Infiltration cannula with teflon coated outer surface
First Claim
Patent Images
1. An infiltration cannula for dispensing a treatment fluid comprising:
- an axially elongated rigid tube of the infiltration cannula with a single annular wall, a proximal end portion adapted to receive the treatment fluid and a distal end portion;
a polytetrafluorethylene coating disposed over substantially an entire outer surface of the axially elongated rigid tube; and
a plurality of apertures disposed in a transverse sidewall and extending through the sidewall and polytetrafluorethylene coating of the distal end portion of the elongated tube for dispensing the treatment fluid.
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Abstract
An infiltration cannula is provided. The infiltration cannula includes an axially elongated tube having a circular cross-section, a proximal end portion adapted to receive a treatment fluid and a distal end portion with a plurality of apertures disposed in a transverse sidewall of the distal end portion of the elongated tube for dispensing the treatment fluid. The cannula also includes a teflon coating disposed over and outer surface of the elongated member.
62 Citations
13 Claims
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1. An infiltration cannula for dispensing a treatment fluid comprising:
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an axially elongated rigid tube of the infiltration cannula with a single annular wall, a proximal end portion adapted to receive the treatment fluid and a distal end portion;
a polytetrafluorethylene coating disposed over substantially an entire outer surface of the axially elongated rigid tube; and
a plurality of apertures disposed in a transverse sidewall and extending through the sidewall and polytetrafluorethylene coating of the distal end portion of the elongated tube for dispensing the treatment fluid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification