EP0911804A2 - System zur automatischen Einstellung des Elektordenabstandes einer Funkenstrecke bei elektrohydraulischen Stosswellensystemen - Google Patents
System zur automatischen Einstellung des Elektordenabstandes einer Funkenstrecke bei elektrohydraulischen Stosswellensystemen Download PDFInfo
- Publication number
- EP0911804A2 EP0911804A2 EP98120079A EP98120079A EP0911804A2 EP 0911804 A2 EP0911804 A2 EP 0911804A2 EP 98120079 A EP98120079 A EP 98120079A EP 98120079 A EP98120079 A EP 98120079A EP 0911804 A2 EP0911804 A2 EP 0911804A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- spark gap
- voltage
- discharge
- curve
- distance
- 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.)
- Granted
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Classifications
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K15/00—Acoustics not otherwise provided for
- G10K15/04—Sound-producing devices
- G10K15/06—Sound-producing devices using electric discharge
Definitions
- the invention relates to a method and device for automatic Adjustment and regulation of the electrode distance of a spark gap of an electro-hydraulic shock wave generation system.
- a device for non-contact destruction of is known Concretions (e.g. kidney stones) in the body of living beings (DE-PS23 51 247), in which an electric Underwater spark discharge is used. The discharge takes place via a spark gap, which is attached in the focus of a reflector. (DE-PS 2 635 635, DE-OS 2 418 631, EP O 124 686)
- the invention has for its object a method and Arrangement for automatic adjustment of the electrode spacing to create the chosen tension and thereby in the therapeutic Can be used over the entire service life of a spark gap carry out frequent discharges with high or low voltage to be able to.
- the principle of the invention is that the regulated directly Size, i.e. the voltage value and voltage curve for triggering of the spark is measured and based on the determined deviation
- the spark gap electrodes are of one size set such a value that the use of the stored energy to optimally design their conversion to the shock wave.
- the discharge curve a spark gap and measured with the target values of the discharge curve compared.
- Spark gap shows the measured signal of the discharge curve typical course. If the distance between the electrode tips is too large, there is no complete discharge over the spark gap and the measured signal deviates from the typical course. Is the distance If the electrode tips are too small, the measured signal in turn gives way from the typical course, since the sparking through the small Distance is facilitated.
- the aim of the invention is the electrode spacing to adjust so that the measured signal of the discharge curve corresponds to the typical course of an optimal discharge. According to the Invention this is achieved in that the signal of the measured Discharge curve is compared with the target values of the discharge curve and according to the determined deviation the distance of the Spark gap electrodes is automatically corrected.
- the voltage curve of the charge and discharge curve of the capacitor is measured and compared with the target charge-discharge curve and the distance of the spark gap electrodes is automatically corrected in accordance with the determined deviation.
- the method according to claim 2 assumes that the discharge of the high-voltage capacitor does not take place, as usual, directly via a spark gap, but via a further capacitor, which in turn discharges via the spark gap by means of self-discharge at maximum charge.
- the voltage on C2 is determined by two processes. C2 is charged by C1 via L1, but at the same time C2 is discharged by the discharge via the spark gap. According to the invention, the distance between the electrode tips of the underwater spark gap is automatically adjusted depending on the voltage on C2 and the state of the electrodes.
- the deviation from the target charging curve is determined using an evaluation circuit. After the evaluation, the evaluation group signals to the actuator that a correction has been made.
- a possible method for determining the deviation of the discharge curve from the target discharge curve is represented by an evaluation circuit, which is the subject of the subclaim.
- the evaluation circuit differentiates whether it is an insufficient charge or a voltage drop due to discharge.
- the evaluation group signals to the actuator that a correction has been made. This is achieved by adding 50% of the negative reference voltage to the transformed signal of the charging voltage of the high-voltage capacitor. See Fig 1a) .
- an output signal is obtained whose steeply falling edge is compared with an upper and a lower reference value, see FIG. 1b) .
- These reference values are close to the zero crossing of the output signal. If the discharge of the high-voltage capacitor takes place near the maximum of the charging curve, the output signal lies between the upper and the lower reference value, see Fig. 1c) . If there is a discharge before the maximum charge of the high-voltage capacitor has been reached and the output signal is above the upper reference value, this is recorded statistically. The electrode spacing must be increased if it occurs repeatedly. If there is a discharge after the maximum charge of the high-voltage capacitor has been reached or there is no discharge and the output signal is below the lower reference value, this is recorded statistically. The electrode spacing must be reduced if it occurs repeatedly.
- a further embodiment of claims 1 and 2 consists in that the evaluation of the discharge or charge curve of a high voltage capacitor with the statistical recording of the number and the voltage of the individual pulses is combined. The wear An electrode will then be statistically based on the number and voltage of the delivered impulses determined. The result of the statistical Evaluation leads to automatic correction of the electrode.
- the arrangement for the implementation of said method consists of a semi-ellipsoid (1), an underwater spark gap (2), a motor (3) with a gear (4), the electronic evaluation unit (5) and the high-voltage capacitor (12), which is connected to the inside Head (6) and the outer conductor (9) is connected.
- Fig. 2 shows the structure of the invention.
- the underwater spark gap (2) which consists of an inner movable conductor (6) with an electrode tip (7), an insulator (8) and an outer conductor (9) with a cage (10) and a fixed electrode tip (11), can be in the Insert the semi-ellipsoid.
- the movable inner conductor is connected to the motor via a gearbox, which is controlled by control electronics. According to the invention, the inner conductor is moved forwards or backwards if the electrode tips are too small or too large.
- the advantage of this method lies in the possibility of using shock wave energy for electrodes that have already been used during the course of a treatment to be able to change as desired over the entire service life without the spark gap must be replaced or readjusted manually. It extends the life of the spark gap and optimizes it Use of an electro-hydraulic shock wave device in applications (e.g. in orthopedics), some with very high and some with is treated with very low shock wave energies and pressures. Furthermore, the invention allows the permanent delivery of shock waves with constant shock wave energy. Finally, the invention leads for optimal use of primary energy, which increases efficiency is increased.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Surgical Instruments (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Generation Of Surge Voltage And Current (AREA)
Abstract
Description
Claims (4)
- Methode zur Anpassung des Elektrodenabstandes einer Funkenstrecke zur Erzeugung von Stoßwellen, dadurch gekennzeichnet, daß die Entladekurve der Funkenstrecke ermittelt und mit den Soll-Werten der Entladekurve verglichen wird und entsprechend der ermittelten Abweichung der Abstand der Funkenstreckenelektroden automatisch korrigiert wird .
- Methode zur Anpassung des Elektrodenabstandes einer Funkenstrecke zur Erzeugung von Stoßwellen an die Ladespannung eines Kondensators dadurch gekennzeichnet, daß der Spannungsverlauf der Lade- und Entladekurve eines Kondensators gemessen und mit der Soll-Lade-/Entladekurve verglichen wird und entsprechend der ermittelten Abweichung der Abstand der Funkenstreckenelektroden automatisch korrigiert wird, so daß die Entladung über die Funkenstrecke bei maximaler Ladung des Hochspannungskondensators erfolgt.
- Die Methode nach Anspruch 1 oder 2 dadurch gekennzeichnet, daß zum transformierten Signal des gemessenen Spannungsverlaufs der Entladespannung 50 % der negativen Referenzspannung addiert werden und daß durch Integration dieser halbsinusförmigen Kurve und anschließender Invertierung ein Ausgangssignal erzeugt wird, dessen steil abfallende Flanke mit Referenzwerten verglichen und bei entsprechendem unter- bzw. überschreiten der Referenzwerte der Elektrodenabstand angepaßt wird.
- Die Methode nach Anspruch 1 oder 2 dadurch gekennzeichnet, daß die Anzahl und die Spannung der Impulse statistisch ermittelt werden, aus diesen Werten ein Einstell-Faktor berechnet wird, der wiederum zur automatischen Korrektur des Elektrodenabstandes über einen elektromechanischen oder hydraulischen Antrieb führt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19746972 | 1997-10-24 | ||
DE19746972 | 1997-10-24 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0911804A2 true EP0911804A2 (de) | 1999-04-28 |
EP0911804A3 EP0911804A3 (de) | 2001-09-19 |
EP0911804B1 EP0911804B1 (de) | 2007-05-09 |
Family
ID=7846470
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98120079A Expired - Lifetime EP0911804B1 (de) | 1997-10-24 | 1998-10-23 | Methode zur automatischen Einstellung des Elektrodenabstandes einer Funkenstrecke bei elektrohydraulischen Stosswellensystemen |
Country Status (5)
Country | Link |
---|---|
US (1) | US6217531B1 (de) |
EP (1) | EP0911804B1 (de) |
AT (1) | ATE362163T1 (de) |
CZ (1) | CZ297145B6 (de) |
DE (1) | DE59814001D1 (de) |
Cited By (6)
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DE10311659A1 (de) * | 2003-03-14 | 2004-09-30 | Sws Shock Wave Systems Ag | Vorrichtung und Verfahren zur optimierten elektrohydralischen Druckpulserzeugung |
