CN215504885U

CN215504885U - Double-motor independent infusion system

Info

Publication number: CN215504885U
Application number: CN202023338660.0U
Authority: CN
Inventors: 李荣毓
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2022-01-14
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses a double-motor independent infusion system, which comprises a shell, a motor and a medicine storage bin, wherein 2 independent cavities are arranged in the shell, the motor is arranged in the cavities and is provided with a threaded driving shaft, a push rod is detachably arranged in each cavity, the push rod can slide up and down along the axial direction of each cavity, and a guide sleeve is sleeved on the push rod and used for guiding the push rod to slide up and down; the top of the medicine storage bin is provided with a liquid medicine infusion port which is connected with an infusion hose; the bottom of the medicine storage bin is provided with an insertion hole, a piston capable of sliding up and down along the axial direction of the medicine storage bin is arranged in the medicine storage bin, and the piston and the medicine storage bin are in close fit; the push rod is in threaded connection with the threaded driving shaft, when the motor rotates forwards or reversely, the push rod is pushed to slide up and down along the axial direction of the medicine storage bin through the threaded connection, and when the push rod slides upwards, the push piston moves upwards to output the liquid medicine to the infusion hose through the infusion port. The system can realize infusion of two different liquid medicines simultaneously, has stable and reliable structure, and can better control the infusion precision of the liquid medicines.

Description

Double-motor independent infusion system

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a dual-motor independent infusion system.

Background

The existing liquid medicine injector comprises a single-cavity injector and a double-cavity injector, wherein the single-cavity injector can only complete the injection of one liquid medicine, when the second liquid medicine needs to be injected, the liquid medicine needs to be sucked again for injection, and the traditional liquid medicine injector is inconvenient in clinical application. For example, chinese patent document (application No. 201520074626.7) discloses a dual-chamber syringe for injecting high viscosity drugs, in which a push rod needs to be manually pushed, and the pushing force is not uniform, which is likely to cause discomfort to a patient. For another example, chinese patent document (application No. 202010571154.1) discloses an intraocular double-chamber injector with adjustable injection flow, in which the push rod is pneumatically pushed, and the requirement for air tightness is high.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problems in the prior art, the utility model provides a dual-motor independent infusion system.

In order to realize the purpose of the utility model, the adopted technical scheme is as follows: a dual-motor independent infusion system comprises a shell with 2 independent cavities inside and motors which are arranged at the bottoms of the cavities in a one-to-one correspondence mode with the cavities and are provided with threaded driving shafts, a medicine storage bin is detachably arranged at the upper part of each cavity, a push rod is arranged in each cavity in a vertically sliding mode along the axial direction of the corresponding cavity, a guide sleeve is sleeved on each push rod and used for guiding the push rod in a vertically sliding mode, and the guide sleeves are fixedly arranged in the cavities relative to the shell and located below the medicine storage bins;

the top of the medicine storage bin is provided with a liquid medicine infusion port, and the liquid medicine infusion port is connected with an infusion hose; the bottom of the medicine storage bin is provided with an insertion hole, a piston capable of sliding up and down along the axial direction of the medicine storage bin is arranged in the medicine storage bin, and the piston and the medicine storage bin are in close fit;

the push rod is in threaded connection with the threaded driving shaft, when the motor rotates forwards or reversely, the push rod is pushed to slide up and down along the axial direction of the medicine storage bin through the threaded connection, and when the push piston slides upwards, the medicine liquid is pushed to move upwards in the medicine storage bin to be output to the infusion hose through the infusion port.

Furthermore, the inner wall of the guide sleeve is provided with a first guide part along the axial direction, the push rod is provided with a second guide part, and the first guide part and the second guide part are matched in a sliding guide mode and used for guiding and stopping rotation of the push rod in a vertical sliding mode. Furthermore, the first guide part is a groove, and the second guide part is a bump; or the first guide part is a convex strip, the second guide part is a convex block provided with a notch, and the convex block is matched with the convex strip in a sliding guide mode through the notch.

Further, the top of cavity is equipped with the installing port, installing port department lock has the upper cover, and the through-hole has been seted up at the top of upper cover, the bottom of infusion hose is inserted in the upper cover and downwardly extending connects as to the infusion mouth in storage medicine storehouse via the through-hole. Furthermore, the inside of cavity is equipped with the annular flange, form the space of placing in storage medicine storehouse between the top of annular flange and cavity, storage medicine storehouse is located on the annular flange and storage medicine storehouse's top by the upper cover is spacing.

Furthermore, the outer wall of the threaded driving shaft is provided with external threads, the bottom of the push rod is provided with an inner hole along the axial direction of the push rod, and the inner wall of the inner hole is provided with internal threads matched with the external threads.

Furthermore, an annular groove is formed in the piston in the circumferential direction, an annular sealing ring is arranged in the annular groove, and the piston is in sealing fit through the annular sealing ring.

Furthermore, the bottom of the piston is provided with a blind hole at a position opposite to the push rod, and the top of the push rod is provided with a pushing part capable of being inserted into the blind hole.

Compared with the prior art, the utility model has the following beneficial effects: the dual-motor independent infusion system can simultaneously realize infusion of two different liquid medicines, has a stable and reliable structure, and can better control the infusion precision of the liquid medicines.

Drawings

Fig. 1 is a schematic structural view of a dual-motor independent infusion system in an embodiment of the present invention.

The reference numbers in the figures are: 1. the medicine storage device comprises a shell, 2 parts of a medicine storage bin, 3 parts of a piston, 4 parts of a guide sleeve, 5 parts of a first guide part, 6 parts of a second guide part, 7 parts of an infusion nozzle, 8 parts of a motor, 9 parts of a threaded driving shaft, 10 parts of an infusion hose, 11 parts of a mounting seat, 12 parts of a push rod, 13 parts of an upper cover, 14 parts of a sealing ring and 15 parts of an annular flange.

Detailed Description

The present invention is not limited to the following embodiments, and those skilled in the art can implement the present invention in other embodiments according to the disclosure of the present invention, or make simple changes or modifications on the design structure and idea of the present invention, and fall into the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Referring to fig. 1, the dual-motor independent infusion system comprises a shell 1 internally provided with 2 independent cavities and motors 8 which are arranged at the bottoms of the cavities in a one-to-one correspondence manner and are provided with threaded driving shafts 9, the upper parts of the cavities are detachably provided with medicine storage bins 2, push rods 12 are arranged in the cavities in a vertically slidable manner along the axial direction of the cavities, guide sleeves 4 are sleeved on the push rods 12 and used for guiding the push rods 12 in a vertically slidable manner, and the guide sleeves 4 are fixedly arranged in the cavities relative to the shell 1 and are positioned below the medicine storage bins 2;

the top of the medicine storage bin 2 is provided with a liquid medicine infusion port 7, and the liquid medicine infusion port 7 is connected with an infusion hose 10; the bottom of the medicine storage bin 2 is provided with an insertion hole, a piston 3 capable of sliding up and down along the axial direction of the medicine storage bin 2 is arranged in the medicine storage bin 2, and the piston 3 is in close fit with the medicine storage bin 2;

the push rod 12 is in threaded connection with the threaded driving shaft 9, when the motor 8 rotates forwards or reversely, the push rod 12 is pushed to slide up and down along the axial direction of the medicine storage bin 2 through the threaded connection, and when the push piston 3 slides upwards in the medicine storage bin 2, the liquid medicine is output to the infusion hose 10 through the infusion port 7.

The guiding and matching mode between the guide sleeve 4 and the push rod 12 is as follows: the inner wall of the guide sleeve 4 is provided with a first guide part 5 along the axial direction, the push rod 12 is provided with a second guide part 6, and the first guide part 5 is matched with the second guide part 6 in a sliding guide mode and used for guiding and stopping the push rod 12 to slide up and down. For example, the first guide part 5 is a groove, and the second guide part 6 is a bump; or, the first guide part 5 is a convex strip, the second guide part 6 is a convex block with a notch, and the convex block is matched with the convex strip in a sliding guide mode through the notch. The embodiment is the former, and the lug is located the bottom of push rod 12, and the lug sets up around the outer wall interval of push rod 12, and the recess corresponds with the lug one-to-one.

The concrete mode that realizes that 2 detachable settings in the cavity in storage medicine storehouse do: the top of cavity is equipped with the installing port, installing port department lock has upper cover 13, and the through-hole has been seted up at the top of upper cover 13, the bottom of infusion hose 10 is inserted in upper cover 13 and is extended downwards and connect as to infusion mouth 7 of storage drug bin 2 via the through-hole. The inside of cavity is equipped with annular flange 15, form the space of placing in storage medicine storehouse 2 between annular flange 15 and the top of cavity, storage medicine storehouse 2 is located on annular flange 15 and storage medicine storehouse 2's top by upper cover 13 is spacing. After medicine storehouse 2 absorbs the liquid medicine of setting for the volume, the lower extreme of infusion hose 10 is connected with infusion mouth 7 of this medicine storehouse 2 after penetrating through the through-hole of upper cover 13, then puts into the cavity and sits on annular flange 15 with medicine storehouse 2 from the installing port, then establishes upper cover 13 lock on the installing port, and then fixes medicine storehouse 2 between upper cover 13 and annular flange 15.

More specifically: the outer wall of the threaded driving shaft 9 is provided with external threads, the bottom of the push rod 12 is provided with an inner hole along the axial direction of the push rod 12, and the inner wall of the inner hole is provided with internal threads matched with the external threads. An annular groove is formed in the piston 3 in the circumferential direction, an annular sealing ring 14 is arranged in the annular groove, and the piston 3 is in sealing fit with the annular sealing ring 14. The bottom of piston 3 is used for having seted up the blind hole with the position that push rod 12 is relative, and the blind hole inner wall can set up the internal thread to threaded connection second push rod 12, second push rod 12 piston 3 cooperation form the piston 3 pole be convenient for inhale storage medicine storehouse 2 with the liquid medicine, treat to absorb and set for after the liquid medicine, demolish second push rod 12, the top of push rod 12 is equipped with the top portion of pushing away that can insert the blind hole.

