JPH08215305A - Blood circulating route appliance for artificial dialysis apparatus - Google Patents

Abstract

PURPOSE: To enable the dialysis patient himself to interrupt an artificial dialysis and to rapidly make a refuge action in the event of emergency, to allow the restart of the artificial dialysis by using blood circulating route implements again, to realize the reutilization of the blood circulating route implements and to minimize the loss of the blood in the event of the interruption of the artificial dialysis in the prior art by constituting the blood circulating route implements in such a manner that the artificial dialysis is easily interrupted without cutting the blood circulating route implements. CONSTITUTION: Connectors 4 are mounted in midway of the venous blood circulating route implement 2 and the arterial blood circulating route implement 3, respectively. Each connector 4 is composed of a hollow cylindrical connector 4a formed to a projecting shape and a hollow cylindrical connector 4b formed to a recessed shape. The projecting part 4 of the hollow cylindrical connector 4a formed to the projecting shape and the recessed part 4d of the hollow cylindrical connector 4b formed to the recessed shape are freely attachably and detachably fitted and connected. The venous blood circulating route implement 2 and the arterial blood circulating route implement 3 are respectively provided with clamps 5 which are means for blocking blood circulation near both sides of the connectors 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blood circulation device for an artificial dialysis apparatus used when a patient with renal failure who needs artificial dialysis regularly performs artificial dialysis.

[0002]

2. Description of the Related Art The condition of renal failure is such that metabolites that should be excreted outside the body accumulate in the blood, making it impossible to regulate body fluids.
It causes uremia and artificial dialysis is performed to avoid it. There are several types of dialysis,
Recently, the artificial kidney method has become mainstream. Artificial dialysis is an exchange of substances on both sides of a membrane through one membrane.One side is dialysate and the other side is blood.The concentration difference between the substances contained in both sides causes toxins and water in body fluids. Is to remove. Conventionally, artificial dialysis is usually performed by puncturing the arteries and veins of the arm with needles attached to the tips of the arterial and venous blood circulation path materials connected to the main body of the artificial dialysis machine, respectively. And dialysate are brought into contact with each other through a small-pore membrane to remove unnecessary substances outside the body. Artificial dialysis machines are mainly installed in hospitals, and patients go to the hospital about twice a week for treatment. If an emergency such as a fire or an earthquake occurs during this artificial dialysis, the staff such as nurses go to the bedside of the patient who is undergoing dialysis, and the blood circulation path material is circulated to the arterial side. The patient is allowed to escape after the two sites on the vein side are clamped with forceps and the space between the two sites is cut with scissors or the like.

[0003]

When the patient escapes in the prior art, it is easy to rush to the patient undergoing dialysis based on the calm judgment of the staff while the hospital is noisy due to fire, earthquake, etc. Not only that, but even after coming to the patient, the work of cutting the path of the blood circulation path material described above, together with the content of the work itself, is poor in workability due to the emergency situation, and it takes a considerable time to escape from the patient. There is a problem that requires. In addition to the above-mentioned problems in an emergency, there is also a problem that even in a normal dialysis state, for example, a stool during artificial dialysis, it must be used after going through the background of the above-mentioned conventional technique. Further, the once cut blood circulation path material cannot be reused, and the once cut blood circulation path material is discarded, but at this time, the blood remaining in the blood circulation path material is also discarded. The amount of this waste blood is about 200 ml, which is a serious problem in recent years when a lack of blood for transfusion is being called for. In view of the above problems of the prior art, the present invention makes it possible to easily interrupt artificial dialysis without cutting the blood circulation path material, and in an emergency, the dialysis patient himself interrupts artificial dialysis and evacuates. The operation can be performed quickly, and the artificial dialysis can be restarted by using the blood circulation path material again, the blood circulation path material can be reused, and the loss of blood at the time of interruption of the artificial dialysis in the prior art. It is an object of the present invention to provide a blood circulation path device capable of minimizing the number of blood circulation paths.

[0004]

Therefore, according to the present invention, in an artificial dialyzer constituted by an artificial dialyzer main body and a blood circulation path, an arterial blood circulation path and a venous blood circulation path are provided in the middle of each path. A detachable connecting body that divides the path is provided, and blocking devices that prevent blood circulation are attached upstream and downstream of the connecting body.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a blood circulation path tool in an artificial dialysis device according to the present invention. FIG. 2 is a front view showing a usage state of the obstruction tool. FIG. 3 is a schematic diagram of artificial dialysis showing the state of artificial dialysis. FIG. 4 is a perspective view showing another embodiment of the connected body.

