Pressure adjusting mechanism for ultrasonic knife jaw and ultrasonic knife device

Abstract

The utility model provides a pressure regulating mechanism for ultrasonic knife jaw and ultrasonic knife device, ultrasonic knife device is provided with inner, outer sleeve rod, jaw portion and knife tip portion, inner sleeve rod passes through the hollow cavity of outer sleeve rod and can generate axial movement relative to outer sleeve, jaw portion is movably connected with inner sleeve rod and outer sleeve rod, and the knife tip portion is movably connected with the inner sleeve rod and the outer sleeve rod. And the jaw part can be opened and closed by moving the inner sleeve rod. The pressure adjusting mechanism is provided with an elastic assembly and a lead screw assembly, the elastic assembly comprises an inner sleeve rod pull ring and an elastic part, the first end of the inner sleeve rod pull ring is fixedly connected with the near end of the inner sleeve rod, the second end of the inner sleeve rod pull ring abuts against the first end face of the elastic part, and the inner sleeve rod pull ring can extrude the elastic part and drive the inner sleeve rod to move. The lead screw assembly comprises a lead screw structure and an adjusting part, the first end of the adjusting part abuts against the second end face of the elastic part, the second end of the adjusting part is connected with the output end of the lead screw assembly, and the driving acting force of the inner sleeve rod pull ring on the inner sleeve rod can be adjusted by adjusting the feeding amount of the lead screw structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of ultrasonic scalpels, and particularly relates to a pressure regulating mechanism for the jaws of an ultrasonic scalpel and an ultrasonic scalpel device. Background Technique

[0002] An ultrasonic scalpel is a modern surgical tool, and its core function is to convert electrical energy into mechanical energy through a transducer. Specifically, when an ultrasonic frequency excitation current generated by an ultrasonic wave generator is transmitted to the transducer, the transducer generates mechanical vibration under the action of the excitation current. The vibration is transmitted and amplified through a waveguide rod to the tip of the waveguide rod. When the tip of the waveguide rod with high-speed vibration contacts tissues or organs, frictional heat will be generated, which will cause the proteins in the tissues or organs to denature, thereby achieving the effects of cutting and coagulation. Since the ultrasonic energy is concentrated and the action range is small, compared with traditional electrosurgical equipment, the ultrasonic scalpel provides higher precision and less thermal damage, and is widely used in multiple departments such as general surgery, gynecology, urology, neurosurgery, otolaryngology, etc. Especially in minimally invasive surgery and robot-assisted surgery, the advantages of the ultrasonic scalpel will be more obvious.

[0003] With the continuous improvement of technology and more stringent requirements for surgical operations, traditional ultrasonic scalpels are difficult to meet the requirements of some complex surgeries. For example, in the existing technology, traditional ultrasonic scalpels often do not have the function of automatically adjusting the clamping pressure. During a single clamping process, the clamping pressure between the tool tip and the jaws can only maintain a fixed value, or can only be manually adjusted by holding the handle. When a fixed pressure value is used as the clamping force between the tool tip and the jaws, in the face of changes in the thickness and hardness of the target tissue, too high a clamping pressure may cause excessive compression of the tissue, easily leading to medical accidents such as incisional necrosis, nerve injury or vascular injury, while too small a clamping pressure will result in low cutting efficiency, and even affect the hemostasis effect of the tissue and the postoperative recovery situation. When using the manual adjustment method, it has high requirements for the operator's operation skills, and the accuracy and stability of manual adjustment are poor, and the safety and high efficiency of the surgery cannot be guaranteed either. Summary of the Utility Model

[0004] The utility model aims to provide a pressure regulating mechanism for the jaws of an ultrasonic scalpel and an ultrasonic scalpel device to solve the technical problem that the existing ultrasonic scalpel device cannot realize the function of adjusting the jaw pressure.

