WO2019194512A1 - Cathéter cérébral à cohérence optique pour chirurgie cérébrovasculaire, et son procédé d'utilisation - Google Patents

Cathéter cérébral à cohérence optique pour chirurgie cérébrovasculaire, et son procédé d'utilisation Download PDF

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Publication number
WO2019194512A1
WO2019194512A1 PCT/KR2019/003822 KR2019003822W WO2019194512A1 WO 2019194512 A1 WO2019194512 A1 WO 2019194512A1 KR 2019003822 W KR2019003822 W KR 2019003822W WO 2019194512 A1 WO2019194512 A1 WO 2019194512A1
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WO
WIPO (PCT)
Prior art keywords
catheter
optical
cerebrovascular surgery
cerebrovascular
passage
Prior art date
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PCT/KR2019/003822
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English (en)
Korean (ko)
Inventor
이종하
김창현
이창영
Original Assignee
계명대학교 산학협력단
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Publication of WO2019194512A1 publication Critical patent/WO2019194512A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0062—Arrangements for scanning
    • A61B5/0066—Optical coherence imaging
    • 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
    • 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
    • A61B1/00163—Optical arrangements
    • A61B1/00165—Optical arrangements with light-conductive means, e.g. fibre optics
    • 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
    • A61B1/313—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 for introducing through surgical openings, e.g. laparoscopes
    • 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
    • A61B1/313—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 for introducing through surgical openings, e.g. laparoscopes
    • A61B1/3137—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 for introducing through surgical openings, e.g. laparoscopes for examination of the interior of blood vessels
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0082—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes
    • A61B5/0084—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes for introduction into the body, e.g. by catheters
    • 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
    • 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
    • A61M25/0009—Making of catheters or other medical or surgical tubes
    • A61M25/0012—Making of catheters or other medical or surgical tubes with embedded structures, e.g. coils, braids, meshes, strands or radiopaque coils
    • 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
    • A61M25/0043—Catheters; Hollow probes characterised by structural features
    • A61M25/0045—Catheters; Hollow probes characterised by structural features multi-layered, e.g. coated
    • 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
    • A61M25/0043—Catheters; Hollow probes characterised by structural features
    • A61M25/005—Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B2017/22001—Angioplasty, e.g. PCTA
    • 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
    • A61M2025/0019—Cleaning catheters or the like, e.g. for reuse of the device, for avoiding replacement
    • 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
    • A61M2025/0042—Microcatheters, cannula or the like having outside diameters around 1 mm or less

