Patents by Inventor Philip L. Wolf

Philip L. Wolf 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).

  • Safety shielded, reusable trocar
    Publication number: 20010029387
    Abstract: A safety shielded, reusable trocar consisting of a trocar cannula subassembly, a safety shield control mechanism, and a separate obturator subassembly. The trocar cannula subassembly includes an outer cannula attached to a main housing having a central bore in which a spring biased, inner cannula is slidably and removably inserted, and an upper housing, removably secured to the main housing, having a central bore which is aligned longitudinally with the bore of the main housing and in which sealing means is removably secured. The obturator subassembly includes an elongated obturator having a replaceable and rotatable knife, an elongated shaft, an arcuate shaped cap, and which extends through the upper housing, sealing means, main housing, inner cannula, and outer cannula.
    Type: Application
    Filed: April 4, 2001
    Publication date: October 11, 2001
    Inventors: Philip L. Wolf, William T. Cox
  • Safety shielded reusable trocar
    Patent number: 6238407
    Abstract: A safety shielded, reusable trocar consisting of a trocar cannula subassembly, a safety shield control mechanism, and a separate obturator subassembly. The trocar cannula subassembly includes an outer cannula attached to a main housing having a central bore in which a spring biased, inner cannula is slidably and removably inserted, and an upper housing, removably secured to the main housing, having a central bore which is aligned longitudinally with the bore of the main housing and in which a seal is removably secured. The obturator subassembly includes an elongated obturator having a replaceable and rotatable knife, an elongated shaft, an arcuate shaped cap, and which extends through the upper housing, seal, main housing, inner cannula, and outer cannula. The safety shield control mechanism, located in the main housing and removably engaged with the inner cannula, allows for positive and easily verifiable engagement and disengagement of the inner cannula as a safety shield for the obturator knife.
    Type: Grant
    Filed: October 11, 1995
    Date of Patent: May 29, 2001
    Assignee: NeoSurg Technologies, Inc.
    Inventors: Philip L. Wolf, William T. Cox, II
  • Safety shielded, reusable trocar
    Patent number: 6099544
    Abstract: A safety shielded, reusable trocar consisting of a trocar cannula subassembly, a safety shield control mechanism, and a separate obturator subassembly. The trocar cannula subassembly includes an outer cannula attached to a main housing having a central bore in which a spring biased, inner cannula is slidably and removably inserted, and an upper housing, removably secured to the main housing, having a central bore which is aligned longitudinally with the bore of the main housing and in which a sealing assembly is removably secured. The obturator subassembly includes an elongated obturator having a replaceable and rotatable knife, an elongated shaft, an arcuate shaped cap, and which extends through the upper housing, sealing assembly main housing, inner cannula, and outer cannula.
    Type: Grant
    Filed: April 20, 1999
    Date of Patent: August 8, 2000
    Assignee: NeoSurg Technologies, Inc.
    Inventors: Philip L. Wolf, William T. Cox, II
  • Trocar including an obturator with a removable knife
    Patent number: 5810863
    Abstract: An obturator for a trocar having a shaft, pin, and removable knife. The pin mounts to the shaft and secures the knife thereto.
    Type: Grant
    Filed: June 6, 1996
    Date of Patent: September 22, 1998
    Assignee: Moser Medical
    Inventors: Philip L. Wolf, Mark S. Hickman
  • Trocar obturator including a removable knife
    Patent number: 5697947
    Abstract: A safety shielded, reusable trocar consisting of a trocar cannula subassembly, a safety shield control mechanism, and a separate obturator subassembly. The trocar cannula subassembly includes an outer cannula attached to a main housing having a central bore in which a spring biased, inner cannula is slidably and removably inserted, and an upper housing, removably secured to the main housing, having a central bore which is aligned longitudinally with the bore of the main housing and in which sealing means is removably secured. The obturator subassembly includes an elongated obturator having a replaceable and rotatable knife, an elongated shaft, an arcuate shaped cap, and which extends through the upper housing, sealing means, main housing, inner cannula, and outer cannula.
    Type: Grant
    Filed: June 14, 1996
    Date of Patent: December 16, 1997
    Assignee: Invamed, Inc.
    Inventors: Philip L. Wolf, William T. Cox, II