Anvil assembly and anvil assembly delivery system

• US 10,085,756 B2
• Filed: 07/24/2015
• Issued: 10/02/2018
• Est. Priority Date: 07/24/2015
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Williams, Justin
• Primary Examiner(s): Long, Robert
• Application Number:
  US14/808,467
• Publication Number:
  US 20170020527A1
• Time in Patent Office: 1,166 Days
• Field of Search: 2271751-1821
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• 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 17/1114 of the digestive tract, e.g. bowels or oesophagus
• CPC Class Codes: A61B 17/1155 Circular staplers comprising a plurality of staples
• CPC Class Codes: A61B 2017/00278 Transorgan operations, e.g. transgastric
• CPC Class Codes: A61B 2017/00292 mounted on or guided by flexible, e.g. catheter-like, means
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/07257 characterised by its anvil
• CPC Class Codes: A61B 2090/037 with a frangible part, e.g. by reduced diameter

Abstract

An anvil assembly suitable for trans-oral delivery includes an anvil head configured to receive a guide suture that is separable from the anvil assembly during a stapling procedure. An anvil delivery assembly includes the anvil assembly and a suture guide assembly secured to the anvil assembly.

Claims

1. An anvil assembly comprising:

an anvil center rod;

a head assembly pivotally secured to the anvil center rod, the head assembly including a housing and a latch member mounted within the housing, the latch member being movable between a first position and a second position; and

a first suture received about the latch member, wherein in the first position of the latch member the latch member is positioned to prevent release of the first suture from the head assembly and in the second position of the latch member the latch member is positioned to release the first suture from the head assembly.

2. The anvil assembly of claim 1, wherein the head assembly includes a backup member supported within the housing, the backup member being movable within the housing from a proximal position to a distal position.

3. The anvil assembly of claim 2, wherein the backup member includes a retaining post configured to engage the latch member when the backup member is in the proximal position.

4. The anvil assembly of claim 3, wherein the retaining post defines a cutout, the cutout being aligned with the latch member when the backup member is in the distal position.

5. The anvil assembly of claim 1, wherein the latch member includes a curved body portion for receiving the first suture thereabout.

6. The anvil assembly of claim 1, wherein the housing defines an arcuate cutout, the latch member enclosing the cutout when the latch member is in the first position.

7. The anvil assembly of claim 6, wherein the first suture is retained within the cutout when the latch member is in the first position by the latch member.

8. The anvil assembly of claim 2, wherein the head assembly includes a retainer member for maintaining the backup member in the proximal position.

9. The anvil assembly of claim 8, wherein the retainer member includes a body and a frangible ring separable from the body to permit movement of the backup member from the proximal position to the distal position.

13. The anvil assembly of claim 3, wherein the retaining post defines a cutout, the cutout being aligned with the latch member when the backup member is in the distal position.

14. The anvil assembly of claim 2, wherein the latch member includes a curved body portion for receiving the first suture thereabout.

15. The anvil assembly of claim 2, wherein the housing defines an arcuate cutout, the latch member enclosing the cutout when the latch member is in the first position.

16. The anvil assembly of claim 15, wherein the first suture is retained within the cutout when the latch member is in the first position by the latch member.

10. An anvil assembly comprising:

an anvil center rod;

a head assembly pivotally secured to the anvil center rod, the head assembly including a housing and a backup member supported within the housing, the backup member being movable between a proximal position and a distal position; and

a first suture extending from the head assembly, wherein in the proximal position of the backup member the backup member is positioned to prevent release of the first suture from the head assembly and in the distal position of the backup member the backup member is positioned to release the first suture from the head assembly.

11. The anvil assembly of claim 10, wherein the head assembly includes a latch member mounted within the housing, the latch member being movable within the housing from a first position to a second position.

12. The anvil assembly of claim 11, wherein the backup member includes a retaining post configured to engage the latch member when the backup member is in the proximal position.

17. The anvil assembly of claim 10, wherein the head assembly includes a retainer member for maintaining the backup member in the proximal position.

18. The anvil assembly of claim 17, wherein the retainer member includes a body and a frangible ring separable from the body to permit movement of the backup member from the proximal position to the distal position.