JP2001231855A - Multi-puncture mixed injection tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multi-puncture mixed injection tube allowing mixed injection parts to be put at one place together, assuring limitless injector positions for needling work many times and facilitating assembly in manufacture. SOLUTION: This multi-puncture mixed injection tube comprises an inner cylinder 9 formed of a rubber elastic material adaptable to a human body and superior in tear-off strength, a protecting outer cylinder 8 with a sideways window hole 8c mounted outside the inner cylinder 9, and tube connectors 10 rotatably mounted at both ends of the inner cylinder 9. A tubing line 7 itself formed of the rubber elastic material is used for the multi-puncture mixed injection tube or the protecting outer cylinder 8 with the sideways window hole 8c is rotatably mounted on the tubing line 7 to form the multi-puncture mixed injection tube.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-puncture mixed injection tube used for injecting a drug solution or other liquid into a blood circuit, an infusion circuit, etc. of an artificial kidney.

[0002]

2. Description of the Related Art For example, an infusion set such as an intravenous drip circuit currently used, as shown in FIG. 4A, uses an infusion tube 15 and an infusion liquid supplied from the infusion tube 15 to a patient. A pipe tube 17 with a drip needle 16 to be injected into the body at the tip, and an appropriate number of pipe tubes 17
It is composed of a co-infusion tube 18 connected, a flow regulator 19 and the like.

As shown in FIG. 4B, a blood circuit of the artificial kidney includes a circulating pump 20, a flow regulator (not shown), a dialyzer 21, a piping tube 22 for connecting these components, and , A lead needle and a lead needle to the patient 23 are attached, and even in the middle of the pipe tube 22,
An appropriate number of co-infusion tubes 18 are connected.

As shown in FIG. 4C, the co-infusion tube 18 has a T-shaped tube shape, and a rubber stopper 18a is fitted in a central branch tube portion, so that a patient can be administered a medicine. A syringe is inserted from above the rubber stopper 18a and a syringe (not shown) is inserted.
Injecting chemicals inside.

[0005] The medication from the co-infusion tube 18 requires repeated administration of the same drug solution or another drug solution at predetermined time intervals or at an appropriate time point according to the patient's situation with the recent advancement of medical treatment. In this case, if there is only one co-infusion tube 18, the rubber plug 18a is repeatedly inserted through the injection needle.
May be damaged, causing liquid leakage or blood leakage. In order to prevent this, in advance, a plurality of co-infusion tubes 18 are connected to the piping tubes to provide a medical device with advanced medical care, and in the future, the number of co-infusion tubes connected will tend to increase,
When each co-infusion tube is used several times, the co-infusion tube 18
Nurses etc. affix identification tapes indicating usage limits to
Identification is made by attaching an identification mark.

[0006]

However, the structure in which a plurality of co-injection tubes 18 are connected as described above is costly, and the plurality of co-infusion tubes 18 must be connected by cutting the piping tube into small pieces. However, there is a drawback that the number of connection points increases and the number of leak points increases accordingly.

The present invention solves the above-mentioned drawbacks of the conventional co-infusion tube, consolidates the co-infusion portion at one place, allows puncturing many times, ensures an infinite number of injection needle piercing points, and enables assembly during manufacturing. It is an object of the present invention to provide a multi-puncture co-infusion tube which can be facilitated.

[0008]

In order to achieve the above object, a multi-puncture co-infusion tube according to the present invention has a human body compatible and high tear strength for a tube for infusion set such as a blood circuit and a drip circuit. It is characterized by comprising a rubber-like elastic material. In the present invention, since the tubing tube itself is a multi-puncture co-infusion tube, the puncturing position of the injection needle can be selected at any position over the entire length of the tubing tube, and the puncturing position of the injection needle is infinite. Can be secured. In addition, since the tubing tube is made of a rubber-like elastic material having human body compatibility and high tear strength, the tubing tube may be broken even when the injection needle is directly inserted into the tubing tube during administration to a patient. No, the drug solution can be injected into the piping tube as intended, and
After the administration, when the injection needle is pulled out of the pipe tube, the self-restoring elastic action of the rubber-like elastic material constituting the pipe tube naturally closes the withdrawal mark at the needle tip of the injection needle, and the liquid from the withdrawal mark is removed. There is no fear of leakage or blood leakage, and it is possible to prevent the destruction from cracking and crack breakage, and there is no problem when used as a piping tube for a blood circuit or an infusion circuit.

