Electrode sheet welding device and welding process for blood vessel sealing cutter

Abstract

The present application discloses an electrode sheet welding device and welding process for a blood vessel closing cutter, which relates to the technical field of radio frequency closing cutting surgical instruments, a shell and a rotating plate, a housing space with an opening upward is provided inside the shell, a welding head is provided on the top of the shell for laser welding; the rotating plate is provided in the housing space, the rotating plate is rotatably connected to the shell, the rotating axis of the rotating plate is horizontal and located at the midline position of the rotating plate, the upper and lower plate surfaces of the rotating plate are provided with a plurality of suction nozzles, and the suction nozzles located on the same surface are distributed at intervals to jointly receive the electrode sheet; an exhaust channel is provided inside the rotating plate, one end of the exhaust channel is connected to each suction nozzle, and the other end is used for externally connecting an exhaust member, and the exhaust member exhausts air inside the suction nozzle through the exhaust channel to form a negative pressure for adsorbing and fixing the electrode sheet. The present application has the effect of improving the welding efficiency of the electrode sheet.

Description

Technical Field

[0001] The present application relates to the technical field of radio frequency closed cutting surgical instruments, and in particular to an electrode sheet welding device and a welding process for a blood vessel closed cutting device. Background Art

[0002] Among radiofrequency closed cutting surgical instruments, "LigaSure" refers to a specific vascular closed cutting instrument, which uses electrical energy and pressure to liquefy and reorganize the collagen and elastin in the blood vessel wall. By outputting high-frequency electrical energy to the electrodes in the instrument and combining it with the pressure of the vascular clamp, the collagen and fibrin in the human tissue are melted and denatured, and the blood vessel wall is fused to form a transparent band, resulting in permanent lumen closure to provide hemostasis. Therefore, it is widely used in laparoscopic and open tumor surgery.

[0003] This type of blood vessel closing and cutting instrument generally includes an operating handle, a knife tube and a clamp head. There is a blade inside the knife tube for cutting the tissue clamped by the clamp head. The electrode sheet is installed in the clamp head at the end of the knife tube. When in use, it needs to be energized by a wire, so the electrode sheet needs to be welded and fixed together with the wire.

[0004] The welding of electrode sheets and wires is conventionally done manually, but manual welding is time-consuming and labor-intensive, and the welding quality may vary. Existing automatic welding devices weld one electrode sheet at a time, and after welding one electrode sheet, manual reloading and loading are required, making the entire welding process discontinuous and affecting welding efficiency. Summary of the invention

[0005] In order to improve the situation where the welding process of the electrode sheet is discontinuous and affects the overall welding efficiency, the present application provides an electrode sheet welding device and a welding process for a blood vessel closing cutter.

[0006] On the one hand, the present application provides an electrode sheet welding device for a blood vessel sealing cutter, which adopts the following technical solution: An electrode sheet welding device for a blood vessel sealing cutter, comprising A shell body, wherein an accommodating space opening upward is provided inside, and a welding head is provided on the top of the shell body for laser welding; A rotating plate is disposed in the accommodating space, the rotating plate is rotatably connected to the housing, the rotating axis of the rotating plate is horizontal and located at the midline of the rotating plate, and a plurality of suction nozzles are disposed on the upper and lower plate surfaces of the rotating plate, and the suction nozzles located on the same surface are spaced apart to jointly receive the electrode sheet; An exhaust channel is provided in the rotating plate, one end of which is connected to each suction nozzle, and the other end is used for an external exhaust member. The exhaust member exhausts air inside the suction nozzle through the exhaust channel to form a negative pressure for adsorbing and fixing the electrode sheet.

[0007] Optionally, the rotating plate includes an upper plate and a lower plate, both of which are provided with an exhaust channel, and the exhaust channels in the upper plate and the lower plate are independent of each other. Both the upper plate and the lower plate are provided with a stop valve at the position where the exhaust channel connects to the plate body, and the stop valve is used to cut off the exhaust channel inside the upper plate or the lower plate to stop the exhaust action of the upper plate or the lower plate alone.

[0008] Optionally, the air extraction channel is connected to an external air extraction member via a rotary joint.

[0009] Optionally, a locking piece is provided on the inner side wall of the shell corresponding to the rotating plate. The locking piece is horizontally penetrated through the inner wall of the shell and is slidably connected to the shell. A locking hole is provided on the side wall of the rotating plate close to the locking piece. When the rotating plate is rotated to a horizontal state, the locking piece is slidably penetrated into the locking hole.

[0010] Optionally, a wire placement plate is provided on one side of the top of the accommodating space of the shell, and the wire placement plate is placed horizontally to support the wire to be welded. A plurality of horizontal conveying rollers are rotatably connected to the top of the wire placement plate. The plurality of conveying rollers are spaced apart along the length direction of the wire placement plate, and the length direction of the conveying rollers is perpendicular to the length direction of the wire placement plate. A gap is left between the conveying rollers and the guide placement plate for the wire to pass through. A vertical material discharge trough is provided on one side of the wire placement plate of the shell.

[0011] Optionally, the shell is provided with a receiving plate inclined downward in the accommodating space, the receiving plate is located below the rotating plate, and one side of the receiving plate is provided with a push plate capable of sliding along the inclined direction of the receiving plate, the push plate is arranged vertically to the receiving plate, and the push plate slides obliquely downward along the length direction of the receiving plate to push the welded electrode sheet out of the shell.

[0012] Optionally, a shock-absorbing pad is provided on the top surface of the receiving plate, and the shock-absorbing pad is made of a soft material.

[0013] Optionally, the suction nozzle is made of soft rubber or silicone material.

[0014] On the other hand, the present application provides an electrode sheet welding process for a blood vessel sealing cutter, which uses the electrode sheet welding device for a blood vessel sealing cutter as described above to weld the electrode sheet and the wire, including the following steps: S1: Place the shell at the rear end of the electrode sheet cleaning and drying production line, and connect the housing space of the shell to the outlet of the electrode sheet conveyor belt. S2: Start the rotating plate, rotate any side of the rotating plate equipped with a suction nozzle to an inclined direction toward the outlet of the electrode sheet conveyor belt, start the vacuum part to evacuate the internal space of the suction nozzle to form a negative pressure, start the electrode sheet conveyor belt and convey the electrode sheets one by one to the rotating plate, when an electrode sheet falls on the inclined rotating plate and is fixed by the suction nozzle, the rotating plate rotates to a horizontal state, and the welding head starts to weld a group of electrode sheets and wires; S3: When a group of electrode sheets and wires are welded, the rotating plate is turned over to the other side and tilted toward the direction of the electrode sheet conveyor belt outlet, and then the electrode sheet conveyor belt is started to convey the next electrode sheet to the rotating plate. After the suction nozzle on the other side of the rotating plate adsorbs and fixes the electrode sheet, the rotating plate is turned over to a horizontal state. At this time, the suction nozzle at the bottom stops sucking air, and the welded electrode sheet falls freely, while the electrode sheet above the rotating plate continues to perform the welding action; S4: Repeat steps S2-S3 until all electrode sheets are welded.

[0015] In summary, the present application includes at least one of the following beneficial effects: 1. The external suction part evacuates the suction nozzle through the suction channel, so that the internal space of the suction nozzle forms a negative pressure. After the electrode sheet falls on the suction nozzle, it can be firmly adsorbed by the suction nozzle, thereby temporarily fixing the electrode sheet on the suction nozzle. At this time, it is convenient for the welding head to weld the electrode sheet and the wire. When an electrode sheet is welded, the rotating plate drives the electrode sheet to rotate, and the welded electrode sheet is rotated to the bottom of the rotating plate. At this time, the suction nozzle corresponding to the bottom stops pumping, and the electrode sheet falls by its own gravity to complete automatic unloading. The suction nozzle rotated to the top can re-adsorb and fix the motor sheet to be welded; 2. When an electrode sheet is welded, the rotating plate rotates the welded electrode sheet to the bottom of the rotating plate. During this process, when the suction nozzle originally at the bottom gradually rotates to tilt toward the direction of the electrode sheet conveyor belt outlet, the electrode sheet to be welded on the electrode sheet conveyor belt can fall directly onto the inclined suction nozzle as the conveyor belt moves, and is received and fixed by the suction nozzle, thereby the next round of welding can be carried out without interruption. The entire welding process is continuous, which effectively improves the work efficiency of electrode sheet welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a cross-sectional schematic diagram showing the overall structure of the welding device in Example 1 of the present application; Figure 2 is a schematic diagram showing the appearance of an electrode sheet according to Example 1 of the present application; Figure 3 yes Figure 1 An enlarged schematic diagram at A; Figure 4 It is a top view schematic diagram showing the structure of the welding device according to Example 1 of the present application.

[0017] Explanation of the accompanying drawings: 1. Shell; 11. Accommodating space; 12. Bracket; 13. Welding head; 14. First driving member; 15. Driving gear; 16. Driven gear; 17. Wire placement plate; 18. Conveying roller; 19. Feed chute; 2. Rotating plate; 21. Suction nozzle; 22. Upper plate; 23. Lower plate; 24. Exhaust channel; 25. Stop valve; 3. Electrode sheet; 31. Fixed plane; 32. Docking protrusion; 4. Wire; 5. Rotating joint; 6. Second driving member; 7. Receiver plate; 71. Shockproof pad; 8. Push plate; 9. Third driving member. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1-4 This application is described in further detail. Example 1

[0019] Embodiment 1 of the present application discloses an electrode sheet welding device for a blood vessel sealing cutter, referring to Figure 1 and Figure 2 The electrode sheet welding device includes a shell 1 and a rotating plate 2, wherein a vertical accommodating space 11 with an opening upward is provided inside the shell 1, the rotating plate 2 is provided in the accommodating space 11, and the two sides of the rotating plate 2 are rotatably connected to the shell 1 respectively, the rotating axis of the rotating plate 2 is horizontal and located at the midline position of the rotating plate 2, so that the rotating plate 2 rotates around its own midline, and the accommodating space 11 has enough space for the rotating plate 2 to rotate, so that the rotating plate 2 will not interfere with the inner wall of the shell 1 when rotating. A welding head 13 is fixed to the top of the shell 1 through a bracket 12, and the welding head 13 is placed corresponding to the position of the electrode sheet 3 welding wire 4, and the electrode sheet 3 and the wire 4 can be laser welded. The welding head 13 refers to the existing laser welding machine and will not be repeated here.

[0020] The electrode sheet 3 includes a fixing plane 31 and a docking protrusion 32. During welding, the fixing plane 31 is placed horizontally and downward on the surface of the rotating plate 2, and the side of the electrode sheet 3 fixed with the docking protrusion 32 faces upward for welding and fixing with one end of the wire 4.

[0021] Reference Figures 1 to 3 A plurality of suction nozzles 21 are disposed on both the upper and lower surfaces of the rotating plate 2 . The suction nozzles 21 on the same surface are spaced apart and cover the fixed plane 31 of the electrode sheet 3 to jointly receive the electrode sheet 3 .

[0022] The rotating plate 2 includes an upper plate 22 and a lower plate 23 which are independent of each other, and an air extraction channel 24 is provided in the upper plate 22 and the lower plate 23. The air extraction channels 24 in the upper plate 22 and the lower plate 23 are independent of each other. One end of the air extraction channel 24 is connected to each suction nozzle 21 through multiple branches, and the other end is connected to an external air extraction member through a rotating joint 5. The air extraction member is a vacuum pump, so that the rotating plate 2 can continuously extract air from the suction nozzle 21 through the air extraction channel 24 using the external air extraction member while rotating around its own midline, so as to form a negative pressure inside the suction nozzle 21. After the fixing plane 31 of the electrode sheet 3 falls on the suction nozzle 21, it can be stably adsorbed and fixed by multiple suction nozzles 21 at the same time. The suction nozzle 21 can be made of soft rubber or silicone material to avoid leaving scratches on the electrode sheet 3 when in contact with the electrode sheet 3.

