Catheter guide means

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434
This subclass is indented under subclass 433.  Subject matter including means for either (a) guiding the catheter while it is being inserted into the body or (b) guiding the catheter after it has been inserted within the body (e.g., means for bending the tip of the catheter after its insertion in the body so that the catheter will enter a selected portion of a branched passageway).

 
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Patent Number
Title
  Date
4257421 Gastro-intestinal tube guide and stiffener Mar-24-1981
A device for use in inserting soft and flexible tubular devices into a body passageways, said device characterized by being formed from a flexible base, such as multiple-strand nylon thread and having deposited upon said flexible base a soluble material such as gelatin, said soluble material characterized...     
4286585 Bend angle control for endoscope Sep-1-1981
An endoscope which comprises a distal end portion containing an observation optical system, a flexible tube, a freely bendable section for connecting the distal end portion to the flexible tube and an optical transmission means for conducting an image picked up by the observation optical system to an...     
4299226 Coronary dilation method Nov-10-1981
A novel coronary dilation method is disclosed wherein a guiding catheter having at least one side arm is continuously flushed with heparinized saline during the dilation process except for momentary interruptions for recording coronary pressures. In accordance with the preferred embodiment method, a...     
4397091 Dispensing container for venus catheters Aug-9-1983
A container for the sterile storage and dispensing of a catheter intended for insertion into a blood vessel is provided with an outlet opening for dispensing the catheter therethrough and has rotatable means for feeding the catheter out through said outlet and indicating means operatively connected to...     
4496347 Feeding tube stylet Jan-29-1985
A stylet to be used in combination with a feeding tube assembly for administration or aspiration of fluids to a patient comprising a wire with an elongated loop of variable length and width at its distal end. The width of the loop may be adjusted so as to be greater than the diameter of any apertures...     
4509945 Catheter for catheterizing central veins Apr-9-1985
A novel catheter with a guide wire, the tip of which is bent in the manner of a walking stick, enables central veins to be rapidly and safely catheterized via a peripheral approach.
4538622 Guide wire for catheters Sep-3-1985
Guide wire comprising an elongate flexible cylindrical element formed of metallic material having high torsional capability and having a proximal portion ranging from 0.008 to 0.020 inches and a distal portion having a diameter of less than 0.007 inches. It also comprises a coil formed of metallic material...     
4543090 Steerable and aimable catheter Sep-24-1985
A catheter and the like is steerable through cavities within a body and aimable toward organs or tissue within the body. The catheter includes an elongated tubular member having a proximal end and a distal end for insertion into the body and a plurality of temperature-activated memory elements in the...     
4580573 Catheter introducer Apr-8-1986
There is disclosed herein a catheter introducer having an axially disposed cylindrical elastic segment which covers first and second substantially solid cylindrical elements each defining internal and external diameters, each of said annular elements, as well as the elastic segment, disposed radially...     
4586923 Curving tip catheter May-6-1986
The curving tip catheter is adapted to be inserted into and through the lumen of a blood vessel in a network of branching blood vessels in a body and is manipulatable therethrough to a desired blood vessel branch within the network of branching blood vessels. The catheter includes an elongate tubular...     
4589410 Endotracheal tube May-20-1986
The present disclosure is directed to an apparatus of the endotracheal type to facilitate rapid intubation of the trachea with an endotracheal tube, with or without a laryngoscope in an operating room or under emergency field conditions where the insert end of an endotracheal tube may be selectively...     
4601705 Steerable and aimable catheter Jul-22-1986
A catheter or the like is steerable through cavities within a body and aimable toward organs or tissue within the body. The catheter includes an elongated tubular member having a proximal end and a distal end for insertion into the body, a plurality of temperature-activated memory elements in the distal...     
4615472 Catheter placement device Oct-7-1986
A slip gripping device for use with an elongated cylindrical member to selectively move that member to any desired longitudinal or rotational position. The device comprises a collet-like member including a plurality of fingers, each of which includes a gripping element at the free end thereof. The collet...     
4616652 Dilatation catheter positioning apparatus Oct-14-1986
An insertion guide for a balloon catheter. The insertion guide includes an outer guide tube that defines a passage having an inside diameter sufficient to receive the balloon catheter therethrough. Telescopically receivable within the guide tube is an introducer which defines a lumen centrally thereof....     
4636200 Intubating device Jan-13-1987
This invention relates to a new and improved intubating device and more particularly to an intubating device wherein it can be determined that the metal stylet is properly positioned by the aspiration process without removal and subsequent reinsertion of the metal stylet. The intubating device consists...     
4643720 Drainage catheter Feb-17-1987
The invention features an improved catheter design with a rotatable member attached to the proximal end of a catheter. The rotatable member can lock a flexible tension member, passing through the catheter, in place and thereby prevent both inadvertant removal of the catheter and wicking to the outside...     
4659328 Stylet Apr-21-1987
A stylet 2 for stiffening a pliable infusion tube 38 comprising a wire 4 extending between a proximal and a distal end, a coiled spring 22 providing a flexible tip to the distal end of the stylet 2 for more easily feeding the stylet 2 through a convoluted infusion tube 38, a reduced diameter portion...     
4676249 Multi-mode guidewire Jun-30-1987
The multi-mode guidewire selectively allows the creation of varying degrees of flexibility at varying locations of the guidewire. An elongate coiled wire body of the guidewire is capable of assuming an arcuate shape adjacent to its capped distal end. The coiled wire body may be made less flexible by...     
4682607 Wire guide Jul-28-1987
The wire guide is formed of a flexible stranded wire having a coating extending from the proximal end to rigidify the wire from the proximal end to an intermediate point. The wire remains flexible from the intermediate point to the distal end and a nose is fused to the distal end to prevent fraying of...     
4687470 Catheter for nasogastric intubation Aug-18-1987
The present invention provides an intubation assembly for nasogastric intubation comprising a catheter and a plastic sheath tube for encasing the catheter along substantially the full length thereof, the sheath tube having a longitudinal tear-off line over the full length thereof and having elasticity...     
4713058 Guiding mandrin for drainage ducts Dec-15-1987
Guiding mandrin for drainage ducts featuring a wedge that by being pushed in or pulled out of the split tip of the mandrin tube will cause said tip to increase or reduce its diameter according to requirement. Hereby, a firm contact between guiding mandrin and drainage duct can be established which will...     
4723936 Steerable catheter Feb-9-1988
This invention relates to steerable catheters. More particularly, this invention relates to steerable catheters comprising a flexible catheter comprising a spring coil body defining a lumen, the spring coil body having a flexible covering thereon; a deflection wire, the distal end of the deflection wire...     
4724846 Catheter guide wire assembly Feb-16-1988
A catheter guide wire assembly for use in angioplasty. The assembly has a combined core and safety wire extending longitudinally between its proximal and distal ends. A wound wire is positioned around the combined core and safety wire and follows the contour thereof. The combined core and safety wire...     
4740195 Drainage catheter Apr-26-1988
A medical device of improved design includes an elongated member for insertion into the body, a flexible tension member extending along the elongated member to an attachment upon which tension is desired to be applied, and locking means associated with the elongated member at a point outside of the body...     
4757827 Steerable guidewire with deflectable tip Jul-19-1988
The present invention is directed to a steerable guidewire. More specifically, the invention is directed to a guidewire which comprises flexible tubing having proximal and distal ends and inner and outer surfaces, a helically wound flexible spring coil having proximal and distal ends, the proximal end...     
4758222 Steerable and aimable catheter Jul-19-1988
A catheter or the like is steerable through cavities within a body and aimable toward organ or tissue within the body. The catheter includes an elongated tubular member having a distal end for insertion into the body and a temperature-activated memory element in the distal end of the hollow tubular member....     
4763647 Dual coil steerable guidewire Aug-16-1988
A steerable guidewire has an elongate main wire having a tapered distal portion and a helical coil mounted about the distal portion. The distal end of the coil extends beyond the distal tip of the tapered distal portion of the main wire. An inner helical coil is disposed within the outer coil is secured...     
4787399 Remote controlled catheter guide Nov-29-1988
The invention relates to a remote controlled catheter guide provided with a micro-balloon which comprises a head formed of a coil spring (4) mounted at the end (2) of a tube (1). When pulling on a flexible traction member (7) fastened to an eccentric point inside the end of the head, this head can be...     
4787884 Ureteral stent guidewire system Nov-29-1988
A dual wire guidewire system for inserting a ureteral stent with a proximal end with a reduced opening into the ureter of a patient comprises an elongated tubular pusher wire, an elongated guidewire and a retaining member. The pusher wire is open at both ends and sized to fit in the lumen of the stent....     
4790809 Ureteral stent Dec-13-1988
An ureteral stent comprises an elongated, flexible tubular member which has one end with a magnetically attractable tip. Both ends of the stent are preferably both set in the form of hooks. A method of removing the stent from the bladder of a patient comprises introducing a retrieving catheter with a...     
4796642 Pacing lead stylet Jan-10-1989
The pacing lead stylet includes a proximal end, a stylet wire, a decreasing taper, a flat, an increasing taper and a tip. The decreasing taper is connected to the stylet wire and extends in a distal direction away from the wire distal end for a decreasing taper distance. The decreasing taper has a decreasing...     
4798593 Stiffening of probes Jan-17-1989
A guide for the stiffening of a probe made of a flexible material is disposed in the probe during insertion of the probe into a body cavity, the guide being removed again after the probe has been inserted into the body cavity, the guide being a wire element provided with a coating of a biocompatible...     
4799496 Guide wire handle Jan-24-1989
A guide wire handle for selectively stiffening a guide wire and releasably locking the guide wire in a stiffened condition that includes a main body that can be held by one hand and has a rectangular opening in which there is mounted a slide member that is movable between a guide wire datum position...     
4800890 Steerable guide wire for catheters Jan-31-1989
In a steerable, flexible, torsionally-stable guide wire for medical catheters which is surrounded at its distal end region by a helically wound spring which protrudes beyond the end of the guide wire, an improved atraumatic guidance of the guide wire within particularly narrow passages is obtained in...     
4808164 Catheter for balloon angioplasty Feb-28-1989
A catheter for balloon angioplasty includes a flexible shaft defining a hollow passage. The shaft has first and second ends. A core is movably and removably mounted in the passage and has first and second ends adjacent the first and second ends of the shaft. The core has a first flexible portion adjacent...     
4811743 Catheter guidewire Mar-14-1989
A catheter guidewire for use in inserting a catheter into a subject. The guidewire includes a center wire core surrounded by a coiled wire sheath that is Teflon coated on an outside surface. The extreme distal end of the rod widens to a sphere. The rod and sheath are pre-bent to a desired form. As the...     
4813434 Steerable guidewire with deflectable tip Mar-21-1989
The present invention is directed to a steerable guidewire. More specifically, the invention is directed to a guidewire which comprises flexible tubing having proximal and distal ends and inner and outer surfaces, a helically wound flexible spring coil having proximal and distal ends, the proximal end...     
4815478 Steerable guidewire with deflectable tip Mar-28-1989
The present invention is directed to a steerable guidewire. More specifically, the invention is directed to a guidewire which comprises flexible tubing having proximal and distal ends and inner and outer surfaces, a helically wound flexible spring coil having proximal and distal ends, the proximal end...     
4827941 Extendable guidewire for cardiovascular procedures May-9-1989
An extendable guidewire system for introducing a dilatation catheter into the cardiovascular system. The guidewire has guidewire and extension sections with a connection therebetween which permits the two sections to be joined together and separated simply by pushing the two sections together and pulling...     
4830023 Medical guidewire May-16-1989
A medical guidewire has an elongated body that has a degree of flexibility and a distal tip region of relatively greater flexibility. The guidewire consists of a core having a body of first diameter, a distal portion of a relatively smaller diameter, and a generally flat distal end. The end is disposed...     
4832047 Guide wire device May-23-1989
A guide wire formed with a distal tapered segment and having a distal-end coil carried over a portion of the tapered segment. The strand forming the helical wrappings of the coil is reduced in thickness in the region of proximal attachment to the wire, to reduce the difference in diameter between the...     
4841976 Steerable catheter guide Jun-27-1989
A steerable catheter guide comprised of an outer tube and an inner member surrounded by and rotatable with respect to said outer tube is disclosed. The steerable catheter guide also includes a formable member bonded to said inner member and said outer tube in the area of their respective distal ends....     
4846186 Flexible guidewire Jul-11-1989
A guidewire suited for inserting both diagnostic and therapeutic catheters. The guidewire has an initial uniform diameter segment that is coated with Telfon along a majority of its length. This core station tapers along a uniform portion to a second constant diameter segment surrounded by a flexible...     
4850983 Stylet wire retainer Jul-25-1989
An enteral feeding tube assembly for the administration of fluids to a patient having a semi-rigid stylet guide wire for assisting in the insertion of the feeding tube into the patient's stomach and having a distal orifice for exit of the fluid from the tube. Means are provided for retaining the stylet...     
4854325 Reciprocating guidewire method Aug-8-1989
Guidewire insertion method and apparatus. A guidewire can be inserted into an obstructed blood vessel. A proximal portion of the guidewire is driven back and forth at high speed by a hand-held drive unit containing a battery, a D.C. motor and a transmission that converts rotating motor output shaft motion...     
4860757 Guidewire advancement system Aug-29-1989
A guidewire advancement system for inserting catheter guidewires into blood vessels, and more particularly a guidewire dispensing system for the controlled sterile insertion of a coiled spring guidewire to avoid infection of the patient. The system provides for the transmission of an electrical signal...     
4867174 Guidewire for medical use Sep-19-1989
A structure comprising: an elongated, flexible inner element and a substantially water insoluble, biocompatible sheath disposed over the inner element, the structure having a substantially uniform cross-section, being substantially solid, and sized and shaped for insertion into the body of a medical...     
4873983 Steerable guidewire for vascular system Oct-17-1989
A guidewire arranged to be transported through the vascular system composed of a helically wound tapered spring, a length of tubing attached to the proximal end of the spring, a wire attached to the inner surface of and extending to the tip of the spring for curving the tip to a desired shape, and a...     
4875489 Extendable guidewire Oct-24-1989
An extendable guidewire for introducing a dilatation catheter into the cardiovascular system. The guidewire has main and auxiliary sections with a connector which permits the two sections to be joined together and separated simply by pushing the two sections together and pulling them apart. One of the...     
4884579 Catheter guide wire Dec-5-1989
A catheter guide wire designed for use in guiding a catheter to a target site along a tortuous vessel path. The guide wire has a relatively long, torqueable proximal wire section, a more flexible intermediate section, and a most flexible distal end section designed to be advanced across sharp-bend vessel...     
4886500 External guide wire Dec-12-1989
A guide wire for insertion into a patient has a tapered distal end and is positioned around the exterior of a trocar for positioning within a patient. The wire has a separation section and two portions. A kit includes the wire and a cannula for emplacement in a patient.
4917094 Guidewire advancement system Apr-17-1990
A guidewire advancement system for inserting catheter guidewires into blood vessels, and more particularly a guidewire dispensing system for the controlled sterile insertion of a coiled spring guidewire to avoid infection of the patient. The system provides for the transmission of an electrical signal...     
4917103 Guide wire extension Apr-17-1990
A guide wire system for use in catheter exchanges avoids the need for a separate exchange wire. Instead of the conventional practice in which the initial guide wire is removed and replaced with a longer exchange wire, a guide wire extension is attached to the proximal end of the initial guide wire thereby...     
4922924 Catheter guidewire with varying radiopacity May-8-1990
A guidewire for use with a catheter has segments of varying radiopacity. The guidewire includes a coil assembly at its distal end, the coil assembly being formed from a highly radiopaque coil and a non-radiopaque coil, arranged in bifilar arrangement to define a moderate radiopacity section in which...     
4928693 Pressure monitor catheter May-29-1990
A blood pressure monitoring catheter for use in a Monorail.TM. intravascular system for measuring the pressure gradient across a stenotic lesion. It comprises an elongated, flexible, plastic, extruded, tubular member having a guidewire port extending through the wall thereof a short distance proximal...     
4932413 Guidewire exchange catheter Jun-12-1990
A catheter for facilitating the exchange of guidewires during the course of a transluminal angioplasty or related procedure which comprises an elongated, flexible, tubular member having at least one lumen running the full length thereof from its proximal end to its distal end and with at least three...     
4934380 Medical guidewire Jun-19-1990
A medical guidewire has an elongated body that has a degree of flexibility and a distal tip region of relatively greater flexibility. The guidewire consists of a core having a body of first diameter, a distal portion of a relatively smaller diameter, and a generally flat distal end. The end is disposed...     
4936312 Body cavity inserting instrument Jun-26-1990
A body cavity inserting instrument for use in an instrument for medical treatment comprises a flexible tubular member, a bending member made of an elastic material and an operating wire, said bending member having its front end fixed to the front end of said operating wire and its rear end fixed to the...     
4940062 Guiding member with deflectable tip Jul-10-1990
The invention is directed to a guiding member for vascular catheters, particularly dilatation catheters for angioplasty procedures having a deflectable tip. The guiding member generally includes an elongated core wire having a tapered distal portion, a coil encasing at least part of the tapered distal...     
4944727 Variable shape guide apparatus Jul-31-1990
A maneuverable distal apparatus includes a temperature-activated memory element moving in a first direction to assume a predetermined shape when heated to a predetermined temperature and control means for selectively heating the memory element so that the memory element is moved in the first direction....     
4947864 Guidewire exchange catheter Aug-14-1990
A catheter for facilitating the exchange of guidewires during the course of a transluminal angioplasty or related procedure which comprises an elongated, flexible, tubular member having at least one lumen running the full length thereof from its proximal end to its distal end and which at least three...     
4960411 Low profile sterrable soft-tip catheter Oct-2-1990
This invention relates to steerable catheters. More particularly, this invention relates to a steerable catheter comprising a flexible catheter member having distal and proximal ends and one or more lumens, the single lumen or one of the lumens being closed at its distal end, the one or more other lumens...     
4988356 Catheter and guidewire exchange system Jan-29-1991
A catheter and guidewire exchange system in which the guideware is contained within a guidewire leumen in the indwelling portion of the catheter and with the guidewire and catheter being separated externally of the patient. The catheter includes a guidewire lumen which is slit longitudinally along the...     
4995878 Method for descending venography Feb-26-1991
A method and the apparatus for retrograde catheterization of the venous tree of the lower extremity by introducing the catheter percutaneously through one of superficial veins of the upper extremity (forearm) of the human body and advancing the catheter in a retrograde fashion between the valve cusps...     
4998919 Thrombectomy apparatus Mar-12-1991
A method and apparatus for thrombectomy with partial dissolving by streptokinase or the like, wherein a catheter set with a sheath having two open lumens extending in parallel over most of the length of the sheath. The lumen are distal-parallel to one another and issue proximally under a finite angular...     
5025799 Steerable memory alloy guide wires Jun-25-1991
A medical guide wire or the like that is comprised in part or entirely of one or more heat activated memory alloys alone or in conjunction with one or more non-heat activated memory materials. The tip or any portion of a guide wire comprised of memory alloy or components thereof can be aimed, deflected...     
5040543 Movable core guidewire Aug-20-1991
A movable core guidewire for use in guiding a catheter to an internal body location includes an elongate, flexible helical coil having a lumen extending longitudinally therethrough for receiving a movable core wire. The movable core wire has a flexible polymeric element extending from the distal end...     
5055101 Variable shape guide apparatus Oct-8-1991
A maneuverable distal apparatus includes a temperature-activated memory element moving in a first direction to assume a predetermined shape when heated to a predetermined temperature and control means for selectively heating the memory element so that the memory element is moved in the first direction....     
5059177 Triple lumen balloon catheter Oct-22-1991
A balloon catheter, preferably of the float-advancement type, defines a balloon carried adjacent the catheter distal end and a first catheter lumen communicating between the balloon at a proximal catheter location. By this invention, second and third, separate catheter lumens extend between proximal...     
5059197 Lesion location device Oct-22-1991
A lesion location device suitable for marking a lesion in breast tissue comprises a wire, of which the first portion which has been bent to form a second portion at an obtuse or acute angle to the first portion, a 180.degree. bend and a third portion which extends adjacent the second portion and continues...     
5063935 Catheter guidewire with varying radiopacity Nov-12-1991
A guidewire for use with a catheter has varying radiopacity at its distal end. The guidewire includes a shaft having an outer helical coil attached to the distal region of the shaft, the coil extending distally beyond the distal end of the shaft and terminating in a tip weld. The outer coil is formed...     
5069217 Steerable guide wire Dec-3-1991
A steerable guide wire for use in a medical procedure, such as coronary angioplasty, which requires positioning a catheter or other device at a remote location within the body by way of the cardiovascular system or other passage way. The guide wire has a solid core wire which runs the entire length....     
