CN2738767Y

CN2738767Y - Pressure-reducing seat cushion

Info

Publication number: CN2738767Y
Application number: CN 200420104890
Authority: CN
Inventors: 邓复旦
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-10-10
Filing date: 2004-10-10
Publication date: 2005-11-09
Anticipated expiration: 2014-10-10

Abstract

The utility model relates to a pressure-reducing seat cushion, comprising a lower base, an upper base, a cushion, a universal joint and four elastic supporting members. The cushion is arranged on the upper base. The universal joint is arranged between the lower base and the upper base and leaves a preset distance between the lower base and the upper base. When the user sits on the cushion, the user can utilize the self excursion of the centre of gravity to drive the upper base inclining toward any direction in order to lower the pressure-time integral value born by the body surface of the user to lower the generating probability of a pressure sore. Two ends of the elastic supporting members respectively bunt the lower base and the upper base and provide an elastic damping force when the upper base inclines.

Description

Pressure-reducing seat cushion

Technical field

This utility model is relevant with the disability accessory, particularly about a kind of Pressure-reducing seat cushion that reduces pressure ulcer generation probability.

Background technology

For the patient of some quadriplegia, the injured or apoplexy person as vertebra needs to be sitting on the wheelchair for a long time and for a long time; According to the document record, the patient of above-mentioned long-term dependance on wheel chair (wheelchair-bound patients) must be sitting on the wheelchair nearly 3 to 14 hours of every day, and therefore, they are for producing the high-risk group of pressure ulcer (pressure ulcers).And according to EPDML statistics, the quadriplegia of half (tetraplegia) patient and 30% lower extremity paralysis (paraplegia) patient have the symptom of pressure ulcer to produce.Therefore, select suitable wheel cushion to work as important problem to reduce pressure ulcer generation probability phasing.

Be the medicated cushion of purpose generally, following two kinds of designs arranged to lower pressure ulcer generation probability:

One is for reducing the pressure peak (pressure peak) that body surface bore, it is lower than organizes capillary tube locking pressure (ischial tuberosities pressure), as become form medicated cushion (model cushion), its design principle is that seat surface has the cambered surface that cooperates the body surface shape, increase the contact area of body surface and medicated cushion, average pressure distributes, to reduce the situation that body surface produces pressure peak.

But the generation of pressure ulcer is not single only to be the problem of pressure size, also relevant with the body surface pressurized time, that is pressure-time integral value (pressure-time integral value) of inquiring into of medical circle, therefore, before reach the shape medicated cushion under long-time the use, can reducing pressure ulcer, to produce the effect of locomotive limited.

Another kind of design principle is the medicated cushion of reduction pressure-time integral value, as filling disappointing medicated cushion alternately, its medicated cushion inside has a plurality of air bags, utilizes an inflation motor that these air bags are presented and periodically fills air deflating state alternately, to reduce pressure-time integral value that body surface was born.Mutual Air-filled cushion can prevent that the effect of pressure ulcer generation is preferable; So, the equipment mechanism complexity, the cost height is its maximum problem.

The utility model content

Main purpose of the present utility model is to provide a kind of Pressure-reducing seat cushion, can lower cost reaches the preferable pressure ulcer effect that prevents.

For achieving the above object,, include according to Pressure-reducing seat cushion provided by the utility model:

Two pedestals, the two generally is parallel arranged side by side;

One pad is located at this two pedestal on one of them, is available for users to sit thereon;

One gimbal suspension is located between this two pedestal, makes the two from a preset distance, so that wherein can the tilting towards any direction with respect to another person of this two pedestal; And

At least one elastic supporting member for supporting optical member, its two end is resisted against this two pedestal respectively, and with when this pedestal tilts, this elastic supporting member for supporting optical member can provide an elastic anchorage force.

Wherein this gimbal suspension generally is the spheroid of a semicircle, and its planar end is fixedly arranged on wherein one of this two pedestal, and an arcual end then is resisted against another person.

