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US4566436A Expired / Lapsed US ⏱️ 0.0 years remaining

Method for applying and/or keeping an ischaemic area during surgery on the limbs

Assignee: HB VARIX EGNAHEMSVAEGEN 7 S-612 00 FINSPANG
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Filing: 1982-09-30
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Granted: 1986-01-28
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Expires: 2002-09-30
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Abstract

Abstract This invention relates to a device for applying and/or keeping an ischaemic area during surgery on the limbs. The conventional technique is to tightly wrap the limb in question with rubber strips called an Esmarch bandage whereby ischaemia is achieved. This is maintained by means of a conventional tourniquet which is fastened around a thigh or upper arm respectively. During surgery on a ischaemic area it sometimes happens that the surgeon needs to reach the area under the cuff. With a device according to this invention, a so-called roll-on cuff, this disadvantage amongst others is eliminated as the roll-on cuff can be moved during the operation without jeopardizing the ischaemic area. The roll-on cuff consists of an elastic tube (1; 3, 4), preferably of rubber, where the inner cavity is filled with a gas, preferably air, or a liquid. Furthermore the walls of the inner cavity of the tubes are filled with a lubricant (2), preferably silicone oil, to facilitate rolling on and off. The roll-on cuff is locked on a cone-shaped part of a limb by means of another cuff (4) on which the cuff (3), placed on the bigger diameter of the limb, is allowed to roll onto until a state of equilibrium is reached. The friction between the two cuffs is, due to the nature of the material, enough to keep the cuffs (3, 4) in place.

Inventors

  • 👤 Johan Loefqvist

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 15:14
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/12; A61B17/132; A61B17/1322

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 81 words
A method of producing an ischaemic region in a limb during surgery, comprising the steps of: rolling onto the limb a proximal elastic annular tube which is filled with a fluid; thereafter rolling onto the limb a distal elastic annular tube which is filled with a fluid; and thereafter rolling said proximal tube partly onto a portion of said distal tube until a position of equilibrium therebetween is reached in which said tubes are positionally locked against movement along the limb.
Claim 2
Independent Claim 81 words
A method of producing an ischaemic region in a limb during surgery, comprising the steps of: rolling onto the limb a proximal elastic annular tube which is filled with a fluid; thereafter rolling onto the limb a distal elastic annular tube which is filled with a fluid; and thereafter rolling said proximal tube partly onto a portion of said distal tube until a position of equilibrium therebetween is reached in which said tubes are positionally locked against movement along the limb.

References Cited (Backward Citations)

US3756239A Cited
US4066084A Cited
US4228792A Cited
US4269177A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1989-01-27 1989-07-29 1990-01-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1993-01-27 1993-07-29 1994-01-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1997-01-27 1997-07-29 1998-01-28 $7700.00 Window Closed / Lapsed

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