Method for lancing a target site with applied pressure sensing

• US 20070060843A1
• Filed: 08/29/2005
• Published: 03/15/2007
• Est. Priority Date: 08/29/2005
• Status: Abandoned Application

• Current Assignee: LifeScan Scotland Limited (Johnson & Johnson)
• Original Assignee: LifeScan Scotland Limited (Johnson & Johnson)
• Inventors: Alvarez-Icaza, Manuel, McRiner, Derek, Syme, Steven
• Application Number:
  US11/214,655
• Publication Number:
  US 20070060843A1
• Time in Patent Office: Days
• US Class Current: 600/583
• CPC Class Codes: A61B 5/1411 by percutaneous method, e.g. by lancet
• 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 5/150954 Means for the detection of operative contact with patient, e.g. by temperature sensitive sensor
• CPC Class Codes: A61B 5/15109 Fully automatically triggered, i.e. the triggering does not require a deliberate action by the user, e.g. by contact with the patient's skin
• CPC Class Codes: A61B 5/6843 Monitoring or controlling sensor contact pressure

Abstract

A lancing method includes contacting a contact surface of a cap body distal end with a target site, the cap body distal end being included in a cap for a lancing device. The cap body is subsequently urged towards the target site such that a portion of the contact surface moves from a first position to a second position under a predetermined force, thereby creating a target site bulge is created within an opening of the cap body. A sensor of the cap is then employed to detect that the portion of the contact surface is in the second position and the sensor signals the lancing device upon such detection. The target site bulge is thereafter lanced with the lancing device.

Claims

1. A method for lancing a target site, the method comprising:

contacting at least a portion of a contact surface of a distal end of a cap body of a cap for a lancing device with a target site, wherein the cap for a lancing device includes;

a cap body with

a distal end with a target site contact surface;

a proximal end for attachment to a lancing device;

a opening through the cap body from the distal end to the proximal end of thereof and

at least one sensor,

wherein, at least a portion of the target site contact surface is moveable between a first position and a second position upon application of a predetermined pressure to the portion of the distal end contact surface, and

wherein the sensor is configured to detect movement of the portion of the distal end contact surface into the second position and communicate such detection to the lancing device;

urging the cap body towards the target site such that the portion of the contact surface moves from a first position to a second position under a predetermined applied pressure and a target site bulge is created within the cap body;

detecting, with the sensor, that the portion of the contact surface is in the second position;

signalling the lancing device that the portion of the contact surface is in the second position; and

lancing the target site bulge with the lancing device.

2. The method of claim 1, wherein the target site is a dermal tissue target site.

3. The method of claim 1, wherein the predetermined applied pressure is the result of applying a force in the range of from about 2 Newton to about 20 Newton.

4. The method of claim 1, wherein the lancing step is initiated following a delay after the signalling step.

5. The method of claim 4, wherein the delay is in the range of from about 0.5 seconds to 5 seconds.

6. The method of claim 4, wherein the delay is ascertained by a timer of the lancing device.

7. The method of claim 4, wherein the delay is varied from use-to-use of the lancing device.

8. The method of claim 4, wherein the delay has been optimized by artificial learning.

9. The method of claim 1, wherein the target site is a dermal tissue target site of a user'"'"'s finger.

10. The method of claim 9, wherein the predetermined applied pressure is the result of applying a force in the range of from about 15 Newton to about 18 Newton.