CN114034450A - Special jig for air tightness test of medical infusion pipeline and method thereof - Google Patents
Special jig for air tightness test of medical infusion pipeline and method thereof Download PDFInfo
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- CN114034450A CN114034450A CN202111305798.7A CN202111305798A CN114034450A CN 114034450 A CN114034450 A CN 114034450A CN 202111305798 A CN202111305798 A CN 202111305798A CN 114034450 A CN114034450 A CN 114034450A
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- air
- air pressure
- infusion tube
- distribution table
- testing
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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
Abstract
The invention discloses a special jig for testing the air tightness of a medical infusion pipeline and a method thereof, relating to the medical field and aiming at the defects of inconvenient operation and long time consumption in the prior art for testing the air tightness of an injection pipeline, the air distribution table is provided with an air pressure input pipe, one end of the air pressure input pipe is used for externally connecting air pressure input, and the other end of the air pressure input pipe is communicated with an internal air passage of the air distribution table through a main path valve; the gas distribution table is also provided with a plurality of branch valves communicated with the internal gas circuits of the gas distribution table, and each branch valve is communicated to the first pneumatic connector and the second pneumatic connector of the base through a three-way connector in a one-to-one correspondence mode. The infusion tube airtightness detection device has the advantages that the infusion tube airtightness can be efficiently and visually detected by observing the numerical value of the barometer, the practicability is high, and the application is wide.
Description
Technical Field
The invention relates to a special jig for testing the air tightness of a medical infusion pipeline and a method thereof.
Background
In the medical field, the high-pressure injector is used as an auxiliary device in a radiology diagnosis and treatment system and is gradually applied clinically along with the technical development of X-rays, rapid disk changers and the like. The injection and transfusion pipeline matched with the high-pressure injector is also widely applied. A commonly used infusion tube is shown in fig. 1 and mainly comprises an output welding joint, a pipeline and a three-way welding joint which are connected in sequence; the three-way welding joint is connected with the first input welding joint and the second input welding joint through pipelines respectively. Wherein the output weld joint, the three-way weld joint, the first input weld joint and the second input weld joint are relatively hard materials and the pipe is a relatively soft material. The soft and hard joints are welded by means of UV curing. Due to the technical problems inherent in welding of soft and hard materials, the welding point K is the place most prone to air leakage.
The high-pressure injection pipeline used by a human body has very high requirement on air tightness, and each medical infusion tube needs to be subjected to air tightness detection before leaving a factory. And the high air tightness of the joint is difficult to effectively ensure at present. Secondly, checking the air tightness of the injection pipeline is inconvenient to operate, long in time consumption and large in labor, material and material investment. Therefore, it is imperative to examine the airtightness of the fluid-carrying duct with high efficiency.
Disclosure of Invention
The invention aims to provide a special jig for testing the air tightness of a medical infusion pipeline and a method thereof, which are used for solving the problems in the prior art.
The invention relates to a special fixture for air tightness test of a medical infusion pipeline, which comprises: a base and a gas distribution table;
the air distribution table is provided with an air pressure input pipe, one end of the air pressure input pipe is used for externally connecting air pressure input, and the other end of the air pressure input pipe is communicated with an internal air path of the air distribution table through a main path valve; the gas distribution table is also provided with a plurality of branch valves communicated with the internal gas circuits of the gas distribution table, and each branch valve is communicated to the first pneumatic connector and the second pneumatic connector of the base in a one-to-one correspondence manner through a three-way connector;
the base is provided with a plurality of barometers, and the number of the barometers is matched with the number of the branch valves;
a branch valve, a three-way joint, a first air pressure joint, a second air pressure joint and a nearest air pressure meter which are correspondingly connected form a testing module, and the testing module can correspondingly test the infusion tube.
Preferably, a side of the gas distribution table is fixedly connected with a side of the base far away from the first pneumatic connector, so that the gauge outfit interface, the first pneumatic connector and the second pneumatic connector are better connected.
Preferably, all the branch valves are arranged above the gas distribution table, the three-way joint horizontally extends in the direction that the branch valves are far away from the base, and the main valve is arranged at the left side end or the right side end of the gas distribution table, so that the structure of the gas distribution table is more complete.
Preferably, a table is arranged above the base and used for fixing the position of the barometer. The arrangement facilitates fixing the barometer.
Preferably, each air pressure gauge is arranged above the first air pressure joint and the second air pressure joint of the same test module, and a gauge head interface of the air pressure gauge extends away from the gas separation table along the direction of the first air pressure joint and the second air pressure joint. Thus, the air pressure gauge is visually displayed on the gauge stand.
Preferably, the gauge head interface is connected by a threaded knob. The screw knob connection can enable the output welding head to be connected more tightly.
Preferably, five test modules are arranged in parallel. Five test modules are provided to allow more selectivity.
The air tightness test method for the medical infusion pipeline is characterized in that the jig is used for testing the air tightness of the infusion pipeline.
Preferably, the method for testing the air tightness of the medical infusion pipeline comprises the following specific steps: connecting more than one infusion tube with one test module one by one, connecting an output welding head with a gauge head interface in an airtight manner, connecting a first input welding head with a first air pressure welding head in an airtight manner, and connecting a second input welding head with a second air pressure welding head in an airtight manner; the air pressure input pipe is externally connected with an air pressure input, a main path valve is opened, and a branch path valve of the connected test module is opened; reading the air pressure value of the air pressure meter; and the infusion tube corresponding to the air passage with the air pressure value lower than the threshold value is judged to be invalid in air tightness. The whole process is simple and easy to understand.
Preferably, when the medical infusion tube is subjected to air tightness test, the first air pressure connector is sealed by an air plug, and only the single-in and single-out infusion tube is communicated with the corresponding second air pressure connector and the gauge outfit interface. This is one more alternative.
The invention relates to a special jig for testing the air tightness of a medical infusion pipeline and a method thereof, which have the advantages that: the practicality is strong, uses extensively, can high-efficient audio-visual inspection transfer line gas tightness. Whether the air tightness is good or not can be judged by visually seeing whether the numerical value is within a certain threshold value or not through the display reading of the barometer, and the working efficiency is high. 5 test module of parallel arrangement are convenient for the operator to use, and the suitability is strong. The testing method comprises the steps of firstly connecting an output welding head of the infusion tube with a gauge head interface, connecting a first input welding head with a first pneumatic welding head, and connecting a second input welding head with a second pneumatic welding head, then connecting air pressure outside an air pressure input tube, opening a main valve and a branch valve corresponding to a testing module, reading the numerical value of the pneumatic gauge to know whether the air tightness of the infusion tube is good or not, and enabling the whole process to be popular and easy to understand.
Drawings
FIG. 1 is a schematic view of a prior art infusion tube;
FIG. 2 is a schematic structural view of a special fixture for airtight testing of a medical infusion tube according to the present invention;
FIG. 3 is a top view of a special fixture for testing the air tightness of a medical infusion tube according to the present invention;
FIG. 4 is a side view of a special fixture for testing the air tightness of a medical infusion tube according to the present invention;
FIG. 5 is a cross-sectional view A-A of FIG. 4;
FIG. 6 is a schematic view showing the process of connecting a jig for airtight testing of medical infusion tube to an infusion tube according to the present invention;
FIG. 7 is a schematic view of the jig for testing the air tightness of the medical infusion tube connected to all infusion tubes according to the present invention;
FIG. 8 is a top view of FIG. 7;
FIG. 9 is a sectional view taken along line B-B of FIG. 8;
fig. 10 is a cross-sectional view of C-C of fig. 8.
Reference numerals:
10-an infusion tube: 11-pipeline, 12-three-way welding head, 13-output welding head, 14-first input welding head, 15-second input welding head and K-welding position;
20-a base, 21-a meter table, 22-a barometer, 23-a meter head interface, 24-a first air pressure connector and 25-a second air pressure connector;
30-gas separation table, 31-pneumatic input pipe, 32-main valve, 33-branch valve and 34-three-way joint.
Detailed Description
As shown in fig. 1 to 5, the special fixture for testing the air tightness of the medical infusion tube of the present invention comprises: a base 20 and a gas distribution table 30. The gas distribution table 30 is provided with a gas pressure input pipe 31, one end of the gas pressure input pipe 31 is used for externally connecting gas pressure input, and the other end of the gas pressure input pipe 31 is communicated with a gas circuit inside the gas distribution table 30 through a main circuit valve 32. The gas distribution table 30 is further provided with a plurality of branch valves 33 communicated with internal gas paths thereof, and each branch valve 33 is communicated with the first pneumatic connector 24 and the second pneumatic connector 25 of the base 20 through a three-way connector 34 in a one-to-one correspondence manner. The base 20 is provided with a plurality of barometers 22, and the number of the barometers 22 is matched with the number of the branch valves 33. A branch valve 33, a three-way joint 34, a first air pressure joint 24, a second air pressure joint 25 and the nearest air pressure meter 22 which are correspondingly connected form a test module. The test module sets up 5 in parallel, makes operating personnel can be more direct operate, inserts the test module according to actual need, thereby can audio-visually see whether the reading of barometer is in certain threshold value and learn whether its gas tightness is good.
Each barometer 22 is arranged above the first pneumatic connector 24 and the second pneumatic connector 25 of the same test module, and the gauge head interface 23 of the barometer 22, the first pneumatic connector 24 and the second pneumatic connector 25 extend in a direction away from the gas distribution table 30. A meter table 21 is arranged above the base 20, and the meter table 21 is used for fixing the position of the barometer 22. Each barometer 22 is arranged above the first pneumatic connector 24 and the second pneumatic connector 25 of the same test module, so that the barometer 22 is arranged between the first pneumatic connector 24 and the second pneumatic connector 25, observation is facilitated, and the barometer is matched with the test module. The gauge head interface 23 of the air pressure gauge 22, the first air pressure joint 24 and the second air pressure joint 25 extend in the direction away from the air distribution table 30. The gauge head interface 23 is connected through a threaded knob, so that the air tightness is better when the output welding head 13 is connected.
One side of the gas distribution table 30 is fixedly connected with one side of the base 20 far away from the first pneumatic connector 24, so that the pneumatic input pipe 31 can be connected with a pneumatic input conveniently, and the input gas can be high-pressure gas. All the branch valves 33 are disposed above the gas distribution table 30, the three-way joints 34 extend horizontally in the direction in which the branch valves 33 are away from the base 20, and the main valve 32 is disposed at the left or right end of the gas distribution table 30. The main valve 32 may be positioned to facilitate the opening and closing of the bypass valve 33 by an operator.
The invention relates to a method for testing the air tightness of a medical infusion pipeline, which utilizes the jig to test the air tightness of the infusion pipeline. The working process of the jig is shown in fig. 6-an infusion tube 10.
As shown in fig. 6, one or more infusion tubes 10 are connected one by one to one test module, the output weld head 13 is connected to the gauge head port 23 in an airtight manner, the first input weld head 14 is connected to the first pneumatic joint 24 in an airtight manner, and the second input weld head 15 is connected to the second pneumatic joint 25 in an airtight manner. As shown in fig. 7, 5 test modules have been connected separately. Fig. 8 is a plan view of the infusion tube 10 and the base 20 after airtight connection. The air pressure input pipe 31 is externally connected with an air pressure input, the main path valve 32 is opened, the branch path valve 33 of the connected test module is opened, and whether the branch path valves 33 of the other test modules are in a closed state or not is checked. If the branch valves 33 of the other test modules are not closed, the branch valves are closed in time, so that the influence on the value of the barometer and the detection of the air tightness is avoided. And then reading the air pressure value of the air pressure gauge 22, and judging that the air tightness of the infusion tube 10 corresponding to the air passage with the air pressure value lower than the threshold value is invalid, or judging that the air tightness is valid.
FIG. 9 is a cross-sectional view B-B of FIG. 8, with the base 20 having a first air bonding head 24, the first air bonding head 24 being connected to the first input bonding head 14; the base 20 is also provided with a meter table 21, the meter table 21 is provided with a barometer 22 for reading a pressure value, the barometer 22 is connected with a meter head interface 23, and the meter head interface 23 is connected with the output welding head 13. Fig. 10 is a cross-sectional view of fig. 8 taken along line C-C, and a second pneumatic connector 25 is provided on the base 20, and the second pneumatic connector 25 is connected to the second input connector 15. The method for testing the air tightness of the medical infusion tube can also be used for carrying out single-port test on the infusion tube 10 with only the first input welding head 14 or the second input welding head 15. When the single-in single-out infusion tube 10 is subjected to an air tightness test, the first air pressure connector 24 is sealed by an air plug, only the single-in single-out infusion tube 10 is communicated with the corresponding second air pressure connector 25 and the gauge head interface 23, and the value of the air pressure gauge is read to know whether the value is within the threshold value. If the value is within the threshold value, the gas tightness is proved to be good, and vice versa.
It will be apparent to those skilled in the art that various other changes and modifications may be made in the above-described embodiments and concepts and all such changes and modifications are intended to be within the scope of the appended claims.
Claims (10)
1. A special fixture for testing the air tightness of a medical infusion pipeline is characterized by comprising a base (20) and an air distribution table (30);
the gas distribution table (30) is provided with an air pressure input pipe (31), one end of the air pressure input pipe (31) is used for externally connecting air pressure input, and the other end of the air pressure input pipe is communicated with an internal air passage of the gas distribution table (30) through a main passage valve (32); the gas distribution table (30) is also provided with a plurality of branch valves (33) communicated with internal gas paths of the gas distribution table, and each branch valve (33) is respectively communicated to the first pneumatic connector (24) and the second pneumatic connector (25) of the base (20) through a three-way connector (34) in a one-to-one correspondence manner;
the base (20) is provided with a plurality of barometers (22), and the number of the barometers (22) is matched with the number of the branch valves (33);
a branch valve (33), a three-way joint (34), a first air pressure joint (24), a second air pressure joint (25) and the nearest air pressure meter (22) which are correspondingly connected form a testing module.
2. The jig special for the airtightness test of the medical infusion tube according to claim 1, wherein one side surface of the gas distribution table (30) is fixedly connected with one side surface of the base (20) far away from the first pneumatic connector (24).
3. The special device for testing the air tightness of the medical infusion tube according to claim 2, wherein all the branch valves (33) are arranged above the air distribution table (30), the three-way joint (34) horizontally extends in the direction that the branch valves (33) are far away from the base (20), and the main valve (32) is arranged at the left side end or the right side end of the air distribution table (30).
4. The jig special for the airtightness test of the medical infusion tube according to claim 1, wherein a table (21) is arranged above the base (20), and the table (21) is used for fixing the position of the barometer (22).
5. The jig special for the airtightness test of the medical infusion tube according to claim 1, wherein each barometer (22) is disposed above the first barometric joint (24) and the second barometric joint (25) of the same test module, and the meter head interface (23) of the barometer (22) extends away from the air distribution table (30) along with the first barometric joint (24) and the second barometric joint (25).
6. The jig special for the airtightness test of the medical infusion tube according to claim 1, wherein the gauge head interface (23) is connected by a screw knob.
7. The jig as claimed in claim 1, wherein five test modules are disposed in parallel.
8. A method for testing the air tightness of a medical infusion tube, which is characterized in that the jig according to any one of claims 1 to 7 is used for testing the air tightness of the infusion tube.
9. The method for testing the air tightness of the medical infusion tube according to claim 8, which comprises the following steps: more than one infusion tube (10) is connected in a one-to-one correspondence mode with one test module, an output welding head (13) is connected with a gauge head interface (23) in an airtight mode, a first input welding head (14) is connected with a first air pressure welding head (24) in an airtight mode, and a second input welding head (15) is connected with a second air pressure welding head (25) in an airtight mode; the air pressure input pipe (31) is externally connected with an air pressure input, a main path valve (32) is opened, and a branch path valve (33) of the connected test module is opened; reading the air pressure value of the air pressure meter (22); and the infusion tube (10) corresponding to the air passage with the air pressure value lower than the threshold value is judged to be invalid in air tightness.
10. The method for testing the air tightness of the medical infusion tube according to claim 8, wherein when the single-in single-out infusion tube (10) is tested for air tightness, the first pneumatic connector (24) is closed by a pneumatic plug, and only the single-in single-out infusion tube (10) is communicated with the corresponding second pneumatic connector (25) and the gauge outfit interface (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111305798.7A CN114034450A (en) | 2021-11-05 | 2021-11-05 | Special jig for air tightness test of medical infusion pipeline and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111305798.7A CN114034450A (en) | 2021-11-05 | 2021-11-05 | Special jig for air tightness test of medical infusion pipeline and method thereof |
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| Publication Number | Publication Date |
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| CN114034450A true CN114034450A (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111305798.7A Pending CN114034450A (en) | 2021-11-05 | 2021-11-05 | Special jig for air tightness test of medical infusion pipeline and method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114964639A (en) * | 2022-07-22 | 2022-08-30 | 江苏治宇医疗器材有限公司 | Air measurement detection device of infusion apparatus catheter |
-
2021
- 2021-11-05 CN CN202111305798.7A patent/CN114034450A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114964639A (en) * | 2022-07-22 | 2022-08-30 | 江苏治宇医疗器材有限公司 | Air measurement detection device of infusion apparatus catheter |
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