Wherein this pedestal wherein one be provided with a holding groove, be installed with at least one part of this gimbal suspension arc tips.

Wherein this gimbal suspension generally is a circular spheroid, and the precalculated position of this two pedestal respectively is provided with a holding groove, supplies at least one adjacent part of this gimbal suspension to be installed with.

Wherein this pad upper end has a forming section, according to the formed recess of user body surface shape.

Wherein this two pedestal wherein one be provided with at least one screw, each screw can be locked for a screw; One end of this elastic supporting member for supporting optical member is located in this screw, and is resisted against on this screw.

Wherein another person of this two pedestal is provided with at least one groove, corresponding to the screw of this lower base, can be located in this groove for the other end of this elastic supporting member for supporting optical member.

Wherein this elastic supporting member for supporting optical member is a helical spring.

Description of drawings

Below lift a preferred embodiment conjunction with figs. now this utility model is further described, wherein:

Fig. 1 is the exploded perspective view of this utility model embodiment.

Fig. 2 is the axonometric chart of this utility model embodiment.

Fig. 3 is the cutaway view along 3-3 hatching line among Fig. 2.

Fig. 4 is one of user mode sketch map of this utility model embodiment.

Fig. 5 be this utility model embodiment the user mode sketch map two.

The specific embodiment

See also Fig. 1 and shown in Figure 2, the Pressure-reducing seat cushion that this utility model embodiment is provided includes:

Two pedestals (10) (20), for by the made rectangle block of rubber, timber, metal or plastic cement, the two be parallel side by side; For convenience of description, deserve to be called pedestal (20) below the pedestal above being positioned at, be positioned at the title lower base (10) of below.This lower base (10) respectively is provided with a screw (12) in the position near quadripolar corners; Four screws (13) are locked these screws (12) respectively by the bottom of this lower base (10); The bottom central authorities of this upper pedestal (20) have one and are circular-arc holding groove (21), respectively have a groove (22) near the position of quadripolar corners, corresponding to the screw (12) on this lower base (10).

One pad (30) is located at the upper end of this upper pedestal (20), has a forming section (31) on it, and it is according to the formed recess of user body surface shape.

One gimbal suspension (40), this gimbal suspension is one slightly to be the spheroid of semicircle among this utility model embodiment, it is a planar end and is fixedly arranged on this lower base (10) upper end central authorities (in fact this gimbal suspension (40) also can be one-body molded with this lower base (10)), the outer end of circular arc then is located in the holding groove (21) of this upper pedestal (20) bottom, makes this lower base (10) and this upper pedestal (20) be approximately 1 to 2 centimeter apart.

Four elastic supporting member for supporting optical member (50), see also Fig. 3, these elastic supporting member for supporting optical member (50) are helical spring among this utility model embodiment, respectively an end of this spring (50) is located in respectively in these screws (12) by the upside of this lower base (10), and be resisted against on these screws (12), the other end then is located in respectively in the groove (22) of this upper pedestal (20); Have this lower base of connection (10) and this upper pedestal (20), and the effect that this upper pedestal (20) elastic force is provided.

See also Fig. 4, when user is sitting on the Pressure-reducing seat cushion provided by the utility model, forming section (31) on this pad (30) can increase the body surface area that user contacts with this pad (30), average pressure distribution (P), the pressure peak that body surface is born is reduced to be organized below the capillary tube locking pressure, to reduce the probability that pressure ulcer produces; The firm sitting posture of user is sitting on this pad (30) to avoid user, because of health sliding friction body surface produces injury in addition.

Removing leading portion discusses, the mechanism that the main attenuating pressure ulcer of Pressure-reducing seat cushion provided by the utility model produces probability is: see also Fig. 4 equally, when user is sitting on this upper pedestal, when being kept upright, gravity center of human body (Wg) position approximately is arranged in the position, axle center (shown in the dotted line of figure) of this gimbal suspension (40) as its trunk (trunk); When user lifts arm, rotary head or trunk and slightly offsets to one side, all can cause the skew of gravity center of human body (Wg), see also Fig. 5, gravity center of human body's this moment (Wg) departs from the axle center of this gimbal suspension (40), promptly can cause this upper pedestal (20) to lopsidedness, and make the pressure distribution (P) of body surface change.

