Lancet device
First Claim
1. A needle assembly of lancet device comprising a casing being cylindrical and hollow and comprising an axle;
- an outer surface;
an inner surface;
a front end;
a rear end;
a rear stop formed on the inner surface of the casing near the rear end;
a front stop formed on the inner surface of the casing between the rear end and the front end;
a neck formed near the front end; and
an opening defined in the front end;
a needle hub mounted in the casing and comprising a top;
a bottom;
a front end;
a rear end; and
a needle mounted in and protruding coaxially from the front end;
a retracting unit formed on the top and the bottom of the needle hub; and
a limit unit formed on the needle hub.
1 Assignment
0 Petitions
Accused Products
Abstract
A lancet device has a needle assembly and a needle carrier. The needle assembly has a casing, a needle hub, a retracting unit and a limit unit. The needle hub with a needle is mounted in the casing. The retracting unit and the limit unit connect to the needle hub to limit the needle hub to move. The lancet carrier has a housing, a pushing rod, a spring and a cap. The housing connects the needle assembly and has a pressing unit. The pushing rod is mounted in the housing and abuts with the needle hub after pushing the pressing unit to release the force of the spring so the needle protrudes from the needle assembly. After pressing the cap, the needle assembly releases from the needle carrier. Therefore, the new needle assembly can be mounted in the lancet carrier to prick again.
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Citations
9 Claims
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1. A needle assembly of lancet device comprising
a casing being cylindrical and hollow and comprising an axle; -
an outer surface;
an inner surface;
a front end;
a rear end;
a rear stop formed on the inner surface of the casing near the rear end;
a front stop formed on the inner surface of the casing between the rear end and the front end;
a neck formed near the front end; and
an opening defined in the front end;
a needle hub mounted in the casing and comprising a top;
a bottom;
a front end;
a rear end; and
a needle mounted in and protruding coaxially from the front end;
a retracting unit formed on the top and the bottom of the needle hub; and
a limit unit formed on the needle hub. - View Dependent Claims (2, 3, 4, 5)
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6. A lancet device comprising
a needle assembly comprising a casing being cylindrical and hollow and comprising an axle; -
an outer surface;
an inner surface;
a front end;
a rear end;
a rear stop formed on the inner surface of the casing near the rear end;
a front stop formed on the inner surface of the casing between the rear end and the front end;
a neck formed near the front end; and
an opening defined in the front end;
a needle hub mounted in the casing and comprising a top;
a bottom;
a front end;
a rear end; and
a needle mounted in and protruding coaxially from the front end;
a retracting unit formed on the top and the bottom of the needle hub; and
a limit unit formed on the needle hub; and
a lancet carrier comprising a housing comprising a front end;
a rear end;
an inner surface;
an outer surface;
a circular groove formed in the inner surface near the front end of the housing to hold the protrusion of the needle assembly inside;
a circular protrusion formed on the inner surface of the housing;
a first half housing comprising an inner surface;
an outer surface;
a slot formed in the inner surface of the first half housing; and
a stop tap formed on the inner surface of the first half housing, being vertical to the slot and having a through hole formed in a center of the stop tap;
a second half housing combined with the first housing to form the housing and comprising an inner surface;
an outer surface;
a slot formed in the inner surface of the second half housing and corresponding to the slot in the first half housing; and
a stop tap formed on the inner surface of the second half housing, corresponding to the stop tap on the first half housing and having a through hole formed in a center of the stop tap and corresponding to the through hole in the stop tap on the first half housing;
a limit tab formed longitudinally on the inner surface of the first half housing;
a pressing unit mounted on and protruding from the outer surface of the second half housing and having a bottom;
a protrusion formed on the inner surface of the second half housing near the bottom of the pressing unit; and
two adjusting holes formed respectively through the outer surfaces of the first half housing and the second half housing;
a pushing rod slidably mounted in the housing and comprising a front end;
a rear end extending through the through holes in the stop taps;
a front ring;
a rear ring;
a middle having two ends formed respectively with the front ring and the rear ring;
a guide gaps formed longitudinally in the middle and corresponding to and holding the limit tab of the first half housing;
a protrusion formed on the rear ring; and
a resilient tab formed on the rear ring and extending toward the front ring;
a spring mounted around the pushing rod between the rear ring of the pushing rod and the stop taps;
a pushing tab slidably mounted in the slots in the first half housing and the second half housing and comprising a front end contacting with the casing of the needle assembly;
a rear end;
a frame formed on the pushing tab and slidably held between the slots of the first half housing and the second half housing;
a resilient tab formed on the frame and having a free end; and
a pulling protrusion formed on the free end of the resilient tab and selectively engaging with the protrusion of the pushing rod;
an adjusting unit mounted in the housing and comprising a circular hole formed through the adjusting unit and mounted around the pushing rod; and
two bars formed on the adjusting unit, opposite to each other and extending respectively out from the adjusting holes; and
a cap mounted on the rear end of the housing and abutting with the pushing tab. - View Dependent Claims (7, 8, 9)
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Specification