John B Sorensen

Author:

John A. Sorensen

ISBN #:

0780356101

Author:

John A. Sorensen

ISBN #:

0867153059

Author:

John A. Sorensen

ISBN #:

0867153229

Author:

John A. Sorensen

ISBN #:

0867153490

Author:

John A. Sorensen

ISBN #:

0867153784

Author:

John A. Sorensen

ISBN #:

0867154233

Author:

John Sorensen

ISBN #:

0887063322

Author:

John Sorensen

ISBN #:

0887063330

US Patent:

20040197235, Oct 7, 2004

Filed:

Feb 27, 2004

Appl. No.:

10/789864

Inventors:

John Sorensen - Costa Mesa CA, US
Michael Mittelstein - Laguna Niguel CA, US
Soheila Mirhashemi - Laguna Niguel CA, US
Virginia Gordon - Huntington Beach CA, US
Bennett Root - Huntington Beach CA, US
Barbara Peasley - Brea CA, US
John Elias - Buena Park CA, US

Assignee:

Safety Associates, Inc.

International Classification:

B01L011/00
G01N033/03

US Classification:

422/101000, 436/111000, 436/060000, 436/119000

Abstract:

Methods and apparatus for qualitatively or quantitatively determining one or more analytes in matrices such as foods, biological fluids, etc. An embodiment for determination of a single analyte comprises a sample receiving vessel, a first membrane and a reagent-containing well. The prepared sample passes through the first membrane whereby extraneous matter is removed, and a filtrate enters the reagent-containing well to provide a filtrate-reagent admixture from which the analyte may be determined. An embodiment for determination for multiple analytes includes one or more additional membranes in series with the first membrane, each such additional membrane being operative to capture one or more analytes. Each of the additional analytes may then be eluted from the membrane upon which it has been captured, into a separate reagent-containing well to provide eluant-reagent admixture from which each desired analyte may be determined. Formulations for preparation additives are also included. Additionally, there's provided an embodiment of above-described invention for determination of an analyte which is present in a matrix at low (e.g., sub-detectable) levels, wherein the filter of the apparatus is utilized to capture and concentrate the analyte, to provide a filtrate-reagent admixture wherein the analyte is present at detectable concentration.

US Patent:

54376785, Aug 1, 1995

Filed:

Nov 30, 1992

Appl. No.:

7/984229

Inventors:

John T. Sorensen - Costa Mesa CA

Assignee:

Neomedix Corporation - Laguna Niguel CA

International Classification:

A61F 9007

US Classification:

606107

Abstract:

Apparatus for reducing the size of an object disposed in a generally closed fluid medium includes a handpiece having an axis extending from a housing at a proximal end to a probe at an opposing distal end. A reducer at the distal end of the probe is adapted for insertion into the fluid medium where it is rotatable to reduce in size the object. The reducer is configured to create a fluid flow in the fluid medium so that the handpiece can be maintained laterally and axially stationary while the object is moved by the fluid flow into contact with the reducer. An associated method includes the steps of rotating the rotary member at a speed sufficient to reduce the size of the object, and in a manner to produce a flow of the fluid sufficient to move the object into the rotary member.

US Patent:

61171492, Sep 12, 2000

Filed:

Feb 11, 1999

Appl. No.:

9/248421

Inventors:

John T. Sorensen - Costa Mesa CA
Michael Mittelstein - Laguna Niguel CA
Soheila Mirhashemi - Laguna Niguel CA

Assignee:

Optex Ophthalmologics, Inc. - San Juan Capistrano CA

International Classification:

A61F 900

US Classification:

606166

Abstract:

A system and method for reducing and removing and ophthalmic lens of a mammalian eye. The system includes a rotary lens-reducing probe device of either straight or curved configuration, the probe device comprising a tubular outer sheath through which a rotatable drive shaft extends. A rotating lens-reducing head member is positioned on the distal end of the drive shaft. The head member is configured and constructed to draw a flow of fluid and lens matter into contact therewith, thereby facilitating complete reduction of the entire lens without requiring significant axial (i. e. , longitudinal) movement of the probe within the lens capsule. The distal portion of the tubular sheath is preferably configured to shield a portion of the lens-reducing head, during operation, to avoid inadvertent damage to lens capsule. Also, the distal portion of the sheath may be aimed or positioned to direct the flow of fluid and lens matter created by the rotating head in a preferred flow path within the lens capsule. The device may incorporate infusion and/or aspiration for infusing and/or withdrawing fluid and/or debris into/from the eye.

US Patent:

49940252, Feb 19, 1991

Filed:

Aug 29, 1989

Appl. No.:

7/400212

Inventors:

Paul DeAntonio - Westminster CA
Kenneth G. Mayhan - Irvine CA
John T. Sorensen - Costa Mesa CA

Assignee:

Baxter International Inc. - Deerfield IL

International Classification:

A61M 100

US Classification:

604 28

Abstract:

Disclosed is a method for dissolving cholesterol-rich calculi, most preferably gallstones in vivo, comprising contacting the calculus with a fluid compound of the formula R-X, R having 2 to 4 carbon atoms with substituents consisting of hydrogen of halogen, X being halogen, and wherein if X is fluorine, at least one substituent is selected from the group consisting of hydrogen, chlorine, bromine, or iodine. Usually R-X is 2-bromo-2-chloro-1,1,1-trifluoroethane (also referred to as Halothane. ) Other compounds of particular interest are 2-chloro-1,2,-dibromo-1,1,2-trifluoroethane, 1-bromo-2-chloro-1,1,2-trifluoroethane, 2,3-dibromo-1,1,1-trifluoropropane, 2-iodo-1,1,1-trifluoroethane, 1,2-dichloro-1,1-difluoroethane, 1,1,2-trichloro-2,3,3-trifluorocyclobutane, hexafluoro-1,1,3,4,-tetrachlorobutane, 1,1,1-trichlorotrifluoroethane, and 1,2-dibromo-tetrafluoroethane. Furthermore, Halothane and MtBE in combination effectively dissolve cholesterol-rich calculi. Finally, dissolution can be enhanced by adding to the dissolution solvent up to about 50 percent by volume of a lower alcohol.

US Patent:

52249301, Jul 6, 1993

Filed:

Feb 14, 1992

Appl. No.:

7/836080

Inventors:

Edmund E. Spaeth - Orange CA
Alexander S. Borsanyi - Newport Beach CA
Alex Bowie - Irvine CA
John T. Sorensen - Costa Mesa CA

Assignee:

EndoMedix Corporation - Irvine CA

International Classification:

A61B 1734

US Classification:

604 33

Abstract:

Devices and a system for passing instruments into a body cavity and/or for containing, manipulating, treating and removing matter from the body cavity, through a minimal access incision typically no greater than 1 cm in length. In one embodiment, the device of the invention includes an upper valving member with a plurality of interchangeable lower trocar members such as a) a short trocar member of 0. 5-0. 3 inches in length, b) a long trocar member greater than 3. 0 inches in length and/or c) a trocar member having a protective cage disposed about its distal end attachable thereto. The lower trocar members are insertable into the body cavity. Further, in accordance with the system of the present invention, various instruments are independently insertable through the upper valving member and lower trocar portions of the device to perform various functions. The instruments which are independently insertable through the upper valving portion and lower trocar portions of the device include (a) a piercing stylet, (b) a tissue containment sac and/or containment sac introducer device and (c) a debulking or morcellizing instrument.

US Patent:

58714928, Feb 16, 1999

Filed:

May 31, 1996

Appl. No.:

8/658846

Inventors:

John T. Sorensen - Costa Mesa CA

Assignee:

Optex Ophthalmologics, Inc. - San Juan Capistrano CA

International Classification:

A61F 900

US Classification:

606166

Abstract:

A system and method for reducing and removing and ophthalmic lens of a mammalian eye. The system includes a rotary lens-reducing probe device of either straight or curved configuration, said probe device comprising a tubular outer sheath through which a rotatable drive shaft extends. A rotating lens-reducing head member is positioned on the distal end of the drive shaft. The head member is configured and constructed to draw a flow of fluid and lens matter into contact therewith, thereby facilitating complete reduction of the entire lens without requiring significant axial (i. e. , longitudinal) movement of the probe within the lens capsule. The distal portion of the tubular sheath is preferably configured to shield a portion of the lens-reducing head, during operation, to avoid inadvertent damage to lens capsule. Also, the distal portion of the sheath may be aimed or positioned to direct the flow of fluid and lens matter created by the rotating head in a preferred flow path within the lens capsule. The device may incorporate means for infusing and/or withdrawing fluid and/or debris into/from the eye.

US Patent:

56906412, Nov 25, 1997

Filed:

Apr 11, 1995

Appl. No.:

8/421421

Inventors:

John T. Sorensen - Costa Mesa CA
Michael Mittelstein - Laguna Niguel CA
Soheila Mirhashemi - Laguna Niguel CA

Assignee:

Optex Ophthalmologics, Inc. - San Juan Capistrano CA

International Classification:

A61F 900

US Classification:

606107

Abstract:

A system and method for reducing and removing and ophthalmic lens of a mammalian eye. The system includes a rotary lens-reducing probe device of either straight or curved configuration, said probe device comprising a tubular outer sheath through which a rotatable drive shaft extends. A rotating lens-reducing head member is positioned on the distal end of the drive shaft. The head member is configured and constructed to draw a flow of fluid and lens matter into contact therewith, thereby facilitating complete reduction of the entire lens without requiring significant axial (i. e. , longitudinal) movement of the probe within the lens capsule. The distal portion of the tubular sheath is preferably configured to shield a portion of the lens-reducing head, during operation, to avoid inadvertent damage to lens capsule. Also, the distal portion of the sheath may be aimed or positioned to direct the flow of fluid and lens matter created by the rotating head in a preferred flow path within the lens capsule. The device may incorporate means for infusing and/or withdrawing fluid and/or debris into/from the eye.

US Patent:

53543033, Oct 11, 1994

Filed:

Feb 14, 1992

Appl. No.:

7/836087

Inventors:

Edmund E. Spaeth - Orange CA
Alexander S. Borsanyi - Newport Beach CA
Alex Bowie - Irvine CA
John T. Sorensen - Costa Mesa CA

Assignee:

EndoMedix Corporation - Irvine CA

International Classification:

A61B 1722

US Classification:

606128

Abstract:

Containment sacs insertable into a body cavity through a minimal access incision for purposes of containing, manipulating, treating and/or extracting material from the body cavity. The sac may comprise a flexible sac body having at least one opening thereinto and a resilient or spring loaded rim member disposed about the opening to urge the opening to an open configuration when deployed in the body cavity. The containment sac may be further utilized in combination with a dedicated introducer sheath through which the containment sac may be inserted and extracted. A valving member may be positioned on the introducer sheath to prevent escape of gas from a pressurized body cavity such as a pneumoperitoneal. The containment sac may incorporate a grasping member whereby the containment sac may be grasped and inserted using a standard forecep/grasper instrument. Alternatively, the containment sac may be attached to an elongate rod member usable to insert and extract the containment sac.