Lancet casing

• US 20070162064A1
• Filed: 03/13/2007
• Published: 07/12/2007
• Est. Priority Date: 03/15/2002
• Status: Abandoned Application

• Current Assignee: Charles Starnes
• Original Assignee: Charles Starnes
• Inventors: Starnes, Charles
• Application Number:
  US11/717,346
• Publication Number:
  US 20070162064A1
• Time in Patent Office: Days
• US Class Current: 606/181
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• 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 5/150519 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 5/150549 Protectors removed by rotational movement, e.g. torsion or screwing
• CPC Class Codes: A61B 5/150618 Integrally moulded protectors, e.g. protectors simultaneously moulded together with a further component, e.g. a hub, of the piercing element
• CPC Class Codes: A61B 5/150717 manually removed
• CPC Class Codes: A61B 5/150893 by indicating if used, tampered with, unsterile or defective
• CPC Class Codes: A61B 5/15142 Devices intended for single use, i.e. disposable

Abstract

An improved protective lancet, lancet casing and method for producing the same. The lancet casing includes a lancet body that is integrally molded about an elongated shaft portion of a lancet needle. The lancet body is characterized in having an upper bearing surface from which a pointed end of the lancet needle extends. The lancet casing further includes a cap integrally molded about the pointed end of the lancet needle and joined to the lancet body by a narrow frangible junction on the upper bearing surface of the lancet body. In accordance with the present invention, one or more tab members are affixed between the cap and the body. Each of the one or more tab members includes a persistently affixed upper end integrally molded to the outer contour of the cap and a detachably affixed lower end integrally molded to or near a peripheral edge of the upper bearing surface of the lancet body to provide a readily perceptible user indication of the status of whether or not the cap member has been re-attached or tampered with.

Claims

1. A protective lancet casing comprising:

a lancet body having an upper surface from which a pointed end of a lancet needle extends;

a cap member abutting the upper surface of said lancet body for encasing the pointed end of the lancet needle;

at least one tab member affixed at an upper end to said cap member and affixed at a lower end to said lancet body;

wherein said at least one tab member is permanently affixed at the upper end to said cap member and permanently affixed at the lower end to said lancet body, and wherein said at least one tab member includes a detachable junction between the upper and lower ends.

2. The protective lancet casing of claim 1, wherein said at least one tab member is tapered such that the upper end forms a wider molded junction with said cap member and the lower end forms a wider molded junction with said lancet body and wherein said at least one tab member includes a narrower molded detachable junction between the upper and lower ends.

3. The protective lancet casing of claim 1, wherein the upper surface of the lancet body is substantially flat for providing a bearing surface with respect to the pointed end of the lancet needle.

4. The protective lancet casing of claim 1, wherein said lancet body, said cap member, and said at least one tab member are integrally molded as a single unit by a mold injection process.

5. The protective lancet casing of claim 1, wherein said cap member has an outer contour that tapers inward toward the upper surface of said lancet body such that a substantial gap is formed between the tapered contour and the lower end of the at least one tab member.

6. A protective lancet casing comprising:

a lancet body having an upper surface from which a pointed end of a lancet needle extends;

a cap member abutting the upper surface of said lancet body for encasing the pointed end of the lancet needle;

at least one tab member affixed at an upper end to said cap member and affixed at a lower end to said lancet body;

wherein said at least one tab member includes two tab members attached in diametric opposition on said lancet body.

7. The protective lancet casing of claim 6, wherein each of the two diametrically opposing tab members are pre-disposed at opposite twist angles to facilitate detachment of the lower end of one of the two tab members in a clockwise twist direction and detachment of the lower end of the other of the two tab members in a counterclockwise twist direction.

8. The protective lancet casing of claim 6, wherein each of the two diametrically opposing tab members are pre-disposed at a twist angle to facilitate ease of detachment of the respective lower ends of both of the two tab members upon twisting in one twist direction.

9. The protective lancet of claim 8, wherein the twist angle of both of the two diametrically opposed tab members facilitates twisting detachment in either the clockwise or counterclockwise direction with respect to the upper surface of said lancet body.

10. A lancet unit comprising:

an integrally molded plastic encasement housing a lancet needle, wherein said encasement includes;

a body member molded about a shaft portion of the lancet needle, said body member including an upper bearing surface from which a pointed end section of the lancet needle protrudes;

a cap member molded about the pointed end section of the lancet needle; and

at least one plastic strip member extending between said cap member and said body member, said at least one plastic strip member affixed at an upper end to said cap member and affixed at a lower end at or near the periphery of said upper bearing surface such that a visually perceptible gap is formed between said lower end of said at least one plastic strip member and said cap member;

wherein the upper end of the at least one plastic strip member is integrally affixed above a fulcrum boundary point on a curved outer contour of said cap member such that an upper portion of the at least one plastic strip member is in non-adhered surface contact with a portion of the curved outer contour of said cap member.

11. The lancet unit of claim 10, wherein the at least one plastic strip member departs tangentially from the non-adhered surface contact with the curved outer contour of said cap member.

12. The lancet unit of claim 10, wherein said at least one plastic strip member comprises two plastic strip members.

13. The lancet unit of claim 12, wherein each of the two plastic strip members are pre-disposed at opposite twist angles to facilitate detachment of the lower end of one of the two plastic strip members in a clockwise twist direction and detachment of the lower end of the other of the two plastic strip members in a counterclockwise twist direction.

14. The lancet unit of claim 12, wherein each of the two plastic strip members are pre-disposed at a twist angle to facilitate ease of detachment of the respective lower ends of both of the two plastic strip members upon twisting in one twist direction.

15. The lancet unit of claim 14, wherein the twist angle of both of the two plastic strip members facilitates twisting detachment in either the clockwise or counterclockwise direction with respect to the upper surface of said body member.