Patents by Inventor David S. Sheridan

David S. Sheridan 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: 6530898
    Abstract: The present invention provides an indicator for visually indicating a pressure level of a fluid in a pressure source. The indicator comprises an inflatable body having a notched section with opposing edge portions that are separated by a gap when the inflatable body is in an uninflated condition. The inflatable body further includes a port for connecting the inflatable body to the pressure source whereby upon inflation of the inflatable body, there is relative movement of the opposing edge portions in a direction so as to decrease the size of the gap and thereby indicate that a predetermined pressure has been reached in the pressure source. The indicator is particularly for indicating whether a predetermined pressure has been reached in an inflation cuff of an endotracheal tube.
    Type: Grant
    Filed: April 20, 2000
    Date of Patent: March 11, 2003
    Assignee: Tyco Healthcare Group LP
    Inventors: Shekhar D. Nimkar, E. David Fink, David S. Sheridan
  • Patent number: 5499625
    Abstract: An airway for both sole esophageal obturator ventilation and for combined endotracheal and esophageal obturator ventilation of a patient. The airway has two lumens one of which has an open distal end and the other of which has a closed distal end. The airway further has an inflatable distal cuff and an inflatable pharyngeal cuff. Communicating with the lumen having the closed distal end is at least one air outlet located in the airway wall between the two inflatable cuffs. To determine the position and orientation of the airway within a patient, the airway is provided with an X-ray opaque stripe that preferably axially extends in the wall, but is interrupted by at least one air outlet between the inflatable cuffs. An X-ray opaque shaft may also be present between the inflatable cuffs and is preferably attached to the wall. The airway may also be provided with monitoring lumens and deflector means in communication with the lumen that has the open distal end.
    Type: Grant
    Filed: January 27, 1994
    Date of Patent: March 19, 1996
    Assignee: The Kendall Company
    Inventors: Michael Frass, Reinhard Frenzer, Gregor Long, John S. Kline, David S. Sheridan, E. David Fink, Anthony N. Toppses
  • Patent number: 5311863
    Abstract: A laser resistant endotracheal tube having a laser resistant layer surrounding the tube for at least a portion of the tube length. The laser resistant layer has a plurality of surface irregularities that are spaced from one another in a plurality of directions and which reflectively scatter laser energy. The laser resistant layer can be applied as an adhesive backed tape which has adhesive on only a portion of the width so that when the tape is spirally wrapped around the tube, the adhesive substantially avoids contact with previously wrapped tape. The tube can be provided with an inflatable cuff that is protected from degradation by an adjacent protective collar and the collar and a portion of the laser resistant layer can be covered with a laser resistant collar. The laser resistant layer can be covered by a cut resistant textile. A laser resistant tape, material and article are also disclosed.
    Type: Grant
    Filed: June 12, 1992
    Date of Patent: May 17, 1994
    Assignee: Sheridan Catheter Corp.
    Inventors: Anthony N. Toppses, David S. Sheridan
  • Patent number: 5207655
    Abstract: A medical-surgical tube having a major lumen defined by an inner periphery of a wall of the tube, an injection lumen within the wall of the tube, and at least one one-way valve in the wall. The valve allows fluid to flow from the injection lumen through an outer or inner periphery of the wall of the tube and prevents return of the fluid back into the injection lumen. The tube can include a plurality of spaced-apart valves. The valve can be a piercing in the wall of the tube which is defined by opposed surfaces resiliently biased against each other and extending from the injection lumen to the outer or inner periphery of the wall of the tube.
    Type: Grant
    Filed: May 15, 1991
    Date of Patent: May 4, 1993
    Assignee: Sheridan Catheter Corp.
    Inventor: David S. Sheridan
  • Patent number: 4990143
    Abstract: A reinforced medico-surgical tube comprising a tube of flexible material, a filament helix coaxial with the tube and disposed between inner and outer peripheries of the tube, and a distal end of the tube, the distal end including a straight-cut or angle-cut axial end face disposed at an angle equal to or other than 90.degree. with respect to a central axis of the tube. The filament helix is separated into pieces at the distal end if the tube is angle-cut such that coils of the filament helix are discontinuous with opposite ends of the the coils adjacent the end face of the distal end. The cut filament end in the case of a straight-cut tube or the cut filament ends in the case of an angle-cut tube confront the axial end face and are separated therefrom by a thin layer of flexible material formed by melting the end face, melting a plastic piece onto the end face or by any other suitable method.
    Type: Grant
    Filed: April 9, 1990
    Date of Patent: February 5, 1991
    Assignee: Sheridan Catheter Corporation
    Inventor: David S. Sheridan
  • Patent number: 4883474
    Abstract: A thoracic catheter is provided with a distal end and a proximal end. The catheter is formed by a tube of flexible material having at least one radial opening at the distal end for draining a body cavity. The proximal end of the tube has a stiffened and sharpened portion whereby pressure applied to the stiffened proximal end from inside the body cavity leads the catheter outwardly through body tissue whereupon the sharpened stiffened proximal end can be severed and the catheter left in situ. The stiffened end is a rigid rod that extends outward of the proximal end of the tube and terminates in the tube short of a cut-off point whereby the tube is severed and the rod and severed proximal end portion is disposed of. The rigid rod may extend a substantial distance inside the tube and be shapable into a grippable shape to assist the user in maneuvering the rod and tube into and through a desired path in the surgical site.
    Type: Grant
    Filed: June 16, 1987
    Date of Patent: November 28, 1989
    Assignee: David S. Sheridan
    Inventors: David S. Sheridan, Ralph D. Alley
  • Patent number: 4852564
    Abstract: Proximal end connector units, by which medico-surgical tubes may be attached to breathing circuits or like fluid flow devices in a manner that mitigates interference with operations being performed on patients intubated with the MS tubes, comprising a straight, rigid, cylindrical distal end portion, a straight, rigid, cylindrical proximal end portion, a central tubular portion joining the distal end portion to the proximal end portion, the central tubular portion being bendable in an arc of at least 180.degree. without diminution of its effective lumen, such proximal end portion, distal end portion and central tubular portion all being integral and formed of the same thin, plastic material, the central tubular portion comprising a plurality of circumferential, angular segments each consisting of a pair of sides that are of unequal length, the central tubular portion being compressed lengthwise by having the shorter side in each segment folded back under its longer side.
    Type: Grant
    Filed: September 14, 1988
    Date of Patent: August 1, 1989
    Assignee: Sheridan Catheter Corp.
    Inventors: David S. Sheridan, Isaac S. Jackson
  • Patent number: 4834723
    Abstract: Thoracic catheters to be implanted in the chest or other body portion of a patient by withdrawal of the proximal end through a secondary incision at a suitable site are improved by having a tapered proximal end portion thereon which has a smoothly contoured nose through which a small lumen extends that permits the surgeon to securely grasp the catheter with a Kelly clamp by having one jaw of the clamp inside the nose lumen and the other jaw on the outside of the nose.
    Type: Grant
    Filed: March 19, 1986
    Date of Patent: May 30, 1989
    Assignee: Sheridan Catheter Corp.
    Inventors: David S. Sheridan, Isaac S. Jackson
  • Patent number: 4593690
    Abstract: Conventional endotracheal tubes are provided with improved proximal end connector units by which the endo tubes may be attached to breathing equipment or like fluid flow devices in a manner that mitigates interference with operations being performed on patients intubated with the endo tubes, such units comprising a straight, rigid, cylindrical distal end portion, a straight, rigid, cylindrical proximal end portion, a central tubular portion joining the distal end portion to the proximal end portion, the central tubular portion being bendable in an arc of at least 180.degree.
    Type: Grant
    Filed: June 28, 1984
    Date of Patent: June 10, 1986
    Assignee: David S. Sheridan
    Inventors: David S. Sheridan, Isaac S. Jackson
  • Patent number: 4459255
    Abstract: The distal ends of plastic catheters are finished to form smoothly rounded tips by forcing the distal ends into a heated cup-like mold and at the same time applying suction to the central lumen of the catheter either via the proximal end of the lumen or via a raised central portion of the mold.
    Type: Grant
    Filed: October 18, 1982
    Date of Patent: July 10, 1984
    Inventor: David S. Sheridan
  • Patent number: 4109659
    Abstract: Urinary evagination catheters comprising a rigid tube and a flexible invaginated hose are provided with a novel stopper arrangement in the ported distal end of the hose that remains closed until the hose is fully everted from the tube at which point it automatically opens to permit fluid flow through the catheter. This eliminates the need for a push rod or the like to evert the hose and permits it to be everted simply by fluid pressure applied to the proximal end of the catheter. Methods for producing the new catheters are described.
    Type: Grant
    Filed: July 19, 1976
    Date of Patent: August 29, 1978
    Assignee: Mallinckrodt, Inc.
    Inventor: David S. Sheridan
  • Patent number: 3996939
    Abstract: A stylet for use in intubating an endotracheal tube, catheter or like medico-surgical tube comprises a bendable metal rod hermetically sealed in a tubular plastic sheath so the rod is closely encircled by the sheath, but so the two can flex longitudinally independently of each other. The ends of the sheath are molded in a smoothly rounded closed shape and it has a frosted finish on its external surface.
    Type: Grant
    Filed: July 22, 1975
    Date of Patent: December 14, 1976
    Assignee: National Catheter Corporation
    Inventors: David S. Sheridan, Isaac S. Jackson
  • Patent number: 3973569
    Abstract: Tracheostomy tubes are provided with means that permits them to be held firmly in proper position upon a person on whom the device is installed. Such means comprises a fixed flange member, a slideable flange member and a plurality of slideable and separately removeable ring members positioned between the fixed and slideable flange members.
    Type: Grant
    Filed: August 6, 1975
    Date of Patent: August 10, 1976
    Assignee: National Catheter Corporation
    Inventors: David S. Sheridan, Isaac S. Jackson