David R Armstrong

US Patent:

6577240, Jun 10, 2003

Filed:

Jun 27, 2001

Appl. No.:

09/892982

Inventors:

David N. Armstrong - Atlanta GA 30328

International Classification:

G08B 2300

US Classification:

3405731, 4222

Abstract:

A pair of sensors ( A and B) are mounted at the entrance to a germ sensitive area. When a person enters the area the sensors are activated in sequence, indicating the direction of movement of the person. An indicator, such as a light or sound alarm is mounted upon an antiseptic dispenser, located within the area. The alarm is actuated by the movement and is de-activated once antiseptic is dispensed from the unit. Likewise when the person moves out of the germ sensitive area, the alarm on a dispenser unit located outside the area is energized and is de-activated upon dispensing of antiseptic.

US Patent:

7037314, May 2, 2006

Filed:

Apr 12, 2002

Appl. No.:

10/042998

Inventors:

David N. Armstrong - Atlanta GA, US

International Classification:

A61B 17/10

US Classification:

606140, 606 1, 606110

Abstract:

A hemorrhoidal ligator and anoscope system used to facilitate ligation of internal hemorrhoids. The ligating device consists of head, shaft and firing handle assemblies and is capable of storing and releasing multiple rubber bands singularly. The ligating device comprises an inner cylinder that is removable for disposal or reloading for reuse. The inner cylinder may also be configured with a disposable sleeve, the sleeve being disposable or capable of reloading. A modified loading cone is provided for facilitating loading of the rubber bands onto the inner cylinder or the inner cylinder sleeve. The anoscope is configured with three lateral apertures that coincide with the anatomic locations of the internal hemorrhoids in man and thus, simultaneously expose all three hemorrhoids for ligation and grading.

US Patent:

7645229, Jan 12, 2010

Filed:

Sep 21, 2004

Appl. No.:

10/945634

Inventors:

David N. Armstrong - Atlanta GA, US

International Classification:

A61B 1/00

US Classification:

600104, 600101, 600153, 600155, 600156, 600160, 606191, 606197, 606213, 623 11, 623 13, 623 131, 623 138

Abstract:

A fiber-optic endoscopic instrument (Fistuloscope) is used to visualize anorectal fistula, and to accurately identify the course through the fistula. The instrument can be used to flush the fistula, to close the fistula tract by means of injecting sealants or placing grafts in the tract of the fistula or to pass setons, micro-instruments or other means to treat and seal the tract.

US Patent:

7897167, Mar 1, 2011

Filed:

Jun 21, 2006

Appl. No.:

11/472642

Inventors:

David N. Armstrong - Atlanta GA, US
Brian L. Bates - Bloomington IN, US
Mark W. Bleyer - West Lafayette IN, US
F. Joseph Obermiller - West Lafayette IN, US
Umesh H. Patel - West Lafayette IN, US

Assignee:

Cook Incorporated - Bloomington IN
Cook Biotech Incorporated - West Lafayette IN

International Classification:

A61F 2/02

US Classification:

424426, 424423, 424422, 424400, 604 48, 623 2375

Abstract:

An implantable graft, which may be inserted into a fistula tract to occlude the primary opening of the fistula, is provided. To prevent unintentional displacement of the graft or extrusion of the graft from the fistula of a patient, the graft may be provided with a cap that extends laterally from at least one end of the body of the graft, where the cap may be integral with the body of the graft, attachable to at least one end of the body of the graft, and/or moveable along the body of the graft. The graft may also have a tail that extends from one end of the body of the graft to assist in placement of the graft in a fistula tract. The graft may be an integral unit made of a single material, such as a heterograft material, or may include distinct components made of the same or different materials. Methods for closing a fistula tract are also provided.

US Patent:

8501217, Aug 6, 2013

Filed:

Feb 1, 2011

Appl. No.:

13/018582

Inventors:

David N. Armstrong - Atlanta GA, US
Brain L. Bates - Bloomington IN, US
Mark W. Bleyer - West Lafayette IN, US
F. Joseph Obermiller - West Lafayette IN, US
Umesh H. Patel - West Lafayette IN, US

Assignee:

Cook Medical Technologies LLC - Bloomington IN
Cook Biotech Incorporated - West Lafayette IN

International Classification:

A61F 2/02

US Classification:

424426

Abstract:

An implantable graft, which may be inserted into a fistula tract to occlude the primary opening of the fistula, is provided. To prevent unintentional displacement of the graft or extrusion of the graft from the fistula of a patient, the graft may be provided with a cap that extends laterally from at least one end of the body of the graft, where the cap may be integral with the body of the graft, attachable to at least one end of the body of the graft, and/or moveable along the body of the graft. The graft may also have a tail that extends from one end of the body of the graft to assist in placement of the graft in a fistula tract. The graft may be an integral unit made of a single material, such as a heterograft material, or may include distinct components made of the same or different materials. Methods for closing a fistula tract are also provided.

US Patent:

20050159776, Jul 21, 2005

Filed:

Jan 21, 2005

Appl. No.:

11/040996

Inventors:

David Armstrong - Atlanta GA, US

International Classification:

A61B017/32
A61D001/00

US Classification:

606213000, 128887000

Abstract:

An implantable graft, which may be inserted into a fistula tract to occlude the primary opening of the fistula, is provided. The graft may have a curved, generally conical shape with a trumpet-like head end that continuously tapers to a smaller tail end. The graft may be an integral unit made of a single material, such as a heterograft material. Methods of closing single and multiple fistulae are also provided.

US Patent:

20060009797, Jan 12, 2006

Filed:

Sep 12, 2005

Appl. No.:

11/224470

Inventors:

David Armstrong - Atlanta GA, US

International Classification:

A61M 29/00

US Classification:

606197000

Abstract:

An anoscope for ligating internal hemorrhoids has an outer tubular body with lateral hemorrhoid-receiving apertures coinciding with the normal location of internal hemorrhoids in man, and a closed-ended, generally bullet-shaped head to close the distal end of the anoscope and to protect the operator from escaping gas and bowel content. A rotatable inner obturator has lateral apertures that register with the lateral apertures of the outer tubular body when the anoscope is open and intermediate slats that occlude the lateral apertures when the anoscope is closed.

US Patent:

20060240123, Oct 26, 2006

Filed:

Aug 22, 2003

Appl. No.:

10/525208

Inventors:

David Armstrong - Atlanta GA, US

Assignee:

S.L.A. PHARMA AG - LIESTAL

International Classification:

A61K 36/886
A61K 31/407
A61K 33/32
A61K 31/65
A61K 31/60
A61K 31/573
A61K 31/4166
A61K 31/545
A61K 31/355
A61K 31/24
A61K 31/192

US Classification:

424642000, 424744000, 514154000, 514171000, 514192000, 514200000, 514210090, 514398000, 514537000, 514458000, 514165000, 514569000, 514570000

Abstract:

A topical composition comprises at least 5 wt % metronidazole or a pharmacologically acceptable derivative thereof in a non-aqueous vehicle. The composition may be used in the treatment of conditions of the colon, rectum, anorectum and perianal region, in particular inflammatory bowel disease and perianal Crohn's disease. The composition also relieves pain and inflammation and promotes healing of the colon, rectum, anorectum and perianal region following surgical operations. One advantage of the composition is that topical administration of metronidazole results in a primarily local effect and thus side effects observed from systemic administration are avoided.