Steven R Walker

US Patent:

6981969, Jan 3, 2006

Filed:

May 22, 2003

Appl. No.:

10/442923

Inventors:

Saturnino Chavez - West Point NY, US
Steven C. Walker - Waxahachie TX, US
John M. Shepherd - San Antonio TX, US

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

A61M 25/00
A61M 5/178
A61M 31/00
A61M 37/00

US Classification:

604523, 60417003, 60428801, 60428802

Abstract:

An orthogonal arterial catheter preferably includes a hub and a cannula. The hub preferably protects the cannula from potential kinking and shearing forces because the cannula upon exiting a patient's body enters the hub. The hub preferably provides a passageway through which the hose travels to a connector piece. The connector piece preferably attaches the device to a fluid line such as an arterial line transducer. In addition, the hub preferably includes a port that provides a channel through which a guide wire or a needle may gain access to the cannula. The hub also may include appendages extending from it to suture to the patient.

US Patent:

7149562, Dec 12, 2006

Filed:

Sep 17, 2003

Appl. No.:

10/663684

Inventors:

Steven C. Walker - Waxahachie TX, US
John M. Shepherd - San Antonio TX, US
Leopoldo C. Cancio - San Antonio TX, US

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

A61B 5/00

US Classification:

600339, 600341, 600342

Abstract:

A needle with fiber optic capability for spectrophotometric analysis includes a needle assembly including a needle body having an open tip and side radiation ports. A fiber optic element is disposed in the needle assembly for carrying electromagnetic radiation to the open tip area for transmission to a target area. Fiber optic bundles in communication with the radiation ports are disposed in the needle body for transmitting backscattered radiation to a light detector or sensor for spectrophotometric analysis. The needle assembly may include barbs for anchoring the device in place.

US Patent:

20050256458, Nov 17, 2005

Filed:

Apr 18, 2005

Appl. No.:

11/108131

Inventors:

Pamela Howard - Allentown PA, US
Eben Howard - Allentown PA, US
Steven Walker - Waxahachie TX, US
John Shepherd - San Antonio TX, US

Assignee:

Eben Howard and Pamela A. Howard - Allentown PA

International Classification:

A61M029/00

US Classification:

604174000, 604104000

Abstract:

A self-securing catheter to prevent dislodgement from skin or tissue preferably includes a hub and a cannula with at least one anchoring mechanism extending from the hub and/or the cannula. In some embodiments, the anchoring mechanisms can be flexible to allow them to protrude outwardly from the catheter. The catheter can be easily removed from the patient's tissue or skin by a medical professional with a twisting motion (e.g., clockwise or counterclockwise rotation of the catheter).

US Patent:

20050256459, Nov 17, 2005

Filed:

Apr 18, 2005

Appl. No.:

11/108132

Inventors:

Pamela Howard - Allentown PA, US
Eben Howard - Allentown PA, US
Steven Walker - Waxahachie TX, US
John Shepherd - San Antonio TX, US

Assignee:

Eben Howard and Pamela A. Howard - Allentown PA

International Classification:

A61M005/32

US Classification:

604174000

Abstract:

The invention is a hub anchor for securing a catheter to a patient's tissue or skin. The hub anchor preferably includes in at least one embodiment includes a body having a pair of walls connected by an activation mechanism having at least one leg in sliding communication with each of the walls. In an engaged state, the legs penetrate a patient's skin and cause the hub to clamp the catheter to the patient. The invention also includes a method of placing the hub over a catheter to be secured and pressing the activation mechanism to pierce the patient's skin with the legs to secure the hub and the catheter to the patient.

US Patent:

20060079838, Apr 13, 2006

Filed:

Oct 8, 2004

Appl. No.:

10/959991

Inventors:

Steven Walker - Waxahachie TX, US
Pamela Howard - Allentown PA, US
Eben Howard - Allentown PA, US

International Classification:

A61M 29/00

US Classification:

604104000, 604175000, 604101050

Abstract:

This invention relates to inflatable anchor members for securing devices in an orifice. Anchor member comprises a fluid tight material having an inflatable interior. The anchor is configured to include an opening for receiving a device. The anchor may be inflated to secure the device within its opening. The anchor includes a fill line for receiving and removing fill material from the anchor. The anchor may be disposed inside the chest of a patient and inflated to secure a chest tube in position without the need for sutures. A second inflatable anchor may be used and positioned on an opposite side of an orifice from the first anchor to hinder movement of a device passing therethrough.

US Patent:

20060079845, Apr 13, 2006

Filed:

Jun 10, 2005

Appl. No.:

11/149433

Inventors:

Pamela Howard - Allentown PA, US
Eben Howard - Allentown PA, US
Steven Walker - Waxahachie TX, US

Assignee:

Eben Howard and Pamela A. Howard - Allentown PA

International Classification:

A61M 5/32

US Classification:

604175000, 604104000, 604101050

Abstract:

A medical device preferably includes a tube and at least one adjustable inflatable anchor. The anchor is capable of securing the tube to the patient to resist removal of the tube in the patient when the anchor is inflated within the patient. The anchor slidingly engages the tube such that the insertion depth can be selected by the user. In at least one embodiment, a second inflatable anchor is included for positioning outside of the patient.