Apparatus intended for dispensing successive zones of a disposable strip

• US 5,797,693 A
• Filed: 04/29/1996
• Issued: 08/25/1998
• Est. Priority Date: 05/02/1995
• Status: Expired due to Fees

• Current Assignee: Asulab SA (The Swatch Group AG)
• Original Assignee: Asulab SA (The Swatch Group AG)
• Inventors: Jaeger, Gerard
• Primary Examiner(s): Knight, Anthony
• Application Number:
  US08/639,901
• Time in Patent Office: 848 Days
• Field of Search: 74/527, 271/267, 271/266, 271/84, 403/24
• US Class Current: 403/24
• CPC Class Codes: B01L 99/00 Subject matter not provided for in other groups of this subclass
• CPC Class Codes: B65D 83/087 by means of an actuator
• CPC Class Codes: G01N 33/48757 Test elements dispensed from a stack
• CPC Class Codes: Y10T 74/20636 Detents

Abstract

An apparatus for dispensing multizone disposable testing strips which are inserted in the apparatus by a user. The apparatus has, for the strips (34), a circulation passage (29) in which a cursor (35) is able to slide, each strip being able to be coupled to the cursor. Ratchet members (54, 57, 62a to 65), associated with a driving member attached to the cursor, are arranged so as to enable the step by step movement of the cursor in the direction of the opening (28) of the passage (29) from any position in which the cursor can be, this being achieved via a direct driving of the cursor. Accordingly, it is always possible to bring the cursor back into a position where it is near said opening. The apparatus can be applied to object dispensing devices, such as medical tablets, or to blood sugar level measuring devices.

Claims

1. A dispensing apparatus requiring the use of disposable elements having the shape of strips to operate, each of these strips comprising in the longitudinal direction several successive utilization zones adapted to be detached from the strip after their use, said apparatus comprising:

a case defining a circulation passage for said strips, said passage having, taking account of the direction in which said strips are introduced, an upstream end and a downstream end;

a forward feed mechanism for bringing said strip out of the circulation passage in accordance with a step by step movement after its introduction into the circulation passage by a user;

a sliding unit, mounted so as to move in said passage, operationally coupled to said forward feed mechanism and adapted to be coupled to the downstream end of said strip when it is introduced by the user; and

coupling means carried by said sliding unit and arranged so as to assure the coupling between the latter and said strip;

said sliding unit comprising a cursor mounted so as to slide in said circulation passage and provided with a driving member, said forward feed mechanism comprising ratchet means adapted to co-operate with said driving member to assure said coupling and to enable the step by step forward feed of said cursor, and said ratchet means being coupled to a control button mounted freely in said case to enable said step by step movement to be controlled; and

wherein said ratchet means comprises a ratchet bar mounted in said case parallel to said circulation passage so as to be able to carry out an orbital movement in its own plane, said ratchet bar having means for, during each orbital movement corresponding to one forward step of said cursor, engaging with said driving member of said cursor.

2. A dispensing apparatus according to claim 1, wherein said orbital movement has a rectangular outline.

3. A dispensing apparatus according to claim 1, wherein said ratchet bar comprises a serrated edged toothing whose teeth are intended to engage with said driving member.

4. A dispensing apparatus according to claim 1, wherein said ratchet bar has at least one cut in which a following member is engaged fixed in relation to said case to define with said cut said orbital movement.

5. A dispensing apparatus according to claim 1, wherein resilient return means are provided for drawing said ratchet bar in the opposite direction to the direction of introduction of said disposable strip into said circulation passage.

6. A dispensing apparatus according to claim 1, 2, 3, 4, or 5, wherein indexing catches are provided in said circulation passage step by step movements, and wherein said driving member is arranged to engage with said indexing catches to fix each position of said cursor.