CN210871900U - Ultrasonic scalpel transducer and surgical instrument - Google Patents

Abstract

The embodiment of the application discloses an ultrasonic scalpel transducer and a surgical instrument. The ultrasonic scalpel transducer comprises a torsional longitudinal vibration ultrasonic generator and a cutter bar, wherein the torsional longitudinal vibration ultrasonic generator is used for simultaneously generating torsional vibration and longitudinal vibration ultrasonic waves, the torsional longitudinal vibration ultrasonic generator comprises an amplitude transformer and an ultrasonic wave generating device, the cutter bar is arranged on the amplitude transformer, and the center of gravity of the ultrasonic scalpel transducer is arranged on the central axis of the ultrasonic scalpel transducer. This application embodiment can make ultrasonic scalpel transducer export torsional vibration and the ultrasonic wave of the form of vertically shaking simultaneously, the focus of ultrasonic scalpel transducer can be so that the ultrasonic wave has improved ultrasonic transmission's efficiency along transmission medium's axial propagation on the center axis of ultrasonic scalpel transducer.

Description

Ultrasonic scalpel transducer and surgical instrument

Technical Field

The embodiment of the application relates to the technical field of medical instruments, in particular to an ultrasonic scalpel transducer and a surgical instrument.

Background

Currently, most ultrasonic surgical systems operate in a longitudinal (or axial) vibration mode, i.e., when the ultrasonic surgical blade is in operation, the ultrasonic transducer vibrates longitudinally, and the distal tool tip reciprocates along the axial direction with an amplitude of 0-150 microns. This longitudinal vibration mode is often inefficient in certain applications, such as cutting hard human tissue, bones, stones, cataracts, and the like.

In order to improve the diversity of the ultrasonic vibration modes, the existing ultrasonic transducer realizes single torsional vibration ultrasonic wave by adding an auxiliary driving device or changing the center of gravity of the transducer by increasing or reducing the mass of a structural member. And since the center of mass of the ultrasonic waves is offset from the geometric center axis of the transducer and/or transmission medium during output and transmission, the service life is greatly reduced. In addition, the conversion efficiency during the ultrasonic transmission is low, and most of the energy is converted into heat energy and lost.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an ultrasonic scalpel transducer and a surgical instrument, which are used for solving the technical problems mentioned in the background technology.

In a first aspect, an embodiment of the present application provides an ultrasonic scalpel transducer, which includes a torsional longitudinal vibration ultrasonic generator 101 and a tool bar 102, where the torsional longitudinal vibration ultrasonic generator 101 is configured to generate torsional vibration and longitudinal vibration ultrasonic waves at the same time, the torsional longitudinal vibration ultrasonic generator 101 includes an amplitude transformer 1011 and an ultrasonic generation device 1012, the tool bar 102 is disposed on the amplitude transformer 1011, and a center of gravity of the ultrasonic scalpel transducer is on a central axis of the ultrasonic scalpel transducer.

In some embodiments, the ultrasonic wave generating device 1012 includes at least one of: a longitudinal vibration ultrasonic wave generator 10121 and a torsional vibration ultrasonic wave generator 10122.

In some embodiments, the horn 1011 has a helical configuration disposed thereon about the central axis of the ultrasonic scalpel transducer.

In some embodiments, the torsional-longitudinal-vibration ultrasonic generator 101 comprises a front body 1013 and a back body 1014, wherein the ultrasonic generator 1012 is disposed between the front body 1013 and the back body 1014, and the front body 1013 is provided with a spiral structure having a central axis of the ultrasonic-surgical-blade transducer as a rotation axis.

In some embodiments, tool holder 102 is integrally formed with horn 1011, or is attached thereto, by at least one of: and (4) screwing and welding.

In some embodiments, the ultrasonic torsional vibration generator 101 and the tool holder 102 are hollow or solid structures.

In a second aspect, embodiments of the present application provide a surgical instrument, including: an ultrasonic scalpel main body 401, an excitation switch 402 and an ultrasonic scalpel handle 403, wherein the ultrasonic scalpel transducer described in any one of the embodiments of the first aspect is disposed on the ultrasonic scalpel handle 403, and the ultrasonic scalpel main body 401 is connected to the excitation switch 402 and the ultrasonic scalpel handle 403 respectively.

The embodiment of the application provides an ultrasonic scalpel transducer and surgical instrument, through set up torsional longitudinal vibration supersonic generator on ultrasonic scalpel transducer, make ultrasonic scalpel transducer can export the ultrasonic wave of torsional vibration and longitudinal vibration form simultaneously, and simultaneously, the focus of ultrasonic scalpel transducer is on the center axis of ultrasonic scalpel transducer, can make the ultrasonic wave propagate along the axial of transmission medium, the efficiency of ultrasonic transmission has been improved, the damage of the tool and the influence to the operation effect that set up the focus into deviating the central axis and leading to in prior art have been avoided.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1 is a schematic structural diagram of one embodiment of an ultrasonic surgical blade transducer according to the present application;

FIG. 2 is a schematic view of an exemplary configuration of a longitudinal vibration ultrasonic wave generation device and a torsional vibration ultrasonic wave generation device according to the present application;

FIG. 3 is a schematic view of a hollow structure of an ultrasonic scalpel transducer according to the present application;

FIG. 4 is a schematic structural diagram of an embodiment of a surgical instrument according to the present application.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the relevant portions of the related inventions are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

FIG. 1 shows a schematic structural diagram of one embodiment of an ultrasonic surgical blade transducer of the present application. As shown in fig. 1, the ultrasonic scalpel transducer 100 includes a torsional-longitudinal vibration ultrasonic generator 101 and a tool bar 102, wherein the torsional-longitudinal vibration ultrasonic generator 101 is used for simultaneously generating torsional vibration and longitudinal vibration ultrasonic waves, the torsional-longitudinal vibration ultrasonic generator 101 includes an amplitude transformer 1011 and an ultrasonic wave generating device 1012, the tool bar 102 is disposed on the amplitude transformer 1011, and the center of gravity of the ultrasonic scalpel transducer is on the central axis of the ultrasonic scalpel transducer.

The horn 1011 is used to amplify the amplitude of the ultrasonic wave, i.e., to convert the large-diameter structure of the ultrasonic generator into the small-diameter structure of the tool bar 102, so that the efficiency of the operation can be improved. The ultrasonic wave generating device 1012 may be used to convert electrical energy into ultrasonic vibration energy. Generally, the ultrasonic wave generating device 1012 may be a stack of piezoelectric ceramic crystals.

The existing ultrasonic transducer capable of generating torsional vibration and longitudinal vibration simultaneously adopts the mode that a counterweight is added on the ultrasonic transducer or a part of mass is removed from the ultrasonic transducer, so that the gravity center of the ultrasonic transducer deviates from the central axis, and torsional vibration ultrasonic waves can be generated simultaneously when an ultrasonic generator for generating longitudinal vibration is used.

In the present embodiment, the torsional-longitudinal-vibration ultrasonic generator 101 and the tool holder 102 are provided as a solid-of-revolution structure without deviating the center of gravity from the central axis.

In some optional implementations of this embodiment, the ultrasonic wave generating device 1012 includes at least one of: a longitudinal vibration ultrasonic wave generator 10121 and a torsional vibration ultrasonic wave generator 10122. As shown in fig. 2, the ultrasonic wave generating means 1012 may include a longitudinal vibration ultrasonic wave generating means 10121 and a torsional vibration ultrasonic wave generating means 10122, so that longitudinal vibration ultrasonic waves and torsional vibration ultrasonic waves may be simultaneously generated by the two ultrasonic wave generating means 1012. The longitudinal ultrasonic wave generator 10121 and the torsional ultrasonic wave generator 10122 may be directly connected or indirectly connected, for example, the longitudinal ultrasonic wave generator 10121 and the torsional ultrasonic wave generator 10122 are connected by an ultrasonic wave conductive block. The ultrasonic wave generating means 1012 can generate vibration waves of both longitudinal vibration and torsional vibration, as indicated by arrows in fig. 2.

In some alternative implementations of this embodiment, as shown in fig. 1, the horn 1011 has a spiral structure with the central axis of the ultrasonic scalpel transducer as the rotation axis. The helical structure may be an equidistant helical structure or a variable pitch helical structure, and the embodiment of the present application is not limited. By providing the horn 1011 with a helical structure, part of the longitudinal vibration wave can be converted into torsional vibration wave at the time of longitudinal vibration. Or, in the case of torsional vibration, a part of the torsional vibration wave is converted into a longitudinal vibration wave. Thereby realizing the effect of simultaneously generating longitudinal vibration waves and torsional vibration waves. Note that, when the above-described spiral structure is adopted, the ultrasonic wave generating means 1012 may include only the longitudinal vibration ultrasonic wave generating means in general. Alternatively, when the above-described spiral structure is employed, the ultrasonic wave generating means 1012 may also include only torsional ultrasonic wave generating means, or may include both longitudinal ultrasonic wave generating means and torsional ultrasonic wave generating means.

In some optional implementations of this embodiment, as shown in fig. 1, the torsional-longitudinal-vibration ultrasonic generator 101 includes a front body 1013 and a back body 1014, wherein the ultrasonic generator 1012 is disposed between the front body 1013 and the back body 1014, and the front body 1013 is provided with a spiral structure using a central axis of the ultrasonic scalpel transducer as a rotation axis. The front body 1013 and the rear body 1014 are used to fix the ultrasonic wave generating means 1012, and at the same time, the front body 1013 can transmit ultrasonic wave energy to the horn 1011. It should be understood that the helical structure on the precursor 1013 in this implementation can be combined with the helical structure on the horn 1011 in the above implementation to further convert more longitudinal vibration waves (or torsional vibration waves) into torsional vibration waves (or longitudinal vibration waves), thereby further improving the efficiency of outputting the longitudinal vibration waves and the torsional vibration waves.

In some alternative implementations of this embodiment, the tool holder 102 is a unitary structure with the horn 1011. By arranging the cutter bar 102 and the amplitude transformer 1011 into an integrally formed structure, the ultrasonic energy loss at the joint of the cutter bar 102 and the amplitude transformer 1011 can be avoided, and the transmission efficiency of the ultrasonic energy is improved. In addition, tool holder 102 and horn 1011 can be separate components that can be connected in a variety of ways including, but not limited to, at least one of: threaded connections, welding, etc.

In some alternative implementations of this embodiment, the ultrasonic torsional vibration generator 101 and the tool holder 102 may be hollow structures, as shown in the cross-sectional view of fig. 3. The hollow structure can be used for infusing liquid or gas to the tissue in the operation process or sucking the liquid or gas from the tissue, thereby enriching the functions of the transducer and improving the operation efficiency. Further, the torsional-longitudinal-vibration ultrasonic generator 101 and the tool holder 102 may also be of solid construction. The strength of the transducer can be increased.

The ultrasonic scalpel transducer that above-mentioned embodiment of this application provided, through set up torsional longitudinal vibration supersonic generator on ultrasonic scalpel transducer for ultrasonic scalpel transducer can export torsional vibration and the ultrasonic wave of longitudinal vibration form simultaneously, and simultaneously, the focus of ultrasonic scalpel transducer is in on the center axis of ultrasonic scalpel transducer, can be so that the ultrasonic wave propagates along the axial of transmission medium, improved ultrasonic transmission's efficiency, avoided among the prior art to set up the focus into the damage of deviating the center axis and leading to the cutting tool and the influence to the operation effect.

With further reference to fig. 4, a schematic structural diagram of one embodiment of a surgical instrument 400 of the present application is shown. The surgical instrument 400 includes: the ultrasonic scalpel comprises an ultrasonic scalpel main body 401, an excitation switch 402 and an ultrasonic scalpel handle 403, wherein the ultrasonic scalpel transducer described in the embodiment shown in fig. 1 is arranged on the ultrasonic scalpel handle, and the ultrasonic scalpel main body 401 is respectively connected with the excitation switch 402 and the ultrasonic scalpel handle 403.

The surgical instrument provided by the above embodiment of the present application, by introducing the ultrasonic scalpel transducer described in the embodiment shown in fig. 1, can enable the ultrasonic scalpel transducer to simultaneously output ultrasonic waves in torsional vibration and longitudinal vibration modes, and simultaneously enable the ultrasonic waves to axially propagate along a transmission medium, thereby improving the efficiency of ultrasonic transmission, and avoiding the damage to the scalpel and the influence on the surgical effect caused by setting the center of gravity to deviate from the central axis in the prior art.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (7)

1. An ultrasonic scalpel transducer, comprising: the ultrasonic surgical knife comprises a torsional longitudinal vibration ultrasonic generator (101) and a knife bar (102), wherein the torsional longitudinal vibration ultrasonic generator (101) is used for simultaneously generating torsional vibration and longitudinal vibration ultrasonic waves, the torsional longitudinal vibration ultrasonic generator (101) comprises an amplitude transformer (1011) and an ultrasonic generating device (1012), the knife bar (102) is arranged on the amplitude transformer (1011), and the center of gravity of the ultrasonic surgical knife transducer is located on the central axis of the ultrasonic surgical knife transducer.

2. The ultrasonic scalpel transducer of claim 1, wherein the ultrasonic wave generating device (1012) comprises at least one of: a longitudinal vibration ultrasonic wave generating device (10121) and a torsional vibration ultrasonic wave generating device (10122).

3. The ultrasonic scalpel transducer of claim 1, wherein the horn (1011) has a helical configuration with a central axis of the ultrasonic scalpel transducer as an axis of rotation.

4. An ultrasonic scalpel transducer as claimed in claim 3, wherein the torsional-longitudinal-vibration ultrasonic generator (101) comprises a front body (1013) and a back body (1014), wherein the ultrasonic generating means (1012) is arranged between the front body (1013) and the back body (1014), and wherein the front body (1013) is provided with a helical structure having a central axis of the ultrasonic scalpel transducer as a rotation axis.

5. The ultrasonic surgical blade transducer of claim 1, wherein the blade bar (102) and the horn (1011) are integrally formed or connected by at least one of: and (4) screwing and welding.

6. An ultrasonic surgical blade transducer according to any one of claims 1 to 5, wherein the torsional longitudinal vibration ultrasonic generator (101) and the blade holder (102) are of hollow or solid construction.

7. A surgical instrument, characterized in that the surgical instrument comprises: an ultrasonic scalpel host (401), an excitation switch (402) and an ultrasonic scalpel handle (403), wherein the ultrasonic scalpel transducer according to any one of claims 1-6 is disposed on the ultrasonic scalpel handle (403), and the ultrasonic scalpel host (401) is connected to the excitation switch (402) and the ultrasonic scalpel handle (403), respectively.

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