JPS61259676A - Branched valve - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention provides medical infusion sets 1, blood circuits, etc.
This invention relates to a branch valve that can mix multiple types of chemical solutions.

(Prior art and its problems) In infusions, blood transfusion sets, single blood circuits, etc., various drug solutions may be mixed in from the middle of the circuit depending on the patient's medical condition.

For this reason, conventional methods have been adopted in which a branch tube for injecting the drug solution is provided in the main tube, or a mixed injection section made of rubber is provided, and the drug solution is mixed into the mixed injection section using a syringe.

In order to connect a branch tube to the main tube or install a mixed injection section, for example, as shown in Fig. 8,
Divide the main tube 40.4<1 and separate each tube 40.
Apply adhesive 41 to the tip of the tube, push it into the connecting tube 42, and then connect it to the upper opening 4 of the reading tube 42.
3 to which a rubber stopper 44, a branch tube, etc. were connected.

However, the manufacturing process of this method is very laborious and requires a great deal of skill, and the adhesive chill may be contaminated with chemicals, blood,
There was a risk of it leaching into the liquid.

In addition, with this structure, only seven types of medicinal solutions can be injected from the mixed injection section or branch tube, and if multiple medicinal solutions are to be injected at the same time, the above-mentioned branch tube or mixed injection section must be provided at another location. Not only that, but the structure of the entire line tube becomes complicated and the manufacturing cost also increases.

The present invention was proposed as a result of studies in order to solve the above-mentioned problems, and aims to provide a valve that can simultaneously and selectively mix multiple types of chemical solutions. .

(Means for Solving the Problems) As shown in FIGS. 1 to 6 corresponding to embodiments, the present invention provides a rotating body l to which a plurality of fluid tubes 9, 10° 11 are connected, and a It consists of a packing 2 in which opening slits 15 and 15 are partially formed on the circumference corresponding to the mounting position of the tube, and the rotating body 1 is mounted coaxially and rotatably to the packing 2.

(Function) According to the above configuration, when the rotating body 1 is rotated appropriately, a part or all of the connection openings 6, 7.8 of each fluid tube 9, 10.11 are connected to the opening slit 15.15 of the packing 2. When a match occurs, fluid flows only from the matching fluid tube. By appropriately rotating the rotating body l in this way,
Open the necessary fluid tubes 9, 10 and 11) 15
．． 15 to mix and communicate multiple types of fluids.

(Example) Examples of the present invention will be described below with reference to FIGS. 1 to 7.

First, FIG. 1 is a sectional view of the present invention, FIG. 2 is an exploded sectional view,
3 is a perspective view, and FIG. 4 is a partially cutaway perspective view, in which 1 is a rotating body, 2 is a packing, 3 is a stopper, and 4 is an exit cap.

The rotating body l has a generally concave cross section, and a stopper hole 12 is formed in the center of the bottom surface 5 as shown in FIG. 5, and a plurality of openings 6 and 7 are formed on the circumference of the same window. .8 is formed, and soft plastic tubes 9, 10.11 are connected to the openings 6, 7.8, respectively. Incidentally, a rotary lever 1a is provided protruding from a suitable position on the outer circumference of the rotary body 1.

The packing 2 also has a generally concave cross section,
As shown in FIG. 6, the bottom portion 13 has a stopper hole 14 formed in the center thereof, and an open loss lift 15.15 formed at the circumference of the same window. This open loss slip)
15.15 are formed on the circumference corresponding to the openings 6, 7.8 of the rotating body 1, and in this embodiment, two cylindrical positions are formed point-symmetrically.

The outer periphery of the packing 2 has a protrusion 1B.

16 is formed, and a groove 1 is formed inside thereof as shown in FIG.
7.17 is formed, and a locking portion 18 is formed at the peripheral edge on the opening side. Further, in order to reduce frictional resistance with the rotating body 1, a large number of annular square grooves 19 are formed in the bottom surface portion 13.

On the other hand, the stopper 3 has a shaft portion 21 protruding from one disk portion 20, and a wedge protrusion 22 is formed on the shaft portion 21. Furthermore, similar opening slits 23, 23 are formed in the disk portion 20 at positions corresponding to the opening slits 15.15 of the packing 2. Furthermore, the outlet tube 25 is connected to the bottom surface 24 of the outlet cap 4, and protrusions 27, 27 are protruded from the outer edge of the opening in correspondence with the gasket protrusions 16, 16. □ When assembling each of the above parts, first fit the bottom surface part 5 of the rotating body 1 into the inside of the packing 2, and engage the locking □ part 18 of the packing 2 with the outer peripheral stepped part 5a of the rotating body 1. y
let Thereafter, the shaft portion 21 of the stopper 3 is inserted into the stopper hole 14.12 of the gasket 2 and the rotating body 1, and the wedge protrusion 22 is engaged with the bottom surface portion 5 of the rotating body 1. This results in
゛The rotating body 1 is rotatably fixed to the packing 2.

Also, the exit side cap 4 has its protrusion 2'? .

27 is press-fitted into the grooves 17' and 17 of the seal protrusions 16, 16 to fix it to the seal 2. In this case, in this embodiment, a space 26 is formed between the back surface of the stopper disc part 20 and The tubes 9, 10.degree. 11 will be connected to the openings 6, 7.8 of the rotating body 1 after the respective parts are assembled.

The rotating body 1, stopper 3, and outlet cap 4 are preferably made of hard polycarbonate, polyvinyl chloride, etc., and the packing 2 is preferably made of a flexible material such as silicone comb or butadiene rubber.

Next, an example of the use of the above embodiment will be described. For example, by rotating the rotating body 1, the opening 6 and
7.8, each opening coincides with the end of the open slit 15.15 of the pankin 2, half open and half closed. The fluid in each tube 9.10.11 then flows through the half-opening of the seal opening loss lift 15.
15 and the stopper opening slit 23. After being mixed in the space 26, it flows out from the outlet tube 25.

Also, if you turn it slightly clockwise from the state shown in Figure 5, the opening 6,
8 is completely closed, the opening lower is completely opened, and the fifth
When rotated slightly counterclockwise from the state shown in the figure, opening 6.
8 is completely opened and the opening lower is closed. Thereby, the tube 9, to, connected to the opening 6°7.8,
Fluid from it will be drained or stopped.

Note that a clamp and a drip tube or an air trap are attached downstream of the outlet tube 25, and the clamp is used to stop all fluid outflow from the tubes 9, 10, and 11. In addition, the space portion 2
If the volume of the tube 6 is increased to allow sufficient mixing of each component, the drip tube or air trap downstream of the outlet tube 25 may be omitted.

By appropriately changing the positions of the openings 6, 7.8 of the rotating body 1 and the position of the opening opening 15.15 of the packing 2, an arbitrary distribution form can be selected.

Further, the branch valve described above can be applied to various uses. For example, when applied to a blood circuit of an artificial kidney, tube 10 is used for blood introduction, and the remaining tube 9 is used for blood introduction.
One tube 11 may be used for heparin injection, and the other tube 11 may be used for infusion.

Figure 4 is an example of the application of this proposal to a drip chamber of a blood circuit. In this drip chamber, a blood outlet tube 32 is fixed to the lower part of the soft plastic body 3 through a mesh 31, and a blood outlet tube 33 is attached to the side.
is provided, and the above-mentioned rotating body 1, gasket 2, and stopper 3 are attached in combination to the upper opening. In this case three wooden tubes 9 connected to one rotating body 1
, 10.11, the tube 11 is used for the monitor line, the tube 9 is used for level adjustment, and the monitor line tube 11 is always kept open by adjusting the rotating body 1. Further, in this embodiment, the blood inlet 33 is connected to the main body 3.
Although the cap 4 is provided on the side of the tube 10, the blood may be allowed to flow in from the tube 10. Note that the outlet cap 4 is not required in this embodiment.

The detailed invention can be applied to medical valves such as perfusion fluid distribution valves in peritoneal dialysis, as well as to physical and chemical experiments and industrial valves.

(Effects) According to the present invention as described above, when a chemical solution containing multiple types of components is mixed and delivered, the chemical solution can be selectively distributed by simply rotating the rotating body appropriately, and the operation becomes extremely simple. In addition, by mass-producing the rotating body, paraquin, stopper, outlet cap, etc. by injection molding, etc., and assembling them, it is possible to easily repair them by simply inserting fluid tubes, etc. in the required places. Compared to the conventional example in which branch portions are provided at a plurality of locations, the manufacturing process can be omitted, and the overall circuit configuration can be made more compact.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an embodiment of the present invention, Fig. 2 is an exploded sectional view, Fig. 3 is a perspective view after assembly, and Fig. 4 is an exploded sectional view.
The figure is also a partially cutaway perspective view, and Figure 5 is a plan view of the rotating body.
FIG. 6 is a plan view of the packing, FIG. 7 is a schematic diagram for explaining another embodiment of the present invention, and FIG. 8 is a cross-sectional view of a conventional co-infusion part branch. In the figure, 1 is a rotating body, 2 is a gasket, 3 is a stopper, 4 is an outlet cap, and 6, 7.8 are openings. 9, 10, and 11 are tubes, and 15 is an opening slit. Patent applicant: Kawasumi Chemical Industry Co., Ltd. Agent: Yoshikazu Nishino, patent attorney

Claims (1)

[Claims] It consists of a rotating body to which a plurality of fluid tubes are connected, and a packing having opening slits partially formed on the circumference corresponding to the mounting positions of the fluid tubes, and the rotating body is coaxial with the packing and A branch valve characterized by being rotatably mounted.