阅读说明：本技术 一种医学检验用定量移液装置 (Quantitative liquid transfer device for medical examination ) 是由 马杰 于 2020-06-19 设计创作，主要内容包括：本发明涉及医学检验用具技术领域,尤其是一种医学检验用定量移液装置,包括移液筒体、移液针头、针头套筒、导向筒、推拉杆、活塞、限位板、上限位筒、下限位筒,所述移液筒体的下端固定连通有移液针头,所述移液筒体的前侧外壁上固定设有刻度线,所述移液筒体、导向板、导向筒的外壁上滑动套有与其相匹配的上限位筒和下限位筒,所述移液筒体内滑动插接有活塞。本发明结构设计合理,通过上限位筒和下限位筒的限位,可根据需要精确控制活塞上下移动的范围,直接推拉活塞直到被限位阻止,即可进行精确的定量移液,十分方便,同时通过手柄杆与钩杆的配合可进行吸取操作,通过限位环与推拉环可进行推出操作,可直接单手操作,操作方便。(The invention relates to the technical field of medical inspection tools, in particular to a quantitative liquid transfer device for medical inspection, which comprises a liquid transfer barrel, a liquid transfer needle head, a needle head sleeve, a guide barrel, a push-pull rod, a piston, a limiting plate, an upper limiting barrel and a lower limiting barrel, wherein the lower end of the liquid transfer barrel is fixedly communicated with the liquid transfer needle head, scale marks are fixedly arranged on the outer wall of the front side of the liquid transfer barrel, the outer walls of the liquid transfer barrel, the guide plate and the guide barrel are slidably sleeved with the upper limiting barrel and the lower limiting barrel which are matched with the liquid transfer barrel, and the piston is slidably inserted in the liquid transfer barrel. The invention has reasonable structural design, can accurately control the range of the piston moving up and down according to the requirement by limiting the upper limiting cylinder and the lower limiting cylinder, can directly push and pull the piston until the piston is prevented by limiting, can carry out accurate quantitative liquid transfer, is very convenient, can carry out suction operation by matching the handle rod and the hook rod, can carry out push-out operation by the limiting ring and the push-pull ring, can directly carry out one-hand operation, and is convenient to operate.)

1. The utility model provides a medical science inspection is with ration liquid-transfering device, includes moves the liquid barrel, moves liquid syringe needle, syringe needle sleeve, guide cylinder, push-and-pull rod, piston, limiting plate, go up a spacing section of thick bamboo, lower limiting cylinder, its characterized in that: the lower end of the liquid-transferring barrel is fixedly communicated with a liquid-transferring needle head, a T-shaped needle head sleeve is movably sleeved on the liquid-transferring needle head, the lower end of the needle head sleeve is fixedly connected with a bottom plate, the bottom surface of the bottom plate is concave inwards in an arc shape and is fixedly connected with a sucker, scale marks are fixedly arranged on the outer wall of the front side of the liquid-transferring barrel, guide plates are symmetrically and fixedly connected on the outer walls of the left side and the right side of the liquid-transferring barrel, the outer side plate edges of the two guide plates are fixedly connected with guide cylinders, the outer side cylinder walls of the guide cylinders are respectively provided with a sliding groove, the lower end surface of the guide cylinders is lower than the lower end surface of the guide plates, two connecting rods perpendicular to the guide plates are symmetrically and fixedly connected on the outer walls of the two sides of the middle part of the needle head sleeve, the outer side ends of the connecting rods are respectively fixedly connected with a T-shaped outer sleeve perpendicular, the rear side outer walls of the upper limiting cylinder and the lower limiting cylinder are locked and fixed through locking bolts, a piston is inserted in the pipetting cylinder in a sliding mode, a push-pull rod is fixedly connected to the center of the top surface of the piston, a fixing plate is fixedly connected to the outer wall of the push-pull rod on the upper side of the pipetting cylinder, two guide holes are symmetrically formed in the plate surface of the fixing plate on two sides of the push-pull rod, guide rods are fixed to the positions, close to the plate edges, of the plate surface of the fixing plate on the outer sides of the guide holes, are inserted in the guide cylinders in a sliding mode, limiting pieces are fixedly connected to the outer walls of the lower ends of the guide rods, the outer side plate edges of the limiting pieces penetrate through the sliding grooves, the length of the outer side plate edges of the limiting pieces, which are exposed out of the sliding grooves, is equal to the thickness of the cylinder walls of the upper limiting cylinder and the lower limiting cylinder, the height of the limiting pieces is equal, the fixed slip hole that is equipped with in center department of limiting plate, the equal fixedly connected with spacing ring in the left and right sides flange limit department of limiting plate, its tip fixedly connected with push-and-pull ring after the upper end of push-and-pull rod passes the slip hole, the middle fixedly connected with hook rod in posterior lateral plate limit of fixed plate, the middle fixedly connected with handle bar in posterior lateral plate limit of limiting plate.

2. A quantitative pipetting device for medical examination as recited in claim 1, wherein: the height of the lower limiting cylinder on the liquid transferring cylinder and the guide cylinder is equal to that of the limiting sheet, and the height of the upper limiting cylinder on the liquid transferring cylinder is twice as high as the height of the cylinder on the guide cylinder and the height of the limiting sheet.

3. A quantitative pipetting device for medical examination as recited in claim 1, wherein: the handle rod is fixedly sleeved with a rubber sleeve.

4. A quantitative pipetting device for medical examination as recited in claim 1, wherein: the length of the push-pull rod between the fixed plate and the push-pull ring is twice the length of the pipetting cylinder.

5. A quantitative pipetting device for medical examination as recited in claim 1, wherein: the lower end of the sliding groove is flush with the lower end of the liquid transferring barrel.

6. A quantitative pipetting device for medical examination as recited in claim 1, wherein: the length of the lower end surface of the guide cylinder, which is lower than the lower end surface of the liquid transfer cylinder body, is equal to the height of the lower limiting cylinder.

Technical Field

The invention relates to the technical field of medical examination tools, in particular to a quantitative liquid transfer device for medical examination.

Background

Medical Laboratory (MLS) is a science of performing microbiological, immunological, biochemical, genetic, hematological, biophysical, cytological, etc., tests on materials taken from the human body to provide information for the prevention, diagnosis, treatment of human diseases and assessment of human health. This inspection work requires to use various photoelectric instrument and chemical reagent to accomplish experimental analysis, consequently when medical science inspection, often can use the liquid-transfering device to carry out reagent and sample ration and move and get, traditional liquid-transfering device is mostly burette or injection tube, the unable accurate palm of burette liquid-transfering holds the pressure degree, the volume that too big or the undersize all can lead to moving the liquid has some deviations, need readjustment again, add and subtract the processing, very troublesome, the syringe is got liquid and also needs the fine little dynamics that can master the push-and-pull, it can lead to moving the liquid volume to appear the deviation to be careless slightly, one-hand operation is very inconvenient during the liquid-transfering syringe in addition, need handheld injection tube, one hand pulls push rod and piston backward, it is very inconvenient to operate.

To sum up, this technical scheme provides a medical science inspection is with ration liquid-transfering device in order to solve current liquid-transfering device can not accurately master ration and move liquid, very inconvenient technical problem.

Disclosure of Invention

The invention aims to overcome the technical defects and provide a quantitative pipetting device for medical examination. Through the spacing of last spacing section of thick bamboo and lower spacing section of thick bamboo, the scope that can accurate control piston reciprocated as required, direct push-and-pull piston is up to by spacing stopping, can carry out accurate ration and move the liquid, and is very convenient, can absorb the operation through the cooperation of handle bar and hooked pole simultaneously, can push out the operation through spacing ring and push-and-pull ring, can direct one-hand operation, convenient operation.

The technical scheme adopted by the invention for solving the technical problems is as follows: a quantitative liquid transfer device for medical examination comprises a liquid transfer barrel, a liquid transfer needle head, a needle head sleeve, a guide barrel, a push-pull rod, a piston, a limiting plate, an upper limiting barrel and a lower limiting barrel, wherein the lower end of the liquid transfer barrel is fixedly communicated with the liquid transfer needle head, the liquid transfer needle head is movably sleeved with a T-shaped needle head sleeve, the lower end of the needle head sleeve is fixedly connected with a bottom plate, the bottom surface of the bottom plate is arc-shaped and concave inwards and is fixedly connected with a sucking disc, scale marks are fixedly arranged on the outer wall of the front side of the liquid transfer barrel, guide plates are symmetrically and fixedly connected on the outer walls of the left side and the right side of the liquid transfer barrel, the outer side plate edges of the two guide plates are fixedly connected with the guide barrel, a sliding groove is arranged on the outer side barrel wall of the guide barrel, the lower end surface of the guide barrel is lower than the lower end surface of the guide plates, two connecting, the upper end of the outer sleeve is movably sleeved at the lower end of the guide cylinder, the outer walls of the liquid-transferring cylinder body, the guide plate and the guide cylinder are slidably sleeved with an upper limiting cylinder and a lower limiting cylinder which are matched with the upper limiting cylinder and the lower limiting cylinder, the outer walls of the rear sides of the upper limiting cylinder and the lower limiting cylinder are locked and fixed through locking bolts, a piston is inserted and connected in the liquid-transferring cylinder body in a sliding manner, a push-pull rod is fixedly connected at the center of the top surface of the piston, a fixed plate is fixedly connected on the outer wall of the push-pull rod at the upper side of the liquid-transferring cylinder body, two guide holes are symmetrically formed in the plate surfaces of the fixed plate at the two sides of the push-pull rod, the guide rods are fixedly arranged at the positions close to the plate surfaces outside the guide holes, the guide rods are inserted and connected in the guide cylinder in a sliding manner, a limiting piece is fixedly connected on the outer wall of the lower end of the guide rod, the equal fixedly connected with gag lever post in the upper end flange limit middle part of deflector, its tip difference fixed connection is in the bottom surface both sides of limiting plate behind the guiding hole is passed to the upper end of two gag lever posts, and the fixed slip hole that is equipped with in center department of limiting plate, the equal fixedly connected with spacing ring in the left and right sides flange limit department of limiting plate, its tip fixedly connected with push-and-pull ring after the slip hole is passed to the upper end of push-and-pull rod, the middle fixedly connected with hooked rod in the posterior lateral plate limit of fixed plate, the middle fixedly connected with handle bar in the posterior lateral plate limit of.

Preferably, the height of the lower limiting cylinder sleeved on the liquid transferring cylinder body and the guide cylinder is equal to the height of the limiting piece, and the height of the upper limiting cylinder sleeved on the liquid transferring cylinder body is twice as high as the height of the cylinder sleeved on the guide cylinder and the height of the limiting piece.

Preferably, the handle rod is fixedly sleeved with a rubber sleeve.

Preferably, the length of the push-pull rod between the fixed plate and the push-pull ring is twice as long as that of the pipetting cylinder.

Preferably, the lower end of the sliding groove is flush with the lower end of the pipetting barrel.

Preferably, the length of the lower end surface of the guide cylinder, which is lower than the lower end surface of the liquid transfer cylinder body, is equal to the height of the lower limiting cylinder.

The invention has the beneficial effects that: the invention has reasonable structural design, can accurately control the range of the piston moving up and down according to the requirement by limiting the upper limiting cylinder and the lower limiting cylinder, can directly push and pull the piston until the piston is prevented by limiting, can carry out accurate quantitative liquid transfer, is very convenient, can carry out suction operation by matching the handle rod and the hook rod, can carry out push-out operation by the limiting ring and the push-pull ring, can directly carry out one-hand operation, and is convenient to operate.

Drawings

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

Fig. 2 is a schematic view of a connection structure between a fixing plate and a limiting plate according to the present invention.

Fig. 3 is a schematic bottom structure of the fixing plate of the present invention.

Fig. 4 is a schematic bottom structure of the limiting plate of the invention.

Fig. 5 is a schematic view of the connection structure of the pipetting needle and the needle sleeve of the present invention.

FIG. 6 is a schematic view of a connection structure of the pipette body and the lower limiting cylinder of the present invention.

Fig. 7 is a schematic view of a connection structure of a guide rod and a guide cylinder according to the present invention.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "left side", "right side", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "provided," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be described in detail below with reference to fig. 1 to 7.

As shown in fig. 1 to 7, the invention comprises a liquid-transfering barrel 1, a liquid-transfering needle 2, a needle sleeve 3, a guide cylinder 8, a push-pull rod 16, a piston 28, a limiting plate 18, an upper limiting cylinder 13 and a lower limiting cylinder 10, wherein the lower end of the liquid-transfering barrel 1 is fixedly communicated with the liquid-transfering needle 2, the liquid-transfering needle 2 is movably sleeved with a T-shaped needle sleeve 3, the lower end of the needle sleeve 3 is fixedly connected with a bottom plate 4, the bottom surface of the bottom plate 4 is arc-shaped and concave and is fixedly connected with a sucking disc 5, the sucking disc 5 can make the bottom plate 4 be adsorbed and fixed on an experimental table top, so that the upper liquid-transfering device can be supported and placed conveniently in the liquid-transfering process, the outer wall of the front side of the liquid-transfering barrel 1 is fixedly provided with scale marks 12, the outer walls of the left and right sides of the liquid-transfer, the lower end face of the guide cylinder 8 is lower than the lower end face of the guide plate 11, two connecting rods 7 perpendicular to the connecting rods are symmetrically and fixedly connected to the outer walls of the two sides of the middle part of the needle head sleeve 3, the outer side ends of the connecting rods 7 are fixedly connected to the T-shaped outer sleeve 6 perpendicular to the connecting rods, the upper end of the outer sleeve 6 is movably sleeved at the lower end of the guide cylinder 8, the upper pipetting device can be placed more stably by fixedly sleeving the outer sleeves 6, the outer walls of the pipetting cylinder 1, the guide plate 11 and the guide cylinder 8 are slidably sleeved with the upper limiting cylinder 13 and the lower limiting cylinder 10 matched with the upper limiting cylinder 13 and the lower limiting cylinder 10, the outer walls of the rear sides of the upper limiting cylinder 13 and the lower limiting cylinder 10 are locked and fixed by the locking bolts 27, the scale lines 12 corresponding to the lower end face of the upper limiting cylinder 13 and the upper end face of the lower limiting cylinder 10 can be adjusted as required to control the accurate quantification, the operation is simple and convenient, the quantitative control is convenient, a piston 28 is inserted in the pipetting barrel 1 in a sliding way, a push-pull rod 16 is fixedly connected at the center of the top surface of the piston 28, a fixed plate 15 is fixedly connected on the outer wall of the push-pull rod 16 at the upper side of the pipetting barrel 1, two guide holes 24 are symmetrically arranged on the plate surfaces of the fixed plate 15 at the two sides of the push-pull rod 16, guide rods 14 are fixed at the positions, close to the plate edges, of the plate surfaces of the fixed plate 15 at the outer sides of the guide holes 24, the guide rods 14 are inserted in the guide barrel 8 in a sliding way, a limiting piece 9 is fixedly connected on the outer wall of the lower end of the guide barrel 8, the length of the plate edges at the outer sides of the limiting piece 9, which are exposed out of the sliding grooves 26, is equal to the thickness of the barrel walls of the upper limiting barrel 13 and the lower limiting barrel 10, the height of the limiting piece 9 is equal to the thickness, the push-pull operation can be conveniently carried out, the push-pull force does not need to be finely controlled, the limiting rods 17 are fixedly connected to the middle portions of the edges of the upper end plate of the guide plate 11, the upper ends of the two limiting rods 17 are fixedly connected to the two sides of the bottom surface of the limiting plate 18 respectively after passing through the guide holes 24, the sliding holes 25 are fixedly arranged at the center of the limiting plate 18, the limiting rings 19 are fixedly connected to the edges of the left side plate and the right side plate of the limiting plate 18 respectively, the push-pull ring 20 is fixedly connected to the end portions of the upper end of the push-pull rod 16 after passing through the sliding holes 25, the two fingers are inserted into the limiting rings 19, the thumb is inserted into the push-pull ring 20, the piston 28 can be conveniently pushed by a single hand, the hook rod 21 is fixedly connected to. The handle rod 22 is held by hand, and the hook rod 21 is pulled backwards by one finger, so that the one-hand liquid suction operation can be conveniently carried out, and the operation is convenient.

In this embodiment, the height of the lower limiting cylinder 10 sleeved on the liquid transfer cylinder 1 and the guide cylinder 8 is equal to the height of the limiting piece 9, and the height of the upper limiting cylinder 13 sleeved on the liquid transfer cylinder 1 is twice as high as the height of the upper limiting cylinder 8 sleeved on the guide cylinder and the height of the limiting piece 9. When the piston 28 moves upwards for limiting, the lower end face of the piston 28 is flush with the lower end face of the middle cylinder body of the upper limiting cylinder 13, the upper end faces of the limiting pieces 9 can abut against the lower end faces of the cylinder bodies on the two sides, the limiting and stopping effects can be achieved, and the position of the maximum scale mark 12 pulled upwards can be conveniently adjusted.

In this embodiment, the handle lever 22 is fixedly sleeved with a rubber sleeve 23. The rubber sleeve 23 can be anti-slip and convenient to hold by hand.

In this embodiment, the length of the push-pull rod 16 between the fixing plate 15 and the push-pull ring 20 is twice the length of the pipetting barrel 1. The length is set so that the piston 28 can be moved up to the upper and lower ends of the pipette barrel 1 during pipetting.

In this embodiment, the lower end of the slide groove 26 is flush with the lower end of the pipette barrel 1. When the piston 28 is pushed down to the bottom, the lower end surface of the spacing piece 9 can not be stopped by spacing until the lowest end.

In this embodiment, the length of the lower end surface of the guide cylinder 8 lower than the lower end surface of the pipette barrel 1 is equal to the height of the lower stopper cylinder 10. Lower spacing section of thick bamboo 10 can move down to 8 lower extremes of guide cylinders and need not spacingly, and the convenience is all released the liquid in the liquid-transfering barrel body 1, and when this device supported and was placed, the lower extreme of guide cylinder 8 can be inserted in the outer tube simultaneously, makes the support more firm.

When the liquid suction device is used, the liquid suction needle head 2 and the guide cylinder 8 on the upper side are pulled out from the needle head sleeve 3 and the outer sleeve 6 to perform liquid suction operation, when the liquid suction device is placed in the operation process, the liquid suction needle head can be inserted into the needle head sleeve 3 and the outer sleeve 6 to be conveniently supported and fixed, the lower end face of the upper limiting cylinder 13 can be adjusted to the corresponding scale mark 12 and locked and fixed through the locking bolt 27 according to needs, then the handle rod 22 is held by hand, the hook rod 21 is pulled, the lower end face of the piston 28 is directly connected to the lower end face of the upper limiting cylinder 13 to complete liquid suction operation, when the liquid suction device is pushed out, the upper end face of the lower limiting cylinder 10 can be adjusted to the corresponding scale mark 12 and locked and fixed through the locking bolt 27 according to needs, then a finger is inserted into the limiting ring 19 and the push-pull ring 20 to directly push the lower end face of the piston 28 to.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.