Unlock instant, AI-driven research and patent intelligence for your innovation.

Negative pressure drainage dressing with wound flushing function

A negative pressure drainage and wound surface technology, applied in dressings, viscous dressings, non-adhesive dressings, etc., can solve the problems of easy cleaning and discharge, inconvenient use, uneven flushing, etc., to reduce adhesion, improve cleaning rate, and improve cleaning. effect of effect

Active Publication Date: 2022-02-11
湖南德普斯医疗科技有限公司
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1) It is inconvenient to use. Before use, professionals need to trim the wound according to the condition of the wound, and manually stick the tube and film
[0005] 2) The liquid flushing channel is conveyed or flowed out of the main channel by the drainage tube with small holes, the flushing is uneven, and it is easy to have dead space for cleaning and discharge
The disadvantage of this patented product is that the main structure of the dressing has no wound cleaning function and is not suitable for severely infected wounds
The disadvantage of this patented product is that: although the dressing has a flushing function, the positive pressure flushing tube is designed with a single tube and a single outlet; although the flushing line involves a special 3D printed biological scaffold layer, the pipeline inside the biological scaffold layer is actually an invisible tube The flushing effect is not good; the actual flushing effect of different pipelines and structures is not analyzed and optimized

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Negative pressure drainage dressing with wound flushing function
  • Negative pressure drainage dressing with wound flushing function
  • Negative pressure drainage dressing with wound flushing function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] see Figure 1-3 As shown, a negative pressure drainage dressing with wound flushing function includes a dressing body 13, one end of the dressing body 13 is provided with a flushing assembly 14, and the other end of the dressing body 13 is provided with a drainage catheter 15, and the other end of the drainage catheter 15 communicates with There is a drainage tank 12, and the drainage tank 12 is also connected with a negative pressure source 11;

[0033] The dressing body 13 is sequentially provided with a perforated silicone gel layer 23, a sandwich cloth 24, a polyurethane sponge 22, and a polyurethane water-blocking and breathable membrane 21 from the wound contact surface, and a number of long shuttle-shaped Through hole, the long axis of the long shuttle-shaped through hole is consistent with the drainage direction of the dressing. The wound exudate or cleaning fluid enters and exits through the long shuttle-shaped through hole. The long shuttle-shaped through hole...

Embodiment 2

[0040] In this embodiment, under the same experimental conditions, the drainage situation of dressing body 13 composed of sandwich cloth 24 with different structures is compared, and the specific implementation conditions are as follows:

[0041] The negative pressure of the negative pressure source 11 is maintained at 120mmHg;

[0042] Dressing area: 20cm*10cm;

[0043] Seepage simulated liquid: bovine serum (80% concentration), PBS solution;

[0044]Negative pressure value detection: a probe-type negative pressure sensor probe is installed inside the drainage flushing hole 26 to monitor the negative pressure value in real time;

[0045] The parameters of sandwich cloth 24: sandwich cloth 24 is formed by weaving pure polyester monofilament, thickness is 3mm, monofilament silk diameter 0.08mm (fineness 70dtex), the monofilament layer of different sandwich cloth 24 and close weave layer (hole density is 625 holes / dm 2 ) are the same, the mesh shape of the mesh layer is a reg...

Embodiment 3

[0067] In view of the influence of the different sizes and proportions of the mesh layers of the sandwich cloth 24 in Example 2 on the overall drainage of the dressing body 13, the influence of different mesh shapes on the negative pressure drainage was further analyzed, and corresponding different sandwich cloths 24 were prepared. The sandwich cloth 24 of different mesh layer mesh shapes is prepared with the optimal condition range close to Example 1 (there is a mesh structure sandwich cloth 24, the mesh layer structure number K6), and other experimental conditions and detection methods are all the same as those in the embodiment. 2, the specific test results are shown in Table 2:

[0068] Table 2

[0069]

[0070] It can be seen from Table 2 that within the range of similar mesh and hole area ratios, different mesh shapes have similar effects on negative pressure attenuation and seepage blockage, and there is no statistical difference in the data between groups. The main...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Wire diameteraaaaaaaaaa
Thicknessaaaaaaaaaa
Wire diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a negative pressure drainage dressing with a wound flushing function, and belongs to the technical field of biomedical materials. The dressing comprises a dressing body, one end of the dressing body is provided with a flushing assembly, the other end of the dressing body is provided with a drainage catheter, the other end of the drainage catheter communicates with a drainage tank, and the drainage tank is further communicated with a negative pressure source; the sandwich cloth with the three-layer three-dimensional mesh cloth structure is used in the dressing body, on one hand, the three-dimensional structure of the sandwich cloth maintains a liquid drainage channel under the negative pressure condition, on the other hand, the designed special woven mesh layer structure can ensure that a better cleaning effect is achieved for wound surface cleaning, and the residual amount of bacteria is small after cleaning; the flushing pasting pipe is arranged at the flushing end, a guide pipe does not need to be embedded, the process that pipe pasting is conducted after automatic compounding during dressing manufacturing can be achieved, and the automatic working procedure of dressing production compounding is not affected; the existing steps of foam cutting and water-blocking breathable film attaching are omitted, and the dressing can be used by directly covering the wound surface with the dressing body and then sealing the four edges.

Description

technical field [0001] The invention belongs to the technical field of biomedical materials, and in particular relates to a negative pressure drainage dressing with the function of washing wound surface. Background technique [0002] Dressings are medical materials used to cover sores, wounds or other damage. With the in-depth study of the pathophysiology of the wound healing process, people's understanding of the wound healing process has become more and more profound, thus promoting the continuous improvement of medical wound dressings and development. [0003] The main structure of the traditional negative pressure drainage foam dressing is a polyurethane (or PVC) foam block, a water-blocking breathable film and a drainage tube with many small holes. The basic method used is that the polyurethane foam block is trimmed and filled on the wound surface, covered with a water-blocking and breathable film, and 1-2 drainage tubes with small holes are inserted in the polyurethan...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A61F13/02A61M1/00A61M3/02
CPCA61M3/0279A61F13/01029A61F13/05Y02A50/30
Inventor 郭瀛军汪胜奇叶海雁刘抗
Owner 湖南德普斯医疗科技有限公司