Systems, devices, and methods including infection-fighting and monitoring shunts

• US 9,687,670 B2
• Filed: 05/21/2010
• Issued: 06/27/2017
• Est. Priority Date: 08/17/2007
• Status: Active Grant

• Current Assignee: Gearbox LLC (Intellectual Ventures LLC)
• Original Assignee: Gearbox LLC (Intellectual Ventures LLC)
• Inventors: Hyde, Roderick A., Ishikawa, Muriel Y., Dacey, Jr., Ralph G., Rivet, Dennis J., Smith, Michael A., Wood, Victoria Y. H., Kare, Jordin T., Leuthardt, Eric C., Myhrvold, Nathan P., Sweeney, Elizabeth A., Tegreene, Clarence T., Wood, Jr., Lowell L.
• Primary Examiner(s): DEAK, LESLIE R
• Application Number:
  US12/800,798
• Publication Number:
  US 20100241055A1
• Time in Patent Office: 2,594 Days
• Field of Search: 604 608, 604 8, 604 9, 604 20
• CPC Class Codes: A61B 18/20 using laser
• CPC Class Codes: A61B 5/0084 for introduction into the body, e.g. by catheters A61B5/1459 takes precedence
• CPC Class Codes: A61B 5/053 Measuring electrical impedance or conductance of a portion of the body
• CPC Class Codes: A61B 5/145 Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissuemeasuring of blood pressure or blood flow A61B5/02; non-radiation detecting or locating of foreign bodies in blood A61B5/06
• 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 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/14539 for measuring pH
• CPC Class Codes: A61B 5/14546 for measuring analytes not otherwise provided for, e.g. ions, cytochromes
• CPC Class Codes: A61B 5/1459 invasive, e.g. introduced into the body by a catheter A61B5/1464 takes precedence
• CPC Class Codes: A61B 5/1473 invasive, e.g. introduced into the body by a catheter A61B5/1482 takes precedence
• CPC Class Codes: A61B 5/412 Detecting or monitoring sepsis
• CPC Class Codes: A61L 2/0011 using physical methods
• CPC Class Codes: A61L 2/08 Radiation
• CPC Class Codes: A61L 2/14 Plasma, i.e. ionised gases
• CPC Class Codes: A61L 2202/24 Medical instruments, e.g. endoscopes, catheters, sharps
• CPC Class Codes: A61M 27/006 Cerebrospinal drainage; Accessories therefor, e.g. valves
• CPC Class Codes: A61M 5/14276 specially adapted for implantation
• CPC Class Codes: A61N 1/205 for promoting a biological process
• CPC Class Codes: A61N 1/37252 Details of algorithms or data aspects of communication system, e.g. handshaking, transmitting specific data or segmenting data
• CPC Class Codes: A61N 1/3785 generated by biological activity or substance, e.g. body movement
• CPC Class Codes: A61N 1/3787 : from an external energy source
• CPC Class Codes: A61N 1/40 : Applying electric fields by inductive or capacitive coupling microwave apparatus A61N5/00; Applying radio-frequency signals
• CPC Class Codes: A61N 1/403 : for thermotherapy, e.g. hyperthermia
• CPC Class Codes: A61N 2005/0651 : Diodes
• CPC Class Codes: A61N 2005/0652 : Arrays of diodes
• CPC Class Codes: A61N 2005/0661 : ultraviolet
• CPC Class Codes: A61N 5/02 : using microwaves
• CPC Class Codes: A61N 5/0601 : Apparatus for use inside the body
• CPC Class Codes: A61N 5/0624 : for eliminating microbes, germs, bacteria on or in the body
• CPC Class Codes: A61N 5/10 : X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy A61N5/01 takes precedence
• CPC Class Codes: A61N 7/00 : Ultrasound therapy lithotripsy A61B17/22, A61B17/225; massage using supersonic vibration A61H23/00 ; using ultrasound for introducing media into the body A61M37/0092

Abstract

Systems, devices, methods, and compositions are described for providing an actively controllable shunt configured to, for example, monitor, treat, or prevent an infection.

Claims

1. A shunt assembly, comprising:

a body structure defining one or more fluid-flow passageways configured to receive a biological fluid of a biological subject;

a sensor component for detecting an infectious agent proximate to the body structure;

a sterilizing energy emitter configured to emit a sterilizing energy stimulus to the biological fluid or to the infectious agent proximate to the body structure; and

means for reflecting at least a portion of the emitted energy stimulus within an interior of at least one of the one or more fluid-flow passageways.

2. The shunt assembly of claim 1, wherein the means for reflecting at least a portion of an emitted energy stimulus includes one or more energy emitters configured to emit the energy stimulus to an interior at least one of the one or more fluid-flow passageways, and an optical material that internally reflects at least a portion of an emitted energy stimulus present within an interior of at least one of the one or more fluid-flow passageways.

3. The shunt assembly of claim 1, wherein the means for reflecting at least a portion of an emitted energy stimulus includes an optical material that internally reflects at least a portion of an emitted energy stimulus within an interior of at least one of the one or more fluid-flow passageways, without substantially permitting the transmission of the emitted energy stimulus through an exterior of the body structure.

4. The shunt assembly of claim 1, wherein the means for reflecting at least a portion of an emitted energy stimulus includes an optical material that internally directs at least a portion of an emitted energy stimulus along a substantially lateral direction of at least one of the one or more fluid-flow passageways.

5. The shunt assembly of claim 1, wherein the means for reflecting at least a portion of an emitted energy stimulus includes a reflective surface capable of reflecting at least about 50 percent of an energy stimulus emitted by the one or more energy emitters that impinges on the reflective surface.

6. The shunt assembly of claim 1, wherein the means for reflecting at least a portion of an emitted energy stimulus includes a reflective surface that is reflective at a first wavelength and transmissive at a second wavelength different from the first wavelength.

7. The shunt assembly of claim 1, wherein the means for reflecting at least a portion of an emitted energy stimulus includes one or more internally reflective components configured to manage a delivery of light to a biological fluid received within the one or more fluid-flow passageways, and to manage a collection of reflected light from the biological fluid.

8. The shunt assembly of claim 1, wherein the means for reflecting at least a portion of an emitted energy stimulus includes an optical component that directs a first portion of an emitted energy stimulus along a substantially lateral direction in one or more regions of at least one of the one or more fluid-flow passageways and an optical component that directs a second portion of the emitted energy stimulus along a substantially longitudinal direction in one or more regions of at least one of the one or more fluid-flow passageways.

9. The shunt assembly of claim 1, wherein the means for reflecting at least a portion of an emitted energy stimulus includes a first optical component configured to direct at least a portion of an emitted energy stimulus along a substantially lateral direction in a first region of at least one of the one or more fluid-flow passageways and a second optical component configured to direct at least a portion of the emitted energy stimulus along a substantially lateral direction in a second region of the one or more fluid-flow passageways, the second region different from the first region.

10. The shunt assembly of claim 1, wherein the means for reflecting at least a portion of an emitted energy stimulus includes a first optical component that directs at least a portion of an emitted energy stimulus along a substantially longitudinal direction in a first region of at least one of the one or more fluid-flow passageways and a second optical component that directs at least a portion of the emitted energy stimulus along a substantially longitudinal direction in a second region of the one or more fluid-flow passageways, the second region different from the first region.

11. The shunt assembly of claim 1, wherein at least a portion of the body structure is configured to sufficiently internally reflect at least a portion of an emitted energy stimulus to generate an evanescent electromagnetic field across one or more regions of the body structure.

12. The shunt assembly of claim 1, wherein at least a portion of the body structure is configured to sufficiently internally reflect at least a portion of an emitted energy stimulus to cause an evanescent electromagnetic field to emanate from at least a portion of the body structure.

13. The shunt assembly of claim 1, wherein at least a portion of the body structure is configured to internally reflect at least a portion of an emitted energy stimulus within an interior of at least one of the one or more fluid-flow passageways.

14. The shunt assembly of claim 1, wherein at least a portion of the body structure is configured to totally internally reflect at least a portion of an emitted energy-stimulus propagated within an interior of at least one of the one or more fluid-flow passageways.

15. The shunt assembly of claim 1, wherein the infectious agent is in a biofilm.

16. The shunt assembly of claim 1, wherein the sensor component is configured to perform a real-time comparison of a measurand associated with a biological sample proximate one or more regions of at least one surface of the implantable device to stored reference data.

17. The shunt assembly of claim 1, wherein the sensor component is configured to detect at least one physiological characteristic associated with an infectious agent.

18. The shunt assembly of claim 1, further comprising a controller operably coupled to the sensor component and to the sterilizing energy emitter, the controller configured to automatically control at least one characteristic associated with sterilizing energy stimulus.

19. A shunt assembly, comprising:

a body structure defining one or more fluid-flow passageways configured to receive a biological fluid of a biological subject;

at least a portion of the body structure configured to reflecting at least a portion of an emitted energy stimulus within the interior of at least one of the one or more fluid-flow passageways;

a sensor component for detecting an infectious agent proximate to the body structure; and

one or more energy emitters configured to emit the energy stimulus to an interior at least one of the one or more fluid-flow passageways;

wherein at least a portion of a body structure defining the one or more fluid-flow passageways includes a reflective surface capable of reflecting at least about 50 percent of an energy stimulus emitted by the one or more energy emitters that impinges on the reflective surface.

20. The shunt assembly of claim 19, wherein the at least a portion of the body structure is configured to laterally internally reflect or longitudinally internally reflect electromagnetic radiation transmitted within the interior of at least one of the one or more fluid-flow passageways.

21. The shunt assembly of claim 19, further comprising:

one or more optical materials forming at least a portion of a body structure defining the one or more fluid-flow passageways, the one or more optical materials configured to limit an amount of the energy stimulus that can traverse within the one or more fluid-flow passageways and through an outer surface of the body structure.

22. The shunt assembly of claim 19, further comprising:

one or more optical materials on at least a portion of a body structure defining the one or more fluid-flow passageways to internally reflect at least a portion of an emitted energy stimulus from the one or more energy emitters into an interior of at least one of the one or more fluid-flow passageways.

23. The shunt assembly of claim 19, further comprising:

at least one outer internally reflective coating on a body structure defining the one or more fluid-flow passageways.

24. The shunt assembly of claim 19, further comprising:

at least one inner internally reflective coating on a body structure defining the one or more fluid-flow passageways.

25. The shunt assembly of claim 19, wherein at least one of the one or more fluid-flow passageways includes a surface configured to laterally internally reflect or longitudinally internally reflect electromagnetic radiation transmitted there through.

26. The shunt assembly of claim 19, wherein at least a portion of a body structure defining the one or more fluid-flow passageways includes a reflective surface that is reflective at a first wavelength and transmissive at a second wavelength different from the first wavelength.

27. The shunt assembly of claim 19, wherein at least one of the one or more fluid-flow passageways includes one or more internally reflective components configured to manage a delivery of light to a biological fluid received within the one or more fluid-flow passageways, and to manage a collection of reflected light from the biological fluid.

28. The shunt assembly of claim 19, wherein at least one of the one or more fluid-flow passageways includes at least one of an outer surface and an inner surface that is reflective to at least one of electromagnetic energy, ultrasonic energy, and thermal energy.

29. The shunt assembly of claim 19, wherein the infectious agent is in a biofilm.

30. The shunt assembly of claim 19, wherein the sensor component is configured to perform a real-time comparison of a measurand associated with a biological sample proximate one or more regions of at least one surface of the implantable device to stored reference data.

31. The shunt assembly of claim 19, wherein the sensor component is configured to detect at least one physiological characteristic associated with an infectious agent.

32. The shunt assembly of claim 19, further comprising a controller operably coupled to the sensor component and to at least one of the one or more energy emitters, the controller configured to automatically control at least one characteristic associated with sterilizing energy stimulus.