DELIVERY TUBE, SYSTEM, AND METHOD FOR STORING LIQUID FROM A TISSUE SITE

• US 20090124988A1
• Filed: 11/21/2008
• Published: 05/14/2009
• Est. Priority Date: 02/09/2007
• Status: Active Grant

• Current Assignee: Solventum Intellectual Properties Company (Solventum Corp.)
• Original Assignee: KCI Licensing Incorporated (3M Company)
• Inventors: Coulthard, Richard Daniel John
• Granted Patent: US 8,267,908 B2
• Time in Patent Office: Days
• US Class Current: 604/313
• CPC Class Codes: A61M 1/915 Constructional details of the pressure distribution manifold
• CPC Class Codes: A61M 1/94 with gas supply means
• CPC Class Codes: A61M 1/982 with means for detecting level of collected exudate
• CPC Class Codes: A61M 2025/0034 characterized by elements which are assembled, connected or fused, e.g. splittable tubes, outer sheaths creating lumina or separate cores
• CPC Class Codes: A61M 2025/0036 with more than four lumina
• CPC Class Codes: A61M 2025/0246 fixed on the skin having a cover for covering the holding means
• CPC Class Codes: A61M 25/003 characterized by features relating to least one lumen located at the distal part of the catheter, e.g. filters, plugs or valves catheter tips A61M25/0067
• CPC Class Codes: A61M 25/0032 characterized by at least one unconventionally shaped lumen, e.g. polygons, ellipsoids, wedges or shapes comprising concave and convex parts
• CPC Class Codes: A61M 25/02 Holding devices, e.g. on the body
• CPC Class Codes: A61M 27/00 Drainage appliance for wounds or the like , i.e. wound drains, implanted drains negative pressure wound therapy devices A61M1/90; implements for holding wound open A61B17/02 ; middle ear drainage A61F11/202
• CPC Class Codes: Y10T 29/49826 Assembling or joining

Abstract

An apparatus, system, and method for storing liquid from a tissue site are presented. The apparatus includes a delivery tube that may have at least one lumen. The delivery tube may be operable to transmit reduced pressure to the tissue site and to receive liquid from the tissue site. The apparatus may also include an absorbent material disposed in the at least one lumen. The absorbent material may be operable to absorb the liquid from the tissue site. The delivery tube may be formed with a number of recesses.

Claims

1. A reduced-pressure treatment system substantially as shown and described above.

2. A system for storing liquid from a tissue site, the system comprising:

a reduced pressure source operable to supply reduced pressure;

a manifold adapted to distribute the reduced pressure;

a delivery tube having at least one lumen, the delivery tube operable to transmit the reduced pressure from the reduced pressure source to the manifold, the delivery tube operable to receive the liquid from the tissue site via the manifold; and

an absorbent material disposed in the at least one lumen, the absorbent material operable to absorb the liquid from the tissue site.

3. An apparatus for storing liquid from a tissue site, the apparatus comprising:

a delivery tube having at least one lumen, the delivery tube operable to transmit reduced pressure to the tissue site and to receive liquid from the tissue site; and

an absorbent material disposed in the at least one lumen, the absorbent material operable to absorb the liquid from the tissue site.

4. The apparatus of claim 3, wherein the absorbent material at least partially covers an inner surface of the at least one lumen.

5. The apparatus of claim 3, wherein the at least one lumen includes a plurality of recesses.

6. The apparatus of claim 5, wherein the at least one lumen includes a plurality of ribs, wherein the plurality of recesses are separated from one another by a rib in the plurality of ribs.

7. The apparatus of claim 6, wherein the absorbent material is disposed in at least a portion of the plurality of recesses.

8. The apparatus of claim 7, wherein the absorbent material is disposed in all of the plurality of recesses.

9. The apparatus of claim 7, wherein the at least one lumen includes a central reduced pressure passage when the absorbent material is saturated with the liquid from the tissue site.

10. The apparatus of claim 5, wherein at least one wall of each of the plurality of recesses has a substantially semi-circular cross-sectional shape.

11. The apparatus of claim 10, wherein each of the plurality of recesses is an elongated recess that extends along at least a portion of the length of the delivery tube.

12. The apparatus of claim 11, wherein each of the plurality of recesses extends along an entire length of the delivery tube.

13. The apparatus of claim 4, wherein the absorbent material covers an entire inner surface of the at least one lumen.

14. The apparatus of claim 5, wherein the absorbent material is an absorbent core disposed in the at least one lumen.

15. The apparatus of claim 14, wherein the absorbent core expands as the absorbent core absorbs liquid from the tissue site.

16. The apparatus of claim 14, wherein the absorbent core is a cylindrical absorbent core, and wherein the cylindrical absorbent core is flexible.

17. The apparatus of claim 16, wherein the absorbent core has a substantially circular cross-sectional shape.

18. The apparatus of claim 14, wherein at least one of the plurality of recesses is a reduced pressure delivery recess for delivering the reduced pressure, and wherein the liquid from the tissue site is unable to enter the reduced pressure delivery recess.

19. The apparatus of claim 18, wherein at least one of the plurality of recesses is a collection recess for storing liquid from the tissue site.

20. The apparatus of claim 3, wherein the liquid is exudate from a wound.

21. The apparatus of claim 3, wherein the absorbent material includes at least one of super absorbent fiber, super absorbent particulates, hydrofiber, sodium carboxymethyl cellulose, and alginates.

22. A method for storing liquid from a tissue site, the method comprising:

placing a delivery tube in fluid communication with a tissue site, the delivery tube having at least one lumen, the delivery tube operable to transmit reduced pressure to the tissue site and to receive liquid from the tissue site, the delivery tube including an absorbent material disposed in the at least one lumen;

supplying a reduced pressure to the at least one lumen such that liquid from the tissue site is drawn into the at least one lumen; and

absorbing the liquid from the tissue site using the absorbent material such that the liquid from the tissue site is stored in the at least one lumen.

23. The method of claim 22, further comprising:

applying a manifold to the tissue site, wherein placing the delivery tube in fluid communication with the tissue site includes placing the delivery tube in fluid communication with the tissue site via the manifold.

24. A method of manufacturing a delivery tube for storing liquid from a tissue site, the method comprising:

forming a delivery tube having at least one lumen, the delivery tube operable to transmit reduced pressure to the tissue site and to receive liquid from the tissue site;

providing an absorbent material, the absorbent material operable to absorb the liquid from the tissue site; and

applying the absorbent material in the at least one lumen.

25. The method of claim 24, wherein the absorbent material is an absorbent core.

26. The method of claim 24, wherein applying the absorbent material in the at least one lumen includes coating at least a portion of an inner surface of the at least one lumen with the absorbent material.

27. A system for storing liquid from a tissue site, the system comprising:

a reduced pressure source operable to supply reduced pressure;

a manifold adapted to distribute the reduced pressure; and

a delivery tube having at least one lumen, the delivery tube operable to transmit the reduced pressure from the reduced pressure source to the manifold, the delivery tube operable to receive the liquid from the tissue site via the manifold.