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US4211323A Expired / Lapsed US ⏱️ 0.0 years remaining

Disposable diagnostic swab having a stored culture medium

Assignee: California Medical Developments Inc
•
Filing: 1978-12-01
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Granted: 1980-07-08
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Expires: 1998-12-01
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Abstract

Abstract A disposable diagnostic swab assembly which takes the form of an elongated tubular member having an internal chamber which is permanently closed at the inner end and is openable at the outer end by the removal of a cap. A culture medium containing breakable pouch is located within the internal chamber at the inner end. An elongated swab is attached to the cap with the tip of the swab being located directly adjacent the pouch. The pouch is to be breakable by applying localized pressure upon the tubular member in the area of the pouch which causes the culture medium to saturate the tip of the swab. A glass slide section may also be attached to the tubular member with access to the glass slide being permitted to facilitate usage thereof.

Inventors

  • 👤 C. Eric Olsen

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 14:40
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0096; C; C12; C12M; C12M23/00; C12M23/32; C12M33/00; C12M33/02; C12M45/00; C12M45/22; A61F; A61F13/00; A61F13/15; A61F13/38

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 293 words
A disposable diagnostic swab having a stored culture medium comprising: an elongated tubular member having an internal chamber, said chamber having an inner end and an outer end, said inner end being permanently closed, said outer end being normally closed by a removable cap, the wall of said elongated tubular member being substantially rigid but readily deflectable upon incurring a small amount of localized manual pressure; a pouch completely enclosing a quantity of culture medium, the wall of said pouch being constructed of a thin readily breakable material upon incurring a small amount of manual pressure, said pouch being located within said internal chamber at said inner end; a swab having a tip and and an aft end interconnected by an elongated swab body, said swab located within said internal chamber with said aft end located at said outer end and said tip located directly adjacent said pouch, whereby said pouch may be ruptured causing immersion of said tip by said culture medium; said internal chamber including an internal separating wall assembly to closely confine said swab, a portion of said internal separating wall assembly cooperating with said tubular member to substantially totally enclose said pouch, said internal separating wall assembly including a pair of spaced-apart wall members with each said wall member being substantially parallel to said swab body, said swab body being located between said wall members; and a flexible sealing member mounted on said swab adjacent said tip, said flexible sealing member to be in physical, liquid tight contact with said wall members which results in totally enclosing said pouch, said flexible sealing member to prevent the flow of culture medium longitudinally along said swab and therefore insure that said culture medium is confined to said tip of said swab.
Claim 2
Dependent Claim 293 words
A disposable diagnostic swab having a stored culture medium comprising: an elongated tubular member having an internal chamber, said chamber having an inner end and an outer end, said inner end being permanently closed, said outer end being normally closed by a removable cap, the wall of said elongated tubular member being substantially rigid but readily deflectable upon incurring a small amount of localized manual pressure; a pouch completely enclosing a quantity of culture medium, the wall of said pouch being constructed of a thin readily breakable material upon incurring a small amount of manual pressure, said pouch being located within said internal chamber at said inner end; a swab having a tip and and an aft end interconnected by an elongated swab body, said swab located within said internal chamber with said aft end located at said outer end and said tip located directly adjacent said pouch, whereby said pouch may be ruptured causing immersion of said tip by said culture medium; said internal chamber including an internal separating wall assembly to closely confine said swab, a portion of said internal separating wall assembly cooperating with said tubular member to substantially totally enclose said pouch, said internal separating wall assembly including a pair of spaced-apart wall members with each said wall member being substantially parallel to said swab body, said swab body being located between said wall members; and a flexible sealing member mounted on said swab adjacent said tip, said flexible sealing member to be in physical, liquid tight contact with said wall members which results in totally enclosing said pouch, said flexible sealing member to prevent the flow of culture medium longitudinally along said swab and therefore insure that said culture medium is confined to said tip of said swab.
Claim 3
Dependent Claim 59 words
The disposable diagnostic swab as defined in claim 1 including: a glass slide section being attached to said elongated tubular member, said glass slide section to include a sterilized glass slide to be normally located within the housing of said glass slide section, said housing being openable to gain access to said glass slide to thereby facilitate usage thereof.

References Cited (Backward Citations)

US3308039A Cited
US3651926A Cited
US3648704A Cited
US3835834A Cited
US3967728A Cited
US3913562A Cited
US4014748A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1983-07-08 1984-01-07 1984-07-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1987-07-08 1988-01-07 1988-07-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1991-07-08 1992-01-07 1992-07-08 $7700.00 Window Closed / Lapsed

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