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WO2005113049A1 - Systemes et procedes de liaison laser de composants de catheter - Google Patents

Systemes et procedes de liaison laser de composants de catheter Download PDF

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Publication number
WO2005113049A1
WO2005113049A1 PCT/US2005/019247 US2005019247W WO2005113049A1 WO 2005113049 A1 WO2005113049 A1 WO 2005113049A1 US 2005019247 W US2005019247 W US 2005019247W WO 2005113049 A1 WO2005113049 A1 WO 2005113049A1
Authority
WO
WIPO (PCT)
Prior art keywords
laser
catheter
components
catheter components
pressure chamber
Prior art date
Application number
PCT/US2005/019247
Other languages
English (en)
Inventor
Fugui He
Scott B. Sidwell
Thomas N. Trotta
Original Assignee
Cordis Corporation
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 Cordis Corporation filed Critical Cordis Corporation
Priority to US11/597,114 priority Critical patent/US20080135170A1/en
Publication of WO2005113049A1 publication Critical patent/WO2005113049A1/fr

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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
    • A61M25/0009—Making of catheters or other medical or surgical tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1664—Laser beams characterised by the way of heating the interface making use of several radiators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1664—Laser beams characterised by the way of heating the interface making use of several radiators
    • B29C65/1667—Laser beams characterised by the way of heating the interface making use of several radiators at the same time, i.e. simultaneous laser welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1687—Laser beams making use of light guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/345—Progressively making the joint, e.g. starting from the middle
    • B29C66/3452—Making complete joints by combining partial joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5324—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length
    • B29C66/53241—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being tubular and said substantially annular single elements being of finite length relative to the infinite length of said tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/63—Internally supporting the article during joining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8126—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/81266—Optical properties, e.g. transparency, reflectivity
    • B29C66/81267—Transparent to electromagnetic radiation, e.g. to visible light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81455—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps being a fluid inflatable bag or bladder, a diaphragm or a vacuum bag for applying isostatic pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1635—Laser beams characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. laser transmission welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1674—Laser beams characterised by the way of heating the interface making use of laser diodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1677—Laser beams making use of an absorber or impact modifier
    • B29C65/1683—Laser beams making use of an absorber or impact modifier coated on the article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/65—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles with a relative motion between the article and the welding tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8122—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2883/00—Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as mould material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
    • B29K2995/0026—Transparent
    • B29K2995/0027—Transparent for light outside the visible spectrum
    • 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
    • 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 relates generally to medical devices, and more particularly to laser bonding of medical catheter components.
  • catheters and catheter systems of various kinds.
  • catheters include balloon catheters, diagnostic catheters, guiding catheters, stent delivery system catheters, injection catheters, gene therapy catheters, electrophysiology catheters, therapeutic drug delivery catheters, ultrasound catheters, laser angioplasty catheters, etc.
  • the components of medical catheters are often made of materials including polymers or plastics. Such polymer materials may be selected to have acceptable properties, including biocompatibility, pull strength, longitudinal or column strength, and bending flexibility. Some of the polymer materials may include polyamides, polyurethanes, nylons, polyethylenes, including high-density polyethylene (HDPE), polyether block amide (PEBA) which is available as Pebax®, polyester (PET) or polyetheretherketone (PEEK). Also, any of the catheter components may be made of a coextrusion or a blend or a block copolymer of such polymer materials. [0007] Some medical catheters include polymer components that are affixed together.
  • HDPE high-density polyethylene
  • PEBA polyether block amide
  • PET polyester
  • PEEK polyetheretherketone
  • any of the catheter components may be made of a coextrusion or a blend or a block copolymer of such polymer materials.
  • Some medical catheters include polymer
  • the desirable properties of such a joint, seal or bond between components may include its strength, and its ability to hold high fluid pressures or to exhibit high pull strength. It is desirable to provide systems and methods for laser bonding catheter components effectively and efficiently.
  • An additional desirable feature of catheter component bonding techniques may include minimizing heating during formation of the bond, so as to minimize any adverse impact on flexibility which may occur during bonding.
  • Another desirable feature may include creating a bond having as small a size as possible.
  • the polymer materials of all catheter components to be laser bonded must be made of material having laser energy absorption curves that reach a sufficiently high absorption level at a common specific wavelength of the laser energy.
  • the catheter components meeting these material requirements are placed in contact with each other, and a laser emitting energy at the common or overlapping wavelength is directed at the location where a bond is desired.
  • This requirement of an overlapping common wavelength for high absorption in all of the components to be bonded necessarily limits the types and varieties of materials that can be selected for a particular catheter.
  • the entirety of each component is heated at the location where the laser energy is directed.
  • the entire thickness of the components is heated at the region where the laser energy is directed.
  • tubular component(s) In the particular example of bonding together tubular component(s), with at least a portion of one component surrounding the other component, it is desirable to provide compression around the outer component during laser bonding. This compression encourages good contact between the components so the laser energy will form a strong bond. Accordingly, the compressive force is preferably uniform, and located at the site of the bond. Such compression may be applied by object(s) that are substantially transparent to the laser energy, which allow the laser beam to pass through without substantial resistance or heating.
  • high absorption and low absorption refer to relative absorption of laser energy. They may be understood in terms of the percentage transmission of laser energy through a particular material, such that “high absorption” may refer to less than 50% transmission, and “low absorption” may refer to more than 50% transmission. As a matter of preference when selecting a material, a material may be selected for "high absorption” if it exhibits less than 25% transmission, and a material may be selected for "low absorption” if it exhibits greater than 75% transmission of laser energy.
  • the present invention will be described in relation to a balloon catheter and methods of bonding a balloon component to one or more catheter shaft components.
  • the present invention relates to any catheter or methods for bonding catheter components having the features recited in any one of the following claims, and is not limited to any particular treatment or type of catheter, or catheter construction, or the particular example embodiments described below.
  • Additional examples of different types of catheters may include balloon catheters, diagnostic catheters, guiding catheters, stent delivery system catheters, injection catheters, gene therapy catheters, electrophysiology catheters, therapeutic drug delivery catheters, ultrasound catheters, laser angioplasty catheters, etc.
  • the laser bonding systems and methods of the present invention may be used with or applied to any suitable type of catheter or catheter components.
  • Figure 1 is a partial cross-section view of an example system for laser bonding catheter components
  • Figure 2 is an expanded cross-section view of the example system for laser bonding catheter components of Figure 1
  • Figure 3 is a diagrammatic view of another example system for laser bonding catheter components
  • Figure 4 is a diagrammatic view of the example system for laser bonding catheter components of Figure 3
  • Figures 5 and 6 are perspective views of medical catheters having components bonded together by a laser system.
  • a system 10 for laser bonding two or more catheter components is depicted in the drawings.
  • the system 10 includes a laser generator 12, an optical fiber 14 or other element for transmitting the laser energy, and one or more emitters 1 for emitting the laser energy directed toward the catheter components to be bonded.
  • a laser beam 18 is indicated with dashed lines.
  • the system 10 may also include a mandrel 20 for supporting the catheter components.
  • a pressure chamber is defined by a tubular outer wall 22, a first and second end assembly 24 and 26, and a flexible compression tube 28. Together, the outer wall 22, first and second end assembly 24 and 26, and flexible compression tube 28 define an annular space 30. Annular space 30 can be selectively pressurized by a source of pressurized fluid communicating with the annular space 30 through passage 32.
  • the outer wall 22 and compression tube 28 are both made of materials that will allow laser energy to be transmitted to catheter components with very little resistance. In other words, they have very low absorption of laser energy at the selected wavelength(s), and consequently a very high percentage transmission of the laser energy. They may be made of any suitable material having such low absorption.
  • the outer wall 22 may be made of glass
  • the compression tube 28 may be made of any suitable polymer, such as for example silicone. may also be any suitable fluid, which also has very low absorption of the laser energy, which may for example be air.
  • a balloon catheter having a catheter shaft that includes a tubular inner body 34, and a balloon 36 having a balloon distal leg 38.
  • the laser bonding system 10 is being used to bond the balloon distal leg 38 to the inner body 34.
  • the first end assembly of the pressure chamber defines an aperture 40 for receiving the catheter components that are to be laser bonded.
  • the systems and the methods of the present invention may be used to laser bond any two or more catheter components, and is not limited to the particular types of catheter components shown in the drawings.
  • One example method of laser bonding using the system shown in Figure 1 is as follows: providing a laser system 10 including a pressure chamber with a flexible compression sleeve 28, mandrel 20 is inserted within a lumen or passage defined by the inner body 34, and they are inserted into the balloon 36, such that balloon distal leg 38 is aligned with the portion of the inner body 34 where the bond is to be formed. The resulting assembly is inserted into the aperture 40 defined by the first end assembly, so that the laser emitter(s) are directed toward the selected bonding site. The pressure source pressurizes the annular space of the pressure chamber, thereby causing the flexible compression tube to flex radially inward and impose a compressive force on the balloon distal leg 38 and inner body 34.
  • the laser system 10 is energized, to cause a laser beam(s) 18 to exit the emitter(s) 16, and to pass through the outer wall 22 and the compression tube 28 with low absorption and without substantially generating heat, and then generating heat to form a thermal fusion bond of the balloon distal leg 38 and inner body 34 at the desired bonding site.
  • the laser system 10 is deactivated and the pressure is relieved, thereby relieving the compressive force of the compression sleeve 28.
  • the catheter components are then removed from the aperture 40, and the process may be repeated with a new set of catheter components.
  • laser systems may be used.
  • only one laser emitter may be provided, in which case the emitter may move around the catheter components or the catheter components may be moved or rotated under the laser beam.
  • FIG. 3 and 4 Another example of a laser system is shown in Figures 3 and 4, having multiple emitters.
  • the emitters may be arranged to generate an overlapping pattern of laser beams, as shown in Figure 4.
  • the angle between adjacent laser emitters may be 22.5 degrees, such that the laser beams overlap a catheter component subassembly such that any point in the heating area may simultaneously receive laser energy from three laser emitters.
  • Additional types of laser systems may include (i) a laser system having a single wavelength which exhibits high absorption in the material of an inner catheter component, or in the materials of all the catheter components; (ii) a laser system having a single wavelength which exhibits high absorption of a color of one or more of the catheter component(s), or of an ink or other colorant applied to one or more of the catheter component(s); or (iii) a laser system having at least one emitter which emit at least one wavelength, each selected to have high absorption of one of the catheter components, which wavelengths need not overlap.
  • the materials may thus be selected freely, without regard to whether they have high absorption in a single wavelength.
  • Diode lasers are preferred for the laser bonding systems and methods of the present invention because their operating wavelengths are within the low energy absorption range (and high percentage transmission range) of most plastics and polymers.
  • the flexible compression tube offers a repeatable source of uniform compression, which releasably enables easy removal of the catheter components from the laser bonding system, without a one-time piece of shrink tube that must be discarded with each bonding process. Also, the compression force and laser heating energy are independent, allowing them to be individually optimized.
  • Figures 5 and 6 show catheters having components bonded together by a laser system' according to the present invention, including a balloon catheter 42 having an "over- the-wire” arrangement and a balloon catheter 44 having a "rapid exchange” configuration.

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  • Engineering & Computer Science (AREA)
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  • Electromagnetism (AREA)
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  • Life Sciences & Earth Sciences (AREA)
  • Anesthesiology (AREA)
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  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

Il est prévu des systèmes et des procédés pour liaison laser de composants de cathéter de polymère en utilisant l’énergie laser pour créer des liaisons par thermofusion localisées entre deux ou plusieurs composants de cathéter de polymère.
PCT/US2005/019247 2004-05-21 2005-05-21 Systemes et procedes de liaison laser de composants de catheter WO2005113049A1 (fr)

Priority Applications (1)

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US11/597,114 US20080135170A1 (en) 2004-05-21 2005-05-21 Systems and Methods for Laser Bonding Catheter Components

Applications Claiming Priority (2)

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US57358804P 2004-05-21 2004-05-21
US60/573,588 2004-05-21

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007115803A3 (fr) * 2006-04-06 2007-11-22 Fresenius Medical Care De Gmbh Procédé de soudage laser par transmission destiné à la connexion de corps moulés en plastique
EP2159037A1 (fr) 2008-08-28 2010-03-03 Leister Process Technologies Elément de raccordement ou de séparation destiné au raccordement à une section de tuyau par le procédé de rayonnement laser ainsi que tête laser et procédé de raccordement
WO2010069599A1 (fr) * 2008-12-19 2010-06-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Dispositif et procédé d'assemblage par faisceau laser
US7857786B2 (en) 2006-11-03 2010-12-28 Cook Incorporated Balloon catheter having improved balloon folding capability

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5501759A (en) * 1991-11-29 1996-03-26 Schneider (Usa) Inc. Laser bonding of angioplasty balloon catheters
US6596217B1 (en) * 1997-07-08 2003-07-22 Advanced Cardiovascular Systems, Inc. Fusion bonding of cathether components
US6764710B2 (en) * 2001-07-18 2004-07-20 Scimed Life Systems, Inc. Light emitting markers for use with substrates

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5501759A (en) * 1991-11-29 1996-03-26 Schneider (Usa) Inc. Laser bonding of angioplasty balloon catheters
US6596217B1 (en) * 1997-07-08 2003-07-22 Advanced Cardiovascular Systems, Inc. Fusion bonding of cathether components
US6764710B2 (en) * 2001-07-18 2004-07-20 Scimed Life Systems, Inc. Light emitting markers for use with substrates

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007115803A3 (fr) * 2006-04-06 2007-11-22 Fresenius Medical Care De Gmbh Procédé de soudage laser par transmission destiné à la connexion de corps moulés en plastique
EP2444237A1 (fr) * 2006-04-06 2012-04-25 Fresenius Medical Care Deutschland GmbH Procédé de soudage laser par transmission pour la connexion de corps moulés en matière plastique
CN101415536B (zh) * 2006-04-06 2012-08-22 弗雷泽纽斯医疗保健德国有限公司 用于连接成形塑料体的激光透射焊接方法
US8778120B2 (en) 2006-04-06 2014-07-15 Fresenius Medical Care Deutschland Gmbh Transmission laser welding method for connecting shaped plastic bodies
US7857786B2 (en) 2006-11-03 2010-12-28 Cook Incorporated Balloon catheter having improved balloon folding capability
EP2159037A1 (fr) 2008-08-28 2010-03-03 Leister Process Technologies Elément de raccordement ou de séparation destiné au raccordement à une section de tuyau par le procédé de rayonnement laser ainsi que tête laser et procédé de raccordement
WO2010022886A1 (fr) * 2008-08-28 2010-03-04 Leister Process Technologies Tête laser et procédé pour assembler des pièces tubulaires par soudage laser par transparence
US8505604B2 (en) 2008-08-28 2013-08-13 Leister Technologies Ag Laser head and method of connecting tubular parts by the laser transmission method
WO2010069599A1 (fr) * 2008-12-19 2010-06-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Dispositif et procédé d'assemblage par faisceau laser

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