Sheath pipe cap and endoscope guide sheath with same

Abstract

The invention discloses a combination set for calculus breaking and removing treatment for calculi in the human body cavity. The set comprises a shell lantern ring and a cylinder coaxially fixed to the inner surface of one end of the shell lantern ring, the cylinder is internally provided with a mechanical channel straight hole and a water spray channel straight hole which are parallel to the axial direction of the cylinder, and a sheath pipe cap is provided with a water spray channel oblique hole which is communicated with the water spray channel straight hole and can spray water to the lateral front of the sheath pipe cap. By designing the combined hole structure mode of the water spray channel straight hole and the water spray channel oblique hole on the sheath pipe cap, water flow entering from an endoscope guide sheath can be sprayed to the front face and the side face of calculus point in front of the sheath pipe cap simultaneously, while broken calculi at the calculus point aresubjected to multi-angle washing to increase the probability that the broken calculi get away from the calculus point, water flow in the front direction and water flow in the side direction of the sheath pipe cap interact with each other to form a vortex, the broken calculi are further separated from the calculus point under the action of the vortex, the separation probability of the broken calculi and the calculus point is greatly increased, and the washing effect of the water flow to the broken calculi is guaranteed.

Description

technical field [0001] The invention relates to the technical field of medical devices for human diseased tissues, in particular to a sheath cap used for calculus in a human cavity and an endoscope guide sheath with the sheath cap. Background technique [0002] The current method of surgical treatment of diseased tissue in the human cavity has changed from traditional open surgery to minimally invasive surgery. The operation method of minimally invasive surgery for calculus is mainly to establish a channel, observe in real time under the endoscope, and carry out lithotripsy and stone removal by holmium laser. The commonly used treatment instrument is an endoscope guide sheath, which guides the holmium laser through the natural cavity of the human body to enter the human body to crush the stones, and some stones that cannot be pulverized can enter the instrument cavity through the sleeve blue The granular stones are taken out of the body in the kidney. In the lithotripsy op...

AI Technical Summary

Problems solved by technology

In the lithotripsy operation, it is necessary to inject water into the calculus through the water spray joint of the endoscope guide sheath, so that the gravel can be separated from the calculus point after being washed by the water flow, so that the gravel can be taken out from the instrument cavity with the set stone basket Or let the broken stones be naturally discharged from the body along with the passage of the human body. However, due to the tight connection between the broken stones and the stones, it is difficult to discharge the broken stones after being pulverized by the holmium laser. pain

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