CN204017020U - The high anti-interference drop detecting device of a kind of gravity transfusion system - Google Patents
The high anti-interference drop detecting device of a kind of gravity transfusion system Download PDFInfo
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- CN204017020U CN204017020U CN201420314555.9U CN201420314555U CN204017020U CN 204017020 U CN204017020 U CN 204017020U CN 201420314555 U CN201420314555 U CN 201420314555U CN 204017020 U CN204017020 U CN 204017020U
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- drop
- infrared
- detecting device
- tube
- transfusion system
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Abstract
The utility model discloses the high anti-interference drop detecting device of a kind of gravity transfusion system, comprise body, be arranged on the U-lag on body and be arranged on the infrared tube on U-lag both sides; This body comprises the body center pillar in the middle of being arranged on; Body center pillar front side is provided with the opening consistent with U-lag notch, is respectively equipped with a launch hole and a receiving slit on two sidewalls; Infrared transmitting tube and infrared receiving tube are dislocation and are positioned at respectively in launch hole and receiving slit within the scope of the angle of departure or acceptance angle, in launch hole or receiving slit one near and aim at the drip nozzle mouth place of Murphy's burette, another is in the axial direction away from drip nozzle mouth.Make tilt or rock in situation at certain angle when Murphy's burette, infrared detection line can effectively detect the zero signal that between drop, the neutral gear phase forms, and basis for estimation using the zero signal at interfering signal two ends as drop separation, effectively improve the anti-inclination of drop detecting device, anti-shake kinetic force, has improved the accuracy of drop detection.
Description
Technical field
This utility model relates to a kind of infusion set, belongs to medical instruments field.Particularly relate to a kind of drop detecting device of medical gravity transfusion system.
Background technology
Venous transfusion be clinical in common treatment means.But in infusion treatment process now, transfusion speed is normally controlled the flow velocity of liquid by forwarding manual pulley on tube for transfusion to, it has not only affected the therapeutic effect of expection, and some are needed to the strict responsive patient who controls transfusion speed, even can cause aggravation.
Along with popularizing of infusion test technology, many hospitals have all been equipped with the transfusion device that tool infrared sensing detects.But this transfusion device is still a problem, particularly gravity transfusion system to the detection accuracy of drop, and its environmental impact factor is more complicated.
As shown in Fig. 1 (A) ~ (D), the traditional detection method of infusion liquid drop, is that " infrared emission is to pipe " is to " horizontal arrangement one to one ", thereby forms " the blocking detection line " to drop, to obtain drop pulse signal.Fig. 1 (A) ~ (D) be respectively the one of four states that drop forms initially, drop leaves infrared detection line by separation, drop separation process infrared detection line and drop separation to illustrate and waveform schematic diagram.This figure shows that Murphy's burette 4 is in normal upright position.In the time that drop 5 just forms initial drop 51 from drip nozzle mouth 41, drop 5 does not form and blocks " blocking detection line ", makes this infrared receiving tube 3 receive the signal of infrared transmitting tube 2 completely, is a zero signal in oscillogram.And grow while forming the drop 52 that is about to separate when drop 5 forms, the signal of infrared transmitting tube 2 being launched due to the reflection of rocking generation and the refraction of drop 5 produces and disturbs, and presents interference noise signal in oscillogram.While dripping after drop 5 separates with drip nozzle mouth 41, the drop 53 of separation is to the blocking-up of infrared " blocking detection line " signal formation or focusing.In the time that intravenous medicinal liquid is transparency liquid, drop 5 is lens, and when through red place ray, produce and focus on, in oscillogram, be positive signal; In the time that intravenous medicinal liquid is nontransparent liquid, drop 5 produces and blocks completely when through red place ray, is negative signal in oscillogram; In the time that intravenous medicinal liquid is translucent liquid, drop 5 can not produce completely and block when through red place ray, again can not focusing effect, and in oscillogram, be noise signal.The intravenous medicinal liquid of this figure signal is transparency liquid, is positive signal in oscillogram.Due to the interference noise signal that rocks generation of drop 52 that is about to separate, the judgement that makes to adopt the positive negative signal of Wave crest and wave trough to carry out drop separation will produce mistake, have a strong impact on the accuracy of drop detection.
Publication number is that U.S.'s application for a patent for invention of US20080051732A1 discloses a kind of drop detecting device of monitoring venous transfusion.This checkout gear comprises that one is arranged on the U-shaped folder on the dropper of intravenous transfusion device.One side of this clip is provided with the light source of divergent-ray, in the through hole of the offside of clip, is provided with a hollow cylinder.This hollow cylinder comprises that a diameter is less than the circular hole of the average diameter of the drop by dropper, and on hollow cylinder, the rear end relative with circular hole is provided with an optical sensor, has made to increase the sensitivity that light receives.Structure that this technical scheme is " horizontal arrangement one to one " as above.This technical scheme has certain effect in raising light receiving sensitivity, and it is mainly for the impact of surround lighting.But gravity transfusion system often has more influence factor, as checkout gear is difficult to possess static condition completely, transfusion device is in infusion process, and Murphy's burette exists and rocks, even wide-angle tilt.As shown in Fig. 2 (A) ~ (D), Fig. 2 (A) ~ (D) is respectively that drop forms initially, drop is about to the one of four states signal and the waveform schematic diagram that separate, drop separation is left infrared detection line through infrared detection line and drop separation.In the time that infusion set dropper tilts to exceed 15-20 and spend, now drop, because of gravitation effect, will vertically fall.In the time that drop 5 just forms initial drop 51 from drip nozzle mouth 41, drop 5 does not form and blocks " blocking detection line ", makes this infrared receiving tube 3 receive the signal of infrared transmitting tube 2 completely, is a zero signal in oscillogram.And in the time that drop 5 grows into the drop 52 that is about to separation, disturb due to the signal generation that the reflection of rocking generation and the refraction of drop 5 are launched infrared transmitting tube 2, in oscillogram, present interference noise signal.After drop 5 separates with drip nozzle mouth 41 composition from drop 53 while dripping, due to the inclination of Murphy's burette, make the drop substantial deviation of free-falling, can not " blocking detection line " be formed and be blocked, produce crest or trough signal, thereby cause undetected, flase drop etc.Equally, once transfusion device by people for pulling or touching, will make drop rock under external force, " waft from " detection line, causes undetected, flase drop etc.
Notification number is that the Chinese utility model patent of CN203458648U discloses a kind of double reception formula transfusion harvester, it comprises double reception formula infrared inductor and processor, double reception formula infrared inductor is held on outside the Murphy's burette of transfusion device, the outfan of double reception formula infrared inductor is electrically connected with processor, described double reception formula infrared inductor comprises infrared transmitter and two infrared remote receivers in same horizontal plane, two infrared remote receivers respectively with infrared transmitter wireless connections.This utility model adopts double reception formula transfusion harvester, and induction area increases, and has improved to a certain extent the accuracy that dropping liquid detects.But because this harvester is still with the setting of prior art, away from the drip nozzle of Murphy's burette, it still can not solve that Murphy's burette tilts and problem is adopted in the leakage that produces.
Utility model content
The technical problems to be solved in the utility model is to provide the high anti-interference drop detecting device of a kind of gravity transfusion system, it is by changing the arrangement of existing harvester, make gravity transfusion system there is the anti-interference advantage of the high resistance anti-shake moving height of inclination, improve the acquisition rate of Murphy's burette drop signal.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: the high anti-interference drop detecting device of a kind of gravity transfusion system, comprise body, and be arranged on the U-lag on body and be arranged on the infrared tube on U-lag both sides; Described body comprises the body center pillar in the middle of being arranged on; Described body center pillar front side is provided with the opening consistent with described U-lag notch, is respectively equipped with a launch hole and a receiving slit on two sidewalls; The infrared transmitting tube of described infrared tube and infrared receiving tube are dislocation and are positioned at respectively in described launch hole and receiving slit within the scope of the angle of departure of infrared transmitting tube or the acceptance angle of infrared receiving tube, in described launch hole or receiving slit one near and aim at the drip nozzle mouth place of Murphy's burette, another is in the axial direction away from described drip nozzle mouth.Shift to install by this, make tilt or rock in situation at certain angle when Murphy's burette, the infrared detection line that infrared transmitting tube and infrared receiving tube form can effectively detect the zero signal that between drop, the neutral gear phase forms, and adopt the zero signal at interfering signal two ends as the basis for estimation of drop separation, effectively improve the anti-inclination of drop detecting device, anti-shake kinetic force, has improved the accuracy of drop detection.
As the preferred technical scheme of one, described launch hole is a circular port, near and aim at the drip nozzle mouth place of Murphy's burette; Described receiving slit is the arcuate groove of an opening upwards.Thereby effectively improve the capacity of resisting disturbance of device.
As the preferred technical scheme of one, the centerline of described arcuate groove two tops and described launch hole is in same plane.Thereby the distance that makes infrared transmitting tube arrive each infrared receiving tube approaches as much as possible, improve the anti-ability that tilts forward and back and rock of device simultaneously.
Particularly, described infrared receiving tube is three, is down isosceles triangle and is positioned at two tops and the bottom of described receiving slit arc.Make most economically to improve the capacity of resisting disturbance of device.
Can accurately aim at infrared transmitting tube for the drip nozzle of the Murphy's burette that makes different size, described body also comprises a upper cover; On described, be covered with the open front consistent with described U-lag notch, and be provided with in described upper cover the inner and be axially downward adjustment screw.
In order to make to be convenient to the security set of the filler pipe on Murphy's burette, the top of described upper cover is provided with a conical indentation.
For the high anti-interference drop detecting device of this gravity transfusion system, its detection method adopting comprises: one, make arranging of infrared tube all signals of drop can be detected; This signal comprises the zero signal that not stopped by drop and the disturbing signal that stopped by drop; Two, record the signal that drop gathers; Three, according to the zero signal at disturbing signal two ends as the foundation that is judged as drop and separates with drip nozzle.Device by the method in conjunction with this structure, the anti-inclination that has effectively improved drop detecting device, anti-shake kinetic force, has improved the accuracy of drop detection.
This utility model is by infrared tube being to the structure shifting to install, and changes the Wave crest and wave trough signal that utilizes that adopted for a long time and carry out the determination methods of drop detection, and adopts the detection determination methods of zero signal.Any disturbing signal between two zero signals has been got rid of in the combination of this structure and the method, has effectively improved the anti-inclination of drop detecting device, and anti-shake kinetic force has improved the accuracy of drop detection.
Brief description of the drawings
Fig. 1 is drop detection schematic diagram in prior art, and in figure, Murphy's burette is normal position; Fig. 1 (A) ~ (D) be respectively the one of four states that drop forms initially, drop leaves infrared detection line by separation, drop separation process infrared detection line and drop separation to illustrate and waveform schematic diagram.
Fig. 2 is drop detection schematic diagram in prior art, and in figure, Murphy's burette is obliquity; Fig. 2 (A) ~ (D) be respectively the one of four states that drop forms initially, drop leaves infrared detection line by separation, drop separation process infrared detection line and drop separation to illustrate and waveform schematic diagram.
Fig. 3 is structural representation of the present utility model.
Fig. 4 is structural representation of the present utility model, has removed body base in figure.
Fig. 5 is that front-view schematic diagram is arranged in the dislocation of infrared transmitting tube and infrared receiving tube in this utility model.
Fig. 6 is that the dislocation of infrared transmitting tube and infrared receiving tube in this utility model arranges that the right side looks schematic diagram.
Fig. 7 is anti-interference principle schematic of the present utility model, and in figure, Murphy's burette is normal position; Fig. 7 (A) ~ (D) be respectively the one of four states that drop forms initially, drop leaves infrared detection line by separation, drop separation process infrared detection line and drop separation to illustrate and waveform schematic diagram.
Fig. 8 is anti-interference principle schematic of the present utility model, and in figure, Murphy's burette is to receiving tube lopsidedness position; Fig. 8 (A) ~ (D) be respectively the one of four states that drop forms initially, drop leaves infrared detection line by separation, drop separation process infrared detection line and drop separation to illustrate and waveform schematic diagram.
Fig. 9 is anti-interference principle schematic of the present utility model, and in figure, Murphy's burette is to transmitting tube lopsidedness position; Fig. 9 (A) ~ (D) be respectively the one of four states that drop forms initially, drop leaves infrared detection line by separation, drop separation process infrared detection line and drop separation to illustrate and waveform schematic diagram.
Figure 10 is anti-interference principle schematic of the present utility model, and in figure, Murphy's burette is tilted with the plane of infrared tube place Plane intersects; Figure 10 (A) ~ (D) be respectively the one of four states that drop forms initially, drop leaves infrared detection line by separation, drop separation process infrared detection line and drop separation to illustrate and waveform schematic diagram.
Wherein: body 1, body base 11, body center pillar 12, upper cover 13, adjust screw 14, launch hole 15, receiving slit 16, infrared transmitting tube 2, infrared receiving tube 3, Murphy's burette 4, drip nozzle 41, drop 5, form initial drop 51, be about to the drop 52 separating, the drop 53 separating.
Detailed description of the invention
Below by specific embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is further described specifically:
Referring to Fig. 3 and Fig. 4, the high anti-interference drop detection structure of a kind of gravity transfusion system, comprises the body 1 Murphy's burette 4 of gravity transfusion system being clamped by a U-lag and is arranged in body 1 and is positioned the infrared tube on U-lag both sides.This body 1 comprise a formation housing main body body base 11, be arranged on the body center pillar 12 in the middle of this body base 11 and be arranged on the upper cover 13 at these body center pillar 12 upper opening places.In this body base 11, be provided with the circuit board (not shown) of checkout gear, body base 11 above on be provided with corresponding control key and display screen (not shown).
This body center pillar 12 is the circular tube structure of front openings up/down perforation, and the curved reducing of upper end open is also provided with two screw holes, is provided with and adjusts screw 14 in screw hole.The cross section of this body center pillar 12 takes the shape of the letter U, and makes intravenous Murphy's burette 4 snap in and make this checkout gear card to hang on Murphy's burette 4.On the two side of body center pillar 12, offer respectively launch hole 15 and receiving slit 16.The infrared transmitting tube 2 and the infrared receiving tube 3 that are arranged on the circuit board in body base 11 are separately positioned in this launch hole 15 and receiving slit 16.This launch hole 15 is a circular hole, and this receiving slit 16 is the arcuate groove of an opening upwards.Referring to Fig. 5 and Fig. 6, in the present embodiment, this infrared transmitting tube 2 that is arranged in launch hole 15 is one, and this red place receiving tube 3 that is arranged in receiving slit 16 is three, in the receiving slit 16 of this arc, is the word arrangement of falling product.Two tops of this arcuate groove and the centerline of launch hole 15 be in sustained height, and these three infrared receiving tubes 3 are all within the scope of the angle of departure in infrared transmitting tube 2.These three red place receiving tubes 3 are the arrangement of falling isosceles triangle, form dislocation with infrared transmitting tube 2.The setting of this dislocation and the anti-angle of inclination of device have certain associated, and infrared transmitting tube 2 is less than desired anti-inclination angle with the line of infrared receiving tube 3 and the angle of infrared transmitting tube centrage horizontal plane of living in.In the present embodiment, be 2.5mm in infrared receiving tube 3 and the distance of infrared transmitting tube 2 centrage horizontal plane of living in of these receiving slit 16 bottoms, angle is 15 degree; The infrared receiving tube 3 on these 16 liang of tops of receiving slit is 9.5 degree with the angle of infrared transmitting tube 2.The average diameter of considering drop is about 6mm, and the anti-tilt capability of the checkout gear of this embodiment is about 45 degree.
Referring to Fig. 7 (A) ~ (D), this figure shows that Murphy's burette 4 is in normal upright position.In the time that drop 5 just forms initial drop 51 from drip nozzle mouth 41, because the red place receiving tube 3 in receiving slit 16 bottoms is up and down and shifts to install with infrared transmitting tube 2, drop 5 does not form and blocks red place transmitting tube 2, make this infrared receiving tube 3 receive the signal of infrared transmitting tube 2 completely, be a zero signal in oscillogram.And grow while forming the drop 52 that is about to separate when drop 5 forms, the signal of infrared transmitting tube 2 being launched due to reflection and the refraction of drop 5 produces and disturbs, and presents interference noise signal in oscillogram.While dripping after drop 5 separates with drip nozzle mouth 41, the drop 53 of separation is to infrared signal blocking-up or focusing.In the time that intravenous medicinal liquid is transparency liquid, drop 5 is lens, and when through red place ray, produce and focus on, in oscillogram, be positive signal; In the time that intravenous medicinal liquid is nontransparent liquid, drop 5 produces and blocks completely when through red place ray, is negative signal in oscillogram; In the time that intravenous medicinal liquid is translucent liquid, drop 5 can not produce completely and block when through red place ray, again can not focusing effect, and in oscillogram, be noise signal.In the present embodiment, this intravenous medicinal liquid is transparency liquid.Therefore, as adopt tradition to utilize the positive signal of Wave crest and wave trough and negative signal cannot differentiate the determination methods of signal, had a strong impact on the accuracy of drop detection.The determination methods that this utility model adopts is infrared-ray not to be produced and stops or focus on according to drop 5, zero signal while being neutral gear judges, and avoid any waveshape signal between two zero signals completely, therefore, it is the impact of signal completely without interruption, has greatly improved the accuracy of drop detection.
Referring to Fig. 8 (A) ~ (D), this figure shows that Murphy's burette is receiving tube 3 lopsidedness to red place.In the time that drop 5 just forms initial drop 51 from drip nozzle mouth 41, because the red place receiving tube 3 in receiving slit 16 bottoms is up and down and shifts to install with infrared transmitting tube 2, drop 5 does not form and blocks red place transmitting tube 2, make this infrared receiving tube 3 receive the signal of infrared transmitting tube 2 completely, be a zero signal in oscillogram.And in the time that drop 5 grows into the drop 52 that is about to separation, disturb due to the signal generation that reflection and the refraction of drop 5 are launched infrared transmitting tube 2, in oscillogram, present interference noise signal.After drop 5 separates with drip nozzle mouth 41 composition from drop 53 while dripping, the transparent drop of the present embodiment produces and focuses on infrared signal, is positive signal in oscillogram.
Referring to Fig. 9 (A) ~ (D), this figure shows that Murphy's burette is transmitting tube 2 lopsidedness to red place.This situation and Fig. 8 (A) ~ (D) identical, do not repeat them here.
Referring to Figure 10 (A) ~ (D), this figure shows that Murphy's burette, tilted with the plane of infrared tube place Plane intersects, tilts forward and back.In the time that drop 5 just forms initial drop 51 from drip nozzle mouth 41, owing to being and being oppositely arranged at two red place receiving tubes 3 on receiving slit 16 tops, make this infrared receiving tube 3 receive the signal of infrared transmitting tube 2 completely, in oscillogram, be a zero signal.And in the time that drop 5 grows into the drop 52 that is about to separation, disturb due to the signal generation that reflection and the refraction of drop 5 are launched infrared transmitting tube 2, in oscillogram, present interference noise signal.After drop 5 separates with drip nozzle mouth 41 composition from drop 53 while dripping the detection line forming through infrared transmitting tube 2 and the infrared receiving tube 3 of receiving slit 16 inclination one end, top, the transparent drop of the present embodiment produces and focuses on infrared signal, is positive signal in oscillogram.
Adopt the high anti-interference drop detection method of gravity transfusion system of the high anti-interference drop detection structure of above-mentioned gravity transfusion system, one, the infrared transmitting tube of infrared tube and infrared receiving tube are shift to install, all signals of drop can be detected; This signal comprises the zero signal that not stopped by drop 5 and the disturbing signal that stopped by drop 5; Two, record the signal that drop 5 gathers; Three, according to the zero signal at disturbing signal two ends as the foundation that is judged as drop 5 and separates with drip nozzle 41.The last drop 5 that is formed as of this zero signal leaves infrared detection line, neutral gear when then the initial drop 51 of a formation not yet grows; The negative signal or positive signal or the noise signal that are formed as the noise signal interference of infrared detection line being produced by the drop 52 separating and the drop separating 53 process infrared detection lines generations of this disturbing signal.
Specific embodiment is in order more clearly to understand this utility model, not as the one restriction to this utility model right, do not departing under the prerequisite of this utility model aim, can have various variations, all these to the apparent amendment of described those skilled in the art by within being included in the scope of this claim.
Claims (8)
1. the high anti-interference drop detecting device of gravity transfusion system, comprises body, is arranged on the U-lag on body and is arranged on the infrared tube on U-lag both sides; It is characterized in that: described body comprises the body center pillar in the middle of being arranged on; Described body center pillar front side is provided with the opening consistent with described U-lag notch, is respectively equipped with a launch hole and a receiving slit on two sidewalls; The infrared transmitting tube of described infrared tube and infrared receiving tube are dislocation and are positioned at respectively in described launch hole and receiving slit within the scope of the angle of departure of infrared transmitting tube or the acceptance angle of infrared receiving tube, in described launch hole or receiving slit one near and aim at the drip nozzle mouth place of Murphy's burette, another is in the axial direction away from described drip nozzle mouth.
2. the high anti-interference drop detecting device of gravity transfusion system according to claim 1, is characterized in that: described launch hole is a circular port, near and aim at the drip nozzle mouth place of Murphy's burette; Described receiving slit is the arcuate groove of an opening upwards.
3. the high anti-interference drop detecting device of gravity transfusion system according to claim 2, is characterized in that: the centerline of described arcuate groove two tops and described launch hole is in same plane.
4. according to the high anti-interference drop detecting device of gravity transfusion system described in claim 2 or 3, it is characterized in that: described infrared receiving tube is three, be down isosceles triangle and be positioned at two tops and the bottom of described receiving slit arc.
5. according to the high anti-interference drop detecting device of the gravity transfusion system described in claim 1 or 2 or 3, it is characterized in that: described body also comprises a upper cover; On described, be covered with the open front consistent with described U-lag notch, and be provided with in described upper cover the inner and be axially downward adjustment screw.
6. the high anti-interference drop detecting device of gravity transfusion system according to claim 4, is characterized in that: described body also comprises a upper cover; On described, be covered with the open front consistent with described U-lag notch, and be provided with in described upper cover the inner and be axially downward adjustment screw.
7. the high anti-interference drop detecting device of gravity transfusion system according to claim 5, is characterized in that: the top of described upper cover is provided with a conical indentation.
8. the high anti-interference drop detecting device of gravity transfusion system according to claim 6, is characterized in that: the top of described upper cover is provided with a conical indentation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420314555.9U CN204017020U (en) | 2014-06-13 | 2014-06-13 | The high anti-interference drop detecting device of a kind of gravity transfusion system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420314555.9U CN204017020U (en) | 2014-06-13 | 2014-06-13 | The high anti-interference drop detecting device of a kind of gravity transfusion system |
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| CN204017020U true CN204017020U (en) | 2014-12-17 |
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| CN201420314555.9U Expired - Fee Related CN204017020U (en) | 2014-06-13 | 2014-06-13 | The high anti-interference drop detecting device of a kind of gravity transfusion system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023024167A1 (en) * | 2021-08-25 | 2023-03-02 | 赛若麦得（上海）生物技术有限公司 | Drip sensor |
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2014
- 2014-06-13 CN CN201420314555.9U patent/CN204017020U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023024167A1 (en) * | 2021-08-25 | 2023-03-02 | 赛若麦得（上海）生物技术有限公司 | Drip sensor |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20180613 |
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| CF01 | Termination of patent right due to non-payment of annual fee |