CN219022676U

CN219022676U - Novel microinjection pump

Info

Publication number: CN219022676U
Application number: CN202320092560.9U
Authority: CN
Inventors: 韩红军
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-01-31
Filing date: 2023-01-31
Publication date: 2023-05-16
Anticipated expiration: 2033-01-31

Abstract

The utility model discloses a novel microinjection pump, which has the technical scheme that: the micro pump comprises a micro pump body, wherein a chute and a groove are arranged on one side of the micro pump body, and a rotary buckle is arranged on the left side of the chute; the right end of the sliding chute is provided with a movable rod, the outer end of the movable rod is fixedly connected with a connecting sleeve, the connecting sleeve is arranged on one side of the connecting block, the other side of the connecting block is fixedly provided with a pushing block, the outer wall of one side of the pushing block is provided with a clamping groove, and the inner wall of the pushing block is rotationally connected with a pre-tightening device; the tail part of a piston push rod of the injector is arranged in the clamping groove, the tail part of the piston push rod is in extrusion contact with the pre-tightening device, the supporting handle of the injector is arranged in the groove, and the injector main body is fixed through the rotary buckle. The utility model has the beneficial effects that: the problem that the accuracy of the micropump can be influenced by a gap between the tail part of the piston push rod of the injector and the propelling device is solved, and the tail part of the piston push rod is pre-tightened, so that the accuracy of the micropump is ensured.

Description

Novel microinjection pump

Technical Field

The utility model relates to the technical field of micropumps, in particular to a novel micropump.

Background

The micro-injection pump is a novel pumping instrument, can accurately, uniformly and continuously output a small amount of fluid, consists of a micro-pump body and an actuating mechanism, and can meet the requirements, such as the requirements of accurate drug infusion, accurate chemical agent addition and the like, in an environment requiring accurate infusion. The existing actuating mechanism of the microinjection pump has the following problems: one method is that the injector clamping mechanism in the actuating mechanism can clamp injectors of different types by adopting a clamping rotary handle, but the spring has a fatigue period and needs to be replaced regularly, otherwise, the problem of unclamping is caused; another approach is to use a direct contact syringe tail, but only a propulsion mechanism is used to push the syringe tail, and the syringe tail cannot be pulled in the reverse direction; in addition, there may be a certain gap during operation, where the microinjection pump needs an operator to set the distance for pushing the syringe and the time for pushing the syringe for these distances, the existing gap also needs the operator to consider and calculate the gap, which would otherwise cause the amount of the medicine pushed out by the syringe to be less than the specified amount of the medicine, and the purpose of accurate injection cannot be achieved.

The medical microinjection pump comprises a microinjection pump body, a syringe clamping mechanism and a syringe propelling mechanism, wherein the syringe clamping mechanism comprises a fixed shaft arranged on the microinjection pump body, a clamping rotary handle movably arranged on the fixed shaft, an adjusting knob in threaded connection with one end of the fixed shaft far away from the microinjection pump body and a compression spring. The function of clamping the injector can be realized through the injector clamping mechanism, but the problem that the spring is tired and needs to be replaced when the injector is used for a long time exists.

Therefore, it is necessary to design a novel microinjection pump.

Disclosure of Invention

Aiming at the problems mentioned in the prior art, the utility model provides a novel micro-injection pump which can play a role in pre-tightening and fixing the tail part of an injector so as to ensure the injection precision of the micro-injection pump.

The utility model provides the following technical scheme: the novel micro-injection pump comprises a micro-pump body (1), more than one group of sliding grooves (17) arranged in the horizontal direction are arranged on one side of the micro-pump body (1), grooves (18) arranged in the vertical direction are arranged on the right side of the sliding grooves (17), and rotary buckles (19) are arranged on the left side of the sliding grooves (17); the right end of the sliding groove (17) is provided with a moving rod (2), the outer end of the moving rod (2) is fixedly connected with a connecting sleeve (3), the connecting sleeve (3) is arranged on one side of a connecting block (4), a pushing block (5) is fixedly arranged on the other side of the connecting block (4), a clamping groove (6) is formed in the outer wall of one side of the pushing block (5), and a pre-tightening device is rotatably connected to the inner wall of the pushing block (5); the tail part of a piston push rod of the injector is arranged in the clamping groove (6), the tail part of the piston push rod is in extrusion contact with the pre-tightening device, the supporting handle of the injector is arranged in the groove (18), and the injector main body is fixed through the rotary buckle (19).

