JP2016010611A - Fluid expansion type multistage cushion for dental treatment chair and dental treatment chair with fluid expansion type multistage cushion - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fluid expansion type multistage cushion for a dental treatment chair, which enables a patient short in height to reliably place his/her head in a headrest and to split gargle water and the like into a spittoon without a trouble.SOLUTION: A fluid expansion type multistage cushion 1 for a dental treatment chair, which is placed on a chair seat face of a chair body, comprises: a fluid cushion body 2 including a surface material 11, a rear face material 12, and an expandable side face material 13 connecting peripheral inner sides of the surface material and rear face material by using an inside partition member so as to partition the inside in two or more layers and forming fluid bags, being of a folding type so as to individually change thicknesses of the fluid bags in the respective layers, and having a bellows form having two or more stages; and fluid supply means 21 injecting and exhausting fluid individually with respect to the respective fluid bags. A seat face area for a patient M formed by the surface material is uniform and only thicknesses of the respective layers of a fluid cushion body are individually expanded/contracted due to individual expansion/contraction of the expandable side face material according to individual fluid injection amounts by the fluid supply means with respect to the respective fluid bags.

Description

  The present invention relates to a fluid expansion / contraction multistage cushion for a dental medical chair and a dental medical chair with a fluid expansion / contraction multistage cushion.

  When the patient is guided to the dental care unit and the patient is seated on the seat of the dental care chair to perform the dental care, the dental care chair of the dental care unit is made corresponding to the average height of a general adult, For example, in the case of a patient such as a short person having a height of 150 cm or less or a person with a physical disability, the height of the head (oral part) is lower than that of a general adult. For this reason, the back of the head does not fit correctly in the headrest of the dental clinic chair, the oral position of the patient becomes unstable, the dentist cannot perform dental treatment accurately and safely, and the position of Spitton in the dental clinic unit is As a result, there is a situation in which it is difficult for the patient to discharge gargling water into the spit.

  Also, for example, in the case of a short patient, after the backrest of the dental examination chair is turned down, the patient's body is put into the side of the patient in order to store and hold the head of the patient correctly in the headrest. There is also a complicated situation where the head is lifted and the head is placed on the headrest.

  In order to cope with such a situation, as shown in FIG. 11, an air cushion in which cushion sections whose shape (cross-sectional shape) of each section is substantially circular in a state of injecting air is provided for six sections is provided on the medical chair. Although it is one idea to place the patient on the air cushion 51 and sit on the air cushion 51 to perform dental treatment, the air cushion 51 causes the following inconvenient situation.

That is, considering the width of one section of the air cushion 51, as shown in FIG. 12, when air is not injected into the air cushion 51, the width W1 of one section can be approximated to approximately πr.
On the other hand, when air is blown into the air cushion 51, the shape becomes substantially circular in cross section and the width W2 = 2r of one section.

  Therefore, the change in the width of one section due to the presence or absence of air injection is W2 / W1 = 2r / πr = 0.64, and the width of one section is reduced to about 0.64 times by the air injection.

  As a result, the width W0 of the entire air cushion 51 is similarly reduced to approximately 0.64 times.

  If the width of the entire air cushion 51 (in this case, the length direction of the thigh of the patient) W0 changes by nearly 40% due to the presence or absence of air injection, the seat surface of the dental examination chair The sitting position of the patient does not stabilize, the height of the patient's head (oral part) is set to an appropriate position (the oral position of the patient at the time of dental treatment, and the patient can easily gargle water in the spitton. It is difficult to set the position to be able to vomit.

  In Patent Document 1, an air bag is provided on the upper surface of a backrest and a contour seat of a dental treatment chair, and the amount of air introduced into the air bag is adjusted by an operation switch that can be operated by the patient himself. An invention has been disclosed in which a bag can be used as an air cushion suitable for a patient's preference and body shape (Patent Document 1: FIG. 1 and the like).

  However, even in the case of the dental treatment chair disclosed in Patent Document 1, it can accurately correspond to individual patients having various physical characteristics such as a short person, a physically handicapped person, and an anesthetized person. It is estimated that this is difficult.

JP 2011-183046 A

  The problem to be solved by the present invention is that each head is used as a headrest for individual patients having various physical characteristics such as short people, physically handicapped people, anesthetized people, etc. There is no auxiliary equipment for a dental treatment chair that allows dentists to perform accurate and safe dental treatment in a simple and reliable manner, and that the patient can discharge gargling water etc. It is.

  The present invention is a fluid expansion / contraction type multistage cushion for a dental medical chair placed on a chair seat surface of a chair body, and connects a surface material, a back material, and peripheral portions of the surface material and the back material. A multi-stage fluid cushion main body having a fluid bag structure inside, and a fluid cushion main body having a telescopic side material that can be expanded and contracted so as to change a thickness between the front surface material and the back surface material. Fluid supply control means for injecting and exhausting fluid, and the amount of fluid injected by the fluid supply control means to the fluid cushion body while the seat surface area for the patient formed by the surface material or the back surface material is constant The main feature is that only the thickness of the multi-stage fluid cushion body is expanded and contracted by expansion and contraction of the expandable side member according to the above.

  According to the first aspect of the present invention, even a patient having different physical characteristics such as being shorter than a general adult can stably maintain a sitting position. Since the head is properly stored and held in the headrest, it is possible to receive dental care with peace of mind. It is possible to provide a fluid expansion / contraction type multistage cushion for a dental examination chair capable of accurately and safely carrying out dental treatment of the patient concerned.

  According to the second aspect of the present invention, the fluid bag main body has a fluid bag structure of at least two layers of polymerization and the thickness of the fluid bag of each layer can be individually adjusted. As in the case of the first aspect of the invention, it is possible to maintain a stable sitting position even in patients with different physical characteristics such as being shorter than a general adult. Therefore, the head is guided to an appropriate position that does not hinder the discharge of gargle water to Spitton, and the head is correctly stored and held in the headrest, so that it is possible to receive dental treatment with peace of mind. The dentist can provide a fluid expansion / contraction type multi-stage cushion for a dental examination chair capable of accurately and safely performing dental examination of the patient for such a patient.

  According to the invention described in claim 3, in the invention described in claim 2, in each fluid bag of at least two-layer polymerization or more, a plurality of parallel arrangements each having a predetermined interval and intersecting each other vertically adjacent layers. Since the foldable reinforcing elastic material that extends and contracts in the thickness direction according to the amount of fluid injected is provided, the same effect as the invention of claim 2 can be obtained and the fluid cushion body can be acted on. It is possible to provide a fluid expansion / contraction type multistage cushion for a dental examination chair that can increase the rigidity of the fluid cushion main body itself with respect to the weight of the patient to be treated.

  According to the fourth aspect of the present invention, the effects of the second or third aspect of the present invention can be obtained, and individual fluid supply and individual fluid exhaust to the fluid bags of at least two layers in the fluid cushion body can be ensured. It is possible to provide a fluid expansion / contraction-type multistage cushion for a dental examination chair that can be accurately adjusted according to various patients.

  According to the invention described in claim 5, in the case of the invention described in claim 1, based on a configuration in which the back material is integrated with the seat surface of the chair body of the dental examination chair and the fluid expansion / contraction multistage cushion is integrated in advance. As with, it is possible to maintain a stable sitting position even in patients with different physical characteristics, such as being short compared to normal adults, so there is no hindrance to irrigation of spout water to the head Since it is guided to the proper position and the head is correctly stored and held in the headrest, it is possible to receive dental care with peace of mind, and the dentist can accurately and safely handle such patients. It is possible to provide a dental examination chair with a fluid expansion / contraction type multistage cushion capable of performing dental examination.

  According to the sixth aspect of the present invention, the back surface material is integrated with the seat surface of the chair body of the dental examination chair, and the fluid expansion / contraction type multistage cushion is integrally provided in advance, and the fluid cushion body includes at least two fluid layers. Provided is a dental medical chair with a fluid expansion / contraction type multistage cushion which has the same effect as that of the invention according to claim 5 based on a structure in which a bag structure is used and the thickness of the fluid bag of each layer can be adjusted individually. be able to.

  According to the seventh aspect of the present invention, the fluid cushion main body itself has the same effect as that of the sixth aspect of the invention, and the body weight of the fluid cushion main body with respect to the weight of the patient acting on the fluid cushion main body by the foldable reinforcing elastic material provided in the interior. It is possible to provide a dental examination chair with a fluid expansion / contraction type multistage cushion capable of increasing rigidity.

