Efficient variable-pressure blood sampling device suitable for plateau areas

Abstract

The invention discloses an efficient variable-pressure blood sampling device suitable for plateau regions, and relates to the technical field of vein blood sampling, the efficient variable-pressure blood sampling device comprises a base, a test tube supporting mechanism, a blood sampling needle mechanism and a piston column labor-saving drawing mechanism, the right side of the top of the base is provided with a mounting groove, and the test tube supporting mechanism is mounted on the rear side of the top of the base; a negative pressure blood sampling test tube is mounted on the test tube supporting mechanism; one end of the blood taking needle mechanism is inserted into the top of the negative pressure blood taking test tube, the blood taking needle mechanism is connected with the test tube negative pressure enhancing mechanism, and the test tube negative pressure enhancing mechanism is mounted in the mounting groove; and the labor-saving piston plunger drawing mechanism is mounted on the base at the front end of the mounting groove, and is connected with the front end of the test tube negative pressure enhancing mechanism. According to the efficient variable-pressure blood sampling device suitable for the plateau area, the negative pressure in the test tube body can be increased so as to adapt to patients with increased blood viscosity in the plateau area, and the blood sampling efficiency of venous blood can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of venous blood sampling, in particular to a high-efficiency variable-voltage blood sampling device suitable for plateau areas. Background Art

[0002] At present, with the continuous development of medicine, blood tests have become an indispensable part of clinical tests. Through blood tests, the specific conditions of patients can be detected, which can be quickly diagnosed by doctors.

[0003] When drawing blood from a vein, a blood collection needle is inserted into the vein, and the negative pressure in the blood collection tube draws the venous blood into the blood collection tube through the blood collection hose. However, in plateau areas, the oxygen is thin. In order to increase the oxygen content in the blood, the body stimulates red blood cell proliferation, resulting in increased blood viscosity. At this time, the originally constant negative pressure in the blood collection tube slows down the extraction of venous blood, affecting the efficiency of blood collection. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a high-efficiency variable pressure blood collection device suitable for plateau areas, which can increase the negative pressure in the test tube body to adapt to patients with increased blood viscosity in plateau areas, which is beneficial to improving the efficiency of venous blood collection and can effectively solve the problems in the background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a high-efficiency variable-pressure blood sampling device suitable for plateau areas, comprising a base, a plurality of brackets are longitudinally provided on the left side of the top of the base at equal distances, and a mounting groove is provided on the right side of the top of the base, and further comprising: A test tube support mechanism is installed on the top rear side of the base, and a negative pressure blood collection test tube is installed on the test tube support mechanism; A blood collection needle mechanism, one end of which is inserted into the top of a negative pressure blood collection test tube, and the blood collection needle mechanism is connected to a test tube negative pressure enhancement mechanism, and the test tube negative pressure enhancement mechanism is installed in the installation groove; The piston column labor-saving pulling mechanism is installed on the base at the front end of the installation groove, and the piston column labor-saving pulling mechanism is connected to the front end of the test tube negative pressure enhancement mechanism.

[0006] The base is fixed on the work desk, the mounting groove is used to install the test tube negative pressure enhancement mechanism, the bracket is used to support the bottom of the negative pressure blood collection test tube, and the test tube support mechanism is used to support the middle part of the negative pressure blood collection test tube, so that the negative pressure blood collection test tube is in a stable vertical state, and the blood collection needle mechanism pierces the patient's vein. The negative pressure in the negative pressure blood collection test tube introduces venous blood into the negative pressure blood collection test tube through the blood collection needle mechanism, completing the venous blood collection process under normal conditions. When the blood viscosity of patients in plateau areas increases due to lack of oxygen, the piston column labor-saving pulling mechanism is used to drive the test tube negative pressure enhancement mechanism to work, and the test tube negative pressure enhancement mechanism discharges the air in the negative pressure blood collection test tube to increase the negative pressure in the negative pressure blood collection test tube. At this time, the absolute pressure in the negative pressure blood collection test tube is reduced, and the extraction force for venous blood is increased, which can increase the extraction speed of viscous blood and improve the blood collection efficiency.

[0007] Furthermore, the test tube supporting mechanism includes a test tube limiting horizontal frame, a lifting adjustment seat is installed on the top rear side of the base through a horizontal frame height adjusting assembly, a disassembly slot is opened on the top front side of the lifting adjustment seat, a vertical positioning limiting column is installed in the disassembly slot, and a disassembly block is clamped in the disassembly slot, the limiting hole on the disassembly block is cooperated and connected with the positioning limiting column, the front side of the disassembly block is fixedly connected with a test tube limiting horizontal frame, the test tube limiting horizontal frame is located on the upper left side of the top of the base, and a test tube hole is opened on the test tube limiting horizontal frame at the position corresponding to the bracket. The horizontal frame height adjustment component is used to drive the lifting and adjusting seat to move up and down, thereby driving the test tube limiting horizontal frame to move up and down by disassembling the card block. The test tube limiting horizontal frame is used to support the middle part of the negative pressure blood collection test tube, so that the negative pressure blood collection test tube is in a stable vertical state. The change in the height of the test tube limiting horizontal frame can adapt to negative pressure blood collection test tubes of different heights. The disassembly slot and the positioning limit column cooperate to allow the disassembly card block and the lifting and adjusting seat to be quickly disassembled and assembled. After the negative pressure blood collection test tube on the test tube limiting horizontal frame is completed, the test tube limiting horizontal frame and the disassembly card block can be moved upward and disassembled from the lifting and adjusting seat, so that the test tube limiting horizontal frame and multiple negative pressure blood collection test tubes on the test tube limiting horizontal frame can be taken away together, which is convenient for transferring multiple negative pressure blood collection test tubes at one time, and nurses no longer need to take away the negative pressure blood collection test tubes one by one.

[0008] Furthermore, the negative pressure blood collection test tube includes a test tube body, the test tube hole on the test tube limiting horizontal frame is interspersed with the test tube body, the top of the test tube body is connected with the annular groove at the bottom of the rubber stopper, and the outer side of the rubber stopper is sleeved with a test tube cover, the top center of the rubber stopper is provided with a hemispherical groove, the bottom center of the hemispherical groove is provided with a guide groove, and the top of the test tube cover is provided with a circular groove corresponding to the top of the hemispherical groove. The protrusion in the middle of the rubber stopper is inserted into the inner side of the top of the test tube body, and the top of the test tube body is matched with the annular groove at the bottom of the rubber stopper, so that the rubber stopper can well seal the top of the test tube body. When the rubber stopper seals the top of the test tube body, the test tube body needs to be in a negative pressure state, so as to facilitate the use of negative pressure to guide venous blood into the test tube body, and the test tube cover fastens the rubber stopper to the outer side of the top of the test tube body.

