CN2146974Y

CN2146974Y - Inner and external sealing rubber ring for positive and negative pneumatic therapeutic machine

Info

Publication number: CN2146974Y
Application number: CN 93203034
Authority: CN
Inventors: 张正印; 王丰江; 张启涛
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-02-10
Filing date: 1993-02-10
Publication date: 1993-11-24
Anticipated expiration: 2003-02-10

Abstract

The utility model relates to an inner and external sealing rubber ring for a positive and negative pneumatic therapeutic machine, which belongs to the medical instrument. The utility model aims to solve the sealing problems of air leakage, air inlet, puckering, etc. The main structure of the utility model is characterized in that a pumping and inflating nozzle 1 is fixed in a rubber ring body 2; a framework is assembled in an inner cavity of the rubber ring body 2; an inner ring protrudes outwards; the outer ring surface is provided with protruded sealing rings. The utility model has the advantages that the rubber ring can carry out pumping and inflation; after the rubber ring is inflated, the phenomena of the air leakage, the air inlet and the puckering do not exist; the sealing property is good; limbs of patients are conveniently placed in the rubber ring; the range of use for the patients is enlarged; the rubber ring can completely reach design standards through experiments, so the therapeutic efficiency is enhanced.

Description

Inner and external sealing rubber ring for positive and negative pneumatic therapeutic machine

This utility model belongs to the inside and outside O-ring seal in the medical apparatus and instruments positive and negative air-pressure therapy apparatus.

In existing technology, sealing load trunk section in the positive and negative air-pressure therapy apparatus, assemble inflatable cushion rubber, its objective is: annular (like hollow cylinder) cushion rubber external diameter periphery is sealed and matched with barochamber oral area internal diameter (wall), cushion rubber internal diameter and patient go up (or down) limbs and do being sealed and matched of less pressure, so that make the patient's limbs that put in the sealing load cabin carry out positive negative pressure of air or pure oxygen positive pressure therapy; Its structure is that cushion rubber is the annular cylinder, and the cushion rubber external diameter is sealed and matched with plane form and barochamber oral area, and the cushion rubber internal diameter cooperates with plane and patient's limbs equally, and cushion rubber has an air-filled pore outward, assembling skeleton in the cushion rubber.Its weak point is: (1) so sealing property is relatively poor, usually makes gas leakage or air inlet in the barochamber because the cushion rubber external diameter cooperates with the barochamber oral area with plane form, though the sealed pressure area increases, pressure is less, only forms a band; The hospital that has is in order to reduce gas leakage or the air inlet phenomenon in the barochamber, (general conventional pressure is 5～15Kpa) must not no longer to increase the cushion rubber internal pressure, cause the patient in 15～30 minute treatment time, limbs are subjected to the pressure of cushion rubber excessive, blood circulation is not smooth, the patient not only is difficult to bear, and influences therapeutic effect, even might have side effects.(2) because the cushion rubber internal ring wall also is to be sealed and matched with plane form and patient's limbs, so this cushion rubber is no wrinkle annular cylinder under nothing inflation naturalness, in case inflation, ring contraction in the cushion rubber, because of but can't shortening, its radical length make the cushion rubber internal ring produce the fold phenomenon, the fold place will produce gas leakage and air inlet phenomenon, and sealing is very poor, can not reach instructions for use.(3) because this cushion rubber can not satisfy the patient's of all ages and classes, different limbs diameters instructions for use, so barochamber must be equipped with the cushion rubber of more various different models in this armarium, this makes manufacturing cost too high not to the utmost, and has increased the trouble of using operation.

The purpose of this utility model is the weak point of avoiding in the above-mentioned technology, and a kind of novel inside and outside sealable cushion rubber is provided, and solves gas leakage, air inlet, the problem of sealing difference such as fold phenomenon occurs, and can make the cushion rubber inflation and bleed, and increases work efficiency and practicality.

Technical solution of the present utility model is: fixedly take out inflation gas in the cushion rubber body 2 and chew 1, the assembling of cushion rubber body 2 intracavity is by the typing skeleton of fixedly forming with pillar 3 between the annular backup pad 4 up and down, main feature is: annular sealant circle body 2 internal ring cambered surfaces are protruded with patient's limbs to centrage and are sealed and matched, and have the sealing ring of 2 to 4 projectioies and barochamber 6 to be sealed and matched on the outer ring surface.

The technical solution of this practical meter type also comprises:

Cushion rubber body 2 one end ring shape concave sides also can assemble cushion rubber lid 5 and form the plane.

The triangular in shape or little circular arc of raised seals ring section or rectangle or trapezoidal or long arc shape on cushion rubber body 2 outer ring surfaces.

O-ring seal also can be made up of for one pre-buried bracing frame and cushion rubber body 2, cushion rubber lid 5.

The height that is annulated column shape fluid sealant circle body 2 is the 50-120 millimeter.

The description of drawings of this practical meter type is as follows:

Fig. 1 is a half sectional view;

Fig. 2 is that Fig. 1 overlooks and dwindles view;

Fig. 3, Fig. 4, Fig. 5, Fig. 6 are the equivalent raised seals ring sketch maps after the local amplification of I among Fig. 1.

Above-mentioned number in the figure is described as follows:

1-takes out charging connector; 2-fluid sealant circle body; The 3-pillar; The 4-gripper shoe; 5-cushion rubber lid; The 6-sealed compartment.

The embodiment of this practical meter type is described as follows:

Embodiment 1: see that accompanying drawing Fig. 1 is to shown in Figure 6, assembling supporting and shaping skeleton in ring apron body 2 cavitys, skeleton is made up of the pillar 3 of fixing 4 symmetrical distributions up and down between the annular backup pad 4, taking out inflating nozzle 1 is assemblied in the cushion rubber body 2, correspondence is taken out the bonding ring apron lid 5 of charging connector cushion rubber body 2 another loop concaves, cushion rubber body 2 internal ring cambered surfaces are protruded with patient's limbs to centrage and are sealed and matched, 2 to 4 (3 of figure acceptances of the bid) section protrusion sealing rings triangular in shape are arranged on its outer ring surface, perhaps adopt little circular arc, rectangle, trapezoidal and long arc shape protrudes sealing ring, and the cushion rubber height is the 50-120 millimeter.

Embodiment 2, and substantially with embodiment 1, difference is that cushion rubber body 2 can be integral with cushion rubber lid 5, and support frame is a built-in fitting, and the cushion rubber height is similarly the 50-120 millimeter.

Operation principle of the present utility model is like this, be assemblied in this utility model on the barochamber, it is taken out charging connector 1 and connects quantitatively control inflation exhaust tube, when needs of patients is treated, bleed earlier, the O-ring seal inner ring surface is recessed, and patient's limbs are inserted, behind good position, inflation again, O-ring seal internal ring cambered surface is protruded, and with contact area less endless belt and limbs sealing, its sealing ring outer shroud is to form several sealing lines with barochamber, when treatment finishes, cushion rubber is bled, extract limbs out, carry out next therapeutic process again.

Advantage of the present utility model is as follows:

(1) because the existence of the sealing ring of O-ring seal outer shroud, forming a few sealing lines sealing pressure increases, and the pressure in a few sealing lines projection cavitys is far smaller than ambient pressure, so improved the sealing property that contacts with pressure chamber, simultaneously be cambered surface by ring in the inner and protrude and solved interior ring inflation and produce the fold problem, so also improved the sealing property that contacts with limbs.

(2) since in the cushion rubber ring be cambered surface and protrude, bleed and inflate according to the limbs of patient size is fat or thin, change the size of ring diameter in it, so enlarged the scope that different patient treatments use, reduced quantity and the cost of cushion rubber, improved curative activity efficient.

(3) the utility model is through experiment, and it is existing almost not have the gas leakage air inlet in 60 minutes Resemble, satisfy fully that leakage pressure so can seal treatment under littler pressure, more feels safe reliably the patient less than the requirement of 5KPa in 30 minutes of Medical Devices designs, the result for the treatment of of comfortable satisfaction, the while also makes operation more easy.

(4) because height of the present utility model is the 50-120 millimeter, and former cushion rubber height is 120 millimeters, so saved the raw material of making, has also increased the usage space in the sealed compartment simultaneously.

Claims

1, the inside and outside O-ring seal of a kind of positive and negative air-pressure therapy apparatus, comprise: fixedly take out inflation gas in the cushion rubber body 2 and chew 1, the assembling of cushion rubber body 2 intracavity is by fixedly forming the typing skeleton with pillar 3 between the annular backup pad 4 up and down, it is characterized in that: annular sealant circle body 2 internal ring cambered surfaces are protruded to centrage, and the sealing ring of 2 to 4 projectioies is arranged on the outer ring surface.

2, the inside and outside O-ring seal of positive and negative air-pressure therapy apparatus according to claim 1 is characterized in that: also can assemble cushion rubber lid 5 at cushion rubber body 2 one end ring shape concave sides and form the plane.

3, the inside and outside O-ring seal of positive and negative air-pressure therapy apparatus according to claim 1 is characterized in that: the triangular in shape or little circular arc of raised seals ring section on cushion rubber body 2 outer ring surfaces or apart from shape or trapezoidal or long arc shape.

4, the inside and outside O-ring seal of positive and negative air-pressure therapy apparatus according to claim 1 and 2, it is characterized in that: the height that is annulated column shape fluid sealant circle body 2 is 50～120 millimeters.