[0023] In order to enable the exhaust passages 24 of the upper plate 22 and the lower plate 23 to operate independently, both the upper plate 22 and the lower plate 23 are provided with a shut-off valve 25 in the exhaust passages 24. The shut-off valve 25 is arranged at one end of the exhaust passage 24 located in the plate body of the rotating plate 2 away from the suction nozzle 21. The shut-off valve 25 is used to shut off the exhaust passage 24 inside the upper plate 22 or the lower plate 23 individually to stop the exhaust action of the upper plate 22 or the lower plate 23 individually, so that the upper plate 22 and the lower plate 23 can independently complete the adsorption or removal of the electrode sheet 3.

[0024] The housing 1 is provided with a driving assembly on one side of the rotating plate 2, and the driving assembly includes a first driving member 14, a driving gear 15 and a driven gear 16, wherein the driven gear 16 is fixed to the rotating plate 2 through a butt joint, and the driven gear 16 is coaxially fixed to the outside of the butt joint, and one end of the butt joint is simultaneously connected to the air extraction channel 24 of the upper plate 22 and the lower plate 23, and the other end is connected to the rotating joint 5. The first driving member 14 can be a stepping motor, and the output shaft of the first driving member 14 is coaxially fixed to the driving gear 15, and the driving gear 15 is meshed with the driven gear 16. The first driving member 14 drives the butt joint to rotate through the meshed driving gear 15 and the driven gear 16, and the butt joint drives the rotating plate 2 to rotate.

[0025] In order to enable the rotating plate 2 to maintain a horizontal state when the electrode sheet 3 is welded, a locking piece is provided on the inner side wall of the shell 1 corresponding to the rotating plate 2. In embodiment 1 of the present application, the locking piece is a locking rod, one end of which is horizontally penetrated through the inner wall of the shell 1 and is slidably connected to the shell 1. A second driving piece 6 is provided at one end of the rotating plate 2 located in the shell 1. The second driving piece 6 can be an electric telescopic rod. A locking hole is provided on the side wall of the rotating plate 2 near the locking piece. When the rotating plate 2 rotates to a horizontal state, the second driving piece 6 drives the locking piece to extend horizontally until it is penetrated into the locking hole.

[0026] Reference Figure 1 and Figure 4The housing 1 is fixed with a wire placement plate 17 on one side of the top of the accommodating space 11. The wire placement plate 17 is placed horizontally and is used to support the wire 4 to be welded. The housing 1 is rotatably connected with a plurality of horizontal conveying rollers 18 on the top of the wire placement plate 17. The plurality of conveying rollers 18 are spaced along the length direction of the wire placement plate 17, and the length direction of the conveying rollers 18 is perpendicular to the length direction of the wire placement plate 17. The specific number of conveying rollers 18 can be increased or decreased according to the actual length of the wire placement plate 17. There is a gap between the conveying rollers 18 and the guide placement plate for the wire 4 to pass through. The conveying rollers 18 can be driven to rotate by a motor, and the guide passes between the conveying rollers 18 and the guide placement plate, and the conveying rollers 18 continuously convey the wire 4 to the electrode sheet 3 to be welded. In order to facilitate the falling of the wire 4, the housing 1 is provided with a vertical feeding trough 19 on one side of the wire placement plate 17. The rotating plate 2 drives the welded electrode sheet 3 and the wire 4 to rotate, and the free end of the wire 4 can be rotated into the drop trough for falling, reducing the obstruction to the wire 4.

[0027] In order to receive the welded electrode sheet 3, the housing 1 is provided with a receiving plate 7 tilted downward in the accommodating space 11. The receiving plate 7 is located below the rotating plate 2. The top surface of the receiving plate 7 is paved with a shockproof pad 71. The shockproof pad 71 is made of a soft material, such as silicone or rubber. The shockproof pad 71 can prevent the falling electrode sheet 3 from being damaged. A push plate 8 that can slide along the tilt direction of the receiving plate 7 is provided on one side of the receiving plate 7. The push plate 8 is arranged vertically with the receiving plate 7. The push plate 8 slides tilted downward along the length direction of the receiving plate 7 to push the welded electrode sheet 3 out of the housing 1. A third driving member 9 is fixed at a position corresponding to the push plate 8 outside the housing 1. The third driving member 9 can be an electric push rod. The output shaft of the third driving member 9 is fixed to the push plate 8. The third driving member 9 can drive the push plate 8 to slide along the tilt direction of the receiving plate 7, thereby pushing the electrode sheet 3 that falls on the receiving plate 7 out of the housing 1.

