Patents by Inventor T. Michael Dennehey
T. Michael Dennehey has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8702129Abstract: A system for forming a fluid connection includes a first connector and a second connector. Both connectors include a tubular body having a membrane mounted on a distal end thereof. A support member facilitates the coupling of the connectors together so that the membranes are abutted together. Radiant energy is applied to the abutted membranes so as to first sterilize the membranes and then melt the membranes so that a passage is formed therethrough.Type: GrantFiled: April 23, 2008Date of Patent: April 22, 2014Assignee: HyClone Laboratories, Inc.Inventors: Arnold C. Bilstad, Bradley H. Buchanan, T. Michael Dennehey, Michael E. Goodwin, Jeremy K. Larsen, Whitt F. Woods, David V. Bacehowski
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Patent number: 7938454Abstract: A system for forming a fluid connection includes a first connector and a second connector. Both connectors include a tubular body having a membrane mounted on a distal end thereof. A support member facilitates the coupling of the connectors together so that the membranes are abutted together. Radiant energy is applied to the abutted membranes so as to first sterilize the membranes and then melt the membranes so that a passage is formed therethrough.Type: GrantFiled: April 24, 2007Date of Patent: May 10, 2011Assignee: HyClone Laboratories, Inc.Inventors: Bradley H. Buchanan, Arnold C. Bilstad, T. Michael Dennehey, David V. Bacehowski
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Publication number: 20100133807Abstract: A system for forming a fluid connection includes a first connector (12) and a second connector (14). Both connectors include a tubular body (18,18?) having a membrane (19,19?) mounted on a distal end (27) thereof. A support member (16) or other fastener (214,220) facilitates the coupling of the connectors together so that the membranes are abutted together. Radiant or other form of energy is applied to the abutted membranes so as to sterilize the membranes and melt the membranes so that a passage is formed therethrough.Type: ApplicationFiled: April 23, 2008Publication date: June 3, 2010Applicant: HYCLONE LABORATORIES, INC.Inventors: Arnold C. Bilstad, Bradley H. Buchanan, T. Michael Dennehey, Michael E. Goodwin, Jeremy K. Larsen, Whitt F. Woods, David V. Bacehowski
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Publication number: 20080265561Abstract: A system for forming a fluid connection includes a first connector and a second connector. Both connectors include a tubular body having a membrane mounted on a distal end thereof. A support member facilitates the coupling of the connectors together so that the membranes are abutted together. Radiant energy is applied to the abutted membranes so as to first sterilize the membranes and then melt the membranes so that a passage is formed therethrough.Type: ApplicationFiled: April 24, 2007Publication date: October 30, 2008Applicant: Hyclone Laboratories, Inc.Inventors: Bradley H. Buchanan, Arnold C. Bilstad, T. Michael Dennehey
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Patent number: 6523698Abstract: A bone marrow collection kit is provided comprising a collection container for receiving a bone marrow containing fluid having a body that defines an interior and an inlet opening and an outlet opening and including a prefilter that extends from the outlet opening into the interior of the collection container so that fluid must flow through the prefilter to exit the collection container through the outlet opening. A first inline filter member is coupled to the outlet opening of the collection container, the first inline filter member having a flexible plastic body that defines an interior, and an inlet opening and an outlet opening and the interior including a filter so constructed and arranged that fluid that enters the inlet opening must flow through the filter to exit the first inline filter member through the outlet opening.Type: GrantFiled: June 21, 2000Date of Patent: February 25, 2003Assignee: Baxter International, Inc.Inventors: T. Michael Dennehey, Joseph C. West, Jr., James W. Yang
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Patent number: 6497685Abstract: A filtering chamber for a set for the administration of fluids is provided. The chamber includes a housing providing a passageway for the fluid in the administration set. Within the chamber is a filter of screen which filters the fluid flowing through the housing. The filter or screen is attached to the housing during molding of the housing without the use of bonding agents, resulting in a chamber component which may be produced automatically and economically.Type: GrantFiled: March 24, 2000Date of Patent: December 24, 2002Assignee: Baxter International Inc.Inventors: T. Michael Dennehey, Birendra K. Lal, Massimo Scagliarini
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Patent number: 6189704Abstract: A bone marrow collection kit is provided comprising a collection container for receiving a bone marrow containing fluid having a body that defines an interior and an inlet opening and an outlet opening and including a prefilter that extends from the outlet opening into the interior of the collection container so that fluid must flow through the prefilter to exit the collection container through the outlet opening. A first inline filter member is coupled to the outlet opening of the collection container, the first inline filter member having a flexible plastic body that defines an interior, and an inlet opening and an outlet opening and the interior including a filter so constructed and arranged that fluid that enters the inlet opening must flow through the filter to exit the first inline filter member through the outlet opening.Type: GrantFiled: October 23, 1997Date of Patent: February 20, 2001Assignee: Baxter International Inc.Inventors: T. Michael Dennehey, Joseph C. West, Jr., James W. Yang
