JPH0331304Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a medical joint cap, and more specifically, to a medical joint cap that is attached to a joint portion of a medical tube.

[Prior art and problems to be solved by the invention] Conventionally, when performing hemodialysis, for example, a joint used to connect a tube on the side of a syringe needle placed in a vein and a tube on the side of a dialyzer includes:
Typically, a medical fitting cap is attached to keep the fitting chemically and biologically clean.

By the way, conventionally, as shown in FIG. 2, one end of the first cap 3 is fitted into the joint 2 on the side of the medical tube 1, and the other end is fitted into the second cap 6. cap is known.

However, when cleaning the liquid flow path of the medical tube 1 or the like prior to connection with the tube on the injection needle side, the second cap 6 is temporarily removed from the first cap 3. After that, for example, physiological saline is poured from the medical tube 1 side to the medical tube 1.
and the like, and then, while flowing physiological saline into the liquid flow path of the medical tube 1, etc., the second cap 6 is reattached to the first cap 3, thereby filling the liquid flow path with physiological saline. The complicated work of preparing for connection with the tube on the side of the injection needle has been forced.

In addition, in such a medical joint cap, as described above, as the work of attaching and detaching the second cap 6 from the first cap 3 is frequently performed, the purpose of preventing powder loss of the second cap 6 is to Usually, the first cap 3 and the second cap 6 are connected to each other by a connecting member 13, and as a result, the second cap 6 is connected to the vicinity of the opening of the first cap 3 due to the quirk of the connecting member 13. so that the first
The saline flowing out from the opening of cap 3 is
A new inconvenience has arisen in that the liquid hits the second cap 6 and scatters, contaminating the bedside, for example.

In addition, in the conventional medical joint cap, one end of the liquid flow path is closed by the second cap 6, so when gas sterilizing the liquid flow path portion before commercialization, the liquid flow path is The parts could not be sufficiently sterilized.

Therefore, in order to eliminate this inconvenience, a slight gap 14 is provided between the fitting surfaces of the first cap 3 and the second cap 6, thereby making it possible to sterilize even the inside of the medical joint cap. Although medical coupling caps are also known, the gap 1
4, when filling the liquid flow path with physiological saline and preparing for connection with the tube on the injection needle side, the medical tube must be clamped to prevent liquid leakage from the gap 14. This method has the disadvantage that the liquid flow path may be contaminated with, for example, bacteria from the gap 14 until it is connected to the tube on the side of the injection needle.

This invention was made in consideration of the above circumstances.

The purpose of this invention is to be able to easily and sufficiently sterilize the liquid flow path, and when used, to clean the liquid flow path without contaminating the bedside. To provide a medical coupling cap that does not cause liquid leakage even without clamping the medical tube between the cleaning and the connection with the tube on the injection needle side, and also prevents the liquid flow path from being contaminated. .

[Means for Solving the Problem] The device according to claim 1 for solving the problem has a connecting end that is open on one side so as to be connectable to a joint of a medical tube, and an open end that is open on the other side. a first tubular cap having a first cap having a mounting end portion that is opened to allow stepwise mounting to the open end portion on one side, and a sealing means for sealing the opening of the open end portion and a through hole on the other hand. and a second cap having a
The medical joint cap is characterized in that the opening of the open end can be sealed or opened by gradually attaching the second cap to the first cap.

The device according to claim 2 is the medical joint cap according to claim 1, wherein the sealing means is a protrusion that can be tightly fitted into the opening of the open end.

The device according to claim 3 is the medical joint cap according to claim 1, wherein the sealing means is a flat surface that seals the opening at the open end.

In other words, the medical coupling cap of this invention is
It consists of a first cap and a second cap.

The first cap has a connecting end portion on one side that can be liquid-tightly connected to a fitting of a medical tube, and an opening on the other side that allows a second cap, which will be described later, to be installed in a liquid-tight manner in stages. Has an end.

Further, the first cap has a tubular shape having a liquid flow path in its core portion that allows fluid to flow between the joint side of the medical tube and the second cap side, which will be described later.

The second cap has one end that opens to the open end of the first cap so that it can be installed in a liquid-tight manner and in stages, and the other end has a When the sealing means for sealing the opening of the open end and the medical joint cap of this invention are attached to a joint of a medical tube, for example, a liquid is caused to flow from the joint side through the first cap. and a through hole through which the liquid can be discharged to the outside of the medical coupling cap of the present invention.

[Function] In the medical joint cap of this invention, the joint of the medical tube and the joint end of the first cap are liquid-tightly joined, and the second cap is attached to the open end of the first cap. The ends are connected in a fluid-tight manner and for gradual installation.

In this case, the opening at the open end is not sealed by the sealing means of the second cap.

In the medical joint cap of this invention, when cleaning the liquid flow path of the joint, medical joint cap, etc., for example, physiological saline for cleaning is supplied from the joint side via the medical tube. The liquid flows into the second cap while cleaning the liquid flow path of the first cap.

Then, the physiological saline in the second cap is
While cleaning the inside of the second cap, it is discharged from the through hole of the second cap to the outside of the medical joint cap, completing the cleaning.

