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Screw with insertion post

A technology of screw and screw body, applied in medical science, internal bone synthesis, fastening device, etc., can solve problems such as expensive

Active Publication Date: 2017-04-19
メダルティスホールディングアクチェンゲゼルシャフト
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such specialized tools are expensive on the one hand, and on the other hand, they are not always available to doctors who specialize in explantation

Method used

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  • Screw with insertion post
  • Screw with insertion post
  • Screw with insertion post

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0083] 1a and 1b show a longitudinal section through a first exemplary embodiment of a screw 1 according to the invention. The screw 1 has a shank 2 with a thread 14 . In addition, the screw 1 has a spike 15 and a screw head 16 positioned opposite the spike 15 . The screw head 16 has a head side 3 . A socket 4 is formed on the head side 3 . An opening 8 for receiving a post tip 9 of an insertion post 6 is provided adjacent to the socket 4 . The bore 8 for receiving the column tip 9 has an internal thread (not shown). The column tip 9 has an external thread (not shown) which can be screwed into said internal thread of the bore 8 .

[0084] In FIG. 1 a, the post tip 9 is connected to the post 20 of the insertion post 6 via the predetermined breaking point 7 . The mast 20 is only partially shown in Figures 1a and 1b. In this case, the predetermined breaking point 7 is formed in the form of a constriction between the pillar tip 9 and the pillar 20 . The insertion post 6 is ...

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PUM

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Abstract

Screw (1), in particular a bone screw, comprising a head (16), a shaft (2) and a point (15). The screw (1) has a recess (4) with a contour (5) on a head side (3). The screw (1) is provided with an insertion post (6) in the recess (4), which insertion post is connected to the screw (1) via a predetermined breaking point (7). After breaking the predetermined breaking point, a counter-contour (13) of a tool (12) can be brought into operative connection with the contour (5) of the recess (4). The predetermined breaking point (7) is arranged within the recess (4) such that, after removal of the insertion post (6), a transmission of torque is possible between the tool (12) and the screw (1) via the contour (5) and the counter-contour (13).

Description

technical field [0001] The invention relates to a screw with an insertion post and a method of manufacturing a screw with an insertion post according to the preambles of the independent claims. Background technique [0002] Hereinafter, for the sake of simplicity, the present invention will be described in conjunction with bone screws. However, this should in no way be construed as limiting. The screw according to the invention can also be used in other fields where screws are required. [0003] Screws are used where it is desired to fasten individual parts to each other. For example, several bone parts are fixed with bone screws after a fracture. Bone plates are also commonly used here, which are fixed to the bone by means of screws. [0004] During screwing in, there is a risk that the screw is screwed in so tightly that the screw part or the bone part is damaged. It may appear that the screw function is no longer guaranteed. In addition, the drive can be damaged, so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/86A61B17/88
CPCA61B17/8605A61B17/8872A61B17/8615A61B2090/037
Inventor B·朗厄P·朔伊布勒M·阿曼H·波茨霍弗
Owner メダルティスホールディングアクチェンゲゼルシャフト