CN1146326A - Mechanical heart valve - Google Patents
Mechanical heart valve Download PDFInfo
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- CN1146326A CN1146326A CN 95111779 CN95111779A CN1146326A CN 1146326 A CN1146326 A CN 1146326A CN 95111779 CN95111779 CN 95111779 CN 95111779 A CN95111779 A CN 95111779A CN 1146326 A CN1146326 A CN 1146326A
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Abstract
The invented mechanical heart valve consists of a valvular frame and two or three dish-plates, on the valvular frame there are two or three slots corresponding to the position of the dish-plate. When the dish-plate closing, the mutual butted dish-plates and together with the inner surface of the valvular frame seal the path of the blood flow, when the dish-plate opens gradually, the whole flow-in face of the dish-plate and partial inner surface of the valvular frame form, together the gradually enlarging single stream path of blood flow, when the dish-plate opens completely, the whole flow-in face of the dish-plate is filled in the slot of the valvular frame and with the whole inner surfuce of the valvular fame together to form the largest single stream path of blood flow, thus when the blood flowing through the mechanical heart valve, it can decrease greatly interference to the blood flow.
Description
The present invention relates to and be used to replace the valvular mechanical heart valve that loses merit in the patient body in the surgical operation, also relate to the mechanical heart valve that is used for artificial heart or heart-assist device, particularly relate to and comprise that a ringwise lobe frame and two or three are constrained on the mechanical heart valves that open and close active video disc on the lobe frame.
The mechanical heart valve of introducing in the United States Patent (USP) 4276658 and 5207707 comprises that a ringwise lobe frame and two or three are constrained on to open and close active video disc on the lobe frame.Blood can flow by mechanical heart valve when video disc is opened, video disc stops blood to flow by mechanical heart valve when video disc is closed, the keying activity of video disc in the lobe frame mainly by the blood pressure difference control of video disc both sides, can be played the such physiological function of human heart valve.
The mechanical heart valve that three video discs are housed at present is constrained on to open and close in the lobe frame by a ringwise lobe frame and three and actively is pentagonal video disc approximately and forms, and two top margins of video disc project into 120 ° angle on lobe frame baseplane when video disc is closed fully.The mechanical heart valve of in United States Patent (USP) 4406022, introducing that three video discs are housed, on the side of its video disc projection is arranged, fluted on the inner surface of lobe frame, video disc relies on pivotally connected between projection and the groove on the lobe frame on the video disc to be constrained on the interior keying activity of lobe frame.The mechanical heart valve of introducing in the United States Patent (USP) 4416029 that three video discs are housed, going into of its video disc has ring on the stream interface, the support that hook-type is arranged on the inner surface of lobe frame, video disc rely on pivotally connected between the support of ring and the hook-type on the lobe frame on the video disc to be constrained on the interior keying activity of lobe frame.The mechanical heart valve of introducing in the United States Patent (USP) 4820299 that three video discs are housed, going out of its video disc has hook on the stream interface, ring and support are arranged on the inner surface of lobe frame, and the supporting and the effect of contraction of the support on the pivotally connected and lobe frame between hook on the video disc dependence video disc and the ring on the lobe frame are constrained on keying activity in the lobe frame.The mechanical heart valve of introducing in the United States Patent (USP) 5123918 and 5207707 that three video discs are housed, chute and rest pad are arranged on the inner surface of lobe frame, the base of video disc serves as that supporting is rolled with the rest pad in the lobe frame respectively when video disc opens and closes, and the side of video disc is constrained on the interior chute of lobe frame and rotates up or down.
The mechanical heart valve that two video discs are housed at present is constrained on by a ringwise lobe frame and two and opens and closes the active video disc that is half garden shape approximately on the lobe frame and forms, and to be the diameter with the lobe frame be the mutual involutory straightway in boundary in the projection of the top margin of video disc on lobe frame baseplane when video disc is closed fully.The mechanical heart valve of in United States Patent (USP) 4276658 and 4689046, introducing that two video discs are housed, on the arc-shaped side edges of its video disc near top margin projection is arranged, fluted on the inner surface of lobe frame, video disc relies on pivotally connected between projection and the groove on the lobe frame on the video disc to be constrained on the interior keying activity of lobe frame.The mechanical heart valve of introducing in the United States Patent (USP) 4692165 and 5002567 that two video discs are housed, fluted on the arc-shaped side edges of its video disc near top margin, on the inner surface of lobe frame projection is arranged, video disc relies on pivotally connected between groove and the projection on the lobe frame on the video disc to be constrained on the interior keying activity of lobe frame.
