Invasive blood pressure sensor blood sampling device capable of rapidly sampling blood

Abstract

The invention relates to the technical field of invasive blood pressure sensor blood sampling, and discloses an invasive blood pressure sensor blood sampling device capable of rapidly sampling blood, which comprises a blood sampling component, the blood sampling component comprises an injector, a piston is arranged in the injector, the surface of the piston is fixedly connected with a sealing gasket, and the sealing gasket is fixedly connected with a sealing sleeve. The surface of the piston is fixedly connected with a pull rod, the surface of the injector is communicated with a connecting pipe, the surface of the injector is fixedly connected with a limiting ring, the bottom of the limiting ring is fixedly connected with a circular groove elastic plate, and a blood conveying pipe is arranged in the circular groove elastic plate. The connecting blood vessel can be connected with the blood vessel of a patient, before blood sample collection, the handle is twisted to drive the cock to rotate, so that the connecting blood vessel can be communicated with the bent pipe, the bent pipe is communicated with the connecting pipe through the cock, and the piston and the sealing gasket are pushed by the pull rod to move in the syringe; the negative pressure generated by the piston can be transmitted into the connecting blood vessel through communication of the connecting tube and the bent tube so as to carry out blood sampling treatment on a patient.

Description

Technical Field

[0001] The present invention relates to the technical field of invasive blood pressure sensor blood sampling, in particular to an invasive blood pressure sensor blood sampling device capable of rapidly drawing blood. Background Art

[0002] Invasive blood pressure sensor blood sampling actually refers to invasive arterial blood pressure monitoring, which is a method of measuring blood pressure in real time and accurately by inserting a catheter directly into the artery and connecting the sensor to the monitoring device. Invasive blood pressure sensor blood sampling is invasive arterial blood pressure monitoring, which is an accurate and real-time blood pressure measurement method, especially suitable for critically ill patients and surgical patients who need accurate blood pressure monitoring; Currently, when sampling and drawing blood from patients, medical personnel are required to connect the blood pressure sensor blood sampling device to the patient's internal blood vessel. The current blood sampling method requires medical personnel to pull the blood sampling device to generate negative pressure, which can draw the patient's blood into the blood sampling device for sampling. The blood sampling device needs to be pushed slowly by the patient when in use. However, if the blood sampling device is used with a little more force, it will move too fast. Moving the blood sampling device too fast can easily cause discomfort to the patient during blood collection. Summary of the invention

[0003] The object of the present invention is to provide an invasive blood pressure sensor blood sampling device that can quickly draw blood, so as to solve the problems raised in the above-mentioned background technology.

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is an invasive blood pressure sensor blood sampling device capable of rapidly drawing blood, comprising a blood sampling component, wherein the blood sampling component comprises a syringe, a piston is arranged inside the syringe, a sealing gasket is fixedly connected to the surface of the piston, a pull rod is fixedly connected to the surface of the piston, a connecting tube is communicated with the surface of the syringe, a limiting ring is fixedly connected to the surface of the limiting ring, a circular groove spring plate is fixedly connected to the bottom of the limiting ring, a blood transmission tube is arranged inside the circular groove spring plate, a curved tube is arranged at the top of the blood transmission tube, a connecting blood vessel is arranged at one end of the curved tube away from the blood transmission tube, a three-way valve component is respectively arranged at one end of the connecting blood vessel and the curved tube close to each other and one end of the curved tube and the blood transmission tube close to each other, an adjusting component is arranged on the surface of the syringe, and a positioning component is arranged on the surface of the syringe.

[0005] Furthermore, the three-way valve component includes a valve body, the surface of the valve body is connected to a cylindrical tube, the inner wall of the valve body is rotatably connected to a plug, the surface of the plug is provided with a through hole, and the top of the plug is fixedly connected to a handle.

[0006] Furthermore, the surface of the sealing pad contacts the inner wall of the syringe, the end of the pull rod away from the piston extends to the outer end of the syringe, and the number of the circular groove spring plates is two, and the two circular groove spring plates are symmetrically arranged with the blood transfer tube as the center.

[0007] Furthermore, three cylindrical tubes are arranged on the surface of the valve body, and the three cylindrical tubes are arranged in a T-shape. Three through holes are opened on the surface of the cock, and the three through holes are adapted to the cylindrical tubes.

[0008] Furthermore, the end of the connecting blood vessel and the curved tube close to each other is sleeved on the surface of the cylindrical tube, the end of the curved tube and the blood transmission tube close to each other is sleeved on the surface of the cylindrical tube, and the end of the connecting tube away from the syringe is sleeved on the surface of the cylindrical tube.

[0009] Furthermore, the adjusting component includes a rotating ring, the inner wall of the rotating ring is rotatably connected to the surface of the syringe, the surface of the rotating ring is fixedly connected to a synchronization ring, the surface of the synchronization ring is fixedly connected to a grooved rubber ring, the surface of the rotating ring is fixedly connected to a telescopic frame, the end of the telescopic frame away from the rotating ring is fixedly connected to a screw hole rod, and the surface of the telescopic frame is fixedly connected to a spring.

[0010] Furthermore, one end of the telescopic frame away from the rotating ring extends to the outer end of the syringe, and the inner wall of the screw hole rod is threadedly connected to the surface of the pull rod.

[0011] Furthermore, the positioning component includes a grip rod, the bottom of which is fixedly connected to the top of the limiting ring, a rubber rod is fixedly connected to the surface of the grip rod, an end of the grip rod away from the limiting ring is fixedly connected to a fixing rod, the bottom of the fixing rod is fixedly connected to a cross rod, and a cross hole is provided at the end of the pull rod away from the piston.

[0012] Furthermore, one end of the gripping rod away from the limiting ring extends to above the syringe, one end of the fixing rod away from the gripping rod extends to the end center of the syringe, and the surface of the cross rod is slidably connected to the inner wall of the cross hole.

[0013] The present invention has the following beneficial effects: The connecting blood vessel of the present invention can be connected to the patient's blood vessel. Before blood sample collection, the handle is twisted to drive the stopcock to rotate, so that the connecting blood vessel can be connected to the curved pipe. The curved pipe is connected to the connecting pipe through the stopcock, and the piston and the sealing gasket are pushed to move inside the syringe through the pull rod. The negative pressure generated by the piston will be transmitted to the inside of the connecting blood vessel through the connection between the connecting pipe and the curved pipe to perform blood collection on the patient. Once the blood is drawn out, the handle is twisted to drive the stopcock to rotate, and the stopcock is rotated to a position parallel to the connecting blood vessel to close it. This can further ensure that the collected blood sample is from the patient rather than from a blood reservoir. The stopcock is rotated by twisting the handle to close the connecting pipe through the stopcock. At this time, the collected blood can be stored in the syringe to complete the sampling.

[0014] The present invention requires that when the pull rod is pushed to move toward the outer end of the syringe, the grooved rubber ring is pushed to rotate. When the grooved rubber ring rotates, it will drive the telescopic frame to rotate through the connection between the synchronous ring and the rotating ring. When the telescopic frame rotates, it will drive the screw hole rod to rotate. The screw hole rod and the pull rod are threadedly connected. When the screw hole rod rotates, it can push the pull rod to move toward the outer end of the syringe, and push the piston to generate negative pressure to collect the patient's blood sample. The threaded drive method can pull the pull rod to move according to the rotation speed of the screw hole rod, so as to avoid the pull rod moving too fast due to excessive force when moving, causing uncomfortable blood collection for the patient. Pushing the rotating ring to rotate can make the pull rod move slowly toward the outer end of the syringe, thereby improving the stability of the pull rod when moving.

