Patents by Inventor Daniel R. Lynn
Daniel R. Lynn 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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Publication number: 20240058215Abstract: Medical containers and disposable fluid circuits (kits) including such containers are disclosed. The containers and kit components are made of a plastic composition including polyvinyl chloride and one or more plasticizers such as a citrate ester and an epoxidized vegetable oil are disclosed. Containers made from such compositions are useful in the storage red blood cells. Red blood cell products wherein the red blood cells exhibit a reduced level of hemolysis are also disclosed.Type: ApplicationFiled: December 17, 2021Publication date: February 22, 2024Inventors: Craig L. Sandford, Daniel R. Lynn, Adrienne B. Karpiel, Timo Matser
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Patent number: 11097037Abstract: Systems and methods are provided for separating a red blood cell-containing fluid into separated red blood cells and another fluid constituent. A suitable system includes a disposable fluid flow circuit and a durable, reusable separation system, with the circuit being mounted onto or otherwise associated with the separation system. The circuit includes a membrane separator for separating the fluid into its constituent parts, as well as a leukoreduction filter. The leukoreduction filter may be used before or after the red blood cell-containing fluid has been passed into the membrane separator. The red blood cell-containing fluid (if the leukoreduction filter is positioned upstream of the membrane separator) or the separated red blood cells (if the leukoreduction filter is positioned downstream of the membrane separator) may also be passed through a microaggregate filter prior to passing through the leukoreduction filter.Type: GrantFiled: June 13, 2019Date of Patent: August 24, 2021Assignee: Fenwal, Inc.Inventors: Daniel R. Lynn, Daryl R. Calhoun
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Patent number: 10967389Abstract: A centrifuge rotor assembly includes a chamber assembly, a bearing support, and a counterweight that is substantially diametrically opposed to the bearing support with respect to the chamber assembly. The chamber assembly receives a processing chamber of a fluid circuit, while the bearing support receives a portion of an umbilicus that is fluidly connected to the processing chamber. The bearing support and counterweight are rotated about a central axis of the chamber assembly by an electric drive of the centrifuge rotor assembly, with the bearing support and counterweight remaining substantially diametrically opposed to each other with respect to the chamber assembly while being rotated about the central axis. The electric drive may rotate the bearing support and counterweight at a plurality of different speeds, with the counterweight automatically moving with respect to the bearing support between radially innermost and radially outermost positions to balance the centrifuge rotor assembly.Type: GrantFiled: November 22, 2016Date of Patent: April 6, 2021Assignee: Fenwal, Inc.Inventors: Richard L. West, Daniel R. Lynn
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Publication number: 20190290814Abstract: Systems and methods are provided for separating a red blood cell-containing fluid into separated red blood cells and another fluid constituent. A suitable system includes a disposable fluid flow circuit and a durable, reusable separation system, with the circuit being mounted onto or otherwise associated with the separation system. The circuit includes a membrane separator for separating the fluid into its constituent parts, as well as a leukoreduction filter. The leukoreduction filter may be used before or after the red blood cell-containing fluid has been passed into the membrane separator. The red blood cell-containing fluid (if the leukoreduction filter is positioned upstream of the membrane separator) or the separated red blood cells (if the leukoreduction filter is positioned downstream of the membrane separator) may also be passed through a microaggregate filter prior to passing through the leukoreduction filter.Type: ApplicationFiled: June 13, 2019Publication date: September 26, 2019Inventors: Daniel R. Lynn, Daryl R. Calhoun
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Patent number: 10376620Abstract: Systems and methods are provided for separating a red blood cell-containing fluid into separated red blood cells and another fluid constituent. A suitable system includes a disposable fluid flow circuit and a durable, reusable separation system, with the circuit being mounted onto or otherwise associated with the separation system. The circuit includes a membrane separator for separating the fluid into its constituent parts, as well as a leukoreduction filter. The leukoreduction filter may be used before or after the red blood cell-containing fluid has been passed into the membrane separator. The red blood cell-containing fluid (if the leukoreduction filter is positioned upstream of the membrane separator) or the separated red blood cells (if the leukoreduction filter is positioned downstream of the membrane separator) may also be passed through a microaggregate filter prior to passing through the leukoreduction filter.Type: GrantFiled: April 2, 2015Date of Patent: August 13, 2019Assignee: Fenwal, Inc.Inventors: Daniel R. Lynn, Daryl R. Calhoun