In the dual-motor independent infusion system of the embodiment, after the two medicine storage bins 2 absorb different set amounts of liquid medicines and are correspondingly assembled to the cavity one by one, then the motor 8 is started, the motor 8 is controlled to drive the threaded driving shaft 9 to rotate, and then the threaded driving shaft slides upwards along the axial direction of the medicine storage bin 2 through the combined action of the threads, the first guide part 5 and the second guide part 6, and liquid medicine is pushed, then the liquid medicine is injected into the human body through the infusion hose 10, after the injection is finished, the motor 8 drives the threaded driving shaft 9 to rotate in the opposite direction, and then under the combined action of screw thread, first guide part 5 and second guide part 6, along the axial downstream in storage medicine storehouse 2 and then push rod 12 breaks away from piston 3 and playback, two motors 8 independent control of the independent infusion system of bi-motor of this embodiment can realize the infusion of two kinds of different liquid medicines, and mechanical structure is simple, well control and can accurate control liquid medicine output and injection volume. The drug storage bin 2, the infusion hose 10 and the piston 3 of the present embodiment are all disposable items.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and its concept within the technical scope of the present invention.

Claims

1. The utility model provides a bi-motor independent infusion system which characterized in that: the medicine storage device comprises a shell (1) with 2 independent cavities inside and a motor (8) which is arranged at the bottom of the cavities in a one-to-one correspondence mode and is provided with a threaded driving shaft (9), a medicine storage bin (2) is detachably arranged at the upper part of the cavity, a push rod (12) is arranged in the cavity in a vertically sliding mode along the axial direction of the cavity, a guide sleeve (4) is sleeved on the push rod (12) and used for guiding the push rod (12) in a vertically sliding mode, and the guide sleeve (4) is fixedly arranged in the cavity relative to the shell (1) and is located below the medicine storage bin (2);

a liquid medicine infusion port (7) is formed in the top of the medicine storage bin (2), and the liquid medicine infusion port (7) is connected with an infusion hose (10); the bottom of the medicine storage bin (2) is provided with an insertion hole, a piston (3) capable of sliding up and down along the axial direction of the medicine storage bin (2) is arranged in the medicine storage bin (2), and the piston (3) is in close fit with the medicine storage bin (2);

the push rod (12) is in threaded connection with the threaded driving shaft (9), when the motor (8) rotates forwards or reversely, the push rod (12) is pushed to slide up and down along the axial direction of the medicine storage bin (2) through the threaded connection, and when the push rod slides upwards, the push piston (3) moves upwards in the medicine storage bin (2) to output medicine liquid to the infusion hose (10) through the infusion port (7).

2. The dual motor independent infusion system of claim 1, wherein: the inner wall of the guide sleeve (4) is provided with a first guide part (5) along the axial direction, the push rod (12) is provided with a second guide part (6), and the first guide part (5) is matched with the second guide part (6) in a sliding guide manner to guide and stop rotation of the push rod (12) in a vertical sliding manner.

3. The dual motor independent infusion system of claim 2, wherein: the first guide part (5) is a groove, and the second guide part (6) is a bump; or the first guide part (5) is a convex strip, the second guide part (6) is a convex block provided with a notch, and the convex block is in sliding guide fit with the convex strip through the notch.

4. The dual motor independent infusion system of claim 1, wherein: the top of cavity is equipped with the installing port, installing port department lock has upper cover (13), and the through-hole has been seted up at the top of upper cover (13), the bottom of infusion hose (10) is inserted in upper cover (13) and is connected as to infusion mouth (7) of medicine storage bin (2) to the downwardly extending via the through-hole.

5. The dual motor independent infusion system of claim 4, wherein: the inside of cavity is equipped with annular flange (15), form the space of placing in storage medicine storehouse (2) between annular flange (15) and the top of cavity, storage medicine storehouse (2) are located on annular flange (15) and the top in storage medicine storehouse (2) by upper cover (13) are spacing.

6. The dual motor independent infusion system of claim 1, wherein: the outer wall of the threaded driving shaft (9) is provided with external threads, the bottom of the push rod (12) is provided with an inner hole along the axial direction of the push rod (12), and the inner wall of the inner hole is provided with internal threads matched with the external threads.

7. The dual motor independent infusion system of claim 1, wherein: an annular groove is formed in the piston (3) in the circumferential direction, an annular sealing ring (14) is arranged in the annular groove, and the piston (3) is in sealing fit with the annular sealing ring (14).

8. The dual motor independent infusion system of claim 1, wherein: the bottom of the piston (3) is provided with a blind hole at a position opposite to the push rod (12), and the top of the push rod (12) is provided with a pushing part capable of being inserted into the blind hole.

9. The dual motor independent infusion system of claim 4, wherein: the upper cover (13) is in threaded connection with the mounting port.