[0005] To solve the above problems, the technical solution of the utility model is: a pressure regulating mechanism for the jaws of an ultrasonic scalpel, including an elastic component, a lead screw component and a controller;

[0006] The elastic component includes an inner sleeve rod pull ring, an elastic part, and an inner sleeve rod guide groove. The inner sleeve rod pull ring, the elastic part, and the inner sleeve rod guide groove are all hollow tube structures. The inner sleeve rod pull ring and the elastic part are sequentially sleeved outside the inner sleeve rod guide groove and are respectively slidably connected to the inner sleeve rod guide groove. The first end of the inner sleeve rod pull ring is fixedly connected to the proximal end of the inner sleeve rod, and the second end of the inner sleeve rod pull ring abuts against the first end face of the elastic part. The elastic component is configured such that when the ultrasonic knife device is started, the inner sleeve rod pull ring is extruded by a constant external force to squeeze the elastic part and generate a displacement, thereby driving the inner sleeve rod to generate a corresponding displacement amount along the displacement direction of the inner sleeve rod pull ring.

[0007] The screw rod assembly includes a screw rod structure and an adjusting member. The first end of the adjusting member abuts against the second end face of the elastic part, and the second end of the adjusting member is in transmission connection with the screw rod of the screw rod structure. The controller is used to receive a control signal and adjust the rotation amount of the screw rod of the screw rod structure based on the control signal. The screw rod assembly is configured such that when the ultrasonic knife device is started, the controller adjusts the rotation amount of the screw rod of the screw rod structure, controls the adjusting member to move towards or away from the second end face of the elastic part, changes the compression amount of the elastic part, and thereby adjusts the axial displacement direction and displacement amount of the inner sleeve rod.

[0008] Preferably, a limiting part is provided at the proximal end of the inner sleeve rod guide groove. The opposite surfaces of the limiting part and the second end of the inner sleeve rod pull ring cooperate to form a receiving space, and the receiving space is used to limit the displacement distance of the elastic part and the first end of the adjusting member.

[0009] Preferably, the elastic part is selected as a spring.

[0010] Preferably, an internal thread matching the screw rod is axially provided at the center of the second end of the adjusting member. The second end of the adjusting member is threadedly connected to the screw rod, and the screw rod is defined to be able to maintain a stationary axial position and achieve radial rotation.

[0011] Preferably, the screw rod structure further includes a guide tube. The guide tube is arranged in the same direction as the inner sleeve rod guide groove, and a hollow channel is axially opened inside the guide tube. A slide rail is provided on the inner wall of the hollow channel. The second end of the adjusting member and the screw rod are axially arranged through the hollow channel, and the second end of the adjusting member is slidably connected to the hollow channel inside the guide tube along the extending direction of the slide rail.

[0012] Preferably, the screw rod assembly further is provided with a motor. The motor is arranged on the side of the screw rod away from the adjusting member. The motor shaft is coaxially arranged and fixedly connected to the screw rod, and the motor is electrically connected to the controller. The controller is used to directly control the forward and reverse rotation amounts of the motor shaft.

[0013] Based on the same concept, the present utility model further provides an ultrasonic scalpel device, which adopts the pressure regulating mechanism for the ultrasonic scalpel jaw described in any one of the above, and further includes a sleeve rod unit, a tool tip portion, and a jaw portion;

[0014] The sleeve rod unit includes an inner sleeve rod and an outer sleeve rod. Both the inner sleeve rod and the outer sleeve rod are hollow tube structures. The inner sleeve rod is disposed through the inner cavity of the outer sleeve rod and is defined to be movable along the axis direction of the outer sleeve rod. The direction in which the inner sleeve rod moves towards its distal end side is set as the first direction, and the direction in which it moves towards its proximal end side is set as the second direction;

[0015] The tool tip portion is fixedly arranged at the distal end of the inner sleeve rod. The jaw portion is respectively movably connected to the inner sleeve rod and the outer sleeve rod. The tool tip portion and the jaw portion are configured such that when the inner sleeve rod moves in the first direction, the inner sleeve rod drives the jaw portion away from the tool tip portion, and when the inner sleeve rod moves in the second direction, the inner sleeve rod drives the jaw portion close to the tool tip portion.

[0016] Preferably, matching fixing holes are respectively provided at the proximal end of the jaw portion and the distal end of the outer sleeve rod. A rotating shaft is provided to pass through the fixing holes of the jaw portion and the outer sleeve rod in sequence for realizing the rotational connection between the jaw portion and the outer sleeve rod; a buckle is further provided at the proximal end of the jaw portion. A sliding groove is formed on the circumferential surface of the inner sleeve rod extending out of the outer sleeve rod port. The buckle is engaged in the sliding groove and can be slidably connected with the sliding groove along the extending direction of the sliding groove.