As shown in FIG. 1, the artificial dialyzer main body 1 is provided with an injection needle 6 at the other end via a connector 7, and venous blood formed by a hollow cylindrical flexible translucent tube. The circulation path material 2 and the arterial blood circulation path material 3 are connected. A connecting body 4 is attached in the middle of each of the venous blood circulation path material 2 and the arterial blood circulation path material 3. The connecting body 4 is composed of a convex hollow cylindrical connector 4a and a concave hollow cylindrical connector 4b, and the convex portion 4c of the convex hollow cylindrical connector 4a and the concave portion 4d of the concave hollow cylindrical connector 4b are detachably fitted and connected. It In this figure, the arterial blood circulation path material 3 is in a connected state, and the venous blood circulation path material 2 is in a disconnected state. Clamps 5 as blood circulation blockers are provided on both the venous blood circulation path member 2 and the arterial blood circulation path member 3 near both sides of the connecting body 4. The clamp 5 is flexible and, as shown in FIG. 2, is composed of an upper pressing portion 5a, a lower pressing portion 5b, and a lock portion 5c. The clamp 5 attached to the arterial blood circulation path material 3 in FIGS. 2A and 1 shows a normal state. In this state, blood circulation is possible inside the blood circulation path materials 2 and 3. is there. In addition, FIG.
The clamp 5 attached to the venous blood circulation path member 2 in FIG. 1 shows a state in which the upper pressing portion 5a and the lower pressing portion 5b are pressed against each other, and the upper pressing portion 5a is fixed by the lock portion 5c. In this state, blood circulation inside each of the blood circulation path members 2, 3 is blocked.

Next, the operation of the blood circulation device in the artificial dialysis apparatus will be described. As shown in FIG. 3, the person to be dialyzed is laid on the bed, and the needle 6 attached to the tip of the material 3 for arterial blood circulation path and the material 2 for venous blood circulation path shown in FIG. Artificial dialysis is performed. At that time, the arterial blood circulation path material 3, the venous blood circulation path material 2 and the needle 6 are attached to the arm 1 at appropriate positions with tape or the like.
Fixed to 1. In this state, the convex hollow cylindrical connector 4a and the concave hollow cylindrical connector 4b of the arterial-side coupling body 4 are fitted and coupled, and in this embodiment, the coupling body 4 is located at a distance of about 20 cm from the needle 6. It is located. Further, the convex hollow cylindrical connector 4a and the concave hollow cylindrical connector 4b of the vein side connector 4 are also fitted and connected. In this embodiment, the connector 4 is located at a distance of about 36 cm from the needle 6. ing. Both distances are such that the convex hollow cylindrical connector 4a and the concave hollow cylindrical connector 4b of the connector 4 can be easily attached and detached by the other hand of the person to be dialyzed. During artificial dialysis, as shown in FIG. 2 (a), the clamp 5 which is a blood circulation blocker has the upper pressing portion 5a and the lower pressing portion 5b separated from each other, and thus the arterial blood circulation path member 3 and the venous blood circulation member. The flow of blood inside the route material 2 is not blocked. In case of an emergency such as a fire or an earthquake during artificial dialysis, the person to be artificially dialyzed first presses the upper pressing portion 5a and the lower pressing portion 5a of the clamp 5 on the artery side and the vein side, respectively, as shown in FIG. 2 (b). The portion 5b is pressed against each other, and the upper pressing portion 5a is fixed by the lock portion 5c. This blocks the flow of blood inside the arterial blood circulation path material 3 and the venous blood circulation path material 2. Next, the fitting between the convex hollow cylindrical connector 4a and the concave hollow cylindrical connector 4b of the arterial-side and vein-side connecting bodies 4 is released, and the convex hollow cylindrical connector 4a and the concave hollow cylindrical connector 4 are removed.
b is separated. These series of operations can be easily and quickly performed by one hand of the person to be dialyzed. In addition, in these series of operations, there is almost no loss or loss of transfused blood. After that, the artificial dialyzer evacuates to the evacuation site with the needle 6 pierced into the artery and vein, and with the arterial blood circulation path material 3 and the venous blood circulation path material 2 separated from each other fixed to the arm. However, when performing the artificial dialysis again after the emergency has subsided, first, the connected body 4 on each of the arterial side and the venous side
The convex hollow cylindrical connector 4a and the concave hollow cylindrical connector 4b are fitted and connected. Next, the fixation between the upper pressing portion 5a and the lower pressing portion 5b of each clamp 5 on the artery side and the vein side is released by removing the lock portion 5c. This makes it possible to perform artificial dialysis again.

Next, another embodiment of the connecting body 4 will be described. As shown in FIG. 4, at the base of the convex portion 4c, a circulation path material connector 4h having a protrusion 4i on its outer periphery is integrally provided with the convex portion 4c. Also, in the convex portion 4c,
The pocket nut 4j is slidably inserted. An inner screw 4g is threaded on the inside of the bag nut 4j.
On the outer peripheral portion of the tip of the concave connector 4b, there is provided a protrusion 4f that can be screwed into the inner screw 4g of the inside of the pocket nut 4j. Further, a protrusion 4e is provided on the outer peripheral portion of the base of the concave connector 4b. In connection and disconnection of the connector 4, first, the protrusion 4c and the recess 4d of the concave connector 4b are fitted and connected. Next, after sliding the pocket nut 4j to the projection 4f of the concave connector 4b, the pocket nut 4j is screwed in to screw the inner screw 4g of the pocket nut 4j and the projection 4f. This ensures that the connection is secure and cannot be broken during dialysis. When the coupling body 4 is separated, the screw nut 4j is rotated in the direction opposite to the screwing direction to unscrew the inner screw 4g of the screw nut 4j and the protrusion 4f, and then the convex portion 4c and the concave portion 4d of the concave connector 4b are separated. The fitting connection is released, and the convex portion 4c and the concave portion 4d are separated from each other. In the connection and separation of the series of connected bodies 4, the circulation path material connector 4h
The projections 4i provided on the outer periphery of the concave connector 4b and the projections 4e provided on the outer peripheral portion of the concave connector 4b serve as a non-slip part of the hand for performing the attaching / detaching operation, and the attaching / detaching operation can be easily performed.

In this embodiment, the blocking member is made of the pressing type clamp 5, but the blocking member is not limited to this and may be a valve or the like.

[0010]

As described above, according to the present invention, in the artificial dialysis device constituted by the artificial dialysis device main body and the blood circulation route, a route is provided in the middle of each of the arterial blood circulation route and the venous blood circulation route. Since a detachable detachable connector is provided, and blocking devices for blocking blood circulation are respectively installed upstream and downstream of the connector, artificial dialysis can be easily performed without cutting the blood circulation path material. It becomes possible to interrupt the dialysis, and in an emergency, the dialysis patient himself can interrupt the artificial dialysis and quickly perform the evacuation operation, and can restart the artificial dialysis by using the blood circulation path material again. It has an excellent effect that the material for circulation route can be reused and the blood loss at the time of interruption of artificial dialysis in the prior art can be minimized.

[Brief description of drawings]

FIG. 1 is a perspective view of a blood circulation path tool in an artificial dialyzer according to the present invention.

FIG. 2 is a front view showing a usage state of a blocking tool.

FIG. 3 is a schematic diagram of artificial dialysis showing a state of artificial dialysis.

FIG. 4 is a perspective view showing another embodiment of the connected body.

[Explanation of symbols]

 1 Artificial Dialysis Device Main Body 2 Venous Blood Circulation Pathway Material 3 Arterial Blood Circulation Pathway Material 4 Connection 4a Convex Connector 4b Concave Connector 4c Convex 4d Recess 5 Clamp 5a Upper Pressing Part 5b Lower Pressing Part 5c Locking Part

Claims (3)

[Claims] 1. An artificial dialysis device comprising an artificial dialysis device main body and a blood circulation route, wherein a detachable connector for dividing the artery side blood circulation route and the venous side blood circulation route is provided. A blood circulation path tool in an artificial dialysis device, which is provided with blocking tools for blocking blood circulation upstream and downstream of the connected body. 2. The blood circulation path tool in the artificial dialysis device according to claim 1, wherein the connecting body is a fitting connection of the concave portion and the convex portion. 3. The blood circulation path device in the artificial dialysis device according to claim 1, wherein the blocking device is a pressing type clamp.