CA2482615C - Method for connecting a catheter balloon with a catheter shaft of a balloon catheter - Google Patents

Method for connecting a catheter balloon with a catheter shaft of a balloon catheter Download PDF

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Publication number
CA2482615C
CA2482615C CA2482615A CA2482615A CA2482615C CA 2482615 C CA2482615 C CA 2482615C CA 2482615 A CA2482615 A CA 2482615A CA 2482615 A CA2482615 A CA 2482615A CA 2482615 C CA2482615 C CA 2482615C
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CA
Canada
Prior art keywords
catheter
welding
balloon
fixation
absorbing device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CA2482615A
Other languages
French (fr)
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CA2482615A1 (en
Inventor
Bodo Quint
Stevan Nielsen
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Abbott Laboratories Vascular Enterprises Ltd
Original Assignee
Abbott Laboratories Vascular Enterprises Ltd
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Filing date
Publication date
Application filed by Abbott Laboratories Vascular Enterprises Ltd filed Critical Abbott Laboratories Vascular Enterprises Ltd
Priority to CA2482615A priority Critical patent/CA2482615C/en
Publication of CA2482615A1 publication Critical patent/CA2482615A1/en
Application granted granted Critical
Publication of CA2482615C publication Critical patent/CA2482615C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A61M25/10—Balloon catheters
    • A61M25/1027—Making of balloon catheters
    • A61M25/1034—Joining of shaft and balloon
    • 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
    • A61M25/0014—Connecting a tube to a hub
    • 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
    • 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
    • B29C65/1429—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 characterised by the way of heating the interface
    • B29C65/1435—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 characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. transmission welding
    • B29C65/1441—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 characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. transmission welding making use of a reflector on the opposite side, e.g. a polished mandrel or a mirror
    • 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
    • B29C65/1429—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 characterised by the way of heating the interface
    • B29C65/1445—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 characterised by the way of heating the interface heating both sides of the joint
    • 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
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/245—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool the heat transfer being achieved contactless, e.g. by radiation
    • 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
    • B29C65/66—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by liberation of internal stresses, e.g. shrinking of one of the parts to be joined
    • B29C65/68—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by liberation of internal stresses, e.g. shrinking of one of the parts to be joined using auxiliary shrinkable elements
    • 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
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7855—Provisory fixing
    • 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
    • B29C66/50—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
    • B29C66/51—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
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
    • 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
    • B29C66/61—Joining from or joining on the inside
    • B29C66/612—Making circumferential 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
    • B29C66/63—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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B29C2791/009—Using laser
    • 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
    • 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

Abstract

To improve the welding quality of a weld between a catheter balloon (1) and a catheter shaft (2) of a balloon catheter (3) it is suggested according to the invention to arrange a welding energy absorbing device (5, 5'), preferably in the form of a coloured tubing, in the area of a fixation site (V) after attaching a pre-fixation (4) and then to irradiate this welding energy absorbing device (5, 5') with the radiation energy (L) to carry out the welding. After the welding the pre-fixation (4) and the welding energy absorbing device (5, 5') are removed.

Description

2 Method for Connecting a Catheter Balloon rnrith a Catheter Shaft of a Balloon Catheter Description The invention relates to a method for connecting a catheter balloon with a catheter shaft of a balloon catheter according to claim 1.
In a known method this connection is carried out by local welding, fox example by means of laser welding: This local welding requires locating the light beam on the connection site_ In order to do so, for carrying out the known method the machine has to be adjusted exactly or the welding site has to be positioned exactly, respectively. However, this adjustment is very complicated, prone to errors and often requires manual correction of the apparatus. In addition to that, laser welding involves the problem that the total technical effort is very high and that examinations carried out in the context of the invention have shown that poor uniformity of the weld is often the result. In addition to that, in this method the material must be adapted to the radiation source.
It is thus the object of the present invention to provide a method for connecting a catheter balloon with a catheter shaft of a balloon catheter the technical effort of which is lower and the welding results of which are improved compared to prior art..
This object i.s achieved by the features of claim 1.
One advantage of the method according to the invention is that any desired materials may be used for the catheter balloon and the catheter shaft or catheter tube, respectively, since an adaptation to the radiation source to be used may be carried out by the welding energy absorbing device. During assembly the welding energy absorbing device defines the exact position at which welding is carried out afterwards or energy is injected, respectively. Consequently, no complex machine
3 adjustment has to be carried out, since the required localization of the light beam is achieved by this external welding energy absorbing device which may be arranged exactly in the area of the desired weld in the area of the fixation site. A higher degree of automatian of the welding apparatus is thus possible, involving at the same time higher accuracy and thus higher quality of the weld.
In addition to this, a distinction may be made between energy injection and fixation or sealing, respectively, of the welding site in the given arrangement, which makes an intensive flow of material possible. A displacement of material during the welding process and/or an intensive mixture of material are thus possible.
Furthermore, another advantage is that the method according to the invention is independent of the energy source, so that a variety of different radiation sources may be used.
The subclaims include advantageous developments of the invention.
As a particularly simple pre-fixation a heat shrink tubing can be used, which is applied to the pre-fixation site and is capable of fixing and sealing the fastening portion to be welded with the catheter shaft.
There are also several embodiments of welding energy absorbing devices possible. A particularly simple embodiment is a coloured tubing which may be applied via the pre-fixation exactly to the site at which the welding between balloon catheter and catheter shaft is to be carried out. In a further embodiment the pre-fixation is already locally coloured and thus serves both as pre-fixation and welding energy absorbing device. In addition to this, a coloured marking on the pre-
4 fixation, for example a marking with- a felt-tip pencil {Edding), can serve as welding energy absorbing device.
An alternative is a stiletto which may be inserted into the catheter shaft'. On the stiletto a coloured area may be attached which may be positioned exactly at the site where the welding is desired. In this case, the welding is carried out "from within".
As has been explained above, a variety of different radiation sources are possible, such as laser sources, monochromatic or polychromatic light sources or other electromagnetic radiation sources. In this context it is important to bear in mind that the welding substrate and the focussing device have to differ in their absorption behaviour to a high degree.
Further details, features and advantages of the invention result from the following description and from the drawing, wherein:
Fig. 1 is a schematically considerably simplified representation of a balloon catheter to explain a first embodiment of the inventive method, and Fig. 2 is a representation of the balloon catheter corresponding to Fig. 1 to explain a second embodiment of the inventive method.
In Fig. 1 the proximal area of a balloon catheter 3 is shown.
In this area a catheter balloon 1 is to be fastened on a catheter shaft 2 at two fixation sites V or V' , respectively, via fastening portions 8 or 8', respectively. In order to explain the inventive method reference is made below to the schematically considerably simplified representation of the area of the fixation site V, the principles of which may also be used at the site V'.

S
In Fig. 1 an embodiment of the inventive method is shown, in which a pre-fixation 4, in this case in the form of a heat shrink tubing, is applied at the beginning, which fastens/connects the fastening portion 8 on the desired area of the catheter shaft 2. In the embodiment shown in Fig_ 1 a coloured tubing 5 is then applied to the pre-fixation 4, which constitutes a welding energy absorbing device whose absorption is adapted to the light source whose course of beam is symbolised by the wavy arrow L.
After arrangement of the pre-fixation 4 and tubing 5, the fixation site V is irradiated with homogenous radiation. This results in welding of the fastening portion 8 of the catheter balloon 1 with the desired portion of the catheter tubing 2.
The advantage of this method is that the assembly of the welding energy absorbing device already defines the localization of the welding site. The welding is carried out in an automated manner in a homogenously excited area without precise requirements with regard to the position of weld metal. In doing so, the irradiated area may also be considerably larger than the welding site itself.
After the welding has been carried out both the welding energy absorbing device and the pre-fixation 4 are removed.
In Fig. 2 an alternative embodiment is shown in which in the area of the fixation site V a stiletto 6 having a coloured area 7 is inserted into the catheter shaft 2 on the distal side for welding with the fastening portion 9 of the catheter tubing 1 or with the fastening portion 9', respectively. In this embodiment the stiletto 6 and the coloured area 7 form the welding energy absorbing device 5'.
After pre-fixation, for example by means of a heat shrink tubing 4 according to the embodiment of Fig. l, another irradiation with the help of the radiation source L may be carried out, so that the welding explained above in connection with the method according to Fig. 1 by injection of the radiation energy is achieved exactly in the area of the desired site of connection.
It should also be noted that the weld metal or the light source has to be turned during the welding process or the light source has to be ring-shaped. The pre-fixation or the heat shrink tubing, respectively, also serves as welding protection tube to ensure an even distribution of heat.

Claims (8)

Claims
1. A method for connecting a catheter balloon (1) with a catheter shaft (2) of a balloon catheter (3) comprising the following steps:
- arranging the balloon (1) on the catheter shaft (2);
- attaching a pre-fixation (4) for temporary fastening of the balloon (1) to the desired fixation site (V) of the catheter shaft (2);
- arranging a welding energy absorbing device (5, 5') in the area of the fixation site (V) of the balloon (1) on the catheter shaft (2);
- irradiating the welding energy absorbing device (5, 5') with radiation energy (L); and - removing the pre-fixation (4) and the welding energy absorbing device (5, 5') after welding the balloon with the catheter shaft (2).
2. A method according to claim 1, characterised in that the welding energy absorbing device (5, 5') is already integrated in the pre-fixation (4).
3. A method according to claim 1 or 2, characterised in that a heat shrink tubing is applied on the fixation site (V, V') as pre-fixation (4).
4. A method according to any of the claims 1, 2 or 3, characterised in that the welding energy absorbing device (5, 5') has a coloured area (7).
5. A method according to any of the claims 1, 3 or 4, characterised in that a coloured tubing is applied on the pre-fixation (4} as welding energy absorbing device (5).
6. A method according to any of the claims 1, 3 or 4, characterised in that a stiletto (6) having a coloured area (7) is positioned into the catheter shaft (2) in the area of the desired fixation site (V) as welding energy absorbing device (5').
7. A method according to any of the claims 1 to 6, characterised in that laser light, monochromatic light, polychromatic light or an electromagnetic radiation source is used as light or radiation source (L), respectively.
8. A method according to any of the claims 1 to 7, characterised in that the radiation energy (L) has an at least almost homogenous distribution.
CA2482615A 2004-09-27 2004-09-27 Method for connecting a catheter balloon with a catheter shaft of a balloon catheter Expired - Fee Related CA2482615C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2482615A CA2482615C (en) 2004-09-27 2004-09-27 Method for connecting a catheter balloon with a catheter shaft of a balloon catheter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA2482615A CA2482615C (en) 2004-09-27 2004-09-27 Method for connecting a catheter balloon with a catheter shaft of a balloon catheter

Publications (2)

Publication Number Publication Date
CA2482615A1 CA2482615A1 (en) 2006-03-27
CA2482615C true CA2482615C (en) 2010-11-16

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CA2482615A Expired - Fee Related CA2482615C (en) 2004-09-27 2004-09-27 Method for connecting a catheter balloon with a catheter shaft of a balloon catheter

Country Status (1)

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CA (1) CA2482615C (en)

Also Published As

Publication number Publication date
CA2482615A1 (en) 2006-03-27

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