[0017] Preferably, a static handle and a dynamic handle are further provided. The static handle is fixedly connected to the ultrasonic scalpel housing in a fixed posture. The dynamic handle can generate displacement relative to the static handle under the action of an external force. A clamping groove is provided on the side of the pull ring of the inner sleeve rod, and a convex block is provided at the top of the dynamic handle. The convex block is engaged in the clamping groove. The dynamic handle and the elastic component are configured such that when the dynamic handle is driven by an external force to generate displacement, the dynamic handle can drive the pull ring of the inner sleeve rod to generate a fixed displacement amount.

[0018] Preferably, a transducer and a waveguide rod are further provided. The transducer is used to convert electrical energy into mechanical energy of high-frequency vibration and provide an excitation signal; the proximal end of the waveguide rod is connected to the output end of the transducer, and the distal end of the waveguide rod passes through the distal end of the inner sleeve rod and is connected to the tool tip portion. The waveguide rod is used to transmit high-frequency vibration to the tool tip portion.

[0019] Due to the adoption of the above technical solutions, the present utility model has the following advantages and positive effects compared with the prior art:

[0020] (1) In a pressure regulating mechanism for an ultrasonic scalpel jaw and an ultrasonic scalpel device provided by the present utility model, the ultrasonic scalpel is provided with an outer sleeve rod and an inner sleeve rod. The inner sleeve rod can axially move relative to the outer sleeve rod. The tip is fixed to the distal end of the sleeve rod unit and maintains a fixed posture. One side of the proximal end of the jaw is rotatably connected to the outer sleeve rod, and the other side of the proximal end is slidably connected to the inner sleeve rod. During the axial movement of the inner sleeve rod, the jaw is driven to rotate around the axis of the rotation axis, and the clamping distance between the jaw and the tip is adjusted, that is, the value of the clamping force between the two is adjusted. Through the mechanical structure design of the sleeve rod unit, the tip and the jaw, the controllability of the pressure applied by the jaw is realized.

[0021] (2) In a pressure regulating mechanism for an ultrasonic scalpel jaw and an ultrasonic scalpel device provided by the present utility model, based on the above mechanical structure design of the sleeve rod unit, the tip and the jaw, the main body of the pressure regulating mechanism includes an elastic component, a lead screw component and a controller. The elastic component is structurally linked with the inner sleeve rod, and the lead screw component is further structurally linked with the elastic component. When the ultrasonic scalpel device is started, the elastic component will apply an initial pulling force to the inner sleeve rod, causing the inner sleeve rod to displace, that is, causing the jaw to apply an initial pressure to the tip. The controller will output a control signal for adjusting the pressure value applied by the jaw to the lead screw component in real time. The compression amount of the elastic part in the elastic component can be adjusted through the lead screw component, thereby changing the force applied by the elastic component to the inner sleeve rod, and thus realizing the adjustment of the pressure applied by the jaw. Through the present utility model, the control signal output by the controller can be quickly applied based on the mechanical connection structure, achieving the function of automatic adjustment of the jaw pressure. Description of the Drawings

[0022] Figure 1 Schematic structural diagram of the pressure regulating mechanism provided by the present utility model;

[0023] Figure 2 Schematic overall structural diagram of an ultrasonic scalpel device for automatically adjusting the jaw pressure provided by the present utility model;

[0024] Figure 3 Schematic structural diagram of the tip and the jaw provided by the present utility model.

[0025] Description of the reference numerals: 1: tip; 2: jaw; 21: rotation axis; 22: buckle; 3: sleeve rod unit; 31: inner sleeve rod; 311: sliding groove; 32: outer sleeve rod; 4: elastic component; 41: inner sleeve rod pull ring; 42: elastic part; 43: inner sleeve rod guide groove; 5: lead screw component; 51: adjusting part; 52: screw rod; 53: guide tube; 54: motor; 55: limiting part; 56: limiting groove; 6: static handle; 7: moving handle; 71: moving handle connecting rod; 8: transducer; 9: waveguide rod. Detailed Embodiments

[0026] The following is a further detailed description of a pressure regulating mechanism for ultrasonic scalpel jaws and an ultrasonic scalpel device proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description and claims.

[0027] First embodiment

[0028] See also Figures 1 - 3 This embodiment provides a pressure adjustment mechanism for the ultrasonic scalpel jaws, which is used to realize the automatic adjustment function of the pressure value applied by the ultrasonic scalpel jaws 2.

[0029] The pressure regulating mechanism includes an elastic component 4, a screw component 5 and a controller, wherein the main body of the elastic component 4 includes an inner sleeve rod pull ring 41, an elastic portion 42 and an inner sleeve rod guide groove 43, the inner sleeve rod pull ring 41, the elastic portion 42 and the inner sleeve rod guide groove 43 are all hollow tube structures, the inner sleeve rod pull ring 41 and the elastic portion 42 are axially sleeved on the outside of the inner sleeve rod guide groove 43 in sequence, and can slide along the extension direction of the inner sleeve rod guide groove 43 respectively, and the inner sleeve rod pull ring 41, the elastic portion 42 and the inner sleeve rod guide groove 43 are all arranged in the same axial direction as the inner sleeve rod 31 of the ultrasonic knife device. Preferably, the elastic portion 42 in this embodiment adopts a spring.

[0030] Furthermore, a fixing groove is provided on the proximal tube body of the inner sleeve rod 31, and the first end of the inner sleeve rod pull ring 41 can be embedded in the fixing groove, that is, the inner sleeve rod pull ring 41 is fixedly connected with the inner sleeve rod 31, and the second end of the inner sleeve rod pull ring 41 abuts against the first end surface of the elastic part 42. In this embodiment, when the ultrasonic knife device is started, the inner sleeve rod pull ring 41 will be subjected to a constant external force, so that the inner sleeve rod pull ring 41 squeezes the elastic part 42 and generates displacement, driving the inner sleeve rod 31 to generate a corresponding movement toward the displacement direction of the inner sleeve rod pull ring 41.

[0031] The screw assembly 5 includes a screw structure and an adjusting member 51, wherein the vertical cross-section of the adjusting member 51 is an L-shaped structure, and the first end of the adjusting member 51 abuts against the second end face of the elastic portion, that is, the first end of the adjusting member 51 and the second end of the inner sleeve rod pull ring 41 can cooperate to extrude the elastic portion 42, and the second end of the adjusting member 51 is transmission-connected with the screw 52 of the screw structure, that is, by adjusting the rotation amount of the screw 52 in the screw structure, the extrusion force applied by the adjusting member 51 to the second end face of the elastic portion 42 can be controlled.

[0032] Specifically, the lead screw structure includes a lead screw 52, a guide tube 53 and a motor 54. The guide tube 53 is arranged in the same direction as the inner sleeve rod guide groove 43. The guide tube 53 is a hollow tube structure, and a hollow channel is axially opened inside. Axially arranged slide rails are provided on the inner wall of the hollow channel. Both the lead screw 52 and the second end of the adjusting member 51 are arranged to pass through the inner cavity of the guide tube 53. The outer periphery of the second end of the adjusting member 51 is slidably connected to the inner wall slide rail of the guide tube 53, that is, it is defined that the second end of the adjusting member 51 can only move along the extending direction of the axial slide rail of the guide tube 53. At the same time, a threaded hole is axially opened at the second end of the adjusting member 51, and the internal thread in the threaded hole matches the external thread of the lead screw 52, so that the lead screw 52 and the second end of the adjusting member 51 are threadedly connected. In this embodiment, the lead screw 52 is defined to be able to maintain a static axial position and achieve radial rotation, that is, the axial movement direction and distance of the adjusting member 51 can be adjusted by the radial rotation of the lead screw 52. In addition, the motor 54 is arranged on the side of the lead screw 52 away from the adjusting member 51, and the motor 54 rotating shaft is coaxially arranged and fixedly connected to the lead screw 52. It can be seen from this that in this embodiment, when the motor 54 is started, the lead screw 52 can be driven to rotate forward or backward. Since the radial rotation of the second end of the adjusting member 51 is limited, the radial rotation amount of the lead screw 52 will be converted into the axial movement amount of the adjusting member 51, and further the extrusion force of the adjusting member 51 on the elastic part 42 will change.

