The present invention discloses a medical assembly and method for the delivery of an implant inside a patient's body. The medical assembly includes a sling assembly including a dilator and an implant. The dilator can be configured to be coupled to the implant. The dilator includes a proximal portion and a distal portion such that the proximal portion includes a first locking feature. The medical assembly includes a delivery device configured to deliver the sling assembly. The delivery device includes a needle and a handle having a proximal portion and a distal portion. The distal portion of the handle includes a second locking feature configured to releasably mate with the first locking feature and inhibit axial movement of the dilator with respect to the delivery device. The first locking feature is sized to frictionally retain the second locking feature.
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