Ension Inc.

Patrick Cahalan

Linda Cahalan

Mark J Gartner

Ali Hussain

Greg Johnson

Brian J Fill

Jeffrey W Speakman

A method of preparing a crosslinked, collagen-based wound care dressing is provided, comprising: (a) immersing a sample of fibrous and/or non-fibrous collagen in a buffered acidic, aqueous solution comprising an alcohol; (b) contacting the collagen in solution with a catalytic component comprising 1-ethyl-3-[3-dimethylaminopropyl]carbodiimide hydrochloride for a time at least sufficient to effect reaction between amino and carboxyl groups present on the collagen and to yield crosslinked collagen that is resistant to pronase degradation; and (c) drying the crosslinked collagen to yield a porous, crosslinked collagen article wherein the porous, crosslinked collagen article demonstrates a pore size of 10-500 microns. Also provided are bioactive collagen medical scaffolds for hernia repair prosthetics and surgical incision closure members, prepared using the method above.

Methods of making bioactive collagen wound care dressings

An apparatus for stimulation of collateral development in ischemic cardiac regions comprises a mechanism for fluid coupling of the left ventricle of the heart to the anterior interventricular vein to stimulate collateral development in ischemic regions. The fluid coupling of the left ventricle of the heart to the anterior interventricular vein includes a control of the diastolic/systolic pressure in the venous system to be within about 20-50 mmHg. The fluid coupling of the left ventricle of the heart to the anterior interventricular vein includes inserting a transmyocardial conduit into the left ventricle and a tri-directional coupler attached to the anterior interventricular vein. An associated method for stimulation of collateral development in ischemic cardiac regions via the fluid coupling of the left ventricle of the heart to the anterior interventricular vein is disclosed.

Method and apparatus for coupling left ventricle of the heart to the anterior interventricular vein to stimulate collateral development in ischemic regions

A method of treating a tubular medical device with a biomolecule comprises the steps of: a) providing a polyolefin tubular substrate forming a tubular medical device; b) cleaning the tubular polyolefin substrate; c) exposing the tubular polyolefin substrate to a reactive gas containing at least one of acrylic acid and siloxane and to plasma energy to yield a plasma-deposited coating on at least one surface of the tubular polyolefin substrate; and d) attaching a biomolecule to the polyolefin substrate following formation of the plasma-deposited coating on at least one surface of the tubular polyolefin substrate, and wherein the biomolecule is at least one of an antibacterial agent, antimicrobial agent, anticoagulant, heparin, antithrombotic agent, platelet agent, anti-inflammatory, enzyme, catalyst, hormone, growth factor, drug, vitamin, antibody, antigen, protein, nucleic acid, dye, a DNA segment, an RNA segment, protein, and peptide.

Methods of surface treating tubular medical products

A method of preparing a crosslinked, collagen-based medical scaffold is provided, comprising: (a) immersing a sample of fibrous and/or non-fibrous collagen in a buffered acidic, aqueous solution comprising an alcohol; (b) contacting the collagen in solution with a catalytic component comprising 1-ethyl-3-[3-dimethylaminopropyl]carbodiimide hydrochloride for a time at least sufficient to effect reaction between amino and carboxyl groups present on the collagen and to yield crosslinked collagen that is resistant to pronase degradation; and (c) drying the crosslinked collagen to yield a porous, crosslinked collagen article wherein the porous, crosslinked collagen article demonstrates a pore size of 10-500 microns. Also provided are bioactive collagen medical scaffolds for wound care dressings, hernia repair prosthetics, and surgical incision closure members, prepared using the method above.

Methods of making bioactive collagen medical scaffolds such as for wound care dressings, hernia repair prosthetics, and surgical incision closure members

A variety of medical devices including staples sutures and dental floss with surface treatment on at least one tissue-facing surface to improve biologic function such as to control tissue adhesion are disclosed including heparin surface treatment which provides heparin present in an amount to yield heparin bioactivity of at least one of i) an ATIII binding of at least 2 pmol/cm, and ii) a thrombin deactivation of at least 0.2 IU/cm; an acrylic surface treatment for coupling thereto of a heparin surface treatment, a collagen surface treatment or both; and an amino-functional polysiloxane surface treatment for coupling thereto of a heparin surface treatment.

Surface treated staples, sutures and dental floss and methods of manufacturing the same

A method for stimulation of collateral development in ischemic cardiac regions comprises the fluid coupling of the left ventricle of the heart to the anterior interventricular vein to stimulate collateral development in ischemic regions. The fluid coupling of the left ventricle of the heart to the anterior interventricular vein includes a control of the diastolic/systolic pressure in the venous system to be within about 20-50 mmHg. The fluid coupling of the left ventricle of the heart to the anterior interventricular vein includes inserting a transmyocardial conduit into the left ventricle and a tri-directional coupler attached to the anterior interventricular vein. An associated apparatus for stimulation of collateral development in ischemic cardiac regions via the fluid coupling of the left ventricle of the heart to the anterior interventricular vein is disclosed.

An integrated blood pump oxygenator comprises an impeller housing supporting an impeller with an annular hydrogel impeller packing material adjacent the bearings and around the shaft of the impeller. The oxygenator including a rollover outlet in the form of an annular chamber extending around a center pump housing member; and further including an annular chamber within an annular array of hollow fiber membranes in fluid communication with the annular chamber extending from the impeller around the center pump housing; wherein the annular chamber provides substantially perpendicular radial outward cross flow across the membranes.

Compact integrated blood pump oxygenator or gas transfer device with hydrogel impeller packing material and rollover impeller outlet

A method of treating the surface of a medical device with a biomolecule comprising the steps of: providing a polyolefin substrate forming a medical device; cleaning the polyolefin substrate; exposing the polyolefin substrate to a reactive gas containing acrylic acid and to plasma energy to yield a plasma-deposited polyacrylic acid coating on the polyolefin substrate; and attaching a biomolecule, such as heparin, to the polyolefin substrate following formation of the plasma-deposited polyacrylic acid coating on the polyolefin substrate.

Method of treating the surface of a medical device with a biomolecule

Processes are provided for preparing a substrate coated with a biomolecule, comprising: The coated substrate may be a medical device that demonstrates an ability to maintain gas permeability when in contact with blood or blood components, compared to a substantially identical medical device that has not been coated with a biomolecule using this process.

Growing community of inventors

Cape Coral, FL, United States of America

Patrick Cahalan