JPS6252585B2 - - Google Patents

Description

[Detailed Description of the Invention] (1) Technical Field A fluid-tight connection between tubes can be made smoothly and easily, and the connection can be locked to prevent it from coming undone, and moreover, it can be used for continuous treatment for many years and a long period of time. The present invention relates to a tube connection structure for dialysis, infusion, and blood transfusion that prevents microorganisms from entering the tube even if the tube is disconnected and reconnected many times.

(2) Background Art In treatments such as dialysis, infusion, and blood transfusion, it is a technical issue to completely prevent microorganisms from entering the tubes when connecting tubes to tubes or connecting tubes to bags. this house,
In blood transfusion therapy, even if bacteria enter the blood vessel through the tube connection, white blood cells have the ability to phagocytose bacteria, so there is no major concern as long as the number of bacteria is small, but in dialysis, especially in peritoneal dialysis, bacteria In treating areas such as the abdominal cavity, which have no protective ability, it is an absolute technical challenge to reliably prevent bacteria from entering the tube. That is,
Compared to dialysis using an artificial kidney, the recent treatment method using peritoneal dialysis does not require large-scale equipment and equipment, and the treatment cost is significantly lower.The causes of peritoneal hemorrhage have been largely elucidated, and it is also more enjoyable. Treatment methods have been developed that can significantly reduce the burden on patients without the need for medical treatment, and a continuous ambulatory peritoneal dialysis method that allows patients to work while continuing treatment has been invented and is now being put into general practical use. It has been reviewed and is attracting attention.
The reliability of this dialysis method in terms of life safety depends on whether it is possible to reliably prevent the entry of bacteria into the tube and avoid the occurrence of peritonitis due to the proliferation of microorganisms within the peritoneum. It is said that this cannot be carried out for a long period of time.

As a specific example, a conventional ambulatory continuous peritoneal dialysis method will be described with reference to FIG. 1a. Patient M's abdominal hole 1
A catheter 2 is surgically implanted inside the body, and a connector 3 is attached to the external end of the catheter 2.
A connector 5 attached to one end of the transport tube 7 is connected to this connector 3. To inject the dialysate into the abdominal cavity 1, the bag 6 containing the dialysate is hung at a predetermined height higher than the abdominal cavity 1.
This is done by piercing the backing needle 11 attached to the tip of the transport tube 7 into the discharge port of the tube and loosening the clamp 10 attached halfway. After injecting the dialysate into the abdominal cavity 1, the patient can walk or work by closing the clamp 10, rounding the tube 7 appropriately, and attaching the bag 6 to the waist. To withdraw the dialysate from the abdominal cavity 1 after a predetermined period of time has elapsed, the tube 7 is extended, the bag 6 is placed on the floor, etc., and the clamp 10 is loosened. Then, by pulling out the bag needle 11 from the bag 6, making the bag 6 disposable, setting the next new bag 6 at a higher location, and inserting the bag needle 11 into the new bag 6, the second and subsequent dialysis can be performed.

However, when connecting the connectors 3 and 5 and the outlet of the bag needle 11 and bag 6 during the first and second dialysis sessions, an iodine-based disinfectant is currently used to prevent microorganisms from entering the tube. Disinfection procedures include instant immersion in a solution and wiping the tip of the bag needle thoroughly with disinfectant. A very small amount of the disinfectant in the solution enters the body and acts as a harmful substance, so it is not possible to make it highly concentrated, so a solution with an extremely low concentration is used.

Therefore, conventional disinfection procedures cannot be said to be sterile from a microbiological point of view, and in fact, infections from the connectors and bag needles occur about two months after dialysis begins, resulting in peritonitis. It has been reported that ambulatory continuous peritoneal dialysis is currently difficult to implement over a long period of time despite being an effective treatment as described above. It is being said.

However, as a result of intensive research, the inventor of the present invention found that the bag needle 11 was eliminated and the other end of the tube having the connector 8 at one end was directly connected to the bag 6 to form a drug solution container, as shown in FIG. 1b. They thought that sterilization could be ensured by using a tube 4 with connectors 5 and 9 on both ends and heating the connectors with the flame of an alcohol lamp to connect them. However, conventional back needle 11 connectors are not configured to be heated.

This invention has been devised in view of the above points.

(3) Disclosure of the Invention The general object of the present invention is to provide a connector that can be heated with an alcohol lamp flame to ensure sterilization, and that does not cause chemical changes such as rust or surface change due to heating, and a It is possible to heat the connector by hand-holding it without having to roll it up, it also ensures liquid tightness at the connection points between the connectors, and the heat transmitted through the connector due to heating causes the tube connected to the connector to shrink. To provide a connecting device for tubes for dialysis, infusion, and blood transfusion, which is improved so that a liquid-tight state at this location can be permanently ensured without causing changes such as expansion, and furthermore, the connection between connectors can be locked. It is something.

This invention is effective for peritoneal dialysis, which requires repeated connection and disconnection over a long period of time and has no ability to protect against bacteria. It is extremely effective for continuous ambulatory peritoneal dialysis that requires renewal. However, the present invention provides a tube connection device that can highly reliably prevent infection from the tube connection point used in a wide range of treatments including, but not limited to, infusion therapy and blood transfusion therapy. This is what I am trying to do.

A specific object of the present invention is to provide a tube made of a heat-resistant and corrosion-resistant material having a required length and having a male engagement part with a male insertion end formed at the connecting end of one of the tubes to be connected to each other. While the connecting end of the short tubular male connector is inserted into the connecting end of the other tube, a female engaging portion having a female-shaped insertion end that is inserted into the male engaging portion is provided at the connecting end of the other tube. The connecting end of a short tubular female connector made of heat-resistant and corrosion-resistant material with the required length is inserted and connected, and the connection between the male engaging part and the female engaging part is locked without screwing the connector. It is equipped with a locking mechanism made of heat-resistant and corrosion-resistant material, and a cylindrical support made of a heat insulating material such as silicone rubber, Teflon resin, cork, etc. is fitted on each of the tube sides of the above-mentioned connectors. An object of the present invention is to provide a connecting device for tubes for dialysis, infusion, and blood transfusion.

Furthermore, this invention includes a tube whose entire length is made of flexible heat-resistant silicone rubber, so that it will not be denatured or deformed by the heat of the connector heated for sterilization, and the number of manufacturing steps can be reduced.
In addition, in order to have heat resistance as well as reduce costs, we have added a tube in which only the required length of the end is made of silicone rubber, and the rest is made of low-cost vinyl chloride, polyethylene, etc. One of its secondary purposes is to prepare people. However, if the connector has extremely poor thermal conductivity, it may not be necessary to add silicone rubber.

In addition, this invention takes into account the strength, flexibility, and squeezing force of the cylindrical support body that is fitted and fixed to the connector in order to hand-support the connector that is heated for sterilization. In the case of a support made of silicone rubber, the support is placed on the outer surface of the end of the tube and squeezes the tube against the connector.
Another secondary purpose of the support material such as cork is to provide a support material that is fitted onto the outer surface of the connector halfway toward the tube, excluding the tube.

Another secondary object of the present invention is to enable connection by a tapered cylindrical surface or an annular seal member in order to ensure liquid tightness at the connection points between connectors.

Furthermore, this invention provides a wide range of locking mechanisms that can be easily locked without twisting the tube, in order to prevent the patient from being in danger due to the connection between the connectors being accidentally disconnected without the patient's knowledge. Another secondary purpose is to provide the information in various ways.

