Patent US4747922A successfully refreshed from Google Patents.
Patent US5409444A successfully refreshed from Google Patents.
US5409444A
Expired / Lapsed
US
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Method and apparatus to reduce injury to the vascular system
Assignee: DSM Biomedical Inc
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Filing: 1992-03-04
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Granted: 1995-04-25
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Expires: 2012-03-04
Abstract
Abstract An apparatus and method for reducing peak systolic blood pressure and the rate of change of velocity of the blood flow in a living being by passively absorbing a portion of the blood pressure during systole. The apparatus comprises an expandable/contractible chamber, e.g., a balloon, which is internally pressurized by a gas, e.g., carbon dioxide. The chamber has a surface portion which is moveable between first and second positions and vice versa when the chamber is contracted and expanded, respectively. The chamber is sufficiently small to be located at a desired situs, such as the aorta, so that the surface portion is subjected to blood pressure, whereupon it moves to the second position during systole to reduce the magnitude thereof while also reducing the rate of change of the velocity of the blood flow. The chamber expands so that the surface portion automatically returns to the first position to release an absorbed portion of the blood pressure during diastole, all the while maintaining average blood flow and pressure. A releasable anchoring mechanism is provided to hold the chamber in place within the patient's body.
Inventors
- 👤 Kenneth Kensey
- 👤 John Nash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:18
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/12; A61B17/12022; A61B17/12099; A61B17/12109; A61B17/12131; A61B17/12136; A61M; A61M25/00; A61M25/01; A61M25/02; A61M25/04
Claims Analysis
Total Claims: 68
Claim 1
Independent Claim
129 words
A method of reducing the magnitude of systolic blood pressure of a living being by the use of passive pressure absorption means comprising a first chamber having a gas therein pressurizing said chamber to a predetermined internal pressure, said chamber being expandable to an expanded state and contractible to a contracted state, and vice versa, said method comprising locating said first chamber within the body of said being at a desired situs to subject said first chamber to the being's blood pressure, whereupon during systole said first chamber contracts from said expanded state to said contracted state to thereby reduce the magnitude of the systolic pressure, said first chamber expanding to said expanded stated during diastole, whereupon said first chamber releases an absorbed portion of said systolic blood pressure.
Claim 2
Independent Claim
129 words
A method of reducing the magnitude of systolic blood pressure of a living being by the use of passive pressure absorption means comprising a first chamber having a gas therein pressurizing said chamber to a predetermined internal pressure, said chamber being expandable to an expanded state and contractible to a contracted state, and vice versa, said method comprising locating said first chamber within the body of said being at a desired situs to subject said first chamber to the being's blood pressure, whereupon during systole said first chamber contracts from said expanded state to said contracted state to thereby reduce the magnitude of the systolic pressure, said first chamber expanding to said expanded stated during diastole, whereupon said first chamber releases an absorbed portion of said systolic blood pressure.
Claim 3
Dependent Claim
28 words
The method of claim 1 wherein said gas is introduced into said first chamber after said passive pressure absorption means is located within the body of said being.
Claim 4
Dependent Claim
14 words
The method of claim 1 wherein said first portion is located within the aorta.
Claim 5
Dependent Claim
18 words
The method of claim 1 additionally comprising providing a second chamber in fluid communication with said first chamber.
Claim 6
Dependent Claim
15 words
The method of claim 4 wherein said second chamber is of a predetermined volumetric capacity.
Claim 7
Dependent Claim
12 words
The method of claim 5 wherein said predetermined volumetric capacity is fixed.
Claim 8
Dependent Claim
12 words
The method of claim 5 wherein said predetermined volumetric capacity is variable.
Claim 9
Dependent Claim
16 words
The method of claim 4 wherein said second chamber is located remote from said first chamber.
Claim 10
Dependent Claim
18 words
The method of claim 8 wherein said second chamber is located outside of the body of said being.
Claim 11
Dependent Claim
17 words
The method of claim 8 wherein said second chamber is located within the body of said being.
Claim 12
Dependent Claim
31 words
The method of claim 1 wherein a portion of said apparatus is made radiographic to facilitate the location of said first portion at said situs within the body of said being.
Claim 13
Dependent Claim
42 words
The method of claim 1 wherein said first chamber is located within said vascular system and wherein said method additionally comprises providing a second chamber in fluid communication with said first chamber, said second chamber being located externally of said vascular system.
Claim 14
Dependent Claim
17 words
The method of claim 12 wherein said second chamber is located outside the body of said being.
