Puncture device and fine pore formation method
AssigneeSysmex Corporation
InventorKei HAGINO
Life of this patent
Estimating the term…
Abstract
A puncture device includes a piston, wherein the needle is to be attached to a distal end of the piston; a drive spring which has one end capable of contacting a proximal end of the piston, and moves the piston in a specific direction toward the skin; and a first contact section including a contact surface capable of contacting other end of the drive spring. A length between a supposed strike position and the contact surface of the first contact section is longer than a total of a natural length of the drive spring and a length between the proximal end of the piston and a tip end of the needle, wherein the supposed strike position is where the tip end of the needle is supposed to strike against the skin.
Claims20
A puncture device for forming a fine pore on a skin of a subject by striking a needle against the skin, comprising:
- a piston, wherein the needle is to be attached to a distal end of the piston;
- a drive spring which has one end capable of contacting a proximal end of the piston, and moves the piston in a specific direction toward the skin;
- and
- a first contact section including a contact surface capable of contacting other end of the drive spring,
- wherein the one end of the drive spring and the proximal end of the piston are not fixed to each other, and/or the other end of the drive spring and the contact surface of the first contact section are not fixed to each other;
- and
- a length between a supposed strike position and the contact surface of the first contact section is longer than a total of a natural length of the drive spring and a length between the proximal end of the piston and a tip end of the needle, wherein the supposed strike position is where the tip end of the needle is supposed to strike against the skin.
A fine pore formation method of forming a fine pore on a skin of a subject, comprising:
- a step of accelerating and moving a needle in a specific direction toward the skin by continuously transmitting an
- elastic energy which is stored in a drive spring to the needle;
- a step of releasing transmission of the elastic energy, thereafter the needle further moves to the specific direction;
- and
- a step of striking the needle against the skin.
A fine pore formation method of forming a fine pore on a skin of a subject, comprising:
- a step of extending a drive spring up to a natural length in a state of dynamical contact between the drive spring and a needle by releasing compression of the drive spring;
- a step of releasing the dynamical contact between the drive spring and the needle after the drive spring extends up to the natural length;
- and
- a step of striking the needle against the skin in a state that the dynamical contact between the drive spring and the needle is released.
Dependencies are inferred from the claim text.