Abstract:
To replace 1,1,2-trichloro-1,2,2-trifluoroethane (F113) in its applications to the cleaning and drying of solid surfaces, the invention propose to employ a (perfluoroalkyl) ethylene of formula:R.sub.f CH.dbd.CH.sub.2in which R.sub.f denotes a linear or branched perfluoroalkyl radical containing from 3 to 6 carbon atoms.In contrast to F113, (perfluoroalkyl)ethylenes are not liable to degrade stratospheric ozone.
Abstract translation:为了在固体表面的清洁和干燥中替代1,1,2-三氯-1,2,2-三氟乙烷(F113),本发明提出使用式R f CH = CH 2的(全氟烷基)乙烯,其中 Rf表示含有3至6个碳原子的直链或支链全氟烷基。 与F113相反,(全氟烷基)乙烯不易降解平流层臭氧。
Abstract:
This fixator (1) comprises a rigid bar (7), two pin-holder assemblies (8, 9) which can be moved relative to this bar (7), and means (13, 22) with which it is possible to immobilize each pin-holder assembly (8, 9) in a defined position relative to the bar (7). According to the invention: the bar (7) has a cylindrical main part (10) and a spherical part (11) at one end; a first pin-holder assembly (8) comprises a one-piece body (12) with a bore passing through it to permit its engagement by sliding on the cylindrical part (10) of the bar (7); and the second pin-holder assembly (9) comprises a one-piece body (15) in which a recess (16) is formed, this recess (16) having a zone of partially spherical shape with a radius slightly greater than that of said spherical part (11), this zone being such that it can receive this spherical part (11) with pivoting, without lateral play, and with a possibility of articulation of said second pin-holder assembly (9).
Abstract:
A vertebral osteosynthesis device employs outside faces of lateral walls of each hooking element which are inclined toward each other such that they converge from the side opposite hooking elements designed to be attached to the bone, while a gripping element in the shape of a clamp has side arms with inside faces inclined at slopes that match those of outside faces of lateral walls. At least two gripping means are disposed beyond the lateral walls and are provided to move the gripping element such that the inside faces of its lateral arms abut the lateral walls, bringing them toward each other and sliding on them upon gripping, to bring the lateral walls closer together to lock each hooking element onto a support rod.
Abstract:
This method comprises the use of a repair equipment including a humeral rod (2) intended to be placed in the medullary cavity of the humerus, comprising at least one hole (6) for receiving a thread (11) for repositioning the tuberosities (101, 102) and for maintaining the latter with respect to the rest of the bone. Said hole (6) is formed in the metaphyseal portion of the humeral rod (2), in the anteroposterior direction thereof; and the repair equipment further comprises a so-called “guying” subassembly (3), to maintain the tuberosities (101, 102) when they re-installed, two second so-called “traction” subassemblies (4), for pulling of the tuberosities (101, 102) one toward the other, and two so-called third “pressing” subassemblies (5), for tackling the tuberosities (101, 102); each of these sub-assemblies comprises a needle and thread (11) connected to this needle, this thread (11) forming a loop.
Abstract:
The invention relates to an osteosynthesis plate for the osteosynthesis of small neighbouring bones. The inventive osteosynthesis plate (1) is dimensioned such that it can be positioned above the bones to be treated without resting on the larger neighbouring bones. According to the invention, the osteosynthesis plate comprises lateral holes (16) for the insertion of screws (6) which are used to fix same to the bones (2 to 5). The plate is characterised in that: (i) it comprises a flat face (10) which is intended to come into contact with the bones to be treated; and (ii) it comprises holes (16) for receiving screws (6), which have axes that are inclined in relation to the aforementioned flat face (10) and which are designed such that the inserted screws diverge towards the outside of the plate (1).
Abstract:
The prosthesis includes a main element wherein one part forms an articulation side, an element called the “radial” element and an intermediate sliding element. The articulation side that delimits the part of the main element is convex and presents a round form. The intermediate element forms a concave articulation side appropriate for cooperating with the convex articulation side that forms the main element, this concave articulation side presenting, in sectional view in the sagittal plane, that is in the plane in which the flexion and extension movement of the wrist takes place, a rounded circle form very slightly larger than that of the convex articulation side, and presenting, in sectional view in the frontal plane, that is in the plane in which the abduction and adduction of the hand takes place, a rounded circle form markedly larger than that of the convex articulation side.
Abstract:
The device includes at least one pin and parts for anchoring this pin to the vertebrae. The device includes spherical rings having a plurality of slots distributed on their peripheries. The head of each anchoring part has a cavity that may receive one of the rings with snap-on installation, and at least two lateral threaded holes. Each anchoring part includes a clamping ring presenting a central aperture in a conical form allowing the clamping ring to come into contact with the ring during tightening of the screws that are within the clamping ring.
Abstract:
A bone screw having a threaded proximal portion, a threaded median portion, and a threaded distal portion. The threaded proximal portion has a proximal thread with a constant diameter and a proximal pitch. The threaded median portion has a median thread with a constant diameter smaller than the diameter of the proximal thread and a median pitch that becomes increasingly smaller from a distal end of the threaded median portion towards a proximal end of the threaded median portion. The threaded distal portion has a distal thread having a constant diameter that is smaller than the diameter of the median thread and a distal pitch that is larger than the median pitch at the distal end of the threaded median portion.
Abstract:
A bone screw (1) having a threaded proximal portion (2), a threaded median portion (3), and a threaded distal portion (4). Threaded proximal portion (2) has a core (11) with a constant diameter and a proximal thread (12) with a constant diameter and a proximal pitch (P2). The threaded median portion (3) has a core (15), which is conical, with a diameter becoming increasingly larger from the distal end of the threaded median portion (3) to the proximal end thereof, and thread (16), which has a constant diameter smaller than the diameter of the thread (12) of the proximal threaded portion (2). The pitch of thread (16) of the threaded median portion (3) becomes increasingly smaller from the distal end of the threaded median portion (3) towards its proximal end. At the proximal end of the threaded median portion (3), the pitch of thread (16) is larger than the pitch (P2) of the thread (12) of the threaded proximal portion (2). The threaded distal portion (4) has a core (17) and thread (18), both having a constant diameter, and with thread (18) having a diameter that is smaller than the diameter of the thread (16). The pitch (P4) of the thread (18) of the threaded distal portion (4) is larger than the pitch of thread (16) at the distal end of the threaded median portion (3).
Abstract:
A bone screw (1) having a threaded proximal portion (2), a threaded median portion (3), and a threaded distal portion (4). Threaded proximal portion (2) has a core (11) with a constant diameter and a proximal thread (12) with a constant diameter and a proximal pitch (P2). The threaded median portion (3) has a core (15), which is conical, with a diameter becoming increasingly larger from the distal end of the threaded median portion (3) to the proximal end thereof, and thread (16), which has a constant diameter smaller than the diameter of the thread (12) of the proximal threaded portion (2). The pitch of thread (16) of the threaded median portion (3) becomes increasingly smaller from the distal end of the threaded median portion (3) towards its proximal end. At the proximal end of the threaded median portion (3), the pitch of thread (16) is larger than the pitch (P2) of the thread (12) of the threaded proximal portion (2). The threaded distal portion (4) has a core (17) and thread (18), both having a constant diameter, and with thread (18) having a diameter that is smaller than the diameter of the thread (16). The pitch (P4) of the thread (18) of the threaded distal portion (4) is larger than the pitch of thread (16) at the distal end of the threaded median portion (3).