EP4622699A1 - Cathéter à pointe fendue avec stylet - Google Patents

Cathéter à pointe fendue avec stylet

Info

Publication number
EP4622699A1
EP4622699A1 EP22871056.2A EP22871056A EP4622699A1 EP 4622699 A1 EP4622699 A1 EP 4622699A1 EP 22871056 A EP22871056 A EP 22871056A EP 4622699 A1 EP4622699 A1 EP 4622699A1
Authority
EP
European Patent Office
Prior art keywords
stylet
distal
lumen
section
catheter
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.)
Pending
Application number
EP22871056.2A
Other languages
German (de)
English (en)
Inventor
Bryon Ray DENSLEY
Brenda L.f. FEDOR
Diana FIUMEFREDDO
Ian N. THOMAS
Danielle Mariah POMPA
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.)
Pristine Access Technologies Ltd
Original Assignee
Pristine Access Technologies Ltd
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 Pristine Access Technologies Ltd filed Critical Pristine Access Technologies Ltd
Publication of EP4622699A1 publication Critical patent/EP4622699A1/fr
Pending 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
    • A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
    • A61M25/0068—Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
    • 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
    • A61M25/0026—Multi-lumen catheters with stationary elements
    • A61M25/003—Multi-lumen catheters with stationary elements characterized by features relating to least one lumen located at the distal part of the catheter, e.g. filters, plugs or valves
    • 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
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0102—Insertion or introduction using an inner stiffening member, e.g. stylet or push-rod

Definitions

  • Multi -lumen catheters are used for the purpose of creating two or more separate fluid pathways, such as in hemodialysis applications.
  • a primary goal of hemodialysis access is to provide a reliable and effective means of dialysis, which means that a sufficient volume of blood over a period of time must be removed from and returned to the patient.
  • a dual lumen catheter is generally used. These dual lumen catheters are usually configured so that distal extensions of the two lumens are separated from each other at the distal end such as in a splayed fashion.
  • U.S. Patent No. 8,500,939 is directed to "split-tip” catheters which is incorporated by reference herein. While the splayed distal extensions enhance the dialysis process, the splayed distal extensions add difficulty to the insertion process of the catheter.
  • a catheter assembly that, according to some embodiments, includes a catheter and a stylet.
  • the catheter includes a catheter tube having at least a first lumen and a second lumen extending along the catheter tube and at least a first extension leg and a second extension leg extending proximally away from a proximal end of the catheter tube.
  • the catheter further includes a split distal tip of the catheter tube, where the split distal tip defines a first distal extension and a second distal extension.
  • the first lumen extends along the first extension leg and the first distal extension, and the second lumen extends along the second extension leg and the second distal extension.
  • the stylet is coupled with the catheter, such that the stylet is (i) inserted into the first lumen via the first extension leg, and (ii) inserted into the second lumen via the second distal extension.
  • the split distal tip is configured such that the first distal extension and the second distal extension are splayed away from each other when the split distal tip is disposed in a free state, and the stylet deflects the first and second distal extensions toward each other when the stylet is coupled with the catheter.
  • a length of the stylet extending between the first and second distal extensions is less than a diameter of the catheter tube.
  • the method 500 may further include extracting the stylet from the catheter (block 530). Extracting the stylet from the catheter further includes extracting the stylet from the first lumen and the second lumen of the catheter. As a result of extracting the stylet the first distal extension of the split distal tip is decoupled from the second distal extension of the split distal tip so that the first and second distal extensions may splay away from each other.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

Un ensemble cathéter comprenant un cathéter à lumières multiples (100) ayant une pointe distale fendue (130) et un stylet (200) couplé au cathéter. Le stylet s'étend le long d'une totalité d'une première lumière (121) et d'au moins une partie distale d'une seconde lumière (122) de telle sorte que le stylet dévie des extensions distales de la pointe distale fendue à l'opposé d'une configuration évasée vers une configuration adjacente d'insertion cohérente de cathéter dans un patient. L'ensemble peut en outre comprendre un fil-guide disposé à l'intérieur d'une lumière conjointement avec le stylet. L'extraction du stylet du cathéter comprend l'extraction d'une section distale du stylet à partir de la seconde lumière et l'étirage proximal de la section distale dans la première lumière. Le stylet comprend une courbure de 180 degrés qui est avancé le long de la première lumière pendant l'assemblage. Un élément de fixation fixé au stylet limite le déplacement distal du stylet le long de la première lumière.
EP22871056.2A 2022-11-29 2022-11-29 Cathéter à pointe fendue avec stylet Pending EP4622699A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2022/000717 WO2024115940A1 (fr) 2022-11-29 2022-11-29 Cathéter à pointe fendue avec stylet

Publications (1)

Publication Number Publication Date
EP4622699A1 true EP4622699A1 (fr) 2025-10-01

Family

ID=85703646

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22871056.2A Pending EP4622699A1 (fr) 2022-11-29 2022-11-29 Cathéter à pointe fendue avec stylet

Country Status (2)

Country Link
EP (1) EP4622699A1 (fr)
WO (1) WO2024115940A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0344530A1 (fr) * 1988-05-27 1989-12-06 Advanced Cardiovascular Systems, Inc. Ensemble de cathéter vasculaire avec cheville guide
US7575563B2 (en) * 2002-11-20 2009-08-18 Appling William M Blood treatment catheter assembly
EP1814610B1 (fr) * 2004-11-04 2020-05-06 Covidien AG Appareil d'insertion de catheter
EP2214765A4 (fr) 2007-10-17 2011-08-10 Bard Access Systems Inc Fabrication de cathéters à pointe divisée
US9656043B2 (en) * 2011-03-08 2017-05-23 Cook Medical Technologies Llc Multi-split-tipped catheter
US10492805B2 (en) * 2016-04-06 2019-12-03 Walk Vascular, Llc Systems and methods for thrombolysis and delivery of an agent
US20170333677A1 (en) * 2016-05-23 2017-11-23 Vascutech Medical Llc Dialysis Catheter Insertion Assembly and Method

Also Published As

Publication number Publication date
WO2024115940A1 (fr) 2024-06-06

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