Patents by Inventor Edward A. Tischlinger

Edward A. Tischlinger has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4384406
    Abstract: A combination suture cutting and removing instrument comprising an elongate handle with a head portion extending longitudinally outward from one end thereof. The head portion is curved in a generally crescent configuration with a flat end. A suture cutter blade is positioned across the concave portion of the head and terminates slightly before the flat end which is provided with a "V" shaped notch whereby the flat end may be slipped under the suture to bring the cutter into cutting engagement therewith. After the suture is cut, the "V" shaped notch is positioned around the suture beneath the knot so that upward motion will engage the knot and remove the suture.
    Type: Grant
    Filed: March 5, 1981
    Date of Patent: May 24, 1983
    Assignee: Cordis Corporation
    Inventor: Edward A. Tischlinger
  • Patent number: 4178928
    Abstract: A self injector having a spring powered gun assembly including a plunger rod driven forwardly by a compressed spring which is releasable by a retainer member to fire the plunger rod, and a cartridge assembly connected to said gun assembly, the cartridge assembly comprising a cylindrical shield connected to the gun assembly, a cartridge slidably positioned within the shield and including a cartridge tube with a slidable plunger closing off one end and a flexible diaphragm closing off the other to form a medicament chamber therebetween. A nose piece is affixed to the diaphragm end of the cartridge tube and mounts a cannula on its outside portion in fluid communication with the area on the cannula side of the diaphragm.
    Type: Grant
    Filed: August 10, 1977
    Date of Patent: December 18, 1979
    Inventor: Edward A. Tischlinger
  • Patent number: 4072149
    Abstract: A disposable medicament injector having a cylindrical barrel closed at one end by a slidable plunger and at the other end by a nose cap and diaphragm assembly including a flexible and pierceable wall defining a medicament chamber between the plunger and the flexible wall. A spike is positioned in spaced relation to the flexible wall whereby movement of the plunger will cause the medicament in the medicament chamber to flex the flexible wall of the diaphragm toward the spike which will then pierce the flexible wall to establish fluid communication between the medicament chamber and the area on the other side of the flexible wall.
    Type: Grant
    Filed: August 9, 1976
    Date of Patent: February 7, 1978
    Inventor: Edward A. Tischlinger
  • Patent number: 4059112
    Abstract: A disposable additive syringe having a cylindrical barrel closed at the rear end by a slidable plunger and at the front end by a diaphragm assembly including a flexible and pierceable wall defining a medicament chamber between the plunger and the flexible wall. A cap and spike assembly mounted on the front end of the cylindrical barrel, said spike being positioned so that its end will be spaced from and outside the flexible wall and having a passage therethrough, a cannula extending forwardly from the cap and in fluid communication with the spike, a cylindrical safety guide extending forwardly from the cap and surrounding the cannula, a spike mounted by the safety guide and in fluid communication with the cannula, and a sheath supported by and covering the spike.
    Type: Grant
    Filed: November 19, 1976
    Date of Patent: November 22, 1977
    Inventor: Edward A. Tischlinger
  • Patent number: 4059109
    Abstract: A mixing and dispensing disposable medicament injector having a cylindrical barrel closed at one end by a slidable plunger and at the other end by a first diaphragm assembly including a flexible wall. A second diaphragm assembly is positioned within the barrel intermediate the ends thereof to divide the barrel into two sealed chambers, a first chamber between the plunger and second diaphragm assembly being adapted to contain a liquid and a second chamber between the second diaphragm assembly and the first diaphragm assembly being adapted to contain a medicament in dry form. The second diaphragm assembly has a rupturable flexible wall to allow liquid to flow into the second chamber and the flexible wall in the first diaphragm assembly being rupturable to allow the mixed liquid medicament to be dispersed from the injector through the cannula fluidly connected to the first diaphragm assembly.
    Type: Grant
    Filed: July 27, 1976
    Date of Patent: November 22, 1977
    Inventor: Edward A. Tischlinger
  • Patent number: 4051851
    Abstract: A medicament dispensing unit having a cylindrical barrel closed at one end by a slidable plunger is provided at the other end with a diaphragm assembly including a flexible wall defining a medicament chamber between the plunger and flexible wall. A needle is positioned in spaced relation to the flexible wall whereby movement of the plunger will cause the medicament to flex the flexible wall toward the needle which will then pierce the wall to establish fluid communication between the medicament chamber and the area at the other end of the needle. A finger grip is located on the plunger end of the barrel while a nose cap assembly is affixed to the diaphragm end of the barrel.
