Auxiliary device for medical blood transfusion

Abstract

The invention relates to an auxiliary device for medical blood transfusion, and belongs to the technical field of blood transfusion instruments.The auxiliary device comprises a bottom plate horizontally and fixedly arranged on the upper side of a transfusion rod, a first rotating shaft horizontally arranged on the upper side of the bottom plate and rotationally connected with the bottom plate, a connecting plate vertically and fixedly arranged on the first rotating shaft, and a hook fixedly arranged on one side of the connecting plate; the first supporting plate is obliquely and upwards connected to the side, close to the hook, of the bottom plate, the multiple protrusions are fixedly arranged on the side, close to the hook, of the first supporting plate at equal intervals, and the driving mechanism is arranged on the bottom plate and used for driving the first rotating shaft to rotate; a blood bag is buckled and hung on a hook, then a driving mechanism and a first rotating shaft drive a connecting plate and the blood bag to rotate, red blood cells gathered on one side of an outlet of the blood bag synchronously move towards the other side along with plasma, and meanwhile when the connecting plate rotates towards the side close to a first supporting plate, the blood bag is integrally pressed through a protrusion; erythrocytes are dispersed to everywhere of the blood bag, and blood is prevented from flowing out of the blood bag slowly.

Description

Technical Field

[0001] The present invention belongs to the technical field of blood transfusion equipment, and in particular relates to an auxiliary device for medical blood transfusion. Background Art

[0002] Blood transfusion refers to a treatment method in which blood is infused into a patient through a vein. It is widely used in clinical practice for patients with blood loss, anemia, etc. During a blood transfusion, the blood is usually placed in a blood bag. After one end of the catheter of the blood transfusion device is connected to the blood bag, the blood bag is hung high, and the other end of the catheter is connected to an indwelling needle or a central venous catheter, so that the blood is transfused into the vein. However, the red blood cells in the blood bag are prone to form aggregates or clots, which will settle to the outlet of the blood bag during the transfusion, causing the outlet of the blood bag to be blocked and blood to be difficult to flow out.

[0003] Research has found that blood contains platelets, which release coagulation factors, causing the red blood cells in the blood to aggregate into clumps. In order to prevent red blood cells from forming aggregates or clots, anticoagulants are generally added directly during blood collection to reduce the activity of coagulation factors and prevent the red blood cells in the blood from agglomerating. However, during the transfusion process, the blood bag is hung on the infusion stand, and the density of red blood cells is greater than that of plasma. Some red blood cells will still gather on the outlet side of the blood bag, causing the blood to flow out of the blood bag more and more slowly.

[0004] At present, in order to increase the speed of blood transfusion, the existing technology often uses auxiliary equipment to repeatedly press both sides of the outlet of the hanging blood bag during blood transfusion, so that the red blood cells gathered at the outlet of the blood bag are dispersed, and the aggregated red blood cells are prevented from affecting the speed of blood outflow. However, there is less air retained inside the blood bag, which is to reduce the degradation of blood components by oxygen, so that the amplitude of pressing the blood bag is small, and the red blood cells are only repeatedly dispersed and gathered on one side of the outlet of the blood bag, which makes it difficult to disperse the red blood cells to various parts of the blood bag. The speed of blood flowing out of the blood bag is still slow, resulting in limited improvement in the speed of blood transfusion. Summary of the invention

[0005] In view of this, the present invention provides an auxiliary device for medical blood transfusion to solve the deficiencies in the prior art. The present invention can disperse red blood cells to various parts of a blood bag and prevent red blood cells from affecting the speed at which blood flows out of the blood bag.

[0006] The technical solution of the present invention is: a medical blood transfusion auxiliary device, configured and connected to an infusion pole, including a bottom plate horizontally fixed on the upper side of the infusion pole, a first rotating shaft horizontally arranged on the upper side of the bottom plate, the first rotating shaft rotatably connected to the bottom plate, a connecting plate vertically fixed on the first rotating shaft and parallel to the central axis thereof, a hook fixed on one side of the connecting plate, a blood bag hung on the hook, one side of the blood bag abutting against the connecting plate, a first supporting plate obliquely connected upwardly to a side of the bottom plate close to the hook and parallel to the central axis of the first rotating shaft, the connecting plate rotates toward a side close to the first supporting plate so that the other side of the blood bag abuts against the first supporting plate, a plurality of protrusions are equidistantly fixed on a side of the first supporting plate close to the hook so that the protrusions press the blood bag, a driving mechanism is arranged on the bottom plate, and an output end of the driving mechanism is connected to the first rotating shaft for driving the first rotating shaft to rotate.