The dissatisfied place of making us of the mechanical heart valve of above-mentioned two kinds of styles is, when video disc is opened, the interior bore of lobe frame is separated into several channel of blood flow to video disc or video disc is close on the inner surface of lobe frame, thereby blood flow is interfered when blood flows by mechanical heart valve, form more stagnant area and turbulent region, bring out haemolysis and blood coagulation easily, the patient who therefore implants mechanical heart valve needs strict throughout one's life anticoagulant therapy.Because when video disc is opened, the interior bore of lobe frame is separated into several channel of blood flow to video disc or video disc is close on the inner surface of lobe frame, thereby the lobe pressure reduction that collapses that makes mechanical heart valve increases and the effective vent area dwindles, and the cardiac afterload of therefore implanting the patient of this kind mechanical heart valve has increased.
From the above mentioned obviously as can be seen, a large amount of different types of mechanical heart valves have been designed now, and the valvular development work of novel mechanical is still continuing, so as to every year in the world in the surgical operation a large amount of mechanical heart valves that use do further to improve.
The objective of the invention is to propose a kind of mechanical heart valve that two or three video discs are housed, the top margin of video disc is involutory to seal channel of blood flow mutually when video disc is closed, whole video disc is positioned at the outside of sub-thread channel of blood flow all the time when video disc is opened, thereby when blood flows by mechanical heart valve, can reduce the interference that blood flow is subjected to significantly, and the lobe pressure reduction that can reduce significantly to collapse, increase effective vent area and minimizing haemolysis and blood coagulation incidence rate.
Another object of the present invention is to propose a kind of mechanical heart valve that two or three video discs are housed,, thereby can reduce fully time of opening and closing to reduce regurgitation volume as long as realize that each video disc turns over less angle and can open and close fully.
Another object of the present invention is to propose a kind of mechanical heart valve that three video discs are housed altogether, realize the base undulate of lobe frame, one side matches with the anatomical shape of the aortic valvular ring of human body, setting height(from bottom) in the time of can reducing video disc on the other hand and open, thus not only be convenient to the setting height(from bottom) implanting mechanical heart valve in aortic valve lobe position but also can reduce mechanical heart valve significantly.
Another object of the present invention is to propose a kind of mechanical heart valve that two video discs are housed altogether, realize that the inner surface of lobe frame is ellipse garden shape, match, thereby be convenient to implant mechanical heart valve in Bicuspid valve lobe position with the anatomical shape of the mitral annulus of human body.
Task of the present invention is achieved through the following technical solutions: mechanical heart valve comprises that a ringwise lobe frame and two or three are constrained on and opens and closes active video disc on the lobe frame.Blood can flow by mechanical heart valve when video disc is opened, video disc stops blood to flow by mechanical heart valve when video disc is closed, the keying activity of video disc in the lobe frame mainly by the blood pressure difference control of video disc both sides, can be played the such physiological function of human heart valve.The base of video disc is straight shape approximately, and its both sides are side, and the projection on lobe frame baseplane when video disc is closed fully of its top margin is and the mutual involutory straightway of other video disc.On the lobe frame, have and video disc position corresponding two or three breach.Base with breach is arranged on the inner surface of lobe frame is the garden heart, be the cambered way of radius with the top margin and the side intersection of video disc, two ends of the cambered way of lobe frame fend off respectively piece and end block.On the base of the breach of lobe frame, have prevent video disc the base entad or the flange of the trough of belt of centrifugal swing, the base of video disc is stuck in the groove in the flange on the base of breach of lobe frame.The base of video disc serves as that supporting is rolled with the groove in the flange on the base of the breach on the lobe frame respectively when video disc opens and closes, and the side of video disc is close on the cambered way of lobe frame all the time and keeps video disc to be constrained in the cambered way of lobe frame upwards or rotate.When video disc was opened gradually, video disc upwards rotated, and video disc whole goes into stream interface and surround the sub-thread channel of blood flow that increases gradually with the part inner surface of lobe frame.When the video disc complete opening, the side of video disc and the intersection of top margin are blocked by the piece of fending off on the cambered way of lobe frame, and video disc is filled out on the breach of lobe frame, and video disc whole goes into stream interface and surround maximum sub-thread channel of blood flow with the total inner surface of lobe frame.When video disc was closed, each video disc was combined to form convex vaulted mutually, and seals channel of blood flow.
