JP2004041612A - Connecting structure of medical implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connecting structure of a medical implement which can prevent a tube connected to a dialyzer from being twisted. <P>SOLUTION: A tubular insert port 3 formed with a tapered part 3a is provided at a container 2 of the dialyzer 1, and a sleeve 9 coupled integrally with the tube 8 is connected to the port 3. A fixed side connector 4 is provided spaced apart from the port 3 on a periphery of the port 3 provided at the container 2, and female threads 4a are formed on the connector 4. Meanwhile, male threads 6a engaged with the threads 4a are formed in an inner hole 5a of a dialyzer connector 5, for inserting the sleeve 9 into its inside. When the connector 5 is clamped at the connector 4, the sleeve 9 is press-bonded between the port 3 and an inner hole 5a, and the tube 8 is locked to the port 3 via the sleeve 9. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a container for accommodating a medicine or the like used for a medical device, and a connection structure for a medical device capable of preventing a tube or the like connected to the container from twisting.
[0002]
[Prior art]
FIG. 5 is a schematic diagram showing the mechanism of hemodialysis. Hemodialysis is performed by removing blood toxins and water from blood collected from a human artery using a dialyzer having a special filter, and returning the cleaned blood to a vein.
Specifically, as shown in FIG. 5, blood collected from an arterial circuit 51 of the human body is transferred to an arterial air trap 53 by a blood pump 52, and the air trap 53 evacuates air that has entered erroneously. Is transferred to the dialyzer 54. The dialyzer 54 is provided with a number of tubes thinner than the hair, from which toxins and the like are removed, and the filtered blood is transferred to the venous air trap 55 via the tube 63. At this time, the necessary components are replenished from the dialysate supply device 56 to replenish the necessary components lost in the dialyzer 54. The venous air trap 55 removes air that has entered by mistake as in the case of the arterial air trap 53. The blood that has passed through the vein air trap 55 is returned to the vein circuit 57 of the human body. Reference numeral 58 in the figure denotes a coagulant supply device to which an anticoagulant for preventing blood coagulation is supplied.
[0003]
Conventionally, the connecting portion between the dialyzer 54 and the tube 63 is configured such that the distal end of the tube is inserted into a cylindrical insertion port provided in the dialyzer. However, simply inserting the tube into the outlet may cause the tube to come off, and the connection between the dialyzer and the tube will be locked under the guidance of the Ministry of Health, Labor and Welfare.
FIG. 6 is an enlarged view of the dialyzer 54 after the measures are taken. Such a dialyzer 54 is provided with a fixed connector 60 having a female screw 61 formed in a container 59 and an insertion port 62 provided inside the fixed connector 60. A dialyzer connector 64 as a movable connector to which the tube 63 is integrally fixed is connected to the insertion port 62. The dialyzer connector 64 is formed with a male screw 65 that can be fastened to the fixed connector 60 of the dialyzer 54.
[0004]
[Problems to be solved by the invention]
As described above, the dialyzer and the tube are locked, and the dialyzer 54 and the tube 63 are locked. Therefore, when screwing the dialyzer connector 64 to the fixed-side connector 60, the dialyzer connector 64 and the tube 63 are integrally attached, so that the tube 63 rotates together with the dialyzer connector 64 and twists the tube 63. Is generated. Naturally, the twist of the tube 63 hinders the flow of blood in the tube 63. Accordingly, the tube 63 is connected to the dialyzer 54 by rotating the dialyzer connector 64 in advance by the amount of rotation opposite to the rotation direction of the screw, according to the experience of the nurse, but it is difficult to completely prevent twisting. And it took time and effort.
[0005]
The present invention has been made in view of such circumstances, and has a medical device connection structure capable of preventing torsion of a tube connected to a dialyzer without changing the shape of a dialyzer side currently used. The purpose is to provide.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the medical device connection structure of the present invention includes a tubular insertion port provided in a container, a tube connected to the insertion port, and a connection port provided in the container. A fixed-side lock portion having a screw formed at an interval around the periphery, and a movable-side lock member having an inner hole through which a tube is inserted inside and having a screw formed to screw with the screw of the fixed-side lock portion. When the movable locking member is fastened to the fixed locking portion, the inner hole of the movable locking portion presses the tube to the insertion port side and locks the tube to the insertion port. I did it.
In the medical connection structure, a locking member for preventing the movable lock portion from falling can be fitted to the tube. Further, the insertion port of the container has a tapered shape in which a distal end side is thinned, and the tube can be connected to the insertion port with a sleeve interposed therebetween.
Further, in another aspect of the present invention, a cylindrical insertion port provided in the container, a fixed side lock portion provided with a screw around the insertion port provided in the container with an interval, and A movable locking member formed integrally with a tube connected to the insertion port, and having a screw formed to be screwed into the screw of the fixed locking portion; A female luer having a female screw and a male luer having a female screw engaged with the male screw are provided, and the male luer is loosely fitted into an inner hole formed in the female screw. The female luer and the male luer were locked by screwing the screw and the female screw.
The connection structure of the medical device can be used as a dialyzer in which the container is provided with a filter for removing toxins and water in blood.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a connection structure of a medical device according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a dialyzer 1 according to the present invention, and FIG. 2 is an exploded view thereof. As shown in the figure, the dialyzer 1 is provided with a container 2 in which a filter is disposed, and a cylindrical insertion port 3 protruding downward is provided on a bottom surface 2a of the container 2 having a circular cross section. Is formed. The insertion port 3 has a large diameter on the base end side and a tapered portion 3a tapered on the front end side. Around the insertion opening 3, a cylindrical fixed-side connector 4 is formed so as to protrude downward at an interval. A female screw 4 a is formed on the inner peripheral portion of the fixed connector 4.
The insertion port 3 and the fixed-side connector 4 are both integrally formed on the bottom surface 2a of the container 2, and the axial length of the tapered portion 3a of the insertion port 3 is smaller than the axial height of the fixed-side connector 4. , And the tip end thereof is projected below the fixed connector 4.
[0008]
A dialyzer connector 5 as a movable connector is fastened to the fixed connector 4. The dialyzer connector 5 is formed of an upper screw portion 6 and a lower knob portion 7, and has a circular inner hole 5a formed therein. Then, a male screw 6 a is formed on the outer periphery of the screw portion 6, and the male screw 6 a is screwed with the female screw 4 a of the fixed connector 4.
One end of the cylindrical sleeve 9 is integrally fixed to the tube 8 and connected thereto, and the other end is connected to the insertion port 3 of the dialyzer 1. The inner diameter of the inner hole 5a of the dialyzer connector 5 is such that the sleeve 9 is sandwiched between the inner wall surface of the inner hole 5a and the outer peripheral surface of the tapered portion 3a of the insertion port 3 when the dialyzer connector 5 is fastened to the fixed connector 4. It is formed so as to be pressed. Further, a taper corresponding to the sleeve 8 may be formed in the inner hole 5a. However, when forming a taper, the thickness of the sleeve 9 is made slightly thicker than the width of the gap between the insertion port 3 and the inner hole 5a, and the sleeve 9 is inserted between the dialyzer connector 5 and the insertion port 3. It is formed so as to be crimped.
[0009]
Therefore, when the dialyzer connector 5 is screwed into the fixed-side connector 4, the insertion port 3, the sleeve 9, the male screw 6 a, and the female screw 4 a are provided in this order from inside to outside. A stopper 10 is provided below the dialyzer connector 5, and the stopper 10 has an inner hole 10 a through which the tube 8 passes. The stopper 10 is fixed to the outer peripheral portion of the tube 8, but may be fitted to the extent that it is manually moved. That is, the stopper 10 is for preventing the dialyzer connector 5 from falling down along the tube 8 when the dialyzer connector 5 is detached from the fixed-side connector 3. The insertion port 3, the fixed-side connector 4, and the dialyzer connector 5 can be made of a hard resin that does not deform, and the tube 8 and the sleeve 9 can be made of a soft resin. In the present embodiment, the dialyzer connector 5 uses polycarbonate, and the sleeve 9 and the stopper 10 use soft vinyl chloride.