Further, the multi-puncture co-infusion tube of the present invention is a protection device having a horizontal window hole at a part of a piping tube of an infusion set or the like made of a rubber-like elastic material having high tear strength and having human compatibility. It is characterized by mounting an outer cylinder. With this configuration, at the time of medication, a medical solution can be injected into the piping tube by inserting a syringe needle through the horizontal window hole of the protective outer cylinder, and at this time, the punctured portion of the piping tube is more easily held by the protective outer cylinder. In addition, the needle tip of the injection needle can be reliably prevented from penetrating through the piping tube by the protective outer tube, and there is no mistake of penetrating to the back side of the piping tube and stabbing the palm, and the medicine can be securely and reliably administered. it can. In this case, by forming the lateral window holes at a plurality of positions around the protective outer tube in a non-opposed state, a function as a multi-puncture co-infusion tube can be provided.

[0010] The multi-puncture co-infusion tube of the present invention is characterized in that the protective outer tube is mounted on a piping tube of an infusion set or the like so as to be rotatable around the piping tube. With this configuration, at the time of administration, the position of insertion of the injection needle can be freely selected within a range of 360 degrees around the piping tube by rotating the protective outer tube, and the protective outer tube can be moved in the pipe axis direction of the piping tube. It can be shifted to ensure an infinite number of puncture positions for the injection needle, and in this case, only one horizontal window hole is formed in the protective outer cylinder,
The configuration of the protective outer cylinder can be simplified.

[0011] The multi-puncture co-infusion tube of the present invention has an inner cylinder made of a rubber-like elastic material having human body compatibility and high tear strength, and a lateral window hole mounted on the outside of the inner cylinder. And a protective outer cylinder. With this configuration, it is possible to form a multi-puncture mixed injection tube in a form independent of the piping tube, and since it is a form in which a plurality of conventional mixed injection tubes are integrated into one, it is convenient to handle.
Since the structure also consists of an inner cylinder and an outer cylinder, it is easy to manufacture,
It is simple because it only requires fitting when assembling.

Further, the multi-puncture co-infusion tube of the present invention is characterized in that the protective outer cylinder with a window opening in the lateral direction is mounted on the inner cylinder so as to be rotatable around the inner cylinder. With this configuration, at the time of administration, the position of inserting the injection needle can be freely selected within a range of 360 degrees around the inner cylinder by rotating the protective outer cylinder, and a large number of puncturing positions of the injection needle can be secured.

[0013] The multi-puncture co-infusion tube of the present invention is characterized in that a pipe connector is provided at both ends of the inner cylinder. This configuration facilitates connection to the piping tube.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1A is a schematic diagram showing a first embodiment in which the present invention is applied to an infusion set such as an infusion circuit, and FIG. 1B is a main part of a puncture part of an injection needle. Enlarged sectional view, FIG.
(A) is an overall schematic diagram showing a second embodiment of the present invention,
(B) is an enlarged sectional view of a main part of a puncture part of the injection needle, FIG. 3 (A) is a front view of a multi-puncture mixed injection tube showing a third embodiment of the present invention, and a left half is shown in cross section. (B) is a cross-sectional plan view, and (C) is a schematic view of a state connected to a piping tube.

In FIG. 1, 1 is a drip tube, 2 is a drip needle,
Reference numeral 3 denotes an air reservoir, 4 denotes a flow regulator, 5 denotes a syringe, 6 denotes an injection needle, and 7 denotes a piping tube. In the first embodiment of the present invention, the piping tube 7 is made of a rubber-like elastic material having human body compatibility and high tear strength, and the piping tube 7 itself is a multi-puncture mixed injection tube. This rubber-like elastic material has human body compatibility in order to apply it to the piping tube 7 of a blood circuit, a drip circuit, etc. so as not to cause any trouble.
It does not break when the needle 6 is withdrawn and inserted several times and has physical properties with high tear strength to the extent that it does not leak, is rich in toughness, and has moderate flexibility. Accordingly, when the injection needle 6 of the syringe 5 is punctured as shown in FIGS. 1A and 1B at the time of administration, the rubber-like elastic material at the punctured site is removed while being elastically deformed to the periphery, and the injection needle 6 The tip of the needle is advanced into the pipe tube 7 to tightly seal the periphery thereof, and the liquid in the pipe tube 7 is prevented from flowing out of the puncture site. Can be injected. Then, when the injection needle 6 is pulled out after the administration, the puncture site is closed while the rubber-like elastic material that has been elastically deformed to the periphery is restored, so that the liquid in the pipe tube 7 is prevented from leaking. You. In particular, since the puncture site is completely restored to the original state by the restoring action of the rubber-like elastic material, the medicine can be safely administered without tearing or tearing from the puncture site.

In the second embodiment of the present invention, as shown in FIG. 2, a protective outer tube 8 is rotatable on a part of the pipe tube 7 in the first embodiment, and slides in the tube axis direction. It has been inserted as much as possible. The protective outer cylinder 8 has a through hole 8a having an inner diameter through which the pipe tube 7 can be inserted, formed in the pipe axis direction. An annular convex portion 8b is provided on an inner diameter surface near both ends thereof. The piping tube 7 is lightly compressed to have a clamping force. And the protective outer cylinder 8
A lateral window 8c is formed in a part of the outer peripheral surface in a long hole shape in the tube axis direction so that the injection needle 6 can be punctured from the lateral window 8c at the time of administration. Thus, the second aspect of the present invention
In the embodiment of the present invention, when the injection needle 6 is punctured into the piping tube 7 at the time of administration by using the protective outer tube 8, the punctured portion of the piping tube 7 is easily held by the protective outer tube 8,
In addition, it is possible to eliminate the mistake of penetrating the palm of the hand by penetrating to the back side of the piping tube 7, and to perform the medication with confidence and reliability. In this case, the horizontal window holes 8c are formed at a plurality of positions around the protective outer cylinder 8 so as not to face each other,
A function as a multi-puncture co-infusion tube may be provided.

However, the protective outer cylinder 8 is attached to the pipe tube 7 so as to be rotatable around the pipe tube 7, so that at the time of administration, the protective outer cylinder 8 is rotated to set the insertion position of the injection needle 6. It can be freely selected within a range of 360 degrees around the piping tube 7, and the protective outer tube 8 can be shifted in the direction of the tube axis of the piping tube 7 so that the puncturing position of the injection needle 6 can be secured indefinitely. In this case, only one horizontal window hole 8c is formed in the protective outer cylinder 8, and the configuration of the protective outer cylinder 8 can be simplified.
The material of the protective outer cylinder 8 may be synthetic resin, metal, or any other material.

The third embodiment of the present invention, as shown in FIG. 3, has an inner cylinder 9 made of the same rubber-like elastic material as that of the above-mentioned embodiment, which has human body compatibility and high tear strength. It is characterized by comprising a protective outer cylinder 8 with a horizontal window hole 8c mounted on the outer side of the inner cylinder 9 and a pipe connector 10 mounted on both ends of the inner cylinder 9. With this configuration, a multi-puncture mixed injection tube independent of the piping tube 7 can be provided, and since a plurality of conventional mixed injection tubes are combined into one, handling is convenient, and the structure is also convenient. Since it is composed of the inner cylinder 9 and the protective outer cylinder 8, it is easy to manufacture, and it is simple because it only requires fitting when assembling. Further, in the multi-puncture co-infusion tube according to the third embodiment of the present invention, the protection outer cylinder 8 with the horizontal window hole 8c is rotatably mounted on the inner cylinder 9 around the inner cylinder 9. Thus, at the time of medication, the protective outer cylinder 8 can be turned to freely select the puncturing position of the injection needle 6 within a range of 360 degrees around the inner cylinder 9, and a large number of puncturing positions of the injection needle 6 can be secured. it can. Further, since the connecting members to the piping tube 7 are provided at both ends of the inner cylinder 9, the connection to the piping tube 7 is facilitated. This third
The piping tube 7 in the embodiment of the present invention is applied directly to a conventional one. In FIG. 3A, reference numeral 11 denotes a slide bearing ring interposed between the inner cylinder 9 and the protective outer cylinder 8, and is also used as a positioning member for both of them in the axial direction. The pipe connector 10 is made of a synthetic resin, a metal, or any other appropriate material. The pipe connector 10 and the inner cylinder 9 are engaged with each other at a plurality of annular engaging concave and convex portions 10a and 9a by utilizing the elasticity of the inner cylinder 9, and the liquid is utilized by utilizing the elasticity of the inner cylinder 9. A leak-proof seal may be provided, or the seal may be securely made with an adhesive. Note that the protective outer cylinder 8 and the pipe connector 10 are rotatably engaged with the annular engaging concave and convex portions 8d and 10b for positioning in the axial direction.

[0019]

According to the first aspect of the present invention, since the piping tube itself is a multi-puncture co-infusion tube, the insertion position of the injection needle can be selected anywhere in the entire length of the piping tube. Thus, the injection needle puncturing position can be secured indefinitely. In addition, since the tubing tube is made of a rubber-like elastic material having human body compatibility and high tear strength, the tubing tube may be broken even when the injection needle is directly inserted into the tubing tube during administration to a patient. Instead, the drug solution can be injected into the piping tube as intended, and when the injection needle is pulled out from the piping tube after administration, the injection is performed by the self-restoring elastic action of the rubber-like elastic material that constitutes the piping tube. The needle tip of the needle is naturally closed, and there is no danger of fluid leakage or blood leakage from the needle tip. There is no problem if it is used as a piping tube for a drip circuit.

According to the second aspect of the present invention,
It is possible to inject a drug solution into the piping tube by piercing the injection needle from the horizontal window hole of the protective outer cylinder, at which time the piercing point of the piping tube is more easily held by the protective outer cylinder, and
The needle tip of the injection needle can be reliably prevented from penetrating through the piping tube by the protective outer cylinder, so that there is no mistake of penetrating to the back side of the piping tube and piercing the palm, and the medicine can be securely and reliably administered. In this case, by forming the lateral window holes at a plurality of positions around the protective outer tube in a non-opposed state, a function as a multi-puncture co-infusion tube can be provided.

According to the third aspect of the present invention, at the time of medication,
By turning the protective outer cylinder, the insertion position of the injection needle can be freely selected within a range of 360 degrees around the piping tube, and furthermore, the protective outer cylinder is shifted in the pipe axis direction of the piping tube,
It is also possible to secure an infinite number of puncturing positions for the injection needle, and in this case, it is only necessary to form one horizontal window hole formed in the protective outer cylinder, and the configuration of the protective outer cylinder can be simplified. it can.

According to the invention of claim 4, the multi-puncture co-infusion tube can be formed independently of the piping tube, and the conventional co-infusion tube is integrated into one. It is easy to handle, and the structure is composed of an inner cylinder and an outer cylinder, so that it is easy to manufacture, and it is simple because it only needs to be fitted when assembled.

According to the invention of claim 5, at the time of medication,
Turn the protective outer cylinder to set the insertion position of the injection needle around the inner cylinder.
It can be freely selected within a range of 60 degrees, and a large number of puncturing positions of the injection needle can be secured.

Further, according to the invention of claim 6, connection to the piping tube becomes easy.

[Brief description of the drawings]

FIG. 1A is an overall schematic view showing a first embodiment in which the present invention is applied to an infusion set such as an infusion circuit, and FIG. 1B is an enlarged sectional view of a main part of a puncture part of an injection needle.

FIG. 2A is an overall schematic view showing a second embodiment of the present invention, and FIG. 2B is an enlarged sectional view of a main part of a puncture part of an injection needle.

FIG. 3 (A) is a front view of a multi-puncture co-infusion tube showing a third embodiment of the present invention, in which the left half is shown in cross section, (B) is a cross-sectional plan view, and (C) is a piping tube. FIG.

4A is a schematic diagram of a conventional infusion circuit, FIG. 4B is a schematic diagram of a conventional blood circuit, and FIG. 4C is a vertical sectional side view of a conventional co-infusion tube.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Infusion tube 2 Infusion needle 3 Air reservoir 4 Flow controller 5 Syringe 6 Injection needle 7 Piping tube 8 Protective outer cylinder 8c Horizontal window hole 9 Inner cylinder 10 Piping connector

Claims (6)

[Claims] 1. A multi-puncture co-infusion tube, wherein a piping tube of an infusion set such as a blood circuit or an infusion circuit is formed of a rubber-like elastic material having human body compatibility and high tear strength. 2. A protective outer cylinder with a horizontal window hole is mounted on a part of a piping tube of an infusion set or the like made of a rubber-like elastic material having human body compatibility and high tear strength. Multi-puncture mixed injection tube. 3. The multi-puncture co-infusion tube according to claim 2, wherein the protective outer cylinder is mounted on a piping tube of an infusion set or the like so as to be rotatable around the piping tube. 4. An inner cylinder made of a rubber-like elastic material having human body compatibility and high tear strength, and a protective outer cylinder with a horizontal window hole mounted outside the inner cylinder. Multi-puncture co-infusion tube, characterized in that: 5. The multi-puncture co-infusion tube according to claim 4, wherein the protective outer cylinder having a window opening in a horizontal direction is attached to the inner cylinder so as to be rotatable around the inner cylinder. 6. The multi-puncture co-infusion tube according to claim 4, wherein a pipe connector is provided at both ends of the inner cylinder.