  According to the invention described in claim 8, the effects of the invention described in claim 6 or 7 can be obtained, and the individual fluid supply and the individual fluid exhaust to the fluid bags of at least two layers in the fluid cushion body can be ensured. It is possible to provide a dental medical chair with a fluid expansion / contraction type multistage cushion capable of accurately adjusting the thickness of the fluid cushion body according to various patients.

FIG. 1 is a schematic overall configuration diagram of an air cushion main body as an example of a fluid cushion main body of a fluid expansion / contraction type multistage cushion for a dental examination chair according to a first embodiment of the present invention and an air supply control means as an example of a fluid supply control means. It is. FIG. 2 is a schematic side view showing a state in which the air cushion main body of the fluid expansion / contraction type multistage cushion for the dental practice chair according to the first embodiment is installed on the seat surface of the dental practice chair. FIG. 3 is a partial enlarged cross-sectional view of the air cushion body of the fluid expansion / contraction type multistage cushion for the dental examination chair according to the first embodiment. FIG. 4 is a diagram showing a reinforced elastic material that is installed in an intersecting arrangement in each layer in the upper air bag portion, middle air bag portion, and lower air bag portion in the air cushion body of the fluid expansion / contraction type multistage cushion for dental practice chair according to the first embodiment. It is a schematic partial explanatory drawing which shows arrangement | positioning of a depth direction. FIG. 5 is a diagram showing a reinforced elastic material that is arranged in an intersecting arrangement in each of the upper air bag portion, middle air bag portion, and lower air bag portion in the air cushion main body of the fluid expansion / contraction type multistage cushion for dental examination chair according to the first embodiment. It is a schematic partial explanatory drawing which shows arrangement | positioning of the width direction. FIG. 6 is an explanatory view showing a stretched state in the thickness direction according to the air amount of the reinforcing stretchable material according to the first embodiment. FIG. 7 is a schematic diagram illustrating a configuration example of an air supply / exhaust controller of the air supply control unit according to the first embodiment. FIG. 8 is a schematic explanatory view showing a patient's sitting position adjustment state depending on whether or not the air cushion main body of the fluid expansion / contraction type multistage cushion for the dental practice chair according to the first embodiment is installed on the seat surface of the dental practice chair. . FIG. 9 is a schematic explanatory view showing a stretched state in the thickness direction according to the air amount of the air cushion main body in the fluid expansion / contraction type multistage cushion for the dental examination chair according to the first embodiment. FIG. 10 is a schematic side view for a dental medical chair with a fluid expansion / contraction type multistage cushion according to Embodiment 2 of the present invention. FIG. 12 is a schematic perspective view of a conventional air cushion. FIG. 12 is a comparative explanatory view of whether or not air is injected in the width dimension of one section in a conventional air cushion.

  The present invention allows each head to be simply and securely stored in a headrest for individual patients having various physical characteristics such as short persons, physically handicapped persons, anesthetized persons, etc. The purpose of the chair body chair is to provide a fluid expansion / contraction type multi-stage cushion for a dental examination chair that enables a doctor to perform accurate and safe dental treatment and the patient can spout gargle water etc. without any trouble. A fluid expansion / contraction type multistage cushion for a dental medical chair placed on a seating surface, comprising a front surface material, a back surface material, and a single or a plurality of partitioning materials between the inner surfaces of the front surface material and the back surface material Is used to divide the interior into at least two layers to form a fluid bag of at least two-layer polymerization, and is a foldable multi-stage bellows so that the thickness of the fluid bag of each layer can be individually changed A telescopic side material in the form A fluid cushion main body and fluid supply control means for individually injecting and exhausting fluid to each fluid bag of the fluid cushion main body, and the patient seat surface area formed by the surface material or the back material is constant. However, only the thickness of each layer of the fluid cushion body is individually inflated by the individual expansion and contraction of the multi-stage telescopic side members according to the individual fluid injection amount by the fluid supply control means for each fluid bag of the fluid cushion body. This was realized by the configuration to shrink.