Claim 15
Independent Claim
142 words
A method of reducing the magnitude of systolic blood pressure of a living being by the use of passive pressure absorption means comprising a first chamber and a second chamber in fluid communication with each other, said first chamber having a gas therein and being expandable to an expanded state and contractible to a contracted state, and vice versa, said method comprising locating said second chamber outside the body of said being, locating said first chamber within the body of said being at a desired situs to subject said first chamber to the being's blood pressure, whereupon during systole said first chamber contracts from said expanded state to said contracted state to thereby reduce the magnitude of the systolic pressure, said first chamber expanding to said expanded stated during diastole, whereupon said chamber releases an absorbed portion of said systolic blood pressure.
Claim 16
Independent Claim
142 words
A method of reducing the magnitude of systolic blood pressure of a living being by the use of passive pressure absorption means comprising a first chamber and a second chamber in fluid communication with each other, said first chamber having a gas therein and being expandable to an expanded state and contractible to a contracted state, and vice versa, said method comprising locating said second chamber outside the body of said being, locating said first chamber within the body of said being at a desired situs to subject said first chamber to the being's blood pressure, whereupon during systole said first chamber contracts from said expanded state to said contracted state to thereby reduce the magnitude of the systolic pressure, said first chamber expanding to said expanded stated during diastole, whereupon said chamber releases an absorbed portion of said systolic blood pressure.
Claim 17
Independent Claim
124 words
A method of reducing the magnitude of the change in velocity of the flow of blood in a living being by the use of passive means comprising a first chamber having a gas therein pressurizing said chamber to a predetermined internal pressure, said chamber being expandable to an expanded state and contractible to a contracted state, and vice versa, said method comprising locating said first chamber within the body of said being at a desired situs to subject said first chamber to the being's blood flow, whereupon during systole said first chamber contracts from said expanded state to said contracted state to thereby reduce the magnitude of the change in velocity of said blood, said first chamber expanding to said expanded state during diastole.
Claim 18
Independent Claim
124 words
A method of reducing the magnitude of the change in velocity of the flow of blood in a living being by the use of passive means comprising a first chamber having a gas therein pressurizing said chamber to a predetermined internal pressure, said chamber being expandable to an expanded state and contractible to a contracted state, and vice versa, said method comprising locating said first chamber within the body of said being at a desired situs to subject said first chamber to the being's blood flow, whereupon during systole said first chamber contracts from said expanded state to said contracted state to thereby reduce the magnitude of the change in velocity of said blood, said first chamber expanding to said expanded state during diastole.
Claim 19
Dependent Claim
26 words
The method of claim 15 wherein said gas is introduced into said first chamber after said passive means is located within the body of said being.
Claim 20
Dependent Claim
14 words
The method of claim 15 wherein said first chamber is located within the aorta.
Claim 21
Dependent Claim
18 words
The method of claim 15 additionally comprising providing a second chamber in fluid communication with said first chamber.
Claim 22
Dependent Claim
15 words
The method of claim 18 wherein said second chamber is of a predetermined volumetric capacity.
Claim 23
Dependent Claim
12 words
The method of claim 19 wherein said predetermined volumetric capacity is fixed.
Claim 24
Dependent Claim
12 words
The method of claim 19 wherein said predetermined volumetric capacity is variable.
Claim 25
Dependent Claim
16 words
The method of claim 18 wherein said second chamber is located remote from said first chamber.
Claim 26
Dependent Claim
17 words
The method of claim 22 wherein said second chamber is located within the body of said being.
Claim 27
Dependent Claim
31 words
The method of claim 15 wherein a portion of said apparatus is made radiographic to facilitate the location of said first portion at said situs within the body of said being.
Claim 28
Dependent Claim
42 words
The method of claim 15 wherein said first chamber is located within said vascular system and wherein said method additionally comprises providing a second chamber in fluid communication with said first chamber, said second chamber being located externally of said vascular system.
Claim 29
Dependent Claim
17 words
The method of claim 25 wherein said second chamber is located outside the body of said being.
Claim 30
Independent Claim
138 words
A method of reducing the magnitude of the change in velocity of the flow of blood in a living being by the use of passive means comprising a first chamber and a second chamber in fluid communication with each other, said first chamber having a gas therein and being expandable to an expanded state and contractible to a contracted state, and vice versa, said method comprising locating said second chamber outside the body of said being, locating said first chamber within the body of said being at a desired situs to subject said first chamber to the being's blood flow, whereupon during systole said first chamber contracts from said expanded state to said contracted state to thereby reduce the magnitude of the change in velocity of said blood, said first chamber expanding to said expanded stated during diastole.
Claim 31
Independent Claim
138 words
A method of reducing the magnitude of the change in velocity of the flow of blood in a living being by the use of passive means comprising a first chamber and a second chamber in fluid communication with each other, said first chamber having a gas therein and being expandable to an expanded state and contractible to a contracted state, and vice versa, said method comprising locating said second chamber outside the body of said being, locating said first chamber within the body of said being at a desired situs to subject said first chamber to the being's blood flow, whereupon during systole said first chamber contracts from said expanded state to said contracted state to thereby reduce the magnitude of the change in velocity of said blood, said first chamber expanding to said expanded stated during diastole.
Claim 32
Independent Claim
123 words
An apparatus for reducing the magnitude of systolic blood pressure in the cardiovascular system of a living being, said apparatus comprising passive pressure absorption means, said passive pressure absorption means comprising a first chamber means having a gas therein which is pressurized to a predetermined internal pressure, said chamber means for expansion and contraction when subjected to the being's blood pressure, said first chamber means being arranged to be located at a desired situs within the body of said being so that said first chamber is subjected to the being's blood pressure, whereupon the first chamber means contracts to a contracted state by said blood pressure during systole to reduce the magnitude of systolic pressure, and expands to an expanded state during diastole.
Claim 33
Independent Claim
123 words
An apparatus for reducing the magnitude of systolic blood pressure in the cardiovascular system of a living being, said apparatus comprising passive pressure absorption means, said passive pressure absorption means comprising a first chamber means having a gas therein which is pressurized to a predetermined internal pressure, said chamber means for expansion and contraction when subjected to the being's blood pressure, said first chamber means being arranged to be located at a desired situs within the body of said being so that said first chamber is subjected to the being's blood pressure, whereupon the first chamber means contracts to a contracted state by said blood pressure during systole to reduce the magnitude of systolic pressure, and expands to an expanded state during diastole.
Claim 34
Dependent Claim
30 words
The apparatus of claim 28 wherein said first chamber means is arranged to automatically return to said expanded state to release an absorbed portion of the blood pressure during diastole.
Claim 35
Dependent Claim
14 words
The apparatus of claim 28 wherein said first chamber means comprises an inflatable balloon.
Claim 36
Dependent Claim
13 words
The apparatus of claim 30 wherein the material forming said balloon is inextensible.
Claim 37
Dependent Claim
19 words
The apparatus of claim 30 additionally comprising a second chamber means in fluid communication with said first chamber means.
Claim 38
Dependent Claim
16 words
The apparatus of claim 32 wherein said second chamber means is of a predetermined volumetric capacity.
Claim 39
Dependent Claim
16 words
The apparatus of claim 33 wherein said second chamber means is of a variable volumetric capacity.
Claim 40
Dependent Claim
16 words
The apparatus of claim 33 wherein said second chamber means is of a fixed volumetric capacity.
Claim 41
Dependent Claim
19 words
The apparatus of claim 28 additionally comprising a second chamber means in fluid communication with said first chamber means.
Claim 42
Dependent Claim
16 words
The apparatus of claim 36 wherein said second chamber means is of a predetermined volumetric capacity.
Claim 43
Dependent Claim
16 words
The apparatus of claim 37 wherein said second chamber means is of a fixed volumetric capacity.
Claim 44
Dependent Claim
16 words
The apparatus of claim 38 wherein said second chamber means is of a variable volumetric capacity.
Claim 45
Dependent Claim
20 words
The apparatus of claim 39 wherein said second chamber is arranged to be located outside the body of said being.
Claim 46
Dependent Claim
20 words
The apparatus of claim 38 wherein said second chamber is arranged to be located outside the body of said being.
Claim 47
Dependent Claim
18 words
The apparatus of claim 28 additionally comprising anchoring means for anchoring said first chamber means at said situs.
Claim 48
Dependent Claim
15 words
The apparatus of claim 42 wherein said anchoring means is releasably securable to said situs.
Claim 49
Dependent Claim
52 words
The apparatus of claim 28 wherein said first chamber means is configured for location within said vascular system and wherein said passive pressure absorption means additionally comprises a second chamber means in fluid communication with said first chamber means, said second chamber means being arranged for location externally of said vascular system.
Claim 50
Dependent Claim
20 words
The apparatus of claim 44 wherein said second chamber means is arranged for location outside the body of said being.
Claim 51
Independent Claim
118 words
An apparatus for reducing the magnitude of the change in velocity of blood flow in a living being, said apparatus comprising first chamber means for expansion and contraction when subjected to said being's blood pressure and having a gas therein which is pressurized to a predetermined internal pressure, said first chamber means being arranged to be located at a desired situs within the body of said being so that said first chamber means is subjected to the being's blood flow, whereupon said first chamber means contracts to a contracted state by said blood flow during systole to thereby reduce the magnitude of the change in its velocity, said first chamber means expanding to an expanded stated during diastole.
Claim 52
Independent Claim
118 words
An apparatus for reducing the magnitude of the change in velocity of blood flow in a living being, said apparatus comprising first chamber means for expansion and contraction when subjected to said being's blood pressure and having a gas therein which is pressurized to a predetermined internal pressure, said first chamber means being arranged to be located at a desired situs within the body of said being so that said first chamber means is subjected to the being's blood flow, whereupon said first chamber means contracts to a contracted state by said blood flow during systole to thereby reduce the magnitude of the change in its velocity, said first chamber means expanding to an expanded stated during diastole.
