US3866599A - Fiberoptic catheter - Google Patents

Fiberoptic catheter Download PDF

Info

Publication number
US3866599A
US3866599A US21966672A US3866599A US 3866599 A US3866599 A US 3866599A US 21966672 A US21966672 A US 21966672A US 3866599 A US3866599 A US 3866599A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
catheter
fibers
tip
light
end
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.)
Expired - Lifetime
Application number
Inventor
Curtis C Johnson
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.)
University of Washington
University of Utah Research Foundation (UURF)
Original Assignee
University of Washington
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
Grant date

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/68Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6846Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
    • A61B5/6847Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive mounted on an invasive device
    • A61B5/6852Catheters
    • A61B5/6859Catheters with multiple distal splines
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/0059Detecting, measuring or recording for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0082Detecting, measuring or recording for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes
    • A61B5/0084Detecting, measuring or recording 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/02Detecting, 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
    • A61B5/021Measuring pressure in heart or blood vessels
    • A61B5/0215Measuring pressure in heart or blood vessels by means inserted into the body
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/145Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
    • A61B5/14503Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue invasive, e.g. introduced into the body by a catheter or needle or using implanted sensors
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/145Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
    • A61B5/1455Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
    • A61B5/1459Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters invasive, e.g. introduced into the body by a catheter
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/68Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6846Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
    • A61B5/6847Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive mounted on an invasive device
    • A61B5/6852Catheters
    • A61B5/6853Catheters with a balloon
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M25/00Catheters; Hollow probes
    • A61M25/0067Catheters; Hollow probes characterised by the distal end, e.g. tips
    • A61M25/0068Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M25/00Catheters; Hollow probes
    • A61M25/0067Catheters; Hollow probes characterised by the distal end, e.g. tips
    • A61M25/0082Catheter tip comprising a tool
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M25/00Catheters; Hollow probes
    • A61M25/10Balloon catheters
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M25/00Catheters; Hollow probes
    • A61M25/0067Catheters; Hollow probes characterised by the distal end, e.g. tips
    • A61M25/0068Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
    • A61M2025/0073Tip designed for influencing the flow or the flow velocity of the fluid, e.g. inserts for twisted or vortex flow
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M25/00Catheters; Hollow probes
    • A61M25/10Balloon catheters
    • A61M2025/1043Balloon catheters with special features or adapted for special applications
    • A61M2025/1052Balloon catheters with special features or adapted for special applications for temporarily occluding a vessel for isolating a sector

Abstract

A catheter of the fiberoptic type is disclosed for insertion into the cardiovascular system. The catheter comprises a flexible element with light-conducting fibers therein extending from one end of the element to the other. A recess is provided adjacent one end of the catheter to prevent the optical fibers from contacting a vessel wall when the catheter is inserted therein.

Description

nited States Paten [1 1 Johnson [4 1 Feb. 18, 1975 FIBEROPTIC CATHETER [75] Inventor: Curtis C. Johnson, Lynnwood,

Wash.

[73] Assignee: The Board of Regents of the University of Washington, Seattle, Wash.

[22] Filed: Jan. 21, 1972 [21] Appl. No.: 219,666

[52] US. Cl. 128/2 L, 128/205 R, 128/6, 128/348, 356/41 [51] Int. Cl. A6lb 10/00, GOln 33/16 [58] Field of Search 128/2 R, 2 M, 2 L, 2.05 R, 128/205 F, 4-8, 348, 349 B; 356/41 [56] References Cited UNITED STATES PATENTS 3,146,775 9/1964 Moore et a1. 128/6 3,253,594 5/1966 Matthews et al. 128/348 3,335,715 8/1967 Hugenholtz ct al..... 128/2 L 3,417,745 12/1968 Sheldon 128/6 3,438,375 4/1969 Ericson 128/349 8 3,690,769 9/1972 Mori 356/41 Primary ExaminerDalt0n L. Truluck [57] ABSTRACT A catheter of the fiberoptic type is disclosed for insertion into the cardiovascular system. The catheter comprises a flexible element with light-conducting fibers therein extending from one end of the element to the other. A recess is provided adjacent one end of the catheter to prevent the optical fibers from contacting a vessel wall when the catheter is inserted therein.

1 Claim, 11 Drawing Figures 'PAIENTEUFEBWH 3,866.599

' SHEET 10F 2 PATENTEU 3.866.599

SHEET 2 BF 2 'll/f Q4 FIBEROPTIC CATHETER The invention described herein was made in the course of work under a grant or award from the Department of Health, Education and Welfare.

BACKGROUND OF THE INVENTION This invention relates, as indicated, to a fiberoptic catheter for insertion into the cardiovascular system to permit in vivo examination of intravascular and intracardiac environments which avoids the effects of wall artifact.

In recent years, developments in the field of fiberoptics have enabled immediate determinations to be made of intravascular andintracardiac blood oxygen saturation by catheterization. To make such determinations, a catheter containing a multiplicity of light conducting fibers, which have their ends exposed adjacent the lead end of the catheter, is inserted into an artery or vein to position the ends of the fibers at a position where the determinations are required. Rapidly al ternating pulses of light are supplied to a number of the fibers which emit light into the blood with the light reflected from the blood carried back through other fibers for photoelectric analysis from which determinations of the bloods oxygen saturation are made.

It has also been proposed previously to utilize a fiberoptic catheter which includes a lumen extending through the catheter to permit measurements of blood pressure. Typically, such catheters comprise a central lumen with the light-conducting fibers spaced concentrically about the lumen in the wall of the catheter.

One of the principal disadvantages in the use of such previously known fiberoptic catheters is the artifact which is created by blood flow fluctuatons and blood vessel wall reflectance. To overcome such problems, it has been proposed to utilize a metal basket in conjunction with the catheter to protect the area around the distal tip of the catheter where the reflectance signals emanate. The use of such a metal basket, which may be in the form of a wire cage, however, promotes clotting which is not only dangerous and interferes with the normal functioning of the cardiovascular system, but also interferes with the operation of the fiberoptic catheter. It is highly desirable, therefore, to provide a catheter which may be used in the determination of blood pressure and oxygen saturation and which is capable of preventing artifact at the distal tip and also prevents a noninjurious surface to the blood vessel wall which minimizes the chances of producing clotting.

SUMMARY OF THE INVENTION The present invention is thus directed to a fiberoptic catheter which may be inserted into the cardiovascular system without incurring the effects of wall artifact. The catheter comprises a flexible element which has a multiplicity of light-conducting fibers extending therethrough and a recess at one end, whereby the tips of the light-conducting fibers are prevented from contacting a vessel wall during or after insertion therein.

DESCRIPTION OF PREFERRED EMBODIMENTS In the annexed drawings:

FIG. 1 is a perspective view showing the catheter of the present invention in conjunction with an optical connector;

FIG. 2 is a fragmentary cross-section view of the tip portion of the catheter taken on line 2--2 of FIG. 1;

FIGS. 3 and 4 are a fragmentary section view and a section view on line 4--4 of FIG 3, respectively, illustrating a further form of tip construction;

FIGS. 5 and 6 are a fragmentary section view and a section view on line 6-6 of FIG. 5 respectively showing yet another form of tip construction;

FIGS. 7, 8, and 9 are fragmentary section view showing further modifications of the catheter; and

FIGS. 10 and 11 are fragmentary section views illustrating the catheter with flow direction inserts positioned therein.

Referring now more particularly to FIG. 1, a catheter, indicated generally by the numeral 1, is shown which comprises an elongated flexible element 2 connected at one end to an optical connector 3 through a protective sheath 4. The optical connector is a standard item, adapted to be slidably inserted into an oximeter, and includes a plurality of openings (not shown) in side 5 through which infra-red and red light can be introduced into the catheter and emitted therefrom for determinations of oxygen saturation in the blood, as will be explained hereinafter. The connector also includes coupling element 6 for connection to a pressure transducer to measure pressure, there being an opening in connector 3 communicating with element 6 and the pressure lumen of the catheter. The element 6 may also be connected to a syringe to take a blood sample or to a saline solution to flush the catheter.

In FIG. 2, one form of tip construction of the catheter is illustrated. The catheter includes a catheter wall 10 which contains a multiplicity of light-conducting fibers 11 extending therethrough from one end of the catheter to the other. The catheter also includes a substantially central lumen 12 which likewise extends thro ughout the length of the catheter for pressure measurements and other uses to be explained. The catheter also includes at the forward tip a recess denoted generally by 13. In this embodiment, the recess is of a generally conical configuration and is formed by the outer surface 14 of wall 10 extending beyond the end of the light-conducting fibers and central lumen.

Due to the recess, when the catheter is inserted into a vessel wall, the light-conducting fibers will not contact the vessel wall. As explained previously, the usefulness of catheters of prior constructions is severely limited due to artifacts created at the distal tip of the catheter. The recess, however, holds the lightconducting fibers away from the vessel wall and thus reduces blood flow velocity at the tip of the fibers and minimizes velocity artifact.

The depth of the recess has been found to be quite important. In general, the recess, that is, the distance between the edge 14 of the catheter wall and the forward edge of the fiberoptics, should be from about 0.2 to about 1.5 millimeters, with the exact depth being somewhat variable depending upon the exact tip construction used and the diameter and configuration of the optical fibers which are used. A depth of about 0.5 to 1.0 millimeters has been found to be very satisfactory. The foregoing dimensions of the recess have been derived experimentally utilizing catheters of different tip constructions. In determining oxygen saturation, infra-red to red light reflected by the blood and returned through the optical fibers to the oximeter is obtained, the ratio being proportional to the oxygen saturation in the blood. Ideally, if the catheter is capable of accurate measurement, the ratio should remain substantially constant in a localized area regardless of the closeness of the catheter tip to a vessel wall, that is, the effect of blood artifact should be eliminated. It has been found that this is achieved with the recessed catheter of the present invention.

