Lancing device, method of making lancing device, pump mechanism, and sucking device
First Claim
1. A lancing device incorporating a vacuum generating mechanism, comprising:
- a housing;
a moving body movable relatively to the housing for forward movement of a needle;
a driving mechanism for forward movement of the moving body;
a hollow pressing portion at a front end of the housing for contact with a part where a puncture is to be made; and
a pump mechanism capable of causing a vacuum to act inside the pressing portion,wherein the pump mechanism is capable of adjusting the vacuum; and
wherein the pump mechanism includes;
a moving portion capable of reciprocating in a first direction and a second direction opposite to the first direction;
a pressure chamber capable of communicating with an outside of the pressing portion via a discharge port and capable of communicating with an inside of the pressing portion via an intake port, the pressure chamber having a volumetric capacity varied by the reciprocation of the moving portion,a first check valve capable of opening and closing the discharge port, the first check valve opening the discharge port when the volumetric capacity of the pressure chamber decreases, and the first check valve closing the discharge port when the volumetric capacity of the pressure chamber increases, anda second check valve capable of opening and closing the intake port, the second check valve opening the intake port when the volumetric capacity of the pressure chamber increases, and the second check valve closing the intake port when the volumetric capacity of the pressure chamber decreases.
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Accused Products
Abstract
A lancing device according to the present invention includes: a housing; a moving body movable relatively to the housing for forward movement of a needle; a driving mechanism for forward movement of the moving body; a hollow pressing portion at a front end of the housing for contact with a part where a puncture is to be made; and a pump mechanism capable of causing a vacuum to act inside the pressing portion. The pump mechanism is capable of adjusting the vacuum. The pump mechanism includes for example: a moving portion capable of reciprocating in a first direction and a second direction away from the first direction. Preferably, the adjustment of the vacuum is made by changing the number of reciprocations of the moving part in the first and the second directions.
138 Citations
17 Claims
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1. A lancing device incorporating a vacuum generating mechanism, comprising:
- a housing;
a moving body movable relatively to the housing for forward movement of a needle;
a driving mechanism for forward movement of the moving body;
a hollow pressing portion at a front end of the housing for contact with a part where a puncture is to be made; and
a pump mechanism capable of causing a vacuum to act inside the pressing portion,wherein the pump mechanism is capable of adjusting the vacuum; and wherein the pump mechanism includes; a moving portion capable of reciprocating in a first direction and a second direction opposite to the first direction; a pressure chamber capable of communicating with an outside of the pressing portion via a discharge port and capable of communicating with an inside of the pressing portion via an intake port, the pressure chamber having a volumetric capacity varied by the reciprocation of the moving portion, a first check valve capable of opening and closing the discharge port, the first check valve opening the discharge port when the volumetric capacity of the pressure chamber decreases, and the first check valve closing the discharge port when the volumetric capacity of the pressure chamber increases, and a second check valve capable of opening and closing the intake port, the second check valve opening the intake port when the volumetric capacity of the pressure chamber increases, and the second check valve closing the intake port when the volumetric capacity of the pressure chamber decreases. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- a housing;
-
16. A lancing device incorporating a vacuum generating mechanism, comprising:
- a housing;
a moving body movable relatively to the housing for forward movement of a needle;
a driving mechanism for forward movement of the moving body;
a hollow pressing portion at a front end of the housing for contact with a part where a puncture is to be made; and
a pump mechanism capable of causing a vacuum to act inside the pressing portion;wherein the pump mechanism is capable of adjusting the vacuum; wherein the pump mechanism includes;
a moving portion capable of reciprocating in a first direction and a second direction away from the first direction; and
a pressure chamber having a volumetric capacity varied by the reciprocation of the moving portion;wherein the lancing device further comprises a pressure reducing operation member for movement of the moving portion; wherein the pressure reducing operation member reciprocates with respect to the housing; and wherein the pressing portion is rotated about an axis thereof by the reciprocating action of the pressure reducing operation member with respect to the housing. - View Dependent Claims (17)
- a housing;
Specification