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Double-cannula-type fistula-creating catheter

A cannula type and fistula tube technology, which is applied in the field of medical devices to achieve the effects of increasing the drainage area, effective hemostasis, and good drainage effect.

Active Publication Date: 2016-02-24
THE FIRST AFFILIATED HOSPITAL OF CHONGQING MEDICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned problems in the prior art and aim at the hemostasis problem existing in the current percutaneous nephrolithotripsy process, the present invention provides a double-sleeved fistula tube with effective hemostasis

Method used

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  • Double-cannula-type fistula-creating catheter
  • Double-cannula-type fistula-creating catheter
  • Double-cannula-type fistula-creating catheter

Examples

Experimental program
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Embodiment Construction

[0040] Aiming at the hemostasis problem existing in the current percutaneous nephrolithotripsy process, the present invention provides a double-sleeved fistula tube with practical and effective hemostasis, such as figure 2 As shown, the ostomy tube includes an inner drainage tube 1, an outer tube 2, a balloon 3 and an injection channel 4;

[0041] The length of the outer tube 2 is less than the length of the inner drainage tube 1, and the two ends of the outer tube 2 are respectively provided with through holes for the inner drainage tube 1 to pass through, and the outer tube 2 passes through the through holes. The hole is sleeved on the inner drainage tube 1, and the outer tube 2 can slide on the inner drainage tube 1 along its axial direction;

[0042] The airbag 3 includes a first airbag 31, and the first airbag 31 is arranged at the front end of the outer wall of the inner drainage tube 1;

[0043] The liquid injection channel 4 includes a first liquid injection channel ...

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Abstract

The invention relates to a double-cannula-type fistula-creating catheter. The double-cannula-type fistula-creating catheter comprises an inner drainage tube, an outer tube, an air bag and a liquid injection channel. The length of the outer tube is less than that of the inner drainage tube. Two ends of the outer tube are provided with through holes allowing the inner drainage tube to penetrate. The outer tube is arranged on the inner drainage tube in a sleeving mode by means of the through holes. The outer tube can slide into the inner drainage tube along an axial direction of the outer tube. The air bag comprises a first air bag arranged at the front end of the outer wall of the inner drainage tube. The liquid injection channel comprises a first liquid injection channel which is arranged in the tube wall of the inner drainage tube and communicated with the first air bag.

Description

technical field [0001] The invention belongs to the field of medical equipment, and in particular relates to a double-sleeved fistula tube. Background technique [0002] Percutaneous nephrolithotomy is a modern minimally invasive technique for the treatment of urinary calculi. It is one of the most commonly used treatment methods for renal and ureteral calculi in urology. It has the advantages of small trauma, high stone clearance rate, and small renal function damage. , but there is also a risk of severe bleeding and infection. In percutaneous nephrolithotomy, it is necessary to puncture and dilate between the skin and the calices to establish a stoma channel, then insert a sheath (peeled sheath) and use the channel in the tube for surgical operations. A nephrostomy tunnel is inserted to drain urine and compress to stop bleeding. Since the diameter of the nephrostomy tube must be smaller than the diameter of the sheath tube and the nephrostomy channel to be inserted into ...

Claims

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Application Information

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IPC IPC(8): A61M25/10A61B17/00A61B17/12A61M1/00A61M29/02
Inventor 陈勇苟欣何卫阳
Owner THE FIRST AFFILIATED HOSPITAL OF CHONGQING MEDICAL UNIVERSITY
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