Medical hand suction apparatus calibration device

Abstract

The application provides a medical manual aspirator calibration device, and belongs to the technical field of pressure measurement, and comprises a detection support mechanism and a clamping control mechanism. The detection support mechanism comprises a box body, a connecting head clamping assembly and a gas pressure sensor I. The clamping control mechanism comprises a needle cylinder clamping assembly and a piston control assembly. The piston control assembly is used for pushing and pulling the piston multiple times at different speeds, so that the gas pressure in the box body changes correspondingly. After the piston is pulled at different speeds, whether the negative pressure generated in the needle cylinder is qualified can be judged, and the calibration of the medical manual aspirator can be accurately completed. The technical problem that the existing negative pressure suction calibration mode is subjectively judged by the staff and the detection data is not accurate is effectively improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of pressure measurement, and specifically discloses a medical manual aspirator calibration device. BACKGROUND

[0002] The medical aspirator is used for sucking away the sputum, bleeding, exudate, pus, and contents in the thoracic cavity and organs of the human body, so that the human body structure can be clearly observed during the treatment process, and the pollution opportunity is reduced.

[0003] The manual aspirator is disclosed in Chinese Patent No. CN211157559U. In use, the medical manual aspirator needs to be calibrated. The worker operates the manual aspirator, so that the negative pressure suction force generated by the manual aspirator acts on the body, and then whether the negative pressure generated by the manual aspirator is normal is judged according to experience. The above-mentioned calibration method is subject to the subjective judgment of the worker, and the detection data is not accurate, which is easy to cause medical accidents. SUMMARY

[0004] The application provides a medical manual aspirator calibration device to solve the technical problem that the existing negative pressure suction force calibration method is subject to the subjective judgment of the worker, and the detection data is not accurate.

[0005] The medical manual aspirator calibration device comprises a detection support mechanism and a clamping and positioning mechanism. The detection support mechanism comprises a box body, a connecting head clamping assembly and a gas pressure sensor I. The clamping and positioning mechanism comprises a needle cylinder clamping assembly and a piston positioning assembly. The needle cylinder clamping assembly is used for clamping and fixing the needle cylinder of the medical manual aspirator. The piston positioning assembly is used for fixing the piston of the medical manual aspirator and pushing the piston to move relative to the needle cylinder at different speeds. The box body is provided with a gas hole I, which is used for connecting with the connecting head of the medical manual aspirator. The connecting head clamping assembly comprises a gas guide ring, an elastic expansion ring, a gas guide block, an on-off valve I, a gas guide pipe I, a three-way valve, a vacuum pump, a gas guide pipe II and an on-off valve II. The gas guide ring is fixed outside the box body and surrounds the gas hole I. The elastic expansion ring is fixed on the inner wall of the gas guide ring and communicates with the gas guide ring. The elastic expansion ring expands and wraps outside the connecting head, so that the connecting head and the elastic expansion ring are sealed. The gas guide block is fixed on the outer wall of the gas guide ring and communicates with the gas guide ring. The on-off valve I is fixed on the gas guide block. The three-way valve and the vacuum pump are fixed outside the box body. The three-way valve is provided with an air inlet, a normally open exhaust port and a normally closed exhaust port. The air inlet communicates with the exhaust port of the vacuum pump, and the normally closed exhaust port communicates with the gas guide block through the gas guide pipe I. The gas guide pipe II passes through the box body. The end portion in the box body is fixed with the on-off valve II, and the end portion outside the box body is connected with the air inlet of the vacuum pump. The gas pressure sensor I is used for detecting the gas pressure in the box body.

[0006] The box is further provided with an air hole II, and a on-off valve III is installed on the air hole II; the air guide block is further fixed with an air pressure sensor II.

[0007] The needle cylinder clamping assembly comprises a clamping seat I, a clamping seat II, a connecting beam and a telescopic cylinder III; the clamping seat I is fixed, and an arc-shaped groove I is arranged on the upper surface of the clamping seat I; the clamping seat II is located above the clamping seat I, and an arc-shaped groove II is arranged on the lower surface of the clamping seat II; the connecting beam vertically penetrates through the clamping seat I, and the top end is connected with the clamping seat II; the telescopic cylinder III drives the connecting beam to move up and down vertically to the clamping seat I.

[0008] The needle cylinder clamping assembly further comprises a positioning plate, a displacement sensor and a pressure sensor; the positioning plate is vertically connected with the connecting beam; the displacement sensor is fixed on the clamping seat I and used for detecting the distance between the clamping seat I and the positioning plate; and the pressure sensor is used for detecting the pressure of the telescopic cylinder III.

[0009] The piston position control assembly comprises a moving frame II, a telescopic cylinder IV, two limiting rods, a limiting plate I, two plug-in rods, a limiting plate II, a threaded rod and a nut seat; the moving frame II and the clamping seat I are connected through the telescopic cylinder IV; the two limiting rods are fixed vertically on the moving frame II, and the plug-in rods are vertically arranged on each limiting rod; the limiting plate I is connected with the first ends of the two plug-in rods; the limiting plate II is connected with the second ends of the two plug-in rods; the nut seat is fixed on the moving frame II; the threaded rod penetrates through the nut seat, and the first end of the threaded rod is rotationally connected with the limiting plate II.

[0010] The piston position control assembly further comprises a telescopic rod II; the telescopic cylinder IV and the fixed end of the telescopic rod II are connected with the clamping seat I, and the telescopic ends are connected with the moving frame II; the second end of the threaded rod is provided with a hand wheel.

[0011] The detection support mechanism further comprises a workbench; the clamping seat I is fixed on the workbench, and the box and the piston position control assembly are located on the two sides of the clamping seat I.

[0012] The workbench is provided with a limiting groove; the limiting groove and the piston position control assembly are located on the two sides of the clamping seat I; the detection support mechanism further comprises a position control assembly; the position control assembly comprises a telescopic cylinder I, a moving frame I, a telescopic rod I and a telescopic cylinder II; the moving frame I is slidably connected with the limiting groove; the two ends of the telescopic cylinder I are respectively connected with the workbench and the moving frame I; the box is located above the moving frame I, and the box and the moving frame I are connected through the telescopic rod I and the telescopic cylinder II.

[0013] The number of the connecting beams is two; the two connecting beams are vertically through the clamping seat I and the workbench, and the bottom ends are connected through the connecting plate; the two ends of the telescopic cylinder III are connected with the workbench and the connecting plate respectively; the two ends of the positioning plate are connected with the two connecting beams respectively; the clamping seat I is provided with an installation groove, and the pressure sensor is fixed in the installation groove.

[0014] The medical manual aspirator calibration device further comprises a controller; the controller is fixed on the workbench, and the controller is provided with a display screen and an operation panel; the on-off valve I, the air pressure sensor II, the three-way valve, the vacuum pump, the on-off valve II, the air pressure sensor I, the on-off valve III, the telescopic cylinder III, the displacement sensor, the pressure sensor, the telescopic cylinder IV, the telescopic cylinder I and the telescopic cylinder II are connected with the controller; and the workbench is supported through a plurality of supporting legs.

[0015] Compared with the prior art, the medical manual aspirator calibration device has the following beneficial effects.

[0016] When the device is used, first, the needle cylinder is fixed through the needle cylinder clamping assembly, the piston is fixed through the piston control assembly, the connecting head is inserted into the air hole I, the vacuum pump is started, the normally closed exhaust port of the on-off valve II and the three-way valve is opened, the on-off valve I is closed, the vacuum pump extracts the gas in the box, and the gas is transported to the gas guide ring through the three-way valve, the gas guide pipe I and the gas guide block, so that the elastic expansion ring is inflated, the elastic expansion ring is wrapped outside the connecting head, and the connecting head and the elastic expansion ring are sealed; then the normally closed exhaust port of the three-way valve is closed, the normally open exhaust port is opened, the air pressure sensor I detects that the air pressure in the box reaches the preset value, the vacuum pump stops, and the on-off valve II is closed; finally, the piston is pushed and pulled multiple times at different speeds through the piston control assembly, so that the air pressure in the box changes correspondingly, whether the negative pressure generated in the needle cylinder after the piston is pulled at different speeds is qualified is judged, and the calibration of the medical manual aspirator can be accurately completed, and the technical problem that the existing negative pressure suction calibration mode is subjectively judged by the staff and the detection data is not accurate is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0018] Figure 1 It is a structural schematic view of the medical manual aspirator calibration device.

