Medical electrode cutter head

Abstract

The utility model discloses a medical electrode tool bit, and belongs to the technical field of medical instruments. A medical electrode tool bit comprises a single-pole plug, a double-pole plug, a handle assembly, a liquid injection tube and an electrode assembly. The handle assembly is provided with a rotating wheel capable of rotating by 360 degrees, a monopole circuit, a bipolar circuit, a monopole cutting button for controlling the on-off of the monopole circuit, a bipolar electrocoagulation button for controlling the on-off of the bipolar circuit and a push-pull piece; the electrode assembly comprises a unipolar cutting electrode, two bipolar electrocoagulation hemostasis electrodes, an insulator and an outer tube; one end of the liquid injection pipe is communicated with an external liquid supply device, and the other end is hermetically connected with a water inlet cavity in the handle assembly; the electrode cutter head is provided with a single-pole cutting function module and a double-pole electric coagulation hemostasis function module, so that different functions can be switched at any time in the operation process, and the operation is convenient and fast. The electrode assembly can rotate by 360 degrees through the rotating wheel, the monopole cutting electrode can be flexibly stretched out and drawn back through the push-and-pull piece, and medical staff can conveniently adjust the monopole cutting electrode in real time in an operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field more specifically, relate to a kind of medical electrode tool bit. BACKGROUND

[0002] At present, surgical electrode tool bit with energy is gradually replacing traditional surgical knife in surgical field, such as high-frequency electric surgical electrode tool bit, which is rapidly developing under the use of surgery, minimally invasive surgery and soft endoscope, but at present, a large number of electrode tool bits have either monopolar function or bipolar function, and the two have different application scenarios. The monopolar electrode tool bit is generally used for cutting, and the bipolar electrode tool bit is mainly used for electrocoagulation hemostasis. The bipolar tool bit is mainly used for electrocoagulation hemostasis, which is more secure, and the heat damage of coagulation is controllable, avoiding excessive electrocoagulation damage and causing medical accidents. Therefore, in the future, bipolar electrocoagulation hemostasis will gradually become the better choice of doctors. However, based on the current situation, the demand for cutting and electrocoagulation hemostasis needs to be switched frequently in actual surgery. Therefore, if the current monopolar or bipolar electrode tool bit is used under the prior art, the user needs to frequently switch instruments, which causes inconvenience for doctors and prolongs the operation time. Therefore, it is urgent to integrate the functions of monopolar cutting and bipolar electrocoagulation hemostasis into the same electrode tool bit. In view of this, we propose a medical electrode tool bit. SUMMARY

[0003] The utility model aims at providing a kind of medical electrode tool bit to solve the problems raised in the above background.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] A kind of medical electrode tool bit, comprising a monopolar plug, a bipolar plug, a handle assembly, a liquid injection pipe and an electrode assembly;

[0006] The monopolar plug, the bipolar plug and the liquid injection pipe are installed in the handle assembly and extend out of the handle assembly at one end. The electrode assembly is connected to the handle assembly and extends out of the handle assembly at one end.

[0007] The handle assembly is provided with a 360° rotatable rotary wheel, a monopolar circuit, a bipolar circuit, a monopolar cutting button for controlling the on-off of the monopolar circuit, a bipolar electrocoagulation button for controlling the on-off of the bipolar circuit and a push-pull piece. The rotary wheel rotates to drive the electrode assembly to rotate synchronously.

[0008] The electrode assembly comprises a monopolar cutting electrode, two bipolar electrocoagulation hemostasis electrodes, an insulator and an outer tube; the insulator is provided with a sliding groove, the monopolar cutting electrode is slidably arranged in the sliding groove and is in transmission connection with a push-pull piece, and the push-pull piece drives the monopolar cutting electrode to extend or retract relative to the insulator when the push-pull piece is pushed or pulled; the two bipolar electrocoagulation hemostasis electrodes are fixed on the two sides of the insulator and are in electrical connection with a bipolar circuit, and the monopolar cutting electrode is in electrical connection with a monopolar circuit.

[0009] The liquid injection pipe is in sealed connection with a water inlet cavity in the handle assembly at one end and is in communication with an external liquid supply device at the other end; the insulator is provided with an insulator water inlet hole and an insulator water outlet hole in communication, and the insulator water inlet hole is in communication with the water inlet cavity; the outer tube is sleeved on the outer side of one end of the insulator and is connected with the handle assembly.

[0010] Preferably, the bipolar plug comprises two plastic insulating shells, and three metal plugs are arranged in the plastic insulating shells; two metal plugs on the edge are respectively connected with a wire having an insulating outer layer, and the wire extends to the outside of the plastic insulating shell and is connected with the bipolar circuit in the handle assembly at the end away from the metal plug; the bipolar circuit is in a default off state, and is turned on when the bipolar electrocoagulation button is pressed.

[0011] Preferably, the monopolar plug comprises one plastic insulating shell, and one metal plug is arranged in the plastic insulating shell; the metal plug is connected with a wire, and the wire extends to the outside of the plastic insulating shell and is connected with the monopolar circuit in the handle assembly at the end away from the metal plug; the monopolar circuit is in a default off state, and is turned on when the monopolar cutting button is pressed.

[0012] Preferably, the liquid injection pipe is a high polymer pipe, and a Luer taper joint is arranged at the end extending out of the handle assembly.

[0013] The handle assembly further comprises an outer shell made of injection molded plastic material.

[0014] Preferably, the handle assembly further comprises a connector rotatable by 360 degrees and a water sealing seat.

[0015] The connector is provided with a small hole in the middle part located in the water inlet cavity, and each of the left and right sides of the connector is provided with a sealing ring for sealing the water inlet cavity.

[0016] One end of the connector is in threaded connection with the water sealing seat, and the connection part of the connector is provided with a silica gel ring for enhancing sealing.

[0017] Preferably, the handle assembly further comprises a cutting electrode connecting pipe, a conducting pipe and a limiting ring.

[0018] One end of the cutting electrode connecting pipe is fixed with the monopolar cutting electrode, and the other end of the cutting electrode connecting pipe passes through the connector, the silica gel ring and the water sealing seat in sequence and is fixed with the push-pull piece.

[0019] The conducting tube is tightly sleeved on the cutting electrode connecting tube and is located between the water sealing seat and the push-pull piece, and the outer diameter of the conducting tube is at least 0.4mm larger than the inner diameter of the push-pull piece;

[0020] The limiting ring is tightly fixed to the end of the cutting electrode connecting tube close to the push-pull piece, and the conducting tube and the limiting ring jointly limit the moving track of the cutting electrode connecting tube.

[0021] Preferably, a conical spring sheet sleeved on the conducting tube is further arranged in the handle assembly, and the conical spring sheet is located between the water sealing seat and the push-pull piece.

[0022] The monopolar circuit is connected to a wire at one end close to the electrode assembly, the other end of the wire is electrically connected to the conical spring sheet, the conducting tube and the cutting electrode connecting tube are conductors, and the monopolar circuit is conducted with the monopolar cutting electrode through the conical spring sheet, the conducting tube and the cutting electrode connecting tube.

[0023] Preferably, two bipolar wire metal rings sleeved on the outer surface of the connector are further arranged in the handle assembly, and the connector can rotate 360° relative to the bipolar wire metal rings.

[0024] The insulator is further provided with bipolar electrocoagulation hemostatic electrode wire holes, two bipolar electrocoagulation hemostatic electrodes are respectively connected to a wire, the other end of the wire passes through the bipolar electrocoagulation hemostatic electrode wire hole, and the two wires are electrically connected to the bipolar wire metal rings one by one.

[0025] The bipolar circuit is connected to two wires with insulating outer layers at one end close to the electrode assembly, and the other end of the two wires is electrically connected to the bipolar wire metal rings one by one.

[0026] Preferably, a fixing tube is further arranged at one end of the handle assembly, and the fixing tube is connected to the handle assembly.

[0027] The other end of the outer tube away from the insulator is arranged in the fixing tube and is fixed to the fixing tube through bonding or heat shrink process, and the rotating wheel is fixed to the outer surface of the fixing tube and is clamped to the shell of the handle assembly, and the rotating wheel drives the fixing tube, the outer tube and the electrode assembly to rotate synchronously when the rotating wheel rotates around the shell.

[0028] Preferably, the monopolar cutting electrode is a hook-shaped monopolar cutting electrode, a plate-shaped monopolar cutting electrode or a type-shaped monopolar cutting electrode.

[0029] Compared with the prior art, the utility model has the beneficial effects that:

[0030] The electrode tool bit has the functions of monopolar cutting and bipolar electrocoagulation, can switch different functions at any time during the operation, is convenient and fast, and improves the operation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is an electrode tool bit structure schematic diagram;

[0032] Figure 2 It is an electrode tool bit handle assembly internal structure schematic diagram;

[0033] Figure 3 It is a partial structure schematic diagram in Figure 2

[0034] Figure 4 It is an electrode tool bit section schematic diagram;

[0035] Figure 5 It is a partial structure schematic diagram in Figure 4

[0036] Figure 6 It is a handle assembly section schematic diagram;

[0037] Figure 7 It is a partial structure schematic diagram in Figure 6

[0038] Figure 8 It is a partial structure schematic diagram in Figure 6

[0039] Figure 9 It is a hook-shaped monopolar cutting electrode structure schematic diagram;

[0040] Figure 10 It is a bipolar electrocoagulation electrode structure schematic diagram;

[0041] Figure 11 It is an insulator structure schematic diagram;

[0042] Figure 12 It is a right view structure schematic diagram of Figure 11

[0043] Figure 13 It is a section structure schematic diagram of Figure 11

[0044] ​​​​​​Figure 14 Figure is a schematic view of a plate-shaped monopolar cutting electrode structure.

[0045] Figure number explanation: 1, bipolar plug; 2, monopolar plug; 3, liquid injection pipe; 4, handle assembly; 5, electrode assembly; 41, push-pull piece; 42, monopolar cutting button; 43, bipolar electrocoagulation button; 44, sealing ring; 45, silica gel ring; 46, bipolar wire metal ring; 47, water inlet cavity; 48, rotating wheel; 49, fixed pipe; 411, limiting ring; 412, conducting pipe; 413, conical spring sheet; 414, water sealing seat; 415, connector; 416, shell; 417, cutting electrode connecting pipe; 51, monopolar cutting electrode; 52, bipolar electrocoagulation hemostatic electrode; 53, insulator; 54, outer pipe; 531, insulator water outlet hole; 532, insulator water inlet hole; 533, bipolar electrocoagulation hemostatic electrode wire hole; 534, sliding groove. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0047] Embodiment:

[0048] Please refer to Figures 1-14 A medical electrode tool head, comprising a monopolar plug 2, a bipolar plug 1, a handle assembly 4, a liquid injection pipe 3, and an electrode assembly 5; the monopolar plug 2, the bipolar plug 1, and the liquid injection pipe 3 are all installed in the handle assembly 4 and extend out of the handle assembly 4 at one end, the electrode assembly 5 is connected with the handle assembly 4 and extends out of the handle assembly 4 at one end, and is used for directly acting on a surgical site of a human body to realize cutting or hemostasis. The monopolar plug 2 is used for connecting to a working host to obtain monopolar energy, the bipolar plug 1 is used for connecting to the working host to obtain bipolar energy, and the liquid injection pipe 3 is used for conveying liquid such as physiological saline; the electrode assembly 5 is fixed with the handle assembly 4 and extends out of the handle assembly 4 at one end.

[0049] As Figure 2 shown, the handle assembly 4 is provided with a rotating wheel 48 that can rotate by 360 degrees, a monopolar circuit, a bipolar circuit, a monopolar cutting button 42 for controlling the on-off of the monopolar circuit, a bipolar electrocoagulation button 43 for controlling the on-off of the bipolar circuit, and a push-pull piece 41; when the rotating wheel 48 rotates, the electrode assembly 5 is driven to rotate synchronously, so as to adjust the angle of the electrode assembly 5 acting on the surgical site; the monopolar cutting button 42 is used for starting and stopping the switching of the monopolar cutting mode, and the bipolar electrocoagulation button 43 is used for starting and stopping the switching of the bipolar electrocoagulation hemostasis mode; the push-pull piece 41 is used for driving the monopolar cutting electrode to extend and retract, so that the electrode tool head can be more conveniently controlled.

[0050] As Figure 3As shown, the electrode assembly 5 includes a monopolar cutting electrode 51, two bipolar electrocoagulation hemostatic electrodes 52, an insulator 53 and an outer tube 54; the monopolar cutting electrode is used to cut human tissue in monopolar mode, and the two bipolar electrocoagulation hemostatic electrodes 52 are used to electrocoagulate and hemostasis at the bleeding site in bipolar mode; as shown Figure 13 As shown, the insulator 53 is provided with a sliding groove 534, which not only provides sliding guidance for the monopolar cutting electrode 51, but also realizes insulation and isolation of the monopolar cutting electrode 51 and the bipolar electrocoagulation hemostatic electrode 52; the monopolar cutting electrode 51 can be slidably arranged in the sliding groove 534 and is in transmission connection with the push-pull piece 41; when the push-pull piece 41 is pushed and pulled forward and backward, the monopolar cutting electrode 51 is extended or retracted relative to the insulator 53; when cutting is needed, the monopolar cutting electrode 51 is extended, and when electrocoagulation hemostasis is needed, the monopolar cutting electrode 51 is retracted; the instrument does not need to be frequently replaced, which is convenient and fast; the two bipolar electrocoagulation hemostatic electrodes 52 are respectively fixed on both sides of the insulator 53 and are in electrical connection with the bipolar circuit; the monopolar cutting electrode 51 is in electrical connection with the monopolar circuit.

[0051] The liquid injection pipe 3 is in sealed connection with the water inlet cavity 47 in the handle assembly 4 at one end for connecting with an external liquid supply device; as shown Figures 11-12 As shown, the insulator 53 is provided with a communicating insulator water inlet hole 532 and an insulator water outlet hole 531; the insulator water inlet hole 532 is in communication with the water inlet cavity 47, and the liquid enters through the insulator water inlet hole 532 and flows out from the insulator water outlet hole 531, realizing irrigation, cooling and reducing tissue adhesion at the surgical site; the outer tube 54 is sleeved on the outer side of one end of the insulator 53 and is connected with the handle assembly 4; the outer tube 54 is sleeved on the outer side of the insulator 53, which is used to protect the insulator 53 and the internal electrode, avoiding damage or interference during the operation.

[0052] In this application, the bipolar plug 1 includes two plastic insulating shells, and three metal plugs are installed in the plastic insulating shells; the metal plugs are in contact with the corresponding interfaces of the working host to transmit bipolar energy; specifically, the two metal plugs at the side are respectively connected with a wire having an insulating outer layer, which avoids short circuit between the two wires and ensures independent transmission of bipolar energy; the end of the insulating outer layer wire away from the metal plug extends to the outside of the plastic insulating shell and is connected with the bipolar circuit in the handle assembly 4; the bipolar circuit is disconnected by default, and is turned on when the bipolar electrocoagulation button 43 is pressed, so that the bipolar electrocoagulation hemostatic electrode 52 obtains energy to realize electrocoagulation hemostasis.

[0053] In the application, the single pole plug 2 comprises a plastic insulating shell II, and a metal plug is installed in the plastic insulating shell II. The plastic insulating shell serves to insulate and protect the internal metal plug, preventing energy leakage. The metal plug serves to contact the working host interface and transmit the energy required for single pole cutting. Specifically, the metal plug is connected with a wire. The wire serves to transmit the single pole energy from the metal plug to the single pole circuit. The wire extends to the outside of the plastic insulating shell II at the end away from the metal plug and is connected with the single pole circuit in the handle assembly 4. The single pole circuit is in a default off state. When the single pole cutting button 42 is pressed, the single pole circuit is turned on, so that the single pole cutting electrode 51 obtains energy to achieve tissue cutting.

[0054] In the application, the liquid injection pipe 3 is a high polymer pipe, which has good corrosion resistance and flexibility, is suitable for liquid supply in surgery, and is provided with a luer taper joint at the end extending out of the handle assembly 4, so as to realize sealed connection with an external liquid supply device and prevent liquid leakage. Further, the other end of the liquid injection pipe 3 is connected in the handle assembly 4 and finally connected in a sealed manner with the water inlet cavity 47 of the handle assembly 4.

[0055] The handle assembly 4 further comprises an outer shell 416 made of injection molded plastic material, which mainly provides protection for the parts arranged inside the handle assembly 4, avoids collision damage, and achieves the purpose of insulation.

[0056] In the application, as shown in Figures 5-8 The handle assembly 4 is further provided with a connector 415 and a water sealing seat 414, which can rotate 360° in the circumferential direction, so as to realize 360° circumferential rotation of the electrode assembly 5.

[0057] The connector 415 is provided with a small hole in the middle part, which is located in the water inlet cavity 47, so as to allow liquid to flow from the water inlet cavity 47 into the connector 415. The connector 415 is provided with a sealing ring 44 on each of the left and right sides, which mainly serves to seal the water inlet cavity 47.

[0058] One end of the connector 415 is threadedly connected with the water sealing seat 414. The connection part of the connector 415 is provided with a silica gel ring 45, which mainly serves to seal water.

[0059] In the application, the handle assembly 4 is further provided with a cutting electrode connecting pipe 417, a conducting pipe 412 and a limiting ring 411.

[0060] One end of the cutting electrode connecting pipe 417 is fixed with the single pole cutting electrode 51, and the other end is fixed with the push-pull piece 41 after sequentially penetrating through the connector 415, the silica gel ring 45 and the water sealing seat 414. The cutting electrode connecting pipe 417 serves to connect the single pole cutting electrode 51 with the push-pull piece 41, so as to realize the extension and retraction drive of the single pole cutting electrode 51 by the push-pull piece 41, and to transmit single pole energy to the single pole cutting electrode.

[0061] The conducting pipe 412 is tightly sleeved on the cutting electrode connecting pipe 417 and located between the water sealing seat 414 and the push-pull piece 41, the conducting pipe 412 is used for limiting the moving track of the cutting electrode connecting pipe 417, avoiding the deviation of the cutting electrode connecting pipe 417 in the stretching and retracting process, the outer diameter of the conducting pipe 412 is at least 0.4mm larger than the inner cavity diameter of the push-pull piece 41, so as to ensure that the conducting pipe 412 can be stably positioned;

[0062] The limiting ring 411 is tightly fixed on the end of the cutting electrode connecting pipe 417 close to the push-pull piece 41, the conducting pipe 412 and the limiting ring 411 jointly limit the moving track of the cutting electrode connecting pipe 417, the limiting ring 411 is used for preventing the cutting electrode connecting pipe 417 from moving too far forward or backward, so as to ensure the stable stretching and retracting stroke of the monopolar cutting electrode 51 and avoid exceeding the safe range.

[0063] In the present application, as shown in the accompanying drawings, Figure 8 The handle assembly 4 is further provided with a conical spring sheet 413 sleeved on the conducting pipe 412, and the conical spring sheet 413 is located between the water sealing seat 414 and the push-pull piece 41; the conical spring sheet 413 is made of conductive material, and is used for realizing the elastic electrical connection between the monopolar circuit and the cutting electrode connecting pipe 417, that is, ensuring that the monopolar energy can be stably transmitted to the cutting electrode connecting pipe 417, and adapting to the forward and backward stretching and retracting movement of the cutting electrode connecting pipe 417, so as to avoid the disconnection of the connection caused by the loosening.

