JPH0613746Y2 - Clamp - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention constitutes medical devices such as a blood bag, a plasmapheresis bag, an autotransfusion set, a high calorie infusion bag, an infusion bag, a blood transfusion, and an infusion set. The present invention relates to an improvement of a clamp arranged in the middle of a liquid transfer tube.

[Prior Art] The applicant applied for the clamp 21 shown in Fig. 6 (see Japanese Patent Application No. 1-34051).

The clamp 21 is made of a synthetic resin such as polypropylene, polyacetal, or hard polyvinyl chloride, is composed of a main body 22, a sealing member 23, and a hinge portion 24, and is integrally formed.

The sealing member 23 has a claw prevention portion 35 formed at one end of the outer edge portion, a convex liquid transfer tube holding portion 28 formed inside, and an end portion of the outer edge (a position intersecting the length direction of the liquid transfer tube 33). ) Includes a plurality of fitting protrusions 26 and fitting grooves 27.
Are integrally formed, and the liquid transfer tube 3 is provided at one end of the outer edge portion (the same position as the length direction of the liquid transfer tube 33).
3, the mounting groove 31 and the holding member 32 of the liquid transfer tube 33
Are integrally molded.

The main body 22 is internally formed with a sandwiching portion 25 of a convex liquid transfer tube 33, and the sealing member 2 is provided at one end of the outer edge portion (a position intersecting the length direction of the liquid transfer tube).
The fitting groove 29 and the fitting protrusion 30 are integrally formed at positions facing the fitting protrusion 26 and the fitting groove 27 of FIG.

Further, the holding member 32 is formed with a cutout portion 34 so that the liquid transfer tube 33 can be easily mounted in the tube mounting groove 31.

[Problems to be Solved by the Invention] However, since the clamp 21 has a small contact area between the holding member 32 and the liquid transfer tube 33, the clamp 21 is poorly fixed to the liquid transfer tube 33, and the clamp 21 does not move when the medical device is transported. The liquid transfer tube 33 may come off. Further, since the holding member 32 is thin, it has a drawback that it is easily broken. Further, since the sealing member 23 of the clamp 21 is always open, it is bulky and inconvenient to handle. Further, when the liquid transfer tube 33 is clamped, the holding portion 2
A considerable amount of force was required to hold it down on the 5 and 28 sides. In order to solve the above problems, the inventor of the present invention has made earnest studies and, as a result, has arrived at the next device.

[Means for Solving the Problems] A clamp 1 installed in the middle of a liquid transfer tube constituting a medical device, wherein a sealing member 3 and a main body 2 are integrally formed via a hinge portion 4, 2 is formed in a cylindrical shape, and a liquid transfer tube insertion passage 7 having a curved bottom surface is formed to penetrate in the length direction, and the sealing member 3 is mounted on the top surface of the tube insertion passage 7. A portion 8 is formed, and the fitting groove 8 and the fitting groove 1 of the sealing member 3 are formed in the fitting portion 8.
2 is formed, and the sealing member 3 is formed with a pressing portion 5 of the liquid transfer tube 10 whose tip is formed into a curved surface, and a side surface of the pressing portion 5 is sealed with a locking portion 6 corresponding to the main body 2. A portion 1 is formed, and the length L of the pressing portion 5 is shorter than the depth D of the insertion passage 7 to provide the clamp 1.

[Operation] Before the tube 10 is clamped, it can be temporarily fixed to the tube 10, and the temporary fixing can be made compact in the length direction of the tube 10, so that it is not bulky. Further, when the tube 10 is clamped, the pressing resistance is small, and the liquid flow path of the tube 10 can be reliably blocked even with a light force.

[Embodiment] FIG. 1 is a schematic view of a clamp 1 of the present invention, and FIGS. 2 to 4 are schematic views of clamping a liquid transfer tube 10 (hereinafter abbreviated as tube 10) by the clamp 1. 5 and 5 are sectional views taken along the line AA of FIG. The clamp 1 of the present invention is made of synthetic resin such as polypropylene, polyacetal, hard polyvinyl chloride, etc., and the main body 2 and the sealing member 3 are integrally formed via a hinge portion 4.

A tube pressing portion 5 is formed at the tip of the sealing member 3, the tip of the pressing portion 5 is formed in a curved surface, a sealing portion 11 for the main body 2 is formed on the front surface, and a main body 2 is formed on the side surface. The locking portion 6 is formed.

The main body 2 is formed in a tubular shape, a tube insertion passage 7 formed in a curved shape in the length direction is formed therethrough, and a mounting portion 8 of the sealing member 3 is formed on the top surface. An engaging groove 9 and a mounting groove 12 corresponding to the main body 2 are formed in the portion 8.

The length L of the tube pressing portion 5 is slightly shorter than the depth D of the tube insertion passage 3. This is because when the tube is clamped, a space for escape of the synthetic resin that constitutes the tube 10 is secured, and the synthetic resin is completely adhered along the curved surfaces of the tube pressing portion 5 and the tube insertion passage 7 and the tube This is because it is possible to completely block the liquid flow paths of 10.

Next, a method of attaching the clamp 1 to the tube 10 and a method of clamping the tube 10 will be described. First, with the sealing member 3 open as shown in FIG. 2, the tube 10 is passed through the insertion passage 3 and the sealing member 3 is pushed down toward the main body 2 as shown in FIG. The locking part 6 is the main body 2
It is mounted in the locking groove 9 of. By doing so, the clamp 1 can be temporarily fixed compactly in the longitudinal direction of the tube 10 in the longitudinal direction.

As a result, the clamp 1 does not easily come off when the medical device constituted by the tube 10 to which the clamp 1 is attached is transported.

When the tube 10 is clamped, the sealing member 3 is pushed further downward as shown in FIG.
The sealing portion 11 is fitted into the mounting groove 12 of the mounting portion 8. As a result, the synthetic resin forming the tube 10 completely adheres to the tube pressing portion 5 and the curved surface of the tube insertion passage 7, so that the liquid flow path of the tube 10 is completely blocked.

[Advantage of the Invention] As described above, according to the present invention, since the tube 10 can be temporarily fixed to the tube 10 before being clamped, the tube 10 can be securely fixed to a specific position. Since the temporary fixing can be made compact in the length direction of the tube 10, it is not bulky and is advantageous for packaging and transportation. Since the tip of the tube pressing portion 5 and the surface of the tube insertion passage 7 are formed into a curved surface, there is little pressing resistance when the tube 10 is clamped, and the liquid flow path of the tube can be reliably blocked even with a light force. .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a clamp of the present invention, FIG. 2, FIG.
FIG. 4 is a use state diagram, FIG. 5 is a sectional view taken along line AA of FIG.
FIG. 6 shows a schematic view of a conventional clamp. In the figure, 1 is a clamp, 2 is a main body, 3 is a sealing member, 4 is a hinge part, 5 is a tube pressing part, 6 is a locking part, 7 is a tube insertion passage, 8 is a mounting part, and 9 is a locking groove. , 11 are sealing parts, 1
Reference numeral 2 indicates a mounting groove.

Claims (8)

[Scope of utility model registration request] 1. A clamp 1 installed in the middle of a liquid transfer tube constituting a medical device, comprising: 2. A sealing member 3 and a main body 2 are integrally formed via a hinge portion 4, 3. The main body 2 is formed in a cylindrical shape, and a liquid transfer tube insertion passage 7 having a curved bottom surface is formed so as to penetrate in the longitudinal direction thereof. 4. A mounting portion 8 for the sealing member 3 is formed on the top surface of the tube insertion passage 7, 5. The engaging groove 9 of the sealing member 3 in the mounting portion 8.
And the mounting groove 12 is formed, 6. The pressing member 5 of the liquid transfer tube 10 having a curved end is formed on the sealing member 3, 7. A locking portion 6 and a sealing portion 11 corresponding to the main body 2 are formed on the side surface of the pressing portion 5, 8. The clamp, wherein the length L of the pressing portion 5 is formed shorter than the depth D of the insertion passage 7.