Medical pipeline air tightness detection device and detection method

Abstract

A medical pipeline air tightness detection device and a detection method thereof, comprising a detection frame, a supporting mechanism is provided on the outer side of the detection frame, the medical pipeline is loaded through the supporting mechanism, a moving mechanism is slidably connected to the upper side of the bottom end of the detection frame, a pushing detection mechanism is slidably connected to the upper side of the moving mechanism, a lower aligning position is provided on the end of the moving mechanism close to the supporting mechanism, and an upper aligning position is provided on the top side of the detection frame close to the supporting mechanism. The lower aligning position and the upper aligning position are used in combination to align the medical pipeline. The device solves the technical problems of low detection efficiency, low detection accuracy and high product damage rate caused by defects in the structure and usage method of the existing medical pipeline air tightness detection device, and can be widely used in the field of medical device processing technology.

Description

Technical Field

[0001] The present invention relates to the technical field of medical device processing, and in particular to a medical pipeline air tightness detection device and a detection method thereof. Background Art

[0002] With the improvement of social living standards, disposable medical consumables such as infusion sets, blood collection needles, and indwelling needles have been widely used in clinical practice. Infusion sets, blood collection needles, and indwelling needles are all medical pipelines. During the production process of medical pipelines, in order to ensure the normal use of medical pipelines, prevent external air from entering the human body through medical pipelines, and avoid leakage of liquid medicine, blood, etc., medical pipelines need to be tested for air tightness.

[0003] In the prior art, the pressure method is usually used to test the air tightness of medical tubing, that is, one end of the medical tubing is connected to the trachea, the other end of the medical tubing is clamped or blocked, and air is inflated into the medical tubing through the trachea. The air tightness of the medical tubing is judged by observing whether the value of the pressure gauge changes or whether bubbles appear around the medical tubing. A Chinese patent with the announcement number CN114964639B discloses a gas measurement and detection device for an infusion catheter, which includes a box, a test mechanism, a pressurized docking assembly, a connection unit, an adjustment mechanism, a water pump module, an air pump module and a controller, and realizes underwater automated air tightness detection of the infusion tube. The degree of automation is high and the operation is simpler. It can simulate the air tightness test of the infusion tube in different states, making the quality detection of the infusion tube more accurate. However, this detection device has the following defects: first, the device rotates the connecting tube to insert it into the inner cavity of the infusion tube, and increases the insertion force to make the connecting tube and the infusion tube inserted deeper. , that is, the connecting tube and the infusion tube are connected by extrusion. This extrusion connection method can easily damage the medical tube, and the components of the medical tube are easily squeezed during the extrusion connection process. It is impossible to detect leakage problems caused by loose bonding of the components of the medical tube, and the detection effect is poor; secondly, the device uses a visual module to observe whether there are bubbles in the water tank to determine whether the infusion tube has leakage during underwater ventilation. This method is likely to fail to detect minor leakage problems, resulting in low detection accuracy and low product qualification rate; thirdly, the number of single detections of the device is limited, and the detection efficiency is low.

[0004] Based on the above situation, the present application invents a medical pipeline air tightness detection device and a detection method thereof with high detection efficiency, high detection accuracy and low product damage rate. Summary of the Invention

[0005] The purpose of this application is to provide a medical pipeline air tightness detection device and a detection method thereof, aiming to solve the technical problems of the existing medical pipeline air tightness detection device due to its defects in structure and usage method, resulting in low detection efficiency, low detection accuracy and high product damage rate.

[0006] An embodiment of the present application provides a medical pipeline air tightness detection device, including a detection frame, a material supporting mechanism is provided on the outer side of the detection frame, and the medical pipeline is loaded through the material supporting mechanism. A moving mechanism is slidably connected to the upper side of the bottom end of the detection frame, and a pushing detection mechanism is slidably connected to the upper side of the moving mechanism. A lower aligning position is provided on the end of the moving mechanism close to the material supporting mechanism, and an upper aligning position is provided on the top of the detection frame close to the side of the material supporting mechanism. The lower aligning position and the upper aligning position are used in combination to align the medical pipeline.

[0007] In one embodiment, the material supporting mechanism is provided with a material supporting base plate, the material supporting base plate is arranged on the outer side of the detection frame, a first cylinder is provided on the material supporting base plate, the piston rod of the first cylinder is connected to a lifting cylinder seat plate, the first cylinder drives the lifting cylinder seat plate to move forward and backward, a lifting cylinder is provided on the lifting cylinder seat plate, the piston rod of the lifting cylinder is connected to a material supporting shaft fixing plate, the lifting cylinder drives the material supporting shaft fixing plate to move up and down, a connecting vertical plate is provided on the material supporting shaft fixing plate, a horizontally arranged material supporting shaft is rotatably connected on the connecting vertical plate, a plurality of coaxially arranged annular grooves are provided on the material supporting shaft, and the medical pipeline is placed in the annular groove.

[0008] In one embodiment, the detection frame is a bracket structure consisting of a base plate, a vertical plate and a top plate, the base plate is symmetrically provided with a first slide rail, the moving mechanism is provided on the first slide rail, the moving mechanism is provided with a moving base plate, the moving base plate is slidingly connected to the first slide rail, and a second cylinder is also provided on the base plate, the piston rod of the second cylinder is connected to the moving base plate, and the second cylinder drives the moving base plate to move forward and backward.

[0009] In one embodiment, a second slide rail parallel to the first slide rail is symmetrically provided on the movable base plate, the push material detection mechanism is provided on the second slide rail, the push material detection mechanism is provided with a detection base plate, the detection base plate is slidingly connected to the second slide rail, and a third cylinder is also provided on the movable base plate, the piston rod of the third cylinder is connected to the detection base plate, and the third cylinder drives the detection base plate to move forward and backward.

[0010] In one embodiment, the detection base plate is provided with a detection support plate, and the detection support plate is provided with a detection vertical plate at one end near the supporting mechanism, the detection vertical plate is provided with a detection fixing plate, the detection fixing plate is provided with a detection fixing vertical plate, and the detection fixing vertical plate is provided with a number of detection shaft seats arranged side by side, the detection shaft seat is arranged horizontally, and an axial through hole with a T-shaped cross section is provided in the detection shaft seat, the diameter of the end of the axial through hole near the supporting mechanism is smaller than the diameter of the end away from the supporting mechanism, a silicone head is provided in the axial through hole, and a clamping shaft is provided on the other side of the silicone head, the diameters of the silicone head and the clamping shaft are both larger than the diameter of the end of the axial through hole near the supporting mechanism, and a number of clamping cylinders with the same number as the detection shaft seats are provided on the detection fixing plate, the piston rod of the clamping cylinder is connected to the clamping shaft, and the clamping cylinder drives the silicone head to move back and forth along the axial through hole via the clamping shaft.

[0011] In one embodiment, the movable base plate is provided with a pressure reducing valve seat plate, and the pressure reducing valve seat plate is provided with several pressure reducing valves, and the pressure reducing valves are connected to the air source through an air pipe; the detection base plate is provided with a solenoid valve support plate at one end away from the supporting mechanism, and the solenoid valve support plate is provided with a solenoid valve seat plate, and the solenoid valve seat plate is provided with several solenoid valves; the detection support plate is provided with a pressure switch support plate at one end away from the supporting mechanism, and the pressure switch support plate is provided with several analog pressure switches, and the number of the pressure reducing valve, the solenoid valve, and the analog pressure switches is the same as the number of the detection shaft seat; a side hole is provided on the side of the detection shaft seat, and an air inlet is provided on the side of the clamping shaft, and the side hole corresponds to the air inlet; an air outlet is provided on the end of the clamping shaft close to the silicone head, and the air inlet is connected to the air outlet; a blowing hole is provided on the silicone head, and the blowing hole is connected to the air outlet, and the pressure reducing valve, the solenoid valve, the analog pressure switch and the air inlet are connected in sequence through an air pipe.

[0012] In one of the embodiments, the lower alignment is provided with a lower alignment bracket consisting of an alignment bottom plate, an alignment vertical plate and an alignment top plate. The lower alignment bracket is provided on one end of the movable bottom plate close to the supporting mechanism. The alignment top plate is provided with a lower alignment cylinder. The piston rod of the lower alignment cylinder is connected with a lower alignment cylinder connecting plate. The lower alignment cylinder connecting plate is located above the alignment top plate. A lower alignment tube plate is provided at the top of the lower alignment cylinder connecting plate. The lower alignment cylinder drives the lower alignment tube plate to move up and down. The top of the lower alignment tube plate is provided with a plurality of lower grooves arranged side by side.

[0013] In one embodiment, the upper positioning is provided with an upper positioning cylinder arranged opposite to the lower positioning cylinder, the upper positioning cylinder is arranged on the top plate, the piston rod of the upper positioning cylinder is connected with an upper positioning cylinder connecting plate, the upper positioning cylinder connecting plate is located below the top plate, the bottom end of the upper positioning cylinder connecting plate is provided with an upper positioning tube plate, the upper positioning cylinder drives the upper positioning tube plate to move up and down, and the bottom end of the upper positioning tube plate is provided with a number of upper grooves arranged side by side with the same number as the lower grooves; the lower positioning cylinder and the upper positioning cylinder simultaneously drive the lower positioning tube plate and the upper positioning tube plate to move toward each other, thereby clamping and positioning the medical pipeline.

[0014] In one embodiment, a press rod fixing block is symmetrically provided on one side of the top plate close to the material supporting mechanism, a press vertical rod is provided on the press rod fixing block, a horizontally arranged press rod is provided at the bottom end of the press vertical rod, and the press rod is located on the outside of the material supporting shaft; an equipment warning light is also provided on the top plate.

[0015] A second aspect of the embodiments of the present application provides a method for detecting an airtightness detection device for a medical pipeline, comprising the following steps:

[0016] (1) The first cylinder drives the supporting shaft to move backward, and the lifting cylinder drives the supporting shaft to move upward, adjusting the horizontal and vertical positions of the medical tube on the supporting shaft so that the medical tube is flush with the detection shaft seat;

[0017] (2) The second cylinder drives the lower positioning and pushing detection mechanism to move forward to its position, so that the lower positioning reaches directly below the upper positioning. The lower positioning cylinder and the upper positioning cylinder simultaneously drive the lower and upper tube plates to move toward each other, clamping and positioning the medical tube so that the port of the medical tube is flush with the detection shaft seat;

[0018] (3) The third air cylinder drives the pushing detection mechanism to continue moving forward to its position, and the pressing cylinder drives the silicone head to move forward to wrap the port of the medical tube, and then the solenoid valve is opened to control the gas to enter. The gas provided by the gas source is sequentially passed through the pressure reducing valve, the solenoid valve, the analog pressure switch, the air inlet, the air outlet and the air blowing hole into the medical tube. When the pressure value inside the medical tube reaches the set value, the ventilation is stopped and the pressure is maintained for about 3 seconds. The pressure value change is calculated according to the pressure value fed back by the analog pressure switch, and then the air tightness of the medical tube is judged according to the pressure value change;

[0019] (4) After the air tightness test is completed, each component returns to its initial position and the next air tightness test is carried out.

[0020] The present application provides a medical pipeline air tightness detection device and a detection method thereof, the beneficial effects of which are: under the coordinated actions of the supporting mechanism, the moving mechanism, the pushing detection mechanism, the lower positioning and the upper positioning, the present application detects the air tightness of the medical pipeline by a wrapping and sealing method, and the detection result is accurate, the detection precision is high, and the detection efficiency is high; by arranging a silicone head made of soft material on the pushing detection mechanism, the port of the medical pipeline is wrapped and sealed, ensuring a good sealing effect while avoiding damage to the medical pipeline, compared with the traditional extrusion type sealing The method adopts a wrapping sealing method to accurately detect air leakage problems caused by loose bonding of components of medical pipelines, and the detection results are accurate; by adopting the change in pressure value to judge the air tightness of medical pipelines, materials with slight air leakage can be detected, thereby improving the detection accuracy and ensuring the qualified rate of products; by detecting multiple medical pipelines at a time, the detection efficiency is improved; the invention has a simple structure, is easy to operate, has high detection efficiency, high detection accuracy, accurate detection results, high product qualified rate, and low product damage rate, which is conducive to realizing the automation, intelligence and industrialization of medical device enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of a medical pipeline air tightness detection device provided in Example 1 of the present application;

[0022] Figure 2 for Figure 1 A left side view of a medical pipeline air tightness detection device shown;

[0023] Figure 3 for Figure 1 A schematic diagram of the explosion structure of a material supporting mechanism of a medical pipeline air tightness detection device is shown;

[0024] Figure 4 for Figure 1 A schematic structural diagram of a detection frame of a medical pipeline air tightness detection device is shown;

[0025] Figure 5 for Figure 1 A schematic structural diagram of a moving mechanism of a medical pipeline air tightness detection device is shown;

[0026] Figure 6 for Figure 1 A schematic diagram of the explosion structure of a material pushing detection mechanism of a medical pipeline air tightness detection device is shown;

[0027] Figure 7 for Figure 1 A schematic diagram of the explosion structure of a detection shaft seat and a compression cylinder of a medical pipeline air tightness detection device is shown;

[0028] Figure 8 for Figure 1A schematic diagram of the explosion-amplified structure of a detection shaft seat of a medical pipeline air tightness detection device is shown;

[0029] Figure 9 for Figure 1 A schematic diagram of the explosion structure of a medical pipeline air tightness detection device in the lower upright position is shown;

[0030] Figure 10 for Figure 1 The figure shows a schematic diagram of the explosion structure of a medical pipeline air tightness detection device in the upper right position.

[0031] Explanation of symbols in the figure:

[0032] 1. Detection frame; 101. Bottom plate; 102. Vertical plate; 103. Top plate; 104. First slide rail; 105. Second cylinder; 106. First travel limit block; 107. Second travel limit block; 108. Press rod fixing block; 109. Press rod; 110. Press rod; 111. Equipment warning light;

[0033] 2. Material support mechanism; 201. Material support base plate; 202. First cylinder; 203. Cylinder shield; 204. Cylinder guide shaft; 205. Lifting cylinder base plate; 206. Lifting cylinder; 207. Material support shaft fixing plate; 208. Connecting vertical plate; 209. Material support shaft; 210. Annular groove;

[0034] 3. Moving mechanism; 301. Moving base plate; 302. Second slide rail; 303. Third cylinder; 304. Pressure reducing valve seat plate; 305. Pressure reducing valve;

[0035] 4. Pusher detection mechanism; 401. Detection base plate; 402. Detection support plate; 403. Detection vertical plate; 404. Detection fixed plate; 405. Detection fixed vertical plate; 406. Detection shaft seat; 407. Axial through hole; 408. Side hole; 409. Silicone head; 410. Blowing hole; 411. Clamping shaft; 412. Air inlet; 413. Air outlet; 414. Clamping cylinder; 415. Solenoid valve support plate; 416. Solenoid valve seat plate; 417. Solenoid valve; 418. Pressure switch support plate; 419. Analog pressure switch;

[0036] 5. Lower alignment; 501. Lower alignment bracket; 502. Alignment base plate; 503. Alignment vertical plate; 504. Alignment top plate; 505. Lower alignment cylinder; 506. Lower alignment cylinder connecting plate; 507. Lower alignment tube plate; 508. Lower groove; 509. Lower alignment guide shaft; 510. Detection limit block;

[0037] 6. Upper alignment; 601. Upper alignment cylinder; 602. Upper alignment cylinder connecting plate; 603. Upper alignment tube plate; 604. Upper groove; 605. Upper alignment guide shaft; 606. Upper alignment limit plate. DETAILED DESCRIPTION

[0038] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0039] It should be noted that the terms "upper," "lower," "left," "right," "front," "back," "inner," "outer," "top," and "bottom" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used solely to facilitate and simplify the description of the present invention. They should not be construed as indicating or implying that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely for distinction and description and should not be construed as indicating or implying relative importance.

[0040] Example 1

[0041] See also Figure 1 , is a schematic diagram of the structure of a medical pipeline air tightness detection device provided in Example 1 of the present application. For ease of explanation, only the parts related to this embodiment are shown, which are detailed as follows:

[0042] In one embodiment, please combine Figure 2 A medical pipeline air tightness detection device is used to detect the air tightness of medical pipelines, including a detection frame 1, a supporting mechanism 2, a moving mechanism 3, a pushing detection mechanism 4, a lower alignment 5 and an upper alignment 6. The supporting mechanism 2 is set on the outside of the detection frame 1, and the medical pipeline is loaded through the supporting mechanism 2. The upper side of the bottom end of the detection frame 1 is slidably connected to the moving mechanism 3, and the moving mechanism 3 moves back and forth on the upper side of the bottom end of the detection frame 1. The pushing detection mechanism 4 is slidably connected to the moving mechanism 3, and the pushing detection mechanism 4 moves back and forth on the moving mechanism 3. The lower alignment 5 is set on the end of the moving mechanism 3 close to the supporting mechanism 2. The top of the detection frame 1 An upper alignment 6 is provided on one side close to the supporting mechanism 2, and the lower alignment 5 and the upper alignment 6 are used together to align the medical tubing; the supporting mechanism 2 loads the medical tubing, and then the moving mechanism 3 moves forward along the upper side of the bottom end of the detection frame 1, driving the lower alignment 5 and the pushing detection mechanism 4 to move forward, and moving the lower alignment 5 to directly below the upper alignment 6, and the lower alignment 5 and the upper alignment 6 are used together to clamp and align the medical tubing, and then the pushing detection mechanism 4 continues to move forward along the moving mechanism 3, wraps the port of the medical tubing, and then ventilates the medical tubing and determines its airtightness, thereby realizing the airtightness detection of the medical tubing.

[0043] Specifically, please combine Figure 3The supporting mechanism 2 is provided with a supporting base plate 201, which is arranged on the outside of the detection frame 1. A first cylinder 202 is provided on the supporting base plate 201, and a cylinder shield 203 is provided on the outside of the first cylinder 202 for protecting the first cylinder 202. A vertically arranged lifting cylinder seat plate 205 is connected to the piston rod of the first cylinder 202. The first cylinder 202 drives the lifting cylinder seat plate 205 to move back and forth. The rear end of the lifting cylinder seat plate 205 is symmetrically provided with a cylinder guide shaft 204, which is slidably connected to the supporting base plate 201. The cylinder guide shaft 204 is connected to the supporting base plate 201. It serves as a guide for the first cylinder 202; a lifting cylinder 206 is provided on the lifting cylinder base plate 205, and a horizontally arranged supporting shaft fixing plate 207 is connected to the piston rod of the lifting cylinder 206, and the supporting shaft fixing plate 207 is arranged above the lifting cylinder 206. The lifting cylinder 206 drives the supporting shaft fixing plate 207 to move up and down, and the supporting shaft fixing plate 207 is symmetrically provided with connecting vertical plates 208, and the connecting vertical plates 208 are rotatably connected to a horizontally arranged supporting shaft 209, and the supporting shaft 209 is provided with several coaxially arranged annular grooves 210, and the medical pipeline is placed in the annular groove 210.

[0044] Please combine Figure 4 The detection frame 1 is a bracket structure consisting of a base plate 101, a vertical plate 102 and a top plate 103. A pressing rod fixing block 108 is symmetrically provided on one side of the top plate 103 close to the supporting mechanism 2. A pressing vertical rod 109 is provided on the pressing rod fixing block 108. A horizontal pressing rod 110 is provided at the bottom end of the pressing vertical rod 109. The pressing rod 110 is located on the outside of the supporting shaft 209. The pressing rod 110 acts on the medical pipeline to prevent the medical pipeline from slipping off the supporting shaft 209.

[0045] Please combine Figure 4 and Figure 5 A first slide rail 104 is symmetrically provided on the base plate 101, and the moving mechanism 3 is arranged on the first slide rail 104. The moving mechanism 3 is provided with a moving base plate 301, and the moving base plate 301 is slidably connected to the first slide rail 104. A second cylinder 105 is provided on the base plate 101, and the second cylinder 105 is arranged on the rear side of the moving base plate 301. The piston rod of the second cylinder 105 is connected to the moving base plate 301, and the second cylinder 105 drives the moving base plate 301 to move back and forth; the base plate 101 is also provided with a first moving limit block 106 and a second moving limit block 107, and the second moving limit block 107 and the first moving limit block 106 are respectively arranged on the front and rear sides of the moving base plate 301, which play a role in limiting the moving base plate 301.

