PERFUSION BALLOON WITH AN EXPANDABLE INTERNAL LUMEN

Abstract

The present invention relates to a perfusion balloon catheter that has an expandable (enlargeable) inner lumen with a novel design feature that allows a continuous flow through this enlarged lumen sufficient perfusion to the distal lumen of the blood vessel or air passage concurrent to and independently of balloon inflation or deflation resulting in the prolonged dilatation and avoiding the high risks of blood or air flow stricture during balloon inflation.

Claims

1. A perfusion balloon catheter device which creates pulsative perfusion of air, blood or any liquid during balloon inflation in trachea, blood vessel, artery or vein with a constant flow, characterized by comprising; An internal lumen (114) made of Nylon-12, polyether block amide (PEBA), or polyurethane (PU) attached to the external surface of the self/mechanically expandable stent frame (101), a self/mechanically expandable stent frame (101) utilized as a skeleton to increase the cross-section of the blood perfusion lumen to create sufficient blood perfusion to the distal vessel or tissues which is made of a shape-memory metallic wire, an inner lumen (102) for the balloon catheter system used as a guidewire lumen made of Nylon-12, polyether block amide (PEBA), or polyurethane (PU), a radiopaque marker band (103) made of platinum-iridium to visualize the balloon location under fluoroscopy, a kink-resistant inflation lumen (105) for the balloon catheter made of Nylon-12, polyether block amide (PEBA), or polyurethane (PU), a connecting strut (106) of the self/mechanically expandable stent frame (101) to the external surface of the inner lumen (102) made of shape-memory metallic wire, a balloon catheter main shaft (107) to push and pull the total system made of Nylon-12, polyether block amide (PEBA), or polyurethane (PU), one or more fenestration holes (108) to create perfusion of the connection part of the catheter between two or more balloon parts of the system, a connecting part of the catheter (109) between two or more balloon parts of the system internal leaflets (110) of the balloon to use for pulsative perfusion needs to be created, an external sleeve (111) to keep the self/mechanically expandable stent frame (101) in the crimped form until delivered to the desired location made of Nylon-12, polyether block amide (PEBA), or polyurethane (PU), a catheter hub (112) of the external sleeve (111) to push and pull to expand and retrieve the self/mechanically expandable stent frame (101) part of the catheter, a Y connector hub (113) of the balloon catheter system to be used as a guidewire lumen and the inflation and deflation of the balloon (104).

2. A perfusion balloon catheter device according to claim 1; wherein the self/mechanically expandable stent frame (101) has an enlargement structure to expand the internal lumen (114), a compliant, semi-compliant and non-compliant balloon (104) embedded over the self/mechanically expandable stent frame (101) and inflation lumen and an inner lumen (102) as a guidewire lumen and an external sleeve (111) to expand and crimp the self-expandable structure.

3. A perfusion balloon catheter device according to claim 2; wherein the device is constructed over the balloon catheter main shaft (107) and placed in an external sleeve (111) to create a smaller French calibration catheter and large size internal lumen (114) for the system to have sufficient perfusion of the air or blood through the catheter system.

4. Use of a perfusion balloon catheter device according to any one of claim 1 to 3 for drug delivery from the surface of the balloon as coated with or without polymer-based drug coating to create a release kinetic without any time limitation.

5. Use of a perfusion balloon catheter device according to any one of claim 1 to 3 for drug release from both sides of the balloon (104) surface internally and externally to release different drugs for different purposes.

6. Use of a perfusion balloon catheter device according to any one of claim 1 to 3 for drug release, wherein drug elution from the external surface can be programmed differently from the internal surface of the balloon (104).

7. Use of a perfusion balloon catheter device according to any one of claim 1 to 3 for drug release, wherein the guidewire lumen can be utilized to inject drug, contrast media.

8. A perfusion balloon catheter device according to any one of claims 1 to 3; wherein the internal leaflets (110) are located inside the balloon lumen and attached to the internal frame of the self/mechanically expandable stent frame (101) to create enough pressure gradient to transfer the amount of perfusion.

9. A perfusion balloon catheter device according to claim 8; wherein the resistance on the internal leaflets (110) can be adjusted to create the gradient difference to control the flow.

10. A perfusion balloon catheter device according to claim 8 or 9; wherein the internal leaflets (110) can also be activated from an external source of energy to increase and decrease the flow.

11. A perfusion balloon catheter device according to any one of claims 8 to 10; wherein the internal leaflets (110) can be designed as a rotodynamic pump to build up the pressure to increase the flow to create sufficient perfusion.

12. A perfusion balloon catheter device according to claim 1; wherein the connecting part of the catheter (109) between inflated balloons has one or more fenestration holes (108) to create sufficient air or blood perfusion or liquid transfer such as contrast media or drugs.

13. A perfusion balloon catheter device according to claim 1; wherein the device of the invention can be utilized for one or more side branch(s) with different lengths and dimensions such as the aortic arch.

14. A perfusion balloon catheter device according to claim 1; wherein the device has a structure which can create perfusion to bifurcation or trifurcation multivessel interventions without blocking the side branches.

15. A perfusion balloon catheter device according to claim 14; wherein the side branch fenestration holes (108) can be calibrated to determine the amount of the perfusion needed during the intervention.

16. Use of a perfusion balloon catheter device according to claim 1 for control the amount of the perfusion with the diameter of the fenestration holes (108) on the connecting part of catheter (109) to regulate the flow.

17. Use of a perfusion balloon catheter device according to claim 14 for complex interventions such as thoracic interventions, aortic arcus, renal arteries, 3A interventions, aneurysms, dissections, perforations or stenoses dilatation and keeping the sufficient air or blood perfusion to the distal vessel or tissues.

18. A perfusion balloon catheter device according to claim 14; wherein the connecting part of catheter (109) can have special material coating or surface treatment having anti-coagulation properties to avoid blood coagulation inside and outside of the system.

19. A perfusion balloon catheter device according to claim 14; wherein the device is funneled to the center of the device which creates increased flow resistance creating a back-pressure in the coronary arteries supporting enhanced microcirculation can be also utilized to regulate the blood flow.

20. A perfusion balloon catheter device according to claim 14; wherein the device can be detached from the main shaft and released at the desired location as a flow and pressure regulator in the coronary sinus.

21. Use of a perfusion balloon catheter device according to claim 14 for diagnostic purposes to change the calibration and the cross-section of the funneled part to measure the pressure changes and gradient.

22. A perfusion balloon catheter device according to claim 1, wherein self/mechanically expandable stent frame (101) is made of nitinol.

23. A perfusion balloon catheter device according to claim 1, wherein the inner lumen (102) is made of nitinol.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0013] FIG. 1 is a schematic illustration of a preferred embodiment of the perfusion balloon catheter device.

[0014] FIG. 2 is a schematic illustration of a preferred embodiment of the perfusion balloon catheter device.

[0015] FIG. 3 is a schematic illustration of a preferred embodiment of the perfusion balloon catheter device.

[0016] FIG. 4 is a schematic illustration of a preferred embodiment of the perfusion balloon catheter device.

[0017] FIG. 5 is a schematic illustration of a preferred embodiment of the perfusion balloon catheter device.

[0018] FIG. 6 is a schematic illustration of a preferred embodiment of the perfusion balloon catheter device.

[0019] FIG. 7A is a schematic illustration of a preferred embodiment of the perfusion balloon catheter device of the invention funneled to the center of the device, which creates increased blood flow creating a back-pressure in coronary sinus and small vessels in which it will be placed supporting enhanced microcirculation can be also utilized to regulate the blood flow.

[0020] FIG. 7B is a schematic illustration of a preferred embodiment of the perfusion balloon catheter device of the invention which has a detachable shaft to place the self/mechanically expandable stent frame (101) with the balloon (104) at the desired location providing backflow for a longer time.