  Hereinafter, a fluid expansion / contraction type multistage cushion for a dental examination chair and a dental examination chair with a fluid expansion / contraction type multistage cushion according to an embodiment of the present invention will be described in detail with reference to the drawings.

  Example 1 of the present invention shows a case where air is used as an example of a fluid as an example of a fluid expansion / contraction type multistage cushion for a dental practice chair, and an air expansion / contraction type multistage cushion 1 for a dental practice chair is used. Details will be described with reference to FIGS.

  An air expansion / contraction type multistage cushion 1 for a dental practice chair, which is an example of a fluid expansion / contraction type multistage cushion for a dental practice chair according to the first embodiment, includes a surface material 11, a back material 12, the surface material 11, and a back material. The peripheral side members 13 are connected to each other around the entire circumference, and are foldable in a bellows shape and extendable in the height direction so as to change the thickness between the surface material 11 and the back material 12. And an air cushion body 2 that is an example of a fluid cushion body that has an air bag structure that is a fluid bag structure inside, and injecting air that is fluid to the air cushion body 2 and exhausting air that is fluid. Air supply control means 21 as an example of the fluid supply control means to perform, and the air cushion main body 2 is a contour of the chair main body of the dental examination chair 3 as shown in FIG. For example, a sitting position including a head of a short patient M such as a child who sits on the air cushion body 2 on which the contour seat 4 is placed is placed on the seat surface of the seat 4 by the air supplied from the air supply control means 21. The thickness of the air cushion body 2 can be adjusted to be high or low by the expansion / contraction of the air cushion body 2.

  The air cushion body 2 is formed to have a square shape in plan view, for example, with the width of the front material 11 and the back material 12 both set to 480 cm and the depth to 480 cm.

  Further, the front surface material 11, the back surface material 12, and the telescopic side material 13 all have a double structure in which the surface material is, for example, a cloth material and the back material is a synthetic resin material. The joining portion of the side member 13 is closely bonded by welding or the like, and an air bag structure is formed in which the air that enters the inside does not leak to the outside.

  As shown in FIG. 2, the chair body of the dental examination chair 3 includes a contour seat 4, a backrest 5, a headrest 6, and the like, and the contour seat 4 can be tilted in conjunction with the backward tilting operation of the backrest 5. The contour seat 4, the backrest 5, and the headrest 6 as a whole can be moved up and down by a lifting mechanism (not shown) provided in the base 7.

  The air cushion body 2 will be further described in detail with reference to FIGS.

  As described above, the air cushion main body 2 includes the front surface material 11, the back surface material 12, and the telescopic side material 13, and further includes three levels of the telescopic side material 13 as shown in FIG. A folding type is used, and the first and second tiers and the second and third tiers are partitioned by a first partition member 14 and a second partition member 15 each made of a synthetic resin sheet or the like. In addition, the upper air bag portion 16a and the middle air bag are joined by tightly joining the peripheral portions of the first partition material 14 and the second partition material 15 and the joint portions of the expandable side members 13 by welding or the like. A three-layer air bag structure including a portion 16b and a lower air bag portion 16c is employed.

  As shown in FIGS. 4 and 5, the air cushion body 2 is made of, for example, a synthetic resin material, and has a Σ-shaped cross section and has a lower surface and a lower surface of the upper piece 17 a according to the amount of air (air pressure level). While being deformed in the thickness direction by the action of air pressure acting on the upper surface of the piece 17b, a large number of reinforcing elastic members 17 having a length of, for example, about 400 mm are arranged in a row.

  That is, as shown in FIGS. 4 and 5, in the upper air bag portion 16a, a plurality of reinforcing elastic members 17 are arranged in a row along the width direction with a certain interval in the depth direction, and the middle layer In the air bag portion 16b, a large number of reinforcing elastic members 17 are arranged in the depth direction with a certain interval in the width direction. Further, the lower air bag portion 16c is the same as in the upper air bag portion 16a. A large number of reinforcing elastic members 17 are arranged along the width direction with a certain interval in the depth direction.

  As described above, the reinforcing elastic material 17 in the upper air bag portion 16a and the reinforcing elastic material 17 in the middle air bag portion 16b are arranged to intersect each other by 90 degrees, and the reinforcing elastic material 17 in the middle air bag portion 16b and Arrangement form in which the reinforcing elastic members 17 in the upper air bag portion 16a, the middle air bag portion 16b, and the lower air bag portion 16c alternately intersect with the reinforcing elastic material 17 in the lower air bag portion 16c. It is said.

