Automatic venting infusion set

Abstract

The utility model discloses an automatic exhaust infusion apparatus, including the drop, the top end sealed of drop is provided with the sealing cover, be provided with the lifting mechanism on the sealing cover, the bottom of drop is provided with the fixed cylinder, the fixed cylinder in sealed sliding has the exhaust column, be provided with the filter membrane on the exhaust column, the exhaust column and filter membrane connection lifting mechanism the sealing cover and fixed cylinder all are provided with infusion pipe, be provided with the exhaust pipe on the sealing cover, realized the lifting of filter membrane and exhaust column, possessed better exhaust effect and the liquid effect of stopping.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the medical instrument technical field, more specifically relates to automatic exhaust infusion apparatus. BACKGROUND

[0002] At present, the common infusion apparatus with automatic exhaust function is provided with an exhaust column at the bottom of the drop chamber, the exhaust column is connected with the external infusion tube, an exhaust pipe is arranged at the top of the drop chamber, when the liquid medicine flows into the drop chamber from the infusion tube at the top of the drop chamber and then flows into the infusion tube at the bottom through the exhaust column, the air pressure in the infusion tube at the bottom becomes large, thus the air is discharged from the exhaust column, and the exhaust groove of the exhaust column is opened on the side surface and extends along the axial direction, thus the exhaust groove is not blocked by the liquid medicine in the exhaust stage, the above is the prior art, and other similar patents can also be referred to, for example, the existing patent with the patent name of automatic exhaust infusion apparatus and the publication number CN101385884A.

[0003] However, some infusion apparatuses increase the length of the exhaust column in the drop chamber in order to improve the exhaust effect, as described above, and some infusion apparatuses are provided with a filter membrane at the top end of the exhaust column in order to have the automatic liquid stopping function, and the filter membrane is generally arranged at the bottom of the drop chamber, so that the height of the exhaust column is also short, for example, the patent with the patent name of fine membrane liquid stopping double-exhaust multifunctional infusion apparatus and the publication number CN210844657U, however, the short exhaust column will reduce the exhaust effect to a certain extent, and if the filter membrane is arranged on the long exhaust column, the liquid stopping effect at the end of the infusion will be affected, and the liquid medicine residue will be increased.

[0004] Therefore, an infusion apparatus with good exhaust effect in the early stage of infusion and good liquid stopping effect at the end of infusion is required. UTILITY MODEL CONTENT

[0005] In view of the defects of the prior art, the utility model provides an automatic exhaust infusion apparatus capable of lifting the filter membrane and the exhaust column, which has good exhaust effect and liquid stopping effect.

[0006] To achieve the above object, the utility model provides the following technical scheme: an automatic exhaust infusion apparatus, comprising a drop chamber, a sealing cover is arranged at the top end of the drop chamber, a lifting mechanism is arranged on the sealing cover, a fixed cylinder is arranged at the bottom of the drop chamber, an exhaust column is sealingly and slidably arranged in the fixed cylinder, a filter membrane is arranged on the exhaust column, the exhaust column and the filter membrane are connected with the lifting mechanism, infusion tubes are arranged on the sealing cover and the fixed cylinder, and an exhaust pipe is arranged on the sealing cover. The lifting mechanism includes a fixed sleeve with external threads and a rotating sleeve with internal threads. The rotating sleeve is threadedly connected to the fixed sleeve. The fixed sleeve is fixed to the sealing cover. A lifting plate is provided on the rotating sleeve. The lifting plate is rotatably connected to the rotating sleeve. Several guide rods are provided on the lifting plate. The guide rods pass through the fixed sleeve and extend into the drip chamber. The guide rods are slidably connected to the fixed sleeve. A mesh plate is provided between the ends of the several guide rods that extend into the drip chamber. The filter membrane and the exhaust column are respectively connected to the upper and lower sides of the mesh plate. The outer edge of the mesh plate is slidably and sealingly connected to the inner wall of the drip chamber.

[0007] Furthermore, a plurality of balls are provided between the lifting plate and the rotating sleeve, and the plurality of balls are circumferentially distributed on the upper and lower sides of the lifting plate.

[0008] Furthermore, the lifting plate is provided with a through hole for the infusion tube to pass through.

[0009] Furthermore, the axial length of the rotating sleeve is greater than that of the fixed sleeve, a limiting plate is provided at the bottom of the rotating sleeve, the minor diameter of the external thread on the fixed sleeve is greater than the outer diameter of the sealing cover, and a number of limiting blocks are provided on the top surface of the fixed sleeve.

[0010] Furthermore, a sealing ring is provided on the outer edge of the mesh plate, and the sealing ring slides in a sealing manner with the inner wall of the dripping bucket.

[0011] Furthermore, a plurality of sealing rings are provided on the outer cylindrical surface of the exhaust column, and the sealing rings slide in a sealed manner with the fixed cylinder.

