Small gauge, pre-split cannula and process for manufacture
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United States of America Patent
Stats
-
May 22, 1984
Grant Date -
N/A
app pub date -
Jun 26, 1982
filing date -
Jun 26, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A small size cannula having internal grooves is produced by pre-splitting the proximal end of the cannula along the grooves, and mounting the split ends into plastic, breakaway wings. By means of the split ends, mounting of the cannula into the wings is greatly facilitated. The process also permits the grooves to be formed along the barrel of the cannula in a random fashion, which entails less manufacturing expense. Following insertion of the cannula into a patient, the catheter is fed through the cannula into the patient, and the cannula is withdrawn. The pre-split cannula is then broken or split away from the catheter using the wings. Since less force is required to initiate splitting of the cannula, shallower grooves can be used, and this results in a greater structural integrity for cannula of smaller sizes.
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