Blood purifier

Abstract

The invention relates to the field of medical instruments, in particular to a blood purifier, and belongs to the combined use of medical instruments and angiocardiography machines. The blood purifier comprises a top cover, traction ropes, a membrane-coated purification frame, a siphon, a valve shaped like a Chinese character 'bu ', a stop valve and a tow rope. When the membrane-coated purification frame enters blood vessels to change into a barrel-shaped body with parabolic generatrix from a hollow cylinder and rotates and moves around the axis, the membrane-coated purification frame separates thrombus and impurities from blood, the separated blood flows back to the blood vessel, and the thrombus and the impurities are discharged out of the body through the siphon. The barrel-shaped body is restored to be a hollow cylinder under the action of elastic force of ribs of the barrel-shaped body of the membrane-coated purification frame and loosening of the tow rope through the valve shaped like a Chinese character 'bu ', besides, the membrane of the membrane-coated purification frame enters a rib groove under the pulling force of the traction ropes, and the membrane-coated purification frame leaves the human body.

Description

technical field [0001] The invention relates to a blood purifier, relates to the field of medical instruments, and belongs to the joint use of medical instruments and cardiovascular imaging machines. Background technique [0002] There are two kinds of thrombus removal machines, one: the thrombus removal machine is a point that moves forward to form a line through the thrombus to form a spherical net, and the net contains spherical bodies; one end of the spherical net forms a cone in the thrombus, and the other side of the thrombus also Points move forward to form a disc body, the outer surface of the disc body sticks to the inner wall of the blood vessel to prevent the thrombus from overflowing, and the inner surface of the disc is a cone hole, when one end of the spherical net moves backward in the thrombus inner cone, it will cause Three kinds of defects of thrombus deformation: a) The conical hole of the thrombus expands in the radial direction, causing the thrombus to e...

AI Technical Summary

Problems solved by technology

[0002] There are two kinds of thrombus removal machines, one: the thrombus removal machine is a point that moves forward to form a line through the thrombus to form a spherical net, and the net contains spherical bodies; one end of the spherical net forms a cone in the thrombus, and the other side of the thrombus also Points move forward to form a disc body, the outer surface of the disc body sticks to the inner wall of the blood vessel to prevent the thrombus from overflowing, and the inner surface of the disc is a cone hole, when one end of the spherical net moves backward in the thrombus inner cone, it will cause Three kinds of defects of thrombus deformation: a) The conical hole of the thrombus expands in the radial direction, causing the thrombus to embed into the blood vessel and scratch the blood vessel; B, the conical hole of the thrombus expands to rupture the thrombus, and the ruptured thrombus scratches the blood vessel; C, the conical hole of the thrombus expands and the spherical network The role is to break the thrombus into pieces and move to the tapered hole in the disc body and get stuck between the ball shape

Two: The thrombus removal machine moves forward to form a line through the thrombus and becomes a cylinder. The outer surface of the cylinder is attached to the inner wall of the blood vessel, and a toothed disc is formed on the side of the cylinder and the thrombus. The toothed disc is to prevent thrombus. The cutting process rotates, and the outer surface of the cylinder is formed on the other side of the thrombus to stick to the inner wall of the blood vessel to prevent the thrombus from overflowing. The cylinder forms a rotating cutter on the side of the thrombus, which rotates and moves forward to cut the thrombus. After the thrombus is cut, the blood vessel loses its support and the blood vessel shrinks inward. Scratched by the rotating cutter head; the rotating cutter head becomes a clamp to clamp the thrombus. Because the volume of the clamp occupies the blood vessel space, the clamp can only clamp the thrombus into pieces, and the thrombus cannot be completely removed. The volume is larger than before deformation, which does not conform to the principle that the total volume of the object remains unchanged before and after deformation. The thrombus removal machine uses a screw conveyor. The screw of the screw conveyor is coaxial with the cylinder and the rotary cutter head. Does not conform to the principle of feeding on the outer surface of the screw

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