WO2010127839A1 - Cathéter médical, système médical comportant un tel cathéter et dispositif de chargement pour la fabrication d'un tel cathéter - Google Patents

Cathéter médical, système médical comportant un tel cathéter et dispositif de chargement pour la fabrication d'un tel cathéter Download PDF

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Publication number
WO2010127839A1
WO2010127839A1 PCT/EP2010/002734 EP2010002734W WO2010127839A1 WO 2010127839 A1 WO2010127839 A1 WO 2010127839A1 EP 2010002734 W EP2010002734 W EP 2010002734W WO 2010127839 A1 WO2010127839 A1 WO 2010127839A1
Authority
WO
WIPO (PCT)
Prior art keywords
catheter
piston
line
functional element
displacement unit
Prior art date
Application number
PCT/EP2010/002734
Other languages
German (de)
English (en)
Inventor
Michael BÜCHERT
Original Assignee
Acandis Gmbh & Co. Kg
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 Acandis Gmbh & Co. Kg filed Critical Acandis Gmbh & Co. Kg
Priority to DE112010001321T priority Critical patent/DE112010001321A5/de
Publication of WO2010127839A1 publication Critical patent/WO2010127839A1/fr

Links

Classifications

    • 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
    • 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
    • A61F2/9517—Instruments specially adapted for placement or removal of stents or stent-grafts handle assemblies therefor
    • 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
    • A61F2/9522—Means for mounting a stent or stent-graft onto or into a placement instrument
    • 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
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
    • A61F2250/0069—Sealing means

Definitions

  • the flexible pressure column also ensures that, when the functional element is released, the catheter line does not stretch, ie forms an axial straight line, so that the risk of vascular trauma is reduced.
  • the pressure within the catheter line in particular within the pressure line, also reduces the risk of buckling.
  • the catheter according to the invention substantially retains its tube-like structure. The same essentially applies to the formation of wrinkles in the catheter wall.
  • the small number of components reduces the manufacturing costs and the complexity of the catheter.
  • the piston of the displacement unit allows the reduction of friction within the catheter, which occurs for example when using guide wires.
  • the functional element When the functional element is retracted, it is compressed by the outer edge of the catheter line and resumed in the catheter line.
  • the mobility of the functional element in different axial directions is achieved in this imple mentation form, that the proximal end of the functional element is connected to the distal end of the piston, that can be transmitted through the piston longitudinal forces in different directions of the catheter line to the functional element.
  • a force is exerted on the functional element in the distal direction, so that the functional element is moved in the distal direction. By this movement, the pushing out or release of the functional element is effected.
  • FIG. 12 and 13 a longitudinal section through a medical catheter according to the invention with a charging device during the loading of a functional element into the catheter line according to a preferred embodiment;
  • FIG. 14 shows a longitudinal section through a catheter according to the invention during the
  • the displacement unit 20 has a plurality of dish-shaped sealing means 30.
  • three sealing means 30 form a cascade-like, proximal sealing element 30a and a cascade-like, distal sealing element 30b.
  • the proximal seal member 30a and the distal seal member 30b are spaced from each other.
  • the plate-like sealing means 30 further comprise a radially outer portion 32 which has a relatively high flexibility and forms a sealing lip 31. Due to the high flexibility of the sealing lip 31 or of the radially outer region 32, the secure sealing of the sealing means 30 against the catheter line 10, in particular the low-friction inner wall 12, is achieved.
  • the curvature of the plate-like sealing means 30 is aligned or formed as shown in FIG.
  • the counterpart 54 engages in the recess 27 so far that the lateral edges of the recess 27 engage over the counterpart 54 and form a stop for the counterpart 54 in both the distal and in the proximal direction.
  • the compacted-state-thus-the-arrest-forming-at-the-and-the-pr-oximale-end-SOb-of-the-constituent element 50 form a form-fitting, detachable connection.
  • the recess 27 is formed by a web-shaped extension 28 and an annular end 29 whose diameter is greater than the diameter of the web-shaped extension 28.
  • the web-shaped extension extends centrally in the longitudinal direction of the piston 21 in the distal direction.
  • the recess 27 is formed between the end 29 and a distal shoulder 29 a of the piston.
  • the attending physician has the ability to reposition the catheter tip to make the placement of the functional element or the stent again at a slightly different location in the vessel.
  • the piston 21 is subjected to an overpressure, whereby a movement of the piston 21 is generated in the distal direction.
  • the piston 21 strikes the end stop 13, as shown in FIG. In this case, the recess 27 or generally the locking device 26 leaves the catheter line 10.
  • the proximal end 50b of the functional element 50 comes free, so that the counterpart 54 leaves the recess 27.
  • the distal end 21c of the piston 21 and the proximal end 50b of the functional element 50 are disengaged.
  • the medical catheter of the present invention is useful for releasing laser-cut open-cell and closed-cell stents and braided stents.
  • closed-cell stent and braided stents can, if necessary by applying a negative pressure in the pressure line JJI again in ⁇ the catheter tube 10 withdrawn. become.
  • the catheter according to the invention can be used for releasing filters, baskets or retrievers.
  • Such functional elements 50 are preferably fixedly connected to the adapter 22 and are retracted back into the catheter line 10 after use.
  • the medical catheter according to the invention for the treatment of lesions in cerebral blood vessels, which have a small relatively small cross-sectional diameter, since the catheter according to the invention can be relatively small in size. This is possible because guidewires or stabilizers and similar components can be dispensed with.

