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1. WO2021185417 - INDWELLING CANNULA

Publication Number WO/2021/185417
Publication Date 23.09.2021
International Application No. PCT/DE2021/100274
International Filing Date 18.03.2021
IPC
A61M 25/06 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES 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
25Catheters; Hollow probes
01Introducing, guiding, advancing, emplacing or holding catheters
06Body-piercing guide needles or the like
A61M 25/09 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES 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
25Catheters; Hollow probes
01Introducing, guiding, advancing, emplacing or holding catheters
09Guide wires
A61M 5/32 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES 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
5Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm rests
178Syringes
31Details
32Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
CPC
A61M 2025/09125
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
25Catheters; Hollow probes
01Introducing, guiding, advancing, emplacing or holding catheters
09Guide wires
09125Device for locking a guide wire in a fixed position with respect to the catheter or the human body
A61M 25/0606
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
25Catheters; Hollow probes
01Introducing, guiding, advancing, emplacing or holding catheters
06Body-piercing guide needles or the like
0606"Over-the-needle" catheter assemblies, e.g. I.V. catheters
A61M 25/0625
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
25Catheters; Hollow probes
01Introducing, guiding, advancing, emplacing or holding catheters
06Body-piercing guide needles or the like
0612Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
0618having means for protecting only the distal tip of the needle, e.g. a needle guard
0625with a permanent connection to the needle hub, e.g. a guiding rail, a locking mechanism or a guard advancement mechanism
A61M 25/0631
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
25Catheters; Hollow probes
01Introducing, guiding, advancing, emplacing or holding catheters
06Body-piercing guide needles or the like
0612Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
0631having means for fully covering the needle after its withdrawal, e.g. needle being withdrawn inside the handle or a cover being advanced over the needle
A61M 25/065
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
25Catheters; Hollow probes
01Introducing, guiding, advancing, emplacing or holding catheters
06Body-piercing guide needles or the like
065Guide needles
A61M 5/329
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
5Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
178Syringes
31Details
32Needles; Details of needles pertaining to their connection with syringe or hub
329characterised by features of the needle shaft
Applicants
  • BUTZ, Martin [DE]/[DE]
Inventors
  • BUTZ, Martin
Agents
  • PATENTANWALTSKANZLEI VIÈL & WIESKE PARTGMBB
Priority Data
10 2020 107 773.420.03.2020DE
Publication Language German (de)
Filing Language German (DE)
Designated States
Title
(DE) VERWEILKANÜLE
(EN) INDWELLING CANNULA
(FR) CANULE À DEMEURE
Abstract
(DE) Die Erfindung betrifft eine Verweilkanüle mit einer Hohlnadel (5) und einem Einsatz, wobei der Einsatz innerhalb der Hohlnadel (5) längsverschiebbar ist. Eine Sperrvorrichtung zum Blockieren der Längsverschiebung des Einsatzes innerhalb der Hohlnadel (5) in distaler Richtung (22) ist vorgesehen. Zudem betrifft die Erfindung eine Verweilkanüle (1) mit einem flexiblen Katheter (17) mit einem am distalen Ende des Katheters angrenzenden Gehäuse (4) und einer Hohlnadel (5), wobei die Hohlnadel innerhalb des flexiblen Katheters längsverschiebbar ist. Insbesondere betrifft die Erfindung eine Verweilkanüle mit Rückschubschutz. Die Längsverschiebung der Hohlnadel innerhalb des flexiblen Katheters in proximaler Richtung wird durch eine Sperrvorrichtung (2) blockiert. Dadurch wird eine Beschädigung des Katheters durch die Nadelspitze bei ungewolltem als auch bei gewolltem Wiedervorschieben der Hohlnadel innerhalb des Katheters verhindert. Dabei besitzt die Sperrvorrichtung einen Käfig, der als Spitzenschutz der aus dem Katheter herausgezogenen Hohlnadel dient.
(EN) The invention relates to an indwelling cannula comprising a hollow needle (5) and an insert, wherein the insert can be displaced longitudinally within the hollow needle (5). A blocking device is provided for blocking the longitudinal displacement of the insert within the hollow needle (5) in the distal direction (22). The invention further relates to an indwelling cannula (1) comprising a flexible catheter (17) with a housing (4), which adjoins the distal end of the catheter, and a hollow needle (5), wherein the hollow needle can be moved longitudinally within the flexible catheter. In particular, the invention relates to an indwelling cannula with backslide protection. The longitudinal displacement of the hollow needle within the flexible catheter in the proximal direction is blocked by a blocking device (2). In this manner, damage to the catheter by means of the needle tip is prevented during an intentional or unintentional movement of the hollow needle forward again within the catheter. The blocking device has a cage that is used as a tip protection for the hollow needle which is drawn out of the catheter.
(FR) L'invention concerne une canule à demeure pourvue d'un cathéter flexible doté d'un boîtier adjacent à l'extrémité distale du cathéter, et d'une aiguille creuse, l'aiguille creuse étant insérable en longueur dans le cathéter flexible. L'invention concerne en particulier une canule à demeure pourvue d'un système antirecul de l'aiguille à ponction trocart. Un dispositif de blocage permet de bloquer tout déplacement longitudinal de l'aiguille creuse à l'intérieur du cathéter flexible dans le sens proximal. Cela permet d'empêcher tout endommagement du cathéter par la pointe de l'aiguille en cas de nouvel avancement, involontaire tout comme volontaire, de l'aiguille creuse à l'intérieur du cathéter. A cet effet, le dispositif de blocage possède une cage qui sert de capuchon protège-pointe de l'aiguille creuse tirée hors du cathéter.
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