Balloon eccentricity detection tool

Abstract

The utility model provides a balloon eccentricity detection tool. The balloon eccentricity detection tool comprises a base with the length direction X and the width direction Y and side walls perpendicularly connected to the two ends of the base in the length direction X, a fixing rod is arranged on one side wall, a connecting pipe is arranged on the other side wall, the fixing rod and the connecting pipe extend in the X direction, and the fixing rod is connected with the connecting pipe. A gap used for clamping a balloon is formed between the fixing rod and the connecting pipe, an angle measuring mechanism is arranged on the upper surface of the base, a datum point is arranged on the angle measuring mechanism, and the datum point is located in the gap on an XY projection plane; and a through channel is arranged in the connecting pipe. The detection tool provided by the utility model carries out detection in a mechanical mode, and greatly reduces the cost on the premise of meeting the detection requirements.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a balloon eccentricity detection tool. Background Technology

[0002] Currently, enteral nutrition catheters used clinically are inserted through the nasal cavity into the intestines to administer enteral nutrition. The catheter has a balloon attached. During inflation or use, the center of the balloon may deviate from the center of the catheter. If the deviance exceeds the normal range, uneven force during insertion may prevent the catheter from reaching its intended position smoothly, increasing user discomfort and the difficulty of operation for medical staff. Furthermore, an off-center balloon may generate uneven pressure on the intestinal wall, increasing the risk of intestinal mucosal damage, ulcers, and even perforation. Therefore, deviance testing is required before the balloon leaves the factory.

[0003] Existing testing methods, such as those using testing instruments, involve emitting light of a specific wavelength through internal optical imaging. This light is uniformly incident on the surface of the balloon, causing reflection and refraction. If the reflection and refraction of the light exhibit a uniform and symmetrical distribution pattern, the balloon center meets factory requirements. If there are differences in the reflection and refraction of the light, the balloon is off-center, and this difference is sensitively detected by high-resolution optical sensors. Such high-precision instrument testing is costly. Utility Model Content

[0004] The purpose of this invention is to provide a balloon eccentricity detection fixture that is low in cost and can meet the detection requirements.

[0005] The technical solution of this utility model is: a balloon eccentricity detection fixture, including a base having a length direction X and a width direction Y, and side walls perpendicularly connected to both ends of the base in the length direction X. A fixing rod is provided on one side wall, and a connecting tube is provided on the other side wall. The fixing rod and the connecting tube extend along the X direction, and a gap for clamping the balloon is formed between the fixing rod and the connecting tube. An angle measuring mechanism is provided on the upper surface of the base, and a reference point is provided on the angle measuring mechanism. The reference point is located in the gap on the XY projection plane. A through channel is provided in the connecting tube.

[0006] Preferably, the angle measuring mechanism includes an angle ruler and a pointer. One end of the pointer is rotatably mounted on the base with the reference point as the center, and the other end of the pointer is positioned close to the angle ruler, which is mounted on the base.

[0007] Preferably, the base is further provided with a width measuring mechanism, which extends along the Y direction and has a 0 degree. The extension of the 0 degree in the X direction coincides with the reference point.

[0008] Preferably, the width measuring mechanism is slidably mounted on the base along the X direction.

[0009] Preferably, the base has grooves at both ends in the Y direction; the width measuring mechanism includes a scale and sliders vertically connected to both ends of the scale, the sliders are slidably disposed in the grooves, the scale has graduation lines, and the graduation lines have the 0 degree.

[0010] Preferably, a sealing ring is provided at the end of the gap formed between the fixing rod and the connecting pipe, and the channel passes through the sealing ring on the connecting pipe.

[0011] Preferably, a differential pressure gauge is provided on the connecting pipe, and the differential pressure gauge is located on the outside of the side wall.

[0012] Preferably, a balloon is provided in the gap, one end of the balloon is connected to a fixed rod, the other end of the balloon is connected to a connecting tube, and the channel communicates with the balloon; the reference point coincides with the center point of the balloon on the XY projection plane, and the axis of the connecting tube coincides with the axis of the balloon.

[0013] Preferably, the base is further provided with a width measuring mechanism, which extends along the Y direction and has a 0-degree setting that coincides with the axis of the connecting pipe.

[0014] Compared with related technologies, the beneficial effects of this utility model are as follows:

[0015] I. The testing fixture of this utility model adopts a mechanical method for testing, which significantly reduces costs while meeting the testing requirements;

[0016] II. The testing fixture of this utility model has an angle measuring mechanism that can detect the offset angle of a certain point in the radial direction of the balloon relative to the axis after inflation, and a width measuring mechanism that can detect whether the width values ​​(X-direction values) of two points in the radial direction of the balloon relative to the axis after inflation are symmetrical, thereby realizing multi-parameter testing of the balloon and providing a more intuitive evaluation of the balloon's qualification. Attached Figure Description

[0017] Figure 1 A three-dimensional structural schematic diagram of the balloon eccentricity detection fixture provided by this utility model;

[0018] Figure 2 A three-dimensional structural diagram of the balloon eccentricity detection fixture provided by this utility model, with a balloon installed.

[0019] Figure 3 This is a schematic diagram of the detection process.

[0020] In the attached diagram: 1. Base; 101. Slide groove; 2. Side wall; 3. Fixing rod; 4. Balloon; 41. Tube opening; 5. Width measuring mechanism; 51. Slider; 52. Scale; 6. Angle measuring mechanism; 61. Reference point; 62. Angle ruler; 63. Pointer; 7. Differential pressure gauge; 8. Connecting pipe; 81. Channel; 9. Sealing ring; 11. Gap. Detailed Implementation

[0021] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0022] like Figure 1 As shown, the balloon eccentricity detection fixture provided in this embodiment includes a base 1, a side wall 2, a fixing rod 3, a balloon 4, a width measuring mechanism 5, an angle measuring mechanism 6, a differential pressure gauge 7, a connecting pipe 8, and a sealing ring 9.

[0023] The base 1 has a length direction X and a width direction Y, with its two ends in the X direction perpendicularly connected to the side wall 2. The base 1 can be integrally formed with the side wall 2. The two ends of the base 1 in the Y direction are provided with sliding grooves 101.

[0024] A hole is provided on the side wall 2. One end of the fixing rod 3 is installed in the hole on one of the side walls 2, and the other end of the fixing rod 3 extends horizontally, with a sealing ring 9 provided on the extended end of the fixing rod 3. The sealing ring 9 on the fixing rod 3 has a frustum conical structure.

[0025] The connecting pipe 8 passes through a hole in another side wall 2, and one end of the connecting pipe 8 is connected to an external air source (or water source) via a differential pressure gauge 7 and a one-way valve (not shown). The other end of the connecting pipe 8 extends horizontally, and a sealing ring 9 is provided at the extended end of the connecting pipe 8. The sealing ring 9 on the connecting pipe 8 has a rounded chamfer.

[0026] The sealing ring 9 on the fixing rod 3 and the sealing ring 9 on the connecting pipe 8 are arranged adjacently and form a gap 11. The connecting pipe 8 is provided with a channel 81, which passes through both ends of the connecting pipe 8.

[0027] like Figure 2 As shown, the balloon 4 is cylindrical with openings 41 at both ends. During installation, one opening 41 is inserted into the fixing rod 3, and the other opening 41 is inserted into the connecting tube 8. The channel 81 is connected to the balloon 4.

[0028] like Figure 1As shown, the width measuring mechanism 5 includes a scale 52 and sliders 51 vertically connected to both ends of the scale 52. The sliders 51 are slidably disposed in the groove 101. The scale 52 has graduation lines, and the center of the graduation lines is 0 degrees. Figure 3 As shown, the 0-degree mark on the scale, the axis of the balloon 4, and the axis of the connecting tube 8 coincide.

[0029] like Figure 1 As shown, the angle measuring mechanism 6 includes an angle ruler 62 and a pointer 63. One end of the pointer 63 is rotatably mounted on the base 1 with a reference point 61 as its center, and the other end of the pointer 63 is positioned close to the angle ruler 62, which is mounted on the base 1. The 0-degree angle on the angle ruler 62 coincides with the axis of the fixed rod 3. Figure 3 As shown, the reference point 61 coincides with the center of the balloon 4 (the intersection of the axial centerline and the radial centerline).

[0030] During testing, the gas (or water) source is activated, and the balloon 4 is filled with the rated volume of gas (or liquid) through the connecting pipe 8, inflating the balloon 4 to its working volume. The width measuring mechanism 5 slides along the axial direction (X-direction) of the balloon 4. After each sliding position, the distance from each of the two ends of the balloon 4 in the radial direction to 0 degrees is measured and compared. If the difference between these two distance values ​​is large, it indicates that the balloon 4 has a large eccentricity. If the compared distance value is greater than the set value, the balloon 4 is deemed unqualified.

[0031] Alternatively, measurements can be taken using the angle measuring mechanism 6. Multiple measuring points are set on the balloon 4. By rotating the pointer 63 until its center coincides with a measuring point, and then reading the scale indicated by the pointer 63, the angle value of the offset of that measuring point is obtained. If it exceeds the set range, the balloon 4 is deemed unqualified.

[0032] The height of the scale 52 above the upper surface of the base 1 is higher than the height of the pointer 63, so as to expand the range of movement of the scale 52.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A balloon eccentricity detection fixture, comprising a base (1) having a length direction X and a width direction Y, and sidewalls (2) perpendicularly connected to both ends of the base (1) in the length direction X, characterized in that, A fixing rod (3) is provided on one side wall (2), and a connecting tube (8) is provided on the other side wall (2). The fixing rod (3) and the connecting tube (8) extend along the X direction. A gap (11) for clamping the balloon is formed between the fixing rod (3) and the connecting tube (8). An angle measuring mechanism (6) is provided on the upper surface of the base (1). A reference point (61) is provided on the angle measuring mechanism (6). The reference point (61) is located in the gap (11) on the XY projection plane. A through channel (81) is provided in the connecting tube (8).

2. The balloon eccentricity detection fixture according to claim 1, characterized in that, The angle measuring mechanism (6) includes an angle ruler (62) and a pointer (63). One end of the pointer (63) is rotated around the reference point (61) and is mounted on the base (1). The other end of the pointer (63) is positioned close to the angle ruler (62), which is mounted on the base (1).

3. The balloon eccentricity detection fixture according to claim 1, characterized in that, The base (1) is also provided with a width measuring mechanism (5), which extends along the Y direction and has a 0 degree. The extension line of the 0 degree in the X direction coincides with the reference point (61).

4. The balloon eccentricity detection fixture according to claim 3, characterized in that, The width measuring mechanism (5) is slidably mounted on the base (1) along the X direction.

5. The balloon eccentricity detection fixture according to claim 4, characterized in that, The base (1) has grooves (101) at both ends in the Y direction; the width measuring mechanism (5) includes a scale (52) and a slider (51) vertically connected to both ends of the scale (52). The slider (51) is slidably disposed in the groove (101). The scale (52) has scale lines, and the scale lines have the 0 degree.

6. The balloon eccentricity detection fixture according to claim 1, characterized in that, The fixed rod (3) and the connecting pipe (8) are provided with sealing rings (9) at the ends of the gap (11) formed by the gap (11), and the channel (81) passes through the sealing rings (9) on the connecting pipe (8).

7. The balloon eccentricity detection fixture according to claim 1, characterized in that, The connecting pipe (8) is equipped with a differential pressure gauge (7), which is located outside the side wall (2).

8. The balloon eccentricity detection fixture according to claim 1, characterized in that, A balloon (4) is provided in the gap (11). One end of the balloon (4) is connected to the fixed rod (3), and the other end of the balloon (4) is connected to the connecting tube (8). The channel (81) is connected to the balloon (4). The reference point (61) coincides with the center point of the balloon (4) on the XY projection plane. The axis of the connecting tube (8) coincides with the axis of the balloon (4).

9. The balloon eccentricity detection fixture according to claim 8, characterized in that, The base (1) is also provided with a width measuring mechanism (5), which extends along the Y direction and has a 0 degree, which coincides with the axis of the connecting pipe (8).

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