×

Surgical extractor

  • US 4,347,846 A
  • Filed: 10/14/1980
  • Issued: 09/07/1982
  • Est. Priority Date: 12/07/1979
  • Status: Expired due to Term
First Claim
Patent Images

1. In a surgical extractor for removing bodies from natural passages, of the type comprising a flexible tube adapted to be inserted in a natural passage where the body to be extracted is located, the distal end of the tube having a retractable cage formed by flexible metal wires which are retractable inside the tube for positioning the tube in the passage and extendable for trapping the body to be extracted,the improvement wherein the retractable cage is formed by a plurality of flexible metal wires arranged in pairs and disposed in helical paths, one wire of each pair being spiralled in clockwise direction and the other in anti-clockwise direction,the wires of each pair intersecting at a single point between the ends thereof,the spacing between wires in said cage being sufficient to permit the passage of said body into the interior of said cage.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×