Ultrasonic surgical instrument and ultrasonic surgical system

Abstract

The application provides an ultrasonic surgical instrument and an ultrasonic surgical system, which comprise an ultrasonic surgical handle and a blade head 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 blade head assembly; the connecting assembly comprises a connector having a channel penetrating through front and back, and a clamping jaw pivotally connected to the side surface of the mounting seat; the ultrasonic surgical handle further comprises a guide limiting piece, wherein the connector can slide forward and backward relative to the guide limiting piece, and the clamping jaw is pivoted while 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 along with the connector; the connecting assembly improves the convenience of disassembling and assembling the blade head assembly and the stability during connection, and the ultrasonic surgical handle is not easy to shake during operation and is more accurate to operate.

Description

TECHNICAL FIELD

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

[0002] With the development of minimally invasive surgery, surgical instruments for minimally invasive surgery have been greatly developed. Ultrasonic surgical instruments have excellent cutting and coagulation functions, and compared with electrocoagulation surgical instruments such as bipolar and monopolar electrocoagulation forceps, they have the advantages of less thermal damage and less smoke, and have almost become the standard for every minimally invasive surgical operation.

[0003] Current ultrasonic surgical instruments used in clinical applications mostly adopt integrated structure design, and the ultrasonic handle and the ultrasonic blade are permanently assembled to form an inseparable integral structure. Such integrated instruments have two major defects: first, the ultrasonic handle and consumable components (such as the working blade) are physically fixed, which makes it impossible to realize modular replacement and significantly reduces the reuse rate; second, the high-temperature and high-pressure sterilization process after the operation needs to use the entire instrument as a sterilization unit, which not only significantly increases the consumable procurement cost of medical institutions, but also causes serious resource waste due to the disposal of the entire instrument. SUMMARY

[0004] The purpose of the present application is to provide an ultrasonic surgical instrument and an ultrasonic surgical system to solve the technical problem of high integration of ultrasonic surgical instruments at the time of factory delivery, which reduces the reuse rate of some structures and causes resource waste.

[0005] To achieve the above purpose, the technical solution adopted by the present application is:

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

[0007] An ultrasonic surgical handle and a blade assembly detachably connected to the ultrasonic surgical handle, the ultrasonic surgical handle comprising a handle shell, the handle shell having a cavity, the ultrasonic surgical handle comprising a connecting assembly disposed in the cavity and connected to the blade assembly;

[0008] The connecting assembly comprises a connector having a channel extending through front and back, a front part of the connector having a mounting seat, a clamping jaw being pivotably connected to a side of the mounting seat through a lug on the side of the mounting seat, a front part of the clamping jaw having a length greater than that of the mounting seat, the clamping jaw having a bent head, the ultrasonic surgical handle further comprising a guide limiting member fixed to the handle shell, wherein the connector is capable of sliding forward and backward relative to the guide limiting member, and the clamping jaw is pivoted while 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 member or in a closed state and accommodated in the guide limiting member and moves a certain distance with the connector.

[0009] The knife head assembly comprises a knife rod extending in a front and 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 are capable of moving forward and backward relative to the inner tube synchronously, the inner tube comprises an inner tube body and a flange protruding from a rear end of the inner tube body, the flange comprises two flanges and an annular groove between the two flanges, an outer diameter of the flange at a front part of the flange is greater than that of the flange at a rear part of the flange, and the annular groove is used for accommodating the head of the clamping jaw of the ultrasonic surgical handle and facilitating removal of the head of the clamping jaw.

[0010] By adopting the above technical scheme, the connecting assembly can be detachably connected with the knife head assembly, the connector of the connecting assembly is moved forward to release the knife head assembly, the knife head assembly is detached, the connector is moved backward to clamp and fix the knife head assembly, so that the convenience degree of disassembly of the knife head assembly is greatly improved; in addition, the clamping jaw of the connecting assembly fixes the knife head assembly by clamping, so that the knife head assembly is not easy to fall off, and the firmness of the knife head assembly when being fixed is improved.

