Systems, devices, and methods including catheters having self-cleaning surfaces

• US 20110152790A1
• Filed: 11/10/2010
• Published: 06/23/2011
• Est. Priority Date: 08/17/2007
• Status: Active Grant

• Current Assignee: Gearbox LLC (Intellectual Ventures LLC)
• Original Assignee: Searete LLC (Intellectual Ventures LLC)
• Inventors: Wood, Victoria Y. H., Ishikawa, Muriel Y., Smith, Michael A., Myhrvold, Nathan P., Tegreene, Clarence T., Wood, Lowell L. JR., Rivet, Dennis J., Hyde, Roderick A., Kare, Jordin T., Sweeney, Elizabeth A., Leuthardt, Eric C., Dacey, Ralph G. JR.
• Granted Patent: US 8,706,211 B2
• Time in Patent Office: Days
• US Class Current: 604/265
• CPC Class Codes: A61F 2/30 Joints
• CPC Class Codes: A61F 2/32 for the hip
• CPC Class Codes: A61F 2/48 Operating or control means, e.g. from outside the body, control of sphincters
• CPC Class Codes: A61F 2/481 Acoustic or audible means
• CPC Class Codes: A61F 2/482 Electrical means
• CPC Class Codes: A61F 2002/30087 piezoelectric
• CPC Class Codes: A61F 2002/30668 Means for transferring electromagnetic energy to implants
• CPC Class Codes: A61F 2002/3067 for data transfer
• CPC Class Codes: A61F 2002/30677 Means for introducing or releasing pharmaceutical products, e.g. antibiotics, into the body
• CPC Class Codes: A61F 2250/0001 Means for transferring electromagnetic energy to implants
• CPC Class Codes: A61F 2250/0002 for data transfer
• CPC Class Codes: A61F 2310/0097 Coating or prosthesis-covering structure made of pharmaceutical products, e.g. antibiotics
• CPC Class Codes: A61L 2202/14 Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs
• CPC Class Codes: A61L 2202/24 Medical instruments, e.g. endoscopes, catheters, sharps
• CPC Class Codes: A61M 5/001 Apparatus specially adapted for cleaning or sterilising syringes or needles
• CPC Class Codes: A61N 1/205 for promoting a biological process
• 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

Abstract

Systems, devices, methods, and compositions are described for providing an actively-controllable disinfecting implantable device configured to, for example, treat or prevent an infection in a biological subject.

Claims

1. A medical device, comprising:

a catheter device including a body structure defining one or more catheters, the body structure having an outer surface and an inner surface defining one or more fluid-flow passageways, at least a portion of the body structure including one or more self-cleaning surface regions;

one or more selectively actuatable energy waveguides configured to direct an emitted energy stimulus to one or more regions proximate at least one of the outer surface or the inner surface of the body structure; and

one or more energy emitters configured to emit an energy stimulus, the one or more energy emitters operatively coupled to the one or more selectively actuatable energy waveguides.

2. The medical device of claim 1, wherein the one or more self-cleaning surface regions include a self-cleaning coating composition.

3. The medical device of claim 1, wherein the one or more self-cleaning surface regions include an energy-activatable self-cleaning material.

4. The medical device of claim 1, wherein the one or more self-cleaning surface regions include a chemically activatable self-cleaning material.

5. The medical device of claim 1, wherein the one or more self-cleaning surface regions include one or more of titanium dioxide, superhydrophobic materials, or carbon nanotubes with nanoscopic paraffin coatings.

6. The medical device of claim 1, wherein the one or more self-cleaning surface regions include one or more of non-fouling zwitterionic polymers, zwitterionic surface forming materials, zwitterionic polymers, poly(carboxybetaine methacrylate) (pCBMA), poly(carboxybetaine acrylic amide) (pCBAA), poly(oligo(ethylene glycol) methyl ether methacrylate) (pOEGMA), poly(N,N-dimethyl-N-(ethoxycarbonylmethyl)-N-[2′

-(methacryloyloxy)ethyl]-ammonium bromide), cationic pC8NMA, switchable pCBMA-1 C2, or switchable pCBMA-2.

7. The medical device of claim 1, wherein the one or more self-cleaning surface regions include one or more antimicrobial agents.

8. The medical device of claim 1, wherein the one or more self-cleaning surface regions are configured to generate a reactive oxygen specie or a reactive nitrogen specie when exposed to an energy stimulus.

9. The medical device of claim 1, wherein the one or more self-cleaning surface regions include a self-cleaning agent configured to hydrolyze when exposed to an energy stimulus.

10. The medical device of claim 1, wherein the one or more self-cleaning surface regions include a self-cleaning coating configured to degrade when exposed to an energy stimulus.

11. The medical device of claim 1, wherein the one or more self-cleaning surface regions include a blood-soluble material configured to degrade when exposed to blood in vivo.

12. The medical device of claim 1, wherein the one or more self-cleaning surface regions include one or more reflective materials and one or more self-cleaning materials.

13. The medical device of claim 1, wherein the one or more self-cleaning surface regions include one or more reflective coatings and one or more self-cleaning coatings.

14. The medical device of claim 1, wherein the one or more self-cleaning surface regions include at least one of an antimicrobial coating and a non-fouling coating.

15. The medical device of claim 1, wherein the one or more self-cleaning surface regions include an antimicrobial and a non-fouling coating.

16. The medical device of claim 1, wherein the one or more self-cleaning surface regions include a surface region that is energetically actuatable between an antimicrobial state and a non-fouling state.

17. The medical device of claim 1, wherein at least one of the one or more energy emitters is configured to deliver at least one of an electromagnetic sterilizing energy stimulus, an electrical sterilizing energy stimulus, an acoustic sterilizing energy stimulus, or a thermal sterilizing energy stimulus.

18. The medical device of claim 1, wherein at least one of the one or more energy emitters is operable to emit an sterilizing electromagnetic energy stimulus having one or more peak emission wavelengths in the infrared, visible, or ultraviolet spectrum, or combinations thereof.

19. The medical device of claim 1, wherein at least one of the one or more energy emitters is configured to deliver at least one of an electromagnetic sterilizing energy stimulus, an electrical sterilizing energy stimulus, an acoustic sterilizing energy stimulus, or a thermal sterilizing energy stimulus.

20. The medical device of claim 1, wherein at least one of the one or more energy emitters is configured to deliver at least one of an electrical sterilizing energy stimulus, an electromagnetic sterilizing energy stimulus, an acoustic sterilizing energy stimulus, or a thermal sterilizing energy stimulus at a dose sufficient to attenuate an activity of an infectious agent proximate the outer surface or the inner surface of the body structure.

21. The medical device of claim 1, wherein at least one of the one or more energy emitters is configured to deliver at least one of an electrical sterilizing energy stimulus, an electromagnetic sterilizing energy stimulus, an acoustic sterilizing energy stimulus, or a thermal sterilizing energy stimulus at a dose sufficient to cause the death of an infectious agent proximate the outer surface or the inner surface of the body structure.

22. The medical device of claim 1, wherein at least one of the one or more energy emitters is configured to deliver a sufficient amount of at least one of an electrical sterilizing energy stimulus, an electromagnetic sterilizing energy stimulus, an acoustic sterilizing energy stimulus, or a thermal sterilizing energy stimulus, in vivo, to induce apoptosis without substantially inducing necrosis of an infectious agent proximate the outer surface or the inner surface of the body structure.

23. The medical device of claim 1, wherein at least one of the one or more energy emitters is an ultraviolet energy emitter.

24. The medical device of claim 1, wherein at least one of the one or more energy emitters is an ultraviolet B energy emitter.

25. The medical device of claim 1, wherein at least one of the one or more energy emitters is an ultraviolet C energy emitter.

26. The medical device of claim 1, wherein at least one of the one or more energy emitters is an ultraviolet C light emitting diode.

27. The medical device of claim 1, wherein at least one of the one or more energy emitters is a germicidal light emitter.

28. The medical device of claim 1, wherein at least one of the one or more energy emitters comprises an electromagnetic energy peak emission wavelength ranging from about 100 nanometers to about 400 nanometers.

29. The medical device of claim 1, wherein at least one of the one or more energy emitters comprises an electromagnetic energy peak emission wavelength ranging from about 100 nanometers to about 280 nanometers.

30. The medical device of claim 1, wherein at least one of the one or more energy emitters comprises an electromagnetic energy peak emission wavelength ranging from about 200 nanometers to about 290 nanometers.

31. The medical device of claim 1, wherein at least one of the one or more energy emitters comprises an electromagnetic energy peak emission wavelength ranging from about 280 nanometers to about 320 nanometers.

32. The medical device of claim 1, wherein the one or more selectively actuatable energy waveguides are configured to provide a spatially patterned energy stimulus.

33. The medical device of claim 1, wherein the one or more selectively actuatable energy waveguides are configured to direct electromagnetic radiation of a character and for a duration sufficient to induce apoptosis without substantially inducing necrosis of a portion of cells proximate the outer surface or the inner surface of the body structure.

34. The medical device of claim 1, wherein the one or more selectively actuatable energy waveguides are configured to direct a sufficient amount of an ultraviolet radiation to at least one of the outer surface or the inner surface of the body structure to induce program cell death.

35. The medical device of claim 1, wherein the one or more selectively actuatable energy waveguides are configured to direct, to at least one of the outer surface or the inner surface of the body structure, an effective dose of optical energy at which a cell preferentially undergoes apoptosis compared to necrosis.

36. The medical device of claim 1, wherein the one or more selectively actuatable energy waveguides are configured to direct a sufficient amount of an optical energy to initiate ultraviolet energy induced apoptosis of a portion of cells proximate the outer surface or the inner surface of the body structure.

37. The medical device of claim 1, wherein an average integrated flux of the one or more selectively actuatable energy waveguides is less than about 80 milli-joules per square centimeter.

38. The medical device of claim 1, wherein an average integrated flux of the one or more selectively actuatable energy waveguides is less than about 35 milli-joules per square centimeter.

39. The medical device of claim 1, wherein an average integrated flux of the one or more selectively actuatable energy waveguides is less than about 15 milli-joules per square centimeter.

40. The medical device of claim 1, wherein an average integrated flux of the one or more selectively actuatable energy waveguides ranges from about 15 milli-joules per square centimeter to about less than about 80 milli joules per square centimeter.