CN218128672U - Drive forward type supersound cutter - Google Patents

Abstract

A front-drive ultrasonic cutter comprises an ultrasonic transducer, wherein the ultrasonic transducer is arranged at the far end region of the ultrasonic cutter, the far end region comprises two pressing nozzles which are oppositely arranged up and down, the pressing nozzles are hinged at the front end of a sleeve assembly of the ultrasonic cutter, the ultrasonic transducer is arranged on the inner surface of at least one pressing nozzle, and an insulating layer is arranged between the pressing nozzle and the ultrasonic transducer. The utility model discloses an ultrasonic transducer who will produce mechanical energy arranges the ultrasonic cutter distal end in, more hugs closely the tissue or is closer from the tissue, can effectively reduce the consumption among the ultrasonic transducer transmission energy, and reduce cost is showing the closed efficiency of cutting and the life who improves ultrasonic cutter.

Description

Drive forward type supersound cutter

Technical Field

The utility model relates to an ultrasonic cutter, in particular to a front-mounted ultrasonic cutter, belonging to the technical field of medical instruments.

Background

As is known, an ultrasonic scalpel system is a commonly used surgical medical instrument, and generally includes an ultrasonic scalpel main unit and accessories, an excitation switch, an ultrasonic scalpel, a connecting wire, and the like, wherein the ultrasonic scalpel is activated to work by using a pedal or manual control excitation switch, an output system of the ultrasonic scalpel main unit provides electric energy to a driving handle at a frequency required by resonance of the ultrasonic scalpel, the driving handle converts the electric energy into mechanical energy of ultrasonic vibration and transmits the mechanical energy to the tip of the ultrasonic scalpel, so that protein hydrogen bonds are broken after tissue in contact with the tip of the ultrasonic scalpel absorbs the ultrasonic energy, a cavitation effect is generated, and then coagulation denaturation is performed and cut under clamping pressure, an effect of cutting and coagulation is achieved, and simultaneously moisture in the tissue is vaporized to help tissue stratification.

At present, as shown in fig. 1, an ultrasonic transducer 1 disposed on an existing ultrasonic tool 10 is disposed in a handle housing at a proximal end of the tool, the ultrasonic transducer 1 is connected to a tool bar 2, when the ultrasonic transducer 1 works, electrical energy is converted into mechanical energy of ultrasonic vibration, and then the mechanical energy is transmitted to a tool tip 21 at a distal end of the ultrasonic tool 10 through the tool bar 2, the distance between the ultrasonic transducer 1 and the tool tip 21 is the length of the tool bar 2, the larger the energy consumed by the ultrasonic transducer 1 in the process of transmitting energy through the tool bar 2 is, and the more noise waves are interfered, so that the ultrasonic tool 10 is difficult to work normally and the shorter the service life is.

Disclosure of Invention

In order to overcome the above-mentioned not enough of prior art, the utility model provides a drive forward type ultrasonic cutting tool can effectively reduce the consumption in the ultrasonic transducer transmission energy, and reduce cost is showing the closed efficiency of cutting and the life who improves ultrasonic cutting tool.

The utility model provides a technical scheme that its technical problem adopted is:

a driven forward ultrasonic tool comprising an ultrasonic transducer disposed at a distal region of the ultrasonic tool;

the distal region comprises two pressing nozzles which are oppositely arranged up and down, the pressing nozzles are hinged at the front end of a sleeve assembly of the ultrasonic cutter, the ultrasonic transducer is arranged on the inner surface of at least one pressing nozzle, and an insulating layer is arranged between the pressing nozzle and the ultrasonic transducer;

or the far end area comprises a pressure nozzle hinged to the front end of the sleeve assembly through a limiting boss structure, a support piece is further sleeved in the sleeve assembly, the front end of the support piece is arranged opposite to the pressure nozzle, the ultrasonic transducer is arranged on the inner surface of the pressure nozzle, an insulating layer is arranged between the pressure nozzle and the ultrasonic transducer, and the rear end of the support piece is connected with the trigger assembly and can move telescopically relative to the sleeve assembly.

Optionally, a connection limiting structure is arranged on the sleeve assembly and used for connecting the pressure nozzle and limiting the rotation angle of the pressure nozzle.

Optionally, the connection limiting structure includes a connecting rod and a limiting connecting block arranged at one end of the pressure nozzle, the limiting connecting block is provided with a first limiting boss and a second limiting boss which are respectively hinged to the outer sleeve/inner sleeve and one end of the connecting rod, and the other end of the connecting rod is hinged to the inner sleeve/outer sleeve.

Optionally, the ultrasonic transducer includes at least one piece of piezoelectric ceramic, a positive electrode and a negative electrode, and two ends of the piezoelectric ceramic are electrically connected to the positive electrode and the negative electrode, respectively.

Optionally, a protective layer is further disposed on the surface of the ultrasonic transducer.

Optionally, the distal region includes a pressure nozzle and a cutter bar which are arranged in opposite directions, the pressure nozzle is hinged to the front end of the sleeve assembly through a limiting boss structure, and the ultrasonic transducer is mounted on a position of the cutter bar within 200mm from the tip of the cutter head.

Optionally, the ultrasonic transducer is connected to the inner end portion of the cutter bar, and is located inside the front end of an inner sleeve of the sleeve assembly outside the cutter bar, and an insulating sleeve is arranged between the ultrasonic transducer and the inner sleeve.

Optionally, the inner sleeve consists of a front inner sleeve and a rear inner sleeve which are connected end to end, and the ultrasonic transducer is fixed in the front inner sleeve through a limiting structure.

Through above-mentioned technical scheme, set up ultrasonic transducer in ultrasonic knife utensil distal end, small like this, with low costs, the transducer hugs closely the tissue or is closer to the tissue, and its power consumption is lower, and the cutting closure efficiency is higher, and the penetrating power is stronger, is showing the life who has improved ultrasonic knife utensil.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a schematic diagram of a prior art configuration;

the reference numerals in fig. 1 illustrate: 10. an ultrasonic cutter; 1. ultrasonic transducer, 2, tool bar, 21, tool tip.

Fig. 2 is a front view of a first embodiment of the present invention;

fig. 3a is an enlarged view of the structure at a in the first embodiment of the present invention;

fig. 3b is a partial structure diagram of the connection limiting structure in fig. 3 a.

FIG. 4 is an enlarged view of the side view angle at A in the first embodiment of the present invention;

in fig. 2-4 of the first embodiment reference numerals indicate:

10. an ultrasonic cutter; 1. the ultrasonic transducer 11, the piezoelectric ceramics 12, the positive electrode 13, the negative electrode 14 and the protective layer; 2. the device comprises a distal region 21, a pressure nozzle 211, an insulating layer 22, a sleeve assembly 221, an outer sleeve 222, an inner sleeve 223, a connection limiting structure 2231, a connecting rod 2232, a limiting connecting block 2232-1, a first limiting boss 2232-2, a second limiting boss 24 and a trigger assembly; 3. and a wire.

Fig. 5 is a front view of a second embodiment of the present invention;

fig. 6a is an enlarged view of the structure at a in the second embodiment of the present invention;

fig. 6b is a partial structural schematic view of the limiting boss structure in fig. 6 a.

Fig. 7 is an enlarged view of the structure of the second embodiment of the present invention at B;

in fig. 5-7 of the second embodiment reference numerals indicate:

10. an ultrasonic cutter; 1. the ultrasonic transducer comprises an ultrasonic transducer 11, piezoelectric ceramics 12, a positive electrode 13, a negative electrode 14 and a protective layer; 2. distal region, 21, pressure nozzle, 211, insulation layer, 22, sleeve assembly, 221, outer sleeve, 222, inner sleeve, 223, limiting boss structure, 2231, limiting protrusion, 2232, limiting hole, 23, support, 24, trigger assembly, 241, fastener; 3. and a wire.

Fig. 8 is a front view of a third embodiment of the present invention;

FIG. 9 is an enlarged view of the structure at A in an embodiment of the third embodiment of the present invention;

FIG. 10 is an enlarged view of the structure at A in another embodiment of the third embodiment of the present invention;

in fig. 8-10 of the third embodiment reference numerals indicate:

10. an ultrasonic cutter; 1. the ultrasonic device comprises an ultrasonic transducer, 11, a limiting structure, 2, a distal region, 21, a pressure nozzle, 211, a pressure pad, 22, a cutter bar, 221, an insulating sleeve, 23, a sleeve assembly, 231, an outer sleeve, 2311, a front outer sleeve, 2312, a rear outer sleeve, 2313, a first fastener, 232, an inner sleeve, 2321, a front inner sleeve, 2322, a rear inner sleeve, 2323, a second fastener, 233, a limiting boss structure, 24 and a trigger assembly; 3. And (4) conducting wires.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example 1

Fig. 2, 3a, 3b and 4 show a schematic structural view of a preferred embodiment 1 of the present invention, which is a front-mounted driving ultrasonic tool 10, comprising an ultrasonic transducer 1, wherein the ultrasonic transducer 1 is arranged at the distal region 2 of the ultrasonic tool 10.

The ultrasonic transducer 1 is arranged at the far end of the ultrasonic cutter 10 close to the tip end of the cutter, and is conducted with a plug or a connector through a lead 3 or other conducting devices, so as to be connected with the ultrasonic cutter host. The output system of the ultrasonic knife main machine transmits the electric energy required by the resonance of the ultrasonic knife 10 to the ultrasonic transducer 1, the ultrasonic transducer 1 converts the electric energy into mechanical energy of ultrasonic vibration and transmits the mechanical energy to the tip of the ultrasonic knife, and the effect of cutting and coagulating the tissue is achieved, so that the transmission distance is short, the energy consumption is low, the cost is low, the service life of the ultrasonic knife is prolonged, and the ultrasonic transducer 1 is tightly attached to the tissue or is closer to the tissue, the penetrating power is strong, and the cutting closing efficiency is high.

Wherein, the distal region 2 comprises two pressing nozzles 21 arranged up and down oppositely, the pressing nozzles 21 are hinged at the front end of a sleeve assembly 22 of the ultrasonic cutter 10, the ultrasonic transducer 1 is arranged on the inner surface of at least one pressing nozzle 21, and an insulating layer 211 is arranged between the pressing nozzle 21 and the ultrasonic transducer 1.

Two pressure nozzles 21 can be respectively rotatory dress on thimble assembly 22, and the near-end of pressure nozzle 21 links together with interior sleeve pipe 222 and outer tube 221, and during the operation, the trigger through pulling trigger assembly 24 or other drive structure drive thimble assembly 22's interior sleeve pipe 222 and outer tube 221 move relatively, and then drive two pressure nozzles 21 and rotate to realize that pressure nozzle 21 is closed, press from both sides the tissue tight, cooperate the ultrasonic transducer 1 on the pressure nozzle 21, carry out the tissue and surely congeal. The ultrasonic transducer 1 may be provided on only one of the pressure nozzles 21, or the ultrasonic transducers 1 may be provided on each of the two pressure nozzles 21.

In an alternative embodiment of this embodiment, the sleeve assembly 22 is provided with a connection limiting structure 223 for connecting the pressure nozzle 21 and limiting the rotation angle thereof.

In a further specific implementation manner of this embodiment, the connection limiting structure 223 includes a connecting rod 2231 and a limiting connecting block 2232 disposed at one end of the pressure nozzle 21, the limiting connecting block 2232 is provided with a first limiting boss 2232-1 and a second limiting boss 2232-2 hinged to one end of the outer sleeve 221 and one end of the connecting rod 2231, respectively, and the other end of the connecting rod 2231 is hinged to the inner sleeve 222. The further concrete implementation structure is that the first limit boss 2232-1 may be a pin shaft disposed at the tail end of the pressure nozzle 21, or may be a hole feature and a rotating shaft part disposed on the pressure nozzle 21, the second limit boss 2232-2 is the same as the first limit boss 2232-1, the first limit boss 2232-1 in the above structure form is matched with a hole disposed at the distal end of the outer sleeve 221, the pressure nozzle 21 may rotate around the pin shaft, meanwhile, the distal end of the outer sleeve 221 may also be provided with a boss feature, when the pressure nozzle 21 is in an open state, the tail end of the pressure nozzle 21 abuts against the boss feature of the outer sleeve 221, and an opening angle of the pressure nozzle 21 is defined; meanwhile, one end of each of the two connecting rods 2231 is hinged to the pressure nozzle 21, and the other end is hinged to the inner sleeve 222; pulling the trigger of trigger subassembly 24, drive the pull rod of trigger subassembly 24 and move to the near-end, and then drive the connecting rod 2231 of trigger subassembly 24, connecting rod 2231 drives pressure nozzle 21 and rotates around the round pin axle, and then realizes the closure of pressure nozzle 21. In the description of this section, the outer casing 221 and the inner casing 222 may be interchanged to achieve the above functions.

In an optional implementation manner of this embodiment, the ultrasonic transducer 1 includes at least one piezoelectric ceramic 11, a positive electrode 12 and a negative electrode 13, and two ends of the piezoelectric ceramic 11 are electrically connected to the positive electrode 12 and the negative electrode 13, respectively. Specifically, the lead 3 is connected through the positive electrode 12 and the negative electrode 13, and is further connected to the ultrasonic scalpel main unit, wherein the piezoelectric ceramic 11 may be one piece or a plurality of pieces arranged together, and the projection surface of the piezoelectric ceramic 11 may be in a rectangular shape, a triangular shape, or other geometric shapes.

In a further preferred embodiment of this embodiment, the surface of the ultrasonic transducer is further provided with a protective layer 14. The protective layer 14 may be a layer of metallic stainless steel or other non-metallic material that covers the piezoelectric ceramic 11.

Example 2

In the embodiment 2 shown in fig. 5, 6a, 6b and 7, a front drive type ultrasonic tool includes an ultrasonic transducer 1, and the ultrasonic transducer 1 is arranged at the distal end region 2 of the ultrasonic tool 10.

The ultrasonic transducer 1 is arranged at the far end of the ultrasonic cutter 10 close to the tip end of the cutter, and is conducted with a plug or a connector through a lead 3 or other conducting devices, so as to be connected with the ultrasonic cutter host. The output system of the ultrasonic knife main machine transmits the electric energy required by the resonance of the ultrasonic knife 10 to the ultrasonic transducer 1, the ultrasonic transducer 1 converts the electric energy into mechanical energy of ultrasonic vibration and transmits the mechanical energy to the tip of the ultrasonic knife, and the effect of cutting and coagulating the tissue is achieved, so that the transmission distance is short, the energy consumption is low, the cost is low, the service life of the ultrasonic knife is prolonged, and the ultrasonic transducer 1 is tightly attached to the tissue or is closer to the tissue, the penetrating power is strong, and the cutting closing efficiency is high.

In a specific implementation, the distal region 2 includes a pressure nozzle 21 hinged to the front end of the sleeve assembly 22 through a limit boss structure 223, the sleeve assembly 22 is further sleeved with a support 23, the front end of the support 23 is arranged opposite to the pressure nozzle 21, the ultrasonic transducer 1 is disposed on the inner surface of the pressure nozzle 21, an insulating layer 211 is disposed between the pressure nozzle 21 and the ultrasonic transducer 1, and the rear end of the support 23 is connected to the trigger assembly 24 and can make telescopic movement relative to the sleeve assembly.

The ultrasonic transducer 1 is installed on the pressure nozzle 21, the pressure nozzle 21 is fixed on the outer sleeve 221 and the inner sleeve 222 of the sleeve assembly 22 through the limiting boss structure 223 on the pressure nozzle 21, the specific fixing mode of the limiting boss structure 223 can be that the limiting boss 2231 arranged on the pressure nozzle 21 and the limiting hole 2232 arranged on the outer sleeve 221 and the inner sleeve 222 are matched and connected, the near end of the pressure nozzle 21 is respectively connected with the inner sleeve 222 and the outer sleeve 221, the pressure nozzle 21 is matched with the opposite support 23, so that the pressure nozzle 21 can clamp soft tissues, the support 23 is fixed in the inner sleeve 222 through the fastening piece 241 such as a pin, and when the ultrasonic transducer works, the inner sleeve 222 and the outer sleeve 221 are driven to relatively move through the driving structure such as the trigger assembly 24, and then the pressure nozzle 21 and the support 23 are driven to relatively rotate and move, so that the pressure nozzle 21 is closed, tissues are clamped, and the ultrasonic transducer 1 is excited to achieve the effect of cutting and coagulating tissues.

In an optional implementation manner of this embodiment, the ultrasonic transducer 1 includes at least one piezoelectric ceramic 11, a positive electrode 12 and a negative electrode 13, two ends of the piezoelectric ceramic 11 are electrically connected to the positive electrode 12 and the negative electrode 13, respectively, and the positive electrode 12 and the negative electrode 13 in the illustrated implementation manner are disposed at a specific position, and may also be interchanged. Specifically, the lead 3 is connected through the positive electrode 12 and the negative electrode 13, and further connected to the ultrasonic scalpel main body, wherein the piezoelectric ceramic 11 may be one block or may be a plurality of blocks arranged together, and a projection surface of the piezoelectric ceramic 11 may be in a rectangular shape, a triangular shape, or other geometric shapes.

In a further preferred embodiment of this embodiment, the surface of the ultrasonic transducer 1 is further provided with a protective layer 14. The protective layer 14 may be a layer of metal or other non-metallic material overlying the piezoelectric ceramic 11.

Example 3

In another embodiment shown in fig. 8-10, a powered forward ultrasonic tool comprises an ultrasonic transducer 1, the ultrasonic transducer 1 being disposed at a distal region 2 of the ultrasonic tool 10.

The ultrasonic transducer 1 is arranged at the far end of the ultrasonic cutter close to the tip end of the cutter, is communicated with a plug or a connector through a lead 3 or other conducting devices, and is further connected with the ultrasonic cutter main machine. The output system of the ultrasonic knife main machine transmits the electric energy required by the resonance of the ultrasonic knife 10 to the ultrasonic transducer 1, the ultrasonic transducer 1 converts the electric energy into mechanical energy of ultrasonic vibration and transmits the mechanical energy to the tip of the ultrasonic knife, and the effect of cutting and coagulating the tissue is achieved, so that the transmission distance is short, the energy consumption is low, the cost is low, the service life of the ultrasonic knife is prolonged, and the ultrasonic transducer 1 is tightly attached to the tissue or is closer to the tissue, the penetrating power is strong, and the cutting closing efficiency is high.

In this embodiment, the distal region 2 includes a pressure nozzle 21 and a knife bar 22 disposed opposite to each other, the pressure nozzle 21 is hinged to the front end of the sleeve assembly 23 through a limiting boss 233, and the ultrasonic transducer 1 is mounted on the knife bar 22 within 200mm from the tip of the knife head.

Through with ultrasonic transducer 1 is external certain scope's design apart from most advanced, and this certain scope is the most suitable scope and is less than 200mm department apart from the tool bit pointed end of cutter arbor 22, cutter arbor 22 is connected to ultrasonic transducer 1 one end, and the other end switches on through wire 3 or other electrically conductive device with plug or connector, and then links to each other with the host computer. As another possible arrangement, the tool holder 22 may also be provided as a one-piece structure with the ultrasonic transducer 1.

The specific implementation manner of the limiting boss structure 233 is that a limiting protrusion arranged on the pressure nozzle 21 is matched and connected with limiting holes arranged on the outer sleeve 231 and the inner sleeve 232, the proximal end of the pressure nozzle 21 is respectively connected with the inner sleeve 232 and the outer sleeve 231, and the pressure nozzle 21 is matched with the opposite knife bar 22.

In an optional implementation manner of this embodiment, the ultrasonic transducer 1 is connected to an inner end of the tool holder 22 or integrally formed with the tool holder 22, and is located inside a front end of an inner sleeve 232 of the sleeve assembly 23 outside the tool holder 22, and an insulating sleeve is disposed between the ultrasonic transducer 1 and the inner sleeve 232. Wherein, the arrangement of the insulating sleeve can prevent short circuit or open circuit. Specifically, the installation of the insulating sleeve can be through setting up the spacing draw-in groove on the insulating sleeve and establishing the spacing boss on the inner wall of interior sleeve pipe 232, and spacing boss cooperatees with spacing draw-in groove, also perhaps exchanges the position that sets up of spacing draw-in groove and spacing boss, all can effectively avoid ultrasonic transducer 1's longitudinal movement.

During operation, the trigger of the trigger assembly 24 or other driving structure is pulled to drive the inner sleeve 232 and the outer sleeve 231 of the sleeve assembly 23 to move relatively, so as to drive the pressure nozzle 21 to rotate, the pressure nozzle 21 and the cutter bar 22 are closed relatively, the tissue is clamped, and the ultrasonic transducer 1 is excited to achieve the effect of cutting and coagulating the tissue.

In an alternative embodiment of this embodiment, the inner sleeve 232 is composed of a front inner sleeve 2321 and a rear inner sleeve 2322 connected end to end, and the ultrasonic transducer 1 is fixed in the front inner sleeve 2321 by a limiting structure.

Above-mentioned limit structure can include the spacing platform of direct establishing on interior sleeve pipe 232 and the spacing groove of setting on ultrasonic transducer 1, perhaps also can include the spacing platform of direct establishing on ultrasonic transducer 1 and set up the spacing groove on interior sleeve pipe 232 simultaneously, and concrete shape is unlimited, cooperatees through spacing groove and spacing platform, can effectively avoid ultrasonic transducer 1 axial rotation relative sleeve pipe assembly 23 like this.

The front inner bushing 2321 is connected to the rear inner bushing 2322 in a manner not limited to connection by a second fastener 2323 that is pinned. In addition, the outer sleeve may also be a split structure composed of the front outer sleeve 2311 and the rear outer sleeve 2312, and the front outer sleeve 2311 and the rear outer sleeve 2312 are connected through the first fastener 2313, and the specific connection mode may be pin connection, threaded connection, bonding, welding, or the like.

The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do the restriction in any form, all basis the utility model discloses a technical essence makes any simple modification and equal change to above embodiment, all falls into within the protection scope of the utility model.

Claims (8)

1. A front-mounted driving ultrasonic cutter comprises an ultrasonic transducer, and is characterized in that: the ultrasonic transducer is arranged at the distal end area of the ultrasonic cutter;

the distal region comprises two pressing nozzles which are oppositely arranged up and down, the pressing nozzles are hinged at the front end of a sleeve assembly of the ultrasonic cutter, the ultrasonic transducer is arranged on the inner surface of at least one pressing nozzle, and an insulating layer is arranged between the pressing nozzle and the ultrasonic transducer;

or the far end area comprises a pressure nozzle hinged to the front end of the sleeve assembly through a limiting boss structure, a support piece is further sleeved in the sleeve assembly, the front end of the support piece is arranged opposite to the pressure nozzle, the ultrasonic transducer is arranged on the inner surface of the pressure nozzle, an insulating layer is arranged between the pressure nozzle and the ultrasonic transducer, and the rear end of the support piece is connected with the trigger assembly and can move telescopically relative to the sleeve assembly.

2. The forward drive ultrasonic tool of claim 1, further comprising: the sleeve pipe assembly is provided with a connection limiting structure used for connecting the pressure nozzle and limiting the rotation angle of the pressure nozzle.

3. The ultrasonic front drive cutter of claim 2, wherein: the connecting and limiting structure comprises a connecting rod and a limiting connecting block arranged at one end of the pressure nozzle, a first limiting boss and a second limiting boss which are respectively hinged with the outer sleeve/inner sleeve and one end of the connecting rod are arranged on the limiting connecting block, and the other end of the connecting rod is hinged on the inner sleeve/outer sleeve.

4. The ultrasonic front drive cutter of claim 1, wherein: the ultrasonic transducer comprises at least one piece of piezoelectric ceramic, a positive electrode and a negative electrode, wherein two ends of the piezoelectric ceramic are respectively and electrically connected with the positive electrode and the negative electrode.

5. The forward drive ultrasonic cutter of claim 4, wherein: the surface of the ultrasonic transducer is also provided with a protective layer.

6. The ultrasonic front drive cutter of claim 1, wherein: the far-end area comprises a pressing nozzle and a cutter bar which are arranged in an up-down opposite mode, the pressing nozzle is hinged to the front end of the sleeve pipe assembly through a limiting boss structure, and the ultrasonic transducer is installed on the position, within 200mm of the cutter bar from the tip of the cutter head, of the cutter bar.

7. The ultrasonic front drive cutter of claim 6, wherein: the ultrasonic transducer is connected to the inner end part of the cutter bar or integrally formed with the cutter bar, and is positioned inside the front end of an inner sleeve of the sleeve assembly outside the cutter bar, and an insulating sleeve is arranged between the ultrasonic transducer and the inner sleeve.

8. The ultrasonic front drive cutter of claim 7, wherein: the inner sleeve consists of a front inner sleeve and a rear inner sleeve which are connected end to end, and the ultrasonic transducer is fixed in the front inner sleeve through a limiting structure.

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