Mechanical heart valve of the present invention, when video disc was closed, the mid point line on the top margin of video disc and base became 30 ° of angles approximately with lobe frame baseplane; When the video disc complete opening, the corner of each video disc is about 50 °, and the complete opening angle can reach about 80 °.Like this, as long as turning over less angle, each video disc can open and close fully.
Mechanical heart valve of the present invention is constrained on by a ringwise lobe frame and three and opens and closes the active pentagonal video disc of curved surface that is approximately on the lobe frame and form.Video disc has two top margins.Two top margins of video disc project into 120 ° angle on lobe frame baseplane when video disc is closed fully.On the lobe frame, have and corresponding three breach in video disc position.The bottom undulate of lobe frame, the bottom of each breach below of lobe frame is a crest, and the bottom of the below between two adjacent breach of lobe frame is a trough, and the anatomical shape of the aortic valvular ring of corrugated bottom of lobe frame and human body matches.
Mechanical heart valve of the present invention is the lobe frame of ellipse garden shape and two approximately by an inner surface and is constrained on and opens and closes the active video disc that is curved surface half ellipse garden shape approximately on the lobe frame and form.On the lobe frame, have and corresponding two breach in video disc position.The top margin of video disc promptly is the string limit of half ellipse garden shape.To be the major axis with the ellipse garden of lobe frame be boundary's involutory straightway mutually in the projection of the top margin of video disc on lobe frame baseplane when video disc is closed fully.The anatomical shape of the ellipse garden shape of lobe frame and the mitral annulus of human body matches.Above-mentioned mechanical heart valve also can be the lobe frame of garden shape and two approximately by an inner surface and be constrained on and open and close the active video disc that is curved surface half garden shape approximately on the lobe frame and form.On the lobe frame, have and corresponding two breach in video disc position.The top margin of video disc promptly is the string limit of half garden shape.To be the diameter with the lobe frame be boundary's involutory straightway mutually in the projection of the top margin of video disc on lobe frame baseplane when video disc is closed fully.
Mechanical heart valve of the present invention, the side of video disc is cambered outwards arc, the cambered way of lobe frame correspondingly is recessed arc, the cambered outwards side of video disc is close on the recessed cambered way of lobe frame all the time, to keep video disc to be constrained in the cambered way of lobe frame upwards or to rotate.The side of above-mentioned video disc also can be the arc that concaves, the cambered way of lobe frame correspondingly is the arc of protrusion, the side that video disc is concaved is close on the cambered way of protrusion of lobe frame all the time, to keep video disc to be constrained in the cambered way of lobe frame upwards or to rotate.The side of above-mentioned video disc can also be the about linearly shape of the projection on the lobe frame baseplane, and the recessed bottom of the cambered way of lobe frame correspondingly is planar shaped approximately, the side of video disc is close on the bottom of planar shaped of cambered way of lobe frame all the time, to keep video disc to be constrained in the cambered way of lobe frame upwards or to rotate.
Mechanical heart valve of the present invention, the outside of the flange on the base of the breach of lobe frame have an outer projection, and there are two interior projections the inboard, and the groove on the base that can snap in video disc is arranged between outer projection and the interior projection.Flange on the base of the breach of above-mentioned lobe frame also can have two outer projections in the outside, and there are two interior projections the inboard, and the groove on the base that can snap in video disc is arranged between outer projection and the interior projection.