[0064] One end of the monopolar circuit close to the electrode assembly 5 is connected with a wire, the other end of the wire is electrically connected with the conical spring sheet 413, the conducting pipe 412 and the cutting electrode connecting pipe 417 are conductors, and the monopolar circuit is in conduction with the monopolar cutting electrode 51 through the conical spring sheet 413, the conducting pipe 412 and the cutting electrode connecting pipe 417.

[0065] In the present application, the handle assembly 4 is further provided with two bipolar wire metal rings 46 sleeved on the outer surface of the connector 415, and the connector 415 can rotate 360° relative to the bipolar wire metal ring 46;

[0066] As shown in the accompanying drawings, Figure 12 The insulator 53 is further provided with a bipolar electrocoagulation hemostatic electrode wire hole 533, the bipolar electrocoagulation hemostatic electrode wire hole 533 is used for the wire of the bipolar electrocoagulation hemostatic electrode 52 to pass out, and provides guidance and protection for the wire, two bipolar electrocoagulation hemostatic electrodes 52 are respectively connected with a wire, the other end of the wire passes through the bipolar electrocoagulation hemostatic electrode wire hole 533, and the two wires are electrically connected with the bipolar wire metal ring 46 one by one; one end of the bipolar circuit close to the electrode assembly 5 is connected with two wires with insulating outer layers, and the other end of the two wires is electrically connected with the bipolar wire metal ring 46 one by one.

[0067] In the present application, one end of the handle assembly 4 is further provided with a fixing pipe 49, and the fixing pipe 49 is connected with the handle assembly 4;

[0068] Wherein, the outer tube 54 is inserted into the fixed tube 49 at the end away from the insulator 53, and is fixed with the fixed tube 49 by bonding or heat shrink process to avoid loosening of the outer tube 54 during surgery; the rotating wheel 48 is fixed to the outer surface of the fixed tube 49 and is clamped with the shell 416 of the handle assembly 4, and when the rotating wheel 48 rotates around the axis of the shell 416, it drives the fixed tube 49, the outer tube 54 and the electrode assembly 5 to rotate synchronously, which facilitates the medical staff to adjust the angle of the electrode assembly 5 acting on the surgical site.

[0069] In this application, the monopolar cutting electrode 51 is a hook-shaped monopolar cutting electrode, a plate-shaped monopolar cutting electrode or other similar shaped cutting electrode.

[0070] In this application, the outer tube 54 is made of rigid material or flexible material, and a shorter length of rigid material is used for surgical cutting, a moderate length of rigid material is used for laparoscopic surgery, and a longer length of flexible material is used for soft endoscopy.

[0071] Through the above connection mode, the bipolar plug 1 and the monopolar plug 2 are inserted into the working host (energy input source) matched therewith, and the working mode of the front electrode cutter head is controlled by controlling the monopolar cutting button 42 and the bipolar coagulation button 43, and further the front and rear movement of the hook-shaped monopolar cutting electrode 51 is driven by the forward and backward pushing and pulling movement of the push-pull piece 41. When cutting, the push-pull piece 41 is pushed forward, the monopolar cutting electrode 51 is pushed out of the insulator 53, at this time the monopolar cutting button 42 is pressed, the monopolar cutting mode circuit is connected, the front electrode cutter head acts on the corresponding part of the human body, and then the cutting work is carried out; when coagulating, the push-pull piece 41 is pushed backward, the monopolar cutting electrode 51 is withdrawn into the insulator 53, at this time the bipolar coagulation button 43 is pressed, the bipolar coagulation mode circuit is connected, the front bipolar coagulation electrode cutter head acts on the corresponding part of the human body, and then the coagulation work is carried out; further, physiological saline can be injected from the liquid injection pipe 3 during cutting and coagulation, the injected liquid will flow out from the insulator water outlet hole 531, so as to achieve the functions of flushing and cooling, and at the same time, the phenomenon of adhesion can be reduced;

