US20150112256A1 - Medical balloon with radiopaque identifier for precisely identifying the working surface - Google Patents

Medical balloon with radiopaque identifier for precisely identifying the working surface Download PDF

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Publication number
US20150112256A1
US20150112256A1 US14/383,739 US201314383739A US2015112256A1 US 20150112256 A1 US20150112256 A1 US 20150112256A1 US 201314383739 A US201314383739 A US 201314383739A US 2015112256 A1 US2015112256 A1 US 2015112256A1
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United States
Prior art keywords
balloon
catheter
radiopaque
working surface
shaft
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.)
Abandoned
Application number
US14/383,739
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English (en)
Inventor
Pat Byrne
Angela Susan Crall
Robert Righi
Allan Ronan
Paul Merton Wales
Sean Wall
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.)
ClearStream Technologies Ltd
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ClearStream Technologies Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ClearStream Technologies Ltd filed Critical ClearStream Technologies Ltd
Priority to US14/383,739 priority Critical patent/US20150112256A1/en
Publication of US20150112256A1 publication Critical patent/US20150112256A1/en
Abandoned legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A61M25/1002—Balloon catheters characterised by balloon shape
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A61M25/1027—Making of balloon catheters
    • A61M25/1029—Production methods of the balloon members, e.g. blow-moulding, extruding, deposition or by wrapping a plurality of layers of balloon material around a mandril
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A61M25/1027—Making of balloon catheters
    • A61M25/1029—Production methods of the balloon members, e.g. blow-moulding, extruding, deposition or by wrapping a plurality of layers of balloon material around a mandril
    • A61M2025/1031—Surface processing of balloon members, e.g. coating or deposition; Mounting additional parts onto the balloon member's surface
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A61M2025/1043—Balloon catheters with special features or adapted for special applications
    • A61M2025/105—Balloon catheters with special features or adapted for special applications having a balloon suitable for drug delivery, e.g. by using holes for delivery, drug coating or membranes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A61M2025/1043—Balloon catheters with special features or adapted for special applications
    • A61M2025/1079—Balloon catheters with special features or adapted for special applications having radio-opaque markers in the region of the balloon

