US 12,502,293 B2Granted

Systems and methods for delivering stent grafts

AssigneePQ Bypass, Inc.

InventorsGene Reis, Kumar Jambunathan, Steven Tyler

Life of this patent

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Abstract

A delivery catheter comprises an inner shaft and an outer sheath. A stent-graft is held on a region of the inner shaft. An enlarged diameter distal region of the outer sheath constrains the stent-graft. Its retraction allows the stent-graft to deploy. A finger wheel on a handle is used to retract the outer sheath and is coupled to a sliding block with cable(s). The sliding block is coupled to the outer sheath and is held within a sliding track. The wheel can be actuated to tension the cable(s) and deform latch(es) coupled to sliding block, freeing them from slot(s) in the sliding track and allowing retraction of the sliding block and the outer sheath. A reinforcement sleeve is coupled to a smaller diameter proximal region of the outer sheath. A gap between the outer sheath distal region and the reinforcement sleeve allows the distal outer shaft region to be retracted.

Claims10

Dependent claims

A catheter apparatus for delivering an implant, the catheter apparatus comprising:

an inner shaft having a proximal portion, a distal portion, and an implant holding region at the distal portion;
an outer sheath disposed at least over the implant holding region of the inner shaft, the outer sheath being configured to be proximally retracted to expose an implant placed in the implant holding region to allow the implant to be deployed, and the retractable outer sheath having a proximal end and a distal end;
at least one retractable latch coupled to the proximal end of the outer sheath and configured to resist retraction of the outer sheath;
and
at least one cable coupled to the at least one retractable latch,
wherein the at least one retractable latch is biased against at least one slot and is configured to be released upon tensioning of the at least one cable over a threshold force so that the proximal retraction of the at least one cable over the threshold force proximally retracts the at least one retractable latch and the outer sheath.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/381,556Filed 21 Jul 2021 · continuation
Priority: 7 Oct 2016
Published: US 2022/0183867 A116 Jun 2022
Granted: 23 Dec 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

A61F 2/958
Instruments specially adapted for placement or removal of stents or stent-grafts: inflatable balloons for placing stents or stent-grafts
A61F 2/954
Instruments specially adapted for placement or removal of stents or stent-grafts: for placing stents or stent-grafts in a bifurcation
A61F 2/962
Instruments specially adapted for placement or removal of stents or stent-grafts: having an outer sleeve
A61F 2/966
Having an outer sleeve: with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod

Family

Application62/405,479Us provisional application · filed 7 Oct 2016
Application15/723,933Parent of this continuation · filed 3 Oct 2017
Application16/357,941Parent of this continuation · filed 19 Mar 2019
US 10,278,851 B2Parent of this continuation · filed 7 May 2019
US 2022/0183867 A1Pre-grant publication · published 16 Jun 2022
US 11,090,177 B2Parent of this continuation
US 2018/0098869 A1Published application
US 2020/0022829 A1Published application
US 12,502,293 B2This patent

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