Suture line locking device

Abstract

The invention provides a suture line locking device. The suture line locking device comprises an implantation assembly and a releasing assembly; the implantation assembly comprises an expansion and shrinkage elastic piece; an expansion and shrinkage threading channel, which penetrates through the expansion and shrinkage elastic piece in the axial direction and can expand and shrink in the radial direction of the expansion and shrinkage elastic piece, is formed in the expansion and shrinkage elastic piece; the releasing assembly is provided with a threading cavity penetrating in the axial direction of the releasing assembly; at least part of the releasing assembly stretches into the expansion and shrinkage threading channel so as to be detachably connected with the implantation assembly; asuture line penetrates into the threading cavity and the expansion and shrinkage threading channel; and the implantation assembly and the releasing assembly are constructed in the mode that: when thereleasing assembly stretches into the expansion and shrinkage threading channel, the expansion and shrinkage threading channel expands, so that the suture line is suitable for penetrating into the expansion and shrinkage threading channel to move; and when the releasing assembly is separated from the expansion and shrinkage threading channel, the expansion and shrinkage threading channel contractsto lock the suture line. According to the suture line locking device disclosed by the invention, the occupied operation channel is small when the suture line is locked; furthermore, the locking reliability is high; and the operation risk can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a suture thread locking device. Background technique [0002] Minimally invasive and interventional procedures are increasingly common, and sutures often need to be knotted or locked during the procedure. Knotting or locking the sutures inside the patient during such procedures typically needs to be done in a small, flexible remote channel. [0003] The prior art discloses a suture locking device, which adopts a rigid collet to clamp the locking nail, so as to achieve the purpose of locking the suture. However, when this locking device needs to be applied to a smaller operation channel, due to the limitation of the size of the parts, the clamping force provided is not enough to clamp the suture, or, because the external operation space required by the locking device is too large , It is difficult to lock in a tiny channel, and the locking is unreliable, which increa...

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