Patents by Inventor John Buan
John Buan 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: 20210299347Abstract: A negative pressure tissue treatment system useful for negative pressure therapy includes a drape, a gasket material, a reactor housing, a reactor, and any fluid connection(s). The drape covers the skin of a patient and maintains negative pressure under the drape. The gasket material cooperates with the drape to define an enclosed volume that is sealed by the gasket material. The reactor housing defines a closed chamber in fluid communication with the enclosed volume, and the re- actor is disposed in the reactor housing. The reactor consumes oxygen from a system volume defined by the enclosed volume, closed chamber, and/or any fluid connection(s). As a result of the oxygen consumption, the system volume is reduced to between about 95% to about 80% of the initial system volume.Type: ApplicationFiled: August 27, 2019Publication date: September 30, 2021Inventors: John Buan, Richard L. Middaugh, Timothy Wojciechowski, Thomas E. Lash
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Patent number: 11083833Abstract: A chemical pump assembly useful for negative pressure therapy includes a chemical pump housing having an inner chamber, a reactor located within the inner chamber, an opening provided in the chemical pump housing, a first pull tab which extends from the inner chamber to ambient through the opening, and a removable layer connected to the first pull tab. The reactor is configured to react with a selected gas found in air so as to consume the selected gas when exposed to air in the inner chamber. The removable layer shields the reactor from air in the inner chamber atmosphere until the removable layer is removed.Type: GrantFiled: February 24, 2020Date of Patent: August 10, 2021Assignee: AATRU MEDICAL, LLCInventors: John Buan, Richard L. Middaugh, Timothy Wojciechowski, Thomas E. Lash, Reed Oliver Saunders, Thomas Arthur Tedham
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Publication number: 20210236701Abstract: A chemical pump assembly useful for negative pressure therapy includes a chemical pump housing having an inner chamber, a reactor located within the inner chamber, an opening provided in the chemical pump housing, a first pull tab which extends from the inner chamber to ambient through the opening, and a removable layer connected to the first pull tab. The reactor is configured to react with a selected gas found in air so as to consume the selected gas when exposed to air in the inner chamber. The removable layer shields the reactor from air in the inner chamber atmosphere until the removable layer is removed.Type: ApplicationFiled: February 24, 2020Publication date: August 5, 2021Inventors: John Buan, Richard L. Middaugh, Timothy Wojciechowski, Thomas E. Lash, Reed Oliver Saunders, Thomas Arthur Tedham
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Patent number: 11071652Abstract: A wound therapy device and method includes a skin contacting element, a reactor, and a reactor housing element. The skin contacting element is configured for covering an associated tissue site, the reactor for creating a pressure condition at the associated tissue site upon actuation thereof, and the reactor housing element for accommodating the reactor. The skin contacting element has a skin contacting side and an interface side, which is opposite the skin contacting side. The reactor housing element has a lower affixing side and an upper side, which is opposite the lower affixing side.Type: GrantFiled: September 5, 2019Date of Patent: July 27, 2021Assignee: Lorain County Community College Innovation FoundationInventors: Russell S. Donda, Sundar Manickam, Richard L. Middaugh, Thomas E. Lash, Timothy Wojciechowski, John D. Wolter, John Buan
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Publication number: 20210170066Abstract: A dressing includes a drape, a pressure-sensitive acrylic-based adhesive on a skin-facing surface of the drape, an island of absorbent material, a silicone gel backing film, and a silicone gel on the silicone gel backing film. The drape is a thin film capable of maintaining a negative pressure underneath the drape upon application of a vacuum. The island of absorbent material has a smaller area than the drape and is applied onto the skin-facing surface of the drape. The silicone gel backing film has a frame shape and a smaller footprint than the drape and a larger footprint than the island of absorbent material.Type: ApplicationFiled: February 22, 2021Publication date: June 10, 2021Inventors: John Buan, Richard L. Middaugh, Timothy Wojciechowski, Thomas E. Lash
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Publication number: 20210154376Abstract: A negative pressure assembly includes a drape, a sealing element, a reactor, and a mechanical pump assembly. The drape covers a dressing site on a patient and seals against the skin upon application of a vacuum while maintaining a negative pressure underneath the drape. When applied to the skin, the sealing element cooperates with the drape to define an enclosed volume covered by the drape and surrounded by the sealing element. The reactor is located with respect to the drape and the sealing element to be in fluid communication with the enclosed volume when the drape is covering the dressing site and is configured to react with and consume a selected gas found in air. The mechanical pump assembly is connectable to the enclosed volume and has a pump chamber in fluid communication with the enclosed volume to draw air from the enclosed volume into the pump chamber.Type: ApplicationFiled: February 4, 2021Publication date: May 27, 2021Inventors: John Buan, Richard L. Middaugh, Timothy Wojciechowski, Thomas E. Lash
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Patent number: 11007083Abstract: A dressing includes a drape, a pressure-sensitive acrylic-based adhesive on a skin-facing surface of the drape, an island of absorbent material, a silicone gel backing film, a silicone gel on the silicone gel backing film, and a release liner. The drape is a thin film capable of maintaining a negative pressure underneath the drape upon application of a vacuum. The island of absorbent material has a smaller area than the drape and is applied onto the skin-facing surface of the drape. The silicone gel backing film has a frame shape and a smaller footprint than the drape and a larger footprint than the island of absorbent material. The release liner has a larger area than the drape. The release liner is coated with a fluorosilicone release coating, which is in contact with the pressure-sensitive acrylic-based adhesive on the drape and is in contact with the silicone gel.Type: GrantFiled: August 28, 2018Date of Patent: May 18, 2021Assignee: Aatru Medical, LLCInventors: John Buan, Richard L. Middaugh, Timothy Wojciechowski, Thomas E. Lash
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Publication number: 20210052432Abstract: A dressing includes a drape, a pressure-sensitive acrylic-based adhesive disposed on a skin-facing surface of the drape, an island of absorbent material including non-woven superabsorbent fibers, and a wound contact layer. The drape is a thin film capable of maintaining a negative pressure underneath the drape upon application of a vacuum. The island of absorbent material has a smaller area than the drape and is connected with and disposed beneath the sin-facing surface of the drape so as to leave a first margin of adhesive-coated drape around the island of absorbent material. The island of absorbent material further includes interruptions to reduce or eliminate tension or compression in the island of absorbent material as the dressing bends. The wound-contact layer is disposed on a skin-facing side of the island of absorbent material. The wound contact layer is configured not to stick to a wound.Type: ApplicationFiled: August 22, 2019Publication date: February 25, 2021Inventors: John Buan, Richard L. Middaugh, Timothy Wojciechowski, Thomas E. Lash
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Patent number: 10881553Abstract: A reduced pressure device includes a dressing and a reactor. The dressing covers a dressing site and defines an enclosed volume beneath the dressing and around the dressing site. The reactor is disposed with respect to the dressing so as to produce a reduced pressure beneath the dressing when activated. The reactor includes a reducing agent and an electrolyte solution. The electrolyte solution is configured to be selectively delivered to the reducing agent, and the reactor begins to react with at least one selected gas in the enclosed volume after the electrolyte solution is delivered to the reducing agent to consume the at least one selected gas within the enclosed volume.Type: GrantFiled: October 3, 2019Date of Patent: January 5, 2021Assignee: Advanced Dressing, LLCInventors: John Buan, Richard L. Middaugh, Timothy Wojciechowski, Thomas E. Lash
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Patent number: 10828202Abstract: A negative pressure assembly includes a drape, a sealing element, a reactor, a valve and a mechanical pump assembly. The drape and the sealing element, when applied to the skin, cooperate to define an enclosed volume. The reactor is located so as to be in fluid communication with the enclosed volume when the drape is covering the dressing site. The reactor reacts with a selected gas found in air to consume the selected gas. The valve has a first operating state in which gas is drawn from the enclosed volume through the valve. The mechanical pump assembly includes a pump chamber fluidly connectable to the enclosed volume through the valve when the valve is in the first operating state. The mechanical pump is configured to fluidly connect with the enclosed volume and draw air from the enclosed volume into the pump chamber.Type: GrantFiled: October 3, 2019Date of Patent: November 10, 2020Assignee: Aatru Medical, LLCInventors: John Buan, Richard L. Middaugh, Timothy Wojciechowski, Thomas E. Lash, Reed Oliver Saunders, Thomas Arthur Tedham
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Publication number: 20200330659Abstract: A pump shell for a wound therapy device includes a shell body having an interior cavity for accommodating a pump adapted to create a negative pressure condition upon actuation thereof. The shell body is configured to be affixed to one or both skin surrounding a tissue site or a skin contacting assembly or element to create a negative pressure condition at the tissue site over which the skin contacting assembly or element is disposed. The shell body also configured to maintain the interior cavity at a minimum specified volume while the pump creates the negative pressure condition.Type: ApplicationFiled: November 28, 2018Publication date: October 22, 2020Inventors: James WU, John BUAN, Richard L. MIDDAUGH, Thomas E. LASH, Timothy WOJCIECHOWSKI
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Publication number: 20200155734Abstract: A negative pressure device includes a drape, a wicking element, a sealing element, a reactor, a chamber and an air permeable liquid impervious element. The drape includes an opening and is made from a flexible material that inhibits passage of liquid and air through the drape other than through the opening. The wicking element is covered by the drape. The sealing element surrounds the wicking element and cooperates with the drape to define an enclosed volume covered by the drape and surrounded by the sealing element. Air within the enclosed volume is inhibited from exiting the enclosed volume other than through the opening. The reactor is configured to react with a gas found in air to consume the gas. The chamber is in fluid communication with the reactor and the enclosed volume via the opening. The chamber is configured to maintain a predefined chamber volume while the gas is being consumed from the enclosed volume.Type: ApplicationFiled: January 27, 2020Publication date: May 21, 2020Inventors: Richard L. Middaugh, Timothy Wojciechowski, Thomas E. Lash, Sundar Manickam, John D. Wolter, John Buan
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Patent number: 10583229Abstract: A negative pressure device includes a drape, a wicking element, a sealing element, a reactor, a chamber and an air permeable liquid impervious element. The drape includes an opening and is made from a flexible material that inhibits passage of liquid and air through the drape other than through the opening. The wicking element is covered by the drape. The sealing element surrounds the wicking element and cooperates with the drape to define an enclosed volume covered by the drape and surrounded by the sealing element. The reactor is configured to react with a gas found in air to consume the gas. The chamber is in fluid communication with the reactor and the enclosed volume via the opening. The chamber is configured to maintain a predefined chamber volume while the gas is being consumed from the enclosed volume.Type: GrantFiled: November 26, 2018Date of Patent: March 10, 2020Assignee: Aatru Medical, LLCInventors: Richard L. Middaugh, Timothy Wojciechowski, Thomas E. Lash, Sundar Manickam, John D. Wolter, John Buan
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Publication number: 20200069479Abstract: A dressing includes a drape, a pressure-sensitive acrylic-based adhesive on a skin-facing surface of the drape, an island of absorbent material, a silicone gel backing film, a silicone gel on the silicone gel backing film, and a release liner. The drape is a thin film capable of maintaining a negative pressure underneath the drape upon application of a vacuum. The island of absorbent material has a smaller area than the drape and is applied onto the skin-facing surface of the drape. The silicone gel backing film has a frame shape and a smaller footprint than the drape and a larger footprint than the island of absorbent material. The release liner has a larger area than the drape. The release liner is coated with a fluorosilicone release coating, which is in contact with the pressure-sensitive acrylic-based adhesive on the drape and is in contact with the silicone gel.Type: ApplicationFiled: August 28, 2018Publication date: March 5, 2020Inventors: John Buan, Richard L. Middaugh, Timothy Wojciechowski, Thomas E. Lash
