EP0176136A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Apparatus for treating a patient with ultrasound waves and treatment head for such apparatus
Assignee: Optische Industrie 'de Oude Delft' Te Delft BV
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Filing: 1985-09-12
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Granted: —
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Expires: 2005-09-12
Abstract
Abstract 57 An apparatus for treating a patient with ultrasound waves comprises a treatment head and an amplifier (7) receiving an input signal depending on the desired intensity of the ultrasound waves and providing an electrical output signal on its output. The treatment head can be connected to the output of the amplifier (7) and contains a converter element (2) for converting the electrical signals into ultrasound waves. An adjustable element (6) is provided in the treatment head, the adjustment of which indicates the efficiency and the impedance of the converter element (2), a controlling circuit being provided for influencing the electrical output signal in dependence on the adjustment of the adjustable element in such a manner that the treatment head delivers ultrasound waves with the desired intensity.
Inventors
- 👤 Petrus Paulus Maria Rindt
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 22:09
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/0207; B06B1/0223; B06B1/0238; B06B1/0246; B06B1/0253; B06B2201/00; B06B2201/70; B06B2201/76
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
122 words
Apparatus for treating a patient with ultrasound waves, comprising an amplifier receiving an input signal depending on the desired intensity of the ultrasound waves and providing an electrical output signal on its output, and a treatment head which can be connected to the output of the amplifier and which contains a converter element for converting the electrical signal into ultrasound waves, characterized in that an adjustable element is provided in the treatment head, the adjustment of which indicates the efficiency and the impedance of the converter element, a controlling circuit being provided for influencing the electrical output signal in dependence on the adjustment of the adjustable element in such a manner that the treatment head delivers ultrasound waves with the desired intensity.
Claim 2
Dependent Claim
122 words
Apparatus for treating a patient with ultrasound waves, comprising an amplifier receiving an input signal depending on the desired intensity of the ultrasound waves and providing an electrical output signal on its output, and a treatment head which can be connected to the output of the amplifier and which contains a converter element for converting the electrical signal into ultrasound waves, characterized in that an adjustable element is provided in the treatment head, the adjustment of which indicates the efficiency and the impedance of the converter element, a controlling circuit being provided for influencing the electrical output signal in dependence on the adjustment of the adjustable element in such a manner that the treatment head delivers ultrasound waves with the desired intensity.
Claim 3
Dependent Claim
101 words
Apparatus according to claim 1, characterized in that the controlling circuit comprises a measuring means which measures a parameter of the output signal of the amplifier and provides a signal depending on this parameter to a first input of a first multiplier, of which a second input receives a signal determined by the adjustable element and of which an output signal is fed to the one input of a comparator, of which the other input receives the input signal depending on the desired intensity of the ultrasound waves and of which the output is connected to the input of the amplifier.
Claim 4
Dependent Claim
57 words
Apparatus according to claim 2, characterized in that the adjustable element comprises an adjustable resistance which when the treatment is connected to the amplifier has one side connected to ground and its other side connected to a reference voltage through a determined resistance, the junction between both resistances being connected to the respective input of the multiplier.
Claim 5
Dependent Claim
82 words
Apparatus according to claim 2 or 3, characterized in that a voltage divider having an adjustable resistance is connected in parallel to a circuit including the converter element wherein when the treatment head is connected to the ampifier a branching point of the voltage divider through a rectifier element is connected to a first input of a second multiplier which on a second input receives the output signal of the first multiplier and the output of which is connected to a display.
Claim 6
Dependent Claim
46 words
Treatment head for an apparatus of anyone of the preceding claims, comprising a converter element included in a circuit for converting an electrical signal into ultrasound waves, characterized by an adjustable element, of which the adjustment indicates the efficiency and the impedance of the converter element.
Claim 7
Dependent Claim
16 words
Treatment head according to claim 5, characterized in that the adjustable element comprises an adjustable resistance.
Claim 8
Dependent Claim
38 words
Treatment head according to claim 5 or 6, characterized in that a voltage divider having an adjustable resistance is connected in parallel to the circuit, a branching point of the voltage divider being accessible through a rectifier element.
References Cited (Backward Citations)
US3489930A
Cited
DE1912291A1
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US3852999A
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GB1496137A
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GB2099594A
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DE3136028A1
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