WO2016073684A1 - Devices, systems and methods for a piloting tip bushing for rotational atherectomy - Google Patents
Devices, systems and methods for a piloting tip bushing for rotational atherectomy Download PDFInfo
- Publication number
- WO2016073684A1 WO2016073684A1 PCT/US2015/059184 US2015059184W WO2016073684A1 WO 2016073684 A1 WO2016073684 A1 WO 2016073684A1 US 2015059184 W US2015059184 W US 2015059184W WO 2016073684 A1 WO2016073684 A1 WO 2016073684A1
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- WO
- WIPO (PCT)
- Prior art keywords
- piloting
- drive shaft
- diameter
- tip
- piloting tip
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3205—Excision instruments
- A61B17/3207—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions
- A61B17/320758—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions with a rotating cutting instrument, e.g. motor driven
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B2017/22094—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for for crossing total occlusions, i.e. piercing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B2017/320004—Surgical cutting instruments abrasive
Definitions
- the invention relates to devices and methods for removing tissue from body passageways, such as removal of atherosclerotic plaque from arteries, utilizing a high-speed rotational atherectomy device.
- Atherosclerosis is characterized by the buildup of fatty deposits (atheromas) in the intimal layer (under the endothelium) of a patient's blood vessels. Very often over time, what initially is deposited as relatively soft, cholesterol-rich atheromatous material hardens into a calcified atherosclerotic plaque. Such atheromas restrict the flow of blood, and therefore often are referred to as stenotic lesions or stenoses, the blocking material being referred to as stenotic material. If left untreated, such stenoses can cause angina, hypertension, myocardial infarction, strokes and the like.
- Rotational atherectomy procedures have become a common technique for removing such stenotic material. Such procedures are used most frequently to initiate the opening of calcified lesions in coronary arteries. Most often the rotational atherectomy procedure is not used alone, but is followed by a balloon angioplasty procedure, which, in turn, is very frequently followed by placement of a stent to assist in maintaining patentcy of the opened artery. For non- calcified lesions, balloon angioplasty most often is used alone to open the artery, and stents often are placed to maintain patentcy of the opened artery.
- a burr covered with an abrasive abrading material such as diamond particles is carried at the distal end of a flexible drive shaft.
- the burr is rotated at high speeds (typically, e.g., in the range of about 150,000-190,000 rpm) while it is advanced across the stenosis.
- high speeds typically, e.g., in the range of about 150,000-190,000 rpm
- the burr is removing stenotic tissue, however, it blocks blood flow.
- the artery will have been opened to a diameter equal to or only slightly larger than the maximum outer diameter of the burr. Frequently more than one size burr must be utilized to open an artery to the desired diameter.
- U.S. Pat. No. 5,314,438 discloses another atherectomy device having a drive shaft with a section of the drive shaft having an enlarged diameter, at least a segment of this enlarged surface being covered with an abrasive material to define an abrasive segment of the drive shaft.
- the abrasive segment When rotated at high speeds, the abrasive segment is capable of removing stenotic tissue from an artery.
- this atherectomy device possesses certain advantages over the Auth device due to its flexibility, it also is capable only of opening an artery to a diameter about equal to the diameter of the enlarged abrading surface of the drive shaft since the device is not eccentric in nature.
- U.S. Pat. No. 6,494,890 discloses a known atherectomy device having a drive shaft with an enlarged eccentric section, wherein at least a segment of this enlarged section is covered with an abrasive material. When rotated at high speeds, the abrasive segment is capable of removing stenotic tissue from an artery.
- the device is capable of opening an artery to a diameter that is larger than the resting diameter of the enlarged eccentric section due, in part, to the orbital rotational motion during high speed operation. Since the enlarged eccentric section comprises drive shaft wires that are not bound together, the enlarged eccentric section of the drive shaft may flex during placement within the stenosis or during high speed operation.
- U.S. Pat No. 5,681 , 336 provides a known eccentric tissue removing burr with a coating of abrasive particles secured to a portion of its outer surface by a suitable binding material.
- This construction is limited, however because, as Clement explains at Col. 3, lines 53- 55, that the asymmetrical burr is rotated at "lower speeds than are used with high speed ablation devices, to compensate for heat or imbalance.” That is, given both the size and mass of the solid burr, it is infeasible to rotate the burr at the high speeds used during atherectomy procedures, i.e., 20,000-200,000 rpm. Essentially, the center of mass offset from the rotational axis of the drive shaft would result in development of significant centrifugal force, exerting too much pressure on the wall of the artery and creating too much heat and excessively large particles.
- the atherectomy device when the device is driven into the lesion, it can screw into the lesion.
- the atherectomy device may be limited to a certain size of lesion or stenosis for treatment because of the diameter of the burr.
- Prior art devices such as U.S. Patent No.
- the present invention overcomes these deficiencies and provides, inter alia, the above-referenced improvements.
- the present system is directed in various methods, devices and systems relating to rotational atherectomy. More specifically, a piloting tip is mounted on a drive shaft, the piloting tip or bushing comprising a shape and structure to facilitate opening pilot holes through difficult occlusions and/or stenosis.
- the high-speed rotational atherectomy device for opening a stenosis in an artery having a given diameter comprises a guide wire having a maximum diameter less than the diameter of the artery; a flexible elongated, rotatable drive shaft advanceable over the guide wire, the drive shaft having a proximal end and a distal end; and a piloting member fixedly attached to the drive shaft proximate a distal end thereof.
- the piloting member has a concentric or eccentric profile.
- a piloting member or piloting tip comprises a proximal section extending distally from a proximal end of the piloting member, the proximal section having a constant diameter; a distal section extending proximally from a distal end of the piloting member having a diameter at the distal end less than a diameter at the proximal end of the piloting member, the diameter increasing proximally from the distal end; and an intermediate section between the proximal section and the distal section, the intermediate section having a generally parabolic profile, wherein the diameter of the piloting member increases from the constant diameter of the proximal section to a maximum point and then decreases distally towards the distal section.
- the piloting tip can be either concentric or eccentric.
- the piloting tip has an inner lumen at least at the proximal section with a diameter greater than the diameter of the drive shaft. In at least one embodiment, the piloting tip has a diameter less than a diameter of the drive shaft.
- a method for opening a stenosis in a blood vessel having a given diameter comprising: providing a guide wire having a maximum diameter less than the diameter of the artery; advancing the guide wire into a blood vessel to a position proximal to the stenosis; providing a flexible elongated, rotatable drive shaft advanceable over a guide wire, the drive shaft having a maximum diameter less than the diameter of the artery; the drive shaft having a rotational axis; the drive shaft having a piloting tip fixedly attached to the drive shaft; advancing the piloting tip into the artery to a position proximal to the stenosis; creating a piloting hole by rotating the drive shaft at a sufficient rotational speed.
- the piloting tip has an orbital path such that the piloting hole has a diameter greater than a maximum diameter of the piloting tip.
- FIG. 1 is a perspective view of a rotational atherectomy device of the invention
- FIG. 2 is a perspective view of an exemplary piloting tip of the invention
- FIG. 3 is a side view of the exemplary piloting tip of FIG. 2;
- FIG. 4 is a view of the exemplary piloting tip of FIGS. 2-3 from a distal end of the tip;
- FIG. 5 is a view of the exemplary piloting tip of FIGS. 2-4 from a proximal end of the tip;
- FIG. 6 is a perspective view of an exemplary piloting tip of the invention.
- FIG. 7 is a side view of the exemplary piloting tip of FIG. 6;
- FIG. 8 is a view of the exemplary piloting tip of FIGS. 6-7 from a distal end of the tip;
- FIG. 9 is a view of the exemplary piloting tip of FIGS. 6-8 from a proximal end of the tip.
- FIG. 10 is a perspective view of another embodiment of a rotational atherectomy device.
