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Catheter distal tip design and method of making

Inactive Publication Date: 2005-10-20
SCI MED LIFE SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0019] Providing a catheter having a distal tip with a curved profile reduces the likelihood of scraping by the inner surface of the distal tip on a guide wire being advanced therethrough, and reduces the likelihood of trauma to the vessel produced by the tip because rounding the inner surface reduces the sharpness of the inner edge as well.

Problems solved by technology

However, rounding the tip on the outside using current methods, may leave the edge of the tip on the inner lumen sharp.
Furthermore, having a sharp tip on the inner lumen can results in parts of the tip which actually break off from the catheter.

Method used

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  • Catheter distal tip design and method of making
  • Catheter distal tip design and method of making
  • Catheter distal tip design and method of making

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Embodiment Construction

[0027] While this invention may be embodied in many different forms, there are described in detail herein by way of illustration, specific embodiments of the invention. This description is an exemplification of the principles of the invention and is not intended to limit the invention to the particular embodiments illustrated.

[0028] Any US patents and applications, and all other published documents mentioned anywhere in this application are incorporated herein by reference in their entirety.

[0029] In one embodiment, the present invention relates to a catheter having a distal tip, the distal tip having an inner surface and an outer surface, and in a longitudinal cross-sectional profile view of the distal tip, the inner surface curves towards the outer surface at the distal end. In one embodiment, the curve has a radial arc.

[0030] The outer surface may also have a curved profile wherein it curves inward toward the inner surface at the distal tip, or the outer surface may have a pro...

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Abstract

A catheter comprises a catheter shaft having a distal tip, the distal tip having an inner surface and an outer surface, the inner surface having a rounded profile. The catheter may be made by rounding the inner surface of the distal tip.

Description

BACKGROUND OF THE INVENTION [0001] This invention relates to both intravascular and non-vascular catheter assemblies. Catheters are commonly employed in percutaneous intravascular procedures, such as percutaneous transluminal coronary angioplasty (PTCA), for example, to open blocked vessels with as little trauma as possible. [0002] Catheters employed for non-vascular procedures include the catheters employed in the urinary tract, or those employed to examine the lower gastrointestinal tract, for example. [0003] Several different types of catheters are utilized for intravascular treatment including guide catheters, angioplasty catheters, dilatation balloon catheters, medical delivery devices such as stent delivery catheters including both the self-expanding and balloon expandable varieties, angiographic catheters, neural catheters, urinary catheters, gastrointestinal catheters, catheters for the reproductive system, heat transfer catheters, therapeutic delivery devices, thrombectomy ...

Claims

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Application Information

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IPC IPC(8): A61M25/00B23K26/40
CPCA61M25/001A61M25/0068A61M25/008B23K26/4065A61M2025/1093B23K26/4025A61M2025/0081B23K2103/42B23K2103/50
Inventor WEBER, JANHOLMAN, THOMAS J.
Owner SCI MED LIFE SYST