Preferably, the pre-tightening device comprises a moving block (7), a rotating handle (8) and a threaded rod (9), wherein the moving block (7) is installed in an inner cavity of the pushing block (5), one end of the moving block (7) is fixedly contacted with the tail of a piston push rod installed in a clamping groove (6), the other end of the moving block is connected with the threaded rod (9), the threaded rod (9) penetrates through the inner cavity of the pushing block (5), the outer end of the threaded rod (9) is provided with the rotating handle (8), and the threaded rod (9) is driven to move in a rotating mode through the rotating handle (8), so that the moving block (7) is close to or far away from the tail of the piston push rod.

Preferably, the clamping groove (6) is of a semi-annular structure, and the gap of the clamping groove (6) is larger than the thickness of the tail part of the piston push rod; the outside of draw-in groove (6) is equipped with the breach, and the width of breach is greater than the external diameter of the piston push rod of syringe.

Preferably, the pre-tightening device comprises a sliding block (10), a bolt (11) and a rotating block (12), wherein the outer wall of the sliding block (10) is in sliding connection with the inner wall of the pushing block (5), the inner wall of the pushing block (5) is in threaded connection with the outer wall of the bolt (11), the outer wall of the bolt (11) is fixedly connected with the inner wall of the rotating block (12), and the outer wall of the rotating block (12) is in contact with the outer wall of the right side of the sliding block (10).

Preferably, the rotating block (12) comprises a round part and a protruding part, wherein the round part occupies three quarters, the protruding part occupies one quarter, and the sliding block (10) is pressed by the protruding part, so that the sliding block (10) contacts with the tail part of the piston push rod.

Preferably, two sliding grooves (17) are arranged, and the two sliding grooves (17) are parallel to each other.

The beneficial effects of the utility model are as follows: the utility model solves the problem that the clearance between the tail part of the piston push rod of the injector and the propelling device can influence the precision of the micro pump by providing two schemes, firstly, the tail part of the piston push rod of the injector can be clamped in the clamping groove of the propelling device by arranging the clamping groove, and then the threaded rod is advanced by rotating the rotary handle, so that the moving block is pushed to advance to extrude the tail part of the piston push rod, thus the tail part of the piston push rod is contacted with the pushing block, the pre-tightening effect is realized, the clearance is eliminated, and the precision of the micro pump is ensured;

the second scheme, similar to the first scheme, also needs to clamp the tail part of the piston push rod in the clamping groove, and the rotary block protruding part is made to push the sliding block to extrude the tail part of the piston push rod through the rotary bolt, so that the piston push rod tail part is pre-tightened, the gap is eliminated, and the accuracy of the micro pump is ensured.

Drawings

FIG. 1 is a front view of embodiment 1 provided by the present utility model;

fig. 2 is a front view of the pretensioner device in embodiment 1 provided by the present utility model;

FIG. 3 is a rear view of the pretensioning apparatus of embodiment 1 provided by the present utility model;

FIG. 4 is a cross-sectional view of the pretensioning apparatus of embodiment 1 provided by the present utility model;

FIG. 5 is a front view of the pretensioner apparatus according to embodiment 2 of the present utility model;

FIG. 6 is a cross-sectional view of the pretensioner apparatus of embodiment 2 provided by the present utility model;

FIG. 7 is a top view of a rotor block according to example 2 of the present utility model;

FIG. 8 is a schematic view of the overall structure of the syringe of the present utility model after the syringe is installed;

in the figure: the micro pump comprises a micro pump body 1, a movable rod 2, a connecting sleeve 3, a connecting block 4, a pushing block 5, a clamping groove 6, a movable block 7, a rotary handle 8, a threaded rod 9, a sliding block 10, a bolt 11, a rotating block 12, a fixed plate 13, a connecting groove 14, a rotating shaft 15, a torsion spring 16, a chute 17, a groove 18, a rotary buckle 19 and a syringe a.

