EP0820784A2
Expired / Lapsed
EP
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Balloon catheter and methods of use
Assignee: Knudtson Merril L
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Filing: 1997-07-23
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Granted: —
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Expires: 2017-07-23
Abstract
Abstract A balloon catheter having concentric, elongate lumen and guide tubes defining a lumen therebetween. An annular balloon has its proximal end secured to the lumen tube and its distal end secured to the guide tube. Relative axial movement of the tubes adjusts the balloon between retracted and extended positions. Processes for using the balloon catheter are also disclosed including performing angioplastic procedures on a plurality of stenoses of differing longitudinal extents during a single catheterization procedure, implanting self expanding stents in blood vessels treating occluded blood vessels and apply medications to diseased blood vessels.
Inventors
- 👤 Kirk Johnson
- 👤 Knudtson, M.D.
- 👤 L. Merril
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 16:04
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/95; A61F2/958; A61M; A61M25/00; A61M25/10; A61M25/1006; A61M2025/1043; A61M2025/1068; A61M25/01; A61M25/0105; A61M25/0119; A61M25/104
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
217 words
A balloon catheter comprising: a) an elongate guide tube for sliding along a guide wire in a
patient's blood vessel; b) a lumen tube concentrically disposed about the guide tube such
that the tubes together define an inflation fluid passage of annular cross
section around the guide tube and within the lumen tube; c) structure connected to the lumen tube and defining an inflation
port in fluid communication with the passage; d) the structure including a seal mechanism around the guide tube
for effecting a fluid seal delineating a proximal end of the passage, the seal
mechanism having a seal position fixing the structure and tube against relative
movement axially of the guide tube and a release position permitting relative
movement between the guide tube and the structure axially of the guide tube; e) an inflatable, elongate balloon of annular cross section, the
balloon having a proximal end portion connected to the lumen tube and having
an interior fluid receiving space in fluid communication with the passage; f) the balloon having a distal end portion connected to the guide
tube; and, g) the guide tube and the distal end portion being adjustably
moveable together relative to the lumen tube and the proximal end portion
between retracted and extended positions when the mechanism is in its release
position.
Claim 2
Dependent Claim
22 words
The catheter of Claim 1 wherein the guide tube includes position
indicating indicia for indicating the position of the distal end portion.
Claim 3
Dependent Claim
28 words
The catheter of Claim 2 wherein the indicia are registrable relative to
the structure each to indicate a different relative position of the distal and
proximal end portions.
Claim 4
Dependent Claim
38 words
The catheter of Claim 1 wherein the guide tube and distal end portion
include at least one intermediate position between the retracted and the
extended positions whereby to provide at least three attainable effective
lengths of the balloon.
Claim 5
Dependent Claim
15 words
The catheter of Claim 1 wherein the balloon is formed of a thermo
plastic material.
Claim 6
Dependent Claim
173 words
A catheter for applying medication to a diseased portion of a blood
vessel comprising: a) an elongate balloon; b) a guide for guiding insertion of the catheter into a vessel to be
treated; c) an elongated lumen tube delineating a lumen for delivering
inflation fluid into an interior of the balloon; d) the guide and tube having distal ends respectively connected to
spaced ends of the balloon; e) structure interconnecting the guide and the tube, the structure
including a fluid supply passage for selective delivery and exhaust of fluid to
and from the lumen; f) the balloon being folded on itself with concentric inner and outer
portions around the tube with the inner portion being surrounded and
protected by the outer portion such that the outer portion will shield the inner
portion from contact with a blood vessel as the catheter is inserted into such
vessel; and, g) a medication carried by the inner portion for application to a
diseased section of such vessel after the balloon is appropriately positioned in
such vessel.
References Cited (Backward Citations)
No citation records indexed.
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