DE102008030966A1 - Frictionless surface/wall for e.g. catheter hose, has glasslike, smooth patterns comprising surface elevations and/or recesses on inner side, and cold or warm tool pressing wall of inner side of cold or warm hose - Google Patents
Frictionless surface/wall for e.g. catheter hose, has glasslike, smooth patterns comprising surface elevations and/or recesses on inner side, and cold or warm tool pressing wall of inner side of cold or warm hose Download PDFInfo
- Publication number
- DE102008030966A1 DE102008030966A1 DE200810030966 DE102008030966A DE102008030966A1 DE 102008030966 A1 DE102008030966 A1 DE 102008030966A1 DE 200810030966 DE200810030966 DE 200810030966 DE 102008030966 A DE102008030966 A DE 102008030966A DE 102008030966 A1 DE102008030966 A1 DE 102008030966A1
- Authority
- DE
- Germany
- Prior art keywords
- wall
- tool
- hose
- cold
- warm
- 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.)
- Withdrawn
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
- A61M25/0013—Weakening parts of a catheter tubing, e.g. by making cuts in the tube or reducing thickness of a layer at one point to adjust the flexibility
-
- 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
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
- A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
-
- 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/08—Tubes; Storage means specially adapted therefor
-
- 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
- A61M2025/0062—Catheters; Hollow probes characterised by structural features having features to improve the sliding of one part within another by using lubricants or surfaces with low friction
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/02—General characteristics of the apparatus characterised by a particular materials
- A61M2205/0222—Materials for reducing friction
Abstract
Description
Katheter-Schläuche, insbesondere solche aus extrudierten Kunststoffen, haben Innen-Durchmesser bis unter 0,5 mm.Catheter tubing, especially those made of extruded plastics, have inside diameters up to less than 0.5 mm.
Ein darin beweglicher Führungsdraht soll aus naheliegenden Gründen mit geringer Reibung bewegt werden können.One in it movable guidewire should be obvious Low friction reasons can be moved.
Übliche Überlegungen zur Reduzierung der Reibwerte zwischen verschiedenen Materialien sind,
- • die Verwendung von die Reibung vermindernden Flüssigkeiten
- • Materialoptimierung hinsichtlich geringer Reibwerte oder
- • durch Reduzierung der inneren Kontaktfläche.
- • the use of friction-reducing fluids
- • Material optimization with regard to low coefficients of friction or
- • by reducing the inner contact surface.
Ungelöst scheint hierbei die Technologiefrage zur Erzielung gewünschter innerer Oberflächen, insbesondere wegen der geringen Durchmesser zu sein.unsolved Here, the technology question seems to achieve the desired internal surfaces, especially because of the small diameter to be.
Angewandte Techniken sind etwa
- • durch Extrusion profilierte Oberflächen, wobei das Profil annähernd parallel zur Achse des Schlauches ausgerichtet ist.
- • das Schmieren mit Flüssigkeiten, jedoch unerwünscht oder
- • die Strukturierung der Innenseite, wird z. B. in
WO 001991017782 A1
- Extruded surfaces with the profile aligned approximately parallel to the axis of the hose.
- • Lubrication with liquids, however undesirable or
- • the structuring of the inside, z. In
WO 001991017782 A1
Werkzeuge und Verfahren zur Deformierung von Rohrwandungen bei Rohrdurchmessern größer 2–3 mm sind etwa:
- • eingesteckte Dorne, wobei die Außenseite beaufschlagt wird. Diese Behandlung erfolgt nur über Teilstrecken der gesamten Rohrausdehnung.
- • Gewinde-Eisen
- • Strahlen mit Strahlmitteln,
- • Schleifen mit rotierenden Bürsten
- • oder das Beizen mit Lösemitteln, Laugen oder Säuren
- • inserted mandrels with the outside applied. This treatment takes place only over part of the entire pipe extension.
- • Threaded iron
- Blasting with blasting agents,
- • Grinding with rotating brushes
- • or pickling with solvents, alkalis or acids
Es wird nun hier vorgeschlagen, die Innenseite des Rohres mit Erhebungen aus dem gleichen Material zu versehen, welche zur Verringerung der Reibung dem sich innenseitig befindlichen Gegenstand, z. B. einem Führungsdraht, nur geringe Kontaktflächen bieten.It is now proposed here, the inside of the tube with elevations from the same material, which helps to reduce the Friction on the inside of the object, eg. A guidewire, offer only small contact surfaces.
Dabei wird jedoch kein zusätzliches Material verwendet, welches eingeklebt oder beim Spritzgießen als Mischungskomponente zugeführt werden müßte.there however, no additional material is used which glued or injection molding as a blend component would have to be supplied.
