摘要:
The invention relates to a device for transiently contacting at least one unit for capturing biological targets with a body fluid containing them, a method for recovering the captured targets for analysis, and a system for contacting and recovering a capture substrate included in said unit. The invention relates to samples obtained in particular in vivo from body fluids of the human body, e.g. circulating body fluids, said fluids possibly containing, as targets, proteins, oligonucleotides such as RNA or DNA, antibodies, enzymes or cells. A contacting device (1) according to the invention comprises: a sampling tip (2) having a contacting end intended to be introduced into a medium containing said fluid, and the or each capturing unit which is bound to said end and which comprises a capture substrate (3) defining a target capturing surface covered with at least one biocompatible and porous crosslinked polymer layer (4) designed to retain the or each capture substrate and only to allow biological particles including targets smaller than a limiting size to pass through, in such a way that the or each capture substrate is recoverable after said contacting by dissolution of the or each layer.
摘要:
Device comprising a carrier (100) and at least one cover (104) able to be bonded to the carrier to form with the carrier at least one cavity (114) having a controlled atmosphere around at least one component (102). In accordance with the invention, at least one of either the cover or the carrier is provided with at least one wedge (110) in fusible material and a strip of insulation (112) formed around said component, and before bonding, the wedge of fusible material is of sufficient thickness to prevent the strip of insulation (112) from coming into contact both with the cover and with the carrier when they are assembled together. Particular application to the encapsulation of electronic, mechanical or electromagnetic components.
摘要:
A method of manufacturing a microelectric device containing, on a substrate, a plurality of interconnected elements, comprising the steps of manufacturing on a substrate cells of elements, testing of the cells in order to distinguish the valid cells, formation of junction bands in an electrical conductive material connecting at least one valid cell, the junction bands being formed in fields, each field comprising an overlapping area with at least one neighboring field.
摘要:
A process for checking the conformity of hybridization balls present on a chip or a substrate and its implementation device are provided. The process includes positioning the hybridization balls of the electronic component or substrate near a strip transparent to a predetermined wavelength. The hybridization balls are partially flattened against the strip by positioning the electronic component or substrate at a previously defined distance from the transparent strip. The previously defined distance corresponds to a theoretical reference ball height less an acceptable deviation between the theoretical reference ball height and a minimum height of the hybridization balls. The partial flattening creates ball flats on the hybridization balls at the strip. The hybridization balls are illuminated with a light beam of the predetermined wavelength that is emitted through the strip. A portion of the light beam reflected back through the strip by the hybridization balls to be checked and is acquired. Finally, conformity or nonconformity of the hybridization balls to be checked is determined as a function of the portion of said light beam reflected back by each of the hybridization balls.
摘要:
A lead for deep brain electrical stimulation, to be inserted into liquid cavities, such as ventricles, or cysternae or subarachnoidal spaces, the lead comprising: a tubular body of biocompatible material having a side wall defining a lumen, said tubular body being suitable for being inserted over at least a fraction of its length into the inside of a patient's body in order to reach a region for stimulation; electrodes disposed close to a distal end of the tubular body; and a rigid stylet for inserting removably into the lumen of said tubular body; the lead being wherein said tubular body has an equilibrium shape that is not rectilinear, being different from the shape of the stylet and presenting one and only one bend, and that is sufficiently flexible and elastic to follow the shape of said stylet by deforming reversibly when the stylet is inserted into the lumen. A deep electrical neurostimulation system comprising an electrical pulse generator and at least one such lead having its electrodes electrically connected to said generator.
摘要:
A method of counting thrombocytes contained in a sample of blood, the method having the steps: mixing said sample with: fluorescent markers suitable for bonding specifically with the thrombocytes; and an agent for inhibiting activation of said thrombocytes; introducing the sample (E) into a fluidic chamber (CF) having at least one transparent face; acquiring at least one digital image (IN) of said sample by fluorescence microscopy under stationary illumination; and counting the thrombocytes (T) present in said or each image by image processing computer means (O). Apparatus for implementing the method.
摘要:
A microtechnological device (6) for sampling cells on or in a tissue or other element of the body. It comprises a support (12) having at least one surface of interest (14) on which is present at least one recovery zone (10) comprised of a bottom wall (22) equipped with a plurality of protuberances (24). Preferably, the microtechnological device comprises at least one recovery zone covered with a coating that has the power to attract the cells to be sampled.
摘要:
A lead for deep brain electrical stimulation, to be inserted into liquid cavities, such as ventricles, or cysternae or subarachnoidal spaces, the lead comprising: a tubular body of biocompatible material having a side wall defining a lumen, said tubular body being suitable for being inserted over at least a fraction of its length into the inside of a patient's body in order to reach a region for stimulation; electrodes disposed close to a distal end of the tubular body; and a rigid stylet for inserting removably into the lumen of said tubular body; the lead being wherein said tubular body has an equilibrium shape that is not rectilinear, being different from the shape of the stylet and presenting one and only one bend, and that is sufficiently flexible and elastic to follow the shape of said stylet by deforming reversibly when the stylet is inserted into the lumen. A deep electrical neurostimulation system comprising an electrical pulse generator and at least one such lead having its electrodes electrically connected to said generator.
摘要:
This invention relates to a cerebral electrostimulation device containing a commutation device (300) comprising at least one input and several outputs each connected to at least one biocompatible electrode or at least one active area (202) of a biocompatible electrode (200), the commutation device (300) being used to selectively connect at least one input to one or more outputs. This electrostimulation device may be used for methods of diagnostic or therapy for the treatment of some pathologies, for example such as epilepsy or Parkinson's disease.
摘要:
A device for measuring electrical activity of biological elements, including a substrate that has lower and upper faces and at least one through opening, the opening being delimited by a set of walls. Two plates are placed on either side of the lower and upper faces of the substrate and delimit, with the set of walls, a chamber. Each of the plates is provided, on its face lying opposite the substrate, with at least one electrode facing the opening in the substrate. Each of the plates further has at least one channel that starts inside the chamber and connects the chamber to the outside of the device, and the chamber communicates with the outside of the device only through the channels.