DE1566581B1

DE1566581B1 - Circulation device for supplying blood to a patient

Info

Publication number: DE1566581B1
Application number: DE19671566581
Authority: DE
Inventors: Anthony C Mamo
Original assignee: Borg Warner Corp
Current assignee: Borg Warner Corp
Priority date: 1967-02-17
Filing date: 1967-12-18
Publication date: 1970-09-24
Also published as: GB1187080A; US3407748A; SE322600B; NL6800338A

Description

1 21 2

Die Erfindung geht aus von einer Umwälzeinrich- des Blutes in den verschiedenen Kammern verschie-The invention is based on a circulating device of the blood in the various chambers.

tung für das Zuführen von Blut zu einem Patienten. den sind, unddevice for delivering blood to a patient. are, and

Es ist eine Vorrichtung zum Anreichern von Fig. 5 einen Aufriß der Abtastvorrichtung mitThere is an augmentation device of Fig. 5 having an elevation of the scanning device

Sauerstoff bekannt, welche in den Blutkreislauf eines Einzelheiten.Oxygen is known to be present in the bloodstream of a particular.

Patienten einschaltbar ist. Die Sauerstoff anreicherung 5 Die in den Fig. 1, 2, 3 und 4 dargestellte Einerfolgt dabei in einem von venösem Blut durchström- richtung enthält eine obere Kammer 7 mit einer ten, vertikal stehenden Rohr. Insgesamt besteht die Einfüllöffnung 8, die durch einen Verschluß 9 ver-Sauerstoffanreicherungsvorrichtung aus diesem Rohr schließbar ist, sowie eine mittlere Kammer 10 und und einem das Rohr konzentrisch umgebenden weite- eine untere Kammer U. Die Kammern sind über ren Rohr, welches länger ist als das innere Rohr und io Einwegventile 12 und 13 miteinander verbunden, in welches das aus der oberen Öffnung des inneren durch welche die obere Kammer 7 mit der mittleren Rohres ausströmende Blut einfließen kann. Das Kammer 10 bzw. die mittlere Kammer 10 mit der übergeflossene Blut strömt zwischen äußerem und unteren Kammer 11 wahlweise verbindbar sind. Diese innerem Rohr dann abwärts durch zwei Filter. Im beiden Einwegventile sind vorzugsweise vom Gummiunteren Bereich der zwischen den beiden Rohren 15 klappentyp. Das untere Ende der unteren Kammer U gebildeten ringförmigen Kammer- sammelt sich das ist an eine Blutzuführleitung 14 angeschlossen, die zu Blut dann und fließt durch eine Abflußleitung ab. dem Patienten führt und mit einem einstellbaren Das Blut durchfließt mithin auf einer gewissen Länge Drosselventil IS versehen ist. Die obere Kammer 7 die doppelrohrförmige Mischvorrichtung, verläßt sie ist an eine Blutrückleitung 16 angeschlossen, die dazu jedoch ohne irgendeine eventuell sogar steuerbare 20 dient, Blut von dem Patienten zurück in diese Kam-Speicherung. mer zu leiten, welche während einer bestimmtenPatient can be switched on. Oxygen Enrichment 5 The one illustrated in Figures 1, 2, 3 and 4 follows an upper chamber 7 with a th, vertically standing pipe. Overall, there is the filling opening 8, the oxygen enrichment device provided by a closure 9 can be closed from this tube, as well as a middle chamber 10 and a wider, concentrically surrounding the tube, a lower chamber U. The chambers are above ren tube, which is longer than the inner tube and io one-way valves 12 and 13 connected to each other, in which the from the upper opening of the inner through which the upper chamber 7 with the middle Rohres escaping blood can flow into it. The chamber 10 or the middle chamber 10 with the Overflowing blood flows between the outer and lower chambers 11, which can be optionally connected. These inner tube then down through two filters. Both one-way valves are preferably from the rubber bottom Area of the flap type between the two tubes 15. The lower end of the lower chamber U formed annular chamber collects that is connected to a blood supply line 14, which leads to Blood then and drains through a drain line. leads to the patient and with an adjustable The blood therefore flows through a certain length throttle valve IS is provided. The upper chamber 7 the double-tube-shaped mixing device, it leaves is connected to a blood return line 16, which for this purpose however, without any possibly even controllable 20 serving, blood from the patient is returned to this Kam store. mer to direct which during a given