In this way, with the medical joint cap of this invention, there is no need to remove the second cap from the first cap, so the liquid flow path of the medical tube etc. can be cleaned without scattering the physiological saline. and drain it out of the medical fitting cap.

In addition, when the medical coupling cap of this invention is to be sterilized, for example, by gas, it is possible to sterilize the inside from both the joint end side of the first cap and the through hole side of the second cap. Therefore, the liquid flow path of the medical coupling cap can be sufficiently sterilized.

In addition, in the medical joint cap of this invention, when filling the liquid flow path with physiological saline and preparing for connection with the tube on the injection needle side, the second cap is filled with physiological saline while flowing into the liquid flow path. is moved in the direction of the first cap.

At this time, since the opening at the open end of the first cap is sealed by the sealing means provided on the second cap, the liquid flow path can be filled with saline without the need to clamp the medical tube. This can prepare for connection with the tube on the injection needle side.

Note that since the opening at the open end is sealed as described above, there is no risk that the liquid flow path or the outer peripheral surface of the open end will be contaminated from the outside.

In the medical joint cap of this invention, when connecting to the tube on the injection needle side, the second cap is removed from the first cap, and then the open end of the first cap is fitted to the joint side. This is done by

[Example] Next, an example of this invention will be described in more detail with reference to the drawings.

As shown in FIG. 1, the medical coupling cap of this embodiment consists of a first cap 3 and a second cap 6. As shown in FIG.

As the materials for the first cap 3 and the second cap 6, known materials conventionally used for medical joint caps can be suitably employed, but among these, more preferred are:
It is a soft elastic body.

Examples of the soft elastic body include silicone rubber, butyl rubber, butadiene rubber, ethylene propylene rubber, and soft vinyl chloride.

Note that in this example, butadiene rubber was used.

The first cap 3 has a coupling end 4 on one side that can be fitted in a liquid-tight manner with the fitting 2 of the medical tube 1, and has a second cap 6 on the other side that can be fitted in a liquid-tight manner and in stages. It has an open end 5 that can be attached.

Note that the fitting state is not particularly limited as long as the fitting 2 of the medical tube 1 and the connecting end 4 of the first cap 3 can be tightly connected, and the fitting state is not particularly limited as shown in FIG. 1. The fitting 2 of the medical tube 1 may be inserted into the opening of the coupling end 4, as shown in FIG. It may be.

The first cap 3 has a tubular shape having a flow path on one side that allows communication between the joint 2 side of the medical tube 1 and the second cap 6 side, which will be described later.

The shape of the flow path of the first cap 3 is not particularly limited as long as it allows flow between the joint 2 side of the medical tube 1 and the second cap 6 side, which will be described later.

The second cap 6 has on one side a mounting end 7 which can be mounted in a liquid-tight manner onto the open end 5 of the first cap 3 in stages.

The stepwise mounting is not particularly limited as long as it has a structure that allows the second cap 6 to be moved toward the first cap 3. For example, as shown in FIG. The opening end 5 and the mounting end 7 may fit together, or the opening end 5 and the mounting end 7 may fit together.
They may be screwed together.

The second cap 6 has a sealing means 9 at the other end for sealing the opening of the open end 5 and the liquid flow path of the medical joint cap of this invention.
For example, it has a through hole 8 for discharging physiological saline to the outside of the medical joint cap.

The sealing means 9 can seal the opening of the open end 5 when the second cap 6 is moved toward the first cap 3 and installed, and can seal the opening of the open end 5 in the direction of movement. On the other hand, there is no particular limitation as long as it has a structure that allows the opening of the open end 5 to be opened when the second cap 6 is moved and attached in the opposite direction.

As the sealing means 9, as shown in FIG. 1, it is preferable to use a protrusion provided on the end surface of the second cap 6, or to use the end surface of the second cap 6 itself as the means. be.

In addition, in the medical joint cap of this embodiment, as described above, the second cap is connected to the first cap 3.
In order to make it easier to recognize and judge whether the opening of the open end 5 is sealed or opened when the cap 6 is moved and attached, a cap is provided on the outer circumferential surface of the open end 5 of the first cap 3. Engaging means consisting of a first recess 11 and a second recess 12 provided to engage with the outer flange 10 and the inner peripheral surface of the mounting end 7 of the second cap 6 are formed.

That is, as shown in FIG. 1, when the second cap 6 is moved in the direction of the first cap 3 and the opening of the open end 5 is sealed by the sealing means 9, the outer Flange 10 and the recess 1
1 are engaged with each other, and the sealing is determined by perceiving the state by touch, while moving the second cap 6 in a direction opposite to the moving direction,
When the opening of the opening end 5 is opened, the outer flange 10 and the recess 12 engage with each other, and the opening is determined by perceiving this state by touch.

The engaging means may include an inner flange provided on the inner circumferential surface of the mounting end 7 and a recess provided on the outer circumferential surface of the open end 5 to engage with the inner flange. Good too.

In any case, when the second cap 6 is moved and attached to the first cap 3, the engagement means seals or opens the opening of the open end 5, for example, by a tactile sensation. There is no particular restriction as long as it has a structure that can be recognized.

The through hole 8 has a function of discharging liquid such as physiological saline existing in the medical joint cap to the outside of the medical joint cap when the opening of the open end 5 of the first cap 3 is open. There are no particular restrictions on the number, shape, etc., as long as they have the following.

The position where the through hole 8 is provided is not particularly limited as long as it does not impede the function of the through hole 8 or the purpose of the present invention. Examples include the peripheral surface of the second cap 6.

A preferred location for providing the through hole 8 is the end face of the second cap 6, as shown in FIG.

In the medical coupling cap of this example,
As shown in FIG. 1, the first cap 3 and the second cap 6 are connected so that they can be attached in stages.

In the medical joint cap of this embodiment, the first cap 3 and the second cap 6 are connected by a connecting member 13, as shown in FIG.

The connecting member 13 may be obtained by integrally molding the first cap 3 and the second cap 6 when the first cap 3 and the second cap 6 are molded, or may be obtained by integrally molding the first cap 3 and the second cap 6. 2nd cap 6
It may be constructed from a separate member.

Note that when the first cap 3 and the second cap 6 are attached in stages by screwing, the connecting member 13 is constituted by a separate member from the second cap 6, and A state where rotation is not inhibited, for example, the second cap 6 and the connecting member 1
3 can also be attached to the circumferential surface of the second cap 6 in a rotatable state.

The medical joint cap of this embodiment is used by fitting the joint end 4 of the first cap 3 into the joint 2 of the medical tube 1.

In the medical joint cap of this embodiment, when cleaning the liquid flow path of the medical tube 1 etc., for example, physiological saline for cleaning is caused to flow from the joint 2 side via the medical tube 1.

At this time, the first cap 3 and the second cap 6 are held in a state in which the opening of the open end 5 is kept open by the stopper.

The physiological saline reaches the inside of the second cap 6 while cleaning the liquid flow path of the first cap 3, and then flows through the through hole 8 of the second cap 6 to the medical joint while cleaning the inside of the second cap 6. It is ejected outside the cap.

In this manner, in the medical joint cap of this invention, there is no need to remove the second cap 6 from the first cap 3, so that the physiological saline can be used in the liquid flow path of the medical tube 1 etc. without scattering. while cleaning it and draining it out of the medical fitting cap.

In addition, when the medical joint cap of this invention is to be sterilized, for example, by gas, sterilization is performed both from the fitting end 4 side of the first cap 3 and from the through hole 8 side of the second cap 6. Therefore, the liquid flow path of the medical coupling cap can be sufficiently sterilized.

In addition, in the medical joint cap of this invention, when filling the liquid flow path with physiological saline and preparing for connection with the tube on the injection needle side, the second cap is filled with physiological saline while flowing into the liquid flow path. 6 toward the first cap 3, and the opening of the open end 5 is held sealed by the sealing means 9 by the engaging means.

At this time, the opening of the open end 5 of the first cap 3 is sealed by a sealing means 9 provided on the second cap 6.
Since the medical tube 1 is sealed, the liquid flow path can be filled with physiological saline to prepare for connection with the tube on the injection needle side, without the need to clamp the medical tube 1.

Note that since the opening of the open end 5 is sealed as described above, there is no risk that the liquid flow path will be contaminated from the outside.

In the medical joint cap of this invention, when the tube on the injection needle side is to be connected, the first cap 3 and the second cap 6 are simultaneously removed from the joint 2 and connected to the joint 2 side.

[Effects of the invention] According to this invention, (1) the liquid flow path can be easily and sufficiently sterilized, and (2) when cleaning the liquid flow path of a medical tube, etc., the bedside (3) There is no need to clamp the medical tube between the cleaning and the connection with the tube on the injection needle side, and there is no leakage of the liquid, and the liquid flow path is not contaminated. It is possible to provide a medical fitting cap that has the following advantages.

[Brief explanation of the drawing]

FIG. 1 is a conceptual diagram illustrating the form of the medical joint cap of this invention. FIG. 2 is a conceptual diagram illustrating a known medical coupling cap. DESCRIPTION OF SYMBOLS 1... Medical tube, 2... Fitting, 3... First cap, 4... Connection end, 5... Open end,
6...Second cap, 7...Mounting end, 8...Through hole, 9...Sealing means, 10...Outer flange, 1
DESCRIPTION OF SYMBOLS 1...First recess, 12...Second recess, 13...Connecting member, 14...Gap.

Claims (1)

[Claims for Utility Model Registration] (1) A tubular first cap having a connecting end that is open on one side so as to be connectable to a joint of a medical tube and an open end that is open on the other side; a second cap, the second cap having a through hole and a sealing means for sealing the opening of the second cap; A medical joint cap characterized in that the opening of the open end can be sealed or opened by stepwise attachment to the first cap. (2) The medical coupling cap according to claim 1, wherein the sealing means is a protrusion that can be tightly fitted into the opening of the open end. (3) The medical coupling cap according to claim 1, wherein the sealing means is a flat surface that seals the opening at the open end.