EP0180348A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Guiding catheter
Assignee: Baxter International Inc
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Filing: 1985-10-04
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Granted: —
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Expires: 2005-10-04
Abstract
Abstract A guiding catheter adapted to be passed through the right side of the heart into the pulmonary artery and comprising a catheter body having at least first and second lumens extending longitudinally in the catheter body and a port extending from the first lumen to the exterior of the catheter body. The port is between the ends of the catheter and is in the right heart when the catheter is in use. An elongated stiffening element is locked within the second lumen and extends from a location on the proximal side of the port to a location on the distal side of the port. The stiffening element is flexible, but it is sufficiently stiff to cause the catheter to be gently curved along the stiffening element without forming a kink when the catheter is in use. The first lumen is adapted to have an inner catheter passed through it and out of the port into the right heart.
Inventors
- 👤 David Lyman Swendson
- 👤 Edward Earl Elson
- 👤 Clement Eugene Lieber
- 👤 Michael D. Rold
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 05:39
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/056; A61M; A61M25/00; A61M25/0043; A61M25/0054; A61M25/01; A61M25/0105; A61M2025/0063; A61M25/0021; A61M25/0023; A61M25/0026; A61M25/0032
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
248 words
A guiding catheter capable of being passed through the right side of the heart into the pulmonary artery, said guiding catheter comprising : an elongated catheter body (101) having proximal and distal ends (111, 121), at least one lumen (109) extending longitudinally in the body (101) and a port (72) extending from the lumen (109) to the exterior of the catheter body (101), said port (72) being positioned in relation to the distal end (121) of the catheter such that said port lies in the right ventricle when the catheter extends through the right ventricle into the pulmonary artery; an elongated stiffening element (64) permanently fixed within the catheter body (101), said stiffening element (64) extending from a location on the proximal side of said port (72) to a location on the distal side of said port, said stiffening element (64) being flexible and sufficiently stiff to cause the catheter to form a gentle curve without forming a kink when the catheter extends through the right ventricle to the pulmonary artery; and said lumen (109) being such that an inner catheter can be passed through the lumen (109) and the port (72) into the right ventricle. Characterised in that said stiffener element (64) is curved in its unstressed condition and said catheter body (101) in the region of said port (72) is curved, said stiffener element (64) is held against rotation in the catheter body (101) and said stiffener element (64) resists torsional displacement of the port (72).
Claim 2
Dependent Claim
248 words
A guiding catheter capable of being passed through the right side of the heart into the pulmonary artery, said guiding catheter comprising : an elongated catheter body (101) having proximal and distal ends (111, 121), at least one lumen (109) extending longitudinally in the body (101) and a port (72) extending from the lumen (109) to the exterior of the catheter body (101), said port (72) being positioned in relation to the distal end (121) of the catheter such that said port lies in the right ventricle when the catheter extends through the right ventricle into the pulmonary artery; an elongated stiffening element (64) permanently fixed within the catheter body (101), said stiffening element (64) extending from a location on the proximal side of said port (72) to a location on the distal side of said port, said stiffening element (64) being flexible and sufficiently stiff to cause the catheter to form a gentle curve without forming a kink when the catheter extends through the right ventricle to the pulmonary artery; and said lumen (109) being such that an inner catheter can be passed through the lumen (109) and the port (72) into the right ventricle. Characterised in that said stiffener element (64) is curved in its unstressed condition and said catheter body (101) in the region of said port (72) is curved, said stiffener element (64) is held against rotation in the catheter body (101) and said stiffener element (64) resists torsional displacement of the port (72).
Claim 3
Dependent Claim
51 words
A guiding catheter according to claim 1 including a balloon on said catheter body distally of the port, said catheter body having balloon inflation lumen means communicating with the balloon for use in inflating the balloon and a thermistor carried by the catheter body intermediate said second location and said balloon.
Claim 4
Dependent Claim
43 words
A guiding catheter according to claim 1 or claim 2 or 2 wherein said catheter body has a stiffener lumen and said stiffener element is in said stiffener lumen and said catheter body has an injectate port which leads from the stiffener lumen.
Claim 5
Dependent Claim
49 words
A guiding catheter according to any preceding claim wherein a radial line through the center of the port as viewed in a radial plane forms an angle of no more than about 30 degrees with a radial reference line which bisects the portion of the curve which faces outside.
Claim 6
Dependent Claim
28 words
A guiding catheter according to any _preced-- ing claim wherein said stiffening element in an unstressed condition forms a generally circular arc which extends for over 180 degrees.
Claim 7
Dependent Claim
30 words
A guiding catheter according to any preceding claim wherein said stiffening element has a central section of substantially constant stiffness and end portions of lesser stiffness than said central section.
Claim 8
Dependent Claim
43 words
A guiding catheter according to any prece d - ing claim including means for at least partially closing said one lumen adjacent said port without closing said port to facilitate the passage of the inner catheter through the port into the right heart.
Claim 9
Dependent Claim
15 words
A guiding catheter according to claim 7 wherein said closing means includes a radiopaque plug.
Claim 10
Dependent Claim
40 words
A guiding catheter according to claim 7 or claim 8 wherein said closing means includes a sloping surface facing proximally in said one lumen to facilitate the passage of the inner catheter through the port into the right heart. \
Claim 11
Independent Claim
177 words
A method of pacing the heart comprising: providing a guiding catheter having proximal and distal ends, at least one lumen extending longitudinally in the guiding catheter, a port extending from the lumen to the exterior of the guiding catheter, and an elongated flexible stiffening element permanently fixed within the guiding catheter and held against rotation in the catheter body with the stiffener extending from a location on the proximal side of said port to a location on the distal side of said port; positioning the guiding catheter in a patient with the port being in the right ventricle, the distal end in the pulmonary artery and with the guiding catheter being formed into a curve without forming a kink in extending through the right ventricle to the pulmonary artery, said port being on said curve and the stiffening element resisting torsional displacement of the port on the curve; advancing a cardiac pacing catheter through the lumen out of the port and into contact with a wall of the heart; and pacing the heart with the pacing catheter.
Claim 12
Independent Claim
177 words
A method of pacing the heart comprising: providing a guiding catheter having proximal and distal ends, at least one lumen extending longitudinally in the guiding catheter, a port extending from the lumen to the exterior of the guiding catheter, and an elongated flexible stiffening element permanently fixed within the guiding catheter and held against rotation in the catheter body with the stiffener extending from a location on the proximal side of said port to a location on the distal side of said port; positioning the guiding catheter in a patient with the port being in the right ventricle, the distal end in the pulmonary artery and with the guiding catheter being formed into a curve without forming a kink in extending through the right ventricle to the pulmonary artery, said port being on said curve and the stiffening element resisting torsional displacement of the port on the curve; advancing a cardiac pacing catheter through the lumen out of the port and into contact with a wall of the heart; and pacing the heart with the pacing catheter.
References Cited (Backward Citations)
No citation records indexed.
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