[0033] The controller is the control instruction output mechanism of the ultrasonic knife device. Its input end can be electrically connected to external data processing devices such as computers. The ultrasonic knife system constructed by data processing devices such as computers can automatically calculate and match the optimal clamping pressure of the jaw part 2 suitable for the currently clamped tissue based on information such as the initial pressure value applied by the current jaw and the impedance parameters of the currently clamped tissue, and transmit the pressure adjustment data to the controller. In this embodiment, the output end of the controller is further electrically connected to the motor 54. The controller can output control instructions to control the forward and reverse rotation amounts of the motor 54 rotating shaft, and further change the extrusion force of the adjusting member 51 on the elastic part 42.

[0034] Preferably, a limiting portion 55 is provided at the proximal end of the inner sleeve rod guiding groove 43. A accommodating space is formed by the cooperation between the limiting portion 55 and the opposite surface of the second end portion of the inner sleeve rod pull ring 41. The accommodating space is used to define the displacement distance between the elastic portion 42 and the first end portion of the adjusting member 51, preventing the elastic portion 42 and the first end portion of the adjusting member 51 from falling off the inner sleeve rod guiding groove 43 due to excessive adjustment during use. Meanwhile, a limiting groove 56 arranged in the same direction as the inner sleeve rod guiding groove 43 is further provided in the ultrasonic knife device. The limiting groove 56 and the lead screw assembly 5 are located on the opposite side of the axis of the inner sleeve rod guiding groove 43. The first end portion of the adjusting member 51 is in an annular structure, enabling it to fully fit the second end surface of the elastic portion 42. Meanwhile, the limiting groove 56 penetrates through the first end portion of the adjusting member 51, defining the movement of the first end portion of the adjusting member 51 along the extending direction of the limiting groove 56, further ensuring that the acting force exerted by the adjusting member 51 on the elastic portion 42 is more balanced and stable, making the sliding process of the inner sleeve rod pull ring 41 smoother and more stable.

[0035] In summary, this embodiment provides a pressure regulating mechanism. The inner sleeve rod 31 can be driven to move axially through the elastic component 4, and a lead screw assembly 5 is provided. The axial movement direction and distance of the inner sleeve rod 31 can be further finely adjusted by using the lead screw assembly 5, thereby realizing the controllable operation of the inner sleeve rod 31. The control logic for controlling the pressure applied to the jaw portion 2 of the ultrasonic knife device based on the adjustment of the inner sleeve rod 31 will be specifically described later.

[0036] Second Embodiment

[0037] Refer to Figures 1 - 3 , based on the same concept, this embodiment provides an ultrasonic knife device. In addition to adopting the above-mentioned pressure regulating mechanism, it further includes a sleeve rod unit 3, a tip portion 1, and a jaw portion 2. Among them, the sleeve rod unit 3 includes an inner sleeve rod 31 and an outer sleeve rod 32. Both the inner sleeve rod 31 and the outer sleeve rod 32 are hollow tubes. The inner sleeve rod 31 is disposed in the hollow cavity inside the outer sleeve rod 32 and can axially move relative to the outer sleeve rod 32 along the axis of the outer sleeve rod 32. In this embodiment, the direction of the inner sleeve rod 31 moving towards its distal end side is set as the first direction, and the direction of moving towards its proximal end side is set as the second direction.

