Definition
Japan Patent Office
Rapporteur Proposal-definitions
Project: A042
Subclass: A61F
Date:February 17 , 2011
Title – A61F 2/07
Stent-grafts
Definition statement
This subgroup covers:
Stent-grafts for blood vessels. Stent-grafts are tubular grafts with stents embedded therein or attached to the graft material. The stent-graft for blood vessels is usually deployed within an aneurysm. The stent anchors the graft to the blood vessel wall. The graft is usually made from fabric material.
Informative references
Attention is drawn to the following places, which may be of interest for search:
Stent-grafts for tubular structures of the body other than blood vessels
A61F 2/04
Title – A61F 2/82
Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
Definition statement
This subgroup covers:
Stents with tubular structures deployed within a stenosis in order to widen and support the vessel. The stent is usually made from a rigid material like metal.
References relevant to classification in this subclass
This subgroup does not cover: for closing wounds, or holding wounds closed dilators
Stent-grafts for tubular structures of the body other than blood vessels stent-grafts for blood vessels
A61B 17/03
A61M 29/00
A61F 2/04
A61F 2/07

instruments for placement or removal of stents A61F 2/95
Title – A61F 2/856
Single tubular stent with a side portal passage
Definition statement
This subgroup covers:
Single tubular stent with a passage in side of the stent for allowing access to secondary lumen (see passage 60 in the example drawing).
Title – A61F 2/90 the wire-like elements forming a net structure
Synonyms and keywords
In patent documents the words “net”, “net-like”, “mesh” and “mesh-like” are often used as synonyms.
Title – A61F 2/905
Comprising two or more adjacent rings interconnected by separate flexible links

Definition statement
This subgroup covers:
Stent rings which are connected in order to allow flexibility of the whole structure (see connectors (4) between stent rings (2) in the example drawing).
Title – A61F 2/915 with bands having a meander structure of which adjacent bands are connected to each other
Definition statement
This subgroup covers:
Stents having a meander or wave-like pattern. The stent comprises several meander bands. Each meander band forms peaks and throughs. The bands are connected to each other by struts (see connector 50 between bands 40 and 60 in the example drawing) or directly connected without struts .

Title – A61F 2/92
Stents in the form of a rolled-up sheet expanding after insertion into the vessel
Synonyms and keywords
In patent documents the words “rolled-up” and “coiled” are often used as synonyms.
Title – A61F 2/95
Instruments specially adapted for placement or removal of stents or stent-grafts
Informative references
Attention is drawn to the following places, which may be of interest for search: surgical instruments for closing wounds, or holding wounds closed catheters; hollow probes
A61B 17/03
A61M 25/00