An ultrasonic surgical instrument and an ultrasonic surgical system

Abstract

The present disclosure relates to an ultrasonic surgical instrument and an ultrasonic surgical system, and relates to the technical field of ultrasonic application. The ultrasonic surgical system comprises a cable for providing power from a host to a transducer, the transducer and a blade holder assembly for accommodating a blade rod. The connecting device comprises a base configured to be connected to one of the cable and the transducer; a rotatable part configured to be connected to or constituted by the other of the cable and the transducer and rotatable relative to the base; and an electrically conductive path between the rotatable part and the base is maintained when the rotatable part is rotated relative to the base, and the cable is electrically connected to the transducer via the electrically conductive path. By means of the connecting device, the problem of the cable being easily entangled when the transducer is assembled and disassembled can be significantly alleviated, and the problem of the cable being easily entangled when the direction of the blade is adjusted during use can also be significantly alleviated, thereby improving the convenience and accuracy of operation and improving the user experience of the doctor.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of ultrasonic application, and more particularly, to an ultrasonic surgical instrument and an ultrasonic surgical system, such as an ultrasonic scalpel and an ultrasonic scalpel system. BACKGROUND

[0002] The ultrasonic scalpel has good cutting and coagulation effects in the use of minimally invasive surgery, and has better thermal damage and is safer compared with the high-frequency electric knife. The ultrasonic scalpel system mainly comprises a main machine, a transducer and a handle assembly, wherein the main machine is connected with the transducer through a cable to provide driving power for the transducer, and the handle assembly can be used to accommodate a blade rod, and a blade head can be extended from the handle assembly to perform cutting under the action of the transducer.

[0003] The current transducer and cable are usually designed in an integrated manner so that they are fixed to each other. Good fixation is usually required between the transducer and the blade rod so that the ultrasonic signal from the transducer can be transmitted to the blade rod and then to the blade head and the attenuation in the transmission process is reduced. The prior art usually designs the transducer and the blade rod to be disposable so that they can be integrated and fixed together, for example, the transducer can be rotatably assembled to the blade rod and fixed to the blade rod. If the transducer is rotatably assembled to the blade rod, the rotation of the transducer during the assembly process will cause the cable at the tail of the transducer to be wound, and the wound cable will cause resistance in the rotation direction, affecting the operation feeling of the doctor. On the other hand, the ultrasonic scalpel needs to rotate the blade rod to adjust the direction of the blade head during use in order to process tissues at different positions. Since the blade rod is fixed to the transducer and the transducer is fixed to the cable, the rotation of the blade rod will inevitably cause the transducer and the cable to rotate together. Thus, the weight of the cable itself increases the resistance in the rotation process of the blade rod, and at the same time, the following rotation of the cable also causes a certain rebound of the blade rod during the rotation, which affects the convenience and accuracy of the operation. SUMMARY

[0004] The present disclosure is provided to solve the above problems existing in the prior art.

[0005] There is a need for an ultrasonic surgical instrument and an ultrasonic surgical system, wherein the transducer can be reused, the transducer can be rotatably assembled to the blade rod to significantly reduce the winding of the cable, and during the use of the ultrasonic scalpel system, the doctor can accurately adjust the direction of the blade head without affecting the feeling.

[0006] According to a first aspect of the present disclosure, an ultrasonic surgical instrument is provided, comprising an ultrasonic waveguide assembly, a blade handle assembly, and a detachable transducer mounted on the blade handle assembly, the transducer being in acoustic communication with the ultrasonic waveguide assembly, the transducer being configured to receive electrical energy from a host through a cable and convert the electrical energy into ultrasonic energy to drive the ultrasonic waveguide assembly, an electrically conductive path being formed between the cable and the transducer through a connecting device, the connecting device being located at a proximal end of the transducer, a distal end of the transducer, or between the proximal end and the distal end of the transducer; the connecting device comprising: a base configured to be electrically connected to one of the cable and the transducer; a rotatable part configured to be electrically connected to the other of the cable and the transducer, and rotatable relative to the base.

[0007] The base is provided with a contact assembly, and the rotatable part is provided with an electrically conductive area for forming an electrical connection with the contact assembly, in the case that the rotatable part is rotated relative to the base, the contact assembly moves within the electrically conductive area and maintains electrical connection with the electrically conductive area, so that the electrically conductive path between the cable and the transducer is maintained.

