Patents Assigned to Interface Biomedical Laboratories
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Patent number: 5344425Abstract: An anti-turbulent, anti-thrombogenic intravascular stent of a helically shaped titanium or aluminum strip having an airfoil on internal surfaces thereof for increasing blood flow through the stent without creating areas of stagnant or turbulent flow therein. Also, a method for cleaning the stent for optimum performance in the intended application, and the stents which are cleaned by the process, and novel devices for introducing the stents of the invention into the body of a patient.Type: GrantFiled: February 6, 1992Date of Patent: September 6, 1994Assignee: Interface Biomedical Laboratories, Corp.Inventor: Philip N. Sawyer
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Patent number: 5156613Abstract: A method of joining or reconstructing biological tissue which comprises applying optical energy to the biological tissue while providing a collagen filler material thereto; denaturing the collagen filler material and biological tissue with the optical energy to cause joining of the collagen filler material and biological tissue, thus joining or reconstructing such tissue.Type: GrantFiled: February 13, 1991Date of Patent: October 20, 1992Assignee: Interface Biomedical Laboratories Corp.Inventor: Philip N. Sawyer
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Patent number: 5108417Abstract: An anti-turbulent, anti-thrombogenic intravascular stent of a helically shaped titanium or aluminum strip having an airfoil on internal surfaces thereof for increasing blood flow velocity through the stent without creating areas of stagnant or turbulent flow therein.Type: GrantFiled: September 14, 1990Date of Patent: April 28, 1992Assignee: Interface Biomedical Laboratories Corp.Inventor: Philip N. Sawyer
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Patent number: 5098406Abstract: A fluid flow control device of tubular means having fluid input means and fluid output means connected by a bore constituting a flow channel, means for maintaining the bore in a normally closed position, the bore being forcible to an open position in response to insertion of a medical device into the fluid input means and past the maintaining means, the maintaining means being constructed and arranged to return the bore to the closed position when the medical device is removed therefrom; and means for prevention of fluid reflux or blood from the fluid output means toward the fluid input means when the bore is in the open position.Type: GrantFiled: November 1, 1990Date of Patent: March 24, 1992Assignee: Interface Biomedical Laboratories Corp.Inventor: Philip N. Sawyer
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Patent number: 4883461Abstract: Methods for preventing needle-stick injuries to healthcare workers during intravenous or intra-arterial procedures as well as for preventing catheter-contamination and blood clotting within the tip of the catheter. Also, novel fluid directing means and catheters which include integral fluid flow control means for use in these methods.Type: GrantFiled: November 10, 1988Date of Patent: November 28, 1989Assignee: Interface Biomedical Laboratories Corp.Inventor: Philip N. Sawyer
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Patent number: 4784644Abstract: A method for preventing the introduction of air into the vascular system of a patient during intravenous or intra-arterial procedures, as well as for preventing the reflux of fluids into the body of a patient. Also, novel fluid directing means and catheters which include integral or attached fluid flow control means for use in this method.Type: GrantFiled: May 15, 1987Date of Patent: November 15, 1988Assignee: Interface Biomedical Laboratories Corp.Inventors: Philip N. Sawyer, Joseph F. Fitzgerald, Lester F. Miller
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Patent number: 4738849Abstract: A composite medical article comprising a porous body, a first layer of a medicinal substance and a second layer of a medicinal substance. A method for forming a composite medical article comprising saturating a porous substrate so as to incorporate a first medicinal substance therein, preparing a coating therefor comprising a second medicinal substance with at least a portion thereof in liquid phase, affixing an onlay of the coating to the material by freezing the liquid portion of the coating to the material to form an onlaid composite medical article and drying the article. The medicinal substances may comprise either a hemostatic agent or a medicament.Type: GrantFiled: December 22, 1986Date of Patent: April 19, 1988Assignee: Interface Biomedical Laboratories Corp.Inventor: Philip N. Sawyer
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Patent number: 4722725Abstract: Methods for preventing the introduction of air into the vascular system of a patient during intravenous or intraarterial procedures, as well as for preventing the reflex of fluids into the body of a patient. Also, novel fluid directing means and catheters which include integal or attached fluid flow control means for use in these methods.Type: GrantFiled: May 11, 1987Date of Patent: February 2, 1988Assignee: Interface Biomedical Laboratories, Inc.Inventors: Philip N. Sawyer, Joseph F. Fitzgerald
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Patent number: 4684364Abstract: An intravenous system is provided which includes a source of intravenous fluid, a needle or catheter for insertion into the vascular system of a patient, a pump for pumping the intravenous fluid via the needle or catheter into the patient and catheters coupling the pump to the source and to the needle. The pump includes an arrangement to terminate pumping upon an opening upon one of the catheters to ambient atmosphere. A flow control is provided in at least one of the catheters to prevent movement of air through the corresponding catheters into the patient.Type: GrantFiled: April 12, 1983Date of Patent: August 4, 1987Assignee: Interface Biomedical Laboratories CorporationInventors: Philip N. Sawyer, Joseph F. Fitzgerald
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Patent number: 4606910Abstract: An improved hemostatic article is made by fusing an onlay of hemostatic agent to a porous body which is already impregnated with the same or with a different hemostatic agent. The hemostatic agent(s) may comprise a collagen or collagen-like substance which has been modified by rendering the surface charge thereof effectively more positive than prior to modification.Type: GrantFiled: June 28, 1984Date of Patent: August 19, 1986Assignee: Interface Biomedical LaboratoriesInventor: Philip N. Sawyer
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Patent number: 4167045Abstract: A prosthesis suitable for implantation in a bloody environment. The prosthesis includes a surface material adapted for exhibiting a regular and periodic surface charge characteristic in the bloody environment. A prosthesis means supports the surface material and is adapted to perform a prosthetic function in the bloody environment. In cases where cross-linking is desired and the surface material cannot cross-link with the substrate material, an adaptive material is provided which cross-links both to the surface material and to the material of the prosthesis. In one type of prosthesis, the surface material is aluminized. In another type of prosthesis, acrylamide is applied to the prosthesis. In still another type of prosthesis, agar is applied to the prosthesis in conjunction with gelatin. In another type of prosthesis, albumin is applied to the prosthesis.Type: GrantFiled: August 26, 1977Date of Patent: September 11, 1979Assignee: Interface Biomedical Laboratories Corp.Inventor: Philip N. Sawyer
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Patent number: 4027392Abstract: An endosteal tooth in one form is made of an electrically conductive material and is provided with an implant (e.g., lower) socket portion and a removably mounted crown (e.g., upper) portion which houses therein a source of electrical current for the implant socket portion. By supplying electrical current or voltage to the implant socket portion, which is embedded in bone in the region of the implantation, the growth of bone is induced and the prevention of infection provided. The rate of growth of the bone and the type of bone growth can be controlled by the amount of current supplied to the implant socket portion. In one embodiment of the invention, the source of electrical current is housed in the crown portion of the tooth which is replaced with a final crown after the growth of bone has been completed. In another form of the invention, the source of electrical current is supplied externally of the tooth.Type: GrantFiled: May 10, 1976Date of Patent: June 7, 1977Assignee: Interface Biomedical Laboratories CorporationInventors: Philip Nicholas Sawyer, Boguslaw Stanczewski