David SokalDallas, TX

8132566, Mar 13, 2012

Sep 23, 2008

12/235727

David C. Sokal - Durham NC, US

Family Health International - Durham NC

A61F 6/00

128843, 128842, 606157

A medical device is provided which forms a physical barrier between the two ends of a cut vas during a vasectomy procedure, comprising a biodegradable, polymeric cap that is applied over at least one prostatic end of the vas, the cap including a fastener for preventing premature dislodgement.

8357117, Jan 22, 2013

Aug 5, 2009

12/536219

David C. Sokal - Durham NC, US
Stephen E Gerrard - Altrincham, GB
Elizabeth Kneen - Ottumwa IA, US
Ryan Hubbard - Kingsport TN, US
Geoff Galgon - Pasadena CA, US
Tombozgani Banda - Chichiri, MW

Family Health International - Durham NC

A61M 1/06
A61J 7/00
A61J 17/00
A61M 37/00
A47G 21/18

604 76, 604 74, 604 77, 604 85, 426 85, 606236

A device for delivering an agent into breast milk while breastfeeding. In one embodiment, the device includes a breast shield modified to engage a non-woven material which has been impregnated with a milk soluble active agent such as sodium dodecyl sulphate (SDS). A lactating animal, e. g. a woman, uses this agent-delivering breast shield during breastfeeding to administer prophylactic or therapeutic agents to a suckling infant. The inventions are particularly well suited to preventing transmission of HIV virus from mother to child. Alternatively, the agent-laden material could be used with a baby bottle nipple or pacifier.

2004013, Jul 15, 2004

Mar 5, 2004

10/471950

David Sokal - Durham NC, US
Marc Goldstein - New York NY, US

A61K031/554
A61K031/5415

514/211070, 514/224800

A vasectomy procedure is performed using a vas irrigation solution having a spermicidal agent that (a) acts to reduce the viability of downstream sperm following a vasectomy procedure and (b) has been established as safe and non-toxic in humans when administered by intravenous or other routes of injection for the treatment of other conditions. Preferred spermicidal agents are methylene blue and diltiazem. A kit having a pair of single-use, pre-filled injection devices is also disclosed.

5826594, Oct 27, 1998

Jan 15, 1997

8/783765

David C. Sokal - Mebane NC

A61C 1500

132200

Personal oral hygiene of the general population is improved by making flossing considerably easier and less time consuming than it is when performed pursuant to current recommendations of the dental profession. This invention is an improved method for cleaning the interproximal tooth surfaces, comprising alternating the flossing of the lower teeth and the upper teeth in separate flossing sessions. A preferred embodiment is to floss the lower teeth on Mondays, Wednesdays and Fridays, and the upper teeth on Tuesdays, Thursdays, and Saturdays (or Sundays). This invention can maintain gingival health with less than half the time and effort of currently recommended methods. An alternative embodiment is to floss the lower and upper teeth on alternate days, irrespective of the day of the week. The invention may be carried out with any type of dental floss, and with any mechanical or electrical flossing aid, as well as other kinds of interdental cleaners. The invention includes novel floss dispensing devices to help users remember to floss properly according to the invention.