公开(公告)号：EP3943131A1

公开(公告)日：2022-01-26

申请号：EP21194364.2

申请日：2013-12-13

Applicant: 3M Innovative Properties Co.

Inventor： LOCKE, Christopher Brian ,  COULTHARD, Richard Daniel John ,  ROBINSON, Timothy Mark

IPC: A61M1/00

Abstract: A system is illustratively described herein that generally comprises a vacuum chamber, an ambient pressure chamber, a valve configured for unidirectional flow from the vacuum chamber to the ambient pressure chamber during a charging stroke, and a liquid filter configured to retain liquid in the pump. In some embodiments, the liquid filter is configured to retain liquid in the vacuum chamber during the charging stroke. In other embodiments, it may be configured to retain liquid in the ambient pressure chamber during an operating stroke. In more particular embodiments, a piston may be disposed between the vacuum chamber and the ambient pressure chamber, a passage may fluidly couple the vacuum chamber and the ambient pressure chamber, and the valve can be configured to control fluid flow through the passage. Additionally, a lumen may couple the vacuum chamber to a dressing to deliver negative pressure to the dressing in some illustrative embodiments.

公开(公告)号：EP3821859A1

公开(公告)日：2021-05-19

申请号：EP20212577.9

申请日：2014-09-19

Applicant: 3M Innovative Properties Co.

Inventor： LOCKE, Christopher, Brian ,  COULTHARD, Richard Daniel John

IPC: A61F13/00 ,  A61F13/02

Abstract: A dressing for treating a tissue site may include a base layer, a sealing member, a first and a second wicking layer, and an absorbent layer. The base layer may have a periphery surrounding a central portion and a plurality of apertures disposed through the periphery and the central portion. The apertures in the periphery may be larger than the apertures in the central portion. The sealing member and the base layer may define an enclosure. The first and the second wicking layer may each be disposed in the enclosure with the absorbent layer positioned between the first and the second wicking layer. Other dressings and systems are disclosed.

公开(公告)号：EP4018985A1

公开(公告)日：2022-06-29

申请号：EP21209807.3

申请日：2014-02-13

Applicant: 3M Innovative Properties Co.

Inventor： LOCKE, Christopher Brian ,  ROBINSON, Timothy Mark ,  COULTHARD, Richard Daniel John

IPC: A61F13/00 ,  A61F13/02 ,  A61M1/00 ,  A61M27/00 ,  A61L15/58

Abstract: A dressing may be suitable for use with systems treating a tissue site Embodiments of the dressing may include a base layer, an adhesive, a sealing member, a first wicking layer, a second wicking layer, and an absorbent layer. The base layer may have a plurality of apertures and may be adapted to cover the tissue site. The adhesive may be positioned between the sealing member and the base layer such that the sealing member and the base layer define an enclosure. The first and the second wicking layer may each be disposed in the enclosure with the absorbent layer positioned between the first and the second wicking layer. Other dressings and systems are disclosed.

公开(公告)号：EP3932442A1

公开(公告)日：2022-01-05

申请号：EP21192322.2

申请日：2018-02-21

Applicant: 3M Innovative Properties Co.

Inventor： LONG, Justin Alexander ,  LOCKE, Christopher Brian ,  ROBINSON, Timothy Mark ,  COULTHARD, Richard Daniel John

IPC: A61M1/00

Abstract: In an example is a system for providing treatment to a tissue site. The system may include a tissue interface for transporting fluid to the tissue site. The system may further include a cover for providing a sealed space including the tissue interface. The system may further include a negative-pressure source fluidly coupled to the tissue interface and providing negative pressure. The system may further include a hyperoxic fluid source fluidly coupled to the tissue interface and providing a hyperoxic fluid. The system may further include a controller for controlling the negative pressure and the hyperoxic fluid so as to maintain the sealed space at a negative pressure while the hyperoxic fluid is provided to the sealed space.

公开(公告)号：EP3827795A1

公开(公告)日：2021-06-02

申请号：EP20208839.9

申请日：2017-06-01

Applicant: 3M Innovative Properties Co.

Inventor： COULTHARD, Richard Daniel John ,  LOCKE, Christopher Brian

IPC: A61F13/00 ,  A61M1/00 ,  A61M27/00 ,  A61F13/02

Abstract: In some illustrative examples, a conduit interface may include a mounting surface and an exterior-facing surface positioned across from the mounting surface, an internal cavity, an inlet port, a vent, and a temporary plug. The internal cavity may include an opening positioned proximate to the mounting surface. The inlet port may be in in fluid communication with the internal cavity through the exterior-facing surface. The vent may be in fluid communication with the internal cavity through the exterior-facing surface. The temporary plug may be configured to temporarily preclude fluid communication through the vent. The conduit interface may be suitable for providing fluid communication with a dressing at a tissue site. Also provided are other examples, apparatus, systems, and methods.