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Ribbed force sensor

  • US 8,621,939 B2
  • Filed: 07/01/2013
  • Issued: 01/07/2014
  • Est. Priority Date: 12/18/2007
  • Status: Active Grant
First Claim
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1. A force sensor apparatus for a surgical instrument comprising:

  • a tube portion including an outer surface and a lengthwise axis;

    a plurality of radial ribs, the plurality of radial ribs being inside the tube portion, each radial rib of the plurality of radial ribs extending lengthwise in the direction of the lengthwise axis, and each radial rib of the plurality of radial ribs extending radially along a radius of the tube portion to the tube portion; and

    a plurality of strain gauges, each strain gauge of the plurality of strain gauges being at the outer surface, each strain gauge of the plurality of strain gauge being positioned and aligned lengthwise with a corresponding radial rib of the plurality of radial ribs.

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