WO2002049511A1 - Double lumen pigtail pressure monitoring catheter - Google Patents

Double lumen pigtail pressure monitoring catheter Download PDF

Info

Publication number
WO2002049511A1
WO2002049511A1 PCT/AU2001/001640 AU0101640W WO0249511A1 WO 2002049511 A1 WO2002049511 A1 WO 2002049511A1 AU 0101640 W AU0101640 W AU 0101640W WO 0249511 A1 WO0249511 A1 WO 0249511A1
Authority
WO
WIPO (PCT)
Prior art keywords
catheter
lumen
distal end
perforations
holes
Prior art date
Application number
PCT/AU2001/001640
Other languages
French (fr)
Inventor
Geoffrey Stewart Oldfield
Original Assignee
Oldfield Family Holdings Pty Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oldfield Family Holdings Pty Limited filed Critical Oldfield Family Holdings Pty Limited
Publication of WO2002049511A1 publication Critical patent/WO2002049511A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
    • A61M25/0041—Catheters; Hollow probes characterised by the form of the tubing pre-formed, e.g. specially adapted to fit with the anatomy of body channels
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/021—Measuring pressure in heart or blood vessels
    • A61B5/0215—Measuring pressure in heart or blood vessels by means inserted into the body
    • A61B5/02158—Measuring pressure in heart or blood vessels by means inserted into the body provided with two or more sensor elements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M2025/0001—Catheters; Hollow probes for pressure measurement
    • A61M2025/0003—Catheters; Hollow probes for pressure measurement having an additional lumen transmitting fluid pressure to the outside for measurement
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2210/00—Anatomical parts of the body
    • A61M2210/12—Blood circulatory system
    • A61M2210/125—Heart
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2230/00—Measuring parameters of the user
    • A61M2230/30—Blood pressure

Definitions

  • the present invention relates to an improved medical or surgical catheter for measuring blood pressure in a patient.
  • a surgical catheter comprising an elongate flexible tube having two juxtaposed discrete longitudinally extending lumens, including a first lumen which extends from one (proximal) end of the catheter to the opposite (distal) end thereof and communicating with one or a plurality of holes or perforations in the distal end of the catheter, and a second lumen extending from or adjacent said proximal end to a position adjacent to but set back from said distal end a predetermined distance relative to the distal end of said first lumen, wherein said second lumen communicates with one or a plurality of holes or perforations in the distal end of the catheter separate to and distinct from the holes or perforations which communicate with the first lumen, wherein the distal end of the catheter has a pigtail configuration.
  • FIG. 1 is a perspective view of an embodiment of the invention being a left ventricular pressure monitoring catheter of about one metre in length (variable);
  • FIG. 2 is a cross-sectional view of the catheter of Fig. 1 taken along the line 2-2 of
  • FIG. 3 is a further cross-sectional view of the catheter of Fig. 1 taken along the line
  • FIG. 4 is a cut-away longitudinal sectional view of the manifold or union of the catheter of Fig. 1 taken along the line 4-4 of Fig. 2;
  • FIG. 5 is a further cross-sectional view of the catheter of Fig. 1 taken along the line 5-5 of Fig. 1, in the region of the holes or perforations communicating with the second lumen, referred to above;
  • FIG. 6 is another cross-sectional view of the catheter of Fig. 1 taken along the line 6-
  • FIG. 7 is another longitudinal sectional view of the catheter of Fig. 1 taken along the line 7-7 of Fig. 1, showing the separation between the first and second lumen, and the termination of the second lumen.
  • the pressure monitoring catheter 10 comprises an elongate flexible double-lumen tube 11 including a first or central lumen 12 which extends from one (proximal) end 13 of the catheter to the opposite (distal) end 14 thereof, which in use ends in a pigtail 15 which has end and side holes 16 communicating with the central lumen.
  • the second or outer lumen 17 extends from a proximal end 18 of the catheter to a distal end 19 thereof at a position adjacent to but set back a predetermined distance from the distal end of the first lumen, and having side holes 20 communicating with the outer lumen, the side holes being separate to and distinct from the perforations 16 which communicate with the first lumen 12.
  • the distance between the side holes communicating respectively with the first and second lumen is predetermined by anatomical and functional requirements.
  • Each lumen at its respective proximal end 13, 18 is able to be connected to pressure monitoring devices, via manifold 21 and separate connectors 22 and 23.
  • This enables the catheter to measure pressures simultaneously, for example in two cardiac chambers, allowing measurement of pressures in, and any pressure differential between, the two chambers. This is useful, for example, in the monitoring of left ventricular pressure in a patient where there is a need to compare left ventricular to aortic pressure, such as in patients who have aortic stenosis.
  • the catheter is straightened out by threading a Teflon-coated guide wire through the central lumen of the catheter from one end to the other.
  • the wire-threaded catheter is then inserted through a sheath inserted into an artery by the Seldinger technique.
  • the catheter is moved through the aorta and into the left ventricle of the heart, under radiological or X-ray guidance.
  • the guide wire is withdrawn and the distal end 14 of the catheter assumes its pre-set pigtail configuration 15 which is designed to ensure a broader spread of the radio-opaque dye for easier radiological detection of the movement and function of the distal chamber, or the simultaneous measurement of pressures in two chambers.
  • the components of the catheter are fabricated from plastics material which are conventionally used in medical and surgical applications, using known injection moulding and extrusion technologies.

