Implant capsule and implant delivery system
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, 102 a - 102 e ), a reinforcement section ( 101, 101 a - 101 e ) and a radiopaque reinforcement ring ( 104 a - 104 e ). The reinforcement section ( 101, 101 a - 101 e ) has higher strength than the flexural section ( 102, 102 a - 102 e ). 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.
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 .