Nathaniel L Tran

US Patent:

8551049, Oct 8, 2013

Filed:

Jun 10, 2011

Appl. No.:

13/157434

Inventors:

Douglas E. Ott - Macon GA, US
Nathaniel V. Tran - Apple Valley MN, US

Assignee:

Lexion Medical, LLC - St. Paul MN

International Classification:

A61M 5/178

US Classification:

60416703, 604 23, 604 26, 60416705

Abstract:

Devices and methods for vacuum-assisted removal of surgically contaminated gas from an insufflated body cavity, the contaminants comprising smoke, aerosols, vapor, mist and the like generated during surgical procedures in order to clear the surgeon's vision of the surgical site and prevent exposure of the surgical staff to the gas. One embodiment of the present invention comprises a series of flow restriction devices to enable stepping down of the flow rate generated by an external vacuum. This reduced flow rate allows safe yet rapid removal of the toxic and vision-obstructing surgical byproducts from the patient's body cavity. The initial flow restriction device may comprise a perforated trocar sleeve in fluid communication with the vacuum source that allows retention of the surgical instrument within the trocar sleeve's inner lumen with concurrent smoke removal. A series of additional flow restriction devices located downstream of the perforated sleeve's intake ports are employed to safely limit the flow rate to a manageable and known value.

US Patent:

8551050, Oct 8, 2013

Filed:

Jun 10, 2011

Appl. No.:

13/157561

Inventors:

Douglas E. Ott - Macon GA, US
Nathaniel V. Tran - Apple Valley MN, US

Assignee:

Lexion Medical, LLC - St. Paul MN

International Classification:

A61M 5/178

US Classification:

60416703, 604 23, 604 26, 60416705

Abstract:

Devices and methods for vacuum-assisted removal of surgically contaminated gas from an insufflated body cavity, the contaminants comprising smoke, aerosols, vapor, mist and the like generated during surgical procedures in order to clear the surgeon's vision of the surgical site and prevent exposure of the surgical staff to the gas. One embodiment of the present invention comprises a series of flow restriction devices to enable stepping down of the flow rate generated by an external vacuum. This reduced flow rate allows safe yet rapid removal of the toxic and vision-obstructing surgical byproducts from the patient's body cavity. The initial flow restriction device may comprise a perforated trocar sleeve in fluid communication with the vacuum source that allows retention of the surgical instrument within the trocar's inner lumen with concurrent smoke removal. The flow rate is infinitely variable, adjustable and selectable using a flow control adjuster comprising a smoothly varying orifice.

US Patent:

20140180198, Jun 26, 2014

Filed:

Dec 24, 2012

Appl. No.:

13/694689

Inventors:

Douglas E. Ott - Macon GA, US
Steven Williams - St. Paul MN, US
Nathaniel Tran - Lakeville MI, US

International Classification:

A61M 13/00

US Classification:

604 24

Abstract:

A fail-safe insufflation device having a thermal cutoff for interrupting power to an electrical heater to prevent overheating of insufflation gas wherein the thermal cutoff operates independent of a temperature control system to provide electrical shutdown of an electrical heater in response to a hostile temperature condition of the insufflation gas or a hostile temperature condition proximate the electrical heater.