David H Armstrong

US Patent:

8021317, Sep 20, 2011

Filed:

Apr 25, 2008

Appl. No.:

12/149047

Inventors:

William Arnold - Woodland Hills CA, US
Michael Campos - Sylmar CA, US
Chad Leeder - Newbury Park CA, US
David Armstrong - Green Oaks IL, US

Assignee:

Ossur HF - Reykjavik

International Classification:

A61F 5/00
A61F 5/37

US Classification:

602 28, 602 16, 602 23, 128882

Abstract:

Orthopedic device for treating neuropathic ulcers and other injuries while allowing easy access to the wound site on the plantar surface of a patient's foot includes a base portion and a sole that is either movably connected or removably connected to either the base or to a strut member. The base or strut is maintained in position on the lower leg while the sole may be rotated, slid, or completely removed for allowing inspection and access to the plantar surface of the patient's foot.

US Patent:

20110288461, Nov 24, 2011

Filed:

Aug 2, 2011

Appl. No.:

13/196323

Inventors:

William ARNOLD - Woodland Hills CA, US
Michael CAMPOS - Sylmar CA, US
Chad LEEDER - Newbury Park CA, US
David ARMSTRONG - Green Oaks IL, US

International Classification:

A61F 5/00
A61F 5/14

US Classification:

602 27, 36140

Abstract:

Orthopedic device for treating neuropathic ulcers and other injuries while allowing easy access to the wound site on the plantar surface of a patient's foot includes a base portion and a sole that is either movably connected or removably connected to either the base or to a strut member. The base or strut is maintained in position on the lower leg while the sole may be rotated, slid, or completely removed for allowing inspection and access to the plantar surface of the patient's foot.

US Patent:

20200324020, Oct 15, 2020

Filed:

Apr 10, 2020

Appl. No.:

16/845633

Inventors:

- Wolhusen, CH
David ARMSTRONG - Los Angeles CA, US
Paul GLAT - Conshohocken PA, US
Jarrod KAUFMAN - Brick NJ, US
Marco MEHR - Willisau, CH
Lothar SCHLOESSER - Luzern, CH
Mark SPILKER - Kilchberg, CH

Assignee:

Geistlich Pharma AG - Wolhusen
University of Southern California - Los Angeles CA

International Classification:

A61L 27/24
A61L 27/44
A61L 27/54
A61L 27/56
A61L 27/38
A61P 17/02

Abstract:

A method, material, and kit for promoting neutrophils and monocytes to localize at a chronic ulcer site, promoting formation of a multi-layered cell structure in the ulcer site, promoting conversion of monocytes to macrophages, promoting secretion of the patient's own growth factors, promoting tissue proliferation and cell migration, promoting production and cross-linking of collagen at the chronic ulcer site, promoting growth of endothelial cells, promoting angiogenesis that was stalled at the chronic ulcer site, promoting formation of a vascular network and granulation, promoting oxygenation of the chronic ulcer site, and reducing one or more of purulent drainage, erythema, pain, warming, tenderness, induration, and bleeding at the chronic ulcer site.