Ventilating needle and method of manufacturing the same

Details Ventilating needle and method of manufacturing the same Ventilating needle and method of manufacturing the same

1986-03-05

1987-06-23

Truluck, Dalton L.

Surgery

Container for blood or body treating material, or means used...

Filter for purifying or washing air entering container

210446, 604126, 604411, A61M 500, B01D 4600

Patent

active

046750177

ABSTRACT:
This invention discloses a ventilating needle having a membrane-type filter stretched across the communication passage of a hub portion of the needle. In this invention, the membrane-type filter is of 2-ply type composed of a reinforcement layer and a water-repellent filter having a higher melting point than said reinforcement layer. This membrane-type filter is thermally adhered to a step portion formed in the inner wall of the hub portion through interfusion of the reinforcement layer and the step portion. This invention also discloses a method of assembling the ventilating needle in which a membrane-type filter is adhered to a step portion formed in the inner wall of the hub by means of ultrasonic waves.

REFERENCES:
patent: 3157481 (1964-11-01), Bujan
patent: 4113627 (1978-09-01), Leason
patent: 4298358 (1981-11-01), Ruschke
patent: 4473094 (1984-09-01), Harris

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