A blood perfusion device pre-charging exhaust device

Abstract

This invention relates to the field of medical device technology, specifically to a pre-filling and venting device for a hemoperfusion apparatus. The device includes a mounting base with a horizontally arranged annular slide rail mounted on its upper end; a clamping mechanism mounted above the annular slide rail for clamping and fixing the perfusion apparatus at the center of the annular slide rail; and a venting mechanism including a slide block, a driving assembly, and a striking assembly. The slide block is slidably mounted on the annular slide rail, and both the driving assembly and the striking assembly are mounted on the slide block. The driving assembly drives the slide block to slide along the annular slide rail and simultaneously drives the striking assembly to strike the bottom of the perfusion apparatus to vent air. The driving assembly drives the slide block to move in a circular motion along the annular slide rail, while simultaneously driving the striking assembly to continuously strike the bottom of the perfusion apparatus, causing air bubbles at the bottom to move to the top and be expelled. Furthermore, the striking head can strike the sidewall of the perfusion apparatus, loosening air bubbles in the gaps between the adsorbents through sidewall vibration, further accelerating air bubble expulsion, saving manpower, and improving work efficiency.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a pre-filling and venting device for a blood perfusion device. Background Technology

[0002] Hemoperfusion is an important blood purification technology. It involves introducing a patient's blood into a perfusion device containing a solid adsorbent. The adsorbent removes endogenous or exogenous toxins, metabolic waste, drugs, etc. from the blood, thereby purifying the blood and treating diseases.

[0003] Before performing hemoperfusion therapy, it is essential to pre-charge and purge the perfusion device. This is because a newly opened perfusion device contains a large amount of air. If this air is not completely expelled, it may enter the patient's bloodstream during hemoperfusion, causing serious complications such as air embolism and endangering the patient's life. It also increases the risk of coagulation; air bubbles can damage the integrity of red blood cells and platelets, activate intrinsic coagulation pathways, and cause turbulence within the tubing to damage the biocompatible coating, easily forming thrombi that block the tubing and potentially leading to embolism. Most importantly, it reduces the effectiveness of treatment and equipment operation. Air occupies the pores of the perfusion device's adsorbent, weakening its toxin adsorption capacity; air bubbles interfere with the accuracy of flow monitoring and may even damage the centrifugal pump impeller, leading to instability or interruption of extracorporeal circulation. Therefore, pre-charging and purging is a crucial preparatory step before hemoperfusion therapy, directly affecting the safety and effectiveness of the treatment.

[0004] Currently, the most common clinical method for pre-filling and venting blood perfusion devices is manual operation. Medical staff first connect the saline solution in series with the infusion set, extracorporeal circulation tubing, and perfusion device, then turn on the infusion set to allow the saline solution to slowly flow into the perfusion device. During the saline solution flow, the medical staff needs to gently tap the outer shell of the perfusion device to cause internal air bubbles to rise and be expelled. However, the above operation method requires manual tapping of the perfusion device for a long time, which is quite tiring and requires a medical staff member to handle this simple action, which is quite labor-intensive. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention proposes a pre-filling and venting device for a blood perfusion device to solve the technical problems mentioned in the background art.

[0006] The technical solution adopted in this invention is a pre-filling and venting device for a blood perfusion apparatus, comprising: Mounting base, the upper end of which is equipped with a horizontally arranged annular slide rail; A clamping mechanism is installed above the annular slide rail to clamp and fix the irrigation device at the center of the annular slide rail. The exhaust mechanism includes a slide block, a drive assembly, and a striking assembly. The slide block is slidably mounted on the annular slide rail. The drive assembly and the striking assembly are both located on the slide block. The drive assembly is used to drive the slide block to slide along the annular slide rail and to drive the striking assembly to strike the bottom of the irrigator to exhaust air.

[0007] In a preferred embodiment, the annular slide rail is hinged to the mounting base via two hinge seats arranged symmetrically at the front and rear, and the annular slide rail can be rotated left and right along the two hinge seats.

[0008] In a preferred embodiment, the hinge seat and the mounting base are elastically hinged; When the slide block is located to the left or right of the annular slide rail, the annular slide rail flips and tilts to the left or right.

[0009] In a preferred embodiment, a gear ring is fixedly installed on the inner side of the annular slide rail, and the drive assembly includes a drive motor installed on the lower side of the slide block. The output shaft of the drive motor extends into the slide block and is connected to a gear, which meshes with the gear ring.

[0010] In a preferred embodiment, the striking assembly includes a housing mounted on the upper side of the slide. An incomplete tooth is rotatably mounted on the inner sidewall of the housing and is connected to the gear transmission. A connecting rod is rotatably mounted on the outer sidewall of the housing via a rotating shaft. A striking head located below the irrigation device is mounted at the end of the connecting rod. The striking head is used to strike the bottom of the irrigation device. The rotating shaft extends into the housing and is connected to a fan-shaped tooth that matches the incomplete tooth. A first spring is provided between both sides of the fan-shaped tooth and the inner sidewall of the housing.

[0011] In a preferred embodiment, the clamping mechanism includes a mounting plate mounted above the annular slide rail, the mounting plate being provided with clamps.

[0012] In a preferred embodiment, the connecting rod is fixed with a sleeve sleeved on the outside of the rotating shaft, and the sleeve and the rotating shaft are fixedly connected by bolts.

[0013] In a preferred embodiment, an electrically controlled telescopic rod is provided between the mounting plate and the hinge seat to drive the irrigation device to move up and down, so that the striking component can strike the side wall of the irrigation device.

[0014] In a preferred embodiment, one end of the striking head is hemispherical for striking the bottom of the irrigation device, and the other end is arc-shaped for striking the side wall of the irrigation device.

[0015] As can be seen from the above technical solution, the beneficial technical effects of the present invention are as follows: 1. This invention uses a drive component to drive the slide block to move in a circular motion along a ring slide rail, while simultaneously driving the tapping component to continuously tap the bottom of the perfusion device, causing the bottom air bubbles to move to the top and be discharged. In addition, the tapping head can tap the side wall of the perfusion device, and the vibration of the side wall can loosen the air bubbles in the gaps of the adsorbent, further accelerating the discharge of air bubbles, saving manpower and improving work efficiency.

[0016] 2. The annular slide rail of the present invention can be rotated left and right along the hinge seat, so that the flow meter can be struck in an inclined state, changing the rising path of the bubbles, and making the vibration generated by the striking more effective on the bubble accumulation area, accelerating the detachment and discharge of bubbles.

[0017] 3. The hinge base and the mounting base of this invention are elastically hinged. When the slide block slides to the left or right side of the annular slide rail, the weight of the slide block as a whole drives the annular slide rail to automatically tilt to the left or right, realizing automatic left and right reciprocating tilting without manual operation. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0019] Figure 1 This is a schematic diagram of the structure of a pre-filling and venting device for a blood perfusion apparatus according to the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of a pre-filling and venting device for a blood perfusion apparatus according to the present invention. Figure 2 ; Figure 3 This is a cross-sectional schematic diagram of the annular slide rail and exhaust mechanism of the present invention; Figure 4 for Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0020] Figure 5 This is a schematic diagram of the structure of the striking component of the present invention striking the side wall of the irrigation device; Figure 6 This is a schematic diagram of the internal structure of the fixing block of the present invention.

[0021] Figure label: Mounting base 1, elastic clamp 101, annular slide rail 11, hinge seat 12, gear ring 13, slide 2, drive motor 21, gear 22, housing 3, incomplete gear 31, connecting rod 32, striking head 321, sleeve 322, sector tooth 33, first spring 34, mounting plate 4, clamp 41, electrically controlled telescopic rod 42; Fixed block 121, hinge shaft 122, arc groove 123, movable block 124, spring 125. Detailed Implementation

[0022] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0023] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0024] Example: like Figure 1-6 As shown, this embodiment provides a pre-filling and venting device for a blood perfusion apparatus, comprising: Mounting base 1, with a horizontally set annular slide rail 11 mounted on the upper end of mounting base 1; An elastic clip 101 is installed on the rear side of the mounting base 1. The elastic clip 101 is used to fix the mounting base 1 on the dialyzer. The elastic clip 101 is a conventional technical means in the prior art, so it will not be described in detail.

[0025] A clamping mechanism is installed above the annular slide rail 11 to clamp and fix the irrigation device at the center of the annular slide rail 11. The exhaust mechanism includes a slide block 2, a drive assembly, and a striking assembly. The slide block 2 is slidably mounted on an annular slide rail 11. Both the drive assembly and the striking assembly are located on the slide block 2. The drive assembly is used to drive the slide block 2 to slide along the annular slide rail 11 and to drive the striking assembly to strike the bottom of the irrigator to exhaust air.

[0026] The clamping mechanism clamps and fixes the perfusion device at the center of the annular slide rail 11 and above the striking component. The saline solution is connected to the upper and lower ports of the perfusion device through the infusion set's tubing. The infusion set switch is turned on to allow the saline solution to flow into the perfusion device. At the same time, the perfusion device shell is struck to promote the expulsion of air bubbles. That is, the drive component drives the slide block 2 to move in a circle along the annular slide rail 11, while driving the tapping component to tap the bottom of the irrigation device, causing the air bubbles at the bottom to move to the top and expel the air bubbles from the irrigation device. The annular slide rail 11 has annular grooves on both the upper and lower sides, and the slide block 2 is equipped with a slider that slides in the annular grooves to enable the slide block 2 to slide along the annular slide rail 11.

[0027] The annular slide rail 11 is hinged to the mounting base 1 via two hinge seats 12 arranged symmetrically at the front and rear. The annular slide rail 11 can rotate left and right along the two hinge seats 12.

[0028] Medical staff can rotate the annular slide rail 11 to tilt it along the two hinge seats 12. The perfusion device tilts synchronously with the annular slide rail 11. The perfusion device is tapped in the tilted state, which can change the rising path of the bubbles and make the vibration generated by the tapping more effective on the bubble accumulation area, thereby accelerating the detachment and discharge of the bubbles.

[0029] A gear ring 13 is fixedly installed on the inner side of the annular slide rail 11. The drive assembly includes a drive motor 21 installed on the lower side of the slide block 2. The output shaft of the drive motor 21 extends into the slide block 2 and is connected to a gear 22. The gear 22 meshes with the gear ring 13.

[0030] When the drive motor 21 starts, it drives the gear 22 to rotate. Since the gear 22 meshes with the gear ring 13, it drives the slide block 2 to slide along the annular slide rail 11.

[0031] The striking assembly includes a housing 3 mounted on the upper side of the slide 2. An incomplete tooth 31 is rotatably mounted on the inner wall of the housing 3. The incomplete tooth 31 is connected to the gear 22 for transmission. A connecting rod 32 is rotatably mounted on the outer wall of the housing 3 via a rotating shaft. A striking head 321 located below the irrigation device is mounted at the end of the connecting rod 32. The striking head 321 is used to strike the bottom of the irrigation device. The rotating shaft extends into the housing 3 and is connected to a fan-shaped tooth 33 that matches the incomplete tooth 31. A first spring 34 is provided between the two sides of the fan-shaped tooth 33 and the inner wall of the housing 3.

[0032] When gear 22 rotates and drives slide 2 to move along the annular slide rail 11, gear 22 transmits power to incomplete tooth 31. Gear 22 and incomplete tooth 31 are connected by two meshing bevel teeth. When the toothed part of incomplete tooth 31 meshes with sector tooth 33, it can drive sector tooth 33 to rotate around the pivot. That is, the pivot and connecting rod drive the striking head 321 to rotate upward and strike the bottom of the irrigation device. When the toothed part of incomplete tooth 31 leaves sector tooth 33, the spring force of the first spring 34 pushes sector tooth 33 to reset. In this way, incomplete tooth 31 rotates back and forth, which can drive the striking head 321 to continuously strike the bottom of the irrigation device. In this state, the hemispherical end of the tapping head 321 faces upward and taps the bottom of the irrigation device.

[0033] The clamping mechanism includes a mounting plate 4 located above the annular slide rail 11, and the mounting plate 4 is provided with a clamp 41.

[0034] The clamp 41 can be an electrically controlled clamp that pushes two arc-shaped clamps to hold the upper end of the irrigation device, exposing the side wall of the irrigation device so that the striking head 21 can strike the side wall of the irrigation device.

[0035] The connecting rod 32 is fixed with a sleeve 322 sleeved on the outside of the rotating shaft, and the sleeve 322 is fixedly connected to the rotating shaft by bolts; When striking the side wall of the irrigation device, the medical staff rotates the bolt so that it does not abut against the shaft, removes the sleeve 322 from the shaft, and makes the connecting rod 32 vertical. Then, the sleeve 322 is put back on the shaft and reconnected to the shaft with the bolt. At this time, the arc shape of the striking head 321 faces the side wall of the irrigation device. Then, the drive motor 21 drives the gear 22 to rotate. At this time, the rotation direction of the gear 22 is opposite to the direction when striking the bottom of the irrigation device, which drives the sector tooth 33 to rotate in the opposite direction. The arc shape of the striking head 321 can strike the side wall of the irrigation device. The first spring 34 on the other side is used to reset the device. Then the striking head 321 can move in a circle along the side wall of the irrigation device to strike it. A positioning groove can be provided on the rotating shaft. The position of the striking head 321 is positioned when the side wall or bottom of the irrigation device is struck by a bolt.

[0036] The striking head 321 has a hemispherical shape at one end for striking the bottom of the irrigation device, and an arc shape at the other end for striking the side wall of the irrigation device. The arc shape matches the curvature of the side wall of the irrigation device, resulting in a better striking effect.

[0037] The working principle of the embodiments is explained in detail below: Install the irrigation device: Use the two arc-shaped clamps of the electric control clamp to hold and fix the upper end of the irrigation device; Connect the infusion set to the extracorporeal circulation tubing: Connect the saline solution to the upper and lower ends of the extracorporeal circulation tubing and the perfusion device through the infusion set, and turn on the infusion set switch to allow the saline solution to flow through the perfusion device.

[0038] Starting device: Start the drive motor 21, drive the gear 22 to rotate, the gear 22 meshes with the gear ring 13, drive the slide block 2 to slide along the annular slide rail 11, at the same time, the gear 22 transmits power to the incomplete tooth 31, driving the tapping head 321 to continuously tap the bottom of the irrigation device, causing the air bubbles to be discharged.

[0039] The annular slide rail 11 can be flipped and tilted left and right to change the rising path of the bubbles and accelerate the detachment and discharge of the bubbles.

[0040] Side wall tapping: When it is necessary to tap the side wall of the irrigation device, remove the sleeve 322 from the rotating shaft, so that the connecting rod 32 is in a vertical position, and the arc shape of the tapping head 321 faces the side wall of the irrigation device. Adjust the rotation direction of the drive motor 21 to drive the sector tooth 33 to rotate in the opposite direction, and the tapping head 321 moves circumferentially along the side wall of the irrigation device to tap it.

[0041] Air purging complete: When no air bubbles are observed to be discharged from the infusion set, turn off the infusion set switch, stop the drive motor 21, remove the infusion set, and complete the pre-filling and air purging operation.

[0042] In other examples, the hinged base 12 and the mounting base 1 are elastically hinged; When the slide block 2 is located to the left or right of the annular slide rail 11, the annular slide rail 11 flips and tilts to the left or right.

[0043] refer to Figure 6 As shown, the specific structure of the elastic hinge is as follows: a fixed block 121 is fixed at the upper end of the mounting base 1, the hinge seat 12 is provided with a hinge shaft 122 rotatably mounted on the fixed block 121, the fixed block 121 is provided with an arc groove 123, the hinge shaft 12 extends into the arc groove 123 and a movable block 124 is fixed therein, and springs 125 are provided on both sides of the movable block 124. The springs 125 on both sides can keep the hinge shaft 122 in its initial position. That is, when the slide 2 is at the hinge seat 12, the annular slide rail 11 is in a horizontal state. When the slide 2 slides to the left of the annular slide rail 11, that is, with the hinge seat 12 as the dividing line, the slide 2 is on the left side of the annular slide rail 11. The weight on the left side of the annular slide rail 11 increases, so the hinge shaft 122 drives the movable block 124 to move to the left in the arc groove 123, pushing the left spring 125 to be compressed, causing the annular slide rail 11 to tilt to the left. Similarly, when the slide 2 is on the right side of the annular slide rail 11, the annular slide rail 11 tilts to the right. In this way, by using the weight of the slide 2 itself, when it moves along the circumference of the annular slide rail 11, it can drive the annular slide rail 11 to automatically tilt back and forth. The clamping mechanism and the irrigation device are both located between the center of the hinge seat 12 and the center of the annular slide rail 11. That is, the force on both sides of the hinge shaft will be uniform in the horizontal state. The spring force is greater than the weight of the clamping mechanism and the irrigation device as a whole. When the slide 2 is located between the two hinge seats 12, the spring force can automatically push the annular slide rail 11 to automatically return to the horizontal state. By increasing the overall weight of the slide block 2, the tilt angle of the annular slide rail 11 can be changed; Therefore, it is possible to make the perfusion device automatically tilt left and right to change the rising path of the bubbles while the tapping component is tapping evenly in a circular motion at the bottom of the perfusion device, thereby accelerating the detachment and discharge of the bubbles.

[0044] In other examples, an electrically controlled telescopic rod 42 is provided between the mounting plate 4 and the hinge seat 12 to drive the irrigation device to move up and down, so that the striking component can strike the side wall of the irrigation device.

[0045] The electric telescopic rod 42 can drive the clamp and the irrigation device to move up and down as a whole. The striking component can be used to strike the side wall of the irrigation device. The vibration of the side wall loosens the air bubbles in the gaps of the adsorbent and causes the air bubbles to move to the top surface. An opening may be provided on the front side of the annular slide rail 11, and a connecting block may be detachably installed inside the opening. When the connecting block is installed inside the opening, it forms part of the annular slide rail 11, ensuring that the slide 2 moves circumferentially along the annular slide rail 11. When installing the irrigation device, after the irrigation device is fixed by the clamping mechanism, the connecting block is removed, and the pipe connected to the bottom of the irrigation device enters the inner side of the annular slide rail 11 through the opening. Then the connecting block is reinstalled in the opening. In this way, when the irrigation device moves up and down relative to the annular slide rail 11, the pipe will not affect the use of the device because it is outside the annular slide rail 11.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A pre-filling and venting device for a blood perfusion apparatus, characterized in that, include: Mounting base (1), the upper end of which is equipped with a horizontally arranged annular slide rail (11). A clamping mechanism is installed above the annular slide rail (11) to fix the irrigation device at the center of the annular slide rail (11); The exhaust mechanism includes a slide (2), a drive assembly and a striking assembly. The slide (2) is slidably mounted on the annular slide rail (11). The drive assembly and the striking assembly are both located on the slide (2). The drive assembly is used to drive the slide (2) to slide along the annular slide rail (11) and drive the striking assembly to strike the bottom of the irrigator to exhaust air.

2. The pre-filling and venting device for a blood perfusion apparatus according to claim 1, characterized in that, The annular slide rail (11) is hinged to the mounting base (1) via hinge seats (12), and the annular slide rail (11) can be flipped along the two hinge seats (12).

3. The pre-filling and venting device for a blood perfusion apparatus according to claim 1, characterized in that, A gear ring (13) is fixedly installed on the inner side of the annular slide rail (11). The drive assembly includes a drive motor (21) installed on the lower side of the slide block (2). The output shaft of the drive motor (21) extends into the slide block (2) and is connected to a gear (22). The gear (22) meshes with the gear ring (13).

4. The pre-filling and venting device for a blood perfusion apparatus according to claim 3, characterized in that, The striking assembly includes a housing (3) mounted on the upper side of the slide (2). An incomplete tooth (31) is rotatably mounted on the inner wall of the housing (3). The incomplete tooth (31) is connected to the gear (22) for transmission. A connecting rod (32) is rotatably mounted on the outer wall of the housing (3) via a rotating shaft. A striking head (321) located below the irrigation device is mounted at the end of the connecting rod (32). The striking head (321) is used to strike the bottom of the irrigation device. The rotating shaft extends into the housing (3) and is connected to a fan-shaped tooth (33) that matches the incomplete tooth (31). A first spring (34) is provided between both sides of the fan-shaped tooth (33) and the inner wall of the housing (3).

5. The pre-filling and venting device for a blood perfusion apparatus according to claim 1, characterized in that, The clamping mechanism includes a mounting plate (4) installed above the annular slide rail (11), and the mounting plate (4) is provided with a clamp (41).

6. The pre-filling and venting device for a blood perfusion apparatus according to claim 4, characterized in that, The connecting rod (32) is fixed with a sleeve (322) sleeved on the outside of the rotating shaft, and the sleeve (322) is fixedly connected to the rotating shaft by bolts.

7. A pre-filling and venting device for a blood perfusion apparatus according to claim 6, characterized in that, The striking head (321) has a hemispherical shape at one end for striking the bottom of the irrigation device, and an arc shape at the other end for striking the side wall of the irrigation device.

8. A pre-filling and venting device for a blood perfusion apparatus according to claim 2, characterized in that, The hinge seat (12) and the mounting base (1) are elastically hinged; When the slide block (2) is located to the left or right of the annular slide rail (11), the annular slide rail (11) flips and tilts to the left or right.

9. A pre-filling and venting device for a blood perfusion apparatus according to claim 6, characterized in that, An electrically controlled telescopic rod (42) is provided between the mounting plate (4) and the hinge seat (12) to drive the irrigation device to move up and down, so that the striking component can strike the side wall of the irrigation device.

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