Patents Examined by J. Maynard
  • Patent number: 6478789
    Abstract: The present invention is directed to a wound drain including a plurality of ducts 24, a plurality of lumens 26 and a plurality of portals 28. The ducts 24 provide an entrance for exudate from the wound site into the wound drain. The lumens 26 and ducts 24 provide drainage channels for exudate from the wound site. The portals 28 provide fluid communication between the ducts 24 and the lumens 26. The portals on the wound drain are adapted and arranged to provide uniform suction along the length of the wound drain.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: November 12, 2002
    Assignee: Allegiance Corporation
    Inventors: Stephen R. Spehalski, David Brown
  • Patent number: 6471686
    Abstract: A drug delivery device comprising a holding reservoir, a pump, a delivery reservoir and an outlet, said holding reservoir being connected to said delivery reservoir through said pump by a connection, said pump being operable manually whereby fluid is transferred from the holding reservoir to the delivery reservoir, said delivery reservoir being connected to the outlet through a flow restriction which controls flow to the outlet, said delivery reservoir being resiliently expandable from a minimum volume to a maximum volume whereby the pressure induced on the fluid within the delivery reservoir between a first volume and a second volume provides a generally constant rate of fluid delivery where the first volume is greater than the second volume and wherein the connection between the holding reservoir and the delivery reservoir permits flow only from the holding reservoir to the delivery reservoir while the pressure within the delivery reservoir is less than a maximum pressure, said connection having a control m
    Type: Grant
    Filed: November 4, 1998
    Date of Patent: October 29, 2002
    Inventor: Thomas John Berrigan
  • Patent number: 6355027
    Abstract: Flexible microcatheter having regions of different flexibility integrally and strategically placed along and about the length of a one-piece composite catheter tube. Distally the flexible microcatheter exhibits pronounced flexibility with respect to locations or regions of flexibility located proximally for navigation along tortuous vascular paths. Different regions of flexibility are formed by applying resins of different Shore hardness readings either singularly or in combination along and about a braid which overlies an inner resin layer. The encapsulated braid provides resistance to kinking and bending of the flexible microcatheter as well as providing for torque transmission and pushability along the length of the flexible microcatheter.
    Type: Grant
    Filed: June 9, 1999
    Date of Patent: March 12, 2002
    Assignee: Possis Medical, Inc.
    Inventors: Hieu V. Le, John Edward Morris, Cindy M. Setum, Robert G. Dutcher
  • Patent number: 6319229
    Abstract: Disclosed herein is a compliant catheter balloon with an improved elastic response and reduced longitudinal expansion, and a method of forming the same. The balloon comprises a SEBS block copolymer, which is longitudinally pre-stretched during the balloon manufacture process. In order to control the working length of a balloon on a catheter, at least one adhesive stop is provided on the catheter which prevents adhesive from wicking into the working length of the balloon. Preferably, a pair of thermoset tubings with an outer diameter size close to the size of the inner diameter of the balloon are inserted on the distal portion of the catheter. After the proper placement of the balloon, the adhesive is applied at the balloon's proximal and distal ends. As the adhesive wicks to the balloon, the thermoset tubings will eventually stop the adhesive to prevent further wicking of adhesive into the balloon's working length.
    Type: Grant
    Filed: November 3, 1999
    Date of Patent: November 20, 2001
    Assignee: Medtronic PercuSurge, Inc.
    Inventors: Isaac J. Kim, Juan T. Domingo, Celso J. Bagaoisan
  • Patent number: 6030367
    Abstract: Dimensionally stable plunger rod for use with a plunger in a cartridge or syringe barrel for manual or power-assisted withdrawing of fluid from a site or expelling fluid from the cartridge or syringe barrel having:a plunger rod body with distal end proximal ends;an end disc at the distal end;a threaded member integral with the end disc designed to engage a plunger;a thumb rest at the proximal end;a reinforcing disc at about the longitudinal mid point of the plunger body;a first pair or rectangular radially extending vanes connecting the end and reinforcing discs;a second pair or rectangular radially extending vanes connecting the reinforcing disc and the thumb rest;a first pair of triangular radially extending vanes connecting the end disc and the reinforcing disc; anda second pair of triangular radially extending vanes connecting the reinforcing disc and the thumb rest.
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: February 29, 2000
    Assignee: Bracco Research
    Inventor: Ernest Balestracci