Patents by Inventor Randolph Lehn

Randolph Lehn 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: 10959729
    Abstract: The present disclosure relates to surgical fastener applying apparatus for sequentially applying a plurality of surgical fasteners to body tissue. The surgical fastener applying apparatus includes a replaceable cartridge assembly receivable in a distal end portion of a cartridge receiving half-section, the cartridge assembly including a safety lockout pivotably disposed along the upper surface of the cartridge assembly and movable from an unlocked orientation permitting assembly of an anvil half-section to the cartridge receiving half-section, to a locked orientation preventing assembly of the anvil half-section to the cartridge receiving-half section.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: March 30, 2021
    Assignee: COVIDIEN LP
    Inventors: Karl H. Ehrenfels, David Ivanko, Randolph Lehn, Roberto Pedros, Csaba L. Rethy, Frank J. Viola
  • Publication number: 20190159777
    Abstract: The present disclosure relates to surgical fastener applying apparatus for sequentially applying a plurality of surgical fasteners to body tissue. The surgical fastener applying apparatus includes a replaceable cartridge assembly receivable in a distal end portion of a cartridge receiving half-section, the cartridge assembly including a safety lockout pivotably disposed along the upper surface of the cartridge assembly and movable from an unlocked orientation permitting assembly of an anvil half-section to the cartridge receiving half-section, to a locked orientation preventing assembly of the anvil half-section to the cartridge receiving-half section.
    Type: Application
    Filed: February 1, 2019
    Publication date: May 30, 2019
    Inventors: Karl H. Ehrenfels, David Ivanko, Randolph Lehn, Roberto Pedros, Csaba L. Rethy, Frank J. Viola
  • Patent number: 10231733
    Abstract: The present disclosure relates to surgical fastener applying apparatus for sequentially applying a plurality of surgical fasteners to body tissue. The surgical fastener applying apparatus includes a replaceable cartridge assembly receivable in a distal end portion of a cartridge receiving half-section, the cartridge assembly including a safety lockout pivotably disposed along the upper surface of the cartridge assembly and movable from an unlocked orientation permitting assembly of an anvil half-section to the cartridge receiving half-section, to a locked orientation preventing assembly of the anvil half-section to the cartridge receiving-half section.
    Type: Grant
    Filed: August 2, 2016
    Date of Patent: March 19, 2019
    Assignee: Covidien LP
    Inventors: Karl H. Ehrenfels, David Ivanko, Randolph Lehn, Roberto Pedros, Csaba L. Rethy, Frank J. Viola
  • Publication number: 20160338702
    Abstract: The present disclosure relates to surgical fastener applying apparatus for sequentially applying a plurality of surgical fasteners to body tissue. The surgical fastener applying apparatus includes a replaceable cartridge assembly receivable in a distal end portion of a cartridge receiving half-section, the cartridge assembly including a safety lockout pivotably disposed along the upper surface of the cartridge assembly and movable from an unlocked orientation permitting assembly of an anvil half-section to the cartridge receiving half-section, to a locked orientation preventing assembly of the anvil half-section to the cartridge receiving-half section.
    Type: Application
    Filed: August 2, 2016
    Publication date: November 24, 2016
    Inventors: Karl H. Ehrenfels, David Ivanko, Randolph Lehn, Roberto Pedros, Csaba L. Rethy, Frank J. Viola
  • Publication number: 20080116244
    Abstract: The present disclosure relates to surgical fastener applying apparatus for sequentially applying a plurality of surgical fasteners to body tissue. The surgical fastener applying apparatus includes a replaceable cartridge assembly receivable in a distal end portion of a cartridge receiving half-section, the cartridge assembly including a safety lockout pivotably disposed along the upper surface of the cartridge assembly and movable from an unlocked orientation permitting assembly of an anvil half-section to the cartridge receiving half-section, to a locked orientation preventing assembly of the anvil half-section to the cartridge receiving-half section.
    Type: Application
    Filed: January 15, 2008
    Publication date: May 22, 2008
    Inventors: Csaba Rethy, Karl Ehrenfels, Roberto Pedros, David Ivanko, Randolph Lehn, Frank Viola
  • Publication number: 20080041916
    Abstract: A surgical stapling device particularly suited for endoscopic procedures is described. The device includes a handle assembly and an elongated body extending distally from the handle assembly. The distal end of the elongated body is adapted to engage a disposable loading unit. A control rod having a proximal end operatively connected to the handle assembly includes a distal end extending through the elongated body. A control rod locking member is provided to prevent movement of the control rod until the disposable loading unit is fully secured to the elongated body of the stapling device.
