Puncture device

• US 20070167970A1
• Filed: 11/09/2006
• Published: 07/19/2007
• Est. Priority Date: 11/10/2005
• Status: Active Grant

• Current Assignee: Terumo Kabushiki Kaisha
• Original Assignee: Terumo Kabushiki Kaisha
• Inventors: Kawanishi, Tetsuro, Sonoda, Yutaro
• Granted Patent: US 7,611,492 B2
• Time in Patent Office: Days
• US Class Current: 606/185
• CPC Class Codes: A61B 17/34 Trocars; Puncturing needles pointed biopsy instruments A61B10/0233; devices for piercing the ear-lobes A44C7/001; seals or hemostasis valves A61M39/06
• CPC Class Codes: A61B 17/3403 Needle locating or guiding means guides for suture needles A61B17/0482; guiding or tracking by nuclear magnetic resonance G01R33/285
• CPC Class Codes: A61B 2017/3407 including a base for support on the body
• CPC Class Codes: A61M 2005/1585 Needle inserters
• CPC Class Codes: A61M 2005/3289 with rotation of the needle, e.g. to ease penetration
• CPC Class Codes: A61M 2005/341 angularly adjustable or angled away from the axis of the injector
• CPC Class Codes: A61M 2005/342 Off-center needles, i.e. needle connections not being coaxial with the longitudinal symmetry axis of syringe barrel
• CPC Class Codes: A61M 5/158 Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
• CPC Class Codes: A61M 5/3287 Accessories for bringing the needle into the body; Automatic needle insertion A61M5/20, A61M5/31525 take precedence
• CPC Class Codes: A61M 5/329 characterised by features of the needle shaft
• CPC Class Codes: A61M 5/46 having means for controlling depth of insertion

Abstract

A puncture device which can stick a puncture needle certainly to a predetermined region of a skin includes a puncture needle having a curvature portion, a retaining member retaining the puncture needle, an indwelling device adapted to be indwelled in a living body by way of the puncture needle, and a guide member mounted at a predetermined position of a body surface. The puncture needle is adapted to be stuck into the skin along the guide member.

Claims

1. In a puncture device puncturing a skin by a puncture needle, the puncture device comprising:

a device main body having a contact surface which contacts said skin;

a puncture needle having a curvature portion of a predetermined curvature radius; and

a puncture needle moving means provided in said device main body for moving said puncture needle along a circular trajectory which said curvature radius draws so as to puncture said skin.

2. In a puncture device puncturing a skin by a puncture needle, the puncture device comprising:

a puncture needle having a curvature portion;

a retaining member retaining the puncture needle;

an indwelling device indwelled in a living body by said puncture needle; and

a guide member mounted at a predetermined position of a body surface,

wherein said puncture needle is to be stuck to said skin along said guide member.

3. The puncture device according to claim 2, wherein a curved surface of such a shape along the curvature of said puncture needle is formed on said guide member.

4. The puncture device according to claim 3, wherein there is formed on said retaining member a curved surface of such a shape along a curved surface which is formed on said guide member.

10. The puncture device according to claim 2, wherein said puncture needle moves on a turning trajectory having a predetermined turning radius, and the needlepoint of said puncture needle moves at least until the lowest point of said turning trajectory.

5. In a puncture device puncturing a skin by a puncture needle, the puncture device comprising:

a hollow puncture needle having a curvature portion;

a retaining member retaining this puncture needle;

an indwelling device indwelled in a living body by said puncture needle;

a fixing member for fixing said indwelling device; and

a guide member mounted at a predetermined position of the body surface, wherein

said puncture needle punctures said skin along said guide member.

6. The puncture device according to claim 5, wherein a curved surface of such a shape along the curvature of said puncture needle is formed on said guide member.

7. The puncture device according to claim 6, wherein there is formed on said retaining member a curved surface of such a shape along a curved surface which is formed on said guide member.

11. The puncture device according to claim 5, wherein said puncture needle moves on a turning trajectory having a predetermined turning radius, and the needlepoint of said puncture needle moves at least until the lowest point of said turning trajectory.

8. In a puncture device puncturing a skin by a puncture needle, the puncture device comprising:

a puncture needle having a curvature portion;

a retaining member retaining this puncture needle; and

a guide member mounted at a predetermined position of a body surface, wherein

said puncture needle punctures said skin along said guide member.

9. The puncture device according to claim 8, wherein a dermis layer is positioned on the lower side of said guide member such that said puncture needle is stuck in a state in which a tip portion including the needlepoint of said puncture needle becomes approximately parallel with respect to the body surface.

12. The puncture device according to claim 8, wherein said puncture needle moves on a turning trajectory having a predetermined turning radius, and the needlepoint of said puncture needle moves at least until the lowest point of said turning trajectory.

13. In a puncture method puncturing a skin by a puncture needle, the puncture method using:

a device main body having a contact surface which contacts said skin;

a puncture needle having a curvature portion of a predetermined curvature radius; and

a puncture needle moving means provided in said device main body, comprising said puncture needle is made by said puncture needle moving means to move along a circular trajectory which said curvature radius draws so as to puncture said skin.