CN111920425A

CN111920425A - Automatic finger hemostix for clinical laboratory

Info

Publication number: CN111920425A
Application number: CN202010777999.6A
Authority: CN
Inventors: 余蕾
Original assignee: Guizhou Medical University
Current assignee: Guizhou Medical University
Priority date: 2020-08-05
Filing date: 2020-08-05
Publication date: 2020-11-13

Abstract

The invention relates to a finger automatic blood collector for clinical laboratory, which comprises a base, a fixing device and a blood collector, wherein a finger placing groove is arranged on the upper surface of the base, a finger fixing ring is arranged at the position, close to the innermost end, of the finger placing groove, a lifting rod can control the lifting of the fixing device, a pressing device is clamped outside the blood collector, the blood collector can be conveyed and positioned through a sliding rail, the pressure of a pressing plate on the finger can also be sensed, an adjusting cover at one end of the blood collector rotates for a circle to collect fixed blood samples, an inner circular tube of the blood collector is detachable, and the telescopic replacement is controlled through a pull rod.

Description

Automatic finger hemostix for clinical laboratory

Technical Field

The invention relates to the technical field of blood sampling instruments for clinical laboratory, in particular to an automatic finger blood sampler for clinical laboratory.

Background

The conventional inspection of blood is the most common one inspection in clinical laboratory's inspection project, the blood sampling position generally is finger or arm, the finger hemostix variety commonly used at present is various, generally be disposable product, but if the improper operation easily causes cross infection at the in-process of manual change hemostix, there is great risk and efficiency not high, simultaneously, because the difference of individual leads to everyone's skin thickness difference to pierce the degree of depth also different, if the degree of depth of piercing of blood taking needle is difficult to confirm, then easily cause to pierce the degree of depth not enough or cause unnecessary injury for the patient too deeply.

Patent CN210112728U discloses a neotype finger blood sampling device, through setting up fixed establishment, can fix the finger of patient when taking blood, prevent at the blood sampling in-process, the wrench movement of wantonly causes the trouble for taking blood, shelter from the blood sampling process through the shielding plate simultaneously, avoid the infant disease to receive the amazing at the blood sampling in-process, lead to its mood to arouse, influence going on of taking a blood sample then, thereby quick blood sampling has been realized, the misery of patient has been alleviateed, nevertheless, the volume of taking a blood is wayward, it is comparatively complicated to change, there is the health risk, be difficult to use widely.

Therefore, it is necessary to provide an efficient and sanitary automatic finger blood collector, which can automate the puncturing depth and other operation processes to reduce the working pressure of medical staff, relieve the pain of patients, and improve the working efficiency, so that the routine examination of blood in clinical laboratory can be performed smoothly.

Disclosure of Invention

The invention provides an automatic finger blood collector for clinical laboratories, aiming at the existing problems.

The technical scheme of the invention is as follows: an automatic finger hemostix for clinical laboratory, which comprises a base for supporting the whole device, wherein the upper surface of the base is provided with a finger placing groove, the finger placing groove is provided with a finger fixing ring near the innermost end, the base at one side of the finger placing groove is provided with a controller, a lifting rod is fixedly arranged above the controller,

a fixing device connected with the lifting rod, wherein the middle part of a back plate of the fixing device is provided with an arc-shaped groove, the upper part in the arc-shaped groove is provided with a rotating wheel, the two sides of the middle part of the arc-shaped groove are provided with clamping pins, the two sides of the back plate are fixedly connected with side plates, the bottoms of the inner side surfaces of the side plates are symmetrically provided with telescopic rods, the tail end of each telescopic rod is provided,

lie in and dismantle fixed hemostix between two splint, the hemostix upper end be equipped with rotate the wheel and pass through gear engagement pivoted regulation lid, the regulation lid be equipped with the keyway of bayonet lock joint, the hemostix lower extreme is equipped with the syringe needle, is close to the hemostix of syringe needle department and is equipped with closing device outward, and inside including coaxial outer pipe, the diameter of hemostix establish the sleeve pipe outside inner circle pipe for half interior pipe, cover of excircle pipe, the through-hole has been seted up to the positive central point position at outer pipe both ends, is equipped with the protrusion pipe of connecting the syringe needle in one of them through-hole, is equipped with the threaded rod in another through-hole.

Further, the innermost end of the finger placing groove is provided with an infrared receiver, and the infrared receiver is electrically connected with the controller.

Further, the solid fixed ring one end of finger is equipped with fastener, and the solid fixed ring internal surface of finger is equipped with the disinfection piece in proper order and places hole, puncture hole, hemostatic slice pivot, the disinfection piece is placed the hole and is equipped with the recess that holds the aseptic cotton piece, the recess is deepened inside the solid fixed ring of finger, winding hemostatic thin slice in the hemostatic slice pivot, the solid fixed ring bottom of finger is equipped with the slider, slider and the spout sliding connection in the finger standing groove, the built-in motor electric connection in slider and the finger standing groove.

Further, the threaded rod passes through an internal thread hole in the center of the adjusting cover, and internal threads in the internal thread hole are matched with external threads on the threaded rod.

Further, the tip that the sleeve pipe is close to protrusion pipe one end is equipped with the retaining ring, the retaining ring cover is established including the pipe outside for with the gap between interior pipe outer wall and the outer pipe inner wall sealed, be equipped with a plurality of springs around outer pipe axis between retaining ring and the outer pipe, and the spring axis parallels with outer pipe axis, the sleeve pipe that is located threaded rod one end be equipped with sleeve pipe integrated into one piece's roof, be equipped with on the roof central point to the pull rod of protrusion pipe end extension, the pull rod stretches into in the inner pipe, and the pull rod tip is equipped with the piston.

Furthermore, the outer surface of the pull rod is provided with an anti-inversion gear, the joint of the inner circular tube and the pull rod is provided with a tooth groove matched with the inverted tooth, the tail end of the pull rod is provided with an openable angle, a clamping groove is formed in the pull rod close to the angle, a telescopic circular ring for the pull rod to pass through is arranged in the center of the top plate, the telescopic circular ring is fixed with the top plate through a spring, balls matched with the clamping groove are arranged on the telescopic circular ring, a magnetic sheet is arranged at one end, close to the adjusting cover, of the inner circular tube, the pull rod can only stretch in one direction to avoid blood backflow, and the inner circular tube is convenient to replace.

Further, closing device includes detachable connecting rod, mounting plate, clamp plate, connecting rod one end can be dismantled and connect the hemostix, slide rail sliding connection on the other end and the curb plate, and the mounting plate is connected to the connecting rod lower extreme, the mounting plate rotates with the clamp plate to be connected, is equipped with a plurality of springs between mounting plate and the clamp plate, and the clamp plate is 45 settings under the slant when the spring is stretched naturally, still is equipped with first pressure sensor on the mounting plate, first pressure sensor and controller electric connection.

Further, be equipped with the stopper in the arc wall that is located the runner wheel top, the stopper is used for carrying on spacingly to threaded rod extension length, and the bottom surface is equipped with second pressure sensor under the stopper, second pressure sensor and controller electric connection.

The invention has the beneficial effects that:

(1) according to the invention, after the blood collector is fixed, the finger of the patient can be automatically punctured and the blood can be collected under the driving of the lifting rod, the pressure sensor is arranged, the puncturing depth can be controlled, the injury to the patient can not be caused, the step of manual blood collection is replaced, the problem that the puncturing depth is difficult to control when the working experience of medical personnel is insufficient is avoided, the cost is saved, and the blood collection process is optimized.

(2) The finger fixing ring provided by the invention can disinfect, puncture and stop bleeding for a patient through rotation, is convenient to use, does not cause cross infection, and meanwhile, through the matching of the adjusting cover and the threaded rod, the microminiaturization of the movement stroke of the piston is ensured, and the blood volume accuracy of blood sampling is ensured.

(3) The automatic finger blood collector has reasonable structure and rich functions, reduces the contact between medical care personnel and patients to the maximum extent, avoids unnecessary infection, lightens the work burden of the medical care personnel, improves the work efficiency, relieves the pain of the patients, has stronger operability and controllable puncture depth, thereby optimizing the blood collection mode.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a front view of the overall structure of the present invention;

FIG. 3 is a side view of the overall structure of the present invention;

FIG. 4 is a schematic view of a fastening device and partial structure of the present invention;

FIG. 5 is a schematic structural diagram of a stopper and a second pressure sensor according to the present invention;

FIG. 6 is a schematic view of the finger placement groove and the finger fixing ring according to the present invention;

FIG. 7 is a schematic view of a rotating shaft structure of the hemostatic tablet of the present invention;

FIG. 8 is a schematic view of the hemostix of the present invention before use;

FIG. 9 is a schematic structural view of the blood collection device of the present invention in use;

FIG. 10 is a schematic view of the blood collection set of the present invention in its post-use configuration;

FIG. 11 is a schematic structural view of the tie bar of the present invention at A in a fastened state;

fig. 12 is a schematic structural view of the pull rod at the position A of the invention when the pull rod is withdrawn after use.

