CN112206930B - Centrifugal blood separator - Google Patents
Centrifugal blood separator Download PDFInfo
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- CN112206930B CN112206930B CN202010946323.5A CN202010946323A CN112206930B CN 112206930 B CN112206930 B CN 112206930B CN 202010946323 A CN202010946323 A CN 202010946323A CN 112206930 B CN112206930 B CN 112206930B
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- rotary drum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B5/00—Other centrifuges
- B04B5/04—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers
- B04B5/0407—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles
- B04B5/0414—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles comprising test tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
- B04B7/08—Rotary bowls
Abstract
The invention discloses a centrifugal blood separation device.A rotary drum is arranged on a rotary table, a plurality of positioning holes are arranged on the inner side wall of the rotary drum, and all the positioning holes are uniformly distributed in a ring-shaped row along the circumferential direction of the inner side wall of the rotary drum at equal intervals; the positioning column is arranged on the turntable, and the axis of the positioning column is positioned on the axis of the rotary drum and is superposed; the lower end face of the positioning rotary disc is rotationally connected with the positioning column through a connecting piece; a limiting block is arranged on the side wall of the centrifugal cylinder; the side wall of the centrifugal cylinder is also provided with a limiting groove, the limiting groove is arc-shaped, and the axis of the arc-shaped groove is in the same direction as the axis of the centrifugal cylinder; a limiting block of the centrifugal cylinder is embedded into a positioning hole at the position of the rotary cylinder, the circular arc concave surface of the limiting groove is matched with the outer edge circumferential surface of the positioning rotary disc, and the centrifugal cylinder is fixed in an annular chamber between the inner wall of the rotary cylinder and the outer wall of the positioning rotary disc. The invention provides a centrifugal blood separation device integrated by a plurality of prefabricated parts, which has simple structure and flexible use.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a centrifugal blood separation device.
Background
The blood component separator is a medical apparatus for separating, removing and collecting various blood components from a donor/patient by a gravity centrifugation method, and comprises a centrifuge, a blood pump, a pressurizing cuff, a weighing assembly, a display screen, a control system and other components. The blood component separator finely transfers different centrifugally layered components such as plasma, platelets, leucocyte layers and the like into a special storage bag through an automatic and digital extrusion device, and then the components are respectively thermally sealed or clamped in corresponding pipelines according to instructions, so that the purpose of component transfer packaging is achieved.
The centrifugal machines used for blood separation in the market at present are various, but the number, the positions and the sizes of groove bodies for placing blood centrifugal tubes in the centrifugal machines are fixed, medical workers selectively place a plurality of blood centrifugal tubes matched with the blood centrifugal tubes in the corresponding groove bodies of the centrifugal machines during centrifugal operation, and the centrifugal machines with different specifications are needed for centrifugal treatment of blood separation tubes with different specifications (including outer diameters and lengths); and centrifuge often runs at a high speed, and in order to ensure stable and safe operation of the centrifuge, blood separation tubes placed in the centrifuge must be symmetrically distributed, so that the number of blood separation tubes processed by one-time centrifugation needs to be determined by the number of groove bodies of the current centrifuge, and the flexibility is poor.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the invention provides a centrifugal blood separation device for solving the problems that centrifuges with different specifications are needed to be used for centrifuging blood separation tubes with different specifications, and the number of the centrifuges for processing the blood separation tubes at one time is limited.
The invention is realized by the following technical scheme:
the centrifugal blood separation device comprises a rotary drum, wherein the rotary drum is arranged on a rotary table, a plurality of positioning holes are formed in the inner side wall of the rotary drum, all the positioning holes are uniformly distributed in a circular ring shape along the circumferential direction of the inner side wall of the rotary drum at equal intervals, and the inner side wall of the rotary drum comprises at least one layer of circular ring-shaped row holes along the axial direction of the rotary drum; the centrifugal machine also comprises a positioning column, a positioning rotary table and a centrifugal cylinder; the positioning column is arranged on the turntable, and the axis of the positioning column is positioned on the axis of the rotary drum and is superposed; the lower end face of the positioning rotary table is rotatably connected with the positioning column through a connecting piece, and the axial direction of the positioning rotary table is superposed with the axial direction of the rotary drum; a limiting block is arranged on the side wall of the centrifugal cylinder; the side wall of the centrifugal cylinder is also provided with a limiting groove, the limiting groove is arc-shaped, and the axis of the arc-shaped groove is in the same direction as the axis of the centrifugal cylinder; the limiting block and the limiting groove are positioned on two radial sides of the centrifugal cylinder; a plurality of centrifuge barrels are evenly distributed along the circumferential direction of the inner wall of the rotary drum at equal intervals, the limiting blocks are embedded into the positioning holes in the positions of the rotary drum, the arc-shaped concave surfaces of the limiting grooves are matched with the outer edge circumferential surface of the positioning rotary disc, the centrifuge barrels are fixed in an annular cavity chamber between the inner wall of the rotary drum and the outer wall of the positioning rotary disc, and blood centrifuge tubes are arranged in the centrifuge barrels.
