CN202961316U - Heparin pump - Google Patents
Heparin pump Download PDFInfo
- Publication number
- CN202961316U CN202961316U CN 201220616389 CN201220616389U CN202961316U CN 202961316 U CN202961316 U CN 202961316U CN 201220616389 CN201220616389 CN 201220616389 CN 201220616389 U CN201220616389 U CN 201220616389U CN 202961316 U CN202961316 U CN 202961316U
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- CN
- China
- Prior art keywords
- contiguous block
- nut
- heparin pump
- heparin
- motor
- Prior art date
- 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.)
- Expired - Lifetime
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a heparin pump. The heparin pump comprises a shell, a rack, a stepping motor, a control circuit board of the stepping motor, a screw rod, a screw rod nut, a guide rail and a sliding block connecting block, wherein the rack is fixedly arranged in the shell; the stepping motor and the control circuit board are arranged on a motor installation board of the rack; one tail end of the screw rod is directly connected with a driving shaft of the stepping motor, and the other tail end of the screw rod is connected with a supporting sleeve in a supporting way; the screw rod nut is connected to the screw rod in a screwing way, and the screw rod nut is fixedly arranged on a nut connecting block; the guide rail is fixedly arranged on a side board of the rack; the sliding block connecting block is arranged on the guide rail; and a spring which has preset pressure is compressed in an inner hole of the sliding block connecting block by the nut connecting block through an axial check ring, and one tail end of the sliding block connecting block is fixedly connected with a push rod which is used for directly pushing an injector which is in matching use with the heparin pump. The heparin pump provided by the utility model has a simple and reliable structure and has the functions of alarming in conditions of blocking and empty liquid and combining slow heparin injection and quick heparin injection.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments of automatic injection, especially relates to a kind of heparin pump for blood purification.
Background technology
Heparin pump is a vitals in haemodialysis control unit, and the micro-injection pump that heparin pump is equivalent to use clinically is in order to continue injecting heparin in the patient blood.Because blood in dialysis procedure contacts with air in extracorporeal circulation, blood coagulation easily occurs, use heparin to prevent blood coagulation.Wherein heparin is clinical anticoagulant commonly used, can prevent that Hemostatic Oral Liquid solidifies in external pipeline.
In recent years, along with the fast development of hemodialysis is also more and more higher to the requirement of heparin pump.At present blood purification generally adopts gear drive with heparin pump or drives with the mode of transmission, and the deficiency that these kinds of drive exist is:
1. complex structure, parts are numerous, reliability decrease.
2. high to parts machined precision prescribed, the assembling difficulty.
3. difficulty has realized the functions such as obstruction, empty liquid warning.
4. owing to adopting gear drive or band transmission, so same heparin pump is difficult to realize simultaneously the function of slow injection heparin and fast injection.
The utility model content
It is a kind of simple and reliable for structure that technical problem to be solved in the utility model is to provide, and has the heparin pump that obstruction, empty liquid are reported to the police and integrated slow injection heparin and fast injection heparin function.
This utility model adopts following technical scheme to realize: a kind of heparin pump, and it comprises: shell; Be fixed on the frame in shell; Be arranged on motor and control circuit board thereof on the motor mounting plate of frame; One end directly is connected with the driving shaft of motor, the screw mandrel of another end and support set support and connection; Be screwed together feed screw nut on screw mandrel, and the feed screw nut is fixed on the nut contiguous block; Be fixed on the guide rail on the side plate of frame, and be arranged on the slide block contiguous block on guide rail; The nut contiguous block will have the spring-compressed of a preset pressure in the endoporus of slide block contiguous block by axial back-up ring, and an end of slide block contiguous block is fixedly connected with a push rod for the syringe that directly promotes to be used in conjunction with heparin pump.
Wherein, adopt the seam positioning connection structure between motor and motor mounting plate.
Wherein, have the gap between the end of support set and leading screw, and be over-surplus fit structure between the rear plate of support set and frame.
Wherein, the end of leading screw is equipped with the coding disk for detection of rotary speed.
Wherein, offer a fixing hole on the nut contiguous block, the steady pin of slide block contiguous block inserts in the fixing hole of nut contiguous block.
Wherein, be fixed with baffle plate on the nut contiguous block, be fixed with on the slide block contiguous block for the checkout gear that stops up or empty liquid detects.
Wherein, have detent on baffle plate, be provided with corresponding tongue on the nut contiguous block, and tongue is fixed among detent.
Wherein, the photoswitch of checkout gear for being used in conjunction with the end of baffle plate.
Wherein, also comprise: when being used for end at baffle plate and stretching among photoswitch, controlled circuit board is controlled the alarm device that sends alarm signal, and this alarm device connects control circuit board.
Compared with prior art, the utlity model has following beneficial effect:
1, the heparin pump that the utility model proposes uses step-by-step linear electric motor, by the mode of motor direct-drive feed screw nut, thereby simplify the structure of motor transmission system, reduced the complexity that reduces motor transmission system, and be easy to install, improved the reliability of heparin pump.
2, the heparin pump that the utility model proposes uses the step-by-step linear electric motor transmission to control, and the pulse signal frequency that only needs to change motor just can change motor rotation speed, just can realize the function of slow injection heparin or fast injection heparin.
3, the simple structure of using the heparin pump that the utility model proposes realizes stopping up and empty liquid is reported to the police, when if obstruction or empty liquid occur, push rod pushes away motionless syringe, push rod and slide block contiguous block are rigidly connected, the slide block contiguous block is also motionless, and motor is contained in the baffle plate on the nut contiguous block rotating drive nut contiguous block Compress Spring, trigger the photoelectric switching signal on the slide block contiguous block, thereby realize reporting to the police.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the A-A cross section view in Fig. 1.
The specific embodiment
In conjunction with illustrated in figures 1 and 2, the utility model proposes a kind of simple and reliable for structure, have the heparin pump that obstruction, empty liquid are reported to the police and integrated slow injection heparin and fast injection heparin function, itself and syringe 2 are used in conjunction with.
specifically, the heparin pump that the utility model proposes comprises: shell 23, be fixed by screws in the frame in shell 23, frame is comprised of motor mounting plate 15, rear plate 21, side plate 16 and base plate 17, rack-mounted motor transmission system, this motor transmission system comprises motor 4 and control circuit board thereof, screw mandrel 11 and feed screw nut 10, motor 4 is fixedly mounted on motor mounting plate 15 by a plurality of screws, and in order to adopt the seam positioning connection structure between the accurate motor 4 of axial location and motor mounting plate 15, one end of screw mandrel 11 directly is connected with the driving shaft of motor 4, another end of leading screw 11 is by support set 14 support and connection, support set 14 has certain gap with leading screw 11, and be over-surplus fit structure between support set 14 and rear plate 21, driving shaft driven rotary by motor 4, and feed screw nut 10 is screwed together on screw mandrel 11, and relatively move with being rotated on screw mandrel 11 of leading screw 11, leading screw 11 ends also are equipped with the coding disk 22 for detection of rotary speed, be screwed the guide rail 19 on side plate 16, fixing a slide block contiguous block 7 that slides on guide rail 19 by screw on guide rail 19, feed screw nut 10 is fixed on nut contiguous block 6 by a plurality of screws, and nut contiguous block 6 is compressed in spring 9 in slide block contiguous block 7 endoporus by axial back-up ring 5, and spring 9 is pressed with certain pressure in advance, be fixed with baffle plate 20 on nut contiguous block 6, be fixed with photoswitch 8 on slide block contiguous block 7, for accurate positioning, have detent 201 on baffle plate 20, corresponding tongue 61 is arranged on nut contiguous block 6, tongue 61 is fixed among detent 201, and an end of slide block contiguous block 7 is fixed with push rod 1, the direct pushing syringe 2 of push rod 1.
And, rotate centered by screw mandrel 11 in order to prevent nut contiguous block 6, offer a fixing hole on nut contiguous block 6, the steady pin 71 on slide block contiguous block 7 inserts in the fixing hole of nut contiguous block 6.
Operation principle of the present utility model is as follows:
Rotarily drive screw mandrel 11 rotation by motor 4, produce relative translation and be screwed between feed screw nut 10 on screw mandrel 11 and screw mandrel 11; Due to feed screw nut 10 with nut contiguous block 6 for rigidly fixing, so nut contiguous block 6 is followed feed screw nut 10 translations in the same way; Nut contiguous block 6 is connected with slide block contiguous block 7 by spring 9, because motive force is not enough to Compress Spring 9, thus slide block contiguous block 7 and push rod 1 and then translation in the same way, thus make push rod 1 drive syringe 2 motions.
Therefore, change the direction of rotation of motor 4 by control circuit board, can change the direction of rotation of screw mandrel 11, and then change push rod 1 direction of advance, convenient and swift during mounting of syringe 2.
In addition, only need to change the pulse frequency of drive stepping motor 4 by control circuit board, just can change the rotary speed of motor 4, and then change heparin injection speed in syringe 2, thereby realize fast injection heparin and slow injection heparin function.
Moreover, because rotarily driving feed screw nut 10, motor 4 advances, and feed screw nut 10 rigidly fixes with nut contiguous block 6, so nut contiguous block 6 follows feed screw nut 10 to advance, nut contiguous block 6 is connected with slide block contiguous block 7 by spring.At this moment, when if syringe 2 generation obstructions or empty liquid have occured, push rod 1 does not promote syringe 2, slide block contiguous block 7 is static, and nut contiguous block 6 Compress Springs 9 advance, the end of baffle plate 20 stretches among photoswitch 8, make control circuit board the photosignal of photoswitch 8 can't be detected, thereby the trigger alarm device sends alarm signal.
To sum up, compared with prior art, the utlity model has following beneficial effect:
1, the heparin pump that the utility model proposes uses step-by-step linear electric motor, by the mode of motor direct-drive feed screw nut, thereby simplify the structure of motor transmission system, reduced the complexity that reduces motor transmission system, and be easy to install, improved the reliability of heparin pump.
2, the heparin pump that the utility model proposes uses the step-by-step linear electric motor transmission to control, and the pulse signal frequency that only needs to change motor just can change motor rotation speed, just can realize the function of slow injection heparin or fast injection heparin.
3, the simple structure of using the heparin pump that the utility model proposes realizes stopping up and empty liquid is reported to the police, when if obstruction or empty liquid occur, push rod pushes away motionless syringe, push rod and slide block contiguous block are rigidly connected, the slide block contiguous block is also motionless, and motor is contained in the baffle plate on the nut contiguous block rotating drive nut contiguous block Compress Spring, trigger the photoswitch on the slide block contiguous block, thereby realize reporting to the police.
The above is only preferred embodiment of the present utility model; not in order to limit this utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (9)
1. a heparin pump, is characterized in that, comprising: shell; Be fixed on the frame in shell; Be arranged on motor and control circuit board thereof on the motor mounting plate of frame; One end directly is connected with the driving shaft of motor, the screw mandrel of another end and support set support and connection; Be screwed together feed screw nut on screw mandrel, and the feed screw nut is fixed on the nut contiguous block; Be fixed on the guide rail on the side plate of frame, and be arranged on the slide block contiguous block on guide rail; The nut contiguous block will have the spring-compressed of a preset pressure in the endoporus of slide block contiguous block by axial back-up ring, and an end of slide block contiguous block is fixedly connected with a push rod for the syringe that directly promotes to be used in conjunction with heparin pump.
2. heparin pump according to claim 1, is characterized in that, adopts the seam positioning connection structure between motor and motor mounting plate.
3. heparin pump according to claim 1, is characterized in that having the gap between the end of support set and leading screw, and be over-surplus fit structure between the rear plate of support set and frame.
4. heparin pump according to claim 1, is characterized in that, the end of leading screw is equipped with the coding disk for detection of rotary speed.
5. heparin pump according to claim 1, is characterized in that, offers a fixing hole on the nut contiguous block, and the steady pin of slide block contiguous block inserts in the fixing hole of nut contiguous block.
6. according to claim 1-5 any one described heparin pump, is characterized in that, is fixed with baffle plate on the nut contiguous block, is fixed with on the slide block contiguous block for the checkout gear that stops up or empty liquid detects.
7. heparin pump according to claim 6, is characterized in that, has detent on baffle plate, be provided with corresponding tongue on the nut contiguous block, and tongue is fixed among detent.
8. heparin pump according to claim 6, is characterized in that, the photoswitch that checkout gear is used in conjunction with for the end with baffle plate.
9. heparin pump according to claim 6, is characterized in that, also comprises: when being used for end at baffle plate and stretching among photoswitch, controlled circuit board is controlled the alarm device that sends alarm signal, and this alarm device connects control circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220616389 CN202961316U (en) | 2012-11-20 | 2012-11-20 | Heparin pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220616389 CN202961316U (en) | 2012-11-20 | 2012-11-20 | Heparin pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202961316U true CN202961316U (en) | 2013-06-05 |
Family
ID=48502455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220616389 Expired - Lifetime CN202961316U (en) | 2012-11-20 | 2012-11-20 | Heparin pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202961316U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103830785A (en) * | 2012-11-20 | 2014-06-04 | 广州市暨华医疗器械有限公司 | Heparin pump |
| CN114688224A (en) * | 2022-04-08 | 2022-07-01 | 成都理工大学 | Corrosion-resistant full-automatic injection pump system |
-
2012
- 2012-11-20 CN CN 201220616389 patent/CN202961316U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103830785A (en) * | 2012-11-20 | 2014-06-04 | 广州市暨华医疗器械有限公司 | Heparin pump |
| CN114688224A (en) * | 2022-04-08 | 2022-07-01 | 成都理工大学 | Corrosion-resistant full-automatic injection pump system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |