CN111297621B

CN111297621B - Seat capable of automatically spraying and administering medicine

Info

Publication number: CN111297621B
Application number: CN202010132260.XA
Authority: CN
Inventors: 臧红霞; 田进军; 迟正; 张琳
Original assignee: Weihai Maternal And Child Health Care Hospital Weihai Second Municipal Hospital Weihai Women's And Children's Hospital
Current assignee: Weihai Maternal And Child Health Care Hospital Weihai Second Municipal Hospital Weihai Women's And Children's Hospital
Priority date: 2018-09-30
Filing date: 2018-09-30
Publication date: 2021-10-01
Anticipated expiration: 2038-09-30
Also published as: CN109363840A; CN109363840B; CN111228050A; CN111297621A

Abstract

The invention discloses a seat capable of automatically spraying and dosing, which belongs to the field of medical instruments and is characterized in that: comprises a seat body and an administration assembly; the seat body comprises a seat, armrests, a backrest and a headrest; the drug delivery assembly comprises a drug delivery device, a control box, a hand brake, a drug storage tank and a time delay valve; the headrest is positioned above the backrest; the main body of the medicine feeder is an n-shaped rod-shaped or hollow tubular structure, and the time delay valve and the lower end of the medicine feeder are positioned in the control box; the time delay valve comprises a cylinder body, a first piston, a second spring, a one-way valve and a linkage valve. Compared with the prior art have the characteristics that can be used medicine to sick patient automatically.

Description

Seat capable of automatically spraying and administering medicine

Technical Field

The invention discloses a divisional application of a patent application of a chair special for old and weak patients (application number: 2018111548535), and relates to furniture, in particular to a chair special for old and weak patients, which can automatically administer medicine.

Background

With the increase of the aging degree of the society, the number of empty nesters is increased, and the empty nesters become a social problem which cannot be ignored. Empty nesters often do not have children or companions at home, weak and sick old people can hire 24-hour nursing under good economic condition, but old and weak patients with poor economic condition can only hire timekeeper to clean and cook, and other times need self-care. The patients often have no medicine, the daily medicine is an oral preparation and an external preparation, and the respiratory tract administration of the external preparation avoids gastrointestinal digestion and liver metabolism, so the preparation becomes a new pharmacy field with broad prospect, and is particularly suitable for the old and the weak patients with gastrointestinal weakness and or accompanied liver function reduction. With the deepening of clinical research, the spray of the oral-nasal administration route has no contraindication to cardiovascular patients because of no propellant, and gradually occupies more parts clinically, and nasal administration systems of medicines such as calcitonin and the like are already on the market; several pulmonary, oral or nasal delivery systems for insulin have entered the clinical study. Meanwhile, due to the rapid development of the biopharmaceutical industry, the nasal spray can be used for some biotechnological medicines with low oral bioavailability, such as polypeptides, proteins and nucleic acid medicines, or can be an important way for local or systemic administration of the medicines.

Although the spray of the oronasal administration route has the advantages of no gastrointestinal irritation and no liver function damage, the spray can not be directed to the mouth and the nose of partial old and weak patients, such as patients with scapulohumeral periarthritis, limb weakness or flaccid paralysis; patients with paralysis agitans are unable to maintain stable alignment; the patient with muscle strength decline can not press the manual pump to spray the liquid medicine into mist. The defects limit the self-administration of the old and the weak patients.

Disclosure of Invention

The technical task of the present invention is to provide a chair capable of automatic spray administration, which is aimed at the defects of the prior art.

The technical scheme for solving the technical problem is as follows: a chair capable of automatic spray administration, characterized by: comprises a seat body and an administration assembly; the seat body comprises a seat, armrests, a backrest and a headrest; the drug delivery assembly comprises a drug delivery device, a control box, a hand brake, a drug storage tank, a first three-way valve, a second three-way valve and a delay valve; the headrest is positioned above the backrest, the lower end of the headrest is hinged with the upper end of the backrest, a torsion spring is arranged at the hinged position, and forward acting force is applied to the headrest through the elastic action of the torsion spring; the left side and the right side of the front side of the headrest are respectively provided with a side stop, the side stops are hinged with the headrest, the hinged positions are provided with torsional springs, and the acting force of the torsional springs is used for giving the acting force of the headrest deflecting towards the middle direction; the medicine feeder main body is of an n-shaped rod-shaped or hollow tubular structure, and two ends of the medicine feeder are respectively positioned at the positions behind two sides of the headrest; the middle position and the left and right sides of the medicine feeder are respectively provided with a group of atomizing nozzles, and the liquid medicine is atomized and then sprayed to the mouth and nose of a patient under the action of the atomizing nozzles; the control box is positioned at the rear part of the headrest, and the lower ends of the delay valve and the medicine feeder are positioned in the control box; the rear side of the lower end of the headrest is provided with an arc-shaped rack, and the arc circle center of the arc-shaped rack is positioned at the hinge point of the headrest; a gear meshed with the arc-shaped rack is arranged behind the arc-shaped rack; the gear is of a hollow structure, and the side wall of the inner cavity is provided with a ratchet to form an inner ratchet structure; the position on the medicine feeder, which is close to the lower end, is fixedly connected with a horizontal shaft, and the horizontal shaft penetrates through the gear; a pawl matched with the inner ratchet wheel is arranged on the horizontal shaft to jointly form an inner meshing ratchet wheel mechanism; the inner gearing ratchet mechanism enables the horizontal shaft and the gear to rotate only in one direction, and the direction of the ratchet on the ratchet wheel meets the requirement that when the medicine feeder rotates backwards, the pawl can clamp the ratchet wheel and drive the gear to rotate; the horizontal shaft is arranged at the front end of the horizontal rod; the middle rear part of the horizontal rod is positioned in the cylinder body; the cylinder body is fixedly arranged on the control box, a hole is formed in the middle of the cylinder body, the middle rear part of the horizontal rod is positioned in the hole of the cylinder body, a first spring is sleeved on the horizontal rod, and the horizontal rod is pushed forwards under the action of the first spring; a hand brake is arranged below the outer side of the seat armrest and is connected with a brake line; the other end of the brake cable is positioned at the rear end of the cylinder body, the brake cable sheath is blocked at the rear end of the cylinder body hole, and the core wire end of the brake cable is fixed at the rear end of the horizontal rod; the medicine storage tank is used for storing medicine liquid, compressed air is injected into the medicine storage tank, and the compressed air provides power for the medicine to be sprayed out; the medicine storage tank is connected with a delay valve through a medicine pipe, and the delay valve comprises a cylinder body, a first piston, a second spring, a one-way valve and a linkage valve; the cylinder body is of a hollow structure with openings at the front end and the rear end, a partition plate is arranged in the middle of the cylinder body, and the cylinder body is divided into a front cavity and a rear cavity, namely a front cavity and a rear cavity, by the partition plate; the first piston and the second piston are respectively positioned in the front cavity and the rear cavity, a first piston rod is fixedly arranged on the front side surface of the first piston, and the front end of the first piston rod extends out of the cylinder body and is propped against the lower end of the medicine feeder; a second spring is arranged between the first piston and the partition plate, and the first piston is pushed forwards under the action of the second spring; the clapboard is respectively provided with a check valve and a pore; the one-way valve is connected with the front cavity and the rear cavity on the cylinder body, air in the rear cavity can rapidly flow into the front cavity in a one-way mode under the action of the one-way valve, and air in the front cavity cannot flow into the rear cavity from the one-way valve; a second piston rod is fixedly arranged on the rear side surface of the second piston, and the rear end of the second piston rod extends out of the cylinder body; the rear end of the second piston rod is connected with the linkage valve; a first three-way valve and a second three-way valve are respectively arranged behind the side baffles on the two sides; the three-way valves respectively comprise an inlet and two outlets, a valve core for controlling the communication relationship between the openings and a valve rod for controlling the movement of the valve core are arranged in the three-way valves, the valve rod extends out of the three-way valves, when the side block deflects under the action of the head, the side block can push the valve rod to move, and after the side block is reset, the valve rod and the valve core are reset along with the side block; the first three-way valve comprises a medicine inlet a and medicine outlets b and c, and the second three-way valve comprises a medicine inlet d and medicine outlets e and f; when the side block deflects to press down the corresponding valve rod, the port a is communicated with the port b, and the port d is communicated with the port e; the medicine outlet of the medicine storage tank is connected with the medicine inlet of the delay valve through a medicine pipe, the medicine outlet of the delay valve is connected with a three-way valve a port through the medicine pipe, a three-way valve c port is connected with a three-way valve d port, a three-way valve f port is connected with an atomizing nozzle at the middle position on the medicine feeder, and a three-way valve b port and a three-way valve e port are respectively connected with the atomizing nozzle on one side of the three-way valve on the medicine feeder.

