Gimbaled bladder actuator for use with test strips

• US 6,866,822 B1
• Filed: 08/11/2000
• Issued: 03/15/2005
• Est. Priority Date: 08/11/2000
• Status: Expired due to Term

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Lifescan Incorporated (Duv Holding Corporation)
• Inventors: House, Allen, Olson, Lorin
• Primary Examiner(s): ALEXANDER, LYLE
• Application Number:
  US09/637,504
• Time in Patent Office: 1,677 Days
• Field of Search: 422/61, 422/99, 422101-104, 422/82.05, 422/55, 436/43, 436/46, 436/48, 436/165, 356/244, 356/36
• US Class Current: 422/82.05
• CPC Class Codes: B01L 2300/0825 Test strips
• CPC Class Codes: B01L 2300/0864 comprising only one inlet and multiple receiving wells, e.g. for separation, splitting
• CPC Class Codes: B01L 2400/0481 squeezing of channels or chambers
• CPC Class Codes: B01L 2400/0688 surface tension valves, capillary stop, capillary break
• CPC Class Codes: B01L 3/50273 characterised by the means or forces applied to move the fluids micropumps F04B19/006, of the membrane type F04B43/043
• CPC Class Codes: B01L 9/52 Supports specially adapted for flat sample carriers, e.g. for plates, slides, chips
• CPC Class Codes: Y10T 436/114165 with step of insertion or removal from test line

Abstract

Gimbaled bladder actuators and methods for their use in compressing bladders present on test strips are provided. The subject actuators are characterized by the presence of a gimbaled compression pad under movement control of an actuating means, preferably an automated actuating means. Also provided are meters for reading test strips that include bladders, where the meters include the subject gimbaled bladder actuators.

Claims

1. A meter adapted to receive a test strip including a bladder, wherein said meter comprises a gimbaled bladder actuator, said gimbaled bladder actuator comprising:

a gimbaled compression pad comprising a holder and a compression member including a substantially planar compression element wherein said holder is attached to said meter at a gimbaled interface; and

an actuator in contact with said holder for contacting said gimbaled compression pad with said bladder in a manner sufficient to compress said bladder by movement of said actuator when said test strip is positioned in said meter.

2. The gimbaled bladder actuator according to claim 1, wherein said actuator comprises a lever arm under the control of an automatic movement means.

3. The gimbaled bladder actuator according to claim 2, wherein said automatic movement means comprises a solenoid.

4. The gimbaled bladder actuator according to claim 2, wherein said lever arm is attached to said movement means by a chassis.

5. A meter adapted to receive a test ship including a bladder, wherein said meter comprises a gimbaled bladder actuator, said gimbaled bladder actuator comprising:

(a) a gimbaled compression pad comprising a holder and a compression member including a substantially planar compression element wherein said holder is attached to said meter at a gimbaled surface; and

(b) actuator in contact with said holder for contacting said gimbaled compression pad with said bladder in a manner sufficient to compress said bladder by movement of said actuator when said test strip is positioned in said meter, wherein said actuating means comprises;

(i) a lever arm;

(ii) a chassis; and

(iii) a solenoid.

6. The gimbaled bladder actuator according to claim 5, wherein said gimbaled compression pad has an actual area ranging from about 0.19 square inches to 0.21 square inches.

7. The gimbaled bladder actuator according to claim 5, wherein said arm moves said gimbaled compression pad against a bladder in a manner sufficient to apply uniform pressure to said bladder.

8. The gimbaled bladder actuator according to claim 5, wherein said gimbaled compression pad is capable of placing a compressive force on a bladder ranging from about 1 lb to about 1.5 lb.

9. An automatic meter for reading a test strip including a bladder, said meter comprising:

a gimbaled bladder actuator, wherein said gimbaled bladder actuator comprises;

(a) a gimbaled compression pad comprising a holder and a compression member including a substantially planar compression element wherein said holder is attached to said meter at a gimbaled interface; and

(b) an actuator in contact with said holder for contacting said gimbaled compression pad with said bladder in a manner sufficient to compress said bladder by movement of said actuator when said test strip is positioned in said meter.

10. The automatic meter according to claim 9, wherein said actuator comprises a lover arm under the control of an automatic movement means.

11. The automatic meter according to claim 10, wherein said automatic movement means is a solenoid movement means.

12. The automatic meter according to claim 10, wherein said lever arm is attached to said movement means by a chassis.

13. The automatic meter according to claim 9, wherein said gimbaled compression pad has an actual area ranging from about 0.19 square inches to 0.21 square inches.

14. The automatic meter according to claim 9, wherein said arm moves said gimbaled compression pad against a bladder in a manner sufficient to apply uniform pressure to said bladder.

15. The automatic meter according to claim 9, wherein said gimbaled compression pad is capable of placing a compressive force on a bladder ranging from about 1 lb to 1.5 lb.