Wherein, 1-a base, 11-a finger placing groove, 111-a sliding groove, 12-a finger fixing ring, 121-a fastening device, 122-a disinfection tablet placing hole, 123-a puncture hole, 124-a hemostatic tablet rotating shaft, 125-a sliding block, 13-a controller, 14-a lifting rod, 15-an infrared receiver, 16-a built-in motor, 2-a fixing device, 21-a back plate, 211-an arc groove, 212-a rotating wheel, 213-a bayonet, 214-a limiting block, 215-a second pressure sensor, 22-a side plate, 221-a telescopic rod, 222-a clamping plate, 223-a sliding rail, 3-a hemostix, 31-an adjusting cover, 32-a pin groove, 33-a needle, 34-a pressing device, 341-a connecting rod and 342-a fastening plate, 343-pressing plate, 344-first pressure sensor, 35-outer circle pipe, 351-protruding round pipe, 352-threaded rod, 353-magnetic sheet, 36-inner circle pipe, 361-pull rod, 3611-internal angle, 3612-clamping groove, 362-piston, 37-sleeve, 371-retaining ring, 372-top plate, 3721-telescopic ring and 3722-ball.

Detailed Description

As shown in fig. 1-6, an automatic blood sampling device with fingers for clinical laboratory, comprising a base 1 for supporting the whole device, a finger placing groove 11 is provided on the upper surface of the base 1, a finger fixing ring 12 is provided near the innermost end of the finger placing groove 11, a controller 13 is provided on the base at one side of the finger placing groove 11, a lifting rod 14 is fixedly provided above the controller 13, an infrared receiver 15 is provided at the innermost end of the finger placing groove 11, the infrared receiver 15 is electrically connected with the controller 13, the controller 13 is a commercially available S7-200PLC controller, a fastening device 121 is provided at one end of the finger fixing ring 12, a disinfection tablet placing hole 122, a puncture hole 123 and a hemostatic tablet rotating shaft 124 are sequentially provided on the inner surface of the finger fixing ring 12, the disinfection tablet placing hole 122 is provided with a groove for accommodating a disinfection cotton tablet, the groove extends into the finger fixing ring 12, a hemostatic sheet is wound on the hemostatic sheet rotating shaft 124, the slider 125 is slidably connected to the sliding groove 111 in the finger placement groove 11, the slider 125 is electrically connected to the built-in motor 16 in the finger placement groove 11, and the built-in motor 16 is a commercially available OT-12F reduction motor, and the external shape structure of the built-in motor is adjusted to fit the device.

As shown in fig. 1-4, the fixing device 2 connected to the lifting rod 14, an arc-shaped groove 211 is disposed in the middle of a back plate 21 of the fixing device 2, a rotating wheel 212 is disposed at the upper portion of the arc-shaped groove 211, locking pins 213 are disposed on two sides of the middle of the arc-shaped groove 211, side plates 22 are fixedly connected to two sides of the back plate 21, telescopic rods 221 are symmetrically disposed at the bottoms of inner side surfaces of the side plates 22, clamping plates 222 are disposed at the ends of the telescopic rods 221, a limiting block 214 is disposed in the arc-shaped groove 211 above the rotating wheel 212, the limiting block 214 is used for limiting the extension length of a threaded rod 352, a second pressure sensor 215 is disposed on the lower bottom surface of the limiting block 214, the second pressure sensor 215 is.

