EP0248761A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Vein valve cutter
Assignee: Individual
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Filing: 1987-05-26
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Granted: —
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Expires: 2007-05-26
Abstract
Abstract A cutter (12) for the in-situ cutting of valves within a vein. The cutter comprises a catheter (14) having cutter fingerns (20) extending from its open distal end in an annular pattern. A sheath (24) is selectively extensible over the fingers to shield them from inadvertent contact with the vein being treated. A fiberoptic viewer (22) extends through the catheter (14) to view through its open distal end.
Inventors
- 👤 Albert K. Chin
- 👤 Thomas J. Fogarty
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-22 23:03
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/22; A61B17/221; A61B2017/22097; A61B2017/2215; A61B17/30; A61B2017/303; A61B2017/320733; A61B90/00; A61B90/30; A61B2090/306
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
104 words
An improved in-situ vein valve cutter comprising: a catheter having a through lumen and an open distal end; a plurality of cutter fingers secured at annularly spaced locations around the distal end of said catheter and extending generally longitudinally from said end; a viewing scope extending longitudinally through the lumen of said catheter to view through the open distal end thereof; and a tubular sheath telescopically received around said catheter, said sheath having an open distal end and being movable relative to said catheter to selectively confine the fingers within the sheath or extend the fingers from the open distal end of the sheath.
Claim 2
Dependent Claim
104 words
An improved in-situ vein valve cutter comprising: a catheter having a through lumen and an open distal end; a plurality of cutter fingers secured at annularly spaced locations around the distal end of said catheter and extending generally longitudinally from said end; a viewing scope extending longitudinally through the lumen of said catheter to view through the open distal end thereof; and a tubular sheath telescopically received around said catheter, said sheath having an open distal end and being movable relative to said catheter to selectively confine the fingers within the sheath or extend the fingers from the open distal end of the sheath.
Claim 3
Dependent Claim
30 words
A vein valve cutter according to Claim l wherein said fingers have proximal ends secured to the distal end of said catheter and distal ends which converge toward one another.
Claim 4
Dependent Claim
18 words
A vein valve cutter according to Claim 2 wherein said fingers diverge intermediate said proximal and distal ends.
Claim 5
Dependent Claim
28 words
A vein valve cutter according to Claim l wherein there are four of said cutter fingers disposed at equally spaced intervals around the distal end of said catheter.
Claim 6
Dependent Claim
54 words
A vein valve cutter according to Claim l further comprising: sheath seal means spaced from the distal end of the sheath to prevent fluid flow between the catheter and the sheath; and infusion means disposed intermediate said seal means and the distal end of the sheath to introduce fluid under pressure into said sheath.
Claim 7
Dependent Claim
29 words
A vein valve cutter according to Claim l wherein said viewing scope is telescopically received within the lumen of the catheter for select longitudinal movement relative to the catheter.
Claim 8
Dependent Claim
22 words
A vein valve cutter according to Claim 6 further comprising scope seal means to prevent fluid flow between the scope and catheter.
Claim 9
Dependent Claim
17 words
A vein valve cutter according to Claim l wherein said cutter fingers have inwardly directed knife edges.
Claim 10
Dependent Claim
21 words
A vein valve cutter according to Claim l further comprising a pull-line assembly secured to the distal end of said catheter.
Claim 11
Dependent Claim
73 words
l0. A vein valve cutter according to Claim 9 wherein said pull-line assembly comprises: a loop secured to the distal end of said catheter; an elongated wire having a folded end hooked over said loop; and a sleeve received around said wire, said sleeve having an open end and being movable relative to the wire to selectively confine the folded end within the sleeve or extend the folded end through said open end.
Claim 12
Dependent Claim
30 words
A vein valve cutter according to Claim l0 further comprising wire seal means spaced from the open end of the sleeve to prevent fluid flow between the wire and sleeve.
Claim 13
Dependent Claim
33 words
A vein valve cutter according to Claim ll further comprising secondary infusion means disposed intermediate said seal means and the open end of the sleeve to introduce fluid under pressure into the sleeve.
Claim 14
Dependent Claim
75 words
An improved in-situ vein valve cutter comprising: a flexible elongate element having a distal end; a plurality of cutter fingers secured at annularly spaced locations around the distal end of said element; and a tubular sheath telescopically received around said element, said sheath having an open distal end and being movable relative to said element to selectively confine the fingers within the sheath or extend the fingers from the open distal end of the sheath.
Claim 15
Dependent Claim
75 words
An improved in-situ vein valve cutter comprising: a flexible elongate element having a distal end; a plurality of cutter fingers secured at annularly spaced locations around the distal end of said element; and a tubular sheath telescopically received around said element, said sheath having an open distal end and being movable relative to said element to selectively confine the fingers within the sheath or extend the fingers from the open distal end of the sheath.
Claim 16
Dependent Claim
46 words
A vein valve cutter according to Claim l3 wherein said fingers extend from the distal end of the element, have proximal ends secured to the distal end of the element, and distal ends spaced from the distal end of the element and converging toward one another.
Claim 17
Dependent Claim
18 words
A vein valve cutter according to Claim l4 wherein said fingers diverge intermediate said proximal and distal ends.
Claim 18
Dependent Claim
29 words
A vein valve cutter according to Claim l3 wherein there are four of said cutter fingers disposed at equally spaced intervals around the distal end of the said element.
Claim 19
Dependent Claim
55 words
An improved in-situ vein valve cutter comprising: a catheter having a through lumen and an open distal end; a plurality of cutter fingers secured at annularly spaced locations around the distal end of said catheter; and a viewing scope extending longitudinally through the lumen of said catheter to view through the open distal end thereof.
Claim 20
Dependent Claim
55 words
An improved in-situ vein valve cutter comprising: a catheter having a through lumen and an open distal end; a plurality of cutter fingers secured at annularly spaced locations around the distal end of said catheter; and a viewing scope extending longitudinally through the lumen of said catheter to view through the open distal end thereof.
Claim 21
Dependent Claim
46 words
A vein valve cutter according to Claim l7 wherein said fingers extend from the distal end of the catheter, have proximal ends secured to the distal end of the catheter, and distal ends spaced from the distal end of the catheter and converging toward one another.
Claim 22
Dependent Claim
18 words
A vein valve cutter according to Claim l8 wherein said fingers diverge intermediate said proximal and distal ends.
Claim 23
Dependent Claim
28 words
A vein valve cutter according to Claim l7 wherein there are four of said cutter fingers disposed at equally spaced intervals around the distal end of said catheter.
References Cited (Backward Citations)
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