JP2003320024A - Extracorporeal blood treatment pre-connecting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an extracorporeal blood treatment pre-connecting system capable of preventing a twist of a connection tube for connecting members of the extracorporeal blood treatment pre-connecting system and eliminating the twist of the connection tube to be kept in the sterilized state, for example, in the sterilized and packaged state. <P>SOLUTION: In the extracorporeal blood treatment pre-connecting system, a member with a function of preventing the twist of the connection tube is disposed in the tube part for connecting component members of the extracorporeal blood treatment pre-connecting system. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION A so-called extracorporeal blood treatment system for guiding blood of a patient to the outside of the body, performing some processing on the blood, for example, blood purification, oxygenation or the like and returning the blood to the patient again is known. It was first put to practical use in hemodialysis, and is currently applied to heart-lung machines, artificial livers, and plasma separators. The present invention relates to a preconnecting system for an extracorporeal blood treatment system as described above. The preconnecting system of the extracorporeal blood treatment system referred to in the present invention is a component in which the extracorporeal blood treatment system is connected in advance, and these are sterilized and packaged. It is also possible that some of the above are selected and pre-connected, and these are sterilized and packed.

[0002]

2. Description of the Related Art An extracorporeal blood processing system, for example, a heart-lung machine system, is composed of a part of an artificial heart (pump) that pumps blood, an artificial lung that removes carbon dioxide gas from blood by adding oxygen to the blood, and peripheral devices thereof. For example, the circuit includes members such as a blood reservoir, a bubble eliminator, a heat exchanger, a blood filter, a blood removal cannula, and a blood supply cannula. It is usual that each member constituting the extracorporeal blood treatment system is separately packaged and assembled and connected immediately before use. In such an extracorporeal blood treatment system that is assembled and connected immediately before use, it takes time to assemble, and the assembly is a work requiring skill. Therefore, if the assembly is performed at the use work site immediately before use, the components will be mistaken. There is a problem that there is a possibility that the components that are connected to each other or that are cleaned by sterilization or the like and are kept clean and are packaged are contaminated.

Therefore, in a blood extracorporeal treatment system, particularly in an artificial heart-lung system used for extracorporeal circulation in cardiovascular surgery, parts are preliminarily shipped from the factory for the purpose of shortening assembly time and preventing misconnection. Attention has been paid to a pre-connecting system in which each component is connected and is commercialized in a sterilized form, and a demand for using the system is increasing.

However, as a problem of the pre-connecting system, as the packing operation of the extracorporeal blood treatment system of the pre-connecting system assembled at the manufacturing stage, packing is performed so that the tube portion is not bent or twisted, and It was difficult and time-consuming to pack the product so that it would not be bent or twisted and could be held during transportation. Furthermore, even if the tube portion is packed so as not to be broken or twisted as described above, it is required to be taken out with great care in the taking out process. For example, the tube portion is required to be taken out without breaking or twisting according to the state of packaging. Broken or twisted tubing causes problems such as kinking of the tubing or difficulty in properly placing the preconnecting system components, and in the worst case, each preconnecting system A situation may occur in which all the tubes that connect the members are disconnected and then reassembled.

As a means for solving the above-mentioned problem, for example, a method has been adopted in which several kinds of parts or all of the parts are commercialized in advance, and these are compactly housed. However, even if this method is adopted, overheating during sterilization and the tube portion that is wound and stored during packaging are forced to have a packing shape during the storage period, which may cause curling, There is a problem that if the procedure is mistaken when opening the tube, the tube will be tangled and the tube will be twisted. And, if the tube is twisted as described above, once the connection of the tube in which the twist has occurred is taken off and twisted, it is possible to sterilize in a closed state by pre-connecting each member. The benefits of a pre-connecting system that maintains As described above, once the pre-coupling is released and twisted, it is not only a troublesome and troublesome work as described above, but also a problem of maintaining sterility.

In addition, the pre-connecting system is not only susceptible to twisting during the packing operation, packing, and opening of the packing, but is also connected to a member that may need to be detached from the system during its use. Tube part,
For example, the tube portion connected to the arterial filter may twist during temporary removal, movement, or replacement. Further, when the tube portion is long, the tube portion is likely to be twisted due to the above operation.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the problems that occur in the prior art blood extracorporeal treatment preconnecting system. That is, the object of the present invention is to eliminate the twist aseptically, particularly aseptically, and even when the tube portion constituting the blood extracorporeal treatment preconnecting system is twisted. It is possible to provide a preconnecting system for extracorporeal blood treatment.

[0008]

SUMMARY OF THE INVENTION The present invention is an extracorporeal blood treatment preconnecting system, for example, an artificial cardiopulmonary preconnecting system used for extracorporeal circulation in cardiovascular surgery, in which all the components of the system are pre-connected at the time of factory shipment. Member having the function of canceling the twist of the tube in the tube portion constituting these systems in the selected system or a system in which some of the systems are selected and connected (hereinafter, referred to as a twist canceling member)
By providing a system attached to the tube, the problem of tube kinking that occurs in the blood extracorporeal treatment preconnecting system could be solved.

Examples of the twist eliminating member include a tube connector having a rotating function. As the connector having the rotation function, for example, a holding member 11 for a first tube member, a holding member 14 for a second tube member, both the tube holding members 11, 1 as shown in FIG.
4, which has a connecting member 12 for holding 4 in a liquid-tight manner, and a seal member 13 for rotating the connector, and which has substantially no step between the tube holding members 11 and 14 and the seal member 13. To be

As another twist eliminating member that can be employed in the present invention, for example, a twist eliminating member as shown in FIG. 3 has a first tube member holding member and a second tube member holding member. In addition, a tube connector in which the holding member side of the first tube member and the holding member side member side of the second tube member can be separated and rejoined can be used. In the tube connector of this aspect, when the pretreatment system for extracorporeal blood treatment of the present invention is twisted, the holding member side of the first tube member and the second tube member of the tube connector near the twisted portion are disposed. By separating the holding member side, the twist generated in the extracorporeal blood treatment preconnecting system in the state where the first tube and the second tube are separated can be eliminated.

The tube connector of the above aspect may be rotatable if it is not rotatable, but in addition to the function that the holding member side of the first tube member and the holding member side of the second tube member can be separated and rejoined, What is possible is preferable. For example, the tube connector of this aspect attempts to eliminate the twist generated in the blood extracorporeal treatment preconnecting system without disconnecting the first tube member and the second tube member, and the twist is eliminated by the operation. If it is not possible, the operation of separating the holding member side of the first tube member from the holding member side of the second tube member and completely eliminating the twist is possible.

[0012] Each of the twist eliminating members may be provided on all of the tube portions constituting the pre-connecting system for extracorporeal blood treatment, but normally, when attached to the following places, the intended effect of the present invention will be obtained. Can be effectively achieved. (1) Tube part connected to pump In a blood extracorporeal treatment preconnecting system, a pump, for example, a blood pump is used, but the tube part connected to this pump is likely to be twisted. In particular, in the extracorporeal circulation circuit, a roller pump that moves while crushing the tube by external pressure is often used, but this pump segment part is strongly squeezed for a long time, so if the tube part is twisted, sufficient compression cannot be performed. This makes it impossible to transfer the liquid, breaks the twisted part, and may cause cracks.

(2) Members for constituting a pre-connecting system for a partial blood extracorporeal blood treatment system in which both ends are held or fixed and connected to each other, or the above-mentioned members and a holding member such as a holder for holding or mounting the members, or The connecting tube part, both ends of which are fixed to the mounting device,
When twisting occurs, it is difficult to eliminate the twisting because both ends are fixed.

(3) A tube part for connecting a member (surgical field side member) to be attached to a patient and used for connecting the surgical field side member. The tube part has a large length and is apt to be twisted from the beginning and is temporarily twisted. If, for example, in a heart-lung machine, a plurality of tube portions connected to the vent catheter and the suction catheter are present close to each other,
If twisted and entangled with other tubes, the visibility of distinguishing the tubes from each other is significantly reduced, and it is very difficult to eliminate this twist. In addition, since the operator on the operative field side, such as a doctor, cannot keep his or her hand away from the operation, twisting may occur on the operation side.
Alternatively, even if it occurs in the vicinity thereof, it is not possible to deal with the twist until the twist is eliminated, so the twist is eliminated from the machine side member side (the member side of the blood extracorporeal treatment preconnecting system other than the member attached to the patient). However, since the work of removing the twist is performed away from the operative field side, it is often difficult to remove the twist.

In the case where the twist canceling member is mounted on the tube portion, if a plurality of tube portions are present close to each other, in order to ensure the distinguishability between the tubes, the plurality of tube portions are secured. In order to distinguish the tube portions from each other, the twist-eliminating member to be attached may be provided with tube identification. As means for giving the twist eliminating member distinctiveness, the twist eliminating members to be mounted may have different shapes, may be printed or marked, or may be colored. Further, the distinguishability may be imparted not only to the plurality of adjacent tube portions but also to the twist canceling member to be attached to other tube portions of the blood extracorporeal treatment preconnecting system of the present invention.

(4) When a tube partial blood extracorporeal treatment preconnecting system connected to a part that is temporarily detached from the mounting position is used, some of the members constituting the system are detached during use of the system. The tube portion connected to a member (for example, an arterial filter) that may need to be easily twisted when the member is attached and detached.

(5) A tube portion which is compulsorily compactly housed by winding when compared with the time of use A long tube portion, for example, a tube portion which constitutes a vent circuit or a suction circuit in an artificial heart-lung,
Since it is rolled and packed, the rolled state is forced during the storage period, so that twisting easily occurs. From the above viewpoints, specifically, for example, in a heart-lung machine pre-connecting system, as a particularly preferable arrangement position, a tube portion connecting the blood pump and the oxygenator, a operative field side member and a machine side member, for example, Examples thereof include a tube portion that connects a vent catheter and a vent pump, or a suction catheter and a suction pump, or a tube portion that connects to an arterial filter.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the present invention will be described by taking an artificial heart-lung system as an example of a pre-connecting system for extracorporeal blood treatment to which the present invention is applied. However, the blood extracorporeal treatment preconnecting system to which the present invention is applied is not limited to the artificial lung preconnecting system.

Embodiment 1 This embodiment will be described with reference to FIG. The heart-lung machine pre-connecting system according to the present embodiment is connected with an oxygenator that adds oxygen to blood to remove carbon dioxide, a liquid feed pump that serves to send out blood, a bypass circuit 7, a vent circuit 8, and suction circuits 9 and 10. It is composed of a blood reservoir, an arterial filter, an arteriovenous circuit (cannula connection circuit) 1, a bypass 2 and the like. A vent catheter 4 and a roller pump 3 are arranged in the vent circuit 8, and a suction catheter 5 and a roller pump 3 are arranged in the suction circuits 9 and 10. Further, the heart-lung machine preconnecting system of the present embodiment is cut at the position x shown in FIG. 1 and connected to the vent catheter 14, the suction catheter catheters 5 and 6 on the patient side, and the like. The bypass circuit 7 is arranged for the purpose of operations such as priming and blood return in the circuit.

In the artificial heart-lung preconnecting system of the present embodiment, the twist canceling member, which is a feature of the present invention, is attached to the following tube portions as shown in FIG. A twist canceling member a is disposed between the surgical field side and the machine side on the blood supply circuit side, a twist canceling member i is disposed near the arterial filter, and a twist canceling member h is disposed near the artificial lung, and the twist canceling member is disposed in the bypass circuit 7. h, a twist canceling member g is arranged between the artificial lung and the liquid feeding pump, and twist canceling members d, e and f are respectively arranged between the vent field 8 and the suction circuits 9 and 10 on the surgical field side and the machine side. Of the above circuits, the tube portions of the vent circuit 8 and the suction circuits 9 and 10 have large lengths of the tube portions themselves as described above, and are easily twisted. Since the visibility is poor due to the arrangement, the marks, marks and the like are attached to the twist eliminating members d, e and f to make it easy to identify each of these tubes.

