阅读说明：本技术 一种儿童白血病患者用血液取样装置及其使用方法 (Blood sampling device for children leukemia patients and using method thereof ) 是由 张静 于 2020-07-14 设计创作，主要内容包括：本发明涉及一种儿童白血病患者用血液取样装置及其使用方法,的一次性耗材件包括筒体,筒体的一端连通有针头插接头,在筒体内活动安装有活塞块,活塞块的外侧与套装在筒体内的中心管的内端固定连接,中心管的外侧端部位置开设有螺栓放置孔,在筒体的另一端端部外侧固定安装有限位固定片,在限位固定片上开设有旋转紧固孔,中心管伸出筒体的一端与限位插接片固定连接,旋转紧固孔、螺栓放置孔以及限位插接片与自动控制装置相配合；避免了重复多次抽拉活塞杆造成的危险,降低了危险系数,并且采用控制装置实现旋转电机的启停作业,实现了精准的控制,提供了一个稳定的拉力,该拉力以螺纹的方式缓慢实施,精确度得到大大提高,实现血量的合理控制抽取,具有很好的社会和经济效益。(The invention relates to a blood sampling device for a patient with childhood leukemia and a use method thereof.A disposable consumable part comprises a cylinder body, one end of the cylinder body is communicated with a needle head plug-in connector, a piston block is movably arranged in the cylinder body, the outer side of the piston block is fixedly connected with the inner end of a central tube sleeved in the cylinder body, the outer side end part of the central tube is provided with a bolt placing hole, the outer side of the other end part of the cylinder body is fixedly provided with a limiting fixing piece, the limiting fixing piece is provided with a rotary fastening hole, one end of the central tube extending out of the cylinder body is fixedly connected with a limiting insertion piece, and the rotary fastening hole, the bolt placing hole and; avoided the danger that repeated drawing piston rod caused many times, reduced the danger coefficient to adopt controlling means to realize opening of rotating electrical machines and stop the operation, realized accurate control, provided a stable pulling force, this pulling force is implemented slowly with the mode of screw thread, and the accuracy obtains improving greatly, realizes the reasonable control extraction of blood volume, has fine social and economic benefits.)

1. The utility model provides a children's leukemia patient uses blood sampling device, includes disposable consumptive material spare and with disposable consumptive material spare matched with automatic control device which characterized in that: disposable consumptive material spare include barrel (1), the one end intercommunication of barrel (1) has syringe needle bayonet joint (2), movable mounting has piston piece (5) in barrel (1), the outside of piston piece (5) and the inner fixed connection of the center tube (4) of suit in barrel (1), the outside end position of center tube (4) has been seted up the bolt and has been placed hole (8), there is spacing stationary blade (3) at the other end tip outside fixed mounting of barrel (1), rotatory fastening hole (7) have been seted up on spacing stationary blade (3), one end and spacing insertion sheet (6) fixed connection that barrel (1) is stretched out in center tube (4), rotatory fastening hole (7), hole (8) are placed to the bolt and spacing insertion sheet (6) cooperate with automatic control device.

2. The blood sampling device for pediatric leukemia patients according to claim 1, wherein: the automatic control device comprises a sleeve (9) matched with a rotary fastening hole (7), a bolt placing hole (8) and a limiting insertion sheet (6), wherein a sliding limiting cavity (19) is arranged on the inner side of the sleeve (9), a sliding block (17) is movably arranged in the sliding limiting cavity (19), a limiting insertion sheet insertion groove (20) and a central tube insertion groove (21) are formed in the outer side surface of the sliding block (17), the inner sides of the limiting insertion sheet insertion groove (20) and the central tube insertion groove (21) are communicated with a sliding limiting cavity (18) formed in the sliding block (17), a bolt push rod (16) is sleeved at the center of the sliding block (17), one end of the bolt push rod (16) is movably arranged in the bolt placing hole (8), the other end of the bolt push rod (16) is fixedly connected with the output end of a rotary motor (14), and a rotary fastening bolt head (10) matched with the rotary fastening hole (7) is arranged on one side end surface of ) An outer fixed barrel (11) is sleeved on the outer side of the sleeve (9), a control panel (12) and a battery box (15) are installed on the outer fixed barrel (11), a controller is installed in the control panel (12), and the controller is connected with the battery box (15) and the rotating motor (14) through wires.

3. The blood sampling device for pediatric leukemia patients according to claim 1, wherein: the cylinder body (1) is of a cylindrical hollow cylinder structure, a communicating hole is formed in the center of the bottom of the cylinder body (1), one end of a needle head plug-in connector (2) is communicated with the communicating hole, the needle head plug-in connector (2) is of a cylindrical tubular structure, the inner end of the needle head plug-in connector (2) and the cylinder body (1) are of an integrated structure, a piston block (5) is of a cylindrical block structure, the bottom of the piston block (5) is matched with the bottom wall of the cylinder body (1), a central tube (4) is of a cylindrical structure, one end of the central tube (4) is fixedly installed in the piston block (5), the outer end face of the piston block (5) is provided with a center tube fixing groove for installing a center tube (4), one end of the center tube (4) is fixedly installed in the center tube fixing groove, the length of the center tube (4) is not less than that of the cylinder body (1), and the outer diameter of the center tube (4) is not more than the inner diameter of the cylinder body (1).

4. The blood sampling device for pediatric leukemia patients according to claim 1 or 2, wherein: the bolt place hole (8) for cylindricality poroid structure, the bolt is placed hole (8) and is seted up the outside end central point that sets up in center tube (4) and put, the diameter that the hole (8) was placed to the bolt is not more than the diameter of center tube (4), the degree of depth that the hole (8) was placed to the bolt is not more than the degree of depth of center tube (4), spacing insertion piece (6) are four, four spacing insertion piece (6) are the tip outside of cross-shaped distribution in center tube (4), the length of center tube (4) central point to spacing insertion piece (6) outside end is not less than the diameter of barrel (1).

5. The blood sampling device for pediatric leukemia patients according to claim 1, wherein: the limiting fixing piece (3) is of a circular sheet structure, a central hole of the limiting fixing piece is arranged at the central position of the limiting fixing piece (3), the outer wall of the outer side end of the barrel body (1) is fixedly connected with the inner wall of the central hole of the limiting fixing piece, the diameter of the limiting fixing piece (3) is not less than that of the barrel body (1), the rotary fastening holes (7) are of arc-shaped long-strip hole structures taking the circle center of the limiting fixing piece (3) as the center, the rotary fastening holes (7) are two, the two rotary fastening holes (7) are symmetrically distributed on the limiting fixing piece (3), the slotted hole of each rotary fastening hole (7) is gradually reduced in the clockwise direction, the shapes and sizes of the two rotary fastening holes (7) are equal, and the length from the edge position in the inner side of each rotary fastening hole (7) to the axis of the cylinder body (1) is not less than the length from the edge position in the outer side of the limiting insertion piece (6) to the axis of the central tube (4).

6. The blood sampling device for pediatric leukemia patients according to claim 2, wherein: sleeve (9) be cylindrical tubular structure, the length of sleeve (9) equals with the length of barrel (1), the cuboid cavity structure of slip spacing chamber (19) for seting up at sleeve (9) inner wall, the cross-section of slip spacing chamber (19) is the square, sliding block (17) are the massive structure of cross-section for the square, the external diameter of sliding block (17) and the internal diameter of slip spacing chamber (19) mutually support, the central outer position of sliding block (17) has seted up the screw hole, be provided with the internal thread layer on this screw hole inner wall, bolt push rod (16) suit is in this screw hole, the surface of bolt push rod (16) is provided with this internal thread layer to the complex external thread layer, the external diameter of sleeve (9) is not more than the diameter of spacing stationary blade (3), the length of side of slip spacing chamber (19) is not less than the external diameter of barrel (1).

7. The blood sampling device for pediatric leukemia patients according to claim 2, wherein: the limiting insertion piece inserting grooves (20) are four, four limiting insertion piece inserting grooves (20) are arranged on the outer side face of the end portion of the sliding block (17) in a cross-shaped mode, the central pipe inserting grooves (21) are arranged at the central portions of the four limiting insertion piece inserting grooves (20), the central pipe inserting grooves (21) are of a circular hole-shaped structure, the limiting insertion piece inserting grooves (20) are matched with the limiting insertion pieces (6), the central pipe inserting grooves (21) are matched with the central pipe (4), the sliding limiting cavities (18) are of a cylindrical cavity structure, the diameter of each sliding limiting cavity (18) is not smaller than the length between the outer edges of the corresponding two limiting insertion piece inserting grooves (20), the thickness of each sliding limiting cavity (18) is matched with the thickness of the limiting insertion pieces (6), and the length between the outer edges of the corresponding two limiting insertion piece inserting grooves (20) is not larger than the side length of the sliding block (17).

8. The blood sampling device for pediatric leukemia patients according to claim 2, wherein: the rotary motor (14) is arranged on the outer side of the end part of the sleeve (9) through a rotary motor fixing frame (13), a bolt push rod mounting hole is formed in the position, corresponding to the installation position of the rotary motor (14), of the sleeve (9), and a bolt push rod (16) is sleeved in the bolt push rod mounting hole.

9. The blood sampling device for pediatric leukemia patients according to claim 2, wherein: rotatory fastening bolt head (10) be cylindrical shaft-like structure, rotatory fastening bolt head (10) are two, two rotatory fastening bolt heads (10) symmetric distribution on the lateral surface of sleeve (9) of the spacing chamber of slip (19) outside, the diameter of rotatory fastening bolt head (10) cooperatees with the aperture of rotatory fastening hole (7), outside solid fixed cylinder (11) be annular sleeve structure, the internal diameter of outside solid fixed cylinder (11) cooperatees with the external diameter of sleeve (9), battery case (15) are three, equal movable mounting has storage battery in three battery case (15), battery case (15) and control panel (12) and outside solid fixed cylinder (11) structure as an organic whole.

10. A method of using the blood sampling device for pediatric leukemia patients according to claim 2, comprising: when the disposable barrel is used, the disposable barrel (1) is taken out of the bag, the outer wall of the barrel (1) is held by hands, the end of the limiting insertion sheet (6) is inserted into the sleeve (9), the limiting insertion sheet (6) is aligned with the limiting insertion sheet insertion groove (20) and the central pipe insertion groove (21), the whole limiting insertion sheet (6) is inserted into the sliding limiting cavity (18), at the moment, the rotary fastening bolt head (10) falls into the rotary fastening hole (7) formed in the limiting fixing sheet (3), after the rotary fastening bolt head (10) and the limiting insertion sheet (6) are installed in place, the barrel (1) is rotated, the rotary fastening bolt head (10) is rotated from the initial position of the rotary fastening hole (7) along the forming direction of the rotary fastening hole (7), and after the rotary fastening bolt head (10) is contacted with the end position of the rotary fastening hole (7), the rotation of the barrel (1) is stopped, at the moment, the limiting insertion sheet (6) is fixed and limited in the sliding limiting cavity (18), when blood sampling operation is needed, one side of the needle head insertion head (2) is connected with a blood taking needle through a medical thin hose, then blood sampling operation is carried out, the amount of blood drawing is set through the control panel (12), after the blood drawing amount is set, a controller in the control panel (12) drives the rotating motor (14) to rotate, the rotating motor (14) drives the bolt push rod (16) to rotate, when the bolt push rod (16) rotates, the sliding block (17) moves towards the installation direction of the rotating motor (14) in the sliding limiting cavity (19), when the sliding block (17) moves, the limiting insertion sheet (6) drives the central tube (4) to move, the central tube (4) drives the piston block (5) to move, when the piston block (5) moves, the piston block (5) and the inner wall of the barrel body (1) form a negative pressure area, blood enters the negative pressure area from the blood vessel, when the blood volume reaches the set blood volume of the control panel (12), the rotating motor (14) stops rotating, the blood volume reaches the set volume, and the blood sampling operation is completed.

Technical Field

The invention relates to the field of medicine, in particular to a blood sampling device for a patient with childhood leukemia and a using method thereof.

Background

Leukemia is a malignant clonal disease of hematopoietic stem cells. Clonal leukemia cells proliferate and accumulate in bone marrow and other hematopoietic tissues in large quantities due to mechanisms such as uncontrolled proliferation, differentiation disorder, apoptosis blockage, etc., infiltrate other non-hematopoietic tissues and organs, and inhibit normal hematopoietic function. Different degrees of anemia, bleeding, infectious fever, and swelling of the liver, spleen, lymph nodes and bone pain are seen clinically.

Blood sampling is often performed during treatment of leukemia patients, and blood sampling is performed during the initial examination, the middle treatment and the later review. The prevalence rate of the childhood leukemia is gradually increasing at present, and a certain specificity exists in blood sampling examination of childhood leukemia patients. When sampling and blood drawing are carried out on a patient with child leukemia, the blood to be sampled is various, including whole blood, component blood and other blood products, because the blood vessel of the child is thin, the whole wall is thin, and the pressure inside the blood vessel is limited, in the process of drawing blood by adopting the injector, the piston rod is often pulled still when the injector is directly used for drawing blood from the vein, even if the piston rod is pulled up with great effort, the blood cannot be drawn out when the piston is pulled up, the reason is that the pressure difference between the inside and the outside of the injector is large, the piston can be drawn out after being pulled up again after sliding down by releasing the hand, but certain danger exists in repeated operation, needle running or blood vessel puncture is easily caused by pulling the piston rod twice, particularly, the blood vessel of the child is thin, and once the phenomenon of puncture and penetration occurs, the consequence is serious. In addition, in the process of drawing blood with the traditional syringe, the accurate control of the blood volume is difficult to realize, so that more blood is taken, and the loss is brought to a patient.

Therefore, the blood sampling device for the children leukemia patients and the use method thereof have wide market prospect, and are simple in structure, convenient to operate, high in safety coefficient, labor-saving, time-saving, accurate in control, efficient, quick, simple and easy to operate.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the blood sampling device for the children leukemia patients and the using method thereof, which have the advantages of simple structure, convenience in operation, high safety factor, labor and time saving, accurate control, high efficiency and rapidness, simple using method and easiness in operation, and are used for overcoming the defects in the prior art.

The technical scheme of the invention is realized as follows: the utility model provides a children's leukemia patient uses blood sampling device, include disposable consumptive material spare and with disposable consumptive material spare matched with automatic control device, disposable consumptive material spare include the barrel, the one end intercommunication of barrel has the syringe needle bayonet joint, movable mounting has the piston piece in the barrel, the outside of piston piece and the inner fixed connection of the center tube of suit in the barrel, the outside end position of center tube has seted up the bolt and has placed the hole, there is spacing stationary blade at the other end tip outside fixed mounting of barrel, rotatory fastening hole has been seted up on spacing stationary blade, the one end and the spacing insertion piece fixed connection that the barrel was stretched out to the center tube, rotatory fastening hole, the hole is placed to the bolt and spacing insertion piece cooperatees with automatic control device.

The automatic control device comprises a sleeve matched with a rotary fastening hole, a bolt placing hole and a limiting insertion sheet, wherein a sliding limiting cavity is arranged at the inner side of the sleeve, a sliding block is movably arranged in the sliding limiting cavity, a limiting insertion sheet insertion groove and a central pipe insertion groove are formed in the outer side surface of the sliding block, the inner sides of the limiting insertion sheet insertion groove and the central pipe insertion groove are communicated with the sliding limiting cavity arranged in the sliding block, a bolt push rod is sleeved at the center of the sliding block, one end of the bolt push rod is movably arranged in the bolt placing hole, the other end of the bolt push rod is fixedly connected with the output end of a rotary motor, a rotary fastening bolt head matched with the rotary fastening hole is arranged on one side end surface of the sleeve, an outer fixing barrel is sleeved at the outer side of the sleeve, a control panel and a, the controller is connected with the battery box and the rotating motor through wires.

The barrel be cylindrical hollow tubular structure, bottom central point at the barrel puts and is provided with the intercommunicating pore, the one end and this intercommunicating pore of syringe needle bayonet joint are linked together, the syringe needle bayonet joint is cylindrical tubular structure, the inner and barrel structure as an organic whole of syringe needle bayonet joint, the piston block is cylindrical massive structure, the bottom of piston block and the diapire of barrel cooperate, the center tube is cylindrical structure, the one end fixed mounting of center tube is in the piston block, terminal surface outside the piston block is provided with the center tube fixed slot that is used for installing the center tube, the one end fixed mounting of center tube is in this center tube fixed slot, the length of center tube is not less than the length of barrel, the external diameter of center tube is.

The bolt place the hole and put for cylindricality poroid structure, the bolt is placed the hole and is seted up the outside end central point of center tube and put, the diameter that the hole was placed to the bolt is not more than the diameter of center tube, the degree of depth that the hole was placed to the bolt is not more than the degree of depth of center tube, spacing inserted sheet is four, four spacing inserted sheets are the crisscross form and distribute in the tip outside of center tube, the length of center tube central point to spacing inserted sheet outside end is not less than the diameter of barrel.

The limiting fixing piece is of a circular sheet structure, a limiting fixing piece center hole is formed in the center of the limiting fixing piece, the outer wall of the outer side end of the barrel is fixedly connected with the inner wall of the limiting fixing piece center hole, the diameter of the limiting fixing piece is not smaller than that of the barrel, the rotary fastening holes are of circular arc-shaped long-strip-shaped hole structures taking the circle center of the limiting fixing piece as the center, the number of the rotary fastening holes is two, the two rotary fastening holes are symmetrically distributed on the limiting fixing piece, the slotted hole of each rotary fastening hole is gradually reduced in the clockwise direction, the shape and the size of the two rotary fastening holes are equal, and the length from the edge position in the inner side of each rotary fastening hole to the axis of the barrel.

The sleeve be cylindrical tubular structure, telescopic length equals with the length of barrel, the spacing chamber of slip be the cuboid cavity structure of seting up at the sleeve inner wall, the cross-section in the spacing chamber of slip is the square, the sliding block is that the cross-section is the massive structure of square, the external diameter of sliding block and the internal diameter in the spacing chamber of slip mutually support, put set up threaded hole outside the center of sliding block, be provided with the internal thread layer on this threaded hole inner wall, the bolt push rod suit is in this threaded hole, the surface of bolt push rod be provided with this internal thread layer to the complex external thread layer, telescopic external diameter is not more than the diameter of spacing stationary blade, the length of side in the spacing chamber of slip is not less than the external diameter of barrel.

The spacing insertion piece insertion groove be four, four spacing insertion piece insertion grooves are the crisscross form and set up on the tip lateral surface of sliding block, the center tube insertion groove sets up the central part at four spacing insertion piece insertion grooves, the center tube insertion groove is circular hole column structure, the shape and the spacing insertion piece of spacing insertion piece insertion groove cooperate, the center tube insertion groove cooperatees with the center tube, the spacing chamber of slip is cylindrical cavity structures, the diameter in the spacing chamber of slip is not less than the length between two spacing insertion piece insertion groove outer edges that correspond each other, the thickness in the spacing chamber of slip cooperatees with the thickness of spacing insertion piece, the length between two spacing insertion piece insertion groove outer edges that correspond each other is not more than the length of side of sliding block.

The rotary motor is arranged on the outer side of the end part of the sleeve through a rotary motor fixing frame, a bolt push rod mounting hole is formed in the position, corresponding to the mounting position of the rotary motor, of the sleeve, and the bolt push rod is sleeved in the bolt push rod mounting hole.

The rotary fastening bolt head is of a cylindrical rod-shaped structure, the rotary fastening bolt heads are two, the two rotary fastening bolt heads are symmetrically distributed on one side end face of the sleeve outside the sliding limiting cavity, the diameter of the rotary fastening bolt head is matched with the aperture of the rotary fastening hole, the outer side fixing cylinder is of an annular sleeve structure, the inner diameter of the outer side fixing cylinder is matched with the outer diameter of the sleeve, the battery box is three, the three battery boxes are internally and movably provided with the storage battery packs, and the battery box, the control panel and the outer side fixing cylinder are of an integral structure.

The use method of the blood sampling device for the children leukemia patient comprises the following steps: when in use, the disposable barrel is taken out of the bag, the outer wall of the barrel is held by hands, the end of the limit plug-in sheet is inserted into the sleeve, then the limit plug-in sheet is aligned with the limit plug-in sheet insertion groove and the central tube insertion groove, the whole limit plug-in sheet is plugged into the sliding limit cavity, at the moment, the rotary fastening bolt head falls into the rotary fastening hole arranged on the limit fixing sheet, after the rotary fastening bolt head and the limit plug-in sheet are installed in place, the barrel is rotated, the rotary fastening bolt head is rotated along the arrangement direction of the rotary fastening hole from the initial position of the rotary fastening hole, after the rotary fastening bolt head is contacted with the end position of the rotary fastening hole, the rotation of the barrel is stopped, at the moment, the limit plug-in sheet is fixed and limited in the sliding limit cavity, when blood sampling operation is needed, one side of the needle head is connected with a, set up the volume of drawing blood through control panel, after setting up the volume of drawing blood and accomplishing, controller drive rotating electrical machines in the control panel is rotatory, rotating electrical machines drives the bolt push rod rotatory, when the bolt push rod is rotatory, the sliding block removes towards rotating electrical machines's installation direction in the spacing intracavity that slides, when the sliding block removes, spacing insertion piece drives the center tube and removes, the center tube drives the piston piece and removes, when the piston piece removes, the inner wall of piston piece and barrel forms negative pressure zone, blood gets into negative pressure zone from the blood vessel, when reaching the volume of drawing blood that control panel set for, rotating electrical machines stops rotatoryly, the volume of drawing blood reaches the setting value, accomplish blood sampling operation.

The technical scheme of the invention has the following positive effects: the invention overcomes a plurality of defects in the traditional blood sampling process of leukemia patients, adopts the slow pushing and extracting mode of the sliding nut, can be used in the whole blood, component blood and other blood extracting functions, avoids the occurrence of difficult blood sampling caused by thinner blood vessel, thinner whole wall and limited internal pressure of the blood vessel in the blood sampling process of children, adopts the sliding nut to slowly extract, can provide stable extracting power, lightens the working difficulty of medical personnel, reduces the blood sampling difficulty, avoids the occurrence of piston rod immobility phenomenon when the traditional syringe is directly used for extracting blood from veins, adopts the mechanical pulling mode of the sliding nut, integrally saves the strength of the medical personnel, overcomes the defect of large pressure difference between the inside and the outside of the syringe, and avoids the danger caused by repeatedly pulling the piston rod for a plurality of times, the danger coefficient is reduced, the control device is adopted to realize the starting and stopping operation of the rotating motor, the accurate control is realized, the stable pulling force is provided, the pulling force is slowly implemented in a threaded mode, the accuracy is greatly improved, the reasonable control extraction of the blood volume is realized, and the good social and economic benefits are achieved.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the internal structure of the present invention.

FIG. 3 is a schematic view of a disposable consumable part according to the present invention.

FIG. 4 is a schematic side view of the disposable component of the present invention.

Fig. 5 is a schematic side view of the outer fixed cylinder according to the present invention.

Fig. 6 is a schematic side view of the sleeve of the present invention.

Detailed Description

As shown in fig. 1, 2, 3, 4, 5, 6, a blood sampling device for children leukemia patients comprises a disposable consumable part and an automatic control device matched with the disposable consumable part, wherein the disposable consumable part comprises a barrel body 1, one end of the barrel body 1 is communicated with a needle head plug-in connector 2, a piston block 5 is movably mounted in the barrel body 1, the outer side of the piston block 5 is fixedly connected with the inner end of a central tube 4 sleeved in the barrel body 1, a bolt placing hole 8 is formed in the outer side end position of the central tube 4, a limiting fixing plate 3 is fixedly mounted on the outer side of the other end of the barrel body 1, a rotary fastening hole 7 is formed in the limiting fixing plate 3, one end of the central tube 4 extending out of the barrel body 1 is fixedly connected with the limiting plug-in plate 6, and the rotary fastening hole 7, the bolt placing hole 8 and the limiting plug-in. The automatic control device comprises a sleeve 9 matched with a rotary fastening hole 7, a bolt placing hole 8 and a limiting insertion sheet 6, wherein a sliding limiting cavity 19 is arranged at the inner side of the sleeve 9, a sliding block 17 is movably arranged in the sliding limiting cavity 19, a limiting insertion sheet insertion groove 20 and a central pipe insertion groove 21 are arranged on the outer side surface of the sliding block 17, the inner sides of the limiting insertion sheet insertion groove 20 and the central pipe insertion groove 21 are communicated with a sliding limiting cavity 18 arranged in the sliding block 17, a bolt push rod 16 is sleeved at the central position of the sliding block 17, one end of the bolt push rod 16 is movably arranged in the bolt placing hole 8, the other end of the bolt push rod 16 is fixedly connected with the output end of a rotary motor 14, a rotary fastening bolt head 10 matched with the rotary fastening hole 7 is arranged on one side end surface of the sleeve 9, an outer side fixing, a control panel 12 and a battery box 15 are attached to the outer fixed tube 11, and a controller connected to the battery box 15 and the rotating electric machine 14 through a wire is attached to the control panel 12.

Barrel 1 be cylindrical hollow tube structure, bottom central point at barrel 1 puts and is provided with the intercommunicating pore, the one end of syringe needle bayonet joint 2 is linked together with this intercommunicating pore, syringe needle bayonet joint 2 is cylindrical tubular structure, syringe needle bayonet joint 2's the inner and barrel 1 structure as an organic whole, piston block 5 is cylindrical massive structure, piston block 5's bottom cooperatees with barrel 1's diapire, center tube 4 is cylindrical structure, the one end fixed mounting of center tube 4 is in piston block 5, the terminal surface outside at piston block 5 is provided with the center tube fixed slot that is used for installing center tube 4, the one end fixed mounting of center tube 4 is in this center tube fixed slot, the length of center tube 4 is not less than the length of barrel 1, the external diameter of center tube 4 is not more than the internal. The bolt place hole 8 for cylindricality poroid structure, the bolt is placed hole 8 and is seted up in the outside end central point of center tube 4 and put, the diameter that hole 8 was placed to the bolt is not more than the diameter of center tube 4, the degree of depth that hole 8 was placed to the bolt is not more than the degree of depth of center tube 4, spacing inserted sheet 6 is four, four spacing inserted sheets 6 are the cross-shaped distribution of cross in the tip outside of center tube 4, the length of center tube 4 central point to 6 outside ends of spacing inserted sheet is not less than the diameter of barrel 1.

The limiting fixing piece 3 is of a circular sheet structure, a limiting fixing piece center hole is formed in the center of the limiting fixing piece 3, the outer wall of the outer side end of the barrel body 1 is fixedly connected with the inner wall of the limiting fixing piece center hole, the diameter of the limiting fixing piece 3 is not smaller than that of the barrel body 1, the rotary fastening holes 7 are of a circular arc-shaped long hole-shaped structure with the circle center of the limiting fixing piece 3 as the center, the rotary fastening holes 7 are two, the two rotary fastening holes 7 are symmetrically distributed on the limiting fixing piece 3, the slotted hole of each rotary fastening hole 7 is gradually reduced in the clockwise direction, the shape and the size of each rotary fastening hole 7 are equal, and the length from the edge position in the inner side of each rotary fastening hole 7 to the axis of the barrel body 1 is not smaller than. Sleeve 9 be cylindrical tubular structure, sleeve 9's length equals with barrel 1's length, the spacing chamber of slip 19 for seting up the cuboid cavity structure at sleeve 9 inner wall, the cross-section in the spacing chamber of slip 19 is the square, sliding block 17 is the massive structure of cross-section for the square, sliding block 17's external diameter and the internal diameter in the spacing chamber of slip 19 mutually support, put the screw hole in sliding block 17's central outer position, be provided with the internal thread layer on this screw hole inner wall, 16 suits of bolt push rod are in this screw hole, 16 surfaces of bolt push rod are provided with this internal thread layer to complex external thread layer, sleeve 9's external diameter is not more than the diameter of spacing stationary blade 3, the spacing chamber of slip 19's external diameter that is not less than barrel 1.

The four limiting insertion sheet insertion grooves 20 are arranged on the outer side face of the end portion of the sliding block 17 in a cross shape, the central pipe insertion grooves 21 are arranged at the central portions of the four limiting insertion sheet insertion grooves 20, the central pipe insertion grooves 21 are of circular hole structures, the shapes of the limiting insertion sheet insertion grooves 20 are matched with the limiting insertion sheets 6, the central pipe insertion grooves 21 are matched with the central pipe 4, the sliding limiting cavities 18 are of cylindrical cavity structures, the diameters of the sliding limiting cavities 18 are not smaller than the length between the outer edges of the two corresponding limiting insertion sheet insertion grooves 20, the thickness of the sliding limiting cavities 18 is matched with the thickness of the limiting insertion sheets 6, and the length between the outer edges of the two corresponding limiting insertion sheet insertion grooves 20 is not larger than the side length of 17. The rotary motor 14 is arranged on the outer side of the end part of the sleeve 9 through a rotary motor fixing frame 13, a bolt push rod mounting hole is formed in the position, corresponding to the installation position of the rotary motor 14, of the sleeve 9, and a bolt push rod 16 is sleeved in the bolt push rod mounting hole. The rotary fastening bolt head 10 is of a cylindrical rod-shaped structure, the rotary fastening bolt heads 10 are two, the two rotary fastening bolt heads 10 are symmetrically distributed on one side end face of the sleeve 9 on the outer side of the sliding limiting cavity 19, the diameter of each rotary fastening bolt head 10 is matched with the aperture of the corresponding rotary fastening hole 7, the outer side fixing barrel 11 is of an annular sleeve structure, the inner diameter of the outer side fixing barrel 11 is matched with the outer diameter of the sleeve 9, the battery boxes 15 are three, storage battery packs are movably mounted in the three battery boxes 15, and the battery boxes 15, the control panel 12 and the outer side fixing barrel 11 are of an integral structure.

A method for using the blood sampling device for the children leukemia patient comprises the following steps: when the disposable blood sampling tube is used, the disposable tube body 1 is taken out of the bag, the outer wall of the tube body 1 is held by hands, the end of the limiting insertion sheet 6 is inserted into the sleeve 9, then the limiting insertion sheet 6 is aligned with the limiting insertion sheet insertion groove 20 and the central tube insertion groove 21, the whole limiting insertion sheet 6 is inserted into the sliding limiting cavity 18, at the moment, the rotary fastening bolt head 10 falls into the rotary fastening hole 7 formed in the limiting fixing sheet 3, after the rotary fastening bolt head 10 and the limiting insertion sheet 6 are installed in place, the tube body 1 is rotated, the rotary fastening bolt head 10 is rotated along the forming direction of the rotary fastening hole 7 from the initial position of the rotary fastening hole 7, after the rotary fastening bolt head 10 is contacted with the end position of the rotary fastening hole 7, the rotation of the tube body 1 is stopped, at the moment, the limiting insertion sheet 6 is fixed and limited in the sliding limiting cavity 18, when blood sampling operation is needed, one side of the insertion needle head 2 is connected, then, blood sampling operation is carried out, the amount of blood drawing is set through the control panel 12, after the blood drawing amount is set, a controller in the control panel 12 drives the rotating motor 14 to rotate, the rotating motor 14 drives the bolt push rod 16 to rotate, when the bolt push rod 16 rotates, the sliding block 17 moves towards the installation direction of the rotating motor 14 in the sliding limiting cavity 19, when the sliding block 17 moves, the limiting insertion piece 6 drives the central tube 4 to move, the central tube 4 drives the piston block 5 to move, when the piston block 5 moves, the piston block 5 and the inner wall of the barrel body 1 form a negative pressure area, blood enters the negative pressure area from the blood vessel, when the blood drawing amount set by the control panel 12 is reached, the rotating motor 14 stops rotating, the blood drawing amount reaches the set amount, and the blood sampling operation is completed.

The product is characterized in that when in specific operation: the disposable consumable part is a disposable sterile consumable part, an automatic control device matched with the disposable consumable part is a device for multiple use, firstly, the disposable cylinder body 1 is taken out from a sterile bag, whether the cylinder body 1, the piston block 5, the central tube 4, the limiting fixing piece 3, the limiting insertion pieces 6 and the rotating fastening hole 7 are damaged or not is checked, the sealing performance of the piston block 5 is tested, after the detection is finished, the outer wall of the cylinder body 1 is held by hands, the ends of the limiting insertion pieces 6 are inserted into the sleeve 9, the limiting insertion pieces 6 are four, the four limiting insertion pieces 6 are distributed outside the end part of the central tube 4 in a cross shape, the four limiting insertion piece insertion slots 20 are four, the four limiting insertion piece insertion slots 20 are arranged on the outer side surface of the end part of the sliding block 17 in a cross shape, the central tube insertion slot 21 is arranged at the central part of the four limiting insertion piece insertion slots 20, the central tube insertion groove 21 is of a circular hole-shaped structure, the shape of the limiting insertion piece insertion groove 20 is matched with the limiting insertion piece 6, then the four limiting insertion pieces 6 are aligned to the four limiting insertion piece insertion grooves 20, the end portion of the central tube 4 is aligned to the central tube insertion groove 21, the central tube insertion groove 21 is of a circular hole-shaped structure, the inner diameter of the central tube insertion groove 21 is matched with the outer diameter of the central tube 4, and then the four limiting insertion pieces 6 penetrate through the four limiting insertion piece insertion grooves 20 and are inserted into the sliding limiting cavity 18.

At the moment, the rotary fastening bolt head 10 falls into the rotary fastening hole 7 formed in the limiting fixing piece 3, the rotary fastening hole 7 is of a circular arc-shaped long-strip-shaped structure with the circle center of the limiting fixing piece 3 as the center, the number of the rotary fastening holes 7 is two, the two rotary fastening holes 7 are symmetrically distributed on the limiting fixing piece 3, the slotted hole of each rotary fastening hole 7 is gradually reduced in the clockwise direction, the shapes and the sizes of the two rotary fastening holes 7 are equal, and the length from the edge position in the rotary fastening hole 7 to the axis of the cylinder body 1 is not less than the length from the edge position on the outer side of the limiting insertion piece 6 to. The rotary fastening bolt heads 10 are cylindrical rod-shaped structures, the number of the rotary fastening bolt heads 10 is two, the two rotary fastening bolt heads 10 are symmetrically distributed on one side end face of the sleeve 9 on the outer side of the sliding limiting cavity 19, and the diameter of each rotary fastening bolt head 10 is matched with the aperture of the rotary fastening hole 7.

The cylinder body 1 is rotated, the rotary fastening bolt head 10 is rotated along the opening direction of the rotary fastening hole 7 from the initial position of the rotary fastening hole 7, after the rotary fastening bolt head 10 is contacted with the end position of the rotary fastening hole 7, as the slotted holes of the rotary fastening hole 7 are gradually reduced in the clockwise direction, the outer diameter of the rotary fastening bolt head 10 is contacted with the inner wall of the rotary fastening hole 7 more firmly when the rotary fastening bolt head 10 is screwed, when the cylinder body 1 is not rotated, the rotary fastening bolt head 10 is tightly contacted and positioned with the rotary fastening hole 7, a stable support and a limit are provided for the implementation of a sliding nut, the link is lacked, the whole device cannot be implemented, the link is the important weight of the protection of the patent, after the rotary fastening bolt head 10 and the insertion limit piece 6 are installed in place, the rotation of the cylinder body 1 is stopped, when the cylinder body 1 rotates, the four insertion limit pieces 6 rotate along with the sliding limit cavity 18, because the diameter of the sliding limit cavity 18 is not less than the length between the outer edges of the two corresponding limit insertion pieces insertion grooves 20, the thickness of the sliding limit cavity 18 is matched with the thickness of the limit insertion piece 6, and the length between the outer edges of the two corresponding limit insertion pieces insertion grooves 20 is not more than the side length of the sliding block 17. "therefore, the limit inserting piece 6 is fixedly limited in the sliding limit cavity 18 at this time.

When needs blood sampling operation, be connected one side of syringe needle bayonet joint 2 with the blood taking needle through medical thin hose, medical thin hose adopts aseptic disposable consumptive material, the blood taking needle also is aseptic disposable consumptive material, here embodiment takes medical scalp acupuncture to replace thin hose and blood taking needle in this patent, the incoming end that adopts the scalp acupuncture directly goes syringe needle bayonet joint 2 to be connected, then implement the blood sampling operation, set up the volume of drawing blood through control panel 12, be provided with display screen and control button on the control panel 12, display screen and control button all are connected with the controller through the wire.

After the setting of the blood drawing amount through the display and the control keys is completed, the controller in the control panel 12 drives the rotating motor 14 to rotate, the rotating motor 14 drives the bolt push rod 16 to rotate, when the bolt push rod 16 rotates, the sliding block 17 moves towards the installation direction of the rotating motor 14 in the sliding limit cavity 19, the sliding limit cavity 19 is of a cuboid cavity structure arranged on the inner wall of the sleeve 9, the section of the sliding limit cavity 19 is square, the sliding block 17 is of a block structure with the square section, the outer diameter of the sliding block 17 is matched with the inner diameter of the sliding limit cavity 19, therefore, under the principle of a sliding nut, the sliding block 17 realizes bidirectional movement along the bolt push rod 16,

when the sliding block 17 moves, the limiting insertion sheet 6 drives the central tube 4 to move, after the motor is started, the sliding block 17 is set to move towards the direction of the rotating motor 14 along the bolt push rod 16, drawing operation is realized, the central tube 4 drives the piston block 5 to move, when the piston block 5 moves, the piston block 5 and the inner wall of the barrel body 1 form a negative pressure area, blood enters the negative pressure area from the blood vessel, when the blood drawing amount set by the control panel 12 is reached, the rotating motor 14 stops rotating, the blood drawing amount reaches the set amount, and blood sampling operation is completed.

When the blood that needs will draw is pushed out, can take to rotate the barrel 1 from the interior reverse operation of sleeve 9 and take out, then implement manual push rod operation center tube 4, perhaps with motor direction rotary engine motor-driven promotion center tube 4 implementation blood go out the liquid operation, the bolt hole 8 of placing has been seted up to the outside end position of this product center tube 4, after disposable consumptive material spare and automatic control device pegged graft in place, the outside end of bolt push rod 16 falls into the bolt and places in the hole 8, realizes the stability of whole product.

The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.