[0009] Furthermore, the blood collection needle mechanism includes a limiting disc, the top center of the limiting disc is fixedly connected to the bottom end of the hand-held handle, a cannula is inserted in the middle of the limiting disc, the top of the cannula extends to the inside of the hand-held handle, and the cannula is located at the lower side of the limiting disc and is sleeved with a hemispherical rubber sealing plug, the cannula is divided into a blood drawing channel and a negative pressure drawing channel by a partition plate, the top of the blood drawing channel is connected to one end of the blood collection hose, and the other end of the blood collection hose is equipped with a blood collection needle, an air suction one-way valve is arranged on the side of the hand-held handle, the top of the negative pressure drawing channel is connected to one end of the air suction one-way valve, and the other end of the air suction one-way valve is arranged with an externally threaded connecting pipe.

[0010] When blood sampling is needed, first insert the blood collection needle into the patient's vein, then pinch the hand-held handle, align the bottom of the cannula with the guide groove at the center of the bottom of the hemispherical groove, press the hand-held handle down hard, and the bottom end of the cannula pierces the middle part of the rubber plug and extends into the interior of the test tube body. The setting of the guide groove is conducive to the cannula passing through the middle part of the rubber plug. When the cannula is inserted into place, the hemispherical rubber sealing plug cooperates with the hemispherical groove, and the hemispherical rubber sealing plug is conducive to sealing the gap between the cannula and the rubber plug to prevent external air from entering the test tube body through the gap between the cannula and the rubber plug and changing the negative pressure in the test tube body. The limiting disc and the circular groove also cooperate to keep the hand-held handle in a vertical state to prevent the cannula from tilting due to the traction of the blood collection hose and increasing the gap between the cannula and the rubber plug, and also help to maintain the negative pressure state in the test tube body. Due to the negative pressure state in the test tube body, the patient's venous blood enters the interior of the test tube body through the blood collection needle, the blood collection hose, and the blood drawing channel to complete the collection and extraction of venous blood.

[0011] The suction one-way valve only allows the air in the negative pressure extraction channel to be extracted, and does not allow external air to enter the test tube body through the negative pressure extraction channel.

[0012] When the patient's blood viscosity increases due to lack of oxygen in the plateau, the speed at which the viscous blood enters the test tube body through the blood collection needle, blood collection hose and blood drawing channel slows down. At this time, the test tube negative pressure enhancement mechanism is connected to the external threaded pipe on the suction one-way valve. The test tube negative pressure enhancement mechanism further extracts the air in the test tube body through the suction one-way valve and the negative pressure channel, thereby increasing the negative pressure in the test tube body, thereby increasing the force for drawing viscous blood and helping to improve the blood collection efficiency. Since the horizontal height of the bottom port of the blood drawing channel is lower than the horizontal height of the bottom port of the negative pressure channel, the blood passing through the bottom of the blood drawing channel will not enter the negative pressure channel, so that the blood entering the test tube body will not interfere with the negative pressure drawing work of the negative pressure channel on the test tube body.

[0013] Furthermore, the test tube negative pressure enhancement mechanism includes a negative pressure cylinder, a longitudinal negative pressure cylinder is installed in the installation groove, a piston is slidably installed in the negative pressure cylinder, the middle part of the piston is connected to the rear end of the piston column, the piston column is slidably connected to the middle part of the front end of the negative pressure cylinder, the front end side of the negative pressure cylinder is respectively provided with an exhaust port and an air intake port, an exhaust check valve is installed on the exhaust port, the air intake port is connected to one end of the trachea, the other end of the trachea is provided with an internal threaded sleeve, the internal threaded sleeve is threadedly connected to the external threaded pipe, and a connecting port is provided at the rear end of the negative pressure cylinder.

[0014] The exhaust one-way valve only allows the air at the front end of the negative pressure cylinder to be discharged through the exhaust port, and does not allow external air to enter the front end of the negative pressure cylinder through the exhaust port. The piston is pushed backward by the piston column, and the piston moves backward in the negative pressure cylinder, thereby increasing the negative pressure at the front end of the negative pressure cylinder, and the air in the test tube main body is extracted through the suction port, trachea, suction one-way valve and negative pressure extraction channel, thereby increasing the negative pressure in the test tube main body and enhancing the blood extraction force. The piston is pulled forward by the piston column, and the piston moves forward in the negative pressure cylinder. At this time, the presence of the suction one-way valve will not allow the air in the trachea to enter the test tube main body, and the air at the front end of the negative pressure cylinder is discharged through the exhaust one-way valve on the exhaust port. Repeated pushing and pulling of the piston column can allow the negative pressure in the test tube main body to continue to increase as needed. The setting of the connecting port allows the rear end of the negative pressure cylinder to remain connected with the outside.

[0015] Furthermore, the piston column effort-saving pulling and pulling mechanism includes a V-shaped pull rod, a movable frame is provided on the base at the front end of the mounting groove, the movable frame is movably connected to the bending part of the V-shaped pull rod through a movable shaft, the bottom of the V-shaped pull rod is connected to a horizontal sliding column, the two ends of the sliding column are respectively vertically slidably connected to two vertical rails, the rear sides of the bottoms of the two vertical rails are fixedly connected to a push-pull plate, the rear side of the push-pull plate is fixedly connected to the front end of the piston column, and a compression spring is sleeved on the outer peripheral side of the front end of the piston column.

[0016] The lever mechanism formed by the V-shaped lever and the movable shaft one makes it easier for the operator to pull the top of the V-shaped lever forward.

[0017] Furthermore, it also includes a pulling and pulling amplitude control mechanism, which includes a swing amplitude limit rod, a limit rod swing displacement assembly and a limit rod position locking assembly. A swing amplitude limit rod is installed on the base through the limit rod swing displacement assembly. The swing amplitude limit rod is located on the front side of the V-shaped pull rod, and the limit rod position locking assembly is installed on the limit rod swing displacement assembly. The limit rod swing shift assembly is used to change the position of the swing amplitude limit rod in front of the V-shaped pull rod. The limit rod position locking assembly locks the position of the swing amplitude limit rod. The setting of the swing amplitude limit rod can block the forward movement range of the top of the V-shaped pull rod, thereby preventing the top of the V-shaped pull rod from being moved forward too much, causing the test tube negative pressure enhancement mechanism to apply too much force to the negative pressure in the test tube body, thereby avoiding excessive blood being drawn into the test tube body. After setting the position of the swing amplitude limit rod according to the patient's blood viscosity requirements, medical staff only need to move the top of the V-shaped pull rod forward until the V-shaped pull rod is stopped by the interference of the swing amplitude limit rod, and there is no need to change the forward movement of the V-shaped pull rod based on experience.

[0018] The swing amplitude limit rod can also be moved backward to reduce the range of the V-shaped lever top moving forward, and then the number of times the V-shaped lever top moves forward can be controlled to control the degree of negative pressure in the test tube body.

[0019] Furthermore, the limit rod swing displacement assembly includes a swing rod, a support is installed at the top front end of the base, the support is movably connected to one end of the swing rod through a second movable shaft, the second movable shaft is arranged coaxially with the movable shaft, and a lateral swing amplitude limit rod is fixedly connected to the side of the swing rod. The swing rod moves relative to the second movable shaft to change the position of the swing amplitude limit rod in front of the V-shaped lever.

[0020] Furthermore, the limit rod position locking assembly includes an arc rail, the top front end of the base is fixedly connected to the arc rail, the center of the circle where the arc rail is located coincides with the axis of the movable shaft two, the swing amplitude limit rod passes through the track groove on the arc rail, the outer peripheral side of the arc rail is provided with an arc groove, and positioning grooves are arranged at equal angles in the arc groove, the end of the swing rod away from the movable shaft two is fixedly connected to a support plate, the support plate is slidably connected to a limit slide rod, the end of the limit slide rod close to the arc rail is fixedly connected to a positioning tooth, the positioning tooth extends into the arc groove and is engaged with the corresponding positioning groove, and the rod section of the limit slide rod between the positioning tooth and the support plate is sleeved with a compression spring two. The elastic force of the second compression spring pushes the positioning tooth to engage with the corresponding positioning groove. At this time, the rocker arm can no longer swing around the second movable shaft as the center, thereby completing the locking of the position of the swing amplitude limit rod. When the position of the swing amplitude limit rod needs to be adjusted, the limit slide bar is pulled by the pull ring, and the limit slide bar compresses the compression spring two with the help of the positioning tooth. The positioning tooth leaves the arc groove and disengages from the positioning groove, and the swing amplitude limit rod is driven to move to a suitable position through the rocker arm. Then the pull ring is released, and the elastic force of the second compression spring pushes the positioning tooth to engage with the corresponding positioning groove again, thereby completing the locking of the rocker arm position and also completing the locking of the swing amplitude limit rod after displacement.

[0021] Furthermore, it also includes a trachea protection mechanism, which includes a protective shell and a trachea retractable storage protection component. A protective shell is installed on the top right side of the base, and a trachea retractable storage protection component is installed in the protective shell, and the trachea retractable storage protection component is connected to the trachea. The protective shell can cover the installation slot, and the piston column labor-saving pulling mechanism and the pulling amplitude control mechanism are located on the outside of the front opening of the protective shell. Since the trachea needs to be used with the blood collection needle mechanism on different negative pressure blood collection test tubes, the trachea is set longer. If the longer trachea is not stored well, it will interfere with the use of the piston column labor-saving pulling mechanism, and the piston column labor-saving pulling mechanism will also damage the trachea. The trachea retractable storage protection component stores the trachea in the protective shell. When the trachea needs to be used, pulling it outward can make the trachea extend out of the protective shell, which can play a certain protective role on the trachea.

[0022] Compared with the prior art, the beneficial effects of the high-efficiency voltage-changing blood sampling device suitable for plateau areas are: 1. When the blood viscosity of patients in plateau areas increases due to lack of oxygen, the piston column labor-saving pulling mechanism is used to drive the test tube negative pressure enhancement mechanism to work. The test tube negative pressure enhancement mechanism discharges the air in the negative pressure blood collection test tube, increases the negative pressure in the negative pressure blood collection test tube, increases the force of drawing venous blood, and can increase the speed of drawing viscous blood.

[0023] 2. The limit rod swing shift assembly is used to change the position of the swing amplitude limit rod in front of the V-shaped lever. The limit rod position locking assembly locks the position of the swing amplitude limit rod. The setting of the swing amplitude limit rod can block the forward movement range of the top of the V-shaped lever, thereby preventing the top of the V-shaped lever from being moved forward too much, causing the test tube negative pressure enhancement mechanism to apply too much negative pressure to the test tube body, thereby preventing too much blood from being drawn into the test tube body. After the position of the swing amplitude limit rod is set according to the patient's blood viscosity, the medical staff only needs to move the top of the V-shaped lever forward until the V-shaped lever is stopped by the interference of the swing amplitude limit rod, and there is no need to change the forward movement range of the V-shaped lever based on the experience of the medical staff.

[0024] 3. It can increase the negative pressure inside the test tube to adapt to patients with increased blood viscosity in plateau areas, which is beneficial to improving the efficiency of venous blood collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of a high-efficiency voltage-variable blood sampling device applicable to plateau areas of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of the partially enlarged structure at center A; Figure 3 It is a schematic diagram of the side structure of the high-efficiency variable-pressure blood sampling device applicable to plateau areas of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the partially enlarged structure at B in the middle; Figure 5 It is a partial structural schematic diagram of the blood collection needle mechanism in the high-efficiency variable-pressure blood collection device applicable to plateau areas of the present invention; Figure 6 It is a partial cross-sectional structural schematic diagram of a blood collection needle mechanism in a high-efficiency variable-pressure blood collection device applicable to plateau areas of the present invention; Figure 7 It is a schematic diagram of the rear side partial cross-sectional structure of the high-efficiency variable-pressure blood sampling device applicable to plateau areas of the present invention; Figure 8 For the present invention Figure 7 A schematic diagram of the partially enlarged structure at C in the middle; Fig. 9 For the present invention Figure 7 The schematic diagram of the local enlarged structure at D in the middle; Fig.10 It is a structural schematic diagram of the test tube negative pressure enhancement mechanism and the piston column labor-saving pulling mechanism in the high-efficiency variable pressure blood sampling device applicable to plateau areas of the present invention; Fig.11 For the present invention Fig.10 Schematic diagram of the local cross-section structure; Fig.12This is a schematic diagram of the bottom structure of the high-efficiency variable-pressure blood sampling device applicable to plateau areas of the present invention; Fig.13 It is a schematic cross-sectional structure diagram of a negative pressure blood sampling tube of a high-efficiency variable pressure blood sampling device applicable to plateau areas of the present invention; Fig.14 For the present invention Fig.13 The schematic diagram of the local enlarged structure at E in the middle; In the figure: 1 base, 2 test tube support mechanism, 21 column 1, 22 lifting screw 1, 23 knob 1, 24 screw nut 1, 25 lifting adjustment seat, 26 disassembly slot, 27 positioning limit column, 28 disassembly block, 29 test tube limit horizontal frame, 3 negative pressure blood collection tube, 31 test tube body, 32 rubber plug, 33 hemispherical groove, 34 guide groove, 35 test tube cover, 36 round groove, 4 blood collection needle mechanism, 41 limit disc, 42 hemispherical rubber sealing plug, 43 hand handle, 44 plug tube, 45 blood collection hose, 46 blood collection needle, 47 partition plate, 48 suction check valve, 49 external thread pipe, 410 blood drawing channel, 411 negative pressure channel, 5 test tube negative pressure enhancement mechanism, 51 internal thread sleeve, 52 trachea, 53 cylinder frame, 54 negative pressure cylinder, 55 piston, 56 piston column, 57 exhaust port, 58 exhaust check valve, 59 suction port, 510 pipe joint, 511 connecting port, 6 piston column labor-saving pulling mechanism, 61 movable frame, 62 movable shaft 1, 63 V-shaped lever, 64 sliding column, 65 push-pull plate, 66 vertical rail, 67 compression spring one, 68 anti-slip part, 7 pulling and pulling amplitude control mechanism, 71 support, 72 movable shaft two, 73 rocker, 74 swing amplitude limit rod, 75 arc rail, 76 arc groove, 77 positioning groove, 78 support plate, 79 limit slide bar, 710 pull ring, 711 positioning tooth, 712 compression spring two, 8 trachea protection mechanism, 81 protection shell, 82 longitudinal slide groove, 83 sliding block, 84 wheel frame, 85 inner pull roller, 86 notch, 87 anti-wear roller, 88 tension spring, 89 spring seat, 9 table edge fixing mechanism, 91 convex plate, 92 column two, 93 splint, 94 lifting screw two, 95 screw nut two, 96 knob two, 97 splint groove, 10 installation groove, 11 suction cup. DETAILED DESCRIPTION