[0038] The tip part 1 and the jaw part 2 are respectively arranged at the distal end of the sleeve rod unit 3. Among them, the tip part 1 is fixed at the distal end of the inner sleeve rod 31, and the axis direction of the tip part 1 is consistent with the axis direction of the inner sleeve rod 31, that is, the tip part 1 can only move back and forth relative to the axis direction of the sleeve rod unit 3 along with the inner sleeve rod 31. The jaw part 2 is movably connected to the inner sleeve rod 31 and the outer sleeve rod 32 respectively. Specifically, the proximal end of the jaw part 2 is a semi-circular arc surface structure. In the middle of this semi-circular arc surface structure, a fixing hole is opened. At the relative position of the outer sleeve rod 32, a matching fixing hole is also provided. The proximal end part of the jaw part 2 is sleeved outside the outer sleeve rod 32, so that the fixing hole channels of the two are opposite, and a rotating shaft 21 is successively passed through the fixing holes of the two, so that the jaw part 2 is rotatably connected to the outer sleeve rod 32, and further realizes that the jaw part 2 can rotate around the rotating shaft 21 as the rotation axis and generate an angular rotation in the vertical direction. At the same time, a buckle 22 is respectively arranged on both sides of the semi-circular arc surface structure of the jaw part 2. A slot with an open surface is opened at the far end port of the outer sleeve rod 32, so that the distal end of the inner sleeve rod 31 can partially extend out of the far end port of the outer sleeve rod 32. An annular sliding groove 311 is arranged on the outer peripheral surface of the distal end of the inner sleeve rod 31. The buckle 22 of the jaw part 2 can be engaged in the sliding groove 311 and can slide along the extending direction of the sliding groove 311. It can be seen from this that when the inner sleeve rod 31 moves in the first direction, the inner sleeve rod 31 will drive the jaw part 2 away from the tip part 1, that is, the two form an open state. On the contrary, when the inner sleeve rod 31 moves in the second direction, the inner sleeve rod 31 will drive the jaw part 2 close to the tip part 1, that is, the two form a closed state. Further, taking the inner sleeve rod 31 moving in the second direction as an example, the longer the moving distance of the inner sleeve rod 31 is, the greater the upward angular change of the jaw part 2 is, that is, the greater the pressure exerted by the jaw part 2 on the tip part 1 is.

[0039] It can be seen from this that when the ultrasonic scalpel device is started, a constant external force will act on the inner sleeve rod pull ring 41, causing the inner sleeve rod pull ring 41 to squeeze the elastic part 42. At the same time, a reaction force will be generated on the inner sleeve rod pull ring 41 by the first end face of the elastic part 42. The reaction force exerted by the elastic part 42 will limit the displacement distance of the inner sleeve rod 31 in the second direction. When the adjusting part 51 adjusts the squeezing force on the elastic part 42, the value of the reaction force generated by the first end face of the elastic part 42 on the inner sleeve rod pull ring 41 will change accordingly. That is, in the initial stage of starting the ultrasonic scalpel device, the inner sleeve rod 31 is subjected to the combined relative resultant force of the inner sleeve rod pull ring 41 and the elastic part 42, and will displace a fixed distance in the second direction. At this time, the jaw part 2 applies an initial pressure value to the tip part 1. If the adjusting part 51 moves in the second direction, the elastic part 42 will further stretch, and the reaction force generated by the first end face of the elastic part 42 on the inner sleeve rod pull ring 41 will weaken. The inner sleeve rod pull ring 41 will further drive the inner sleeve rod 31 to displace in the second direction, that is, the pressure applied by the jaw part 2 increases. On the contrary, if the adjusting part 51 moves in the first direction, the elastic part 42 will be further compressed, and the reaction force generated by the first end face of the elastic part 42 on the inner sleeve rod pull ring 41 will increase. The inner sleeve rod pull ring 41 will further drive the inner sleeve rod 31 to displace in the first direction, that is, the pressure applied by the jaw part 2 weakens.

[0040] In summary, this embodiment provides an ultrasonic scalpel device including a pressure regulating mechanism. Among them, the jaw part 2 can adjust the pressure applied to the tip part 1 based on the relative movement of the inner sleeve rod 31. The movement control logic of the inner sleeve rod 31 is realized based on the elastic component 4 and the screw rod component 5. The elastic component 4 will apply a fixed pulling force to the inner sleeve rod 31 in the initial state of the ultrasonic scalpel device, thereby causing the jaw part 2 to apply an initial pressure value. The screw rod component 5 is controlled by the controller's control instruction to adjust the rotation amount of the screw rod 52, and then uses the adjusting part 51 to adjust the compression amount of the elastic part 42, thereby changing the pulling force value of the elastic component 4 on the inner sleeve rod 31, and the pressure value applied by the jaw part 2 can be adjusted. Through this embodiment, the ultrasonic scalpel device has the function of automatically adjusting the jaw pressure, improving the controllability and stability of the clamping pressure during the use of the ultrasonic scalpel device, and effectively ensuring the safety and efficiency of the surgical operation.