[0008] According to a second aspect of the present disclosure, an ultrasonic surgical system is provided, comprising a host, a cable configured to provide electrical power from the host to a transducer, the transducer, a blade handle assembly configured to receive a blade, and a connecting device for an ultrasonic blade system, wherein the cable and the transducer are connected via the connecting device.

[0009] The ultrasonic surgical instrument and the ultrasonic surgical system provided by the embodiments of the present disclosure can significantly alleviate the problem of easy entanglement of the cable when the reusable transducer is assembled and disassembled, facilitate the wide and convenient application of the reusable transducer in the ultrasonic blade system, and thus significantly reduce the cost compared with the ultrasonic blade system using disposable transducers. The problem of easy entanglement of the cable caused by adjusting the direction of the blade head during use is also significantly alleviated, the convenience and accuracy of operation are improved, and the use experience of the doctor is improved. BRIEF DESCRIPTION OF DRAWINGS

[0010] In the drawings, which are not necessarily drawn to scale, like numerals can describe similar components in different views. The drawings are intended to illustrate various embodiments in accordance with the present disclosure, and are not intended to limit the disclosure in any way. Wherever possible, the same reference numbers are used throughout the drawings to refer to the same or like parts. Such embodiments are illustrative rather than limiting, and are not intended to exhaustively enumerate all possible implementations of the present devices or methods.

[0011] Figure 1 A structural schematic diagram of an ultrasonic blade system according to an embodiment of the present disclosure is shown.

[0012] Figure 2 A structural schematic diagram of a connecting device for an ultrasonic knife system according to an embodiment of the present disclosure is shown.

[0013] Figure 3 A structural schematic diagram of an ultrasonic knife system according to an embodiment of the present disclosure is shown.

[0014] Figure 4 A structural schematic diagram of a connecting device for an ultrasonic knife system according to an embodiment of the present disclosure is shown.

[0015] Figure 5 A structural schematic diagram of an ultrasonic knife system according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0016] In order to make the technical solution of the present disclosure better understood by those skilled in the art, the present disclosure will be described in detail below in combination with the drawings and specific embodiments. The embodiments of the present disclosure will be described in further detail below in combination with the drawings and specific embodiments, but should not be regarded as limiting the present disclosure. The order in which each step is described herein as an example should not be regarded as limiting, and those skilled in the art should know that the order can be adjusted, as long as the logic between them is not destroyed and the entire process cannot be implemented.

[0017] The "first", "second" and similar words used in the present disclosure do not represent any order, quantity or importance, but are only used to distinguish different parts. The words such as "include" or "contain" mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements. "Up", "down", "left", "right" and the like are only used to represent relative positional relationships, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0018] In the present disclosure, when it is described that a specific device is located between a first device and a second device, there can be an intervening device between the specific device and the first device or the second device, or there can be no intervening device. When it is described that a specific device is connected to other devices, the specific device can be directly connected to the other devices without an intervening device, or can not be directly connected to the other devices with an intervening device.

[0019] All terms used in the present disclosure, including technical or scientific terms, have the same meanings as those understood by a person having ordinary knowledge in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and not in an idealized or overly formal sense, unless otherwise specifically defined herein.

[0020] The surgical instrument disclosed in the present application comprises an ultrasonic waveguide assembly, a handle assembly, and a detachable transducer mounted on the handle assembly, the transducer being in acoustic communication with the ultrasonic waveguide assembly, the transducer being used to receive electrical energy from a host through a cable and convert it into ultrasonic energy to drive the ultrasonic waveguide assembly, an electrically conductive path being formed between the cable and the transducer through a connecting device, the connecting device being located at the proximal end, the distal end of the transducer, or between the proximal end and the distal end of the transducer;

[0021] The connecting device comprises:

[0022] a base portion configured to be electrically connected to one of the cable and the transducer;

[0023] a rotatable portion configured to be electrically connected to the other of the cable and the transducer, and rotatable relative to the base portion;

[0024] The base portion is provided with a contact assembly, and the rotatable portion is provided with an electrically conductive area for forming an electrical connection with the contact assembly, in the case that the rotatable portion is rotated relative to the base portion, the contact assembly moves within the electrically conductive area and maintains electrical connection with the electrically conductive area, so that the electrically conductive path between the cable and the transducer is maintained.

