WO2018006519A1

WO2018006519A1 - Pipette set

Info

Publication number: WO2018006519A1
Application number: PCT/CN2016/105506
Authority: WO
Inventors: 马荣华
Original assignee: 江苏科华医疗器械科技有限公司
Priority date: 2016-07-06
Filing date: 2016-11-11
Publication date: 2018-01-11
Also published as: CN106000497A; CN106000497B

Abstract

Disclosed is a pipette set, comprising a pipette (1), an upper sleeve tube (2), and a solution tube (3). The pipette (1) is composed of a column-shaped main body (11), a liquid communication tube (12) and a siphon head (13). The liquid communication tube (12) extends through the upper and lower ends of the column-shaped main body (11); the top end of the liquid communication tube (12) is higher than an upper surface of the column-shaped main body (11); the bottom of the liquid communication tube (12) is connected with the siphon head (13); the upper part of the column-shaped main body (11) is provided with several first fixing rings (16); the lower part of the column-shaped main body (11) is provided with several second fixing rings (17); the upper sleeve tube (2) is mounted on the upper part of the pipette (1) and is composed of a tapered cap (21) and a connection tube (22); the connection tube (22) is fixed at the bottom of the tapered cap (21); and the solution tube (3) is mounted at the lower part of the pipette (1).

Description

[Name of invention made by ISA according to Rule 37.2] A pipette set

Technical field

The present invention relates to the technical field of medical devices, and in particular to the technical field of dropper sets for use in bedside rapid diagnostic (POCT) testing.

Background technique

Hospitals and laboratories often require micro blood sampling during bedside rapid diagnostic tests. Currently, samples are taken mainly by quantitative capillary tubes, and then the blood samples are added to the test tubes containing the reagents for reaction or dilution, and then by pipetting or quantification. The pipette removes the quantitative reaction solution and adds it to the test strip or the test card. Therefore, it is necessary to take a variety of equipment and complete the sampling dripping operation through multiple steps, the steps are cumbersome, and the experiment and the detection efficiency are low.

Summary of the invention

The object of the present invention is to solve the problems in the prior art, and propose a novel suction pipe set which can improve the efficiency of experiments and detection.

In order to achieve the above object, the present invention provides a novel pipette set, which comprises a suction pipette, an upper casing, and a solution pipe. The suction pipe is composed of a column body, a liquid flow pipe and a siphon head, and the liquid circulation The pipe runs through the upper and lower ends of the column body, the top end of the liquid flow pipe is higher than the upper surface of the column body, the bottom of the liquid flow pipe is connected with a siphon head, the upper part of the column body is provided with a plurality of first fixing rings, and the lower part of the column body is provided with a plurality of a second fixing ring, the upper sleeve is installed on an upper part of the suction pipe, the upper sleeve is composed of a conical cap and a connecting pipe, the connecting pipe is fixed at the bottom of the conical cap, and the connecting pipe is matched with the first fixing ring The first fixing groove is installed in the lower part of the suction pipe, and the solution pipe has a second fixing groove matched with the second fixing ring.

Preferably, the columnar body and the liquid flow tube are of a unitary structure, and a joint portion of the syphon head and the liquid flow tube is located at a lower portion of the liquid flow tube.

Preferably, when the solution tube is not combined with the pipette, the solution tube is filled with a liquid solution, and an aluminum film is sealed on the top.

Preferably, the suction pipe further comprises a ring of limiting rings, and the limiting ring is fixed at the middle of the outer side of the column body.

Preferably, the upper sleeve further comprises an upper retaining ring, the upper retaining ring is fixed at the bottom of the connecting tube, and the upper retaining ring is in close contact with the limiting ring, and the outer diameter of the limiting ring is greater than or equal to the outer diameter of the upper retaining ring.

Preferably, the solution tube further comprises a lower retaining ring, the lower retaining ring is located at the top of the solution tube, and the lower retaining ring is in close contact with the limiting ring, and the outer diameter of the limiting ring is greater than or equal to the outer diameter of the lower retaining ring.

Preferably, the sniffer head portion of the pipette is made of a polymer material, the syphon head is made of glass, the solution tube is made of elastic polyethylene, and the upper sleeve is made of a polymer material.

Preferably, the columnar body has an upper boss at its upper end and a lower boss at a lower end, and the liquid flow pipe extends through the upper boss and the lower boss of the columnar body.

Preferably, the outer portion of the tapered cap is conical, and the inside has a recess corresponding to the shape of the upper boss of the columnar body.

Preferably, a siphon head is connected to the bottom of the liquid flow tube, and a joint portion of the siphon head and the liquid flow tube is located at a lower portion of the liquid flow tube and is located in the lower boss.

Preferably, the solution tube contains a diluent.

Preferably, the columnar body has a lower projection, the siphon head is attached to the lower projection, and the siphon head and the liquid flow tube are spaced apart by a certain distance.

Preferably, the lower end of the syphon head is flush with the lower edge of the lower projection.

The invention has the beneficial effects that the invention provides that the suction pipe is convenient to automatically suck the sample by arranging the syphon head at the bottom of the suction pipe; the inclined arrangement of the upper and lower ends of the column body makes the upper casing and the solution tube fixed firmly, and the column body The sealing has good sealing property; the limiting ring is matched with the upper retaining ring and the lower retaining ring to make the upper casing and the solution pipe have better sealing property; the tapered cap is arranged to facilitate the piercing of the aluminum film on the solution pipe, and is convenient to use. .

Features and advantages of the present invention will be described in detail by the embodiments in conjunction with the accompanying drawings.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following drawings for the embodiments need to be briefly introduced. It is understood that the following drawings are merely illustrative of certain embodiments of the invention and are not intended to Other drawings can be obtained from those skilled in the art without departing from the drawings.

Figure 1 is a front elevational view of a first embodiment of a novel dropper kit of the present invention;

Figure 2 is a front elevational view of a second embodiment of a novel pipette set of the present invention;

Figure 3 is a schematic view of a solution tube of a novel pipette set of the present invention.

In the figure: 1-suction pipette, 2-upper casing, 3-solution pipe, 11-column body, 12-liquid flow pipe, 13-siphon head, 15-limit ring, 16-first fixed ring, 17 - second retaining ring, 21-conical cap, 22-connecting tube, 23-upper retaining ring, 25-first fixing groove, 30-aluminum film, 31-lower ring, 35-second fixing groove, 36- Upper bosses 36, 37 - lower bosses, 38 - housings, 39 - lower projections.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings. It is apparent that the described embodiments are part of the embodiments of the invention, and not all of the embodiments.

Referring to Figure 1, the present invention discloses a first embodiment of a novel pipette set comprising a suction pipette 1, an upper casing 2 and a solution pipe 3. The upper casing 2, the suction pipette 1 and the solution pipe 3 are arranged in the axial direction from top to bottom.

The suction pipette 1 is composed of a columnar body 11, a liquid flow pipe 12, and a syphon head 13, and the liquid flow pipe 12 penetrates the upper and lower ends of the columnar body 11, and the tip end of the liquid flow pipe 12 is higher than the upper surface of the columnar body 11. The upper portion of the columnar body 11 is inclined toward the center of the top of the columnar body 11, and the lower portion of the columnar body 11 is inclined toward the center of the bottom of the columnar body 11. Specifically, the column-shaped main body is divided into upper and lower portions by the limiting ring 15, and the upper portion has a certain taper, and the upper portion is thick and thin, and the lower portion also has a certain taper, and the upper portion is thick and thin. The upper end of the columnar body 11 has an upper boss 36, and the lower end has a lower boss 37. The liquid flow tube 12 penetrates the upper boss 36 and the lower boss 37 of the column body 11, and the diameter of the liquid flow tube 12 is smaller than that of the upper boss 36 and the lower portion. The outer diameter of the boss 37. The columnar body 11 and the liquid flow tube 12 have an integral structure. The columnar body 11 and the liquid flow tube 12 have an integral structure. A syphon head 13 is attached to the bottom of the liquid flow tube 12. The joint portion of the syphon head 13 and the liquid flow tube 12 is located at a lower portion of the liquid flow tube 12 and is located inside the lower boss 37. The wicking head 13 extends beyond the lower boss 37, or alternatively, the lower end of the syphon head 13 is flush with the edge of the lower boss 37. Preferably, the syphon head 13 is inserted into the liquid flow tube 12, and the length of the joint portion of the syphon head 13 and the liquid flow tube 12 is smaller than the height of the lower boss 37.

The upper portion of the columnar body 11 is provided with a plurality of first fixing rings 16, and the lower portion of the columnar body 11 is provided with a plurality of second fixing rings 17, and the number of the first fixing rings 16 is 1-3, preferably two. The number of the second fixed rings 17 may be the same as or different from the number of the first fixed rings 16.

The suction pipe 1 further includes a ring of limiting rings 15 fixed to the outer middle portion of the columnar body 11 and located between the first fixing ring 16 and the second fixing ring 17, the outer diameter of the limiting ring 15 being larger than The outer diameters of the first retaining ring 16 and the second retaining ring 17.

The upper sleeve 2 is mounted on the upper portion of the suction pipette 1. The upper sleeve 2 includes a tapered cap 21 and a connecting pipe 22, and the connecting pipe 22 is fixed to the bottom of the tapered cap 21, and the connecting pipe 22 has a phase opposite to the first fixed ring 16. The first fixing groove 25 is fitted, and the first fixing groove 25 is located at the inner wall of the connecting pipe 22, and the number is the same as the number of the first fixing rings 16. In use, the upper sleeve 2 and the suction pipe 1 are fixedly connected by engaging the first retaining ring 16 in the first fixing groove 25. The outer portion of the tapered cap 21 is conical, and has a recess in the interior corresponding to the shape of the upper boss 36 of the columnar body 11, thereby achieving a sealed connection of the upper sleeve 2 and the suction pipette 1. In another embodiment, the inner wall of the connecting tube 22 is provided with internal threads, the upper portion of the cylindrical body 11 is provided with internal threads, and the upper sleeve 2 and the suction tube 1 are screwed.

The upper sleeve 2 also includes an upper retaining ring 23 that is secured to the bottom of the connecting tube 22. When the upper sleeve 2 and the suction pipette 1 are connected, the upper retaining ring 23 is in close contact with the retaining ring 15 of the suction pipette 1, and the outer diameter of the retaining ring 15 is greater than or equal to the outer diameter of the upper retaining ring 23.

The solution tube 3 is installed in the lower part of the suction pipette 1. The solution pipe 3 has a second fixing groove 35 matched with the second fixing ring 17, and the second fixing groove 35 is located on the inner wall of the solution pipe 3, and the number and the second fixed ring The number of 17 is the same.

Referring to Fig. 2, the present invention also discloses a second embodiment of a novel pipette set. Compared with the first embodiment, the columnar body 11 has a lower protrusion 39, which may have a curved shape and a strip shape. The shape of the siphon head 13 is attached to the lower protrusion 39, and the connection manner can be adopted. Bonding or other means. Further, the syphon head 13 and the liquid flow tube 12 are spaced apart by a certain distance. Preferably, the lower end portion of the syphon head 13 is flush with the lower edge of the lower protrusion 39.

Referring to Fig. 3, the solution tube 3 includes a housing 38, a second retaining ring 17 and an aluminum film 30. The second retaining ring 17 is disposed on the inner wall of the housing 38, and an aluminum film 30 is sealed on the top of the solution tube 3. When the solution tube 3 is not combined with the suction tube 1, the solution tube 3 contains a diluent.

The solution tube 3 further includes a lower retaining ring 31, the lower retaining ring 31 is located at the top of the solution tube 3, and the aluminum film 30 is overlaid on the lower retaining ring 31. When the solution tube 3 and the pipette 1 are connected, the lower ring 31 is in close contact with the limit ring 15, and the outer diameter of the ring 15 is greater than or equal to the outer diameter of the lower ring 31.

The portion of the suction pipette 1 except the syphon head 13 is made of ABS plastic, the syphon head 13 is made of glass, the solution tube 3 is made of low density polyethylene, and the upper sleeve 2 is made of nylon-610.

The working process of the invention:

In the working process, the new suction pipette set disclosed in the present invention takes the blood as a sample, and uses the conical cap 21 to puncture the aluminum film 30 on the solution tube 3, and the siphon head 13 is in contact with the blood, and the blood is siphoned. Next, enter the syphon head 13, then tightly combine the suction pipette 1 with the solution pipe 3, shake the suction pipette 1 so that the blood and the diluent are thoroughly mixed, and when the diluted blood needs to be taken, the upper casing 2 is removed. The suction pipette 1 is inverted, and the solution pipe 3 is squeezed, and the blood sample is dripped from the suction pipette 1. After the use is completed, the upper casing 2 is covered and placed in a refrigerator for storage. It is easy to use throughout the process and the sample is not susceptible to contamination.

In the description of the present invention, it is to be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. The orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is conventionally placed when the invention product is used, for the convenience of describing the present invention and simplifying the description, rather than indicating or implying Pointed device Or the components must have a particular orientation, are constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.

In the description of the present invention, it should be noted that the terms "set", "install", "connected", and "connected" are to be understood broadly, and may be fixed connections, for example, unless otherwise specifically defined and defined. It can also be a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be internal communication between the two elements. The above terms can be understood in the specific case for those of ordinary skill in the art.

The above embodiments are illustrative of the present invention and are not intended to limit the scope of the present invention. Any modifications to the present invention are within the scope of the present invention.

Claims

A novel pipette set characterized in that it comprises a suction pipe (1), an upper casing (2) and a solution pipe (3). The suction pipe (1) is circulated by a column body (11) and a liquid. a tube (12) and a siphon head (13), the liquid flow tube (12) penetrating the upper and lower ends of the column body (11), and the top end of the liquid flow tube (12) is higher than the upper surface of the column body (11). A siphon head (13) is connected to the bottom of the liquid flow tube (12), a plurality of first fixing rings (16) are arranged on the upper portion of the column body (11), and a plurality of second fixing rings (17) are arranged in the lower part of the column body (11). The upper sleeve (2) is mounted on the upper portion of the pipette (1), the upper sleeve (2) is composed of a tapered cap (21) and a connecting tube (22), and the connecting tube (22) is fixed in the tapered shape At the bottom of the cap (21), the connecting tube (22) has a first fixing groove (25) cooperating with the first fixing ring (16), and the solution tube (3) is installed at a lower portion of the suction pipe (1). The solution tube (3) has a second fixing groove (35) that cooperates with the second fixing ring (17).
A novel pipette set according to claim 1, wherein the columnar body (11) and the liquid flow pipe (12) are of an integral structure, and the syphon head (13) and the liquid flow pipe (12) The bonding site is located at the lower portion of the liquid flow tube (12).
A novel pipette set according to claim 1, characterized in that the solution tube (3) is sealed with a suction film (1), and an aluminum film is sealed on the top of the solution tube (3) ( 30).
A novel pipette set according to claim 1, characterized in that the pipette (1) further comprises a ring of limiting rings (15), and the limiting ring (15) is fixed to the column body (11) The middle of the outer side.
A novel pipette set according to claim 4, wherein said upper sleeve (2) further comprises an upper retaining ring (23), and the upper retaining ring (23) is fixed to the connecting tube (22) bottom of, The upper retaining ring (23) is in close contact with the limiting ring (15), and the outer diameter of the limiting ring (15) is greater than or equal to the outer diameter of the upper retaining ring (23).
A novel pipette set according to claim 4, wherein said solution tube (3) further comprises a lower retaining ring (31), and the lower retaining ring (31) is located at the top of the solution tube (3). The lower retaining ring (31) is in close contact with the retaining ring (15), and the outer diameter of the retaining ring (15) is greater than or equal to the outer diameter of the lower retaining ring (31).
A novel pipette set according to any one of claims 1 to 6, characterized in that the portion of the pipette (1) except the siphon head (13) is made of a polymer material, siphon The head (13) is made of glass, the solution tube (3) is made of elastic polyethylene, and the upper sleeve (2) is made of a polymer material.
A novel pipette set according to any one of claims 1-7, characterized in that the upper end of the columnar body (11) has an upper boss (36) and the lower end has a lower boss (37). The liquid flow tube (12) penetrates the upper boss (36) and the lower boss (37) of the columnar body (11).
A novel pipette set according to claim 8, wherein said outer portion of said tapered cap (21) is conical and has an upper boss with said cylindrical body (11) ( 36) The corresponding concave shape of the shape.
A novel pipette set according to claim 8, characterized in that the bottom of the liquid flow pipe (12) is connected with a siphon head (13), and the joint of the siphon head (13) with the liquid flow pipe (12) Located in the lower portion of the liquid flow tube (12) and located in the lower boss (37).
A novel pipette set according to any one of claims 1 to 10, characterized in that the solution tube (3) contains a diluent.
A novel pipette set according to any one of claims 1-11, characterized in that the columnar body (11) has a lower projection (39) to which the siphon head (13) is attached On the projection (39), the siphon head (13) and the liquid flow tube (12) are spaced apart by a certain distance.
A novel pipette set according to claim 12, characterized in that the lower end of the siphon head (13) is flush with the lower edge of the lower projection (39).