Skin expander

A skin expansion and dilator technology, applied in the field of medical devices, can solve the problems of uneven upper and lower force, large wound size, etc., and achieve the effect of small size, avoiding the risk of infection, and convenient removal

Inactive Publication Date: 2017-12-15
任柯睿
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems existing in existing skin dilators such as the uneven upper and lower forces due to the action of gravity, and t

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] like figure 1 As shown, the skin dilator includes an expansion bag 1, a connecting catheter 2 and a syringe 3. The inside of the expansion bag 1 is provided with a superabsorbent resin filling 11. The syringe 3 is connected to the expansion bag 1 through a connecting catheter 2, and is used for feeding the expansion bag 1 inject liquid. The thickness of the expansion sac 1 is controlled to be 0.4mm-0.5mm, and the expanded shape is oval.

[0023] Select latex to prepare expansion sac 1, add about 100 superabsorbent resin balls with a diameter of 2.8mm in 1.5g, add 150 ml of pure water to expansion sac 1 through a syringe for 3 minutes, and expand the outer diameter of sac 1 after 5 hours Expand to about 70mm, add 30ml of absolute ethanol at the end, shrink to half of the original size after 2 hours, drain the excess water, continue to add 20ml of absolute ethanol, continue to shrink in volume, and finally reach the size taken out by the dilator , can be easily removed,...

Embodiment 2

[0025] like figure 2 As shown, the skin dilator includes an expansion bag 1 and a connecting catheter 2. The inside of the expansion bag 1 is provided with a superabsorbent resin filler 11. The expansion bag 1 communicates with the intravenous indwelling needle through the connecting catheter 2. The thickness of the expansion bag 1 is controlled to be 0.03 mm-0.05mm, the expanded shape is round.

[0026] Select polyurethane elastic material to prepare dilatation sac 1, add a superabsorbent resin filler 2 with a diameter of 10mm, and gradually add 90ml of pure water in 20 times. 20ml of saturated sodium chloride solution, the size shrinks to less than half of its original size after standing still for 2 hours. After draining excess water, continue to add 20ml of saturated sodium chloride solution, the volume continues to shrink, and finally reaches the size taken out by the dilator. It is easy to take out and reduces the risk of surgery.

Embodiment 3

[0028] like image 3 As shown, the skin dilator only consists of an expansion bag 1 and a superabsorbent resin filler 11 disposed inside the expansion bag 1 . The expansion sac 1 is made of a semipermeable membrane, the thickness of which is controlled to be 0.9mm-1.0mm, and the expanded shape is circular.

[0029] Select latex to prepare dilation sac 1, add multiple superabsorbent resin balls with a diameter of about 9mm to the expansion sac 1, then add 70ml of pure water in 10 times, after 10 hours, the diameter of the expansion sac 1 expands to more than 50mm, add saturated chlorine After sodium solution, the volume continued to shrink, and finally reached the size of the dilator, which can be easily removed and reduces the risk of surgery.

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Abstract

The invention aims at solving the problem which exists in an existing skin expander that longitudinal stress is not uniform due to the effect of gravity and overcoming the disadvantages that the trauma size is large caused by the implantation of the existing expander, and a solid skin expander which is relatively simple and reasonable to operate, safe and reliable and low in using cost is provided. To achieve the purpose, mature high water-absorbing resin in the current market is selected as filler of the expander, by utilizing the characteristic that the high water-absorbing resin is expanded after absorbing water, an expanding bag of the expander is gradually expanded, and division and expansion of skin tissues are supported. According to specific technical scheme, the skin expander comprises the expanding bag and a connecting catheter and is characterized in that high water-absorbing filler is arranged inside the expanding bag.

Description

technical field [0001] The invention belongs to the field of medical devices, and in particular provides a skin dilator. Background technique [0002] Skin and soft tissue expansion is an advanced treatment method unique to plastic surgery. Its principle is to implant a skin and soft tissue expander under the normal skin and soft tissue near the lesion, and inject liquid into the expansion bag intermittently to increase the capacity of the expander. The soft tissue generates pressure, and through the expansion mechanism, the division and proliferation of tissue and epidermal cells and the expansion of the cell gap are caused by the local effect, thereby increasing the skin area. After removing the dilated sac, the newly increased skin soft tissue can be used for tissue repair and organ reconstruction. . Usually two surgeries are required. The first surgery is the implantation of a dilator to prepare for the reconstruction and addition of skin, and the second surgery is to ...

Claims

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Application Information

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IPC IPC(8): A61B90/00A61M29/04
CPCA61M29/02A61B90/02A61M2210/04A61M2210/005
Inventor 任伊宾
Owner 任柯睿
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