摘要:
A bone screw is created, with a thread section with a tip at a first end and a head for engaging with a screwdriver at the opposite second end, which serves as traction element to connect shattered or split off parts of bones to one another. So that fusion of the screw with the bones can take place, the thread section is constructed as tubular and its wall has a plurality of recesses.
摘要:
A bone screw is created, with a thread section (1) with a tip (6) at a first end and a head (8) for engaging with a screwdriver at the opposite second end, which serves as traction element to connect shattered or split off parts of bones to one another. So that fusion of the screw with the bones can take place, the thread section (1) is constructed as tubular and its wall has a plurality of recesses.
摘要:
The present invention concerns a flexible connecting device for implantation into the human or animal body and especially for stabilizing the spine with a first rod, which has at least one flexible middle section and at least two connecting sections. At least one part of the flexible middle section includes an adjustment element, such as a flexible element or a stabilization element, which is arranged outside the cross-section of the first rod and connected to the first rod at a first location.
摘要:
An instrument for assembling a bone anchoring device includes a shank with a shaft section to be anchored in a bone and a engagement end, a head being separate from the shank and having a through bore, and a receiving part having a first end, a second end and a longitudinal bore extending from the first to the second end, the head being positionable within the bore at the second end. The instrument includes a holding portion arranged to hold a pin, which has a rod section with a length and a diameter suited to fit and extend at least through the bore of the head, and which has a free end portion extending from the rod section such as to project from the bore of the head when the pin is inserted, and configured to engage with the engagement end of the shank.
摘要:
An anchoring element for use in spinal or bone surgery is described. A shaft (1) for anchoring in a vertebra or bone section is connected to a receiving part (22) which serves to connect to a rod (100) having a pre-determined diameter (D). The receiving part (22) provides a U-shaped recess (26) forming a channel for the reception of the rod and two legs (27, 28). The legs are free on their end and have a thread (30, 31) that cooperates with a securing element to fix the rod in the receiving part. When inserted into the receiving part, the rod surface facing the end surface (29) is at a pre-determined distance (A) in an axial direction from the end surface (29). The thread (30, 31) of the legs extends from the end surface a distance that is smaller than or equal to the pre-determined distance (A). Also, an undercut (33, 34) is provided adjacent to the thread whose edge farthest away from the thread is located at a distance (B) from the end surface. Distance (B) is larger than the pre-determined distance (A). The anchoring element is cheap to manufacture and has a reduced overall height as compared to the known anchoring elements. Methods of using the anchoring element also are described.
摘要:
A spacer for insertion between two vertebrae includes a variable axial length and comprises a first member having a hollow interior and a tubular wall and a second member having a hollow interior and a tubular wall the second member being slidable within the first member in an axial direction for adjusting an overall length. At least the first member or the second member comprises an access opening in its wall, the opening having a size which is adapted for inserting bone grafts through the opening into the interior. The spacer further comprises a length adjustment structure being engageable with an expansion tool for telescoping the second member relative to the first member and a locking structure for fixing the axial length. The access opening, the length adjustment structure and the locking structure are arranged so as to be accessible from the same side of the spacer. The spacer allows in situ filling of bone grafts into its interior and an improved handling.
摘要:
A bone fixing device and in particular a device for stabilizing cervical vertebrae is provided, (with) a plate (2, 200) with at least one recess (5) for guiding through a section (15, 61, 62) of a bone screw (6, 60), a connecting element (20, 30), displaceable in the recess, for connecting the bone screw to the plate and a securing device (10, 11) for securing the connecting element against falling out of the recess.
摘要:
A space keeper for insertion between two vertebrae which has a variable axial length is provided. The space keeper possesses a sleeve-like first member (2) and a second member (3) guided in the latter and movable relative to the first member in the axial direction for adjusting an overall length. In order that adjustability during operating is facilitated the two members (2, 3) are connected to one another by a lever (7, 8), wherein one centre of motion (16) of the lever is connected to one member (3) and the other centre of motion (18) is connected in terms of action to the other member (2).
摘要:
The present invention concerns a space holder, especially for vertebrae or intervertebral discs for implantation into human or animal organisms, having a cylinder-like body (1) and, at the ends of the cylinder-like body, means (2) provided for connecting to adjacent body parts, said cylinder-like body (1) essentially being formed as a solid cylinder from at least one material that is elastically deformable under the conditions of use, such that the space holder is compressible and extensible in the axial direction and, with reference to means (2) provided at the ends for connecting the space holder to adjacent body parts, can bend about a radial axis of rotation (13).
摘要:
A tubular spacer and a method for the manufacture of the spacer is described. The tubular spacer has a first rim on a first end, a second rim on its opposite second end, and a jacket extending between said first and said second rims. The jacket has a tapered section adjacent to at least one end. The spacer is suitable for use in tubular bone surgery where it is necessary that the spacer adapts to different bone cross-sections. To make this tubular spacer, a cylinder having a tubular jacket body is expanded and/or narrowed at one or both of its ends. Methods for using the spacer as well as kits for making the spacers are described.