DISPOSABLE BLOOD COLLECTING INSTRUMENT
First Claim
Patent Images
1. A disposable blood collecting instrument comprising:
- a lancet having a sharp piercing body at a tip thereof, anda spring assembly stored together with the lancet in a housing,a tip portion of the piercing body being arranged to protrude out of an opening of the housing to perform a piercing operation by means of a biasing force generated by the spring assembly, and the tip portion of the piercing body being arranged to retract to a recessed position within the housing after the piercing operation,wherein a surrounding area of the opening of the housing is made to be a visible portion with transparency that allows a view of an inside; and
the spring assembly is located on a retracting side of the piercing body from the tip portion thereof when the lancet is retracted to the recessed position.
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Accused Products
Abstract
Disclosed is a disposable blood collecting instrument that stably secures a sufficient volume of blood with a single puncture. A tip portion of a piercing body of a lancet contained within a housing projects by means of a biasing force of a spring assembly, and a surrounding area of an opening of the housing is made a transparent visible portion with a visible interior. Additionally, the disposable blood collecting instrument has been formed such that the spring assembly is contained within housing farther behind the piercing body than a position of the tip portion of the piercing body that has entered within the housing after piercing.
21 Citations
5 Claims
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1. A disposable blood collecting instrument comprising:
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a lancet having a sharp piercing body at a tip thereof, and a spring assembly stored together with the lancet in a housing, a tip portion of the piercing body being arranged to protrude out of an opening of the housing to perform a piercing operation by means of a biasing force generated by the spring assembly, and the tip portion of the piercing body being arranged to retract to a recessed position within the housing after the piercing operation, wherein a surrounding area of the opening of the housing is made to be a visible portion with transparency that allows a view of an inside; and the spring assembly is located on a retracting side of the piercing body from the tip portion thereof when the lancet is retracted to the recessed position. - View Dependent Claims (2, 3, 4, 5)
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Specification