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EP4601566A1 - Dispositif d'athérectomie rotatif - Google Patents

Dispositif d'athérectomie rotatif

Info

Publication number
EP4601566A1
EP4601566A1 EP22802575.5A EP22802575A EP4601566A1 EP 4601566 A1 EP4601566 A1 EP 4601566A1 EP 22802575 A EP22802575 A EP 22802575A EP 4601566 A1 EP4601566 A1 EP 4601566A1
Authority
EP
European Patent Office
Prior art keywords
atherectomy device
rotational atherectomy
abrasive head
oint
control
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
EP22802575.5A
Other languages
German (de)
English (en)
Inventor
Artur SPODOBALSKI
Allan RONAN
Eoin CONNAUGHTON
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.)
ClearStream Technologies Ltd
Original Assignee
ClearStream 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 ClearStream Technologies Ltd filed Critical ClearStream Technologies Ltd
Publication of EP4601566A1 publication Critical patent/EP4601566A1/fr
Pending legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/32—Surgical cutting instruments
    • A61B17/3205—Excision instruments
    • A61B17/3207—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions
    • A61B17/320758—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions with a rotating cutting instrument, e.g. motor driven
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/00234—Surgical instruments, devices or methods for minimally invasive surgery
    • A61B2017/00292—Surgical instruments, devices or methods for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means
    • A61B2017/003—Steerable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/32—Surgical cutting instruments
    • A61B2017/320004—Surgical cutting instruments abrasive
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/32—Surgical cutting instruments
    • A61B17/320016—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes
    • A61B17/32002—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes with continuously rotating, oscillating or reciprocating cutting instruments
    • A61B2017/320032—Details of the rotating or oscillating shaft, e.g. using a flexible shaft

Definitions

  • the present disclosure relates to a rotational atherectomy device for abrading or cutting tissue .
  • Atherosclerosis is a condition where calci fied plaque deposits in the walls of a blood vessel lead to narrowing of the blood vessel and increased blood pressure . In severe cases , this can result in peripheral artery disease , coronary artery disease , tissue death or stroke .
  • Atherectomy is a non-surgical procedure to open blocked blood vessels using a device at the distal end of a catheter to cut or grind atherosclerotic plaque from the walls of the blood vessel .
  • Atherectomy devices can generally be classi fied into four di f ferent types : orbital , rotational , laser and directional .
  • a rotational atherectomy device uses a rotating abrasive head to cut or grind the atherosclerotic plaque from the walls of the blood vessel .
  • a number of existing rotational atherectomy devices incorporate an abrasive head of fixed diameter .
  • the abrasive head i s of fset towards one side of the vessel wall and the lesion is treated with multiple axial passes , where after each axial pass , the abrasive head is rotated by a set amount . This makes the treatment procedure longer and more complex .
  • a rotational atherectomy device for abrading or cutting tissue .
  • the atherectomy device comprises a flexible outer shaft and a rotatable inner drive shaft , disposed within the outer shaft .
  • the rotational atherectomy device further comprises an abrasive head which is connected to the distal end of the rotatable inner drive shaft through a mechanical j oint such that the abrasive head can tilt relative to the rotatable inner drive shaft .
  • the rotational atherectomy device further comprises at least three control wires connected to the distal end of the flexible outer shaft .
  • this may minimise the loss of torque between the drive shaft and the abrasive head .
  • the mechanical j oint may be a ball and socket j oint .
  • the control wires may be connected to the distal end of the flexible outer shaft at regular circumferential intervals .
  • this may result in improved control over tilting movement of the abrasive head .
  • the rotational atherectomy device may comprise at least four control wires connected to the distal end of the flexible outer shaft .
  • this may result in improved control over tilting movement of the abrasive head .
  • Each of the control wire lumens may terminate in a distal opening disposed proximally of the mechanical j oint .
  • the abrasive head may comprise one or more cutting edges .
  • the abrasive head may be substantially spherical shaped .
  • the rotatable inner drive shaft may be flexible .
  • this may allow the rotatable atherectomy device to be introduced into a vessel over a guidewire .
  • the rotational atherectomy device 100 includes a rotatable inner drive shaft 110 and an abrasive head 130 connected to a distal end of the rotatable inner drive shaft 110 via a mechanical j oint so that the abrasive head 130 rotates with the rotatable inner drive shaft 110 .
  • the mechanical j oint is a universal j oint 111 .
  • the universal j oint 111 allows the abrasive head 130 to be tilted relative to the rotatable inner drive shaft 110 so that vessels with larger diameters can be treated with the same rotational atherectomy device 100 .
  • the universal j oint 111 also provides for ef ficient torque trans fer from the rotatable inner shaft 110 to the abrasive head 130 such that the loss of torque is minimised .
  • the atherectomy device 100 may then be advanced over the guidewire 170 until the abrasive head 130 is positioned at the treatment site , as shown in FIG . 3A.
  • the abrasive head 130 can be tilted to one side by moving the j oystick 142 in a particular direction .
  • the rotational motor 170 can be turned on using the rotational control mechanism, for example , by rotating wheel 141 ( see FIG . 1 ) which will cause the rotatable inner shaft 110 and abrasive head to 130 rotate .
  • the rotation will cause the abrasive head 130 to cut or scrape the calci fied plaque P from the inside of the vessel wall .
  • the speed of rotation of the abrasive head 130 can be controlled by adj usting the amount of rotation of the wheel 141 of the rotation control mechanism .
  • the mechanical j oint is not limited to being a universal j oint or a ball and socket j oint but may be any suitable mechanical j oint which can trans fer torque across a bend .
  • the atherectomy device 100 , 200 may not have four control wire but may have fewer or more control wires .
  • the atherectomy device 100 , 200 may have three , five or six control wires .
  • the control wire lumens may not terminate proximal to the mechanical j oint .
  • the abrasive head 130 may not comprise an abrasive surface .
  • the control unit 140 may not comprise a motor 170 or a rotation control mechanism for controlling the speed of the motor .

