CN2189913Y - Artificial mechanical aortic valve - Google Patents
Artificial mechanical aortic valve Download PDFInfo
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- CN2189913Y CN2189913Y CN 94200124 CN94200124U CN2189913Y CN 2189913 Y CN2189913 Y CN 2189913Y CN 94200124 CN94200124 CN 94200124 CN 94200124 U CN94200124 U CN 94200124U CN 2189913 Y CN2189913 Y CN 2189913Y
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- Prior art keywords
- valve
- lobe
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- plane
- leaf
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- 210000001765 aortic valve Anatomy 0.000 title claims abstract description 13
- 210000000056 organ Anatomy 0.000 claims abstract 2
- 230000033001 locomotion Effects 0.000 claims description 12
- 230000015556 catabolic process Effects 0.000 claims description 8
- 210000000709 aorta Anatomy 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 210000005240 left ventricle Anatomy 0.000 claims description 4
- 101100226116 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) esa-1 gene Proteins 0.000 claims 1
- 230000017531 blood circulation Effects 0.000 abstract description 17
- 230000006870 function Effects 0.000 abstract description 5
- 210000003709 heart valve Anatomy 0.000 abstract description 5
- 206010018910 Haemolysis Diseases 0.000 abstract description 4
- 230000008588 hemolysis Effects 0.000 abstract description 4
- 230000004217 heart function Effects 0.000 abstract description 3
- 208000007536 Thrombosis Diseases 0.000 abstract description 2
- 210000003484 anatomy Anatomy 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 210000003050 axon Anatomy 0.000 abstract 2
- 230000002308 calcification Effects 0.000 abstract 1
- 244000030765 Phaleria macrocarpa Species 0.000 description 6
- 210000004369 blood Anatomy 0.000 description 6
- 239000008280 blood Substances 0.000 description 6
- 239000000835 fiber Substances 0.000 description 5
- 230000002861 ventricular Effects 0.000 description 4
- 210000003743 erythrocyte Anatomy 0.000 description 3
- 230000002980 postoperative effect Effects 0.000 description 3
- 210000003291 sinus of valsalva Anatomy 0.000 description 3
- 230000001788 irregular Effects 0.000 description 2
- 210000000265 leukocyte Anatomy 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001732 thrombotic effect Effects 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 230000000004 hemodynamic effect Effects 0.000 description 1
- 230000002949 hemolytic effect Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000004115 mitral valve Anatomy 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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Abstract
The artificial mechanical aortic valve is an artificial organ of human body, belongs to the class of artificial mechanical heart valves, and mainly comprises a crown-shaped outline structure similar to the normal aortic valve ring structure and three equally symmetrical fan-shaped valve blades. Every crown apex inboard respectively has an axon perpendicular with the valve ring plane, every axon has two axial planes, every axial plane has an axicon, a pair of open angle control ridge and a pair of closed angle control ridge, this valve can be used to replace most of aortic valve that lose function, have high anastomotic nature with aortic valve ring anatomical structure, prevent the emergence of valve week leakage effectively, effectual central blood flow has been guaranteed to great central open area, cross the valve and pressed greatly to reduce, hemolysis and thrombus formation have also been reduced simultaneously, to the patient of valve serious calcification and the patient of poor cardiac function, the utility model discloses a better selection.
Description
The present invention is the manufactured gas official of human body, belongs to artificial mechanical heart valve's class.