Compared with the prior art, the invention has the following outstanding beneficial effects:

1. for patients with limb disabilities, weakness, paralysis agitans and the like, the administration of the medicine can be controlled by changing the head position of the patient in a waking state without nursing by other people;

2. for patients with spontaneous coma or epilepsy, the head position is changed to trigger automatic administration (the type of the built-in first-aid medicine can be preset according to the existing medical history of the patients), so that the patients are wakened in time to be rescued in time, and the rescue time is saved;

3. can be improved according to the prior chair, has low cost and is disposable.

Drawings

Fig. 1 is a schematic structural view of embodiment 1 of the present invention.

Fig. 2 is a schematic structural view of the interior of the control box and the headrest and drug delivery device.

Fig. 3 is a schematic diagram of a time-delay valve structure.

Fig. 4 is a schematic structural diagram of embodiment 2 of the present invention.

Fig. 5 is a connection relationship diagram of the delay valve and the three-way valve in embodiment 2 of the invention.

Fig. 6 is a schematic structural diagram of embodiment 4 of the present invention.

Detailed Description

The invention is further described with reference to the drawings and the detailed description.

In example 1, as shown in fig. 1 to 3, the present invention includes a seat body and an administration assembly. The seat body comprises a seat 8, armrests 9, a backrest 5 and a headrest 3. The administration assembly comprises a medicine feeder 2, a control box 4, a hand brake 7, a medicine storage tank 31 and a time delay valve 20.

The headrest 3 is positioned above the backrest 5, the lower end of the headrest 3 is hinged with the upper end of the backrest 5, a torsion spring is arranged at the hinged position, and forward acting force is applied to the headrest 3 under the elastic action of the torsion spring. When the head of the patient leans against the headrest 3, the headrest 3 can deflect backwards by a certain angle, and after the head of the patient leaves the headrest 3, the headrest 3 resets under the action of the torsion spring.

The main body of the medicine feeder 2 is of an n-shaped rod-shaped or hollow tubular structure, and two ends of the medicine feeder 2 are respectively positioned at the positions behind two sides of the headrest 3. The medicine feeder 2 is provided with an atomizing nozzle 1, and the liquid medicine is atomized and then sprayed to the mouth and nose of the patient under the action of the atomizing nozzle 1.

The control box 4 is positioned at the rear part of the headrest 3 and used for controlling the spraying of the medicine, and the lower ends of the delay valve 20 and the medicine feeder 2 are positioned in the control box 4. As shown in fig. 2, an arc-shaped rack 19 is disposed at the rear side of the lower end of the headrest 3, and the arc center of the arc-shaped rack 19 is located at the hinge point of the headrest 3. The rear part of the arc-shaped rack 19 is provided with a gear 15 meshed with the arc-shaped rack. The gear 15 is of a hollow structure, and the side wall of the inner cavity is provided with a ratchet to form an inner ratchet wheel 17 structure. The medicine feeder 2 is fixedly connected with a horizontal shaft 18 at a position close to the lower end, and the horizontal shaft 18 penetrates through the gear 15. A pawl 16 matched with the inner ratchet wheel 17 is arranged on the horizontal shaft 18 to jointly form an inner meshing ratchet wheel mechanism. The horizontal shaft 18 and the gear 15 can only rotate in one direction through the internal meshing ratchet mechanism, and the direction of the ratchet on the ratchet 17 meets the requirement that when the medicine feeder 2 rotates backwards, the pawl 16 can clamp the ratchet 17 and drive the gear 15 to rotate.

The horizontal shaft 18 is mounted on the front end of the horizontal bar 14. The middle rear portion of the horizontal rod 14 is located inside the cylinder 11. The barrel 11 is fixedly arranged on the control box 4, a hole 12 is formed in the middle of the barrel 11, the middle rear part of the horizontal rod 14 is located in the barrel hole 12, a first spring 13 is sleeved on the horizontal rod 14, the horizontal rod 14 is pushed forwards under the action of the first spring 13, the gear 15 is pushed forwards through the horizontal shaft 18, and therefore the gear 15 is meshed with the arc-shaped rack 19.

A hand brake 7 is arranged below the outer side of the seat armrest 9, the hand brake 7 is connected with the brake cable 6, and the structures of the hand brake 7 and the brake cable 6 are the same as those of the hand brake 7 and the brake cable 6 in the bicycle. The other end of the brake cable 6 is positioned at the rear end of the cylinder body 11, the outer skin of the brake cable 6 is blocked at the rear end of the hole of the cylinder body 11, and the brake cable core wire 10 is fixed at the rear end of the horizontal rod 14.

The medicine storage tank 31 is used for storing liquid medicine, the specific specification, size and medicine dilution condition of the medicine storage tank are determined according to the condition of a patient and the condition of the medicine, the medicine storage tank is particularly suitable for regularly atomizing and inhaling liquid medicine, the dosage range of the medicine storage tank is wide, and the use is safe. The liquid medicine can be prepared at one time in a hospital and replaced by a clockwork, so that the preferable medicine storage tank is transparent, and the use condition of the medicine can be observed. Compressed air is injected into the medicine storage tank 31, and the compressed air provides the motive force for the medicine to flow and be ejected. The medicine storage tank 31 is connected with the delay valve 20 through a medicine pipe, and the structure of the delay valve 20 is shown in figure 3 and comprises a cylinder body 35, a first piston 28, a second piston 22, a second spring 27, a one-way valve 25 and a linkage valve 38. The cylinder body 35 is a hollow structure with openings at the front end and the rear end, a partition plate 34 is arranged in the middle of the cylinder body 35, and the cylinder body 35 is divided into a front cavity and a rear cavity through the partition plate 34, namely a front cavity 26 and a rear cavity 23. The first piston 28 and the second piston 22 are respectively positioned in the front cavity 26 and the rear cavity 23, the first piston rod 29 is fixedly arranged on the front side surface of the first piston 28, and the front end of the first piston rod 29 extends out of the cylinder body 35 and is propped against the lower end of the medicine feeder 2. A second spring 27 is arranged between the first piston 28 and the partition plate 34, and the first piston 28 is pushed forwards under the action of the second spring 27. The partition 34 is provided with a check valve 25 and a fine hole 24, respectively. The check valve 25 is connected with the front cavity 26 and the rear cavity 23 on the cylinder body 35, air in the rear cavity 23 can rapidly flow into the front cavity 26 in a one-way mode through the action of the check valve 25, and air in the front cavity 26 cannot flow into the rear cavity 23 from the check valve 25. The air in the front and rear cavities 23 can be made to flow slowly by the action of the fine holes 24. The rear side surface of the second piston 22 is fixedly provided with a second piston rod 21, and the rear end of the second piston rod 21 extends out of the cylinder body 35. The rear end of the second piston rod 21 is connected with the linkage valve 38, the linkage valve 38 is opened when the second piston rod 21 moves backwards, the linkage valve 38 is closed when the second piston rod 21 moves forwards, the linkage valve 38 is the prior art, and the inner structure of the linkage valve is not described in a repeated manner. The outlet of the linkage valve 38 is connected with the atomizing nozzle 1 on the medicine feeder 2 through a medicine pipe.

The delay valve 20 works as follows: when 2 upper ends of medicine feeder are rotatory forward, 2 lower extremes of medicine feeder are rotatory backward, promote piston 28 backward through a piston rod 29 No. one, thereby the partial volume at a piston 28 rear in the cylinder body 35 antechamber 26 reduces, atmospheric pressure increases, check valve 25 closes, the chamber 23 is gone into to the air in the antechamber 26 slow entering in the follow pore 24, the atmospheric pressure of the air in No. two pistons 22 the place ahead is crescent, promote No. two pistons 22 and remove slowly backward, after a period, open linkage valve 38 through No. two piston rods 21, thereby medicine storage tank 31 is linked together with atomizer 1, the liquid medicine is spout through atomizer 1.

The operation flow is as follows: after the patient lies down and has a rest on the seat 8, the head naturally falls down backwards, the headrest 3 is pushed backwards, the arc-shaped rack 19 on the headrest 3 drives the gear 15 to rotate, the inner ratchet 17 on the gear 15 drives the horizontal shaft 18 to rotate through the pawl 16, the horizontal shaft 18 drives the medicine to be fed forwards, and the sprayer 1 on the medicine feeder 2 is aligned to the face of the patient. Meanwhile, the piston rod No. one 29 is pushed backwards by the lower end of the medicine feeder 2, the patient holds the hand brake 7, the horizontal rod 14 is pulled backwards through the brake wire 6, and the horizontal rod 14 pulls the horizontal shaft 18 and the gear 15, so that the gear 15 and the arc-shaped rack 19 are separated. The first piston 28 and the first piston rod 29 are pushed forwards under the action of the second spring 27 in the delay valve 20, the lower end of the medicine feeder 2 is pushed forwards under the action of the first piston 28, the lower end of the medicine feeder 2 rotates forwards by a certain angle around the horizontal shaft 18, and meanwhile, the upper end of the medicine feeder 2 rotates backwards by a certain angle along with the rotation, so that the medicine feeder 2 is restored to the original angle; meanwhile, in the time delay valve 20, after the first piston 28 is pushed forward by the second spring 27 for a certain distance, the air pressure behind the first piston 28 in the front cavity 26 is reduced, the check valve 25 is opened, and the air in front of the second piston 22 in the rear cavity 23 enters the front cavity 26 through the check valve 25, so that the air pressure in front of the second piston 22 in the rear cavity 23 is reduced and is smaller than the atmospheric pressure, and the second piston 22 is pushed forward to move to the original position under the action of the pressure difference in the front-back direction of the second piston 22. Since the delay valve 20 has a delay function, the medicine is not sprayed from the nozzle in the whole process from the backward rotation of the headrest 3 to the holding of the hand brake 7 by the user, and thus the unnecessary medicine spraying process caused by the false triggering of the headrest 3 can be effectively prevented by a series of structures such as the hand brake 7.

For a conscious patient, without holding the lower hand brake 7, what is achieved is: the administration control is carried out through the change of the head position, and the scapulohumeral periarthritis patient, the flaccid paralysis patient and the extremely weak patient can be administered by themselves without being nursed by other people.

To spontaneous coma or epileptic patient, after the patient is sick, the head can be by autonomic leaning back to promote headrest 3 backward, will send medicine ware 2 to push out forward through headrest 3, and atomizer 1 is sent patient's face, and after a period of time through the effect of delay valve 20, linkage valve 38 is opened, and atomizer 1 begins to spout the medicine to the patient. The built-in medicine needs to be placed with emergency medicine according to the possible situation of the patient, and the epileptic patient can be wakened only by facial blowing stimulation without placing the medicine.

Other accessories can be equipped with to this device according to the patient's condition, for example, prevent the bondage area of health gliding, increase the comfort level through the contained angle of adjustment back of the chair and seat, avoid the patient to lean forward after coma etc.. Belonging to the specific analysis of specific situations, the description is not repeated herein.

