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Method and device for intracorporeal device for intracorporeal morselling of tissue and/or calculi during endoscopic surgical procedures

  • US 5,320,627 A
  • Filed: 03/17/1993
  • Issued: 06/14/1994
  • Est. Priority Date: 01/09/1991
  • Status: Expired due to Fees
First Claim
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1. A device for morselling material contained within an intracorporeally positioned sac, said device comprising:

  • a tubular cannula insertable through a body opening into the sac, said cannula having a proximal end, a distal end and at least one lumen extending longitudinally therethrough;

    an elongate cutting tool having a rotating cutting head mounted thereon, said cutting tool being insertable through said cannula such that the rotating cutting head is adjacent the distal end of said cannula;

    a drive motor connected to said cutting tool for rotationally driving said cutting head to effect morsellation of material which comes into contact with said cutting head;

    a rigid protective assembly on the distal end of said cannula, said protective assembly comprising a plurality of rigid tip members movably connected to said cannula and alternately moveable between (i) a "closed" configuration wherein said rigid tip members extend generally forward of the distal end of said cannula and (ii) a "splayed" configuration wherein said tip members diverge apart from one another and outwardly from said closed configuration such that said tip members are spaced apart from one another and form a protective assembly beyond the distal end of said cannula;

    said protective assembly being constructed relative to said elongate cutting tool such that, when said elongate cutting tool is inserted through said cannula, said cutting tool will engage and push the protective assembly from its "closed" configuration to its "splayed" configuration, said device including means for limiting the advancement of said rotating cutting head beyond a fully advanced operative position whereat said rotating cutting head is proximal to a distal end of said protective assembly when said protective assembly is in said splayed configuration.

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