Lancet
1 Assignment
0 Petitions
Accused Products
Abstract
Plastics material injected through an entry point of a mould at the location (8) is caused to deflect around a pin which creates the hole (9) in a guard (5), so as to increase the balance of flow of material to either side of the pin (9). In order to minimise the tendency for the plastics material to bend out of shape the tip of the needle embedded within an enlarged portion (13) the mould is formed such that the mould material is initially encouraged to divide and flow through outer thickened regions (10) surrounding a thinner portion. At point (12) the plastics material is therefore caused to slow down resulting in greater equalisation of the flow speed of the plastics material to either side of the needle tip.
-
Citations
17 Claims
-
1-11. -11. (canceled)
- 12. A lancet having a support body enclosing a needle such that a pointed tip of the needle projects beyond the end of the support body and a removable guard located over the pointed tip of the needle and interconnected with a support body holding the needle via a breakable neck portion moulded with the guard and the support body, and the guard being formed of a moulded plastics material with an outer edge thickened region leading from the end of the guard remote from the needle tip to a thinner section of the plastics material approaching the needle tip, the plastics material forming a further thickened region about the needle tip, but separated from the outer edge region by said thinner section.
- 15. A method of forming a lancet in which a needle is held in a mould formed to create a support body for holding the base portion of the needle and a removable guard about the pointed needle tip and to form a breakable neck portion between the support body and the guard, the mould having an entry point for plastics material, at the end of the guard remote from the needle point, leading to an outer edge thickened hollow region which in turn leads to a thinner hollow section approaching the needle tip and a further enlarged hollow region about the needle tip, and plastics material is injected into the mould via the entry point to create the guard about the needle tip.
Specification