CN218646546U - Venous tube gas measuring device - Google Patents

Abstract

The utility model belongs to the technical field of automation equipment, especially, relate to a venous line surveys gas device. Including the air breather, stifled gas mechanism and air meter subassembly, the air breather is connected with first chassis sliding connection, the air breather is connected with first actuating mechanism, first actuating mechanism drive air breather removes for first chassis, stifled gas mechanism and second chassis sliding connection, stifled gas mechanism is connected with second actuating mechanism, second actuating mechanism drive stifled gas mechanism removes for the second chassis, the air breather corresponds two or more than two stations, stifled gas mechanism corresponds two or more than two stations, air breather and stifled gas mechanism synchronous motion, the quantity and the air breather of synchronous motion station, the station quantity that stifled gas mechanism corresponds is the same. Has the advantages that: adopt the gas measurement equipment to leak hunting to the venous line, the venous line removes a station, and venting mechanism and stifled gas mechanism remove a station thereupon, and check-out time is higher than six seconds, detects more accurately.

Description

Venous tube gas measuring device

Technical Field

The utility model belongs to the technical field of automation equipment, especially, relate to a venous line gas measuring device.

Background

The transfusion system is a disposable medical consumable mainly used for intravenous transfusion, and in order to ensure normal work of the transfusion system, the transfusion system needs to be subjected to a sealing test before leaving a factory, and the sealing test can detect whether the transfusion system leaks air or not and is blocked or not.

Patent document [ CN201610581072.9] discloses a intravenous catheter assembly machine, which comprises a rack and a conveying device arranged on the rack and used for conveying intravenous catheter components, wherein the rack is sequentially provided with a straw assembly mechanism, a needle seat feeding mechanism, an internal glue adding component, a needle handle feeding mechanism, a drying mechanism, a taper detection device, a catheter ventilation detection device, a tension detection device and a catheter blanking device from left to right. The conveying device comprises a synchronous belt, a catheter fixing piece is arranged on the synchronous belt, a plurality of venous tubes form a station as can be seen from the attached drawing 2 of the patent, and a plurality of stations are arranged on the synchronous belt. The assembly machine detects air leakage through the barometer, the required detection time is less than six seconds, the conveying beat of the assembly machine is six seconds, and the stay time of one station is six seconds. The catheter ventilation detection device is fixedly arranged on the machine frame and corresponds to one station, and the venous tube on one station is only detected for six seconds each time, so that whether the venous tube leaks air or not is detected.

In order to further improve the precision of sealing detection, a pressure gauge is not used for detection, but an air tightness leak detector is used for detection, but the time required by the air tightness leak detector for detection is more than six seconds, and the technical scheme of the patent is not suitable for use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, provide one kind and can carry out the gas tightness and detect the more accurate venous line gas measuring device for a longer time.

In order to achieve the above purpose, the utility model adopts the following technical proposal: the venous tube gas measuring device comprises a ventilation mechanism, a gas blocking mechanism and a gas measuring instrument assembly, wherein the ventilation mechanism is connected with a first underframe in a sliding manner, the ventilation mechanism is connected with a first driving mechanism, the first driving mechanism drives the ventilation mechanism to move relative to the first underframe, the gas blocking mechanism is connected with a second underframe in a sliding manner, the gas blocking mechanism is connected with a second driving mechanism, the second driving mechanism drives the gas blocking mechanism to move relative to the second underframe, the ventilation mechanism corresponds to two or more stations, the gas blocking mechanism corresponds to two or more stations, the ventilation mechanism and the gas blocking mechanism move synchronously, and the number of the synchronously moving stations is the same as that of the ventilation mechanism and the gas blocking mechanism;

the ventilation mechanism comprises a first support, a first catheter positioning mechanism and ventilation assemblies are arranged on the first support, the first catheter positioning mechanism comprises two or more catheter positioning assemblies, the number of the ventilation assemblies is two or more, and the ventilation assemblies correspond to the catheter positioning assemblies one by one;

the air blocking mechanism comprises a second support, the structure of the second support is the same as that of the first support, a second guide pipe positioning mechanism and an air blocking assembly are arranged on the second support, the second guide pipe positioning mechanism comprises two or more guide pipe positioning assemblies, the number of the air blocking assemblies is two or more, and the air blocking assemblies correspond to the guide pipe positioning assemblies one by one;

the air measuring instrument assembly comprises air measuring equipment, the air measuring equipment is connected with the pressure regulating valve through an air pipe, and the pressure regulating valve is connected with the ventilation assembly through the air pipe.

In the above-mentioned venous duct gas measurement device, the gas measurement device is an air tightness leak detector.

In the above-mentioned device for measuring the gas in the venous duct, the first support comprises a supporting base plate, side supporting plates are arranged on two sides of the supporting base plate, an upper fixing plate and a lower fixing plate which are vertically arranged are arranged between the supporting plates on the two sides, a window area is formed between the upper fixing plate and the lower fixing plate, and the supporting plates on the two sides are also provided with a translation base plate which is horizontally arranged.

In the above-mentioned device for measuring the gas in the venous duct, the first support further comprises a reinforcing rib plate, the translation bottom plate is fixedly connected with the lower fixing plate through the reinforcing rib plate, a supporting plate is arranged between the translation bottom plate and the supporting bottom plate, a reinforcing plate is further arranged between the supporting plates at two sides, a reinforcing plate is arranged between the reinforcing plate and the upper fixing plate, and a space for accommodating the catheter positioning assembly is formed by the upper fixing plate, the reinforcing plate and the reinforcing plate in a surrounding manner.

In the above venous tube gas measurement device, the first chassis and the second chassis have the same structure, the first chassis comprises a bottom plate and sliding support plates arranged on two sides of the bottom plate, the sliding support plates are provided with sliding rails, and the support bottom plate is provided with a plurality of sliding blocks connected with the sliding rails in a sliding manner.

In the above venous tube gas measurement device, the first driving mechanism and the second driving mechanism have the same structure, the first driving mechanism comprises a ball screw, two ends of the ball screw are arranged on the bottom plate through a supporting seat, the ball screw is provided with a nut mounting seat, the nut mounting seat is fixedly connected with the bottom plate, and one end of the ball screw is connected with a driving motor.

In foretell venous duct surveys gas device, the pipe locating component includes locating plate subassembly and lower locating plate subassembly, and the upper end of going up the locating plate subassembly is connected with the location fixed plate, goes up location fixed plate and an upper fixed plate sliding connection, goes up the location fixed plate and is connected with first drive actuating cylinder, and the lower extreme of lower locating plate subassembly is connected with lower location fixed plate, lower location fixed plate and a lower fixed plate sliding connection, and lower location fixed plate drives actuating cylinder with the second and is connected. The catheter positioning assembly further comprises an upper pressing block and a lower pressing block, an upper pressing groove is formed in the upper pressing block, a lower pressing groove is formed in the lower pressing block, the upper pressing block is connected with an upper positioning fixing plate in a sliding mode through an upper pressing plate, the upper pressing plate is connected with a third driving air cylinder, the lower pressing block is connected with a lower positioning fixing plate in a sliding mode through a lower pressing plate, and the lower pressing plate is connected with a fourth driving air cylinder.

In foretell venous duct gas measuring device, go up the locating plate subassembly including the first locating plate, the second locating plate, the third locating plate, the fourth locating plate and the fifth locating plate that set gradually, all be equipped with first positioning groove on the first locating plate, all be equipped with positioning groove on the second locating plate, all be equipped with the third positioning groove of arc transition on the third locating plate, all be equipped with fourth positioning groove on the fourth locating plate, first positioning groove, second positioning groove, third positioning groove and fourth positioning groove enclose into the constant head tank jointly, the lower limit of fifth locating plate is close to the constant head tank.

In foretell venous duct gas measuring device, lower locating plate subassembly is including the first lower locating plate, second lower locating plate, third lower locating plate, fourth lower locating plate and the fifth lower locating plate that set gradually, all be equipped with first positioning groove on the first lower locating plate, all be equipped with the second lower positioning groove of arc transition on the second lower locating plate, all be equipped with third lower positioning groove on the third lower locating plate, all be equipped with the fourth lower positioning groove of arc transition on the fourth lower locating plate, first lower positioning groove, second lower positioning groove, third lower positioning groove and fourth lower positioning groove enclose into lower constant head tank jointly, the higher authority of fifth lower locating plate is close to lower constant head tank.

In the venous tube gas measuring device, the gas measuring equipment is fixed on the translation bottom plate through a gas measuring fixing support, and the pressure regulating valve is fixed on the upper transverse plate through a pressure regulating fixing support.

Compared with the prior art, the venous tube gas measuring device has the advantages that:

firstly, adopt the gas measuring equipment to leak hunting to the venous line, the venous line removes a station, and venting mechanism and stifled gas mechanism remove a station thereupon, and the test time of gas meter subassembly to the venous line prolongs greatly, is higher than six seconds, detects more accurately.

The second, first support is the integral type, and the second support is the integral type, compares with original split type, and it is better to remove the in-process synchronism, and the structure is more firm. And the transmission is carried out in a screw rod transmission mode, so that the transmission precision is high, the movement is stable, and the creeping phenomenon is avoided.

Drawings

Fig. 1 is a perspective view of the venous tube gas measuring device provided by the present invention.

Fig. 2 is a state diagram of the ventilation mechanism in the first station.

Fig. 3 is a state diagram of the ventilation mechanism in the second station.

Fig. 4 is a state diagram of the venting mechanism in the third station.

Fig. 5 is a side view of the vent mechanism provided by the present invention.

Fig. 6 is a perspective view of the air lock mechanism provided by the present invention.

Fig. 7 is a side view of the air lock mechanism provided by the present invention.

Fig. 8 is a perspective view of the first chassis and the first driving mechanism provided by the present invention.

Fig. 9 is a perspective view of a first bracket according to the present invention.

Fig. 10 is a perspective view of another perspective of the first bracket provided by the present invention.

Fig. 11 is a perspective view of the air gauge assembly provided by the present invention.

Fig. 12 is a perspective view of a vent assembly provided by the present invention.

Fig. 13 is a sectional view showing a state where the ventilation core bar of the present invention is fixed.

Fig. 14 is a sectional view of the fixing block and the cover body according to the present invention.

Fig. 15 is a cross-sectional view of a vented core bar provided by the present invention.

Fig. 16 is a perspective view of a catheter positioning mechanism provided by the present invention.

Fig. 17 is a perspective view of a catheter positioning assembly in accordance with the present invention.

Fig. 18 is a perspective view of another perspective of the catheter positioning assembly provided by the present invention.

Fig. 19 is a front view of a catheter positioning assembly provided by the present invention.

Fig. 20 is a rear view of the catheter positioning assembly provided by the present invention.

Fig. 21 is a perspective view of the upper positioning assembly provided by the present invention.

Fig. 22 is a partial enlarged view of fig. 21 provided by the present invention.

Fig. 23 is an exploded view of the upper positioning assembly provided by the present invention.

Fig. 24 is a perspective view of the lower positioning assembly provided by the present invention.

Fig. 25 is a partial enlarged view of fig. 24 provided by the present invention.

Fig. 26 is an exploded view of the lower positioning assembly provided by the present invention.

Fig. 27 is a perspective view of the air lock assembly provided by the present invention.

Fig. 28 is a sectional view showing a fixed state of the air blocking core bar of the present invention.

<xnotran> , 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 28, 29, 30, 31, 32, 33, 34, 35, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, </xnotran> Second lower positioning plate 86, third lower positioning plate 87, fourth lower positioning plate 88, fifth lower positioning plate 89, first lower positioning groove 90, second lower positioning groove 91, third lower positioning groove 92, fourth lower positioning groove 93, lower positioning groove 94, upper edge 95, upper arc-shaped part 96, lower arc-shaped part 97, connector 98, conduit 99, gas shutoff core rod 100, gas shutoff gasket 101, rotary connector cone assembly 102, and second conduit positioning mechanism 103.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Examples