[0028] The implementation principle of an electrode sheet welding device for a blood vessel closing cutter in Example 1 of the present application is as follows: an external vacuum component evacuates the suction nozzle 21 through the vacuum channel 24, so that a negative pressure is formed in the internal space of the suction nozzle 21, and the electrode sheet 3 can be firmly adsorbed by the suction nozzle 21 after falling on the suction nozzle 21, thereby temporarily fixing the electrode sheet 3 on the suction nozzle 21, so that it is convenient for the welding head 13 to weld the electrode sheet 3 and the wire 4. When one electrode sheet 3 is welded, the rotating plate 2 drives the electrode sheet 3 to rotate, and rotates the welded electrode sheet 3 to the bottom of the rotating plate 2. At this time, the suction nozzle 21 corresponding to the bottom stops evacuating, and the electrode sheet 3 falls by its own gravity to complete automatic unloading, and the suction nozzle 21 rotated to the top can re-adsorb and fix the motor sheet to be welded. Example 2

[0029] Embodiment 2 of the present application discloses an electrode sheet welding process for a blood vessel sealing cutter, which uses the electrode sheet welding device for a blood vessel sealing cutter as described in Embodiment 1 to weld the electrode sheet 3 and the wire 4, including the following steps: S1: Place the housing 1 at the rear end of the electrode sheet 3 cleaning and drying production line, and connect the housing space 11 of the housing 1 to the outlet of the electrode sheet 3 conveyor belt. S2: Start the rotating plate 2, rotate any side of the rotating plate 2 equipped with the suction nozzle 21 to the direction of tilting toward the wire placement plate 17, start the vacuum part to exhaust air in the internal space of the suction nozzle 21 to form a negative pressure, start the electrode sheet 3 conveyor belt and convey the electrode sheets 3 one by one to the rotating plate 2, when an electrode sheet 3 falls on the tilted rotating plate 2 and is fixed by the suction nozzle 21, the rotating plate 2 rotates to a horizontal state, and the welding head 13 starts to weld a group of electrode sheets 3 and wires 4; S3: After a group of electrode sheets 3 and wires 4 are welded, the rotating plate 2 is turned over to the other side and tilted toward the direction of the electrode sheet 3 conveyor belt outlet, and then the conveyor belt of the electrode sheet 3 is started to convey the next electrode sheet 3 to the rotating plate 2. After the suction nozzle 21 on the other side of the rotating plate 2 adsorbs and fixes the electrode sheet 3, the rotating plate 2 is further turned over to a horizontal state. At this time, the suction nozzle 21 at the bottom stops sucking air, and the welded electrode sheet 3 falls freely, while the electrode sheet 3 located above the rotating plate 2 continues to perform the welding action; S4: Repeat steps S2-S3 until all electrode sheets 3 are welded.

[0030] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An electrode sheet welding device for a blood vessel sealing cutter, characterized in that: include A shell body, wherein an accommodating space opening upward is provided inside, and a welding head is provided on the top of the shell body for laser welding; A rotating plate is disposed in the accommodating space, the rotating plate is rotatably connected to the housing, the rotating axis of the rotating plate is horizontal and located at the midline of the rotating plate, and a plurality of suction nozzles are disposed on the upper and lower plate surfaces of the rotating plate, and the suction nozzles located on the same surface are spaced apart to jointly receive the electrode sheet; An exhaust channel is provided in the rotating plate, one end of which is connected to each suction nozzle, and the other end is used for an external exhaust member. The exhaust member exhausts air inside the suction nozzle through the exhaust channel to form a negative pressure for adsorbing and fixing the electrode sheet.

2. The electrode sheet welding device for a blood vessel sealing cutter according to claim 1, characterized in that: The rotating plate includes an upper plate and a lower plate, each of which is provided with an exhaust channel, and the exhaust channels in the upper plate and the lower plate are independent of each other. Both the upper plate and the lower plate are provided with a stop valve at the position where the exhaust channel connects to the plate body, and the stop valve is used to cut off the exhaust channel inside the upper plate or the lower plate to stop the exhaust action of the upper plate or the lower plate alone.

3. The electrode sheet welding device for a blood vessel sealing cutter according to claim 2, characterized in that: The air extraction channel is communicated with an external air extraction member through a rotary joint.

4. The electrode sheet welding device for a blood vessel sealing cutter according to claim 1, characterized in that: A locking piece is provided on the inner side wall of the shell corresponding to the rotating plate. The locking piece is horizontally penetrated through the inner wall of the shell and is slidably connected to the shell. A locking hole is opened on the side wall of the rotating plate close to the locking piece. When the rotating plate is rotated to a horizontal state, the locking piece is slidably penetrated into the locking hole.

5. The electrode sheet welding device for a blood vessel sealing cutter according to claim 1, characterized in that: The shell is provided with a wire placement plate on one side of the top of the accommodating space. The wire placement plate is placed horizontally and is used to support the wire to be welded. A plurality of horizontal conveying rollers are rotatably connected to the top of the wire placement plate. The plurality of conveying rollers are spaced apart along the length direction of the wire placement plate, and the length direction of the conveying rollers is perpendicular to the length direction of the wire placement plate. A gap is left between the conveying rollers and the guide placement plate for the wire to pass through. The shell is provided with a vertical material discharge trough on one side of the wire placement plate.

6. The electrode sheet welding device for a blood vessel sealing cutter according to claim 1, characterized in that: The shell is provided with a receiving plate inclined downward in the accommodating space, the receiving plate is located below the rotating plate, one side of the receiving plate is provided with a push plate that can slide along the inclined direction of the receiving plate, the push plate is vertically arranged with the receiving plate, and the push plate slides downward in an inclined direction along the length direction of the receiving plate to push the welded electrode sheet out of the shell.

7. The electrode sheet welding device for a blood vessel sealing cutter according to claim 6, characterized in that: The top surface of the receiving plate is provided with a shock-absorbing pad, which is made of soft material.

8. The electrode sheet welding device for a blood vessel sealing cutter according to claim 1, characterized in that: The suction nozzle is made of soft rubber or silicone material.

9. A welding process for electrode sheets of a blood vessel sealing cutter, characterized in that: Using the electrode sheet welding device for a blood vessel sealing cutter as described in any one of claims 1 to 8 to weld the electrode sheet and the wire comprises the following steps: S1: Place the shell at the rear end of the electrode sheet cleaning and drying production line, and connect the housing space of the shell to the outlet of the electrode sheet conveyor belt. S2: Start the rotating plate, rotate any side of the rotating plate equipped with a suction nozzle to an inclined direction toward the outlet of the electrode sheet conveyor belt, start the vacuum part to evacuate the internal space of the suction nozzle to form a negative pressure, start the electrode sheet conveyor belt and convey the electrode sheets one by one to the rotating plate, when an electrode sheet falls on the inclined rotating plate and is fixed by the suction nozzle, the rotating plate rotates to a horizontal state, and the welding head starts to weld a group of electrode sheets and wires; S3: When a group of electrode sheets and wires are welded, the rotating plate is turned over to the other side and tilted toward the direction of the electrode sheet conveyor belt outlet, and then the electrode sheet conveyor belt is started to convey the next electrode sheet to the rotating plate. After the suction nozzle on the other side of the rotating plate adsorbs and fixes the electrode sheet, the rotating plate is turned over to a horizontal state. At this time, the suction nozzle at the bottom stops sucking air, and the welded electrode sheet falls freely, while the electrode sheet above the rotating plate continues to perform the welding action; S4: Repeat steps S2-S3 until all electrode sheets are welded.

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