CN202619801U

CN202619801U - Cerebral thrombosis resecting device

Info

Publication number: CN202619801U
Application number: CN 201220214523
Authority: CN
Inventors: 曾延华; 窦允冲; 陈旭东; 彭文涛; 李赛斯; 周怀其; 黄柯; 李明
Original assignee: HUNAN EVD MEDICAL DEVICE CO Ltd
Current assignee: HUNAN EVD MEDICAL DEVICE CO Ltd
Priority date: 2012-05-14
Filing date: 2012-05-14
Publication date: 2012-12-26
Anticipated expiration: 2022-05-14

Abstract

The utility model discloses a cebral thrombosis resecting device which comprises a guide wire, a nickel-titanium ring, sliding rings, a fixing mark and a tungsten wire spring ring, wherein the tungsten wire is welded to the end head of the guide wire, two ends of the nickel-titanium ring are welded to the sliding ring, the sliding ring is installed on the guide wire in a sleeved mode, the fixing mark is installed between two sliding rings and the fixing mark is installed on the guide wire near the tungsten wire spring ring. A resecting part of the front end of the cerebral thrombosis resecting device has a good shape memory and a switching performance, and thereby the resecting part can be forward delivered, pushed off and pulled back inside a mini and micro catheter. And the resecting part can be rapidly switched from a straight-line shape into a circular shape when pushed out from the mini and micro catheter to resect thrombus inside a blood vessel.

Description

The cerebral thrombosis resectoscope

Technical field

This utility model relates to a kind of endovascular thrombectomy device, particularly a kind of cerebral thrombosis resectoscope.

Background technology

The interior thrombosis that takes place of blood vessel tortuous and that caliber is tiny in the brain, promptly the thrombosis in the cerebral artery vessel is a kind of acute ischemia of human central nervous system burst.When cerebral thrombosis takes place; Because local brain tissue is because of the angiemphraxis ischemia; Neural activity and important physical function are on the hazard, if can not in time remove endovascular obstruction, make blood flow unobstructed; Therefore dysfunction will take place or lose its function in the cerebral tissue of ischemic area, even serious threat patient's life.Yet; The clinical medical treatment of generally implementing can't be removed thrombosis, unblocking fast at present; Its dilatation of taking, anticoagulant, thromboembolism treatment except that weak curative effect, also exist the treatment time window qualification, possibly cause tissue reperfusion damage even organize hemorrhage serious consequence.The sucking-off longed for of suction therapy blocks that thrombosis is then many selectively to arrive diseased region and suction effect is not good is difficult to prove effective because of surpassing.Therefore, the acute tissue ischemia that little blood vessel acute occlusion causes in the brain still is the difficult problem in the clinical medicine treatment.

Summary of the invention

In order to solve the above-mentioned technical problem that little blood vessel acute occlusion treatment exists in the existing brain, this utility model provides a kind of simple in structure, easy to use, cerebral thrombosis resectoscope efficiently.This utility model is mainly formed by the Ultimum Ti material, can in tortuous sinuous little blood vessel, push smoothly, and the resectoscope part can realize fast configuration conversion repeatedly to the large diameter pipe intracavity at minor diameter.

The technical scheme that this utility model solves the problems of the technologies described above is: a kind of cerebral thrombosis resectoscope; Comprise seal wire, NiTi circle, slip ring, fixing mark, tungsten filament turn; Said tungsten filament turn is welded on the front end of seal wire, and the two ends of NiTi circle are welded on the slip ring, and slip ring is sleeved on the seal wire; Be provided with fixing mark between two slip rings, fixedly mark is located on the seal wire near the tungsten filament turn.

The technique effect of this utility model is: the elongated portion of this utility model is to have a hyperelastic seal wire, and the utmost point is beneficial to carry through tortuous blood vessel and moves ahead and super-selective reaches diseased region; The cut-out of this utility model front end has good formative memory and conversion performance; Its conveying that can in tiny microtubular, move ahead, release and post-tensioning are regained; And after pushing out microtubular, be converted into round by the linearity in the pipe apace, with endovascular thrombectomby, remove angiemphraxis; Reach the rescue cerebral tissue, the purpose of protection brain function.

Description of drawings

Fig. 1 is the structural representation of this utility model.

Fig. 2 is the vertical structure sketch map of NiTi circle in this utility model.The seal wire 5 of this apparatus, NiTi circle 4, slip ring 3, fixing mark 2.

The configuration conversion sketch map repeatedly fast of NiTi circle when Fig. 3 uses for this utility model.

The tungsten filament turn 1 of microtubular 6, seal wire 5, NiTi circle 4, slip ring 3, fixing mark 2, seal wire part front end.

Fig. 4 is form and the structure of resectoscope after microtubular is seen off in this utility model, the tungsten filament turn 1 of microtubular 6, seal wire 5, NiTi circle 4, slip ring 3, seal wire part front end.

Fig. 5 draws in thrombosis for this utility model the sketch map of collecting pipe.Collecting pipe 7, microtubular 6, seal wire 5, tungsten filament turn 1.

