Abstract: A tool holder for holding a surgical reamer has a head (8) and a retaining device (14, 15). The head has an axis coincident with the axis of rotation of the reamer. The head is provided with at least one radially extending slot (10) receiving a plate (1, 2) of the reamer. The retaining device (14, 15) has a component which engages with a feature of the plate of the reamer. The feature is proximate the axis of rotation of the reamer in order to centrally retain the plate in the slot.

Abstract: Instrument holder comprising a shank (1) equipped with a head (2) designed to receive an instrument and a locking component (4) pushed against the head by a spring (9) bearing on a ring (11) sliding on the shank, and having means of connection (8, 12) on the shank which is engaged by rotation of the ring, in such a way that the release of the ring allows the locking component, the spring and the ring to slide freely in order to permit cleaning of the instrument holder.

Abstract: A modular tool connection assembly includes a housing which defines the main axis of assembly with a linear bore for containing the components of the assembly. The housing contains a connector component presenting a first taper portion. The connector is retained in the linear bore of the housing with a spring interposed between the connector and the housing. A tool containing a second taper portion is placed in axial engagement with the first taper causing the components to be securely connected. The spring limits the force applied between the taper portions allowing them to be disconnected easily.

Abstract: A low insertion profile surgical reamer for cutting a bone socket comprises a cutting structure. The cutting structure is rotatable about a longitudinal axis. The structure has a static profile area upon insertion of the reamer into the bone socket and a dynamic profile area generated upon rotation, both profile areas lying transverse to the axis. The static profile area is substantially smaller than the dynamic profile area. The reamer includes centrally located holes (18), allowing it to be fixed to a tool holder.

Abstract: A reamer intended for surgery, made up of a hollow body of revolution provided with four radial arms which are perpendicular to each other so as to form a cross for fixing the reamer on a reamer holder. The cross formed by the radial arms is made up of a first diametral bar (1), a pin (2) passing through the first bar at its center and protruding each side of this bar, and two radial bars (3, 4) which have an axial hole via which each of these radial bars is engaged on the pin. With this construction, which is simple to produce, it is possible to omit welds and to eliminate the cleaning problems inherent to these welds.

Abstract: According to the invention, a torque-transmitting assembly is described. A female coupling member defines a shape with a tapered bore. A radially flexible sleeve member has a wall with a tapered exterior surface, received within the bore, and an inner surface defining a through-bore. An elongated shaft member made of super-elastic alloy has an outer surface that is received within the through-bore. Relative motion among at least two of the members causes the inner surface to contact the outer surface, inducing a super-elastic activation in the shaft, simultaneously securing the members together in a fixed relative position. The radially flexible sleeve member has a plurality of collet fingers, which preferably contact the shaft at discrete locations. It is further preferred that the super-elastic activation in the shaft occurs as a result of the discrete contact thereby changing the cross-sectional shape of the shaft, which is generally non-circular, e.g., polygonal, in a further preferred form.

Abstract: A modular tool connection assembly includes a housing which defines the main axis of assembly with a linear bore for containing the components of the assembly. The housing contains a connector component presenting a first taper portion. The connector is retained in the linear bore of the housing with a spring interposed between the connector and the housing. A tool containing a second taper portion is placed in axial engagement with the first taper causing the components to be securely connected. The spring limits the force applied between the taper portions allowing them to be disconnected easily.

Abstract: A rotary surgical reamer assembly for removing bone and tissue from a joint to facilitate the installation of a prosthetic device. The assembly includes a hollow reamer body having an opening and a base portion. The base portion includes a first pivoting link member, a wall with a surface defining a central cavity, and a plurality of spaced apart cutting sites defining apertures through said wall. A shaft is configured to be demountably attached to a rotary source of power. The shaft has a rotary axis and a second pivoting link member coupled to the first pivoting link member. The axis of the shaft forms an angle to the base portion. A mechanism adjusts the angle of the hollow reamer body from an un-deployed position to a deployed position.

Abstract: An acetabular reaming system is disclosed of the type having a driver and a tool held together by a quick-release coupling mechanism The tool (10) has a hollow body (12) defining a domed shape with a rotational axis (14), an apex (16) aligned with the axis (14) and a hemispherical wall (18) extending from the apex (16) to an equatorial rim (20) spaced 90 degrees from the axis (14). The rim (20) has an edge (22) visible to the user that indicates the position of the tool (10) relative to the bone. A first plurality of cutting sites (24) is arrayed along the body (12) and a second plurality of cutting sites (28) is arrayed circumferentially along the edge (22). Preferably, the first plurality of cutting sites (24) present raised first teeth (30, 130, 230, 330) having a profile selected from continuous squared (30), continuous rounded (130), discontinuous squared (230) and tongued (330) profiles.

