Puncture device

• US 7,611,492 B2
• Filed: 11/09/2006
• Issued: 11/03/2009
• Est. Priority Date: 11/10/2005
• Status: Expired due to Fees

• Current Assignee: Terumo Kabushiki Kaisha (Terumo Corporation)
• Original Assignee: Terumo Kabushiki Kaisha (Terumo Corporation)
• Inventors: Sonoda, Yutaro, Kawanishi, Tetsuro
• Primary Examiner(s): Sirmons; Kevin C.
• Assistant Examiner(s): WITCZAK, CATHERINE
• Application Number:
  US11/594,925
• Publication Number:
  US 20070167970A1
• Time in Patent Office: 1,090 Days
• Field of Search: 604/174, 604/175, 604/180, 604272-274, 604158-161, 604/164.01, 604/164.04, 604/164.07, 604/164.09, 604/239, 604/159, 604/171, 606/185, 606/213, 128/DIG.26
• US Class Current: 604/164.04
• 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. A puncture device for 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 needlepoint and a curvature portion curved along the lengthwise direction of the puncture needle and possessing a predetermined curvature radius;

an indwelling device configured to be indwelled in a living body by said puncture needle; 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 that the puncture needle punctures said skin,

wherein the puncture device is configured to prevent the needlepoint from protruding out of a surface of the skin while the puncture needle punctures the skin.

5. The puncture device according to claim 1, 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.

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

a puncture needle having a needlepoint and a curvature portion curved along the lengthwise direction of the puncture needle;

a retaining member for retaining the puncture needle;

an indwelling device configured to be 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 configured to move along said guide member to puncture said skin, and

wherein the puncture device is configured to prevent the needlepoint from protruding out of a surface of the skin while the puncture needle punctures the skin.

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.

6. 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.

7. The puncture device according to claim 2, 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.

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

curved along the lengthwise direction of the puncture needle;

a retaining member for retaining this puncture needle;

an indwelling device configured to be 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 is configured to move along said guide member to puncture said skin.

9. The puncture device according to claim 8, wherein a curved surface of such a shape along the curvature of said puncture needle is formed on said guide member.

10. The puncture device according to claim 9, 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 8, wherein said puncture needle moves on a turning trajectory having a predetermined turning radius, and a needlepoint of said puncture needle moves at least until the lowest point of said turning trajectory.

12. A puncture method for 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 needlepoint and a curvature portion curved along the lengthwise direction of the puncture needle and possessing a predetermined curvature radius;

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

a puncture needle moving means provided in said device main body, the method comprising moving said puncture needle by said puncture needle moving means to move along a circular trajectory which said curvature radius draws so that the puncture needle punctures said skin while the needlepoint is prevented from protruding out of a surface of the skin.

13. A method of puncturing skin comprising:

positioning a puncture device relative to skin such that a contact surface of a device main body of the puncture device contacts skin, the puncture device also comprising a puncture needle having a needlepoint and a curvature portion curved along the lengthwise direction of the puncture needle and possessing a curvature radius the puncture device also comprising an indwelling device configured to be indwelled in a living body by said puncture needle;

moving the puncture needle along a circular trajectory which the curvature radius draws to puncture the skin at a first point with the needlepoint;

moving the puncture needle along the circular trajectory to withdraw the puncture needle from the skin; and

wherein, between a time when the needlepoint punctures the skin at the first point and a time when the puncture needle is withdrawn from the skin, the needlepoint does not protrude out of the skin.