  When the patient M sits on the air cushion body 2, the reinforcing elastic member 17 reinforces the rigidity in the thickness direction of the air cushion body 2 under the action of air pressure as shown in FIG. Function.

  Next, with reference to FIG. 1 and FIG. 7, the air supply control means 21 of the air expansion / contraction type multistage cushion 1 for dental treatment chairs will be described in detail.

  As shown in FIG. 1, the air supply control means 21 includes a connection plug 20 connected to an air supply source of a dental care unit (not shown), a check valve 22 connected to the connection plug 20, and a check valve 22. A connected air regulator 23, a pressure gauge 24 for measuring the pressure of air from the air regulator 23, a filter 25 connected to the air regulator 23, and an exhaust valve 26 for discharging or stopping discharge of exhaust air from the filter 25; An electric flow rate adjusting valve 27 connected to the filter 25 for adjusting the flow rate of the air supplied to the air cushion main body 2, and connected to the electric flow rate adjusting valve 27. An electric three-way valve 28 for switching between supply of air and discharge of exhaust air from the air cushion body 2 to the outside, The upper layer solenoid valve 29a, the middle layer solenoid valve 29b and the lower layer solenoid valve 29c connected between the direction valve 28 and the air cushion body 2, the electric flow control valve 27, the electric three-way valve 28, and the upper layer solenoid valve 29a. And an air supply / exhaust controller 30 for controlling the operation of the middle layer solenoid valve 29b and the lower layer solenoid valve 29c.

  The upper layer solenoid valve 29a, the middle layer solenoid valve 29b, and the lower layer solenoid valve 29c are each supplied with air from the electric flow control valve 27 via the electric three-way valve 28, and the supplied air is supplied to these upper layers. Solenoid valve 29a, middle layer solenoid valve 29b, and lower layer solenoid valve 29c through three air pipes 31a, 31b, 31c, three supply plugs 32a, 32b, 32c, the upper layer air bag portion 16a, the middle layer air bag It supplies so that it may each supply in the part 16b and the lower layer air bag part 16c.

  Further, when air is exhausted from the upper air bag portion 16a, the middle air bag portion 16b, and the lower air bag portion 16c, three from the three supply plugs 32a, 32b, 32c, contrary to the case described above. The upper-layer solenoid valve 29a, the middle-layer solenoid valve 29b, and the lower-layer solenoid valve 29c are passed through the air pipes 31a, 31b, and 31c, and the electric three-way valve 28 is further evacuated to the outside.

  FIG. 7 shows a schematic configuration example of the air supply / exhaust controller 30. The flow rate adjustment dial 33 that adjusts the amount of air passing through the electric flow rate adjustment valve 27 and the electric three-way valve 28 are in an intake state or A three-way valve switch 34 for switching to the exhaust state, and an upper layer solenoid valve switch 35a, a middle layer solenoid valve switch 35b, and a lower layer solenoid for individually opening and closing the upper layer solenoid valve 29a, the middle layer solenoid valve 29b, and the lower layer solenoid valve 29c. And a solenoid valve switch 35c.

  Next, a usage example of the air expansion / contraction type multistage cushion 1 for a dental examination chair according to the first embodiment will be described mainly with reference to FIGS. 1, 2, 8, and 9.

  When a patient M such as a short child is seated on the seat surface of the contour seat 4 without placing the air cushion body 2 on the contour seat 4 of the dental examination chair 3, the right column in FIG. As shown, the head of this patient M does not fit properly in the headrest 6, so that the position of the spitton 36 is relatively higher than the position of the oral cavity of the patient M, so that the patient M gargles water. It becomes difficult to vomit into Spitton.

  In the first embodiment, as shown in the left column of FIG. 8, the air cushion body 2 is placed on the contour sheet 4 of the dental examination chair 3, and the seat surface formed by the surface material 11 of the air cushion body 2 is used. A patient M such as a short child is seated and the air supply control means 21 configured as described above is operated to supply an appropriate amount of air into the air cushion body 2. As shown in FIG. 9, the overall thickness is adjusted to be high and low so that the head of the patient M fits properly on the headrest 6.

