Apparatus and method for advancing catheters or other medical devices through a lumen
Inventors
Sardesai, Rajendra Gurudas • PANCHOLY, SAMIR BIPIN • Patel, Tejas Madhusudan
Assignees
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Publication Number
US-11878132-B2
Publication Date
2024-01-23
Expiration Date
Abstract
Devices, systems, and methods are disclosed that help deliver catheters or other medical devices to locations within a patient's body. The device includes a transporter catheter having a proximal end and a distal end, at least a first balloon located adjacent to the distal end, and at least a second balloon located between the first balloon and the proximal end of the transporter catheter. The first balloon is configured for holding a prosthetic device in place. In another embodiment, the transporter catheter has a third balloon, an orienting balloon, substantially at the tip of the distal end of the transporter catheter.
Core Innovation
A system is provided for advancing a treatment device through a lumen of a patient's vasculature using at least an outer sheath and at least a catheter located inside the outer sheath. The catheter has a proximal portion and a distal portion and is configured to be pushed and/or torqued to advance and maneuver the system through the vasculature, while the treatment device is positioned at the distal portion of the catheter and is constrained in a compressed state.
An orienting balloon is positioned on the catheter distal the treatment device, and at least an anchor is provided having a mechanical connector positioned on the catheter. The anchor is configured to be fully inflated or expanded to engage an inner wall of the outer sheath, while the orienting balloon is configured to be fully inflated to engage the inner wall of the outer sheath.
When the anchor and the orienting balloon engage the inner wall, they are configured to apply a pull force on the outer sheath while the catheter is pushed and/or torqued forward. A handle at a proximal end of the catheter is used to engage or disengage the catheter and the outer sheath using the mechanical connector, and the catheter is steerable.
Claims Coverage
Independent claims are provided for a steerable advancing system and a coordinated system including an orienting balloon and a clot-treatment function. Across the independent claims, the core inventive coverage centers on a catheter-in-sheath transport with a compressed constrained treatment device and coordinated balloon/anchor engagement that applies a pull force on the outer sheath during pushing and/or torquing, including proximal handle engagement/disengagement via a mechanical connector.
Coordinated pull-force engagement with orienting balloon and anchor
An orienting balloon on the catheter distal the treatment device and an anchor with a mechanical connector on the catheter, where the anchor is configured to be fully inflated or expanded to engage an inner wall of the outer sheath while the orienting balloon is configured to be fully inflated to engage the inner wall of the outer sheath such that the anchor and the orienting balloon are configured to apply a pull force on the outer sheath when engaged and the catheter is pushed and/or torqued forward.
Compressed constrained treatment device at the distal catheter portion
A treatment device positioned at the distal portion of the catheter and configured to be constrained in a compressed state while the catheter is pushed and/or torqued to advance and maneuver the system through the patient's vasculature.
Steerable catheter advanced through lumen inside an outer sheath
At least an outer sheath and at least a catheter located inside the outer sheath, where the catheter has a proximal portion and a distal portion and is configured to be pushed and/or torqued to advance and maneuver the system through a lumen of a patient's vasculature, and wherein the catheter is steerable.
Proximal handle engagement/disengagement using the mechanical connector
A handle at a proximal end of the catheter used to engage or disengage the catheter and the outer sheath using the mechanical connector.
Clot treatment device with blood-flow restoration and clot removal
The treatment device is a clot treatment device for treating embolism, configured for restoring blood flow through a clot and for removing at least a portion of the clot.
Anchor selected from inflatable balloon, mechanical connector, or any combination thereof
An anchor selected from a group consisting of an inflatable balloon, a mechanical connector, and any combination thereof, positioned on the catheter, where the anchor is configured to be fully inflated or expanded to engage an inner wall of the outer sheath while the orienting balloon is configured to be fully inflated to engage the inner wall of the outer sheath.
The independent claims cover an outer sheath and inner catheter system that advances a steerable, pushable/torquable catheter carrying a treatment device constrained in a compressed state, where coordinated engagement of a fully inflated orienting balloon and an anchor with an inner wall applies a pull force to the outer sheath. The claims further require proximal handle engagement/disengagement through a mechanical connector, and one independent claim additionally narrows the treatment device to a clot-treatment device for restoring blood flow and removing at least a portion of the clot, with the anchor selectable from an inflatable balloon and/or a mechanical connector.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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