Surgical fastener

• US 10,383,623 B2
• Filed: 02/14/2017
• Issued: 08/20/2019
• Est. Priority Date: 11/08/2013
• Status: Active Grant

• Current Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Original Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Inventors: Gupta, Saurav V., Ranucci, Kevin J.
• Primary Examiner(s): Ulsh, George J
• Application Number:
  US15/432,701
• Publication Number:
  US 20170156724A1
• Time in Patent Office: 917 Days
• Field of Search: 606139, 606151, 606115, 606221, 606219
• 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 17/064 Surgical staples, i.e. penetrating the tissue
• CPC Class Codes: A61B 17/0682 for applying U-shaped staples or clamps, e.g. without a forming anvil
• CPC Class Codes: A61B 17/08 Wound clamps or clips, i.e. not or only partly penetrating the tissue suture bridges A61B17/0466; Devices for bringing together the edges of a wound
• CPC Class Codes: A61B 17/083 Clips, e.g. resilient
• CPC Class Codes: A61B 17/10 for applying or removing wound clamps, e.g. containing only one clamp or staple A61B17/076 takes precedence; containing multiple wound clamps A61B17/068; Wound clamp magazines containers, packaging elements or packages specially adapted for particular articles or with special means for dispensing contents B65D83/00, B65D85/00

Abstract

Various embodiments of a non-deforming surgical fastener are discussed. In one embodiment, the fastener includes two legs and a backspan extending between the two legs. The fastener also includes a backspan thickness that is adapted to reduce the pressure and/or increase the holding strength applied to underlying materials. The non-deforming fastener is constructed and arranged to retain substantially the same shape before, during and after deployment into the target implantation site.

Claims

1. A method comprising:

deploying a non-deforming fastener into a tissue out of an elongated shaft of a fastener deployment device, the non-deforming fastener having a first leg, a second leg, and a backspan extending from the first leg to the second leg, the first and second legs extending transverse to the backspan, the backspan including a central pad with a thickness greater than a thickness of the backspan extending between the central pad and at least one of the first leg and the second leg, wherein the central pad has a width extending in a direction between the first and second legs, and the thickness of the central pad is measured in a direction transverse to the width of the central pad and to a direction in which the first and second legs extend; and

maintaining the first and second legs in a straight configuration transverse to the backspan while deploying the non-deforming fastener into the tissue from the elongated shaft.

2. The method of claim 1, wherein deploying the non-deforming fastener includes deploying the non-deforming fastener having an area of the central pad less than or equal to 10 mm² and greater than or equal to 0.1 mm².

3. The method of claim 1, further comprising anchoring the non-deforming fastener into the tissue via at least one anchoring feature of the non-deforming fastener.

4. The method of claim 3, wherein the at least one anchoring feature comprises a first barb that points in a first direction that is perpendicular to the direction of a longest dimension of the backspan.

5. The method of claim 4, wherein the at least one anchoring feature comprises a second barb that points in a second direction that is perpendicular to the direction of a longest dimension of the backspan and opposite the direction of the first barb.

6. The method of claim 1, wherein the non-deforming fastener has at least one through-hole in the central pad of the backspan.

7. The method of claim 6, further comprising guiding and stabilizing the non-deforming fastener with a rod that passes through the through-hole of the non-deforming fastener as the non-deforming fastener is moved distally.

8. The method of claim 1, further comprising positioning at least a portion of a leg of a second fastener in a recess in a top surface of the backspan.

9. The method of claim 1, wherein a width of the backspan is between or equal to 4 mm and 4.9 mm.

10. The method of claim 1, further comprising applying a pressure to underlying tissue during deployment via an area of the backspan and central pad when a deployment force is applied to the fastener, wherein the pressure is greater than or equal to 27.5 kPa and less than or equal to 275 kPa.

11. The method of claim 1, further comprising applying a deployment force to the non-deforming fastener to deploy the non-deforming fastener.

12. The method of claim 11, wherein the backspan has an area less than or equal to 10 mm² and greater than or equal to 0.25 mm².

13. The method of claim 12, wherein the deployment force is greater than or equal to 4.4N and less than or equal to 44N.

14. The method of claim 1, wherein the backspan and central pad are monolithically formed.

15. The method of claim 1, and wherein the central pad protrudes downward past a bottom surface of the backspan.

16. The method of claim 1, wherein the non-deforming fastener includes first and second outer corners arranged so that the first leg meets the backspan at the first outer corner and the second leg meets the backspan at the second outer corner.

17. The method of claim 1, wherein the thickness of the backspan at a location where the backspan extends out from the central pad towards the first leg and/or the second leg is less than the thickness of the central pad.

18. The method of claim 1, further comprising guiding and stabilizing the non-deforming fastener with a rod that passes through a through hole formed in the central pad as the non-deforming fastener is deployed into the tissue from the elongated shaft.

19. A method comprising:

deploying a non-deforming fastener into a tissue out of an elongated shaft of a fastener deployment device, the non-deforming fastener having a first leg, a second leg, and a backspan extending from the first leg to the second leg, the first and second legs extending transverse to the backspan, the backspan including a central pad protruding downward past a bottom surface of the backspan; and

maintaining the first and second legs in a straight configuration transverse to the backspan while deploying the non-deforming fastener into the tissue from the elongated shaft.

20. The method of claim 19, wherein the central pad has a thickness greater than a thickness of the backspan extending between the central pad and at least one of the first leg and the second leg, and wherein the central pad has a width extending in a direction between the first and second legs, and the thickness of the central pad is measured in a direction transverse to the width of the central pad and to a direction in which the first and second legs extend.

21. The method of claim 20, wherein the thickness of the backspan at a location where the backspan extends out from the central pad towards the first leg and/or the second leg is less than the thickness of the central pad.

22. The method of claim 19, further comprising guiding and stabilizing the non-deforming fastener with a rod that passes through a through hole formed in the central pad as the non-deforming fastener is deployed into the tissue from the elongated shaft.

23. A method comprising:

deploying a non-deforming fastener into a tissue out of an elongated shaft of a fastener deployment device, the non-deforming fastener having a first leg, a second leg, and a backspan extending from the first leg to the second leg, the first and second legs extending transverse to the backspan, the backspan including a central pad disposed between the first and second legs such that a first portion of the backspan extends between the central pad and the first leg and a second portion of the backspan extends between the central pad and the second leg;

guiding and stabilizing the non-deforming fastener with a rod that passes through a through hole formed in the central pad as the non-deforming fastener is deployed into the tissue from the elongated shaft; and

maintaining the first and second legs in a straight configuration transverse to the backspan while deploying the non-deforming fastener into the tissue from the elongated shaft.

24. The method of claim 23, wherein the central pad has a thickness greater than a thickness of the backspan extending between the central pad and at least one of the first leg and the second leg, and wherein the central pad has a width extending in a direction between the first and second legs, and the thickness of the central pad is measured in a direction transverse to the width of the central pad and to a direction in which the first and second legs extend.

25. The method of claim 24, wherein the thickness of the backspan at a location where the backspan extends out from the central pad towards the first leg and/or the second leg is less than the thickness of the central pad.