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Clevis having deflection limiting stops for use in an endoscopic biopsy forceps instrument

  • US 5,722,421 A
  • Filed: 09/15/1995
  • Issued: 03/03/1998
  • Est. Priority Date: 09/15/1995
  • Status: Expired due to Term
First Claim
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1. A deflection-limiting clevis for use in an endoscopic instrument having a pair of jaws, each jaw having a proximal tang for coupling the jaw to a control wire, said clevis comprising:

  • a) a substantially cylindrical base;

    b) first and second clevis arms extending distally from said base, each of said first and second clevis arms having an interior surface and a distal end;

    c) a clevis axle extending perpendicularly between said first and second clevis arms near their distal ends, and on which the jaws are mounted so that the tangs of the jaws extend proximally of said clevis axle; and

    d) at least one stop extending from said interior surface of one of said first and second clevis arms toward said interior surface of another of said first and second clevis arms, said at least one stop being located proximal of said clevis axle and distal of said base and having at least one engaging surface for engaging the tang of at least one of the jaws to limit deflection of the at least one of the jaws when the jaws are in a closed position.

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