Abstract: Perforated tubing for surgical drainage applications and the like in which perforations are located in one or more grooves extending lengthwise of the tubing such that the sides of the grooves block access of tissue to the perforations and obturation of the tubing is prevented.

Abstract: Lower aliphatic dialdehydes have been found to react with human and other animal tissues in the living animal and that treatment of exposed tissue by topical application is useful in converting "wet" gangrene to "dry" gangrene, in forming a protective eschar for burned tissue, and for treating the raw, cut portions of the body during surgical excision of malignant tumors to prevent growth of implants resulting from dissemination of malignant cells during the excision. Threatment is generally by topical application of the dialdehyde diluted, typically, to 1 or 2 percent in a fluent carrier such as water or alcohol.

Abstract: A catheter having first and second inflatable balloon structures with a valved coupling permitting the balloon structures to be separated while remaining inflated.

Abstract: A unique circumcision device is disclosed which facilitates cutting of the foreskin of the penis and promotes complete healing of the incision without recourse to sutures and can be performed by one person without assistance.The device in its preferred form compresses in combination a male member which covers the head of the penis and has frictionally attached at one end a ring having an annular groove therein, a female member which fits over the shaft of the penis which compresses a plastic ring having a flexible wall such that its inside diameter can be increased or diminished in response to external compressive force exerted therein or removed therefrom.The male member is inserted and fits under the foreskin and the female member over the foreskin so that the plastic ring of the female member can be moved up to a positon in register which superimposes it over the ring on the male member underneath the foreskin with the foreskin caught in between the two.

Abstract: A balloon catheter is formed by blow molding an elongated polyurethane tube so that one section of the tube has a thinned cross sectional balloon area between the distal end of tube which is sealed and its open proximal end. The balloon portion which is positioned adjacent the distal end has a thinner cross sectional area which allows a balloon to be formed if a fluid is introduced into the catheter by a syringe apparatus which is adapted to be attached to the lumen by a connection adaptor. A wire guide member is adapted to be inserted through the lumen for stretching the catheter when it is inserted into a blood vessel to stiffen the catheter and position it in a proper position. The wire guide member may also be mitred at predetermined intervals to determine the position of the catheter within the blood vessel.

Abstract: A technique and a device for cutting off the flow of blood through an unwanted opening in a major blood vessel to facilitate surgical closure of the opening utilizing a dual balloon catheter inserted into the blood vessel with the balloons inflated on opposite sides of the opening.

Abstract: A surgical clamp having a one-piece body of resilient plastics material with a soft, resilient strip at the clamping surfaces. The clamp body has two arms joined by a resilient member which normally spreads the arms apart but which permits the arms to be pressed into generally parallel clamping positions. The arms are held in various relative positions by a ratchet which extends from one arm and engages the other arm and which permits adjustment of clamping pressure. The arms also have projections adjacent to the clamping surfaces thereof which prevent sideways dislodgement of a clamped part.

Abstract: There is provided a polymeric bacteriocidal composition comprising a thermoplastic, partially cross-linked polyurethane having --NH--(C.dbd.O)--O-- urethane linkages and/or urea linkages --NH--(C.dbd.O)--NH-- and iodine complexed with a sufficient number of these linkages to provide bacteriocidal properties to said composition. The polyurethane has an average molecular weight between 35,000 and 50,000, an ultimate elongation of 200 to 800% and a Shore A scale hardness of 60 to 95. The composition is shaped into a conventional medical appliance form, e.g. a catheter.

Abstract: Norepinephrine has been found as useful in a method of treatment to control gastrointestinal bleeding when injected directly into the portal blood supply by direct injection into either the peritoneal cavity or the gastrointestine i.e. intragastrically. A dose unit for such administration is also described.The method of administration described prevents systemic vasoconstriction and consequent serious hypertension in the patient. Passage through the liver inactivates the compound.

Abstract: A syringe comprising a cylindrical barrel with a wall at one end with a nozzle and with a threaded actuating rod extending from its other end, the rod carrying a piston in fluid tight engagement with the inner wall of the barrel. The rod also carries a collar with threads which mate with the rod threads, and the collar has slots which engage projections on the barrel and prevent movement of the collar relative to the barrel but which permit the collar to be disengaged readily from the barrel. A manually engageable knob is rotatably mounted on the rod at its end remote from the piston and is interconnected with the rod by a compressible, spiral spring. A ratchet wheel is mounted on the rod so as to rotate therewith and is adjacent the knob. The knob carries a spring biased pawl in the form of a tooth which is engageable with the ratchet wheel teeth.