[0041] Preferably, the ultrasonic scalpel device is provided with a static handle 6 and a moving handle 7. Among them, the static handle 6 is fixedly connected to the ultrasonic scalpel housing, which is convenient for the user to hold and exert force. The moving handle 7 is arranged at the front end of the static handle 6. A moving handle connecting rod 71 is provided at the top of the moving handle 7. The moving handle 7 can generate displacement relative to the static handle 6 under the action of an external force, and drive the moving handle connecting rod 71 to generate displacement. That is, when the user holds the static handle 6 in the palm, the finger can press the moving handle 7 toward the side of the static handle 6 to drive the moving handle connecting rod 71 to generate displacement. A card slot is provided on the side of the inner sleeve rod pull ring 41, and a convex block is provided at the corresponding position on the top of the moving handle connecting rod 71. The convex block is engaged in the card slot. That is, when the moving handle 7 is pressed by an external force, the moving handle connecting rod 71 can synchronously drive the inner sleeve rod pull ring 41 to generate a corresponding displacement. It should be noted that during the clamping process using the ultrasonic scalpel device, when the user presses the moving handle 7, the moving handle 7 needs to be kept in a continuous maximum pressing posture, so that a constant external force acts on the inner sleeve rod pull ring 41, ensuring that the clamping pressure between the tip 1 and the jaw 2 remains stable during the clamping process. At the same time, the user does not need to adjust the holding force.

[0042] Preferably, a transducer 8 is also provided in the ultrasonic scalpel device. The transducer 8 is used to convert electrical energy into mechanical energy of high-frequency vibration and can output an excitation signal, and the excitation signal can be used to start the operation of the ultrasonic scalpel system. At the same time, a waveguide rod 9 is also provided. The waveguide rod 9 sequentially passes through the inner sleeve rod guide groove 43 and the first end of the inner sleeve rod pull ring 41 along the axis, and is finally arranged in the hollow cavity of the inner sleeve rod 31. The distal end of the waveguide rod 9 passes through the far port of the inner sleeve rod 31. The proximal end of the waveguide rod 9 is connected to the output end of the transducer 8, and the distal end of the waveguide rod 9 is connected to the tip 1. The waveguide rod 9 can be used to further transmit the high-frequency vibration to the tip 1.

[0043] It should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0044] It should be noted that, unless otherwise clearly specified or limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0045] In addition, in the description of the present application, "proximal end" and "distal end" are common terms in the medical field. Specifically, the "proximal end" is the end close to the operator, the "proximal face" is the face close to the operator, the "distal end" is the end far from the operator, and the "distal face" is the face far from the operator.

[0046] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings, but the present utility model is not limited to the above embodiments. Even if various changes are made to the present utility model, provided that these changes fall within the scope of the claims of the present utility model and its equivalent technologies, they still fall within the protection scope of the present utility model.

Claims

1. A pressure regulating mechanism for ultrasonic scalpel jaws, characterized in that: It includes an elastic component, a screw component and a controller; The elastic component comprises an inner sleeve rod pull ring, an elastic part and an inner sleeve rod guide groove, the inner sleeve rod pull ring, the elastic part and the inner sleeve rod guide groove are all hollow tube structures, the inner sleeve rod pull ring and the elastic part are sequentially sleeved on the outside of the inner sleeve rod guide groove, and are respectively slidably connected with the inner sleeve rod guide groove, the first end of the inner sleeve rod pull ring is fixedly connected to the proximal end of the inner sleeve rod, the second end of the inner sleeve rod pull ring is in contact with the first end face of the elastic part, and the elastic component is configured so that when the ultrasonic knife device is started, the inner sleeve rod pull ring is subjected to a constant external force to squeeze the elastic part and generate displacement, thereby driving the inner sleeve rod to generate a corresponding displacement along the displacement direction of the inner sleeve rod pull ring; The screw assembly includes a screw structure and an adjusting member, the first end of the adjusting member abuts against the second end face of the elastic portion, and the second end of the adjusting member is connected to the screw transmission of the screw structure; the controller is used to receive a control signal and adjust the screw rotation amount of the screw structure based on the control signal; the screw assembly is configured such that when the ultrasonic knife device is started, the controller adjusts the screw rotation amount of the screw structure, controls the adjusting member to move toward or away from the second end face of the elastic portion, changes the compression amount of the elastic portion, and thereby adjusts the axial displacement direction and displacement amount of the inner sleeve.

