CN117860479A - Negative pressure wound therapy dressing assembly and manufacturing method thereof - Google Patents
Negative pressure wound therapy dressing assembly and manufacturing method thereof Download PDFInfo
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- CN117860479A CN117860479A CN202410140235.4A CN202410140235A CN117860479A CN 117860479 A CN117860479 A CN 117860479A CN 202410140235 A CN202410140235 A CN 202410140235A CN 117860479 A CN117860479 A CN 117860479A
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- drainage pipeline
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 238000009581 negative-pressure wound therapy Methods 0.000 title claims description 12
- 208000027418 Wounds and injury Diseases 0.000 claims abstract description 89
- 206010052428 Wound Diseases 0.000 claims abstract description 82
- 239000006260 foam Substances 0.000 claims abstract description 17
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052709 silver Inorganic materials 0.000 claims abstract description 16
- 239000004332 silver Substances 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 230000006837 decompression Effects 0.000 claims abstract description 10
- 229920000297 Rayon Polymers 0.000 claims abstract description 8
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 5
- 239000004945 silicone rubber Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 7
- 230000029663 wound healing Effects 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 2
- 230000035876 healing Effects 0.000 abstract description 12
- 230000006378 damage Effects 0.000 abstract description 7
- 208000014674 injury Diseases 0.000 abstract description 7
- 230000001684 chronic effect Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 241000894006 Bacteria Species 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 208000034309 Bacterial disease carrier Diseases 0.000 abstract description 2
- 244000052616 bacterial pathogen Species 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 abstract description 2
- 238000004321 preservation Methods 0.000 abstract description 2
- 239000000416 hydrocolloid Substances 0.000 abstract 1
- SEEPANYCNGTZFQ-UHFFFAOYSA-N sulfadiazine Chemical compound C1=CC(N)=CC=C1S(=O)(=O)NC1=NC=CC=N1 SEEPANYCNGTZFQ-UHFFFAOYSA-N 0.000 abstract 1
- 229960004306 sulfadiazine Drugs 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 10
- 206010063560 Excessive granulation tissue Diseases 0.000 description 7
- 210000001126 granulation tissue Anatomy 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 206010030113 Oedema Diseases 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 208000011580 syndromic disease Diseases 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 230000000472 traumatic effect Effects 0.000 description 1
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Abstract
The invention discloses a negative pressure wound treatment dressing assembly and a manufacturing method thereof, wherein the negative pressure wound treatment dressing assembly comprises a dressing body, a drainage pipeline and a negative pressure source, the dressing body comprises a fixed part and a suction part, the fixed part comprises a sealing layer and a decompression layer, the suction part comprises a suction pipe body, the surface of the suction pipe body is provided with a plurality of suction holes, the suction pipe body is wrapped by a silver-containing oil yarn dressing, the suction pipe body is connected with the drainage pipeline, and the drainage pipeline is connected with the negative pressure source; the sulfadiazine hydrocolloid silver dressing is selected as the improved filling dressing, so that the volume of the chronic wound is effectively reduced, bacterial colonization is reduced, and the positive rate of pathogenic bacteria is reduced; the sealing dressing is improved to select the non-viscose foam dressing and the transparent dressing, so that the moist healing environment is maintained, the heat insulation and the heat preservation are realized, the external impact force is buffered, the pressure is distributed again uniformly, the skin is not adhered, the pressure injury and the viscose related injury caused by continuous negative pressure suction of the skin around the wound can be prevented, meanwhile, the selected transparent dressing can resist water and bacteria, has good compliance and promotes comfort; the disposable drainage tube is a self-made multi-side hole drainage tube, and the material is a silicone rubber material.
Description
Technical Field
The invention belongs to the technical field of dressing, and particularly relates to a negative pressure wound treatment dressing assembly and a manufacturing method thereof.
Background
Negative Pressure Wound Therapy (NPWT) was a new approach to wound therapy proposed and developed in the last 20 years, proposed by the doctor Fleischmann doctor at the university of Ulm in germany in 1993, and has achieved good results in the treatment of 25 cases of traumatic osteofascial syndrome patients, approved for use by the FDA in the united states in 1995.
The negative pressure wound surface treatment mainly comprises a filling dressing, a sealing film, a drainage pipeline and a negative pressure source. The principle of the device is that a negative pressure suction device is utilized, a closed environment is formed around a wound by means of a dressing, a connecting pipe and a transparent film, and negative pressure is intermittently or continuously generated at the wound, so that the purposes of alleviating tissue edema, promoting granulation growth and shortening wound healing time are achieved.
The dressing adopted in the current negative pressure wound treatment is mostly stuck to the wound surface, most of the wound has cavities, the effusion in the cavities is far away from the dressing on the surface layer, the negative pressure suction effect is not ideal, and the filled dressing is more conventional, so that the treatment effect is to be improved.
Disclosure of Invention
The invention aims to design a negative pressure wound treatment dressing component and a manufacturing method thereof, and designs a negative pressure wound treatment dressing with a silver-containing gauze dressing aiming at the wound surface area and cavity, so as to achieve the purposes of promoting wound healing and effectively reducing the treatment cost of patients.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the negative pressure wound treatment dressing assembly comprises a dressing body, a drainage pipeline and a negative pressure source, wherein the dressing body consists of a fixing part and a suction part, the fixing part consists of a sealing layer and a decompression layer, the suction part comprises a suction pipe body, a plurality of suction holes are formed in the surface of the suction pipe body, the suction pipe body is wrapped by a silver-containing oil yarn dressing, the suction pipe body is connected with the drainage pipeline, and the drainage pipeline is connected with the negative pressure source.
Furthermore, the sealing layer adopts medical transparent dressing, and the decompression layer adopts non-viscose foam dressing.
Furthermore, the edge of the transparent dressing exceeds the range of the covered foam dressing by at least 5cm, so that the tightness of the wound surface is ensured.
Further, the shape of the suction tube body is a straight shape or a Y shape or a ring shape or a frame shape according to different shapes of the cavity.
Further, the silver-containing oil yarn dressing spirally wraps the suction tube body.
Further, the drainage pipeline and the suction pipe body are made of silicone rubber.
A method of making a negative pressure wound therapy dressing assembly, the method comprising the steps of:
s1: according to the wound surface area and cavity size, suction tube bodies with different shapes are designed;
s2: cutting silver-containing oil yarn dressing into long strips, and spirally wrapping the silver-containing oil yarn dressing on the surface of a self-made disposable multi-side hole suction tube body;
s3: the suction tube body is kept smooth and externally connected with one end of a drainage pipeline;
s4: the surrounding skin of the wound is stuck with a small foam dressing for decompression protection, and the wound surface is sealed by a transparent dressing without adhesive foam dressing;
s5: the transparent film dressing at the leading-out position of the drainage pipeline is closed by a 'tying film' method, the exposed part of the drainage pipe is not adhered under tension, the edge of the sticking film exceeds the range of the covered foam dressing by at least 5cm, and the tightness of the wound surface is ensured;
s6: finally, the other end of the drainage pipeline is connected with a central negative pressure source, the body position and the pressure value are adjusted, the pressure value is different according to the selection of different wound types, wound sizes, positions and the like, the negative pressure suction is continuously carried out, the drainage pipeline is replaced once in 72 hours, and the wound healing is rapidly promoted
Compared with the prior art, the technical scheme has the following beneficial effects:
the filling dressing is improved, silver-containing oil yarn is selected for dressing, the volume of a chronic wound is effectively reduced, bacterial colonization is reduced, and the positive rate of pathogenic bacteria is reduced; the sealing dressing is improved to select the non-viscose foam dressing and the transparent dressing, so that the moist healing environment is maintained, the heat insulation and the heat preservation are realized, the external impact force is buffered, the pressure is distributed again uniformly, the skin is not adhered, the pressure injury and the viscose related injury caused by continuous negative pressure suction of the skin around the wound can be prevented, meanwhile, the selected transparent dressing can resist water and bacteria, has good compliance and promotes comfort; the disposable drainage tube is a self-made multi-side hole drainage tube, and the material is a silicone rubber material.
According to the different shapes of the cavities of the wounds, the corresponding shape of the suction tube body can be correspondingly designed, and the tube body can be placed in the cavities to effectively suck liquid.
Drawings
Fig. 1 is an overall view of a negative pressure wound therapy dressing.
Fig. 2 is a cross-sectional view of the dressing body of example 1.
Fig. 3 is a cross-sectional view of the dressing body of example 2.
In the figure:
in the figure: 1. a drainage pipeline; 2. a sealing layer; 3. a decompression layer; 4. suction tube body; 5. silver-containing oil yarn dressing.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
example 1:
as shown in fig. 1, the negative pressure wound treatment dressing assembly comprises a dressing body, a drainage pipeline 1 and a negative pressure source, and from the view shown in fig. 2, the dressing body of the invention consists of a fixing part and a suction part, wherein the fixing part consists of a sealing layer 2 and a decompression layer, the sealing layer is a medical transparent dressing, the decompression layer is a non-viscose foam dressing, the fixing part can keep a wet healing environment, insulate heat and keep temperature, buffer external impulsive force, enable pressure to be distributed uniformly again, and the skin is not adhered, so that pressure injury and viscose related injury caused by continuous negative pressure suction of the skin around a wound can be prevented, meanwhile, the selected transparent dressing can resist water and bacteria, has good compliance and promotes comfort; the suction part comprises a suction tube body, a plurality of suction holes are formed in the surface of the suction tube body, the suction tube body is wrapped by a silver-containing yarn dressing 5, the suction tube body in fig. 2 adopts a straight tube structure in a straight shape, the suction tube body 4 is directly sheathed with a drainage pipeline, and the drainage pipeline is connected with a negative pressure source.
In the above embodiment 1, the transparent film dressing at the outlet of the drainage tube is closed by a "tied film" method, the exposed part of the drainage tube is adhered without tension, the edge of the transparent dressing exceeds the covered foam dressing by at least 5cm, and the tightness of the wound surface is ensured. The drainage pipeline and the suction pipe body are made of silicone rubber.
Example 2:
based on the embodiment 1, the embodiment still adopts a straight pipe in a shape of a straight line according to the shape of the wound cavity, but the straight pipe is connected with a drainage pipeline to form a T shape (shown in fig. 3), so that the requirement of actual negative pressure suction can be met, and the connection mode can fully contact pus.
On the basis of the embodiment, the invention can also form the suction tube body into a Y shape or a ring shape or a frame shape.
The manufacturing process is specifically used, after a wound surface is processed according to wound treatment specifications, sterile gloves are worn, suction pipes with different shapes are designed according to the area of the wound surface and the size of a cavity, silver-containing gauze dressing is cut into long strips, the silver-containing gauze dressing is spirally wrapped outside the self-made disposable suction pipe with multiple side holes, the suction pipe is stuffed in the wound (in the cavity), a plurality of drainage pipes (or suction pipes with multi-section shapes) are connected with one another through Y-shaped connectors or three-way pipes if the wound has multiple cavities, small foam dressing blocks are stuck on the surrounding skin for decompression protection, the wound surface is sealed by non-adhesive foam dressing, the transparent dressing is sealed, the suction pipe is connected with the drainage pipes, the transparent film dressing at the leading-out position is sealed by a 'tying film' method, the exposed part of the drainage pipe is stuck in a non-tension mode, and the edge of the sticking film exceeds the range of the covered foam dressing by at least 5cm, so that the tightness of the wound surface is ensured; finally, the tail end of the drainage tube is connected with a central negative pressure source, the body position and the pressure value are adjusted, the pressure value is different according to the selection of different wound types, wound sizes, positions and the like, the negative pressure suction is continuously carried out for 72 hours, the wound healing is rapidly promoted, and the treatment cost of a patient is effectively reduced.
The invention obviously accelerates the closing of the infection cavity gap and the healing of the wound surface, obviously reduces the treatment cost of patients, and shortens the time and labor cost of treatment and nursing; promoting recovery of diseases of patients and improving life quality of patients.
Wound making gate treatment using Negative Pressure Wound Therapy (NPWT) for 40 cases of complex wounds had satisfactory results since 2 months 2018: granulation tissue 100% covered wound bed time 18.16±6.22d; the wound cure rate is improved from 58.62% to 89.66%; average cost for wound treatment is saved by about 5789.3 yuan, and economic benefit is about 89201.6 yuan
Negative pressure wound treatment effect evaluation index: wound area reduction, time for granulation tissue to cover wound bed 100%, cure rate (%)
Wound area reduction rate: before and after treatment, the length and width of the wound are measured by a digital ruler for changing the medicine each time, and the area is photographed and calculated. The wound area reduction rate was calculated (calculation formula= < area before treatment-current area >/area before treatment×100%).
Time of 100% coverage of granulation tissue on wound bed: days from the start of negative pressure wound treatment to 100% coverage of the wound bed with granulation tissue.
Cure rate (%): number of wound healed by negative pressure treatment/total number of wound healed by negative pressure treatment x 100%.
Experiment: selecting 60 chronic difficult-to-heal wounds which are received and treated by the hospital in 2 months in 2018 to 8 months in 2021, wherein the types of the chronic wounds comprise pressure injury, infection wounds and post-operation delayed healing wounds, the random control method is divided into 30 experimental groups and 30 control groups, and the control groups adopt conventional wet healing dressing for dressing change; after thoroughly debriding the experimental group, the healing effect and the healing time of wounds of two groups of patients are observed by applying the improved negative pressure wound treatment.
Results: the two groups of patients complete the scheduled wound treatment, 2 cases fall off due to disease conditions, 30 cases are treated by dressing change of a wet healing dressing in a control group, 17 cases of wounds heal, 8 cases of wound granulation tissues grow well, 4 cases of wounds have no obvious effect, 1 case of the wounds automatically give up falling off, the time for covering the wound bed with 100% of the granulation tissues is 29.06 th of 5.09d, the wound healing rate is 58.62%, and the average healing time (56.12 th of 9.89 d); the experimental group uses the improved negative pressure wound treatment technology to treat 30 cases of chronic difficult-to-heal wounds, wherein 26 cases are healed completely, 3 cases of wounds have good granulation growth, 1 case of wounds fall off due to disease deterioration, the granulation tissue 100% covers the wound bed for 18.16 soil 6.22d, the wound cure rate is 89.66%, and the average healing time (41.53 soil 10.26) d.
Comparison of clinical efficacy in two groups of patients
Comparison of wound healing Rate and healing time for two groups of patients
The foregoing is a preferred embodiment of the present invention, and modifications, obvious to those skilled in the art, of the various equivalent forms of the present invention can be made without departing from the principles of the present invention, are intended to be within the scope of the appended claims.
Claims (7)
1. Negative pressure wound treatment dressing subassembly, including dressing body, drainage pipeline (1) and negative pressure source, its characterized in that: the dressing comprises a dressing body and a suction part, wherein the fixing part consists of a sealing layer (2) and a decompression layer (3), the suction part comprises a suction pipe body (4), a plurality of suction holes are formed in the surface of the suction pipe body, the suction pipe body is wrapped by a silver-containing oil yarn dressing (5), the suction pipe body (4) is connected with a drainage pipeline (1), and the drainage pipeline (1) is connected with a negative pressure source.
2. The negative pressure wound therapy dressing assembly of claim 1, wherein: the sealing layer (2) adopts medical transparent dressing, and the pressure reducing layer (3) adopts non-viscose foam dressing.
3. The negative pressure wound therapy dressing assembly of claim 1 or 2, wherein: the edge of the transparent dressing exceeds the range of the covered foam dressing by at least 5cm, so that the tightness of the wound surface is ensured.
4. The negative pressure wound therapy dressing assembly of claim 1, wherein: the suction tube body (4) is in a shape of a straight line or a Y shape or a ring shape or a frame shape.
5. The negative pressure wound therapy dressing assembly of claim 1, wherein: the silver-containing oil yarn dressing is spirally wrapped on the suction tube body (4).
6. The negative pressure wound therapy dressing assembly of claim 1, wherein: the drainage pipeline (1) and the suction pipe body are made of silicone rubber.
7. A method of making a negative pressure wound therapy dressing assembly, comprising: the method comprises the following steps:
s1: according to the wound surface area and cavity size, suction tube bodies with different shapes are designed;
s2: cutting silver-containing oil yarn dressing into long strips, and spirally wrapping the silver-containing oil yarn dressing on the surface of a self-made disposable multi-side hole suction tube body;
s3: the suction tube body is kept smooth and externally connected with one end of a drainage pipeline;
s4: the surrounding skin of the wound is stuck with a small foam dressing for decompression protection, and the wound surface is sealed by a transparent dressing without adhesive foam dressing;
s5: the transparent film dressing at the leading-out position of the drainage pipeline is closed by a 'tying film' method, the exposed part of the drainage pipe is not adhered under tension, the edge of the sticking film exceeds the range of the covered foam dressing by at least 5cm, and the tightness of the wound surface is ensured;
s6: and finally, the other end of the drainage pipeline is connected with a central negative pressure source, the body position and the pressure value are adjusted, the pressure value is different according to the selection of different wound types, wound sizes, positions and the like, the negative pressure suction is continuously carried out, the replacement is carried out once in 72 hours, and the wound healing is rapidly promoted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410140235.4A CN117860479A (en) | 2024-01-31 | 2024-01-31 | Negative pressure wound therapy dressing assembly and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410140235.4A CN117860479A (en) | 2024-01-31 | 2024-01-31 | Negative pressure wound therapy dressing assembly and manufacturing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN117860479A true CN117860479A (en) | 2024-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410140235.4A Pending CN117860479A (en) | 2024-01-31 | 2024-01-31 | Negative pressure wound therapy dressing assembly and manufacturing method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN117860479A (en) |
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- 2024-01-31 CN CN202410140235.4A patent/CN117860479A/en active Pending
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