An ultrasonic surgical instrument and ultrasonic blade system

Abstract

The embodiment of the present application provides an ultrasonic surgical instrument and an ultrasonic knife system, which comprise a handle assembly, an ultrasonic transducer and a first conductive assembly, at least a part of the ultrasonic transducer is arranged in the handle assembly, and the ultrasonic transducer is arranged with a first wire body and a second wire body; the first conductive assembly comprises a first conductive part, a second conductive part and a first rolling part, the first conductive part is electrically connected with electronic devices of the handle assembly, the first conductive part has a first hole; the second conductive part is arranged at least partially in the first hole, is electrically connected with the first wire body and can rotate together with the ultrasonic transducer; the first rolling part is arranged in a radial gap formed by the first conductive part and the second conductive part, and the first conductive part and the second conductive part are kept in conductive contact with the first rolling part; when the ultrasonic transducer rotates as a whole relative to the handle assembly, the ultrasonic transducer drives the second conductive part to rotate relative to the first conductive part. The embodiment of the present application can improve the conductive reliability between the ultrasonic transducer and the handle assembly.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to an ultrasonic surgical instrument and an ultrasonic scalpel system. Background Technology

[0002] In related technologies, ultrasonic transducers and handle assemblies of ultrasonic surgical instruments achieve conductivity through conductive contact between conductive components and conductive springs. During the insertion of the ultrasonic transducer into the handle assembly, the transducer needs to rotate relative to the handle assembly. At this time, the conductive component and the conductive spring slide relative to each other at the contact point. This sliding friction can easily cause the plating on the surfaces of the conductive component and the conductive spring to peel off, increasing contact resistance, reducing conductivity, and potentially leading to poor contact and affecting surgical outcomes. Furthermore, the conductive spring contacts the conductive component through its own elastic deformation. With repeated use, this elastic deformation may gradually fail, resulting in plastic deformation. At this point, the conductive spring almost loses its elasticity, which may also lead to poor contact and affect surgical results. Summary of the Invention

[0003] In view of this, embodiments of this application aim to provide an ultrasonic surgical instrument and ultrasonic scalpel system to improve the electrical conductivity reliability between the ultrasonic transducer and the handle assembly.

[0004] This application provides an ultrasonic surgical instrument, comprising:

[0005] Handle assembly, with electronic components,

[0006] An ultrasonic transducer, at least a portion of which is placed inside the handle assembly, wherein a first wire and a second wire are arranged inside the ultrasonic transducer, and the second wire is used to transmit power to the ultrasonic transducer.

[0007] A waveguide rod, the proximal end of which is acoustically connected to the ultrasonic transducer;

[0008] An end-processing assembly is acoustically connected to the distal end of the waveguide rod, and the ultrasonic vibrations generated by the ultrasonic transducer are transmitted to the end-processing assembly via the waveguide rod.

[0009] The first conductive component includes:

[0010] A first conductive element is electrically connected to the electronic components of the handle assembly and remains relatively stationary with respect to the handle assembly. The first conductive element has a first hole.

[0011] The second conductive element, at least a portion of which is disposed in the first hole, is electrically connected to the first wire, and is capable of rotating together with the ultrasonic transducer;

[0012] A first rolling element is disposed within the radial gap formed by the first conductive element and the second conductive element, and both the first conductive element and the second conductive element maintain conductive contact with the first rolling element;

[0013] When the ultrasonic transducer rotates relative to the handle assembly, the ultrasonic transducer causes the second conductive element to rotate relative to the first conductive element.

[0014] In the ultrasonic surgical instrument of this application embodiment, when the ultrasonic transducer rotates relative to the handle assembly, the first conductive element and the first rolling element roll into contact, and the first rolling element and the second conductive element roll into contact. The frictional force of the rolling contact is rolling friction, which is relatively small and is unlikely to cause the coating on the surface of the first rolling element, the first conductive element, and the second conductive element to peel off. Therefore, it can ensure that the contact resistance of the contact part is small, ensure conductivity, and improve the working reliability of the ultrasonic surgical instrument.

[0015] In the ultrasonic surgical instrument of this application embodiment, the first conductive component achieves conductivity through rolling contact, without relying on the elastic deformation of the components. Therefore, there is no phenomenon of poor conductive contact caused by elastic deformation failure.

[0016] The ultrasonic surgical instrument of this application embodiment has multiple first rolling elements between the first conductive element and the second conductive element, which increases the conductivity redundancy. Even if some of the first rolling elements fail to conduct electricity, the remaining first rolling elements can still conduct electricity. In addition, under the gravity of the first rolling elements, at least one first rolling element can be simultaneously in conductive contact with the first conductive element and the second conductive element, ensuring good conductivity.

[0017] This application provides an ultrasonic surgical instrument, comprising:

[0018] A handle assembly having electronic components, wherein a first wire and a second wire are arranged inside the handle assembly, wherein the first wire is electrically connected to the electronic components;

[0019] An ultrasonic transducer, at least a portion of which is housed within the handle assembly;

[0020] A waveguide rod, the proximal end of which is acoustically connected to the ultrasonic transducer.

[0021] An end-processing assembly is acoustically connected to the distal end of the waveguide rod, and the ultrasonic vibrations generated by the ultrasonic transducer are transmitted to the end-processing assembly via the waveguide rod.

[0022] Conductive components, including:

[0023] A conductive outer ring is electrically connected to the second wire and remains relatively stationary with respect to the handle assembly;

[0024] A conductive inner ring is disposed radially inside the conductive outer ring, electrically connected to the ultrasonic transducer, and capable of rotating together with the ultrasonic transducer;

[0025] A rolling element is rotatably disposed within the radial gap between the conductive outer ring and the conductive inner ring, both of which maintain conductive contact with the rolling element; the second wire supplies power to the ultrasonic transducer via the conductive assembly;

[0026] When the ultrasonic transducer rotates relative to the handle assembly, the ultrasonic transducer causes the conductive inner ring to rotate relative to the conductive outer ring.

[0027] In the ultrasonic surgical instrument of this application embodiment, when the ultrasonic transducer rotates relative to the handle assembly, there is rolling contact between the conductive outer ring and the rolling element, and rolling contact between the rolling element and the conductive inner ring. The frictional force of the rolling contact is rolling friction, which is relatively small. Therefore, it is not easy for the coating on the surface of the rolling element, the conductive outer ring, and the conductive inner ring to fall off. Thus, it can ensure that the contact resistance of the contact parts is small, ensure conductivity, and improve the reliability of the ultrasonic surgical instrument.

[0028] The ultrasonic surgical instrument of this application uses rolling conductive contact for its conductive components, which does not rely on the elastic deformation of the components. Therefore, there is no phenomenon of poor conductive contact caused by elastic deformation failure.

[0029] The ultrasonic surgical instrument of this application embodiment has multiple rolling elements between the conductive outer ring and the conductive inner ring, which increases the conductivity redundancy. That is, even if some rolling elements fail to conduct electricity, the remaining rolling elements can still conduct electricity. In addition, under the gravity of the rolling elements, at least one rolling element can be simultaneously in conductive contact with the conductive outer ring and the conductive inner ring, ensuring good conductivity.

[0030] This application provides an ultrasonic scalpel system, including:

[0031] The host and the ultrasonic surgical instrument described in any embodiment of this application, wherein the host communicates with the electronic devices of the handle assembly through the first line and provides power to the ultrasonic transducer through the second line.

[0032] In the ultrasonic scalpel system of this application embodiment, the ultrasonic transducer maintains reliable electrical conductivity when rotating relative to the handle assembly. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the ultrasonic surgical instrument according to the first embodiment of this application;

[0034] Figure 2 for Figure 1A schematic diagram showing the separation of the ultrasonic transducer and the handle assembly in the structure shown;

[0035] Figure 3 for Figure 1 A magnified view of a portion of point A in the middle;

[0036] Figure 4 This is a simplified schematic diagram of a first conductive component according to an embodiment of this application;

[0037] Figure 5 This is a schematic diagram showing the arrangement of two first conductive components in one embodiment of this application;

[0038] Figure 6 This is a schematic diagram showing the arrangement of the three first conductive components in one embodiment of this application;

[0039] Figure 7 This is a schematic diagram of the structure of the ultrasonic surgical instrument according to the second embodiment of this application;

[0040] Figure 8 for Figure 7 A schematic diagram showing the separation of the ultrasonic transducer and the handle assembly in the structure shown;

[0041] Figure 9 This is a schematic diagram of the structure of the ultrasonic surgical instrument according to the third embodiment of this application;

[0042] Figure 10 This is a schematic diagram of an ultrasonic scalpel system according to an embodiment of this application.

[0043] Explanation of reference numerals in the attached figures

[0044] Handle assembly 10; main body 11; grip 12; cable pass 12a; circuit board 131; operation key 132; ultrasonic transducer 20; housing 21; retractable housing section 211; piezoelectric ceramic 22; amplitude transformer 23; connecting section 231; first cable 31; second cable 32;

[0045] First conductive component 40; First conductive element 41; Second conductive element 42; First rolling element 43;

[0046] Second conductive component 50; Third conductive element 51; Fourth conductive element 52; Second rolling element 53;

[0047] Conductive component 60; conductive outer ring 61; conductive inner ring 62; rolling element 63;

[0048] Waveguide rod 70;

[0049] Host 200;

[0050] Cable 30; Detailed Implementation

[0051] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0052] In the description of the embodiments of this application, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0053] This application provides an ultrasonic scalpel system. Please refer to [link / reference]. Figure 10 This includes the host 200 and the ultrasonic surgical instruments of any embodiment of this application.

[0054] Please see Figures 1 to 9 The ultrasonic surgical instrument includes a handle assembly 10, an ultrasonic transducer 20, a waveguide rod 70, and an end-effector assembly.

[0055] Please see Figure 1 , Figure 7 and Figure 9 At least a portion of the ultrasonic transducer 20 is placed inside the handle assembly 10.

[0056] The ultrasonic transducer 20 is used to generate acoustic vibrations. Specifically, the ultrasonic transducer 20 is electrically connected to the main unit 200 and converts the electrical energy output by the main unit 200 into acoustic vibrations through components such as the piezoelectric ceramic 22.

[0057] The proximal end of waveguide rod 70 is acoustically connected to ultrasonic transducer 20. Waveguide rod 70 is used to transmit acoustic vibrations to the distal end of waveguide rod 70.

[0058] The end-processing component is acoustically connected to the far end of the waveguide rod 70, and the ultrasonic vibrations generated by the ultrasonic transducer 20 are transmitted to the end-processing component via the waveguide rod 70.

[0059] The shape of the waveguide rod 70 is not limited, as long as it can transmit acoustic vibrations to the end processing assembly. For example, the waveguide rod 70 can have a substantially uniform cross-section, or the waveguide rod 70 can be tapered in various parts or can be tapered along its entire length.

[0060] End-effectors are used for cutting, hemostasis, and other treatments of biological tissues.

[0061] For example, the end-effector assembly includes a blade and a clamping arm, the blade having a tissue cutting surface and the clamping arm having a tissue pad, the tissue cutting surface engaging with the tissue pad to clamp the tissue.

[0062] The blade has a small amplitude but a high vibration frequency, generating high instantaneous acceleration. During tissue cutting, the targeted tissue can be quickly cut without damaging surrounding tissue. The continuous vibration of the blade generates heat through friction with the tissue, which helps to stop bleeding and promote coagulation at the wound surface. For example, the tissue cutting surface is smooth, which reduces the likelihood of tissue debris remaining, lowers surgical risks, and facilitates cleaning of the blade.

[0063] The handle assembly 10 has electronic components. These electronic components refer to devices disposed on the handle assembly 10 that require electricity. For example, the electronic components include a circuit board 131 and operation keys 132 exposed on the outer surface of the handle assembly 10. The operation keys 132 are electrically connected to the circuit board 131 and are used to trigger the circuit board 131 to generate a control signal when a pressing operation is applied. It is understood that, in addition to the circuit board 131 and operation keys 132, the handle assembly 10 may also have other types of electronic components.

[0064] For example, the operation key 132 includes at least one gear shift button, which is used to adjust the output power of the ultrasonic surgical instrument. It should be noted that there may be one or more gear shift buttons, and there is no limitation on this.

[0065] It should be noted that in embodiments with only one power level switch button, the power level can be switched using the same button. Specifically, for example, if an ultrasonic surgical instrument has three power output levels, pressing the power level switch button for the first level; pressing it a second time switches to the second level; and pressing it a third time switches to the third level. Pressing it again switches back to the first level. By repeatedly pressing the same power level switch button, the corresponding power level can be selected.

[0066] In embodiments where there are multiple gear shift buttons, each gear shift button may correspond to a power output.

[0067] It should be noted that the ultrasonic transducer 20 can be detached from the handle assembly 10. When connection is required, at least one end of the ultrasonic transducer 20 is screwed into the handle assembly 10, thereby connecting the ultrasonic transducer 20 to the proximal end of the waveguide rod 70. For example, in some embodiments, the ultrasonic transducer 20 is threaded to the proximal end of the waveguide rod 70, so that the ultrasonic transducer 20 rotates relative to the handle assembly 10 during connection.

[0068] The ultrasonic surgical instrument has a first filament 31 and a second filament 32.

[0069] The main unit 200 communicates with the electronics of the handle assembly 10 via the first cable 31 and supplies power to the ultrasonic transducer 20 via the second cable 32. In other words, the second cable 32 provides power and is used to transmit control signals.

[0070] Exemplarily, the handle assembly 10 includes a main body 11 and a grip portion 12 disposed on the bottom side of the main body 11. The grip portion 12 is for use by medical personnel, and at least a portion of the ultrasonic transducer 20 and the first conductive component 40 are disposed within the main body 11. The main body 11 extends generally along the length direction of the waveguide rod 70, which is inserted into the main body 11 from one end, and the ultrasonic transducer 20 is inserted into the main body 11 from the other end. That is, the waveguide rod 70 and the ultrasonic transducer 20 are respectively inserted into the main body 11 from opposite ends.

[0071] The aforementioned electronic components can be mounted on the main body 11 or on the gripping part 12; there is no limitation on this.

[0072] It should be noted that the main body 11 and the gripping part 12 can be a separate structure, or at least a part of the main body 11 and at least a part of the gripping part 12 can be an integrally molded structure, for example, integral injection molding.

[0073] For example, please refer to Figure 2 , Figure 8 and Figure 9 The ultrasonic transducer 20 includes a housing 21, a piezoelectric ceramic 22 disposed within the housing 21, and an amplitude transformer 23. The amplitude transformer 23 acoustically connects the piezoelectric ceramic 22 and the waveguide rod 70. The piezoelectric ceramic 22 is used to convert electrical energy into ultrasonic vibration, and the amplitude transformer 23 is used to amplify the particle displacement or velocity of the ultrasonic vibration of the piezoelectric ceramic 22 and transmit it to the waveguide rod 70.

[0074] It should be noted that the rotation of the ultrasonic transducer 20 relative to the handle assembly 10 means that the housing 21, the piezoelectric ceramic 22 and the amplitude transformer 23 inside the housing 21 rotate together as a whole relative to the handle assembly 10.

[0075] The ultrasonic surgical instrument of the first embodiment of this application will be described below.

[0076] Please see Figure 1 , Figure 2 and Figure 3In the first embodiment of this application, a first wire 31 and a second wire 32 are arranged inside the ultrasonic transducer 20. The second wire 32 is used to transmit power to the ultrasonic transducer 20. That is, the first wire 31 and the second wire 32 are connected to the ultrasonic transducer 20, but the first wire 31 and the second wire 32 are not directly physically connected to the handle assembly 10. Please refer to [link / reference]. Figure 2 When the ultrasonic transducer 20 is removed from the handle assembly 10, the first wire 31 and the second wire 32 follow the ultrasonic transducer 20 and separate from the handle assembly 10.

[0077] Understandably, when the ultrasonic transducer 20 rotates relative to the handle assembly 10, the electrical connection between the first wire 31 and the electronic device needs to satisfy the relative rotation of the ultrasonic transducer 20 relative to the handle assembly 10 in order to prevent the first wire 31 from being torn off.

[0078] Therefore, in the first embodiment of this application, please refer to Figures 1 to 3 The ultrasonic surgical instrument includes a first conductive component 40, a first wire 31, and electronic devices that establish a conductive path through the first conductive component 40.

[0079] Please see Figure 3 and Figure 4 The first conductive component 40 includes a first conductive element 41, a second conductive element 42, and a first rolling element 43.

[0080] The first conductive element 41 is electrically connected to the electronic components of the handle assembly 10 and remains relatively stationary with respect to the handle assembly 10. That is, during the rotation of the ultrasonic transducer 20 relative to the handle assembly 10, the first conductive element 41 will not rotate with the ultrasonic transducer 20, and there is no relative movement between the first conductive element 41 and the handle assembly 10. The ultrasonic transducer 20 as a whole rotates relative to the first conductive element 41.

[0081] The first conductive element 41 has a first hole.

[0082] At least a portion of the second conductive element 42 is disposed within the first hole. The second conductive element 42 is electrically connected to the first wire 31 and can rotate together with the ultrasonic transducer 20. That is, during the rotation of the ultrasonic transducer 20 relative to the handle assembly 10, the second conductive element 42 and the ultrasonic transducer 20 rotate together as a whole, causing the second conductive element 42 to rotate relative to the first conductive element 41.