[0010]
In order to insert the tube 8 into the dialyzer 1, the tube 8 shown in FIG. 2 is passed through the inner hole 5 a of the dialyzer connector 5 in advance, and then the distal end of the sleeve 9 is inserted into the insertion port 3. At this time, as shown in FIG. 3, the portion of the sleeve 9 inserted into the tapered portion 3a of the insertion port 3 is also tapered according to the shape of the tapered portion 3a. Shape. Then, the screws 4a and 6a of the dialyzer connector 5 and the fixed-side connector 4 are screwed. At this time, when the dialyzer connector 5 is screwed in, the sleeve 9 is pressed and tightened by the inner peripheral wall of the inner hole 5 a of the connector 5.
[0011]
The sleeve 9 can be omitted and the distal end of the tube 8 can be directly connected to the insertion port 3. However, if the thickness and material of the sleeve 9 are appropriately selected, a structure in which the sleeve 9 is directly inserted is provided. In this case, the adhesion between the sleeve 9 and the insertion port 3 and the locking of the sleeve 9 can be further improved. In this way, the dialyzer connector 5 is screwed into the fixed-side connector 4 to prevent the rotation of the sleeve 9 by crimping the tapered portion 3a of the sleeve 9 and indirectly also prevent the rotation of the tube 8 to thereby prevent the tube 8 from rotating. Can be prevented from being twisted.
Such a dialyzer 1 can be used instead of the dialyzer 54 shown in FIG. 5 described in the conventional example.
[0012]
Next, a connection structure of a medical device according to a second embodiment of the present invention will be described with reference to FIG.
In the present embodiment, the same parts as those of the dialyzer shown in FIG. 5 described in the related art are denoted by the same reference numerals, and detailed description thereof will be omitted.
As shown in FIG. 4, in the present embodiment, the connection structure between the dialyzer 54 and the tube 63 shown in FIG. 5 is used as it is, and a connection structure using a luer is provided in the tube 63.
[0013]
That is, a tubular female luer (or connector) 70 is connected to the end of the tube 63a connected to the dialyzer 54 side. At the tip of the female luer 70, a male screw 71 is attached to the female luer 70 by integral molding.
On the other hand, a male luer 72 is attached to the end of the tube 63b. The distal end of the male luer 72 has a tapered shape with a tapered distal end, and fits tightly with the inner hole of the female luer 70.
An annular connector 73 is provided around the male luer 72, and the annular connector 73 is rotatable around the axis of the male luer 72. The annular connector 73 has a well-known structure in which the male luer 72 is provided with a retaining structure, and a female screw 74 to be screwed with the male screw 71 is formed inside.
[0014]
With such a structure, the dialyzer connector 64 to which the tube 63a is attached is attached to the fixed-side connector 60. Then, the rotation of the dialyzer connector 64 causes the tube 63a to be twisted by the rotation. Therefore, the connection between the male luer 72 and the female luer 70 is released, the twist of the tube 63a is corrected, and then the male luer 72 and the female luer 70 are connected again by screwing. At this time, since only the female screw 74 rotates and the male luer 72 and the female luer 70 do not rotate with each other, the tubes 63a and 63b are not twisted.
In the present embodiment, the conventional product can be used as it is, and there is an effect that the range of versatility is wide.
[0015]
The embodiments of the present invention have been described above. However, the present invention is not limited to the embodiments, and various modifications and changes can be made based on the technical idea of the present invention.
For example, although the present embodiment has been described using the dialyzer used for hemodialysis, the connection structure of the medical device as another container has an effect of similarly preventing the tube from being twisted.
