CN219481101U - Peristaltic mechanism for infusion pump - Google Patents

Abstract

The peristaltic mechanism for the infusion pump comprises a driving piece, a gear set, a plurality of peristaltic sheets and a plurality of eccentric wheels, wherein the driving piece is connected with the gear set to drive the gear set, the plurality of eccentric wheels are connected with the gear set through a main shaft, the plurality of peristaltic sheets are used for extruding an infusion tube and are matched with the plurality of eccentric wheels, the plurality of eccentric wheels rotate around the main shaft under the driving of the driving piece, and two adjacent eccentric wheels in the plurality of eccentric wheels are integrally arranged, so that the number of parts is effectively reduced, the number of the eccentric wheels to be assembled is halved, the size of the peristaltic mechanism is reduced, the assembling speed is improved, and the probability of assembly errors is reduced.

Description

Peristaltic mechanism for infusion pump

Technical Field

The utility model belongs to the technical field of medical equipment, and particularly relates to a peristaltic mechanism for an infusion pump.

Background

Infusion pumps are devices that control the rate of infusion by acting on an infusion line, and are commonly used in situations where strict control of the amount and dosage of infusion is required. The infusion pump generally comprises a main body and a pump door pivoted with the main body, and when the pump door is closed, a pump sheet on the main body is matched with a pressure pipe block of the pump door to squeeze the infusion pipe so as to realize liquid delivery. In the main structure of the infusion pump, the peristaltic mechanism of the infusion pump is used as an important power mechanism of the infusion pump, the power size, the size of the volume and the difficulty of assembly are generally required to be comprehensively considered, but in the prior art, most peristaltic mechanisms of the infusion pump have the problems of large volume, difficult assembly and the like, the production efficiency and the later maintenance are seriously influenced, and the production and the use of the infusion pump are not facilitated.

In summary, the peristaltic mechanism for the infusion pump has the technical problems of large volume, difficult assembly and the like.

Disclosure of Invention

The peristaltic mechanism for the infusion pump is capable of reducing the size of the peristaltic mechanism for the infusion pump and reducing the assembly difficulty of the peristaltic mechanism for the infusion pump.

The peristaltic mechanism for the infusion pump comprises a driving piece, a gear set, a plurality of peristaltic sheets and a plurality of eccentric wheels; the driving piece is connected with the gear set to drive the gear set; the eccentric wheels are connected with the gear set through a main shaft; the peristaltic sheets are used for extruding the infusion tube and are matched with the eccentric wheels, and the eccentric wheels are driven by the driving piece to rotate around the main shaft; two adjacent eccentric wheels in the eccentric wheels are integrally arranged.

Further, the driving member is a stepping motor.

Further, the number of the plurality of creeping pieces is twelve.

Further, the number of the eccentric wheels is twelve.

Further, the angular deviation of two adjacent eccentric wheels in the plurality of eccentric wheels is an acute angle.

Further, the acute angle includes 30 °.

Further, the peristaltic mechanism for the infusion pump further comprises a test strip and a signal test plate; the detection piece is arranged on the opposite side of the gear set and connected with the main shaft, the signal detection plate is arranged on one side of the detection piece, and the detection piece is matched with the signal detection plate for use.

Further, two adjacent eccentric wheels in the plurality of eccentric wheels are integrally arranged in an integral injection molding mode.

Further, the matching parts of the plurality of creeping pieces and the plurality of eccentric wheels are U-shaped.

Further, after the peristaltic mechanism is installed with the infusion pump, extrusion blocks are arranged at positions of the pump door of the infusion pump corresponding to the plurality of peristaltic sheets; when the infusion tube is installed and the pump door of the infusion pump is closed, the plurality of peristaltic sheets reciprocate under the periodic rotation of the plurality of eccentric wheels to squeeze the medium in the infusion to flow.

Compared with the prior art, the utility model has the beneficial effects that:

the peristaltic mechanism for the infusion pump comprises a driving piece, a gear set, a plurality of peristaltic sheets and a plurality of eccentric wheels, wherein the driving piece is connected with the gear set to drive the gear set, the plurality of eccentric wheels are connected with the gear set through a main shaft, the peristaltic sheets are used for extruding an infusion tube and are matched with the plurality of eccentric wheels, the plurality of eccentric wheels rotate around the main shaft under the driving of the driving piece, and two adjacent eccentric wheels in the plurality of eccentric wheels are integrally arranged, so that the number of parts is effectively reduced, the number of the eccentric wheels to be assembled is halved, the volume of the peristaltic mechanism is reduced, the assembling speed is improved, and the probability of assembling errors is reduced.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic diagram of a peristaltic mechanism for an infusion pump;

FIG. 2 is a schematic structural view of an eccentric unit;

FIG. 3 is a schematic structural view of an eccentric assembly;

FIG. 4 is a schematic view of the structure of a single peristaltic sheet;

fig. 5 is a schematic view of the peristaltic mechanism operating and pump gate press for an infusion pump.

