Blood sampling devices

  • US 4,869,249 A
  • Filed: 05/02/1988
  • Issued: 09/26/1989
  • Est. Priority Date: 05/01/1987
  • Status: Expired due to Term
First Claim
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1. A disposable pricker comprising a body, a lance, spring means acting between the lance and the body so that in a relaxed condition of the spring means the lance is in a first retracted position within the body, a cap for the body providing a passing through which the lance tip can move, a formation within the cap for engaging the lance and urging it to a second retracted position, thereby energizing the spring means, as the cap is fitted, means within the body to engage the cap formation as fitting is completed thereby to release the lance, enabling the spring means to cause momentary projection of the lance tip from the passage, and catch means holding the cap to the body when fitting is completed with the lance tip within the passage.

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