Hand fixing device for infusion of psychiatric patient

Abstract

The invention relates to the field of devices for psychiatric patients, and discloses a hand fixing device for transfusion of psychiatric patients, which comprises armrest plates fixedly mounted on two sides of a seat, arm fixing cylinders are symmetrically and fixedly connected to the surfaces of the two armrest plates, and a hand fixing assembly is fixedly connected to the top end of the armrest plate on one side of each arm fixing cylinder. Each hand fixing assembly comprises a palm placing block fixedly connected to the top end of the corresponding armrest plate, a palm center bearing assembly is fixedly inserted into the top end of each palm placing block, and a finger fixing assembly is movably installed on the side, away from the corresponding arm fixing cylinder, of each palm center bearing assembly, of the top end of each palm placing block; by means of the device, the hand of a psychiatric patient can be conveniently fixed in the infusion process, and meanwhile the comfort level of the patient and the infusion effect can be improved.

Description

Technical Field

[0001] The invention relates to the field of devices for psychiatric patients, in particular to a hand fixing device for infusion of psychiatric patients. Background Art

[0002] Psychiatry refers to a disease in which, under the influence of various biological, psychological and social environmental factors, brain dysfunction leads to varying degrees of disorders in mental activities such as cognition, emotion, will and behavior. Psychiatric patients are unable to effectively control their hands during the onset of the disease, and it is very easy to be dangerous if their hands move randomly when the patients need infusion treatment.

[0003] Psychiatric patients are often irritable and nervous during infusion due to their abnormal mental state. They cannot control their behavior and are prone to problems such as needle detachment and blood reflux from the infusion tube to the infusion bottle. Therefore, a hand fixation device is needed to restrain the hands. However, the hand fixation devices currently on the market have the following problems: seat (1) The patient's fingers are tied and kept in the same state for a long time, which will lead to poor blood circulation in the fingers, causing local tissue ischemia, reducing the patient's comfort and causing unnecessary violent struggles; armrest (2) The patient's palms may feel cold during infusion, especially in low temperature environments. Existing hand fixation devices cannot help patients keep their palms warm, causing vasoconstriction, thereby slowing blood circulation and affecting the infusion effect; arm fixation tube (3) The patient needs to keep his palms on the surface of the hand fixation device for a long time during the infusion process. When the patient is emotionally excited and resists fiercely, the palms of the hands are prone to sweating and adhere to the surface of the hand fixation device, which is easy to cause odor and moisture. Summary of the invention

[0004] The purpose of the present invention is to provide a hand fixing device for infusion of psychiatric patients to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a hand fixing device for infusion of psychiatric patients, comprising armrest boards fixedly installed on both sides of a seat, two armrest board surfaces are symmetrically fixedly connected with arm fixing tubes, and the top of the armrest board on one side of each arm fixing tube is respectively fixedly connected with a hand fixing component, each of the hand fixing components respectively includes a palm placement block fixedly connected to the top of the armrest board, and a palm supporting component is plugged and fixed on the top of the palm placement block, a finger fixing component is movably installed on the top of the palm placement block at the side of the palm supporting component away from the arm fixing tube, and a driving component is fixedly installed on one side of the palm placement block.

[0006] Preferably: the palm support assembly includes a fixed frame plugged into the palm placement block, and a plurality of connecting ears are fixedly connected to both sides of the fixed frame, the outer walls of the palm placement block are respectively provided with a plurality of installation grooves adapted to the shape of the connecting ears, and a chamber is provided inside the palm placement block, one side of the palm placement block is arranged as a finger bending part with an arc-shaped cross-section structure, and a palm alignment groove adapted to the shape of the fixed frame is provided at the top of the palm placement block.

[0007] Preferably: the fixed frame is a cross-sectional groove-type box structure, and an opening is provided at the top of the fixed frame, an intermediate plate is fixedly connected to the inner wall of the fixed frame, and side plates that are in smooth contact with the inner wall of the fixed frame are symmetrically provided on both sides of the intermediate plate, through grooves that match the shape of the side plates are respectively opened on both sides of the intermediate plate, and palm support plates are fixedly connected to the tops of the two side plates, the palm support plates are away from the sides of the side plates and are in smooth contact with the inner wall of the fixed frame, and a plurality of vertical holes are opened through the palm support plates along the vertical direction.

