US4409990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid sampling needle assembly and method of use thereof
Assignee: Individual
•
Filing: 1981-10-13
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Granted: 1983-10-18
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Expires: 2001-10-13
Abstract
Abstract A fluid transport assembly, comprising a cannula spaced apart from a needle, with the cannula and needle lying along the same longitudinal axis and separated by a rigid needle housing assembly is provided. The cannula and the first end of the needle housing assembly are adapted for mating engagement with a catheter prepositioned in a blood vessel of a patient. The needle and second end of the needle housing assembly are adapted for engagement with a standardized collection container, with the container preferably supported by a holder which is threadably secured to threads positioned in the second end of the needle housing assembly. The cannula is made of a flexible material and is provided with a non-cutting tip; the needle is made of a rigid material and is provided with a cutting tip. The present invention is adapted for use at an intravenous insertion site, thereby obviating the necessity for a second needle insertion site.
Inventors
- 👤 Gil N. Mileikowsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:45
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/15; A61B5/153; A61B5/154; A61B5/150007; A61B5/150015; A61B5/15003; A61B5/150351; A61B5/150374; A61B5/150381; A61B5/150389; A61B5/150473; A61B5/150534; A61B5/150572; A61B5/150694; A61B5/150725; A61B5/150732; A61B5/150992
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
117 words
A fluid sampling apparatus, which comprises: a. a flexible, non-cutting cannula; b. a rigid, cutting needle aligned longitudinally with said cannula; c. a needle housing assembly joining said cannula and said needle along the longitudinal axes thereof, said assembly having a first end adapted for sealing engagement with the exposed end of a catheter prepositioned in the lumen of a blood vessel, said assembly also having a threaded second end; d. each end of said needle housing assembly adapted for receipt of a segmented, removable protective cover encompassing said cannula and said needle; and e. a soft, flexible sheath connected to said second end of said needle housing assembly and covering said needle in spaced apart relation.
Claim 2
Dependent Claim
117 words
A fluid sampling apparatus, which comprises: a. a flexible, non-cutting cannula; b. a rigid, cutting needle aligned longitudinally with said cannula; c. a needle housing assembly joining said cannula and said needle along the longitudinal axes thereof, said assembly having a first end adapted for sealing engagement with the exposed end of a catheter prepositioned in the lumen of a blood vessel, said assembly also having a threaded second end; d. each end of said needle housing assembly adapted for receipt of a segmented, removable protective cover encompassing said cannula and said needle; and e. a soft, flexible sheath connected to said second end of said needle housing assembly and covering said needle in spaced apart relation.
Claim 3
Dependent Claim
28 words
The apparatus of claim 1, wherein said cannula is adapted to fit slidably and frictionally within said prepositioned catheter, with said needle being provided with a cutting edge.
Claim 4
Dependent Claim
19 words
The apparatus as claimed in claim 1, wherein said cannula is coated with anticoagulation agent to prevent blood coagulation.
Claim 5
Independent Claim
88 words
A method of obtaining fluid samples from a patient comprising the steps of: a. inserting a catheter into the lumen of a blood vessel of a patient; b. inserting a non-cutting, flexible cannula attached to a first end of a needle housing assembly into the bore of said catheter; c. removably engaging a fluid collection container to a needle at a second end of said needle housing assembly, said needle being provided with a cutting edge and being spaced apart from said cannula by said needle housing assembly.
Claim 6
Independent Claim
88 words
A method of obtaining fluid samples from a patient comprising the steps of: a. inserting a catheter into the lumen of a blood vessel of a patient; b. inserting a non-cutting, flexible cannula attached to a first end of a needle housing assembly into the bore of said catheter; c. removably engaging a fluid collection container to a needle at a second end of said needle housing assembly, said needle being provided with a cutting edge and being spaced apart from said cannula by said needle housing assembly.
Claim 7
Dependent Claim
31 words
The method of claim 4, wherein said removably engaging step further includes the step of matingly engaging a fluid collection container holder to the second end of said needle housing assembly.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-17 | 1987-04-18 | 1987-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-17 | 1991-04-18 | 1991-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-17 | 1995-04-18 | 1995-10-18 | $7700.00 | Window Closed / Lapsed |