JPH042672Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement of a tube connection connector constituting an artificial heart-lung circuit.

(Prior Art and its Problems) A heart-lung machine is used as a device that performs the functions of the heart and lungs during heart surgery and the like. This heart-lung machine is equipped with a tube for extracorporeal circulation of blood and a tube for oxygen addition, but when connecting these tubes in the operating room, a connector like the one shown in Figure 3 is generally used. ing. This connector has a configuration in which tube connection ports 30, 30 are formed at both ends of the cylindrical body.
Since the tubes 2 and 32 are simply inserted into both the connection ports 30 and 30, there is a problem that they are likely to come off when internal pressure is applied to the tubes 32 and 32. Therefore, in the past, each connection port 30, 30 was connected to the tube 3.
2 and 32 were fixed from the outer periphery with pins, etc., but these attachment tasks are troublesome especially in the operating theater, making it difficult to deal with emergencies, and also requiring the use of jigs unrelated to surgery in the operating theater. There was a problem that I had to bring it in.

The present invention solves these conventional disadvantages,
The present invention provides a connector that allows flexible tubes constituting an artificial heart-lung circuit to be connected simply, quickly, and firmly.

(Means for solving the problems) The means of the present invention for solving the above problems are as follows:
A cylindrical connector body having tube connection ports in at least two directions, a retaining ring loosely fitted to the intermediate body of the connector body, and a cap-shaped tube clamp provided on the connector body to cover each tube connection port. forming a section, dividing the clamp section in the circumferential direction and applying elastic force to each divided section, and configured so that the retaining ring is screwed with the outer surface of the tube clamp section and can move forward and backward; A stopper portion for regulating the forward movement of the presser ring is formed on the outer periphery of the tip of the tube clamp portion, and a tube presser protrusion is formed on the inner surface of the tip of the clamp portion.

(Function) After inserting the tube into the tube connection port, when the retaining ring is screwed onto the outer surface of the clamp portion and moved, the tube is strongly tightened to the connection port by the elastic force of the clamp portion. In this case, the forward movement of the tip of the clamp portion of the presser ring is regulated by the stopper portion.

(Example) An example of the present invention will be described below with reference to FIGS. 1 and 2. First, in FIG. 1, reference numeral 1 denotes a cylindrical connector body, which is made of hard polyvinyl chloride, polycarbonate, or the like. Both ends of this connector body 1 are formed into a slightly tapered shape to form tube connection ports 2, 2, and each connection port 2, 2 is formed into a slightly tapered shape.
A plurality of anti-slip steps 3 are formed on the outer circumferential surface of.

Further, cap-shaped clamp portions 4, 4 are formed on the connector main body 1 so as to cover the respective tube connection ports 2, 2. This clamp part 4,4
As shown in FIG. 2, it is divided into a plurality of parts in the circumferential direction, and each divided piece 4a is elastically bent in the axial direction. Further, thread grooves 5, 5 are formed on the outer peripheral surfaces of the clamp parts 4, 4,
Stopper portions 6, 6 are formed at the tip thereof. Further, a presser protrusion 7 is formed on the inner surface of the tip of each clamp portion, and a non-slip groove is formed on the contact surface of the presser protrusion 7 with the tube.

On the other hand, retainer rings 8, 8 are loosely fitted into the intermediate body of the connector body. Thread grooves 9 are formed on the inner surfaces of the press rings 8, 8, and when the press rings 8, 8 are moved and rotated in the direction of the clamp parts 4, the screw grooves 5, 5 of the clamp parts are formed. They are designed to be screwed together and move in the length direction of the clamp portion.

In the embodiments described above, the connector main body 1 has a straight tube shape, but a Y-shape or T-shape is also possible. In addition, the presser rings 8, 8 are attached to the clamp parts 4, 4.
It may be made to slide around the outer periphery of the. It goes without saying that other detailed configurations can be changed as necessary.

Next, an example of the use of the above embodiment will be described. First, a tube (not shown) of an artificial heart-lung circuit is inserted into the tube connection ports 2, 2. At this time, the clamp portions 4, 4 are in a state where the diameter is slightly enlarged due to the wall thickness of the tube. Subsequently, when the presser rings 8, 8 are moved and rotated in the direction of the respective clamp parts 4, 4, the presser rings 8, 8 are aligned with the screw grooves 5, 8 of each clamp.
5 and moves toward the end. Along with this, a pressing force is generated in the axial direction on the divided piece 4a of each clamp part, and the tube is strongly clamped between the connection ports 2, 2 and the clamp parts 4, 4 by the pressing force. In this case, due to the presence of the holding groove part 7 of the clamp part, the tube can be tightened more firmly.

Note that the stoppers 6, 6 prevent the presser rings 8, 8 from slipping outward.

(Effects) According to the present invention described above, the flexible tube constituting the heart-lung machine is fitted between the tube connection port of the connector body and the tube clamp portion, and the retaining ring is screwed onto the outer periphery of the clamp portion. Just,
The tube of the connection port is firmly connected by the pressing force of the divided piece of the clamp portion and the tube holding projection. In addition, the tube retaining ring reciprocates between the intermediate body of the connector body and the stopper at the tip of the tube clamp, and is always attached to the connector body, so there is no risk of losing it, and it is easy to operate. This provides benefits such as being able to respond immediately.

[Brief explanation of the drawing]

Fig. 1 is a half-sectional view showing an embodiment of the present invention;
The figure is a sectional view taken along the line AA in FIG. 1, and FIG. 3 is a schematic diagram showing a conventional connector. In the figure, 1 is the connector body, 2 is the tube connection port,
4 is a clamp portion, and 8 is a holding ring.

Claims (1)

[Claims for Utility Model Registration] A connector for connecting flexible tubes constituting an artificial heart-lung circuit, comprising a cylindrical connector body having tube connection ports in at least two directions, and an intermediate body of the connector body. A cap-shaped tube clamp portion is formed in the connector body so as to cover each tube connection port, and the clamp portion is divided in the circumferential direction to apply elastic force to each divided piece. The retainer ring is configured to be able to move forward and backward by screwing with the outer surface of the tube clamp portion, and a stopper portion for restricting the advance of the retainer ring is formed on the outer periphery of the tip of the tube clamp portion. , an artificial heart-lung circuit connecting connector characterized in that a tube holding projection is formed on the inner surface of the tip of the clamp portion.