[0083] Please see Figure 3 There is a radial gap 40a between the circumferential outer surface of the second conductive element 42 and the hole wall of the first hole, and the two are not in direct contact.

[0084] Please see Figure 3The first rolling element 43 is disposed within the radial gap 20a formed by the first conductive element 41 and the second conductive element 42, and both the first conductive element 41 and the second conductive element 42 maintain conductive contact with the first rolling element 43. In this way, a conductive path is established between the first conductive element 41 and the second conductive element 42 through the first rolling element 43.

[0085] The first rolling element 43 not only enables the conductive transfer between the first conductive element 41 and the second conductive element 42, but also ensures that the first conductive element 41 and the second conductive element 42 are arranged coaxially.

[0086] When the ultrasonic transducer 20 rotates relative to the handle assembly 10, the ultrasonic transducer 20 drives the second conductive element 42 to rotate relative to the first conductive element 41.

[0087] When the ultrasonic transducer 20 rotates relative to the handle assembly 10, since the first wire 31 is connected to the second conductive element 42 and the two do not move relative to each other, the second conductive element 42 is connected to the first conductive element 41 through the first rolling element 43, and the electronic device is electrically connected to the first conductive element 41 and the two do not move relative to each other. Therefore, the first wire 31 and the electronic device establish a conductive path through the second conductive element 42, the first rolling element 43, and the first conductive element 41.

[0088] In the ultrasonic surgical instrument of this application embodiment, when the ultrasonic transducer 20 rotates relative to the handle assembly 10, the first conductive element 41 and the first rolling element 43 roll into contact, and the first rolling element 43 and the second conductive element 42 roll into contact. The frictional force of the rolling contact is rolling friction, which is relatively small and is unlikely to cause the coating on the surface of the first rolling element 43, the first conductive element 41, and the second conductive element 42 to peel off. Therefore, it can ensure that the contact resistance of the contact part is small, ensure the conductivity, and improve the working reliability of the ultrasonic surgical instrument.

[0089] In the ultrasonic surgical instrument of this application embodiment, the first conductive component 40 achieves conductivity by rolling contact, without relying on the elastic deformation of the components. Therefore, there is no phenomenon of poor conductive contact caused by elastic deformation failure.

[0090] It should be noted that there are multiple first rolling elements 43. In this embodiment, "multiple" means no less than two.

[0091] In the ultrasonic surgical instrument of this application embodiment, the multiple first rolling elements 43 between the first conductive element 41 and the second conductive element 42 increase the conductivity redundancy. Even if some of the first rolling elements 43 fail to conduct electricity, the remaining first rolling elements 43 can still conduct electricity. In addition, under the gravity of the first rolling elements 43, at least one or more first rolling elements 43 can be ensured to make conductive contact with the first conductive element 41 and the second conductive element 42 at the same time, ensuring good conductivity.

[0092] The specific shape of the first rolling element 43 is not limited. For example, in some embodiments, the first rolling element 43 is spherical, and in this embodiment, the first rolling element 43 is a ball. In other embodiments, the first rolling element 43 is cylindrical, and in a plane perpendicular to the rotation axis of the first conductive element 41, the cross-sectional shape of the first rolling element 43 is circular. In this embodiment, the first rolling element 43 can be a thin and long needle roller.

[0093] The number of first rolling elements 43 is unlimited, as long as they can stabilize the rotation axis of the first conductive element 41. For example, the number of first rolling elements 43 is not less than three. The three first rolling elements 43 define a circle on the circumferential surface of the second conductive element 42, that is, three points define a circle, and the center of the circle determines the rotation axis of the second conductive element 42.

[0094] For example, each of the first rolling elements 43 is arranged at uniform intervals along the circumference of the second conductive element 42.

[0095] The shapes of the first conductive element 41 and the second conductive element 42 are not limited.

[0096] For example, both the first conductive element 41 and the second conductive element 42 are annular and concentrically arranged. In this embodiment, the first conductive component 40 is constructed in the form of a bearing, which is simple in structure.

[0097] The position of the first conductive component 40 is not limited. For example, it can be located at the first end of the ultrasonic transducer 20 away from the waveguide rod 70, or near the second end of the waveguide rod 70, or at any position between the first end and the second end of the ultrasonic transducer 20.

[0098] For example, please refer to Figure 1 The first conductive component 40 is located at the end of the ultrasonic transducer 20 near the waveguide rod 70. In this way, the first conductive component 40 can effectively support the end of the ultrasonic transducer 20 near the waveguide rod 70, making the ultrasonic transducer 20 rotate more smoothly and stably.

[0099] The installation method of the first conductive component 40 is not limited.

[0100] For example, please refer to Figure 1 and Figure 2 The first conductive component 40 is mounted as a whole on the handle assembly 10, meaning that when the ultrasonic transducer 20 is detached from the handle assembly 10, the first conductive component 40 remains on the handle assembly 10. The second conductive component 42 has a through hole, a portion of the ultrasonic transducer 20 passes through the through hole and is tightly fitted with the hole wall; the portion of the ultrasonic transducer 20 that contacts the hole wall is provided with a contact point, and the first wire 31 is connected to the contact point.

[0101] It should be noted that the tight fit between the ultrasonic transducer 20 and the wall of the through hole means that after the housing 21 of the ultrasonic transducer 20 is inserted into the through hole, there is a certain pre-tightening force between the housing 21 and the wall of the through hole, so that the ultrasonic transducer 20 and the second conductive element 42 rotate together under the action of the pre-tightening force.

[0102] It should be noted that when the housing 21 of the ultrasonic transducer 20 is inserted into the through hole, the contact point makes conductive contact with the hole wall, thereby achieving conductive connection between the second wire 32 and the second conductive element 42.

