Orthopedic fixation system

Patent metadata

Field	Value
Publication number	US-12539151-B2
Application number	US-202418776880-A
Country	US
Kind code	B2
Filing date	Jul 18, 2024
Priority date	Jul 18, 2024
Publication date	Feb 3, 2026
Grant date	Feb 3, 2026

Abstract

An orthopedic fixation system includes an implant transitionable between a natural shape and an insertion shape and an implant retainer. The implant includes a plate segment, a blade segment extending from the plate segment, a transition section within the blade segment, and a retainer receiver traversing the transition section. The transition section deforms to move the implant between the natural shape and the insertion shape. The implant retainer, upon transition of the implant from the natural shape to the insertion shape, engages the implant at the retainer receiver. The implant retainer upon engagement with the implant spans the transition section such that the implant retainer constrains the implant and holds the implant in the insertion shape thereby preventing a transition of the implant from the insertion shape to the natural shape.

First claim

The invention claimed is:

1 . An orthopedic fixation system, comprising:
an implant transitionable between a natural shape and an insertion shape whereby a transition of the implant from the natural shape to the insertion shape stores deliverable energy and a transition of the implant from the insertion shape to the natural shape delivers stored energy, the implant, comprising:
a plate segment configured for placement adjacent a bone,
a blade segment extending from the plate segment in a configuration whereby the blade segment inserts into the bone upon placement of the plate segment adjacent the bone,
a transition section located within the blade segment at a junction of the plate segment and the blade segment, whereby the transition section deforms to move the implant between the natural shape and the insertion shape, and
a retainer receiver traversing the transition section, the retainer receiver, comprising:
a first aperture extending through the plate segment whereby the first aperture is located within the plate segment adjacent the junction of the plate segment and blade segment, and
a second aperture extending through the blade segment whereby the second aperture is located within the blade segment adjacent the junction of the plate segment and blade segment; and

an implant retainer, upon transition of the implant from the natural shape to the insertion shape, being configured to engage the implant at the first aperture and the second aperture whereby the implant retainer spans the transition section such that the implant retainer constrains the implant and holds the implant in the insertion shape thereby preventing a transition of the implant from the insertion shape to the natural shape.

2 . The orthopedic fixation system of claim 1 , the implant retainer, comprising:
a first retention block including a first fastener whereby the first retention block at the first fastener engages the implant at the first aperture; a second retention block including a second fastener whereby the second retention block at the second fastener engages the implant at the second aperture; and a fastener configured to connect the first retention block with the second retention block whereby the connected first and second retention blocks span the transition section such that the connected first and second retention blocks constrain the implant and hold the implant in the insertion shape thereby preventing a transition of the implant from the insertion shape to the natural shape.

3 . The orthopedic fixation system of claim 2 , wherein:
the first retention block includes a first bore extending therethrough along a pathway from a rear of the first retention block to a first block interface of the first retention block; the second retention block includes a second bore extending therethrough along a pathway from a block interface of the second retention block toward a rear of the second retention block; the engagements of the first retention block and the second retention block with the implant places the first block interface next to the second block interface with the first bore in alignment with the second bore; and the fastener inserts into the first bore and the second bore to connect the first retention block with the second retention block whereby the connected first and second retention blocks span the transition section such that the connected first and second retention blocks constrain the implant and hold the implant in the insertion shape thereby preventing a transition of the implant from the insertion shape to the natural shape.

4 . The orthopedic fixation system of claim 2 , the retainer receiver, comprising:
a first catch protruding into the first aperture; and a second catch protruding into the second aperture.

5 . The orthopedic fixation system of claim 4 , wherein:
the first fastener includes a first post extending therefrom and a first detent extending from the first post; the second fastener includes a second post extending therefrom and a second detent extending from the second post; the engagement of the first retention block with the implant includes insertion of the first fastener into the first aperture whereby the first detent interlocks with the first catch; the engagement of the second retention block with the implant includes insertion of the second fastener into the second aperture whereby the second detent interlocks with the second catch; and the fastener connects the first retention block with the second retention block with the first detent interlocked with the first catch and the second detent interlocked with the second catch whereby the connected first and second retention blocks span the transition section such that the connected first and second retention blocks constrain the implant and hold the implant in the insertion shape thereby preventing a transition of the implant from the insertion shape to the natural shape.

6 . An orthopedic fixation system, comprising:
an implant transitionable between a natural shape and an insertion shape whereby a transition of the implant from the natural shape to the insertion shape stores deliverable energy and a transition of the implant from the insertion shape to the natural shape delivers stored energy, the implant, comprising:
a plate segment,
a blade segment extending from the plate segment,
a transition section located within the blade segment at a junction of the plate segment and the blade segment, whereby the transition section deforms to move the implant between the natural shape and the insertion shape, and
a retainer receiver, comprising a bore traversing the transition section; and
an implant retainer, comprising a set screw wherein, upon transition of the implant from the natural shape to the insertion shape, the set screw inserts into the bore whereby the set screw spans the transition section such that the set screw constrains the implant and holds the implant in the insertion shape thereby preventing a transition of the implant from the insertion shape to the natural shape.

7 . The orthopedic fixation system of claim 6 , wherein the bore begins in an entrance located within the plate segment at the junction of the plate segment and the blade segment, traverses the junction, and extends into the blade segment such that the bore traverses the transition section.

8 . The orthopedic fixation system of claim 7 , the implant retainer, comprising the set screw wherein, upon transition of the implant from the natural shape to the insertion shape, the set screw inserts into the bore beginning at the entrance thereof whereby the set screw extends into the blade segment while spanning the transition section such that the set screw constrains the implant and holds the implant in the insertion shape thereby preventing a transition of the implant from the insertion shape to the natural shape.

9 . An orthopedic fixation system, comprising:
an implant transitionable between a natural shape and an insertion shape whereby a transition of the implant from the natural shape to the insertion shape stores deliverable energy and a transition of the implant from the insertion shape to the natural shape delivers stored energy, the implant, comprising:
a plate segment,
a blade segment extending from the plate segment, the blade segment including a curve,
a transition section located within the blade segment at the curve, whereby the transition section deforms to move the implant between the natural shape and the insertion shape, and
a retainer receiver, comprising a bore traversing the transition section; and
an implant retainer, comprising a set screw wherein, upon transition of the implant from the natural shape to the inserti

Assignees

• Depuy Synthes Products Inc

Inventors

• Kobayashi Kenneth
• Probst Troy
• Lui Eric

Classifications

• A61B2017/00867

  shape memory effect · CPC title

• A61B17/809

  with bone-penetrating elements, e.g. blades or prongs (bone staples A61B17/0642; intramedullary nails with a plate at an end A61B17/7233) · CPC title

• A61B17/808

  Instruments for holding or positioning bone plates, or for adjusting screw-to-plate locking mechanisms · CPC title

• A61B17/8004 Primary

  with means for distracting or compressing the bone or bones · CPC title

• A61B17/8061 Primary

  specially adapted for particular bones (A61B17/70 and A61B17/74 take precedence) · CPC title