. The surgeon analyzes the patient's condition by viewing images of the organs from different angles on the monitor and performs the surgery using specialized laparoscopic instruments. Laparoscopic surgery often employs a 2-4 port approach, with one incision made in the navel, avoiding long scars on the abdominal cavity. After recovery, only 1-3 small scars of 0.5-1 cm remain on the abdominal cavity. It is considered a minimally invasive and less painful procedure, sometimes referred to as "keyhole" surgery. The development of laparoscopic surgery has reduced the pain of traditional open surgery, shortened recovery time, and relatively lowered patient costs.

[0003] In laparoscopic surgery, surgeons need to cut open the surgical area, stop bleeding and coagulate the wound, aspirate surgical waste, and clean up unseen surgical areas—a combination of these procedures. However, current laparoscopic surgery often involves repeatedly alternating various single-function surgical instruments such as ablation electrodes and irrigation suction devices. This increases the complexity of the procedure, prolongs the surgical time, and the frequent switching of instruments can also reduce surgical quality and increase postoperative risks.

[0004] In addition, replacing the entire instrument during surgery to change the blade tip is expensive, and changing the blade tip orientation by rotating the entire instrument with the wrist during surgery is also laborious. Utility Model Content

[0005] The purpose of this invention is to provide a surgical electrode device that can solve at least one of the problems mentioned above.

[0006] To achieve the above objectives, this utility model proposes a surgical electrode device, which has a distal end that is further away from the operator during use and a proximal end that is closer to the operator during use. The surgical electrode device comprises:

[0007] Electrode assembly, the electrode assembly having an electrode rod and a cutter head fixed to the distal end of the electrode rod; and

[0008] A handle assembly, wherein the electrode assembly is detachably connected to the handle assembly, wherein, in the connected state of the electrode assembly and the handle assembly, the electrode assembly and the handle assembly are axially fixed to each other, while the electrode assembly is rotatable relative to the handle assembly.

[0009] Beneficial effects include: the electrode assembly can be detachably connected to the handle assembly, facilitating quick replacement of different electrode assemblies during surgery; and because the electrode assembly can rotate relative to the handle assembly, it allows for free adjustment of the blade orientation during surgery simply by rotating the electrode assembly, without the need for uncomfortable rotation of the entire wrist to rotate the blade.

[0010] Advantageously, the electrode assembly has an electrode assembly connector fixed to the proximal end of the electrode rod, and the handle assembly has a handle assembly connector at its distal end. In the connected state of the electrode assembly and the handle assembly, the electrode assembly connector and the handle assembly connector are axially nested within each other. One of the electrode assembly connectors and the handle assembly connector has at least one radially protruding locking protrusion, while the other has a locking groove that engages with the locking protrusion. The locking groove is open towards the locking protrusion to allow the locking protrusion to engage with it, thereby axially locking the electrode assembly and the handle assembly together. The locking groove extends circumferentially to allow the locking protrusion to move circumferentially relative to it, thereby allowing the electrode assembly to rotate relative to the handle assembly. This structural design allows for simple relative rotation of the electrode assembly and the handle assembly even when axially locked, to adjust the cutter head orientation.

[0011] Advantageously, a disassembly ring extends between the electrode assembly connector and the handle assembly connector. The disassembly ring has at least one unlocking hole on its peripheral wall through which the locking protrusion passes. The locking protrusion, after passing through the unlocking hole, can extend into a locking groove. By axially moving the disassembly ring relative to the locking protrusion, the locking protrusion can be driven radially away from the locking groove. This disassembly ring allows for easy axial unlocking of the electrode assembly from the handle assembly, thereby enabling quick replacement of electrode assemblies of different specifications.

[0012] Advantageously, the locking protrusion is disposed on the elastic tab, which undergoes radial elastic deformation when the locking protrusion moves radially. The elastic tab enables radial movement of the locking protrusion under radial compression and automatic return to its original position after the compression is released.

[0013] Advantageously, the locking protrusion has an unlocking ramp, which radially presses the locking protrusion via the unlocking ramp when the disassembly ring is moved axially. The unlocking ramp allows for easy radial movement of the locking protrusion under radial pressure.

[0014] Advantageously, the locking groove is configured as an annular groove. This allows for connection between the electrode assembly and the handle assembly without requiring special circumferential orientation; axial alignment is sufficient. Furthermore, the cutter head can be rotated arbitrarily in 360 degrees after connection.

[0015] Advantageously, the electrode rod has a radially protruding disc-shaped flange at its proximal end, and the handle assembly has an electrical adapter at its distal end that is electrically connected to the electrode wire. When the electrode assembly and handle assembly are connected, the electrical adapter abuts against the disc-shaped flange at its distal end to make an electrical connection with the conductive electrode rod. Furthermore, when the electrode assembly rotates relative to the handle assembly, the electrical adapter maintains sliding contact on the disc-shaped flange. This ensures electrical contact between the electrode wire and the electrode rod regardless of the angle to which the electrode assembly and handle assembly are rotated while connected.

[0016] Advantageously, the electrical adapter has a distal movable portion, a proximal fixed portion electrically connected to the electrode wire, and an elastic member capable of pressing the movable portion distally. In the connected state of the electrode assembly and handle assembly, the movable portion contacts the disc-shaped flange and is pressed toward the disc-shaped flange by the elastic member. In the disassembled state of the electrode assembly and handle assembly, the movable portion is pressed distally by the elastic member further away from the fixed portion. Here, the pressing action of the elastic member ensures electrical contact between the movable portion, or the electrical adapter, and the disc-shaped flange.

