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Screwdriver for intra-oral implantation

Inactive Publication Date: 2001-09-27
DEGUSSA HULS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the rigid design as a 90.degree. angular screwdriver, adaptability is limited; for implants that are difficult to access, still, additional specialized screwdrivers must be held ready and used.

Method used

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  • Screwdriver for intra-oral implantation
  • Screwdriver for intra-oral implantation
  • Screwdriver for intra-oral implantation

Examples

Experimental program
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Effect test

Embodiment Construction

[0012] According to a preferred embodiment form of the invention, each shaft segment of the screwdriver features, at one of its ends, a concave gliding surface forming a cylinder segment, and at its other end, a convex gliding surface forming a cylinder segment, with the two cylinder segments featuring identical radii and axial directions that are offset from each other by 90.degree..

[0013] Between each two adjacent shaft segments a link is created that can only be rotated around one axis but which produces a rather stable connection of the two shaft segments when the longitudinal tightening device is tightened. Nonetheless, the screwdriver shaft can be adjusted in any direction, because the links between the shaft segments, which follow one to the next at short intervals, still make a twist possible within the two axes that are at a 90.degree. offset with each other.

[0014] Advantageously, the common tightening device of the shaft segments features at least two tightening wires whic...

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PUM

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Abstract

A screwdriver for intra-oral implantation features a screwdriver shaft (2), which, at one of its ends, is connected with a hand piece (1) and at its other end, via an angular gear drive (3), with a rotatable tool chuck (4). The screwdriver shaft (2) consists of shaft segments (6) that can, at least partially, be moved in relation to each other and that can be tightened by means of a common longitudinal tightening device for the purpose of fixing them in their relative positions. A drive shaft consists, in the area of the shaft segments (6) of individual shaft pieces that, in the connecting area of two shaft segments (6), are connected via an angular gear for the purpose of torque transmission.

Description

INTRODUCTION AND BACKGROUND[0001] The present invention concerns a screwdriver for intra-oral implantation with a screwdriver shaft, which, at one end, is connected with a hand piece and at the other end, via an angular gear, with a rotatable tool chuck, that is connected, via a drive shaft located inside the shaft of the screwdriver shaft, with a rotating drive located inside the hand piece.[0002] These types of screwdrivers are used to perform the screwing in processes that must be performed on tooth implants inside the oral cavity, and in particular to perform the screwing in processes that need to be performed to attach implant posts and screws to inserted implants. Due to differences in implant accessibility, so far, different types of screwdrivers of a rigid design have been used for this purpose. In a known screwdriver of the aforementioned type the hand piece is connected, via a straight rigid screwdriver shaft, with a 90.degree. angular gear, which is attached to a rotatabl...

Claims

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Application Information

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IPC IPC(8): A61C1/18A61C8/00
CPCA61C1/18A61C1/185A61C8/0089
Inventor HOLWEG, ANDREASKOHLER, CARSTEN GEORGKREMER, EGBERT
Owner DEGUSSA HULS AG
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