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US5036868A Expired / Lapsed US ⏱️ 0.0 years remaining

Anastomosis preparation technique

Assignee: MEDICAL Cos ALLIANCE Inc
•
Filing: 1990-09-06
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Granted: 1991-08-06
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Expires: 2010-09-06
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Abstract

Abstract This invention provides a surgical method for minimizing constrictions in a vessel in a joint area at the site of an anastomotic ring placement. The method includes inserting an upper part of a hollow, T-shaped member through an incision in a vessel. The T-shaped member includes a vertical part comprising a pipe or hose and an upper part which is more elastic than the vertical part and consists essentially of an expansible elongated balloon in an unexpanded state. The elongated balloon is an open communication with the hollow vertical part and can be expanded by pressurizing with a pressure medium through the vertical part into the upper part so as to expand the upper part and thereby substantially uniformly deform a portion of the joined area of the vessel. The method also includes depressurizing the upper part by removing the pressure medium and allowing the upper part to return to its unexpanded state and then removing the upper part from the vessel prior to attachment of an anastomotic ring to the vessel.

Inventors

  • 👤 Anders Berggren
  • 👤 Hakan Rohman
  • 👤 Rafn Ragnarsson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 01:46
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/11

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 166 words
A method for minimizing constrictions in a vessel in a joint area comprising: inserting an upper part of a hollow, T-shaped member through an incision in said vessel, the T-shaped member including a vertical part comprising a pipe or hose, the upper part being more elastic than the vertical part and consisting essentially of an expansible elongated balloon in an unexpanded state, said elongated balloon being in open communication with the hollow vertical part; pressurizing the hollow portion of the upper part by forcing a pressure medium through said vertical part and into the upper part so as to expand the upper part and thereby substantially uniformly a portion of the vessel in said joint area, wherein said pressurizing step expands said vessel to provide additional surface area of vessel material; depressurizing the upper part by removing the pressure medium from the upper part, allowing the upper part to return to its unexpanded state; and removing the upper part of said T-shaped member from said vessel.
Claim 2
Independent Claim 166 words
A method for minimizing constrictions in a vessel in a joint area comprising: inserting an upper part of a hollow, T-shaped member through an incision in said vessel, the T-shaped member including a vertical part comprising a pipe or hose, the upper part being more elastic than the vertical part and consisting essentially of an expansible elongated balloon in an unexpanded state, said elongated balloon being in open communication with the hollow vertical part; pressurizing the hollow portion of the upper part by forcing a pressure medium through said vertical part and into the upper part so as to expand the upper part and thereby substantially uniformly a portion of the vessel in said joint area, wherein said pressurizing step expands said vessel to provide additional surface area of vessel material; depressurizing the upper part by removing the pressure medium from the upper part, allowing the upper part to return to its unexpanded state; and removing the upper part of said T-shaped member from said vessel.
Claim 3
Dependent Claim 30 words
The method of claim 1, wherein the step of depressurization comprises evacuating the upper part causing the upper part to collapse to a size smaller than its original unexpanded state.
Claim 4
Dependent Claim 24 words
The method of claim 1, wherein said pressurizing step comprises expanding the upper part of the T-shaped member to approximately twice its unexpanded size.
Claim 5
Dependent Claim 28 words
The method of claim 1, wherein the pressure medium is provided to the T-shaped member by means of a syringe attached to an end of the vertical part.
Claim 6
Dependent Claim 25 words
The method of claim 3, wherein the upper part of the T-shaped member is approximately 2 millimeters in diameter and approximately 8 millimeters in length.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1994-08-05 1995-02-04 1995-08-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1998-08-05 1999-02-04 1999-08-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2002-08-05 2003-02-04 2003-08-06 $7700.00 Window Closed / Lapsed

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