Special-shaped balloon ureteral calculi blocking extractor

A ureteral calculus and extractor technology, applied in the field of medical devices, can solve the problems of lack of removal of residual calculus debris, calculus slippage, damage to ureteral mucosa, etc., and achieve the effects of preventing calculus slippage and omission, reducing calculus incarceration, and reducing the incidence rate.

Active Publication Date: 2016-08-24
SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current ureteroscopic lithotripsy also has certain deficiencies: 1. Stones and stone fragments in the middle and upper ureters are easily washed back into the kidney by the perfusion water flow or the recoil force of the lithotripsy tool; 2. Residual stone fragments in the ureter lumen Lack of quick and effective way to remove
However, it cannot completely block the lumen of the ureter, especially during the process of dragging stones, the shape of the device is likely to change due to water injection into the working channel of the endoscope, causing the stones to slip between the device and the ureter wall, or Due to the large number of broken stones, the stones and the occluder are embedded in the ureter, and there is a risk of damage to the ureteral mucosa
In addition, the existing membranous occluders or balloons are often too large in size, which is not as convenient as a stone basket during placement, and it is easier to push stones back to the kidney
[0006] To sum up, there is an urgent need for a ureteral calculus blocking extractor that is easy to place, not easy to cause stone displacement, not easy to deform when removing gravel, completely blocked, not easy to cause stone incarceration and damage the ureter wall, and convenient to remove stones. However, there are no reports on such devices

Method used

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  • Special-shaped balloon ureteral calculi blocking extractor
  • Special-shaped balloon ureteral calculi blocking extractor
  • Special-shaped balloon ureteral calculi blocking extractor

Examples

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Embodiment 1

[0035] Please refer to figure 1 , figure 1 It is a structural schematic diagram of the special-shaped balloon type ureteral calculus blocking extractor of the present invention. The ureteral calculi blocking remover is provided with an operating rod 1, and the operating rod 1 is a cylindrical hollow tube with an open proximal end and a closed distal end. The outer periphery of the proximal section 11 of the operating rod is provided with a handle 2 . A guide head 3 is provided on the top end of the distal section 12 of the operating rod, and the guide head 3 is hemispherical.

[0036] Please refer to figure 2 , figure 2 yes figure 1 Enlarged view of A. The distal section 12 of the operating rod is provided with a fitting groove 4 at the position behind the guide head 3 , and the fitting groove 4 surrounds the operating rod 1 for a week. The fitting groove 4 is provided with an annular balloon 5 , the balloon 5 surrounds the fitting groove 4 , and the plane where the b...

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PUM

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Abstract

The invention relates to a special-shaped balloon-type ureteral calculi blocking extractor, which is provided with a hollow operating rod with an open proximal end and a closed distal end. The distal end section of the operating rod is provided with a fitting groove. A ring-shaped balloon is provided, and a blocking film is provided on the periphery of the balloon, and the blocking film surrounds the periphery of the balloon at least once, and the inside of the balloon communicates with the cavity of the operating rod. The ureteral calculus blocking remover of the present invention is small in size, easy to be inserted into the ureter, does not push the calculus retrograde to the kidney and causes ureteral wall damage, and can completely block the ureter, effectively preventing calculus and calculus fragments from being washed back into the kidney by perfusion water. Stone incarceration is not easy to occur, and the process of dragging and removing stones is not easy to deform and rub against the ureteral wall, and all stones can be removed at one time to achieve the purpose of efficient stone removal.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a special-shaped balloon-type ureteral calculus blocking extractor. Background technique [0002] The incidence of urinary stones is as high as 5%-10%, which can be found in any part of the kidney, bladder, ureter and urethra, and kidney and ureter stones are the most common. Ureteroscopic lithotripsy is carried out through the natural orifice of the human body. It has the advantages of minimally invasive and accurate lithotripsy, and is currently one of the main treatment methods for ureteral calculi. However, the current ureteroscopic lithotripsy also has certain deficiencies: 1. Stones and stone fragments in the middle and upper ureters are easily washed back into the kidney by the perfusion water flow or the recoil force of the lithotripsy tool; 2. Residual stone fragments in the ureter lumen There is no quick and effective way to take it out. [0003] Blocking the upper part...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/221
CPCA61B17/22A61B2017/22067A61B17/221A61B17/22032A61B17/22031A61B2017/22035
Inventor 孙颖浩
Owner SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY
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