Abstract

A surgical catheter (10) for measuring pressures simultaneously in two cardiac chambers comprises an elongate flexible tube (11) having two juxtaposed discrete longitudinally extending lumens, (12, 17), including a first lumen (12) which extends from one (proximal) end (13) of the catheter to the opposite (distal) end (14) thereof and communicating with one or a plurality of holes or perforations (16) in the distal end of the catheter, and a second lumen (17) extending from or adjacent the proximal end to a position (19) adjacent to but set back the said distal end a predetermined distance relative to the distal end of said first lumen, wherein said second lumen communicates with one or a plurality of holes or perforations (20) in the distal end of the catheter separate to and distinct from the holes or perforations which communicate with the first lumen. The distal end of the catheter has a pigtail configuration (15) which can be straightened out by use of a removable guide wire to facilitate insertion into a surgical patient's heart chamber, wherein the distal end is able to assume its pre-set pigtail configuration when the guide wire is withdrawn.

Description

DOUBLE LUMEN PIGTAIL PRESSURE MONITORING CATHETER
TECHNICAL FIELD
The present invention relates to an improved medical or surgical catheter for measuring blood pressure in a patient.
BACKGROUND ART In cardiac surgery or other cardiac interventional procedures, it is often required to measure or monitor pressures simultaneously in two cardiac chambers, or in two adjacent regions of the circulatory system. This provides a basis for a comparison of pressures, or a pressure differential, between the two chambers or the two regions. For example, on the left side of the heart, it is a common procedure to compare left ventricular to aortic pressure, for instance in patients who have aortic stenosis.
At present, this requires insertion of a catheter (under radiological or X-ray guidance) into the left ventricle of the heart, taking a pressure reading, then withdrawing the catheter into the aorta and taking a second pressure reading, then back into the left ventricle and so forth. This is a delicate and skilled procedure, which is also time-consuming and during which time the patient is exposed to radiation and its potential deleterious side-effects.
DISCLOSURE OF THE INVENTION
It is an object of the present invention to provide a pressure-monitoring surgical catheter which goes at least some way towards overcoming or at least minimising the prior art limitations outlined above, or at the least providing a clear alternative choice for use by medical personnel. It is another object of this invention to provide a surgical catheter which provides for simultaneous access to, and monitoring of, two separate regions of the circulatory system, including the heart.
It is a further object of this invention to provide a surgical catheter which provides for easier placement within the heart or other parts of the circulatory system, with reduced potential for trauma to the patient.
It is yet another object of the invention to provide an improved surgical catheter for selective placement and monitoring of two regions within the circulatory system, which simplifies the task of medical personnel.
It is a purpose of the catheter of this invention to allow the injection of radiological contrast into a distal chamber.
These and other objects of the present invention will become more apparent from the following descriptions and drawings.
According to one aspect of the present invention, there is provided a surgical catheter, comprising an elongate flexible tube having two juxtaposed discrete longitudinally extending lumens, including a first lumen which extends from one (proximal) end of the catheter to the opposite (distal) end thereof and communicating with one or a plurality of holes or perforations in the distal end of the catheter, and a second lumen extending from or adjacent said proximal end to a position adjacent to but set back from said distal end a predetermined distance relative to the distal end of said first lumen, wherein said second lumen communicates with one or a plurality of holes or perforations in the distal end of the catheter separate to and distinct from the holes or perforations which communicate with the first lumen, wherein the distal end of the catheter has a pigtail configuration. BRIEF DESCRDTTION OF THE ACCOMPANYING DRAWINGS