    Type: Grant
    Filed: March 31, 1976
    Date of Patent: October 4, 1977
    Inventor: Edward A. Tischlinger
  • Patent number: 4051850
    Abstract: A disposable medicament injector having a cylindrical barrel closed at one end by a slidable plunger and at the other end by a diaphragm assembly including a flexible wall defining a medicament chamber between the plunger and flexible wall. A needle is positioned in spaced relation to the flexible wall whereby movement of the plunger will cause the medicament to flex the flexible wall toward the needle which will then pierce the wall to establish fluid communication between the medicament chamber and the area at the other end of the needle. A finger grip is retained on the plunger end of the glass barrel by the engagement of the inner and outer surfaces of the barrel by a pair of spaced circumferential walls extending from the finger grip. A nose cap assembly is affixed to the diaphragm end of the glass barrel in a similar manner.
    Type: Grant
    Filed: November 21, 1975
    Date of Patent: October 4, 1977
    Inventor: Edward A. Tischlinger
  • Patent number: 3987940
    Abstract: A glass tube and thermoplastic resin finger-grip and nose-forming sleeve syringe body assembly in which, the finger-grip sleeve and the nose-forming sleeve are each cam-stretched onto and frictionally retained on respective opposite ends of a glass tube, which is a section of die-formed glass tubing. Increase in latitude of operable interference fit and stretch is effected by assembling the finger-grip and nose-forming sleeves onto the glass tube while the sleeves are in a heated condition.
    Type: Grant
    Filed: March 18, 1974
    Date of Patent: October 26, 1976
    Assignee: MPL, Inc.
    Inventor: Edward A. Tischlinger
  • Patent number: 3978858
    Abstract: A glass tube and thermoplastic resin finger-grip sleeve assembly in which the finger-grip sleeve is cam-stretched onto and frictionally retained on a glass tube, which is a section of die-formed glass tubing. Increase in latitude of operable interference fit and stretch is effected by assembling the finger-grip sleeve in a heated condition.
    Type: Grant
    Filed: March 18, 1974
    Date of Patent: September 7, 1976
    Assignee: MPL, Inc.
    Inventor: Edward A. Tischlinger
  • Patent number: 3967759
    Abstract: A prefillable or prefilled syringe having a liquid-containment glass tube body section with thermoplastic resin finger-grip sleeve and noseforming sleeve fit thereon in an interference fit, and with the ends of the glass tube being sealed after filling and preferably prior to assembly of one or both the finger-grip sleeve and the nose-forming sleeve, and a method of assembly thereof, the finger-grip sleeve and the nose-forming sleeve being cam-stretched onto and frictionally retained on and along a glass tube, in the form of a section of die-formed glass tubing. Increase in latitude of operable interference fit and stretch is effected by assembling the finger-grip sleeve and the noseforming sleeve in a heated condition, without requiring heating of the glass tube and its prefilled contents.
    Type: Grant
    Filed: March 18, 1974
    Date of Patent: July 6, 1976
    Assignee: MPL, Inc.
    Inventors: Brian E. Baldwin, Edward A. Tischlinger
  • Patent number: 3939833
    Abstract: A cartridge for a prefilled hypodermic syringe of the type sealed at its forward end with a destructible diaphragm is provided with a piston-piston rod assembly in which the piston of resilient material is molded in the form of a hollow cylinder and has an auxiliary short, cup-shaped member of reduced diameter coaxially enclosed within its forward end, and sealed in yieldable engagement with the inner walls of said hollow cylinder by a transverse, annularly-shaped elastic membrane. The piston rod has a forward portion of lateral cross-section smaller than the inner cross-sectional area of the piston and slidably receivable in the latter, and a following portion having a lateral cross-section dimension greater than the inner cross-sectional area of the piston, the junction of the two rod portions forming a forwardly directed shoulder.
    Type: Grant
    Filed: January 15, 1975
    Date of Patent: February 24, 1976
    Assignee: Astra Pharmaceutical Products Inc.
    Inventors: Bengt Eve Hansson, Edward A. Tischlinger
  • Patent number: 3938518
    Abstract: The attachment unit for a spike equipped syringe is composed of first and second tubular portions connected together at their inner ends and extending from such connection in axially aligned relation. The bore of the first tubular portion has at its outer end a cylindrically shaped seat for the hub of the spike, and adjacent to such cylindrical seat a conical seat for the spike, the two seats forming between them an internal shoulder to properly register the spike in such first tubular portion. Connected at its inner end to said connection and enclosed in the inner end of the second tubular portion is a tubular needle mounting, the bore of which is in communication with the bore of the first tubular portion. One end of a needle cannula is secured in liquid-tight relation in the mounting bore and the cannula extends from such mounting and through the bore of the second tubular portion to a point beyond the outer end of such second tubular portion.
    Type: Grant
    Filed: January 15, 1975
    Date of Patent: February 17, 1976
    Assignee: Astra Pharmaceutical Products Inc.
    Inventor: Edward A. Tischlinger