5090956 Catheter with memory element-controlled steering Feb-25-1992
A maneuverable distal apparatus includes a temperature-activated memory element moving in a first direction to assume a predetermined shape when heated to a predetermined temperature and control means for selectively heating the memory element so that the memory element is moved in the first direction....     
5095915 Guidewire with flexible distal tip Mar-17-1992
A catheter guidewire composed of a wire core whose distal end section is encased in a polymer sleeve, to increase the column strength of the core. Axially spaced grooves formed in the sleeve increase the flexibility of the core end section. The guidewire is advantageous for use with a small-diameter...     
5109867 Extendable guidewire assembly May-5-1992
An extendable guidewire assembly comprising: a guidewire whose proximal end carries a first axial interlocking member; and extension wire whose distal end carries (i) a second axial interlocking member that is adapted to overlap and axially interlock with the first member and (ii) a retractable sleeve...     
5111829 Steerable highly elongated guidewire May-12-1992
A steerable quidewire of length in excess of the order of about 350 centimeters and sufficient for use for gastro-intestinal procedures includes an elongated body of flexible, kink-resistant material, the body having distal and proximal ends; a flexible distal tip formed of radiopaque material, fixedly...     
5113872 Guidewire extension system with connectors May-19-1992
The guidewire extension system includes an extension guidewire adapted to be releasably but firmly connected to proximal end of an initial guidewire. The extension guidewire has a distal end and a proximal end, and the system further comprises a connecting assembly mounted at the distal end of extension...     
5114414 Low profile steerable catheter May-19-1992
This invention relates to steerable catheters. More particularly, this invention relates to a steerable catheter comprising a flexible catheter member having distal and proximal ends and one or more lumens, the single lumen or one of the lumens being closed at its distal end, the one or more other lumens...     
5117838 Rotating guidewire extension system Jun-2-1992
The guidewire extension system includes an extension guidewire adapted to be releasably but firmly connected to the proximal end of an initial guidewire. The extension guidewire has a distal end and a proximal end, and the system further comprises a connecting assembly which is mounted at the distal...     
5117839 Exchangeable fixed wire catheter Jun-2-1992
An apparatus providing the benefits of a catheter with a fixed guidewire, while retaining the advantages of a catheter with an adjustable, removable, and exchangeable guidewire. The catheter may be designed for use in the urinary tract, cardiovascular system, or other body passages. The guidewire is...     
5120323 Telescoping guide catheter system Jun-9-1992
The guide catheter system for use in the treatment of coronary artery disease includes a first single-lumen catheter of a relatively large internal diameter to pass a second guide catheter therethrough. The first guide catheter comprises an elongated flexible tube having a stainless steel braid embedded...     
5123421 Liquid activated steerable catheter guidewire Jun-23-1992
A steerable device, such as a catheter or a guidewire, adapted for insertion into a patient is provided with a means for controllably varying the curvature at the distal end of the device. The arrangement includes a conduit, at least a portion of which is formed from a material that contracts when contacted...     
5125905 Guidewire straightener Jun-30-1992
A guidewire straightener that is adapted to fit on the end of a protective tube containing a guidewire used for introducing a catheter into a patient's bloodvessel. The guidewire straightener has a flexible end that flexes inwardly to grasp the guidewire when the guidewire is inserted into the end of...     
5129890 Hydrophilically coated flexible wire guide Jul-14-1992
A wire guide comprising an elongate central core and a coil formed of radiopaque material which is positioned substantially concentrically with the elongate central core. The wire guide also comprises a polymer sleeve which encloses the elongated central core. The guide wire further comprises a hydrophilic...     
5143085 Steerable memory alloy guide wires Sep-1-1992
A medical guide wire or the like that is comprised in part or entirely of one or more heat activated memory alloys alone or in conjunction with one or more non-heat activated memory material. The tip or any portion of a guide wire comprised of memory alloy or components thereof can be aimed, deflected...     
5144959 Catheter guidewire with varying radiopacity Sep-8-1992
A guidewire for use with a catheter has varying radiopacity in its distal end. In one embodiment the guidewire includes a shaft having an outer helical coil attached to the distal region of the shaft, the coil extending distally beyond the distal end of the shaft and terminating in a tip weld. A smaller...     
