Double-balloon injection catheter instrument for blood vessel thrombolysis

An injection catheter and double balloon technology, applied in the direction of balloon catheters, catheters, coatings, etc., can solve the problems of low embolus dissolution rate and inability to effectively improve the efficiency of thrombolysis, so as to avoid hemorrhagic complications and increase blood pressure. The effect of high contact rate

Active Publication Date: 2021-06-08
THE AFFILIATED HOSPITAL OF GUIZHOU MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the above two catheters use drug penetration for thrombolysis. The small contact area between the embolus and the drug leads to a low dissolution rate of the embolus, which cannot effectively improve the efficiency of thrombolysis, thereby improving the effectiveness of the drug.

Method used

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  • Double-balloon injection catheter instrument for blood vessel thrombolysis
  • Double-balloon injection catheter instrument for blood vessel thrombolysis
  • Double-balloon injection catheter instrument for blood vessel thrombolysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] figure 1 It is a schematic structural diagram of a double-balloon injection catheter device for vascular thrombolysis provided according to a preferred embodiment of the present invention. In this drawing, the distal end refers to the lower end, and the proximal end refers to the upper end.

[0057] Such as figure 1 , 2 , 4, the double-balloon injection catheter apparatus for vascular thrombolysis of the present invention includes an injection catheter 1, a balloon 2 that is sheathed on the outside of the injection catheter 1 and a lumen 3 that is arranged on the inside of the injection catheter 1,

[0058] Such as figure 1 As shown, the injection catheter 1 includes a first catheter segment 11, a second catheter segment 12 and a drug injection catheter segment 13 connected between the first catheter segment 11 and the second catheter segment 12.

[0059] Such as Figure 9 As shown, the drug injection catheter section 13 includes: a first connecting piece 131 and a...

Embodiment 2

[0073] This embodiment is basically the same as Embodiment 1, the difference is:

[0074] Such as figure 2 As shown, the drug injection catheter section 13 also includes two bellows 137, the bellows 137 are arranged on the first catheter section 11 between the first balloon 21 and the first connecting piece 131, and / or the second balloon 22 On the second conduit segment 12 between the second connecting piece 132, it is used to buffer the impact force generated by the electrification deformation film 133 when the power is turned on and off. Since the buffer bellows 137 is added in the axial direction, it can make the electrification deformation The membrane 133 moves the position of the balloon 2 when it expands and contracts in the axial direction after being energized.

Embodiment 3

[0076] This embodiment is basically the same as Embodiment 2, the difference is:

[0077] Such as figure 2 As shown, the outflow hole 312 is provided on the radially outer periphery of the tip portion 311. When the injection catheter 1 passes through the embolus 5, accumulation is likely to occur at the axial end of the tip portion 311, which may cause blockage. In order to avoid this situation, it is preferable to open the outlet hole 312 on the radial outer periphery of the tip portion 311 .

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Abstract

The invention discloses a double-balloon injection catheter instrument for blood vessel thrombolysis. The double-balloon injection catheter instrument comprises an injection catheter, balloons arranged on the outer side of the injection catheter in a penetrating and sleeving mode and a cavity channel formed in the injection catheter, wherein the injection catheter comprises a first catheter section, a second catheter section and a medicine injection catheter section connected between the first catheter section and the second catheter section, the medicine injection catheter section is provided with a power-on deformation film capable of being powered on and powered off to expand and contract and further provided with an injection head used for being punctured into an embolus. According to the double-balloon injection catheter instrument for the blood vessel thrombolysis, a first balloon and a second balloon are used for blocking the region where the embolus is located to form a closed treatment space, and the injection head on the medicine injection catheter section can obliquely pierce into the embolus and directly inject medicine into the embolus; meanwhile, by means of the characteristic that the power-on deformation film on the medicine injection catheter section can expand after being powered on and can recover after being powered off to generate contraction, and disturbance is conducted in the closed treatment space, so that contact rate of the embolus and thrombolysis medicine is increased, and the embolus is rapidly collapsed.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a double-balloon injection catheter device for vascular thrombolysis. Background technique [0002] Ischemic stroke often occurs due to vascular embolism. Due to the phenomenon of reduced blood perfusion in the patient's brain tissue, in severe cases, the blood flow may even be completely interrupted and stopped. The brain tissue disintegrates and destroys, causing cerebral thrombosis and cerebral embolism, and its disability rate and mortality rate are extremely high. [0003] At present, the treatment methods for such diseases mainly include intravenous thrombolytic therapy and arterial thrombolytic therapy. Strong, prone to side effects of systemic bleeding during the application process, there is a certain risk of medication. Arterial thrombolysis is a new type of treatment plan, mainly guided by X-rays, using a microcatheter to insert the carotid artery and femoral...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/22A61M25/10C08J7/04C08J7/044C08J5/18C08L33/04
CPCA61M25/1011A61M25/0023A61M25/1027A61B17/22C08J5/18A61M2025/109A61B2017/22079A61B2017/22084C08J2333/04C08J2401/02
Inventor 黄智周石张帅
Owner THE AFFILIATED HOSPITAL OF GUIZHOU MEDICAL UNIV
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