US 11,141,192 B2 · Percutaneous access systems and methods

Abstract

Percutaneous access systems, including trocars, for accessing desired locations within a subject's body through the subject's skin or other tissues that are configured to minimize incision sizes are disclosed. Such a percutaneous access system includes a cannula and an obturator. The cannula includes a passageway with a tapered section and an expandable section at its distal end. The expandable section may include leaves that are configured to extend radially outward as an elongated instrument that has an outer diameter that exceeds a minimum relaxed inner diameter of the tapered section of the passageway is forced through the tapered section. Methods for using such a percutaneous access system, including medical procedures, are also disclosed.

Claims20

Dependent claims

A percutaneous access system, comprising:

a cannula with an internal passageway extending through a length thereof;
a handle secured to a proximal end of the cannula, the handle including:
a distal hub at a fixed location relative to the proximal end of the cannula;
a main body proximal to the distal hub, the distal hub secured to a distal end of the main body;
and
a proximal hub assembled with the main body in a manner that enables selective rotation of the proximal hub relative to the main body and the distal hub and selective longitudinal movement of coupling features at a proximal side of the proximal hub toward and/or away from the main body and the distal hub while a distal portion of the proximal hub remains assembled with the main body.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/460,994Filed 2 Jul 2019 · continuation

Priority

19 Nov 2015

Published

US 2019/0321074 A124 Oct 2019

Granted

12 Oct 2021

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

A61B 17/3439
Cannulas: with means for changing the inner diameter of the cannula, e.g. expandable
A61M 25/0074
Characterised by the distal end, e.g. tips: dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable
A61M 25/0606
Body-piercing guide needles or the like: "Over-the-needle" catheter assemblies, e.g. I.V. catheters
A61B 2017/3454
Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating: details of tips

Family

Application14/946,514Parent of this continuation · filed 19 Nov 2015

US 10,335,195 B2Parent of this continuation · filed 2 Jul 2019

US 2019/0321074 A1Pre-grant publication · published 24 Oct 2019

US 2017/0143937 A1Published application

US 11,141,192 B2This patent

From the US filing history. Foreign family members aren’t listed.

Percutaneous access systems and methods

Life of this patent

Percutaneous access systems and methods

Life of this patent

Abstract

Claims20