CN201510605U - Propulsion mechanism for medical injection pumps - Google Patents
Propulsion mechanism for medical injection pumps Download PDFInfo
- Publication number
- CN201510605U CN201510605U CN200920210993XU CN200920210993U CN201510605U CN 201510605 U CN201510605 U CN 201510605U CN 200920210993X U CN200920210993X U CN 200920210993XU CN 200920210993 U CN200920210993 U CN 200920210993U CN 201510605 U CN201510605 U CN 201510605U
- Authority
- CN
- China
- Prior art keywords
- guide groove
- connecting rod
- clasp nut
- injection
- frame
- 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 - Fee Related
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Abstract
A propulsion mechanism for a medical injection pumps is characterized in that a screw rod is arranged between a left semi-circular split nut and a right semi-circular split nut; the left semi-circular split nut and the right semi-circular split nut are arranged on the opposite surfaces in an injection machine rack; a connecting rod is connected with the injection machine rack through a connecting rod shaft; the end of the connecting rod arranged on the connecting rod shaft is provided with a protrusion A and a protrusion B; a connecting rod limit pin is arranged at the other end of the connecting rod; an end part of the limit pin is arranged in a sliding guide groove; and the position of the end of the limit pin changes with the vertical movement of a guide groove rack. The utility model has the advantages that when an injection syringe is placed or replaced, a hand-pressed seat and a snap fastener are opened, the left and the right semi-circular split nuts are separated, and all the actions are simultaneously finished in a linked manner only by pulling up the guide groove rack in one step, so that the operation of the propulsion mechanism is flexible and convenient; and when in work, the pressed guide groove rack is released, a pressing handle of the injection syringe is tightly fixed by the hand-pressed seat and the snap fastener due to the retractive force of a coil spring, the left and the right semi-circular split nuts clasp the screw rod and are locked through a limit piece and a torsion spring, so that the phenomenon of slippage due to the tremble of the screw rod is avoided, the working stability of the injection pump is high, and less error is caused.
Description
Technical field
The invention belongs to the medical injection pump technical field, relate to a kind of architecture advances of medical injection pump propulsive mechanism, make the transfusion can be more accurate safer.
Background technology
The infusion pump applications wide range not only is used for medical purpose, also is widely used in laboratory and industrial circles such as biology, molecular physics, molecular chemistry, electrochemistry, biochip.Various syringe pumps are realized liquid transfer by the machinery pushing syringe.Yet, the normal injection pump only relies on the fixedly overcoat of syringe of clamp mechanism, the propulsive mechanism of syringe pump not fixedly syringe press hands, or propulsive mechanism only is to hold fixedly syringe by hand portion by little groove, in the process that advances transfusion, starting stage of transfusion usually can owing to syringe by hand portion and groove in a certain side be not close to fully and cause error; And if injection speed is than very fast in the injection process, screw mandrel can produce the phenomenon of jumping tooth.The unstability of progradation not only can cause very big injection error, and has the injection hidden danger.
The utility model content
The purpose of this utility model is: provide a kind of syringe by hands be fixed well, screw mandrel do not jump tooth, smoothness height, the medical injection pump propulsive mechanism that error is little.
For achieving the above object, the technical scheme that adopts is: a kind of propulsive mechanism of medical injection pump, comprise motor, and the screw mandrel that is connected with described motor by gear, it is characterized in that described screw mandrel top is equipped with injection frame and the guide groove frame that is connected with described injection frame, pressing the hands seat fixedlys connected with described guide groove frame one side, pressing the hands button links to each other with the guide groove top of the trellis, described putting by the hands button bit put relative with described by the hands seat, and can slide up and down with described guide groove top of the trellis, described guide groove top of the trellis inboard is equipped with wind spring, the end of wind spring by screw with fixedly connected by the hands seat; The intraperitoneal of described injection frame is equipped with the left clasp nut and the right clasp nut of opposite face semicircular in shape, fixedly connected with the injection frame by the nut rotating shaft, be equipped with screw mandrel between described left clasp nut and the right clasp nut, described left clasp nut and top, right clasp nut end join with the banking stop recess, described banking stop upper end is equipped with stage clip, connecting rod is connected with described injection frame by pitman shaft, the connecting rod of connecting rod axle head is equipped with protruding A and protruding B, the other end is equipped with the connecting rod spacer pin, the end of described spacer pin places in the sliding guide groove, and move up and down corresponding change position with described guide groove frame, described connecting rod can rotate around the axle center of described pitman shaft, described protruding A and position, the intermediary hole of described banking stop join, and the inboard of described protruding B end and described left clasp nut and right clasp nut joins.
Described left clasp nut is connected by extension spring each other with right clasp nut.
Good effect of the present invention is: because special structure design such as connecting rods, when syringe is laid and is changed, as long as upwards pull up guide groove frame single stepping, by the hands seat with open by the hands button, the interlock of left clasp nut and right clasp nut separating action finishes simultaneously, flexible and convenient operation is laid and changed to syringe; Unclamp during work and press down the guide groove frame, since the retraction force of wind spring make guide groove frame one side by the hands seat and the hands of pressing by the close fixedly syringe of hands fastening, left side clasp nut, left clasp nut obvolvent screw mandrel, and by banking stop, extension spring locking, avoided the screw mandrel shake to produce the phenomenon of jumping tooth, syringe pump stable working degree height, error are little.
Description of drawings
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is this utility model structural representation;
Fig. 2 is that the A of Fig. 1 is to structural representation (band syringe);
Fig. 3 is Fig. 2 broken section structural representation;
Fig. 4 is the local structure for amplifying sketch map of Fig. 3 E portion;
Fig. 5 is that the B-B of Fig. 4 is backed down view to clasp nut by connecting rod projection B;
Fig. 6 is that the C of Fig. 3 is to structural representation (broken section).
Among the figure, 1. press the hands seat; 2. press the hands button; 3. guide groove frame; 4. sliding guide groove; 5. screw mandrel; 6. motor; 7. gear; 8. lead; 9. syringe is pressed hands; 10. wind spring; 11. screw; 12. left clasp nut; 13. right clasp nut; 14. rotating shaft; 15. banking stop; 16. stage clip; 17. connecting rod; 18. protruding A; 19. protruding B; 20. spacer pin; 21. extension spring; 22,23. nut rotating shafts; 24 injection frames.
The specific embodiment
A kind of propulsive mechanism of medical injection pump, comprise motor 6, and the screw mandrel 5 that is connected with described motor 6 by gear 7, it is characterized in that described screw mandrel 5 tops are equipped with injection frame 24 and the guide groove frame 3 that is connected with injection frame 24, pressing hands seat 1 fixedlys connected with guide groove frame 3 one sides, press hands button 2 link to each other with guide groove frame 3 tops (Fig. 1,2), described by hands button 2 positions with to press hands seat 1 position relative, and can slide up and down with guide groove frame 3 tops, guide groove frame 3 inside top are equipped with wind spring 10, the end of wind spring 10 by screw 11 with fixedly connected (Fig. 3) by hands seat 1; The intraperitoneal of described injection frame 24 is equipped with the left clasp nut 12 and the right clasp nut 13 of opposite face semicircular in shape, by nut rotating shaft 22,23 with the injection frame 24 fixedly connected, be equipped with screw mandrel 5 (Fig. 4) between left side clasp nut 12 and the right clasp nut 13, left side clasp nut 12 and right clasp nut 13 upper end and banking stop 15 recesses join (Fig. 6), banking stop 15 upper ends are equipped with stage clip 16, connecting rod 17 is connected with injection frame 24 by pitman shaft 14, the connecting rod 17 of pitman shaft 14 ends is equipped with protruding A 18 and protruding B 19, the other end is equipped with connecting rod spacer pin 20, the end of described spacer pin 20 places in the sliding guide groove 4, and move up and down corresponding change position with described guide groove frame 3, described connecting rod 17 can rotate around the axle center of described pitman shaft 14, described protruding A 18 joins with position, described banking stop 15 intermediary hole, the inboard of described protruding B 19 ends and left clasp nut 12 and right clasp nut 13 joins, and described left clasp nut 12 is connected (Fig. 5) by extension spring 21 each other with right clasp nut 13.
