Blood culture device for precise blood sampling

Abstract

The utility model relates to blood culture tool technical field, concretely is a kind of blood culture device for accurate blood sampling, including blood culture bottle, the outer surface of blood culture bottle is equipped with the spiral scale line of 360 degrees encircles setting, spiral scale line is continuously distributed along the axial direction of blood culture bottle spiral, realize the blood sampling amount of reading from the circumferential arbitrary angle of blood culture bottle, blood culture bottle is supported by adjustable angle blood sampling bracket, the bottom of blood sampling bracket is equipped with antiskid base, antiskid base is used to place in supporting surface and prevent sliding;The top of blood sampling bracket both sides is equipped with angle adjusting mechanism. In the blood culture device for accurate blood sampling, blood sampling bracket is connected with blood culture bottle by angle adjusting mechanism. Blood culture bottle surface is equipped with the spiral scale line of 360 degrees encircles, continuously distributed along the axial direction spiral, so that medical staff can clearly read blood sampling amount from the circumferential arbitrary angle of bottle body, completely get rid of the restriction of traditional unilateral / bilateral scale to observation angle.

Description

Technical Field

[0001] This utility model relates to the field of blood culture tools, and more specifically, to a blood culture device for precise blood collection. Background Technology

[0002] In clinical diagnosis, blood culture is an important method for detecting the presence of pathogenic microorganisms (such as bacteria and fungi) in the blood, and its results have key guiding significance for the diagnosis and treatment of infectious diseases. The accuracy of blood culture largely depends on the standardization of the blood collection process, among which precise control of the blood volume is one of the core links.

[0003] Currently, blood culture devices used in clinical practice have the following problems during blood collection: Difficulty in reading blood volume: Traditional blood culture bottles typically have graduations on one or both sides, allowing blood volume readings only at specific angles. In practice, patients may be in bed, semi-recumbent positions, or the blood collection environment may be space-constrained, making it difficult to keep the blood culture bottle upright. This makes it difficult for medical staff to clearly observe the graduations, easily leading to over- or under-collection of blood. Insufficient blood volume reduces detection sensitivity, while excessive blood volume may exceed the carrying capacity of the nutrient substrate inside the culture bottle, affecting microbial growth and ultimately resulting in inaccurate test results.

[0004] Unstable blood culture bottles: During blood collection, blood culture bottles need to be placed stably to prevent shaking or tipping, but existing devices lack dedicated fixing structures. Healthcare workers often have to hold the bottle with one hand and operate the blood collection equipment with the other, increasing the difficulty of operation; if the bottle accidentally slides or tipps over, it may lead to blood sample contamination, waste, or even occupational exposure risks.

[0005] Inconvenient angle adjustment: When the patient is in a special position (such as lying down or collecting blood from infants), it is difficult to keep the blood culture bottle upright, which not only affects the accuracy of the scale reading, but may also cause the blood collection bottle to tilt due to the non-level support surface. Utility Model Content

[0006] The purpose of this invention is to provide a blood culture device for precise blood collection, so as to solve the problems of difficulty in reading blood volume and unstable fixation of blood culture bottles mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides a blood culture device for precise blood collection, including a blood culture bottle. The outer surface of the blood culture bottle is provided with a 360-degree spiral scale line, which is continuously distributed in a spiral shape along the axial direction of the blood culture bottle, enabling the blood volume to be read from any angle around the circumference of the blood culture bottle. The blood culture bottle is supported by an adjustable blood collection bracket, and an anti-slip base is installed at the bottom of the blood collection bracket to place it on the support surface and prevent slippage. The blood collection bracket has a U-shaped structure, and angle adjustment mechanisms are installed on both sides of the top of the blood collection bracket. The angle adjustment mechanism includes an angle adjustment rod, the inner end of which slides through the side wall of the blood collection bracket and extends to the inner side, where it can engage with the side wall of the blood culture bottle.

[0008] This design features a 360-degree spiral scale on the blood culture bottle, continuously distributed along the axial direction. Utilizing the spatial continuity of the spiral structure, the scale covers the bottle's circumference without any blind spots, enabling blood volume readings at any angle. An adjustable U-shaped blood collection bracket engages with the bottle via angle adjustment rods on both sides. The U-shaped structure provides support for the bottle, and the angle adjustment rods can be extended, retracted, or rotated to change the bottle's tilt angle. An anti-slip base increases friction with the supporting surface, preventing the entire device from sliding.

[0009] Preferably, the spiral scale lines are in two sets, arranged in a double spiral.

[0010] This design features two sets of spiral graduation lines arranged in a double spiral pattern, forming a complementary graduation distribution on the bottle surface. The blind spots that may exist in a single spiral are covered by the other set, and the dense distribution of the double spirals improves the circumferential coverage of the graduations.

[0011] Preferably, a knob is installed at the outer end of the angle adjustment mechanism.

[0012] This setting knob is fixedly connected to the angle adjustment rod. By rotating the knob, the adjustment rod can be extended, retracted, or rotated to adjust the angle of the bottle; ensuring that it is in a vertical position (the alignment accuracy between the liquid level and the scale line is highest when it is vertical).

[0013] Preferably, the bottom of the anti-slip base is equipped with anti-slip teeth.

[0014] This feature features anti-slip teeth on the bottom of the anti-slip base. These teeth increase the contact friction with the support surface (such as a table or tray), especially for smooth surfaces. The toothed structure is embedded in the tiny gaps of the support surface, increasing the relative resistance to movement.

[0015] Preferably, the top opening of the blood culture bottle is provided with a collection connector for an external collection pipeline.

[0016] This setup uses a standardized interface design (such as a Luer connector) for the collection connector, which can be directly matched and connected to collection tubing such as blood collection needles and extension tubes to form a closed blood collection channel, preventing blood samples from coming into contact with the outside world.

[0017] Preferably, the top of both sides of the blood collection bracket is provided with a through shaft hole, the inner end of the angle adjustment rod slides through the shaft hole, and both sides of the top of the blood collection bracket are vertically provided with threaded holes that communicate with the corresponding shaft holes. A locking pin is threaded into the threaded hole, and the bottom end of the locking pin can lock and fix the angle adjustment rod.

[0018] This setting provides a moving track for the angle adjustment rod through the shaft hole, ensuring that the adjustment rod extends and retracts in a fixed direction; the locking pin is screwed into the threaded hole at the top of the shaft hole, and its bottom end presses against the angle adjustment rod, using friction to fix its position and prevent the angle from shifting due to external force after adjustment.

[0019] Preferably, the outer walls of both sides of the blood culture bottle near the corresponding angle adjustment rod are provided with cross positioning grooves, and the end of the angle adjustment rod is engaged with the cross positioning groove through a cross locking block.

[0020] This feature involves the interlocking of the cross-shaped positioning groove and the concave-convex structure of the cross-shaped locking block. The cross-shaped geometric constraint restricts the displacement of the bottle in the radial (left and right, front and back) and circumferential (rotational) directions, ensuring that the relative position of the bottle and the angle adjustment rod is fixed.

[0021] Preferably, the width of the anti-slip base is greater than the width of the blood collection tray.

[0022] This feature includes an anti-slip base that is wider than the blood collection tray. By increasing the support area, the height of the device's center of gravity is lowered (the wider the support surface, the greater the anti-tipping moment). According to the principle of mechanical stability, the support area is positively correlated with the anti-tipping ability.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows: This blood culture device for precise blood collection enables accurate reading of the blood volume, improving collection accuracy. The surface of the blood culture bottle features a 360-degree spiral scale (especially the double-helix design), continuously distributed in a spiral pattern along the axial direction. This allows medical personnel to clearly read the blood volume from any angle around the bottle, completely eliminating the limitations of traditional single / double-sided scales on the observation angle. Even in complex scenarios such as when the patient is bedridden or in a confined space, the blood volume can be accurately controlled without adjusting the bottle's orientation, avoiding over- or under-collection due to reading errors, ensuring the quality of the blood culture sample, and improving the reliability of the test results.

[0024] The blood collection bracket engages with the blood culture bottle via an angle adjustment mechanism. Combined with a knob and locking pin design, it allows for flexible adjustment of the bottle angle while maintaining a vertical position. Regardless of whether the supporting surface is horizontal (such as the edge of a hospital bed or a tilted operating table), the bottle is stably fixed through the angle adjustment rod, cross-shaped locking block, and cross-shaped positioning groove, ensuring the bottle does not wobble or tilt during blood collection. This design is particularly suitable for blood collection scenarios involving bedridden patients and infants, reducing operational difficulty and improving blood collection efficiency.

