Ultrasonic surgical handle, ultrasonic surgical instrument and ultrasonic surgical tool bit assembly

Abstract

The utility model provides an ultrasonic surgical handle, ultrasonic surgical instrument and ultrasonic surgical knife head subassembly wherein the ultrasonic shell handle comprises a handle shell, the handle shell is provided with a cavity, the ultrasonic knife handle comprises a connecting assembly which is arranged in the cavity and is connected with the knife head subassembly, the connecting assembly comprises a connector, the connector is provided with a front-back through channel, and the connector is provided with a through hole; the front part of the connector is provided with a mounting seat; the clamping jaw is pivotally connected to the side surface of the mounting seat through a lug on the side surface of the mounting seat, the length of the front part of the clamping jaw is greater than that of the mounting seat, and the front part of the clamping jaw is provided with a bent head part; the ultrasonic surgical handle further comprises a guide limiting piece which is fixed to the handle shell. According to the ultrasonic surgical handle, the connecting assembly is arranged in the ultrasonic surgical handle, stable and reliable connection between the tool bit assembly and the ultrasonic surgical handle is achieved, the tool bit assembly is convenient to install and easy to operate, tool shaking cannot be generated in the surgical operation process, and operation is more accurate.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of surgical medical equipment more specifically, it relates to an ultrasonic surgical handle, ultrasonic surgical instrument and ultrasonic surgical cutter head assembly. BACKGROUND

[0002] At present, the ultrasonic surgical instrument on the market includes ultrasonic transducer and ultrasonic handle cutter head assembly, first install ultrasonic transducer on ultrasonic handle cutter head assembly before operation, then connect ultrasonic transducer with ultrasonic surgical generator to use.

[0003] The ultrasonic handle cutter head assembly on the market is usually fixedly assembled together to become a complete ultrasonic surgical instrument, and even cannot be disassembled. The ultrasonic surgical instrument is discarded as a whole after sterilization, and the medical resources cannot be fully utilized and pollute the environment. UTILITY MODEL CONTENT

[0004] The utility model aims at providing an ultrasonic surgical handle, ultrasonic surgical instrument and ultrasonic surgical cutter head assembly to solve the technical problem of the existing ultrasonic handle cutter head assembly, which is strong in integrity and cannot be disassembled, leading to low utilization rate of medical resources and environmental pollution.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0006] In the first aspect, an ultrasonic handle is provided, comprising a handle shell, the handle shell has a cavity, the ultrasonic cutter handle comprises a connecting assembly arranged in the cavity and connected with a cutter head assembly, and the connecting assembly comprises:

[0007] A connector has a through channel from front to back, and the front part of the connector has a mounting seat;

[0008] A clamping jaw is pivotally connected to the side of the mounting seat through the lug on the side of the mounting seat, the length of the front part of the clamping jaw is greater than the length of the mounting seat, and the front part of the clamping jaw has a bent head;

[0009] The ultrasonic surgical handle further comprises a guide limiting piece fixed on the handle shell, wherein the connector can slide forward and backward relative to the guide limiting piece, and the clamping jaw is pivoted under the action of the guide limiting piece when the connector slides forward and backward, so that the front part of the clamping jaw is in an open state and released outside the guide limiting piece or in a closed state and accommodated in the guide limiting piece and moves a certain distance with the connector.

[0010] By adopting the above technical scheme, the connecting assembly provided in the ultrasonic surgical handle realizes stable and reliable connection between the blade head assembly and the ultrasonic surgical handle, which makes the installation of the blade head assembly convenient and simple, and the operation more accurate without tool shaking during the operation process. In an embodiment, a torsional spring is further arranged between the mounting seat and the clamping jaw, wherein the rear part of the clamping jaw has two extended connecting legs arranged on the mounting seat, the torsional spring is sleeved on a pin penetrating through the two connecting legs, one torsional arm of the torsional spring is elastically abutted on the mounting seat, and the other torsional arm of the torsional spring is elastically abutted on the clamping jaw.

[0011] In an embodiment, the guide limiting piece is provided with a slope surface slidingly matched with the clamping jaw, the slope surface gradually inclines towards the blade head assembly along the installation direction of the blade head assembly; and / or the clamping jaw is also provided with a slope surface, the slope surface of the clamping jaw is oppositely arranged with the slope surface of the guide limiting piece and can limit the opening angle of the clamping jaw together with the slope surface of the guide limiting piece in the state that the clamping jaw is released. In an embodiment, the number of the clamping jaws is 2, 3 or 4, and the number of the torsional springs is consistent with the number of the clamping jaws.

[0012] In an embodiment, the guide limiting piece is provided with a guide groove, the mounting seat is provided with a guide protrusion slidingly matched with the guide groove, the groove length direction of the guide groove is parallel to the installation direction of the blade head assembly, and the guide protrusion can slide forward and backward along the groove length direction of the guide groove in the guide groove.

[0013] In an embodiment, the ultrasonic surgical handle further comprises a driving mechanism for driving the connecting assembly to move forward and backward, the driving mechanism at least comprises:

[0014] a slide member slidingly arranged on the handle shell, the slide member being connected to the connector;

[0015] a spring providing the required force for the forward movement of the slide member when the slide member is reset;

[0016] a trigger rotatably arranged on the handle shell;

[0017] a linkage assembly arranged between the trigger and the slide member and driving the slide member to slide forward and backward when the trigger is operated.

[0018] In an embodiment, in the state that the trigger is not operated, the front part of the clamping jaw is in an open state; in the state that the trigger is operated, the clamping jaw is in a closed state and moves a certain distance with the connector.

[0019] In one embodiment, the front part of the clamping jaw is automatically restored from the closed state to the open state when the trigger is released after operation.

[0020] In one embodiment, the sliding member has a sleeve part slidingly sleeved on the connector, the rear part of the connector is provided with a fastener, and a wave spring is further arranged between the fastener and the sleeve part.

[0021] In one embodiment, the bottom of the holding part of the handle is provided with an electric socket.

[0022] In a second aspect, an ultrasonic surgical instrument is provided, which comprises the ultrasonic surgical handle as described above, and further comprises a blade head assembly detachably mounted on the ultrasonic surgical handle, wherein the blade head assembly comprises a blade rod extending in the front-rear direction, an inner tube sleeved outside the blade rod, and an outer tube sleeved outside the inner tube, the blade rod and the outer tube are fixed to each other and arranged to be capable of synchronous front-rear movement relative to the inner tube, the inner tube comprises an inner tube body and a flange part protruding from the rear end of the inner tube body, the flange part comprises two annular flanges and an annular groove between the two annular flanges, the outer diameter of the flange at the front part of the flange part is larger than that of the flange at the rear part of the flange part, the annular groove is used to accommodate the head part of the clamping jaw of the ultrasonic surgical handle and facilitate the removal of the head part of the clamping jaw, the blade rod is capable of relative sliding in the axial direction and is arranged in the channel, and the rear end of the blade rod is fixedly connected with the shaft of the amplitude rod of the transducer.

[0023] In one embodiment, the blade head assembly further comprises a knob fixed outside the outer tube and used to drive the blade head assembly to rotate around its own axis.

[0024] In one embodiment, the rear part of the knob is a circular sleeve, the blade head assembly passes through the blade rod, the inner tube, the outer tube, and the circular sleeve of the knob by a limiting pin and connects the four together.

[0025] In a third aspect, an ultrasonic surgical blade head assembly is provided, which comprises a blade rod extending in the front-rear direction, an inner tube sleeved outside the blade rod, and an outer tube sleeved outside the inner tube, the blade rod and the outer tube are fixed to each other and arranged to be capable of synchronous front-rear movement relative to the inner tube, the inner tube comprises an inner tube body and a flange part protruding from the rear end of the inner tube body, the flange part comprises two annular flanges and an annular groove between the two annular flanges, the outer diameter of the flange at the front part of the flange part is larger than that of the flange at the rear part of the flange part; the blade head assembly further comprises a knob fixed outside the outer tube and used to drive the blade head assembly to rotate around its own axis, the rear part of the knob is a circular sleeve, the blade head assembly passes through the blade rod, the inner tube, the outer tube, and the circular sleeve of the knob by a limiting pin and connects the four together.

[0026] In one embodiment, the flange is integrally provided with the inner tube.

[0027] In one embodiment, the flange extends rearwardly beyond the rear of the outer tube.

[0028] In one embodiment, the rear portion of the blade rod always extends rearwardly beyond the inner tube and the outer tube, and the rear portion of the blade rod is connectable to a horn shaft of the transducer assembly by means of a threaded connection.

[0029] In one embodiment, the blade head assembly further comprises a gripper at the front portion, the gripper being pivotally provided between the front portion of the inner tube and the front portion of the outer tube, the blade rod having a blade rod head at the front portion, the inner tube being movable relative to the outer tube in the front-rear direction to cause the gripper to open or close relative to the blade rod head.

[0030] In one embodiment, the blade rod, the inner tube and the outer tube are coaxially provided, the blade rod being relatively slidably provided in the inner tube in the front-rear direction, the outer tube being relatively slidably provided outside the inner tube, a limiting pin being provided between the blade rod and the outer tube to keep the blade rod and the outer tube relatively fixed, a waist-shaped slot being provided in the inner tube in the front-rear direction, the limiting pin being slidably provided in the waist-shaped slot.

[0031] In one embodiment, an ultrasonic surgical instrument is provided, comprising an ultrasonic surgical handle and a blade head assembly detachably connected to the ultrasonic surgical handle,

[0032] The blade head assembly is as described above, and the ultrasonic surgical handle comprises a handle housing having a cavity and a connecting assembly provided in the cavity and used for connecting the blade head assembly.

[0033] In one embodiment, the connecting assembly at least comprises:

[0034] a connector having a channel extending through the front-rear direction, the front portion of the connector having a mounting seat with a substantially rectangular shape;

[0035] a clamping jaw being pivotally connected to the side surface of the mounting seat by means of a lug of the side surface of the mounting seat, the front portion of the clamping jaw having a length greater than that of the mounting seat, the clamping jaw having a bent head portion.

[0036] In one embodiment, the ultrasonic surgical handle further comprises a guide stopper fixed on the handle shell, wherein the connector is capable of sliding forward and backward relative to the guide stopper, and the jaw is pivoted under the action of the guide stopper while the connector slides forward and backward, so that the front part of the jaw is in an open state and released outside the guide stopper or in a closed state and accommodated in the guide stopper and moves a certain distance with the connector.

[0037] In one embodiment, the knife rod is capable of being axially and relatively slidably arranged in the channel, and the rear end of the knife rod is fixedly connected with the amplitude rod shaft of the transducer assembly, and the transducer assembly can be wholly or partially accommodated in the cavity by the ultrasonic surgical handle. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0039] Figure 1 It is a perspective view of the ultrasonic surgical handle provided by the embodiment of the present application.

[0040] Figure 2 It is a perspective view of the ultrasonic surgical instrument provided by the embodiment of the present application, wherein the hidden part is the handle shell.

[0041] Figure 3 It is an exploded view of the ultrasonic surgical handle provided by the embodiment of the present application.

[0042] Figure 4 It is a perspective view of the connector provided by the embodiment of the present application.

[0043] Figure 5 It is a perspective view of the guide stopper provided by the embodiment of the present application.

[0044] Figure 6 It is a perspective view of the torsional spring provided by the embodiment of the present application.

[0045] Figure 7 It is a perspective view of the jaw provided by the embodiment of the present application.

[0046] Figure 8 It is an exploded view of the connecting assembly, the sliding member and the guide stopper provided by the embodiment of the present application.

[0047] Figure 9is a perspective view of the tool head assembly provided by the embodiment of the present application.

[0048] Figure 10 is an exploded view of the tool head assembly provided by the embodiment of the present application.

[0049] Figure 11 is a top view of the tool head assembly provided by the embodiment of the present application.

[0050] Figure 12 is a perspective view of the tool head assembly provided by the embodiment of the present application, wherein the tool head assembly is provided with a knob.

[0051] The reference signs in the drawings are as follows:

[0052] 100, ultrasonic surgical handle; 200, tool head assembly; 300, connecting assembly; 400, driving mechanism;

[0053] 101, handle shell; 102, guide limiting piece; 103, transducer; 104, electrical socket;

[0054] 1021, inclined surface; 1022, guide groove;

[0055] 201, tool rod; 202, inner tube; 203, outer tube; 204, flange piece; 205, knob; 206, circular sleeve; 207, holder; 208, limiting pin;

[0056] 2011, tool rod head; 2041, flange; 2042, annular groove; 2021, inner tube body; 20211, waist-shaped groove;

[0057] 301, connector; 302, mounting seat; 303, clamping jaw; 304, torsional spring; 305, leg; 306, fastener; 307, pin;

[0058] 3021, lug; 3022, guide protrusion; 3031, inclined surface; 3041, torsional arm;

[0059] 401, sliding piece; 402, spring; 403, trigger; 405, sleeve part; 406, wave spring. DETAILED DESCRIPTION

[0060] In order to make the technical problems, technical solutions and beneficial effects of the present application more clearly understood, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0061] It should be noted that when an element is referred to as being "fixed" or "set" on another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected" to another element, it can be directly connected or indirectly connected to the other element.

[0062] It should be understood that, for the purpose of describing the relative position relationship of the components in the ultrasonic surgical instrument, the above and below descriptions about the front-rear direction are defined with reference to the direction observed by the operator when holding the ultrasonic surgical knife to operate, wherein the position where the ultrasonic surgical instrument acts on the surgical site is front, and the position where the ultrasonic surgical instrument is close to the human body is rear.

[0063] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating relative importance or indicating the number of technical features. In the description of the present application, the meaning of "multiple" is two or more than two, unless otherwise specifically limited. The specific implementation of the present application will be described in more detail below in combination with specific embodiments:

[0064] As shown in Figure 1 and Figure 2 , the ultrasonic surgical handle 100 provided by the embodiment of the present application comprises:

[0065] The ultrasonic surgical handle 100 comprises a handle shell 101, the handle shell 101 has a cavity, and the ultrasonic surgical handle 101 comprises a connecting assembly 300 arranged in the cavity and connected with the knife head assembly 200;

[0066] Please refer to Figures 3 to 5 , the connecting assembly 300 comprises a connector 301, the connector 301 has a through channel in front and back, and the front part of the connector 301 has a mounting seat 302, the shape of the mounting seat 302 can be generally rectangular or circular, etc.

[0067] A clamping jaw 303 is pivotably connected to the side of the mounting seat 302 through a lug 3021 on the side of the mounting seat 302, the length of the front part of the clamping jaw 303 is greater than the length of the mounting seat 302, and the clamping jaw 303 has a bent head; that is, the front part of the clamping jaw 303 protrudes from the front end of the mounting seat 302.

[0068] The ultrasonic surgical handle 100 further comprises a guide limiting piece 102 fixed on the handle shell 101, wherein the connector 301 can slide forward and backward relative to the guide limiting piece 102, and the clamping jaw 303 is pivoted while the connector 301 slides forward and backward, so that the front part of the clamping jaw 303 is in an open state and released outside the guide limiting piece 102 or in a closed state and accommodated in the guide limiting piece 102 and moves a certain distance with the connector 301.

[0069] Specifically, the ultrasonic surgical handle 101 refers to a component for holding by a doctor, and the ultrasonic surgical handle 101 is used to connect the blade head assembly 200, while the doctor can control the blade head assembly 200 to cut and coagulate blood through the ultrasonic surgical handle 101. The ultrasonic surgical handle 101 comprises a handle shell 101, which refers to a shell part for holding by a doctor; the handle shell 101 is hollow and has a cavity, and the ultrasonic surgical handle 101 further comprises a connecting assembly 300, which is arranged in the cavity and detachably connected with the blade head assembly 200.

[0070] The connecting assembly 300 refers to an assembly for realizing detachable connection with the blade head assembly 200.

[0071] The connecting assembly 300 comprises a connector 301 and a clamping jaw 303, wherein the connector 301 has a straight channel, the channel penetrates through the connector 301 along the front-rear direction of the connector 301, in the drawings, the X direction is the front direction of the connector 301, and the Y direction is the rear direction of the connector 301, and the front part of the connector 301 has a mounting seat 302, here, it can be understood that the front part refers to the part of the mounting seat 302 close to the blade head assembly 200.

[0072] The shape of the mounting seat 302 comprises but is not limited to a substantially rectangular or circular shape, and the mounting seat 302 is used to be slidably matched with the guide limiting piece 102, so that the shape of the mounting seat 302 is suitable for the shape of the guide limiting piece 102, so that the two can be slidably matched with each other.

[0073] The side surface of the mounting seat 302 is provided with a lug 3021, and the clamping jaw 303 is pivotably connected with the side surface of the mounting seat 302 through the lug 3021, that is, the clamping jaw 303 is connected with the mounting seat 302 through a shaft, and the clamping jaw 303 can rotate around the shaft relative to the mounting seat 302, and the length of the front part of the clamping jaw 303 is greater than the length of the mounting seat 302, so that the front part of the clamping jaw 303 can be exposed outside the mounting seat 302, which is beneficial to the clamping jaw 303 to clamp the blade head assembly 200.

[0074] The guide limiting piece 102 refers to a component for guiding the sliding direction of the connector 301 and limiting the position of the clamping jaw 303 to make the clamping jaw 303 release or retract, and the guide limiting piece 102 is fixed on the handle shell 101.

[0075] The connector 301 can slide forward and backward relative to the guide limiting piece 102, that is, when the connector 301 moves forward relative to the guide limiting piece 102 by a certain displacement, the front part of the clamping jaw 303 is in an open state and is released outside the guide limiting piece 102; and when the connector 301 moves backward relative to the guide limiting piece by a certain displacement, the front part of the clamping jaw 303 is in a closed state and is accommodated in the guide limiting piece 102, and the connector 301 can also move a certain distance.

[0076] The working principle of the ultrasonic surgical instrument provided in the embodiment is as follows:

[0077] The cutter head assembly 200 is detachably connected with the connecting assembly 300, the connector 301 of the connecting assembly 300 can move forward and backward relative to the guide limiting piece 102, when the connector 301 moves forward relative to the guide limiting piece 102, the clamping jaw 303 on the connector 301 is pivoted, the front part of the clamping jaw 303 is in an open state and is released outside the guide limiting piece 102, the flange piece 204 of the cutter head assembly 200 is loosened, and the two can be separated.

[0078] When the connector 301 moves backward relative to the guide limiting piece 102, the clamping jaw 303 on the connector 301 is pivoted, the front part of the clamping jaw 303 is in a closed state, so that the flange piece 204 of the cutter head assembly 200 can be accommodated in the guide limiting piece 102 and the annular groove 2042 can accommodate the head part of the clamping jaw 303, so that the cutter head assembly 200 is connected with the connecting assembly 300, in addition, the connector 301 can also move a certain distance synchronously with the guide limiting piece 102, so as to realize the surgical action of the cutter head assembly 200.

[0079] By adopting the above technical scheme, the connecting assembly 300 in the ultrasonic surgical handle 100 realizes stable and reliable connection between the cutter head assembly 200 and the ultrasonic surgical handle 100, which makes the installation of the cutter head assembly 200 convenient and simple, and the surgical operation does not produce tool shaking, and the operation is more accurate.

[0080] Please refer to Figure 4 , Figure 6 and Figure 7 In an embodiment, the ultrasonic surgical handle 100 further comprises a torsion spring 304 arranged between the mounting seat 302 and the clamping jaw 303, wherein the rear part of the clamping jaw 303 has two extended supporting legs 305 connected with the mounting seat 302, the torsion spring 304 is sleeved on a pin penetrating through the two supporting legs 305, one torsion arm 3041 of the torsion spring 304 elastically abuts against the mounting seat 302, and the other torsion arm 3041 of the torsion spring 304 elastically abuts against the clamping jaw 303.

[0081] Here, it can be understood that the torsion spring 304 refers to an elastic member that provides the opening elastic force of the clamping jaw 303, and the torsion spring 304 causes the clamping jaw 303 to open and thus the front part of the clamping jaw 303 to be in an open state.

[0082] The torsion spring 304 is arranged between the mounting seat 302 and the clamping jaw 303, the rear part of the clamping jaw 303 has a leg 305 that extends out and is connected to the mounting seat 302, and a pin is connected between the two legs 305.

[0083] The torsion spring 304 is sleeved on the pin, and the torsion spring 304 has two torsion arms 3041, one of which elastically abuts against the mounting seat 302, and the other of which elastically abuts against the clamping jaw 303, so that when the connector 301 drives the clamping jaw 303 of the mounting seat 302 to move forward, the guide limiting member 102 releases the clamping jaw 303, and the elastic force of the torsion spring 304 causes the front part of the clamping jaw 303 to be in an open state, which is beneficial to the clamping of the flange member 204 by the clamping jaw 303, thereby realizing the fixed connection of the tool bit assembly 200.

[0084] By adopting the above technical scheme, the torsion spring 304 provides the elastic force of the clamping jaw 303, so that the clamping jaw 303 can be in an open state under the elastic force, which is beneficial to the fixed connection of the tool bit assembly 200.

[0085] Please refer to Figure 5 and Figure 7 In one embodiment, the guide limiting member 102 is provided with a slope 1021 that slidingly cooperates with the clamping jaw 303, and the slope 1021 gradually inclines towards the direction close to the tool bit assembly 200 along the mounting direction of the tool bit assembly 200; in other embodiments, the clamping jaw 303 is also provided with a slope 3031, and the slope 3031 of the clamping jaw 303 is oppositely arranged with the slope 1021 of the guide limiting member 102 and can limit the opening angle of the clamping jaw 303 together with the slope 1021 of the guide limiting member 102 in the state that the clamping jaw 303 is released.

[0086] Here, it can be understood that the slope 1021 of the guide limiting member 102 is a surface of the guide limiting member 102 for slidingly cooperating with the clamping jaw 303, and the number of the slope 1021 of the guide limiting member 102 corresponds to the number of the clamping jaw 303. For example, the number of the clamping jaw 303 is two, and the two clamping jaws 303 are oppositely arranged, so that the number of the slope 1021 of the guide limiting member 102 is also two, the two slopes 1021 of the guide limiting member 102 are oppositely arranged, and the distance between the two slopes 1021 of the guide limiting member 102 gradually decreases from the front part of the guide limiting member 102 to the rear part of the guide limiting member 102, so that the two slopes 1021 of the guide limiting member 102 are inclined, which is beneficial to the guiding of the clamping jaw 303 by the slope 1021 of the guide limiting member 102.

[0087] Similarly, the inclined surface 3031 of the clamping jaw 303 refers to the surface of the clamping jaw 303 for sliding fit with the guide limiting member 102, and the inclined surface 3031 of the clamping jaw 303 is also inclinedly matched with the inclined surface 1021 of the guide limiting member 102, so that the opening angle of the clamping jaw 303 can be limited when the two are slidingly fitted.

[0088] By adopting the above technical solution, the clamping jaw 303 can be switched between the closed state and the open state, facilitating clamping and taking out of the tool bit assembly 200. In addition, the inner tube 202 can be clamped and moved together with the inner tube 202 by rotating the trigger 403 by a small displacement, improving the operation efficiency and shortening the operation time.

[0089] The clamping jaw 303 shown in the figure is 2, and in other embodiments, the number of clamping jaws 303 can be 3 or 4, and the number of torsion springs 304 is consistent with the number of clamping jaws 303.

[0090] By adopting the above technical solution, the number of clamping jaws 303 can be increased to improve the stability of clamping the tool bit assembly 200.

[0091] Please refer to Figure 4 and Figure 5 In an embodiment, the guide limiting member 102 is provided with a guide groove 1022, and the mounting seat 302 is provided with a guide protrusion 3022 slidingly fitted with the guide groove 1022, the groove length direction of the guide groove 1022 is parallel to the axis of the connector 301, and the guide protrusion 3022 can slide forward and backward along the groove length direction of the guide groove 1022 in the guide groove 1022.

[0092] By adopting the above technical solution, the sliding fit of the guide groove 1022 and the guide protrusion 3022 makes the connector 301 slide forward and backward along its own axis, so that the stability of the connector 301 is higher when sliding. The number of guide protrusions 3022 can be determined according to specific needs, and in the embodiment, the number of guide protrusions 3022 is 2 and is symmetrically distributed around the axis of the mounting seat 302. In other embodiments, the number of guide protrusions 3022 is 1 or 3 or more and is symmetrically distributed around the axis of the mounting seat 302.

[0093] Please refer to Figure 2 and Figure 8 In an embodiment, the ultrasonic surgical handle 100 further comprises a driving mechanism 400 for driving the connection assembly 300 to move forward and backward, and the driving mechanism 400 at least comprises:

[0094] The sliding member 401 is slidingly arranged on the handle housing 101, and the sliding member 401 is connected to the connector 301;

[0095] The spring 402 provides the force required for the forward movement of the slider 401 when it is reset;

[0096] The trigger 403 is rotatably arranged on the handle housing 101.

[0097] The linkage assembly is arranged between the trigger 403 and the slider 401 and is used to drive the slider 401 to slide forward and backward when the trigger 403 is operated.

[0098] Here, it can be understood that the driving mechanism 400 refers to a mechanism for driving the connection assembly 300 to move forward and backward.

[0099] In this embodiment, the driving mechanism 400 is a manual driving mechanism 400, and of course in other embodiments, the driving mechanism 400 can be an electric driving mechanism 400, which directly drives the connection assembly 300 to move forward and backward through a motor.

[0100] In this embodiment, the driving mechanism 400 includes the slider 401, the spring 402, the trigger 403, and the linkage assembly, wherein the slider 401 is slidably arranged on the handle housing 101, i.e., the slider 401 can move along the handle housing 101 in the forward and backward directions of the center line of the guide limiting piece 102 mounted on the handle housing 101. Since the slider 401 is connected to the connector 301, the slider 401 can drive the connector 301 to slide forward and backward.

[0101] The spring 402 is connected to the slider 401, and the spring 402 is an elastic member for providing a buffer to the rear end of the slider 401; the elastic force of the spring 402 can also drive the slider 401 to move forward and reset.

[0102] The trigger 403 refers to a component for the doctor to operate; the trigger 403 is rotatably arranged on the handle housing 101, i.e., the trigger 403 can be rotated relative to the handle housing 101 under the operation of the doctor, such as rotating the trigger 403 or cocking the trigger 403.

[0103] The linkage assembly is arranged between the trigger 403 and the slider 401 and is used to drive the slider 401 to move forward and backward when the trigger 403 is rotated. Here, the linkage assembly is a mechanism including a connecting rod, so as to convert the rotation of the trigger 403 into the sliding of the slider 401. When the trigger 403 is rotated under the operation of the doctor, the trigger 403 drives the slider 401 to slide forward and backward through the linkage assembly, thereby driving the connector 301 to slide forward and backward.

[0104] By adopting the above technical scheme, the doctor manually operates the connector 301, i.e., the forward and backward movement of the connector 301.

[0105] In one embodiment, the trigger 403 is in an unoperated state, the front part of the clamping jaw 303 is in an open state; the trigger 403 is in an operated state, the clamping jaw 303 is gradually in a closed state and moves a certain distance with the connector 301 under the limiting of the guide limiting piece 102.

[0106] Here, it can be understood that, in the unoperated state of the trigger 403, the elastic force of the spring 402 drives the slider 401 to slide forward, the slider 401 drives the connector 301 to slide forward, the clamping jaw 303 on the connector 301 moves forward, the guide limiting piece 102 no longer limits the clamping jaw 303, and the front part of the clamping jaw 303 gradually enters the open state under the action of the torsional spring 304.

[0107] In the operated state of the trigger 403, the trigger 403 drives the slider 401 to slide backward through the linkage assembly, the slider 401 drives the connector 301 to slide backward, the clamping jaw 303 on the connector 301 moves backward, the guide limiting piece 102 limits the clamping jaw 303 to make the clamping jaw 303 in a closed state, and the clamping jaw 303 can move a certain distance synchronously with the connector 301.

[0108] By adopting the above technical solution, the operator can manually operate the driving mechanism 400, and the flexibility of operation is improved.

[0109] In one embodiment, when the trigger 403 is released after operation, the front part of the clamping jaw 303 automatically recovers from the closed state to the open state.

[0110] Here, it can be understood that the torsional spring 304 is arranged between the clamping jaw 303 and the connector 301, when the trigger 403 is released after operation, the spring 402 drives the slider 401 to slide forward, and then drives the connector 301 to slide forward, the guide limiting piece 102 no longer limits the clamping jaw 303, and the clamping jaw 303 automatically recovers to the open state under the elastic force of the torsional spring 304.

[0111] By adopting the above technical solution, the operation of the trigger 403 is linked with the opening action of the clamping jaw 303, further saving the manual operation steps of the operator, and improving the operation efficiency.

[0112] In one embodiment, the slider 401 has a sleeve part 405 which is sleeved on the connector 301 in a sliding manner, the rear part of the connector 301 is provided with a fastener 306, and the wave spring 406 is further arranged between the fastener 306 and the sleeve part 405.

[0113] Here, it can be understood that the shape and size of the sleeve part 405 match the shape and size of the wave spring 406, so that the sleeve part 405 can just accommodate the wave spring 406.

[0114] By adopting the technical scheme, the sleeve part 405 is used to reinforce the structure of the wave spring 406.

[0115] Please refer to Figure 2 In one embodiment, the bottom of the grip part of the handle shell 101 is provided with an electric socket 104.

[0116] Here, it can be understood that the electric socket 104 refers to a component for electrically connecting with the transducer 301, so as to realize the power connection of the transducer 301.

