Arc-shaped swing-type blood sampling scale

Abstract

This patent discloses an arc-shaped swinging blood sampling scale, including a scale body and a scale pan, wherein the scale pan is arranged above the scale body; the scale body and the scale pan are of separable design, a weighing sensor and a first driving device are arranged inside the scale body, the first driving device is arranged above the weighing sensor and the weighing end of the weighing sensor is connected to the first driving device, the driving end of the first driving device extends to the outside of the scale body and is transmission-connected to the scale pan; the scale pan, driven by the first driving device, performs an arc-shaped swinging motion relative to the scale body with a virtual axis as the axis core, and the virtual axis is located above the scale pan. This patent is used to prevent the weighing sensor in the blood sampling scale from being damaged during the handling and transportation of the blood sampling scale, so as to ensure accurate blood sampling and weighing and increase the product life. At the same time, during the blood sampling process, it is ensured that the blood in the blood bag is evenly mixed with the anticoagulant.

Description

Technical Field

[0001] This patent relates to the technical field of blood sampling scales, and specifically to an arc-shaped swinging blood sampling scale. Background Art

[0002] The existing blood scales are relatively simple in function and can only solve the problems of blood weighing and swing anticoagulation. Generally, a quadrilateral connecting rod swinging structure supported by an axis is adopted. The biggest disadvantage of this design is that the scale body and the scale pan are tightly connected as one. If the scale pan is pressed or hit during handling and transportation, the built-in weighing sensor of the scale body will be hit accordingly. In severe cases, the weighing sensor cannot accurately sample. This makes it easy for inaccurate weighing to occur during the use of the blood collection scale, and the product life is seriously affected. At the same time, the traditional scale pan swinging method cannot achieve a thorough and uniform mixing of the blood and anticoagulant in the blood bag. Summary of the invention

[0003] The purpose of this patent is to design an arc-shaped swinging blood sampling scale to prevent the weighing sensor in the blood sampling scale from being damaged during the transportation of the blood sampling scale, so as to ensure accurate blood weighing and increase the product life. At the same time, during the blood sampling process, it is ensured that the blood in the blood bag is mixed more evenly with the anticoagulant.

[0004] To achieve the above purpose, this patent provides the following technical solutions:

[0005] The technical solution of the present invention is: an arc-shaped swinging blood sampling scale, comprising a scale body and a scale pan, wherein the scale pan is arranged above the scale body; the scale body and the scale pan are of separable design, a weighing sensor and a first driving device are arranged inside the scale body, the first driving device is arranged above the weighing sensor and the weighing end of the weighing sensor is connected to the first driving device, the driving end of the first driving device extends to the outside of the scale body and is transmission-connected to the scale pan; when driven by the first driving device, the scale pan performs an arc-shaped swinging motion relative to the scale body with a virtual axis as the axis core, and the virtual axis is located above the scale pan.

[0006] Furthermore, the first driving device includes a plate frame, and the plate frame is provided with a plurality of transmission mechanisms, each of which includes a first rotating motor and a friction wheel, and the driving end of the first rotating motor is connected to the friction wheel; the upper surface of the scale body is provided with an inwardly concave arc groove, and the lower surface of the scale pan is designed to be an arc structure that matches the arc groove, and the upper end surface of the friction wheel extends out of the upper surface of the arc groove and is in contact with the lower surface of the scale pan, and the upper end surface of the friction wheel is lower than the highest surface of the arc groove. In this way, when the scale pan is placed in the arc groove of the scale body and supported on the friction wheel, the first rotating motor drives the friction wheel to rotate, and uses friction transmission to drive the scale pan to perform an arc-shaped swinging motion along its own arc-shaped lower surface. Through this design, the scale pan can perform an arc-shaped swinging motion of a high-position virtual axis relative to the scale body, and the structure is simple and practical. At the same time, since the upper end surface of the friction wheel is lower than the highest surface of the arc-shaped groove, when the scale body and the scale pan are placed separately, the heavy objects above the scale body can only squeeze and collide with the upper plane of the scale body, and will not cause pressure damage to the weighing sensor.

[0007] Furthermore, the transmission mechanism is provided with four groups, which are respectively located at the four corners of the plate frame. In this way, the friction wheels of the four transmission mechanisms support the transmission scale pan, ensuring that the scale pan remains stable during the arc swing process.

[0008] Furthermore, an O-shaped rubber ring is sleeved on the outer surface of the friction wheel. In this way, the rubber ring is used to increase the friction between the friction wheel and the lower surface of the scale plate, ensuring that the scale plate can be driven by the friction wheel to swing.

