초록 ▼

A connector for medical tubing for liquid transfusion includes a short tubular male connector member made of thermally resistant corrosionproof materia; a short tubular female connector member made of thermally resistant corrosionproof material; and a fitting surface portion on the outer surface of

A connector for medical tubing for liquid transfusion includes a short tubular male connector member made of thermally resistant corrosionproof materia; a short tubular female connector member made of thermally resistant corrosionproof material; and a fitting surface portion on the outer surface of an insertion end of the male connector, shaped in the male form and made of a material having a smaller thermal expansion coefficient than the material of a corresponding fitting surface portion on the inner surface of an insertion end of the female connector shaped in the female form. The fitting surface portion of the insertion end shaped in the male form, and the fitting surface portion of the insertion end shaped in the female form, are of relative sizes such as to permit the insertion ends to be connected to and separated from each other by shrink fit utilizing the difference between the thermal expansion coefficients thereof. A medical solution bag device using the connector is also disclosed.

대표청구항 ▼

CM,1. A connector arrangement for medical tubing for liquid transfusion, the connector connecting together two flexible tubes, the connector arrangement comprising: a tubular male connector member made of thermally resistant corrosionproof material, and having an end adapted to be connected by inser

CM,1. A connector arrangement for medical tubing for liquid transfusion, the connector connecting together two flexible tubes, the connector arrangement comprising: a tubular male connector member made of thermally resistant corrosionproof material, and having an end adapted to be connected by insertion to the connecting end of one of said two flexible tubes, said male connector member having a male engaging portion having a male insertion end shaped in a male form at the end thereof opposite from the aforementioned end connected to a tube, and further having an inner passage extending therethrough; a tubular female connector member made of thermally resistant corrosionproof material, and having an end adapted to be connected by insertion to the connecting end of the other of said two flexible tubes, said female connector member having a female engaging portion having a female insertion end shaped in a female form which is dimensioned for fast insertion into the insertion end shaped in the male form of said male connector member at the end opposite from said other of said two tubes and further having an inner passage extending therethrough; a first fitting surface portion provided on said male connector member on the outer surface of said male insertion end thereof; and a second fitting surface portion provided on an inner surface portion of said female insertion end of said female connector member; said first fitting surface portion of said male connector member being made of a material having a smaller thermal expansion coefficient than the material of said second fitting surface portion of said female connector member, and said first fitting surface portion of said male connector member and said second fitting surface portion of said female connector member having relative sizCM,26. A method for coupling and separating a connector arrangement for medical tubing for liquid transfusion under a sterilized state, using a connector for connecting together two flexible tubes, the method comprising: coupling together a tubular male connector member and a tubular female connector member by heating them with a flame to sterilize said male and female connector members, inserting said male connector members into said female connector member, and allowing said male and female connectors to cool to shrink fit to each other to be strongly connected together; and then separating said coupled together male and female connector members by heating them with a flame to sterilize connector members, and then applying a separating force to said male and female connector members until they separate from each other; the tubular male connector member being made of thermally resistant corrosionproof material, and having an end adapted to be connected by insertion to the connecting end of one of said two flexible tubes, said male connector member having a male engaging portion having a male insertion end shaped in a male form at the end thereof opposite from the aforementioned end connected to a tube, and further having an inner pasaage extending therethrough; the tubular female connector member being made of thermally resistant corrosionproof material, and having an end adapted to be connected by insertion to the connecting end of the other of said two flexible tubes, said female connector member having a female engaging portion having a female insertion end shaped in a female form which is dimensioned for fast insertion into the insertion end shaped in the male form of said male connector member at the end opposite from said other of said two tubes and further having an inner passage extending therethrough; a first fitting surface portion provided on said male connector member on the outer surface of said male insertion end thereof; and a second fitting surface portion provided on an inner surface portion of said female insertion end of said female connector member; said first fitting surface portion of said male connector member being made of a material having a smaller thermal expansion coefficient than the material of said second fitting surface portion of said female connector member, and said first fitting surface portion of said male connector member and said second fitting surface portion of said female connector member having relative sizes such as to permit the insertion ends thereof to be connected to and separated from each other by shrink fit utilizing a difference between the thermal expansion coefficients thereof; wherein the materials forming said male and said female connector members including said first and said second fitting surface portions are capable of withstanding heating to a temperature sufficient for sterilization of both connector member, and said dfference between the thermal expansion coefficients is selected to enable both connector members to be joined to and separated from one another at the sterilization temperature.