A medical sampler

Abstract

The present invention discloses a medical sampler, and relates to the technical field of medical devices. The present invention comprises a handheld shell, a hydraulic press is fixedly installed on the upper surface of the handheld shell, a hydraulic rod is fixedly installed on the output end of the hydraulic press, an L-shaped push rod is fixedly connected to the outer wall of the middle part of the hydraulic rod, an emptying piston is fixedly installed on the end of the L-shaped push rod away from the hydraulic rod, and a disposable sampling needle tube is threadedly installed on the front end of the handheld shell. The present invention makes the inside of the disposable sampling needle tube in a negative pressure state through the arrangement of the handheld shell, the hydraulic press, the hydraulic rod, the disposable sampling needle tube, the switch assembly, the L-shaped push rod, and the emptying piston. At this time, the disposable sampling needle tube is inserted into the sampled body. Due to the negative pressure, the accumulated fluid will be automatically extracted into the disposable sampling needle tube, and the accumulated fluid extraction process is stable and fast, which improves the efficiency and stability of the sampling work.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to a medical sampler. Background Art

[0002] A medical sampler is a medical device used to collect body fluid or tissue samples for laboratory testing or pathological diagnosis. It is usually composed of a sampler head, a tube body, an emptying piston, a protective cap and other parts. The sampler head can be selected according to different sampling sites and purposes, such as blood samplers, urine samplers, tissue samplers, etc. Disposable samplers are usually made of disposable materials and can be discarded after use, avoiding the risk of cross-infection caused by repeated use. At the same time, disposable samplers can also avoid sample contamination and quality degradation caused by incomplete disinfection. Disposable samplers have the advantages of ease of use, safety and hygiene, and reduced pollution. They are widely used in medical, laboratory and other fields.

[0003] The patent with the patent announcement number CN215534565U discloses an isolated medical endocrine sample extractor, including a sampling tube, a hole is provided at the top of the sampling tube, a push-pull rod is arranged inside the hole, a push-pull plate is fixedly connected to the bottom end of the push-pull rod, a sponge pad is fixedly connected to the bottom end of the push-pull plate, a discharge port is provided on one side of the sampling tube, a connecting pipe is arranged inside the discharge port, a sample tube is fixedly connected to the top end of the connecting pipe, a scale is arranged on the surface of the sampling tube, the scale is arranged in multiple groups, and a top plate is fixedly connected to the top end of the push-pull rod. The patent is provided with a sampling tube, a discharge port, a connecting pipe, a sample tube, a scale, a top plate and a connecting rod, which can effectively isolate the effusion, improve the isolation of the effusion, and the effusion is not easy to mix, which is relatively safe, and the extraction and transfer efficiency of multiple places is also fast, which reflects the practicality of the equipment.

[0004] However, the current medical sampler has the following problems: the medical sampler requires staff to manually extract the accumulated fluid, the extraction process is unstable and may be affected by external interference and affect the operation, and manual extraction also has the risk of reflux of the accumulated fluid. Therefore, we propose a medical sampler. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a medical sampler that solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a medical sampler includes a handheld shell, a hydraulic press is fixedly installed on the upper surface of the handheld shell, a hydraulic rod is fixedly installed on the output end of the hydraulic press, an L-shaped push rod is fixedly connected to the outer wall of the middle part of the hydraulic rod, an emptying piston is fixedly installed on the end of the L-shaped push rod away from the hydraulic rod, a disposable sampling needle tube is threadedly installed on the front end of the handheld shell, a switch assembly is fixedly installed on the lower outer wall of the handheld shell, an emptying bin is arranged inside the handheld shell, the emptying piston is slidably installed on the inner wall of the emptying bin of the handheld shell, the disposable sampling needle tube is installed at the front end of the handheld shell, the hydraulic press is started by the switch assembly, the hydraulic press drives the hydraulic rod to move backward, the hydraulic rod drives the L-shaped push rod to move backward, the L-shaped push rod drives the emptying piston to move backward, and the emptying piston will extract the air inside the disposable sampling needle tube due to the action of air pressure during the backward movement of the emptying piston.

[0007] The cam plate is fixedly mounted on the front end of the hydraulic press, and the cam block is fixedly mounted on the front end of the hydraulic press, and an anti-backflow swivel ring is rotatably mounted on the front end of the handheld shell, and a push rod is fixedly mounted on the outer wall of the anti-backflow swivel ring, and one end of the push rod is located away from the anti-backflow swivel ring on the movement track of the slide block, and the inner wall of the anti-backflow swivel ring is rotatably connected with a slide plate, and the slide plate is fixedly mounted on the front end of the handheld shell, and the surface of the slide plate is slidably connected with one side of several sealing sliders, and the other sides of several sealing sliders are slidably connected with the anti-backflow swivel ring. When the hydraulic rod moves backward, the hydraulic rod drives the slide block to move backward, the slide block will push the push rod and push the push rod to the right during the movement, and the push rod drives the anti-backflow swivel to rotate right. Since several sealing sliders are limited by the anti-backflow swivel ring and the slide plate at the same time, the anti-backflow swivel ring will drive several sealing sliders to retract inwards at the same time during the rotation, and when the hydraulic rod moves backward into place, several sealing sliders retract to close.

[0008] According to the above technical scheme, the handheld shell is provided with a disinfection device, which includes a disinfection water tank, an air bag, two atomizing nozzles, an air pipe, and two water pipes. The disinfection water tank is fixedly installed inside the handheld shell, and the air bag is fixedly installed on the top of the handheld shell. One end of the air pipe passes through and is fixedly connected to the outer wall of the air bag, and the other end of the air pipe passes through and is fixedly installed on the outer wall of the disinfection water tank. One end of the two water pipes passes through and is fixedly installed on both sides of the outer wall of the disinfection water tank, and the outer walls of the two water pipes are fixedly installed on both sides of the outer wall of the handheld shell. The two atomizing nozzles are respectively rotatably connected to the other ends of the two water pipes. When the sampling work is completed, the disposable sampling needle tube is removed, and the hydraulic press is closed by the switch assembly. The hydraulic press drives the hydraulic rod to move forward, and the hydraulic rod drives the L-shaped push rod to move forward. The L-shaped push rod will squeeze the air bag during the forward movement. The air bag transports the gas to the disinfection water tank through the air pipe. After the inside of the disinfection water tank is pressurized by gas, the disinfection water is transported to the two atomizing nozzles through the two water pipes.

[0009] According to the above technical scheme, the disinfection device also includes two rebounders, two L-shaped resistance rods, and two contact rods. The two L-shaped resistance rods are respectively fixedly installed on the inner walls of the two atomizing nozzles, one end of the two rebounders are fixedly installed on the front end of the handheld shell, and the other ends of the two rebounders are respectively fixedly connected to the outer walls of the two L-shaped resistance rods. The two contact rods are fixedly installed on the outer wall of the hydraulic rod. The two L-shaped resistance rods are respectively located on the movement trajectories of the two contact rods. When the hydraulic rod moves forward, the hydraulic rod drives the two contact rods to move forward. During the movement, the two contact rods will respectively contact the two L-shaped resistance rods and push the two L-shaped resistance rods forward. The two L-shaped resistance rods respectively drive the two atomizing nozzles to rotate. When the two contact rods do not contact the two L-shaped resistance rods, the two L-shaped resistance rods are respectively rebounded and reset through the two rebounders, and the two L-shaped resistance rods respectively drive the two atomizing nozzles to reset.

[0010] According to the above technical scheme, the handheld shell is provided with a wiping device, and the wiping device includes a motor, a rotating rod, a fixing part, a cotton ball holder, and a disposable wiping cotton ball. The motor is fixed to the lower outer wall of the handheld shell, the rotating rod is fixedly installed at the motor output end, the fixing part is fixedly installed on the lower outer wall of the handheld shell, the rotating rod is rotatably installed on the inner wall of the fixing part, the cotton ball holder is slidably installed on the outer wall of the rotating rod away from the motor, and the disposable wiping cotton ball is inserted into the inner wall of the cotton ball holder. Before performing the sampling operation, it is necessary to wipe and disinfect the sample body. At this time, the disposable sampling needle tube is not installed yet. The disposable wiping cotton ball is installed on the inner wall of the cotton ball holder. The motor is started by the switch assembly, the motor drives the rotating rod to rotate, the rotating rod drives the cotton ball holder to rotate, and the cotton ball holder drives the disposable wiping cotton ball to rotate.

[0011] According to the above technical solution, the wiping device also includes a toggle rod, a plurality of convex balls, and a spring. The toggle rod is fixedly mounted on the front end of the handheld shell, and the plurality of convex balls are fixedly mounted on the outer wall of the cotton ball holder. One end of the spring is fixedly connected to the end of the rotating rod away from the motor, and the other end of the spring is fixedly mounted on the outer wall of the cotton ball holder. During the rotation of the cotton ball holder, the toggle rod will continuously contact the convex ball. When the toggle rod contacts the convex ball, the convex ball will drive the cotton ball holder to move forward. When the toggle rod does not contact the convex ball, the spring will pull the cotton ball holder to reset.

[0012] The present invention provides a medical sampler having the following beneficial effects:

[0013] (1) The present invention arranges a handheld housing, a hydraulic press, a hydraulic rod, a disposable sampling needle tube, a switch assembly, an L-shaped push rod, and an emptying piston, so that the emptying piston can draw out the air inside the disposable sampling needle tube due to the air pressure during the backward movement, thereby achieving a pre-emptying effect and making the inside of the disposable sampling needle tube a negative pressure state. At this time, the disposable sampling needle tube is inserted into the sample body. Due to the negative pressure, the accumulated liquid will be automatically drawn into the disposable sampling needle tube. The accumulated liquid extraction process is stable and fast, thereby improving the efficiency and stability of the sampling work. Through the arrangement of the slide block, the anti-backflow swivel, the push rod, the slide plate, and the sealing slider, when the hydraulic rod moves backward into place, a number of sealing sliders are contracted to close, and the disposable sampling needle tube and the handheld housing are sealed and isolated by the sealing slider, thereby achieving an anti-backflow effect and avoiding the situation of accumulated liquid backflow in the subsequent sampling process.

[0014] (2) The present invention arranges a disinfection water tank, an air bag, an atomizing nozzle, an air pipe, and a water pipe so that two atomizing nozzles spray disinfectant water on the joint between the handheld housing and the disposable sampling needle tube for disinfection, thereby avoiding cross infection during the process of replacing the disposable sampling needle tube, achieving the effect of atomizing disinfection after each sampling operation, thereby improving the safety of the sampling process. By arranging a rebounder, an L-shaped resistance rod, and a contact rod, the atomizing nozzle can expand the disinfection area by rotating, thereby achieving a large-scale disinfection effect and avoiding the occurrence of inadequate disinfection at individual angles.

[0015] (3) The present invention arranges a motor, a rotating rod, a fixing part, a cotton ball holder, and a disposable wiping cotton ball so that the cotton ball holder drives the disposable wiping cotton ball to rotate. The staff brings the disposable wiping cotton ball close to the position to be sampled for wiping and disinfection. Compared with manual wiping and disinfection, the rotating disposable wiping cotton ball can wipe the position to be sampled more efficiently, thereby improving the disinfection effect and work efficiency. By arranging the toggle rod, the convex ball, and the spring, the cotton ball holder continuously drives the disposable wiping cotton ball to vibrate. During the wiping process, the disposable wiping cotton ball can squeeze out the internal disinfectant through vibration, thereby avoiding the waste caused by the failure to squeeze out all the disinfectant inside the disposable wiping cotton ball during the wiping and disinfection process, thereby improving the utilization rate of the disposable wiping cotton ball, thereby achieving the effect of improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the present invention as a whole;

[0017] Figure 2 It is a schematic diagram of a right side cross section of the present invention;

[0018] Figure 3 It is a schematic diagram of the local structure of the present invention;

[0019] Figure 4 It is a schematic diagram of the structure of the anti-backflow swivel of the present invention;

[0020] Figure 5 is a schematic diagram of a disinfection device of the present invention;

[0021] Figure 6 For the present invention Figure 5 A magnified schematic diagram of point A;

[0022] Figure 7 is a schematic diagram of a wiping device of the present invention;

[0023] Figure 8 For the present invention Figure 7 An enlarged schematic diagram of point B.