Definitions

  • This disclosure relates generally to balloons for performing medical procedures, such as angioplasty and, more particularly, to a medical balloon having a predetermined portion, such as a working surface, that may be precisely located or identified during use.
  • Balloons are routinely used to resolve or address flow restrictions or perhaps even complete blockages in tubular areas of the body, such as arteries or veins. In many clinical situations, the restrictions are caused by hard solids, such as calcified plaque, and require the use of high pressures to compact such blockages.
  • Commercially available balloons employ complex technology to achieve high pressure requirements without sacrificing the profile of the balloon. Besides high pressure requirements, the balloons should also be resistant to puncture, easy to track and push, and present a low profile, especially when used for angioplasty.
  • angioplasty balloons are expanded from a deflated, folded state to an expanded state within a vessel to treat a target area, such as a portion of the circumferential inner wall I of a blood vessel V, as shown in FIGS. 1 and 2 .
  • the inflation of a balloon 12 with wall 28 is traditionally completed using an X-ray contrast agent CM along dimension DX to provide better visibility under X-ray or other form of radiography R during the interventional procedure, as illustrated in FIGS. 3 and 3 a (which shows the intensity measured by a fluoroscope detector plate, FDP).
  • FDP fluoroscope detector plate
  • a 70/30 percent mixture of contrast agent and saline is used to inflate the balloon during an angioplasty procedure.
  • a desirable goal is to reduce inflation and deflation times required for balloons without sacrificing the profile of the balloons, especially for large volume balloons (which can require up to two minutes of inflation/deflation times with the contrast agent).
  • the use of contrast agent prolongs the inflation/deflation times and also poses the risk of iodine exposure to patients sensitive to iodine.
  • a non-radiopaque substance could be used in lieu of the contrast agent, such as for example saline or carbon dioxide, but such substances are invisible during X-ray imaging, and thus do not enhance visibility.
  • the physician performing the angioplasty procedure should be able to locate the position of the uninflated balloon with accuracy, so that the balloon will be properly positioned once inflated. This is conventionally accomplished by attaching marker bands on the catheter shaft in the region corresponding to the balloon working surface.
  • This “working surface” is the surface along the portion of the balloon that is used to achieve the desired treatment effect, such as contacting the calcified plaque (which surface in the case of a balloon having conical or tapering sections at the proximal and distal ends is typically co-extensive with a generally cylindrical barrel section).
  • misalignment amount X between each interior marker band M carried by shaft S and working surface W of balloon 12 which also typically includes a radiopaque tip P at the distal end.
  • misalignment amount X between each interior marker band M carried by shaft S and working surface W of balloon 12 , which also typically includes a radiopaque tip P at the distal end.
  • the resulting misalignment may prevent the clinician from accurately identifying the location of the working surface of the balloon during an interventional procedure. This may lead to a geographic misplacement, or “miss,” of the intended contact between the target area T and the working surface W of the balloon 12 (see FIG. 2 ). It is especially desirable to avoid such an outcome when the balloon is designed to deliver a payload (such as a drug, stent, or both) or a working element to a specified location within the vasculature, since a miss may prolong the procedure (such as, for example, by requiring redeployment of the balloon 12 or the use of another balloon catheter in the case of a drug coated balloon).
  • a payload such as a drug, stent, or both
  • the balloon may also be subject to a phenomenon known as “pancaking.” In this condition, the balloon 12 folds down upon itself to a flattened state, as shown in FIG. 5 . This situation may cause the balloon to be viewed through fluoroscopy as perhaps still being in the inflated condition, since the full width of the balloon may be perceived in the flattened state. This can give the clinician the false perception that the balloon remains inflated, when in fact it is not.
  • the need is identified for a balloon for which the working surface may be identified during an interventional procedure with enhanced precision.
  • the solution would take into account the possible mismatch between fixed locations on the catheter shaft and the balloon to define the working surface, and would operate independent of the position of the portion of the catheter shaft within the balloon.
  • the improved identification may also allow for the better detection of the false perception of deflation caused by pancaking.
  • procedural efficiency would be enhanced without remarkably increasing cost or complexity, and in a manner that can be applied to many existing catheter technologies without extensive modification.
  • An object of the disclosure is to provide a balloon for which the working surface may be identified during an interventional procedure with enhanced precision.
  • FIGS. 1-9 are illustrative of the background of the invention.
  • FIG. 10 illustrates a first embodiment according to the disclosure
  • FIG. 11 illustrates a second embodiment according to the disclosure
  • FIG. 12 illustrates a third embodiment according to the disclosure
  • FIG. 13 illustrates a fourth embodiment according to the disclosure
  • FIG. 14 illustrates a fifth embodiment according to the disclosure
  • FIG. 15 illustrates a sixth embodiment according to the disclosure
  • FIG. 16 illustrates a seventh embodiment according to the disclosure
  • FIG. 17 illustrates an eighth embodiment according to the disclosure.
  • FIG. 18 illustrates the embodiment of FIG. 17 in a folded condition.
  • a catheter 10 having a distal portion 11 with a balloon 12 mounted on a catheter tube 14 .
  • the balloon 12 has an intermediate section 16 , or “barrel,” and end sections 18 , 20 .
  • the end sections 18 , 20 reduce in diameter to join the intermediate section 16 to the catheter tube 14 (and thus sections 18 , 20 are generally termed cones or cone sections).
  • the balloon 12 is sealed at balloon ends (proximal end 15 a and distal end 15 b ) on the cone sections 18 , 20 to allow the inflation of the balloon 12 via one or more inflation lumens 17 extending within catheter tube 14 and communicating with the interior of the balloon 12 .
  • the catheter tube 14 also includes an elongated, tubular shaft 24 forming a guidewire lumen 23 that directs the guidewire 26 through the catheter 10 , and along the distal end of which the balloon 12 may be located.
  • this guidewire 26 may extend through the proximal end of the catheter 10 and a first port 25 of a connector 27 into the lumen 23 to achieve an “over the wire” (OTW) arrangement, but could also be provided in a “rapid exchange” (RX) configuration, in which the guidewire 26 exits a lateral opening 14 a closer to the distal end (see FIG. 9 ) or else is fed through a passage associated with the tip P distally of the balloon 12 (“short” RX; not shown).
  • a second port 29 may also be associated with catheter 10 , such as by way of connector 27 , for introducing a fluid (e.g., saline, a contrast agent, or both) into the interior compartment of the balloon 12 via the inflation lumen 17 .
  • a fluid e.
  • Balloon 12 may include a single or multi-layered balloon wall 28 forming the interior for receiving the inflation fluid.
  • the balloon 12 may be a non-compliant balloon having a balloon wall 28 that maintains its size and shape in one or more directions when the balloon is inflated. Examples of non-compliant balloons may be found in U.S. Pat. No. 6,746,425 and Publication Nos. US 2006/0085022, US 2006/0085023 and US 2006/0085024, the disclosures of which are hereby incorporated herein by reference.
  • the balloon 12 in such case also has a pre-determined surface area that remains constant during and after inflation, also has a pre-determined length and pre-determined diameter that each, or together, remain constant during and after inflation.
  • the balloon 12 could be semi-compliant or compliant instead, depending on the particular use.
  • the balloon 12 may have a radiopaque quality.
  • this radiopaque quality is provided in a manner that allows for a clinician to differentiate, with relative ease and high precision, one portion of the balloon 12 from another (such as the barrel section 16 including the working surface W from the cone sections 18 , 20 ). This helps the clinician ensure the accurate positioning of the balloon 12 and, in particular, the working surface W, at a specified treatment location. This may be especially important in the delivery of a particular item, such as a drug or stent, via the balloon working surface W, as outlined in more detail in the following description.
  • the radiopaque quality is achieved by providing strategically positioned identifiers, such as one or more at least partially radiopaque markings 30 .
  • the markings 30 are provided at one or more locations on the surface of the balloon wall 28 to create a defined portion as the working surface W.
  • the term “marking” for purposes of this disclosure refers to a radiopaque material forming a single layer on the surface of the balloon wall 28 , as contrasted with a multi-layered arrangement (such as one comprising a first layer of a radiopaque material, such as a film, underlying another electroplated or deposited layer of a radiopaque material).
  • this marking 30 may be provided in the form of a pair of markings 30 , including a first strip 32 a located at the proximal end of the working surface W, and a second strip 32 b provided at the distal end of the working surface W.
  • the first and second strips 32 a, 32 b have their outer edges proximally or distally, as the case may be, in alignment with the point at which the barrel section 16 transitions to form the cone sections 18 , 20 , including in the deflated state of the balloon 12 .
  • the strips 32 a, 32 b may be provided in the form of narrow, elongated bands that extend around the entire circumference of the balloon 12 at the desired location(s) (including possibly at a medial portion of the working surface W, which helps the clinician to confirm the full inflation of the balloon 12 ).
  • the marking 30 is provided in a manner that does not require making the entire working surface W radiopaque, and also in a manner that does not prevent the working surface W from making full contact with the treatment area in the intended fashion (i.e., the marking 30 does not appreciably increase the diameter of the balloon 12 , including when inflated).
  • the marking 30 provided in this manner is separate and spaced apart from any inner member within the interior compartment of the balloon 12 , such as the shaft 24 forming the guidewire lumen 23 .
  • the balloon 12 with markings 30 in this embodiment may be created in various ways.
  • the markings 30 may be provided by applying a radiopaque material to a surface of the balloon wall 28 at the desired location in the form of a coating. This may be done by inking, spraying, printing, stamping, painting, adhering, or otherwise depositing (such as by chemical vapor deposition) the radiopaque material onto the balloon wall 28 (possibly with the application of a mask or the like, in which ease the techniques of dipping or rolling the balloon 12 in the radiopaque material to form the desired coating could be used).
  • the marking 30 may be provided during the process for fabricating the balloon wall 28 , such as for example during a coextrusion or blow molding process.
  • the marking 30 is provided along a portion of the balloon 12 other than along the working surface W, which surface may include no radiopaque identifier or marking of any kind.
  • the marking 30 may be provided only on one or both of the cone sections 18 , 20 of the balloon 12 .
  • the marking 30 is provided along the cone sections 18 , 20 up to the location in the longitudinal or axial direction where the working surface W begins and ends (e.g., the points where the cone sections 18 , 20 transition to the barrel section 16 at the proximal and distal ends, which are considered boundaries or edges of the working surface).
  • the marking 30 may extend along a portion of the cone sections 18 , 20 , or as shown in FIG. 12 , may extend along the entire cone section 18 , 20 , or at least to the point where it attaches to the catheter tube 14 (and thus may provide an indication of the overall balloon length L).
  • no portion of the catheter 10 associated with the working surface W may include an added radiopaque marker, element or material. Consequently, under fluoroscopy, the entire working surface W may be clearly differentiated from the portion of the balloon 12 including the radiopaque marking 30 or markings, and may also be differentiated form the full balloon length L.
  • a radiopaque quality may be provided so as to create an accurate indication of the overall balloon length L (that is, the distance between the ends 15 ) in order to make the balloon 12 locatable without regard to any marker or the like on the shaft 24 forming the guidewire lumen 23 .