  As a result, the patient M is surely placed in the headrest 6 and is in a relatively appropriate state with respect to the position of the oral cavity of the patient M and the position of the spitton 36, so that the patient M has no trouble in the spitwater 36. It becomes possible to vomit without.

  Further, the air cushion main body 2 has an area of the seating surface of the surface material 11 only when the stretchable side member 13 expands and contracts in the thickness direction even when the thickness thereof changes as shown in FIG. No change is made, and it is possible to maintain the state in which the patient M is reliably seated in the above-described proper position.

  In the air expansion / contraction type multistage cushion 1 for a dental practice chair according to the first embodiment, the entire outer periphery of each of the intermediate portions of the surface material 11, the back material 12, and the telescopic side material 13 of the air cushion body 2 is surrounded. Although not shown in the figure, the air cushion main body 2 is used with a string or the like by projecting each of the rectangular peripheral projecting pieces, providing a small hole part for inserting a string or the like into the square protrusion, and inserting the string or the like into the small hole part. Then, it can be tied to the contour seat 4 so as not to be detached, or when the air cushion body 2 is folded, the outer periphery is tied using a string or the like to facilitate storage.

  According to the air expansion / contraction type multistage cushion 1 for a dental examination chair according to the first embodiment described above, dental treatment can be performed with peace of mind even in various patients M having different physical characteristics such as being shorter than a general adult. In addition, the dentist can perform dental treatment of the patient accurately and safely with respect to such a patient.

  In the air expansion / contraction type multistage cushion 1 for a dental examination chair according to the first embodiment described above, the air bag in the air cushion main body 2 has a three-layer overlapping structure, and the expandable side member 13 has a three-stage folding structure. In addition to the above, the air bag in the air cushion body 2 has a two-layer superposed structure, and the expandable side member 13 has a two-stage folding structure, and the air cushion body. It is of course possible to construct an air expansion / contraction type multi-stage cushion in which the air bag in 2 has a four-layer superposition structure and the expandable side member 13 has a four-stage folding structure. The number of folding steps of the telescopic side member 13 is not particularly limited.

  In the above description of the first embodiment, the air expansion / contraction type multistage cushion 1 for a dental practice chair, which is an example of a fluid expansion / contraction type multistage cushion for a dental practice chair, has been described. It is not limited to the air expansion / contraction type multistage cushion 1 for dental treatment chairs of a structure.

  That is, in addition to the air expansion / contraction multi-stage cushion 1 as described above, the air expansion / contraction type multi-stage cushion 1 has the same configuration as that of the air expansion / contraction type multi-stage cushion 1, and the fluid cushion main body is replaced with air instead of air. A gas expansion / contraction type multi-stage cushion configured to inject or exhaust any one of nitrogen, helium, carbon dioxide, argon gas, or the like, or a configuration similar to the air expansion / contraction type multi-stage cushion 1 In addition, it is also possible to provide a liquid expansion / contraction type multistage cushion configured to inject or drain any liquid of water, oil, solution, etc. with respect to the fluid cushion main body. Even when the fluid cushion main body structure of the contraction type multistage cushion or the liquid expansion / contraction type multistage cushion is adopted, it is the same as the case of the air expansion / contraction type multistage cushion 1 of the first embodiment. Use, can be effective.

  In the case of the above-described gas expansion / contraction type multistage cushion and liquid expansion / contraction type multistage cushion, the number of layers of the fluid bag in the fluid cushion body and the number of folding stages of the extendable side members are not particularly limited. This is the same as described above.

  Next, a dental examination chair 3A with an air expansion / contraction type multistage cushion 1 according to Embodiment 2 of the present invention will be described with reference to FIG.

  In the dental medical chair 3A shown in FIG. 10, the back material 12 of the air cushion main body 2 in the air expansion / contraction type multi-stage cushion 1 is integrated with the seating surface of the contour seat 4 by, for example, wearing or the like to form a dental medical chair 3A. Although not shown in the figure, the configuration and operational effects of the other air supply control means 21 and the like are the same as those in the first embodiment.

  According to the dental examination chair 3A with the air expansion / contraction type multistage cushion 1 according to the second embodiment, the air expansion / contraction type multistage cushion 1 similar to the case of the first embodiment integrated in advance with the seat surface of the contour seat 4 is provided. As in the case shown in FIG. 8, the head of the short patient M is securely stored in the headrest 6 and the position of the oral cavity of the patient M and the position of the spitons 36 are relatively appropriate. As a condition, the patient M can realize a state in which gargle water can be discharged into the spitn 36 without any trouble, and as described above, the patient M has different physical characteristics such as being shorter than a general adult. A variety of patients M can receive dental care with peace of mind, and a dentist can accurately and safely carry out dental care for such patients.

  Even in the case of the dental examination chair 3A with the air expansion / contraction type multistage cushion 1 according to the second embodiment, the number of layers of the air bag in the air cushion body 2 and the number of steps of folding the telescopic side member 13 are not particularly limited. This is the same as in the first embodiment. In the case of the second embodiment, it is needless to say that the fluid cushion main body structure of the gas expansion / contraction type multistage cushion or the liquid expansion / contraction type multistage cushion described above can be adopted.

  The present invention relates to dentistry such as patients with a low head height and a height of 150 cm or less (design standard height minimum), women and children, anesthetized patients, patients with disabilities such as paralysis committee, etc. It can be suitably applied to medical care.

1 Air expansion / contraction multistage cushion (fluid expansion / contraction multistage cushion)
2 Air cushion body (fluid cushion body)
DESCRIPTION OF SYMBOLS 3 Dental examination chair 3A Dental examination chair 4 Contour sheet 5 Backrest 6 Headrest 7 Base 11 Surface material 12 Back surface material 13 Retractable side material 14 1st partition material 15 2nd partition material 16a Upper air bag part 16b Middle air Bag portion 16c Lower air bag portion 17 Reinforced elastic material 17a Upper piece 17b Lower piece 20 Connecting plug 21 Air supply control means (fluid supply control means)
22 Check Valve 23 Air Regulator 24 Pressure Gauge 25 Filter 26 Exhaust Valve 27 Electric Flow Control Valve 28 Electric Three-way Valve 29a Solenoid Valve for Upper Layer 29b Solenoid Valve for Middle Layer 29c Solenoid Valve for Lower Layer 30 Supply / Exhaust Controller 31a Air Pipe 31b Air Pipe 31c Air pipe 32a Supply plug 32b Supply plug 32c Supply plug 33 Flow rate adjustment dial 34 Three-way valve selector switch 35a Solenoid valve switch for upper layer 35b Solenoid valve switch for middle layer 35c Solenoid valve switch for lower layer 36 Spitton M Patient

Claims (8)

