Lancet firing device

• US 8,372,103 B2
• Filed: 01/09/2007
• Issued: 02/12/2013
• Est. Priority Date: 01/12/2006
• Status: Expired due to Fees

• Current Assignee: Owen Mumford
• Original Assignee: Owen Mumford
• Inventors: Marshall, Jeremy, Eaton, Mark
• Primary Examiner(s): Hughes, S. Thomas
• Assistant Examiner(s): SZPIRA, JULIE ANN
• Application Number:
  US11/651,241
• Publication Number:
  US 20070162063A1
• Time in Patent Office: 2,226 Days
• Field of Search: 606/180, 606/118, 606/181, 606/182, 600/583
• US Class Current: 606/181
• 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 5/150183 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 5/150412 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 5/15113 Manually triggered, i.e. the triggering requires a deliberate action by the user such as pressing a drive button
• CPC Class Codes: A61B 5/15186 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

Abstract

There is provided a lancet firing device comprising a projection, configured to project into an interior cavity of a lancet body when a lancet having a lancet body is loaded into the firing device; and means to grip an inner wall of the lancet body, the means being disposed on the projection.

Claims

1. A lancet firing device suitable for firing skin pricking lancets, each lancet comprising a needle embedded within an enclosed end of a tubular lancet body, the device comprising:

a substantially cylindrical projection configured to project through an open end of the tubular lancet body into an interior cavity of the lancet body when the lancet is loaded into the firing device;

compressible means to grip an inner wall of the lancet body, said compressible means mounted on said projection; and

a tubular supporting wall encircling the projection and configured to define a slot between the projection and the supporting wall into which the tubular lancet body can be loaded.

2. The lancet firing device as claimed in claim 1, wherein said compressible means to grip an inner wall comprises an o-ring.

3. The lancet firing device as claimed in claim 2, further comprising a depression in a surface of the projection, the depression configured to receive the o-ring.

5. The lancet firing device as claimed in claim 1, further comprising a supporting wall configured to contact an outer surface of the lancet body.

6. The lancet firing device as claimed in claim 5, wherein the supporting wall is configured to form a friction fit with the lancet body.

4. A lancet firing device comprising:

(a) a rod;

(b) an o-ring;

(c) a substantially cylindrical projection configured to secure a lancet to the lancet firing device, the lancet comprising a needle embedded within an enclosed end of a tubular lancet body, the lancet body having an interior cavity, an opening to the interior cavity, and an interior surface within the interior cavity, wherein the projection comprises;

(i) a first end having a depression configured to receive the o-ring; and

(ii) a second end coupled to the rod; and

(d) a supporting wall that is configured to define a slot between the projection and the supporting wall into which the tubular lancet body can be loaded,

wherein the first end of the projection is configured to enter through the opening and into the interior cavity of the lancet body, the o-ring engaging the interior surface of the lancet body to secure the lancet to the firing device, and the supporting wall contacting an outer surface of the lancet body to form a friction fit with the lancet.