CN201880186U - Surgical wound surface filling dressing for closed negative pressure drainage of wound surface - Google Patents

Abstract

A surgical wound surface filling dressing for closed negative pressure drainage of a wound surface is characterized by comprising a vegetable sponge base, micro-pore fabric, a semipermeable membrane and a negative pressure drainage tube, wherein the outline of the vegetable sponge base is matched with that of a wound surface, the micro-pore fabric is positioned on the upper surface and the lower surface of the vegetable sponge base or wrapped on the surface of the vegetable sponge base, the semipermeable membrane for closing and fixing is arranged on the micro-pore fabric covering the upper surface of the vegetable sponge, and the negative pressure drainage tube is plugged into the vegetable sponge base. The wound surface filling dressing is low in cost, simple in structure and convenient in manufacture, the costs of raw materials and manufacturing are about one percent of those of the like products, thereby medical treatment cost is greatly reduced and popularization of technic of closed negative pressure drainage is benefited.

Description

The closed negative pressure drainage of surgical wound is filled dressing with wound surface

Technical field

This utility model relates to a kind of medical supplies, especially the wound surface that uses in the closed negative pressure drainage device of a kind of surgery is filled dressing, and the cheap very high porous sponge of vegetable sponge displacement cost of specifically a kind of usefulness filters as wound surface and attracts the closed negative pressure drainage of surgical wound of head to fill dressing with wound surface.

Background technology

Closed negative pressure drainage technology (Vacuum-assisted Closure, VAC) be the cutting edge technology of 21 century Wound treating, make Wound treating that revolutionary variation take place, be widely used in the covering and the drain of wound surface under the property conditions such as tissue defect due to acute or chronic various wound of body surface and ulcer surface, large tracts of land soft tissue defects, the war wound or internal organs expose.

Traditional Therapeutic Method is heavy for those damages, pollute heavy, involving the complexity that multiple tissue and many causative factors of injury cause hinders comparatively thorny, infection, gangrene and amputation rate height, complication is many, and the chronic wound that a variety of causes forms is difficult to healing, health resources and manpower consumption are big, promptly allow to healing, healing quality is not good yet, with modern's rhythm of life and need the utmost point to be discord.The reason that wound surface is difficult to heal is: 1. intractable inflammation, infection and edema; 2. local blood fortune is poor, is difficult to form healthy wound base; 3. cicatrization or malignant change; 4. repairing cell proliferation, divide a word with a hyphen at the end of a line and be obstructed, can not be formed with the wound surface microenvironment that is beneficial to healing.By contrast, the VAC technology has shown outstanding superiority, and studies have shown that: 1. this technology can quicken the removing of slough and exudate, eliminates the bacterial reproduction condition, alleviates bacterial load; 2. diminish inflammation and infect, alleviate edema wound; 3. improve local blood confession, reduce the repair cell apoptosis, promote repairing cell proliferation and migration, promote granulation to form; 4. two-ways regulation matrix metalloproteinase MMPs and hyaluronic acid HA level are formed with the wound surface microenvironment that is beneficial to healing, are ready to wound bed for further operative treatment rapidly; 5. reduce dressing change frequency (5-7 days are once), save human and material resources, reduce the discomfort that the conventional wrapping of changing dressings brings to the wounded, and the wound district is salubrious, clean, there is not any abnormal flavour, improved wounded's quality of life and wound healing quality, also reduced financial burden.In addition, general surgery, orthopaedics, Cardiac Surgery, the thoracic surgery potentiality that all are widely used can also promote significantly that various tissue flap survive, and alleviate the deep second degree burn damage, reduce skin soft tissue explosive injury wound surface amount of bacteria and save the parabiosis tissue, reduce the Secondary cases necrosis.

