JPH0438149Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is used in a medical device to connect two gas or liquid passage means, for example, two tubes. This invention relates to improvements in passage connecting devices.

(Prior Art) Conventionally, in a gas or liquid passage connecting device for a medical device that connects two gas or liquid passage means, for example, through two tubes, a female connecting terminal The convex edge formed at the end,
A lock connection is achieved by screwing the outer periphery of the male connection terminal provided on the other tube with the thread on the inner surface of the lock cylinder.

In this case, as shown in the fifth figure, the male connecting terminal A is formed integrally with the luer taper part b side, or the lock cylinder a is separated from the luer taper part b side and the lock cylinder a is formed as shown in the sixth figure. A male connecting terminal B is provided with a pair of steps d and d which are rotatably and slidably provided on the sliding part c and which prevent the lock cylinder a from being removed from the sliding part c, and as shown in the seventh figure. Lock tube a
is separated from the luer taper part b side, and a lock cylinder a is rotatably and slidably provided on the sliding part c, and a stepped part d is provided so that the lock cylinder a cannot be removed from the sliding part c to the luer taper part b side. , a male connection in which a groove f passing through the bottom surface e of the lock tube a is provided, and a protrusion g is provided at the rear end of the sliding portion c, which engages with the groove f and allows the lock tube a to freely pass through. Terminal C is known.

In the male connection terminal A shown in FIG. 5, the lock cylinder a is formed integrally with the Luer taper part b side.
When the female connecting terminal may become occluded. Further, since the twisted tubes Y and Y' rotate in the direction of loosening the screwed state due to the repulsive force of the twist, it is difficult to maintain the locking connection between the female connection terminal X and the lock tube a. In addition, the connection between the male connection terminal A and the female connection terminal
When only the fitting of the lock cylinder i is performed and the lock connection by the lock cylinder a is not required, the lock cylinder a becomes a hindrance.

In the male connection terminal B shown in Figure 6, the lock tube a is rotatably and slidably provided on the sliding portion c, so that the tubes Y and Y' connected thereto as described above are not twisted. , when the connection between the male connecting terminal B and the female connecting terminal . In addition, the lock cylinder a has a sliding part c on the side that holds it.
When releasing the luer taper connection of the luer taper parts b and i after releasing the lock connection between the female connection terminal X and the lock cylinder a,
The lock cylinder a rotates on the sliding part c and is in a state of idle rotation, and when releasing the lock cylinder, it is only possible to grasp the male connection terminal B exposed at the rear end of the lock cylinder A, so this release operation There is a problem.

The male connecting terminal C shown in Figure 7 is an improved version of the male connecting terminal B shown in Figure 6, and is used when the male connecting terminal C and the female connecting terminal X are connected only by fitting these Luer taper parts. The lock tube a passes through the protrusion g through the groove f provided in the tube.
Since it can be moved to the Y' side, the lock cylinder a
However, when making a lock connection between the male connection terminal C and the female connection terminal When moving to the side, it is necessary to align the groove f and the protrusion g and move the lock cylinder a into the sliding part c, which is time consuming. In addition, since the protruding part g is short and can freely slide between the groove f and the protruding part g, when releasing the Luer taper connection, the protruding part g and the groove f are engaged to connect the lock tube a to the male connecting terminal. Even if it is integrated with C, the lock cylinder a will move, which will hinder the operation to release the luer taper connection.

(Problems to be Solved by the Present Invention) The present invention eliminates such conventional inconveniences, and eliminates the need for the lock tube to become an obstacle when connecting between connecting terminals using only these Luer taper portions.
It is an object of the present invention to provide a gas or liquid passage connection device for a medical instrument that can be locked by a lock cylinder when locking is required.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a male connection terminal for a gas or liquid passage provided in one medical device and a gas or liquid passage provided in another medical device. A lock tube is connected to the female connecting terminal by fitting with a luer taper provided at the tip of each, and is rotatably attached to the outer periphery of the male connecting terminal on the convex edge provided at the rear end of the female connecting terminal. The male connecting terminal and the female connecting terminal are lock-connected by screwing a thread provided on the inner surface of the lock cylinder, and the male connecting terminal has a guide hole formed in the lock cylinder at the rear end of the luer taper part. A holding part is provided for inserting and holding the lock cylinder,
A sliding part is provided on the rear end side of the holding part to insert the guide hole of the lock cylinder and rotate and slide the lock cylinder in the guide hole, and the lock cylinder is installed on the side of the luer taper part of the holding part. a first tapered portion that is forcibly removable from the male connection terminal and engages with the guide hole;
A second tapered portion is provided on the sliding portion side of the holding portion for forcibly inserting the lock cylinder from the holding portion into the sliding portion, and a second tapered portion is provided between the second taper and the sliding portion. providing a stepped portion on the luer taper side that engages with the guide hole of the inserted lock cylinder and makes it impossible to remove the lock cylinder;
It is characterized in that a protrusion is provided on the outer side of the end of the sliding portion to engage with the bottomed groove of the lock cylinder.

(Function) The present invention provides a gas or liquid passage connection device for a medical device having such a structure, in which the lock cylinder does not get in the way when the connection terminals of the passage means are connected only by fitting these Luer taper parts. In this way, the lock cylinder is forcibly pulled out from the luer taper part via the first taper part and used. In addition, when making a lock connection between both connection terminals, the lock cylinder attached to the holding part of the male connection terminal is forcibly moved from the second tapered part to the sliding part side, and the lock cylinder is removed by the stepped part. A female connecting terminal is fitted to the male connecting terminal to prevent it from coming off, and a lock tube is screwed onto the female connecting terminal.

To release the lock connection between both connection terminals,
Rotate the lock cylinder against the female connection terminal to release the screw.

In addition, when releasing the Luer taper connection between both connection terminals, the lock cylinder whose lock connection has been released is engaged with the protruding part of the male connection terminal with its bottomed groove, and the lock cylinder is connected to the female connection terminal as a male connection terminal. It rotates together with the terminal and then separates.

In addition, when the luer taper connection between the female connection terminal and the male connection terminal is relatively loose, by rotating the lock tube and releasing the screw connection between the lock tube and the female connection terminal, the male connection terminal and the female connection terminal can be connected at the same time. Release the luer taper connection with the terminal.

(Embodiment) An embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 4.

FIG. 1 is an explanatory cross-sectional view showing the state before use, FIG. 2 is an explanatory cross-sectional view showing the lock-connected state,
FIG. 3 is an explanatory cross-sectional view showing a state in which the lock is released, and FIG. 4 is a cross-sectional view taken along the line -- in FIG.

The passage connecting device shown in FIGS. 1 and 2 has a female connecting terminal X of a tube Y that connects to one medical device (not shown), and a female connecting terminal X of a tube Y that connects to the female connecting terminal It consists of a male connecting terminal 2 equipped with a lock tube 1 for locking the tube Y'. The female connection terminal X and the male connection terminal 2
Both are molded from synthetic resin.

The lock cylinder 1 has a thread 12 formed on its inner surface.
, a guide hole 3 bored on the bottom side thereof, and two bottomed grooves 4 carved on the outer periphery of the guide hole 3. The male terminal 2 has a luer tapered portion 5 having a larger diameter from the tip and having a terminal end through which the guide hole 3 of the lock cylinder 1 can be forcibly passed.
, the diameter becomes small from the end of the lure taper part 5,
A first taper part 6 through which the guide hole 3 of the lock cylinder 1 can be forcibly passed toward the luer taper part 5 side, and a first taper part 6 that is connected to the first taper part 6 and the lock cylinder 1 is inserted into the guide hole 3 and held. The holding part 7 and the second tapered part 8 have a large diameter from the rear end side of the holding part 7 and have a terminal end through which the guide hole 3 of the lock cylinder 1 can be forcibly passed.
, the diameter becomes smaller from the second tapered part 8, and when the lock cylinder 1 is moved toward the holding part 7 side, the guide hole 3
a step part 9 that locks the lock cylinder 1 and prevents it from coming out; a sliding part 10 that is connected to the step part 9 and that holds the lock cylinder 1 in a rotatably slidable manner; It consists of two protrusions 11 at the terminal end of the sliding part 10 that engage with the bottomed groove part 12 of the lock cylinder 1.

Next, how to use the above embodiment will be explained.

Before the male connection terminal 2 is used, the lock cylinder 1 is attached to the holding part 7 from the luer taper part 5 side as shown in the first figure.

Connect male connection terminal 2 and female connection terminal X,
When fitting only these Luer taper parts 5, i, the lock cylinder 1 which becomes an obstacle is moved to 1a shown in the first figure.
The lock cylinder 1 is forcibly removed from the luer taper part 5 side along the first taper part 6, and the luer taper parts 5 and i are fitted together to connect.

