Ultrasonic knife assembly and ultrasonic surgical operating instrument

Abstract

The utility model discloses an ultrasonic knife assembly and an ultrasonic surgical operating instrument, the ultrasonic surgical operating instrument comprises a waveguide rod, a handle and a first transducer, and the handle is of a hollow shell structure and is used for connecting the first end of the waveguide rod and the second end of the first transducer; the first transducer is used for converting the received electric energy into kinetic energy; a limiting part is arranged in the shell structure and avoids the first transducer, so that the second end of the first transducer is acoustically connected with the first end of the waveguide rod, and kinetic energy is acoustically transmitted to the first end of the waveguide rod through the second end and then transmitted to the other end of the waveguide rod through the waveguide rod; moreover, the limiting part is also used for abutting against the second transducer, so as to limit the acoustic connection between the second transducer and the first end of the waveguide rod. According to the ultrasonic surgical operating instrument, the limiting part can abut against the second transducer so as to limit acoustic connection between the second transducer and the first end of the waveguide rod, and the problem that an ultrasonic knife assembly of the ultrasonic surgical operating instrument and transducers with unmatched models are mistakenly installed can be solved.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and particularly to an ultrasonic scalpel assembly and an ultrasonic surgical instrument. Background Art

[0002] An ultrasonic surgical instrument generally includes an ultrasonic scalpel assembly and a transducer. For an ultrasonic surgical instrument with a split structure of the ultrasonic scalpel assembly and the transducer, since there are various different models for the ultrasonic scalpel assembly and the transducer, each model of the ultrasonic assembly generally needs to be assembled with a specific model of the transducer to ensure the normal operation of the ultrasonic surgical instrument. However, during the actual assembly process, the operator may misassemble the ultrasonic scalpel assembly with a transducer of an incompatible model. Summary of the Utility Model

[0003] An embodiment of this application provides an ultrasonic scalpel assembly and an ultrasonic surgical instrument, aiming to solve the problem that the ultrasonic scalpel assembly of an ultrasonic surgical instrument is easily misassembled with a transducer of an incompatible model.

[0004] An embodiment of this application provides an ultrasonic surgical instrument, including a waveguide rod, a handle, and a first transducer. The handle is a hollow housing structure for connecting the first end of the waveguide rod and the second end of the first transducer; the first transducer is used to convert the received electrical energy into kinetic energy.

[0005] A limiting portion is provided inside the housing structure. The limiting portion avoids the first transducer so that the second end of the first transducer is acoustically connected to the first end of the waveguide rod, and after acoustically transmitting the kinetic energy to the first end of the waveguide rod through the second end, it is then transmitted to the other end of the waveguide rod through the waveguide rod.

[0006] Moreover, the limiting portion is further used to abut against a second transducer to limit the acoustic connection between the second transducer and the first end of the waveguide rod.

[0007] In some embodiments, in the axial direction of the waveguide rod, the travel of the second end of the first transducer from the limiting portion to be acoustically connected to the first end of the waveguide rod is L1, and the travel of the second transducer from the limiting portion to abut against the limiting portion is L2; wherein, L1 > L2.

[0008] In some embodiments, the housing structure includes a mounting portion. The mounting portion is provided with a mounting through-hole, and the housing structure acoustically connects the first end of the waveguide rod and the second end of the first transducer through the mounting through-hole in the axial direction of the waveguide rod; the limiting portion protrudes from the inner peripheral surface of the mounting through-hole.

[0009] In some embodiments, the limiting portion is arranged along the circumferential direction of the mounting through-hole.

[0010] In some embodiments, the limiting portion is an annular structure disposed on the mounting portion and circumferentially arranged along the inner wall of the mounting portion, and the limiting portion has an avoidance space for the first transducer portion to pass through.

[0011] In some embodiments, the waveguide rod extends from the third end of the housing structure, and the limiting portion includes a limiting surface for abutting against the second transducer. The distance from the limiting surface to the third end is greater than or equal to 28 mm and less than or equal to 85 mm; or, the distance from the limiting surface to the third end is greater than or equal to 32 mm and less than or equal to 85 mm.

[0012] In some embodiments, the limiting portion and the housing structure are an integral structure.

[0013] In some embodiments, the first end of the waveguide rod and the housing structure are respectively detachably connected to the first transducer.

