Spinal cannula with transparent grip part

Details Spinal cannula with transparent grip part Spinal cannula with transparent grip part

1994-09-26

1996-03-05

Maglione, Corrine M.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604900, 604272, A61M 5178

Patent

active

054962811

ABSTRACT:
The spinal cannula 1 is provided with a grip part, which consists of transparent plastic and surrounds the rear end of the cannula in a substance-securing manner. A cerebrospinal fluid checking chamber, which tapers toward the rear end of the cannula and is visible from the outside, is located in it, and this cerebrospinal fluid checking chamber is joined on the rear side by a conical plug-type Luer bore for accommodating the Luer plug-type cone of a drug syringe in a positive-locking manner. On the outside, the grip part has, between two flange parts, at least two, radially recessed grip surfaces, which are arranged diametrically opposed to one another and symmetrically to a plane of symmetry located in the longitudinal axis, and between which the cerebrospinal fluid checking chamber is arranged. In addition, there is a stylet, which can be introduced into the cannula through the cerebrospinal fluid checking chamber. The cerebrospinal fluid checking chamber extends at least approximately over the axial distance a between the two flange parts, and it has an essentially rectangular cross-sectional shape with flat wall surfaces extending in pairs in a wedge-shaped pattern in relation to one another, wherein one pair of wall surfaces is arranged symmetrically to the plane of symmetry of the grip surfaces, and has a wedge angle that is substantially smaller than the wedge angle of the other pair of wall surfaces.

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