A bipolar ultrasonic shears handle assembly and a rotatable bipolar ultrasonic shears

Abstract

The utility model belongs to the technical field of medical equipment, especially be related to a bipolar ultrasonic knife forceps rod subassembly. The utility model discloses in view of the existing rotatable ultrasonic knife rotating wheel pin in the use process because need drive forceps rod subassembly and transducer rotation, its rubber coating breakage possibly leads to bipolar short circuit, causes the bipolar function failure of ultrasonic bipolar knife problem, provide a bipolar ultrasonic knife forceps rod subassembly, through first fixed structure makes the outer tube and rotating wheel fixed, the inner tube passes through the fixed mode of second fixed structure and rotating wheel, makes rotating wheel through pin column directly drive waveguide tube rotation and has no contact with outer tube and inner tube, avoids the short circuit problem that the pin column of traditional rotating wheel connection drives inner and outer tube and waveguide tube rotation because the insulating rubber coating of edge breaks down. The utility model also provides the specific implementation scheme of application above-mentioned bipolar ultrasonic knife forceps rod subassembly in a rotatable bipolar ultrasonic knife.

Description

Technical Field

[0001] This utility model belongs to the field of medical equipment technology, and in particular relates to a bipolar ultrasonic scalpel forceps assembly and a rotatable bipolar ultrasonic scalpel. Background Technology

[0002] Mainstream ultrasonic scalpels use a rotating pin (a metal pin wrapped in silicone or other flexible material) on the rotating wheel to rotate the entire clamp assembly (including inner and outer tubes, ultrasonic waveguide, etc.) and the transducer connected to the waveguide. Even if damaged, the silicone rebound will not cause adverse consequences. However, in an ultrasonic bipolar scalpel, the waveguide is one stage, and the inner and outer tubes-clamp head is another. During bipolar energy transmission, insulation between the two stages must be maintained. During use, the rotating pin needs to drive the clamp assembly and transducer to rotate. Damage to the silicone coating may cause a bipolar short circuit, resulting in the failure of the bipolar function of the ultrasonic bipolar scalpel.

[0003] For example, a Chinese invention patent application discloses a highly integrated high-frequency ultrasound system and its working method [Application No.: CN202310098396.7]. This invention includes a high-frequency ultrasonic scalpel connected to an ultrasonic transducer. The ultrasonic transducer is equipped with an integrated high-frequency multi-mode ultrasonic device. The high-frequency ultrasonic scalpel includes an ultrasonic catheter connected to a composite handle. The bipolar circuit between the integrated high-frequency multi-mode ultrasonic device and the composite handle is connected to the ultrasonic circuit of the ultrasonic catheter using a parasitic circuit structure.

[0004] This invention has advantages such as high flexibility of use and good ultrasonic cutting and electrocoagulation hemostasis effects. However, it still causes the rotating wheel pin to drive the waveguide, inner tube, outer tube and insulating tube and other structures to rotate together. This can easily lead to bipolar function failure after the outer insulation structure of the rotating wheel pin is damaged. Summary of the Invention

[0005] This utility model addresses the aforementioned problems by providing a bipolar ultrasonic scalpel clamp assembly, comprising an inner tube, an outer tube, an ultrasonic scalpel assembly, and a rotating wheel; the ultrasonic scalpel assembly includes a waveguide and an insulating tube, the rotating wheel is nested outside the outer tube, and the inner tube is nested inside the outer tube; the waveguide is provided with an elastic protrusion to allow the waveguide and the insulating tube to be interference-fitted; it also includes a pin that sequentially passes through the rotating wheel, the outer tube, the inner tube, and the ultrasonic scalpel assembly, the rotating wheel drives the ultrasonic scalpel assembly to rotate through the pin and does not contact the outer tube and the inner tube during rotation; the outer tube is fixed to the rotating wheel by a first fixing structure, and the inner tube is fixed to the rotating wheel by a second fixing structure.

[0006] Preferably, the first fixing structure includes a screw, a first screw hole located on the rotating wheel and a second screw hole located on the outer tube, the screw passing through the first screw hole and the second screw hole.

[0007] Preferably, the second fixing structure includes a fixing sleeve fixed to one side of the inner tube, and the fixing sleeve is detachably connected to the rotating wheel.

[0008] Preferably, the fixing sleeve includes a pin, and the rotating wheel includes a slot, wherein the pin is inserted into the slot to achieve interference in the rotation direction of the rotating wheel.

