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A dual-balloon injection catheter device for vascular thrombolysis

An injection catheter and double balloon technology, applied in balloon catheters, catheters, surgery, etc., can solve the problems of inability to effectively improve the efficiency of thrombolysis and the low speed of thrombolysis, so as to avoid hemorrhagic complications, increase The effect of contact

Active Publication Date: 2022-03-08
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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  • A dual-balloon injection catheter device for vascular thrombolysis
  • A dual-balloon injection catheter device for vascular thrombolysis
  • A dual-balloon injection catheter device for vascular 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 device for vascular thrombolysis, which comprises an injection catheter, a balloon sheathed on the outside of the injection catheter and a lumen arranged inside the injection catheter. The injection catheter includes a first catheter segment, The second catheter segment and the drug injection catheter segment connected between the first catheter segment and the second catheter segment, the drug injection catheter segment is provided with an electrified deformable membrane that can be expanded and contracted by turning on and off the electricity, and is also provided with a plug for piercing sub injection head. The present invention uses the first balloon and the second balloon to block the area where the embolus is located into a closed treatment space, and the injection head on the drug injection catheter section can penetrate into the embolus at an oblique angle and inject the medicine directly into the embolus. At the same time, the deformable film on the drug injection catheter section can be energized and expanded to recover when the power is turned off, so as to produce contraction. The closed treatment space is disturbed, thereby increasing the contact rate of emboli and thrombolytic drugs, and quickly disintegrating emboli. .

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 Patents(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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