Detailed Description

The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.

1, referring to fig. 1-4, the novel micro injection pump provided by the utility model comprises a micro pump body 1, more than one group of sliding grooves 17 arranged in the horizontal direction are arranged on one side of the micro pump body 1, grooves 18 arranged in the vertical direction are arranged on the right side of the sliding grooves 17, and rotary buckles 19 are arranged on the left side of the sliding grooves 17; the right end of the chute 17 is provided with a movable rod 2, the inner end of the movable rod 2 is connected to a power device of the micro pump body 1, the outer end of the movable rod 2 is fixedly connected with a connecting sleeve 3, the connecting sleeve 3 is arranged on one side of a connecting block 4, the other side of the connecting block 4 is fixedly provided with a pushing block 5, the outer wall of one side of the pushing block 5 is provided with a clamping groove 6, and the inner wall of the pushing block 5 is rotationally connected with a pre-tightening device; the tail of the piston push rod of the injector is arranged in the clamping groove 6 and is in extrusion contact with the tail of the piston push rod through a pre-tightening device, the supporting handle of the injector is arranged in the groove 18, and the main body of the injector is fixed through the rotary buckle 19.

Wherein, above-mentioned preloading device includes movable block 7, rotatory handle 8, threaded rod 9, the movable block 7 is installed at the push block 5 inner chamber, and the one end of movable block 7 is fixed with the piston push rod afterbody contact of draw-in groove 6 installation, and threaded rod 9 is connected to the other end, threaded rod 9 passes the inner chamber of push block 5, and the outer end of threaded rod 9 is equipped with rotatory handle 8, drives threaded rod 9 rotary motion through rotatory handle 8, makes movable block 7 be close to or keep away from the piston push rod afterbody.

In addition, the clamping groove 6 is of a semi-annular structure, and the gap of the clamping groove 6 is larger than the thickness of the tail part of the piston push rod; the outside of draw-in groove 6 is equipped with the breach, and the width of breach is greater than the external diameter of the piston push rod of syringe.

Preferably, there are two sliding grooves 17, and the two sliding grooves 17 are parallel to each other.

The application principle of the utility model is as follows: through setting up the draw-in groove for the piston push rod afterbody of syringe can block in advancing device's draw-in groove, and the rethread rotates rotatory handle and makes the threaded rod advance, thereby promotes the movable block and advances extrusion piston push rod afterbody, makes piston push rod afterbody and promote the piece contact like this, plays a pretension's effect, has eliminated the clearance, thereby has guaranteed the precision of micropump;

example 2:

the utility model provides a novel micro injection pump, which comprises a micro pump body 1, wherein one side of the micro pump body 1 is provided with more than one group of sliding grooves 17 arranged in the horizontal direction, the right side of the sliding grooves 17 is provided with grooves 18 arranged in the vertical direction, and the left side of the sliding grooves 17 is provided with rotary buckles 19; the right end of the chute 17 is provided with a movable rod 2, the inner end of the movable rod 2 is connected to a power device of the micro pump body 1, the outer end of the movable rod 2 is fixedly connected with a connecting sleeve 3, the connecting sleeve 3 is arranged on one side of a connecting block 4, the other side of the connecting block 4 is fixedly provided with a pushing block 5, the outer wall of one side of the pushing block 5 is provided with a clamping groove 6, and the inner wall of the pushing block 5 is rotationally connected with a pre-tightening device; the tail of the piston push rod of the injector is arranged in the clamping groove 6 and is in extrusion contact with the tail of the piston push rod through a pre-tightening device, the supporting handle of the injector is arranged in the groove 18, and the main body of the injector is fixed through the rotary buckle 19.

The difference from example 1 is that:

referring to fig. 5-7, the pre-tightening device in this embodiment includes a sliding block 10, a bolt 11, and a rotating block 12, where the outer wall of the sliding block 10 is slidably connected with the inner wall of the pushing block 5, the inner wall of the pushing block 5 is in threaded connection with the outer wall of the bolt 11, the outer wall of the bolt 11 is fixedly connected with the inner wall of the rotating block 12, and the outer wall of the rotating block 12 is in contact with the outer wall of the right side of the sliding block 10.

The rotating block 12 includes a circular portion and a protruding portion, the circular portion occupies three quarters, the protruding portion occupies one quarter, and the protruding portion presses the sliding block 10 to make the sliding block 10 contact with the tail of the piston rod.

The working principle of the utility model is as follows: as in embodiment 1, the tail of the piston push rod is also to be clamped in the clamping groove, and the rotating block protruding part is made to push the sliding block to extrude the tail of the piston push rod through the rotating bolt, so that the tail of the piston push rod can be pre-tightened, a gap is eliminated, and the accuracy of the micro pump is ensured.

The above description is only of the preferred embodiments of the present utility model, and any person skilled in the art may modify the present utility model or make modifications to the present utility model equivalent thereto using the technical solutions described above. Therefore, any simple modification or equivalent made according to the technical solution of the present utility model falls within the scope of the protection claimed by the present utility model.

Claims

1. The utility model provides a novel microinjection pump, includes micropump body (1), its characterized in that: more than one group of sliding grooves (17) arranged in the horizontal direction are arranged on one side of the micropump body (1), grooves (18) arranged in the vertical direction are arranged on the right side of the sliding grooves (17), and rotary buckles (19) are arranged on the left side of the sliding grooves (17); the right end of the sliding groove (17) is provided with a moving rod (2), the outer end of the moving rod (2) is fixedly connected with a connecting sleeve (3), the connecting sleeve (3) is arranged on one side of a connecting block (4), a pushing block (5) is fixedly arranged on the other side of the connecting block (4), a clamping groove (6) is formed in the outer wall of one side of the pushing block (5), and a pre-tightening device is rotatably connected to the inner wall of the pushing block (5); the tail part of a piston push rod of the injector is arranged in the clamping groove (6), the tail part of the piston push rod is in extrusion contact with the pre-tightening device, the supporting handle of the injector is arranged in the groove (18), and the injector main body is fixed through the rotary buckle (19).

2. A novel microinjection pump according to claim 1, characterized in that: the pre-tightening device comprises a moving block (7), a rotating handle (8) and a threaded rod (9), wherein the moving block (7) is installed in an inner cavity of the pushing block (5), one end of the moving block (7) is fixedly contacted with the tail of a piston push rod installed in a clamping groove (6), the other end of the moving block is connected with the threaded rod (9), the threaded rod (9) penetrates through the inner cavity of the pushing block (5), the rotating handle (8) is arranged at the outer end of the threaded rod (9), and the threaded rod (9) is driven to move in a rotating mode through the rotating handle (8), so that the moving block (7) is close to or far away from the tail of the piston push rod.

3. A novel microinjection pump according to claim 2, characterized in that: the clamping groove (6) is of a semi-annular structure, and the gap of the clamping groove (6) is larger than the thickness of the tail part of the piston push rod; the outside of draw-in groove (6) is equipped with the breach, and the width of breach is greater than the external diameter of the piston push rod of syringe.

4. A novel microinjection pump according to claim 1, characterized in that: the pre-tightening device comprises a sliding block (10), a bolt (11) and a rotating block (12), wherein the outer wall of the sliding block (10) is in sliding connection with the inner wall of the pushing block (5), the inner wall of the pushing block (5) is in threaded connection with the outer wall of the bolt (11), the outer wall of the bolt (11) is fixedly connected with the inner wall of the rotating block (12), and the outer wall of the rotating block (12) is in contact with the outer wall of the right side of the sliding block (10).

5. The novel microinjection pump according to claim 4, wherein: the rotating block (12) comprises a round part and a protruding part, the round part occupies three quarters, the protruding part occupies one quarter, and the sliding block (10) is extruded by the protruding part, so that the sliding block (10) is contacted with the tail of the piston push rod.

6. A novel microinjection pump according to claim 1, characterized in that: the number of the sliding grooves (17) is two, and the two sliding grooves (17) are parallel to each other.