[0015] The present invention provides a gripping rod on the top of the limiting ring, and medical staff can hold the syringe by the gripping rod when moving it, and the fixing rod fixes the cross rod by the gripping rod, and the surface of the cross rod contacts the inner wall of the cross hole in the pull rod, and the cross rod is used to limit it, thereby improving the stability of the pull rod when moving. When the syringe and the connecting tube, the bent tube and the connecting blood vessel need to be cleaned, the telescopic frame can be directly pulled to extend downward and retract inward, and the telescopic frame drives the pull rod and the piston to move inside the syringe through the screw hole rod when moving back and forth. The rapid movement of the piston inside the syringe can push the flushing liquid to flow inside the syringe and the connecting tube, the bent tube and the connecting blood vessel and flush the inside thereof.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the blood sampling component of the present invention; Figure 3 It is a schematic diagram of the overall structure of the three-way valve component of the present invention; Figure 4 It is a schematic diagram of the overall structure of the adjusting component of the present invention; Figure 5 Another structural schematic diagram of the adjusting component of the present invention; Figure 6 This is a schematic diagram of the overall structure of the positioning component of the present invention; Figure 7 For the present invention Figure 6 A magnified schematic diagram of part A in FIG.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows: In the figure: 1. blood sampling component; 2. three-way valve component; 3. adjustment component; 4. positioning component; 10. connecting blood vessel; 11. elbow; 12. piston; 13. limit ring; 14. pull rod; 15. syringe; 16. circular groove spring plate; 17. blood transmission tube; 18. sealing gasket; 19. connecting tube; 20. valve body; 21. cylindrical tube; 22. handle; 23. plug; 24. through hole; 30. synchronization ring; 31. rotating ring; 32. groove rubber ring; 33. telescopic frame; 34. screw hole rod; 35. shrapnel; 40. grip rod; 41. rubber rod; 42. fixing rod; 43. cross rod; 44. cross hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 are within the scope of protection of the present invention.

[0021] See also Figure 1-Figure 7As shown, the present invention is an invasive blood pressure sensor blood sampling device that can quickly draw blood, including a blood sampling component 1, the blood sampling component 1 includes a syringe 15, a piston 12 is arranged inside the syringe 15, a sealing gasket 18 is fixedly connected to the surface of the piston 12, a pull rod 14 is fixedly connected to the surface of the piston 12, a connecting tube 19 is connected to the surface of the syringe 15, a limiting ring 13 is fixedly connected to the surface of the limiting ring 13, a circular groove spring plate 16 is fixedly connected to the bottom of the limiting ring 13, a blood transmission tube 17 is arranged inside the circular groove spring plate 16, a curved tube 11 is arranged on the top of the blood transmission tube 17, a connecting blood vessel 10 is arranged at one end of the curved tube 11 away from the blood transmission tube 17, a three-way valve component 2 is respectively arranged at one end of the connecting blood vessel 10 and the curved tube 11 close to each other and one end of the curved tube 11 and the blood transmission tube 17 close to each other, an adjusting component 3 is arranged on the surface of the syringe 15, and a positioning component 4 is arranged on the surface of the syringe 15.

[0022] The three-way valve component 2 includes a valve body 20 , the surface of which is connected to a cylindrical tube 21 , the inner wall of the valve body 20 is rotatably connected to a plug 23 , the surface of the plug 23 is provided with a through hole 24 , and the top of the plug 23 is fixedly connected to a handle 22 .

[0023] The surface of the sealing pad 18 contacts the inner wall of the syringe 15. The connecting blood vessel 10 of the present invention can be connected to the patient's blood vessel. Before blood sample collection, the handle 22 is twisted to drive the stopcock 23 to rotate, so that the connecting blood vessel 10 can be connected to the curved tube 11. The curved tube 11 is connected to the connecting tube 19 through the stopcock 23. The piston 12 and the sealing pad 18 are pushed to move inside the syringe 15 through the pull rod 14. The negative pressure generated by the piston 12 is transmitted to the inside of the connecting blood vessel 10 through the connection between the connecting tube 19 and the curved tube 11 to perform blood sampling on the patient. Once the blood is drawn out, twist the handle 22 to drive the stopcock 23 to rotate, so that the connecting blood vessel 10 can be connected to the curved tube 11. The handle 22 drives the stopcock 23 to rotate, and the stopcock 23 rotates to a position parallel to the connected blood vessel 10 to close it, so as to further ensure that the collected blood sample comes from the patient rather than from the blood reservoir. The stopcock 23 is rotated by twisting the handle 22 to close the connecting tube 19 through the stopcock 23. At this time, the collected blood can be stored in the syringe 15 to complete the sampling. The end of the pull rod 14 away from the piston 12 extends to the outer end of the syringe 15. There are two circular groove spring plates 16, and the two circular groove spring plates 16 are symmetrically arranged with the blood transmission tube 17 as the center.

[0024] The surface of the valve body 20 is provided with three cylindrical tubes 21 , which are arranged in a T-shape. The surface of the cock 23 is provided with three through holes 24 , which are adapted to the cylindrical tubes 21 .

[0025] The end of the connecting blood vessel 10 and the curved tube 11 close to each other is sleeved on the surface of the cylindrical tube 21, the end of the curved tube 11 and the blood transmission tube 17 close to each other is sleeved on the surface of the cylindrical tube 21, and the end of the connecting tube 19 away from the syringe 15 is sleeved on the surface of the cylindrical tube 21.

[0026] The adjusting component 3 includes a rotating ring 31, the inner wall of the rotating ring 31 is rotatably connected to the surface of the syringe 15, the surface of the rotating ring 31 is fixedly connected to a synchronization ring 30, the surface of the synchronization ring 30 is fixedly connected to a grooved rubber ring 32, the surface of the rotating ring 31 is fixedly connected to a telescopic frame 33, the end of the telescopic frame 33 away from the rotating ring 31 is fixedly connected to a screw hole rod 34, and the surface of the telescopic frame 33 is fixedly connected to a spring piece 35.

[0027] The telescopic frame 33 extends to the outer end of the syringe 15 at one end away from the rotating ring 31. When the present invention needs to push the pull rod 14 to move toward the outer end of the syringe 15, the grooved rubber ring 32 is pushed to rotate. When the grooved rubber ring 32 rotates, it will drive the telescopic frame 33 to rotate through the connection between the synchronous ring 30 and the rotating ring 31. When the telescopic frame 33 rotates, it drives the screw hole rod 34 to rotate. The screw hole rod 34 and the pull rod 14 are threadedly connected. When the screw hole rod 34 rotates, it can push the pull rod 14 to move toward the outer end of the syringe 15, and push the piston 12 to generate negative pressure to collect the patient's blood sample. The threaded driving method can pull the pull rod 14 to move according to the rotation speed of the screw hole rod 34, so as to avoid the pull rod 14 from moving too fast due to excessive force, causing uncomfortable blood collection for the patient. Pushing the rotating ring 31 to rotate can make the pull rod 14 move slowly toward the outer end of the syringe 15, thereby improving the stability of the pull rod 14 when moving. The inner wall of the screw hole rod 34 is threadedly connected to the surface of the pull rod 14.

[0028] The positioning component 4 includes a grip rod 40, the bottom of which is fixedly connected to the top of the limiting ring 13, a rubber rod 41 is fixedly connected to the surface of the grip rod 40, an end of the grip rod 40 away from the limiting ring 13 is fixedly connected to a fixing rod 42, the bottom of the fixing rod 42 is fixedly connected to a cross rod 43, and a cross hole 44 is provided at the end of the pull rod 14 away from the piston 12.

[0029] The end of the gripping rod 40 away from the limiting ring 13 extends to the top of the syringe 15. The present invention is provided with a gripping rod 40 at the top of the limiting ring 13. The medical staff can hold the syringe 15 by the gripping rod 40 when moving it. The fixing rod 42 fixes the cross rod 43 through the gripping rod 40. The surface of the cross rod 43 contacts the inner wall of the cross hole 44 in the pull rod 14. The cross rod 43 is used to limit the pull rod 14, thereby improving the stability of the pull rod 14 when moving. The syringe 15 needs to be cleaned from the connecting tube 19, the curved tube 11 and the connecting blood vessel 10. During washing, the telescopic frame 33 can be directly pulled to extend downward and retract inward. When the telescopic frame 33 moves back and forth, it drives the pull rod 14 and the piston 12 to move inside the syringe 15 through the screw hole rod 34. The rapid movement of the piston 12 inside the syringe 15 can push the flushing liquid to flow inside the syringe 15 and the connecting tube 19, the curved tube 11 and the connecting blood vessel 10 and flush the inside thereof. The fixed rod 42 extends from one end of the grip rod 40 to the end center of the syringe 15, and the surface of the cross rod 43 is slidably connected to the inner wall of the cross hole 44.

[0030] When in use, the connecting blood vessel 10 can be connected to the patient's blood vessel. Before blood sample collection, the handle 22 is twisted to drive the stopcock 23 to rotate, so that the connecting blood vessel 10 can be connected to the curved tube 11. The curved tube 11 is connected to the connecting tube 19 through the stopcock 23. The piston 12 and the sealing gasket 18 are pushed to move inside the syringe 15 through the pull rod 14. The negative pressure generated by the piston 12 will be transmitted to the inside of the connecting blood vessel 10 through the connection between the connecting tube 19 and the curved tube 11 to collect blood from the patient. Once the blood is drawn out, the handle 22 is twisted to drive the stopcock 23 to rotate, and the stopcock 23 is rotated to a position parallel to the connecting blood vessel 10 to close it, which can further protect the blood vessel 10. In order to verify that the blood sample collected is from the patient rather than from the blood reservoir, the stopcock 23 is rotated by twisting the handle 22, and the connecting tube 19 is closed by the stopcock 23. At this time, the collected blood can be stored in the interior of the syringe 15 to complete the sampling. When the pull rod 14 needs to be pushed to move toward the outer end of the syringe 15, the grooved rubber ring 32 is pushed to rotate. When the grooved rubber ring 32 rotates, it drives the telescopic frame 33 to rotate through the connection between the synchronous ring 30 and the rotating ring 31. When the telescopic frame 33 rotates, it drives the screw hole rod 34 to rotate. The screw hole rod 34 is threadedly connected to the pull rod 14. When the screw hole rod 34 rotates, it can push the pull rod 14 to the outside of the syringe 15. The end of the syringe 15 moves, and the piston 12 is pushed to generate negative pressure to collect the patient's blood sample. The threaded drive method can pull the pull rod 14 to move through the rotation speed of the screw hole rod 34, so as to avoid the pull rod 14 from moving too fast due to excessive force, which makes the patient's blood collection uncomfortable. Pushing the rotating ring 31 to rotate can make the pull rod 14 move slowly toward the outer end of the syringe 15, and improve the stability of the pull rod 14 when moving. A grip rod 40 is provided on the top of the limit ring 13, and the medical staff can hold the syringe 15 through the grip rod 40 when moving it. The fixing rod 42 fixes the cross rod 43 through the grip rod 40. The surface of the cross rod 43 contacts the inner wall of the cross hole 44 in the pull rod 14, and the cross rod 43 is used to limit it, thereby improving the stability of the pull rod 14 when moving. When the syringe 15 and the connecting tube 19, the curved tube 11 and the connecting blood vessel 10 need to be cleaned, the telescopic frame 33 can be directly pulled to extend downward and retract inward. When the telescopic frame 33 moves back and forth, it drives the pull rod 14 and the piston 12 to move inside the syringe 15 through the screw hole rod 34. The rapid movement of the piston 12 inside the syringe 15 can push the flushing liquid to flow inside the syringe 15 and the connecting tube 19, the curved tube 11 and the connecting blood vessel 10 and flush the inside of them.

[0031] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An invasive blood pressure sensor blood sampling device capable of rapidly drawing blood, comprising a blood sampling component (1), characterized in that: The blood sampling component (1) comprises a syringe (15), a piston (12) is arranged inside the syringe (15), a sealing gasket (18) is fixedly connected to the surface of the piston (12), a pull rod (14) is fixedly connected to the surface of the piston (12), a connecting tube (19) is connected to the surface of the syringe (15), a limiting ring (13) is fixedly connected to the surface of the syringe (15), a circular groove spring plate (16) is fixedly connected to the bottom of the limiting ring (13), and the circular groove spring plate (16) is arranged inside A blood transmission tube (17) is provided, a curved tube (11) is arranged at the top of the blood transmission tube (17), a connecting blood vessel (10) is arranged at one end of the curved tube (11) away from the blood transmission tube (17), a three-way valve component (2) is arranged at one end of the connecting blood vessel (10) and the curved tube (11) close to each other and at one end of the curved tube (11) and the blood transmission tube (17) close to each other, respectively, an adjusting component (3) is arranged on the surface of the syringe (15), and a positioning component (4) is arranged on the surface of the syringe (15).

2. The invasive blood pressure sensor blood sampling device capable of rapid blood drawing according to claim 1, characterized in that: The three-way valve component (2) comprises a valve body (20), the surface of the valve body (20) is connected to a cylindrical tube (21), the inner wall of the valve body (20) is rotatably connected to a plug (23), the surface of the plug (23) is provided with a through hole (24), and the top of the plug (23) is fixedly connected to a handle (22).

3. The invasive blood pressure sensor blood sampling device capable of rapid blood drawing according to claim 2, characterized in that: The surface of the sealing gasket (18) contacts the inner wall of the syringe (15), and the end of the pull rod (14) away from the piston (12) extends to the outer end of the syringe (15). The number of the circular groove spring plates (16) is two, and the two circular groove spring plates (16) are symmetrically arranged with the blood transmission tube (17) as the center.

4. The invasive blood pressure sensor blood sampling device capable of rapid blood drawing according to claim 3, characterized in that: The surface of the valve body (20) is provided with three cylindrical tubes (21), the three cylindrical tubes (21) are arranged in a T-shape, and the surface of the stopcock (23) is provided with three through holes (24), the three through holes (24) and the cylindrical tubes (21) are adapted to each other.

5. The invasive blood pressure sensor blood sampling device capable of rapid blood drawing according to claim 4, characterized in that: The ends of the connecting blood vessel (10) and the curved tube (11) that are close to each other are sleeved on the surface of the cylindrical tube (21), the ends of the curved tube (11) and the blood transmission tube (17) that are close to each other are sleeved on the surface of the cylindrical tube (21), and the end of the connecting tube (19) that is away from the syringe (15) is sleeved on the surface of the cylindrical tube (21).

6. The invasive blood pressure sensor blood sampling device capable of rapid blood drawing according to claim 5, characterized in that: The adjusting component (3) comprises a rotating ring (31), the inner wall of the rotating ring (31) is rotatably connected to the surface of the syringe (15), the surface of the rotating ring (31) is fixedly connected to a synchronizing ring (30), the surface of the synchronizing ring (30) is fixedly connected to a grooved rubber ring (32), the surface of the rotating ring (31) is fixedly connected to a telescopic frame (33), one end of the telescopic frame (33) away from the rotating ring (31) is fixedly connected to a screw hole rod (34), and the surface of the telescopic frame (33) is fixedly connected to a spring sheet (35).

7. The invasive blood pressure sensor blood sampling device capable of rapid blood drawing according to claim 6, characterized in that: One end of the telescopic frame (33) away from the rotating ring (31) extends to the outer end of the syringe (15), and the inner wall of the screw hole rod (34) is threadedly connected to the surface of the pull rod (14).

8. The invasive blood pressure sensor blood sampling device capable of rapid blood drawing according to claim 7, characterized in that: The positioning component (4) comprises a gripping rod (40), the bottom of the gripping rod (40) is fixedly connected to the top of the limiting ring (13), a rubber rod (41) is fixedly connected to the surface of the gripping rod (40), an end of the gripping rod (40) away from the limiting ring (13) is fixedly connected to a fixing rod (42), the bottom of the fixing rod (42) is fixedly connected to a cross rod (43), and a cross hole (44) is formed at one end of the pull rod (14) away from the piston (12).

9. The invasive blood pressure sensor blood sampling device capable of rapid blood drawing according to claim 8, characterized in that: One end of the gripping rod (40) away from the limiting ring (13) extends to the top of the syringe (15), one end of the fixing rod (42) away from the gripping rod (40) extends to the end center of the syringe (15), and the surface of the cross rod (43) is slidably connected to the inner wall of the cross hole (44).

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