[0019] Figure 2 It is a structural schematic view of the medical manual aspirator calibration device. Figure 1 It is an enlarged view of part A in the figure.

[0020] Figure 3 Assembly view of the box and the clamping assembly of the connector;

[0021] Figure 4 Assembly view of the air guide ring, the elastic expansion ring and the air guide block;

[0022] Figure 5 Internal schematic view of the box;

[0023] Figure 6 Assembly view of the clamping control mechanism and the workbench;

[0024] Figure 7 Schematic view of the structure of the clamping control mechanism;

[0025] Figure 8 Assembly view of the clamping seat II and the connecting beam;

[0026] Figure 9 Assembly view of the piston control assembly and the clamping seat I;

[0027] Figure 10 Assembly view of the limiting plate I, the plug-in rod, the limiting plate II and the threaded rod;

[0028] Figure 11 Clamping schematic view of the operation handle.

[0029] Reference numerals in the figure: 11, workbench; 12, support leg; 13, box; 14, limiting groove; 15, telescopic cylinder I; 16, moving frame I; 17, telescopic rod I; 18, telescopic cylinder II; 19, air hole I; 110, air guide ring; 111, elastic expansion ring; 112, air guide block; 113, on-off valve I; 114, air pressure sensor II; 115, air guide pipe I; 116, three-way valve; 117, vacuum pump; 118, air guide pipe II; 119, on-off valve II; 120, air pressure sensor I; 121, on-off valve III;

[0030] 21, clamping seat I; 22, arc-shaped groove I; 23, moving frame II; 24, telescopic rod II; 25, telescopic cylinder IV; 26, limiting rod; 27, limiting plate I; 28, plug-in rod; 29, limiting plate II; 210, threaded rod; 211, nut seat; 212, hand wheel; 213, clamping seat II; 214, arc-shaped groove II; 215, connecting beam; 216, positioning plate; 217, connecting plate; 218, telescopic cylinder III; 219, displacement sensor; 220, pressure sensor; 221, mounting groove;

[0031] 3, controller;

[0032] 41, needle cylinder; 42, connector; 43, waste liquid collection pipe; 44, plugging piece; 45, handle; 46, piston; 47, operation handle. DETAILED DESCRIPTION

[0033] The technical solutions of the present application will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0034] The present application provides a kind of medical manual aspirator calibration device, for medical manual aspirator is calibrated.Medical manual aspirator includes needle cylinder 41 and piston 46;The central position of the first end of needle cylinder 41 is provided with connector 42, connector 42 is used to connect medical sputum suction tube, suction tube or blood vessel, the outside of connector 42 is provided with waste liquid collection pipe 43, waste liquid collection pipe 43 is used to connect waste liquid collection container;The first end of piston 46 is movably inserted in needle cylinder 41, and the second end is provided with operating handle 47;Operating handle 47 provides force point for user to control piston 46, so that piston 46 moves in needle cylinder 41 and generates negative pressure suction force;The outside of needle cylinder 41 is provided with handle 45, handle 45 provides holding position for user, to facilitate the control of medical manual aspirator.

[0035] Example 1

[0036] The medical manual aspirator calibration device provided by the embodiment comprises a detection supporting mechanism and a clamping and positioning mechanism; the detection supporting mechanism comprises a box 13, a connecting head clamping assembly and a gas pressure sensor I 120; the clamping and positioning mechanism comprises a needle cylinder clamping assembly and a piston positioning assembly; the needle cylinder clamping assembly is used for clamping and fixing the needle cylinder 41 of the medical manual aspirator; the piston positioning assembly is used for fixing the piston 46 of the medical manual aspirator and pushing the piston 46 to move relative to the needle cylinder 41 at different speeds; the box 13 is provided with a gas hole I 19, which is used for connecting with the connecting head 42 of the medical manual aspirator; the connecting head clamping assembly comprises a gas guide ring 110, an elastic expansion ring 111, a gas guide block 112, an on-off valve I 113, a gas guide pipe I 115, a three-way valve 116, a vacuum pump 117, a gas guide pipe II 118 and an on-off valve II 119; the gas guide ring 110 is fixed outside the box 13 and surrounds the gas hole I 19; the elastic expansion ring 111 is fixed on the inner wall of the gas guide ring 110 and communicates with the gas guide ring 110, the elastic expansion ring 111 expands and wraps outside the connecting head 42, so that the connecting head 42 and the elastic expansion ring 111 are sealed; the gas guide block 112 is fixed on the outer wall of the gas guide ring 110 and communicates with the gas guide ring 110; the on-off valve I 113 is fixed on the gas guide block 112; the three-way valve 116 and the vacuum pump 117 are fixed outside the box 13; the three-way valve 116 is provided with an air inlet, a normally open exhaust port and a normally closed exhaust port, the air inlet communicates with the exhaust port of the vacuum pump 117, and the normally closed exhaust port communicates with the gas guide block 112 through the gas guide pipe I 115; the gas guide pipe II 118 penetrates through the box 13, the end portion in the box 13 is fixed with the on-off valve II 119, and the end portion outside the box 13 is connected with the air inlet of the vacuum pump 117; the gas pressure sensor I 120 is used for detecting the gas pressure in the box 13.

[0037] The medical manual aspirator calibration process provided by the embodiment is as follows:

[0038] S1, a plugging piece 44 is installed outside the waste liquid collecting pipe 43, the waste liquid collecting pipe 43 is sealed, it is ensured that the medical manual aspirator can only communicate with the outside world through the connecting head 42, and the first end of the piston 46 is pressed against the needle cylinder 41;

[0039] S2, the needle cylinder 41 is fixed by the needle cylinder clamping assembly, the piston 46 is fixed by the piston control assembly, the connector 42 is inserted into the air hole 119, the vacuum pump 117 is started, the on-off valve 119 is opened, the normally closed exhaust port of the three-way valve 116 is opened, the on-off valve 113 is closed, the vacuum pump 117 extracts the gas in the box 13, the gas is transported to the gas guide ring 110 through the three-way valve 116, the gas guide pipe 115 and the gas guide block 112, the elastic expansion ring 111 is inflated and expanded, the elastic expansion ring 111 is wrapped outside the connector 42, the connector 42 and the elastic expansion ring 111 are sealed, with the increase of the working time of the vacuum pump 117, the gas pressure in the elastic expansion ring 111 increases, the sealing between the connector 42 and the elastic expansion ring 111 increases, until the sealing requirement is reached, the normally closed exhaust port of the three-way valve 116 is closed, the normally open exhaust port is opened, and the gas discharged by the vacuum pump 117 is discharged through the normally open exhaust port of the three-way valve 116;

[0040] S3, when the sealing between the connector 42 and the elastic expansion ring 111 reaches the sealing requirement, the box 13 is in a sealed state, the vacuum pump 117 continues to work to reduce the gas pressure in the box 13, and the vacuum pump 117 stops when the gas pressure sensor 120 detects that the gas pressure in the box 13 reaches a preset value P1, and the on-off valve 119 is closed.

[0041] S4, the piston 46 is pulled outwards at a speed V by the piston control assembly, a negative pressure is generated in the needle cylinder 41, the gas pressure in the box 13 decreases correspondingly, the value P2 of the gas pressure sensor 120 is recorded, the piston 46 is pushed inwards by the piston control assembly until the piston 46 is reset, the gas pressure in the box 13 returns to the preset value, and whether the difference between P1 and P2 meets the specified value in the attached instructions of the medical manual aspirator is calculated, and one calibration is completed.

[0042] The piston 46 is pulled and pushed at different speeds for multiple times, the gas pressure in the box 13 changes correspondingly, whether the negative pressure generated in the needle cylinder 41 after the piston 46 is pulled at different speeds is qualified is judged, and the calibration of the medical manual aspirator can be accurately completed. The elastic expansion ring 111 can meet the sealing requirements of connectors 42 with various diameters. The box 13 can also be vacuumized for cleaning to prevent impurities from entering the needle cylinder 41 during detection.

[0043] When the medical manual aspirator is detected, the on-off valve 113 is opened, the gas in the gas guide ring 110 and the elastic expansion ring 111 is discharged, the elastic expansion ring 111 is contracted, the connector 42 is separated from the air hole 119, the box 13 is connected with the outside through the air hole 119, and the gas pressure in the box 13 returns.