[0026] 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.

[0027] For example, see Figures 1 to 14The present embodiment provides a technical solution: a high-efficiency variable-pressure blood sampling device suitable for plateau areas, comprising a base 1, a plurality of brackets are longitudinally and equidistantly provided on the left side of the top of the base 1, and a mounting groove 10 is provided on the right side of the top of the base 1, and also comprises a test tube supporting mechanism 2, a blood collection needle mechanism 4 and a piston column labor-saving pulling mechanism 6.

[0028] The test tube supporting mechanism 2 is installed on the top rear side of the base 1 , and a negative pressure blood sampling test tube 3 is installed on the test tube supporting mechanism 2 .

[0029] The test tube supporting mechanism 2 includes a horizontal frame height adjustment component, a lifting adjustment seat 25, a disassembly slot 26, a positioning limit column 27, a disassembly block 28, and a test tube limiting horizontal frame 29. The lifting adjustment seat 25 is installed on the top rear side of the base 1 through the horizontal frame height adjustment component. The lifting adjustment seat 25 is provided with a disassembly slot 26 on the top front side. A vertical positioning limit column 27 is installed in the disassembly slot 26, and a disassembly block 28 is connected in the disassembly slot 26. The limiting hole on the disassembly block 28 is connected with the positioning limit column 27. The front side of the disassembly block 28 is fixedly connected with a test tube limiting horizontal frame 29. The test tube limiting horizontal frame 29 is located on the upper left side of the top of the base 1, and a test tube hole is provided on the test tube limiting horizontal frame 29 at the position corresponding to the bracket.

[0030] The horizontal frame height adjustment assembly includes a column 21, a lifting screw 22, a knob 23, and a screw nut 24. The top rear side of the base 1 is fixedly connected with a vertical column 21, and the column 21 is vertically slidably connected with the sliding hole on the lifting adjustment seat 25. The top rear side of the base 1 is also rotatably connected to the bottom end of the lifting screw 22 through a bearing. The lifting adjustment seat 25 is installed with a screw nut 24, which is matched and connected with the lifting screw 22, and the top of the lifting screw 22 is installed with a knob 23. With the help of the knob 23, the lifting screw 22 is rotated clockwise, and the threaded action of the lifting screw 22 and the screw nut 24 drives the lifting adjustment seat 25 to rise along the column 21. With the help of the knob 23, the lifting screw 22 is rotated counterclockwise, and the threaded action of the lifting screw 22 and the screw nut 24 drives the lifting adjustment seat 25 to descend along the column 21.

[0031] The horizontal frame height adjustment component is used to drive the lifting and adjusting seat 25 to move up and down, thereby driving the test tube limiting horizontal frame 29 to move up and down by removing the card block 28. The test tube limiting horizontal frame 29 is used to support the middle part of the negative pressure blood sampling test tube 3, so that the negative pressure blood sampling test tube 3 is in a stable vertical state. The change in the height of the test tube limiting horizontal frame 29 can adapt to the negative pressure blood sampling test tube 3 of different heights. The disassembly slot 26 and the positioning limit column 27 cooperate to allow the disassembly card block 28 and the lifting and adjusting seat 25 to be quickly disassembled and assembled. After the negative pressure blood sampling test tube 3 on the test tube limiting horizontal frame 29 is completed, the test tube limiting horizontal frame 29 and the disassembly card block 28 can be moved upward and disassembled from the lifting and adjusting seat 25, so that the test tube limiting horizontal frame 29 and the multiple negative pressure blood sampling test tubes 3 on the test tube limiting horizontal frame 29 can be taken away together, which is convenient for transferring multiple negative pressure blood sampling test tubes 3 at one time, and nurses no longer need to take away the negative pressure blood sampling test tubes 3 one by one.

[0032] The negative pressure blood collection test tube 3 includes a test tube body 31, a rubber stopper 32, a hemispherical groove 33, a guide groove 34, a test tube cover 35, and a circular groove 36. The test tube body 31 is inserted into the test tube hole on the test tube limiting cross frame 29, the top of the test tube body 31 is connected with the annular groove at the bottom of the rubber stopper 32, and the test tube cover 35 is sleeved on the outer side of the rubber stopper 32. The hemispherical groove 33 is opened at the center of the top of the rubber stopper 32, the guide groove 34 is opened at the center of the bottom of the hemispherical groove 33, and the top of the test tube cover 35 is opened with a circular groove 36 corresponding to the top of the hemispherical groove 33. The protrusion in the middle of the rubber stopper 32 is inserted into the inner side of the top of the test tube body 31, and the top of the test tube body 31 cooperates with the annular groove at the bottom of the rubber stopper 32, so that the rubber stopper 32 can well seal the top of the test tube body 31. When the rubber stopper 32 seals the top of the test tube body 31, it is necessary to keep the inside of the test tube body 31 in a negative pressure state, so as to facilitate the guidance of venous blood into the test tube body 31 with the help of negative pressure. The test tube cover 35 fastens the rubber stopper 32 to the outer side of the top of the test tube body 31.

[0033] The specific number of the brackets is five, so five negative pressure blood sampling tubes 3 are also provided.

[0034] One end of the blood collection needle mechanism 4 is inserted into the top of the negative pressure blood collection test tube 3 , and the blood collection needle mechanism 4 is connected to the test tube negative pressure enhancement mechanism 5 , and the test tube negative pressure enhancement mechanism 5 is installed in the installation groove 10 .

[0035] The blood collection needle mechanism 4 comprises a limiting disc 41, a hemispherical rubber sealing plug 42, a hand-held handle 43, a cannula 44, a blood collection hose 45, a blood collection needle 46, a partition plate 47, an air inhalation non-return valve 48, and an external threaded pipe 49. The top center of the limiting disc 41 is fixedly connected to the bottom end of the hand-held handle 43. The limiting disc 41 cooperates with the circular groove 36. The middle part of the limiting disc 41 is interspersed with a cannula 44. The top of the cannula 44 extends to the inside of the hand-held handle 43. The cannula 44 is located at the lower side of the limiting disc 41 and is sleeved with a hemispherical rubber sealing plug 42. The hemispherical rubber sealing plug 42 is provided on the cannula 44. The plug 42 cooperates with the hemispherical groove 33, and the inside of the cannula 44 is divided into a blood drawing channel 410 and a negative pressure drawing channel 411 by a partition plate 47. The horizontal height of the bottom port of the blood drawing channel 410 is lower than the horizontal height of the bottom port of the negative pressure drawing channel 411. The top of the blood drawing channel 410 is connected to one end of a blood sampling hose 45, and a blood sampling needle 46 is installed at the other end of the blood sampling hose 45. An air suction one-way valve 48 is arranged on the side of the hand-held handle 43, and the top of the negative pressure drawing channel 411 is connected to one end of the air suction one-way valve 48, and an external threaded pipe 49 is arranged at the other end of the air suction one-way valve 48.

[0036] When blood sampling is required, first insert the blood collection needle 46 into the patient's vein, then pinch the hand-held handle 43, align the bottom of the cannula 44 with the guide groove 34 at the bottom center of the hemispherical groove 33, and press the hand-held handle 43 downward. The bottom end of the cannula 44 pierces the middle of the rubber plug 32 and extends into the interior of the test tube body 31. The setting of the guide groove 34 is conducive to the cannula 44 passing through the middle of the rubber plug 32. When the cannula 44 is inserted into place, the hemispherical rubber sealing plug 42 cooperates with the hemispherical groove 33, and the hemispherical rubber sealing plug 42 is conducive to sealing the gap between the cannula 44 and the rubber plug 32 to prevent external air from penetrating the cannula 44. The gap between the tube 44 and the rubber stopper 32 enters the test tube body 31 and changes the negative pressure in the test tube body 31. The limiting disc 41 and the circular groove 36 also cooperate to keep the handle 43 in a vertical state, thereby preventing the cannula 44 from tilting due to the traction of the blood collection hose 45 and increasing the gap between the cannula 44 and the rubber stopper 32, and also helping to maintain the negative pressure state in the test tube body 31. Due to the negative pressure state in the test tube body 31, the patient's venous blood enters the interior of the test tube body 31 through the blood collection needle 46, the blood collection hose 45, and the blood drawing channel 410, completing the collection and extraction of venous blood.

[0037] The suction check valve 48 only allows the air in the negative pressure extraction channel 411 to be extracted, but does not allow external air to enter the test tube body 31 through the negative pressure extraction channel 411 .

[0038] When the patient's blood viscosity increases due to high altitude hypoxia, the speed at which the viscous blood enters the test tube body 31 through the blood collection needle 46, the blood collection hose 45 and the blood drawing channel 410 slows down. At this time, the test tube negative pressure enhancement mechanism 5 is connected to the external threaded pipe 49 on the suction one-way valve 48. The test tube negative pressure enhancement mechanism 5 further extracts the air in the test tube body 31 through the suction one-way valve 48 and the negative pressure channel 411, so that the negative pressure in the test tube body 31 increases, which can enhance the extraction force of viscous blood and help improve the blood collection efficiency. Since the horizontal height of the bottom port of the blood drawing channel 410 is lower than the horizontal height of the bottom port of the negative pressure channel 411, the blood passing through the bottom of the blood drawing channel 410 will not enter the negative pressure channel 411, so that the blood entering the test tube body 31 will not interfere with the negative pressure drawing work of the negative pressure channel 411 on the test tube body 31.

[0039] The test tube negative pressure enhancement mechanism 5 includes an internal threaded sleeve 51, an air pipe 52, a cylinder frame 53, a negative pressure cylinder 54, a piston 55, a piston column 56, an exhaust port 57, an exhaust check valve 58, an air intake port 59, a pipe joint 510, and a connecting port 511. A longitudinal negative pressure cylinder 54 is installed in the installation groove 10 through the cylinder frame 53, and a piston 55 is slidably installed in the negative pressure cylinder 54. The middle part of the piston 55 is connected to the rear end of the piston column 56, and the piston column 56 is connected to the front of the negative pressure cylinder 54. The middle part of the end is slidingly connected, and a seal needs to be set between the piston column 56 and the front end of the negative pressure cylinder 54. The front end side of the negative pressure cylinder 54 is respectively provided with an exhaust port 57 and an air intake port 59. The exhaust port 57 is installed with an exhaust check valve 58. The air intake port 59 is connected to one end of the air pipe 52 through a pipe joint 510. The other end of the air pipe 52 is installed with an internal threaded sleeve 51, and the internal threaded sleeve 51 is threadedly connected to the external threaded pipe 49. The rear end of the negative pressure cylinder 54 is provided with a connecting port 511.

[0040] The exhaust check valve 58 only allows the air at the front end of the negative pressure cylinder 54 to be discharged through the exhaust port 57, and does not allow the external air to enter the front end of the negative pressure cylinder 54 through the exhaust port 57. The piston 55 is pushed backward by the piston rod 56, and the piston 55 moves backward in the negative pressure cylinder 54, thereby increasing the negative pressure at the front end of the negative pressure cylinder 54, and the air in the test tube body 31 is sucked out through the suction port 59, the air pipe 52, the suction check valve 48 and the negative pressure extraction channel 411, thereby increasing the negative pressure in the test tube body 31. The force for extracting blood is increased, and the piston 55 is pulled forward by the piston rod 56. The piston 55 moves forward in the negative pressure cylinder 54. At this time, the existence of the suction one-way valve 48 will not allow the air in the trachea 52 to enter the test tube body 31. The air at the front end of the negative pressure cylinder 54 is discharged through the exhaust one-way valve 58 on the exhaust port 57. Repeated pushing and pulling of the piston rod 56 can allow the negative pressure in the test tube body 31 to continue to increase as needed. The setting of the connecting port 511 allows the rear end of the negative pressure cylinder 54 to maintain communication with the outside.

[0041] The piston column labor-saving pulling mechanism 6 is installed on the base 1 at a position at the front end of the installation groove 10 , and the piston column labor-saving pulling mechanism 6 is connected to the front end of the test tube negative pressure enhancement mechanism 5 .

[0042] The piston column labor-saving pulling and pulling mechanism 6 includes a movable frame 61, a movable shaft 62, a V-shaped lever 63, a sliding column 64, a push-pull plate 65, a vertical rail 66, a compression spring 67, and an anti-slip portion 68. A movable frame 61 is arranged on the base 1 at the front end of the mounting groove 10. The movable frame 61 is movably connected to the bending part of the V-shaped lever 63 through a movable shaft 62. The bottom of the V-shaped lever 63 is connected to a horizontal sliding column 64. The two ends of the sliding column 64 are respectively connected to the two vertical rails 66 for vertical sliding. The rear sides of the bottoms of the two vertical rails 66 are fixedly connected to the push-pull plate 65. The rear side of the push-pull plate 65 is fixedly connected to the front end of the piston column 56. A compression spring 67 is sleeved on the outer peripheral side of the front end of the piston column 56. The top of the V-shaped lever 63 is bent backward to form an anti-slip portion 68.