In addition, when locking the connection terminals 2 and After that, the connection terminals 2 and X are connected by fitting these Luer taper parts 5 together. Next, the thread 12 of the lock tube 1 is screwed onto the convex edge h of the female connection terminal X to strengthen the fitting and to form a lock connection that prevents the connection terminals 2 and X from coming off.

To release the lock connection between the connecting terminals 2 and X, rotate the lock tube 1 in a direction that loosens the screw connection and move it toward the tube Y' side of the sliding portion 10. Next, when releasing the connection between the luer taper portions 5 and i, connect the bottomed groove portion 4 of the lock tube 1 to the male connecting terminal 2.
In this state, the male connecting terminal 2 is rotated together with the lock cylinder 1 in the opposite direction to the female connecting terminal X, and then separated.

In this way, if the lock tube 1 is not needed, it can be removed and used so that it does not get in the way, and if a lock connection is required between both connection terminals 2 and X, the lock tube 1 can be used.
This allows for easy lock coupling. Furthermore, when the luer taper connection is released, the lock tube 1 engages with its bottomed groove 4 and the protrusion 11, so that the lock tube 1 does not come off from the protrusion 11 and can be held together with the male connection terminal 2. The Luer taper connection between the connection terminals 2 and X can be easily released.

(Effects) As is clear from the above description, in the present invention, the lock cylinder is separated from the luer taper side, so when the tube is used in conjunction with a medical instrument, there is no need to twist the tube to occlude it. In addition, the lock cylinder can be forcibly removed by the first tapered part, or
By making it insertable, if the lock cylinder is not needed, it can be removed and used without getting in the way, and if a lock connection is required between both connection terminals, the second tapered part can be used. By moving the lock cylinder to the sliding part through the step, it is impossible to remove it at the stepped part, and by rotating the lock cylinder, a secure lock connection can be achieved. A gas or liquid passage connecting device for medical equipment that can be integrated with a male connecting terminal because it can be reliably engaged so that the lock cylinder does not come off the protruding part, and the luer taper connection between both connecting terminals can be easily released. can be provided.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the present invention. FIG. 1 is an explanatory sectional view showing the state before use, FIG. 2 is an explanatory sectional view showing the locked state, and FIG. 3 is an explanatory cross-sectional view showing a state in which the lock connection is released, FIG. 4 is a cross-sectional view taken along the line -- in FIG. 3, and FIGS. 5 to 7 are explanatory views of the conventional example. 1...Lock tube, 2...Male connection terminal, 3...
Guide hole, 4... Bottomed groove part, 5... Luer taper part, 6... First taper part, 7... Holding part, 8...
Second tapered part, 9...Step part, 10...Sliding part, 1
1...Protrusion part, 12...Thread, Y...Female connection terminal, i...Luer taper part, h...Convex edge.

Claims (1)

[Scope of utility model registration request] A male connection terminal for a gas or liquid passage provided on one medical device and a female connection terminal for a gas or liquid passage provided on another medical device are connected by fitting with a luer taper provided at the tip of each. The male connecting terminal and the female connecting terminal are connected by screwing a thread provided on the inner surface of a lock tube rotatably attached to the outer periphery of the male connecting terminal to the convex edge provided at the rear end of the female connecting terminal. A holding part is provided at the rear end of the luer taper part of the male connecting terminal to hold the lock cylinder by being inserted into a guide hole of the lock cylinder, and the rear end of the holding part is A sliding part is provided on the side to insert the guide hole of the lock cylinder and rotate and slide the lock cylinder in the guide hole, and a male connecting terminal is provided to forcibly connect the lock cylinder to the luer taper side of the holding part. A first tapered part is provided which engages with the guide hole so as to be removable from the locking part, and a first tapered part is provided on the sliding part side of the holding part so that the lock cylinder can be forcibly inserted from the holding part into the sliding part. 2
A tapered part is provided, and a step part is provided on the luer taper part side that engages with a guide hole of the lock cylinder inserted between the second taper part and the sliding part and makes it impossible to remove the lock cylinder. A gas or liquid passage connecting device for a medical device, characterized in that a protruding portion is provided on the outer side of the rear end of the sliding portion to engage with a bottomed groove portion of the lock cylinder.