Safety lancet device
First Claim
1. A safety lancet device comprising:
- a casing;
a driver assembly mounted in the casing and comprising a cylindrical container mounted securely with the casing and comprising a proximal open end;
a distal open end;
an inner surface;
an outer surface;
an outer diameter;
an inner diameter, a middle;
an annular protrusion formed integrally with and extending inward from the inner surface in the middle and having an inner surface, an inner diameter and a top; and
multiple side slots formed through the outer surface, between the annular protrusion and the distal open end and each comprising a top and a bottom;
a cylindrical pressing unit slidably mounted around the distal open end of the container and comprising a proximal end;
a distal end;
an inner diameter corresponding to the outer diameter of the container;
multiple protruding keys formed integrally with and extending outward from the distal end and having respectively bottoms; and
a rod formed on and extending downward from the proximal end and having a free end;
a cylindrical controller slidably mounted in the distal open end of the container and comprising a proximal end;
a distal end;
an outer diameter corresponding to the inner diameter of the container, an outer surface;
an inner surface;
multiple arced controller tabs corresponding respectively to the protruding keys of the pressing unit and the side slots of the container and having respectively an attached end and a free end, wherein the attached end is formed on and extends from the outer surface; and
an inner annular ring formed on and extending radially inward from the inner surface and near the distal end and having an inner diameter smaller than the inner diameter of the annular protrusion of the container;
a pushing unit slidably mounted in the controller and comprising a proximal closed end;
a distal closed end;
an outer diameter smaller than the inner diameter of the inner annular ring in the controller;
a head formed on and extending upward from the distal closed end and having an outer diameter larger than the inner diameter of the inner annular ring in the controller; and
multiple arced tabs formed on and extending downward from the head and respectively having an attached end;
a free end; and
an outer diameter smaller than the inner diameter of the annular protrusion in the container when the free end abutting the pushing unit; and
a resilient element mounted between the pushing unit and the casing; and
a needle hub with a needle slidably mounted in the proximal open end of the container.
1 Assignment
0 Petitions
Accused Products
Abstract
A safety lancet device has a casing, a driver assembly and a needle hub with a needle. The driver assembly and the needle hub are mounted within the casing. The driver assembly comprises a container, a pressing unit, a controller, a pushing unit and a resilient unit. The needle hub is controlled by the driver assembly to make the needle momentarily protrude. After the needle is used, the location of the driver assembly keeps the needle from protruding. When a new needle hub replaces the used needle hub, the driver assembly will return to the original location before use and can drive the needle momentarily from the casing. Users will not forget to change the used needle. Furthermore, the safety lancet device will decrease the danger of infection.
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Citations
19 Claims
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1. A safety lancet device comprising:
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a casing;
a driver assembly mounted in the casing and comprising a cylindrical container mounted securely with the casing and comprising a proximal open end;
a distal open end;
an inner surface;
an outer surface;
an outer diameter;
an inner diameter, a middle;
an annular protrusion formed integrally with and extending inward from the inner surface in the middle and having an inner surface, an inner diameter and a top; and
multiple side slots formed through the outer surface, between the annular protrusion and the distal open end and each comprising a top and a bottom;
a cylindrical pressing unit slidably mounted around the distal open end of the container and comprising a proximal end;
a distal end;
an inner diameter corresponding to the outer diameter of the container;
multiple protruding keys formed integrally with and extending outward from the distal end and having respectively bottoms; and
a rod formed on and extending downward from the proximal end and having a free end;
a cylindrical controller slidably mounted in the distal open end of the container and comprising a proximal end;
a distal end;
an outer diameter corresponding to the inner diameter of the container, an outer surface;
an inner surface;
multiple arced controller tabs corresponding respectively to the protruding keys of the pressing unit and the side slots of the container and having respectively an attached end and a free end, wherein the attached end is formed on and extends from the outer surface; and
an inner annular ring formed on and extending radially inward from the inner surface and near the distal end and having an inner diameter smaller than the inner diameter of the annular protrusion of the container;
a pushing unit slidably mounted in the controller and comprising a proximal closed end;
a distal closed end;
an outer diameter smaller than the inner diameter of the inner annular ring in the controller;
a head formed on and extending upward from the distal closed end and having an outer diameter larger than the inner diameter of the inner annular ring in the controller; and
multiple arced tabs formed on and extending downward from the head and respectively having an attached end;
a free end; and
an outer diameter smaller than the inner diameter of the annular protrusion in the container when the free end abutting the pushing unit; and
a resilient element mounted between the pushing unit and the casing; and
a needle hub with a needle slidably mounted in the proximal open end of the container. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification