CN201996967U - Negative pressure drainage trauma care device - Google Patents
Negative pressure drainage trauma care device Download PDFInfo
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- CN201996967U CN201996967U CN2011200296464U CN201120029646U CN201996967U CN 201996967 U CN201996967 U CN 201996967U CN 2011200296464 U CN2011200296464 U CN 2011200296464U CN 201120029646 U CN201120029646 U CN 201120029646U CN 201996967 U CN201996967 U CN 201996967U
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- negative pressure
- pressure drainage
- foam
- chitosan
- medical
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Abstract
The utility model discloses a negative pressure drainage trauma care device. The device comprises a medical foam 1 and a draft tube 2, wherein one end of draft tube 2 is inserted into the medical foam 1, small holes 3 are arranged on the tube wall of the draft tube inside the medical foam, and the medical foam is made of the composite foam material of PVA (Poly Vinyl Alcohol) and chitosan. The negative pressure drainage trauma care device adopts the composite foam material of PVA and chitosan, not only has the original functions and properties, but also has various biological effects of chitosan and the derivants of the chitosan such as inhibiting microbial growth, promoting wound healing, hemostasis, relieving pain etc.
Description
Technical field
This utility model relates to a kind of negative pressure drainage and protects the wound device, belongs to medical instruments field.
Technical background
Negative pressure drainage of the present utility model protects the wound device and is applicable to the negative-pressure sealed drainage technology.The negative-pressure sealed drainage technology is to wrap up at drainage tube external medical foam, make foamed materials become drainage tube and by the intermediary between drain lacuna or the wound surface, utilize semi permeability sticking film sealing by the drain district again with biological valve function, make it to be hedged off from the outer world, connect high negative pressure source (125～450mmHg), form an efficient drainage system, remove in time by the exudate in drain district.This technology is the revolutionary character innovation of surgical drainage technology, can thoroughly remove the secretions and the slough of lacuna or wound surface, promotes wound healing, and this technical operation is simple, and effect is excellent, is easy to promote.This technology has reduced patient's misery, has removed at ordinary times the pain that change dressings more brings to patient from; Reduce wound healing time; At patient care and management aspect, when checking wound surface, reduced open changing dressings and caused the danger of external environmental, reduce the chance of cross infection in hospital; Reduce medical personnel's workload, need not to change dressings every day, as long as check whether negative pressure is effective; Reduced patient's medical expense generally.This technology by doctor WimFleischmann of hospital of attached the traumatology department of German Ulm university 1992 invent, be mainly used in the drain of extremity wound surface, after that the how tame hospitals in area such as Europe, North America are widely applied to is clinical, its range of application is expanded to a plurality of subjects such as orthopedics, the traumatology department, microsurgery, Department of B urn, ulcer center.Qiu Huade introduced domestic in 1994, successively Central-South hospital of Wuhan University, HuaZhong Science University, TongJi medical school, TongJi Hospital, Wuhan Union Hospital, attached Tang of The Fourth Military Medical University all how tame hospitals such as the attached big level ground of hospital, Third Military Medical University hospital, attached Shenzhen hospital of Peking University carry out, all obtained better curative effect, and have a large amount of articles in various authoritative magazines, to deliver, on clinical effectiveness, obtained good checking.Inventor place project team successfully developed the domestic polyvinyl alcohol composite foam material in 2005, and obtained the equipment registration card.This technology come into operation achieve success and develop in, drawbacks such as the no obvious biological activity of foamed materials itself, the easy plugging of inflammatory wound surface also reveal gradually.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of negative pressure drainage of biologically active to protect the wound device.
The inventor further works out the negative-pressure sealed attractive material of biologically active after developing the domestic polyvinyl alcohol foamed materials in 2005--polyvinyl alcohol/chitosan composite foam material.In " Chinese microsurgery magazine " 2010,33:482-484 is open for this composite and preparation method thereof.
The manufacture method of polyvinyl alcohol/chitosan composite foam material is as follows: chitosan is dissolved in the chitosan solution that is made into mass fraction 3% in 3% spirit of vinegar.Take by weighing the 10g polyvinyl alcohol, measure the 80ml distilled water, join in the vessel that are equipped with agitator, temperature-control adjustment device, under the stirring at low speed of 60～80R/min, be warming up to 95 ℃ and treat that polyvinyl alcohol dissolves fully.The chitosan solution that adds 40ml, it is even to continue stirring at low speed.Be cooled to 50 ℃, add 1.5 ml foaming agent, high-speed stirred 70min makes solution free foaming 2.0～2.5 times to initial volume under the speed of 800～1000R/min.Adding 8ml mass fraction is 50% sulphuric acid, continues high-speed stirred 20min.Add 10 ml mass fractions again and be 36% formaldehyde, high-speed stirred 20 min.Be cooled to 4 ℃, add the 5ml0.25% glutaraldehyde solution, high-speed stirred 10min injects mould with foams immediately, puts into baking oven, solidify at 55～60 ℃ of following constant temperature 6 h, take out the contoured foam body, the unreacted formaldehyde of flush away, glutaraldehyde and sulphuric acid no longer produce foam when being washed till neutral and rinsing in water, with foams lyophilization 24h, obtain polyvinyl alcohol/chitosan composite foam material (PVA-CS foam).
