Apparatus for applying surgical clips with improved jaw and closure mechanisms

• US 5,792,150 A
• Filed: 06/07/1995
• Issued: 08/11/1998
• Est. Priority Date: 10/08/1993
• Status: Expired due to Term

• Current Assignee: United States Surgical Corporation (Medtronic Plc)
• Original Assignee: United States Surgical Corporation (Medtronic Plc)
• Inventors: Peyser, Mark S., Pratt, James R., Kappel, Gary S., Aranyi, Ernie, Cuny, Douglas J., Tovey, H. Jonathan, Phillips, Paul J.
• Primary Examiner(s): SCHMIDT, JEFFREY
• Application Number:
  US08/476,607
• Time in Patent Office: 1,161 Days
• Field of Search: 606/143, 606/142, 606/139, 606/151, 606/205-208
• US Class Current: 606/143
• CPC Class Codes: A61B 17/1285 for minimally invasive surgery
• CPC Class Codes: A61B 2017/2929 with a head rotatable about the longitudinal axis of the shaft
• CPC Class Codes: Y10S 227/901 Surgical clip appliers

Abstract

An apparatus is provided for applying surgical clips which includes provisions for applying a partially closed clip to ducts or shunts during a surgical procedure. The apparatus includes a ratchet mechanism for permitting incremental closure of a pair of jaw members. A slide member is associated with the ratchet mechanism to prevent a movable handle from opening during a closing stroke until the closing stroke is completed.

Claims

1. An apparatus for applying surgical clips comprising:

a handle portion having a movable handle and a stationary handle;

a body portion extending from said handle portion and including a supply of clips;

a jaw mechanism extending from said body portion at an end opposite to said handle portion and movable between an open position for receiving a clip and a closed position for forming a clip in response to movement of said movable handle;

a ratchet mechanism including at least one rack member and at least one pawl member disposed within said handle portion for permitting incremental closure of said jaw mechanism; and

a slide member associated with said ratchet mechanism for preventing said movable handle from opening during a closing stroke until said closing stroke is completed, said slide member being linearly movable.

2. An apparatus according to claim 1, wherein said slide member is disposed on said ratchet mechanism for providing resistance against an opening movement of said movable handle during said closing stroke.

3. An apparatus for applying surgical clips comprising:

a handle portion having a movable handle and a stationary handle;

a body portion extending from said handle portion and including a supply of clips;

a jaw mechanism extending from said body portion at end opposite to said handle portion and movable between an open position for receiving a clip and a closed position for forming a clip in response to movement of said movable handle;

a ratchet mechanism including at least one rack member and at least one pawl member disposed within said handle portion for permitting incremental closure of said jaw mechanism;

a mechanism associated with said ratchet mechanism for preventing said movable handle from opening during a closing stroke until said closing stroke is completed, wherein said preventing mechanism comprises a slide member disposed on said ratchet mechanism for providing resistance against an opening movement of said movable handle during said closing stroke; and

a pair of springs disposed on said ratchet mechanism for biasing said slide member against said movable handle during said closing stroke.

4. An apparatus for applying surgical clips comprising:

a handle having a movable grip and a stationary grip;

a body portion extending from the handle and including a supply of clips;

a pair of jaws extending from the body portion at an end opposite to the handle and being movable between an open position for receiving a clip and a closed position for forming a clip in response to movement of the movable grip; and

at least one rack and pawl member disposed within the handle portion for permitting incremental closure of the pair of jaws, the rack and pawl member including a pair of springs and a slide member disposed on the rack and pawl member, whereby the pair of springs biases the slide member against the movable grip during the closing stroke of the movable grip, the slide member further providing resistance against an opening movement of the movable grip during the closing stroke.