Lancing device for obtaining samples of body fluid

• US 9,763,611 B2
• Filed: 06/18/2013
• Issued: 09/19/2017
• Est. Priority Date: 08/22/2012
• Status: Active Grant

• Current Assignee: Gerresheimer Regensburg GmbH (Gerresheimer AG)
• Original Assignee: Gerresheimer Regensburg GmbH (Gerresheimer AG)
• Inventors: Strehl, Michael
• Primary Examiner(s): Henson, Devin
• Assistant Examiner(s): MELHUS, BENJAMIN S
• Application Number:
  US14/422,674
• Publication Number:
  US 20150265199A1
• Time in Patent Office: 1,554 Days
• Field of Search: None
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150183 Depth adjustment mechanism using end caps mounted at the distal end of the sampling device, i.e. the end-caps are adjustably positioned relative to the piercing device housing for example by rotating or screwing
• 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 5/150503 Single-ended needles hollow piercing element tip design A61B5/150396, needle sets for catheters A61M25/06, needles for bringing media into the body A61M5/32
• CPC Class Codes: A61B 5/150641 comprising means to impede repositioning of protection sleeve from covering to uncovering position
• CPC Class Codes: A61B 5/150961 Means for the detection of the presence or absence of a module, a component or an abnormal condition; detection of leaks
• 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 5/15115 Driving means for propelling the piercing element to pierce the skin, e.g. comprising mechanisms based on shape memory alloys, magnetism, solenoids, piezoelectric effect, biased elements, resilient elements, vacuum or compressed fluids
• 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 5/1513 comprising linear sliding guides comprising tooth-shaped elements A61B5/15132
• CPC Class Codes: A61B 5/15146 Devices loaded with multiple lancets simultaneously, e.g. for serial firing without reloading, for example by use of stocking means. multiple simultaneous cutting or piercing A61B5/150977
• CPC Class Codes: A61B 5/15153 Multiple piercing elements stocked in a single compartment
• CPC Class Codes: A61B 5/15163 Characterized by propelling the piercing element in an axial direction relative to the disc
• CPC Class Codes: A61B 5/15169 Characterized by a rolled strip
• CPC Class Codes: A61B 5/15173 Characterized by propelling the piercing element parallel to the direction of movement of the strip

Abstract

The invention relates to a lancing device (1) for obtaining bodily fluid samples, comprising a base body (3), on one longitudinal-face end (6) of which a removable cap (12) is arranged which has a positioning face (8) with an outlet opening (7), a lancet magazine (4) for receiving at least one lancet (5), which is held replaceably in the base body (3), a drive device (14) for moving a lancet (5) arranged in the lancet magazine (4) back and forth in the direction of the longitudinal axis (2), said lancet being positioned therein in such a way that the tip thereof can exit the outlet opening (7) during the movement back and forth, wherein the lancet magazine (4) has a locking element (30) and the cap (12) has an unlocking element (31) formed to engage in the locking element (30).

Claims

1. A lancing device for obtaining bodily fluid samples, comprising

a) a base body, which is rotationally symmetrical about the longitudinal axis thereof, on one longitudinal-face end of which a removable cap is arranged which has a positioning face with a first outlet opening,

b) a lancet magazine for receiving at least one lancet, which is held replaceably in the base body,

c) a drive device for moving a lancet arranged in the lancet magazine back and forth in the direction of the longitudinal axis, said lancet being positioned therein in such a way that the tip thereof can exit the first outlet opening during the movement back and forth,

wherein the lancet magazine has a locking element and the cap has an unlocking element formed to engage in the locking element,

wherein the locking element is positioned flat on a locking tab in a locking position, and two side regions of the locking element are braced on bracing elements of the drive device and of the lancet magazine, and

wherein upon engaging in the locking element, the unlocking element transfers said locking element into an unlocked position, in which the locking element is raised from the locking tab and the side regions of the locking element are disengaged from at least one of the bracing elements of the drive device and of the lancet magazine.

2. The lancing device according to claim 1, wherein the locking element is in the form of a spring element and the unlocking element is in the form of a pin.

3. The lancing device according to claim 2, wherein the spring element and the pin comprise mutually adapted ramp slopes.

4. The lancing device according to claim 2, wherein the locking element is in the form of a leaf spring element.

5. The lancing device according to claim 1, wherein an outer magazine housing is provided for the lancet magazine, which comprises a second outlet opening corresponding to the first outlet opening.

6. The lancing device according to claim 5, wherein the outer magazine housing comprises an end face, which contains the second outlet opening and an opening for the unlocking element of the cap and forms the bracing element of the lancet magazine.

7. The lancing device according to claim 1, wherein the drive device comprises a drive plunger and a release plunger, which can be coupled to and decoupled from a needle of whichever lancet is positioned in such a way that the tip thereof can exit the first outlet opening during the movement back and forth.

8. The lancing device according to claim 1, wherein the base body has a tensioning element for tensioning the drive device and a trigger element for slackening the drive device.

9. The lancing device according to claim 1, wherein a clock device is provided, which is formed to move the lancet, which is positioned in such a way that the tip thereof can exit the first outlet opening during the movement back and forth, out of a position of the lancet in a guidance path of the lancet magazine and to move an adjacent lancet into a position in a guidance path of the lancet magazine.

10. The lancing device according to claim 9, wherein the clock device is formed to be manually operable by means of a clock trigger element or the clock device is formed in such a way that it repositions the lancets automatically.

11. The lancing device according to claim 10, wherein the clock device repositions the lancets by way of a spring mechanism or an electric motor.