Patents Assigned to Aatru Medical, LLC
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Patent number: 11819602Abstract: 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: August 18, 2021Date of Patent: November 21, 2023Assignee: Aatru Medical, LLCInventors: John Buan, Richard L. Middaugh, Timothy Wojciechowski, Thomas E. Lash, Reed Oliver Saunders, Thomas Arthur Tedham
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Patent number: 11813396Abstract: 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: GrantFiled: February 4, 2021Date of Patent: November 14, 2023Assignee: AATRU MEDICAL, LLCInventors: John Buan, Richard L. Middaugh, Timothy Wojciechowski, Thomas E. Lash
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Patent number: 11759369Abstract: 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: April 1, 2022Date of Patent: September 19, 2023Assignee: AATRU MEDICAL, LLCInventors: John Buan, Richard L. Middaugh, Timothy Wojciechowski, Thomas E. Lash, Reed Oliver Saunders, Thomas Arthur Tedham
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Patent number: 11759368Abstract: 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: June 18, 2021Date of Patent: September 19, 2023Assignee: AATRU MEDICAL, LLCInventors: Russell S. Donda, Sundar Manickam, Richard L. Middaugh, Thomas E. Lash, Timothy Wojciechowski, John D. Wolter, John Buan
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Patent number: 11666680Abstract: 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: GrantFiled: February 22, 2021Date of Patent: June 6, 2023Assignee: AATRU MEDICAL, LLCInventors: John Buan, Richard L. Middaugh, Timothy Wojciechowski, Thomas E. Lash
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Patent number: 11497843Abstract: A negative pressure device for applying to skin is configured to define a sealed enclosed three-dimensional space when at least a portion of the device is sealed against the skin. The device includes a body including at least one expandable segment that is configured to expand after the device has been sealed against the skin.Type: GrantFiled: October 16, 2019Date of Patent: November 15, 2022Assignee: AATRU MEDICAL, LLCInventors: Timothy Wojciechowski, Richard L. Middaugh, Thomas E. Lash, John Buan
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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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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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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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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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Patent number: 10046095Abstract: A wound covering assembly includes a wound covering membrane and a removable layer. The wound covering membrane can allow liquid or air to pass through the wound covering membrane from a wound site covered by the wound covering membrane to ambient and vice versa. The removable layer covers a portion of the wound covering membrane and is removable from the wound covering membrane when the wound covering membrane is affixed to skin around the wound site. The removable layer is configured and connected with the wound covering membrane such that air and liquid are inhibited from passing through the wound covering membrane and the removable layer when the wound covering membrane is affixed to skin surrounding the wound site and the removable layer is connected with the wound covering membrane. The wound covering assembly can be used with a pump assembly to provide negative pressure to the wound site.Type: GrantFiled: April 4, 2017Date of Patent: August 14, 2018Assignee: Aatru Medical, LLCInventors: Richard L. Middaugh, Timothy Wojciechowski, Thomas E. Lash, Sundar Manickam, John D. Wolter, John Buan