[0117] By adopting the technical scheme, the ultrasonic surgical instrument can be conveniently plugged in for use.

[0118] Please refer to Figures 9 to 11 In a second aspect, an ultrasonic surgical instrument is provided, comprising the ultrasonic surgical handle 100 as described above, and further comprising a blade head assembly 200 detachably mounted on the ultrasonic surgical handle 100, wherein the blade head assembly 200 comprises: a blade rod 201 extending in the front-rear direction, an inner tube 202 sleeved outside the blade rod 201, and an outer tube 203 sleeved outside the inner tube 202, the blade rod 201 and the outer tube 203 are fixed to each other and arranged to be capable of moving forward and backward synchronously relative to the inner tube 202, the inner tube 202 comprises an inner tube body 2021 and a flange 204 protruding from the rear end of the inner tube body 2021, the flange 204 comprises two flanges 2041 and an annular groove 2042 located between the two flanges 2041, the outer diameter of the flange 2041 at the front part of the flange 204 is greater than that of the flange 2041 at the rear part of the flange 204, the annular groove 2042 is used to accommodate the head part of the clamping jaw 303 of the ultrasonic surgical handle 100 and facilitate the removal of the head part of the clamping jaw 303, the blade rod 201 is arranged to be capable of relative sliding along the axial direction in the channel, and the rear end part of the blade rod 201 is fixedly connected with the variable amplitude rod shaft of the transducer 103.

[0119] The blade head assembly 200 refers to an assembly for realizing the surgical action of cutting and suturing; the blade head assembly 200 comprises the blade rod 201, the inner tube 202, and the outer tube 203; wherein the blade rod 201, the inner tube 202, and the outer tube 203 all extend in the front-rear direction.

[0120] The blade rod 201 refers to a rod body for fixedly connecting the blade head assembly 200 and the connecting assembly 300, and at the same time, the blade rod 201 is also used to support the inner tube 202 and the outer tube 203.

[0121] The inner tube 202 refers to a tube body sleeved outside the blade rod 201 and arranged inside the outer tube 203, and the outer tube 203 refers to a tube body sleeved outside the inner tube 202; the blade rod 201 and the outer tube 203 are fixed to each other and arranged to be capable of moving forward and backward synchronously relative to the inner tube 202.

[0122] The inner tube 202 comprises an inner tube body 2021 and a flange 204, wherein the flange 204 is located at the rear end of the inner tube body 2021 and protrudes from the outer tube 203 wall of the inner tube body 2021, the flange 204 comprises two flanges 2041 and an annular groove 2042, wherein the two flanges 2041 are arranged in parallel and spaced apart, and the annular groove 2042 is formed between the two flanges 2041.

[0123] The outer diameter of the flange 2041 at the front of the flange 204 is greater than the outer diameter of the flange 2041 at the rear of the flange 204, so that the clamping jaw 303 clamps the flange 204 from rear to front to achieve that the clamping jaw 303 is accommodated in the annular groove 2042, in addition, the clamping jaw 303 loosens the flange 204 from front to rear, so that the annular groove 2042 can accommodate the head of the clamping jaw 303 and also facilitate the removal of the head of the clamping jaw 303.

[0124] Please refer to Figure 12 In an embodiment, the tool head assembly 200 further comprises a knob 205 fixed outside the outer tube 203 and used to drive the tool head assembly 200 to rotate around its own axis.

[0125] In an embodiment, the rear part of the knob 205 is a circular sleeve 206, and the tool head assembly 200 is connected together by a limiting pin penetrating through the tool shank 201, the inner tube 202, the outer tube 203 and the circular sleeve 206 of the knob 205.

[0126] Here, it can be understood that the knob 205 is used for the doctor to rotate, and the circular sleeve 206 is used to be fixed on the handle shell 101, and optionally the circular sleeve 206 can be threadedly connected with the handle shell 101, and rotating the knob 205 can make the circular sleeve 206 be threadedly connected with the handle shell 101.

[0127] By adopting the above technical scheme, the disassembly and assembly mode of the tool head assembly 200 is simplified.

[0128] In an embodiment, the flange 204 is integrally arranged with the inner tube body 2021.

[0129] By adopting the above technical scheme, the flange 204 and the inner tube body 2021 can be integrally formed, and the integration degree is improved.

[0130] In an embodiment, the flange 204 protrudes rearward beyond the rear of the outer tube 203.

[0131] By adopting the above technical scheme, it is beneficial to the cooperation of the flange 204 and the connecting assembly 300.

[0132] In one embodiment, the rear part of the blade rod 201 always protrudes behind the inner tube 202 and the outer tube 203, and the rear part of the blade rod 201 is connected to the amplitude rod shaft in the transducer 301 assembly by a threaded connection.

[0133] The blade rod 201 is axially relatively slidably arranged in the channel, the rear end of the blade rod 201 is fixedly connected to the amplitude rod shaft of the transducer 103, and the transducer 103 can be wholly or partially accommodated in the cavity by the ultrasonic surgical handle 100.

[0134] By adopting the above technical solution, the arrangement of the blade rod 201 and the transducer 103 is reasonable, and the space occupied by the cavity is reduced.

[0135] In one embodiment, the blade head assembly 200 further comprises a gripper 207 located at the front part, the gripper 207 is rotatably arranged between the front part of the inner tube 202 and the front part of the outer tube 203, the blade rod 201 has a blade rod head 2011 located at the front part, and the relative movement of the inner tube 202 and the outer tube 203 causes the gripper 207 to open or close relative to the blade rod head 2011. The opening and closing of the gripper 207 of the blade head assembly 200 is realized by moving the flange 204 fixed on the inner tube 202 by the gripper jaw 303. Because the gripper jaw 303 is synchronously linked with the trigger 403, the operation of the trigger 403 can realize the opening and closing of the gripper 207 of the blade head assembly 200.

[0136] By adopting the above technical solution, the gripping action of the blade head assembly 200 can be realized.