[0009] Preferably, it also includes a rubber ring, the waveguide includes a slightly reduced diameter rubber-coated area, the rubber ring is fitted onto the rubber-coated area to form an elastic protrusion, and the waveguide is interference-fitted by the rubber ring and the insulating tube.

[0010] Preferably, the waveguide has an annular protrusion on the side away from the rotor, and the annular protrusion fits against the inner wall of the inner tube.

[0011] Preferably, the rotating wheel is fixed with a metal ring, the rotating wheel has a conductive socket, and also includes a conductive sheet, which passes through the conductive socket and is electrically connected to the metal ring and the outer tube.

[0012] This utility model also includes a rotatable bipolar ultrasonic scalpel using the above-mentioned bipolar ultrasonic scalpel clamp rod assembly, and further includes a transducer, a housing, clamps and a handle assembly. The handle assembly operates the outer tube to pull the clamp head to open and close, and the inner tube is used to hinge the clamp head; the transducer is fixedly connected to the tail of the waveguide.

[0013] Specifically, the transducer includes an amplitude transformer, which is threadedly connected to the tail end of the waveguide.

[0014] Compared with existing technologies, the advantages of this utility model are: This invention achieves the distribution of rotational torque by setting a first fixed structure to drive the outer tube, setting a second fixed structure to drive the inner tube, and driving the waveguide through a pin. It also avoids the problem of bipolar short circuit caused by electrical conduction between the inner and outer tubes and the waveguide due to the breakage of the pin insulation layer. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the bipolar ultrasonic scalpel clamp rod assembly described in this utility model; Figure 2 for Figure 1 AA section view; Figure 3 for Figure 2 Enlarged view of a portion; Figure 4 This is an exploded view of a bipolar ultrasonic scalpel clamp rod assembly according to the present invention; Figure 5 Figure 1 shows a rotatable bipolar ultrasonic scalpel according to the present invention. Figure 6 for Figure 5 Exploded view of the area; Figure 7 for Figure 6 A schematic diagram of the state from another perspective; Figure 8 for Figure 6 Further exploded view; In the diagram: Inner tube 1, outer tube 2, ultrasonic scalpel assembly 3, rotating wheel 4, waveguide 31, insulating tube 32, elastic protrusion 311, pin 5, first fixing structure 6, second fixing structure 7, screw 61, first screw hole 41, second screw hole 21, fixing sleeve 71, insertion post 711, slot 42, rubber ring 8, elastic protrusion 311, rubber-coated area 312, annular protrusion 313, metal ring 9, conductive socket 43, conductive sheet 10, transducer 11, outer shell 12, pliers head 13, amplitude transformer 14, handle assembly 15. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] This utility model provides a bipolar ultrasonic scalpel clamp rod assembly, such as... Figure 1-4 As shown, the device includes an inner tube 1, an outer tube 2, an ultrasonic scalpel assembly 3, and a rotating wheel 4. The ultrasonic scalpel assembly 3 includes a waveguide 31 and an insulating tube 32. The rotating wheel 4 is nested outside the outer tube 2, and the inner tube 1 is nested inside the outer tube 2. The waveguide 31 is provided with an elastic protrusion 311, which allows the waveguide 31 to be press-fitted to the insulating tube 32. The device also includes a pin 5 that passes through the rotating wheel 4, the outer tube 2, the inner tube 1, and the ultrasonic scalpel assembly 3 in sequence. The rotating wheel 4 drives the ultrasonic scalpel assembly 3 to rotate through the pin 5 and does not contact the outer tube 2 and the inner tube 1 during rotation. The outer tube 2 is fixed to the rotating wheel 4 by a first fixing structure 6, and the inner tube 1 is fixed to the rotating wheel 4 by a second fixing structure 7.

[0018] In this invention, rotating the wheel 4 causes the ultrasonic scalpel assembly 3 to rotate via the pin 5, which in turn causes the outer tube 2 to rotate via the first fixing structure 6, and the inner tube 1 to rotate via the second fixing structure 7. The pin 5 passes through the outer tube 2 and the inner tube 1 but does not contact them, thus preventing electrical conduction between the inner tube 1, the outer tube 2, and the waveguide 3.

[0019] Preferred, such as Figure 1-3 As shown, the first fixing structure 6 includes a screw 61, a first screw hole 41 located in the rotating wheel 4 and a second screw hole 21 located in the outer tube 2. The screw 61 passes through the first screw hole 41 and the second screw hole 21 to fix the outer tube 2 and the rotating wheel 4.

[0020] Preferably, the second fixing structure 7 includes a fixing sleeve 71 fixed to one side of the inner tube 1, and the fixing sleeve 71 is detachably connected to the rotating wheel 4.

[0021] Specifically, such as Figure 1 , 4 As shown, the fixed sleeve 71 includes a pin 711, and the rotating wheel 4 includes a slot 42. The pin 711 is inserted into the slot 42 to achieve interference in the rotation direction of the rotating wheel 4. That is, the fixed sleeve 71 and the rotating wheel 4 are connected in a pluggable manner. When the rotating wheel 4 rotates, it can drive the fixed sleeve 71 to rotate, thereby driving the inner tube 1 to rotate.

[0022] Preferably, the interference fit fixing method of the waveguide 31 and the insulating tube 32 is as follows: the waveguide 31 includes a slightly reduced diameter rubber-coated area 312, and an elastic rubber ring 8 is fitted onto the rubber-coated area 312 to form an elastic protrusion 311. The waveguide 31 is interference-fitted by the rubber ring 8 and the insulating tube 32. During installation, the outer insulating tube 32 is forcefully fitted onto the rubber ring 8.

[0023] Preferred, such as Figure 2 , 4 As shown, the waveguide 31 has an annular protrusion 313 on the side away from the rotor 4, and the annular protrusion 313 fits against the inner wall of the inner tube 1. This structure can prevent liquid leakage between the insulating tube 32 and the inner tube 1.

[0024] Preferred, such as Figure 1 , 8 As shown, the rotating wheel 4 is fixed with a metal ring 9, the rotating wheel 4 has a conductive socket 43, and also includes a conductive sheet 10. The conductive sheet 10 passes through the conductive socket 43 and electrically connects the metal ring 9 and the outer tube 2, thereby establishing a primary conduction through the outer tube 2.

[0025] The aforementioned bipolar ultrasonic scalpel clamp assembly was developed for use in a rotatable bipolar ultrasonic scalpel. In addition to the aforementioned bipolar ultrasonic scalpel clamp assembly, the rotatable bipolar ultrasonic scalpel may also include... Figure 5-8 As shown, it also includes a transducer 11, a housing 12, a clamp head 13, and a handle assembly 15. The handle assembly 15 operates the outer tube 2 to pull the clamp head 13 to open and close, and the inner tube 1 is used to hinge the clamp head 13. The transducer 11 is fixedly connected to the tail of the waveguide 31.

[0026] Furthermore, such as Figure 6-8 As shown, the transducer 11 includes an amplitude transformer 14, which is threadedly connected to the tail of the waveguide 31. The amplitude transformer not only transmits energy but also conducts electricity.

[0027] The working principle of this invention is as follows: Compared to traditional rotatable ultrasonic scalpels that use pins to drive the inner and outer tubes and waveguide to rotate together, this invention uses a rotating wheel 4 to drive the ultrasonic scalpel assembly 3 to rotate via a pin 5. A screw 61 passes through both the first screw hole 41 and the second screw hole 21 to drive the outer tube 2 to rotate, and a pin 711 on the fixing sleeve 71 to drive the inner tube 1 to rotate. The pin 5 only contacts the waveguide 31 to drive its rotation, without contacting the inner tube 1 or the outer tube 2, thus preventing short circuits. Then, the waveguide 31 drives the insulating tube 32 to rotate via the elastic protrusion 311. In use, the tip of the ultrasonic scalpel is inserted into the patient's body through the puncture port. Rotating the rotating wheel 4 drives the inner tube 1 and outer tube 2 to rotate, thereby rotating the clamp head 13 to the appropriate position. The handle assembly 15 controls the pulling of the outer tube 2 so that the clamp head 13 and the tip of the waveguide 31 cooperate to clamp the tissue. Ultrasonic energy is transmitted through the transducer 11, passes through the amplitude transformer 14 to the waveguide 31, and is converted into vibration. The energy of the vibration is converted into heat energy on the tissue, achieving the effect of cutting the tissue. The annular protrusion 313 prevents leakage between the insulating tube 32 and the inner tube 1. When a bipolar function is required to achieve a sealing effect, such as... Figure 6 , 7 As shown, cables run through the bottom of the outer casing 12 (internal wiring is not shown in the diagram due to trade secrets, but this does not hinder understanding of the object protected by this utility model). One current path leads to the conductive plate 10 via the metal ring 9 (a conductive clamping block or similar structure can be used to achieve contact between the metal ring 9 and the conductive plate 10), then to the outer tube 2 and finally to the clamp head 13. Another current path connects to the amplitude transformer 14 and is then transmitted to the head of the waveguide 31 to achieve bipolar function. Because the inner tube 1 and outer tube 2 are actually conductive due to the clamp head 13, the insulating tube 32 prevents short circuits caused by conductive connection between the inner tube 1 and the waveguide 31.