In the drawings, each reference numeral denotes:

1. a driving member; 2. a gear set; 3. a set of peristaltic sheets; 4. a detection sheet; 5. a single peristaltic sheet; 6. an eccentric wheel; 7. a detection plate; 8. a main shaft; 9. extruding the blocks.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar methods or methods having like or similar functions throughout. The embodiments described below are exemplary and intended to illustrate the present utility model and should not be construed as limiting the utility model, and all other embodiments, based on the embodiments of the present utility model, which may be obtained by persons of ordinary skill in the art without inventive effort, are within the scope of the present utility model.

Referring to fig. 1-5, an embodiment of the present utility model provides a peristaltic mechanism for an infusion pump, which includes a driving member 1, a gear set 2, a plurality of peristaltic sheets, and a plurality of eccentric wheels 6; the driving piece 1 is connected with the gear set 2 to drive the gear set 2; a plurality of eccentric wheels 6 are connected with the gear set 2 through a main shaft 8; the peristaltic sheets are used for extruding the infusion tube and are matched with the eccentric wheels 6, and the eccentric wheels 6 rotate around the main shaft 8 under the driving of the driving piece 1; two adjacent eccentric wheels 6 in the plurality of eccentric wheels 6 are integrally arranged. Wherein the driving member 1 may be a stepping motor. The number of the plurality of creeping pieces can be twelve. The number of eccentric wheels 6 may be twelve. The angular deviation of two adjacent eccentric wheels 6 in the plurality of eccentric wheels 6 is an acute angle. The acute angle preferably comprises 30 °.

In this embodiment, because the peristaltic mechanism for the infusion pump includes driving piece 1, gear train 2, a plurality of peristaltic sheets and a plurality of eccentric wheels 6, driving piece 1 is connected with gear train 2 in order to drive gear train 2, a plurality of eccentric wheels 6 are connected with gear train 2 through main shaft 8, a plurality of peristaltic sheets are used for extruding the transfer line and cooperate with a plurality of eccentric wheels 6, make a plurality of eccentric wheels 6 rotate around main shaft 8 under the drive of driving piece 1, adjacent two eccentric wheels 6 an organic whole sets up in a plurality of eccentric wheels 6, thereby effectively reduced the number of part, make the quantity of eccentric wheels 6 that need assemble halve, reduced the volume of peristaltic mechanism, improved the speed of assembly, reduced the probability of assembly error.

It should be noted that, the number of the eccentric wheels 6 and the number of the peristaltic sheets may be that the number of the eccentric wheels 6 and the number of the peristaltic sheets are all multiple, and the specific number may be selected according to actual peristaltic requirements. For example, the number of eccentric wheels 6 may be twelve, and the number of creeping pieces may be twelve. In addition, it should be noted that, because two adjacent eccentric wheels 6 in the plurality of eccentric wheels 6 are integrally arranged, the number of parts is reduced, the number of the eccentric wheels 6 to be assembled is halved, the volume of the peristaltic mechanism is reduced, the assembling speed is improved, and the probability of assembling errors is reduced. Taking twelve eccentric wheels 6 as an example, since every two adjacent eccentric wheels 6 in the twelve eccentric wheels 6 are integrally arranged, six eccentric wheels 6 are separated from the number of the separated eccentric wheels 6, so that the number of the eccentric wheels 6 to be assembled is halved, the size of the peristaltic mechanism is reduced, the assembling speed is improved, and the probability of assembly errors is reduced. It should also be noted that the plurality of peristaltic sheets 3 form a peristaltic sheet set 3, and the individual peristaltic sheets 5 may be configured as a spoon.

In some preferred embodiments, two adjacent eccentric wheels 6 of the plurality of eccentric wheels 6 are integrally provided in a manner of integral injection molding. Because integrative injection moulding can be according to the mould injection moulding, batch production, and the product difference is little, and production efficiency is high, has consequently promoted the integrative efficiency that sets up of eccentric wheel 6, reduces the error between the eccentric wheel 6.

In some preferred embodiments, the peristaltic mechanism for an infusion pump further comprises a test strip 4 and a signal test plate 7; the detection piece 4 is arranged on the opposite side of the gear set 2 and is connected with the main shaft 8, the signal detection plate 7 is arranged on one side of the detection piece 4, and the detection piece 4 is matched with the signal detection plate 7 for use. In this embodiment, since the detecting plate 4 is disposed on the opposite side of the gear set 2 and connected to the spindle 8, the signal detecting plate 7 is disposed on one side of the detecting plate 4, and the detecting plate 4 is used in cooperation with the signal detecting plate 7, so that the peristaltic mechanism of the infusion pump can be precisely controlled. Wherein the opposite side of the gear set 2 refers to the side located opposite the gear set 2, for example, if the gear set 2 is disposed on the left side of the driving member 1 with the driving member 1 as a reference frame, the detecting piece 4 is disposed on the right side of the driving member 1. It should be noted that, two adjacent eccentric wheels 6 are one eccentric wheel unit, and a plurality of eccentric wheel units are arranged on the main shaft 8, and can form an eccentric wheel assembly with the detecting pieces 4 and the gear sets 2 at two sides.

In some modified embodiments, the matching position of the plurality of creeping pieces and the plurality of eccentric wheels 6 is set to be U-shaped. In the embodiment, as the matching parts of the plurality of creeping pieces and the plurality of eccentric wheels 6 are provided with the U-shaped openings, the assembling speed is effectively improved, the production efficiency is improved, and meanwhile, the follow-up machine is convenient to maintain.

In some specific embodiments, after the peristaltic mechanism is installed with the infusion pump, the position of the pump door of the infusion pump corresponding to the plurality of peristaltic sheets is provided with a squeezing block 9; when the infusion tube is installed and the pump door of the infusion pump is closed, the peristaltic sheets reciprocate under the periodic rotation of the eccentric wheels 6 to squeeze the medium in the infusion to flow.

Finally, it should be noted that, the peristaltic mechanism for an infusion pump provided in the above embodiment, because the peristaltic mechanism for an infusion pump includes a driving member 1, a gear set 2, a plurality of peristaltic sheets and a plurality of eccentric wheels 6, the driving member 1 is connected with the gear set 2 to drive the gear set 2, the plurality of eccentric wheels 6 are connected with the gear set 2 through a main shaft 8, the plurality of peristaltic sheets are used for extruding an infusion tube and are matched with the plurality of eccentric wheels 6, the plurality of eccentric wheels 6 rotate around the main shaft 8 under the driving of the driving member 1, and two adjacent eccentric wheels 6 in the plurality of eccentric wheels 6 are integrally arranged, thereby effectively reducing the number of parts, halving the number of the eccentric wheels 6 to be assembled, reducing the volume of the peristaltic mechanism, improving the assembling speed and reducing the probability of assembly errors.

The foregoing is a description of the embodiments of the present utility model, and is not to be construed as limiting the utility model, since modifications in the detailed description and the application scope will become apparent to those skilled in the art upon consideration of the teaching of the embodiments of the present utility model.

Claims (10)

1. The peristaltic mechanism for the infusion pump is characterized by comprising a driving piece, a gear set, a plurality of peristaltic sheets and a plurality of eccentric wheels; the driving piece is connected with the gear set to drive the gear set; the eccentric wheels are connected with the gear set through a main shaft; the peristaltic sheets are used for extruding the infusion tube and are matched with the eccentric wheels, and the eccentric wheels rotate around the main shaft under the driving of the driving piece; two adjacent eccentric wheels in the plurality of eccentric wheels are integrally arranged.

2. The peristaltic mechanism for an infusion pump of claim 1 wherein the drive member is a stepper motor.

3. The peristaltic mechanism for an infusion pump of claim 1 wherein the number of peristaltic sheets is twelve.

4. A peristaltic mechanism for an infusion pump according to claim 3, wherein the number of eccentrics is twelve.

5. The peristaltic mechanism for an infusion pump of claim 1 wherein the angular offset of adjacent ones of the plurality of eccentric wheels is acute.

6. The peristaltic mechanism for an infusion pump of claim 5 wherein the acute angle comprises 30 °.

7. The peristaltic mechanism for an infusion pump of any one of claims 1-6 further comprising a test strip and a signal test plate; the detection piece set up in the opposite side of gear train and with the main shaft is connected, the signal detection board set up in one side of detection piece, the detection piece with the supporting use of signal detection board.

8. Peristaltic mechanism for an infusion pump according to any one of claims 1-6, characterized in that two adjacent eccentric wheels of the number are integrally provided in one piece by injection moulding.

9. The peristaltic mechanism for an infusion pump of any one of claims 1-6 wherein the mating of the plurality of peristaltic tabs with the plurality of eccentrics is configured in a "U" shape.

10. The peristaltic mechanism for an infusion pump of any one of claims 1-6 wherein, after the peristaltic mechanism is installed with the infusion pump, an extrusion block is provided at a position of a pump gate of the infusion pump corresponding to the plurality of peristaltic sheets; when the infusion tube is installed and the pump door of the infusion pump is closed, the peristaltic sheets reciprocate under the periodic rotation of the eccentric wheels to squeeze the medium in the infusion to flow.