The invention will now be further described with reference to the accompanying drawings relating to one possible non-limiting embodiment of the invention. In the drawings:-
FIG. 1 is a perspective view of an embodiment of the invention being a left ventricular pressure monitoring catheter of about one metre in length (variable); FIG. 2 is a cross-sectional view of the catheter of Fig. 1 taken along the line 2-2 of
Fig. 1; FIG. 3 is a further cross-sectional view of the catheter of Fig. 1 taken along the line
3-3 of Fig. 1; FIG. 4 is a cut-away longitudinal sectional view of the manifold or union of the catheter of Fig. 1 taken along the line 4-4 of Fig. 2; FIG. 5 is a further cross-sectional view of the catheter of Fig. 1 taken along the line 5-5 of Fig. 1, in the region of the holes or perforations communicating with the second lumen, referred to above; FIG. 6 is another cross-sectional view of the catheter of Fig. 1 taken along the line 6-
6 of Fig. 1, in the region of the holes or perforations communicating with the first lumen, referred to above; and FIG. 7 is another longitudinal sectional view of the catheter of Fig. 1 taken along the line 7-7 of Fig. 1, showing the separation between the first and second lumen, and the termination of the second lumen.
BESTMODE OF CARRYING OUTTHEINVENTION According to the embodiment illustrated in Fig. 1, the pressure monitoring catheter 10 comprises an elongate flexible double-lumen tube 11 including a first or central lumen 12 which extends from one (proximal) end 13 of the catheter to the opposite (distal) end 14 thereof, which in use ends in a pigtail 15 which has end and side holes 16 communicating with the central lumen. The second or outer lumen 17 extends from a proximal end 18 of the catheter to a distal end 19 thereof at a position adjacent to but set back a predetermined distance from the distal end of the first lumen, and having side holes 20 communicating with the outer lumen, the side holes being separate to and distinct from the perforations 16 which communicate with the first lumen 12. The distance between the side holes communicating respectively with the first and second lumen is predetermined by anatomical and functional requirements.
Each lumen at its respective proximal end 13, 18 is able to be connected to pressure monitoring devices, via manifold 21 and separate connectors 22 and 23. This enables the catheter to measure pressures simultaneously, for example in two cardiac chambers, allowing measurement of pressures in, and any pressure differential between, the two chambers. This is useful, for example, in the monitoring of left ventricular pressure in a patient where there is a need to compare left ventricular to aortic pressure, such as in patients who have aortic stenosis.
In use, the catheter is straightened out by threading a Teflon-coated guide wire through the central lumen of the catheter from one end to the other. The wire-threaded catheter is then inserted through a sheath inserted into an artery by the Seldinger technique. The catheter is moved through the aorta and into the left ventricle of the heart, under radiological or X-ray guidance. When in position, the guide wire is withdrawn and the distal end 14 of the catheter assumes its pre-set pigtail configuration 15 which is designed to ensure a broader spread of the radio-opaque dye for easier radiological detection of the movement and function of the distal chamber, or the simultaneous measurement of pressures in two chambers.
The components of the catheter are fabricated from plastics material which are conventionally used in medical and surgical applications, using known injection moulding and extrusion technologies.
Although an exemplary embodiment of the present invention has been described and illustrated, it will be apparent to those having ordinary skill in the art that a number of changes, modifications or alterations to the invention described herein may be made, none of which depart from the spirit of the present invention. All such changes, modifications and alterations should therefore be seen as being within the scope of the present invention.
It should be appreciated that the present invention provides a substantial advance in pressure- monitoring catheters, providing all of the hereindescribed advantages without incurring any relative disadvantages.
The term "comprising" as used herein is used in the inclusive sense of "having" or "including'' and not in the exclusive sense of "consisting only of.

