A guidance system for guiding the displacement of a movable element with respect to a fixed element. The guidance system includes a linear actuator, the fixed element having a main guide axis, a secondary guide axis, the movable element being arranged to be displaced by the linear actuator with respect to the fixed element along a first axis (z). The movable element includes: a first rolling bodies guide device cooperating with the main guide axis, arranged to block four degrees of freedom of the movable element, a second rolling bodies guide device cooperating with the secondary guide axis, arranged to block a rotation of the movable element about a third axis (z). The fixed element or the movable element includes a first magnet, and the movable element respectively the fixed element includes a ferromagnetic support and/or a second magnet, wherein the first magnet and the ferromagnetic support and/or the first magnet and second magnet are arranged to generate a magnetic force (FA) which is arranged to reduce or avoid a clearance, thereby enabling guidance with little or no clearance.
The invention relates to a method of manufacturing a bearing (100) for a medical rolling bodies guide device, comprising components, at least one component (20; 6, 2, 4, 5, 5′) being made of titanium or a titanium alloy, the method comprising the steps of
processing the titanium or titanium alloy component;
performing a diffusion hardening treatment of the machined component, so that the component comprises a surface layer (21) having a hardness in the range 900 Hv-1100 Hv. The invention makes it possible to manufacture a medical rolling bodies guide device in a material which does not a priori have the properties required for these applications.
The invention relates to a system for positioning optical fibres (2) in a telescope, the system being characterised in that it comprises a plurality of modules (1) configured so as to be attached to the focal plate of a telescope; wherein each module (1) contains a plurality of optical fibre positioners (3), each primarily comprising an alpha motor (4) and a beta motor (5) that interact with one another so as to position the end of an optical fibre (2) inside a circular zone; and wherein each optical fibre positioner (3) is further formed of two subassemblies that are assembled in a module (1).
The present invention relates to a screw-nut transmission system, comprising: - a first element (10; 20); - a second element (20; 10) arranged to rotate about an axis (X) and engaging with the first element (10; 20) such that the first element (10; 20) moves with a translational motion along this axis (X) when the second element (20; 10) rotates, the first element (10; 20) being a nut or a screw, and the second element (20; 10) being the screw or the nut, respectively; - a fixed shell (60) at least partially surrounding the first element (10; 20) and the second element (20; 10) and comprising a groove (90) defined by sides; - the first element (10; 20) comprising a portion arranged to move with a translational motion inside the groove (90), characterised in that the system comprises: - a first magnet (40) connected to this portion and to the fixed shell (60); and - a contact surface (51) made of ferromagnetic material and/or a second magnet, connected to the fixed shell (60) and to this portion, this contact surface (51) and/or the second magnet engaging with the first magnet (40), so as to block any rotation of the first element (10; 20).
Fiber positioning unit of SCARA type comprising an alpha (1,2,3) and a beta mechanism (4,5); the alpha mechanism successively comprising a motor (1), a driving shaft (2) and a rotatable shaft (3), the rotation of the rotatable shaft (3) being carried out by the alpha motor (1) via the driving shaft (2); the beta mechanism comprising a motor (4) and a fiber holding element (5) that may be rotated by the beta motor (4); both mechanisms being mechanically connected in a way to allow a rotation of the beta mechanism (4,5) by the rotatable shaft (3); the alpha mechanism (1,2,3) being furthermore adapted to be partially located within a focal plate (6), characterized by the fact that the alpha motor (1) is adapted to be located on one side of the focal plate (6) while the rotatable shaft (3) and the beta mechanism (4,5) are adapted to be located on the other side of the focal plate (6).
The invention relates to a method for manufacturing a rolling bearing (100) for a medical guide device with roller bodies, comprising components, at least one component (20; 6, 2, 4, 5, 5') being made of titanium or of titanium alloy, the method comprising the steps of - using the component made of titanium or of titanium alloy; - carrying out a hardening treatment by diffusion of the machined component, so that the component comprises a superficial layer (21) having a hardness in the range of 900 Hv – 1100 Hv. The invention makes it possible to manufacture a medical guide device with roller bodies from a material that does not have a priori the properties necessary for these applications.
C23C 8/02 - Pretreatment of the material to be coated
C23C 8/06 - Solid state diffusion of only non-metal elements into metallic material surfacesChemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
C23C 8/08 - Solid state diffusion of only non-metal elements into metallic material surfacesChemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
The invention relates to a method for manufacturing a rolling bearing (100) for a medical guide device with roller bodies, comprising components, at least one component (20; 6, 2, 4, 5, 5') being made of titanium or of titanium alloy, the method comprising the steps of - using the component made of titanium or of titanium alloy; - carrying out a hardening treatment by diffusion of the machined component, so that the component comprises a superficial layer (21) having a hardness in the range of 900 Hv – 1100 Hv. The invention makes it possible to manufacture a medical guide device with roller bodies from a material that does not have a priori the properties necessary for these applications.
C23C 8/02 - Pretreatment of the material to be coated
C23C 8/06 - Solid state diffusion of only non-metal elements into metallic material surfacesChemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
C23C 8/08 - Solid state diffusion of only non-metal elements into metallic material surfacesChemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
Connection interface (1) for a surgical instrument (10), comprising a locking/unlocking mechanism having at least one spring (7) and a retention element mounted movably in such a way as to respectively retain or disconnect the proximal end of a surgical instrument (10), characterized in that the locking/unlocking mechanism comprises a sliding ring (11) and in that said retention element is a lever (8) arranged inside the ring (11) and having a free end forming a protuberance (12); the spring (7) being arranged in such a way as to exert a force on the ring (11) in the direction of the distal end of the connection interface (1); the lever (8) being pivotably mounted to be able to pivot between: - a locking position, in which the ring (11) surrounds the lever (8) and exerts a radial force on the latter, in such a way that the protuberance (12) retains an instrument (10), and - an unlocking position, in which the ring (11) is retracted in the direction of the proximal part of the connection interface (1) and the lever (8) is oriented in such a way as to be disconnected from the instrument (10).