[0014] In some embodiments, the second transducer includes a housing and a horn;

[0015] Wherein, the housing includes a front housing for inserting into the mounting through hole. The front housing is provided with an abutting portion, and the limiting portion is used for abutting against the abutting portion to limit the acoustic connection between the horn and the first end of the waveguide rod, thereby limiting the kinetic energy from being acoustically transmitted to the first end of the waveguide rod; or,

[0016] Wherein, a mounting seat is provided in the mounting through hole, and the mounting seat is provided with an electrode plate; the second transducer further includes a conductive ring for electrically connecting to the electrode plate. The outer peripheral surface of the conductive ring is convexly provided with an abutting portion, and the limiting portion is used for abutting against the abutting portion to limit the acoustic connection between the horn and the first end of the waveguide rod, thereby limiting the kinetic energy from being acoustically transmitted to the first end of the waveguide rod.

[0017] In some embodiments, the abutting portion is circumferentially arranged along the front housing; or, the abutting portion is circumferentially arranged along the conductive ring.

[0018] An embodiment of the present application further provides an ultrasonic knife assembly, including a waveguide rod and a handle. The handle is a hollow housing structure for connecting the first end of the waveguide rod and the second end of the first transducer; the first transducer is used for converting the received electrical energy into kinetic energy;

[0019] A limiting portion is provided inside the housing structure. The limiting portion is used to avoid the first transducer, so that the second end of the first transducer is acoustically connected to the first end of the waveguide rod, and after the kinetic energy is acoustically transmitted to the first end of the waveguide rod through the second end, it is then transmitted to the other end through the waveguide rod;

[0020] Moreover, the limiting portion is further used to abut against the second transducer to limit the acoustic connection between the second transducer and the first end of the waveguide rod.

[0021] In some embodiments, in the axial direction of the waveguide rod, the travel of the second end of the first transducer from the limiting portion to the acoustic connection with the first end of the waveguide rod is L1, and the travel of the second transducer from the limiting portion to the abutment with the limiting portion is L2; wherein, L1 > L2.

[0022] In some embodiments, the housing structure includes a mounting portion. The mounting portion is provided with a mounting through-hole, and the housing structure acoustically connects the first end of the waveguide rod and the second end of the first transducer in the axial direction of the waveguide rod through the mounting through-hole; the limiting portion protrudes from the inner peripheral surface of the mounting through-hole.

[0023] In some embodiments, the limiting portion is arranged along the circumferential direction of the mounting through-hole.

[0024] In some embodiments, the first end of the waveguide rod and the housing structure are respectively used for detachably connecting with the first transducer.

[0025] By providing a limiting portion inside the hollow housing structure for connecting the first end of the waveguide rod and the second end of the first transducer in the ultrasonic surgical instrument provided by the embodiments of the present application, the limiting portion can avoid the first transducer and will not hinder the acoustic connection process between the second end of the first transducer and the first end of the waveguide rod, so that the first end of the waveguide rod of the ultrasonic knife assembly is acoustically connected to the second end of the first transducer with a matching model.

[0026] On this basis, by further enabling the limiting portion to also abut against the second transducer to limit the acoustic connection between the second transducer and the first end of the waveguide rod, that is, the limiting portion can cause an obstruction during the acoustic connection process between the second transducer and the first end of the waveguide rod, thereby avoiding the acoustic connection between the first end of the waveguide rod of the existing ultrasonic knife assembly and the second transducer with an unmatched model, and realizing the problem of preventing the misinstallation of the ultrasonic knife assembly of the ultrasonic surgical instrument and the transducer with an unmatched model. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The technical solutions and other beneficial effects of the present application will become obvious by describing the specific embodiments of the present application in detail with reference to the accompanying drawings.

[0028] Figure 1 This is a schematic structural diagram of an embodiment of the ultrasonic outer surgical instrument provided by the embodiment of the present application. Among them, the first end of the waveguide rod is in an acoustic connection state with the second end of the first transducer;

[0029] Figure 2 This is a schematic structural diagram when the limiting part abuts against the second transducer provided by the embodiment of the present application;

[0030] Figure 3 This is a cross-sectional view of an embodiment of the handle provided by the embodiment of the present application;

[0031] Figure 4 This is a schematic structural diagram when the second end of the first transducer of the ultrasonic outer surgical instrument provided by the embodiment of the present application is flush with the mounting part;

[0032] Figure 5 This is a schematic structural diagram when the second transducer of the ultrasonic outer surgical instrument provided by the embodiment of the present application is flush with the mounting part;

[0033] Figure 6 This is a schematic structural diagram of an embodiment of the ultrasonic knife assembly provided by the embodiment of the present application.

[0034] Ultrasonic surgical instrument 10; ultrasonic knife assembly 11; waveguide rod 110; first end 1101; threaded hole 1102; handle 120; mounting part 121; mounting through hole 1211; inner peripheral surface 1212; mounting port 1213; limiting part 1214; avoidance space 1215; third end 1216; limiting surface 1217; hand-held part 122; mounting seat 130; electrode plate 140; first transducer 150; second end 151; threaded rod 152; ultrasonic knife head 160; conductive ring 170; second transducer 20; housing 210; front housing 211; abutting part 212; horn 220. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0036] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0037] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" shall be construed broadly. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection, an electrical connection or a connection capable of mutual communication; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0038] In the present application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0039] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0040] An embodiment of the present application provides an ultrasonic scalpel assembly and an ultrasonic surgical instrument. The following will be described in detail separately.

[0041] Figure 1 It is a schematic structural diagram of an embodiment of the ultrasonic surgical instrument provided by an embodiment of the present application. Among them, the first end of the waveguide rod is in an acoustic connection state with the second end of the first transducer. As Figure 1 shown, the ultrasonic surgical instrument 10 includes an ultrasonic scalpel assembly 11 and a first transducer 150. The ultrasonic scalpel assembly 11 includes a waveguide rod 110 and a handle 120. The handle 120 is a hollow housing structure for connecting the first end 1101 of the waveguide rod 110 and the second end 151 of the first transducer 150, so that the first end 1101 of the waveguide rod 110 and the second end 151 of the first transducer 150 are acoustically connected. The first transducer 150 is used to convert the received electrical energy into kinetic energy, and after the second end 151 of the first transducer 150 is acoustically connected to the first end 1101 of the waveguide rod 110, the kinetic energy is transmitted to the waveguide rod 110 and then transmitted through the waveguide rod 110 to the ultrasonic knife head 160 connected to the end of the waveguide rod 110 away from the first transducer 150.

[0042] Among them, the first end 1101 of the waveguide rod 110 and the first transducer 150 can be respectively connected to the hollow housing of the handle 120, so that the first end 1101 of the waveguide rod 110 and the second end 151 of the first transducer 150 are acoustically connected. Specifically, the first end 1101 of the waveguide rod 110 and the second end 151 of the first transducer 150 can be respectively installed into the hollow housing structure to acoustically connect the first end 1101 of the waveguide rod 110 and the second end 151 of the first transducer 150.

[0043] Alternatively, the first end 1101 of the waveguide rod 110 can also be connected to the hollow housing structure of the handle 120, and the second end 151 of the first transducer 150 is acoustically connected to the first end 1101 of the waveguide rod 110, so as to connect the first end 1101 of the waveguide rod 110 and the second end 151 of the first transducer 150.

[0044] In some embodiments, the housing structure of the handle 120 may include a mounting portion 121 for connecting the first end 1101 of the waveguide rod 110 and the second end 151 of the first transducer 150, so as to acoustically connect the first end 1101 of the waveguide rod 110 and the second end 151 of the first transducer 150. Additionally, the handle 120 may further include a handheld portion 122 connected to the mounting portion 121 for a medical staff member to hold, so as to facilitate the medical staff member to hold the handle 120 for performing an operation.

[0045] Wherein, a mounting through hole 1211 may be formed in the mounting portion 121, and the hollow housing structure acoustically connects the first end 1101 of the waveguide rod 110 and the second end 151 of the first transducer 150 in the axial direction of the waveguide rod 110 through the mounting through hole 1211 of the mounting portion 121. Thus, the first end 1101 of the waveguide rod 110 can be installed in the mounting through hole 1211 of the mounting portion 121, and after the second end 151 of the first transducer 150 is inserted into the mounting hole, it can be aligned and connected with the first end 1101 of the waveguide rod 110, and the operation is very convenient.

[0046] Specifically, the first end 1101 of the waveguide rod 110 is located in the mounting through hole 1211, and the other end of the waveguide rod 110 extends out from one end of the mounting through hole 1211. The second end 151 of the first transducer 150 is inserted into the mounting through hole 1211 from the other end of the mounting through hole 1211 and acoustically connected to the first end 1101 of the waveguide rod 110.

[0047] In some embodiments, the first end 1101 of the waveguide rod 110 and the housing structure may be detachably connected to the second end 151 of the first transducer 150 respectively, that is, after the first end 1101 of the waveguide rod 110 and the housing structure are connected to the second end 151 of the first transducer 150 respectively, the first end 1101 of the waveguide rod 110 and the housing structure can be separated from the second end 151 of the first transducer 150 again, so as to facilitate the replacement of the easily worn waveguide rod 110 and the handle 120.

[0048] Wherein, the waveguide rod 110 may be installed in the housing structure, and the first end 1101 of the waveguide rod 110 and the second end 151 of the first transducer 150 are threadedly connected, so as to detachably connect the first end 1101 of the waveguide rod 110 and the housing structure to the second end 151 of the first transducer 150 respectively. Specifically, as Figure 3 and Figure 4As shown, a threaded hole 1102 can be opened at the first end 1101 of the waveguide rod 110, and a threaded rod 152 can be provided at the second end 151 of the first transducer 150. By screwing the threaded rod 152 into the threaded hole 1102, the first end 1101 of the waveguide rod 110 and the second end 151 of the first transducer 150 can be threadedly connected.

[0049] Of course, it is also possible to non-detachably connect the first end 1101 of the waveguide rod 110 and the housing structure to the first transducer 150. That is, after the first end 1101 of the waveguide rod 110 and the housing structure are connected to the first transducer 150, the three cannot be separated.

[0050] In some embodiments, as Figure 1 and Figure 2 shown, a limiting portion 1214 can be provided inside the housing structure of the handle 120. The limiting portion 1214 can avoid the first transducer 150, so that the second end 151 of the first transducer 150 can be acoustically connected to the first end 1101 of the waveguide rod 110, and after the kinetic energy is acoustically transmitted to the first end 1101 of the waveguide rod 110 through the second end 151, it is then transmitted to the other end of the waveguide rod 110 through the waveguide rod 110. Moreover, the limiting portion 1214 can also be used to abut against the second transducer 20 to limit the acoustic connection between the second transducer 20 and the first end 1101 of the waveguide rod 110.

[0051] By providing the limiting portion 1214 inside the hollow housing structure for connecting the first end 1101 of the waveguide rod 110 and the second end 151 of the first transducer 150 in the ultrasonic surgical instrument 10 provided by the embodiment of the present application, the limiting portion 1214 can avoid the first transducer 150 and will not hinder the acoustic connection process between the second end 151 of the first transducer 150 and the first end 1101 of the waveguide rod 110, so that the first end 1101 of the waveguide rod 110 of the ultrasonic knife assembly 11 is acoustically connected to the second end 151 of the first transducer 150 with a matching model.

[0052] On this basis, by making the limiting portion 1214 also capable of abutting against the second transducer 20 to limit the acoustic connection between the second transducer 20 and the first end 1101 of the waveguide rod 110, that is, the limiting portion 1214 can cause an obstruction during the acoustic connection process between the second transducer 20 and the first end 1101 of the waveguide rod 110, thereby avoiding the acoustic connection between the first end 1101 of the waveguide rod 110 of the existing ultrasonic knife assembly 11 and the second transducer 20 with a non-matching model, and realizing the problem of preventing the ultrasonic knife assembly 11 of the ultrasonic surgical instrument 10 from being misassembled with a non-matching transducer.

[0053] Such as Figure 4 and Figure 5As shown in the figure, in the axial direction of the waveguide rod 110, the travel of the second end 151 of the first transducer 150 from the limiting part 1214 to the acoustic connection with the first end 1101 of the waveguide rod 110 is L1, and the travel of the second transducer 20 from the limiting part 1214 to the position where it abuts against the limiting part 1214 is L2; where L1 > L2. Thus, in the axial direction of the waveguide rod 110, during the process of the second transducer 20 moving from the limiting part 1214 towards the waveguide rod 110, the limiting part 1214 can abut against the second transducer 20 before the second transducer 20 is connected to the second end 151 of the waveguide rod 110, resulting in insufficient travel of the second transducer 20, thereby preventing the second transducer 20 from acoustically connecting with the first end 1101 of the waveguide rod 110.

[0054] It should be noted that the travel L1 is the distance that the second end 151 of the first transducer 150 moves along the axial direction of the waveguide rod 110 from the position flush with the limiting part 1214 to the position where the second end 151 of the first transducer 150 is acoustically connected to the first end 1101 of the waveguide rod 110. Similarly, the travel L2 is the distance that the second transducer 20 moves along the axial direction of the waveguide rod 110 from the position flush with the limiting part 1214 when one end of the second transducer 20 approaches the waveguide rod 110 to the position where the limiting part 1214 abuts against the second transducer 20 and the second transducer 20 cannot move further.

[0055] Since L1 > L2, when the second transducer 20 moves to the position where it abuts against the limiting part 1214, there is still a certain distance between the second transducer 20 and the first end 1101 of the waveguide rod 110, and they cannot be acoustically connected.

[0056] In some embodiments, as Figure 1 and Figure 3 shown, the limiting part 1214 can be convexly provided on the inner peripheral surface 1212 of the mounting through-hole 1211, so that the limiting part 1214 can abut against the second transducer 20 inserted into the mounting through-hole 1211, and the structure of the limiting part 1214 is relatively simple.

[0057] Among them, the limiting part 1214 can be arranged along the circumferential direction of the mounting through hole 1211 to further improve the limiting effect on the second transducer 20. Specifically, the limiting part 1214 can be an annular structure arranged on the mounting part 121 and along the circumferential direction of the inner wall of the mounting part 121, and the limiting part 1214 has an avoidance space 1215 for part of the first transducer 150 to pass through. When the second end 151 of the first transducer 150 is inserted into the mounting through hole 1211 of the mounting part 121, the second end 151 of the first transducer 150 can pass through the avoidance space 1215 of the limiting part 1214 and will not be blocked by the limiting part 1214, so that the second end 151 of the first transducer 150 can be smoothly acoustically connected to the first end 1101 of the waveguide rod 110.

[0058] When the second transducer 20 is inserted into the mounting through hole 1211 of the mounting part 121, the second transducer 20 cannot pass through the avoidance space 1215 of the limiting part 1214, or, as Figure 2 shown, after a part of the second transducer 20 passes through the avoidance space 1215 of the limiting part 1214, the limiting part 1214 will abut against the second transducer 20 to prevent the second transducer 20 from continuing to move, so that the second transducer 20 cannot be acoustically connected to the first end 1101 of the waveguide rod 110.

[0059] Of course, the limiting part 1214 can also be a discontinuous structure arranged on the mounting part 121 and along the circumferential direction of the inner wall of the mounting part 121. For example: the limiting part 1214 can be a curved structure arranged on the mounting part 121 and along the circumferential direction of the inner wall of the mounting part 121. Or, the limiting part 1214 is a plurality of abutting structures arranged on the mounting part 121 and along the circumferential direction of the inner wall of the mounting part 121, and the abutting structure can be a protrusion protruding from the inner wall of the mounting part 121 or other structures that can abut against the second transducer 20.

[0060] Among them, when the limiting part 1214 is a discontinuous structure arranged on the mounting part 121 and along the circumferential direction of the inner wall of the mounting part 121, the limiting part 1214 can abut against the second transducer 20 when the second transducer 20 is inserted into the mounting through hole 1211 at different angles, so as to limit the acoustic connection between the second transducer 20 and the first end 1101 of the waveguide rod 110.

[0061] Specifically, when the second transducer 20 is inserted into the mounting through hole 1211 after rotating around the axis of the waveguide rod 110 by any angle, the limiting part 1214 can abut against the second transducer 20 to limit the acoustic connection between the second transducer 20 and the first end 1101 of the waveguide rod 110.

[0062] In some embodiments, such as Figure 3 and Figure 4As shown, the waveguide rod 110 extends from the third end 1216 of the housing structure. The limiting portion 1214 includes a limiting surface 1217 for abutting against the second transducer 20. The distance from the limiting surface 1217 to the third end 1216 of the housing structure is H. Among them, the distance H from the limiting surface 1217 to the third end 1216 can be made greater than or equal to 28 mm and less than or equal to 85 mm, so that the limiting surface 1217 of the limiting portion 1214 can avoid the first transducer 150 and can abut against the second transducer 20. The distance H from the limiting surface 1217 to the third end 1216 can specifically be 30 mm, 35 mm, 40 mm, 60 mm, 70 mm, etc., and can be specifically determined according to the structures of the ultrasonic knife assembly 11 and the first transducer 150.

[0063] In other embodiments, the distance H from the limiting surface 1217 of the limiting portion 1214 to the third end 1216 of the housing structure can also be made greater than or equal to 32 mm and less than or equal to 85 mm, so that the limiting surface 1217 of the limiting portion 1214 can avoid the first transducer 150 and can abut against the second transducer 20. The distance H from the limiting surface 1217 to the third end 1216 can specifically be 35 mm, 40 mm, 50 mm, 60 mm, 70 mm, etc., and can be specifically determined according to the structures of the ultrasonic knife assembly 11 and the first transducer 150.

[0064] In some embodiments, the limiting portion 1214 and the housing structure can be made into an integral structure, so that the processing of the handle 120 is more convenient. Moreover, it can also improve the connection strength between the limiting portion 1214 and the housing structure, which is beneficial to improving the limiting effect of the limiting portion 1214 on the second transducer 20 and reducing the risk that the force exerted by the second transducer 20 on the limiting portion 1214 is too large and causes damage to the limiting portion 1214.

