Automatic safe disposable blood sampling device of casing self-locking type
First Claim
1. A casing self-locking type of automatic safe blood sampling device, comprising:
- a casing formed with a launching chamber therein, the launching chamber being provided with a lancet needle-exiting hole at a front end thereof;
a lancet needle arranged inside the launching chamber;
a spring;
a launching mechanism composed of the spring and a catch-launching mechanism;
a press-launching mechanism provided on the casing; and
a self-locking mechanism composed of barbs provided on the press-launching mechanism and self-locking hooks or self-locking notches provided on the casing corresponding to the barbs, the self-locking hooks or self-locking notches being located on paths along which the barbs are advanced, respectively.
0 Assignments
0 Petitions
Accused Products
Abstract
An automatic safe disposable blood sampling device includes a casing with a launching chamber formed therein. The launching chamber has a lancet needle-exiting hole at a front end thereof; a lancet needle arranged inside the launching chamber; a spring; a launching mechanism composed of the spring and a catch-launching mechanism; a press-launching mechanism provided on the casing; and a self-locking mechanism composed of barbs provided on the press-launching mechanism and self-locking hooks or notches provided on the casing which engage corresponding barbs. When pressed, the press-launching mechanism triggers the catch-launching mechanism, to disengage the lancet needle from the casing. The spring pushes the lancet needle so as to launch the lancet needle. During forward movement of the press-launching mechanism, the barbs pass across the self-locking hooks or notches. In the process of retraction, the barbs are locked with the self-locking hooks or notches and cannot return to their initial states.
137 Citations
6 Claims
-
1. A casing self-locking type of automatic safe blood sampling device, comprising:
-
a casing formed with a launching chamber therein, the launching chamber being provided with a lancet needle-exiting hole at a front end thereof;
a lancet needle arranged inside the launching chamber;
a spring;
a launching mechanism composed of the spring and a catch-launching mechanism;
a press-launching mechanism provided on the casing; and
a self-locking mechanism composed of barbs provided on the press-launching mechanism and self-locking hooks or self-locking notches provided on the casing corresponding to the barbs, the self-locking hooks or self-locking notches being located on paths along which the barbs are advanced, respectively. - View Dependent Claims (2, 3, 4, 5, 6)
-
Specification