CN1076626C - Device for breaking stone by laser - Google Patents
Device for breaking stone by laser Download PDFInfo
- Publication number
- CN1076626C CN1076626C CN 98112977 CN98112977A CN1076626C CN 1076626 C CN1076626 C CN 1076626C CN 98112977 CN98112977 CN 98112977 CN 98112977 A CN98112977 A CN 98112977A CN 1076626 C CN1076626 C CN 1076626C
- Authority
- CN
- China
- Prior art keywords
- laser
- laser instrument
- feedback signal
- calculus
- computer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000004575 stone Substances 0.000 title abstract description 12
- 239000013307 optical fiber Substances 0.000 claims description 27
- 239000000835 fiber Substances 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 7
- 238000002604 ultrasonography Methods 0.000 claims description 7
- 239000000919 ceramic Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000008054 signal transmission Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract 1
- 230000002950 deficient Effects 0.000 description 5
- 230000035939 shock Effects 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 210000003708 urethra Anatomy 0.000 description 2
- 102000001554 Hemoglobins Human genes 0.000 description 1
- 108010054147 Hemoglobins Proteins 0.000 description 1
- 206010020772 Hypertension Diseases 0.000 description 1
- 208000000913 Kidney Calculi Diseases 0.000 description 1
- 206010029148 Nephrolithiasis Diseases 0.000 description 1
- 229910004283 SiO 4 Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 201000001883 cholelithiasis Diseases 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002504 lithotomy Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Surgical Instruments (AREA)
- Laser Surgery Devices (AREA)
Abstract
A laser stone breaking device capable of identifying stones is adopted by combining a stone identification method, stones and human tissues can be distinguished, the output of a laser can be automatically controlled by a computer, and stone breaking is completed, so that the laser stone breaking technology is realized in clinical application, the defects of large damage area, side effect, low stone breaking speed, narrow application range, high treatment cost and the like in the prior art can be overcome, and the device has the advantages of simple structure, convenience in operation, safety and reliability.
Description
The invention belongs to the improvement of armarium, relate to field of photoelectric technology.
The method of present broken calculus has many, and 1. ultrasonic rubble is by endoscope tinsel to be penetrated on the calculus by urethra, and the ultrasound wave that produces by spark smashes calculus.Its defective is a narrow application range, must carry out under visible the supervision, also needs irrigation constantly simultaneously, and rubble is discharged; 2. electrohydraulic lithotripsy is by endoscope electrode to be imported to aim at calculus in the body, by spark calculus is pulverized, and its defective is with 1. identical, and causes the damage of body tissue easily; 3. extracorporeal shock-wave lithotomy, be by spark or the shock wave that utilizes piezoelectric transducer to produce external, under the supervision of X-ray, the energy accumulating of shock wave is made its pulverizing in calculus, the efficient of comparing it with the first two kind method is higher, but still have following problem, narrow application range, painful big, because rubble embeds human organ easily causes hypertension and can leave sequela, and rubble speed is slow, expense is high, equipment complex operations inconvenience and maintenance difficulty.
People discover and utilize laser lithotripsy can overcome many defectives in the existing method many years ago, its lithotrity effect is fine, the principle of laser lithotripsy is, its surperficial free electron forms plasma after calculus absorbs laser energy, along with the increase of potential energy, the plasma generation shock wave that expands rapidly, shock wave makes calculus surfaces produce cavitation bubble with ultrasonic frequency, along with constantly breaking of cavitation bubble, make calculus promptly be pulverized.But because laser instrument can't discern calculus and tissue, then cause the damage of body tissue easily,, also make the method for laser lithotripsy can be imperfect so the laser lithotripsy technology is restricted in Clinical Application.The applicant's CN98112978.1 patent application proposes a kind of method of discerning calculus and tissue, it is that the fluorescent radiation signal that is produced by the laser irradiation calculus and the detection of two feedback signals of ultrasonic signal are combined, discern calculus and tissue, thereby make laser lithotripsy become possibility in Clinical Application.
Purpose of the present invention is exactly to design a kind of device of laser fracturing calculus in conjunction with described recognition methods, makes the laser lithotripsy method more perfect in clinical practice, makes it to have safe and reliable advantage, and can overcome the defective in the existing lithotripsy method.
