Unlock instant, AI-driven research and patent intelligence for your innovation.

Pedicle screw system including locking screws with threaded notches

A thread and cut technology, applied in the field of pedicle screw systems including locking screws with thread cuts, can solve the problems of sensitive, chamfered thread elevation, etc.

Active Publication Date: 2021-10-26
AESCULAP AG
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is also disadvantageous that the chamfered threaded face, especially in the part close to the peak, is very thin and thus sensitive

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pedicle screw system including locking screws with threaded notches
  • Pedicle screw system including locking screws with threaded notches
  • Pedicle screw system including locking screws with threaded notches

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] figure 1 A clamping screw (retaining screw) 1 according to the prior art is shown in side view. The clamping screw 1 is in the form of a retaining screw and comprises a clamping screw thread 2 in the form of a male thread. The clamping screw has a single-start thread and has a thread cutout 3 and a threaded face 4 . The thread cutout 3 and the threaded face 4 extend helically around the clamping screw base 5 . figure 1 Also shown is the central longitudinal axis 6 of the clamping screw 1 . On the protruding side of the clamping screw thread 2 , the clamping screw has a thread chamfer 7 . The latter is in the form of a step 8 and has a diameter d which is smaller than the thread mandrel diameter D of the clamping screw thread 2 k . Towards the clamping screw thread 2 , the step 8 terminates with a shoulder 9 which extends transversely to the longitudinal axis / screw axis 6 of the clamping screw 1 . Due to this alignment of the shoulder 9 , the thread 2 is chamfered ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a bone screw system comprising a bone screw (15) having a flare (14) forming a surgical connection for adjacent bone screws (15) socket of the longitudinal member and has a flared thread (18); and a clamping screw (1) which can be screwed into said flared thread (18) and has a function for clamping the The longitudinal member is locked to a clamping screw thread (2) in the socket, wherein the clamping screw thread (2) has a thread chamfer (7) on the entry side, wherein the thread chamfer (7) is introduced into said clamping screw thread (2), thereby starting to cut the thread elevation (4, 4a) in radial direction (R).

Description

technical field [0001] The present invention relates to a bone screw system, in particular a pedicle screw system, comprising a bone screw, especially a pedicle screw, the bone screw comprising: a receiving sleeve or a flare, especially provided on the head of the screw The receiving sleeve or flare forms the seat of the longitudinal support for the surgical connection of adjacent bone screws and correspondingly pedicle screws and has a flare thread; and a clamping screw adapted to be screwed Into the flared thread of the receiving sleeve, said clamping screw comprises a clamping screw thread for locking the longitudinal support by clamping in the seat, wherein the clamping screw thread has a thread cut / chamfer. Furthermore, the invention relates to a corresponding clamping screw for a bone screw system. Background technique [0002] Bone screws and pedicle screws are known from the prior art. The bone screws and pedicle screws are used for dorsal stabilization of the spin...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/70F16B35/04
CPCA61B17/7032F16B35/047
Inventor 斯蒂芬·林德纳斯温·克鲁格亚力山大·哈斯
Owner AESCULAP AG