CN203163674U - Injection syringe cylinder diameter measuring device and injection pump - Google Patents
Injection syringe cylinder diameter measuring device and injection pump Download PDFInfo
- Publication number
- CN203163674U CN203163674U CN 201320143412 CN201320143412U CN203163674U CN 203163674 U CN203163674 U CN 203163674U CN 201320143412 CN201320143412 CN 201320143412 CN 201320143412 U CN201320143412 U CN 201320143412U CN 203163674 U CN203163674 U CN 203163674U
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- China
- Prior art keywords
- measuring device
- diameter measuring
- injector syringe
- rotating shaft
- magnet
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model provides an injection syringe cylinder diameter measuring device and an injection pump. The injection syringe cylinder diameter measuring device comprises a clamping piece, a rotating shaft, a magnetic induction assembly, a circuit module, a bearing and an elastic body, wherein the clamping piece is used for clamping an injection syringe cylinder, an end part of the rotating shaft is fixedly connected with the clamping piece, the magnetic induction assembly is arranged at the other end part of the rotating shaft and used for measuring the opening and closing angle of the clamping piece, the circuit module is electrically connected with the magnetic induction assembly and used for processing signals fed back by the magnetic induction assembly so as to measure the diameter of the injection syringe cylinder, the bearing supports the rotating shaft, and the elastic body controls springback of the rotating shaft. The injection pump comprises a screw rod, a sliding block and a pump body provided with a cavity, wherein the sliding block is arranged at the end part of the screw rod and in transmission connection with the screw rod, the screw rod penetrates through and arranged in the cavity of the pump body, and the sliding block presses against the inner wall of the cavity of the pump body. The injection pump further comprises the injection syringe cylinder diameter measuring device. The injection syringe cylinder diameter measuring device provided by the utility model measures in a non-contact manner, the reliability is better, and the service life is longer.
Description
Technical field
The utility model belongs to field of measuring technique, relates in particular to a kind of injector syringe diameter measuring device and syringe pump.
Background technology
The flow velocity control of syringe pump is one of gordian technique of syringe pump, the flow velocity of medicine injection is related to the injection volume of medicine, thereby be directly connected to patient's life security, and the diameter of the speed that syringe piston moves and injector syringe has determined the flow velocity of syringe pump, in the case, need measure the diameter of injector syringe.
Measurement for the diameter of injector syringe, the present domestic overwhelming majority's syringe pump all adopts rotational potentiometer to measure the diameter of syringe, though potentiometer is simple in structure, low price, but its linearity is bad, and because potentiometer adopts electric brush type to be electrically connected, and brush weares and teares easily, cause reliability decrease, repair rate height, brush easy to wear also influence its serviceable life; Further, the potentiometer rotating shaft adopts the keyway formula to be connected with the physical construction of measuring the syringe diameter, and parts mostly are plastic processing and form, concentricity is wayward, causes the keyway wearing and tearing easily, produces the gap, thereby cause error easily when measuring the syringe diameter, degree of accuracy is not high.
The utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, the higher injector syringe diameter measuring device of a kind of reliability is provided and has been equiped with the syringe pump of this injector syringe diameter measuring device.
The utility model is achieved in that a kind of injector syringe diameter measuring device, be located at and be used on the syringe pump diameter of injector syringe is measured, comprise the holder for the described injector syringe of clamping, the rotating shaft of fixedlying connected with described holder in the end, be located at described rotating shaft the other end place be used for measure described holder the folding corner the magnetic strength assembly and electrically connect with described magnetic strength assembly and the signal that feeds back for the treatment of described magnetic strength assembly to calculate the circuit module of described injector syringe diameter, also comprise for the bearing that supports described rotating shaft and be sheathed on the elastic body that is used for the described rotating shaft resilience of control in the described rotating shaft.
Particularly, described magnetic strength assembly comprises the magnet of being located at described roller end and the Magnetic Sensor that is oppositely arranged, is used for the described magnet magnetic strength variation of induction with described magnet, and described Magnetic Sensor and described circuit module electrically connect.
More specifically, described magnet and the coaxial setting of described Magnetic Sensor.
Particularly, described Magnetic Sensor is anisotropic magnetoresistive sensor, giant magneto-resistance sensor or Hall element.
Particularly, described magnet is bipolar magnet or multi-pole magnet.
Particularly, described elastic body is spring.
A kind of syringe pump, comprise screw mandrel, slide block and have the pump housing of inner chamber, described slide block is located at the end of described screw mandrel and is in transmission connection with it, described screw mandrel is arranged in the inner chamber of the described pump housing, the interior cavity wall of described slide block and the described pump housing offsets, and also comprises above-mentioned injector syringe diameter measuring device.
Particularly, the bearing of described injector syringe diameter measuring device is arranged on the described pump housing, the described pump housing has an arc-shaped concave of replacing mutually with the extrados of described injector syringe, and the clamping workplace of the arc-shaped concave of the described pump housing and described holder arranges in opposite directions.
The injector syringe diameter measuring device that the utility model provides, it arranges a holder clamping injector syringe, and then by being set, the magnetic strength assembly measures the angle that this holder turns over when the clamping injector syringe, by the geometric relationship of corner and syringe diameter, thereby utilize the circuit module that electrically connects with the magnetic strength assembly finally to calculate the injector syringe diameter indirectly.The injector syringe diameter measuring device that the utility model provides, it compares the mode that existing rotational potentiometer is measured the injector syringe diameter, and it adopts non-contact measurement, can avoid brush contact measurement of the prior art defective easy to wear, its better reliability, longer service life.
Further, the utility model also provides a kind of syringe pump, this syringe pump is provided with above-mentioned injector syringe diameter measuring device, thereby can record the syringe diameter of the syringe on this syringe pump by this injector syringe diameter measuring device, and then the flow velocity of controlled injection pump, its good reliability, the degree of accuracy height.
Description of drawings
Fig. 1 is the exploded perspective view of the injector syringe diameter measuring device that provides of the utility model embodiment;
Fig. 2 is the overall schematic of the injector syringe diameter measuring device that provides of the utility model embodiment;
Fig. 3 is the cross-sectional schematic of the syringe pump that provides of the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
As depicted in figs. 1 and 2, a kind of injector syringe diameter measuring device that provides for the utility model embodiment, being used for of the place, the other end that comprise holder 2 for clamping injector syringe 11, the rotating shaft 3 fixedlyed connected with holder 2 in the end, is located at rotating shaft 3 measure the magnetic strength assembly 4 of holder 2 folding corners and electrically connect with magnetic strength assembly 4 and the signal that feeds back for the treatment of magnetic strength assembly 4 with the circuit module 5 of measuring and calculating injector syringe 11 diameters, also comprise for the bearing 6 of supporting revolving shaft 3 and be sheathed on the elastic body 7 that is used for control rotating shaft 3 resiliences in the rotating shaft 3.The injector syringe diameter measuring device that the utility model provides, it is by arranging the syringe of holder clamping syringe, folding corner when one magnetic strength assembly being set measuring holder clamping injector syringe, and then a circuit module that electrically connects with the magnetic strength assembly is set responds to this angle and change, according to the geometric relationship of corner and injector syringe diameter and then calculate the diameter of injector syringe, because it is to measure the injector syringe diameter by the mode of the non-cpntact measurement of magnetic strength assembly, compare existing rotational potentiometer and measure the mode of injector syringe diameter, can avoid the easy wear problems of contact measurement mode brush, can reduce repair rate greatly, its reliability is higher, and the life-span is longer.
Particularly, magnetic strength assembly 4 comprises the Magnetic Sensor 42 that the magnet 41 of being located at place, rotating shaft 3 ends and the magnetic strength that is oppositely arranged, is used for sensor magnet 41 with magnet 41 change, and Magnetic Sensor 42 electrically connects with circuit module 5, and magnet 41 is fixedlyed connected with rotating shaft 3;
Principle of work of the present utility model is: when holder 2 not during clamping injector syringe 11, it is in the first closure state under the effect of elastic body 7, and when holder 2 clamping injector syringes, it can produce a folding rotational angle, because holder 2 is fixedlyed connected with the end of rotating shaft 3, so the folding angle of holder 2 is the angle that rotating shaft 3 is rotated, and magnet 41 is fixedlyed connected with rotating shaft 3, when so rotating shaft 3 is rotated, magnet 41 will rotate along with the rotation of rotating shaft 3, the rotation of magnet 41 will cause the impedance of the Magnetic Sensor 42 that is oppositely arranged with it or the variation of electric signal, according to the variation of this impedance or electric signal, circuit module 5 can go out the diameter of injector syringe 11 according to funtcional relationship and geometric relationship indirect calculation.
More accurate for the outer corner measurement that makes magnet 41 relative Magnetic Sensors 42, Magnetic Sensor 42 and magnet 41 be coaxial arrange preferable, to guarantee to have good concentricity.
Particularly, Magnetic Sensor 42 can be any in anisotropic magnetoresistive sensor, giant magneto-resistance sensor or the Hall element.
Particularly, magnet 41 is bipolar magnet or multi-pole magnet.
Further, elastic body 7 can be spring.
The utility model also provides a kind of syringe pump, as shown in Figure 3, the pump housing 12 that it comprises screw mandrel 13, slide block 14 and has inner chamber, slide block 14 is located at the end of screw mandrel 13 and is in transmission connection with it, screw mandrel 13 is arranged in the inner chamber of the pump housing 12, slide block 14 offsets with the interior cavity wall of the pump housing 12, and this syringe pump also comprises above-mentioned injector syringe diameter measuring device.
Particularly, simultaneously referring to Fig. 1 and Fig. 2, the bearing 6 of injector syringe diameter measuring device is arranged on the pump housing 12, the pump housing 12 has an arc-shaped concave 120 of replacing mutually with the extrados 110 of injector syringe 11, the arc-shaped concave 120 of the pump housing arranges in opposite directions with the clamping workplace 21 of holder 2, so that the arc-shaped concave 120 of holder 2 and the pump housing 12 clamps injector syringe 11 jointly, by above-mentioned injector syringe diameter measuring device, thereby this syringe pump can be realized the measurement to the injector syringe diameter.
Below only be preferred embodiment of the present utility model, not in order to limiting the utility model, all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace or improvement etc., all should be included within the protection domain of the present utility model.
Claims (8)
1. injector syringe diameter measuring device, be located at and be used on the syringe pump diameter of injector syringe is measured, it is characterized in that: comprise the holder for the described injector syringe of clamping, the rotating shaft of fixedlying connected with described holder in the end, be located at described rotating shaft the other end place be used for measure described holder the folding corner the magnetic strength assembly and electrically connect with described magnetic strength assembly and the signal that feeds back for the treatment of described magnetic strength assembly to calculate the circuit module of described injector syringe diameter, also comprise for the bearing that supports described rotating shaft and be sheathed on the elastic body that is used for the described rotating shaft resilience of control in the described rotating shaft.
2. injector syringe diameter measuring device as claimed in claim 1, it is characterized in that: described magnetic strength assembly comprises the magnet of being located at described roller end and the Magnetic Sensor that is oppositely arranged, is used for the described magnet magnetic strength variation of induction with described magnet, and described Magnetic Sensor and described circuit module electrically connect.
3. injector syringe diameter measuring device as claimed in claim 2 is characterized in that: described magnet and the coaxial setting of described Magnetic Sensor.
4. injector syringe diameter measuring device as claimed in claim 2, it is characterized in that: described Magnetic Sensor is anisotropic magnetoresistive sensor, giant magneto-resistance sensor or Hall element.
5. injector syringe diameter measuring device as claimed in claim 2, it is characterized in that: described magnet is bipolar magnet or multi-pole magnet.
6. injector syringe diameter measuring device as claimed in claim 1, it is characterized in that: described elastic body is spring.
7. syringe pump, comprise screw mandrel, slide block and have the pump housing of inner chamber, described slide block is located at the end of described screw mandrel and is in transmission connection with it, described screw mandrel is arranged in the inner chamber of the described pump housing, the interior cavity wall of described slide block and the described pump housing offsets, and it is characterized in that: also comprise each described injector syringe diameter measuring device as claim 1-6.
8. syringe pump as claimed in claim 7, it is characterized in that: the bearing of described injector syringe diameter measuring device is arranged on the described pump housing, the described pump housing has an arc-shaped concave of replacing mutually with the extrados of described injector syringe, and the clamping workplace of the arc-shaped concave of the described pump housing and described holder arranges in opposite directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320143412 CN203163674U (en) | 2013-03-26 | 2013-03-26 | Injection syringe cylinder diameter measuring device and injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320143412 CN203163674U (en) | 2013-03-26 | 2013-03-26 | Injection syringe cylinder diameter measuring device and injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203163674U true CN203163674U (en) | 2013-08-28 |
Family
ID=49024852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320143412 Expired - Fee Related CN203163674U (en) | 2013-03-26 | 2013-03-26 | Injection syringe cylinder diameter measuring device and injection pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203163674U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015124081A1 (en) * | 2014-02-20 | 2015-08-27 | 江苏多维科技有限公司 | Precise syringe pump and manufacturing method thereof |
| US10232109B2 (en) | 2014-04-14 | 2019-03-19 | MultiDimension Technology Co., Ltd. | Mini lead screw pump utilizing a magnetoresistive sensor and manufacturing method thereof |
| CN109568718A (en) * | 2019-01-25 | 2019-04-05 | 深圳市乐创享科技有限公司 | A kind of syringe pump |
-
2013
- 2013-03-26 CN CN 201320143412 patent/CN203163674U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015124081A1 (en) * | 2014-02-20 | 2015-08-27 | 江苏多维科技有限公司 | Precise syringe pump and manufacturing method thereof |
| US10238793B2 (en) | 2014-02-20 | 2019-03-26 | Multidimension Technology Co., Ltd | Precision syringe pump and manufacturing method thereof |
| US10232109B2 (en) | 2014-04-14 | 2019-03-19 | MultiDimension Technology Co., Ltd. | Mini lead screw pump utilizing a magnetoresistive sensor and manufacturing method thereof |
| CN109568718A (en) * | 2019-01-25 | 2019-04-05 | 深圳市乐创享科技有限公司 | A kind of syringe pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20210326 |