WO1995012421B1 - Apparatus and method for aspirating intravascular, pulmonary and cardiac obstructions - Google Patents

Apparatus and method for aspirating intravascular, pulmonary and cardiac obstructions

Info

Publication number
WO1995012421B1
WO1995012421B1 PCT/US1994/012804 US9412804W WO9512421B1 WO 1995012421 B1 WO1995012421 B1 WO 1995012421B1 US 9412804 W US9412804 W US 9412804W WO 9512421 B1 WO9512421 B1 WO 9512421B1
Authority
WO
WIPO (PCT)
Prior art keywords
catheter
occlusions
distal end
guidewire
lumen
Prior art date
Application number
PCT/US1994/012804
Other languages
French (fr)
Other versions
WO1995012421A1 (en
Filing date
Publication date
Priority claimed from US08/177,852 external-priority patent/US5476450A/en
Application filed filed Critical
Priority to AU11727/95A priority Critical patent/AU1172795A/en
Publication of WO1995012421A1 publication Critical patent/WO1995012421A1/en
Publication of WO1995012421B1 publication Critical patent/WO1995012421B1/en

Links

Abstract

Disclosed is an apparatus and technique for aspirating substances partially or completely occluding blood vessels or chambers of the heart. The aspirator assembly comprises a catheter assembly and a suction member for aspirating substances through the catheter. The catheter assembly comprises a catheter which travels over a guidewire. Exemplary suction members used for aspirating include a syringe or a vacuum reservoir. The method of treating the intravascular site comprises the steps of advancing a catheter assembly through a patient's vasculature until a distal end of the catheter assembly reaches an area close to the site, and aspirating occluding substances in the vicinity of the site through the distal end of the catheter assembly. The method may also include the additional steps of introducing medication through the catheter, and pulverizing the occlusion or any of its residue, prior to aspirating the occluding substances.

Claims

AMENDED CLAIMS
[received by the International Bureau on 31 May 1995 (31.05.95); original claims 1-44 replaced by new claims 1-13 (3 pages)]
1. A method of removing free emboli from an intravascular site, comprising: advancing a catheter having a distal end and a proximal end through a patient's vasculature until said distal end of said catheter extends into an area adjacent said site while said proximal end remains outside of said patient; introducing a medication through said proximal end of said catheter to discharge said medication through said distal end of said catheter; and aspirating said free emboli through said distal end of said catheter and out said proximal end of said catheter without breaking up said free emboli. 2. The method as defined in Claim 1, further including the steps of advancing a guidewire into said patient's vasculature to said site, such that a portion of said guidewire remains outside said patient; and advancing said catheter over said portion of said guidewire remaining outside said patient prior to advancing said catheter through said patient's vasculature.
3. A method as in Claim 1, wherein said medication is a thrombolytic agent or an anticoagulant. . A method of removing occlusions from an intravascular site, comprising: advancing a catheter assembly through a patient's vasculature until a distal end of said catheter assembly is adjacent said site, said catheter assembly comprising: a guidewire having a predetermined diameter, and a distal tip, and a catheter having an elongated tubular body, said catheter being positioned over said guidewire; pulverizing said occlusions using said distal tip of said guidewire to contact said occlusions; and aspirating said occlusions through said catheter.
5. An apparatus for removing intravascular occlusions, comprising: a catheter having an elongated tubular body, said tubular body having at least a first lumen extending therethrough, a proximal end and a distal end; an infusion guide wire for insertion through said first lumen comprising: an elongated tubular body; a proximal end and a distal end adapted to pulverize said occlusions by contacting said occlusions; and a suction member coupled to said proximal and of said catheter for aspirating said occlusions through said elongated tubular body of said catheter.
6. The apparatus of Claim 5, further comprising a second guidewire positioned within said infusion wire and having a distal tip extending through an opening located in said distal end of said infusion wire and shaped to pulverize said occlusions.
7. A method of removing intravascular occlusions, comprising: advancing a catheter assembly through a patient's vasculature until a distal end of said catheter assembly extends into an area adjacent said occlusions, said catheter assembly comprising: a catheter having an elongated tubular body, and a first lumen and a second lumen extending therethrough, a proximal end and a distal end; and a guidewire inserted within said first lumen or said second lumen, for directing said catheter to said area adjacent said occlusions; and aspirating said occlusions through said first lumen or said second lumen and out said distal end of said catheter without breaking up said occlusions.
8. The method of Claim 7, further comprising the step of discharging a thrombolytic agent or anti-coagulant through said first lumen or said second lumen of said catheter, prior to aspirating said occlusions. 47
9. A method of removing occlusions from an intravascular site, comprising: advancing a guidewire through a patient's vasculature until a distal end of said guidewire is adjacent said occlusions; advancing a hollow catheter over said guidewire until a distal end of said catheter is adjacent said site, removing said guidewire from said catheter; advancing an infusion wire comprising an elongated tubular body, a proximal end, and a distal tip into said hollow catheter until the distal tip of said infusion wire is adjacent said site; introducing a medication through said proximal end of said infusion wire to discharge said medication through said distal tip of said infusion wire; and aspirating said occlusions through said distal end of said catheter, said first lumen or said second lumen of said catheter, and out said proximal end of said catheter without breaking up said occlusions.
10. An apparatus for removing intravascular occlusions, comprising: a catheter having an elongate tubular body, a proximal end and a distal end, said tubular body having at least a first lumen extending therethrough; and a guidewire insertable through said lumen having a distal end shaped to pulverize said occlusions by contact with said occlusions.
11. The apparatus of Claim 10, further comprising a suction member connected to said proximal end of said catheter for aspirating said occlusions through said catheter.
12. The apparatus of Claim 11, wherein said suction member is a syringe.
13. The apparatus of Claim 11, wherein said suction member is a vacuum reservoir.
PCT/US1994/012804 1993-11-04 1994-11-04 Apparatus and method for aspirating intravascular, pulmonary and cardiac obstructions WO1995012421A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU11727/95A AU1172795A (en) 1993-11-04 1994-11-04 Apparatus and method for aspirating intravascular, pulmonary and cardiac obstructions

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US14815693A 1993-11-04 1993-11-04
US08/148,156 1993-11-04
US08/177,852 1994-01-05
US08/177,852 US5476450A (en) 1993-11-04 1994-01-05 Apparatus and method for aspirating intravascular, pulmonary and cardiac obstructions

Publications (2)

Publication Number Publication Date
WO1995012421A1 WO1995012421A1 (en) 1995-05-11
WO1995012421B1 true WO1995012421B1 (en) 1995-06-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1994/012804 WO1995012421A1 (en) 1993-11-04 1994-11-04 Apparatus and method for aspirating intravascular, pulmonary and cardiac obstructions

Country Status (3)

Country Link
US (1) US5476450A (en)
AU (1) AU1172795A (en)
WO (1) WO1995012421A1 (en)

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