Compact structure of a new biosensor monitor

• US 7,179,233 B2
• Filed: 10/31/2003
• Issued: 02/20/2007
• Est. Priority Date: 10/31/2003
• Status: Expired due to Fees

• Current Assignee: Yu-Hong Chang
• Original Assignee: Yu-Hong Chang
• Inventors: Chang, Yu-Hong
• Primary Examiner(s): Hindenburg; Max F.
• Assistant Examiner(s): TOWA, RENE T
• Application Number:
  US10/697,303
• Publication Number:
  US 20050096565A1
• Time in Patent Office: 1,208 Days
• Field of Search: 600573-584, 600/316, 600/347, 600/365, 606/181, 435/14, 422/99
• US Class Current: 600/584
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150183 Depth adjustment mechanism using end caps mounted at the distal end of the sampling device, i.e. the end-caps are adjustably positioned relative to the piercing device housing for example by rotating or screwing
• 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 5/150854 long distance, e.g. between patient's home and doctor's office
• CPC Class Codes: A61B 5/15087 short range, e.g. between console and disposable using implanted devices A61B5/150877
• 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 5/15117 comprising biased elements, resilient elements or a spring, e.g. a helical spring, leaf spring, or elastic strap
• CPC Class Codes: A61B 5/15186 Devices loaded with a single lancet, i.e. a single lancet with or without a casing is loaded into a reusable drive device and then discarded after use; drive devices reloadable for multiple use
• 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

The invention discloses a biosensor monitor with a housing to accommodate a printed circuit board for data analysis from the electrochemical reaction on the test strip, a lancing device for blood inoculation which requires only one finger to activate the release of a lancet. This new monitor includes a biosensor monitor and the lancing device to make it more compact in size.

Claims

1. A biosensor monitor for use in measuring bioanalyte comprising:

a) a test strip;

b) a lancet;

c) a lower protective cover;

d) a lancing device having;

i) an inner tube connected to the lower protective cover and having inner tube teeth;

ii) a smaller spring;

iii) a connecting rod inserted into an interior of the inner tube and having a protrusion, the smaller spring biasing the connecting rod outwardly from the interior of the inner tube, the inner tube teeth engaging with and forcing the connecting rod to rotate within the inner tube as the connector rod moves axially within the inner tube;

iv) an adapter located between the smaller spring and the connecting rod, the adapter connecting the connecting rod to the smaller spring;

v) a larger spring located around the inner tube;

vi) an outer tube having an outer tube slope and outer tube teeth located on an inner wall thereof, the inner tube is partially inserted into an interior at a first end of the outer tube, the connecting rod, the adapter and the smaller spring are located in the interior of the outer tube, the protrusion of the connecting rod engaging the outer tube teeth and the inner tube teeth, the outer tube being pressed by the larger spring and selectively sliding toward the lancet cover and away from the inner tube, when a fingertip pushes on the lancet cover and hence the outer tube, the teeth on an inner rim of the outer tube forcing the protrusion of the connecting rod to rotate and trigger a release of the lancet holder, a lancet holder moving toward the fingertip; and

vii) a lancet holder located in the interior of a second end of the outer tube and having a lancet cover slope, the lancet is located in the lancet holder, a lancet holder engaging with the connecting rod, the lancet holder sliding along the interior of the outer tube without rotating as the connecting rod rotates, outer tube slope of the outer tube engaging with the lancet cover slope on the lancet cover and selectively adjusting a depth of the lancet; and

e) an upper protective cover connected to the lower protective cover and having;

i) an electronic circuit board located on an interior thereof and analyzing an electrochemical reaction of the test strip with a bioanalyte;

ii) an LCD monitor electrically connected to the electronic circuit board and displaying results from the electrochemical reaction of the test strip with the bioanalyte; and

iii) an opening, the test strip is removably inserted into the opening, the lancing device is located in an end of the upper housing;

f) a monitor cover having;

i) a protective cap connected to the upper protective cover and the lower protective cover and having a hole and a protrusion located on an inner rim of the hole; and

ii) a lancet cover located on an interior of the protective cap and having a plurality of grooves, a lancet cover slope, and a hole, the protrusion of the protective cap is located in a selected groove of the plurality of grooves, the lancet cover slope engaging the outer tube and selectively adjusting the depth of the lancet.

2. The biosensor monitor according to claim 1, further comprising a communication port located on the upper protective cover and the lower protective cover and electrically connected to the electronic circuit board.