Negative pressure wound treating system and dressing component thereofTechnical field
The present invention relates to medical instruments field, particularly relate to a kind of negative pressure wound treating system and dressing component thereof.
Background technology
At present, in trauma care process, prevention infection, promote wound site blood circulation thus healing acceleration is the main target that medical personnel will reach always.But the wound of the wound that the excessive wound of some wound surface, chronic disease cause or severe infections, is difficult to be able to rapid healing by the treatment of traditional debridement treatment.Such wound, local blood circulation is blocked, and does not have enough blood to flow to wound site, causes organizing deficiency of oxigen and nutrient substance around wound surface, does not have the traumatic infection that enough immunocompetence opposing microorganisms cause.Easily cause septicemia, compromised immune wound or the prolonged difficulty of wound more.These phenomenons have become clinical in wound surface nursing, do one's utmost to avoid.
The negative pressure attraction treatment system of wound uses recent two decades, the tissue exudates produced for attracting wound surface.Thus eliminate the retardance of wound surface local, ensure local blood circulation, guarantee the blood oxygen amount of wound site and the conveying of nutrient substance.Thus accelerating wound healing, improve anti-infective immunity.
Clinical research shows, when negative pressure is in 75mmHg to 335mmHg scope, most of wound surface can obtain suitable treatment.Transudate can be made comprehensively to be removed, wound tissue and surrounding tissue can be kept again to preserve from.
But existing negative pressure wound treating system, general use a pipeline to lead to wound, both negative pressure at suction wound place, simultaneously the transudate at suction wound place again.The weak point of such design is: one be evacuation and the pipeline measuring wound negative pressure value is same, when there is the transudate aspirated in pipeline, or pipeline is blocked by full-bodied transudate, there is comparatively big error in the negative pressure value then in pipeline and the negative pressure value of wound, is difficult to the true negative pressure value being accurately measured wound; Two is that the wound fluid be absorbed in pipeline easily returns wound surface when negative pressure wound treating system is in pressure cycle alternation procedure, produces and repeats wound surface pollution.
Also some technology are had to have employed two pipelines, one of them pipeline is gas suction, another pipeline is wound fluid suction, but because the port of two pipelines in wound lacks effective isolation, two pipelines can interact in negative pressure-pumping process, are difficult to guarantee that gas piping and liquid line can work alone completely.
Summary of the invention
Technical problem to be solved by this invention is: pressure detecting pipe wound end port and liquid suction pipe wound end port lack effectively isolates, and the obstruction that wound fluid can be inhaled into build-up of pressure detector tube from pressure detecting pipe causes wound force value to measure distortion.
The invention provides a kind of negative pressure wound therapy dressing component, comprising:
Transfer layer of liquid, covers wound surface for transmitting wound fluid;
Lid, to cover in described transfer layer of liquid and under negative pressure state, to there is at least one cavity with described transfer layer of liquid;
Liquid suction pipe, port is arranged in described transfer layer of liquid for suction wound transudate;
Pressure detecting pipe, port is arranged at least one cavity described for detecting wound force value;
It is characterized in that described transfer layer of liquid exists at least one sunk area, described sunk area is provided with a sealing coat mated with this concave shape, and described sealing coat and described lid form at least one cavity described under negative pressure state.
Further, described transfer layer of liquid has the surface of an arc.
Further, described sealing coat comprises at least one support arm.
Further, described sealing coat is airtight structure.
Further, described sealing coat is hard material.
Further, the material of described hard is polrvinyl chloride.
Further, between described sealing coat and described lid, be provided with the barrier layer for stopping wound fluid.
Further, described barrier layer is network structure.
Further, described transfer layer of liquid is netted open-cell polyurethane or polyether foam.
Correspondingly, the present invention also provides a kind of negative pressure wound treating system, it is characterized in that, comprises negative pressure treatment equipment and the described negative pressure wound therapy dressing component with this negative pressure treatment equipment connection.
