WO2022215000A1 - Ensemble cathéter avec renfort - Google Patents

Ensemble cathéter avec renfort Download PDF

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Publication number
WO2022215000A1
WO2022215000A1 PCT/IB2022/053223 IB2022053223W WO2022215000A1 WO 2022215000 A1 WO2022215000 A1 WO 2022215000A1 IB 2022053223 W IB2022053223 W IB 2022053223W WO 2022215000 A1 WO2022215000 A1 WO 2022215000A1
Authority
WO
WIPO (PCT)
Prior art keywords
catheter
tube
stiffener
inflation
balloon
Prior art date
Application number
PCT/IB2022/053223
Other languages
English (en)
Inventor
Jaclyn KAWWAS
Original Assignee
Medtronic Vascular, Inc.
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
Priority claimed from US17/653,714 external-priority patent/US20220323718A1/en
Application filed by Medtronic Vascular, Inc. filed Critical Medtronic Vascular, Inc.
Priority to CN202280035264.3A priority Critical patent/CN117377510A/zh
Priority to EP22716506.5A priority patent/EP4319850A1/fr
Publication of WO2022215000A1 publication Critical patent/WO2022215000A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0043—Catheters; Hollow probes characterised by structural features
    • A61M25/005—Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids
    • A61M25/0052—Localized reinforcement, e.g. where only a specific part of the catheter is reinforced, for rapid exchange guidewire port
    • 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
    • A61M2025/0004—Catheters; Hollow probes having two or more concentrically arranged tubes for forming a concentric catheter system
    • 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
    • A61M2025/1061—Balloon catheters with special features or adapted for special applications having separate inflations tubes, e.g. coaxial tubes or tubes otherwise arranged apart from the catheter tube
    • 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
    • A61M2025/1093—Balloon catheters with special features or adapted for special applications having particular tip characteristics
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0009—Making of catheters or other medical or surgical tubes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0043—Catheters; Hollow probes characterised by structural features
    • A61M25/0045—Catheters; Hollow probes characterised by structural features multi-layered, e.g. coated

Definitions

  • This disclosure is related generally to a catheter assembly, and more particularly to a balloon catheter assembly having a reinforced inflation lumen to resist pressure exerted on the inflation lumen when the balloon is inflated.
  • Balloons mounted on the distal ends of catheters or other medical devices are widely used in medical treatment.
  • a medical balloon may be used to widen a vessel into which the catheter is inserted, open a blocked vessel and/or deliver a medical device (e.g., a stent) to a treatment location inside a body, among other uses.
  • the balloon is delivered to a treatment location by inserting the balloon in an uninflated configuration through a body lumen (e.g., a blood vessel).
  • Balloons can be inserted through a body lumen by tracking the uninflated balloon through an introducer sheath and/or along a guidewire.
  • the balloon is inflated.
  • the balloon is deflated and withdrawn from the patient's body. In some cases, the balloon may later be re-introduced into the same or another body lumen of the patient.
  • a balloon catheter generally comprises an inflation conduit and a balloon.
  • the inflation conduit includes an inner inflation tube, an outer inflation tube disposed around the inner inflation tube, and an inflation lumen disposed between the inner and outer inflation tubes.
  • the inner inflation tube includes a first polymer material and a stiffener integrated into the inner inflation tube to increase a strength of the inner inflation tube.
  • the stiffener has a second polymer material different from the first polymer material.
  • the balloon is attached to a distal end portion of the inflation conduit. An interior space of the balloon is in fluid communication with the inflation lumen to inflate the balloon when the inflation lumen is placed in fluid communication with an inflation source.
  • a catheter generally comprises a catheter tube defining a guidewire lumen.
  • the catheter tube comprises a first polymer material, and a stiffener integrated into the first polymer material to increase a strength of the catheter tube.
  • the stiffener comprises a second polymer material different from the first polymer material.
  • FIG. 1 is a fragmentary perspective of a balloon catheter
  • FIG. 2A is cross-section of the balloon catheter through line 2A-2A in Fig. 1;
  • FIG. 2B is cross-section of the balloon catheter through line 2B-2B in Fig. 1;
  • FIG. 3A is a side elevation of an inner inflation tube of the balloon catheter
  • FIG. 3B is a cross-section of the inner inflation tube through line 3B-3B in Fig.
  • FIG. 3C is cross-section of the inner inflation tube through line 3C-3C in Fig. 3A;
  • FIG. 4 is a fragmentary perspective of a balloon catheter of another embodiment
  • FIG. 5 is a fragmentary perspective of an inner inflation tube of the balloon catheter in Fig. 4;
  • FIG. 6 is a cross-section of the inner inflation tube in Fig. 5;
  • FIG. 7A is an illustration of a sheet rolling process for making a guidewire lumen
  • FIG. 7B is an illustration of a guidewire lumen made by the process in Fig. 7A;
  • FIG. 7C is another illustration of a guidewire lumen made by the process in Fig. 7A;
  • FIG. 8 is an illustration of a ribbon wrapping process for making a guidewire lumen of another embodiment
  • FIG. 9 is an illustration of a process of making a guidewire lumen of another embodiment
  • FIGS. 10 and 11 are illustrations of ribbons for forming a guidewire lumen
  • FIG. 12 is an illustration of a tube formed by ribbon wrapping.
  • the balloon catheter 10 comprises a medical balloon assembly, generally indicated at 12, and an inflation conduit assembly, generally indicated at 14.
  • the inflation conduit assembly 14 defines an inflation lumen 15 and is fluidly coupled to the balloon assembly 12 to deliver inflation fluid through the inflation lumen to the interior of the balloon assembly.
  • the balloon assembly 12 comprises at least one balloon 16.
  • the balloon assembly 12 may include an additional number of balloons without departing from the scope of the disclosure.
  • Each balloon may comprise one or more layers each having the same or different properties and constructions.
  • the balloons 16 may be formed by any suitable manner such as from parisons or extrusion.
  • inflation of the balloon 16 exerts pressure on the inside of the balloon, creating stress on the portion of the inflation conduit 14 extending through the balloon.
  • the inflation conduit 14 experiences radial compression as a result of the pressure exerted by the inflated balloon.
  • the stresses on the inflation conduit can cause the inflation lumen to collapse preventing a guide wire from moving freely within the lumen.
  • the balloon catheter 10 comprises a fully assembled balloon catheter that includes the medical balloon assembly 12, among other components.
  • the balloon catheter 10 may also comprise a stent (not shown) received around the deflated balloon assembly 12.
  • a medical balloon assembly can comprise a subassembly of the balloon catheter.
  • a balloon catheter 10 comprises the medical balloon assembly 12 in a subassembly separate from the inflation conduit 14.
  • the balloon 16 comprises a single piece of monolithic material.
  • the balloon 16 is formed from a bondable material, such as one of a PEBA and a nylon (e.g., one of PEBAX® elastomer and nylon 12).
  • the balloon 16 can also have other configurations.
  • one or more of the balloons of the balloon assembly can comprise a multi-layer balloon (e.g., co-extruded, multilayer balloon) or have other arrangements of sections of discrete materials.
  • portions (e.g., layers) of the balloon that contact the inflation conduit are formed from bondable materials such that the components of the medical balloon assembly can be secured by direct bonds. 138
  • the balloon 16 comprises a proximal neck defining the proximal end of the balloon and a distal neck defining the distal end of the balloon.
  • a length of the balloon 16 extends along an axis of the balloon from the proximal end to the distal end thereof, and an inflatable portion 17 extends along the length of the balloon assembly between the proximal and distal necks.
  • the inflatable portion 17 of the balloon 16 comprises a body, a proximal cone extending between the proximal neck and the body, and a distal cone extending between the distal neck and the body.
  • the inflatable portion 17 When inflation fluid is delivered to the interior of the balloon 16 through the inflation conduit 14, the inflatable portion 17 is configured to radially expand from an uninflated configuration (not shown) to an inflated configuration (FIG. 1). Thus, the inflatable portion 17 defines an interior space of the balloon 16 when the balloon is inflated.
  • the inflatable portion 17 in the uninflated configuration of the balloon 16, the inflatable portion 17 comprises folds (e.g., wings) that are configured to wrap circumferentially around the balloon.
  • the balloon can also have other arrangements in the uninflated configuration in certain embodiments.
  • the balloon 16 can be one of non-compliant, semi-compliant, and compliant in the inflated configuration.
  • the inflatable portion 17 of the balloon 16 has a generally cylindrical shape having conically tapered end segments in the inflated configuration. In one or more embodiments, the balloon 16 has other shapes in the inflated configuration.
  • the illustrated inflation conduit 14 is part of an elongate catheter body of the illustrated balloon catheter 10.
  • the inflation conduit 14 has a proximal end portion configured for connection to an inflation fitting, a distal end portion secured to the balloon assembly 12, and a length extending along an axis of the inflation conduit from the proximal end portion to the distal end portion.
  • the inflation conduit is connectable to a source of inflation fluid (not shown) for inflating the balloon 16.
  • the inflation lumen 15 extends from the proximal end portion to the distal end portion to provide fluid communication between the source of inflation fluid and the interior of the balloon assembly 12.
  • the illustrated inflation conduit 14 comprises an inner inflation tube, generally indicated at reference numeral 20, and an outer inflation tube 22.
  • the inflation lumen 15 is located radially between the inner inflation tube 20 and the outer inflation tube 22.
  • the inflation conduit 14 can have other configurations (e.g., the inflation conduit can comprise a single tube).
  • the inner inflation tube 20 functions as a guidewire tube defining a guidewire lumen 24.
  • the guidewire lumen 24 is configured to slidably receive a guidewire GW therein such that the balloon catheter 10 can be advanced along a body lumen by sliding along a preplaced guidewire.
  • the illustrated inner inflation tube 20 comprises a proximal portion 26, an intermediate portion 28 extending distally from the proximal portion, and a distal portion 30, extending distally from the intermediate portion.
  • the inner inflation tube 20 of the inflation conduit 14 comprises a three-layer construction including an inner layer 32, a tie layer 34 disposed around the inner layer, and an outer layer 36 disposed around the tie layer.
  • the tie layer 34 is configured to bond the inner layer 32 to the outer layer 36.
  • the inner layer 32 comprises HDPE and the outer layer 36 comprises Pebax. The lubricious qualities of HDPE facilitate movement of the guidewire GW in the inner inflation tube 20.
  • the inner inflation tube 20 can have other configurations.
  • the inner inflation tube 20 can comprise a single layer tube.
  • a lubricious layer or coating may be disposed on an inner surface of the inner inflation tube 20 to facilitate guidewire delivery.
  • At least one stiffener 38 is provided on or as part of the inner inflation tube 20 to reinforce the tube against compression forces exerted on the inflation conduit 14 when the balloon 16 is inflated.
  • the stiffener 38 prevents the inner inflation tube 20 from being collapsed, or at least partially collapsed, under the pressure of the inflated balloon 16. Therefore, a condition of guidewire lock where the inner inflation tube 20 compresses around the guidewire GW preventing the guidewire from freely moving within the inner inflation tube is prevented.
  • the stiffener 38 is coextruded with outer layer 36 of the inflation tube 20. Coextruding the stiffener 38 allows the inner inflation tube 20 to maintain its outer diameter keeping the low profile configuration of the inner inflation tube.
  • the stiffener 38 may comprise a stiffer polymer material than the outer layer 36 to reinforce the strength of the outer layer while still maintaining the flexibility of the inner inflation layer 20.
  • the stiffener 38 may comprise a stiffer Pebax material than the Pebax material of the outer layer 36.
  • the stiffener 38 comprises Pebax 72D. Still other polymer materials are envisioned.
  • the stiffener 38 comprises a polymer material extruded in a spiral configuration around the outer layer 36.
  • a single continuous stiffener element 38 extends along the inner inflation tube 20. The spiral configuration allows the inner inflation tube 20 to maintain its flexibility while avoiding preferential bending in one direction/area.
  • the spiral configuration of the stiffener 38 may have a constant pitch as illustrated, or the pitch may vary along an extension of the stiffener. It will be understood that reducing the pitch of the stiffener 38 will increase the relative stiffness of the inner inflation tube 20 at that particular location, and increasing the pitch of the stiffener will reduce the relative stiffness of the inner inflation tube at that particular location.
  • the stiffener 38 may also have a constant width and/or thickness, or the width/thickness of the stiffener may vary along the length of the extrusion. In the illustrated embodiment, the stiffener 38 is located only in the distal portion 30 of the inner inflation tube 20. In particular, the stiffener 38 is located primarily within the inflation portion 17 of the balloon 16.
  • the stiffener 38 could be located at other portions (i.e., intermediate portion 28 and proximal portion 26) without departing from the scope of the disclosure. Additionally, the stiffener 38 may be located in two or more sections of the inner inflation tube 20. Thus, the stiffener 38 may be located in all or at least two of the proximal portion 26, intermediate portion 28, and distal portion 30. Further, the stiffener 38 may be implemented in any application where it is desired to increase the strength of the guidewire lumen. This includes locations remote from the balloon, and in catheters that do not have balloons.
  • an outer diameter of the inner inflation tube 20 may also vary along a length L of the inner inflation tube which may alter the stiffness of the tube along its length.
  • the outer diameter of the inner inflation tube 20 tapers along at least a part of the intermediate portion 28 such that the proximal portion 26 has a larger outer diameter than the distal portion 30.
  • An inner diameter of the inner inflation tube 20 may remain substantially constant along the length L of the inner inflation tube to facilitate receipt of the guidewire GW. Therefore, a thickness of the inner inflation tube 20 is greater along the proximal portion 26 than the distal portion 30.
