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Surgical instrument with distal bearing assembly

A technology for surgical instruments and bearing components, which is applied in the field of surgical instruments with distal bearing components, and can solve the problems of reducing the effectiveness of micro-debridement instruments

Pending Publication Date: 2019-01-04
MEDTRONIC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, surgical instruments with distal drills that exhibit axial movement can reduce the effectiveness of microdebridement instruments by increasing stress on the inner tubular member and preventing accurate tracking of the instrument

Method used

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  • Surgical instrument with distal bearing assembly
  • Surgical instrument with distal bearing assembly
  • Surgical instrument with distal bearing assembly

Examples

Experimental program
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Effect test

Embodiment Construction

[0017] Embodiments of the present disclosure relate to cutting instruments having a distal bearing assembly to inhibit axial movement of the distal cutting tip.

[0018] In one embodiment, a cutting instrument includes an inner tubular member rotatably received within an outer tubular member and including a cutting member, such as a drill bit, at its distal end. The inner and outer tubular members each include a receptacle to facilitate their rotational relationship and control thereof through a handpiece that further supports both the inner and outer tubular members. Rotation of the drill bit via rotation of the inner tubular member causes debridement of the target tissue at the treatment site.

[0019] The outer tubular member includes sidewalls defining an internal passageway that acts as an irrigation channel to supply irrigation fluid to the treatment site near the drill bit. The cutting instrument has a thinner cross-sectional profile since the irrigation channel is inc...

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Abstract

A surgical cutting instrument comprises an outer tubular member having a proximal section, an intermediate section and a central lumen. An inner tubular member is rotatably received within the centrallumen and includes a distal end forming a cutting member extending distally beyond, and exposed relative to, the distal section of the outer tubular member. A bearing assembly is coupled to the outertubular member and the inner tubular member.

Description

[0001] The patent application of this invention is an invention with the international application number PCT / US2013 / 022656, the international application date is January 23, 2013, and the application number entering the Chinese national phase is 201380015338.8, and the name is "surgical instrument with distal bearing assembly" A divisional application of a patent application. Background technique [0002] Powered surgical instruments have been developed for use in many orthopedic otolaryngology (ENT) procedures and other procedures in and around the skull. One type of cutting instrument includes a drill bit supported by an inner tubular member that is rotatable relative to an outer tubular member. The drill bit is used to debride the target tissue at the treatment site. In many cases, the drill bit and / or treatment site is flushed to facilitate lubrication of the treatment site and to cool the drill bit. In other cases, suction is applied to the treatment site to remove deb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/32A61B17/3209A61B17/24A61B17/16
CPCA61B17/1688A61B17/24A61B17/32A61B17/3209A61B2017/1602A61B2017/320004A61B17/32002A61B2034/2051A61B2217/007
Inventor T·S·奥布莱恩二世
Owner MEDTRONIC INC