[0072] In actual surgical process, different lengths can be selected according to different surgical sites; different thicknesses and different outer tube materials (rigid outer tube or flexible outer tube) can be selected, such as surgical cutting, then a shorter rigid outer tube material product is selected; for laparoscopic surgery, a rigid outer tube material product with moderate length is selected; for soft endoscopy, a soft outer tube material product with longer specification is selected;

[0073] After the product selection is completed, when the operation is performed, according to the state occurred in the actual process, such as first pushing out the cutting electrode, pressing the cutting control button, cutting the human pathological part, if bleeding occurs in the cutting process, releasing the cutting control button, retracting the cutting electrode, pressing the electrocoagulation hemostasis control button, acting on the bleeding part, electrocoagulation hemostasis is performed, in this process, the liquid injection pipe can be used to inject water at any time, so as to achieve the functions of flushing and cooling, and the phenomenon of adhesion and the like can be reduced.

[0074] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only preferred examples of the utility model, and are not used to limit the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A medical electrode tip, characterized by, It comprises a single pole plug (2), a double pole plug (1), a handle assembly (4), a liquid injection pipe (3) and an electrode assembly (5); The single pole plug (2), the double pole plug (1) and the liquid injection pipe (3) are all installed in the handle assembly (4) and extend out of the handle assembly (4) at one end, and the electrode assembly (5) is connected with the handle assembly (4) and extends out of the handle assembly (4) at one end; The handle assembly (4) is provided with a rotating wheel (48) which can rotate by 360 degrees, a single pole circuit, a double pole circuit, a single pole cutting button (42) for controlling the on-off of the single pole circuit, a double pole coagulation button (43) for controlling the on-off of the double pole circuit and a push-pull piece (41), and the rotating wheel (48) drives the electrode assembly (5) to rotate synchronously when the rotating wheel (48) rotates; The electrode assembly (5) comprises a single pole cutting electrode (51), two double pole coagulation hemostatic electrodes (52), an insulator (53) and an outer tube (54), the insulator (53) is provided with a sliding groove (534), the single pole cutting electrode (51) is slidably arranged in the sliding groove (534) and is in transmission connection with the push-pull piece (41), and the push-pull piece (41) drives the single pole cutting electrode (51) to extend out of or retract into the insulator (53) when the push-pull piece (41) is pushed or pulled; the two double pole coagulation hemostatic electrodes (52) are respectively fixed on the two sides of the insulator (53) and are in electrical connection with the double pole circuit, and the single pole cutting electrode (51) is in electrical connection with the single pole circuit; The liquid injection pipe (3) is in sealed connection with a water inlet cavity (47) in the handle assembly (4) at one end for connecting with an external liquid supply device, and is provided with an insulator water inlet hole (532) and an insulator water outlet hole (531) which are in communication on the insulator (53), the insulator water inlet hole (532) is in communication with the water inlet cavity (47), and the outer tube (54) is sleeved on the outer side of one end of the insulator (53) and is connected with the handle assembly (4).

2. A medical electrode tip according to claim 1, characterized in that: The double pole plug (1) comprises two plastic insulating shells, three metal plugs are installed in the plastic insulating shells, the two metal plugs on the edge are respectively connected with a wire having an insulating outer layer, one end of the wire away from the metal plug extends to the outside of the plastic insulating shell and is connected with the double pole circuit in the handle assembly (4), the double pole circuit is in off state by default, and is in on state when the double pole coagulation button (43) is pressed.

3. The medical electrode tip of claim 1, wherein: The single pole plug (2) comprises one plastic insulating shell, one metal plug is installed in the plastic insulating shell, the metal plug is connected with a wire, one end of the wire away from the metal plug extends to the outside of the plastic insulating shell and is connected with the single pole circuit in the handle assembly (4), the single pole circuit is in off state by default, and is in on state when the single pole cutting button (42) is pressed.

4. The medical electrode tip of claim 1, wherein: The liquid injection pipe (3) is a high polymer pipe, and one end extending out of the handle assembly (4) is provided with a luer taper joint; The handle assembly (4) further comprises an outer shell (416) made of injection molded plastic material.

5. The medical electrode tip of claim 1, wherein: The handle assembly (4) is further provided with a connector (415) which can rotate by 360 degrees and a water sealing seat (414); The connector (415) is provided with a small hole in the middle part and located in the water inlet cavity (47), and each side of the connector (415) is provided with a sealing ring (44) for sealing the water inlet cavity (47); The connector (415) is threadedly connected to the water sealing seat (414) at one end, and a silica gel ring (45) is arranged at the connecting position of the connector (415) to enhance sealing.

6. A medical electrode tip according to claim 5, wherein: The handle assembly (4) is further provided with a cutting electrode connecting pipe (417), a conducting pipe (412) and a limiting ring (411). The cutting electrode connecting pipe (417) is fixed at one end to the monopolar cutting electrode (51), and is fixed at the other end to the push-pull piece (41) after sequentially penetrating the connector (415), the silica gel ring (45) and the water sealing seat (414). The conducting pipe (412) is tightly sleeved on the cutting electrode connecting pipe (417) and located between the water sealing seat (414) and the push-pull piece (41), and the outer diameter of the conducting pipe (412) is at least 0.4 mm larger than the inner cavity diameter of the push-pull piece (41). The limiting ring (411) is tightly fixed at one end of the cutting electrode connecting pipe (417) close to the push-pull piece (41), and the conducting pipe (412) and the limiting ring (411) jointly limit the movement track of the cutting electrode connecting pipe (417).

7. A medical electrode tip as defined in claim 6, wherein: The handle assembly (4) is further provided with a conical spring sheet (413) sleeved on the conducting pipe (412), and the conical spring sheet (413) is located between the water sealing seat (414) and the push-pull piece (41). The monopolar circuit is connected to a wire at one end close to the electrode assembly (5), the other end of the wire is electrically connected to the conical spring sheet (413), the conducting pipe (412) and the cutting electrode connecting pipe (417) are conductors, and the monopolar circuit is conducted with the monopolar cutting electrode (51) through the conical spring sheet (413), the conducting pipe (412) and the cutting electrode connecting pipe (417).

8. A medical electrode tip according to claim 5, wherein: The handle assembly (4) is further provided with two bipolar wire metal rings (46) sleeved on the outer surface of the connector (415), and the connector (415) can rotate 360° relative to the bipolar wire metal ring (46). The insulator (53) is further provided with a bipolar electrocoagulation hemostatic electrode wire hole (533), two bipolar electrocoagulation hemostatic electrodes (52) are respectively connected to a wire, the other end of the wire penetrates the bipolar electrocoagulation hemostatic electrode wire hole (533), and the two wires are electrically connected to the bipolar wire metal ring (46) one by one. The bipolar circuit is connected to two wires with insulating outer layers at one end close to the electrode assembly (5), and the other end of the two wires is electrically connected to the bipolar wire metal ring (46) one by one.

9. A medical electrode tip as defined in claim 4, wherein: The handle assembly (4) is further provided with a fixing pipe (49) at one end, the fixing pipe (49) is connected to the handle assembly (4); The outer pipe (54) is sleeved in the fixing pipe (49) away from the insulator (53), and is fixed to the fixing pipe (49) by bonding or heat shrink process; the rotating wheel (48) is fixed to the outer surface of the fixing pipe (49) and is clamped with the shell (416) of the handle assembly (4), and when the rotating wheel (48) rotates around the shell (416), the fixing pipe (49), the outer pipe (54) and the electrode assembly (5) rotate synchronously.

10. The medical electrode tip of claim 1, wherein: The monopolar cutting electrode (51) is a hook-shaped monopolar cutting electrode, a plate-shaped monopolar cutting electrode or a monopolar cutting electrode with similar shape.

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