Mark D Christensen

US Patent:

20100087852, Apr 8, 2010

Filed:

Mar 14, 2008

Appl. No.:

12/450084

Inventors:

Michael L. Cheatham - Orlando FL, US
Perry W. Croll - Salt Lake City UT, US
Timothy R. Wolfe - Salt Lake City UT, US
Marshall T. Denton - Salt Lake City UT, US
J. Michael Brown - Salt Lake City UT, US
Mark A. Christensen - Salt Lake City UT, US

International Classification:

A61B 17/08
A61B 1/00

US Classification:

606213, 600184

Abstract:

Described is an apparatus () adapted to temporarily close a surgical access opening () to a patient's body cavity (). The apparatus includes a base () that is disposed around a perimeter of the opening, and a cap () that typically provides resealable access through the opening. The base generally forms an air-resistant seal to the patient's skin. In certain embodiments, the cap may be removable from the base. The base typically includes structure () configured to permit suction to be applied effective to remove undesired fluids from the body cavity. A cap is adapted to change in size to accommodate expansion and contraction of viscera.

US Patent:

54546257, Oct 3, 1995

Filed:

Apr 18, 1994

Appl. No.:

8/229361

Inventors:

Mark Z. Christensen - Aurora CO
Ralph E. Williams - Littleton CO

Assignee:

Kloppenburg & Co. - Englewood CO

International Classification:

B60P 0134

US Classification:

298 18

Abstract:

A portable ice cart provides both elevation adjustment and tilt adjustment for the ice hopper. The ice cart includes a support frame that allows the ice hopper to be tilted to any of a plurality of orientations about a horizontal axis, and a scissors linkage for supporting the support frame at an adjustable elevation above the base of the cart. A retractable spring-loaded pin is used to lock the ice hopper in place after the desired orientation has been reached. The elevation of the ice hopper can be raised by pumping a foot pedal that pressurizes a hydraulic cylinder and extends the scissors linkage.

US Patent:

53761081, Dec 27, 1994

Filed:

May 20, 1993

Appl. No.:

8/065258

Inventors:

Kenneth A. Collins - Neutral Bay, AU
Mark Christensen - Parker CO

Assignee:

Telectronics Pacing Systems, Inc. - Englewood CO

International Classification:

A61N 105

US Classification:

607115

Abstract:

An implantable lead fixation apparatus, including two suture collars connected by a flexible retaining member of predetermined length, is provided for anchoring an elongate cylindrical electrode lead to a patient's body. Each suture collar comprises a flexible annular member having a central lumen that is adapted to enclose the lead. The suture collars each include provision for securing the lead against longitudinal movement of the lead with respect to the collar, and provision for anchoring the collar to the patient's body. The suture collars are positioned relatively proximally and distally with respect to the lead, and are secured on the lead with the proximal suture collar being separated from the distal suture collar by slightly less than the length of the retaining member. Then, the lead fixation apparatus is positioned with respect to the patient's body and secured to the body so that the proximal suture collar is located at a selected distance less than the predetermined distance from, and at an angular orientation to, the distal suture collar to provide slack in both the lead and the retaining member in order to accommodate patient movement without applying dislocating forces to a distal portion of the lead.