Bending-adjustable suture line locking device

Abstract

The invention provides a bending-adjustable suture line locking device. The bending-adjustable suture line locking device comprises a clamping head, a locking nail contained at the far end of the clamping head, a push rod assembly arranged outside the clamping head, an outer supporting pipe assembly arranged outside the push rod assembly in a sleeving mode and a bending adjusting mechanism; the outer supporting pipe assembly comprises a bending adjustable section and a flexible outer pipe connected with the near end of the bending adjustable section, the bending adjustable section comprises a plurality of unit sections, and every two adjacent unit sections are rotationally connected; and the bending adjusting mechanism at least comprises one traction piece connected with the bending adjustable section, and the traction piece is axially pulled so that the bending adjustable section can be bent towards the side where the traction piece is located. The bending adjustable section has good anti-torsion performance in a bending state and is sufficient to resist acting force on the bending adjustable section when driving a push rod to enable the clamping head to be closed or opened, the bending adjustable section is prevented from twisting or swinging, and therefore the phenomena that the locking nail and a locking point are staggered and a suture line is pulled are avoided.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to an adjustable suture locking device. Background technique [0002] The operation steps of knotting and fixing the sutures are often required during the operation. Traditional surgical operations are operated under the condition of direct vision, and the knot is usually manually knotted by the doctor. However, with the advancement of technology, various minimally invasive surgeries and interventional surgeries have become increasingly common, such as laparoscopic surgery and transcatheter interventional surgeries. These surgeries only need to cut a small operating window on the patient's body, so that instruments such as an endoscope or an interventional catheter are inserted into the patient's body to reach a predetermined site for treatment. In this type of operation, if the suture in the patient needs to be knotted or fixed, the operator usually needs to operate ou...

AI Technical Summary

Problems solved by technology

Due to the need to intervene in the human body, in order to match the physiological and anatomical structure of the human body lumen, the outer tube must have a certain degree of flexibility, but the distal end of the flexible outer tube can only passively enter the body along the suture to reach the predetermined position. The bending angle required by the distal end of the upper flexible outer tube is usually relatively large. When the push rod inside is driven, the distal end of the flexible outer tube cannot provide enough support to resist the movement of the push rod on the distal end of the flexible outer tube. As a result, the distal end of the flexible outer tube will twist or swing, which will easily lead to abnormal phenomena such as dislocation between the locking nail and the locking node, pulling the suture thread, etc., and there is a risk of damaging the internal tissue and blood vessels of the patient.

Images