1
Jeffrey R Oberlin, Christopher L Johnson, David A Dunlap: Articulated surgical instrument with improved firing mechanism. Richard Allan Medical, Howard & Howard, August 25, 1998: US05797537 (882 worldwide citation)

This invention provides articulated surgical instruments for use in laparoscopic surgical procedures including, in general, a handle, an elongated shaft, and an articulated tip. A gap extends longitudinally between the shaft and the tip. The instruments further include a flexible compression drive m ...


2
Christopher L Johnson, David A Dunlap: Linear stapling instrument with improved staple cartridge. Imagyn Medical Technologies, Howard & Howard, January 4, 2000: US06010054 (851 worldwide citation)

This invention provides a linear stapling instrument for use in surgical procedures including, inter alia, a staple housing. The housing includes a plurality of staple openings and a plurality of staples disposed in the staple openings. The housing further includes a plurality of staple drivers. The ...


3
David A Dunlap, Douglas J Medema, Hugh Melling, Jeffrey W Zerfas: Trocar assembly. Richard Allan Medical, Leydig Voit & Mayer, July 23, 1996: US05538509 (166 worldwide citation)

A trocar for use in surgical procedures including a cannula for maintaining a sealed working channel in a body wall and an obturator which creates the working channel through the body wall while protecting patients and medical personnel from harm is disclosed. A cannula converter which can be employ ...


4
David A Dunlap, Douglas J Medema, Hugh Melling, Jeffrey W Zerfas: Trocar assembly. Imagyn Medical Technologies California, Howard & Howard, August 24, 1999: US05941852 (52 worldwide citation)

A trocar for use in surgical procedures including a cannula for maintaining a sealed working channel in a body wall and an obturator which creates the working channel through the body wall while protecting patients and medical personnel from harm is disclosed. A cannula converter which can be employ ...


5
David A Dunlap, Douglas J Medema, Hugh Melling, Jeffrey W Zerfas: Trocar assembly. UroHealth, January 5, 1999: US05855566 (16 worldwide citation)

A trocar for use in surgical procedures including a cannula for maintaining a sealed working channel in a body wall and an obturator which creates the working channel through the body wall while protecting patients and medical personnel from harm is disclosed. A cannula converter which can be employ ...


6
David A Dunlap: Sleeve damper apparatus. Jefco Laboratories, Merriam Marshall & Bicknell, November 8, 1983: US04413613 (5 worldwide citation)

A damper device insertable into a slotted duct or flue without cutting completely through the duct, including a sleeve conforming to the duct cross-section and adapted for insertion through the slot to nest within the un-cut duct portion. A damper plate with stiffener ribs is rotatably mounted withi ...


7
James C Rush, James N Ludwig, Karl Heinz Mueller, Steven C Gortsema, David A Dunlap, Danhui Luo, Debajit Guha: Post and beam furniture system. Price Heneveld Cooper Dewitt & Litton, September 12, 2002: US20020124478-A1

A post and beam furniture system includes a plurality of overhead beams, and a plurality of vertical posts having at least one outwardly extending flange with a single slot extending vertically along the end face of the flange. Beam-to-post connectors are attached to the opposite ends of the beams, ...