PUNCTURE DEVICE AND FINE PORE FORMATION METHOD
First Claim
1. 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.
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Accused Products
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.
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Citations
20 Claims
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1. A puncture device for forming a fine pore on a skin of a subject by striking a needle against the skin, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A fine pore formation method of forming a fine pore on a skin of a subject, comprising:
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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. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A fine pore formation method of forming a fine pore on a skin of a subject, comprising:
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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. - View Dependent Claims (20)
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Specification