Mechanical heart valve of the present invention has following characteristics: mechanical heart valve comprises a lobe frame and two or three video discs.Two or three and the corresponding breach in video disc position are arranged on the lobe frame.The position, base of each video disc relies on the base of breach of lobe frame and rolls.Two sides of each video disc are constrained in the slideway of breach both sides of lobe frame with the base of the breach of lobe frame and rotate up and down as supporting.Two of video disc sides are close to the slideway of lobe frame all the time in the process that video disc slides in the slideway of lobe frame.When video disc was closed, each video disc was combined to form convex vaulted mutually, seals channel of blood flow with the inner surface of lobe frame.As long as each video disc turns over less angle, video disc gets final product complete opening, thereby can reduce fully time of opening and closing to reduce regurgitation volume.When video disc was opened gradually, two sides of video disc were constrained in the slideway of breach both sides of lobe frame and upwards rotate, and video disc whole goes into stream interface and form the sub-thread channel of blood flow that increases gradually with the part inner surface of lobe frame.Video disc is filled out on the breach of lobe frame when the video disc complete opening, and video disc whole goes into stream interface and form maximum sub-thread channel of blood flow with the total inner surface of lobe frame.Like this, whole video disc all is positioned at the outside of sub-thread channel of blood flow when video disc is opened, thereby when flowing by mechanical heart valve, blood can reduce the interference that blood flow is subjected to significantly, the lobe pressure reduction that can reduce significantly to collapse, increase effective vent area and minimizing haemolysis and blood coagulation incidence rate.The base of the lobe frame of the mechanical heart valve that three video discs are housed of the present invention also can undulate, can match on the one hand with the anatomical shape of the aortic valvular ring of human body, also can reduce the setting height(from bottom) of mechanical heart valve on the other hand, be suitable for being implanted in aortic valve lobe position especially.The inner surface of lobe frame that the mechanical heart valve of two video discs is housed also can be ellipse garden shape, matches the suitable especially Bicuspid valve lobe position that is implanted in the anatomical shape of the mitral annulus of human body.
With mode for example, state most preferred embodiment of the present invention in conjunction with the accompanying drawings below, scope of the present invention will be pointed out in the claims.With reference to being described in detail of most preferred embodiment, understand with will be more readily apparent from reach the present invention above-mentioned with other the purpose and the practical ways of advantage.
Fig. 1 is the vertical view of the mechanical heart valve that three video discs are housed when video disc is closed of expression first embodiment of the invention;
Fig. 2 is the cutaway view of expression along the 1-1 line intercepting of Fig. 1:
Fig. 3 is the vertical view of mechanical heart valve when the video disc complete opening of presentation graphs 1;
Fig. 4 is the cutaway view of expression along the 2-2 line intercepting of Fig. 3;
Fig. 5 is the three-dimensional view of mechanical heart valve when the video disc complete opening of presentation graphs 1;
Fig. 6 is the cutaway view of lobe frame of the mechanical heart valve that three video discs are housed of the lobe frame undulate of expression second embodiment of the invention;
Fig. 7 is the vertical view of the mechanical heart valve that two video discs are housed when video disc is closed that the lobe frame of expression third embodiment of the invention is ellipse garden shape;
Fig. 8 is the cutaway view of expression along the 3-3 line intercepting of Fig. 7;
Fig. 9 is the vertical view of mechanical heart valve when the video disc complete opening of presentation graphs 7;
Figure 10 is the cutaway view of expression along the 4-4 line intercepting of Fig. 9.
Fig. 1 and Fig. 2 are the state of the mechanical heart valve that three video discs are housed 5 when three video disc 6-8 close of expression first embodiment of the invention, and Fig. 3-Fig. 5 is the state of expression when three video disc 6-8 complete openings.When video disc 6-8 opened, blood can flow by mechanical heart valve 5.When video disc 6-8 closed, video disc 6-8 stoped blood to flow by mechanical heart valve 5.The keying activity of video disc 6-8 in lobe frame 9 mainly by the blood pressure difference control of video disc 6-8 both sides, can be played the such physiological function of human heart valve.Mechanical heart valve 5 comprises that a ringwise lobe frame 9 and three are constrained on and makes to open and close the active pentagonal video disc 6-8 of curved surface that is approximately on the lobe frame 9.The base 10-12 of video disc 6-8 is straight shape approximately, and its side 13-18 is cambered outwards arc, and two of each video disc top margin 19-24 project into 120 ° angle and involutory mutually with other video disc on lobe frame 9 baseplanes when video disc 6-8 closes fully.On lobe frame 9, have and corresponding three the breach 25-27 in video disc 6-8 position.On the inner surface 28 of lobe frame 9, the recessed cambered way 38-43 that base 29-31 with breach 25-27 is arranged is the garden heart, be radius with top margin 19-24 and the side 13-18 intersection 32-37 of video disc 6-8.On the base 29-31 of the breach 25-27 on the lobe frame 9, have prevent video disc 6-8 base 10-12 entad or the flange 44-46 of the trough of belt of centrifugal swing.Piece 47-52 and end block 53-58 fend off respectively in two ends of the cambered way 38-43 of lobe frame 9.The base 10-12 of video disc 6-8 is stuck in the groove 59-61 among the flange 44-46 on the base 29-31 of breach 25-27 of lobe frame 9.When video disc 6-8 opens and closes, the base 10-12 of video disc 6-8 serves as that supporting is rolled with the groove 59-61 among the flange 44-46 on the base 29-31 of the breach 25-27 of lobe frame 9, cambered outwards side 13-18 of video disc 6-8 and intersection 32-37 then are close on the recessed cambered way 38-43 on the lobe frame 9 all the time, to keep video disc 6-8 to be constrained in the cambered way 38-43 of lobe frame 9 upwards or to rotate.Video disc 6-8 upwards rotates when video disc 6-8 opens gradually, and the whole stream interface 62-64 of going into of video disc 6-8 surrounds the sub-thread channel of blood flow 65 that increases gradually with the part inner surface 28 of lobe frame 9.When video disc 6-8 complete opening, intersection 32-37 on the video disc 6-8 is blocked by the piece 47-52 that fends off on the cambered way 38-43 of lobe frame 9, video disc 6-8 is filled out on the breach 25-27 of lobe frame 9, and video disc 6-8 whole goes into stream interface 62-64 and surrounds maximum sub-thread channel of blood flow 65 with the total inner surface 28 of lobe frame 9.Like this, when video disc 6-8 opens, whole video disc 6-8 is positioned at the outside of sub-thread channel of blood flow 65 all the time, thereby when flowing by mechanical heart valve 5, blood can reduce the interference that blood flow is subjected to significantly, the lobe pressure reduction that can reduce significantly to collapse, increase effective vent area and minimizing haemolysis and blood coagulation incidence rate.When video disc 6-8 closes, the intersection 32-37 of video disc 6-8 is blocked by the end block 53-58 on the cambered way 38-43 of lobe frame 9, side 13-18 is close on the lower edge 66-71 of recessed cambered way 38-43 of lobe frame 9, the top margin 19-24 of each video disc is combined to form convex vaulted mutually, its base 10-12 is stuck in the groove 59-61 among the flange 44-46 on the base 29-31 of breach 25-27 of lobe frame 9, thereby seals channel of blood flow 65.Because the top margin 19-24 of video disc is combined to form convex vaulted mutually when video disc 6-8 closes, the top margin 19-24 of video disc 6-8 becomes 30 ° angle with the mid point line of base 10-12 approximately with the baseplane of lobe frame 9, therefore the corner of each video disc 6-8 is about 50 ° when video disc 6-8 complete opening, and the complete opening angle of video disc 6-8 can reach about 80 °.
Fig. 6 is the cutaway view of lobe frame of the mechanical heart valve that three video discs are housed of expression second embodiment of the invention.Except the shape difference of lobe frame bottom, the structure of the mechanical heart valve of the structure of the mechanical heart valve of second embodiment and first embodiment is identical.Bottom 73 undulates of the lobe frame 72 among Fig. 6, the bottom 73 of each breach 74 below of lobe frame 72 are that the bottom 73 of the below between 75, two adjacent breach of crest is a trough 76.Lobe frame 72 corrugated bottoms 73 one side match with the anatomical shape of the aortic valvular ring of human body, and the height setting height(from bottom) in the time of can reducing the video disc unlatching on the other hand is suitable for being implanted in aortic valve lobe position especially.