[0025] It can be understood that the connecting device can be located at the proximal end, the distal end of the transducer, or between the proximal end and the distal end of the transducer, that is, one of the base portion and the rotatable portion of the connecting device is located at the proximal end, the distal end of the transducer, or between the proximal end and the distal end of the transducer, which can be determined according to the structural layout in the handle assembly.

[0026] Figure 1 A structural schematic diagram of an ultrasonic knife system according to an embodiment of the present disclosure is shown. The ultrasonic knife system can include a cable 12 providing electrical power from a host 11 to a transducer 14, the transducer 14, and a handle assembly 15 which can accommodate a blade shaft 16, in use, a blade head (not shown in the figure) can be extended to perform cutting and / or coagulation treatment on a target site. Among them, the blade shaft 16 is disposable, and the transducer 14 can be reusable. As shown, a connecting device 13 is also provided in the present embodiment, so that the cable 12 and the transducer 14 are docked with each other via the connecting device 13. Figure 1

[0027] In some embodiments, the connecting device 13 can include a base portion 131, a rotatable portion 132, and a contact assembly 133. The base portion 131 is configured to be electrically connected to one of the cable 12 and the transducer 14, and the rotatable portion 132 is configured to be electrically connected to the other of the cable 12 and the transducer 14, and rotatable relative to the base portion 131. The base portion 131 is provided with the contact assembly 133, and the rotatable portion 132 is provided with an electrically conductive area for forming an electrical connection with the contact assembly 133, in the case that the rotatable portion 132 is rotated relative to the base portion 131, the contact assembly 133 moves within the electrically conductive area and maintains electrical connection with the electrically conductive area, so that the electrically conductive path between the cable 12 and the transducer 14 is maintained. Figure 1 ​(not shown), configured to connect to one of the cable 12 and the transducer 14; rotatable part ( Figure 1 (Not shown in the image) is configured to connect to or utilize another of the cable 12 and transducer 14, and is rotatable relative to the base. When the rotatable portion rotates relative to the base, it maintains a conductive path with the base, allowing the cable 12 to be electrically connected to the transducer 14 via this conductive path. By configuring the rotatable portion to rotate relative to the base, the cable 12 and transducer 14 can rotate relative to each other, significantly reducing the accompaniment of one when the other rotates. The structure and operation of the connection device will be described below using the base configuration connected to the cable 12 as an example, where the rotatable portion rotates actively and the base follows. However, this disclosure is not limited to this; those skilled in the art can adjust the description accordingly to obtain structures and operations in various cases where the base is connected to the transducer 14, where the base can also rotate actively and the rotatable portion can follow, which will not be elaborated here.

[0028] In some embodiments, the base can be connected to the cable 12, and the rotatable part can be connected to the transducer 14. During the assembly or removal of the transducer 14 for future use, the transducer 14 can rotate relative to the cable 12. The connecting device reduces cable tangling caused by the rotation of the transducer 14. During use, the blade direction is adjusted as needed to treat tissues in different locations. Since the blade shank 16 is fixed to the transducer 14 and the transducer 14 is connected to the cable 12, the rotation of the blade shank 16 will cause the transducer 14 to rotate. At this time, because a connecting device connects the transducer 14 and the cable 12, the transducer 14 can rotate relative to the cable 12 under the action of the connecting device, which can significantly reduce the follow-up rotation of the cable 12. Whether the transducer 14 is rotated to assemble into the blade shank 16 or removed for future use, or when the direction of the blade is adjusted during the use of the ultrasonic scalpel system, the rotatable part is rotatable relative to the base and maintains a conductive path with the base, allowing the cable 12 to be electrically connected to the transducer 14 via the conductive path. This significantly alleviates the problem of cable tangling during the assembly and disassembly of the reusable transducer 14, facilitating its widespread and convenient application in ultrasonic scalpel systems and thus significantly reducing costs compared to systems using disposable transducers. It also significantly reduces cable tangling issues caused by adjusting the scalpel head's direction during use, improving operational convenience and accuracy, and enhancing the doctor's user experience.

