Mattress capable of preventing pressure sores

A technology for preventing pressure ulcers and mattresses, which is applied to hospital beds, medical science, hospital equipment, etc., can solve the problems of poor heat dissipation and massage functions, high production cost, complex structure, etc., and achieves good heat dissipation and massage functions, low cost, simple structure

Inactive Publication Date: 2017-03-22
THE THIRD AFFILIATED HOSPITAL OF THIRD MILITARY MEDICAL UNIV OF PLA
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AI-Extracted Technical Summary

Problems solved by technology

[0005] For long-term bedridden patients, the key to preventing decubitus ulcers is to activate blood circulation and cool down the oppressed tissues of the patient. At present, mattresses with heat dissipation and massage functions are often used to solve the above problems...
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Method used

The present invention will be described in detail below in conjunction with accompanying drawing, as shown in Figure 1: a kind of anti-pressure sore mattress, comprises mattress body 1, and described mattress body upper surface is provided with the bag that is made of rubber material Body 2, the inner wall of the bag is provided with a waterproof and breathable material film 3, the bag is filled with water 4, the wall of the bag is provided with air holes 5, and the inner surface of the mattress body is provided with a self-excited oscillating flow that is repeatedly bent and close to the upper surface. A heat pipe, the self-excited oscillating flow heat pipe is provided with an evaporator 7 on one side and a condenser 8 on the other side, and a plurality of cavity-shaped grid frames 9 are arranged in the self-excited oscillating flow heat pipe along the pipe extending direction. Fixed particles 10 (millimeter or micron order) are arranged in the grid. The anti-pressure sore mattress of this structure, on the one hand, water has a cooling effect on the human body, and at the same time, the patient lies on the capsule body, and as the patient turns over and other activities, the capsule body is in the alternate transformation of shrinking and expanding. Accelerating the convection of water not only makes the heat dissipation uniform, but also improves the heat dissipation efficiency. In addition, the water flow can give a suitable impact force to the compressed tissue and improve the effect of promoting blood circulation and dredging collaterals; The working medium is encapsulated in the flow heat pipe, and the working medium forms a plunger between the liquid and vapor phases in the tube. At the end of the evaporator, the working medium is heated, causing the bubbles to expand, and pushing the liquid-vapor plunger to flow to the condenser to stop condensation and c...
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Abstract

The invention discloses a mattress capable of preventing pressure sores. The mattress comprises a mattress body, wherein a capsule body made of rubber is disposed on the upper surface of the mattress body; a film made of a waterproof and breathable material is disposed on the inner wall of the capsule body; the capsule body is filled with water; vent holes are formed in the capsule body wall; a repeatedly bent self-oscillation flow heat pipe is disposed inside the mattress body near the upper surface; an evaporator is disposed on one side of the self-oscillation flow heat pipe, and a condenser is disposed on the other side; multiple cavity-shaped net frames are disposed inside the self-oscillation flow heat pipe along the pipeline extending direction; and fixed particles are disposed in the net frame. The mattress capable of preventing the pressure sores with the structure has the advantages of the simple structure, low cost, good heat dissipation effects and good massage functions.

Application Domain

Physical therapyNursing beds +3

Technology Topic

EvaporatorBiomedical engineering +6

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  • Mattress capable of preventing pressure sores

Examples

  • Experimental program(1)

Example Embodiment

[0014] The present invention will be described in detail below with reference to the drawings, such as figure 1 Shown: a pressure sore-proof mattress, comprising a mattress body 1, the upper surface of the mattress body is provided with a bladder 2 made of rubber material, the inner wall of the bladder is provided with a waterproof and breathable material film 3, the bladder The body is filled with water 4, the wall of the capsule body is provided with vents 5, a self-excited oscillating flow heat pipe that is repeatedly bent is arranged near the upper surface of the mattress body, and an evaporator 7 is provided on one side of the self-excited oscillating flow heat pipe. A condenser 8 is arranged on the other side, and a plurality of cavity-type grid frames 9 are arranged in the self-excited oscillating flow heat pipe along the extension direction of the pipeline, and fixed particles 10 (millimeter or micrometer level) are arranged in the grid frame. The anti-pressure sore mattress of this structure, on the one hand, water has a cooling effect on the human body, and at the same time, the patient lies on the capsule. As the patient turns over and other activities, the capsule will be in the alternate transformation of shrinking and expanding. Accelerating the convection of water not only makes the heat dissipation uniform, but also improves the heat dissipation efficiency. In addition, the water flow can give appropriate impact to the compressed tissue and improve the effect of promoting blood circulation and dredging collaterals; on the other hand, the patient lies on the capsule and self-excited oscillation The working medium is encapsulated in the flow heat pipe. The working medium forms a plunger between the liquid and vapor phases in the pipe. At the evaporator end, the working medium is heated, which causes the bubble to expand and pushes the liquid-vapor plunger to flow to the condenser. The convective heat transfer process between the two-phase fluid in the steady-state phase transition process and the wall of the self-excited oscillating flow heat pipe can ensure the heat dissipation effect; due to the staggered distribution of the liquid-vapor plunger, it can produce strong reciprocating oscillation. , Oscillation can cause the capsule body to oscillate, massage the patient’s body, weaken the pressure state, and promote the blood circulation and collaterals of the compressed tissue. On the other hand, the oscillation can make the convective heat transfer process greatly strengthened by the action of severe pulsating flow. In addition, when the liquid phase working medium flows through the grid, the interaction and collision between the solid particles and the solid particles, between the solid particles and the liquid, and between the solid particles and the self-excited oscillating flow heat pipe make the liquid cross-sectional velocity distribution flat. The laminar flow bottom layer is reduced, the flow turbulence intensity is enhanced, and the heat conduction and heat dissipation capabilities are further improved. In addition, compared to adding solid particles directly to the liquid phase working medium, under the limit of the grid, the solid particles can be effectively prevented from being subjected to static Electricity, Brown's force, etc. accumulate together to cause wear and blockage. Therefore, the anti-pressure sore mattress of this structure has the advantages of simple structure, low cost, and good heat dissipation and massage functions.
[0015] As a further improvement of the above technical solution, a heating wire 11 is provided in the capsule. In winter or when the temperature is low, the water in the capsule is heated by the heating wire to keep it warm in winter and cool in summer.
[0016] As a further improvement of the above technical solution, the self-excited oscillating flow heat pipe includes a thick tube body 61 and a thin tube body 62 that are alternately connected. In this way, a self-excited oscillating flow heat pipe with a non-uniform cross-section is formed, so that the fluid in the pipe expands rapidly along the thick tube body after being heated at the evaporator end, and flows to the condenser, and flows back to the evaporator end along the thin tube body after condensing at the condenser end. This effectively improves the circulating power of the working medium and improves the heat dissipation capacity.
[0017] As a further improvement of the above technical solution, a valve 12 is provided on the capsule body, and water can be injected into the capsule body or discharged from the capsule body through the valve.
[0018] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be implemented Modifications or equivalent replacements without departing from the purpose and scope of the technical solution of the present invention should be covered by the scope of the claims of the present invention.

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