CN114798030A

CN114798030A - Conveniently adjust pipettor for inspection of ration liquid

Info

Publication number: CN114798030A
Application number: CN202210453939.8A
Authority: CN
Inventors: 马杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2022-07-29
Also published as: CN111530518B; CN111530518A; CN114887679A

Abstract

The invention relates to the technical field of medical inspection tools, in particular to an inspection pipettor convenient for quantitative liquid adjustment, which comprises a pipetting barrel, a pipetting 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 pipetting barrel is fixedly communicated with the pipetting needle head, scale marks are fixedly arranged on the outer wall of the front side of the pipetting barrel, the upper limiting barrel and the lower limiting barrel which are matched with the pipetting barrel are slidably sleeved on the outer walls of the pipetting barrel, the guide plate and the guide barrel, and the piston is slidably inserted in the pipetting 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.

Description

Conveniently adjust pipettor for inspection of ration liquid

The present application is a divisional application of an invention patent application having an application number of 2020105640635 and entitled quantitative liquid transfer device for medical examination, and having an application date of 2020, 06, 19.

Technical Field

The invention relates to the technical field of medical inspection tools, in particular to an inspection pipette capable of conveniently adjusting quantitative liquid.

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 conveniently adjust pipettor for inspection of ration liquid in order to solve current liquid-transfering device and 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 test pipette which is convenient for adjusting quantitative liquid. 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 liquid transfer device for inspection, which is convenient for adjusting quantitative liquid, comprises a liquid transfer cylinder body, a liquid transfer needle head, a needle head sleeve, a guide cylinder, a push-pull rod, a piston, a limiting plate, an upper limiting cylinder and a lower limiting cylinder, wherein the lower end of the liquid transfer cylinder body is fixedly communicated with the liquid transfer needle head, the liquid transfer needle head is movably sleeved with the 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 and is fixedly connected with a sucker, the outer wall of the front side of the liquid transfer cylinder body is fixedly provided with scale marks, the outer walls of the left side and the right side of the liquid transfer cylinder body are symmetrically and fixedly connected with guide plates, the outer side plate edges of the two guide plates are fixedly connected with the guide cylinder, the outer cylinder wall of the guide cylinder is provided with a sliding groove, the lower end surface of the guide cylinder is lower than the lower end surface of the guide plates, the outer walls of the two sides of the middle part of the needle head sleeve are symmetrically and fixedly connected with two connecting rods perpendicular to the guide plate, the outer side end of the connecting rod is fixedly connected with a T-shaped outer sleeve vertical to the connecting rod, 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 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 mode, the center of the top surface of the piston is fixedly connected with a push-pull rod, the outer wall of the push-pull rod at the upper side of the liquid-transferring cylinder body is fixedly connected with a fixed plate, two guide holes are symmetrically formed in the plate surfaces at the two sides of the push-pull rod, the guide rods are fixed in the plate surfaces at the outer sides of the guide holes, the guide rods are inserted and connected in the guide cylinder body in a sliding mode, the outer wall of the guide plates at the lower ends of the guide plates penetrates through the sliding grooves, the length of the outer side plates, which the sliding grooves is equal to the thickness of the upper limiting cylinders and the lower limiting cylinders, the height of spacing piece equals and upper and lower terminal surface parallel and level between them with the thickness of piston, the equal fixedly connected with gag lever post in the upper end flange 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 pushes away the pull ring after the upper end of push-and-pull rod passes the slip hole, the middle fixedly connected with hooked rod in posterior lateral plate limit of fixed plate, the middle fixedly connected with handle bar in posterior lateral plate limit of limiting plate.

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 liquid-transfering device at the upper side in the liquid-transfering process can be conveniently supported and placed, scale marks 12 are fixedly arranged on the outer wall at the front side of the liquid-transfering barrel 1, guide plates 11 are symmetrically and fixedly connected on the outer wall of the left side and the liquid-transfering barrel 1, guide plates 11 are fixedly connected at the outer plate edges, the guide cylinders 8, a sliding groove 26 is arranged on the outer wall of the guide cylinders 8, 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 of pipetting, and the pipetting can be accurately performed by directly pushing and pulling the piston 28 to the limiting position in the operation process, 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 of the piston 28, the upper end face and the lower end face of the limiting piece 9 are parallel and level, when the piston 28 is pushed or pulled, 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 formed in 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 portion 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 one hand, the hook rod 21 is fixedly connected to the middle portion of the edge of the rear side plate of the fixing plate 15, and the handle rod 22 is fixedly connected to the middle portion of the rear side plate of the limiting plate 18. 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, a rubber sleeve 23 is fixedly sleeved on the handle rod 22. 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 for 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 supported and fixed conveniently, 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 directly reaches the lower end face of the upper limiting cylinder 13 to finish 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 reach the upper end face of the lower limiting cylinder 10 to be limited and prevented, and liquid suction operation can be finished.

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 specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.

Claims

1. The utility model provides a pipettor is used in inspection of convenient adjustment ration liquid, includes moves the liquid barrel, moves liquid syringe needle, syringe needle sleeve, guide cylinder, push-and-pull rod, piston, limiting plate, goes up a spacing section of thick bamboo, lower limiting cylinder, its characterized in that: scale marks are fixedly arranged on the outer wall of the front side of the pipetting barrel body, guide plates are symmetrically and fixedly connected to the outer walls of the left side and the right side of the pipetting barrel body, guide cylinders are fixedly connected to the plate edges of the outer sides of the two guide plates, sliding grooves are respectively arranged on the cylinder walls of the outer sides of the guide cylinders, the lower end faces of the guide cylinders are lower than the lower end faces of the guide plates, upper limiting cylinders and lower limiting cylinders matched with the guide plates are slidably sleeved on the outer walls of the pipetting barrel body, the outer walls of the upper limiting cylinders and the lower limiting cylinders are locked and fixed through locking bolts, pistons are slidably inserted into the pipetting barrel body, push-pull rods are fixedly connected to the centers of the top faces of the pistons, fixed plates are fixedly connected to the outer walls of the push-pull rods on the upper side of the pipetting barrel body, two guide holes are symmetrically arranged on the plate faces on the two sides of the push-pull rods, and guide rods are fixed to the plate faces outside the guide holes and close to the plate edges, the guide rod is inserted in the guide cylinder in a sliding way, the outer wall of the lower end of the guide rod is fixedly connected with a limiting sheet, the outer side plate edge of the limiting sheet passes through the sliding groove, the length of the outer side plate edge exposed out of the sliding groove is equal to the thickness of the cylinder walls of the upper limiting cylinder and the lower limiting cylinder, the height of the limiting piece is equal to the thickness of the piston, the upper end face and the lower end face of the limiting piece are flush, the middle parts of the edges of the upper end plate of the guide plate are fixedly connected with limiting rods, the upper ends of the two limiting rods are respectively and fixedly connected with the two sides of the bottom surface of the limiting plate after penetrating through the guide holes, the center of the limiting plate is fixedly provided with a sliding hole, the left and right side plate edges of the limiting plate are fixedly connected with limiting rings, the height of the barrel body of the lower limiting barrel sleeved on the liquid transferring barrel body and the guide barrel is equal to the height of the limiting sheet, the height of the upper limiting barrel sleeved on the liquid transfer barrel is twice as high as that of the barrel sleeved on the guide barrel and that of the limiting sheet.

2. A test pipette which facilitates adjustment of a fixed amount of liquid according to claim 1, characterized in that: the lower extreme of moving liquid barrel is fixed the intercommunication has the liquid-transfering syringe needle, and the last movable sleeve of liquid-transfering syringe needle has the syringe needle sleeve of T shape, the telescopic lower extreme fixedly connected with bottom plate of syringe needle, the bottom surface arc indent and the fixedly connected with sucking disc of bottom plate, symmetrical fixedly connected with two rather than vertically connecting rod on the telescopic middle part both sides outer wall of syringe needle, the equal fixed connection of outside end of connecting rod rather than the outer sleeve of vertically T shape, the equal movable sleeve in upper end of outer sleeve is at the lower extreme of guide cylinder.

3. A test pipette which facilitates adjustment of a fixed amount of liquid according to claim 1, characterized in that: the upper end of the push-pull rod penetrates through the sliding hole and then is fixedly connected with a push-pull ring, the middle of the rear side plate edge of the fixing plate is fixedly connected with a hook rod, and the middle of the rear side plate edge of the limiting plate is fixedly connected with a handle rod.