[0025] The anti-slip base (with anti-slip teeth and a width greater than the support width) installed at the bottom of the blood collection stand significantly increases the friction between the device and the supporting surface, effectively preventing the device from sliding or tipping over due to collisions or contact during blood collection. Simultaneously, the bottle is doubly secured by a U-shaped bracket and an angle adjustment mechanism, avoiding the risks of slippage and contamination that may occur when holding the bottle manually, reducing blood sample waste and occupational exposure hazards, and ensuring the safety of medical personnel during operation. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the blood collection bracket in this utility model; Figure 3 This is a schematic diagram of the blood culture bottle in this utility model; The meanings of the labels in the diagram are as follows: 1. Blood collection bracket; 11. Shaft hole; 2. Blood culture bottle; 21. Spiral graduation line; 22. Collection connector; 23. Cross positioning groove; 3. Angle adjustment mechanism; 31. Angle adjustment rod; 32. Knob; 33. Cross locking block; 34. Locking pin; 4. Anti-slip base; 41. Anti-slip teeth. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] This invention provides a blood culture device for precise blood collection, such as... Figure 1 , Figure 2As shown, the blood culture bottle 2 has a spiral scale line 21 arranged in a 360-degree circle on its outer surface. The spiral scale line 21 is continuously distributed in a spiral shape along the axial direction of the blood culture bottle 2, so that the blood volume can be read from any angle in the circumference of the blood culture bottle 2. The blood culture bottle 2 is supported by an adjustable angle blood collection bracket 1. The bottom of the blood collection bracket 1 is equipped with an anti-slip base 4, which is used to place on the support surface and prevent slippage. The blood collection bracket 1 has a U-shaped structure. An angle adjustment mechanism 3 is installed on both sides of the top of the blood collection bracket 1. The angle adjustment mechanism 3 includes an angle adjustment rod 31. The inner end of the angle adjustment rod 31 slides through the side wall of the blood collection bracket 1 and extends to the inner side, and can be engaged with the side wall of the blood culture bottle 2.

[0029] In use, the 360-degree spiral graduation lines 21 of the blood culture bottle 2 are continuously distributed in a spiral shape along the axial direction. Utilizing the spatial continuity of the spiral structure, the graduation lines cover the circumference of the bottle 2 without any blind spots, enabling blood volume reading at any angle. The adjustable U-shaped blood collection bracket 1 is engaged with both sides of the bottle 2 via angle adjustment rods 31 on both sides. The U-shaped structure supports the bottle 2, and the angle adjustment rods 31 can change the tilt angle of the bottle 2 by extension or rotation. The anti-slip base 4 increases the friction with the supporting surface to prevent the entire device from sliding. The above structure solves the problem that traditional single / double-sided graduations can only be read at specific angles, enabling accurate reading of blood volume at any circumferential angle and avoiding reading errors caused by body position or space limitations. The adjustable blood collection bracket 1 is adaptable to different blood collection scenarios, such as patients lying down or in a semi-recumbent position, ensuring the stability of the bottle 2. The anti-slip base 4 prevents the device from sliding, reducing the risk of the bottle 2 tipping over, sample contamination, or waste.

[0030] In this embodiment, as Figure 1 As shown, the spiral scale line 21 is arranged in two sets in a double spiral pattern.

[0031] In use, the two sets of spiral graduation lines 21 are arranged in a double spiral, forming a complementary graduation distribution on the surface of the bottle body 2. Any blind spots that might exist in a single spiral are covered by the other set, and the dense distribution of the double spirals improves the circumferential coverage of the graduations. This structural design further eliminates potential reading blind spots in a single spiral graduation line 21. No matter how the bottle body 2 is rotated or tilted, clear graduation lines can be quickly located, improving the convenience and accuracy of blood volume reading, and is especially suitable for scenarios with limited operating space.

[0032] Specifically, such as Figure 2 As shown, a knob 32 is installed on the outer end of the angle adjustment mechanism 3.

[0033] In use, the knob 32 of the angle adjustment mechanism 3 is fixedly connected to the angle adjustment rod 31. By rotating the knob 32, the adjustment rod 31 can be extended, retracted, or rotated, thereby adjusting the angle of the bottle 2. This ensures that the liquid level and the scale line 21 are aligned most accurately when the bottle is in a vertical position. This structural design simplifies the angle adjustment operation, allowing medical personnel to quickly and accurately adjust the bottle 2 to a vertical position using the knob 32, reducing the difficulty of operation. In the vertical position, the blood volume reading is more accurate, avoiding visual deviation of the liquid level caused by tilting, and improving the accuracy of blood collection.

[0034] Furthermore, such as Figure 1 As shown, the bottom of the anti-slip base 4 is equipped with anti-slip teeth 41.