[0103] For example, please refer to Figure 3 The housing 21 tapers towards the waveguide rod 70, defining a tapered housing section 211. The tapered housing section 211 is inserted into a through-hole, and contacts are located on its surface. The tapered housing section 211 is generally cylindrical, and its outer diameter is smaller than the outer diameter of the remaining portion of the housing 21 outside the tapered housing section 211. In this embodiment, the tapered housing section 211 reduces the size requirement of the through-hole in the second conductive element 42, resulting in a more compact structure.

[0104] In other embodiments, the first conductive component 40 is integrally mounted on the ultrasonic transducer 20. That is, when the ultrasonic transducer 20 is detached from the handle assembly 10, the first conductive component 40 remains on the ultrasonic transducer 20 and detaches from the handle assembly 10 along with the ultrasonic transducer 20. The handle assembly 10 has a mounting hole inside, and the wall of the mounting hole is provided with contacts, to which electronic devices are electrically connected. The first conductive component 40 is disposed within the mounting hole; that is, when the ultrasonic transducer 20 is inserted into the handle assembly 10, the first conductive component 40 is entirely located within the mounting hole, and the first conductive element 41 maintains conductive contact with the contacts and is tightly fitted with the wall of the mounting hole.

[0105] It should be noted that the tight fit between the first conductive element 41 and the wall of the mounting hole means that after the first conductive element 41 is inserted into the mounting hole, there is a certain pre-tightening force between the outer circumferential surface of the first conductive element 41 and the wall of the mounting hole, so that the first conductive element 41 can remain relatively stationary with the handle assembly 10 based on the pre-tightening force. When the ultrasonic transducer 20 rotates relative to the handle assembly 10, the first conductive element 41 remains stationary, while the second conductive element 42 rotates with the ultrasonic transducer 20.

[0106] For example, the outer diameter of the end of the amplitude rod 23 away from the piezoelectric ceramic 22 is reduced, defining a connecting section 231, which is helically connected to the proximal end of the waveguide rod 70.

[0107] Please see Figure 3 The first conductive component 40 surrounds the outer circumference of the connecting section 231. It should be noted that the first conductive component 40 never directly contacts the waveguide rod 70.

[0108] The first conductive component 40 surrounding the connecting segment 231 in the circumferential direction means that, along the length of the amplitude transformer 23, the position of the first conductive component 40 corresponds to the position of the connecting segment 231.

[0109] Specifically, the connecting section 231 is inserted into the aforementioned shrinkage shell section 211, and the first conductive component 40 is installed on the circumferential outer surface of the shrinkage shell section 211.

[0110] For example, the connecting segment 231 extends from the end of the shrink shell segment 211 away from the piezoelectric ceramic 22, thus facilitating the connection of the connecting segment 231 to the waveguide rod 70 and preventing interference between the shrink shell segment 211 and the waveguide rod 70.

[0111] For example, the second wire 32 is connected to the terminal of the piezoelectric ceramic 22. A conductive path is directly established between the second wire 32 and the terminal of the piezoelectric ceramic 22.

[0112] The number of first conductive components 40 is unlimited; there can be one or more.

[0113] In this embodiment of the application, "multiple" refers to no fewer than two.

[0114] For example, there are multiple first conductive components 40, and each first conductive component 40 is electrically insulated from the others. That is, there is no conductive contact between each first conductive component 40. For example, an insulating pad can be provided between two adjacent first conductive components 40.

[0115] At least two of the plurality of arrangements are arranged axially, and / or at least two of the plurality of arrangements are nested sequentially radially.

[0116] In embodiments with multiple first conductive components 40, signal interaction between multiple electronic devices and the host 200 can be achieved.

[0117] It should be noted that in some embodiments, please refer to Figure 1 and Figure 3 All the first conductive components 40 are arranged axially; in other embodiments, please refer to Figure 6 and Figure 7All the first conductive components 40 are arranged in a radially nested manner; in some embodiments, the number of first conductive components 40 is at least three, at least two of the first conductive components 40 are arranged axially, and at least two of the first conductive components 40 are arranged in a radially nested manner. For example, for ease of description, taking the number of first conductive components 40 as three, they are respectively the first conductive component 40 No. 1, the second conductive component 40, and the third conductive component 40. The first and the second are arranged axially, and the third is arranged radially outside the first, or the third is arranged radially outside the second.

[0118] The ultrasonic surgical instrument of the second embodiment of this application will be described below.

[0119] Please see Figure 7 and Figure 8 , Figure 7 and Figure 8 This is a schematic diagram of the ultrasonic surgical instrument according to the second embodiment of this application.

[0120] The structure of the ultrasonic surgical instrument in the second embodiment is roughly the same as that of the ultrasonic surgical instrument in the first embodiment, except that the ultrasonic surgical instrument in the second embodiment includes a second conductive component 50, while the ultrasonic surgical instrument in the first embodiment does not have a second conductive component 50.

[0121] Specifically, the second conductive component 50 is disposed inside the housing 21.

[0122] The second conductive component 50 includes a third conductive element 51, a fourth conductive element 52, and a second rolling element 53.

[0123] The third conductive element 51 is electrically connected to the second wire 32 and remains relatively stationary with respect to the housing 21.

[0124] The third conductive element 51 has a second hole.

[0125] At least a portion of the fourth conductive element 52 is disposed in the second hole, electrically connected to the piezoelectric ceramic 22, and is capable of rotating together with the piezoelectric ceramic 22 and the amplitude rod 23 as a whole.

[0126] There is a radial gap between the circumferential outer surface of the fourth conductive element 52 and the hole wall of the second hole, and the two do not contact each other directly.

[0127] The second rolling element 53 is disposed within the radial gap between the third conductive element 51 and the fourth conductive element 52, and both the third conductive element 51 and the fourth conductive element 52 maintain conductive contact with the second rolling element 53. In this way, a conductive path is established between the second wire 32 and the piezoelectric ceramic 22 through the third conductive element 51, the second rolling element 53, and the fourth conductive element 52.

[0128] The second rolling element 53 not only enables the conductive transfer between the third conductive element 51 and the fourth conductive element 52, but also ensures that the first conductive element 41 and the second conductive element 42 are arranged coaxially.

[0129] When the piezoelectric ceramic 22 and the amplitude rod 23 rotate relative to the housing 21, the piezoelectric ceramic 22 and the amplitude rod 23 together drive the fourth conductive element 52 to rotate relative to the third conductive element 51.

[0130] During the operation, medical staff may need to rotate the waveguide rod 70 to make the end processing component have a suitable operating angle. In this process, the waveguide rod 70 needs to drive the whole formed by the amplitude rod 23 and the piezoelectric ceramic 22 to rotate relative to the housing 21. That is, the housing 21 will not rotate relative to the handle assembly 10, but the whole formed by the amplitude rod 23 and the piezoelectric ceramic 22 will rotate relative to the housing 21.

[0131] In this embodiment, when the amplitude rod 23 and the piezoelectric ceramic 22 rotate, the fourth conductive element 52 rotates along with the amplitude rod 23 and the piezoelectric ceramic 22. The fourth conductive element 52 rotates relative to the third conductive element 51, and the third conductive element 51 remains relatively stationary with respect to the housing 21. Therefore, even if the amplitude rod 23 and the piezoelectric ceramic 22 rotate relative to the housing 21, it does not affect the second wire 32 supplying power to the piezoelectric ceramic 22. This reduces the risk of the second wire 32 getting tangled and reduces the probability of the second wire 32 being torn off.

[0132] The ultrasonic surgical instrument of the third embodiment of this application will be described below.

[0133] Please see Figure 9 , Figure 9 This is a schematic diagram of the ultrasonic surgical instrument according to the third embodiment of this application.

[0134] Ultrasonic surgical instruments, including a handle assembly 10, an ultrasonic transducer 20, a waveguide rod 70, and an end-effector assembly.

[0135] The handle assembly 10 has electronic components.

[0136] At least a portion of the ultrasonic transducer 20 is inserted into the handle assembly 10.

[0137] The proximal end of waveguide rod 70 is acoustically connected to ultrasonic transducer 20.

[0138] The end-processing component is acoustically connected to the far end of the waveguide rod 70, and the ultrasonic vibrations generated by the ultrasonic transducer 20 are transmitted to the end-processing component via the waveguide rod 70.

[0139] The handle assembly 10 contains a first wire 31 and a second wire 32, with the first wire 31 electrically connected to electronic components. It should be noted that in the first and second embodiments described above, a portion of the first wire 31 and a portion of the second wire 32 are disposed within the ultrasonic transducer 20, and the first wire 31 and the second wire 32 exit from the housing 21 of the ultrasonic transducer 20. However, in the ultrasonic surgical instrument of the third embodiment, the first wire 31 and the second wire 32 are disposed within the handle assembly 10, and the first wire 31 and the second wire 32 exit from the handle assembly 10.

[0140] The ultrasonic surgical instrument includes a conductive component 60. The conductive component 60 includes a conductive outer ring 61, a conductive inner ring 62, and a rolling element 63.

[0141] The conductive outer ring 61 is electrically connected to the second wire 32 and remains relatively stationary with respect to the handle assembly 10.

[0142] The conductive inner ring 62 is disposed radially inside the conductive outer ring 61, is electrically connected to the ultrasonic transducer 20, and can rotate together with the ultrasonic transducer 20.

[0143] The rolling element 63 is rolled within the radial gap between the conductive outer ring 61 and the conductive inner ring 62, and both the conductive outer ring 61 and the conductive inner ring 62 maintain conductive contact with the rolling element 63; thus, a conductive path is established between the conductive inner ring 62 and the conductive outer ring 61 through the rolling element 63.

[0144] The second wire 32 supplies power to the ultrasonic transducer 20 via the conductive component 60.

[0145] When the ultrasonic transducer 20 rotates relative to the handle assembly 10, the ultrasonic transducer 20 drives the conductive inner ring 62 to rotate relative to the conductive outer ring 61.

[0146] In the ultrasonic surgical instrument of this application embodiment, when the ultrasonic transducer 20 rotates relative to the handle assembly 10, since the second wire 32 is connected to the conductive outer ring 61 and the two do not move relative to each other, a conductive path is established between the second wire 32 and the ultrasonic transducer 20 through the conductive outer ring 61, the rolling element 63, and the conductive inner ring 62.

[0147] When the ultrasonic transducer 20 rotates relative to the handle assembly 10, the conductive outer ring 61 and the rolling element 63 make rolling contact, and the rolling element 63 and the conductive inner ring 62 make rolling contact. The frictional force of the rolling contact is rolling friction, which is relatively small. Therefore, it is not easy for the coating on the surface of the rolling element 63, the conductive outer ring 61, and the conductive inner ring 62 to fall off. Thus, it can ensure that the contact resistance of the contact parts is small, ensure conductivity, and improve the reliability of ultrasonic surgical instruments.

[0148] In the ultrasonic surgical instrument of this application embodiment, the conductive component 60 adopts rolling conductive contact, which does not rely on the elastic deformation of the components. Therefore, there is no phenomenon of poor conductive contact caused by elastic deformation failure.

[0149] The ultrasonic surgical instrument of this application embodiment has multiple rolling elements 63 between the conductive outer ring 61 and the conductive inner ring 62, which increases the conductivity redundancy. That is, even if some rolling elements 63 fail to conduct electricity, the remaining rolling elements 63 can still conduct electricity. In addition, under the action of gravity, at least one rolling element 63 can be ensured to make conductive contact with both the conductive outer ring 61 and the conductive inner ring 62 at the same time, ensuring good conductivity.

[0150] The structure of the conductive component 60 in this embodiment can be the same as that of the first conductive component 40 in any of the above embodiments, and will not be described again here.