[0028] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0029] Although this document frequently uses terms such as inner tube 1, outer tube 2, ultrasonic scalpel assembly 3, rotating wheel 4, waveguide 31, insulating tube 32, elastic protrusion 311, pin 5, first fixing structure 6, second fixing structure 7, screw 61, first screw hole 41, second screw hole 21, fixing sleeve 71, insertion post 711, slot 42, rubber ring 8, elastic protrusion 311, rubber-coated area 312, annular protrusion 313, metal ring 9, conductive socket 43, conductive sheet 10, transducer 11, outer shell 12, pliers head 13, amplitude transformer 14, and handle assembly 15, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A bipolar ultrasonic scalpel clamp assembly, comprising an inner tube (1), an outer tube (2), an ultrasonic scalpel assembly (3), and a rotating wheel (4), characterized in that: The ultrasonic scalpel assembly (3) includes a waveguide (31) and an insulating tube (32). The rotating wheel (4) is nested outside the outer tube (2), and the inner tube (1) is nested inside the outer tube (2). The waveguide (31) is provided with an elastic protrusion (311) so that the waveguide (31) and the insulating tube (32) are interference-fitted. It also includes a pin (5) that passes through the rotating wheel (4), the outer tube (2), the inner tube (1) and the ultrasonic scalpel assembly (3) in sequence. The rotating wheel (4) drives the ultrasonic scalpel assembly (3) to rotate through the pin (5) and does not contact the outer tube (2) and the inner tube (1) during the rotation. The outer tube (2) is fixed by the first fixing structure (6) and the rotating wheel (4), and the inner tube (1) is fixed by the second fixing structure (7) and the rotating wheel (4).

2. The bipolar ultrasonic scalpel clamp assembly as described in claim 1, characterized in that: The first fixing structure (6) includes a screw (61), a first screw hole (41) located on the rotating wheel (4) and a second screw hole (21) located on the outer tube (2), wherein the screw (61) passes through the first screw hole (41) and the second screw hole (21).

3. The bipolar ultrasonic scalpel clamp assembly as described in claim 1, characterized in that: The second fixing structure (7) includes a fixing sleeve (71) fixed to one side of the inner tube (1), and the fixing sleeve (71) is detachably connected to the rotating wheel (4).

4. The bipolar ultrasonic scalpel clamp assembly as described in claim 3, characterized in that: The fixed sleeve (71) includes a pin (711), and the rotating wheel (4) includes a slot (42). The pin (711) is inserted into the slot (42) to achieve interference in the rotation direction of the rotating wheel (4).

5. The bipolar ultrasonic scalpel clamp assembly as described in claim 1, characterized in that: It also includes a rubber ring (8), the waveguide (31) includes a slightly reduced diameter rubber-coated area (312), the rubber ring (8) is fitted onto the rubber-coated area (312) to form an elastic protrusion (311), and the waveguide (31) is interference-fitted by the rubber ring (8) and the insulating tube (32).

6. The bipolar ultrasonic scalpel clamp assembly as described in claim 5, characterized in that: The waveguide (31) has an annular protrusion (313) on the side away from the wheel (4), and the annular protrusion (313) fits against the inner wall of the inner tube (1).

7. The bipolar ultrasonic scalpel clamp assembly as described in claim 1, characterized in that: The rotating wheel (4) is fixed with a metal ring (9), the rotating wheel (4) has a conductive socket (43), and also includes a conductive sheet (10). The conductive sheet (10) passes through the conductive socket (43) and is electrically connected to the metal ring (9) and the outer tube (2).

8. A rotatable bipolar ultrasonic scalpel, comprising the bipolar ultrasonic scalpel clamp assembly of claim 7, characterized in that: It also includes a transducer (11), a housing (12), a clamp head (13) and a handle assembly (15), wherein the handle assembly (15) manipulates the outer tube (2) to pull the clamp head (13) to open and close, and the inner tube (1) is used to hinge the clamp head (13); the transducer (11) is fixedly connected to the tail of the waveguide (31).

9. The rotatable bipolar ultrasonic scalpel as described in claim 8, characterized in that: The transducer (11) includes an amplitude transformer (14), which is threaded to the tail of the waveguide (31).

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