CN110025852A - A kind of counterflow-preventing analgesia pump - Google Patents
A kind of counterflow-preventing analgesia pump Download PDFInfo
- Publication number
- CN110025852A CN110025852A CN201910364157.5A CN201910364157A CN110025852A CN 110025852 A CN110025852 A CN 110025852A CN 201910364157 A CN201910364157 A CN 201910364157A CN 110025852 A CN110025852 A CN 110025852A
- Authority
- CN
- China
- Prior art keywords
- movable block
- piston
- unilateral bearing
- shaft
- counterflow
- 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.)
- Pending
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
- A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M2005/1401—Functional features
- A61M2005/1405—Patient controlled analgesia [PCA]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
- A61M2005/14506—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons mechanically driven, e.g. spring or clockwork
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The present invention relates to a kind of counterflow-preventing analgesia pump, including a body, liquid storage device and piston device are provided with by support base on body, are connected between liquid storage device and piston device by pipeline A, and has also been arranged in series check valve A on pipeline A；The outlet end of piston device is also provided with and communicated with pipeline B, has also been arranged in series check valve B on the pipeline B；The moving assembly of one piston handle for clamping liquid storage device, moving assembly include movable block and the clamp system for being mounted on movable block and being used for clamping piston handle, and the movable block is driven by the executing agency being mounted on body and drives piston handle mobile.The present invention has the advantages that check valve is arranged on the pipeline of piston device leading portion, after liquid being made to enter piston device, piston device can not be flowed out from this valve；A possibility that a possibility that designing check valve in the rear end of piston device, liquid can be made to flow out from piston device, piston device can not be flowed into from this valve, construct two-way countercurrent prevention system, eliminate unexpected discharge and blood back.
Description
Technical field
The present invention relates to a kind of Medical Devices, specifically a kind of counterflow-preventing analgesia pump.
Background technique
A kind of liquid infusion devices of analgesia pump can make drug keep a stable concentration in blood, can help to use
Less drug reaches better analgesia therapy.With national medical insurance pilot painless delivery, analgesia pump is more and more closed
Note, but the disposable analgesia pump clinically generally used there are precision problems such as low, safety do not ensure.
Through retrieving, 208574083 U of patent CN discloses a kind of novel electron analgesia pump, including analgesia pump ontology, setting
Analgesia pump pump head and perfusion tube in the analgesia pump ontology, the analgesia pump pump head include motor and along far from the motor
Direction is successively set on entrance cam, push cam, outlet cam on the output shaft of the motor, the entrance cam lower section
It is provided with entrance sliding block, push rod is provided with below the push cam, is provided with outlet sliding block below the outlet cam；The reality
With novel novel electron analgesia pump, analgesia pump pump head generates positive pressure and realizes the defeated of medical fluid in the way of purely mechanic transmission
Out, the backflow phenomenon of medical fluid can be prevented and guarantee the precision of single infusion；But there are still certain defects: unidirectional reflux,
A possibility that a possibility that may cause unexpected discharge and blood back.
Therefore, a kind of counterflow-preventing analgesia pump for a possibility that researching and developing a possibility that capable of eliminating unexpected discharge and blood back is
It is highly desirable.
Summary of the invention
The technical problem to be solved in the present invention is to provide one kind can eliminate unexpected discharge a possibility that and blood back can
The counterflow-preventing analgesia pump of energy property.
In order to solve the above technical problems, the technical solution of the present invention is as follows: a kind of counterflow-preventing analgesia pump, innovative point are:
Including
One body is provided with liquid storage device and piston device by support base on the body, passes through pipe between liquid storage device and piston device
Road A connection, and check valve A has also been arranged in series on pipeline A；The outlet end of the piston device is also provided with and communicated with pipeline B, described
Check valve B has also been arranged in series on pipeline B；
The moving assembly of one piston handle for clamping liquid storage device, the moving assembly include movable block and are mounted on movable block
The clamp system of clamping piston handle is gone up and is used for, the movable block is driven and by the executing agency being mounted on body with piston
Handle is mobile.
Further, it is also equipped with displacement sensor on the movable block, while is also equipped on body and is passed with displacement
The connected alarm of sensor.
Further, the clamp system includes the first movable plate, the second movable plate, shaft, the first unilateral bearing, second
Unilateral bearing, first movable plate, the second movable plate are separately positioned on the two sides of piston handle, and the shaft is rotatably arranged
On movable block, the inner ring of first unilateral bearing and the second unilateral bearing is covered in shaft and can be rotated with shaft, institute
The outer ring rotating for stating the first unilateral bearing and the second unilateral bearing is contrary, first unilateral bearing and the second unilateral bearing
Outer ring on external screw thread having the same rotation direction, first movable plate and the second movable plate respectively with the first unilateral bearing and
The outer ring of two unilateral bearings is threadedly engaged.
Further, the both ends of the shaft have flange, and the both ends of the movable block are equipped with the branch of bearing shaft rotation
Seat is held, there is the annular groove for accommodating the flange in shaft in the fulcrum bearing.
Further, the body is equipped with position-limit mechanism corresponding with movable block limit position, the position-limit mechanism packet
Slide, traveller and spring are included, the slide is fixed on the machine body, and the traveller is slidably disposed on slide, the spring
Elastic force is applied to traveller；During the movable block is moved to limit position, the movable block pushes traveller that spring is overcome to hinder
Power it is mobile and under traveller effect movement extremely limit.
Further, the executing agency is ball wire rod mechanism, and the movable block is mounted on the spiral shell of ball wire rod mechanism
On mother.
The present invention has the advantages that in the present invention, by by syringe use instead the liquid storage device being connected by pipeline and
Piston device, and it is provided with check valve on the pipeline connected therebetween and in piston device liquid outlet pipe, piston device leading portion
Check valve is set on pipeline, after liquid being made to enter piston device, piston device can not be flowed out from this valve；In the rear end of piston device
Check valve is designed, liquid can be made to flow out from piston device, piston device can not be flowed into from this valve, construct two-way countercurrent prevention system,
A possibility that a possibility that eliminating unexpected discharge and blood back.
By the limit sensors added on movable block, the moving position of piston handle can be detected, and pass through report
The cooperation of alert device, to be sounded an alarm in the case where piston handle occurs blocking etc. and can not be successfully promotion, remind medical staff into
Row processing, improves the safety of product.
Quickly the piston handle of syringe can be clamped by the first movable plate and the relative movement of the second movable plate, injection
Device is easy for installation on micro-injection pump, quick.
A shaft driving first and second may be implemented by the first and second opposite unilateral bearing of rotation direction in clamp system
Movable plate moves towards in succession, and clamp system structure is simple.
It is limited by position of the position-limit mechanism to syringe piston, prevents executing agency without operation and live to syringe
Plug damages.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the schematic diagram of counterflow-preventing analgesia pump of the invention.
Fig. 2 is the portion the C enlarged diagram of Fig. 1.
Fig. 3 is the portion the D enlarged diagram of Fig. 1.
Fig. 4 is the schematic diagram of limit base in the present invention.
Specific embodiment
The following examples can make professional and technical personnel that the present invention be more fully understood, but therefore not send out this
It is bright to be limited among the embodiment described range.
A kind of counterflow-preventing analgesia pump as shown in Figure 1, including
One body 1 is provided with liquid storage device 200 and piston device 300, liquid storage device 200 and piston device 300 by support base 8 on body 1
Between be connected to by pipeline 401A, and check valve 402A has also been arranged in series on pipeline 401A；The outlet end of piston device 300 also connects
It is logical to be provided with pipeline 403B, check valve 404B has also been arranged in series on the pipeline 403B.
The moving assembly of one piston handle 202 for clamping liquid storage device 200, moving assembly include movable block 2 and installation
Clamp system on movable block 2 and for clamping piston handle 202, movable block 2 are driven by the executing agency 3 being mounted on body 1
It moves and drives piston handle 202 mobile.Executing agency 3 is ball wire rod mechanism, and movable block 2 is mounted on the nut of ball wire rod mechanism
On.
Clamp system includes the first movable plate 4, the second movable plate 5, shaft, the first unilateral bearing, the second unilateral bearing, the
One movable plate 4 and the second movable plate 5 are respectively corresponded in the two sides of 200 piston handle 202 of syringe, when the first movable plate 4 and second
After movable plate 5 clamps 200 piston handle 202 of syringe, movable block 2 can drive piston handle 202 mobile.
Shaft 601 is spindle rotationally arranged on movable block 2, specifically, the both ends of shaft 601 have flange 201, movable block
2 both ends are equipped with the fulcrum bearing that bearing shaft 601 rotates, and have the annular for accommodating the flange 201 in shaft 601 in fulcrum bearing
Slot, the flange 201 in shaft 601 cannot be moved axially under the limitation of annular groove and can only be circumferentially rotated.
The equal interference of inner ring of first unilateral bearing 602 and the second unilateral bearing 603 covers in shaft 601 or by key peace
In shaft 601, i.e. the inner ring of the first unilateral bearing 602 and the second unilateral bearing 603 rotates together with shaft 601.First
The outer ring rotating of unilateral bearing 602 and the second unilateral bearing 603 is contrary, the first unilateral bearing 602 and the second unilateral bearing
External screw thread having the same rotation direction on 603 outer ring, the first movable plate 4 and the second movable plate 5 respectively with the first unilateral bearing 602
It is threadedly engaged with the outer ring of the second unilateral bearing 603.It should be noted that unilateral bearing is a kind of prior art, unilateral bearing
It is a kind of bearing that can be freely rotated, and lock in the other directions in one direction, herein no longer to its internal junction
Structure is described further.
First assume that the outer ring of the first unilateral bearing 602 when shaft 601 rotates clockwise can instantaneously rotate clockwise, second is single
To the static difference in the outer ring of bearing 603, then the outer ring of first unilateral bearing 602 is then when the rotation of the hour hands counterclockwise of shaft 601
Static, the outer ring of the second unilateral bearing 603 is static instantaneously to be rotated counterclockwise.When shaft 601 rotates clockwise, the first one-way shaft
Holding 602 outer ring can drive the first trap to move right, and turn after the piston handle 202 of the first movable plate 4 and syringe 200 contacts
Axis 601 rotates counterclockwise, at this point, the first movable plate 4 is static, the second movable plate 5 is moved to the left, when the second trap plate and syringe
After 200 piston handle 202 contacts, the first movable plate 4 and the second movable plate 5 clamp piston handle 202, and then movable block 2 is mobile,
First movable plate 4 and the second movable plate 5 can drive the piston of syringe 200 mobile to carry out injecting liquid drug.After the completion of injection,
The first and second movable plate can be rotated manually increases the distance between first and second movable plate.
It is also equipped with displacement sensor on movable block 2, while being also equipped on body 1 and being connected with displacement sensor
Alarm.By the limit sensors added on movable block 2, the moving position of piston handle 202 can be detected, and passed through
The cooperation of alarm reminds medical care people to sound an alarm in the case where piston handle 202 occurs blocking etc. and can not be successfully promotion
Member is handled, and the safety of product is improved.
Body 1 is equipped with position-limit mechanism 7 corresponding with 2 limit position of movable block, and position-limit mechanism 7 includes slide 701, traveller
702 and spring 703, slide 701 be fixed on body 1, traveller 702 is slidably disposed on slide 701,703 pairs of cunnings of spring
Column 702 applies elastic force；For movable block 2 during being moved to limit position, movable block 2 can push traveller 702 to overcome spring 703
Resistance it is mobile and under the effect of traveller 702 movement extremely limit, movable block 2 is limited by traveller 702, prevents its movement
Excessively syringe 200 is damaged
Position-limit mechanism 7 further includes being mounted on body 1 close to switch 704, close to switch 704 when movable block 2 is moved to limit position
When, it can sense traveller 702 close to switch 704 and send a signal to controller, controller receives the signal close to switch 704
After to can control executing agency 3 out of service.
Angle steel 705 on body 1 is provided with the through-hole for passing through close to switch 704 on angle steel 705, approaches the shell of switch 704
Upper two bung flanges 706 for having external screw thread and being threadedly engaged with external screw thread, two bung flanges 706 are located at the two sides of angle steel 705,
Two bung flanges 706 can will be fixed after contacting with angle steel 705 close to switch 704.
In the present invention, by using syringe instead be connected by pipeline liquid storage device 200 and piston device 300, and
Check valve is provided on the pipeline connected between the two and in 300 liquid outlet pipe of piston device, on the pipeline of 300 leading portion of piston device
Check valve is set, after liquid can be made to enter piston device 300, piston device 300 can not be flowed out from this valve；In the rear end of piston device
Check valve is designed, liquid can be made to flow out from piston device 300, piston device 300 can not be flowed into from this valve, construct two-way counterflow-preventing
A possibility that system, a possibility that eliminating unexpected discharge and blood back.
It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, above-described embodiment and explanation
It is merely illustrated the principles of the invention described in book, without departing from the spirit and scope of the present invention, the present invention also has
Various changes and modifications, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention
It is defined by the appending claims and its equivalent thereof.
Claims (6)
1. a kind of counterflow-preventing analgesia pump, it is characterised in that: including
One body is provided with liquid storage device and piston device by support base on the body, passes through pipe between liquid storage device and piston device
Road A connection, and check valve A has also been arranged in series on pipeline A；The outlet end of the piston device is also provided with and communicated with pipeline B, described
Check valve B has also been arranged in series on pipeline B；
The moving assembly of one piston handle for clamping liquid storage device, the moving assembly include movable block and are mounted on movable block
The clamp system of clamping piston handle is gone up and is used for, the movable block is driven and by the executing agency being mounted on body with piston
Handle is mobile.
2. counterflow-preventing analgesia pump according to claim 1, it is characterised in that: be also equipped with displacement sensing on the movable block
Device, while the alarm being connected with displacement sensor is also equipped on body.
3. counterflow-preventing analgesia pump according to claim 1, it is characterised in that: the clamp system include the first movable plate,
Second movable plate, shaft, the first unilateral bearing, the second unilateral bearing, first movable plate, the second movable plate are separately positioned on
The two sides of piston handle, the shaft are spindle rotationally arranged on movable block, first unilateral bearing and the second unilateral bearing
Inner ring is covered in shaft and can be rotated with shaft, the outer ring rotating direction phase of first unilateral bearing and the second unilateral bearing
Instead, external screw thread having the same rotation direction on the outer ring of first unilateral bearing and the second unilateral bearing, first movable plate
Outer ring with the second movable plate respectively with the first unilateral bearing and the second unilateral bearing is threadedly engaged.
4. counterflow-preventing analgesia pump according to claim 3, it is characterised in that: the both ends of the shaft have flange, described
The both ends of movable block are equipped with the fulcrum bearing of bearing shaft rotation, have the annular for accommodating the flange in shaft in the fulcrum bearing
Slot.
5. counterflow-preventing analgesia pump according to claim 1, it is characterised in that: the body is equipped with and movable block limit position
Corresponding position-limit mechanism, the position-limit mechanism include slide, traveller and spring, and the slide is fixed on the machine body, the cunning
Column is slidably disposed on slide, and the spring applies elastic force to traveller；The movable block is moved to the process of limit position
In, the movable block pushes traveller against the force of the spring mobile and movement extremely limits under traveller effect.
6. counterflow-preventing analgesia pump according to claim 1, it is characterised in that: the executing agency is ball wire rod mechanism,
The movable block is mounted on the nut of ball wire rod mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910364157.5A CN110025852A (en) | 2019-04-30 | 2019-04-30 | A kind of counterflow-preventing analgesia pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910364157.5A CN110025852A (en) | 2019-04-30 | 2019-04-30 | A kind of counterflow-preventing analgesia pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110025852A true CN110025852A (en) | 2019-07-19 |
Family
ID=67241086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910364157.5A Pending CN110025852A (en) | 2019-04-30 | 2019-04-30 | A kind of counterflow-preventing analgesia pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110025852A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5037399A (en) * | 1989-07-07 | 1991-08-06 | Reichert Elmer L | Apparatus for the administration of medications to animals |
| CN2314798Y (en) * | 1997-10-08 | 1999-04-21 | 王锦淇 | Disposable patient self control analgesic syringe |
| CN203441696U (en) * | 2013-09-13 | 2014-02-19 | 四川优普超纯科技有限公司 | Trace additive control system |
| CN206045103U (en) * | 2016-07-22 | 2017-03-29 | 东华理工大学 | Two-way continuous syringe pump |
| CN109195651A (en) * | 2016-03-29 | 2019-01-11 | 医疗流量***有限公司 | Pulse infusion device systems and method |
| CN208405572U (en) * | 2017-08-08 | 2019-01-22 | 重庆市中医院 | Micro-injection pump |
| CN210056987U (en) * | 2019-04-30 | 2020-02-14 | 江苏三和生物工程股份有限公司 | Anti-reflux analgesia pump |
-
2019
- 2019-04-30 CN CN201910364157.5A patent/CN110025852A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5037399A (en) * | 1989-07-07 | 1991-08-06 | Reichert Elmer L | Apparatus for the administration of medications to animals |
| CN2314798Y (en) * | 1997-10-08 | 1999-04-21 | 王锦淇 | Disposable patient self control analgesic syringe |
| CN203441696U (en) * | 2013-09-13 | 2014-02-19 | 四川优普超纯科技有限公司 | Trace additive control system |
| CN109195651A (en) * | 2016-03-29 | 2019-01-11 | 医疗流量***有限公司 | Pulse infusion device systems and method |
| CN206045103U (en) * | 2016-07-22 | 2017-03-29 | 东华理工大学 | Two-way continuous syringe pump |
| CN208405572U (en) * | 2017-08-08 | 2019-01-22 | 重庆市中医院 | Micro-injection pump |
| CN210056987U (en) * | 2019-04-30 | 2020-02-14 | 江苏三和生物工程股份有限公司 | Anti-reflux analgesia pump |
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