STENT AND SECURELY-INSTALLED ARTIFICIAL VALVE REPLACEMENT DEVICE HAVING SAME

• US 20160000591A1
• Filed: 09/17/2015
• Published: 01/07/2016
• Est. Priority Date: 03/18/2013
• Status: Active Grant

• Current Assignee: Venus Medtech (Hangzhou), Inc.
• Original Assignee: Venus Medtech (Hangzhou), Inc.
• Inventors: LEI, Rongjun, ZHANG, Zhifei, ZHANG, Qiming
• Granted Patent: US 10,098,763 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2/82 Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95; for closing wounds, or holding wounds closed A61B17/04 - A61B17/115; dilators A61M29/00
• CPC Class Codes: A61F 2/89 the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/9522 Means for mounting a stent or stent-graft onto or into a placement instrument
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
• CPC Class Codes: A61F 2002/91525 within the whole structure different bands showing different meander characteristics, e.g. frequency or amplitude
• CPC Class Codes: A61F 2002/91575 connected peak to trough
• CPC Class Codes: A61F 2002/9505 having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument
• CPC Class Codes: A61F 2002/9665 with additional retaining means
• CPC Class Codes: A61F 2210/0014 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2220/0008 Fixation appliances for connecting prostheses to the body
• CPC Class Codes: A61F 2220/0025 Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2220/0033 made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
• CPC Class Codes: A61F 2230/0006 circular
• CPC Class Codes: A61F 2230/0019 rectangular
• CPC Class Codes: A61F 2230/0021 square
• CPC Class Codes: A61F 2230/0052 : T-shaped
• CPC Class Codes: A61F 2230/0069 : cylindrical
• CPC Class Codes: A61F 2250/0036 : differing in thickness
• CPC Class Codes: A61F 2250/0037 : differing in height or in length
• CPC Class Codes: A61F 2250/0039 : differing in diameter
• CPC Class Codes: A61F 2250/0052 : differing in bone ingrowth capacity

Abstract

A stent and a securely-installed artificial valve replacement device having the same, the stent being of a cylindrical structure; the top of the stent is provided with a fixed ear (60); the fixed ear (60) has a neck portion (601) connected to the top of the stent, and a head portion (602) engaged with the fixed head of the stent; the head portion (602) has a bending structure for improving the overall radial thickness; and the artificial valve replacement device is comprised of a stent and a prosthetic valve fixed on the stent. The stent with a bending structure overcomes the problem of easily disengaging from the fixed head of the stent, while not affecting the release of the stent.

Claims

1. A stent, wherein the stent is a cylindrical structure, a top edge of the stent is provided with at least one fixed ear, each fixed ear includes a neck portion connected to the top edge of the stent and a head portion engaging with a stent fixing head, and the head portion is provided with a bent structure configured to increase an overall radial thickness of the stent.

2. The stent according to claim 1, wherein the whole head portion or a part of the head portion is the bent structure.

3. The stent according to claim 2, wherein a ratio of a radial thickness of the bent structure to a radial thickness of the neck portion equals 1.2˜

3;

1.

4. The stent according to claim 1, wherein the head portion is substantially are-shaped, and a concave portion of the arc shape is positioned towards an axis of the stent.

5. The stent according to claim 1, wherein the head portion is substantially wave-shaped.

6. The stent according to claim 1, wherein two side edges of the head portion are bent towards each other.

7. The stent according to claim 6, wherein a bent angle of each of the two side edges is at 160-180 degrees.

8. The stent according to claim 1, wherein a top edge of the head portion is bent towards the neck portion.

9. The stent according to claim 8, wherein a bent angle of the top edge is at 160-180 degrees.

10. A stably-mounted artificial valve replacement device, comprising a stent and a prosthesis valve fixed on the stent;

wherein the stent is a cylindrical structure, a top edge of the stent is provided with at least one fixed ear, each fixed ear includes a neck portion connected to the top edge of the stent and a head portion engaging with a stent fixing head, and the head portion is provided with a bent structure configured to increase an overall radial thickness of the stent.