CA2452303A1 - Biaxially oriented multilayer polymer tube for medical devices - Google Patents

Biaxially oriented multilayer polymer tube for medical devices Download PDF

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Publication number
CA2452303A1
CA2452303A1 CA002452303A CA2452303A CA2452303A1 CA 2452303 A1 CA2452303 A1 CA 2452303A1 CA 002452303 A CA002452303 A CA 002452303A CA 2452303 A CA2452303 A CA 2452303A CA 2452303 A1 CA2452303 A1 CA 2452303A1
Authority
CA
Canada
Prior art keywords
tubular
medical device
polymer member
layer
rotating
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.)
Granted
Application number
CA002452303A
Other languages
French (fr)
Other versions
CA2452303C (en
Inventor
Lixiao Wang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Boston Scientific Ltd Bermuda
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2452303A1 publication Critical patent/CA2452303A1/en
Application granted granted Critical
Publication of CA2452303C publication Critical patent/CA2452303C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0009—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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/33—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles with parts rotatable relative to each other
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
    • B29C48/336—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging one by one down streams in the die
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0043—Catheters; Hollow probes characterised by structural features
    • A61M25/0045—Catheters; Hollow probes characterised by structural features multi-layered, e.g. coated
    • 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

Abstract

A tubular extruded member (10) particularly suitable for use in medical devices such as intravascular catheters and guide wires, wherein the extruded tubular member (10) includes multiple layers having biaxial helical orientation in different directions. A counter-rotation extrusion process may be used to orient the layers in different biaxial helical directions. The counter-rotation extrusion process provides orientation in two different circumferential directions in addition to a longitudinal directionl. By combining the dual direction or biaxial helical orientation with multiple layers, different layers of the tubular member may be tailored to have the desired mechanical properties.

Claims (18)

1. A medical device comprising an extruded tubular polymer member, the tubular polymer member having an inner tubular layer and an outer tubular layer, wherein the inner tubular layer has helical orientation in a first direction and the outer tubular layer has helical orientation in a second direction different from the first direction.
2. A medical device as in claim 1, wherein the tubular polymer member is made by an extrusion process including the step of extruding the polymer member through a rotating extrusion head over a counter-rotating mandrel.
3. A medical device as in claim 1, wherein the tubular polymer member is made by an extrusion process including the step of rotating the polymer member after passing through a counter-rotating extrusion head.
4. A medical device as in claim 1, wherein one of the inner and outer tubular layers is formed of a relatively flexible polymeric material and the other of the inner and outer tubular layers is formed of a relatively rigid polymeric material.
5. A medical device as in claim 1, wherein one of the inner and outer tubular layers is formed of continuous LCP fibers dispersed in a non-LCP polymer matrix.
6. A medical device as in claim 5, wherein the LCP content of the LCP
containing layer is between 0.1% and 90% by weight.
7. A medical device as in claim 5, wherein the LCP containing layer comprises 0.05% to 50% by weight of the combined layers.
8. A medical device comprising an extruded tubular polymer member formed of a relatively rigid polymeric tubular layer and a relatively flexible polymeric tubular layer, wherein the relatively rigid polymeric tubular layer has helical orientation in a first direction and the relatively flexible polymeric tubular layer has helical orientation in a second direction different from the first direction.
9. A medical device as in claim 8, wherein the helical orientation is formed by an extrusion process including the step of extruding the polymer member through a rotating extrusion head over a counter-rotating mandrel.
10. A medical device as in claim 8, wherein the helical orientation is formed by an extrusion process including the step of rotating the polymer member after passing through a counter-rotating extrusion head.
11. A medical device comprising an extruded tubular polymer member, the tubular polymer member comprising a first extruded tubular polymer layer and a second extruded tubular polymer layer, the first extruded tubular polymer layer including continuous LCP fibers dispersed in a non-LCP thermoplastic polymer matrix, wherein the first extruded polymer layer has helical orientation in a first direction and the second extruded polymer layer has helical orientation in a second direction different from the first direction.
12. A medical device as in claim 11, wherein the helical orientation is formed by an extrusion process including the step of extruding the polymer member through a rotating extrusion head over a counter-rotating mandrel.
13. A medical device as in claim 11, wherein the helical orientation is formed by an extrusion process including the step of rotating the polymer member after passing through a counter-rotating extrusion head.
14. A medical device as in claim 11, wherein the LCP content of the LCP
containing layer is between 0.1% and 90% by weight.
15. A medical device as in claim 11, wherein the LCP containing layer comprises 0.5% to 50% by weight of the combined layers.
16. A method of making a medical tubular polymer member by rotating the polymer member after passing through a counter-rotating extrusion head.
17. An intravascular catheter including a shaft comprising a tubular polymer member formed by the method of claim 16.
18. An intravascular catheter including an inflatable balloon comprising a tubular polymer member formed by the method of claim 16.
CA2452303A 2001-07-03 2002-05-01 Biaxially oriented multilayer polymer tube for medical devices Expired - Fee Related CA2452303C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/898,717 US20030009151A1 (en) 2001-07-03 2001-07-03 Biaxially oriented multilayer polymer tube for medical devices
US09/898,717 2001-07-03
PCT/US2002/014017 WO2003004248A1 (en) 2001-07-03 2002-05-01 Biaxially oriented multilayer polymer tube for medical devices

Publications (2)

Publication Number Publication Date
CA2452303A1 true CA2452303A1 (en) 2003-01-16
CA2452303C CA2452303C (en) 2011-03-15

Family

ID=25409940

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2452303A Expired - Fee Related CA2452303C (en) 2001-07-03 2002-05-01 Biaxially oriented multilayer polymer tube for medical devices

Country Status (5)

Country Link
US (2) US20030009151A1 (en)
EP (1) EP1401629A1 (en)
JP (1) JP4472331B2 (en)
CA (1) CA2452303C (en)
WO (1) WO2003004248A1 (en)

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Also Published As

Publication number Publication date
US20030009151A1 (en) 2003-01-09
US20030100869A1 (en) 2003-05-29
EP1401629A1 (en) 2004-03-31
US7128862B2 (en) 2006-10-31
JP4472331B2 (en) 2010-06-02
CA2452303C (en) 2011-03-15
JP2005519649A (en) 2005-07-07
WO2003004248A1 (en) 2003-01-16

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