DESCRIPTION OF REFERENCES IN FIGURES

[0021] 101) self/mechanically expandable stent frame

[0022] 102) inner lumen

[0023] 103) radiopaque marker band

[0024] 104) balloon

[0025] 105) kink-resistant inflation lumen

[0026] 106) connecting strut

[0027] 107) balloon catheter main shaft

[0028] 108) fenestration holes

[0029] 109) connecting part of catheter

[0030] 110) internal leaflets

[0031] 111) external sleeve

[0032] 112) catheter hub

[0033] 113) Y connector hub

[0034] 114) internal lumen

[0035] 115) external surface

[0036] 116) internal part

DETAILED DESCRIPTION OF THE INVENTION

[0037] The present invention relates to a perfusion balloon catheter device withan expandable inner lumen that allows a continuous flow through this enlarged lumen sufficient perfusion to the distal lumen of the blood vessel or air passage concurrent to and independently of balloon inflation or deflation.

[0038] The perfusion balloon catheter device has a balloon (104) with an expandable internal lumen (114) to permit sufficient blood flow during the balloon inflation time. Balloon dilatation time is limited because of blocking the distal perfusion. The subject matter of the device creates a large perfusion lumen inside the balloon catheter at the inflated balloon's location. The subject matter of the device has an expandable internal balloon lumen with a self-expandable or mechanically expandable internal lumen ((114) at the balloon inflation zone of the catheter. The perfusion balloon catheter device has an internal surface or a metallic structure which either self or mechanically expands to create the large internal lumen (114) between the balloon surfaces to provide sufficient blood perfusion through the balloon catheter lumen afterward, the balloon is inflated to a nominal pressure to perform a thoracic intervention, angioplasty, vessel wall occlusion or drug-release for a certain period without blocking the blood flow and supplying sufficient perfusion for the distal tissues and vessels.

[0039] In an embodiment of the invention, the perfusion balloon catheter device comprises a balloon catheter main shaft (107) that provides all device components are connected to advance and navigate together, to push, pull and steer together. In addition, the perfusion balloon catheter device also comprises a kink-resistant inflation lumen (105) to inflate and deflate the balloon at the desired location, which is connected to the balloon catheter main shaft (107) and Y connector hub (113), which is inflation part of catheter hub (112).

[0040] One embodiment of the invention device includes an external sleeve (111) to advance catheter and balloon (104) to the desired location with a minimum possible profile. The catheter hub (112) of the external sleeve (111) is pulled back to expand self/mechanically expandable stent frame (101) of the internal lumen (114) of the balloon to create a large lumen for air or blood perfusion. Expanding the balloon (104) to a certain diameter to start inflation to achieve enough pressure provides performing a thoracic intervention, angioplasty, vessel wall sealing or drug-elution for a longer period than conventional systems.

[0041] The device is advanced through an introducer sheath and over a compatible guidewire to the desired location. The external sleeve (111) is pulled back to release the self/mechanically expandable stent frame (101) of the balloon catheter to enlarge the stricture for air or blood perfusion before the inflation of the balloon with an indeflator to a certain diameter and pressure. The invention device can stay inflated as desired without harming and distal tissued due to a lack of perfusion. The invention device can be deflated with the same indeflator and a vacuum can be applied to aspirate all the residual contrast media or air inside the balloon to push the external sleeve (111) and take all the system inside the external sleeve (111) to finalize the intervention and take all the system out of the patient.

[0042] The perfusion balloon catheter device comprises; [0043] An internal lumen (114) made of Nylon-12, polyether block amide (PEBA), or polyurethane (PU) attached to the external surface of the self/mechanically expandable stent frame (101), [0044] a self/mechanically expandable stent frame (101) made of a shape-memory metallic wire like nitinol, [0045] an inner lumen (102) for the balloon catheter system used as a guidewire lumen made of Nylon-12, polyether block amide (PEBA), or polyurethane (PU), [0046] a radiopaque marker band (103) made of platinum-iridium to visualize the balloon location under fluoroscopy, [0047] a kink-resistant inflation lumen (105) for the balloon catheter made of Nylon-12, polyether block amide (PEBA), or polyurethane (PU); [0048] a connecting strut (106) of the self/mechanically expandable stent frame (101) to the external surface of the inner lumen (102) made of shape-memory metallic wire like nitinol, [0049] a balloon catheter main shaft (107) to push and pull the total system made of Nylon-12, polyether block amide (PEBA), or polyurethane (PU), [0050] one or more fenestration holes (108) to create perfusion of the connection part of the catheter between two or more balloon parts of the system, [0051] a connecting part of the catheter (109) between two or more balloon parts of the system [0052] internal leaflets (110) of the balloon to use for pulsative perfusion needs to be created, [0053] an external sleeve (111) to keep the self/mechanically expandable stent frame (101) in the crimped form until delivered to the desired location made of Nylon-12, polyether block amide (PEBA), or polyurethane (PU), [0054] a catheter hub (112) of the external sleeve (111) to push and pull to expand and retrieve the self/mechanically expandable stent frame (101) part of the catheter, [0055] a Y connector hub (113) of the balloon catheter system to be used as a guidewire lumen and the inflation and deflation of the balloon (104).

