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US5087262A Expired / Lapsed US ⏱️ 0.0 years remaining

Amniotic membrane perforator

Assignee: Individual
•
Filing: 1990-04-06
•
Granted: 1992-02-11
•
Expires: 2010-04-06
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Abstract

Abstract An amniotic membrane perforator includes an elongated shaft having a pair of spaced apart lobes at the distal end thereof relative to the user. A pair of tines are positioned between the lobes. Upon insertion of the perforator into the vaginal canal the lobes depress the amniotic sac so as to present a portion of the sac tissue to the tines for subsequent puncture.

Inventors

  • 👤 John A. Sheahon

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 09:33
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/42; A61B17/4208

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 246 words
A perforator for penetrating amniotic sac tissue of a patient comprising: an elongated shaft having proximal and distal ends, said shaft having a configuration for insertion into a vaginal canal of the patient with a length to allow said distal end to be positioned adjacent the amniotic sac while said proximal end is positioned exterior of the vaginal canal; perforating means at said distal end of said shaft comprising: a pair of spaced-apart lobes extending from said distal end of said shaft and diverging from a central longitudinal axis of said shaft, said lobes extending toward the amniotic sac upon said positioning of said shaft in the canal by a user, said lobes having a configuration hindering a puncture of the amniotic sac tissue; said diverging lobes defining an area therebetween for the reception of a downwardly bulging portion of the adjacent amniotic sac between said lobes upon an urging of said lobes against the sac by a first manipulation of said proximal end of said shaft by the user; puncture means extending from said distal end of said shaft and fixed between said lobes, said lobes of said shaft extending beyond said puncture means to allow for said bulging of the sac between said lobes upon said first user manipulation of said distal end prior to a subsequent piercing of the bulging portion of the sac between said lobes by said puncture means upon a second manipulation of said proximal shaft end by the user.
Claim 2
Dependent Claim 246 words
A perforator for penetrating amniotic sac tissue of a patient comprising: an elongated shaft having proximal and distal ends, said shaft having a configuration for insertion into a vaginal canal of the patient with a length to allow said distal end to be positioned adjacent the amniotic sac while said proximal end is positioned exterior of the vaginal canal; perforating means at said distal end of said shaft comprising: a pair of spaced-apart lobes extending from said distal end of said shaft and diverging from a central longitudinal axis of said shaft, said lobes extending toward the amniotic sac upon said positioning of said shaft in the canal by a user, said lobes having a configuration hindering a puncture of the amniotic sac tissue; said diverging lobes defining an area therebetween for the reception of a downwardly bulging portion of the adjacent amniotic sac between said lobes upon an urging of said lobes against the sac by a first manipulation of said proximal end of said shaft by the user; puncture means extending from said distal end of said shaft and fixed between said lobes, said lobes of said shaft extending beyond said puncture means to allow for said bulging of the sac between said lobes upon said first user manipulation of said distal end prior to a subsequent piercing of the bulging portion of the sac between said lobes by said puncture means upon a second manipulation of said proximal shaft end by the user.
Claim 3
Dependent Claim 25 words
The apparatus as claimed in claim 1 wherein said puncture means comprises at least one tine positioned between said lobes, said tine piercing said tissue.

References Cited (Backward Citations)

US2660169A Cited
US3548830A Cited
GB2139901A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1995-02-10 1995-08-12 1996-02-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1999-02-10 1999-08-12 2000-02-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2003-02-10 2003-08-12 2004-02-11 $7700.00 Window Closed / Lapsed

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