JPH057621A - Hand pump device for extracorporeal circulation - Google Patents

Abstract

PURPOSE:To allow the varying of the capacity of the pump of the hand pump device for extracorporeal circulation which sucks and feeds liquid by compressing an elastic bag. CONSTITUTION:A liquid suction port 13 is formed at one end of the elastic bag 11 which is made of an elastic material and is internally formed with a liquid accumulation chamber 12. A liquid feed port 14 is formed at the other end. One way valves 16, 17 are mounted to the liquid suction port 13 and the liquid feed port 14 to constitute the device in such a manner that the liquid is sucked from the liquid suction port side into the chamber 12 of the bag and is fed from the liquid feed port side to the outside. A volume varying body 32 constituted of a hermetic bag is housed in the accumulation chamber 12 of the bag. The inside of the varying body 31 and the outside of the bag 11 are airtightly connected by a capillary 35. Air, etc., are introduced through the capillary 35 into the hermetic chamber 32 of the varying body 31 to inflate the varying body and to vary the volume of the varying body. The amt. of the air, etc., to be introduced into the chamber 32 is regulated to increase or decrease the volume of the liquid to be housed in the accumulation chamber 12, by which the suction and discharge rate of the liquid per time of the bag is adjusted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manual pump device used by incorporating it into an extracorporeal blood circulation device, and more specifically,
For example, a manual pump device that is used by incorporating it into an extracorporeal blood circulation device when resuscitating a cardiac arrest patient by a venous / arterial bypass method, and more specifically, connecting a human vein and an artery outside the body to circulate blood externally. The present invention relates to a manual pump device for extracorporeal circulation, which is interposed in a blood extracorporeal bypass circuit to inhale venous blood and deliver it to the arterial side.

[0002]

2. Description of the Related Art Conventionally, chest compression patients are generally used for resuscitation of cardiac arrest patients. There is no doubt about the effectiveness and importance of the cardiac massage method, but this resuscitation method has an uncertain blood supply to the brain, so that recovery of cerebral blood flow is poor even if the heart beat is restarted. Brain death or becoming a plant human was by no means uncommon. Therefore, effective recirculation of blood is an essential requirement for resuscitation of cardiac arrest patients, especially for brain resuscitation. For that purpose, extracorporeal circulation of blood is effective, and it has been proved in many cases. This extracorporeal circulation method (venous / arterial bypass method) forms a bypass circuit that connects veins and arteries outside the body to circulate blood extracorporeally, remove carbon dioxide from venous blood, and add oxygen (gas exchange). The device is equipped with an oxygenator for gas exchange of blood and a pump device for circulating blood.

By the way, as a pump device used in a conventional extracorporeal circulation device, for example, a roller system as shown in FIG. 13 is generally adopted. As shown in the figure, this device has a plurality of rollers 2 arranged in a cylindrical wall surface 1 so as to rotate along the wall surface 1, and each roller 2 is squeezed by the roller 2 while squeezing the infusion tube 3.
Is rotated so that blood is sequentially fed in a predetermined direction as indicated by an arrow in the figure. According to this conventional pump device, blood can be circulated.

However, the above-mentioned conventional pump device has the following problems. That is, one of them is that the tube is crushed by the roller, so that the tissue in the blood may be destroyed. The other one is a motor drive, so there is no electric wiring (outdoors or inside a vehicle).
Can not be used in. Furthermore, the other one is heavy because it has a built-in motor, which is inconvenient to carry.

Therefore, the inventors of the present application, in order to solve the above-mentioned problems of the conventional pump device, Japanese Patent Application No. 2-5524.
Prior to the present invention, a manual pump device (hereinafter referred to as prior art) described in No. 2 specification and drawings was developed (however, it has not been disclosed). This prior art is an elastic bag pressurizing type liquid suction / delivery pump, in which a liquid suction port is formed at one end and a liquid transmission port is formed at the other end of an elastic bag whose inside is formed in a liquid storage chamber. A one-way piece that allows liquid to flow only into the storage chamber is attached to the liquid suction port side, and a one-way valve that allows liquid to flow only from the storage chamber to the outside is attached to the liquid feed port side. The elastic bag is configured to be repeatedly pressed by hand to suck blood from the liquid suction port into the accumulation chamber and supply the blood from the liquid feeding port. According to this prior art, it is possible to solve the problems of the above-described conventional pump device.

[0006]

However, the above-mentioned prior art also has room for improvement in the following aspects. In other words, the venous / arterial bypass method is a method of circulating blood outside the body, that is, venous blood once flowing out of the body and sending to the arterial side for circulation. It is preferable that the amount of the inhalation of the pump, in particular, the inhalation amount of the pump is differentiated according to the weight of the patient, the adult, the child, etc. Especially in the case of children and infants, there is a risk of adverse effects if the amount of inhalation of each pump is not carefully adjusted and applied. However, in the pump device of the prior art, since the volume of the elastic bag is constant,
There was a problem that the amount of blood inhaled and discharged could not be changed.

The present invention has been made in view of the above circumstances, and solves the problems of the above-described conventional pump device, and allows manual pump device for extracorporeal circulation which can change the amount of blood suction and discharge. It is intended to provide.

[0008]

In order to achieve the above object, a manual pump device for extracorporeal circulation according to the present invention includes an elastic bag pressurizing type liquid suction / delivery pump and a variable capacity pump for varying the capacity of the pump. And a means, wherein the pump is made of an elastic material, has an interior formed in a liquid storage chamber, and has a liquid suction port at one end of the storage chamber and a liquid delivery port at the other end, and an elastic bag. A restoring means for self-restoring (expanding) the bag, a one-way valve provided on the liquid suction port side and allowing liquid to flow only into the accumulation chamber, and a one-way valve provided on the liquid delivery port side, It comprises a one-way valve that allows fluid to flow only from the accumulation chamber to the outside.
The volume variable body is made of a soft material, the inside of which is formed into a closed chamber, and the volume variable body is housed and arranged in the accumulation chamber, and a connecting passage for airtightly connecting the closed chamber of the volume variable body and the outside of the accumulation chamber. It is characterized in that the volume of the variable volume body is varied by introducing air or liquid into the closed chamber through the connection passage.

[0009]

With the manual pump device for extracorporeal circulation configured as described above, when the elastic bag is pressed, the valve on the liquid inlet side of the bag closes and the valve on the liquid inlet side opens, so that the liquid in the storage chamber is not pumped. It is delivered (discharged) from the liquid port and supplied to a predetermined portion. When the bag is released from compression, the bag self-expands (at this time, the valve on the liquid delivery side of the bag closes and the valve on the suction side of the bag opens), causing a vacuum (negative pressure) state in the accumulation chamber. , The amount of liquid corresponding to the delivered amount is sucked into the chamber through the liquid suction port. Therefore, liquid (blood) can be circulated in a predetermined direction by repeatedly pressing the bag. On the other hand, when air or liquid is introduced into the closed chamber of the variable volume body from the connection passage, the variable volume body expands and the volume increases, and when the air or liquid is discharged from the closed chamber, the variable volume body contracts. Volume is reduced. Since the volume of the accumulating chamber of the bag is constant, the liquid receiving volume of the accumulating chamber is changed by changing the volume of the variable volume body as described above. Therefore, by changing the volume of the variable body, the suction / discharge amount of the liquid per one time of the pump changes.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
2 will be described. 1 is a vertical sectional side view of a manual pump device for extracorporeal circulation according to this embodiment, FIG. 2 is a vertical sectional side view of a one-way valve of the same device, FIG. 3 is a vertical sectional side view of a volume variable body of the same device, and FIG. Similarly, its plan view and FIG. 5 are longitudinal side views showing the expanded state of the variable volume body.

1 to 5, the manual pump device of this embodiment includes a liquid suction / delivery pump A of an elastic bag pressurizing type and a capacity varying means B for varying the capacity of the pump A. Made of

The pump A has an inside formed in a liquid storage chamber 12 having an appropriate volume, an elastic bag 11 having a liquid suction port 13 at one end and a liquid supply port 14 at the other end, and the bag. Restoration means 15 for self-restoring (expanding) 11; one-way valve 16 attached to the liquid suction port 13 side;
And a one-way valve 17 mounted on the side.

