Intraluminal Puncture Catheter With Expandable Positioning Arm

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Challenges arise in delivering surgical tools through lumens, particularly when targeting blood vessel walls with acute angles, which can lead to risks such as axial displacement and unintentional puncturing, especially in curved vessels.

Innovation Solution

An intraluminal puncturing system with a flexible positioning arm that transitions between collapsed and expanded orientations, a second catheter with an opened distal end affixed to the arm, and a tissue puncturer for controlled orthogonal or near-orthogonal puncturing, facilitated by a control mechanism for radial and axial manipulation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a tool guide is positioned to deliver a puncturer at an acute angle relative to the vessel wall, then the puncture can be achieved in curved vessels, but the risk of axial displacement and unintentional puncturing increases

Engineering Contradiction:

Improveability to puncture curved vesselsVSAvoidrisk of axial displacement and unintentional puncturing

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The tool guide is made dynamically adjustable between acute and orthogonal angles. The guide can be repositioned along the delivery catheter to change the puncture angle, allowing the system to adapt from acute angle delivery (for curved vessels) to orthogonal puncture (for safety and control). This dynamic repositioning capability resolves the contradiction by enabling both curved vessel access and safe orthogonal puncture.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The angle parameter of the tool guide relative to the delivery catheter is made changeable. By adjusting the guide's position and orientation, the system can transition from an acute angle configuration (suitable for curved vessels) to an orthogonal configuration (providing better control and reducing displacement risk). This parameter change allows the system to optimize for both adaptability and reliability depending on the specific anatomical situation.

Inventive Principle:

Principle #35Parameter changes

2Measurement precision

If the angle of penetration of the needle is increased from within the delivery device, then better control over puncture direction is achieved, but additional risks including axial displacement of the delivery device present themselves

Engineering Contradiction:

Improvecontrol over puncture directionVSAvoidaxial displacement of delivery device

Core Design Contradiction:

Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

Instead of increasing the needle penetration angle from within the delivery device (which causes axial displacement), the system inverts the approach by using a tool guide that can be positioned and oriented independently. The guide is placed outside the delivery catheter and directed at the target site, allowing orthogonal puncture without transmitting axial forces to the delivery device. This inversion of the puncture mechanism eliminates the harmful axial displacement while maintaining precise directional control.

Inventive Principle:

Principle #13The other way round (Inversion)

3Length of moving object

If the inner working diameter of the blood vessel is small, then minimally invasive delivery is achieved, but increasing the angle of a tool guide positioned to deliver a puncturing tool becomes challenging

Engineering Contradiction:

Improvecatheter diameter for minimally invasive deliveryVSAvoidability to increase tool guide angle

Core Design Contradiction:

Length of moving objectVSEase of operation

Solution Approach 1:

The system adds a radial dimension to tool guide positioning. Instead of relying solely on axial length adjustments within the narrow catheter, the tool guide can be extended radially outward from the delivery catheter to achieve the desired puncture angle. This dimensional change allows orthogonal or near-orthogonal puncture angles to be achieved even when the delivery catheter maintains a small inner working diameter for minimally invasive delivery.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS20260090825A1Devices, systems, and methods for intraluminal puncturing

Publication Date: 2026.04.02 REVASCARDIO LTD

AI summary

Devices, systems, and methods for intraluminal puncturing system are disclosed. A first catheter has a flexible positioning arm extending from a distal end thereof and being configured for delivery within an anatomical vessel. The flexible positioning arm is configured to transition between a collapsed orientation and an expanded orientation. A second catheter is disposed within the first catheter and has an opened distal end affixed to the positioning arm such that when the flexible positioning arm is in the expanded orientation, the opened distal end opposes a wall of the anatomical vessel. An elongated shaft is extendable through the second catheter. A tissue puncturer is located on a distal end of the elongated shaft. The tissue puncturer is configured for axial advancement in the second catheter and operably connected to the opened distal end of the second catheter.