1. An electronic device comprising:
a main body including a printed circuit board,
a cover body pivotally assembled to the main body, the cover body being selectively located in a closed position, at which the cover body covers the main body, and an open position at which the cover rotates away the main body, and
an active member automatically powering on the electronic device when the cover body is rotated to the open position, the active member comprising:
a first driving portion mounted to the cover body;
a second driving portion mounted to the main body;
a power switch mounted on the printed circuit board;
wherein, when the cover body locates in the closed position, an attraction force is generated by the cooperation of the first and second driving portion, and the power switch is activated to power off the electronic device, when the cover body rotates from the closed position to the open position, the attraction force is reduced to activate the power switch to power on the electronic device.
2. The electronic device of claim 1, wherein the first driving portion and the second driving portion are magnets.
3. The electronic device of claim 1, wherein the active member further comprises an elastic member between the first and second driving portions, the elastic member is compressed by the attraction force to store potential energy when the second driving portion is attracted by the first driving portion and activates the power switch by the expansion of the elastic member due to the reduced attraction force when the cover body rotates from the closed position to the open position.
4. The electronic device of claim 2, wherein the active member further comprises a conductive portion, the conductive portion is driven by the elastic member to touch the power switch and influenced by the attraction force to move away from the power switch.
5. The electronic device of claim 3, wherein the main body comprising:
a first housing;
a second housing cooperatively combined with the first housing to define a receiving space; and
the second driving portion, the power switch, the printed circuit board and the elastic member accommodated in the receiving space.
6. The electronic device of claim 5, wherein the main body further comprises a positioning post, the positioning post protrudes downwardly from an inner surface of a top of the second housing, and the elastic member is sleeved around the positioning post.
7. The electronic device of claim 6, wherein the power switch includes a first contact and a second contact, the first contact and the second contact protrudes from the printed circuit board.
8. The electronic device of claim 1, wherein one of the first driving portion and the second driving portion is magnet and the other of the first driving portion and the second driving portion is iron or steel.
9. An electronic device comprising:
a main body including a printed circuit board;
a cover body mounted on the main body, the cover body is selectively located in a closed position and an open position;
an active member for locking the cover body on the main body when the cover body is in the closed position and unlocking the cover body from the main body and automatically powering on the electronic device when the cover body moves from the closed position to the open position, the active member comprising a first driving portion mounted in the cover body, a second driving portion mounted in the main body and being capable of cooperating with the first driving portion; a power switch electrical coupled to the printed circuit board;
wherein, when the cover body is in the closed position, the first driving portion cooperates with the second driving portion to generate a attraction force which locks the cover body on the main body, when the cover body goes from the closed position to the open position, the attraction force generated by the cooperation between the first driving portion and second driving portion is reduced so as to unlock the cover body from the main body and automatically activate the power switch.
10. The electronic device of claim 9, wherein the first driving portion and the second driving portion are magnets.
11. The electronic device of claim 9, wherein the active member further comprises an elastic member between the first and second driving portions, the elastic member is compressed by the attraction force to store potential energy when the second driving portion is attracted by the first driving portion and activates the power switch by the expansion of the elastic member due to the reduced attraction force when the cover body rotates from the closed position to the open position.
12. The electronic device of claim 10, wherein the active member further comprises a conductive portion, the conductive portion is driven by the elastic member to touch the power switch and influenced by the attraction force to move away from the power switch.
13. The electronic device of claim 1, wherein the main body comprising:
a first housing;
a second housing cooperatively combined with the first housing to define a receiving space; and
the second driving portion, the power switch, the printed circuit board and the elastic member accommodated in the receiving space.
14. The electronic device of claim 13, wherein the main body further comprises a positioning post, the positioning post protrudes downwardly from an inner surface of a top of the second housing, and the elastic member is sleeved around the positioning post.
15. The electronic device of claim 14, wherein the main body further comprises a conductive portion, the conductive portion is disposed between the second driving portion and the power switch; the conductive portion is capable of being driven to move together with the second driving portion, by the potential energy, for selectively engaging with or disengaging from the power switch to control the power switch opening or closing.
16. The electronic device of claim 15, wherein the power switch includes a first contact and a second contact, the first contact and the second contact protrudes from the printed circuit board.
17. The electronic device of claim 9, wherein one of the first driving portion and the second driving portion is magnet and the other of the first driving portion and the second driving portion is iron or steel.
