Puncture device
First Claim
1. A puncture device comprising:
- a puncture needle cartridge including;
a rod-like lancet body having a puncture needle at one end and a grip part to be held by a puncture device body at an opposing end;
a protective cap for covering and protecting the puncture needle and formed integrally with the rod-like lancet body; and
a puncture needle holder engaged with the rod-like lancet body to rotate together with the rod-like lancet body about a shaft center axis of rotation of the rod-like lancet body;
a mounting member for holding the puncture needle cartridge such that the puncture needle cartridge can be inserted and removed therefrom; and
a case mounted with the mounting member and held by the puncture device body,wherein the case includes a guiding portion for guiding a rotation of the mounting member about the axis of rotation,wherein the mounting member includes an external guided portion engaged with the guiding portion of the case,wherein the mounting member is engaged with the puncture needle holder and rotates together with the puncture needle holder about the axis of rotation by having the guided portion guided by the guiding portion as a result of being pressed by the puncture needle cartridge in a direction of mounting in the case,wherein the protective cap is prevented from rotating about the axis of rotation during the pressing of the puncture needle cartridge and is separated from the rod-like lancet body by the rotation of the mounting member about the axis of rotation,wherein the puncture needle holder includes cuts,wherein the mounting member includes internal projections, andwherein the cuts of the puncture needle holder are engaged by the internal projections of the mounting member, such that the puncture needle holder is held by the engagement of the cuts and the internal projections so as to limit a rotation of the puncture needle holder against the mounting member and about the axis of rotation.
4 Assignments
0 Petitions
Accused Products
Abstract
A puncture device capable of preventing needle stick accidents and of reducing the burden on patients during operation. In this puncture device, a puncture needle cartridge comprises: a lancet body having a puncture needle at one end with the other end being to be held by a puncture instrument body; a protective cap; and a puncture needle holder engaged with the lancet body to rotate together with the lancet body about a rotation axis P. A mounting member rotates together with the puncture needle holder with a boss guided by a slit through being pressed by the puncture needle cartridge in a direction of mounting in a case, and is mounted in the case. The protective cap, formed integrally with the lancet body, is prevented from rotating by being grasped and is separated from the lancet body with the rotation of the mounting member.
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Citations
11 Claims
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1. A puncture device comprising:
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a puncture needle cartridge including; a rod-like lancet body having a puncture needle at one end and a grip part to be held by a puncture device body at an opposing end; a protective cap for covering and protecting the puncture needle and formed integrally with the rod-like lancet body; and a puncture needle holder engaged with the rod-like lancet body to rotate together with the rod-like lancet body about a shaft center axis of rotation of the rod-like lancet body; a mounting member for holding the puncture needle cartridge such that the puncture needle cartridge can be inserted and removed therefrom; and a case mounted with the mounting member and held by the puncture device body, wherein the case includes a guiding portion for guiding a rotation of the mounting member about the axis of rotation, wherein the mounting member includes an external guided portion engaged with the guiding portion of the case, wherein the mounting member is engaged with the puncture needle holder and rotates together with the puncture needle holder about the axis of rotation by having the guided portion guided by the guiding portion as a result of being pressed by the puncture needle cartridge in a direction of mounting in the case, wherein the protective cap is prevented from rotating about the axis of rotation during the pressing of the puncture needle cartridge and is separated from the rod-like lancet body by the rotation of the mounting member about the axis of rotation, wherein the puncture needle holder includes cuts, wherein the mounting member includes internal projections, and wherein the cuts of the puncture needle holder are engaged by the internal projections of the mounting member, such that the puncture needle holder is held by the engagement of the cuts and the internal projections so as to limit a rotation of the puncture needle holder against the mounting member and about the axis of rotation. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A puncture device comprising:
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a puncture needle cartridge including; a rod-like lancet body having a puncture needle at one end and a grip part to be held by a puncture device body at an opposing end; a protective cap for covering and protecting the puncture needle and formed integrally with the rod-like lancet body; and a puncture needle holder engaged with the rod-like lancet body to rotate together with the rod-like lancet body about a shaft center axis of rotation of the rod-like lancet body; a mounting member for holding the puncture needle cartridge such that the puncture needle cartridge can be inserted and removed therefrom; and a case mounted with the mounting member and held by the puncture device body, wherein the mounting member is engaged with the puncture needle holder and rotates together with the puncture needle holder about the axis of rotation by having a guiding portion guiding a guided portion formed on the case when pressed by the puncture needle cartridge in a direction of mounting in the case, wherein the protective cap is prevented from rotating about the axis of rotation during the pressing of the puncture needle cartridge and is separated from the rod-like lancet body by the rotation of the mounting member about the axis of rotation, wherein the puncture needle holder includes cuts, wherein the mounting member includes internal projections, and wherein the cuts of the puncture needle holder are engaged by the internal projections of the mounting member, such that the puncture needle holder is held by the engagement of the cuts and the internal projections so as to limit a rotation of the puncture needle holder against the mounting member and about the axis of rotation. - View Dependent Claims (9, 10)
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11. A puncture device comprising:
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a puncture needle cartridge including; a rod-like lancet body having a puncture needle at one end and a grip part to be held by a puncture device body at an opposing end; a protective cap for covering and protecting the puncture needle and formed integrally with the rod-like lancet body; and a puncture needle holder engaged with the rod-like lancet body; a mounting member for holding the puncture needle cartridge such that the puncture needle cartridge can be inserted and removed therefrom; and a case mounted with the mounting member and comprising the puncture device body, wherein the case cooperates with the mounting member and rotates, about an axis of rotation, the puncture needle holder engaged with the mounting member when the mounting member is pressed by the puncture needle cartridge in a direction of mounting in the case, wherein the protective cap is prevented from rotating abut the axis of rotation during the pressing of the puncture needle cartridge and is separated from the rod-like lancet body by the rotation of the mounting member about the axis of rotation, wherein the puncture needle holder includes cuts, wherein the mounting member includes internal projections, and wherein the cuts of the puncture needle holder are engaged by the internal projections of the mounting member, such that the puncture needle holder is held by the engagement of the cuts and the internal projections so as to limit a rotation of the puncture needle holder against the mounting member and about the axis of rotation.
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Specification