Surgical fasteners for articulating surgical instruments

Patent metadata

Field	Value
Publication number	US-10932776-B2
Application number	US-201815867063-A
Country	US
Kind code	B2
Filing date	Jan 10, 2018
Priority date	Jan 10, 2018
Publication date	Mar 2, 2021
Grant date	Mar 2, 2021

Abstract

Surgical fasteners for use with articulating surgical instruments are disclosed. In one embodiment, a surgical fastener may include a head, a shaft extending distally from the head, and a through bore extending through the shaft from a proximal surface of the head to a distal end of the shaft. A fastener carrier of a surgical instrument may be slidably received in the through bore, and the through bore may be sized and shaped to have two or fewer contact points with the fastener carrier when the fastener carrier is in a fully articulated configuration. In another embodiment, a fastener may include a head, a shaft extending distally from the head and including a distal tip, a sloped surface sloping toward the distal tip, and a through bore passing through the head, shaft, and sloped surface. The sloped surface may terminate at two shoulders located on opposing sides of the through bore.

First claim

What is claimed is:

1. A surgical fastener comprising:
a head;
a shaft extending distally from the head, the shaft including a distal tip;
a sloped surface sloping toward the distal tip; and
a through bore passing through the head, the shaft, and the sloped surface, wherein the sloped surface has a proximal portion and a distal portion, wherein the sloped surface terminates at two shoulders located on opposing sides of the through bore on the distal portion of the sloped surface, wherein the distal tip extends distally away from the two shoulders of the sloped surface, wherein the distal tip is radially offset from the through bore, and wherein the shoulders are located on a planar surface adjacent the distal tip, and wherein the distal tip extends distally from the planar surface.

2. The surgical fastener of claim 1 , wherein the sloped surface is curved.

3. The surgical fastener of claim 1 , wherein the sloped surface is linear.

4. The surgical fastener of claim 1 , wherein the planar surface extends at least partially around the distal tip.

5. The surgical fastener of claim 1 , wherein the sloped surface extends from an outer surface of a barb towards the distal tip.

6. The surgical fastener of claim 1 , wherein a transverse dimension of the sloped surface at the two shoulders is greater than or equal to about 0.05 mm.

7. The surgical fastener of claim 1 , wherein a transverse dimension of the shaft is between or equal to about 0.25 mm and about 0.75 mm.

8. The surgical fastener of claim 1 , further comprising a recess formed on a proximal surface of the head, wherein the recess is constructed and arranged to receive a distal tip of an adjacent fastener in a fastener stack, and wherein a transverse dimension of the recess is less than a transverse dimension of the planar surface.

9. A surgical fastener comprising:
a head;
a shaft extending distally from the head;
a through bore extending through the shaft from a proximal surface of the head to a distal end of the shaft, wherein the through bore has a first transverse dimension at a proximal end of the through bore and a second transverse dimension at a distal end of the through bore wherein the first transverse dimension is smaller than the second transverse dimension, and wherein the through bore tapers from the distal end of the through bore to the proximal end of the through bore, wherein the shaft includes a distal tip, and wherein the distal tip is radially offset from the through bore; and
a sloped surface sloping toward the distal tip, wherein the through bore passes through the sloped surface, wherein the sloped surface terminates at two shoulders located on opposing sides of the through bore, wherein the shoulders are located on a planar surface adjacent the distal tip, and wherein the distal tip extends distally from the planar surface.

10. The surgical fastener of claim 9 , wherein the first transverse dimension is between about 0.5 mm and about 1.0 mm.

11. The surgical fastener of claim 10 , wherein the second transverse dimension is between about 0.6 mm and about 1.2 mm.

12. The surgical fastener of claim 9 , further comprising a recess formed on the proximal surface of the head.

13. The surgical fastener of claim 12 , wherein the recess is radially offset relative to the through bore and aligned with the distal tip.

14. The surgical fastener of claim 13 , wherein the recess is constructed and arranged to receive a distal tip of an adjacent fastener in a fastener stack.

15. The surgical fastener of claim 9 , wherein the through bore has a continuous taper from the distal end of the through bore to the proximal end of the through bore.

16. A surgical fastener comprising:
a head;
a shaft extending distally from the head, wherein a proximal end of the shaft has a larger transverse dimension than a distal end of the shaft;
a through bore extending through the shaft from a proximal surface of the head to the distal end of the shaft, wherein a distal end of the through bore has a larger transverse dimension than a proximal end of the through bore, wherein the shaft includes a distal tip, and wherein the distal tip is radially offset from the through bore; and
a sloped surface sloping toward the distal tip, wherein the through bore passes through the sloped surface, wherein the sloped surface terminates at two shoulders located on opposing sides of the through bore, wherein the shoulders are located on a planar surface adjacent the distal tip, and wherein the distal tip extends distally from the planar surface.

17. The surgical fastener of claim 16 , wherein the through bore has a continuous taper from the distal end of the through bore to the proximal end of the through bore.

18. The surgical fastener of claim 16 , further comprising a recess formed on a proximal surface of the head, wherein the recess is constructed and arranged to receive a distal tip of an adjacent fastener in a fastener stack, and wherein a transverse dimension of the recess is less than a transverse dimension of the planar surface.

Assignees

• Bard Inc C R

Inventors

• Cauldwell Nathan Stewart
• Felix Augustus
• Affonce Derek
• Ranucci Kevin J

Classifications

• A61B17/068 Primary

  Surgical staplers {, e.g. containing multiple staples or clamps}({staplers containing only one staple A61B17/10; magazines or containers for staples A61B17/105;} for performing anastomosis A61B17/115; {staplers in general B25C5/00}) · CPC title

• A61B2017/00367

  Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like · CPC title

• A61B2017/00327

  with actuating members moving in opposite directions · CPC title

• A61B17/846

  Nails or pins, i.e. anchors without movable parts, holding by friction only, with or without structured surface (A61B17/72, A61B17/86 take precedence) · CPC title

• A61B17/8872

  Instruments for putting said fixation devices against or away from the bone (A61B17/7074, A61B17/808 take precedence) · CPC title