Lay or when changing injector operations, as long as guide groove frame 3 among Fig. 2 is upwards pulled up single stepping, by hands seat 1 with open by hands button 2, conveniently lay or change syringe.Simultaneously because connecting rod spacer pin 20 slides sliding guide groove shown in Figure 24 in, thus among Fig. 4 connecting rod 17 when counter clockwise direction is mobile, protruding A 18 makes progress, protruding B19 to the right.Because described protruding A 18 joins with position, described banking stop 15 intermediary hole, so protruding A 18 upwards drives banking stop 15 and upwards slides, make left clasp nut 12, right clasp nut 13 leave the recess position of banking stop 15 lower ends, be in released state, can promote propulsive mechanism and slide along lead 8 front and back this moment; After syringe places, after unclamping hands, guide groove frame 3 resets under the effect of wind spring 10, make by hands seat 1 with by 2 fastenings of hands button fixedly syringe press hands 9 (see figure 2)s, when connecting rod 17 clockwise directions move simultaneously, A 18 is downward for projection, projection B19 left, projection B 19 breaks away from left clasp nut 12 and right clasp nut 13, because the retraction pulling force of extension spring 21, make left clasp nut 12, right clasp nut 13 closures are obvolvent screw mandrel 5 again, banking stop 15 upper end stage clips 16 press banking stop 15 downward, make described left clasp nut 12 and right clasp nut 13 ends top enter the recess of banking stop 15 lower ends again, lock left clasp nut 12 and right clasp nut 13 (Fig. 6), guaranteeing does not have slippage phenomenon, and transfusion safety precisely steadily.
Claims (2)
1. the propulsive mechanism of a medical injection pump, comprise motor (6), and the screw mandrel (5) that is connected with described motor (6) by gear (7), it is characterized in that described screw mandrel (5) top is equipped with injection frame (24) and the guide groove frame (3) that is connected with described injection frame (24), pressing hands seat (1) fixedlys connected with described guide groove frame (3) one sides, pressing hands button (2) links to each other with guide groove frame (3) top, described relative with described hands seat (1) position of pressing by hands button (2) position, and can slide up and down with described guide groove frame (3) top, described guide groove frame (3) inside top is equipped with wind spring (10), the end of wind spring (10) by screw (11) with fixedly connected by hands seat (1); The intraperitoneal of described injection frame (24) is equipped with the left clasp nut (12) and the right clasp nut (13) of opposite face semicircular in shape, by nut rotating shaft (22,23) fixedly connected with injection frame (24), be equipped with screw mandrel (5) between described left clasp nut (12) and the right clasp nut (13), described left clasp nut (12) and right clasp nut (13) upper end and banking stop (15) recess join, described banking stop (15) upper end is equipped with stage clip (16), connecting rod (17) is connected with described injection frame (24) by pitman shaft (14), the connecting rod (17) of pitman shaft (14) end is equipped with protruding A (18) and protruding B (19), the other end is equipped with connecting rod spacer pin (20), the end of described spacer pin (20) places in the sliding guide groove (4), and move up and down corresponding change position with described guide groove frame (3), described connecting rod (17) can rotate around the axle center of described pitman shaft (14), described protruding A (18) joins with position, the intermediary hole of described banking stop (15), and the inboard of described protruding B (19) end and described left clasp nut (12) and right clasp nut (13) joins.
2. according to the propulsive mechanism of the described a kind of medical injection pump of claim 1, it is characterized in that described left clasp nut (12) is connected by extension spring (21) each other with right clasp nut (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920210993XU CN201510605U (en) | 2009-10-20 | 2009-10-20 | Propulsion mechanism for medical injection pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920210993XU CN201510605U (en) | 2009-10-20 | 2009-10-20 | Propulsion mechanism for medical injection pumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201510605U true CN201510605U (en) | 2010-06-23 |
Family
ID=42482000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920210993XU Expired - Fee Related CN201510605U (en) | 2009-10-20 | 2009-10-20 | Propulsion mechanism for medical injection pumps |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201510605U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106421978A (en) * | 2012-12-21 | 2017-02-22 | 德卡产品有限公司 | Syringe pump system |
-
2009
- 2009-10-20 CN CN200920210993XU patent/CN201510605U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106421978A (en) * | 2012-12-21 | 2017-02-22 | 德卡产品有限公司 | Syringe pump system |
| CN106421978B (en) * | 2012-12-21 | 2020-03-24 | 德卡产品有限公司 | Syringe pump system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100623 Termination date: 20131020 |