Absorbable, reduced-pressure manifolds and systems
View Patent ↗A reduced-pressure treatment system includes an isolation device for isolating a tissue site from surrounding tissue for reduced-pressure treatment that is formed from a first material having a first bio-absorption term and at least a second material having a second and different bio-absorption term. The different materials allow the isolation device initially to function well for reduced-pressure treatment and then to experience degradation at a quicker pace which facilitates healing. In addition, a reduced-pressure manifold for treating a tissue site is presented that includes a flexible barrier member formed from a first material, which has a first bio-absorption term and formed with a first plurality of apertures; a second material, which has a second bio-absorption term, disposed within the plurality of apertures; wherein the first bio-absorption term is greater than the second bio-absorption term; and a reduced-pressure delivery member coupled to the barrier member for delivering reduced pressure to the second surface of the barrier member during reduced-pressure treatment.
1. A system for treating a tissue site comprising bone tissue, comprising:
an isolation device for isolating a tissue site from surrounding tissue for reduced-pressure treatment, the isolation device comprising:
a first material having a first surface,
a second surface adapted to face the tissue site and further having a first bio-absorption term (BA 1 ), and further comprising a second material having at least a first portion extending between the first surface and the second surface of the first material and further having a second bio-absorption term (BA 2 ) in the range from more than one day to not more than 14 days, wherein the first bio-absorption term is greater than the second bio-absorption term (BA 1 > BA 2 ), and
a spine portion forming a recessed arcuate channel,
a reduced-pressure source for providing a reduced pressure to treat the bone tissue at the tissue site; and
a reduced-pressure delivery conduit configured to be positioned within a portion of the recessed arcuate channel and to fluidly couple the isolation device and the reduced-pressure source for delivering a reduced pressure over the second surface via an orifice positioned along a longitudinal axis of the reduced-pressure delivery conduit.
2. The system of claim 1 wherein the isolation device comprises a flexible barrier member, the flexible barrier member comprising: a barrier body formed from the first material and wherein the flexible barrier member is formed with a first plurality of apertures; and wherein the first portion of the second material is disposed within the first plurality of apertures and operable to form a temporary seal.
3. The system of claim 1 wherein the isolation device comprises a flexible barrier member, the flexible barrier member comprising: a barrier body formed from the first material and wherein a plurality of projections extend from the second, tissue-facing surface, the plurality of projections formed from at least a second portion of the second material.
4. The system of claim 3 wherein the flexible barrier member is formed with a first plurality of apertures, and wherein the first portion of the second material is disposed within the first plurality of apertures and is operable to form a temporary seal.
5. The system of claim 1 ,
wherein the isolation device comprises a flexible barrier member, the flexible barrier member comprising: a barrier body formed from the first material and wherein the flexible barrier member is formed with a first plurality of apertures;
wherein the first portion of the second material is disposed within the first plurality of apertures and operable to form a temporary seal;
wherein the flexible barrier member further comprises a third material having a third bio-absorption term (BA 3 );
wherein the flexible barrier member is formed with a second plurality of apertures;
wherein the third material is disposed within the second plurality of apertures; and
wherein the first bio-absorption term is greater than the third bio-absorption term (BA 1> BA 3 ).
6. The system of claim 1 wherein the isolation device comprises a woven fabric comprising a first thread material formed from the first material and a second thread material formed from the second material; and wherein the first material has the first bio-absorption term and the second material has the second bio-absorption term.
7. The system of claim 1 wherein isolation device comprises a barrier body having a plurality of a first material units formed from the first material and a plurality of second material units formed from the second material; wherein the plurality of a first material units and the plurality of second material units laterally abut one another.
8. The system of claim 1 wherein isolation device comprises a barrier body formed from the first material and formed with a plurality of apertures; and a coating layer of the second material disposed on the first surface of the barrier body and disposed in the plurality of apertures.
9. The system of claim 1 wherein the isolation device comprises:
a flexible barrier member formed from the first material and wherein the barrier member is formed with a first plurality of apertures; and
wherein the second material is disposed within the first plurality of apertures and operable to form a temporary seal.
10. The system of claim 1 wherein the isolation device comprises a flexible barrier member, the flexible barrier member comprises the spine portion, a first wing and a second wing, wherein the first wing and the second wing are positioned along opposite sides of the spine portion.
11. A method for treating a tissue site with reduced pressure, the method comprising:
positioning a reduced-pressure manifold for isolating a tissue site from surrounding tissue for reduced-pressure treatment proximate the tissue site with a reduced-pressure delivery member, the reduced-pressure manifold comprising:
a first material having a first surface,
a second surface adapted to face the tissue site and further having a first bio-absorption term (BA 1 ), and further comprising a second material having at least a first portion extending between the first surface and the second surface of the first material and further having a second bio-absorption term (BA 2 ) in the range from more than one day to not more than 14 days, and
a spine portion forming a recessed arcuate channel,
positioning a reduced-pressure delivery conduit within a portion of the recessed arcuate channel;
providing reduced-pressure to the reduced-pressure manifold from a reduced pressure source via an orifice positioned along a longitudinal axis of the reduced-pressure delivery conduit;
removing the reduced-pressure delivery conduit;
removing the reduced-pressure delivery member;
allowing the first material to absorb within a first bio-absorption term (BA 1 ); and
allowing the second material to absorb within a second bio-absorption term (BA 2 ) that is less than the first bio-absorption term (BA 2< BA 1 ).
12. The method of claim 11 further comprising: fluidly coupling the reduced-pressure delivery member to the reduced-pressure manifold.
13. The method of claim 12 further comprising: following application of reduced pressure and prior to allowing the first and second materials to absorb, removing the reduced-pressure delivery member.
14. The method of claim 11 wherein positioning the reduced-pressure manifold further comprises using the reduced-pressure delivery member to deploy the reduced-pressure manifold proximate the tissue site.
15. The method of claim 11 wherein the reduced-pressure manifold comprises:
a barrier member formed from the first material and having a first surface and a second, tissue-facing surface and wherein the barrier member is formed with a first plurality of apertures, and
wherein the second material is disposed within the first plurality of apertures and is operable to form a temporary seal.