As shown in fig. 1-3 and 7, a blood sampling device 3 detachably fixed between two clamping plates 222, an adjusting cover 31 rotating with a rotating wheel 212 through gear engagement is disposed at the upper end of the blood sampling device 3, the adjusting cover 31 is provided with a pin slot 32 engaged with a pin 213, a needle 33 is disposed at the lower end of the blood sampling device 3, a pressing device 34 is disposed outside the blood sampling device 3 near the needle 33, the pressing device 34 comprises a detachable connecting rod 341, a fastening plate 342, and a pressing plate 343, one end of the connecting rod 341 is detachably connected with the blood sampling device 3, the other end is slidably connected with a slide rail 223 on a side plate 22, the lower end of the connecting rod 341 is connected with the fastening plate 342, the fastening plate 342 is rotatably connected with the pressing plate 343, a plurality of springs are disposed between the fastening plate 342 and the pressing plate 343, the pressing plate 343 is disposed at an angle of 45 ° downward when the springs are naturally extended, a first pressure, the first pressure sensor 344 is a commercially available miniature ZZ110-008 pressure sensor.

As shown in fig. 7-9, the hemostix 3 comprises a coaxial outer circular tube 35, an inner circular tube 36 with a diameter half of that of the outer circular tube 35, and a sleeve 37 sleeved outside the inner circular tube 36, wherein a through hole is provided at the center of the two ends of the outer circular tube 35, a protruding circular tube 351 connected with the needle 33 is provided in one through hole, a threaded rod 352 is provided in the other through hole, the threaded rod 352 passes through an internal threaded hole at the center of the adjusting cap 31, the internal thread in the internal threaded hole matches with the external thread on the threaded rod 352, a retaining ring 371 is provided at the end of the sleeve 37 near the protruding circular tube 351, the retaining ring 371 is sleeved outside the inner circular tube 36 for sealing the gap between the outer wall of the inner circular tube 36 and the inner wall of the outer circular tube 35, a plurality of springs are provided between the retaining ring 371 and the outer circular tube 35 around the axis of the outer circular tube 35, the axes, the center of the top plate 372 is provided with a pull rod 361 extending to the end of the convex circular tube 351, the pull rod 361 extends into the inner circular tube 36, and the end of the pull rod 361 is provided with a piston 362.

As shown in fig. 7-11, an anti-reverse gear is disposed on the outer surface of the pull rod 361, a tooth socket matched with the anti-reverse gear is disposed at the connection position of the inner circular tube 36 and the pull rod 361, an openable and closable angle 3611 is disposed at the tail end of the pull rod 361, a slot 3612 is disposed at the pull rod 361 near the angle 3611, a telescopic ring 3721 for the pull rod 361 to pass through is disposed in the center of the top plate 372, the telescopic ring 3721 is fixed to the top plate 372 by a spring, a ball 3722 matched with the slot 3612 is disposed on the telescopic ring 3721, and a magnetic sheet 353 is disposed at one end of the inner circular tube 35 near the adjusting cover 31.

The work principle of the automatic finger blood collector for the clinical laboratory is as follows:

firstly, the device is adjusted to a preparation state, the connecting rod 341 is pulled out, the matched hemostix 3 is clamped at one end of the connecting rod 341, the connecting rod 341 is pushed to the lowest end along the sliding rail 223, the pin slot 32 of the hemostix 3 is matched and connected with the bayonet 213 in the arc-shaped slot 211, the adjusting cover 31 is matched and connected with the rotating wheel 212, then the telescopic rod 221 is adjusted to enable the clamping plate 222 to clamp the hemostix 3, the lifting rod 14 is adjusted to enable the back plate 21 to be communicated with the fixed hemostix 3 to be lifted, the needle head 33 is enabled to be away from the finger fixing ring 12 by a certain distance, and alcohol disinfection cotton sheets are placed in the disinfection sheet placing hole 122;

a patient puts a finger into the finger placing groove 11, the finger passes through the finger fixing ring 12, the finger belly part needing blood sampling is upward, when the infrared receiver 15 senses a signal of finger putting in, the finger is transmitted to the controller 13, the built-in motor 16 is started to enable the sliding block 125 to slide along the sliding groove 111, the finger fixing ring 12 rotates clockwise to enable the alcohol sterilized cotton sheet in the sterilized sheet placing hole 122 to sterilize the blood sampling part, when the finger fixing ring 12 rotates until the puncture hole 123 is opposite to the needle head 33, the rotation is stopped, the controller 13 controls the lifting rod 14 to descend slowly, the needle head 33 penetrates through the puncture hole 123 to start to penetrate into the blood sampling part, meanwhile, the pressing plate 343 is in contact with the lower part of the finger blood sampling part for fixation, when the pressure value sensed by the first pressure sensor 344 on the fixing plate 342 reaches a certain value, namely, the pressing plate 343 and the fixing plate 342 form an included angle of 25 degrees, the pressing, the sensing pressure of the first pressure sensor 344 can be adjusted for patients with different epidermis thicknesses so as to control the descending height of the needle head 33 and start blood collection;

the rotating wheel 212 starts to rotate to drive the adjusting cover 31 to rotate, so that the threaded rod 352 is pulled out from the outer circular tube 35 under the action of the internal threaded hole in the center of the adjusting cover 31, the spring is enabled to return to the natural length trend, the check ring 371 is pushed up to the right, the sleeve 37 is enabled to move to the right, the pull rod 361 is pulled under the action of the top plate 372, the piston 362 moves to the right, the blood drawing and sampling process is achieved, the change of the thread torsion stroke is small under the matching of the internal threaded hole of the adjusting cover 31 and the threaded rod 352, the moving distance of the piston 362 is enabled to be miniaturized, the defect that the difficulty in controlling the blood drawing amount is large due to the unstable moving stroke of the piston 362 is avoided, the accurate control of the blood drawing amount is achieved, at least 4 springs are used, when the threaded rod 352 retreats for enough length, namely the blood drawing amount reaches the specified requirement of 2ml, the, the second pressure sensor 215 at the bottom of the blood sampling device senses the pressure and transmits the pressure to the controller 13, then the lifting rod 14 lifts up, the needle head 33 is taken out from the blood sampling part, and the blood sampling work is finished;

then the built-in motor 16 starts the sliding block 125 to slide along the sliding slot 111, the finger fixing ring 12 continues to rotate clockwise, the hemostatic sheet rotating shaft 124 contacts with the blood sampling part to rotate, the hemostatic cotton sheet wound on the hemostatic sheet rotating shaft 124 automatically tears off one sheet to be attached to the blood sampling part after rotating for one circle, at this time, the patient can pull out the finger to leave, the medical staff pulls out the connecting rod 341 to separate the hemostix 3 from the back plate 21, the adjusting cover 31 continues to rotate to make the top plate 372 contact with the magnetic sheet 353 at one end in the outer circular tube 35, the magnetic sheet 353 attracts the telescopic circular ring 3721 to separate the ball 3722 from the slot 3612, the angle 3611 is opened, the adjusting cover 31 rotates in the opposite direction to make the telescopic circular ring 3721 and the ball 3722 push the angle 3611 to move leftwards, the anti-reverse gear is arranged at the connection of the inner circular tube 36 and the pull rod 361 to make the inner circular tube 36 and the needle 33, the new inner circular tube 36 and the new pull rod 361 are replaced, the pull rod 361 is inserted into the top plate 372, the closed angle 3611 penetrates through and separates the two balls 3722, the balls 3722 are clamped into the clamping groove 3612, the inner circular tube 36 is clamped into the outer circular tube 35, the next matching of the blood collector 3 is completed, the operation is repeated, and the blood collection work of a second patient is carried out.

Claims

1. A finger automatic blood sampler for clinical laboratory is characterized by comprising:

a base (1) for supporting the whole device, a finger placing groove (11) is arranged on the upper surface of the base (1), a finger fixing ring (12) is arranged at the position of the finger placing groove (11) close to the innermost end, a controller (13) is arranged on the base at one side of the finger placing groove (11), a lifting rod (14) is fixedly arranged above the controller (13),

the fixing device (2) is connected with the lifting rod (14), an arc-shaped groove (211) is arranged in the middle of a back plate (21) of the fixing device (2), a rotating wheel (212) is arranged at the upper portion in the arc-shaped groove (211), clamping pins (213) are arranged on two sides of the middle of the arc-shaped groove (211), side plates (22) are fixedly connected to two sides of the back plate (21), telescopic rods (221) are symmetrically arranged at the bottoms of the inner side surfaces of the side plates (22), clamping plates (222) are arranged at the tail ends of the telescopic rods (221),

lie in and dismantle fixed hemostix (3) between two splint (222), hemostix (3) upper end be equipped with rotate wheel (212) through gear engagement pivoted regulation lid (31), adjust lid (31) be equipped with cotter (32) of bayonet lock (213) joint, hemostix (3) lower extreme is equipped with syringe needle (33), be close to hemostix (3) of syringe needle (33) department and have pressure device (34) outward, and hemostix (3) are inside to be equipped with including coaxial outer pipe (35), diameter for outer pipe (35) half interior pipe (36), cover including pipe (36) outer sleeve pipe (37) are established to the cover, the through-hole has been seted up to the positive central position at outer pipe (35) both ends, is equipped with protrusion pipe (351) of connecting syringe needle (33) in one of them through-hole, is equipped with in another through-hole (352).

2. The automatic finger blood collector for clinical laboratory according to claim 1, wherein the innermost end of the finger placing groove (11) is provided with an infrared receiver (15), and the infrared receiver (15) is electrically connected with the controller (13).

3. The automatic finger blood collector for clinical laboratory according to claim 1, wherein a fastening device (121) is arranged at one end of the finger fixing ring (12), a disinfection tablet placing hole (122), a puncture hole (123) and a hemostatic tablet rotating shaft (124) are sequentially arranged on the inner surface of the finger fixing ring (12), the disinfection tablet placing hole (122) is provided with a groove for accommodating a disinfection cotton tablet, the groove extends into the finger fixing ring (12), a hemostatic sheet is wound on the hemostatic sheet rotating shaft (124), a sliding block (125) is arranged at the bottom of the finger fixing ring (12), the sliding block (125) is in sliding connection with a sliding groove (111) in the finger placing groove (11), and the sliding block (125) is electrically connected with a built-in motor (16) in the finger placing groove (11).

4. The automated finger hemostix of claim 1, wherein the threaded rod (352) passes through an internally threaded hole in the center of the adjustment cap (31), the internal thread of the internally threaded hole matching the external thread of the threaded rod (352).

5. The automatic finger hemostix for clinical laboratory according to claim 1, wherein the end of the sleeve (37) near one end of the protruding circular tube (351) is provided with a retaining ring (371), the retaining ring (371) is sleeved outside the inner circular tube (36) and used for sealing the gap between the outer wall of the inner circular tube (36) and the inner wall of the outer circular tube (35), a plurality of springs are arranged between the retaining ring (371) and the outer circular tube (35) around the axis of the outer circular tube (35), the axes of the springs are parallel to the axis of the outer circular tube (35), the sleeve (37) at one end of the threaded rod (352) is provided with a top plate (372) integrally formed with the sleeve (37), the central point of the top plate (372) is butted with a pull rod (361) extending to the end of the protruding circular tube (351), the pull rod (361) extends into the inner circular tube (36), and the end of the pull rod (361) is provided with a piston.

6. The automatic finger blood collector for clinical laboratory according to claim 5, wherein an anti-inversion gear is arranged on the outer surface of the pull rod (361), a tooth socket matched with the inverted tooth is arranged at the joint of the inner circular tube (36) and the pull rod (361), an angle (3611) capable of opening and closing is arranged at the tail end of the pull rod (361), a clamping groove (3612) is arranged on the pull rod (361) close to the angle (3611), a telescopic circular ring (3721) for the pull rod (361) to pass through is arranged in the center of the top plate (372), the telescopic circular ring (3721) is fixed with the top plate (372) through a spring, a ball (3722) matched with the clamping groove (3612) is arranged on the telescopic circular ring (3721), and a magnetic sheet (353) is arranged at one end of the outer circular tube (35) close to the adjusting cover (31).

7. The automatic finger blood collector for clinical laboratory according to claim 1, wherein said pressing device (34) comprises a detachable connecting rod (341), a fastening plate (342), and a pressing plate (343), one end of said connecting rod (341) is detachably connected to said blood collector (3), the other end of said connecting rod is slidably connected to a sliding rail (223) on said side plate (22), the lower end of said connecting rod (341) is connected to said fastening plate (342), said fastening plate (342) is rotatably connected to said pressing plate (343), a plurality of springs are disposed between said fastening plate (342) and said pressing plate (343), when said springs are naturally extended, said pressing plate (343) is inclined downward by 45 °, said fastening plate (342) is further provided with a first pressure sensor (344), and said first pressure sensor (344) is electrically connected to said controller (13).

8. The automatic finger blood collector for clinical laboratory according to claim 1, wherein a limiting block (214) is arranged in the arc-shaped groove (211) above the rotating wheel (212), the limiting block (214) is used for limiting the extending length of the threaded rod (352), a second pressure sensor (215) is arranged on the lower bottom surface of the limiting block (214), and the second pressure sensor (215) is electrically connected with the controller (13).