Core-wire joint with micro-fabricated medical devices

An instrumental, mechanically grounded technique used in the direction of guide wires, etc.

Active Publication Date: 2020-03-31
SCIENTIA VASCULAR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] While such guide wire devices have provided many benefits, there are still some limitations
For example, it is difficult to couple or connect a superelastic material such as Nitinol to a guidewire core material and maintain the desired design properties of a guidewire device

Method used

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  • Core-wire joint with micro-fabricated medical devices
  • Core-wire joint with micro-fabricated medical devices
  • Core-wire joint with micro-fabricated medical devices

Examples

Experimental program
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Embodiment Construction

[0020] introduce

[0021] The present disclosure relates to guidewire instruments that provide efficient anatomical navigation capabilities. The ability to steer and guide the guidewire to the target anatomical location depends on balancing and optimizing the trade-off between torsionality and flexibility. Rigid materials with high torsional properties typically have low flexibility, making intravascular navigation difficult. On the other hand, elastic materials with high flexibility generally lack torsionality, especially as the distance between the site of torque application and the distal tip increases.

[0022] An advantageous guidewire device may include an effectively torsional proximal section and an effectively flexible distal section to enable navigation of tortuous paths in the vasculature. However, finding a single material that strikes the right balance between torsionality and flexibility has been difficult, and connecting two materials with different properties...

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Abstract

The present disclosure relates to core-wire joints for micro-fabricated medical devices, such as guidewires. A hybrid guidewire device includes a core (102) having a joint (105) between a proximal section (110) and a distal section (112) of the core and a tube structure (104) surrounding the joint. The proximal section of the core is made of or includes stainless steel and the distal section is made of or includes a superelastic material such as nitinol. Further, the terminal, distal portion of the proximal section of the core includes serrations (116), and a terminal, proximal portion of thedistal section of the core includes complementary serrations (118) sized and shaped to interlock with serrations (116). The distal end of the proximal section mechanically interlocks with a proximal end of the distal section to form the joint.

Description

[0001] Cross References to Related Applications [0002] This application claims priority and benefit to U.S. Provisional Patent Application Serial No. 62 / 511,597, filed May 26, 2017, entitled "Core Wire Splices for Microprocessed Medical Devices," the entire contents of which are incorporated by reference in their entirety Incorporated into this article. Background technique [0003] Guide wire devices are typically used to lead or guide a catheter or other interventional device to a targeted anatomical location within a patient. Typically, a guidewire enters and passes through the patient's vasculature to reach a target location, which may be at or near the patient's heart or neurovascular tissue, for example. Radiographic imaging can be used to help physicians navigate the guidewire to the target location. In many cases, the guidewire is left during the intervention at a target location within the body where it can be used to guide multiple catheters or other intervention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/09
CPCA61M25/09A61M2025/09075A61M2025/09091A61M2025/09141A61M2025/09166
Inventor C·C·戴维斯
Owner SCIENTIA VASCULAR INC
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