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Publication number: 20170144172Abstract: A centrifuge rotor assembly includes a chamber assembly, a bearing support, and a counterweight that is substantially diametrically opposed to the bearing support with respect to the chamber assembly. The chamber assembly receives a processing chamber of a fluid circuit, while the bearing support receives a portion of an umbilicus that is fluidly connected to the processing chamber. The bearing support and counterweight are rotated about a central axis of the chamber assembly by an electric drive of the centrifuge rotor assembly, with the bearing support and counterweight remaining substantially diametrically opposed to each other with respect to the chamber assembly while being rotated about the central axis. The electric drive may rotate the bearing support and counterweight at a plurality of different speeds, with the counterweight automatically moving with respect to the bearing support between radially innermost and radially outermost positions to balance the centrifuge rotor assembly.Type: ApplicationFiled: November 22, 2016Publication date: May 25, 2017Inventors: Richard L. West, Daniel R. Lynn
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Publication number: 20160289638Abstract: Systems and methods are provided for separating a red blood cell-containing fluid into separated red blood cells and another fluid constituent. A suitable system includes a disposable fluid flow circuit and a durable, reusable separation system, with the circuit being mounted onto or otherwise associated with the separation system. The circuit includes a membrane separator for separating the fluid into its constituent parts, as well as a leukoreduction filter. The leukoreduction filter may be used before or after the red blood cell-containing fluid has been passed into the membrane separator. The red blood cell-containing fluid (if the leukoreduction filter is positioned upstream of the membrane separator) or the separated red blood cells (if the leukoreduction filter is positioned downstream of the membrane separator) may also be passed through a microaggregate filter prior to passing through the leukoreduction filter.Type: ApplicationFiled: April 2, 2015Publication date: October 6, 2016Inventors: Daniel R. Lynn, Daryl R. Calhoun
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Patent number: 8870828Abstract: Medical needle assemblies incorporating a needle cover are provided. According to one aspect, the needle cover is integrally formed from a material that: (1) is sufficiently rigid to prevent bending of an underlying cannula, (2) is suitable for allowing a frangible portion thereof to be broken under pre-selected conditions, and/or (3) has a moisture vapor transmission rate sufficient for steam sterilization of a needle tip enclosed by the needle cover. According to another aspect, at least part of a cap portion and a hub portion of the needle cover are translucent. According to yet another aspect, the needle cover is provided with a wing having an enlarged rib suitable for gripping during separation of a cap portion from the remainder of the needle cover.Type: GrantFiled: December 4, 2012Date of Patent: October 28, 2014Assignee: Fenwal, Inc.Inventors: Richard L. West, Daniel R. Lynn, Mark B. Jones, Daniel F. Bischof
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Patent number: 8323251Abstract: Needle covers are provided for medical needle assemblies having a base and a cannula. The needle cover includes hub and cap portions. The hub portion is adapted to be secured to the base. The cap portion is adapted to substantially enclose at least a distal end of the cannula when the hub portion is secured to the base. The cap portion includes at least one generally outwardly extending wing having an outer edge and an enlarged rib extending along only a portion of the outer edge of the wing and only in a direction substantially parallel to a central axis defined by the cap portion. The cap portion is separable from the hub portion upon application of a torsional force, with the rib of the wing being thicker than the portion of the wing radially inward of the outer edge to assist gripping during application of such force.Type: GrantFiled: January 14, 2008Date of Patent: December 4, 2012Assignee: Fenwal, Inc.Inventors: Richard L. West, Daniel R. Lynn, Mark B. Jones, Daniel F. Bischof
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Publication number: 20090198196Abstract: Medical needle assemblies incorporating a needle cover are provided. According to one aspect, the needle cover is integrally formed from a material that: (1) is sufficiently rigid to prevent bending of an underlying cannula, (2) is suitable for allowing a frangible portion thereof to be broken under pre-selected conditions, and/or (3) has a moisture vapor transmission rate sufficient for steam sterilization of a needle tip enclosed by the needle cover. According to another aspect, at least part of a cap portion and a hub portion of the needle cover are translucent. According to yet another aspect, the needle cover is provided with a wing having an enlarged rib suitable for gripping during separation of a cap portion from the remainder of the needle cover.Type: ApplicationFiled: January 14, 2008Publication date: August 6, 2009Inventors: Richard L. West, Daniel R. Lynn, Mark B. Jones, Daniel F. Bischof
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Patent number: 7353956Abstract: Blood collection systems include an integral flexible filter to remove leukocytes from blood components.Type: GrantFiled: January 21, 2004Date of Patent: April 8, 2008Assignee: Fenwal, Inc.Inventors: Daniel R Lynn, Julian P Breillatt, Jr., John C Burnham, David B. Howard, Allen R Wons
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Patent number: 7278541Abstract: A method of making a blood filter assembly provides first and second filter housing elements from a flexible thermoplastic material, each of the first and second housing elements including a molded port. The method places a filter media between the first and second filter housing elements and applies radio frequency heating and pressure to form a peripheral seal that joins the first and second filter housing elements to the filter media and encapsulates the filter media between the first and second housing elements.Type: GrantFiled: January 26, 2004Date of Patent: October 9, 2007Assignee: Fenwal, Inc.Inventors: Julian P Breillatt, Jr., John C Burnham, Allen R Wons, Randy Murphy, Daryl R Calhoun, Daniel R Lynn