Definitions

  • the present invention relates to an optical coherent catheter for intravascular surgery and a method of using the same, and more particularly, to an optical coherent brain catheter for cerebrovascular surgery and a method of using the same.
  • Catheter is one of the common names of tubular instruments and means a tubular device for insertion into an organ with body cavity or lumen.
  • the catheter is used for the discharge of debris in the body cavity or various organs, the aspiration of the cleaning perfusion solution, the measurement of cardiovascular behavior or central venous pressure, the infusion of drugs or contrast agents, etc. Can be configured in the form.
  • intravascular imaging catheter used for the diagnosis of cardiovascular disease
  • intravascular ultrasound, intravascular near-infrared imaging technology, and intravascular optical interference tomography have been commercialized and used in clinical practice.
  • Intravascular optical coherence tomography which is used for intravascular optical coherence tomography, is a catheter-type device that inserts light into a blood vessel, sends light to the blood vessel, and analyzes the returning light to acquire a tomographic image of the blood vessel.
  • Early vascular optical coherence tomography was not widely used because its speed was not as fast as the level of intravascular ultrasound, but recently developed second generation vascular optical coherence tomography technique is more than 10 times faster, resulting in intravascular imaging within seconds. You can shoot. Because light is used, images are obtained by flushing a solution of saline and angiography to minimize the effects of blood.
  • ischemic cerebral infarction is due to atherosclerotic cerebrovascular stenosis and its associated thrombosis or thromboembolism due to cardiac and aortic disease.
  • cerebrovascular stenosis the causes, progression, and infarction patterns vary according to the components of atherosclerotic plaques, so it is very important to know the exact information about the treatment strategy.
  • OCT catheter C7-XR dragonfly imaging catheter, OCT catheter
  • OCT catheter is an imaging device capable of viewing cross-sectional images of coronary stenosis. He is treating stenosis in a more accurate and safe way.
  • OCT catheter is flexible but poorly accessible.
  • FIG. 1 is a diagram illustrating a state in which an OCT catheter is inserted into a coronary artery.
  • the coronary artery is relatively inflexible after the induction catheter is inserted and thus can be accessed as a flexible OCT catheter, but there are two problems in applying the conventional OCT catheter to the cerebrovascular vessel. have. First, it is not well accessible for cerebrovascular vessels that have to go through three to four severe curves.
  • 2 is a diagram showing the severe bending of the cerebrovascular. As shown in FIG. 2, there is severe curvature in the cerebrovascular system.
  • FIG. 3 is a diagram illustrating an OCT catheter for cardiac medicine
  • FIG. 4 is a diagram illustrating an OCT catheter for cardiac medicine.
  • the catheter comes out in front of the OCT lens, there is an inconvenience that the catheter must be inserted into the blood vessel as a whole for the procedure to the required site.
  • Korean Patent Publication No. 10-1397272 name of the invention: a comprehensive imaging catheter system and an image processing system.
  • an object of the present invention is to provide an optical coherent brain catheter for cerebrovascular surgery and a method of using the catheter, thereby enabling a necessary procedure even if less catheter is inserted into the blood vessel.
  • another object of the present invention is to provide an optical coherent brain catheter for cerebrovascular surgery and a method of using the catheter, which can be suitably applied to cerebrovascular vessels by shortening the distal length of the catheter. .
  • an optical coherence brain catheter for cerebrovascular surgery According to a feature of the present invention for achieving the above object, an optical coherence brain catheter for cerebrovascular surgery,
  • An optical path 200 surrounded by the surface 100 and serving as a passage through which a light source and an optical cable pass;
  • wire passage 300 as a passage separate from the optical passage 200, the wire passage 300 is surrounded by the surface 100 and acts as a passage through which the wire passes.
  • the surface 100 Preferably, the surface 100,
  • the twisted portion 120 More preferably, the twisted portion 120,
  • Metal yarn made of stainless steel may be twisted.
  • the surface 100 Preferably, the surface 100,
  • It may be made of polyethylene, polypropylene which is a thermoplastic resin harmless to the human body.
  • the optical path 200 may have a wider cross-sectional area than the wire path 300.
  • the optical path 200 may further include a separator 400 which serves to distinguish the wire path 300.
  • the endothelial integrated membrane 410 may be formed by combining with the endothelial 130 of the surface 100.
  • the separator 400 Preferably, the separator 400,
  • It may be made of polyethylene, polypropylene which is a thermoplastic resin harmless to the human body.
  • the end of the wire passage 300 may further include a washing unit for catheter cleaning.
  • a catheter including an optical path 200 and a wire path 300 is inserted into a blood vessel;
  • the surface 100 Preferably, the surface 100,
  • the twisted portion 120 More preferably, the twisted portion 120,
  • Metal yarn made of stainless steel may be twisted.
  • the surface 100 Preferably, the surface 100,
  • It may be made of polyethylene, polypropylene which is a thermoplastic resin harmless to the human body.
  • the optical path 200 may have a wider cross-sectional area than the wire path 300.
  • the optical path 200 may further include a separator 400 which serves to distinguish the wire path 300.
  • the endothelial integrated membrane 410 may be formed by combining with the endothelial 130 of the surface 100.
  • the separator 400 Preferably, the separator 400,
  • It may be made of polyethylene, polypropylene which is a thermoplastic resin harmless to the human body.
  • the end of the wire passage 300 may further include a washing unit for catheter cleaning.
  • the shaft tube of the catheter is composed of a double hole of an optical path and a wire path, so that the micro wire is in a different direction from the optical cable.
  • the surface of the catheter may be configured to include a twisted portion, thereby increasing accessibility.
  • optical coherence brain catheter for the cerebrovascular surgery proposed in the present invention proposes a method of using the same, by shortening the distal length of the catheter, it can be appropriately applied to the cerebrovascular.
  • FIG. 1 is a view showing the insertion of the OCT catheter in the coronary arteries.
  • FIG. 2 is a diagram showing the severe bending of cerebrovascular.
  • Figure 3 shows an OCT catheter for cardiology.
  • FIG. 4 is a diagram illustrating an OCT catheter for cardiac medicine.
  • FIG. 5 is a block diagram of an optical coherent brain catheter for intravascular cerebrovascular surgery according to one embodiment of the present invention.
  • Figure 6 is a view showing the surface of the catheter portion in the optical coherence brain catheter for intravascular cerebrovascular surgery according to an embodiment of the present invention.
  • FIG. 7 is a cross-sectional view of the catheter according to the position in the optical coherence brain catheter for intravascular cerebrovascular surgery according to another embodiment of the present invention.