[0043] The anti-dropout portion 68 formed by the backward bending of the top of the V-shaped lever 63 allows the operator to better hold the top of the V-shaped lever 63 to prevent the operator from accidentally dropping the lever when the V-shaped lever 63 is pulled forward. The anti-dropout portion 68 at the top of the V-shaped lever 63 is held and pulled forward, and the bottom of the V-shaped lever 63 rotates backward with the movable shaft 1 62 as the center. When the slide column 64 moves with the bottom of the V-shaped lever 63, the slide column 64 slides upward along the vertical rail 66, and the slide column 64 pushes the vertical rail 66 to move backward, thereby the vertical rail 66 pushes the piston column 5 backward through the push-pull plate 65. 6. When the piston column 56 moves backward, the push-pull plate 65 compresses the compression spring 67. When the V-shaped lever 63 is released, the compression spring 67 returns to its original position and rebounds to extend, so that the piston column 56 can be pulled forward with the help of the push-pull plate 65. Thus, the piston column 56 can be pushed and pulled. The length of the V-shaped lever 63 above the movable shaft 62 is greater than the length of the V-shaped lever 63 below the movable shaft 62. The lever mechanism formed by the V-shaped lever 63 and the movable shaft 62 allows the operator to save effort when pulling the top of the V-shaped lever 63 forward.

[0044] The base 1 is fixed on the work desk, the mounting groove 10 is used to install the test tube negative pressure enhancement mechanism 5, the bracket is used to support the bottom of the negative pressure blood collection test tube 3, and the test tube support mechanism 2 is used to support the middle part of the negative pressure blood collection test tube 3, so that the negative pressure blood collection test tube 3 is in a stable vertical state, and the blood collection needle mechanism 4 pierces the patient's vein. The negative pressure in the negative pressure blood collection test tube 3 introduces the venous blood into the negative pressure blood collection test tube 3 through the blood collection needle mechanism 4, completing the venous blood collection process under normal conditions. When the blood viscosity of patients in plateau areas increases due to hypoxia, the piston column labor-saving pulling mechanism 6 is used to drive the test tube negative pressure enhancement mechanism 5 to work. The test tube negative pressure enhancement mechanism 5 discharges the air in the negative pressure blood collection test tube 3, so that the negative pressure in the negative pressure blood collection test tube 3 increases. At this time, the absolute pressure in the negative pressure blood collection test tube 3 is reduced, and the extraction force for venous blood is increased, which can increase the extraction speed of viscous blood and improve the blood collection efficiency.

[0045] For example 2, please refer to Figures 1 to 14 This embodiment provides a technical solution: a high-efficiency variable-voltage blood sampling device suitable for plateau areas. The structure of this embodiment is roughly the same as that of the first embodiment, except that: It also includes a pulling and pulling amplitude control mechanism 7, which includes a swing amplitude limit rod 74, a limit rod swing displacement assembly and a limit rod position locking assembly. The swing amplitude limit rod 74 is installed on the base 1 through the limit rod swing displacement assembly. The swing amplitude limit rod 74 is located on the front side of the V-shaped pull rod 63, and the limit rod position locking assembly is installed on the limit rod swing displacement assembly. The limit rod swing shift assembly is used to change the position of the swing amplitude limit rod 74 in front of the V-shaped lever 63. The limit rod position locking assembly locks the position of the swing amplitude limit rod 74. The setting of the swing amplitude limit rod 74 can block the forward movement range of the top of the V-shaped lever 63, thereby preventing the top of the V-shaped lever 63 from being moved forward too much, causing the test tube negative pressure enhancement mechanism 5 to apply too much force to the negative pressure in the test tube body 31, thereby preventing too much blood from being drawn into the test tube body 31. After setting the position of the swing amplitude limit rod 74 according to the patient's blood viscosity requirements, medical staff only need to move the top of the V-shaped lever 63 forward until the V-shaped lever 63 is stopped by the interference of the swing amplitude limit rod 74, and there is no need to change the forward movement of the V-shaped lever 63 based on experience.

[0046] The swing amplitude limiting rod 74 can also be moved backward to reduce the amplitude of the top of the V-shaped lever 63 moving forward, and then the number of times the top of the V-shaped lever 63 moves forward can be controlled to control the degree of negative pressure in the test tube body 31.

[0047] The limit rod swing displacement assembly includes a swing rod 73, a support 71 is installed at the top front end of the base 1, the support 71 is movably connected to one end of the swing rod 73 through the movable shaft 2 72, the movable shaft 2 72 is coaxially arranged with the movable shaft 1 62, and a lateral swing range limit rod 74 is fixedly connected to the side of the swing rod 73. The swing rod 73 moves relative to the movable shaft 2 72, and the position of the swing range limit rod 74 in front of the V-shaped lever 63 can be changed.

[0048] The limit rod position locking assembly includes an arc rail 75, an arc groove 76, a positioning groove 77, a support plate 78, a limit slide rod 79, a pull ring 710, a positioning tooth 711, and a compression spring 712. The top front end of the base 1 is fixedly connected with the arc rail 75. The center of the circle where the arc rail 75 is located coincides with the axis of the movable shaft 72. The swing amplitude limit rod 74 passes through the track groove on the arc rail 75. The outer peripheral side of the arc rail 75 is provided with an arc groove 76. A plurality of positioning grooves 77 are arranged at equal angles in the arc groove 76. The swing rod 73 is away from One end of the movable shaft 2 72 is fixedly connected to a support plate 78, and a limiting slide rod 79 is slidably connected to the support plate 78. The limiting slide rod 79 is distributed radially along the circle where the arc rail 75 is located. The end of the limiting slide rod 79 close to the arc rail 75 is fixedly connected to a positioning tooth 711. The positioning tooth 711 extends into the arc groove 76 and is engaged with the corresponding positioning groove 77. The rod section of the limiting slide rod 79 located between the positioning tooth 711 and the support plate 78 is sleeved with a compression spring 2 712, and the end of the limiting slide rod 79 away from the arc rail 75 is installed with a pull ring 710. When the locking cam 73 is in the state of being moved, the locking cam 73 is in the state of being moved forward and the locking cam 73 is in the state of being moved forward and the locking cam 73 is in the state of being moved backward and the locking cam 73 is in the state of being moved backward and the locking cam 73 is in the state of being moved backward and the locking cam 73 is in the state of being moved backward and the locking cam 73 is in the state of being moved backward and the locking cam 73 is in the state of being moved backward and the

[0049] For example 3, please refer to Figures 1 to 14 This embodiment provides a technical solution: a high-efficiency variable-voltage blood sampling device suitable for plateau areas. The structure of this embodiment is roughly the same as that of the second embodiment, except that: In order to protect the trachea 52, a trachea protection mechanism 8 is also provided. The trachea protection mechanism 8 includes a protective shell 81 and a trachea retractable storage protection component. The protective shell 81 is installed on the top right side of the base 1 by screws. The protective shell 81 covers the rear end of the mounting groove 10. An opening is provided at the front end of the protective shell 81, and a trachea retractable storage protection component is installed in the protective shell 81. The trachea retractable storage protection component is connected to the trachea 52.