[0065] Of course, the limiting portion 1214 and the housing structure can also be made into a split structure, and the limiting portion 1214 is connected to the housing structure by means of pasting, snap connection or other methods.

[0066] As Figure 4 shown, an installation seat 130 is provided in the installation through hole 1211 of the handle 120, and the installation seat 130 is provided with an electrode sheet 140. The second transducer 20 further includes a conductive ring 170 for electrically connecting with the electrode sheet 140. The installation through hole 1211 forms an installation opening 1213 at one end of the housing structure for the first transducer 150 to be inserted.

[0067] In some embodiments, as Figure 2 and Figure 5As shown, the limiting portion 1214 can be located on the side of the mounting base 130 facing the mounting opening 1213, so that after the second transducer 20 is inserted into the mounting through-hole 1211, the limiting portion 1214 can come into contact with the second transducer 20 in advance to limit the acoustic connection between the second transducer 20 and the first end 1101 of the waveguide rod 110.

[0068] As Figure 2 and Figure 5 shown, the second transducer 20 includes a housing 210 and a horn 220. The horn 220 is used for acoustic connection with the waveguide rod 110 of the ultrasonic knife assembly 11 adapted to the model of the second transducer 20, so that the horn 220 transfers kinetic energy to the waveguide rod 110 of the ultrasonic knife assembly 11 adapted to the model of the second transducer 20.

[0069] Among them, the second transducer 20 can include a contact portion 212. When the second transducer 20 is inserted into the mounting through-hole 1211 of the housing structure, the limiting portion 1214 comes into contact with the contact portion 212 of the second transducer 20 to limit the acoustic connection between the second transducer 20 and the first end 1101 of the waveguide rod 110. The contact portion 212 can be located on the insulating portion of the second transducer 20 or on the conductive portion of the second transducer 20, which can be determined according to the position of the limiting portion 1214 specifically.

[0070] In some embodiments, a contact portion 212 can be convexly provided on the outer peripheral surface of the conductive ring 170 of the second transducer 20. The limiting portion 1214 is used to contact the contact portion 212 to limit the acoustic connection between the horn 220 of the second transducer 20 and the first end 1101 of the waveguide rod 110, thereby limiting the acoustic transfer of kinetic energy to the first end 1101 of the waveguide rod 110.

[0071] By convexly providing a contact portion 212 on the outer peripheral surface of the conductive ring 170 of the second transducer 20, when the conductive ring 170 of the second transducer 20 is inserted into the mounting through-hole 1211, the limiting portion 1214 can quickly and accurately contact the contact portion 212 to limit the further movement of the second transducer 20.

[0072] Among them, the contact portion 212 provided on the conductive ring 170 can be arranged along the circumferential direction of the conductive ring 170, so that when the second transducer 20 is inserted into the mounting through-hole 1211 at different angles, the limiting portion 1214 can contact the contact portion 212 to limit the acoustic connection between the second transducer 20 and the first end 1101 of the waveguide rod 110.

[0073] Specifically, the abutting portion 212 provided on the conductive ring 170 can be an annular structure arranged along the circumferential direction of the conductive ring 170, so that when the second transducer 20 is inserted into the mounting through-hole 1211 after rotating an arbitrary angle around the axis of the waveguide rod 110, the limiting portion 1214 can abut against the second transducer 20 to limit the acoustic connection between the second transducer 20 and the first end 1101 of the waveguide rod 110.

[0074] Of course, the abutting portion 212 provided on the conductive ring 170 can also be a discontinuous structure arranged along the circumferential direction of the conductive ring 170. For example, the abutting portion 212 can be a curved structure arranged along the circumferential direction of the conductive ring 170. Or, the abutting portion 212 can be a plurality of convex structures arranged along the circumferential direction of the conductive ring 170.

[0075] Continue to refer to Figure 2 and Figure 5 , the housing 210 of the second transducer 20 includes a front housing 211 for inserting into the mounting through-hole 1211 of the housing structure. In other embodiments, an abutting portion 212 can be provided on the front housing 211 of the second transducer 20, and the limiting portion 1214 is used to abut against the abutting portion 212 to limit the acoustic connection between the horn 220 and the first end 1101 of the waveguide rod 110, thereby restricting the kinetic energy from being acoustically transmitted to the first end 1101 of the waveguide rod 110.

[0076] By providing the abutting portion 212 on the front housing 211 of the second transducer 20 for inserting into the mounting through-hole 1211 of the housing structure, when the front housing 211 of the second transducer 20 is inserted into the mounting through-hole 1211, the limiting portion 1214 can quickly and accurately abut against the abutting portion 212 to limit the further movement of the second transducer 20.

[0077] Among them, the abutting portion 212 provided on the front housing 211 can be arranged along the circumferential direction of the front housing 211, so that when the second transducer 20 is inserted into the mounting through-hole 1211 at different angles, the limiting portion 1214 can abut against the abutting portion 212 to limit the acoustic connection between the second transducer 20 and the first end 1101 of the waveguide rod 110.

[0078] Specifically, the abutting portion 212 can be an annular structure arranged along the circumferential direction of the front housing 211, so that when the second transducer 20 is inserted into the mounting through-hole 1211 after rotating an arbitrary angle around the axis of the waveguide rod 110, the limiting portion 1214 can abut against the second transducer 20 to limit the acoustic connection between the second transducer 20 and the first end 1101 of the waveguide rod 110.

[0079] Of course, the abutting portion 212 may also be a discontinuous structure arranged along the circumferential direction of the front housing 211. For example, the abutting portion 212 may be a curved structure arranged along the circumferential direction of the front housing 211. Alternatively, the abutting portion 212 may be a plurality of convex structures arranged along the circumferential direction of the front housing 211.

[0080] An embodiment of the present application further provides an ultrasonic knife assembly. As Figure 1 、 Figure 2 and Figure 6 shown, the ultrasonic knife assembly 11 includes a waveguide rod 110 and a handle 120. Among them, the handle 120 is a hollow housing structure for connecting the first end 1101 of the waveguide rod 110 and the second end 151 of the first transducer 150; the first transducer 150 is used to convert the received electrical energy into kinetic energy.

[0081] A limiting portion 1214 is provided inside the housing structure. The limiting portion 1214 is used to avoid the first transducer 150, so that the second end 151 of the first transducer 150 is acoustically connected to the first end 1101 of the waveguide rod 110, and after the kinetic energy is acoustically transmitted to the first end 1101 of the waveguide rod 110 through the second end 151, it is then transmitted to the other end of the waveguide rod 110 through the waveguide rod 110.

[0082] Moreover, the limiting portion 1214 is further used to abut against the second transducer 20 to limit the acoustic connection between the second transducer 20 and the first end 1101 of the waveguide rod 110.

[0083] The ultrasonic knife assembly 11 provided by the embodiment of the present application is provided with a limiting portion 1214 inside the hollow housing structure for connecting the first end 1101 of the waveguide rod 110 and the second end 151 of the first transducer 150, so that the limiting portion 1214 can avoid the first transducer 150 and will not hinder the acoustic connection process between the second end 151 of the first transducer 150 and the first end 1101 of the waveguide rod 110, so that the first end 1101 of the waveguide rod 110 of the ultrasonic knife assembly 11 is acoustically connected to the second end 151 of the first transducer 150 with a matching model.

[0084] On this basis, by further enabling the limiting portion 1214 to be able to abut against the second transducer 20 to limit the acoustic connection between the second transducer 20 and the first end 1101 of the waveguide rod 110, that is, the limiting portion 1214 can cause an obstruction during the acoustic connection process between the second transducer 20 and the first end 1101 of the waveguide rod 110, thereby avoiding the acoustic connection between the first end 1101 of the waveguide rod 110 of the existing ultrasonic knife assembly 11 and the second transducer 20 with a non-matching model, and realizing the problem of preventing the ultrasonic knife assembly 11 of the ultrasonic surgical instrument 10 from being misassembled with a non-matching transducer.

[0085] Among them, the specific structure of the ultrasonic knife assembly 11 can refer to the above-mentioned embodiments, which will not be elaborated here one by one.

[0086] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not elaborated in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0087] The above has introduced in detail an ultrasonic knife assembly and an ultrasonic surgical instrument provided by the embodiments of the present application. Specific examples are used herein to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present application; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An ultrasonic surgical instrument, comprising a waveguide rod, a handle and a first transducer, wherein the handle is a hollow shell structure, used to connect the first end of the waveguide rod and the second end of the first transducer; the first transducer is used to convert received electrical energy into kinetic energy; characterized in that: A limiting portion is provided inside the housing structure, and the limiting portion avoids the first transducer, so that the second end of the first transducer is acoustically connected to the first end of the waveguide rod, and the kinetic energy is acoustically transmitted to the first end of the waveguide rod through the second end, and then transmitted to the other end thereof through the waveguide rod; Furthermore, the limiting portion is further used to abut against the second transducer to limit the acoustic connection between the second transducer and the first end of the waveguide rod.

