CN115040203A - Ultrasonic surgical instrument - Google Patents

Abstract

The invention relates to an ultrasonic surgical instrument, which comprises a handle component, a cutter bar component and an energy converter component, wherein the handle component comprises a first handle and a second handle which are pivoted to form a scissors structure; the cutter bar component comprises a cutter bar arranged in the second handle and an ultrasonic cutter head which is arranged at the front end of the cutter bar and penetrates out of the front end of the second handle to be abutted against the first handle; a circuit board is also arranged in the second handle, and a plurality of keys which are forward and integrated into a whole are arranged below the second handle; the transducer assembly comprises a transducer shell detachably connected with the second handle, a transducer and a cable, wherein the transducer and the cable are installed in the transducer shell, and the front end of the transducer is in threaded connection with the cutter bar. The energy converter is made into a detachable part, so that waste can be effectively avoided, the use cost is reduced, the arrangement of the keys is changed, and foreign matters can be effectively prevented from falling into gaps among the buttons in the use process.

Description

Ultrasonic surgical instrument

Technical Field

The invention relates to a medical instrument, in particular to an ultrasonic surgical instrument.

Background

Ultrasonic surgical instruments that vibrate at ultrasonic frequencies to cut and seal tissue include piezoelectric ceramics that are electrically converted to ultrasonic vibrations that are transmitted to a cutting head with an acoustic waveguide, with the cutting efficiency being regulated by the surgeon. However, in the existing ultrasonic surgical instrument, the energy converter part of the scalpel and the scalpel head are fixed together and cannot be detached, and if a single energy converter fails, only the whole scalpel can be replaced, so that the cost is wasted; meanwhile, due to the fact that foreign matters are prone to falling into the keys, the functions of the keys can be affected, and operation risks are increased.

Disclosure of Invention

Aiming at the existing defects, the invention provides an ultrasonic surgical instrument.

The technical scheme adopted by the invention for solving the technical problems is as follows: an ultrasonic surgical instrument comprises a handle component, a cutter bar component and a transducer component, wherein the handle component comprises a first handle and a second handle, the second handle is internally provided with a containing cavity, and the first handle is pivoted above the second handle and forms a scissors structure with the second handle; the cutter bar assembly comprises a cutter bar arranged in the accommodating cavity and an ultrasonic cutter head arranged at the front end of the cutter bar and penetrating out of the front end of the second handle to be abutted against the first handle; a circuit board is further installed in the accommodating cavity, and a plurality of forward keys which are electrically connected with the circuit board and are of an integral structure are installed below the second handle; the energy converter assembly comprises an energy converter shell which is detachably and hermetically connected with the second handle, an energy converter which is arranged in the energy converter shell and can be electrically connected with the circuit board, and a cable which is electrically connected with the energy converter, penetrates out of the energy converter shell and is hermetically connected to the energy converter shell, wherein the front end of the energy converter penetrates out of the energy converter shell and is in threaded connection with the cutter bar; and a first buffer layer is arranged at the joint of the cutter bar and the second handle.

Preferably, the transducer comprises a transducer body and an amplitude transformer which is arranged in the transducer body, and the front end of the amplitude transformer penetrates out of the transducer shell and is in threaded connection with the cutter bar.

Preferably, the transducer housing comprises a front shell, a middle shell and a rear shell which are sequentially detachably and hermetically connected from the front end to the rear end, the front parts of the front shell and the middle shell are detachably mounted in the accommodating cavity, and the amplitude transformer penetrates out of the front end of the front shell and is in threaded connection with the cutter bar.

Preferably, the horns are provided with cushions at the contact positions with the transducer housing.

Preferably, the cutter bar is installed in the accommodating cavity through a rotating shaft with two ends correspondingly connected to the wall of the accommodating cavity, the cutter bar is sleeved on the rotating shaft, the axis of the rotating shaft is perpendicular to the axis line of the first handle and the second handle, and the outer surface of the rotating shaft is wrapped with the first buffer layer.

