CN108852468B - Novel ultrasonic knife and use method thereof - Google Patents
Novel ultrasonic knife and use method thereof Download PDFInfo
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- CN108852468B CN108852468B CN201810775636.1A CN201810775636A CN108852468B CN 108852468 B CN108852468 B CN 108852468B CN 201810775636 A CN201810775636 A CN 201810775636A CN 108852468 B CN108852468 B CN 108852468B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
- A61B2017/320082—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic for incising tissue
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2217/00—General characteristics of surgical instruments
- A61B2217/002—Auxiliary appliance
- A61B2217/005—Auxiliary appliance with suction drainage system
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Abstract
The invention relates to a novel ultrasonic knife which comprises a hand piece, a handle part hinged to the front end of the hand piece, a transducer and an ultrasonic knife bar arranged at the output end of the transducer, wherein a knife head of the ultrasonic knife bar penetrates out of the front end of the hand piece, a chuck is arranged at the front end of the handle part and is positioned below the knife head, and a shield capable of axially moving along the ultrasonic knife bar is further arranged above the knife head. The novel ultrasonic knife is not easy to cause wound to normal human tissues.
Description
Technical Field
The invention relates to a medical instrument, in particular to a novel ultrasonic knife and a use method thereof.
Background
The ultrasonic knife is a medical instrument which uses ultrasonic technology to make the knife head generate high-frequency vibration so as to realize the cutting of human tissues. The ultrasonic knife comprises a transducer, the output end of the transducer is connected with an ultrasonic knife bar through threads, when the ultrasonic knife is used, an operator places pre-cut human tissue between a knife head of the ultrasonic knife bar and a chuck above the knife head, then the chuck clamps the tissue between the knife head and the chuck through a trigger on the shell, and meanwhile, an ultrasonic switch button is opened, so that the human tissue is cut off under the vibration action of the knife head. The existing ultrasonic knife is exposed due to the fact that the knife head is arranged, when a doctor performs cutting operation on tissues to be cut, normal human tissues located on one side, away from the clamping head, of the knife head are affected by vibration of the knife head, normal human tissues near the knife head are often cut by the knife head, even larger wounds can be generated, and then operation failure is caused. At present, even doctors with abundant operation experience are unavoidably not wounded to other tissues. In addition, the existing ultrasonic knife can generate more heat when cutting tissues, the excessive heat also has adverse effects on the surrounding normal tissues, and wounds at the cut tissues are not easy to solidify.
In view of the above-mentioned drawbacks, the present inventors have actively studied and innovated to create a new ultrasonic blade with a new structure, which has a more industrial utility value.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a novel ultrasonic knife which is not easy to cause wound to normal human tissues. In addition, the invention also provides a use method of the novel ultrasonic knife capable of reducing heat during cutting.
The novel ultrasonic knife comprises a hand piece, a handle part hinged to the front end of the hand piece, a transducer and an ultrasonic knife bar arranged at the output end of the transducer, wherein a knife head of the ultrasonic knife bar penetrates out of the front end of the hand piece, a chuck is arranged at the front end of the handle part and is positioned below the knife head, and a shield capable of axially moving along the ultrasonic knife bar is further arranged above the knife head.
Furthermore, the novel ultrasonic knife is characterized in that a first chute is formed in the upper surface of the front end of the hand piece, one end of the first chute is connected with the front end surface of the hand piece, and the shield is slidably arranged in the first chute.
Furthermore, a push-pull rod is arranged between the handle part and the hand piece, one end of the push-pull rod is hinged with the handle part, and the other end of the push-pull rod is hinged with the shield.
Further, in the novel ultrasonic knife disclosed by the invention, the lower surface of the handle part is provided with the second sliding groove, the second sliding groove is internally and slidably provided with the sliding plate, one end of the push-pull rod is hinged with the sliding plate, and the other end of the push-pull rod is hinged with the protecting cover.
Furthermore, the novel ultrasonic knife disclosed by the invention comprises a clamping plate and lower wings positioned at two sides of the clamping plate, wherein a polytetrafluoroethylene gasket is arranged on the upper surface of the clamping plate, and the protective cover comprises a base plate and upper wings positioned at two sides of the base plate.
Furthermore, the novel ultrasonic knife disclosed by the invention is characterized in that the clamping head and the protective cover can enclose to form a containing cavity.
Furthermore, according to the novel ultrasonic knife disclosed by the invention, the heat insulation layer is arranged on the lower surface of the base plate, the shield is made of transparent materials, the shield is slidably arranged in the first sliding groove through the guide rail, and the sliding plate is slidably arranged in the second sliding groove through the guide rail.
Further, the novel ultrasonic knife disclosed by the invention comprises a bottom shell, wherein the bottom shell is of a cylindrical structure with an opening at the top end, a main rod is arranged in the bottom shell, a working cavity is arranged between the bottom surface of the main rod and the bottom wall of the bottom shell, a connecting rod is arranged on the top surface of the main rod, a variable amplitude rod is arranged above the connecting rod, piezoelectric ceramics are stacked on the connecting rod, the piezoelectric ceramics are stacked on the connecting rod and comprise a plurality of annular piezoelectric ceramics sleeved on the connecting rod, the piezoelectric ceramics are stacked between the main rod and the variable amplitude rod, a positioning groove is formed in the bottom surface of the variable amplitude rod, the top end of the connecting rod is positioned in the positioning groove, the variable amplitude rod, the piezoelectric stacks and the outer side of the main rod are further provided with a first silica gel layer, the top end of the variable amplitude rod is provided with external threads matched with an ultrasonic knife bar, the transducer further comprises a first channel for sucking blood and smog, the first channel extends from the upper surface of the variable amplitude rod to the bottom surface of the main rod, a micro pump is arranged in the working cavity, the input end of the micro pump is communicated with the first channel, the output end of the micro pump is communicated with the first channel through a first output port of the micro pump, and the first channel is communicated with the ultrasonic knife bar.
Furthermore, a second silica gel layer is arranged between the piezoelectric ceramic stack and the connecting rod of the novel ultrasonic knife.
Further, the novel ultrasonic knife of the invention, the transducer further comprises a second channel for conveying cooling gas, the second channel extends from the upper surface of the amplitude transformer to the bottom surface of the main rod, the second channel is communicated with the outside through a second output port on the bottom shell, and a second conveying channel communicated with the second channel is arranged on the ultrasonic knife bar.
The application method of the novel ultrasonic knife comprises the step that when the human tissue is cut, the external cold source sequentially passes through the second output port, the second channel and the second conveying channel to convey the cold source to the cut human tissue.
By means of the scheme, the invention has at least the following advantages: the novel ultrasonic knife is not easy to cause wound to normal human tissues.
In summary, the novel ultrasonic knife provided by the invention has the advantages that the shield capable of axially moving along the ultrasonic knife bar is further arranged above the knife head, so that on one hand, a doctor can arrange the shield below the knife head when cutting tissues, and on the other hand, the shield can be retracted when the doctor searches for pre-cut tissues to expose the knife head, so that the operation field of the doctor is not influenced, and the doctor can conveniently search for the pre-cut tissues due to a certain gap between the knife head and the shield.
The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the present invention, as it is embodied in the following description, with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is a right side view of the novel ultrasonic blade of the present invention;
FIG. 2 is a state diagram of the use of the novel ultrasonic blade;
FIG. 3 is a schematic view of the collet and shield;
fig. 4 is a schematic structural diagram of a transducer.
In the figure, 1: a hand piece; 2: a handle portion; 3: a transducer; 4: a cutter head; 5: a chuck; 6: a shield; 7: a first chute; 8: a push-pull rod; 9: a second chute; 10: a slide plate; 11: a clamping plate; 12: a lower wing; 13: a polytetrafluoroethylene gasket; 14: a substrate; 15: an upper wing; 16: a receiving chamber; 17: a thermal insulation layer; 18: a bottom case; 19: a main rod; 20: a working chamber; 21: a connecting rod; 22: a horn; 23: stacking piezoelectric ceramics; 24: a positioning groove; 25: a first silica gel layer; 26: a first channel; 27: a micropump; 28: a first conveyor path; 29: a second silica gel layer; 30: a second channel; 31: and a second conveyor path.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
Referring to fig. 1 to 4, a novel ultrasonic knife according to a preferred embodiment of the present invention comprises a hand piece 1, a handle portion 2 hinged to the front end of the hand piece, a transducer 3, and an ultrasonic knife bar disposed at the output end of the transducer, wherein a knife head 4 of the ultrasonic knife bar penetrates out of the front end of the hand piece, a chuck 5 is disposed at the front end of the handle portion, the chuck is located below the knife head, and a shield 6 capable of moving axially along the ultrasonic knife bar is disposed above the knife head.
The setting of guard shield, on the one hand doctor can set up the guard shield in the below of tool bit when carrying out cutting operation to the tissue, owing to have certain clearance between tool bit and the guard shield, just so can avoid the normal tissue of tool bit top to receive the influence of tool bit vibration, on the other hand can retract the guard shield when the doctor seeks the precut tissue to make the tool bit expose, thereby do not influence doctor's operation field of vision, make things convenient for the doctor to seek precut tissue.
Preferably, the upper surface of the front end of the hand piece of the novel ultrasonic knife is provided with the first chute 7, one end of the first chute is connected with the front end surface of the hand piece, and the shield is slidably arranged in the first chute.
Preferably, a push-pull rod 8 is arranged between the handle part and the hand piece, one end of the push-pull rod is hinged with the handle part, and the other end of the push-pull rod is hinged with the shield.
Preferably, the lower surface of the handle part of the novel ultrasonic knife is provided with the second chute 9, the second chute is internally and slidably provided with the sliding plate 10, one end of the push-pull rod is hinged with the sliding plate, and the other end of the push-pull rod is hinged with the shield.
The push-pull rod is convenient for a doctor to operate the shield. Specifically, when the doctor is looking for the precut tissue, the handle portion is opened, and as the push-pull rod is positioned at the rear side of the hinge shaft of the handle portion and the hand piece, and then the handle portion is opened, the front end of the push-pull rod pulls the shield to move towards the rear side until the cutter head is completely exposed, and at the moment, the sliding plate is positioned at the forefront end of the second sliding groove. Therefore, the shield can not influence the vision of a doctor, the doctor can conveniently find related tissues, after finding the pre-cut tissues, the doctor can close the handle part, so that the chuck moves towards the direction of the cutter head, the device clamps the tissues by the chuck and the cutter head, and meanwhile, the shield moves towards the direction of the cutter head under the action of the push-pull rod until the shield completely covers the cutter head, and at the moment, the sliding plate is positioned at the rearmost end in the second sliding groove. The doctor can then turn on the ultrasonic switch to break the tissue under the action of the collet and the tool bit. Because the shield and the cutter head have a certain clearance, normal tissues above the cutter head can be prevented from being influenced by the cutter head.
Preferably, the novel ultrasonic knife of the invention comprises a clamping plate and lower wings 12 positioned at two sides of the clamping plate 11, a polytetrafluoroethylene gasket 13 is arranged on the upper surface of the clamping plate, and the protective cover comprises a base plate and upper wings 15 positioned at two sides of the base plate 14.
Preferably, the novel ultrasonic blade, collet and shield of the present invention are capable of enclosing the receiving cavity 16.
Preferably, the novel ultrasonic knife is characterized in that the heat insulation layer 17 is arranged on the lower surface of the base plate, the shield is made of transparent materials, the shield is slidably arranged in the first sliding groove through the guide rail, and the sliding plate is slidably arranged in the second sliding groove through the guide rail.
The arrangement of the heat insulation layer can prevent the heat generated in the cutting process from affecting surrounding tissues. On the other hand, the accommodating cavity is arranged, so that the influence of the cutting process on surrounding tissues can be further prevented.
As an preference, the novel ultrasonic knife of the invention comprises a bottom shell 18, the bottom shell is of a cylindrical structure with an opening at the top end, a main rod 19 is arranged in the bottom shell, a working cavity 20 is arranged between the bottom surface of the main rod and the bottom wall of the bottom shell, a connecting rod 21 is arranged on the top surface of the main rod, a variable-amplitude rod 22 is arranged above the connecting rod, a piezoelectric ceramic stack 23 is arranged on the connecting rod, the piezoelectric ceramic stack comprises a plurality of annular piezoelectric ceramics sleeved on the connecting rod, the piezoelectric ceramic stack is positioned between the main rod and the variable-amplitude rod, a positioning groove 24 is arranged on the bottom surface of the variable-amplitude rod, the top end of the connecting rod is positioned in the positioning groove, a first silica gel layer 25 is further arranged on the outer sides of the variable-amplitude rod, the top end of the variable-amplitude rod is provided with external threads matched with an ultrasonic knife rod, the transducer also comprises a first channel 26 for sucking blood and smoke, the first channel extends from the upper surface of the variable-amplitude rod to the bottom surface of the main rod, a micro pump 27 is arranged in the working cavity, the input end of the micro pump is communicated with the first channel, the output end of the micro pump is communicated with the outside through a first output port on the bottom shell, the micro pump is communicated with the outside, and a first conveying channel is communicated with the first conveying channel 28.
The arrangement of the first channel enables a doctor to absorb blood or fog around the tissue to the outside through the micropump in the process of cutting the tissue, thereby facilitating the cutting of the tissue by an operator.
Preferably, a second silica gel layer 29 is arranged between the piezoelectric ceramic stack and the connecting rod of the novel ultrasonic knife.
Preferably, the novel ultrasonic knife of the invention, the transducer further comprises a second channel 30 for conveying cooling gas, the second channel extends from the upper surface of the amplitude transformer to the bottom surface of the main rod, the second channel is communicated with the outside through a second output port on the bottom shell, and a second conveying channel 31 communicated with the second channel is arranged on the ultrasonic knife bar.
The arrangement of the second channel enables doctors to convey cold sources to the tissues through the second channel when cutting the tissues, so that the tissues are cooled to a certain extent, the influence of overheat heat on surrounding tissues is prevented, and meanwhile, the condensation of wounds is promoted.
The application method of the novel ultrasonic knife comprises the step that when the human tissue is cut, the external cold source sequentially passes through the second output port, the second channel and the second conveying channel to convey the cold source to the cut human tissue.
When a doctor cuts tissues, the doctor can convey a cold source to the tissues through the second channel, so that the doctor can cool the tissues to a certain extent, the influence of overheat heat on surrounding tissues is prevented, and meanwhile, the condensation of wounds is promoted.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description.
Furthermore, the foregoing is only a preferred embodiment of the present invention, and it should be noted that it is possible for those skilled in the art to make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. Meanwhile, it should be understood that although the present disclosure describes embodiments, not every embodiment contains only one independent technical solution, and the description is merely for clarity, and those skilled in the art should consider the disclosure as a whole, and the technical solutions in the examples may be combined appropriately to form other embodiments that can be understood by those skilled in the art.
Claims (6)
1. The utility model provides a novel ultrasonic knife, includes the hand piece, articulates in the handle portion of hand piece front end, transducer and sets up in the ultrasonic knife pole of transducer output, the front end of hand piece is worn out to the tool bit of ultrasonic knife pole, the front end of handle portion is provided with the chuck, the chuck is located the below of tool bit, its characterized in that: the ultrasonic tool comprises a tool bit, and is characterized in that a shield capable of axially moving along an ultrasonic tool bar is further arranged above the tool bit, a first sliding groove is formed in the upper surface of the front end of the hand piece, one end of the first sliding groove is connected with the front end face of the hand piece, the shield is slidably arranged in the first sliding groove, a push-pull rod is arranged between the handle portion and the hand piece, one end of the push-pull rod is hinged to a handle portion, the other end of the push-pull rod is hinged to the shield, a second sliding groove is formed in the lower surface of the handle portion, a sliding plate is slidably arranged in the second sliding groove, one end of the push-pull rod is hinged to the sliding plate, and the other end of the push-pull rod is hinged to the shield.
2. The novel ultrasonic blade of claim 1, wherein: the clamping head comprises a clamping plate and lower wings positioned on two sides of the clamping plate, a polytetrafluoroethylene gasket is arranged on the upper surface of the clamping plate, and the protecting cover comprises a base plate and upper wings positioned on two sides of the base plate.
3. The novel ultrasonic blade of claim 2, wherein: the collet and shield can enclose a receiving cavity.
4. A novel ultrasonic blade according to claim 3, characterized in that: the lower surface of base plate is provided with the insulating layer, the guard shield is made by transparent material, the guard shield pass through the guide rail slidable set up in the first spout, the slide pass through the guide rail slidable set up in the second spout.
5. The novel ultrasonic blade of claim 1, wherein: the transducer comprises a bottom shell, the bottom shell is of a cylindrical structure with an opening at the top end, a main rod is arranged in the bottom shell, a working cavity is formed between the bottom surface of the main rod and the bottom wall of the bottom shell, a connecting rod is arranged on the top surface of the main rod, an amplitude transformer is arranged above the connecting rod, a piezoelectric ceramic stack is arranged on the connecting rod and comprises a plurality of annular piezoelectric ceramics sleeved on the connecting rod, the piezoelectric ceramics stack is arranged between the main rod and the amplitude transformer, a positioning groove is formed in the bottom surface of the amplitude transformer, the top end of the connecting rod is positioned in the positioning groove, a first silica gel layer is further arranged on the amplitude transformer, the piezoelectric stack and the outer side of the main rod, the top end of the amplitude transformer is provided with external threads matched with an ultrasonic cutter bar, the transducer further comprises a first channel for sucking blood and smoke, the first channel extends from the upper surface of the amplitude transformer to the bottom surface of the main rod, a micro pump is arranged in the working cavity, the input end of the micro pump is communicated with the first channel, and the output end of the micro pump is communicated with the first channel through a first output port on the bottom shell, and the ultrasonic cutter bar is communicated with the first channel.
6. The novel ultrasonic blade of claim 5, wherein: a second silica gel layer is arranged between the piezoelectric ceramic stack and the connecting rod, the transducer further comprises a second channel for conveying cooling gas, the second channel extends from the upper surface of the amplitude transformer to the bottom surface of the main rod, the second channel is communicated with the outside through a second output port on the bottom shell, and a second conveying channel communicated with the second channel is arranged on the ultrasonic cutter bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810775636.1A CN108852468B (en) | 2018-07-16 | 2018-07-16 | Novel ultrasonic knife and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810775636.1A CN108852468B (en) | 2018-07-16 | 2018-07-16 | Novel ultrasonic knife and use method thereof |
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| CN108852468A CN108852468A (en) | 2018-11-23 |
| CN108852468B true CN108852468B (en) | 2023-06-27 |
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| CN201810775636.1A Active CN108852468B (en) | 2018-07-16 | 2018-07-16 | Novel ultrasonic knife and use method thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112353456B (en) * | 2020-10-10 | 2021-10-01 | 安徽医科大学第一附属医院 | Ultrasonic knife with function of preventing aerial fog from diffusing |
| CN112155671A (en) * | 2020-10-13 | 2021-01-01 | 常州安康医疗器械有限公司 | Transverse moving ultrasonic knife with offset chuck |
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| WO2016044072A1 (en) * | 2014-09-18 | 2016-03-24 | Mayo Foundation For Medical Education And Research | Soft tissue cutting device and methods of use |
| CN204293229U (en) * | 2014-11-28 | 2015-04-29 | 徐胜前 | A kind of ultrasonic surgical blade |
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| CN201320217Y (en) * | 2008-10-07 | 2009-10-07 | 王华林 | Ultrasound surgical forceps |
| JP2017515526A (en) * | 2014-03-24 | 2017-06-15 | エシコン・エンド−サージェリィ・エルエルシーＥｔｈｉｃｏｎ Ｅｎｄｏ−Ｓｕｒｇｅｒｙ， ＬＬＣ | Ultrasonic forceps |
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| CN108852468A (en) | 2018-11-23 |
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