[0024] In the figure: 1. Hand-held housing; 2. Hydraulic press; 3. Hydraulic rod; 4. Slide block; 5. Disposable sampling needle tube; 6. Disinfection device; 61. Disinfection water tank; 62. Air bag; 63. Atomizing nozzle; 64. Air pipe; 65. Water pipe; 66. Rebounder; 67. L-shaped resistance rod; 68. Contact rod; 7. Wiping device; 71. Motor; 72. Rotating rod; 73. Fixing part; 74. Toggle rod; 75. Cotton ball holder; 76. Disposable wiping cotton ball; 77. Convex ball; 78. Spring; 8. Switch assembly; 9. L-shaped push rod; 10. Anti-backflow swivel; 11. Emptying piston; 12. Push rod; 13. Slide plate; 14. Sealing slider. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] See also Figure 1-8 , one embodiment of the present invention is: a medical sampler includes a handheld shell 1, a hydraulic press 2 is fixedly installed on the upper surface of the handheld shell 1, a hydraulic rod 3 is fixedly installed on the output end of the hydraulic press 2, an L-shaped push rod 9 is fixedly connected to the outer wall of the middle part of the hydraulic rod 3, and an emptying piston 11 is fixedly installed on the end of the L-shaped push rod 9 away from the hydraulic rod 3. A disposable sampling needle tube 5 is threadedly installed on the front end of the handheld shell 1, and a switch assembly 8 is fixedly installed on the lower outer wall of the handheld shell 1. An emptying bin is arranged inside the handheld shell 1, and the emptying piston 11 is slidably installed on the inner wall of the emptying bin of the handheld shell 1. Through the arrangement of the above structure, the inside of the disposable sampling needle tube 5 is in a negative pressure state. At this time, the disposable sampling needle tube 5 is inserted into the sample to be sampled. Due to the negative pressure, the accumulated fluid will be automatically extracted into the disposable sampling needle tube 5. The accumulated fluid extraction process is stable and fast, which improves the efficiency and stability of the sampling work.

[0027] A slide block 4 is fixedly installed at one end of the hydraulic rod 3 away from the hydraulic press 2, and an anti-backflow swivel 10 is rotatably installed at the front end of the handheld shell 1. A push rod 12 is fixedly installed on the outer wall of the anti-backflow swivel 10, and the end of the push rod 12 away from the anti-backflow swivel 10 is located on the movement trajectory of the slide block 4, and the inner wall of the anti-backflow swivel 10 is rotatably connected with a slide plate 13, and the slide plate 13 is fixedly installed at the front end of the handheld shell 1, and one side of several sealing sliders 14 is slidably connected to the surface of the slide plate 13, and the other sides of several sealing sliders 14 are slidably connected to the anti-backflow swivel 10. Through the arrangement of the above structure, the disposable sampling needle tube 5 and the handheld shell 1 are sealed and isolated by the sealing slider 14, thereby achieving the anti-backflow effect and avoiding the backflow of accumulated liquid in the subsequent sampling process.

[0028] When in use, the disposable sampling needle tube 5 is installed at the front end of the handheld housing 1, and the hydraulic press 2 is started through the switch assembly. The hydraulic press 2 drives the hydraulic rod 3 to move backward, and the hydraulic rod 3 drives the L-shaped push rod 9 to move backward. The L-shaped push rod 9 drives the emptying piston 11 to move backward. During the backward movement of the emptying piston 11, the air inside the disposable sampling needle tube 5 will be extracted due to the air pressure, so as to achieve the effect of pre-emptying, so that the inside of the disposable sampling needle tube 5 is in a negative pressure state. At this time, the disposable sampling needle tube 5 is inserted into the sample to be sampled. Due to the negative pressure, the accumulated liquid will be automatically extracted into the disposable sampling needle tube 5. The accumulated liquid extraction process is stable and fast, which improves the efficiency and stability of the sampling work. During the backward movement of the hydraulic rod 3, the hydraulic rod 3 drives the slide block 4 to move backward. During the movement, the slide block 4 will push the push rod 12 and push the push rod 12 to the right. The push rod 12 drives the anti-backflow swivel 10 to rotate to the right. Since several sealing sliders 14 are limited by the anti-backflow swivel 10 and the slide plate 13 at the same time, the anti-backflow swivel 10 will drive several sealing sliders 14 to shrink inward at the same time during its rotation. When the hydraulic rod 3 moves backward into place, several sealing sliders 14 shrink to close, so that the disposable sampling needle tube 5 and the handheld shell 1 are sealed and isolated by the sealing slider 14, thereby achieving the anti-backflow effect and avoiding the backflow of accumulated liquid in the subsequent sampling process.

[0029] See also Figure 1-8 On the basis of the above embodiment, in another embodiment of the present invention, the handheld housing 1 is provided with a disinfection device 6, which includes a disinfection water tank 61, an air bag 62, two atomizing nozzles 63, an air pipe 64, and two water pipes 65. The disinfection water tank 61 is fixedly installed inside the handheld housing 1, and the air bag 62 is fixedly installed on the top of the handheld housing 1. One end of the air pipe 64 passes through and is fixedly connected to the outer wall of the air bag 62, and the other end of the air pipe 64 passes through and is fixedly installed on the outer wall of the disinfection water tank 61. One end of the two water pipes 65 passes through and is fixedly installed on both sides of the outer wall of the disinfection water tank 61, and the outer walls of the two water pipes 65 are fixedly installed on both sides of the outer wall of the handheld housing 1. The two atomizing nozzles 63 are respectively rotatably connected to the other ends of the two water pipes 65. Through the arrangement of the above structure, the two atomizing nozzles 63 spray disinfectant water on the joint of the handheld housing 1 and the disposable sampling needle tube 5 for disinfection, avoiding cross infection during the process of replacing the disposable sampling needle tube 5, achieving the effect of performing atomization disinfection after each sampling operation, and improving the safety of the sampling process.

[0030] The disinfection device 6 also includes two rebounders 66, two L-shaped resistance rods 67, and two contact rods 68. The two L-shaped resistance rods 67 are respectively fixedly mounted on the inner walls of the two atomizing nozzles 63. One ends of the two rebounders 66 are fixedly mounted on the front end of the handheld shell 1. The other ends of the two rebounders 66 are respectively fixedly connected to the outer walls of the two L-shaped resistance rods 67. The two contact rods 68 are fixedly mounted on the outer wall of the hydraulic rod 3. The two L-shaped resistance rods 67 are respectively located on the movement trajectories of the two contact rods 68. Through the arrangement of the above structure, the atomizing nozzle 63 expands the disinfection area by rotating, thereby achieving a large-scale disinfection effect and avoiding the occurrence of inadequate disinfection at individual angles.

[0031] The handheld shell 1 is provided with a wiping device 7, which includes a motor 71, a rotating rod 72, a fixing member 73, a cotton ball holder 75, and a disposable wiping cotton ball 76. The motor 71 is fixed to the outer wall at the bottom of the handheld shell 1, the rotating rod 72 is fixedly installed at the output end of the motor 71, the fixing member 73 is fixedly installed on the outer wall at the bottom of the handheld shell 1, the rotating rod 72 is rotatably installed on the inner wall of the fixing member 73, the cotton ball holder 75 is slidably installed on the outer wall of the rotating rod 72 away from the end of the motor 71, and the disposable wiping cotton ball 76 is plugged into the inner wall of the cotton ball holder 75. Through the arrangement of the above structure, the cotton ball holder 75 drives the disposable wiping cotton ball 76 to rotate, and the staff wipes and disinfects the disposable wiping cotton ball 76 close to the position to be sampled. Compared with manual wiping and disinfection, the rotating disposable wiping cotton ball 76 can wipe the position to be sampled more efficiently, thereby improving the disinfection effect and work efficiency.

[0032] The wiping device 7 also includes a toggle rod 74, a plurality of convex balls 77, and a spring 78. The toggle rod 74 is fixedly mounted on the front end of the handheld shell 1, and the plurality of convex balls 77 are fixedly mounted on the outer wall of the cotton ball holder 75. One end of the spring 78 is fixedly connected to the end of the rotating rod 72 away from the motor 71, and the other end of the spring 78 is fixedly mounted on the outer wall of the cotton ball holder 75. Through the arrangement of the above structure, the cotton ball holder 75 continuously drives the disposable wiping cotton ball 76 to vibrate. The disposable wiping cotton ball 76 can squeeze out the internal disinfectant through vibration during the wiping process, thereby avoiding the waste caused by the failure to squeeze out all the disinfectant inside the disposable wiping cotton ball 76 during the wiping and disinfection process, thereby improving the utilization rate of the disposable wiping cotton ball 76, thereby achieving the effect of improving work efficiency.

[0033] During use, after the sampling work is completed, the disposable sampling needle tube 5 is removed, and the hydraulic press 2 is closed by the switch assembly 8. The hydraulic press 2 drives the hydraulic rod 3 to move forward, and the hydraulic rod 3 drives the L-shaped push rod 9 to move forward. The L-shaped push rod 9 will squeeze the air bag 62 during the forward movement. The air bag 62 transports the gas to the disinfection water tank 61 through the air pipe 64. After the inside of the disinfection water tank 61 is pressurized by the gas, the disinfection water is transported to the two atomizing nozzles 63 through two water pipes 65 respectively, so that the two atomizing nozzles 63 spray the disinfection water on the joint between the handheld shell 1 and the disposable sampling needle tube 5 for disinfection, avoiding cross infection during the process of replacing the disposable sampling needle tube 5, and achieving a mist after each sampling operation. The effect of disinfection is improved, and the safety of the sampling process is improved; when the hydraulic rod 3 moves forward, the hydraulic rod 3 drives the two contact rods 68 to move forward. During the movement, the two contact rods 68 will respectively contact the two L-shaped resistance rods 67 and push the two L-shaped resistance rods 67 forward, and the two L-shaped resistance rods 67 respectively drive the two atomizing nozzles 63 to rotate. When the two contact rods 68 do not contact the two L-shaped resistance rods 67, the two L-shaped resistance rods 67 rebound and reset through the two rebounders 66 respectively, and the two L-shaped resistance rods 67 respectively drive the two atomizing nozzles 63 to reset, so that the atomizing nozzles 63 expand the disinfection area by rotation, thereby achieving a large-scale disinfection effect and avoiding the situation where disinfection is not in place at individual angles.

[0034] Before the sampling operation is carried out, the sample body needs to be wiped and disinfected. At this time, the disposable sampling needle tube 5 is not installed yet. The disposable wiping cotton ball 76 is installed on the inner wall of the cotton ball holder 75. The motor 71 is started by the switch assembly 8. The motor 71 drives the rotating rod 72 to rotate, and the rotating rod 72 drives the cotton ball holder 75 to rotate. The cotton ball holder 75 drives the disposable wiping cotton ball 76 to rotate. The staff will wipe and disinfect the disposable wiping cotton ball 76 close to the position to be sampled. Compared with manual wiping and disinfection, the rotating disposable wiping cotton ball 76 can wipe the position to be sampled more efficiently, thereby improving the disinfection effect and work efficiency. During the rotation of the cotton ball holder 75 The toggle rod 74 will continuously contact the convex ball 77. When the toggle rod 74 contacts the convex ball 77, the convex ball 77 will drive the cotton ball holder 75 to move forward. When the toggle rod 74 does not contact the convex ball 77, the spring 78 will pull the cotton ball holder 75 to reset, so that the cotton ball holder 75 continuously drives the disposable wiping cotton ball 76 to vibrate. The disposable wiping cotton ball 76 can squeeze out the internal disinfectant through vibration during the wiping process, avoiding the waste caused by the failure to squeeze out all the disinfectant inside the disposable wiping cotton ball 76 during the wiping and disinfection process, thereby improving the utilization rate of the disposable wiping cotton ball 76, thereby achieving the effect of improving work efficiency.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A medical sampler, comprising a handheld housing (1), characterized in that: A hydraulic press (2) is fixedly mounted on the upper surface of the handheld housing (1); a hydraulic rod (3) is fixedly mounted on the output end of the hydraulic press (2); an L-shaped push rod (9) is fixedly connected to the middle outer wall of the hydraulic rod (3); an emptying piston (11) is fixedly mounted on the end of the L-shaped push rod (9) away from the hydraulic rod (3); a disposable sampling needle tube (5) is threadedly mounted on the front end of the handheld housing (1); and a switch assembly (8) is fixedly mounted on the lower outer wall of the handheld housing (1); The handheld housing (1) is provided with a disinfection device (6), the disinfection device (6) comprising a disinfection water tank (61), an air bag (62), two atomizing nozzles (63), an air pipe (64), and two water pipes (65). The disinfection water tank (61) is fixedly mounted inside the handheld housing (1), the air bag (62) is fixedly mounted on the top of the handheld housing (1), one end of the air pipe (64) penetrates through and is fixedly connected to the outer wall of the air bag (62), the other end of the air pipe (64) penetrates through and is fixedly mounted on the outer wall of the disinfection water tank (61), one end of the two water pipes (65) penetrates through and is fixedly mounted on both sides of the outer wall of the disinfection water tank (61), the outer walls of the two water pipes (65) are fixedly mounted on both sides of the outer wall of the handheld housing (1), and the two atomizing nozzles (63) are rotatably connected to the other ends of the two water pipes (65); The disinfection device (6) further comprises two rebounders (66), two L-shaped abutment rods (67), and two contact rods (68), wherein the two L-shaped abutment rods (67) are respectively fixedly mounted on the inner walls of the two atomizing nozzles (63), one end of the two rebounders (66) is fixedly mounted on the front end of the handheld housing (1), and the other ends of the two rebounders (66) are respectively fixedly connected to the outer walls of the two L-shaped abutment rods (67); The end of the hydraulic rod (3) away from the hydraulic press (2) is fixedly mounted with a slide block (4); the front end of the handheld housing (1) is rotatably mounted with an anti-backflow swivel (10); the outer wall of the anti-backflow swivel (10) is fixedly mounted with a push rod (12); the end of the push rod (12) away from the anti-backflow swivel (10) is located on the movement track of the slide block (4); the inner wall of the anti-backflow swivel (10) is rotatably connected with a slide plate (13); the slide plate (13) is fixedly mounted on the front end of the handheld housing (1); one side of a plurality of sealing sliders (14) is slidably connected to the surface of the slide plate (13); the other sides of the plurality of sealing sliders (14) are slidably connected to the anti-backflow swivel (10); The two contact rods (68) are both fixedly mounted on the outer wall of the hydraulic rod (3), and the two L-shaped abutment rods (67) are respectively located on the movement tracks of the two contact rods (68).

2. A medical sampler according to claim 1, characterized in that: An emptying chamber is provided inside the handheld housing (1), and the emptying piston (11) is slidably mounted on the inner wall of the emptying chamber of the handheld housing (1).

3. A medical sampler according to claim 2, characterized in that: The handheld housing (1) is provided with a wiping device (7), the wiping device (7) comprising a motor (71), a rotating rod (72), a fixing member (73), a cotton ball holder (75), and a disposable wiping cotton ball (76). The motor (71) is fixed to the lower outer wall of the handheld housing (1), the rotating rod (72) is fixedly mounted on the output end of the motor (71), the fixing member (73) is fixedly mounted on the lower outer wall of the handheld housing (1), the rotating rod (72) is rotatably mounted on the inner wall of the fixing member (73), the cotton ball holder (75) is slidably mounted on the outer wall of one end of the rotating rod (72) away from the motor (71), and the disposable wiping cotton ball (76) is plugged into the inner wall of the cotton ball holder (75).

4. A medical sampler according to claim 3, characterized in that: The wiping device (7) further comprises a toggle rod (74), a plurality of convex balls (77), and a spring (78); the toggle rod (74) is fixedly mounted on the front end of the handheld housing (1); the plurality of convex balls (77) are fixedly mounted on the outer wall of the cotton ball support (75); one end of the spring (78) is fixedly connected to the end of the rotating rod (72) away from the motor (71); and the other end of the spring (78) is fixedly mounted on the outer wall of the cotton ball support (75).

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