Forward push release type suture line locking device

Abstract

The invention provides a forward push release type suture line locking device. The forward push release type suture line locking device is used for fixing a suture line in a lock nail and comprises a chuck and a push rod assembly sleeved outside the chuck, a lock pin is accommodated at the far end of the chuck, and the chuck has elasticity; the push rod assembly comprises a push rod, the side, facing the chuck, of the push rod is provided with a concave part, the side, facing the push rod, of the chuck is provided with a protruding part corresponding to the concave part; in the process that the push rod continuously moves towards the far end in the axial direction, the push rod firstly abuts against and pushes the gradually-rising side of the protruding part so as to force the chuck to press the lock pin to deform and lock the suture line; then the protruding part is gradually accommodated in the concave part, so that the chuck at least partially deforms to release the lock nail. According to the forward push release type suture line locking device, violent jumping at the moment when the chuck releases the locking nail can be avoided, and the risk that tissue is torn is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a forward push release type suture locking device. Background technique [0002] During the operation, it is often necessary to knot and fix the suture thread. Traditional surgical operations are performed under the condition of direct vision, and the knot is usually manually tied by the doctor. However, with the advancement of technology, various minimally invasive surgeries and interventional surgeries, such as endoscopic surgeries and transcatheter interventional surgeries, are increasingly common. These operations only need to cut a small operating window on the patient's body, so that instruments such as endoscopes or interventional catheters can be inserted into the patient's body to reach the predetermined site for treatment. In this type of operation, if it is necessary to tie or fix the sutures in the patient's body, the operator usually needs to operate outside...

AI Technical Summary

Problems solved by technology

like figure 1 As shown, since the push rod is driven so that the direction of the force when the collet presses the lock nail is opposite to the direction of the force when the lock nail is released, the force curve of the push rod has a forward and reverse cliff-like jump. There is also a cliff-like jump under the stress of the chuck; the moment the push rod is pulled back and the chuck releases the locking nail, the pushing rod will drive the chuck and the locking nail to jump violently, thus tearing the sutured tissue vigorously. There is a higher risk of the tissue being torn

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