Fig. 7 and Fig. 8 are the state of the mechanical heart valve that two video discs are housed 77 when two video discs 78 and 79 are closed that the lobe frame of expression third embodiment of the invention is ellipse garden shape, and Fig. 9 and Figure 10 are the state of expression when its two video discs 78 and 79 complete openings.Blood can flow by mechanical heart valve 77 when video disc 78 and 79 is opened.When video disc 78 and 79 was closed, video disc 78 and 79 stoped blood to flow by mechanical heart valve 77.The keying activity of video disc 78 and 79 in lobe frame 80 mainly by the blood pressure difference control of video disc 78 and 79 both sides, can be played the such physiological function of human heart valve.Mechanical heart valve 77 among the figure comprises that an inner surface is the lobe frame 80 of ellipse garden shape and two approximately and is constrained on and opens and closes the active video disc 78 and 79 that is curved surface half ellipse garden shape approximately on the lobe frame 80. Video disc 78 and 79 side 81-84 are cambered outwards arc, base 87 and 88 on its arc relative with top margin 85 and 86 is straight shape approximately, and to be the major axis with the ellipse garden of lobe frame 80 inner surfacies be boundary's involutory straightway mutually in the projection of its top margin 85 and 86 on lobe frame 80 baseplanes when video disc 78 and 79 is closed fully.On lobe frame 80, have and corresponding two breach 89 of video disc 78 and 79 positions and 90.Base 92 and 93 with breach 89 and 90 is arranged on the inner surface 91 of lobe frame 80 is the garden heart, be the recessed cambered way 98-101 of radius with the side 81-84 of video disc 78 and 79 and the intersection 94-97 of top margin 85 and 86.On the base 92 and 93 of the breach 89 of lobe frame 80 and 90, have prevent video disc 78 and 79 base 87 and 88 entad or the flange 102 and 103 of the trough of belt of centrifugal swing.On two ends of the cambered way 98-101 of lobe frame 80, piece 104-107 and end block 108-111 fend off respectively. Base 87 and 88 on the video disc 78 and 79 is stuck in the breach 89 and the groove 112 and 113 in the flange 102 and 103 on 90 the base 92 and 93 of lobe frame 80.When video disc 78 and 79 opens and closes, its base 87 and 88 serves as that supporting is rolled with the groove 112 and 113 in the flange 102 and 103 of the base 92 of the breach 89 of lobe frame 80 and 90 and 93 respectively, video disc 78 and 79 cambered outwards side 81-84 and intersection 94-97 are close on the recessed cambered way 98-101 of lobe frame 80 all the time, thereby interior work of cambered way 98-101 that keeps video disc 78 and 79 to be constrained on lobe frame 80 rotated up or down. Video disc 78 and 79 is done upwards to rotate when video disc 78 and 79 is opened gradually, video disc 78 and 79 wholely go into stream interface 114 and the 115 part inner surfacies 91 with lobe frame 80 surround the sub-thread channel of blood flow 116 that increases gradually.When video disc 78 and 79 complete openings, video disc 78 and 79 intersection 94-97 are blocked by the piece 104-107 that fends off on the cambered way 98-101 of lobe frame 80, video disc 78 and 79 is filled out on the breach 89 and 90 of lobe frame 80, this moment video disc 78 and 79 wholely go into stream interface 114 and 115 total inner surface 91 with lobe frame 80 surround maximum sub-thread channel of blood flow 116.Like this, when video disc 78 and 79 is opened, each video disc 78 and 79 is positioned at the outside of channel of blood flow 116 all the time, thereby when flowing by mechanical heart valve 77, blood can reduce the interference that blood flow is subjected to significantly, to reduce collapse lobe pressure reduction, increase effective vent area and minimizing haemolysis and blood coagulation incidence rate significantly.When video disc 78 and 79 is closed, video disc 78 and 79 intersection 94-97 are blocked by the end block 108-111 on the cambered way 98-101 of lobe frame 80, make its side 81-84 be close on the lower edge 117-120 of recessed cambered way 98-101 of lobe frame 80, it is convex vaulted that its top margin 85 and 86 major axis with the ellipse garden of lobe frame 80 inner surfacies 91 are that the boundary is combined to form mutually, its base 87 and 88 is stuck in the groove 112 and 113 in the flange 102 and 103 of breach 89 on the lobe frame 80 and 90 base 92 and 93, thereby seals channel of blood flow 116.Because top margin 85 and 86 mutual involutory backs form convex vaulted, when video disc 78 and 79 is closed, video disc 78 and 79 top margin 85 approximately become 30 ° angle with 88 mid point line with the baseplane of lobe frame 80 with base 87 with 86, therefore each video disc 78 and 79 corner are about 50 ° when video disc 78 and 79 complete openings, and the complete opening angle of video disc 6-8 can reach about 80 °.