  • This may be accomplished by providing the radiopaque identifier in the form of a marking 30 at or adjacent each of the locations where the balloon 12 terminates, such as for example at the proximal and distal ends 15 a, 15 b or on the bonds at the tube 14 or tip P.
  • This marking 30 may comprise a strip in the form of circumferential or annular bands 34 a, 34 b, similar to strips 32 a, 32 b described above in another embodiment, and may be applied in the same or a different manner. As shown in FIG. 14 , the strips 32 a, 32 b (whether on the cone sections 18 , 20 or barrel section 16 ) and bands, 34 a, 34 b may also be used together to allow for the clear and precise identification of both the ends of the balloon 12 and the working surface W, as well as the overall balloon length L (see FIG. 13 ).
  • the balloon 12 may also be provided with radiopaque identifiers that differ between the cone sections 18 , 20 and the barrel section 16 .
  • the barrel section 16 may include a plurality of markings 30 comprising, for example, a first pattern (e.g., diagonal strips 37 ).
  • one or both of the cone sections 18 , 20 may include a second pattern, which may be different from the first pattern (e.g., circles 39 ), thus providing an indication of the working surface W.
  • one or more of the markings 30 may take other forms of indicia, such as a logo O or alphanumeric information (such as a brand, trademark information, model or item number, catalog number, rated burst pressure, balloon length, balloon diameter, or the like), which again may be provided on the barrel section 16 , cone sections 18 , 20 , or any combination.
  • This identifier may be provided in a manner such that it can be perceived in the deflated state, or such that it may be read and understood when the balloon 12 is inflated or expanded, or both. In addition to helping define the location of the working surface W, this may also allow the clinician to verify or confirm that the correct balloon has been used and that it was successfully deployed or inflated.
  • Still another possibility is to provide graduated radiopaque markings, such as a rule, gradations, or a scale, that indicate the relative dimensions of the balloon 12 on inflation, which may be checked externally for confirmation, if necessary or desired (such as by using a LEMAITRE tape, a version of which is distributed under the VASCUTAPE brand).
  • graduated radiopaque markings such as a rule, gradations, or a scale
  • the radiopaque identifier may be in the form of one or more radiopaque markings 30 extending longitudinally along only one or both of the cone sections 18 , 20 of the balloon 12 , either along the entire cone section 20 , as shown, or only partially.
  • a single narrow strip 38 a may extend longitudinally between the distal end 15 b of the balloon 12 and the distal edge of the working surface W.
  • a plurality of such strips including but not limited to three strips 38 a, 38 b, 38 c, may be provided.
  • the plural strips may be spaced in the circumferential direction, and may have a greater spacing adjacent to the working surface W than at the ends 15 a or 15 b of the balloon 12 (at which points, the strips may actually converge and contact each other, or may remain spaced apart).
  • the use of a plurality of strips, such as two, three 38 a, 38 b, 38 c, or four or more, along one or both of cone sections 18 , 20 may allow the clinician to be better able to detect the existence of pancaking, since the strips 38 a, 38 b, 38 c, appear to be farther apart when the balloon 12 is inflated or pancaked, and closer when the balloon 12 is properly deflated ( 12 ′) and not flattened (compare FIGS. 17 and 18 ).
  • Balloons 12 that carry one or more surface elements, such as a payload (drug, stent, or both) or a working implement (cutter, focused force wire, or the like) into the vasculature may also benefit from the foregoing description of marking techniques.
  • a balloon 12 including a defined working surface W such as by providing radiopaque markings 30 at the transitions between the barrel section 16 and cone sections 18 , 20 , may include a portion coated with such a drug D, such as one designed for achieving a desired therapeutic effect when applied to the interior of the vessel.
  • the radiopaque identifier may also correspond to the location of the drug D on the balloon 12 , such as along the entire working surface W or only a portion of it.
  • the identifier may be provided by mixing a radiopaque agent or material in the drug formulation (e.g., active ingredient plus excipient) such that all portions of the balloon 12 coated with the drug become visible under fluoroscopy, by coating a portion of the balloon with a radiopaque material to which the drug formulation preferentially adheres (such that uncoated areas are not covered by the drug), or by adhering the drug formulation to portions of the balloon surface (such as the working surface W) that are not treated with radiopaque material (such as the cone sections in FIG. 12 ).
  • a radiopaque agent or material in the drug formulation e.g., active ingredient plus excipient
  • an identifier providing the desired radiopacity may be embedded in the wall 28 , including for example by providing it as a material layer of the wall 28 , or in a single layer between multiple layers of the wall 28 .
  • the drug D may be applied to the inflated balloon as part of the manufacturing process, and prior to folding for insertion in the vasculature. The clinician may thus with the benefit of a fluoroscope determine the precise positioning of the working surface W prior to inflating the balloon 12 in the vasculature to deliver the drug D to the desired location and provide the desired treatment regimen.
  • radiopaque materials include, but are not limited to, finely divided tungsten, tantalum, bismuth, bismuth trioxide, bismuth oxychloride, bismuth subcarbonate, other bismuth compounds, barium sulfate, tin, silver, silver compounds, rare earth oxides, and many other substances commonly used for X-ray absorption. The amount used may vary depending on the desired degree of radiopacity.
  • the identifiers may also comprise a radiopaque material applied to the interior surface of the balloon wall 28 , such as by painting or other bonding.
  • the radiopaque material comprises gold applied to the exterior or interior surface of the balloon 12 , such as in the form of a band (which may be any of the bands described herein).
  • the gold may be applied in leaf form, given its softness and malleability, which also means that it will not in any way hinder the expansion of the balloon 12 .

