US 2021/0259673 A1Published application

Drug supply device

AssigneeTerumo Kabushiki Kaisha

InventorsSatoshi SAWADA, Hideaki SHIBATA, Naoki ISHII

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Abstract

A drug supply device for supplying drug to a living body surface that includes a shaft and a drug holding sheet attached to the distal end of the shaft. The drug holding sheet has a first face that faces distally and a second face opposite the first face that faces proximally when the drug holding sheet is expanded. The drug holding sheet includes folded portions that fold such that the first face is positioned to face radially inward while exposing the second face to an outside environment when the drug holding sheet is in a folded state. A drug is applied on the first face of the drug holding sheet. The drug supply device includes an expandable member on the second face of the drug holding sheet. The expandable member is expandable to cause the drug holding sheet to expand from the folded state into the expanded state.

Claims20

Dependent claims

A method comprising:

introducing a drug holding sheet into a living body, the drug holding sheet being connected to a distal end of an elongated shaft so that movement of the elongated shaft results in movement of the drug holding sheet, the drug holding sheet including a first surface on which is located a drug, the drug holding sheet also including a second surface opposite the first surface of the drug holding sheet, the drug holding sheet being expandable from a folded state toward an expanded state and being foldable from the expanded state to the folded state, the first surface facing in a distal direction when the drug holding sheet is in the expanded state and the second surface facing in a proximal direction when the drug holding sheet is in the expanded state;
the introducing of the drug holding sheet into the living body including introducing the drug holding sheet into the living body while the drug holding sheet is in the folded state in which parts of the first surface of the drug holding sheet on which the drug is located directly face one another;
moving the drug holding sheet within the living body to position the drug holding sheet adjacent a treatment site within the living body, the moving of the drug holding sheet within the living body occurring while the drug holding sheet is in the folded state;
unfolding the drug holding sheet from the folded state toward the expanded state when the drug holding sheet is positioned within the living body, the unfolding of the drug holding sheet causing the parts of the first surface of the drug holding sheet on which the drug is located to directly face the treatment site;
applying the drug on the first surface of the drug holding sheet to the treatment site by moving the first surface of the drug holding sheet into contact with the treatment site while the drug holding sheet is in the expanded state;
and
removing the drug holding sheet from the living body after the applying of the drug on the first surface of the drug holding sheet to the treatment site.

4 more elements

A method comprising:

introducing a drug holding sheet into a living body, the drug holding sheet being connected to a distal end of an elongated shaft so that movement of the elongated shaft results in movement of the drug holding sheet, the drug holding sheet including a first face on which is located a drug, the drug holding sheet also including a second face opposite the first face of the drug holding sheet, the drug holding sheet being changeable between a folded state and an expanded state, the first face facing in a distal direction when the drug holding sheet is in the expanded state and the second face facing in a proximal direction when the drug holding sheet is in the expanded state;
the introducing of the drug holding sheet into the living body including introducing the drug holding sheet into the living body while the drug holding sheet is in the folded state in which parts of the first face on which the drug is located directly face one another;
moving the drug holding sheet within the living body to position the drug holding sheet adjacent a treatment site within the living body, the moving of the drug holding sheet within the living body occurring while the drug holding sheet is in the folded state;
unfolding the drug holding sheet from the folded state toward the expanded state when the drug holding sheet is positioned within the living body, the unfolding of the drug holding sheet causing the first side of the drug holding sheet to directly face the treatment site;
and
moving the first face of the drug holding sheet into contact with the treatment site within the living body while the drug holding sheet is in the expanded state to apply the drug on the first face of the drug holding sheet to the treatment site.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/318,432Filed 12 May 2021
Priority: JP 2016-04797011 Mar 2016
Published: 26 Aug 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

A61B 17/00234
Surgical instruments, devices or methods: for minimally invasive surgery
A61M 25/0074
Characterised by the distal end, e.g. tips: dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable
A61K 9/70
Medicinal preparations characterised by special physical form: web, sheet or filament bases ; Films; Fibres of the matrix type containing drug
A61M 25/0082
Characterised by the distal end, e.g. tips: catheter tip comprising a tool

Family

Application16/126,453Division · filed 10 Sep 2018
Application17/318,432Division
Application16/126,453Continuation
US 11,039,821 B2Related patent
US 2019/0000434 A1Published application
US 2021/0259673 A1This patent

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