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Vascular Medicine (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

Un dispositif d'athérectomie rotatif pour abraser ou couper un tissu. Le dispositif d'athérectomie comprend un arbre externe flexible et un arbre d'entraînement interne rotatif, disposé à l'intérieur de l'arbre externe. Le dispositif d'athérectomie rotatif comprend en outre une tête abrasive qui est reliée à l'extrémité distale de l'arbre d'entraînement interne rotatif par l'intermédiaire d'un joint mécanique de telle sorte que la tête abrasive peut s'incliner par rapport à l'arbre d'entraînement interne rotatif. Le dispositif d'athérectomie rotatif comprend en outre au moins trois fils de commande reliés à l'extrémité distale de l'arbre externe flexible.
EP22802575.5A 2022-10-12 2022-10-12 Dispositif d'athérectomie rotatif Pending EP4601566A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2022/078376 WO2024078712A1 (fr) 2022-10-12 2022-10-12 Dispositif d'athérectomie rotatif

Publications (1)

Publication Number Publication Date
EP4601566A1 true EP4601566A1 (fr) 2025-08-20

Family

ID=84357842

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22802575.5A Pending EP4601566A1 (fr) 2022-10-12 2022-10-12 Dispositif d'athérectomie rotatif

Country Status (2)

Country Link
EP (1) EP4601566A1 (fr)
WO (1) WO2024078712A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6146395A (en) * 1998-03-05 2000-11-14 Scimed Life Systems, Inc. Ablation burr
JP5457177B2 (ja) * 2006-06-30 2014-04-02 アセロメッド， インコーポレイテッド アテローム切除術の装置および方法
WO2018130978A1 (fr) * 2017-01-13 2018-07-19 Marco Merlini Cathéter comprenant une partie distale pliable

Also Published As

Publication number Publication date
WO2024078712A1 (fr) 2024-04-18

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