Blood sampling device for testing

Abstract

The application relates to the field of medical devices, in particular to a blood sampling device for examination, which comprises a base, a blood sampling needle, a needle body fixing mechanism and a liquid medicine mixing mechanism, the blood sampling needle is provided with elastic wings, and a supporting body is fixed on the base; the needle body fixing mechanism comprises a guide rail, a sliding block, an extension connecting piece and a needle body fixing unit, the needle body fixing unit comprises a needle body fixing block and two needle body fixing parts, the needle body fixing block is connected with the sliding block through the extension connecting piece, each needle body fixing part comprises a vertical push rod and a horizontal push rod matched with the inclined surface, the elastic wings can press down and fix the blood sampling needle by abutting against the horizontal push rod; the liquid medicine mixing mechanism comprises a liquid medicine mixing plate and a locking unit, the liquid medicine mixing plate is provided with a main placing groove, and the liquid medicine mixing plate can rotate relative to the supporting body after the locking unit is unlocked. The technical scheme is adopted, so that the blood sampling needle is conveniently fixed, and the execution of the mixing action of the additive and the blood is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical devices, in particular to a blood sampling device for laboratory tests. BACKGROUND

[0002] In the current clinical blood sampling process, after the needle is inserted, the blood sampling needle or blood collection tube is usually fixed with adhesive tape, but it is quite troublesome. If the blood sampling needle or blood collection tube is not fixed after the needle is inserted, it may lead to needle withdrawal. In addition, after each blood collection, the blood collection tube needs to be inverted to ensure that the additive in the blood collection tube is fully mixed with the blood, preventing blood coagulation or hemolysis. For medical personnel, these operations should have become muscle memory, but due to lack of supervision, there is still room for improvement in terms of standardized operation. SUMMARY

[0003] The present application aims to provide a blood sampling device for laboratory tests, which improves the structure of the blood sampling needle and the matching blood sampling device to facilitate the fixation of the blood sampling needle and ensure the execution of the additive and blood mixing action.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a blood sampling device for laboratory tests, characterized by comprising a base, a blood sampling needle, a needle body fixing mechanism and a liquid agent mixing mechanism, the blood sampling needle comprising a needle head, the needle head being provided with an elastic fin, the base being provided with a hand placing groove, the base being fixed with a support body, the support body being L-shaped;

[0005] The needle body fixing mechanism comprises a guide rail, a sliding block, an extension connecting piece and a needle body fixing unit, the guide rail being fixedly connected with the support body, the sliding block being slidingly connected with the guide rail; the needle body fixing unit comprises a needle body fixing block in the shape of a roof and two needle body fixing portions, the needle body fixing block being connected with the sliding block through the extension connecting piece, each needle body fixing portion comprising a vertical push rod and a horizontal push rod slidingly arranged in the needle body fixing block and being in inclined surface cooperation, the elastic fin being able to abut against the horizontal push rod to push the sliding block through the vertical push rod, thereby driving the needle body fixing block to move downward and press the needle head of the blood sampling needle;

[0006] The liquid agent mixing mechanism comprises a liquid agent mixing plate and a locking unit, the liquid agent mixing plate being rotatably connected with the support body, the liquid agent mixing plate being provided with a main placing groove, the support body being provided with a lock hole; the locking unit comprises a half-sphere rod, a lock rod and an elastic member, the half-sphere rod and the lock rod being in inclined surface cooperation and being slidingly connected with the liquid agent mixing plate, the half-sphere rod being arranged at one end of the main placing groove, the half-sphere rod and the lock rod being separated, and the lock rod being inserted into the lock hole under the action of the elastic member.

[0007] The beneficial effects of this scheme are as follows: Before blood collection, after the medical staff places the blood collection tube into the main placement slot, they press the hemispherical rod at one end of the blood collection tube cap, which in turn drives the locking rod out of the lock hole and rotates the reagent mixing plate. This action helps the medical staff to confirm the patient information on the blood collection tube. After the patient places their arm into the hand placement slot, the medical staff rotates the reagent mixing plate to reset it. This facilitates the positioning of the arm through the reagent mixing plate, thereby adjusting the patient's arm posture. It also helps to shield the puncture point through the reagent mixing plate, reducing some patients' fear of blood or hemorrhage. Furthermore, it ensures the mixing of the additive with the blood, which will be discussed later.

[0008] During blood collection, medical staff pinch the middle of the elastic wings of the blood collection needle tip with their thumb and forefinger to close the elastic wings. Then, they move the slider and needle fixing unit to the approximate needle insertion position. After insertion, the elastic wings are gradually released so that the ends of the elastic wings abut against the horizontal push rod, and the horizontal push rod is moved. This causes the vertical push rod to push the slider and use the reaction force to move the needle fixing block down, thereby pressing down and fixing the blood collection needle tip. This replaces the action of applying tape separately after insertion, which is very convenient.

[0009] After blood collection is completed, medical staff place the blood collection tube into the main placement slot. As mentioned earlier, rotating the solution mixing plate makes it easier for the patient to remove their arm from the hand placement slot. The rotation of the solution mixing plate naturally inverts the blood collection tube, eliminating reliance on experience and ensuring that the additives in the blood collection tube are fully mixed with the blood.

[0010] In addition, since the blood collection tube cap itself has a hole, the blood collection tube pushes the hemispherical rod to move. When the hemispherical rod is opposite to the hole, the hemispherical rod moves a little distance in the opposite direction, which causes the locking rod to move a little distance and collide with the hemispherical rod. The resulting vibration is also beneficial to the mixing of additives and blood.

[0011] Furthermore, the needle fixing part also includes a docking plate and a spring. The docking plate is slidably disposed in the needle fixing block and fixedly connected to the horizontal push rod. The two ends of the spring are respectively connected to the needle fixing block and the docking plate.

[0012] Furthermore, the needle fixing mechanism also includes a ball, which is located at the center of the slider and the needle fixing block, and the slider and the needle fixing block are universally connected through the ball.

[0013] Furthermore, the guide rail has a square cross-section.

[0014] Furthermore, a support column is fixed on the base, and the support column is located at the diagonal position of the rotatable connection between the liquid mixing plate and the support body.

[0015] Furthermore, the liquid mixing plate is also equipped with several placement slots.

[0016] Furthermore, the slider includes an extension section, the lower surface of which is provided with a nozzle, and a dryer is provided around the nozzle; the support body is provided with a liquid storage chamber and a drying chamber, the liquid storage chamber is provided with a pump body, which is connected to the nozzle, and the drying chamber is provided with a fan, which is connected to the dryer. Attached Figure Description

[0017] Figure 1 This is a three-dimensional diagram from one perspective of the present invention;

[0018] Figure 2 This is a three-dimensional diagram from another perspective of the present invention;

[0019] Figure 3 for Figure 2 A 3D view of the needle fixing mechanism from a lower perspective;

[0020] Figure 4 A three-dimensional diagram of an elastic wing;

[0021] Figure 5 This is a sectional view of the needle fixing mechanism;

[0022] Figure 6 This is a cross-sectional view of the locking unit.

[0023] The following detailed description illustrates the specific implementation method:

[0024] The reference numerals in the accompanying drawings include: base 1, elastic wing 2, support body 3, support column 4, guide rail 5, slider 6, sphere 7, telescopic connector 8, needle fixing block 9, vertical push rod 10, horizontal push rod 11, docking plate 12, liquid mixing plate 13, main placement slot 14, key hole 15, hemispherical rod 16, locking rod 17, inclined groove 18, nozzle 19, and air dryer 20. Detailed Implementation

[0025] Example 1

[0026] Example 1 is basically as shown in the appendix. Figures 1-6 As shown, Figure 1 , 2 The illustrated blood collection device for testing includes a base 1, a blood collection needle, a needle body fixing mechanism, and a reagent mixing mechanism, such as... Figure 3 As shown, the blood collection needle includes a needle tip, and the needle tip is equipped with... Figure 4 The elastic wing 2 shown can be bonded, clamped, or solidified integrally with the needle tip; for example... Figure 1 As shown, the base 1 has a non-penetrating hand slot for placing the arm, and a support body 3 and a support column 4 are welded onto the base 1. The support body 3 is L-shaped.

[0027] The needle fixing mechanism includes a guide rail 5, a slider 6, a ball 7, a telescopic connector 8, and a needle fixing unit. The guide rail 5 has a square cross-section and is welded to the support body 3. The slider 6 is slidably connected to the guide rail 5. Figure 5 As shown, the needle fixing unit includes a U-shaped needle fixing block 9 and two needle fixing parts. The needle fixing block 9 is connected to the slider 6 through a telescopic connector 8. The telescopic connector 8 can be a tension spring or a similar corrugated tube after unfolding and flattening. The upper and lower sides of the telescopic connector 8 are respectively bonded to the slider 6 and the needle fixing block 9. When the telescopic connector 8 is in the contracted state, it can withstand the weight of the needle fixing unit below. The ball 7 is located at the center of the slider 6 and the needle fixing block 9, and the slider 6 and the needle fixing block 9 are universally connected through the ball 7.

[0028] Each needle fixing part includes a spring and a vertical push rod 10, a horizontal push rod 11, and a docking plate 12 slidably disposed within the needle fixing block 9. The vertical push rod 10 and the horizontal push rod 11 are engaged at an angle, and the docking plate 12 is welded to the horizontal push rod 11. The two ends of the spring are respectively welded to the needle fixing block 9 and the docking plate 12; Figure 3 As the elastic wing 2 shown naturally opens, it abuts against the docking plate 12. This allows the horizontal push rod 11 to drive the vertical push rod 10 upward, pushing the slider 6 and thus causing... Figure 5 The needle fixing block 9 shown moves down and presses down on the needle tip of the blood collection needle.

[0029] like Figure 1 , 6 As shown, the liquid mixing mechanism includes a liquid mixing plate 13 and a locking unit. The liquid mixing plate 13 is rotatably connected to the support body 3 via a hinge. The support column 4 is located diagonally opposite the rotatable connection between the liquid mixing plate 13 and the support body 3. The liquid mixing plate 13 is provided with a main placement slot 14 and several auxiliary placement slots. Figure 6 As shown, the support body 3 has a lock hole 15. The locking unit includes a hemispherical rod 16, a locking rod 17 and an elastic element. The locking rod 17 has an inclined groove 18. The hemispherical rod 16 and the locking rod 17 are inclined and are slidably connected to the liquid mixing plate 13. The elastic element is also a spring and is welded to the left end of the locking rod 17 and located between the locking rod 17 and the liquid mixing plate 13. The hemispherical rod 16 is a hemispherical rod structure and is located at one end of the main placement groove 14. After the hemispherical rod 16 and the locking rod 17 are separated, the locking rod 17 is inserted into the lock hole 15 under the action of the elastic element.

[0030] Example 2

[0031] In this embodiment, as Figure 3 As shown, the slider 6 includes an extension section, a nozzle 19 is mounted on the lower surface of the extension section, and a dryer 20 is mounted on the outer periphery of the nozzle 19; as Figure 1 , 2The support 3 shown has a liquid storage chamber and a drying chamber. The liquid storage chamber is equipped with a pump body, which is connected to the nozzle 19 through a pipe. The drying chamber is equipped with a fan, which is connected to the dryer 20 through a pipe. The switches for the pump body and the fan are located on the upper surface of the extension section. It can replace the use of cotton swabs to wipe disinfectant by spraying disinfectant and automatically drying it.

[0032] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A blood collection device for testing, characterized in that: It includes a base, a blood collection needle, a needle body fixing mechanism, and a liquid mixing mechanism. The blood collection needle includes a needle tip with elastic wings. The base has a hand groove and a support body fixed on the base. The support body is L-shaped. The needle fixing mechanism includes a guide rail, a slider, a telescopic connector, and a needle fixing unit. The guide rail is fixedly connected to the support body, and the slider is slidably connected to the guide rail. The needle fixing unit includes a U-shaped needle fixing block and two needle fixing parts. The needle fixing block is connected to the slider through the telescopic connector. Each needle fixing part includes a vertical push rod and a horizontal push rod that are slidably disposed in the needle fixing block and have an inclined surface fit. The needle fixing part also includes a docking plate that is slidably disposed in the needle fixing block and fixedly connected to the horizontal push rod. The elastic wing abuts against the docking plate and can push the slider through the vertical push rod, thereby driving the needle fixing block to move down and press down the needle tip of the blood collection needle. The liquid mixing mechanism includes a liquid mixing plate and a locking unit. The liquid mixing plate is rotatably connected to the support body. The liquid mixing plate is provided with a main placement groove, and the support body is provided with a locking hole. The locking unit includes a hemispherical rod, a locking rod, and an elastic element. The hemispherical rod and the locking rod are inclined and are both slidably connected to the liquid mixing plate. The hemispherical rod is located at one end of the main placement groove. After the hemispherical rod and the locking rod are separated, the locking rod is inserted into the locking hole under the action of the elastic element.

2. The blood collection device for testing according to claim 1, characterized in that: The needle fixing part also includes a spring, with both ends of the spring connected to the needle fixing block and the docking plate, respectively.

3. A blood collection device for testing according to claim 2, characterized in that: The needle fixing mechanism also includes a ball, which is located at the center of the slider and the needle fixing block, and the slider and the needle fixing block are universally connected through the ball.

4. A blood collection device for testing according to claim 3, characterized in that: The guide rail has a square cross-section.

5. A blood collection device for testing according to claim 4, characterized in that: A support column is also fixed on the base, and the support column is located at the diagonal position of the rotatable connection between the liquid mixing plate and the support body.

6. A blood collection device for testing according to claim 5, characterized in that: The liquid mixing plate is also equipped with several placement slots.

7. A blood collection device for testing according to claim 6, characterized in that: The slider includes an extension section, the lower surface of which is provided with a nozzle, and a dryer is provided around the nozzle; the support body is provided with a liquid storage chamber and a drying chamber, the liquid storage chamber is provided with a pump body, which is connected to the nozzle, and the drying chamber is provided with a fan, which is connected to the dryer.

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