[0007] Optionally, a slide groove is vertically opened on one side of the connecting plate close to the protrusion, a support rod is passed through the slide groove and is slidably connected to the slide groove along the center line direction of the slide groove, the hook is fixedly connected to the upper end of the support rod, the lower end of the support rod extends out of the slide groove, and an elastic member is connected to the connecting plate, the first support plate is hinged to the base plate, and its hinge axis is parallel to the first rotating shaft, and a transmission mechanism is provided on the base plate, the input end of the transmission mechanism is connected to the support rod, and the output end of the transmission mechanism is connected to the first support plate, for driving the first support plate to rotate.

[0008] Optionally, the transmission mechanism includes: an arc-shaped plate and two connecting rods, the arc-shaped plate is arranged directly below the support rod, the opening of the arc-shaped plate faces upward and its center line is parallel to the first rotating shaft, a guide hole is vertically opened on the bottom plate, one end of the support rod away from the hook extends out of the connecting plate and passes through the guide hole, the support rod abuts against the inner side of the arc-shaped plate, the two connecting rods are vertically penetrated on the bottom plate and are located on both sides of the connecting plate, the connecting rods are slidably connected to the bottom plate in the vertical direction, one end of the two connecting rods is fixedly connected to the arc-shaped plate, and the other end of one of the connecting rods is slidably connected to the side of the first support plate away from the protrusion.

[0009] Optionally, a second support plate is provided on the side of the connecting plate away from the first support plate, the second support plate and the first support plate are symmetrically arranged on both sides of the connecting plate, the second support plate is hinged to the bottom plate, and the hinge axis and the first rotating axis are parallel to each other, the protrusion is fixed on the side of the second support plate close to the connecting plate, and a plurality of through holes are horizontally opened at equal intervals on the connecting plate so that the protrusion can pass through the through holes to press the blood bag, and one end of another connecting rod away from the arc plate is slidably connected to the side of the second support plate away from the protrusion.

[0010] Optionally, two guard plates are fixedly provided on one side of the second support plate and the first support plate close to the connecting plate, respectively. The guard plates are perpendicular to the central axis of the first rotating shaft. The first support plate or the second support plate extends from one end of the guard plate close to the bottom plate, and the first rotating shaft passes through the guard plates and is rotatably connected thereto respectively.

[0011] Optionally, two second rotating shafts are horizontally provided on the lower side of the base plate, and are respectively located on the side of the connecting rod away from the connecting plate. The central axis of the second rotating shaft is parallel to the central axis of the first rotating shaft, and the second rotating shaft is rotatably connected to the base plate around its circumference. Two limit plates are fixed on the two second rotating shafts at an angle downward and are parallel to the central axis of the two second rotating shafts. The two limit plates extend from one end away from the second rotating shaft to a side close to each other. A gear is mounted on one end of the second rotating shaft, and a tooth groove is continuously opened on one side of the connecting rod along its length direction, and the tooth groove is meshed with the gear.

[0012] Optionally, a pressure sensing element is fixedly disposed horizontally on one end of the limit plate away from the second rotating shaft, and the pressure sensing element is located at an edge of one side where the two limit plates are close to each other.

[0013] Optionally, the hook is L-shaped, with its horizontal end fixedly connected to the support rod and its vertical section arranged vertically upward.

[0014] Optionally, an arc-shaped through groove is formed on one side of the connecting plate close to the hook in a vertical direction, and the blood bag abuts against the arc-shaped through groove.

[0015] Optionally, the height of the protrusion gradually decreases from one side close to the bottom plate to the other side.

[0016] Compared with the prior art, the present invention provides an auxiliary device for medical blood transfusion, which can hang the blood bag on the hook through the cooperation of the bottom plate, the connecting plate and the hook. One side of the blood bag is in contact with the connecting plate, and then the connecting plate and the blood bag are driven to rotate by the driving mechanism and the first rotating shaft. The centrifugal force is used to make the plasma in the blood bag flow from one side of the blood bag outlet to the other side, so that the red blood cells gathered on one side of the blood bag outlet move to the other side synchronously with the plasma. At the same time, when the connecting plate rotates toward the side close to the first support plate, the protrusion is used to press the blood bag as a whole, so that the red blood cells are dispersed to various parts of the blood bag, avoiding the slow flow of blood out of the blood bag, thereby ensuring that the transfusion speed meets the treatment needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a top view of the auxiliary device of the present invention;

[0018] Figure 2 is a front view of the auxiliary device of the present invention;

[0019] Figure 3 It is a right side view of the auxiliary device of the present invention;

[0020] Figure 4 The present invention Figure 1 AA section view;

[0021] Figure 5 The present invention Figure 2 BB cross-sectional view;

[0022] Figure 6 The present invention Figure 2 An enlarged schematic diagram of point C;

[0023] Figure 7 It is a usage status diagram of the auxiliary device of the present invention. DETAILED DESCRIPTION

[0024] The present invention provides a medical blood transfusion auxiliary device, Figures 1 to 7 The present invention is described with reference to the structural schematic diagram of FIG.

[0025] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the technical solutions of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] Blood transfusion refers to a treatment method in which blood is infused into a patient through a vein. It is widely used in clinical practice for patients with blood loss, anemia, etc. During a blood transfusion, the blood is usually placed in a blood bag. After one end of the catheter of the blood transfusion device is connected to the blood bag, the blood bag is hung high, and the other end of the catheter is connected to an indwelling needle or a central venous catheter, so that the blood is transfused into the vein. However, the red blood cells in the blood bag are prone to form aggregates or clots, which will settle to the outlet of the blood bag during the transfusion, causing the outlet of the blood bag to be blocked and blood to be difficult to flow out.

[0027] Research has found that blood contains platelets, which release coagulation factors, causing the red blood cells in the blood to aggregate into clumps. In order to prevent red blood cells from forming aggregates or clots, anticoagulants are generally added directly during blood collection to reduce the activity of coagulation factors and prevent the red blood cells in the blood from agglomerating. However, during the transfusion process, the blood bag is hung on the infusion stand, and the density of red blood cells is greater than that of plasma. Some red blood cells will still gather on the outlet side of the blood bag, causing the blood to flow out of the blood bag more and more slowly.

[0028] At present, in order to increase the speed of blood transfusion, the existing technology often uses auxiliary equipment to repeatedly press both sides of the outlet of the hanging blood bag during blood transfusion, so that the red blood cells gathered at the outlet of the blood bag are dispersed, and the aggregated red blood cells are prevented from affecting the speed of blood outflow. However, there is less air retained inside the blood bag, which is to reduce the degradation of blood components by oxygen, such as the oxidative damage to red blood cells, so that the amplitude of pressing the blood bag is small, and the red blood cells are only repeatedly dispersed and gathered on one side of the outlet of the blood bag, which makes it difficult to disperse the red blood cells to various parts of the blood bag. The speed of blood flowing out of the blood bag is still slow, resulting in limited improvement in the speed of blood transfusion.

[0029] Based on the above problems, an embodiment of the present invention provides an auxiliary device for medical blood transfusion. The bottom plate cooperates with the connecting plate and the hook to hang the blood bag on the hook. One side of the blood bag is in contact with the connecting plate. The connecting plate and the blood bag are then driven to rotate by the driving mechanism and the first rotating shaft. The centrifugal force is used to make the plasma in the blood bag flow from one side of the blood bag outlet to the other side, so that the red blood cells gathered on one side of the blood bag outlet move synchronously with the plasma to the other side. At the same time, when the connecting plate rotates toward the side close to the first support plate, the protrusion is used to press the blood bag as a whole, so that the red blood cells are dispersed to various parts of the blood bag, avoiding the red blood cells from affecting the speed of blood flowing out of the blood bag, thereby ensuring that the transfusion speed meets the treatment needs. The auxiliary device for blood transfusion of the present invention has good effect, is easy to use, has strong practicality, and is worthy of promotion.

[0030] As shown in the figure, Figure 1 4 and 5. The first and second control devices are used to control the rotation of the control rod 1 and the control rod 2. The control rod 1 has two guide rails, one for adjusting the position of the control rod and the other for adjusting the position of the control rod 2. The first and second control plates 1 are used to control the rotation of the control rod 1. When the control rod 1 is in motion, the control rod 2 moves in a direction opposite to the control rod 2. When the control rod 1 is in motion, the control rod 2 moves in a direction opposite to the control rod 2. When the control rod 1 is in motion, the control rod 2 moves in a direction opposite to the control rod 2.

[0031] The blood transfusion auxiliary device disclosed in this embodiment is used as follows Figure 7As shown, the through hole opened on one side of the bottom plate 1 is used to allow the infusion rod 10 or other rod bodies to pass through the through hole, and the infusion rod or other rod bodies are fixed from the upper and lower sides of the bottom plate 1 by using the limiting steps and fasteners on the infusion rod or other rod bodies. When blood transfusion is needed, the catheter of the blood transfusion device is first connected with the blood bag, and then the blood bag is hung on the hook 4 by using the hanging hole at the tail of the blood bag. The position of the blood bag is adjusted so that one side of the blood bag is against the connecting plate 3 (the two sides of the blood bag filled with blood are slightly bulged), and then the other end of the catheter is connected with the patient's indwelling needle or central venous catheter to achieve blood transfusion into the patient's vein. During the blood transfusion process, red blood cells will gather downward due to their high density. To the outlet side of the blood bag, the driving mechanism of the device drives the first rotating shaft 2 to rotate, thereby causing the connecting plate 3 and the blood bag to rotate, and the centrifugal force of the blood bag rotation causes the plasma and the aggregated red blood cells inside the blood bag to move toward the tail side of the blood bag, especially the red blood cells aggregated on the outlet side of the blood bag also move in clusters along with the plasma. When the connecting plate 3 rotates toward the side close to the first supporting plate 5, the protrusion 6 is used to press the blood bag as a whole, so that the red blood cells moving in clusters are dispersed, thereby dispersing the red blood cells to various parts of the blood bag. Repeating the above process can prevent the red blood cells from gathering at the outlet of the blood bag and affecting the speed at which blood flows out of the blood bag.

[0032] In this embodiment, the first rotating shaft 2 passes through the connecting plate 3 and is fixedly connected thereto. At the same time, the driving mechanism includes a motor 8, which is fixedly mounted on the upper side of the base plate 1, and also includes a reducer and an external controller that cooperate with it. The motor 8 can drive the first rotating shaft 2 to perform repeated rotational motion, thereby driving the connecting plate to rotate repeatedly, so that the blood bag as a whole rotates repeatedly, and the red blood cells are dispersed to various parts of the blood bag by centrifugal force and the pressure of the protrusion 6.

[0033] As a further optimization scheme, in the disclosed embodiment, a slide groove 31 is vertically opened on one side of the connecting plate 3 close to the protrusion 6, a support rod 32 is passed through the slide groove 31, and is slidably connected to the slide groove 31 along the center line direction of the slide groove 31, the hook 4 is fixedly connected to the upper end of the support rod 32, the lower end of the support rod 32 extends out of the slide groove 31, and an elastic member 33 is connected between the connecting plate 3, the first support plate 5 is hinged to the base plate 1, and its hinge axis is parallel to the first rotating shaft 2, and a transmission mechanism is provided on the base plate 1, the input end of the transmission mechanism is connected to the support rod 32, and the output end thereof is connected to the first support plate 5, for driving the first support plate 5 to rotate.

[0034] In this embodiment, the slide groove 31 and the support rod 32 on the connecting plate 3 are used to realize that when the blood bag is hung on the hook, the weight of the blood bag is used to drive the support rod 32 to move downward, and the transmission mechanism is used to drive the first support plate 5 to rotate toward the side away from the connecting plate 3, so that when the amount of blood in the blood bag is large, the rotation angle of the blood bag is increased, and the effect of centrifugal force driving the movement of red blood cells is improved. During the blood transfusion process, as the blood in the blood bag continues to decrease, the support rod 32 uses the elastic member 33 to automatically move upward, and at the same time drives the first support plate 5 to rotate toward the side close to the connecting plate 3, so that according to the decrease in the volume of blood in the blood bag, the angle between the first support plate 5 and the connecting plate 3 is continuously reduced. As the blood volume in the blood bag decreases, the remaining space inside the blood bag increases due to the decrease in blood, and the rotation angle of the blood bag is appropriately reduced to prevent all the blood at the blood bag outlet from flowing to other areas (causing no blood in the blood bag outlet area).

[0035] At the same time, when the blood bag automatically moves up, the protrusions can also be used to scrape the blood on the inner wall of the blood bag to prevent the blood from adhering to the inner wall of the blood bag.

[0036] In this embodiment, a limiting ring 321 and an elastic member 33 are fixedly mounted on the side of the support rod 32 away from the hook 4, and a spring is used as the elastic member 33. The spring is located between the limiting ring 321 and the connecting plate 3 and is connected to them respectively, so that when the weight of the blood bag on the hook decreases, the support rod 32 is automatically driven to move to the side away from the bottom plate 1.

[0037] The specific structure of the transmission mechanism in the above embodiment is as follows: Figure 4 This is the AA cross-sectional view of the auxiliary device of this embodiment. The transmission mechanism includes: an arc plate 34 and two connecting rods 35. The arc plate 34 is arranged directly below the support rod 32. The opening of the arc plate 34 faces upward and its center line is parallel to the first rotating shaft 2. A guide hole 11 is vertically opened on the bottom plate 1. The end of the support rod 32 away from the hook 4 extends out of the connecting plate 3 and passes through the guide hole 11. The support rod 32 abuts against the inner side of the arc plate 34. Two connecting rods 35 are vertically penetrated on the bottom plate 1 and are located on both sides of the connecting plate 3. The connecting rods 35 are slidably connected to the bottom plate 1 along the vertical direction. One end of the two connecting rods 35 is fixedly connected to the arc plate 34, and the other end of one of the connecting rods 35 is slidably connected to the side of the first support plate 5 away from the protrusion 6.

[0038] In this embodiment, the arc plate 34 is used in conjunction with the connecting rod 35, so that when the support rod 32 moves downward, the arc plate 34 is driven downward, and then the connecting rod 35 drives the first support plate 5 to rotate toward the side away from the connecting plate 3. At the same time, the support rod 32 is slidably connected to the arc plate 34 along the circumferential direction of the arc plate 34, which can not only synchronously drive the arc plate and the connecting rod 35 to move upward when the weight of the blood bag is reduced, but also prevent the support rod 32 from shaking back and forth along its axial direction during rotation.

[0039] In this embodiment, a slide groove 341 is formed on the inner side of the arc plate 34 around its circumference, and a slider 321 is fixedly disposed at one end of the support rod 32 away from the hook 4 . The slider 321 is disposed in the slide groove 341 and slidably connected thereto.

[0040] In this embodiment, the guide hole 11 extends in a direction perpendicular to the central axis of the first rotating shaft 2 , so that the guide hole 11 is a rectangular hole, and the long side of the rectangular hole is perpendicular to the central axis of the first rotating shaft 2 .

[0041] At the same time, the vertical lead-in hole 11 on the bottom plate 1 facilitates the catheter of the blood transfusion device to pass through the lead-in hole 11 and communicate with the blood bag.

[0042] In this embodiment, a horizontal through slot 15 is provided on one side of the bottom plate 1 at the lead hole 11 . The through slot 15 is parallel to the central axis of the first rotating shaft 2 . The horizontal through slot 15 is connected to the lead hole 11 , so as to facilitate placing the catheter into the lead hole 11 .

[0043] As shown in the figure, Figure 6 This is an enlarged schematic diagram of point C of the auxiliary device of this embodiment. A slide rail 37 is fixedly provided on the side of the first support plate 5 away from the connecting plate 3. The slide rail 37 is perpendicular to the central axis of the first rotating shaft 2. A cylinder 38 is fixedly provided on the end of the connecting rod 35 away from the arc plate 34. The cylinder 38 is parallel to the central axis of the first rotating shaft 2. The cylinder 38 is embedded in the slide rail 37 and is slidably connected thereto.

[0044] The slide rail 37 in the above embodiment can also adopt an elongated trough body, the mouth of the elongated trough body is fixedly connected to the first support plate 5, and a penetrating connecting groove is opened along its length direction on the side of the elongated trough body away from the first support plate 5. The connecting rod 35 passes through the connecting groove and extends into the interior of the elongated trough body, and the cylinder 38 is slidably connected to the inner wall of the elongated trough body.

[0045] As a further optimization solution, in the embodiments of the present disclosure, if Figure 5 It is a BB cross-sectional view of the auxiliary device of this embodiment. A second support plate 7 is provided on the side of the connecting plate 3 away from the first support plate 5. The second support plate 7 and the first support plate 5 are symmetrically arranged on both sides of the connecting plate 3. The second support plate 7 is hinged to the bottom plate 1, and the hinge axis is parallel to the first rotating shaft 2. The protrusion 6 is fixed on the side of the second support plate 7 close to the connecting plate 3. A plurality of through holes 71 are horizontally opened at equal intervals on the connecting plate 3 so that the protrusion 6 passes through the through holes 71 to press the blood bag. Another connecting rod 35 is slidably connected to the end away from the arc plate 34 and the side of the second support plate 7 away from the protrusion 6.

[0046] In this embodiment, a second support plate 7 is arranged on the other side of the connecting plate, and a through hole 71 is opened on the connecting plate 3, so that the protrusion on the second support plate 7 passes through the through hole 71 to press the blood bag, further improving the dispersion effect of red blood cells during blood transfusion.

[0047] In this embodiment, the through hole 71 has a certain length in the vertical direction (when the connecting plate 3 is vertical), and the inner walls at both ends in the vertical direction are arc-shaped.

[0048] As a further optimization solution, in the embodiments of the present disclosure, if Figure 2 This is a front view of the auxiliary device of this embodiment. Two guard plates 51 are fixedly provided on one side of the second support plate 7 and the first support plate 5 close to the connecting plate 3. The guard plates 51 are perpendicular to the central axis of the first rotating shaft 2. The first support plate 5 or the second support plate 7 is extended from one end of the guard plate 51 close to the bottom plate 1. The first rotating shaft 2 passes through the guard plates 51 and is rotatably connected thereto respectively.

[0049] In this embodiment, a guard plate 51 is provided on the second support plate 7 and the first support plate 5. When the blood bag approaches the second support plate 7 and the first support plate 5, the guard plate 51 is used to squeeze the blood bag from both ends (located at both ends of the central axis direction of the first rotating shaft 2), thereby further improving the dispersion effect on the red blood cells in the blood bag.

[0050] According to the above analysis, a horizontal through slot 15 is provided on the bottom plate 1 , and in this embodiment, only the guard plate 51 away from the horizontal through slot 15 extends the first support plate 5 or the second support plate 7 to be rotatably connected to the first rotating shaft 2 .

[0051] In the above-mentioned embodiment, the two sides of the blood bag are pressed by the protrusions on the first support plate and the second support plate. It is necessary to avoid excessive pressing force to cause damage to the blood bag.

[0052] To this end, the present embodiment proposes a solution, two second rotating shafts 12 are horizontally provided on the lower side of the base plate 1, and are respectively located on the side of the connecting rod 35 away from the connecting plate 3, the second rotating shaft 12 is parallel to the central axis of the first rotating shaft 2, the second rotating shaft 12 is rotatably connected to the base plate 1 around its circumference, two limit plates 13 are fixedly provided on the two second rotating shafts 12 at an angle downward, and are parallel to the central axis thereof, the two limit plates 13 extend from one end away from the second rotating shaft 12 to a side close to each other, a gear is mounted on one end of the second rotating shaft 12, and a tooth groove is continuously opened on one side of the connecting rod 35 along its length direction, and the tooth groove is meshed with the gear.

[0053] In this embodiment, the second rotating shaft 12 is used in conjunction with the limit plate 13, the gear and the sink groove, so that the connecting rod 35 can drive the gear and the second rotating shaft 12 to rotate, thereby driving the two limit plates 13 to rotate, so that the limit plate and the support rod 32 cooperate to limit the rotation angle of the connecting plate 3 (for the current weight of the blood bag, the angle between the connecting plate and the first support plate and the second support plate is fixed, and the angle between the limit plate 13 and the support rod 32 is 92% to 96% of the angle between the connecting plate and the first support plate or the second support plate), thereby avoiding excessive pressing pressure on the blood bag by the protrusion.

[0054] In this embodiment, the limit plate 13 is located on the upper side of the arc plate 34, and the two ends of the second rotating shaft 12 are sleeved with connecting seats 14 and are rotatably connected thereto. The connecting seats 14 are fixedly connected to the bottom plate 1, and at the same time, the two ends of the second rotating shaft 12 extend out of the connecting seats 14 and the gears are sleeved thereon. There are two connecting rods 35 slidingly connected to the first support plate 5 and the second support plate 7 respectively. The two connecting rods 35 located on the same side of the connecting plate 3 are located on the side away from the two connecting seats 14, which can avoid hindering the rotation of the limit plate 13.

[0055] As a further optimization solution, in the disclosed embodiment, a pressure sensing element is horizontally fixed to one end of the limiting plate 13 away from the second rotating shaft 12 , and the pressure sensing element is located at an edge of one side where the two limiting plates 13 are close to each other.

[0056] In this embodiment, the pressure sensing element can detect the pressure of the support rod 32 abutting against the limit plate 13 on one side when the support rod 32 rotates to the side. When the pressure is detected, the external controller is used to reverse the rotation of the motor.

[0057] The pressure sensing element in this embodiment can be a flexible film pressure sensitive sensor, which has a certain length to achieve stable detection of the abutment between the support rod 32 and the limit plate 13, further improving the stability during blood transfusion.

[0058] As a further optimization solution, in the disclosed embodiment, the hook 4 is L-shaped, with its horizontal end fixedly connected to the support rod 32 and its vertical section arranged vertically upward.

[0059] In this embodiment, an L-shaped hook 4 is used to improve the stability of the blood bag hanging on the hook 4 and prevent the blood bag from falling off when rotating.

[0060] As a further optimization solution, in the embodiments of the present disclosure, if Figure 3 This is a right view of the auxiliary device of this embodiment. An arc-shaped through groove 36 is opened in the vertical direction on one side of the connecting plate 3 close to the hook 4, and the blood bag abuts against the arc-shaped through groove 36.

[0061] In this embodiment, an arcuate through groove 36 is provided on the connecting plate 3, and the arcuate through groove 36 is adapted to fit the arcuate contour of the cross section of the blood bag, thereby further improving the pressing effect of the protrusion on the blood bag.

[0062] As a further optimization solution, in the disclosed embodiment, the height of the protrusion 6 gradually decreases from one side close to the bottom plate 1 to the other side.

[0063] In this embodiment, the height of the protrusion is changed because when the blood bag is hung during blood transfusion, the blood in the blood bag will be squeezed toward the outlet side of the blood bag due to gravity, causing the contour of the outlet side of the blood bag to be slightly larger than the other side. The height of the protrusion 6 gradually decreases from the side close to the bottom plate 1 to the other side, so that when the protrusion presses the blood bag, it first presses the side close to the outlet, and then gradually extends and presses toward the side close to the hook, so that the red blood cells are dispersed to the blood at various positions in the blood bag as much as possible.

[0064] The above disclosure is only a preferred specific embodiment of the present invention, but the embodiments of the present invention are not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A medical blood transfusion auxiliary device, configured to be connected to an infusion pole, characterized in that: include: A bottom plate (1) is horizontally fixed on the upper side of the infusion pole; A first rotating shaft (2) is horizontally arranged on the upper side of the bottom plate (1), and the first rotating shaft (2) is rotatably connected to the bottom plate (1); A connecting plate (3) is vertically fixed on the first rotating shaft (2) and is parallel to the axis thereof; A hook (4) is fixedly mounted on one side of the connecting plate (3), and a blood bag is hung on the hook (4), with one side of the blood bag abutting against the connecting plate (3); The first support plate (5) is connected to the side of the bottom plate (1) close to the hook (4) in an inclined manner and is parallel to the central axis of the first rotating shaft (2); the connecting plate (3) rotates toward the side close to the first support plate (5) so that the other side of the blood bag abuts against the first support plate (5); A plurality of protrusions (6) are fixedly arranged at equal intervals on a side of the first support plate (5) close to the hook (4) so ​​that the protrusions (6) press the blood bag; The driving mechanism is arranged on the bottom plate (1), and the output end of the driving mechanism is connected to the first rotating shaft (2) and is used to drive the first rotating shaft (2) to rotate.

2. The medical blood transfusion auxiliary device according to claim 1, characterized in that: A slide groove (31) is vertically opened on one side of the connecting plate (3) close to the protrusion (6), a support rod (32) is passed through the slide groove (31) and is slidably connected to the slide groove (31) along the center line direction of the slide groove (31), the hook (4) is fixedly connected to the upper end of the support rod (32), an elastic member (33) is connected between the support rod (32) and the connecting plate (3), the first support plate (5) is hinged to the bottom plate (1), and its hinge axis is parallel to the first rotating shaft (2), a transmission mechanism is provided on the bottom plate (1), the input end of the transmission mechanism is connected to the support rod (32), and the output end of the transmission mechanism is connected to the first support plate (5), so as to drive the first support plate (5) to rotate.

3. The medical blood transfusion auxiliary device according to claim 2, characterized in that: The transmission mechanism comprises: an arc plate (34) and two connecting rods (35), wherein the arc plate (34) is arranged directly below the supporting bottom plate (1), the opening of the arc plate (34) faces upward and the center line thereof is parallel to the first rotating shaft (2), a guide hole (11) is vertically opened on the bottom plate (1), one end of the support rod (32) away from the hook (4) extends out of the connecting plate (3) and passes through the guide hole (11), the support rod (32) is slidably connected to the arc plate (34) along the circumferential direction thereof, the two connecting rods (35) are vertically penetrated on the bottom plate (1) and are located on both sides of the connecting plate (3), the connecting rods (35) are slidably connected to the bottom plate (1) along the vertical direction, one end of the two connecting rods (35) is fixedly connected to the arc plate (34), and the other end of one of the connecting rods (35) is slidably connected to the side of the first supporting plate (5) away from the protrusion (6).

4. The medical blood transfusion auxiliary device according to claim 3, characterized in that: A second support plate (7) is provided on a side of the connecting plate (3) away from the first support plate (5); the second support plate (7) and the first support plate (5) are symmetrically arranged on both sides of the connecting plate (3); the second support plate (7) is hinged to the bottom plate (1), and the hinge axis is parallel to the first rotating axis (2); the protrusion (6) is fixedly arranged on a side of the second support plate (7) close to the connecting plate (3); a plurality of through holes (71) are horizontally opened at equal intervals on the connecting plate (3) so that the protrusion (6) passes through the through holes (71) to press the blood bag; and one end of another connecting rod (35) away from the arc plate (34) is slidably connected to a side of the second support plate (7) away from the protrusion (6).

5. The medical blood transfusion auxiliary device according to claim 4, characterized in that: Two guard plates (51) are respectively fixedly provided on one side of the second support plate (7) and the first support plate (5) close to the connecting plate (3); the guard plates (51) are perpendicular to the central axis of the first rotating shaft (2); one end of the guard plate (51) close to the bottom plate (1) extends out of the first support plate (5) or the second support plate (7); the first rotating shaft (2) passes through the guard plates (51) and is respectively rotatably connected thereto.

6. The medical blood transfusion auxiliary device according to claim 3, characterized in that: Two second rotating shafts (12) are horizontally arranged on the lower side of the base plate (1) and are respectively located on the side of the connecting rod (35) away from the connecting plate (3). The central axis of the second rotating shaft (12) and the first rotating shaft (2) are parallel to each other. The second rotating shaft (12) is rotatably connected to the base plate (1) around its circumference. Two limiting plates (13) are fixedly arranged on the two second rotating shafts (12) in an inclined downward direction and are parallel to the central axis thereof. The two limiting plates (13) extend from one end away from the second rotating shaft (12) to a side close to each other. A gear is mounted on one end of the second rotating shaft (12). A tooth groove is continuously opened on one side of the connecting rod (35) along its length direction, and the tooth groove is meshed with the gear.

7. The medical blood transfusion auxiliary device according to claim 6, characterized in that: A pressure sensing element is horizontally fixedly disposed at one end of the limiting plate (13) away from the second rotating shaft (12), and the pressure sensing element is located at an edge of one side where the two limiting plates (13) are close to each other.

8. The medical blood transfusion auxiliary device according to claim 2, characterized in that: The hook (4) is L-shaped, with its horizontal end fixedly connected to the support rod (32) and its vertical section arranged vertically upward.

9. The medical blood transfusion auxiliary device according to claim 1, characterized in that: An arc-shaped through groove (36) is provided in the vertical direction on one side of the connecting plate (3) close to the hook (4), and the blood bag abuts against the arc-shaped through groove (36).

10. The medical blood transfusion auxiliary device according to claim 1, characterized in that: The height of the protrusion (6) gradually decreases from one side close to the bottom plate (1) to the other side.

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