[0046] Please combine Figure 5 and Figure 6A second slide rail 302 is symmetrically provided on the movable base plate 301, and the second slide rail 302 is arranged parallel to the first slide rail 104. The pushing detection mechanism 4 is arranged on the second slide rail 302, and the pushing detection mechanism 4 is provided with a detection base plate 401, which is slidingly connected to the second slide rail 302. A third cylinder 303 is also provided on the movable base plate 301, and the third cylinder 303 is arranged on the rear side of the detection base plate 401. The piston rod of the third cylinder 303 is connected to the detection base plate 401, and the third cylinder 303 drives the detection base plate 401 to move forward and backward.

[0047] Please combine Figure 5-Figure 8 , a detection support plate 402 is symmetrically provided on the detection bottom plate 401, and the detection support plate 402 is arranged parallel to the second slide rail 302. A detection vertical plate 403 is provided on the detection support plate 402 at one end close to the supporting mechanism 2, and a detection fixed plate 404 is provided on the detection vertical plate 403. A detection fixed vertical plate 405 is provided on the detection fixed plate 404. A plurality of detection shaft seats 406 arranged side by side are provided on the detection fixed vertical plate 405. The detection shaft seat 406 is arranged horizontally and parallel to the second slide rail 302. An axial through hole 407 with a T-shaped cross section is provided in the detection shaft seat 406. The diameter of the axial through hole 407 at the end close to the supporting mechanism 2 is smaller than that of the detection shaft seat 406. A silicone head 409 is provided in the axial through hole 407 at the diameter of the end away from the supporting mechanism 2, and a clamping shaft 411 is provided on the other side of the silicone head 409. The diameters of the silicone head 409 and the clamping shaft 411 are both larger than the diameter of the end of the axial through hole 407 close to the supporting mechanism 2; a plurality of clamping cylinders 414 with the same number as the detection shaft seat 406 are also provided on the detection fixing plate 404, and the clamping cylinders 414 are arranged on the rear side of the detection shaft seat 406, and the piston rod of the clamping cylinder 414 is connected to the clamping shaft 411, and the clamping cylinder 414 drives the silicone head 409 to move back and forth along the axial through hole 407 via the clamping shaft 411.

[0048] A pressure reducing valve seat plate 304 is provided on the end of the movable base plate 301 away from the supporting mechanism 2. A plurality of pressure reducing valves 305 are provided on the pressure reducing valve seat plate 304. The pressure reducing valves 305 are precision pressure reducing valves connected to the air source via an air pipe. A solenoid valve support plate 415 is provided on the end of the detection base plate 401 away from the supporting mechanism 2. A solenoid valve seat plate 416 is provided on the solenoid valve support plate 415. A plurality of solenoid valves 417 are provided on the solenoid valve seat plate 416. The solenoid valves 417 are one-way two-way solenoid valves. A pressure switch support plate 418 is provided on the end of the detection support plate 402 away from the supporting mechanism 2, and a plurality of analog pressure switches 419 are provided on the pressure switch support plate 418. The number of the pressure reducing valve 305, the solenoid valve 417, and the analog pressure switch 419 is the same as the number of the detection shaft seat 406; a side hole 408 is provided on the side of the detection shaft seat 406, and an air inlet 412 is provided on the side of the pressing shaft 411. The side hole 408 corresponds to the air inlet 412, and the pressing shaft 411 is close to the silicone head. An air outlet 413 is provided at one end of 409, and the air inlet 412 is connected to the air outlet 413. A blowing hole 410 is provided on the silicone head 409, and the blowing hole 410 is connected to the air outlet 413. The pressure reducing valve 305, the solenoid valve 417, and the analog pressure switch 419 are connected to the air inlet 412 in sequence through the trachea. The gas provided by the gas source passes through the pressure reducing valve 305, the solenoid valve 417, the analog pressure switch 419, the air inlet 412, the air outlet 413 and the blowing hole 410 in sequence. The pressure reducing valve 305 is used to control the size of the gas flow rate, and the solenoid valve 417 is used to control the introduction and stop of the gas. The analog pressure switch 419 is electrically connected to the control system. The analog pressure switch 419 is used to detect the pressure value of the gas in the medical pipeline and feed it back to the control system. The control system calculates the pressure value change based on the pressure value fed back by the analog pressure switch 419. The staff judges whether the air tightness of the medical pipeline is qualified based on the pressure value change displayed on the control system.

[0049] Please combine Figure 4-Figure 5 、 Figure 9-10 The lower alignment 5 is provided with a lower alignment bracket 501 consisting of an alignment base plate 502, an alignment vertical plate 503 and an alignment top plate 504. A lower alignment bracket 501 is provided on the movable base plate 301 at one end near the supporting mechanism 2, and a lower alignment cylinder 505 is provided on the alignment top plate 504. The piston rod of the lower alignment cylinder 505 is connected with a lower alignment cylinder connecting plate 506, and the lower alignment cylinder connecting plate 506 is arranged above the alignment top plate 504. The top of the lower alignment cylinder connecting plate 506 is provided with a lower positive tube plate 507, and the lower alignment cylinder 505 drives the lower positive tube plate 507 to move up and down. The top of the lower positive tube plate 507 is provided with a number of lower grooves 508 arranged side by side, and the number of lower grooves 508 is the same as the number of detection shaft seats 406; the bottom end of the lower alignment cylinder connecting plate 506 is symmetrically provided with a lower alignment guide shaft 509, which is slidably connected to the alignment top plate 504 to guide the lower alignment cylinder 505.

[0050] A detection limit block 510 is further provided on the alignment base plate 502 , and the detection limit block 510 is used to limit the detection base plate 401 .

[0051] The upper positioning cylinder 6 is provided with an upper positioning cylinder 601 which is arranged opposite to the lower positioning cylinder 505. The upper positioning cylinder 601 is arranged on the top plate 103. The piston rod of the upper positioning cylinder 601 is connected with an upper positioning cylinder connecting plate 602. The upper positioning cylinder connecting plate 602 is arranged below the top plate 103. The bottom end of the upper positioning cylinder connecting plate 602 is provided with an upper positive tube plate 603. The upper positioning cylinder 601 drives the upper positive tube plate 603 to move up and down. The bottom end of the upper positive tube plate 603 is provided with a plurality of upper grooves 604 arranged side by side with the same number as the lower grooves 508. The lower positioning cylinder 505 and the upper positioning cylinder are connected with the upper positioning cylinder connecting plate 602. The positioning cylinder 601 simultaneously drives the lower positive tube plate 507 and the upper positive tube plate 603 to move toward each other, clamping and aligning the medical tube; the top of the upper positioning cylinder connecting plate 602 is symmetrically provided with an upper positioning guide shaft 605, and the upper positioning guide shaft 605 is slidingly connected to the top plate 103. The upper positioning guide shaft 605 guides the upper positioning cylinder 601, and the top of the upper positioning guide shaft 605 is provided with an upper positioning limit plate 606. The upper positioning limit plate 606 is arranged above the top plate 103, and the upper positioning limit plate 606 limits the piston rod of the upper positioning cylinder 601.

[0052] Please combine Figure 4 An equipment warning light 111 is also provided on the top plate 103. The equipment warning light 111, the first cylinder 202, the lifting cylinder 206, the second cylinder 105, the third cylinder 303, the pressing cylinder 414, the lower positioning cylinder 505 and the upper positioning cylinder 601 are all electrically connected to the control system. The control system detects whether the actions of the above cylinders are in place, and controls the equipment warning light 111 to alarm, reminding the staff to deal with it in time.

[0053] Example 2

[0054] A method for detecting an airtightness detection device for a medical pipeline comprises the following steps:

[0055] (1) The first cylinder 202 drives the supporting shaft 209 to move backward, and the lifting cylinder 206 drives the supporting shaft 209 to move upward, adjusting the horizontal and vertical positions of the medical tube on the supporting shaft 209 so that the medical tube is flush with the detection shaft seat 406.

[0056] Specifically, the medical tubing is placed in the annular groove 210, the first cylinder 202 drives the medical tubing to move backward through the supporting shaft 209, and the lifting cylinder 206 drives the medical tubing to move upward through the supporting shaft 209, and adjusts the horizontal and vertical positions of the medical tubing so that the medical tubing is flush with the detection shaft seat 406. At this time, the pressing rod 110 acts on the medical tubing to prevent the medical tubing from slipping off the supporting shaft 209.

[0057] (2) The second air cylinder 105 drives the lower alignment 5 and the material pushing detection mechanism 4 to move forward to their positions, so that the lower alignment 5 is directly below the upper alignment 6. The lower alignment cylinder 505 and the upper alignment cylinder 601 simultaneously drive the lower alignment tube plate 507 and the upper alignment tube plate 603 to move toward each other, clamping and aligning the medical tubing so that the port of the medical tubing is flush with the detection shaft seat 406.

[0058] Specifically, the second cylinder 105 drives the lower alignment 5 and the pushing detection mechanism 4 to move forward through the movable base plate 301 until the movable base plate 301 touches the second movable limit block 107. At this time, the lower alignment 5 reaches directly below the upper alignment 6. The lower alignment cylinder 505 and the upper alignment cylinder 601 simultaneously drive the lower alignment tube plate 507 and the upper alignment tube plate 603 to move toward each other, clamping and aligning the medical pipeline so that the port of the medical pipeline is flush with the detection shaft seat 406.

[0059] (3) The third cylinder 303 drives the pushing detection mechanism 4 to continue moving forward to its position, and the pressing cylinder 414 drives the silicone head 409 to move forward to wrap the port of the medical tube, and then the solenoid valve 417 is opened to control the gas entry. The gas provided by the gas source is sequentially passed through the pressure reducing valve 305, the solenoid valve 417, the analog pressure switch 419, the air inlet 412, the air outlet 413 and the blowing hole 410 into the medical tube. When the pressure value inside the medical tube reaches the set value, ventilation is stopped and the pressure is maintained for about 3 seconds. The pressure value change is calculated based on the pressure value fed back by the analog pressure switch 419, and then the air tightness of the medical tube is judged based on the pressure value change.

