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US 5,320,608 AGranted
Combined pneumo-needle and trocar apparatus
OwnerCarmen J. Gerroneinventor
Life of this patent
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OwnerCarmen J. Gerroneinventor
Estimating the term…
A trocar houses a pneumo-needle, the cutting tip of which emerges eccentrically or concentrically from the tip of the trocar. An obturator, in turn, is housed within said pneumo-needle and is controlled at the distal end of the pneumo-needle by a spring release button. A cannula and reducer housing surround the trocar and are selectively attachable to a needle retainer which controls the penetration of the obturator, pneumo-needle, trocar and cannula into the abdominal cavity. A latch mounted on the rear of the needle retainer permits the pneumo-needle to selectively slide with respect to the needle retainer. Graduations on the needle permit the surgeon to set the depth of penetration of the pneumo-needle. The latch controls the depth of penetration of the pneumo-needle beyond the front face of the needle retainer. The pneumo-needle, in turn, acts as a pilot and controls the depth of penetration of the trocar and cannula. A cannula stop mounted on the needle retainer sets the depth of penetration of the trocar and cannula and permits the cannula to selectively slide with respect to the needle retainer. The apparatus allows the surgeon to employ the full length of the pneumo-needle as a pilot without having to partially withdraw the pneumo-needle prior to inserting the trocar and cannula.
A surgical apparatus for use by a surgeon for introducing a cannula into a patient, said apparatus comprising:
The apparatus of claim further comprising:
A method for use by a surgeon for introducing a cannula into a patient through the use of a surgical apparatus including a pneumo-needle having a shaft and a sharp cutting tip, a trocar including a cutting tip surrounding said pneumo-needle, a cannula surrounding said trocar and said pneumo-needle, a knob attached to one end of said pneumo-needle, a needle retainer selectively lockable to said pneumo-needle, and a reducer housing attached to said cannula and lockable with respect to said needle retainer, said method comprising the steps of:
A surgical apparatus for use by a surgeon for introducing a cannula into a patient, said apparatus comprising:
A surgical apparatus for use by a surgeon for introducing a cannula into a patient, said apparatus comprising:
Dependencies are inferred from the claim text.