(4) Best Mode for Carrying Out the Invention (4-1) Configuration As shown in FIG. , 12 at least each connecting end 11 of
a, 12a, at least the required length l is made of heat-resistant silicone rubber, and one of the tubes 1
The connecting end 11a or 12a of 1 or 12 has a male engaging part 13a formed with a male insertion end, and is made of a corrosion-resistant material such as ceramic, stainless steel, or titanium and has a required length, preferably 3 cm to 5 cm. The outer surface of the short tubular male connector 13 is fitted with a labyrinth-shaped (or tapered in diameter toward the end surface) shaped tube-to-tube connection end 13b, while the other tube 12 or 11 is connected. A short tubular female connector 14 made of a heat-resistant and corrosion-resistant material such as ceramic, stainless steel, or titanium and having the required length, preferably 3 cm to 5 cm, has the male engaging portion 14a at the connecting end 12a or 11a of the connector.
The tube-to-tube connection end 14b of the connector 13 is fitted and connected, and furthermore, the connector 13 is provided with an appropriate locking mechanism R capable of locking the connection between the male engaging portion 13a and the female engaging portion 14a without screwing the connector. , 14 are fitted with a cylindrical support 15 made of a heat insulating material on each side of the tube, and the material of both connectors and the locking mechanism is determined to be heat-resistant and corrosion-resistant. This is to enable the connector to be connected while being sterilized by flame in order to prevent peritonitis due to the invasion of bacteria, and the cylindrical support and heat insulating material are heated with an alcohol lamp, etc. This is because both connectors become hot and it would be a problem if you could not hold the connectors in your hand. or,
When the material is limited to ceramics such as zirconia, it has high heat resistance and low thermal conductivity, so the tube is not limited to silicone rubber, and vinyl chloride etc. can also be used, and the support is not necessary for heat insulation purposes. There are effects unique to each material, such as not

The tubes 11 and 12 may be made of silicone rubber over their entire length, or may be made of silicone rubber for the required length from the connecting end, and the rest made of a soft non-heat resistant material such as vinyl chloride or polyethylene. It may also be a combination of the above. The support body 15 shown in FIG. 2 is made of silicone rubber, and is fitted onto the tubes 11 and 12 in advance. However, the support 15 was moved so as to hide it on the outer surface of the fitting end of this tube, overlapped, and forcibly fitted, but as shown in Nos. 3a and 3b, the support 15 was hardly flexible compared to silicone. If the connector is made of Teflon resin or cork with low tensile strength, use adhesive to connect it to connector 1.
3, 14 or tube 1 forcibly fitted to this
It may be fitted and fixed to the fitting ends 11b and 12b of Nos. 1 and 12.

The male and female connectors 13 and 14 may be connected as long as the male and female engaging portions 13a and 14a can be inserted straight and fitted in a liquid-tight manner, but preferably the fourth It may be formed into a pair of tapered cylindrical surfaces 16, male and female, which can be connected to each other while maintaining a liquid-tight fit as shown in Figure a, or as shown in Figure 4 b, c,
As shown in d, a sealing member such as an O-ring 17 or a disc spring-shaped gasket 18 that can maintain a liquid-tight fit by contacting the end surface or fitting onto the outer surface of the male engaging portion 12 is attached to the female connector 14. It may be attached within the engaging portion 14a.

Also, the male engaging portion 13a of the male connector 13
The locking mechanism R capable of locking the connection by insertion and fitting of the female engaging portion 14a of the female connector 14 must have a structure that can lock the connectors 13 and 14 without screwing. Since various aspects can be considered, modifications will be described later.

(4-2) Function We will now explain the ambulatory continuous peritoneal dialysis shown in Figure 1, and in Figure 2, tube 11 is an extension tube connected to a Tenkoff catheter implanted in a patient. 4 and the tube 12 is assumed to correspond to the transport tube 7 connected to the bag. To renew dialysis, the bag and transport tube 12 are disposable, so the locking mechanism R is disengaged and then the male engagement part 13a and the female engagement part 14a are disengaged. Before disengaging the engagement, first suspend the new bag at a high place, disinfect and connect the new transport tube 12 to it, and connect the new transport tube 12 to the new bag.
The patient holds the supporting part 15 of the female connector 14 at the tip with one hand, heats the female engaging part 14a moderately with the flame of an alcohol lamp, and then holds the supporting part 15 of the female connector 14 at the tip with the other hand or with both hands while holding the new spare part. The liquid feed tube 1 that is currently connected as above
1 from the extension tube 11 right above the flame of the alcohol lamp, and immediately disconnect the male engaging part 13a of the male connector 13 connected to the extension tube 11 from the alcohol lamp. After being heated appropriately with a flame, the female connector 14 is inserted and fitted into the female engaging portion 14a of the female connector 14 connected to the new transport tube 12, and the locking mechanism R is inserted again.
By locking the connection between the connectors 13 and 14, it is possible to completely prevent bacteria from entering the tube, thereby completely eliminating the occurrence of peritonitis caused by bacteria entering from the connector portion. can. Since the connectors 13 and 14 are heat resistant and corrosion resistant, chemical changes such as rust and surface changes do not occur even when heated. And connector 1
When the engaging parts 13a, 14a of the connectors 13, 14 are heated with the flame of an alcohol lamp, the tube side ends of the connectors 13, 14 become hot, but the support 1 is attached to these parts.
5, the patient can hold the connectors 13 and 14, and the support 15
Because the diameter of the tube is large, it is easy to hold and can be supported stably, allowing for good heating.Also, since the tubes 11 and 12 in this part are made of silicone rubber, the tube does not absorb the heat transferred to the connectors 13 and 14. There is no deformation or denaturation due to heat such as shrinkage, expansion, brittleness, or melting, and therefore there is no leakage of dialysate from the fitting connection between the tube and connector, making it possible to sterilize by heating. This tube connection can only be achieved without any heat effect on the tube.