[0012] Furthermore, the exhaust pipe is equipped with a breathable and waterproof device.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: Before infusion, rotating the rotating sleeve drives the filter membrane and the venting column to rise, increasing the venting height of the venting column. When the medicine enters the drip chamber, it can effectively expel the air in the infusion tube connected to the bottom of the drip chamber, i.e., located on the fixed cylinder. After normal infusion, rotating the rotating sleeve in the opposite direction drives the filter membrane and the venting column to descend, so that the filter membrane maintains a lower stop position, effectively stopping the infusion at the end of the infusion and avoiding excessive residual medicine in the drip chamber. Thus, the infusion set has a better venting and stopping effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the automatic air-venting infusion device of this utility model.

[0015] Reference numerals: 1. Drip chamber; 2. Sealing cap; 3. Fixing cylinder; 4. Exhaust column; 5. Filter membrane; 6. Infusion tube; 7. Exhaust pipe; 8. Fixing sleeve; 9. Rotating sleeve; 10. Lifting plate; 11. Guide rod; 12. Mesh plate; 13. Ball bearing; 14. Through hole; 15. Limiting plate; 16. Limiting block; 17. Sealing ring; 18. Sealing ring; 19. Breathable and waterproof device. Detailed Implementation

[0016] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0017] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0018] Reference Figure 1 The present invention will be further described below.

[0019] An automatic venting infusion set includes a drip chamber 1, a sealing cap 2 sealing the top of the drip chamber 1, a lifting mechanism on the sealing cap 2, a fixed cylinder 3 at the bottom of the drip chamber 1, a venting column 4 slidingly sealed inside the fixed cylinder 3, a filter membrane 5 on the venting column 4, the venting column 4 and the filter membrane 5 connected to the lifting mechanism, an infusion tube 6 on both the sealing cap 2 and the fixed cylinder 3, and a venting pipe 7 on the sealing cap 2.

[0020] The lifting mechanism includes a fixed sleeve 8 with external threads and a rotating sleeve 9 with internal threads. The rotating sleeve 9 is threadedly connected to the fixed sleeve 8. The fixed sleeve 8 is fixed to the sealing cover 2. A lifting plate 10 is provided on the rotating sleeve 9. The lifting plate 10 is rotatably connected to the rotating sleeve 9. A plurality of guide rods 11 are provided on the lifting plate 10. The guide rods 11 pass through the fixed sleeve 8 and extend into the dripping bucket 1. The guide rods 11 are slidably connected to the fixed sleeve 8. A mesh plate 12 is provided between the ends of the plurality of guide rods 11 that extend into the dripping bucket 1. The filter membrane 5 and the exhaust column 4 are respectively connected to the upper and lower sides of the mesh plate 12. The outer edge of the mesh plate 12 is slidably and sealingly connected to the inner wall of the dripping bucket 1.

[0021] like Figure 1 As shown, before the infusion begins, i.e., before the medication flows into the drip chamber 1 from the infusion tube 6 at the top, the rotating sleeve 9 is rotated to raise the lifting plate 10. This, in turn, raises the filter membrane 5 and the venting column 4 via the guide rod 11 and the mesh plate 12, increasing the venting height of the venting column 4. When the medication enters the drip chamber 1, this effectively expels air from the infusion tube 6 connected to the bottom of the drip chamber 1, located on the fixed cylinder 3. Once the infusion begins, the rotating sleeve 9 is rotated in the opposite direction to lower the filter membrane 5 and the venting column 4, keeping the filter membrane 5 at a lower stop position. This effectively stops the infusion at the end and prevents excessive medication residue in the drip chamber 1. Therefore, the infusion set with the above structure provides good venting during the initial infusion phase and good stop-fluid retention at the end of the infusion.

[0022] Specifically, the lifting structure can be other structures, such as sliding lifting.

[0023] Specifically, the mesh plate 12 includes an outer ring, a circular piece in the middle of the outer ring, and connecting rods distributed circumferentially between the outer ring and the circular piece and connecting the outer ring and the circular piece. The edge of the filter membrane 5 can be fixed to the outer ring by welding, bonding or other sealing methods, and the exhaust column 4 can be fixed to the circular piece by welding, bonding or other methods.

[0024] like Figure 1 As shown in this example, preferably, a plurality of balls 13 are provided between the lifting plate 10 and the rotating sleeve 9, and the plurality of balls 13 are circumferentially distributed on the upper and lower sides of the lifting plate 10.

[0025] Specifically, an annular groove is provided on the inner wall of the rotating sleeve 9, allowing the side of the lifting plate 10 to extend into the annular groove. Several balls 13 are provided between the upper and lower inner walls of the annular groove and the upper and lower sides of the lifting plate 10. Ball grooves are provided on the upper and lower inner walls of the annular groove and the upper and lower sides of the lifting plate 10. The balls 13 are placed in the ball grooves to achieve relative rotation between the lifting plate 10 and the rotating sleeve 9. That is, when the rotating sleeve 9 rotates, the lifting plate 10 only moves up and down due to the sliding connection between the guide rod 11 and the fixed sleeve 8.

[0026] like Figure 1 As shown in this example, preferably, the lifting plate 10 is provided with a through hole 14 for the infusion tube 6 to pass through.

[0027] like Figure 1 As shown, in this example, preferably, the axial length of the rotating sleeve 9 is greater than that of the fixed sleeve 8, a limiting plate 15 is provided at the bottom of the rotating sleeve 9, the minor diameter of the external thread on the fixed sleeve 8 is greater than the outer diameter of the sealing cover 2, and a plurality of limiting blocks 16 are provided on the top surface of the fixed sleeve 8.

[0028] Specifically, when the exhaust column 4 and filter membrane 5 are at a low position, the contact between the limiting block 16 and the lifting plate 10 can prevent the rotating sleeve 9 from continuing to rotate and descend. When the exhaust column 4 and filter membrane 5 rise to a certain height, the limiting plate 15 on the rotating sleeve 9 will contact the bottom surface of the fixed sleeve 8 to prevent the rotating sleeve 9 from continuing to rotate and rise.

[0029] like Figure 1 As shown in this example, preferably, a sealing ring 17 is provided on the outer edge of the mesh plate 12, and the sealing ring 17 slides in a sealing manner with the inner wall of the dripping bucket 1.

[0030] Specifically, the drip chamber 1 can be made of hard, non-toxic plastic to ensure the sealing ring 17 and the inner wall of the drip chamber 1 to slide smoothly. At the same time, medical staff can hold the hard drip chamber 1 to rotate the rotating sleeve 9, which improves the rotation effect of the rotating sleeve 9 and also prevents the drip chamber 1 from deforming when held.

[0031] like Figure 1 As shown in this example, preferably, a plurality of sealing rings 18 are provided on the outer cylindrical surface of the exhaust column 4, and the sealing rings 18 slide in a sealed manner with the fixed cylinder 3.

[0032] Specifically, when the exhaust column 4 rises to its highest point, there will still be a section that slides in contact with the fixed cylinder 3, and a sealing ring 18 will still be present on this section to achieve a seal.

[0033] like Figure 1 As shown in this example, preferably, the exhaust pipe 7 is provided with a breathable and waterproof device 19, which can be a single layer or multiple layers of breathable and waterproof membrane, used to allow the air in the dripping bucket 1 to be discharged.

[0034] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An automatic air-venting infusion set, characterized in that: The device includes a drip chamber, the top of which is sealed with a sealing cap, the sealing cap having a lifting mechanism, the bottom of which is fixed with a cylinder, an exhaust column sliding inside the cylinder, a filter membrane on the exhaust column, and the exhaust column being connected to the filter membrane by the lifting mechanism. Both the sealing cap and the fixed withlet tubes are provided, and the sealing cap has an exhaust pipe. The lifting mechanism includes a fixed sleeve with external threads and a rotating sleeve with internal threads. The rotating sleeve is threadedly connected to the fixed sleeve. The fixed sleeve is fixed to the sealing cover. A lifting plate is provided on the rotating sleeve. The lifting plate is rotatably connected to the rotating sleeve. Several guide rods are provided on the lifting plate. The guide rods pass through the fixed sleeve and extend into the drip chamber. The guide rods are slidably connected to the fixed sleeve. A mesh plate is provided between the ends of the several guide rods that extend into the drip chamber. The filter membrane and the exhaust column are respectively connected to the upper and lower sides of the mesh plate. The outer edge of the mesh plate is slidably and sealingly connected to the inner wall of the drip chamber.

2. The automatic air-venting infusion set according to claim 1, characterized in that: A plurality of ball bearings are provided between the lifting plate and the rotating sleeve, and the plurality of ball bearings are circumferentially distributed on the upper and lower sides of the lifting plate.

3. The automatic air-venting infusion set according to claim 1, characterized in that: The lifting plate is provided with through holes for the infusion tube to pass through.

4. The automatic air-venting infusion set according to claim 1, characterized in that: The axial length of the rotating sleeve is greater than that of the fixed sleeve. A limit plate is provided at the bottom of the rotating sleeve. The minor diameter of the external thread on the fixed sleeve is greater than the outer diameter of the sealing cover. Several limit blocks are provided on the top surface of the fixed sleeve.

5. The automatic air-venting infusion set according to claim 1, characterized in that: A sealing ring is provided on the outer edge of the mesh plate, and the sealing ring slides in a sealing manner with the inner wall of the dripping bucket.

6. The automatic air-venting infusion set according to claim 1, characterized in that: Several sealing rings are provided on the outer cylindrical surface of the exhaust column, and the sealing rings slide in a sealed manner with the fixed cylinder.

7. The automatic air-venting infusion set according to claim 1, characterized in that: The exhaust pipe is equipped with a breathable and waterproof device.

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