Bone implant with means for multi directional force and means of insertion

Patent metadata

Field	Value
Publication number	US-11998191-B2
Application number	US-202217700338-A
Country	US
Kind code	B2
Filing date	Mar 21, 2022
Priority date	Jul 10, 2014
Publication date	Jun 4, 2024
Grant date	Jun 4, 2024

Abstract

An assembly used in osteosynthesis comprising a delivery instrument in combination with an implant wherein the delivery instrument releasably holds the implant in a first configuration prior to attachment of the implant to bone. The delivery instrument allows the implant to be affixed to bone before the implant is released from the instrument. And the instrument may comprise guide means for drills, depth gauges, screws, pins, pegs, blades and or drivers which are used or implanted when the implant is releasably attached to the instrument. After the implant is affixed to bone and released from the delivery instrument, the implant assumes at least a second configuration which provides compression and or distraction and or control of spatial orientation.

First claim

What is claimed is:

1. A tissue fixation system comprising:
an implant, wherein the implant is movable between a first configuration and a second configuration; and
an inserter having first and second arms connectable to the implant, the inserter including:
a body having a proximal end and a distal end, and a length from the proximal end to the distal end, the body defining a width along a first direction, and the body including first and second outermost surfaces that extend from the proximal end to the distal end along the length, wherein the first and second outermost surfaces are opposite each other along a second direction so as to define a thickness of the body, the second direction is perpendicular to the first direction, and the width is less than the length and greater than the thickness;
a rod that is elongate along a central axis that is perpendicular to each of the first direction and the second direction, wherein the rod is threadedly mated with the body, and the first and second arms are spaced from each other along the first direction,
open void space that extends entirely through the body from the first outermost surface to the second outermost surface along the second direction, wherein the void space defines a total length along the central axis that is greater than half the length of the body;
a knob that is rotatably coupled to the rod such that rotation of the knob relative to the body in a direction of rotation about the central axis causes the implant to move to the first configuration when the inserter is connected to the implant,

wherein the implant is configured to be fully seatable in a final position against a tissue when the implant is in the first configuration;
wherein the inserter is configured to disconnect from the implant when the implant is fully seated in the final position, such that the implant moves from the first configuration to the second configuration, whereby the implant is configured to apply a compressive force to the tissue when the implant is in the second configuration.

2. The tissue fixation system of claim 1 , wherein the open void space defines an internal window of the body, and the knob is disposed in the internal window.

3. The tissue fixation system of claim 1 , wherein the body defines a width along a width direction that is perpendicular to the central axis and a thickness along a thickness direction that is perpendicular to each of the width direction and the central axis, the width is greater than the thickness, and the open void space extends through the body along the thickness direction.

4. The tissue fixation system of claim 3 , wherein the open void space is defined by first and second windows that have respective widths along the width direction, and the width of the first window is more than double the width of the second window.

5. The tissue fixation system of claim 4 , wherein the rod extends in a distal direction toward the implant, and the second window is distal of the first window.

6. The tissue fixation system of claim 3 , wherein the implant comprises a bridge, first and second bone engaging members that are opposite each other along the width direction when the inserter is coupled to the implant, and first and second tabs that extend out from the bridge and outward with respect to the first and second bone engaging members, respectively.

7. The tissue fixation system of claim 6 , wherein the first and second arms are pivotally attached to the body and configured to engage lower surfaces of the first and second tabs, respectively.

8. The tissue fixation system of claim 7 , wherein the bridge defines an upper surface and a lower surface opposite the upper surface, and the lower surface of the bridge is lower than the lower surfaces of the tabs.

9. The tissue fixation system of claim 6 , wherein the bone engaging members are spaced closer together when the implant is in the second configuration compared to when the implant is in the first configuration.

10. The tissue fixation system of claim 1 , wherein the body comprises a distal slot that receives the implant while the implant is in the first configuration.

11. The tissue fixation system of claim 1 , wherein the knob translates along the central axis as the knob is rotated.

12. A tissue fixation system comprising:
an implant, wherein the implant is movable between a first configuration and a second configuration; and
an inserter connectable to the implant, the inserter comprising a body, and first and second arms coupled to the body and pivotable relative to the body between an open position and a closed position, wherein the first and second arms are spring-biased toward the closed position;
wherein when the first and second arms are in the open position, the arms are configured to receive the implant, and moving the first and second arms to the closed position causes the arms to connect to the received implant, such that the inserter is actuatable to move the implant from the first configuration to the second configuration, and the implant is configured to be fully seatable in a final position against a tissue when the implant is in the first configuration,
wherein the first and second arms are configured to move from the closed position to the open position, which causes the first and second arms to disconnect from the implant when the implant is in the final position, such that the implant moves from the first configuration to the second configuration, whereby the implant is configured to apply a compressive force to the tissue when the implant is in the second configuration, and
wherein the inserter further comprises an interlock component that is positionable between the first and second arms so as to prevent the arms from moving from the open configuration to the closed configuration.

13. The tissue fixation system of claim 12 , wherein each of the first and second arms define spring members that bear against the body.

14. The tissue fixation system of claim 12 , wherein the implant comprises a bridge, first and second bone engaging members, and first and second tabs that extend laterally out from the bridge and laterally outward with respect to the first and second bone engaging members, respectively.

15. The tissue fixation system of claim 14 , wherein the first and second arms define first and second hooks that are configured to engage lower surfaces of the first and second tabs, respectively.

16. The tissue fixation system of claim 15 , wherein the bridge defines an upper surface and a lower surface opposite the upper surface, and the lower surface of the bridge is lower than the lower surfaces of the tabs.

17. The tissue fixation system of claim 12 , wherein the inserter comprises a rod that is threadedly mated with the body such that rotation of the rod in a direction of rotation causes the rod to drive a slider against the implant.

18. The tissue fixation system of claim 17 , wherein the rod is coupled to a knob that is disposed in an internal window of the body.

Assignees

• Crossroads Extremity Systems Llc

Inventors

• Hartdegen Vernon R
• Hollis Michael Chad
• Coleman Glen
• Sayger Daniel

Classifications

• A61B17/0642 Primary

  for bones, e.g. for osteosynthesis or connecting tendon to bone · CPC title

• A61B17/0682

  for applying U-shaped staples or clamps, e.g. without a forming anvil · CPC title

• A61B17/1728

  for holes for bone plates or plate screws · CPC title

• A61B17/1775

  for the foot or ankle · CPC title

• A61B17/8004

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