In embodiment 2, considering that some people lose consciousness due to illness, the head of the patient may be shifted to one side involuntarily when lying down, and when the spray head 1 on the medicine feeder 2 sprays the medicine on the face of the patient, the medicine cannot be applied precisely because the medicine cannot be applied by aligning with the face of the patient and aligning with the side of the head of the patient. In this embodiment, the above problem is further improved on the basis of embodiment 1, and in this embodiment, only the technical features different from embodiment 1 are described, and other technical features not mentioned are the same as embodiment 1.

As shown in fig. 4, the left and right sides of the front side of the headrest 3 are respectively provided with a side stop 30, the side stops 30 are hinged to the headrest 3, and the hinged parts are provided with torsion springs, so that the torsion springs provide the acting force for the headrest 3 to deflect towards the middle direction. When the head of the patient leans against the headrest 3 and is deflected leftwards or backwards, the side stop 30 can be deflected outwards at a certain angle, and when the head of the patient leaves the side stop 30, the side stop 30 is reset under the action of the torsion spring. The side stop 30 has three functions: firstly, when a patient has a rest on the chair 8, the head of the patient sometimes deflects to one side, and the head of the patient can be supported through the action of the side stop 30, so that the patient is more comfortable; secondly, the side turning of the seat 8 caused by the overlarge inclination angle of the body is prevented; the third pass side stop 30 triggers an automatic drug delivery switch to control the automatic drug delivery mode.

The middle position and the left and right sides of the medicine feeder 2 are respectively provided with a group of atomizing nozzles 1, and after a patient lies down due to morbidity, the corresponding atomizing nozzles 1 respectively spray medicine to the face of the patient when the head of the patient faces to the front or the left and right sides respectively.

A first three-way valve 32 and a second three-way valve 33 are respectively arranged behind the two side baffles 30. The three-way valve comprises an inlet and two outlets, a valve core for controlling the communication relation between the openings and a valve rod for controlling the movement of the valve core are arranged in the three-way valve, the valve rod extends out of the three-way valve, when the side baffle 30 deflects under the action of the head, the side baffle 30 can push the valve rod to move, the valve rod pushes the valve core to move, the communication relation of the three-way valve can be changed, and after the side baffle 30 is reset, the valve rod and the valve core are reset accordingly. The three-way valve is the prior art, and the specific structure thereof is not described repeatedly.

As shown in fig. 5, the first three-way valve 32 includes a medicine inlet a and medicine outlets b and c, and the second three-way valve 33 includes a medicine inlet d and medicine outlets e and f. In the natural state, the port a is communicated with the port c, the port d is communicated with the port f, when the side stop 30 deflects to press down the corresponding valve rod, the port a is communicated with the port b, and the port d is communicated with the port e. The medicine outlet of medicine storage tank 31 pass through the medicine inlet of pencil connection delay valve 20, the medicine outlet of delay valve 20 passes through a pencil and connects a three-way valve 32a mouth, No. two three-way valve 33d mouths are connected to a three-way valve 32c mouth, the atomizer 1 of intermediate position on 2 medicine feeders is connected to No. two three-way valve 33f mouths, the atomizer 1 of this three-way valve place one side on 2 medicine feeders is connected respectively to a three-way valve 32b mouth and No. two three-way valve 33e mouths.

The operation flow is as follows: after the patient lies down on the seat 8 for rest, the head naturally falls down backwards, the headrest 3 is pushed backwards, the patient holds the hand brake 7 down before spraying medicine, and the medicine spraying device is prevented from being triggered by mistake under the action of the delay valve 20.

When the head of the patient pushes the headrest 3 backwards after the patient suffers from a disease, the head of the patient may be pressed at the middle of the headrest 3 or may deflect towards one time. When the patient's head is positioned in the middle of the head rest 3. Two three-way valves all are in natural state, and the mouth c is connected to a mouth promptly, and the mouth f is connected to the d mouth, therefore the liquid medicine flows from storing up medicinal cupping 31, time delay valve 20, a mouth, c mouth, d mouth, f mouth in proper order, enters into the atomizer 1 of the intermediate position on the medicine sender 2, and patient's face is above forward this moment, and the atomizer 1 of the 2 intermediate positions of medicine sender is just to patient's face, the accurate face with the medicine spraying to the patient.

Many times patient's head still can not be by autonomic skew to one side, keeps off 30 the pressure down with the side of this side simultaneously, keeps off the effect of 30 through the side and presses down the valve rod of the three-way valve of this side to can change the flow direction of this three-way valve, the liquid medicine flows to the atomizer 1 of homonymy through the pencil in this three-way valve, and the blowout, and just to patient's face between the shower nozzle 1 of this side, thereby can accurately use medicine to the patient.

In embodiment 3, the main structure of this embodiment is the same as that of embodiment 1 or embodiment 2, and on this basis, this embodiment further includes an electric inflator. The medicine storage tank 31 is filled with high-pressure gas under the action of the electric air pump, and the liquid medicine is driven to be sprayed out under the action of the high-pressure gas. Be equipped with baroceptor in the medicine storage tank 31, the opening and close of electronic pump is controlled through baroceptor's effect, and after the atmospheric pressure in medicine storage tank 31 was less than a certain numerical value of setting for promptly, the electronic pump was started through baroceptor, and after the atmospheric pressure was higher than a certain numerical value of setting for in medicine storage tank 31, the effect through baroceptor was closed electronic pump.

The air pressure sensor and the electric inflator pump are both in the prior art, and the specific structure and the circuit connection relation are not described in a tired manner.

In embodiment 4, the main structure of this embodiment is the same as that of embodiment 1 or embodiment 2, and the same portions are not described again in this embodiment.

As shown in fig. 6, the seat 8 includes a seat plate 37, i.e., a horizontal plate for receiving the weight of a human body. The front edge of the seat plate 37 is hinged to the seat 8, a torsion spring (not shown) is arranged at the hinged position, and the seat plate 37 is bounced upward by a certain angle (as shown by a two-dot chain line in fig. 6) in the rear direction under the action of the torsion spring, so that the seat plate 37 is inclined upward from the rear to the front in a natural state.

An air pump 36 is arranged below the seat plate 37, the outer pipe of the air pump 36 is arranged on the seat 8, the upper end of the inner pipe of the air pump 36 is arranged on the lower surface of the seat plate 37, and the air outlet of the air pump 36 is connected with the medicine storage tank 31.

When the patient sits on the chair 8, the pump 36 is depressed by the seat plate 37 and the drug reservoir 31 is inflated by the pump 36.

It should be noted that while the invention has been described in detail with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various obvious changes can be made therein without departing from the spirit and scope of the invention.

Claims

1. A chair capable of automatic spray administration, characterized by: comprises a seat body and an administration assembly; the seat body comprises a seat, armrests, a backrest and a headrest; the drug delivery assembly comprises a drug delivery device, a control box, a hand brake, a drug storage tank, a first three-way valve, a second three-way valve and a delay valve; the headrest is positioned above the backrest, the lower end of the headrest is hinged with the upper end of the backrest, a torsion spring is arranged at the hinged position, and forward acting force is applied to the headrest through the elastic action of the torsion spring; the left side and the right side of the front side of the headrest are respectively provided with a side stop, the side stops are hinged with the headrest, the hinged positions are provided with torsional springs, and the acting force of the torsional springs is used for giving the acting force of the headrest deflecting towards the middle direction; the medicine feeder main body is of an n-shaped rod-shaped or hollow tubular structure, and two ends of the medicine feeder are respectively positioned at the positions behind two sides of the headrest; the middle position and the left and right sides of the medicine feeder are respectively provided with a group of atomizing nozzles, and the liquid medicine is atomized and then sprayed to the mouth and nose of a patient under the action of the atomizing nozzles; the control box is positioned at the rear part of the headrest, and the lower ends of the delay valve and the medicine feeder are positioned in the control box; the rear side of the lower end of the headrest is provided with an arc-shaped rack, and the arc circle center of the arc-shaped rack is positioned at the hinge point of the headrest; a gear meshed with the arc-shaped rack is arranged behind the arc-shaped rack; the gear is of a hollow structure, and the side wall of the inner cavity is provided with a ratchet to form an inner ratchet structure; the position on the medicine feeder, which is close to the lower end, is fixedly connected with a horizontal shaft, and the horizontal shaft penetrates through the gear; a pawl matched with the inner ratchet wheel is arranged on the horizontal shaft to jointly form an inner meshing ratchet wheel mechanism; the inner gearing ratchet mechanism enables the horizontal shaft and the gear to rotate only in one direction, and the direction of the ratchet on the ratchet wheel meets the requirement that when the medicine feeder rotates backwards, the pawl can clamp the ratchet wheel and drive the gear to rotate; the horizontal shaft is arranged at the front end of the horizontal rod; the middle rear part of the horizontal rod is positioned in the cylinder body; the cylinder body is fixedly arranged on the control box, a hole is formed in the middle of the cylinder body, the middle rear part of the horizontal rod is positioned in the hole of the cylinder body, a first spring is sleeved on the horizontal rod, and the horizontal rod is pushed forwards under the action of the first spring; a hand brake is arranged below the outer side of the seat armrest and is connected with a brake line; the other end of the brake cable is positioned at the rear end of the cylinder body, the brake cable sheath is blocked at the rear end of the cylinder body hole, and the core wire end of the brake cable is fixed at the rear end of the horizontal rod; the medicine storage tank is used for storing medicine liquid, compressed air is injected into the medicine storage tank, and the compressed air provides power for the medicine to be sprayed out; the medicine storage tank is connected with a delay valve through a medicine pipe, and the delay valve comprises a cylinder body, a first piston, a second spring, a one-way valve and a linkage valve; the cylinder body is of a hollow structure with openings at the front end and the rear end, a partition plate is arranged in the middle of the cylinder body, and the cylinder body is divided into a front cavity and a rear cavity, namely a front cavity and a rear cavity, by the partition plate; the first piston and the second piston are respectively positioned in the front cavity and the rear cavity, a first piston rod is fixedly arranged on the front side surface of the first piston, and the front end of the first piston rod extends out of the cylinder body and is propped against the lower end of the medicine feeder; a second spring is arranged between the first piston and the partition plate, and the first piston is pushed forwards under the action of the second spring; the clapboard is respectively provided with a check valve and a pore; the one-way valve is connected with the front cavity and the rear cavity on the cylinder body, air in the rear cavity can rapidly flow into the front cavity in a one-way mode under the action of the one-way valve, and air in the front cavity cannot flow into the rear cavity from the one-way valve; a second piston rod is fixedly arranged on the rear side surface of the second piston, and the rear end of the second piston rod extends out of the cylinder body; the rear end of the second piston rod is connected with the linkage valve; a first three-way valve and a second three-way valve are respectively arranged behind the side baffles on the two sides; the three-way valves respectively comprise an inlet and two outlets, a valve core for controlling the communication relationship between the openings and a valve rod for controlling the movement of the valve core are arranged in the three-way valves, the valve rod extends out of the three-way valves, when the side block deflects under the action of the head, the side block can push the valve rod to move, and after the side block is reset, the valve rod and the valve core are reset along with the side block; the first three-way valve comprises a medicine inlet a and medicine outlets b and c, and the second three-way valve comprises a medicine inlet d and medicine outlets e and f; when the side block deflects to press down the corresponding valve rod, the port a is communicated with the port b, and the port d is communicated with the port e; the medicine outlet of the medicine storage tank is connected with the medicine inlet of the delay valve through a medicine pipe, the medicine outlet of the delay valve is connected with a three-way valve a port through the medicine pipe, a three-way valve c port is connected with a three-way valve d port, a three-way valve f port is connected with an atomizing nozzle at the middle position on the medicine feeder, and a three-way valve b port and a three-way valve e port are respectively connected with the atomizing nozzle on one side of the three-way valve on the medicine feeder.