Implant delivery apparatus

Abstract

An implant delivery device () includes a casing (); and inner and outer tube driving members (), an inner tube (), an intermediate tube (), an outer tube () and an air-evacuation locking assembly (), each at least partially accommodated in the casing (). The three tubes are sequentially nested in one another, and first, second and third spaces are formed between neighbouring tubes. The inner tube driving member () has a proximal end that is sealingly fixed to a proximal end of the inner tube (), and the outer tube driving member () is sealingly fixed to a proximal end of the outer tube (). The intermediate tube () has a proximal end that is sealingly fixed to the inner tube driving member (), and the intermediate tube extends through and is sealingly connected to the outer tube driving member (). The air-evacuation locking assembly () is detachably coupled to the inner tube driving member (). The inner tube driving member () and the air-evacuation locking assembly () are provided with first and second air-evacuation channels (A, B), respectively. When the air-evacuation locking assembly () is coupled to the inner tube driving member (), the second air-evacuation channel (B) is brought into communication with the second and third spaces via the first air-evacuation channel (A) and the first space. The inner tube driving member () is coupled to the casing () by the air-evacuation locking assembly (). When the air-evacuation locking assembly () is disconnected from the inner tube driving member (), the inner tube driving member () remains in slidable connection with the casing ().