CN116439787A - Ultrasonic cutter bar characteristic frequency and cutter head amplitude intensity adjusting method - Google Patents
Ultrasonic cutter bar characteristic frequency and cutter head amplitude intensity adjusting method Download PDFInfo
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- CN116439787A CN116439787A CN202310378234.9A CN202310378234A CN116439787A CN 116439787 A CN116439787 A CN 116439787A CN 202310378234 A CN202310378234 A CN 202310378234A CN 116439787 A CN116439787 A CN 116439787A
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- ultrasonic
- cutting
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- cutter
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000000694 effects Effects 0.000 claims abstract description 13
- 238000005452 bending Methods 0.000 claims description 15
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 4
- 238000002604 ultrasonography Methods 0.000 claims 1
- 230000008569 process Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 206010053648 Vascular occlusion Diseases 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000002169 extracardiac Effects 0.000 description 1
- 238000002682 general surgery Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002324 minimally invasive surgery Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 208000021331 vascular occlusion disease Diseases 0.000 description 1
Classifications
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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
- 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
- A61B2017/320071—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with articulating means for working tip
-
- 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
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Mechanical Engineering (AREA)
- Biomedical Technology (AREA)
- Dentistry (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention provides a method for adjusting the characteristic frequency and the amplitude intensity of a cutter head of an ultrasonic cutter bar. The method is realized by utilizing the ultrasonic surgical knife, the ultrasonic surgical knife comprises a gain cutting structure, cutting is added at a position close to the near end in the axial direction of the ultrasonic surgical knife head by the gain cutting structure, the characteristic frequency of the ultrasonic surgical knife bar can be changed by controlling the gain cutting position and the cutting angle, so that the ultrasonic surgical knife bar is closer to the working frequency of the transducer and the host machine, the amplitude of the ultrasonic surgical knife bar has a gain effect under the specific frequency, the stability of the whole ultrasonic surgical knife guided wave system is improved, the operation time is shortened, and the use efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of medical equipment, and particularly relates to an ultrasonic cutter bar characteristic frequency and cutter head amplitude intensity adjusting method.
Background
Ultrasonic scalpels are a common medical instrument in surgery. The ultrasonic surgical knife has the advantages of high cutting efficiency, good flexibility, small bleeding amount, small side effect and the like, and has good surgical effect in the use process, is widely applied to medical aspects such as general surgery, extracardiac surgery and the like, and with the progress of scientific technology, the application of the ultrasonic surgical knife gradually brings higher requirements to the performance of an ultrasonic knife bar. The ultrasonic scalpel cutter bar consists of a cutter body and a cutter head, wherein the cutter body is responsible for receiving ultrasonic energy and transmitting gain amplitude, and the cutter head is used as an execution unit to specifically cut and close. In order to increase the cutting efficiency, reduce the cutting time and improve the cutting effect, the ultrasonic knife is required to have larger amplitude gain, and meanwhile, in order to ensure that the ultrasonic knife works more stably, the working frequency of the ultrasonic knife bar is required to be more close to the frequency emitted by the transducer and the ultrasonic host. To enhance the vascular occlusion effect, it is desirable to have the ultrasonic blade cutting end provide a more stable output.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a method for adjusting the characteristic frequency of an ultrasonic cutter bar and the amplitude intensity of a cutter head.
The invention is realized by the following technical scheme, the invention provides an ultrasonic cutter bar characteristic frequency and cutter head amplitude intensity adjusting method, the adjusting method is realized by an ultrasonic surgical knife, and the ultrasonic surgical knife comprises a bending cutter head 1 and a cutter body 2; the ultrasonic scalpel cutting cutter bar device is formed by the bending cutter head 1 and the cutter body 2, ultrasonic energy is received by the cutter body 2 and transmitted to the ultrasonic bending cutter head 1 so as to realize rapid cutting and closing effects; the cutter body 2 is connected with each other through cylinders with different lengths and diameters, and different gain effects on the amplitude are realized by changing the length and diameter size proportion of the cylinders; a gain cutting structure 3 is added to the cutter body 2 to adjust the characteristic frequency of the ultrasonic scalpel cutting cutter bar; the cutting position on the curved bit 1, and the amplitude intensity of the working frequency of the cutting upper edge 4 and the cutting lower edge 5 are varied according to the position, length and cutting depth of the added gain cutting structure 3.
Further, the rear end of the blade body 2 is connected with a transducer through a stud, an electric signal with a specific frequency of 55.5kHz from an ultrasonic host is received through the transducer, the transducer is converted into ultrasonic energy through piezoelectric ceramics, and the ultrasonic energy is transmitted to the ultrasonic bending tool bit 1 through the blade body 2.
Further, the ultrasonic bending blade 1, the ultrasonic blade 2, the ultrasonic transducer and the piezoelectric ceramic center part among the ultrasonic transducers are on the same axis.
Further, the gain cutting structure 3 is arranged on the gain section of the body of the ultrasonic scalpel blade 2.
Further, the ultrasonic-surgical-blade-gain section is parallel to the axis, and is located in a range near the peak of the vibration amplitude established according to the wave speed of the ultrasonic in the medical titanium alloy.
Further, the gain section is parallel to the cut upper and lower edges 4,5 along the center.
The beneficial effects of the invention are as follows:
according to the ultrasonic surgical knife provided by the invention, the gain cutting structure is added to the knife body part, so that the frequency of the whole ultrasonic surgical knife is adjusted according to the position of the gain cutting structure, the characteristic frequency of the ultrasonic surgical knife can be more close to the working frequency of the transducer and the ultrasonic host machine due to the existence of the gain cutting structure, the three part characteristic frequencies are close, the host machine can more accurately and rapidly perform frequency tracking, the frequency can be more stably maintained, and finally, the more stable cutting and the closed energy output effect can be realized. After the gain cut structure is added, a greater gain in ultrasonic amplitude is achieved at the host and transducer operating frequencies of 55.5 kHz. The stability and the strength of the ultrasonic surgical knife are comprehensively improved, and the efficiency and the stability of the operation are improved.
Drawings
Fig. 1 is an enlarged view of the whole structure and a part of a tool bit of an ultrasonic surgical blade with a gain cutting structure according to an embodiment of the present invention.
FIG. 2 shows a comparative gain-free tool bar according to an embodiment of the present invention.
FIG. 3 is a graph of the amplitude of the lower edge of a tool bit with an added gain cutting feature according to an embodiment of the present invention.
FIG. 4 is a graph of bit bottom edge amplitude for a gain-free cutting structure according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide an ultrasonic cutter bar characteristic frequency and cutter head amplitude intensity adjusting method, which is realized by utilizing an ultrasonic scalpel with a gain cutting structure, and the method can control the vibration frequency of the whole ultrasonic cutter bar by adjusting parameters such as cutting length, width, depth, position and the like, so that the vibration frequency is more similar to the working frequency of an ultrasonic transducer and an ultrasonic main machine, the ultrasonic main machine can realize frequency tracking and frequency maintenance more accurately and rapidly, relatively less heat is generated at the working frequency, the internal dissipation of energy is ensured, the conversion and transmission efficiency of energy are improved, the amplitude intensity of the cutting surface of the ultrasonic cutter head is optimized, the stability of the whole ultrasonic scalpel guided wave system is improved, the operation time is shortened, and the use efficiency is improved.
The invention provides a method for adjusting the characteristic frequency and the amplitude intensity of a cutter head of an ultrasonic cutter bar, which is realized by an ultrasonic surgical knife, wherein the ultrasonic surgical knife comprises a bending cutter head 1 and a cutter body 2; the ultrasonic scalpel cutting cutter bar device is formed by the bending cutter head 1 and the cutter body 2, ultrasonic energy is received by the cutter body 2 and transmitted to the ultrasonic bending cutter head 1 so as to realize rapid cutting and closing effects; the cutter body 2 is connected with each other through cylinders with different lengths and diameters, and different gain effects on the amplitude are realized by changing the length and diameter size proportion of the cylinders; a gain cutting structure 3 is added to the cutter body 2 to adjust the characteristic frequency of the ultrasonic scalpel cutting cutter bar; the cutting position on the curved bit 1, and the amplitude intensity of the working frequency of the cutting upper edge 4 and the cutting lower edge 5 are varied according to the position, length and cutting depth of the added gain cutting structure 3.
The rear end of the blade body 2 is connected with a transducer through a stud, an electric signal with a specific frequency of 55.5kHz from an ultrasonic host is received through the transducer, the transducer is converted into ultrasonic energy through piezoelectric ceramics, and the ultrasonic energy is transmitted to the ultrasonic bending blade head 1 through the blade body 2.
The ultrasonic bending tool bit 1, the ultrasonic tool body 2, the ultrasonic transducer and the piezoelectric ceramic center part among the ultrasonic transducers are on the same axis.
The gain cutting structure 3 is arranged on the gain section of the main body of the ultrasonic scalpel blade 2.
The ultrasonic-surgical-blade-gain section is parallel to the axis, and is located in a range near the peak of the vibration amplitude established according to the wave speed of the ultrasonic in the medical titanium alloy.
The gain section is parallel to the cut upper and lower edges 4,5 along the centre.
Examples
The embodiment discloses an ultrasonic scalpel, which is mainly used in the related fields of surgical minimally invasive surgery and the like, and a specific structure is shown in fig. 1. The ultrasonic scalpel cutter bar comprises a cutter head 1, a cutter body 2 and a gain cutting structure 3. The ultrasonic cutter bar is designed according to the working frequency of an ultrasonic main machine and an ultrasonic transducer of 55.5kHz, the ultrasonic main machine sends out 55.5kHz sine electric signals, piezoelectric ceramics of the transducer convert into 55.5kHz vibration after receiving the electric signals, the vibration is transmitted to an ultrasonic cutter body through a transducer amplitude transformer, the amplitude is increased by cylinders with different lengths and diameters of the cutter body, and finally the cutter head part obtains a larger amplification effect, so that quick and effective cutting and closing capacity are realized. In the process, along with the increase of the excitation signal time, the change relation of the load and the mutual loss among materials, the whole characteristic frequency is shifted, so that the common maintenance of the host frequency, the transducer frequency and the ultrasonic cutter bar frequency at 55.5kHz in an initial state is very important, and the performance of the ultrasonic cutter and the stability in the use process can be greatly improved.
According to the acoustic transmission theory and the medical titanium alloy parameters, the peak position of the half wavelength of the ultrasonic wave on the ultrasonic cutter bar with the middle length of 256.8mm is determined, the gain cutting result is given at the position of 210mm, and the depth of the structure is 0.3mm and the length is 10mm. The characteristic frequency can be changed by adding the gain cutting structure, compared with the cutter bar without the gain structure shown in fig. 2, the characteristic frequency is reduced from 55642Hz to 55578Hz, and the gain cutting structure is closer to the working frequency, so that the gain cutting structure is more stable in the actual use process. And the cutting position, width, depth and length can be optimized to 55500Hz in the follow-up process, so that the output frequency of the main machine is consistent with the working frequency of the ultrasonic transducer and the frequency of the ultrasonic cutter bar under the static state, the frequency tracking and the frequency maintenance are facilitated, and the output amplitude and the actual cutting result are more stable. After the gain cutting structure is added, the amplitude of the lower edge of the cutter head with the gain structure is compared with the amplitude of the lower edge of the cutter head with the gain structure in fig. 3, and the amplitude of the lower edge of the cutter head without the gain structure in fig. 4, the maximum amplitude of the lower edge of the cutter head with the gain structure is improved from 90um to 95.8um by the gain structure, so that the cutting performance is also improved.
It is apparent that the above embodiments of the present invention are merely examples for clearly describing the actions of the present invention. And are not intended to be limiting in any way. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A method for adjusting the characteristic frequency and the amplitude intensity of a cutter head of an ultrasonic cutter bar is characterized by comprising the following steps: the adjusting method is realized by an ultrasonic surgical knife, and the ultrasonic surgical knife comprises a bending knife head (1) and a knife body (2); the ultrasonic scalpel cutting cutter bar device is formed by the bending cutter head (1) and the cutter body (2), ultrasonic energy is received by the cutter body (2) and transmitted to the ultrasonic bending cutter head (1) so as to achieve rapid cutting and closing effects; the cutter bodies (2) are connected with each other through cylinders with different lengths and diameters, and different gain effects on the amplitude are realized by changing the length and the diameter size proportion of the cylinders; a gain cutting structure (3) is added to the cutter body (2) to adjust the characteristic frequency of the ultrasonic scalpel cutting cutter bar; the cutting position on the curved cutter head (1) and the amplitude intensity of the working frequency of the cutting upper edge (4) and the cutting lower edge (5) are changed according to the difference of the position, the length and the cutting depth of the added gain cutting structure (3).
2. The adjusting method according to claim 1, characterized in that the rear end of the blade body (2) is connected with a transducer through a stud, an electric signal with a specific frequency of 55.5kHz from an ultrasonic main machine is received through the transducer, the transducer is converted into ultrasonic energy through piezoelectric ceramics, and the ultrasonic energy is transmitted to the ultrasonic bending tool bit (1) through the blade body (2).
3. The adjusting method according to claim 2, characterized in that the ultrasonic bending head (1), the ultrasonic blade (2), the ultrasonic transducer and the piezoelectric ceramic center part among the ultrasonic transducers are on the same axis.
4. A method of adjusting according to claim 3, wherein the gain cutting structure (3) is in the body gain section of an ultrasonic surgical blade body (2).
5. The method of adjusting of claim 4, wherein the ultrasonic-surgical-blade-gain section is parallel to the axis, the ultrasonic-surgical-blade-gain section being located in a range near a peak of the vibration amplitude established in accordance with the wave velocity of the ultrasound in the medical titanium alloy.
6. The adjustment method according to claim 5, characterized in that the gain section is parallel to the cutting upper and lower edges (4, 5) along the center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310378234.9A CN116439787A (en) | 2023-04-11 | 2023-04-11 | Ultrasonic cutter bar characteristic frequency and cutter head amplitude intensity adjusting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310378234.9A CN116439787A (en) | 2023-04-11 | 2023-04-11 | Ultrasonic cutter bar characteristic frequency and cutter head amplitude intensity adjusting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116439787A true CN116439787A (en) | 2023-07-18 |
Family
ID=87135106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310378234.9A Withdrawn CN116439787A (en) | 2023-04-11 | 2023-04-11 | Ultrasonic cutter bar characteristic frequency and cutter head amplitude intensity adjusting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116439787A (en) |
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2023
- 2023-04-11 CN CN202310378234.9A patent/CN116439787A/en not_active Withdrawn
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Application publication date: 20230718 |