[0056] FIG. 1 is a schematic illustration of a preferred embodiment of the perfusion balloon catheter device of the invention having component details such as a self/mechanically expandable stent frame (101) as the skeleton of the enlarged internal lumen (114), an inner lumen (102) for the balloon catheter system used as a guidewire lumen, a radiopaque marker band (103) to visualize the balloon location under fluoroscopy, the balloon (104) part of the catheter attached to the external surface of the self/mechanically expandable stent frame (101), a kink-resistant inflation lumen (105) for the balloon catheter, the connecting strut (106) of the self/mechanically expandable stent frame (101) to the external surface of the inner lumen (102), the balloon catheter main shaft (107) to push and pull the total system, an external sleeve (111) to keep the self/mechanically expandable stent frame (101) in the crimped form until delivered to the desired location, a catheter hub (112) of the external sleeve (111) to push and pull to expand and retrieve the self/mechanically expandable stent frame (101) part of the catheter, a Y connector hub (113) of the balloon catheter system to be used as a guidewire lumen and the inflation and deflation of the balloon (104) part.

[0057] FIG. 2 is a schematic illustration of a preferred embodiment of the perfusion balloon catheter device of the invention having action mechanism details. FIG. 2A is a schematic illustration of a preferred embodiment of the perfusion balloon catheter device of the invention that shows the device inside of the delivery sheath. FIGS. 2B and 2C are schematic illustrations of a preferred embodiment of the perfusion balloon catheter device of the invention showing details of half and full releasing of the device, respectively. FIG. 2D is a schematic illustration of a preferred embodiment of the invention's perfusion balloon catheter device that describes the pressure applied to the balloon to inflate it. FIG. 2E is a schematic illustration of a preferred embodiment of the perfusion balloon catheter device of the invention that describes the vacuum application to deflate the balloon. FIGS. 2F and 2G are schematic illustrations of a preferred embodiment of the perfusion balloon catheter device of the invention that describe the half and full retraction of the device into the delivery system, respectively.

[0058] FIG. 3 is a schematic illustration of a preferred embodiment of the perfusion balloon catheter device of the invention showing details such as a fenestration hole (108) to create perfusion of the connection part of the catheter (109) between two or more balloon parts of the system and a connecting part of the catheter (109) between two or more balloon (104) parts of the system.

[0059] FIG. 4 is a schematic illustration of a preferred embodiment of the perfusion balloon catheter device of the invention showing details of the internal leaflets (110) of the balloon to use for pulsative perfusion that needs to be created. The internal leaflets (110) having an external surface (115) to seal blood or air flow between the vessel wall and the internal lumen (114),are attached to the internal surface of the self/mechanically expandable stent frame (101) and enlarged internal lumen (114) to function when the catheter is fully expanded.

[0060] FIG. 5 is a schematic illustration of a preferred embodiment of the perfusion balloon catheter device of the invention that can be also utilized for one or more side branch(s) with different length and dimensions such as aortic arch, bifurcation, and trifurcation without blocking the side branches.

[0061] FIG. 6 is a schematic illustration of a preferred embodiment of the perfusion balloon catheter device of the invention that can control the amount of the perfusion with the diameter of the fenestration holes (108) on the connecting part of the catheter (109) to regulate the flow.

[0062] FIGS. 7A and 7B are schematic illustrations of a preferred embodiment of the perfusion balloon catheter device of the invention funneled to the center of the device, which creates increased flow resistance creating a back-pressure in the coronary arteries supporting enhanced microcirculation can be also utilized to regulate the blood flow.