Hydraulically actuated catheter like system for treating vascular and non-vascular diseases

Patent metadata

Field	Value
Publication number	US-2025050067-A1
Application number	US-202318721814-A
Country	US
Kind code	A1
Filing date	Jan 16, 2023
Priority date	Jan 17, 2022
Publication date	Feb 13, 2025
Grant date	—

Abstract

A catheter includes a rolling membrane defining an inner volume that can be pressurized. The rolling membrane is configured to roll out in a longitudinal direction (D) into a rolled-out state. An inner shaft is attached to the rolling membrane. The membrane can roll out in a longitudinal direction along a vessel of a patient.

First claim

1 . A catheter configured to cross a stenosis or a chronic total occlusion, comprising:
a rolling membrane defining an inner volume that can be pressurized, the rolling membrane being configured to roll out in a longitudinal direction (D) into a rolled out state, and an inner shaft and/or an outer shaft, wherein the catheter comprises a catheter length of 80 cm to 200 cm, the rolling membrane comprises an outer diameter of between 1.5 mm to 5.0 mm and the rolling membrane comprises a length of between 4 cm to 60 cm.

2 . (canceled)

3 . A catheter comprising:
a rolling membrane defining an inner volume that can be pressurized, the rolling membrane being configured to roll out in a longitudinal direction (D) into a rolled-out state: an inner shaft attached to the rolling membrane; and a medical device and/or medical device delivery system and/or a drug and/or a drug delivery system and/or a contrast agent and/or an aspiration system arranged within the inner shaft.

4 . The catheter according to claim 3 , comprising no stent, no stent structure, no guiding element and no guidewire.

5 . The catheter according to claim 3 , wherein the medical device comprises a sensor, an implantable cardioverter-defibrillator electrode, an implantable cardioverter-defibrillator lead, a nerve simulation device, an intervascular coil, a scoring element, a scoring balloon, an intravascular lithotripsy device, an aspiration device, an aneurysm embolization device, a needle, an intravascular ultrasound (IVUS) system, a camera, a catheter, a microcatheter, an ablation catheter, a guiding catheter or a balloon catheter.

6 . The catheter according to claim 1 , comprising an outer shaft.

7 - 14 . (canceled)

15 . The catheter according to claim 1 , wherein the rolling membrane is more flexible than the outer shaft or the inner shaft.

16 . The catheter according to claim 1 , wherein the rolling membrane has a smaller wall thickness than the outer shaft or the inner shaft.

17 . The catheter according to claim 1 , wherein the outer shaft or the inner shaft is reinforced by a metal braid, a metal alloy braid, a polymer braid or by reinforcing fibers.

18 - 21 . (canceled)

22 . The catheter according to claim 1 , comprising a handle.

23 . The catheter according to claim 22 , wherein the handle comprises a stopper or locking mechanism configured to avoid advancement of the rolling membrane in the longitudinal direction and/or rotation of the rolling membrane.

24 . The catheter according to claim 22 , wherein the handle comprises a marker or a ruler.

25 . The catheter according to claim 1 , wherein the catheter comprises a guiding element.

26 . (canceled)

27 . The catheter according to claim 25 , wherein the guiding element comprises a guidewire.

28 . (canceled)

29 . The catheter according to claim 25 , wherein the guiding element comprises regions of different stiffness and/or roughness.

30 . The catheter according to claim 25 , wherein the guiding element comprises an atraumatic distal tip.

31 - 32 (canceled)

33 . The catheter according to claim 1 , wherein the rolling membrane comprises spikes, circumferential grooves, and/or circumferential peaks at its outer surface.

34 - 35 . (canceled)

36 . The catheter according to claim 1 , wherein an outer diameter of the rolling membrane, in the rolled out state, along the longitudinal direction decreases continuously or stepwise from a proximal end of the rolling membrane to a distal end of the rolling membrane.

37 . (canceled)

38 . The catheter according to claim 1 , wherein the rolling membrane comprises a drug or is at least partially covered by a drug coating layer.

39 - 40 . (canceled)

41 . The catheter according to claim 1 , wherein the rolling membrane is configured to be extendable in the longitudinal direction at a higher extent than in a radial direction.

42 . The catheter according to claim 1 , wherein the inner shaft is at least partially located within the inner volume of the rolling membrane.

43 . (canceled)

44 . A method for using a catheter according to claim 1 , comprising use in drug delivery, in crossing chronic total occlusions, in crossing stenosis, in gastrointestinal interventions, in interventional oncology, in intravascular lithotripsy, in treating calcifications, in sheath assisted PVI procedures, in thrombectomy, in treating acute myocardial infarction, in aneurysm treatment, in renal denervation, in treating vein occlusions, in embolic protection device delivery, in reentry catheter procedures, in implantable cardioverter-defibrillator electrode delivery, in vascular interventions, preferably coronary vascular interventions or peripheral vascular interventions or in urology, preferably in urethra stricture treatment, wherein the rolling membrane defines an inner volume that can be pressurized and wherein the rolling membrane is configured to roll out in the longitudinal direction (D) into the rolled out state.

45 - 52 . (canceled).

Assignees

• Biotronik Ag

Inventors

• Mehrabi Azadeh
• Wernli Jeremy
• Wesselmann Matthias
• Quint Bodo

Classifications

• A61M2025/09133

  having specific material compositions or coatings; Materials with specific mechanical behaviours, e.g. stiffness, strength to transmit torque · CPC title

• A61M25/09

  Guide wires · CPC title

• A61M25/0082

  Catheter tip comprising a tool · CPC title

• A61F2/95

  Instruments specially adapted for placement or removal of stents or stent-grafts · CPC title

• A61F2002/9583

  Means for holding the stent on the balloon, e.g. using protrusions, adhesives or an outer sleeve · CPC title