CN108836435B - Ultrasonic knife and using method thereof - Google Patents

Ultrasonic knife and using method thereof Download PDF

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Publication number
CN108836435B
CN108836435B CN201810775640.8A CN201810775640A CN108836435B CN 108836435 B CN108836435 B CN 108836435B CN 201810775640 A CN201810775640 A CN 201810775640A CN 108836435 B CN108836435 B CN 108836435B
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China
Prior art keywords
ultrasonic
rod
channel
protective cover
amplitude transformer
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CN201810775640.8A
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Chinese (zh)
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CN108836435A (en
Inventor
邹贤
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Jiangsu Institute of Nuclear Medicine
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Jiangsu Institute of Nuclear Medicine
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Priority to CN201810775640.8A priority Critical patent/CN108836435B/en
Publication of CN108836435A publication Critical patent/CN108836435A/en
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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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/0053—Cabins, rooms, chairs or units for treatment with a hot or cold circulating fluid
    • 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
    • A61B2017/320072—Working tips with special features, e.g. extending parts
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F2007/0059—Heating or cooling appliances for medical or therapeutic treatment of the human body with an open fluid circuit
    • A61F2007/0063—Heating or cooling appliances for medical or therapeutic treatment of the human body with an open fluid circuit for cooling
    • A61F2007/0064—Heating or cooling appliances for medical or therapeutic treatment of the human body with an open fluid circuit for cooling of gas

Abstract

The invention relates to an ultrasonic knife which comprises a hand piece, a trigger positioned on the front side of the hand piece, a transducer positioned on the upper part of the hand piece, an inner pipe arranged at the front end of the hand piece, an ultrasonic knife bar arranged in the inner pipe and the end part of the ultrasonic knife bar is connected with the output end of the transducer, a knife head positioned at the front end of the ultrasonic knife bar and a chuck positioned above the knife head, wherein a protective cover capable of moving along the direction of the central shaft of the ultrasonic knife bar is arranged below the knife head. The ultrasonic knife of the invention is not easy to cause wound to normal human tissue.

Description

Ultrasonic knife and using method thereof
Technical Field
The invention relates to a medical instrument, in particular to an ultrasonic knife and a using method thereof.
Background
The ultrasonic knife is a medical instrument which utilizes an ultrasonic technology to enable a knife head to generate high-frequency vibration so as to realize the cutting of human tissues. The ultrasonic scalpel comprises an energy converter, the output end of the energy converter is connected with the ultrasonic scalpel rod through threads, during use, an operator places pre-cut human tissues between a scalpel head of the ultrasonic scalpel rod and a chuck above the scalpel head, then the chuck clamps the tissues between the scalpel head and the chuck through a trigger on a shell, and an ultrasonic switch button is turned on simultaneously, so that the human tissues are cut off under the vibration effect of the scalpel head. The cutter head of the existing ultrasonic knife is exposed, so that when a doctor cuts a tissue to be cut, the normal human tissue which is located on one side of the cutter head away from the chuck is also influenced by the vibration of the cutter head, the normal human tissue near the cutter head can be cut by the cutter head frequently, even a large wound can be generated, and the failure of the operation is further caused. At present, even doctors with abundant operation experience have difficulty causing no trauma to other tissues. In addition, the existing ultrasonic knife can generate more heat when cutting the tissue, the excessive heat can also generate adverse effect on the surrounding normal tissue, and the wound at the position of the cut tissue is not easy to coagulate.
In view of the above-mentioned drawbacks, the present designer is actively making research and innovation to create a new ultrasonic scalpel, so that the ultrasonic scalpel has industrial value.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide an ultrasonic knife which is not easy to cause wound to normal human tissues. In addition, the invention also provides a using method of the ultrasonic knife capable of reducing heat during cutting.
The ultrasonic knife comprises a hand piece, a trigger positioned on the front side of the hand piece, a transducer positioned on the upper part of the hand piece, an inner tube arranged at the front end of the hand piece, an ultrasonic knife bar arranged in the inner tube and the end part of the ultrasonic knife bar is connected with the output end of the transducer, a knife head positioned at the front end of the ultrasonic knife bar, and a chuck positioned above the knife head, wherein a protective cover capable of moving along the central axis direction of the ultrasonic knife bar is arranged below the knife head, the chuck comprises a clamping plate and upper protective wings positioned on two sides of the clamping plate, a polytetrafluoroethylene gasket is arranged on the bottom surface of the clamping plate, the protective cover comprises a bottom plate and lower protective wings positioned on two sides of the bottom plate, a heat insulation layer is arranged on the upper surface of the bottom plate, the chuck and the.
Further, according to the ultrasonic scalpel, the air cylinder is arranged below the inner tube, the cylinder body of the air cylinder is fixedly arranged on the lower surface of the inner tube, and the protective cover is fixedly arranged on the piston rod of the air cylinder.
Further, according to the ultrasonic scalpel, the cylinder body of the air cylinder and the inner pipe are integrally formed.
Further, the ultrasonic scalpel is characterized in that a sliding tube is arranged on the lower surface of the inner tube, a sliding rod is slidably arranged in the sliding tube, a handle is arranged at one end of the sliding rod, and the other end of the sliding rod is connected with the protective cover.
Furthermore, according to the ultrasonic scalpel, the front end of the hand piece is provided with the first connecting piece made of a magnetic material, one end, close to the handle, of the sliding tube is provided with the second connecting piece made of a magnetic material, the handle is located between the first connecting piece and the second connecting piece, and the handle is made of an iron material.
Further, in the ultrasonic scalpel of the present invention, the first connecting member and the second connecting member are made of a magnet.
Further, the ultrasonic scalpel of the invention 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 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, an amplitude transformer is arranged above the connecting rod, a piezoelectric ceramic stack 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 amplitude transformer, a positioning groove is arranged on 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 outer sides of the amplitude transformer, the piezoelectric stack and the main rod, an external thread matched with the ultrasonic scalpel rod is arranged at the top end of the amplitude transformer, the transducer further comprises a first channel for absorbing bloody water and smoke, and the first channel extends from the upper surface of the, the ultrasonic knife bar is characterized in that 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 outside through a first output port in the bottom shell, and a first conveying channel communicated with the first channel is arranged on the ultrasonic knife bar.
Further, the ultrasonic knife of the invention 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.
By the scheme, the invention at least has the following advantages: according to the ultrasonic scalpel, the telescopic protective cover is arranged below the scalpel head, so that a doctor can arrange the protective cover below the scalpel head when performing cutting operation on tissues, and a certain gap is formed between the scalpel head and the protective cover, so that normal tissues below the scalpel head can be prevented from being influenced by vibration of the scalpel head, and the protective cover can be retracted when the doctor searches for precut tissues, so that the scalpel head is exposed, the operation view of the doctor is not influenced, and the doctor can conveniently search for the precut tissues.
In conclusion, the ultrasonic knife of the invention is not easy to cause trauma to normal human tissues.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is a schematic structural view of an ultrasonic blade having a pneumatic cylinder;
FIG. 2 is a schematic structural view of an ultrasonic blade having a slide tube and a slide bar;
FIG. 3 is a schematic view of the chuck and shield configuration;
fig. 4 is a schematic diagram of the structure of a transducer.
In the figure, 1: a handpiece; 2: a trigger; 3: a transducer; 4: an inner tube; 5: ultrasonic cutter bar; 6: a cutter head; 7: a chuck; 8: a shield; 9: a cylinder; 10: a slide pipe; 11: a slide bar; 12: a handle; 13: a first connecting member; 14: a second connecting member; 15: a splint; 16: an upper protective wing; 17: a polytetrafluoroethylene gasket; 18: a base plate; 19: a lower protective wing; 20: a thermal insulation layer; 21: an accommodating chamber; 22: a bottom case; 23: a main rod; 24: a working chamber; 25: a connecting rod; 26: an amplitude transformer; 27: stacking piezoelectric ceramics; 28: positioning a groove; 29: a first silica gel layer; 30: a first channel; 31: a micro-pump; 32: a first conveyance path; 33: a second channel; 34: and a second conveying path.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Referring to fig. 1 to 4, an ultrasonic scalpel according to a preferred embodiment of the present invention includes a hand piece 1, a trigger 2 located at a front side of the hand piece, a transducer 3 located at an upper portion of the hand piece, an inner tube 4 located at a front end of the hand piece, an ultrasonic blade bar 5 located in the inner tube and having an end connected to an output end of the transducer, a blade head 6 located at a front end of the ultrasonic blade bar, and a collet 7 located above the blade head, wherein a shield 8 capable of moving along a central axis direction of the ultrasonic blade bar is disposed below the blade head.
According to the ultrasonic scalpel, the telescopic protective cover is arranged below the scalpel head, so that a doctor can arrange the protective cover below the scalpel head when performing cutting operation on tissues, and a certain gap is formed between the scalpel head and the protective cover, so that normal tissues below the scalpel head can be prevented from being influenced by vibration of the scalpel head, and the protective cover can be retracted when the doctor searches for precut tissues, so that the scalpel head is exposed, the operation view of the doctor is not influenced, and the doctor can conveniently search for the precut tissues.
Preferably, the ultrasonic scalpel of the present invention is provided with the cylinder 9 below the inner tube, the cylinder body of the cylinder is fixedly arranged on the lower surface of the inner tube, and the shield is fixedly arranged on the piston rod of the cylinder.
Preferably, in the ultrasonic blade of the present invention, the cylinder body of the cylinder is integrally formed with the inner tube.
The telescopic function of the protective cover is realized by the arrangement of the air cylinder.
Preferably, the ultrasonic scalpel of the invention is provided with a sliding tube 10 on the lower surface of the inner tube, a sliding rod 11 is slidably arranged in the sliding tube, one end of the sliding rod is provided with a handle 12, and the other end of the sliding rod is connected with the protective cover.
Preferably, in the ultrasonic scalpel of the present invention, the front end of the handpiece is provided with a first connecting member 13 made of a magnetic material, one end of the slide tube close to the handle is provided with a second connecting member 14 made of a magnetic material, the handle is located between the first connecting member and the second connecting member, and the handle is made of an iron material.
Preferably, in the ultrasonic blade of the present invention, the first connecting member and the second connecting member are each made of a magnet.
The arrangement of the first connecting piece and the second connecting piece realizes the positioning function of the handle, the sliding rod and the protective cover. When the ultrasonic scalpel is used specifically, when a doctor searches for precut tissues, the handle is connected with the first connecting piece, when the doctor positions the precut tissues and places the tissues between the chuck and the scalpel head, the doctor can push the handle to enable the handle to be separated from the first connecting piece and connected with the human connecting piece, the slide rod slides out towards the other end under the pushing of the handle and drives the protective cover to move below the scalpel head, then the doctor can open the ultrasonic switch to cut the tissues, and the handle is pulled after the cutting is completed, so that the handle and the protective cover return to the original position.
Preferably, the ultrasonic scalpel comprises a clamping plate 15 and upper protective wings 16 positioned on two sides of the clamping plate, a polytetrafluoroethylene gasket 17 is arranged on the bottom surface of the clamping plate, a protective cover comprises a bottom plate and lower protective wings 19 positioned on two sides of the bottom plate 18, a heat insulation layer 20 is arranged on the upper surface of the bottom plate, the clamping plate and the protective cover can surround to form a containing cavity 21, and the protective cover is made of transparent materials.
The arrangement of the heat insulation layer can prevent heat generated in the cutting process from influencing surrounding tissues. On the other hand, the arrangement of the accommodating cavity can further prevent the cutting process from influencing the surrounding tissues.
Preferably, the ultrasonic scalpel of the invention comprises a bottom shell 22, the bottom shell is a tubular structure with an opening at the top end, a main rod 23 is arranged in the bottom shell, a working cavity 24 is arranged between the bottom surface of the main rod and the bottom wall of the bottom shell, a connecting rod 25 is arranged on the top surface of the main rod, an amplitude transformer 26 is arranged above the connecting rod, a piezoelectric ceramic stack 27 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 amplitude transformer, a positioning groove 28 is arranged on 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 29 is further arranged outside the amplitude transformer, the piezoelectric stack and the main rod, the top end of the amplitude transformer is provided with an external thread matched with the ultrasonic knife rod, the transducer further comprises a first channel 30 for absorbing blood and smoke, be provided with micropump 31 in the working chamber, the input and the first passageway intercommunication of micropump, the output of micropump is through first delivery outlet and outside intercommunication on the drain pan, is provided with the first transfer passage 32 with first passageway intercommunication on the supersound cutter arbor.
The setting of first passageway for the doctor can absorb the outside through micropump with the bloody water or fog around the tissue at the tissue cutting in-process, thereby has made things convenient for operating personnel to the cutting of tissue.
Preferably, the ultrasonic scalpel of the present invention further comprises a second channel 33 for conveying cooling gas, the second channel extends from the upper surface of the horn 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 34 communicated with the second channel is arranged on the ultrasonic scalpel rod.
The setting of second passageway for the doctor can cross through the second passageway to organize department and carry the cold source when cutting the tissue, thereby carries out certain cooling to it, prevents that the heat is overheated to organize the production influence on every side, promotes the condensation of wound simultaneously.
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.
The doctor can cross through second passageway and carry the cold source to tissue department when cutting the tissue to carry out certain cooling to it, prevent that the heat is overheated to produce the influence to surrounding tissue, promote the condensation of wound simultaneously.
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 attributes 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.
In addition, the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention. Also, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (8)

1. The utility model provides an ultrasonic scalpel, includes the hand-held piece, is located the trigger of hand-held piece front side, is located the transducer on hand-held piece upper portion, locates the inner tube of hand-held piece front end, locate the interior and the supersound cutter arbor that the tip is connected with the transducer output end of inner tube, be located the tool bit of supersound cutter arbor front end, be located the chuck of tool bit top, its characterized in that: the cutter head is characterized in that a protective cover capable of moving along the axial direction of the middle shaft of the ultrasonic cutter bar is arranged below the cutter head, the chuck comprises a clamping plate and upper protective wings positioned on two sides of the clamping plate, a polytetrafluoroethylene gasket is arranged on the bottom surface of the clamping plate, the protective cover comprises a bottom plate and lower protective wings positioned on two sides of the bottom plate, a heat insulation layer is arranged on the upper surface of the bottom plate, the chuck and the protective cover can surround to form a containing cavity, and the protective cover is made of transparent materials.
2. The ultrasonic blade of claim 1, wherein: the cylinder is arranged below the inner tube, the cylinder body of the cylinder is fixedly arranged on the lower surface of the inner tube, and the protective cover is fixedly arranged on a piston rod of the cylinder.
3. The ultrasonic blade of claim 2, wherein: the cylinder body of the cylinder and the inner pipe are integrally formed.
4. The ultrasonic blade of claim 1, wherein: the lower surface of the inner tube is provided with a sliding tube, a sliding rod is slidably arranged in the sliding tube, one end of the sliding rod is provided with a handle, and the other end of the sliding rod is connected with the protective cover.
5. The ultrasonic blade of claim 4, wherein: the front end of the hand piece is provided with a first connecting piece made of a magnetic material, one end of the sliding pipe, close to the handle, is provided with a second connecting piece made of a magnetic material, the handle is located between the first connecting piece and the second connecting piece, and the handle is made of an iron material.
6. The ultrasonic blade of claim 5, wherein: the first connecting piece and the second connecting piece are both made of magnets.
7. The 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 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, 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 ceramic stack is positioned between the main rod and the amplitude transformer, a positioning groove is arranged on 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 outer sides of the amplitude transformer, the piezoelectric stack and the main rod, an external thread matched with the ultrasonic cutter rod is arranged at the top end of the amplitude transformer, the transducer further comprises a first channel used for absorbing blood and smoke, and the first channel extends to the bottom surface of the main, the ultrasonic knife bar is characterized in that 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 outside through a first output port in the bottom shell, and a first conveying channel communicated with the first channel is arranged on the ultrasonic knife bar.
8. The ultrasonic blade of claim 7, wherein: 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 in the bottom shell, and a second conveying channel communicated with the second channel is arranged on the ultrasonic cutter bar.
CN201810775640.8A 2018-07-16 2018-07-16 Ultrasonic knife and using method thereof Active CN108836435B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810775640.8A CN108836435B (en) 2018-07-16 2018-07-16 Ultrasonic knife and using method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810775640.8A CN108836435B (en) 2018-07-16 2018-07-16 Ultrasonic knife and using method thereof

Publications (2)

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CN108836435A CN108836435A (en) 2018-11-20
CN108836435B true CN108836435B (en) 2020-05-15

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004041780A (en) * 2003-10-27 2004-02-12 Olympus Corp Ultrasonic cutting and coagulation device
US9259234B2 (en) * 2010-02-11 2016-02-16 Ethicon Endo-Surgery, Llc Ultrasonic surgical instruments with rotatable blade and hollow sheath arrangements
US10034684B2 (en) * 2015-06-15 2018-07-31 Ethicon Llc Apparatus and method for dissecting and coagulating tissue
CN107007370A (en) * 2017-05-23 2017-08-04 乔元秀 Multi-functional dental body processing unit

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