[0060] Specifically, the third cylinder 303 drives the push detection mechanism 4 to continue to move forward through the detection base plate 401 until the detection base plate 401 touches the detection limit block 510. At this time, the pressing cylinder 414 drives the silicone head 409 to move forward through the pressing shaft 411 to wrap the port of the medical tube, and then opens the solenoid valve 417 to control the gas to enter. The gas provided by the gas source passes through the pressure reducing valve 305, the solenoid valve 417, the analog pressure switch 419, the air inlet 412, the air outlet 413 and the blowing hole 414 in sequence. 10 is passed into the medical pipeline, and the analog pressure switch 419 detects the pressure value of the gas in the medical pipeline and feeds it back to the control system. As the gas is passed in, the pressure value inside the medical pipeline gradually increases. When the pressure value reaches the set value of the control system, the solenoid valve 417 controls the gas to stop passing in and maintains the pressure for about 3 seconds. Then the control system calculates the pressure value change according to the pressure value fed back by the analog pressure switch 419. The staff judges whether the air tightness of the medical pipeline is qualified according to the pressure value change displayed on the control system.

[0061] (4) After the air tightness test is completed, each component returns to its initial position and the next air tightness test is carried out.

[0062] The present application provides a medical pipeline air tightness detection device and a detection method thereof. In the present application, the air tightness of the medical pipeline is detected by wrapping and sealing under the coordinated action of the supporting mechanism 2, the moving mechanism 3, the pushing detection mechanism 4, the lower alignment 5 and the upper alignment 6. The detection result is accurate, the detection precision is high, and the detection efficiency is high. By arranging a silicone head 409 made of soft material on the pushing detection mechanism 4, the port of the medical pipeline is wrapped and sealed, ensuring a good sealing effect while avoiding damage to the medical pipeline. Compared with the traditional extrusion sealing method, the wrapping sealing method is more convenient and efficient. The plug can accurately detect the leakage problem caused by the loose bonding of the components of the medical pipeline, and the detection result is accurate; by using the change in pressure value to judge the airtightness of the medical pipeline, it can detect materials with slight leakage, improve the detection accuracy, and ensure the product qualification rate; by detecting multiple medical pipelines at a time, the detection efficiency is improved; the invention has a simple structure, easy operation, high detection efficiency, high detection accuracy, accurate detection results, high product qualification rate, and low product damage rate, which is conducive to the realization of automated, intelligent and industrialized production of medical device companies, and can be widely used in the field of medical device processing technology.

[0063] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0064] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A medical pipeline air tightness detection device, characterized in that: It includes a detection frame, a supporting mechanism is provided on the outer side of the detection frame, and the medical tube is loaded through the supporting mechanism. A moving mechanism is slidably connected to the upper side of the bottom end of the detection frame, and a pushing detection mechanism is slidably connected to the upper side of the moving mechanism. A lower aligning position is provided on the end of the moving mechanism close to the supporting mechanism, and an upper aligning position is provided on the top side of the detection frame close to the supporting mechanism. The lower aligning position and the upper aligning position are used in conjunction with each other to align the medical tube. The pushing detection mechanism is provided with a detection base plate, the detection base plate is provided with a detection support plate, and the detection support plate is provided with a detection vertical plate at one end near the supporting mechanism, the detection vertical plate is provided with a detection fixing plate, and the detection fixing vertical plate is provided with a plurality of detection shaft seats arranged side by side, and the detection shaft seat is horizontally arranged. An axial through hole with a T-shaped cross section is provided in the detection shaft seat, and the diameter of the axial through hole at one end near the supporting mechanism is smaller than the diameter of the end away from the supporting mechanism. A silicone head is provided in the axial through hole, and a pressing shaft is provided on the other side of the silicone head, and the diameters of the silicone head and the pressing shaft are both larger than the diameter of the end of the axial through hole near the supporting mechanism. The detection fixing plate is also provided with a plurality of pressing cylinders with the same number as the detection shaft seat, and the piston rods of the pressing cylinders are connected to the pressing shaft, and the pressing cylinder drives the silicone head to move back and forth along the axial through hole through the pressing shaft; The movable mechanism is provided with a movable base plate, a pressure reducing valve seat plate is provided on the movable base plate, and several pressure reducing valves are provided on the pressure reducing valve seat plate, and the pressure reducing valves are connected to the air source through an air pipe; an electromagnetic valve support plate is provided on the end of the detection base plate away from the supporting mechanism, and an electromagnetic valve seat plate is provided on the electromagnetic valve seat plate, and several electromagnetic valves are provided on the electromagnetic valve seat plate; an end of the detection support plate away from the supporting mechanism is provided with a pressure switch support plate, and several analog pressure switches are provided on the pressure switch support plate, and the number of the pressure reducing valve, the electromagnetic valve, and the analog pressure switches is the same as the number of the detection shaft seat; a side hole is provided on the side of the detection shaft seat, and an air inlet is provided on the side of the clamping shaft, and the side hole corresponds to the air inlet, and an air outlet is provided on the end of the clamping shaft close to the silicone head, and the air inlet is connected to the air outlet, and a blowing through hole is provided on the silicone head, and the blowing through hole is connected to the air outlet, and the pressure reducing valve, the electromagnetic valve, the analog pressure switch and the air inlet are connected in sequence through an air pipe; The detection frame is a bracket structure consisting of a bottom plate, a vertical plate and a top plate. A pressing rod fixing block is symmetrically provided on the side of the top plate close to the material supporting mechanism. A pressing vertical rod is provided on the pressing rod fixing block. A horizontally arranged pressing rod is provided at the bottom end of the pressing vertical rod. The pressing rod is located on the outside of the material supporting mechanism.