Referring now to FIGS. 3 through 6, further forms of catheter tip construction ar shown. In FIGS. 3 and 4, the catheter includes wall which has a ring of lightconducting fibers 21 contained therein. A central lumen 22 is also provided, the fibers being disposed concentrically about the central lumen. The recess 23 is essentially rectangular in configuration, formed by the wall of the catheter extending beyond the end of the light-conducting fibers. In FIGS. 5 and 6, catheter 25 includes a pressure lumen 26 which is positioned in one segment of the catheter, while the light-conducting fibers 27 and positioned in a second segment opposite pressure lumen 26. A partitioning web 28 extends throughout the length of the catheter and interconnects the two segments. The recess 29, as illustrated, again is essentially of rectangular configuration, although it is to be understood that the recess may be of other shapes including a conical configuration as illustrated in FIG. 2.

FIGS. 7, 8 and 9 illustrate further modifications of the catheter of the present invention. In FIG. 7, the catheter 30 is particularly suitable for use in conjunction with a needle which would be inserted in the central pressure lumen 31 for puncturing an artery or vein to enable the catheter to be inserted therein. The catheter includes a tapered outer surface 32 as well as the light-conducting fibers 33 which are tapered at the forward end 34. The recess 35, formed between the end 36 of the catheter and end 34 of the fibers is cylindrical.

In FIG. 8, the catheter 40 includes tubular element 41 which has a pressure lumen 42 and light-conducting fibers 43 therein, connected by partitioning web 44 similar to the catheter illustrated in FIGS. 5 and 6. In FIG. 8, however, the catheter includes an opening or vent 45 in the outer surface of the tube and has an expandable sleeve 46 of neoprene rubber or other suitable thin expandable material attached thereto by clamping rings 47 and 48, which are positioned about the exterior of the catheter. It is to be understood, of course, that other means can be used to attach the expandable sleeve to the catheter including, for example, suitable bio-compatible adhesives. In this embodiment,

the ends of the light-conducting fibers are sealed, as for example, with a plastic or epoxy resin, since the pressure for inflation of the expandable sleeve is introduced through such lumen and opening 45. As shown in FIG.

8, the expandable sleeve, after inflation, resembles a balloon and extends circumferentially about the catheter beyond the forward tip of the same to provide recess 49. To assist in providing a stable recess configuration and to ensure that the inflated balloon assumes the proper position, which does not change due to blood flow and wall forces exerted at the catheter tip, ring 48 extends beyond the tip 50 of the catheter to serve as a stiffener for the balloon, which extends beyond the forward edge of the catheter, when expanded, as shown at 51 to provide a recess of the previously indicated depth of about 0.2 to 1.5 millimeters.

When the catheter tip of FIG. 8 is used, the catheter is inserted into the blood vessel with the expandable sleeve in the deflated position shown in broken line.

After insertion, air pressure is admitted to the catheter through lumen 42 and air vent 45 to expand the sleeve to the position shown in full line. As thus illustrated, the expanded sleeve or balloon acts as an obstruction to 5 blood flow and generates a force on the tip of the catheter which pulls the catheter in the direction of flow, thereby flow directing the catheter tip along the path of flow through the heart chambers into the pulmonary artery. This form of the catheter is highly desirable, as acess to the pulmonary artery in many cases is a clinical necessity. Also, since the recess is formed by the inflated balloon, as described, a smooth non-injurious surface is presented to the blood vessel wall.

Although a Swan-Ganz flow directed catheter, such as that available from Edwards Laboratories Inc., has been used before, it is not a fiberoptic catheter. Moreover, in a fiberoptic catheter, care must be taken to avoid balloon artifact, that is, having the balloon, when expanded, extend too far into the volume of blood illuminated by the fiberoptics and moving in response to flow or wall forces, thereby introducing artifact into the reflected light measurement. As indicated previously, ring 48 positioned as illustrated and the shape and stiffness of the balloon 46, assist in avoiding such problem.

In FIG 9, another form of catheter tip is shown with the catheter 55 including a plurality of flexible fingers 56 of rubber or a suitable plastic positioned at the lead end thereof. The catheter also includes a central lumen 57 and light-conducting fibers 58 as in the embodiments previously discussed. The flexible fingers are designed such that, when the catheter is inserted into the blood vessel through a sheath or needle, the fingers assume the position shown in broken line. After insertion into the blood vessel, however, the fingers are unrestrained and open out into the position shown in full line and thus provide the necessary recessed tip configuration for artifact-free performance, the recess being formed between the tip of fingers 56 and the forward edge of catheter 55. Additionally, when in the unrestrained position, the flexible fingers obstruct the blood flow and provide for flow direction of the catheter in the manner described above with respect to FIG. 8.

In FIGS. 10 and 11, further modifications of the catheter are shown, where a catheter, such as that shown in FIGS. 1 through 7, includes a flow direction insert positioned within the pressure lumen. In FIG. 10, the catheter, denoted generally by numeral 59, includes optical fibers 60 and a flow direction insert 61 extending through the pressure lumen 62. The insert comprises a wire 63 and means 64, such as resilient rubber wings, cup or bulb, on the forward end which extend radially from the wire to provide a flared obstruction for flow direction in the manner described above. In FIG. 11, the flow direction insert is a balloon 65 connected to a tubular element 66. The balloon is, of course, inflatable by application of air pressure through the tubular element. When the balloon is inserted within the catheter, it is partially inflated as shown by the broken line 67, and after insertion beyond the tip of the catheter to the desired flow direction position, the balloon is further inflated as shown at 68 to provide the obstruction to flow and flow direction previously discussed.

The flow direction inserts shown in both FIGS. 10 and l l in the operative position have the flow direction means extending beyond the forward tip of the catheter. The advantages of the catheters of FIGS. 10 and 11 are that flow direction of the catheter in a venous system can be achieved by the inserts, and, when the catheter is in the desired position within the vein, the insert can be removed. In the FIG. form, the insert would be removed simply by withdrawing the same by pulling on wire 63. In FIG 11, the insert would be removed by deflating the balloon 65 to the position shown in broken line at 69 and then withdrawing the same. After the catheter has thus been removed, the lumen is free for pressure monitoring and sampling. The provision of the flow direction inserts thus provides greater versatility for the catheters, since the insert would be used only when flow direction is desired clinically and the need for a balloon to be permanently located at the catheter tip would thus be eliminated.

The materials of which the catheters are constructed are any of those commonly used, including flexible plastics such as nylon, Teflon, vinyls such as polyvinyl chloride, polyurethane and polyethylene, or various rubber compounds. Typically, the catheter will be 5 to 40 inches long and have an outer diameter of about 1 to 2 millimeters. The pressure lumen can vary in diameter, but typically will be about one half to l millimeter in diameter.

I claim:

1. A catheter for insertion into the cardiovascular system comprising an elongated flexible element having a multiplicity of light-conducting fibers extending therethrough, a recess formed in the distal end of the element, the recess cutting across said fibers at an angle to the longitudinal axis of the fibers, the distal end of the catheter preventing the light conducting fibers from contacting said vessel wall, and an expandable sleeve located near the distal end and on the exterior of said catheter whereby upon expansion of the sleeve, it extends beyond said element to further maintain a space between the distal end of the fibers and the end of the sleeve.

Claims (1)

1. A catheter for insertion into the cardiovascular system comprising an elongated flexible element having a multiplicity of light-conducting fibers extending therethrough, a recess formed in the distal end of the element, the recess cutting across said fibers at an angle to the longitudinal axis of the fibers, the distal end of the catheter preventing the light conducting fibers from contacting said vessel wall, and an expandable sleeve located near the distal end and on the exterior of said catheter whereby upon expansion of the sleeve, it extends beyond said element to further maintain a space between the distal end of the fibers and the end of the sleeve.
US3866599A 1972-01-21 1972-01-21 Fiberoptic catheter Expired - Lifetime US3866599A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US3866599A US3866599A (en) 1972-01-21 1972-01-21 Fiberoptic catheter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3866599A US3866599A (en) 1972-01-21 1972-01-21 Fiberoptic catheter

Publications (1)

Publication Number Publication Date
US3866599A true US3866599A (en) 1975-02-18

Family

ID=22820220

Family Applications (1)

Application Number Title Priority Date Filing Date
US3866599A Expired - Lifetime US3866599A (en) 1972-01-21 1972-01-21 Fiberoptic catheter

Country Status (1)

Country Link
US (1) US3866599A (en)

