# US 8,465,465 B2 · Dynamic, reduced-pressure treatment systems and methods > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,465,465 B2 - Document ID: US8465465B2 - Status: Granted - Kind: B2 - Application number: 12/621,340 - Filed: 2009-11-18 - Published: 2010-05-20 - Granted: 2013-06-18 - Earliest claimed: 2008-11-19 - Assignees: KCI Licensing, Inc. - Applicants: Jonathan Scott Olson - Inventors: Jonathan Scott Olson - Web page: https://patentgrep.com/patent/US8465465B2 ## CPC - A61M 1/75: {Intermittent or pulsating suction (A61M1/63, A61M1/772 take precedence)} - A61M 1/74: {Suction control (underwater drainage A61M1/61)} - A61M 1/84: {Drainage tubes; Aspiration tips (for negative pressure wound therapy A61M1/90; for surgical cutting instruments A61B17/32)} - A61M 1/96: {Suction control thereof} - A61M 1/962: {having pumping means on the suction site, e.g. miniature pump on dressing or dressing capable of exerting suction} - A61M 2205/7536: allowing gas passage, but preventing liquid passage, e.g. liquophobic, hydrophobic, water-repellent membranes - Y10T 29/49236: Fluid pump or compressor making - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A dynamic, reduced-pressure treatment system generates reduced pressure and a wave experienced at a tissue site where the wave may have a frequency in the range of from 0.5 Hertz to 20 Hertz. The system includes a manifold for delivering reduced pressure to the tissue site, a sealing member forming a fluid seal over the tissue site, a reduced-pressure source for providing reduced pressure, a reduced-pressure delivery member for delivering reduced pressure from the reduced-pressure source to the manifold, and a wave generator associated with the reduced-pressure delivery member for imparting a wave to the reduced pressure developed by the reduced-pressure source. A reduced-pressure delivery member with liquid-impermeable-and-gas-permeable element may be applied to help reduce blockages and to facilitate ease of treatment. Other systems, apparatuses, and methods are disclosed. ## Claims ### Claim 1 A dynamic, reduced-pressure treatment system for treating a tissue site on a patient, the system comprising: a manifold adapted to be positioned adjacent the tissue site for distributing reduced pressure to the tissue site; a sealing member adapted to be coupled to an epidermis of the patient to cover the manifold and to form a fluid seal between the sealing member and the tissue site; a reduced-pressure source for producing the reduced pressure; a reduced-pressure delivery member for delivering the reduced pressure from the reduced-pressure source to the manifold, the reduced-pressure delivery member adapted to transmit liquid and gas from the tissue site; a liquid-impermeable-and-gas-permeable member adapted to substantially segregate the liquid into a separate liquid flow and the gas into a separate gas flow; and a wave generator in fluid communication with the separate liquid flow, wherein the wave generator imparts a wave to the liquid. ### Claim 2 (depends on 1) The dynamic, reduced-pressure treatment system of claim 1, wherein the wave generator is coupled to the reduced-pressure delivery member in fluid communication between the reduced-pressure source and the sealing member. ### Claim 3 (depends on 1) The dynamic, reduced-pressure treatment system of claim 1, wherein the wave generator is operable to impart a wave to the liquid with a frequency greater than about one Hertz. ### Claim 4 (depends on 1) The dynamic, reduced-pressure treatment system of claim 1, wherein the wave generator imparts a wave to the liquid with a frequency in the range of about 0.5 Hz to about 20 Hz. ### Claim 5 (depends on 1) The dynamic, reduced-pressure treatment system of claim 1, wherein the wave generator imparts a wave to the liquid with a frequency greater than about 20 Hertz. ### Claim 6 (depends on 1) The dynamic, reduced-pressure treatment system of claim 1, wherein the wave generator comprises a piezoelectric transducer in fluid communication with the reduced-pressure delivery member. ### Claim 7 The dynamic, reduced-pressure treatment system of claim wherein the wave generator comprises a diaphragm member in fluid communication with the reduced-pressure delivery member. ### Claim 8 (depends on 1) The dynamic, reduced-pressure treatment system of claim 1, wherein the wave generator comprises a plurality of chambers with valves and wherein each of the chambers is selectively in fluid communication with the reduced-pressure delivery member. ### Claim 9 (depends on 1) The dynamic, reduced-pressure treatment system of claim 1, wherein the reduced-pressure delivery member comprises a conduit, and wherein the conduit comprises: a first lumen for transmitting the liquid, the first lumen having a first interior space; a second lumen for transmitting the gas, the second lumen having a second interior space; and wherein the liquid-impermeable-and-gas-permeable member is coupled to the second lumen in at least a portion of the second interior space. ### Claim 10 (depends on 1) The dynamic, reduced-pressure treatment system of claim 1, wherein the reduced-pressure delivery member comprises a conduit, and wherein the conduit comprises: a first lumen for transmitting the liquid, the first lumen having a first interior space; a second lumen for transmitting the gas, the second lumen having a second interior space; wherein the liquid-impermeable-and-gas-permeable member is coupled to the second lumen in at least a portion of the second interior space; and wherein the wave generator is in fluid communication with the first lumen. ### Claim 11 (depends on 1) The dynamic, reduced-pressure treatment system of claim 1, wherein the reduced-pressure delivery member comprises a conduit, and wherein the conduit comprises: a first lumen for transmitting the liquid, the first lumen having a first interior space; a second lumen for transmitting the gas, the second lumen having a second interior space; wherein the liquid-impermeable-and-gas-permeable member is coupled to the second lumen in at least a portion of the second interior space; and wherein the liquid-impermeable-and-gas-permeable member comprises a synthetic fluoropolymer. ### Claim 12 (depends on 1) The dynamic, reduced-pressure treatment system of claim 1, wherein the reduced-pressure delivery member comprises a conduit, and wherein the conduit comprises: a first lumen for transmitting the liquid, the first lumen having a first interior space; a second lumen for transmitting the gas, the second lumen having a second interior space; wherein the liquid-impermeable-and-gas-permeable member is coupled to the second lumen in at least a portion of the second interior space; wherein the liquid-impermeable-and-gas-permeable member comprises a synthetic fluoropolymer; and wherein the synthetic fluoropolymer comprises a poly-tetrafluoroethylene material (PTFE). ### Claim 13 (depends on 1) The dynamic, reduced-pressure treatment system of claim 1, wherein the reduced-pressure delivery member comprises: a first lumen for transmitting the gas, the first lumen having a first interior space; a second lumen for transmitting the liquid, the second lumen having a second interior space; the first lumen comprising a fluid impermeable material; and the second lumen formed from the liquid-impermeable-and-gas-permeable member and disposed within the first interior space. ### Claim 14 (depends on 1) The dynamic, reduced-pressure treatment system of claim 1, wherein the reduced-pressure delivery member comprises: an outer lumen having a first interior space and formed from a fluid impermeable material and wherein the first interior space comprises a liquid flow path; an inner flow member comprising a lumen formed from the liquid-impermeable-and-gas-permeable member and disposed within the first interior space; and wherein the wave generator is in fluid communication with the liquid flow path. ### Claim 15 (depends on 1) The dynamic, reduced-pressure treatment system of claim 1, wherein the reduced-pressure delivery member comprises: an outer lumen having a first interior space and formed from a fluid impermeable material and wherein the first interior space comprises a liquid flow path; an inner flow member comprising a lumen formed from the liquid-impermeable-and-gas-permeable member and disposed within the first interior space; wherein the wave generator is in fluid communication with the liquid flow path; and wherein the liquid-impermeable-and-gas-permeable member comprises a synthetic fluoropolymer. ### Claim 16 (depends on 1) The dynamic, reduced-pressure treatment system of claim 1, wherein the reduced-pressure delivery member comprises: an outer lumen having a first interior space and formed from a fluid impermeable material and wherein the first interior space comprises a liquid flow path; an inner flow member comprising a lumen formed from the liquid-impermeable-and-gas-permeable member and disposed within the first interior space; wherein the wave generator is in fluid communication with the liquid flow path; wherein the liquid-impermeable-and-gas-permeable member comprises a synthetic fluoropolymer; and wherein the synthetic fluoropolymer comprises a poly-tetrafluoroethylene material (PTFE). ### Claim 17 A method of manufacturing a dynamic, reduced-pressure treatment system for treating a tissue site on a patient, the method comprising the steps of: providing a manifold for placing adjacent to the tissue site and operable to distribute reduced pressure to the tissue site; providing a sealing member for coupling to an epidermis of the patient and operable to cover the manifold and to form a fluid seal between the sealing member and the tissue site; providing a reduced-pressure source for developing a reduced pressure; providing a reduced-pressure delivery member for delivering reduced pressure from the reduced-pressure source to the manifold, the reduced-pressure delivery member comprising a first lumen and a second lumen; segregating the first lumen from the second lumen with a liquid-impermeable-and-gas-permeable member, the liquid-impermeable-and-gas-permeable member adapted to substantially preclude liquid from entering the second lumen to provide a liquid flow in the first lumen and a gas flow in the second lumen; and coupling a wave generator in fluid communication with the first lumen, the wave generator for imparting a wave to the liquid flow in the first lumen. ### Claim 18 A method for treating a tissue site on a patient, the method comprising the steps of: disposing a manifold adjacent to the tissue site, wherein the manifold is operable to distribute reduced pressure to the tissue site; placing a sealing member on an epidermis of the patient to cover the manifold and to form a fluid seal between the sealing member and the tissue site; fluidly coupling a reduced-pressure delivery member to the manifold; fluidly coupling the reduced-pressure delivery member to a reduced-pressure source; providing reduced pressure to the manifold from the reduced-pressure source; substantially segregating liquid and gas carried by the reduced pressure and transmitted through the reduced-pressure delivery member from the tissue site into a separate liquid flow and a separate gas flow in the reduced pressure delivery member; and coupling a wave generator in fluid communication with the separate liquid flow for imparting a wave to the liquid flow. ### Claim 19 (depends on 18) The method of claim 18, wherein the step of coupling a wave generator comprises fluidly coupling the wave generator to the reduced-pressure delivery member between the reduced-pressure source and the sealing member. ### Claim 20 (depends on 18) The method of claim 18, wherein the wave generator imparts a wave to the liquid flow with a frequency greater than about one Hertz. ### Claim 21 (depends on 18) The method of claim 18, wherein the wave generator imparts a wave to the liquid flow with a frequency in the range of about 0.5 to about 20 Hertz. ### Claim 22 (depends on 18) The method of claim 18, wherein the wave generator imparts a wave to the liquid flow with a frequency greater than about 20 Hertz. ### Claim 23 (depends on 18) The method of claim 18, wherein the wave generator comprises a piezoelectric transducer in fluid communication with the reduced-pressure delivery member. ### Claim 24 (depends on 18) The method of claim 18, wherein the wave generator comprises a diaphragm member in fluid communication with the reduced-pressure delivery member. ### Claim 25 (depends on 18) The method of claim 18, wherein the wave generator comprises a plurality of chambers with valves and wherein each of the chambers selectively in fluid communication with the reduced-pressure delivery member.