So as can be seen, above the target stated, comprise by front those shown targets of explanation having been reached effectively.Described here only is the typical best form of implementation of the present patent application, can do some to said structure and change also without prejudice to the spirit and scope of the present invention.The detail that the present invention does not limit to or is restricted to here to be stated, and state in should qualification as claim to keep affiliated field secondary technology personnel be conspicuous any improvement or remodeling.
Claims (11)
1, a kind of mechanical heart valve, its ingredient comprises: ringwise lobe frame and two or three are constrained on and open and close active video disc on the above-mentioned lobe frame, blood can flow by mechanical heart valve when above-mentioned video disc is opened, video disc stops blood to flow by mechanical heart valve when above-mentioned video disc is closed, the keying activity of above-mentioned video disc in above-mentioned lobe frame mainly by the blood pressure difference control of video disc both sides, can be played the such physiological function of human heart valve;
Above-mentioned mechanical heart valve is characterised in that: the base of above-mentioned video disc is straight shape approximately, the projection on above-mentioned lobe frame baseplane when video disc is closed fully of its top margin is and the mutual involutory straightway of other video disc, its both sides are side, on above-mentioned lobe frame, have and above-mentioned video disc position corresponding two or three breach, it is the garden heart that base with above-mentioned breach is arranged on the inner surface of above-mentioned lobe frame, top margin and side intersection with above-mentioned video disc are the cambered way of radius, fend off respectively on two ends of the cambered way of above-mentioned lobe frame piece and end block, on the base of the breach of above-mentioned lobe frame, have prevent above-mentioned video disc the base entad or the flange of the trough of belt of centrifugal swing, the base of above-mentioned video disc is stuck in the groove in the above-mentioned flange on the base of breach of above-mentioned lobe frame, the base of video disc serves as that supporting is rolled with the groove in the flange on the base of the breach on the above-mentioned lobe frame respectively when above-mentioned video disc opens and closes, the side of above-mentioned video disc is close on the cambered way of above-mentioned lobe frame all the time and keeps video disc to be constrained in the cambered way of lobe frame upwards or rotate, video disc upwards rotates when above-mentioned video disc is opened gradually, above-mentioned video disc whole goes into stream interface and surrounds the sub-thread channel of blood flow that increases gradually with the part inner surface of above-mentioned lobe frame, the top margin and the side intersection of video disc are blocked by the piece of fending off on the cambered way of above-mentioned lobe frame when above-mentioned video disc complete opening, video disc is filled out on the breach of lobe frame, above-mentioned video disc whole goes into stream interface and surrounds maximum sub-thread channel of blood flow with the total inner surface of above-mentioned lobe frame, each video disc is positioned at the outside of sub-thread channel of blood flow all the time when above-mentioned video disc is opened, the top margin of video disc and side intersection are blocked by the end block of the cambered way of above-mentioned lobe frame when above-mentioned video disc is closed, the side of above-mentioned video disc is close on the lower edge of cambered way of above-mentioned lobe frame, the top margin of video disc is combined to form convex vaulted mutually, the base of above-mentioned video disc is stuck in the groove in the flange on base of breach of above-mentioned lobe frame, thereby seals channel of blood flow.
2, mechanical heart valve according to claim 1, it is characterized in that, above-mentioned mechanical heart valve is constrained on by a ringwise above-mentioned lobe frame and three and opens and closes the active pentagonal above-mentioned video disc of curved surface that is approximately on the lobe frame and form, on above-mentioned lobe frame, have and corresponding three breach in above-mentioned video disc position, above-mentioned video disc has two top margins, and two top margins of video disc project into 120 ° angle on above-mentioned lobe frame baseplane when above-mentioned video disc is closed fully.
3, mechanical heart valve according to claim 2, the bottom undulate that it is characterized in that above-mentioned lobe frame, the bottom of each breach below of above-mentioned lobe frame is a crest, the bottom of the below between two adjacent breach of above-mentioned lobe frame is a trough, and the anatomical shape of the aortic valvular ring of corrugated bottom of above-mentioned lobe frame and human body matches.
4, mechanical heart valve according to claim 1, it is characterized in that, above-mentioned mechanical heart valve is the above-mentioned lobe frame of ellipse garden shape and two approximately by an inner surface and is constrained on and opens and closes the active above-mentioned video disc that is curved surface half ellipse garden shape approximately on the lobe frame and form, on above-mentioned lobe frame, have and corresponding two breach in above-mentioned video disc position, the top margin of above-mentioned reef sheet promptly is the string limit of above-mentioned half ellipse garden shape, and to be the major axis with the ellipse garden of lobe frame be boundary's involutory straightway mutually in the projection of the top margin of video disc on above-mentioned lobe frame baseplane when above-mentioned video disc is closed fully.
