Rotary lancet
First Claim
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1. A lancet actuator for sequentially advancing and retracting a lancet blade in a skin penetration operation, comprising:
- a housing containing a lancet blade structure and having an aperture for projection therethrough of a blade portion of the blade structure;
spring means insertably mounted in said housing and arranged to drive pivotal motion of said blade structure and blade portion, said blade structure continuously pivoting on a pivot without translation relative thereto throughout both sequential pivotal thrusting of said blade portion from said aperture followed by immediate pivotal retracting of the blade portion from said aperture into said housing during said pivotal motion of said blade structure.
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Abstract
A lancet actuator device and mechanism for sequentially advancing and retracting a lancet blade include a housing having an opening for operating projection of the lancet blade. The actuator mechanism includes a drive spring structure insertably mounted in the housing and arranged to drive pivotal motion of the lancet blade including sequential thrusting of the blade from the housing aperture followed by immediate pivotally reverse retracting of the blade from the aperture into the housing as the spring deengerizes.
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Citations
16 Claims
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1. A lancet actuator for sequentially advancing and retracting a lancet blade in a skin penetration operation, comprising:
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a housing containing a lancet blade structure and having an aperture for projection therethrough of a blade portion of the blade structure; spring means insertably mounted in said housing and arranged to drive pivotal motion of said blade structure and blade portion, said blade structure continuously pivoting on a pivot without translation relative thereto throughout both sequential pivotal thrusting of said blade portion from said aperture followed by immediate pivotal retracting of the blade portion from said aperture into said housing during said pivotal motion of said blade structure. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A lancet actuator for sequentially advancing and retracting a lancet blade in a skin incision operation, comprising:
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a housing containing a lancet blade carriage and having an aperture for projection therethrough of a blade portion on the blade carriage; and a torsion spring mounted in said housing and arranged to drive pivotal motion of said blade carriage and blade portion, said blade structure continuously pivoting on a pivot without translation relative thereto throughout both sequential pivotal thrusting of said blade portion from said aperture followed by immediate pivotal retracting of the blade portion from said aperture into said housing during said pivotal motion of said blade structure. - View Dependent Claims (8, 9, 10, 11)
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12. A lancet actuator for skin penetration operation, comprising:
- a displaceable blade structure arranged for thrusting into a skin penetration position; and
a blade impact impression structure including a deformable surface arranged on said actuator in a displacement path of said blade structure and having a configuration to deform and to produce an impression of impact thereagainst by said blade structure, thereby serving as an indicator on said actuator of the blade structure displacement. - View Dependent Claims (13, 14, 15, 16)
- a displaceable blade structure arranged for thrusting into a skin penetration position; and
Specification