Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1999-05-10
2000-08-15
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604195, 604198, 128763, A61M 500
Patent
active
061028940
ABSTRACT:
A modular retractable spring cannula blood collection device that is comprised of a needle cannula with a rigid first end and a biased spring formed at the second end. The second end of the needle cannula that is formed into a biased spring needle cannula is contained in an elongated hollow tube with a first end and a second end wherein the first end has a cannula support tunnel and a hub is formed at the second end. The second end of the biased spring needle cannula is fixed to the second end of the elongated hollow tube and a latching means is fixed to the spring needle cannula and wherein the latching means is fixed to a latch release near the first end of the elongated hollow tube thereby supporting the first end of the spring needle cannula and thereby further restraining the biased spring needle cannula within the elongated hollow tube. The first end of the spring needle cannula extends past the cannula support tunnel wherein the first end of the needle cannula is injected into a body and further withdraws blood from the body wherein the blood flows through the spring needle cannula, and into a vacutainer fixed to the hub of the elongated hollow tube and wherein the blood further flows into a vial in the vacutainer wherein the vial is suitably filled with blood and removed from the vacutainer.
The latch release means is activated thereby releasing the latch means, further allowing the biased spring needle cannula to withdraw the first end of the spring needle cannula into the elongated hollow tube thereby preventing an accidental prick or injury.
REFERENCES:
patent: 4850977 (1989-07-01), Bayless
patent: 4887998 (1989-12-01), Martin et al.
patent: 4946446 (1990-08-01), Vadher
patent: 5423758 (1995-06-01), Shaw
patent: 5769826 (1998-06-01), Johnson et al.
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