Dropping chamber of blood path dialysis tube

Abstract

The utility model relates to the technical field of hemodialysis pipelines, and discloses a blood path dialysis tube dripping opening chamber which comprises a dripping opening chamber body, the dripping opening chamber body is integrally formed through the extrusion forming technology, and a cavity used for blood flowing is formed between the first end and the second end of the dripping opening chamber body. The first end and the second end are fixedly connected with an upper cover and a lower cover respectively, and the upper cover and the lower cover are both in interference fit with the drip chamber main body; a first containing groove is formed in the side, facing the drip opening chamber body, of the lower cover. A filter screen is pressed and fixed between the bottom wall of the first accommodating groove and the second end; the lower cover is additionally arranged, when the filter screen is installed, the filter screen can be placed in the cavity from the opening in the end, where the filter screen is installed, of the drip chamber body, then the filter screen is stably pressed and fixed in the cavity through the lower cover, the stability of the position of the filter screen is guaranteed, the problem that the filter screen is difficult to install is solved, the assembly efficiency and the assembly quality are improved, and the assembly cost is reduced. And the problems that the filter screen is damaged and the filter screen is not pressed in place in the assembling process are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of hemodialysis pipelines, in particular to a blood dialysis tube drip chamber. Background Art

[0002] The hemodialysis extracorporeal circuit connects blood vessels to the dialyzer. Blood is transported to the dialyzer through the circuit, purified within the dialyzer, and then returned to the blood vessels through the circuit. The extracorporeal circuit consists of two sets of tubing: an arterial line and a venous line. One end of each line is connected to the dialyzer, while the other end is connected to the human artery and vein. During extracorporeal dialysis, a drip chamber is often installed in the circuit to collect gases generated during dialysis.

[0003] In the existing technology, the drip chamber often includes three parts: an upper cover, a drip chamber body, and a filter. The filter is placed into the drip chamber body from one end opening and fixedly connected to the inner wall of the other end of the drip chamber body through a buckle. The upper cover is then fixed to the open end of the drip chamber body. However, in this solution, when installing the filter, the filter needs to be pressed from one end opening of the drip chamber body into the card slot at the other end. Its installation structure is relatively complex and the cost is high, which is not conducive to the promotion of automated assembly. The assembly effect is greatly affected by the assembler, and the assembly quality is unstable. In addition, the adaptability between different models of existing drip chamber bodies is low, and it is difficult to meet the growing demand for use. Utility Model Content

[0004] The technical problem to be solved by the present invention is how to improve the quality and efficiency of filter assembly. In order to solve the above technical problem, the present invention provides a blood dialysis tube drip chamber, comprising a drip chamber body, the drip chamber body being integrally formed by an extrusion molding process, and a cavity for blood flow being provided between the first end and the second end of the drip chamber body;

[0005] The first end and the second end are respectively fixedly connected with an upper cover and a lower cover, and the lower cover and the upper cover are interference fit with the drip chamber body; a first accommodating groove is provided on the side of the lower cover facing the drip chamber body; a filter is pressed and fixed between the bottom wall of the first accommodating groove and the second end.

[0006] Preferably, a partition is provided in the lower cover, and the partition separates a first chamber and a second chamber in the lower cover, the second chamber is provided on the side of the lower cover away from the second end, and the first chamber is connected to the cavity; a through hole coaxial with the filter is provided in the middle of the partition, and the through hole is used to connect the first chamber and the second chamber.

[0007] Preferably, the filter screen is in the shape of a circular truncated cone, and the smaller end of the filter screen is arranged in the cavity, and the larger end of the filter screen is fixed between the second end and the lower cover.

[0008] Preferably, the larger end of the filter screen is provided with a ring plate, and the ring plate is press-fitted and fixed between the bottom wall of the first accommodating groove and the second end.

[0009] Preferably, the upper cover is provided with a second accommodating groove on the side facing the drop port chamber body, and the second accommodating groove is provided with a step abutting against the first end.

[0010] Preferably, the upper cover is provided with a blood pipeline penetrating through; one end of the blood pipeline extends in a direction away from the drop port chamber body, and the other end of the blood pipeline is arranged in the second accommodating groove and is closed at the end and provided with an opening in the side wall.

[0011] Preferably, the upper cover is further provided with a plurality of medicine liquid inlets in communication with the cavity, and the side of the upper cover away from the drop port chamber body is provided with a medicine liquid pipeline in communication with the medicine liquid inlets, and the medicine liquid pipeline extends in a direction away from the drop port chamber body.

[0012] Preferably, the upper cover and the lower cover are both adhesively fixed to the outer wall of the drop port chamber body.

[0013] The blood path dialysis tube drop port chamber provided in the embodiment of the utility model has the following beneficial effects compared with the prior art:

[0014] In the utility model, the lower cover is additionally arranged, in the process of installing the filter screen, the filter screen can be placed into the cavity through the opening of one end of the filter screen in the drop port chamber body, and then the filter screen is stably press-fitted and fixed in the cavity through the lower cover, on the one hand, the position of the filter screen is ensured to be stable, on the other hand, the filter screen is installed in the drop port chamber body through buckles in the traditional scheme is solved, the assembly efficiency is improved, the assembly quality is improved, the problem of damage of the filter screen and the problem of the filter screen not being pressed in place possibly occurring in the assembly process are avoided; in addition, the drop port chamber body adopts an extrusion molding process, so that a material with soft texture can be used for production, the hardness of the drop port chamber body can be effectively reduced, the universality and the adaptation degree of the pipeline to the dialysis machine are improved, and the damage of the filter screen in the installation process can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the front view of the utility model;

[0016] Figure 2 is the top view of the utility model;

[0017] Figure 3 is the Figure 2Schematic diagram of the cross-sectional structure at AA in the middle;

[0018] Figure 4 This utility model Figure 2 Schematic diagram of the cross-sectional structure at BB in the middle.

[0019] In the figure: 1, drip chamber body; 11, first end; 12, second end; 13, cavity;

[0020] 2. Upper cover; 21. Second receiving tank; 22. Step; 23. Blood pipe; 231. Opening; 24. Liquid medicine pipe;

[0021] 3. Lower cover; 31. First accommodating groove; 32. Partition; 33. First chamber; 34. Second chamber; 35. Through hole;

[0022] 4. Filter screen; 41. Ring plate. DETAILED DESCRIPTION

[0023] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] like Figures 1 to 4 As shown, a preferred embodiment of the present invention provides a blood dialysis tube drip chamber, which includes a drip chamber body 1, which is integrally formed by an extrusion molding process, and a cavity 13 for blood flow is provided between the first end 11 and the second end 12 of the drip chamber body 1;

[0025] The first end 11 and the second end 12 are fixedly connected to the upper cover 2 and the lower cover 3 respectively, and the lower cover 3 and the upper cover 2 are interference fit with the drip chamber body 1; the lower cover 3 is provided with a first accommodating groove 31 on the side facing the drip chamber body 1; the filter screen 4 is pressed and fixed between the bottom wall of the first accommodating groove 31 and the second end 12.

[0026] Specifically, the traditional drop chamber body 1 is generally produced by injection molding. In order to facilitate demoulding, the injection molding raw material of the drop chamber cannot use a material that is too soft. Therefore, the texture of the produced drop chamber body 1 is also relatively hard, but the versatility and adaptability between different models of drop chambers are poor. In order to adapt to different dialysis machine models, it is necessary to manufacture a variety of specifications and models of drop chamber bodies 1, which makes the use and production of the drop chamber more inconvenient. In this embodiment, the drop chamber body 1 is produced by extrusion molding. During the production process, a softer material with a softer texture can be used for production, thereby increasing the tube body shape variable, thereby improving its adaptability to the dialysis machine. It can replace the drop chamber body 1 with a similar size of the card position, reduce the types of specifications of the drop chamber, and improve the versatility of the product.

[0027] In addition, in the traditional drip chamber structure, the filter screen 4 needs to be first put into the cavity 13 from the opening 231 at one end of the drip chamber body 1, and then pressed by the assembler to move the filter screen 4 in the cavity 13 to the other end of the drip chamber body 1 and be fixedly connected with the drip chamber body 1 through the buckle structure. However, in this structure, the assembling technology of the assembler is tested, and the assembling quality is very unstable. In the process of pressing the filter screen 4, if the force is too large, the filter screen 4 is easily damaged, and if the force is too small, the filter screen 4 cannot be assembled in place. In the present embodiment, the lower cover 3 is additionally arranged at one end of the drip chamber. At this time, the openings 231 at both ends of the drip chamber body 1 are larger, the filter screen 4 can be inserted into the drip chamber from the installed side, and then the lower cover 3 is buckled to the second end 12 of the drip chamber body 1 and fixed. The filter screen 4 is pressed and fixed in the cavity 13 by the lower cover 3, the position is more stable, and the installation process is more convenient and fast. The filter screen 4 cannot be damaged or not installed in place in the installation process, and the assembling quality and efficiency of the filter screen 4 are higher.

[0028] In some embodiments, the lower cover 3 is provided with a partition plate 32. The partition plate 32 divides the lower cover 3 into a first chamber 33 and a second chamber 34. The second chamber 34 is arranged on the side of the lower cover 3 away from the second end 12, and the first chamber 33 is in communication with the cavity 13. The middle part of the partition plate 32 is provided with a through hole 35 coaxial with the filter screen 4, and the through hole 35 is used for communicating the first chamber 33 and the second chamber 34.

[0029] Specifically, the inner wall of the first chamber 33 is an inclined structure. One end of the first chamber 33 is in communication with the cavity 13 through the filter screen 4. The blood and other liquids in the cavity 13 enter the first chamber 33 after passing through the filter screen 4, and are then guided to the through hole 35 by the inner wall of the first chamber 33. Subsequently, the liquids enter the second chamber 34 through the through hole 35 and are finally discharged. The first chamber 33 and the partition plate 32 are arranged to slow down the impact force of the downward flow of the liquids, so as to avoid the phenomenon that the cells in the blood are damaged and die due to the excessive impact force of the downward flow. The inner wall of the first chamber 33 is an inclined structure to guide the flow of the blood and avoid the excessive impact force of the direct falling of the blood. The inner wall of the first chamber 33 can smoothly guide the blood to enter the second chamber 34 through the through hole 35, and also ensures the normal flow of the blood and other liquids.

[0030] In some embodiments, the filter screen 4 is in a circular truncated cone structure, and the smaller end of the filter screen 4 is arranged in the cavity 13, and the larger end of the filter screen 4 is fixed between the second end 12 and the lower cover 3.

[0031] Further, the larger end of the filter screen 4 is provided with a ring plate 41, and the ring plate 41 is pressed and fixed between the bottom wall of the first accommodating groove 31 and the second end 12.

[0032] Specifically, in some specific embodiments, the ring plate 41 provided at the larger end of the filter screen 4 is fixed together with the inner bottom wall of the first accommodating groove 31 and the second end 12, so that the position of the filter screen 4 is fixed and cannot move along the axis, and the position is more stable. When installing the filter screen 4, first align the smaller end of the filter screen 4 with the second end 12 of the drop chamber body 1, then insert the smaller end of the filter screen 4 into the cavity 13 of the drop chamber, until the ring plate 41 abuts against the second end 12, then align the first accommodating groove 31 of the lower cover 3 with the second end 12, and move the lower cover 3 until the inner bottom wall of the first accommodating groove 31 abuts against the ring plate 41, thereby completing the assembly of the lower cover 3 and the drop chamber body 1. In the above installation process, the main structure of the filter screen 4 is not extruded by external force, and the filter screen 4 is not prone to damage. The ring plate 41 is fixed between the lower cover 3 and the drop chamber body 1, which avoids the problem that the filter screen 4 is not pressed in place, and the installation process of the filter screen 4 is more convenient and fast.

[0033] In addition, in some other embodiments, the second end 12 and the inner bottom wall of the first accommodating groove 31 can also be provided with a limiting column or a limiting arc-shaped protrusion or a limiting groove structure, which cooperates with the protrusion or the groove provided on the ring plate 41 to realize the positioning of the filter screen 4 in the circumferential direction, further avoiding the sliding and rotating of the filter screen 4. Furthermore, in some other embodiments, a sealing groove and a sealing ring structure can also be provided between the lower cover 3 and the ring plate 41, and between the ring plate 41 and the drop chamber body 1.

[0034] In some embodiments, the upper cover 2 is provided with a second accommodating groove 21 on the side facing the drop chamber body 1, and a step 22 is arranged in the second accommodating groove 21 and abuts against the first end 11.

[0035] Further, the upper cover 2 is provided with a blood pipeline 23; one end of the blood pipeline 23 extends away from the drop chamber body 1, and the other end of the blood pipeline 23 is arranged in the second accommodating groove 21, and the end is closed and the side wall is provided with an opening 231.

[0036] Specifically, the blood pipeline 23 is used to connect with a vein pipe or an artery pipe, and is used to guide the internal blood of the human body into the cavity 13. The end of the blood pipeline 23 close to the drop chamber body 1 is closed, and the side wall is provided with an opening 231, which is to reduce the impact force when the blood flows down, avoid the blood directly dropping on the filter screen 4 at the bottom of the drop chamber body 1, reduce the impact force of the blood, and avoid the problem of cell damage and death in the blood. In addition, in some embodiments, the length of the second accommodating groove 21 is relatively long, the end of the blood pipeline 23 is located in the second accommodating groove 21, and is located above the step 22; and in some other embodiments, the end of the blood pipeline 23 is located in the cavity 13 of the drop chamber body 1.

[0037] In some embodiments, the upper cover 2 is further provided with a plurality of medicine liquid inlets in communication with the cavity 13, and the upper cover 2 is provided with a medicine liquid pipeline 24 in communication with the medicine liquid inlets and extending away from the drip chamber body 1.

[0038] Specifically, when the drip chamber guides blood, sometimes some medicine needs to be introduced to assist treatment, so that the effect of blood extracorporeal dialysis is better. In the embodiment, the medicine liquid pipeline 24 can be connected with a hose for conveying medicine liquid, and the medicine liquid can be input into the cavity 13 of the drip chamber through the medicine liquid pipeline 24 arranged on the upper cover 2, so as to complete the operation of introducing medicine liquid, which is safer and more reliable, and the medicine liquid is not easy to leak.

[0039] In some embodiments, the upper cover 2 and the lower cover 3 are adhesively fixed to the outer wall of the drip chamber body 1. The upper cover 2 and the lower cover 3 are fixedly connected to the drip chamber body 1 by adhesive, so that the pressure applied on the ring plate 41 does not decrease with the increase of use time, and the position of the filter screen 4 is better stabilized.

[0040] In summary, the embodiment of the utility model provides a blood path dialysis tube drip chamber, which is provided with the lower cover 3, so that the filter screen 4 can be placed into the cavity 13 through the opening 231 of one end of the filter screen 4 in the drip chamber body 1 during installation of the filter screen 4, and then the filter screen 4 is stably pressed and fixed in the cavity 13 through the lower cover 3, so that the position of the filter screen 4 is stabilized, and the complicated and difficult installation of the filter screen 4 in the drip chamber body 1 in the traditional scheme is solved, the assembly efficiency is improved, the assembly quality is improved, the problem of damage of the filter screen 4 and the problem of failure of the filter screen 4 to be pressed in place during the assembly process are avoided.

[0041] The above only describes the preferred embodiments of the utility model, and it should be noted that, for ordinary skilled persons in the technical field, some improvements and replacements can be made without departing from the technical principles of the utility model, and these improvements and replacements should also be regarded as the protection range of the utility model.

Claims

1. A blood dialysis tube drip chamber, characterized in that: The device comprises a drip chamber body, wherein the drip chamber body is integrally formed by an extrusion molding process, and a cavity for blood flow is provided between the first end and the second end of the drip chamber body; The first end and the second end are respectively fixedly connected with an upper cover and a lower cover, and the lower cover and the upper cover are interference fit with the drip chamber body; a first accommodating groove is provided on the side of the lower cover facing the drip chamber body; a filter is pressed and fixed between the bottom wall of the first accommodating groove and the second end.

2. The blood dialysis tube drip chamber according to claim 1, characterized in that: A partition is provided in the lower cover, and the partition separates a first chamber and a second chamber in the lower cover. The second chamber is provided on the side of the lower cover away from the second end, and the first chamber is connected to the cavity; a through hole coaxial with the filter is provided in the middle of the partition, and the through hole is used to connect the first chamber and the second chamber.

3. The blood circuit dialysis tube drip chamber according to claim 1, characterized in that: The filter screen is in a truncated cone structure, and the smaller end of the filter screen is arranged in the cavity, and the larger end of the filter screen is fixed between the second end and the lower cover.

4. The blood circuit dialysis tube drip chamber according to claim 3, characterized in that: A ring plate is provided at the larger end of the filter screen, and the ring plate is pressed and fixed between the bottom wall of the first accommodating groove and the second end.

5. The blood circuit dialysis tube drip chamber according to claim 1, characterized in that: A second accommodating groove is provided on a side of the upper cover facing the drip chamber body, and a step abutting against the first end is provided in the second accommodating groove.

6. The blood circuit dialysis tube drip chamber according to claim 5, characterized in that: A blood conduit is provided through the upper cover; one end of the blood conduit extends in a direction away from the drip chamber body, and the other end of the blood conduit is provided in the second accommodating groove, with the end portion being closed and the side wall being provided with an opening.

7. The blood circuit dialysis tube drip chamber according to claim 1, characterized in that: The upper cover is also provided with a plurality of liquid medicine inlets communicating with the cavity, and a liquid medicine pipeline communicating with the liquid medicine inlet is provided on the side of the upper cover away from the drip chamber body, and the liquid medicine pipeline extends in a direction away from the drip chamber body.

8. The blood circuit dialysis tube drip chamber according to claim 1, characterized in that: The upper cover and the lower cover are both glued and fixed to the outer wall of the drip chamber body.

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