Patents Assigned to Northgate Technologies Incorporated
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Patent number: 6528739Abstract: A fluid sensor apparatus for monitoring fluid in a container. The fluid sensor apparatus comprises a housing having an upper hook extending from a top thereof to allow the housing to be suspended. A lower hook is telescopically received in the housing and extends from a bottom thereof. The lower hook is adapted for suspending a fluid container therefrom. The lower hook is movable relative to the housing. A cam member is located inside the housing and is movable relative thereto. The cam member is coupled to an upper end of the lower hook. The cam member has a stepped gradation. A biasing member is coupled between a lower shoulder of the cam member and the housing. The biasing member is adapted to apply a force against the cam member to cause the cam member to be biased upward relative to the housing to an upper position. A switch is coupled to the housing and has an actuator located in relation to the stepped gradation of the cam member.Type: GrantFiled: August 29, 2000Date of Patent: March 4, 2003Assignee: Northgate Technologies IncorporatedInventors: Albert Nowosielski, Russell Kuzelka, Charles Zander, David Cho, Raymond Jacobs
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Patent number: 6121555Abstract: A fluid sensor apparatus for monitoring fluid in a container. The fluid sensor apparatus comprises a housing having an upper hook extending from a top thereof to allow the housing to be suspended. A lower hook is telescopically received in the housing and extends from a bottom thereof. The lower hook is adapted for suspending a fluid container therefrom. The lower hook is movable relative to the housing. A cam member is located inside the housing and is movable relative thereto. The cam member is coupled to an upper end of the lower hook. The cam member has a stepped gradation. A biasing member is coupled between a lower shoulder of the cam member and the housing. The biasing member is adapted to apply a force against the cam member to cause the cam member to be biased upward relative to the housing to an upper position. A switch is coupled to the housing and has an actuator located in relation to the stepped gradation of the cam member.Type: GrantFiled: September 3, 1999Date of Patent: September 19, 2000Assignee: Northgate Technologies IncorporatedInventors: Albert Nowosielski, Russell Kuzelka, Charles Zander, David Cho, Raymond Jacobs
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Patent number: 5782829Abstract: An improved electrode assembly for a resectoscope and methods for use thereof. The electrode assembly includes at least one electrical lead that connects at a proximal end via a handle of the resectoscope to an electrosurgical generator to receive electrical power. The electrode assembly further includes an electrode tip at a distal end. The electrode tip has a non-rotating, relatively flat, working surface that extends in a longitudinal direction. The tip can be used for ablation or coagulation by using the working surface. The tip includes an edge that can be used for cutting. The working surface includes a pattern that enhances generation of a current therefrom. The electrode tip is versatile so that the same tip can be used for cutting, vaporizing, ablating, and coagulating.Type: GrantFiled: December 6, 1995Date of Patent: July 21, 1998Assignee: Northgate Technologies IncorporatedInventors: Philip Swiantek, James Muehleisen, Peter A. Manzie, Robert Baker
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Patent number: 5605545Abstract: A tubing set and method for use with a system for providing pressurized fluid from a fluid source to a surgical site. The system includes a fluid source, a length of flexible tubing having one end connected to the fluid source and another end connected to a surgical instrument, and a peristaltic type pump into which a middle portion of flexible tubing is positioned so that the peristaltic type pump can pump fluid from the source to the surgical instrument by bearing on the exterior of the tubing. The improved tubing set also includes a by-pass section of tubing connected between the tubing inlet and the tubing outlet in parallel with the middle portion of the flexible tubing. The by-pass section provides pressure relief to the system so that pressure in the tubing will not build up distally of the location of the peristaltic pump.Type: GrantFiled: May 5, 1994Date of Patent: February 25, 1997Assignee: Northgate Technologies IncorporatedInventors: Albert Nowosielski, Robert Mantell, Peter Manzie, Charles Zander
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Patent number: D385351Type: GrantFiled: December 6, 1995Date of Patent: October 21, 1997Assignee: Northgate Technologies IncorporatedInventors: Peter A. Manzie, Robert Baker