Infusion set catheter air leak detection structure

Abstract

The utility model relates to infusion apparatus catheter technical field, and disclose a kind of infusion apparatus catheter air leakage detection structure, including first sleeve and second sleeve, respectively install in the both ends of the catheter to be measured, pressure sensor and pressure piece are inlaid in the first sleeve, the end of the second sleeve is connected with gas injection pipe, pressure piece is pressed after pressure sensor, and the connecting section of the first sleeve and second sleeve is equipped with airbag sealing ring;Gas supply part is used to send gas to airbag sealing ring;Support piece, the first sleeve and second sleeve are equipped with support piece in;The utility model is inflated by airbag sealing ring, and the first sleeve and second sleeve are equipped with two airbag sealing rings, double sealing guarantee, effectively avoid the influence of detection result of connecting place air leakage, and support piece is supported from inner end catheter end, prevent its curling and cause air leakage, further exclude the detection error caused by non-catheter itself problem.

Description

Technical Field

[0001] This utility model relates to the field of infusion set catheter technology, and in particular to an infusion set catheter leakage detection structure. Background Technology

[0002] As a widely used medical device in clinical treatment, the sealing of the infusion set catheter is directly related to the safety of infusion. If there is an air leakage problem in the catheter, it will not only lead to the interruption of drug delivery and affect the treatment effect, but may also allow outside air to enter the blood vessels and cause serious medical accidents such as air embolism. Therefore, strict air leakage detection of infusion set catheters is a key link to ensure medical safety.

[0003] Currently, existing methods for detecting leaks in infusion tubing have many shortcomings:

[0004] Poor sealing effect: Traditional testing devices often use rubber sealing rings to directly compress and seal the connection between the device and the conduit. However, due to the softness of the conduit material and the variety of specifications, the sealing rings are difficult to fully adapt to conduits of different diameters, which can easily lead to gaps at the connection and cause air leakage, thereby interfering with the accuracy of the test results.

[0005] The end of the conduit is prone to deformation: When installing the conduit, its end is prone to curling or twisting towards the center due to its own softness, which makes it impossible for the connection between the conduit and the detection device to fit tightly, forming a leak point that is not a quality problem of the conduit itself, causing detection errors. Utility Model Content

[0006] This invention proposes a leakage detection structure for infusion set catheters to solve the problems of poor sealing effect and easy deformation of the catheter ends in existing infusion set catheters.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a leakage detection structure for an infusion set catheter, comprising:

[0008] The first sleeve and the second sleeve are respectively installed at both ends of the tube to be tested. The first sleeve is equipped with a pressure sensor and a pressure-blocking component. The end of the second sleeve is connected to an air injection tube. The pressure-blocking component presses against the pressure sensor after being pressed. The connecting section of the first sleeve and the second sleeve is equipped with an airbag sealing ring.

[0009] An air supply unit, used to deliver gas to the airbag sealing ring;

[0010] Support components are provided inside both the first sleeve and the second sleeve. When connecting the test tube, the end of the test tube is supported from the inside by the support components.

[0011] Preferably, the pressing element includes a piston block, and an elastic pressure column is connected to the end of the piston block facing the pressure sensor.

[0012] Preferably, a second spring is provided on the outside of the elastic pressure column.

[0013] Preferably, the gas supply component includes:

[0014] An air supply branch pipe, the two ends of which are respectively connected to the airbag sealing rings on the first sleeve and the second sleeve;

[0015] The main gas supply pipe is connected to the branch gas supply pipe.

[0016] Preferably, the support member includes:

[0017] The frustum-shaped body is connected to the piston block via a connecting rod;

[0018] Multiple V-shaped smooth plates are arranged in a circular array around the periphery of the frustum, and the V-shaped smooth plates are retractable.

[0019] Preferably, the outer wall of the frustum is provided with grooves in a ring array, a connecting post is connected to the V-shaped smooth plate, and a first spring is connected between the end of the connecting post and the bottom of the groove.

[0020] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0021] (1) This application uses an airbag sealing ring to press the test tube tightly, and two airbag sealing rings are provided on the first and second sleeves, providing double sealing protection and effectively avoiding air leakage at the connection point from affecting the test results; the support member supports the end of the tube from the inside to prevent it from curling up and causing air leakage, further eliminating test errors caused by problems other than the tube itself.

