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US4594996A Expired / Lapsed US ⏱️ 0.0 years remaining

Method for removing objects from tubular body passages

Assignee: Individual
•
Filing: 1985-01-31
•
Granted: 1986-06-17
•
Expires: 2005-01-31
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Abstract

Abstract A device and a method for removing objects from tubular body passages such as arteries, urinary passages, respiratory passages, alimentary canal passages, or other body passages. An elongated element has a ring at its distal end which surrounds the object. On the inside of the ring is a balloon which is constrained by the ring to inflate only inwardly, such that upon the inward inflation it engages and grasps the object to be removed. The device is then withdrawn, whereby the ring and the inflated balloon carry the object with it out of the body passage. Fluid such as air is introduced into and removed from the balloon via a line which runs from the balloon back along the elongated element to the proximal end of the device. A dye line may also be provided, running from the distal end of the device to the proximal end for introducing a dye into the body passage ahead of the ring for diagnostic purposes.

Inventors

  • 👤 Adel A. Ibrahim
  • 👤 Kevin D. Linville
  • 👤 Jerry E. Mays

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 09:34
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/22; A61B17/22031; A61B17/22032; A61M; A61M25/00; A61M25/10; A61M2025/1043; A61M2025/109

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 147 words
A method for removing an object from a tubular body passage of a living being comprising the steps of: introducing a relatively stiff ring, open at both ends, into the tubular body passage, moving the ring through the tubular body passage so as to allow contents within the passage to pass through the ring as the ring moves therethrough, said movement of the ring continuing until the ring surrounds a portion of the object to be removed, controlling said movement of the ring from the exterior of the body, inflating a balloon which is located inside of the ring, while the balloon surrounds a portion of the object, such that the balloon inflates only inwardly, outward movement being restrained by the stiff ring, and withdrawing the ring out of the body passage with the object grasped thereby, to thus remove the object from the tubular body passage.
Claim 2
Independent Claim 147 words
A method for removing an object from a tubular body passage of a living being comprising the steps of: introducing a relatively stiff ring, open at both ends, into the tubular body passage, moving the ring through the tubular body passage so as to allow contents within the passage to pass through the ring as the ring moves therethrough, said movement of the ring continuing until the ring surrounds a portion of the object to be removed, controlling said movement of the ring from the exterior of the body, inflating a balloon which is located inside of the ring, while the balloon surrounds a portion of the object, such that the balloon inflates only inwardly, outward movement being restrained by the stiff ring, and withdrawing the ring out of the body passage with the object grasped thereby, to thus remove the object from the tubular body passage.
Claim 3
Dependent Claim 33 words
A method according to claim 1, including introducing a dye liquid into the tubular body passage beyond the distal end of the ring to diagnose the presence or absence of the object thereat.
Claim 4
Dependent Claim 23 words
A method according to claim 1, wherein the tubular body passage is a blood vessel and the object removed is a blood clot.
Claim 5
Dependent Claim 22 words
A method according to claim 1, wherein the tubular body passage is a urinary passage, and the object removed is a stone.
Claim 6
Dependent Claim 24 words
A method according to claim 1, wherein the tubular body passage is the esophagus, and the object removed is an object blocking the esophagus.

References Cited (Backward Citations)

US2944552A Cited
US3538917A Cited
US3635223A Cited
US3750194A Cited
US3831995A Cited
DE2847633A1 Cited
FR2427973A1 Cited
DE2845094A1 Cited
US4256094A Cited
US4469100A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1989-06-16 1989-12-16 1990-06-17 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1993-06-16 1993-12-16 1994-06-17 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1997-06-16 1997-12-16 1998-06-17 $7700.00 Window Closed / Lapsed

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