The number, the positions and the sizes of the groove bodies for placing the blood centrifugal tubes in the centrifuge are fixed, and when the medical staff carries out centrifugal operation, a plurality of blood centrifugal tubes matched with the blood centrifugal tubes are selectively placed in the corresponding groove bodies of the centrifuge, and the centrifuges with different specifications are needed for the centrifugal treatment of the blood separation tubes with different specifications and sizes (including the outer diameter and the length); and centrifuge often runs at a high speed, and in order to ensure stable and safe operation of the centrifuge, blood separation tubes placed in the centrifuge must be symmetrically distributed, so that the number of blood separation tubes processed by one-time centrifugation needs to be determined by the number of groove bodies of the current centrifuge, and the flexibility is poor.
Based on the above background, the present invention provides a centrifugal blood separation device, which has a simple structure and high flexibility. The invention is a centrifugal blood separating device integrated by a plurality of prefabricated parts, wherein the rotary disc and the rotary drum are used as fixing parts of the centrifugal machine, and blood separating tubes with different specifications and sizes only need to select corresponding centrifugal drums and positioning rotary discs without replacing parts with high cost, such as a driving mechanism, the rotary disc, the rotary drum and the like, of the centrifugal machine core.
The centrifugal cylinder is detachably fixed in the centrifuge by matching a limiting block with the rotary cylinder and matching a limiting groove with the positioning rotary disc, the centrifugal cylinder is arranged in an annular chamber between the inner wall of the positioning rotary disc and the outer wall of the rotary cylinder, a plurality of positioning holes which are uniformly distributed in the circumferential direction of the inner wall of the rotary cylinder at equal intervals are formed in the rotary cylinder, and a certain positioning hole can be randomly selected by the limiting block to be matched with the positioning hole; the outer edge arc surface of the positioning rotary disc is matched with the limiting groove of the centrifugal cylinder, and any position of the outer edge circumferential surface of the positioning rotary disc can be matched with the limiting groove, so that the installation position of the centrifugal cylinder can be continuously and randomly adjusted in the annular chamber between the rotary drum and the positioning rotary disc instead of the existing limited adjustment of the dispersion vertex. Two or more centrifugal cylinders with any number can be installed in one centrifugation, such as 3, 4, 5, 6, 7, 8, etc., as long as any even number or odd number of centrifugal cylinders are distributed in a circular array by taking the axis of the rotating cylinder as the center.
The blood centrifuge tubes have different outer diameters, and centrifuge tubes with corresponding inner diameters can be selected; and if the outer diameters of the centrifugal cylinders are different, selecting a positioning rotary table with the corresponding outer diameter, wherein the larger the outer diameter of the positioning rotary table is, the smaller the annular chamber between the positioning rotary table and the rotary cylinder is, and the smaller the outer diameter of the positioning rotary table is, the larger the annular chamber between the positioning rotary table and the rotary cylinder support is.
Further preferably, the limiting block is embedded into the positioning hole at the position of the rotary drum in an interference fit mode.
The limiting blocks are directly embedded into the positioning holes, so that the structure is simple, and the disassembly and assembly operation is convenient.
Preferably, two layers of circular ring-shaped row holes are arranged on the inner side wall of the rotary drum in the axial direction of the rotary drum, and the positioning holes of the two adjacent layers of circular ring-shaped row holes are arranged in a staggered manner; the centrifugal cylinder is characterized in that three limiting blocks are arranged on the side wall of the centrifugal cylinder, and the three limiting blocks are arranged to form a regular triangle structure.
When the centrifugal cylinder is used, one positioning hole at the upper layer and two positioning holes at the lower layer can form one positioning hole unit, three positioning holes in the positioning hole unit are in a regular triangle structure, and then three limiting blocks on the centrifugal cylinder are correspondingly embedded into the three positioning holes in the positioning hole unit for fixing, so that the stability of a connecting structure is guaranteed.
Preferably, the lower end face of the positioning rotary disc is provided with a shaft sleeve; one axial end of the connecting piece extends into the shaft sleeve and is rotationally connected with the shaft sleeve through a bearing; the other end of the connecting piece is detachably connected with the positioning column.
The outer edge circumferential surface of the positioning rotary table is matched with the limiting groove of the centrifugal cylinder, the positioning rotary table is rotatably connected with the connecting piece through the shaft sleeve, synchronous rotating motion of the rotary cylinder, the centrifugal cylinder and the positioning rotary table is guaranteed, and then the positioning rotary table is directly detachably connected with the positioning column through the free end of the connecting piece.
Further preferably, a mounting hole is coaxially formed in the end face of the other end of the connecting piece, and the free end of the top of the positioning column is embedded into the mounting hole to be fixed.
The connecting piece is connected with the positioning column in a nested manner, so that the structure is simple, and the disassembly and assembly operation is convenient.
Further preferably, the device also comprises a positioning mechanism, wherein the positioning mechanism comprises an angle scale and an infrared emitter; the lower surface of the angle scale is detachably arranged on the positioning column, and the axial direction of the angle scale is in the same direction as the axial direction of the positioning column; a shell is rotatably arranged at the geometric center of the upper surface of the angle scale and is rotatably connected with the upper surface of the angle scale within 360 degrees; the upper surface of the angle scale is provided with angle scales by taking the geometric center as a base point; the positioning hole penetrates through the side wall of the rotary drum; also includes an indicating sleeve; the indicating sleeve is sleeved outside the rotary drum, and the inner diameter of the indicating sleeve is larger than the outer diameter of the rotary drum; and a beam of infrared rays emitted by the infrared emitter penetrates through one of the positioning holes and then is projected on the inner wall of the indicating sleeve to be displayed.
Because the side wall of the rotary drum is provided with a plurality of positioning holes, in order to accurately find the mounting position of each centrifugal drum, a positioning mechanism can be used for accurately finding the angle, and the quick positioning is realized. If 5 separating cylinders are installed, in the axial projection direction of the rotary cylinder, the circle center of the rotary cylinder is taken as a base point, the included angle between adjacent separating cylinders is the same as 360 degrees/5, namely 72 degrees, only the emission direction of the infrared emitter needs to be sequentially aligned with one angle (72 degrees, 144 degrees, 216 degrees, 288 degrees and 360 degrees) on the angle scale, the infrared emitter emits linear infrared rays to pass through a corresponding positioning hole and project the infrared rays onto the rear indicating sleeve, medical personnel can judge which positioning hole is, and the separating cylinders can be directly installed.
Preferably, the infrared emitter in the housing simultaneously emits two infrared rays in opposite directions, and the two infrared rays are located in a straight line direction.
For installing an even number of separating cylinders, the infrared emitters in the shell cover are arranged to emit two beams of infrared rays in opposite directions at the same time, and the positioning is convenient and rapid.
Further preferably, the lower surface of the angle scale is provided with a positioning sleeve, and the positioning sleeve is detachably sleeved on the positioning column.
The invention has the following advantages and beneficial effects:
the invention provides a centrifugal blood separation device which is simple in structure and high in flexibility. The invention is a centrifugal blood separating device integrated by a plurality of prefabricated parts, wherein the rotary disc and the rotary drum are used as fixing parts of the centrifugal machine, and blood separating tubes with different specifications and sizes only need to select corresponding centrifugal drums and positioning rotary discs without replacing parts with high cost, such as a driving mechanism, the rotary disc, the rotary drum and the like, of the centrifugal machine core.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is an exploded view of the centrifugal blood separation device of the present invention;
FIG. 2 is a top view of the centrifugal blood separation device of the present invention;
FIG. 3 is a schematic view of the development of the drum (including the positioning holes) according to the present invention;
FIG. 4 is a schematic view of a centrifugal cylinder according to the present invention;
FIG. 5 is a schematic cross-sectional view of the positioning turntable and the connecting member according to the present invention;
FIG. 6 is a schematic view of the positioning mechanism of the present invention;
fig. 7 is a schematic view of the fitting structure of the indicating sleeve and the rotating drum of the invention.
Reference numbers and corresponding part names in the drawings: 1-rotating cylinder, 2-positioning hole, 3-positioning column, 4-positioning rotating disc, 5-centrifugal cylinder, 6-connecting piece, 7-limiting block, 8-limiting groove, 9-shaft sleeve, 10-angle scale, 11-shell cover, 12-angle scale, 13-indicating sleeve, 14-positioning sleeve, 15-blood centrifugal tube and 16-blood centrifugal tube.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
This embodiment 1 provides a centrifugal blood separator, including rotary drum 1, rotary drum 1 is the drum structure, and rotary drum 1 installs on centrifuge's carousel, and rotary drum 1's axis and the axis coincidence of carousel are equipped with a plurality of locating holes 2 on rotary drum 1's the inside wall, and all locating holes 2 are ring shape round hole along 1 inside wall circumference equidistant evenly distributed of rotary drum, and in 1 axial direction along the rotary drum, rotary drum 1's inside wall includes at least one deck ring shape round hole.
The centrifugal blood separation device also comprises a positioning column 3, a positioning rotary disc 4 and a centrifugal cylinder 5; the positioning column 3 is arranged on the centrifuge turntable, the axis of the positioning column 3 penetrates through the axis of the turntable, and the axis of the positioning column 3 is located on the axis of the rotary drum 1 and is superposed. The positioning rotary table 4 adopts a disc structure, the lower end face of the positioning rotary table 4 is rotatably connected with the positioning column 3 through a connecting piece 6, and the axis direction of the positioning rotary table 4 is superposed with the axis direction of the rotary drum 1.
A limiting block 7 is arranged on the side wall of the centrifugal cylinder 5; a limiting groove 8 is further formed in the side wall of the centrifugal cylinder 5, the limiting groove 8 is arc-shaped, the axis of the arc is in the same direction as the axis of the centrifugal cylinder 5, the extending direction of the limiting groove 8 is in the same direction as the axis of the arc, and the extending direction of the limiting groove 8 penetrates through the axis direction of the centrifugal cylinder 5; the limiting block 7 and the limiting groove 8 are positioned at two radial sides of the centrifugal cylinder 5.
A plurality of centrifuge tubes 5 are uniformly distributed along the circumferential direction of the inner wall of the rotating drum 1 at equal intervals, the limiting blocks 7 are embedded into the positioning holes 2 at the positions of the rotating drum 1, the arc concave surfaces of the limiting grooves 8 are matched with the circumferential surface of the outer edge of the positioning rotating disc 4, the centrifuge tubes 5 are fixed in an annular cavity between the inner wall of the rotating drum 1 and the outer wall of the positioning rotating disc 4, and blood centrifuge tubes are placed in the centrifuge tubes 5.
The invention is a centrifugal blood separating device integrated by a plurality of prefabricated parts, wherein the rotary disc and the rotary drum are used as fixing parts of the centrifugal machine, and blood separating tubes with different specifications and sizes only need to select corresponding centrifugal drums and positioning rotary discs without replacing parts with high cost, such as a driving mechanism, the rotary disc, the rotary drum and the like, of the centrifugal machine core.
The centrifugal cylinder is detachably fixed in the centrifuge by matching a limiting block with the rotary cylinder and matching a limiting groove with the positioning rotary disc, the centrifugal cylinder is arranged in an annular chamber between the inner wall of the positioning rotary disc and the outer wall of the rotary cylinder, a plurality of positioning holes which are uniformly distributed in the circumferential direction of the inner wall of the rotary cylinder at equal intervals are formed in the rotary cylinder, and a certain positioning hole can be randomly selected by the limiting block to be matched with the positioning hole; the outer edge arc surface of the positioning rotary disc is matched with the limiting groove of the centrifugal cylinder, and any position of the outer edge circumferential surface of the positioning rotary disc can be matched with the limiting groove, so that the installation position of the centrifugal cylinder can be continuously and randomly adjusted in the annular chamber between the rotary drum and the positioning rotary disc instead of the existing limited adjustment of the dispersion vertex. Two or more centrifugal cylinders with any number can be installed in one centrifugation, such as 3, 4, 5, 6, 7, 8, etc., as long as any even number or odd number of centrifugal cylinders are distributed in a circular array by taking the axis of the rotating cylinder as the center.
The blood centrifuge tubes have different outer diameters, and centrifuge tubes with corresponding inner diameters can be selected; and if the outer diameters of the centrifugal cylinders are different, selecting a positioning rotary table with the corresponding outer diameter, wherein the larger the outer diameter of the positioning rotary table is, the smaller the annular chamber between the positioning rotary table and the rotary cylinder is, and the smaller the outer diameter of the positioning rotary table is, the larger the annular chamber between the positioning rotary table and the rotary cylinder support is.
Example 2
The improved drum is further improved on the basis of the embodiment 1, the limiting block 7 is embedded into the positioning hole 2 at the position of the drum 1 in an interference fit mode, the limiting block 7 is preferably of a cylindrical structure, the free end of the cylindrical structure is of a hemispherical smooth structure, and the limiting block 7 is conveniently embedded into the positioning hole 2. Two layers of circular ring-shaped row holes are arranged on the inner side wall of the rotary drum 1 in the axial direction of the rotary drum 1, and the positioning holes 2 of the two adjacent layers of circular ring-shaped row holes are arranged in a staggered manner; the centrifugal cylinder 5 is provided with three limiting blocks 7 on the side wall, and the three limiting blocks 7 are arranged to form a regular triangle structure.
The lower end surface of the positioning rotary table 4 is provided with a shaft sleeve 9; one axial end of the connecting piece 6 extends into the shaft sleeve 9 and is rotationally connected with the shaft sleeve 9 through a bearing; the other end of the connecting piece 6 is detachably connected with the positioning column 3; a mounting hole 16 is coaxially formed in the end face of the other end of the connecting piece 6, and the free end of the top of the positioning column 3 is embedded into the mounting hole 16 and fixed; the inner wall of preferred mounting hole 16 is equipped with the bar recess, and the extending direction and the 16 axial syntropies of mounting hole of bar recess are equipped with the bar arch at the top lateral wall of reference column 3, and the bellied extending direction of bar and the axial syntropy of reference column 3 slide embedding bar inslot through spacing arch, restriction mounting hole 16 and 3 circumferential direction of reference column.
Example 3
The improvement is further improved on the basis of the embodiment 2, and the positioning mechanism comprises an angle scale 10 and an infrared emitter; the lower surface of the angle scale 10 is detachably arranged on the positioning column 3, and the axial direction of the angle scale 10 is the same as the axial direction of the positioning column 3; a shell 11 is rotatably arranged at the geometric center of the upper surface of the angle scale 10, and the shell 11 is rotatably connected with the upper surface of the angle scale 10 in 360 degrees; the upper surface of the angle scale 10 is provided with angle scales 12 by taking the geometric center as a base point; the positioning holes 2 are provided through the side wall of the drum 1. Also comprises an indicator sleeve 13; the indication sleeve 13 is sleeved outside the rotary drum 1, and the inner diameter of the indication sleeve 13 is larger than the outer diameter of the rotary drum 1, so that infrared spots projected on the inner wall of the indication sleeve 13 can be observed conveniently; a beam of infrared rays emitted by the infrared emitter penetrates through one of the positioning holes 2 and then is projected on the inner wall of the indicating sleeve 13 to be displayed.
The infrared emitter in the housing 11 emits two infrared rays in opposite directions at the same time, and the two infrared rays are located in a straight line direction. The lower surface of angle scale 10 is equipped with the position sleeve, and the position sleeve can be dismantled the cover and establish on reference column 3.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. The centrifugal blood separation device comprises a rotary drum (1), wherein the rotary drum (1) is arranged on the rotary disc, and is characterized in that a plurality of positioning holes (2) are formed in the inner side wall of the rotary drum (1), all the positioning holes (2) are uniformly distributed in a circular ring shape row hole at equal intervals along the circumferential direction of the inner side wall of the rotary drum (1), and the inner side wall of the rotary drum (1) comprises at least one layer of circular ring shape row hole along the axial direction of the rotary drum (1);
the centrifugal machine also comprises a positioning column (3), a positioning rotary table (4) and a centrifugal cylinder (5);
the positioning column (3) is arranged on the turntable, and the axis of the positioning column (3) is positioned on the axis of the rotary drum (1) and is superposed;
the lower end face of the positioning rotary table (4) is rotatably connected with the positioning column (3) through a connecting piece (6), and the axial direction of the positioning rotary table (4) is superposed with the axial direction of the rotary drum (1);
a limiting block (7) is arranged on the side wall of the centrifugal cylinder (5); a limiting groove (8) is further formed in the side wall of the centrifugal cylinder (5), the limiting groove (8) is arc-shaped, and the axis of the arc-shaped groove is in the same direction as the axis of the centrifugal cylinder (5); the limiting block (7) and the limiting groove (8) are positioned at two radial sides of the centrifugal cylinder (5);
a plurality of centrifuge tubes (5) are uniformly distributed along the circumferential direction of the inner wall of the rotating drum (1) at equal intervals, the limiting blocks (7) are embedded into the positioning holes (2) at the positions of the rotating drum (1), the arc concave surfaces of the limiting grooves (8) are matched with the outer edge circumferential surface of the positioning rotating disc (4), the centrifuge tubes (5) are fixed in an annular cavity between the inner wall of the rotating drum (1) and the outer wall of the positioning rotating disc (4), and the centrifuge tubes (5) are used for placing blood centrifuge tubes.
2. A centrifugal blood separation device according to claim 1, wherein the stopper (7) is interference fitted into the positioning hole (2) at the position of the bowl (1).
3. The centrifugal blood separation device according to claim 1, wherein two layers of circular ring-shaped row holes are arranged on the inner side wall of the rotary drum (1) in the axial direction of the rotary drum (1), and the positioning holes (2) of the two layers of circular ring-shaped row holes which are adjacent up and down are arranged in a staggered mode; the centrifugal cylinder is characterized in that three limiting blocks (7) are arranged on the side wall of the centrifugal cylinder (5), and the three limiting blocks (7) are arranged to form a regular triangle structure.
4. A centrifugal blood separation device according to claim 1, characterized in that the lower end face of the positioning turntable (4) is provided with a bushing (9); one axial end of the connecting piece (6) extends into the shaft sleeve (9) and is rotationally connected with the shaft sleeve (9) through a bearing; the other end of the connecting piece (6) is detachably connected with the positioning column (3).
5. A centrifugal blood separation device according to claim 4, characterized in that the other end face of the connecting piece (6) is coaxially provided with a mounting hole (16), and the top free end of the positioning column (3) is embedded into the mounting hole (16) for fixing.
6. A centrifugal blood separation device according to any of claims 1 to 5 further comprising a positioning mechanism comprising an angle scale (10) and an infrared emitter; the lower surface of the angle scale (10) is detachably mounted on the positioning column (3), and the axial direction of the angle scale (10) is the same as that of the positioning column (3); a shell cover (11) is rotatably arranged at the geometric center of the upper surface of the angle scale (10), and the shell cover (11) is rotatably connected with the upper surface of the angle scale (10) within 360 degrees; the upper surface of the angle scale (10) is provided with angle scales (12) by taking a geometric center as a base point;
the positioning hole (2) penetrates through the side wall of the rotary drum (1); further comprising an indicator sleeve (13); the indication sleeve (13) is sleeved outside the rotary drum (1), and the inner diameter of the indication sleeve (13) is larger than the outer diameter of the rotary drum (1); a beam of infrared rays emitted by the infrared emitter penetrates through one positioning hole (2) and then is projected on the inner wall of the indicating sleeve (13) for display; the infrared emitter is arranged in a housing (11) at the geometric center of the upper surface of the angle scale (10).
7. A centrifugal blood separation device according to claim 6 wherein the infrared emitter in the housing (11) emits two infrared rays in opposite directions simultaneously, and the two infrared rays are in a straight line direction.
8. A centrifugal blood separation device according to claim 6, characterized in that the lower surface of the angle scale (10) is provided with a positioning sleeve which is detachably sleeved on the positioning column (3).
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| CN202010946323.5A CN112206930B (en) | 2020-09-10 | 2020-09-10 | Centrifugal blood separator |
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| CN202010946323.5A CN112206930B (en) | 2020-09-10 | 2020-09-10 | Centrifugal blood separator |
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| CN208727756U (en) * | 2018-04-20 | 2019-04-12 | 利安隆博华（天津）医药化学有限公司 | A kind of medical centrifuge suitable for different size test tube |
| CN109350773A (en) * | 2018-10-17 | 2019-02-19 | 郑州大学第附属医院 | A kind of medical connector and its application method |
| CN210045418U (en) * | 2019-04-03 | 2020-02-11 | 北京唯创博精生物科技有限公司 | Centrifuging tube convenient to install with centrifuge |
| CN211026736U (en) * | 2019-09-17 | 2020-07-17 | 黄校奇 | Food detects uses centrifugal device |
| CN111617886A (en) * | 2020-06-05 | 2020-09-04 | 衡阳师范学院 | Centrifuge rotor |
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