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Instrument guide assembly for a bone plate and kit of a bone plate with such an instrument guide assembly

A technology of guiding components and guiding components, applied in the direction of bone drill guide, outer plate, fixator, etc., can solve the problems of misalignment stress, preventing the correct function of the bone plate, etc.

Active Publication Date: 2017-08-04
BIEDERMANN TECH GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Misalignment of the spherical portion of the bone anchor and the spherical seat in the plate may cause stress in the bone and may prevent proper function of the bone plate

Method used

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  • Instrument guide assembly for a bone plate and kit of a bone plate with such an instrument guide assembly
  • Instrument guide assembly for a bone plate and kit of a bone plate with such an instrument guide assembly
  • Instrument guide assembly for a bone plate and kit of a bone plate with such an instrument guide assembly

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Embodiment Construction

[0029] The following will refer to Figure 1 to 11d presents an instrument guide assembly and a first embodiment of a bone plate and such an instrument guide assembly. Such as figure 1 As shown in and 2, the bone plate comprises a plate part 1 which in this embodiment is a substantially elongated body having a top side 1a and a bottom side 1b. At least two (preferably a plurality) of holes 2 extend through the plate part 1 from the top side 1a to the bottom side 1b. The number and arrangement of the holes 2 can vary according to the size and shape of the plate part 1 . The holes 2 will be used to receive bone anchors (not shown), such as bone screws, to fix the plate part 1 on a bone surface, such as a fractured bone part or a vertebra.

[0030] In each hole 2 an insert 3 can be arranged which is detachably connected to the inner wall of the plate part 1 surrounding the hole 2 . The guide part 4 is received in the insert 3 . In the illustrated embodiment, a plurality of ...

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Abstract

An instrument guide assembly for a bone plate includes an insert (3,3') configured to be arranged in a hole (2) of a plate member (1), the insert (3,3') has a through-hole (30), and a guide member (4,4') is detachably arranged in the through-hole (30) of the insert (3,3'), the guide member (4,4') has a head portion (41), a shaft portion (42) extending from the head portion (41), a vertical axis (C) and a guide channel (40) extending through the head portion (41) and the shaft portion (41) for guiding a drill or other instrument therethrough. The insert (3,3') and the guide member (4,4') are used to connect each other. In an assembly state, the insert (3,3') can move in a limit range along the vertical axis of the shaft portion (42) between a first stop (43, 43a, 43', 43a', 43b') and a second stop relative to the guide member (4,4').

Description

technical field [0001] The present invention relates to an instrument guide assembly for a bone plate and a kit of a bone plate and such an instrument guide assembly. The instrument guide assembly includes an insert configured to be placed in a hole in a bone plate, and a guide member that provides guidance for a drill, guide wire or instrument for proper placement of the bone plate. Insert and guide part can be connected to each other in a loss-proof manner. The instrument guide assembly is particularly advantageous for bone plates having a polyaxial coupling between the bone anchor and the plate component of the bone plate. Background technique [0002] EP1878394A2 describes an orthopedic fixation plate system comprising a fixation plate comprising a hole with a spherically curved inner surface and a polyaxial bushing disposed in the hole. A removable guide is provided in the polyaxial bushing. The polyaxial bushing enables the surgeon to change the angle of each guide ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/17A61B17/80
CPCA61B17/1728A61B17/8057A61B17/1757A61B17/80A61B2017/0042
Inventor M·比德尔曼
Owner BIEDERMANN TECH GMBH & CO KG
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