Claims

1. A surgical catheter, comprising an elongate flexible tube having two juxtaposed discrete longitudinally extending lumens, including a first lumen which extends from one (proximal) end of the catheter to the opposite (distal) end thereof and communicating with one or a plurality of holes or perforations in the distal end of the catheter separate to and distinct from the holes or perforations which communicate with the first lumen, wherein the distal end of the catheter has a pigtail configuration.
2. A surgical catheter as claimed in claim 1, wherein the holes or perforations which communicate with the first lumen are spaced apart from the holes or perforations which communicate with the second lumen by a length which is predetermined by anatomical and functional requirements relative to a patient.
3. A surgical catheter as claimed in claim 1 or claim 2, wherein the proximal end of each of said first and second lumens is adapted to be connected to a pressure monitoring means.
4. A surgical catheter as claimed in any one of the preceding claims adapted for measuring pressures simultaneously in two cardiac chambers, and any pressure differential between the two chambers.
5. A surgical catheter as claimed in claim 4, adapted to measure the left ventricular pressure and the aortic pressure of a patient.
6. A surgical catheter as claimed in any one of the preceding claims wherein the distal end of the catheter having a pigtail configuration is able to be straightened out by means of a guide wire inserted into the lumen of the distal end having a pigtail configuration for insertion into a patient's heart chamber, and whereby the said distal end is able to assume its pre-set pigtail configuration when the guide wire is withdrawn.
PCT/AU2001/001640 2000-12-19 2001-12-19 Double lumen pigtail pressure monitoring catheter WO2002049511A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPR2170 2000-12-19
AUPR2170A AUPR217000A0 (en) 2000-12-19 2000-12-19 Double lumen pigtail pressure monitoring catheter

Publications (1)

Publication Number Publication Date
WO2002049511A1 true WO2002049511A1 (en) 2002-06-27

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015054296A1 (en) * 2013-10-07 2015-04-16 Cedars-Sinai Medical Center Transcatheter aortic valve implantation pressure wires and uses thereof
CN106345041A (en) * 2016-10-10 2017-01-25 许荣德 Drainage catheter
US10226333B2 (en) 2013-10-15 2019-03-12 Cedars-Sinai Medical Center Anatomically-orientated and self-positioning transcatheter mitral valve
US10507301B2 (en) 2014-01-31 2019-12-17 Cedars-Sinai Medical Center Pigtail for optimal aortic valvular complex imaging and alignment
US10543078B2 (en) 2013-10-16 2020-01-28 Cedars-Sinai Medical Center Modular dis-assembly of transcatheter valve replacement devices and uses thereof
US10820989B2 (en) 2013-12-11 2020-11-03 Cedars-Sinai Medical Center Methods, devices and systems for transcatheter mitral valve replacement in a double-orifice mitral valve
US10869681B2 (en) 2013-10-17 2020-12-22 Cedars-Sinai Medical Center Device to percutaneously treat heart valve embolization
US10869756B2 (en) 2015-03-12 2020-12-22 Cedars-Sinai Medical Center Devices, systems, and methods to optimize annular orientation of transcatheter valves

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5009234A (en) * 1987-04-27 1991-04-23 Eckhard Alt For the thermodilution method of determining cardiac output
US5476453A (en) * 1994-05-20 1995-12-19 Mehta; Sameer Catheter for simultaneous right and left coronary cannulization

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5009234A (en) * 1987-04-27 1991-04-23 Eckhard Alt For the thermodilution method of determining cardiac output
US5476453A (en) * 1994-05-20 1995-12-19 Mehta; Sameer Catheter for simultaneous right and left coronary cannulization

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Cookgroup. Pigtail double lumen central venous catheter sets and trays", PRODUCT INFORMATION, COPYRIGHT COOK INCORPORATED (PDF DOCUMENT), 1997, Retrieved from the Internet <URL:http://www.cookgroup.com/cook_incorporated/pdf/CVCB15.pdf> *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015054296A1 (en) * 2013-10-07 2015-04-16 Cedars-Sinai Medical Center Transcatheter aortic valve implantation pressure wires and uses thereof
CN105611871A (en) * 2013-10-07 2016-05-25 雪松-西奈医学中心 Transcatheter aortic valve implantation pressure wires and uses thereof
US10226333B2 (en) 2013-10-15 2019-03-12 Cedars-Sinai Medical Center Anatomically-orientated and self-positioning transcatheter mitral valve
US10543078B2 (en) 2013-10-16 2020-01-28 Cedars-Sinai Medical Center Modular dis-assembly of transcatheter valve replacement devices and uses thereof
US10869681B2 (en) 2013-10-17 2020-12-22 Cedars-Sinai Medical Center Device to percutaneously treat heart valve embolization
US10820989B2 (en) 2013-12-11 2020-11-03 Cedars-Sinai Medical Center Methods, devices and systems for transcatheter mitral valve replacement in a double-orifice mitral valve
US10507301B2 (en) 2014-01-31 2019-12-17 Cedars-Sinai Medical Center Pigtail for optimal aortic valvular complex imaging and alignment
US10869756B2 (en) 2015-03-12 2020-12-22 Cedars-Sinai Medical Center Devices, systems, and methods to optimize annular orientation of transcatheter valves
CN106345041A (en) * 2016-10-10 2017-01-25 许荣德 Drainage catheter

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