Skin prickers
First Claim
1. A skin pricking device comprising a barrel with an aperture at its leading end and a longitudinal slot in its side, a spring loaded lancet contained in the barrel, a priming and release element projecting laterally from the lancet through the slot, the element being connected to the lancet within the barrel by a neck of reduced cross-section in relation to the rest of the element, and a catch formation on the barrel past which the element can be shifted upon rearward movement along the slot, the catch formation then retaining the device primed, and the element being manipulable to break away from the lancet at the neck and thereby release the lancet for its tip momentarily to be projected through the aperture at the leading end of the barrel.
1 Assignment
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Accused Products
Abstract
A skin pricker includes a barrel and a spring loaded lancet which can be primed and then fired, momentarily to project its tip. A finger projects laterally from the lancet through a slot in the barrel and this finger is pulled back past a catch to prime the device. A weak connection between the finger and lancet allows the finger to be bent until that connection breaks, thus firing the lancet. The finger may remain captive to the barrel.
25 Citations
17 Claims
- 1. A skin pricking device comprising a barrel with an aperture at its leading end and a longitudinal slot in its side, a spring loaded lancet contained in the barrel, a priming and release element projecting laterally from the lancet through the slot, the element being connected to the lancet within the barrel by a neck of reduced cross-section in relation to the rest of the element, and a catch formation on the barrel past which the element can be shifted upon rearward movement along the slot, the catch formation then retaining the device primed, and the element being manipulable to break away from the lancet at the neck and thereby release the lancet for its tip momentarily to be projected through the aperture at the leading end of the barrel.
Specification