As shown in fig. 1-4, the device for measuring the gas in the venous tube comprises a ventilation mechanism 1, a gas blocking mechanism 69 and a gas measuring instrument assembly 7, wherein the ventilation mechanism 1 is used for conveying gas to one end of the venous tube, the gas blocking mechanism 69 is used for blocking the other end of the venous tube, and the gas measuring instrument assembly 7 is used for detecting the gas tightness of the venous tube. The ventilation mechanism 1 is connected with the first chassis 2 in a sliding mode, the ventilation mechanism 1 is connected with the first driving mechanism 3, the first driving mechanism 3 drives the ventilation mechanism 1 to move relative to the first chassis 2, the air blocking mechanism 69 is connected with the second chassis 70 in a sliding mode, the air blocking mechanism 69 is connected with the second driving mechanism 71, the second driving mechanism 71 drives the air blocking mechanism 69 to move relative to the second chassis 70, the ventilation mechanism 1 corresponds to two or more stations, and the air blocking mechanism 69 corresponds to two or more stations. The ventilation mechanism 1 and the air blocking mechanism 69 move synchronously, and the number of the synchronously moving stations is the same as that of the stations corresponding to the ventilation mechanism 1 and the air blocking mechanism 69.

If the ventilation mechanism 1 corresponds to three stations, the air blocking mechanism 69 corresponds to three stations. During air measurement, the ventilation mechanism 1 is located on one side of the conveying line, the air blocking mechanism 69 is located on the other side of the conveying line, the air blocking mechanism 69 blocks the venous tubes on the three stations, the ventilation mechanism 1 conducts ventilation on the venous tubes on the three stations, the air detector assembly 7 starts to conduct air tightness detection on the venous tubes, the conveying beat of the stations is six seconds, the three stations continue to move along with the synchronous belt after staying for six seconds, the ventilation mechanism 1 and the air blocking mechanism 69 synchronously move along with the synchronous belt, namely the venous tubes move for one station, the ventilation mechanism 1 and the air blocking mechanism 69 move for one station along with the synchronous belt, the venous tubes continue to move for one station, and the ventilation mechanism 1 and the air blocking mechanism 69 continue to move for one station along with the synchronous belt. Therefore, the detection time of the gas meter component 7 to the venous tube is greatly prolonged and is higher than six seconds, and the detection is more accurate.

As shown in fig. 2 and 5, the ventilation mechanism 1 includes a first support 4, a first catheter positioning mechanism 5 and a ventilation assembly 6 are arranged on the first support 4, the first catheter positioning mechanism 5 positions the catheter, and the ventilation assembly 6 delivers gas to the venous tube. The first catheter positioning mechanism 5 corresponds to two or more stations and comprises two or more catheter positioning assemblies 26, the number of the ventilation assemblies 6 is two or more, and the ventilation assemblies 6 correspond to the catheter positioning assemblies 26 one by one. The catheter positioning assembly 26 holds one end of the intravenous tubing at a site to which the vent assembly 6 is to deliver gas.

As shown in fig. 6 and 7, the air blocking mechanism 69 includes a second bracket 72, the second bracket 72 has the same structure as the first bracket 4, the second bracket 72 is provided with a second catheter positioning mechanism 103 and an air blocking assembly 73, the second catheter positioning mechanism 103 positions the catheter, and the vent assembly 6 blocks one end of the venous tube. The second conduit positioning mechanism 103 corresponds to two or more stations and comprises two or more conduit positioning assemblies 26, the number of the air blocking assemblies 73 is two or more, and the air blocking assemblies 73 correspond to the conduit positioning assemblies 26 one by one. The catheter positioning assembly 26 holds the other end of the vein at a site and the obturator 73 occludes the end of the vein at the site.

As shown in fig. 11, the gas meter assembly 7 includes a gas meter 59, the gas meter 59 is connected to a pressure regulating valve 60 through a gas pipe, and the pressure regulating valve 60 is connected to the ventilation assembly 6 through a gas pipe. The gas measuring device 59 is an ATEQ gas tightness leak detector. The gas enters the gas measuring device 59 after being regulated by the pressure regulating valve 60, the gas measuring device 59 is connected with the ventilation assembly 6, the gas is conveyed into the venous pipe through the ventilation assembly 6, the ventilation of the gas measuring device 59 is stopped after a certain amount of gas is introduced, the pressure of the venous pipe is maintained, and the venous pipe has enough time for gas leakage. Each gas measuring device 59 corresponds to two venous tubes, and whether the product leaks gas or not is judged in a pairwise comparison mode, if the air pressure difference of the two venous tubes is within a set range, the product is qualified, and if the air pressure difference of the two venous tubes exceeds the set range, the product is not qualified.

The first catheter positioning mechanism 5, the vent assembly 6 and the air meter assembly 7 are disposed on the first support 4, and the second catheter positioning mechanism 103 and the air block assembly 73 are disposed on the second support 72. As shown in fig. 9 and 10, the first bracket 4 includes a supporting bottom plate 8, side supporting plates 9 are disposed on two sides of the supporting bottom plate 8, an upper fixing plate 10 and a lower fixing plate 11 are disposed between the two side supporting plates 9, a window area 12 is formed between the upper fixing plate 10 and the lower fixing plate 11, and the two side supporting plates 9 are further provided with a horizontal moving bottom plate 13. The first support 4 further comprises reinforcing rib plates 14, the translation bottom plate 13 is fixedly connected with the lower fixing plate 11 through the reinforcing rib plates 14, a supporting plate 15 is arranged between the translation bottom plate 13 and the supporting bottom plate 8, reinforcing plates 16 are further arranged between the supporting plates 9 on the two sides, reinforcing plates 17 are arranged between the reinforcing plates 16 and the upper fixing plate 10, and a space for accommodating the catheter positioning assembly 26 is formed by the upper fixing plate 10, the reinforcing plates 16 and the reinforcing plates 17 in a surrounding mode. The air measuring device 59 is fixed on the translation bottom plate 13 through an air measuring fixing bracket 61, and the pressure regulating valve 60 is fixed on the upper transverse plate 41 through a pressure regulating fixing bracket 62. First support 4 is the integral type, compares with original split type, and it is better to remove the in-process synchronism, and the structure is more firm.

As shown in fig. 8, the first chassis 2 and the second chassis 70 have the same structure, the first chassis 2 includes a bottom plate 18 and sliding support plates 19 disposed at two sides of the bottom plate 18, the sliding support plates 19 are provided with slide rails 20, and the support bottom plate 8 is provided with a plurality of slide blocks 21 slidably connected with the slide rails 20. The first driving mechanism 3 and the second driving mechanism 71 have the same structure, the first driving mechanism 3 includes a ball screw 22, two ends of the ball screw 22 are disposed on the bottom plate 18 through a supporting seat 23, the ball screw 22 is provided with a nut mounting seat 24, the nut mounting seat 24 is fixedly connected with the bottom plate 18, and one end of the ball screw 22 is connected with the driving motor 25. The transmission is carried out in a screw rod transmission mode, the transmission precision is high, the movement is stable, and the creeping phenomenon is avoided.

As shown in fig. 16 to 20, the catheter positioning assembly 26 includes an upper positioning plate assembly 28 and a lower positioning plate assembly 29, wherein the upper end of the upper positioning plate assembly 28 is connected with an upper positioning fixing plate 30, the upper positioning fixing plate 30 is slidably connected with the upper fixing plate 10, the upper positioning fixing plate 30 is connected with a first driving cylinder 31, the lower end of the lower positioning plate assembly 29 is connected with a lower positioning fixing plate 32, the lower positioning fixing plate 32 is slidably connected with the lower fixing plate 11, and the lower positioning fixing plate 32 is connected with a second driving cylinder 33. The catheter positioning assembly 26 further comprises an upper pressing block 34 and a lower pressing block 35, wherein an upper pressing groove is formed in the upper pressing block 34, a lower pressing groove is formed in the lower pressing block 35, the upper pressing block 34 is slidably connected with the upper positioning fixing plate 30 through an upper pressing plate 63, the upper pressing plate 63 is connected with the third driving cylinder 38, the lower pressing block 35 is slidably connected with the lower positioning fixing plate 32 through a lower pressing plate 64, and the lower pressing plate 64 is connected with the fourth driving cylinder 39. The double-positioning mode is adopted for positioning, the upper positioning plate assembly 28 and the lower positioning plate assembly 29 are used for positioning the end parts of the guide pipes, and the upper pressing block 34 and the lower pressing block 35 are used for positioning the dialysis joints or the rotary joints, so that the fixation is firmer.

As shown in fig. 21 to 23, the upper positioning plate assembly 28 includes a first upper positioning plate 74, a second upper positioning plate 75, a third upper positioning plate 76, a fourth upper positioning plate 77, and a fifth upper positioning plate 78, which are sequentially disposed, wherein the first upper positioning plate 74 is provided with a first upper positioning recess 79, the second upper positioning plate 75 is provided with a second upper positioning recess 80, the third upper positioning plate 76 is provided with a third upper positioning recess 81 having an arc transition, the fourth upper positioning plate 77 is provided with a fourth upper positioning recess 82, the first upper positioning recess 79, the second upper positioning recess 80, the third upper positioning recess 81, and the fourth upper positioning recess 82 jointly form an upper positioning groove 83, and a lower edge 84 of the fifth upper positioning plate 78 is adjacent to the upper positioning groove 83.

As shown in fig. 24-26, the lower positioning plate assembly 29 includes a first lower positioning plate 85, a second lower positioning plate 86, a third lower positioning plate 87, a fourth lower positioning plate 88 and a fifth lower positioning plate 89, which are sequentially disposed, a first lower positioning recess 90 is disposed on each of the first lower positioning plates 85, a second lower positioning recess 91 with arc transition is disposed on each of the second lower positioning plates 86, a third lower positioning recess 92 is disposed on each of the third lower positioning plates 87, a fourth lower positioning recess 93 with arc transition is disposed on each of the fourth lower positioning plates 88, a lower positioning groove 94 is defined by the first lower positioning recess 90, the second lower positioning recess 91, the third lower positioning recess 92 and the fourth lower positioning recess 93, and an upper edge 95 of the fifth lower positioning plate 89 is adjacent to the lower positioning groove 94. Upper detent 83 and lower detent 94 together form a detent when upper detent assembly 28 and lower detent assembly 29 are in the clamped state. The middle part of the upper positioning groove 83 is provided with an upper arc-shaped part 96, the middle part of the lower positioning groove 94 is provided with a lower arc-shaped part 97, the conduit is not easily damaged in the clamping process, and the outer sides of the upper positioning groove 83 and the lower positioning groove 94 are not provided with the arc-shaped parts, so that the conduit is favorably positioned accurately.

An upper vertical plate 40 is arranged on the upper fixing plate 10, an upper transverse plate 41 is arranged on the upper vertical plate 40, a first driving air cylinder 31 and a third driving air cylinder 38 are fixed on the upper transverse plate 41, the first driving air cylinder 31 is located on one side of the upper fixing plate 10, the third driving air cylinder 38 is located on the other side of the upper fixing plate 10, a lower vertical plate 42 is arranged on the lower fixing plate 11, a lower transverse plate 43 is arranged on the lower vertical plate 42, a second driving air cylinder 33 and a fourth driving air cylinder 39 are fixed on the lower transverse plate 43, the second driving air cylinder 33 is located on one side of the lower fixing plate 11, and the fourth driving air cylinder 39 is located on the other side of the lower fixing plate 11.

As shown in fig. 12 to 15, the ventilation assembly 6 includes a ventilation core rod 44, a ventilation channel 65 is disposed on the ventilation core rod 44, a sealing washer 45 is sleeved on a head end of the ventilation core rod 44, a limiting ring 46 is disposed on a circumferential wall of the ventilation core rod 44, the ventilation core rod 44 is disposed on a translation plate 49 through a fixing block 47 and a cover 48, the translation plate 49 is slidably connected with the translation bottom plate 13, the translation plate 49 is connected with a fifth driving cylinder 51, a through groove 52 matched with the ventilation core rod 44 is disposed on the fixing block 47, a through hole 53 matched with the ventilation core rod 44 is disposed on the cover 48, the ventilation core rod 44 is slidably connected with the fixing block 47, the ventilation core rod 44 is slidably connected with the cover 48, a first limiting groove 54 is disposed on an inner wall of the through groove 52, a second limiting groove 55 is disposed on an inner wall of the through hole 53, the first limiting groove 54 and the second limiting groove 55 together form a limiting inner groove 56, the limiting ring 46 is protruded into the limiting inner groove 56, a spring 57 is disposed in the limiting inner groove 56, one end of the spring 57 abuts against a side wall 58 of the second limiting groove 55, and the other end of the spring 57 abuts against the limiting ring 46. The catheter positioning assembly 26 clamps the dialysis adapter 98 and the catheter 99, the head of the vent core rod 44 is inserted into the dialysis adapter 98, and the sealing washer 45 abuts against the dialysis adapter 98 under the action of the spring 57 to seal the gap between the dialysis adapter 98 and the vent core rod 44 and prevent gas leakage. The gas metering device 59 is connected to the vented core 44 via the trachea and gas flows through the vent channel 65 into the dialysis connector 98 and then into the catheter 99.

As shown in fig. 27-28, the air blocking assembly 73 includes an air blocking core bar 100, the air blocking gasket 101 is sleeved on the head end of the air blocking core bar 100, and the air blocking core bar 100 is disposed on the second bracket 72 in the same fixing manner as the ventilation core bar 44. The conduit positioning assembly 26 clamps the rotary union cone assembly 102 and the conduit 99 with the air lock washer 101 blocking the rotary union cone assembly 102.

The specific embodiments described herein are merely illustrative of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.

Although terms are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being contrary to the present invention in any manner whatsoever.

Claims (10)

1. A venous tube air measuring device is characterized by comprising an air vent mechanism (1), an air blocking mechanism (69) and an air measuring instrument assembly (7), wherein the air vent mechanism (1) is connected with a first chassis (2) in a sliding manner, the air vent mechanism (1) is connected with a first driving mechanism (3), the first driving mechanism (3) drives the air vent mechanism (1) to move relative to the first chassis (2), the air blocking mechanism (69) is connected with a second chassis (70) in a sliding manner, the air blocking mechanism (69) is connected with a second driving mechanism (71), the second driving mechanism (71) drives the air blocking mechanism (69) to move relative to the second chassis (70), the air vent mechanism (1) corresponds to two or more stations, the air blocking mechanism (69) corresponds to two or more stations, the air vent mechanism (1) and the air blocking mechanism (69) synchronously move, and the number of the synchronously moving stations is the same as the number of the air vent mechanism (1) and the air blocking mechanism (69);

the ventilation mechanism (1) comprises a first support (4), a first catheter positioning mechanism (5) and a ventilation assembly (6) are arranged on the first support (4), the first catheter positioning mechanism (5) comprises two or more catheter positioning assemblies (26), the number of the ventilation assemblies (6) is two or more, and the ventilation assemblies (6) correspond to the catheter positioning assemblies (26) one by one;

the air blocking mechanism (69) comprises a second support (72), the structure of the second support (72) is the same as that of the first support (4), a second guide pipe positioning mechanism (103) and an air blocking assembly (73) are arranged on the second support (72), the second guide pipe positioning mechanism (103) comprises two or more guide pipe positioning assemblies (26), the number of the air blocking assemblies (73) is two or more, and the air blocking assemblies (73) correspond to the guide pipe positioning assemblies (26) one by one;

the air measuring instrument assembly (7) comprises air measuring equipment (59), the air measuring equipment (59) is connected with the pressure regulating valve (60) through an air pipe, and the pressure regulating valve (60) is connected with the ventilation assembly (6) through the air pipe.

2. A venous tube gas sensing device according to claim 1, characterised in that the gas sensing means (59) is a gas-tight leak detector.

3. The device for measuring the air in the venous duct according to claim 2, characterized in that the first bracket (4) comprises a supporting bottom plate (8), side supporting plates (9) are arranged on two sides of the supporting bottom plate (8), an upper fixing plate (10) and a lower fixing plate (11) which are vertically arranged are arranged between the side supporting plates (9), a window area (12) is formed between the upper fixing plate (10) and the lower fixing plate (11), and the side supporting plates (9) are further provided with a horizontally arranged translation bottom plate (13).

4. The venous duct air measuring device according to claim 3, wherein the first support (4) further comprises a reinforcing rib plate (14), the translation bottom plate (13) is fixedly connected with the lower fixing plate (11) through the reinforcing rib plate (14), a supporting plate (15) is arranged between the translation bottom plate (13) and the supporting bottom plate (8), a reinforcing plate (16) is further arranged between the two side supporting plates (9), a reinforcing plate (17) is arranged between the reinforcing plate (16) and the upper fixing plate (10), and a space for accommodating the catheter positioning assembly (26) is formed by the upper fixing plate (10), the reinforcing plate (16) and the reinforcing plate (17) in a surrounding mode.

