Integrated device for diagnostic purposes

• US 8,075,496 B2
• Filed: 01/27/2007
• Issued: 12/13/2011
• Est. Priority Date: 07/31/2004
• Status: Active Grant

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Roche Diagnostics Operations Incorporated (Roche Holding AG)
• Inventors: Deck, Frank, Doepper, Joachim, Hoerauf, Christian, Pachl, Rudolf, Rasch-Menges, Juergen, Scherer, Joerg, Schmelzeisen-Redeker, Guenther, Schmid, Wilfried, Schulat, Jochen, Thoes, Bruno, Winheim, Sven
• Primary Examiner(s): SZMAL, BRIAN SCOTT
• Application Number:
  US11/627,954
• Publication Number:
  US 20070219572A1
• Time in Patent Office: 1,781 Days
• Field of Search: 600/583, 600/584, 606181-183
• US Class Current: 600/583
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• 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 5/15111 Semi-automatically triggered, e.g. at the end of the cocking procedure, for instance by biasing the main drive spring or when reaching sufficient contact pressure, the piercing device is automatically triggered without any deliberate action by the user
• 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
• CPC Class Codes: A61B 5/15194 fully automatically retracted, i.e. the retraction does not require a deliberate action by the user, e.g. by terminating the contact with the patient's skin

Abstract

The present invention provides an integrated measuring device that includes a blood collection system for collecting blood for diagnostic purposes. The blood collection system comprises an electric motor which provides energy for propelling a lancet. The blood collection system comprises a mechanical energy store in which the electric energy that is converted by the motor is stored in the form of mechanical energy. The use of a mechanical energy store allows the use of known mechanical drive elements. The blood collection system can also be electrically activated and is thus easy to use for the operator. The motor can also be coupled to another system component, such as a test strip or lancet drum, to operate it.

Claims

1. A device for acquiring and analyzing a sample fluid, comprising:

a housing having an opening;

a lancet having a lancet body movably disposed in the housing;

a drive unit configured to propel the lancet body such that the tip of the lancet can at least partially protrude from the opening to perform a lancing process, the drive unit comprising;

a motor configured for contact with an electrical energy store;

a mechanical energy store coupled to the motor such that the electrical energy stored by the electrical energy store can be converted into mechanical energy and at least partially stored by the mechanical energy store; and

a coupling mechanism which couples the lancet body to the mechanical energy store, wherein the stored energy of the mechanical energy store can be at least partially transferred to the lancet body, the coupling mechanism comprising a mechanical motion converter which diverts the energy of the mechanical energy store onto the lancet body to move the lancet in a positively guided movement, the mechanical motion converter comprising a control guide block which is configured to guide the movement of the lancet; and

the motor being coupled to a functional component which is independent of the mechanical energy store, wherein the energy from the motor is configured to be diverted to the mechanical energy store and the functional component.

2. The device of claim 1, wherein the mechanical energy store is integrated as a solid body in the device.

3. The device of claim 2, wherein the mechanical energy store is a spring.

4. The device of claim 2, wherein the mechanical energy store is a mass.

5. The device of claim 1, wherein the mechanical motion converter has a cross-slip gear unit.

6. The device of claim 1, wherein the motor has a gear unit which couples the motor to the mechanical energy store.

7. The device of claim 6, wherein the gear unit is a bevel gearing.

8. The device of claim 1, wherein the motor has a clutch which couples the motor to the mechanical energy store.

9. The device of claim 8, wherein the motor is controlled as a function of current.

10. The device of claim 8, wherein the clutch transfers a torque of at least 10 mNm to the mechanical energy store.

11. The device of claim 8, wherein the clutch is controlled by torque or angle of rotation.

12. The device of claim 1, wherein the coupling mechanism comprises a clutch.

13. The device of claim 1, wherein the electric motor comprises a piezoelectric motor or an external rotor motor.

14. The device of claim 1, wherein the energy for the mechanical energy store and the energy for the functional component that is independent of the energy store are provided simultaneously or independently of one another.

15. The device of claim 1, wherein the functional component that is independent of the energy store is a test element transport or a magazine transport.

16. The device of claim 1, wherein several test elements are stored in a magazine in the device.

17. A device for obtaining and analyzing a body fluid sample, comprising:

a housing;

a lancet body movably disposed in the housing, the lancet body defining a lancet having a tip;

a motor;

a mechanical energy store coupled to the motor, wherein energy from the motor is configured to be transferred to and stored by the mechanical energy store, the mechanical energy store being configured to release the stored energy to move the lancet body in a puncturing motion;

a control guide block which is configured to guide the movement of the lancet; and

an auxiliary functional component coupled to the motor, wherein additional energy from the motor is configured to be transferred to and used by the auxiliary functional component, wherein the energy from the motor is configured to be diverted to the mechanical energy store and the auxiliary functional component.

18. The device of claim 17, wherein the auxiliary functional component comprises a test element transport or a magazine transport.

19. The device of claim 17, wherein the auxiliary functional component comprises a magazine transport, the device further comprising a magazine in which several test elements are stored.

20. The device of claim 19, wherein the magazine is rotatably disposed in the housing.

21. The device of claim 17, wherein the motor is controlled as a function of current.

22. The device of claim 17, wherein the mechanical energy store comprises a spring which is tensioned by the motor.

23. The device of claim 17, wherein the mechanical energy store comprises a rotating mass that is rotated by the motor.

24. The device of claim 17, wherein the motor has a clutch which couples the motor to the mechanical energy store.

25. A method of operating an integrated testing device of the type having a lancet drive with a lancet for puncturing skin and a transport for transporting test elements, the method comprising:

providing a mechanical energy store configured to drive the lancet drive;

coupling a motor to the mechanical energy store and to the transport;

transferring energy from the motor to advance the transport and to the mechanical energy store, the energy transferred to the mechanical energy store being at least partially stored; and

releasing the stored energy of the mechanical energy store through a controlled guide block to the lancet to drive the lancet in a positively guided puncturing movement.

26. The method of claim 25, wherein the step of advancing the transport comprises advancing a test tape.

27. The method of claim 25, wherein the step of advancing the transport comprises rotating a magazine containing test elements.

28. The method of claim 25, further comprising providing a clutch operable to transfer energy from the motor to the mechanical energy store or to transfer energy from the mechanical energy store to the lancet body.

29. A device for obtaining and analyzing a body fluid sample, comprising:

a housing;

a lancet body movably disposed in the housing, the lancet body defining a lancet having a tip;

a motor;

a mechanical energy store coupled to the motor, wherein energy from the motor is configured to be transferred to and stored by the mechanical energy store, the mechanical energy store being configured to release the stored energy to move the lancet body in a puncturing motion;

an auxiliary functional component coupled to the motor, wherein additional energy from the motor is configured to be transferred to and used by the auxiliary functional component, wherein the energy from the motor is configured to be diverted to the mechanical energy store and the auxiliary functional component; and

a clutch operable to transfer energy from the motor to the mechanical energy store or to transfer energy from the mechanical energy store to the lancet body.

30. The device of claim 29, wherein the clutch couples the motor to the mechanical energy store.

31. The device of claim 29, wherein the clutch couples the mechanical energy store to the lancet body.

32. The device of claim 29, wherein the mechanical energy store comprises a solid body in the device.

33. The device of claim 32, wherein the mechanical energy store comprises a spring.

34. The device of claim 32, wherein the mechanical energy store comprises a mass.

35. The device of claim 29, wherein the motor is controlled as a function of current.

36. The device of claim 29, wherein the clutch transfers a torque of at least 10 mNm to the mechanical energy store.

37. The device of claim 29, wherein the clutch is controlled by torque or angle of rotation.

38. The device of claim 29, wherein the energy for the mechanical energy store and the energy for the auxiliary functional component are provided simultaneously.

39. The device of claim 29, wherein the energy for the mechanical energy store and the energy for the auxiliary functional are provided independently.