JPH1057451A - Cap with nozzle of pervasucular nutrient vessel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the insertion of tubes for injection of various sizes and to make it possible to surely hold the tubes for injection of various sizes. SOLUTION: A nozzle 2 of a convergent circular truncated cone shape having a single tapered angle of 5 to 20 deg. is integrally formed at a cap body 3 having a threaded part 4 to be fitted onto the outer periphery of the mouth part of a pervascular nutrient vessel 3. As a result, even if the diameter of the tube 7 for injection varies with the kinds of transfusion sets, the insertion thereof is easy and the excellent tube holding power is obtainable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap with a nozzle for a tube feeding device used for tube feeding in which a nutrient is directly injected into a digestive organ of a patient through a tube.

[0002]

2. Description of the Related Art Tube feeding agents used in tube feeding are:
Usually supplied as powder in a storage container. At the hospital, this powder is taken out of the storage container, dissolved in a dissolving mixer, transferred to a tube feeding nutrient container called an irrigator, the nozzle of this container is inserted into an infusion set, and connected to the infusion set for injection. Nutrition is injected by placing the end of the tube into the patient's body. However, recently, in order to prevent the risk of contamination during dissolution and transfer performed in open air and to reduce the labor of nurses, the same procedure is used for storing, dissolving, and injecting tube feeding nutrients. A new system with tube feeding containers is being developed. In order to make effective use of this new system, the junction between the tube feeding container and the infusion set is an important point.

[0003] Generally, infusion sets of various sizes and shapes are used, and they are selectively adopted by each hospital. In contrast, the new system uses a tube of nutritional supplement of the same shape, so that the nozzle of the cap must be able to accommodate various sized tubes of the infusion set. Therefore, as shown in FIG.
Attempts have also been made to provide a plurality of ring-shaped projections 31 having different outer diameters on the nozzle 32 to accommodate a plurality of types of tube diameters.

[0004] However, the nozzle 32 having such a shape may be very difficult to insert depending on the diameter of the injection tube, or may be easy to insert, but the holding force of the tube may be weak. In particular, since this portion is likely to be wet by the nutrient, if the holding power of the tube is weak, the injection tube may fall out of the nozzle 32 during use. In addition, it may be necessary to replace the tube 7 to 8 times a day for one patient, and if it is difficult to insert the tube, a lot of labor is required for the nurse.

Further, as shown in FIG. 6, when a nozzle 32 having a plurality of ring-shaped projections 31 is to be formed from plastic, streaks of the joint of the mold may be formed in the longitudinal direction, and burrs may be generated in a severe case. There is. For this reason, the sealing performance between the tube and the nozzle 32 may be impaired, or the nurse may injure his / her finger.

[0006]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems and can surely hold injection tubes of various sizes, and inserts injection tubes of various sizes into a nozzle. The purpose of the present invention is to provide a cap with a nozzle for an easy tube feeding nutrient container.

[0007]

The cap with a nozzle of the tube feeding nutrient container of the present invention, which has been made to solve the above problems, is fitted on the inner surface of the cap body around the outer periphery of the mouth of the tube feeding nutrient container. And a nozzle having a tapered truncated cone shape having a single taper angle of 5 to 20 ° is integrally formed on the upper side of the top surface of the cap body. In addition, it is preferable to integrally form a seal portion fitted to the inner periphery of the mouth of the tube-feeding nutrient solution container on the lower side of the top surface of the cap body, and an overcap for covering the nozzle is provided at the base of the nozzle. It is preferable that the ridge to be fitted is formed integrally.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below. 1 and 2 show a first embodiment of a cap with a nozzle according to the present invention.
Is a nozzle integrally formed on the upper side of the top surface of the cap body. As shown in FIG. 3, a screw portion 4 is formed on the inner surface of the cap body 1 so as to be fitted to the outer periphery of the mouth of the tube-feeding nutrient solution container 3. Further, it is preferable that a skirt-shaped seal portion 5 fitted to the inner periphery of the mouth of the tube-feeding nutrient solution container 3 is integrally formed below the top surface of the cap body 1. With this structure, the cap main body 2 is securely attached to the mouth of the tube nutrient container 3 in a sealed state.

In the present invention, the nozzle 2 has a shape of a truncated cone, and a nutrient supply hole 6 is formed at the center. The nozzle 2 has a single taper angle of 5 to 20 °. For this reason, when inserting the injection tube 7 into the nozzle 2 as shown in FIG. 4, the injection tube 7 can be smoothly inserted to a depth corresponding to the diameter of the injection tube 7, and at that position, the injection tube 7 can be inserted. Can be reliably held. If the taper angle is less than 5 °, the nozzle length becomes too long in order to cover a large diameter to a small diameter of the injection tube. Conversely, if the taper angle exceeds 20 °, the insertion tube is large. It is not preferable because force is required. In particular, it is preferable to set the taper angle in the range of 8 to 13 ° in order to balance the holding force and the ease of insertion.

As described above, the nozzle 2 having a single taper angle can be easily formed of plastic without using a split mold. For this reason, there is no possibility that burrs will be generated on the side surface of the nozzle 2 as in the related art, and the sealing property between the injection tube 7 and the nozzle 2 will not be impaired, and fingers may be injured during handling. Absent.

The tube 3 is filled with a nutrient powder 8 in advance. For this reason, an overcap 9 for sealing the inside and preventing contamination of the nozzle 2 is attached so as to cover the nozzle 2 as shown in FIGS. Reference numeral 10 denotes a ridge integrally formed on the base of the nozzle 2.
By elastically fitting the ridge 11 inside the
The overcap 9 is attached to the nozzle 2. In addition,
A tapered plug 12 protruding inward is provided at the tip of the overcap 9, and seals the nutrient supply hole 6 of the nozzle 2.

In the above example, the nozzle 2 is constituted by a completely tapered surface. However, as shown in FIG. 5, a part of the tapered surface may be slightly recessed. However, the depression is formed to such an extent that it can be molded without using a split mold, and the upper and lower portions of the depression do not deviate from a single taper angle. If such a condition is satisfied, the effect of the present invention can be obtained even if a slight depression is provided as shown in FIG.

The cap with nozzle of the present invention thus constructed is attached to the mouth of the tube-feeding nutrient solution container 3 previously filled with the nutrient powder 8, and the overcap 9 is fitted on the outside thereof. Then shipped from the drug manufacturer. At the time of use, the cap main body 1 is removed, and slightly hot water is injected, and after stirring the inside, the injection tube 7 of the infusion set is inserted into the nozzle 2 as shown in FIG. At this time, even if the diameter of the injection tube 7 is different depending on the type of the infusion set, the insertion of the injection tube 7 is easy, and the injection tube 7 must be securely held as shown in the next embodiment. Can be.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A cap with a nozzle according to an embodiment of the present invention in which the taper angle of the nozzle is 13 °, a taper angle of the nozzle of 22 °
° and the cap with the nozzle shown in FIG. 6 and the cap with the nozzle shown in FIG.
The three types of injection tubes were inserted at a constant force of 4.5 kg, and then the force required to pull out the tube (retention force) was measured. A is a rubber tube having an inner diameter of 3 mm, B is a rubber tube having an inner diameter of 3.4 mm, and C is a rubber tube having an inner diameter of 6 mm. Table 1 shows the results.

[0015]

[Table 1]

[0016]

As described above, the cap with a nozzle of the tube feeder container of the present invention can easily insert injection tubes of various sizes and can reliably insert injection tubes of various sizes. Can be held. Moreover, since there is no risk of burrs being generated, there are many advantages such as the sealability between the tube and the nozzle being impaired, and the possibility that a nurse could injure a finger.

[Brief description of the drawings]

FIG. 1 is a side view of a cap with a nozzle according to the present invention.

FIG. 2 is a sectional view of a cap with a nozzle according to the present invention.

FIG. 3 is a cross-sectional view of a tube nutrient solution container equipped with the cap with a nozzle of the present invention.

FIG. 4 is a sectional view showing a use state.

FIG. 5 is a side view showing another embodiment of the cap with nozzle of the present invention.

FIG. 6 is a cross-sectional view showing a nozzle cap having a plurality of ring-shaped protrusions provided on a nozzle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cap main body 2 Nozzle 3 Tube feeding nutrient container 4 Thread part 5 Seal part 6 Nutrient injection hole 7 Injection tube 8 Nutrient powder 9 Overcap 10 Protrusion 11 Protrusion inside overcap 12 Tapered Plug 31 Ring-shaped protrusion 32 Nozzle

Claims (3)

[Claims] 1. A screw portion to be fitted on the outer periphery of the mouth of a tube nutrient solution container is formed on an inner surface of a cap body, and has a single taper angle of 5 to 20 ° on a top side of a top surface of the cap body. A nozzle cap for a tube-feeding nutrient solution container, wherein a frustoconical nozzle is integrally formed. 2. A cap with a nozzle for a tube feeding nutrient container according to claim 1, wherein a seal portion fitted to the inner periphery of the mouth of the tube feeding nutrient container is integrally formed below the top surface of the cap body. . 3. The cap with a nozzle for a tube-feeding nutrient solution according to claim 1, wherein a ridge for fitting an overcap covering the nozzle is formed integrally with the base of the nozzle.