A fluid expansion / contraction type multistage cushion for a dental practice chair placed on a chair seat surface of a chair body,
It comprises a surface material, a back surface material, and a telescopic side material that connects the peripheral portions of the surface material and the back material, and that can be expanded and contracted to change the thickness between the surface material and the back material. A multistage fluid cushion body with a fluid bag structure inside;
Fluid supply control means for injecting and exhausting fluid to the fluid cushion body;
Have
A multi-stage fluid cushion main body by expanding and contracting the telescopic side material according to the amount of fluid injected by the fluid supply control means to the fluid cushion main body while keeping the seating surface area for the patient formed by the surface material or the back surface material constant A fluid expansion / contraction type multistage cushion for a dental examination chair, characterized in that only the thickness of the dental treatment chair is expanded and contracted. A fluid expansion / contraction type multistage cushion for a dental practice chair placed on a chair seat surface of a chair body,
At least two-layer polymerization is performed by connecting a front material, a back material, and inner surfaces of the front material and the back material with a single or a plurality of dividers so that the inside is divided into at least two layers. A fluid cushion body comprising the above-described fluid bag, and a multi-stage bellows-type stretchable side member that is foldable so that the thickness of the fluid bag of each layer can be individually changed;
Fluid supply control means for individually injecting and exhausting fluid to each fluid bag of the fluid cushion body;
Have
Individual multi-stage telescopic side members according to the amount of individual fluid injected by the fluid supply control means for each fluid bag of the fluid cushion body while keeping the seating area for the patient formed by the surface material or the back material constant A fluid expansion / contraction type multistage cushion for a dental examination chair, characterized in that only the thickness of each layer of the fluid cushion body is individually expanded and contracted by stretching and contracting.   In each fluid bag of at least two-layer polymerization or more, a plurality of parallel arrangements each having a predetermined interval and crossing arrangements in adjacent layers above and below, and expansion and contraction in the thickness direction according to the amount of fluid injected 3. A fluid expansion / contraction type multistage cushion for a dental examination chair according to claim 2, further comprising a foldable reinforcing elastic material.   The fluid supply control means is connected to an electric flow rate adjusting valve for adjusting the flow rate of the fluid supplied to the fluid cushion main body, and an electric flow rate adjusting valve, and supplies the fluid from the electric flow rate adjusting valve to each layer in the fluid cushion main body. And an electric three-way valve that switches between discharge of fluid exhaust from each layer in the fluid cushion body, each solenoid valve connected between the electric three-way valve and each layer in the fluid cushion body, and the electric flow control valve, The fluid expansion / contraction type multistage cushion for a dental examination chair according to claim 2 or 3, further comprising an electric three-way valve and a supply / exhaust controller for controlling the operation of each solenoid valve. A dental medical chair with a fluid expansion / contraction type multistage cushion in which a fluid expansion / contraction type multistage cushion is integrally arranged on the seat surface of the chair body,
The fluid expansion / contraction multi-stage cushion arranged integrally on the seat surface of the chair body is,
The patient's seating surface material, the back material integrated with the seat surface of the chair body, and the peripheral portions of the surface material and the back material are connected to each other, and the thickness between the surface material and the back material is changed. A multi-stage fluid cushion body having a fluid bag structure inside,
Fluid supply control means for injecting and exhausting fluid to the fluid cushion body;
Have
The thickness of the multi-stage fluid cushion body by the expansion and contraction of the extendable side member according to the amount of fluid injected by the fluid supply control means to the fluid cushion body while keeping the patient seat surface area formed by the surface material constant A dental treatment chair with a fluid expansion / contraction type multi-stage cushion, characterized in that it is configured to expand and contract only. A dental medical chair with a fluid expansion / contraction type multistage cushion in which a fluid expansion / contraction type multistage cushion is integrally arranged on the seat surface of the chair body,
The fluid expansion / contraction multi-stage cushion arranged integrally on the seat surface of the chair body is,
At least two layers of the interior material using a single or a plurality of partitioning materials for the patient seating surface material, the back material integrated with the seating surface of the chair body, and the inner surfaces of the surface material and the back material. A multi-stage bellows-type telescopic side member that is connected so as to be partitioned as described above, forms a fluid bag of at least two-layer polymerization, and is foldable so that the thickness of the fluid bag of each layer can be individually changed; A fluid cushion body comprising:
Fluid supply control means for individually injecting and exhausting fluid to each fluid bag of the fluid cushion body;
Have
Individual multi-stage telescopic side members according to the amount of individual fluid injected by the fluid supply control means for each fluid bag of the fluid cushion body while keeping the seating area for the patient formed by the surface material or the back material constant A fluid expansion / contraction type multistage cushion for a dental examination chair, characterized in that only the thickness of each layer of the fluid cushion main body is individually expanded and contracted by stretching and contracting. In each fluid bag of at least two-layer polymerization or more, a plurality of parallel arrangements each having a predetermined interval and crossing arrangements in adjacent layers above and below, and expansion and contraction in the thickness direction according to the amount of fluid injected 7. A dental medical chair with a fluid expansion / contraction type multistage cushion according to claim 6, further comprising a foldable reinforcing elastic material.   The fluid supply control means is connected to an electric flow rate adjusting valve for adjusting the flow rate of the fluid supplied to the fluid cushion main body, and an electric flow rate adjusting valve, and supplies the fluid from the electric flow rate adjusting valve to each layer in the fluid cushion main body. And an electric three-way valve that switches between discharge of fluid exhaust from each layer in the fluid cushion body, each solenoid valve connected between the electric three-way valve and each layer in the fluid cushion body, and the electric flow control valve, The dental medical chair with a fluid expansion / contraction type multistage cushion according to claim 6, further comprising an electric three-way valve and a supply / exhaust controller for controlling operation of each solenoid valve.

Images