The invention provides a treatment for congestive heart failure (CHF) in a patient. At least one pressure applicator is arranged externally around a body segment of the patient. Negative pressure, relative to atmospheric pressure, is applied to the body segment of the patient during cardiac systole
The invention provides a treatment for congestive heart failure (CHF) in a patient. At least one pressure applicator is arranged externally around a body segment of the patient. Negative pressure, relative to atmospheric pressure, is applied to the body segment of the patient during cardiac systole using the pressure applicator, thereby reducing ventricular afterload in the patient. The negative pressure to the body segment of the patient is removed during cardiac diastole.
대표청구항▼
1. A method of treating congestive heart failure (CHF) in a patient, said method comprising: arranging at least one pressure applicator externally around a body segment of the patient;applying negative pressure, relative to atmospheric pressure, to the body segment of the patient during cardiac syst
1. A method of treating congestive heart failure (CHF) in a patient, said method comprising: arranging at least one pressure applicator externally around a body segment of the patient;applying negative pressure, relative to atmospheric pressure, to the body segment of the patient during cardiac systole using the at least one pressure applicator, thereby reducing ventricular afterload in the patient; andremoving the negative pressure to the body segment of the patient during cardiac diastole,wherein at least one said pressure applicator includes at least one housing adapted to surround the body segment of the patient, said at least one housing having a shell that includes an interior wall, an exterior wall, and a plurality of spacer elements configured to maintain said exterior wall in spaced relation with said interior wall, said plurality of spacer elements providing a plurality of air transfer openings that permit air flow between said exterior wall and said interior wall; andwherein said arranging step includes arranging said at least one housing around the body segment of the patient. 2. A method according to claim 1, wherein the negative pressure is substantially in the range of −30 to −50 mm Hg. 3. A method according to claim 1, wherein said arranging step includes arranging the at least one pressure applicator externally around a calf, a thigh or a buttock muscle of the patient. 4. A method according to claim 1, wherein said arranging step includes arranging a first pressure applicator externally around one of a calf, a thigh or a buttock muscle of the patient and arranging a second pressure applicator externally around another of the calf, the thigh or the buttock muscle of the patient, the second pressure applicator being arranged further from the heart of the patient than the first pressure applicator, and said applying step includes: applying the negative pressure during the cardiac systole using the first pressure applicator, andthen applying the negative pressure during the cardiac systole using the second pressure applicator while maintaining the negative pressure using the first pressure applicator. 5. A method according to claim 4, wherein said step of removing the negative pressure includes: removing, during the cardiac diastole, the negative pressure applied by the second pressure applicator while maintaining the negative pressure using the first pressure applicator, andthen removing, during the cardiac diastole, the negative pressure applied by the first pressure applicator. 6. A method according to claim 4, wherein said step of removing the negative pressure includes: applying, during the cardiac diastole, a positive pressure using the second pressure applicator while maintaining the negative pressure using the first pressure applicator, andthen applying, during the cardiac diastole, the positive pressure using the first pressure applicator while maintaining the positive pressure using the second pressure applicator. 7. A method according to claim 1, wherein said arranging step includes arranging a first pressure applicator externally around one thigh of the patient, arranging a second pressure applicator externally around another thigh of the patient, arranging a third pressure applicator externally around one calf of the patient, and arranging a fourth pressure applicator externally around another calf of the patient, and said applying step includes: applying a negative pressure to the thighs during the cardiac systole using the first and second pressure applicators, andthen applying a negative pressure to the calves during the cardiac systole using the third and fourth pressure applicators while maintaining the negative pressure to the thighs using the first and second pressure applicators. 8. A method according to claim 7, wherein said step of removing the negative pressure includes: removing, during the cardiac diastole, the negative pressure applied to the calves by the third and fourth pressure applicators while maintaining the negative pressure to the thighs using the first and second pressure applicators, andthen removing, during the cardiac diastole, the negative pressure applied to the thighs by the first and second pressure applicators. 9. A method according to claim 7, wherein said step of removing the negative pressure includes: applying, during the cardiac diastole, a positive pressure to the calves using the third and fourth pressure applicators while maintaining the negative pressure to the thighs using the first pressure applicator, andthen applying, during the cardiac diastole, a positive pressure to the thighs using the first and second pressure applicators while maintaining the positive pressure to the calves using the third and fourth pressure applicators. 10. A method according to claim 1, wherein said arranging step includes arranging a first pressure applicator externally around one buttocks muscle of the patient, arranging a second pressure applicator externally around another buttocks muscle of the patient, arranging a third pressure applicator externally around one thigh of the patient, arranging a fourth pressure applicator externally around another thigh of the patient, arranging a fifth pressure applicator externally around one calf of the patient, and arranging a sixth pressure applicator externally around another calf of the patient, and said applying step includes: applying a negative pressure to the buttocks muscles during the cardiac systole using the first and second pressure applicators, andthen applying the negative pressure to the thighs during the cardiac systole using the third and fourth pressure applicators while maintaining the negative pressure to the buttocks muscles using the first and second pressure applicators, andthen applying a negative pressure to the calves during the cardiac systole using the fifth and sixth pressure applicators while maintaining the negative pressure to the buttocks muscles and to the thighs using the first, second, third and fourth pressure applicators. 11. A method according to claim 10, wherein said step of removing the negative pressure includes: removing, during the cardiac diastole, the negative pressure applied to the calves by the fifth and sixth pressure applicators while maintaining the negative pressure to the buttocks muscles and to the thighs using the first, second, third and fourth pressure applicators,then removing, during the cardiac diastole, the negative pressure applied to the thighs by the third and fourth pressure applicators while maintaining the negative pressure to the buttocks muscles using the first and second pressure applicators, andthen removing, during the cardiac diastole, the negative pressure to the buttocks muscles using the first and second pressure applicators. 12. A method according to claim 10, wherein said step of removing the negative pressure includes: applying, during the cardiac diastole, a positive pressure to the calves using the fifth and sixth pressure applicators while maintaining the negative pressure to the buttocks muscles and to the thighs using the first, second, third and fourth pressure applicators,then applying, during the cardiac diastole, a positive pressure to the thighs using the third and fourth pressure applicators while maintaining the positive pressure to the calves using the third and fourth pressure applicators and while maintaining the negative pressure to the buttocks muscles using the first and second pressure applicators, andthen applying, during the cardiac diastole, a positive pressure to the buttocks muscles using the first and second pressure applicators. 13. A method according to claim 1, wherein said step of removing the negative pressure during the cardiac diastole includes increasing the pressure applied to the body segment of the patient to atmospheric pressure. 14. A method according to claim 1, wherein said arranging step includes securing said at least one housing to the body segment of the patient using a sealing strap attached to an exterior of said shell. 15. A method according to claim 1, wherein said step of applying negative pressure includes removing air from between said plurality of spacer elements. 16. A method according to claim 1, further comprising: a resilient material attached to a surface of said interior wall and configured to contact the body segment of the patient. 17. A method according to claim 1, wherein said removing step includes applying a positive pressure, relative to atmospheric pressure, to the body segment of the patient during the cardiac diastole using the pressure applicator. 18. A method according to claim 17, wherein the positive pressure is substantially in the range of 50 to 100 mm Hg. 19. An apparatus for treating congestive heart failure (CHF) in a patient, said apparatus comprising: at least one pressure applicator arranged externally around a body segment of the patient; andmeans for causing said at least one pressure applicator to apply negative pressure, relative to atmospheric pressure, to the body segment of the patient during cardiac systole, thereby reducing ventricular afterload in the patient, and for causing said at least one pressure applicator to remove the negative pressure to the body segment of the patient during cardiac diastole,wherein at least one said pressure applicator includes at least one housing adapted to surround the body segment of the patient, said at least one housing having a shell that includes an interior wall, an exterior wall, and a plurality of spacer elements configured to maintain said exterior wall in spaced relation with said interior wall, said plurality of spacer elements including a plurality of air transfer openings that permit air flow between said exterior wall and said interior wall. 20. An apparatus according to claim 19, wherein the negative pressure is substantially in the range of −30 to −50 mm Hg. 21. An apparatus according to claim 19, further comprising: means for causing said at least one pressure applicator to apply a positive pressure, relative to atmospheric pressure, to the body segment of the patient during the cardiac diastole. 22. An apparatus according to claim 21, wherein the positive pressure is substantially in the range of 50 to 100 mm Hg.
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이 특허에 인용된 특허 (15)
Goldenberg Zinovy (2074 20th La. ; Apt. 3E Brooklyn NY 11214), Abdominal exercise device.
Scarberry Eugene N. (208 Terrace Ct. Rd. Trafford PA 15085) Handke Patrick M. (416 Brunner Dr. Monroeville PA 15146), Apparatus for application of pressure to a human body.
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