- Various embodiments of the present invention comprise a rotational atherectomy system as described generally in US 6,494,890, entitled “ECCENTRIC ROTATIONAL
- 2010/0198239 entitled “MULTI-MATERIAL ABRADING HEAD FOR ATHERECTOMY DEVICES HAVING LATERALLY DISPLACED CENTER OF MASS”; U.S. Pat. Pub. No. 2010/0036402, entitled “ROTATIONAL ATHERECTOMY DEVICE WITH PRE-CURVED DRIVE SHAFT”; U.S. Pat. Pub. No. 2009/0299391, entitled “ECCENTRIC ABRADING AND CUTTING HEAD FOR HIGH-SPEED ROTATIONAL ATHERECTOMY DEVICES”; U.S. Pat. Pub. No.
- FIG. 1 illustrates one embodiment of a rotational atherectomy device according to the present invention.
- the device includes a handle portion 10; an elongated, flexible drive shaft 20 having an eccentric abrading head 28 and a piloting section comprising either a piloting tip or bushing 29 mounted or otherwise disposed on the flexible drive shaft at a point distal to the abrading head 28; and an elongated catheter 13 extending distally from the handle portion 10.
- the drive shaft 20 is constructed from helically coiled wire as is known in the art and the abrading head 28 and the piloting tip or bushing 29 are fixedly attached to the drive shaft 20.
- the drive shaft 20 has an outer surface 24 and an inner surface 22 defining an inner lumen, permitting the drive shaft 20 to be advanced and rotated over a guide wire 15.
- the catheter 13 has a lumen in which most of the length of the drive shaft 20 is disposed, except for the enlarged abrading head 28 and a section of the drive shaft 20 distal to the enlarged abrading head 28.
- a fluid supply line 17 may be provided for introducing a cooling and lubricating solution (typically saline or another biocompatible fluid) into the catheter 13.
- FIG. 10 illustrates another embodiment of a rotational atherectomy device which does not include the abrading head (or abrasive section) 28.
- the embodiment illustrated in FIG. 10 is substantially similar to that described with reference to FIG. 1.
- the handle 10 desirably contains a turbine (or similar rotational drive mechanism) for rotating the drive shaft 20 at high speeds.
- the handle 10 typically may be connected to a power source, such as compressed air delivered through a tube 16.
- a pair of fiber optic cables 25, alternatively a single fiber optic cable may be used, may also be provided for monitoring the speed of rotation of the turbine and drive shaft 20 (details regarding such handles and associated instrumentation are well known in the industry, and are described, e.g., in U.S. Pat. No.
- the handle 10 also desirably includes a control knob 11 for advancing and retracting the turbine and drive shaft 20 with respect to the catheter 13 and the body of the handle.
- the eccentric abrading head 28 comprises an eccentric enlarged section of the drive shaft, or an eccentric solid crown, or an eccentric burr attached to the drive shaft.
- the abrasive section 28 has a center of mass spaced radially from the rotational axis of the drive shaft 20, facilitating the ability of the device to open the stenotic lesion to a diameter substantially larger than the outer diameter of the abrasive section 28. This may be achieved by spacing the geometric center of the abrasive section 28, i.e., the eccentric enlarged diameter section of the drive shaft 20, or the eccentric solid abrading head or crown, or burr attached to the drive shaft 20, away from the rotational axis of the drive shaft 20.
- the center of mass of the abrading head 28 may be radially spaced from the drive shaft's rotational axis by providing an abrading head 28 that comprises a differential combination of materials, wherein one side of at least one of the abrading head 28 comprises a more massive or denser material than the other side, which creates eccentricity as defined herein.
- creation of eccentricity as by differential use of materials within the structure of the abrading head 28, e.g., a center of mass offset from the drive shaft's rotational axis is applicable to any embodiment of the abrading head 28 discussed herein, whether concentric, eccentric solid burr, partially hollow crown or abrading head or an enlarged section of the drive shaft, or the equivalent.
- the drive shaft 20 stimulates orbital motion of the eccentric abrading head 28 to generate a cutting diameter that is greater than a diameter of the abrading head.
- the abrading head 28 may comprise a concentric profile or an eccentric profile.
- the abrading head 28 may achieve orbital motion, generated by a positioning of the center of mass of the abrading head 28 radially offset from the rotational axis of the drive shaft, either by using different densities of materials and/or geometrically moving the center of mass of the abrading head 28 radially away from the drive shaft's center of mass. This "eccentricity" may be achieved in either a concentric or an eccentric geometric profile.
