Non-metallic, bio-compatible hemostatic clips

• US 4,418,694 A
• Filed: 07/13/1981
• Issued: 12/06/1983
• Est. Priority Date: 06/18/1979
• Status: Expired due to Term

• Current Assignee: Ethicon Incorporated (Johnson & Johnson)
• Original Assignee: Ethicon Incorporated (Johnson & Johnson)
• Inventors: Jewusiak, Stephen J., Beroff, Howard, Doddi, Namassivaya
• Primary Examiner(s): Rosenbaum, C. Fred
• Assistant Examiner(s): Shedd, C. W.
• Application Number:
  US06/282,461
• Time in Patent Office: 876 Days
• Field of Search: 128/325, 128/326, 128/346
• US Class Current: 606/158
• CPC Class Codes: A61B 17/122 Clamps or clips , e.g. for the umbilical cord for the vas deferens A61F6/206

Abstract

Non-metallic, bio-compatible hemostatic clips of absorbable or nonabsorbable materials are formed by two legs joined with a resilient hinge. One leg terminates in a hook member which secures the other leg when the clip is closed. The clip applier is a forceps-type instrument having channeled jaws especially adapted to receive and close the clip.

Claims

1. A sterile, plastic, hemostatic clip comprising:

first and second leg members joined at their proximal ends by resilient hinge means and terminating at their distal ends in latch means, each leg member having an outer surface and a vessel clamping inner face, said vessel clamping inner face being in opposition to the vessel clamping inner face of the other leg member;

said first leg member having a body portion and a latch portion, said latch portion being disposed at the distal end of said leg member, said latch portion comprising a deflectable hook member extending from the inner face of said first leg member, said hook member having an inner face spaced from the inner face of said first leg member and substantially parallel thereto, said hook member having a connecting face, said connecting face being disposed at an acute angle to the inner face of said hook member and connecting to the inner face of said first leg member at an obtuse angle therewith, said hook member having an end face extending from the inner face of said hook member and and beveled so as to form an acute angle with the inner face of said hook member, the portion of said hook member containing said connecting surface immediately adjacent the body portion of said first leg member having a reduced thickness as compared to the thickness of the first leg member to improve the deflectability of said hook member;

the body portion of said first leg member between said latch portion and said hinge means comprising a center section and two side sections, said center section being the thickest part of said body portion, the outer surface of said center section being parallel to the vessel clamping inner face of said first leg member, a first side section connecting said center section to said latch portion, the outer surface of said first side section having a substantially constant radius of curvature extending from said center section to said latch portion and a second side section connecting said center section to said hinge means, the outer surface of said second side section being tapered from the center section to the resilient hinge means;

said second leg member terminating at the distal end thereof in a complementary locking portion of the latch means, said locking portion comprising an end face of said second leg member, said end face having a bevel complementary to the bevel on the end face of said hook member, said complementary bevel forming an obtuse angle with the inner face of said second leg member and adapted to deflect the said hook member and enter the space between the inner face of said hook member and the inner face of said first leg member, the greater portion of the outer surface of said leg member being substantially parallel to the inner face of said member;

whereby when said first and second leg members are pivoted about said hinge means the distal end of said second leg member deflects and engages the hook member of the first leg member to lock the clip in a closed position.

2. The hemostatic clip of claim 1 wherein said resilient hinge means is defined by a line of minimum clip thickness at the juncture of the first and second leg members.

3. A hemostatic clip of claim 1 wherein said second leg member includes a channel disposed in the outer surface of said leg member and extending across the width of the outer surface of said leg member said channel being disposed proximally from the distal end of said second leg member a distance corresponding to the length of the inner face of said hook member.

4. The hemostatic clip of claim 1 wherein said leg member includes a lug disposed from the outer surface of said second leg member and extending across the width of the outer surface of said second leg member said leg being disposed proximally from the distal end of said second leg member a distance corresponding to the length of the inner face of said hook member.