CN219206959U

CN219206959U - Anti-suck-back blood sampler

Info

Publication number: CN219206959U
Application number: CN202320759437.8U
Authority: CN
Inventors: 陈雯雯; 严宏; 戚勇
Original assignee: Wuhan Third Hospital
Current assignee: Wuhan Third Hospital
Priority date: 2023-04-09
Filing date: 2023-04-09
Publication date: 2023-06-20
Anticipated expiration: 2033-04-09

Abstract

The utility model discloses an anti-suck-back blood sampler, which comprises a sampling tube, wherein a sampling needle head is arranged in the middle of one side of the sampling tube, a pull rod is sleeved in the middle of the other side of the sampling tube, a piston is arranged on one side of the pull rod, an adjusting box is arranged on one side of the bottom of the sampling tube, a U-shaped rod is sleeved at the bottom of one side of the sampling tube, and the top of one side of the U-shaped rod extends to the inner side of the adjusting box and is provided with a push block; according to the utility model, through the mutual matching among the threaded rod, the push block, the U-shaped rod, the scale bar, the pointer, the adjusting block, the spring, the positioning block, the guide groove, the inserting rod, the inserting groove and the positioning groove, the position of the adjusting block can be adjusted according to the sampling amount when the device samples blood, and the scale bar can be observed through the pointer during adjustment, so that the adjustment is more convenient and accurate, and the piston can be limited through the adjusting block after the piston is pulled to extract the specified amount of blood, thereby improving the sampling convenience.

Description

Anti-suck-back blood sampler

Technical Field

The utility model relates to the technical field of blood samplers, in particular to an anti-suck-back blood sampler.

Background

Clinical laboratory is a bridge between clinical medicine and basic medicine, and includes clinical chemistry, clinical microbiology, clinical immunology, hematology, humoral and transfusion branch subjects, blood detection is a common detection item of clinical laboratory, and when blood detection is performed, blood needs to be sampled by a blood sampler;

the patent with the prior authorized bulletin number of CN208598413U discloses an anti-suck-back blood sampler for medical clinical laboratory, which is characterized in that the end part of a needle cylinder is connected with a fixed plate, a wedge block capable of moving is arranged on the fixed plate, and a ratchet is arranged on a piston rod, so that the sampler can smoothly pull the piston rod backwards in the blood drawing process, and the piston rod cannot retract under the action of the wedge block and the ratchet, thereby avoiding the suck-back condition of the drawn blood and reducing the pain of a patient;

however, the following disadvantages exist in this device:

when sampling blood, according to different detection items, need draw the blood of different capacities, and above-mentioned device is when taking a sample, is difficult to carry out the restriction to the sampling capacity, leads to needing the sampling personnel to observe continually, and not only sampling efficiency is low, and sampling accuracy is relatively poor moreover.

Disclosure of Invention

The utility model aims to provide a reverse suction prevention blood sampler so as to solve the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a prevent back-suction blood sampler, includes the sampling tube, the middle part of sampling tube one side is provided with the sample syringe needle, the middle part cover of sampling tube opposite side is equipped with the pull rod, one side of pull rod is provided with the piston, one side of sampling tube bottom is provided with the adjustment box, the bottom cover of sampling tube one side is equipped with the U-shaped pole, the top of U-shaped pole one side extends to the inboard of adjustment box and is provided with the ejector pad, the middle part threaded connection of adjustment box one side has the threaded rod, one side and the ejector pad rotation of threaded rod are connected, the top of U-shaped pole one side extends to the inboard of sampling tube and is provided with the adjustment block, one side of adjustment block is provided with the locating piece, the guide slot has been seted up at the middle part of locating piece top and bottom, two sets of being close to with the top and the bottom of inserted bar mutually are provided with the spring, the constant head tank inboard top and bottom are opened the slot with inserted bar matched with, the top of adjustment box one end is provided with the ejector pad, the scale pointer extends to the outside of adjustment box.

Preferably, a pull block is arranged on one side of the pull rod away from the piston, so that the pull rod is conveniently pulled to draw blood.

Preferably, a through groove is formed in the middle of one end of the adjusting box, and the pointer penetrates through the inner side of the through groove and is used for guiding the pointer to enable the pointer to move.

Preferably, the top of one side of the sampling tube is provided with an air outlet hole, so that the air in the sampling tube can be discharged from the air outlet hole when blood is extracted.

Preferably, one side of the threaded rod is provided with a rotary table, so that the threaded rod can be conveniently rotated to be adjusted.

Preferably, the top and the bottom inside the adjusting box are provided with guide grooves, and the inner sides of the guide grooves are connected with guide blocks connected with the push blocks in a sliding manner and used for guiding the push blocks so that the push blocks cannot rotate.

Compared with the prior art, the utility model has the beneficial effects that: this prevent suck-back blood sampler passes through threaded rod, the ejector pad, the U-shaped pole, the scale strip, the pointer, the regulating block, a spring, the locating piece, the guide slot, the inserted bar, mutually support between slot and the constant head tank, make the device when taking a sample to blood, can adjust the position of regulating block according to the sample volume, and the scale is gone up to the accessible pointer observation scale strip during the regulation, make it is more convenient accurate to adjust, follow-up after pulling the piston draws the blood of appointed volume, can carry out spacingly to the piston through the regulating block, the sampling convenience has been promoted, two sets of inserted bars are insertedly in the slot simultaneously, fix the piston, prevent its activity, lead to blood suck-back, influence the safety of blood drawing personnel.

Drawings

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a front cross-sectional view of the present utility model;

FIG. 3 is an enlarged schematic view of the structure A of FIG. 2 according to the present utility model;

fig. 4 is an enlarged schematic view of the structure at B of fig. 2 according to the present utility model.

In the figure: 1. a sampling tube; 2. a pull rod; 3. a piston; 4. a sampling needle; 5. an adjustment box; 6. a threaded rod; 7. a pushing block; 8. a U-shaped rod; 9. a scale bar; 10. a pointer; 11. an adjusting block; 12. a spring; 13. a positioning block; 14. a guide groove; 15. a rod; 16. a slot; 17. and a positioning groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, embodiments of the present utility model are provided: the utility model provides a prevent suck-back blood sampler, including sampling tube 1, sampling tube 1 one side middle part is provided with sampling needle 4, sampling tube 1 one side top is provided with the venthole, make the gas in sampling tube 1 can follow the venthole and discharge when drawing blood, sampling tube 1 opposite side middle part cover is equipped with pull rod 2, one side that pull rod 2 kept away from piston 3 is provided with the pull block, conveniently pull rod 2 draws blood, one side of pull rod 2 is provided with piston 3, sampling tube 1 bottom one side is provided with regulating box 5, regulating box 5 inside top and bottom have seted up the guide way, and the inboard sliding connection of guide way has the guide block that is connected with ejector pad 7, be used for leading to ejector pad 7, make it unable rotation, the logical groove has been seted up at the middle part of regulating box 5 one end, pointer 10 passes from logical inslot side, be used for leading to pointer 10, make it can move about, sampling tube 1 one side bottom cover is equipped with U-shaped 8,U shape pole 8 one side top extend to regulating box 5's inboard and be provided with ejector pad 7;

the middle part threaded connection of adjusting box 5 one side has threaded rod 6, one side of threaded rod 6 is provided with the carousel, make things convenient for rotatory threaded rod 6 to adjust, one side of threaded rod 6 rotates with ejector pad 7 to be connected, the top of U-shaped pole 8 one side extends to the inboard of sampling tube 1 and is provided with regulating block 11, one side of regulating block 11 is provided with locating piece 13, guide slot 14 has been seted up at the middle part of locating piece 13 top and bottom, the inboard slip grafting of two sets of guide slots 14 has inserted bar 15, the top and the bottom that two sets of inserted bar 15 are close to are provided with spring 12, the constant head tank 17 with locating piece 13 looks adaptation has been seted up to the bottom of piston 3 one side, open at the middle part of the inboard top and the bottom of constant head tank 17 has slot 16 with inserted bar 15 matched with, the top of adjusting box 5 one end is provided with scale bar 9, the one end of ejector pad 7 extends to the outside of adjusting box 5 and is provided with pointer 10.

Working principle: the device can insert sample needle 4 in the blood vessel when taking a sample, then pull rod 2 through the pull block, drive piston 3 to one side remove with blood extraction to sampling tube 1 in, before taking a sample, can adjust the position of adjusting block 11 according to the sample volume, during the adjustment, accessible carousel rotates threaded rod 6 and drives threaded rod 6 and remove, then threaded rod 6 drives push block 7 again, accessible push block 7 drives U-shaped pole 8 and removes, and then the position of adjusting block 11, when push block 7 removes again, can drive pointer 10 simultaneously and remove, through observing the position on pointer 10 points to scale 9, be convenient for grasp scale information, after adjusting, can extract blood, when blood extraction reaches the appointed volume, accessible adjusting block 11 carries out spacingly to piston 3, at this moment, the constant head tank 17 can promote in the elasticity automatic guide slot 14 of retrieving of two sets of inserted bars 15 overcoming spring 12, after the locating piece 13 inserts the constant head tank 17 inboard, accessible spring 12 promotes inserted bar 15 reset in slot 16, fix piston 3, can prevent that piston 3 from removing, result in blood backflow.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected" and "connected" are to be construed broadly, and may be either a fixed connection or a removable connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Claims

1. The utility model provides a prevent suck-back blood sampler, includes sampling tube (1), its characterized in that: the middle part of sampling tube (1) one side is provided with sample syringe needle (4), the middle part cover of sampling tube (1) opposite side is equipped with pull rod (2), one side of pull rod (2) is provided with piston (3), one side of sampling tube (1) bottom is provided with adjusting box (5), the bottom cover of sampling tube (1) one side is equipped with U-shaped pole (8), the top of U-shaped pole (8) one side extends to the inboard of adjusting box (5) and is provided with ejector pad (7), the middle part threaded connection of adjusting box (5) one side has threaded rod (6), one side and ejector pad (7) rotation of threaded rod (6) are connected, the top of U-shaped pole (8) one side extends to the inboard of sampling tube (1) and is provided with ejector pad (11), one side of adjusting block (11) is provided with locating piece (13), guide slot (14) are seted up to the middle part of locating piece (13) top and bottom, two sets of guide slot (14) inboard slip grafting has inserted bar (15), two sets of inserted bar (15) and bottom and are provided with spring (17) looks locating piece (13) and are close to one side of locating piece (13), the middle parts of the top and the bottom of the inner side of the positioning groove (17) are provided with slots (16) matched with the inserting rods (15), the top of one end of the adjusting box (5) is provided with a scale bar (9), and one end of the pushing block (7) extends to the outer side of the adjusting box (5) and is provided with a pointer (10).

2. The anti-suck-back blood sampler of claim 1 wherein: one side of the pull rod (2) far away from the piston (3) is provided with a pull block.

3. The anti-suck-back blood sampler of claim 1 wherein: a through groove is formed in the middle of one end of the adjusting box (5), and the pointer (10) penetrates through the inner side of the through groove.

4. The anti-suck-back blood sampler of claim 1 wherein: the top of one side of the sampling tube (1) is provided with an air outlet.

5. The anti-suck-back blood sampler of claim 1 wherein: one side of the threaded rod (6) is provided with a rotary disc.

6. The anti-suck-back blood sampler of claim 1 wherein: guide grooves are formed in the top and the bottom of the inside of the adjusting box (5), and guide blocks connected with the pushing blocks (7) are connected to the inner sides of the guide grooves in a sliding mode.