- the abrading head 28 may be an enlarged section of the drive shaft, a burr, or a contoured abrasive element and may comprise diamond coating.
- the abrading head 28 may comprise a center of mass that is on the drive shaft's rotational axis.
- these known abrading heads 28 described above are limited to the minimum size lesions that can be treated because the abrasive features of the abrasive element are of a diameter that is larger than the drive shaft diameter.
- the present device remedies that problem, among others. Further, if known abrasive elements are forced or driven into a lesion, the abrading head 28 may grip and screw/auger into the lesion with a subsequent building and releasing of force that may undesirably affect the lesion or the blood vessel.
- the present invention addresses this problem by opening a pilot hole with a diameter equivalent to the diameter of the flexible drive shaft of the atherectomy system. This allows for the minimum required clearance between the abrading head and the lesion to prevent gripping and screwing into the lesion.
- the piloting tip or bushing 29 may be fixedly attached to the drive shaft 20, either by being mounted directly onto the outer surface of the drive shaft or mounted axially to the drive shaft at a distal end of the drive shaft. Since the piloting tip or bushing 29 is fixedly attached to the drive shaft 20, where the abrading head is also fixedly attached, the piloting tip or bushing 29 will rotate in the same direction and at the same speed as the abrading head 28.
- the piloting tip or bushing 29 may be coupled to the drive shaft 20 with a concentric or eccentric profile abrading head 28 as described with reference to FIG. 1.
- the piloting tip or bushing 29 may be coupled to the drive shaft 20 without the abrading head 28.
- the piloting tip or bushing 29 may be coupled with an abrading head 28 of either a concentric or eccentric geometric profile, wherein the abrading head's center of mass is offset radially from the drive shaft's center of mass.
- the piloting tip or bushing 29 may also be coupled with an abrading head 28 of concentric or eccentric geometric profile, wherein the abrading head's enter of mass is collinear with the drive shaft's center of mass.
- the piloting tip or bushing 29 coupled to the drive shaft 20 with or without the abrading head 28 may also comprise a concentric or eccentric profile. Irrespective of the presence or absence of the abrading head 28, the piloting tip or bushing may also comprise a center of mass that is either collinear with the rotational axis of the drive shaft or that is offset radially from the drive shaft's rotational axis using the same techniques discussed above in connection with the abrasive element. As such, in the absence of the abrading head 28, the piloting tip or bushing 29 so configured will have operational characteristics similar to those described for the abrading head 28.
- the abrading head will act as a counterweight, causing orbital motion of the piloting tip and thereby creating an increased rotational diameter for the abrading head.
- the abrading head and the piloting tip are both eccentric and in still other embodiments, the abrading head and the piloting tip are both concentric.
- the eccentricity and/or the positioning of the center of mass of the piloting tip or bushing 29 may also increase its rotational working diameter.
- the piloting tip or bushing 29 may be spaced apart from the abrading head 28 along the drive shaft 20.
- piloting tip or bushing 29 in at least some embodiments comprises a distalmost tip that is of the same diameter as the drive shaft to facilitate opening of stenosis in preparation for the abrasive element's rotational entry therein.
- the piloting tip or bushing 29 may have profiles as illustrated in FIGS. 2-9.
- the piloting tip or bushing 29 has a proximal end 42, a distal end 44, an outer surface 46, and an inner surface 48 that defines a lumen.
- the inner surface 48 of the piloting tip or bushing 29 mates or is engaged with the outer surface 24 of the drive shaft 20.
- the piloting tip or bushing 29 may be fixedly attached to a distal end of the drive shaft 20, and the lumen defined by the inner surface 48 allows the piloting tip or bushing 29 to be advanced and rotated over a guide wire 15.
- the piloting tip or bushing 29 is fixedly disposed to the outer surface of the drive shaft or fixedly attached to a distal end of the drive shaft 20 such that it rotates simultaneously with the abrading head, rather than separately or selectively rotated.
- the piloting tip or bushing 29 may have a shape with a distal end having a diameter smaller than the proximal end. In some embodiments, the piloting tip increases in diameter from the distal end 44 to the proximal end 42. In some embodiments, the piloting tip has a bulbous profile. In some embodiments, such as the embodiments shown in FIGS.
- the outer diameter of the piloting tip or bushing 29 has a constant diameter in a proximal section extending distally of the proximal end 42; in an intermediate section, the diameter of the piloting tip or bushing 29 increases to a maximum point at a distal end of the intermediate section; and in a distal section, the diameter of the piloting tip or bushing tapers at a constant slope to a diameter at the distal end 44 less than the constant diameter at the proximal end.
- the outer diameter of the piloting tip or bushing 29 has a constant diameter in a proximal section extending distally of the proximal end 42; in an intermediate section, the diameter of the piloting tip or bushing 29 increases to a maximum point at a distal end of the intermediate section; and in a distal section, the outer diameter of the piloting tip or bushing decreases to a diameter at the distal end 44 less than the constant diameter at the proximal end.
- the outer diameter of the piloting tip may decrease to a diameter less than the outer diameter of the drive shaft.
- the piloting tip is symmetrical about a central axis. In other embodiments, the piloting tip is asymmetrical about the central axis, such that the piloting tip has an orbital path, which may or may not be different than the orbital path of the abrading head.
- the piloting tip or bushing 29 may have an abrasive coating disposed on some or all of the outer surface 46 of the piloting tip or bushing 29.
- the abrasive coating may be disposed in discrete areas in a desired pattern.
- the piloting tip or bushing 29 has a cutting feature on the outer surface 46.
- the piloting tip or bushing 29 has an impact feature on the outer surface 46.
- the piloting tip or bushing 29 has a thread-like cutting feature disposed about the outer surface 46.
- the piloting tip or bushing 29 is shaped like an auger drill bit with a helical screw blade.
- the piloting tip or bushing 29 can also be used for creating a piloting lumen through the stenosis or for creating a cavity extending distally from the piloting hole into the stenosis. For instance, in a non-limiting exemplary embodiment, this can be accomplished by continuing to advance the piloting tip or bushing 29 distally through the stenosis after the piloting hole is drilled. The piloting lumen can be thus created by the atherectomy device with or without the abrading head 28.
- the piloting lumen can be created by spacing the abrading head 28 and the piloting tip or bushing 29 apart by a distance approximately equal to a length of the stenosis.
- a diameter of the piloting lumen can be made greater than the maximum outer diameter of the piloting tip or bushing 29 by using a piloting tip or bushing having a center of mass offset radially from a rotational axis, using an eccentric piloting tube or bushing, affixing an element having a mass proximal and/or distal of the piloting tip or bushing so as to induce an eccentric rotational path.
- the abrading head 28 can be used, as described elsewhere, for creating the diameter of the piloting lumen greater than the maximum outer diameter of the piloting tip or bushing 29. Additional embodiments for configuring and/or using the piloting tip or bushing 29 for creating a piloting hole in and/or a piloting lumen through a stenosis, as described herein, will become apparent to a person having ordinary skill in the art. All such embodiments are considered as being within the metes and bounds of the instant disclosure as claimed.
