Pricking system

• US 8,753,289 B2
• Filed: 11/16/2009
• Issued: 06/17/2014
• Est. Priority Date: 05/16/2007
• Status: Expired due to Fees

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Roche Diagnostics Operations Incorporated (Roche Holding AG)
• Inventors: Konya, Ahmet, Harttig, Herbert
• Primary Examiner(s): Towa, Rene
• Assistant Examiner(s): ABOUELELA, MAY A
• Application Number:
  US12/619,420
• Publication Number:
  US 20100094325A1
• Time in Patent Office: 1,674 Days
• Field of Search: 600582-583, 600/573, 600/584, 606181-184
• US Class Current: 600/573
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150175 Adjustment of penetration depth
• CPC Class Codes: A61B 5/150358 Strips for collecting blood, e.g. absorbent optical reagent test strips G01N21/8483; chemical reagent test strips G01N33/4875, G01N33/52
• 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 5/15117 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 5/1513 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 5/157 Devices characterised by integrated means for measuring characteristics of blood

Abstract

A pricking system includes lancets for producing a prick wound, sampling devices for collecting a sample of a body fluid from the prick wound, a housing having an opening for application of a body part in which the prick wound is to be produced, a drive arranged in the housing for moving one of the lancets to produce the prick wound and to then move one of the sampling devices to the prick wound so produced, a coupling part for coupling to the drive one of the lancets for a pricking movement and then coupling to the drive one of the sampling devices for a sampling movement, the coupling part being moved, during the pricking movement and the sampling movement, respectively, from a starting position into an end position by an advancing movement, and from the end position back into the starting position by a reversing movement, respectively, and a motion control which, during the sampling movement, causes the coupling part to reach an end position that differs from the end position reached by the coupling part during the pricking movement, wherein the end position reached by the coupling part in the sampling movement is laterally displaced relative to the end position reached by the coupling part in the prickling movement.

Claims

1. A pricking system comprising:

lancets for producing a prick wound;

sampling devices for collecting a sample of a body fluid from the prick wound;

a housing having an opening for application of a body part in which the prick wound is to be produced;

a drive arranged in the housing for moving one of the lancets to produce the prick wound and to then move one of the sampling devices to the prick wound so produced;

a coupling part for coupling to the drive one of the lancets for a pricking movement and then coupling to the drive one of the sampling devices for a sampling movement, the coupling part being moved, during the pricking movement and the sampling movement, respectively, from a starting position into an end position by an advancing movement, and from the end position back into the starting position by a reversing movement, respectively; and

a motion control which, during the sampling movement, causes the coupling part to reach an end position that differs from the end position reached by the coupling part during the pricking movement, wherein the end position reached by the coupling part in the sampling movement is laterally displaced relative to the end position reached by the coupling part in the pricking movement.

2. The pricking system of claim 1 wherein the coupling part performs a longer travel in the sampling movement than in the pricking movement.

3. The pricking system of claim 1 further comprising a transport facility for transporting one of the sampling devices to the coupling part after a pricking operation by moving the sampling device in a transport direction.

4. The pricking system of claim 3 wherein the coupling part reaches the end position in the sampling movement that is displaced transversely to the transport direction relative to the end position reached by the coupling part in the pricking movement.

5. The pricking system of claim 1 wherein the sampling device comprises a test field with test chemicals for testing the collected sample of the body fluid.

6. The pricking system of claim 1

wherein the lancets and the sampling devices are arranged on a carrier tape.

7. The pricking system of claim 6 wherein the carrier tape is bent in lengthwise direction during the pricking movement and during the sampling movement.

8. The pricking system of claim 6 wherein the motion control comprises a cam control with a first cam for the pricking movement and a second cam for the sampling movement.

9. The pricking system of claim 6 wherein the motion control comprises a deflection plane which can be adjusted transversely to the pricking direction and which extends obliquely to the pricking direction in order to deflect the coupling part transversely to the pricking direction by sliding along the deflection plane.

10. The pricking system of claim 9, wherein the deflection plane is connected with an adjusting element for adjusting the pricking depth, which element comprises a bottom surface, facing the body part during the pricking operation, and an upper surface with a stop surface against which the coupling part abuts during a pricking operation, the stop element having an extension in the pricking direction, from the stop surface to the bottom surface, that varies transversely to the pricking direction with the result that the length by which the tip of one of the lancets will project beyond the bottom surface of the stop element during the pricking operation can be adjusted by moving the stop element transversely to the pricking direction.

11. The pricking system of claim 6 wherein the coupling part is laterally deflected during the advancing step of the sampling movement.

12. The pricking system of claim 6 wherein the housing comprises a receptacle for an exchangeable supply of lancets and sampling devices.