JPH039744Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to the improvement of connectors used as parts of medical equipment such as blood circuits and blood transfusion sets. 2, the end 13 is connected to the liquid transfer tube 12.
and a fitting protrusion 14 formed in a Luer tapered shape.
a female member 19 having a fitting groove 16 formed to be able to fit with the fitting protrusion 14 of the male member 15 and an end 18 connected to the liquid transfer tube 17. ing.

These connectors 11 were assembled using the following method.

(1) Fitting protrusion 1 between male member 15 and female member 19
4 and the fitting groove 16 are directly connected in a dry state.

(2) Fitting protrusion 1 between male member 15 and female member 19
4 and the fitting groove 16 after applying silicone oil, adhesive, etc., respectively, and then connect them.

[Problems with Prior Art] However, the above connection method has the following problems.

In the case of (1), a leak test is conducted after the connector is assembled. In this leak test (there are dry and wet methods), if the connector is a defective product that leaks, in the dry method, leakage is confirmed. However, with the wet method, there were cases where leakage could not be confirmed.

This is due to the surface tension of liquid that enters the leak point between the male and female parts of the connector when the connector itself is placed in a wet state.
This is due to sealing due to capillary action, etc., but in any case, such a situation is not desirable because it cannot be determined as a result of an accurate leak test.

In the case of (2), if you use silicone oil or adhesive to assemble the connector, the problem in (1) will disappear, but if you use silicone oil, the connection part will slide better, Although it becomes easier to fit, it also makes it easier to come off, which causes it to come off during use and cause leakage of blood, medical solutions, etc. On the other hand, when adhesive is used, the connecting parts are completely fixed, so if a problem occurs during treatment, the entire device must be removed, which is inconvenient to handle.

Therefore, the inventor of the present invention has conducted intensive studies to solve the above problems and has arrived at the following idea.

[Means for Solving the Problems] The present invention includes a male member 5 that is attached to at least one location of a medical device and has a fitting protrusion 4 and a fitting groove 6.
In a connector for a medical device consisting of a female member 9 having a The present invention provides a connector for a medical device to which a member 9 is detachably attached.

[Function] With the above configuration, a suitable liquid film is formed on the fitting surface of the male member 5 and the female member, so that gas and liquid cannot pass through the intervening layer 10, resulting in airtightness and liquidtightness. Not only can the properties be maintained, but also the intervening layer 10 has appropriate elasticity, so
The male member 5 and the female member can be smoothly attached and detached, and the operability of the connector is greatly improved.

[Example] Fig. 1 shows a connector 1 of the present invention. That is, a male member 5 having an end 3 connected to the liquid transfer tube 2 and a fitting protrusion 4 formed in a Luer tapered shape is formed so as to be able to fit with the fitting protrusion 4 of the male member 5. It consists of a fitting groove 6 and a female member 9 having an end 8 connected to a liquid transfer tube 7, and the surface of the fitting protrusion 4 is coated with a hygroscopic substance such as glycerin or wax. An intervening layer 10 is formed, and the male member 5 and female member 9 are made detachable.

That is, this intervening layer 10 can be applied by simply applying the above-mentioned substance to the surface of the fitting protrusion 4 directly or by a dipping method, or by depositing it to a uniform thickness by a conventional vapor deposition method.

The intervening layer 10 is made of a hygroscopic substance, and a suitable liquid film is formed on the mating surfaces of the male member 5 and the female member from the time the connector is assembled until the time it is used for treatment, so that it does not absorb gas or liquid. cannot pass through the intervening layer 10, and can maintain air-tightness and liquid-tightness, as well as the intervening layer 10 having appropriate elasticity, making it possible to attach and detach the male member 5 and the female member. It can be done smoothly and the connector is very easy to operate.

Further, in the present invention, the intervening layer 10 is formed only on the surface of the fitting groove 6 of the female member 9, or on the fitting protrusion 4 of the male member 4 and the female member 9 and the fitting groove 6 of the female member 9.
A similar effect was observed even when it was formed on both sides.

[Effects of the invention] As described above, the invention has the following advantages: (1) The airtightness and liquid density of the connection area are significantly improved;
The risk of contamination of air bubbles and leakage of blood, chemical solutions, etc. from the connection part is drastically reduced, and the possibility of infection by various bacteria from the connection part is eliminated.
Safer and more hygienic treatment can be performed.

(2) Since the intervening layer connects the male and female members via a liquid film without completely solidifying, it is easy to attach and detach these members.
Even if trouble occurs during treatment, it can be easily removed, and when reconnecting the male member and female member, the intervening layer 10 is The liquid film can be regenerated in the same way as in the connection state of (1), and the same effect as (1) can be maintained.

This is a device that has excellent practical effects.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing a connector of the present invention, and FIG. 2 is a diagram showing a conventional connector. In the figure, 1 is a connector, 2 and 7 are liquid transfer tubes, 3 and 8 are ends, 4 is a fitting protrusion, 5 is a male member, 6 is a fitting groove, 9 is a female member, and 10 is an intervening layer. show.

Claims (1)

[Scope of utility model registration request] In a connector for a medical device consisting of a male member 5 having a fitting protrusion 4 attached to at least one location of the medical device and a female member 9 having a fitting groove 6, the fitting protrusion 4 and/or the fitting groove 6 are A connector for a medical device, characterized in that an intervening layer 10 made of a film of a hygroscopic substance is coated on the surface, and the male member 5 and female member 9 are detachably attached.