Mechanical heart valve is used for permutation function and cacoplastic cardiac valve, be applied to clinical mechanical valve prosthesis at present and be divided into two big classes substantially: dish-shaped lobe tilts, as Bjork-Shiley, Medtronic Hall lobe etc. and bilobed flap, as Stjude lobe and CarboMedics lobe.These mechanical valve prosthesiss are formed by the lobe ring and the suture loop of planar structure.As everyone knows, the normal aortic valvular ring of human body is " Phaleria macrocarpa " shape, does not have planar definition.And be applied to clinical various types of mechanical valve prosthesiss at present all is planar structure, and when replacing aorta with the mechanical valve prosthesis of these types, have following shortcoming: (1) is relatively poor with matching property of human aortic lobe ring anatomical structure.When changing aorta with the mechanical valve prosthesis of these types, " Phaleria macrocarpa " lobe ring is matched by suture tractive to plane, mechanical prosthetic valve place and mechanical prosthetic valve suture loop.Therefore between aortic valvular ring and mechanical prosthetic valve suture loop, exist very hightension, the tension force maximum of aortic valvular ring love that minimum point is held.If overtension, the aortic valvular ring tissue can be cut by suture, produces the slit between aortic valvular ring and mechanical prosthetic valve suture loop, enters aortal blood by the ventricle ejaculation through valve and is back in the ventricle by this slit at ventricular diastole.Perivalvular leakage thereby generation.In the postmortem of postoperative death case, the perivalvular leakage positive rate is up to 10%.Perivalvular leakage is still one of aortic valve replacement main complications at present.Perivalvular leakage can make erythrocyte fragmentation produce haemolysis except that causing the hemodynamic change owing to backflow blood has high shear force, and the situation severe patient is operative repair or implant new valve once more.The compartment space direction extends for valve portion and ALMV between the chamber because the fiber lobe ring bottom fiber of left side hat hole and NCS is organized left, and when being pulled to the aorta direction in fiber lobe ring bottom, ALMV is subjected to tractive, and mitral valve function may be undermined.Deformation takes place because of the fiber lobe is subjected to the tractive distortion in normal aortic sinus structure, and the steady eddy current of physiological becomes irregular eddy current in the hole, and the irregular eddy current that produces in the hole can impel thrombosis.［ 2 ］ producing the bigger lobe of striding presses and eddy current.In known this mechanical valve prosthesis, the lobe leaf is by peripheral breakdown, and the lobe leaf of breakdown occupies lobe ring central area and efferent tract central area fully.This design makes and enters aortal flow axis by valve and depart from lobe ring and efferent tract axis and produce steadily blood flow or eddy current (Yoganathan, 1978,1986).Erythrocyte under shear action in the eddy current can break and produce haemolysis, and leukocyte, platelet can be broken activation, and the generation of eddy current makes blood flow off-energy by valve the time, thereby blood flow is being fallen by producing pressure before and after the mechanical valve prosthesis, claims to stride lobe and presses.Now Chang Yong several mechanical valve prosthesiss lobe of on average striding that can produce 12-14mmHg after being placed into human body is pressed.In ventricular systole mid-term, striding that lobe presses can be up to (Goldenberg, 1990) more than the 26mmHg.The size of striding the lobe pressure has reflected the size of left ventricular function consumption lost work on mechanical valve prosthesis.Under the certain situation of left ventricular function, the lost work that is lost on the mechanical valve prosthesis is big more, and the effective output work of left ventricle is more little.For the relatively poor patient of cardiac function, stride the lobe pressure and can produce considerable influence the postoperative patient cardiac function.Bigger stride lobe cut down output survive relevant with less mechanical prosthetic valve ring effective area and less center blood flow.The dish-shaped lobe that tilts has large and small two eccentric openings.Bilobed flap central part aperture area only for the lobe anchor ring long-pending 20%.Blood flow by normal aortic valve is the center blood flow, also is the center blood flow by the most effective of artificial valve with physiological blood flow, as the blood flow by the SANYE biological cardiac valves.Partial center blood flow and uneven blood flow can produce bigger eddy current and shearing force causes erythrocyte hemolysis and activates platelet and leukocyte, thereby increases thrombotic danger (Bokros, 1992).(3) can produce the bigger capacity of closing.The blood flow of bigger backflow left ventricle in the closed procedure of valve pass, the backflow blood volume accounts for the percentage ratio of penetrating the blood total amount and is called the capacity of closing (Closing Volume).The capacity of closing of the various mechanical valve prosthesiss of clinical practice at present is about 15%, and the normal aortal capacity of closing is 4% only, and the capacity of closing is relevant with the time, and the shut-in time is long more, and the capacity of closing is big more.
The purpose of this mechanical valve prosthesis invention is: (1) improves mechanical valve prosthesis hematodinamics index.(2) reduce the thrombotic of mechanical valve prosthesis.(3) reduce hemolytic.(4) the matching property of raising valve suture loop and aortic valve anatomical structure makes valve be easier to insert.
The design belongs to three lobe leaf mechanical valve prosthesiss, similar design is at the U.S. (US Patent Number 4,820,299) and Europe (International Publication Number:WO 91/07148 and WO 85/04094) description was all arranged.The design and their fundamental difference point are: ［ 1 ］ its " Phaleria macrocarpa " shape mechanical prosthetic valve zona contour structures and aortal fiber lobe ring structure match.［ 2 ］ its pivot structure uniqueness.［ 3 ］ to be the class sphere fan-shaped for its lobe leaf.［ 4 ］ its lobe leaf core is to aorta direction motion breakdown valve.
The present invention is like this design: artificial aortic valve mainly is made up of the lobe ring of three Guan Feng and three fan-shaped lobe leaves etc. by one, respectively there is an aixs cylinder with the vertical rhizoma sparganic column of lobe plane of a loop the inboard of each Guan Fengchu, every aixs cylinder has two axial planes, every axial plane has a pair of open angle control ridge and a pair of angle control ridge of closing, every axial plane central part has an axle recessed, the crown of roll of lobe leaf both sides be embedded in two relative axial planes the axle recessed in, and serve as that axle can be done the beginning motion with the line of 2 chimeric points, lobe ring lateral surface has annular recessed crack, lobe circulation inlet is inboard to have depression from inside to outside to close band, and the lobe leaf that its outflow oral-lateral ends at annular bank shape is closed ridge.Lobe leaf core moves to the aorta direction.Lobe leaf peripheral part makes the valve breakdown to the motion of left ventricle direction.During the complete breakdown of valve, lobe leaf plane is the 80-85 degree with the angle on axle plane, recessed central point place, and the lobe collar extension is divided into core and three peripheral parts by three lobe leaves and aixs cylinder.Lobe ring core account for whole lobe anchor ring long-pending 40% to 50%.Lobe leaf each several part moves round about and closes up mutually valve is closed.When valve was closed fully, angle was the 35-45 degree between lobe leaf and the plane, pivoting point place.The side closure ridge is superimposed in each lobe leaf circumferential edges and the valve, and the closure of closing the back valve is strengthened, and has reduced the blood reflux stream after valve is closed.
Compare with the existing valve of using clinically, the design is improved in many aspects.At first the design has " Phaleria macrocarpa " shape contour structures with normal aortic valvular ring structural similarity, matches with the aortic valve ring structure on dissecting.Between aortic valvular ring and mechanical suture loop, there is not or only exists less tension force after inserting the aortic valve position.The danger that reduces or avoided aortic valvular ring to be cut by suture, thus the generation of perivalvular leakage can be prevented effectively.The normal aortic sinus structure of postoperative can be retained complete, and the normal physiological eddy current is not destroyed, and mechanical prosthetic valve ring and suture loop constantly " are washed away " by blood flow in aortic sinus, effectively the formation of anti-tampon.Moreover the core area account for whole lobe anchor ring long-pending 40% to 50%, thereby guaranteed enough big physiological center blood flow, stride lobe and press and reduce thereby can make.The 3rd, this valve increases because of " Phaleria macrocarpa " shape structure makes the valve height.In off position, lobe leaf and valve plane angle are the 35-45 degree, angle is the 80-85 degree when decontroling fully, lobe leaf movement angle is the 40-45 degree, than the traditional mechanical valve, the movement angle (60 to 80 degree) of dish-shaped lobe or bilobed flap of tilting reduces by 15 to 35 degree, thus the shut-in time shorten greatly, close capacity (closing Volume) and significantly reduce.
Enforcement of the present invention is provided by following drawings and Examples:
Accompanying drawing 1 and accompanying drawing 2 are external form sketch maps: valve branch other places closed condition and open state.
Accompanying drawing 3 is a valve longitudinal section sketch map:
Accompanying drawing 4 and accompanying drawing 5 are respectively aixs cylinder vertical view and front elevation.
Figure axis recessed 7 is garden shape depression, and longitudinal section is trapezoidal.Have two diabolo convexs outstanding to the inside on each axial plane 6, claim open angle control ridge 10 and 12 and close angle control ridge 11 and 13, they control each lobe leaf 3 open and position and angle when closing respectively.
Accompanying drawing 6 is axial plane 6 structure front schematic view.
During valve place closed condition, lobe leaf 3 planes and the design of pivoting point interplanar angle [alpha] are at the 35-45 degree among the figure, and when valve was opened, the 3 motion angle β designs of lobe leaf were between the 40-45 degree; Lobe leaf 3 planes and centring point plane are the angle of alpha+beta between the 80-85 degree.Center interior angle control ridge 12 and 13 and the surrounding zone in the angle control ridge 10 and 11 and the lobe leaf between a passage is all arranged, it is recessed 7 to stride across axle, and blood flow is during via this passage, and axle recessed 7 obtains " flushing ", make the pivot structure operate as normal, anti-effectively tampon forms in this zone.
Accompanying drawing 7 is a valve-open shape vertical view:
Accompanying drawing 8 is a lobe leaf front elevation.
It is impartial symmetrical fan-shaped that figure mesopetalum leaf 3 is, and there are two crown of rolls 14 both sides, and crown of roll 14 is trapezoidal, cooperates with axle recessed 7.