[0017] Advantageously, the fixing part at least partially forms a receiving cavity, the elastic element is disposed in the receiving cavity, and the moving part can be accommodated in the receiving cavity more and less by movement.

[0018] Advantageously, the electrode assembly has a protective sleeve fitted onto the electrode rod, the protective sleeve being axially movable relative to the electrode rod between an extended position covering the cutter head and a retracted position exposing the cutter head.

[0019] Advantageously, the protective sleeve is provided with an actuation mechanism fixed to the protective sleeve and a guide cylinder for guiding the axial movement of the actuation mechanism. The actuation mechanism has a push-pull handle with a cylindrical body disposed in the guide cylinder and a side ear extending laterally from the guide cylinder. The protective sleeve is fixedly embedded in the cylindrical body with its proximal end therein.

[0020] Advantageously, the actuation mechanism has a retaining ring that is embedded within the cylindrical body of the push-pull handle, and a protective sleeve passes through the retaining ring and stops against the proximal end face of the retaining ring with its proximal flange.

[0021] Advantageously, the proximal flange of the protective sleeve abuts against a sealing ring on the proximal side, which is fitted onto the electrode rod.

[0022] Advantageously, a ball bearing assembly is provided on one of the cylindrical body and the guide tube, while a distal recess and a proximal recess are provided on the other. When the push-pull handle moves to the extended and retracted positions within the guide tube, the balls of the ball bearing assembly enter the distal and proximal recesses, respectively. Here, the sound and vibration of the balls entering the recesses are noticeable to the operator, effectively indicating that the protective sleeve has been moved to the extended or retracted position. Furthermore, the ball bearing assembly ensures a damped feel and positional feedback during the extension and retraction of the protective sleeve.

[0023] Advantageously, a ball bearing assembly is provided on the cylindrical body, the cylindrical portion of which passes successively through overlapping holes provided on the cylindrical body and the retaining ring to secure the cylindrical body and the retaining ring to each other. Thus, the ball bearing assembly not only achieves the aforementioned reminder function, but also simultaneously prevents relative movement between the cylindrical body and the retaining ring.

[0024] Advantageously, a suction switch is provided on the handle assembly, the suction switch comprising a bracket and a roller capable of rolling within the bracket, with a suction tube extending between the bracket and the roller, wherein the roller is movable between a closed position, a suction position, and a smoking position located between the two. Thus, in addition to its closing and suction functions, the suction switch can also specifically provide a smoking function when smoking is required, in order to remove smoke generated during the coagulation process, ensure a clear surgical field, and improve surgical quality. Here, "smoke" should be broadly understood as smoke formed by floating microparticles, such as fumes or water mist generated by electrocoagulation.

[0025] Advantageously, guide grooves for guiding rollers are provided on both sides of the bracket. An inclined surface extending from the guide groove is provided at a position corresponding to the closed position, and / or a slot extending perpendicular to the guide groove is provided at a position corresponding to the smoking position. Both the inclined surface and the slot serve to guide the operator to the corresponding position, and the inclined surface also prevents the rollers from accidentally leaving the closed position.

[0026] Advantageously, a flushing switch is provided on the handle assembly, which is electrically connected to the flushing pump and can control the power of the flushing pump. The combination of the flushing switch and the flushing pump allows for a stable supply of water pressure and flow rate at the selected setting from the saline bag (bottle). Attached Figure Description

[0027] The present invention will now be explained in more detail with reference to the accompanying drawings and embodiments, but the present invention is not limited to the embodiments described in the drawings and detailed below. The drawings are as follows:

[0028] Figure 1a This is a schematic perspective view of a surgical electrode device according to one embodiment of the present invention;

[0029] Figure 1b yes Figure 1a A schematic top view of a surgical electrode device;

[0030] Figure 1c yes Figure 1b A schematic cross-sectional view of the surgical electrode device at section line AA;

[0031] Figure 1d yes Figure 1c A partial enlarged view of the surgical electrode device in the image;

[0032] Figure 2a yes Figure 1a A schematic side view of the electrode assembly of a surgical electrode device, with the protective sleeve in the retracted position;

[0033] Figure 2b yes Figure 1a A schematic longitudinal sectional view of the electrode assembly of a surgical electrode device, with the protective sleeve in the extended position;

[0034] Figure 3 yes Figure 2a A schematic perspective view of the distal end of the electrode assembly, in which the protective sleeve is visible;

[0035] Figure 4 yes Figure 2a Another schematic perspective view of the distal end of the electrode assembly, with the protective sleeve hidden;

[0036] Figure 5a yes Figure 2a A schematic three-dimensional view of the proximal end of the electrode assembly in the image;

[0037] Figure 5b yes Figure 2a A schematic perspective longitudinal sectional view of the proximal end of the electrode assembly in the image;

[0038] Figure 5c yes Figure 2a A schematic side longitudinal sectional view of the proximal end of the electrode assembly in the figure;

[0039] Figure 6 yes Figure 2a A schematic perspective longitudinal sectional view of the protective sleeve of the electrode assembly and the proximal end of its actuation mechanism.

[0040] Figure 7 yes Figure 2a A schematic perspective view of the proximal end of the electrode assembly, with the guide tube omitted;

[0041] Figure 8a yes Figure 1aA schematic perspective longitudinal sectional view of a surgical electrode device at the connection between the electrode assembly and the handle assembly, showing a tee connector;

[0042] Figure 8b yes Figure 1a Another schematic perspective longitudinal sectional view of the surgical electrode device at the connection between the electrode assembly and the handle assembly;

[0043] Figure 9a yes Figure 1a A schematic cross-sectional view of a surgical electrode device at the connection between the electrode assembly and the handle assembly;

[0044] Figure 9b yes Figure 9a A partial magnified view of the view, showing only the handle assembly connector and the electrode assembly connector;

[0045] Figure 10 yes Figure 1a A partial three-dimensional view of a surgical electrode device, with the upper shell omitted;

[0046] Figure 11 This is a partial 3D view of the handle assembly, omitting the top shell;

[0047] Figure 12a This is a magnified 3D view of the handle assembly connector.

[0048] Figure 12b This is a side view of the handle assembly connector.

[0049] Figure 12c yes Figure 12b A cross-sectional view at the cutting line EE;

[0050] Figure 12d yes Figure 12b A cross-sectional view at the cutting line FF;

[0051] Figure 13a This is a 3D view of the disassembly ring of the handle assembly;

[0052] Figure 13b This is a side view of the disassembly ring of the handle assembly;

[0053] Figure 13c yes Figure 13b A cross-sectional view of the disassembly ring at section line CC;

[0054] Figure 14 yes Figure 1b A partial sectional view and a further enlarged partial view of the surgical electrode device, wherein the movable part of the electrical adapter is shown in an extended state;

[0055] Figure 15 yes Figure 1b Partial cross-sectional and enlarged view of the surgical electrode device, in which the moving part of the electrical adapter is shown in the retracted state;

[0056] Figure 16 It is a partial cross-sectional and enlarged view of a surgical electrode device, in which the movable part of the electrical adapter is shown in the extended state;

[0057] Figure 17 This is a partial sectional view and enlarged view of a surgical electrode device, in which the moving part of the electrical adapter is shown in the retracted state; and

[0058] Figures 18a to 18c The diagrams show the suction switch in the off, smoking, and suction positions, respectively. Detailed Implementation

[0059] In this specification, various systems, structures, and devices are schematically depicted in the accompanying drawings for illustrative purposes only. Not all features of actual systems, structures, and devices are described; for example, well-known functions or structures are not described in detail to avoid unnecessary detail that could obscure the invention. It should be understood that in any practical application, numerous implementation decisions are required to achieve the specific goals of the developer or user, and to comply with system-related and industry-related limitations, which may vary depending on the specific application. Furthermore, it should be understood that while such implementation decisions are complex and time-consuming, they are routine tasks for those skilled in the art who will benefit from this invention.

[0060] The terms and phrases used herein should be understood and interpreted in accordance with the understanding of those skilled in the art. The consistent use of terms or phrases herein is not intended to imply a specific definition, i.e., a definition different from the common and conventional meaning understood by those skilled in the art. For terms or phrases intended to have a specific meaning, i.e., a meaning different from that understood by those skilled in the art, such specific definition will be explicitly listed in the specification, giving the specific definition of the term or phrase directly and unambiguously.

[0061] Unless otherwise required by the content, throughout the following description, the word “including” and its variations, such as “comprising” and “having”, will be interpreted in an open-ended, inclusive sense, that is, as “including but not limited to”.

[0062] The following describes an illustrative embodiment of the surgical electrode device 1 of this utility model. The surgical electrode device 1 can be used, for example, in laparoscopic surgery, and it can perform routine operations such as electrocautery, electrocoagulation, irrigation, and suction. Using its electrocautery function, the surgeon can cut the surgical area tissue; using its electrocoagulation function, the surgeon can stop bleeding and coagulate the bleeding site; using its irrigation function, the surgeon can rinse and clean the surgical area tissue; using its suction function, the surgeon can remove surgical waste fluids, residues, and fumes to ensure a clear and clean surgical field in minimally invasive surgery. The surgical electrode device 1 integrates multiple functions such as irrigation, suction, electrocoagulation, and electrocautery, meeting all surgical needs in one procedure, facilitating surgery, reducing surgical time, and improving surgical quality.

[0063] Figures 1a to 1d The surgical electrode device 1 according to one embodiment of the present invention is illustrated by way of different views. The surgical electrode device 1 may have a distal end / distal side that is further away from the operator during surgery and a proximal end / proximal side that is closer to the operator. The operator may be a physician or other personnel who operates the surgical electrode device 1 during surgery.

[0064] The surgical electrode device 1 generally includes a proximal handle assembly 2 for the operator to hold and operate, and an electrode assembly 3 that can be detachably connected to the handle assembly 2 distal to the handle assembly 2. The detachable electrode assembly 3 is connected to the handle assembly 2 using a quick-release plug-in connection structure, which will be described in detail below. This facilitates the rapid replacement of electrode assemblies 3 of different specifications (e.g., different specifications of blade tips) during surgery to meet surgical needs, thereby simplifying the operation and shortening the operation time.

