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Application of water absorbing material to medical tract dilator

A technology for dilators and lumens, applied in dilators, applications, medical science, etc., can solve problems such as slow water absorption, short operation time, and inapplicability, and achieve improved water absorption capacity, reduced waiting time, and improved water absorption speed Effect

Inactive Publication Date: 2013-02-13
LIAONING AIMU MEDICAL SCI&TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the water absorption speed of the above two materials is relatively slow, about several hours to 24 hours, and the waiting time for patients is longer
In addition, the operation of placing the intrauterine device, the operation time is relatively short, it seems not applicable
[0008] Based on the above background, there have been no reports of using water-absorbing materials in medical dilators so far.

Method used

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  • Application of water absorbing material to medical tract dilator

Examples

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Comparison scheme
Effect test

Embodiment 1

[0030] Take the common super absorbent polymer (SAP) as an example, pour it into a container or mold in a constant temperature water bath at 40°C-80°C for 30min-3h, and then shape it, or extrude it through extrusion equipment to make it suitable for the natural orifice of the human body. dilator. After the cavity dilator is dried, the diameter shrinks to 50%-90% of the original according to the ratio, and the shrinkage ratio is 80%. If the diameter of the mold cavity is 5.5mm, it shrinks to 4.4mm and absorbs water for 5 minutes. It can recover 5.5mm left and right, which is more suitable for the operation of placing the IUD; the water absorption can be greater than 10mm in about 2 hours, and can be used for childbirth, artificial abortion and other operations. Compared with gelatin and seaweed products, the time is greatly shortened, which can reduce the waiting time of patients time. Dimensional changes before and after water absorption of the lumen dilator of the present in...

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Abstract

The invention provides a medical tract dilator which is prepared from water absorbing resin. The water absorbing capacity and speed of the tract dilator are greatly improved; specifically, the water absorbing speed is improved so much that the waiting time of a patient can be greatly reduced; and the tract dilator is suitable for dilation during tract operation. After the tract dilator absorbs water, the surface of the tract dilator has the super-lubricity effect, so that lubricant is not needed to be coated on the tract dilator, and the tract dilator can smoothly enter a tract.

Description

technical field [0001] The present invention relates to a medical dilator, and more particularly relates to the application of water-absorbing material on the dilator of natural lumen. Background technique [0002] The present invention proposes based on following two aspects: [0003] 1. Water-absorbent resin is a functional polymer material with a large number of hydrophilic groups. With its high liquid absorption capacity, high liquid absorption speed and high liquid retention capacity, it is used in agriculture and horticulture (such as water retention agent and soil conditioner) ), industry (such as as a moisture-proof agent, oil field oil displacement agent, dehydrating agent for organic solvents, thickener, water-soluble paint, etc.), medical hygiene (such as used as sanitary napkins, baby diapers, napkins, medical ice packs, ointments, creams matrix medical materials such as medicaments, liniments, cataplasms, etc., as well as smart carriers made to control drug rel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M29/04
CPCA61L29/14A61M29/02A61B5/435
Inventor 武小锋史凤阳
Owner LIAONING AIMU MEDICAL SCI&TECH
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