Embolectomy catheter

• US 3,923,065 A
• Filed: 09/09/1974
• Issued: 12/02/1975
• Est. Priority Date: 09/09/1974
• Status: Expired due to Term

• Current Assignee: Ideas For Medicine, Inc. (Vasutech, Inc.)
• Original Assignee: Alvin Barr, Jerome Nozick
• Inventors: Nozick, Jerome, Barr, Alvin
• Primary Examiner(s): Truluck, Dalton L.
• Application Number:
  US05/504,116
• Time in Patent Office: 449 Days
• Field of Search: 128/348,349B,349BV,35R,351,241,246,325,344,328
• US Class Current: 604/102.03
• CPC Class Codes: A61B 17/22 Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for dilators A61M29/00
• CPC Class Codes: A61M 25/10 Balloon catheters A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02; inflatable balloons for placing stents or stent-grafts A61F2/958 ; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00
• CPC Class Codes: A61M 25/10185 Valves

Abstract

An apparatus for driving an embolus from a blood vessel which provides a thin flexible body for insertion into a blood vessel; the body is movable from one side of an embolus to the other side of the embolus by being passed through or around it; an inflatable sleeve on the body with a passage in the body is connected with the interior of the inflatable sleeve so that fluid injected into the passage will inflate the sleeve; there is a second separate passage in the body for the insertion of fluid into the body; passages in the end of the body immediately adjacent to the inflatable sleeve are provided whereby fluid may be discharged into the blood vessel to exert fluid pressure on an embolus and urge it toward a point of discharge at the point of insertion of the catheter apparatus.

Claims

1. An embolectomy catheter comprising:

a. a thin, elongated flexible body insertable in a blood vessel, and dimensioned to fit therein, b. separate, discrete first and second passages in the body, c. a generally tubular expandable sleeve sealed at both ends around the distal portion of the body, the sleeve normally lying close to the body and concentric therewith along its enitre length, d. a passage communicating from the inside of the sleeve through the wall of the body to the first passage in the body, whereby the tubular sleeve may be expanded by fluid applied to the first passage, and may be contracted by relieving fluid pressure applied to the first passage, e. the second passage having a discharge orifice adjacent to the distal end of the body before the sleeve, whereby fluid injected into the second passage may be discharged therefrom, f. a first fitting connected to the first passage, for introducing fluid into the first discrete passage, g. valve means at the first fitting for retaining and releasing a fluid inserted into the first passage, whereby the sleeve may be inflated and deflated, h. a fitting connected to the second passage for receiving a fluid, whereby such fluid so received may pass through the second passage and be discharged from a discharge orifice, i. the discharge orifice in the second passage being positioned immediately adjacent to the inflatable sleeve and thereby to release fluid to drive an embolism away from the sleeve when it is inflated.

2. An embolectomy catheter comprising:

a. the device according to Claim 1, and b. the body bifurcated at the ventral end to separate the discrete first and second passages.

3. An embolectomy catheter comprising:

a. the device according to Claim 1, and b. the body having a generally circular crosssectional area, and a generally smooth external surface before the sleeve.