The material that is used to make mesopetalum ring 1 of the present invention and lobe leaf 3 should have good blood compatibility, and proportion is little, and the metal or alloy of hard wear resistant as titanium, titanium alloy, cobalt, nickel alloy etc., or is used RESEARCH OF PYROCARBON.Lobe ring 1 and lobe leaf 3 each several part surfaces answer the height flat lay the grain sliding.When being main material with the RESEARCH OF PYROCARBON, should adopt metal material is that " nuclear " makes lobe ring 1 and lobe leaf 3, and the each several part structure can clearly be displayed in supervision of X-line and the camera chain, so that after valve is placed into human body, can clearly monitor the valve working condition.
Claims (10)
1, artificial aortic valve is the artificial organ of human body, belong to artificial mechanical valve prosthesis's class, it is characterized in that: it mainly is made up of three hat lobe rings 1 at peaks 4 and three fan-shaped lobe leaves 3 etc. by one, respectively there is an aixs cylinder 2 with the vertical rhizoma sparganic column in lobe ring 1 plane the inboard at each hat 4 place, peak, each aixs cylinder 2 has two axial planes 6, every axial plane 6 central parts have an axle recessed 7 and a pair of open angle control ridge 10,12 and a pair of angle control ridge 11 of closing, 13, the crown of roll 14 of lobe leaf 3 both sides is embedded in the axle recessed 7 of two relative axial planes 6, and serve as that axle can be done switch motion with line between 2 chimeric points, lobe ring 1 lateral surface has annular recessed crack 5, lobe ring 1 inflow entrance inboard has from inside to outside depression to close to be with 8, closes with 8 and closes ridge 9 flowing out the lobe leaf that oral-lateral ends at annular bank shape.
2, valve according to claim 1 is characterized in that: lobe ring 1 is a regular garden shape, and drawing the mark fluctuating on the horizontal plane has three hat peaks 4.
3, valve according to claim 1 is characterized in that: three lobe leaves 3 are impartial symmetrical fan-shaped, and there are two crown of rolls 14 both sides.
4, valve according to claim 1 is characterized in that: three aixs cylinder 2 central point lines are equilateral triangle.
5, valve according to claim 1 is characterized in that: 6 angles of two axial planes on the same aixs cylinder 2 are 120 degree, and adjacent axial plane 6 is parallel on each axial plane 6 and other aixs cylinder 2.
6, valve according to claim 1 is characterized in that: axle recessed 7 is garden shape depression, and longitudinal section is trapezoidal.
7, valve according to claim 1 is characterized in that: axial plane 6 is vertical with lobe ring 1 plane.
8, valve according to claim 1, it is characterized in that: when lobe leaf 3 is done the switch motion, lobe leaf 3 cores are to aorta direction motion, and peripheral part can make the valve breakdown to the motion of left ventricle direction, otherwise lobe leaf 3 each several parts move round about and close up mutually valve is closed.
9, according to claim 1 or 8 described valves, it is characterized in that: when valve is closed fully, lobe leaf 3 and the design of pivoting point place interplanar angle [alpha] are between the 35-45 degree, and lobe leaf 3 is 80-85 degree angle with the pivoting point plane during valve complete opening, and the 3 motion angle β designs of lobe leaf are between the 40-45 degree.
10, according to claim 1 or 8 described valves, it is characterized in that: during the complete breakdown of lobe leaf 3, aixs cylinder 2 is divided into core and three peripheral parts with lobe leaf 3 with lobe ring 1, and the core area accounts for the 40-50% of lobe collar extension area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94200124 CN2189913Y (en) | 1994-01-11 | 1994-01-11 | Artificial mechanical aortic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94200124 CN2189913Y (en) | 1994-01-11 | 1994-01-11 | Artificial mechanical aortic valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2189913Y true CN2189913Y (en) | 1995-02-22 |
Family
ID=33820543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94200124 Expired - Fee Related CN2189913Y (en) | 1994-01-11 | 1994-01-11 | Artificial mechanical aortic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2189913Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104918582A (en) * | 2012-12-19 | 2015-09-16 | W.L.戈尔及同仁股份有限公司 | Planar zone in prosthetic heart valve leaflet |
-
1994
- 1994-01-11 CN CN 94200124 patent/CN2189913Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104918582A (en) * | 2012-12-19 | 2015-09-16 | W.L.戈尔及同仁股份有限公司 | Planar zone in prosthetic heart valve leaflet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |