EP0346012A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Angiographic catheter
Assignee: Sherwood Medical Co
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Filing: 1989-06-02
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Granted: —
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Expires: 2009-06-02
Abstract
Abstract An improved non-whip angiographic catheter Fig 6 has a preselected number of openings (42,44,46,48,52) of preselected size, location and orientation along the straight portion 20 of the catheter near the distal tip 40 so as to distribute the force of the high-pressure dye injection jets while maintaining the non-whip characteristics. At least one opening 42 in the catheter long portion 20 is provided facing the open end 38 of the tip portion so that the dye trajectories from the catheter tip opening 38 and the catheter long portion opening 42 are generally coplanar and perpendicular so as to interfere with each other for improved dye dispersion. At least two reaction openings 46,48 of predetermined size are provided on the opposite side of the catheter long portion 20 at preselected locations, the dye trajectories of these three reaction openings also being generally coplanar with the trajectories of the first opening and the open end of the catheter tip. The special openings have sufficiently small diameters and are specially staggered so as to reduce the possibility of kinking the catheter during placement of the catheter into position for diagnostic angiography.
Inventors
- 👤 Raymond Otto Bodicky
- 👤 Ronald Crouther
- 👤 Leroy Snyder Forney
- 👤 Andrew Serowski
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 16:00
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0067; A61M25/0068; A61M25/007; A61M25/0021; A61M25/0041
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
199 words
A catheter for performing diagnostic angiography on a patient comprising: a long flexible tubular portion (20); and a flexible tubular end portion (30) on one end of the long portion, the end portion comprising a curved portion (32) and a distal tip portion (34) at an end thereof having an opening (38) therein for passage of a first stream of fluid under pressure therethrough characterised in that the open end of the distal tip faces back in the direction of the catheter and generally parallel to the catheter, the tip opening being positioned so that in use the first stream exits the tip portion (34) spaced away from and in a direction parallel to the long portion, the long portion (20) has a plurality of openings (42,44,46,48,52) therein for passage of a corresponding plurality of streams of fluid under pressure therethrough, the size and location and spacing of each one of said plurality of openings being preselected so as to provide dynamic stability of the end portion when the first and plurality of fluid streams pass through their respective openings, and so as to substantially minimize the potential for causing undesired heart beat patterns and undesired fluid flow patterns.
Claim 2
Dependent Claim
199 words
A catheter for performing diagnostic angiography on a patient comprising: a long flexible tubular portion (20); and a flexible tubular end portion (30) on one end of the long portion, the end portion comprising a curved portion (32) and a distal tip portion (34) at an end thereof having an opening (38) therein for passage of a first stream of fluid under pressure therethrough characterised in that the open end of the distal tip faces back in the direction of the catheter and generally parallel to the catheter, the tip opening being positioned so that in use the first stream exits the tip portion (34) spaced away from and in a direction parallel to the long portion, the long portion (20) has a plurality of openings (42,44,46,48,52) therein for passage of a corresponding plurality of streams of fluid under pressure therethrough, the size and location and spacing of each one of said plurality of openings being preselected so as to provide dynamic stability of the end portion when the first and plurality of fluid streams pass through their respective openings, and so as to substantially minimize the potential for causing undesired heart beat patterns and undesired fluid flow patterns.
Claim 3
Dependent Claim
42 words
A catheter as claimed in claim 1, characterised in that the diameter of each one of the plurality of openings (42,44,46,48,52) is further preselected so as to minimize kinking of the catheter during placement and manoeuvring of the catheter in the patient.
Claim 4
Dependent Claim
59 words
A catheter as claimed in claim 1 or claim 2, characterised in that at least a preselected first one (42) of the plurality of openings (42,44,46,48,52) in the long portion is positioned so that its corresponding stream of fluid exits the catheter in a direction toward and substantially perpendicular to the first stream exiting the tip portion opening (38).
Claim 5
Dependent Claim
80 words
A catheter as claimed in claim 3, characterised in that a preselected second one (44) of the plurality of openings in the long portion 20 is also positioned so that its corresponding stream of fluid exits the catheter in a direction toward and substantially perpendicular to the first stream exiting the tip portion opening (38), the preselected second opening (44) being axially spaced apart from the preselected first opening (42) along the catheter long portion by a predetermined first distance.
Claim 6
Dependent Claim
90 words
A catheter as claimed in claim 4, characterised in that a preselected third one (48) of the plurality of openings in the long portion is positioned so that its corresponding stream of fluid exits the catheter in a direction opposite and substantially parallel to the streams exiting the preselected first (42) and second openings (44), and wherein the predetermined location of the preselected third opening (48) is between and approximately equidistant, in the axial direction along the catheter long portion 20, from the preselected first (42) and second (44) openings.
Claim 7
Dependent Claim
82 words
A catheter as claimed in claim 5, characterised in that a preselected fourth one (88) of the plurality of openings (81,82,83,84,85,86,88) in the long portion is positioned so that its corresponding stream of fluid also exits the catheter in a direction opposite and substantially parallel to the streams exiting the preselected first and second openings (81,83), the predetermined location of the preselected fourth opening (88) being at the preselected first distance axially along the long portion from the preselected third opening (86).
