Mauna Kea Technologies

Centre National De La Recherche Scientifique

Observatoire De Paris

Université Pierre Et Marie Curie (Paris 6)

Endocontrol

Université Pierre Et Marie Curie

Centre National De La Recherche Scientifique-Cnrs

François Lacombe

Nicholas Ayache

David Lafaille

Marie Glanc

Eric Gendron

Douchane Stefanovitch

Guillaume Morel

Bertrand Viellerobe

Nicolas Boularot

Magalie Genet

Patrick Henri

Clément Vidal

Aymeric Perchant

Nicolas Lavillonniere

Alexandre Loiseau

Tom Vercauteren

Geneviève Bourg-Heckly

Frédéric Berier

Nicolas Savoire

Sandra Marti

Georges Le Goualher

Jérôme Szewczyk

Benjamin Abrat

Stéphane Bourriaux

Jérôme Lopez

Benoît Rosa

François Doussoux

Benoît Herman

Sandrine Vilette

The invention relates to an endoscopic instrument () having an elongate body with a distal end () designed to be introduced into the body of the patient so as to come into proximity with an internal organ, the distal end carrying a tool () for intervention on the internal organ. The endoscopic instrument has a fool () rigidly connected to the distal end and designed to bear on the internal organ, and also controllable means () for conferring movements on the tool, at least in directions transverse to a longitudinal axis (X) of the distal end of the endoscopic instrument, when the foot is bearing against the internal organ.

Endoscopic instrument with support foot

The invention relates to a device, for measuring the contrast of fringes in a Michelson interferometer at full field, comprising a Wollaston prism for diverting two perpendicular incident polarizations into two different emergent directions, said diverting means being arranged within the interferometer as substitute for a single polarizer. The device is of application to a Michelson interferometer used in an OCT tomographical system and comprising means for obtaining interferometric contrast without use of a modulation technique or synchronous detection methods.

Device and method for measuring the contrast of the fringes in a michelson interferometer and system for examination of the eye comprising such a device

A sighting device for an examination by in vivo tomography of an eye of a subject including a viewer controlled by a control system for displaying at least one moving target where the at least one moving target has at least one of a programmable shape and a programmable trajectory, and is visible by the eye of the subject during the examination period to allow the subject to fixate and follow the target with their eye.

Eye examination device by means of tomography with a sighting device

An in-vivo high resolution lateral and axial tomography system of the retina, is provided, including a Michelson interferometer, generating a tomographical image by full field OCT interference with Z sweeping, adaptive optical correction apparatus, correcting the wave fronts coming from and going to the eye, including a reference source, a deformable mirror and wave surface analysis apparatus, detection apparatus producing an image from an interferometric measurement using the OCT principle and apparatus for focussing the wave surface analyser. The apparatus for focussing are embodied and controlled, synchronously with the Z sweeping to force the deformable mirror to adopt an additional curvature, such as to combine the input light source and detection apparatus at a given depth in the retina.

High resolution laterial and axial tomography

A sighting device is provided for an examination of the eye, including at least one moving target with a programmable form and trajectory, the target being displayed on a visualisation unit, such as an appropriate screen and visible from both eyes during the examination. An in-vivo tomographical eye examination system is also provided, including: a Michelson interferometer, generating a full-field OCT image, adaptable optical apparatus, arranged between the interferometer and an eye for examination, achieving the correction of the wavefronts coming from the eye and also the wavefronts going to the eye, detection apparatus, arranged after the interferometer, permitting the interferometric measurement by the OCT principle without modulation nor synchronized detection and a sighting device, with at least one mobile target with a programmable form and trajectory, the target being displayed on an appropriate screen and visible from at least one of the eyes during the examination.

An equipment includes an excitation source (), elements for injecting () an excitation signal produced by the source in an ordered bundle () of flexible optical fibers, elements for analyzing () an emitted autofluorescence signal. The equipment also includes at the output of the optical fiber bundle () an optical head () designed to be placed in contact with the biological tissue (), the optical head being equipped with optical elements adapted to cause the excitation signal output from the bundle () to converge into a subsurface analyzing zone (), the same optical fiber(s) used for excitation of the bundle () being used for detecting the signal emitted by the subsurface analyzing zone, elements (D) placed upstream of the injection elements () being further provided to separate the wavelength of the excitation signal and the wavelength of the autofluorescence signal.

Equipment for subsurface autofluorescence spectroscopy

Equipment includes an image guide () consisting of flexible optical fibers with: on the proximal end side: a source (), angular scanning elements (), injection elements () in one of the fibers, elements for splitting () the illuminating beam and the backscattered signal, elements for spatial filtering (), elements for detecting () the signal, electronic elements () for controlling, analyzing and digital processing of the detected signal and display; and on the distal end side: an optical head () for focusing the illuminating beam exiting from the illuminated fiber. The scanning elements include a resonant line mirror (M) and a galvanometric field mirror (M) with a variable frequency and two afocal optical systems adapted to conjugate the two mirrors (M, M) firstly in the field mirror (M) and the injection elements () in the image guide in a second step.

Confocal imaging equipment in particular for endoscope

Growing community of inventors

Chaville, France

François Lacombe