VAC can be extremely external with the sucking-off of wound tissue liquid by continuous negative pressure suction, makes swollen tissue disappear.Little blood vessel afterload reduced after the swelling of suction function undertissue was disappeared, and for surgical wound, fresh blood is poured into wound, causes tissue blood obviously to increase, and can improve the local blood circulation situation.Studies show that at present the closed negative pressure suction device can promote keratinocyte growth and protein synthesis by mechanism, the decomposition of these transmembrane proteins can transmit the extracellular signal in cell, promotes cell to breed.In the external test tube test of hyperblastosis, scholars find that the mechanical swelling of organizing can be so that cell proliferation.Also find in the animal experiment to use vacuum suction can make the wound granulation tissue form rapidly, and common dressing does not have this effect, illustrate that cellular replication not only needs the stimulation of chemical factor, also rely on certain cytoskeletal tension force effect, this is the vital tissue environment of wound healing.Tissue displacement takes place in its edge and bottom behind the negative pressure device processing wound surface under suction function, and the foam pore that the surface of wound surface is drawn onto dressing causes that small local microenvironment changes.Under the local condition of continuous negative pressure suction, the growth series of antibacterial has been subjected to obvious suppression, thereby promotes the healing of wound.In wound surface local in the environment; because suction function has reduced pressure between tissue, the oxygen tension of wound circumference descends; stimulate and repair enabling signal; remove slough, body secretion fibrinolytic protein activator and other enzymes discharge, and carry out from the dissolubility debridement; VAS treatment back proto-oncogene C-fos, matrix metalloprotease etc. are expressed and are all obviously descended; the collagen composition that makes wound surface express is protected, and organizes its forfeiture, effectively improves healing.

The notion of VAC is the earliest by introductions such as the German ULM Fleischmann of university, reported 25 routine osteofascial compartment syndrome patients' operating position in 1996, respond well, only 1 example necroses, the wound surface swab is only cultivated 5 examples and is detected antibacterial and do not have 1 example and occur infecting in the 52 routine arts, think that in view of the above this technology can effectively clear up and control wound surface, promote granulation tissue hyperplasia, accelerate healing.1997, Morykways etc. discovered that this device can promote the wound surface local blood circulation, promoted post bud tissue to generate, and reduced tissue bacterial content, improved flap or free skin-grafting survival rate.Confirmation such as Moues afterwards, the negative-pressure sealed drainage technology is compared with traditional moistening dressing wrapping, significantly shortens wound healing time.Fbaian compares more with hyperbaric oxygentherapy by experimental study discovery negative pressure drainage can promote granulation tissue hyperplasia; Couttefangeas finds that the cell that soaks on the adjuvant of wound filling is mainly the granulocyte composition, and CD4 (+) function T cell can promote the cleaning in the wound surface, and good microenvironment is provided.Labanaris etc. discovered that VSD can promote the hypertrophy of wound surface surrounding tissue lymph pipe network in 2009.Many more scholars that gets up have confirmed VSD Clinical application effect by a large amount of research and clinical practice, and its theoretical research is updated, and states such as Germany in 2003, Austria include this technology in wound treatment guide.

The VAC technology is the product that traditional negative pressure drainage method is combined with closure dressing, and it produces machinery and biological effect by forming negative pressure at wound surface, promotes wound healing.Therefore must use special-purpose wound surface to fill dressing, existing wound surface is filled dressing side will be by mandruka, drainage tube and pad pasting are formed, porous sponge wherein is a key technology, it requires sponge inside to keep clear, to guarantee that the tissue that vacuum suction goes out can be by normal sucking-off, common used material is a polyvinyl alcohol, and require the foam micro-pore diameter at 0.2-1.0mm, and polyvinyl alcohol cost height, the manufacturing process complexity mainly depends on import at present, and simultaneously the required quantity of each patient treatment is more, cause this type of Therapeutic Method cost very high, increased heavy financial burden to the patient.Therefore, a kind of substitute products cheaply of exploitation are task of top priority.

Summary of the invention

The purpose of this utility model be at use in the existing closed negative pressure drainage technology with the very high problem of the contacted filling dressing of wound surface cost, design a kind of closed negative pressure drainage of surgical wound and fill dressing with wound surface based on the very low pure natural material preparation of the cost of vegetable sponge.