5147317 Low friction varied radiopacity guidewire Sep-15-1992
A guidewire for use in the placement of a catheter includes an elongate flexible core wire and a helical coil wrapped about the core wire. The pitch of the turns of the coil is relatively wide over most of the length of the guidewire with a distal segment having coil turns that are closely adjacent each...     
5159937 Steerable dilatation catheter Nov-3-1992
A guiding member for use as an independent guidewire or as an integral part of a low-profile steerable dilatation catheter. The guiding member has an elongated main hollow tubular member, a tubular extension preferably made of polyimide secured to the distal end of the tubular member, a core member which...     
5160321 Balloon catheters Nov-3-1992
Dilatation catheters for use in administering treatments to relieve stenotic regions within a body lumen are described. In one aspect of the invention, a two wire catheter system, of minimal diameter for treating distal arteries is disclosed, In addition, a number of various dilatation balloon configurations,...     
5167239 Anchorable guidewire Dec-1-1992
An anchorable guidewire for use in various medical applications, said guidewire comprising an elongate guidewire body with at least one inflatable anchoring member or balloon positioned thereon and a deactuatable check valve operative to maintain inflation of the inflatable anchoring member or balloon...     
5176149 Catheter guide support Jan-5-1993
A catheter guide support is provided having a wire with a proximal region, of substantially constant cross-section, a distal tapered region and a flexible protecting sheath which extends at least along the length of the distal region of the wire. The wire is constructed integral with the sheath only...     
5178158 Convertible guidewire-catheter with soft tip Jan-12-1993
A convertible wire for use as a guidewire or a catheter in medical applications. The convertible wire comprises a coil spring structure that extends over a proximal portion and a distal tip portion. The spring pitch at the distal tip portion is greater than the spring pitch at the proximal portion to...     
5186179 Guidewire advancement system Feb-16-1993
A guidewire advancement system for inserting catheter guidewires into blood vessels, and more particularly a guidewire dispensing system for the controlled sterile insertion of a coiled spring guidewire to avoid infection of the patient. The system provides for the transmission of an electrical signal...     
5188621 Extendable guidewire assembly Feb-23-1993
An extendable guidewire assembly comprising: a guidewire having a tapered proximal end; an extension wire having a tapered distal end; and a polymeric tubular sleeve that is fixedly attached about the tapered distal end of the extension wire such that the tapered distal end of the extension wire extends...     
5195535 Detachable guidewire extension Mar-23-1993
A connection system for a guidewire and a guidewire extension includes a manually actuable locking mechanism for locking or unlocking the mated ends of the wires together. One of the mating ends includes a socket. The other mating end includes a wire having a reduced diameter end portion that carries...     
5211183 Steerable memory alloy guide wires May-18-1993
A medical guide wire or the like that is comprised in part or entirely of one or more heat activated memory alloys alone or in conjunction with one or more non-heat activated memory materials. The tip or any portion of a guide wire comprised of memory alloy or components thereof can be aimed, deflected...     
5219332 Rotation tool for medical guidewire Jun-15-1993
A gripping-knob rotation tool for attachment to a medical guidewire as used in angioplasty and other medical procedures. The tool is installed laterally over the guidewire at any desired position along the length of the wire, and is secured thereto by a simple rotational or twisting motion. The tool...     
5228453 Catheter guide wire Jul-20-1993
A catheter guide wire comprising: a flexible, torqueable proximal wire section, a more flexible intermediate section with a flexible polymer tube covering, and a most flexible distal end section. A helical ribbon coil is wrapped about the intermediate core segment between the wire core and the polymer...     
5231989 Steerable cannula Aug-3-1993
A device suitable for insertion into a mammalian body comprises an elongated tube or cannula, an elastic member for bending the cannula, and a straightener preventing the elastic member from bending the cannula. The straightener and elastic member are capable of relative axial movement, so that the straightener...     
5231994 Hose or tubular guide catheter Aug-3-1993
A hose or tubular guide catheter which accommodates and guides a balloon catheter through a portion of the vascular system to a site where the balloon catheter can be employed for the dilatation of coronary arteries. The wall of the catheter, in the region of its anterior end, is set back from the edge...     
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