Devices for generating and applying compression within a body

Patent metadata

Field	Value
Publication number	US-11806008-B2
Application number	US-202217896776-A
Country	US
Kind code	B2
Filing date	Aug 26, 2022
Priority date	Mar 7, 2016
Publication date	Nov 7, 2023
Grant date	Nov 7, 2023

Abstract

This disclosure is directed to surgical fixation devices (e.g., staples, screws, etc.) which are able to bring bone fragments into close proximity with each other, generate a compressive load, and maintain that compressive load for a prolonged period of time while healing occurs. The surgical fixations devices are manufactured from a shape memory material (e.g., a material capable of exhibiting superelasticity and/or a temperature-induced shape change).

First claim

What is claimed is:

1. A surgical system comprising:
a staple mountable to a delivery device, the staple including a bridge, a first leg connected to the bridge by a first hinge region, and a second leg connected to the bridge by a second hinge region, wherein the staple is moveable between a first staple position and a second staple position; and
a delivery device including a staple mount including a channel that receives the bridge of the staple and a first arm and a second arm each pivotally connected at a pivot pin, wherein the delivery device is moveable between a first delivery device position where the staple is in the first staple position and a second delivery device position where the staple is in the second staple position, the first arm and the second arm include a first handle and a second handle, respectively, on one end of the first arm and the second arm, respectively, for actuating the delivery device, and the first arm and the second arm include a first stretching linkage and a second stretching linkage, respectively, on the other end of the first arm and the second arm, respectively, that define the staple mount including a channel that receives the bridge of the staple, wherein the staple mount includes a first stretching linkage having a first radii and including a first channel and a first pin and a second stretching linkage having a second radii and including a second channel and a second pin,
wherein the bridge of the staple is positioned in the channel of the staple mount when the staple is in the first staple position and the delivery device is in the first delivery device position,
wherein the first stretching linkage is mounted to the first arm by the first pin and the second stretching linkage is mounted to the second arm by the second pin, the first pin is slidable in the second channel of the second stretching linkage and the second pin is slidable in the first channel of the first stretching linkage, and the first stretching linkage and the second stretching linkage are distal to the channel,
wherein the first radii of the first stretching linkage and the second radii of the second stretching linkage mate with the first hinge region and the second hinge region, respectively, of the staple when the first handle and the second handle are moved inwardly to strain the bridge of the staple to move the staple from the first staple position to the second staple position, when the staple is in the first staple position, the first leg and the second leg of the staple are convergent, and when the staple is in the second staple position, the first leg and the second leg are substantially parallel to each other and substantially perpendicular to the bridge, and
wherein as the delivery devices moves from the first delivery device position and the second delivery device position, the first handle and the second handle move inwardly and the first stretching linkage and the second stretching linkage move outwardly, and
a locking feature that holds the staple in the second staple position.

2. The surgical system as recited in claim 1 wherein the delivery device includes a first outboard constraint and a second outboard constraint positioned outwardly from the first staple mount and the second staple mount, respectively, that prevents the first leg and the second leg of the staple from bending more than 90° when the staple moves from the first staple position to the second staple position, the first hinge of the staple is positioned between the first staple mount and the first outboard constraint, and the second hinge of the staple is positioned between the second staple mount and the second outboard constraint.

3. The surgical system as recited in claim 1 wherein the staple is made of a shape memory material.

4. The surgical system as recited in claim 3 wherein the staple is made of Nitinol.

5. A surgical system comprising:
a delivery device including a staple mount including a channel, the delivery device including a first arm and a second arm each pivotally connected at a pivot pin, wherein the first arm and the second arm have a first handle and a second handle, respectively, on one end of the first arm and the second arm, respectively, for actuating the delivery device, and the first arm and the second arm include a first stretching linkage and a second stretching linkage, respectively, on the other end of the first arm and the second arm for holding and straining a staple, wherein the delivery device is moveable between a first delivery device position and a second delivery device position; and
the staple mountable to the delivery device, the staple including a bridge, a first leg connected to the bridge by a first hinge region, and a second leg connected to the bridge by a second hinge region, wherein the staple is moveable between a first staple position and a second staple position, and the channel of the staple mount receives the bridge of the staple, and
wherein the first handle and the second handle are moveable toward one another to translate the staple mount apart to strain the bridge to move the staple from the first staple position in which the first leg and the second leg are convergent and the second staple position in which the first leg and the second leg are substantially parallel to each other and substantially perpendicular to the bridge,
wherein the first handle and the second handle are moved inwardly to strain the bridge of the staple to move the staple from the first staple position to the second staple position, the staple is in the first staple position when the first leg and the second leg of the staple are convergent, and the staple is in the second staple position when the first leg and the second leg are substantially parallel to each other and substantially perpendicular to the bridge.

6. The surgical system as recited in claim 5 wherein the delivery device includes a locking feature that holds the staple in the second staple position.

7. The surgical system as recited in claim 5 wherein the first stretching linkage and the second stretch linkage are distal to the channel, and a first radii of the first stretching linkage and a second radii of the second stretching linkage mate with the first hinge region and the second hinge region, respectively, of the staple when the first handle and the second handle are moved inwardly to strain the bridge in the channel of the staple mount to move the staple from the first staple position to the second staple position.

8. The surgical system as recited in claim 7 wherein the delivery device includes a first pin and a second pin, and the first stretching linkage and the second stretch linkage are mounted to the first arm and the second arm, respectively, by the first pin and the second pin, respectively.

9. The surgical system as recited in claim 8 wherein the first stretching linkage and the second stretching linkage include a first channel and a second channel, respectively, and the first pin and the second pin are mounted to the first stretching linkage and the second stretching linkage, respectively, and slide in the second channel of the second stretching linkage and the first channel of the first stretching linkage, respectively.

10. The surgical system as recited in claim 8 wherein the delivery device includes a first outboard constraint and a second outboard constraint positioned outwardly from the first staple mount and the second staple mount, respectively, that prevents the first leg and the second leg of the staple from bending more than 90° when the staple moves from the first staple position to the second staple position, the first hinge of the staple is positioned between the first staple mount and the first outboard c

Assignees

• Arthrex Inc

Inventors

• Palmer Matthew
• Fonte Matthew
• Devaney Robert
• Morgan Daniel

Classifications

• A61B17/0642 Primary

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

• A61B17/068

  Surgical staplers {, e.g. containing multiple staples or clamps}({staplers containing only one staple A61B17/10; magazines or containers for staples A61B17/105;} for performing anastomosis A61B17/115; {staplers in general B25C5/00}) · CPC title

• A61B17/0682

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

• A61B17/10

  for applying or removing wound clamps {, e.g. containing only one clamp or staple (A61B17/076 takes precedence; containing multiple wound clamps A61B17/068)}; Wound clamp magazines · CPC title

• A61B17/86

  Pins or screws {or threaded wires; nuts therefor (A61B17/72 take precedence)} · CPC title