CN113952590A - Catheter airway movement assembly - Google Patents
Catheter airway movement assembly Download PDFInfo
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- CN113952590A CN113952590A CN202011197861.5A CN202011197861A CN113952590A CN 113952590 A CN113952590 A CN 113952590A CN 202011197861 A CN202011197861 A CN 202011197861A CN 113952590 A CN113952590 A CN 113952590A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
- A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
- G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2209/00—Ancillary equipment
- A61M2209/02—Equipment for testing the apparatus
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
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Abstract
The invention relates to a guide pipe ventilation moving assembly which comprises a gas measurement translation bottom plate, a gas measurement translation plate and a gas meter, wherein a plurality of gas measurement guide rails are installed on the gas measurement translation bottom plate, a plurality of gas measurement slide blocks are installed on the gas measurement translation plate and matched with the gas measurement guide rails, a gas measurement translation cylinder is further installed on the gas measurement translation bottom plate and drives the gas measurement translation plate to move, a gas measurement core rod fixing block is installed on the gas measurement translation plate, a plurality of ventilation core rods are arranged in the gas measurement core rod fixing block, ventilation holes are formed in the ventilation core rods in a penetrating mode, a first ventilation pipe is connected between the ventilation holes and the gas meter, and the gas meter ventilates into a guide pipe through the first ventilation pipe and the ventilation holes. The invention automatically completes the inflation of the conduit, prepares for the subsequent detection of the leakage detection of the conduit, has convenient operation, does not need manual participation and prevents the conduit from being polluted.
Description
Technical Field
The invention relates to a catheter ventilation moving assembly, and belongs to the technical field of medical instruments.
Background
The catheter is a general term of a lumen product for communicating two objects, and the catheter is widely applied to medical treatment and daily life and has a large demand. In order to ensure the normal work of the conduit, the conduit needs to be subjected to tightness detection before leaving a factory to detect whether the conduit leaks air or not. At present, the detection of air leakage of the conduit is generally to seal and inflate the conduit, and put the conduit into water to see whether bubbles are generated or not for detection. Wherein, the inflation process needs manual work, the operation is troublesome, and the pollution of the conduit is easy to cause. Medical catheters required for medical treatment cannot be used once being polluted, a plurality of parts are usually arranged on the medical catheters, the polluted medical catheters are scrapped, a large amount of materials are wasted, and the production cost is increased. Taking a venous tube used in hemodialysis as an example, the venous tube comprises a drip chamber, one end of the drip chamber is connected with a puncture needle connector through a connecting hose, the other end of the drip chamber is provided with three connecting hoses, and the three connecting hoses are respectively connected with a dialysis connector, a sensor and a female needle base.
Disclosure of Invention
It is an object of the present invention to address the shortcomings of the prior art by providing a catheter airway movement assembly that automatically completes the inflation of a catheter.
The technical scheme adopted by the invention for realizing the purpose is as follows:
the guide pipe ventilation moving assembly comprises a gas measurement translation bottom plate, a gas measurement translation plate and a gas meter, wherein a plurality of gas measurement guide rails are installed on the gas measurement translation bottom plate, a plurality of gas measurement sliding blocks are installed on the gas measurement translation plate and matched with the gas measurement guide rails, a gas measurement translation cylinder is further installed on the gas measurement translation bottom plate and drives the gas measurement translation plate to move, a gas measurement core rod fixing block is installed on the gas measurement translation plate, a plurality of ventilation core rods are arranged in the gas measurement core rod fixing block, vent holes are formed in the ventilation core rods in a penetrating mode, a first vent pipe is connected between the vent holes and the gas meter, and the gas meter is used for ventilating the interior of the guide pipe through the first vent pipe and the vent holes.
As a further optimization of the above technical solution: one end of the ventilation core rod penetrates through the air measurement core rod fixing block and is provided with a ventilation needle rod, and the head of the ventilation needle rod is matched with the catheter.
As a further optimization of the above technical solution: and the tail part of the ventilation needle rod is provided with a sealing gasket.
As a further optimization of the above technical solution: the tail part of the ventilation needle rod is provided with a ventilation head, and the sealing washer is positioned on the ventilation head.
As a further optimization of the above technical solution: the air measuring core rod fixing block is provided with a plurality of first core rod holes, the air vent core rod is positioned in the first core rod holes, the first core rod holes comprise large holes and small holes communicated with the large holes, and core rod steps are formed between the large holes and the small holes.
As a further optimization of the above technical solution: the side face, provided with the large hole, of the gas measuring core rod fixing block is provided with a gas measuring cover plate, the gas measuring cover plate is provided with a plurality of second core rod holes, the second core rod holes correspond to the large hole in a one-to-one mode, and the diameter of each second core rod hole is smaller than that of the large hole.
As a further optimization of the above technical solution: one end of the ventilation core rod is positioned in the second core rod hole, the ventilation core rod can move in the first core rod hole and the second core rod hole, the middle of the ventilation core rod is provided with a circle of ventilation convex blocks, the ventilation convex blocks are positioned in the large holes and tightly attached to the core rod steps, the ventilation core rod is further sleeved with a ventilation spring, the ventilation spring is positioned in the large holes, one end of the ventilation spring is abutted against the ventilation convex blocks, and the other end of the ventilation spring is abutted against the air measuring cover plate.
As a further optimization of the above technical solution: the piston rod of the air measurement translation cylinder is installed on the air measurement translation plate, air measurement buffers are further arranged on two sides of the air measurement translation cylinder, and air measurement limiting nuts are sleeved on the air measurement buffers.
As a further optimization of the above technical solution: the gas meter also comprises a pressure regulating valve, and a second vent pipe is connected between the pressure regulating valve and the gas meter.
As a further optimization of the above technical solution: the ventilation core rod is fixed with the air measurement core rod fixing block.
Compared with the prior art, the automatic gas filling device automatically completes gas filling of the guide pipe, prepares for subsequent detection of gas leakage detection of the guide pipe, is convenient to operate, does not need manual participation, and prevents the guide pipe from being polluted.
Drawings
Fig. 1 is a schematic structural view of the intravenous tube leak detection device of the present invention.
Fig. 2 is a schematic perspective view of the air blocking mechanism in the venous tube leak detection device of the present invention.
Fig. 3 is a schematic perspective view of another view of the air blocking mechanism of the venous catheter air leakage detection device of the present invention.
Fig. 4 is a schematic diagram of the structure at a in fig. 3.
Fig. 5 is a schematic perspective view of the air-measuring moving assembly of the present invention.
Fig. 6 is a perspective structure schematic diagram of the air measuring core bar fixing block of the invention.
Fig. 7 is a schematic perspective view of the fitting of the gas shutoff core rod and the gas shutoff spring in the venous catheter gas leakage detection device of the invention.
Fig. 8 is a schematic structural view of a guiding and positioning assembly in the venous catheter leak detection device of the present invention.
Fig. 9 is a schematic diagram of the configuration of the upper and lower alignment assemblies and the upper and lower positioning plates of the intravenous tube leak detector of the present invention.
Fig. 10 is a schematic structural view of the ventilation mechanism of the present invention.
Figure 11 is a schematic perspective view of the vent core pin and vent spring of the present invention in combination.
Fig. 12 is a schematic perspective view of the upper positioning plate set in the venous tube leakage detection device of the present invention.
Detailed Description
The invention is further described with reference to the following figures and detailed description. As shown in fig. 1-12, an intravenous tube leak detection device using the present invention includes a gas block mechanism 1 and a vent mechanism 2. The air blocking mechanism 1 and the ventilation mechanism 2 both comprise an air measuring component 4 and a guiding and positioning component 5. The following is an embodiment of matching the venous tube leakage detection device with a venous tube, wherein the guiding and positioning component 5 is used for clamping a connecting hose on the venous tube, the ventilation mechanism 2 is communicated with a dialysis connector in the venous tube, and the air blocking mechanism 1 is used for blocking a puncture needle connector in the venous tube. The length of the connection hose in the venous line is shortened in fig. 1.
