WO2016185995A1 - バルーンカテーテル - Google Patents
バルーンカテーテル Download PDFInfo
- Publication number
- WO2016185995A1 WO2016185995A1 PCT/JP2016/064121 JP2016064121W WO2016185995A1 WO 2016185995 A1 WO2016185995 A1 WO 2016185995A1 JP 2016064121 W JP2016064121 W JP 2016064121W WO 2016185995 A1 WO2016185995 A1 WO 2016185995A1
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- WO
- WIPO (PCT)
- Prior art keywords
- balloon
- additional structure
- peripheral surface
- balloon catheter
- catheter
- Prior art date
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- 0 CCCC1C2C3(CCC*CCC4*C3)[C@]2[C@@]4C(C)CC1 Chemical compound CCCC1C2C3(CCC*CCC4*C3)[C@]2[C@@]4C(C)CC1 0.000 description 1
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Classifications
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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
- A61M25/1027—Making of balloon catheters
- A61M25/1036—Making parts for balloon catheter systems, e.g. shafts or distal ends
-
- 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
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/958—Inflatable balloons for placing stents or stent-grafts
-
- 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
- A61M25/1018—Balloon inflating or inflation-control devices
-
- 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
- A61M25/104—Balloon catheters used for angioplasty
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/958—Inflatable balloons for placing stents or stent-grafts
- A61F2002/9583—Means for holding the stent on the balloon, e.g. using protrusions, adhesives or an outer sleeve
-
- 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
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
- A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
- A61M25/0026—Multi-lumen catheters with stationary elements
- A61M2025/0034—Multi-lumen catheters with stationary elements characterized by elements which are assembled, connected or fused, e.g. splittable tubes, outer sheaths creating lumina or separate cores
-
- 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
- A61M2025/1084—Balloon catheters with special features or adapted for special applications having features for increasing the shape stability, the reproducibility or for limiting expansion, e.g. containments, wrapped around fibres, yarns or strands
-
- 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
- A61M2025/1086—Balloon catheters with special features or adapted for special applications having a special balloon surface topography, e.g. pores, protuberances, spikes or grooves
-
- 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
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
- A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
- A61M25/0026—Multi-lumen catheters with stationary elements
- A61M25/0029—Multi-lumen catheters with stationary elements characterized by features relating to least one lumen located at the middle part of the catheter, e.g. slots, flaps, valves, cuffs, apertures, notches, grooves or rapid exchange ports
-
- 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
- A61M25/0053—Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids having a variable stiffness along the longitudinal axis, e.g. by varying the pitch of the coil or braid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/753—Medical equipment; Accessories therefor
- B29L2031/7542—Catheters
- B29L2031/7543—Balloon catheters
Definitions
- the present invention is a medical device in which a balloon is provided on the distal end side of a shaft, and the balloon is inserted into a body lumen such as a blood vessel and used for various procedures such as percutaneous angioplasty and stenting. It relates to a catheter.
- a balloon catheter is known as one of medical devices for percutaneously treating a lesion site in a lumen such as a blood vessel.
- Balloon catheters are disclosed in Japanese Patent Application Laid-Open No. 05-084304 (Patent Document 1), Japanese Translation of PCT International Publication No. 2008-509749 (Patent Document 2), Japanese Patent Publication No. 2008-519654 (Patent Document 3), and the like.
- a balloon is provided on the distal end side of the shaft that is inserted into the lumen from outside the body, and the balloon can be expanded and contracted by pressure fluid supply / discharge operation on the proximal end side of the shaft located outside the body.
- a stenosis part of a blood vessel is expanded with a balloon, a stent is delivered and placed in the expanded stenosis part, or a calcified part is disposed with a blade arranged on the outer periphery of the balloon. Treatment such as making a cut in
- the characteristics required for a balloon in a balloon catheter vary depending on the specific application. For example, when a large force is required to expand a lumen, a high pressure resistance is required for the balloon wall. Is done. Moreover, in the use which makes a cut in the calcified part of the blood vessel, it is necessary to provide a high-hardness blade on the outer periphery of the balloon.
- the pressure resistance can be improved by changing the material of the balloon or increasing the thickness, or by changing the shape of the balloon and integrally forming a protruding blade on the outer periphery. It is also possible.
- Patent Document 4 discloses a structure in which a resin reinforcing tube having a perforated peripheral wall is inserted into a balloon for reinforcement.