[0035] In use, the anti-slip teeth 41 increase the contact friction with the supporting surface, such as a table or tray, especially on smooth surfaces. The toothed structure embeds itself into tiny gaps in the supporting surface, increasing relative resistance to movement. Compared to a flat anti-slip base, this structural design further enhances the device's anti-slip capability. Even if the device is touched during blood collection, it effectively prevents overall displacement, reduces the risk of the bottle 2 tipping over, and improves stability.

[0036] Furthermore, such as Figure 1 As shown, the top opening of the blood culture bottle 2 is provided with a collection connector 22 for connecting an external collection pipeline.

[0037] In use, the collection connector 22 adopts a standardized interface design, such as a Luer connector, which can be directly matched and connected to collection tubing such as blood collection needles and extension tubes to form a closed blood collection channel, preventing blood samples from coming into contact with the outside world. This structural design simplifies the blood collection process, eliminating the need for manual blood transfer and reducing operational steps; it also reduces the risk of sample contamination by avoiding exposure to air or the external environment, while reducing the possibility of occupational exposure such as needlestick injuries, thus improving operational safety.

[0038] Furthermore, such as Figure 2 As shown, the top of both sides of the blood collection bracket 1 is provided with through shaft holes 11. The inner end of the angle adjustment rod 31 slides through the shaft hole 11, and the end of the angle adjustment rod 31 can rotate in the shaft hole 11. Both sides of the top of the blood collection bracket 1 are vertically provided with threaded holes that communicate with the corresponding shaft holes 11. A locking pin 34 is threaded in the threaded hole, and the bottom end of the locking pin 34 locks and fixes the angle adjustment rod 31.

[0039] In use, the shaft hole 11 on the top side of the blood collection bracket 1 provides a moving track for the angle adjustment rod 31, ensuring that the adjustment rod 31 extends and retracts in a fixed direction. The bottom end of the locking pin 34 is screwed into the threaded hole at the top of the shaft hole 11, causing the bottom end of the locking pin 34 to press against the outer wall of the angle adjustment rod 31, using friction to fix its position and prevent angle deviation due to external force after adjustment. After angle adjustment, it can be stably fixed by the locking pin 34, avoiding accidental changes in the angle of the bottle 2 during blood collection and ensuring reading stability. The threaded locking method is simple to operate, facilitates angle adjustment at any time, and balances flexibility and stability.

[0040] Furthermore, such as Figure 3 As shown, both sides of the blood culture bottle 2 are provided with cross positioning grooves 23 near the outer walls of the corresponding angle adjustment rods 31. The inner end of the angle adjustment rod 31 is engaged with the cross positioning grooves 23 through a cross locking block 33.

[0041] In use, the cross-shaped positioning groove 23 on the outer wall of the blood culture bottle 2 and the cross-shaped locking block 33 at the inner end of the angle adjustment rod 31 form a concave-convex interlocking structure. This cross-shaped geometric constraint restricts the displacement of the bottle 2 in the radial left-right, front-back, and circumferential directions, ensuring that the relative position of the bottle 2 and the angle adjustment rod 31 is fixed. This structural design prevents loosening or wobbling between the bottle 2 and the adjustment rod 31, ensuring that the bottle 2 moves synchronously during angle adjustment and improving adjustment accuracy. The stable locking structure reduces accidental displacement of the bottle 2 during blood collection, further ensuring the accuracy of blood volume readings.

[0042] Furthermore, such as Figure 1 As shown, the width of the anti-slip base 4 is greater than the width of the blood collection tray 1.

[0043] In use, the width of the sliding base 4 is greater than that of the blood collection bracket 1. By increasing the support area, the height of the device's center of gravity is lowered. The wider the support surface, the greater the anti-tipping moment. According to the principle of mechanical stability, the support area is positively correlated with the anti-tipping ability. This structural design improves the overall anti-tipping ability of the device. Even if the blood collection bracket 1 is subjected to uneven force, such as being touched on one side, the wider base 4 can still provide sufficient support to prevent the device from tilting or tipping over, thus enhancing the safety of use.

[0044] When using the blood culture device for precise blood collection of this utility model, first place the anti-slip base 4 on a support surface such as a table or the edge of a hospital bed. The anti-slip teeth 41 at the bottom are embedded in the gap of the support surface, and the width of the base is greater than that of the blood collection bracket 1 to ensure overall stability and prevent tipping. The blood culture bottle 2 is placed inside the U-shaped blood collection bracket 1. The angle adjustment rods 31 on both sides are engaged with the side walls of the bottle 2. That is, the cross-shaped locking block 33 at the inner end of the angle adjustment rod 31 is embedded in the cross-shaped positioning groove 23 of the bottle 2, so as to initially fix the bottle and prevent radial or circumferential shaking.

[0045] Depending on the blood collection scenario, such as the patient being in a bed or semi-recumbent position, rotate the knob 32 at the outer end of the angle adjustment mechanism 3 to drive the angle adjustment rod 31 to extend or rotate along the shaft hole 11 at the top of the blood collection bracket 1, adjusting the blood culture bottle 2 to a vertical position, which can avoid reading errors caused by liquid tilting; after the angle adjustment is completed, tighten the locking pin 34 at the top of the shaft hole 11, so that its bottom end presses against the angle adjustment rod 31, and fixes the position of the adjustment rod through friction, ensuring that the bottle 2 maintains a stable angle during the blood collection process.

[0046] Connect the blood collection needle or collection tubing to the collection connector 22 on the top of the blood culture bottle 2 to form a closed blood collection channel and avoid sample contamination. During the blood collection process, medical staff can further eliminate blind spots through the double helix design of the 360-degree spiral scale line 21 on the outer surface of the bottle body 2, and read the blood collection volume from any circumferential angle without adjusting the orientation of the bottle body to accurately control the blood collection volume. If the support surface is slightly tilted or the device is touched during operation, the anti-slip base 4 and anti-slip teeth 41 can effectively prevent the device from sliding, and the locking cooperation between the cross block 33 and the cross positioning groove 23 can prevent the bottle body 2 from shaking and ensure stable reading.

[0047] Once the blood collection volume reaches the target value, disconnect the collection tubing from the collection connector 22 to complete the blood collection; loosen the locking pin 34, adjust the angle adjustment rod 31 using the knob 32 to reset, remove the blood culture bottle 2 for subsequent culture operations, and the device can be reused.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A blood culture device for precise blood collection, comprising a blood culture bottle (2), characterized in that: The outer surface of the blood culture bottle (2) is provided with a spiral scale line (21) arranged in a 360-degree circle. The spiral scale line (21) is continuously distributed in a spiral shape along the axial direction of the blood culture bottle (2), so that the blood volume can be read from any angle in the circumference of the blood culture bottle (2). The blood culture bottle (2) is supported by an adjustable angle blood collection bracket (1). The bottom of the blood collection bracket (1) is equipped with an anti-slip base (4). The anti-slip base (4) is used to place on the support surface and prevent sliding. The blood collection bracket (1) has a U-shaped structure. An angle adjustment mechanism (3) is installed on both sides of the top of the blood collection bracket (1). The angle adjustment mechanism (3) includes an angle adjustment rod (31). The inner end of the angle adjustment rod (31) slides through the side wall of the blood collection bracket (1) and extends to the inner side and can be engaged with the side wall of the blood culture bottle (2).

2. The blood culture device for precise blood collection according to claim 1, characterized in that: The spiral scale lines (21) are in two sets, arranged in a double spiral.

3. The blood culture device for precise blood collection according to claim 1, characterized in that: A knob (32) is installed at the outer end of the angle adjustment mechanism (3).

4. The blood culture device for precise blood collection according to claim 1, characterized in that: The bottom of the anti-slip base (4) is equipped with anti-slip teeth (41).

5. The blood culture device for precise blood collection according to claim 1, characterized in that: The top opening of the blood culture bottle (2) is provided with a collection connector (22) for connecting an external collection pipeline.

6. The blood culture device for precise blood collection according to claim 1, characterized in that: The top of both sides of the blood collection bracket (1) is provided with a through shaft hole (11). The inner end of the angle adjustment rod (31) slides through the shaft hole (11). The top two sides of the blood collection bracket (1) are vertically provided with threaded holes that communicate with the corresponding shaft holes (11). The threaded holes are threaded with locking pins (34). The bottom end of the locking pins (34) can lock and fix the angle adjustment rod (31).

7. The blood culture device for precise blood collection according to claim 1, characterized in that: Both sides of the blood culture bottle (2) are provided with cross positioning grooves (23) on the outer wall near the corresponding angle adjustment rod (31). The inner end of the angle adjustment rod (31) is engaged with the cross positioning groove (23) through a cross locking block (33).

8. The blood culture device for precise blood collection according to claim 1, characterized in that: The width of the anti-slip base (4) is greater than the width of the blood collection bracket (1).

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