Cited By (161)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3961621A (en) * 1974-02-06 1976-06-08 Akademiet For De Tekniske Videnskaber, Svejsecentralen Surgical tool for taking biological samples
US4222375A (en) * 1978-03-10 1980-09-16 Miguel Martinez In vivo illumination system utilizing a cannula with a conical opening allowing a snap-fit with a conical lens and an aperture for flow of fluids and utilizing a housing with a spherical lens for focusing light onto fiber optics
US4224929A (en) * 1977-11-08 1980-09-30 Olympus Optical Co., Ltd. Endoscope with expansible cuff member and operation section
US4241729A (en) * 1977-08-04 1980-12-30 Machida Endoscope Co., Ltd. Endoscope with gas-tight cap permitting pressurization
US4243040A (en) * 1979-09-17 1981-01-06 Beecher William H Extracting device for removing objects from human body passages
US4271839A (en) * 1979-07-25 1981-06-09 Thomas J. Fogarty Dilation catheter method and apparatus
US4284081A (en) * 1976-12-29 1981-08-18 Kasper Richard F Urinary retention catheter
US4311138A (en) * 1980-03-10 1982-01-19 Sugarman Edward D Illuminated hypodermic needle
WO1982000408A1 (en) * 1980-08-07 1982-02-18 T Fogarty Improved double lumen dilatation catheter
US4321057A (en) * 1979-09-20 1982-03-23 Buckles Richard G Method for quantitative analysis using optical fibers
WO1983001893A1 (en) * 1981-12-01 1983-06-09 Univ California A catheter assembly
US4399099A (en) * 1979-09-20 1983-08-16 Buckles Richard G Optical fiber apparatus for quantitative analysis
US4444185A (en) * 1981-08-19 1984-04-24 Shugar Martin A Fiberoptic tracheotomy method
EP0112148A1 (en) * 1982-12-13 1984-06-27 Sumitomo Electric Industries Limited Endoscope
EP0119614A1 (en) * 1983-03-22 1984-09-26 Sumitomo Electric Industries Limited Fiberscope
EP0121215A1 (en) * 1983-03-31 1984-10-10 Sumitomo Electric Industries Limited Catheter
EP0126152A1 (en) * 1982-11-23 1984-11-28 Beth Israel Hospital A method of treatment of atherosclerosis & a balloon catheter for same.
EP0131659A1 (en) * 1983-07-08 1985-01-23 Vanderbilt University Medical tube and method of use thereof
FR2550454A1 (en) * 1983-08-08 1985-02-15 Angiomedics Inc Catheter has deformable and soft tip
EP0144132A1 (en) * 1983-10-13 1985-06-12 Hobbs Medical, Inc. Contraceptive device
US4537197A (en) * 1981-03-06 1985-08-27 Hulka Jaroslav F Disposable fetal oxygen monitor
WO1985003855A1 (en) * 1984-03-08 1985-09-12 Optical Technologies, Inc. Fluid flow sensing apparatus for in vivo and industrial applications emloying novel differential optical fiber pressure sensors
US4551129A (en) * 1983-04-08 1985-11-05 Coleman D Jackson Technique and apparatus for intraocular and microsurgery including lighter-irrigator hypodermic tube
US4567882A (en) * 1982-12-06 1986-02-04 Vanderbilt University Method for locating the illuminated tip of an endotracheal tube
US4569335A (en) * 1983-04-12 1986-02-11 Sumitomo Electric Industries, Ltd. Fiberscope
US4576146A (en) * 1983-03-22 1986-03-18 Sumitomo Electric Industries, Ltd. Fiberscope
US4693704A (en) * 1982-10-12 1987-09-15 Sumitomo Bakelite Company Limited Cervical canal catheter
EP0238170A2 (en) * 1986-01-22 1987-09-23 Daniel A. Goor Method and apparatus for detecting myocardial ischemia
US4718417A (en) * 1985-03-22 1988-01-12 Massachusetts Institute Of Technology Visible fluorescence spectral diagnostic for laser angiosurgery
US4762120A (en) * 1983-11-08 1988-08-09 Laserscope, Inc. Endoscopic device having handle assembly and catheter assembly
US4773899A (en) * 1982-11-23 1988-09-27 The Beth Israel Hospital Association Method of treatment of artherosclerosis and balloon catheter the same
US4793359A (en) * 1987-04-24 1988-12-27 Gv Medical, Inc. Centering balloon structure for transluminal angioplasty catheter
US4799479A (en) * 1984-10-24 1989-01-24 The Beth Israel Hospital Association Method and apparatus for angioplasty
US4824789A (en) * 1986-10-10 1989-04-25 Cardiovascular Devices, Inc. Gas sensor
US4830013A (en) * 1987-01-30 1989-05-16 Minnesota Mining And Manufacturing Co. Intravascular blood parameter measurement system
US4850348A (en) * 1985-01-23 1989-07-25 Pell Donald M Endotracheal tube apparatus and method
US4867919A (en) * 1986-10-10 1989-09-19 Minnesota Mining And Manufacturing Company Method of making a gas sensor
US4875897A (en) * 1981-06-12 1989-10-24 Regents Of University Of California Catheter assembly
US4878898A (en) * 1987-08-17 1989-11-07 Nova Medical Specialties Thermodilution and pressure transducer balloon catheter
US4913142A (en) * 1985-03-22 1990-04-03 Massachusetts Institute Of Technology Catheter for laser angiosurgery
US4934369A (en) * 1987-01-30 1990-06-19 Minnesota Mining And Manufacturing Company Intravascular blood parameter measurement system
US4951669A (en) * 1987-01-30 1990-08-28 Minnesota Mining And Manufacturing Company Blood parameter measurement system
US4989606A (en) * 1987-01-30 1991-02-05 Minnesota Mining And Manufactoring Company Intravascular blood gas sensing system
US5006314A (en) * 1986-04-18 1991-04-09 Minnesota Mining And Manufacturing Company Sensor and method for sensing the concentration of a component in a medium
US5007704A (en) * 1983-10-28 1991-04-16 Baxter International Inc. Oximeter
US5019075A (en) * 1984-10-24 1991-05-28 The Beth Israel Hospital Method and apparatus for angioplasty
EP0437121A2 (en) * 1989-12-13 1991-07-17 LEFEBVRE, Jean-Marie Filter-catheter combination
US5041108A (en) * 1981-12-11 1991-08-20 Pillco Limited Partnership Method for laser treatment of body lumens
US5048525A (en) * 1987-01-30 1991-09-17 Minnesota Mining And Manufacturing Company Blood parameter measurement system with compliant element
US5090959A (en) * 1987-04-30 1992-02-25 Advanced Cardiovascular Systems, Inc. Imaging balloon dilatation catheter
US5104392A (en) * 1985-03-22 1992-04-14 Massachusetts Institute Of Technology Laser spectro-optic imaging for diagnosis and treatment of diseased tissue
US5116317A (en) * 1988-06-16 1992-05-26 Optimed Technologies, Inc. Angioplasty catheter with integral fiber optic assembly
US5120510A (en) * 1986-10-10 1992-06-09 Minnesota Mining And Manufacturing Company Sensor and method for sensing the concentration of a component in a medium
US5125404A (en) * 1985-03-22 1992-06-30 Massachusetts Institute Of Technology Apparatus and method for obtaining spectrally resolved spatial images of tissue
US5167230A (en) * 1988-11-02 1992-12-01 Nim, Inc. User-wearable hemoglobinometer for measuring the metabolic condition of a subject
US5175016A (en) * 1990-03-20 1992-12-29 Minnesota Mining And Manufacturing Company Method for making gas sensing element
US5178153A (en) * 1984-03-08 1993-01-12 Einzig Robert E Fluid flow sensing apparatus for in vivo and industrial applications employing novel differential optical fiber pressure sensors
US5192278A (en) * 1985-03-22 1993-03-09 Massachusetts Institute Of Technology Multi-fiber plug for a laser catheter
US5195963A (en) * 1990-02-09 1993-03-23 Minnesota Mining And Manufacturing Company Method and system for monitoring of blood constituents in vivo
US5199431A (en) * 1985-03-22 1993-04-06 Massachusetts Institute Of Technology Optical needle for spectroscopic diagnosis
US5201317A (en) * 1988-06-06 1993-04-13 Sumitomo Electric Industries, Ltd. Diagnostic and therapeutic catheter
EP0542246A1 (en) * 1991-11-13 1993-05-19 Becton Dickinson and Company Catheter
US5226430A (en) * 1984-10-24 1993-07-13 The Beth Israel Hospital Method for angioplasty
WO1993017747A1 (en) * 1992-03-02 1993-09-16 Kirkman Thomas R Apparatus and method for retaining a catheter in a blood vessel in a fixed position
US5280786A (en) * 1992-01-21 1994-01-25 Fiberoptic Sensor Technologies, Inc. Fiberoptic blood pressure and oxygenation sensor
US5282464A (en) * 1992-07-21 1994-02-01 Brain Archibald Ian Jeremy Combined laryngeal mask and reflectance oximeter
US5284138A (en) * 1991-07-09 1994-02-08 C. R. Bard, Inc. Apparatus and method for positioning a sensor away from the blood vessel wall
US5285778A (en) * 1991-04-19 1994-02-15 Mackin Robert A Endotracheal tube wih fibers optic illumination and viewing and auxiliary tube
USRE34544E (en) * 1982-11-23 1994-02-15 The Beth Israel Hospital Association Method of treatment of artherosclerosis and balloon catheter the same
US5290275A (en) * 1985-03-22 1994-03-01 Massachusetts Institute Of Technology Catheter for laser angiosurgery
US5295960A (en) * 1992-04-01 1994-03-22 Applied Medical Resources Corporation Catheter with interior balloon
US5304173A (en) * 1985-03-22 1994-04-19 Massachusetts Institute Of Technology Spectral diagonostic and treatment system
US5309894A (en) * 1991-08-03 1994-05-10 Richard Wolf Gmbh Endoscope for introduction into a hollow organ of a living thing
US5333609A (en) * 1992-05-19 1994-08-02 Minnesota Mining And Manufacturing Company Catheter and probe-catheter assembly
US5336205A (en) * 1993-02-25 1994-08-09 Target Therapeutics, Inc. Flow directed catheter
US5335658A (en) * 1992-06-29 1994-08-09 Minnesota Mining And Manufacturing Company Intravascular blood parameter sensing system
US5351693A (en) * 1991-11-08 1994-10-04 Baxter International Inc. Ultrasound probe for use with transport catheter and method of making same
US5402768A (en) * 1992-09-01 1995-04-04 Adair; Edwin L. Endoscope with reusable core and disposable sheath with passageways
US5454807A (en) * 1993-05-14 1995-10-03 Boston Scientific Corporation Medical treatment of deeply seated tissue using optical radiation
US5462052A (en) * 1987-01-30 1995-10-31 Minnesota Mining And Manufacturing Co. Apparatus and method for use in measuring a compositional parameter of blood
US5466234A (en) * 1994-01-31 1995-11-14 Trimedyne, Inc. Expandable laser catheter
US5509900A (en) * 1992-03-02 1996-04-23 Kirkman; Thomas R. Apparatus and method for retaining a catheter in a blood vessel in a fixed position
US5538512A (en) * 1993-02-25 1996-07-23 Zenzon; Wendy J. Lubricious flow directed catheter
US5596987A (en) * 1988-11-02 1997-01-28 Noninvasive Technology, Inc. Optical coupler for in vivo examination of biological tissue
WO1997010748A1 (en) 1995-09-20 1997-03-27 Texas Heart Institute Detecting thermal discrepancies in vessel walls
US5730733A (en) * 1995-06-01 1998-03-24 Scimed Life Systems, Inc. Flow assisted catheter
US5779631A (en) * 1988-11-02 1998-07-14 Non-Invasive Technology, Inc. Spectrophotometer for measuring the metabolic condition of a subject
US5817015A (en) * 1993-06-22 1998-10-06 Adair; Edwin L. Endoscope with reusable core and disposable sheath with passageways
US5836951A (en) * 1986-12-09 1998-11-17 Boston Scientific Corporation Balloon dilation catheter
GB2328879A (en) * 1998-09-19 1999-03-10 Amer Shaikh A nasally or orally intubated device with cuff
US5899892A (en) * 1996-05-31 1999-05-04 Scimed Life Systems, Inc. Catheter having distal fiber braid
US5915383A (en) * 1997-04-29 1999-06-29 Smiths Industries Public Limited Company Cuffed medico-surgical tubes
US5954053A (en) * 1995-06-06 1999-09-21 Non-Invasive Technology, Inc. Detection of brain hematoma
US5954050A (en) * 1997-10-20 1999-09-21 Christopher; Kent L. System for monitoring and treating sleep disorders using a transtracheal catheter
US5987351A (en) * 1995-01-03 1999-11-16 Non-Invasive Technology, Inc. Optical coupler for in vivo examination of biological tissue
US6022309A (en) * 1996-04-24 2000-02-08 The Regents Of The University Of California Opto-acoustic thrombolysis
US6134460A (en) * 1988-11-02 2000-10-17 Non-Invasive Technology, Inc. Spectrophotometers with catheters for measuring internal tissue
WO2001002042A1 (en) 1999-07-02 2001-01-11 Pulmonx Methods, systems, and kits for lung volume reduction
US6193705B1 (en) 1998-10-28 2001-02-27 Scimed Life Systems, Inc. Flow assisted catheter
EP1121955A2 (en) 2000-01-19 2001-08-08 Cordis Neurovascular, Inc. Inflatable balloon catheter seal and method
US6306081B1 (en) * 1998-04-21 2001-10-23 Olympus Optical Co., Ltd. Hood for an endoscope
US6368318B1 (en) 1998-01-23 2002-04-09 The Regents Of The University Of California Opto-acoustic recanilization delivery system
US20020045890A1 (en) * 1996-04-24 2002-04-18 The Regents Of The University O F California Opto-acoustic thrombolysis
US20020077564A1 (en) * 1996-07-29 2002-06-20 Farallon Medsystems, Inc. Thermography catheter
US6485512B1 (en) 2000-09-27 2002-11-26 Advanced Cardiovascular Systems, Inc. Two-stage light curable stent and delivery system
WO2002094087A1 (en) * 2000-10-27 2002-11-28 Pulmonx Sheath and method for reconfiguring lung viewing scope
US6514214B2 (en) 2001-02-13 2003-02-04 Scimed Life Systems, Inc. Intravascular temperature sensor
US20030051733A1 (en) * 2001-09-10 2003-03-20 Pulmonx Method and apparatus for endobronchial diagnosis
US6549795B1 (en) 1991-05-16 2003-04-15 Non-Invasive Technology, Inc. Spectrophotometer for tissue examination
US6615071B1 (en) 1995-09-20 2003-09-02 Board Of Regents, The University Of Texas System Method and apparatus for detecting vulnerable atherosclerotic plaque
US6618614B1 (en) 1995-01-03 2003-09-09 Non-Invasive Technology, Inc. Optical examination device, system and method
US20030171691A1 (en) * 1999-06-25 2003-09-11 Casscells S. Ward Method and apparatus for detecting vulnerable atherosclerotic plaque
US6694181B2 (en) 2001-02-12 2004-02-17 Scimed Life Systems, Inc. Methods and devices for detecting vulnerable plaque
US6708048B1 (en) 1989-02-06 2004-03-16 Non-Invasive Technology, Inc. Phase modulation spectrophotometric apparatus
US20040073191A1 (en) * 2000-10-27 2004-04-15 Pulmonx Methods and devices for obstructing and aspirating lung tissue segments
US20040073132A1 (en) * 2002-05-07 2004-04-15 Tracy Maahs Systems and methods for detecting vulnerable plaque
US6763261B2 (en) 1995-09-20 2004-07-13 Board Of Regents, The University Of Texas System Method and apparatus for detecting vulnerable atherosclerotic plaque
US6785568B2 (en) 1992-05-18 2004-08-31 Non-Invasive Technology Inc. Transcranial examination of the brain
US20040220549A1 (en) * 2003-04-14 2004-11-04 Dittman Jay A. Large diameter delivery catheter/sheath
US20040230179A1 (en) * 2003-02-07 2004-11-18 Alfred E. Mann Institute For Biomedical Engineering Surgical drain with sensors for monitoring fluid lumen
US20050021013A1 (en) * 1997-10-21 2005-01-27 Endo Vasix, Inc. Photoacoustic removal of occlusions from blood vessels
US20050038344A1 (en) * 1998-02-13 2005-02-17 Britton Chance Transabdominal examination, monitoring and imaging of tissue
US20050043596A1 (en) * 1996-07-12 2005-02-24 Non-Invasive Technology, Inc., A Delaware Corporation Optical examination device, system and method
US20050090802A1 (en) * 2003-04-28 2005-04-28 Connors John J.Iii Flexible sheath with varying durometer
US20050197583A1 (en) * 1998-02-11 2005-09-08 Britton Chance Detection, imaging and characterization of breast tumors
US20050228402A1 (en) * 2002-01-24 2005-10-13 Lawrence Hofmann Methods and devices for percutaneous and surgical interventions
US20050228291A1 (en) * 1998-02-11 2005-10-13 Britton Chance Imaging and characterization of brain tissue
US20050228452A1 (en) * 2004-02-11 2005-10-13 Mourlas Nicholas J Steerable catheters and methods for using them
US6994687B1 (en) 2000-01-19 2006-02-07 Cordis Neurovascular, Inc. Inflatable balloon catheter with purge mechanism and method
WO2006055692A2 (en) 2004-11-16 2006-05-26 Pulmonx Pulmonary occlusal stent delivery catheter, loading system and methods of use
WO2006055683A2 (en) 2004-11-16 2006-05-26 Pulmonx Occlusal stent and methods for its use
US7123968B1 (en) 1996-09-20 2006-10-17 The Board Of Regents Of The University Of Texas System Heat treatment of inflamed tissue
US20070142742A1 (en) * 2005-07-13 2007-06-21 Pulmonx Methods and systems for segmental lung diagnostics
US20080161697A1 (en) * 1992-06-17 2008-07-03 Britton Chance Examination of subjects using photon migration with high directionality techniques
US20080188843A1 (en) * 2002-07-10 2008-08-07 Appling William M Device and method for endovascular treatment for causing closure of a blood vessel
US20080221582A1 (en) * 2007-03-05 2008-09-11 Pulmonx Pulmonary stent removal device
US20080221703A1 (en) * 2007-03-09 2008-09-11 Pulmonx Loading a device for a pulmonary implant
US20090062660A1 (en) * 2002-07-10 2009-03-05 Britton Chance Examination and imaging of brain cognitive functions
US7603166B2 (en) 1996-09-20 2009-10-13 Board Of Regents University Of Texas System Method and apparatus for detection of vulnerable atherosclerotic plaque
US20090281402A1 (en) * 1998-02-13 2009-11-12 Britton Chance Transabdominal examination, monitoring and imaging of tissue
US20100036361A1 (en) * 2008-06-20 2010-02-11 Pulmonx System and method for delivering multiple implants into lung passageways
US20100130836A1 (en) * 2008-11-14 2010-05-27 Voyage Medical, Inc. Image processing systems
US7865223B1 (en) 2005-03-14 2011-01-04 Peter Bernreuter In vivo blood spectrometry
US7883471B2 (en) 2001-09-10 2011-02-08 Pulmonx Corporation Minimally invasive determination of collateral ventilation in lungs
US7904139B2 (en) 1999-08-26 2011-03-08 Non-Invasive Technology Inc. Optical examination of biological tissue using non-contact irradiation and detection
US20110152678A1 (en) * 2005-01-20 2011-06-23 Pulmonx Corporation Methods and devices for passive residual lung volume reduction and functional lung volume expansion
US8055321B2 (en) 2005-03-14 2011-11-08 Peter Bernreuter Tissue oximetry apparatus and method
EP2488093A2 (en) * 2009-10-15 2012-08-22 Inventio LLC Disposable and reusable complex shaped see-through endoscope
DE102011106524A1 (en) * 2011-07-04 2013-01-10 Ching-Yuan Hwang Light guide tube for transmission of light beam, has plastic material which surrounds optical waveguide and forms tubular structure, and comprises light entrance and light exit, so that light exit ends are arranged around light exit
US8523782B2 (en) 2005-12-07 2013-09-03 Pulmonx Corporation Minimally invasive determination of collateral ventilation in lungs
US8721534B1 (en) * 2005-02-11 2014-05-13 James D. Luecke Speculum assembly
US8725226B2 (en) 2008-11-14 2014-05-13 Nonin Medical, Inc. Optical sensor path selection
US8876791B2 (en) 2005-02-25 2014-11-04 Pulmonx Corporation Collateral pathway treatment using agent entrained by aspiration flow current
US9050094B2 (en) 2007-03-12 2015-06-09 Pulmonx Corporation Methods and devices for passive residual lung volume reduction and functional lung volume expansion
US20150164632A1 (en) * 1998-08-12 2015-06-18 Maquet Cardiovascular Llc Vessel harvester
US9220396B2 (en) 2011-04-05 2015-12-29 Visualization Balloons, Llc Balloon access device for endoscope
US9451875B2 (en) 2012-12-07 2016-09-27 Cook Medical Technologies Llc Flexible lens
US20160278694A1 (en) * 2015-03-29 2016-09-29 Abraham Aharoni Device for Visual Vein Location
US9782562B2 (en) 2002-04-04 2017-10-10 Angiodynamics, Inc. Venous insufficiency treatment method
US9814513B2 (en) 2011-06-30 2017-11-14 Angiodynamics, Inc. Endovascular plasma treatment device and method of use
US9833126B2 (en) 2011-04-05 2017-12-05 Visualization Balloons, Llc Balloon access device with features for engaging an endoscope