(5) Modified Embodiments FIGS. 5 to 15 show various combinations of the connection by plug-fitting between connectors, which is the essential part of this invention, and the locking mechanism that can lock this connection.

In FIGS. 5a and 5b, male and female engaging portions 13a and 1
4a is connected by a liquid-tight fit using a tapered cylindrical surface 16, and the locking mechanism R is connected to one of the engaging portions 1.
A thread 19 is cut on the outer surface of 3a or 14a, and a flange 20 is provided on the other engaging portion 14a or 13a, and the flange 20 is attached to the other engaging portion 13a or 14a.
A nut 21 that can be screwed into the screw 19 by pressing against the nut 21 is fitted therein (Claim No. 8
section).

In FIG. 6, the liquid-tight connection is made by an O-ring 17, and the locking mechanism is provided by both engaging portions 13a, 1.
Attraction by magnet rings 22, 22 attached to the end faces of 4a so as to face each other, and female engaging portion 1
This is accomplished by screwing together a nut 23 fitted into the male engaging portion 13a and a screw 24 formed in the male engaging portion 13a (Claim 8).

In FIG. 7, the liquid-tight connection is achieved by insertion through the tapered cylindrical surface 16, and the locking mechanism R has a flange 2 on the outer surface of the male engaging portion 13a of the male connector.
5, a tightening nut 26 having a male thread 26a on the side opposite to the connector connection side of the collar 25 is rotatably fitted, and a female thread capable of engaging with the male thread 26a is provided in the female engaging portion 14a of the female connector. 50 (Claim 9).

In FIG. 8, the liquid-tight connection is a liquid-tight fit using the tapered cylindrical surface 16, and the locking mechanism R has flanges 27, 27 on both engaging portions 13a, 14a, respectively.
and a specially shaped lock pin 28 which can be integrally clamped onto both connectors from a direction perpendicular to the joint direction after connection and which can abut against the opposing surfaces of the pair of opposing flanges 27, 27. Claim 10).

In FIG. 9, the liquid-tight connection is made by the tapered cylindrical surface 16, and the locking mechanism R is connected to the male engaging portion 1.
3a is provided with an annular groove 29 in the circumferential direction, and an O-ring 30, preferably made of metal, is provided in the female engaging portion 14 and has a locking function by fitting into the groove 29.
(Claim No. 11)
section).

In FIG. 10, the liquid-tight connection is made by a tapered cylindrical surface 16, and the locking mechanism R has an L-shaped slit 31 formed on the outer or inner surface of the female engaging portion 14a of the female connector from its end surface. The slit 31 is formed on the outer surface of the male engaging portion 13a of the male connector.
An L-shaped protrusion 32 is formed that can be inserted into and engaged with the protrusion 32 (Claim 12).

In FIG. 11, the liquid-tight connection is a liquid-tight fit using the tapered cylindrical surface 16, and the locking mechanism R is provided with an annular groove 33 in the circumferential direction on the outer surface of the male engaging portion 13 of the male connector. , a leaf spring 34 having a protrusion 34a that can fall into this groove 33 and lock when connected.
is attached to the inner surface of the female engaging portion 14a of the female connector (Claim 13).

In FIG. 12, the liquid-tight connection is made by male and female tapered cylindrical surfaces 16, and the locking mechanism R has a protrusion 35 on the outer surface of the male engaging portion 13a of the male connector.
A recess 36 is provided on the inner surface of the female engaging portion 14a of the female connector for the female connector to fall into and lock (Claim 14).

In FIG. 13, the liquid-tight connection is made by an O-ring 17, and the locking mechanism R is provided with a flat collar 37 on the outer surface of the male engaging portion 13a of the male connector.
The female engaging portion 14a of the female connector is formed to allow the flange 37 to enter therein, and the flange 37 is formed on the end surface of the female engaging portion 14a of the female connector depending on the circumferential positional relationship of the protrusion 37. An escape prevention plate 38 having a notch shape (not shown) that selectively allows entry into and escape from the female engaging portion 14a is attached (Claim 15). The O-ring 17 is supported and housed so as to be slidable in the insertion direction while being in close contact with the inner surface of the female engaging portion 14a over the entire circumference by the presser ring 39, and is further abutted against the inner surface of the escape prevention plate 38 by the coil spring 40. When the male engaging part 13a of the male connector is pushed into the female engaging part 14a of the female connector and twisted slightly, the end face of the male engaging part 13a comes into contact with the gasket 17, creating a liquid-tight state. The connection is made so that the peripheral surface of the collar 37 stably engages with the inner surface of the hole of the female engaging portion 14a.

In FIG. 14, the liquid-tight connection is made by an O-ring 17, and the locking mechanism R is provided with an annular groove 41 in the circumferential direction of the outer surface of the male engaging portion 12 of the male connector 13, and A conical hole 42 is provided on the outer surface of the female engaging portion 14a of the connector,
The groove 4 protrudes inward from the bottom of the conical hole 42.
A ball 43 that can engage with the ball 4 is inserted, and this ball 4
3 toward the bottom of the conical hole 42
A lock ring 44 formed with an inner surface of the ball 43 is fitted so as to cover the ball 43, and the lock ring 44 is inserted into the end surface so that the ball 43 is pressed against the bottom of the conical hole 42 by the claw 44a of the lock ring 44. A coil spring 45 that can be biased in the direction is housed inside the lock ring 44 (claim 16).
section). Therefore, in order to connect, slide the lock ring 44, insert the male engagement part 13a into the female engagement part 14a, and release the lock ring 44 to establish a liquid-tight connection and lock.

In FIG. 15, a liquid-tight connection and a locking mechanism R are achieved at the same time, and the male engaging part 1 of the male connector
A groove joint is formed by forming an annular groove 46 recessed in the axial direction of the thick inner joint from the end face of the groove 3a, and by forming this groove 46 with a male taper cylindrical surface 46a and a larger female taper cylindrical surface 46b. The axial cross section is formed into a wedge shape that tapers toward the depth, and correspondingly, the female engaging portion 14a of the female connector has its inner and outer surfaces aligned with the groove 4.
6 (Claim 17).

(6) Application Example FIG. 16 is an example of an extension tube for continuous ambulatory peritoneal dialysis provided by implementing the tube connector of the present invention. This extension tube 4 is equipped with a male connector 13 and a female connector 14 at both ends, and the required length l of the end connected to each connector 13, 14 is made of silicone rubber, and the tubes 4a, 4b are made of silicone rubber. The tube 4c is made of polyvinyl chloride.To add the tubes, both tubes are fitted into a short hard pipe 47 for addition, which has a large diameter in the middle of the outer surface, and one of the tubes is fitted in advance. This is done by shrinking the tube 48 by moving a heat-shrinkable sealing tube 48 fitted over the tube so as to hide the joint and heating it.The flow clamp 10 is connected to the tube 4c, and each Connector 13, 14
The support members 15 and 15 are forcibly fitted over the tubes 4a and 4b, respectively, and also have nuts that serve as a locking mechanism R. In order for this extension tube 4 to be used, it goes without saying that the connector attached to the mating tube must also have a corresponding male engagement part or female engagement part for connection.

(7) Effects As explained above, the dialysis use of this invention,
Connectors for tubes for infusions and blood transfusions, at least the ends of the tubes that are continuous with the connectors are made of silicone rubber, the connectors to be connected to each other are made of metal, and the connectors are male/female plug-in fittings. Furthermore, the connection between the connectors is locked by a locking mechanism, and a support made of a heat insulating material is fitted onto the tube side of each connector.

Therefore, if a medical device employing the tube connector of the present invention is used for treatment, in order to renew the treatment, the connectors can be disconnected and the connector of the new tube connected to the connector of the tube that is still being used. An alcohol lamp may be By lighting a fire and heating the engaging part of the connector, sterilization can be ensured.
Particularly in the treatment of body parts that have no antibacterial activity, such as peritoneal dialysis, there is no complication of peritonitis caused by bacteria entering from the connector, and the treatment method using the tube connection structure of this invention can be used in a wide range of treatments. The reliability of life safety has increased markedly, but it has been difficult to implement it for a long period of time because it cannot prevent bacteria from entering through the connector, as exemplified by peritoneal dialysis, which has been practiced to this day. This has the excellent effect of completely removing the barrier. Moreover, according to this invention, the operation of disconnecting and reconnecting is extremely easy.
It can be done with one hand, can be easily done by the patient without the help of a doctor, and has the effect of ensuring sterilization, making it ideal as a tube connection device for ambulatory continuous peritoneal dialysis.

Furthermore, according to this invention, the connector is limited to being made of heat-resistant and corrosion-resistant materials such as ceramics, stainless steel, and titanium, so it can withstand long-term use without causing any chemical change or deformation even when exposed to direct exposure to the flame of an alcohol lamp. Reliability is increased, and since the tube that connects to the connector is made of silicone rubber, it can be forcibly fitted to the connector with sufficient strength, and there is no change in the connector due to heat transmitted from the connector such as shrinkage, expansion, melting, or softening. This has the effect of ensuring a good liquid-tight fit between the tube and the tube.

In addition, according to the present invention, each connector is attached with a support made of a heat insulating material, so it is easier to operate than the case where the connector must be rolled up and held using cloth etc. However, it can be operated very easily and without errors, ensuring sterilization. Further, according to the present invention, since the connectors are connected by plug-in fitting, the patient can operate the connectors with one hand, and the locking operation after plug-fitting can be performed smoothly. If the connectors are not connected by plug-in fitting, that is, if the connectors are brought into contact with their ends and locked with a nut, it may be difficult for the patient to connect the connectors themselves. However, this does not occur with the present invention. However, the connection between the connectors according to the present invention is a plug-in fit, and the screw connection is employed in the locking mechanism, and the connection can be made without twisting the tube, so the connection between the connectors is easy. The locking mechanism is not easily disengaged by itself due to twisting of the tube, which causes a moment to return, and in this respect, it can be suitably employed in ambulatory continuous peritoneal dialysis. In other words, in ambulatory continuous peritoneal dialysis, it must be assumed that external forces such as tension, compression, and moment act on the tube, but in this invention, the tube is locked without twisting, so the tube is completely unnoticed by the patient. There is almost no possibility that the connector will come undone on its own. If the tubes are connected by simple plug-in fitting without a locking mechanism, or if the tubes are connected by twisting the tubes to lock them, there is a high possibility that the connection will come undone naturally. This must be avoided in view of the safety of the patient's life, and in the latter case it is necessary to strongly lock the lock, but it becomes difficult to release the lock. Therefore, according to the present invention, the reliability of treatment methods and instruments is increased.

In addition, as an embodiment of the present invention, if the entire length of the tube is made of silicone rubber, the appearance will be sleek and there will be no seams, and fewer manufacturing steps will be required.Also, the required length of the end of the tube will be made of silicone rubber and the rest will be made of vinyl chloride, etc. Since silicone rubber is expensive, this has the added effect of reducing manufacturing costs.

Further, as an embodiment of the present invention, when the support body is made of silicone rubber and is forcibly fitted to the outer surface of the fitting part of the tube fitted into the connector,
Although silicone rubber does not have heat shrinkage or heat fusion properties as a physical property, it is elastic and has high tensile strength, so the support can be easily attached to the connector, and the tightening action of the support allows silicone rubber to be used. The fitting of the tube to the connector becomes even stronger, and if the support is made of Teflon or cork and fixed with adhesive to the connector or the fitting end of the tube fitted into the connector, Teflon has almost no elasticity, and cork has elasticity but low tensile strength, which has the added effect of ensuring proper and good installation.

Further, as an embodiment of the present invention, the connectors may be connected by insertion fitting and not by end-face contact, but by fitting by a tapered cylindrical surface or by an annular sealing member such as an O-ring or a disc spring-shaped packing. In this case, there is an added effect that the reliability of liquid-tight fitting between the connectors is further increased. Furthermore, as an embodiment of the present invention, the various locking mechanisms specifically provide a wide range of structures to ensure a straight plug-in fit between the male and female connectors.

[Brief explanation of the drawing]

FIG. 1a is a conceptual diagram for explaining the ambulatory continuous peritoneal dialysis currently practiced. FIG. 1b is a conceptual diagram for explaining the present invention. 2 to 15 relate to the tube connector for dialysis, infusion, and blood transfusion according to the present invention. Fig. 2 is a partially sectional front view, Figs. 3 a and b are partially sectional front views showing modified examples of mounting the support, and Figs. 4 a, b, c, and d are liquid-tight Cross-sectional view illustrating a modified example for ensuring connection, No. 5
Figures 1 through 15 are cross-sectional views illustrating various combinations of liquid-tight connections and locking mechanisms for locking the connections. FIG. 16 is a partially sectional front view showing an extension tube for ambulatory continuous peritoneal dialysis in which the tube connector of the present invention is implemented. 11, 12...tube, 13...male connector, 13a...male engaging part, 13b...tube connection end, 14...female connector, 14a...female engagement part, 14b...tube connection end , 15...Support body, R...Lock mechanism, 16...Tapered cylindrical surface, 17...O ring, 18...Disc spring-shaped packing, 19...Screw, 20...Brim, 21...Nut, 22 ...Magnetic ring, 23...Natsuto, 24
...screw, 25 ... collar, 26 ... tightening nut,
26a...screw, 30...O-ring, 31...slit, 32...protrusion, 33...groove, 34...leaf spring, 34a...protrusion, 35...protrusion, 36...
Recessed portion, 37... tsuba, 38... O-ring, 41...
Groove, 42... Conical hole, 43... Ball, 44...
Lock ring, 44a...wedge claw, 45...coil spring, 46...ring groove.

Claims (1)

[Scope of Claims] 1. A short tube made of heat-resistant and corrosion-resistant material having a required length and having a male engagement part formed with a male insertion end at the connecting end of one of the tubes to be connected to each other. The connecting end of the tubular male connector is fitted into the connecting end of the other tube, and the connecting end of the other tube has a female engaging part having a female-shaped insertion end that is inserted into the male engaging part. A heat-resistant connector that can fit and connect the connecting end of a short tubular female connector made of heat-resistant and corrosion-resistant material of the required length to the tube, and further lock the connection between the male engaging part and the female engaging part without screwing.・
A tube for dialysis, infusion, and blood transfusion, characterized in that it is equipped with a locking mechanism made of a corrosion-resistant material, and that a cylindrical support made of a heat insulating material is fitted on each of the tube side of the above-mentioned connectors. connectors. 2. A connecting device for tubes for dialysis, infusion, and blood transfusion according to claim 1, wherein the tubes to be connected to each other are made of silicone rubber over their entire length. 3. The tubes to be connected to each other are made of silicone rubber for the required length from the connecting end, and the remaining part is made of a soft non-heat resistant material such as vinyl chloride or polyethylene. A tube connector for dialysis, infusion, and blood transfusion according to item 1. 4. The dialysis and infusion fluid according to claim 1, wherein the support is made of silicone rubber, and is overlaid and forcibly fitted on the outer surface of the fitting part of the tube that is forcefully fitted into the connector. Tube connections for medical and blood transfusions. 5 The support is made of Teflon or cork,
A connecting device for tubes for dialysis, infusion, and blood transfusion according to claim 1, characterized in that this is fitted and fixed to a connector or a fitting end of a tube forcibly fitted to the connector with an adhesive. . 6 The male and female engaging parts of the male and female connectors each have male and female connectors that can be connected to each other while maintaining a liquid-tight fit.
2. A tube connector for dialysis, infusion, and blood transfusion according to claim 1, characterized in that the connector is formed with a pair of female tapered cylindrical surfaces. 7.Insert a sealing material such as an O-ring or disc spring type packing into the female connector's female connector that can maintain a liquid-tight fit by contacting the end surface or fitting onto the outer surface of the male connector's male connector. A connecting device for a tube for dialysis, infusion, and blood transfusion according to claim 1, wherein the connection device is attached to a tube for dialysis, infusion, and blood transfusion. 8. Claim 1, characterized in that the lock mechanism is formed by fitting a nut on the outside of one of the engaging parts, and forming a screw on the other engaging part into which the nut can be screwed. Tube connections for dialysis, infusion and blood transfusion as described. 9. The locking mechanism is provided with a flange on the outer surface of the male engaging part of the male connector, a tightening nut having a male thread on the opposite side of the flange is rotatably fitted, and the locking nut is rotatably fitted inside the female engaging part of the female connector. 2. A tube connector for dialysis, infusion, and blood transfusion according to claim 1, characterized in that the tube is provided with a female thread that can be screwed together with the female thread. 10 The locking mechanism is provided with a flange on each of the male and female engaging parts, which can be integrally clamped to both connectors from a direction perpendicular to the joint direction after connection, and which is arranged in the opposite direction of the pair of opposing flange parts. A connecting device for tubes for dialysis, infusion, and blood transfusion according to claim 1, characterized in that it comprises a locking pin of a special shape that can come into contact with a surface. 11 The locking mechanism is constructed by providing an annular groove in the circumferential direction of the outer surface of the male engaging part, and irremovably housing an O-ring that fits in the groove and has a locking function in the female engaging part. A connecting device for tubes for dialysis, infusion, and blood transfusion according to claim 1. 12 The locking mechanism is formed by forming an L-shaped slit on the outer surface or inner surface of the female engaging portion of the female connector from the end surface thereof, and engaging the male connector by inserting the L-shaped slit into the outer surface of the male engaging portion of the male connector. Claim 1 characterized in that the projection is formed by forming a protrusion to obtain
Connecting devices for tubes for dialysis, infusion, and blood transfusion as described in Section 1. 13 The locking mechanism is provided with an annular groove in the circumferential direction on the outer surface of the male engaging part of the male connector, and a leaf spring having a protrusion that can fall into this groove and lock at the time of connection is inserted into the inner surface of the female engaging part of the female connector. A connecting device for a tube for dialysis, infusion, and blood transfusion according to claim 1, which is attached to a tube. 14 A patent characterized in that the locking mechanism is provided with a protrusion on the outer surface of the male engaging part of the male connector, and a recessed part is provided on the inner surface of the female engaging part of the female connector into which the protrusion can fall and lock. A tube connector for dialysis, infusion, and blood transfusion according to claim 1. 15 The locking mechanism is provided with a flat flange on the outer surface of the male engaging part of the male connector, a flat flange on the outer surface of the female engaging part of the female connector, and a flat flange formed to allow the flange to enter. The patent claim is characterized in that an escape prevention plate is attached having a cutout shape that selectively allows the collar to enter or leave the female engagement portion depending on the positional relationship in the circumferential direction of the collar. A tube connector for dialysis, infusion, and blood transfusion according to item 1. 16 The locking mechanism is provided with an annular groove in the circumferential direction of the outer surface of the male engaging portion of the male connector, a conical hole penetrating the outer surface of the female engaging portion of the female connector, and an annular groove extending inward from the bottom of the conical hole. A ball that can protrude and engage with the groove is inserted, and a lock ring formed with a wedge claw on the inner surface that can push the ball toward the bottom of the conical hole is fitted so as to hide the ball. The dialysis device according to claim 1, further comprising a coil spring housed inside the lock ring, which can bias the lock ring in the direction of the inserted end surface so as to press the ball against the bottom of the conical hole. Connections for tubes for use, infusions, and blood transfusions. 17 The locking mechanism has an annular groove recessed in the axial direction of the thick inner joint from the end face of the male engaging part of the male connector, and the cross section in the axial direction of the joint is formed into a wedge shape that tapers into a double taper toward the deep end. A patent characterized in that the female engaging part of the female connector is formed into a double taper on its inner and outer surfaces so that its cross section in the joint direction becomes wedge-shaped so that it becomes narrower toward the end face and can fit into the groove. For dialysis according to claim 1,
Tube connections for infusions and blood transfusions.