Claim 53
Dependent Claim
14 words
The apparatus of claim 46 wherein said first chamber means comprises an inflatable balloon,
Claim 54
Dependent Claim
13 words
The apparatus of claim 47 wherein the material forming said balloon is inextensible.
Claim 55
Dependent Claim
18 words
The apparatus of claim 46 additionally comprising a second chamber means in fluid communication with said first chamber,
Claim 56
Dependent Claim
16 words
The apparatus of claim 49 wherein said second chamber means is of a predetermined volumetric capacity,
Claim 57
Dependent Claim
16 words
The apparatus of claim 50 wherein said second chamber means is of a fixed volumetric capacity,
Claim 58
Dependent Claim
20 words
The apparatus of claim 51 wherein said second chamber is arranged to be located outside the body of said being.
Claim 59
Dependent Claim
16 words
The apparatus of claim 50 wherein said second chamber means is of a variable volumetric capacity,
Claim 60
Dependent Claim
20 words
The apparatus of claim 53 wherein said second chamber is arranged to be located outside the body of said being.
Claim 61
Dependent Claim
18 words
The apparatus of claim 46 additionally comprising anchoring means for anchoring said first chamber means at said situs,
Claim 62
Dependent Claim
15 words
The apparatus of claim 55 wherein said anchoring means is releasably securable to said situs.
Claim 63
Dependent Claim
51 words
The apparatus of claim 46 wherein said first chamber means is configured for location within said vascular system and wherein said passive pressure absorption means additionally comprises a second chamber means in fluid communication with said first chamber means, said second chamber being arranged for location externally of said vascular system.
Claim 64
Dependent Claim
20 words
The apparatus of claim 57 wherein said second chamber means is arranged for location outside the body of said being.
Claim 65
Independent Claim
144 words
An apparatus for reducing the magnitude of systolic blood pressure in the cardiovascular system of a living being, said apparatus comprising passive pressure absorption means, said passive pressure absorption means comprising a first chamber means and a second chamber means in fluid communication with each other, said second chamber means being arranged to be located outside the body of said being, said first chamber means for expansion and contraction when subjected to the being's blood pressure and having a gas therein, said first chamber means being arranged to be located at a desired situs within the body of said being so that said first chamber means is subjected to the being's blood pressure, whereupon the first chamber means contracts to a contracted state by said blood pressure during systole to reduce the magnitude of systolic pressure and expands to an expanded state during diastole.
Claim 66
Independent Claim
144 words
An apparatus for reducing the magnitude of systolic blood pressure in the cardiovascular system of a living being, said apparatus comprising passive pressure absorption means, said passive pressure absorption means comprising a first chamber means and a second chamber means in fluid communication with each other, said second chamber means being arranged to be located outside the body of said being, said first chamber means for expansion and contraction when subjected to the being's blood pressure and having a gas therein, said first chamber means being arranged to be located at a desired situs within the body of said being so that said first chamber means is subjected to the being's blood pressure, whereupon the first chamber means contracts to a contracted state by said blood pressure during systole to reduce the magnitude of systolic pressure and expands to an expanded state during diastole.
Claim 67
Independent Claim
136 words
An apparatus for reducing the magnitude of the change in velocity of blood flow in a living being, said apparatus comprising a first chamber means and a second chamber means in fluid communication with each other, said second chamber means being arranged for location outside the body of said being, said first chamber means for expansion and contraction when subjected to said being's blood pressure and having a gas therein, said first chamber means being arranged for location at a desired situs within the body of said being so that said first chamber means is subjected to the being's blood flow, whereupon the first chamber means contracts to a contracted state by said blood flow during systole to thereby reduce the magnitude of the change in its velocity and expands to an expanded state during diastole.
Claim 68
Independent Claim
136 words
An apparatus for reducing the magnitude of the change in velocity of blood flow in a living being, said apparatus comprising a first chamber means and a second chamber means in fluid communication with each other, said second chamber means being arranged for location outside the body of said being, said first chamber means for expansion and contraction when subjected to said being's blood pressure and having a gas therein, said first chamber means being arranged for location at a desired situs within the body of said being so that said first chamber means is subjected to the being's blood flow, whereupon the first chamber means contracts to a contracted state by said blood flow during systole to thereby reduce the magnitude of the change in its velocity and expands to an expanded state during diastole.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1998-04-24 | 1998-10-24 | 1999-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-04-24 | 2002-10-24 | 2003-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-04-24 | 2006-10-24 | 2007-04-25 | $7700.00 | Window Closed / Lapsed |