Bone-activity stimulation apparatus and method

1. A method of increasing bone mass throughout the body of a user, the method comprising:

obtaining a distributor comprising a blanket containing a plurality of coils, each coil configured to conduct electrical current and generate an electromagnetic field in response thereto;

obtaining a controller comprising a processor and a memory device, operably connected to one another, the memory device storing code executable by the processor;

selecting a source of electrical current;

connecting the source to the controller;

retiring, by a user, to a nightly bed of the user to sleep for a night;

positioning the blanket over the user in the nightly bed;

delivering, after the retiring and positioning, electrical current to the plurality of coils, and

controlling, by the controller in accordance with the code, the delivering of electrical current sequentially and exclusively to each coil of the plurality of coils to generate an electro magnetic field extending therethrough and into the user.

2. The method of claim 1 , wherein the plurality of coils are positioned adjacent one another in a non-overlapping arrangement.

3. The method of claim 2 , wherein each coil of the plurality of coils is positioned to be substantially coplanar.

4. The method of claim 3 , wherein the distributor further comprises a matrix comprising a flexible, breathable, material covering and mechanically connecting the plurality of coils.

5. The method of claim 4 , further comprising positioning the distributor coextensively over an upper surface of a bed sized to accommodate the user during sleep.

6. The method of claim 5 , further comprising triggering operation of the distributor in accordance with the presence of a user weighting the upper surface of the bed.

7. The method of claim 6 , further comprising distributing, intermittently, by the controller, the current among to the coils for a duration of from about a quarter hour to about four hours with, a duty cycle of actual current duration from about 1 percent to about 15 percent.

8. The method of claim 1 , wherein the controller further comprises a sensor operably connected to provide inputs to the processor indicating the presence of a user proximate the plurality of coils, the method further comprising:

sensing by the sensor a separation of a user from the distributor;

ceasing by the controller the delivering of current to the plurality of coils, in accordance with a first input from the sensor reflecting the separation; and

resumption of the delivering of current in response to a second input from the sensor reflecting a subsequent closure of the separation.

9. The method of claim 1 , wherein the controller further comprises a sensor associated with the distributor to detect the presence of a user, the method further comprising distributing by the controller the current to the coils only during a period of time during which the sensor detects the presence of a user.

10. A method of treatment to increase bone density in a mammalian subject, the method comprising:

selecting a distributor comprising a blanket containing at least one coil set in a matrix, the at least one coil configured to conduct electrical current and generate an electromagnetic field in response thereto;

selecting a controller comprising a processor and a memory device, operably connected to one another, the memory device storing code executable by the processor to control delivery of the electrical current to the at least one coil;

connecting the controller to a source of electrical current;

retiring, by a user, to a nightly bed of the user to sleep for a night;

positioning the blanket over the user in the nightly bed;

delivering, after the retiring and positioning, electrical current sequentially to each of the at least one coil to generate a magnetic field extending therethrough and substantially through the subject.

11. The method of claim 10 , wherein:

the at least one coil comprises a plurality of coils positioned adjacent one another in a non-overlapping arrangement; and

the coils of the plurality of coils are positioned to be substantially coplanar.

12. The method of claim 10 , wherein the matrix comprises a flexible, breathable, material covering and mechanically connecting the at least one coil.

13. The method of claim 10 , further comprising:

positioning the distributor coextensively over an upper surface of a bed sized to accommodate the subject during sleep;

sensing by a sensor the presence of the subject on the bed;

inputting to the controller an input from the sensor reflecting the presence; and

controlling by the controller operation of the distributor in accordance with the input.

14. The method of claim 10 , further comprising:

providing a sensor delivering inputs to the processor indicating the presence of a subject proximate the at least one coil;

ceasing, by the controller, the delivering of current to the at least one coil, in accordance with a first input from the sensor reflecting separation of the subject from the at least one coil; and

resuming, by the controller, the delivering of current in response to a second input from the sensor reflecting a subsequent closure of the separation.