In the above technical scheme: the air measurement component 4 comprises two air measurement backing plates 48, air measurement side plates 411 are arranged on two sides of each air measurement backing plate 48, and an air measurement translation bottom plate 410 is arranged on the tops of the air measurement side plates 411. Four groups of air measurement moving assemblies are arranged on the air measurement translation bottom plate 410, and each group of air measurement moving assembly comprises an air measurement translation plate 43 and two air measurement guide rails 41 arranged on the air measurement translation bottom plate 410. As shown in fig. 5, a plurality of air measuring sliders 42 are mounted at the bottom of the air measuring translation plate 43, and the air measuring sliders 42 are matched with the air measuring guide rail 41. The air measurement moving assembly further comprises an air measurement translation cylinder 44 installed on the air measurement translation bottom plate 410, and a piston rod of the air measurement translation cylinder 44 is installed on the air measurement translation plate 43. Two air measurement buffer blocks 45 are further mounted on two sides of the air measurement translation cylinder 44, an air measurement buffer 46 is mounted on each air measurement buffer block 45, and an air measurement limiting nut 461 is sleeved on each air measurement buffer 46. The gasometer 46 is commercially available directly, and the construction of the gasometer 46 is prior art. When the air measurement translation cylinder 44 drives the air measurement translation plate 43 to move towards the direction of the air measurement translation cylinder 44, the air measurement buffer 46 plays a limiting role; the gas measurement limiting nut 461 plays a role in auxiliary limiting, and prevents the gas measurement translation plate 43 from moving excessively after the gas measurement buffer 46 fails.
In the above technical scheme: the air measurement translation plate 43 is fixed with an air measurement core rod fixing block 47, and the air measurement core rod fixing block 47 is provided with four first core rod holes, as shown in fig. 6, each first core rod hole comprises a large hole 471 and a small hole 472, and a core rod step 473 is formed between the large hole 471 and the small hole 472. An air measurement cover plate 49 is fixed on the side face, provided with the large hole 471, of the air measurement core rod fixing block 47, a second core rod hole is formed in the air measurement cover plate 49 and corresponds to the large hole 471 one to one, and the diameter of the second core rod hole is smaller than that of the large hole 471.
In the above technical scheme: the air-blocking core rod 6 is arranged in the first core rod hole in the air-blocking mechanism 1, the middle part of the air-blocking core rod 6 is provided with a circle of air-blocking convex blocks 61, as shown in fig. 7, one end of the air-blocking core rod 6 is provided with a convex air-blocking head 62, and the other end of the air-blocking core rod 6 is positioned in the second core rod hole. The air blocking protrusion 61 is located in the large hole 471 and is closely attached to the step 473 of the core rod. The gas blocking core rod 6 is further sleeved with a gas blocking spring 7, the gas blocking spring 7 is located in the large hole 471, one end of the gas blocking spring 7 is abutted to the gas blocking convex block 61, and the other end of the gas blocking spring is abutted to the gas measuring cover plate 49. As shown in fig. 2, the gas shutoff head 62 passes through the small hole 472, a first sealing gasket 12 is arranged on the gas shutoff head 62, and the first sealing gasket 12 is matched with the puncture needle connector to realize the sealing of the puncture needle connector. In this embodiment, the gas shutoff core rod 6 can move in the first core rod hole and the second core rod hole; in actual operation, the air blocking core bar 6 can be fixed on the air measuring core bar fixing block 47. The air measurement translation cylinder 44 drives the air measurement translation plate 43, the air measurement core rod fixing block 47 and the air measurement cover plate 49 to move towards the direction of the ventilation mechanism 2, the air measurement cover plate 49 extrudes the air blocking spring 7, and the elasticity of the air blocking spring 7 is released towards the direction of the ventilation mechanism 2, so that the air blocking core rod 6 and the first sealing washer 12 are driven to move. Rigid force of the air measurement translation cylinder 44 is converted into flexible force by arranging the air blocking spring 7, so that the moving process of the air blocking core rod 6 is more controllable, and the air blocking core rod 6 is prevented from moving too fast to collide with a puncture needle joint to cause venous tube damage. After the air blockage is finished, the air measurement translation cylinder 44 drives the air measurement core rod fixing block 47 to move in the direction far away from the ventilation mechanism 2, the air blockage core rod 6 is driven by the core rod step 473 to move synchronously until the air measurement translation plate 43 is limited by the air measurement buffer 46, and the air measurement translation cylinder 44 stops operating.
In the above technical scheme: a ventilation core rod 8 is arranged in a first core rod hole in the ventilation mechanism 2, a circle of ventilation convex block 81 is arranged in the middle of the ventilation core rod 8, as shown in fig. 11, one end of the ventilation core rod 8 is provided with a convex ventilation head 82, and the other end of the ventilation core rod 8 is positioned in a second core rod hole. One end of the ventilation head 82 is provided with a ventilation needle rod 83, and a ventilation hole 84 penetrates through the ventilation core rod 8. The venting boss 81 is located within the large aperture 471 and abuts the stem step 473. The ventilation core rod 8 is also sleeved with a ventilation spring 9, the ventilation spring 9 is positioned in the large hole 471, one end of the ventilation spring 9 is abutted against the ventilation convex block 81, and the other end of the ventilation spring 9 is abutted against the air measurement cover plate 49. As shown in fig. 10, the venting head 82 passes through the aperture 472 and is provided with a second sealing gasket 11, and the venting spike 83 passes through the second sealing gasket 11. In this embodiment, the ventilation core rod 8 is matched with the dialysis connector, the ventilation needle rod 83 extends into the dialysis connector, and the second sealing washer 11 is tightly attached to the end of the dialysis connector to prevent the gas introduced into the venous tube from leaking out of the end of the dialysis connector during inflation, which results in inaccurate detection. In this embodiment, the breather core rod 8 can move in the first core rod hole and the second core rod hole; in practical operation, the ventilation core bar 8 can be fixed on the air measurement core bar fixing block 47.
In the above technical scheme: as shown in fig. 10, the ventilation mechanism 2 further includes an air meter 14, and eight sets of the air meter 14 are provided. Two air vents are arranged on the air detector 14, each air vent is provided with a first air pipe, and each first air pipe is communicated with an air vent 84 in the air vent core rod 8. The first vent pipe is omitted in fig. 1 and 10 to show the structure more clearly.
In the above technical scheme: the ventilation mechanism 2 is also provided with four pressure regulating valve fixing plates 10, and each pressure regulating valve fixing plate 10 is provided with two groups of pressure regulating valves 13, namely eight groups of pressure regulating valves. A second vent pipe is communicated between the pressure regulating valve 13 and the gas meter 14, and the gas is regulated by the pressure regulating valve 13 and then sent into the gas meter 14, and the second vent pipe is omitted in fig. 1 and 10 to show the structure more clearly.
In the above technical scheme: as shown in fig. 2, 3, 8 and 9, the guiding and positioning assembly 5 includes two positioning pads 51, positioning side plates 52 are mounted on the positioning pads 51, and one positioning side plate 52 is omitted in fig. 8 for better illustration of the structure. The positioning side plate 52 is provided with an upper alignment fixing plate 53 and a lower alignment fixing plate 54. Four sets of upper alignment assemblies 55 are provided on the upper alignment fixture plate 53 and four sets of lower alignment assemblies 56 are provided on the lower alignment fixture plate 54.
In the above technical scheme: as shown in fig. 8, the upper alignment assembly 55 includes an upper alignment cylinder fixing plate 551 mounted on the upper alignment fixing plate 53 and two upper alignment slide rails 552. The upper alignment assembly 55 further includes an upper positioning fixture plate 554 and an upper pressure plate 5510, wherein an upper alignment slide 553 is mounted at both ends of one side surface of the upper positioning fixture plate 554, and the upper alignment slide 553 is engaged with the upper alignment slide 552. An upper pressure plate slide rail 556 is installed at two ends of one side surface of the upper pressure plate 5510, an upper pressure plate slide block 555 is installed at two ends of the other side surface of the upper positioning fixing plate 554, and the upper pressure plate slide block 555 is matched with the upper pressure plate slide rail 556. An upper cylinder backing plate 5514 is arranged at the top of the upper alignment cylinder fixing plate 551, and a pressure regulating valve fixing plate 10 on the ventilation mechanism 2 is arranged on the upper cylinder backing plate 5514. An upper positioning cylinder 5511 is installed at the bottom of the upper cylinder base plate 5514, and a piston rod of the upper positioning cylinder 5511 is connected with an upper cylinder joint 557. An upper positioning connecting block 5512 is installed in the middle of the upper positioning fixing plate 554, a U-shaped upper positioning groove is formed in a portion of the upper positioning connecting block 5512 penetrating through the upper alignment fixing plate 53, as shown in fig. 4, an upper positioning block 5571 is formed at one end of the upper cylinder joint 557, and an upper positioning plate 5572 is formed at the bottom of the upper positioning block 5571. The upper positioning block 5571 is located in the upper positioning groove, the upper positioning plate 5572 is located below the upper positioning groove, and the upper surface of the upper positioning plate 5572 is closely attached to the lower surface of the upper positioning connection block 5512. An upper pressure plate cylinder 5513 is further mounted on the upper cylinder backing plate 5514, and a piston rod of the upper pressure plate cylinder 5513 is connected with the upper pressure plate 5510. The upper positioning cylinder 5511 drives the upper positioning fixing plate 554 to move up and down through the matching between the upper cylinder joint 557 and the upper positioning connecting block 5512, and the piston rod of the upper pressing plate cylinder 5513 drives the upper pressing plate 5510 to move up and down. An upper press block 558 is mounted at the bottom of the upper press plate 5510, the upper press block 558 includes a fixing portion 5581 and a plurality of gripping portions 5582 perpendicular to the fixing portion 5581, an arc-shaped gripping groove 5583 is formed at the bottom of the gripping portion 5582, and four gripping grooves 5583 are formed in the embodiment.
In the above technical scheme: the lower alignment assembly 56 has the same structure as the upper alignment assembly 55 described above, and the lower alignment assembly 56 is disposed opposite the upper alignment assembly 55.
In the above technical scheme: as shown in fig. 9, an upper positioning plate set 559 is mounted at the bottom of the upper positioning fixing plate 554, the upper positioning plate set 559 is formed by alternately splicing a plurality of W-shaped first upper positioning plates 5593 and a plurality of M-shaped second upper positioning plates 5594, a plurality of upper notches 5591 are formed in the upper positioning plate set 559, and the upper positioning cylinder 5511 drives the upper positioning plate set 559 to move up and down. The lower alignment assembly 56 includes a lower positioning plate set 561, and the lower positioning plate set 561 is formed by alternately splicing a plurality of W-shaped first lower positioning plates and a plurality of M-shaped second lower positioning plates. The first upper positioning plate 5593 corresponds to the second lower positioning plate, and the second upper positioning plate 5594 corresponds to the first lower positioning plate. The upper positioning plate group and the lower positioning plate group are formed by alternately splicing a plurality of W-shaped positioning plates and M-shaped positioning plates, so that corresponding guide grooves are formed, the upper positioning plate group and the lower positioning plate group play a better role in guiding when being closed, and venous tubes are prevented from being damaged by clamping. The lower positioning plate set 561 is provided with a lower notch 5611 corresponding to the upper notch 5591, and the upper notch 5591 and the lower notch 5611 are responsible for clamping the venous tube. The upper positioning plate group 559 is also provided with a plurality of upper matching holes 5592, the lower positioning plate group 561 is also correspondingly provided with lower matching holes 5612, and the upper matching holes 5592 and the lower matching holes 5612 prevent the upper positioning plate 559 and the lower positioning plate 561 from interfering when being closed.
In the above technical scheme: and a transmission assembly 3 is also arranged below the air measuring assembly 4 and the guiding and positioning assembly 5. As shown in fig. 2 and 3, the transmission assembly 3 includes a movable bottom plate 310 and a fixed bottom plate 319 fixed on the stand, two slide rail support plates 31 are installed on the fixed bottom plate 319, an air measurement slide rail 32 is installed on the top of each slide rail support plate 31, a plurality of air measurement sliders 33 are installed at two ends of the bottom of the movable bottom plate 310, and the air measurement sliders 33 are matched with the air measurement slide rails 32. The fixed base plate 319 is provided with a moving motor 35 through a motor mounting plate 34, and the moving motor 35 drives the moving base plate 320 to move through a ball screw 36. As shown in fig. 3, in order to show the structure more clearly, the fixing base plate 319 is deleted, and the ball screw 36 includes a screw 361 and a nut 362 fitted over the screw 361. The nut mounting base 37 is mounted on the bottom of the movable base plate 320, and the nut 362 is fixed on the nut mounting base 37. The fixed bottom plate 319 is further provided with two screw rod supporting seats 39, and the screw rod supporting seats 39 are mounted on the fixed bottom plate 319 through screw rod base plates 38. One end of the screw 361 passes through one of the screw supports 39 to be connected to the rotation shaft of the moving motor 35, and the other end passes through the nut 362 to be installed in the other screw support 39. A screw rod shield 310 is also arranged above the two screw rod supporting seats 39. The frame is further provided with a tow chain support plate 311, the moving bottom plate 320 is provided with a tow chain connecting plate 312, two ends of the tow chain 313 are respectively arranged on the tow chain support plate 311 and the tow chain connecting plate 312, and the tow chain 313 is not connected with the tow chain connecting plate 312 in order to show the structure more clearly in fig. 1 and 2. As shown in fig. 3, three sensor fixing plates 314 are installed on a side surface of one of the slide rail support plates 31, a first limit sensor 315, a second limit sensor 316 and a zero point sensor 317 are respectively installed on the three sensor fixing plates 314, the zero point sensor 317 is located between the first limit sensor 315 and the second limit sensor 316, and a sensing piece 318 is installed on a side surface of the moving base plate 320. The first limit sensor 315, the second limit sensor 316 and the sensing piece 318 are used for limiting the moving distance of the ball screw 36, and the zero point sensor 317 and the sensing piece 318 are used for helping the moving motor 35 to find the zero point. When the moving motor 35 returns to the zero position, the zero sensor 317 senses the sensing piece 318 exactly, and the zero sensor 317 gives a detection signal to stop the moving motor 35 at the zero position.
The working process of the invention is as follows, firstly, the venous tube is placed between the air blocking mechanism 1 and the ventilation mechanism 2, the upper and lower positioning plates 559, 561 in the air blocking mechanism 1 are matched with the connecting hose connected with the puncture needle connector in the clamping venous tube, and the upper and lower positioning plates 559, 561 in the ventilation mechanism 2 are matched with the connecting hose connected with the dialysis connector in the clamping venous tube. The ends of the other two connecting hoses in the venous line are plugged by sensors or a female needle base cap. The upper and lower aligning components in the air blocking mechanism 1 are matched to clamp the end part of the puncture needle joint, and the upper and lower aligning components in the ventilation mechanism 2 are matched to clamp the end part of the dialysis joint. The air measurement moving assembly of the air blocking mechanism 1 drives the air blocking core rod 6 and the first sealing washer 12 to move towards the direction of the ventilation mechanism 2 until the first sealing washer 12 is attached to the puncture needle joint, so that the puncture needle joint is sealed. The air measuring moving assembly of the ventilation mechanism 2 drives the ventilation core rod 8 and the second sealing washer 11 to move towards the direction of the air blocking mechanism 1 until the ventilation needle rod 83 extends into the dialysis connector, and the second sealing washer 11 is tightly attached to the dialysis connector. The gas enters the gas meter 14 after being regulated by the pressure regulating valve 13, and the gas meter 14 sends the gas into a connecting hose connected with a dialysis connector through the vent hole 84, so that the gas fills the whole venous pipe. After a certain amount of gas is introduced, the gas in the venous tube reaches a certain pressure, the gas detector 14 automatically stops the gas introduction, and the pressure maintaining is started in the venous tube. The gas detector 14 automatically blocks the passage between the venous tube and the pressure maintaining process, and gas in the venous tube is prevented from flowing backwards. The pressure maintaining enables the leaking venous tube to have enough time to leak the gas in the pipeline, the result caused by the gas leakage phenomenon can be more obviously reflected in the final measured value, and the gas detector 14 judges the gas pressure in the venous tube after the pressure maintaining is carried out for a certain time. Each gas meter 14 is matched with two venous pipes, and each gas meter 14 adopts a pairwise comparison method to judge whether the product has a gas leakage phenomenon: if the difference value of the measured values of the two venous tubes is within the set range, the product is qualified; and if the difference value of the measured values of the two venous tubes exceeds the set range, judging that the two venous tubes are not qualified.
The above is only one application of the present invention, and the present invention can be used in other applications where the air leakage of the catheter is determined by ventilating the sealed catheter and measuring whether the air pressure in the catheter is stable.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concept of the present invention should fall within the scope of the present invention.
Claims (10)
1. The guide pipe ventilation moving assembly is characterized by comprising a gas measurement translation bottom plate (410), a gas measurement translation plate (43) and a gas meter (84), wherein a plurality of gas measurement guide rails (41) are installed on the gas measurement translation bottom plate (410), a plurality of gas measurement sliding blocks (42) are installed on the gas measurement translation plate (43), the gas measurement sliding blocks (42) are matched with the gas measurement guide rails (41), a gas measurement translation cylinder (44) is also installed on the gas measurement translation bottom plate (410), the gas measurement translation cylinder (44) drives the gas measurement translation plate (43) to move, a gas measurement core rod fixing block (47) is installed on the gas measurement translation plate (43), a plurality of ventilation core rods (8) are arranged in the gas measurement core rod fixing block (47), vent holes (84) are formed in the ventilation core rods (8) in a penetrating manner, and a first vent pipe is connected between the vent holes (84) and the gas meter (14), the air meter (14) vents the conduit through the first vent tube and the vent hole (84).
2. The catheter venting movement assembly of claim 1 wherein one end of the vent stem (8) passes through the vent stem mounting block (47) and is formed with a vent needle shaft (83), the head of the vent needle shaft (83) engaging the catheter.
3. The catheter vent movement assembly of claim 2, wherein the vent needle shaft (83) is provided with a sealing gasket (11) at its rear.
4. The catheter venting movement assembly of claim 3, wherein the vent needle shaft (83) is formed with a vent head (82) at its rear end, the sealing gasket (11) being located on the vent head (82).
5. The catheter vent shifting assembly of any of claims 1-4, wherein the mandrel mount block (47) has a plurality of first mandrel holes formed therein, the vent mandrel (8) being positioned within the first mandrel holes, the first mandrel holes comprising a larger hole (471) and an smaller hole (472) communicating with the larger hole, the larger hole (471) and the smaller hole (472) defining a mandrel step (473) therebetween.
6. The catheter ventilation moving assembly according to claim 5, wherein a gas measuring cover plate (49) is installed on the side surface of the large hole (471) formed in the gas measuring core rod fixing block (47), a plurality of second core rod holes are formed in the gas measuring cover plate (49), the second core rod holes correspond to the large hole (471) in a one-to-one mode, and the diameter of each second core rod hole is smaller than that of the large hole (471).
7. The catheter ventilation moving assembly according to claim 6, wherein one end of the ventilation core rod (8) is located in the second core rod hole, the ventilation core rod (8) can move in the first core rod hole and the second core rod hole, a circle of ventilation convex block (81) is formed in the middle of the ventilation core rod (8), the ventilation convex block (81) is located in the large hole (471) and clings to the core rod step (473), a ventilation spring (9) is further sleeved on the ventilation core rod (8), the ventilation spring (9) is located in the large hole (471), one end of the ventilation spring (9) is in contact with the ventilation convex block (81), and the other end of the ventilation spring is in contact with the gas measuring cover plate (49).
8. The catheter ventilation moving assembly according to claim 1, wherein a piston rod of the air measurement translation cylinder (44) is mounted on the air measurement translation plate (43), air measurement buffers (46) are further disposed on two sides of the air measurement translation cylinder (44), and an air measurement limit nut (461) is sleeved on each air measurement buffer (46).
9. The catheter ventilation shifting assembly of claim 1, further comprising a pressure regulating valve (13), a second vent connected between the pressure regulating valve (13) and the insufflator (14).
10. The catheter venting movement assembly of claim 1, wherein the vent pin (8) is secured to the breath pin securing block (47).
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| CN113952590B (en) | 2023-10-20 |
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