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WO1990011722A1 - Appareil permettant de mettre en place et d'immobiliser un catheter - Google Patents

Appareil permettant de mettre en place et d'immobiliser un catheter Download PDF

Info

Publication number
WO1990011722A1
WO1990011722A1 PCT/US1990/001851 US9001851W WO9011722A1 WO 1990011722 A1 WO1990011722 A1 WO 1990011722A1 US 9001851 W US9001851 W US 9001851W WO 9011722 A1 WO9011722 A1 WO 9011722A1
Authority
WO
WIPO (PCT)
Prior art keywords
wall
tube
catheter
lumen
laser beam
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/US1990/001851
Other languages
English (en)
Inventor
Michael A. Martinelli
William E. Hagel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
INTRA-SONIX Inc
Intra Sonix Inc
Original Assignee
INTRA-SONIX Inc
Intra Sonix Inc
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 INTRA-SONIX Inc, Intra Sonix Inc filed Critical INTRA-SONIX Inc
Publication of WO1990011722A1 publication Critical patent/WO1990011722A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/012—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor
    • A61B1/018—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor for receiving instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
    • A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
    • A61B18/22—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
    • A61B18/24—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor with a catheter
    • A61B18/245—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor with a catheter for removing obstructions in blood vessels or calculi
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/12—Diagnosis using ultrasonic, sonic or infrasonic waves in body cavities or body tracts, e.g. by using catheters

Definitions

  • the present invention relates generally to catheters, and more particularly to apparatus for stabilizing a catheter in a blood vessel or other lumen.
  • Catheters comprising a mechanism for immobilizing the body of the catheter against an interior wall of a lumen in which the catheter is disposed are known, as illustrated in U.S. Patents Nos. 4,733,669 and 4,794,931.
  • such mechanisms comprise a unitary, radially-expandable member, such as a balloon or a single flexible wire, attached to the front or distal end of the catheter.
  • the balloon or flexible wire is manipulated so as to force the end portion of the catheter against the interior wall of the lumen, thereby securing the catheter in place.
  • the insertion of known diagnostic/therapeutic catheters in a lumen may abrade or otherwise physically damage the wall of the lumen due to the relatively inflexible nature of the catheter. Additionally, once the diagnostic/therapeutic catheter has been inserted so that its distal end is positioned adjacent a diseased portion of the lumen, the catheter is moved repeatedly both axially and rotationally in conjunction with the therapeutic and diagnostic procedures performed using the catheter. This axial and rotational movement can cause additional abrasion and other physical damage of the lumen.
  • a primary object of the present invention is to provide a device for stabilizing a diagnostic/therapeutic catheter without wedging the catheter against the wall of the lumen, and for permitting such a stabilized catheter to be moved axially and rotationally within a lumen.
  • Another object of the present invention is to provide a device for stabilizing catheters of the type disclosed in U.S. Patent No. 4,821,731 so that portions of the lumen wall can be ultrasonically imaged,.
  • Yet another object of the present invention is to provide a device for stabilizing catheters of the type disclosed in U.S. Patent No. 4,821,731 within a lumen so that laser energy can be precisely directed from within the lumen toward predetermined areas of the lumen.
  • Still another object of the present invention is to provide a device for protecting a lumen so as to permit a diagnostic/therapeutic catheter to be moved axially and rotationally in the lumen without physically damaging the lumen.
  • a bearing catheter comprising a hollow, preferably flexible tube member shaped for receiving a catheter so that the catheter is free to move axially and rotationally within the tube member along and about an axis of movement, while being restrained from moving radially within the tube member.
  • the tube member is sized so as to facilitate its movement through a curved lumen with branches, such as a coronary artery. Due to the sinuous nature of such lumens, after the tube member has been inserted some distance into the lumen, the tube member will be substantially immobilized within the lumen.
  • the catheter is sized to make a close-sliding fit in the tube member, once the latter has been inserted into the curved lumen, and hence is radially stabilized, the catheter is also radially stabilized relative to the lumen in which it is disposed.
  • the wall of the tube member is constructed of a material which is transmissive to laser energy so that a laser beam of selected wavelength will pass through the tube wall with little or no absorption.
  • the material of the tube wall is further selected to be highly transmissive to ultrasonic energy so that ultrasonic energy originating from the distal end of a catheter inserted within the tube member will pass through the tube wall, toward a particular part of the lumen.
  • the material of the tube wall transmits a sufficient amount of energy reflected from the particular part of the lumen so that an image of the particular part of the lumen may be created from the received ultrasonic energy.
  • Fig. 1 is a side elevational view of the bearing catheter of the present invention
  • Fig. 2 is a side elevational view of the distal end of one embodiment of the bearing catheter, partly broken away to reveal a diagnostic and therapeutic catheter positioned in the bearing catheter;
  • Fig. 3 is a schematic plan view of a vascular system, partly broken away to show (1) a diseased portion on the interior wall of a section of the vascular system and (2) the bearing catheter of the present invention, the latter being partly broken away to reveal a diagnostic and therapeutic catheter disposed therein; and
  • Fig. 4 is a cross-sectional side elevation view of (1) the distal end of one embodiment of the bearing catheter and (2) a guide wire and plug insertion assembly disposed inside the bearing catheter.
  • the present invention is a bearing catheter 20 for receiving and stabilizing the radial position of at least a portion of a diagnostic and therapeutic catheter in a lumen of a living body, while permitting the diagnostic and therapeutic catheter to be moved rotationally and axially within the bearing catheter.
  • Catheter 100 has a cylindrical exterior configuration over the majority of its length and comprises a distal end 102, an optical assembly 104 positioned adjacent the distal end for folding a laser beam transmitted through optical fibers in the catheter so that the laser beam is projected from the catheter along an axis extending transversely to the longitudinal axis of the catheter, and a transducer assembly 106 positioned adjacent the optical assembly.
  • bearing catheter 20 comprises an elongate flexible tube 22 having a hollow interior 24.
  • the latter is sized so that catheter 100 will slide freely both axially and rotationally within the interior without moving radially relative to the tube.
  • Tube 22 is additionally sized so that it may be caused to slide axially within a selected lumen.
  • tube 22 preferably first tapers radially inwardly at shoulder 26 and again at its distal end 28.
  • shoulder 26 is spaced about 10 centimeters from distal end 28.
  • Tube 22 is preferably open at both its distal and proximal ends 28 and 30 to provide access to interior 24.
  • tube 22 is sufficiently long so that the distal end can be positioned at a predetermined location of a lumen.
  • bearing catheter tube 22 is made from a material that will permit a laser beam of selected wavelength, transmitted from the optical assembly 104 of a catheter 100 disposed within the tube, to be transmitted through the tube wall with little or no absorption so that the tube wall will not be damaged by the laser energy.
  • the material from which tube 22 is made is additionally selected so that "sufficient" ultrasonic energy generated by the ultrasonic transducer assembly 106 of catheter 100 disposed within the tube will pass through the wall of the tube, penetrate and reflect from the tissue forming the wall of the lumen in which the stabilizing tube is disposed, and pass back through the wall of the tube to the ultrasonic transducer assembly.
  • the bearing catheter tube 22 will vary depending on the wavelength and intensity of the laser beam and ultrasonic beam generated by the catheter 100 used with tube 22.
  • two suitable materials for tube 22 are polytetrafluoroethylene (“PTFE”) and fluorinated ethylene propylene (“FEP”) , fabricated to have a wall thickness ranging from 2 to 6 mils.
  • PTFE polytetrafluoroethylene
  • FEP fluorinated ethylene propylene
  • Tube 22 comprises a front section 32 (Fig. 1) between shoulder 26 and distal end 28.
  • the configuration of front section 32 varies depending upon the material used to fabricate tube 22.
  • its front section 32 typically has an elongate, cylindrical configuration, except adjacent front end 28 where it tapers radially inward.
  • front portion 32 when tube 22 is made from a relatively stiff material such as PTFE (which is stiffer than FEP) front portion 32 preferably is constructed in the manner illustrated in Fig. 2. More particularly, when tube 22 is fabricated from a relatively stiff material such as PTFE, its front section 32 includes a leading portion 40, an intermediate portion 42 and a trailing portion 44. Portions 40 and 44 have an accordion-like configuration and intermediate portion 42 has a smooth cylindrical configuration. Leading portion 40 preferably tapers radially inwardly at distal end 28. Optionally, trailing portion 44, intermediate portion 42, and leading portion 40 may all gradually taper radially inwardly toward distal end 28.
  • PTFE which is stiffer than FEP
  • portions 40, 42, and 44 will vary based on the lumen dimension and configuration within which the tube member is to be used.
  • the length of intermediate portion 42 is typically selected based on (1) the configuration (i.e. straight or curved) of the portion of the lumen in which the therapeutic/ diagnostic catheter is to be used and/or the degree of flexure to which the portion of the lumen of interest is subjected.
  • intermediate portion 42 has a length of about 0.5 cm
  • portion 42 has a length of about 1 cm
  • portion 42 has a length of about 1 cm
  • portion 42 has a length of about 2 cm
  • Satisfactory lengths for leading portion 40 and trailing portion 42 are about 3 cm and 10 cm, respectively.
  • Leading and trailing portions 40 and 44 are provided with an accordion-like configuration so that front portion 32 of tube 22 may be readily passed through a sinuous lumen passageway without kinking.
  • catheter 100 is preferably positioned entirely within bearing catheter 20 so that optical assembly 104 and transducer assembly 106 are disposed in intermediate portion 42.
  • intermediate portion 42 has a smooth cylindrical configuration to minimize interference with the transmission of ultrasonic and laser energy therethrough.
  • tube 22 When tube 22 is made from PTFE or FEP, the tube tends to expand and contract along its length, depending upon the direction of movement of the tube. Such stretching makes it difficult to maintain catheter 100 in selected registration with bearing catheter 20, since catheter 100 does not stretch appreciably along its length. It is highly desirable to maintain selected registration between portion 42 of catheter 20 and distal end 102 of catheter 100 to ensure the portion 42 of catheter 20 is actually positioned in the location indicated by the image of the lumen in which the catheters are disposed.
  • a braided sheath 50 (Fig. 1) of substantially non-axially extensible fibers is preferably attached to the exterior surface 24 of all but the front portion 32 of tube 22.
  • Suitable materials for the fibers of sheath 50 include stainless steel wire having a diameter of about 1.5 mils.
  • the FEP or PTFE embodiments of bearing catheter 20 is partially inserted into a selected lumen 210, e.g. an artery, through an opening 212 formed in the lumen.
  • a selected lumen 210 e.g. an artery
  • this partial insertion is effected by first inserting a conventional guide wire (not shown) into the selected lumen 210 until the leading end of the guide wire is positioned past the diseased portion 214 of interest on the inner » wall of the lumen.
  • a portion of the tube 22 is inserted on the guide wire and moved along the guide wire until the distal end 28 extends beyond the diseased portion 24.
  • Catheter 100 is then inserted into hollow interior 24 of tube 22, preferably through the opening in the proximal end 30 of the tube positioned outside the body.
  • hollow interior 24 of tube 22 is sized so that catheter 100 can be moved freely relative to the tube and lumen along the length of the hollow interior.
  • Catheter 100 is moved within stabilizing tube 22 until the former is adjacent the portion 214 of lumen 210 to be examined and possibly treated by a laser beam transmitted from the catheter 100.
  • the site can be determined by fluoroscopic imaging as previously described. After a satisfactory image of portion 214 of lumen 210 is generated using imaging information generated by ultrasonic transducer assembly 106 and processed by the the imaging system of the '731 patent, if the laser treatment is indicated the laser beam is transmitted via optical assembly 104, based on the image data, so as to expose portion 214 to absorptive radiation.
  • lumen 210 curves over its length so as to define a sinuous path, and/or repeatedly splits into several lumen of decreasing diameter, as for example the coronary arteries as they extend toward the heart, once bearing catheter 20 has been fully inserted into the lumen, radial movement of the bearing catheter is limited because the latter becomes loosely captivated within the curved walls of the lumen. This stabilization of the catheter is important to generate an accurate image of the lumen 210 and to accurately control the direction of the laser beam transmitted from the catheter 100.
  • Bearing catheter 20 may optionally be adapted for attachment to a fluid supply source (not shown) .
  • fluid can be supplied through the tube or tube member to a selected region within the lumen.
  • bearing catheter 20 is typically inserted in a lumen using a guide wire, as described above, under certain circumstances, for instance when the lumen has a particularly tortuous configuration, it may be desirable to install the bearing catheter using the insertion assembly 300 illustrated in Fig. 4.
  • the insertion assembly 300 is designed to prevent front portion 32 of tube 22 from kinking when the latter is caused to move around a highly curved section of a lumen.
  • Insertion assembly 300 comprises an elongate cylindrical plug 302 and a modified guide wire 304.
  • Plug 302 is made from a relatively rigid material, such as hard rubber, and includes a central bore 306 sized to receive guide wire 304.
  • the outside diameter of plug 302 is slightly less than the inside diameter of front portion 32 of bearing catheter tube 22 so that the former makes a close sliding fit in the latter.
  • the length of plug 302 is about 1 cm when used to install the FEP embodiment of bearing catheter 22, or is substantially equal to the length of intermediate portion 42 of front section 32 when used to install the PTFE embodiment of the bearing catheter.
  • Guide wire 304 is identical to a conventional guide wire, except that it includes a projection stop 310 spaced a selected distance, such as about 3-6 cm, from the distal or leading end 312 of the guide wire.
  • the precise size and shape of stop 310 may vary so long as the stop extends radially from the guide wire a distance sufficient to permit the projection to engage leading edge 314 of plug 302 to insure the plug is removed from tube 20 when the guide wire 304 is withdrawn from the tube 20.
  • plug 302 is installed in the bearing catheter so that it is roughly centered in front section 32 of the FEP embodiment or is received in intermediate portion 42 of the PTFE embodiment, as the case may be. Then, the proximal end (not shown) of guide wire 304 is inserted through the opening in the distal end of the tube 22 and into central bore 306 of plug 302 until stop 310 engages the leading end 314 of the plug. Stop 310 is positioned on guide wire 304 relative to the distal end 312 thereof so that when the insertion assembly 300 has been installed in the manner described above, a portion of the guide wire projects through and beyond the opening in the distal end 28 of tube 22.
  • Bearing catheter 20, with insertion assembly 300 positioned therein, is inserted into the lumen of interest and caused to move inside the lumen until the front section 32 of bearing catheter tube 22 is positioned adjacent the portion of the lumen of interest.
  • plug 302 and guide wire 304 are removed from the opening in the proximal end 30 of tube 22 by pulling on the proximal end of the guide wire. This pulling is transmitted from the guide wire 304 via stop 310 to plug 302 so that the plug and guide wire are extracted.
  • Insertion assembly 300 is particularly useful when the lumen in which bearing catheter 20 is to be inserted has a highly tortuous configuration.
  • plug 302 prevents the front portion from kinking.
  • An important advantage of the bearing catheter system of the present invention is that the present system permits a therapeutic/diagnostic catheter to be supported within a lumen in a stabilized manner so that reliable ultrasonic imaging and laser radiation treatments can be performed while allowing free and rotational movement of the therapeutic/diagnostic catheter within the lumen.
  • the therapeutic or diagnostic catheter is inserted directly into the lumen without a surrounding protective sleeve. Under such conditions, the possibility exists for the catheter to repeatedly contact and possibly abrade, scrape or otherwise physically damage the lumen.
  • An important advantage of the present invention is that once the bearing catheter tube 22 has been positioned in the lumen, a catheter 100 disposed therein can be moved repeatedly both axially and rotationally without contacting the wall of the lumen.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Biophysics (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Pathology (AREA)
  • Optics & Photonics (AREA)
  • Vascular Medicine (AREA)
  • Electromagnetism (AREA)
  • Otolaryngology (AREA)
  • Pulmonology (AREA)
  • Anesthesiology (AREA)
  • Hematology (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)

Abstract

Cathéter porteur (20) permettant de mettre en place et d'immobiliser un cathéter de thérapie/diagnostic (100) à un endroit prédéterminé dans un lumen (210). Ledit cathéter porteur (20) comprend un tube (22) dont la dimension est conçue pour recevoir ledit cathéter de thérapie/diagnostic (100), de sorte que ce dernier puisse bouger de manière axiale et rotative dans le tube (22) tout en étant sensiblement fixé radialement dans celui-ci (22). L'épaisseur de la paroi tubulaire du cathéter porteur (22) ainsi que le matériau dont le tube est fait sont tels que l'on peut faire passer dans ledit tube un rayon laser à longueur d'onde prédéterminée sans ou avec très peu d'absorption d'énergie laser, de sorte que le tube (22) ne sera pas endommagé et que les signaux d'imagerie ultrasoniques pourront aller et venir dans le tube (22).
PCT/US1990/001851 1989-04-04 1990-04-03 Appareil permettant de mettre en place et d'immobiliser un catheter Ceased WO1990011722A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US33310189A 1989-04-04 1989-04-04
US333,101 1989-04-04

Publications (1)

Publication Number Publication Date
WO1990011722A1 true WO1990011722A1 (fr) 1990-10-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1990/001851 Ceased WO1990011722A1 (fr) 1989-04-04 1990-04-03 Appareil permettant de mettre en place et d'immobiliser un catheter

Country Status (2)

Country Link
AU (1) AU5522190A (fr)
WO (1) WO1990011722A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4114826A1 (de) * 1991-05-07 1991-12-05 Eckart Dr Miche System zur perkutanen mitralvalvulotomie
EP0812568A3 (fr) * 1996-06-11 1998-01-07 Roke Manor Research Limited Système et méthode de poursuite de cathéter
EP1362553A1 (fr) * 1996-06-11 2003-11-19 Roke Manor Research Limited Système et méthode de poursuite de cathéter
CN110621251A (zh) * 2017-05-15 2019-12-27 浜松光子学株式会社 导管套组
CN110650701A (zh) * 2017-05-15 2020-01-03 浜松光子学株式会社 光测定装置、导管套组及光测定方法
EP3626198A4 (fr) * 2017-05-15 2021-02-24 Hamamatsu Photonics K.K. Ensemble cathéter

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4445892A (en) * 1982-05-06 1984-05-01 Laserscope, Inc. Dual balloon catheter device
US4526177A (en) * 1983-06-24 1985-07-02 Rudy Michael A Electronic anatomical probe
US4616652A (en) * 1983-10-19 1986-10-14 Advanced Cardiovascular Systems, Inc. Dilatation catheter positioning apparatus
US4756597A (en) * 1985-11-08 1988-07-12 Messerschmitt-Bolkow-Blohm Gmbh Light guide, in particular for medical instruments
US4756313A (en) * 1986-11-05 1988-07-12 Advanced Diagnostic Medical Systems, Inc. Ultrasonic probe
US4821731A (en) * 1986-04-25 1989-04-18 Intra-Sonix, Inc. Acoustic image system and method
US4860743A (en) * 1986-10-27 1989-08-29 University Of Florida Laser method and apparatus for the recanalization of vessels and the treatment of other cardiac conditions
US4878725A (en) * 1987-05-25 1989-11-07 Messerschmitt-Bolkow-Blohm Gmbh Apparatus for the circumferential irradiation of objects
US4887605A (en) * 1988-02-18 1989-12-19 Angelsen Bjorn A J Laser catheter delivery system for controlled atheroma ablation combining laser angioplasty and intra-arterial ultrasonic imagining

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4445892A (en) * 1982-05-06 1984-05-01 Laserscope, Inc. Dual balloon catheter device
US4526177A (en) * 1983-06-24 1985-07-02 Rudy Michael A Electronic anatomical probe
US4616652A (en) * 1983-10-19 1986-10-14 Advanced Cardiovascular Systems, Inc. Dilatation catheter positioning apparatus
US4756597A (en) * 1985-11-08 1988-07-12 Messerschmitt-Bolkow-Blohm Gmbh Light guide, in particular for medical instruments
US4821731A (en) * 1986-04-25 1989-04-18 Intra-Sonix, Inc. Acoustic image system and method
US4860743A (en) * 1986-10-27 1989-08-29 University Of Florida Laser method and apparatus for the recanalization of vessels and the treatment of other cardiac conditions
US4756313A (en) * 1986-11-05 1988-07-12 Advanced Diagnostic Medical Systems, Inc. Ultrasonic probe
US4878725A (en) * 1987-05-25 1989-11-07 Messerschmitt-Bolkow-Blohm Gmbh Apparatus for the circumferential irradiation of objects
US4887605A (en) * 1988-02-18 1989-12-19 Angelsen Bjorn A J Laser catheter delivery system for controlled atheroma ablation combining laser angioplasty and intra-arterial ultrasonic imagining

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4114826A1 (de) * 1991-05-07 1991-12-05 Eckart Dr Miche System zur perkutanen mitralvalvulotomie
EP0812568A3 (fr) * 1996-06-11 1998-01-07 Roke Manor Research Limited Système et méthode de poursuite de cathéter
US5938602A (en) * 1996-06-11 1999-08-17 Roke Manor Research Limited Catheter tracking system and method
EP1362553A1 (fr) * 1996-06-11 2003-11-19 Roke Manor Research Limited Système et méthode de poursuite de cathéter
CN110621251A (zh) * 2017-05-15 2019-12-27 浜松光子学株式会社 导管套组
CN110650701A (zh) * 2017-05-15 2020-01-03 浜松光子学株式会社 光测定装置、导管套组及光测定方法
EP3636193A4 (fr) * 2017-05-15 2021-02-24 Hamamatsu Photonics K.K. Kit cathéter
EP3626198A4 (fr) * 2017-05-15 2021-02-24 Hamamatsu Photonics K.K. Ensemble cathéter
US11389242B2 (en) 2017-05-15 2022-07-19 Hamamatsu Photonics K.K. Catheter kit
TWI782017B (zh) * 2017-05-15 2022-11-01 日商濱松赫德尼古斯股份有限公司 導管套組
CN110650701B (zh) * 2017-05-15 2023-04-18 浜松光子学株式会社 光测定装置、导管套组及光测定方法
CN110621251B (zh) * 2017-05-15 2023-05-02 浜松光子学株式会社 导管套组
US11730540B2 (en) 2017-05-15 2023-08-22 Hamamatsu Photonics K.K. Catheter kit

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