[0029] In some embodiments, the interaction mechanism between the base and the rotatable part can be constructed such that when the rotatable part rotates relative to the base, the amount of rotation of the base is below a threshold. Specifically, when the rotatable part is connected to cable 12, the base is connected to transducer 14; when the rotatable part is connected to transducer 14, the base is connected to cable 12. In both cases, the base and the rotatable part can achieve smooth relative rotation, ensuring that the amount of rotation caused by the active rotation of one part is below a threshold. This ensures that the cable 12 will not become entangled, whether during the rotational assembly or disassembly of transducer 14 or during various adjustments to the blade head during use. The threshold corresponding to the amount of rotation of the base can be obtained in advance through experiments. For example, for various ultrasonic scalpel systems, the corresponding threshold for the amount of rotation can be obtained in advance through experimental measurement. These thresholds may differ between ultrasonic scalpel systems under different conditions. For example, for ultrasonic scalpel systems of different models and service lives, a threshold value for the amount of rotation required to prevent cable 12 from tangling can be pre-measured to obtain the threshold value under various application scenarios. This measured threshold value can then be applied to ultrasonic scalpel systems of the same or similar models and service lives. The model of the ultrasonic scalpel system indicates the components used and their assembly method, while the service life of the ultrasonic scalpel system indicates the wear and tear of its components and transmission system. By differentiating the threshold value for the amount of rotation based on model and service life, the construction of the connecting device can be adapted to the actual conditions of the ultrasonic scalpel system, ensuring that the ultrasonic scalpel system under these conditions will not experience cable 12 tangling under various application scenarios.

[0030] Figure 2 A schematic diagram of a connection device for an ultrasonic scalpel system according to an embodiment of the present disclosure is shown. Figure 2 As shown, the connecting device may include a base 132 and a rotatable portion 133. At least one conductive region 135 is provided on the rotatable portion 133. Any two adjacent conductive regions are insulated from each other to prevent signal interference between adjacent conductive paths, thus facilitating good signal transmission. At least one biasing member 134 corresponding to the at least one conductive region 135 is provided on the base 132. When the rotatable portion 133 rotates relative to the base 132, the at least one biasing member 134 remains in contact with the corresponding conductive region of the at least one conductive region 135, and the biasing member 134 is also conductive. For a single conductive region, one or more biasing members 134 may be provided, and the relationship between the conductive region and the biasing member can be one-to-one or one-to-many. In some embodiments, the biasing member 134 may take various forms, such as, but not limited to, a metal spring, an elastic conductive washer, etc., which will not be elaborated further here.

[0031] In some embodiments, such as Figure 2As shown, the rotatable part 133 and the base part 132 are respectively configured as two annular parts in a sleeving manner. Specifically, the rotatable part 133 and the base part 132 are both in a cylindrical structure, the rotatable part 133 and the base part 132 are in a sleeving manner, and the rotatable part 133 is located inside the base part 132. The sleeving manner of the base part 132 and the rotatable part 133 is conducive to saving the space of the ultrasonic knife system. The at least one conductive area 135 of the rotatable part 133 is arranged on the outer periphery of the rotatable part 133 in a circumferential direction and is electrically connected to the cable 12 via the first output line 131. The at least one biasing member 134 of the base part 132 extends from the inner periphery of the base part 132 inwardly to form a contact connection with the corresponding conductive area, and is electrically connected to the transducer 14 via the second output line 136. Through the biasing action of the biasing member 134 matched via the contact connection, the resistance at the connection can be significantly reduced while ensuring conductive contact, so that the mutual rotation between the rotatable part 133 and the base part 132 is more smooth, thereby reducing the following of the base part. In some embodiments, the at least one conductive area 135 can include a plurality of circumferentially extending conductive areas which are separate in the longitudinal direction of the rotatable part 133. The at least one annular conductive area 135 is arranged on the rotatable part 133 and is separate in the longitudinal direction of the rotatable part. Each conductive area 135 maintains contact with the biasing member 134 arranged on the base part 132 in a corresponding manner. In the case that the rotatable part 133 is rotatable relative to the base part 132, stable and good transmission of signals can be achieved.

