Institut National De La Sante Et De La Recherche Medicale

Technomed International

Technomed Medical Systems

Other

Technomed International Societe Anonyme

Technomed International, S.a.

Iserm

Technomed Int'l

Institut National De Recherche Meicale (Establissement Public)

Parc D'activites La Poudrette Lamartine

Dominique Cathignol

Jean-Louis Mestas

Bernard Lacruche

Jean-Yves Chapelon

Emmanuel Blanc

Albert Gelet

Francois Lacoste

Maurice Bourlion

Paul Dancer

Cyril Lafon

Gerard Hascoet

Claude Fourcade

Jean-Paul Aschwanden

Jean Y Chapelon

Raoul Muchada

Frederic Prat

Bernard Lavandier

A device for producing high pressure ultrasound pulses. The device includes an ultrasound source having a piezoelectric transducer provided with electrodes and presenting polarization in a given direction (f). An electrical voltage is applied to the electrodes to emit an ultrasound wave and to apply an electric field in a direction (f) opposite to the polarization direction (f) in order to compress the ultrasound transducer. A transient electric field having the same direction (f) as the polarization direction (f) is then applied so as to cause a compression ultrasound wave to be emitted in the coupling medium.

Device and method for producing high-pressure ultrasonic pulses

A method for treating myomas or tumors having a pedicle includes the steps of locating the pedicle of a myoma or a tumor using Doppler echography and delivering focused ultrasound to the pedicle.

Apparatus and method for location and treatment using ultrasound

An ultrasound applicator for heating, via an internal path, an ultrasound absorbent medium, includes an application head having a longitudinal axis and including at least one ultrasonic transducer having a planar emission face and an opposite face, a leakproof membrane which overlays and is spaced from the emission face, and which is transparent to ultrasound, and means for preventing propagation of ultrasound from the opposite face; means for remotely connecting the transducer to an electricity generator; and means for providing ultrasound coupling with the membrane. The planar emission face emits ultrasound waves through the membrane and in a direction that is substantially perpendicular to the emission face, such that the waves emitted are substantially planar and do not diverge in the vicinity of the transducer and the application head.

Ultrasound applicator for heating an ultrasound absorbent medium

The invention relates to the use of Dirac-type autocorrelation function signals for powering multielements ultrasonic transducers used in therapeutic application in order to minimize or eliminate secondary focusing. The Dirac-type autocorrelation function signals may be generated by a pseudo random binary code.

Adjustable focusing therapeutic apparatus with no secondary focusing

A therapeutic endo-rectal probe comprises at least a piezoelectric transducer element mounted in a support member itself connected to a rigid guide means enabling endo-rectal insertion of said probe, the outside shape of said support member preferably being that of a disk having an outline that is for the most part substantially circular or substantially elliptical, thereby facilitating endo-rectal insertion.

Therapeutic endo-rectal probe, and apparatus constituting an application

Ultrasound therapy apparatus delivering ultrasound waves having thermal

An ultrasonic probe for flow rate measurement by the Doppler effect includes at least one wide-beam ultrasound transducer fixed on a support block and at least one narrow-beam ultrasound transducer fixed on a support block and whose beam position is known in relation to the wide beam, and a control and processing unit which processes and measures the characteristics of the signal from the narrow-beam transducer in order to determine the only appropriate direction for pointing the wide-beam transducer to enable an accurate measurement of flow rate to be performed.

Ultrasonic method and apparatus for flow measurement

A therapeutic endo-rectal probe comprises a piezoelectric transducer element mounted in a support member itself connected to a rigid guide means enabling endo-rectal insertion of the probe, the outside shape of the support member preferably being that of a disk having an outline that is for the most part substantially circular or substantially elliptical, thereby facilitating endo-rectal insertion.

Therapeutic endo-rectal probe and apparatus constituting an application

The invention relates to an apparatus for a real-time tracking and imaging of objects. The apparatus comprises of a real-time image forming device, a device for coupling the image forming device with a wave generator generating waves adapted to effect appropriate treatment of said object directed towards a target focus, wherein the coupling device includes a device for displacing the image forming device relative to said target focus. The invention offers the advantage of great positional freedom for the image forming device, enhanced resolution and safe observation of objects within the body of a mammal, and in particular a human being. The object is in particular selected from a concretion, a bone or a tumor, notably a cancerous tumor.

Apparatus for real-time tracking and imaging of objects within the body

The invention relates to a composite piezoelectric transducer for making an acoustic or an ultrasonic therapeutic apparatus. The transducer may be a single large-size transducer or it may be a multi-transducer device and it advantageously emits ultrasonic waves that are focused on a focal point.

Use of at least one composite piezoelectric transducer in the

The invention relates to a method for manufacturing an acoustic sensor, and also to the sensor. The sensor comprises a piezoelectric sheet (12) mounted on a support (14) and electrically connected to electrodes (16,18) connected by electrical conductors (20,22) to a measurement device, characterized in that the assembly constituted by the sheet (12) and its support (14) is coated with a one-piece polymerizable coating layer (24) which is preferably electrically insulating, such that the portion (24a) of the coating layer (24) overlying the sheet (12) constitutes a protective layer which is rendered non-detachable or essentially non-detachable from the piezoelectric sheet (12). The method for manufacturing this sensor is extremely simple and inexpensive, and the protective layer is non-detachable.

Method for manufacturing an acoustic sensor, and acoustic sensor

The present invention relates to a method and a device for producing an electric discharge between two electrodes. This method characterized in that the resistance to the passage of the electric arc, at least between the electrodes, is considerably reduced so as to bring it to a resistance value near to or slightly higher than the critical resistance, by interposing at least between the electrodes, an electrically conductive electrolyte contained in an essentially closed reservoir surrounding the electrodes. The invention makes it possible to improve the rate of discharge of an electric current produced between the electrodes, by eliminating substantially completely the latency time.

Method and device interposing an electrically conductive liquid between

Apparatus and method for generating shockwaves for the destruction of

The invention relates to an apparatus for selective destruction of cells including soft tissues and bones inside a living subject's body. This apparatus is characterized in that it comproses:

Apparatus for selective destruction of cells by implosion of gas bubbles

The present invention relates to a method and device for discharging an electric current between two electrodes, comprising considerably reducing the resistance to the passage of electric current at least between the electrodes so as to bring it to a resistance value near to or slightly higher than the critical resistance by interposing a conductive electrolyte between electrodes. This improves the rate of discharge of an electric current produced between the electrodes, by eliminating substantially completely the latency time.

Growing community of inventors

Genas, France

Dominique Cathignol