[0137] In one embodiment, the axial center lines of the blade rod 201, the inner tube 202 and the outer tube 203 are arranged in line, the blade rod 201 is relatively slidably arranged in the inner tube 202 in the front-rear direction, the outer tube 203 is relatively slidably sleeved outside the inner tube 202, a limiting pin 208 for keeping the blade rod 201 and the outer tube 203 relatively fixed is arranged between the blade rod 201 and the outer tube 203, a waist-shaped groove 20211 extending in the front-rear direction is formed in the inner tube 2021, and the limiting pin 208 is slidably arranged in the waist-shaped groove 20211.

[0138] By adopting the above technical solution, the fixation of the blade rod 201, the inner tube 202 and the outer tube 203 of the blade head assembly 200 is realized.

[0139] In one embodiment, an ultrasonic surgical instrument is provided, comprising an ultrasonic surgical handle 100 and a blade head assembly 200 detachably connected to the ultrasonic surgical handle 100,

[0140] The ultrasonic surgical handle 100 comprises a handle housing 101 with a cavity and a connecting assembly 300 arranged in the cavity and used for connecting the blade head assembly 200.

[0141] By adopting the above technical solution, the blade head assembly 200 is detachably connected with the ultrasonic surgical handle 100, and the flexibility of operation is improved.

[0142] In an embodiment, the connecting assembly 300 at least comprises:

[0143] The connector 301 has a straight channel penetrating front and back, and the front part of the connector 301 has a mounting seat 302 with a substantially rectangular shape;

[0144] The clamping jaw 303 is pivotably connected to the side of the mounting seat 302 through the lugs 3021 of the multiple sides of the mounting seat 302, the length of the front part of the clamping jaw 303 is greater than the length of the mounting seat 302, and the clamping jaw 303 has a bent head.

[0145] By adopting the above technical solution, the structure of the connecting assembly 300 is simple.

[0146] In an embodiment, the ultrasonic surgical handle 100 further comprises a guide limiting piece 102 fixed to the handle housing 101, wherein the connector 301 can slide front and back relative to the guide limiting piece 102, and the clamping jaw 303 is pivoted under the action of the guide limiting piece 102 when the connector 301 slides front and back, so that the front part of the clamping jaw 303 is in an open state and released outside the guide limiting piece 102 or in a closed state and accommodated in the guide limiting piece 102 and moves a certain distance with the connector 301.

[0147] By adopting the above technical solution, the guide limiting piece 102 is used to drive the clamping jaw 303 to switch between the open state and the closed state.

[0148] In an embodiment, the blade rod 201 is arranged in the channel in a relative sliding manner along the axial direction, and the rear end of the blade rod 201 is fixedly connected with the variable amplitude rod shaft of the transducer 103. The transducer 103 can be wholly accommodated in the cavity of the ultrasonic surgical handle 100 and constitutes a part of the ultrasonic surgical handle 100. The transducer 103 can be partially accommodated in the cavity and replaced when it is broken.

[0149] By adopting the above technical solution, the energy of the transducer 103 is transmitted to the whole blade head assembly 200 through the blade rod 201.

[0150] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An ultrasonic surgical handpiece comprising a handpiece housing having a cavity, characterized by, The ultrasonic surgical handle comprises a connecting assembly arranged in the cavity and connected with the blade head assembly, the connecting assembly comprises: a connector having a channel through front and back, the front of the connector has a mounting seat; a clamping jaw pivotally connected to the side of the mounting seat through the lug of the side of the mounting seat, the front of the clamping jaw has a length greater than the length of the mounting seat, the front of the clamping jaw has a bent head; The ultrasonic surgical handle further comprises a guide limiting piece fixed on the handle shell, wherein the connector can slide forward and backward relative to the guide limiting piece, and the clamping jaw is pivoted under the action of the guide limiting piece while the connector slides forward and backward, so that the front of the clamping jaw is in an open state and is released outside the guide limiting piece or in a closed state and is accommodated in the guide limiting piece and moves a certain distance with the connector.

2. The ultrasonic surgical handle of claim 1, wherein, Further comprising a torsion spring arranged between the mounting seat and the clamping jaw, wherein the rear of the clamping jaw has two extended legs connected to the mounting seat, the torsion spring is sleeved on a pin penetrating the two legs, one torsion arm of the torsion spring elastically abuts on the mounting seat, and the other torsion arm of the torsion spring elastically abuts on the clamping jaw.

3. The ultrasonic surgical handle of claim 1, wherein, The guide limiting piece is provided with a slope corresponding to the sliding cooperation of the clamping jaw, the slope gradually inclines to the direction close to the blade head assembly along the mounting direction of the blade head assembly; and / or the clamping jaw is also provided with a slope, the slope of the clamping jaw is oppositely arranged with the slope of the guide limiting piece and can limit the opening angle of the clamping jaw together with the slope of the guide limiting piece in the released state of the clamping jaw.

4. The ultrasonic surgical handle of claim 2, wherein, The number of the clamping jaws is 2, 3 or 4, and the number of the torsion springs is consistent with the number of the clamping jaws.

5. The ultrasonic surgical handle of claim 1, wherein, The guide limiting piece is provided with a guide groove, the mounting seat is provided with a guide protrusion in sliding cooperation with the guide groove, the groove length direction of the guide groove is parallel to the mounting direction of the blade head assembly, and the guide protrusion can slide forward and backward along the groove length direction of the guide groove in the guide groove.

6. The ultrasonic surgical handle of Claims 1 or 2, wherein, The ultrasonic surgical handle further comprises a driving mechanism for driving the connecting assembly to move forward and backward, the driving mechanism at least comprises: a sliding piece slidingly arranged on the handle shell, the sliding piece is connected to the connector; a spring providing the required force for the forward movement of the sliding piece when the sliding piece is reset; a trigger rotationally arranged on the handle shell; a linkage assembly arranged between the trigger and the sliding piece and driving the sliding piece to slide forward and backward when the trigger is operated.

7. The ultrasonic surgical handle of claim 6, wherein, The front of the clamping jaw is in an open state in the unoperated state of the trigger, and the clamping jaw is in a closed state and moves a certain distance with the connector in the operated state of the trigger.

8. The ultrasonic surgical handle of claim 7, wherein, The front of the clamping jaw automatically recovers from the closed state to the open state when the trigger is released after operation.

