Systems, apparatus, methods and procedures for the noninvasive treatment of tissue using microwave energy
The present invention is directed to systems, apparatus, methods and procedures for the noninvasive treatment of tissue using microwave energy. In one embodiment of the invention a medical device and associated apparatus and procedures are used to treat dermatological conditions using microwave energy.
1. A disposable medical apparatus for use with an applicator which radiates microwave energy, said disposable medical apparatus comprising:
a tissue chamber at a distal end of said disposable medical apparatus, a distal end of said tissue chamber being adapted to form a vacuum seal when positioned against skin;
an applicator chamber at a proximal end of said disposable member;
a flexible film forming a tissue bio-barrier, said tissue bio-barrier separating said tissue chamber and said applicator chamber, said tissue bio-barrier being a material which is substantially transparent to microwave energy, and substantially impermeable to air and biological fluids;
a filter forming an applicator bio-barrier separating air in said tissue chamber from air in said applicator chamber, said applicator bio-barrier being substantially permeable to air but substantially impermeable to biological fluids;
a vacuum circuit connecting said tissue chamber and said applicator chamber, wherein said applicator bio-barrier is positioned in said vacuum circuit; and
a vacuum seal at a proximal end of said applicator chamber, said vacuum seal being positioned to seal said applicator chamber when said applicator is positioned in said applicator chamber.
2. A disposable medical apparatus according to claim 1 , wherein said tissue bio-barrier does not perturb microwave fields passing through said tissue bio-barrier.
3. A disposable medical apparatus according to claim 1 , wherein said tissue bio-barrier is substantially lossless at a frequency of interest.
4. A disposable medical apparatus according to claim 3 , wherein said frequency of interest is between approximately 5 GHz and 6.5 GHz.
5. A disposable medical apparatus according to claim 1 , wherein said tissue bio-barrier has a Young's modulus of between approximately 0.1 GPa and 1.5 GPa.
6. A disposable medical apparatus according to claim 1 , wherein said vacuum circuit provides a substantially free flow of air from said applicator chamber to said tissue chamber.
7. A disposable medical apparatus according to claim 1 , wherein said tissue bio-barrier is less than approximately 0.001 inches thick.
8. A disposable medical apparatus according to claim 1 , wherein the tissue bio-barrier comprises a dielectric material.
9. A disposable medical apparatus according to claim 1 , wherein said vacuum circuit is adapted to split vacuum pressure between said tissue chamber and said actuator chamber.
10. A disposable medical apparatus according to claim 1 , wherein said vacuum seal comprises a gasket around said applicator chamber.
11. A disposable medical apparatus according to claim 1 wherein said filter comprises a hydrophobic membrane filter.
12. A disposable medical apparatus according to claim 1 wherein said tissue chamber further comprises a flexible member positioned at a distal end thereof.