Blood collecting device
First Claim
1. A fluid collecting device (10) comprising an elongated member (14), puncturing means (40) carried by said member for puncturing tissue, and means (32) also carried by said member (14) for connecting a capillary tube (30) to the member such that an end (31) of the capillary tube is maintained in a predetermined space relationship with said puncturing means whereby the tube end is automatically positioned adjacent to the punctured tissue for collecting blood issuing therefrom.
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Accused Products
Abstract
A blood collecting device (10) includes a lancet (40) and a capillary tube (30) carried together by an elongated member (14). The tube (30) is simultaneously positioned adjacent the skin when the lancet (40) is advanced by the member (14) to puncture the skin. The lancet (40) is automatically retracted by a retraction spring (54) but the tube (30) is maintained in close proximity with the puncture for collecting blood issuing therefrom without further manipulation by the user.
320 Citations
17 Claims
- 1. A fluid collecting device (10) comprising an elongated member (14), puncturing means (40) carried by said member for puncturing tissue, and means (32) also carried by said member (14) for connecting a capillary tube (30) to the member such that an end (31) of the capillary tube is maintained in a predetermined space relationship with said puncturing means whereby the tube end is automatically positioned adjacent to the punctured tissue for collecting blood issuing therefrom.
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11. A fetal blood collecting device (10) comprising:
an elongated pen-like member (14) having a collar (16) on a distal end thereof having its outer surface (17) sloped with respect to the transverse axis of the member (14), and being adapted to engage the presenting part of the fetus disposed at a complimentary angle in the cervix, said member (14) having a cut away portion (24) with a substantially flat surface (26) extending inwardly from said collar (16) generally parallel with the longitudinal axis of said member (14), said cut away portion (24) having a transversely extending wall (28) spaced a predetermined distance from said collar (16), wedge means (34) slidably mounted for laterally restricted longitudinal movement on said flat surface (26) of the cut away portion (24), a blade (40) connected to one end of said wedge (34) with, a rod (42) connected to the opposite end of said wedge (34) and slidably mounted in said member (14), operative to move the wedge (34) to a first position with the blade (40) projecting a given distance from said collar (16) and within the confines thereof, means (32) carried by said flat surface (26) for removably holding a capillary tube (30) generally parallel with said longitudinal axis of the member (14) so that an end (31) of the tube is within the confines of said collar at a predetermined spaced relationship below the blade protruding from the collar whereby the tube is automatically positioned adjacent the tissue punctured by the blade for collecting blood issuing therefrom, said wall (28) serving to automatically space the tube end (31) a predetermined distance from the outer surface (17) of said collar (16); and
retraction means (54) connected to said rod (42) for retracting the blade (40) inwardly of said collar (16) after puncturing the tissue while maintaining the tube end (31) adjacent the tissue.- View Dependent Claims (12, 13, 14)
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15. A blood collection device comprising:
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an elongated member (14) terminating in a generally annular collar (16) at one end for engaging tissue; puncturing means (40) mounted on said member and operative to protrude a given distance from the collar (16) to puncture tissue; and means (32) also carried by said member (14) for securing an end (31) of a capillary tube (30) within the confines of said collar (16) and below said puncturing means (40) in a predetermined spaced relationship therewith whereby said tube end is automatically maintained in a position to collect blood issuing from a puncture made by the puncturing means (40) without further substantial movement of said member (14). - View Dependent Claims (16)
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17. A method of collecting fluid from tissues, said method comprising:
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connecting a capillary tube to a device having a puncturing portion at one end thereof so that an end of the tube is maintained in a predetermined spaced relationship below the puncturing portion; advancing the device in one continuous movement to substantially simultaneously puncture the tissue with the puncturing portion and position the end of the tube in close proximity with the puncture; and collecting fluid emanating from the puncture into the end of the capillary tube without further movement of the device with respect to the tissue.
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Specification