SENSOR DEVICE

• US 20100228149A1
• Filed: 02/25/2008
• Published: 09/09/2010
• Est. Priority Date: 02/26/2007
• Status: Abandoned Application

• Current Assignee: National Institute of Advanced Industrial Science and Technology (Government of Japan), Sumitomo Electric Industries Limited (Sumitomo Corporation)
• Original Assignee: National Institute of Advanced Industrial Science and Technology (Government of Japan), Sumitomo Electric Industries Limited (Sumitomo Corporation)
• Inventors: Fujimura, Tsuyoshi, Nakamura, Hideaki, Gotoh, Masao, Karube, Isao, Ishikawa, Tomoko, Nakajima, Hiroto, Hayami, Hiroshi, Hosoya, Toshifumi, Kitamura, Takahiko, Kaimori, Shingo
• Application Number:
  US12/528,660
• Publication Number:
  US 20100228149A1
• Time in Patent Office: Days
• US Class Current: 600/583
• CPC Class Codes: A61B 2562/0295 Strip shaped analyte sensors for apparatus classified in A61B5/145 or A61B5/157 disposable multilayered or laminated electrodes G01N27/307; details of handling chemical test elements G01N33/4875
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/1468 using chemical or electrochemical methods, e.g. by polarographic means A61B5/1486 takes precedence
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150068 by tissue compression, e.g. with specially designed surface of device contacting the skin area to be pierced
• CPC Class Codes: A61B 5/150099 by negative pressure, other than vacuum extraction into a syringe by pulling on the piston rod or into pre-evacuated tubes
• CPC Class Codes: A61B 5/150213 Venting means
• 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 5/150519 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 5/150633 Protective sleeves which are axially extensible, e.g. sleeves connected to, or integrated in, the piercing or driving device; pivotable protective sleeves
• CPC Class Codes: A61B 5/150702 fully automatically removed, i.e. the removing does not require any 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 5/1513 comprising linear sliding guides 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
• CPC Class Codes: A61B 5/157 Devices characterised by integrated means for measuring characteristics of blood

Abstract

A sensor device has a needle-integrated type sensor element which is detachably mounted therein and which has a sensor chip, a lancet needle fixed to an end portion of the sensor chip, and a flow path forming element provided compressibly and restorably at the end portion of the sensor chip, to which the lancet needle is fixed. The sensor device includes a puncture mechanism (a drive spring) configured to cause the sensor element to puncture a target, and a pressing mechanism (a pressure spring) configured to urge the sensor element to the extent that the sensor element is prevented from being detached from the target by a restoring force of the flow path forming element after the target is punctured.

Claims

1. A sensor device for detachably mounting a needle-integrated type sensor element, the sensor element having a sensor chip, a lancet needle fixed to an end portion of the sensor chip, and a flow path forming element provided compressibly and restorably at the end portion of the sensor chip, to which the lancet needle is fixed,

the sensor device comprising:

a puncture mechanism for causing the sensor element to puncture a target; and

a pressing mechanism, which is different from the puncture mechanism, for urging the sensor element to an extent that the sensor element is prevented from being detached from the target by a restoring force of the flow path forming element after the target is punctured.

2. The sensor device according to claim 1, further comprising:

a cap element provided with an opening for causing the lancet needle to puncture the target, wherein

when the target is detached from the opening of the cap element after the target is punctured, the pressing mechanism urges the sensor element to an extent that at least a front surface of the flow path forming element is protruded from the opening of the cap element.

3. The sensor device according to claim 1, wherein

the pressing mechanism and/or the puncture mechanism includes a spring mechanism.

4. The sensor device according to claim 1, wherein

the flow path forming element is made of a polymer material having airtightness and elasticity.

5. The sensor device according to claim 1, wherein

the sensor chip comprises a cover and a substrate, each of which is formed of a plate member, and

a sample space in which a sample and a reagent layer react with each other is provided between the cover and the substrate.

6. A sensor device having a needle-integrated type sensor element detachably mounted therein, the sensor element having a biosensor chip, and a lancet needle fixed to one end portion of the biosensor chip,

the sensor device comprising:

a puncture mechanism for forming an airtight space by applying a puncture target surface thereto and for causing the sensor element to hit the puncture target surface in the airtight space; and

a decompressing mechanism for decompressing the enclosed airtight space, wherein

the airtight space is decompressed by driving the decompressing mechanism; and

a sample is guided into a sample space from a sample introduction opening of the biosensor chip.

7. The sensor device according to claim 6, further comprising:

a detection mechanism for detecting that a sample is guided into the sample space in a state in which the airtight space is maintained; and

a decompression release mechanism for releasing the inside of the puncture mechanism chamber to atmospheric pressure with interlocking with the detection mechanism.

8. The sensor device according to claim 6, wherein

the decompressing mechanism comprises:

a piston mechanism;

a spring mechanism for driving the piston mechanism; and

wherein

a cylinder chamber constitutes the piston mechanism.

9. The sensor device according to claim 6, wherein

the puncture mechanism comprises a spring mechanism.

10. The sensor device according to claim 6, wherein

the biosensor chip comprises a cover and a substrate, each of which is formed of a plate member, and

a sample space in which a sample and a reagent layer react with each other is provided between the cover and the substrate.