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Suction catheter device

A technology of suction catheter and push rod, which is applied in the fields of suction equipment, medical science, surgery, etc. It can solve the problems of long suction time and difficult thrombectomy, and achieve easy control, prevent broken thrombus from escaping, and strong crushing ability. Effect

Pending Publication Date: 2022-03-29
玮铭医疗器械(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problems of difficult thrombectomy and long suction time for larger hard thrombi during stroke patients’ thrombectomy.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. The push rod 1 and the push wire 2 are made of nickel-titanium wire, and the push wire 2 is longer than the push rod 1;

[0031] 2. The conical spiral nickel-titanium wire 4 has been shaped, the total stretched length is 5cm, the maximum diameter of shaped is 5mm, and the length is 3cm;

[0032] 3. There are fixed developing rings at both ends of the conical spiral NiTi wire 4, developing ring one 5 and developing ring two 6;

[0033] 4. One end of the conical spiral nickel-titanium wire 4 is connected to the farthest end of the push rod distal end 12, and is fixed on the push rod 1, and the most recent end is fixed on the slide ring 3;

[0034] 5. The sliding ring 3 is fixed on the push wire 2 and can slide freely on the push rod 1;

[0035] 6. The fixing ring is fixed on the push rod, the number is 3, and the fixing ring 3 7 is fixed on the 2mm near the proximal end 11 of the push rod when the tapered nickel-titanium wire 4 is fully stretched, so as to prevent the...

Embodiment 2

[0038] 1. The push rod 1 and the push wire 2 are made of nickel-titanium wire, and the push wire 2 is longer than the push rod 1;

[0039] 2. The conical spiral nickel-titanium wire 4 has been shaped, the total stretched length is 4cm, the maximum diameter of shaped is 3mm, and the length is 2cm;

[0040] 3. There are fixed developing rings at both ends of the conical spiral NiTi wire 4, developing ring one 5 and developing ring two 6;

[0041] 4. One end of the conical spiral nickel-titanium wire 4 is connected to the farthest end of the push rod distal end 12, and is fixed on the push rod 1, and the most recent end is fixed on the slide ring 3;

[0042] 5. The sliding ring 3 is fixed on the push wire 2 and can slide freely on the push rod 1;

[0043]6. The fixed ring is fixed on the push rod, the number is 5, and the fixed ring three 7 is fixed at the proximal end 2mm near the proximal end 11 of the push rod when the tapered nickel-titanium wire is fully stretched, so as to...

Embodiment 3

[0046] 1. The push rod 1 and the push wire 2 are made of nickel-titanium wire, and the push wire 2 is longer than the push rod 1;

[0047] 2. The conical spiral nickel-titanium wire 4 has been shaped, the total stretched length is 10cm, the maximum diameter of shaped is 4mm, and the length is 6cm;

[0048] 3. There are fixed developing rings at both ends of the conical spiral NiTi wire 4, developing ring one 5 and developing ring two 6;

[0049] 4. One end of the conical spiral nickel-titanium wire 4 is connected to the farthest end of the push rod distal end 12, and is fixed on the push rod 1, and the most recent end is fixed on the slide ring 3;

[0050] 5. The sliding ring 3 is fixed on the push wire 2 and can slide freely on the push rod 1;

[0051] 6. The fixing ring is fixed on the push rod, the number is 8, and the fixing ring three 7 is fixed at the proximal end 2mm near the proximal end 11 of the push rod when the tapered nickel-titanium wire is fully stretched, so a...

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Abstract

The invention relates to a suction catheter device, and belongs to the technical field of medical instruments. Comprising a pushing rod, a pushing wire, a sliding ring, a developing ring I, a developing ring II and a suction catheter, a push rod is arranged in the suction catheter in a penetrating manner; a pushing wire parallel to the pushing rod is arranged on the outer side of the pushing rod; the end head of the far end of the pushing rod is connected with one end of the pushing wire, the pushing rod on the outer side of the suction catheter is sleeved with a movable sliding ring, the pushing wire between the sliding ring and the connecting point of the end head of the pushing rod forms a spiral cone-shaped bolt breaking structure, and developing rings are arranged at the two ends of the spiral cone-shaped structure. The problems that when a cerebral apoplexy patient sucks a thrombus and sucks the thrombus, the thrombus taking difficulty is large, and the suctioning time is long are solved, and the thrombus breaking effect is good; broken thrombus can be prevented from escaping; the expansion diameter of the nickel-titanium wire used for breaking the thrombus is adjustable, and the conical spiral structure with the adjustable spiral outer diameter, length and screw pitch is easy to release and recycle.

Description

technical field [0001] The invention relates to a suction catheter device, which belongs to the technical field of medical instruments. Background technique [0002] Intravenous rt-PA thrombolysis is currently the only effective treatment for acute cerebral infarction proven by evidence-based medicine. However, the treatment time of intravenous thrombolysis is long, the damage to the ischemic brain tissue is large, and it is accompanied by the risk of hemorrhage, and the recanalization rate is very low; The recanalization rate of thrombus is only 6%, and the recanalization rate of common carotid artery thrombolysis is only about 27%. Moreover, the time window for intravenous thrombolysis is only about 4 hours. It can be seen from the above that intravenous thrombolysis alone is far from enough for cerebral artery occlusion, and intravenous thrombolysis alone is not enough to meet actual clinical needs. [0003] Mechanical thrombectomy is to deliver the thrombus remover ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/22A61M1/00
CPCA61B17/22A61B2017/22079A61B2017/22094A61B2017/22038
Inventor 朱宽王震李志刚王国辉张坤张晨朝刘锦
Owner 玮铭医疗器械(上海)有限公司
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