1. A method for treating tissue, the method comprising:
selecting a conductor having a ferromagnetic coating disposed on a portion thereof, the conductor extending through the entire ferromagnetic coating;
disposing the ferromagnetic coating into contact with the tissue; and
delivering an oscillating electrical signal to the conductor so as to heat the ferromagnetic coating; and
treating the tissue; and
wherein delivering an oscillating electrical signal to the conductor comprises variably controlling power of the oscillating electrical signal to heat the ferromagnetic coating to achieve a temperature above about 40 degrees Centigrade and below a Curie temperature of the ferromagnetic coating.
2. The method according to claim 1, wherein the ferromagnetic coating is plated on the conductor.
3. The method according to claim 1, wherein the selected conductor is about 0.375 millimeters in diameter and wherein the ferromagnetic coating has a thickness of about 0.05 millimeters or smaller.
4. The method according to claim 1, wherein the conductor has a low thermal mass to provide for rapid temperature regulation.
5. The method according to claim 1, wherein the selecting step comprises selecting the conductor to have a first portion, a second portion and a middle portion disposed between the first portion and the second portion, the middle portion being formed in a shape selected from the group of loop, solid loop, square, pointed, hook and angled, and wherein the ferromagnetic coating is disposed only on part of the middle portion.
6. A method for treating tissue, the method comprising:
selecting a conductor having a ferromagnetic coating disposed on a portion thereof, the conductor extending through the entire ferromagnetic coating;
disposing the ferromagnetic coating into contact with the tissue; and
delivering an oscillating electrical signal to the conductor so as to heat the ferromagnetic coating; and
treating the tissue; and
wherein delivering an oscillating electrical signal to the conductor comprises variably controlling power of the oscillating electrical signal to heat and maintain the ferromagnetic coating at a temperature between about 37 and 600 degrees Centigrade.
7. The method according to claim 1, wherein treating the tissue includes incising the tissue by contacting the tissue with the heated ferromagnetic coating.
8. The method according to claim 1, wherein treating the tissue includes causing hemostasis in the tissue by contacting the tissue with the heated ferromagnetic coating.
9. The method according to claim 1, wherein treating the tissue includes ablating the tissue by contacting the tissue with the heated ferromagnetic coating.
10. The method according to claim 1, wherein treating the tissue includes vascular endothelial welding by contacting the tissue with the heated ferromagnetic coating.
11. A method for treating tissue, the method comprising:
selecting a conductor having a ferromagnetic coating disposed on a portion thereof, the conductor extending through the entire ferromagnetic coating;
disposing the ferromagnetic coating into contact with the tissue; and
delivering an oscillating electrical signal to the conductor so as to heat the ferromagnetic coating; and
treating the tissue; and
wherein delivering an oscillating electrical signal to the conductor comprises variably controlling power of the oscillating electrical signal to heat and maintain the ferromagnetic coating at a temperature between about 80-200 degrees Centigrade to promote tissue searing and sealing.
12. A method for treating tissue, the method comprising:
selecting a conductor having a ferromagnetic coating disposed on a portion thereof, the conductor extending through the entire ferromagnetic coating;
disposing the ferromagnetic coating into contact with the tissue; and
delivering an oscillating electrical signal to the conductor so as to heat the ferromagnetic coating; and
treating the tissue; and
wherein delivering an oscillating electrical signal to the conductor comprises variably controlling power of the oscillating electrical signal to heat and maintain the ferromagnetic coating at a temperature between about 200-400 degrees Centigrade to create tissue incisions.
13. A method for treating tissue, the method comprising:
selecting a conductor having a ferromagnetic coating disposed on a portion thereof, the conductor extending through the entire ferromagnetic coating;
disposing the ferromagnetic coating into contact with the tissue; and
delivering an oscillating electrical signal to the conductor so as to heat the ferromagnetic coating; and
treating the tissue; and
wherein delivering an oscillating electrical signal to the conductor comprises variably controlling power of the oscillating electrical signal to heat and maintain the ferromagnetic coating at a temperature between about 400-500 degrees Centigrade to cause tissue ablation and vaporization.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A water-processing filter comprising (A) a hollow cylindrical filter which comprises (a1) a granular activated carbon having a median particle size of 30 to 80 \u03bcm and (a2) a fibrillated fibrous binder, wherein the cylindrical filter (A) has an upstream outer surface having an arithmetical mean deviation of a waviness profile of not more than 30 \u03bcm and an arithmetical mean deviation of a primary profile of 35 to 45 \u03bcm.
2. A water-processing filter according to claim 1, which further comprises (B) a hollow cylindrical filter disposed in a hollow space of the cylindrical filter (A), wherein the cylindrical filter (B) comprises (b1) a granular activated carbon having a median particle size of 30 to 80 \u03bcm and (b2) a granular binder.
3. A water-processing filter according to claim 2, wherein the density ratio of the cylindrical filter (A) relative to the cylindrical filter (B) is the cylindrical filter (A)the cylindrical filter (B)=0.71 to 1.51.
4. A water-processing filter according to claim 2, wherein the volume ratio of the cylindrical filter (A) relative to the cylindrical filter (B) is the cylindrical filter (A)the cylindrical filter (B)=31 to 201.
5. A water-processing filter according to claim 1, wherein the cylindrical filter (A) has a downstream inner surface having an arithmetical mean deviation of a primary profile of 0.5 to 1.5 times as large as the arithmetical mean deviation of the primary profile of the outer surface.
6. A water-processing filter according to claim 1, wherein the outer surface of the cylindrical filter (A) is ground without compression.
7. A method for producing a water-processing filter recited in claim 1, comprising the steps of:
preparing a slurry by dispersing a mixture of (a1) a granular activated carbon and (a2) a fibrous binder in water,
filtering the slurry by suction to give (A1) a premolded product,
drying the premolded product (A1) to give (A2) a dried molded product, and
grinding an outer surface of the molded product (A2).
8. A method according to claim 7, wherein, in the grinding step, the outer surface of the molded product (A2) is ground at a grinding depth of 5 to 200 times as large as a median particle size of the granular activated carbon (a1).
9. A method according to claim 7, wherein the outer surface of the molded product (A2) is ground while the molded product (A2) is rotated.
10. A method according to claim 7, further comprising the steps of:
thermoforming a mixture of (b1) a granular activated carbon and (b2) a granular binder to give (B) a cylindrical filter, and
inserting the cylindrical filter (B) into a hollow space of the cylindrical filter (A).