JPH0530766Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a clamp used by being installed in the middle of a tube constituting a medical device related to blood transfusion and infusion.

[Prior art and problems with the prior art] Currently, high-calorie infusion bags (infusion tubes such as a drug introduction tube and drug outlet tube, and an infusion needle are attached to the main body of the infusion bag)
After each drug solution is injected into the infusion bag body, the drug solution introduction tube is tied to prevent the drug solution from flowing backwards, completely blocking the drug solution flow path, and the drug solution is stirred and mixed. The task of completely blocking the road is troublesome. For this reason, it is conceivable to install a clamp in the middle of the chemical liquid introduction tube to block the liquid flow path.

FIG. 5 shows an example of a currently used clamp.

The clamp 15 is made of flexible synthetic resin such as polyacetal, and housings 18 and 19 are formed through a bent portion 17 in which a tube insertion hole 16 is formed.

The housing 18 is formed with a clamping part 20 and an engaging part 21 of the tube, and the other housing 19 is formed with a clamping part 22 and an engaging groove 23 at positions corresponding to the clamping part 20 and the engaging part 21. There is. 24
25 indicates the insertion hole of the tube and the handle.

In use, as shown in FIG.
is engaged with the engagement groove 23 and sequentially moved downward, and at the same time, the interval between the clamping parts 20 and 22 becomes narrower, and the tube 26 is closed, so that the flow of liquid in the tube 26 is stopped.

Further, when the handle 25 is pushed to the right, the engaging portion 21 and the engaging groove 23 are disengaged.

Therefore, when an external force is applied to the handle 25 and/or the engaging portion 21 or due to the operator's manual operation, the engaging portion 21 and the engaging groove 23 are disengaged, and the liquid flows through the tube again.

Further, in Japanese Patent Application Laid-open No. 47-21991, an arm 28 and an arm 30 are connected by a curved portion so as to be able to hinge.
The arm 28 has an arcuate groove 62 and a recess 36.
A flexible tube sealing device is described in which the arm 30 forms a sealing member 40 having an arcuate protrusion 50 and a keying surface 46 .

This flexible tube sealing device includes sealing members 34, 40.
The surfaces 5 of the sealing members 34, 40 are sealed in a closed state by mutual engagement of the sealing members 34, 40.
2 and 44 elastically cooperate to mainly deform the member 40, so that the surface 44 of the member 40 forms the recess 36 of the member 34.
are configured to snap into and interengage with each other.

However, the surfaces 44, 4 facing each other
Since these surfaces 44 and 48 are mutually engaged only by the engagement of the surfaces 44 and 8, the engagement surfaces of these surfaces 44 and 48 may become disengaged when an external force is applied or due to the operator's manual operation.
Since the liquid flow path of the tube, which was once blocked, is opened, the liquid can flow inside the tube.

Further, Japanese Utility Model Application No. 48-66581 describes a clamping device for a gas inlet pipe of a gas balloon for weather observation, etc. This clamping tool has a left side part 4 and a right side part 3 integrally formed through an elastic bending part 2, and a clamping pressure part 15 having an uneven part 16 and an end part 12 having a notch part 11 on the left side part 4. A clamping portion 8 having an uneven portion 9 and an engaging portion 6 having a hook portion 7 are formed on the right side portion 3.

In this clamping tool, an end portion 1 having a cutout portion 11 is formed.
2 is formed so as to engage with the locking portion 7 of the engaging portion 6, so that the end portion 12 will not engage when an external force is applied or due to the operator's skill, as in the case of the flexible tube sealing device. It comes off from the stop 7, and the once-occluded liquid flow path of the tube is opened.

When these flexible tube sealing devices and clamping devices are used in the drug solution introduction tube of the high-calorie infusion bag, etc., when the drug solution is stirred and mixed, the clamp comes off and the liquid flow path of the tube is opened, and the drug solution is It cannot be used because it may cause backflow.

Therefore, the inventor of the present invention has conducted intensive studies on a clamp that can permanently block the liquid flow path such as the chemical liquid introduction tube, and has arrived at the following idea.

[Means for Solving the Problems] In the present invention, a first sealing member 5 having a side wall and a second sealing member 6 having a side wall are integrally formed via a hinge portion 2, and the first sealing member 5 has a side wall. The sealing member 5 has a convex holding member 3 formed in its midsection, and a fitting protrusion 7 and a fitting groove 8 at one end; A convex holding member 4 is formed, and a fitting protrusion 10 corresponding to the fitting groove 8 and the fitting protrusion 7 are formed at one end thereof.
A fitting groove 9 corresponding to the tube is formed, and a tube mounting groove 11 is formed at the end in the length direction where the tube is mounted, and the first sealing member 5 and the second sealing member 6 are closed. Sometimes, the respective end surfaces are formed so as to overlap each other, and the convex clamping members 3 and 4 are arranged so as to alternately clamp the tube, and the fitting projections 7 and The fitting groove 9, the fitting protrusion 10, and the fitting groove 8 are formed so as to fit closely together at the same time, and the fitting protrusion 7, the fitting groove 9, and the fitting protrusion 10 The fitting groove 8 provides the clamp 1 which is maintained in a state in which it will not open again once it is fitted.

[Operation] After placing the tube 12 in the mounting groove 11, when the first sealing member 5 is closed in the direction of the second sealing member 6,
The fitting protrusion 7 and the fitting groove 9 and the fitting protrusion 10 and the fitting groove 8 are simultaneously and tightly fitted to each other, and at the same time, the end face of the first sealing member 5 and the second sealing member 5 are tightly fitted to each other. The end surfaces of the sealing member 6 overlap each other,
The tube is held by convex holding members 3 and 4 at a plurality of locations, and the liquid flow path of the tube is closed.
Therefore, the liquid flow path of the tube 12 is completely blocked and the flow of liquid is stopped. Once fitted, the fitting between the fitting protrusion 7 and the fitting groove 9, and the fitting between the fitting protrusion 10 and the fitting groove 8 will never come off again, so liquid will not flow through the tube again.

[Example] An example of the clamp of the present invention will be described with reference to the drawings. FIG. 1 shows a perspective view of the clamp in an open state, and FIG. 2 shows a perspective view of the clamp in an open state.

The clamp 1 is made of flexible synthetic resin such as polypropylene, polyacetal, or hard vinyl chloride, and includes a first sealing member 5 having a side wall 5b and a second sealing member having a side wall 6b via a hinge portion 2. 6
are integrally formed.

The first sealing member 5 has a convex holding member 3 on its midsection, and a fitting protrusion 7 and a fitting groove 8 formed at one end as shown in FIG. 3.

The second sealing member 6 has a holding member 4 having a convex shape on its midsection, and a fitting protrusion 10 corresponding to the fitting groove 8 at one end, as shown in FIG. 3, and the fitting protrusion. A fitting groove 9 corresponding to 7 is formed, and a fitting groove 11 of the tube is formed at one end in the length direction where the tube is attached.
is formed.

When the first sealing member 5 and the second sealing member 6 are closed, the respective end surfaces 5c and 6c are formed so as to overlap with each other, and the convex holding member 3 and the convex The clamping members 4 are arranged so as to alternately clamp the tubes, and the fitting protrusions 7 and the fitting grooves 9 and the fitting protrusions 10 and the fitting grooves 8 are arranged simultaneously with each other as shown in FIG. Formed for a close fit.

After the fitting protrusion 7 and the fitting groove 9 and the fitting protrusion 10 and the fitting groove 8 are once fitted,
It will not open again. ``A state in which it will not open again'' means that it will not open unless it is forcibly opened with a screwdriver or the like, and it will not open by external force or the operator's manual effort.

Next, an example of how to use the clamp 1 of the present invention will be explained.

As shown in FIG. 2, the first sealing member 5 and the second sealing member 6 are half-opened at an angle of 180°, and the tube 12 is mounted in the mounting groove 11 of the tube.

When the first sealing member 5 is pushed in the direction of the second sealing member 6, the tips 3d and 4d of the convex clamping members 3 and 4 gradually bite into the tube 12 (FIG. 4).

Further, the fitting protrusion 7 and the fitting groove 9 and the fitting protrusion 10 and the fitting groove 8 are simultaneously and tightly fitted to each other, and at the same time, the end surface 5c of the first sealing member 5 and the fitting groove 9 are closely fitted to each other. End surface 6c of second sealing member 6
are superimposed on each other, and as shown in FIG.
Since the tube 12 is held in multiple places by the tubes e and 6e, the fluid flow path of the tube 12 is closed.

The tube 12 is not only held at the plurality of locations, but also pressed down by the side walls 6b, 5b of the second sealing member 6 and the first sealing member 5,
Furthermore, the fitting protrusion 7, the fitting groove 9, and the fitting protrusion 1
0 and the fitting groove 8 are completely fitted, so once the first sealing member 5 and the second sealing member 6 are closed, they cannot be opened again unless they are forcibly opened from the outside with a screwdriver or the like. Also, once the liquid flow path of the tube 12 is closed, it will not be opened.

In addition, in the description of the present invention, the relationship between the first sealing member 5 and the second sealing member 6 was explained as the side on which the mounting groove 11 of the tube was formed was described as the second sealing member 6. , if the tube mounting groove 11 is formed in the first sealing member 5, the first sealing member 5 becomes the second sealing member 6.

[Effect of the invention] Once fitted, the fitting protrusion 7 and the fitting groove 9 and the fitting protrusion 10 and the fitting groove 8 will never come apart again, so liquid will not flow inside the tube again. Therefore, it is extremely effective when it is desired to permanently block the flow of liquid within the tube.

Since side walls are formed on the first sealing member 5 and the second sealing member 6, and the entire clamp 1 is formed in a so-called box shape, it is easy to hold and clamp the tube.

A clamp 15 (FIG. 5), arms 28, 3, consisting of a housing 18, 19 without conventional side walls.
Flexible tube sealing device consisting of
21991), a clamping tool (Utility Model Application No. 48-66581) consisting of a left side part 4 and a right side part 3, the tube is sandwiched between the housings 18, 19 (arms 28, 29, left side part 4, right side part 3). When clamping the tube, the housings 18, 19 (arms 28, 29, left side 4, right side 3) are expected to bend, making it difficult to clamp the tube. Since the first sealing member 5 and the second sealing member 6 are reinforced by the side walls,
When clamping the tube by sandwiching it between the first sealing member 5 and the second sealing member 6, the tube can be easily held down and clamped easily.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the clamp of the present invention in a closed state, Fig. 2 is a perspective view of the clamp of the present invention in an open state, and Fig. 3 is a perspective view of the clamp of the present invention in a fitted protrusion. FIG. 4 shows an enlarged sectional view of the groove, FIG. 4 shows a central vertical sectional view of FIG. 1, and FIG. 5 shows a perspective view of the conventional clamp in an open state. In the figure, 1 is a clamp, 2 is a thin part, 3 and 4 are convex holding members, 5 is a first sealing member, 6 is a second sealing member, 7 and 10 are fitting protrusions, and 8 and 9 indicate a fitting groove, 11 a tube mounting groove, and 12 a tube.

Claims (1)

[Claims for Utility Model Registration] A first sealing member 5 having a side wall and a second sealing member 6 having a side wall are integrally formed via a hinge portion 2, and the first sealing member 5 is , a convex holding member 3 is formed on the midsection thereof, and a fitting protrusion 7 and a fitting groove 8 are formed at one end, and the second sealing member 6 is provided with a convex holding member 4 on the midsection thereof. is formed, and a fitting protrusion 10 corresponding to the fitting groove 8 and the fitting protrusion 7 are formed at one end.
A fitting groove 9 corresponding to the tube is formed, and a tube mounting groove 11 is formed at the end in the length direction where the tube is mounted, and the first sealing member 5 and the second sealing member 6 are closed. Sometimes, the respective end surfaces are formed so as to overlap each other, and the convex clamping members 3 and 4 are arranged so as to alternately clamp the tube, and the fitting projections 7 and The fitting groove 9, the fitting protrusion 10, and the fitting groove 8 are formed so as to fit closely together at the same time, and the fitting protrusion 7, the fitting groove 9, and the fitting protrusion 10 fit together at the same time. The clamp 1 is characterized in that the fitting groove 8 is maintained in a state in which it does not open again after being fitted once.