Preferably, the keys are provided in two and are mounted on the second handle at an acute forward angle to the second handle.

Preferably, a plurality of handle through holes with the same number of keys are arranged in front of the lower portion of the second handle, a mounting frame is arranged in the containing cavity, the keys are mounted on the mounting frame and correspond to the handle through holes one to one, and the circuit board is also arranged on the mounting frame and provided with an electric connector which can be electrically connected with the transducer.

Preferably, the second handle comprises a handle cover, a pivot shell and a handle blade shell, the handle cover, the pivot shell and the handle blade shell are sequentially connected in a sealing mode from the front end to the rear end, the pivot shell is pivoted with the first handle, the transducer shell is detachably connected with the handle blade shell, the circuit board is installed in the handle blade shell, the tail end of the cutter bar is in threaded connection with the transducer in the handle blade shell, the button is arranged at a position, close to the front end of the handle blade shell, outside the handle blade shell, the ultrasonic cutter head penetrates out of the front end of the handle cover, a protrusion extends upwards from the outer wall of the pivot shell, and the first handle is pivoted with the protrusion.

Preferably, a second buffer layer is arranged between the cutter bar and the pivot shell as well as between the cutter bar and the handle cover.

Preferably, the surface of the front end of the first handle opposite to the ultrasonic cutter head is provided with a clamping pad.

The invention has the beneficial effects that: the transducer assembly is made into a whole, the handle assembly and the cutter bar assembly form another whole, the two whole forms a detachable structure, and only a single cutter head or a transducer needs to be replaced under the condition of failure, so that waste can be effectively avoided, and the use cost is reduced; meanwhile, the arrangement of the keys is changed, and the keys are arranged at the front lower part of the handle assembly, so that foreign matters can be effectively prevented from falling into gaps among the keys in the using process, and the handle assembly is clean; the plurality of buttons are of an integrated structure, the structure is simple, excessive parts are reduced, and the reliability of the handle is improved; the sealing connection among all the parts ensures that water does not seep in the sterilization and cleaning process, and the surface can be continuously used after being dried.

Drawings

FIG. 1 is a schematic cross-sectional structural view of an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of A in FIG. 1 according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of a rotating shaft according to an embodiment of the present invention;

FIG. 5 is an exploded view of a transducer housing according to an embodiment of the invention;

FIG. 6 is an exploded view of a second handle according to an embodiment of the present invention;

part names and serial numbers in the figure: 1-a first handle 10-a second handle 11-a clamping pad 100-a handle cover 101-a pivoting shell 102-a handle knife shell 1010-a protrusion 2-a knife rod 20-an ultrasonic knife head 21-a rotating shaft 3-a circuit board 4-a key 40-a mounting rack 41-an electric connection joint 5-a transducer shell 50-a transducer 51-a cable 52-a front shell 53-a middle shell 54-a rear shell 500-a transducer body 501-an amplitude transformer 6-a first buffer layer.

Detailed Description

To more clearly illustrate the objects, technical solutions and advantages of the embodiments of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and embodiments, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without inventive step, are within the scope of the present invention. In addition, directional terms used in the present invention, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., refer to directions only as shown in the attached drawings, and are used for better and clearer explanation and understanding of the present invention, and do not indicate or imply orientation which the present invention must have, and thus, should not be construed as limiting the present invention.

Embodiments of the present invention as shown in figures 1-6, an ultrasonic surgical instrument includes a handle assembly, a blade bar assembly, a transducer assembly, the handle component comprises a first handle 1 and a second handle 10 with an accommodating cavity arranged inside, the first handle 1 is pivoted above the second handle 10 and forms a scissors structure with the second handle 10, the two handles form the scissors structure and can rotate relatively to play a role in clamping, so that the clamping in an operation is facilitated, as shown in fig. 1, the front ends of the two handles face to the right, the first handle 1 is above the second handle 10, the first handle 1 becomes a thumb grip corresponding to the thumb part, the second handle 10 becomes a finger grip corresponding to the other fingers, they may be provided in different shapes, depending on the requirements of use, for example, a pistol grip configuration, in which the housing cavity in the second handle 10 may house the other components of the instrument; the cutter bar component comprises a cutter bar 2 arranged in the accommodating cavity and an ultrasonic cutter head 20 which is arranged at the front end of the cutter bar 2 and penetrates out of the front end of the second handle 10 to be abutted against the first handle 1, namely the cutter bar 2 is connected to the second handle 10 in the accommodating cavity, the ultrasonic cutter head 20 is arranged at the front end of the cutter bar 2 and penetrates out of the front end of the second handle 10, the first handle 1 rotates towards the second handle 10 to be closed when in use, the ultrasonic cutter head 20 is abutted against the front end of the first handle 1 to clamp tissues, and when the first handle 1 is far away from the second handle 10, the two handles are opened to release the clamping of the tissues; the circuit board 3 is also arranged in the accommodating cavity, the plurality of keys 4 which are electrically connected with the circuit board 3 and are of an integral structure are arranged forwards below the second handle 10, namely the plurality of keys 4 are of an integral structure, so that excessive parts required for installing each key 4 are reduced, the problem that foreign matters enter the accommodating cavity from the space between the plurality of keys 4 is avoided after the plurality of keys 4 are arranged on the second handle 10, the reliability of the handle is improved, the keys 4 are arranged below the second handle 10 and face the front end of the second handle 10, namely the keys 4 are arranged below the second handle 10, namely the keys 4 are also positioned below the cutter bar 2, and in the using process, the gaps between the plurality of keys 4 face downwards, so that the foreign matters can be effectively prevented from falling into the gaps between the keys 4, and the cleaning is good, the risk of the failure of the instrument is further reduced, and the circuit board 3 can be arranged at a position adjacent to the key 4 in the accommodating cavity, so that the connecting circuit structure between the circuit board and the key 4 is reduced, and the influence on the transducer assembly is further reduced; the transducer assembly comprises a transducer shell 5 detachably connected with the second handle 10, a transducer 50 arranged in the transducer shell 5 and electrically connected with the circuit board 3, and a cable 51 which is electrically connected with the transducer 50, penetrates out of the transducer shell 5 and is hermetically connected to the transducer shell 5, the front end of the transducer 50 penetrates out of the transducer shell 5 to be in threaded connection with the cutter bar 2, so that the transducer assembly is arranged into an independent individual body, the transducer assembly and the cutter bar assembly can be conveniently disassembled and assembled by the detachable connection of the transducer shell 5 and the second handle 10, the transducer assembly becomes a detachable part, when the instrument has problems, the cutter bar assembly or the transducer assembly can be replaced according to the problems, the waste can be effectively avoided, the use cost is reduced, and the problem that the transducer and the cutter head in the existing instrument can not be detached together when fixed is solved, at this time, the transducer housing 5 and the second handle 10 can be connected in a sealing manner, the sealing can prevent water from entering the accommodating cavity of the second handle 10 to damage the circuit board 3 therein, the sealing can be realized by adopting a sealing ring, one part of the cable 51 is positioned in the transducer housing 5, the other part is positioned outside the transducer housing 5, the cable 51 is sealed at the outlet of the transducer housing 51 by using a sealing glue to realize the waterproof function, the cable 51 positioned outside the transducer housing 5 is connected with a generator, the threaded connection of the front end of the transducer 50 and the cutter bar 2 is also convenient for the assembly and disassembly of the transducer assembly, the electrical connection of the transducer 50 and the circuit board 3 can adopt any one of the existing detachable structures which are in contact with each other and are in electric communication after the assembly, for example, a probe needle head is arranged on the circuit board 3, and an annular conducting strip which is electrically connected with the transducer 50 is arranged on the transducer housing 5, after the transducer assembly is mounted on the second handle 10, the probe tip abuts against the annular conductive sheet to form an electrical communication path; the transducer assembly is made into a whole by the structure, the handle assembly and the cutter bar assembly form another whole, the two whole bodies form a detachable structure, and only a single cutter head or a transducer needs to be replaced under the condition that the two whole bodies break down, so that waste can be effectively avoided, and the use cost is reduced.

