Echogenic needle

Details Echogenic needle Echogenic needle

1996-02-14

1998-06-23

Hindenburg, Max

Surgery

Diagnostic testing

Sampling nonliquid body material

600562, A61B 500

Patent

active

057697957

ABSTRACT:
An echogenic cannula 7 includes a hole provided at the distal tip end 17. Preferably the hole 5 is positioned through a centerline 8 which is spaced from the centerline 6 of the stylet 7 in order to form a concave surface 11 from which sound waves 10 are reflected in order to locate the distal tip end 17.

REFERENCES:
patent: 4401124 (1983-08-01), Guess et al.
patent: 4977897 (1990-12-01), Hurwitz
patent: 5081997 (1992-01-01), Bosley, Jr. et al.
patent: 5161542 (1992-11-01), Palestrant
patent: 5201314 (1993-04-01), Bosley et al.
"SonoVu.TM.US-A visible improvement in ultrasound-guided aspiration", E-Z-Em, Inc.; 1990; 1 page.
"SonoVu.TM.US A Multipurpose Ultrasound-Guided Aspiration Needle", Ultrasound Procedures, E-Z-EM, Inc.; 1992, 2 pages.

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