    Type: Application
    Filed: October 15, 2007
    Publication date: February 21, 2008
    Inventors: Keith Milliman, Frank Viola, Joseph Orban, Randolph Lehn
  • Publication number: 20070125828
    Abstract: The present disclosure relates to surgical fastener applying apparatus for sequentially applying a plurality of surgical fasteners to body tissue. The surgical fastener applying apparatus includes a replaceable cartridge assembly receivable in a distal end portion of a cartridge receiving half-section, the cartridge assembly including a safety lockout pivotably disposed along the upper surface of the cartridge assembly and movable from an unlocked orientation permitting assembly of an anvil half-section to the cartridge receiving half-section, to a locked orientation preventing assembly of the anvil half-section to the cartridge receiving-half section.
    Type: Application
    Filed: January 29, 2007
    Publication date: June 7, 2007
    Inventors: Csaba Rethy, Karl Ehrenfels, Roberto Pedros, David Ivanko, Randolph Lehn, Frank Viola
  • Publication number: 20070119900
    Abstract: An improved surgical fastener applying apparatus includes a cartridge half-section and an anvil half-section with the cartridge and anvil half-sections being relatively movable from an unclamped position to a fully clamped position. The apparatus includes a replaceable staple cartridge assembly having a plurality of surgical staples and a pivotably mounted safety lock-out. The safety lock-out is pivotable between an initial position in which a relative movement of the cartridge and anvil half-sections to the fully clamped position is permitted and a blocking position in which a relative movement of the cartridge and anvil half-sections to return them to their fully clamped position after the plurality of staples have been at least partially fired is prevented. The apparatus further includes a pivotably mounted firing lever for moving a pair of camming surfaces longitudinally.
    Type: Application
    Filed: January 29, 2007
    Publication date: May 31, 2007
    Inventors: Karl Ehrenfels, David Ivanko, Randolph Lehn, Roberto Pedros, Csaba Rethy, Frank Viola
  • Publication number: 20070119901
    Abstract: An improved surgical fastener applying apparatus includes a cartridge half-section and an anvil half-section with the cartridge and anvil half-sections being relatively movable from an unclamped position to a fully clamped position. The apparatus includes a replaceable staple cartridge assembly having a plurality of surgical staples and a pivotably mounted safety lock-out. The safety lock-out is pivotable between an initial position in which a relative movement of the cartridge and anvil half-sections to the fully clamped position is permitted and a blocking position in which a relative movement of the cartridge and anvil half-sections to return them to their fully clamped position after the plurality of staples have been at least partially fired is prevented. The apparatus further includes a pivotably mounted firing lever for moving a pair of camming surfaces longitudinally.
    Type: Application
    Filed: January 29, 2007
    Publication date: May 31, 2007
    Inventors: Karl Ehrenfels, David Ivanko, Randolph Lehn, Roberto Pedros, Casaba Rethy, Frank Viola
  • Publication number: 20060255090
    Abstract: A surgical stapling device particularly suited for endoscopic procedures is described. The device includes a handle assembly and an elongated body extending distally from the handle assembly. The distal end of the elongated body is adapted to engage a disposable loading unit. A control rod having a proximal end operatively connected to the handle assembly includes a distal end extending through the elongated body. A control rod locking member is provided to prevent movement of the control rod until the disposable loading unit is fully secured to the elongated body of the stapling device.
    Type: Application
    Filed: July 19, 2006
    Publication date: November 16, 2006
    Inventors: Keith Milliman, Frank Viola, Joseph Orban, Randolph Lehn
  • Publication number: 20060151569
    Abstract: An improved surgical fastener applying apparatus includes a cartridge half-section and an anvil half-section with the cartridge and anvil half-sections being relatively movable from an unclamped position to a fully clamped position. The apparatus includes a replaceable staple cartridge assembly having a plurality of surgical staples and a pivotably mounted safety lock-out. The safety lock-out is pivotable between an initial position in which a relative movement of the cartridge and anvil half-sections to the fully clamped position is permitted and a blocking position in which a relative movement of the cartridge and anvil half-sections to return them to their fully clamped position after the plurality of staples have been at least partially fired is prevented. The apparatus further includes a pivotably mounted firing lever for moving a pair of camming surfaces longitudinally.
