Artery pot device and blood purification device

Abstract

The utility model discloses an artery pot device and a blood purification device, and the artery pot device comprises a bottle body, the interior of the bottle body is hollow, a liquid inlet and a liquid outlet which are communicated with the interior of the bottle body are formed in the lower part of the bottle body, and a cylinder is arranged in the bottle body; the sleeve is rotationally arranged on the periphery of the cylinder along the vertical axis, the sleeve is in clearance fit with the cylinder, one end of the sleeve extends towards the bottom of the bottle body, and the other end of the sleeve extends towards the top of the bottle body; the stirring part comprises a plurality of blade sets, the blade sets are distributed in the axial direction of the sleeve, each blade set comprises a plurality of blades distributed in the circumferential direction of the sleeve, and the height of the first blade set corresponds to that of the liquid inlet, so that blood flowing in from the liquid inlet acts on the blades of the first blade set, and the first blade set is driven to rotate. The risk of blood coagulation in the arterial kettle can be reduced, replacement liquid injected for hemodiafiltration treatment can be fully mixed with blood, and the safety of blood purification treatment is improved.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to an arterial chamber device and a blood purification device. Background Technology

[0002] Blood purification is a treatment method that involves drawing blood from a patient's body into an extracorporeal circulation system to remove toxins and water before returning it to the patient's body. During blood purification treatment, the patient's blood is drawn out of the body by the blood pump of the blood purification device and enters the extracorporeal circulation system, passing sequentially through an arterial catheter, arterial chamber, filter, and venous tubing, before being returned to the patient's body.

[0003] When blood is injected into the arterial chamber from above, the blood flow near the chamber wall and above the chamber body is relatively stagnant, which can easily lead to the formation of fibrin rings at the upper end of the chamber body, causing coagulation. In addition, during pre-replacement hemodialysis filtration treatment, a large amount of replacement fluid needs to be injected from the upper end of the arterial chamber. Since the blood at the upper end of the arterial chamber is relatively stagnant, the injection of a large amount of replacement fluid causes blood cells to settle at the bottom, while plasma is distributed at the upper end of the arterial chamber, which is not conducive to the blood purification treatment. Utility Model Content

[0004] The purpose of this application is to provide an arterial chamber device and a blood purification device that reduces the risk of blood clotting in the arterial chamber and allows the replacement fluid injected during hemodialysis filtration treatment to mix thoroughly with the blood, thereby increasing the safety of blood purification treatment.

[0005] To achieve the above objectives, this application provides an arterial chamber pot device, comprising:

[0006] The bottle body is hollow inside, and the lower part of the bottle body has an inlet and an outlet that communicate with the interior. The bottle body has a column inside.

[0007] A sleeve is rotatably disposed on the outer periphery of the cylinder along a vertical axis. The sleeve is clearance-fitted with the cylinder. One end of the sleeve extends toward the bottom of the bottle and the other end extends toward the top of the bottle.

[0008] The agitator includes several sets of blades, which are distributed along the axial direction of the sleeve. Each set of blades includes multiple blades distributed along the circumference of the sleeve. The first set of blades corresponds to the height of the inlet so that the blood flowing in from the inlet acts on the blades of the first set of blades and drives the first set of blades to rotate.

[0009] Preferably, the bottom of the bottle is sealed with a bottom cap, the bottom end of the column is disposed on the bottom cap, the column is located between the upper surface of the bottom cap and the top of the bottle, and in the height inside the bottle between the upper surface of the bottom cap and the top of the bottle, the top of the column and the sleeve are higher than the height at two-thirds of the height inside the bottle, and the second blade group corresponds to the height at two-thirds of the height inside the bottle.

[0010] Preferably, the top of the column and the sleeve are lower than four-fifths of the height inside the bottle, and multiple sets of the blades are provided between the second blade set and the top of the sleeve.

[0011] Preferably, the blades are integrally formed with the sleeve, and the blade sizes in the blade group decrease sequentially in the axial direction from the bottom end to the top end of the sleeve.

[0012] Preferably, the blade has a spindle structure and a smooth rounded corner structure on its outer edge. In the blade group from the bottom end to the top end of the sleeve, the length, width, and rounded corner radius of the outer edge of the blade decrease sequentially.

[0013] Preferably, the top of the column is provided with a slot, and a silicone plug is provided in the slot. The silicone plug is used to restrict the sleeve from coming out of the column in the axial direction.

[0014] Preferably, the lower part of the bottle body is also provided with a replacement fluid inlet, the replacement fluid inlet is integrally formed with the bottle body, the replacement fluid inlet is connected to the replacement fluid through a fourth conduit, and a second opening and closing device for controlling its opening and closing is provided on the fourth conduit.

[0015] Preferably, the inlet and the outlet are integrally formed with the bottle body, and the inlet and the outlet are respectively connected to the extracorporeal circulating blood and the filter through a first conduit and a second conduit.

[0016] Preferably, the top of the bottle is provided with an opening, and a pressure detection device is connected to the opening through a third conduit. The third conduit is provided with a first opening and closing device to control its opening and closing.

[0017] A blood purification device includes the arterial chamber device described above.

[0018] Compared to the aforementioned background technology, this application, by incorporating a stirring element that rotates with the blood flow inside the bottle, keeps the blood in the bottle in a dynamic rather than relatively static state. Specifically, the bottle contains a column serving as a support structure, with a sleeve rotatably positioned around the outer periphery of the column. The sleeve has multiple sets of blades, one of which corresponds at the height of the inlet. This allows the blood flowing in from the inlet to act on the blades of the blade set, thereby driving the blade set to rotate. The rotating blade set enhances the flow of blood in the bottle, reducing clotting caused by the relative stillness of the blood at the upper end of the bottle. Furthermore, this dynamic blood flow allows the replacement fluid to fully mix with the blood in the bottle during pre-replacement hemodialysis filtration treatment, preventing the occurrence of blood cell sedimentation at the lower end of the arterial chamber and plasma distribution at the upper end of the arterial chamber due to the injection of a large amount of replacement fluid, thus avoiding the formation of blood stratification within the bottle. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application 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 embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the arterial chamber device provided in the embodiments of this application;

[0021] Figure 2 This is a cross-sectional view of the arterial chamber device provided in the embodiments of this application;

[0022] Figure 3 This is a schematic diagram of the bottom cover and column structure provided in an embodiment of this application;

[0023] Figure 4 This is a schematic diagram of the stirring component structure provided in an embodiment of this application;

[0024] Figure 5 This is a schematic diagram of the displacement fluid inlet structure provided in an embodiment of this application;

[0025] Figure 6 This is a cross-sectional view of the displacement fluid inlet provided in an embodiment of this application.

[0026] In the diagram: 1-Bottle body; 2-Inlet; 3-Outlet; 4-Opening; 7-Column; 8-Sheath; 9-Bottom cap; 10-First blade group; 11-Second blade group; 12-Third blade group; 13-Fourth blade group; 14-Fifth blade group; 15-Silicone stopper; 16-Slot; 17-Replacement fluid inlet;

[0027] 51-First catheter; 52-Second catheter; 53-Third catheter; 54-Fourth catheter;

[0028] 61-First opening and closing device; 62-Second opening and closing device. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] It should be noted that in this embodiment, the orientation or positional relationship indicated by terms such as "upper," "lower," "front," and "rear" is based on the orientation or positional relationship shown in the accompanying drawings. It is used only for the convenience of describing this application and for simplifying the description, and does 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. Therefore, it should not be construed as a limitation of this application. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] like Figure 1 and Figure 2 As shown, in this embodiment, an arterial cupping device is provided. The device includes a bottle body 1, a sleeve 8, and a stirring component. The bottle body 1 is hollow inside, and an inlet 2 and an outlet 3 communicating with the interior are opened at the lower part of the bottle body 1. Blood from the human body enters the bottle body 1 through the inlet 2 under the traction of a blood pump. The inlet 2 and the outlet 3 are respectively distributed on both sides of the bottle body 1, with corresponding heights and consistent apertures.

[0033] Inside the bottle body 1, there is a column 7. The sleeve 8 is rotatably fitted around the outer circumference of the column 7 along the vertical axis, and the sleeve 8 and the column 7 are fitted with a clearance to ensure that the sleeve 8 has a smooth rotation effect; that is, the sleeve 8 is a hollow structure with an inner diameter larger than the outer diameter of the column 7, thereby ensuring that the sleeve 8 can rotate on the column 7.

[0034] It should be noted that the sleeve 8 and the column 7 are coaxially arranged, and both of their axes are vertical axes. One end of the sleeve 8 extends toward the bottom of the bottle 1, and the other end of the sleeve 8 extends toward the top of the bottle 1. The top of the column 7 and the sleeve 8 are at a certain distance from the upper part of the bottle 1.

[0035] The agitator includes several blade groups, which are distributed along the axial direction of the sleeve 8. Each blade group includes multiple blades distributed along the circumference of the sleeve 8. When the sleeve 8 rotates, each blade group on the corresponding sleeve 8 can rotate, thereby agitating the blood at different liquid levels in the bottle 1, so that the blood in the bottle is in a dynamic rather than relatively stagnant state.

[0036] Furthermore, among the multiple blade groups, at least one blade group corresponds to the height of the inlet 2, so that the blood flowing in from the inlet 2 directly acts on the blades of the first blade group 10, causing the first blade group 10 to rotate around the column 7 under the action of blood flow at a flow rate of 200~400mL / min. The rotation of the first blade group 10 and the sleeve 8 makes the blood below the bottle 1 in a state of enhanced flow; at the same time, the rotation of the sleeve 8 can also drive the rotation of other blade groups, thereby stirring the blood at different liquid levels.

[0037] This application incorporates a stirring element inside the bottle 1 that rotates with the blood flow, ensuring the blood inside is in a dynamic rather than relatively static state. Specifically, the bottle 1 contains a column 7 serving as a support structure, with a sleeve 8 rotatably positioned around the outer periphery of the column 7. The sleeve 8 has multiple sets of blades, one set of which is aligned with the inlet 2. This causes the blood flowing in from the inlet 2 to act on the blades of the blade set, thereby driving the blade set to rotate. The rotating blade set enhances the flow of blood within the bottle 1, reducing clotting caused by the relative stillness of the blood at the upper end of the bottle 1. Furthermore, this dynamic blood flow allows the replacement fluid to mix thoroughly with the blood in the bottle 1 during pre-replacement hemodialysis filtration treatment, preventing the accumulation of blood cells at the lower end of the arterial chamber and the distribution of plasma at the upper end of the arterial chamber due to the injection of a large amount of replacement fluid, thus avoiding the formation of blood stratification within the bottle 1.

[0038] In some embodiments, a bottom cap 9 is sealed at the bottom of the bottle body 1. Please refer to [reference needed]. Figure 2 The bottom cap 9 can be connected to the bottle body 1 by adhesive to prevent blood from leaking from the connection point; the bottom end of the column 7 is set on the upper surface of the bottom cap 9, and the column 7 is located between the upper surface of the bottom cap 9 and the top of the bottle body 1. In the height inside the bottle between the upper surface of the bottom cap 9 and the top of the bottle body 1, the top of the column 7 and the sleeve 8 are higher than two-thirds of the height inside the bottle, and the second blade group 11 is set at the height of two-thirds of the height inside the bottle.

[0039] Specifically, the Standard Operating Procedure (SOP) for blood purification recommends that during treatment, the blood level in the vial should ideally be at a height of two-thirds of the way up the vial body 1. When the blood level is below two-thirds of the way up the vial body 1, the rotation of the first blade assembly 10 can enhance the motion of the blood surface below this height, creating micro-vortices above the surface. This design of the first blade assembly 10 reduces clotting caused by the relative stillness of the blood on the upper surface of the vial. When the blood level is above two-thirds of the way up the vial body 1, the second blade assembly 11 can create micro-vortices in the upper part of the vial. This enhanced hydrodynamics of the blood in the upper part of the vial reduces clotting caused by relative blood stagnation.

[0040] Furthermore, the tops of the column 7 and the sleeve 8 are lower than four-fifths of the height inside the bottle, and multiple sets of blades are provided between the second blade group 11 and the top of the sleeve 8. Please refer to [reference needed]. Figure 4 For example, a third blade group 12, a fourth blade group 13, and a fifth blade group 14 are provided between the second blade group 11 and the top of the sleeve 8. The force of the rotation of the first blade group 10 is transmitted to the top of the sleeve 8. The rotation of the sleeve 8 drives the second blade group 11, the third blade group 12, the fourth blade group 13, and the fifth blade group 14 to rotate. When the liquid level in the bottle is above two-thirds of the height of the bottle body 1, the rotation of the second blade group 11, the third blade group 12, the fourth blade group 13, and the fifth blade group 14 can make the blood in the upper part of the bottle in a micro-vortex state. This rotation can stir the blood in the bottle between two-thirds and four-fifths of the height, reducing the coagulation caused by the relative stagnation of blood.

[0041] The blades and sleeve 8 are an integral structure. Along the axial direction from the bottom to the top of the sleeve 8, the blade sizes in the blade groups decrease sequentially; that is, the blades in the first blade group 10 are the largest, and the blade sizes in the second blade group 11 to the fifth blade group 14 decrease sequentially. The first blade group 10 is designed to be relatively large, and the force of blood flow is mainly concentrated in the first blade group 10, occupying a certain volume in the bottom space of the bottle 1. Under the action of blood flow, it is sufficient to move the blood inside the bottle, thereby driving the sleeve 8 to rotate, causing the force to rise to the upper side, and gradually weakening upwards. The blades in the second blade group 11 to the fifth blade group 14 are designed to decrease in size sequentially. Because the blood above the corresponding blades gradually decreases, the force driving the blood to rotate in a micro-vortex state also decreases accordingly. This design saves costs, while reducing its driving effect on the blood, avoiding damage to the blood; adding multiple sets of blades ensures that the movement of the blood above can be fully driven.

[0042] In some embodiments, the working surface of the blade is parallel to the rotation axis of the sleeve 8, and the blood in the inlet 2 enters the bottle in a horizontal direction. Therefore, the force generated by the horizontal movement of the blood is more likely to act on the vertical plane, and the blade has a better utilization rate of the force and a better rotation effect.

[0043] Furthermore, the blade has a spindle-shaped structure with a smooth, rounded outer edge. This rounding of the outer edge creates a smooth surface that prevents the blade from damaging blood cells. The blades in the first blade group 10 have a length and width of 5 mm and 4 mm, respectively, and a rounded outer edge radius of 0.5 mm. In the blade group from the bottom to the top of the sleeve 8, the length, width, and rounded outer edge radius of the blades decrease sequentially.

[0044] Specifically, the blades in the second blade group 11 are spindle-shaped structures with a length and width of 4mm and 3mm respectively, and the radius of the outer corner of the blade is 0.4mm; the blades in the third blade group 12 are spindle-shaped structures with a length and width of 3mm and 2mm respectively, and the radius of the outer corner of the blade is 0.3mm; the blades in the fourth blade group 13 are spindle-shaped structures with a length and width of 2mm and 1mm respectively, and the radius of the outer corner of the blade is 0.2mm; the blades in the fifth blade group 14 are spindle-shaped structures with a length and width of 1mm and 1mm respectively, and the radius of the outer corner of the blade is 0.1mm. It should be noted that the above parameters are values ​​under specific conditions, and different values ​​can be selected according to actual circumstances. These will not be detailed here, but all fall within the scope of protection of this application.

[0045] In some embodiments, the second blade group 11 to the fifth blade group 14 can be distributed at equal intervals, which can agitate the blood movement at equal intervals to ensure the blood flow effect.

[0046] Please refer to Figure 3 The column 7 and the bottom cover 9 are integrally formed. A slot 16 is provided on the top of the column 7. A silicone plug 15 is provided in the slot 16. The silicone plug 15 is made of medical silicone. The silicone plug 15 is used to prevent the sleeve 8 from falling out of the column 7 in the axial direction, and to ensure that the first blade group 10 on the sleeve 8 does not deviate too much from the inlet and outlet height, which is sufficient to drive blood movement.

[0047] Please refer to Figure 5 and Figure 6 The lower part of the bottle body 1 is also provided with a replacement fluid inlet 17, which is integrally formed with the bottle body 1. The replacement fluid inlet 17 is connected to the replacement fluid through the fourth catheter 54, and a second opening and closing device 62 is provided on the fourth catheter 54 to control its opening and closing. When performing pre-replacement hemodialysis filtration treatment, the replacement fluid needs to be injected into the bottle body 1. The replacement fluid and the blood in the bottle body 1 are fully mixed under the action of the blade group, which reduces the phenomenon of blood stratification in the arterial chamber caused by the injection of replacement fluid.

[0048] The inlet 2 and outlet 3 are integrally formed with the bottle body 1. The inlet 2 and outlet 3 are connected to the extracorporeal blood and the filter through the first catheter 51 and the second catheter 52, respectively. The blood in the bottle body 1 enters the filter through the second catheter 52, and the blood purified by the filter is returned to the patient's body.

[0049] Bottle 1 has an opening 4 at the top, please refer to... Figure 1 The opening 4 is connected to a pressure detection device via the third conduit 53. The pressure state inside the bottle 1 is transmitted to the pressure monitoring device via the third conduit 53, thereby controlling the pressure inside the bottle to be kept in an appropriate position. The third conduit 53 is equipped with a first opening and closing device 61 to control its opening and closing.

[0050] The aforementioned catheters can be flexible tubes made of medical polymer materials. The catheters are sealed to the corresponding interfaces with adhesives such as cyclohexanone or epoxy resin to ensure sealing strength. The aforementioned opening and closing devices can be medical flexible tube valves or medical flexible tube clamp valves, etc., without further restrictions.

[0051] This application also provides a blood purification device, which includes the aforementioned arterial chamber device.

[0052] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0053] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. An arterial chamber device, characterized in that, include: Bottle body (1), the bottle body (1) is hollow inside, the lower part of the bottle body (1) is provided with an inlet (2) and an outlet (3) communicating with the inside, and a column (7) is provided inside the bottle body (1). A sleeve (8) is rotatably disposed on the outer periphery of the column (7) along the vertical axis. The sleeve (8) is clearance-fitted with the column (7). One end of the sleeve (8) extends toward the bottom of the bottle (1), and the other end of the sleeve (8) extends toward the top of the bottle (1). The agitator includes several sets of blades, with multiple sets of blades distributed axially along the sleeve (8), and each set of blades includes multiple blades distributed circumferentially along the sleeve (8). The first set of blades (10) is height-corresponding to the inlet (2) so that the blood flowing in from the inlet (2) acts on the blades of the first set of blades (10) and drives the first set of blades (10) to rotate.

2. The arterial chamber device according to claim 1, characterized in that, The bottom of the bottle body (1) is sealed with a bottom cover (9). The bottom end of the column (7) is located on the bottom cover (9). The column (7) is located between the upper surface of the bottom cover (9) and the top of the bottle body (1). In the height of the bottle between the upper surface of the bottom cover (9) and the top of the bottle body (1), the top of the column (7) and the sleeve (8) are higher than the height at two-thirds of the height of the bottle. The second blade group (11) corresponds to the height at two-thirds of the height of the bottle.

3. The arterial chamber device according to claim 2, characterized in that, The top of the column (7) and the sleeve (8) are lower than the height of four-fifths of the height inside the bottle, and multiple sets of the blade groups are provided between the second blade group (11) and the top of the sleeve (8).

4. The arterial chamber device according to claim 1, characterized in that, The blades are integrally formed with the sleeve (8), and the blade size in the blade group decreases sequentially in the axial direction from the bottom end to the top end of the sleeve (8).

5. The arterial chamber device according to claim 4, characterized in that, The blade has a spindle structure and a smooth rounded corner structure on its outer edge. In the blade group from the bottom end of the sleeve (8) to the top end of the sleeve (8), the length, width and rounded corner radius of the outer edge of the blade decrease in sequence.

6. The arterial chamber pot device according to any one of claims 1-5, characterized in that, The top of the column (7) is provided with a slot (16), and a silicone plug (15) is provided in the slot (16). The silicone plug (15) is used to restrict the sleeve (8) from coming out of the column (7) in the axial direction.

7. The arterial chamber device according to claim 1, characterized in that, The lower part of the bottle body (1) is also provided with a replacement fluid inlet (17), the replacement fluid inlet (17) is integrally formed with the bottle body (1), the replacement fluid inlet (17) is connected to the replacement fluid through the fourth conduit (54), and a second opening and closing device (62) for controlling its opening and closing is provided on the fourth conduit (54).

8. The arterial chamber device according to claim 1, characterized in that, The inlet (2) and outlet (3) are integrally formed with the bottle body (1). The inlet (2) and outlet (3) are respectively connected to the extracorporeal circulating blood and filter through the first conduit (51) and the second conduit (52).

9. The arterial chamber device according to claim 1, characterized in that, The bottle body (1) has an opening (4) at the top. The opening (4) is connected to a pressure detection device via a third conduit (53). The third conduit (53) is equipped with a first opening and closing device (61) to control its opening and closing.

10. A blood purification device, characterized in that, Includes the arterial chamber device as described in any one of claims 1-9.

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