The technical solution of the utility model is: the closed negative pressure drainage of a kind of surgical wound is filled dressing with wound surface, it is characterized in that it mainly by the vegetable sponge matrix that matches with the wound surface profile, be arranged in vegetable sponge matrix upper and lower surface or be wrapped in the vegetable sponge matrix surface the micropore lining, cover the negative-pressure drainage tube that plays the semipermeable membrane of closed and fixed effect on the micropore lining of vegetable sponge body upper surface and insert the vegetable sponge matrix and form.

Described micropore lining is a kind of or its combination in silkworm silk gauze, staple gauze or the rubber with holes.

Also be fitted with liquid supplementation pipe in the described vegetable sponge matrix.

The beneficial effects of the utility model: 1. this utility model adopts useless originally or only washes the dishes, has a bath the vegetable material----vegetable sponge (or claiming chalina) of usefulness as medical material as family, make full use of the unobstructed characteristics of its internal structure, be a kind of All Pure Nature biomaterial, Nonpoisonous, non-environmental-pollution.

2. the vegetable sponge large aperture than the polyvinyl alcohol foam material, can provide more lasting powerful negative pressure, can not stop up drainage tube, can continue to keep wound clean.

3. utilize very similar characteristic of fibroin and human body skin cutin protein structure, as vegetable sponge surface lapping, the fineness that increases the vegetable sponge surface reaches vegetable sponge surface microporeization (silkworm silk gauze micro-pore diameter is at 0.2-1.0mm), make wound surface granulation growth uniformity, and fibroin can promote the inflammation wound to dwindle, promote the collagen protein secretion.

4. help promoting agricultural development, the development low-carbon economy, the protection agricultural is ploughed the conservation of nature environment.

5. this utility model is with low cost, and is simple in structure, easily manufactured, and raw material and manufacturing cost only are about one of percentage of like product, can reduce medical treatment cost greatly, therefore helps the popularization of closed negative pressure attraction technology.

Description of drawings

Fig. 1 is the structural representation that closed wound surface of the present utility model is filled dressing.

The specific embodiment

Below in conjunction with drawings and Examples this utility model is further described.

As shown in Figure 1.

The closed negative pressure drainage of a kind of surgical wound is filled dressing with wound surface, it is mainly by vegetable sponge matrix 1, micropore lining bottom 2, micropore lining surface layer 3, semipermeable membrane 4 and suction catheter 5 are formed, the controllable thickness of vegetable sponge matrix 1 is in 4 centimetres, it is between micropore lining bottom 2 and surface layer 3, can be connected to a bag shaped structure around micropore lining bottom 2 and the surface layer 3, can not link to each other mutually yet, semipermeable membrane 4 is that a kind of energy sees through gas but material that can not permeate water, its main effect is the environment that forms a sealing on the wound surface, so that can in the environment of sealing, form negative pressure by negative pressure generator, and then be convenient to wound fluid and see through micropore lining bottom 2 and enter in the vegetable sponge matrix 1, suction catheter from stretch into vegetable sponge matrix 15 sucks in the drainage bottle again, in case of necessity, also can insert feeder current pipe 6 in the vegetable sponge matrix 1, so that be wound surface supplement therapy liquid or nutritional solution by positive pressure system.The semipermeable membrane 4 of sealing usefulness is used for the impermeable plastic wound dressing wound surface, and requirement is not by fluid molecule, certain the moon to be arranged every property to antibacterial by gaseous molecular, can adopt polyurethane semipermeable membrane commonly used at present.Drainage tube 5 can use single and many drains according to the wound surface situation, buries and fills in vegetable sponge matrix 1 inside, adopts loose structure and needs certain rigidity, can adopt silica gel tube or high molecule plastic pipe.For negative pressure suction device, both can use central negative pressure suction device, surgery vacuum tube and the existing commercially available vacuum aided therapeutic instrument of hospital, also can adopt Chinese patent 012469912 disclosed a kind of portable negative pressure generator.

During concrete enforcement, described micropore lining is that a kind of in silkworm silk gauze, staple gauze or the rubber with holes or other can produce the material coating of micropore, be the best wherein with the silkworm silk gauze, fibroin in the silkworm silk gauze and human body skin cutin protein structure be similar characteristic very, as vegetable sponge surface coverage or lapping, the fineness that can increase the vegetable sponge surface reaches vegetable sponge surface microporeization (silkworm silk gauze micro-pore diameter is at 0.2-1.0mm), make wound surface granulation growth uniformity, and fibroin can promote the inflammation wound to dwindle, promote the collagen protein secretion.

The manufacturing step that the closed negative pressure drainage of this utility model surgical wound is filled dressing with wound surface is as follows: at first, sophisticated vegetable sponge is gone seed, cleaning, drying for standby; Secondly, vegetable sponge is processed into the shape that matches with the wound surface profile by compression, cutting etc., controls its thickness and be no more than 4 centimetres; Shape can be cut into different shape according to clinical needs, as strip, square, circular, oval, triangle etc.; The 3rd, an end of drainage tube is inserted in the vegetable sponge (also can when clinical use plug-in mounting), also answer liquid supplementation pipe of plug-in mounting in case of necessity.

The 4th, carry out the coating micropore processing with micropore lining (as silkworm silk gauze, staple gauze or rubber with holes) parcel vegetable sponge or on the surface of vegetable sponge; The 5th, the vegetable sponge that is shaped is sterilized, can adopt ethylene oxide sterilizing; At last, place aseptic package bag promptly to get the vegetable sponge of above-mentioned preparation gained and fill dressing based on the wound surface of vegetable sponge, unpack in the scene, sticked the semipermeable membrane of sealing and fixation at the upper surface of the vegetable sponge that includes poromerics, one end of suction catheter is linked to each other with negative pressure source and can start working, the negative pressure of negative pressure source preferably adopts controlled, adjustable negative pressure generator, the running voltage of negative pressure generator is the 220V power supply, negative pressure working range-50～-400mmHg, pressure intervals-10mmHg.Working time default settings 20 hours (5 hours at interval), default settings 2 minutes break time (1 minute at interval).The human computer conversation is provided with data, and liquid crystal display has to continue and two kinds of working methods intermittently, and is provided with warning systems such as inclination, drainage bottle are full, gas leakage.Preferably also have stand-by power supply, so that having a power failure and wounded's therapy discontinued not must leave the time.

Fill 100 groups of contrast tests of dressing and import wound surface filling dressing finds by the wound surface that vegetable sponge of the present utility model is made, wound surface of the present utility model fills dressing because drain is unobstructed, therefore the patient on average shortens one and half in the cycle of fully recovering, and the employed expense of dressing only for import dressing 10% less than, the financial burden that greatly reduced the patient has excellent popularization and is worth.

This utility model does not relate to the part prior art that maybe can adopt all same as the prior art to be realized.

Claims (3)

1. the closed negative pressure drainage of surgical wound is filled dressing with wound surface, it is characterized in that it mainly by the vegetable sponge matrix that matches with the wound surface profile, be arranged in vegetable sponge matrix upper and lower surface or be wrapped in the vegetable sponge matrix surface the micropore lining, cover the negative-pressure drainage tube that plays the semipermeable membrane of closed and fixed effect on the micropore lining of vegetable sponge body upper surface and insert the vegetable sponge matrix and form.

2. the closed negative pressure drainage of surgical wound according to claim 1 is filled dressing with wound surface, it is characterized in that described micropore lining is a kind of or its combination in silkworm silk gauze, staple gauze or the rubber with holes.

3. the closed negative pressure drainage of surgical wound according to claim 1 is filled dressing with wound surface, it is characterized in that also being fitted with liquid supplementation pipe in the described vegetable sponge matrix.