The embodiment of the present invention arranges pressure charge monitoring and the liquid suction respectively of two independent pipelines by negative pressure wound therapy dressing component, pressure monitoring line ports is positioned on transfer layer of liquid, rigid cover and near the inner surface of rigid cover, liquid suction pipe road port is arranged in the porous body of transfer layer of liquid.Use disconnected two pipelines each other can avoid not yet done interference each other and impact between pressure monitoring and liquid suction, the data of pressure monitoring can be made simultaneously more accurate.Avoid in the pipeline because of suction wound transudate and there is transudate fluid column or blocked by full-bodied transudate, cause wound pressure values to measure distortion.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, the accompanying drawing obtaining other according to these accompanying drawings still belongs to category of the present invention.
Fig. 1 is the schematic diagram one of a kind of negative pressure wound therapy dressing component provided by the invention;
Fig. 2 is the structural representation two of a kind of negative pressure wound therapy dressing component provided by the invention under negative pressure state;
Fig. 3 is the structural representation three of a kind of negative pressure wound therapy dressing component provided by the invention under negative pressure state;
Fig. 4 is the structural representation four of a kind of negative pressure wound therapy dressing component provided by the invention under negative pressure state;
Fig. 5 is the structural representation five of a kind of negative pressure wound therapy dressing component provided by the invention under negative pressure state;
Fig. 6 is the structural representation of a kind of negative pressure wound treating system provided by the invention.
Detailed description of the invention
The explanation of following embodiment is with reference to accompanying drawing, and in order to formula example, the present invention can in order to the specific embodiment implemented.The direction term that the present invention mentions, such as " on ", D score, "front", "rear", "left", "right", " interior ", " outward ", " side " etc., be only the direction with reference to annexed drawings.Therefore, the direction term of use is in order to illustrate and to understand the present invention, and is not used to limit the present invention.
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1, Fig. 1 is the schematic diagram one of a kind of negative pressure wound therapy dressing component provided by the invention, and a kind of negative pressure wound therapy dressing component 100, comprising: transfer layer of liquid 110, covers wound surface for transmitting wound fluid; Lid 120, to cover in described transfer layer of liquid 110 and under negative pressure state, to there is at least one cavity with described transfer layer of liquid 110; Liquid suction pipe 130, its port is arranged at for suction wound transudate in described transfer layer of liquid 110; And pressure detecting pipe 140, its port is arranged at least one cavity described for detecting wound force value.Wherein, described transfer layer of liquid 110 exists at least one sunk area 111, described sunk area 111 is provided with a sealing coat 112 mated with this concave shape, and described sealing coat 112 and described lid 120 form at least one cavity described under negative pressure state.Described pressure detecting pipe 140 wound end port is arranged in this at least one cavity.
Particularly, transfer layer of liquid 110 covers patient wound surface for the transmission of wound fluid, and transfer layer of liquid 110 directly and patient wound's surface contact; The wound end port of liquid suction pipe 130 is arranged in described transfer layer of liquid 110, and presses close to the position on wound bed surface, for suction wound transudate.
The top that lid 120 covers transfer layer of liquid 110 for isolating exterior air.Under negative pressure state, lid 120 and described sealing coat 112 can maintain at least one cavity, and this at least one cavity is used for the port of placement force detector tube 140 wound end.Be understandable that, pressure detecting pipe 140 wound end port is arranged at least one cavity described, this at least one cavity is the insulating space that wound fluid isolated by pressure detecting pipe 140, wound fluid can be avoided to be inhaled into from this pressure detecting pipe the obstruction causing signal piping, thus to avoid the measurement distortion causing wound force value.
Also refer to Fig. 1, in the embodiment of the present invention, the sunk area 111 in transfer layer of liquid 110 is a groove structure, and correspondingly, sealing coat 112 is the structure of mating with this groove shapes.The shape of this sunk area can be varied, herein varied under negative pressure state described lid can maintain at least one cavity above this sunk area.Further, sealing coat 112 is attached on sunk area 111, and sunk area 111 can be in the marginal portion of transfer layer of liquid 110, as shown in Figure 2.Be understandable that, a cavity is certainly existed between sealing coat 112 on sunk area 111 and lid 120, and this cavity isolates the insulating space of wound fluid under negative pressure state as pressure detecting pipe 140, pressure detecting pipe wound end port is arranged in this cavity, thus isolate with liquid suction pipe and wound fluid, avoid wound fluid and cause pressure detecting blockage from the suction of pressure detecting pipe, make wound pressure values measure distortion.
Sealing coat 112 can also be provided with at least one support arm 1121, see Fig. 3, the fossaperturate of this support arm 1121 from the edge of described sealing coat 112 to described depression 111 extends, the structure of the support arm 1121 shown in Fig. 2 is a good embodiment in the present invention, it should be understood that, support arm 1121 can extend from the edge of sealing coat 112 to either direction, makes this support arm 1121 remain on negative pressure state lower cover 120 and is unlikely to subside and is advisable.The port section of at least one cavity for placement force detector tube 140 is maintained between lid 120 and described sealing coat 112.Implement the embodiment of the present invention, effectively can isolate wound fluid and pressure detecting pipe, thus ensure the accuracy and precision of the wound force value that negative pressure state downforce detector tube detects.
See 4 to Fig. 5, Fig. 4 is the structural representation four of negative pressure wound therapy dressing in the embodiment of the present invention.Transfer layer of liquid 110 has the surface of an arc.Be understandable that, the surface of this arc is the upper surface relative with lid 120.Under negative pressure treatment state, curved upper surface can make to maintain at least one cavity between the lid 120 under negative pressure state and described sealing coat 112.In the embodiment of the present invention, described sealing coat 112 is hard material, it will be appreciated by persons skilled in the art that hard material described herein is the material that sealing coat 112 and lid 120 can maintain at least one cavity in negative pressure treatment process.In embodiments of the present invention, sealing coat 112 adopts polrvinyl chloride (PVC) material, is understandable that, sealing coat 112 can also adopt the materials such as common ABS plastic, polystyrene or polyformaldehyde.
Refer to Fig. 5, Fig. 5 is the structural representation five of negative pressure wound therapy dressing in the embodiment of the present invention.The barrier layer 150 for stopping wound fluid is provided with between lid 120 and described sealing coat 112.In the embodiment of the present invention, barrier layer 150 is network structure, it will be appreciated by persons skilled in the art that described barrier layer 150 can be one-body molded with described sealing coat 112; Can also be fixed on described isolation cabin 112 by dismountable mode.Implement the embodiment of the present invention, barrier layer 150 be arranged on transfer layer of liquid 110 on can stop that dense thick wound fluid enters pressure detecting pipe 140, the wound force value that pressure detecting pipe 140 is detected is more accurate.
Further, in order to avoid pressure detecting pipe 140 is blocked by dense thick wound fluid, the pressure detecting pipe 140 in the embodiment of the present invention is provided with perforate on the tube wall of wound end.
In addition, transfer layer of liquid 110 is netted open-cell polyurethane or polyether foam.
Correspondingly, the present invention also provides a kind of negative pressure wound treating system, as shown in Figure 6.The above-mentioned negative pressure wound therapy dressing 100 that negative pressure wound treating system 10 comprises negative pressure wound therapy device 200 and is connected with this negative pressure wound therapy device 200.
Implement the embodiment of the present invention, there is following beneficial effect:
First, in embodiments of the present invention, have a cavity between the sealing coat of transfer layer of liquid and lid, this cavity, as the insulating space of pressure detecting pipeline and wound fluid, avoids wound fluid by the obstruction of pressure detecting pipeline sucking-off build-up of pressure detector tube;
Secondly, in the embodiment of the present invention, adopting the irregular sealing coat of not shrinkage depression under negative pressure state further, like this without the need to changing manufacture difficulty and the cost of lid, pressure detecting pipeline and wound fluid can be made well mutually isolated;
And, in certain embodiments, this irregular sealing coat has at least one groove, also can be have at least one gap structure at sealing coat edge, larger insulating space can be formed under negative pressure state, thus reach the effect of better isolation wound fluid;
In addition, can also be provided with projection at the inner surface of lid, the insulating space that lid and sealing coat can be made like this to be formed when negative pressure starts is larger, thus better avoids wound fluid by the distortion of pressure detecting pipeline sucking-off build-up of pressure detected value.
Above disclosedly be only a kind of preferred embodiment of the present invention, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.