Raymond Howard Roberson

US Patent:

56833962, Nov 4, 1997

Filed:

Feb 20, 1996

Appl. No.:

8/603630

Inventors:

Leonard J. Tokish - Cordova TN
Raymond H. Roberson - Bartlett TN
Abraham B. Salehi - Bartlett TN
Brian Schumacher - Cordova TN
Gregory C. Marik - Germantown TN
Jennifer J. Lackey - Memphis TN

Assignee:

Smith & Nephew, Inc. - Memphis TN

International Classification:

A61B 1715

US Classification:

606 87

Abstract:

A knee cutting instrument apparatus includes an elongated alignment rod that can enable a surgeon to define alignment with a patient's long bone. An instrument block body can slide upon the alignment rod between its end portions. A locking member forms a connection with the rod at a selected position along the rod. The locking member includes a cam locking arrangement that rotates about a pivot on the instrument body. The cam has a handle portion or arm that enables a user to rotate the cam and its locking tab about its pivot. Part of the locking cam includes a locking tab having a slot that extends circumferentially about ninety degrees (90. degree. ) around the pivot of the cam. The slot is positioned radially in between the pivot and the periphery of the locking member at a locking member bearing surface. The slot provides a closed end portion and an open end portion that communicates with the locking member periphery at a positioned spaced away from the bearing surface. The slot is preferably sufficient long enough that it extends circumferentially the full length of the bearing surface.

US Patent:

53540751, Oct 11, 1994

Filed:

Nov 2, 1993

Appl. No.:

8/145818

Inventors:

Gregory C. Marik - Collierville TN
Raymond H. Roberson - Bartlett TN

Assignee:

Smith & Nephew Richards Inc. - Memphis TN

International Classification:

B23B 31171

US Classification:

279 72

Abstract:

A keyless drill chuck apparatus includes a tubular body having a longitudinal bore that includes first and second bore sections. The first bore section is of a smaller diameter and is closer to the proximal end portion of the drill, that end portion that is connected to a tool driver, motor or the like. The second bore section is larger diameter portion that is opened ended. A pair of bearing supports are positioned at the two bore sections. Each of the bearing holders carriers a plurality of conically-shaped bearing members. During use, a drill bit can be placed in either of the bore sections and into engagement with one of the selected sets of bearing. During use, different diameter drill bits and thus be placed as desired in the smaller or larger bore section and into engagement with the first or second set of bearing. Scalloped portions of the tool body adjacent each of the bores are provided in a corresponding number to the number of bearings. Each of the bearings registers in one of the scalloped portions.

US Patent:

55934498, Jan 14, 1997

Filed:

Mar 4, 1994

Appl. No.:

8/206515

Inventors:

Raymond H. Roberson - Bartlett TN

Assignee:

Smith & Nephew Richards Inc. - Memphis TN

International Classification:

A61F 238

US Classification:

623 20

Abstract:

A knee prosthesis for surgical implantation to a patient's leg bone at the knee joint area includes a prothesis body portion that extends transversely relative to the patient's intramedullary canal for carrying a bearing surface that articulates with the patient's adjacent leg bone or with another prosthesis component. A conical connector extends from the prosthesis portion and along an axis that generally tracks the patient's intramedullary canal. A stem member includes first and second end portions and has a central longitudinal stem axis. The stem member includes a socket at each end portion for forming connections to the conical connector at the respective end portions as selected by the surgeon. One of the sockets has a central longitudinal axis that generally coincides with the central longitudinal axis of the stem. The other socket has a central longitudinal axis that forms an acute angle with the axis of the stem.