CN108398257A - Disposable chest drainage device dry seal valve closure performance test equipment - Google Patents

Abstract

Disposable thorax drainage device dry-sealed valve closes capability test equipment relates to thorax drainage device's test technical field. The base is installed to the lower part that supplies examination drainage device and pressure differential gauge, and rotatory buffer, levelness detection device and angle micromatic setting are installed on the upper portion of base, and the drainage device that supplies examination is connected on rotatory buffer's upper portion. Rotatory buffer can provide the buffering for supplying the examination drainage device, and violent rocking appears in inside liquid when avoiding supplying the examination drainage device to receive vibrations. The levelness detection device can detect the integral levelness of the water pressure difference meter, and when the water pressure difference meter inclines to a certain degree, the levelness detection device can send out an alarm through the alarm to remind a worker that the water pressure difference meter is not leveled. The angle fine-tuning device can adjust the levelness of the water pressure difference meter through the matching of the screw rod nut when the water pressure difference meter is not leveled, so that the water pressure difference meter can quickly reach the horizontal state, and the accuracy of a test result is improved.

Description

Disposable chest drainage device dry seal valve closure performance test equipment

technical field

The invention relates to the technical field of testing chest cavity drainage devices, in particular to a device for testing the closing performance of a dry seal valve of a disposable chest cavity drainage device.

Background technique

Disposable chest drainage device is mainly suitable for patients with pneumothorax, pleural effusion caused by various reasons and patients who need closed drainage after surgery. The most basic requirement for clinical drainage is the "one-way drainage" of residual gas and effusion in the pleural cavity of patients undergoing pleural drainage after surgery, and the ability to accurately measure the drainage fluid. The dry-sealed valve chest drainage device is characterized by the use of a one-way "dry-sealed valve" to achieve one-way drainage of residual air and effusion.

The structure configuration of the existing dry seal valve closing performance test equipment for disposable chest drainage devices is relatively unreasonable, and it cannot accurately test the fluid pressure during the chest drainage operation. At the same time, the internal fluid of the drainage device under test is violent Shaking, which will have a certain degree of impact on the test. Whether the water pressure differential gauge is in a horizontal state directly affects the accuracy of the test results, and it does not have a levelness adjustment mechanism.

Contents of the invention

In view of the technical problems existing in the prior art, the object of the present invention is to provide a device for testing the closing performance of the dry sealing valve of a disposable chest drainage device with high testing accuracy.

In order to achieve the above object, the technical solution adopted in the present invention is: a kind of disposable chest drainage device dry seal valve closing performance test equipment, including the test drainage device and the water pressure differential gauge, the upper part of the test drainage device is connected to the drainage interface , the drainage interface is connected to the tee, the first port of the tee is connected to the interior of the drainage interface, the second port of the tee is connected to the suction source, and the third port of the tee is connected to the outside world; one end of the pressure supply tube is connected to the test drainage The interior of the device is connected, and the other end is connected to the differential pressure gauge. One end of the differential pressure gauge is sealed and connected to the pressure supply pipe, and the other end is connected to the outside world; the lower part of the test drainage device and the differential pressure gauge is equipped with a base , the upper part of the base is equipped with a rotating buffer device, the upper part of the rotating buffer device is connected to the test drainage device; the rotating buffer device includes an upper support rod and a lower support rod, the lower end of the lower support rod is connected with the base, and the upper support The upper end of the rod is connected with the test drainage device, the lower end of the upper support rod is hinged with the upper end of the lower support rod, two springs are connected to the upper part of the base, and the two springs are respectively located on both sides of the lower support rod, and the lower end of the spring is connected to the base , the upper end of the spring is connected to the test drainage device.

As a preferred technical solution of the present invention, a levelness detection device is installed on the upper part of the base of the disposable chest drainage device dry seal valve closing performance testing device, and the upper part of the levelness detection device is connected to a water pressure differential gauge; The levelness detection device includes a conductive ball, a power supply, an alarm and a conductive ring connected in series in sequence, the alarm and the conductive ring are connected to the base, the bottom of the water pressure differential gauge is connected to a wire, and the lower end of the wire is connected to a conductive ball. The middle of the conductive ring.