    Type: Application
    Filed: February 16, 2006
    Publication date: July 13, 2006
    Inventors: Karl Ehrenfels, David Ivanko, Randolph Lehn, Roberto Pedros, Csaba Rethy, Frank Viola
  • Publication number: 20060081678
    Abstract: An improved surgical fastener applying apparatus includes a cartridge half-section and an anvil half-section with the cartridge and anvil half-sections being relatively movable from an unclamped position to a fully clamped position. The apparatus includes a replaceable staple cartridge assembly having a plurality of surgical staples and a pivotably mounted safety lock-out. The safety lock-out is pivotable between an initial position in which a relative movement of the cartridge and anvil half-sections to the fully clamped position is permitted and a blocking position in which a relative movement of the cartridge and anvil half-sections to return them to their fully clamped position after the plurality of staples have been at least partially fired is prevented. The apparatus further includes a pivotably mounted firing lever for moving a pair of camming surfaces longitudinally.
    Type: Application
    Filed: December 2, 2005
    Publication date: April 20, 2006
    Inventors: Karl Ehrenfels, David Ivanko, Randolph Lehn, Roberto Pedros, Csaba Rethy, Frank Viola
  • Publication number: 20060049229
    Abstract: A surgical stapling device particularly suited for endoscopic procedures is described. The device includes a handle assembly and an elongated body extending distally from the handle assembly. The distal end of the elongated body is adapted to engage a disposable loading unit. A control rod having a proximal end operatively connected to the handle assembly includes a distal end extending through the elongated body. A control rod locking member is provided to prevent movement of the control rod until the disposable loading unit is fully secured to the elongated body of the stapling device.
    Type: Application
    Filed: July 20, 2005
    Publication date: March 9, 2006
    Inventors: Keith Milliman, Frank Viola, Joseph Orban, Randolph Lehn
  • Publication number: 20050222616
    Abstract: The present disclosure relates to surgical fastener applying apparatus for sequentially applying a plurality of surgical fasteners to body tissue. The surgical fastener applying apparatus includes a replaceable cartridge assembly receivable in a distal end portion of a cartridge receiving half-section, the cartridge assembly including a safety lockout pivotably disposed along the upper surface of the cartridge assembly and movable from an unlocked orientation permitting assembly of an anvil half-section to the cartridge receiving half-section, to a locked orientation preventing assembly of the anvil half-section to the cartridge receiving-half section.
    Type: Application
    Filed: March 19, 2003
    Publication date: October 6, 2005
    Inventors: Csaba Rethy, Karl Ehrenfels, Roberto Pedros, David Ivanko, Randolph Lehn, Frank Viola
  • Publication number: 20050067460
    Abstract: A surgical stapling device particularly suited for endoscopic procedures is described. The device includes a handle assembly and an elongated body extending distally from the handle assembly. The distal end of the elongated body is adapted to engage a disposable loading unit. A control rod having a proximal end operatively connected to the handle assembly includes a distal end extending through the elongated body. A control rod locking member is provided to prevent movement of the control rod until the disposable loading unit is fully secured to the elongated body of the stapling device.
    Type: Application
    Filed: November 5, 2004
    Publication date: March 31, 2005
    Inventors: Keith Milliman, Frank Viola, Joseph Orban, Randolph Lehn
  • Patent number: 6436054
    Abstract: A biopsy system is provided including a housing and a biopsy instrument operatively associated with the housing and configured and dimensioned to remove a tissue sample from a patient. A firing module is included that is detachably engageable with the housing and operatively associated with the biopsy instrument to facilitate selective rapid advancement of at least a portion of the biopsy instrument toward a targeted location with the patient. The biopsy instrument includes a tissue receiving portion. The system may include an indexing assembly disposed within the housing and configured to cooperate with the biopsy instrument to selectively orient the tissue receiving portion. The indexing assembly may include a manual gearing assembly configured for selective orientation of the tissue receiving portion. The system may include a linear advancement control assembly disposed within the housing and configured to effect linear actuation of a tubular knife member.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: August 20, 2002
    Assignee: United States Surgical Corporation
    Inventors: Frank Viola, Csaba L. Rethy, David Ivanko, Scott Martinelli, Bruce Jankowski, Randolph Lehn, James Dale, Arthur Stickney, Karl Ehrenfels