[0011] In one embodiment, the ultrasonic surgical handle further comprises a torsion spring arranged between the mounting seat and the clamping jaw, wherein a rear part of the clamping jaw has two extended legs connected to the mounting seat, the torsion spring is sleeved on a pin penetrating through the two legs, one torsional arm of the torsion spring elastically abuts against the mounting seat, and the other torsional arm of the torsion spring elastically abuts against the clamping jaw.

[0012] In one embodiment, the guide limiting member is provided with a slope corresponding to the sliding cooperation of the clamping jaw, the slope gradually inclines towards the direction close to the knife head assembly along the mounting direction of the knife 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 member and capable of limiting the opening angle of the clamping jaw together with the slope of the guide limiting member in the released state of the clamping jaw.

[0013] In one embodiment, the guiding limiting member is provided with a guiding groove, and the mounting base is provided with a guiding protrusion which is in sliding cooperation with the guiding groove, the groove length direction of the guiding groove is parallel to the axial line of the connector, and the guiding protrusion can slide back and forth along the groove length direction of the guiding groove.

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

[0015] a sliding member which is slidingly arranged on the handle shell and connected to the connector;

[0016] a spring which provides the required force for the forward movement of the sliding member when the sliding member is reset;

[0017] a trigger which is rotationally arranged on the handle shell;

[0018] a linkage assembly which is arranged between the trigger and the sliding member and used for driving the sliding member to slide back and forth when the trigger is operated.

[0019] In one embodiment, in the unoperated state of the trigger, the front part of the clamping jaw is in the open state; in the operated state of the trigger, the clamping jaw is in the closed state and moves a certain distance with the connector.

[0020] In one embodiment, when the trigger is released after operation, the front part of the clamping jaw automatically recovers from the closed state to the open state.

[0021] In one embodiment, the tool head assembly further comprises a knob which is fixed outside the outer tube and used for driving the tool head assembly to rotate around its own axis, the rear part of the knob is a circular sleeve, and the tool head assembly is connected together with the knife rod, the inner tube, the outer tube and the circular sleeve of the knob through a limiting pin.

[0022] In one embodiment, the knife rod is arranged in the channel in relative sliding along the axial direction, the rear end of the knife rod is fixedly connected with the amplitude rod shaft of the transducer, and the transducer can be wholly or partially accommodated in the cavity by the ultrasonic surgical handle.

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

[0024] By adopting the technical scheme, on the basis of the advantages of the ultrasonic surgical instrument in the above embodiment, the ultrasonic surgical instrument system can be connected with the commercial power supply through the power adapter, without worrying about the endurance time, and is convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used 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.

[0026] Figure 1 is a perspective view of the ultrasonic surgical instrument provided by the embodiment of the present application.

[0027] Figure 2 is a perspective view of the ultrasonic surgical instrument provided by the embodiment of the present application, in which a part of the handle shell is hidden.

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

[0029] Figure 4 is an exploded view of the connecting assembly, the sliding piece and the guide limiting piece provided by the embodiment of the present application.

[0030] Figure 5 is a perspective view of the connector provided by the embodiment of the present application.

[0031] Figure 6 is a perspective view of the clamping jaw provided by the embodiment of the present application.

[0032] Figure 7 is a perspective view of the torsional spring provided by the embodiment of the present application.

[0033] Figure 8 is a perspective view of the guide limiting piece provided by the embodiment of the present application.

[0034] Figure 9 is a perspective view of the knife head assembly provided by the embodiment of the present application.

[0035] Figure 10 is an exploded view of the knife head assembly provided by the embodiment of the present application.

[0036] Figure 11 is a top view of the knife head assembly provided by the embodiment of the present application.

[0037] Figure 12 is a perspective view of the knife head assembly provided by the embodiment of the present application, in which the knife head assembly is configured with a knob.

[0038] The same reference numbers in different drawings denote the same or similar elements.

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

[0040] 101, handle shell; 102, guide limiting piece; 103, transducer; 104, electrical socket;

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

[0042] 201, blade rod; 202, inner tube; 203, outer tube; 204, flange; 205, knob; 206, circular sleeve; 207, clamp; 208, limiting pin;

[0043] 2011, blade rod head; 2041, flange; 2042, annular groove; 2021, inner tube body; 20211, waist-shaped groove;

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

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

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

[0047] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects clearer, 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 do not limit the present application.

[0048] It should be noted that when an element is referred to as being "fixed to" or "disposed 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.

[0049] It should be understood that, in order to facilitate the description of the relative position relationship of each part in the ultrasonic surgical instrument, the above and below descriptions about the front-rear direction are all defined with reference to the direction observed by the operator when holding the ultrasonic surgical knife to operate, wherein the position of the ultrasonic surgical instrument acting on the surgical site is in front, and the position of the ultrasonic surgical instrument close to the human body is in back.

[0050] In addition, the terms "first", "second", etc. are used only for the purpose of description and should not be construed as indicating relative importance or indicating the number of technical features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified. The specific implementation of the present application is described in more detail below in combination with specific embodiments:

[0051] As shown in Figures 1 to 3 , the ultrasonic surgical instrument provided by the embodiment of the present application comprises:

[0052] The ultrasonic surgical handle 100 and the blade head assembly 200 detachably connected with the ultrasonic surgical handle 100, the ultrasonic surgical handle 100 comprises a handle housing 101, the handle housing 101 has a cavity, the ultrasonic surgical handle 101 comprises a connecting assembly 300 arranged in the cavity and connected with the blade head assembly 200;

[0053] Please refer to Figure 4 and Figure 5 , the connecting assembly 300 comprises a connector 301, the connector 301 has a through channel extending from front to back, the front part of the connector 301 has a mounting seat 302, the mounting seat 302 can be roughly rectangular or circular in shape, etc.

[0054] Please refer to Figure 6 and Figure 7 , a clamping jaw 303, the clamping jaw 303 is pivotally connected to the side of the mounting seat 302 through the 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.

[0055] Please refer to Figure 8 , the ultrasonic surgical handle 100 further comprises a guide limiting piece 102 fixed on the handle housing 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;

[0056] Please refer to Figures 9 to 10 , the blade head assembly 200 comprises a blade rod 201 extending in the front-back direction, an inner tube 202 sleeved outside the blade rod 201, and an outer tube 203 sleeved outside the inner tube 202.

[0057] The knife rod 201 is fixed with the outer tube 203 and can move 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 between the two flanges 2041, the outer diameter of the flange 2041 at the front of the flange 204 is larger than that of the flange 2041 at the rear of the flange 204, and the annular groove 2042 is used to accommodate the head of the jaw 303 of the ultrasonic surgical handle 100 and facilitate the removal of the head of the jaw 303.

[0058] Specifically, the ultrasonic surgical handle 101 refers to a component for the doctor to hold, and the ultrasonic surgical handle 101 is used to connect the knife head assembly 200, so that the doctor can control the knife head assembly 200 to cut and coagulate blood through the ultrasonic surgical handle 101;

[0059] The ultrasonic surgical handle 101 comprises a handle shell 101, which is a shell part for the doctor to hold; 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 connected with the knife head assembly 200;

[0060] The connecting assembly 300 refers to an assembly for detachable connection with the knife head assembly 200; the connecting assembly 300 comprises a connector 301 and a jaw 303, wherein the connector 301 has a channel which penetrates through the connector 301 along the front-rear 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 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 knife head assembly 200.

[0062] It can be understood that the shape of the mounting seat 302 includes but is not limited to a generally rectangular or circular shape, and the mounting seat 302 is used for sliding fit 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 fitted with each other.

[0063] The side surface of the mounting seat 302 is provided with a lug 3021, and the jaw 303 is pivotably connected with the side surface of the mounting seat 302 through the lug 3021, that is, the jaw 303 is connected with the mounting seat 302 through a shaft, and the jaw 303 can rotate around the shaft relative to the mounting seat 302; the length of the front part of the jaw 303 is greater than the length of the mounting seat 302, so that the front part of the jaw 303 can be exposed outside the mounting seat 302, which is beneficial to the jaw 303 to clamp the knife head assembly 200;

[0064] The guide limiting member 102 is used to guide the sliding direction of the connector 301 and limit the position of the clamping jaw 303 so that the clamping jaw 303 performs a releasing action or a receiving action, and is fixed on the handle shell 101.

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

[0066] The knife head assembly 200 is used to realize a surgical action such as cutting and suturing, and includes a knife rod 201, an inner tube 202, and an outer tube 203.

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

[0068] The inner tube 202 includes an inner tube tube body 2021 and a flange 204, wherein the flange 204 is located at the rear end of the inner tube tube body 2021 and is formed by protruding from the outer tube wall of the inner tube 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 at intervals, the annular groove 2042 is formed between the two flanges 2041, and the outer diameter of the flange 2041 at the front part of the flange 204 is greater than the outer diameter of the flange 2041 at the rear part of the flange 204, so that the clamping jaw 303 clamps the flange 204 from the rear to the front, thereby realizing that the clamping jaw 303 is accommodated in the annular groove 2042.

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

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

[0072] The tool 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 out of the guide limiting piece 102, the clamping jaw 303 releases the flange piece 204 of the tool head assembly 200, and the two can be separated.

[0073] 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, in this way, the flange piece 204 of the tool 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 tool 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 tool head assembly 200.

[0074] By adopting the above technical scheme, the connecting assembly 300 can realize detachable connection with the tool head assembly 200, the connector 301 of the connecting assembly 300 moves forward to release the tool head assembly 200, so as to realize disassembly of the tool head assembly 200, the connector 301 moves backward to clamp and fix the tool head assembly 200, in this way, the convenience degree of disassembly of the tool head assembly 200 is greatly improved; in addition, the clamping jaw 303 of the connecting assembly 300 fixes the tool head assembly 200 through clamping, so that the tool head assembly 200 is not easy to fall off, and the firmness of the tool head assembly 200 when being fixed is improved.

[0075] In addition, the connecting assembly 300 in the ultrasonic surgical handle 100 realizes stable and reliable connection between the tool head assembly 200 and the ultrasonic surgical handle 100, which makes the installation of the tool head assembly 200 convenient and simple to operate, and the tool does not shake during the operation process, and the operation is more accurate.

[0076] Please refer to Figure 3 , Figure 4 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 legs 305 connected with the mounting seat 302, the torsion spring 304 is sleeved on a pin 307 penetrating through 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 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; 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 supporting leg 305 that extends out and is connected to the mounting seat 302, a pin 307 is connected between the two supporting legs 305, the torsion spring 304 is sleeved on the pin 307, and the torsion spring 304 has two torsion arms 3041, one of which elastically abuts against the mounting seat 302, and the other elastically abuts 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 guiding and 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.

[0078] By adopting the above technical solution, 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.

[0079] Please refer to Figure 4 , Figure 6 and Figure 8 , in an embodiment, the guiding and 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 guiding and limiting member 102 and can limit the opening angle of the clamping jaw 303 together with the slope 1021 of the guiding and limiting member 102 in the state that the clamping jaw 303 is released.

[0080] Here, it can be understood that the slope 1021 of the guiding and limiting member 102 is a surface of the guiding and limiting member 102 for slidingly cooperating with the clamping jaw 303, and the number of the slope 1021 of the guiding and 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 guiding and limiting member 102 is also two, the two slopes 1021 of the guiding and limiting member 102 are oppositely arranged, and the distance between the two slopes 1021 of the guiding and limiting member 102 gradually decreases from the front part of the guiding and limiting member 102 to the rear part of the guiding and limiting member 102, so that the two slopes 1021 of the guiding and limiting member 102 are inclined to be arranged, which is beneficial to guiding the clamping jaw 303 to close by the slope 1021 of the guiding and limiting member 102.

[0081] 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 piece 102, and the inclined surface 3031 of the clamping jaw 303 is also inclinedly matched with the inclined surface 1021 of the guide limiting piece 102, so that the opening angle of the clamping jaw 303 can be limited when the two are slidingly fitted.

[0082] By adopting the above technical scheme, the clamping jaw 303 can be switched between the closed state and the open state.

[0083] 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.

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

[0085] In an embodiment, the guide limiting piece 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.

[0086] By adopting the above technical scheme, the sliding fit of the guide groove 1022 and the guide protrusion 3022 enables the connector 301 to 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.

[0087] In an embodiment, the center line of the guide protrusion 3022 is perpendicular to the center line of symmetry of the clamping jaw 303.

[0088] By adopting the above technical scheme, the guide protrusion 3022 and the clamping jaw 303 are uniformly arranged along the circumference, further improving the stability of the connector 301 when sliding.

[0089] In an embodiment, the number of clamping jaws 303 is 2, and the number of guide protrusions 3022 is 2, wherein the two clamping jaws 303 are arranged on a pair of opposite faces of the rectangle, and the two guide protrusions 3022 are arranged on another pair of opposite faces of the rectangle.

[0090] By adopting the above technical solutions, the guide protrusions 3022 and the clamping jaws 303 are arranged in a rectangular central symmetry, which facilitates improving the uniformity of arrangement of the guide protrusions 3022 and the clamping jaws 303, and in turn facilitates improving the stability of the connector 301 when sliding.

[0091] Please refer again to Figure 6 In an embodiment, an arc surface 3030 is arranged at the center of the bent head of the clamping jaw 303.

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

[0093] Please refer again to Figure 2 and Figure 3 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] a sliding piece 401, which is slidingly arranged on the handle housing 101 and connected to the connector 301;

[0095] a spring 402, which provides the required force for the forward movement of the sliding piece 401 when resetting;

[0096] a trigger 403, which is rotatably arranged on the handle housing 101;

[0097] a linkage assembly, which is arranged between the trigger 403 and the sliding piece 401 and used for driving the sliding piece 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; 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 connection assembly 300 to move forward and backward by a motor.

[0099] In the present embodiment, the driving mechanism 400 comprises the sliding piece 401, the spring 402, the trigger 403 and the linkage assembly.

[0100] Please refer to Figure 3 and Figure 4 Wherein, the sliding piece 401 can be slidingly arranged on the handle housing 101, i.e. the sliding piece 401 can move in the forward and backward direction of the handle housing 101, and since the sliding piece 401 is connected to the connector 301, the sliding piece 401 can drive the connector 301 to slide forward and backward.

[0101] The spring 402 refers to an elastic member for providing an acting force of the slider 401; the spring 402 is connected with the slider 401, and the elastic force of the spring 402 can drive the slider 401 to return to forward movement.

[0102] The trigger 403 refers to a member for being operated by a doctor; the trigger 403 is rotationally arranged 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 arranged between the trigger 403 and the slider 401 and is used for driving 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, and in turn drives 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 forward and backward movement of the connector 301.

[0105] In an embodiment, in a non-operated state of the trigger 403, the front part of the clamping jaw 303 is in an open state; in an operated state of the trigger 403, the clamping jaw 303 is limited by the guide limiting member 102 and gradually in a closed state and moves a certain distance along with the connector 301.

[0106] Here, it can be understood that, in a non-operated 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 member 102 no longer limits the clamping jaw 303, and the front part of the clamping jaw 303 gradually is in an open state under the action of the torsional spring 304;

[0107] In an 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 member 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 doctor can manually operate the driving mechanism 400, and the flexibility of operation is improved.

[0109] In an embodiment, when the trigger 403 is released after being operated, 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 torsion 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 torsion spring 304.

[0111] By adopting the above technical scheme, 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 doctor, and improving the operation efficiency.

[0112] Please refer to Figure 4 In an embodiment, the slider 401 has a sleeve portion 405 sleeved on the connector 301 in a sliding manner, the rear portion of the connector 301 is provided with a fastener 306, and the fastener 306 and the sleeve portion 405 are further provided with a wave spring 406 therebetween.

[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 scheme, 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 circular tube 4012 extending along the axis of the connector 301 from the outer diameter of the flange 4011, the flange 4011 can be fixed on the sleeve 3011 of the connector 301, and the circular tube 4012 can partially or entirely cover one or more wave springs 406.

[0116] Please refer to Figure 2 In an embodiment, the bottom of the grip portion of the handle shell 101 is provided with an electrical socket 104.

[0117] Here, it can be understood that the electrical socket 104 refers to a component for electrically connecting with the transducer 301, realizing the power connection of the transducer 301.

[0118] By adopting the above technical scheme, the ultrasonic surgical instrument is convenient to use by plugging in power.