A61B 17/16 - Instruments for performing osteoclasisDrills or chisels for bonesTrepans
A61B 17/00 - Surgical instruments, devices or methods
A61B 90/00 - Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups , e.g. for luxation treatment or for protecting wound edges
Fiber positioning unit of SCARA type comprising an alpha (1,2,3) and a beta mechanism (4,5); the alpha mechanism successively comprising a motor (1), a driving shaft (2) and a rotatable shaft (3), the rotation of the rotatable shaft (3) being carried out by the alpha motor (1) via the driving shaft (2); the beta mechanism comprising a motor (4) and a fiber holding element (5) that may be rotated by the beta motor (4); both mechanisms being mechanically connected in a way to allow a rotation of the beta mechanism (4,5) by the rotatable shaft (3); the alpha mechanism (1,2,3) being furthermore adapted to be partially located within a focal plate (6), characterized by the fact that the alpha motor (1) is adapted to be located on one side of the focal plate (6) while the rotatable shaft (3) and the beta mechanism (4,5) are adapted to be located on the other side of the focal plate (6).
G02B 7/00 - Mountings, adjusting means, or light-tight connections, for optical elements
G02B 23/26 - Instruments for viewing the inside of hollow bodies, e.g. fibrescopes using light guides
G02B 7/183 - Mountings, adjusting means, or light-tight connections, for optical elements for prismsMountings, adjusting means, or light-tight connections, for optical elements for mirrors for mirrors specially adapted for very large mirrors, e.g. for astronomy
The present invention concerns an angular transmission device comprising: An input shaft and an output shaft, An assembly arranged for coupling the input shaft with the output shaft so that the output shaft can be rotationally driven by the input shaft, the assembly comprising a rotary actuator and a linear mobile, the rotary actuator being coupled with the input shaft and moves the mobile in a translation motion relative to the actuator, the mobile being coupled with the output shaft so that the rotation of the input shaft drives the rotation of the output shaft; the assembly further comprises a flexible blade fixed to said mobile and looped around the output shaft, so that when the actuator moves the mobile, the flexible blade drives the rotation of the output shaft. The invention also comprises a method using said device.
F16H 25/22 - Screw mechanisms with balls, rollers, or similar members between the co-operating partsElements essential to the use of such members
F16H 1/16 - Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
F16H 19/00 - Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
F16H 19/06 - Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary motion and reciprocating motion comprising an endless flexible member
The present invention concerns an angular transmission device comprising: An input shaft and an output shaft, An assembly arranged for coupling the input shaft with the output shaft so that the output shaft can be rotationally driven by the input shaft, the assembly comprising a rotary actuator and a linear mobile, the rotary actuator being coupled with the input shaft and moves the mobile in a translation motion relative to the actuator, the mobile being coupled with the output shaft so that the rotation of the input shaft drives the rotation of the output shaft; the assembly further comprises a flexible blade fixed to said mobile and looped around the output shaft, so that when the actuator moves the mobile, the flexible blade drives the rotation of the output shaft. The invention also comprises a method using said device.
F16H 25/22 - Screw mechanisms with balls, rollers, or similar members between the co-operating partsElements essential to the use of such members
F16H 19/00 - Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
F16H 19/06 - Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary motion and reciprocating motion comprising an endless flexible member
An implantable device comprising a driving unit and a kinematic assembly joined together: the driving includes, in an hermetic capsule, electromechanical component, like an electric motor and, the battery pack, and electronic elements, while the kinematic assembly includes a reducer and an actuator, for example a lead-screw distractor, and is lubricated by body fluids. Mechanical energy is transmitted without contact from the former to the latter by a magnetic transmission.
A61B 17/60 - Surgical instruments or methods for treatment of bones or jointsDevices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements for external osteosynthesis, e.g. distractors or contractors
A61B 17/72 - Intramedullary devices, e.g. pins or nails
Medical and surgical instruments, namely, hip surgery instruments, knee surgery instruments, shoulder surgery instruments and traumatology instruments; all of the foregoing goods excluding pedicle screws and electromechanical instruments for the delivery of cardioplegic solutions
An implantable device comprising a driving unit and a kinematic assembly joined together: the driving includes, in an hermetic capsule, electromechanical component, like an electric motor and, the battery pack, and electronic elements, while the kinematic assembly includes a reducer and an actuator, for example a lead-screw distractor, and is lubricated by body fluids. Mechanical energy is transmitted without contact from the former to the latter by a magnetic transmission.
The invention relates to a modular linear ball bearing (10) including a cylindrical bushing (11) in which a ball cage (12) is capable of sliding. The ball cage (12) includes a first cage module (13) having a first ball crown (14), a second cage module (13') identical to the first module having a second ball crown (14'), and an intermediate segment (16) having a tubular cylindrical shape used as a strut and mounted between the first and second cage modules (13, 13'). The three independent components of the bearing (10) are coupled using male attachment members (17) in the form of elastic hooks and female linking members (18) consisting of complementary recesses. The assembly of the components is carried out by snap-coupling under the effect of an axial force applied on the two members to be coupled.