Es ist Aufgabe der Erfindung, eine Blutumwälz- Phase des Arbeitsvorganges dazu dient, dieses rückvorrichtung zu schaffen, welche eine portionsweise geleitete Blut zu speichern, wie noch im einzelnen Zwischenspeicherung des umgewälzten Blutes beschrieben werden soll. Es wird darauf hingewiesen, ermöglicht. 25 daß die Leitung 16 und die Einwegventile 12 und 13It is the object of the invention to provide a blood circulation phase of the operation to reverse this device to create which one to store a portion-wise directed blood, how still in detail Intermediate storage of the circulated blood is to be described. It should be noted that enables. 25 that the line 16 and the one-way valves 12 and 13

Bei einer Umwälzeinrichtung der einleitend an- weit in die entsprechenden Kammern hineinragen, geführten Ausbildung wird diese Aufgabe erfindungs- um eine Schaumbildung und eine Hämolyse zu vergemäß gelöst durch eine Anordnung von drei Kam- hindern.In the case of a circulation device which initially protrudes far into the corresponding chambers, Guided training, this task is inventively to correct foam formation and hemolysis solved by an arrangement of three obstacles.

mern, die in senkrechter Richtung angeordnet sind, Eine in den Fig. 1 bis 4 nur schematisch darbestehend aus einer oberen Kammer, einer mittleren 30 gestellte Flüssigkeitsstandanzeigevorrichtung 17 ist an Kammer und einer unteren Kammer, einer Einfüll- einer Halterung oder einem Aufbauteil 18 (F i g. 5) Öffnung in der oberen Kammer, durch die Blut in der Einrichtung befestigt und ist über eine Leitung 19 diese einfüllbar ist, ein Einwegventil, durch das wahl- für Blut mit der unteren Kammer 11 verbunden, weise eine Verbindung zwischen der oberen Kammer Die Flüssigkeitsstandanzeigevorrichtung 17 ist in und der mittleren Kammer herstellbar ist, ein Ein- 35 Einzelheiten in Fig. 5 dargestellt. Sie besitzt ein wegventil, durch das wahlweise eine Verbindung Gehäuse 20 mit einer Einlaßöffnung 21 und einen zwischen der mittleren Kammer und der unteren Deckel 22 mit einer darin befindlichen Einlaßöffnung Kammer herstellbar ist, eine mit der unteren Kam- 23, mit welcher die Leitung 19 verbunden ist. Innermer verbundene Leitung, durch die Blut zu einem halb des Gehäuses 20 ist eine Membran 24 angeord-Patienten zuführbar ist, eine mit der oberen Kammer 40 net und mit einem ringförmigen Teil 25 versehen, an verbundene Leitung, durch die Blut von dem Patien- welchem eine nach unten ragende Stange 26 befestigt ten rückführbar ist, ein Richtungssteuerventil und ist, die wiederum in einer Bohrung 27 im unteren eine Quelle von unter Druck stehendem Gas, die Ende des Gehäuses verschiebbar gelagert ist. vermittels des Richtungssteuerventils wahlweise mit Zwei im Handel erhältliche Trigger- oder Auslöseder mittleren Kammer verbindbar ist und die untere 45 ventile 28 und 29 sind an der Halterung 18 befestigt Kammer kontinuierlich mit unter Druck stehendem und stehen mit der Stange 26 der Flüssigkeitsstand-Gas beschickt. anzeigevorrichtung 17 über einen Hebelarm 30 inmern which are arranged in the vertical direction, one in Figs. 1 to 4 only schematically existing from an upper chamber, a middle 30 provided liquid level indicator 17 is on Chamber and a lower chamber, a filling, a holder or a mounting part 18 (Fig. 5) Opening in the upper chamber through which blood is attached to the device and is via a conduit 19 this can be filled, a one-way valve through which optionally connected for blood with the lower chamber 11, wise a connection between the upper chamber The liquid level indicator 17 is in and the middle chamber can be produced, details shown in FIG. She owns one Wegventil, through which optionally a connection housing 20 with an inlet port 21 and a between the middle chamber and the lower lid 22 with an inlet opening therein Chamber can be produced, one with the lower chamber 23, to which the line 19 is connected. Innermer connected line through which blood to a half of the housing 20 is a membrane 24 angeord-patient can be fed, one with the upper chamber 40 net and provided with an annular part 25, on connected conduit through which blood from the patient is attached to which a downwardly extending rod 26 is attached th is traceable, a directional control valve and is, in turn, in a bore 27 in the lower a source of pressurized gas slidably supported at the end of the housing. by means of the directional control valve, optionally with two commercially available trigger or release springs middle chamber is connectable and the lower 45 valves 28 and 29 are attached to the bracket 18 Chamber continuously with pressurized and standing with the rod 26 of the liquid level gas loaded. display device 17 via a lever arm 30 in

Auf diese Weise läßt sich das Blut gut portions- Verbindung, der in der Nähe des einen Endes anIn this way the blood can be well portioned connection near one end

weise zwischenspeichern und kann außer dem vom einem zwischen den beiden Auslöseventilen 28 undwise cache and can also from the one between the two release valves 28 and

Patienten zurückgeführten Blut ohne irgendwelche 50 29 an der Halterung 18 befestigten Drehzapfen 31Patient returned blood without any 50 29 pivots 31 attached to bracket 18

zusätzliche Umschaltungen Blut aus Blutkonserven drehbar gelagert ist. Das andere Ende des Hebelarmsadditional switchovers blood from blood reserves is rotatably mounted. The other end of the lever arm

zugegeben werden. 30 befindet sich zwischen der Stange 26 und einerbe admitted. 30 is located between the rod 26 and a

Wenn nach einer vorteilhaften Ausgestaltung der Einstellvorrichtung 32 für den Flüssigkeitsstand, dieIf, according to an advantageous embodiment of the adjustment device 32 for the liquid level, the

Erfindung die Ventile tief in die jeweils darunter- ebenfalls an der Halterung 18 befestigt ist. DieseInvention, the valves deep into each of which is also attached to the bracket 18 underneath. These

liegende Kammer hineingezogen sind, dann werden 55 Einstellvorrichtung 32 besteht aus einem Körper 33,lying chamber are pulled into it, then 55 adjusting device 32 consists of a body 33,

Schaumbildung und Hämolyse noch sicherer unter- durch den in einem Gewinde eine EinstellschraubeFoaming and hemolysis are even safer thanks to an adjusting screw in a thread

bunden. 34 hindurchgeführt ist. Am oberen Ende der Einstell-bound. 34 is passed through. At the top of the setting

Der neuartige Aufbau und die Anordnung von schraube 34 befindet sich eine Platte 35. ZwischenThe novel structure and arrangement of screw 34 is a plate 35. Between

Geräten und Vorrichtungen einer Umwälzeinrichtung der Platte 35 und dem anderen Ende des HebelarmsDevices and devices of a circulating device of the plate 35 and the other end of the lever arm

nach der Erfindung wird im folgenden an Hand eines 60 30 ist eine unter Druck stehende Schraubenfeder 36According to the invention, a pressurized helical spring 36 is described below with reference to a 60 30

bevorzugten Ausführungsbeispiels in Verbindung mit angeordnet,preferred embodiment in connection with arranged,

den Zeichnungen beschrieben. Es zeigt Ein Richtungssteuerventil 37 steht mit der mitt-the drawings. It shows a directional control valve 37 is connected to the middle