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Publication number: 20190388278Abstract: A wound therapy device and method includes a skin contacting element, a reactor, and a reactor housing element. The skin contacting element is configured for covering an associated tissue site, the reactor for creating a pressure condition at the associated tissue site upon actuation thereof, and the reactor housing element for accommodating the reactor. The skin contacting element has a skin contacting side and an interface side, which is opposite the skin contacting side. The reactor housing element has a lower affixing side and an upper side, which is opposite the lower affixing side.Type: ApplicationFiled: September 5, 2019Publication date: December 26, 2019Inventors: Russell S. Donda, Sundar Manickam, Richard L. Middaugh, Thomas E. Lash, Timothy Wojciechowski, John D. Wolter, John Buan
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Patent number: 10449094Abstract: A wound therapy device and method includes a skin contacting element, a reactor, and a reactor housing element. The skin contacting element is configured for covering an associated tissue site, the reactor for creating a pressure condition at the associated tissue site upon actuation thereof, and the reactor housing element for accommodating the reactor. The skin contacting element has a skin contacting side and an interface side, which is opposite the skin contacting side. The reactor housing element has a lower affixing side and an upper side, which is opposite the lower affixing side.Type: GrantFiled: October 28, 2016Date of Patent: October 22, 2019Assignee: Lorain County Community College Innovation FoundationInventors: Russell S. Donda, Sundar Manickam, Richard L. Middaugh, Thomas E. Lash, Timothy Wojciechowski, John D. Wolter, John Buan
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Publication number: 20190192746Abstract: A method for providing a negative pressure wherein a pump is cycled on and off to achieve a target negative pressure, which is set slightly lower than the therapeutic negative pressure. A device determines the actual pressure by averaging samples which may occur at a different rate than the pump cycle.Type: ApplicationFiled: December 27, 2018Publication date: June 27, 2019Inventors: John Buan, Richard Willems
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Patent number: 10300178Abstract: A method for providing a negative pressure wherein a pump is cycled on and off to achieve a target negative pressure, which is set slightly lower than the therapeutic negative pressure. A device determines the actual pressure by averaging samples which may occur at a different rate than the pump cycle.Type: GrantFiled: June 11, 2015Date of Patent: May 28, 2019Assignee: Smith & Nephew, Inc.Inventors: John Buan, Richard Willems
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Publication number: 20190134284Abstract: A wound therapy device and a kit for same with a housing material, a gasket disposed around at least a portion of the housing material, a non-woven absorption material, and a port. The gasket is sized and configured such that at least a first portion of the gasket will be adhered to a second portion of the gasket upon a folding of the housing material. A method of using a wound therapy device.Type: ApplicationFiled: October 22, 2018Publication date: May 9, 2019Inventors: John Buan, Alan Carson, Daniel Gelfman
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Publication number: 20190091382Abstract: A negative pressure device includes a drape, a wicking element, a sealing element, a reactor, a chamber and an air permeable liquid impervious element. The drape includes an opening and is made from a flexible material that inhibits passage of liquid and air through the drape other than through the opening. The wicking element is covered by the drape. The sealing element surrounds the wicking element and cooperates with the drape to define an enclosed volume covered by the drape and surrounded by the sealing element. Air within the enclosed volume is inhibited from exiting the enclosed volume other than through the opening. The reactor is configured to react with a gas found in air to consume the gas. The chamber is in fluid communication with the reactor and the enclosed volume via the opening. The chamber is configured to maintain a predefined chamber volume while the gas is being consumed from the enclosed volume.Type: ApplicationFiled: November 26, 2018Publication date: March 28, 2019Inventors: Richard L. Middaugh, Timothy Wojciechowski, Thomas E. Lash, Sundar Manickam, John D. Wolter, John Buan