US5330443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aspiration needle, syringe for use therewith, apparatus incorporating the same and kit for use in fine needle aspiration cytology
Assignee: Advanced Cytometrix Inc
•
Filing: 1993-04-20
•
Granted: 1994-07-19
•
Expires: 2013-04-20
Abstract
Abstract An aspiration needle for use with a syringe for fine needle aspiration cytology comprising a rigid elongate tubular member having distal and proximal extremities. The distal extremity is formed to provide a sharp point. The tubular member has a bore extending therethrough from the distal extremity to the proximal extremity. A body is secured to the proximal extremity of the tubular member and forms a chamber therein in communication with the bore of the tubular member. The chamber is formed by a sloping uninterrupted side wall leading to the bore of the tubular member. The body includes a fitting for receiving the syringe and for establishing communication between the syringe and the chamber.
Inventors
- 👤 Trevor J. Powles
- 👤 Mir A. Imran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:12
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0233; A61B10/0283; A61B17/00; A61B2017/00973; A61B17/32; A61B17/320068; A61B2017/32007; A61B90/00; A61B90/36; A61B90/37; A61B2090/378; A61B2217/00; A61B2217/002; A61B2217/005; A61B2217/007
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
160 words
An aspiration needle for use in collecting larger cell samples with a syringe for fine needle aspiration cytology without increasing the size of the needle comprising a rigid elongate tubular member having distal and proximal extremities, the distal extremity being formed to provide a sharp point, the tubular member having a bore extending therethrough from the distal extremity to the proximal extremity and having an opening at the distal extremity in communication with the bore and a body secured to the proximal extremity of the tubular member and forming a chamber therein in communication with and in close proximity to the opening to the bore of the tubular member, said chamber being formed by a sloping uninterrupted side wall leading distally to the opening to the bore of the tubular member, said body including a hub separate from the chamber and spaced proximally of the chamber for receiving said syringe and for establishing communication between the syringe and the chamber.
Claim 2
Dependent Claim
160 words
An aspiration needle for use in collecting larger cell samples with a syringe for fine needle aspiration cytology without increasing the size of the needle comprising a rigid elongate tubular member having distal and proximal extremities, the distal extremity being formed to provide a sharp point, the tubular member having a bore extending therethrough from the distal extremity to the proximal extremity and having an opening at the distal extremity in communication with the bore and a body secured to the proximal extremity of the tubular member and forming a chamber therein in communication with and in close proximity to the opening to the bore of the tubular member, said chamber being formed by a sloping uninterrupted side wall leading distally to the opening to the bore of the tubular member, said body including a hub separate from the chamber and spaced proximally of the chamber for receiving said syringe and for establishing communication between the syringe and the chamber.
Claim 3
Dependent Claim
24 words
An aspiration needle as in claim 1 wherein said body is formed of plastic and wherein said tubular member is formed of stainless steel.
Claim 4
Dependent Claim
12 words
An aspiration needle as in claim 2 wherein said body is transparent.
Claim 5
Dependent Claim
23 words
An aspiration needle as in claim 1 wherein said tubular member has a wall thickness ranging from approximately 0.0025 inches to 0.003 inches.
Claim 6
Dependent Claim
30 words
An aspiration needle as in claim 4 wherein said tubular member has an outside diameter of approximately 0.025 inches and less and has an inside diameter ranging from 0.018-0.020 inches.
Claim 7
Dependent Claim
47 words
An aspiration needle as in claim 1 wherein said proximal extremity of the tubular member is flared outwardly to provide a funnel-shaped passage to the bore and wherein the chamber in said body forms a smooth transition between the chamber and the funnel-shaped passage to the bore.
References Cited (Backward Citations)
GB706150A
Cited
GB2081231A
Cited
US4834722A
Cited
US4391274A
Cited
US4581024A
Cited
US5017191A
Cited
FR2632190A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-07-18 | 1998-01-17 | 1998-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-07-18 | 2002-01-17 | 2002-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-07-18 | 2006-01-17 | 2006-07-19 | $7700.00 | Window Closed / Lapsed |