[0065] Figures 2a to 7 The schematic diagram illustrates some detailed structural features of the electrode assembly 3. The electrode assembly 3 may have an elongated, hollow electrode rod 4, which may be made of a conductive material, such as stainless steel. See in particular... Figure 3 and Figure 4 The electrode rod 4 internally surrounds the infusion chamber 5 for the introduction of irrigation fluid into the surgical area and the removal of waste fluid from the surgical area. See also Figures 5a to 5c The electrode rod 4 has a disc-shaped flange 6, which will be described later, at its proximal end for conducting electrical contact with the electrode rod 4. A sleeve-shaped boss 7 is connected to the flange on the proximal side, and two sealing rings 8 are partially embedded in the boss. The disc-shaped flange 6 and the sleeve-shaped boss 7 can be integrally formed with the electrode rod 4, or they can be formed separately and fixed to the electrode rod 4.

[0066] See Figure 3 and Figure 4The electrode assembly 3 may have a blade 9 distally connected to, for example, welded to, the electrode rod 4. This blade 9 may be configured as a generally L-shaped monopolar blade 9 and may have a connecting portion 10 for connection to the electrode rod 4, an electrocoagulation portion with an electrocoagulation surface 11 for electrocoagulating and hemostatically stopping the tissue, and a cutting portion with a cutting edge 12 for cutting the tissue. The blade 9 may be an anti-adhesion blade with a special anti-adhesion coating.

[0067] The electrode assembly 3 may have a protective sleeve 13 fitted onto the electrode rod 4, the protective sleeve 13 extending over a large portion of the electrode rod 4 and movable relative to the electrode rod 4 between an extended position and a retracted position. In the extended position of the protective sleeve 13 (see...), Figure 2b In the extended position, the protective sleeve 13 extends distally beyond the electrode rod 4 and the blade 9 to completely cover the blade 9. This extended position is maintained, for example, during transport and during intraoperative movement to the surgical area, to prevent injury to personnel or the patient from the blade 9. In the retracted position of the protective sleeve 13 (see...), Figure 2a and Figure 3 In this configuration, the protective sleeve 13 moves proximally to expose the entire cutter head 9, allowing for electrocoagulation and cutting operations using the cutter head 9. See also Figure 3 The protective sleeve 13 may have a certain number of side holes 14, for example, 1 to 13, on its distal end. Therefore, when the protective sleeve 13 is in the extended position and suction is performed under negative pressure, the distal opening of the protective sleeve 13 may be blocked by tissue. At this time, the fluid can be continued to be aspirated through these side holes 14 to prevent a vacuum from being created in the infusion chamber 5 and squeezing the tissue, thereby protecting the surgical instruments and human tissue and preventing non-surgical damage.

[0068] See Figures 5a to 7 To enable movement of the protective sleeve 13 between a retracted position and an extended position, the electrode assembly 3 may have an actuation mechanism 15 disposed on the protective sleeve 13 and a cylindrical guide tube 16 for receiving the actuation mechanism 15 and guiding its movement. The actuation mechanism 15 may have a push-pull handle 17, which has a cylindrical body 18 and two opposing side ears 19 disposed on its sides (see especially...). Figure 7 The operator can use their fingers to hold the two side ears 19 to move the push-pull handle 17 back and forth. The electrode rod 4 can pass through the cylindrical body 18 with its proximal end, while the protective sleeve 13 can be fixedly embedded in the cylindrical body 18 with its proximal end.

[0069] See Figure 6The actuation mechanism 15 may have a retaining ring 20, and a protective sleeve 13 may pass through the retaining ring 20 at its proximal end and be stopped by its proximal flange 21, or flange, on the proximal end face of the retaining ring 20. The retaining ring 20 may be embedded within the cylindrical body 18 of the push-pull handle 17. The proximal flange 21 of the protective sleeve 13 abuts against a sealing ring 22 on its proximal side, which abuts against the proximal end wall of the cylindrical body 18 on its proximal side. The sealing ring 22 abuts against the electrode rod 4 on its radially inward side to prevent liquid from flowing into the handle assembly 2 through the narrow gap between the electrode rod 4 and the protective sleeve 13 during suction operation.

[0070] The actuation mechanism 15 may have two opposing, already known, ball bearing assemblies 23. The cylindrical portion of each ball bearing assembly 23 can successively pass through two overlapping holes provided in the cylindrical body 18 of the push-pull handle 17 and the retaining ring 20, thereby securing the retaining ring 20 and the push-pull handle 17 to each other axially and circumferentially. The balls 24 of the ball bearing assemblies 23 are radially outwardly compressed at the outer periphery of the cylindrical body 18 by a spring (not shown) within the cylindrical portion of the ball bearing assembly 23. See also... Figure 7 The beaded assembly 23 and the side ear 19 can be arranged at approximately 90°.

[0071] See Figure 5a and Figure 5b The guide cylinder 16 may have two opposing elongated guide grooves 25 on its two sides, and the two side ears 19 of the push-pull handle 17 can extend laterally through the guide grooves 25 so that they can be reached by fingers. The guide cylinder 16 has two pairs of recesses 26 spaced apart on its inner peripheral wall, namely a pair of distal recesses 26 and a pair of proximal recesses 26, which can correspond to the extended position and retracted position of the protective sleeve 13, respectively. That is, when the push-pull handle 17 is moved to the extended position and retracted position in the guide cylinder 16, the beads 24 of the bead assembly 23 enter the distal recesses 26 and the proximal recesses 26, respectively, and the sound and vibration can be detected by the operator, which can effectively indicate to the operator that the protective sleeve 13 has been moved to the extended position or the retracted position.

[0072] See Figures 5a to 5cThe electrode assembly 3 may also have a generally cylindrical electrode assembly connector 27 at its proximal end, which has a distal connection portion 28 and a proximal connection portion 29. The guide cylinder 16 is embedded and fixed (e.g., bonded) in the distal connection portion 28 at its proximal end, and the electrode rod 4 passes through and is fixed (e.g., bonded) to the distal connection portion 28. The proximal connection portion 29 of the electrode assembly connector 27 may be cylindrically formed and internally surrounds the electrode rod 4 with a disc-shaped flange 6, a sleeve-shaped boss 7, and a sealing ring 8, while the proximal end of the electrode rod 4 may extend proximally through the proximal connection portion 29. The electrode assembly connector 27 may have a locking groove 30 with a certain radial depth on the inner peripheral wall of its proximal connection portion 29, which is configured as a 360° extending annular groove, and the locking groove 30 may open radially inward along its entire length. The locking groove 30 can be used to axially lock the electrode assembly 3 and the handle assembly 2 when they are connected. In the illustration, the locking groove 30 can be configured to be radially outwardly open at two opposing locations, which is required by the manufacturing process.

[0073] The handle assembly 2 has a housing with an upper shell 31 and a lower shell 32. See also Figure 12a The lower housing 32 has a generally cylindrical handle assembly connector 33 connected to its distal end. This handle assembly connector 33 is used to cooperate with the electrode assembly connector 27 to lock the electrode assembly 3 onto the handle assembly 2. For this purpose, see [reference needed]. Figures 8a to 12dThe handle assembly connector 33 has a locking structure in its circumferential direction, which includes a resilient tab 34 and a locking protrusion 35 disposed substantially centrally on the resilient tab 34. The resilient tab 34 can extend axially in the handle assembly connector 33 and can be formed by a portion of its own circumferential wall, i.e., by providing material gaps 36 on both sides of the resilient tab 34 in the circumferential direction. The resilient tab 34 has narrowing portions at its longitudinal ends, which allows the resilient tab 34 to be easily elastically deformable in the radial direction. The locking protrusion 35 extends radially outward from the resilient tab 34 and has a longitudinal section of a substantially right-angled triangle shape. Therefore, the locking protrusion 35 can have a locking surface 37 at its proximal end, which extends substantially perpendicular to the resilient tab 34. The locking protrusion 35 has an unlocking ramp 38 at its distal end, which extends inclined to the resilient tab 34. When the resilient tab 34 is pressed radially inward through the unlocking ramp 38, the resilient tab 34 can elastically deform radially inward. With the electrode assembly 3 and handle assembly 2 connected, the locking protrusion 35 engages in the locking groove 30 of the electrode assembly connector 27. Through the cooperation of the locking protrusion 35 and the locking groove 30, the electrode assembly 3 and handle assembly 2 are axially fixed to prevent unwanted loosening. Simultaneously, the orientation of the blade 9 can be freely adjusted intraoperatively by rotating the electrode assembly connector 27 relative to the handle assembly 2 (which here functions as a blade steering wheel for manual operation by the operator) and thus rotating the blade 9, without the need for uncomfortable wrist rotation. Furthermore, based on the radially inward elastic deformation of the elastic tab 34, when the electrode assembly 3 and handle assembly 2 are inserted, the electrode assembly connector 27 can easily pass over the locking protrusion 35 and fit onto the handle assembly connector 33, simultaneously locking it in place. A crisp sound is produced when the locking protrusion 35 enters the locking groove 30, informing the operator that the detachable electrode assembly 3 has been installed in place with the handle assembly 2.

[0074] See Figure 11 The handle assembly 2 may have a detachment ring 39 mounted, specifically extending from the distal side to the proximal side, on the handle assembly connector 33. This detachment ring 39 is used to unlock the electrode assembly 3 from the handle assembly 2. See also Figures 13a to 13c The removal ring 39 has an insertion section 40 that inserts into the electrode assembly connector 27 in the installed state and a gripping section 41 exposed outside the electrode assembly connector 27 for operator handling. The insertion section 40 has two opposing unlocking holes 42 that engage with the locking protrusion 35 of the handle assembly connector 33. These unlocking holes 42 are configured as rectangular through-holes passing through the peripheral wall of the removal ring 39. See also the image in the installed state. Figures 8a to 9aThe locking protrusion 35 of the locking structure can be inserted into the unlocking hole 42 and extend radially outward into the locking groove 30 of the electrode assembly connector 27. This protruding part can abut against the side wall of the locking groove 30 for axial locking. The gripping section 41 has a structure on its outer periphery that enhances gripping friction, which is either a rib 43 or a groove. In the connected state, when the gripping section 41 pulls the release ring 39 toward the handle assembly connector 33, the unlocking hole 42 of the release ring 39 is moved and can radially inwardly press the unlocking ramp 38 of the locking protrusion 35. This causes the elastic tab 34 to bend radially inward and move the locking protrusion 35 radially inward relative to the unlocking hole 42, so that the locking protrusion 35 leaves the locking groove 30 of the electrode assembly connector 27, thereby unlocking the electrode assembly 3 and the handle assembly 2.

[0075] The following is combined Figure 8a and Figure 8b The process of inserting and locking the electrode assembly 3 onto the handle assembly 2 and unlocking and removing it is further described.

[0076] In the insertion and locking step of the electrode assembly 3 and the handle assembly 2, the electrode assembly 3 and the handle assembly 2 are aligned and pushed toward each other until the locking protrusion 35 of the handle assembly connector 33 enters and locks into the locking groove 30 of the electrode assembly 3. During insertion, the locking protrusion 35 first contacts the inner wall of the electrode assembly connector 27 and is radially pressed inward, while the elastic tab 34 elastically deforms radially inward, so that the locking protrusion 35 can move axially within the electrode assembly connector 27 to reach the locking groove 30. After the locking protrusion 35 reaches the locking groove 30, the locking protrusion 35 retracts radially outward into the locking groove 30 based on the elastic return of the elastic tab 34, and abuts against the proximal side of the locking groove 30, at which point it enters the locked state.

[0077] In the locked state of the electrode assembly 3, the electrode assembly connector 27 and thus the entire electrode assembly 3 are allowed to be rotated at any angle relative to the handle assembly 2, at which time the locking groove 30 is locked and the protrusion 35 is guided in the circumferential direction.

[0078] When it is necessary to unlock and remove the electrode assembly 3 from the handle assembly 2, first hold the grip section 41 of the removal ring 39 and pull the removal ring 39 outward or towards the side. At this time, the unlocking hole 42 of the removal ring 39 presses against the unlocking slope 38 of the locking protrusion 35 of the handle assembly connector 33, causing the elastic contact piece 34 to deform radially inward and drive the locking protrusion 35 to move radially inward from the locking groove 30 to achieve unlocking. Then continue to pull the electrode assembly 3 outward to remove it from the handle assembly 2.

[0079] The quick-release plug-in connection scheme designed here has proven to be very advantageous. On the one hand, it is more reliable than other ordinary plug-in connection schemes; on the other hand, compared with threaded connection schemes, it allows for faster replacement of electrode assemblies 3 of different specifications and models during the operation; finally, it allows the electrode assembly 3 to rotate arbitrarily relative to the handle assembly 2 to adjust the angle of the blade 9 arbitrarily during the operation.

[0080] See Figures 14 to 17 The handle assembly 2 may have an electrical adapter 44 disposed in the handle assembly connector 33, which may be configured as a spring pin, for example. The electrical adapter 44 extends elongatedly and may have a long cylindrical fixed portion 45 and a short cylindrical moving portion 46 disposed distal to the fixed portion 45, as well as an elastic element, such as a compression spring (not shown), disposed between the fixed portion 45 and the moving portion 46. The fixed portion 45 is fixed in a receiving groove disposed in the handle assembly connector 33 and its proximal end is electrically connected to the distal end of an electrode wire 47, which can be connected to a power source via an electrical plug 48 at its proximal end. The compression spring can compress the moving portion 46 distally away from the fixed portion 45. For example, similar to the principle of the ball bearing assembly 23, the fixed portion 45 may be at least partially hollow and its cavity may house a compression spring capable of always compressing the moving portion 46 distally.

[0081] When the movable part 46 is not subjected to distal compressive force, it can extend distally beyond the distal end face of the fixed part 45 and the handle assembly connector 33 based on the elastic force of the compression spring, thus entering its extended state. This occurs before the electrode assembly 3 is connected to the handle assembly 2. Figure 14 and Figure 16 Although the electrode assembly 3 and the handle assembly 2 are shown in a connected state, the moving part 46 of the power adapter 44 is intentionally shown here as if the two are not yet connected, so as to clearly see the relative position of the moving part 46 when it is extended.

[0082] When the movable part 46 is subjected to a proximal compressive force, the movable part 46 can overcome the elastic force of the compression spring and move completely into the fixed part 45. See also Figure 15 and Figure 17This occurs when the electrode assembly 3 is connected to the handle assembly 2. Specifically, during the connection process, the disc-shaped flange 6 on the electrode rod 4 contacts the moving part 46 and presses it towards the fixed part 45, causing the moving part 46 to move from an extended state into a retracted state within the fixed part 45, until the disc-shaped flange 6 abuts against the distal surface of the handle assembly 2. At this point, based on the compression spring pressing the moving part 46 distally, the moving part 46 securely abuts against the disc-shaped flange 6 and thus maintains stable electrical contact with the electrode rod 4. The design of the disc-shaped flange 6 is advantageous because it ensures that the moving part 46 remains electrically contacted against the disc-shaped flange 6 of the electrode rod 4 regardless of the angle at which the electrode rod 4 and the cutter head 9 are rotated. Therefore, when docking the electrode assembly 3 and the handle assembly 2, the electrical conduction of the electrode rod 4 can be ensured without considering their relative rotational positions. Furthermore, when rotating the blade head 9 during the operation, the moving part 46 slides on the disc-shaped flange 6 but always abuts against the disc-shaped flange 6 of the electrode rod 4.