[0151] The position of the conductive component 60 can be the same as that of the first conductive component 40 described above. For example, the conductive component 60 is located at one end of the ultrasonic transducer 20 near the waveguide rod 70.

[0152] The conductive component 60 is mounted as a whole on the handle assembly 10. A portion of the housing 21 passes through the conductive inner ring 62 and is tightly fitted with the conductive inner ring 62. The housing 21 has contacts at the part that contacts the conductive inner ring 62, and the piezoelectric ceramic 22 is electrically connected to the contacts via a wire. The installation method of the conductive component 60 in this embodiment is roughly the same as that of the first conductive component 60 in the first embodiment, and will not be described again here.

[0153] The end of the housing 21 near the waveguide rod 70 tapers to define a tapered housing section 211. The tapered housing section 211 is inserted into the conductive inner ring 62, and contacts are disposed on the surface of the tapered housing section 211. In this embodiment, the cooperation between the tapered housing section 211 and the conductive inner ring 62 can refer to the cooperation method of the tapered housing section 211 and the second conductive element 42 described above, and will not be repeated here.

[0154] For example, the gripping part 12 has a wire passage 12a from which the first wire 31 and the second wire 32 are led out. In this way, there is no need to lead wires from the main body part 11, which facilitates wiring.

[0155] The first wire 31 and the second wire 32 can be led out from the same wire passage 12a or from different wire passages 12a. For example, in some embodiments, there is one wire passage 12a, and the first wire 31 and the second wire 32 are led out from the same wire passage 12a. In other embodiments, there are multiple wire passages 12a, and the first wire 31 and the second wire 32 are led out from different wire passages 12a.

[0156] The position of the cable pass 12a is not limited.

[0157] For example, please refer to Figure 9 The cable outlet 12a is provided at the bottom end of the grip portion 12. The bottom end and the main body portion 11 are located at opposite ends of the grip portion 12. The first cable 31 and the second cable 32 are led out from the bottom end of the grip portion 12.

[0158] When medical staff hold the grip part 12, the first thread 31 and the second thread 32 naturally hang down from the bottom end of the grip part 12. The medical staff's hand will not grip the first thread 31 and / or the second thread 32, which does not affect the grip feel. On the other hand, since the first thread 31 and the second thread 32 will generate a downward pulling force on the handle assembly 10, arranging the first thread 31 and the second thread 32 at the bottom end of the grip part 12 can make the force on the left and right sides of the handle assembly 10 relatively balanced. When medical staff hold it, they will not feel the uneven force on the left and right sides.

[0159] It should be noted that, in any of the above embodiments, the first wire 31 and the second wire 32 are led out from the ultrasonic transducer 20 or from the handle assembly 10 and then combined into a cable 30. The end of the cable 30 closest to the host 200 has a connector, which is connected to the host 200.

[0160] In the description of this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine different embodiments or examples described in this application, as well as features of different embodiments or examples.

[0161] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. An ultrasonic surgical instrument, characterized in that, include: Handle assembly, with electronic components, An ultrasonic transducer, at least a portion of which is placed inside the handle assembly, has a first wire and a second wire arranged inside it. The first wire is electrically connected to the electronic components of the handle assembly for communication, and the second wire is used to transmit power to the ultrasonic transducer. A waveguide rod, the proximal end of which is acoustically connected to the ultrasonic transducer; An end-processing assembly is acoustically connected to the distal end of the waveguide rod, and the ultrasonic vibrations generated by the ultrasonic transducer are transmitted to the end-processing assembly via the waveguide rod. The first conductive component includes: A first conductive element is electrically connected to the electronic components of the handle assembly and remains relatively stationary with respect to the handle assembly. The first conductive element has a first hole. The second conductive element, at least a portion of which is disposed in the first hole, is electrically connected to the first wire, and is capable of rotating together with the ultrasonic transducer; A first rolling element is disposed within the radial gap formed by the first conductive element and the second conductive element, and both the first conductive element and the second conductive element maintain conductive contact with the first rolling element; When the ultrasonic transducer rotates relative to the handle assembly, the ultrasonic transducer causes the second conductive element to rotate relative to the first conductive element.

2. The ultrasonic surgical instrument according to claim 1, characterized in that, The first conductive component is located at one end of the ultrasonic transducer near the waveguide rod.

3. The ultrasonic surgical instrument according to claim 1, characterized in that, Both the first conductive element and the second conductive element are annular in shape and are arranged concentrically.

4. The ultrasonic surgical instrument according to claim 1, characterized in that, The first conductive component is mounted as a whole on the handle assembly. The second conductive component has a through hole. A portion of the ultrasonic transducer passes through the through hole and is tightly fitted with the hole wall. The portion of the ultrasonic transducer that contacts the hole wall is provided with a contact point, and the first wire is connected to the contact point.

5. The ultrasonic surgical instrument according to claim 4, characterized in that, The ultrasonic transducer includes a housing, a piezoelectric ceramic disposed within the housing, and an amplitude transformer. The amplitude transformer acoustically connects the piezoelectric ceramic and the waveguide rod. The end of the housing near the waveguide rod contracts and defines a contracted housing section. The contracted housing section is inserted into the through hole, and the contact point is disposed on the surface of the contracted housing section.

6. The ultrasonic surgical instrument according to claim 1, characterized in that, The first conductive component is mounted as a whole on the ultrasonic transducer. The handle assembly has a mounting hole inside, and the wall of the mounting hole is provided with a contact. The electronic device is electrically connected to the contact. The first conductive component is disposed in the mounting hole, and the first conductive component is in contact with the contact and is tightly fitted with the wall of the mounting hole.

7. The ultrasonic surgical instrument according to claim 1, characterized in that, The ultrasonic transducer includes a housing, a piezoelectric ceramic disposed within the housing, and an amplitude transformer. The amplitude transformer acoustically connects the piezoelectric ceramic and the waveguide rod. The outer diameter of the end of the amplitude transformer away from the piezoelectric ceramic decreases, defining a connecting section. The connecting section is helically connected to the proximal end of the waveguide rod. The first conductive component surrounds the circumferential outer side of the connecting section.

8. The ultrasonic surgical instrument according to claim 7, characterized in that, The second conductive element has a through hole, the proximal end of the housing tapers and defines a tapered shell section, the tapered shell section is inserted into the through hole, and the connecting section extends from the end of the tapered shell section away from the piezoelectric ceramic.

9. The ultrasonic surgical instrument according to claim 1, characterized in that, The ultrasonic transducer includes a housing, a piezoelectric ceramic disposed within the housing, and an amplitude transformer. The amplitude transformer is acoustically connected to the piezoelectric ceramic and the waveguide rod. The second wire is connected to the terminal of the piezoelectric ceramic.

10. The ultrasonic surgical instrument according to claim 1, characterized in that, The ultrasonic transducer includes a housing, a piezoelectric ceramic disposed within the housing, and an amplitude transformer, the amplitude transformer acoustically connecting the piezoelectric ceramic and the waveguide rod. The ultrasonic surgical instrument includes a second conductive component disposed within the housing, comprising: The third conductive element is electrically connected to the second wire and remains relatively stationary with respect to the housing; the third conductive element has a second hole. The fourth conductive element, at least a portion of which is disposed in the second hole, is electrically connected to the piezoelectric ceramic and is capable of rotating together with the piezoelectric ceramic and the amplitude transformer rod as a whole; The second rolling element is disposed within the radial gap between the third conductive element and the fourth conductive element, and both the third conductive element and the fourth conductive element maintain conductive contact with the second rolling element; When the piezoelectric ceramic and the amplitude transformer rotate relative to the housing, the piezoelectric ceramic and the amplitude transformer together cause the fourth conductive element to rotate relative to the third conductive element.

11. The ultrasonic surgical instrument according to any one of claims 1-10, characterized in that, The electronic components within the handle assembly include a circuit board and operation keys exposed on the outer surface of the handle assembly. The circuit board is electrically connected to the first conductive element, and the operation keys are electrically connected to the circuit board for triggering the circuit board to generate a control signal when subjected to a pressing operation.

12. The ultrasonic surgical instrument according to claim 11, characterized in that, The operation keys include at least one gear shift button, which is used to adjust the output power of the ultrasonic surgical instrument.

13. The ultrasonic surgical instrument according to any one of claims 1-10, characterized in that, The number of the first conductive components is multiple, and each first conductive component is electrically insulated from the others. At least two of the plurality of arrangements are arranged axially, and / or at least two of the plurality of arrangements are nested sequentially radially.

14. An ultrasonic surgical instrument, characterized in that, include: A handle assembly having electronic components, wherein a first wire and a second wire are arranged inside the handle assembly, wherein the first wire is electrically connected to the electronic components for communication interaction; An ultrasonic transducer, at least a portion of which is housed within the handle assembly; A waveguide rod, the proximal end of which is acoustically connected to the ultrasonic transducer. An end-processing assembly is acoustically connected to the distal end of the waveguide rod, and the ultrasonic vibrations generated by the ultrasonic transducer are transmitted to the end-processing assembly via the waveguide rod. Conductive components, including: A conductive outer ring is electrically connected to the second wire and remains relatively stationary with respect to the handle assembly; A conductive inner ring is disposed radially inside the conductive outer ring, electrically connected to the ultrasonic transducer, and capable of rotating together with the ultrasonic transducer; A rolling element is rotatably disposed within the radial gap between the conductive outer ring and the conductive inner ring, both of which maintain conductive contact with the rolling element; the second wire supplies power to the ultrasonic transducer via the conductive assembly; When the ultrasonic transducer rotates relative to the handle assembly, the ultrasonic transducer causes the conductive inner ring to rotate relative to the conductive outer ring.

15. The ultrasonic surgical instrument according to claim 14, characterized in that, The handle assembly includes a main body and a grip portion disposed on the bottom side of the main body. The ultrasonic transducer and the conductive component are disposed within the main body. The grip portion has a wire passage, from which the first wire and the second wire are led out.

16. The ultrasonic surgical instrument according to claim 15, characterized in that, The cable guide is located at the bottom end of the grip portion, and the bottom end and the main body portion are located at opposite ends of the grip portion. The first cable and the second cable are led out from the bottom end.

17. The ultrasonic surgical instrument according to claim 14, characterized in that, The conductive component is located at one end of the ultrasonic transducer near the waveguide rod.

18. The ultrasonic surgical instrument according to claim 14, characterized in that, The conductive component is mounted as a whole on the handle assembly. The ultrasonic transducer includes a housing, a piezoelectric ceramic disposed within the housing, and an amplitude transformer. The amplitude transformer acoustically connects the piezoelectric ceramic and the waveguide rod. A portion of the housing passes through the conductive inner ring and is tightly fitted with the conductive inner ring; the portion of the housing that contacts the conductive inner ring is provided with a contact point, and the piezoelectric ceramic is electrically connected to the contact point via a wire.

19. The ultrasonic surgical instrument according to claim 18, characterized in that, The housing contracts at one end near the waveguide rod, defining a contracted housing section. The contracted housing section is inserted into the conductive inner ring, and the contact point is disposed on the surface of the contracted housing section.

20. The ultrasonic surgical instrument according to any one of claims 14-19, characterized in that, The number of conductive components is multiple, and each conductive component is electrically insulated from the others. At least two of the plurality of arrangements are arranged axially, and / or at least two of the plurality of arrangements are nested sequentially radially.

21. An ultrasonic scalpel system, characterized in that, include: The host and the ultrasonic surgical instrument according to any one of claims 1-20, wherein the host communicates with the electronics of the handle assembly via the first line and provides power to the ultrasonic transducer via the second line.

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