The elastic bag 11 is made of silicone rubber,
It is made of urethane rubber, vinyl, or other elastic resin material, and is formed into a size that allows an average person to hold it by hand and press it almost entirely. And a liquid feed port is formed at the other end. In this case, the elastic bag 11 has the spherical body 18
Is formed into a cylindrical shape having an appropriate diameter, and both ends of this cylindrical shape are conically narrowed so that the liquid suction port 13 is formed at one end and the liquid supply port 14 is formed at the other end. May be.

The volume of the storage chamber 12 of the bag 11 is for adults,
It is set appropriately by distinguishing it for children etc. (smaller for children compared to adults), for example, for children,
About 40 cc is suitable. However, the size of this volume may be changed.

The liquid suction port 13 and the liquid feed port 14 are formed so as to communicate with the chamber 12, respectively. In this embodiment, short pipes 19, 19 for connection are provided at both ends of an elliptic spherical body 18,
One short pipe 19 forms the liquid suction port 13, and the other short pipe 19 forms the liquid supply port 14.

As the restoring means 15 for self-restoring the bag 11, in this embodiment, an annular elastic repulsive collar-like body 20 directed in the circumferential direction is projected on the substantially central outer peripheral wall surface of the spherical body 18 to form a spherical shape. The elastic force of the body 18 itself and the brim 20
Adopts a structure that self-expands and restores due to the synergistic effect of the elastic force of. In this case, the restoring means of the bag 11 does not have the collar-shaped body 20 as in the embodiment, and the bag 1
1 may be formed to have a thick wall to give a strong elastic force, and the bag may be self-restored only by the elastic force of the bag.

The one-way valves 16 and 17 are valves (check valves) for allowing liquid (blood) to flow in one direction and preventing backflow. In this embodiment, both valves 16 and 17 are provided. As shown in detail in FIG. 2, the joint mouth pipes 24 and 25 communicating with the chamber 23 are symmetrical on the central axis of the housing member 22 in which the ball containing chamber 23 for containing the ball 21 is formed. The liquid inlet / outlet port 26, 2
7 are formed to face each other, and one entrance 27 of the accommodation chamber 23
A plurality of engaging protrusions 28 for engaging the ball 21 near the
It is made by projecting. As a result, the ball 21 engages with the projection piece 28 and is always opened at the inlet / outlet 27, so that the liquid flows freely from the mouth tube 24 toward the mouth tube 25, but as shown in FIG. As shown by the phantom line, the inlet / outlet port 26 is closed by the ball 21 and is therefore configured to prevent backflow. The one-way valves 16 and 17 are not limited to the structure of the embodiment, and a ball valve system other than the embodiment, a system using a membrane valve, or any other structure can be freely selected. In short, the object can be achieved if the liquid is made to flow only in one direction and the backflow is prevented. In this embodiment, the short pipe 19 on the liquid suction port 13 side of the bag 11 is connected to the mouth pipe 25 of the one-way valve 16 and the short pipe 19 on the liquid supply port 14 side.
Is connected to the mouth pipe 24 of the one-way valve 17 to connect both valves 16 and 17 to the bag 11. in this case,
Both valves 16 and 17 may be integrated with the bag 11.

In the pump A constructed as described above, when the elastic bag 11 is pressed, the valve 16 on the liquid suction port 13 side is closed,
Since the valve 17 on the liquid delivery port 14 side is opened, the liquid in the storage chamber 12 is delivered from the liquid delivery port. Further, when the compression of the bag 11 is released, the bag 11 self-expands (at this time, the valve 17 is closed and the valve 16 is opened), and the inside of the accumulation chamber 12 is in a vacuum (negative pressure) state. An amount of liquid corresponding to the amount is sucked into the chamber 12 through the liquid suction port 13. Therefore, by repeatedly pressing the bag 11, the liquid (blood) is circulated in a predetermined direction.

The volume changing means B for changing the volume of the pump A has a variable volume body 31 formed inside a closed chamber 32 and housed in the storage chamber 12 of the bag 11, and the variable volume body 31. It comprises a connecting passage 33 for airtightly connecting the closed chamber 32 of 31 and the outside of the storage chamber 12.

The variable volume body 31 is constructed so as to change the volume by introducing air or liquid into the closed chamber 32 through the passage 33. The variable volume body 31 of this embodiment is formed of a flat and flat airtight bag 34 made of a soft silicone resin, vinyl resin or the like and having an appropriate size (see FIG. 3), and inside (sealed chamber 32). By introducing air or liquid into the bag 34, the bag 34 swells to increase its volume (see FIG. 5),
By discharging air or the like from the bag, the bag returns to a flattened shape and its volume is reduced. The size of the bag 34 is appropriately determined in accordance with the size of the volume of the storage chamber 12 of the bag 11, and when the volume of the storage chamber 12 is, for example, about 100 cc, the volume of the bag 34 at the time of maximum expansion. Is, for example, about 60 cc. As a result, the variable body 3 is changed depending on the amount of air or the like introduced into the closed chamber 32 of the variable body 31.
Since the volume of 1 changes, the accommodating (accepting) volume of the liquid in the storage chamber 12 also changes accordingly. Therefore, by adjusting the amount of air or liquid introduced into the bag, the capacity of the pump A, that is, the amount of liquid suction / delivery (discharge amount) per unit of the bag 11 is set in the range of about 100 cc to about 40 cc. You can change it freely.

As described above, the volume variable body 3 of this embodiment is used.
1 is composed of a flat-flat airtight bag 34, the volume variable body 31 is not limited to the structure of this embodiment,
For example, a thing like a rubber balloon may be adopted. Further, when introducing the liquid into the closed chamber 32 of the variable volume body 31, it is preferable to employ a chemical solution such as sterilized heparinized physiological saline solution.

The connecting passage 33 is formed so as to introduce air or the like into the closed chamber 32 through the passage 33. The passage 33 of this embodiment is a thin tube made of soft silicone resin or vinyl resin. It is composed of 35. Further, one end of the thin tube 35 communicates with the closed chamber 32 and is airtightly fixed to the bag 34, and the other end of the thin tube 35 is kept airtight from the bag 11 and protrudes to the outside. Also, air, etc.
It is introduced from the pipe 35 into the bag 34 by using a syringe 41 or the like. In this embodiment, a projecting tip of the thin tube 35 is attached with an insertion pipe 36 into which a tip 43 of a cylinder 42 of the syringe 41 is fitted. The tip of the tube 42 is fitted into the mouth tube 36 so that the air and the like in the tube 42 is introduced into the bag 34 and is discharged from the bag. In FIG. 1, 37 is a cap that closes the mouth tube 36 tightly, and the cap 37 is composed of an inner plug 38 that is fitted into the mouth tube 36 and an outer lid 39 that is capped on the mouth tube 36. It is attached to the mouth tube 36 by a flexible attachment 40 of length. Further, 44 is a piston rod of the syringe 41, 4
Reference numeral 5 indicates a scale marked on the outer wall surface of the cylinder 42.

The manual pump device for extracorporeal circulation of the present embodiment is constructed as described above, and one example of its usage and operation will be described with reference to FIG. FIG. 6 shows a state in which the device of this embodiment is incorporated in a blood extracorporeal circulation resuscitation device and is being used. In the figure, 50 is an artificial lung,
The artificial lung 50 is connected to the lung 5 via the connecting pipe 51 and the connector 52.
The blood inlet 53 of 0 is connected to the valve 17 on the side of the liquid supply port 14 of the bag 11.
It is connected with. Reference numeral 54 is a blood supply line connecting the artery of the patient 55 and the blood outlet 56 of the artificial lung 50. The line 54 is formed by connecting a blood supply catheter 57 and a blood supply tube 58 with a connector 62. Outlet 5 of artificial lung 50
It is connected to 6. 59 is the vein and bag 11 of patient 55
Is a blood removal line connecting the liquid suction port 13 of the blood vessel, and the line 59 is formed by connecting a blood removal catheter 60 and a blood removal tube 61 with a connector 62, and the proximal end of the tube 61 is in one direction on the liquid suction side of the bag 11. It is connected to the mouth tube 24 of the valve 16. 63 is an oxygen cylinder, and the cylinder 63 is connected to the gas inlet 64 of the artificial lung 50. As a result, oxygen gas is pressed into the oxygenator 50 through the inlet 64 to exchange blood gas, and the gas outlet 65
It is designed to exhaust from. The ideal gas for exchanging blood with an artificial lung is 100% oxygen,
It may be air. When air is used, a foot-type bellows (not shown) is used instead of the cylinder 63 for the artificial lung 50.
Connected to the gas inlet 64 of the device or an inhaler (not shown)
Should be connected to the gas outlet 65. If no bellows or inhalation device is available, connect an appropriate tube to the gas outlet 65 of the oxygenator 50, and the resuscitation person will inhale the tube by mouth to ventilate the oxygenator 50 with air. May be.

Then, the distal ends of the blood removal catheter 60 and the blood supply catheter 57 are inserted into the femoral vein and femoral artery of the patient 55 by a puncture method or the like to form an extracorporeal blood bypass circuit between the vein and the artery. Although the air in the bypass circuit has been removed by a conventional method, the description of the removal method is omitted. When adjusting the capacity of the pump A, the tip 43 of the syringe 41 is attached to the volume variable body 31 in parallel with the above work.
The mouth tube 36 is fitted into the chamber 32 of the bag 34 according to the scale 45 of the syringe 41, and the mouth tube 36 is hermetically closed with the cap 37. Therefore, by repeatedly squeezing the bag 11 with the hand in the above state to circulate the venous blood extracorporeally and exchange the gas with the artificial lung, the oxygenated blood is returned to the artery, and this effective blood is collected. It can be sent to the brain, heart, and other organs.

FIG. 7 is a side view showing a main portion of another embodiment of the manual pump device for extracorporeal circulation according to the present invention, a part of which is shown in cross section. For simplification of description, the same components as those of the embodiment of FIG. 1 are designated by the same reference numerals, and detailed description thereof will be omitted.

In this embodiment, an opening / closing cock 70 is attached to the tip end side of the thin tube 35 of the connecting passage 33 connected to the volume changing body 31 of the capacity changing means B, and the passage 70 is opened / closed by this cock 70. Is. The opening / closing cock 70
Includes a sleeve 71, a plug 72 that is rotatably and densely inserted into the sleeve 71, and has a valve passage 73 formed in a diametrical direction.
A nozzle 74, which is formed so as to correspond to the valve passage 73 and protrudes from one side of the outer peripheral wall surface of the sleeve 71 so as to be fitted into the needle base 47 of the injection needle 46, and a sleeve 74 of the sleeve 71 which corresponds to the valve passage 73. A connection port pipe 75 projecting on the other side of the outer peripheral wall surface (the side opposite to the nozzle 74) and formed to fit the tip end 43 of the cylinder 42 of the syringe 41 described above, and an operation piece 76 formed on the upper end of the stopper 72. By operating the operation piece 76 to rotate the plug 72, the nozzle 74 and the connection port tube 75 are connected and disconnected. Then, the tip of the injection needle 46 is inserted into the protruding tip of the thin tube 35 to connect the needle 46 and the thin tube 35, the nozzle 74 is fitted into the needle base 47 of the needle 46, and the cock 70 is connected to the needle base 47. .. The other structure is exactly the same as the embodiment of FIG.

This embodiment is constructed as described above, the tip of the injector 41 is fitted into the connection port tube 75, air or liquid is introduced into the bag of the variable volume body 31, and the stopper 72 is rotated to rotate the cock. 7
It closes 0. According to this embodiment, the insertion tube 3 is provided at the tip of the thin tube 35 as in the embodiment of FIG.
Since the labor to attach 6 can be omitted, the manufacturing is simplified,
Moreover, the opening / closing operation of the passage 33 can be easily performed.
As in the embodiment of FIG. 1, the manual pump device of this embodiment is also equipped with one-way valves on both short pipes 19 and 19 of the elastic bag 11 and used as explained in FIG.

FIG. 8 is a side view showing a main part of still another embodiment of the device of the present invention, with a part cut away. In this embodiment, the connection passage 33 connected to the volume variable body 31 is used.
A monitoring body 80 is provided inside, and the expansion / contraction state of the closed bag 34 can be monitored from the outside. The monitoring body 80 is formed of a flat, flat and transparent airtight bag 81 made of a soft silicone resin, vinyl resin or the like and having an appropriate size, and the bag 81 is inflated by introducing air or liquid into the inside 82. Is configured. The bag 81 is provided for the purpose of expanding and contracting in synchronization with the closed bag 34 in the bag 11 and monitoring this from the outside. Therefore, the size of the bag 81 depends on whether the bag 81 is inflated or not. It may be formed in a size that allows easy confirmation, and it is not preferable to form it too large. And the bag 8
No. 1 is outside the bag 11, and one side 83 of the bag 81 is airtightly fixed to the projecting end of the thin tube 35 of the connecting passage 33 by communicating with the inside 82, and the other side 84 of the bag 81 is attached to the thin tube 35a.
One end of is connected to the inside 82 and is airtightly fixed. As a result, the thin tubes 35 and 35 a are communicated with each other inside the bag 81.

At the other end of the thin tube 35a, that is, at the free end, an opening / closing cock 70 as shown in FIG.
Or through the inlet pipe 36 as shown in FIG.
Install. Other configurations and the like are exactly the same as those of the above-mentioned embodiment.

This embodiment is constructed as described above,
When air or liquid is introduced into the bag 34 of the variable volume body 31, the bag 81 of the monitoring body 80 also expands in synchronization with the bag 34. Therefore, when configured as in this example,
Whether or not the bag 34 in the bag 11 is inflated can be externally monitored.

FIG. 9 is a plan view showing a main part of still another embodiment of the device of the present invention, with a part cut away. In this embodiment, a one-touch type on-off valve 90 is provided in the monitoring body 80 as described in the embodiment of FIG.
The monitoring body 80 is formed of a closed bag 81 configured similarly to the monitoring body 80 of FIG. 8, and one side 83 of the bag 81 is connected to the projecting end portion of the thin tube 35 of the connecting passage 33 to communicate with the inside of the bag 81 and is airtight. It is stuck to. Further, the valve body 91 is provided on the other side 84 of the monitoring body 80.
And an on-off valve 90 having a housing 92 for accommodating the valve body 91.

The housing 92 of the on-off valve 90 has a front cylinder portion 93 and a rear cylinder portion 94 made of plastics or the like. The front tubular portion 93 has a smaller diameter than the rear tubular portion 94, and these are connected continuously via an annular valve seat portion 95. The caliber of the front cylinder portion 93 is formed to a size into which the tip end 43 of the cylinder 42 of the syringe is fitted. At the rear end of the rear tubular portion 94, a conical portion 96 conically narrowed is continuously provided, and a hole 97 is provided at the center of the conical portion 96.
Has been established. Further, on the inner wall surface of the rear tubular portion 94, an arbitrary number of uneven strips 98 oriented in the longitudinal direction are formed.

The valve body 91 of the on-off valve is made of an elastic material such as synthetic rubber, and has an elastic expansion / contraction body 101 that elastically expands / contracts in the longitudinal direction, and an annular shoulder portion 10 at the tip of the expansion / contraction body 101.
It has a pusher body 103 which is continuously provided via 2. The expandable / contractible body 101 has a diameter smaller than the inner diameter of the rear tubular portion 94, and a length corresponding to the length of the cylindrical chamber of the rear tubular portion 94, that is, the length from the valve seat portion 95 to the rear end of the rear tubular portion 94. Is formed. In addition, a hole 104 is formed in the central portion of the elastic body 101 from the rear end toward the front end to improve the elastic expansion and contraction effect, and the outer wall surface of the elastic body 101 can be oriented in the longitudinal direction. A large number of ridges 105 are formed. The pusher body 103 has a diameter smaller than the inner diameter of the front cylinder portion 93 and is formed to have a length of about half of the front cylinder portion 93, and a notch groove 106 directed in the diametrical direction is formed at the tip. There is. The valve body 91 is housed in the housing 92 with the telescopic body 101 housed in the rear cylinder portion 94 and the pusher body 103 protruding into the front cylinder portion 93. Thereby, the elastic body 101
The shoulder portion 102 is in airtight contact with the valve seat portion 95 of the housing. Therefore, the front cylinder portion 93 and the rear cylinder portion 94 are airtightly closed at all times. Further, when the pusher body 103 is pushed, the telescopic body 101 contracts in the axial direction, and the shoulder portion 102
Is separated from the valve seat portion 95, the front cylinder portion 93 and the rear cylinder portion 9 are separated from each other.
4 communicates with each other, allowing air and the like to freely flow from the front cylinder portion 93 to the hole 97.

The on-off valve 90 is constructed as described above, and the rear cylinder portion 94 of the housing 92 is housed in the closed bag 81 of the monitoring body 80, and the front cylinder portion 93 is projected to the outside from the other side 84 of the bag 81. The other side 84 is airtightly fixed to the front cylinder 93. Other configurations and the like are exactly the same as those of the above-described embodiment.

This embodiment is constructed as described above, and the tip 43 of the barrel 42 of the syringe 41 is inserted into the front barrel 93 to push the pusher 103, and in that state, air or liquid is injected by the syringe. Then, air and the like are recessed groove 106, a gap between the inner wall surface of front cylinder part 93 and the pusher, a gap between valve seat part 95 and shoulder part 102,
The volume variable body 3 enters the inside 82 of the bag 81 through the hole 97 and the gap between the rear tubular portion 94 and the elastic body 101, and the thin tube 35.
1 is introduced into the sealed bag 34. Then, when the tip of the syringe is pulled out from the front cylinder portion 93, the elastic body 101 is self-recovered by the elastic force, and the shoulder portion 102 shoulders the valve seat portion 95 airtightly and closes the portion. Therefore, when configured as in this embodiment, the operation of injecting and discharging air and the like can be easily performed, and the bag 34 of the variable volume body 31 can be used as in the embodiment of FIG.
There is an advantage that it can be monitored from the outside whether or not the bulge.

In the above embodiment, the connecting passage 33
Although three methods of opening / closing means have been disclosed, the opening / closing means is not limited to the embodiment, and for example, a rubber having flexibility and adhesiveness to an appropriate portion of the bag 11 such as a known rubber ball. A ridge having an appropriate diameter and length made of a material is fixed, the ridge is surrounded by a bag 34, and the bag 34 is airtightly fixed to the inner wall surface of the bag 11. Injecting an injection needle into the bag, injecting air or the like into the bag 34, and then withdrawing the needle to self-close the needle hole of the ridge, or arbitrarily adopting another structure Can be done.

FIG. 10 is a front view showing still another embodiment of the device of the present invention, FIG. 11 is a rear view of the same, and FIG. 12 is a side view of the same. The manual pump device of the present embodiment manually presses an elastic bag pressurizing type liquid suction / feed pump A, a capacity varying means B for varying the capacity of the pump A, and the elastic bag 11 of the pump A. It is composed of a pressurizer C. Since the pump A and the capacity varying means B are configured in the same manner as in the above-mentioned respective embodiments, the same reference numerals are given and detailed description thereof will be omitted.

The pressurizer C is a spherical body 18 of the bag 11.
(However, in the case where the spherical body 18 is formed in a cylindrical shape, the cylindrical body is sandwiched.)
The pressurizer main body 110 is formed by hingedly connecting 11, 112 with a hinge 113 so as to be openable and closable. Both pressure plates 111, 11
Reference numeral 2 is made of aluminum alloy, plastics, or the like, and is formed in a size capable of sandwiching and compressing the spherical body 18 of the bag 11 as a whole.

An elongated hole-shaped collar engaging hole 114 for engaging the collar-shaped body 20 of the bag 11 is formed in substantially the central portions of the pressure plates 111 and 112. As a result, the bag is stably sandwiched between the two pressure plates to prevent the bag from moving during the pressing operation of the bag. Also,
Engagement guide rods 116 are attached to both sides of the upper pressure plate 111 with attachment pieces 115 facing downward.
The two guide rods 116 are each formed of two rods 117 so as to engage with each other with the short tube 19 of the bag 11 sandwiched therebetween. As a result, the bag 11 is stably placed at a fixed position during the opening / closing operation of the pressure plates 111 and 112. In this way, the bag 11 is stably locked at a fixed position by the synergistic effect of the engagement of the collar engaging holes 114 of both pressure plates and the collar-shaped body 20 and the engagement of the guide rod 116 and the short tube 19. Both pressure plates are opened and closed in the closed state. If desired, a spring having an appropriate spring pressure may be interposed between the pressure plates 111 and 112, and a restoring force may be applied to the pressure plates 111 and 112 in the opening direction by the spring action of the springs. good. Further, at the center of the upper surface of the pressure plate 111 and the center of the lower surface of the pressure plate 112, the operation levers 118, 1 of appropriate length are provided.
19 are fixed and attached with screws 120 or the like, and these are provided for pressing the bag 11 (closing both pressure plates) by grasping both rods 118 and 119 with a hand.

