Bone anchor delivery systems and methods

• US 10,470,804 B2
• Filed: 03/31/2017
• Issued: 11/12/2019
• Est. Priority Date: 12/28/2005
• Status: Active Grant

• Current Assignee: Intrinsic Therapeutics, Inc.
• Original Assignee: Intrinsic Therapeutics, Inc.
• Inventors: Lambrecht, Gregory H., Velagic, Almir, Moore, Robert Kevin, Tarapata, Christopher J., Einhorn, Jacob, Kavanaugh, Sean M.
• Primary Examiner(s): Beccia, Christopher J
• Application Number:
  US15/475,619
• Publication Number:
  US 20170333089A1
• Time in Patent Office: 956 Days
• CPC Class Codes: A61B 17/0401 Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors A61B17/0642 takes precedence; fixation devices for tendons or ligaments A61F2/0811
• CPC Class Codes: A61B 17/0642 for bones, e.g. for osteosynthesis or connecting tendon to bone
• CPC Class Codes: A61B 17/0682 for applying U-shaped staples or clamps, e.g. without a forming anvil
• CPC Class Codes: A61B 17/68 Internal fixation devices , including fasteners and spinal fixators, even if a part thereof projects from the skin bone staples A61B17/0642
• CPC Class Codes: A61B 17/7056 Hooks with specially-designed bone-contacting part
• CPC Class Codes: A61B 17/8085 with pliable or malleable elements or having a mesh-like structure, e.g. small strips A61B17/8071, A61B17/8076 take precedence
• CPC Class Codes: A61B 2017/0409 Instruments for applying suture anchors for applying suture clamps, clips or locks A61B2017/0488
• CPC Class Codes: A61B 2017/0414 having a suture-receiving opening, e.g. lateral opening lateral eyelet for attaching suture to needle A61B2017/06019
• CPC Class Codes: A61B 2017/0647 having one single leg, e.g. tacks
• CPC Class Codes: A61B 2017/0649 Coils or spirals
• CPC Class Codes: A61F 2/442 Intervertebral or spinal discs, e.g. resilient non-disc-shaped intervertebral inflatable pockets A61F2/441; non-disc-shaped intervertebral fusion implants A61F2/4455
• CPC Class Codes: A61F 2002/4435 Support means or repair of the natural disc wall, i.e. annulus, e.g. using plates, membranes or meshes

Abstract

Embodiments of the invention relate generally to tissue anchors and methods of delivering same to the intervertebral disc or other sites within the body. In some embodiments, the anchors provide pull-out resistance, stability and/or maximize contact with tissue involving a minimum amount of penetration. In some embodiments, delivery methods are minimally invasive and include linear, lateral, and off-angle implantation or driving of anchors along, against or within tissue surfaces.

Claims

1. An anchor delivery system comprising:

a bone anchor configured for implantation into an outer surface of a vertebral body that is perpendicular to an endplate surface of the vertebral body; and

a delivery tool comprising an elongate guide body and a push rod slidably mounted within said guide body,

wherein said guide body comprises a proximal end and a distal end,

wherein the guide body comprises a guide way chamber terminating in an opening at the distal end of the guide body,

wherein the distal end of the guide body comprises a flattened surface configured to be advanced along the endplate surface of the vertebral body to facilitate alignment of implantation of the bone anchor;

wherein the guide body is adapted to retain said anchor prior to implantation,

wherein the bone anchor is at least partially inserted within the distal end of the guide body prior to implantation, and

wherein said push rod is operable to contact said anchor in said guide way

chamber via linear advancement of said push rod to drive said anchor into the

outer surface of the vertebral body.

2. The system of claim 1, wherein the guide body has a length in a range of between 10 cm and 30 cm and a width in a range between 0.5 cm and 1.5 cm.

3. The system of claim 2, wherein the push rod has a length in a range of between 15 cm and 40 cm and a width in a range between 0.1 cm and 1 cm.

4. The system of claim 1, wherein the guide body comprises a cylindrical grip.

5. The system of claim 1, wherein the bone anchor is configured for countersinking within said outer surface of the vertebral body such that no portion of said bone anchor remains exterior to said outer surface.

6. The system of claim 1, wherein at least a portion of the bone anchor comprises a biologically active agent.

7. The system of claim 1, wherein the bone anchor comprises a prosthetic barrier coupled to the anchor, wherein the barrier is adapted to be positioned along the guide body prior to implantation.

8. The system of claim 1, wherein the bone anchor is pre-loaded within the delivery tool.

9. The system of claim 1, further comprising a sleeve adapted to fit over the distal end of the guide body.

10. An anchor delivery system comprising:

a bone anchor configured for implantation into an outer surface of a vertebral body that is perpendicular to an endplate surface of the vertebral body; and

a delivery tool comprising an elongate guide body and a push rod slidably mounted within said guide body,

wherein said guide body comprises a proximal end and a distal end,

wherein the distal end of the guide body comprises an alignment surface configured to be advanced along the endplate surface of the vertebral body to facilitate alignment of implantation of the bone anchor;

wherein the guide body is adapted to retain said anchor in a pre-loaded manner,

wherein the bone anchor is at least partially mounted within the distal end of the guide body prior to implantation into the outer surface of the vertebral body, and

wherein said push rod is operable to contact said anchor via linear advancement of said push rod to drive said anchor into the outer surface of the vertebral body.

11. The system of claim 10, wherein the bone anchor is configured for countersinking within said outer surface of the vertebral body such that no portion of said bone anchor remains exterior to said outer surface.

12. The system of claim 10, wherein at least a portion of the bone anchor comprises a biologically active agent.

13. The system of claim 10, wherein the bone anchor comprises a prosthetic barrier coupled to the anchor, wherein the barrier is adapted to be positioned along the guide body prior to implantation.

14. The system of claim 10, wherein the push rod comprises a proximal end having a striking surface that is adapted to be hammered and a distal end that is adapted to transmit force to the anchor.

15. The system of claim 10, further comprising a depth stop support adapted to be removably coupled to the distal end of the guide body.

16. A method of delivering an anulus augmentation device, the method comprising:

advancing an anchor delivery system adjacent a location of an intervertebral disc,

the anchor delivery system comprising a delivery tool and a bone anchor pre-loaded in the delivery tool,

wherein the delivery tool comprises an elongate guide body and a push rod slidably mounted within said guide body,

wherein the bone anchor is at least partially encompassed by the elongate guide body prior to implantation of the bone anchor

advancing a distal end of the elongate guide body until it is in contact with an outer surface of a vertebral body that is perpendicular to an endplate surface of the vertebral body;

striking a proximal end of the push rod so as to cause a distal end of the push rod to contact and drive the bone anchor out of the delivery tool and into the outer surface of the vertebral body until no portion of said bone anchor remains exterior to said outer surface.

17. The method of claim 16, further comprising aligning the bone anchor with respect to a top of a vertebral endplate and the outer surface of the vertebral body to facilitate proper implantation trajectory.

18. The method of claim 16, wherein at least a portion of the bone anchor comprises a biologically active agent.

19. The method of claim 16, wherein the bone anchor comprises a prosthetic barrier coupled to the anchor.

20. The method of claim 19, wherein the barrier is adapted to transition from a folded configuration to a deployed configuration during implantation.