Patent · US Active

System and methods for sealing a channel in tissue

US11413023B2 · kind B2 · utility

2Cited by

14References

18Claims

0Family size

Assignee

The Provost, Fellows, Scholars and Other Members of Board of Trinity College Dublin · IE

Inventors

Garrett Ryan · Sydney, AU
Colm McGarvey · Dublin, IE

Key dates

Filing date	Jan 10, 2019
Grant date	Aug 16, 2022
Priority date	—
Expiry date	Jan 10, 2039

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61L2430/36
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A system for performing a minimally invasive percutaneous procedure comprises a medical device comprising a hydrogel delivery needle (4) with a tip and a hydrogel outlet (6), an injectable, shear-thinning, self-healing viscoelastic hydrogel that exhibits a storage modulus (G′) of at least 600 Pa, and a tan δ (G″/G) from 0.1 to 0.6 in dynamic viscoelasticity measured by a rheometer at 1 Hz and 1% strain rate at 25° C. The system may also comprise a coaxial cannula (2) having a lumen configured for receipt of the hydrogel delivery needle (4), wherein the hydrogel delivery needle comprises an adjustable positioning mechanism (8) configured to limit the advancement depth of the hydrogel delivery needle through the coaxial cannula to a predetermined depth distal to a distal-most end of the coaxial cannula.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.