Patent ID: 11911088
Assignee: BIO-PROTECH INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A smoke pencil with swivel device comprising:
a body longitudinally elongated, having a space longitudinally formed therein, having a blade disposed at a longitudinal front of the space to be exposed outside, and having a coupling portion protruding from a longitudinal rear of the space;
an operation part including a substrate disposed at a side of the space and electrically connected with the blade, an operator connected to the substrate and exposed over the space, and a cable having an end electrically connected to the substrate and another end extending out of the body through the space and the coupling portion; and
a rotation guide comprising
a first case, which has a first curved shape and is rotatably disposed on a side of an outer surface of the coupling portion;
a second case, which has a second curved shape symmetrical to the first curved shape and is rotatably disposed on another side of the outer surface of the coupling portion and coupled with the first case; and
an inflow air cannula configured to seal a first joint between a side of the coupling portion and the first case and a second joint between another side of the coupling portion and the second case,

wherein:
the first case comprises a first rotation guide slit and a first guide groove, which are formed on an inner surface of the first case;
the second case comprises a second rotation guide slit and a second guide groove, which are formed on an inner surface of the second case;
the coupling portion comprises a rotation guide protrusion, which is formed on the outer surface of the coupling portion and is configured to be inserted into and rotated along the first rotation guide slit and the second rotation guide slit; and
the inflow air cannula comprises an insertion portion having a rod shape and configured to be inserted into the coupling portion, and a bending portion, which is positioned at a rear end of the insertion portion and positioned outside the coupling portion, and is configured to be inserted into and rotated along the first guide groove and the second guide groove.