5. A device for measuring the air in a venous duct according to claim 4, characterized in that the first chassis (2) and the second chassis (70) have the same structure, the first chassis (2) comprises a bottom plate (18) and sliding support plates (19) arranged at two sides of the bottom plate (18), sliding rails (20) are arranged on the sliding support plates (19), and a plurality of sliding blocks (21) which are connected with the sliding rails (20) in a sliding manner are arranged on the supporting bottom plate (8).

6. A venous tube air measuring device according to claim 5, characterized in that the first driving mechanism (3) and the second driving mechanism (71) have the same structure, the first driving mechanism (3) comprises a ball screw (22), two ends of the ball screw (22) are arranged on the bottom plate (18) through a supporting seat (23), the ball screw (22) is provided with a nut mounting seat (24), the nut mounting seat (24) is fixedly connected with the bottom plate (18), and one end of the ball screw (22) is connected with a driving motor (25).

7. The venous tube gas measuring device according to any one of claims 1 to 6, wherein the catheter positioning assembly (26) comprises an upper positioning plate assembly (28) and a lower positioning plate assembly (29), the upper end of the upper positioning plate assembly (28) is connected with an upper positioning fixing plate (30), the upper positioning fixing plate (30) is slidably connected with the upper fixing plate (10), the upper positioning fixing plate (30) is connected with a first driving cylinder (31), the lower end of the lower positioning plate assembly (29) is connected with a lower positioning fixing plate (32), the lower positioning fixing plate (32) is slidably connected with the lower fixing plate (11), the lower positioning fixing plate (32) is connected with a second driving cylinder (33), the catheter positioning assembly (26) further comprises an upper pressing block (34) and a lower pressing block (35), the upper pressing groove (36) is formed in the upper pressing block (34), the lower pressing groove (37) is formed in the lower pressing block (35), the upper pressing block (34) is slidably connected with the upper positioning fixing plate (30) through an upper pressing plate (63), the upper pressing plate (63) is connected with a third pressing cylinder (38), the lower pressing plate (64) is connected with the lower pressing plate (64), and the lower pressing plate (64) is connected with the lower pressing plate (35).

8. The venous tube gas measuring device according to claim 7, wherein the upper positioning plate assembly (28) comprises a first upper positioning plate (74), a second upper positioning plate (75), a third upper positioning plate (76), a fourth upper positioning plate (77) and a fifth upper positioning plate (78) which are sequentially arranged, a first upper positioning groove (79) is formed in each first upper positioning plate (74), a second upper positioning groove (80) is formed in each second upper positioning plate (75), a third upper positioning groove (81) in arc transition is formed in each third upper positioning plate (76), a fourth upper positioning groove (82) is formed in each fourth upper positioning plate (77), the first upper positioning groove (79), the second upper positioning groove (80), the third upper positioning groove (81) and the fourth upper positioning groove (82) jointly enclose an upper positioning groove (83), and the lower edge (84) of the fifth upper positioning plate (78) is adjacent to the upper positioning groove (83).

9. The endotracheal tube lateral flow measuring device according to claim 8, wherein the lower positioning plate assembly (29) includes a first lower positioning plate (85), a second lower positioning plate (86), a third lower positioning plate (87), a fourth lower positioning plate (88) and a fifth lower positioning plate (89) which are sequentially arranged, a first lower positioning groove (90) is formed in each of the first lower positioning plates (85), a second lower positioning groove (91) with arc transition is formed in each of the second lower positioning plates (86), a third lower positioning groove (92) is formed in each of the third lower positioning plates (87), a fourth lower positioning groove (93) with arc transition is formed in each of the fourth lower positioning plates (88), the first lower positioning groove (90), the second lower positioning groove (91), the third lower positioning groove (92) and the fourth lower positioning groove (93) jointly define a lower positioning groove (94), and an upper edge (95) of the fifth lower positioning plate (89) is adjacent to the lower positioning groove (94).

10. The intravenous tube air measuring device according to any one of claims 3 to 6, wherein the air measuring device (59) is fixed on the translational base plate (13) through an air measuring fixing bracket (61), and the pressure regulating valve (60) is fixed on the upper transverse plate (41) through a pressure regulating fixing bracket (62).

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