CN208145042U - Microinjection apparatus with piston - Google Patents
Microinjection apparatus with piston Download PDFInfo
- Publication number
- CN208145042U CN208145042U CN201720638284.6U CN201720638284U CN208145042U CN 208145042 U CN208145042 U CN 208145042U CN 201720638284 U CN201720638284 U CN 201720638284U CN 208145042 U CN208145042 U CN 208145042U
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- CN
- China
- Prior art keywords
- piston
- injection
- needle
- tube body
- syringe needle
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Abstract
The utility model relates to a kind of microinjection apparatus with piston.The microinjection apparatus with piston includes:Injection head, needle point including hollow elongate and the syringe needle that micro-injection substance can be accommodated；Needle core with needle core handle；Tape spool piston, latex piston crown and piston shaft including circle sheet shape, latex piston crown connect the syringe needle of injection head；Tube body is injected, front end is closed by injection tube body nipple, connected with the syringe needle of injection head, and injection tube body nipple has the hole slightly larger than piston shaft；Rear end is closed by tube body inner piston device, and the head of tube body inner piston device has the groove being mutually engaged with piston shaft.The microinjection apparatus is not only able to achieve common soft tissue or endovascular micro-injection, and it can safely and effectively carry out the micro-injection of coating hard tissues, tough and tensile tissue or adipose tissue site, by controllable mode by micro substance accurate injection to target site, and airtightness is good, securely and reliably, it is practical, have broad application prospects.
Description
Technical field
The utility model relates to a kind of device of micro-injection, more particularly to a kind of microinjection apparatus with piston,
It can be used for being coated the positions such as marrow, encephalic, spinal cord is intrathecal of the micro-injection at hard tissues position, especially people or meiofauna
Micro-injection.
Background technique
Currently, general micro-injection tube body only has hollow needle point, needle point and injection-tube body by integral forming or syringe needle
It opens and the pars papillaris for passing through injection tube body is connect with injection tube body.For example, entitled " oncology microinjection apparatus "
Utility model patent（Publication No. CN204181968U）And the patent of invention of entitled " improved super-micro syringe "（It is public
The number of opening is CN2360093Y）.These micro-injection tube bodies can realize micro-injection, have the features such as convenient and efficient, but all can not
For being coated the injection of hard tissues, tough and tensile tissue or adipose tissue site, because their needle point is easy to be blocked up by above-mentioned tissue
Plug, and the band electric driver of the inside is at high cost, it can not be as economic disposable syringe.And entitled " femoral head is worn
The utility model patent of pricker "（Publication No. CN201019807Y）And entitled " disposable bone marrow in-cavity injection apparatus "
Patent of invention（Publication No. CN101934105B）Provided injection device may be implemented for being coated hard tissues position
It punctures, but cannot achieve micro-injection.Entitled " microinjection apparatus with needle core "（Publication No. CN205460216U）,
Device, which can be realized, punctures the position for being coated hard tissues, but it realizes that the membrane structure airtightness of micro-injection is not strong, thin
Film is easy to break, and is not easy to guarantee safety injection.
Currently, existing microinjection apparatus is primarily present following problems both at home and abroad：One, very thin needle point is for puncturing quilt
Cover the position of hard tissues（Such as puncture marrow or skull）When easily snap off；Two, hollow needle point is for puncturing hard bone group
It knits, the tough and tensile tissue such as ligament（As waist is worn）Or when adipose tissue, needle point by tissue occlusion, can not easily be injected；Three, ossis or each
There are certain pressure in kind of tissue, existing micro-injection tube body is often difficult to provide enough pressure with micro injection will be thin
Born of the same parents or medicament are pushed completely into；Four, since the shape of syringe designs, in the case where drug is micro（As candidate stem cell is infused
It penetrates）, the ratio of remaining dose is big；If five, applying pressure by injection gas or liquid, can exist due to bulk gas or liquid
Body enters the circulatory system, causes people or experimental animal that the risk of accident or death occurs because of gas embolism or acute heart failure etc..
Therefore, it is necessary to the microinjection apparatus with piston of development and improvement.
Summary of the invention
In order to overcome the above-mentioned problems in the prior art, the purpose of the utility model is to provide one kind by high-quality latex
Production, the microinjection apparatus with piston with good ductility and airtightness, and it is existing micro- to cooperate needle core component to solve
Amount injection device cannot puncture the position of coating hard tissues, hollow needle point easily by tissue occlusion, micro-injection remnants dose ratio
The technical problems such as example is big, membrane structure airtightness is not strong.
Microinjection apparatus described in the utility model with piston includes：Injection head, the needle point including hollow elongate
With the syringe needle that can accommodate micro-injection substance；Needle core with needle core handle, by the needle core handle by the needle core from the needle
Head insertion and extraction；Tape spool piston, latex piston crown and piston shaft including circle sheet shape, the latex piston crown connection
The syringe needle of the injection head, diameter are consistent with the syringe needle internal diameter on said injector head；Tube body is injected, front end is by injection tube body
Nipple closing, connects with the syringe needle of injection head, and the injection tube body nipple has the hole slightly larger than piston shaft, inserts for piston shaft
Enter and moves；Its rear end is closed by tube body inner piston device, and the head of the tube body inner piston device has mutually stings with piston shaft
The groove of conjunction, therefore, after tape spool piston insertion nipple, tail portion can be mutually engaged with the groove of injection tube body piston crown with
Fixed function is played, tube body inner piston device and tape spool piston link.
Tube body is injected, front end is closed by nipple, and rear end is closed by piston apparatus, so that the shape between piston apparatus and nipple
At fluid reservoir.
According to the further feature of the microinjection apparatus described in the utility model with piston, the latex piston crown
Size it is suitable and have good ductility so that still keeping good airtightness in the syringe needle chamber become narrow gradually in progradation.
According to the further feature of the microinjection apparatus described in the utility model with piston, the work of the tape spool piston
It is sharp to fill in shaft tail end, and diameter is slightly less than injection tube body nipple internal diameter, can be inserted at injection tube body piston and consolidate through nipple circular hole
Fixed, the length of piston shaft is longer than the length of nipple, and its object is to fixed tape spool pistons.
According to the further feature of the microinjection apparatus described in the utility model with piston, the latex piston crown
Diameter it is consistent with the syringe needle internal diameter on said injector head, to ensure airtightness.
According to the further feature of the microinjection apparatus described in the utility model with piston, described in the needle core insertion
After needle point, the tip of the needle core is concordant with the tip bevels of the needle point.
According to the further feature of the microinjection apparatus described in the utility model with piston, the syringe needle and injection-tube
Body is transparent（For example, being made by transparent material）, there is scale thereon.Therefore, user can see gas in syringe needle, liquid
Or the amount of other substances, and realize accurate control micro-injection.
Microinjection apparatus described in the utility model with piston has the following advantages that：
(1) a needle core is configured in injection head, constitutes sting device after needle core insertion needle point.With the needle of matching needle core
Point is punctured, the intensity of needle point can be enhanced and from fractureing, while avoid needle point be blocked.After puncture, needle core handle is lifted
Needle core is extracted, open injection canal.
(2) the latex piston with piston shaft is configured on the nipple of injection tube body, after piston shaft is inserted into nipple, Ke Yiyu
The groove on piston apparatus head connects to play the role of fixed tape spool piston in injection-tube body.
（3）Syringe needle can accommodate the substance for micro-injection, realize micro-injection by piston joint-action mechanism.Work as promotion
When piston apparatus makes the tape spool piston move forward, tape spool piston is charged into the syringe needle, so that the substance in the syringe needle
Enter injection site from the needle point, and airtightness is good, it is securely and reliably, practical.
（4）Syringe needle reference mark, convenient for finely controlling the amount of injection mass.In use, the substance for needing to inject is accurate
It is loaded onto syringe needle, and the injection tube body nipple insertion needle that tape spool piston will be configured, pushes injection tube body push rod, linkage tape spool is living
Plug generates pressure to syringe needle, and the micro substance in syringe needle is forced to enter injection site, by controllable mode by micro-injection object
Matter accurate injection is to target site.
Detailed description of the invention
Fig. 1 and 2 is the structural schematic diagram of one embodiment of the microinjection apparatus described in the utility model with piston.
Fig. 3 is the structural decomposition diagram of the belt carcass sting device of microinjection apparatus described in the utility model.
Fig. 4 is the structural decomposition diagram of the piston apparatus of microinjection apparatus described in the utility model.
In figure, 1：Hollow needle point；2：Needle core；3：Needle core handle；4：Syringe needle（Indicate scale）；5：Tape spool piston（Front end is circle
Laminar latex piston head, after have piston shaft for being fixed on cylinder piston）； 6：Inject tube body nipple；7：Piston；8：Note
Penetrate tube body；9：Fluid reservoir；10：Push rod；11：Handle.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.
Microinjection apparatus described in the utility model with piston, as depicted in figs. 1 and 2, including injection head and note
Penetrate tube body two parts.Injection head is made of needle point 1 and syringe needle 4.1 hollow elongate of needle point, interior pluggable needle core 2；4 energy of syringe needle
Accommodate the substance for being used for micro-injection.The front end of injection tube body 8 is closed by nipple 6, and rear end is closed by piston apparatus, so that in work
Fluid reservoir 9 is formed between plug device and nipple.Between piston apparatus and nipple fluid reservoir 9 can accommodate gas, liquid or other
Substance.
As shown in Figure 1 and Figure 4, piston apparatus includes the handle 11 of piston 7, push rod 10 and its end.When promotion push rod 10
Make piston 7 move forward when, linkage circle sheet shape tape spool piston 5 charged into out of syringe needle 4 so that the substance in syringe needle 4 from needle point 1 into
Enter injection site.
Needle point is usually made by hard rigid material with needle core.As shown in figures 1 and 3, needle core 2, needle core 2 are configured in needle point 1
Needle point it is concordant with the pinpoint inclined plane of needle point 1.The syringe needle 4 is marked with scale（Such as the scale of 0-50 μ l）, the injection-tube
The connecting pin of body 8 and syringe needle 4 is injection tube body nipple 6, injects tube body breathable gas or liquid.Match outside injection tube body nipple 6
One layer of circle sheet shape tape spool piston 5 is set, the circle sheet shape tape spool piston 5 is by the guaranteed milk glue material matter with good ductility
Production, can blockade needle 4 well.
Sting device is constituted in use, needle core 2 is inserted into needle point 1, carries out coating hard tissues, tough and tensile tissue or fat
The puncture of tissue site.After the completion of puncture, temporarily needle core 2 is retained in needle point 1；Tape spool piston 5 is fixed on nipple 6.
The needle core 2 in needle point 1 is extracted, the substance injected will be needed to be added at syringe needle 4 with sample injector（Such as pass through liquid-transfering gun）；Band will be had
In 6 insertion needle 4 of nipple of axis piston 5, slow driving handle 11, the tape spool piston 5 at nipple 6 is due to push rod 10 links to needle
It is charged into first 4.Volume in syringe needle 4 be it is certain, after tape spool piston 5 is charged into, the substance in syringe needle 4 is just to needle point originally
It is flowed at 1.Because being configured with needle core 2 when needle point 1 punctures, after taking out needle core 2, needle point 1 still keeps clear, in addition the tape spool charged into is living
Plug 5 gives pressure controllable in syringe needle 4, and micro substance can be made to eventually enter into expected injection site.
Claims (5)
1. a kind of microinjection apparatus with piston, which is characterized in that including：
Injection head, needle point including hollow elongate and the syringe needle that micro-injection substance can be accommodated；
The needle core is inserted into and is extracted from the syringe needle by the needle core handle by the needle core with needle core handle；
Tape spool piston, latex piston crown and piston shaft including circle sheet shape, the latex piston crown connect the injection
The syringe needle on head；
Tube body is injected, front end is closed by injection tube body nipple, connected with the syringe needle of injection head, the injection tube body nipple has
Slightly larger than the hole of piston shaft；Rear end is closed by tube body inner piston device, and the head of the tube body inner piston device has and piston
The groove that axis is mutually engaged.
2. the microinjection apparatus according to claim 1 with piston, it is characterised in that：The piston shaft of the tape spool piston
Tail end is sharp, and diameter is slightly less than injection tube body nipple internal diameter, and the length of piston shaft is longer than the length of nipple.
3. the microinjection apparatus according to claim 1 with piston, it is characterised in that：The latex piston crown it is straight
Diameter is consistent with the syringe needle internal diameter on said injector head.
4. the microinjection apparatus according to claim 1 with piston, it is characterised in that：The needle core is inserted into the needle point
Afterwards, the tip of the needle core is concordant with the tip bevels of the needle point.
5. the microinjection apparatus according to claim 1 with piston, it is characterised in that：The syringe needle and injection tube body are
Transparent, there is scale thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720638284.6U CN208145042U (en) | 2017-06-05 | 2017-06-05 | Microinjection apparatus with piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720638284.6U CN208145042U (en) | 2017-06-05 | 2017-06-05 | Microinjection apparatus with piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208145042U true CN208145042U (en) | 2018-11-27 |
Family
ID=64412249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720638284.6U Expired - Fee Related CN208145042U (en) | 2017-06-05 | 2017-06-05 | Microinjection apparatus with piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208145042U (en) |
-
2017
- 2017-06-05 CN CN201720638284.6U patent/CN208145042U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181127 Termination date: 20210605 |