  • FIG. 8 is a diagram illustrating an endothelial integrated membrane in an optical coherent brain catheter for cerebrovascular surgery according to another embodiment of the present invention.
  • FIG. 9 is a view showing a state using an optical coherence brain catheter for intravascular cerebrovascular surgery according to an embodiment of the present invention.
  • FIG. 10 is a flow chart of a method of using an optical coherent brain catheter for cerebrovascular surgery.
  • S100 a step in which a catheter including an optical path and a wire path is inserted into a blood vessel
  • step S200 performing optical coherence tomography by passing the optical cable through the optical path of the catheter inserted in step S100
  • FIG. 5 is a block diagram of an optical coherent brain catheter for cerebrovascular surgery according to an embodiment of the present invention.
  • the optically coherent brain catheter for cerebrovascular surgery according to an embodiment of the present invention includes a light source and an optical cable surrounded by a surface 100 and a surface 100 constituting a shaft tube of the catheter. It may be configured to include a light path 200 that acts as a passage, a separate path from the light path 200, and a wire path 300 that acts as a path through which the wire is surrounded by the surface 100.
  • FIG. 6 is a view illustrating the surface 100 of a shaft tube (conduit, shaft tube) in an optical coherent brain catheter for cerebrovascular surgery according to an embodiment of the present invention.
  • Figure 6 (a) is a side view of the catheter 10
  • (b) is a view showing a cross section of the catheter.
  • the twisted portion 120 may be made of a stainless steel material according to the embodiment.
  • OTC catheter for conventional cardiovascular treatment has a problem that the accessibility is poor because there is no portion (Braided) on the surface.
  • the optically coherent brain catheter 10 for intravascular cerebrovascular surgery according to an embodiment of the present invention includes the twisted portion 120, when the catheter is inserted into the severely curved cerebrovascular vessel, the force is better received. To increase the accessibility of the catheter.
  • the outer shell 110 and the inner shell 130 of the catheter surface 100 may be made of polyethylene, polypropylene which is a thermoplastic resin harmless to the human body.
  • the present invention is not limited to the above materials.
  • the optically coherent brain catheter 10 for cerebrovascular surgery is a separator that serves to distinguish between the optical path 200 and the wire path 300. 400 may be configured to further include.
  • the optical path 200 may have a wider cross-sectional area than the wire path 300.
  • FIG. 8 is a diagram illustrating an endothelial integrated membrane in an optical coherence brain catheter for cerebrovascular surgery according to another embodiment of the present invention.
  • the separator 400 may be combined with the endothelial 130 of the catheter conduit surface 100 to form an endothelial integral membrane 410.
  • the material of the separator 400 may be made of polyethylene, polypropylene, which is harmless to the human body, but is not limited thereto.
  • the microwire and the light source can be made to come out in different directions.
  • the microwires can be made to come out to the far side, rather than short to the side at the end of the catheter.
  • the light source can be inserted into a position separate from the micro wires, and the light source does not need to be inserted until the induction wire is inserted. Accordingly, the entire catheter is not integrally inserted into the blood vessel, and the light source is inserted only at a desired portion separately from the degree of catheter insertion as needed, thereby enabling more accessible and convenient procedures.
  • FIG. 9 is a diagram illustrating the use of an optical coherent brain catheter for cerebrovascular surgery.
  • 9 (a) is a diagram illustrating a state of surgery using an existing OCT catheter.
  • the conventional catheter includes a 20 mm protruding portion in front of the OCT lens (light source), so that the catheter passes through the lesion site in the blood vessel to irradiate the lesion site. It shall be inserted further by 20 mm.
  • Figure 9 (b) is a diagram illustrating the operation using an optical coherence brain catheter for intravascular cerebrovascular surgery according to an embodiment of the present invention.
  • the micro wires and the light source (OCT lens) may be emitted in different directions, so that the light source and the catheter tip may be in the same plane. Accordingly, unlike the conventional catheter, it is possible to insert less 20mm unlike the conventional catheter for the procedure, the lesion site required to increase the accessibility.
  • the distal portion is 50 mm long.
  • the optical coherence brain catheter 10 for intravascular cerebrovascular surgery is to shorten the distal length of the catheter, to be appropriately applied to the cerebrovascular.
  • the optical coherent brain catheter 10 for cerebrovascular surgery may further include a washing unit for catheter cleaning at the end of the wire passage 300. If the catheter is made of a single hole, all of the light source, the optical cable portion should be washed to clean the catheter, but the catheter is the same as the optical coherent brain catheter 10 for intravascular cerebrovascular surgery according to an embodiment of the present invention. In the case of a double hole, the washing part is included only in the portion of the wire passage 300 through which the micro wires (induction wires) pass, whereby the catheter can be washed more conveniently.
  • the washing unit described above may clean the catheter by saline flushing into the catheter.
  • FIG. 10 is a flowchart illustrating a method of using an optical coherent brain catheter for cerebrovascular surgery according to an embodiment of the present invention.
  • a method of using an optical coherent brain catheter for cerebrovascular surgery according to an embodiment of the present invention includes a light source surrounded by a surface 100 and a surface 100 constituting a catheter conduit.
  • a method of using a catheter comprising an optical path 200 acting as a passage through which an optical cable passes, and a wire path 300 acting as a passage through which the wire is surrounded by the surface 100 as a path separate from the optical path,
  • the catheter including the passage 200 and the wire passage 300 is inserted into the blood vessel (S100), and the optical coherence tomography by passing the light source and the optical cable through the optical passage 200 of the catheter inserted in step S100 It includes the step of performing.
  • the microtube is formed so that the shaft tube of the catheter is composed of a double hole of an optical channel and a wire channel
  • the surface of the catheter may be configured to include a twisted portion, thereby increasing accessibility.
  • by shortening the distal length of the catheter it can be appropriately applied to cerebrovascular.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Biomedical Technology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Heart & Thoracic Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biophysics (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Optics & Photonics (AREA)
  • Pulmonology (AREA)
  • Anesthesiology (AREA)
  • Hematology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Vascular Medicine (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

Selon un cathéter cérébral à cohérence optique pour chirurgie cérébrovasculaire et son procédé d'utilisation, qui sont présentés dans la présente invention, un tube de tige d'un cathéter comporte un passage optique et un passage de fil en tant que double trous, permettant ainsi à un microfil de sortir dans une direction différente de celle d'un câble optique, et ainsi une intervention nécessaire est permise même si le cathéter n'est pas inséré assez profondément dans un vaisseau sanguin.
PCT/KR2019/003822 2018-04-06 2019-04-01 Cathéter cérébral à cohérence optique pour chirurgie cérébrovasculaire, et son procédé d'utilisation WO2019194512A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2018-0040313 2018-04-06
KR1020180040313A KR102084626B1 (ko) 2018-04-06 2018-04-06 뇌혈관내 수술을 위한 광간섭성 브레인 카테터, 및 그 이용방법

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WO2019194512A1 true WO2019194512A1 (fr) 2019-10-10

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102332076B1 (ko) * 2020-02-10 2021-11-26 계명대학교 산학협력단 뇌혈관내 수술용 광간섭성 단층촬영용 브레인 카테터 및 그 이용방법

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4844062A (en) * 1987-10-23 1989-07-04 Spectranetics Corporation Rotating fiberoptic laser catheter assembly with eccentric lumen
US5156592A (en) * 1990-04-04 1992-10-20 Martin Geoffrey S Pre-curved dual lumen catheter
US5292305A (en) * 1991-09-10 1994-03-08 Cordis Corporation Double-lumen angioscopy catheter
WO1994008523A1 (fr) * 1992-10-21 1994-04-28 Advanced Interventional Systems, Inc. Sonde directionnelle a ablation vers l'avant
KR20120106924A (ko) * 2009-06-30 2012-09-27 마이크로포트 메디컬(샹하이) 캄파니 리미티드 마이크로 카테터

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4844062A (en) * 1987-10-23 1989-07-04 Spectranetics Corporation Rotating fiberoptic laser catheter assembly with eccentric lumen
US5156592A (en) * 1990-04-04 1992-10-20 Martin Geoffrey S Pre-curved dual lumen catheter
US5292305A (en) * 1991-09-10 1994-03-08 Cordis Corporation Double-lumen angioscopy catheter
WO1994008523A1 (fr) * 1992-10-21 1994-04-28 Advanced Interventional Systems, Inc. Sonde directionnelle a ablation vers l'avant
KR20120106924A (ko) * 2009-06-30 2012-09-27 마이크로포트 메디컬(샹하이) 캄파니 리미티드 마이크로 카테터

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KR20190117155A (ko) 2019-10-16

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