[0032] Figure 3 A structural schematic diagram of an ultrasonic knife system according to an embodiment of the present disclosure is shown. As shown in FIG. 1, the ultrasonic knife system includes a cable 12, a transducer 14, a rotatable part 133, a base part 132, and a handle 11. The cable 12 is electrically connected to the transducer 14 via a first output line 131. The transducer 14 is electrically connected to the rotatable part 133 via a second output line 136. The rotatable part 133 is rotatably connected to the base part 132. The handle 11 is connected to the base part 132. Figure 3As shown, the ultrasonic knife system can include a cable 12 providing power from the host 11 to the transducer 14, the transducer 14 and the handle assembly 15 which can accommodate a blade shaft 16, in use, a blade head (not shown in the figure) can be extended to perform cutting and / or coagulation treatment on a target site. Among them, the blade shaft 16 is disposable, and the transducer 14 can be reusable. The transducer 14 in the embodiment is configured as a rotatable part. The housing of the transducer 14 is provided with at least one conductive area 302, and the base includes at least one biasing member 303 fixed to the shell of the handle assembly 15, which respectively contacts and conducts electricity with the corresponding conductive area in the at least one conductive area 302 in the case of rotation of the transducer 14. Specifically, the at least one conductive area 302 provided on the housing of the transducer 14 is in the form of a ring structure. The ring structure conductive area provided on the housing of the transducer 14 can contact and conduct electricity with the biasing member 303 fixed to the shell of the handle assembly 15, which is conducive to good transmission of electrical signals. Secondly, the biasing member is fixed to the shell of the handle assembly 15, so that it can keep contact and conduct electricity with the ring-shaped conductive area provided on the housing of the transducer 14, which is simple and easy to implement, and is conducive to saving the space of the ultrasonic knife system. In some embodiments, as Figure 3 As shown, the ultrasonic knife system further includes a socket 301 provided on the proximal side of the handle assembly 15, so that the at least one biasing member 303 is electrically connected with the cable 12 via the socket 301. In the embodiment, the transducer 14 is configured as a rotatable part, and the base is realized by the at least one biasing member 303 fixed to the shell of the handle assembly 15, so that the cable 12 does not rotate with the transducer 14 when the transducer 14 rotates, solving the problems of easy entanglement of the cable during assembly and easy entanglement of the cable caused by adjustment of the direction of the blade head during use, and improving the convenience and accuracy of operation. At the same time, the base reuses the shell of the handle assembly 15, so that the structure of the entire ultrasonic knife system is more compact, and the space of the ultrasonic knife system is saved.

[0033] In particular, the at least one biasing member 303 fixed to the housing of the handle assembly 15 can be connected to the cable 12 through the socket 301, and the transducer 14 is a rotatable part. During the process of assembling the transducer 14 or disassembling the transducer 14 from the handle assembly 15 for next use, the transducer 14 can rotate relative to the at least one biasing member 303 fixed to the housing of the handle assembly 15, so that the cable winding caused by the rotation of the transducer 14 can be reduced. During the use of the ultrasonic scalpel system, the direction of the blade head is adjusted as needed to process tissues at different positions. Since the blade rod 16 is fixed to the transducer 14, and the transducer 14 is connected to the cable 12, the rotation of the blade rod 16 will drive the rotation of the transducer 14. At this time, due to the existence of the connecting device, the relative rotation between the transducer 14 and the biasing member 303 fixed to the housing of the handle assembly 15 can significantly reduce the follow-up rotation of the cable 12. The transducer 14 is reusable, and the blade rod 16 is disposable. During the process of rotating the transducer 14 to assemble or disassemble from the blade rod 16 for next use, or during the adjustment of the direction of the blade head of the ultrasonic scalpel system during use, the transducer 14 can rotate relative to the at least one biasing member 303 fixed to the housing of the handle assembly 15, and maintain the conductive path between the transducer 14 and the at least one biasing member 303 fixed to the housing of the handle assembly 15, so that the cable 12 is electrically connected to the transducer 14 through the conductive path. In this way, the problem of easy winding of the cable during the assembly and disassembly of the reusable transducer 14 can be significantly alleviated, and the reusable transducer 14 can be widely and conveniently applied in the ultrasonic scalpel system, thereby significantly reducing the cost compared with the ultrasonic scalpel system using disposable transducers. The problem of easy winding of the cable caused by the adjustment of the direction of the blade head during the use of the ultrasonic scalpel system is also significantly alleviated, the operation convenience and accuracy are improved, and the use experience of the doctor is improved.