F i g. 1 eine schematische Darstellung einer Ein- leren Kammer 10 und den Auslöseventilen 28 und 29F i g. 1 shows a schematic representation of a single chamber 10 and the release valves 28 and 29

richtung nach der Erfindung, in welcher die Abtast- in Verbindung und besteht aus einem Gehäuse 38, indirection according to the invention, in which the scanning in connection and consists of a housing 38 in

einrichtung für die Betätigung des Richtungssteuer- 65 welchem ein Schieberventil 39 verschiebbar gelagertdevice for the actuation of the direction control 65 which a slide valve 39 is slidably mounted

ventils nur in Blockform dargestellt ist, ist. Der Schieber besitzt einen ersten, zweiten undvalve is only shown in block form. The slide has a first, second and

F i g. 2, 3 und 4 ähnliche Darstellungen zu F i g. 1, dritten Steg 40, 41 bzw. 42, die jeweils mit der ersten,F i g. 2, 3 and 4 representations similar to FIG. 1, third web 40, 41 or 42, each with the first,

die sich nur darin unterscheiden, daß die Pegelstände zweiten, dritten und vierten Ein- bzw. Auslaßöffnungwhich only differ in that the water levels are second, third and fourth inlet and outlet openings

Claims

3 43 4

43, 44, 45, 46 and a vent 47 to this by means of gravity through the one-way

work together. The slide valve 39 is also valve 12 through to the central chamber 10

arrives with a control button 48 for actuation. The fluid level of the blood in the

hand fitted. Chambers at this point in the process

A pressurized gas container 49 has 5 is indicated in FIG.

a shut-off valve 50, a first gas line 51 and at the same time the reaches the lower chamber 11 a reducing valve 52, which with a gas pressure prevailing pressure via the second gas line 54, regulator 53 connected. A second, third, the pressure of which is the same as that in the lower chamber fourth and fifth gas lines 54, 55, 56 and 57, respectively, connect 11, also to the membrane 24 within the liquid the gas pressure regulator 53 with the inlet port io keitsstandanzeigeinrichtung 17. The weight of the in 21 of the liquid level indicator 17, the blood in the chamber 11 is larger third opening 45 of the control valve 37, a gas as the resistance of the adjustment device 32 for the knife 58 or with the release valves 28 and 29 liquid level, so that the lever arm 30 to the A sixth gas line 59 with a pivot pin 31 located therein is moved downwards and borrowed start valve 60 connects the gas meter 58 with 15 actuates the release valve 29 and the ninth Gasdem upper end of the lower chamber 11. Seventh, pressurized line 63 that connects to the fourth eighth and ninth gas lines 61, 62 and 63 connecting opening 46 of the directional control valve 37 are connected the openings 43, 44 and 46 with the release is, so that on the third web 42, a pressure valve 28, the middle chamber 10 or with the practiced and the original position of the directional release valve 29. 20 control valve 37 is retained. It's about to

Generally speaking, the reducing valve 52 will note that the opposite side of the

initially used to apply a certain pressure web 42, a pressure is exerted by the

for the gas flowing to the gas pressure regulator 53 third gas line 55 is supplied so that the

set, which in turn to regulate the pressures in the directional control valve 37 is balanced

Gas pressure is used. The gas meter 58 is used for loading and this is in its original position

Adjustment of the amount of gas allowed through and allowed to remain. When the blood level is in

Therefore, the gas pressure regulator 53 drops precisely to the lower chamber 11 to a level which

place. The adjustable throttle valve 15 is used to correspond approximately to the status shown in Fig. 3,

regulate the amount of blood flowing to the patient. the force of the compression spring 36 is greater than the

It is common in blood pumping systems to oxygenate the blood in the chamber, reducing the weight of the blood

dispensing device to be provided, and it should therefore be noted 11, so that the lever arm 30 is on its pivot

be that in one of the chambers an oxygen 31 is pressed up against the release valve 28

dispenser can be arranged without the is and this is actuated, whereby the connection

