CN211383200U - Constant pressure syringe - Google Patents
Constant pressure syringe Download PDFInfo
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- CN211383200U CN211383200U CN201921651750.XU CN201921651750U CN211383200U CN 211383200 U CN211383200 U CN 211383200U CN 201921651750 U CN201921651750 U CN 201921651750U CN 211383200 U CN211383200 U CN 211383200U
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- chain wheel
- driving
- injection
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- box body
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Abstract
The utility model discloses a constant pressure injector, which comprises an injection tube and a propulsion device; the propelling device comprises a box body, a motor, a chute, a chain wheel transmission mechanism, a sliding plate and a translation plate; the motor is arranged on the outer wall of the box body; the chain wheel transmission mechanism comprises a chain, a driving chain wheel and a driven chain wheel; the driving chain wheel and the driven chain wheel are rotatably arranged on the inner wall of the box body; the driving chain wheel is in transmission connection with the motor through a driving shaft and is in transmission connection with the driven chain wheel through a chain; the chain is provided with a moving block; the sliding groove is fixed on the inner wall of the box body; the sliding plate is arranged in the sliding chute; the translation plate is arranged on the front end surface of the sliding chute; the upper end and the lower end of the translation plate are respectively provided with a driving block and a limiting block; the limiting plates are respectively arranged on the inner wall of the box body, below the driving chain wheel or above the driven chain wheel; the injection tube is arranged at one side of the box body; the injection tube comprises an injection push rod; the sliding plate is connected with the injection push rod through a connecting sleeve. The utility model discloses can be automatic, steady injection.
Description
Technical Field
The utility model relates to the technical field of syringes, in particular to a constant-pressure syringe.
Background
The surgical injector is used for injecting a small amount of liquid into an area which cannot be accessed by other methods or extracting the liquid from the area, a moving piston in the traditional surgical injector cannot keep thrust (namely pressure borne by a push rod) stable and unchanged in the propelling process, namely the traditional surgical injector performs 'smooth' upward propelling, the constant pressure and flow stabilization effect in the injecting process is difficult to achieve, liquid medicine is not safe and reliable enough, the liquid medicine is poor in injecting effect, manual propelling wastes time and labor, and the traditional surgical injector needs to be improved. Therefore, the constant-pressure injector capable of automatically and smoothly injecting is provided.
SUMMERY OF THE UTILITY MODEL
In view of the technical problem that exists among the background art, the utility model provides a constant pressure syringe that can automatic, steady injection.
In order to achieve the above object, the utility model provides a following technical scheme:
a constant pressure injector comprises an injection cylinder and a propelling device; the propelling device comprises a box body, a motor, a chute, a chain wheel transmission mechanism, a sliding plate, a translation plate, a driving mechanism, a limiting plate and a driving shaft; the motor is arranged on the outer wall of the box body; the chain wheel transmission mechanism comprises a chain, a driving chain wheel and a driven chain wheel; the driving chain wheel and the driven chain wheel are rotatably arranged on the inner wall of one side of the box body; the driving chain wheel is in transmission connection with the motor through the driving shaft, and the driving chain wheel is in transmission connection with the driven chain wheel through a chain; a moving block is arranged on the chain; a V-shaped notch is formed in the upper end face of the moving block; the sliding groove is fixed on the inner wall of the box body, and the opening of the sliding groove faces the chain wheel transmission mechanism; the sliding plate is arranged in the sliding groove in a manner of moving left and right, and one end of the sliding plate extends out of the box body; the translation plate is vertically arranged on the front end surface of the sliding plate; the upper end and the lower end of the translation plate are respectively provided with a driving mechanism which is symmetrical along the chain wheel transmission mechanism; the driving mechanism comprises a driving block and a limiting block; the driving block and the limiting block are respectively and rotatably arranged on the front end surface and the rear end surface of the translation plate and are fixedly connected through a rotating shaft; the end surface of the driving block close to the chain is provided with a pointed bulge matched with the V-shaped notch of the moving block; the driving block comprises an upper driving block and a lower driving block; the limiting blocks comprise an upper limiting block and a lower limiting block; the two limit plates comprise a lower limit plate and an upper limit plate which are respectively and vertically arranged on the inner wall of the box body, below the driving chain wheel or above the driven chain wheel; the end face, close to the limiting plate, of the limiting block is an inclined plane; the injection tube is arranged at one side of the box body; the injection tube comprises an injection push rod; the extending end of the sliding plate is provided with a connecting sleeve; the connecting sleeve is abutted against the injection push rod.
The injector also comprises a movable piston and an injection needle head; the top end of the injection tube is provided with the injection needle head; a movable piston matched with the cylinder cavity is arranged in the cylinder cavity of the injection cylinder; one end of the injection push rod is fixedly arranged at the center of the bottom surface of the movable piston, and the other end of the injection push rod extends out of the injection cylinder.
The syringe further comprises a fixing device; the fixing device comprises a fixing clamp and a supporting block; the supporting block is arranged at a position close to the opening of the box body; the injection tube is fixed on the supporting block through a fixing clamp; the fixation clamp is transparent in color.
The bottom of the injection push rod is provided with a pressure sensor; the connecting sleeve is arranged on the supporting block and between the injection tube and the box body; one end of the connecting sleeve is sleeved at the bottom of the injection push rod, and the end face of the connecting sleeve is provided with a groove matched with the pressure sensor; the sensing surface of the pressure sensor is abutted against the end surface of the groove; the other end of the connecting sleeve is sleeved on the extending end of the sliding plate; the injection push rod and the sliding plate are both arranged on the central axis of the connecting sleeve.
The box body is transparent in color.
And a circle of positioning line is arranged on the outer wall of the injection cylinder.
The translation plate and the sliding plate are integrally formed.
The utility model has the advantages that:
1. the utility model drives the upper driving block, i.e. the translation plate, to move leftwards through the chain wheel transmission mechanism, drives the sliding plate to move leftwards in the chute, and then pushes the injection push rod to move towards the direction of the injection needle through the connecting sleeve, so as to carry out injection, the injection process is stably propelled, the pressure is kept unchanged, and automatic and stable injection is realized;
2. when the inclined plane on the upper limiting block contacts the upper limiting plate, the upper limiting block drives the upper driving block to rotate anticlockwise through the rotating shaft, so that the moving block is separated from the upper driving block and continues to follow the chain transmission, the upper driving block stops moving, namely the sliding plate is driven to stop moving, the moving piston also moves to a limit position close to the injection needle, and the injection is finished; when the moving block moves to the position above the driving block below the translation plate, the moving block drives the lower driving block to move rightwards, when an inclined plane on the lower limiting block contacts a lower limiting plate, the lower limiting block drives the driving block to rotate anticlockwise, so that the moving block is separated from the lower driving block and continues to follow the chain for transmission, the lower driving block stops moving, namely the sliding plate is driven to stop moving, and when the moving block follows the chain and is located below the upper driving block again, the whole process realizes automatic reciprocation;
3. the injection push rod and the sliding plate are sleeved on the connecting sleeve and are arranged on the central axis of the connecting sleeve, so that the whole propelling process is favorably and stably carried out, and the bottom of the injection push rod is provided with the pressure sensor, so that the stress condition of the injection push rod is conveniently monitored;
4. the fixing clamp and the box body are transparent in color, so that a user can observe the condition in the injection tube and the transmission process in the propelling device conveniently;
5. the injection cylinder outer wall is equipped with the round location line, conveniently fixes a position when fixed injection cylinder.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 1;
FIG. 4 is a schematic view of the internal structure of the connecting sleeve and the injection push rod sleeve in FIG. 1;
in the figure, 1-supporting block, 2-needle, 3-injection cylinder, 4-moving piston, 5-fixing clamp, 6-injection push rod, 7-connecting sleeve, 701-groove, 8-limiting plate, 9-limiting block, 901-upper limiting block, 902-lower limiting block, 10-rotating shaft, 11-driving block, 1101-upper driving block, 1102-lower driving block, 12-moving block, 13-sliding chute, 14-chain, 15-driving shaft, 16-driving sprocket, 17-sliding plate, 18-driven sprocket, 19-box, 20-translation plate, 21-motor, 22-pressure sensor.
Detailed Description
Referring to fig. 1 to 4, a constant pressure syringe comprises a syringe barrel 3, a propelling device; the propulsion device comprises a box body 19, a motor 21, a chute 13, a chain wheel transmission mechanism, a sliding plate 17, a translation plate 20, a driving mechanism, a limiting plate 8 and a driving shaft 15; the motor 21 is arranged on the outer wall of the box body 19; the chain wheel transmission mechanism comprises a chain 14, a driving chain wheel 16 and a driven chain wheel 18; the driving chain wheel 16 and the driven chain wheel 18 are both rotatably arranged on the inner wall of one side of the box body 19; the driving chain wheel 16 is in transmission connection with a motor 21 through a driving shaft 15, and the driving chain wheel 16 is in transmission connection with a driven chain wheel 18 through a chain 14; a moving block 12 is arranged on the chain 14; a V-shaped notch is formed in the upper end face of the moving block 12; the chute 13 is fixed on the inner wall of the box body 19, and the opening of the chute faces the chain wheel transmission mechanism; the sliding plate 17 is arranged in the sliding groove 13 in a manner of moving left and right, and one end of the sliding plate extends out of the box body 19; the translation plate 20 is vertically arranged on the front end surface of the sliding plate 17; the upper end and the lower end of the translation plate 20 are respectively provided with a driving mechanism; the driving mechanism comprises a driving block 11 and a limiting block 9; the driving block 11 and the limiting block 9 are respectively and rotatably arranged on the front end surface and the rear end surface of the translation plate 20 and are fixedly connected through a rotating shaft 10; the end surface of the driving block 11 close to the chain 14 is provided with a pointed bulge matched with the V-shaped notch of the moving block 12; the driving block 11 includes an upper driving block 1101 and a lower driving block 1102; the stopper 9 includes an upper stopper 901 and a lower stopper 902; the two limit plates 8 comprise a lower limit plate 802 and an upper limit plate 801 which are respectively vertically arranged on the inner wall of the box body 19, below the driving chain wheel 16 or above the driven chain wheel 18; the end face of the limiting block 9 close to the limiting plate 8 is an inclined plane; the injection tube 3 is arranged at one side of the box body 19; the injection tube 3 comprises an injection push rod 6; the extending end of the sliding plate 17 is provided with a connecting sleeve 7; the connecting sleeve 7 is abutted against the injection push rod 6.
The injector also comprises a movable piston 4 and an injection needle 2; the top end of the injection tube 3 is provided with an injection needle 2; a movable piston 4 matched with the cylinder cavity is arranged in the cylinder cavity of the injection cylinder 3; one end of the injection push rod 6 is fixedly arranged at the central position of the bottom surface of the movable piston 4, and the other end extends out of the injection tube 3.
The injector further comprises a fixing device; the fixing device comprises a fixing clamp 5 and a supporting block 1; the supporting block 1 is arranged at a position close to the opening of the box body 19; the injection tube 3 is fixed on the supporting block 1 through a fixing clamp 5; the color of the fixing clamp 5 is transparent, and the condition that a user observes the inside of the injection cylinder is not influenced.
The bottom of the injection push rod 6 is provided with a pressure sensor 22; the connecting sleeve 7 is arranged on the supporting block 1 and between the injection tube 3 and the box body 19; one end of the connecting sleeve 7 is sleeved at the bottom of the injection push rod 6, and the end surface is provided with a groove matched with the pressure sensor 22; the sensing surface of the pressure sensor 22 is abutted against the end surface of the groove; the other end is sleeved on the extending end of the sliding plate 17; the injection push rod 6 and the sliding plate 17 are arranged on the central axis of the connecting sleeve 7, so that the whole propelling process can be smoothly carried out, and the pressure borne by the injection push rod 6 can be monitored in the propelling process.
The box 19 is transparent in color, which facilitates the user to see the propulsion process.
3 outer walls of injection tube are equipped with the round location line, and the convenience is fixed a position when fixed injection tube.
The translating plate 20 and the sliding plate 17 are integrally formed.
As shown in fig. 1-4, the working principle and flow of the present invention are as follows:
when liquid needs to be injected, the injection tube 3 which has sucked the liquid is clamped by the fixing clamp 5 at a designated position according to a circle of positioning line of the outer wall, and the injection push rod 6 is sleeved in the connecting sleeve 7; the motor 21 is started, the driving sprocket 16 rotates, the driven sprocket 18 rotates along with the driving sprocket through the transmission of the chain 14, in an initial state, the pointed protrusion of the upper driving block 1101 is located in the V-shaped groove of the moving block 12, the chain 14 transmits, the moving block 12 on the chain 14 drives the driving block 1101, namely, the translation plate 20 moves leftwards, the sliding plate 17 is driven to move leftwards in the sliding groove 13, at the moment, the sliding plate 17 pushes the injection push rod 6 to move towards the injection needle 2 through the connecting sleeve 7, injection is carried out, the pushing is carried out stably, and the pressure borne by the push rod is kept unchanged; when the inclined surface on the upper limiting block 901 contacts the upper limiting plate 801, the upper limiting block 901 drives the driving block 1101 to rotate anticlockwise through the rotating shaft 10, so that the moving block 12 is separated from the upper driving block 1101 and continuously follows the chain 14 for transmission, at this time, the upper driving block 1101 stops moving, namely, the sliding plate 17 is driven to stop moving, at this time, the moving piston 4 also moves to the limit position close to the injection needle 2, and the injection is completed; when the moving block 12 moves to the upper side of the driving block 1102 below the translation plate 20 along with the chain 14, the V-shaped groove of the moving block 12 contacts the pointed protrusion on the upper end surface of the driving block 1102 below, the moving block 12 drives the driving block 1102 below to move rightwards, the translation plate 20 drives the sliding plate 17 to move rightwards, when the inclined surface on the lower limiting block 902 contacts the limiting plate 802 below, the lower limiting block 902 drives the driving block 1102 to rotate anticlockwise through the rotating shaft 10, so that the moving block 12 is separated from the driving block 1102 and continues to follow the chain 14 for transmission, at this time, the driving block 1102 below stops moving, namely, the sliding plate 17 is driven to stop moving, and when the moving block 12 follows the chain 14 and is located below the driving block 1101 above again, the.
Claims (7)
1. A constant pressure syringe characterized by: the injector comprises an injection cylinder and a propelling device; the propelling device comprises a box body, a motor, a chute, a chain wheel transmission mechanism, a sliding plate, a translation plate, a driving mechanism, a limiting plate and a driving shaft; the motor is arranged on the outer wall of the box body; the chain wheel transmission mechanism comprises a chain, a driving chain wheel and a driven chain wheel; the driving chain wheel and the driven chain wheel are rotatably arranged on the inner wall of one side of the box body; the driving chain wheel is in transmission connection with the motor through the driving shaft, and the driving chain wheel is in transmission connection with the driven chain wheel through a chain; a moving block is arranged on the chain; a V-shaped notch is formed in the upper end face of the moving block; the sliding groove is fixed on the inner wall of the box body, and the opening of the sliding groove faces the chain wheel transmission mechanism; the sliding plate is arranged in the sliding groove in a manner of moving left and right, and one end of the sliding plate extends out of the box body; the translation plate is vertically arranged on the front end surface of the sliding plate; the upper end and the lower end of the translation plate are respectively provided with a driving mechanism which is symmetrical along the chain wheel transmission mechanism; the driving mechanism comprises a driving block and a limiting block; the driving block and the limiting block are respectively and rotatably arranged on the front end surface and the rear end surface of the translation plate and are fixedly connected through a rotating shaft; the end surface of the driving block close to the chain is provided with a pointed bulge matched with the V-shaped notch of the moving block; the driving block comprises an upper driving block and a lower driving block; the limiting blocks comprise an upper limiting block and a lower limiting block; the two limit plates comprise a lower limit plate and an upper limit plate which are respectively and vertically arranged on the inner wall of the box body, below the driving chain wheel or above the driven chain wheel; the end face, close to the limiting plate, of the limiting block is an inclined plane; the injection tube is arranged at one side of the box body; the injection tube comprises an injection push rod; the extending end of the sliding plate is provided with a connecting sleeve; the connecting sleeve is abutted against the injection push rod.
2. The syringe of claim 1, wherein: the injector also comprises a movable piston and an injection needle head; the top end of the injection tube is provided with the injection needle head; a movable piston matched with the cylinder cavity is arranged in the cylinder cavity of the injection cylinder; one end of the injection push rod is fixedly arranged at the center of the bottom surface of the movable piston, and the other end of the injection push rod extends out of the injection cylinder.
3. The syringe of claim 2, wherein: the syringe further comprises a fixing device; the fixing device comprises a fixing clamp and a supporting block; the supporting block is arranged at a position close to the opening of the box body; the injection tube is fixed on the supporting block through a fixing clamp; the fixation clamp is transparent in color.
4. The syringe of claim 3, wherein: the bottom of the injection push rod is provided with a pressure sensor; the connecting sleeve is arranged on the supporting block and between the injection tube and the box body; one end of the connecting sleeve is sleeved at the bottom of the injection push rod, and the end face of the connecting sleeve is provided with a groove matched with the pressure sensor; the sensing surface of the pressure sensor is abutted against the end surface of the groove; the other end of the connecting sleeve is sleeved on the extending end of the sliding plate; the injection push rod and the sliding plate are both arranged on the central axis of the connecting sleeve.
5. The syringe of claim 1, wherein: the box body is transparent in color.
6. The syringe of claim 3, wherein: and a circle of positioning line is arranged on the outer wall of the injection cylinder.
7. The syringe of claim 1, wherein: the translation plate and the sliding plate are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921651750.XU CN211383200U (en) | 2019-09-30 | 2019-09-30 | Constant pressure syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921651750.XU CN211383200U (en) | 2019-09-30 | 2019-09-30 | Constant pressure syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211383200U true CN211383200U (en) | 2020-09-01 |
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ID=72206570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921651750.XU Active CN211383200U (en) | 2019-09-30 | 2019-09-30 | Constant pressure syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211383200U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112354713A (en) * | 2020-10-30 | 2021-02-12 | 广州市盛华实业有限公司 | Spray gun coating device |
-
2019
- 2019-09-30 CN CN201921651750.XU patent/CN211383200U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112354713A (en) * | 2020-10-30 | 2021-02-12 | 广州市盛华实业有限公司 | Spray gun coating device |
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