[0022] (2) In this application, the V-shaped smooth plate in the support is telescopic through the first spring, which can support and limit catheters of different diameters, so that the detection structure can be applied to the detection of various infusion set catheters. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0026] Figure 3This is an exploded structural diagram of the first sleeve of this utility model;

[0027] Figure 4 This is an exploded structural diagram of the support component of this utility model;

[0028] Figure 5 This is a structural diagram of the present invention in use;

[0029] In the diagram: 1. First sleeve; 2. Second sleeve; 3. Inflation pipe; 4. Inflation branch pipe; 5. Inflation main pipe; 6. Airbag sealing ring;

[0030] 7. Support component; 71. Frustum; 72. V-shaped smooth plate; 73. Groove; 74. Connecting column; 75. First spring;

[0031] 8. Pressing component; 81. Piston block; 82. Elastic pressure column; 83. Second spring;

[0032] 9. Pressure sensor. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] like Figures 1-5As shown, an infusion set catheter leakage detection structure includes a first sleeve 1 and a second sleeve 2, an air supply component, and a support component 7. The first sleeve 1 and the second sleeve 2 are respectively installed at both ends of the catheter a to be tested. One end of the first sleeve 1 is open, and the other end is sealed. The open end facilitates the insertion of the catheter a to be tested, while the sealed end creates a relatively closed space for detection, ensuring the accuracy of pressure detection. The first sleeve 1 is embedded with a pressure sensor 9 and a pressure-blocking component 8. When the pressure-blocking component 8 is pressed, it presses against the pressure sensor 9. The embedded pressure sensor 9 is a high-precision strain gauge sensor, which can sensitively capture minute pressure changes. It is also equipped with a controller (not shown). The pressure sensor 9 converts the pressure signal into an electrical signal and feeds it back to the controller. The controller has a built-in advanced data analysis system that can quickly process the received signal. When the pressure value remains stable within a preset time, it indicates that there is no air leakage in the catheter; if the pressure value drops, it is determined that there is an air leakage in the catheter, and an alarm device connected to it will be triggered. An audible and visual alarm can be emitted using a commonly used buzzer (not shown). Both ends of the second sleeve 2 are open, with one end facilitating connection to the test tube a, and the other end connected to the air injection pipe 3, which is the channel for injecting detection gas into the test tube a. During use, the air injection pipe 3 can be connected to an adjustable flow air pump, which can set appropriate inflation flow and pressure according to different specifications of tubes to ensure the universality of detection. The connection section of the first sleeve 1 and the second sleeve 2 is equipped with an airbag sealing ring 6. The airbag sealing ring 6 is made of aging-resistant rubber material and has an annular air chamber inside. There are two airbag sealing rings 6 on the first sleeve 1 and the second sleeve 2. The air supply component is used to deliver gas to the airbag sealing ring 6 so that the airbag sealing ring 6 can be inflated to press the test tube a tightly and prevent air leakage at the connection. Both the first sleeve 1 and the second sleeve 2 are equipped with a support member 7. When connecting the test tube a, the support member 7 supports the end of the test tube a from the inside to prevent the end of the test tube a from curling towards the center and causing air leakage.

[0035] Among them, see Figure 3 As shown, the pressing member 8 includes a piston block 81, and an elastic pressure column 82 is connected to one end of the piston block 81 facing the pressure sensor 9. A second spring 83 is provided on the outside of the elastic pressure column 82.

[0036] See Figure 1 and Figure 2 As shown, the air supply component includes an air supply branch pipe 4, the two ends of which are respectively connected to the airbag sealing rings 6 on the first sleeve 1 and the second sleeve 2. An air supply main pipe 5 is connected to the air supply branch pipe 4. A valve can be installed on the air supply main pipe 5, and the air inlet end of the air supply main pipe 5 is used to connect to an air pump.

