CN-115429359-B - Fastener cartridge including fastener cavities with fastener control features

Abstract

The present invention provides an end effector that may include 1) a fastener cartridge including a plurality of fasteners stored therein, and 2) an anvil configured to deform the fasteners. The anvil can further include an extension extending therefrom that can control the flow of tissue relative to the fastener cartridge and/or support the fasteners as they are ejected from the fastener cartridge. The extension may have different sizes and/or configurations.

Inventors

• T.W. Huytanma
• E.A. Schelling
• F.E. Shelton IV
• G.C. Heuer
• HUANG ZHIFAN

Assignees

• 伊西康内外科有限责任公司

Dates

Publication Date

20260512

Application Date

20150414

Priority Date

20140630

Claims (7)

1. 1. A fastener cartridge, comprising: A cartridge body comprising a platform configured to support tissue; A fastener cavity defined in the cartridge body, wherein the fastener cavity comprises a first cavity end comprising a first end wall and a second cavity end comprising a second end wall, and A fastener removably stored in the fastener cavity, the fastener comprising: A base; a first leg extending from the base, wherein the first leg is removably positioned in the first cavity end, and wherein the first leg is in contact with the first end wall, and A second leg extending from the base, wherein the second leg is removably positioned in the second cavity end, and wherein the second leg is in contact with the second end wall, Wherein the fastener cartridge further comprises a first protrusion extending from the platform, wherein the first protrusion is configured to support the first leg when the fastener is ejected from the fastener cavity, and a second protrusion extending from the platform, wherein the second protrusion is configured to support the second leg when the fastener is ejected from the fastener cavity Wherein each of the first and second projections is configured to engage tissue positioned on the fastener cartridge and restrict tissue flow relative to the fastener cartridge, and includes an arcuate ridge extending about a corresponding one of the first and second cavity ends of the fastener cavity, the arcuate ridge including a sleeve portion and a transition portion extending from an opposite end of the sleeve portion to the platform.
2. 2. The fastener cartridge of claim 1, wherein said first leg of said fastener comprises a first end and said second leg of said fastener comprises a second end.
3. 3. The fastener cartridge of claim 2, wherein said first end is positioned within said first protrusion when said fastener is stored in said fastener cavity and said second end is positioned within said second protrusion when said fastener is stored in said fastener cavity.
4. 4. The fastener cartridge of claim 2, wherein said first end is positioned below said first protrusion when said fastener is stored in said fastener cavity and said second end is positioned below said second protrusion when said fastener is stored in said fastener cavity.
5. 5. The fastener cartridge of claim 1, wherein said first and second projections extend said fastener cavities above said deck.
6. 6. The fastener cartridge of claim 5, wherein said first end wall of said fastener cavity extends seamlessly into said first projection and said second end wall of said fastener cavity extends seamlessly into said second projection.
7. 7. The fastener cartridge of claim 1, wherein a first distance between said first and second legs of said fastener is wider than a second distance between said first and second end walls such that said first leg is biased inwardly by said first end wall and said second leg is biased inwardly by said second end wall.

Description

Fastener cartridge including fastener cavities with fastener control features The present application is a divisional application of international application entering the national stage of china, having application date 2015, month 4, 14, international application number PCT/US2015/025639, national application number 201580032320.8, entitled "fastener cartridge comprising fastener cavities with fastener control features". Cross Reference to Related Applications According to 35 U.S. c. ≡119 (e), this non-provisional patent application claims the benefit of U.S. provisional patent application serial No. 61/980,291 entitled "FASTENING INSTRUMENTS AND FASTENING CARTRIDGES FOR USE THEREWITH" filed on date 4/16 in 2014, which is incorporated herein by reference in its entirety. Background The present invention relates to stapling instruments and, in various embodiments, to a surgical stapling instrument for preparing one or more staple lines. The stapling instrument can comprise a pair of cooperating elongate jaw members, wherein each jaw member can be adapted to be inserted into a patient and positioned relative to tissue to be stapled and/or severed. In various embodiments, one of the jaw members can support a staple cartridge having at least two laterally spaced rows of staples contained therein, and the other jaw member can support an anvil having staple-forming pockets aligned with the rows of staples in the staple cartridge. Generally, the stapling instrument can further include a pusher bar and a blade that are slidable relative to the jaw members to sequentially eject staples from the staple cartridge via cam surfaces on the pusher bar and/or cam surfaces on wedge sled pushed by the pusher bar. In at least one embodiment, the cam surface can be configured to activate a plurality of staple drivers carried by the cartridge and associated with the staples to urge the staples against the anvil and form laterally spaced deformed staple rows in tissue clamped between the jaw members. In at least one embodiment, the blade can follow the cam surface and cut tissue along a path between the rows of staples. An example of such a stapling instrument is disclosed in U.S. patent No.7,794,475, titled "SURGICAL STAPLES HAVING COMPRESSIBLE OR CRUSHABLE MEMBERS FOR SECURING TISSUE THEREIN AND STAPLING INSTRUMENTS FOR DEPLOYING THE SAME", the entire disclosure of which is incorporated herein by reference. The above discussion is merely intended to illustrate various aspects of the related art in the present technical field of the present invention and should not be construed as a negative sense to the scope of the claims. Drawings Various features of the embodiments described herein are described in detail in the appended claims. However, various embodiments of the organization and method of operation, together with advantages thereof, may be understood from the following description when taken in conjunction with the accompanying drawings in which: FIG. 1 is an elevation view of a surgical stapling instrument; FIG. 2 is a cross-sectional view of the end effector of the surgical stapling instrument of FIG. 1, taken along line 2-2 of FIG. 1; FIG. 3 is a cutaway perspective view of the end effector of FIG. 1; FIG. 4 is a cross-sectional view of the end effector of FIG. 1 showing staples contained therein in an unfired configuration; FIG. 5 is a pictorial illustration showing the staple of FIG. 4 in a fired configuration; FIG. 6 is a diagram showing the end effector of FIG. 1 being used to suture and transect tissue; FIG. 7 is a perspective view of a staple cartridge including a plurality of ridges extending from a cartridge body according to at least one embodiment; FIG. 8 is a detail view of the staple cartridge of FIG. 7; FIG. 8A is a cross-sectional view of the staple cartridge of FIG. 7; FIG. 9 is a detail view showing staples positioned within staple cavities defined in the staple cartridge of FIG. 7; FIG. 10 is a partial perspective view of a staple cartridge including a plurality of lateral ridges extending from the cartridge body according to at least one alternative embodiment; FIG. 11 is a partial perspective view of a staple cartridge including a plurality of lateral ridges extending from the cartridge body according to at least one alternative embodiment; FIG. 12 is a partial perspective view of a staple cartridge including a plurality of ridges surrounding proximal and distal ends of a staple cavity opening defined in the cartridge body according to at least one alternative embodiment; FIG. 13 is a partial perspective view of a staple cartridge including a plurality of ridges surrounding proximal and distal ends of a staple cavity opening defined in the cartridge body according to at least one alternative embodiment; FIG. 14 is a partial perspective view of a staple cartridge including a plurality of knurled ridges extending from the cartridge body in accordance with at least one alternative embodiment; FIG. 15