Negative pressure assisted tissue treatment system
DCFirst Claim
1. A system for stimulating the healing of tissue, comprising:
- a porous pad;
an airtight dressing;
a distal end of a conduit connected to the dressing;
a canister removably connected to a proximal end of the conduit;
an electric pump for applying negative pressure to a wound site;
a hydrophobic filter positioned between said canister and said electric pump; and
an odor vapor filter positioned between said hydrophobic filter and said electric pump.
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Accused Products
Abstract
A system for stimulating the healing of tissue comprises a porous pad positioned within a wound cavity, and an airtight dressing secured over the pad, so as to provide an airtight seal to the wound cavity. A proximal end of a conduit is connectable to the dressing. A distal end of the conduit is connectable to a negative pressure source, which may be an electric pump housed within a portable housing, or wall suction. A canister is positioned along the conduit to retain exudates suctioned from the wound site during the application of negative pressure. A first hydrophobic filter is positioned at an opening of the canister to detect a canister full condition. A second hydrophobic filter is positioned between the first filter and the negative pressure source to prevent contamination of the non-disposable portion of the system by exudates being drawn from the wound. An odor filter is positioned between the between the first and second hydrophobic filters to aid in the reduction of malodorous vapors. A securing means is supplied to allow the portable housing to be secured to a stationary object, such as a bed rail or intravenous fluid support pole. A means for automated oscillation of pressure over time is provided to further enhance and stimulate the healing of an open wound. A means for varying pump drive frequency and a means for managing a portable power supply are provided to increase battery life and improve patient mobility.
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Citations
35 Claims
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1. A system for stimulating the healing of tissue, comprising:
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a porous pad;
an airtight dressing;
a distal end of a conduit connected to the dressing;
a canister removably connected to a proximal end of the conduit;
an electric pump for applying negative pressure to a wound site;
a hydrophobic filter positioned between said canister and said electric pump; and
an odor vapor filter positioned between said hydrophobic filter and said electric pump. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A system for stimulating the healing of tissue, comprising:
- a porous pad;
an airtight dressing;
a distal end of a drainage tube connected to said dressing;
a canister removably connected to a proximal end of the drainage tube;
a self-contained pumping mechanism for applying negative pressure to the wound site;
the pumping mechanism including an electric motor;
a power management motor control that determines a tentative motor drive power for reaching a target pressure and which withholds electric power from the electric motor unless the tentative motor drive power is sufficient to activate said electric motor; and
an access port for sampling wound fluids, said access port being connected to said drainage tube and having a resealable membrane operable to maintain a seal after being punctured. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
- a porous pad;
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24. A system for stimulating the healing of tissue, comprising:
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a porous pad;
an airtight dressing;
an electric pump for applying negative pressure to a wound site;
a canister removably connected to said electric pump;
a housing for containment of said canister and said electric pump;
a clamp for securing said bowing to a pole;
a power management motor control that determines a tentative drive power for reaching a target pressure and which withholds electric power from said electric pump unless the tentative drive power is sufficient to activate said electric pump; and
a resealable access port for sampling wound fluids, said access port being connected to said conduit and having a resealable membrane operable to maintain a seal after being punctured. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification