| 摘要 |
PCT No. PCT/CH94/00007 Sec. 371 Date Sep. 19, 1994 Sec. 102(e) Date Sep. 19, 1994 PCT Filed Jan. 14, 1994 PCT Pub. No. WO94/15532 PCT Pub. Date Jun. 21, 1994.A non-sterile ultrasonic-Doppler unit (400/500/600) for locating and puncturing blood vessels is at least partly packed sterile with a sterile device (100/200/300), such that it can be used in a sterile field. The probe (600) of the ultrasonic-Doppler unit, has a slot (610) orientated in the axis of the ultrasonic field and is inserted into a sterile cap (300), causing a guide tube (340) for the puncturing needle penetrating this cap to lie in the slot of the probe. The device envelopes the probe completely, such that the non-sterile ultrasonic probe (600) does not contaminate the puncturing needle, the patient's skin nor the surgeon. The cap (300) can contain a coupling member, which guarantees ultrasonic coupling between the probe (600) and the patient's skin, such that the surgeon need not add any gel. All parts of the device are disposable single-use articles.
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