Catheter hubs

Patent metadata

Field	Value
Publication number	US-10737060-B2
Application number	US-201715704928-A
Country	US
Kind code	B2
Filing date	Sep 14, 2017
Priority date	Sep 14, 2016
Publication date	Aug 11, 2020
Grant date	Aug 11, 2020

Abstract

A hub assembly for connection to a medical device having a built in strain relief. The hub assembly may comprise a hub body having a proximal end and a distal end. A lumen may extend from the proximal end to the distal end of the hub body. The distal end of the hub body may have a rounded surface. The rounded surface may have a radius of curvature of greater than 1 millimeter.

First claim

What is claimed is:

1. A hub assembly comprising:
an elongate shaft having a proximal end, a distal end, and a lumen extending therebetween;
a hub body having a proximal end region and a distal end region, the distal end region of the hub body affixed to the proximal end of the elongate shaft; and
a second lumen extending from the proximal end region to the distal end region of the hub body, the second lumen of the hub body including a proximal region, an intermediate region, and a distal region, the distal region increasing in diameter from a proximal end of the distal region of the second lumen to a distal end of the hub body;
wherein an entirety of the distal end of the hub body has a symmetrically rounded surface, the distal end of the hub body distal to the proximal end of the elongate shaft and the rounded surface configured to limit a radius of bending of the elongate shaft when the elongate shaft is bent relative to the hub body and having a radius of curvature of greater than 1 millimeter.

2. The hub assembly of claim 1 , further comprising at least one gripping portion formed in a side surface of the hub body.

3. The hub assembly of claim 2 , wherein the at least one gripping portion comprises a generally flat region.

4. The hub assembly of claim 3 , wherein the rounded surface gradually transitions to the generally flat region.

5. The hub assembly of claim 2 , wherein the at least one gripping portion comprises two gripping portions, each positioned on an opposing side of the hub body.

6. The hub assembly of claim 1 , wherein the second lumen has a step-wise change in diameter at the proximal end of the distal region.

7. The hub assembly of claim 1 , wherein the rounded surface extends into the second lumen.

8. The hub assembly of claim 1 , wherein the proximal region of the second lumen comprises a tapered region that is configured to direct a fluid distally from a larger diameter to a smaller diameter region.

9. The hub assembly of claim 1 , wherein the hub body comprises a polycarbonate.

10. The hub assembly of claim 1 , wherein the hub body is transparent.

11. A hub assembly comprising:
an elongate shaft having a proximal end, a distal end, and a lumen extending therebetween;
a generally tubular hub body increasing in outer diameter from a proximal end region to a distal end region thereof, the distal end region of the hub body affixed to the proximal end of the elongate shaft;
a second lumen extending from the proximal end region to the distal end region of the hub body; and
at least one generally flat surface formed in a first side surface of the generally tubular body to form at least one gripping portion;
wherein an entirety of the distal end region of the hub body forms a convex rounded surface extending continuously about a circumference thereof, the entirety of the convex rounded surface limiting a radius of bending of the elongate shaft to reduce or prevent kinking of the elongate shaft when the elongate shaft follows the convex rounded surface and having a radius of curvature of greater than 1 millimeter.

12. The hub assembly of claim 11 , wherein the convex rounded surface gradually transitions to the generally flat region.

13. The hub assembly of claim 11 , wherein a distal region of the second lumen comprises a flared region that increases in diameter from a first location at least proximate the proximal end region of the hub body to the distal end region of the hub body.

14. The hub assembly of claim 11 , wherein the convex rounded surface extends into the second lumen.

15. A microcatheter, comprising:
an elongate shaft having a proximal end, a distal end, and a lumen extending therebetween;
a hub assembly having a proximal end region and a distal end region, the distal end region of the hub assembly affixed to the proximal end of the elongate shaft, the hub assembly comprising:
a generally tubular hub body increasing in outer diameter from the proximal end region to the distal end region, wherein the outer diameter reaches a maximum outer diameter closer to the distal end region than the proximal end region or in the distal end region;
a second lumen extending from the proximal end region to the distal end region of the hub body, wherein a distal portion of the lumen increases in diameter in a distal direction; and
at least one gripping portion formed in a first side surface of the generally tubular hub body;
wherein the distal end region of the hub body has a rounded surface, the rounded surface configured to limit a radius of bending of the elongate shaft when the elongate shaft is bent relative to the hub body and having a radius of curvature of greater than 1 millimeter.

16. The microcatheter of claim 15 , wherein the hub assembly is molded over the proximal end of the elongate shaft.

17. The microcatheter of claim 15 , wherein the proximal end of the elongate shaft is press fit into the second lumen of the hub assembly.

18. The microcatheter of claim 15 , wherein the proximal end of the elongate shaft is secured within the second lumen of the hub assembly with an adhesive.

Assignees

• Boston Scient Scimed Inc

Inventors

• Gupta Ajay
• Raab David
• Smith Mark S
• Fredrikson Ken

Classifications

• A61M25/0097 Primary

  characterised by the hub (connectors A61M39/10) · CPC title

• A61M2205/58

  Means for facilitating use, e.g. by people with impaired vision · CPC title

• A61M2025/0175

  having telescopic features, interengaging nestable members movable in relations to one another · CPC title

• A61M2025/0004

  having two or more concentrically arranged tubes for forming a concentric catheter system · CPC title

• A61M2025/0098

  having a strain relief at the proximal end, e.g. sleeve · CPC title