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Patent number: 5996634Abstract: A stress-bearing umbilicus for conveying fluid between a stationary body and a rotating body comprises an umbilicus body made from an extruded first polyester elastomer material having flexibility. A support block, made from a second polyester elastomer material, is over-molded about at least one region of the umbilicus body. The second polyester elastomer material has flexibility that is greater than the flexibility of the first polyester elastomer material. Surface energy of the region between the support block and the umbilicus body is increased before over-molding to prevent delamination and peeling.Type: GrantFiled: January 23, 1996Date of Patent: December 7, 1999Assignee: Baxter International IncInventors: T. Michael Dennehey, Indrajit Patel, Dean M. Glash
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Patent number: 5758655Abstract: A bone biopsy needle assembly which includes a handle having a proximal concave curved surface having an off-center radius producing a first relatively narrow end and a second relatively wide end of the handle. The wide end is curved to conform to the shape of a user's palm, and the narrow end forms a surface to limit lateral slippage in the direction of the user's forefinger. The handle also has a distal surface with a receiving opening. A cannula has a central lumen, with a first end extending into the receiving opening and being connected to the distal surface of the handle toward the relatively narrow end and having a second end extending distally from the handle. A removable stylet is slidably received within the lumen and has a proximal knob carried by the handle.Type: GrantFiled: May 22, 1995Date of Patent: June 2, 1998Assignee: Allegiance CorporationInventors: Jan L. Como Rodriguez, James W. Kendall, Gregory D. Volan, Stephen Kuehn, T. Michael Dennehey
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Patent number: 5724988Abstract: A bone marrow collection kit is provided comprising a collection container for receiving a bone marrow containing fluid having a body that defines an interior and an inlet opening and an outlet opening and including a prefilter that extends from the outlet opening into the interior of the collection container so that fluid must flow through the prefilter to exit the collection container through the outlet opening. A first inline filter member is coupled to the outlet opening of the collection container, the first inline filter member having a flexible plastic body that defines an interior, and an inlet opening and an outlet opening and the interior including a filter so constructed and arranged that fluid that enters the inlet opening must flow through the filter to exit the first inline filter member through the outlet opening.Type: GrantFiled: July 12, 1993Date of Patent: March 10, 1998Assignee: Baxter International Inc.Inventors: T. Michael Dennehey, Joseph C. West, Jr., James W. Yang
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Patent number: 5538009Abstract: A bone marrow biopsy needle assembly includes an elongated tubular cannula having an axially extending lumen therethrough, and a cannula handle attached to the proximal end of the cannula, the cannula handle extending transversely to the axis of the cannula and having a cavity aligned with and open to the proximal end of the cannula. The handle is provided with a cover connected to the cannula by means of a living hinge. A stylet having a knob affixed to its proximal end which knob is sized to fit within the cavity with the stylet slidably received within the cannula lumen. The cavity is provided with projections that engage the knob to prevent relative rotation between the stylet and the cannula. A guide is provided to facilitate insertion of a stylet into the cannula for sample removal.Type: GrantFiled: July 21, 1994Date of Patent: July 23, 1996Assignee: Baxter International, Inc.Inventors: John R. Byrne, Jan L. Como, Gregory D. Volan, Stephen Kuehn, Terrence W. Snyder, T. Michael Dennehey, David A. Winchell, deceased
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Patent number: 5514069Abstract: An umbilicus conveys fluid between a stationary body and a rotating body in a small, compact operating environment. The umbilicus comprises an elongated body including a proximal end, a distal end, and a middle region between the proximal and distal ends. A first support block is attached to the proximal end. A second support block is attached to the distal end. The first support block includes a strain relief sleeve. The umbilicus is otherwise free of any other strain relief sleeve. A thrust bearing member in the middle region spaced apart from the strain relief sleeve and the distal end. The umbilicus is otherwise free of any other thrust bearing member. The thrust bearing member has an inner annular body, an outer annular body about the inner annular body, and an array of ball bearings between the inner and outer annular bodies. The ball bearings support the inner annular body for rotation relative to the outer annular body.Type: GrantFiled: December 22, 1993Date of Patent: May 7, 1996Assignee: Baxter International Inc.Inventors: Richard I. Brown, David E. Cerny, T. Michael Dennehey, Indrajit Patel, Dean M. Glash
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Patent number: 5482440Abstract: A blood processing assembly includes a separation element for separating blood from a source into a first component and a second component. The assembly also includes a fluid path that conveys blood between the source and the separation element. The fluid path includes one or more in-line cassettes that serve in association with peristaltic pumps to centralize pumping and valving functions of the system. The cassettes also serve to segregate the flow paths of the blood components from each other.Type: GrantFiled: December 22, 1993Date of Patent: January 9, 1996Inventors: T. Michael Dennehey, Richard I. Brown, Warren P. Williamson
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Patent number: 5462416Abstract: A cassette serves in association with one or more peristaltic pumps to centralize pumping, valving, and pressure sensing functions. The cassette includes a housing having first and second pump ports. A flexible tubing loop extends between the first and second pump ports outside the housing for engagement with an external peristaltic pump element. A liquid port on the housing attaches to a length of tubing that also extends outside the housing. Liquid passages within the housing that establish communication among the liquid port, the first pump port, and the second pump port. Valve stations formed within the housing are responsive to the application of external force for controlling liquid flow through the liquid passages. A sensing chamber is formed within the housing along at least one liquid passage. The sensing chamber transmits information regarding liquid pressure present within the one liquid passage to an external sensing element.Type: GrantFiled: December 22, 1993Date of Patent: October 31, 1995Assignee: Baxter International Inc.Inventors: T. Michael Dennehey, Richard I. Brown, Warren P. Williamson
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Patent number: 5427509Abstract: A peristaltic pump tube holder has a body having first and second pump tube connectors extending outside of it. The pump tube connectors extend at an acute angle relative to a surface of the body to receive a flexible tubing loop and orient the tubing loop for engagement with an external peristaltic pump rotor.Type: GrantFiled: December 22, 1993Date of Patent: June 27, 1995Assignee: Baxter International Inc.Inventors: Arthur S. Chapman, T. Michael Dennehey, Richard I. Brown, Warren P. Williamson
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Patent number: 5224921Abstract: A device and method are provided for separating mononuclear cells from red blood cell depleted plasma in a centrifuge blood cell separator. The device includes an inlet for receiving plasma, an area for receiving mononuclear cells, and an outlet for receiving mononuclear cell depleted plasma. The distance and flow path between the inlet and outlet being so constructed and arranged as to cause mononuclear cells to sediment out into the area for receiving the mononuclear cells and causing at least 66% of the platelets contained in the plasma to flow to and through the outlet.Type: GrantFiled: May 31, 1990Date of Patent: July 6, 1993Assignee: Baxter International Inc.Inventors: T. Michael Dennehey, Joseph C. West, Jr.
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Patent number: 5078671Abstract: A centrifugal processing system and method introduces fluid to be processed into a centrifugation chamber, while directing the fluid away from the region of the chamber where the largest centrifugal (or "G") forces exist. The fluid is also conveyed into the force field as a generally uniform stream having reduced turbulence or being essentially free of turbulence. The system and method thereby establish, upon the entry of a high velocity fluid stream into the centrifugal field, non-turbulent and uniform flow conditions conducive to effective separation. The system and method also direct the fluid in a way the maximizes the effective surface area of the centrifugation chamber for separation. Effective separation can thereby be achieved at high inlet flow rates.Type: GrantFiled: October 12, 1990Date of Patent: January 7, 1992Assignee: Baxter International Inc.Inventors: T. Michael Dennehey, Joseph C. West, Jr.
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Patent number: 4936820Abstract: A centrifugal processing system for cultured cellular suspensions comprises a reservoir for pooling a desired volume of the cellular suspension from a plurality of individual containers in which the cellular suspension have been cultured. A centrifugation chamber is provided operative in response to centrifugal force for separating the cellular suspension into a cellular component and a supernatant. Fluid is conveyed from the reservoir into the centrifugation chamber at a high flow rate exceeding 1 liter per minute. The cellular component and supernatant are collected from the centrifugation chamber.Type: GrantFiled: September 5, 1989Date of Patent: June 26, 1990Assignee: Baxter International Inc.Inventors: T. Michael Dennehey, Stanley J. Pernic, Joseph C. West, Jr.
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Patent number: 4937194Abstract: A system for metering nutrient media to cell culture containers includes a media flow conduit which defines at one end means for substantially aseptic communication with the source of the media. In a preferred embodiment, sterile connectors may be used for essentially sterile conditions. A branch conduit extends from the flow conduit at a location spaced from the ends. The branch conduit communicates with means for receiving a predetermined-volume aliquot of media through the media flow conduit from said one end. The flow conduit also defines a portion downstream from the branch conduit, which communicates with at least one cell culture container, each container being a flexible bag. At least part of the flexible bag is made of a material capable of providing at least 2 times the oxygen diffusion and at least 2 times the carbon dioxide diffusion between the bag interior and exterior, compared with an identically-sized, sealed bag having polyethylene walls 0.013 inch thick.Type: GrantFiled: January 30, 1989Date of Patent: June 26, 1990Assignee: Baxter International Inc.Inventors: Martha C. Pattillo, David V. Bacehowski, Arnold C. Bilstad, Herbert M. Cullis, T. Michael Dennehey, James W. Yang, William C. Brown
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Patent number: D379229Type: GrantFiled: August 28, 1995Date of Patent: May 13, 1997Assignee: Baxter International, Inc.Inventors: Jan L. Como Rodriguez, Gregory D. Volan, James W. Kendall, T. Michael Dennehey