MOLECULAR EXCHANGE DEVICE

• US 20110049040A1
• Filed: 02/05/2009
• Published: 03/03/2011
• Est. Priority Date: 02/13/2008
• Status: Active Grant

• Current Assignee: Cornel Medical Limited
• Original Assignee: Probe Scientific Limited
• Inventors: Ruston, Rodney, O'Connell, Mark Thomas, Block, Stewart Jeffrey
• Granted Patent: US 8,961,791 B2
• Time in Patent Office: Days
• US Class Current: 210/437
• CPC Class Codes: A61B 5/0075 by spectroscopy, i.e. measuring spectra, e.g. Raman spectroscopy, infrared absorption spectroscopy A61B5/0071 takes precedence
• CPC Class Codes: A61B 5/0084 for introduction into the body, e.g. by catheters A61B5/1459 takes precedence
• CPC Class Codes: A61B 5/14503 invasive, e.g. introduced into the body by a catheter or needle or using implanted sensors A61B5/1459, A61B5/1464, A61B5/1473, A61B5/1482, A61B5/14865 take precedence
• CPC Class Codes: A61B 5/14528 invasively
• CPC Class Codes: A61M 25/00 Catheters; Hollow probes dilators A61M29/00; peritoneal catheters A61M1/285; tracheal tubes A61M16/04; for drainage A61M27/00; for uterus, vagina or rectum A61M31/00 ; for measuring or testing A61B; materials for catheters A61L29/00

Abstract

The present relates to a molecular exchange device. In particular, the present invention relates to a molecular exchange device comprising an outer tube extending from an approximal end to a distal end of the device; an inner tube defining at least one fluid passageway, the inner tube positioned concentrically within the outer tube and the area between the inner and the outer tube defining at least one fluid passageway; and a projection positioned within the area between the inner and the outer tube, wherein the projection prevents displacement of the inner tube with respect to the outer tube.

Claims

1. A molecular exchange device comprising:

an outer tube extending from a proximal end to a distal end of the device;

an inner tube defining at least one fluid passageway,

the inner tube positioned concentrically within the outer tube and the area between the inner and the outer tube defining at least one fluid passageway; and

a projection positioned within the area between the inner and the outer tube, wherein the projection prevents displacement of the inner tube with respect to the outer tube.

2. A molecular exchange device according to claim 1, wherein the projection extends from the outer tube and/or the inner tube.

3. A molecular exchange device according to claim 1, wherein the projection is integral with the outer and/or inner tube.

4. A molecular exchange device according to claim 1, wherein the projection is positioned at the distal and/or proximal end of the device.

5. A molecular exchange device according to claim 1, wherein the projection extends along substantially the entire length of the outer and/or inner tube.

6. A molecular exchange device according to claim 1, wherein the projection extends continuously along the length of outer and/or inner tube.

7. A molecular exchange device according to claim 1, wherein the projection extends discontinuously along the length of the outer and/or inner tube.

8. A molecular exchange device according to claim 1, wherein the projection is a single protrusion extending radially from the outer or inner tube.

9. A molecular exchange device according to claim 1, wherein the projection is two or more protrusions each extending radially from the outer or inner tube.

10. A molecular exchange device according to claim 9, wherein the two or more protrusions define two or more separate fluid passageways in the area between the outer tube and inner tube.

11. A molecular exchange device according to claim 7, wherein the protrusion is positioned around the inner tube in a spiral arrangement.

12. A molecular exchange device according to claim 4, wherein the projection is a porous mesh positioned around the circumference of the inner tube.

13. A molecular exchange device according to claim 7, wherein the projection is in the form of a plurality of protuberants.

14. A molecular exchange device according to claim 13, wherein the plurality of protuberants are positioned in a uniform manner around the circumference of the inner tube.

15. A molecular exchange device according to claim 1, further comprising an impeller.

16. A molecular exchange device according to claim 15, wherein the impeller is positioned within the outer tube.

17. A molecular exchange device according to claim 1, wherein the inner tube defines a plurality of fluid passageways.

18. A molecular exchange device according to claim 1, wherein the outer tube is a porous membrane.

19. A molecular exchange device according to claim 18, wherein the outer tube is a dialysis membrane.

20. A molecular exchange device according to claim 1, further comprising a casing.

21. A molecular exchange device according to claim 1, wherein:

the proximal end of the device is adapted for attachment to a catheter and/or cannular;

the proximal end of the device is a lockable-mating arrangement and or anchoring member for connecting to an invasive port;

the proximal end of the device is adapted for attachment to a pump; and

/or

the proximal end of the device is adapted for attachment to an external device.

25. A molecular exchange device according to claim 1, further comprising a sensor arrangement to enable spectrologic measurement.

26. A molecular exchange device according to claim 25, wherein the spectrologic measurement is spectrophotometric measurement.

22-24. -24. (canceled)

27. (canceled)