1: A rubber composition, which comprises 100 parts by weight of an ethylene-alkyl acrylate copolymer rubber, 5-40 part by weight of EPDM, 1-40 parts by weight of an \u03b1-olefin oligomer, 0.5-4 parts by weight of an organic peroxide cross-linking agent, 0.5-4 parts by weight of an amine-based vulcanizing agent, and 300-1,000 part by weight of magnetic powder.
2: A rubber composition according to claim 1, wherein the ethylene-alkyl acrylate copolymer rubber is an ethylene-alkyl acrylate copolymer rubber having amine-vulcanizable groups.
3: A rubber composition according to claim 2, wherein the ethylene-alkyl acrylate copolymer rubber having amine-vulcanizable groups is an ethylene-alkyl acrylate copolymer rubber copolyerized epoxy group or hydroxyl group containing monomers.
4: A rubber composition according to claim 1, wherein the \u03b1-olefin oligomer is a polymer of \u03b1-olefin having 6-14 carbon atoms and an average molecular weight MN of 400-2,000.
5: A rubber composition according to claim 1, wherein o.1-10 parts by weight of a co-cross-linking agent of polyfunctional unsaturated compound is used together with the organic peroxide cross-linking agent.
6: A rubber composition according to claim 1, wherein the magnetic powder is ferrite magnetic powder or rear earth magnetic powder.
7: A rubber composition according to claim 6, wherein the ferrite magnetic powder is strontium ferrite powder of barium ferrite powder.
8: A rubber composition according to claim 1, for used as a molding material for a rubber-bonded sensor magnetic.
9: A rubber-bonded sensor magnetic vulcanization-molded from a rubber composition according to claim 8.
10: A rubber-bonded sensor magnetic according to claim 8, for use as a magnetic encoder.
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 system for reducing or preventing reperfusion injury to a patient, the system comprising:
a catheter including an elongate shaft having a proximal end, a distal end and a length therebetween, the elongate shaft including an inflation lumen and a guidewire lumen,
an expandable member disposed at or near the distal end of the elongate shaft, and
a handle disposed at or near the proximal end of the elongate shaft, the handle including at least part of a fluid circuit adapted to modulate inflation fluid flow in one direction to inflate and deflate the expandable member.
2. The system of claim 1, wherein the handle is non-removably attached to the elongate shaft.
3. The system of claim 2, wherein the system is disposable.
4. The system of claim 1, wherein the handle includes an actuator to effect inflation or deflation of the expandable member.
5. The system of claim 4, wherein the actuator has a first position to actuate inflation fluid flow to the expandable member.
6. The system of claim 4, wherein the actuator has a second position to actuates inflation fluid flow to the expandable member.
7. The system of claim 5, wherein the first position includes a momentary direction.
8. The system of claim 6, wherein the second position includes a detentable direction.
9. The system of claim 1, wherein the system contains no more than one actuator to inflate and deflate the expandable member.
10. The system of claim 9, wherein the actuator is a switch, a button, or a lever.
11. The system of claim 10, wherein the switch, button, or lever is configured to prevent overinflation of the expandable member.
12. The system of claim 1, wherein the handle includes a safety member to prevent inflation fluid flow.
13. The system of claim 1, wherein the fluid circuit provides a closed loop circuit.
14. The system of claim 1, wherein the fluid circuit includes a first reservoir and a second reservoir in fluid communication with a two-way splitter.
15. The system of claim 14, wherein the first reservoir contains inflation fluid.
16. The system of claim 15, wherein the fluid circuit includes a piercing member to pierce the first reservoir.
17. The system of claim 16, wherein the actuator actuates the piercing member to pierce the first reservoir to release the inflation fluid.
18. The system of claim 17, wherein the piercing member includes lancing device.
19. The system of claim 17, wherein the piercing member controllably taps the first reservoir.
20. The system of claim 17, wherein the fluid circuit includes a regulator to control pressure from the inflation fluid to the actuator.
21. The system of claim 20, wherein the regulator is a valve.
22. The system of claim 1, wherein the actuator controls inflation fluid flow from the handle to an inflation lumen.
23. The system of claim 22, wherein the actuator controls inflation flow through the inflation lumen to the expandable member.
24. The system of claim 22, wherein the fluid circuit includes a splitter adapted to send the inflation fluid to the inflation lumen of the catheter.
25. The system of claim 24, wherein the system includes a second splitter having a pulse valve, wherein the pulse valve effectuates a time controlled flow of inflation fluid to the inflation lumen.
26. The system of claim 25, wherein the fluid circuit includes a check valve to direct flow of inflation fluid from the pulse valve to the inflation lumen.
27. The system of claim 26, wherein the fluid circuit further includes a connector valve to connect a deflation lumen tube from the expandable member to the check valve.
28. The system of claim 27, wherein the fluid circuit includes an indicator to provide information about inflation or deflation of the expandable member.
29. The system of claim 28, wherein the indicator is an air indicator.
30. The system of claim 29, wherein the air indicator is disposed at the deflation lumen.
31. The system of claim 30, wherein the air indicator indicates an existence of inflation fluid pressure in the deflation lumen.
32. The system of claim 31, wherein the existence of inflation fluid pressure in the deflation lumen signifies inflation of the expandable member.
33. The system of claim 1, wherein the expandable member is a balloon, and further wherein the balloon is sequentially inflatable and deflatable.
34. A catheter comprising:
a fluid circuit including an inflation tube, a deflation tube, and a plurality of valves to modulate flow of inflation fluid in one direction to and from a balloon disposed on the catheter, and
a pressure marker configured to indicate whether the balloon is in an inflated or deflated state.
35. The catheter of claim 34, wherein the pressure marker is associated with the deflation lumen.
36. The catheter of claim 35, wherein the pressure marker is associated with the deflation lumen at a proximal section of the catheter.
37. The catheter of claim 35, wherein the pressure marker is an air indicator.
38. The catheter of claim 34, wherein the fluid circuit further includes a control system.
39. The catheter of claim 38, wherein the control system is disposed in a handle attached to the proximal end of the catheter.
40. The catheter of claim 39, wherein the control system includes a reservoir to house inflation fluid, an actuator, and a plurality of valves to control flow of inflation fluid to and from the balloon.
41. The catheter of claim 34, wherein the fluid circuit is configured to inhibit overinflation of the balloon.
42. The catheter of claim 41, wherein the fluid circuit includes a pulse valve to inhibit overinflation of the balloon.
43. The catheter of claim 34, wherein the inflation fluid is carbon dioxide.