[0009] Furthermore, the lower surface of the scale pan is provided with a plurality of slide grooves, and the slide grooves cooperate with the friction wheel. In this arrangement, the slide grooves cooperate with the friction wheel to limit the positioning, ensuring that the scale pan swings along a preset path when swinging in an arc shape.

[0010] Furthermore, four magnets are embedded in the lower surface of the scale pan, which are the first magnet, the second magnet, the third magnet and the fourth magnet from left to right; the first Hall sensor and the second Hall sensor are embedded in the left and right sides of the arc-shaped groove of the scale body, respectively, and the first Hall sensor and the second Hall sensor are electrically connected to the first motor; when the scale pan is in a flat state, the first magnet and the fourth magnet are aligned with the first Hall sensor and the second Hall sensor; when the scale pan swings in an arc shape to the preset highest point on the left, the second magnet is aligned with the first Hall sensor; when the scale pan swings in an arc shape to the preset highest point on the right, the third magnet is aligned with the second Hall sensor. In this way, in order to ensure that the scale pan can maintain a flat posture at the beginning and end of blood collection, and the swing amplitude is limited when the arc swings, so as to facilitate the blood collection work, magnets and Hall sensors are set. When the scale pan swings to the preset highest point on the left, that is, the first Hall sensor detects that the second magnet is aligned with it, then the first rotating motor is controlled to rotate in the opposite direction, so that the scale pan swings in the opposite direction to avoid the blood collection bag falling due to excessive swing amplitude. The same applies when the scale pan swings to the preset highest point on the right. When the amount of blood collected is sufficient and the scale plate needs to stop rocking, the first rotating motor continues to operate until the first Hall sensor and the second Hall sensor are aligned with the first magnet and the fourth magnet, so that the scale plate is in a flat state, which is convenient for the nurse to take out the blood collection bag and carry out subsequent blood collection work.

[0011] Furthermore, the scale body is also provided with a photosensitive hemostatic clamp; the photosensitive hemostatic clamp includes a slide seat, a knife and a limit plate are provided on the slide seat, the knife is slidably connected to the slide seat through a second drive device, and the second drive device is electrically connected to the weighing sensor; the limit plate is fixedly connected to the slide seat; the slide seat is also provided with a photosensitive sensor for detecting the passage of blood in the blood catheter, the photosensitive sensor is aligned between the knife and the limit plate, and the photosensitive sensor is electrically connected to the first drive device. With such a configuration, when blood is collected, the blood catheter is placed between the knife and the limit plate, and when the photosensitive sensor detects that red liquid (i.e., blood) passes through the blood catheter, the first drive device is controlled to swing the scale pan in an arc to ensure that the blood and anticoagulant in the blood collection bag are mixed in time. When the weighing sensor detects that the amount of blood collected meets the requirement, the second driving device is controlled to make the gate knife move along the slide seat toward the limit plate, and the gate knife and the limit plate are used to clamp the blood catheter to prevent the blood from continuing to flow into the blood collection bag, thereby avoiding too much or too little blood in the blood collection bag, which causes the anticoagulant to fail to play an effective anticoagulant role.

[0012] Furthermore, the second driving device includes a second rotary motor, the driving end of the second rotary motor is threadedly connected to the slide seat through a threaded rod, and the non-driving end of the second rotary motor is fixedly connected to the knife. In this arrangement, since the slide seat cannot rotate, when the second rotary motor drives the threaded rod to rotate the slide seat, the second rotary motor can only be driven to act in the opposite direction, that is, the knife moves closer to / away from the limit plate. The structure is simple and practical.

[0013] Furthermore, a white light LED is provided on the limit plate. This arrangement is to avoid the light source being insufficient in the workplace, which may cause the photosensitive sensor to be unable to move normally and identify the blood in the blood conduit. Therefore, a white light LED is provided to supplement the light source.

[0014] Furthermore, a base is fixed inside the scale body, and the slide seat is lockably slidably connected to the scale body along the base. In this way, when not in use, the slide seat can be slid along the base and stored inside the scale body to avoid collision and damage to the optical hemostatic clip during transportation.

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] The scale pan and the scale body are set as a split structure, which is different from the existing integrated structure. This product can be carried separately during transportation, which better protects the weighing sensor inside the scale body from being damaged by external forces. At the same time, the product can be designed to be more compact to free up more working space and reduce space occupancy.

[0017] Driven by the first drive device, the scale pan swings in an arc shape relative to the scale body with the high virtual axis as the axis. Different from the existing product in which the swing axis is arranged between the scale pan and the scale body, this product has a high virtual axis formed above the scale pan, so that the swing amplitude is larger, so that the blood is mixed with the anticoagulant in the blood collection bag more evenly, preventing the formation of blood clots. The blood is softer during the swinging process and the red blood cells are well protected, ensuring the effective use of the blood. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A three-dimensional diagram of this patent;

[0020] Figure 2 This is an exploded view of this patent;

[0021] Figure 3 A three-dimensional diagram of the weighing pan of this patent;

[0022] Figure 4 This is a schematic diagram of the structure of the weighing pan of this patent;

[0023] Figure 5 This is the second structural schematic diagram of the weighing pan of this patent;

[0024] Figure 6 A three-dimensional diagram of the optical hemostatic clip of the present patent;

[0025] Figure 7 This is a top view of the optical hemostatic clip of this patent;

[0026] The names of the components marked in the figure are as follows:

[0027] 1. Scale body; 101. Arc groove; 102. First Hall sensor; 103. Second Hall sensor; 2. Scale plate; 201. Slide; 202. First magnet; 203. Second magnet; 203. Third magnet; 204. Fourth magnet; 3. Weighing sensor; 4. First driving device; 401. Plate frame; 402. First rotating motor; 403. Friction wheel; 404. Rubber ring; 5. Photosensitive hemostatic clip; 501. Sliding seat; 502. Gate knife; 503. Limiting plate; 504. Photosensitive sensor; 505. White light LED; 6. Second driving device; 601. Second rotating motor; 602. Threaded rod; 7. Base; 8. Blood catheter DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0029] Examples and working principles:

[0030] A curved swinging blood sampling scale comprises a scale body 1 and a scale pan 2, wherein the scale pan 2 is arranged above the scale body 1; the scale body 1 and the scale pan 2 are of separable design, a weighing sensor 3 and a first driving device 4 are arranged inside the scale body 1, the first driving device 4 is arranged above the weighing sensor 3 and the weighing end of the weighing sensor 3 is connected to the first driving device 4, the driving end of the first driving device 4 extends to the outside of the scale body 1 and is transmission-connected to the scale pan 2; when driven by the first driving device 4, the scale pan 2 performs an curved swinging motion relative to the scale body 1 with a virtual axis as the axis core, and the virtual axis is located above the scale pan 2.

[0031] The scale pan 2 and the scale body 1 are set as a split structure, which is different from the existing integrated structure. This product can be carried separately during transportation, which better protects the weighing sensor 3 inside the scale body 1 from being damaged by external forces. At the same time, the product can be designed to be more compact to free up more working space and reduce space occupancy.

[0032] When in use, the blood collection bag is placed on the weighing pan 2. Under the driving action of the first driving device 4, the weighing pan 2 performs an arc-shaped swinging motion relative to the weighing body 1 with the high-position virtual axis as the axis. Different from the existing swinging axis arranged between the weighing pan 2 and the weighing body 1, the axis of this product is arranged above the weighing pan 2 to form a high-position virtual axis, so the swing amplitude is larger, so that the blood in the blood collection bag is mixed with the anticoagulant more evenly, preventing the formation of blood clots. The blood is softer during the swinging process and the red blood cells are well protected, ensuring the effective use of the blood.

[0033] The first driving device 4 includes a plate frame 401, and four transmission mechanisms are arranged on the plate frame 401, which are respectively located at the four corners of the plate frame 401. Each transmission mechanism includes a first rotating motor 402 and a friction wheel 403, and the driving end of the first rotating motor 402 is connected to the friction wheel 403; the four first rotating motors 402 rotate synchronously and in the same direction. The friction wheels 403 of the four transmission mechanisms support the transmission scale pan 2 to ensure that the scale pan 2 remains stable during the arc swing process. The upper surface of the scale body 1 is provided with an inwardly concave arc groove 101, and the lower surface of the scale pan 2 is designed to be an arc structure matched with the arc groove 101. The upper end surface of the friction wheel 403 extends out of the upper surface of the arc groove 101 and is in contact with the lower surface of the scale pan 2, and the upper end surface of the friction wheel 403 is lower than the highest surface of the arc groove 101. With such a configuration, when the scale pan 2 is placed in the arc groove 101 of the scale body 1 and supported on the friction wheel 403, the first rotating motor 402 drives the friction wheel 403 to rotate, and uses the friction transmission method to drive the scale pan 2 to perform an arc-shaped swinging motion along its own arc-shaped lower surface. This design enables the scale pan 2 to perform an arc-shaped swinging motion of a high-position virtual axis relative to the scale body 1, and the structure is simple and practical. At the same time, because the upper end surface of the friction wheel 403 is lower than the highest surface of the arc groove 101, when the scale body 1 and the scale pan 2 are placed separately, the heavy object located above the scale body 1 can only squeeze and collide with the upper plane of the scale body 1, and will not cause pressure damage to the weighing sensor 3.

[0034] The outer surface of the friction wheel 403 is sleeved with an O-shaped rubber ring 404. In this way, the rubber ring 404 is used to increase the friction force between the friction wheel 403 and the lower surface of the scale plate 2, ensuring that the scale plate 2 can be driven by the friction wheel 403 to swing.

[0035] The lower surface of the scale pan 2 is provided with a plurality of slide grooves 201, which cooperate with the friction wheel 403. In this arrangement, the slide grooves 201 cooperate with the friction wheel 403 to limit the positioning, ensuring that the scale pan 2 swings along a preset path when swinging in an arc shape.

[0036] Four magnets are embedded in the lower surface of the scale plate 2, which are the first magnet 202, the second magnet 203, the third magnet 203 and the fourth magnet 204 from left to right; the first Hall sensor 102 and the second Hall sensor 103 are embedded in the left and right sides of the arc groove 101 of the scale body 1, respectively, and the first Hall sensor 102 and the second Hall sensor 103 are both electrically connected to the first rotating motor 402; when the scale plate 2 is in a flat state, the first magnet 202 and the fourth magnet 204 are aligned with the first Hall sensor 102 and the second Hall sensor 103; when the scale plate 2 swings in an arc shape to the preset highest point on the left, the second magnet 203 is aligned with the first Hall sensor 102; when the scale plate 2 swings in an arc shape to the preset highest point on the right, the third magnet 203 is aligned with the second Hall sensor 103. In this way, in order to ensure that the scale plate 2 can maintain a flat posture at the beginning and end of blood sampling, and the swing amplitude is limited when swinging in an arc shape, so as to facilitate the blood sampling work, magnets and Hall sensors are set. When the weighing pan 2 swings to the preset highest point on the left side, that is, the first Hall sensor 102 detects that the second magnet 203 is aligned with it, the first rotating motor 402 is controlled to rotate in the opposite direction, so that the weighing pan 2 swings in the opposite direction to avoid the blood collection bag falling due to excessive swinging. The same is true when the weighing pan 2 swings to the preset highest point on the right side. When the blood collection volume is sufficient and the weighing pan 2 needs to stop swinging, the first rotating motor 402 continues to operate until the first Hall sensor 102 and the second Hall sensor 103 are aligned with the first magnet 202 and the fourth magnet 204, so that the weighing pan 2 is in a flat state, which is convenient for the nurse to take out the blood collection bag and carry out subsequent blood collection work.

[0037] The scale body 1 is also provided with a light-sensitive hemostatic clamp 5; the light-sensitive hemostatic clamp 5 includes a slide 501, on which a knife 502 and a limit plate 503 are provided, the knife 502 is slidably connected to the slide 501 through a second drive device 6, and the second drive device 6 is electrically connected to the weighing sensor 3; the limit plate 503 is fixedly connected to the slide 501; the slide 501 is also provided with a photosensitive sensor 504 for detecting the blood passing through the blood conduit 8, the photosensitive sensor 504 is aligned between the knife 502 and the limit plate 503, and the photosensitive sensor 504 is electrically connected to the first drive device 4. With such a configuration, when blood sampling is performed, the blood conduit 8 is placed between the knife 502 and the limit plate 503, and when the photosensitive sensor 504 detects that red liquid (i.e., blood) passes through the blood conduit 8, the first drive device 4 is controlled to swing the scale pan 2 in an arc shape to ensure that the blood in the blood sampling bag and the anticoagulant are mixed in time. When the weighing sensor 3 detects that the amount of blood collected meets the requirement, the second driving device 6 is controlled to make the gate knife 502 approach the limit plate 503 along the slide seat 501, and the gate knife 502 and the limit plate 503 are used to clamp the blood catheter 8 to prevent the blood from continuing to flow into the blood collection bag, thereby avoiding too much or too little blood in the blood collection bag, which causes the anticoagulant to fail to play an effective anticoagulant role.

[0038] The second driving device 6 includes a second rotating motor 601, the driving end of the second rotating motor 601 is threadedly connected to the slide 501 through a threaded rod 602, and the non-driving end of the second rotating motor 601 is fixedly connected to the knife 502. In this arrangement, since the slide 501 cannot rotate, when the second rotating motor 601 drives the threaded rod 602 to rotate with the slide 501, the second rotating motor 601 can only be driven to act in the opposite direction, that is, the knife 502 moves closer to / away from the limit plate 503. The structure is simple and practical. A white light LED 505 is provided on the limit plate 503. In this arrangement, in order to avoid insufficient light source in the workplace causing the photosensitive sensor 504 to fail to move normally and identify the blood in the blood conduit 8. Therefore, a white light LED 505 is provided to serve as a supplementary light source.

[0039] A base 7 is fixed inside the scale body 1, and the slide 501 can be locked and slidably connected with the scale body 1 along the base 7. In this way, when not in use, the slide 501 can be slid along the base 7 and stored inside the scale body 1 to avoid collision and damage to the optical hemostatic clip 5 during transportation.

Claims

1. An arc-shaped swinging blood sampling scale, comprising a scale body and a scale pan, wherein the scale pan is arranged above the scale body; characterized in that: The scale body and the scale pan are of separable design. A weighing sensor and a first driving device are arranged inside the scale body. The first driving device is arranged above the weighing sensor and the weighing end of the weighing sensor is connected to the first driving device. The driving end of the first driving device extends to the outside of the scale body and is connected to the scale pan in a transmission manner. When driven by the first driving device, the scale pan performs an arc-shaped swinging motion relative to the scale body with a virtual axis as the axis core, and the virtual axis is located above the scale pan. The first driving device includes a plate frame, and the plate frame is provided with a plurality of transmission mechanisms. The transmission mechanisms are provided with four groups, which are respectively located at the four corners of the plate frame. Each group of the transmission mechanisms includes a first rotating motor and a friction wheel, and the driving end of the first rotating motor is connected to the friction wheel. The upper surface of the scale body is provided with an inwardly concave arc groove. The lower surface of the scale pan is designed to be an arc structure matched with the arc groove. The upper end surface of the friction wheel extends out of the upper surface of the arc groove and is in contact with the lower surface of the scale pan, and the upper end surface of the friction wheel is lower than the highest surface of the arc groove.

2. The arc-shaped swing-type blood sampling scale according to claim 1, characterized in that: The outer surface of the friction wheel is sleeved with an O-type rubber ring.

3. The arc-shaped swing-type blood sampling scale according to claim 1, characterized in that: The lower surface of the scale pan is provided with a plurality of slide grooves, and the slide grooves are matched with the friction wheels.

4. The arc-shaped swing-type blood sampling scale according to claim 1, characterized in that: Four magnets are embedded in the lower surface of the scale pan, which are the first magnet, the second magnet, the third magnet and the fourth magnet from left to right; the first Hall sensor and the second Hall sensor are embedded in the left and right sides of the arc-shaped groove of the scale body, respectively, and the first Hall sensor and the second Hall sensor are both electrically connected to the first rotating motor; when the scale pan is in a flat state, the first magnet and the fourth magnet are aligned with the first Hall sensor and the second Hall sensor; When the scale pan swings in an arc shape to a preset highest point on the left side, the second magnet is aligned with the first Hall sensor; When the scale pan swings in an arc shape to a preset highest point on the right side, the third magnet is aligned with the second Hall sensor.

5. The arc-shaped swing-type blood sampling scale according to claim 1, characterized in that: The scale body is also provided with a photosensitive hemostatic clamp; the photosensitive hemostatic clamp includes a slide seat, a knife and a limit plate are provided on the slide seat, the knife is slidably connected to the slide seat through a second drive device, and the second drive device is electrically connected to the weighing sensor; the limit plate is fixedly connected to the slide seat; the slide seat is also provided with a photosensitive sensor for detecting the passage of blood in the blood catheter, the photosensitive sensor is aligned between the knife and the limit plate, and the photosensitive sensor is electrically connected to the first drive device.

6. The arc-shaped swing-type blood sampling scale according to claim 5, characterized in that: The second driving device comprises a second rotating motor, a driving end of the second rotating motor is threadedly connected to the slide seat via a threaded rod, and a non-driving end of the second rotating motor is fixedly connected to the knife.

7. The arc-shaped swing-type blood sampling scale according to claim 5, characterized in that: The limiting plate is provided with a white light LED.

8. The arc-shaped swing-type blood sampling scale according to claim 5, characterized in that: A base is provided inside the scale body, and the slide seat is lockably and slidably connected with the scale body along the base.

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