Rasp handle adapter

Patent metadata

Field	Value
Publication number	US-11602359-B2
Application number	US-202117149514-A
Country	US
Kind code	B2
Filing date	Jan 14, 2021
Priority date	Jan 24, 2020
Publication date	Mar 14, 2023
Grant date	Mar 14, 2023

Abstract

Disclosed herein are rasp adapters, rasp systems, and method of use thereof. The rasp adapter can include a body and a retention element. The body can define a body cavity, a handle opening, and a trunnion bore. The retention element can be located within the body cavity and can include a knuckle and a heal. The knuckle can be located proximate to and movable into and out of the trunnion bore. The heal can be located proximate the handle opening. Movement of the retention element due to a force applied to the heal can cause movement of the retention element and movement of the knuckle into the trunnion bore.

First claim

What is claimed is:

1. A rasp adapter comprising:
a body that defines a body cavity, a handle opening, and a trunnion bore; and
a retention element located within the body cavity, the retention element including:
a knuckle located proximate to and movable into and out of the trunnion bore, and
a heal located proximate the handle opening,

wherein movement of the retention element due to a force applied to the heal causes movement of the retention element and movement of the knuckle into the trunnion bore.

2. The rasp adapter of claim 1 , wherein the retention element is coupled to the body via a spring.

3. The rasp adapter of claim 1 , further comprising a trunnion protruding from a superior surface of the body, the trunnion defining at least one trunnion notch.

4. The rasp adapter of claim 3 , wherein the trunnion, the retention element, and the body are a monolithic component.

5. The rasp adapter of claim 1 , further comprising a protrusion extending from an inferior surface of the body.

6. The rasp adapter of claim 1 , further comprising a stop located proximate the knuckle.

7. The rasp adapter of claim 1 , wherein a surface of the body cavity defines an arch structure with an apex proximate the knuckle.

8. The rasp adapter of claim 1 , wherein the knuckle defines a lead in proximate the trunnion bore.

9. The rasp adapter of claim 1 , further comprising a pin pivotably coupling the retention element to the body.

10. The rasp adapter of claim 1 , further comprising a biasing element located within the body cavity and arranged to bias the knuckle into the trunnion bore.

11. A rasp adapter comprising:
a body having an interior surface that defines a body cavity, a handle opening, and a trunnion bore;
a trunnion protruding from a superior surface of the body;
a biasing element located within the body cavity; and
a retention element located within the body cavity and coupled to the body via the biasing element, the retention element including:
a knuckle located proximate to and moveable into and out of the trunnion bore, and
a heal located proximate the handle opening,

wherein movement of the retention element due to a force applied to the heal causes movement of the retention element and movement of the knuckle into the trunnion bore.

12. The rasp adapter of claim 11 , wherein the biasing element comprises a plurality of spring legs.

13. The rasp adapter of claim 11 , wherein the trunnion defines at least one trunnion notch.

14. The rasp adapter of claim 11 , further comprising a protrusion extending from an inferior surface of the body.

15. The rasp adapter of claim 11 , wherein the interior surface of the body cavity defines an arch structure with an apex proximate the knuckle.

16. The rasp adapter of claim 11 , wherein the knuckle defines a lead in proximate the trunnion bore.

17. The rasp adapter of claim 11 , wherein the biasing element, the retention element, and the body are a monolithic component.

18. A rasp system comprising:
a handle having a first end that defines a first trunnion bore and a handle pin; and
a plurality of adapters, each of the plurality of adapters comprising:
a body having an interior surface that defines a body cavity, a handle opening sized to receive the handle pin, and a second trunnion bore;
a trunnion protruding from a superior surface of the body, the trunnion defining at least one trunnion notch;
a biasing element located within the body cavity; and
a retention element located within the body cavity and coupled to the body via the biasing element, the retention element including a knuckle located proximate to and moveable into and out of the second trunnion bore, and a heal located proximate the handle opening,

wherein the biasing element of at least one of the plurality of adapters comprises a plurality of spring legs,
wherein the knuckle of at least one of the plurality of adapters defines a lead in proximate the second trunnion bore,
wherein upon insertion of the handle pin into the handle opening and the trunnion into the first trunnion bore, the handle pin contacts the heal and causes the knuckle to move into the second trunnion bore,
wherein a combination of trunnion and second trunnion bore sizes differs for each of the plurality of adapters.

19. The rasp system of claim 18 , wherein at least one of the plurality of adapters comprises a protrusion extending from an inferior surface of the body.

20. The rasp system of claim 18 , wherein the interior surface of at least one of the plurality of adapters defines an arch structure with an apex proximate the knuckle.

Assignees

• Zimmer Inc

Inventors

• Clements Joshua
• Collins James S
• Gray Christopher A

Classifications

• A61B17/92 Primary

  Impactors or extractors, e.g. for removing intramedullary devices {(insertion or extraction of artificial joints A61F2/4603)} · CPC title

• A61B2017/00469

  for insertion of instruments, e.g. guide wire, optical fibre · CPC title

• A61B17/162

  Chucks or tool parts which are to be held in a chuck · CPC title

• A61B17/1659 Primary

  Surgical rasps, files, planes, or scrapers · CPC title

• A61B2017/00486

  Adaptors for coupling parts with incompatible geometries · CPC title