[0050] The air pipe retracting storage protection component includes a longitudinal sliding groove 82, a sliding block 83, a wheel frame 84, an inner pull roller 85, a notch 86, an anti-wear roller 87, a tension spring 88, and a spring seat 89. The inner wall of the protective shell 81 is provided with a longitudinal sliding groove 82, and the longitudinal sliding groove 82 is slidably connected to the sliding block 83. The sliding block 83 is fixedly connected to the wheel frame 84, and the front end of the wheel frame 84 is rotatably connected to the inner pull roller 85. The rear end of the wheel frame 84 is connected to the front end of the tension spring 88, and the rear end of the tension spring 88 is connected to the rear end of the protective shell 81 through the spring seat 89. A notch 86 is provided at the top of the protective shell 81 corresponding to the air intake port 59, and the anti-wear roller 87 is rotatably installed at the rear end of the notch 86. The air pipe 52 bypasses the rear side of the inner pull roller 85 and the front side of the anti-wear roller 87 in turn. The pulling force of the stretch spring 88 pulls the wheel frame 84 backward, and the wheel frame 84 moves backward stably with the help of the longitudinal sliding groove 82 and the sliding block 83. The wheel frame 84 pulls the main part of the trachea 52 to the inside of the protective shell 81 through the inner pulling roller 85, so that most of the trachea 52 is in the protective shell 81. When the trachea 52 is needed, the trachea 52 is pulled outward to connect the internal threaded sleeve 51 at the end of the trachea 52 with the external threaded connecting pipe 49 in the blood collection needle mechanism 4. At this time, the stretch spring 88 is stretched, and the pulling force of the stretch spring 88 makes the trachea 52 straightened, preventing the trachea 52 from being scattered and affecting the operation of the piston column labor-saving pulling mechanism 6, and also preventing the piston column labor-saving pulling mechanism 6 from damaging the trachea 52.

[0051] The protective shell 81 can cover the installation groove 10, and the piston column effort-saving pulling mechanism 6 and the pulling amplitude control mechanism 7 are located on the outside of the front end opening of the protective shell 81. Since the trachea 52 needs to be used in conjunction with the blood collection needle mechanism 4 on different negative pressure blood collection tubes 3, the trachea 52 is arranged to be longer. If the longer trachea 52 is not properly stored, it will interfere with the use of the piston column effort-saving pulling mechanism 6, and the piston column effort-saving pulling mechanism 6 will also damage the trachea 52. The trachea retractable storage protection component stores the trachea 52 in the protective shell 81. When the trachea 52 needs to be used, pulling it outward can make the trachea 52 extend out of the protective shell 81, which can provide a certain degree of protection for the trachea 52.

[0052] For other embodiments, see Figure 3 , Figure 7 , Fig.12In order to make the base 1 stably fixed on the work desk and avoid the base 1 from shifting and tipping over when the piston column labor-saving pulling mechanism 6 is used, a table edge fixing mechanism 9 is provided. The table edge fixing mechanism 9 includes a convex plate 91, a second column 92, a clamping plate 93, a second lifting screw 94, a second screw nut 95, a second knob 96, and a clamping plate groove 97. The right side of the base 1 is fixedly connected with a convex plate 91, and a clamping plate 93 is provided below the convex plate 91. The left end of the clamping plate 93 extends to the bottom of the base 1. The front and rear ends of the top are fixedly connected to the bottom ends of two columns 92 respectively, and the two columns 92 are vertically slidably connected to the column holes on the convex plate 91 respectively. The middle part of the upper side of the clamping plate 93 is rotatably connected to the bottom end of the lifting screw 94 through a bearing. A screw nut 95 is installed in the middle part of the convex plate 91. The screw nut 95 is connected with the lifting screw 94, and a knob 96 is installed on the top of the lifting screw 94. A clamping plate groove 97 corresponding to the left end of the clamping plate 93 is opened on the right side of the bottom of the base 1.

[0053] By rotating the lifting screw 94 counterclockwise through the knob 96 , the threads of the lifting screw 94 and the screw nut 95 drive the clamping plate 93 to move downward along the direction of the column 92 .

[0054] When it is necessary to fix the base 1 to the edge of the work desktop with the help of the table edge fixing mechanism 9, the lifting screw 2 94 is turned clockwise through the knob 2 96, and the threaded action of the lifting screw 2 94 and the screw nut 2 95 drives the clamp 93 to move up along the direction of the column 2 92, and the clamp 93 is against the lower side of the edge of the work desktop to complete the fixation of the base 1. When the table edge fixing mechanism 9 cannot or is not needed, the lifting screw 2 94 is continuously turned clockwise to allow the left end of the clamp 93 to be located in the clamp groove 97. At this time, the lower side of the clamp 93 is flush with the lower side of the base 1, and the base 1 can be placed horizontally on the upper side of the work desktop without being affected by the clamp 93.

[0055] For other embodiments, see Fig.12 A suction cup 11 is also provided. When the base 1 needs to be placed in the middle of the work desk, it is far away from the edge of the work desk and the edge fixing mechanism 9 cannot be used. The base 1 can be fixed by adsorption of the suction cup 11. No less than four suction cup grooves are provided at the bottom of the base 1. The suction cup 11 is installed in the suction cup groove. The base 1 is stably placed on the work desk with the help of negative pressure adsorption of the suction cup 11.

[0056] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0057] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency variable-pressure blood sampling device suitable for plateau areas, comprising a base (1), a plurality of brackets are longitudinally provided on the left side of the top of the base (1) at equal distances, and a mounting groove (10) is provided on the right side of the top of the base (1), characterized in that: Also includes: A test tube support mechanism (2) is installed on the top rear side of the base (1), and a negative pressure blood collection test tube (3) is installed on the test tube support mechanism (2); A blood collection needle mechanism (4), one end of which is inserted into the top of the negative pressure blood collection test tube (3), and the blood collection needle mechanism (4) is connected to the test tube negative pressure enhancement mechanism (5), and the test tube negative pressure enhancement mechanism (5) is installed in the installation groove (10); The piston column effort-saving pulling mechanism (6) is installed on the base (1) at a position located at the front end of the installation groove (10), and the piston column effort-saving pulling mechanism (6) is connected to the front end of the test tube negative pressure enhancement mechanism (5).

2. The high-efficiency variable-pressure blood sampling device suitable for plateau areas according to claim 1 is characterized in that: The test tube support mechanism (2) comprises a test tube limiting horizontal frame (29); a lifting adjustment seat (25) is installed on the top rear side of the base (1) through a horizontal frame height adjustment assembly; a disassembly slot (26) is provided on the top front side of the lifting adjustment seat (25); a vertical positioning limiting column (27) is installed in the disassembly slot (26); a disassembly block (28) is clamped in the disassembly slot (26); a limiting hole on the disassembly block (28) is cooperatively connected with the positioning limiting column (27); a test tube limiting horizontal frame (29) is fixedly connected to the front side of the disassembly block (28); the test tube limiting horizontal frame (29) is located on the upper left side of the top of the base (1); and a test tube hole is provided on the test tube limiting horizontal frame (29) at a position corresponding to the bracket.

3. The high-efficiency variable-pressure blood sampling device suitable for plateau areas according to claim 2 is characterized in that: The negative pressure blood sampling test tube (3) comprises a test tube body (31), the test tube body (31) is inserted into the test tube hole on the test tube limiting horizontal frame (29), the top of the test tube body (31) is matched and connected with the annular groove at the bottom of the rubber stopper (32), and the outer side of the rubber stopper (32) is sleeved with a test tube cover (35), the top center of the rubber stopper (32) is provided with a hemispherical groove (33), the bottom center of the hemispherical groove is provided with a guide groove (34), and the top of the test tube cover (35) is provided with a circular groove (36) corresponding to the top of the hemispherical groove (33).

4. The high-efficiency variable-pressure blood sampling device suitable for plateau areas according to claim 3 is characterized in that: The blood collection needle mechanism (4) comprises a limiting disc (41), the top center of the limiting disc (41) is fixedly connected to the bottom end of the hand-held handle (43), a cannula (44) is inserted in the middle of the limiting disc (41), the top of the cannula (44) extends to the inside of the hand-held handle (43), and the cannula (44) is sleeved with a hemispherical rubber sealing plug (42) at a position below the limiting disc (41), and the cannula (44) is connected to the bottom of the limiting disc (41). 7) is divided into a blood drawing channel (410) and a negative pressure drawing channel (411), the top of the blood drawing channel (410) is connected to one end of a blood drawing hose (45), and a blood drawing needle (46) is installed at the other end of the blood drawing hose (45), an air suction check valve (48) is arranged on the side of the hand-held handle (43), the top of the negative pressure drawing channel (411) is connected to one end of the air suction check valve (48), and an external threaded connecting pipe (49) is arranged at the other end of the air suction check valve (48).

5. The high-efficiency voltage-variable blood sampling device suitable for plateau areas according to claim 4 is characterized in that: The test tube negative pressure enhancement mechanism (5) comprises a negative pressure cylinder (54), a longitudinal negative pressure cylinder (54) is installed in the installation groove (10), a piston (55) is slidably installed in the negative pressure cylinder (54), the middle part of the piston (55) is connected to the rear end of the piston column (56), the piston column (56) is slidably connected to the middle part of the front end of the negative pressure cylinder (54), the front end side of the negative pressure cylinder (54) is respectively provided with an exhaust port (57) and an air intake port (59), the exhaust port (57) is installed with an exhaust check valve (58), the air intake port (59) is connected to one end of the air pipe (52), the other end of the air pipe (52) is installed with an internal thread sleeve (51), the internal thread sleeve (51) is threadedly connected to the external thread pipe (49), and the rear end of the negative pressure cylinder (54) is provided with a connecting port (511).

6. The high-efficiency voltage-variable blood sampling device suitable for plateau areas according to claim 5 is characterized in that: The piston column effort-saving pulling mechanism (6) comprises a V-shaped lever (63). A movable frame (61) is arranged on the base (1) at a position located at the front end of the mounting groove (10). The movable frame (61) is movably connected to the bending part of the V-shaped lever (63) through a movable shaft (62). The bottom of the V-shaped lever (63) is connected to a horizontal sliding column (64). The two ends of the sliding column (64) are respectively connected to two vertical rails (66) in a vertical sliding manner. The rear sides of the bottoms of the two vertical rails (66) are fixedly connected to a push-pull plate (65). The rear side of the push-pull plate (65) is fixedly connected to the front end of the piston column (56). The outer peripheral side of the front end of the piston column (56) is sleeved with a compression spring (67).

7. The high-efficiency variable-pressure blood sampling device suitable for plateau areas according to claim 6 is characterized in that: It also comprises a pulling amplitude control mechanism (7), the pulling amplitude control mechanism (7) comprising a swing amplitude limiting rod (74), a limiting rod swing displacement assembly and a limiting rod position locking assembly, the swing amplitude limiting rod (74) being mounted on the base (1) via the limiting rod swing displacement assembly, the swing amplitude limiting rod (74) being located on the front side of the V-shaped pull rod (63), and the limiting rod position locking assembly being mounted on the limiting rod swing displacement assembly.

8. The high-efficiency voltage-variable blood sampling device suitable for plateau areas according to claim 7 is characterized in that: The limit rod swing displacement assembly comprises a swing rod (73), a support (71) is installed at the top front end of the base (1), the support (71) is movably connected to one end of the swing rod (73) through a second movable shaft (72), the second movable shaft (72) is coaxially arranged with the first movable shaft (62), and a lateral swing amplitude limit rod (74) is fixedly connected to the side of the swing rod (73).

9. The high-efficiency variable-pressure blood sampling device suitable for plateau areas according to claim 8, characterized in that: The limit rod position locking assembly comprises an arc rail (75), the top front end of the base (1) is fixedly connected to the arc rail (75), the center of the circle where the arc rail (75) is located coincides with the axis of the second movable shaft (72), the swing amplitude limit rod (74) passes through the track groove on the arc rail (75), the outer peripheral side of the arc rail (75) is provided with an arc groove (76), and the arc groove (76) is provided with positioning grooves (77) at equal angles, and the swing rod (73) is far One end of the movable shaft (72) is fixedly connected to a support plate (78), and a limiting slide bar (79) is slidably connected to the support plate (78). One end of the limiting slide bar (79) close to the arc rail (75) is fixedly connected to a positioning tooth (711), and the positioning tooth (711) extends into the arc groove (76) and is engaged with the corresponding positioning groove (77). The rod section of the limiting slide bar (79) located between the positioning tooth (711) and the support plate (78) is sleeved with a second compression spring (712).

10. The high-efficiency voltage-variable blood sampling device suitable for plateau areas according to claim 5, characterized in that: It also includes a trachea protection mechanism (8), which includes a protection shell (81) and a trachea retractable storage protection component. The protection shell (81) is installed on the top right side of the base (1), and the trachea retractable storage protection component is installed in the protection shell. The trachea retractable storage protection component is connected to the trachea (52).

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