2. A medical pipeline air tightness detection device according to claim 1, characterized in that: The supporting mechanism is provided with a supporting base plate, the supporting base plate is arranged on the outside of the detection frame, a first cylinder is provided on the supporting base plate, the piston rod of the first cylinder is connected to a lifting cylinder seat plate, the first cylinder drives the lifting cylinder seat plate to move forward and backward, a lifting cylinder is provided on the lifting cylinder seat plate, the piston rod of the lifting cylinder is connected to a supporting shaft fixing plate, the lifting cylinder drives the supporting shaft fixing plate to move up and down, a connecting vertical plate is provided on the supporting shaft fixing plate, a horizontally arranged supporting shaft is rotatably connected on the connecting vertical plate, a plurality of coaxially arranged annular grooves are provided on the supporting shaft, and the medical pipeline is placed in the annular groove.

3. A medical pipeline air tightness detection device according to claim 2, characterized in that: A first slide rail is symmetrically provided on the base plate, the moving mechanism is provided on the first slide rail, the moving base plate is slidably connected to the first slide rail, a second cylinder is also provided on the base plate, the piston rod of the second cylinder is connected to the moving base plate, and the second cylinder drives the moving base plate to move forward and backward.

4. A medical pipeline air tightness detection device according to claim 3, characterized in that: A second slide rail parallel to the first slide rail is symmetrically provided on the movable base plate, the push detection mechanism is provided on the second slide rail, the detection base plate is slidably connected to the second slide rail, and a third cylinder is also provided on the movable base plate, the piston rod of the third cylinder is connected to the detection base plate, and the third cylinder drives the detection base plate to move forward and backward.

5. The medical pipeline air tightness detection device according to claim 4, characterized in that: The lower alignment is provided with a lower alignment bracket consisting of an alignment bottom plate, an alignment vertical plate and an alignment top plate. The lower alignment bracket is provided on the movable bottom plate near one end of the supporting mechanism. The alignment top plate is provided with a lower alignment cylinder. The piston rod of the lower alignment cylinder is connected with a lower alignment cylinder connecting plate. The lower alignment cylinder connecting plate is located above the alignment top plate. A lower alignment tube plate is provided on the top of the lower alignment cylinder connecting plate. The lower alignment cylinder drives the lower alignment tube plate to move up and down. The top of the lower alignment tube plate is provided with a plurality of lower grooves arranged side by side.

6. The medical pipeline air tightness detection device according to claim 5, characterized in that: The upper alignment cylinder is provided with an upper alignment cylinder arranged opposite to the lower alignment cylinder, the upper alignment cylinder is arranged on the top plate, the piston rod of the upper alignment cylinder is connected with an upper alignment cylinder connecting plate, the upper alignment cylinder connecting plate is located below the top plate, the bottom end of the upper alignment cylinder connecting plate is provided with an upper alignment tube plate, the upper alignment cylinder drives the upper alignment tube plate to move up and down, and the bottom end of the upper alignment tube plate is provided with a number of upper grooves arranged side by side with the same number as the lower grooves; the lower alignment cylinder and the upper alignment cylinder simultaneously drive the lower alignment tube plate and the upper alignment tube plate to move toward each other, clamping and aligning the medical pipeline.

7. The medical pipeline air tightness detection device according to claim 6, characterized in that: The top plate is also provided with an equipment warning light.

8. A detection method for a medical pipeline airtightness detection device according to claim 6 or 7, characterized in that: The following steps are involved: (1) The first cylinder drives the supporting shaft to move backward, and the lifting cylinder drives the supporting shaft to move upward, adjusting the horizontal and vertical positions of the medical tube on the supporting shaft so that the medical tube is flush with the detection shaft seat; (2) The second cylinder drives the lower positioning and pushing detection mechanism to move forward to its position, so that the lower positioning reaches directly below the upper positioning. The lower positioning cylinder and the upper positioning cylinder simultaneously drive the lower positive tube plate and the upper positive tube plate to move toward each other, clamping and positioning the medical tube so that the port of the medical tube is flush with the detection shaft seat; (3) The third cylinder drives the push detection mechanism to continue moving forward to its position, and the compression cylinder drives the silicone head to move forward to wrap the port of the medical tube, and then the solenoid valve is opened to control the gas to enter. The gas provided by the gas source passes through the pressure reducing valve, solenoid valve, analog pressure switch, air inlet, air outlet and blow hole in turn into the medical tube. When the pressure value inside the medical tube reaches the set value, the ventilation is stopped and the pressure is maintained for about 3 seconds. The pressure value change is calculated according to the pressure value feedback from the analog pressure switch, and then the air tightness of the medical tube is judged according to the pressure value change; (4) After the air tightness test is completed, each component returns to its initial position and the next air tightness test is carried out.

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