CN110063730B - Quantitative blood sampling system - Google Patents
Quantitative blood sampling system Download PDFInfo
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- CN110063730B CN110063730B CN201910471238.5A CN201910471238A CN110063730B CN 110063730 B CN110063730 B CN 110063730B CN 201910471238 A CN201910471238 A CN 201910471238A CN 110063730 B CN110063730 B CN 110063730B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150015—Source of blood
- A61B5/15003—Source of blood for venous or arterial blood
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/153—Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
- A61B5/154—Devices using pre-evacuated means
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Abstract
The invention relates to the technical field of medical instruments, in particular to a quantitative blood sampling system, which comprises a vein blood sampling needle, negative pressure heparin tube and ration blood sampling adjusting device, ration blood sampling adjusting device includes the casing, be equipped with the mounting groove that is used for vertical to installation negative pressure heparin tube on the casing lateral wall, the inside cavity that is equipped with of casing, the cavity bottom is fixed with the electro-magnet, the electro-magnet top is equipped with the permanent magnet, the elastic component between permanent magnet and the cavity top, the sliding tray has been seted up on the lateral wall of mounting groove, sliding tray and cavity intercommunication, sliding connection has the liquid level detection subassembly that is used for detecting negative pressure heparin tube liquid level on the lateral wall of mounting groove, liquid level detection subassembly passes through connecting piece fixed connection with the permanent magnet, connecting piece and sliding tray sliding connection, be equipped with ration blood sampling controller on the casing, ration blood sampling controller is used for setting for the. The invention can accurately and quantitatively take blood.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a quantitative blood sampling system.
Background
Venous blood sample collection is known to be by use of disposable vacuums or and disposable syringes. At present, a disposable vacuum blood collector is commonly used for collecting blood samples, medical staff generally comprehensively determines collection quantity according to negative pressure in a blood collection tube and scales of the blood collection tube, but the blood collection quantity is extremely inaccurate due to the fact that the negative pressure is often inaccurate, scale marks are not obvious and the blood collection tube inclines, and detection results are possibly influenced. For avoiding the emergence of above-mentioned problem, most medical personnel take and can take out the principle of never taking out more, consequently have and gather too much, extravagant problem because in case the volume of taking a blood sample is not enough, just can not continue to use same blood taking needle to take a blood sample, can only change new blood taking needle and negative pressure heparin tube and take a blood sample, not only waste time and energy, still waste the resource, lead to doctor-patient problem simultaneously easily. And the vacuum degree of the vacuum blood collection tube is lack of effective quantitative detection. Therefore, whether the vacuum exists in the vacuum blood sampling tube or not is not easy to know, and the degree of vacuum is not easy to know, whether the vacuum blood sampling tube is qualified or not is also not easy to know, because the vacuum blood sampling tube cannot be distinguished by naked eyes at all, and only a random destructive sampling inspection method can be adopted in production, so that the usability of each vacuum blood sampling tube cannot be ensured.
Disclosure of Invention
The invention mainly aims to provide a quantitative blood sampling system which can accurately and quantitatively sample blood.
In order to achieve the above purpose, the present invention provides a quantitative blood sampling system, comprising a venous blood sampling needle, a negative pressure blood sampling tube and a quantitative blood sampling adjusting device, wherein the quantitative blood sampling adjusting device comprises a housing, a mounting groove for vertically mounting the negative pressure blood sampling tube is arranged on the side wall of the housing, a cavity is arranged inside the housing, an electromagnet is fixed at the bottom of the cavity, a permanent magnet is arranged above the electromagnet, an elastic member is arranged between the permanent magnet and the top of the cavity, a sliding groove is arranged on the side wall of the mounting groove and communicated with the cavity, a liquid level detection assembly for detecting the liquid level of the negative pressure blood sampling tube is slidably connected to the side wall of the mounting groove, the liquid level detection assembly is fixedly connected with the permanent magnet through a connecting member, the connecting member is slidably connected with the sliding groove, a quantitative blood sampling controller is arranged on, and the position of the liquid level detection assembly on the sliding groove is controlled by the electromagnet.
The working principle and the advantages of the invention are as follows:
the electromagnet can change the input current by setting the set value of the blood sampling amount, so as to change the magnetic field generated by the electromagnet, when the adjacent magnetic poles of the permanent magnet and the electromagnet are the same, the permanent magnet moves upwards in the cavity under the action of like charges repelling, and the liquid level detection assembly is driven to move in the mounting groove under the action of the connecting piece, so that the mounting position of the liquid level detection assembly is changed, because the liquid level detection assembly is adjusted to detect the height of the blood collected in the vacuum tube, the specifications of the vacuum blood collection tube after being produced are basically consistent, and the vacuum blood collection tube is kept to be vertically arranged, therefore, by determining the height of the collected blood and then converting the height, the volume of the blood collected in the vacuum tube can be accurately controlled, therefore, the blood volume collected in the vacuum tube can be accurately controlled by setting the set value of the blood collection volume. The accuracy of blood collection amount is improved, and accurate quantitative blood collection is realized. Avoid because of the volume of taking a blood is not enough, can only change new blood taking needle and negative pressure heparin tube and take a blood sample, waste time and energy, still resource-wasting.
Further, ration blood sampling controller includes current control module, touch input module and touch-sensitive screen, touch input module is used for through the manual input blood volume set value of touch-sensitive screen, current control module is used for generating irregular electric current according to the blood volume set value of taking a blood sample to input for the electro-magnet.
The mode of touch-sensitive screen manual input makes the input of blood volume set value more convenient, shows more directly perceived.
Further, the vein blood taking needle includes blood taking needle, tail needle, connects the transparent hose of blood taking needle and tail needle, the tail needle includes needle tubing and syringe needle, be equipped with the switch on the syringe needle and tie, when the switch is tied and is in normal condition, the vein blood taking needle switches on with the negative pressure heparin tube.
The state of tying through the control switch realizes the control of conducting between the venous blood taking needle and the negative pressure blood taking tube, can let the blood taking obtain free control, makes things convenient for the blood taking operation.
Furthermore, the shell is provided with an electric signal control switch matched with the switch bolt for use, the quantitative blood sampling controller comprises a switch control module, the switch control module comprises an induction coil, the induction coil is electrically connected with the electric signal control switch and fixed in the cavity, and the electric signal control switch controls the switch bolt to be in a normal state when the electric signal control switch does not receive the electric signal and changes.
The electromagnet is connected with irregularly-changed current, a magnetic field with constantly-changed magnetic flux is generated, the induction coil generates induced current with changed current value in the changed magnetic field, the induced current serves as an electric signal serving as a starting condition of the electric signal control switch, when the electric signal received by the electric signal control switch does not change, the induction coil does not generate current, namely no electric signal is generated, the magnetic flux of the magnetic field generated by the electromagnet does not change, the controller pushes the permanent magnet to a specified position through the electromagnet, and then the liquid level detection assembly connected with the permanent magnet reaches a specified detection height, blood sampling can be performed, the switch bolt is in a normal state, the venous blood sampling needle is conducted with the negative pressure blood sampling tube, and automatic blood sampling is completed.
Further, be provided with the cylinder in the cavity, the cylinder includes the piston board, piston board fixedly connected with electric telescopic handle, electric telescopic handle is started by signal control switch control, the cylinder passes through the air duct intercommunication with the syringe needle of tail needle, signal control switch is used for when receiving the signal of telecommunication and changes, and control switch bolt is in abnormal condition, and the negative pressure heparin tube switches on with the cylinder.
Because the vacuum degree of the vacuum blood sampling tube is lack of an effective quantitative detection method, whether the vacuum exists in the vacuum blood sampling tube or not can not be distinguished by naked eyes, in the scheme, before blood sampling, the liquid level detection assembly is adjusted by setting a set value of the blood sampling amount, and when an electric signal control switch receives an electric signal to change, the liquid level detection assembly does not reach a specified detection height, the blood sampling operation can not be carried out, so that a switch bolt is in an abnormal state, the negative pressure blood sampling tube is communicated with a cylinder, and the electric signal control switch controls an electric telescopic rod to be opened at the same time, so that a piston plate moves, the air pressure in the cylinder is reduced, and because the negative pressure blood sampling tube is communicated with the cylinder, the gas of the blood sampling tube enters the cylinder, the blood sampling operation can be carried out no matter whether the vacuum degree value of the vacuum blood sampling tube, the vacuum degree in the blood sampling tube is increased, and the blood sampling effect is improved.
Further, the liquid level detection assembly is a non-contact liquid level sensor which is electrically connected with the quantitative blood sampling controller.
The non-contact liquid level sensor can avoid the contact of the liquid level sensor and blood to cause cross infection.
Furthermore, an alarm is arranged on the shell and used for controlling the alarm to give an alarm by the quantitative blood sampling controller when the non-contact liquid level sensing detects that the blood in the negative pressure blood sampling tube reaches a set height.
The medical staff can know the blood sampling condition conveniently.
Further, the alarm is a buzzer. Convenient material drawing, simplicity and practicality.
Further, the blood taking needle is a disposable blood taking needle. Avoiding cross infection.
Further, the elastic part is a pressure spring. Convenient material drawing, simplicity and practicality.
Drawings
FIG. 1 is an isometric view of a regulator of the present invention in a system for quantitative lancing.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: casing 1, air duct 2, syringe needle 3, signal of telecommunication control switch 4, switch bolt 5, cardboard 6, needle tubing 7, negative pressure blood sampling tube 8, liquid level detection subassembly 9, connecting piece 10, electro-magnet 11, induction coil 12, pressure spring 13, electric telescopic handle 14, piston plate 15, cylinder 16, permanent magnet 17.
A quantitative blood sampling system, as shown in fig. 1, includes a venous blood sampling needle, a negative pressure blood sampling tube 8 and a quantitative blood sampling regulating device. Quantitative blood sampling adjusting device includes casing 1, be equipped with the mounting groove that is used for vertical installation negative pressure blood sampling pipe 8 on the 1 left side lateral wall of casing, the inside cavity that is equipped with of casing 1, the cavity bottom is fixed with electro-magnet 11, electro-magnet 11 top is equipped with permanent magnet 17, be fixed with the elastic component between permanent magnet 17 and the cavity top, the sliding tray has been seted up on the lateral wall of mounting groove, sliding tray and cavity intercommunication, sliding tray sliding connection has the liquid level detection subassembly 9 that is used for detecting 8 liquid levels of negative pressure blood sampling pipe on the lateral wall of mounting groove, liquid level detection subassembly 9 passes through connecting piece 10 fixed connection with permanent magnet 17, connecting piece 10 and sliding tray sliding connection, be equipped with quantitative blood sampling controller on casing 1, quantitative blood sampling controller is used for setting for the volume of taking a blood.
Be fixed with cardboard 6 on the mounting groove, cardboard 6 is used for fixed negative pressure blood sampling pipe 8.
The quantitative blood sampling controller comprises a current control module, a touch input module and a touch screen, wherein the touch input module is used for manually inputting a blood sampling amount set value through the touch screen, and the current control module is used for generating irregular current according to the blood sampling amount set value and inputting the irregular current to the electromagnet 11.
The vein blood taking needle is disposable, including blood taking needle, tail needle, the transparent hose of connecting blood taking needle and tail needle, and the tail needle includes needle tubing 7 and syringe needle 3, is equipped with switch bolt 5 on the syringe needle 3, and when switch bolt 5 was in normal condition, the vein blood taking needle switched on with negative pressure blood sampling tube 8.
Fixed bonding is provided with cylinder 16 on the lateral wall in the cavity, cylinder 16 includes piston plate 15, piston plate 15 fixedly connected with electric telescopic handle 14, electric telescopic handle 14 is started by signal control switch 4 control, cylinder 16 passes through air duct 2 intercommunication with the syringe needle 3 of tail needle, signal control switch 4 is used for when receiving the signal of telecommunication and change, control switch bolt 5 is in abnormal condition, switch bolt 5 this moment makes negative pressure blood sampling tube 8 switch on with cylinder 16 promptly.
The liquid level detection component 9 is a non-contact liquid level sensor which is electrically connected with the quantitative blood sampling controller.
The shell 1 is provided with an alarm which is used for controlling the alarm to give an alarm by a quantitative blood sampling controller when the non-contact liquid level sensing detects that the blood in the negative pressure blood sampling tube 8 reaches a set height. The alarm is preferably a buzzer.
The specific implementation process is as follows:
the blood sampling amount set value is manually input through the touch screen, so that the blood sampling amount set value is more conveniently input and more visually displayed. The input current is changed by setting a blood collection amount setting value, for example, a current that changes within a predetermined period is generated, and a stable current is generated after the predetermined period. The variable current is generated in a certain period, the magnetic field generated by the electromagnet 11 is changed, when the adjacent magnetic poles of the permanent magnet 17 and the electromagnet 11 are the same or different, the permanent magnet 17 is moved up or down in the cavity due to the action of like poles repelling or opposite poles attracting, meanwhile, the liquid level detection component 9 is driven to move up and down in the installation groove under the action of the connecting piece 10, so that the installation position of the liquid level detection component 9 is changed, since the adjusted liquid level detection assembly 9 can detect the height of the blood collected in the vacuum tube, moreover, the specifications of the vacuum blood collection tubes are basically consistent, and the vacuum blood collection tubes are kept in a vertical arrangement, so that the quantity of the blood collected in the vacuum tubes can be accurately controlled by determining the height of the collected blood and then converting the height, therefore, the blood volume collected in the vacuum tube can be accurately controlled by setting the set value of the blood collection volume. Stable current is generated after a certain period, the permanent magnet is fixed at a certain position by the electromagnet and is kept still, the accuracy of blood collection amount is improved, and accurate quantitative blood collection is realized. Avoid because of the not enough blood taking volume, can only change new blood taking needle and negative pressure heparin tube 8 and take a blood sample, waste time and energy, still resource-wasting.
The electromagnet 11 is electrified with irregular current, a magnetic field with constantly changing magnetic flux is generated, the induction coil 12 generates induced current with changing current value in the changing magnetic field, when the electric signal received by the electric signal control switch 4 does not change, it is indicated that no current is generated by the induction coil, that is, no electric signal is generated, the magnetic flux in the magnetic field generated by the electromagnet does not change, the controller pushes the permanent magnet to a specified position through the electromagnet, and then the liquid level detection assembly connected with the permanent magnet reaches a specified detection height, blood sampling operation can be carried out, the switch bolt is in a normal state, a vein blood sampling needle is conducted with a negative pressure blood sampling tube, and automatic blood sampling is completed.
Because the vacuum degree of the vacuum blood sampling tube is lack of an effective quantitative detection method, the existence of the vacuum in the vacuum blood sampling tube cannot be distinguished by naked eyes, in the scheme, before blood sampling, the liquid level detection assembly 9 is adjusted by setting a set value of the blood sampling amount, and meanwhile, when the electric signal control switch 4 receives an electric signal to change, the liquid level detection assembly 9 does not reach the specified detection height, the blood sampling operation cannot be carried out, the switch bolt 5 is in an abnormal state, the negative pressure blood sampling tube 8 is communicated with the air cylinder 16, and meanwhile, the electric signal control switch 4 controls the electric telescopic rod 14 to be opened, so that the piston plate 15 moves, the air pressure in the air cylinder 16 is reduced, and because the negative pressure blood sampling tube 8 is communicated with the air cylinder 16, the blood sampling operation can be carried out no matter whether the vacuum degree value of the vacuum blood sampling tube is proper or not, and the waste, not only reduces the blood sampling cost, but also improves the blood sampling effect.
The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (6)
1. Quantitative blood sampling system, its characterized in that: comprises a vein blood taking needle, a negative pressure blood taking tube and a quantitative blood taking adjusting device, the quantitative blood taking adjusting device comprises a shell, the side wall of the shell is provided with a mounting groove for vertically mounting the negative pressure blood sampling tube, a cavity is arranged in the shell, an electromagnet is fixed at the bottom of the cavity, a permanent magnet is arranged above the electromagnet, an elastic part is arranged between the permanent magnet and the top of the cavity, a sliding groove is arranged on the side wall of the mounting groove and is communicated with the cavity, a liquid level detection assembly for detecting the liquid level of the negative pressure blood collection tube is connected on the side wall of the mounting groove in a sliding manner, the liquid level detection assembly is fixedly connected with the permanent magnet through a connecting piece, the connecting piece is connected with the sliding groove in a sliding way, the shell is provided with a quantitative blood sampling controller, the quantitative blood sampling controller is used for setting a set value of a blood sampling amount and controlling the position of the liquid level detection assembly on the sliding groove through an electromagnet;
the quantitative blood sampling controller comprises a current control module, a touch input module and a touch screen, wherein the touch input module is used for manually inputting a blood sampling amount set value through the touch screen, and the current control module is used for generating irregular current according to the blood sampling amount set value and inputting the irregular current to the electromagnet;
the venous blood taking needle comprises a blood taking needle, a tail needle and a transparent hose for connecting the blood taking needle and the tail needle, the tail needle comprises a needle tube and a needle head, a switch bolt is arranged on the needle head, and when the switch bolt is in a normal state, the venous blood taking needle is communicated with the negative pressure blood taking tube;
the quantitative blood sampling controller comprises a switch control module, the switch control module comprises an induction coil, the induction coil is electrically connected with the electric signal control switch and is fixed in the cavity, and when the electric signal control switch cannot receive the electric signal, the switch bolt is controlled to be in a normal state;
be provided with the cylinder in the cavity, the cylinder includes the piston board, piston board fixedly connected with electric telescopic handle, electric telescopic handle is started by signal of telecommunication control switch control, the cylinder passes through the air duct intercommunication with the syringe needle of tail needle, signal of telecommunication control switch is used for when receiving the signal of telecommunication and changes, and control switch bolt is in abnormal condition, and negative pressure heparin tube switches on with the cylinder.
2. The quantitative blood collection system according to claim 1, wherein: the liquid level detection assembly is a non-contact liquid level sensor, and the non-contact liquid level sensor is electrically connected with the quantitative blood sampling controller.
3. The quantitative blood collection system according to claim 2, wherein: the shell is provided with an alarm which is used for controlling the alarm to give an alarm by the quantitative blood sampling controller when the non-contact liquid level sensing detects that the blood in the negative pressure blood sampling tube reaches a set height.
4. The quantitative blood sampling system according to claim 3, wherein: the alarm is a buzzer.
5. The quantitative blood collection system according to claim 1, wherein: the blood taking needle is a disposable blood taking needle.
6. The quantitative blood collection system according to claim 1, wherein: the elastic piece is a pressure spring.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910471238.5A CN110063730B (en) | 2019-05-31 | 2019-05-31 | Quantitative blood sampling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910471238.5A CN110063730B (en) | 2019-05-31 | 2019-05-31 | Quantitative blood sampling system |
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| CN110063730A CN110063730A (en) | 2019-07-30 |
| CN110063730B true CN110063730B (en) | 2021-07-09 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110613463B (en) * | 2019-10-29 | 2021-11-30 | 南京市儿童医院 | Blood sampling device for neonates |
| CN110974256A (en) * | 2019-12-19 | 2020-04-10 | 滨州医学院附属医院 | Clinical medicine clinical laboratory uses vacuum blood sampling device |
| CN111604101B (en) * | 2020-05-29 | 2021-11-02 | 中国人民解放军陆军军医大学第一附属医院 | Selective anticoagulation oscillation storage device |
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|---|---|---|---|---|
| CN102160792A (en) * | 2010-02-22 | 2011-08-24 | 白杰 | Disk-shaped instant vacuum blood sampling method and special-purpose device |
| CN205514627U (en) * | 2016-01-15 | 2016-08-31 | 安徽省肿瘤医院 | Intelligence hemostix |
| CN107411760A (en) * | 2017-09-11 | 2017-12-01 | 成都优瑞商务服务有限公司 | A kind of therapeutic vacuum heparin tube |
| CN107961019A (en) * | 2017-12-15 | 2018-04-27 | 中南大学湘雅医院 | Integrated full-automatic hemostix and blood-sampling method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2511175C (en) * | 2002-12-23 | 2012-02-28 | Werner Ruhl | Body fluid testing device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102160792A (en) * | 2010-02-22 | 2011-08-24 | 白杰 | Disk-shaped instant vacuum blood sampling method and special-purpose device |
| CN205514627U (en) * | 2016-01-15 | 2016-08-31 | 安徽省肿瘤医院 | Intelligence hemostix |
| CN107411760A (en) * | 2017-09-11 | 2017-12-01 | 成都优瑞商务服务有限公司 | A kind of therapeutic vacuum heparin tube |
| CN107961019A (en) * | 2017-12-15 | 2018-04-27 | 中南大学湘雅医院 | Integrated full-automatic hemostix and blood-sampling method |
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