1
Charles W Daugherty: Self contained needle and shield. Becton Dickinson and Company, Eric M Lee, October 31, 1995: US05462533 (154 worldwide citation)

A surgical needle is disclosed which is made up of two concentric tubes. The inner tube has a sharp tip like a conventional hypodermic or intravenous needle. The inner tube can be retracted into the outer tube after use. In one embodiment, the needle forms part of a catheter assembly. A catheter is ...


2
Charles W Daugherty: Needle shield with collapsible cover. Becton Dickinson and Company, Eric M Lee, December 9, 1997: US05695474 (130 worldwide citation)

A needle assembly is provided with a collapsible needle shield. In one embodiment of the needle shield assembly, the proximal portion of the handle is formed from a collapsible, non-elastic material. In a second embodiment, the proximal portion of the handle is formed from a telescoping tube that en ...


3
Charles W Daugherty, Mohammad A Khan, David J Lentz, Stephen L Thoresen: Catheter tip configuration. Warner Lambert Company, Aaron Passman, May 13, 1986: US04588398 (115 worldwide citation)

A specific configuration for an over the needle catheter having a tapered outer wall and an angled introducer tip is disclosed. The catheter is molded of polyurethane material which is treated with a surface lubricant to ease the over the needle introduction of the catheter after venipuncture. The p ...


4
Richard W Beck, Charles W Daugherty, Steven H Mersch: Catheter introducer assembly. Becton Dickinson and Company, Michael G Schwarz, June 1, 1993: US05215527 (95 worldwide citation)

As assembly is provided utilizing a combined catheter and introducer which cooperate to provide efficient infusion of drugs from the in-place assembly even on an intermittent basis with no return blood flow and without the need for any kind of involved valve assembly, or expensive heparin or saline ...


5
William Garrettson Ellis, Paul William Heavner Jr, Charles W Daugherty: Diagnostic electrode assembly. Baxter Travenol Laboratories, Eugene M Cummings, Paul C Flattery, John P Kirby Jr, March 7, 1978: US04077397 (95 worldwide citation)

A disposable electrode assembly for establishing electrical contact with an underlying skin surface includes a relatively thin base member having a central hub portion and an adhesive-coated undersurface, a conductive gel-impregnated sponge contact contained in a downwardly facing recess located in ...


6
Charles W Daugherty: Bloodless flashback vent. Eric M Lee Esq, August 6, 1996: US05542932 (75 worldwide citation)

This invention is an improved flashback vent. A thin piece of biocompatible material is affixed over the open proximal end of a flashback chamber or a plug in the flashback chamber. This material has a plurality of holes formed therein. Thus, where the flashback chamber is used with an IV catheter i ...


7
Charles W Daugherty: Method and apparatus for flashless tipping of an I.V. catheter. Becton Dickinson and Company, A Passman, April 28, 1987: US04661300 (73 worldwide citation)

A method and apparatus for tipping one end of an I.V. catheter includes the method steps for use of the apparatus including mounting a catheter to be tipped onto a mandrel supported on a carriage; a die having an interior molding surface, at least one portion of which is tapered according to the tip ...


8
Charles W Daugherty, Timothy J Erskine, Glade Howell: Valved PRN adapter for medical access devices. Becton Dickinson and Company, Eric M Lee, July 7, 1998: US05776113 (68 worldwide citation)

A valved adapter for connecting a fluid handling device to a medical device includes a body with a longitudinal axis having a proximal end, a distal end and a chamber therewithin. The body includes a passageway from the proximal end to the distal end and has a valve contained within the chamber in a ...


9
Steve H Mersch, David E Spielvogel, Charles W Daugherty: Vent for flashback plug. Becton Dickinson and Company, Robert P Grindle, November 19, 1991: US05066284 (46 worldwide citation)

A flashback vent plug is provided for catheters with air vents drilled by a laser beam which allow venting of the hollow plug upon venous entry, but which vents are so small that blood cannot pass. As a result, no leakage ever takes place. As a further feature of the invention, is the addition of a ...


10
Kevin G Tingey, Victor A Williamitis, Charles W Daugherty, Jeanne E Lambert, Steven H Mersch: Lubricant soluble fluorescent agent and method for its use in a system for detection of lubricant coatings. Becton Dickinson and Company, Eric M Lee, September 15, 1998: US05807605 (37 worldwide citation)

A method for visualization of a lubricant coating on a surface of an article includes dissolving a fluorescent agent into a lubricant. The method then includes applying the fluorescenated lubricant to coat a surface of the article. The coated article is then irradiated with an electromagnetic radiat ...