Ultrasonic surgical instrument and ultrasonic surgical system

Abstract

The invention provides an ultrasonic surgical instrument and an ultrasonic surgical system.The ultrasonic surgical instrument comprises an ultrasonic surgical handle and a tool bit assembly detachably connected with the ultrasonic surgical handle, the ultrasonic surgical handle comprises a handle shell, and the ultrasonic surgical handle comprises a connecting assembly arranged in a cavity and connected with the tool bit assembly; the connecting assembly comprises a connector which is provided with a front-back through channel; the clamping jaw is pivotally connected to the side surface of the mounting seat; the ultrasonic surgical handle further comprises a guide limiting piece, the connector can slide front and back relative to the guide limiting piece, and the clamping jaw pivots while the connector slides front and back. The front part of the clamping jaw is in an open state and is released outside the guide limiting piece or is in a closed state and is accommodated in the guide limiting piece and moves for a certain distance along with the connector; the connecting assembly improves the convenience degree of disassembly and assembly of the tool bit assembly and the stability during connection, the tool bit assembly is not prone to shaking in the surgical operation process, and operation is more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of surgical medical equipment, and more particularly to an ultrasonic surgical instrument and an ultrasonic surgical system. Background Art

[0002] With the development of minimally invasive surgery, surgical instruments used for minimally invasive surgery have made great progress. Among them, ultrasonic surgical instruments have become standard equipment for almost every minimally invasive surgical operation because of their excellent cutting and coagulation functions and the advantages of less thermal damage and less smoke compared with electrocoagulation surgical instruments such as bipolar and monopolar electrocoagulation forceps.

[0003] Currently, most ultrasonic surgical instruments used in clinical applications adopt an integrated structural design, in which the ultrasonic handle and ultrasonic blade are permanently assembled to form an inseparable integral structure. This type of integrated instrument has two significant defects: first, the ultrasonic handle and consumable parts (such as the working blade) are physically connected, which makes it impossible to achieve modular replacement, significantly reducing the reuse rate; second, the high-temperature and high-pressure sterilization after surgery requires the entire set of instruments as a sterilization unit, which not only greatly increases the consumables procurement costs of medical institutions, but also causes serious waste of resources due to the one-time disposal of the entire set of instruments. Summary of the invention

[0004] The object of the present invention is to provide an ultrasonic surgical instrument and an ultrasonic surgical system to solve the technical problem in the prior art that ultrasonic surgical instruments have a high degree of integration when leaving the factory, which reduces the reuse rate of some structures and causes waste of resources.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] In a first aspect, an ultrasonic surgical instrument is provided, comprising:

[0007] An ultrasonic surgical handle and a cutter head assembly detachably connected to the ultrasonic surgical handle, wherein the ultrasonic surgical handle comprises a handle shell having a cavity, and the ultrasonic surgical handle comprises a connecting assembly disposed in the cavity and connected to the cutter head assembly;

[0008] The connecting assembly comprises: a connector, the connector having a channel running through from front to back, and a mounting seat being provided at the front of the connector; a clamping jaw, the clamping jaw being pivotally connected to the side of the mounting seat through a lug on the side of the mounting seat, the length of the front of the clamping jaw being greater than the length of the mounting seat, and the clamping jaw having a bent head; the ultrasonic surgical handle further comprises a guide stopper, the guide stopper being fixed to the handle housing, wherein the connector can slide forward and backward relative to the guide stopper, and the clamping jaw pivots while the connector slides forward and backward, so that the front of the clamping jaw is in an open state and released outside the guide stopper, or in a closed state and received in the guide stopper and moves a certain distance with the connector;

[0009] The knife head assembly includes: a knife rod extending in the front-to-back 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 be synchronously moved back and forth relative to the inner tube. The inner tube includes an inner tube body and a flange protruding from the rear end of the inner tube body. The flange includes two flanges and an annular groove between the two flanges. The outer diameter of the flange at the front of the flange is larger than the flange at the rear of the flange. The annular groove is used to accommodate the head of the clamping jaw of the ultrasonic surgical handle and facilitate the removal of the head of the clamping jaw.

[0010] By adopting the above technical solution, the connecting component can be detachably connected to the cutter head assembly. The connector of the connecting component can be moved forward to loosen the cutter head assembly to achieve disassembly of the cutter head assembly. The connector can be moved backward to clamp and fix the cutter head assembly, thereby greatly improving the convenience of disassembly and assembly of the cutter head assembly. In addition, the clamping claws of the connecting component fix the cutter head assembly by clamping, which makes it difficult for the cutter head assembly to fall off, thereby improving the firmness of the cutter head assembly when it is fixed.

[0011] In one embodiment, the ultrasonic surgical handle also includes a torsion spring arranged between the mounting seat and the clamp, wherein the rear portion of the clamp has two protruding legs connected to the mounting seat, the torsion spring is sleeved on a pin that passes through and connects the two legs, one torsion arm of the torsion spring elastically abuts against the mounting seat, and the other torsion arm of the torsion spring elastically abuts against the clamp.

[0012] In one embodiment, the guide limit member is provided with an inclined surface which corresponds to the sliding fit of the clamping jaw, and the inclined surface gradually inclines toward the direction approaching the cutter head assembly along the installation direction of the cutter head assembly; and / or the clamping jaw is also provided with an inclined surface, and the inclined surface of the clamping jaw is arranged opposite to the inclined surface of the guide limit member and can limit the opening angle of the clamping jaw together with the inclined surface of the guide limit member when the clamping jaw is released.

[0013] In one embodiment, the guide limit member is provided with a guide groove, and the mounting seat is provided with a guide protrusion slidably matched with the guide groove, the groove length direction of the guide groove is parallel to the axial center line of the connector, and the guide protrusion can slide back and forth in the guide groove along the groove length direction of the guide groove.

[0014] In one embodiment, the ultrasonic surgical handle further includes a driving mechanism for driving the connecting assembly to move forward and backward, and the driving mechanism at least includes:

[0015] A sliding member, the sliding member is slidably disposed on the handle housing, and the sliding member is connected to the connector;

[0016] A spring, providing a force required for the sliding member to move forward when resetting;

[0017] a trigger, the trigger being rotatably disposed on the handle housing;

[0018] The linkage assembly is arranged between the trigger and the sliding member and is used to drive the sliding member to slide forward and backward when the trigger is operated.

[0019] In one embodiment, when the trigger is not operated, the front portion of the clamping jaw is in an open state; when the trigger is operated, the clamping jaw is in a closed state and moves a certain distance with the connector.

[0020] In one embodiment, when the trigger is released after being operated, the front portion of the jaw automatically returns to the open state from the closed state.

[0021] In one embodiment, the cutter head assembly also includes a dial button fixed outside the outer tube and used to drive the cutter head assembly to rotate around its own axis, the rear portion of the dial button is a circular sleeve, and the cutter head assembly penetrates the cutter rod, the inner tube, the outer tube and the circular sleeve of the dial button through a limit pin and connects the four together.

[0022] In one embodiment, the knife rod can be axially relatively slidably inserted into the channel, the rear end of the knife rod is fixedly connected to the amplitude transformer shaft of the transducer, and the transducer can be fully or partially accommodated in the cavity by the ultrasonic surgical handle.

[0023] In a second aspect, an ultrasonic surgical system is provided, comprising an ultrasonic surgical instrument as described above, a transducer electrically connected to the ultrasonic surgical instrument, and a power adapter for supplying power to the ultrasonic surgical instrument and the transducer, wherein a plug of the power adapter is connected through an electrical socket at the bottom of the ultrasonic scalpel handle.

[0024] By adopting the above technical solution, on the basis of having the advantages of the ultrasonic surgical instrument of the above embodiment, the ultrasonic housing system of this embodiment can be connected to the mains through a power adapter, without worrying about the battery life, and is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a three-dimensional structural diagram of an ultrasonic surgical instrument provided in an embodiment of the present invention.

[0027] Figure 2 It is a three-dimensional structural diagram of an ultrasonic surgical instrument provided in an embodiment of the present invention, in which a portion of the handle housing is hidden.

[0028] Figure 3 is an exploded view of an ultrasonic surgical handle provided in an embodiment of the present invention.

[0029] Figure 4 It is an exploded view of the connecting assembly, the sliding member and the guide limit member provided in the embodiment of the present invention.

[0030] Figure 5 It is a three-dimensional structural diagram of a connector provided by an embodiment of the present invention.

[0031] Figure 6 It is a three-dimensional structural diagram of the clamping jaw provided in an embodiment of the present invention.

[0032] Figure 7 It is a three-dimensional structural diagram of a torsion spring provided in an embodiment of the present invention.

[0033] Figure 8 It is a three-dimensional structural diagram of a guide limiter provided in an embodiment of the present invention.

[0034] Fig. 9 It is a three-dimensional structural diagram of the cutter head assembly provided in an embodiment of the present invention.

[0035] Fig.10 It is an exploded view of the cutter head assembly provided in an embodiment of the present invention.

[0036] Fig.11 It is a top view of the cutter head assembly provided in an embodiment of the present invention.

[0037] Fig.12 It is a three-dimensional structural diagram of a cutter head assembly provided in an embodiment of the present invention, wherein the cutter head assembly is provided with a dial button.

[0038] The reference numerals in the figures are:

[0039] 100, ultrasonic surgical handle; 200, blade assembly; 300, connecting assembly; 400, driving mechanism;

[0040] 101. handle housing; 102. guide stopper; 103. transducer; 104. electrical socket;

[0041] 1021, inclined surface; 1022, guide groove;

[0042] 201, knife bar; 202, inner tube; 203, outer tube; 204, flange; 205, dial button; 206, circular sleeve; 207, clamp; 208, limit pin;

[0043] 2011, tool bar head; 2041, flange; 2042, annular groove; 2021, inner tube body; 20211, waist groove;

[0044] 301, connector; 302, mounting seat; 303, clamping claw; 304, torsion spring; 305, supporting leg; 306, fastener; 307, pin;

[0045] 3021, lug; 3022, guide protrusion; 3031, inclined surface;

[0046] 401, sliding member; 402, spring; 403, trigger; 405, sleeve portion; 406, wave spring. DETAILED DESCRIPTION

[0047] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0048] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly located on the other element or indirectly located on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0049] It should be understood that, in order to facilitate the description of the relative positional relationship of the various components in the ultrasonic surgical instrument, the above and following descriptions of the front and back directions are all defined with reference to the direction observed by the operator when holding the ultrasonic surgical knife for operation, wherein the position where the ultrasonic surgical instrument acts on the surgical site is the front, and the position where the ultrasonic surgical instrument is close to the human body is the back.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating relative importance or indicating the number of technical features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The specific implementation of the present invention is described in more detail below in conjunction with specific embodiments:

[0051] like Figures 1 to 3 As shown, an ultrasonic surgical instrument provided by an embodiment of the present invention includes:

[0052] An ultrasonic surgical handle 100 and a cutter head assembly 200 detachably connected to the ultrasonic surgical handle 100, wherein the ultrasonic surgical handle 100 comprises a handle housing 101, the handle housing 101 having a cavity, and the ultrasonic surgical handle 101 comprises a connecting assembly 300 disposed in the cavity and connected to the cutter head assembly 200;

[0053] Please also read Figure 4 and Figure 5 The connection assembly 300 includes: a connector 301, the connector 301 has a channel running through the front and back, and the front of the connector 301 has a mounting seat 302, and the shape of the mounting seat 302 can be roughly rectangular or circular.

[0054] Please also read Figure 6 and Figure 7 The clamping jaw 303 is pivotally 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 portion of the clamping jaw 303 is greater than the length of the mounting seat 302, and the clamping jaw 303 has a bent head.

[0055] Please also read Figure 8 The ultrasonic surgical handle 100 further includes a guide stopper 102, which is fixed to the handle housing 101, wherein the connector 301 can slide forward and backward relative to the guide stopper 102, and the clamping jaw 303 pivots while the connector 301 slides forward and backward, so that the front portion of the clamping jaw 303 is in an open state and released outside the guide stopper 102, or in a closed state and received in the guide stopper 102 and moves a certain distance with the connector 301;

[0056] Please also read Figures 9 and 10 The cutter head assembly 200 includes: a cutter rod 201 extending in the front-rear direction, an inner tube 202 sleeved on the cutter rod 201 , and an outer tube 203 sleeved on the inner tube 202 .

[0057] The knife rod 201 and the outer tube 203 are fixed to each other and can be synchronously moved forward and backward relative to the inner tube 202. The inner tube 202 includes an inner tube body 2021 and a flange member 204 protruding from the rear end of the inner tube body 2021. The flange member 204 includes two flanges 2041 and an annular groove 2042 located between the two flanges 2041. The outer diameter of the flange 2041 at the front of the flange member 204 is larger than the flange 2041 at the rear of the flange member 204. The annular groove 2042 is used to accommodate the head of the clamping jaw 303 of the ultrasonic surgical handle 100 and facilitate the removal of the head of the clamping jaw 303.

[0058] Specifically, the ultrasonic surgical handle 101 refers to a component for a doctor to hold, and the ultrasonic surgical handle 101 is used to connect the blade assembly 200. At the same time, the doctor can control the blade assembly 200 to perform actions such as cutting and coagulation through the ultrasonic surgical handle 101;

[0059] The ultrasonic surgical handle 101 includes a handle shell 101, which refers to a shell part for a doctor to hold; the handle shell 101 is hollow and has a cavity, and the ultrasonic surgical handle 101 also includes a connecting component 300, which is placed in the cavity and connected to the blade assembly 200;

[0060] The connection component 300 refers to a component used to achieve a detachable connection with the cutter head component 200; the connection component 300 includes a connector 301 and a clamp 303, wherein the connector 301 has a channel, and the channel passes through the connector 301 along the front-to-back direction of the connector 301.

[0061] 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 . The front portion of the connector 301 has a mounting seat 302 . Here, it can be understood that the front portion refers to the portion of the mounting seat 302 close to the tool head assembly 200 .

[0062] It is understandable that the shape of the mounting seat 302 includes but is not limited to a roughly rectangular or circular shape, and the mounting seat 302 is used to slide with the guide limit member 102. In this way, the shape of the mounting seat 302 is suitable for the shape of the guide limit member 102, so that the two can slide with each other.

[0063] The side of the mounting seat 302 is provided with a lug 3021, and the clamping jaw 303 is pivotally connected to the side of the mounting seat 302 through the lug 3021, that is, the clamping jaw 303 is axially connected to the mounting seat 302, and the clamping jaw 303 can rotate around the axis relative to 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, so that the front part of the clamping jaw 303 can be exposed outside the mounting seat 302, which is beneficial for the clamping jaw 303 to clamp the tool head assembly 200;

[0064] The guide limiter 102 is used to guide the sliding direction of the connector 301 and to limit the position of the clamping claw 303 so that the clamping claw 303 performs a releasing action or a retracting action. The guide limiter 102 is fixed on the handle housing 101 .

[0065] It can be understood that the connector 301 can slide forward and backward relative to the guide stopper 102, that is, when the connector 301 moves forward a certain displacement relative to the guide stopper 102, the front part of the clamping jaw 303 is in an open state and is released outside the guide stopper 102; and when the connector 301 moves backward a certain displacement relative to the guide, the front part of the clamping jaw 303 is in a closed state and is received in the guide stopper 102, and can also move a certain distance with the connector 301.

[0066] The cutter head assembly 200 refers to a component used to perform surgical actions such as cutting and suturing; the cutter head assembly 200 includes a cutter rod 201, an inner tube 202 and an outer tube 203.

[0067] Among them, the knife rod 201, the inner tube 202 and the outer tube 203 all extend in the front-to-back direction. The knife rod 201 refers to a rod body used to fix the connection between the cutter head assembly 200 and the connecting assembly 300. At the same time, the knife rod 201 is also used to support the inner tube 202 and the outer tube 203; the inner tube 202 refers to a tube body that is sleeved outside the knife rod 201 and placed inside the outer tube 203, and the outer tube 203 refers to a tube body that is sleeved outside the inner tube 202; the knife rod 201 and the outer tube 203 are fixed to each other and are configured to be able to move forward and backward synchronously relative to the inner tube 202.

[0068] The inner tube 202 includes 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 wall of the inner tube body 2021 , and the flange 204 includes two flanges 2041 and an annular groove 2042 .

[0069] The two flanges 2041 are arranged in parallel and spaced apart, and an annular groove 2042 is formed between the two flanges 2041. The outer diameter of the flange 2041 at the front of the flange member 204 is greater than the outer diameter of the flange 2041 at the rear of the flange member 204. In this way, the clamping jaw 303 clamps the flange member 204 from back to front so that the clamping jaw 303 is accommodated in the annular groove 2042.

[0070] In addition, the clamping jaw 303 loosens the flange member 204 from front to back, so that the annular groove 2042 can accommodate the head of the clamping jaw 303 and can also facilitate the removal of the head of the clamping jaw 303.

[0071] The working principle of the ultrasonic surgical instrument provided in this embodiment is as follows:

[0072] The cutter head assembly 200 is detachably connected to the connecting assembly 300, and the connector 301 of the connecting assembly 300 can move forward and backward relative to the guide limit member 102. When the connector 301 moves forward relative to the guide limit member 102, the jaw 303 on the connector 301 pivots, and the front part of the jaw 303 is in an open state and is released outside the guide limit member 102. The jaw 303 loosens the flange 204 of the cutter head assembly 200, and the two can be separated.

[0073] When the connector 301 moves backward relative to the guide limit member 102, the jaw 303 on the connector 301 pivots and the front part of the jaw 303 is in a closed state. In this way, the flange 204 of the blade assembly 200 can be accommodated in the guide limit member 102 and the annular groove 2042 can accommodate the head of the jaw 303, thereby connecting the blade assembly 200 to the connecting assembly 300. In addition, the connector 301 can also move a certain distance synchronously with the guide limit member 102, thereby realizing the surgical action of the blade assembly 200.

[0074] By adopting the above-mentioned technical scheme, the connecting component 300 can be detachably connected with the cutter head component 200. The connector 301 of the connecting component 300 can be moved forward to loosen the cutter head component 200, so as to realize the disassembly of the cutter head component 200. The connector 301 can be moved backward to clamp and fix the cutter head component 200, thus greatly improving the convenience of disassembly and assembly of the cutter head component 200. In addition, the clamping claw 303 of the connecting component 300 fixes the cutter head component 200 by clamping, so that the cutter head component 200 is not easy to fall off, thereby improving the firmness of the cutter head component 200 when it is fixed.

[0075] In addition, the connection assembly 300 in the ultrasonic surgical handle 100 realizes a stable and reliable connection between the blade assembly 200 and the ultrasonic surgical handle 100, which makes the blade assembly 200 easy to install and simple to operate. There will be no tool shaking during the surgical operation, and the operation is more precise.

[0076] Please also read Figure 3 , Figure 4 and Figure 7 In one embodiment, the ultrasonic surgical handle 100 further includes a torsion spring 304 disposed between the mounting seat 302 and the clamping jaw 303, wherein the rear portion of the clamping jaw 303 has two extended legs 305 connected to the mounting seat 302, the torsion spring 304 is sleeved on a pin 307 penetrating and connecting the two 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.

[0077] Here, it can be understood that the torsion spring 304 refers to an elastic member that provides elastic force for the jaw 303 to open. The torsion spring 304 causes the jaw 303 to open, thereby causing the front of the jaw 303 to be in an open state. The torsion spring 304 is arranged between the mounting seat 302 and the jaw 303. The rear of the jaw 303 has a leg 305, which extends and is connected to the mounting seat 302. A pin 307 is connected between the two legs 305. The torsion spring 304 is sleeved on the pin 307. 04 has two torsion arms 3041, one of which is elastically abutted against the mounting seat 302, and the other is elastically abutted against the clamping jaw 303. In this way, when the connector 301 drives the clamping jaw 303 of the mounting seat 302 to move forward, the guide limit member 102 releases the clamping jaw 303, and the elastic force of the torsion spring 304 makes the front part of the clamping jaw 303 in an open state, which is beneficial for the clamping jaw 303 to clamp the flange member 204, thereby realizing the fixed connection of the tool head assembly 200.

[0078] By adopting the above technical solution, the torsion spring 304 provides elastic force to 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 cutter head assembly 200 .

[0079] Please also read Figure 4 , Figure 6 and Figure 8 In one embodiment, the guide limiter 102 is provided with an inclined surface 1021 which corresponds to and slides with the clamping jaw 303, and the inclined surface 1021 gradually inclines toward the direction close to the cutter head assembly 200 along the installation direction of the cutter head assembly 200; in other embodiments, the clamping jaw 303 is also provided with an inclined surface 3031, and the inclined surface 3031 of the clamping jaw 303 is arranged opposite to the inclined surface 1021 of the guide limiter 102 and can limit the opening angle of the clamping jaw 303 together with the inclined surface 1021 of the guide limiter 102 when the clamping jaw 303 is released.

[0080] Here, it can be understood that the inclined surface 1021 of the guide limiter 102 refers to the surface on the guide limiter 102 for slidingly cooperating with the clamping jaws 303, and the number of the inclined surfaces 1021 of the guide limiter 102 corresponds to the clamping jaws 303. For example, the number of the clamping jaws 303 is two, and the two clamping jaws 303 are arranged opposite to each other, so the number of the inclined surfaces 1021 of the guide limiter 102 is also two, and the inclined surfaces 1021 of the two guide limiters 102 are arranged opposite to each other, and the distance between the inclined surfaces 1021 of the two guide limiters 102 gradually decreases from the front of the guide limiter 102 to the rear of the guide limiter 102, so that the inclined surfaces 1021 of the two guide limiters 102 are arranged obliquely, which is conducive to the inclined surfaces 1021 of the guide limiter 102 guiding the clamping jaws 303 to close.

[0081] Similarly, the inclined surface 3031 of the clamping jaw 303 refers to the surface on the clamping jaw 303 used for sliding cooperation with the guide limiter 102. The inclined surface 3031 of the clamping jaw 303 is also inclined to match the inclined surface 1021 of the guide limiter 102, so that the two can limit the opening angle of the clamping jaw 303 when sliding cooperation.

[0082] By adopting the above technical solution, the clamping jaw 303 is facilitated to switch between the closed state and the open state.

[0083] There are two clamping jaws 303 shown in the figure, but in other embodiments, the number of clamping jaws 303 can be three or four, and the number of torsion springs 304 is consistent with the number of clamping jaws 303.

[0084] By adopting the above technical solution, the increase in the number of the clamping jaws 303 can improve the stability of the clamping tool head assembly 200.

[0085] In one embodiment, the guide limit member 102 is provided with a guide groove 1022, and the mounting seat 302 is provided with a guide protrusion 3022 that slidably cooperates 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 back and forth in the guide groove 1022 along the groove length direction of the guide groove 1022.

[0086] By adopting the above technical solution, the sliding cooperation between the guide groove 1022 and the guide protrusion 3022 allows the connector 301 to slide forward and backward along its own axis, so that the connector 301 has higher stability when sliding. The number of guide protrusions 3022 can be determined according to specific needs. In this embodiment, the number of guide protrusions 3022 is 2 and they are symmetrically distributed on the mounting seat 302. In other embodiments, the number of guide protrusions 3022 is 1 or 3 or more and they are symmetrically distributed around the axis of the mounting seat 302.

[0087] In one embodiment, the center line of the guide protrusion 3022 and the symmetry center line of the clamping jaw 303 are perpendicular to each other.

[0088] By adopting the above technical solution, the guide protrusions 3022 and the clamping claws 303 are evenly arranged along the circumference, which further improves the stability of the connector 301 when sliding.

[0089] In one embodiment, the number of the clamping jaws 303 is two, and the number of the guide protrusions 3022 is two, wherein the two clamping jaws 303 are disposed on a pair of opposite faces of the rectangle, and the two guide protrusions 3022 are disposed on another pair of opposite faces of the rectangle.