- a molding die and special equipment for forming the resin reinforcing pipe apart from the balloon are required, but also the balloon and the resin reinforcing pipe need to be dimensioned with high precision, which makes it difficult to manufacture.
- the resin reinforcing tube is perforated on the peripheral wall of the tube body, the degree of freedom in shape is small, and it has been difficult to achieve various characteristics required for the balloon catheter.
- the present invention has been made in the background of the above-mentioned circumstances, and the problem to be solved is that it is possible to realize various requests required depending on applications and the like with a high degree of freedom. It is to provide a balloon catheter having a simple structure.
- a predetermined pattern is formed by being directly formed on at least one of the inner peripheral surface and the outer peripheral surface of the balloon.
- the additional structure is provided.
- the additional structure is directly formed on the surface of the balloon, the additional structure corresponding to the shape of the balloon with high accuracy can be realized. Further, the shape of the additional structure can be set with a large degree of freedom on the surface of the balloon, and is not limited to the tube shape as in the conventional structure described in Patent Document 4. Therefore, it is possible to advantageously realize the characteristics required for the balloon catheter.
- a second aspect of the present invention is a balloon catheter according to the first aspect, wherein the additional structure is formed on an inner peripheral surface of the balloon.
- the additional structure is directly formed on the inner peripheral surface of the balloon, direct contact of the additional structure with a body tissue such as a blood vessel is prevented.
- a body tissue such as a blood vessel
- the additional structure even if the additional structure is detached from the balloon, the additional structure remains in the catheter and the blood vessel wall is not damaged.
- a third aspect of the present invention is the balloon catheter according to the first or second aspect, wherein the additional structure is formed by at least one of thermal spraying and vacuum deposition.
- a fourth aspect of the present invention is the balloon catheter according to the first or second aspect, wherein the additional structure is formed by at least one of electroforming and etching.
- the additional structure can be realized with a higher degree of shape and thickness dimensional accuracy by utilizing a technique such as electroforming.
- a fifth aspect of the present invention is the balloon catheter according to any one of the first to fourth aspects, wherein the additional structure has a cylindrical mesh shape continuous in the circumferential direction of the balloon. Is.
- the mesh shape in this aspect includes various aspects in which openings are provided by connecting or intersecting linear bodies, for example, a structure including a plurality of spiral linear bodies intersecting each other, and a wavy shape
- a stent-like structure in which linear bodies meandering like a lightning bolt and extending in the circumferential direction are partially connected in the axial direction can also be employed.
- mesh-shaped additional structure according to the present embodiment can be employed in combination with the additional structure of another embodiment formed on the inner peripheral surface or the outer peripheral surface of the balloon according to a sixth embodiment described later.
- a sixth aspect of the present invention is the balloon catheter according to any one of the first to fifth aspects, wherein the additional structure has a linear shape continuous in the length direction of the balloon. is there.
- the additional structure can be protruded from the outer peripheral surface of the balloon, thereby forming a blade.
- the blade made of such an additional structure can be formed of a hard material such as a metal different from the balloon, and can be suitably used as a cutting balloon catheter.
- the additional structure can be projected to the inner peripheral surface of the balloon, and a so-called high pressure-resistant balloon of about 24 atm is formed for the coronary artery with improved pressure resistance performance. It becomes easy.
- a seventh aspect of the present invention is the balloon catheter according to any one of the first to sixth aspects, wherein the additional structure is deformable as the balloon expands or contracts.
- the additional structure itself is formed of a deformable material such as expansion and contraction, and for example, the additional structure is curved so that deformation such as expansion and contraction is permitted. Is also possible.
- the eighth aspect of the present invention is the balloon catheter according to any one of the first to seventh aspects, wherein the additional structure is fixed on the surface of the balloon.
- the balloon catheter having the structure according to the present embodiment by being fixed to the balloon, for example, damage to the additional structure can be prevented or the reinforcing effect on the balloon can be improved.
- the additional structure is directly formed on the inner peripheral surface or outer peripheral surface of the balloon, the structure for fixing the additional structure to the balloon can be compared with the case where the additional structure is formed separately and then fixed. It becomes easy to realize easily and firmly.
- the additional structure that accurately corresponds to the shape of the balloon can be provided with a large degree of freedom that is not limited to the tube shape or the like.
- Such an additional structure can cope with various required characteristics of the balloon catheter such as the pressure resistance performance and strength of the balloon and the setting of the blade on the outer peripheral side of the balloon.
- FIG. 1 is an overall explanatory view showing a schematic structure of a balloon catheter as an embodiment of the present invention. It is a longitudinal cross-sectional view which shows the distal end side of the balloon catheter shown by FIG. 1 in the expansion state of a balloon, Comprising: Explanatory drawing which shows the one aspect
- FIG. 3 is a sectional view taken along line III-III in FIG. 2. It is an external view which shows the distal end side of the balloon catheter as embodiment of this invention in the expansion state of a balloon, Comprising: It is explanatory drawing which shows another aspect of an additional structure.
- FIG. 5 is a VV cross-sectional view in FIG. 4.
- FIG. 1 shows a balloon catheter 10 as a first embodiment of the present invention.
- the balloon catheter 10 includes a long catheter 12, a balloon 14 is provided on the distal end side (left side in FIG. 1) of the catheter 12, and the proximal end side (see FIG. A hub 16 is provided on the right side of 1. Then, the distal end side of the catheter 12 is inserted into the blood vessel from the wrist or thigh of the human body to reach the treatment site such as the coronary artery, and the balloon 14 is inflated to push the stenosis site of the blood vessel. It is possible to perform treatments such as spreading and restoring normal blood flow.
- the catheter 12 has a double tube structure in which an outer shaft 20 is extrapolated to an inner shaft 18 that is tubular.
- both the inner shaft 18 and the outer shaft 20 can be formed of various materials and structures that are conventionally known as having the property of being curved along the blood vessel.
- synthetic resin materials such as polyamide, vinyl chloride, polyurethane, polyimide, polyethylene, polyester elastomer, polypropylene, polytetrafluoroethylene, polyetheretherketone, polyvinylidene fluoride, stainless steel, nickel-titanium alloy, etc.
- a metal material and a material formed by a combination thereof may be employed.
- the distal end portion of the inner shaft 18 protrudes from the distal end of the outer shaft 20 with a predetermined length, and a tip tip 22 is attached to the protruding end portion of the inner shaft 18.
- the tip 22 is preferably softer than the inner shaft 18 and has a tapered outer peripheral surface shape that gradually becomes smaller in diameter toward the distal end side. A central hole that communicates with the inner cavity is formed through.
- contrast markers 24 and 24 are attached to the distal end portion of the inner shaft 18 protruding from the outer shaft 20.
- the contrast marker 24 is made of a metal material having radiopacity such as platinum-iridium alloy, and is formed into an annular or C-shaped member and is fixed to the peripheral wall of the inner shaft 18.
- the balloon 14 is arranged in an extrapolated state at the distal end portion of the inner shaft 18 protruding from the outer shaft 20.
- the balloon 14 is formed of a cylindrical body formed of a film made of, for example, a deformable synthetic resin material, and can be expanded and contracted in the radial direction.
- polyethylene terephthalate nylon, polyamide, polyether amide, polyether block amide copolymer, polyethylene, polyethylene elastomer, polypropylene, silicone rubber, Latex rubber or the like is preferably used.
- the balloon 14 of the present embodiment is in an expanded state, and an axially intermediate portion is formed into a substantially cylindrical shape, and a tapered cylindrical shape that gradually decreases in diameter from both axial end portions toward the outside is integrated. It has a shape that extends to the top.
- the peripheral wall portion may be reduced in diameter so as to be crushed irregularly.
- the balloon 14 may be folded like an umbrella at a plurality of locations on the circumference. A predetermined folding shape that may be wrapped around may be set.
- both ends in the axial direction of the balloon 14 are fluid-tightly fixed to the outer peripheral surface of the distal end side of the outer shaft 20 or the outer peripheral surface of the distal end side of the inner shaft 18 at the small-diameter end of each tapered cylindrical shape. ing.
- a space sealed from the outside is formed inside the balloon 14 on the outer peripheral surface on the distal end side of the inner shaft 18.
- the space formed inside the balloon 14 is provided with an inner shaft 18 penetrating in the axial direction, and a space formed on the outer peripheral surface of the inner shaft 18 inside the outer shaft 20. Open and communicate.
- the balloon catheter 10 of the present embodiment is a rapid exchange type. That is, the outer shaft 20 has a structure in which the distal shaft 26 and the proxy shaft 28 are connected in the axial direction, and the proximal end portion of the inner shaft 18 inserted into the distal shaft 26 is the length of the outer shaft 20. In the middle portion in the vertical direction, an opening is made on the outer peripheral surface in the vicinity of the connecting portion of the distal shaft 26 and the proxy shaft 28 or in the vicinity thereof.
- a guide wire lumen 30 for inserting a guide wire is formed by the lumen of the inner shaft 18, and the guide wire lumen 30 extends from the distal end of the catheter 12 to the intermediate portion. That is, one end portion of the guide wire lumen 30 opens to the distal end of the catheter 12 through the distal tip 22, and the other end portion opens to the outer peripheral surface at the intermediate portion in the longitudinal direction of the outer shaft 20. is doing.
- a pressure adjusting lumen 32 is formed on the outer peripheral surface of the inner shaft 18 by the lumen of the outer shaft 20, and the pressure adjusting lumen 32 extends over substantially the entire length of the catheter 12. That is, the pressure adjusting lumen 32 is opened through the hub 16 on the proximal end side of the proximal shaft 28 and extends in the distal shaft 26 with an annular cross section on the outer peripheral side of the inner shaft 18. It opens to the distal end face and communicates with the balloon 14.
- the balloon 14 is provided with an additional structure 36 on the inner peripheral surface 34 thereof.
- the additional structure 36 of the present embodiment is formed directly on the inner peripheral surface 34 with the inner peripheral surface 34 of the balloon 14 as a single molding surface, whereby a plurality of additional structures 36 inclined to opposite sides in the circumferential direction are formed.
- the spiral linear bodies are crossed to form a substantially braided cylindrical mesh shape. That is, the additional structure 36 of the present embodiment is formed as a cylindrical body that is continuous in the circumferential direction and the axial direction as a whole by a plurality of linear bodies that are inclined in the circumferential direction at a predetermined angle and extend in the axial direction. .
- expansion / contraction deformation can be advantageously allowed by deformation of each linear body. Therefore, even in a state of being fixed to the inner peripheral surface of the balloon 14, the balloon 14 expansion / contraction deformation is allowed.
- the mesh-shaped additional structure 36 is disposed over substantially the entire inner peripheral surface 34 of the balloon 14.
- the position of the additional structure 36, the size of the area, and the like are as follows.
- the additional structure 36 may be disposed only in the cylindrical axial center portion of the balloon 14 where pressure deformation during expansion tends to increase.
- the wire diameter and mesh size of the additional structure 36 can be appropriately adjusted according to the characteristics required for the balloon catheter 10, and are not limited.
- the material of the additional structure 36 can be selected, and ceramics, synthetic resins, and the like can be used.
- the additional structure 36 made of a metal base material is formed and used by electroforming, etching, thermal spraying or vacuum deposition. Further, the additional structure 36 made of a resin-based material is formed and employed by thermal spraying or vacuum deposition.
- the additional structure 36 can be fixed to the balloon 14 with a certain amount of force.
- the additional structure 36 is not adhered to the inner peripheral surface 34 of the balloon 14 or is bonded more firmly. Can be.
- the additional structure 36 is fixed to the balloon 14. It is also possible to improve the wearing power.
- the additional structure 36 as described above is provided on the inner peripheral surface of the balloon 14, it is formed on the surface of the balloon 14 so as to correspond to the shape of the balloon 14 with high accuracy.
- the additional structure 36 having the shape described above can be provided stably, and the effect of improving the pressure resistance and strength of the additional structure 36 on the balloon 14 can be effectively and stably exhibited.
- the additional structure 36 is formed by electroforming, etching, or the like, the additional structure 36 is not limited to a tube shape as in the conventional structure, and an arbitrary shape, size, and arrangement position are set. Can be provided. In addition, since high dimensional accuracy can be obtained, performance can be stably obtained, and target performance such as improvement in pressure resistance, strength, and durability against the balloon 14 can be satisfactorily exhibited.
- the additional structure 36 is formed on the inner peripheral surface of the balloon 14, the additional structure 36 is covered with the balloon 14, and the additional structure 36 is added to a body tissue such as a blood vessel. Direct contact of the body 36 is prevented. Therefore, problems due to the direct contact of the additional structure 36 with the body tissue are avoided, and there is an advantage that a large degree of freedom in selecting the material and shape of the additional structure 36 is ensured.
- the additional structure may be formed by combining these various techniques including electroforming, etching, thermal spraying, and vacuum deposition. Further, by using such a film forming technique, it is possible to form an additional structure with a laminated structure of different materials by performing electroforming a plurality of times, for example.
- a linear body that is a continuous linear shape in the length direction of the balloon as described above, a spiral linear tubular body such as a coil spring, and a circumferential direction with respect to each other.
- the mesh-like cylindrical body having a structure in which a plurality of spiral linear shapes inclined to the opposite side are integrated at the intersections, for example, the circumferential direction is repeated in a wavy shape
- the additional structure 36 is provided on the inner peripheral surface of the balloon 14.
- such an additional structure may be used instead of or in addition to the inner peripheral surface of the balloon 14. It can also be formed on the outer peripheral surface.
- the additional structure 36 By forming the additional structure 36 on the outer peripheral surface of the balloon 14, the expansion deformation of the balloon 14 acts in a direction in which the balloon 14 is pressed against the additional structure. Therefore, the effect of improving the pressure resistance performance of the balloon by the additional structure.
- the additional structure can be more stably held in a fixed state with respect to the balloon.
- the balloon 14 when forming the additional structure on the surface of the balloon 14, the balloon 14 may be appropriately cooled in consideration of the formation method and material used.
- the ambient temperature is controlled by cooling, and for example, cooling is performed by fluidly contacting a cooling fluid flowing in a circulation or convection on the outer peripheral surface or the inner peripheral surface of the balloon 14 opposite to the formation surface of the additional structure. It is also possible to do so.
- a linear body that extends independently in parallel to the axial direction or inclined by a predetermined angle can be adopted.
- One or a plurality of the shaped bodies may be arranged on the inner peripheral surface or outer peripheral surface of the balloon 14.
- an additional structure 80 made of a linear body extending linearly in parallel with the axial direction on the outer peripheral surface of the balloon 14 can be provided.
- the additional structure 80 is formed so as to protrude from the outer peripheral surface 82 of the balloon 14 to form a blade.
- Such an additional structure 80 can also be formed directly on the outer peripheral surface 82 of the balloon 14 by electroforming or the like, as in the above embodiment.
- the additional structure 80 can be provided as a blade protruding on the outer peripheral surface of the balloon 14, and the reinforcing effect of the balloon 14 can be obtained by the additional structure 80. At the same time, it can be configured as a cutting balloon. Note that each additional structure 80 extending in the axial direction may be inclined by a predetermined angle in the circumferential direction, or may have a saw blade-like unevenness at the protruding tip, and a plurality of additional structures 80. It is also possible to provide an annular connecting portion extending in the circumferential direction by connecting the two to each other.
- the additional structure having a predetermined pattern in various shapes such as a mesh shape and a linear shape may be formed on one surface or both surfaces regardless of the outer peripheral surface and the inner peripheral surface of the balloon.
- a rapid exchange type catheter in which the proximal end side of the guide wire lumen 30 opens to the outer peripheral surface of the catheter 12 is employed, but the proximal end side of the guide wire lumen is near the outer shaft 20.
- An over-the-wire type catheter that opens to the outside through a hub 16 provided on the distal end side may be employed.
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Animal Behavior & Ethology (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- Hematology (AREA)
- Anesthesiology (AREA)
- Biophysics (AREA)
- Child & Adolescent Psychology (AREA)
- Vascular Medicine (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Manufacturing & Machinery (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
Description
Claims (8)
- シャフトの遠位端側にバルーンが設けられたバルーンカテーテルにおいて、
前記バルーンの内周面と外周面の少なくとも一方の面上で直接に形成されることによって所定パターンの付加構造体が設けられていることを特徴とするバルーンカテーテル。 - 前記付加構造体が、該バルーンの内周面に形成されている請求項1に記載のバルーンカテーテル。
- 前記付加構造体が、溶射と真空蒸着の少なくとも一方によって形成されている請求項1又は2に記載のバルーンカテーテル。
- 前記付加構造体が、電鋳とエッチングの少なくとも一方によって形成されている請求項1又は2に記載のバルーンカテーテル。
- 前記付加構造体が、前記バルーンの周方向に連続した筒状のメッシュ形状とされている請求項1~4の何れか1項に記載のバルーンカテーテル。
- 前記付加構造体が、前記バルーンの長さ方向に連続した線形状とされている請求項1~5の何れか1項に記載のバルーンカテーテル。
- 前記付加構造体が、前記バルーンの拡縮に伴って変形可能とされている請求項1~6の何れか1項に記載のバルーンカテーテル。
- 前記付加構造体が、前記バルーンの面上に固着されている請求項1~7の何れか1項に記載のバルーンカテーテル。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16796388.3A EP3295989B1 (en) | 2015-05-15 | 2016-05-12 | Balloon catheter |
US15/554,725 US20180043141A1 (en) | 2015-05-15 | 2016-05-12 | Balloon catheter |
JP2017519163A JPWO2016185995A1 (ja) | 2015-05-15 | 2016-05-12 | バルーンカテーテル |
CN201680008115.2A CN107206218B (zh) | 2015-05-15 | 2016-05-12 | 球囊导管 |
US16/793,164 US11697004B2 (en) | 2015-05-15 | 2020-02-18 | Method of manufacturing a balloon catheter |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2015-099712 | 2015-05-15 | ||
JP2015099712 | 2015-05-15 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/554,725 A-371-Of-International US20180043141A1 (en) | 2015-05-15 | 2016-05-12 | Balloon catheter |
US16/793,164 Continuation US11697004B2 (en) | 2015-05-15 | 2020-02-18 | Method of manufacturing a balloon catheter |
Publications (1)
Publication Number | Publication Date |
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WO2016185995A1 true WO2016185995A1 (ja) | 2016-11-24 |
Family
ID=57319990
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2016/064121 WO2016185995A1 (ja) | 2015-05-15 | 2016-05-12 | バルーンカテーテル |
Country Status (5)
Country | Link |
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US (2) | US20180043141A1 (ja) |
EP (1) | EP3295989B1 (ja) |
JP (2) | JPWO2016185995A1 (ja) |
CN (1) | CN107206218B (ja) |
WO (1) | WO2016185995A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2020526370A (ja) * | 2018-05-18 | 2020-08-31 | ディーケー メディカル テクノロジー カンパニー, リミテッドDk Medical Technology Co., Ltd. | カッティングバルーン及びバルーンカテーテル |
JP2021097853A (ja) * | 2019-12-20 | 2021-07-01 | 株式会社カネカ | バルーンカテーテル |
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CN109893215B (zh) * | 2017-12-11 | 2022-10-04 | 先健科技(深圳)有限公司 | 切割球囊导管 |
CN108294800B (zh) * | 2018-01-30 | 2019-11-19 | 牛铁生 | 一种球囊 |
CN108355230B (zh) * | 2018-03-09 | 2024-04-26 | 鼎科医疗技术(苏州)有限公司 | 多导丝药物球囊扩张导管及其使用方法 |
CN112203712B (zh) | 2018-07-09 | 2023-11-07 | 株式会社戈德曼 | 球囊导管 |
WO2020012850A1 (ja) * | 2018-07-09 | 2020-01-16 | 株式会社グッドマン | バルーンカテーテル |
US20210138205A1 (en) * | 2019-11-12 | 2021-05-13 | Microvention, Inc. | Balloon Catheter With Enhanced Characteristics |
CN113648516B (zh) * | 2020-05-12 | 2024-04-02 | 先健科技(深圳)有限公司 | 球囊导管及取栓装置 |
CN111588970B (zh) * | 2020-05-29 | 2022-09-16 | 成都赛拉诺医疗科技有限公司 | 扩张球囊装置及扩张球囊装置的制作方法 |
CN114504723A (zh) * | 2021-12-22 | 2022-05-17 | 融冲(深圳)生物医疗科技有限责任公司 | 聚合物球囊及其制备方法 |
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- 2016-05-12 US US15/554,725 patent/US20180043141A1/en not_active Abandoned
- 2016-05-12 WO PCT/JP2016/064121 patent/WO2016185995A1/ja active Application Filing
- 2016-05-12 CN CN201680008115.2A patent/CN107206218B/zh active Active
- 2016-05-12 JP JP2017519163A patent/JPWO2016185995A1/ja active Pending
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2020
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2021
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JP2021097853A (ja) * | 2019-12-20 | 2021-07-01 | 株式会社カネカ | バルーンカテーテル |
JP7410706B2 (ja) | 2019-12-20 | 2024-01-10 | 株式会社カネカ | バルーンカテーテル |
Also Published As
Publication number | Publication date |
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EP3295989B1 (en) | 2021-12-08 |
US11697004B2 (en) | 2023-07-11 |
US20180043141A1 (en) | 2018-02-15 |
CN107206218A (zh) | 2017-09-26 |
US20200179662A1 (en) | 2020-06-11 |
EP3295989A1 (en) | 2018-03-21 |
JP7041858B2 (ja) | 2022-03-25 |
JP2021104449A (ja) | 2021-07-26 |
CN107206218B (zh) | 2021-06-25 |
EP3295989A4 (en) | 2019-01-02 |
JPWO2016185995A1 (ja) | 2018-03-01 |
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