×

Impact lithotrypsy

  • US 5,281,231 A
  • Filed: 01/21/1992
  • Issued: 01/25/1994
  • Est. Priority Date: 02/22/1989
  • Status: Expired due to Fees
First Claim
Patent Images

1. Apparatus for applying an energy impulse to cause fracturing of hard formations in the body comprising:

  • a flexible guide adapted for insertion through a body passage, said flexible guide having a terminal portion defining an interior space,an end cap affixed to said terminal portion adapted for reciprocating movement,fluid disposed in the interior space of said terminal portion adjacent said end cap,means for applying through said flexible guide a series of light energy pulses, the energy of which produces a corresponding series of rapid vaporizations of said fluid adjacent said end cap thereby to cause a series of reciprocal mechanical pulse-like movements of said end cap.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×