In a further improvement, as shown in fig. 1, the transducer 50 comprises a transducer body 500, and a horn 501 which is installed in the transducer body 500 and the front end of which penetrates out of the transducer housing 5 and is in threaded connection with the cutter bar 2, wherein the horn 501 amplifies the displacement or speed of mechanical vibration by focusing ultrasonic energy on a smaller area, and pushes the cutter head to work and radiate energy to local tissues of a human body through the amplification and coupling action of the horn 501. In order to facilitate the installation of the transducer body 500 and the horn 501 in the transducer housing 5, the transducer housing 5 comprises a front shell 52, a middle shell 53 and a rear shell 54 which are sequentially and detachably connected in a sealing manner from the front end to the rear end, the front parts of the front shell 52 and the middle shell 53 are detachably installed in a containing cavity, the transducer housing 5 is divided into three parts for assembly, each two connected parts are connected in a sealing manner, sealing is realized by adopting a sealing ring, so that the transducer is free from water seepage in the sterilization and cleaning process, the transducer can be continuously used after surface drying treatment, the front shell 52 is completely arranged in the containing cavity of the second handle 10, the part of the middle shell 53 is arranged in the containing cavity, the tail part of the horn 52 is provided with piezoelectric ceramics and is installed in the transducer body 500 through a locking nut, the whole formed by the transducer body 500 and the horn 501 is installed in the transducer housing 5, the amplitude transformer 501 penetrates out of the front end of the front shell 52 and is in threaded connection with the cutter bar 2, and a through hole through which the amplitude transformer 501 penetrates is formed in the front end of the corresponding front shell 52. The contact position of the amplitude transformer 501 and the transducer shell 5 is provided with buffer pads, the buffer pads are used for reducing the loss of the vibration energy of the amplitude transformer 501, and ensuring the normal vibration of the amplitude transformer 501, at the moment, the buffer pads adopt silica gel pads, the position of the amplitude transformer 501 in the transducer shell 5 is set according to the sizes of the front shell 52, the middle shell 53 and the rear shell 54, when the amplitude transformer 501 is simultaneously positioned in the three shells, the buffer pads are respectively arranged at the positions which are contacted with the amplitude transformer 501 in the three shells, when the amplitude transformer 501 is positioned in the front shell 52 and the middle shell 53, the buffer pads are arranged at the positions which are contacted with the amplitude transformer 501 in the front shell 52 and the middle shell 53, if the amplitude transformer 501 in the through hole of the front shell 52 is contacted with the front shell 52, the buffer pads are arranged in the through hole, and the amplitude transformer 501 is of a certain length, in order to stabilize the structure installed in the transducer shell 5, a structure for supporting the horn is provided, for example, the front end of the middle shell 53 is provided with a middle shell through hole through which the matching horn 501 penetrates, the horn 501 is installed in the middle shell through hole in a matching manner, the middle shell 53 is utilized to form a supporting point, a cushion pad is correspondingly installed in the middle shell through hole, and the cushion pad is correspondingly arranged according to the contact structure of the horn 7 and the transducer shell 6.