[0119] Please refer to Figures 10 to 12 In an embodiment, the blade head assembly 200 further comprises a knob 205 fixed outside the outer tube 203 and used to drive the blade head assembly 200 to rotate around the axis thereof, the rear portion of the knob 205 is a circular sleeve 206, and the blade head assembly 200 is connected together by a limiting pin penetrating through the blade rod 201, the inner tube 202, the outer tube 203 and the circular sleeve 206 of the knob 205.

[0120] Here, it can be understood that the knob 205 is provided for the doctor to rotate, the circular sleeve 206 is used to be fixed on the handle shell 101, and the circular sleeve 206 can be threadedly connected with the handle shell 101, and the rotation of the knob 205 enables the circular sleeve 206 to be threadedly connected with the handle shell 101.

[0121] By adopting the technical scheme, the disassembly and assembly of the tool head assembly 200 are simplified.

[0122] In an embodiment, the flange 204 is integrally arranged with the inner tube 2021.

[0123] By adopting the technical scheme, the flange 204 and the inner tube 2021 can be integrally formed, and the integration degree is improved.

[0124] In an embodiment, the flange 204 extends rearward beyond the rear of the outer tube 203.

[0125] By adopting the technical scheme, the flange 204 is beneficial to cooperate with the connecting assembly 300.

[0126] In an embodiment, the rear of the tool rod 201 always extends rearward beyond the inner tube 202 and the outer tube 203, and the rear of the tool rod 201 is threadedly connected with the amplitude rod shaft of the transducer 301.

[0127] The tool rod 201 is axially slidably arranged in the channel, the rear end of the tool rod 201 is fixedly connected with 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.

[0128] By adopting the technical scheme, the arrangement of the tool rod 201 and the transducer 103 is reasonable, and the space occupied by the cavity is reduced.

[0129] In an embodiment, the tool head assembly 200 further comprises a gripper 207 located at the front, the gripper 207 is rotatably arranged between the front of the inner tube 202 and the front of the outer tube 203, the tool rod 201 has a tool rod head 2011 located at the front, and the relative movement of the inner tube 202 and the outer tube 203 enables the gripper 207 to open or close relative to the tool rod head 2011. The gripper 207 of the tool head assembly 200 is opened and closed by moving the flange 204 fixed on the inner tube 202 by the gripper claw 303. Because the gripper claw 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 tool head assembly 200.

[0130] By adopting the technical scheme, the clamping action of the tool head assembly 200 can be realized.

[0131] In one embodiment, the three axial lines of the knife rod 201, the inner tube 202 and the outer tube 203 are arranged in line, the knife rod 201 is arranged in the inner tube 202 in a relative sliding manner along the front-back direction, the outer tube 203 is arranged outside the inner tube 202 in a relative sliding manner, a limiting pin 208 is arranged between the knife rod 201 and the outer tube 203 to keep the relative position of the knife rod 201 and the outer tube 203 fixed, and a waist-shaped slot 20211 extending along the front-back direction is arranged on the inner tube 2021, and the limiting pin 208 is arranged in the waist-shaped slot 20211 in a sliding fitting manner.

[0132] By adopting the above technical scheme, the fixing of the knife rod 201, the inner tube 202 and the outer tube 203 of the tool head assembly 200 is realized.

[0133] In one embodiment, the knife rod 201 is arranged in the channel in a relative sliding manner along the axial direction, and the rear end of the knife rod 201 is fixedly connected with the amplitude rod shaft of the transducer 103. The transducer 103 can be wholly accommodated in the cavity by 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 can be replaced when the transducer 103 is broken.

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

[0135] In a second aspect, an ultrasonic surgical system is provided, which comprises the ultrasonic surgical instrument as described above, a transducer 103 electrically connected with the ultrasonic surgical instrument, and a power adapter for supplying power to the ultrasonic surgical instrument and the transducer 103, wherein the plug of the power adapter is connected through the electric socket 104 of the lower part of the ultrasonic surgical handle.

[0136] By adopting the above technical scheme, on the basis of the advantages of the ultrasonic surgical instrument with the above embodiment, the ultrasonic surgical system of the present embodiment can be connected with the mains through the power adapter, and there is no need to worry about the endurance time, and the use is convenient.

[0137] The above only describes the preferred embodiments of the present application and should not be used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An ultrasonic surgical instrument, characterized in that, include: An ultrasonic surgical handle and a blade assembly detachably connected to the ultrasonic surgical handle, the ultrasonic surgical handle including a handle housing having a cavity, the ultrasonic surgical handle including a connecting assembly disposed within the cavity and connected to the blade assembly; The connecting assembly includes: a connector having a through-channel extending from front to back, and a mounting base at the front of the connector; a gripper pivotally connected to the side of the mounting base via lugs on the side of the mounting base, the length of the front of the gripper being greater than the length of the mounting base, and the gripper having a bent head; the ultrasonic surgical handle further includes a guide limiting member fixed to the handle housing, wherein the connector is capable of sliding back and forth relative to the guide limiting member, and while the connector slides back and forth, the gripper pivots, such that the front of the gripper is either in an open state and released outside the guide limiting member or in a closed state and housed within the guide limiting member and moves a certain distance with the connector; The blade assembly includes: a blade extending in a front-to-back direction, an inner tube sleeved outside the blade, and an outer tube sleeved outside the inner tube. The blade and the outer tube are fixed to each other and are arranged to move back and forth synchronously 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 located between the two flanges. The outer diameter of the flange at the front of the flange is larger than that of the flange at the rear of the flange. The annular groove is used to accommodate the head of the gripper of the ultrasonic surgical handle and facilitates the removal of the head of the gripper. The guide limiting member is provided with an inclined surface that slides in accordance with the gripper, and the inclined surface gradually slopes towards the gripper along the installation direction of the cutter head assembly; and / or the gripper is also provided with an inclined surface, the inclined surface of the gripper is arranged opposite to the inclined surface of the guide limiting member and can limit the opening angle of the gripper together with the inclined surface of the guide limiting member when the gripper is released.

2. The ultrasonic surgical instrument as described in claim 1, characterized in that, The ultrasonic surgical handle also includes a torsion spring disposed between the mounting base and the gripper, wherein the rear part of the gripper has two protruding legs connected to the mounting base, 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 base, and the other torsion arm of the torsion spring elastically abuts against the gripper.

3. The ultrasonic surgical instrument as described in claim 1, characterized in that, The guide limiting member is provided with a guide groove, and the mounting base is provided with a guide protrusion that slides with the guide groove. The length direction of the guide groove is parallel to the axis of the connector, and the guide protrusion can slide back and forth within the guide groove along the length direction of the guide groove.

4. The ultrasonic surgical instrument as described in any one of claims 1-3, characterized in that, The ultrasonic surgical handpiece further includes a drive mechanism for moving the connecting assembly back and forth, the drive mechanism comprising at least: A slider is slidably disposed on the handle housing and connected to the connector; A spring provides the force required for the slider to move forward when it returns to its original position. A trigger, which is rotatably mounted on the handle housing; A linkage component is disposed between the trigger and the slider and is used to drive the slider to slide back and forth when the trigger is operated.

5. The ultrasonic surgical instrument as described in claim 4, characterized in that, When the trigger is not activated, the front of the gripper is in an open state; when the trigger is activated, the gripper is in a closed state and moves a certain distance with the connector.

6. The ultrasonic surgical instrument as described in claim 5, characterized in that, When the trigger is released after operation, the front part of the gripper automatically returns from the closed state to the open state.

7. The ultrasonic surgical instrument as described in claim 1, characterized in that, The cutter head assembly also includes a knob fixed outside the outer tube for driving the cutter head assembly to rotate around its own axis. The rear of the knob is a circular sleeve. The cutter head assembly is connected together by a limiting pin passing through the cutter bar, the inner tube, the outer tube and the circular sleeve of the knob.

8. The ultrasonic surgical instrument as described in claim 1 or 7, characterized in that, The scalpel bar can slide axially through the channel, and the rear end of the scalpel bar is fixedly connected to the amplitude rod shaft of the transducer. The transducer can be wholly or partially accommodated in the cavity by the ultrasonic surgical handle.

9. An ultrasonic surgical system, characterized in that, The device includes an ultrasonic surgical instrument as described in any one of claims 1 to 8, 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 the plug of the power adapter is connected via an electrical socket at the lower part of the ultrasonic surgical handle.

Images