US3783998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sampling syringe
Assignee: Sherwood Medical Co
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Filing: 1972-03-22
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Granted: 1974-01-08
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Expires: 1992-03-22
Abstract
Abstract A sampling syringe for the collection and transport of a sample, particularly a fecal sample. The syringe comprises a syringe barrel into which the sample may be forced or aspirated by a plunger slidable therein. A sheath having a distal end of greater internal diameter than the external diameter of the barrel is slidable on the barrel and a cap sealingly closes both the distal ends of the barrel and sheath.
Inventors
- 👤 D Brush
- 👤 R Oswald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:51
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/0038
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
164 words
A sampling syringe comprising an elongate tubular syringe barrel, a plunger slidably received within the bore of said barrel, a tubular sheath open at the proximal and distal ends thereof receiving said barrel, said sheath being axially rearwardly movable relative to said barrel from a first position in which a distal portion of said sheath covers a distal portion of said barrel to a second position in which said distal portion of said sheath is spaced proximally of said distal portion of said barrel to uncover said distal portion of said barrel for receiving a sample therein, said distal portion of said sheath having a greater inner diameter than the outer diameter of said distal portion of said barrel so that said distal portion of said sheath is spaced radially outwardly from said distal portion of said barrel when said sheath is in said first position, said sheath being axially forwardly movable relative to said barrel from said second position to said first position.
Claim 2
Dependent Claim
164 words
A sampling syringe comprising an elongate tubular syringe barrel, a plunger slidably received within the bore of said barrel, a tubular sheath open at the proximal and distal ends thereof receiving said barrel, said sheath being axially rearwardly movable relative to said barrel from a first position in which a distal portion of said sheath covers a distal portion of said barrel to a second position in which said distal portion of said sheath is spaced proximally of said distal portion of said barrel to uncover said distal portion of said barrel for receiving a sample therein, said distal portion of said sheath having a greater inner diameter than the outer diameter of said distal portion of said barrel so that said distal portion of said sheath is spaced radially outwardly from said distal portion of said barrel when said sheath is in said first position, said sheath being axially forwardly movable relative to said barrel from said second position to said first position.
Claim 3
Dependent Claim
30 words
A sampling syringe as set forth in claim 1 further including a removable cap for closing the distal end of said sheath when said sheath is in said first position.
Claim 4
Dependent Claim
31 words
A sampling syringe as set forth in claim 2 wherein said cap comprises inner and outer concentric sealing portions for respectively closing the distal end portions of said barrel and sheath.
Claim 5
Dependent Claim
21 words
A sampling syringe as set forth in claim 1 wherein a proximal portion of said sheath frictionally slidingly engages said barrel.
Claim 6
Dependent Claim
32 words
A sampling syringe as set forth in claim 4 wherein said proximal portion of said sheath has a smaller inner diameter than the inner diameter of said distal portion of said sheath.
Claim 7
Dependent Claim
20 words
The sampling syringe as set forth in claim 4 wherein said barrel has a greater axial length than said sheath.
Claim 8
Dependent Claim
45 words
A sampling syringe as set forth in claim 6 wherein said barrel has a length relative to said sheath such that the proximal end of said barrel is proximally of the proximal end of said sheath in both of said first and second sheath positions.
Claim 9
Dependent Claim
36 words
A sampling syringe as set forth in claim 7 further including a removable cap engageable with said distal portion of said sheath for closing the distal end thereof when said sheath is in said first position.
Claim 10
Dependent Claim
25 words
A sampling syringe as set forth in claim 8 wherein said sheath has a radially outwardly extending flange axially spaced from the distal end thereof.
Claim 11
Dependent Claim
22 words
A sampling syringe as set forth in claim 9 wherein said cap is heat staked to said distal portion of said sheath.
References Cited (Backward Citations)
US2724385A
Cited
US3008570A
Cited
US3107785A
Cited
US3509771A
Cited
US3519390A
Cited
US3702653A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |