CN210644191U

CN210644191U - Automatic rear separating device for blood taking needle and needle holder

Info

Publication number: CN210644191U
Application number: CN201921074014.2U
Authority: CN
Inventors: 王晓庆; 石彦斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-10
Filing date: 2019-07-10
Publication date: 2020-06-02
Anticipated expiration: 2029-07-10

Abstract

The utility model relates to a rear automatic separation device for a blood taking needle and a needle holder, which comprises an installation panel, wherein the top surface of the installation panel is connected with a clamping mechanism, one end of the clamping mechanism is provided with a through hole, and the through hole penetrates through the installation panel downwards; the bottom surface of the mounting panel is provided with a screwing mechanism, the shaft seats are respectively mounted on the left side and the right side of the mounting panel, the screw rod is a bidirectional threaded rod, the screw rod is inserted into the shaft seats and is rotatably connected with the shaft seats, and the left mounting bracket and the right mounting bracket are respectively provided with internal threads in a horizontal penetrating manner; the internal threads are respectively matched with the threads at the left end and the right end of the screw rod; the other end of the left mounting bracket is provided with a first toothed plate, the other end of the right mounting bracket is provided with a second toothed plate, and the first toothed plate and the second toothed plate are respectively provided with a second semicircular hole which is opposite to each other; an output shaft of the motor is rotationally connected with the screw rod; the through hole and the second semicircular hole are communicated with each other in a vertically penetrating manner, the through hole is matched with the outer diameter of the mounting end of the needle holder, and the second semicircular hole is matched with the needle seat of the blood taking needle.

Description

Automatic rear separating device for blood taking needle and needle holder

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to blood taking needle and needle holder back autosegregation device.

Background

At present, the hospital uses disposable vacuum blood sampling devices for biochemical examination and clinical laboratory venous blood sampling of patients, and the disposable vacuum blood sampling devices comprise two parts, namely a disposable vacuum blood sampling needle and a disposable vacuum blood sampling tube. As shown in figure 1, the disposable vacuum blood taking needle 100 is sterilized and disinfected before leaving the factory, and each single product is hermetically packaged by a protective sleeve, belonging to a sterile disposable medical consumable; the external structure is a bidirectional needle 101, and the middle part is a needle seat 102 with threads; the needle holder 200 has a cylindrical structure, one end is a mounting end 201, and is provided with an internal thread (matching with the needle seat 102 of the blood collection needle 100), and the other end is an open round mouth, because the needle holder 200 does not enter into the human body when collecting blood samples, the part is reusable. At present, the separation method of the needle holder 200 and the blood collection needle 100 is manual operation, and the specific operation process is as follows:

1. a medical worker takes a disposable blood taking needle with an upper protective sleeve 301 (generally made into white) and a lower protective sleeve 302 (generally made into green), the upper protective sleeve and the lower protective sleeve are simultaneously screwed by two hands, the lower protective sleeve 302 falls off, one end and a needle seat of the blood taking needle are exposed, the upper protective sleeve 301 still sleeved on the blood taking needle is held by the left hand, a prepared needle holder is taken up by the right hand, the exposed needle head of the blood taking needle faces the mounting end of the needle holder and penetrates into the mounting end, the needle seat 102 and the mounting end 201 of the needle holder are forcibly screwed, and the screwed needle holder and the blood taking needle are combined into a whole;

2. the blood taking needle with the needle holder is held by the right hand, the protecting sleeve 301 on the blood taking needle is pulled off, the blood taking needle is exposed out of the other end, and the end can be punctured into the disinfected vein of the patient for blood sample collection;

3. after blood collection is completed, the blood taking needle is pulled out of the vein, the upper protective sleeve 301 which is pulled off before is held by a hand to sleeve the needle tip, the blood taking needle and the needle holder are twisted by two hands, the used blood taking needle is separated from the needle holder, the blood taking needle is placed into the medical waste storage box, and the needle holder can be used for the next time and can be used repeatedly.

The third step is the most fundamental problem to be solved by the utility model, and it is the operation of this step that is most easily harmful to the medical staff! Therefore, each disposable vacuum blood taking needle needs to be matched with a reusable needle holder, after the blood taking work of each medical staff is completed, the used disposable blood taking needle needs to be separated from the needle holder, the separated disposable blood taking needle is subjected to medical garbage disposal, the needle holder can be reused and used for the next patient, the existing separation method is completely manual, and the consequence of the manual mode is as follows: the fingers of medical workers are often punctured with the used disposable blood taking needles with bloodstains, so that the disposable blood taking needles have great infection risks, the manual operation is a screwing action, hundreds of screwing actions are the main causes of tenosynovitis of the medical workers every day, the manual operation efficiency is low, and the medical institution is improved to seek medical care to form elbow.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in overcoming the defect among the prior art, provides one kind can avoid occupational infection risk, reduce medical personnel intensity of labour, improve work efficiency, improve the blood taking needle and the needle holder of medical treatment environment after automatic separation device.

Therefore, the technical scheme is that the automatic rear separating device for the blood taking needle and the needle holder comprises an installation panel, wherein a clamping mechanism is connected to the top surface of the installation panel and arranged in parallel with the installation panel, and a through hole is formed in one end of the clamping mechanism and penetrates through the installation panel downwards; the bottom surface of the mounting panel is provided with a screwing mechanism, the screwing mechanism comprises a motor, a screw rod, a shaft seat, a left mounting bracket and a right mounting bracket, the shaft seat is respectively mounted at the left side and the right side of the mounting panel, the screw rod is a bidirectional threaded rod, the screw rod is inserted into the shaft seat and is rotatably connected with the shaft seat, a first internal thread is horizontally arranged on the left mounting bracket in a penetrating manner, a second internal thread is horizontally arranged on the right mounting bracket in a penetrating manner, and the left mounting bracket and the right mounting bracket are symmetrically arranged; the first internal thread is in threaded fit with the left end of the screw rod, and the second internal thread is in threaded fit with the right end of the screw rod; a first toothed plate is arranged at the other end, away from the screw rod, of the left mounting bracket, a second toothed plate is arranged at the other end, away from the screw rod, of the right mounting bracket, and second semicircular holes which are opposite to each other are respectively formed in the first toothed plate and the second toothed plate; an output shaft of the motor is rotationally connected with the screw rod; the through hole and the second semicircular hole are communicated with each other in a vertically penetrating mode, the through hole is matched with the outer diameter of the mounting end of the needle holder, and the second semicircular hole is matched with a needle seat of the blood taking needle.

Preferably, chucking mechanism includes left splint and right splint, left side splint and right splint with the installation panel is articulated, and the articulated shaft is located respectively the centre of the vertical central line of left side splint and right splint, just left side splint and right splint symmetry set up, the one end of left side splint and right splint is equipped with relative first semicircle hole respectively, relative first semicircle hole constitutes the through-hole.

Preferably, the first toothed plate and the second toothed plate are staggered at an upper interval and a lower interval, one end of the first toothed plate, which is far away from the left mounting bracket, horizontally extends rightwards to form a plurality of teeth, and one end of the second toothed plate, which is far away from the right mounting bracket, horizontally extends leftwards to form a plurality of teeth.

Preferably, the bottom surface of installation panel is connected and is equipped with the guide rail, the guide rail is on a parallel with the lead screw, left side installing support with connect respectively on the right side installing support and be equipped with the slider, the slider with guide rail sliding fit.

Preferably, a sliding groove is formed in the mounting panel, the sliding groove is parallel to the lead screw, push rods are respectively connected to the left mounting bracket and the right mounting bracket, the push rods vertically penetrate through the sliding groove upwards and expose out of the mounting panel, idler wheels are connected to the push rods, the idler wheels are higher than the top surface of the mounting panel, and the idler wheels rotate around the push rods; one ends of the left clamping plate and the right clamping plate, which are far away from the through hole, are connected with torsion springs; when the gyro wheel along during the spout phase motion, the gyro wheel supports tightly respectively left splint and right splint are close to the outside of the one end of torsional spring, left splint and right splint are close to the one end of through-hole is rotatory the opening round articulated axial both sides respectively.

Preferably, one ends of the left clamping plate and the right clamping plate, which are close to the through hole, are respectively connected with first sliding rails, the first sliding rails extend obliquely upwards, and a gap between the left first sliding rail and the right first sliding rail is gradually increased upwards from the bottom end; a second sliding rail is mounted on the top surface of the mounting panel, the second sliding rail is horizontally arranged in a U shape, one end of an opening of the second sliding rail is close to the first sliding rail, and the second sliding rail is arranged right below the first sliding rail; the second slide rail is gradually inclined downwards along one end far away from the opening and is arranged in a bent mode towards the left side or the right side.

Preferably, the rear end of the mounting panel extends vertically downwards to be provided with a vertical plate, the mounting panel inclines downwards, and the included angle between the mounting panel and the vertical plate is set to be 70-85 degrees.

Preferably, the motor is installed on the inner side face, close to the installation panel, of the vertical plate, a driving belt pulley is installed on an output shaft of the motor, a driven belt pulley is installed in the axial middle of the screw rod, and the driving belt pulley is connected with the driven belt pulley through an annular belt.

Preferably, the automatic rear separation device for the blood taking needle and the needle holder further comprises a control main board, a display and a photoelectric detection mechanism, wherein the control main board is respectively connected with the display and the photoelectric detection mechanism; the display is used for displaying the working state of the whole device and the number of the disassembled needle holders and the blood taking needles; the photoelectric detection mechanism is arranged at the top end of the mounting panel and is used for detecting whether a needle holder falls into the through hole; the photoelectric detection mechanism sends a signal that the needle holder falls into the through hole to the control mainboard, the control mainboard sends a starting signal to the motor, the motor is powered on to start, and the motor sends a pulse signal to the control mainboard.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a blood taking needle and needle holder are with back autosegregation device can avoid occupational infection risk, reduce medical personnel intensity of labour, improve work efficiency, improve the medical treatment environment of seeking medical advice, and the security is high and convenient to use.

2. The utility model provides a blood taking needle and needle holder are with back autosegregation device, the device compact structure, convenient to use, design benefit, the energy saving, the chucking mechanism that will install the panel and arrange from top to bottom with revolve the drive mechanism who revolves the mechanism and can accomplish the clamp of needle holder through one set of motor drive lead screw and loosen, and revolve wrong dismantlement and separate the blood taking needle.

3. The utility model provides a blood taking needle and needle holder used rear automatic separation device, which replaces manual operation by an automatic means, the device of the utility model can be operated by one key, namely, only a machine power switch is needed to be pressed, and other operations are not needed; medical personnel are accomplishing behind the blood sampling to the patient of seeing a doctor, the blood taking needle that will have the needle holder directly drops into switch on the utility model discloses on the first slide rail that the device established, in the through-hole of article slip-in chucking mechanism, through-hole department has photoelectric detection mechanism, when detecting that there is the article to handle, motor automatic start, accomplish the separation work to blood taking needle and needle holder in the twinkling of an eye, with this direct contact of having solved operator and contaminated medical equipment, avoided by the possibility of infection and therefore class operation and the occupation disease that brings alleviate, and the high-speed automatic separation of twisting messenger's blood taking needle and needle holder of machine is accomplished in very short time, speed is obviously higher than manually operation, the high efficiency of work has been embodied, it is greatly helpful to improve the environment of seeing a doctor to the medical institution.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the connection between a blood collection needle and a needle holder before and after use;

FIG. 2 is a perspective view of the automatic separating device for the blood collection needle and the needle holder according to the present invention;

FIG. 3 is a perspective view of the automatic separation device after the blood collection needle and the needle holder shown in FIG. 2 are turned 180 degrees to the left;

FIG. 4 is a bottom view of the automatic separation device after the blood collection needle and the needle holder shown in FIG. 2 are used;

FIG. 5 is a left side view of the automatic separation device after the blood collection needle and the needle holder shown in FIG. 2 are used;

fig. 6 is a schematic structural view of the first toothed plate and the second toothed plate for screwing and disassembling the blood taking needle provided by the present invention;

3 FIG. 37 3 is 3 a 3 cross 3- 3 sectional 3 view 3 A 3- 3 A 3 ( 3 rotated 3 180 3 degrees 3 clockwise 3) 3 as 3 shown 3 in 3 FIG. 35 3; 3

100-a blood collection needle; 200-needle holder; 101-a bidirectional needle; 102-a needle seat; 201-a mounting end; 301-upper protective sleeve; 302-lower protective sleeve;

11-mounting a panel; 12-a clamping mechanism; 13-a through hole; 14-a motor; 15-a screw rod; 16-a vertical plate; 18-axle seats; 19-a left mounting bracket; 20-right mounting bracket; 21-a first toothed plate; 22-second toothed plate; 23-a second semicircular hole; 24-left splint; 25-right splint; 26-tooth; 27-a guide rail; 28-a slide block; 29-a chute; 30-a push rod; 31-a roller; 32-torsion spring; 33-a first slide rail; 34-a second slide rail; 35-a driving pulley; 36-a driven pulley; 37-a photodetection mechanism; 38-a first via; 39-chamfer plane.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

A rear automatic separation device for a blood taking needle and a needle holder comprises an installation panel 11, wherein a clamping mechanism 12 is connected to the top surface of the installation panel 11, the clamping mechanism 12 is arranged in parallel with the installation panel 11, one end of the clamping mechanism 12 is provided with a through hole 13, and the through hole 13 penetrates through the installation panel 11 downwards; the bottom surface of the mounting panel 11 is provided with a screwing mechanism, the screwing mechanism comprises a motor 14, a screw rod 15, a shaft seat 18, a left mounting bracket 19 and a right mounting bracket 20, the shaft seat 18 is respectively mounted at the left side and the right side of the mounting panel 11, the screw rod 15 is a bidirectional threaded rod, the screw rod 15 is inserted into the shaft seat 18 and is rotatably connected with the shaft seat 18, a first internal thread is horizontally arranged on the left mounting bracket 19 in a penetrating manner, a second internal thread is horizontally arranged on the right mounting bracket 20 in a penetrating manner, and the left mounting bracket 19 and the right mounting bracket 20 are symmetrically arranged; the first internal thread is in threaded fit with the left end of the screw rod 15, and the second internal thread is in threaded fit with the right end of the screw rod 15; a first toothed plate 21 is arranged at the other end, away from the screw rod 15, of the left mounting bracket 19, a second toothed plate 22 is arranged at the other end, away from the screw rod 15, of the right mounting bracket 20, and opposite second semicircular holes 23 are respectively formed in the first toothed plate 21 and the second toothed plate 22; an output shaft of the motor 14 is rotationally connected with the screw rod 15; the through hole 13 is communicated with the opposite second semicircular hole 23 in a vertical penetrating manner, the through hole 13 is matched with the outer diameter of the cylinder of the needle holder 200, and the second semicircular hole 23 is matched with the needle seat 102 of the blood taking needle 100. The left mounting bracket 19 and the right mounting bracket 20 can be respectively and fixedly connected with a screw nut horizontally, and a first internal thread and a second internal thread are respectively arranged in the screw nuts, so that the connection stability with the screw rod 15 can be enhanced; the upper and lower through first through holes 38 of the mounting panel 11 can be set smaller than the through holes 13 of the clamping mechanism 12, so that the end surface of the needle holder 200 close to the mounting end can be supported by the mounting panel 11, the combined body of the needle holder 200 and the blood taking needle 100 sequentially passes through the through holes 13, the first through holes 38 and the opposite second semicircular holes 23 from top to bottom, so that the clamping mechanism 12 can clamp the outer diameter of the cylinder of the needle holder 200, the needle seat 102 of the blood taking needle 100 falls into the opposite second semicircular holes 23, and the second semicircular holes 23 can also be set to be concave arc-shaped, and the diameter of the second semicircular holes is larger than the outer diameter of; the motor 14 is started to drive the screw rod 15 to rotate, the screw rod 15 is provided with bidirectional threads, so that the left mounting bracket 19 and the right mounting bracket 20 move outwards in the opposite direction along the screw rod 15, the first toothed plate 21 and the second toothed plate 22 are driven by the left mounting bracket 19 and the right mounting bracket 20 to move in the same opposite direction, the needle seat part of the blood taking needle 100 is continuously stirred, the blood taking needle 100 gradually rotates in the loosening direction from the threaded connection part with the needle holder 200, and finally the blood taking needle is separated from the needle holder. The device does not need medical personnel to twist the blood taking needle 100 and the needle holder 200, can separate the blood taking needle 100 and the needle holder 200 automatically, can avoid the blood taking needle 100 to stab the medical personnel's finger, can avoid infecting the risk and leading to the occupational disease of tenosynovitis by the action of twisting hundreds of times every day, and the security is high and convenient to use, can promote medical personnel's work efficiency.

Chucking mechanism 12 includes left splint 24 and right splint 25, left side splint 24 and right splint 25 with installation panel 11 is articulated, and the articulated shaft is located respectively the centre of the vertical central line of left side splint 24 and right splint 25, just left side splint 24 and right splint 25 symmetry set up, the one end of left side splint 24 and right splint 25 is equipped with relative first semicircle hole respectively, relative first semicircle hole constitutes through-hole 13. The other ends of the left clamping plate 24 and the right clamping plate 25, which are far away from the first semicircular holes, can be provided with symmetrical oblique cutting surfaces 39 from the middle to the outside, when the left clamping plate 24 and the right clamping plate 25 are rotated inwards, the oblique cutting surfaces 39 are closed, and the two opposite first semicircular holes are opened outwards; when the lancet 100 is separated from the needle holder 200, the lancet 100 falls into a waste storage box below under the action of gravity, and the needle holder 200 is clamped by the clamping mechanism 12, so that the clamping mechanism 12 is opened, and the needle holder 200 is conveniently taken away.

As shown in fig. 6, the first toothed plate 21 and the second toothed plate 22 are staggered at an upper and lower interval, one end of the first toothed plate 21, which is far away from the left mounting bracket 19, extends rightward and horizontally with the circular arc outer diameter of the second semicircular hole 23 as a starting point and is provided with a plurality of teeth 26, and one end of the second toothed plate 22, which is far away from the right mounting bracket 20, extends leftward and horizontally with the circular arc outer diameter of the second semicircular hole 23 as a starting point and is provided with a plurality of teeth 26. In order to ensure that the blood taking needle 100 is completely separated from the needle holder 200, when the needle holder 200 is clamped, the screw rod 15 rotates to drive the left mounting bracket 19 and the right mounting bracket 20 to horizontally move outwards in the opposite direction along the screw rod 15, so that the first toothed plate 21 and the second toothed plate 22 simultaneously horizontally move towards two sides in the opposite direction, the teeth 26 continuously poke the needle seat part of the blood taking needle 100, the blood taking needle 100 gradually rotates towards the loosening direction from the threaded connection part of the blood taking needle 100 and the needle holder 200, and finally the blood taking needle is separated from the needle holder. Teeth 26 can be evenly arranged at intervals, teeth 26 can be arranged to be respectively inclined along a concave arc shape towards left or right, certain gaps can be arranged between the front and back of the first toothed plate 21 and the second toothed plate 22, and after the blood taking needle 100 is separated from the needle holder, the gaps are larger than the needle seat 102 of the blood taking needle 100, so that the blood taking needle 100 can fall into a waste storage box below. The arrangement of the teeth 26 increases the friction force, which makes it easy to poke the needle seat of the lancet 100, and in this embodiment, the friction part is the teeth 26, or may be in the shape of an uneven prism, which is not limited herein.

As shown in fig. 7, in order to make the horizontal movement of the left mounting bracket 19 and the right mounting bracket 20 more stable, it is preferable that a guide rail 27 is connected to the bottom surface of the mounting panel 11, the guide rail 27 is parallel to the screw rod 15, a slider 28 is respectively connected to the left mounting bracket 19 and the right mounting bracket 20, and the slider 28 is in sliding fit with the guide rail 27.

A sliding groove 29 is formed in the mounting panel 11, the sliding groove 29 is parallel to the screw rod 15, push rods 30 are respectively connected to the left mounting bracket 19 and the right mounting bracket 20, the push rods 30 vertically penetrate through the sliding groove 29 upwards and expose out of the mounting panel 11, rollers 31 are connected to the push rods 30, the rollers 31 are higher than the top surface of the mounting panel 11, and the rollers 31 rotate around the push rods 30; one ends of the left clamping plate 24 and the right clamping plate 25, which are far away from the through hole 13, are connected with a torsion spring 32; when the push rod 30 moves along the sliding groove 29 in opposite directions, the rollers 31 on the left and right sides respectively abut against the outer sides of the ends, close to the torsion spring 32, of the left clamping plate 24 and the right clamping plate 25, and the other ends, close to the through hole 13, of the left clamping plate 24 and the right clamping plate 25 are respectively opened in a rotating mode around the hinge axis. When the motor 14 is started in the forward direction, the screw rod 15 rotates, the left mounting bracket 19 and the right mounting bracket 20 move in opposite directions, the roller 31 respectively abuts against the left clamping plate 24 and the right clamping plate 25, the oblique section 39 abuts against, the torsion spring 32 compresses, the other ends of the left clamping plate 24 and the right clamping plate 25 close to the through hole respectively rotate around the hinge shaft to open towards two sides, and at the moment, the needle holder 200 can fall off from the through hole 13 of the left clamping plate 24 and the right clamping plate 25; when the motor 14 is started reversely, the screw rod 15 rotates, the left mounting bracket 19 and the right mounting bracket 20 move reversely, the rollers 31 on the left side and the right side leave the left clamping plate 24 and the right clamping plate 25 respectively, at the moment, the torsion spring 32 resets, the left clamping plate 24 and the right clamping plate 25 depend on the reset tension of the torsion spring 32, one end of the inclined plane 39 of the left clamping plate 24 and the right clamping plate 25 is loosened outwards, and the other end of the through hole 13 of the left clamping plate 24 and the other end of the through hole 13 of the right clamping plate 25 clamp.

One ends of the left clamping plate 24 and the right clamping plate 25, which are close to the through hole 13, are respectively connected with a first sliding rail 33, the first sliding rails 33 extend obliquely and upwards, and the gap between the left first sliding rail 33 and the right first sliding rail 33 is gradually increased from the bottom end upwards; a second slide rail 34 is mounted on the top surface of the mounting panel 11, the second slide rail 34 is a horizontally placed U-shaped, one end of an opening of the second slide rail 34 is close to the first slide rail 33, and the second slide rail 34 is arranged right below the first slide rail 33; the second slide rail 34 is inclined downwards along an end away from the opening and is bent towards the left side or the right side. The gap between the left and right first slide rails 33 is gradually increased from the bottom to the top, the maximum gap at the top can be set to be smaller than the outer diameter of the cylinder of the needle holder 200, and the combined body of the blood collection needle 100 and the needle holder 200 (with the blood collection needle 100 facing downward) is placed at the top of the left and right first slide rails 33 and slides into the through hole 13 under the action of gravity through the guidance of the first slide rails 33. The gap between the second slide rails 34 can also be set smaller than the outer diameter of the cylinder of the needle holder 200, after the blood collection needle 100 is automatically separated from the needle holder 200, one end of the left clamping plate 24 and one end of the right clamping plate 25 close to the through hole 13 are opened in a rotating manner, and the left first slide rail 33 and the right first slide rail 33 are also opened outwards at the same time, at this time, the needle holder 200 slides into the guide which is inclined downwards and horizontally bent towards one side through the second slide rail 34 under the action of gravity from the opening end of the second slide rail 34, and the needle holder 200 can slide to the tail end of the second slide rail 34.

the rear end of the mounting panel 11 vertically extends downwards to be provided with a vertical plate 16, the mounting panel 11 is inclined downwards, an included angle α between the mounting panel 11 and the vertical plate 16 is set to be 70-85 degrees, the mounting panel 11 is inclined downwards to facilitate the operation of medical staff, the mounting panel 11 and the vertical plate 16 can also be vertical, and the mounting panel 11 and the vertical plate 16 can be obliquely mounted on the shell as a whole so that the mounting panel 11 can be inclined downwards.

In order to make the whole device more compact and the transmission more stable, it is preferable that the motor 14 is mounted on the inner side surface of the vertical plate 112 close to the mounting panel 11, a driving pulley 35 is mounted on an output shaft of the motor 14, a driven pulley 36 is mounted at an axial middle position of the screw rod 15, and the driving pulley 35 and the driven pulley 36 are connected by an endless belt. The transmission between the motor 14 and the lead screw 15 may also be a transmission mechanism such as a gear pair, which is not limited herein.

The automatic rear separating device for the blood taking needle and the needle holder further comprises a control main board, a display and a photoelectric detection mechanism 37, wherein the control main board is respectively connected with the display and the photoelectric detection mechanism; the display is used for displaying the working state of the whole device and the number of the disassembled needle holders and the blood taking needles; the photoelectric detection mechanism 37 is arranged on the top surface of the mounting panel 11, and the photoelectric detection mechanism 37 is used for detecting whether a needle holder falls into the through hole 13; the photoelectric detection mechanism 37 sends a signal that the needle holder falls into the through hole 13 to the control main board, the control main board sends a starting signal to the motor 14, the motor 14 is started by power, and the motor 14 sends a pulse signal to the control main board. The display may be a liquid crystal display, and the photo detection mechanism 37 may be a photo sensor that is secured to the top surface of the mounting panel 11 by a mounting bracket such that the photo sensor is aligned with the entrance of the clamping mechanism 12. I, when the photoelectric detection mechanism 37 detects that the needle holder 200 falls into the through hole 13, the photoelectric detection mechanism sends a signal to the control main board, and the control main board sends a starting signal to the motor 14; the motor 14 is electrified and reversely started, the screw rod 15 rotates, the left mounting bracket 19 and the right mounting bracket 20 reversely and horizontally move, the rollers 31 on the left side and the right side respectively leave the left clamping plate 24 and the right clamping plate 25, the torsion spring 32 resets at the moment, the left clamping plate 24 and the right clamping plate 25 depend on the reset tension of the torsion spring 32, one ends of the inclined cutting surfaces 39 of the left clamping plate 24 and the right clamping plate 25 are outwards loosened, and the other ends of the left clamping plate 24 and the right clamping plate 25, which are close to the through hole 13, clamp the needle holder 200; the left mounting bracket 19 and the right mounting bracket 20 continue to move horizontally in the opposite directions, and the teeth 26 continuously poke the needle seat part of the blood collection needle 100, so that the blood collection needle 100 gradually rotates from the threaded connection part with the needle holder 200 to the loosening direction, finally the blood collection needle 100 is separated from the needle holder 200, the blood collection needle 100 falls into the waste storage box below, and the motor 14 stops rotating in the opposite direction. After the motor 14 is started reversely, a pulse signal is sent to the control main board, the control main board calculates the displacement amount of the horizontal movement of the left mounting bracket 19 and the right mounting bracket 20 to two sides according to the received pulse signal, judges that the motor 14 is started and stopped reversely after the blood taking needle 100 is separated from the needle holder 200, and can also be provided with proximity switches at the terminal positions of two sides of the left mounting bracket 19 and the right mounting bracket 20 for controlling the reverse rotation and stop of the motor 14 after the blood taking needle 100 is separated from the needle holder 200; then the motor 14 is powered on and started in the forward direction, the screw rod 15 rotates, the left mounting bracket 19 and the right mounting bracket 20 respectively move horizontally in opposite directions from two sides, the push rod 30 also moves horizontally in opposite directions along the sliding groove 29, the roller 31 abuts against the left clamping plate 24 and the right clamping plate 25 respectively, the inclined plane 39 abuts against the inclined plane, the torsion spring 32 compresses, the other ends of the left clamping plate 24 and the right clamping plate 25 close to the through hole 13 rotate around the hinge axis to open at two sides respectively, the left first sliding rail 33 and the right first sliding rail 33 are also opened outwards, the forward rotation of the motor 14 stops, at this time, the needle holder 200 slides into the second sliding rail 34, and at this time, the device is in a home. In the same way, the motor 14 sends a pulse signal to the control main board after being started in the forward direction, the control main board calculates the displacement of the left mounting bracket 19 and the right mounting bracket 20 moving horizontally in opposite directions from two sides according to the received pulse signal, and judges that the forward rotation of the motor 14 stops after the other ends of the left clamping plate 24 and the right clamping plate 25 close to the through hole 13 are respectively opened around the hinge shaft to rotate towards two sides, or sets a meeting proximity switch when the left mounting bracket 19 and the right mounting bracket 20 move horizontally in opposite directions to control the forward rotation stop of the motor 14.

In addition, the device can be integrally installed in the shell, a waste storage box can be arranged below the shell, the waste storage box can be arranged right below the through hole 13 and used for collecting the blood taking needle 100 falling after being detached, and the waste storage box can be installed in the shell in a push-pull type drawer mode.

The working principle is as follows:

1. the device is in an in-situ waiting state, at the moment, the left mounting bracket 19 and the right mounting bracket 20 are respectively positioned at the middle part of the screw rod 15, namely, the nearest in-situ position, the second semicircular holes 23 of the first toothed plate 21 and the second toothed plate 22 are positioned in positive opposition, the rollers 31 at the left side and the right side respectively abut against the left clamping plate 24 and the right clamping plate 25, the inclined cut surfaces 39 abut against, the torsion spring 32 is compressed, the other ends of the left clamping plate 24 and the right clamping plate 25, which are close to the through hole 13, respectively rotate slightly around the hinge axis to open at two sides to the extent that the needle holder 200 can just fall in along the guide of the first sliding rail 33, and at the moment, the maximum gap at the top end of the first sliding rail 33 is;

2. the blood taking needle and the needle holder are screwed together by thread fit all the time from the beginning of blood taking to the completion of blood taking, after the blood taking and sampling are successful, the blood taking needle 100 and the needle holder 200 (with the blood taking needle 100 facing downwards) which are connected together after being used are placed at the top end of a first sliding rail 33 of the device, the combined body sequentially passes through a through hole 13, a first through hole 38 and a second semicircular hole 23 which are opposite to the through hole from top to bottom under the action of gravity through the guidance of the first sliding rail 33, the photoelectric detection mechanism 37 detects that the needle holder 200 falls into the through hole 13 and sends a signal to a control main board, and the control main board sends a starting signal to the motor 14.

3. The motor 14 is electrified and reversely started, the screw rod 15 rotates, the left mounting bracket 19 and the right mounting bracket 20 reversely and horizontally move, the rollers 31 on the left side and the right side respectively leave the left clamping plate 24 and the right clamping plate 25, the torsion spring 32 resets at the moment, the left clamping plate 24 and the right clamping plate 25 rely on the reset tension of the torsion spring 32, one ends of the inclined cutting surfaces 39 of the left clamping plate 24 and the right clamping plate 25 are outwards loosened, and the other ends of the left clamping plate 24 and the right clamping plate 25, which are close to the through hole 13, clamp the needle holder 200.

4. The left mounting bracket 19 and the right mounting bracket 20 continue to move horizontally in opposite directions, and the teeth 26 continuously poke the needle seat of the blood collection needle 100, so that the blood collection needle 100 gradually rotates from the threaded connection with the needle holder 200 to the loosening direction, finally the blood collection needle 100 is separated from the needle holder 200, the blood collection needle 100 falls into the waste storage box below, and the motor 14 stops.

5. The motor 14 is powered on and started in the forward direction, the screw rod 15 rotates, the left mounting bracket 19 and the right mounting bracket 20 respectively move horizontally in opposite directions from two sides, the push rod 30 also moves horizontally in opposite directions along the sliding groove 29, the roller 31 tightly abuts against the left clamping plate 24 and the right clamping plate 25 respectively, the inclined plane 39 tightly abuts against the inclined plane, the torsion spring 32 compresses, the other ends of the left clamping plate 24 and the right clamping plate 25 close to the through hole 13 are respectively opened in rotation around the hinged shaft to two sides, the left first sliding rail 33 and the right first sliding rail 33 are also opened outwards at the same time, the motor 14 stops, the needle holder 200 slides into the second sliding rail 34, the device is arranged in an in-situ waiting state.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. The automatic rear separating device for the blood taking needle and the needle holder is characterized by comprising an installation panel (11), wherein a clamping mechanism (12) is connected to the top surface of the installation panel (11), the clamping mechanism (12) is arranged in parallel with the installation panel (11), a through hole (13) is formed in one end of the clamping mechanism (12), and the through hole (13) penetrates through the installation panel (11) downwards;

the bottom surface of the mounting panel (11) is provided with a screwing mechanism, the screwing mechanism comprises a motor (14), a screw rod (15), a shaft seat (18), a left mounting bracket (19) and a right mounting bracket (20), the shaft seats (18) are respectively mounted on the left side and the right side of the mounting panel (11), the screw rod (15) is a bidirectional threaded rod, the screw rod (15) is inserted into the shaft seat (18) and is rotatably connected with the shaft seat (18), a first internal thread is horizontally arranged on the left mounting bracket (19) in a penetrating manner, a second internal thread is horizontally arranged on the right mounting bracket (20) in a penetrating manner, and the left mounting bracket (19) and the right mounting bracket (20) are symmetrically arranged; the first internal thread is in threaded fit with the left end of the screw rod (15), and the second internal thread is in threaded fit with the right end of the screw rod (15); a first toothed plate (21) is arranged at the other end, away from the screw rod (15), of the left mounting bracket (19), a second toothed plate (22) is arranged at the other end, away from the screw rod (15), of the right mounting bracket (20), and second semicircular holes (23) which are opposite to each other are respectively formed in the first toothed plate (21) and the second toothed plate (22); an output shaft of the motor (14) is rotationally connected with the screw rod (15);

the through hole (13) and the second semicircular hole (23) are communicated with each other in a vertically penetrating mode, the through hole (13) is matched with the outer diameter of a cylinder of the needle holder (200), and the second semicircular hole (23) is matched with a needle seat (102) of the blood taking needle (100).

2. The device according to claim 1, characterized in that the clamping mechanism (12) comprises a left clamping plate (24) and a right clamping plate (25), the left clamping plate (24) and the right clamping plate (25) are hinged with the mounting panel (11), a hinge shaft is respectively arranged in the middle of the longitudinal center line of the left clamping plate (24) and the right clamping plate (25), the left clamping plate (24) and the right clamping plate (25) are symmetrically arranged, one ends of the left clamping plate (24) and the right clamping plate (25) are respectively provided with a first opposite semicircular hole, and the first opposite semicircular holes form the through hole (13).

3. The device according to claim 1, wherein the first toothed plate (21) and the second toothed plate (22) are staggered from top to bottom at intervals, one end of the first toothed plate (21) far away from the left mounting bracket (19) is provided with a plurality of teeth (26) extending horizontally to the right, and one end of the second toothed plate (22) far away from the right mounting bracket (20) is provided with a plurality of teeth (26) extending horizontally to the left.

4. The device as claimed in claim 1, wherein a guide rail (27) is connected to the bottom surface of the mounting panel (11), the guide rail (27) is parallel to the screw rod (15), a sliding block (28) is respectively connected to the left mounting bracket (19) and the right mounting bracket (20), and the sliding block (28) is in sliding fit with the guide rail (27).

5. The device according to claim 2, wherein a sliding groove (29) is formed in the mounting panel (11), the sliding groove (29) is parallel to the screw rod (15), push rods (30) are respectively connected to the left mounting bracket (19) and the right mounting bracket (20), the push rods (30) vertically penetrate through the sliding groove (29) upwards and expose the mounting panel (11), rollers (31) are connected to the push rods (30), the rollers (31) are higher than the top surface of the mounting panel (11), and the rollers (31) rotate around the push rods (30);

one ends, far away from the through hole (13), of the left clamping plate (24) and the right clamping plate (25) are connected with torsion springs (32);

when push rod (30) along when spout (29) move in opposite directions, the gyro wheel (31) of the left and right sides support tightly respectively left splint (24) and right splint (25) are close to the outside of the one end of torsional spring (32), left splint (24) and right splint (25) are close to the other end of through-hole (13) is rotatory the opening round articulated axial both sides respectively.

6. The device according to claim 2, characterized in that the ends of the left clamping plate (24) and the right clamping plate (25) close to the through hole (13) are respectively provided with a first sliding rail (33), the first sliding rails (33) are arranged to extend obliquely upwards, and the gap between the left first sliding rail (33) and the right first sliding rail (33) is gradually increased from the bottom end upwards;

a second slide rail (34) is mounted on the top surface of the mounting panel (11), the second slide rail (34) is set to be a horizontally placed U-shaped, one end of an opening of the second slide rail (34) is close to the first slide rail (33), and the second slide rail (34) is arranged right below the first slide rail (33);

the second sliding rail (34) is gradually inclined downwards along one end far away from the opening and is bent towards the left side or the right side.

7. the device according to claim 1, characterized in that a vertical plate (16) extends vertically and downwards from the rear end of the mounting panel (11), the mounting panel (11) is inclined downwards, and an included angle α between the mounting panel (11) and the vertical plate (16) is set to be 70-85 degrees.

8. The device according to claim 7, characterized in that the motor (14) is mounted on the inner side surface of the vertical plate (16) close to the mounting panel (11), a driving pulley (35) is mounted on an output shaft of the motor (14), a driven pulley (36) is mounted at the axial middle position of the screw rod (15), and the driving pulley (35) and the driven pulley (36) are connected through an annular belt.

9. The device according to claim 1, further comprising a control main board, a display and a photoelectric detection mechanism (37), wherein the control main board is respectively connected with the display and the photoelectric detection mechanism;

the display is used for displaying the working state of the whole device and the number of the disassembled needle holders and the blood taking needles;

the photoelectric detection mechanism (37) is arranged on the top surface of the mounting panel (11), and the photoelectric detection mechanism (37) is used for detecting whether a needle holder falls into the through hole (13);

the photoelectric detection mechanism (37) sends a signal of the needle holder falling into the through hole (13) to the control main board, the control main board sends a starting signal to the motor (14), the motor (14) is started by power, and the motor (14) sends a pulse signal to the control main board.