Embodiment 2 As shown in FIG. 2, a connector having a rotating function has one tube holding member 11 and the other tube holding member 1.
4, a joining member 12 of a tube holding member that presses both of the tube holding members 11 and 14 and holds them in a liquid-tight manner, and an O-ring (sealing member) that allows the connector sandwiched by the tube holding members 11 and 14 to rotate. It is composed of 13 and has substantially no step between the tube holding members 11 and 14 and the ball sphere 13 which allows the connector to rotate. In particular, in the connector of the present embodiment, since there is substantially no step between the tube holding members 11 and 14 and the O-ring (sealing member) 13 that allows the connector to rotate as described above, there are few steps inside the connector. Of the rotatable tube connectors, the tube is particularly resistant to twisting, and even if twisting occurs, it can be easily eliminated. Furthermore, the connector of this figure can use tubes having the same inner diameter for both the tube holding members 11 and 14, and therefore can deliver a high blood volume, which is particularly suitable for heart-lung machines.

Embodiment 3 As shown in FIG. 3, a female connector A having a holding member 16 for a first tube member 15 and a second tube member 2 are provided.
7 and a male connector B having a holding member 26, and is, for example, a female connector B in the direction of the arrow in the drawing.
A tube connector capable of joining the two connectors by moving the connector and separating the female connector A and the male connector B from the joined state is an example of the twist eliminating member. The female connector A has a holding member 26 for the tube member 27, a holding member 17 for the tube 15, and a connector outer surface 1 for keeping the tube 15 held by the holding member 17.
When the cap 18 and the male connector B mounted on the male connector 9 are fitted into the female connector A, the O of the male connector B is
A ring (seal member) 22 has a resilient stopper through which it can pass, and a stopper 20 for the cap 18.

The male connector B includes a holding member 26 for the tube member 27 and a holding member 1 for the tube 15.
7, and a cap 24 fitted to the outer surface 25 of the connector to keep the tube 15 held by the holding member 17, and an O-ring (seal that can be fitted into the female connector A through a stopper). Member) 2
2 and the stopper 23 of the cap 24. The O-ring (seal member) 22 is made of a material that has a dimension such that the male connector B and the female connector B are joined together and that the O-ring (seal member) 22 is rotatable in the female connector B and that has lubricity. Those are preferable. When the extracorporeal blood treatment preconnecting system of the present invention is adopted for the connector of this embodiment, the male connector B is axially arranged.
Not only the female connector B and the female connector B can be easily joined / disengaged, but also the connector is rotatable, so that even if the tube portion constituting the pre-connecting system for extracorporeal blood treatment is twisted, Attempts to aseptically eliminate the twist by the rotation function, and if the twist is still not eliminated, the twist can be eliminated by releasing the connection between the male connector B and the female connector.

[00024]

[Effects] According to the present invention, even when the tube portion constituting the blood extracorporeal treatment preconnecting system is twisted, the twist can be aseptically eliminated, particularly aseptically and easily. A blood extracorporeal treatment preconnecting system is provided.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a state in which a connector having a rotating function is attached to a preconnecting system of a heart-lung machine.

FIG. 2 is a diagram showing an example of a connector having a rotating function used in the present invention.

FIG. 3 is a diagram showing an example of a connector which is separable / recombinable in the axial direction and has a rotation function, which is used in the present invention.

[Explanation of symbols]

1 Arteriovenous (cannula) connection circuit 2 Blood supply side (bypass) circuit 3 Roller pump 4 Vent catheter 5 Suction catheter 6 Suction catheter 7 Bypass circuit 8 Vent circuit 9 Suction circuit 10 Suction circuit 11 One tube holding member 12 First Connecting member of tube member and second tube member 13 O-ring (seal member) 14 Other tube holding member 15 Tube member 16 One tube holding member 17 Tube holding member 18 Cap 19 Outer wall surface 20 of female member A Cap 18 Stopper 21 O-ring (sealing member) 22 stopper 22 O-ring (sealing member) 23 stopper 24 cap 24 cap 25 outer wall surface 26 of male member B other tube holding member 27 tube member A female connector B male member Connector a Twist elimination member b Twist Compensating member c torsion compensating member d torsion compensating member e twisting compensating member f torsion compensating member g torsion compensating member h torsion compensating member i torsion compensating member j torsion compensating member

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yutaka Katsuki             12-17 Kako-cho, Naka-ku, Hiroshima City, Hiroshima Prefecture Stock Association             Company JMS (72) Inventor Ryoji Fujii             12-17 Kako-cho, Naka-ku, Hiroshima City, Hiroshima Prefecture Stock Association             Company JMS F term (reference) 3H104 JA04 JB02 JC10 JD09 LF03                 4C077 AA01 AA02 AA05 AA06 AA07                       AA11 BB01 BB06 DD23 EE01                       EE03 HH02 HH03 KK30

Claims (10)

[Claims] 1. In an aseptically packed blood extracorporeal treatment preconnecting system, a tube portion constituting the extracorporeal blood circulation preconnecting system is equipped with a member having a function of eliminating twisting of the tube. A blood extracorporeal treatment preconnecting system. 2. The pre-connecting system for extracorporeal blood treatment according to claim 1, wherein the member having a function of eliminating the twist of the tube is a tube connector having a rotating function. 3. A tube connector having a rotating function includes a holding member for a first tube member, a holding member for a second tube member, a connecting member for holding both the tube holding members in a liquid-tight manner, and the tube connector. The blood extracorporeal treatment preconnecting system according to claim 2, further comprising a seal member that is rotatable, and that there is substantially no step between the tube holding member and the seal member. 4. A member having a function of eliminating the twist of the tube includes a holding member for the first tube member and a holding member for the second tube member, and a holding member side of the first tube member and a second member. The extracorporeal blood treatment preconnecting system according to claim 3, wherein the holding member side of the tube member is a tube connector that can be separated and rejoined. 5. The extracorporeal blood treatment preconnecting system according to claim 4, wherein the tube connector is rotatable. 6. The extracorporeal blood treatment preconnecting system is a system having a blood pump, wherein at least one tube portion connected to the blood pump is provided with a member having a function of canceling the twist of the tube. The blood extracorporeal treatment preconnecting system according to any one of claims 1 to 5, wherein 7. A tube part for connecting a member to be mounted on a patient and a member on the machine side, a tube part in which a plurality of tube parts are present close to each other, and both ends are held or fixed to a holding member or a mounting device. At least one of the tube portion connected to a part that is temporarily detached from the mounting position, or a member having a function of canceling the twist of the tube is attached. Item 7. An extracorporeal blood treatment preconnecting system according to any one of Items 1 to 6. 8. The blood according to claim 1, wherein a member having a function of eliminating the twist of the tube is provided with a distinguishing property for distinguishing from other tube portions. Extracorporeal treatment preconnecting system 9. The distinctiveness of the member having a function of canceling the twist of the tube is such that a tube portion in which a plurality of tube portions are present close to each other is distinguished from another tube portion in the vicinity thereof. The extracorporeal blood treatment preconnecting system according to claim 8. 10. The extracorporeal blood treatment pre-connecting system is an artificial heart-lung system, which is used for a tube portion connecting a blood pump and an artificial lung, a tube portion connecting a surgical field side member and a machine side member, or an arterial filter. The pre-connecting system for extracorporeal blood treatment according to any one of claims 1 to 9, wherein a member having a function of canceling the twist of the tube is attached to at least one connected tube portion.