摘要:
The invention relates to a rasp attachment (40) for a surgical tool holder, which comprises a fastening device (44) for fastening the rasp attachment (40) to the motor-driven surgical tool holder and a rasp area (50) which is adapted to remove material from a surface due to a reciprocating motion of the raps attachment (40) caused by the motor-driven surgical tool holder. The rasp attachment (40) is convex and elastically deformable at least in the rasp area (50).
摘要:
A plate, its use, a system and an attachment method of the plate. The plate (1) comprises a first part (9) intended for attaching to at least one first bone fragment, and a second part (10) intended for attaching to at least one second bone fragment, and an upper surface (2) and a lower surface (3). The upper surface (2) comprises a plurality of holes, of which holes some are preholes (4), in at least one of which preholes an actual, threaded attachment hole (13) is arranged to be prepared in situ, and at least one free hole (5,7), which is a through hole extending from the upper surface (2) to the lower surface (3), the smallest diameter of the free hole (5,7) being larger than the diameter of the preholes (4).
摘要:
The invention relates to a rasp attachment (40) for a surgical tool holder, which comprises a fastening device (44) for fastening the rasp attachment (40) to the motor-driven surgical tool holder and a rasp area (50) which is adapted to remove material from a surface due to a reciprocating motion of the raps attachment (40) caused by the motor-driven surgical tool holder. The rasp attachment (40) is convex and elastically deformable at least in the rasp area (50).
摘要:
An internal fixation pin (10) comprises first (12) and second portions (14) with threads of different diameters, but having the same pitch and thread depth. The first portion (12) includes a self-tapping tip (20). No enlarged head portion is provided to the pin at the end opposite the tip. A non-threaded shaft portion (26) is frangibly connected to the second portion (14) and is a mechanism for rotating the pin for threaded insertion into bone. A plurality of circumferentially spaced-apart longitudinal grooves (30) are provided on the second portion (14) adjacent its intersection with the shaft portion (26). After insertion of the first (12) and second portions (14) across a fracture, the shaft portion (26) is removed. The grooves (30) permit rotation of the pin for removal should removal be necessary. A driver (40) for pin removal is also provided, as well as a mill tool (60).
摘要:
A bone screw (10) having a continuously varying pitch includes a tapered root portion (12) having a relatively small diameter on a leading end (16) of the screw and a larger trailing end (18) diameter. The pitch of the screw decreases between the leading and trailing ends thus causing the bone fragments in a fracture to be drawn together when the screw is installed across the fragments. The radially outer diameter of the threads (24, 30) increases between the leading and trailing ends thus causing each successive thread portion to cut into bone radially outwardly from the preceding thread portion thereby providing uncut bone in which the succeeding threads can gain purchase. In a second embodiment used for interphalangeal joint arthrodesis, an unthreaded cylindrical end (66, 68) extends from the leading and trailing ends of the threaded root.
摘要:
Disclosed are sterile instruments and instrument kits for use in surgery, said instruments including a reamer assembly comprising a reamer depth stop and a reamer, a grommet placer instrument, and a sizing instrument for use in joint implant surgery. The invention also concerns a kit for use in joint implant surgery, comprising said reamer assembly, said grommet placer instrument, a wire guide, comprising a wire guide body, and a guide wire. A method for using one or more of the instruments and kit as described herein is also provided.
摘要:
A pin made of cortical bone may be inserted into adjoining bones of a toe to align and secure the bones. The pin may have barbs to prevent migration of the pin. The pin may include a shoulder to further prevent migration of the pin from the bones, to increase the strength of the pin, and to increase the surface area between the bone pin and the host bone. The pin may further include flattened portions on its circumference to aide in rotating the pin during insertion. The pin may be treated to reduce brittleness.