Puncture device

• US 8,308,747 B2
• Filed: 11/27/2008
• Issued: 11/13/2012
• Est. Priority Date: 11/27/2007
• Status: Active Grant

• Current Assignee: ARKRAY, Inc
• Original Assignee: ARKRAY, Inc
• Inventors: Fukuzawa, Masahiro
• Primary Examiner(s): Houston, Elizabeth
• Application Number:
  US12/734,841
• Publication Number:
  US 20100312266A1
• Time in Patent Office: 1,447 Days
• Field of Search: 606181-183, 606/185, 600564-567
• US Class Current: 606/181
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150198 Depth adjustment mechanism at the proximal end of the carrier of the piercing element
• 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 5/15061 by material engagement, e.g. welding, bonding
• CPC Class Codes: A61B 5/150717 manually removed
• CPC Class Codes: A61B 5/15113 Manually triggered, i.e. the triggering requires a deliberate action by the user such as pressing a drive button
• CPC Class Codes: A61B 5/15117 comprising biased elements, resilient elements or a spring, e.g. a helical spring, leaf spring, or elastic strap
• CPC Class Codes: A61B 5/15128 comprising 2D- or 3D-shaped elements, e.g. cams, curved guide rails or threads comprising tooth-shaped elements A61B5/15132
• CPC Class Codes: A61B 5/1519 comprising driving means, e.g. a spring, for propelling the piercing unit

Abstract

The present invention relates to a puncture device 1 for moving a puncture element 21 in a piercing direction N1 and for piercing a target site with the puncture element 21. The puncture device 1 is for moving a second member 42 retaining the puncture element 21 in the direction N1 and in a direction N2 by the rotational motion of a third member 40 as a first member 41 moves in the directions N1 and N2. The puncture device 1 further comprises a piercing depth adjusting mechanism 6 of adjusting a piercing depth of the puncture element 21 to the target site by regulating a rotation angle of the third member 40.

Claims

1. A puncture device for moving a puncture element in a piercing direction toward a target site and for piercing the target site with the puncture element, the puncture device comprising:

a first member which is movable in the piercing direction and in an evacuating direction opposite to the piercing direction;

a second member which is for retaining the puncture element, and which is movable in the piercing direction and in the evacuating direction; and

a third member which is rotated as the first member moves, and is for moving the second member in the piercing direction and in the evacuating direction by a rotational motion, the puncture device further comprising;

a piercing depth adjusting mechanism of adjusting a piercing depth of the puncture element to the target site by regulating a rotation angle of the third member,

wherein the piercing depth adjusting mechanism includes an engaging part for engaging with the third member, and includes a displacement member for displacing an engaging position of the engaging part in the third member;

the first member includes a recess with an inclination part inclined relative to the piercing direction and to the evacuating direction; and

the engaging part engages with the first member at the recess.

3. The puncture device according to claim 1, wherein the piercing depth adjusting mechanism further includes an operation member for adjusting a position of the displacement member.

4. The puncture device according to claim 3, wherein the piercing depth adjusting mechanism includes a protruding part provided at either one of the displacement member and the operation member, and a recess provided at the other member, and

the protruding part and the recess engage with each other, and has a relative position changeable.

5. The puncture device according to claim 3, wherein the operation member is for adjusting the position of the displacement member by a rotating operation.

6. The puncture device according to claim 3, wherein a moving amount of the displacement member relative to an operation amount of the operation member is in a nonlinear relation.

7. The puncture device according to claim 1, wherein the displacement member is for displacing an engaging position of the engaging part in the third member in the piercing direction and in the evacuating direction.

8. The puncture device according to claim 1, wherein the third member includes a rotating shaft with a fixed position, a movable part which is rotatable around the rotating shaft, and which causes the second member to followingly move relative to the rotational motion of the third member, and a hole for allowing positional displacement of the engaging part.

9. The puncture device according to claim 1, wherein

the inclination part is a bending part including the first inclination part and the second inclination part which are inclined to different directions and are continuously connected to each other, and

the recess further includes a straight line part extending in the piercing direction and in the evacuating direction and connecting both ends of the bending part to each other.

10. The puncture device according to claim 9, further comprising a housing for retaining from the first member to the third member, wherein

the first member is engaged with the housing as the first member is moved relative to the housing in the evacuating direction, and is for moving the second member in the piercing direction by releasing latching, and

the engaging part moves through the straight line part when the first member is moved relative to the housing in the evacuating direction.

11. The puncture device according to claim 1, further comprising a housing for retaining the first member, the second member and the third member, wherein

with the puncture element being retained in a casing, the puncture element is retained in the second element when attached in the housing, and, when the casing is detached from the housing, the puncture element is detached from the second member and is bound in the casing so as to prevent a leading end of the puncture element from protruding from the casing.

2. A puncture device for moving a puncture element in a piercing direction toward a target site and for piercing the target site with the puncture element, the puncture device comprising:

a first member which is movable in the piercing direction and in an evacuating direction opposite to the piercing direction;

a second member which is for retaining the puncture element, and which is movable in the piercing direction and in the evacuating direction; and

a third member which is rotated as the first member moves, and is for moving the second member in the piercing direction and in the evacuating direction by a rotational motion, the puncture device further comprising;

a piercing depth adjusting mechanism of adjusting a piercing depth of the puncture element to the target site by regulating a rotation angle of the third member,

wherein the piercing depth adjusting mechanism includes an engaging part for engaging with the third member, and includes a displacement member for displacing an engaging position of the engaging part in the third member; and

the third member includes a rotating shaft with a fixed position, a movable part which is rotatable around the rotating shaft, and which causes a second member to followingly move relative to a rotational motion of the third member, and a hole for allowing positional displacement of the engaging part.