CN105596014B - A kind of double-jacket tube centrifugation injection device - Google Patents

A kind of double-jacket tube centrifugation injection device Download PDF

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Publication number
CN105596014B
CN105596014B CN201610042298.1A CN201610042298A CN105596014B CN 105596014 B CN105596014 B CN 105596014B CN 201610042298 A CN201610042298 A CN 201610042298A CN 105596014 B CN105596014 B CN 105596014B
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port
double
injection device
jacket tube
inner sleeve
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CN105596014A (en
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黄鹭强
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/153Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
    • A61B5/154Devices using pre-evacuated means
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/150007Details
    • A61B5/150015Source of blood
    • A61B5/15003Source of blood for venous or arterial blood
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/150007Details
    • A61B5/150351Caps, stoppers or lids for sealing or closing a blood collection vessel or container, e.g. a test-tube or syringe barrel
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61JCONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J1/00Containers specially adapted for medical or pharmaceutical purposes
    • A61J1/05Containers specially adapted for medical or pharmaceutical purposes for collecting, storing or administering blood, plasma or medical fluids ; Infusion or perfusion containers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61JCONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J1/00Containers specially adapted for medical or pharmaceutical purposes
    • A61J1/14Details; Accessories therefor
    • A61J1/1412Containers with closing means, e.g. caps
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00General characteristics of the apparatus
    • A61M2205/19Constructional features of carpules, syringes or blisters

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Hematology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biomedical Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Pathology (AREA)
  • Biophysics (AREA)
  • Physics & Mathematics (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Vascular Medicine (AREA)
  • Anesthesiology (AREA)
  • External Artificial Organs (AREA)

Abstract

The present invention provides a kind of double-jacket tube centrifugation injection device, including:Outer tube and inner sleeve by setting two outer sleeves and inner sleeve that can coordinate, use a set of double-jacket tube centrifugation injection device, it is possible to complete from a whole set of flow for taking blood, centrifugation, extraction and injection, operating process is simple, work efficiency higher.And due to the outer piston of special designing so that when extracting operation after centrifugation, more convenient operation, blood plasma containing red blood cell will not be inhaled by mistake, and isolated can be extracted in inner sleeve to the greatest extent containing thrombocyte plasma, the waste of blood plasma will not be caused, meets Treatment need.

Description

A kind of double-jacket tube centrifugation injection device
Technical field
The present invention relates to technical field of medical equipment more particularly to a kind of double-jacket tube centrifugation injection devices.
Background technology
High concentration platelet rich plasma (Platelet Rich Plasma, abbreviation PRP), is obtained by centrifugal blood The hematoblastic blood plasma containing high concentration.Containing substantial amounts of growth factor in PRP, there is rapid hemostasis, analgesic, wound is accelerated to be cured Close, the effect of acceleration of tissue repair, can high degree mitigate scar after the operation formation.Further, since PRP can be from patient itself It is extracted in blood, after extracted enrichment processing, available for the treatment of relevant disease, thus abundance, convenient material drawing, preparation side Method is simple and body can be allowed to absorb.The problem of itself PRP use is avoided that viral transmission and immunological rejection occurs.Therefore PRP is widely used in various surgical operations, openheart surgery and plastic operation, in terms of being also widely used in medical cosmetology at present, So the extraction quality of PRP is to influence the key factor of its function and effect.
The extraction of current PRP is needed using PRP machines, but machine is expensive, and during operating cost, basic principle is required for Two centrifuge tubes, extract blood plasma twice, easy to pollute, and blood platelet has different degrees of loss when extracting, inconvenient for operation, during operation Between it is long.
Therefore, there is an urgent need for a kind of easy to operate extraction elements.
The content of the invention
It is easy to operate it is an object of the invention to provide a kind of double-jacket tube centrifugation injection device, work efficiency higher.
Technical solution provided by the invention is as follows:
A kind of double-jacket tube centrifugation injection device, including:Outer tube and inner sleeve, wherein:
The outer tube includes outer barrel and outer piston, and one end of the outer barrel offers first port, and the outer barrel is close The first port is internally provided with the first protrusion, and first protrusion is internally provided with the company connected with the first port Road is connected, the other end of the outer barrel opens, and can accommodate the inner sleeve;
The outer barrel is additionally provided with the outer piston with first protrusions, and the outer piston is away from described One protrusion is provided with first connecting portion on one side, and the first connecting portion is arranged on the outer piston apart from first protrusion most Remote position, the first connecting portion connect the outer piston up and down;
The diameter of the inner sleeve is less than the diameter of the outer tube, and the inner sleeve includes inner cylinder, push rod and inner carrier;
One end of the inner cylinder offers second port, and the push rod and inner carrier are arranged on inside the inner cylinder, described One end of push rod is connected with the inner carrier, and the second port can be with the first connecting portion threaded engagement.
Further, further include:
The outer tube lid that be located in outside the first port to match with the first port.
Further, further include:
The syringe needle to match with the second port.
Further, the outer barrel is additionally provided with the first passage that can accommodate the inner sleeve, the first passage It is connected with the outer piston, the first connecting portion is arranged on one end inside the first passage, and the inner sleeve can lead to The first passage is crossed to be connected with the outer piston spiral.
Further, first protrusion is cone, and the outer piston is the conical surface with first protrusions.
Further, first protrusion is segment.
Further, the outer of the one end of the outer barrel away from the first port is provided with protrusion.
Further, the outer of the one end of the inner cylinder away from second port is provided with protrusion.
Further, the second port is sealed with the first connecting portion spiral junction.
Further, sealed between the outer piston and the outer tube inner wall.
The beneficial effects of the invention are as follows:In this application, by setting two outer sleeves and inner sleeve that can coordinate, make With a set of double-jacket tube centrifugation injection device, it is possible to complete from a whole set of flow for taking blood, centrifugation, extraction and injection, operating process Simply, work efficiency higher.And due to the outer piston of special designing so that when extracting operation after centrifugation, more convenient operation, Blood plasma containing red blood cell will not be inhaled by mistake, and isolated can be extracted in inner sleeve to the greatest extent containing thrombocyte plasma, The waste of blood plasma will not be caused, meets Treatment need.
Description of the drawings
In order to illustrate more clearly of the technical solution of the specific embodiment of the invention, specific embodiment will be described below Needed in attached drawing be briefly described.It should be evident that the accompanying drawings in the following description is some implementations of the present invention Mode, for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings Obtain other attached drawings.
Fig. 1 is a kind of structure diagram of the outer barrel of double-jacket tube centrifugation injection device provided by the invention;
Fig. 2 is a kind of structure diagram of the inner cylinder of double-jacket tube centrifugation injection device provided by the invention;
Fig. 3 is a kind of surface structure schematic diagram of the inner cylinder of double-jacket tube centrifugation injection device provided by the invention;
Fig. 4 is that a kind of cut-away section of second port of the inner cylinder of double-jacket tube centrifugation injection device provided by the invention is illustrated Figure;
Fig. 5 is diagrammatic cross-section when inner sleeve provided by the invention is connected with outer sleeve;
Structure diagram when Fig. 6 is a kind of double-jacket tube centrifugation injection device work provided by the invention;
Fig. 7 is the structure diagram of another outer sleeve provided by the invention.
Reference numeral is summarized as follows:
Outer tube 100;Inner sleeve 200;Outer barrel 101;Outer piston 102;First port 103;First protrusion 104;Connection is logical Road 105;First connecting portion 106;First passage 107;Inner cylinder 201;Push rod 202;Inner carrier 203;Second port 204.
Specific embodiment
Technical scheme is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation Example is part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill Personnel's all other embodiments obtained without making creative work, belong to the scope of protection of the invention.
In the description of the present invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ", The orientation or position relationship of the instructions such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to Convenient for the description present invention and simplify description rather than instruction or imply signified device or element must have specific orientation, With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ", " the 3rd " is only used for description purpose, and it is not intended that instruction or hint relative importance.
In the description of the present invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected;It can To be mechanical connection or be electrically connected;It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi Connection inside two elements.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this Concrete meaning in invention.
Traditional extraction for PRP needs to use centrifugal process twice, and centrifugal process needs two centrifuge tubes twice, i.e., containing Chinese holly The centrifuge tube of rafter acid sodium anti-coagulants and the centrifuge tube without anti-coagulants, in the less surgical application of some PRP usage amounts, such as one Treatment of a little orthopaedic diseases etc., such mode of operation consuming time is long, and operating procedure is more, easily malfunctions in operating process, right Extraction containing thrombocyte plasma is also insufficient or sucks the blood plasma containing red blood cell so as to cause a degree of pollution.
In view of this, the embodiment of the present application provides a kind of double-jacket tube centrifugation injection device, realization pair that can be convenient and simple The extraction of PRP, the double-jacket tube centrifugation injection device include:Outer tube 100 and inner sleeve 200.
The outer tube 100 includes outer barrel 101 and outer piston 102, and one end of the outer barrel 101 offers first port 103, the outer barrel 101 close to the first port 103 first protrusion 104 that is internally provided with, inside first protrusion 104 The interface channel 105 connected with the first port 103 is provided with, the other end of the outer barrel 101 is opened, can accommodated in described Casing 200.
The outer piston 102 to match with first protrusion 104, the outer piston are additionally provided with inside the outer barrel 101 102 are provided with first connecting portion 106 on one side away from first protrusion 104, and the first connecting portion 106 is arranged on described outer The position farthest apart from first protrusion 104 of piston 102, the first connecting portion 106 connect the outer piston about 102 It is logical.
Outer tube 100 and inner sleeve 200 are engaged the extraction that can be realized to PRP, the first port that outer barrel 101 opens up 103 can be used for extracting blood, and it is complete can to extract vein by the syringe needle from human body for the connecting needle in first port 103 Blood is prepared for subsequent centrifugation extraction.Outer piston 102 inside outer barrel 101 matches with the first protrusion 104, i.e., if One protrusion 104 is cone, then the shape of outer piston 102 is exactly taper so that it is prominent that outer piston 102 can be fitted in first completely It rises on 104.First protrusion 104 is to 101 inside protrusions of outer barrel, and the interface channel 105 that sets of 104 inside of the first protrusion is by the Single port 103 is connected with 101 inside of outer barrel, and when carrying out the extraction of blood, blood can be flowed through by first port 103 Interface channel 105 is flowed into inside outer barrel 101.
The diameter of the inner sleeve 200 be less than the outer tube 100 diameter, the inner sleeve 200 include inner cylinder 201, Push rod 202 and inner carrier 203.One end of the inner cylinder 201 offers second port 204, the push rod 202 and inner carrier 203 It is arranged on inside the inner cylinder 201, one end of the push rod 202 is connected with the inner carrier 203, the second port 204 It can be with 106 threaded engagement of first connecting portion.
Outer piston 102 is provided with first connecting portion 106 on one side away from first protrusion 104, first is connected by this Portion 106 can connect outer piston 102 and inner sleeve, be connected in inner sleeve by first connecting portion 106 and outer piston 102 After getting up, the movement of outer piston 102 can be controlled by the entire outer sleeve of pull.In the extraction of blood, inner sleeve is led to It crosses first connecting portion 106 with outer piston 102 to be connected, outer piston 102 is detached by outer barrel 101 by the entire inner sleeve of pull, is made It obtains and forms negative pressure space between outer piston 102 and first port 103, blood is pumped into outer barrel 101, the blood extracted at this time is Whole blood, and extraction action at this time is that the entire inner sleeve of control moves, 203 phase of push rod 202 and inner carrier inside inner sleeve It is opposing stationary to inner cylinder 201.
One end of inner cylinder 201 offers second port 204, can be on outer piston 102 by the second port 204 One connecting portion 106 is connected, and the connection of spiral form may be employed between the two, when needing connection, control inner sleeve rotation, So that after inner sleeve is connected with outer piston 102, and the two connects, sealing, the i.e. liquid such as blood can be realized not It can be omitted by the junction of second port 204 and first connecting portion 106, can only inner cylinder 201 be entered by second port 204 In, ensure the normal of PRP extraction process.
During using above-mentioned double-jacket tube centrifugation injection device, inner sleeve is first passed through into the on second port 204 and outer piston 102 One connecting portion 106 connects, and outer piston 102 is pushed into be bonded as far as possible with the first protrusion 104, at this time the inner carrier on inner sleeve 203 are pushed into inner cylinder 201 and 204 immediate position of second port also by push rod 202.
Then the connecting needle in first port 103 can directly extract blood by the syringe needle from human vas, Blood can be extracted from blood vessel using other connection flexible pipe or extracts blood from other blood storage devices using syringe needle Liquid carries out the extraction of blood at this time, is by controlling inner cylinder 201, and pulling outer piston 102 makes blood enter in outer barrel 101, Push rod 202 and piston in inner cylinder 201 is static with respect to inner cylinder 201, and blood is not entered in inner cylinder 201.
The content of the blood of extraction can determines according to actual conditions extract blood using double-jacket tube centrifugation injection device Into after outer barrel 101, the syringe needle being connected in first port 103 is removed, seal cap, anti-hemostasis are installed outside first port Liquid leaks out, then entire double-jacket tube centrifugation injection device is put into centrifugation apparatus and is centrifuged, and the setting of specific parameter of noncentricity can With determines according to actual conditions, double-jacket tube centrifugation injection device is generally placed vertically during centrifugation, and first port 103 is in lower section, inner sleeve Pipe 200 is on the top.
Using the double-jacket tube centrifugation injection device in the embodiment of the present application, venous whole is typically extracted, venous whole exists After the completion of centrifugation, just it is divided into containing thrombocyte plasma and blood plasma containing red blood cell, wherein containing thrombocyte plasma close to outer piston 102, And the blood plasma containing red blood cell is away from outer piston 102, is the blood plasma that treatment needs containing thrombocyte plasma.At this point, by controlling inner sleeve The inner cylinder 201 of pipe 200 is moved to the direction close to first port 103, i.e., pushes away the direction of outer piston 102 to first port 103 It is dynamic, meanwhile, the push rod 202 in inner cylinder 201 is pulled, push rod 202 is pulled to the direction away from second port 204, it is possible to will Being drawn into containing thrombocyte plasma by first connecting portion 106, second port 204 in inner cylinder 201 in outer barrel 101.
Since the shape of the outer piston 102 in the embodiment of the present application matches with the first protrusion 104, and the first connection Portion 106 is arranged on the outer piston 102 position farthest apart from first protrusion 104, and the first protrusion 104 can be a cone Body, then outer piston 102 is exactly an outer piston 102 that can be located in the cone in loophole shape.Pass through inner sleeve Extraction, it is possible to the thrombocyte plasma as much as possible that will contain is pumped into inner cylinder 201, and avoiding being drawn into red blood cell influences blood Slurry, facilitates subsequent use.After the completion of separation and Extraction, the connection of second port 204 and first connecting portion 106 is contacted, by inner sleeve Cylinder takes out from outer sleeve, as soon as syringe needle can be reconnected in second port 204, can contain blood by what extraction in inner sleeve obtain Platelet-poor plasma is injected into patient's body, completes treatment.
In the embodiment of the present application, by setting two outer sleeves and inner sleeve that can coordinate, a set of double-jacket tube is used Centrifugation injection device, it is possible to complete from a whole set of flow for taking blood, centrifugation, extraction and injection, operating process is simple, work efficiency Higher.And due to the outer piston 102 of special designing by mistake so that when extracting operation after centrifugation, more convenient operation will not be inhaled and contained Red blood cell blood plasma, and isolated can be extracted in inner sleeve to the greatest extent containing thrombocyte plasma, blood will not be caused The waste of slurry, meets Treatment need.
Further, in some embodiments, further include and be located in described with what the first port 103 matched Outer tube 100 outside Single port 103 covers.The lid of outer tube 100 can be fastened in first port 103, complete the extraction of blood Afterwards, in 100 cover buckle of outer tube and then centrifuge will be put into, blood is avoided to be leaked out from first port 103.
Further, in some embodiments, the syringe needle to match with the second port 204 is further included.The syringe needle can To be used when carrying out the injection containing thrombocyte plasma.
Further, in some embodiments, the inner sleeve 200 can be accommodated by being additionally provided with inside the outer barrel 101 First passage 107, the first passage 107 are connected with the outer piston 102, and the first connecting portion 106 is arranged on described One end inside first passage 107, the inner sleeve can be connected by the first passage 107 with 102 spiral of outer piston. It is when inner sleeve is connected with outer piston 102 to set first passage 107, facilitates fixation, and in subsequent extraction operation, avoids The bias effect operation of inner sleeve.
As described above, first protrusion is cone, the outer piston 102 is the conical surface to match with the cone.In addition, First protrusion 104 can also be segment, and the outer piston 102 is the spherical surface to match with the segment.
Further, the outer of the one end of the outer barrel 101 away from the first port 103 is provided with protrusion.It is described The outer of the one end of inner cylinder 201 away from second port 204 is provided with protrusion.It, can be when drawing blood operation by setting protrusion, side Just hold, it is easy to operation.
In the embodiment of the present application, the second port 204 seals after being connected with 106 spiral of first connecting portion, can It is leaked to avoid blood from junction, sealing can be to avoid blood from outer between 101 inner wall of the outer piston 102 and the outer barrel The both sides leakage of piston 102.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or use the present invention. A variety of modifications of these embodiments will be apparent for those skilled in the art, it is as defined herein General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention The embodiments shown herein is not intended to be limited to, and is to fit to and the principles and novel features disclosed herein phase one The most wide scope caused.
It should be noted that herein, term " comprising ", "comprising" or its any other variant are intended to non-row His property includes, so that process, method, article or equipment including a series of elements not only include those elements, and And it further includes other elements that are not explicitly listed or further includes as this process, method, article or equipment institute inherently Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including institute State in process, method, article or the equipment of element that also there are other identical elements.
It these are only the preferred embodiment of the present invention, be not intended to limit the invention, for the technology of this field For personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Finally it should be noted that:The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations;To the greatest extent Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that:Its according to Can so modify to the technical solution recorded in foregoing embodiments either to which part or all technical characteristic into Row equivalent substitution;And these modifications or replacement, the essence of appropriate technical solution is not made to depart from various embodiments of the present invention technology The scope of scheme.

Claims (10)

1. a kind of double-jacket tube centrifugation injection device, which is characterized in that including:Outer tube and inner sleeve, wherein:
The outer tube includes outer barrel and outer piston, and one end of the outer barrel offers first port, and the outer barrel is close to described First port is internally provided with the first protrusion, and first protrusion is internally provided with the connection connected with the first port and leads to Road, the other end of the outer barrel open, and can accommodate the inner sleeve;
The outer barrel is additionally provided with the outer piston with first protrusions, and the outer piston is prominent away from described first That rises is provided with first connecting portion on one side, and it is apart from first protrusion farthest that the first connecting portion is arranged on the outer piston Position, the first connecting portion connect the outer piston up and down;
The diameter of the inner sleeve is less than the diameter of the outer tube, and the inner sleeve includes inner cylinder, push rod and inner carrier;
One end of the inner cylinder offers second port, and the push rod and inner carrier are arranged on inside the inner cylinder, the push rod One end be connected with the inner carrier, the second port can be with the first connecting portion threaded engagement.
2. double-jacket tube centrifugation injection device according to claim 1, which is characterized in that further include:
The outer tube lid that be located in outside the first port to match with the first port.
3. double-jacket tube centrifugation injection device according to claim 1, which is characterized in that further include:
The syringe needle to match with the second port.
4. double-jacket tube centrifugation injection device according to claim 1, which is characterized in that the outer barrel, which is additionally provided with, to be held Receive the first passage of the inner sleeve, the first passage is connected with the outer piston, and the first connecting portion is arranged on institute One end inside first passage is stated, the inner sleeve can be connected by the first passage with the outer piston spiral.
5. double-jacket tube centrifugation injection device according to claim 1, which is characterized in that
First protrusion is cone, and the outer piston is the conical surface with first protrusions.
6. double-jacket tube centrifugation injection device according to claim 1, which is characterized in that
First protrusion is segment.
7. double-jacket tube centrifugation injection device according to claim 1, which is characterized in that
The outer of the one end of the outer barrel away from the first port is provided with protrusion.
8. double-jacket tube centrifugation injection device according to claim 1, which is characterized in that
The outer of the one end of the inner cylinder away from second port is provided with protrusion.
9. double-jacket tube centrifugation injection device according to claim 1, which is characterized in that
The second port is sealed with the first connecting portion spiral junction.
10. double-jacket tube centrifugation injection device according to claim 1, which is characterized in that
It is sealed between the outer piston and the outer tube inner wall.
CN201610042298.1A 2016-01-22 2016-01-22 A kind of double-jacket tube centrifugation injection device Expired - Fee Related CN105596014B (en)

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CN205286375U (en) * 2016-01-22 2016-06-08 黄鹭强 Double cannula centrifugation syringe

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