Das erfindungsgemäße Verfahren beinhaltet in einem
- 1. ersten Verfahrensvorschlag folgende Schritte:
- • Erwärmen eines temporär in den Schlauch eingeführten (Stabes, Rohr oder Feder), welcher eine strukturierte Oberfläche aufweißt
- • radiale, thermische Ausdehnung dieses strukturgebenden Werkzeuges,
- • (hierdurch Anschmelzen der inneren Oberfläche)
- • wobei dieses teilweise in die Innenfläche des Schlauches ein Muster einprägt
- • radialer Druck auf die Außenseite des Schlauches zur Verstärkung der Musterbildung
- • Entspannen des äußeren Werkzeuges,
- • Abkühlen des inneren Werkzeuges und Entnahme aus dem Schlauch
- 2. zweiten Verfahrensvorschlag folgende Schritte:
- • Anschmelzen der Innenseite mittels heißer Gase.
- • Hiefür wird ein inneres, perforiertes Rohr oder Rohrsegment mit heißen Gasen durchströmt.
- • Treten diese an den Öffnungen in der Wandung des Rohres aus, so schmelzen die Gase die Innen-Wandung auf. Je nach Druck der Gase wird dabei auch Material verdrängt.
- • Die darauf folgende Abkühlung durch Flutung des Rohres mit kalten Gasen fixiert die entstandene Struktur.
- 1. first procedural proposal following steps:
- • Heating a temporary inserted into the tube (rod, tube or spring), which has a structured surface
- Radial, thermal expansion of this structuring tool,
- • (thereby melting the inner surface)
- • this partially imprinting a pattern in the inner surface of the tube
- • Radial pressure on the outside of the tube to enhance patterning
- • relax the outer tool,
- • Cooling of the inner tool and removal from the hose
- 2. second procedural proposal the following steps:
- • Melting of the inside with hot gases.
- • For this purpose, an internal, perforated pipe or pipe segment is flowed through with hot gases.
- • If these occur at the openings in the wall of the pipe, the gases melt the inner wall. Depending on the pressure of the gases, material is also displaced.
- • The subsequent cooling by flooding the pipe with cold gases fixes the resulting structure.
Die
entstandene kraterähnliche Wulst ist die gewünschte
Erhebung, auf welcher ein innenliegender Stab, Draht o. Ä.
reibungsarm gleiten kann.
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - WO 001991017782 A1 [0005] WO 001991017782 A1 [0005]
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810030966 DE102008030966A1 (en) | 2008-07-02 | 2008-07-02 | Frictionless surface/wall for e.g. catheter hose, has glasslike, smooth patterns comprising surface elevations and/or recesses on inner side, and cold or warm tool pressing wall of inner side of cold or warm hose |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810030966 DE102008030966A1 (en) | 2008-07-02 | 2008-07-02 | Frictionless surface/wall for e.g. catheter hose, has glasslike, smooth patterns comprising surface elevations and/or recesses on inner side, and cold or warm tool pressing wall of inner side of cold or warm hose |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008030966A1 true DE102008030966A1 (en) | 2010-01-07 |
Family
ID=41396615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200810030966 Withdrawn DE102008030966A1 (en) | 2008-07-02 | 2008-07-02 | Frictionless surface/wall for e.g. catheter hose, has glasslike, smooth patterns comprising surface elevations and/or recesses on inner side, and cold or warm tool pressing wall of inner side of cold or warm hose |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102008030966A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2316333A1 (en) | 2009-10-28 | 2011-05-04 | Eidgenössische Materialprüfungs- und Forschungsanstalt EMPA | Device and method for recognising and reporting a load condition of a person |
EP2893950A1 (en) * | 2014-01-14 | 2015-07-15 | Alvimedica Vascular Research B.V. | Catheter and method for manufacturing such catheter |
DE102019112248A1 (en) * | 2019-05-10 | 2020-11-12 | Biotronik Se & Co. Kg | Multi-lumen body for a medical device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1991017782A1 (en) | 1990-05-22 | 1991-11-28 | Target Therapeutics | Catheter with low-friction distal segment |
-
2008
- 2008-07-02 DE DE200810030966 patent/DE102008030966A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1991017782A1 (en) | 1990-05-22 | 1991-11-28 | Target Therapeutics | Catheter with low-friction distal segment |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2316333A1 (en) | 2009-10-28 | 2011-05-04 | Eidgenössische Materialprüfungs- und Forschungsanstalt EMPA | Device and method for recognising and reporting a load condition of a person |
EP2893950A1 (en) * | 2014-01-14 | 2015-07-15 | Alvimedica Vascular Research B.V. | Catheter and method for manufacturing such catheter |
WO2015107072A1 (en) * | 2014-01-14 | 2015-07-23 | Alvimedica Vascular Research B.V. | Catheter and method for manufacturing such catheter |
DE102019112248A1 (en) * | 2019-05-10 | 2020-11-12 | Biotronik Se & Co. Kg | Multi-lumen body for a medical device |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20110201 |