[0016]
【The invention's effect】
As described above, according to the medical device connection structure of the present invention, a tubular insertion port provided in a container, a tube connected to the insertion port, and an insertion port provided in the container A fixed-side lock portion having a thread formed at an interval around the periphery thereof, and a movable-side lock member having an inner hole through which the tube is inserted inside, and having a screw formed to screw with the screw of the fixed-side lock portion. When the movable locking member is fastened to the fixed locking portion, the inner hole of the movable locking member presses the tube to the insertion port side and locks the tube to the insertion port. As a result, the tube can be locked at the connection port and the tube can be prevented from being twisted.
In the above invention, the engaging member for preventing the movable lock member from dropping is fitted to the tube, so that when the fastening of the movable lock member is released, the movable lock member is transmitted through the tube. Falling can be prevented.
In addition, the insertion port of the container has a tapered shape with a thinned distal end side, and the tube is connected to the insertion port with a sleeve interposed, so that the material and thickness of the sleeve can be adjusted. This makes it easy to insert the sleeve into the insertion port, and by selecting the material and thickness of the sleeve, it is possible to improve the airtightness and the lock property between the sleeve and the insertion port.
In another aspect of the present invention, a cylindrical insertion port provided in the container, a fixed lock portion provided with a screw around the insertion port at an interval around the insertion port provided in the container, A tube connected to the mouth is integrally connected, and comprises a movable locking member formed with a screw to be screwed with the screw of the fixed side locking portion, and a male side screw is provided at an intermediate portion of the tube. A female luer having a female luer and a male luer having a female screw engaged with the male screw are loosely fitted in the inner hole of the female screw. The female luer and the male luer are locked by screwing the lure. As a result, twisting is prevented without changing the structure of the connection portion on the container side, so that the versatility is enhanced.
Furthermore, in the above invention, since the container is used as a container of a dialyzer provided with a filter for removing toxins and water in blood, it is possible to perform safe hemodialysis by preventing the tube from being twisted or coming off. became.
[Brief description of the drawings]
FIG. 1 is a schematic plan view of a dialyzer in a medical device connection structure according to a first embodiment of the present invention.
FIG. 2 is an exploded view of the dialyzer of FIG.
FIG. 3 is a plan view for explaining a connection portion of the dialyzer for fixing the dialyzer and the sleeve of FIG. 1;
FIG. 4 is a schematic plan view of a dialyzer in a medical device connection structure according to a second embodiment of the present invention.
FIG. 5 is a schematic diagram for explaining hemodialysis.
FIG. 6 is a schematic plan view of a dialyzer in a conventional medical device connection structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Dialyzer 2 Container 3 Slot 4 Fixed connector (fixed lock part, female connector)
4a female screw 5 dialyzer connector (movable lock member, male connector)
6a Male thread 8 Tube 9 Sleeve 10 Stopper

Claims (5)

A cylindrical insertion port provided in the container, a tube connected to the insertion port, a fixed lock portion provided with a screw and formed around the insertion port with an interval provided around the insertion port, A movable lock member having an inner hole through which the tube is inserted, and a screw formed to screw with the screw of the fixed lock portion,
When the movable lock member is fastened to the fixed lock portion, the inner hole of the movable lock member presses the tube to the insertion port side to lock the tube to the insertion port. A connection structure for a medical device, characterized in that: The connection structure for a medical device according to claim 1, wherein a locking member for preventing the movable lock member from falling is fitted to the tube and provided. The medical device according to claim 2, wherein the insertion port of the container has a tapered shape in which a distal end side is thinned, and the tube is connected to the insertion port with a sleeve interposed therebetween. Connection structure. A cylindrical insertion port provided in the container, a fixed side lock portion provided with a screw and formed around the insertion port provided in the container, and a tube connected to the insertion port include: A movable lock portion formed integrally with a screw, which is screwed with the screw of the fixed lock portion.
A female luer having a male screw and a male luer having a female screw engaged with the male screw are provided in the middle of the tube. A medical device connection structure wherein the female luer and the male luer are locked by fitting and screwing the male screw and the female screw. The connection structure for a medical device according to any one of claims 1 to 4, wherein the container is a dialyzer provided therein with a filter for removing toxins and water in blood.

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