EP0403873A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Lancet assembly
Assignee: Bayer Corp
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Filing: 1990-06-06
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Granted: —
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Expires: 2010-06-06
Abstract
Abstract A lancet assembly (10) includes a reusable base (12) unit that defines a handle for a lancet assembly and houses a biasing mechanism (20) for driving a lancet (16) into the finger of a user. The base unit (12) includes a spring biased hammer (18) that once cocked, can be released to drive a lancet. A lancet is included in a disposable end cap (14) that may be releasible attached to one end of the base unit. The end cap includes integral resilience spring fingers (22) that maintain the lancet completely within the end cap before and after use, and functions to return the lancet after engagement of the lancet and hammer. The end cap (14) can be rotated to orient the end cap relative to a user's finger to control the depth of penetration of the lancet (16) into the user's finger.
Inventors
- 👤 Michael K. Brown
- 👤 Mohammad A. Kheiri
- 👤 Glenn D. Purcell
- 👤 William C. Taylor
- 👤 Robert Whitson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 00:52
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/15; A61B5/151; A61B5/15142; A61B5/14; A61B5/150007; A61B5/150015; A61B5/150022; A61B5/150175; A61B5/15019; A61B5/150374; A61B5/150381; A61B5/150412; A61B5/150435; A61B5/150534; A61B5/150541; A61B5/150549; A61B5/15058; A61B5/150618; A61B5/150633; A61B5/150694; A61B5/150717; A61B5/15101; A61B5/15103; A61B5/15107; A61B5/15113; A61B5/15115; A61B5/15117; A61B5/15186; A61B5/15188; A61B5/1519
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
78 words
A lancet assembly comprising: a base unit providing a handle for said lancet assembly, a disposable end cap releasible attachable to said base unit, a lancet mounted in and entirely contained within said end cap, a hammer member mounted in said base unit for engaging said lancet in said end cap and driving said lancet; and a lancet return member for moving said entire lancet totally within said end cap after said lancet is driven by said hammer.
Claim 2
Dependent Claim
78 words
A lancet assembly comprising: a base unit providing a handle for said lancet assembly, a disposable end cap releasible attachable to said base unit, a lancet mounted in and entirely contained within said end cap, a hammer member mounted in said base unit for engaging said lancet in said end cap and driving said lancet; and a lancet return member for moving said entire lancet totally within said end cap after said lancet is driven by said hammer.
Claim 3
Dependent Claim
32 words
The lancet assembly set forth in claim 1, said base unit including a first biasing member mounted in said base unit and engaging said hammer for driving said hammer into said lancet.
Claim 4
Dependent Claim
65 words
The lancet assembly set forth in claim 1 wherein said end cap includes a closed end with an elongated slot through which said lancet extends upon engagement of said hammer member with said lancet, said end cap rotatable mounted on said base unit to orient said elongated slot and control the engagement of said lancet with a finger of a user of said lancet assembly.
Claim 5
Dependent Claim
46 words
The lancet assembly set forth in claim 1 wherein said lancet return member comprises a second biasing member for biasing said lancet inside said end cap where said lancet is completely contained in said end cap prior to, during and after attachment to said base unit.
Claim 6
Dependent Claim
37 words
The lancet assembly set forth in claim 1 further comprising a flange on the exterior of said end cap for engagement by a user of said lancet assembly to remove said end cap from said base unit.
Claim 7
Dependent Claim
57 words
The lancet assembly set forth in claim 1 wherein said lancet includes a collar, indexing structure on said collar and corresponding structure in said end cap wherein the interaction of said indexing structure and said corresponding structure allows said lancet to move with said end cap upon rotation of said end cap relative to said base unit.
Claim 8
Dependent Claim
20 words
The lancet assembly set forth in claim 1 wherein said base unit and said end cap are fabricated of polyethylene.
Claim 9
Dependent Claim
95 words
An assembly for piercing skin to obtain a blood specimen, comprising: a reusable base member for housing a driving member, said driving member being a hammer; a disposable end cap, said end cap including a first end adapted for releasable attachment to said base member, a lancet mounted in said end cap for engagement by said driving member after attachment of said end cap to said base member, and a resilient element in said end cap for biasing said lancet completely into said end cap when said lancet is not engaged by said driving member.
Claim 10
Dependent Claim
95 words
An assembly for piercing skin to obtain a blood specimen, comprising: a reusable base member for housing a driving member, said driving member being a hammer; a disposable end cap, said end cap including a first end adapted for releasable attachment to said base member, a lancet mounted in said end cap for engagement by said driving member after attachment of said end cap to said base member, and a resilient element in said end cap for biasing said lancet completely into said end cap when said lancet is not engaged by said driving member.
Claim 11
Dependent Claim
49 words
The skin piercing assembly claimed in claim 8 wherein said end cap includes a second end, a diagonal slot in said second end, wherein the orientation of said slot on the skin of a user defines the depth of penetration of said lancet into the skin of a user.
Claim 12
Dependent Claim
102 words
A lancet for a lancet assembly for piercing skin of a user upon engagement by a hammer housed in said lancet assembly, said lancet comprising: a first, skin piercing end for piercing the skin of a user of the lancet assembly upon said lancet being driven by a hammer in said lancet assembly, a second, anvil end adapted for engagement by said hammer, and a collar intermediate said first, skin piercing end and said second, anvil end, said collar including orienting structure for orienting said lancet in said lancet assembly and for preventing rotation of said lancet relative to said lancet assembly.
Claim 13
Dependent Claim
102 words
A lancet for a lancet assembly for piercing skin of a user upon engagement by a hammer housed in said lancet assembly, said lancet comprising: a first, skin piercing end for piercing the skin of a user of the lancet assembly upon said lancet being driven by a hammer in said lancet assembly, a second, anvil end adapted for engagement by said hammer, and a collar intermediate said first, skin piercing end and said second, anvil end, said collar including orienting structure for orienting said lancet in said lancet assembly and for preventing rotation of said lancet relative to said lancet assembly.
References Cited (Backward Citations)
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