[0037] As described above, during use, firstly, the first sleeve 1 and the second sleeve 2 are installed at both ends of the test tube a. Then, gas is injected through the main gas supply pipe 5 and sent into the airbag sealing ring 6 through the gas supply branch pipe 4. The airbag sealing ring 6 presses the test tube a tightly. Subsequently, gas is introduced into the test tube a through the gas injection pipe 3. The injected gas compresses the piston block 81, causing the elastic pressure column 82 to compress the pressure sensor 9 until the pressure detected by the pressure sensor 9 reaches the preset value. At this point, the gas injection is stopped. When the pressure value remains stable within the preset time, it indicates that there is no air leakage in the tube. If the pressure value drops beyond the range, it is determined that there is an air leakage in the tube. The detection is convenient and quick.

[0038] See Figure 3 and Figure 4 As shown, the support member 7 includes:

[0039] The frustum 71 is connected to the piston block 81 via a connecting rod. The frustum 71 is axially hollow to facilitate the passage of gas.

[0040] Multiple V-shaped smooth plates 72 are arranged in a ring array around the frustum 71. The V-shaped smooth plates 72 are retractable. When the test tube a is installed, as the test tube a is inserted, the end of the test tube a is fitted over the frustum 71 and the V-shaped smooth plates 72. The V-shaped smooth plates 72 are designed to facilitate the fitting of the end of the test tube a.

[0041] Secondly, grooves 73 are arranged in a ring array on the outer wall of the frustum 71, and a connecting post 74 is connected to the V-shaped smooth plate 72. A first spring 75 is connected between the end of the connecting post 74 and the bottom of the groove 73.

[0042] As described above, when inserting and installing the test tube a, the frustum 71 and the V-shaped smooth plate 72 are located at the inner end of the test tube a, which can support the end of the test tube a, preventing the soft end of the test tube a from twisting and curling, thereby reducing the occurrence of air leakage. Once the end of the tube is twisted or curled, it will not only affect the accuracy of the installation, but may also cause wrinkles or gaps in the inner wall of the tube. These minor defects are very likely to become air leakage points in subsequent air pressure tests, seriously affecting the accuracy of the test results. In addition, the V-shaped smooth plate 72 is telescopically installed through the first spring 75, which makes it easy to support and limit the tubes of different diameters.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An infusion set catheter air leak detection structure, comprising: include: The first sleeve (1) and the second sleeve (2) are respectively installed at both ends of the tube to be tested. The first sleeve (1) is equipped with a pressure sensor (9) and a pressure-blocking component (8). The end of the second sleeve (2) is connected to an air injection tube (3). The pressure-blocking component (8) presses against the pressure sensor (9) after being pressed. The connecting section of the first sleeve (1) and the second sleeve (2) is provided with an airbag sealing ring (6). An air supply component is used to supply gas to the airbag sealing ring (6); Support (7) is provided in both the first sleeve (1) and the second sleeve (2). When connecting the test tube, the end of the test tube is supported from the inside by the support (7).

2. The infusion set catheter leakage detection structure according to claim 1, characterized in that: The pressure member (8) includes a piston block (81), and an elastic pressure column (82) is connected to one end of the piston block (81) facing the pressure sensor (9).

3. An infusion set catheter air leak detection structure as defined in claim 2, wherein: The elastic pressure column (82) is provided with a second spring (83) on its outside.

4. The air leak detection structure for an infusion set catheter according to claim 1, characterized by: The gas supply component includes: The air supply branch pipe (4) is connected at both ends to the airbag sealing ring (6) on the first sleeve (1) and the second sleeve (2), respectively. The main gas supply pipe (5) is connected to the branch gas supply pipe (4).

5. The air leak detection structure for an infusion set catheter according to claim 2, characterized by: The support member (7) includes: The frustum (71) is connected to the piston block (81) via a connecting rod. Multiple V-shaped smooth plates (72) are arranged in a ring array around the periphery of the frustum (71), and the V-shaped smooth plates (72) are retractable.

6. An infusion set catheter air leak detection structure as defined in claim 5, wherein: The outer wall of the frustum (71) is provided with grooves (73) arranged in a ring array. A connecting post (74) is connected to the V-shaped smooth plate (72). A first spring (75) is connected between the end of the connecting post (74) and the bottom of the groove (73).

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