Operation of the device affected by it between the fifth gas line 57 and the ninth

will. 35 gas line 63 interrupted and a connection

The following briefly describes the mode of operation between the fifth gas line 57 and the seventh the device according to the invention received gas line 61 is produced. So that gets under will. Fig. 1 shows the initial phase of the pressurized gas on the side of the first land Commissioning of the blood circulation device after 40 of the directional control valve 37, which the invention. In particular, the starting valve 60 is open- 40 ventilation opening 47 closes and a connection net, so that the air can escape when through between the third gas line 55 and the eighth the filling opening 8 is filled by hand with blood, gas line 62 produces, whereby the middle Kambis this is set the mer 10 shown in the lower chamber 11 under the same pressure as that Fluid level has reached. Then the starting lower chamber 11, so that the one-way valve 12 valve 60 closed again. The closure 9 serves 45 the middle chamber 10 closes and the disposable to to close the filling opening 8 in order to open the valve 13 of the lower chamber 11. That is To prevent the ingress of impurities, due to the fact that the upper chamber 7 however, a small vent is left open. is under atmospheric pressure while the

The directional control valve 37 is located in a pressure in the middle chamber 10 and in the

such a setting that it is the same size in the 5 ° lower chamber 11 in the drawing. In this phase

illustrated manner, each connection between the operation of the upper chamber 7 serves as

middle chamber 10 and the pressurized storage for the blood coming from the patient,

the gas container 49 blocks, but the eighth gas as long as the one-way valve 12 is closed.

line to the vent opening 47 opens, whereby If the fluid level of the blood in the

the middle chamber towards the open atmosphere has 55 reached a certain height from the upper chamber 7,

is ventilated. as shown, for example, in FIG. 4 is shown

This takes place by hand through the filling opening 8, the same process as was already filled in the Verbing Blood passes through the one-way valves 12 and 13 as described in Figure 2, followed by through and arrives at the lower chamber 11. 3 described before

After the filling is finished, the outlet becomes 60, after which the operation is again that in the

check valve 50 opened so that the lower chamber 11 F i g. 3 and 4 shown corresponds, and this

over the first, fourth and sixth gas line 51, 56 process continuously in the order mentioned

or 59 is pressurized, whereby this is repeated.

Valve 13 in the in F i g. 2 way shown includes claims
and blood from lower chamber 11 through 65

Blood supply line 14 is directed to the patient 1. Circulation device for the supply of

and blood coming from the patient via the blood to a patient

Blood return line 16 into the upper chamber 7 and from through an arrangement of three chambers, the

are arranged in the vertical direction, consisting from an upper chamber (7), a middle chamber (10) and a lower chamber (11), a filling opening (8) in the upper chamber, through which blood can be filled into this One-way valve (12) through which a connection between the upper chamber and the middle chamber can be produced, a one-way valve (13), through which a connection can be made can be produced between the middle chamber and the lower chamber, one with the lower one Chamber (11) connected line (14) through which blood can be supplied to a patient, one with line (16) connected to the upper chamber (7) through which blood can be returned from the patient, a directional control valve (37) and a source (49) of pressurized gas communicating by means of of the directional control valve is optionally connectable to the middle chamber and the lower one Chamber (11) is continuously charged with pressurized gas.

2. Circulating device according to claim 1, characterized by a liquid level indicator (17) associated with the lower chamber

(11) is connected to a membrane (24) in this display device, which reacts to the pressure in the lower chamber is responsive, one attached to this membrane and facing downwards Rod (26), one between the rod and a device for adjusting the liquid level (32) located lever arm (30) which is pivotably mounted near one end and valves (28, 29) can operate.

3. Circulation device according to claim 1 or 2, characterized by an adjustable throttle valve (15) in the blood supply line (14).

4. Circulating device according to claim 1, 2 or 3, characterized by a start valve (60).

5. Circulation device according to any of the Claims 1 to 4, characterized by a gas pressure regulator (53) and a gas meter (58).

6. circulation device according to claim 5, characterized by a reducing valve (52).

7. circulation device according to claim 1, characterized in that the one-way valves (12,13) are drawn deep into the chamber below.

1 sheet of drawings