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3146775A (en) * 1962-10-29 1964-09-01 Welch Allyn Inc Illuminating means for medical instruments
US3253594A (en) * 1963-07-30 1966-05-31 Frank E Matthews Peritoneal cannula
US3335715A (en) * 1964-09-18 1967-08-15 American Optical Corp Fiber optic catheter
US3417745A (en) * 1963-08-23 1968-12-24 Sheldon Edward Emanuel Fiber endoscope provided with focusing means and electroluminescent means
US3438375A (en) * 1966-03-18 1969-04-15 Kendall & Co Non-traumatic retention catheter
US3690769A (en) * 1969-12-12 1972-09-12 Olympus Optical Co Endoscope with built-in oximeter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3146775A (en) * 1962-10-29 1964-09-01 Welch Allyn Inc Illuminating means for medical instruments
US3253594A (en) * 1963-07-30 1966-05-31 Frank E Matthews Peritoneal cannula
US3417745A (en) * 1963-08-23 1968-12-24 Sheldon Edward Emanuel Fiber endoscope provided with focusing means and electroluminescent means
US3335715A (en) * 1964-09-18 1967-08-15 American Optical Corp Fiber optic catheter
US3438375A (en) * 1966-03-18 1969-04-15 Kendall & Co Non-traumatic retention catheter
US3690769A (en) * 1969-12-12 1972-09-12 Olympus Optical Co Endoscope with built-in oximeter

Cited By (258)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3961621A (en) * 1974-02-06 1976-06-08 Akademiet For De Tekniske Videnskaber, Svejsecentralen Surgical tool for taking biological samples
US4284081A (en) * 1976-12-29 1981-08-18 Kasper Richard F Urinary retention catheter
US4241729A (en) * 1977-08-04 1980-12-30 Machida Endoscope Co., Ltd. Endoscope with gas-tight cap permitting pressurization
US4224929A (en) * 1977-11-08 1980-09-30 Olympus Optical Co., Ltd. Endoscope with expansible cuff member and operation section
US4222375A (en) * 1978-03-10 1980-09-16 Miguel Martinez In vivo illumination system utilizing a cannula with a conical opening allowing a snap-fit with a conical lens and an aperture for flow of fluids and utilizing a housing with a spherical lens for focusing light onto fiber optics
US4271839A (en) * 1979-07-25 1981-06-09 Thomas J. Fogarty Dilation catheter method and apparatus
US4243040A (en) * 1979-09-17 1981-01-06 Beecher William H Extracting device for removing objects from human body passages
US4399099A (en) * 1979-09-20 1983-08-16 Buckles Richard G Optical fiber apparatus for quantitative analysis
US4321057A (en) * 1979-09-20 1982-03-23 Buckles Richard G Method for quantitative analysis using optical fibers
US4311138A (en) * 1980-03-10 1982-01-19 Sugarman Edward D Illuminated hypodermic needle
WO1982000408A1 (en) * 1980-08-07 1982-02-18 T Fogarty Improved double lumen dilatation catheter
US4318410A (en) * 1980-08-07 1982-03-09 Thomas J. Fogarty Double lumen dilatation catheter
US4537197A (en) * 1981-03-06 1985-08-27 Hulka Jaroslav F Disposable fetal oxygen monitor
US4875897A (en) * 1981-06-12 1989-10-24 Regents Of University Of California Catheter assembly
US4444185A (en) * 1981-08-19 1984-04-24 Shugar Martin A Fiberoptic tracheotomy method
WO1983001893A1 (en) * 1981-12-01 1983-06-09 Univ California A catheter assembly
US5041108A (en) * 1981-12-11 1991-08-20 Pillco Limited Partnership Method for laser treatment of body lumens
US4693704A (en) * 1982-10-12 1987-09-15 Sumitomo Bakelite Company Limited Cervical canal catheter
USRE34544E (en) * 1982-11-23 1994-02-15 The Beth Israel Hospital Association Method of treatment of artherosclerosis and balloon catheter the same
EP0126152A1 (en) * 1982-11-23 1984-11-28 Beth Israel Hospital A method of treatment of atherosclerosis & a balloon catheter for same.
US4773899A (en) * 1982-11-23 1988-09-27 The Beth Israel Hospital Association Method of treatment of artherosclerosis and balloon catheter the same
EP0126152A4 (en) * 1982-11-23 1986-07-30 Beth Israel Hospital A method of treatment of atherosclerosis & a balloon catheter for same.
US4567882A (en) * 1982-12-06 1986-02-04 Vanderbilt University Method for locating the illuminated tip of an endotracheal tube
EP0112148A1 (en) * 1982-12-13 1984-06-27 Sumitomo Electric Industries Limited Endoscope
US4681093A (en) * 1982-12-13 1987-07-21 Sumitomo Electric Industries, Ltd. Endoscope
US4576146A (en) * 1983-03-22 1986-03-18 Sumitomo Electric Industries, Ltd. Fiberscope
EP0119614A1 (en) * 1983-03-22 1984-09-26 Sumitomo Electric Industries Limited Fiberscope
US4619247A (en) * 1983-03-31 1986-10-28 Sumitomo Electric Industries, Ltd. Catheter
EP0121215A1 (en) * 1983-03-31 1984-10-10 Sumitomo Electric Industries Limited Catheter
US4551129A (en) * 1983-04-08 1985-11-05 Coleman D Jackson Technique and apparatus for intraocular and microsurgery including lighter-irrigator hypodermic tube
US4569335A (en) * 1983-04-12 1986-02-11 Sumitomo Electric Industries, Ltd. Fiberscope
EP0131659A1 (en) * 1983-07-08 1985-01-23 Vanderbilt University Medical tube and method of use thereof
FR2550454A1 (en) * 1983-08-08 1985-02-15 Angiomedics Inc Catheter has deformable and soft tip
EP0144132A1 (en) * 1983-10-13 1985-06-12 Hobbs Medical, Inc. Contraceptive device
US5007704A (en) * 1983-10-28 1991-04-16 Baxter International Inc. Oximeter
US4762120A (en) * 1983-11-08 1988-08-09 Laserscope, Inc. Endoscopic device having handle assembly and catheter assembly
WO1985003855A1 (en) * 1984-03-08 1985-09-12 Optical Technologies, Inc. Fluid flow sensing apparatus for in vivo and industrial applications emloying novel differential optical fiber pressure sensors
US5178153A (en) * 1984-03-08 1993-01-12 Einzig Robert E Fluid flow sensing apparatus for in vivo and industrial applications employing novel differential optical fiber pressure sensors
US5019075A (en) * 1984-10-24 1991-05-28 The Beth Israel Hospital Method and apparatus for angioplasty
US4799479A (en) * 1984-10-24 1989-01-24 The Beth Israel Hospital Association Method and apparatus for angioplasty
US5226430A (en) * 1984-10-24 1993-07-13 The Beth Israel Hospital Method for angioplasty
US4850348A (en) * 1985-01-23 1989-07-25 Pell Donald M Endotracheal tube apparatus and method
US5192278A (en) * 1985-03-22 1993-03-09 Massachusetts Institute Of Technology Multi-fiber plug for a laser catheter
US5496305A (en) * 1985-03-22 1996-03-05 Massachusetts Institue Of Technology Catheter for laser angiosurgery
US5318024A (en) * 1985-03-22 1994-06-07 Massachusetts Institute Of Technology Laser endoscope for spectroscopic imaging
US5304173A (en) * 1985-03-22 1994-04-19 Massachusetts Institute Of Technology Spectral diagonostic and treatment system
US5125404A (en) * 1985-03-22 1992-06-30 Massachusetts Institute Of Technology Apparatus and method for obtaining spectrally resolved spatial images of tissue
US5290275A (en) * 1985-03-22 1994-03-01 Massachusetts Institute Of Technology Catheter for laser angiosurgery
US4718417A (en) * 1985-03-22 1988-01-12 Massachusetts Institute Of Technology Visible fluorescence spectral diagnostic for laser angiosurgery
US5199431A (en) * 1985-03-22 1993-04-06 Massachusetts Institute Of Technology Optical needle for spectroscopic diagnosis
US4913142A (en) * 1985-03-22 1990-04-03 Massachusetts Institute Of Technology Catheter for laser angiosurgery
US5104392A (en) * 1985-03-22 1992-04-14 Massachusetts Institute Of Technology Laser spectro-optic imaging for diagnosis and treatment of diseased tissue
EP0238170A2 (en) * 1986-01-22 1987-09-23 Daniel A. Goor Method and apparatus for detecting myocardial ischemia
EP0238170A3 (en) * 1986-01-22 1988-02-10 Daniel A. Goor Method and apparatus for detecting myocardial ischemia
US5006314A (en) * 1986-04-18 1991-04-09 Minnesota Mining And Manufacturing Company Sensor and method for sensing the concentration of a component in a medium
US4867919A (en) * 1986-10-10 1989-09-19 Minnesota Mining And Manufacturing Company Method of making a gas sensor
US4824789A (en) * 1986-10-10 1989-04-25 Cardiovascular Devices, Inc. Gas sensor
US5120510A (en) * 1986-10-10 1992-06-09 Minnesota Mining And Manufacturing Company Sensor and method for sensing the concentration of a component in a medium
US5836951A (en) * 1986-12-09 1998-11-17 Boston Scientific Corporation Balloon dilation catheter
US4989606A (en) * 1987-01-30 1991-02-05 Minnesota Mining And Manufactoring Company Intravascular blood gas sensing system
EP0479341A2 (en) * 1987-01-30 1992-04-08 Minnesota Mining And Manufacturing Company Intravascular blood parameter measurement system
US5048525A (en) * 1987-01-30 1991-09-17 Minnesota Mining And Manufacturing Company Blood parameter measurement system with compliant element
US5462052A (en) * 1987-01-30 1995-10-31 Minnesota Mining And Manufacturing Co. Apparatus and method for use in measuring a compositional parameter of blood
EP0536808A1 (en) * 1987-01-30 1993-04-14 Minnesota Mining And Manufacturing Company Intravascular blood parameter measurement system
US4951669A (en) * 1987-01-30 1990-08-28 Minnesota Mining And Manufacturing Company Blood parameter measurement system
US4928694A (en) * 1987-01-30 1990-05-29 Minnesota Mining And Manufacturing Company Intravascular blood parameter measurement system
US4830013A (en) * 1987-01-30 1989-05-16 Minnesota Mining And Manufacturing Co. Intravascular blood parameter measurement system
EP0479341A3 (en) * 1987-01-30 1992-05-13 Minnesota Mining And Manufacturing Company Intravascular blood parameter measurement system
US4934369A (en) * 1987-01-30 1990-06-19 Minnesota Mining And Manufacturing Company Intravascular blood parameter measurement system
US4793359A (en) * 1987-04-24 1988-12-27 Gv Medical, Inc. Centering balloon structure for transluminal angioplasty catheter
US5090959A (en) * 1987-04-30 1992-02-25 Advanced Cardiovascular Systems, Inc. Imaging balloon dilatation catheter
US4878898A (en) * 1987-08-17 1989-11-07 Nova Medical Specialties Thermodilution and pressure transducer balloon catheter
US5201317A (en) * 1988-06-06 1993-04-13 Sumitomo Electric Industries, Ltd. Diagnostic and therapeutic catheter
US5116317A (en) * 1988-06-16 1992-05-26 Optimed Technologies, Inc. Angioplasty catheter with integral fiber optic assembly
US5596987A (en) * 1988-11-02 1997-01-28 Noninvasive Technology, Inc. Optical coupler for in vivo examination of biological tissue
US5779631A (en) * 1988-11-02 1998-07-14 Non-Invasive Technology, Inc. Spectrophotometer for measuring the metabolic condition of a subject
US5167230A (en) * 1988-11-02 1992-12-01 Nim, Inc. User-wearable hemoglobinometer for measuring the metabolic condition of a subject
US6134460A (en) * 1988-11-02 2000-10-17 Non-Invasive Technology, Inc. Spectrophotometers with catheters for measuring internal tissue
US6708048B1 (en) 1989-02-06 2004-03-16 Non-Invasive Technology, Inc. Phase modulation spectrophotometric apparatus
EP0437121A3 (en) * 1989-12-13 1991-11-06 Jean-Marie Lefebvre Filter-catheter combination
EP0437121A2 (en) * 1989-12-13 1991-07-17 LEFEBVRE, Jean-Marie Filter-catheter combination
US5345932A (en) * 1990-02-09 1994-09-13 Minnesota Mining And Manufacturing Company Method and system for monitoring of blood constituents in vivo
US5195963A (en) * 1990-02-09 1993-03-23 Minnesota Mining And Manufacturing Company Method and system for monitoring of blood constituents in vivo
US5175016A (en) * 1990-03-20 1992-12-29 Minnesota Mining And Manufacturing Company Method for making gas sensing element
US5284775A (en) * 1990-03-20 1994-02-08 Minnesota Mining And Manufacturing Company Gas sensing element and method for making same
US5285778A (en) * 1991-04-19 1994-02-15 Mackin Robert A Endotracheal tube wih fibers optic illumination and viewing and auxiliary tube
US6549795B1 (en) 1991-05-16 2003-04-15 Non-Invasive Technology, Inc. Spectrophotometer for tissue examination
