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Inventor:
Spencer; Dudley W. C.
Address:
Wilmington, DE
No. of patents:
44
Patents:












Patent Number Title Of Patent Date Issued
D357926 Wafer for the welding and/or cutting of plastic tubes May 2, 1995
D355848 Package for a wafer for the welding and/or cutting of plastic tubes February 28, 1995
8066269 Clamp locking mechanism in device for welding plastic tubes November 29, 2011
A device for welding plastic tubes includes a laterally movable tube holder having tube holding areas and a laterally fixed tube holder having tube holding areas. Each tube holder includes clamping structure for clamping each tube placed in the respective tube holder areas and for cr
7731914 Ozone infection control device June 8, 2010
An infection control device includes a plurality of air inlets spaced around the device's peripheral skirt. A negative ion ozone generator having a plurality of spaced pointed projections is inwardly of the peripheral skirt with a ground disk inwardly of the generator. Air flows thro
6852231 Spin-hemodialysis assembly and method February 8, 2005
Blood is purified by removing the whole blood from a patient and feeding the blood into a manifold in a centrifuge. A purifying chamber is formed in the centrifuge from a plurality of co-arcuately arranged modules. The blood is supplied from the manifold to each of the modules. Each modu
6716181 Female urinary device April 6, 2004
A female urinary system includes an appliance which has a hollow urinary receiving open top body. The upper edge of the body is shaped to fit under the urethra. The body has an outlet passage for discharging urine flowing into the body from the urethra. A vaginal area locating bulb is mo
6637489 Wafer for use in the selective connecting and disconnecting of plastic tubes October 28, 2003
A wafer for use in selectively connecting and disconnecting plastic tubes is in the form of a heatable plate having side walls and having a leading end and a trailing end. An outwardly extending scoop is formed on each of the side walls between and spaced from the leading end and the tra
6348049 Surgical/medical tubing and containers for use in conveying medical solutions and the like February 19, 2002
Surgical/medical tubing and containers are made from an ionomeric modified poly-ether-ester plastic material is used as a substitute for the conventional uses of polyvinyl chloride. The ionomeric modified poly-ether-ester has various advantages which make it particularly suitable for
6132833 Wafer for use in selective connecting and disconnecting of plastic tubes October 17, 2000
A wafer for use in the selective connecting and disconnecting of plastic tubes incorporates a fuse in an aperture. The fuse is made of a three layer laminate having light transmission characteristics which change after the wafer and its laminate have been heated. The three layers com
6071690 Ionomeric modified poly-ether-ester plastic container for cryogenic fluids June 6, 2000
Plastic articles made of ionomeric modified poly-ether-ester are stored in a cryogenic fluid containing receptacle. The articles may be tubing or bags or articles of surgical equipment or clothing.
5928216 Surgical/medical tubing and containers for use in conveying medical solutions and the like July 27, 1999
An ionomeric modified poly-ether-ester plastic material combined with a small amount of silica is used as a substitute for the conventional uses of polyvinylchloride in such applications as tubing for medical applications, for bags and other medical containers, for tubing in food pro
5919173 Medical tubing and containers for use in conveying medical solutions and the like July 6, 1999
An ionomeric modified poly-ether-ester plastic material combined with a small amount of polyvinylchloride is used as a substitute for the conventional uses of polyvinylchloride in such applications as tubing for medical applications, for bags and other medical containers, for tubing in
5871612 Wafer for use in selective connecting and disconnecting of plastic tubes February 16, 1999
A wafer for use in the selective connecting and disconnecting of plastic tubes incorporates a fuse in an aperture. The fuse is made of a laminate having light transmission characteristics which change after the wafer and its laminate have been heated. The wafer would be used in a device
5855731 Sterile containment welding device for plastic tubes January 5, 1999
A sterile containment welding device for plastic tubes includes a pair of alignable tube holders each of which includes a base having a tube receiving channel and a clamping jaw pivotally mounted to the base. The outer end of the tube receiving channel is outwardly flared preferably at
5733268 Medical tubing and containers for use in conveying medical solutions and the like March 31, 1998
An ionomeric modified poly-ether-ester plastic material combined with a small amount of polyvinylchloride is used as a substitute for the conventional uses of polyvinylchloride in such applications as tubing for medical applications, for bags and other medical containers, for tubing in
5674333 Total containment welding of plastic tubes October 7, 1997
Plastic tube sections are connected together by providing a pair of tubes each of which is inserted into the holder of a welding device in a bent condition so that each tube has a primary tube section and a secondary tube section with the primary tube sections being aligned with each oth
5525186 Wafer for use in the selective connecting and disconnecting of plastic tubes June 11, 1996
A wafer is used in a device for the selective connecting and disconnecting of plastic tubes. The wafer is in the form of a heated plate having an outwardly extending scoop on each side thereof. The wafer also includes a generally straight line horizontal slit extending through the plate
5496291 Ionomeric modified poly-ether-ester plastic tube for use in conveying medical solutions and the March 5, 1996
An ionomeric modified poly-ether-ester plastic material is used as a substitute for the conventional uses of polyvinyl chloride in such applications as tubing for medical applications, for bags and other medical containers, for tubing in food processing and as sheets and films for ba
5397425 Total containment welding of plastic tubes March 14, 1995
A pair of plastic tubes are welded together by mounting each tube in the clamp jaws of a holder. A heated wafer is movably mounted in the gap between the tubes to cause the ends of the tubes to melt. The melted ends of the opposed tubes are pressed into contact with each other to form a
5342345 Solution bag with plastic connecting tube August 30, 1994
A solution bag for containing consumables is made of a plastic material which is closed around its edges and has a sealed access edge. A plastic discharge tube is mounted at the access edge and communicates with the interior of the bag. The tube is an elongated tube which would be co
5279685 Total containment device for connect/disconnect of plastic tubes January 18, 1994
A device for selectively connecting and disconnecting plastic tubes includes a welder. A carriage is located in the welder for conveying a heated wafer through the welder. A pair of arms is mounted in the welder with each arm having a tube holding pocket which extends across its resp
5256229 Sterile containment welding device for plastic tubes October 26, 1993
A sterile containment welding device for plastic tubes comprises a pair of side by side spaced tube holders. Each of the tube holders includes a clamp base and a clamp lid. A pocket is provided in each clamp base extending completely across the clamp base so that a plastic tube could be
5244522 Total containment welding of plastic tubes September 14, 1993
A pair of hollow plastic tubes are welded together by mounting each tube in the clamp jaws of a holder in a bent condition to form the U-shape. A structural element is utilized to create a space between the bight of the U-shape and the holder. The bent tubes are disposed toward each othe
5209800 Total containment welding of plastic tubes May 11, 1993
A plastic tube is cut into two sections which are sealed closed by a sterile method wherein the tube is loaded into two clamping jaws which flatten the tube. The tube is cut through the flattened section and the cut ends are heated to their molten state. A wafer having wings is located
5156701 Total containment welding of plastic tubes October 20, 1992
Plastic tubes are welded together by placing each tube in a nest which includes a pair of grooves and an anvil centrally located between the grooves. Each tube is positioned in the grooves around the anvil for being juxtaposed the other tube. A wafer of movably mounted to move to the gap
5037395 Catheter for suppressing tunnel infection August 6, 1991
An implanted catheter suppresses tunnel infection by having its surface temperature raised to a point above which the bacteria residing on the surface cannot survive. The temperature is held at that temperature level for 20 milliseconds whereby the catheter can be cleaned of the bio-burd
4933036 Techniques for welding thermoplastic tubes June 12, 1990
Two thermoplastic tubes are welded together by pre-cutting the tubes to create two ends which are axially aligned when placed in a holding device. A wafer is inserted in the space between the cut ends and the wafer is heated to melt the cut ends while the cut ends are in a non-flattened
4832773 Techniques for welding thermoplastic tubes May 23, 1989
Thermoplastic tubes are welded together in a dry condition with the tubes being open and maintained in their undistorted condition during the welding step. In an alternative technique a branch tube is welded to a main tube by placing the tubes in a non-parallel orientation in a holding
4793880 Sterile welding of plastic tubes December 27, 1988
A linear welding process and apparatus connects fluid-filled tubes in a sterile manner. The linear welder includes a base on which a carriage is slidably mounted. A pair of side by side arms are secured to the carriage as are a pair of tube holders. A pair of clamping jaws are mounted on
4770735 Techniques for welding thermoplastic tubes September 13, 1988
Thermoplastic tubes are welded together in a dry condition with the tubes being open and maintained in their undistorted condition during the welding step. In an alternative technique a branch tube is welded to a main tube by placing the tubes in a non-parallel orientation in a holding
4753697 Total-containment sterile process and system June 28, 1988
A process and system is provided for making a connection between two fluid-filled plastic tubes that ensures total containment of potentially dangerous fluids and maintaining sterility of the connection. The tubes are folded to remove all fluid from the weld site and positioned to cause
4619642 Sterile, cold cut connection process, apparatus and system October 28, 1986
A process, apparatus and system for making a sterile connection between thermoplastic tubes. A section of each tube is flattened and a cutting means is urged through the flattened sections. The tubes are aligned with each other and then the cut tube ends are melted, sterilized, and urged
4610670 Sterile connection process, apparatus and system September 9, 1986
A process, apparatus and system for making a sterile connection between thermoplastic resin tubes is disclosed. A section of each tube is flattened and a hot cutting means is urged through the flattened sections so as to seal temporarily each tube and to provide molten tube ends. The
4516971 Sterile docking process, apparatus and system May 14, 1985
A process, apparatus and system for making a sterile connection between two thermoplastic resin tubes is disclosed. The tubes are severed by an array of hot wires so as to form molten tube ends. The array is maintained at a temperature such that ambient air immediately within the vicinit
4507119 Sterile docking process, apparatus and system March 26, 1985
A process, apparatus and system for making a sterile connection between two thermoplastic resin tubes is disclosed. A hot stream of fluid is urged either through both said tubes transversely of the axis of each tube or through opposing side sections of the tubes substantially perpendicul
4488961 One-way filter unit December 18, 1984
A one-way filter for use in fluid filtration comprising a housing having inlet and outlet ports, a filter element or elements, free of mobile fibers or filaments, disposed within said housing, and means within said housing for maintaining the filter element or elements in a filtering
4412835 Sterile docking process, apparatus and system November 1, 1983
A process, apparatus and system for making a sterile connection between two thermoplastic resin tubes is disclosed. Side sections of the adjacently placed tubes are melted by passing a heated elongated body therethrough to form a molten seal between a surface of the heated body and the a
4369779 Sterile docking process, apparatus and system January 25, 1983
A process, apparatus and system for making a sterile connection between two thermoplastic resin tubes is disclosed. The tubes are cut by a hot cutting means so as to form a molten interface between the tubes and the cutting means. The tubes are aligned with each other and slid off an edg
4205726 Horseshoe manufacture June 3, 1980
A horseshoe comprises a U-shaped body member made of resilient material and having an upstanding projection at each of its free ends for fitting into corresponding pockets in the hoof with the horseshoe being additionally secured to the hoof by nails.
4182340 Hoof repair January 8, 1980
A crack in a horse's hoof is repaired by forming holes through the hoof on opposite sides of the crack, threading an elongated strand or suture through the holes in the hoof and filling the crack with adhesive material which enters into the air spaces of the strand to thereby prevent the
4116278 Horseshoe manufacture September 26, 1978
A horseshoe includes a generally U-shaped body member having a planar upper surface and a pair of free ends. An upstanding projection is mounted on the upper surface at each free end for fitting in corresponding pockets in the horse's hoof. A band may also span the free ends of the horse
4090566 Horseshoe mounting appliance and method May 23, 1978
An appliance for facilitating the adhesive mounting of a horseshoe comprises a boot having an inflatable liner in the form of a tube whereby upon inflation of the tube the horseshoe is pressed against the hoof while the adhesive is curing.
4036302 Horseshoe manufacture July 19, 1977
A horseshoe is applied to the hoof by means of elongated strands or laces which are adhesively secured to the shoe after being threaded through holes in the hoof. The laces have a breaking strength less than that of the strength of the horse's hoof. The horseshoe itself includes a pad
4013126 Horseshoe manufacture March 22, 1977
Elongated strands are threaded through holes in a horse's hoof. The strands have substantial exposed air spaces into which adhesive may flow for facilitating securement of the shoe to the hoof by interaction with the adhesive upon the shoe. Additionally, or alternatively the strands may










 
 
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