Denco Corporation

Other

E.i. Dupont De Nemours and Company

Dudley W Spencer

John B Shaposka

Ivars V Ivansons

Valdis Ivansons

Theresa M Preston

Gregory M Bak

Robert J Beird

Vadlis Ivansons

Plastic tubes are welded by first placing the plastic tubes across aligned tube slots in a pair of side by side tube holders. The tubes are clamped to create a fluid free area. The clamps in one of the tube holders are shifted laterally away from the other tube holders to increase the fluid free area of each tube. A cold cutting device cuts through the clamped tubes to create four stub ends. The four stub ends are heated/melted. The stub ends are realigned so that the one stub end in one holder is aligned with the other stub end of the other tube holder and the realigned stub ends are pressed into contact with each other to create a weld seam.

Device for welding plastic tubes

A female urinary system comprises an appliance including a hollow open top urine receiving body having a peripheral rim for fitting under the urethra. The body includes a receiving portion which would be located below the urethra and which merges into a discharge bowl having a discharge opening leading to an integral downwardly extending discharge tube. The discharge tube preferably has a spiral groove in its outer surface to permit the tube to bend without kinking or otherwise cutting off flow through the tube. The appliance also includes a vent located at the highest portion of the appliance. The vent includes a vent hole extending completely through the wall of the appliance and a vent groove leading from the hole to the spiral groove. The central axis of the urine receiving body is at an obtuse angle with respect to the longitudinal axis of the discharge tube.

Female urinary system

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 comprise two outer transparent layers and an intermediate layer having limited light transmission characteristics. When the wafer is heated the intermediate layer shrinks thereby changing the light transmission characteristics by providing a path for light to pass through the laminate without passing through the intermediate layer.

Wafer for use in selective connecting and disconnecting of plastic tubes

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.

Ionomeric modified poly-ether-ester plastic container for cryogenic

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 processing and as sheets and films for bacterial and virus exclusion. The ionomeric modified poly-ether-ester has various advantages which make it particularly suitable for such uses. The silica may be in the form of colloidal silica dioxide or silica oil.

Surgical/medical tubing and containers for use in conveying medical

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 food processing and as sheets and films for bacterial and virus exclusion. The ionomeric modified poly-ether-ester has various advantages which make it particularly suitable for such uses.

Medical tubing and containers for use in conveying medical solutions and

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 for connecting/disconnecting plastic tubes wherein the device includes a sensor which would deactivate the device if the sensor detects the change in light transmission characteristics thereby indicating that the wafer had been previously used.

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 an angle of about 14.degree..

Sterile containment welding device for plastic tubes

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 other and the secondary tube sections aligned with each other. The tubes are heated by a wafer to create four separate tube sections which are then joined together in a dual weld wherein one of the welds joins the primary tube sections together and the other of the welds joins the secondary tube sections together. The welded primary tube sections are then separated from the secondary tube sections. Communication between each pair of tube sections is achieved by pressing the tube section open at the weld.

Total containment welding of plastic tubes

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 from the trailing downstream edge inwardly. In order to assure single use usage of the wafer, an aperture is provided through the wafer with the aperture being covered by a sensing material. A sensor in the device will inactivate the device if the sensing material is not detected.

Wafer for use in the selective connecting and disconnecting of plastic

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 bacterial and virus exclusion. The ionomeric modified poly-ether-ester has various advantages which make it particularly suitable for such uses.

Ionomeric modified poly-ether-ester plastic tube for use in conveying

Wafer for the welding and/or cutting of plastic tubes

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 welded connection. Each side of the wafer has a scoop to remove excess plastic material at the ends of the tubes to control the size of the weld connection. A pair of structural cam elements is used to create a precise spacing between each set of clamp jaws for guiding the wafer to control the plastic volume of the weld. The resulting weld is independent of rheology of plastic. The same device could also be used for disconnect purposes by cutting through a single tube and forming two tube sections. Unique double jaw construction is also disclosed.

Growing community of inventors

Wilmington, DE, United States of America

Dudley W Spencer