  • locating the stiffener 38 in the reduced thickness section of the distal portion 30 reinforces the distal portion equipping the distal portion to withstand the pressures exerted on the distal portion from the inflated balloon 16.
  • the balloon catheter 110 may comprise an inflation conduit 114 including an inner inflation tube 120 having stiffeners 138 that extend axially along a length of the inner inflation tube such that the stiffeners extend generally parallel to a longitudinal axis of the inner inflation tube.
  • the stiffeners 138 are circumferentially spaced around the inner inflation tube 120. In the illustrated embodiment, there are five stiffeners 138 equally spaced around the circumference of the inner inflation tube 120. However, more or less stiffeners 138 having different spacing is envisioned without departing from the scope of the disclosure.
  • the balloon catheter 110 is otherwise constructed and functions substantially the same as balloon catheter 10 of the previous embodiment.
  • a sheet of polymer 240 may be extruded such that molecules 242 (broadly, stiffeners) of the polymer generally extend in a common direction.
  • the molecules extend transverse to a longitudinal axis of the sheet 240.
  • the molecules 242 may extend generally orthogonal to the longitudinal axis of the sheet 240.
  • a guidewire lumen 244 is created by rolling the sheet 240 around a mandrel 246 to form a tube 248 made from the sheet. The molecules 242 will then extend circumferentially around the guidewire lumen 244.
  • This orientation of the molecules 242 increases the strength of the tube 248 against radial compression. Strengthening the tube 248 radially may also allow the device (e.g., catheter), apart which the tube is included, to maintain a low profile and/or increase the size of the guidewire lumen 244 without sacrificing the strength of the tube. Additionally, this configuration of the tube 248 creates a reinforced guidewire lumen 244 using only polymer materials.
  • edges of the sheet 240 are heat or laser bonded to seal the edges of the sheet forming the tube 248 (FIG. 7B). Applying heat to the tube 248 may also smooth out an inner surface of the tube to facilitate delivering a guidewire through the tube.
  • the tube 248 could be formed by other means without departing from the scope of the disclosure. For instance, the edges of the sheet 240 could be laminated to form the tube 248 (Fig. 7C).
  • the construction of the tube 248 could be formed as part of a multilayer tube including the tube 248 as one of the layers.
  • the tube 248 could be formed as a top/outer layer of a three-layer tube including a middle tie layer and an inner layer (e.g., HDPE layer).
  • an inner layer e.g., HDPE layer.
  • a ribbon of polymer material 340 could be extruded and wrapped around a mandrel 346 to form a tube 348 (e.g., catheter tube) defining a guidewire lumen.
  • the ribbon 340 is extruded such that molecules 342 (broadly, stiffeners) of the material extend longitudinally along the extruded ribbon.
  • the ribbon 340 is then stretched longitudinally and wrapped in a spiral configuration around the mandrel 346 such that the molecules 342 of the material extend circumferentially around the tube 348.
  • the heat from extruding the ribbon of material 340 bonds the spiraled ribbon sections together forming the resulting tube 348.
  • a heat shrink can be placed over the spiraled ribbon 340 and heated to bond the spiraled segments together to form the tube 348.
  • the tube 348 alone can define the guidewire lumen or the ribbon or polymer material 340 could be wrapped around another tube to define the guidewire lumen.
  • a single or multi-layer tube may be used as a mandrel for the ribbon 340 to be wrapped around the tube to form a tube including both the single/multi-layer tube and the wrapped ribbon.
  • a ribbon of material 340’ is wrapped around an inner liner 345’ which is disposed around a mandrel 346’.
  • the inner liner 345’ comprises a multi-layer tube.
  • the inner liner 345’ may include an inner layer of HDPE and a tie layer disposed around the inner layer.
  • the ribbon 340’ is wrapped in a spiral configuration around the inner liner 345’ and mandrel 346’ such that molecules 342’ (broadly, stiffeners) of the material extend circumferentially around the resulting tube 348’ comprising the inner liner 345’ and the wrapped ribbon 340’.
  • the resulting tube is a tri layer tube including the inner layer of HDPE, the middle tie layer, and the outer ribbon layer.
  • Other tube configurations including the wrapped ribbon layer are envisioned without departing from the scope of the disclosure.
  • the ribbon of polymer material 340, 340’ comprises a single polymer material.
  • a ribbon of material 340A may include an inner longitudinally extending strip of harder polymer material and outer longitudinally extending strips of softer polymer material (FIGS. 10A and 11A).
  • a ribbon of material 340B may include an inner longitudinally extending strip of softer polymer material and outer longitudinally extending strips of harder polymer material (FIGS. 10B and 1 IB).
  • a ribbon of material 340C may include a first longitudinally extending strip of harder polymer material and a second, adjacent longitudinally extending strip of softer polymer material (FIGS. IOC and 11C).
  • a ribbon of material 340D may include a longitudinally extending strip of harder polymer material embedded within a longitudinally extending strip of softer polymer material (FIGS. 10D and 1 ID). The ribbons 340A-D when stretched and wrapped around a mandrel in a spiral configuration will produce a tube having alternating soft and hard sections spaced longitudinally along a length of the tube to provide strength to the tubing to resist radial compression while maintaining flexibility of the tube for traversing through the body.
  • Figure 12 illustrates a tube 448 having a relatively soft longitudinal section 450 formed from a softer polymer material, and a relatively hard longitudinal section 452 form from a harder polymer material. Still other configurations of polymer materials are envisioned.
  • the ribbon may also include a polymer material and an additive included in the polymer material. For example, an additive improving the lubricity of the ribbon material could be added to the polymer material.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biophysics (AREA)
  • Pulmonology (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Child & Adolescent Psychology (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

Un cathéter à ballonnet (10) comprend un conduit de gonflage (14) comprenant un tube de gonflage interne (20), un tube de gonflage externe (22) disposé autour du tube de gonflage interne, et une lumière de gonflage (15) disposée entre les tubes de gonflage interne et externe. Le tube de gonflage interne comprend un premier matériau polymère et un renfort (38) intégré dans le tube de gonflage interne pour augmenter la solidité du tube de gonflage interne. Le renfort comprend un second matériau polymère différent du premier matériau polymère. Un ballonnet (16) est fixé à une partie d'extrémité distale du conduit de gonflage. Un espace intérieur du ballonnet est en communication fluidique avec la lumière de gonflage pour gonfler le ballonnet lorsque la lumière de gonflage est placée en communication fluidique avec une source de gonflage.
PCT/IB2022/053223 2021-04-07 2022-04-06 Ensemble cathéter avec renfort WO2022215000A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202280035264.3A CN117377510A (zh) 2021-04-07 2022-04-06 具有加强件的导管组件
EP22716506.5A EP4319850A1 (fr) 2021-04-07 2022-04-06 Ensemble cathéter avec renfort

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US202163171773P 2021-04-07 2021-04-07
US63/171,773 2021-04-07
US17/653,714 US20220323718A1 (en) 2021-04-07 2022-03-07 Catheter Assembly with Stiffener
US17/653,714 2022-03-07

Publications (1)

Publication Number Publication Date
WO2022215000A1 true WO2022215000A1 (fr) 2022-10-13

Family

ID=81308017

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2022/053223 WO2022215000A1 (fr) 2021-04-07 2022-04-06 Ensemble cathéter avec renfort

Country Status (1)

Country Link
WO (1) WO2022215000A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030065352A1 (en) * 2001-09-28 2003-04-03 Dachuan Yang Balloon catheter with striped flexible tip
US6629952B1 (en) * 2000-12-29 2003-10-07 Scimed Life Systems, Inc. High pressure vascular balloon catheter
US20040002728A1 (en) * 2002-07-01 2004-01-01 Speck Marc L. Coil reinforced multilayered inner tubular member for a balloon catheter
US20100004593A1 (en) * 2006-09-13 2010-01-07 Boston Scientific Scimed, Inc. Balloon catheter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6629952B1 (en) * 2000-12-29 2003-10-07 Scimed Life Systems, Inc. High pressure vascular balloon catheter
US20030065352A1 (en) * 2001-09-28 2003-04-03 Dachuan Yang Balloon catheter with striped flexible tip
US20040002728A1 (en) * 2002-07-01 2004-01-01 Speck Marc L. Coil reinforced multilayered inner tubular member for a balloon catheter
US20100004593A1 (en) * 2006-09-13 2010-01-07 Boston Scientific Scimed, Inc. Balloon catheter

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