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Publication number: 20040154974Abstract: A method of making a blood filter assembly provides first and second filter housing elements from a flexible thermoplastic material, each of the first and second housing elements including a molded port. The method places a filter media between the first and second filter housing elements and applies radio frequency heating and pressure to form a peripheral seal that joins the first and second filter housing elements to the filter media and encapsulates the filter media between the first and second housing elements.Type: ApplicationFiled: January 26, 2004Publication date: August 12, 2004Applicant: Baxter International Inc.Inventors: Julian P. Breillatt, John C. Burnham, Allen R. Wons, Randy Murphy, Daryl R. Calhoun, Daniel R. Lynn
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Publication number: 20040149646Abstract: Blood collection systems include an integral flexible filter to remove leukocytes from blood components.Type: ApplicationFiled: January 21, 2004Publication date: August 5, 2004Applicant: Baxter International Inc.Inventors: Daniel R. Lynn, Julian P. Breillatt, John C. Burnham, David B. Howard, Allen R. Wons
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Patent number: 6745902Abstract: Blood collection systems include an integral flexible filter to remove leukocytes from blood components.Type: GrantFiled: May 31, 2002Date of Patent: June 8, 2004Assignee: Baxter International Inc.Inventors: Daniel R Lynn, Julian C Breillatt, John C Burnham, David B. Howard, Allen R Wons
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Patent number: 6688476Abstract: A fluid filter assembly for filtering fluids such as blood is described. The assembly includes first and second filter housing elements formed by an injection molding process. Each element is flexible and includes a peripheral flange formed thereabout and a fluid communicating port formed therein. Filter media, such as a filter membrane, is sealed between the mating flanges of two elements. The fluid filter assembly is capable of collapsing and expanding during the filtration process depending upon the composition of the fluid passed there through. A method for making the filter assembly and systems for using the filter assembly are also disclosed.Type: GrantFiled: February 27, 2002Date of Patent: February 10, 2004Assignee: Baxter International Inc.Inventors: Julian P Breillatt, Jr., John C Burnham, Allen R Wons, Randy Murphy, Daryl R Calhoun, Daniel R Lynn
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Publication number: 20030209479Abstract: A blood collection system has a container for holding blood and a filter communicating with the container, mutually arranged for handling as a unit. The filter (20) contains a fibrous filter medium (28) housed within two flexible sheets (32, 34) of plastic. A first seal (36) joins the sheets (32, 34) directly to the filter medium (28) inboard of the peripheral edge (40) of the filter medium (28), and a second seal (38) joins the sheets (32, 34) outboard of the peripheral edge (40) of the filter medium (28). A region (42) of the filter medium (28) extends between the first and second seals (36, 38) to cushion contact with the filter housing during handling.Type: ApplicationFiled: March 10, 2003Publication date: November 13, 2003Inventors: Daniel R Lynn, Allen R Wons, Luc Mespreuve, Daniel Vandendaul, Gregory Soudant, Tat C Mui, Daniel M Karlovsky, Randy Murphey, Daryl R Calhoun, Shin-Ichiroh Oka, Michihiro Tsuji
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Publication number: 20030000886Abstract: A fluid filter assembly for filtering fluids such as blood. The assembly includes first and second filter housing elements formed by an injection molding process. Each element is flexible and includes a peripheral flange formed thereabout and a fluid communicating port formed therein. Filter media, such as a filter membrane, is sealed between the mating flanges of two elements. The fluid filter assembly is capable of collapsing and expanding during the filtration process depending upon the composition of the fluid passed there through. A method for making the filter assembly and systems for using the filter assembly are also disclosed.Type: ApplicationFiled: February 27, 2002Publication date: January 2, 2003Applicant: Baxter International Inc.Inventors: Julian P. Breillatt, John C. Burnham, Allen R. Wons, Randy Murphy, Daryl R. Calhoun, Daniel R. Lynn
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Publication number: 20020148764Abstract: Blood collection systems include an integral flexible filter to remove leukocytes from blood components.Type: ApplicationFiled: May 31, 2002Publication date: October 17, 2002Applicant: Baxter International Inc.Inventors: Daniel R. Lynn, Julian P. Breillatt, John C. Burnham, David B. Howard, Allen R. Wons
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Publication number: 20020113003Abstract: A blood collection system has a container for holding blood, and a filter communicating with the container, which are mutually arranged for handling as a unit. The filter contains a fibrous filter medium housed within two flexible sheets of plastic. A first seal joins the sheets directly to the filter medium inboard of the peripheral edge of the filter medium, and a second seal joins the sheets outboard of the peripheral edge of the filter medium. A region of the filter medium extends between the first and second seals to cushion contact with the filter housing during handling.Type: ApplicationFiled: August 1, 2001Publication date: August 22, 2002Applicant: Baxter International, Inc.Inventors: Daniel R. Lynn, Allen R. Wons, Gregory Maurice Soudant, Daniel Gaston Vandendaul, Luc Joseph Andre Mespreuve