Surgical applicator tip for delivering clips of clamps

• US 6,793,663 B2
• Filed: 01/29/2002
• Issued: 09/21/2004
• Est. Priority Date: 07/30/1999
• Status: Expired due to Term

• Current Assignee: Forschungszentrum Karlsruhe Gmbh
• Original Assignee: Forschungszentrum Karlsruhe Gmbh
• Inventors: Herrmann, Günter, Kneifel, Bernhard
• Primary Examiner(s): Reip, David O.
• Assistant Examiner(s): Baxter, Jessica R.
• Application Number:
  US10/059,517
• Publication Number:
  US 20020065535A1
• Time in Patent Office: 966 Days
• Field of Search: 606/142, 606/143, 606/213, 606/219, 606/220, 606/221, 606/153-159, 227/175.1, 227/176.1, 227/177.1, 227/901, 227/902
• US Class Current: 606/143
• CPC Class Codes: A61B 17/0682 for applying U-shaped staples or clamps, e.g. without a forming anvil
• CPC Class Codes: A61B 17/10 for applying or removing wound clamps, e.g. containing only one clamp or staple A61B17/076 takes precedence; containing multiple wound clamps A61B17/068; Wound clamp magazines containers, packaging elements or packages specially adapted for particular articles or with special means for dispensing contents B65D83/00, B65D85/00
• CPC Class Codes: A61B 17/1222 Packages or dispensers therefor clip magazines incorporated in a clip-applying instrument A61B17/128; for surgical articles A61B50/30
• CPC Class Codes: A61B 17/1285 for minimally invasive surgery
• CPC Class Codes: A61B 17/3421 Cannulas
• CPC Class Codes: A61B 2017/2927 the angular position of the head being adjustable with respect to the shaft
• CPC Class Codes: A61B 2090/038 during shipment

Abstract

In a surgical applicator tip for delivering clips used for connecting tissues, the applicator tip includes a magazine chamber, which receives a magazine with clips having tissue engagement claws and an operating mechanism by which the clips can be removed from the magazine and supplied to the front end of the applicator such that the claws project forwardly therefrom the applicator tip for piercing and engaging tissue parts. Each clip includes a shoulder with an elbow lever structure which, with the tissue pierced by the claws, is pushed against the shoulder whereby the claws are tilted toward each other for firmly holding the tissue parts in contact with each other.

Claims

1. A surgical applicator tip for delivering clips for joining tissue parts, said applicator tip comprising an applicator tip housing having a magazine chamber, a magazine for containing clips disposed in said magazine chamber, and an operating mechanism for successively removing clips from said magazine for installation in tissue parts, each of said clips including a shoulder portion and curved claws projecting from said shoulder portion at opposite ends thereof, and an elbow lever structure disposed on, and connected to, said shoulder portion at said opposite ends thereof so that the free ends of said claws move toward each other when said elbow lever structure is straightened, said clips being supported with their shoulder portions on a support bar one adjacent the other and being biased toward the front end of said applicator tip, said magazine having a front cover which is removable after insertion of said magazine into said magazine chamber for releasing said clips and a pivotably supported magazine lid with a projection extending spring-biased into a recess in said applicator tip when said magazine is disposed in said magazine chamber for retaining said magazine in said magazine chamber, said applicator tip further including a transport plunger for moving said clips and a closing plunger for engaging said elbow lever structure for closing said clips, both said plungers being operated from a handle of said surgical applicator by way of an operating wire, said transport plunger having engagement prongs for engaging a front clip and moving it toward the front end of said applicator tip while pivoting said clip about 90°

so that the claws of said clip project forwardly from said applicator tip and said closing plunger is then movable into engagement with the side of said shoulder opposite said claws for engaging said elbow lever structure with a sufficient force to straighten said elbow lever structure thereby causing the claws to move toward each other for firmly retaining tissue portions engaged therebetween.

2. A surgical applicator tip according to claim 1, wherein said magazine chamber has a front end wall which is rounded for guiding said clip from a storage position, in which said claws extend normal to the direction of movement, to said 90°

pivoted position, in which said claws project forwardly for movement of said clip to the front end of said applicator tip.

3. A surgical applicator tip according to claim 2, wherein said front end wall includes a recess and said magazine includes a pivotable lid with a lip received in said recess when said magazine is disposed in said magazine chamber for locking said lid in a closed position and retaining said magazine in said magazine chamber.

4. A surgical applicator tip according to claim 3, wherein said transport plunger includes prongs at its front end and said clips include projections at opposite ends of said shoulders, said prongs including engagement recesses for engaging said projections of said clips and moving said clips to the front end of said applicator tip.

5. A surgical applicator tip according to claim 4, wherein said applicator tip includes a guide channel for guiding said clips to the front end of said applicator tip and said guide channel includes spring guide means permitting forward movement of said clips but preventing backward movement of said clips.

6. A surgical applicator tip according to claim 5, wherein, at its front, said guide channel includes at least one retaining clamps which holds a clip moved to the front end of said application tip in position with its claws projecting from said applicator tip.

7. A surgical applicator tip according to claim 6, wherein a ramp surface is provided at the front end of said magazine chamber so as to lead upwardly to said guide channel for leading said closing plunger into said guide channel behind said clip for actuating said elbow lever structure to close said clip.