US 2006/0224171 A1 · Puncture device

Abstract

The present invention relates to a lancing device (1A) that includes a moving member (4) for moving a needle (20b) in an advancing direction (N1) from a standby position to a puncturing position, and also includes a contact portion (36) for contacting with a puncturing target (S). The lancing device (1A) applies a suctioning force to the moving member (4) to move the moving member (4) in a retreating direction so that the moving member (4) is brought to the standby position. The lancing device (1A) is provided with a decompression space (35) which is decompressed for applying the suctioning force to the moving member (4). Preferably, the pressure in the decompression space (35) is reduced to be smaller than the atmospheric pressure by a predetermined value, thereby moving the moving member (4) in the retreating direction.

Claims22

Dependent claims

A lancing device comprising:

a moving member for moving a needle in an advancing direction from a standby position to a puncturing position;
and
a housing arranged to allow the moving member to move in the advancing direction and in a retreating direction opposite to the advancing direction;
wherein the moving member moves in close contact with the housing,
wherein the housing includes a first space which is offset in the retreating direction from a portion contacting with the moving member, and a second space which is offset in the advancing direction from the portion contacting with the moving member;
wherein the moving member is moved in the retreating direction to be brought to the standby position by a pressure difference produced between the first space and the second space.

3 more elements

Dependencies are inferred from the claim text.

Puncture device

Life of this patent

Puncture device

Life of this patent

Abstract

Claims22