Novel thrombus cleaning device

A technology of clearing device and thrombus, which is applied in the field of thrombus clearing device, can solve the problems of difficult to satisfy precise and complex surgery, high risk of surgical operation, high cost of surgery, etc., shorten the course of thrombus clearing and improve the quality of thrombus clearing , design and manufacture simple effects

Inactive Publication Date: 2009-06-10
冷劲松
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When medical treatment is ineffective, vascular thrombectomy or femoral vein cross bypass surgery should be performed, but these surgical procedures are extremely risky and expensive
Regarding how to effectively remove thrombus through surgery, some scholars have proposed to use a metal mechanical expansion structure to remove thrombus. However, due to the very narrow vascular cavity, this requires that the size of the removal structure must be micron. Therefore, this metal mechanical structure It is extremely difficult to design, and it is difficult to meet the requirements of precise and complex surgical operations

Method used

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specific Embodiment approach 1

[0015] Specific implementation mode one: combine figure 1 , figure 2 , image 3 and Figure 4 To illustrate this embodiment, the novel thrombus remover of this embodiment is made through the following steps: the shape memory material micro-actuator 1 is solidified and processed into a helical shape; it is heated above the softening temperature (Tg) of the shape memory polymer and stretched , cool it while maintaining the tensile restraint state, after cooling, the elastic modulus of the shape memory material micro-driver 1 increases, the material hardens, and the shape of the straight bar is fixed; it is connected with the micro-connector 2 in the micro-catheter; it is loaded into the micro-catheter 3 tip. During the working process of the thrombus remover, after the tip of the microcatheter 3 passes through the thrombus 4, the shape memory material microdriver 1 is partially pushed out of the microcatheter 3 under the push of the microconnector 2. Under the action of exte...

specific Embodiment approach 2

[0016] Embodiment 2: This embodiment differs from Embodiment 1 in that the material of the micro-actuator 1 is a shape memory polymer material. Including styrene-based shape-memory polymers, epoxy-based shape-memory polymers, cyanate-based shape-memory polymers, shape-memory polyurethanes, shape-memory polyesters, shape-memory styrene-butadiene copolymers, shape-memory reflective One of formula polyisoprene or shape memory polynorbornene. The micro connector 2 is an optical fiber material. The heating of the shape memory material micro-actuator 1 relies on heating it through the optical fiber to achieve the purpose of shape recovery.

specific Embodiment approach 3

[0017] Embodiment 3: This embodiment differs from Embodiment 1 in that the material of the shape memory polymer material micro-actuator 1 is a magnetic particle reinforced shape memory polymer material. Shape memory polymers include styrene-based shape-memory polymers, epoxy-based shape-memory polymers, cyanate-based shape-memory polymers, shape-memory polyurethanes, shape-memory polyesters, shape-memory styrene-butadiene copolymers , shape memory trans polyisoprene or shape memory polynorbornene. Magnetic particles include Ni powder particles, Fe powder, Fe 3 o 4 one or a mixture of two or more. The micro connector 2 is an optical fiber material. The shape memory material micro-driver 1 is heated by applying an alternating magnetic field from the outside to achieve the purpose of shape recovery.

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Abstract

A novel thrombus cleaning apparatus, the invention relates to a thrombus cleaning apparatus of surgical operation in order to solve the problem that the accurate and complicated surgical operation is difficult to perform in a narrow blood vessel cavity. The thrombus cleaning apparatus comprises a shape memory material minitype driver 1, a minitype connector 2 and a minitype vessel 3, the shape memory material minitype driver 1 and the minitype connector 2 are connected and mounted in the minitype vessel 3 together. The invention has simple design and manufacture, can satisfy the requirement that the accurate and complicated surgical operation can be performed in the narrow blood vessel cavity.

Description

technical field [0001] The invention relates to a thrombus cleaner for vascular surgery. Background technique [0002] The stasis of thrombus in human blood vessels is a common cardiovascular disease. Thrombosis narrows or occludes the blood vessel lumen. If the treatment is not timely or the method is not appropriate, it will seriously affect the life of the patient or even directly endanger his life. However, due to technical reasons, the traditional treatment is to use drugs to dissolve the thrombus. If you take thrombolytic, anticoagulant or vasodilator drugs directly, the effect will not be obvious for a long time; or intravenous injection, but the general course of treatment is long, but generally Traditional drugs are only aimed at patients at a certain stage, and the treatment cycle is long, the treatment process is painful, and the effect is slow. If the method of intubating local drug administration is used, there are many intubating tubes, and it takes a long ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/22A61L31/00
CPCA61B2017/00871
Inventor 冷劲松刘彦菊兰鑫王肖华
Owner 冷劲松
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