[0034] Figure 4 A structural schematic diagram of a connecting device for an ultrasonic scalpel system according to an embodiment of the present disclosure is shown. As Figure 4As shown, at least one conductive region 302 is arranged on the housing of the transducer 14, and the conductive region is in the form of a ring structure. At least one biasing member 303 is fixed to the outer shell of the knife handle assembly 15 and can be in contact with the ring-shaped conductive region arranged on the housing of the transducer 14. At the same time, the at least one biasing member 303 arranged on the outer shell of the knife handle assembly 15 includes two parts connected to each other, wherein one part of the biasing member is in contact with the at least one conductive region 302 arranged on the housing of the transducer 14 to realize good transmission of the electrical signal, and the other part of the biasing member is fixed to the outer shell of the knife handle assembly 15. The part of the at least one biasing member 303 fixed to the outer shell of the knife handle assembly 15 is connected to the socket arranged on the proximal side of the knife handle assembly 15 through a wire, and the cable 12 is connected to the at least one biasing member 303 fixed to the knife handle assembly 15 through the socket 301. The socket 301 arranged on the proximal side of the knife handle assembly 15 is connected to the cable 12, so that the relative rotation between the transducer 14 and the biasing member does not affect the cable.

[0035] In some embodiments, as Figure 4 As shown, an insulating region 304 is arranged between adjacent conductive regions in the at least one conductive region 302, and the housing of the transducer 14 is insulated from the core of the transducer 14. The at least one conductive region 302 is electrically connected to the core of the transducer 14 through a wire. Specifically, among the at least one conductive region 302 arranged on the housing of the transducer 14, an insulating region is arranged between any two adjacent conductive regions to prevent mutual interference of signals between the conductive paths of adjacent conductive regions, so that the transmission path of the electrical signal is not affected when the direction of the knife head is adjusted during use of the ultrasonic knife system, ensuring good transmission of the electrical signal and effectively improving the precision of the entire ultrasonic knife system, which is conducive to improving the precision of operation.

[0036] Figure 5 A structural schematic diagram of an ultrasonic knife system according to an embodiment of the present disclosure is shown. As Figure 5As shown, the ultrasonic knife system can include a cable 12 providing power from the host 11 to the transducer 14, the transducer 14 and the handle assembly 15 which can accommodate a blade 16, in use, a blade head (not shown in the figure) can be extended to perform cutting and / or coagulation treatment on a target site. Among them, the blade 16 is disposable, and the transducer 14 can be reusable. In the embodiment, the base includes a sheath 501 for fixing the cable, the transducer 14 is configured as a rotatable part, the sheath 501 is fixed to the shell of the handle assembly 15 from the proximal side and is internally provided with at least one first conductive area 502, and the shell of the transducer 14 is provided with at least one second conductive area 302. In the case of rotation of the transducer 14, the at least one first conductive area 502 provided on the sheath 501 is in contact with the at least one second conductive area 302 provided on the shell of the transducer 14. Specifically, in the embodiment, the shell of the transducer 14 is provided with at least one second conductive area 302, and an insulating area is provided between any two adjacent conductive areas to prevent interference of electrical signals between adjacent conductive paths, so that the transmission path of the electrical signal is not affected when the direction of the blade head is adjusted during use of the ultrasonic knife system, ensuring good transmission of the electrical signal and facilitating improvement of the operation accuracy. At least one first conductive area 502 is provided at the corresponding position of the at least one second conductive area 302 provided on the shell of the transducer 14, and the at least one first conductive area 502 is in contact with the at least one second conductive area 302, which ensures that the transducer 14 and the cable 12 can rotate smoothly relative to each other during assembly or disassembly of the transducer 14 or during various adjustments of the blade head during use. In this way, the problem of easy entanglement of the cable during assembly and disassembly of the reusable transducer 14 can be significantly alleviated, and the reusable transducer 14 can be widely and conveniently applied in the ultrasonic knife system, thereby significantly reducing the cost compared with the ultrasonic knife system using disposable transducers. The problem of easy entanglement of the cable caused by adjustment of the direction of the blade head during use is also significantly alleviated, the operation convenience and accuracy are improved, and the user experience of the doctor is improved.

[0037] In some embodiments, the at least one first conductive area 502 and the at least one second conductive area 302 are spaced apart and have equal intervals. Specifically, the at least one second conductive area 302 provided on the transducer 14 and the at least one first conductive area 502 provided in the sheath are spaced apart and have equal intervals, so that the at least one second conductive area 302 provided on the transducer 14 and the at least one first conductive area 502 provided in the sheath are correspondingly arranged, facilitating the conductive contact between the first conductive area and the second conductive area, facilitating good signal transmission, effectively improving the accuracy of the entire ultrasonic knife system, and facilitating improvement of the operation accuracy.

[0038] In some embodiments, the outer sleeve 501 further comprises a locking member configured to lock the outer sleeve 501 to the housing of the knife handle assembly 15. By means of the locking member provided on the outer sleeve, the outer sleeve 501 can be locked to the housing of the knife handle assembly 15, and finally realize the conductive contact between the conductive area in the outer sleeve 501 and the conductive area in the transducer 14, ensuring good transmission of the electrical signal and facilitating the improvement of the accuracy of the operation. At the same time, the locking member provided on the outer sleeve 501 can be suitable for various knife handle housings of the ultrasonic knife system, and has high applicability.

[0039] The second aspect of the present disclosure provides an ultrasonic knife system, comprising a main machine 11, a cable 12 for providing power from the main machine 11 to a transducer 14, the transducer 14, a knife handle assembly 15 for accommodating a knife shaft 16, and a connecting device for the ultrasonic knife system, wherein the cable 12 and the transducer 14 are connected via the connecting device for the ultrasonic knife system. Specifically, due to the presence of the connecting device for the ultrasonic knife system, the transducer 14 can rotate relative to the cable 12 during the assembly of the transducer 14 or the disassembly of the transducer 14 from the knife shaft 16 for next use, which can reduce the cable winding caused by the rotation of the transducer 14. During the use of the ultrasonic knife system, the direction of the knife head is adjusted as needed to process tissues at different positions. Since the knife shaft 16 is fixed to the transducer 14 and the transducer 14 is connected to the cable 12, the rotation of the knife shaft 16 will drive the rotation of the transducer 14. At this time, due to the presence of the connecting device, the transducer 14 rotates relative to the cable 12, which significantly reduces the follow-up rotation of the cable 12. The transducer 14 is reusable, and the knife shaft 16 is disposable. Whether during the assembly of the transducer 14 to the knife shaft 16 or the disassembly of the transducer 14 from the knife shaft 16 for next use, or during the adjustment of the direction of the knife head during the use of the ultrasonic knife system, the transducer 14 can rotate relative to the cable 12. In this way, by connecting the connecting device for the ultrasonic knife system between the cable and the transducer, the problem of easy winding of the cable during the assembly and disassembly of the reusable transducer 14 can be significantly alleviated, which facilitates the wide and convenient application of the reusable transducer in the ultrasonic knife system, thereby significantly reducing the cost compared with the ultrasonic knife system using disposable transducers. The problem of easy winding of the cable caused by the adjustment of the direction of the knife head during use is also significantly alleviated, which improves the convenience and accuracy of the operation and improves the use experience of the doctor. In the present embodiment, the specific structure of the connecting device is as shown in the foregoing embodiments, which will not be repeated here.

[0040] Furthermore, although illustrative embodiments are described herein, the scope includes any and all embodiments having equivalent elements, modifications, omissions, combinations (e.g., of

[0041] The foregoing description is intended to be illustrative and not exclusive. For example, the above-described examples (or one or more aspects thereof) can be used in combination with each other. Those of ordinary skill in the art, having the benefit of the above description, can employ other embodiments. Moreover, in the detailed description herein, various features can be grouped together or separated into packages for the purpose of streamlining the disclosure. This should not be interpreted as intending that the claimed disclosure requires features to be grouped together. Rather, inventive subject matter can reside in less than all features of a single disclosed embodiment. Accordingly, the following claims are hereby incorporated into the detailed description, by way of example, or embodiment, wherein each claim is independently a separate embodiment, and the embodiments can be combined or substituted in various combinations or permutations. The scope of the application should be determined by reference to the appended claims and their full scope of equivalents.

