CN108670546B - Cornea cutting knife for realizing longitudinal and bending two-dimensional ultrasonic vibration by utilizing guided wave transmission - Google Patents
Cornea cutting knife for realizing longitudinal and bending two-dimensional ultrasonic vibration by utilizing guided wave transmission Download PDFInfo
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- CN108670546B CN108670546B CN201810517330.6A CN201810517330A CN108670546B CN 108670546 B CN108670546 B CN 108670546B CN 201810517330 A CN201810517330 A CN 201810517330A CN 108670546 B CN108670546 B CN 108670546B
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- 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
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
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- 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
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
- A61F9/008—Methods or devices for eye surgery using laser
- A61F2009/00861—Methods or devices for eye surgery using laser adapted for treatment at a particular location
- A61F2009/00872—Cornea
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Abstract
The utility model provides an utilize guided wave transmission to realize buckling two-dimensional ultrasonic vibration's cornea cutting knife, relates to cornea ultrasonic cutting device. The ultrasonic wave guide device is provided with an energy converter, a wave guide line welding tool head, a tool handle and a bending blade; the output end surface of the knife handle is provided with a blade groove, and the bent blade is welded and bonded in the blade groove of the knife handle so as to be connected with the knife handle; the inner side and the outer side of the bending blade are provided with cutting edges, the wave guide line is welded and bonded with the transducer and the wave guide line welding tool head respectively, and the wave guide line welding tool head is screwed on the knife handle, so that the longitudinal ultrasonic vibration energy of the transducer is transmitted to the bending blade through the wave guide line. The small-deformation cutting of the corneal tissue can be realized, the cut is smooth, and the drilling and cutting depth can be accurately controlled. The guided wave transmission mode is introduced, so that the propagation of the waves in the guided wave line can be propagated by ideal longitudinal vibration waves, and the influence of the waves with different frequencies generated in the line due to the frequency dispersion effect on the elliptical vibration cutting of the tool head is avoided.
Description
Technical Field
The invention relates to a corneal ultrasonic cutting device, in particular to a corneal cutting knife which can replace the existing manual trephine mode and introduce a guided wave transmission ultrasonic vibration mode and is different from the traditional ultrasonic device and realizes longitudinal and bending two-dimensional ultrasonic vibration by utilizing guided wave transmission.
Background
The traditional manual ring cutting needs to be trained for a long time, cuts are not smooth, and the ring cutting depth cannot be ensured due to the viscoelastic and super-elastic characteristics of corneal tissues, although the laser cutting has high precision, the laser cutting has certain risk to an eyeball, such as a femtosecond laser in the corneal transplantation operation, the problems of unsafety (damage to the internal tissues of eyes), instability (the diseased cornea influences laser energy), limitation (the case that the diseased cornea needs negative pressure suction and is not suitable for perforation of the cornea) and the like (① paragraph of great skill, Nanjing university; ② laughing Liu aerospace university; 2008; ③ S W, Parolway P, Party surgery, resource P, and the like) are more difficult to control the head of the traditional Boynready ultrasonic operation and Murray ultrasonic operation (the ultrasonic head cutting mode of the ultrasonic surgical operation) than the traditional ultrasonic wave 2-539 ultrasonic cutting method of the Boynlaser, 2-539 ultrasonic head cutting method (Murray-3).
Disclosure of Invention
The invention aims to provide a cornea cutting knife which can replace the existing manual trephine mode and introduce a guided wave transmission ultrasonic vibration mode and is different from the traditional ultrasonic device and realizes longitudinal bending two-dimensional ultrasonic vibration by utilizing guided wave transmission.
The invention is provided with an energy converter, a wave guide wire welding tool head, a knife handle (or called as a vibration tool head) and a bending blade; the output end surface of the knife handle is provided with a blade groove, and the bent blade is welded and bonded in the blade groove of the knife handle so as to be connected with the knife handle; the inner side and the outer side of the bending blade are provided with cutting edges, the wave guide line is welded and bonded with the transducer and the wave guide line welding tool head respectively, and the wave guide line welding tool head is screwed on the knife handle, so that the longitudinal ultrasonic vibration energy of the transducer is transmitted to the bending blade through the wave guide line.
The transducer is in the form of longitudinal vibration.
When the tool is used, the tool handle and the bending blade are welded and bonded, the wave guide line and the wave guide line welding tool head are welded and bonded, and then the wave guide line welding tool head is screwed on the tool handle. The longitudinal vibrations generated by the transducer induce a bending vibration component of the blade by the bending shape of the blade, the vibration trajectory of the bending blade tip being composed of two vibration directions. Compared with the manual corneal deep lamella drilling and cutting by using a corneal trephine, the corneal deep lamella drilling and cutting device can realize small-deformation cutting of corneal tissues, has smooth cut and can accurately control the drilling and cutting depth. The guided wave transmission mode is introduced, so that the propagation of the waves in the guided wave line can be propagated by ideal longitudinal vibration waves, and the influence of the waves with different frequencies generated in the line due to the frequency dispersion effect on the elliptical vibration cutting of the tool head is avoided.
Drawings
FIG. 1 is a schematic view of an embodiment and assembly of the present invention.
Fig. 2 is a schematic view of a waveguide structure.
Fig. 3 is a sectional view taken along line a-a of fig. 2.
Figure 4 is a micrograph of a section of a cornea cut with an artificial trephine and an ultrasonic blade. In FIG. 4, panel (a) is an artificial trephine, the staining image of corneal histological sections was magnified by x 40 and x 100; fig. (b) is an ultrasonic blade. The magnification of the staining image of the corneal histological section is multiplied by 50 and 100;
Detailed Description
The following examples will further illustrate the present invention with reference to the accompanying drawings.
As shown in fig. 1, the embodiment of the present invention is provided with a transducer 6, a wave guide wire 5, a wave guide wire welding tool head 4, a tool shank 3 and a bending blade 2; a blade groove is formed in the output end face of the cutter handle 3, and the bent blade 2 is welded and bonded in the blade groove of the cutter handle 3, so that the bent blade 2 is connected with the cutter handle 3; the inside and outside both sides of crooked blade 2 all have the blade, wave guide line 5 welds with transducer 6 and wave guide line welding tool head 4 respectively and bonds, and wave guide line welding tool head 4 is screwed up on the handle of a knife, makes the transmission of the vertical ultrasonic vibration energy of transducer 6 to crooked blade 2 through wave guide line 5. In fig. 1, the arrows indicate the vibration direction.
The transducer 6 is in the form of longitudinal vibration.
The invention relates to a two-dimensional ultrasonic vibration device for carrying out ultrasonic cutting on a cornea by utilizing a bent blade for transmitting ultrasonic by guided waves. On the premise of ensuring the connection strength, other connection methods can be used besides the welding method mentioned in the invention. The dimensions of the tool shank and the bent blade shown in fig. 1 were obtained by finite element analysis. When the ultrasonic power supply is turned on, the longitudinal ultrasonic vibration generated on the transducer is transmitted to the bent blade through the wave guide line, so that the two-dimensional vibration of the tool nose is caused. The small deformation cutting of the corneal tissue can be realized by adjusting the parameters of power input excitation, and the feeding depth of the vibrating knife tip is the cutting depth, so that the drilling and cutting depth in the corneal deep lamellar transplantation can be accurately controlled.
The method of use of the invention is given below:
when the tool is used, the tail of the bent blade is fixed in the blade groove on the end face of the tool handle, the tool handle and the bent blade are welded and bonded, and the bonding strength of the tool handle and the bent blade is ensured. When the cornea is cut, the ultrasonic power supply is turned on, the longitudinal vibration generated on the transducer is transmitted to the vibration tool head through the wave guide line, and the bending vibration component of the tool tip is caused due to the bending shape of the bending blade, so that the two-dimensional vibration of the tool tip is realized. As shown in fig. 1, the two-dimensional elliptical vibration trace 1 of the tip, the longitudinal vibration generated by the transducer connected to the tool shank causes the two-dimensional bending vibration of the tip by bending the curved shape of the blade. As shown in fig. 2 and 3, compared with the conventional artificial trephine for deep lamellar drilling and cutting of the cornea, by adjusting the excitation parameters of the ultrasonic power supply, the small-deformation cutting of the corneal tissue by the hilt can be realized, the incision is smooth, and the drilling and cutting depth can be accurately controlled. The introduction of the guided wave line enables the knife handle and the transducer to be separated spatially, and compared with the traditional ultrasonic cutting mode, the ultrasonic cornea girdling knife introducing the guided wave transmission ultrasonic vibration mode has the advantages of being small in size, strong in controllability and high in tool bit tip response precision.
The comparison of the section microscopic image of the cornea cut by the artificial trephine and the ultrasonic knife is shown in fig. 4.
The invention is characterized in that: the bending blade is adopted to enable the cutter to generate bending vibration component, so that two-dimensional ultrasonic vibration is realized, compared with manual circular cutting, the ultrasonic cutter has small cutting deformation on corneal tissue and smooth cut, and accurate control on drilling and cutting depth can be realized; the guided wave transmission ultrasonic vibration mode is introduced, and compared with the traditional ultrasonic cutting system, the guided wave transmission ultrasonic cornea girdling knife has the advantages of miniaturization, strong controllability and high tip response precision of a knife head.
Claims (4)
1. The utility model provides an utilize guided wave transmission to realize buckling two-dimensional ultrasonic vibration's cornea cutting knife which characterized in that: the ultrasonic wave guide device is provided with an energy converter, a wave guide line welding tool head, a tool handle and a bending blade;
the transducer is welded and bonded at one end of the guided wave line;
the other end of the guided wave wire is welded and adhered with the guided wave wire welding tool head;
the wave guide wire welding tool head is screwed on the tool handle;
the tool handle is provided with an output end face, a blade groove is formed in the output end face, and the bending blade is welded and bonded in the blade groove of the tool handle so as to be connected with the tool handle;
the longitudinal ultrasonic vibration energy of the transducer is transmitted to the bending blade through the wave guide line;
adjusting the input excitation parameters of an ultrasonic power supply to realize the small deformation cutting of the corneal tissue, wherein the feeding depth of the vibrating knife tip is the cutting depth, and the drilling and cutting depth in the corneal deep lamellar transplantation operation is controlled.
2. The corneal cutting knife of claim 1, further comprising a guide wave transmission device for transmitting ultrasonic waves to the cornea for longitudinal bending and two-dimensional ultrasonic vibration, wherein: the transducer adopts a longitudinal vibration mode, when the cornea is cut, longitudinal vibration generated on the transducer is transmitted to the vibration tool head through a wave guide line, and bending vibration components of the tool tip are caused due to the bending shape of the bending blade, so that the two-dimensional vibration of the tool tip is realized.
3. The corneal cutting knife of claim 1, further comprising a guide wave transmission device for transmitting ultrasonic waves to the cornea for longitudinal bending and two-dimensional ultrasonic vibration, wherein: the knife handle is a vibration tool head.
4. The corneal cutting knife of claim 1, further comprising a guide wave transmission device for transmitting ultrasonic waves to the cornea for longitudinal bending and two-dimensional ultrasonic vibration, wherein: controlling the longitudinal vibration of the curved blade controls the cutting deformation and incision of the corneal tissue.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810517330.6A CN108670546B (en) | 2018-05-25 | 2018-05-25 | Cornea cutting knife for realizing longitudinal and bending two-dimensional ultrasonic vibration by utilizing guided wave transmission |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810517330.6A CN108670546B (en) | 2018-05-25 | 2018-05-25 | Cornea cutting knife for realizing longitudinal and bending two-dimensional ultrasonic vibration by utilizing guided wave transmission |
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| Publication Number | Publication Date |
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| CN108670546A CN108670546A (en) | 2018-10-19 |
| CN108670546B true CN108670546B (en) | 2020-05-15 |
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| CN116663200B (en) * | 2023-07-25 | 2023-10-20 | 中国航发四川燃气涡轮研究院 | Method and device for screening blades of integral impeller of compressor with controllable frequency dispersion |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101804575A (en) * | 2010-03-05 | 2010-08-18 | 清华大学 | Elliptical ultrasonic vibration auxiliary cutting device with adjustable track |
| CN107042198A (en) * | 2017-01-18 | 2017-08-15 | 皮钧 | A kind of two dimensional ultrasonic vibration processing unit (plant) based on guide wire |
| CN107042422A (en) * | 2017-02-21 | 2017-08-15 | 皮钧 | A kind of torsional ultrasonic processing unit (plant) based on guide wire |
| CN107234446A (en) * | 2017-08-09 | 2017-10-10 | 东北大学 | A kind of ultrasonic vibration cutting work head |
| CN107847388A (en) * | 2015-08-12 | 2018-03-27 | 天津瑞奇外科器械股份有限公司 | The ultrasonic surgical blade head of bending |
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- 2018-05-25 CN CN201810517330.6A patent/CN108670546B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101804575A (en) * | 2010-03-05 | 2010-08-18 | 清华大学 | Elliptical ultrasonic vibration auxiliary cutting device with adjustable track |
| CN107847388A (en) * | 2015-08-12 | 2018-03-27 | 天津瑞奇外科器械股份有限公司 | The ultrasonic surgical blade head of bending |
| CN107042198A (en) * | 2017-01-18 | 2017-08-15 | 皮钧 | A kind of two dimensional ultrasonic vibration processing unit (plant) based on guide wire |
| CN107042422A (en) * | 2017-02-21 | 2017-08-15 | 皮钧 | A kind of torsional ultrasonic processing unit (plant) based on guide wire |
| CN107234446A (en) * | 2017-08-09 | 2017-10-10 | 东北大学 | A kind of ultrasonic vibration cutting work head |
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