The specific embodiment

Referring to Fig. 1, this utility model comprises tungsten filament turn 1, fixing mark 2, slip ring 3, NiTi circle 4, seal wire 5.Said tungsten filament turn 1 is welded on the termination of seal wire 5; The two ends of NiTi circle 4 are welded on the slip ring 3; Slip ring 3 is sleeved on the seal wire 5, is provided with fixing mark 2 between two slip rings 3, on the seal wire 5 that fixing mark 2 is located near the tungsten filament turn; Fixing mark loca is 40 millimeters to 60 millimeters apart from the distance of seal wire termination, adds weldering on the seal wire 5 or weld becate to form fixing mark 2.

Referring to Fig. 2, Fig. 2 is the vertical structure of NiTi circle in this utility model, from figure, can find out that NiTi circle 4 is the bung flange shape.

In this utility model, it is 0.15 millimeter to 0.35 millimeter super-elasticity NiTi silk that seal wire 2 adopts diameters, and its length is 1 meter 5 to 2 meter five, and 10 centimetres to 30 centimetres of front ends are processed into 0.1 millimeter to 0.2 millimeter taper thin segment gradually through centerless grinder.NiTi circle 4 adopt diameters be 0.15 millimeter to 0.25 millimeter memory performance titanium-nickel wire typing to be made into diameter be 3 millimeters to 6 millimeters bung flange shape, it is that 0.2 millimeter to 0.4 millimeter, length are on 0.2 millimeter to 2 millimeters the rustless steel or platinum slip ring 3 that the two ends of NiTi circle 4 are welded on internal diameter.Tungsten filament turn 1 be adopt diameter to be 0.02 millimeter to turn to internal diameter to 0.1 tungsten filament through precision spring coiling machine be 0.15 millimeter to 0.35 millimeter turn.Slip ring is that internal diameter is that 0.2 millimeter to 0.4 millimeter, length are 0.2 millimeter to 2 millimeters rustless steel or platinum ring.

Referring to Fig. 3,4,5, can find out among the figure that NiTi circle 4 becomes a straight line in microtubular 6 when delivery, so that delivery.When NiTi circle 4 stretches out microtubular 6, will revert to the bung flange shape again, as shown in Figure 4.Draw like this and send seal wire 5, thrombosis is drawn in the collecting pipe 7 with regard to available NiTi circle 4, as shown in Figure 5.

The operation principle of this utility model: hemostasis sheath pipe is inserted in inguinal region local anesthesia puncture down, and 5F to 8F collecting pipe X line is sent into common carotid artery, internal carotid artery or internal carotid artery sea hole section under keeping watch on, and microtubular gets into small artery in the brain under the micro-wire guiding.After collecting pipe or microtubular inject contrast agent and confirm that microtubular is near the thrombosis place, the cerebral thrombosis resectoscope is sent into through microtubular.Cooperate through microtubular and cerebral thrombosis resectoscope front end tungsten filament section, microtubular passes through thrombosis.The cerebral thrombosis resectoscope is seen off from microtubular, and promptly visible resectoscope is the circle shape and opens.Draw microtubular and resectoscope outward in the lump simultaneously downwards, can thrombosis be drawn in the collecting pipe 7.This process can heavily be obeyed, and is complete to guarantee thrombectomby.

Claims

1. cerebral thrombosis resectoscope; It is characterized in that: comprise seal wire, NiTi circle, slip ring, fixing mark, tungsten filament turn; Said tungsten filament turn is welded on the termination of seal wire, and the two ends of NiTi circle are welded on the slip ring, and slip ring is sleeved on the seal wire; Be provided with fixing mark between two slip rings, fixedly mark is located on the seal wire near the tungsten filament turn.

2. cerebral thrombosis resectoscope according to claim 1 is characterized in that: said seal wire employing diameter is 0.15 millimeter to 0.35 millimeter a super-elasticity NiTi silk, and its length is 1.5 meters to 2.5 meters.

3. cerebral thrombosis resectoscope according to claim 1 is characterized in that: 10 centimetres to 30 centimetres of the front ends of said seal wire are with 0.1 millimeter to 0.2 millimeter taper of centerless grinder processing thin segment gradually.

4. cerebral thrombosis resectoscope according to claim 1 is characterized in that: said NiTi circle is that to use diameter be that to be made into diameter be 3 millimeters to 6 millimeters spiral coil for 0.15 millimeter to 0.25 millimeter memory performance titanium-nickel wire.

5. cerebral thrombosis resectoscope according to claim 1 is characterized in that: said tungsten filament turn is that to use 0.02 millimeter to 0.1 millimeter tungsten filament to turn to internal diameter be 0.15 millimeter to 0.35 millimeter turn.

6. cerebral thrombosis resectoscope according to claim 1 is characterized in that: said slip ring is that internal diameter is that 0.2 millimeter to 0.4 millimeter, length are 0.2 millimeter to 2 millimeters rustless steel or platinum ring.