Abstract: Instrument holder comprising a shank (1) equipped with a head (2) designed to receive an instrument and a locking component (4) pushed against the head by a spring (9) bearing on a ring (11) sliding on the shank, and having means of connection (8, 12) on the shank which is engaged by rotation of the ring, in such a way that the release of the ring allows the locking component, the spring and the ring to slide freely in order to permit cleaning of the instrument holder.

Abstract: The cutter holder (1) has, on the one hand, parallel fixed fingers (7) equipped with a groove (15) and, on the other hand, moving locking fingers (10) of which the end (16) is preferably conical. The milling cutter (6) has at least one flat annular part pierced, on the one hand, with fixing holes and, on the other hand, with locking holes which are slightly angularly offset with respect to the locking fingers in a direction which is the opposite to the direction of rotation of the cutter. Once the cutter has been fitted over the fixed fingers and engaged in the grooves (15), engaging the locking fingers in the locking holes has the effect of locking the cutter on the fixing fingers.

Abstract: A surgical instrument is disclosed having a male portion with a tapered hexagonal tip for engaging a socket head screw. A shaft operatively carries the male portion, for transmitting torque to the tip as it is matingly engaged with the screw. A metallic ring, mounted on the male portion, removably retains the tip matingly engaged within the socket head. The ring is formed with an oblique slit and is radially compressible, the ring presenting a substantially continuous circumferential surface that is in interference fit within the socket.

Abstract: According to the invention, a torque-transmitting assembly is described. A female coupling member defines a shape with a tapered bore. A radially flexible sleeve member has a wall with a tapered exterior surface, received within the bore, and an inner surface defining a through-bore. An elongated shaft member made of super-elastic alloy has an outer surface that is received within the through-bore. Relative motion among at least two of the members causes the inner surface to contact the outer surface, inducing a super-elastic activation in the shaft, simultaneously securing the members together in a fixed relative position. The radially flexible sleeve member has a plurality of collet fingers, which preferably contact the shaft at discrete locations. It is further preferred that the super-elastic activation in the shaft occurs as a result of the discrete contact thereby changing the cross-sectional shape of the shaft, which is generally non-circular, e.g., polygonal, in a further preferred form.

Abstract: A modular tool connection assembly includes a housing which defines the main axis of assembly with a linear bore for containing the components of the assembly. The housing contains a connector component presenting a first taper portion. The connector is retained in the linear bore of the housing with a spring interposed between the connector and the housing. A tool containing a second taper portion is placed in axial engagement with the first taper causing the components to be securely connected. The spring limits the force applied between the taper portions allowing them to be disconnected easily.

Abstract: A reamer intended for surgery, made up of a hollow body of revolution provided with four radial arms which are perpendicular to each other so as to form a cross for fixing the reamer on a reamer holder. The cross formed by the radial arms is made up of a first diametral bar (1), a pin (2) passing through the first bar at its center and protruding each side of this bar, and two radial bars (3, 4) which have an axial hole via which each of these radial bars is engaged on the pin.

Abstract: Instrument holder comprising a shank (1) equipped with a head (2) designed to receive an instrument and a locking component (4) pushed against the head by a spring (9) bearing on a ring (11) sliding on the shank, and having means of connection (8, 12) on the shank which is engaged by rotation of the ring, in such a way that the release of the ring allows the locking component, the spring and the ring to slide freely in order to permit cleaning of the instrument holder.

Abstract: Instrument holder comprising a shank (1) equipped with a head (2) designed to receive an instrument and a locking component (4) pushed against the head by a spring (9) bearing on a ring (11) sliding on the shank, and having means of connection (8, 12) on the shank which is engaged by rotation of the ring, in such a way that the release of the ring allows the locking component, the spring and the ring to slide freely in order to permit cleaning of the instrument holder.

Abstract: The cutter holder (1) has, on the one hand, parallel fixed fingers (7) equipped with a groove (15) and, on the other hand, moving locking fingers (10) of which the end (16) is preferably conical. The milling cutter (6) has at least one flat annular part pierced, on the one hand, with fixing holes and, on the other hand, with locking holes which are slightly angularly offset with respect to the locking fingers in a direction which is the opposite to the direction of rotation of the cutter. Once the cutter has been fitted over the fixed fingers and engaged in the grooves (15), engaging the locking fingers in the locking holes has the effect of locking the cutter on the fixing fingers.

Abstract: Surgical reamer consisting of a cutting head integral with a drive rod for driving it in rotation. The cutting head has, to the rear, auxiliary cutting teeth whose cutting edges are oriented alternately rightward and leftward in such a way as to permit easy withdrawal of the reamer, by the cutting effect of said teeth, in both directions of rotation.

Abstract: A surgical reamer in the form of a cap (1) fitted with arms (4) extending from the circular edge of the reamer toward the axis of the reamer for its attachment to a reamer spindle. The reamer comprises a central disk (3) to which said arms (4) are attached. The disk is intended to display an item of information, in particular the diameter of the reamer. In this way, the diameter of the reamer or any other information may be read without handling the reamer and turning it upward.