Intramedullary nail fixation guides, devices, and methods of use

Patent metadata

Field	Value
Publication number	US-11179166-B2
Application number	US-201815911680-A
Country	US
Kind code	B2
Filing date	Mar 5, 2018
Priority date	Mar 15, 2013
Publication date	Nov 23, 2021
Grant date	Nov 23, 2021

Abstract

Fixation guide devices and methods for positioning and inserting an intramedullary nail are disclosed. The fixation guide devices include a frame with a first end and a second end, a compression device removably coupled to the first end of the frame, and the intramedullary nail secured to a nail attachment apparatus of the frame. An intramedullary nail including a body with a fastening end, a closed end, and at least two openings is also disclosed. A compression device includes a compression member, a knob, and a bolt secured in the knob and rotatably engaging the compression member is also disclosed. An alignment guide is disclosed and includes a base member, an alignment member, and a fixation guide. A method of inserting an intramedullary nail into two bones for fixation of the two bones is also disclosed.

First claim

What is claimed is:

1. An intramedullary nail, comprising:
a body with a first end and a second end, the body comprising:
a fastening end at the first end of the body, wherein the fastening end comprises:
a first fastening segment extending away from the first end of the body a first distance along a longitudinal axis; and
a second fastening segment extending away from the first end of the body a second distance along the longitudinal axis, wherein the first distance is greater than the second distance and wherein the first fastening segment is offset from the second fastening segment along the longitudinal axis;
an insertion opening extending from the first end into the body along the longitudinal axis of the body; and
an engagement opening extending from the first end through the body to an exterior surface, wherein a portion of the engagement opening overlaps with a portion of the insertion opening to form an oblique opening at the first end of the body that extends between the first fastening segment and the second fastening segment, wherein the oblique opening intersects and overlaps the longitudinal axis at the first end;

a closed end at the second end of the body; and
at least two openings positioned oblique to the longitudinal axis of the body between the first end and the second end of the body, wherein the at least two openings comprises:
three first openings; and
a second elongated opening, wherein the insertion opening of the fastening end engages the second elongated opening.

2. The intramedullary nail of claim 1 , wherein the at least two openings comprises four openings extending through the body on independent planes and angularly spaced apart.

3. The intramedullary nail of claim 1 , further comprising:
a plurality of fasteners, wherein two fasteners of the plurality of fasteners engage the at least two openings of the body.

4. The intramedullary nail of claim 3 , further comprising:
a cam member sized to engage the insertion opening and the second elongated opening to translate a fastener of the plurality of fasteners inserted through the second elongated opening along the second elongated opening.

5. The intramedullary nail of claim 1 , wherein the closed end is comprised of an arcuate portion and a flat portion, wherein the flat portion is a tip of the closed end.

6. The intramedullary nail of claim 1 , wherein the closed end is comprised of a straight section and a curved tip, wherein the curved tip is adjacent to the straight section, and wherein the straight section extends from the curved tip to an exterior surface of the body.

7. The intramedullary nail of claim 1 , wherein the closed end is bullet shaped.

8. The intramedullary nail of claim 1 , wherein a portion of the engagement opening extending through the body of the intramedullary nail is threaded.

9. The intramedullary nail of claim 1 , wherein the engagement opening further comprises a central axis, wherein the central axis overlaps the longitudinal axis of the body.

10. The intramedullary nail of claim 1 , wherein the fastening end is configured as a step.

11. The intramedullary nail of claim 1 , wherein at least a portion of the insertion opening is threaded.

12. The intramedullary nail of claim 1 , wherein the insertion opening further comprise a central axis.

13. The intramedullary nail of claim 12 , wherein the central axis extends parallel to the longitudinal axis of the body.

14. The intramedullary nail of claim 1 , wherein the body has a circular cross-section.

15. The intramedullary nail of claim 14 , wherein the body is configured as an elongated cylinder extending from the fastening end to the closed end.

16. The intramedullary nail of claim 1 , further comprising a locking screw, wherein the locking screw passes through the engagement opening to secure the nail to a bone.

17. The intramedullary nail of claim 16 , wherein the locking screw is comprised of a head and a shaft;
the shaft comprised of a first threaded section proximate to the head, and
a smooth section adjacent to the first threaded section, and
a second threaded section adjacent to the smooth section.

Assignees

• Paragon 28 Inc

Inventors

• Dacosta Albert
• Bono Frank
• Houghton Michael
• Sangiovanni Thomas
• Clancy James T
• Chang Thomas

Classifications

• A61B17/72

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

• A61B17/7291

  for small bones, e.g. in the foot, ankle, hand or wrist · CPC title

• A61B17/1717 Primary

  for applying intramedullary nails or pins · CPC title

• A61B17/1725

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

• A61B2017/681

  Alignment, compression, or distraction mechanisms · CPC title