- a method for opening a stenosis in a blood vessel having a given diameter comprising: providing a guide wire having a maximum diameter less than the diameter of the artery; advancing the guide wire into a blood vessel to a position proximal to the stenosis;
- a flexible elongated, rotatable drive shaft advanceable over a guide wire the guide wire having a maximum diameter less than the diameter of the artery;
- the drive shaft having a rotational axis;
- the drive shaft having at least one eccentric abrading head and a piloting tip fixedly attached to the drive shaft; advancing the piloting tip into the artery to a position proximal to the stenosis; creating a piloting hole by rotating the drive shaft at a sufficient rotational speed; advancing the eccentric abrading head through the piloting hole, rotating the drive shaft at the rotational speed, and moving the across the stenotic lesion, thereby opening the stenotic lesion to a diameter larger than the nominal diameter of the eccentric enlarged diameter section.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP15857366.7A EP3215031A4 (en) | 2014-11-07 | 2015-11-05 | Devices, systems and methods for a piloting tip bushing for rotational atherectomy |
AU2015343028A AU2015343028A1 (en) | 2014-11-07 | 2015-11-05 | Devices, systems and methods for a piloting tip bushing for rotational atherectomy |
CA2961926A CA2961926A1 (en) | 2014-11-07 | 2015-11-05 | Devices, systems and methods for a piloting tip bushing for rotational atherectomy |
JP2017523997A JP2017533760A (en) | 2014-11-07 | 2015-11-05 | Apparatus, system and method for guided tip bushing for rotational atherectomy |
CN201580060182.4A CN107072679A (en) | 2014-11-07 | 2015-11-05 | The apparatus, system and method for the sophisticated sleeve pipe of guiding for rotary-cut |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/535,915 US20150142028A1 (en) | 2013-03-14 | 2014-11-07 | Devices, systems and methods for a piloting tip bushing for rotational atherectomy |
US14/535,915 | 2014-11-07 |
Publications (1)
Publication Number | Publication Date |
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WO2016073684A1 true WO2016073684A1 (en) | 2016-05-12 |
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ID=55909790
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/US2015/059184 WO2016073684A1 (en) | 2014-11-07 | 2015-11-05 | Devices, systems and methods for a piloting tip bushing for rotational atherectomy |
Country Status (6)
Country | Link |
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EP (1) | EP3215031A4 (en) |
JP (1) | JP2017533760A (en) |
CN (1) | CN107072679A (en) |
AU (1) | AU2015343028A1 (en) |
CA (1) | CA2961926A1 (en) |
WO (1) | WO2016073684A1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20010004700A1 (en) * | 1998-04-10 | 2001-06-21 | Honeycutt John S. | Rotational atherectomy device |
US20090018565A1 (en) * | 2006-06-30 | 2009-01-15 | Artheromed, Inc. | Atherectomy devices, systems, and methods |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6156046A (en) * | 1997-11-07 | 2000-12-05 | Prolifix Medical, Inc. | Methods and systems for treating obstructions in a body lumen |
US8348965B2 (en) * | 2007-10-23 | 2013-01-08 | Cardiovascular Systems, Inc. | Rotational atherectomy device with counterweighting |
US9055966B2 (en) * | 2008-05-30 | 2015-06-16 | Cardiovascular Systems, Inc. | Eccentric abrading and cutting head for high-speed rotational atherectomy devices |
US20090306690A1 (en) * | 2008-06-05 | 2009-12-10 | Cardiovascular Systems, Inc. | Abrasive nose cone with expandable cutting and sanding region for rotational atherectomy device |
US20140316447A1 (en) * | 2013-03-14 | 2014-10-23 | Cardiovascular Systems, Inc. | Devices, systems and methods for a piloting tip bushing for rotational atherectomy |
-
2015
- 2015-11-05 JP JP2017523997A patent/JP2017533760A/en active Pending
- 2015-11-05 CN CN201580060182.4A patent/CN107072679A/en active Pending
- 2015-11-05 EP EP15857366.7A patent/EP3215031A4/en not_active Withdrawn
- 2015-11-05 CA CA2961926A patent/CA2961926A1/en not_active Abandoned
- 2015-11-05 WO PCT/US2015/059184 patent/WO2016073684A1/en active Application Filing
- 2015-11-05 AU AU2015343028A patent/AU2015343028A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20010004700A1 (en) * | 1998-04-10 | 2001-06-21 | Honeycutt John S. | Rotational atherectomy device |
US20090018565A1 (en) * | 2006-06-30 | 2009-01-15 | Artheromed, Inc. | Atherectomy devices, systems, and methods |
Non-Patent Citations (1)
Title |
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See also references of EP3215031A4 * |
Also Published As
Publication number | Publication date |
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CA2961926A1 (en) | 2016-05-12 |
JP2017533760A (en) | 2017-11-16 |
EP3215031A1 (en) | 2017-09-13 |
AU2015343028A1 (en) | 2017-03-30 |
EP3215031A4 (en) | 2018-06-20 |
CN107072679A (en) | 2017-08-18 |
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