Vacuum assisted lancing device
First Claim
Patent Images
1. A vacuum assisted lancing device (10) comprising:
- a housing (14,
24) having an open end (22);
a lancet holder (20) mounted in said housing;
a first resilient member (58) mounted in said housing (14,
24) and associated with said lancet holder (20) to bias said lancet holder (20) toward said open end (22) of said housing (14,
24);
a second resilient member (32) mounted in said housing associated with said lance holder (20) to bias said lancet holder (20) away from said open end (22) of said housing (14;
24) anda flexible vacuum member (38,
66) in said housing associated with said lancet holder (20) and flexed, after said lancet holder (20) is biased away from said open end (22), to displace air in said housing (14,
24).
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Accused Products
Abstract
A vacuum assisted lancing device (10) for obtaining capillary blood from body sites includes a plunger (12) mounted in a barrel or upper housing (24) that upon being pressed by a user, drives a lancet (18) to puncture skin at a body site. A vacuum member such as a diaphragm (38, 66) or bellows (66) is displaced by the plunger (12) and displaces air in the lancing device (10) to create a vacuum. The vacuum draws skin partially into the lancing device (10) causing blood to form at the puncture. The vacuum is then released and the blood is tested.
349 Citations
19 Claims
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1. A vacuum assisted lancing device (10) comprising:
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a housing (14,
24) having an open end (22);a lancet holder (20) mounted in said housing; a first resilient member (58) mounted in said housing (14,
24) and associated with said lancet holder (20) to bias said lancet holder (20) toward said open end (22) of said housing (14,
24);a second resilient member (32) mounted in said housing associated with said lance holder (20) to bias said lancet holder (20) away from said open end (22) of said housing (14;
24) anda flexible vacuum member (38,
66) in said housing associated with said lancet holder (20) and flexed, after said lancet holder (20) is biased away from said open end (22), to displace air in said housing (14,
24). - View Dependent Claims (2, 3, 4, 5, 6)
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7. A vacuum assisted lancing device (10), comprising:
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a housing (14,
24) with an open end (22);a lancet holder (20) moveably mounted in said housing (14,
24) adjacent said open end (22);an actuator (12) coupled to said lancet holder (20) for moving said lancet holder (20) toward said open end (22); at least one resilient member (32) coupled to said lancet holder (20) biasing said lancet holder (20) away from said open end (22); and a vacuum member in said housing (38,
66) associated with and flexed, after said lancet holder (20) is biased away from said open end (22), by at least one of said actuator (12) and said lancet holder (20). - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A method of drawing a body fluid sample for testing using a vacuum assisting a lancing device (10), comprising:
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providing a housing (14,
24) having at least one open end (22);mounting a lancet holder (20) and a lancet (18) in said housing (14,
24) adjacent said open end (22) for reciprocating movement in said housing;securing at least a first portion (42) of a flexible member (38,
66) to said housing (14,
24);securing a second portion (44) of said flexible member (38,
66) to move with said lancet holder (20);placing the open end (22) against a Selected puncture site; moving said lancet holder (20) and said lancet (18) through said open end (22) and propelling said lancet (I8) into said puncture site and retracting said lancet (18) from said puncture site; and flexing said flexible member (38,
66) to displace air in said housing and draw a body fluid sample from said puncture site. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification