PUNCTURE DEVICE

• US 20110015662A1
• Filed: 03/06/2009
• Published: 01/20/2011
• Est. Priority Date: 03/07/2008
• Status: Active Grant

• Current Assignee: PHC Holdings Corporation
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Takeuchi, Yoshiki, Nagao, Akio, Okuyama, Koji
• Granted Patent: US 8,679,145 B2
• Time in Patent Office: Days
• US Class Current: 606/181
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150259 Improved gripping, e.g. with high friction pattern or projections on the housing surface or an ergonometric shape
• CPC Class Codes: A61B 5/150412 Pointed piercing elements, e.g. needles, lancets for piercing the skin blade-like piercing elements A61B5/150442
• CPC Class Codes: A61B 5/150519 Details of construction of hub, i.e. element used to attach the single-ended needle to a piercing device or sampling device
• CPC Class Codes: A61B 5/150549 Protectors removed by rotational movement, e.g. torsion or screwing
• CPC Class Codes: A61B 5/150618 Integrally moulded protectors, e.g. protectors simultaneously moulded together with a further component, e.g. a hub, of the piercing element
• CPC Class Codes: A61B 5/150709 semi-automatically removed, i.e. before puncturing the protection is removed by a mechanism initiated by a deliberate action by the user, such as pressing a button
• CPC Class Codes: A61B 5/150717 manually removed
• CPC Class Codes: A61B 5/15186 Devices loaded with a single lancet, i.e. a single lancet with or without a casing is loaded into a reusable drive device and then discarded after use; drive devices reloadable for multiple use

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.

Claims

1. A puncture device comprising:

a puncture needle cartridge having;

a rod-like lancet body having a puncture needle at one end with the other end being to be held by a puncture device body;

a protective cap for protecting the puncture needle and formed integrally with the lancet body; and

a puncture needle holder engaged with the lancet body to rotate together with the lancet body about a shaft center of the lancet body;

a mounting member for holding the puncture needle cartridge such that the puncture needle cartridge can be inserted and removed; and

a case mounted with the mounting member and held by the puncture device body,

wherein the case has a guiding portion for guiding the rotation of the mounting member about the axis of rotation,

wherein the mounting member is engaged with the puncture needle holder and rotates together with the puncture needle holder about the axis of rotation with a guided portion guided by the guiding portion through being pressed by the puncture needle cartridge in a direction of mounting in the case, and

wherein the protective cap is prevented from rotating about the axis of rotation during the press and is separated from the lancet body with the rotation of the mounting member about the axis of rotation.

2. The puncture device according to claim 1,

wherein the case is tubular with a first hollow for mounting the mounting member and has the guiding portion, which is helical, on a first wall portion formed around the first hollow, and

wherein the mounting member is tubular with a second hollow for inserting the puncture needle cartridge and has the guided portion, which is slidably engaged with the guiding portion, on a second wall portion formed around the second hollow.

3. The puncture device according to claim 1,

wherein the case has a slit as the guiding portion, and

wherein the mounting member has a protrusion as the guided portion.

4. The puncture device according to claim 1, wherein the protective cap has a limit portion which is engaged with the case and whose rotation about the axis of rotation is limited when the puncture needle cartridge is inserted into the mounting member mounted on the case.

5. The puncture device according to claim 1, wherein the mounting member rotates clockwise or counterclockwise about the axis of rotation through the guided portion guided by the guiding portion.

6. The puncture device according to claim 1, further having:

an ejection member which is in contact with the mounting member to press the mounting member in an ejection direction of the puncture needle cartridge opposite to the mounting direction; and

an elastic member placed between the case and the mounting member for biasing the mounting member in the ejection direction when the mounting member is pressed in the mounting direction,

wherein when the protective cap is separated from the lancet body, the mounting member is engaged with the case and the movement in the ejection direction is limited, and when the mounting member is pressed in the ejection direction by the ejection member, the engagement of the mounting member with the case is released and the mounting member moves in the ejection direction through the biasing force of the elastic member to allow the puncture needle cartridge to be ejected.

7. The puncture device according to claim 1, further having a fixing member engaged with the protective cap to thereby prevent the protective cap from rotating about the axis of rotation when the mounting member is pressed in the mounting direction by the puncture needle cartridge.

8. A puncture device comprising:

a puncture needle cartridge having;

a rod-like lancet body having a puncture needle at one end with the other end being to be held by a puncture device body;

a protective cap for protecting the puncture needle and formed integrally with the lancet body; and

a puncture needle holder engaged with the lancet body to rotate together with the lancet body about a shaft center of the lancet body;

a mounting member for holding the puncture needle cartridge such that the puncture needle cartridge can be inserted and removed; 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 through 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, and

wherein the protective cap is prevented from rotating about the axis of rotation during the press and is separated from the lancet body with the rotation of the mounting member about the axis of rotation.

9. The puncture device according to claim 8,

wherein the mounting member is tubular with a first hollow for inserting the puncture needle cartridge and has the guiding portion, which is helical, on a first wall portion formed around the first hollow, and

wherein the case is tubular with a second hollow for mounting the mounting member and has the guided portion, which is slidably engaged with the guiding portion, on a second wall portion formed around the second hollow.

10. The puncture device according to claim 8,

wherein the mounting member has a slit as the guiding portion, and

wherein the case has a protrusion as the guided portion.

11. A puncture device comprising:

a puncture needle cartridge having;

a rod-like lancet body having a puncture needle at one end with the other end being to be held by a puncture device body;

a protective cap for protecting the puncture needle and formed integrally with the lancet body; and

a puncture needle holder engaged with the lancet body;

a mounting member for holding the puncture needle cartridge such that the puncture needle cartridge can be inserted and removed; and

a case mounted with the mounting member and comprising the puncture device body,

wherein the case cooperates with the mounting member and rotates 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, and

wherein the protective cap is prevented from the rotation during the press and is separated from the lancet body with the rotation of the mounting member.