[0083] See Figure 1d , Figure 8a and Figure 16 The handle assembly 2 has a three-way connector 49, which is inserted into the center of the handle assembly connector 33 with its distal section having a first interface 50, and is fixed in the housing with its proximal end having a second interface 51 and a third interface 52 at a specific angle to each other. The proximal end of the electrode rod 4, together with the sealing ring 8 thereon, can be inserted into the first interface 50, so that the infusion chamber 5 of the electrode rod 4 is in fluid communication with the three-way connector 49.

[0084] See especially Figure 1c and Figure 1d The thicker second interface 51 can be connected to the distal end of the suction tube 53, allowing fluid communication between the suction tube 53 and the infusion chamber 5 of the electrode rod 4. The suction tube 53 can also be connected at its proximal end to a central negative pressure source (not shown) for suction operation. A suction switch 54 is provided inside the housing for the suction tube 53. This suction switch 54 has… Figures 18a to 18c The first position, i.e., the closed position, the second position, i.e., the smoking position, and the third position, i.e., the suction position, are shown respectively. In the closed position, the suction tube 53 is completely blocked, prohibiting suction. In the smoking position, the suction tube 53 is partially released, allowing smoke to pass through, such as smoke generated after electrocoagulation of tissue. In the suction position, the suction tube 53 is released more, i.e., completely, allowing waste liquid to pass through, such as rinsing fluid after rinsing the surgical area or body fluid from the surgical area.

[0085] See Figures 18a to 18bIn terms of structural design, the suction switch 54 is a modified version of a conventional infusion set flow regulating device. The suction switch 54 may include a bracket 55 fixed within a housing and a roller 56 capable of rolling within the bracket 55. The suction tube 53 extends between the bracket 55 and the roller 56. Guide grooves 57 are provided on both sides of the bracket 55 to guide the roller 56. (See [reference]) Figure 18a An inclined surface 58 extending from the guide groove 57 is provided at the distal position corresponding to the closed position. When the roller 56 rolls to this position, its axle engages with the inclined surface 58. To roll the roller 56 closer to this position, a relatively large force is required to overcome the inclined surface 58. This serves as a signal to the operator that the closed position has been reached or is not reached. See also... Figure 18b A slot 59 extending perpendicularly to the guide groove 57 is provided at the middle position corresponding to the smoking position. When the roller 56 rolls to this position, its shaft engages in the slot 59 to indicate to the operator that the smoking position has been reached. Thus, by pushing the roller 56, the suction force is adjusted to ensure the doctor's needs for smoking and aspiration of waste fluid during electrocoagulation are met. The suction switch 54 therefore has a clear tactile feel for the off and smoking positions, and can be finely adjusted between the smoking and off positions to meet the doctor's needs for real-time fine-tuning according to the smoking force required during the operation.

[0086] See especially Figures 1a to 1d , Figure 8a and Figure 9a A thinner third interface 52 can be connected to the distal end of the flushing tube 60, allowing fluid communication between the flushing tube 60 and the infusion chamber 5 of the electrode rod 4. The flushing tube 60 can also be connected at its proximal end to the flushing pump 61. The flushing pump 61 can be connected to a flushing fluid source, such as a saline bag (bottle) (not shown), via a stopper puncture needle 62 for flushing operations. The flushing pump 61 can be powered by a 12V DC power supply, ensuring safety and eliminating the risk of electric shock. This provides a stable energy source to the flushing pump 61, guaranteeing its long-term stable operation.

[0087] Furthermore, a flushing switch 63 can be provided on the side of the flushing tube 60 via the handle assembly 2. This switch is electrically connected to the flushing pump 61 via the flushing pump control line 66 and can control the power of the flushing pump 61. The flushing switch 63 can have an off position, a low-flow flushing position, and a high-flow flushing position. The water flow rate is selected during flushing by pushing the flushing switch 63 back and forth. Under the control of the flushing switch 63, the flushing pump 61 stably provides the selected water flow rate from the saline bag (bottle). The flushing pump 61 internally consists of a diaphragm pump and a DC control circuit. The diaphragm pump is fixed to the flushing pump housing by a shock-absorbing ring of a specific structure, achieving vibration reduction and noise reduction. In particular, the flushing pump 61 is equipped with a soft nylon lanyard, which absorbs the vibration generated during operation and prevents it from being transmitted to other objects.

[0088] With the tee connector 49 in place, the cavities used for flushing and suction are relatively independent, so the suction of waste liquid will not contaminate the flushing fluid.

[0089] Finally, it should be noted that the above embodiments are merely for understanding and explaining the present invention, and do not constitute a limitation on the scope of protection of the present invention. Those skilled in the art can make modifications based on the above embodiments, and all such modifications do not depart from the scope of protection of the present invention.

Claims

1. A surgical electrode device having a distal end further from an operator when in use and a proximal end closer to the operator when in use, characterised in that, The surgical electrode device comprises: an electrode assembly having an electrode shaft and a blade head fixed at a distal end of the electrode shaft; and a handle assembly, the electrode assembly being detachably connectable to the handle assembly, wherein, in a connected state of the electrode assembly and the handle assembly, the electrode assembly and the handle assembly are axially fixed to each other, while the electrode assembly is rotatably movable relative to the handle assembly.