Claims

1. An ultrasonic surgical instrument, characterized in that, The device includes an ultrasonic waveguide assembly, a tool holder assembly, and a detachable transducer mounted on the tool holder assembly. The transducer is acoustically connected to the ultrasonic waveguide assembly. The transducer receives electrical energy from the host computer via a cable and converts it into ultrasonic energy to drive the ultrasonic waveguide assembly. A conductive path is formed between the cable and the transducer via a connecting device located at the proximal end, distal end, or between the proximal and distal ends of the transducer. The connecting device includes: The base is configured to be electrically connected to one of the cable and the transducer; A rotatable part is configured to be electrically connected to the cable and another of the transducers, and is rotatable relative to the base; The base is provided with a contact component, and the rotatable part is provided with a conductive area for forming an electrical connection with the contact component. When the rotatable part rotates relative to the base, the contact component moves within the conductive area and maintains an electrical connection with the conductive area, so as to maintain a conductive path between the cable and the transducer. In this configuration, the rotatable part rotates actively while the base moves accordingly, or the base rotates actively while the rotatable part moves accordingly. The rotation value of the moving part is lower than a threshold value, which is determined by the model and service life of the ultrasonic surgical instrument, so that the ultrasonic scalpel system will not experience cable entanglement.

2. The ultrasonic surgical instrument according to claim 1, characterized in that, At least one conductive region is provided on the rotatable part, and the contact assembly includes at least one biasing member corresponding to the at least one conductive region. When the rotatable part rotates relative to the base, the at least one biasing member remains in contact with the conductive region corresponding to the at least one conductive region.

3. The ultrasonic surgical instrument according to claim 2, characterized in that, The rotatable part and the base part are respectively constructed as two annular parts with inner and outer sleeves. The at least one conductive area is disposed circumferentially on the outer periphery of the rotatable part and is electrically connected to the cable via a first output line. The at least one biasing member extends inward from the inner periphery of the base part to form a contact connection with the corresponding conductive area and is electrically connected to the transducer via a second output line.

4. The ultrasonic surgical instrument according to claim 2 or 3, characterized in that, The at least one conductive region includes a plurality of circumferentially extending conductive regions that are separated along the longitudinal direction of the rotatable part.

5. The ultrasonic surgical instrument according to claim 1, characterized in that, The transducer is configured as the rotatable part, and at least one conductive area is provided on the housing of the transducer. The contact assembly includes at least one biasing member fixed to the housing of the tool holder assembly. When the transducer rotates, the at least one biasing member contacts and conducts electricity with the corresponding conductive area in the at least one conductive area.

6. The ultrasonic surgical instrument according to claim 5, characterized in that, It also includes a socket disposed near the handle assembly so that the at least one biasing member is electrically connected to the cable via the socket.

7. The ultrasonic surgical instrument according to claim 5, characterized in that, An insulating region is provided between adjacent conductive regions in the at least one conductive region, the housing of the transducer is insulated from the core of the transducer, and the at least one conductive region is electrically connected to the core of the transducer via a wire.

8. The ultrasonic surgical instrument according to claim 1, characterized in that, The base includes a jacket for securing the cable, the transducer is configured as the rotatable portion, the jacket is secured from the proximal side to the housing of the handle assembly, the contact assembly includes at least one second conductive region disposed within the housing, and the housing of the transducer is provided with at least one first conductive region, wherein when the transducer rotates, the at least one first conductive region disposed on the jacket contacts and conducts electricity with the at least one second conductive region disposed on the housing of the transducer.

9. The ultrasonic surgical instrument according to claim 8, characterized in that, The at least one first conductive region and the at least one second conductive region are spaced apart, and the spacing between them is equal.

10. The ultrasonic surgical instrument according to claim 8, characterized in that, It also includes a locking element configured to lock the outer sleeve to the housing of the handle assembly.

11. An ultrasonic surgical system, comprising a main unit and ultrasonic surgical instruments according to any one of claims 1-10, wherein, The host is electrically connected to the transducer of the ultrasonic surgical instrument via a cable and through the connection device of the ultrasonic surgical instrument.

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