Tissue stop for surgical instrument

• US 7,896,214 B2
• Filed: 09/23/2008
• Issued: 03/01/2011
• Est. Priority Date: 09/23/2008
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Farascioni, David
• Primary Examiner(s): Nash; Brian D
• Application Number:
  US12/235,751
• Publication Number:
  US 20100072257A1
• Time in Patent Office: 889 Days
• Field of Search: 227/180.1, 227/175.1, 227/19, 227/179.1
• US Class Current: 227/180.1
• CPC Class Codes: A61B 17/068 Surgical staplers , e.g. containing multiple staples or clampsstaplers containing only one staple A61B17/10; magazines or containers for staples A61B17/105; for performing anastomosis A61B17/115; staplers in general B25C5/00
• CPC Class Codes: A61B 17/072 for applying a row of staples in a single action , e.g. the staples being applied simultaneously
• CPC Class Codes: A61B 17/07207 the staples being applied sequentially
• CPC Class Codes: A61B 18/1442 Probes having pivoting end effectors, e.g. forceps
• CPC Class Codes: A61B 2017/07221 curved
• CPC Class Codes: A61B 2017/07278 characterised by its sled or its staple holder
• CPC Class Codes: A61B 2017/2945 Curved jaws
• CPC Class Codes: A61B 2018/1432 curved

Abstract

A surgical including a handle assembly, an elongated portion, an end effector, and a stop member is disclosed. The elongated portion extends distally from the handle assembly. The end effector is disposed adjacent a distal portion of the elongated portion and includes a first jaw member and a second jaw member. At least one jaw member is movable with respect to the other jaw member between spaced and approximated positions. The stop member is disposed adjacent a distal portion of the first jaw member and is pivotable with respect to the first jaw member between a first position, a significant portion of the stop member being positioned external to the first jaw member, and a second position capturing the tissue between the first jaw member and second jaw member.

Claims

1. A surgical instrument for surgically joining tissue, the surgical instrument comprising:

a handle assembly;

an elongated portion extending distally from the handle assembly and defining a longitudinal axis;

an end effector disposed adjacent a distal portion of the elongated portion, the end effector including a first jaw member and a second jaw member, the first jaw member including a knife channel, at least one jaw member being movable with respect to the other jaw member between spaced and approximated positions; and

a stop member disposed adjacent a distal portion of the first jaw member, the stop member being pivotable with respect to the first jaw member between a first position, a significant portion of the stop member being positioned external to the first jaw member, and a second position capturing the tissue between the first jaw member and second jaw member,

wherein the stop member includes a first leg and a second leg, the first leg and the second leg being positioned on opposite sides of the knife channel.

2. The surgical instrument of claim 1, further comprising first and second slots disposed on the first jaw member, each of the first and second slots being adapted to receive at least a portion of one of the first and second legs therein.

3. The surgical instrument of claim 2, wherein each of the first and second legs is configured to move at least partially through the first or second slot when the stop member moves towards its second position.

4. The surgical instrument of claim 1, wherein the first jaw member comprises a surgical staple cartridge.

5. The surgical instrument of claim 4, wherein the staple cartridge is curved with respect to the longitudinal axis.

6. The surgical instrument of claim 1, further comprising a biasing member disposed in mechanical cooperation with the stop member, wherein the biasing member biases stop member towards its first position.

7. The surgical instrument of claim 1, wherein the stop member includes a base and a stopping portion, the base being operatively connected to the stopping portion.

8. The surgical instrument of claim 7, wherein the stopping portion is pivotally connected to the base.