The apparatus of this embodiment is constructed as described above, and is used as explained in FIG. 6 in the same manner as the above-mentioned embodiment.
Since the bag 11 is pressed and pressed by 1,112, the pressing operation of the bag can be performed smoothly and easily. Therefore, there is an advantage that fatigue of the pump operator can be reduced.

[0041]

Since the manual pump device for extracorporeal circulation according to the present invention is constructed as described above, the present invention has the following effects.

Since the blood is pushed out by the pressing force of the bag, the problem of destroying the blood tissue of the conventional roller type pump device is solved.

Since the pump device can be formed light in weight, it is convenient to carry, and since it is a manual type, it can be used even in a place where there is no electric wiring.

By introducing air or the like into the closed chamber of the variable volume body to increase or decrease the volume of the variable volume body, it is possible to change the inhalation / discharge amount of blood per one time of the pump.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing an embodiment of a manual pump device for extracorporeal circulation according to the present invention.

FIG. 2 is a vertical sectional side view of a one-way valve of the same device.

FIG. 3 is a vertical sectional side view of a variable volume body of the same apparatus.

FIG. 4 is a plan view of a variable volume body of the same apparatus.

FIG. 5 is a vertical cross-sectional side view of the variable volume body of the above device,
It shows a state where the closed bag is inflated.

FIG. 6 is an explanatory view showing a state in which the device of the present invention is incorporated into a blood extracorporeal circulation resuscitation device for use.

FIG. 7 is a side view showing another embodiment of the device of the present invention,
A part is cut away and shown.

FIG. 8 is a plan view showing an embodiment in which a monitoring body is provided in the connection passage of the capacity varying means of the device of the present invention, with a part cut away.

FIG. 9 is a plan view showing an embodiment in which a monitoring body is connected to the connection passage of the capacity varying means of the device of the present invention, and a one-touch type on-off valve is provided in the monitoring body, a part of which is cut away. It is a thing.

FIG. 10 is a front view showing still another embodiment of the manual pump device according to the present invention.

FIG. 11 is a rear view of the same apparatus.

FIG. 12 is a side view of the same apparatus.

FIG. 13 is a front view showing a schematic configuration of a conventional manual pump device for extracorporeal circulation.

[Explanation of symbols]

 A elastic bag pressurizing type liquid suction / delivery pump B capacity varying means 11 elastic bag 12 liquid accumulating chamber 13 liquid suction port 14 liquid feeding port 15 restoring means 16,17 one-way valve 31 volume variable body 32 closed chamber 33 connecting passage

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Hidenori Terasaki 2-9-11 Obiyama, Kumamoto-shi, Kumamoto (72) Inventor Goro Sugiyama 3-30-1 Hongo, Bunkyo-ku, Tokyo

Claims (1)

Claim: What is claimed is: 1. An elastic bag pressurizing type liquid suction / delivery pump, and a capacity varying means for varying the capacity of the pump. The pump is made of an elastic material. An elastic bag having an inside formed as a liquid storage chamber, a liquid suction port at one end of the storage chamber, and a liquid supply port at the other end, a restoring means for self-restoring (expanding) the bag, and the liquid suction port. On the side,
A one-way valve that allows the flow of liquid only into the accumulation chamber,
And a one-way valve that is interposed on the liquid delivery port side and that allows liquid to flow only from the accumulation chamber to the outside,
The capacity varying means is made of a soft material, the inside of which is formed into a closed chamber, and the volume variable body accommodated and arranged in the accumulation chamber, and the sealed chamber of the volume variable body and the outside of the accumulation chamber are hermetically sealed. A manual pump device for extracorporeal circulation, comprising a connecting passage for connecting, wherein air or liquid is introduced into the closed chamber through the connecting passage to change the volume of the variable volume body. ..