DE1004341B - Therapeutic ultrasound device with pulse operation - Google Patents
Therapeutic ultrasound device with pulse operationInfo
- Publication number
- DE1004341B DE1004341B DESCH8575A DESC008575A DE1004341B DE 1004341 B DE1004341 B DE 1004341B DE SCH8575 A DESCH8575 A DE SCH8575A DE SC008575 A DESC008575 A DE SC008575A DE 1004341 B DE1004341 B DE 1004341B
- Authority
- DE
- Germany
- Prior art keywords
- ultrasound device
- pulse
- pulse operation
- therapeutic ultrasound
- therapeutic
- 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.)
- Pending
Links
- 230000001225 therapeutic effect Effects 0.000 title description 8
- 238000002604 ultrasonography Methods 0.000 title description 6
- 230000010355 oscillation Effects 0.000 description 4
- 206010018910 Haemolysis Diseases 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008588 hemolysis Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000000254 damaging effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000527 sonication Methods 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H23/00—Percussion or vibration massage, e.g. using supersonic vibration; Suction-vibration massage; Massage with moving diaphragms
- A61H23/02—Percussion or vibration massage, e.g. using supersonic vibration; Suction-vibration massage; Massage with moving diaphragms with electric or magnetic drive
- A61H23/0245—Percussion or vibration massage, e.g. using supersonic vibration; Suction-vibration massage; Massage with moving diaphragms with electric or magnetic drive with ultrasonic transducers, e.g. piezoelectric
Landscapes
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Pain & Pain Management (AREA)
- Physical Education & Sports Medicine (AREA)
- Rehabilitation Therapy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Description
Therapeutisches Ultraschallgerät mit Impulsbetrieb Ultraschall wird für therapeutische Zwecke in Form kontinuierlicher Schwingungen benutzt, so daß sich stehende Wellen ausbilden können, die wiederum die Entstehung von in Resonanz schwingenden Gaskugeln bedingen. Dieser Effekt bewirkt Hämolyse.Therapeutic ultrasound device with pulse operation Ultrasound is used for therapeutic purposes in the form of continuous vibrations, so that Standing waves can form, which in turn cause resonance cause vibrating gas balls. This effect causes hemolysis.
Da Diffusionsbeschleunigung, Absorptionswärmeerzeugung und andere Ultraschalleffekte an der lebenden Membran auch ohne das Vorhandensein stehender Wellen eintreten, geht die Erfindung von der Erkenntnis aus, daß zur Vermeidung der schädigenden Wirkungen der Hämolyse bei der therapeutischen Beschallung stehende Wellen vermieden werden müssen.Because diffusion acceleration, absorption heat generation and others Ultrasound effects on the living membrane even without the presence of standing ones Waves occur, the invention is based on the knowledge that to avoid the damaging effects of hemolysis during therapeutic sonication Waves must be avoided.
Dies geschieht erfindungsgemäß dadurch, daß bei einem Gerät mit Impulsbetrieb die Schwingungszahlen innerhalb der Impulse veränderlich und die Impulsbreiten so gering sind, daß die Ausbildung stehender Wellen verhindert wird. Erfahrungsgemäß werden Impulse mit einer Impulsdauer unter 10 sec, vor zugsweise iO4 sec, verwendet, wodurch sicher die Bildung einer stehenden Welle vermieden wird. Die bisher bekannten therapeutischen Geräte, die einen Impulsbetrieb gestatten, erfüllen nicht die Forderung hinreichend kleiner Impulsbreite; sie sind aus anderen Gründen für diskontinuierlichen oder getasteten Betrieb eingerichtet. So sind Apparate bekanntgeworden, die Impulsbreiten von etwa 10-i sec gestatten; sogenannte Halbwellenapparate (mit Anodenwechselstrom betriebene Röhrengenerato,ren) besitzen auch noch zu große Impulsbreite. Legt man die für therapeutische Zwecke übliche Frequenz von 1 MHz zugrunde, so ergeben sich bei einer Impulsbreite von 102 sec immer noch 104 Schwingungen je Impuls, die völlig ausreichend sind, um eine gewisse Zeit eine stehende Welle bei den geringen Abständen, die in der Therapie zwischen Strahlerfläche und reflektierender Wand in Frage kommen, zu erzeugen. Dagegen besteht diese Möglichkeit nicht mehr bei Impulsbreiten unter 10 sec, vorzugsweise 10-4 sec. This is done according to the invention in that in a device with pulse operation the oscillation numbers within the impulses are variable and the impulse widths like this are small that the formation of standing waves is prevented. According to experience pulses with a pulse duration of less than 10 sec, preferably before iO4 sec, are used, whereby the formation of a standing wave is reliably avoided. The ones known so far therapeutic devices that allow pulse operation do not meet the requirement sufficiently small pulse width; they are discontinuous for other reasons or keyed operation. Apparatus has become known, the pulse widths allow from about 10-i sec; so-called half-wave apparatus (with anode alternating current operated tube generators) also have too large a pulse width. If you lay the frequency of 1 MHz customary for therapeutic purposes is the basis with a pulse width of 102 sec there are still 104 oscillations per pulse, which is completely are sufficient to produce a standing wave for a certain time at the short distances which can be used in therapy between the radiator surface and the reflective wall, to create. On the other hand, this possibility no longer exists with pulse widths below 10 sec, preferably 10-4 sec.
Vorzugsweise und wirtschaftlich werden erfindungsgemäß die erforderlichen kleinen Impulsbreiten mittels Löschfunkensender erzeugt. Hierbei ergibt sich noch der Vorteil, daß innerhalb der gedämpft an- und abklingenden Schwingung infolge der Dämpfung des Kreises Frequenzänderung eintritt, die ebenfalls dazu beiträgt, eine stehende Welle zu verhindern. Preferably and economically according to the invention are the necessary small pulse widths generated by an extinguishing spark transmitter. This still results the advantage that within the dampened rising and falling oscillation as a result the attenuation of the circuit frequency change occurs, which also contributes to to prevent a standing wave.
PATENTANSPR0CHE 1. Therapeutisches Ultraschallgerät mit Impulsbetrieb, dadurch gekennzeichnet, daß die Schwingungszahlen innerhalb der Impulse veränderlich und die Impulsbreiten so gering sind, daß die Ausbildung stehender Ultraschallwellen verhindert wird. PATENT CLAIM 1. Therapeutic ultrasound device with pulse operation, characterized in that the oscillation numbers within the pulses are variable and the pulse widths are so small that standing ultrasonic waves are formed is prevented.
2. Therapeutisches Ultraschallgerät nach Anaspruch 1, gekennzeichnet durch die Verwendung stark gedämpfter Loschfiunkensender. 2. Therapeutic ultrasound device according to claim 1, characterized through the use of heavily attenuated radio frequency transmitters.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DESCH8575A DE1004341B (en) | 1952-01-18 | 1952-01-18 | Therapeutic ultrasound device with pulse operation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DESCH8575A DE1004341B (en) | 1952-01-18 | 1952-01-18 | Therapeutic ultrasound device with pulse operation |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1004341B true DE1004341B (en) | 1957-03-14 |
Family
ID=7425852
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DESCH8575A Pending DE1004341B (en) | 1952-01-18 | 1952-01-18 | Therapeutic ultrasound device with pulse operation |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1004341B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3152827A1 (en) * | 1981-05-06 | 1983-07-07 | Orvosi Mueszer Szoevetkezet | AUTOMATIC DOSING AND CONTROL CIRCUIT ARRANGEMENT |
-
1952
- 1952-01-18 DE DESCH8575A patent/DE1004341B/en active Pending
Non-Patent Citations (1)
Title |
---|
None * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3152827A1 (en) * | 1981-05-06 | 1983-07-07 | Orvosi Mueszer Szoevetkezet | AUTOMATIC DOSING AND CONTROL CIRCUIT ARRANGEMENT |
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