CN217744519U - Ultrasonic surgical instrument - Google Patents

Abstract

The utility model 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 arranged in the transducer shell and a cable, and the front end of the transducer is in threaded connection with the cutter bar. The utility model discloses a make dismantled and assembled part with the transducer, can effectively avoid extravagant, reduce use cost, change the setting of button simultaneously, can effectually prevent in the use that the foreign matter from falling into the clearance between the button.

Description

Ultrasonic surgical instrument

Technical Field

The utility model 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.

SUMMERY OF THE UTILITY MODEL

To the existing deficiency, the utility model provides an ultrasonic surgical instrument.

The utility model provides a technical scheme that its technical problem adopted is: an ultrasonic surgical instrument comprises a handle assembly, a cutter bar assembly and a transducer assembly, wherein the handle assembly 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 pivoting shell and a handle knife shell, the handle cover, the pivoting shell and the handle knife shell are sequentially and hermetically connected from the front end to the rear end, the pivoting shell and the handle knife shell are pivoted with the first handle, the transducer shell and the handle knife shell are detachably connected, the circuit board is installed in the handle knife shell, the tail end of the knife bar is in threaded connection with the transducer in the handle knife shell, the key is arranged at a position, close to the front end of the handle knife shell, outside the handle knife shell, the ultrasonic knife head penetrates out from the front end of the handle cover, a protrusion extends upwards from the outer wall of the pivoting shell, and the first handle and the protrusion are pivoted.

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 tool bit is provided with a clamping pad.

The beneficial effects of the utility model reside in that: the utility model makes the transducer assembly into a whole, the handle assembly and the cutter bar assembly form another whole, the two whole forms a detachable structure, only a single cutter head or a transducer needs to be replaced under the condition of failure, thereby effectively avoiding waste and reducing use cost; 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 cleaning is good; 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 structural diagram 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 present 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 conjunction with the accompanying drawings and embodiments, which are described in a clear and complete manner. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention. Furthermore, directional terms as referred to in the present disclosure, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., refer only to the direction of the attached drawings, and directional terms used are intended to better and more clearly illustrate and understand the present invention rather than to indicate or imply the orientation the present invention must have, and therefore should not be construed as limiting the present invention.

The embodiment of the present invention is shown in fig. 1 to 6, an ultrasonic surgical instrument, including a handle assembly, a cutter bar assembly, and a transducer assembly, where the handle assembly includes a first handle 1 and a second handle 10 having a receiving cavity 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 a scissors structure and can rotate relatively to each other to perform a clamping function, so as to facilitate the clamping in the operation, as shown in fig. 1, the front ends of the two handles face towards the right side, the first handle 1 is above the second handle 10, at this time, the first handle 1 becomes a thumb grip corresponding to the thumb part, the second handle 10 becomes a finger grip corresponding to other fingers, and according to the use requirement, they can be set into different shapes, such as a pistol grip configuration, and the receiving cavity in the second handle 10 can be used for installing other components of the instrument therein; 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 further installed 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 installed forwards below the second handle 10, namely the plurality of keys 4 are of an integral structure, excessive parts required for installing the keys 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 installed on the second handle 10, the reliability of the handle is improved, the keys 4 are installed 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, in the using process, the gaps between the plurality of keys 4 are downward, the foreign matters can be effectively prevented from falling into the gaps between the keys 4, the cleaning is good, the risk of failure of an instrument is reduced, the circuit board 3 can be installed at the position adjacent to the keys 4 in the accommodating cavity, the connecting circuit structure between the keys 4 is reduced, and the influence on the transducer assembly is reduced; the transducer assembly comprises a transducer shell 5 detachably connected with the second handle 10, a transducer 50 which is arranged in the transducer shell 5 and can be electrically connected with a 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 and is 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 using the detachable connection of the transducer shell 5 and the second handle 10, the transducer assembly becomes a detachable part, when the instrument has a problem, the cutter bar assembly or the transducer assembly can be replaced according to the problem, the waste can be effectively avoided, the use cost is reduced, the problem that the transducer and the cutter head in the existing instrument can not be detached together is solved, at the moment, the transducer shell 5 and the second handle 10 can be hermetically connected, the waterproof cable can be prevented from entering a containing cavity of the second handle 10 to damage the circuit board 3, a sealing ring can be used for realizing that the transducer is arranged in the transducer shell 5, the transducer shell 5 and the cable 5 can be electrically connected with the probe 5, and the probe can be conveniently connected with the probe 5 at the outlet of the existing probe, and the probe, the probe 5, and the probe 5 can be electrically connected with the existing probe, and the probe 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 includes a front shell 52, a middle shell 53 and a rear shell 54 which are detachably and hermetically connected 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 assembled by dividing the transducer housing 5 into three parts, each connected two parts are hermetically connected, sealing is realized by using a sealing ring, so that the transducer is free from water seepage during sterilization and cleaning, 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 horn 501 penetrates through the front end of the front shell 52 to be in threaded connection with the tool holder 2, and the front end of the corresponding front shell 52 is provided with a through hole for the horn 501 to penetrate through. The horn 501 is provided with buffer pads at the contact position with the transducer housing 5, the buffer pads are used for reducing the loss of the vibration energy of the horn 501, so as to ensure the normal vibration of the horn 501, the buffer pads are silica gel pads, the buffer pads are arranged at the positions of the horn 501 in the transducer housing 5 according to the sizes of the front shell 52, the middle shell 53 and the rear shell 54, when the horn 501 is simultaneously positioned in the three shells, the buffer pads are arranged at the positions of the three shells, which are in contact with the horn 501, the buffer pads are arranged at the positions of the front shell 52 and the middle shell 53, which are in contact with the horn 501, when the horn 501 is positioned in the front shell 52 and the middle shell 53, if the horn 501 in the through hole of the front shell 52, through which the horn 501 passes, is in contact with the front shell 52, the buffer pads are arranged in the through hole, the horn 501 is of a certain length, in order to stabilize the installation structure in the transducer housing 5, the structure for supporting the horn is arranged, if the horn 501 at the front end of the middle shell 53 passes through hole is in the through hole of the horn 501, the through hole for installing the horn is arranged in the through hole of the transducer housing, and the corresponding through hole for installing the horn 501, and the corresponding through hole for installing the horn 53 is arranged in the horn 53, and the corresponding through hole for installing the horn 53, and the corresponding structure for installing the horn 53 for installing the horn is arranged in the transducer housing, and the corresponding through hole for installing the horn 53 for installing the horn 501.

A further improvement, 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, the first handle and the second handle are close to or far 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 generate vertical displacement relative to the rotating shaft in vibration, so as to ensure the normal operation of the tool bar, the outer surface of the rotating shaft 21 is wrapped with a first buffer layer, so that the energy loss caused by the vertical displacement of the tool bar in vibration is reduced, and the energy loss caused by the silica gel pad capable of elastically deforming the second handle.

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, 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 conveniently pressed, 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 an electrical connector 41 capable of being electrically connected with the transducer 50 on the circuit board 3, which facilitates the connection between the circuit board 3 and the keys 4, the electrical connector 41 can also adopt the existing electrical connection structure capable of keeping electrical connection with the electrical connector, for example, and the electrical connector can be correspondingly connected with the probe.

In a further improvement, as shown in fig. 1 and 6, the second handle 10 includes a handle cover 100, a pivot joint housing 101 pivotally connected to the first handle 1, and a handle blade housing 102, which are sequentially and hermetically connected from the front end to the rear end, and thus facilitate the installation of the various components in the second handle 10, the transducer housing 5 is detachably connected to the handle blade housing 102, the circuit board 3 is installed in the handle blade housing 102, the rear end of the blade bar 2 is threadedly connected to the transducer 50 in the handle blade housing 102, that is, the rear end of the blade bar 2 is connected to the transducer 50 in the handle blade housing 102, the handle cover 100 and the pivot joint housing 101 correspond to the blade bar 2 and the ultrasonic blade head 20, the structure of the pivot joint housing 101 and the handle cover 100 is simplified, the pivot joint housing 101 and the handle cover 100 form a jaw portion of the instrument, the push button 4 is disposed outside the handle blade housing 102 at a position adjacent to the front end of the handle blade housing 102, the ultrasonic blade head 20 penetrates out from the front end of the handle cover 100, a protrusion 1010 extends upward from the outer wall of the pivot joint housing 101, and the first handle 1 and the second handle 10 facilitate the rotation of the first handle 10. And second buffer layers are arranged between the cutter bar 2 and the pivoting shell 101 as well as between the cutter bar 2 and the handle cover 100, and are arranged at the positions where the cutter bar 2 is contacted with the handle cover, so that the energy loss of cutter bar vibration is reduced.

In a further improvement, 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 considered to be within the scope of the invention as defined by the following claims.

Claims (10)

1. An ultrasonic surgical instrument, comprising: the 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 transducer assembly comprises a transducer shell detachably connected with the second handle, a transducer which is installed in the transducer shell and can be electrically connected with the circuit board, and a cable which is electrically connected with the transducer and penetrates out of the transducer shell and is connected to the transducer shell in a sealing mode, and the front end of the transducer penetrates out of the transducer 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 according to claim 1, wherein the knife bar is mounted in the accommodating cavity by a rotating shaft having two ends correspondingly connected to the wall of the accommodating cavity, the knife 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.

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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