# US 11,992,426 B2 · Stent for splinting a vein, and system for putting in place a stent

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- Number: US 11,992,426 B2
- Document ID: US11992426B2
- Status: Granted
- Kind: B2
- Application number: 17/213,358
- Filed: 2021-03-26
- Published: 2021-07-15
- Granted: 2024-05-28
- Earliest claimed: 2014-10-21
- Assignees: Marvis Interventional GmbH
- Applicants: MaRVis Interventional GmbH
- Inventors: Nasib Dlaikan-Campos
- Web page: https://patentgrep.com/patent/US11992426B2

## CPC

- A61F 2/90: characterised by a net-like or mesh-like structure
- A61F 2/95: Instruments specially adapted for placement or removal of stents or stent-grafts
- D04C 1/06: Braid or lace serving particular purposes
- A61F 2/9661: {the proximal portion of the stent or stent-graft is released first}
- A61F 2002/9511: {the retaining means being filaments or wires}
- D10B 2509/06: Vascular grafts; stents
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)
- D04C: BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE (machines for making soles from strips of material A43D29/00; cane working B27J1/00)
- D10B: INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES

## Abstract

The invention relates to a stent and a system for putting in place a stent. Said stent is used especially for splinting a vein and consists of a braided, tubular supporting member (2) that has a minimum length of 60 mm. The supporting member is braided from one or more wires in such a way that portions of the wire or wires, resp., delimit rhombuses. The disclosed stent is characterized in that in the unloaded state of the stent, the longitudinal size of most of the rhombuses (7) in the longitudinal direction (15) of the stent (1) is not shorter than the transversal size of the rhombuses.

## Claims

### Claim 1

A system for putting in place a stent, wherein the stent is formed from a braided tubular supporting member, the system comprising:
the stent for splinting a vessel,
a latch wire,
an anchor wire,
an implantation catheter with a lumen for accommodating the stent in a compressed state,
a positioning catheter which is located inside the implantation catheter and only a front side of the positioning catheter is attached to the compressed stent ensuring that the stent is not retracted with the implantation catheter, wherein the front side extends perpendicular to a longitudinal axis of the positioning catheter, wherein the positioning catheter provides at least two chambers extending across the entire length of the positioning catheter which are provided for accommodating a guidewire and for accommodating the latch wire and/or the anchor wire,
the anchor wire which is flexible and threaded through openings of the stent, wherein the openings of the stent through which the anchor wire is threaded are arranged only at a proximal end region of the stent,
the latch wire which extends across one of the chambers of the positioning catheter and is embraced by at least one loop of the anchor wire so that during removal of the latch wire, the anchor wire is released and can be pulled out of the stent and the positioning catheter, wherein the latch wire releases the stent.

### Claim 2

A method for putting in place a stent, comprising the following steps:
insertion into a vessel or a cavity to be splinted in a human or animal body, of a distal end of a system for placing the stent in a vein, in which the stent is formed from a braided tubular supporting member, the system comprising an implantation catheter with a lumen for accommodating the stent in a compressed state, a positioning catheter which is located inside the implantation catheter and only a front side of the positioning catheter is attached to the compressed stent ensuring that the stent is not retracted with the implantation catheter, wherein the front side extends perpendicular to a longitudinal axis of the positioning catheter, wherein the positioning catheter has at least two chambers extending across the entire length of the positioning catheter which are provided for accommodating a guidewire and for accommodating a latch wire and/or an anchor wire, respectively, the anchor wire which is flexible and threaded through openings of the stent, wherein the openings of the stent through which the anchor wire is threaded are arranged only at a proximal end region of the stent, the latch wire which extends across one of the chambers of the positioning catheter and is embraced by at least one loop of the anchor wire so that during removal of the latch wire, the anchor wire is released and can be pulled out of the stent and the positioning catheter, wherein the latch wire releases the stent,
retraction of the implantation catheter, releasing the stent,
retraction of the latch wire, releasing the anchor wire,
pulling out the anchor wire, the positioning catheter, and the implantation catheter of the vessel or cavity to be splinted.