Claim 8
Dependent Claim
88 words
A catheter as claimed in claim 6, characterised in that a preselected fifth one of the plurality of openings in the long portion is positioned so that its corresponding stream of fluid also exits the catheter in a direction opposite and substantially parallel to the streams exiting the preselected first and second openings, the predetermined location of the preselected fifth opening also being at the preselected first distance axially along the long portion from the preselected third opening but in the opposite direction from the preselected third opening.
Claim 9
Dependent Claim
47 words
A catheter as claimed in any one of claims 1 - 7, characterised in that the diameter of each one of the plurality of openings being further preselected so as to minimize a possibility of kinking of the catheter during placement of the catheter in the patient.
Claim 10
Dependent Claim
36 words
A catheter as claimed in any one of the preceding claims, characterised in that the curved portion 32 of the end portion 30 is generally circularly-shaped and extends in an arc of greater than 180 degrees.
Claim 11
Dependent Claim
37 words
A catheter as claimed in claim 9, characterised in that the tip portion 34 at the end of the curved portion 30 is substantially straight, spaced apart from and generally parallel to the catheter long portion 20.
Claim 12
Dependent Claim
228 words
A catheter for performing diagnostic angiography on a patient comprising: a long flexible tubular portion 20; and a flexible tubular end portion 30 on one end of the long portion 20, the end portion 30 comprising a curved portion 32 and a distal tip portion 34 at an end thereof having an opening 38 therein for passage of a first stream of fluid under pressure therethrough, characterised in that the open end, 38, of the distal tip faces back in the direction of the catheter and is generally parallel to the catheter, the tip opening 38 being positioned so that in use the first stream exits the tip portion spaced away from and in a direction parallel to the long portion 20, the long portion 20 has at least a first opening 42 therein for passage of a second stream of fluid under pressure therethrough, in a direction toward and substantially perpendicular to the first stream exiting the tip portion opening, the long portion 20 has at least second 46 and third 48 openings therein for passage of third and fourth streams of fluid under pressure therethrough, respectively, in directions each opposite and substantially parallel to the second stream exiting the long portion, the second and third openings are axially positioned along the long portion 20 about equidistant from and in opposite directions from the second opening 46.
Claim 13
Dependent Claim
228 words
A catheter for performing diagnostic angiography on a patient comprising: a long flexible tubular portion 20; and a flexible tubular end portion 30 on one end of the long portion 20, the end portion 30 comprising a curved portion 32 and a distal tip portion 34 at an end thereof having an opening 38 therein for passage of a first stream of fluid under pressure therethrough, characterised in that the open end, 38, of the distal tip faces back in the direction of the catheter and is generally parallel to the catheter, the tip opening 38 being positioned so that in use the first stream exits the tip portion spaced away from and in a direction parallel to the long portion 20, the long portion 20 has at least a first opening 42 therein for passage of a second stream of fluid under pressure therethrough, in a direction toward and substantially perpendicular to the first stream exiting the tip portion opening, the long portion 20 has at least second 46 and third 48 openings therein for passage of third and fourth streams of fluid under pressure therethrough, respectively, in directions each opposite and substantially parallel to the second stream exiting the long portion, the second and third openings are axially positioned along the long portion 20 about equidistant from and in opposite directions from the second opening 46.
Claim 14
Dependent Claim
230 words
A catheter for performing diagnostic angiography on a patient comprising: a long flexible tubular portion 20; and a flexible tubular end portion 30 on one end of the long portion, the end portion 30 comprising a curved portion 32 and a distal tip portion 34 at an end thereof having an opening 38 therein for passage of a first stream of fluid under pressure therethrough, characterised in that the open end of the distal tip faces back in the direction of the catheter and is generally parallel to the catheter, the tip opening 38 is positioned so that in use the first stream exits the tip portion 38 spaced away from and in a direction parallel to the long portion 20, the long portion 20 has a plurality of openings (42,44,46,48,52) therein for passage of a corresponding plurality of streams of fluid under pressure therethrough, the plurality of openings are oppositely disposed in alternating fashion along the long portion, first away from the and then toward the tip portion, so as to provide dynamic stability of the end portion when the first and plurality of fluid streams pass through their respective openings, and so as to substantially minimize the potential for causing undesired heart beat patterns and undesired fluid flow patterns, and so as to minimize kinking of the catheter during placement and manoevering of the catheter in the patient.
Claim 15
Dependent Claim
230 words
A catheter for performing diagnostic angiography on a patient comprising: a long flexible tubular portion 20; and a flexible tubular end portion 30 on one end of the long portion, the end portion 30 comprising a curved portion 32 and a distal tip portion 34 at an end thereof having an opening 38 therein for passage of a first stream of fluid under pressure therethrough, characterised in that the open end of the distal tip faces back in the direction of the catheter and is generally parallel to the catheter, the tip opening 38 is positioned so that in use the first stream exits the tip portion 38 spaced away from and in a direction parallel to the long portion 20, the long portion 20 has a plurality of openings (42,44,46,48,52) therein for passage of a corresponding plurality of streams of fluid under pressure therethrough, the plurality of openings are oppositely disposed in alternating fashion along the long portion, first away from the and then toward the tip portion, so as to provide dynamic stability of the end portion when the first and plurality of fluid streams pass through their respective openings, and so as to substantially minimize the potential for causing undesired heart beat patterns and undesired fluid flow patterns, and so as to minimize kinking of the catheter during placement and manoevering of the catheter in the patient.
References Cited (Backward Citations)
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