Ultrasonic instrument handle, ultrasonic cutting instrument and ultrasonic operation cutting system

Abstract

The utility model relates to an ultrasonic instrument handle, an ultrasonic cutting instrument and an ultrasonic operation cutting system. The ultrasonic instrument handle comprises a rotary knob, an outer pipe connecting piece and a damping piece. An ultrasonic cutting instrument includes a transducer, an operating handle, a shaft assembly, and a torque wrench. According to the ultrasonic cutting instrument, when the knob is operated, under the action of the first torque and the second torque, the knob applies the rated torque sufficient for connecting the waveguide to the transducer to the outer tube connecting piece, and meanwhile, due to the existence of the damping piece, when an operator uses the instrument to conduct surgical operation after the handle and the transducer are well connected, the operation efficiency is greatly improved. When the rotary knob is rotated to adjust the shaft assembly, due to the fact that torsion not larger than the first torque exists between the rotary knob and the outer pipe connecting piece, the problem of idle stroke is avoided when the rotary knob is operated to drive the shaft assembly to rotate, and rotation of the rotary knob and the shaft assembly has synchronism.

Description

Technical Field

[0001] The present application relates to the technical field of surgical instruments, and particularly to a torque wrench, an ultrasonic instrument handle, an ultrasonic cutting instrument, and an ultrasonic surgical cutting system. Background Art

[0002] An ultrasonic surgical instrument generally includes an end effector, a shaft assembly, a handle, a transducer, and a host machine that are connected in sequence. Its working principle is mainly that the host machine supplies electrical energy to the transducer, and the transducer converts the electrical energy into mechanical energy of vibration. The mechanical energy is transmitted to the end effector through a waveguide in the shaft assembly, so that the end effector transmits energy to local tissues of the human body to achieve the purpose of surgical treatment.

[0003] In the prior art, the handle and the torque wrench are separate. After the torque wrench is connected to the wrench mating structure of the handle part, the transducer is connected to the handle with the torque wrench, and then the torque wrench is removed from the handle; some prior arts integrate the torque wrench into the handle. By setting an elastic deflection arm in the knob and cooperating with concave and convex teeth, when the transmitted torque is greater than the limit torque value, the elastic deflection arm deflects and slides past the corresponding teeth. However, in this torque limiting structure, when the tooth pitch between the concave and convex teeth is greater than the mating structure between the elastic deflection arm and the concave and convex teeth, there will be a dead zone when the elastic deflection arm moves within the tooth pitch. The existence of this dead zone will lead to a serious problem that the operation action of turning the knob is out of sync with the execution movement of the end effector during the surgical use after the transducer is connected to the handle, seriously affecting the operation and even causing a greater risk of use. Summary of the Utility Model

[0004] Based on this, it is necessary to provide an ultrasonic instrument handle, an ultrasonic cutting instrument, and an ultrasonic surgical cutting system for solving the problem in the prior art that there is a dead zone when operating the knob, resulting in the operation action of turning the knob being out of sync with the execution movement of the end effector.

[0005] An ultrasonic instrument handle, the ultrasonic instrument handle includes:

[0006] An operating handle;

[0007] A shaft assembly, the shaft assembly is rotatably connected to the operating handle and defines a longitudinal axis, wherein the shaft assembly includes an outer tube and a waveguide connected inside the outer tube;

[0008] A pin for connecting the waveguide and the outer tube so that the waveguide and the outer tube can rotate synchronously;

[0009] A knife disposed at the distal end of the waveguide;

[0010] A knob is rotatably connected to the operating handle about the longitudinal axis. A mating hole is formed in the knob along the center line of the knob, and a first torque limiting structure is provided in the mating hole.

[0011] An outer tube connector is coaxially arranged with the outer tube and fixedly connected to the proximal end of the outer tube. At least a part of the outer tube connector is sleeved in the mating hole. The outer tube connector includes a second torque limiting structure, and the first torque limiting structure cooperates with the second torque limiting structure to transmit a torque not greater than the second torque from the knob to the outer tube connector.

[0012] A damping member is used to provide a preset damping between the knob and the outer tube connector, so that the knob can transmit a torque not greater than the first torque to the outer tube connector.

[0013] Wherein, when the knob is operated, under the action of the first torque and the second torque, the knob applies a rated torque sufficient to connect the waveguide to the transducer to the outer tube connector.

[0014] In one embodiment, the preset damping satisfies that the knob can drive the outer tube connector to rotate synchronously during the use of the ultrasonic instrument handle.

[0015] In one embodiment, the damping member includes an elastic ring. The elastic ring is sleeved on the outer periphery of the outer tube connector and is located between the knob and the outer tube connector, and the elastic ring abuts against the inner wall of the knob.

[0016] In one embodiment, two limiting convex rings are provided on the outer wall of the outer tube connector, and the elastic ring is located between the two limiting convex rings.

[0017] In one embodiment, the damping member further includes a damping adjusting member. The damping adjusting member is threadedly connected to the knob. The damping adjusting member extends radially from the outer wall of the knob through the inner wall of the knob and abuts against the elastic ring.

[0018] In one embodiment, the damping member includes a damping ring and a damping adjusting member. The damping ring is sleeved on the outer periphery of the outer tube connector and does not abut against the inside of the knob. The damping adjusting member is threadedly connected to the knob. The damping adjusting member extends radially from the outer wall of the knob through the inner wall of the knob and abuts against the damping ring.

[0019] In one embodiment, there are multiple damping adjusting members, and the multiple damping adjusting members are arranged at intervals around the center line.

[0020] In one embodiment, the damping member includes a set screw and a pressing head.

[0021] A through hole is formed in the side wall of the knob, the pressing head is disposed in the through hole, and the setscrew is threadedly connected to the through hole; wherein, one end of the pressing head abuts against the outer tube connector, and the other end is connected to the setscrew, and the pressure applied by the pressing head to the outer tube connector is controlled by adjusting the setscrew, thereby adjusting the damping magnitude.

[0022] In one embodiment, a plurality of the damping members are included, and the plurality of damping members are disposed at intervals around the center line.

[0023] An embodiment of the present application provides an ultrasonic cutting instrument, which includes: a transducer and the ultrasonic instrument handle as described above, and the transducer is connected to the ultrasonic instrument handle for generating ultrasonic vibration and transmitting the ultrasonic vibration to the knife through the waveguide.

[0024] An embodiment of the present application provides an ultrasonic surgical cutting system, which includes: a host and the ultrasonic cutting instrument as described above; the host is electrically connected to the transducer for supplying electric energy to the transducer.

[0025] In the above ultrasonic instrument handle, ultrasonic cutting instrument and ultrasonic surgical cutting system, the knob is rotatably connected to the operation handle around a longitudinal axis, a fitting hole is formed along the center line of the knob, and a first torque limiting structure is disposed in the fitting hole; an outer tube connector, the outer tube connector is coaxial with the outer tube and fixedly connected to the proximal end of the outer tube, at least a part of the outer tube connector is sleeved in the fitting hole, the outer tube connector includes a second torque limiting structure, and the first torque limiting structure and the second torque limiting structure cooperate to achieve transmitting a torque not greater than the second torque from the knob to the outer tube connector; a damping member, the damping member is used for making a preset damping exist between the knob and the outer tube connector, so that the knob can transmit a torque not greater than the first torque to the outer tube connector; wherein, when the knob is operated, under the action of the first torque and the second torque, the knob applies a rated torque sufficient to connect the waveguide to the transducer to the outer tube connector. At the same time, due to the existence of the damping member, after the handle and the transducer are connected, when an operator uses the instrument for surgical operation and rotates the knob to adjust the shaft assembly, because there is a torque not greater than the first torque between the knob and the outer tube connector, the problem of empty stroke is avoided when the knob is operated to drive the shaft assembly to rotate, and the rotation of the rotary knob and the shaft assembly has synchronism. Description of the Drawings

[0026] Figure 1 It is a schematic diagram of an ultrasonic cutting instrument according to an embodiment.

[0027] Figure 2 For Figure 1 It is a structural diagram of the central shaft assembly passing through the outer tube connector.

[0028] Figure 3 For Figure 2Exploded view of the pin, knob, outer tube connector and shaft assembly.

[0029] Figure 4 Exploded view of the knob, outer tube connector and damper for an embodiment.

[0030] Figure 5 For Figure 4 Axial sectional view of the knob, outer tube connector and damper in

[0031] Figure 6 Axial sectional view of the knob, outer tube connector and damper for another embodiment.

[0032] Figure 7 For Figure 4 Schematic diagram of the knob in

[0033] Figure 8 For Figure 4 Schematic diagram of the outer tube connector and elastic protrusion in

[0034] Figure 9 Axial sectional view of the knob, outer tube connector and damper for yet another embodiment.

[0035] Figure 10 For Figure 9 Enlarged view of the setscrew and the press head at

[0036] Figure 11 For Figure 10 Exploded view of

[0037] Figure 12 Radial sectional view of the deformed part of the knob, outer tube connector and damper for an embodiment.

[0038] Figure 13 Radial sectional view of the deformed part of the knob, outer tube connector and damper for another embodiment.

[0039] Figure 14 For Figure 13 Schematic diagram of another mating position between the deformed part and the resistance groove in

[0040] Explanation of the reference numerals in the drawings:

[0041] 10 - Ultrasonic instrument handle; 11 - Operating handle; 12 - Shaft assembly; 13 - Pin; 14 - Knife; 15 - Second fixing hole;

[0042] 110 - Knob; 111 - Fitting hole; 112 - Through hole; 113 - Protrusion; 114 - Resistance groove; 115 - First side wall; 116 - Second side wall; 117 - First inclined surface; 118 - Arc groove;

[0043] 120 - Outer tube connector; 121 - Limiting convex ring; 122 - Mounting hole; 123 - First fixing hole; 124 - Deformable part; 125 - Deformation part; 126 - Protrusion part; 127 - Second inclined surface;

[0044] 130 - Damping part;

[0045] 140 - Elastic ring; 141 - Elastic protrusion;

[0046] 150 - Clamping part; 151 - Elastic part; 152 - Pressing head; 153 - Set screw; 154 - Limiting part;

[0047] 200 - Ultrasonic cutting instrument; 201 - Transducer. Detailed implementation manner

[0048] To make the above - mentioned objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manner of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0049] In the description of the present application, it should be understood that if terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings. These are only for the convenience of describing the present application 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. Therefore, it should not be construed as a limitation to the present application.

[0050] In addition, if terms such as "first" and "second" appear, these terms are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0051] In this application, unless otherwise clearly specified or limited, if terms such as "installed", "connected", "linked", "fixed", etc. appear, these terms shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0052] In this application, unless otherwise clearly specified or limited, if there is a description such as a first feature being "on" or "under" a second feature, its meaning may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0053] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. If an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0054] Figures 1-3 FIG. shows a handle 10 of an ultrasonic instrument provided by an embodiment of the present application, including: an operating handle 11, a shaft assembly 12, a pin 13, a blade 14, a knob 110, an outer tube connector 120 and a damping member 130.

[0055] Wherein, the shaft assembly 12 is rotatably connected to the operating handle 11 and defines a longitudinal axis. The shaft assembly 12 includes an outer tube and a waveguide connected inside the outer tube; the pin 13 is used to connect the waveguide and the outer tube so that the waveguide and the outer tube can rotate synchronously; the blade 14 is disposed at the distal end of the waveguide.

[0056] Refer to Figure 4 、 Figure 6 and Figure 9 , Figure 4 FIG. shows a schematic structural diagram of the knob 110, the outer tube connector 120 and the damping member 130 in an embodiment of the present application. Figure 6The structural schematic diagrams of the knob 110, the outer tube connector 120, and the damping member 130 in another embodiment of the present application are shown. Figure 9 The structural schematic diagrams of the knob 110, the outer tube connector 120, and the damping member 130 in yet another embodiment of the present application are shown. In the above ultrasonic instrument handle 10, the knob 110 is rotatably connected to the operating handle 11 about the longitudinal axis. A mating hole 111 is provided along the center line of the knob 110, and a first torque limiting structure is arranged in the mating hole 111. The outer tube connector 120 is coaxial with the outer tube and fixedly connected to the proximal end of the outer tube. The outer tube connector 120 is at least partially sleeved in the mating hole 111. The outer tube connector 120 includes a second torque limiting structure. The first torque limiting structure and the second torque limiting structure cooperate to transmit a torque not greater than the second torque from the knob to the outer tube connector. The damping member 130 is used to provide a preset damping between the knob 110 and the outer tube connector 120, so that the knob 110 can apply a torque not greater than the first torque to the outer tube connector 120. When the knob 110 is rotated about the center line, under the action of the first torque and the second torque, the knob 110 applies a rated torque sufficient to connect the waveguide to the transducer to the outer tube connector 120. At the same time, due to the presence of the damping member 130, after the handle 11 is connected to the transducer, when the operator uses the instrument for surgical operations and rotates the knob 110 to adjust the shaft assembly 12, because there is a torque not greater than the first torque between the knob 110 and the outer tube connector 120, the problem of empty stroke is avoided when the knob 110 is rotated to drive the shaft assembly 12 to rotate, and the rotation of the rotary knob 110 and the shaft assembly 12 has synchronism.

[0057] Specifically, at least two teeth are provided on the circumferential side wall of the first torque-limiting structure arranged in the mating hole 111 to form the first torque-limiting structure, and the at least two teeth are evenly distributed around the center line; an outer tube connector 120, the outer tube connector 120 is coaxial with the outer tube and fixedly connected to the proximal end of the outer tube, the outer tube connector 120 is at least partially sleeved in the mating hole 111, and the outer tube connector 120 includes at least two cantilevers to form the second torque-limiting structure, and the at least two cantilevers are evenly distributed around the longitudinal axis; wherein, when the knob 110 rotates around the center line, the cantilevers cooperate with the teeth, so that the cantilevers bend in a direction away from the longitudinal axis, so that the knob 110 applies a second torque to the outer tube connector, and under the action of the first torque and the second torque, the knob 110 applies a rated torque sufficient to connect the waveguide to the transducer to the outer tube connector 120, so that an operator can hold the operating handle 11 with one hand for operation and turn the knob 110 to adjust the shaft assembly 12 with the other hand, and then the outer tube connector 120 can be driven to rotate by the torque less than or equal to the first torque between the knob 110 and the outer tube connector 120, and further drive the shaft assembly 12 to rotate. At this time, there is no cooperation relationship between the cantilevers and the teeth. At the same time, after overcoming the preset damping of the damping member, a second torque can be generated through the cooperation between the cantilevers and the teeth, and the shaft assembly 12 can be driven to rotate through the first torque and the second torque. The effect of adjusting the shaft assembly 12 at any time during the operation of the operating handle 11 is realized through a simple structure, and the problem of dead travel is avoided, and the response effect of the outer tube during the rotation of the knob 110 is improved.

[0058] Wherein, the teeth are Figure 14 a convex structure with a first inclined surface 117 therein, and the cantilever is Figure 14 the convex portion 126 therein.

[0059] Refer to Figure 3 Specifically, the outer tube connector 120 is provided with a first fixing hole 123 along its radial direction, the shaft assembly 12 is provided with a second fixing hole 15 along the radial direction of the outer tube connector 120, and a pin 13 is inserted through the first fixing hole 123 and the second fixing hole 15, so as to relatively fix the outer tube connector 120 and the shaft assembly 12, so that the shaft assembly 12 can be driven to rotate during the rotation of the outer tube connector 120.

[0060] Wherein, the preset damping satisfies that the operating knob can drive the outer tube connector to rotate synchronously during the use of the ultrasonic instrument handle, that is, during the operation of the handle during the operation, the damping member can enable the knob 110 to transmit a force sufficient to drive the outer tube connector 120 to rotate, so that there is basically no relative sliding between the knob and the outer tube connector.

[0061] Specifically, in the ultrasonic instrument handle 10, a fitting hole 111 is axially formed in the knob 110. The outer tube connector 120 partially extends into the fitting hole 111. The damping member 130 is connected to one of the knob 110 and the outer tube connector 120 and abuts against the other along the radial direction of the knob 110, so as to generate a frictional force between the knob 110 and the outer tube connector 120. Specifically, one end of the outer tube connector 120 is connected to the shaft assembly 12. The damping member 130 is connected to the knob 110 and abuts against the inner wall of the outer tube connector 120, or the damping member 130 is connected to the outer tube connector 120 and abuts against the outer wall of the knob 110. Thus, when the operator rotates the knob 110, the outer tube connector 120 can be driven to rotate through the frictional force between the knob 110 and the outer tube connector 120, and then the shaft assembly 12 is driven to rotate.

[0062] Refer to Figures 4-5 , in one embodiment, the damping member 130 is an elastic ring 140. The elastic ring 140 is sleeved on the outer periphery of the outer tube connector 120 and is located between the knob 110 and the outer tube connector 120. The elastic ring 140 abuts against the inner wall of the knob 110. Thus, by being clamped and extruded by the knob 110 and the outer tube connector 120, the elastic ring 140 can drive the outer tube connector 120 to rotate through the frictional force between the elastic ring 140 and the knob 110 and the frictional force between the elastic ring 140 and the outer tube connector 120.

[0063] Specifically, the elastic ring 140 is a rubber ring or a silicone ring, or can be made of other materials, as long as the elastic ring 140 can generate elasticity along the radial direction of the outer tube connector 120, and the elastic ring 140 can generate frictional force with the outer wall of the outer tube connector 120 and the inner wall of the knob 110.

[0064] In some specific embodiments, the frictional torque generated between the knob 110 and the outer tube connector 120 by the damping member 130 is 0 - 0.3 N / M.

[0065] Specifically, the cross-section of the elastic ring 140 is circular, oval or square. Among them, the square elastic ring 140 has a larger contact area with the knob 110 and the outer tube connector 120. With the contact area determined, the frictional force is more stable.

[0066] Specifically, the elastic ring 140, the outer tube connector 120 and the knob 110 are coaxially arranged, so that the force transmitted from the knob 110 to the outer tube connector 120 through friction can be more stable. At the same time, the outer tube connector 120 can stably rotate around the axis, preventing rotation deviation.

[0067] Refer to Figures 4-5In one embodiment, two limiting protrusions 121 are formed on the outer wall of the outer tube connector 120 , and the elastic ring 140 is located between the two limiting protrusions 121 .

[0068] See also Figures 6-8 In one embodiment, the damping member 130 is a plurality of elastic protrusions 141 , which are disposed on the outer wall of the outer tube connector 120 , and the side of the elastic protrusions 141 facing away from the outer tube connector 120 abuts against the inner wall of the knob 110 .

[0069] In another embodiment, the damping member 130 is a plurality of elastic protrusions 141 , which are disposed on the inner wall of the knob 110 , and a side of the elastic protrusion 141 facing away from the knob 110 abuts against an outer wall of the outer tube connector 120 .

[0070] In the above two embodiments, multiple elastic protrusions 141 are provided on the outer wall of the outer tube connector 120 or the inner wall of the knob 110 so that the outer tube connector 120 is indirectly in contact with the knob 110 , thereby indirectly generating friction between the knob 110 and the outer tube connector 120 .

[0071] Specifically, the elastic protrusion 141 is an arc-shaped strip, and a plurality of elastic protrusions 141 are evenly arranged around the circumference of the knob 110 , so that the force between the knob 110 and the outer tube connector 120 is evenly distributed around the circumference of the knob 110 .

[0072] In one embodiment, the damping member 130 also includes a damping adjustment member, which is threadedly connected to the knob. The damping adjustment member extends radially from the outer wall of the knob 110 through the inner wall of the knob 110 and abuts against the elastic ring 140. The damping size is adjusted by adjusting the extrusion pressure between the damping adjustment member and the elastic ring 140.

[0073] In one embodiment, the damping member 130 includes a damping ring and a damping adjustment member, wherein the damping ring is sleeved on the outer periphery of the outer tube connector 120 and does not abut against the inside of the knob 110, and the damping adjustment member is threadedly connected to the knob 110, and the damping adjustment member extends from the outer wall of the knob along the radial direction of the knob through the inner wall of the knob 110 and abuts against the damping ring. The damping size is adjusted by adjusting the extrusion force between the damping adjustment member and the damping ring.

[0074] Specifically, the damping adjustment member includes a plurality of damping adjustment members, and the plurality of damping adjustment members are arranged at intervals around the center line.

[0075] Specifically, the damping adjustment member may be a jackscrew or a screw, which will not be described in detail here.

[0076] In one embodiment, the damping member includes a top screw 153 and a pressure head; a through hole 112 is opened on the side wall of the knob 110, the pressure head is arranged in the through hole 112, and the top screw 153 is threadedly connected to the through hole 112; wherein, one end of the pressure head abuts against the outer tube connector 120, and the other end is connected to the top screw 153, and the pressure applied to the outer tube connector 120 by adjusting the top screw 153 is controlled, thereby adjusting the preset damping.

[0077] Specifically, the pressure head may include elastic materials such as rubber.

[0078] See also Figures 9-11 In one embodiment, the damping member 130 includes a clamping member 150, an elastic member 151 and a pressing head 152. A through hole 112 is provided on the outer wall of the knob 110, and the damping member 130 is inserted through the through hole 112. One end of the pressing head 152 abuts against the outer wall of the outer tube connector 120, and the other end abuts against the elastic member 151. One end of the elastic member 151 away from the pressing head 152 abuts against the clamping member 150, and the clamping member 150 is clamped against the inner wall of the through hole 112, so that one end of the elastic member 151 abuts against the clamping member 150, and the other end abuts against the pressing head 152, so that the pressing head 152 is pressed toward the outer tube connector 120, so that an elastic abutting force is generated between the pressing head 152 and the outer tube connector 120, so that friction is indirectly generated between the outer tube connector 120 and the knob 110.

[0079] Specifically, the number of damping members 130 composed of the clamping member 150, the elastic member 151 and the pressure head 152 is 2-8, and the multiple damping members 130 are evenly arranged around the circumference of the rotating shaft, so that the friction force between the outer tube connector 120 and the knob 110 can be the same in each radial direction.

[0080] See also Figures 9-11 In one embodiment, the clamping member 150 is a top screw 153, and the through hole 112 is provided with an internal thread. The top screw 153 cooperates with the inner wall thread of the through hole 112, so that the top screw 153 can be rotated to make it approach or move away from the outer tube connecting member 120, thereby changing the elastic force of the elastic member 151, and finally achieving the effect of changing the friction between the outer tube connecting member 120 and the knob 110.

[0081] Specifically, the clamping member 150 may also be a threaded rod, a headed screw or a screw, which will not be described in detail here.

[0082] See also Figures 9-11, in one embodiment, a limiting portion 154 protruding radially along the through hole 112 is provided at one end of the indenter 152 facing away from the outer tube connector 120. A protruding portion 113 protruding radially along the through hole 112 is provided on the inner wall of the through hole 112 near the end of the outer tube connector 120. The limiting portion 154 is located on the side of the protruding portion 113 facing away from the outer tube connector 120. In this embodiment, first, the outer tube connector 120 is passed through the mating hole 111 of the knob 110, the indenter 152 is placed in the through hole 112 such that the protruding portion 113 and the limiting portion 154 are in contact, then the elastic member 151 is placed, and then the clamping member 150 is clamped to the inner wall of the through hole 112. At this time, the indenter 152 is pushed up by the outer tube connector 120 and moves towards the clamping member 150. The elastic force and the abutting force of the elastic member 151 reach a balance. Due to the presence of the protruding portion 113, the limiting portion 154 cannot continue to move away from the clamping member 150, thereby preventing the indenter 152 from falling out of the through hole 112 during the assembly process, and making the entire assembly process simpler and more stable.

[0083] Specifically, the protruding portion 113 is a convex ring.

[0084] In other embodiments, the indenter 152 can also be a spherical ball or the damping member 130 is a ball screw. The form of the damping member 130 is not limited herein.

[0085] Refer to Figure 4 、 Figure 5 、 Figures 12-14 , in one embodiment, the ultrasonic instrument handle 10 further includes a plurality of deformation members 124. A plurality of mounting holes 122 are provided on the outer wall of the outer tube connector 120, and a plurality of resistance grooves 114 are provided on the inner wall of the knob 110. The plurality of resistance grooves 114, the plurality of deformation members 124, and the plurality of mounting holes 122 correspond to each other one by one. The deformation member 124 includes a deformation portion 125 and a protruding portion 126. One end of the deformation portion 125 is connected to the inner wall of the mounting hole 122, and the other end is connected to the protruding portion 126. The protruding portion 126 protrudes radially away from the deformation portion 125 along the outer tube connector 120 and is partially located in the resistance groove 114. The side wall of the resistance groove 114 along the clockwise rotation direction of the knob 110 is the first side wall 115, and the side wall of the resistance groove 114 along the counterclockwise rotation direction of the knob 110 is the second side wall 116. The first side wall 115 or the second side wall 116 forms an angle with the radial direction of the knob 110 and forms a first inclined surface 117. The distance between the first side wall 115 and the second side wall 116 gradually increases in the direction close to the outer tube connector 120. The protruding portion 126 has a second inclined surface 127 adapted to the first inclined surface 117.

[0086] In this embodiment, since the protrusion 126 is connected to the knob 110 through the deformation portion 125 and the inner wall of the mounting hole 122, during the clockwise or counterclockwise rotation, the second inclined surface 127 will squeeze the first inclined surface 117, so that the protrusion 126 has a tendency to move in the radial direction of the knob 110 away from the knob 110. Therefore, the part of the deformation portion 125 close to the protrusion 126 will be deformed in the radial direction of the knob 110 away from the knob 110, and the protrusion 126 will move in the radial direction of the knob 110 away from the knob 110, and break away from the current resistance groove 114 and enter the next adjacent resistance groove 114. The second inclined surface 127 squeezes the first inclined surface 117, and finally the protrusion 126 In the process of the lifting portion 126 separating from the current resistance groove 114 and entering the next adjacent resistance groove 114, a rotational torque will also be generated between the knob 110 and the rotating shaft, and the rotational torque will be between 0-0.7N / M, thereby realizing double torque through the cooperation between the damping member 130 and the first inclined surface 117 and the second inclined surface 127, thereby improving the stability of the rotation of the outer tube connecting member 120 driven by the knob 110. At the same time, when the torque applied to the knob 110 is too large, the friction force generated by the damping member 130 and the action force of the first inclined surface 117 and the second inclined surface 127 can be overcome, so that the knob 110 rotates and the outer tube connecting member 120 does not rotate, thereby achieving the purpose of controlling the preload force for the stable connection between the transducer and the waveguide.

[0087] Specifically, the side surface of the protrusion 126 along the circumference of the outer tube connector 120 away from the first inclined surface 117 is a plane along the radial direction of the outer tube connector 120, and the side wall of the ground resistance groove 114 opposite to the first inclined surface 117 along the circumference of the outer tube connector 120 is adapted to the above-mentioned plane, thereby ensuring that the blocking knob 110 can drive the outer tube connector 120 to rotate when rotating in the reverse direction, and cannot slip, thereby preventing relative rotation, so as to facilitate the disassembly of the transducer and the waveguide.

[0088] Specifically, the plurality of deformable members 124 are evenly arranged around the circumference of the outer tube connector 120 .

[0089] Preferably, there are two deformable members 124 , which are evenly arranged around the circumference of the outer tube connector 120 .

[0090] Specifically, the outer periphery of the knob 110 is provided with a plurality of arc-shaped grooves 118 circumferentially arranged around the knob 110 for matching with the fingertips of the operator.

[0091] See also Figures 1-2 An embodiment of the present application further provides an ultrasonic cutting instrument 200, which includes a transducer 201 and an ultrasonic instrument handle 10. The transducer is connected to the ultrasonic instrument handle and is used to generate ultrasonic vibration and transmit it to the knife through a waveguide.

[0092] In the above ultrasonic cutting instrument 200, the knob 110 is rotatably connected to the operating handle 11 about the longitudinal axis. A mating hole 111 is formed along the center line of the knob 110, and a first torque limiting structure is arranged in the mating hole 111. The outer tube connector 120 is coaxial with the outer tube and fixedly connected to the proximal end of the outer tube. The outer tube connector 120 is at least partially sleeved in the mating hole 111. The outer tube connector 120 includes a second torque limiting structure. The first torque limiting structure and the second torque limiting structure cooperate to transmit a torque not greater than the second torque from the knob to the outer tube connector. The damper 130 is used to provide a preset damping between the knob 110 and the outer tube connector 120, so that the knob 110 can apply a torque not greater than the first torque to the outer tube connector 120. When the knob 110 is rotated about the center line, under the action of the first torque and the second torque, the knob 110 applies a rated torque sufficient to connect the waveguide to the transducer to the outer tube connector 120. At the same time, due to the presence of the damper 130, after the handle 11 is connected to the transducer, when the operator uses the instrument for surgical operations and rotates the knob 110 to adjust the shaft assembly 12, because the torque between the knob 110 and the outer tube connector 120 is not greater than the first torque, the problem of free travel is avoided when the knob 110 is rotated to drive the shaft assembly 12 to rotate, and the rotation of the rotary knob 110 and the shaft assembly 12 has synchronism.

[0093] Among them, at least two teeth are arranged on the circumferential side wall of the first torque-limiting structure arranged in the mating hole 111 to form the first torque-limiting structure, and the at least two teeth are evenly distributed around the center line; an outer tube connector 120, the outer tube connector 120 is coaxial with the outer tube and fixedly connected to the proximal end of the outer tube, the outer tube connector 120 is at least partially sleeved in the mating hole 111, and the outer tube connector 120 includes at least two cantilevers to form the second torque-limiting structure, and the at least two cantilevers are evenly distributed around the longitudinal axis; wherein, when the knob 110 rotates around the center line, the cantilevers cooperate with the teeth, so that the cantilevers bend in a direction away from the longitudinal axis, so that the knob 110 applies a second torque to the outer tube connector, and under the action of the first torque and the second torque, the knob 110 applies a rated torque sufficient to connect the waveguide to the transducer to the outer tube connector 120, so that an operator can hold the operating handle 11 with one hand for operation and turn the knob 110 to adjust the shaft assembly 12, and then the outer tube connector 120 can be driven to rotate by the torque less than or equal to the first torque between the knob 110 and the outer tube connector 120, and further drive the shaft assembly 12 to rotate. At this time, there is no cooperation relationship between the cantilever and the teeth. At the same time, after overcoming the preset damping of the damping member, a second torque can be generated through the cooperation between the cantilever and the teeth, and the shaft assembly 12 can be driven to rotate by the first torque and the second torque. The effect of adjusting the shaft assembly 12 at any time during the operation of the operating handle 11 is realized through a simple structure, and the problem of dead travel is avoided, and the response effect of the outer tube during the rotation of the knob 110 is improved.

[0094] An embodiment of the present application further provides an ultrasonic surgical cutting system, and the surgical cutting system includes: a host and an ultrasonic cutting instrument; the host is electrically connected to the transducer and is used to provide electrical energy to the transducer.

[0095] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0096] The above-described embodiments only represent several implementation manners of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. An ultrasonic instrument handle, characterized in that, The ultrasonic instrument handle (10) includes: An operating handle (11); A shaft assembly (12) rotatably connected to the operating handle (11) and defining a longitudinal axis, wherein the shaft assembly (12) includes an outer tube and a waveguide connected within the outer tube; A pin (13) for connecting the waveguide to the outer tube such that the waveguide and the outer tube can rotate synchronously; A blade (14) provided at the distal end of the waveguide; A knob (110) rotatably connected to the operating handle (11) about the longitudinal axis. A mating hole (111) is formed along the center line of the knob (110), and a first torque limiting structure is provided within the mating hole (111); An outer tube connector (120) coaxial with the outer tube and fixedly connected to the proximal end of the outer tube. The outer tube connector (120) is at least partially sleeved within the mating hole (111). The outer tube connector (120) includes a second torque limiting structure, and the first torque limiting structure cooperates with the second torque limiting structure to transmit a torque not greater than the second torque from the knob (110) to the outer tube connector (120); A damping member (130) for providing a preset damping between the knob (110) and the outer tube connector (120) such that the knob (110) can transmit a torque not greater than the first torque to the outer tube connector (120); Wherein, when the knob (110) is operated, under the action of the first torque and the second torque, the knob (110) applies a rated torque sufficient to connect the waveguide to the transducer (201) to the outer tube connector (120).

2. The ultrasonic instrument handle according to claim 1, characterized in that, The preset damping satisfies that the knob (110) can drive the outer tube connector (120) to rotate synchronously during the use of the ultrasonic instrument handle (10).

3. The ultrasonic instrument handle according to claim 2, characterized in that, The damping member (130) includes an elastic ring (140) sleeved on the outer periphery of the outer tube connector (120) and located between the knob (110) and the outer tube connector (120). The elastic ring (140) abuts against the inner wall of the knob (110).

4. The ultrasonic instrument handle according to claim 3, characterized in that, Two limiting convex rings (121) are provided on the outer wall of the outer tube connector (120), and the elastic ring (140) is located between the two limiting convex rings (121).

5. The ultrasonic instrument handle according to claim 3, characterized in that, The damping member (130) further includes a damping adjusting member threadedly connected to the knob (110). The damping adjusting member extends radially from the outer wall of the knob (110) through the inner wall of the knob (110) and abuts against the elastic ring (140).

6. The ultrasonic instrument handle according to claim 2, characterized in that, The damping member (130) includes a damping ring and a damping adjusting member. The damping ring is sleeved on the outer periphery of the outer tube connecting member (120) and does not abut against the inside of the knob (110). The damping adjusting member is threadedly connected to the knob (110). The damping adjusting member extends radially from the outer wall of the knob (110) through the inner wall of the knob (110) and abuts against the damping ring.

7. The ultrasonic instrument handle according to any one of claims 5 or 6, characterized in that, There are multiple damping adjusting members, and the multiple damping adjusting members are arranged at intervals around the center line.

8. The ultrasonic instrument handle according to claim 2, wherein The damping member (130) includes a set screw (153) and a pressing head (152); A through hole (112) is formed in the side wall of the knob (110). The pressing head (152) is arranged in the through hole (112), and the set screw (153) is threadedly connected to the through hole (112). Wherein, one end of the pressing head (152) abuts against the outer tube connecting member (120), and the other end is connected to the set screw (153). By adjusting the set screw (153), the pressure applied by the pressing head (152) to the outer tube connecting member (120) is controlled, so as to adjust the damping magnitude.

9. The ultrasonic instrument handle according to claim 2, wherein, There are multiple damping members (130), and the multiple damping members (130) are arranged at intervals around the center line.

10. An ultrasonic cutting instrument, characterized in that, The ultrasonic cutting instrument (200) includes a transducer (201) and the ultrasonic instrument handle (10) according to any one of claims 1-9. The transducer (201) is connected to the ultrasonic instrument handle (10) and is used to generate ultrasonic vibration and transmit it to the knife (14) through the waveguide.

11. An ultrasonic surgical cutting system, characterized in that, The surgical cutting system includes a host and the ultrasonic cutting instrument (200) according to claim 10; the host is electrically connected to the transducer (201) and is used to supply electric energy to the transducer (201).

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