See also Fig. 5, be positioned at the elastic supporting member for supporting optical member (50) of quadripolar corners, in order to connect this lower base (10) and this upper pedestal (20), and when tilting, this upper pedestal (20) provides an elastic force (FD), this upper pedestal (20) can be returned back to the effect of center state and damping (Damping), make user can obtain preferable comfort in use; Can optionally adjust these screws (13) in addition, with compression or loosen these elastic supporting member for supporting optical member (50), make these elastic supporting member for supporting optical member (50) that elastic force in various degree (heavier user may need higher elastic force as body weight) can be provided, to meet different users's demand.

With mechanical analysis, this upper pedestal (20) is in the state of a kind of unstable equilibrium (unstable balance), because except gravity center of human body (Wg) and this gimbal suspension (40) axle center a straight line, the a little mobile skew that all can cause gravity center of human body (Wg) that the partes corporis humani divides, cause this upper pedestal (20) constantly to tilt to all directions, and make the pressure distribution (P) of body surface constantly change, pressure-the time integral value that makes each position unit are of body surface be born at last reduces, lower the probability that human body produces pressure ulcer with this, therefore, the inventor is referred to as " Pressure-reducing seat cushion ".

What propose explanation at last is: among this utility model embodiment, and this gimbal suspension and not exclusive enforcement aspect.For example: this gimbal suspension (40) turned around be installed on this upper pedestal (20), holding groove then is located on this lower base (10).Perhaps, this gimbal suspension (10) is spherical in shape, respectively is provided with circular-arc structures such as holding groove on this lower base (10) and this upper pedestal (20), all can reach identical effect.

The utility model has the advantage of: simple in structure, be easy to carry and cost of manufacture low, and sharp With the phenomenon that the gravity center of human body is offset naturally, reach the effect of dynamic decompression, the probability that pressure sore is produced Reduce.

Claims

1. a Pressure-reducing seat cushion is characterized in that, includes:

Two pedestals, the two generally is parallel arranged side by side;

One pad is located at this two pedestal on one of them;

One gimbal suspension is located between this two pedestal, and this two pedestal is from a preset distance, wherein can the tilting towards any direction with respect to another person of this two pedestal; And

At least one elastic supporting member for supporting optical member, its two end is resisted against this two pedestal respectively.

2. according to the described Pressure-reducing seat cushion of claim 1, it is characterized in that wherein this gimbal suspension generally is the spheroid of a semicircle, its planar end is fixedly arranged on wherein one of this two pedestal, and an arcual end then is resisted against another person.

3. according to the described Pressure-reducing seat cushion of claim 2, it is characterized in that, wherein this pedestal wherein one be provided with a holding groove, be installed with at least one part of this gimbal suspension arc tips.

4. according to the described Pressure-reducing seat cushion of claim 1, it is characterized in that wherein this gimbal suspension generally is a circular spheroid, the precalculated position of this two pedestal respectively is provided with a holding groove, is installed with at least one part of this gimbal suspension.

5. according to the described Pressure-reducing seat cushion of claim 1, it is characterized in that wherein this pad upper end has a forming section, according to the formed recess of user body surface shape.

6. according to the described Pressure-reducing seat cushion of claim 1, it is characterized in that, wherein this two pedestal wherein one be provided with at least one screw, each screw is locked for a screw; One end of this elastic supporting member for supporting optical member is located in this screw, and is resisted against on this screw.

7. according to the described Pressure-reducing seat cushion of claim 6, it is characterized in that wherein another person of this two pedestal is provided with at least one groove, corresponding to the screw of this lower base, the other end of this elastic supporting member for supporting optical member is located in this groove.

8. according to the described Pressure-reducing seat cushion of claim 1, it is characterized in that wherein this elastic supporting member for supporting optical member is a helical spring.