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  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Child & Adolescent Psychology (AREA)
  • Biophysics (AREA)
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US14/383,739 2012-03-09 2013-03-08 Medical balloon with radiopaque identifier for precisely identifying the working surface Abandoned US20150112256A1 (en)

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US201261608852P 2012-03-09 2012-03-09
NL2008439 2012-03-09
NL2008439 2012-03-09
PCT/US2013/029959 WO2013134688A2 (en) 2012-03-09 2013-03-08 Medical balloon with radiopaque identifier for precisely identifying the working surface
US14/383,739 US20150112256A1 (en) 2012-03-09 2013-03-08 Medical balloon with radiopaque identifier for precisely identifying the working surface

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EP (2) EP2822635B8 (es)
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US20150148780A1 (en) * 2012-03-09 2015-05-28 Clearstream Technologies Limited Medical balloon with a precisely identifiable portion
US20160074632A1 (en) * 2014-09-15 2016-03-17 Biotronik Ag Balloon catheter with uncoated balloon portion or second uncoated balloon
US9358042B2 (en) 2013-03-13 2016-06-07 The Spectranetics Corporation Expandable member for perforation occlusion
US20170056626A1 (en) * 2015-09-01 2017-03-02 Thomas Ischinger Balloon catheter for treatment of a vessel at a bifurcation
US10449336B2 (en) 2015-08-11 2019-10-22 The Spectranetics Corporation Temporary occlusions balloon devices and methods for preventing blood flow through a vascular perforation
US10499892B2 (en) 2015-08-11 2019-12-10 The Spectranetics Corporation Temporary occlusion balloon devices and methods for preventing blood flow through a vascular perforation
US20200001054A1 (en) * 2018-06-29 2020-01-02 Biosense Webster (Israel) Ltd. Reinforcement for irrigated electrophysiology balloon catheter with flexible-circuit electrodes
US20200155226A1 (en) * 2018-11-19 2020-05-21 Biosense Webster (Israel) Ltd. Medical Probe with Wiring Disposed Between Two Expandable Membranes
US20200269012A1 (en) * 2016-02-10 2020-08-27 Microvention, Inc. Intravascular Treatment Site Access
US11813418B2 (en) 2019-08-22 2023-11-14 Becton, Dickinson And Company Echogenic balloon dilation catheter and balloon thereof
US11957852B2 (en) 2021-01-14 2024-04-16 Biosense Webster (Israel) Ltd. Intravascular balloon with slidable central irrigation tube
US11963715B2 (en) 2016-11-23 2024-04-23 Biosense Webster (Israel) Ltd. Balloon-in-balloon irrigation balloon catheter
US11974803B2 (en) 2020-10-12 2024-05-07 Biosense Webster (Israel) Ltd. Basket catheter with balloon
US12029863B2 (en) * 2020-05-08 2024-07-09 Microvention, Inc. Intravascular treatment site access

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JP6223370B2 (ja) 2012-03-09 2017-11-01 クリアストリーム・テクノロジーズ・リミテッド 作用表面の場所を正確に識別するためのｘ線不透過性のインサートを有する医療用バルーン
EP2822633B1 (en) 2012-03-09 2019-02-06 Clearstream Technologies Limited Parison for forming blow molded medical balloon with modified portion, medical balloon, and related methods
CN108853688B (zh) 2012-03-09 2021-07-06 明讯科技有限公司 具有能精确标识工作表面位置的不透射线端部的医用囊
NZ709426A (en) 2012-12-31 2017-08-25 Clearstream Tech Ltd Catheter with markings to facilitate alignment
EP3655085A1 (en) * 2017-07-17 2020-05-27 Boston Scientific Scimed, Inc. Porous balloon having radiopaque marker

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JP6279494B2 (ja) 2018-02-14
US11771873B2 (en) 2023-10-03
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