Multi-use loading unit

• US 10,463,367 B2
• Filed: 12/13/2016
• Issued: 11/05/2019
• Est. Priority Date: 10/25/2011
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Kostrzewski, Stanislaw, Aranyi, Ernie, Scirica, Paul, Powers, William
• Primary Examiner(s): Lopez, Michelle
• Application Number:
  US15/376,979
• Publication Number:
  US 20170095250A1
• Time in Patent Office: 1,057 Days
• Field of Search: 2271751, 2271754
• 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 2017/00473 Distal part, e.g. tip or head A61B2017/00464 takes precedence
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/07214 Stapler heads
• CPC Class Codes: A61B 2017/07257 characterised by its anvil
• CPC Class Codes: A61B 2017/07271 characterised by its cartridge
• CPC Class Codes: A61B 2017/07278 characterised by its sled or its staple holder
• CPC Class Codes: A61B 2017/2927 the angular position of the head being adjustable with respect to the shaft
• CPC Class Codes: A61B 2090/0801 Prevention of accidental cutting or pricking
• CPC Class Codes: A61B 2090/0811 for the position of a particular part of an instrument with respect to the rest of the instrument, e.g. position of the anvil of a stapling instrument
• CPC Class Codes: A61B 2090/0814 Preventing re-use
• CPC Class Codes: A61B 90/08 Accessories or related features not otherwise provided for

Abstract

A cartridge assembly is disclosed. The cartridge assembly includes a channel and a removable assembly in releasable engagement with the channel. The removable assembly includes a cartridge body and a support plate. The cartridge body includes an engagement structure disposed adjacent a proximal end thereof. The support plate is configured to mechanically engage the cartridge body and includes an engagement structure disposed adjacent a proximal end thereof. The engagement structure of the cartridge body is configured for longitudinal alignment with the engagement structure of the support plate. The engagement structures of the cartridge body and the engagement structure of the support plate are configured to mechanically engage the engagement structure of the channel when the removable assembly is engaged with the channel.

Claims

1. An end effector for use with a surgical instrument comprising:

a first jaw including a central slot and defining a central longitudinal axis extending between a proximal portion and a distal portion thereof;

a second jaw, at least one of the first or second jaws movable relative to the other of the first or second jaws;

an actuation sled disposed at least partially within the first jaw, the actuation sled including a base, cam wedges extending from the base, and a tail portion, the cam wedges configured to engage pushers in response to movement of the actuation sled from a proximal position to a distal position, the tail portion extending proximally beyond proximal surfaces of the cam wedges, the tail portion laterally aligned with the central slot and including a lateral width that is approximately the same as a lateral width of the central slot; and

a latch movably coupled to the first jaw, the latch configured to engage the tail portion of the actuation sled when the actuation sled is in the proximal position.

2. The end effector according to claim 1, wherein the latch is movable from a first position where the latch is offset from the central longitudinal axis, to a second position where a portion of the latch is aligned with the central longitudinal axis.

3. The end effector according to claim 2, wherein the latch is configured to engage the tail portion of the actuation sled when the latch is in the first position.

4. The end effector according to claim 3, wherein the latch is configured to obstruct longitudinal translation of a drive member of the surgical instrument when the latch is in the second position.

5. The end effector according to claim 2, further including a spring configured to bias the latch towards the second position.

6. The end effector according to claim 1, wherein the latch is configured to engage the tail portion of the actuation sled when the actuation sled is in a proximal-most position.

7. The end effector according to claim 1, wherein the latch is spaced apart from the tail portion when the actuation sled is in the distal position.

8. The end effector according to claim 1, wherein the latch is spaced apart from the actuation sled when the actuation sled is in the distal position.

9. The end effector according to claim 1, wherein the latch is configured to contact a lateral side of the tail portion when the actuation sled is in the proximal position.

10. The end effector according to claim 1, wherein the tail portion is aligned with the central longitudinal axis.

11. The end effector according to claim 1, wherein the tail portion is configured for selective and direct contact with a clamping member of the surgical instrument.

12. An end effector for use with a surgical instrument comprising:

a first jaw including a tissue-contacting surface and defining a central longitudinal axis extending between a proximal portion and a distal portion thereof;

a second jaw, at least one of the first or second jaws movable relative to the other of the first or second jaws;

an actuation sled disposed at least partially within the first jaw, the actuation sled including a base, cam wedges extending from the base, and a tail portion, the cam wedges configured to engage pushers in response to movement of the actuation sled from a proximal position to a distal position, the tail portion extending proximally beyond proximal surfaces of the cam wedges; and

a latch movably coupled to the first jaw and configured to engage the tail portion of the actuation sled when the actuation sled is in the proximal position, the latch movable relative to the actuation sled in a direction that is parallel to the tissue-contacting surface of the first jaw.

13. The end effector according to claim 12, wherein the latch is movable from a first position where the latch is offset from the central longitudinal axis, to a second position where a portion of the latch is aligned with the central longitudinal axis.

14. The end effector according to claim 13, wherein the latch is configured to engage the tail portion of the actuation sled when the latch is in the first position.

15. The end effector according to claim 14, wherein the latch is configured to obstruct longitudinal translation of a drive member of the surgical instrument when the latch is in the second position.