2. The surgical electrode device of claim 1, wherein, The electrode assembly has an electrode assembly joint fixed at a proximal end of the electrode shaft, and the handle assembly is provided with a handle assembly joint at a distal end thereof, the electrode assembly joint and the handle assembly joint being axially nested with each other in the connected state of the electrode assembly and the handle assembly, wherein at least one radially protruding locking protrusion is provided on one of the electrode assembly joint and the handle assembly joint, and a locking groove cooperating with the locking protrusion is provided on the other one of the electrode assembly joint and the handle assembly joint, wherein the locking groove opens towards the locking protrusion to allow the locking protrusion to be embedded in the locking groove to axially lock the electrode assembly and the handle assembly to each other, and the locking groove extends in a circumferential direction to allow the locking protrusion to move in the locking groove in a circumferential direction to allow the electrode assembly to be rotatably movable relative to the handle assembly.

3. The surgical electrode device of claim 2, wherein, A detachment ring extends between the electrode assembly joint and the handle assembly joint, the detachment ring is provided with at least one unlocking hole in a peripheral wall thereof to be passed through by the locking protrusion, the locking protrusion being capable of being extended into the locking groove after passing through the unlocking hole, wherein the locking protrusion is capable of being driven to move radially away from the locking groove by axially moving the detachment ring relative to the locking protrusion.

4. The surgical electrode device of claim 3, wherein, The locking protrusion is arranged on a resilient web, the resilient web being elastically deformed radially when the locking protrusion moves radially.

5. The surgical electrode device of claim 3, wherein, The locking protrusion has an unlocking slope, an edge of the unlocking hole of the detachment ring radially pressing the locking protrusion via the unlocking slope when the detachment ring is axially moved.

6. The surgical electrode device of claim 2, wherein, The locking groove is configured as a ring groove.

7. The surgical electrode device of claim 1, wherein, The electrode shaft is provided with a radially protruding disc-shaped flange at a proximal end thereof, the handle assembly is provided with an electrical adapter at a distal end thereof, the electrical adapter being electrically connected to the electrode lead, in the connected state of the electrode assembly and the handle assembly, the electrical adapter abuts against the disc-shaped flange with a distal end thereof to be electrically connected to the electrically conductive electrode shaft, and the electrical adapter keeps sliding contact on the disc-shaped flange when the electrode assembly is rotatably moved relative to the handle assembly.

8. The surgical electrode device of claim 7, wherein, The electrical adapter has a distal moving part, a proximal fixed part electrically connected to the electrode lead, and a resilient member capable of pressing the moving part towards the distal side, wherein, in the connected state of the electrode assembly and the handle assembly, the moving part is in contact with the disc-shaped flange and is pressed towards the disc-shaped flange by the resilient member, and, in the detached state of the electrode assembly and the handle assembly, the moving part is pressed further away from the fixed part by the resilient member towards the distal side.

9. The surgical electrode device of claim 8, wherein, The fixed part is at least partially configured with a receiving cavity, the resilient member is arranged in the receiving cavity, and the moving part is capable of being more and less received in the receiving cavity by movement.

10. The surgical electrode device of claim 1, wherein, The electrode assembly has a protective sleeve sleeved on the electrode rod, which can be axially moved relative to the electrode rod between an extended position covering the blade head and a retracted position exposing the blade head.

11. The surgical electrode device of claim 10, wherein, An actuating mechanism fixed to the protective sleeve and a guide cylinder guiding the axial movement of the actuating mechanism are provided for the protective sleeve, the actuating mechanism has a push-pull handle with a cylindrical body arranged in the guide cylinder and a lateral lug extending laterally from the guide cylinder, and the protective sleeve is fixedly embedded in the cylindrical body with its proximal end.

12. The surgical electrode device of claim 11, wherein, The actuating mechanism has a snap ring embedded in the cylindrical body of the push-pull handle, the protective sleeve passes through the snap ring and is stopped at the proximal end face of the snap ring with its proximal flange.

13. The surgical electrode device of claim 12, wherein, The proximal flange of the protective sleeve abuts proximally against a sealing ring sleeved on the electrode rod.

14. The surgical electrode device of claim 11, wherein, A wave bead assembly is provided on one of the cylindrical body and the guide cylinder, and a distal recess and a proximal recess are provided on the other one of the cylindrical body and the guide cylinder, and the wave beads of the wave bead assembly enter the distal recess and the proximal recess respectively when the push-pull handle is moved to the extended position and the retracted position in the guide cylinder.

15. The surgical electrode device of claim 12, wherein, A wave bead assembly is provided on the cylindrical body, and the barrel of the wave bead assembly successively passes through the holes arranged on the cylindrical body and the snap ring which are stacked on each other to fix the cylindrical body and the snap ring to each other.

16. The surgical electrode device of claim 1, wherein, An aspiration switch is provided on the handle assembly, the aspiration switch includes a bracket and a roller which can be rollingly moved in the bracket, and an aspiration tube extends between the bracket and the roller, wherein the roller can be moved between a closed position, a liquid suction position and a smoke suction position between the closed position and the liquid suction position.

17. The surgical electrode device of claim 16, wherein, Guide grooves are provided on both sides of the bracket to guide the roller, wherein an inclined surface extending obliquely to the guide groove is provided at a position of the guide groove corresponding to the closed position, and / or a clamping groove extending perpendicularly to the guide groove is provided at a position of the guide groove corresponding to the smoke suction position.

18. The surgical electrode device of claim 1, wherein, A flushing switch is provided on the handle assembly, the flushing switch is electrically connected to a flushing pump and can control the power of the flushing pump.

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