Pressure dressing
By designing a multi-layered pressure dressing, using a ring-shaped airbag to generate gas pressure at the puncture point, and combining it with a force-sensitive color-changing indicator ring to monitor the pressure, the problem of cumbersome hemostasis procedures and poor hemostasis effects at the puncture point is solved, achieving rapid and effective hemostasis and simple operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI EAST HOSPITAL EAST HOSPITAL TONGJI UNIV SCHOOL OF MEDICINE
- Filing Date
- 2026-04-20
- Publication Date
- 2026-06-02
AI Technical Summary
Existing techniques for hemostasis at puncture sites are cumbersome, manual pressure is uneven and difficult to maintain, resulting in limited hemostasis. Furthermore, specialized hemostatic devices are expensive and difficult to popularize.
A multi-layered pressure dressing is designed, comprising an observation port, an annular air bladder, an inner bladder, and a powder chamber for storing baking soda. The annular air bladder generates gas to compress the puncture point, and the pressure is monitored by a force-sensitive color-changing pressure indicator ring, thereby achieving rapid hemostasis.
It achieves rapid and effective hemostasis, is simple to operate, has controllable pressure, reduces the operational burden on patients and medical staff, and has relatively low cost.
Smart Images
Figure CN224307360U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical consumables technology, and in particular to a pressure dressing technology. Background Technology
[0002] Currently, hemostasis at puncture sites in clinical practice mainly relies on manual pressure or the use of ordinary dressings with tape for fixation. This requires patients or medical staff to apply continuous pressure for 5-15 minutes, which is cumbersome. When patients apply pressure, uneven pressure or insufficient time often leads to bleeding, hematoma, or bruising. The above manual pressure methods are difficult to control and cannot maintain stable pressure, resulting in limited hemostatic effect. Existing specialized hemostatic devices are expensive and difficult to popularize in routine punctures. Utility Model Content
[0003] In view of the deficiencies in the existing technology, the technical problem to be solved by this utility model is to provide a pressure dressing that is simple to operate, can quickly stop bleeding, and has a good hemostatic effect.
[0004] To solve the above-mentioned technical problems, the present invention provides a pressure dressing, comprising a dressing pad, wherein:
[0005] The dressing pad has a through-hole in the middle, and the upper opening of the observation hole is covered with a transparent observation sheet. The dressing pad has a multi-layer structure, which consists of a pressing layer, an exudate absorption layer, a sealing air cushion, a reaction layer, and a contact layer for adhering to the patient's skin from top to bottom. The reaction layer has an annular air bladder around the observation hole. The annular air bladder contains an inner bladder containing liquid citric acid and a powder compartment for storing baking soda. The bottom of the contact layer has release paper.
[0006] Furthermore, the dressing pad is provided with fixing wings at both ends for attaching to the patient's skin.
[0007] Furthermore, the seepage absorption layer is an absorbent polymer pad.
[0008] Furthermore, the pressing layer is provided with a pressure indicator ring that can change color due to pressure around the transparent observation sheet.
[0009] The pressure dressing provided by this utility model can rupture the inner bladder of the annular air bladder in the reaction layer by squeezing the compression layer, which can generate gas in the annular air bladder. The annular air bladder presses upward on the pressure indicator ring, and the pressure status can be observed by the color change of the indicator ring. The annular air bladder presses downward on the area around the puncture point, which can quickly and effectively stop bleeding. Compared with manual pressure, the hemostatic effect is better and the operation is simple. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of the pressure dressing according to an embodiment of the present invention;
[0011] Figure 2 This is a partial schematic diagram of the multi-layer structure of the dressing pad according to an embodiment of the present invention. Detailed Implementation
[0012] The embodiments of this utility model are described in further detail below with reference to the accompanying drawings. However, these embodiments are not intended to limit this utility model. Any similar structures or variations thereof that adopt this utility model should be included in the protection scope of this utility model. The commas in this utility model all indicate the relationship between and.
[0013] like Figures 1-2 As shown, the pressure dressing provided in this embodiment of the present invention includes a dressing pad 1;
[0014] The dressing pad has a through-hole in the middle, and the upper opening of the observation hole is covered with a transparent observation sheet 2. The dressing pad 1 has a multi-layer structure, which consists of a pressing layer 11, an exudate absorption layer 12, a sealing air cushion 15, a reaction layer 13, and a contact layer 14 for adhering to the patient's skin from top to bottom. The reaction layer 13 has an annular air bladder around the observation hole. The annular air bladder contains an inner bladder 131 containing liquid citric acid and a powder compartment 132 storing baking soda. The bottom of the contact layer 14 is provided with release paper.
[0015] In this embodiment of the present invention, the left and right ends of the dressing pad 1 are respectively provided with fixing wings 3 for attaching to the patient's skin, the exudate absorption layer 12 is an absorbent polymer pad, and the pressure layer 11 is provided with a pressure indicator ring 4 that can change color due to pressure around the transparent observation sheet 2.
[0016] The pressure indicator ring is existing technology; this embodiment uses a force-sensitive color-changing material.
[0017] The dressing provided by this utility model is suitable for hemostasis after puncture.
[0018] When using, peel off the release paper on the contact layer 14 and align the observation hole with the puncture point on the patient's skin, so that the contact layer adheres to the patient's skin. At this time, press the top of the inner bladder with your finger (there are indicator marks in the pressing area) to rupture the inner bladder. The mixture of citric acid and baking soda continuously produces carbon dioxide gas, which expands the annular air bladder. The annular air bladder presses upward to change the color of the pressure indicator ring, while at the same time the annular air bladder presses downward to the area around the puncture point, forming a stable pressure on the wound. After the air bladder is fully inflated, leave it to stand to achieve hemostasis.
Claims
1. A pressure dressing, comprising a dressing pad, characterized in that: The dressing pad has a through-hole in the middle, and the upper opening of the observation hole is covered with a transparent observation sheet. The dressing pad has a multi-layer structure, which consists of a pressing layer, an exudate absorption layer, a sealing air cushion, a reaction layer, and a contact layer for adhering to the patient's skin from top to bottom. The reaction layer has an annular air bladder around the observation hole. The annular air bladder contains an inner bladder containing liquid citric acid and a powder compartment for storing baking soda. The bottom of the contact layer has release paper.
2. The pressure dressing according to claim 1, characterized in that: The dressing pad has fixing wings at both ends for attaching to the patient's skin.
3. The pressure dressing according to claim 1, characterized in that: The seepage absorption layer is an absorbent polymer pad.
4. The pressure dressing according to claim 1, characterized in that: The pressing layer is provided with a pressure indicator ring that can change color due to pressure, surrounding the transparent observation sheet.