A blood drawing device

Abstract

The application relates to the field of medical auxiliary devices, and discloses a blood drawing device. The blood drawing device comprises a bottom plate, a lifting assembly, a stand, a driving piece and a plurality of feeding assemblies. The stand is vertically arranged on the bottom plate. The lifting assembly comprises a lifting disc, a sleeve and a rotating block. The sleeve is sleeved on the stand and can slide along the axial direction of the stand. The driving piece drives the sleeve to rotate. The rotating block is fixedly connected with the sleeve and is in threaded connection with the stand. The lifting disc is fixed with the sleeve. A plurality of fixing sleeves are circumferentially arranged on the lifting disc. The plurality of feeding assemblies are circumferentially arranged on the outer periphery of the lifting disc, and the feeding assemblies are in one-to-one correspondence with the fixing sleeves. The feeding assembly comprises a storage box and a feeding push rod. The storage box is provided with a discharge port opposite to the fixing sleeve. The feeding push rod is aligned with the discharge port and can penetrate through the discharge port. The blood drawing device solves the problem that the discharge of the vacuum blood collection tube is slow when a large number of vacuum blood collection tubes are needed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical auxiliary apparatus, in particular to a blood drawing device. BACKGROUND

[0002] The vacuum blood collection tube is a disposable medical device with negative pressure inside, which can quantitatively collect blood. It is used with a venous blood collection needle during blood drawing. The vacuum blood collection tube has multiple types. The reagent or blood collection volume in different vacuum blood collection tubes is different according to different detection items. Therefore, the appropriate vacuum blood collection tube needs to be selected according to the items to be detected by the patient before blood drawing.

[0003] The traditional selection method is that medical staff manually selects according to the examination sheet. However, the manual selection has large workload and low efficiency. At present, as shown in the patent No. CN201410820743.3, an automatic labeling and dispensing vacuum blood collection tube device is disclosed. The device is provided with a blood collection tube placing rack, a blood collection tube placing rack Y-direction linear motion device, a blood collection tube grabbing claw, a blood collection tube grabbing claw X-direction linear motion device, a blood collection tube grabbing claw Z-direction linear motion device, a labeling device and a blood collection tube dispensing box. The blood collection tube grabbing claw support is fixed on the base platform and above the blood collection tube placing rack and the labeling device. The type or model of the vacuum blood collection tube is automatically selected and identified during blood drawing, and the specified vacuum blood collection tube is dispensed to the specified position.

[0004] However, the above-mentioned vacuum blood collection tube needs to be grabbed by the grabbing claw one by one. When the patient needs to check multiple items and needs multiple vacuum blood collection tubes, the vacuum blood collection tube needs to be taken out for a relatively long time. SUMMARY

[0005] The present application aims to provide a blood drawing device to solve the problem of slow discharge of the vacuum blood collection tube when a large number of vacuum blood collection tubes are needed.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a blood drawing device, comprising a bottom plate, a lifting assembly, a stand, a driving member and a plurality of feeding assemblies. The stand is vertically arranged on the bottom plate. The lifting assembly comprises a lifting disc, a sleeve and a rotating block. The sleeve is sleeved on the stand and can slide along the axial direction of the stand. The driving member drives the sleeve to rotate. The rotating block is fixedly connected with the sleeve and threadedly cooperates with the stand. The lifting disc is fixed with the sleeve. A plurality of fixed sleeves are circumferentially arranged on the lifting disc. The plurality of feeding assemblies are circumferentially arranged on the outer periphery of the lifting disc, and the feeding assemblies correspond to the fixed sleeves one by one. The feeding assembly comprises a storage box and a feeding push rod. The storage box is provided with a discharge port opposite to the fixed sleeve. The feeding push rod is aligned with the discharge port and can penetrate through the discharge port.

[0007] The present application has the following beneficial effects:

[0008] 1. The scheme is provided with a plurality of feeding assemblies, each feeding assembly can push a vacuum blood collection tube into the fixed sleeve, and each feeding assembly is relatively independent, so when multiple different specifications of vacuum blood collection tubes need to be taken out at the same time, multiple feeding assemblies are started at the same time to push out multiple different specifications of vacuum blood collection tubes at the same time, the discharge is rapid, and the number of vacuum blood collection tubes to be taken out is large, which can not cause a longer time to take out all.

[0009] 2. The fixed sleeve in the scheme can still fix the vacuum blood collection tube after all the vacuum blood collection tubes are discharged, which can avoid the vacuum blood collection tube from falling off the workbench and being damaged during blood collection. Secondly, the driving part drives the sleeve and the lifting disc to rotate, which can rotate the vacuum blood collection tube away from the medical staff to the side close to the medical staff, facilitating the medical staff to take off the vacuum blood collection tube.

[0010] Further, the fixed sleeve is rotationally connected with the lifting disc.

[0011] The beneficial effect of the scheme is that when the lifting disc moves upward, the fixed sleeve rotates to a vertical state under the gravity of itself and the vacuum blood collection tube, which facilitates the medical staff to take the vacuum blood collection tube from the fixed sleeve while the medicine in the vacuum blood collection tube flows downward to the bottom of the vacuum blood collection tube.

[0012] Further, a plurality of elastic strips are fixed in the fixed sleeve in the circumferential direction, and the elastic strips extend in the axial direction of the fixed sleeve.

[0013] The beneficial effect of the scheme is that when the vacuum blood collection tube is inserted into the fixed sleeve, the elastic strips can be elastically deformed, thereby increasing the pressure on the vacuum blood collection tube and improving the fixing effect of the vacuum blood collection tube, avoiding the vacuum blood collection tube from slipping off the fixed sleeve.

[0014] Further, an inner cavity is arranged in the column in the axial direction, an outlet opposite to the fixed sleeve is arranged on the side wall of the column, the outlet is communicated with the inner cavity, the end of the fixed sleeve is provided with a through hole opposite to the outlet, and the inner cavity is communicated with a disinfection pipe.

[0015] The beneficial effect of the scheme is that the atomized alcohol can be introduced into the inner cavity through the disinfection pipe, then blown out from the outlet, and then introduced into the fixed sleeve through the through hole to disinfect the sealing plug of the vacuum blood collection tube, so that the blood collection needle will not be contaminated when it penetrates the sealing plug during blood collection, thereby contaminating the sample in the vacuum blood collection tube. Secondly, it can also avoid that the surface of the vacuum blood collection tube is contaminated and the contaminants are brought into the detection chamber to contaminate the detection equipment or other samples.

[0016] Further, the inner cavity is communicated with an evaporation pipe.

[0017] The beneficial effects of the scheme are that the evaporation pipe can ventilate the inner cavity, and the gas can promote alcohol evaporation after flowing through the outlet and the through hole, thereby avoiding the surface of the vacuum blood collection tube from being wet, and causing the vacuum blood collection tube to avoid being too smooth and not easy to take out.

[0018] Further, the lifting unit is sleeved with a shell, and the top of the shell is provided with a taking opening through which the lifting disc slides out.

[0019] The beneficial effects of the scheme are that the shell can shield the stored vacuum blood collection tube and the lifting assembly, and the like, and at the same time, the atomized alcohol blown out of the outlet can also disinfect the inside of the shell, so that the inside of the shell remains clean, thereby further avoiding the vacuum blood collection tube from being contaminated.

[0020] Further, the bottom plate is provided with a discharging cavity below, and the discharging cavity is provided with a guide sliding groove; and the bottom plate is provided with a discharging opening above the guide sliding rail.

[0021] The beneficial effects of the scheme are that the vacuum blood collection tube after blood collection is placed into the shell from the taking opening and can slide downward along the guide sliding groove, thereby facilitating the collection and transfer of the sample to the detection room.

[0022] Further, the discharging opening is provided with a plurality of discharging openings, and the plurality of discharging openings are uniformly distributed along the circumference of the sleeve.

[0023] The beneficial effects of the scheme are that the plurality of discharging openings are more convenient for the vacuum blood collection tube to fall out.

[0024] Further, the bottom plate is provided with a limiting cylinder along the vertical direction, and the discharging opening is located between the limiting cylinder and the sleeve.

[0025] The beneficial effects of the scheme are that the limiting cylinder can limit the vacuum blood collection tube entering the shell, thereby further facilitating the vacuum blood collection tube to fall out of the discharging opening.

[0026] Further, the top of the lifting disc is provided with a placing groove, the opening of the placing groove faces upward, and the inner wall of the placing groove is arc-shaped along the vertical direction.

[0027] The beneficial effects of the present scheme are: the vacuum blood collection tube after blood collection is placed in the placing groove, the placing groove is arranged on the lifting disc, the driving member drives the lifting disc to rotate, the blood collection tube in the placing groove can be driven to rotate, the blood in the blood collection tube and the reagent are mixed, and manual shaking of medical staff is no longer relied on, the workload of the medical staff is reduced, the blood collection speed is improved, especially when the patient needs to be detected more, the medical staff can connect the next vacuum blood collection tube after separating the blood collection needle from the vacuum blood collection tube, and blood collection of the next vacuum blood collection tube is carried out, so that the interval time between two vacuum blood collection tubes can be shorter, the blood collection time is shortened as a whole, the pain of the patient is reduced, and the blood collection efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is an external view of the embodiment of the present application;

[0029] Figure 2 It is a perspective view of the embodiment of the present application;

[0030] Figure 3 It is a distribution schematic view of the feeding assembly in the embodiment of the present application;

[0031] Figure 4 It is a bottom view of Figure 3 ;

[0032] Figure 5 It is a perspective view of the lifting assembly in the embodiment of the present application;

[0033] Figure 6 It is a perspective view of the lifting disc in Figure 5 ;

[0034] Figure 7 It is a front view of the lifting disc in Figure 6 ;

[0035] Figure 8 It is a vertical sectional view of Figure 7 ;

[0036] Figure 9 It is a perspective view of the feeding assembly in Figure 3 ;

[0037] Figure 10 It is a perspective view of the guide chute in the embodiment of the present application. DETAILED DESCRIPTION

[0038] The following is further described in detail through specific embodiments:

[0039] The figure marks in the drawings of the specification include: outer shell 1, inclined plate 11, bracket 12, cover plate 13, collecting port 14, column 2, limiting cylinder 3, storage box 4, guide groove 41, tension spring 42, pressure plate 43, feed push rod 44, discharge port 45, mounting plate 46, bottom plate 5, drop port 51, fixed cylinder 6, guide slide groove 61, lifting plate 7, fixed sleeve 71, placement groove 72, elastic strip 73, sleeve 8, push rod 81, first gear 82, second gear 83, rotating block 84, outlet 85.

[0040] Example

[0041] The embodiment is basically as follows Figures 1 to 10 As shown, a blood drawing device includes a housing 1, within which are disposed a base plate 5, a lifting assembly, a column 2, a drive member, and six feed assemblies. The base plate 5 is horizontally mounted within the housing 1, and the columns 2 are vertically disposed, with the lower ends of the columns 2 penetrating the base plate 5 and extending below the base plate 5. A bracket 12 is bolted to the top of the housing 1, and the upper ends of the columns 2 are bolted to the bracket 12, supporting the columns 2.

[0042] The lifting assembly includes a lifting plate 7, a sleeve 8, and a rotating block 84. The sleeve 8 is mounted on the column 2. The inner diameter of the sleeve 8 is larger than the diameter of the column 2, and the lower end of the sleeve 8 passes through the base plate 5 and extends to the bottom of the base plate 5. The lower end of the sleeve 8 is interference-fitted with a first gear 82. A second gear 83 is vertically provided between the base plate 5 and the bottom of the housing 1. The first gear 82 meshes with the second gear 83. The length of the second gear 83 is determined according to the distance the sleeve 8 needs to move upward, ensuring that the first gear 82 can still mesh with the second gear 83 after the sleeve 8 slides upward to the highest position. The drive member in this embodiment adopts a forward and reverse motor with adjustable speed, and the drive member drives the second gear 83 to rotate.

[0043] The rotating block 84 is cylindrical, and the rotating block 84 is located in the sleeve 8 and is in interference fit with the sleeve 8, and the rotating block 84 is sleeved on the stand 2. The inner wall of the rotating block 84 and the stand 2 are both provided with threads without self-locking effect, and the rotating block 84 is in threaded fit with the stand 2. The sleeve 8 penetrates the lifting disc 7 in the vertical direction and is welded and fixed with the lifting disc 7. The top of the shell 1 is provided with a taking port, the diameter of the taking port is larger than the outer diameter of the lifting disc 7, and the threads on the stand 2 are also higher than the taking port, so as to ensure that the lifting disc 7 can slide out of the taking port upward; at the same time, the top of the threads on the stand 2 is lower than the top of the stand 2, so that after the lifting disc 7 moves upward to above the taking port, the rotating block 84 moves upward to above the threaded position of the stand 2. The shell 1 is provided with a cover plate 13 above, the stand 2 penetrates the cover plate 13 in the vertical direction, and the cover plate 13 is in clearance fit with the stand 2, so that the cover plate 13 can slide downward along the stand 2 under the action of gravity. The outer diameter of the cover plate 13 is larger than the diameter of the taking port, so the cover plate 13 can close the taking port. The top of the lifting disc 7 is welded with a top rod 81 in the vertical direction, and the top rod 81 is sleeved outside the sleeve 8, when the lifting disc 7 slides upward, the top rod 81 pushes the cover plate 13 upward to open the taking port. The top of the lifting disc 7 is provided with a placing groove 72, the opening of the placing groove 72 faces upward, and the side wall of the placing groove 72 is a spherical surface.

[0044] Six through grooves are arranged on the lifting disc 7 in the circumferential direction, and a fixing sleeve 71 is arranged in each through groove. One end of the fixing sleeve 71 is in rotational fit with the lifting disc 7 through a rotating shaft, and when the fixing sleeve 71 is horizontal, the bottom of the fixing sleeve 71 is level with the bottom of the lifting disc 7. A plurality of elastic strips 73 are glued to the inner wall of the fixing sleeve 71 in the circumferential direction. In the embodiment, the elastic strips 73 are made of elastic rubber material, and the elastic strips 73 extend along the circumferential direction of the fixing sleeve 71. One end of the fixing sleeve 71 close to the sleeve 8 is provided with a through hole, and the sleeve 8 is provided with an inner cavity. The sleeve 8 is provided with an outlet 85 communicating with the inner cavity, and the outlet 85 faces the through hole when the fixing sleeve 71 is horizontal. The rotating block 84 is higher than the outlet 85. The lower end of the sleeve 8 is connected with an air inlet pipe through a rotary joint. The air inlet pipe is connected with an evaporation pipe and a disinfection pipe through a three-way valve.

[0045] Six feeding assemblies are distributed along the circumferential direction of the sleeve 8, and the feeding assemblies correspond to the fixing sleeves 71 one by one. The feeding assembly comprises a storage box 4 and a feeding push rod 44. The storage box 4 is vertically arranged, and the lower end of the storage box 4 is provided with a discharge port 45 opposite to the fixing sleeve 71. The feeding push rod 44 is located on the side of the storage box 4 away from the sleeve 8. In the embodiment, the feeding push rod 44 is a linear actuator. The rod of the feeding push rod 44 faces and penetrates the discharge port 45, and pushes the vacuum blood collection tube at the lowermost part of the storage box 4 into the fixing sleeve 71.

[0046] The pressing plate 43 is arranged transversely in the storage box 4, and the two side walls of the pressing plate 43 are integrally formed with connecting plates. The two opposite side walls of the storage box 4 are each provided with a vertically extending guide groove 41, and the connecting plates extend from the guide grooves 41 to the outside of the storage box 4. A tension spring 42 is arranged below the connecting plates, and the bottom of the storage box 4 is connected with a mounting plate 46 through a bolt. The two ends of the tension spring 42 are connected with the connecting plate and the mounting plate 46 respectively, and the vacuum blood collection tubes can be pressed on the bottom of the storage box 4 through the tension spring 42 and the pressing plate 43.

[0047] The limiting cylinder 3 is arranged vertically on the bottom plate 5, and the limiting cylinder, the lifting disc 7, the sleeve 8, the rotating block 84 and the vertical column 2 in the embodiment are coaxial. The inner diameter of the limiting cylinder 3 is larger than the outer diameter of the lifting disc 7, and the side wall of the limiting cylinder 3 is provided with six strip-shaped grooves vertically. The end of the storage box 4 close to the sleeve 8 can be clamped into the strip-shaped groove vertically.

[0048] Six material falling ports 51 are arranged on the bottom plate 5 along the circumference of the sleeve 8. Specifically, the end of the material falling port 51 away from the sleeve 8 is opposite to the inner wall of the limiting cylinder 3. The bottom plate 5 and the inner wall of the material falling port 51 in the embodiment are each covered with a buffer layer made of elastic rubber material, which is used for buffering the falling vacuum blood collection tubes.

[0049] The bottom plate 5 is provided with a fixing cylinder 6 below, and the fixing cylinder 6 is sleeved outside the first gear 82 and the second gear 83 to shield the first gear 82 and the second gear 83. The top and bottom of the fixing cylinder 6 are respectively abutted with the bottom plate 5 and the bottom of the shell 1. The bottom plate 5 is further provided with a guide sliding groove 61 below, and the guide sliding groove 61 in the embodiment is spiral and arranged around the fixing cylinder 6. The material falling port 51 is located directly above the guide sliding groove 61, and the bottom of the shell 1 is further provided with a collecting port 14 opposite to the lower end of the guide sliding groove 61. The outer wall of the shell 1 is welded with an inclined plate, and the end of the inclined plate close to the shell 1 is located directly below the collecting port 14. The end of the inclined plate away from the shell 1 is downwardly inclined and opposite to a conveying belt outside the shell 1, which automatically conveys the vacuum blood collection tubes after blood collection to a detection chamber.

[0050] The specific implementation process is as follows:

[0051] Initially, the lifting disc 7 is located on the bottom plate 5, and the fixed sleeve 71 is horizontal at this time. A plurality of vacuum blood collection tubes of the same type are vertically stored in each storage box 4, and each vacuum blood collection tube is horizontally placed with the sealing plug facing the sleeve 8. In actual implementation, each feeding push rod 44 in the embodiment is controlled by a computer. Before blood collection, the computer determines the corresponding type of vacuum blood collection tube according to the items required to be detected by the patient, and then controls the feeding push rod 44 of the feeding assembly where the vacuum blood collection tube is located to start. The rod body of the feeding push rod 44 is extended to push the lowermost vacuum blood collection tube into the fixed sleeve 71, and then the rod body of the feeding push rod 44 is controlled to reset.

[0052] At this time, the alcohol mist is first introduced into the inner cavity through the sterilization tube, and the alcohol mist is blown out from the outlet 85 and the through hole to sterilize the sealing plug of the vacuum blood collection tube and the outer wall of the vacuum blood collection tube; then the sterilized air is introduced through the evaporation tube to promote the evaporation of the alcohol. At the same time, the driving member is started, and the driving member drives the sleeve 8 to rotate forward through the first gear 82 and the second gear 83 which are engaged with each other, and the sleeve 8 drives the rotating block 84 to rotate. Since the rotating block 84 is threadedly connected with the vertical column 2, the rotating block 84, the sleeve 8 and the lifting disc 7 move upward during the rotation of the rotating block 84. At this time, the first gear 82 also moves upward synchronously relative to the second gear 83.

[0053] When the lifting disc 7 moves away from the bottom plate 5, the fixed sleeve 71 rotates under the action of gravity. When the vacuum blood collection tube rotates to the upper side of the taking opening, the rotation speed of the driving member is reduced, so that the lifting disc 7 rotates slowly, and the vacuum blood collection tube located at the rear side of the vertical column 2 can be taken out conveniently.

[0054] When the top rod 81 abuts against the cover plate 13, the cover plate 13 is pushed upward, so that an opening is formed between the cover plate 13 and the top of the placing groove 72. Therefore, the vacuum blood collection tube after blood collection can be placed into the placing groove 72 through the opening. At this time, the vacuum blood collection tube rotates with the lifting disc 7, and the sample and the reagent in the vacuum blood collection tube are automatically shaken uniformly, and manual shaking is no longer needed.

[0055] After all the blood collection of the patient is completed, the sleeve 8 is driven by the driving member to rotate reversely slowly, so that the sleeve 8 and the lifting disc 7 gradually reset downward. When the collecting groove moves to a certain distance in the shell 1, the rotation speed of the driving member is increased, the speed of the lifting disc 7 moving downward is accelerated, and at the same time, the vacuum blood collection tube is caused to slide out of the collecting groove under the centrifugal force, and then falls on the guide sliding groove 61 through the dropping opening 51, and finally slides downward from the guide sliding groove 61 and falls on the conveying belt outside through the collecting opening 14 and the inclined plate.

[0056] During the whole discharging process, the alcohol blown out from the outlet 85 finally flows out through the dropping opening 51 and the collecting opening 14, so that the structure through which the vacuum blood collection tube after blood collection passes is sterilized, and the vacuum blood collection tube is prevented from being polluted again, so that the detection instrument in the detection chamber and the sample taken out are prevented from being polluted by the vacuum blood collection tube.

[0057] During the blood collection process, since the lifting disc 7 continuously rotates forward slowly, the lifting disc 7 not only mixes the sample and the reagent by driving the vacuum blood collection tube to rotate, but also moves up and down in the vertical direction with a small amplitude, so that the mixing effect of the sample and the reagent is improved.

[0058] The above-mentioned are only embodiments of the present application, and common technical solutions and / or common knowledge of the scheme are not described in detail. It should be pointed out that, for those skilled in the art, without departing from the technical solutions of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the patent. The protection scope claimed in the present application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A blood drawing device, characterized in that: The lifting plate is fixed to the sleeve, and the rotating block is fixed to the sleeve. The lifting plate is circumferentially provided with a plurality of fixed sleeves, and a plurality of feed assemblies are circumferentially provided on the lifting plate. The feed assembly includes a storage box and a feed push rod. The storage box is provided with a discharge port opposite to the fixed sleeve. The feed push rod is aligned with the discharge port and can pass through the discharge port; each feed assembly can push a vacuum blood collection tube of a certain specification into the fixed sleeve.

2. A blood drawing device according to claim 1, characterized in that: The fixed sleeve is rotatably matched with the lifting plate.

3. A blood drawing device according to claim 2, characterized in that: A plurality of elastic strips are fixed in the fixing sleeve along the circumferential direction, and the elastic strips extend along the axial direction of the fixing sleeve.

4. A blood drawing device according to claim 3, characterized in that: An inner cavity is provided in the column along the axial direction, and an outlet facing the fixed sleeve is provided on the side wall of the column. The outlet is connected to the inner cavity, and a through hole facing the outlet is provided at the end of the fixed sleeve; the inner cavity is connected to a disinfection tube.

5. A blood drawing device according to claim 4, characterized in that: The inner cavity is connected to an evaporation tube.

6. The blood drawing device according to claim 5, characterized in that: The outer shell of the lifting unit is provided with a shell, and the top of the shell is provided with a taking-out port for the lifting plate to slide out.

7. A blood drawing device according to claim 6, characterized in that: A discharge cavity is provided below the bottom plate, and a guide slide is provided in the discharge cavity; and a drop opening is provided on the bottom plate and is located above the guide slide.

8. The blood drawing device according to claim 7, characterized in that: There are multiple blanking openings, and the multiple blanking openings are evenly distributed along the circumference of the sleeve.

9. The blood drawing device according to claim 7, characterized in that: A limiting cylinder is vertically provided on the bottom plate, and the blanking opening is located between the limiting cylinder and the sleeve.

10. The blood drawing device according to claim 1, characterized in that: A placement groove is provided on the top of the lifting plate, the opening of the placement groove faces upward, and the inner wall of the placement groove has an arc-shaped cross section along the vertical direction.

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