2. The pressure regulating mechanism for ultrasonic knife jaws according to claim 1, characterized in that: A limiting portion is provided at the proximal end of the inner sleeve rod guide groove, and the limiting portion cooperates with the opposite surface of the second end of the inner sleeve rod pull ring to form an accommodating space, and the accommodating space is used to limit the displacement distance between the elastic portion and the first end of the adjusting member.

3. The pressure regulating mechanism for ultrasonic knife jaws according to claim 1, characterized in that: The elastic part is selected to be a spring.

4. The pressure regulating mechanism for ultrasonic knife jaws according to claim 1, characterized in that: An internal thread matching the screw rod is arranged axially at the center of the second end of the adjusting member, and the second end of the adjusting member is threadedly connected to the screw rod. The screw rod is limited to be able to maintain a stationary axial position and realize radial rotation.

5. The pressure regulating mechanism for ultrasonic knife jaws according to claim 1, characterized in that: The screw structure also includes a guide tube, which is arranged in the same direction as the inner sleeve guide groove, and a hollow cavity is axially opened inside the guide tube, and a slide rail is provided on the inner wall of the hollow cavity. The second end of the adjusting member and the screw are axially arranged in the hollow cavity, and the second end of the adjusting member is slidably connected to the hollow cavity in the guide tube along the extension direction of the slide rail.

6. The pressure regulating mechanism for ultrasonic knife jaws according to claim 1, characterized in that: The screw assembly is also provided with a motor, which is arranged on the side of the screw away from the adjusting member. The motor shaft is coaxially arranged and fixedly connected to the screw, and the motor is electrically connected to the controller, and the controller is used to directly control the forward and reverse rotation amount of the motor shaft.

7. An ultrasonic scalpel device using the pressure regulating mechanism for ultrasonic scalpel jaws as claimed in any one of claims 1 to 6, characterized in that: It includes a sleeve rod unit, a knife tip portion, and a jaw portion; The sleeve rod unit comprises an inner sleeve rod and an outer sleeve rod, both of which are hollow tube structures, the inner sleeve rod is arranged in the hollow cavity inside the outer sleeve rod, and is limited to be movable along the axis direction of the outer sleeve rod, and the direction in which the inner sleeve rod moves toward its distal end is set as a first direction, and the direction in which the inner sleeve rod moves toward its proximal end is set as a second direction; The knife tip portion is fixedly arranged at the distal end of the inner sleeve rod, and the jaw portion is movably connected to the inner sleeve rod and the outer sleeve rod respectively. The knife tip portion and the jaw portion are configured such that when the inner sleeve rod moves in a first direction, the inner sleeve rod drives the jaw portion away from the knife tip portion, and when the inner sleeve rod moves in a second direction, the inner sleeve rod drives the jaw portion close to the knife tip portion.

8. The ultrasonic knife device according to claim 7, characterized in that: The proximal end of the jaw part and the distal end of the outer rod are respectively provided with matching fixing holes, and a rotating shaft is provided to pass through the fixing holes of the jaw part and the outer rod in sequence, so as to realize the rotational connection between the jaw part and the outer rod; the proximal end of the jaw part is also provided with a buckle, and the inner rod is provided with a sliding groove on the circumferential surface extending out of the outer rod port, and the buckle is engaged in the sliding groove and can be slidably connected with the sliding groove along the extension direction of the sliding groove.

9. The ultrasonic knife device according to claim 7, characterized in that: A static handle and a dynamic handle are also provided, and the static handle is connected to the ultrasonic knife housing in a fixed posture. The dynamic handle can be displaced relative to the static handle under the action of external force, and a slot is provided on the side of the inner sleeve rod pull ring, and a protrusion is provided on the top of the dynamic handle, and the protrusion is engaged in the slot. The dynamic handle and the elastic component are configured so that when the dynamic handle is driven to displace by external force, the dynamic handle can drive the inner sleeve rod pull ring to produce a fixed displacement.

10. The ultrasonic knife device according to claim 7, characterized in that: A transducer and a waveguide rod are also provided, wherein the transducer is used to convert electrical energy into high-frequency vibration mechanical energy and provide an excitation signal; The proximal end of the waveguide rod is connected to the output end of the transducer, the distal end of the waveguide rod passes through the distal end of the inner sleeve rod and is connected to the blade tip, and the waveguide rod is used to transmit high-frequency vibration to the blade tip.

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