[0008] Preferably: the bottom ends of the two side plates are respectively fixedly connected to the top end of the connecting plate, and the outer side of the connecting plate is in smooth contact with the inner wall of the fixed frame, a plurality of puncture needles are fixedly connected to the top end of the connecting plate, and a plurality of puncture holes corresponding to the puncture needles are penetrated in the vertical direction at corresponding positions of the middle plate, a plurality of connecting rods are fixedly connected to the bottom end of the connecting plate, and each connecting rod is slidably penetrated with the bottom end of the fixed frame and extends to the outside of the fixed frame, the bottom end of each connecting rod is respectively fixedly connected to the top end of the first mounting shell, and a first electromagnet is fixedly installed at the center position of the bottom end of the first mounting shell, a second mounting shell is fixedly installed at the bottom end of the inner wall of the palm placement block chamber below the first electromagnet, and a second electromagnet is fixedly installed at the center position of the top end of the second mounting shell.

[0009] Preferably: a non-woven pad is fixedly provided on the surface of the palm support plate, and a heating bag is placed on the surface of the middle plate. The heating bag is made by mixing a certain proportion of iron powder, activated carbon, vermiculite and inorganic salt evenly, adding a proper amount of water and stirring into a paste, and finally vacuum packaging in a plastic packaging bag.

[0010] Preferably: each of the finger fixing components includes eight limit rods distributed in a straight line and slidably connected to the top of the palm placement block, and two adjacent limit rods form a group, the top ends of the two limit rods in each group are respectively fixedly connected to the two ends of the fixing belt, and a synchronous connecting rod is fixedly connected between the two adjacent limit rods.

[0011] Preferably: a rotating shaft is rotatably installed on the inner wall of the palm placement block, and each limit rod is penetrated with a width dimension greater than the diameter dimension of the rotating shaft in the horizontal direction, each limit rod is extended in the vertical direction, and the bottom end of each limit rod is fixedly connected to the top end of the third mounting shell, and a magnet is fixedly installed on the bottom end of the third mounting shell, and the magnet is located directly above the second electromagnet.

[0012] Preferably: an adjustment component is fixedly installed at the center position of the rotating shaft, and the adjustment component includes a connecting wheel that is fixedly sleeved on the outer side of the rotating shaft, a connecting crank is provided on one side of the connecting wheel, and a mounting seat is fixedly installed at the center position of the bottom end of the synchronous connecting rod located at the center position, and the connecting crank is located on the same side and is hinged to the connecting wheel and the mounting seat respectively.

[0013] Preferably: the drive assembly includes a micro motor fixedly installed in an installation box, and the output end of the micro motor is rotatably penetrated by the side wall of the palm placement block and fixedly connected to one end of the rotating shaft, and the installation box of the drive assembly is fixedly installed on the side wall of the palm placement block.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention is provided with a support structure for the palm of the patient's hand, which changes the long-term multi-point contact of the patient's palm with the device into surface contact with the support structure, reduces the strength of the patient's hand fixation during the infusion process, makes the patient more relaxed, and improves the comfort;

[0016] 2. The present invention adopts a heating structure to heat the palm of the patient, promotes blood circulation in the palm of the patient, improves the infusion effect of the patient, and reduces the discomfort of the patient's hand fixation. At the same time, the heating structure can perform the heating process without external energy drive, which is more environmentally friendly and energy-saving;

[0017] 3. After use, the heating structure of the present invention can dry the device and remove odors, thereby improving the dryness of the device and the comfort of the patient;

[0018] 4. The present invention facilitates the fixation of the patient's fingers and facilitates the reasonable relaxation of the patient's fingers, thereby improving the comfort of the patient's fingers during the hand fixation process and reducing the patient's resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic side view of the hand fixing assembly structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the palm fixing assembly structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the finger fixing assembly of the present invention;

[0023] Figure 5 It is an enlarged schematic diagram of the structure at location A of the present invention.

[0024] In the figure: 1, seat; 2, armrest plate; 3, arm fixing tube; 4, hand fixing assembly; 5, palm placement block; 6, palm support assembly; 7, connecting ear; 8, finger fixing assembly; 9, driving assembly; 10, fixing frame; 11, middle plate; 12, side plate; 13, palm support plate; 14, connecting plate; 15, connecting rod; 16, first mounting shell; 17, first electromagnet; 18, second mounting shell; 19, second electromagnet; 20, non-woven fabric block; 21, heating bag; 81, limit rod; 82, fixing belt; 83, synchronous connecting rod; 84, rotating shaft; 85, third mounting shell; 86, magnet; 87, adjusting assembly; 871, connecting wheel; 872, connecting crank; 873, mounting seat; 501; finger bending part; 502, palm alignment groove. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] Example 1

[0027] See also Figure 1-Figure 2 The figure shows a hand fixing device for infusion of psychiatric patients, comprising armrest plates 2 fixedly installed on both sides of a seat 1, arm fixing tubes 3 are symmetrically fixedly connected to the surfaces of the two armrest plates 2, and a hand fixing component 4 is fixedly connected to the top of the armrest plates 2 on each side of the arm fixing tube 3, each hand fixing component 4 comprises a palm placement block 5 fixedly connected to the top of the armrest plate 2, and a palm supporting component 6 is plugged and fixed to the top of the palm placement block 5, a finger fixing component 8 is movably installed on the top of the palm placement block 5 at the side of the palm supporting component 6 away from the arm fixing tube 3, and a driving component 9 is fixedly installed on one side of the palm placement block 5.

[0028] In the present embodiment, when a psychiatric patient is undergoing an infusion, the patient sits on the surface of the seat 1 and respectively passes his two hands through the arm fixing tubes 3 corresponding to the surfaces of the armrest panels 2 on both sides of the seat 1, wherein the arm fixing tubes 3 are provided with a plurality of air bags on the inner side thereof and are equipped with inflation and deflation equipment. The patient's arms are fixed by inflating the plurality of air bags, which has been fully disclosed in the prior art and will not be described in detail here.

[0029] Furthermore, after the patient's arm is fixed through the arm fixing tube 3, the palm is placed on the palm support component 6 on the surface of the palm placement block 5, and each finger is fixed through the finger fixing component 8 respectively, so as to prevent the patient from undergoing the infusion process and preventing the patient from resisting due to intense emotions.

[0030] Example 2

[0031] See also Figure 3-5 In this embodiment, the palm support assembly 6 includes a fixed frame 10 plugged into the palm placement block 5, and a plurality of connecting ears 7 are fixedly connected to both sides of the fixed frame 10, and the outer walls of the palm placement block 5 are respectively provided with a plurality of mounting grooves that are adapted to the shape of the connecting ears 7, and a chamber is provided inside the palm placement block 5, and one side of the palm placement block 5 is provided with a finger bending portion 501 with an arc-shaped cross-section structure. The finger bending portion 501 with an arc-shaped cross-section structure facilitates the patient's finger to be partially bent and placed on the surface of the finger bending portion 501, thereby increasing the patient's comfort, and a palm alignment groove 502 that is adapted to the shape of the fixed frame 10 is provided at the top of the palm placement block 5.

[0032] Furthermore, each finger fixing assembly 8 includes eight limiting rods 81 which are distributed in a straight line and are slidably connected to the top of the palm placement block 5, and two adjacent limiting rods 81 form a group, and the tops of the two limiting rods 81 in each group are respectively fixedly connected to the two ends of the fixing belt 82, and a synchronous connecting rod 83 is fixedly connected between the two adjacent limiting rods 81, and a rotating shaft 84 is rotatably installed on the inner wall of the palm placement block 5, and each limiting rod 81 is respectively penetrated by 810 with a width dimension larger than the diameter dimension of the rotating shaft 84 in the horizontal direction, and each 810 is extended and distributed in the vertical direction of the limiting rod 81, and the bottom end of each limiting rod 81 The third mounting shell 85 is fixedly connected to the top of each of the mounting shells 85. A magnet 86 is fixedly installed at the bottom of the third mounting shell 85. The magnet 86 is located directly above the second electromagnet 19. The fixing frame 10 is a box structure with a grooved cross section, and an opening is arranged at the top of the fixing frame 10. The inner wall of the fixing frame 10 is fixedly connected to an intermediate plate 11, and the two sides of the intermediate plate 11 are symmetrically provided with side plates 12 that are in smooth contact with the inner wall of the fixing frame 10. Through grooves that match the shape of the side plates 12 are respectively opened on both sides of the intermediate plate 11, and the tops of the two side plates 12 are fixedly connected to palm support plates 13, and the palm support plates 13 are away from the two sides of the side plates 12 and are respectively connected to the fixing The inner wall of the frame 10 is in smooth contact, and the palm support plate 13 is penetrated with a plurality of vertical holes in the vertical direction. The bottom ends of the two side plates 12 are respectively fixedly connected to the top of the connecting plate 14, and the outer side of the connecting plate 14 is in smooth contact with the inner wall of the fixed frame 10. The top of the connecting plate 14 is fixedly connected with a plurality of puncture needles, and the corresponding positions of the middle plate 11 are penetrated with a plurality of puncture holes corresponding to the puncture needles in the vertical direction. The bottom end of the connecting plate 14 is fixedly connected with a plurality of connecting rods 15, and each connecting rod 15 is respectively slidably penetrated with the bottom end of the fixed frame 10 and extends to the outside of the fixed frame 10, and the bottom end of each connecting rod 15 is respectively connected with The top of the first mounting shell 16 is fixedly connected, and a first electromagnet 17 is fixedly installed at the center of the bottom end of the first mounting shell 16, a second mounting shell 18 is fixedly installed at the bottom end of the inner wall of the palm placement block 5 below the first electromagnet 17, and a second electromagnet 19 is fixedly installed at the center of the top end of the second mounting shell 18, a non-woven pad 20 is fixedly provided on the surface of the palm support plate 13, and a heating bag 21 is placed on the surface of the middle plate 11, the heating bag 21 is made of a certain proportion of iron powder, activated carbon, vermiculite and inorganic salt mixed evenly, and added with an appropriate amount of water to stir into a paste, and finally vacuum packed in a plastic packaging bag.

[0033] The patient inserts each finger except the thumb between the two limit rods 81 of each group, and then energizes the first electromagnet 17 and the second electromagnet 19 respectively, wherein the first electromagnet 17 and the second electromagnet 19 are annular electromagnets, and the diameter of the second electromagnet 19 is larger than the diameter of the first electromagnet 17. After energization, the second electromagnet 19 and the first electromagnet 17 repel each other, so that the first electromagnet 17 drives the first mounting shell 16 and the connecting rod 15 to move in the vertical direction, so that the connecting rod 15 drives the side plate 12 to lift the palm support plate 13, so that the palm of the patient's palm is supported by the arc-shaped palm support plate 13, and at the same time, the energized second electromagnet 19 attracts the magnet 86, so that the magnet 86 and the third mounting shell 85 drive each limit rod 81 to descend in the vertical direction, so that the patient's fingers are tightened by the fixing belt 82 of each group of limit rods 81, thereby improving the fixation effect of the patient's fingers.

[0034] Furthermore, during the rising process of the side plate 12, a plurality of puncture needles arranged on the surface of the connecting plate 14 fixedly connected to the bottom end of the side plate 12 are displaced in the vertical direction, and pass through the puncture holes of the middle plate 11 to puncture the plastic packaging bag of the heating bag 21, so that air enters the interior of the heating bag 21 on the surface of the middle plate 11 through the vertical holes of the palm support plate 13, and reacts with the composite material composed of iron powder, activated carbon, vermiculite, inorganic salts and water to release heat. The mechanism is to use the primary battery to accelerate the oxidation reaction speed and convert chemical energy into thermal energy. It will not be repeated here. The released heat penetrates into the non-woven pad 20 through the vertical holes of the palm support plate 13. The heating bag 21 can be in contact with the palm of the patient to heat the palm of the patient, improve the patient's comfort, promote blood circulation, and improve the infusion effect. The non-woven pad 20 ensures air permeability while effectively avoiding the risk of burns caused by direct contact between hot air and the human body. After the infusion is completed, the first electromagnet 17 and the second electromagnet 19 are powered off and lose their magnetism. The puncture needle on the surface of the connecting plate 14 leaves the puncture hole of the middle plate 11 along with the connecting plate 14 under the action of gravity. The activated carbon component contained in the broken heating bag 21 can dry the sweat stains on the surface of the fixed frame 10, the palm support plate 13 and the non-woven pad 20, and can also remove odors.

[0035] Further, an adjustment component 87 is fixedly installed at the center position of the rotating shaft 84, and the adjustment component 87 includes a connecting wheel 871 that is sleeved and fixed with the outer side of the rotating shaft 84, a connecting crank 872 is provided on one side of the connecting wheel 871, and a mounting seat 873 is fixedly installed at the center position of the bottom end of the synchronous connecting rod 83 located at the center position, and the connecting crank 872 is located on the same side and is hinged with the connecting wheel 871 and the mounting seat 873 respectively, and the driving component 9 includes a micro motor fixedly installed in the mounting box, and the output end of the micro motor is rotatably penetrated with the side wall of the palm placement block 5 and is fixedly connected to one end of the rotating shaft 84, and the driving component 9 The installation box is fixedly installed on the side wall of the palm placement block 5, and controls the micromotor of the driving component 9, so that the output end of the micromotor drives the rotating shaft 84 to rotate, and the rotating shaft 84 drives the connecting wheel 871 to rotate, and the transmission of the connecting crank 872 is used to make the mounting seat 873 periodically push and pull the synchronous connecting rod 83 along the vertical direction. Combined with the strip structure 810 opened on each limit rod 81, the patient's fingers can be relaxed periodically, and the fingers will not be in a tightly bound state all the time, which is beneficial to the blood circulation of the patient's fingers, and also avoids the patient's fingers from not being relaxed and causing resistance.

[0036] Example 3

[0037] In another embodiment of the present invention, two fixing columns are fixedly installed on the surface of the palm placement block 5 on one side of the multiple limiting rods 81, and elastic bands are fixedly installed on the top of the two fixing columns. The two fixing columns are arranged in parallel and at a certain angle to the limiting rods 81, which are used for fixing the patient's thumb. The elastic force of the elastic band allows the patient to actively relax and stretch the thumb area.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hand fixing device for psychiatric patients during infusion, comprising armrests (2) fixedly mounted on both sides of a seat (1), characterized in that: The surfaces of the two armrest boards (2) are symmetrically fixedly connected with arm fixing tubes (3), and the top of the armrest board (2) on one side of each arm fixing tube (3) is fixedly connected with a hand fixing assembly (4), each of the hand fixing assemblies (4) comprises a palm placement block (5) fixedly connected to the top of the armrest board (2), and a palm support assembly (6) is inserted and fixed to the top of the palm placement block (5), a finger fixing assembly (8) is movably installed on the top of the palm placement block (5) on the side of the palm support assembly (6) away from the arm fixing tube (3), and a driving assembly (9) is fixedly installed on one side of the palm placement block (5).

2. A hand fixing device for infusion of psychiatric patients according to claim 1, characterized in that: The palm support assembly (6) comprises a fixed frame (10) plugged into and matched with the palm placement block (5), and a plurality of connecting ears (7) are fixedly connected to both sides of the fixed frame (10), the outer wall of the palm placement block (5) is respectively provided with a plurality of mounting grooves matching the shape of the connecting ears (7), and a chamber is provided inside the palm placement block (5), one side of the palm placement block (5) is provided with a finger bending portion (501) with an arc-shaped cross-section structure, and the top of the palm placement block (5) is provided with a palm alignment groove (502) matching the shape of the fixed frame (10).

3. A hand fixing device for infusion of psychiatric patients according to claim 2, characterized in that: The fixing frame (10) is a box structure with a grooved cross section, and an opening is arranged at the top of the fixing frame (10). The inner wall of the fixing frame (10) is fixedly connected with an intermediate plate (11), and side plates (12) are symmetrically arranged on both sides of the intermediate plate (11) and are in smooth contact with the inner wall of the fixing frame (10). Through grooves matching the shape of the side plates (12) are respectively opened on both sides of the intermediate plate (11), and the tops of the two side plates (12) are fixedly connected with palm support plates (13), and the palm support plates (13) are away from the sides of the side plates (12) and are in smooth contact with the inner wall of the fixing frame (10), and the palm support plates (13) are penetrated by a plurality of vertical holes in the vertical direction.

4. A hand fixing device for infusion of psychiatric patients according to claim 3, characterized in that: The bottom ends of the two side plates (12) are respectively fixedly connected to the top end of the connecting plate (14), and the outer side of the connecting plate (14) is in smooth contact with the inner wall of the fixed frame (10). The top end of the connecting plate (14) is fixedly connected with a plurality of puncture needles, and the corresponding positions of the middle plate (11) are penetrated with a plurality of puncture holes corresponding to the puncture needles in a vertical direction. The bottom end of the connecting plate (14) is fixedly connected with a plurality of connecting rods (15), and each connecting rod (15) is respectively slidably penetrated with the bottom end of the fixed frame (10) and extends to the outside of the fixed frame (10). The bottom end of each connecting rod (15) is respectively fixedly connected to the top end of the first mounting shell (16), and a first electromagnet (17) is fixedly installed at the center position of the bottom end of the first mounting shell (16). The bottom end of the inner wall of the palm placement block (5) chamber is located below the first electromagnet (17) and a second mounting shell (18) is fixedly installed, and a second electromagnet (19) is fixedly installed at the center position of the top end of the second mounting shell (18).

5. A hand fixing device for infusion of psychiatric patients according to claim 4, characterized in that: A non-woven fabric pad (20) is fixedly arranged on the surface of the palm support plate (13), and a heating bag (21) is placed on the surface of the middle plate (11). The heating bag (21) is made by uniformly mixing a certain proportion of iron powder, activated carbon, vermiculite and inorganic salt, adding a proper amount of water and stirring into a paste, and finally vacuum packaging in a plastic packaging bag.

6. A hand fixing device for infusion of psychiatric patients according to claim 5, characterized in that: Each of the finger fixing components (8) comprises eight limiting rods (81) which are distributed in a straight line and are connected to the top of the palm placement block (5) by sliding through, and two adjacent limiting rods (81) form a group, and the tops of the two limiting rods (81) in each group are respectively fixedly connected to the two ends of the fixing belt (82), and a synchronous connecting rod (83) is fixedly connected between the two adjacent limiting rods (81).

7. A hand fixing device for infusion of psychiatric patients according to claim 6, characterized in that: The palm placement block (5) has an inner wall rotatably mounted with a rotating shaft (84), and each limiting rod (81) is penetrated with a width (810) larger than the diameter of the rotating shaft (84) in the horizontal direction, and each (810) extends and distributes along the limiting rod (81) in the vertical direction, and the bottom end of each limiting rod (81) is fixedly connected to the top end of the third mounting shell (85), and a magnet (86) is fixedly mounted on the bottom end of the third mounting shell (85), and the magnet (86) is located directly above the second electromagnet (19).

8. A hand fixing device for infusion of psychiatric patients according to claim 7, characterized in that: An adjustment assembly (87) is fixedly mounted at the center of the rotating shaft (84), and the adjustment assembly (87) comprises a connecting wheel (871) sleeved and fixed to the outer side of the rotating shaft (84), a connecting crank (872) is arranged on one side of the connecting wheel (871), and a mounting seat (873) is fixedly mounted at the center of the bottom end of the synchronous connecting rod (83) located at the center, and the connecting crank (872) is located on the same side and is respectively hinged to the connecting wheel (871) and the mounting seat (873).

9. A hand fixing device for infusion of psychiatric patients according to claim 8, characterized in that: The drive assembly (9) comprises a micro motor fixedly mounted in an installation box, and the output end of the micro motor is rotatably arranged to penetrate the side wall of the palm placement block (5) and is fixedly connected to one end of the rotating shaft (84), and the installation box of the drive assembly (9) is fixedly mounted on the side wall of the palm placement block (5).

Images