2. The ultrasonic surgical instrument according to claim 1, wherein, In the axial direction of the waveguide rod, the stroke of the second end of the first transducer moving from the limit portion to the acoustic connection with the first end of the waveguide rod is L1, and the stroke of the second transducer moving from the limit portion to the abutment with the limit portion is L2; wherein L1>L2.

3. The ultrasonic surgical instrument according to claim 1, wherein, The shell structure includes a mounting portion, which is provided with a mounting through hole, and the shell structure acoustically connects the first end of the waveguide rod and the second end of the first transducer in the axial direction of the waveguide rod through the mounting through hole; the limiting portion is protruded from the inner circumferential surface of the mounting through hole.

4. The ultrasonic surgical instrument according to claim 3, wherein The limiting portion is arranged along the circumference of the mounting through hole.

5. The ultrasonic surgical instrument according to claim 4, wherein, The limiting portion is an annular structure provided on the mounting portion and arranged circumferentially along the inner wall of the mounting portion, and the limiting portion has an escape space for the first transducer to partially pass through.

6. The ultrasonic surgical instrument according to any one of claims 1 to 5, characterized in that, The waveguide rod extends from the third end of the shell structure, and the limiting portion includes a limiting surface for abutting against the second transducer, and the distance from the limiting surface to the third end is greater than or equal to 28 mm and less than or equal to 85 mm; or, the distance from the limiting surface to the third end is greater than or equal to 32 mm and less than or equal to 85 mm.

7. The ultrasonic surgical instrument according to any one of claims 1 to 5, characterized in that, The limiting portion and the housing structure are an integrated structure.

8. The ultrasonic surgical instrument according to any one of claims 1 to 5, characterized in that The first end of the waveguide rod and the housing structure are respectively detachably connected to the first transducer.

9. The ultrasonic surgical instrument according to any one of claims 3 to 5, characterized in that, The second transducer comprises a housing and a horn; Wherein, the housing comprises a front housing for inserting into the mounting through hole, the front housing is provided with an abutting portion, and the limiting portion is used to abut against the abutting portion to limit the acoustic connection between the amplitude transformer and the first end of the waveguide rod, thereby limiting the acoustic transmission of the kinetic energy to the first end of the waveguide rod; or, Wherein, a mounting seat is provided in the mounting through hole, and an electrode sheet is provided on the mounting seat; the second transducer also includes a conductive ring for electrically connecting to the electrode sheet, and a contact portion is convexly provided on the outer peripheral surface of the conductive ring, and the limiting portion is used to abut against the contact portion to limit the acoustic connection between the amplitude transformer and the first end of the waveguide rod, thereby limiting the acoustic transmission of the kinetic energy to the first end of the waveguide rod.

10. The ultrasonic surgical instrument according to claim 9, wherein, The abutting portion is arranged along the circumference of the front shell; or, the abutting portion is arranged along the circumference of the conductive ring.

11. An ultrasonic scalpel assembly, comprising a waveguide rod and a handle. The handle is a hollow housing structure for connecting the first end of the waveguide rod and the second end of a first transducer. The first transducer is configured to convert received electrical energy into kinetic energy. It is characterized in that: A limiting portion is provided inside the housing structure. The limiting portion is configured to avoid the first transducer, such that the second end of the first transducer is acoustically connected to the first end of the waveguide rod, and after acoustically transmitting the kinetic energy to the first end of the waveguide rod through the second end, the kinetic energy is further transmitted to the other end of the waveguide rod through the waveguide rod. Moreover, the limiting portion is further configured to abut against a second transducer to limit the acoustic connection between the second transducer and the first end of the waveguide rod.

12. The ultrasonic knife assembly according to claim 11, wherein, In the axial direction of the waveguide rod, the travel distance of the second end of the first transducer moving from the limiting portion to being acoustically connected to the first end of the waveguide rod is L1, and the travel distance of the second transducer moving from the limiting portion to abutting against the limiting portion is L2. Wherein, L1 > L2.

13. The ultrasonic scalpel assembly according to claim 11, wherein, The housing structure includes a mounting portion. The mounting portion is provided with a mounting through-hole, and the housing structure acoustically connects the first end of the waveguide rod and the second end of the first transducer in the axial direction of the waveguide rod through the mounting through-hole. The limiting portion protrudes from the inner peripheral surface of the mounting through-hole.

14. The ultrasonic knife assembly according to claim 13, wherein, The limiting portion is arranged along the circumferential direction of the mounting through-hole.

15. The ultrasonic knife assembly according to any one of claims 11 to 14, characterized in that, The first end of the waveguide rod and the housing structure are respectively configured to be detachably connected to the first transducer.

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