18. An electronic device comprising:
a main body including a printed circuit board,
a cover body pivotally assembled to the main body, the cover body being selectively located in a closed position, at which the cover body covers the main body, and an open position at which the cover rotates away the main body, and
an active member automatically powering on the electronic device when the cover body is rotated to the open position, the active member comprising:
a first driving portion mounted to the cover body;
a second driving portion, a conductive portion, a first contact, and a second contact disposed on the printed circuit board are accommodated in the main body;
the conductive portion being disposed between the second driving portion, and the first contact and the second contact;
wherein, when the cover body locates in the closed position, an attraction force is generated by the cooperation of the first and second driving portion, the second driving portion is driven by attraction force to bring the conductive portion to move apart from the first contact and second contact for power off the electronic device, when the cover body rotates from the closed position to the open position, the attraction force is reduced to activate the conductive portion to contact the first contact and the second contact for power on the electronic device.
19. The electronic device of claim 18, wherein the first driving portion and the second driving portion are magnets.
20. The electronic device of claim 19, wherein the active member further comprises an elastic member between the first and second driving portions, the elastic member is compressed by the attraction force to store potential energy when the second driving portion is attracted by the first driving portion and activates the power switch by the expansion of the elastic member due to the reduced attraction force when the cover body rotates from the closed position to the open position.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
We claim:
1. A therapeutic source comprising a radioactive composite consisting essentially of (a) a polymeric matrix and (b) a radioactive powder consisting essentially of very fine radioactive particles that are randomly and essentially uniformly dispersed within said polymeric matrix;
wherein the radioactive composite is in the shape of one or more right circular cylindrical rods, solid in cross section, having a cylindrical wall and a pair of ends on opposite sides thereof, and wherein the therapeutic source further comprises a non-radioactive sleeve which surrounds the cylindrical wall.
2. A therapeutic source of claim 1, further comprising a pair of caps covering said ends of the radioactive composite.
3. A therapeutic source of claim 2, wherein the nonradioactive sleeve and pair of caps are of sufficient thickness to absorb a portion of the radiation emitted or to modify the energy spectrum of the emitted radiation.
4. A therapeutic source of claim 3, wherein the radioactive particles emit beta particles and wherein the nonradioactive sleeve and pair of caps reduce the average energy of emitted beta particles.
5. A therapeutic source of claim 1, further comprising a radiographically detectable element for locating the source within the body of the patient.
6. A therapeutic source of claim 5, wherein the radiographically detectable element comprises polymeric material containing a sufficient amount of radiopaque material so as to allow location of the therapeutic source and detection of its orientation by conventional X-ray imaging.
7. A therapeutic source of claim 6, wherein the radiopaque material is barium sulfate.
8. A therapeutic source of claim 1, further comprising an axial wire having a tail portion that extends beyond an end of the radioactive composite, whereby said tail portion is adapted to be secured to a catheter.
9. A method of using a therapeutic source of claim 8, which comprises using a catheter secured to the source to deliver a dose of radiation to an arterial wall which is intended to reduce the likelihood of restenosis.
10. A therapeutic source comprising a radioactive composite consisting essentially of (a) a polymeric matrix and (b) a radioactive powder consisting essentially of very fine radioactive particles that are randomly and essentially uniformly dispersed within said polymeric matrix, the radioactive composite having a shape selected from the group consisting of a structure that is hollow in cross section; a suture; a mesh; a film; a sheet; and a multiplicity of microscopic essentially monodisperse spheroidal sources.
11. A therapeutic source of claim 10, the radioactive composite having the shape of a multiplicity of microscopic essentially monodisperse spheroidal sources having a mean diameter of from 10 to 100 microns.
12. A therapeutic source of claim 10, wherein the radioactive powder comprises palladium-103.
13. A therapeutic source of claim 10, wherein the radioactive powder comprises iodine-125.
14. A therapeutic source comprising a radioactive composite consisting essentially of (a) a polymeric matrix and (b) a radioactive powder consisting essentially of microscopic radioactive particles at least 0.002 micron in average dimension randomly and essentially uniformly dispersed within said polymeric matrix;
the radioactive composite being encapsulated within a metallic capsule.
15. A therapeutic source of claim 14, wherein the metallic capsule comprises titanium.
16. A therapeutic source of claim 14, further comprising a radiographically detectable element for locating the source within the body of the patient.
17. A method of making a therapeutic source comprising a radioactive composite consisting essentially of (a) a polymeric matrix and (b) a radioactive powder consisting essentially of very fine radioactive particles that are randomly and essentially uniformly dispersed within said polymeric matrix, comprising
molding the radioactive composite into a desired shape.
18. A method of claim 17, wherein the radioactive composite is molded over a pin to produce a hollow shape.
19. A method of claim 17, wherein the radioactive composite is molded around a radiographically detectable element.
20. A method of claim 17, wherein the radioactive composite is molded inside a capsule.
21. A method of claim 17, wherein the radioactive composite is molded into a shape appropriate for use as an intracavitary applicator therapeutic source, whereby the entire applicator body is radioactive so that the area treated receives a uniform dose of radiation.
22. A therapeutic source made by the method of claim 17.