EP1727125A1 (de) | 2004-11-26 | 2006-11-29 | HealthTronics Inc. | Verfahren und Vorrichtung zum Regeln einer Stosswellenerzeugungseinrichtung |
DE102007018841A1 (de) | 2007-04-20 | 2008-10-30 | Mts Europe Gmbh | Vorrichtung und Verfahren zur Abstandskalibrierung an Stosswellenelektroden |
WO2009128061A2 (en) * | 2008-04-14 | 2009-10-22 | Avner Spector | Automatic adjustable voltage to stabilize pressure for shockwave medical therapy device |
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CN116687514A (zh) * | 2023-05-26 | 2023-09-05 | 索诺利(厦门)医疗科技有限公司 | 一种能够稳定输出能量的体外碎石机高能发射器 |
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1998
- 1998-10-23 CZ CZ0342398A patent/CZ297145B6/cs not_active IP Right Cessation
- 1998-10-23 DE DE59814001T patent/DE59814001D1/de not_active Expired - Lifetime
- 1998-10-23 AT AT98120079T patent/ATE362163T1/de active
- 1998-10-23 EP EP98120079A patent/EP0911804B1/de not_active Expired - Lifetime
- 1998-10-26 US US09/178,625 patent/US6217531B1/en not_active Expired - Lifetime
Patent Citations (5)
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EP0349915A1 (de) * | 1988-07-01 | 1990-01-10 | Univerzita Karlova Praha | Verfahren und Vorrichtung zum Anpassen der Funkenstrecke eines berührungsfreien Lithotriptors |
DE3929457A1 (de) * | 1989-04-27 | 1990-10-31 | Univ Magdeburg Tech | Verfahren zur regelung der schlagweite des arbeitselektrodensystems von elektrohydraulischen materialbearbeitungsanlagen |
FR2656744A1 (fr) * | 1990-01-04 | 1991-07-05 | Technomed Int Sa | Dispositif de decharge electrique formant eclateur ou "spark gap" a inductance reduite et appareil generateur d'onde de choc en comportant application. |
FR2663531A1 (fr) * | 1990-06-20 | 1991-12-27 | Technomed Int Sa | Procede de controle de l'efficacite d'ondes de pression emises par un generateur d'ondes de pression, des procedes de reglage en comportant application, ainsi qu'un appareil de controle d'efficacite d'ondes de pression, pour sa mise en óoeuvre. |
EP0467770A1 (de) * | 1990-07-16 | 1992-01-22 | Technomed International | Entladeschaltung mit einer hohe Impedanzdrosselspule und ihre Anwendung in Druckwellenerregungsgeräten |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10311659A1 (de) * | 2003-03-14 | 2004-09-30 | Sws Shock Wave Systems Ag | Vorrichtung und Verfahren zur optimierten elektrohydralischen Druckpulserzeugung |
DE10311659B4 (de) * | 2003-03-14 | 2006-12-21 | Sws Shock Wave Systems Ag | Vorrichtung und Verfahren zur optimierten elektrohydraulischen Druckpulserzeugung |
US7390308B2 (en) | 2003-03-14 | 2008-06-24 | General Patent, Llc. | Apparatus and process for optimized electro-hydraulic pressure pulse generation |
EP1727125A1 (de) | 2004-11-26 | 2006-11-29 | HealthTronics Inc. | Verfahren und Vorrichtung zum Regeln einer Stosswellenerzeugungseinrichtung |
DE102007018841A1 (de) | 2007-04-20 | 2008-10-30 | Mts Europe Gmbh | Vorrichtung und Verfahren zur Abstandskalibrierung an Stosswellenelektroden |
DE102007018841B4 (de) * | 2007-04-20 | 2017-07-20 | MTS Medical UG (haftungsbeschränkt) | Vorrichtung zur Erzeugung von Stosswellen, Verfahren zur Ermittlung des Verbrauchszustandes der Elektroden in einer Vorrichtung zum Erzeugung von Stosswellen und Verfahren zur Erzeugung von Stosswellen mittels einer Unterwasserfunkenentladung |
WO2009128061A2 (en) * | 2008-04-14 | 2009-10-22 | Avner Spector | Automatic adjustable voltage to stabilize pressure for shockwave medical therapy device |
WO2009128061A3 (en) * | 2008-04-14 | 2009-12-03 | Avner Spector | Automatic adjustable voltage to stabilize pressure for shockwave medicaltherapy device |
US8900166B2 (en) | 2008-04-14 | 2014-12-02 | Avner Spector | Automatic adjustable voltage to stabilize pressure for shockwave medical therapy device |
CN110573096A (zh) * | 2017-01-17 | 2019-12-13 | 索里顿有限责任公司 | 具有改进的声波波前的快速脉冲电液(eh)冲击波生成器装置 |
CN110573096B (zh) * | 2017-01-17 | 2023-07-28 | 索里顿有限责任公司 | 具有改进的声波波前的快速脉冲电液(eh)冲击波生成器装置 |
CN116687514A (zh) * | 2023-05-26 | 2023-09-05 | 索诺利(厦门)医疗科技有限公司 | 一种能够稳定输出能量的体外碎石机高能发射器 |
Also Published As
Publication number | Publication date |
---|---|
CZ297145B6 (cs) | 2006-09-13 |
EP0911804B1 (de) | 2007-05-09 |
US6217531B1 (en) | 2001-04-17 |
ATE362163T1 (de) | 2007-06-15 |
DE59814001D1 (de) | 2007-06-21 |
CZ342398A3 (cs) | 1999-05-12 |
EP0911804A3 (de) | 2001-09-19 |
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