A further improvement is that as shown in fig. 1 and 4, the tool bar 2 is installed in the accommodating cavity through a rotating shaft 21 with two ends correspondingly connected to the wall of the accommodating cavity, the tool bar 2 is sleeved on the rotating shaft 21, the axis of the rotating shaft 21 is perpendicular to the axis line of the first handle 1 and the second handle 10, that is, the tool bar 2 is sleeved on the rotating shaft 21, then two ends of the rotating shaft 21 are correspondingly connected to the wall of the accommodating cavity, that is, connected to the second handle 10, as shown in fig. 1, the axis line of the first handle 1 and the second handle 10 hinged to each other is in the front-back direction, the first handle 1 can rotate relative to the second handle 10, that is, move close to or away from each other in the vertical direction, the axis line of the rotating shaft is in the vertical direction, the tool bar 2 can move up and down relative to the rotating shaft in vibration, thereby ensuring the normal operation of the tool bar, the surface parcel of pivot 21 has first buffer layer, and the relative pivot displacement from top to bottom and the energy loss that causes when just so having reduced the cutter arbor vibration, this buffer layer can reduce the influence that the second handle produced the cutter arbor vibration and the energy loss that causes through the buffer layer with elastic deformation's silica gel pad.

In a further improvement, as shown in fig. 1, 3, 4 and 6, the two buttons 4 are arranged and mounted on the second handle 10 in a manner of forming an acute angle forward with the second handle 10, that is, the buttons 4 are arranged in a state of being inclined downward from the rear to the front under the second handle 10, that is, in a position where the index finger and the middle finger can be pressed after holding the second handle 10 by hand, the use is more convenient, and the structure is not easy to drop foreign matters at the buttons, and is also convenient to clean.

As shown in fig. 1 to 6, for the arrangement of the keys 4 on the second handle 10, a plurality of handle through holes with the same number as the keys are arranged in front of the lower portion of the second handle 10, that is, the handle through holes are arranged obliquely forward and downward, several keys 4 are arranged, several handle through holes are arranged on the second handle 10, one handle through hole corresponds to one key 4, the mounting frame 40 is arranged in the accommodating cavity, the keys 4 are arranged on the mounting frame 40 and correspond to the handle through holes one by one, the mounting frame 40 is fixedly arranged in the accommodating cavity, that is, arranged in the second handle 10, at this time, the keys 4 arranged on the mounting frame 40 can partially penetrate through the handle through holes to be pressed conveniently, or can be pressed only by exposing the keys through the handle through holes without penetrating through the handle through holes, the circuit board 3 is also arranged on the mounting frame 40 and is provided with a circuit board 3 capable of being electrically connected with the transducer 50 The electrical connection joint 41 facilitates the connection between the circuit board 3 and the key 4, and the electrical connection joint 41 may adopt a structure that can maintain electrical connection during the existing rotation, such as a probe, and an annular conductive sheet that can form electrical connection with the probe is correspondingly arranged on the transducer.

In a further improvement, as shown in fig. 1 and 6, the second handle 10 comprises a handle cover 100, a pivot joint shell 101 and a handle blade shell 102 which are connected in a sealing manner from the front end to the rear end in sequence, so that the installation of each component in the second handle 10 is facilitated, the transducer housing 5 and the handle blade shell 102 are detachably connected, the circuit board 3 is installed in the handle blade shell 102, the tail end of the cutter bar 2 is connected with the transducer 50 in the handle blade shell 102 in a threaded manner, that is, the tail end of the cutter bar 2 is connected with the transducer 50 in the handle blade shell 102, the handle cover 100 and the pivot joint shell 101 only correspond to the cutter bar 2 and the ultrasonic cutter head 20, the structure of the pivot joint shell 101 and the handle cover 100 is simplified, the pivot joint shell 101 and the handle cover 100 form a jaw part of the instrument, the push button 4 is arranged outside the handle blade shell 102 at a position adjacent to the front end of the handle blade shell 102, the ultrasonic scalpel head 20 penetrates out of the front end of the handle cover 100, a protrusion 1010 extends upwards from the outer wall of the pivoting shell 101, and the first handle 1 and the protrusion 1010 are pivoted to facilitate rotation between the first handle 1 and the second handle 10. All be provided with the second buffer layer between cutter arbor 2 and pin joint shell 101 and handle lid 100, the second buffer layer just sets up in the position that cutter arbor 2 and their contacted, reduces the energy loss of cutter arbor vibration.

In a further modification, as shown in fig. 1 and 3, the surface of the front end of the first handle 1 opposite to the ultrasonic blade 20 is provided with a clamping pad 11 to facilitate the clamping of the tissue in use.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.

Claims (10)

1. An ultrasonic surgical instrument, comprising: the energy-saving scissors comprise a handle component, a cutter bar component and an energy converter component, wherein the handle component comprises a first handle and a second handle, the second handle is internally provided with an accommodating cavity, and the first handle is pivoted above the second handle and forms a scissors structure with the second handle; the cutter bar assembly comprises a cutter bar arranged in the accommodating cavity and an ultrasonic cutter head arranged at the front end of the cutter bar and penetrating out of the front end of the second handle to be abutted against the first handle; a circuit board is further installed in the accommodating cavity, and a plurality of forward keys which are electrically connected with the circuit board and are of an integral structure are installed below the second handle; the energy converter assembly comprises an energy converter shell detachably connected with the second handle, an energy converter which is arranged in the energy converter shell and can be electrically connected with the circuit board, and a cable which is electrically connected with the energy converter and penetrates out of the energy converter shell and is connected to the energy converter shell in a sealing mode, and the front end of the energy converter penetrates out of the energy converter shell and is in threaded connection with the cutter bar.

2. The ultrasonic surgical instrument of claim 1 wherein the transducer comprises a transducer body, a horn mounted in the transducer body and having a forward end extending out of the transducer housing for threaded engagement with the blade holder.

3. The ultrasonic surgical instrument as claimed in claim 2, wherein the transducer housing comprises a front shell, a middle shell and a rear shell which are sequentially detachably and hermetically connected from the front end to the rear end, the front parts of the front shell and the middle shell are detachably mounted in the accommodating cavity, and the amplitude transformer penetrates out of the front end of the front shell and is in threaded connection with the cutter bar.

4. The ultrasonic surgical device of claim 2 wherein said horn is provided with a bumper at the location of contact with the transducer housing.

5. The ultrasonic surgical instrument as claimed in claim 1, wherein the cutter bar is mounted in the accommodating cavity through a rotating shaft having two ends connected to the wall of the accommodating cavity, the cutter bar is sleeved on the rotating shaft, the axis of the rotating shaft is perpendicular to the axis of the first handle and the second handle, and the outer surface of the rotating shaft is wrapped with a first buffer layer.

6. The ultrasonic surgical device of claim 1, wherein said keys are two and are mounted on the second handle at an acute forward angle to the second handle.

7. The ultrasonic surgical instrument according to claim 1, wherein a plurality of handle through holes having the same number as the number of the keys are formed in the front of the lower portion of the second handle, a mounting frame is disposed in the accommodating cavity, the keys are mounted on the mounting frame and correspond to the handle through holes one by one, and the circuit board is also disposed on the mounting frame and provided with electrical connectors capable of electrically connecting to the transducer.

8. The ultrasonic surgical instrument according to claim 1, wherein the second handle comprises a handle cover, a pivot housing and a handle blade housing, the handle cover, the pivot housing and the handle blade housing are sequentially and hermetically connected from the front end to the rear end, the pivot housing is pivotally connected with the first handle, the transducer housing is detachably connected with the handle blade housing, the circuit board is mounted in the handle blade housing, the tail end of the cutter bar is in threaded connection with the transducer in the handle blade housing, the button is arranged outside the handle blade housing and adjacent to the front end of the handle blade housing, the ultrasonic cutter head penetrates out from the front end of the handle cover, a protrusion extends upwards from the outer wall of the pivot housing, and the first handle is pivotally connected with the protrusion.

9. The ultrasonic surgical device of claim 8, wherein a second buffer layer is disposed between the blade bar and the pivot housing and the handle cover.

10. The ultrasonic surgical device of claim 1, wherein a surface of the front end of the first handle opposite the ultrasonic blade is provided with a clamping pad.

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