CN114152477A - Anti-collision protection method for vacuum blood collection tube puncture sampling needle - Google Patents
Anti-collision protection method for vacuum blood collection tube puncture sampling needle Download PDFInfo
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- CN114152477A CN114152477A CN202111423571.2A CN202111423571A CN114152477A CN 114152477 A CN114152477 A CN 114152477A CN 202111423571 A CN202111423571 A CN 202111423571A CN 114152477 A CN114152477 A CN 114152477A
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- 239000008280 blood Substances 0.000 title claims abstract description 39
- 210000004369 blood Anatomy 0.000 title claims abstract description 39
- 238000005070 sampling Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 54
- 238000001514 detection method Methods 0.000 claims abstract description 48
- 239000004576 sand Substances 0.000 claims abstract description 6
- 238000012360 testing method Methods 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 8
- 230000006378 damage Effects 0.000 claims description 6
- 208000027418 Wounds and injury Diseases 0.000 claims description 5
- 208000014674 injury Diseases 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims 1
- 230000003287 optical effect Effects 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract description 2
- 238000013459 approach Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010241 blood sampling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
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- Power Engineering (AREA)
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Abstract
The invention discloses an anti-collision protection method for a puncture sampling needle of a vacuum blood collection tube, which comprises a stepping motor, a supporting frame body, a puncture needle, the vacuum blood collection tube, a liquid level detection circuit board, a control module, an anti-collision alarm module, a stepping motor control driving circuit board, a capacitive liquid level detection sensor, a power supply module, a sleeve and a threaded rodsAnd load semaphore U of stepping motor driving circuitfThe invention can not only ensure that the puncture sampling needle stops puncturing and alarming in time when encountering foreign matters outside the rubber plug, but also solve the problems of low reliability, reduced sampling precision and cost caused by the mechanical protection of a spring and an optical coupler separation bladeIncreased insufficiency.
Description
Technical Field
The invention relates to the technical field of vacuum blood collection tube puncture, in particular to an anti-collision protection method for a vacuum blood collection tube puncture sampling needle.
Background
At present, in the device for vacuum test tube puncture sample, most do not have crashproof protect function, when meetting vacuum test tube and walk a position to make mistakes and the middle foreign matter (even people's health position) shelters from normal puncture sampling needle action route, often because puncture sampling needle's dynamics and speed are too big, lead to puncture sampling needle to warp, damage the consequence that causes the injury even to the human body, the sample loading accuracy that the degree is lighter also can bring the influence to puncture sampling needle, thereby influence the accuracy of test result.
A spring and a limiting optocoupler catch are added at the tail part of the puncture sampling needle of a small number of analytical instruments, and when the optocoupler catch is bounced up, collision avoidance is triggered; the method has very high requirement on the consistency of the material and the installation position of the spring, otherwise, false alarm is easily generated in the process of puncturing the vacuum blood collection tube; in addition, the structure also has to enable the puncture sampling needle to be in a state of being movable up and down, which inevitably influences the moving position of the puncture sampling needle and the sampling accuracy; this approach also increases cost; the false alarm probability of this approach increases as the spring wears with continued aging during use.
In order to further optimize the vacuum blood collection tube puncture technology, an anti-collision protection method for a vacuum blood collection tube puncture sampling needle is provided.
Disclosure of Invention
The invention aims to provide an anti-collision protection method for a puncture sampling needle of a vacuum blood collection tube, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an anti-collision protection method for a vacuum blood collection tube puncture sampling needle comprises a stepping motor, a support frame body, a first support seat, a second support seat, a puncture needle, a sliding sleeve, a tube cover, a vacuum blood collection tube, a liquid level detection circuit board, a control module, an anti-collision alarm module, a stepping motor control drive circuit board, a capacitance type liquid level detection sensor, a power supply module, a sleeve and a threaded rod, wherein the stepping motor is fixedly installed in the inner side of the support frame body, the bottom end of the threaded rod is fixedly connected with the rotating end of the stepping motor, the first support seat is fixedly connected to the top of the support frame body, the sleeve is sleeved on the inner side of the first support seat in a sliding manner, the sliding sleeve is fixedly connected with the side wall of the first support seat, the bottom end of the sleeve is provided with an opening, the sleeve penetrates through the support frame body to extend to the outer side of the support frame body, the outer side of the threaded rod is sleeved on the inner side of the sleeve, the inner side of the sleeve is provided with an inner thread matched with the threaded rod, second supporting seat bottom one side and telescopic top fixed connection, pjncture needle run through fixed connection on the second supporting seat, extend its below after the lower extreme of pjncture needle passes the sliding sleeve, the upper portion of vacuum test tube is located to the tube cap lid, capacitanc liquid level detection sensor sets firmly on the pjncture needle.
As a further scheme of the invention: the stepping motor is electrically connected with the stepping motor control driving circuit board through a wire, the stepping motor control driving circuit board is electrically connected with the control module through a wire, and the capacitance type liquid level detection sensor is electrically connected with the liquid level detection circuit board through a wire.
As a still further scheme of the invention: the liquid level detection circuit board is electrically connected with the control module through a wire, and the anti-collision alarm module is electrically connected with the control module through a wire.
As a still further scheme of the invention: the control module is electrically connected with the power supply module through a wire.
As a still further scheme of the invention: the power supply module is used for supplying power to the control module, the capacitance type liquid level detection sensor is used for detecting the liquid level in the vacuum blood sampling tube, the control stepping motor is used for driving the puncture needle to move longitudinally, the liquid level detection circuit board is used for controlling and monitoring the capacitance type liquid level detection sensor, the stepping motor control driving circuit board is used for controlling and monitoring the stepping motor, the control module is used for analyzing and controlling the liquid level detection circuit board and the stepping motor control driving circuit board, and the anti-collision alarm module is used for anti-collision alarm and control of the stepping motor.
An anti-collision protection method for a puncture sampling needle of a vacuum blood collection tube comprises the following steps:
the method comprises the following steps: the power supply module supplies power to the control module, the control module sends an instruction to the stepping motor control drive circuit board so as to drive the stepping motor to work, the rotating end of the stepping motor rotates to drive the threaded rod to rotate, the threaded rod drives the sleeve to longitudinally move, the sleeve drives the second support seat to enable the puncture needle to synchronously longitudinally move, and a sampling person holds the vacuum blood collection tube so that the vacuum blood collection tube is positioned under the puncture needle;
step two: the puncture needle is driven by the stepping motor to move downwards, the puncture needle penetrates through the tube cover and extends into the vacuum blood collection tube to sample, and the signal quantity V of the capacitive liquid level detection sensor is monitored at different downlink height positions through the liquid level detection circuit boardsMonitoring the load semaphore U of the driving circuit of the stepping motor by controlling the driving circuit board of the stepping motorfAnd sending the instruction to the control module;
step three: the signal quantity V of the monitored capacitive liquid level detection sensor is monitored by the control modulesAnd load semaphore U of stepping motor driving circuitfThe signal quantity V detected with the normal liquid level is compared with the load signal quantity U of the puncture, after the set threshold value is exceeded, the anti-collision protection is triggered, the anti-collision protection alarm is given, the stepping motor is cut off to stop the puncture needle from moving, the puncture needle and the human body are protected, and further injury is avoided.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention utilizes the liquid level detection circuit board and the stepping motor to control the semaphore of the driving circuit board, and the liquid level detection circuit board and the stepping motor are used for controlling the semaphore of the driving circuit boardSignal quantity V of monitoring capacitance type liquid level detection sensorsAnd load semaphore U of stepping motor driving circuitfThe anti-collision protection alarm is given and the moving part is cut off, so that the puncture needle and the human body are protected, and further injury is avoided.
2. The invention can ensure that the puncture sampling needle stops puncturing and gives an alarm in time when encountering foreign matters (particularly human hand parts) outside the rubber plug, and also solves the problems of low reliability, reduced sample adding precision and increased cost caused by the mechanical protection of a spring and an optical coupling separation blade.
Drawings
Fig. 1 is a schematic structural diagram of an anti-collision protection method for a vacuum blood collection tube puncture sampling needle.
Fig. 2 is a partial connection block diagram in the anti-collision protection method for puncturing the sampling needle by the vacuum blood collection tube.
FIG. 3 is a cross-sectional view of the tube cover in the anti-collision protection method for puncturing the sampling needle with the vacuum blood collection tube.
Shown in the figure: step motor 1, braced frame 2, first supporting seat 3, second supporting seat 4, pjncture needle 5, sliding sleeve 6, tube cap 7, vacuum test tube 8, liquid level detection circuit board 9, control module 10, anticollision alarm module 11, step motor control drive circuit board 12, capacitanc liquid level detection sensor 13, power module 14, sleeve 15, threaded rod 16.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, in an embodiment of the present invention, an anti-collision protection method for a vacuum blood collection tube puncture sampling needle includes a stepping motor 1, a support frame 2, a first support seat 3, a second support seat 4, a puncture needle 5, a sliding sleeve 6, a tube cover 7, a vacuum blood collection tube 8, a liquid level detection circuit board 9, a control module 10, an anti-collision alarm module 11, a stepping motor control driving circuit board 12, a capacitive liquid level detection sensor 13, a power supply module 14, a sleeve 15, and a threaded rod 16, where the stepping motor 1 is fixedly mounted on an inner side of the support frame 2, a bottom end of the threaded rod 16 is fixedly connected to a rotation end of the stepping motor 1, the first support seat 3 is fixedly connected to a top of the support frame 2, the sleeve 15 is slidably sleeved on an inner side of the first support seat 3, the sliding sleeve 6 is fixedly connected to a side wall of the first support seat 3, and a bottom end of the sleeve 15 is provided with an opening, the sleeve 15 penetrates through the supporting frame body 2 to extend to the outside of the threaded rod 16, the inner side of the sleeve 15 is provided with an internal thread matched with the threaded rod 16, one side of the bottom of the second supporting seat 4 is fixedly connected with the top end of the sleeve 15, the puncture needle 5 penetrates through and is fixedly connected onto the second supporting seat 4, the lower end of the puncture needle 5 penetrates through the sliding sleeve 6 and then extends to the lower part of the sliding sleeve, the tube cover 7 covers the upper part of the vacuum blood collection tube 8, the capacitive liquid level detection sensor 13 is fixedly arranged on the puncture needle 5, the stepping motor 1 is electrically connected with the stepping motor control driving circuit board 12 through a lead, the stepping motor control driving circuit board 12 is electrically connected with the control module 10 through a lead, the capacitive liquid level detection sensor 13 is electrically connected with the liquid level detection circuit board 9 through a lead, and the liquid level detection circuit board 9 is electrically connected with the control module 10 through a lead, the control module 10 is electrically connected with the power supply module 14 through a wire, and the anti-collision alarm module 11 is electrically connected with the control module 10 through a wire.
An anti-collision protection method for a puncture sampling needle of a vacuum blood collection tube comprises the following steps:
the method comprises the following steps: the control module 10 is powered by the power supply module 14, the control module 10 sends an instruction to the stepping motor control drive circuit board 12, so that the stepping motor 1 is driven to work, the rotating end of the stepping motor 1 rotates to drive the threaded rod 16 to rotate, the threaded rod 16 drives the sleeve 15 to longitudinally move, the sleeve 15 drives the second support seat 4 to enable the puncture needle 5 to synchronously longitudinally move, and a sampling person holds the vacuum blood collection tube 8 to enable the vacuum blood collection tube 8 to be located right below the puncture needle 5;
step two: the puncture needle 5 is driven to move downwards by the stepping motor 1, the puncture needle 5 penetrates through the tube cover 7 and extends into the vacuum blood collection tube 8 to sample, and the signal quantity V of the capacitive liquid level detection sensor 13 is monitored at different downlink height positions by the liquid level detection circuit board 9sThe load semaphore U of the driving circuit of the stepping motor 1 is monitored by the stepping motor control driving circuit board 12fAnd sending the instruction to the control module;
step three: the signal quantity V of the monitored capacitive liquid level detection sensor 13 is monitored by the control modulesAnd load semaphore U of driving circuit of stepping motor 1fSemaphore V detected from normal liquid level0And the load semaphore U of the puncture0And comparing, triggering anti-collision protection after the set threshold value is exceeded, giving an anti-collision protection alarm, cutting off the stepping motor 1 to stop the puncture needle 5 from moving, playing a role in protecting the puncture needle 5 and the human body, and avoiding further injury.
Normally, V is set only when the puncture needle 5 moves down from the Home position to the blood sample liquid in the evacuated blood collection tube 8sThe signal quantity V of the capacitive liquid level detection sensor 13 is suddenly increased in the middle of the stroke, if a hand or other parts slightly touch the metal part of the sampling needle, and thensWill be far larger than the signal quantity V of normal detection blood sample0Once V is foundsAnd if the abnormal condition occurs, the anti-collision alarm module 11 triggers anti-collision protection.
Is normalIn this case, the load signal amount of the drive circuit of the stepping motor 1 is U only when the puncture needle 5 moves down from the Home position to the height range (defined as the H region) where the evacuated blood collection tube 8 needs to puncture the tube cap 70Load semaphore U before and after the needle of the sampling needle passes through the H regionfAll will be compared with U0Much smaller, once U is foundfIn case of an abnormality, the control module 10 will also send an instruction to the collision avoidance and alarm module 11 to trigger collision avoidance.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (6)
1. The utility model provides an anticollision protection method for vacuum test tube puncture sampling needle, including step motor (1), braced frame body (2), first supporting seat (3), second supporting seat (4), pjncture needle (5), sliding sleeve (6), tube cap (7), vacuum test tube (8), liquid level detection circuit board (9), control module (10), anticollision alarm module (11), step motor control drive circuit board (12), capacitanc liquid level detection sensor (13), power module (14), sleeve (15) and threaded rod (16), its characterized in that: step motor (1) fixed mounting is in the inboard of braced frame body (2), the bottom of threaded rod (16) and the rotation end fixed connection of step motor (1), first supporting seat (3) fixed connection is at braced frame body (2) top, the inboard of first supporting seat (3) is located to sleeve (15) slip cap, the lateral wall fixed connection of sliding sleeve (6) and first supporting seat (3), the bottom of sleeve (15) is the opening setting, the outside of threaded rod (16) is located to threaded cap after sleeve (15) passes braced frame body (2) and extends its inside, the inboard of sleeve (15) is equipped with the internal thread with threaded rod (16) looks adaptation, the top fixed connection of second supporting seat (4) bottom one side and sleeve (15), pjncture needle (5) run through fixed connection on second supporting seat (4), the lower end of the puncture needle (5) penetrates through the sliding sleeve (6) and then extends to the lower portion of the puncture needle, the upper portion of the vacuum blood collection tube (8) is covered by the tube cover (7), and the capacitive liquid level detection sensor (13) is fixedly arranged on the puncture needle (5).
2. The anti-collision protection method for the vacuum blood collection tube puncture sampling needle according to claim 1, characterized in that: step motor (1) is through wire and step motor control drive circuit board (12) electric connection, step motor control drive circuit board (12) is through wire and control module (10) electric connection, capacitanc liquid level detection sensor (13) is through wire and liquid level detection circuit board (9) electric connection.
3. The anti-collision protection method for the vacuum blood collection tube puncture sampling needle according to claim 1, characterized in that: the liquid level detection circuit board (9) is electrically connected with the control module (10) through a lead, and the anti-collision alarm module (11) is electrically connected with the control module (10) through a lead.
4. The anti-collision protection method for the vacuum blood collection tube puncture sampling needle according to claim 1, characterized in that: the control module (10) is electrically connected with the power supply module (14) through a lead.
5. The anti-collision protection method for the vacuum blood collection tube puncture sampling needle according to claim 1, characterized in that: power module (14) are used for supplying power to control module (10), capacitanc liquid level detection sensor (13) are used for surveying the liquid level in vacuum test tube (8), control step motor (1) are used for driving pjncture needle (5) longitudinal movement, liquid level detection circuit board (9) are used for controlling and monitoring capacitanc liquid level detection sensor (13), step motor control drive circuit board (12) are used for controlling and monitoring step motor (1), control module (10) are used for liquid level detection circuit board (9) and step motor control drive circuit board (12) analysis and control, anticollision alarm module (11) are used for anticollision warning and control step motor (1).
6. The anti-collision protection method for the vacuum blood collection tube puncture sampling needle according to claim 1, characterized in that: the method comprises the following steps:
the method comprises the following steps: the power supply module (14) supplies power to the control module (10), the control module (10) sends an instruction to the stepping motor control drive circuit board (12), so that the stepping motor (1) is driven to work, the rotating end of the stepping motor (1) rotates to drive the threaded rod (16) to rotate, the threaded rod (16) drives the sleeve (15) to longitudinally move, the sleeve (15) drives the second support seat (4) to enable the puncture needle (5) to synchronously longitudinally move, and a sampling person holds the vacuum blood collection tube (8) to enable the vacuum blood collection tube (8) to be located under the puncture needle (5);
step two: the puncture needle (5) is driven to move downwards through the stepping motor (1), the puncture needle (5) penetrates through the tube cover (7) and extends into the vacuum blood collection tube (8) to sample, and the signal quantity V of the capacitive liquid level detection sensor (13) is monitored at different downlink height positions through the liquid level detection circuit board (9)sThe load semaphore U of the driving circuit of the stepping motor (1) is monitored by controlling the driving circuit board (12) through the stepping motorfAnd sending the instruction to the control module;
step three: the signal quantity V of the monitored capacitive liquid level detection sensor (13) is monitored by a control modulesAnd a load semaphore U of a stepping motor (1) drive circuitfSemaphore V detected from normal liquid level(0)And the load semaphore U of the puncture(0)And comparing, triggering anti-collision protection after the set threshold value is exceeded, giving an anti-collision protection alarm, cutting off the stepping motor (1) to stop the puncture needle (5) to play a role in protecting the puncture needle (5) and the human body, and avoiding further injury.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111423571.2A CN114152477A (en) | 2021-11-26 | 2021-11-26 | Anti-collision protection method for vacuum blood collection tube puncture sampling needle |
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| CN202111423571.2A CN114152477A (en) | 2021-11-26 | 2021-11-26 | Anti-collision protection method for vacuum blood collection tube puncture sampling needle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115436106A (en) * | 2022-09-19 | 2022-12-06 | 南京颐兰贝生物科技有限责任公司 | Sampling needle anti-collision device for biochemical analyzer and anti-collision method thereof |
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| CN210155158U (en) * | 2019-05-09 | 2020-03-17 | 长沙斯康生物科技有限公司 | Sample feeding device for blood analyzer |
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| CN213121248U (en) * | 2020-08-19 | 2021-05-04 | 王素香 | Anti-pollution telescopic liquid-transfering gun head |
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