The technical scheme of the designed laser fracturing calculus of the present invention device is as follows, adopts the working optical fibre of being made up of two optical fiber at least, and wherein one is laser transmission fiber, and its optical fiber connector is coupled in laser instrument, and laser instrument is controlled by computer; Another root is a fluorescence feedback signal Transmission Fibers, and its optical fiber connector head is connected with optical-electrical converter (O/E), and the signal of telecommunication after the conversion is sent into computer through processing and amplifying; And being provided with piezoelectric ceramic ring at the end of arbitrary optical fiber, the signal of telecommunication of its generation is sent into computer through processing and amplifying; In computer, be provided with the system program of feedback signal identification and laser instrument control, and calculate function the power supply and the energy output control of laser instrument are adjusted; Behind stone location location in the working optical fibre importing body, when laser instrument output low energy laser shines target along laser fiber by the output of working optical fibre termination, computer receive arbitrary feedback signal of the fluorescence signal that produces and ultrasonic signal, promptly adjust laser output high energy laser and carry out rubble, simultaneous computer continues receiving feedback signals, does not cut off laser immediately in case receive any feedback signal; Power 〉=the 10mJ of its low-energy laser.Feature of the present invention also is, the workflow of described system program is, work system starts, in importing body, the working optical fibre termination behind the location, opens sense switch, laser works output low-energy laser, pick up counting simultaneously, do not receive any feedback signal in setting-up time Nei Ruo system, then laser is cut off, and again calculus is sought in the working optical fibre location; If receive the fluorescence feedback signal in setting-up time, system adjusts laser instrument output high energy laser and carries out rubble, does not have or not the ultrasound wave feedback signal as if receiving that the fluorescence feedback signal is then inquired, if then laser instrument output high energy laser rubble is arranged; Be not subjected to the restriction of setting-up time at high energy output rubble state laser instrument, but be subjected to the restriction of feedback signal.
By as can be seen above-mentioned, the present invention is in conjunction with the designed device with the laser fracturing calculus of the identification of calculus and tissue, be that calculus identification is one laser aid blank with rubble, can discern calculus with instrument and equipment, finish the fragmentation of calculus by the output of computer controlled automatic laser instrument, the laser lithotripsy technology is become a reality in Clinical Application, not only overcome in the prior art damage surface big, defectives such as side effect, rubble speed are slow, narrow application range, medical expense height are arranged, and have simple in structure, easy to operate, safe and reliable advantage.
Describe the concrete enforcement and the requirement of technical solution of the present invention in detail below in conjunction with accompanying drawing.
Accompanying drawing 1 is the designed structural representation that can discern the laser lithotripsy device of calculus of the present invention, and 1 is working optical fibre among the figure, and 2 is fluorescence feedback signal Transmission Fibers, and 3 is laser transmission fiber, and 4 is piezoelectric ceramic ring; Accompanying drawing 2 is the workflow diagram of the designed system program of the present invention.
Referring to accompanying drawing 1, the device that utilizes the laser fracturing calculus that the present invention proposes adopts the laser aid that the identification calculus is arranged, it adopts the working optical fibre of being made up of two optical fiber at least, the termination of working optical fibre can be made into taper or spherical, wherein laser transmission fiber is selected silica fibre, core diameter is 0.2-0.4mm, and optical fiber connector is coupled in laser instrument; Computer to the control table of laser instrument now to the control and the adjustment of power supply and current/voltage, computer adopts common single board computer just enough, even adopt commercially available panel adding to programme and also can finish function of the present invention, alleged here computer is general reference; Used laser instrument is selected the repetition rate solid state laser of stable performance.(as Cr
3+: LiSAF, Ti
3+: Al
2O
3, Cr
3+: Mg
2SiO
4Deng), and requiring pulse width tunable, the power density during rubble is 0.5-6MW/cm
2The core diameter of another root fluorescence feedback signal Transmission Fibers is 0.1-0.2mm, for strengthening the fluorescence feedback signal, 1-5 of the quantity that can increase this optical fiber be arranged in laser fiber around, from the end of working optical fibre two type optical fibers are separated, the terminal head of fluorescence signal optical fiber is connected with the PIN optical-electrical converter, the signal of telecommunication after the conversion is sent into computer after amplifying circuit is handled, on arbitrary optical fiber, can both receive the ultrasound wave feedback signal, among the figure piezoelectric ceramic ring is arranged on the laser fiber, piezoelectric ceramics receives that the signal of telecommunication that the ultrasound wave feedback signal produces sends into computer after amplifying circuit is handled; Be connected to the control panel of operation usefulness on computers.
