CN204033909U - The real-time automatic infusion device of central venous pressure feedback control - Google Patents
The real-time automatic infusion device of central venous pressure feedback control Download PDFInfo
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- CN204033909U CN204033909U CN201420463990.8U CN201420463990U CN204033909U CN 204033909 U CN204033909 U CN 204033909U CN 201420463990 U CN201420463990 U CN 201420463990U CN 204033909 U CN204033909 U CN 204033909U
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Abstract
A real-time automatic infusion device for central venous pressure feedback control, comprises CVP pipe, pressure transducer, controller and controlled infusion set; Described controlled infusion set comprises buncher, eccentric and tube for transfusion clamping device; Described tube for transfusion clamping device is positioned on the projected position of tube for transfusion; The rotor of output shaft axle of described buncher is connected with eccentric; Projected position and the eccentric rotary motion trace of tube for transfusion partially overlap; The tail end of described CVP pipe passes through the pressure input of pressure connection tube Bonding pressure transducer; The electrical signal of pressure transducer passes through the CVP pressure signal input end of analog-digital converter connection control device; The motor control signal outfan of controller connects the control signal input of buncher.Adopt this device, real-time and accurately for patient carries out the control needing the transfusion scale of construction in art, the workload of medical personnel can be alleviated.
Description
Technical field
This utility model belongs to technical field of medical instruments, specifically the real-time automatic infusion device of a kind of central venous pressure (CVP) feedback control.
Background technology
In surgery anesthesia process, the central venous pressure according to patient (CVP) is needed to adjust the amount of infusion (be control amount of infusion by infusion velocity) of infusion liquid in art (as crystalloid fluid, colloidal solution etc.).In tradition anaesthesia process, be adopt the methods such as ruler method to measure CVP, then manually adjust the amount of infusion of infusion liquid in art according to CVP numerical value.The concrete operation method of this measurement CVP is, first settle central venous catheter (i.e. CVP pipe) on a patient body, normal saline is connect with transfusion device, after discharge opeing, manage with CVP and be connected, then transfusion device and normal saline joint being extracted, allowing liquid automatic descending in infusion pipeline to only not reducing to, measure the height of fluid column with a yardstick.
This mode brings very large workload to medical personnel, meanwhile, can not ensure to measure the accuracy of CVP and the real-time of amount of infusion and accuracy.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the utility model proposes a kind of real-time automatic infusion device of central venous pressure feedback control, comprising CVP pipe, pressure transducer, controller and controlled infusion set; Described controlled infusion set comprises buncher, eccentric and tube for transfusion clamping device; Described tube for transfusion clamping device is positioned on the projected position of tube for transfusion; The rotor of output shaft axle of described buncher is connected with eccentric; Projected position and the eccentric rotary motion trace of tube for transfusion partially overlap;
The tail end of described CVP pipe passes through the pressure input of pressure connection tube Bonding pressure transducer; The electrical signal of pressure transducer passes through the CVP pressure signal input end of analog-digital converter connection control device; The motor control signal outfan of controller connects the control signal input of buncher.
Described tube for transfusion clamping device comprises support plate and two infusion tube clamp; It is recessed that described support plate is provided with arc, and two infusion tube clamp lay respectively at two recessed high points of arc; The described eccentric rotation rail radian recessed with arc is corresponding; Tube for transfusion be projected in arc recessed on, and between two infusion tube clamp.
The electrical signal of described pressure transducer is also connected with amplifier, the input end of analog signal of the outfan connection mode number converter of amplifier.
Analog-digital converter is CVP measuring cell; The electrical signal of pressure transducer connects the signal input part of CVP measuring cell, the data input pin of the data output end connection control device of CVP measuring cell.(adopt CVP measuring cell can realize the analog-digital conversion function of analog-digital converter, in addition, measuring cell also has the functions such as display, warning.)
Described controller is computer or single-chip microcomputer;
During controller employing computer, between computer and CVP measuring cell, carry out data transmission by serial line interface; Signal transmissions is carried out by serial line interface between the control signal input of computer and buncher.
During described controller employing single-chip microcomputer, also comprise power module and drive circuit; Described power module is single-chip microcomputer and drive circuitry; The signal input part of described single-chip microcomputer is the signal input part of controller.
This unit engineering realizes simple, adopts this automatic infusion device, real-time and accurately for patient carries out the control needing the transfusion scale of construction in art, can alleviate the workload of medical personnel.This device is mainly used in operation, and intensive care patient, is particularly useful for renal transplantation, cardiopulmonary bypass surgery etc.
Accompanying drawing explanation
Fig. 1 is principle schematic of the present utility model;
Fig. 2 is the principle schematic of tube for transfusion clamping device.
In figure, CVP pipe 1, pressure transducer 2, controller 3, controlled infusion set 4, buncher 5, eccentric 6, support plate 7, infusion tube clamp 8.
Detailed description of the invention
The technical program is further illustrated as follows below in conjunction with accompanying drawing and detailed description of the invention:
As Fig. 1, a kind of real-time automatic infusion device of central venous pressure feedback control, comprises CVP pipe, pressure transducer, controller and controlled infusion set; Described controlled infusion set comprises buncher, eccentric and tube for transfusion clamping device; Described tube for transfusion clamping device is positioned on the projected position of tube for transfusion; The rotor of output shaft axle of described buncher is connected with eccentric; Projected position and the eccentric rotary motion trace of tube for transfusion partially overlap; The tail end of described CVP pipe passes through the pressure input of pressure connection tube Bonding pressure transducer; The electrical signal of pressure transducer passes through the CVP pressure signal input end of analog-digital converter connection control device; The motor control signal outfan of controller connects the control signal input of buncher.
Described tube for transfusion clamping device comprises support plate and two infusion tube clamp; It is recessed that described support plate is provided with arc, and two infusion tube clamp lay respectively at two recessed high points of arc; The described eccentric rotation rail radian recessed with arc is corresponding; Tube for transfusion be projected in arc recessed on, and between two infusion tube clamp.
The electrical signal of described pressure transducer is also connected with amplifier, the input end of analog signal of the outfan connection mode number converter of amplifier.
Analog-digital converter is CVP measuring cell; The electrical signal of pressure transducer connects the signal input part of CVP measuring cell, the data input pin of the data output end connection control device of CVP measuring cell.
Described controller is computer or single-chip microcomputer;
During controller employing computer, between computer and CVP measuring cell, carry out data transmission by serial line interface; Signal transmissions is carried out by serial line interface between the control signal input of computer and buncher.
During described controller employing single-chip microcomputer, also comprise power module and drive circuit; Described power module is single-chip microcomputer and drive circuitry; The signal input part of described single-chip microcomputer is the signal input part of controller.
Such as: surgical patient, man, 45 years old, plans to implement " mitral valve replacement "
After CVP pipe punctures, be shown as 6mmHg,
By CVP absolute value setting (for initial CVP normal range, less, larger patient):
If CVP is at 5 ~ 9mmHg, transfusion speed 500ml/h; CVP >=9mmHg, transfusion speed 200ml/h;
CVP≤5mmHg, transfusion speed 1000ml/h.
After CVP pipe punctures, be shown as 4mmHg,
By the setting of CVP changing value, if CVP changing value is in ± 2mmHg, transfusion speed 1000ml/h; CVP changing value >=2mmHg, transfusion speed 500ml/h; CVP changing value≤-2mmHg, transfusion speed 2000ml/h.
The scope of application of this device: be mainly applicable to In surgery patient transfusion, particularly monitor the operation of CVP numerical value, as: renal transplantation, cardiopulmonary bypass surgery etc.; Also intensive care patient is applicable to, infusion treatment.
1, in art, patient posture is fixed, with the changing value of CVP (not being absolute value), and feedback guidance transfusion speed;
2, CVP is in art, has vein waveform, slightly change with breathing, and the fixed numbers of getting monitor display is foundation.
Claims (6)
1. a real-time automatic infusion device for central venous pressure feedback control, is characterized in that comprising CVP pipe, pressure transducer, controller and controlled infusion set; Described controlled infusion set comprises buncher, eccentric and tube for transfusion clamping device; Described tube for transfusion clamping device is positioned on the projected position of tube for transfusion; The rotor of output shaft axle of described buncher is connected with eccentric; Projected position and the eccentric rotary motion trace of tube for transfusion partially overlap;
The tail end of described CVP pipe passes through the pressure input of pressure connection tube Bonding pressure transducer; The electrical signal of pressure transducer passes through the CVP pressure signal input end of analog-digital converter connection control device; The motor control signal outfan of controller connects the control signal input of buncher.
2. the real-time automatic infusion device of central venous pressure feedback control according to claim 1, is characterized in that the electrical signal of described pressure transducer is also connected with amplifier, the input end of analog signal of the outfan connection mode number converter of amplifier.
3. the real-time automatic infusion device of central venous pressure feedback control according to claim 1, is characterized in that described tube for transfusion clamping device comprises support plate and two infusion tube clamp; It is recessed that described support plate is provided with arc, and two infusion tube clamp lay respectively at two recessed high points of arc; The described eccentric rotation rail radian recessed with arc is corresponding; Tube for transfusion be projected in arc recessed on, and between two infusion tube clamp.
4. the real-time automatic infusion device of central venous pressure feedback control according to claim 1, is characterized in that described analog-digital converter is CVP measuring cell; The electrical signal of pressure transducer connects the signal input part of CVP measuring cell, the data input pin of the data output end connection control device of CVP measuring cell.
5. the real-time automatic infusion device of central venous pressure feedback control according to claim 1, is characterized in that described controller is computer, carries out data transmission between computer and CVP measuring cell by serial line interface; Signal transmissions is carried out by serial line interface between the control signal input of computer and buncher.
6. the real-time automatic infusion device of central venous pressure feedback control according to claim 1, is characterized in that described controller is single-chip microcomputer, also comprises power module and drive circuit; Described power module is single-chip microcomputer and drive circuitry; The signal input part of described single-chip microcomputer is the signal input part of controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420463990.8U CN204033909U (en) | 2014-08-15 | 2014-08-15 | The real-time automatic infusion device of central venous pressure feedback control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420463990.8U CN204033909U (en) | 2014-08-15 | 2014-08-15 | The real-time automatic infusion device of central venous pressure feedback control |
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| Publication Number | Publication Date |
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| CN204033909U true CN204033909U (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420463990.8U Expired - Fee Related CN204033909U (en) | 2014-08-15 | 2014-08-15 | The real-time automatic infusion device of central venous pressure feedback control |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107050571A (en) * | 2017-06-06 | 2017-08-18 | 吉林师范大学 | A kind of constant temperature transfusion system monitoring system of adjusting dropping speed |
| CN109793964A (en) * | 2019-01-31 | 2019-05-24 | 广州友沃医疗用品有限公司 | A kind of high-pressure injection hose and its injection device and pressure feedback method of application |
-
2014
- 2014-08-15 CN CN201420463990.8U patent/CN204033909U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107050571A (en) * | 2017-06-06 | 2017-08-18 | 吉林师范大学 | A kind of constant temperature transfusion system monitoring system of adjusting dropping speed |
| CN109793964A (en) * | 2019-01-31 | 2019-05-24 | 广州友沃医疗用品有限公司 | A kind of high-pressure injection hose and its injection device and pressure feedback method of application |
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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 |
Granted publication date: 20141224 Termination date: 20150815 |
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| EXPY | Termination of patent right or utility model |