Abstract

L'invention concerne un cathéter médical destiné à libérer un élément fonctionnel (50), notamment un implant ou un appareil très peu invasif, comportant une unité de déplacement (20) actionnée par pression, interagissant avec l'élément fonctionnel (50) pour la libération. L'invention est caractérisée en ce que l'unité de décalage (20) comporte un piston (21) disposé lâche dans une conduite de cathéter (10) et relié ou pouvant être relié à l'élément fonctionnel (50). En utilisation, le piston (21) délimite une conduite de pression (15) conçue entre une extrémité proximale de la conduite de cathéter (10) et une surface proximale du piston (21), de telle manière que le piston (21) peut coulisser axialement par rapport à la conduite de cathéter, au moins partiellement, pour libérer l'élément fonctionnel (50) sous l'effet d'une pression, notamment d'une surpression et/ou d'une dépression. L'invention concerne également un système médical comportant un tel cathéter et un dispositif de chargement pour la fabrication d'un tel cathéter.
PCT/EP2010/002734 2009-05-04 2010-05-04 Cathéter médical, système médical comportant un tel cathéter et dispositif de chargement pour la fabrication d'un tel cathéter WO2010127839A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112010001321T DE112010001321A5 (de) 2009-05-04 2010-05-04 Medizinscher Katheter, medizinisches System mit einem derartigen Katheter und Ladevorrichtung zur Herstellung eines derartigen Katheters

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009019823.7 2009-05-04
DE102009019823A DE102009019823A1 (de) 2009-05-04 2009-05-04 Medizinischer Katheter, medizinisches System mit einem derartigen Katheter und Ladevorrichtung zur Herstellung eines derartigen Katheters

Publications (1)

Publication Number Publication Date
WO2010127839A1 true WO2010127839A1 (fr) 2010-11-11

Family

ID=42635014

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/002734 WO2010127839A1 (fr) 2009-05-04 2010-05-04 Cathéter médical, système médical comportant un tel cathéter et dispositif de chargement pour la fabrication d'un tel cathéter

Country Status (2)

Country Link
DE (2) DE102009019823A1 (fr)
WO (1) WO2010127839A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050166389A1 (en) * 2004-01-29 2005-08-04 Scimed Life Systems, Inc. Apparatuses for crimping and loading of intraluminal medical devices
US20050267563A1 (en) * 2004-05-28 2005-12-01 Case Brain C Exchangeable delivery system for expandable prosthetic devices
DE102005008682A1 (de) * 2005-02-25 2006-09-07 Strecker, Ernst Peter, Prof. Dr.med. Implantation von selbst expandierenden Stents mittels hydraulischer Kraft

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6004328A (en) * 1997-06-19 1999-12-21 Solar; Ronald J. Radially expandable intraluminal stent and delivery catheter therefore and method of using the same
US6113608A (en) * 1998-11-20 2000-09-05 Scimed Life Systems, Inc. Stent delivery device
US7163552B2 (en) 2000-10-13 2007-01-16 Medtronic Vascular, Inc. Stent delivery system with hydraulic deployment
DE102006039823A1 (de) * 2005-02-25 2008-03-20 Strecker, Ernst Peter, Prof. Dr. med. Katheter-Stent-Vorrichtung
US7637933B2 (en) 2005-11-01 2009-12-29 Cordis Corporation Method for preparing and employing an implant delivery apparatus
US9119742B2 (en) * 2007-07-16 2015-09-01 Cook Medical Technologies Llc Prosthesis delivery and deployment device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050166389A1 (en) * 2004-01-29 2005-08-04 Scimed Life Systems, Inc. Apparatuses for crimping and loading of intraluminal medical devices
US20050267563A1 (en) * 2004-05-28 2005-12-01 Case Brain C Exchangeable delivery system for expandable prosthetic devices
DE102005008682A1 (de) * 2005-02-25 2006-09-07 Strecker, Ernst Peter, Prof. Dr.med. Implantation von selbst expandierenden Stents mittels hydraulischer Kraft

Also Published As

Publication number Publication date
DE102009019823A1 (de) 2010-11-11
DE112010001321A5 (de) 2012-02-16

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