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WO1996031174B1 - Pull back stent delivery system - Google Patents

Pull back stent delivery system

Info

Publication number
WO1996031174B1
WO1996031174B1 PCT/US1996/004744 US9604744W WO9631174B1 WO 1996031174 B1 WO1996031174 B1 WO 1996031174B1 US 9604744 W US9604744 W US 9604744W WO 9631174 B1 WO9631174 B1 WO 9631174B1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
medical device
pull back
inner shaft
middle pull
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.)
Ceased
Application number
PCT/US1996/004744
Other languages
French (fr)
Other versions
WO1996031174A1 (en
Filing date
Publication date
Priority claimed from US08/417,385 external-priority patent/US5571168A/en
Application filed filed Critical
Priority to JP8530521A priority Critical patent/JPH11503054A/en
Priority to CA002216952A priority patent/CA2216952C/en
Priority to EP96912594A priority patent/EP0821574B1/en
Priority to DE69613572T priority patent/DE69613572T2/en
Priority to AT96912594T priority patent/ATE202464T1/en
Publication of WO1996031174A1 publication Critical patent/WO1996031174A1/en
Publication of WO1996031174B1 publication Critical patent/WO1996031174B1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Abstract

A delivery system (30) for implantation of a medical device in a vessel which has three concentric shafts (32, 34, 36), an inner shaft (36) for carrying a medical device (38), a middle pull back shaft (34) and an outer stiffening shaft (32). The inner and outer shafts are connected together at the proximal end (40) of the delivery system to preclude the inner shaft from moving axially relative to the outer shaft as the middle pull back shaft is retracted. This allows for accurate placement of the medical device.

Claims

AMENDED CLAIMS [received by the International Bureau on 9 October 1996 (09.10.96); original claims 1 and 5 amended; new claim 6 added; remaining claims unchanged (2 pages)]
1. A delivery system for implantation of a medical device in a vessel, comprising:
a medical device; and
elongate flexible catheter means having proximal and distal ends for delivering a medical device to a predetermined location in a vessel of a patient, the elongate flexible catheter means being further comprised of:
an inner shaft which carries the medical device near its distal end, a middle pull back shaft concentrically arranged around the inner shaft, the medical device being carried between the inner shaft and middle pull back shaft, and
an outer stiffening shaft concentrically arranged around the middle pull back shaft, the inner and outer shafts being connected at their proximal ends to prevent axial movement of the inner shaft with respect to the outer shaft,
whereby the medical device is delivered at the desired site by pulling on the proximal end of the middle pull back shaft, which deploys the medical device, and where the outer stiffening shaft connection to the inner shaft prevents axial movement of the inner shaft with respect to the outer stiffening shaft, thereby preventing the distal end of the inner shaft from being urged forward during delivery and therefore allowing for more accurate placement of the medical device.
2. The delivery system of claim 1 wherein the inner and outer shafts are connected together far enough apart to allow the middle pull back shaft to retract a distance at leasi as great as the axial length of the medical device to be delivered.
3. The delivery system of claim 1 wherein the inner shaft provides a lumen for a guide wire,
4. The delivery system of claim I wherein the medical device is a belf-expanding stem.
5. A method of delivering a medical device using the delivery system of claim 1, comprising the steps of:
providing die delivery system of claim 1;
moving the distal end of the elongate flexible catheter means to a delivery site; and delivering the medical device by pulling back on the middle pull back shaft which releases the medical device,
whereby the outer stiffening shaft connection to the inner shaft prevents the distal end of the inner shaft from being urged forward as the middle pull back shaft is retracted, thereby allowing for more accurate placement of the medical device.
6. A delivery system for implantation of a medical device in a vessel, comprising:
an elongate flexible catheter means having proximal and distal ends for delivering a medical device to a predetermined location in a vessel of a patient, the elongate flexible catheter means being further comprised of:
an inner shaft;
a middle pull back shaft concentrically arranged around the inner shaft, whereby the medical device may be carried between the inner shaft and middle pull back shaft; and
an outer stiffening shaft concentrically arranged around the middle pull back shaft, the inner and outer shafts being connected to prevent axial movement of the inner shaft with respect to the outer shaft,
wherein the middle pull back shaft is retractable relative to the inner shaft and the stiffening shaft by pulling on the proximal end of the middle pull back shaft, and wherein the outer stiffening shaft connection to the inner shaft prevents axial movement of the inner shaft with respect to the outer stiffening shaft.
PCT/US1996/004744 1995-04-05 1996-04-05 Pull back stent delivery system Ceased WO1996031174A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP8530521A JPH11503054A (en) 1995-04-05 1996-04-05 Retraction stent introduction system
CA002216952A CA2216952C (en) 1995-04-05 1996-04-05 Pull back stent delivery system
EP96912594A EP0821574B1 (en) 1995-04-05 1996-04-05 Pull back stent delivery device
DE69613572T DE69613572T2 (en) 1995-04-05 1996-04-05 DEVICE FOR INSERTING A VASCULAR PROSTHESIS THAT RELEASES THIS PROSTHESIS BY WITHDRAWAL OF A TUBE
AT96912594T ATE202464T1 (en) 1995-04-05 1996-04-05 DEVICE FOR INSERTING A VASCULAR PROSTHESIS WHICH RELEASES THIS PROSTHESIS BY PULLING BACK A TUBE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/417,385 1995-04-05
US08/417,385 US5571168A (en) 1995-04-05 1995-04-05 Pull back stent delivery system

Publications (2)

Publication Number Publication Date
WO1996031174A1 WO1996031174A1 (en) 1996-10-10
WO1996031174B1 true WO1996031174B1 (en) 1996-11-21

Family

ID=23653817

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/004744 Ceased WO1996031174A1 (en) 1995-04-05 1996-04-05 Pull back stent delivery system

Country Status (7)

Country Link
US (2) US5571168A (en)
EP (1) EP0821574B1 (en)
JP (1) JPH11503054A (en)
AT (1) ATE202464T1 (en)
CA (1) CA2216952C (en)
DE (1) DE69613572T2 (en)
WO (1) WO1996031174A1 (en)

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US8974516B2 (en) 1999-02-01 2015-03-10 Board Of Regents, The University Of Texas System Plain woven stents

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