Implant capsule and implant delivery system

• US 10,123,871 B2
• Filed: 11/14/2014
• Issued: 11/13/2018
• Est. Priority Date: 11/18/2013
• Status: Active Grant

• Current Assignee: Shanghai Microport Cardioflow Medtech Co., Ltd. (MicroPort Scientific Corp.)
• Original Assignee: Shanghai Microport Cardioflow Medtech Co., Ltd. (MicroPort Scientific Corp.)
• Inventors: Liu, Xiang, Gui, Baozhu, Li, Yu, Wu, Mingming, He, Zhixiu, Wang, Haishan
• Primary Examiner(s): Yabut, Diane
• Application Number:
  US15/036,902
• Publication Number:
  US 20160287385A1
• Time in Patent Office: 1,460 Days
• 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 2002/9586 the means being inside the balloon
• CPC Class Codes: A61M 25/005 with embedded materials for reinforcement, e.g. wires, coils, braids

Abstract

An implant capsule (10) and an implant delivery system are disclosed. The implant capsule (10) includes, sequentially from a proximal end to a distal end, a flexural section (102, 102a-102e), a reinforcement section (101, 101a-101e) and a radiopaque reinforcement ring (104a-104e). The reinforcement section (101, 101a-101e) has higher strength than the flexural section (102, 102a-102e). The implant delivery system includes the implant capsule (10). The implant capsule (10) can ensure the implant to be deployed in a coaxial condition and prevent over-expansion due to large expansion forces exerted by a stent of the implant.

Claims

1. A capsule for an implant, wherein the capsule comprises, sequentially from a proximal end to a distal end, a flexural section, a reinforcement section and a radiopaque reinforcement ring, wherein the reinforcement section has higher strength than the flexural section, wherein the reinforcement section consists of a polymer tube and a plurality of reinforcement rings disposed over the polymer tube apart from one another, wherein the plurality of reinforcement rings are formed of a metal or a polymer material having higher strength than the polymer tube, and wherein the plurality of reinforcement rings are individual and discrete rings.

2. The capsule of claim 1, wherein the flexural section is formed of a polymer material.

3. The capsule of claim 1, wherein

the reinforcement section is integrally formed with the flexural section.

4. The capsule of claim 1, wherein

the reinforcement section is connected to the flexural section at a connection point by means of hot melting or an adhesive.

5. The capsule of claim 1, wherein the reinforcement section and the flexural section, of the capsule, both have a smooth inner surface.

6. The capsule of claim 1, wherein the reinforcement section and the flexural section, of the capsule, are both provided with an inner friction-reducing coating.

7. The capsule of claim 6, wherein the friction-reducing coating is made of polytetrafluoroethylene or polyethylene terephthalate.

8. An implant delivery system comprising, sequentially from a proximal end to a distal end, an operating handle and a catheter, the catheter comprising a pushing tube, a capsule and an inner tube assembly, the capsule being in connection with the pushing tube, the inner tube assembly having a proximal end in fixed connection with the operating handle, the capsule and the pushing tube disposed circumferentially over the inner tube assembly, the pushing tube coupled to a control mechanism of the operating handle, wherein the pushing tube and the capsule are advanceable and retractable under control of the control mechanism, and wherein the capsule is a capsule as defined in claim 1.