US5284138A (en) * 1991-07-09 1994-02-08 C. R. Bard, Inc. Apparatus and method for positioning a sensor away from the blood vessel wall
US5309894A (en) * 1991-08-03 1994-05-10 Richard Wolf Gmbh Endoscope for introduction into a hollow organ of a living thing
US5351693A (en) * 1991-11-08 1994-10-04 Baxter International Inc. Ultrasound probe for use with transport catheter and method of making same
EP0542246A1 (en) * 1991-11-13 1993-05-19 Becton Dickinson and Company Catheter
US5280786A (en) * 1992-01-21 1994-01-25 Fiberoptic Sensor Technologies, Inc. Fiberoptic blood pressure and oxygenation sensor
US6071263A (en) * 1992-03-02 2000-06-06 Kirkman; Thomas R. Apparatus and method for retaining a catheter in a blood vessel in a fixed position
US6558349B1 (en) 1992-03-02 2003-05-06 Thomas R. Kirkman Apparatus and method for retaining a catheter in a blood vessel in a fixed position
US5509900A (en) * 1992-03-02 1996-04-23 Kirkman; Thomas R. Apparatus and method for retaining a catheter in a blood vessel in a fixed position
WO1993017747A1 (en) * 1992-03-02 1993-09-16 Kirkman Thomas R Apparatus and method for retaining a catheter in a blood vessel in a fixed position
US5295960A (en) * 1992-04-01 1994-03-22 Applied Medical Resources Corporation Catheter with interior balloon
US20050113656A1 (en) * 1992-05-18 2005-05-26 Britton Chance Hemoglobinometers and the like for measuring the metabolic condition of a subject
US6785568B2 (en) 1992-05-18 2004-08-31 Non-Invasive Technology Inc. Transcranial examination of the brain
US5333609A (en) * 1992-05-19 1994-08-02 Minnesota Mining And Manufacturing Company Catheter and probe-catheter assembly
US20080161697A1 (en) * 1992-06-17 2008-07-03 Britton Chance Examination of subjects using photon migration with high directionality techniques
US5421328A (en) * 1992-06-29 1995-06-06 Minnesota Mining And Manufacturing Company Intravascular blood parameter sensing system
US5335658A (en) * 1992-06-29 1994-08-09 Minnesota Mining And Manufacturing Company Intravascular blood parameter sensing system
US5282464A (en) * 1992-07-21 1994-02-01 Brain Archibald Ian Jeremy Combined laryngeal mask and reflectance oximeter
US5402768A (en) * 1992-09-01 1995-04-04 Adair; Edwin L. Endoscope with reusable core and disposable sheath with passageways
US5538512A (en) * 1993-02-25 1996-07-23 Zenzon; Wendy J. Lubricious flow directed catheter
US5336205A (en) * 1993-02-25 1994-08-09 Target Therapeutics, Inc. Flow directed catheter
US5454807A (en) * 1993-05-14 1995-10-03 Boston Scientific Corporation Medical treatment of deeply seated tissue using optical radiation
US5817015A (en) * 1993-06-22 1998-10-06 Adair; Edwin L. Endoscope with reusable core and disposable sheath with passageways
US5466234A (en) * 1994-01-31 1995-11-14 Trimedyne, Inc. Expandable laser catheter
US6618614B1 (en) 1995-01-03 2003-09-09 Non-Invasive Technology, Inc. Optical examination device, system and method
US5987351A (en) * 1995-01-03 1999-11-16 Non-Invasive Technology, Inc. Optical coupler for in vivo examination of biological tissue
US5947939A (en) * 1995-06-01 1999-09-07 Scimed Life Systems, Inc. Flow assisted catheter
US5730733A (en) * 1995-06-01 1998-03-24 Scimed Life Systems, Inc. Flow assisted catheter
US5954053A (en) * 1995-06-06 1999-09-21 Non-Invasive Technology, Inc. Detection of brain hematoma
US6763261B2 (en) 1995-09-20 2004-07-13 Board Of Regents, The University Of Texas System Method and apparatus for detecting vulnerable atherosclerotic plaque
WO1997010748A1 (en) 1995-09-20 1997-03-27 Texas Heart Institute Detecting thermal discrepancies in vessel walls
US5935075A (en) * 1995-09-20 1999-08-10 Texas Heart Institute Detecting thermal discrepancies in vessel walls
US6475159B1 (en) 1995-09-20 2002-11-05 S. Ward Casscells Method of detecting vulnerable atherosclerotic plaque
US6615071B1 (en) 1995-09-20 2003-09-02 Board Of Regents, The University Of Texas System Method and apparatus for detecting vulnerable atherosclerotic plaque
US6993382B2 (en) 1995-09-20 2006-01-31 Board Of Regents The University Of Texas System Method of detecting vulnerable atherosclerotic plaque
US20060094980A1 (en) * 1995-09-20 2006-05-04 Casscells S W Detecting thermal discrepancies in vessel walls
US7513876B2 (en) 1995-09-20 2009-04-07 Board Of Regents, The University Of Texas System Detecting thermal discrepancies in vessel walls
US20030004430A1 (en) * 1995-09-20 2003-01-02 Casscells S. Ward Detecting thermal discrepancies in vessel walls
US6022309A (en) * 1996-04-24 2000-02-08 The Regents Of The University Of California Opto-acoustic thrombolysis
US20020045890A1 (en) * 1996-04-24 2002-04-18 The Regents Of The University O F California Opto-acoustic thrombolysis
US5899892A (en) * 1996-05-31 1999-05-04 Scimed Life Systems, Inc. Catheter having distal fiber braid
US5961511A (en) * 1996-05-31 1999-10-05 Scimed Life Systems, Inc. Catheter having LCP reinforced distal portion
US20050043596A1 (en) * 1996-07-12 2005-02-24 Non-Invasive Technology, Inc., A Delaware Corporation Optical examination device, system and method
US20020077564A1 (en) * 1996-07-29 2002-06-20 Farallon Medsystems, Inc. Thermography catheter
US7603166B2 (en) 1996-09-20 2009-10-13 Board Of Regents University Of Texas System Method and apparatus for detection of vulnerable atherosclerotic plaque
US7123968B1 (en) 1996-09-20 2006-10-17 The Board Of Regents Of The University Of Texas System Heat treatment of inflamed tissue
US5915383A (en) * 1997-04-29 1999-06-29 Smiths Industries Public Limited Company Cuffed medico-surgical tubes
US5954050A (en) * 1997-10-20 1999-09-21 Christopher; Kent L. System for monitoring and treating sleep disorders using a transtracheal catheter
US20050021013A1 (en) * 1997-10-21 2005-01-27 Endo Vasix, Inc. Photoacoustic removal of occlusions from blood vessels
US6368318B1 (en) 1998-01-23 2002-04-09 The Regents Of The University Of California Opto-acoustic recanilization delivery system
US20050197583A1 (en) * 1998-02-11 2005-09-08 Britton Chance Detection, imaging and characterization of breast tumors
US7627365B2 (en) 1998-02-11 2009-12-01 Non-Invasive Technology Inc. Detection, imaging and characterization of breast tumors
US20050228291A1 (en) * 1998-02-11 2005-10-13 Britton Chance Imaging and characterization of brain tissue
US7610082B2 (en) 1998-02-11 2009-10-27 Non-Invasive Technology, Inc. Optical system and method for in-vivo transcranial examination of brain tissue of a subject
US20100174160A1 (en) * 1998-02-11 2010-07-08 Britton Chance Detection, imaging and characterization of brain tissue
US20090281402A1 (en) * 1998-02-13 2009-11-12 Britton Chance Transabdominal examination, monitoring and imaging of tissue
US20050038344A1 (en) * 1998-02-13 2005-02-17 Britton Chance Transabdominal examination, monitoring and imaging of tissue
US6306081B1 (en) * 1998-04-21 2001-10-23 Olympus Optical Co., Ltd. Hood for an endoscope
US9730782B2 (en) 1998-08-12 2017-08-15 Maquet Cardiovascular Llc Vessel harvester
US20150164632A1 (en) * 1998-08-12 2015-06-18 Maquet Cardiovascular Llc Vessel harvester
US9700398B2 (en) * 1998-08-12 2017-07-11 Maquet Cardiovascular Llc Vessel harvester
GB2328879A (en) * 1998-09-19 1999-03-10 Amer Shaikh A nasally or orally intubated device with cuff
GB2328879B (en) * 1998-09-19 1999-07-21 Amer Shaikh An intubation device
US6722368B1 (en) 1998-09-19 2004-04-20 Intavent Orthofix Limited Intubation device
US6193705B1 (en) 1998-10-28 2001-02-27 Scimed Life Systems, Inc. Flow assisted catheter
US20030171691A1 (en) * 1999-06-25 2003-09-11 Casscells S. Ward Method and apparatus for detecting vulnerable atherosclerotic plaque
US7426409B2 (en) 1999-06-25 2008-09-16 Board Of Regents, The University Of Texas System Method and apparatus for detecting vulnerable atherosclerotic plaque
US7186259B2 (en) 1999-07-02 2007-03-06 Pulmonx Methods, systems, and kits for lung volume reduction
US7141046B2 (en) 1999-07-02 2006-11-28 Pulmonx Methods, systems, and kits for lung volume reduction
US20050015106A1 (en) * 1999-07-02 2005-01-20 Pulmonx Methods, systems, and kits for lung volume reduction
US6709401B2 (en) 1999-07-02 2004-03-23 Pulmonx Methods, systems, and kits for lung volume reduction
WO2001002042A1 (en) 1999-07-02 2001-01-11 Pulmonx Methods, systems, and kits for lung volume reduction
US20020062120A1 (en) * 1999-07-02 2002-05-23 Pulmonx Methods, systems, and kits for lung volume reduction
US8177769B2 (en) 1999-07-02 2012-05-15 Pulmonx Corporation Methods, systems, and kits for lung volume reduction
US7766895B2 (en) 1999-07-02 2010-08-03 Pulmonx Corporation Methods, systems, and kits for lung volume reduction
US20100280538A1 (en) * 1999-07-02 2010-11-04 Pulmonx Corporation Methods, systems, and kits for lung volume reduction
US20040158228A1 (en) * 1999-07-02 2004-08-12 Pulmonx Methods, systems, and kits for lung volume reduction
US7458963B2 (en) 1999-07-02 2008-12-02 Pulmonx Methods, systems, and kits for lung volume reduction
US20050203483A1 (en) * 1999-07-02 2005-09-15 Pulmonx Methods, systems, and kits for lung volume reduction
US6878141B1 (en) 1999-07-02 2005-04-12 Pulmonx Methods systems and kits for lung volume reduction
US6287290B1 (en) 1999-07-02 2001-09-11 Pulmonx Methods, systems, and kits for lung volume reduction
US20110230738A1 (en) * 1999-08-26 2011-09-22 Britton Chance Optical examination of biological tissue using non-contact irradiation and detection
US7904139B2 (en) 1999-08-26 2011-03-08 Non-Invasive Technology Inc. Optical examination of biological tissue using non-contact irradiation and detection
US20050267409A1 (en) * 2000-01-19 2005-12-01 Boris Shkolnik Inflatable balloon catheter seal and method
US6982024B2 (en) 2000-01-19 2006-01-03 Boris Shkolnik Inflatable balloon catheter seal and method
US20030191435A1 (en) * 2000-01-19 2003-10-09 Boris Shkolnik Inflatable balloon catheter seal and method
US6994687B1 (en) 2000-01-19 2006-02-07 Cordis Neurovascular, Inc. Inflatable balloon catheter with purge mechanism and method
US7160266B2 (en) 2000-01-19 2007-01-09 Cordis Neurovascular, Inc. Inflatable balloon catheter with purge mechanism and method
EP1121955A2 (en) 2000-01-19 2001-08-08 Cordis Neurovascular, Inc. Inflatable balloon catheter seal and method
US7179345B2 (en) 2000-01-19 2007-02-20 Cordis Neurovascular, Inc. Inflatable balloon catheter seal and method
US6723113B1 (en) 2000-01-19 2004-04-20 Cordis Neurovascular, Inc. Inflatable balloon catheter seal and method
US20030114914A1 (en) * 2000-09-27 2003-06-19 Cheng E. Tina Two stage light curable stent and delivery system
US6869442B2 (en) 2000-09-27 2005-03-22 Advanced Cardiovascular Systems, Inc. Two stage light curable stent and delivery system
US6485512B1 (en) 2000-09-27 2002-11-26 Advanced Cardiovascular Systems, Inc. Two-stage light curable stent and delivery system
WO2002094087A1 (en) * 2000-10-27 2002-11-28 Pulmonx Sheath and method for reconfiguring lung viewing scope
US6997918B2 (en) 2000-10-27 2006-02-14 Pulmonx Methods and devices for obstructing and aspirating lung tissue segments
US20040073191A1 (en) * 2000-10-27 2004-04-15 Pulmonx Methods and devices for obstructing and aspirating lung tissue segments
US6585639B1 (en) 2000-10-27 2003-07-01 Pulmonx Sheath and method for reconfiguring lung viewing scope
US6694181B2 (en) 2001-02-12 2004-02-17 Scimed Life Systems, Inc. Methods and devices for detecting vulnerable plaque
US6514214B2 (en) 2001-02-13 2003-02-04 Scimed Life Systems, Inc. Intravascular temperature sensor
US8454527B2 (en) 2001-09-10 2013-06-04 Pulmonx Corporation Minimally invasive determination of collateral ventilation in lungs
US20110087122A1 (en) * 2001-09-10 2011-04-14 Pulmonx Corporation Minimally invasive determination of collateral ventilation in lungs
US7883471B2 (en) 2001-09-10 2011-02-08 Pulmonx Corporation Minimally invasive determination of collateral ventilation in lungs
US20080200797A1 (en) * 2001-09-10 2008-08-21 Pulmonx Method and apparatus for endobronchial diagnosis
US20030051733A1 (en) * 2001-09-10 2003-03-20 Pulmonx Method and apparatus for endobronchial diagnosis
US8979793B2 (en) 2002-01-24 2015-03-17 Lawrence Hofmann Methods and devices for percutaneous and surgical interventions
US20050228402A1 (en) * 2002-01-24 2005-10-13 Lawrence Hofmann Methods and devices for percutaneous and surgical interventions
US9782562B2 (en) 2002-04-04 2017-10-10 Angiodynamics, Inc. Venous insufficiency treatment method
US20040073132A1 (en) * 2002-05-07 2004-04-15 Tracy Maahs Systems and methods for detecting vulnerable plaque
US20090062660A1 (en) * 2002-07-10 2009-03-05 Britton Chance Examination and imaging of brain cognitive functions
US20110172509A1 (en) * 2002-07-10 2011-07-14 Britton Chance Examination of biological tissue using non-contact optical probes
US7983741B2 (en) 2002-07-10 2011-07-19 Non-Invasive Technology Inc. Examination and imaging of brain cognitive functions
US8761866B2 (en) 2002-07-10 2014-06-24 Non-Invasive Technology Inc. Examination and imaging of brain cognitive functions
US8864755B2 (en) 2002-07-10 2014-10-21 Angiodynamics, Inc. Device and method for endovascular treatment for causing closure of a blood vessel
US8864754B2 (en) 2002-07-10 2014-10-21 Angiodynamics, Inc. Device and method for endovascular treatment for causing closure of a blood vessel
US20080188843A1 (en) * 2002-07-10 2008-08-07 Appling William M Device and method for endovascular treatment for causing closure of a blood vessel
US20060217685A1 (en) * 2003-02-07 2006-09-28 Alfred E. Mann Institute For Biomedical Engineering Surgical Drain with Sensors for Monitoring Internal Tissue Condition
US20060217684A1 (en) * 2003-02-07 2006-09-28 Alfred E. Mann Institute For Biomedical Engineering Surgical Drain with Sensors for Monitoring Internal Tissue Condition
US7419483B2 (en) 2003-02-07 2008-09-02 Alfred E. Mann Institute For Biomedical Engineering At The University Of Southern California Surgical drain with positioning and protective features
US20040230179A1 (en) * 2003-02-07 2004-11-18 Alfred E. Mann Institute For Biomedical Engineering Surgical drain with sensors for monitoring fluid lumen
US20040230132A1 (en) * 2003-02-07 2004-11-18 Alfred E. Mann Institute For Biomedical Engineering At The Surgical drain with positioning and protective features
US20040230118A1 (en) * 2003-02-07 2004-11-18 Alfred E. Mann Institute For Biomedical Engineering At The University Of Southern Ca Surgical drain with sensors for monitoring internal tissue condition
US20040254432A1 (en) * 2003-02-07 2004-12-16 Alfred E. Mann Institute For Biomedical Engineering At The Univ. Of S. California Surgical drain with sensors for differential monitoring of internal condition
US7241287B2 (en) 2003-02-07 2007-07-10 Alfred E. Mann Institute For Biomedical Engineering At The University Of Southern California Implanted surgical drain with drain holes for monitoring internal tissue condition
US7267671B2 (en) * 2003-02-07 2007-09-11 Alfred E. Mann Institute For Biomedical Research At The University Of Southern California Surgical drain with sensors for monitoring fluid lumen
US7322971B2 (en) 2003-02-07 2008-01-29 Alfred E. Mann Institute For Biomedical Engineering At The University Of Southern California Surgical drain with sensors for monitoring internal tissue condition by transmittance
US7264616B2 (en) 2003-02-07 2007-09-04 Alfred E. Mann Institute For Biomedical Engineering At The University Of Southern California Method of utilizing a surgical drain with sensors for monitoring internal tissue condition
US7252659B2 (en) 2003-02-07 2007-08-07 Alfred E. Mann Institute For Biomedical Engineering At The University Of Southern California Implanted surgical drain with sensing and transmitting elements for monitoring internal tissue condition
WO2004071279A3 (en) * 2003-02-07 2006-07-27 Alfred E Mann Inst Biomed Eng Surgical drain with sensors for tissue monitoring
US7244251B2 (en) * 2003-02-07 2007-07-17 Alfred E. Mann Institute For Biomedical Engineering Implanted surgical drain with multiple sensing elements for monitoring internal tissue condition
US20100163159A1 (en) * 2003-04-14 2010-07-01 Cook Incorporated Large diameter delivery catheter/sheath
US20040220549A1 (en) * 2003-04-14 2004-11-04 Dittman Jay A. Large diameter delivery catheter/sheath
US7968038B2 (en) 2003-04-14 2011-06-28 Cook Medical Technologies Llc Large diameter delivery catheter/sheath
US7704245B2 (en) 2003-04-14 2010-04-27 Cook Incorporated Large diameter delivery catheter/sheath
US20050090802A1 (en) * 2003-04-28 2005-04-28 Connors John J.Iii Flexible sheath with varying durometer
US20050228452A1 (en) * 2004-02-11 2005-10-13 Mourlas Nicholas J Steerable catheters and methods for using them
US20100175693A1 (en) * 2004-11-16 2010-07-15 Pulmonx Corporation Pulmonary occlusal stent delivery catheter, loading system and methods of use
WO2006055692A2 (en) 2004-11-16 2006-05-26 Pulmonx Pulmonary occlusal stent delivery catheter, loading system and methods of use
WO2006055683A2 (en) 2004-11-16 2006-05-26 Pulmonx Occlusal stent and methods for its use
US9131942B2 (en) 2004-11-16 2015-09-15 Pulmonx Corporation Pulmonary occlusal stent delivery catheter, loading system and methods of use
US20060162731A1 (en) * 2004-11-16 2006-07-27 Pulmonx Pulmonary occlusal stent delivery catheter, loading system and methods of use
US8409168B2 (en) 2004-11-16 2013-04-02 Pulmonx Corporation Pulmonary occlusal stent delivery catheter, loading system and methods of use
US9533116B2 (en) 2005-01-20 2017-01-03 Pulmonx Corporation Methods and devices for passive residual lung volume reduction and functional lung volume expansion
US8496006B2 (en) 2005-01-20 2013-07-30 Pulmonx Corporation Methods and devices for passive residual lung volume reduction and functional lung volume expansion
US20110152678A1 (en) * 2005-01-20 2011-06-23 Pulmonx Corporation Methods and devices for passive residual lung volume reduction and functional lung volume expansion
US8721534B1 (en) * 2005-02-11 2014-05-13 James D. Luecke Speculum assembly
US8876791B2 (en) 2005-02-25 2014-11-04 Pulmonx Corporation Collateral pathway treatment using agent entrained by aspiration flow current
US8055321B2 (en) 2005-03-14 2011-11-08 Peter Bernreuter Tissue oximetry apparatus and method
US20110060200A1 (en) * 2005-03-14 2011-03-10 Peter Bernreuter In vivo blood spectrometry
US9364176B2 (en) 2005-03-14 2016-06-14 Peter Bernreuter Tissue oximetry apparatus and method
US8923942B2 (en) 2005-03-14 2014-12-30 Peter Bernreuter In vivo blood spectrometry
US7865223B1 (en) 2005-03-14 2011-01-04 Peter Bernreuter In vivo blood spectrometry
US20070142742A1 (en) * 2005-07-13 2007-06-21 Pulmonx Methods and systems for segmental lung diagnostics
US8523782B2 (en) 2005-12-07 2013-09-03 Pulmonx Corporation Minimally invasive determination of collateral ventilation in lungs
US20080221582A1 (en) * 2007-03-05 2008-09-11 Pulmonx Pulmonary stent removal device
US8100959B2 (en) 2007-03-09 2012-01-24 Pulmonx Corporation Loading device for a pulmonary implant
US20080221703A1 (en) * 2007-03-09 2008-09-11 Pulmonx Loading a device for a pulmonary implant
US9050094B2 (en) 2007-03-12 2015-06-09 Pulmonx Corporation Methods and devices for passive residual lung volume reduction and functional lung volume expansion
US20100036361A1 (en) * 2008-06-20 2010-02-11 Pulmonx System and method for delivering multiple implants into lung passageways
US9468364B2 (en) 2008-11-14 2016-10-18 Intuitive Surgical Operations, Inc. Intravascular catheter with hood and image processing systems
US8725226B2 (en) 2008-11-14 2014-05-13 Nonin Medical, Inc. Optical sensor path selection
US20100130836A1 (en) * 2008-11-14 2010-05-27 Voyage Medical, Inc. Image processing systems
US9498158B2 (en) 2008-11-14 2016-11-22 Nonin Medical, Inc. Optical sensor path selection
EP2488093A2 (en) * 2009-10-15 2012-08-22 Inventio LLC Disposable and reusable complex shaped see-through endoscope
EP2488093A4 (en) * 2009-10-15 2013-04-03 Inventio Llc Disposable and reusable complex shaped see-through endoscope
US9775496B2 (en) 2009-10-15 2017-10-03 Visualization Balloons, Llc Disposable and reusable complex shaped see-through endoscope
US9833126B2 (en) 2011-04-05 2017-12-05 Visualization Balloons, Llc Balloon access device with features for engaging an endoscope
US9220396B2 (en) 2011-04-05 2015-12-29 Visualization Balloons, Llc Balloon access device for endoscope
US9814513B2 (en) 2011-06-30 2017-11-14 Angiodynamics, Inc. Endovascular plasma treatment device and method of use
DE102011106524A1 (en) * 2011-07-04 2013-01-10 Ching-Yuan Hwang Light guide tube for transmission of light beam, has plastic material which surrounds optical waveguide and forms tubular structure, and comprises light entrance and light exit, so that light exit ends are arranged around light exit
US9451875B2 (en) 2012-12-07 2016-09-27 Cook Medical Technologies Llc Flexible lens
US20160278694A1 (en) * 2015-03-29 2016-09-29 Abraham Aharoni Device for Visual Vein Location

Similar Documents

Publication Publication Date Title
US4456011A (en) Balloon-catheter
US3995617A (en) Heart assist method and catheter
US5046503A (en) Angioplasty autoperfusion catheter flow measurement method and apparatus
US4901734A (en) Dual-thermistor thermodilution catheter
US4692148A (en) Intra-aortic balloon pump apparatus and method of using same
US5766151A (en) Endovascular system for arresting the heart
US4160448A (en) Blood pressure measuring catheter
US4406656A (en) Venous catheter having collapsible multi-lumens
US3674013A (en) Fiberoptic catheter
US5569296A (en) Method for delivering and deploying intraluminal devices
US3565056A (en) Body fluid pressure measuring apparatus
US6251093B1 (en) Methods and apparatus for anchoring an occluding member
US5053023A (en) Catheter for prolonged access
US4961738A (en) Angioplasty catheter with illumination and visualization within angioplasty balloon
US4793359A (en) Centering balloon structure for transluminal angioplasty catheter
US7524302B2 (en) Prenatal balloon catheter
US4901731A (en) Single sensor pressure differential device
US4661094A (en) Perfusion catheter and method
US4077394A (en) Integral pressure sensor probe for a cardiac assistance device
US5329922A (en) Oximetric esophageal probe
US4850969A (en) Retroperfusion catheter and tip construction for use therewith
US6517492B2 (en) Method and apparatus for assessment of cardiac function by monitoring movement of the trachea
US4796640A (en) Apparatus with fast response thermistor
US4798588A (en) Central venous pressure catheter and method for using
US20020077564A1 (en) Thermography catheter