9. The ultrasonic surgical handle of claim 6, wherein, The sliding member has a sleeve part slidingly sleeved on the connector, the rear part of the connector is provided with a fastener, and a wave spring is further arranged between the fastener and the sleeve part.

10. The ultrasonic surgical handle of claim 1, wherein, The bottom of the holding part of the handle is provided with an electric plug.

11. An ultrasonic surgical instrument, characterized in that: The handle further comprises a knife head assembly detachably mounted on the ultrasonic surgical handle, wherein the knife head assembly comprises a knife rod extending in the front-rear direction, an inner tube sleeved outside the knife rod, and an outer tube sleeved outside the inner tube, the knife rod and the outer tube are fixed to each other and can move forward and backward relative to the inner tube synchronously, the inner tube comprises an inner tube body and a flange protruding from the rear end of the inner tube body, the flange comprises two annular flanges and an annular groove between the two annular flanges, the outer diameter of the flange at the front part of the flange is larger than that of the flange at the rear part of the flange, the annular groove is used for accommodating the head of the clamping jaw of the ultrasonic surgical handle and facilitating the removal of the head of the clamping jaw, the rear end of the knife rod is axially and relatively slidably penetrated into the channel, and the rear end of the knife rod is fixedly connected with the amplitude rod shaft of the transducer.

12. The ultrasonic surgical instrument of claim 11, wherein the distal end of the waveguide is configured to be positioned within the patient's body. The knife head assembly further comprises a knob fixed outside the outer tube and used for driving the knife head assembly to rotate around its axis.

13. The ultrasonic surgical instrument of claim 12, wherein the distal end of the waveguide is configured to be positioned within the patient's body. The rear part of the knob is a circular sleeve, and the knife head assembly is connected together by a limiting pin penetrating through the knife rod, the inner tube, the outer tube, and the circular sleeve of the knob.

14. An ultrasonic surgical blade head assembly for use in assembly with the ultrasonic surgical handle of any one of claims 1 to 10, characterized by, The handle further comprises a knife head assembly detachably mounted on the ultrasonic surgical handle, wherein the knife head assembly comprises a knife rod extending in the front-rear direction, an inner tube sleeved outside the knife rod, and an outer tube sleeved outside the inner tube, the knife rod and the outer tube are fixed to each other and can move forward and backward relative to the inner tube synchronously, the inner tube comprises an inner tube body and a flange protruding from the rear end of the inner tube body, the flange comprises two annular flanges and an annular groove between the two annular flanges, the outer diameter of the flange at the front part of the flange is larger than that of the flange at the rear part of the flange; the knife head assembly further comprises a knob fixed outside the outer tube and used for driving the knife head assembly to rotate around its axis, the rear part of the knob is a circular sleeve, and the knife head assembly is connected together by a limiting pin penetrating through the knife rod, the inner tube, the outer tube, and the circular sleeve of the knob.

15. The ultrasonic surgical blade head assembly of claim 14, wherein, The flange is integrally arranged with the inner tube body.

16. The ultrasonic surgical blade head assembly of claim 14, wherein, The flange protrudes rearward of the outer tube.

17. The ultrasonic surgical blade head assembly of claim 14, wherein, The rear part of the knife rod always protrudes rearward of the inner tube and the outer tube, and the rear part of the knife rod is connected with the amplitude rod shaft in the transducer assembly by screw connection.

18. The ultrasonic surgical blade head assembly of claim 14, wherein, The knife head assembly further comprises a gripper at the front part, the gripper is rotatably arranged between the front part of the inner tube and the front part of the outer tube, the knife rod has a knife rod head at the front part, and the inner tube moving forward and backward relative to the outer tube causes the gripper to open or close relative to the knife rod head.

19. The ultrasonic surgical blade head assembly of claim 14, wherein, The axial lines of the three of the knife rod, the inner tube and the outer tube are arranged in line extension, the knife rod is capable of being relatively slidably penetrated in the inner tube in the front-back direction, the outer tube is capable of being relatively slidably sleeved outside the inner tube, the limiting pin is arranged between the knife rod and the outer tube for keeping the relative fixation between the knife rod and the outer tube, the waist-shaped slot extending in the front-back direction is formed on the inner tube, and the limiting pin is slidably penetrated in the waist-shaped slot.

20. An ultrasonic surgical instrument comprising an ultrasonic surgical handle and a blade head assembly detachably connected with the ultrasonic surgical handle, characterized in that: The blade head assembly is as claimed in any one of claims 14 to 19, and the ultrasonic surgical handle comprises a handle housing with a cavity and a connecting assembly arranged in the cavity and used for connecting with the blade head assembly.

21. The ultrasonic surgical instrument of claim 20, wherein the distal end of the waveguide is tapered to a point. The connecting assembly at least comprises: a connector having a channel penetrating in front and back directions, a front part of the connector having a mounting seat with a substantially rectangular shape; a clamping jaw pivotally connected to a side surface of the mounting seat through a lug of a plurality of side surfaces of the mounting seat, a front part of the clamping jaw having a length greater than that of the mounting seat, and the clamping jaw having a bent head.

22. The ultrasonic surgical instrument of claim 21, wherein the distal end of the waveguide is configured to be positioned within the patient's body. The ultrasonic surgical handle further comprises a guide limiting member fixed to the handle housing, wherein the connector is capable of sliding in front and back directions relative to the guide limiting member, and the clamping jaw is pivoted under the action of the guide limiting member while the connector is sliding in front and back directions, so that the front part of the clamping jaw is in an open state and released outside the guide limiting member or in a closed state and accommodated in the guide limiting member and moves a certain distance with the connector.

23. The ultrasonic surgical instrument of claim 21, wherein the waveguide is formed from a material having a modulus of elasticity of at least about 70 GPa. The knife rod is capable of being relatively slidably penetrated in the channel in the axial direction, a rear end of the knife rod is fixedly connected with a variable amplitude rod shaft of a transducer assembly, and the transducer assembly can be wholly or partially accommodated in the cavity by the ultrasonic surgical handle.

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