Systems and methods for intramedullary nail implantation

Patent metadata

Field	Value
Publication number	US-12285178-B2
Application number	US-202217968337-A
Country	US
Kind code	B2
Filing date	Oct 18, 2022
Priority date	Sep 22, 2016
Publication date	Apr 29, 2025
Grant date	Apr 29, 2025

Abstract

Intramedullary nails, systems, and methods. The intramedullary nail may include a generally elongate body extending from a first, distal end to a second, proximal end. The distal end may include one or more openings configured to receive one or more bone anchors that extend transversely through the distal end of the intramedullary nail, and thereby configured to secure the distal end of the nail. The proximal end may also include one or more openings configured to receive one or more bone anchors that extend transversely through the proximal end of the intramedullary nail, and thereby configured to secure the proximal end of the nail.

First claim

What is claimed is:

1. An intramedullary system configured to stabilize bone, the system comprising:
an intramedullary nail having:
a body extending between a proximal end and a distal end with a portion of the body elongated along a first axis, the body having a proximal portion and a distal portion;
a first opening formed through the proximal portion of the body; and
a second opening formed through the distal portion of the body; and

an insertion tool including an aiming guide defining at least two hole openings, wherein a friction retention assembly, including a friction pad, is associated with each hole opening, and wherein a pin extends through a portion of the aiming guide and through a slot defined through the friction pad.

2. The system of claim 1 , wherein the first opening is at an oblique angle with respect to the first axis.

3. The system of claim 1 , wherein the proximal portion of the body includes at least a third opening formed therethrough and the third opening is at an oblique angle with respect to the first axis.

4. The system of claim 1 , wherein the body includes at least one slot formed through the proximal portion of the body.

5. The system of claim 1 , wherein the body includes at least a fourth opening formed through the distal portion of the body with an axis of the fourth opening extending perpendicular to an axis of the second opening; and wherein the fourth opening is formed with a two-start thread.

6. The system of claim 1 , further comprising at least two locking screws with each of the locking screws having a two-start thread.

7. The system of claim 1 , wherein the two-start thread of each of the locking screws has the same pitch as the two-start thread of the respective opening.

8. The system of claim 1 , wherein the proximal portion extends along a second axis which is at a first acute angle with respect to the first axis; and wherein the distal portion extends along a third axis which is at a second acute angle with respect to the first axis.

9. The system of claim 8 , wherein the first acute angle is larger than the second acute angle.

10. The system of claim 1 , wherein at least the first and second openings are formed with a two-start thread.

11. An intramedullary system configured to stabilize bone, the system comprising:
an intramedullary nail having:
a body extending between a proximal end and a distal end with a portion of the body elongated along a first axis, the body having a proximal portion and a distal portion;
a first opening formed through the proximal portion of the body; and
a second opening formed through the distal portion of the body; and

an insertion tool having:
an aiming guide having an arcuate body defining at least two hole openings therethrough, each of the hole openings axially aligned with a respective one of the first and second openings and configured to receive a guide sheath therethrough, wherein a friction retention assembly, including a friction pad, is associated with each hole opening, and wherein a pin extends through a portion of the aiming guide and through a slot defined through the friction pad.

12. The system of claim 11 , wherein the first opening is at an oblique angle with respect to the first axis.

13. The system of claim 11 , wherein the proximal portion of the body includes at least a third opening formed therethrough and the third opening is at an oblique angle with respect to the first axis.

14. The system of claim 11 , wherein the body includes at least one slot formed through the proximal portion of the body.

15. The system of claim 11 , wherein the body includes at least a fourth opening formed through the distal portion of the body with an axis of the fourth opening extending perpendicular to an axis of the second opening; and wherein the fourth opening is formed with a two-start thread.

16. The system of claim 11 , further comprising at least two locking screws with each of the locking screws having a two-start thread.

17. The system of claim 11 , wherein the two-start thread of each of the locking screws has the same pitch as the two-start thread of the respective opening.

18. The system of claim 11 , wherein the proximal portion extends along a second axis which is at a first acute angle with respect to the first axis; and wherein the distal portion extends along a third axis which is at a second acute angle with respect to the first axis.

19. The system of claim 18 , wherein the first acute angle is larger than the second acute angle.

20. The system of claim 11 , wherein at least the first and second openings are formed with a two-start thread.

Assignees

• Globus Medical Inc

Inventors

• Machamer David
• Jansen David R
• Hedgeland Mark
• Rossney Mark

Classifications

• A61B17/1725

  for applying transverse screws or pins through intramedullary nails or pins · CPC title

• A61B17/72

  Intramedullary devices, e.g. pins or nails · CPC title

• A61B17/7233

  with special means of locking the nail to the bone · CPC title

• A61B17/1615

  Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material · CPC title

• A61B17/1717 Primary

  for applying intramedullary nails or pins · CPC title