[0090] By adopting the above technical solution, the guide protrusion 3022 and the clamping claw 303 are arranged symmetrically with the center of the rectangle, which helps to improve the uniformity of the arrangement of the guide protrusion 3022 and the clamping claw 303, and further helps to improve the stability of the connector 301 when sliding.

[0091] Please refer again Figure 6 In one embodiment, a curved surface 3030 is provided at the center of the bent head of the clamping jaw 303 .

[0092] By adopting the above technical solution, the shape and size of the arc surface 3030 match the shape and size of the flange 204 of the tool head assembly 200, so that the contact area between the clamping jaw 303 and the arc surface 3030 is larger during clamping, thereby improving the firmness of the clamping jaw 303.

[0093] Please refer again Figure 2 and Figure 3 In one embodiment, the ultrasonic surgical handle 100 further includes a driving mechanism 400 for driving the connecting assembly 300 to move forward and backward, and the driving mechanism 400 at least includes:

[0094] A sliding member 401, the sliding member 401 is slidably disposed 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 sliding member 401 to move forward when it is reset;

[0096] A trigger 403, the trigger 403 is rotatably disposed on the handle housing 101;

[0097] The linkage assembly is disposed between the trigger 403 and the sliding member 401 and is used to drive the sliding member 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 connecting component 300 to move forward and backward; in the present 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 connecting component 300 to move forward and backward through a motor.

[0099] In this embodiment, the driving mechanism 400 includes a sliding member 401, a spring 402, a trigger 403 and a linkage assembly.

[0100] See also Figure 3 and Figure 4 , wherein the sliding member 401 can be slidably arranged on the handle housing 101, that is, the sliding member 401 can move along the front-rear direction of the handle housing 101. Since the sliding member 401 is connected to the connector 301, the sliding member 401 can drive the connector 301 to slide back and forth.

[0101] The spring 402 refers to an elastic member used to provide a force to the sliding member 401 ; the spring 402 is connected to the sliding member 401 , and the elastic force of the spring 402 can drive the sliding member 401 to return to its original position and move forward.

[0102] The trigger 403 refers to a component for operation by a doctor; the trigger 403 is rotatably disposed on the handle housing 101, that is, the trigger 403 can rotate relative to the handle housing 101 under the operation of the doctor.

[0103] The linkage assembly is disposed between the trigger 403 and the sliding member 401 and is used to drive the sliding member 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 sliding member 401. When the trigger 403 is rotated under the operation of the doctor, the trigger 403 drives the sliding member 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 solution, the doctor can manually operate the connector 301, that is, the connector 301 can be moved forward and backward.

[0105] In one embodiment, when the trigger 403 is not operated, the front of the clamp 303 is in an open state; when the trigger 403 is operated, the clamp 303 is limited by the guide limiter 102 and gradually becomes closed and moves a certain distance with the connector 301.

[0106] Here, it can be understood that when the trigger 403 is not operated, the elastic force of the spring 402 drives the sliding member 401 to slide forward, and the sliding member 401 drives the connector 301 to slide forward, and the clamping jaw 303 on the connector 301 moves forward, and the guide limiter 102 no longer limits the clamping jaw 303, and the front part of the clamping jaw 303 is gradually in an open state under the action of the torsion spring 304;

[0107] When the trigger 403 is operated, the trigger 403 drives the sliding member 401 to slide backward through the linkage assembly, the sliding member 401 drives the connector 301 to slide backward, the clamping jaw 303 on the connector 301 moves backward, and the guide limit member 102 limits the clamping jaw 303 so that the clamping jaw 303 is in a closed state. At the same time, the clamping jaw 303 can move a certain distance synchronously with the connector 301.

[0108] By adopting the above technical solution, the doctor can manually operate the driving mechanism 400, thereby improving the flexibility of operation.

[0109] In one embodiment, when the trigger 403 is released after being operated, the front portion of the jaw 303 automatically returns to the open state from the closed state.

[0110] Here, it can be understood that a torsion spring 304 is provided between the clamp 303 and the connector 301. When the trigger 403 is released after operation, the spring 402 drives the sliding member 401 to slide forward, and then drives the connector 301 to slide forward. The guide limit member 102 no longer limits the clamp 303, and the clamp 303 automatically returns to the open state under the elastic force of the torsion 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, which further saves the doctor's manual operation steps and improves the operation efficiency.

[0112] See also Figure 4 In one embodiment, the sliding member 401 has a sleeve portion 405 slidably mounted on the connector 301 , a fastener 306 is disposed at the rear of the connector 301 , and a wave spring 406 is further disposed between the fastener 306 and the sleeve portion 405 .

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

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

[0115] Specifically, the sleeve portion 405 has a flange 4011 with an inner hole and a round tube 4012 extending from the outer diameter of the flange 4011 along the axis of the connector 301 . The flange 4011 can be fixed on the sleeve 3011 of the connector 301 , and the round tube 4012 can partially or completely cover one or more wave springs 406 .

[0116] Please refer again Figure 2 In one embodiment, an electrical socket 104 is disposed at the bottom of the grip portion of the handle housing 101 .

[0117] Here, it can be understood that the electrical socket 104 refers to a component used to electrically connect to the transducer 301 to enable the transducer 301 to be electrically connected.

[0118] By adopting the above technical solution, ultrasonic surgical instruments can be easily plugged in for use.

[0119] Please also read Figures 10 to 12 In one embodiment, the cutter head assembly 200 also includes a dial button 205 fixed outside the outer tube 203 and used to drive the cutter head assembly 200 to rotate around its own axis. The rear part of the dial button 205 is a circular sleeve 206. The cutter head assembly 200 penetrates the cutter rod 201, the inner tube 202, the outer tube 203 and the circular sleeve 206 of the dial button 205 through a limit pin and connects the four together.

[0120] Here, it can be understood that the dial button 205 is for the doctor to turn and rotate, and the circular sleeve 206 is used to be fixed on the handle housing 101. Optionally, the circular sleeve 206 can be threadedly connected to the handle housing 101. Rotating the dial button 205 allows the circular sleeve 206 to be threadedly connected to the handle housing 101.

[0121] By adopting the above technical solution, the disassembly and assembly method of the cutter head assembly 200 is simplified.

[0122] In one embodiment, the flange 204 is integrally provided with the inner tube body 2021 .

[0123] By adopting the above technical solution, the flange 204 and the inner tube body 2021 can be formed in one piece, thereby improving the degree of integration.

[0124] In one embodiment, the flange 204 extends rearwardly behind the outer tube 203 .

[0125] By adopting the above technical solution, the flange 204 and the connecting assembly 300 are facilitated to cooperate with each other.

[0126] In one embodiment, the rear portion of the knife rod 201 always extends behind the inner tube 202 and the outer tube 203, and the rear portion of the knife rod 201 can be connected to the amplitude rod shaft in the transducer 301 assembly by threaded connection.

[0127] The knife rod 201 can be axially relatively slidably inserted into the channel, and the rear end of the knife rod 201 is fixedly connected to the amplitude rod shaft of the transducer 103. The transducer 103 can be fully or partially accommodated in the cavity by the ultrasonic surgical handle 100.

[0128] By adopting the above technical solution, the arrangement of the knife rod 201 and the transducer 103 is reasonable, which reduces the space occupied by the cavity.

[0129] In one embodiment, the cutter head assembly 200 further includes a holder 207 at the front, the holder 207 is rotatably disposed between the front of the inner tube 202 and the front of the outer tube 203, the cutter bar 201 has a cutter bar head 2011 at the front, and when the inner tube 202 moves forward and backward relative to the outer tube 203, the holder 207 opens or closes relative to the cutter bar head 2011. The clamp 303 drives the flange 204 fixed on the inner tube 202 to move to realize the opening and closing of the holder 207 of the cutter head assembly 200. Because the clamp 303 is synchronously linked with the trigger 403, the operation of the trigger 403 can realize the opening and closing of the holder 207 of the cutter head assembly 200.

[0130] By adopting the above technical solution, the clamping action of the cutter head assembly 200 can be achieved.

[0131] In one embodiment, the axial lines of the knife rod 201, the inner tube 202, and the outer tube 203 are arranged to extend colinearly, the knife rod 201 can be relatively slidably inserted into the inner tube 202 along the front-to-back direction, the outer tube 203 can be relatively slidably sleeved outside the inner tube 202, and a limit pin 208 is provided between the knife rod 201 and the outer tube 203 to keep the knife rod 201 and the outer tube 203 relatively fixed, and a waist-shaped groove 20211 extending along the front-to-back direction is opened on the inner tube body 2021, and the limit pin 208 is slidably inserted into the waist-shaped groove 20211.

[0132] By adopting the above technical solution, the cutter rod 201, the inner tube 202 and the outer tube 203 of the cutter head assembly 200 are fixed.

[0133] In one embodiment, the knife rod 201 can be relatively slidably inserted into the channel along the axial direction, and the rear end of the knife rod 201 is fixedly connected to the horn shaft of the transducer 103. The transducer 103 can be completely accommodated in the cavity by the ultrasonic surgical handle 100, forming a part of the ultrasonic surgical handle 100. The transducer 103 can be partially accommodated in the cavity, and can be replaced when the transducer 103 is broken.

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

[0135] In a second aspect, an ultrasonic surgical system is provided, comprising an ultrasonic surgical instrument as described above, a transducer 103 electrically connected to the ultrasonic surgical instrument, and a power adapter for supplying energy to the ultrasonic surgical instrument and the transducer 103, wherein the plug of the power adapter is connected through an electrical socket 104 at the bottom of the ultrasonic scalpel handle.

[0136] By adopting the above technical solution, on the basis of having the advantages of the ultrasonic surgical instrument of the above embodiment, the ultrasonic housing system of this embodiment can be connected to the mains through a power adapter, without worrying about the battery life, and is convenient to use.

[0137] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An ultrasonic surgical instrument, characterized in that: include: An ultrasonic surgical handle and a cutter head assembly detachably connected to the ultrasonic surgical handle, wherein the ultrasonic surgical handle comprises a handle shell having a cavity, and the ultrasonic surgical handle comprises a connecting assembly disposed in the cavity and connected to the cutter head assembly; The connecting assembly comprises: a connector, the connector having a channel running through from front to back, and a mounting seat being provided at the front of the connector; a clamping jaw, the clamping jaw being pivotally connected to the side of the mounting seat through a lug on the side of the mounting seat, the length of the front of the clamping jaw being greater than the length of the mounting seat, and the clamping jaw having a bent head; the ultrasonic surgical handle further comprises a guide stopper, the guide stopper being fixed to the handle housing, wherein the connector can slide forward and backward relative to the guide stopper, and the clamping jaw pivots while the connector slides forward and backward, so that the front of the clamping jaw is in an open state and released outside the guide stopper, or in a closed state and received in the guide stopper and moves a certain distance with the connector; The knife head assembly includes: a knife rod extending in the front-to-back 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 be synchronously moved back and forth relative to the inner tube. The inner tube includes an inner tube body and a flange protruding from the rear end of the inner tube body. The flange includes two annular flanges and an annular groove between the two flanges. The outer diameter of the flange at the front of the flange is larger than the flange at the rear of the flange. The annular groove is used to accommodate the head of the clamping jaw of the ultrasonic surgical handle and facilitate the removal of the head of the clamping jaw.

2. The ultrasonic surgical instrument according to claim 1, wherein: The ultrasonic surgical handle also includes a torsion spring arranged between the mounting seat and the clamping jaw, wherein the rear portion of the clamping jaw has two protruding legs connected to the mounting seat, the torsion spring is sleeved on a pin that penetrates and connects the two legs, one torsion arm of the torsion spring elastically abuts against the mounting seat, and the other torsion arm of the torsion spring elastically abuts against the clamping jaw.

3. The ultrasonic surgical instrument according to claim 1, wherein: The guide limit member is provided with an inclined surface which corresponds to and slides with the clamping jaw, and the inclined surface gradually inclines toward the direction approaching the cutter head assembly along the installation direction of the cutter head assembly; and / or the clamping jaw is also provided with an inclined surface, and the inclined surface of the clamping jaw is arranged opposite to the inclined surface of the guide limit member and can limit the opening angle of the clamping jaw together with the inclined surface of the guide limit member when the clamping jaw is released.

4. The ultrasonic surgical instrument according to claim 1, wherein: The guide limiter is provided with a guide groove, the mounting seat is provided with a guide protrusion slidably matched with the guide groove, the groove length direction of the guide groove is parallel to the axis of the connector, and the guide protrusion can slide back and forth in the guide groove along the groove length direction of the guide groove.

5. The ultrasonic surgical instrument according to any one of claims 1 to 4, characterized in that: The ultrasonic surgical handle further comprises a driving mechanism for driving the connecting assembly to move forward and backward, and the driving mechanism at least comprises: A sliding member, the sliding member is slidably disposed on the handle housing, and the sliding member is connected to the connector; A spring, providing a force required for the sliding member to move forward when resetting; a trigger, the trigger being rotatably disposed on the handle housing; The linkage assembly is arranged between the trigger and the sliding member and is used to drive the sliding member to slide forward and backward when the trigger is operated.

6. The ultrasonic surgical instrument according to claim 5, characterized in that: When the trigger is not operated, the front part of the clamp is in an open state; when the trigger is operated, the clamp is in a closed state and moves a certain distance with the connector.

7. The ultrasonic surgical instrument according to claim 6, characterized in that: When the trigger is released after being operated, the front portion of the clamping jaw automatically returns to the open state from the closed state.

8. The ultrasonic surgical instrument according to claim 1, wherein: The cutter head assembly also includes a dial button fixed outside the outer tube and used to drive the cutter head assembly to rotate around its own axis. The rear part of the dial button is a circular sleeve. The cutter head assembly penetrates the cutter rod, the inner tube, the outer tube and the circular sleeve of the dial button through a limit pin and connects the four together.

9. The ultrasonic surgical instrument according to claim 1 or 8, characterized in that: The knife rod can be relatively slidably arranged in the channel along the axial direction, the rear end of the knife rod is fixedly connected to the amplitude rod shaft of the transducer, and the transducer can be fully or partially accommodated in the cavity by the ultrasonic surgical handle.

10. An ultrasonic surgical system, characterized in that: The ultrasonic surgical instrument comprises the ultrasonic surgical instrument as claimed in any one of claims 1 to 9, a transducer electrically connected to the ultrasonic surgical instrument, and a power adapter for supplying energy to the ultrasonic surgical instrument and the transducer, wherein the plug of the power adapter is connected through the electrical socket at the bottom of the ultrasonic surgical handle.

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