Surgical instrument

a surgical instrument and endoscope technology, applied in the field of new and improved arthroscopic/endoscope surgical instruments, can solve the problem that the orientation of the cutting tool cannot be changed relative to the stem section, and achieve the effect of improving the accuracy and safety of the surgical instrumen

Inactive Publication Date: 2006-06-27
ZIMMER SPINE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the orientation of the cutting tool can not be changed relative to the stem section.

Method used

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  • Surgical instrument
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second embodiment

[0055]In the embodiment of the invention illustrated in FIGS. 1-8, the actuator assembly 38 is operable to bend the articulated section either upwardly or downwardly from the Z axis in the plane of the Y axis (FIG. 8). However, the articulated section 34 is constructed so that it is deflectable or bendable by forces applied to the instrument 32 or the articulated section 34 to deflect the instrument 32 to either side of the plane of the X and Z axes, in the manner indicated schematically in FIG. 8.

[0056]It is contemplated that it my be desirable to have the actuator assembly 38 constructed in such a manner as to be operable to bend the articulated section 34 in any desired direction. An embodiment of the invention having an actuator assembly constructed so as to deflect the articulated section 34 in my desired direction is illustrated in FIG. 9. Since the embodiment of the invention illustrated in FIG. 9 is generally similar to the embodiment of the invention illustrated in FIGS. 1-...

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Abstract

A surgical instrument includes a tubular stem section which extends from a handle. A tubular articulated section connects a surgical instrument with the stem section. An actuator assembly is connected with the handle and is operable to bend the articulated section to change the orientation of an instrument on an outer end portion of the articulated section relative to body tissue. The instrument on the outer end of the articulated section may be a rotatable cutting tool which is driven by a tubular drive element having a flexible section which extends through the articulated section. The articulated section is bent or flexed by a plurality of flexible elongated elements (wires). In one embodiment of the invention, a pair of elongated elements are provided to flex the articulated section in opposite directions. In another embodiment of the invention, four flexible elongated elements are provided to flex the articulated section in any one of four directions.

Description

BACKGROUND OF THE INVENTION[0001]The present invention relates to a new and improved arthroscopic / endoscopic surgical instrument, and more specifically, to an arthroscopic / endoscopic surgical instrument which may be used to remove tissue from a joint or other body space.[0002]Surgical instruments which may be used to remove tissue or perform other operations on tissue are disclosed in U.S. Pat. Nos. 4,499,899; 4,517,977; 4,649,919; and 4,834,729. The surgical instruments disclosed in these patents have stem sections which extend outwardly from a handle. A cutting tool or other device is disposed at the outer end of the stem section. The stem section is rigid. Therefore, the orientation of the cutting tool can not be changed relative to the stem section.SUMMARY OF THE INVENTION[0003]The present invention relates to a surgical instrument which is particularly well adapted for arthroscopic and / or endoscopic surgery. The surgical instrument has a stem section which is attached to a hand...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): A61B17/32A61B17/00A61B17/28
CPCA61B17/32002A61B2017/003A61B2017/00309A61B2017/2905A61B2017/2927A61B2017/2929
Inventor AUST, GILBERT M.TAYLOR, TIMOTHY E.
Owner ZIMMER SPINE INC
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