[0044] The box 13 is further provided with an air hole II, and a on-off valve III 121 is mounted on the air hole II. The box 13 can be connected with the outside through the air hole II by controlling the on-off valve III 121 to open, so as to reduce the deformation of the elastic expansion ring 111.

[0045] The air guide block 112 is further fixed with an air pressure sensor II 114 for detecting the air pressure in the air guide block 112. Whether the sealing between the elastic expansion ring 111 and the connecting head 42 meets the requirements can be judged by the detection value of the air pressure sensor II 114.

[0046] Embodiment 2

[0047] On the basis of embodiment 1, the following improvements are made in this embodiment.

[0048] The needle cylinder clamping assembly comprises a clamping seat I 21, a clamping seat II 213, a connecting beam 215 and a telescopic cylinder III 218. The clamping seat I 21 is fixed, and the upper surface of the clamping seat I 21 is provided with an arc-shaped groove I 22. The clamping seat II 213 is located above the clamping seat I 21, and the lower surface of the clamping seat II 213 is provided with an arc-shaped groove II 214. The connecting beam 215 vertically penetrates through the clamping seat I 21, and the top end is connected with the clamping seat II 213. The telescopic cylinder III 218 drives the connecting beam 215 to move up and down vertically to the clamping seat I 21, so that the distance between the clamping seat II 213 and the clamping seat I 21 is variable, and the clamping and fixing of the needle cylinder 41 with different outer diameters are realized. The arc-shaped groove can fit the outside of the circular needle cylinder 41, so that the clamping is stable.

[0049] The needle cylinder clamping assembly further comprises a positioning plate 216, a displacement sensor 219 and a pressure sensor 220. The positioning plate 216 is vertically connected with the connecting beam 215. The displacement sensor 219 is fixed on the clamping seat I 21 for detecting the distance between the clamping seat I 21 and the positioning plate 216. The pressure sensor 220 is used for detecting the pressure of the telescopic cylinder III 218. The diameter of the needle cylinder 41 clamped and fixed by the clamping seat II 213 and the clamping seat I 21 can be calculated through the detection result of the displacement sensor 219. When the clamping seat II 213 is lowered to fit the needle cylinder 41, the lowering of the clamping seat II 213 is limited, the extension of the telescopic cylinder III 218 is limited, the internal pressure of the telescopic cylinder III 218 is increased, the pressure sensor 220 detects the change of the internal pressure of the telescopic cylinder III 218, and the telescopic cylinder III 218 stops working when the preset value is reached. The pressure of the needle cylinder 41 can be accurately controlled, the deformation of the needle cylinder 41 caused by excessive force can be avoided, and the possibility of damage and scrapping of the medical manual aspirator in the calibration process can be reduced.

[0050] The piston control assembly comprises a moving frame II 23, a telescopic rod II 24, a telescopic cylinder IV 25, a limiting rod 26, a limiting plate I 27, a plug-in rod 28, a limiting plate II 29, a threaded rod 210 and a nut base 211. The fixed ends of the telescopic cylinder IV 25 and the telescopic rod II 24 are connected with the clamping seat I 21, and the telescopic ends are connected with the moving frame II 23. Two limiting rods 26 are vertically fixed on the moving frame II 23, and a plug-in rod 28 is vertically arranged on each limiting rod 26. The limiting plate I 27 is connected with the first ends of the two plug-in rods 28. The limiting plate II 29 is connected with the second ends of the two plug-in rods 28. The nut base 211 is fixed on the moving frame II 23. The threaded rod 210 passes through the nut base 211. The first end of the threaded rod 210 is rotatably connected with the limiting plate II 29. The second end of the threaded rod 210 is provided with a hand wheel 212.

[0051] When the medical manual suction device is placed, the operating handle 47 is adjusted to be between the limiting rod 26 and the limiting plate II 29. The hand wheel 212 is rotated to push the limiting plate II 29 to move forward. Finally, the limiting plate II 29 is in contact with the operating handle 47. The limiting plate II 29 is clamped and fixed with the operating handle 47 in cooperation with the limiting rod 26. The hand wheel 212 is stopped to rotate, so that the position of the operating handle 47 can be controlled by the piston control assembly. The telescopic cylinder IV 25 is telescoped to push the piston 46 to move relative to the needle cylinder 41.

[0052] The detection support mechanism further comprises a workbench 11. The workbench 11 is supported by a plurality of support legs 12. The clamping seat I 21 is fixed on the workbench 11. The box body 13 and the piston control assembly are located on both sides of the clamping seat I 21.

[0053] A limiting groove 14 is formed on the workbench 11. The limiting groove 14 and the piston control assembly are located on both sides of the clamping seat I 21. The detection support mechanism further comprises a position control assembly. The position control assembly comprises a telescopic cylinder I 15, a moving frame I 16, a telescopic rod I 17 and a telescopic cylinder II 18. The moving frame I 16 is slidably connected with the limiting groove 14. The telescopic cylinder I 15 is connected with the workbench 11 and the moving frame I 16 at both ends. The box body 13 is located above the moving frame I 16. The box body 13 and the moving frame I 16 are connected by the telescopic rod I 17 and the telescopic cylinder II 18.

[0054] According to the detection result of the displacement sensor 219, the diameter of the needle cylinder 41 is determined. After the central axis of the air hole I 19 is aligned with the central axis of the needle cylinder 41, the telescopic cylinder II 18 is controlled to move the box body 13 up and down. The telescopic cylinder I 15 is controlled to contract to make the air hole I 19 be sleeved outside the connecting head 42.

[0055] The number of the connecting beams 215 is two; both of the connecting beams 215 vertically pass through the clamping seat 121 and the workbench 11, and the bottom ends are connected through the connecting plate 217; the two ends of the telescopic cylinder III 218 are connected with the workbench 11 and the connecting plate 217 respectively; the two ends of the positioning plate 216 are connected with the two connecting beams 215 respectively; the clamping seat 121 is provided with a mounting groove 221, and the pressure sensor 220 is fixed in the mounting groove 221.

[0056] The medical manual aspirator calibration device provided in the embodiment further comprises a controller 3 fixed on the workbench 11, and the controller 3 is provided with a display screen and an operation panel; the on-off valve I 113, the air pressure sensor II 114, the three-way valve 116, the vacuum pump 117, the on-off valve II 119, the air pressure sensor I 120, the on-off valve III 121, the telescopic cylinder III 218, the displacement sensor 219, the pressure sensor 220, the telescopic cylinder IV 25, the telescopic cylinder I 15 and the telescopic cylinder II 18 are connected with the controller 3.

[0057] In the embodiment, the telescopic cylinder I 15, the telescopic cylinder II 18 and the telescopic cylinder IV 25 are all air cylinders, the telescopic cylinder III 218 is a hydraulic cylinder, and the on-off valve I 113, the three-way valve 116, the on-off valve II 119 and the on-off valve III 121 are all electromagnetic valves.

[0058] The medical manual aspirator calibration process provided in the embodiment is as follows:

[0059] S1, a plugging piece 44 is installed outside the waste liquid collecting pipe 43 to seal the waste liquid collecting pipe 43, so that the medical manual aspirator can only communicate with the outside through the connecting head 42, and the first end of the piston 46 is pressed against the needle cylinder 41;

[0060] S2, the medical manual aspirator is placed in the arc-shaped groove I 222, the operation handle 47 is adjusted to be between the limiting rod 26 and the limiting plate II 29, and the piston control assembly fixes the operation handle 47;

[0061] S3, the controller 3 controls the telescopic cylinder III 218 to contract, the arc-shaped groove II 214 is attached to the needle cylinder 41, the pressure sensor 220 detects the hydraulic pressure change in the telescopic cylinder III 218, the displacement sensor 219 detects the distance between the clamping seat 121 and the positioning plate 216, the detection values of the pressure sensor 220 and the displacement sensor 219 are fed back to the controller 3, and the detection value of the pressure sensor 220 reaches a preset value, then the controller 3 controls the telescopic cylinder III 218 to stop working, and the diameter of the needle cylinder 41 is calculated through the detection value of the displacement sensor 219;

[0062] S4, according to the diameter of the needle cylinder 41, the controller 3 controls the telescopic cylinder II 18 to align the central axis of the air hole I 119 with the central axis of the needle cylinder 41, and then controls the telescopic cylinder I 15 to make the air hole I 119 be sleeved outside the connecting head 42;

[0063] S5, the controller 3 controls the vacuum pump 117 start, open on-off valve II 119, three-way valve 116 of the normally closed exhaust port, close on-off valve I 113, air pressure sensor II 114 detects the air pressure inside the guide block 112 and the detection value feedback to the controller 3, reach the preset value, the controller 3 closes the normally closed exhaust port of three-way valve 116, open normally open exhaust port, vacuum pump 117 continue to work, air pressure sensor I 120 detects the air pressure in the box 13 reaches the preset value P1, vacuum pump 117 stop, close on-off valve II 119;

[0064] S6, through the piston control assembly to the outside of the piston 46 with speed V, make needle cylinder 41 inside the negative pressure, the air pressure in the box 13 inside the corresponding decrease, record the value of air pressure sensor I 120 P2, through the piston control assembly to the inside of the piston 46, until the piston 46 reset, the air pressure in the box 13 to the preset value, calculate the difference between P1 and P2 whether to meet the medical manual aspirator attached to the specification value, complete a calibration.

[0065] Finally, it should be noted that: the above examples are used to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still be modified to the technical solutions recorded in the foregoing examples, or part or all of the technical features are replaced by the equivalent; and these modifications or replacements, do not make the essence of the corresponding technical solutions deviate from the scope of the embodiments of the present application technical solutions.

Claims

1. A medical manual suction device calibration device, characterized in that: It includes a detection support mechanism and a clamping and positioning control mechanism; The detection support mechanism comprises a box (13), a connector clamping assembly and an air pressure sensor I (120); The clamping and positioning control mechanism includes a syringe clamping assembly and a piston positioning control assembly; The syringe clamping assembly is used to clamp and fix the syringe (41) of a medical manual aspirator; The piston position control assembly is used to fix the piston (46) of the medical manual aspirator and to push the piston (46) to move relative to the syringe (41) at different speeds; The box body (13) is provided with an air hole I (19), and the air hole I (19) is used to connect to the connector (42) of the medical manual suction device; The connector clamping assembly includes an air guide ring (110), an elastic expansion ring (111), an air guide block (112), an on-off valve I (113), an air guide pipe I (115), a three-way valve (116), a vacuum pump (117), an air guide pipe II (118), and an on-off valve II (119); The air guide ring (110) is fixed outside the box (13) and surrounds the outside of the air hole I (19); The elastic expansion ring (111) is fixed on the inner wall of the air guide ring (110) and is in communication with the air guide ring (110). The elastic expansion ring (111) expands and wraps around the outer side of the connector (42), so that the connector (42) and the elastic expansion ring (111) are sealed. The air guide block (112) is fixed on the outer wall of the air guide ring (110) and is in communication with the air guide ring (110); The on-off valve I (113) is fixed on the air guide block (112); The three-way valve (116) and the vacuum pump (117) are fixed outside the box (13); The three-way valve (116) is provided with an air inlet, a normally open exhaust port, and a normally closed exhaust port. The air inlet is connected to the exhaust port of the vacuum pump (117), and the normally closed exhaust port is connected to the air guide block (112) via the air guide pipe I (115). The air guide pipe II (118) passes through the box body (13), and an on-off valve II (119) is fixed to the end portion located inside the box body (13), and the end portion located outside the box body (13) is connected to the air inlet of the vacuum pump (117); The air pressure sensor I (120) is used to detect the air pressure in the box (13).

2. The medical manual suction device calibration device according to claim 1, characterized in that: The box body (13) is also provided with an air hole II, and an on-off valve III (121) is installed on the air hole II; An air pressure sensor II (114) is also fixed on the air guide block (112).

3. The medical manual suction device calibration device according to claim 1, characterized in that: The syringe clamping assembly includes a clamping seat I (21), a clamping seat II (213), a connecting beam (215) and a telescopic cylinder III (218); The clamping seat I (21) is fixed, and an arc-shaped groove I (22) is provided on the upper surface of the clamping seat I (21); The clamping seat II (213) is located above the clamping seat I (21), and an arc groove II (214) is provided on the lower surface of the clamping seat II (213); The connecting beam (215) vertically passes through the clamping seat I (21), and the top end is connected to the clamping seat II (213); The telescopic cylinder III (218) drives the connecting beam (215) to move up and down perpendicular to the clamping seat I (21).

4. The medical manual suction device calibration device according to claim 3, characterized in that: The syringe clamping assembly further includes a positioning plate (216), a displacement sensor (219) and a pressure sensor (220); The positioning plate (216) is vertically connected to the connecting beam (215); The displacement sensor (219) is fixed on the clamping seat I (21) and is used to detect the distance between the clamping seat I (21) and the positioning plate (216); The pressure sensor (220) is used to detect the pressure of the telescopic cylinder III (218).

5. The medical manual aspirator calibration device according to claim 3 or 4, characterized in that: The piston position control assembly includes a motion frame II (23), a telescopic cylinder IV (25), a limit rod (26), a limit plate I (27), a plug rod (28), a limit plate II (29), a threaded rod (210) and a nut seat (211); The moving frame II (23) and the clamping seat I (21) are connected via a telescopic cylinder IV (25); Two limiting rods (26) are vertically fixed on the motion frame II (23), and each limiting rod (26) is vertically penetrated by a plug-in rod (28); The limiting plate I (27) is connected to the first ends of the two connecting rods (28); The limiting plate II (29) is connected to the second ends of the two connecting rods (28); The nut seat (211) is fixed on the motion frame II (23); The threaded rod (210) passes through the nut seat (211), and the first end of the threaded rod (210) is rotatably connected to the limit plate II (29).

6. The medical manual suction device calibration device according to claim 5, characterized in that: The piston control assembly also includes a telescopic rod II (24); The fixed ends of the telescopic cylinder IV (25) and the telescopic rod II (24) are connected to the clamping seat I (21), and the telescopic ends are connected to the moving frame II (23); A hand wheel (212) is mounted on the second end of the threaded rod (210).

7. The medical manual suction device calibration device according to claim 6, characterized in that: The detection support mechanism also includes a workbench (11); The clamping seat I (21) is fixed on the workbench (11), and the box body (13) and the piston position control assembly are located on both sides of the clamping seat I (21).

8. The medical manual aspirator calibration device according to claim 7, characterized in that: A limit groove (14) is provided on the workbench (11); The limiting groove (14) and the piston position control assembly are located on both sides of the clamping seat I (21); The detection support mechanism also includes a position control component; The position control assembly includes a telescopic cylinder I (15), a motion frame I (16), a telescopic rod I (17) and a telescopic cylinder II (18); The moving frame I (16) is slidably connected to the limiting groove (14); The two ends of the telescopic cylinder I (15) are respectively connected to the workbench (11) and the motion frame I (16); The box (13) is located above the motion frame I (16), and the box (13) and the motion frame I (16) are connected via a telescopic rod I (17) and a telescopic cylinder II (18).

9. The medical manual suction device calibration device according to claim 8, characterized in that: The number of connecting beams (215) is two; The two connecting beams (215) vertically pass through the clamping seat I (21) and the workbench (11), and the bottom ends are connected by a connecting plate (217); The two ends of the telescopic cylinder III (218) are respectively connected to the workbench (11) and the connecting plate (217); Both ends of the positioning plate (216) are respectively connected to the two connecting beams (215); The clamping seat I (21) is provided with a mounting groove (221), and the pressure sensor (220) is fixed in the mounting groove (221).

10. The medical manual suction device calibration device according to claim 9, characterized in that: Also included is a controller (3); The controller (3) is fixed on the workbench (11), and a display screen and an operation panel are provided on the controller (3); The on-off valve I (113), the air pressure sensor II (114), the three-way valve (116), the vacuum pump (117), the on-off valve II (119), the air pressure sensor I (120), the on-off valve III (121), the telescopic cylinder III (218), the displacement sensor (219), the pressure sensor (220), the telescopic cylinder IV (25), the telescopic cylinder I (15), and the telescopic cylinder II (18) are all connected to the controller (3); The workbench (11) is supported by a plurality of support legs (12).

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