CN214681799U - Needle tube ejection structure for surface punching of microfluidic chip - Google Patents
Needle tube ejection structure for surface punching of microfluidic chip Download PDFInfo
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- CN214681799U CN214681799U CN202120765843.6U CN202120765843U CN214681799U CN 214681799 U CN214681799 U CN 214681799U CN 202120765843 U CN202120765843 U CN 202120765843U CN 214681799 U CN214681799 U CN 214681799U
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- cylinder
- fixed connection
- mobile jib
- movable block
- ejection structure
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Abstract
The utility model discloses a needle tubing ejection structure for micro-fluidic chip surface punches, including mobile jib and cylinder, the inside cavity that is provided with of mobile jib, and inner wall fixed connection fixed plate, ejector pin top in the fixed plate lower surface axle center fixed connection, the cylinder is cup jointed to interior ejector pin week side, resilience part bottom is connected on the cylinder top, resilience part is used for control the cylinder shrink, resilience part top fixed connection movable block bottom, the sliding connection of movable block week side clearance fit the mobile jib inner wall, the movable block top can be dismantled and connect the movable rod bottom, the movable rod passes hood top fixed connection gland lower surface, the connection can be dismantled at the mobile jib top the hood, inside the cylinder can be withdrawed the mobile jib voluntarily, be favorable to protecting when the cylinder is unused, prevent that the cylinder from receiving fish tail, The quality of the perforation is affected by the damages such as extrusion or collision.
Description
Technical Field
The utility model relates to a micro-fluidic chip technical field specifically is a needle tubing ejection structure for micro-fluidic chip surface punches.
Background
The microfluidic chip technology integrates basic operation units of sample preparation, reaction, separation, detection and the like in biological, chemical and medical analysis processes into a micron-scale chip, and automatically completes the whole analysis process. Due to its great potential in the fields of biology, chemistry, medicine and the like, the method has been developed into a new research field crossing the disciplines of biology, chemistry, medicine, fluid, electronics, materials, machinery and the like. The soft micro-fluidic chip represented by PDMS (Polydimethylsiloxane) material is a polymer material widely applied to the micro-fluidic field due to the characteristics of low cost, simple use, good chemical inertness and the like. In order to make the microfluidic chip perform its specific function, it is necessary to inject a fluid sample into a pipeline, and in a conventional laboratory, a hole is formed in a PDMS chip, and then a steel needle or a catheter is inserted to perform a fluid introducing and controlling function.
At present, chinese utility model with a bulletin number of CN205925738U discloses a hand-held microfluidic chip hole puncher, include: the main body part is provided with a cavity along the axial direction; the needle tube is fixed at one end of the main body part and is provided with a through hole communicated with the cavity; because the needle cylinder is fixedly arranged, the needle cylinder can not be retracted again, and when the needle cylinder is not used, the needle cylinder is easily damaged by scratching, extrusion or collision and the like, so that the punching quality is influenced.
Therefore, the needle tube ejection structure for surface punching of the microfluidic chip is provided for solving the problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a needle tubing ejection structure for micro-fluidic chip surface punches to solve the problem that provides among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a needle tube ejection structure for surface punching of a microfluidic chip comprises a main rod and a needle cylinder, wherein a cavity is formed in the main rod, the inner wall of the main rod is fixedly connected with a fixing plate, the axis of the lower surface of the fixing plate is fixedly connected with the top end of an inner ejector rod, the periphery of the inner ejector rod is sleeved with the needle cylinder, and the top end of the needle cylinder is connected with the bottom of a rebound component;
the rebound component is used for controlling the needle cylinder to contract;
resilience part top fixed connection movable block bottom, the side clearance fit's of movable block week sliding connection the mobile jib inner wall, the movable block bottom of connecting can be dismantled on the top, the movable rod passes hood top fixed connection gland lower surface, the connection can be dismantled at the mobile jib top the hood.
Preferably, the part of kick-backing includes interior briquetting, interior briquetting bottom end fixed connection cylinder top, interior briquetting with fixed connection spring both ends between the mobile jib diapire, the cylinder is in the spring is inboard, interior briquetting top fixed connection branch bottom, branch passes the fixed plate, just branch top fixed connection movable block bottom.
Preferably, the periphery of the top of the main rod is detachably connected with the inner side of the bottom of the top cap through threads.
Preferably, the fixed cover of cup jointing of mobile jib week side is inboard, cover week side is equipped with the non-skid protrusion, cover preparation material includes silica gel.
Preferably, the top of the movable block is provided with a screw hole, and the screw hole is in threaded connection with threads arranged on the periphery of the bottom of the movable rod.
Preferably, the periphery of the movable rod is in clearance fit with the inner side of the top cap in a sliding connection mode.
Compared with the prior art, the beneficial effects of the utility model are that:
under the action of the spring, the inner pressing block can drive the needle cylinder to move upwards in the upward movement process, the fixing plate can fix the inner ejector rod, and the inner ejector rod automatically ejects chip residues in the needle cylinder in the upward movement process of the needle cylinder, so that the influence on subsequent chip punching is avoided, and the punching efficiency is improved;
the needle cylinder can be automatically retracted into the main rod, so that the needle cylinder is protected when not used, and the needle cylinder is prevented from being damaged by scratches, extrusion, collision and the like, so that the punching quality is influenced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a three-dimensional schematic diagram of the present invention;
fig. 3 is a schematic top view of the middle fixing plate of the present invention.
In the figure: 1. a gland; 2. a movable rod; 3. a top cap; 4. a main rod; 5. a movable block; 6. a resilient member; 7. a fixing plate; 8. an inner ejector rod; 9. holding the sleeve; 10. a needle cylinder; 61. a strut; 62. pressing the block; 63. a spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a needle tube ejection structure for surface punching of a microfluidic chip comprises a main rod 4 and a needle cylinder 10, wherein a cavity is formed in the main rod 4, the inner wall of the cavity is fixedly connected with a fixing plate 7, the axis of the lower surface of the fixing plate 7 is fixedly connected with the top end of an inner ejector rod 8, the fixing plate 7 can fix the inner ejector rod 8, the inner ejector rod 8 can eject residues of a chip in the needle cylinder 10, the influence on punching of the next chip is avoided, the needle cylinder 10 is sleeved on the periphery of the inner ejector rod 8, the needle cylinder 10 can move up and down on the periphery of the inner ejector rod 8, and the top end of the needle cylinder 10 is connected with the bottom of a rebound component 6;
the middle springback component 6 of the utility model is used for controlling the needle cylinder 10 to contract;
in the utility model, the top of the springback component 6 is fixedly connected with the bottom end of the movable block 5, the movable block 5 is in clearance fit with the inner wall of the sliding connection main rod 4 around the movable block 5, the movable block 5 can slide up and down on the inner side of the main rod 4, the top end of the movable block 5 can be detachably connected with the bottom end of the movable rod 2, so as to be convenient for disassembly and assembly, the movable rod 2 passes through the lower surface of the top end fixed connection gland 1 of the top cap 3, and the top of the main rod 4 can be detachably connected with the top cap 3;
the utility model discloses well resilience part 6 includes interior briquetting 62, interior briquetting 62 bottom fixed connection cylinder 10 top, the fixed connection spring 63 both ends between interior briquetting 62 and the 4 diapire of mobile jib, cylinder 10 is inboard in spring 63, interior briquetting 62 top fixed connection branch 61 bottom, branch 61 passes fixed plate 7, and branch 61 top fixed connection movable block 5 bottoms, when interior briquetting 62 overcomes spring 63 elasticity and pushes down, promote cylinder 10 ejecting downwards, cylinder 10 bottom can punch the PDMS chip;
in the utility model, the top peripheral side of the main rod 4 is detachably connected with the bottom inner side of the top cap 3 through the screw thread, so that the main rod 4 and the top cap 3 can be conveniently disassembled and assembled;
in the utility model, the inner side of the holding sleeve 9 is fixedly sleeved on the periphery of the middle main rod 4, the periphery of the holding sleeve 9 is provided with the antiskid lugs, and the holding sleeve 9 is made of silica gel, thereby facilitating hand-held punching and being flexible to use;
in the utility model, the top of the movable block 5 is provided with a screw hole which is connected with the screw thread arranged at the bottom periphery of the movable rod 2 by screw thread, and after the movable rod 2 is screwed into the movable block 5, the movable rod 2 can drive the movable block 5 to move up and down;
the utility model discloses 2 week side clearance fit's of well movable rod sliding connection hood 3 inboards are favorable to improving the stability when movable rod 2 reciprocates.
The working principle is as follows: when the utility model is used, the movable rod 2 can be pushed to drive the movable block 5 to move downwards by pressing the gland 1 downwards, the movable block 5 can push the inner pressing block 62 to move downwards by the supporting rod 61, the needle cylinder 10 is pushed to eject downwards when the inner pressing block 62 overcomes the elasticity of the spring 63 to press downwards, and the bottom end of the needle cylinder 10 can punch the PDMS chip;
after punching, under the effect of spring 63, briquetting 62 rebound in can promoting, briquetting 62 rebound in interior pushes away branch 61, movable block 5, movable rod 2 and top cap 1 rebound, reset, briquetting 62 rebound in-process can drive cylinder 10 rebound including, and fixed plate 7 can play the fixed action to internal ejector pin 8, internal ejector pin 8 is at the cylinder 10 rebound in-process, it is ejecting with cylinder 10 middle part chip residue automatically, avoid influencing the next chip and punch, cylinder 10 withdraws inside mobile jib 4 simultaneously, be favorable to protecting cylinder 10 when not using, prevent that cylinder 10 from receiving the fish tail, harm such as extrusion or colliding with, and influence the quality of punching.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a needle tubing ejection structure for punching on micro-fluidic chip surface, includes mobile jib (4) and cylinder (10), its characterized in that: a cavity is formed in the main rod (4), the inner wall of the main rod is fixedly connected with a fixing plate (7), the axis of the lower surface of the fixing plate (7) is fixedly connected with the top end of an inner ejector rod (8), a needle cylinder (10) is sleeved on the periphery of the inner ejector rod (8), and the top end of the needle cylinder (10) is connected with the bottom of a rebound component (6);
the rebound component (6) is used for controlling the needle cylinder (10) to contract;
resilience part (6) top fixed connection movable block (5) bottom, all side clearance fit's sliding connection of movable block (5) mobile jib (4) inner wall, connect movable rod (2) bottom can be dismantled on movable block (5) top, movable rod (2) pass hood (3) top fixed connection gland (1) lower surface, the connection can be dismantled at mobile jib (4) top hood (3).
2. The needle tube ejection structure for surface punching of microfluidic chips according to claim 1, wherein: rebound part (6) are including interior briquetting (62), interior briquetting (62) bottom fixed connection cylinder (10) top, interior briquetting (62) with fixed connection spring (63) both ends between mobile jib (4) diapire, cylinder (10) are in spring (63) are inboard, interior briquetting (62) top fixed connection branch (61) bottom, branch (61) pass fixed plate (7), just branch (61) top fixed connection movable block (5) bottom.
3. The needle tube ejection structure for surface punching of microfluidic chips according to claim 1, wherein: the periphery of the top of the main rod (4) is detachably connected with the inner side of the bottom of the top cap (3) through threads.
4. The needle tube ejection structure for surface punching of microfluidic chips according to claim 1, wherein: the holding sleeve (9) is fixedly sleeved on the inner side of the main rod (4), the anti-slip protrusions are arranged on the inner side of the holding sleeve (9), and the holding sleeve (9) is made of silica gel.
5. The needle tube ejection structure for surface punching of microfluidic chips according to claim 1, wherein: the top of the movable block (5) is provided with a screw hole which is in threaded connection with threads arranged on the periphery of the bottom of the movable rod (2).
6. The needle tube ejection structure for surface punching of microfluidic chips according to claim 1, wherein: the periphery of the movable rod (2) is in clearance fit with the inner side of the top cap (3) in a sliding connection manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120765843.6U CN214681799U (en) | 2021-04-15 | 2021-04-15 | Needle tube ejection structure for surface punching of microfluidic chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120765843.6U CN214681799U (en) | 2021-04-15 | 2021-04-15 | Needle tube ejection structure for surface punching of microfluidic chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214681799U true CN214681799U (en) | 2021-11-12 |
Family
ID=78531258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120765843.6U Active CN214681799U (en) | 2021-04-15 | 2021-04-15 | Needle tube ejection structure for surface punching of microfluidic chip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214681799U (en) |
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2021
- 2021-04-15 CN CN202120765843.6U patent/CN214681799U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230109 Address after: No. 803, Yingbin Road, Shuyang County, Suqian City, Jiangsu Province (Hall 7, Yuexing Home) Patentee after: Shuyang Dongfang Hospital Address before: 223800 South Huanghe Road, Suqian City, Jiangsu Province, 399 Patentee before: SUQIAN College |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230824 Address after: Room 2216-2, Floor 56A22, Torch Road, High tech Industrial Park, Dalian, Liaoning Province, 116000 Patentee after: Presys (Dalian) Technology Co.,Ltd. Address before: No. 803, Yingbin Road, Shuyang County, Suqian City, Jiangsu Province (Hall 7, Yuexing Home) Patentee before: Shuyang Dongfang Hospital |
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| TR01 | Transfer of patent right |