The feedback signal identification that in computer, is provided with and the system program of laser instrument control, its operation and workflow are referring to accompanying drawing 2, work system starts back laser instrument preheating, working optical fibre can import stone location in the body by means of instruments such as X-ray or B ultrasonic, open sense switch behind the location, laser instrument output is low-yield, and (〉=10mJ) laser picks up counting simultaneously, 1-2 seconds Nei Ruo systems that set do not receive any feedback signal then laser be cut off, need working optical fibre is reorientated the searching calculus; Open sense switch once more, (power density is 0.5～6MW/cm to system's adjustment laser instrument output high-energy when receiving the fluorescence feedback signal in setting-up time
2) laser lithotripsy, do not have or not the ultrasound wave feedback signal as if receiving that the fluorescence feedback signal is then inquired, if then laser instrument output superlaser rubble is arranged; Laser instrument is not limited by setting-up time when laser lithotripsy, but is subjected to the restriction of feedback signal, in case do not receive any feedback signal, system cuts off laser immediately.Because the difference of calculus composition and classification can produce difference to the effect of laser lithotripsy, promptly according to the calculus of different components classification, adjusts the power and the pulsewidth of laser when rubble, can improve the effect of rubble; So in system program, also can be provided with the content of the identification and the instruction of calculus classification, be that single ultrasound wave feedback signal is a calculus of urethra, single fluorescence feedback signal is a cholelithiasis, and two all promising renal calculuss of feedback signal, after system identification goes out the calculus classification, the instruction of sending makes laser instrument export by corresponding requirement, and this corresponding requirements is the combination of the best power that needs during at rubble of the different classes of calculus that obtains through experiment, pulsewidth, frequency.
As can be seen, the efficient of laser lithotripsy is removed outside the Pass characteristic with calculus itself has, and also with the selection of laser instrument and some parameters of laser much relations is arranged.Laser instrument can satisfy by the selection of aforementioned requirement, but is not that other laser instrument just can not adopt, and also can use as the Nd:YAG laser instrument.The pulsewidth of laser is arranged on the tunable range of 10～90 microseconds, its adjustment is to be foundation with the calculus kind, generally is the shallow then broad of calculus color, and color depth then pulsewidth is just narrow, more little its energy of pulsewidth is big more, and the adjustment of pulsewidth is to finish by the voltage adjustment to the laser instrument Q-switch; The repetition rate of laser is arranged on 10～20Hz, and the principle of its adjustment is greatly then frequency height of calculus, and is little then low, and its adjustment is to finish by the adjustment to supply frequency; The power density of laser lithotripsy is chosen in 0.5～6MW/cm
2Scope, it is to control by the adjustment of laser work voltage, rule is to reduce power density as much as possible under the prerequisite of crushed stone; Because laser absorption of water and hemoglobin when 650～950nm wave band is all very little, so this wave band is the first-selected wave band of laser lithotripsy, but does not mean that its all band just can not adopt.For the adjustment of laser parameter be controlled in the prior art quite ripely, no longer describe in detail here.
After laser lithotripsy finishes, rubble liquid is discharged, also washed with conduit.Generally speaking, pulverize a stone and can not surpass 20 minutes, then need a few minutes the soonest.
Claims (4)
1. the device of a laser fracturing calculus, employing has working optical fibre, laser instrument, optical-electrical converter, piezoelectric ceramics, signal processing circuit and computer, it is characterized in that, adopt the working optical fibre of forming by two optical fiber at least, wherein one is laser transmission fiber, its optical fiber connector is coupled in laser instrument, and laser instrument is controlled by computer; Another root is a fluorescence feedback signal Transmission Fibers, and its optical fiber connector head is connected with optical-electrical converter, and the signal of telecommunication after the conversion is sent into computer after the signal processing circuit processing and amplifying; And being provided with piezoelectric ceramic ring at the end of arbitrary optical fiber, the signal of telecommunication of its generation is sent into computer after the signal processing circuit processing and amplifying; In computer, be provided with the system program of feedback signal identification and laser instrument control, and calculate function the power supply and the energy output control of laser instrument are adjusted.
2. device according to claim 1, it is characterized in that, the operation of described system program and workflow are, work system starts, open sense switch, laser works output low-energy laser picks up counting simultaneously, do not receive any feedback signal in setting-up time Nei Ruo system, then laser is cut off; If in setting-up time, receive the fluorescence feedback signal, system adjusts laser instrument output high energy laser and carries out rubble, do not have or not the ultrasound wave feedback signal as if receiving that the fluorescence feedback signal is then inquired, if then laser instrument output high energy laser rubble is arranged, only be subjected to the restriction of feedback signal at high energy output rubble state laser instrument.
3. device according to claim 2 is characterized in that, described laser instrument is selected the repetition rate solid state laser of stable performance, the requirement pulse width is tunable, the repetition rate of laser is 10～20Hz during rubble, and is tunable in pulsewidth 10～90 microsecond scopes, power density 0.5～6MW/cm
2Wavelength 650～950nm; The power of its low-energy laser is 〉=10mJ.
4. according to claim 2 or 3 described devices, it is characterized in that, in system program, also be provided with the identification of calculus classification and the content of the corresponding output parameter of laser instrument, it is to rely on the type of feedback signal to determine the classification of calculus, and carries out rubble according to the laser that different classes of calculus instruction laser instrument is exported relevant parameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98112977 CN1076626C (en) | 1998-09-25 | 1998-09-25 | Device for breaking stone by laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98112977 CN1076626C (en) | 1998-09-25 | 1998-09-25 | Device for breaking stone by laser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1249198A CN1249198A (en) | 2000-04-05 |
| CN1076626C true CN1076626C (en) | 2001-12-26 |
Family
ID=5222764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98112977 Expired - Fee Related CN1076626C (en) | 1998-09-25 | 1998-09-25 | Device for breaking stone by laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1076626C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9254075B2 (en) * | 2014-05-04 | 2016-02-09 | Gyrus Acmi, Inc. | Location of fragments during lithotripsy |
| TW201544076A (en) * | 2014-05-27 | 2015-12-01 | Lite Med Inc | Calculus aiming and locking system |
| CN106137388A (en) * | 2015-04-22 | 2016-11-23 | 上海瑞柯恩激光技术有限公司 | Holmium laser therapy instrument |
| CN108652707B (en) * | 2017-03-31 | 2020-08-11 | 宝健科技股份有限公司 | Calculus aiming system |
| CN115804628B (en) * | 2022-07-26 | 2024-02-13 | 鑫易舟(上海)医疗器械有限公司 | Medical device, control method thereof, IVL system and energy adjustment system |
-
1998
- 1998-09-25 CN CN 98112977 patent/CN1076626C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1249198A (en) | 2000-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102264434B (en) | The medical procedure of induced with laser steam/plasma-mediated and device | |
| Fried | Thulium fiber laser lithotripsy: An in vitro analysis of stone fragmentation using a modulated 110‐watt Thulium fiber laser at 1.94 µm | |
| US5860972A (en) | Method of detection and destruction of urinary calculi and similar structures | |
| RU2096051C1 (en) | Apparatus for laser treatment of biological tissues (alternative embodiments) | |
| ATE211008T1 (en) | DEVICE FOR PERFORMING EYE SURGERY | |
| ES8900035A1 (en) | Infrared laser catheter apparatus. | |
| CN104619281A (en) | Surgical laser systems and laser lithotripsy techniques | |
| JPH02500883A (en) | How to remove cavities and dentin from teeth and how to remove soft tissue | |
| CN1076626C (en) | Device for breaking stone by laser | |
| Delacretaz et al. | Importance of the implosion of ESWL-induced cavitation bubbles | |
| US20080262483A1 (en) | Method for removing permanent tissue markings | |
| CN111544112B (en) | Holmium laser ultrasonic stone crushing and removing device | |
| CA1269717A (en) | Use of lasers to break down objects for removal from within the body | |
| US20040225283A1 (en) | System and method for pulverizing stones and scar removal in soft tissues | |
| CN208511211U (en) | A kind of laser dentistry therapy instrument | |
| EP0167670B1 (en) | Device for comminuting concrements inside a living body | |
| CN203724216U (en) | Lithotripsy system with combination of lasers and ultrasonic waves | |
| CN1249162A (en) | Safety method for identifying calculus and human tissue | |
| CN212587853U (en) | Thulium laser medical solid laser with continuous and pulse output | |
| CN107497062A (en) | Focusing ultrasound fat melting system based on noninvasive temperature monitoring | |
| WO1999055243A1 (en) | Apparatus for and method of laser surgery of hard tissues | |
| Watson et al. | Laser fragmentation of urinary calculi | |
| CN220692520U (en) | Solid pulse laser medical laser and medical equipment | |
| CN116421305B (en) | Laser surgery control system, coupling system and laser surgery equipment | |
| SU1690717A1 (en) | Device for destruction and resection of biologic tissue |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |