DYNAMIC STABILIZATION SYSTEMS AND ASSOCIATED METHODS

• US 20190059949A1
• Filed: 08/29/2018
• Published: 02/28/2019
• Est. Priority Date: 08/30/2017
• Status: Active Grant

• Current Assignee: Zimmer Biomet Spine, Inc. (Zimvie Incorporated)
• Original Assignee: Zimmer Biomet Spine, Inc. (Zimvie Incorporated)
• Inventors: Ziemek, Terry, Mast, Randall G., Capote, Allison Christine
• Granted Patent: US 10,653,453 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 17/0206 with antagonistic arms as supports for retractor elements
• CPC Class Codes: A61B 17/7008 with parts of, or attached to, the longitudinal elements, bearing against an outside of the screw or hook heads, e.g. nuts on threaded rods A61B17/7007 takes precedence
• CPC Class Codes: A61B 17/7022 Tethers, i.e. longitudinal elements capable of transmitting tension only, e.g. straps, sutures or cables A61B17/702 takes precedence
• CPC Class Codes: A61B 17/7031 made wholly or partly of flexible material
• CPC Class Codes: A61B 17/7044 also having plates, staples or washers bearing on the vertebrae
• CPC Class Codes: A61B 17/7074 Tools specially adapted for spinal fixation operations other than for bone removal or filler handling A61B17/7062, A61B17/808, A61B17/8858 take precedence; for spinal image producing devices A61B90/36, A61B34/20; markers A61B90/39
• CPC Class Codes: A61B 17/7076 for driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation
• CPC Class Codes: A61B 17/7077 for moving bone anchors attached to vertebrae, thereby displacing the vertebrae
• CPC Class Codes: A61B 17/708 with tubular extensions coaxially mounted on the bone anchors
• CPC Class Codes: A61B 17/7083 Tools for guidance or insertion of tethers, rod-to-anchor connectors, rod-to-rod connectors, or longitudinal elements
• CPC Class Codes: A61B 17/7085 for insertion of a longitudinal element down one or more hollow screw or hook extensions, i.e. at least a part of the element within an extension has a component of movement parallel to the extension's axis
• CPC Class Codes: A61B 17/7091 for applying, tightening or removing longitudinal element-to-bone anchor locking elements, e.g. caps, set screws, nuts or wedges
• CPC Class Codes: A61B 17/808 Instruments for holding or positioning bone plates, or for adjusting screw-to-plate locking mechanisms
• CPC Class Codes: A61B 17/809 with bone-penetrating elements, e.g. blades or prongs bone staples A61B17/0642; intramedullary nails with a plate at an end A61B17/7233
• CPC Class Codes: A61B 2017/0648 threaded, e.g. tacks with a screw thread
• CPC Class Codes: A61F 2/44 for the spine, e.g. vertebrae, spinal discs

Abstract

Implementations described herein include a system that may include a deliver device, an annular anchor and an implant. The delivery device may include a distal end, a proximal and a lumen extending from the distal end to the proximal end. The annular anchor may be removably coupleable to the distal end of the delivery device. The annular anchor may be implantable at a target site in a patient via manipulation of the delivery device. The delivery device may be extendable outside the patient when the anchor is implanted at the target site. The implant may be deliverable through the delivery device to the target delivery site and implantable through the annular anchor. The delivery device may be coupled to the annular anchor to control a trajectory of the implant to the target site.

Claims

1. A system, comprising:

a delivery device comprising a distal end, a proximal end, and a lumen extending from the distal end to the proximal end;

an annular anchor removably coupleable to the distal end of the delivery device, the anchor implantable at a target site in a patient via manipulation of the delivery device, the delivery device extendable outside the patient when the anchor is implanted at the target site; and

an implant deliverable through the delivery device to the target site and implantable through the annular anchor, wherein the delivery device coupled to the annular anchor controls a trajectory of delivery of the implant into the target site

2. The system of claim 1, wherein the delivery device is removable from the annular anchor subsequent to implantation of the implant.

3. The system of claim 1, wherein:

the annular anchor includes a groove in an outer diameter of the annular anchor;

the delivery device includes a collet configured to engage the groove and thereby removably attach the annular anchor to the delivery device;

the collet is disposed on inward-facing surfaces of a plurality of fingers that are positioned at the distal end of the delivery device;

the fingers are biased to flex radially outward;

the delivery device includes an outer sleeve that is advanceable distally over the fingers to force the fingers radially inward and engage the collet into the groove; and

the outer sleeve is retractable proximally from the fingers to allow the fingers to flex radially outward and disengage the collet from the groove.

4. The system of claim 1, wherein the annular anchor comprises threading disposed at a proximal end thereof, and wherein the distal end of the delivery device comprises complementary threading for removably coupling to the threading of the annular anchor.

5. The system of claim 1, wherein at least a portion of the circumference of the annular anchor comprises a chamfered lip extending inwardly from a proximal to a distal end of an annular portion of the annular anchor.

6. The system of claim 5, wherein the delivery device comprises a plurality of biasable arms for removably coupling the delivery device to the chamfered lip of the annular anchor.

7. The system of claim 1, wherein the annular anchor comprises a staple.

8. The system of claim 1, wherein the implant comprises a fastener.

9. The system of claim 8, wherein the fastener comprises a screw or pedicle screw assembly.

10. The system of claim 8, wherein the fastener comprises a head including an upwardly extending pair of arms defining a receiving channel.

11. The system of claim 10, wherein the system further comprises a set screw threadedly receivable in the receiving channel, the set screw being positioned within the receiving channel to secure a flexible member therein upon advancement of the set screw within the receiving channel.

12. The system of claim 1, further comprising a radiolucent handle configured to removably engage a proximal portion of the delivery device.

13. A method, comprising:

removably coupling a delivery device to an anchor;

inserting the anchor into a target delivery site on a patient, the anchor positioned to control location and trajectory of an implant;

delivering the implant through the delivery device;

securing the implant to underlying tissue; and

decoupling the delivery device from the annular anchor and removing the delivery device over the implant.

14. The method of claim 13, wherein, subsequent to removably coupling the delivery device to the anchor, the delivery device is used to implant the anchor into underlying tissue.

15. The method of claim 14, wherein the anchor is an annular anchor and inserting the anchor into the target delivery site comprises inserting the implant through the annular anchor.

16. The method of claim 15, wherein the annular anchor comprises a staple and inserting the anchor into the target delivery site comprises inserting a staple into the target delivery site.

17. The method of claim 13, wherein securing the implant comprises securing a fastener to underlying tissue.

18. The method of claim 17, wherein the fastener comprises a head including an upwardly extending pair of arms defining a receiving channel and further comprising inserting an elongate member into the receiving channel.

19. The method of claim 18, further comprising threadedly securing a set screw in the receiving channel, wherein threadedly securing the set screw further comprises advancing the set screw in the receiving channel to secure the elongate member therein.

20. The method of claim 13, wherein the anchor is repositionable prior to delivering the implant through the delivery device.