CN117643481B - Anti-blocking amniotic fluid sampler for obstetrics and gynecology department - Google Patents
Anti-blocking amniotic fluid sampler for obstetrics and gynecology department Download PDFInfo
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- CN117643481B CN117643481B CN202410123561.4A CN202410123561A CN117643481B CN 117643481 B CN117643481 B CN 117643481B CN 202410123561 A CN202410123561 A CN 202410123561A CN 117643481 B CN117643481 B CN 117643481B
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- 210000004381 amniotic fluid Anatomy 0.000 title claims abstract description 50
- 238000005070 sampling Methods 0.000 claims abstract description 63
- 230000007246 mechanism Effects 0.000 claims abstract description 56
- 239000000523 sample Substances 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims description 26
- 210000003754 fetus Anatomy 0.000 description 6
- 239000011550 stock solution Substances 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 3
- 230000007306 turnover Effects 0.000 description 3
- 238000002669 amniocentesis Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 208000026350 Inborn Genetic disease Diseases 0.000 description 1
- 102000013529 alpha-Fetoproteins Human genes 0.000 description 1
- 108010026331 alpha-Fetoproteins Proteins 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004113 cell culture Methods 0.000 description 1
- 210000000349 chromosome Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000016361 genetic disease Diseases 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 210000003765 sex chromosome Anatomy 0.000 description 1
- 230000036266 weeks of gestation Effects 0.000 description 1
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Abstract
The invention relates to the technical field of amniotic fluid sampling, in particular to an anti-blocking gynaecology and obstetrics amniotic fluid sampler, which comprises a sampling mechanism, wherein one side of the sampling mechanism is provided with a syringe, the lower part of the syringe is provided with a connecting mechanism, the lower part of the connecting mechanism is provided with a sampling needle, the upper part of the sampling needle is arranged in a fixing mechanism, one side of the fixing mechanism is arranged on the periphery of a probe.
Description
Technical Field
The invention relates to the technical field of amniotic fluid sampling, in particular to an anti-blocking amniotic fluid sampler for obstetrics and gynecology.
Background
Amniotic fluid examination is usually carried out between 16 and 20 weeks of gestation, amniotic fluid is adopted for examination through amniocentesis, and examination items comprise cell culture, sex chromosome identification, chromosome karyotype analysis, amniotic fluid alpha fetoprotein measurement, amniotic fluid biochemical examination and the like so as to determine the maturity degree and health condition of a fetus, and whether the fetus is normal or has certain genetic diseases or not is diagnosed, and amniotic fluid sampling is carried out through amniocentesis by using a puncture needle.
At present, the amniotic fluid sampling mainly adopts an injector for sampling, but the sampling mode needs two persons to cooperate, one person holds a probe, one person samples, the operation is very inconvenient, and the amniotic fluid of the previous 2 milliliters is required to be discarded after the amniotic fluid puncture, so that the sample is prevented from being polluted.
Disclosure of Invention
The invention aims to solve the defects in the background technology and provides an anti-blocking amniotic fluid sampler for obstetrics and gynecology.
In order to achieve the above purpose, the invention adopts the following technical scheme: the anti-blocking amniotic fluid sampler comprises a sampling mechanism, wherein an injector is arranged on one side of the sampling mechanism, a connecting mechanism is arranged on the lower portion of the injector, a sampling needle is arranged on the lower portion of the connecting mechanism, the upper portion of the sampling needle is arranged inside a fixing mechanism, and one side of the fixing mechanism is arranged on the periphery of a probe;
the sampling mechanism comprises a shell, a driving assembly and a lifting assembly, wherein the driving assembly and the lifting assembly are arranged on the left side of the shell, the lifting assembly is arranged on the right side of the driving assembly, the injector is arranged on the right side of the shell, and the upper portion of the lifting assembly is connected with the lifting assembly.
Preferably, the lifting assembly comprises a clamping groove, a fixed block, a connecting rod, a sliding rod, a toothed plate, a support, a piston, a connecting nozzle and a liquid storage cavity, wherein the periphery of the upper end of the injector is arranged inside the clamping groove, the clamping groove is formed in the middle of the fixed block, the periphery of the fixed block is fixedly connected to the right end of the connecting rod, the left side of the connecting rod is slidingly connected to the upper portion of the sliding rod, the left side of the sliding rod is slidingly connected to the inner side wall of the shell, the lower portion of the sliding rod is magnetically attracted to the upper portion of the support, the lower end of the support is fixedly connected to the middle of the piston, the periphery of the piston is slidingly connected to the inside of the liquid storage cavity, the liquid storage cavity is formed in the left side of the lower portion of the shell, the upper end of the connecting nozzle is fixedly connected to the lower portion of the shell, the connecting nozzle is communicated with the liquid storage cavity, the left side of the toothed plate is fixedly connected to the right side of the sliding rod, and the toothed plate is connected to the driving assembly.
Preferably, the middle part of the connecting rod is magnetically attracted to the middle part of the upper side of the shell.
Preferably, the drive assembly comprises a button, a connecting bin, a first spring, a rack, a tooth column clutch assembly and a shaft rod, wherein the right side of the connecting bin is fixedly connected to the left upper portion of the sampling mechanism, the periphery of the button is slidably connected to the inside of the connecting bin, the left side of the first spring is arranged on the right side of the button, the right side of the first spring is arranged on the left upper portion of the sampling mechanism, the left end of the rack is fixedly connected to the right side of the button, the front end and the rear end of the shaft rod are arranged on the upper portion of the sampling mechanism, the middle portion of the tooth column is arranged on the middle portion of the shaft rod, the periphery of the tooth column is in meshed connection to the right side of the toothed plate, the lower portion of the rack is connected with the tooth column through the clutch assembly, and the clutch assembly is arranged on the front portion of the shaft rod.
Preferably, the clutch assembly comprises two ratchet discs, gears, a connecting column, a chuck, a second spring and a fixing column, wherein one ratchet disc is fixedly connected to the front side of a tooth column, the other ratchet disc is fixedly connected to the rear side of the gears, the two ratchet discs are meshed with each other, the rear side of the connecting column is rotationally connected to the front side of the gears, the front side of the connecting column is slidingly connected to the rear side of the fixing column, the second spring is arranged between the connecting column and the chuck, the outer turnover of the chuck is connected to the middle of the connecting column, the middle of the chuck is fixedly connected to the front part of a shaft rod, the front side of the fixing column is fixedly connected to the inner side of a shell, the connecting column and the fixing column are arranged on the front part of the shaft rod, and the upper part of the gears are meshed and connected to the lower part of the rack.
Preferably, the coupling mechanism includes hard tube, hose and two connectors, the hard tube upper end is connected with the syringe lower extreme through the connector, hose one end fixed connection is in hard tube middle part, the hose other end is connected with the connecting nozzle through the connector, the hard tube lower extreme sets up on sample needle upper portion.
Preferably, a one-way valve is arranged in the middle of the hose.
Preferably, the fixing mechanism comprises a fixing frame, a cavity, a clamping block, a deflector rod, a fixing groove and a spring rod, wherein the cavity is formed in the middle of the fixing frame, the fixing groove is formed in one side of the fixing frame, the other side of the fixing frame is arranged on the lower portion of the probe, the cavity is mutually communicated with the fixing groove, the periphery of the clamping block is slidably connected inside the cavity, the lower portion of the deflector rod is fixedly connected to the upper portion of the clamping block, one side of the cavity is arranged at one end of the spring rod, and the other end of the spring rod is arranged on the inner side wall of the cavity.
Preferably, a plurality of holes are formed in the bottom end of the sampling needle.
Compared with the prior art, the invention has the following beneficial effects:
1. the drive assembly drives the slide bar to move upwards through the pinion rack, drive the piston through the magnetism and upwards move in the stock solution intracavity portion for the amniotic fluid enters into the stock solution intracavity portion through coupling mechanism, when the piston moves to stock solution chamber upper portion from the stock solution chamber lower part and can't last the removal, under the continuous removal of slide bar, disconnection between slide bar and the support, make the amniotic fluid no longer get into inside, pinion rack top moves the connecting rod simultaneously, push-and-pull rod through fixed block pulling syringe moves up, thereby make the syringe extract amniotic fluid through coupling mechanism, thereby can make the preceding 2ML of the amniotic fluid of extraction get into the stock solution intracavity portion, prevent that preceding 2 ML's amniotic fluid from influencing the inspection.
2. The finger of the hand-held probe hooks the deflector rod, the other hand penetrates the sampling needle through the fixing groove and is inserted into the pregnant woman, and finally the deflector rod is loosened to reset the clamping block, so that the upper part of the sampling needle is fixed in the fixing groove, and the sampling needle is prevented from being separated.
3. The hand-held probe scans the fetus in vivo, then the finger of the hand-held probe pulls the deflector rod, then the sampling needle passes through the fixed slot and is inserted into the pregnant woman, finally, the deflector rod is loosened, thereby the upper part of the sampling needle is fixed in the fixed slot, the rack is moved right by pressing the button, the gear is rotated clockwise, the toothed column is driven to rotate clockwise by the clutch component, the toothed plate drives the slide bar to move upwards, after the hand is loosened, the spring firstly moves the button leftwards, the gear can not block the slide bar to move leftwards by the clutch component, the slide bar can be driven to move upwards continuously by repeatedly pressing the button, so that amniotic fluid can be extracted, the whole operation flow is realized by one person, and the operation is very convenient.
Drawings
FIG. 1 is a schematic perspective view of an anti-clogging amniotic fluid sampler for obstetrics and gynecology in accordance with the present invention;
FIG. 2 is a schematic structural view of a fixing mechanism of an anti-blocking amniotic fluid sampler for obstetrics and gynecology in accordance with the present invention;
FIG. 3 is a schematic structural view of a connecting mechanism of an anti-blocking amniotic fluid sampler for obstetrics and gynecology in accordance with the present invention;
FIG. 4 is a schematic diagram showing the internal structure of an anti-clogging amniotic fluid sampler for obstetrics and gynecology in accordance with the present invention;
FIG. 5 is a schematic view of a block structure of an anti-clogging amniotic fluid sampler for obstetrics and gynecology in accordance with the present invention;
FIG. 6 is a schematic diagram of a driving assembly of an anti-clogging amniotic fluid sampler for obstetrics and gynecology in accordance with the present invention;
FIG. 7 is a schematic diagram of a clutch assembly of an anti-blocking amniotic fluid sampler for obstetrics and gynecology in accordance with the present invention;
fig. 8 is a schematic structural view of a fixing column of an anti-blocking amniotic fluid sampler for obstetrics and gynecology.
1. A sampling mechanism; 101. a housing; 102. a drive assembly; 1021. a button; 1022. a connecting bin; 1023. a first spring; 1024. a rack; 1025. tooth columns; 1026. a clutch assembly; 10261. a ratchet disc; 10262. a gear; 10263. a connecting column; 10264. a chuck; 10265. a second spring; 10266. fixing the column; 1027. a shaft lever; 103. a lifting assembly; 1031. a clamping groove; 1032. a fixed block; 1033. a connecting rod; 1034. a slide bar; 1035. a toothed plate; 1036. a support; 1037. a piston; 1038. a connecting nozzle; 1039. a liquid storage cavity; 2. a syringe; 3. a connecting mechanism; 301. a hard tube; 302. a hose; 303. a connector; 4. a probe; 5. a fixing mechanism; 501. a fixing frame; 502. a cavity; 503. a clamping block; 504. a deflector rod; 505. a fixing groove; 6. a sampling needle.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.
The anti-blocking amniotic fluid sampler for obstetrics and gynecology department as shown in fig. 1-8 comprises a sampling mechanism 1, wherein an injector 2 is arranged on one side of the sampling mechanism 1, a connecting mechanism 3 is arranged on the lower part of the injector 2, a sampling needle 6 is arranged on the lower part of the connecting mechanism 3, the upper part of the sampling needle 6 is arranged in a fixing mechanism 5, and one side of the fixing mechanism 5 is arranged on the periphery of a probe 4;
the sampling mechanism 1 comprises a shell 101, a driving component 102 and a lifting component 103, wherein the driving component 102 and the lifting component 103 are arranged on the left side of the shell 101, the lifting component 103 is arranged on the right side of the driving component 102, the syringe 2 is arranged on the right side of the shell 101, the upper part of the lifting component 103 is connected with the lifting component 103, in summary, before amniotic fluid is extracted, the connector 303 is connected with the syringe 2 and the connector 1038, the probe 4 is used for scanning a fetus in a body, then the finger holding the probe 4 is used for hooking a deflector rod 504, the other hand is used for penetrating the sampling needle 6 through a fixed groove 505 and inserting the sampling needle into a pregnant woman, finally the deflector rod 504 is released, so that a clamping block 503 is reset, the upper part of the sampling needle 6 is fixed in the fixed groove 505 to prevent the sampling needle 6 from being separated, then the sampling mechanism 1 and the syringe 2 are held by holding the hand, the lower end of the hard tube 301 is connected with the sampling needle 6, and a rack 1024 is moved to the right by pressing a button 1021, the gear 10262 rotates clockwise, the tooth bar 1025 rotates clockwise through the clutch component 1026, the tooth plate 1035 drives the slide bar 1034 to move upwards, after the hand is released, the first spring 1023 enables the button 1021 to move leftwards, the gear 10262 does not block the rack 1024 to move leftwards through the clutch component 1026, the slide bar 1034 can be driven to move upwards continuously through repeatedly pressing the button 1021, the slide bar 1034 drives the piston 1037 to move upwards in the liquid storage cavity 1039 through magnetic attraction, so that amniotic fluid enters the liquid storage cavity 1039 through the connecting mechanism 3, the slide bar 1034 does not drive the fixed block 1032 to move in the initial stage of upward movement because the connecting rod 1033 is connected with the upper part of the slide bar 1034, when the piston 1037 moves from the lower part of the liquid storage cavity 1039 to the upper part of the liquid storage cavity 1039 and cannot move continuously, the slide bar 1034 is disconnected from the support 1036 under the continuous movement of the slide bar 1034, so that amniotic fluid can not enter the liquid storage cavity 1039, simultaneously, the toothed plate 1035 pushes the connecting rod 1033, and the push-pull rod of the syringe 2 is pulled to move upwards through the fixing block 1032, so that the syringe 2 can draw amniotic fluid through the connecting mechanism 3.
The lifting assembly 103 comprises a clamping groove 1031, a fixed block 1032, a connecting rod 1033, a slide bar 1034, a toothed plate 1035, a support 1036, a piston 1037, a connecting nozzle 1038 and a liquid storage cavity 1039, wherein the periphery of the upper end of the syringe 2 is arranged inside the clamping groove 1031, the clamping groove 1031 is arranged in the middle of the fixed block 1032, the periphery of the fixed block 1032 is fixedly connected to the right end of the connecting rod 1033, the left side of the connecting rod 1033 is in sliding connection with the upper part of the slide bar 1034, the left side of the slide bar 1034 is in sliding connection with the inner side wall of the shell 101, the lower part of the slide bar 1034 is magnetically attracted to the upper part of the support 1036, the lower end of the support 1036 is fixedly connected to the middle of the piston 1037, the periphery of the piston 1037 is in sliding connection with the inside the liquid storage cavity 1039, the liquid storage cavity 1039 is arranged on the left side of the lower part of the shell 101, the connecting nozzle 1038 is communicated with the liquid storage cavity 1039, the left side of the toothed plate 1035 is fixedly connected to the drive assembly 102, the drive assembly 102 drives the slide bar 1034 to move upwards through the toothed plate 1035, the slide bar 1034 is in sliding connection with the inner side of the shell 1033, and the upper part of the piston 1033 is continuously moved to the upper part of the piston 1033 is continuously, and the upper part of the piston 1033 is continuously moved to the upper part of the piston 1033 is not in the upper part is continuously connected with the piston 1033, and the upper part is continuously moves, which is connected to the upper part of the piston 1039, and the upper part is continuously moves, and the upper part is connected to the upper part of the piston 1033, and the upper part is at the upper part of the piston 1033.
The middle part of connecting rod 1033 magnetism is inhaled at casing 101 upside middle part, through magnetism for connecting rod 1033 is adsorbed on casing 101 upper portion, and because connecting rod 1033 and slide bar 1034 upper portion sliding connection, make slide bar 1034 move initial stage upward and can not drive fixed block 1032 and remove, thereby can make the preceding 2ML of the amniotic fluid of drawing get into liquid storage chamber 1039 inside, prevent that the amniotic fluid of preceding 2ML from influencing the inspection.
The driving assembly 102 comprises a button 1021, a connecting bin 1022, a first spring 1023, a rack 1024, a tooth column 1025 clutch assembly 1026 and a shaft 1027, wherein the right side of the connecting bin 1022 is fixedly connected to the upper left side of the sampling mechanism 1, the periphery of the button 1021 is slidably connected to the inside of the connecting bin 1022, the left side of the first spring 1023 is arranged on the right side of the button 1021, the right side of the first spring 1023 is arranged on the upper left side of the sampling mechanism 1, the left end of the rack 1024 is fixedly connected to the right side of the button 1021, the front end and the rear end of the shaft 1027 are arranged on the upper middle of the sampling mechanism 1, the middle of the tooth column 1025 is arranged in the middle of the shaft 1027, the periphery of the tooth column 1025 is meshed and connected to the right side of a toothed plate 1035, the lower portion of the rack 1024 is connected with the tooth column 1025 through the clutch assembly 1026, the clutch assembly 1026 is arranged on the front of the shaft 1027, the clutch assembly is pressed to enable the rack 1024 to move right, so that a gear 10262 rotates clockwise, the toothed plate 1034 is driven to move upwards by the clockwise through the clutch assembly 1026, after the clutch assembly 1026, the left side of the button 1023 is loosened, the left side of the button 1021 is blocked, the gear 1021021 is enabled to move upwards, the gear 1024 is pushed upwards, and the gear bar is kept, the button 1022 can be pushed upwards, and the slide bar is repeatedly, and the injection rod can be operated.
The clutch assembly 1026 includes two ratchet discs 10261, gear 10262, connecting column 10263, chuck 10264, two springs 10265 and fixed column 10266, wherein one ratchet disc 10261 side fixed connection is in tooth column 1025 front side, another ratchet disc 10261 side fixed connection is in gear 10262 rear side, two ratchet discs 10261 intermesh, connecting column 10263 rear side rotates and connects in gear 10262 front side, connecting column 10263 front side sliding connection is in fixed column 10266 rear side, two springs 10265 set up between connecting column 10263 and chuck 10264, chuck 10264 outer turnover connection is in connecting column 10263 middle part, chuck 10264 middle part fixed connection is in axostylus axostyle 1027 front portion, fixed column 10266 front side fixed connection is in casing 101 inside wall, connecting column 10263 and fixed column 10266 set up in axostylus axostyle 1027 front portion, gear 10262 upper portion meshing connection is in rack 1024 lower part, under no external force is applyingdown, spring two can jack up connecting column 10263, thereby make ratchet disc 10261 and tooth column 10262 front side slide bar 10261 slide bar 10262 front side slide bar sliding connection, spring two ratchet discs 10265 set up between connecting column 10263 and chuck 10264, chuck 10264 outer turnover connection is in connecting column 10263, chuck 10264 middle part, chuck 10264 middle of connecting column 1027, chuck is in front side, chuck 10262 side sliding rod 10262 side sliding connection is in front side, chuck 10262 side clockwise, and can make two slide bar 10262 rotate, and can make two counter clockwise, and so that the slide bar 10262 can make two slide bar 10262 rotate, and make counter clockwise, and make mutually-bar 10262 rotate, and make counter clockwise, and slide bar 10262 rotate, and make counter clockwise, and make two slide bar 10262 rotate, and make opposite side rod 10262 rotate, and make opposite side and, and rotate, and make opposite side bar 10262 rotate, and move opposite when rotating, and can make rotating and move, and move opposite.
The connecting mechanism 3 comprises a hard tube 301, a hose 302 and two connectors 303, wherein the upper end of the hard tube 301 is connected with the lower end of the syringe 2 through the connectors 303, one end of the hose 302 is fixedly connected to the middle of the hard tube 301, the other end of the hose 302 is connected with a connecting nozzle 1038 through the connectors 303, the lower end of the hard tube 301 is arranged on the upper portion of the sampling needle 6, the connectors 303 are connected with the syringe 2 and the connecting nozzle 1038 before amniotic fluid is extracted, then the sampling mechanism 1 and the syringe 2 are held by hands, and the lower end of the hard tube 301 is connected with the sampling needle 6, so that amniotic fluid can enter the liquid storage cavity 1039.
The check valve is arranged in the middle of the hose 302, after the amniotic fluid is not extracted from the liquid storage cavity 1039, the amniotic fluid in the liquid storage cavity 1039 is isolated through the check valve, so that the amniotic fluid in the injector 2 is prevented from being polluted, and the detection accuracy of the amniotic fluid is ensured.
The fixing mechanism 5 comprises a fixing frame 501, a cavity 502, a clamping block 503, a deflector rod 504, a fixing groove 505 and a spring rod, wherein the cavity 502 is formed in the middle of the fixing frame 501, the fixing groove 505 is formed in one side of the fixing frame 501, the other side of the fixing frame 501 is arranged at the lower part of the probe 4, the cavity 502 is mutually communicated with the fixing groove 505, the periphery of the clamping block 503 is slidably connected inside the cavity 502, the lower part of the deflector rod 504 is fixedly connected to the upper part of the clamping block 503, one side of the cavity 502 is arranged at one end of the spring rod, the other end of the spring rod is arranged on the inner side wall of the cavity 502, a fetus in a body is firstly scanned through the probe 4, then the finger of the probe 4 is held by one hand to hook the deflector rod 504, the other hand is used for enabling the sampling needle 6 to penetrate through the fixing groove 505 and to be inserted into a pregnant woman, and finally the deflector rod 504 is released, so that the clamping block 503 is reset, the upper part of the sampling needle 6 is fixed inside the fixing groove 505, and the sampling needle 6 is prevented from being separated.
The bottom of the sampling needle 6 is provided with a plurality of holes, prevents to block up because the tip of the sampling needle 6 is by the impurity in the amniotic fluid, causes unable extraction amniotic fluid.
Working principle:
before amniotic fluid is extracted, the connector 303 is connected with the injector 2 and the connecting nozzle 1038, a fetus in the body is scanned through the probe 4, then a finger holding the probe 4 is used for hooking the deflector rod 504, the other hand is used for enabling the sampling needle 6 to pass through the fixed groove 505 and be inserted into the pregnant woman, finally the deflector rod 504 is released, the clamping block 503 is reset, thereby fixing the upper part of the sampling needle 6 in the fixed groove 505, preventing the sampling needle 6 from being separated, then the sampling mechanism 1 and the injector 2 are held by hands, the lower end of the hard tube 301 is connected with the sampling needle 6, the rack 1024 is enabled to move right by pressing the button 1021, the gear 10262 is enabled to rotate clockwise, the toothed column 1025 is enabled to rotate clockwise by the clutch component 1026, the toothed plate 1035 is enabled to drive the slide bar 1034 to move upwards, after the hand is released, the spring one 1023 is enabled to enable the button 1021 to move left, the gear 10262 is enabled not to block the rack 1024 from moving left by the clutch component 1026, the sliding rod 1034 can be driven to continuously move upwards by repeatedly pressing the button 1021, the sliding rod 1034 drives the piston 1037 to move upwards in the liquid storage cavity 1039 through magnetic attraction, so that amniotic fluid enters the liquid storage cavity 1039 through the connecting mechanism 3, the connecting rod 1033 is in sliding connection with the upper portion of the sliding rod 1034, the sliding rod 1034 cannot drive the fixed block 1032 to move in the initial stage of upward movement, when the piston 1037 moves from the lower portion of the liquid storage cavity 1039 to the upper portion of the liquid storage cavity 1039 and cannot continuously move, the connection between the sliding rod 1034 and the support 1036 is disconnected under the continuous movement of the sliding rod 1034, the amniotic fluid does not enter the liquid storage cavity 1039 any more, meanwhile, the toothed plate 1035 pushes the connecting rod 1033, and the push-pull rod of the syringe 2 is pulled to move upwards through the connecting mechanism 1032, and accordingly the amniotic fluid is extracted from the syringe 2.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. Anti-blocking amniotic fluid sampler for obstetrics and gynecology department comprises a sampling mechanism (1), and is characterized in that: the device is characterized in that a syringe (2) is arranged on one side of the sampling mechanism (1), a connecting mechanism (3) is arranged on the lower portion of the syringe (2), a sampling needle (6) is arranged on the lower portion of the connecting mechanism (3), the upper portion of the sampling needle (6) is arranged inside a fixing mechanism (5), and one side of the fixing mechanism (5) is arranged on the periphery of the probe (4);
the sampling mechanism (1) comprises a shell (101), a driving assembly (102) and a lifting assembly (103), wherein the driving assembly (102) and the lifting assembly (103) are arranged on the left side of the shell (101), the lifting assembly (103) is arranged on the right side of the driving assembly (102), the injector (2) is arranged on the right side of the shell (101), and the upper part of the lifting assembly (103) is connected with the lifting assembly (103); the lifting assembly (103) comprises a clamping groove (1031), a fixed block (1032), a connecting rod (1033), a slide rod (1034), a toothed plate (1035), a support (1036), a piston (1037), a connecting nozzle (1038) and a liquid storage cavity (1039), wherein the periphery of the upper end of the injector (2) is arranged in the clamping groove (1031), the clamping groove (1031) is arranged in the middle of the fixed block (1032), the periphery of the fixed block (1032) is fixedly connected to the right end of the connecting rod (1033), the left side of the connecting rod (1033) is slidingly connected to the upper part of the slide rod (1034), the left side of the slide rod (1034) is slidingly connected to the inner side wall of the shell (101), the lower part of the slide rod (1034) is magnetically attracted to the upper part of the support (1036), the lower end of the support (1036) is fixedly connected to the middle part of the piston (1037), the periphery of the piston (1037) is slidingly connected to the inside the liquid storage cavity (1039), the liquid storage cavity (1039) is arranged in the lower part of the shell (101), the left side of the connecting nozzle (1038) is fixedly connected to the upper end of the connecting nozzle (1035), and the left side of the connecting rod (1035) is fixedly connected to the toothed plate (1035). The middle part of the connecting rod (1033) is magnetically attracted to the middle part of the upper side of the shell (101); the driving assembly (102) comprises a button (1021), a connecting bin (1022), a first spring (1023), a rack (1024), a tooth column (1025) clutch assembly (1026) and a shaft rod (1027), wherein the right side of the connecting bin (1022) is fixedly connected to the upper left side of the sampling mechanism (1), the periphery of the button (1021) is slidably connected to the inside of the connecting bin (1022), the left side of the first spring (1023) is arranged on the right side of the button (1021), the right side of the first spring (1023) is arranged on the upper left side of the sampling mechanism (1), the left end of the rack (1024) is fixedly connected to the right side of the button (1021), the front end and the rear end of the shaft rod (1027) are arranged on the upper middle of the sampling mechanism (1021), the middle of the tooth column (1025) is arranged on the middle of the shaft rod (1027), the periphery of the tooth column (1025) is meshed and connected to the right side of a toothed plate (1035), the lower part of the rack (1026) is connected with the tooth column (1025) through the clutch assembly (1025), and the clutch assembly (1027) is arranged on the front part of the shaft rod (1027). The clutch assembly (1026) comprises two ratchet discs (10261), a gear (10262), a connecting column (10263), a chuck (10264), a spring II (10265) and a fixed column (10266), wherein one side of the ratchet disc (10261) is fixedly connected to the front side of the gear column (1025), one side of the other ratchet disc (10261) is fixedly connected to the rear side of the gear (10262), the two ratchet discs (10261) are meshed with each other, the rear side of the connecting column (10263) is rotationally connected to the front side of the gear (10262), the front side of the connecting column (10263) is slidingly connected to the rear side of the fixed column (10266), the spring II (10265) is arranged between the connecting column (10263) and the chuck (10264), the outer periphery of the chuck (10264) is rotationally connected to the middle of the connecting column (10263), the middle of the chuck (10264) is fixedly connected to the front part of the shaft (1027), the front side of the fixed column (10266) is fixedly connected to the inner side of the casing (101), the connecting column (10263) and the front side of the shaft (10266) are arranged on the upper part of the gear (1024) and the lower part (10262); the connecting mechanism (3) comprises a hard tube (301), a hose (302) and two connectors (303), wherein the upper end of the hard tube (301) is connected with the lower end of the injector (2) through the connectors (303), one end of the hose (302) is fixedly connected to the middle part of the hard tube (301), the other end of the hose (302) is connected with a connecting nozzle (1038) through the connectors (303), and the lower end of the hard tube (301) is arranged on the upper part of the sampling needle (6); a one-way valve is arranged in the middle of the hose (302); the fixing mechanism (5) comprises a fixing frame (501), a cavity (502), a clamping block (503), a deflector rod (504), a fixing groove (505) and a spring rod, wherein the cavity (502) is formed in the middle of the fixing frame (501), the fixing groove (505) is formed in one side of the fixing frame (501), the other side of the fixing frame (501) is arranged at the lower part of the probe (4), the cavity (502) is communicated with the fixing groove (505), the periphery of the clamping block (503) is slidably connected inside the cavity (502), the lower part of the deflector rod (504) is fixedly connected to the upper part of the clamping block (503), one side of the cavity (502) is arranged at one end of the spring rod, and the other end of the spring rod is arranged on the inner side wall of the cavity (502); the bottom end of the sampling needle (6) is provided with a plurality of holes.
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