CN219231024U

CN219231024U - Automatic uniform-speed pushing injection pump

Info

Publication number: CN219231024U
Application number: CN202221562574.4U
Authority: CN
Inventors: 张功华; 唐明波; 周涛; 宋凯; 武亚雄; 张勇; 刘磊
Original assignee: Shenzhen Le Medical Technology Co ltd
Current assignee: Shenzhen Le Medical Technology Co ltd
Priority date: 2022-06-21
Filing date: 2022-06-21
Publication date: 2023-06-23
Anticipated expiration: 2032-06-21

Abstract

The utility model discloses an automatic constant-speed pushing injection pump, which comprises a shell, a motor, a screw rod, a guide driving assembly and an injector clamping assembly, wherein the motor is arranged on the shell, two ends of the screw rod are respectively fixedly arranged on two sides of the shell, the motor directly or indirectly drives the screw rod, the guide driving assembly is arranged on the shell corresponding to the position of the screw rod, one end of the guide driving assembly is in sliding connection with the screw rod, the guide driving assembly can move relative to the screw rod, the other end of the guide driving assembly is fixedly connected with the injector clamping assembly, the injector clamping assembly is pushed to move by adopting the guide driving assembly, so that the stable movement of an injector is ensured, and the structure of the injection pump is simplified by adopting the direct or indirect connection of the motor and the screw rod, so that the injection pump has a simple integral structure and is easy to produce and install.

Description

Automatic uniform-speed pushing injection pump

Technical Field

The utility model relates to a syringe pump, in particular to an automatic constant-speed pushing syringe pump, which is applied to the field of medical equipment.

Background

The daily injection volume of hospital is very big, and nurse is because a large amount of syringes are injected the work, and the burden is heavier, often causes the aching of palm. Particularly, for intravenous injection of a medicament with high viscosity, such as iodized oil injection, the injection is extremely laborious due to the high viscosity of the iodized oil, the injection amount of one treatment course is relatively large, and one nurse is difficult to finish, so that two nurses are often required to alternately inject the medicament to finish one treatment course.

In order to solve the above problems, various syringe pumps for syringes, which are composed of a stepping motor and its driver, a screw, a bracket, etc., have a reciprocating screw, a nut, and thus are also called screw pumps, have been developed. However, the conventional syringe pumps of most syringes at present have complex structures and are difficult to control with high precision, so that the syringes have poor stability and cannot be automatically injected at a constant speed.

Disclosure of Invention

Aiming at the problems that the structure of the common injection pump in the prior art is complex, the high-precision control is difficult, and the stability of the injector is poor, the utility model provides an automatic constant-speed pushing injection pump which can ensure the stable movement of the injector by pushing the injector clamping assembly to move through adopting a guide driving assembly, and the structure of the injection pump is simplified by adopting the direct or indirect connection of a motor and a screw rod, so that the integral structure of the injection pump is simple, and the production and the installation are easy.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides an automatic at uniform velocity propelling movement syringe pump, the syringe pump includes casing, motor, lead screw, direction drive assembly and syringe clamping assembly, the motor sets up on the casing, lead screw both ends are fixed mounting respectively on the both sides of casing, the motor is direct or indirect drive the lead screw, direction drive assembly corresponds the lead screw position sets up on the casing, direction drive assembly one end with lead screw sliding connection, direction drive assembly can move relative the lead screw, the direction drive assembly other end with syringe clamping assembly fixed connection.

Further, the guiding driving assembly comprises a guiding shaft, a pushing tube, a sliding support and a clutch plate, wherein the guiding shaft penetrates through the sliding support, the guiding shaft is fixedly arranged on the shell corresponding to the position of the screw rod, one end of the pushing tube penetrates through the shell and is fixedly connected with the sliding support, the other end of the pushing tube is fixedly connected with the injector clamping assembly, one side of the clutch plate is directly or indirectly connected with the sliding support, threads corresponding to the screw rod are arranged on the clutch plate, and the clutch plate is meshed with the screw rod.

Further, the guiding driving assembly further comprises a sliding plate, the sliding plate is arranged on the shell corresponding to the position of the guiding shaft, the sliding plate is arranged below the guiding shaft, a sliding rail is arranged on the sliding plate corresponding to the position of the sliding support, a protrusion is arranged on the sliding support, and the protrusion is arranged in the sliding rail.

Further, the guiding driving assembly further comprises a transmission shaft, a torsion spring and a pressing plate, wherein the torsion spring is arranged between the clutch plate and the sliding support, one end of the torsion spring is movably connected with the clutch plate, the other end of the torsion spring is inserted on the sliding support, the pressing plate is arranged outside the clamping assembly, the transmission shaft is arranged in the pushing tube, one end of the transmission shaft penetrates through the sliding support and the torsion spring to be fixedly connected with the clutch plate, and the other end of the transmission shaft penetrates through the injector clamping assembly to be fixedly connected with the pressing plate.

Further, syringe clamping assembly includes centre gripping front bezel and centre gripping back plate, centre gripping front bezel and centre gripping back plate lock each other, towards on the centre gripping front bezel the casing position is equipped with the clamping part, be equipped with the through-hole on the centre gripping back plate, clamp plate one end pass the through-hole with the transmission shaft is connected.

Further, a clamping part is arranged on the clutch plate corresponding to the position of the torsion spring, and one end of the torsion spring is arranged in the clamping part.

Further, a groove is formed in the connection part of the push tube and the sliding support, a clamping hole is formed in the position, corresponding to the groove, of the sliding support, and the bolt penetrates through the clamping hole to be clamped with the groove.

Further, a clamping ring is arranged at one end of the transmission shaft, facing the sliding support, and is arranged in the push pipe and can be abutted with the bolt.

Further, a gear set is arranged on the shell corresponding to the position of the motor, the driving end of the motor is fixedly connected with one end of the gear set, and the other end of the gear set is fixedly connected with the screw rod.

Further, the gear set comprises a first gear, a double-row gear and a second gear, the double-row gear is arranged on the shell through a connecting shaft, the first gear is fixedly connected with the driving end of the motor, the first gear is meshed with the outer side gear of the double-row gear, the second gear is fixedly connected with the screw rod, and the second gear is meshed with the inner side gear of the double-row gear.

The utility model has the beneficial effects that: the utility model provides an automatic constant-speed pushing injection pump, which pushes an injector clamping assembly to move by adopting a guide driving assembly, so that the stable movement of an injector is ensured, and the structure of the injection pump is simplified by adopting direct or indirect connection of a motor and a screw rod, so that the injection pump has a simple integral structure and is easy to produce and install.

Drawings

FIG. 1 is a schematic diagram of an automatic constant speed pushing syringe pump according to the present utility model;

FIG. 2 is an exploded view of the automatic constant speed push syringe pump provided by the present utility model;

FIG. 3 is an enlarged schematic view of the structure at A of FIG. 2;

fig. 4 is an enlarged structural schematic diagram at B of fig. 2.

Reference numerals: 1-a housing; 2-an electric motor; 3-a screw rod; 4-guiding the driving assembly; 41-a guide shaft; 42-pushing the tube; 421-grooves; 43-sliding support; 431-bump; 432-clamping holes; 44-a separator plate; 441-a clamping part; 45-sliding plate; 451-sliding rails; 46-a transmission shaft; 461-snap ring; 47-torsion spring; 48-pressing plate; 49-a bolt; a 5-syringe clamping assembly; 51-clamping the front plate; 52-clamping the rear plate; 53-a clamping portion; 6-gear set; 61-a first gear; 62-double row gears; 63-a second gear; 64-connecting shaft.

Detailed Description

In order to make the objects, technical solutions and effects of the present utility model clearer and more specific, the present utility model will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1-4, the automatic constant-speed pushing injection pump provided by the utility model comprises a shell 1, a motor 2, a screw rod 3, a guide driving assembly 4 and an injector clamping assembly 5, wherein the motor 2 is arranged on the shell 1, two ends of the screw rod 3 are respectively and fixedly arranged on two sides of the shell 1, the screw rod 3 can be directly driven by the motor 2, the screw rod 3 can also be indirectly driven by the motor 2 according to requirements, for example, a gear or a belt or the like is adopted, the guide driving assembly 4 is arranged on the shell 1 corresponding to the position of the screw rod 3, one end of the guide driving assembly 4 is in sliding connection with the screw rod 3, the guide driving assembly 4 can move relative to the screw rod 3, the other end of the guide driving assembly 4 is fixedly connected with the injector clamping assembly 5, in particular implementation, the screw rod 3 is rotated by the motor 2, the guide driving assembly 4 moves under the rotation of the screw rod 3, and the injector arranged on the injector clamping assembly 5 is driven to work uniformly, and meanwhile, the motor is directly or indirectly connected with the screw rod, so that the structure of the injection pump is simplified, the whole structure is easy, the space utilization and the installation rate is high.

In this embodiment, the guiding driving assembly 4 includes a guiding shaft 41, a pushing tube 42, a sliding support 43 and a clutch plate 44, the guiding shaft 41 passes through the sliding support 43, the guiding shaft 41 is fixedly installed on the housing 1 corresponding to the position of the screw rod 3, the guiding shaft 41 is parallel to the screw rod 3, one end of the pushing tube 42 passes through the housing 1 and is fixedly connected with the sliding support 43, the other end of the pushing tube 42 is fixedly connected with the injector clamping assembly 5, one side of the clutch plate 44 is directly or indirectly connected with the sliding support 43, threads corresponding to the screw rod 3 are provided on the clutch plate 44, the clutch plate 44 is meshed with the screw rod 3, when the screw rod 3 rotates, the clutch plate 44 is driven to move, thereby driving the sliding support 43, under the action of the guiding shaft 41, the pushing tube 42 is horizontally moved, and stability during injection is ensured.

In this embodiment, in order to perform one-step injection to ensure stability, the guiding driving assembly 4 further includes a sliding plate 45, the sliding plate 45 is disposed on the housing 1 corresponding to the position of the guiding shaft 41, the sliding plate 45 is disposed below the guiding shaft 41, a sliding rail 451 is disposed on the sliding plate 45 corresponding to the position of the sliding bracket 43, a protrusion 431 is disposed on the sliding bracket 43, and the protrusion 431 is disposed in the sliding rail 451, and by adopting the sliding plate 45 to cooperate with the guiding shaft 41, the stability of the whole sliding bracket 43 is stronger when moving.

In this embodiment, the conventional syringe pump can only be stopped by closing the switch, so that the temporary type syringe pump can be controlled inconveniently, the motor and related components can be damaged after long-term use, the guide driving assembly 4 further comprises a transmission shaft 46, a torsion spring 47 and a pressing plate 48, the torsion spring 47 is arranged between the clutch plate 44 and the sliding support 43, one end of the torsion spring 47 is movably connected with the clutch plate 44, the other end of the torsion spring 47 is inserted on the sliding support 43, the pressing plate 48 is arranged outside the clamping assembly, the transmission shaft 46 is arranged in the push tube 42, one end of the transmission shaft 46 passes through the sliding support 43 and the torsion spring 47 to be fixedly connected with the clutch plate 44, the other end of the transmission shaft 46 passes through the syringe clamping assembly 5 to be fixedly connected with the pressing plate 48, the transmission shaft 46 is rotated by pressing the pressing plate 48, so that the clutch plate 44 is driven to rotate, the clutch plate 44 is separated from the screw rod, the clutch plate 44 is meshed with the screw rod under the action of the torsion spring 47 when the pressing plate 48 is not pressed, the syringe pump is operated again, and the pause control is convenient. In this embodiment, in order to facilitate connection between the clutch plate 44 and the torsion spring 47, a clamping portion 441 is disposed on the clutch plate 44 corresponding to the position of the torsion spring 47, and one end of the torsion spring 47 is disposed in the clamping portion 441.

In this embodiment, the injector clamping assembly 5 includes a front clamping plate 51 and a rear clamping plate 52, the front clamping plate 51 and the rear clamping plate 52 are fastened to each other, the front clamping plate 51 and the rear clamping plate 52 may also be integrally formed, a clamping portion 53 is disposed on the front clamping plate 51 toward the housing 1, the clamping portion 53 is used for fixing the tail of the injector, a through hole is disposed on the rear clamping plate 52, and one end of the pressing plate 48 is connected with the transmission shaft 46 through the through hole.

In this embodiment, the replacement of parts is convenient, and its junction with the sliding support 43 is equipped with recess 421 on push tube 42, and sliding support 43 corresponds the recess 421 position and is equipped with joint hole 432, and bolt 49 passes joint hole 432 and recess 421 looks block, through adopting bolt 49 to conveniently install and dismantle, conveniently maintains.

In this embodiment, in order to further facilitate the movement of the clutch plate 44, a snap ring 461 is disposed at one end of the transmission shaft 46 facing the sliding support 43, the snap ring 461 is disposed in the push tube 42 and can be abutted against the latch 49, and when the clutch plate 44 moves, the push tube 42 is limited by the snap ring 461 to prevent separation of the transmission shaft 46 and the push tube 42, thereby affecting the use of the syringe pump.

In this embodiment, preferably, the gear set 6 is disposed on the housing 1 at a position corresponding to the motor 2, the driving end of the motor 2 is fixedly connected with one end of the gear set 6, the other end of the gear set 6 is fixedly connected with the screw rod 3, and in a specific implementation, a belt driving mode or a link driving mode may also be adopted, in this embodiment, preferably, the gear set 6 includes a first gear 61, a double-row gear 62 and a second gear 63, the double-row gear 62 is disposed on the housing 1 through a connecting shaft 64, the first gear 61 is fixedly connected with the driving end of the motor 2, the first gear 61 is meshed with an outer side gear of the double-row gear 62, the second gear 63 is fixedly connected with the screw rod 3, the second gear 63 is meshed with an inner side gear of the double-row gear 62, and the first gear 61 and the second gear 63 may also be directly connected, but the direct connection is inconvenient for detecting the injection speed.

It is to be understood that the utility model is not limited in its application to the examples described above, but is capable of modification and variation in light of the above teachings by those skilled in the art, and that all such modifications and variations are intended to be included within the scope of the appended claims.

Claims

1. The utility model provides an automatic at uniform velocity propelling movement syringe pump, its characterized in that, syringe pump includes casing (1), motor (2), lead screw (3), direction drive assembly (4) and syringe clamping assembly (5), motor (2) set up on casing (1), lead screw (3) both ends are fixed mounting respectively on the both sides of casing (1), motor (2) direct or indirect drive lead screw (3), direction drive assembly (4) correspond lead screw (3) position sets up on casing (1), direction drive assembly (4) one end with lead screw (3) sliding connection, direction drive assembly (4) can remove relative lead screw (3), the direction drive assembly (4) other end with syringe clamping assembly (5) fixed connection.

2. An automatic constant-speed pushing injection pump according to claim 1, wherein the guiding driving assembly (4) comprises a guiding shaft (41), a pushing tube (42), a sliding support (43) and a clutch plate (44), the guiding shaft (41) penetrates through the sliding support (43), the guiding shaft (41) is fixedly arranged on the shell (1) corresponding to the screw rod (3), one end of the pushing tube (42) penetrates through the shell (1) and is fixedly connected with the sliding support (43), the other end of the pushing tube (42) is fixedly connected with the injector clamping assembly (5), one side of the clutch plate (44) is directly or indirectly connected with the sliding support (43), threads corresponding to the screw rod (3) are arranged on the clutch plate (44), and the clutch plate (44) is meshed with the screw rod (3).

3. An automatic constant speed pushing injection pump according to claim 2, wherein the guiding driving assembly (4) further comprises a sliding plate (45), the sliding plate (45) is arranged on the housing (1) corresponding to the position of the guiding shaft (41), the sliding plate (45) is arranged below the guiding shaft (41), a sliding rail (451) is arranged on the sliding plate (45) corresponding to the position of the sliding bracket (43), a protrusion (431) is arranged on the sliding bracket (43), and the protrusion (431) is arranged in the sliding rail (451).

4. The automatic constant-speed pushing injection pump according to claim 2, wherein the guiding driving assembly (4) further comprises a transmission shaft (46), a torsion spring (47) and a pressing plate (48), the torsion spring (47) is arranged between the clutch plate (44) and the sliding support (43), one end of the torsion spring (47) is movably connected with the clutch plate (44), the other end of the torsion spring (47) is inserted on the sliding support (43), the pressing plate (48) is arranged outside the clamping assembly, the transmission shaft (46) is arranged in the pushing tube (42), one end of the transmission shaft (46) penetrates through the sliding support (43) and the torsion spring (47) to be fixedly connected with the clutch plate (44), and the other end of the transmission shaft (46) penetrates through the injector clamping assembly (5) to be fixedly connected with the pressing plate (48).

5. An automatic constant speed pushing injection pump according to claim 4, wherein the injector clamping assembly (5) comprises a front clamping plate (51) and a rear clamping plate (52), the front clamping plate (51) and the rear clamping plate (52) are buckled with each other, a clamping part (53) is arranged on the front clamping plate (51) towards the position of the shell (1), a through hole is arranged on the rear clamping plate (52), and one end of the pressing plate (48) passes through the through hole and is connected with the transmission shaft (46).

6. The automatic constant-speed pushing injection pump according to claim 4, wherein a clamping portion (441) is disposed on the clutch plate (44) corresponding to the torsion spring (47), and one end of the torsion spring (47) is disposed in the clamping portion (441).

7. The automatic uniform-speed pushing injection pump according to claim 4, wherein a groove (421) is formed in the connection part of the pushing tube (42) and the sliding support (43), a clamping hole (432) is formed in the position, corresponding to the groove (421), of the sliding support (43), and the bolt (49) passes through the clamping hole (432) to be clamped with the groove (421).

8. An automatic constant speed pushing injection pump according to claim 7, characterized in that a snap ring (461) is arranged at one end of the transmission shaft (46) facing the sliding support (43), and the snap ring (461) is arranged in the push tube (42) and can be abutted with the plug pin (49).

9. An automatic constant speed pushing injection pump according to any one of claims 1-8, wherein a gear set (6) is arranged on the housing (1) at a position corresponding to the motor (2), the driving end of the motor (2) is fixedly connected with one end of the gear set (6), and the other end of the gear set (6) is fixedly connected with the screw rod (3).

10. The automatic constant-speed pushing injection pump according to claim 9, wherein the gear set (6) comprises a first gear (61), a double-row gear (62) and a second gear (63), the double-row gear (62) is arranged on the shell (1) through a connecting shaft (64), the first gear (61) is fixedly connected with the driving end of the motor (2), the first gear (61) is meshed with an outer side row gear of the double-row gear (62), the second gear (63) is fixedly connected with the screw rod (3), and the second gear (63) is meshed with an inner side row gear of the double-row gear (62).