Based on above-mentioned scientific achievement, the technical solution of the utility model is:
A kind of negative pressure drainage protects the wound device, comprises medical foam and mozzle, and an end of mozzle inserts in the medical foam, and is inserted on the tube wall of medical foam and is furnished with aperture, and described medical foam adopts polyvinyl alcohol/chitosan composite foam material.
It is preferred further,
The porosity of described medical foam is 70%～85%, and the aperture is 0.2～1.0mm.
Small aperture on the described tube wall is 0.7～2.0mm.
Described drainage tube adopts the hard plastic cement pipe of better intensity.
The thickness of described medical foam is 8.0～14.0mm.
The caliber of described mozzle is 3.0～7.0mm.
Protect the wound device and do not have deficiencies such as obvious biological activity, the easy plugging of inflammatory wound surface for remedying existing negative pressure drainage, this utility model adopts polyvinyl alcohol/chitosan composite foam material.Composite bio-active material chitosan in material, except that possessing original functional property, also have simultaneously chitosan and derivant thereof the inhibition growth of microorganism, promote multiple biological effects such as wound healing, hemostasis, pain relieving.
Description of drawings
Fig. 1 negative pressure drainage protects the structural representation of wound device
1-polyvinyl alcohol/chitosan composite foam wherein, 2-mozzle, 3-aperture
The specific embodiment
The utility model discloses a kind of negative pressure drainage and protect the wound device, comprise medical foam 1 and mozzle 2, one end of mozzle 2 inserts in the medical foam 1, and is inserted on the tube wall of medical foam and is furnished with aperture 3, and described medical foam adopts polyvinyl alcohol/chitosan composite foam material.
During clinical use, negative pressure drainage of the present utility model is protected the wound device to be affixed on the wound surface, make foamed materials 1 become drainage tube 2 and by the intermediary between drain lacuna or the wound surface, reuse has the semi permeability sticking film sealing of biological valve function by the drain district, makes it to be hedged off from the outer world.Mozzle 2 is connected outside negative pressure source, and outside negative pressure source can adopt central negative pressure source or electric suction apparatus, forms an efficient drainage system, removes in time by the exudate in drain district.The thickness of described medical foam is 8.0～14.0mm.The caliber of described mozzle is 3.0～7.0mm.
For the drainage effect that obtains, the porosity of described medical foam is 70%～85%, and the aperture is 0.2～1.0mm.Small aperture on the described tube wall that is inserted in medical foam is 0.7～2.0mm.
For the ease of being connected with outside negative pressure source, described drainage tube should have flexible.For in the negative pressure process, keep pipeline unobstructed, mozzle also will have certain intensity.Described drainage tube can adopt the hard plastic cement pipe of better intensity.
This utility model is mainly used in clinical treatment skin tissue defects, body surface abscess and infection, open fracture may the concurrent infection person, burn or chemical burn or electric burn wound surface, diabetic decubital ulcer, pressure ulcer, osteofascial compartment syndrome etc.
Claims (5)
1. a negative pressure drainage protects the wound device, comprise medical foam (1) and mozzle (2), one end of mozzle (2) inserts in the medical foam (1), and be inserted on the tube wall of medical foam (1) and be furnished with aperture (3), it is characterized in that: described medical foam adopts polyvinyl alcohol/chitosan composite foam material.
2. negative pressure drainage as claimed in claim 1 protects the wound device, it is characterized in that, the porosity of described medical foam is 70%～85%, and the aperture is 0.2～1.0mm.
3. negative pressure drainage as claimed in claim 1 or 2 protects the wound device, it is characterized in that, the aperture on the described tube wall (3) aperture is 0.7～2.0mm.
4. negative pressure drainage as claimed in claim 1 or 2 protects the wound device, it is characterized in that, the thickness of described medical foam is 8.0～14.0mm.
5. negative pressure drainage as claimed in claim 1 or 2 protects the wound device, it is characterized in that, the caliber of described mozzle is 3.0～7.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200296464U CN201996967U (en) | 2011-01-28 | 2011-01-28 | Negative pressure drainage trauma care device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200296464U CN201996967U (en) | 2011-01-28 | 2011-01-28 | Negative pressure drainage trauma care device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201996967U true CN201996967U (en) | 2011-10-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200296464U Expired - Fee Related CN201996967U (en) | 2011-01-28 | 2011-01-28 | Negative pressure drainage trauma care device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201996967U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102488918A (en) * | 2011-12-01 | 2012-06-13 | 中国人民解放军第四军医大学 | Application of chitosan serving as drugs for treating wound surface in negative pressure or closed environment |
-
2011
- 2011-01-28 CN CN2011200296464U patent/CN201996967U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102488918A (en) * | 2011-12-01 | 2012-06-13 | 中国人民解放军第四军医大学 | Application of chitosan serving as drugs for treating wound surface in negative pressure or closed environment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20130128 |
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| CF01 | Termination of patent right due to non-payment of annual fee |