Abstract: Novel methods for the parenteral administration of nutriments to patients, which comprises opening the umbilical vein and introducing an aqueous solution of nutriments into the opened vein, thereby permitting the maintenance of patients who are unable to ingest sufficient foods by the normal oral route.

Abstract: A syringe comprising a cylindrical barrel with a wall at one end with a nozzle and with a threaded actuating rod extending from its other end, the rod having an axial bore and a piston in fluid tight engagement with the inner wall of the barrel is connected to the rod by compressible spring means which is an extension of the rod threads. The rod also carries a collar with threads which mate with the rod threads, and the collar has slots which engage projections on the barrel and prevent movement of the collar relative to the barrel but which permit the collar to be disengaged readily from the barrel. An indicator rod is connected at one end to the piston and is slidable in the bore of the actuating rod. The opposite end of the indicator rod, bearing graduation marks, extends axially outwardly of the actuating rod.

Abstract: A syringe comprising a cylindrical barrel with a wall at one end with a nozzle and with a threaded actuating rod extending from its other end. The rod has a piston at the end thereof within the barrel, the piston being in fluid tight engagement with the inner wall of the barrel, and has a knob at its opposite end for rotating the rod. The rod also carries a collar with threads which mate with the rod threads, and the collar has slots which engage projections on the barrel and prevent movement of the collar relative to the barrel but which permit the collar to be disengaged readily from the barrel. Rotation of the rod causes movement of the piston axially of the barrel when the collar is engaged, but the rod can be moved axially without rotation when the collar is disengaged.

Abstract: A container for retaining an article in sterile condition in which the container has a weakened tear line located on an infolded portion of the container wall. When the container is opened along the tear line, the edges around the opening through which the article is withdrawn are sterile.

Abstract: Lower aliphatic dialdehydes have been found to react with human and other animal tissues in the living animal and that treatment of exposed tissue by topical application is useful in converting "wet" gangrene to "dry" gangrene. Treatment is generally by topical application of the dialdehyde diluted, typically, to 1 or 2 percent in a fluent carrier such as water or alcohol.

Abstract: A method and apparatus for treating tumors, both benign and malignant, involving radio frequency heating of the tumor within the body of the animal host, the method comprising precisely locating and monitoring the tumor to be treated and so positioning radio frequency apparatus that sufficient energy is absorbed therefrom by the tumor for a period of time and with intensity sufficient to cause necrosis of said tumor, but without substantially affecting the tissues surrounding said tumor. The preferred apparatus is adapted for connecting the radio frequency treatment equipment to the output of a body scanner or the like such that the exact position and configuration of the tumor can be plotted in terms of rectangular coordinates and the radio frequency equipment can then be directed or focused precisely on the tumor location.

Abstract: Articles having portions of materials with different properties are integrally formed by injection of two different thermoplastic materials simultaneously through separate gates into the same mold wherein the materials fuse or bond together. A plunger for a syringe formed by the process has a rigid shaft and an elastomeric head.

Abstract: A technique in the treatment of tumors in humans utilizing radio frequency electromagnetic radiation to produce necrosis of the tumors by which intensification at the situs of the tumor of a radio frequency field applied across the portion of the body containing the tumor is obtained by positioning a small inductance element preferably in the form of a closed resonant circuit such that the inductance is in or adjacent to the tumor tissue and thus functions to concentrate the field at that location. Alternatively, rather than utilizing a resonant circuit, the inductance can be coupled to the output of the radio frequency generator utilized and applies the radio frequency electromagnetic field.

Abstract: The method of treating tumors by radio frequency heating at the location of the tumor to cause necrosis of the tumor tissue in which hypotension is induced during the treatment.

Abstract: A method of treating tumors, both benign and malignant, such as carcinoma, sarcoma, cysts and avascular lesions, in animals, such as humans, by radio frequency heating at the location of the tumor in the host with intensity and duration sufficient to cause necrosis of the tumor tissue. Substantial damage to the surrounding normal tissue is avoided, as the surrounding normal tissue is cooled by blood flow which carries the heat away to dissipate such heat in those portions of the body not being subjected to heating.