5, mechanical heart valve according to claim 1, it is characterized in that, above-mentioned mechanical heart valve is the above-mentioned lobe frame of garden shape and two approximately by an inner surface and is constrained on and opens and closes the active above-mentioned video disc that is curved surface half garden shape approximately on the lobe frame and form, on above-mentioned lobe frame, have and corresponding two breach in above-mentioned video disc position, the top margin of above-mentioned video disc promptly is the diameter of above-mentioned half garden shape, and to be the diameter with the lobe frame be boundary's involutory straightway mutually in the projection of the top margin of video disc on above-mentioned lobe frame baseplane when above-mentioned video disc is closed fully.
6, mechanical heart valve according to claim 1, it is characterized in that, the side of above-mentioned video disc is cambered outwards arc, the cambered way of above-mentioned lobe frame correspondingly is recessed arc, the cambered outwards side of above-mentioned video disc can be close on the recessed cambered way of above-mentioned lobe frame, to keep video disc to be constrained in the cambered way of lobe frame upwards or to rotate.
7, mechanical heart valve according to claim 1, it is characterized in that, the side of above-mentioned video disc is the arc that concaves, the cambered way of above-mentioned lobe frame correspondingly is the arc of protrusion, the side that above-mentioned video disc is concaved can be close on the cambered way of protrusion of above-mentioned lobe frame, to keep video disc to be constrained in the cambered way of lobe frame upwards or to rotate.
8, mechanical heart valve according to claim 1, it is characterized in that, the projection of the side of above-mentioned video disc on lobe frame baseplane be shape approximately linearly, the bottom of the cambered way indent of above-mentioned lobe frame correspondingly is planar shaped approximately, the side of above-mentioned video disc can be close on the bottom of planar shaped of cambered way of above-mentioned lobe frame, to keep above-mentioned video disc to be constrained in the cambered way of above-mentioned lobe frame upwards or to rotate.
9, mechanical heart valve according to claim 1 is characterized in that, there is an outer projection in the outside of the flange on the base of the breach of above-mentioned lobe frame, and there are two interior projections the inboard, and the groove on the base that can snap in above-mentioned video disc is arranged between above-mentioned outer projection and the interior projection.
10, mechanical heart valve according to claim 1 is characterized in that, there are two outer projections in the outside of the flange on the base of the breach of above-mentioned lobe frame, and there are two interior projections the inboard, and the groove on the base that can snap in above-mentioned video disc is arranged between above-mentioned outer projection and the interior projection.
11, mechanical heart valve according to claim 1, it is characterized in that the top margin of above-mentioned video disc when above-mentioned video disc is closed and the mid point line on base become 30 ° of angles approximately with above-mentioned lobe frame baseplane, the corner of each video disc is about 50 ° when above-mentioned video disc complete opening, and promptly the complete opening angle of each video disc is about 80 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95111779 CN1146326A (en) | 1995-09-25 | 1995-09-25 | Mechanical heart valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95111779 CN1146326A (en) | 1995-09-25 | 1995-09-25 | Mechanical heart valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1146326A true CN1146326A (en) | 1997-04-02 |
Family
ID=5079026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95111779 Pending CN1146326A (en) | 1995-09-25 | 1995-09-25 | Mechanical heart valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1146326A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101184453B (en) * | 2005-04-21 | 2012-07-04 | 爱德华兹生命科学股份公司 | A blood flow controlling apparatus |
| CN101426452B (en) * | 2006-02-27 | 2013-05-29 | 奥尔特克斯公司 | Methods and devices for delivery of prosthetic heart valves and other prosthetics |
-
1995
- 1995-09-25 CN CN 95111779 patent/CN1146326A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101184453B (en) * | 2005-04-21 | 2012-07-04 | 爱德华兹生命科学股份公司 | A blood flow controlling apparatus |
| CN101426452B (en) * | 2006-02-27 | 2013-05-29 | 奥尔特克斯公司 | Methods and devices for delivery of prosthetic heart valves and other prosthetics |
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