As a preferred technical solution of the present invention, an angle fine-tuning device is also installed on the top of the base of the disposable chest drainage device dry seal valve closing performance testing device, and the upper part of the angle fine-tuning device is connected with a water pressure differential gauge; the angle fine-tuning The device includes a first rotating rod, a second rotating rod, a forward screw and a reverse screw, the upper end of the first rotating rod and the upper end of the forward screw are connected to the bottom of the water pressure differential gauge, wherein the forward screw is connected to the The water pressure differential gauge is hinged, and the lower end of the reverse screw rod and the lower end of the second rotating rod are connected to the base, wherein the reverse screw rod is hinged to the base; the lower end of the first rotating rod is hinged to the upper end of the second rotating rod; A reverse nut is threaded on the screw rod, and a forward nut is threaded on the forward screw rod, and the reverse nut and the forward nut are connected through a fixed column; rotating the fixed column drives the forward nut and the reverse nut to rotate at the same time, thereby The forward screw rod and the reverse screw rod are pushed out or retracted inward at the same time, thereby adjusting the angle of the water pressure differential gauge.

Compared with the prior art, the beneficial effects of the present invention are as follows:

By adding a rotating buffer device, a levelness detection device and an angle fine-tuning device to the test equipment, the test accuracy is significantly improved. The rotating buffer device can provide cushioning for the drainage device under test, so as to avoid violent shaking of the internal liquid when the drainage device under test is shaken. The levelness detection device can detect the overall levelness of the differential water pressure gauge. When the differential pressure gauge is tilted to a certain degree, the levelness detection device can send an alarm through the alarm to remind the staff that the differential pressure gauge is not leveled. The angle fine-tuning device can adjust the levelness of the water pressure differential gauge through the cooperation of the screw nut when the water pressure differential gauge is not leveled, so that the water pressure differential gauge can quickly reach the horizontal state and improve the accuracy of the test results.

In addition, the device for testing the closing performance of the dry-sealing valve of the disposable chest drainage device of the present invention also has the advantages of simple and compact structure, low manufacturing cost, and easy use.

Description of drawings

Fig. 1 is a schematic structural diagram of a test device for the closing performance of a dry-seal valve of a disposable chest drainage device.

FIG. 2 is a schematic diagram of an enlarged structure of region I in FIG. 1 .

Fig. 3 is a schematic diagram of the circuit connection of the levelness detection device.

Detailed ways

The device for testing the closing performance of the dry-sealing valve of the disposable chest drainage device of the present invention will be further described below in combination with the embodiments and the accompanying drawings.

As shown in Figure 1, the dry seal valve closing performance test equipment for a disposable chest drainage device includes a test drainage device 1, which is a hollow box, and the upper part of the test drainage device 1 is connected to a drainage interface 2, The inside of the drainage interface 2 is connected to the inside of the drainage device 1 for testing, the drainage interface 2 is connected to the tee 4, the first port of the tee 4 is connected to the inside of the drainage interface 2, and the second port of the tee 4 is connected to the suction source 3 , the third port of the tee 4 communicates with the outside world, the suction source 3 is a rubber balloon-shaped structure, one side of the drainage device 1 for testing is connected to the pressure supply tube 6, and the inside of one end of the pressure supply tube 6 is connected to the inside of the drainage device 1 for testing Connected, the other end of the pressure supply pipe 6 is connected to the water pressure differential gauge 5, the water pressure differential gauge 5 is a U-shaped tubular structure, one end of the water pressure differential gauge 5 is sealed, and the other end is connected to the outside world, the sealed end of the water pressure differential gauge 5 It is connected with the pressure supply pipe 6, and the inside of the water pressure differential gauge 5 is filled with water.

The present invention adds a water pressure differential gauge 5. During the drainage process, the liquid pressure inside the drainage device 1 for testing is transmitted to the inside of the sealing end of the water pressure differential gauge 5 through the pressure supply tube 6, resulting in a pressure difference inside the sealing end of the water pressure differential gauge 5. There is a difference between the pressure and the atmospheric pressure, so that the liquid on both sides of the differential pressure gauge 5 has a height difference. The tester can judge the pressure inside the drainage device 1 according to the height difference of the liquid on both sides of the differential pressure gauge 5 . In the present invention, by adding the suction source 3, when the liquid level displayed by the differential pressure gauge 5 is stable, the pressure change value can be provided for the inside of the drainage device 1 to be tested by pressing operation, so that a slight pressure is generated inside the differential pressure gauge 5 change, so that the liquid inside the differential water pressure gauge 5 can vibrate slightly, so that the liquid inside the differential water pressure gauge 5 can display a more accurate height value. One end of the tee 4 of the present invention communicated with the outside world can be conveniently pressed by the operator through the finger 7 to control the on-off situation of the internal air pressure of the drainage device 1 under test and the external air pressure. The suction source 3 of the present invention is separated from the pressure supply pipe 6 , which can avoid the excessive influence of the suction source 3 on the change of the pressure value inside the pressure supply pipe 6 . The working principle of the present invention (refer to the pharmaceutical industry standard of the People's Republic of China YY/T 0583.2-2016) is: make the drainage device in the state for use, but do not add water to the gas leakage machine, first press the upper opening of the tee with your fingers, Manually operate the suction source to make the negative pressure of the effusion chamber reach a height of minus two centimeters of water column. Release the upper mouth of the tee with your fingers to connect the suction port to the atmosphere. Observe and record the change of negative pressure in the effusion chamber within one minute.

A base 32 is installed on the lower part of the test drainage device 1 and the water pressure differential gauge 5, and a rotating buffer device, a levelness detection device and an angle fine-tuning device are installed on the top of the base 32, and the upper part of the levelness detection device and the angle fine-tuning device is connected to the water pressure difference Meter 5, the upper part of the rotating buffer device is connected to the test drainage device 1.

The rotating buffer device, levelness detection device and angle fine-tuning device of the present invention can make the test drainage device 1 and the water pressure differential gauge 5 more stable during testing, and provide support for the test drainage device 1 and the water pressure differential gauge 5 at the same time, To facilitate the test. The rotating buffer device can provide buffering for the drainage device 1 to be tested, so as to avoid violent shaking of the internal liquid when the drainage device 1 is shaken.

Please also refer to Fig. 2 and 3, the levelness detection device comprises conductive ball 12, power supply 27, siren 14 and conductive ring 13 connected in series successively, and alarm 14 and conductive ring 13 are all connected with base 32, water pressure differential gauge 5 The bottom of the wire 11 is connected, the lower end of the wire 11 is connected to the conductive ball 12, and the conductive ball 12 is located in the middle of the conductive ring 13.

The levelness detection device of the present invention can detect the overall levelness of the water pressure differential gauge 5, and when the water pressure differential gauge 5 tilts to a certain degree, the levelness detection device can send an alarm through the alarm 14 to remind the staff of the water pressure differential gauge 5 is not leveled. The conductive ring 13 and the conductive ball 12 of the present invention are separated from each other when the water pressure differential gauge 5 is in a horizontal state, so that the series circuit formed by the alarm 14, the power supply 27, the conductive ring 13 and the conductive ball 12 is disconnected. When the alarm 14 is not energized, no alarm will be issued. When the water pressure differential gauge 5 is tilted, the conductive ball 12 will be driven by the wire 11 to contact the conductive ring 13, so that the alarm 14, the power supply 27, the conductive ring 13 and the conductive ball The series circuit that 12 constitutes conduction, thereby makes alarm 14 send the alarm, reminds the staff that water pressure differential gauge 5 is not leveled.

Angle fine-tuning device comprises first rotating rod 15, second rotating rod 16, forward screw mandrel 17 and reverse screw mandrel 20, and the upper end of first rotating rod 15 and the upper end of forward screw mandrel 17 are all connected with the water pressure differential gauge 5 The bottom is connected, wherein the forward screw rod 17 is hinged with the water pressure differential gauge 5, and the lower end of the reverse screw rod 20 and the lower end of the second rotating rod 16 are connected with the base 32, wherein the reverse screw rod 20 is hinged with the base 32; The lower end of a rotating rod 15 is hinged with the upper end of the second rotating rod 16; the reverse screw rod 20 is threaded with a reverse nut 21, and the forward screw rod 17 is threaded with a forward nut 18, a reverse nut 21 and a forward screw rod. The nuts 18 are connected by fixing posts 19 .

The angle fine-tuning device of the present invention can adjust the levelness of the water pressure difference meter 5 through the cooperation of the screw nut when the water pressure difference meter 5 is not leveled, so that the water pressure difference meter 5 can quickly reach a horizontal state and improve the reliability of the test results. Accuracy. When the fixing column 19 of the present invention is rotated by the operator, it can drive the forward nut 18 and the reverse nut 21 to rotate at the same time, so that the forward screw 17 and the reverse screw 20 are simultaneously pushed out or contracted inward. Therefore, the adjustment distance can be doubled by rotating the fixed column 19 once, thereby improving the angle adjustment efficiency of the water pressure differential gauge 5 . During the process of stretching and contracting the length of the angle fine-tuning device, the first rotating rod 15 and the second rotating rod 16 can adapt to the length adjustment of the angle fine-tuning device through rotation, thereby realizing the level adjustment of the water pressure differential gauge 5 .

The rotating buffer device comprises an upper support rod 52 and a lower support rod 53, the lower end of the lower support rod 53 is connected with the base 32, the upper end of the upper support rod 52 is connected with the drainage device 1 for testing, and the lower end of the upper support rod 52 is connected with the lower support rod 53 The upper end of the base 32 is hinged, and the top of the base 32 is connected to two springs 10, and the two springs 10 are respectively located on both sides of the lower support rod 53. The lower end of the spring 10 is connected to the base 32, and the upper end of the spring 10 is connected to the drainage device 1 for testing.

The rotating buffer device of the present invention can provide buffering for the test drainage device 1. When the test drainage device 1 vibrates, the rotation buffer device can use the elastic force of the spring 10 to reduce the instantaneous acceleration of the test drainage device 1, avoiding the test. Due to the excessive vibration of the drainage device 1, the liquid in the interior vibrates to a large extent, which improves the speed at which the liquid in the drainage device 1 for testing returns to calm, and avoids excessive vibration from affecting the test. The lower end of the upper support rod 52 of the present invention is hinged to the upper end of the lower support rod 53, which can regulate the posture of the test drainage device 1 when it shakes, so that the test drainage device 1 can move along the direction of the upper support rod 52 and the lower support rod 53. The hinged shaft swings, thereby avoiding the excessive vibration amplitude of the internal liquid caused by the irregular movement of the drainage device 1 under test.

The above content is only an example and description of the concept of the present invention. Those skilled in the art make various modifications or supplements to the described specific embodiments or replace them in similar ways, as long as they do not deviate from the concept of the invention Or beyond the scope defined in the claims, all should belong to the protection scope of the present invention.

Claims (3)

1. A device for testing the closing performance of the dry seal valve of a disposable chest drainage device, comprising a test drainage device (1) and a water pressure differential gauge (5), and the upper part of the test drainage device (1) is connected to a drainage interface (2) , the drainage interface (2) is connected to the tee (4), the inside of the first port of the tee (4) is connected to the interior of the drainage interface (2), the second port of the tee (4) is connected to the suction source (3), and the three The third port of the pass (4) communicates with the outside world; one end of the pressure supply pipe (6) communicates with the inside of the test drainage device (1), the other end is connected with the water pressure differential gauge (5), and the water pressure differential gauge (5 ) is sealed at one end and connected with the pressure supply pipe (6), and the other end communicates with the outside world; it is characterized in that: the bottom of the test drainage device (1) and the differential pressure gauge (5) is equipped with a base (32), The top of the base (32) is equipped with a rotating buffer device, and the top of the rotating buffer device is connected to the test drainage device (1); the rotating buffer device includes an upper support rod (52) and a lower support rod (53), The lower end of the lower support rod (53) is connected with the base (32), the upper end of the upper support rod (52) is connected with the test drainage device (1), and the lower end of the upper support rod (52) is connected with the upper end of the lower support rod (53). Hinged, the top of base (32) is connected with two springs (10), and two springs (10) are positioned at the both sides of lower support bar (53) respectively, and the lower end of spring (10) is connected with base (32), and spring ( 10) is connected to the drainage device (1) for testing at the upper end. 2. The disposable chest drainage device dry seal valve closing performance testing device as claimed in claim 1, is characterized in that, the top of the base (32) is also equipped with a levelness detection device, the levelness detection device The upper part is connected with the differential pressure gauge (5); the level detection device includes conductive balls (12), power supply (27), siren (14) and conductive ring (13) connected in series successively, siren (14) and Conductive ring (13) is all connected with base (32), and the bottom connection lead (11) of water pressure gauge (5), the lower end of lead wire (11) connects conductive ball (12), and conductive ball (12) is positioned at conductive ring ( 13) in the middle. 3. The disposable chest drainage device dry seal valve closing performance testing device as claimed in claim 1, characterized in that, the top of the base (32) is also equipped with an angle fine-tuning device, and the top of the angle fine-tuning device is in contact with The water pressure differential gauge (5) is connected; the angle fine-tuning device includes a first rotating rod (15), a second rotating rod (16), a forward screw mandrel (17) and a reverse screw mandrel (20), the first rotation Both the upper end of the rod (15) and the upper end of the forward screw rod (17) are connected to the bottom of the water pressure differential gauge (5), wherein the forward screw rod (17) is hinged with the water pressure differential gauge (5), and the reverse screw rod The lower end of (20) and the lower end of the second rotating rod (16) are all connected with the base (32), wherein the reverse screw rod (20) is hinged with the base (32); the lower end of the first rotating rod (15) is connected with the second The upper end of the rotating rod (16) is hinged; the reverse screw rod (20) is threaded with a reverse nut (21), the forward screw rod (17) is threaded with a forward nut (18), and the reverse nut (21 ) and the forward nut (18) are connected by a fixed column (19); rotating the fixed column (19) drives the forward nut (18) and the reverse nut (21) to rotate at the same time, so that the forward screw mandrel (17) and The reverse screw rods (20) are simultaneously pushed out or contracted inward, thereby adjusting the angle of the water pressure differential gauge (5).