# US 10,369,026 B2 · Clamping quick connect mechanism for axial attachment

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- Number: US 10,369,026 B2
- Document ID: US10369026B2
- Status: Granted
- Kind: B2
- Application number: 15/647,605
- Filed: 2017-07-12
- Published: 2018-01-18
- Granted: 2019-08-06
- Earliest claimed: 2016-07-15
- Assignees: Zimmer, Inc.
- Applicants: Zimmer, Inc.
- Inventors: Jason S. Toler
- Web page: https://patentgrep.com/patent/US10369026B2

## CPC

- A61F 2/76: Means for assembling, fitting or testing prostheses, e.g. for measuring or balancing
- A61F 2/60: Artificial legs or feet or parts thereof
- A61F 2/80: Sockets, e.g. of suction type
- F16B 2/02: Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
- A61F 2002/7887: {for connecting limb exoprostheses to the stump bone}
- F16B 2/00: Friction-grip releasable fastenings (for cables or ropes, e.g. cleats F16G11/00 ){(connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections F16B7/00)}
- F16B 2/185: {using levers}
- F16B 7/0426: {for rods or for tubes without using the innerside thereof}
- F16B 7/1454: {with a clamp locking the telescoping members by swinging a handle provided with a locking cam (F16B7/1418 takes precedence)}
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)
- F16B: DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING (couplings for transmitting rotation F16D)

## Abstract

An apparatus including a post connectable to an implant extending from a residual limb; a base connectable to a prosthesis; and a clamping assembly configured to releasably connect the post to the base.

## Claims

### Claim 1

An apparatus comprising: a post connectable to an implant extending from a residual limb; a base connectable to a prosthesis; and a clamping assembly configured to releasably connect the post to the base; wherein the post includes a distal end and the base includes an internal cavity to receive the distal end of the post; wherein the clamping assembly includes a clamp ring coupled to the base around an upper opening within the internal cavity of the base, the clamp ring including an open ring portion and a pair of arms extending from the open ring portion, the clamping assembly further including a rod extending through holes, wherein in each of the arms includes one of the holes, a bearing located at an outer portion of one of the arms with the rod also extending through the bearing, the clamping assembly further including a lever rotatably coupled to an end of the rod, the lever including a cam portion to move against the bearing, wherein activating the lever moves the clamp ring between an open state and a closed state; wherein the distal end of the post includes a keyed portion to cooperate with an opposed keyed portion within the internal cavity of the base and the pair of arms extends through the keyed portion of the base.

### Claim 2 (depends on 1)

The apparatus of claim 1, wherein the post includes a proximal end having a female portion that is tapered to receive a male portion that is tapered of the implant.

### Claim 3 (depends on 1)

The apparatus of claim 1, wherein the clamp ring is configured to receive the post within the clamp ring.

### Claim 4 (depends on 3)

The apparatus of claim 3, wherein in the open state the post can freely move within the clamp ring, and in the closed state the post is coupled to the base via the clamp ring.

### Claim 5 (depends on 3)

The apparatus of claim 3, wherein an outer surface of the post includes a chamfered surface and the clamp ring includes an opposing inner chamfered surface such that when the clamp ring is moved to a closed state the inner chamfered surface of the clamp ring applies a force against the chamfered outer surface of the post to drive a distal end surface of the distal end of the post against a surface within the cavity of the base.

### Claim 6 (depends on 1)

The apparatus of claim 1, wherein the clamp ring is coupled within a groove located on an inner surface of the base around the cavity.

### Claim 7

An apparatus comprising: a post connectable to an implant extending from a residual limb; a base connectable to a prosthesis, the base including a cavity to removably receive the post; and a clamping assembly configured to releasably connect the post to the base; wherein the clamping assembly is configured such that closing the clamping assembly around the post drives a distal end surface of the post against a surface within the internal cavity of the base; wherein an outer surface of the post includes a chamfered surface and a portion of the clamping assembly includes an opposing inner chamfered surface such that when the clamping assembly is closed, the inner chamfered surface of the clamping assembly applies a force against the chamfered outer surface of the post to drive the distal end surface of the post against the surface within the internal cavity of the base; wherein the portion of the clamping assembly having the opposed inner chamfered surface includes a clamp ring coupled to the base, the clamp ring configured to receive the post; wherein the clamping assembly further includes a lever configured to move the clamp ring between an open state and a closed state, wherein in the open state the post can freely move within the clamp ring, and in the closed state the post is coupled to the base via the clamp ring; wherein the clamp ring is coupled to the base around an upper opening of the internal cavity within the base, the clamp ring including an open ring portion and a pair of arms extending from the open ring portion, the clamping assembly further including a rod extending through a hole in each of the arms, a bearing located at an outer portion of one of the pair of arms with the rod also extending through the bearing, the clamping assembly further including a lever rotatably coupled to an end of the rod, the lever including a cam portion to engage with the bearing, wherein activating the lever moves the clamp ring between the open state and the closed state; wherein the distal end of the post includes a keyed portion to cooperate with an opposed keyed portion within the internal cavity of the base and the pair of arms extends through the keyed portion of the base.

### Claim 8 (depends on 7)

The apparatus of claim 7, wherein the post includes a proximal end having a female portion that is tapered to receive a male portion that is tapered of the implant.