CN211068428U

CN211068428U - Peristaltic device of infusion pump

Info

Publication number: CN211068428U
Application number: CN201921145200.0U
Authority: CN
Inventors: 李涛斌; 吴张龙; 罗钰填
Original assignee: Shenzhen Comen Medical Instruments Co Ltd
Current assignee: Shenzhen Comen Medical Instruments Co Ltd
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2020-07-24
Anticipated expiration: 2029-07-19

Abstract

The utility model relates to an transfer pump wriggling device, including extrusion subassembly and carrier assembly, carrier assembly is equipped with the wriggling clamp plate of placing the transfer line, and extrusion subassembly includes a plurality of extrusion pieces of arranging along transfer line length direction, and the loading end place plane of the extrusion direction of motion perpendicular to wriggling clamp plate of a plurality of extrusion pieces is equipped with the gap between two at least adjacent extrusion pieces, is equipped with the shelves post relative with the gap on the loading end of wriggling clamp plate, and the shelves post is seted up in the both sides of transfer line and is restricted the transfer line and crooked. The utility model discloses an transfer pump wriggling device is through setting up the gap between the extrusion piece, makes and leaves certain space holding shelves post between the extrusion piece, and the shelves post both can not occupy too much space yet, can not influence the normal use of extrusion piece yet, more can play and carry out spacing effect to the transfer line to reach and avoid the transfer line crooked, improve the effect of infusion precision.

Description

Peristaltic device of infusion pump

Technical Field

The utility model belongs to the technical field of medical equipment, especially, relate to an transfer pump wriggling device.

Background

Some medical drugs have strict requirements on the dosage injected into human bodies, and infusion pumps are used as important infusion devices of ICUs, CCUs, emergency rooms, operating rooms, pediatrics and obstetrics and gynecology department and also need to strictly control the infusion precision. The peristaltic mechanism of the infusion pump is generally driven by a plurality of extrusion pieces to reciprocate up and down by eccentric wheels with corresponding equal phase angle difference in one period, so that an infusion tube in an extrusion area is extruded, and the straightness of the infusion tube in an infusion area is an important factor influencing the infusion precision.

Because the infusion tube is not effectively limited in the transverse direction, the infusion tube is easy to bend in the normal direction of the infusion direction under the action of the vertical extrusion of the extrusion piece, so that the straightness is not high, and the length of the extrusion area is lengthened, thereby influencing the infusion precision.

SUMMERY OF THE UTILITY MODEL

The utility model provides an infusion pump wriggling device for solve among the prior art transfer line and in the extrusion district crooked and influence the technical problem of infusion precision.

The utility model provides an transfer pump wriggling device, including extrusion subassembly and carrier assembly, carrier assembly is equipped with the wriggling clamp plate of placing the transfer line, extrusion subassembly includes a plurality of extrusion pieces of arranging along transfer line length direction, and is a plurality of the extrusion direction of motion perpendicular to of extrusion piece the loading end place plane of wriggling clamp plate, at least a set of adjacent two be equipped with the gap between the extrusion piece, be equipped with the shelves post relative with the gap on the loading end of wriggling clamp plate, the shelves post is seted up the both sides and the restriction of transfer line the transfer line is crooked.

Preferably, the extrusion assembly further comprises a motor, a transmission part, a bearing and eccentric wheels, one end of the transmission part is connected with the power output end of the motor, the other end of the transmission part is connected with the bearing, the eccentric wheels penetrate through the bearing and respectively drive the corresponding extrusion pieces to reciprocate, and the gap is located between the adjacent eccentric wheels. The transmission medium is reduction gears, the bearing is hexagonal square steel pivot, and the motor is through connecting flexible glue fixed connection on last wriggling seat, goes up to wriggling and installs reduction gears on the seat, and twelve eccentric wheels installation is installed on hexagonal square steel pivot according to 30 phase angle differences in proper order, and the extrusion piece is installed on the eccentric wheel, and wriggling clamp plate and baffle shell fragment are installed on the pump door. The motor passes through reduction gears, with power transmission to hexagonal square steel pivot on, hexagonal square steel drives the eccentric wheel and rotates, the eccentric wheel orders about the extrusion piece and is up-and-down reciprocating motion, thereby the extrusion piece extrudees the transfer line, and the wriggling baffle on the pump door then is as the supporting role to the transfer line, the baffle shell fragment then plays the cushioning effect.

Preferably, the extrusion assembly further comprises a shaft sleeve, and the shaft sleeve penetrates through the bearing and is clamped between the adjacent eccentric wheels to form the gap.

Preferably, the number of the shaft sleeves is two, the number of the eccentric wheels is twelve, one shaft sleeve is arranged at intervals on every four eccentric wheels, each eccentric wheel is correspondingly connected with one extrusion plate, and two stop posts are arranged in a projection of each shaft sleeve along the extrusion movement direction of the extrusion plate.

Preferably, the two stopping columns are symmetrically arranged on two sides of the infusion tube, and the stopping columns are cylindrical columns or cuboid columns.

Preferably, the pressing piece extends towards the bearing surface to form an arc-shaped protrusion, and the opening direction of the arc-shaped protrusion is perpendicular to the length direction of the infusion tube.

Preferably, the extrusion piece further comprises a connecting part connected with the eccentric wheel and an extrusion part fixedly connected with the connecting part and extruding the infusion tube, and the arc-shaped bulge is arranged at the end part of the extrusion part.

Preferably, the planes of the two side walls of the extrusion part and the plane of the outer wall of the bumping post are on the same plane.

Preferably, the infusion pump peristaltic device further comprises an upper peristaltic seat and a lower peristaltic seat, the upper peristaltic seat is fixed on the outer surface of the eccentric wheel, and the lower peristaltic seat is fixed on the outer surface of the extrusion sheet.

Preferably, the bearing assembly further comprises a baffle elastic sheet and a pump door, one end of the baffle elastic sheet is fixed on the opposite surface of the bearing surface of the peristaltic press plate, and the other end of the baffle elastic sheet is fixed on the pump door.

From the foregoing the embodiment of the utility model provides a can know, the utility model discloses an infusion pump wriggling device is through setting up the gap between the extrusion piece, makes and leaves certain space holding shelves post between the extrusion piece, and the shelves post both can not occupy too much space, can not influence the normal use of extrusion piece yet, more can play and carry out spacing effect to the transfer line to reach and avoid the transfer line crooked, improve the effect of infusion precision.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic diagram of the peristaltic device of the infusion pump of the present invention;

fig. 2 is a cross-sectional view of the peristaltic device of the infusion pump of the present invention along the direction a-a in fig. 1;

FIG. 3 is an exploded view of the peristaltic device of the infusion pump of the present invention;

FIG. 4 is a view showing the structure of the extruding sheet of the peristaltic device of the infusion pump of the present invention;

fig. 5 is a schematic view of the eccentric wheel arrangement structure of the peristaltic device of the infusion pump of the present invention;

FIG. 6 is a structural diagram of a peristaltic pressing plate of the peristaltic device of the infusion pump of the present invention;

fig. 7 is a schematic view of the infusion tube extrusion of the peristaltic paper of the infusion pump of the present invention.

Description of the main elements:

1. an extrusion assembly; 2. a load bearing assembly; 3. an upper creeping seat; 4. a lower creeping seat; 5. a gap; 6. a transfusion tube; 11. extruding the sheet; 12. a shaft sleeve; 13. a motor; 14. a speed reduction mechanism; 15. a bearing; 16. an eccentric wheel; 21. peristaltic pressing plate; 22. a shift post; 23. a baffle plate elastic sheet; 24. a pump door; 111. an arc-shaped bulge; 112. a connecting portion; 113. a pressing section; 211. and (4) carrying a surface.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-7, the utility model discloses an infusion pump peristaltic device, including extrusion subassembly 1 and carrier assembly 2, carrier assembly 2 is equipped with the wriggling clamp plate 21 of placing transfer line 6, extrusion subassembly 1 includes a plurality of extrusion pieces 11 of arranging along 6 length direction of transfer line, the plane is located to the loading end 211 of the extrusion direction perpendicular to wriggling clamp plate 21 of a plurality of extrusion pieces 11, be equipped with gap 5 between two adjacent extrusion pieces 11 of at least a set of, be equipped with the shelves post 22 relative with gap 5 on the loading end 211 of wriggling clamp plate 21, shelves post 22 sets up in the both sides of transfer line 6 and limits the transfer line 6 crooked.

Compared with the prior art, the utility model discloses an infusion pump wriggling device is through setting up gap 5 between extrusion piece 11, makes and leaves certain space holding shelves post 22 between the extrusion piece 11, and shelves post 22 neither can occupy too much space, can not influence the normal use of extrusion piece 11 yet, more can play and carry out spacing effect to transfer line 6 to reach and avoid transfer line 6 crooked, improve the effect of infusion precision.

In this embodiment, the extrusion assembly 1 further includes a motor 13, a transmission member, a bearing 15 and eccentric wheels 16, wherein one end of the transmission member is connected to the power output end of the motor 13, the other end of the transmission member is connected to the bearing 15, a plurality of eccentric wheels 16 penetrate through the bearing 15 and respectively drive the corresponding extrusion blades 11 to reciprocate, and the gap 5 is located between the adjacent eccentric wheels 16. The transmission medium is reduction gears 14, the bearing 15 is a hexagonal square steel rotating shaft, the motor 13 is fixedly connected to the upper creeping seat 3 through connecting soft rubber, the reduction gears 14 are installed on the upper creeping seat 3, twelve eccentric wheels 16 are installed on the hexagonal square steel rotating shaft in sequence according to 30-degree phase angle difference, the extrusion pieces 11 are installed on the eccentric wheels 16, and the creeping pressure plate 21 and the baffle elastic sheet 23 are installed on the pump door 24. The motor 13 is decelerated by the decelerating mechanism 14, power is transmitted to the hexagonal square steel rotating shaft, the hexagonal square steel drives the eccentric wheel 16 to rotate, the eccentric wheel 16 drives the extrusion piece 11 to reciprocate up and down, the extrusion piece 11 extrudes the infusion tube 6, the peristaltic baffle on the pump door 24 supports the infusion tube 6, and the baffle elastic sheet 23 plays a role in buffering.

In this embodiment, the compression assembly 1 further includes a sleeve 12, the sleeve 12 passing through the bearing 15 and being sandwiched between adjacent eccentrics 16 to form the gap 5. The gap 5 of holding shelves post 22 in this scheme is formed by axle sleeve 12 interval setting, also can set up the spacing groove that restriction eccentric wheel 16 removed on bearing 15, as long as can reach the structural design who produces gap 5 between the extrusion piece 11, all belong to the simple deformation and the transform of axle sleeve 12 structure, should fall into the utility model discloses a protection scope.

In the present embodiment, the shaft sleeve 12 includes two, the eccentric wheels 16 includes twelve, one shaft sleeve 12 is disposed at intervals of every four eccentric wheels 16, each eccentric wheel 16 is connected with a corresponding extrusion plate, and two stop posts 22 are disposed in a projection of each shaft sleeve 12 along the extrusion movement direction of the extrusion plate 11. The shaft sleeve 12 is evenly inserted between the extrusion pieces 11, so that the arrangement of the stop posts 22 is more even, and a better limiting effect is achieved. Of course, the utility model discloses not be limited to the restriction of above-mentioned extrusion piece 11 or axle sleeve 12 number, as long as can realize the combination of accurate extruded extrusion piece 11 and axle sleeve 12, all belong to the simple deformation and the transform of this scheme, should fall into the utility model discloses a protection scope.

In this embodiment, two stopping posts 22 are symmetrically arranged on both sides of the infusion tube 6, and the stopping posts 22 are cylindrical or rectangular columns. The stopper 22 can be integrated with the peristaltic pressing plate 21 or detachably fixed on the peristaltic pressing plate 21, so that it can be cylindrical, rectangular or other shapes.

In the present embodiment, the pressing piece 11 has an arc protrusion 111 extending toward the bearing surface 211, and the opening direction of the arc protrusion 111 is perpendicular to the longitudinal direction of the infusion tube 6. The pressing sheet 11 further comprises a connecting part 112 connected with the eccentric wheel 16 and a pressing part 113 fixedly connected with the connecting part 112 and pressing the infusion tube 6, and the arc-shaped protrusion 111 is arranged at the end part of the pressing part 113. The arc-shaped protrusion 111 is used for reducing the contact area between the extrusion pieces 11 and the infusion tube 6, because of the twelve extrusion pieces 11, the phase angle of each extrusion piece 11 is different, and the extrusion degree of the extrusion tube is inconsistent, if the contact area between the extrusion pieces 11 and the infusion tube 6 is too large, the infusion tube 6 cannot rebound in time, and the extrusion effect of the adjacent extrusion pieces 11 on the infusion tube 6 can be influenced.

In the present embodiment, the planes of the two sidewalls of the pressing portion 113 are on the same plane as the plane of the outer wall of the pillar 22. The position of the stop post 22 and the shaft sleeve 12 is equivalent to the position of occupying one extrusion sheet 11, and the original peristaltic device of the infusion pump is not required to be changed on the external shape, so that the assembly is convenient, and the aesthetic consistency of the appearance can be ensured.

In the embodiment, the peristaltic device of the infusion pump further comprises an upper peristaltic seat 3 and a lower peristaltic seat 4, wherein the upper peristaltic seat 3 is fixed on the outer surface of the eccentric wheel 16, and the lower peristaltic seat 4 is fixed on the outer surface of the extrusion sheet 11. The upper creeping seat 3 is mainly used for fixing the motor 13 and the eccentric wheel 16, and the lower creeping seat 4 is mainly used for limiting the extrusion piece 11 to move up and down in a reciprocating way only under the driving of the motor 13 without deviation.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

Above is the description to the technical scheme that the utility model provides, to technical personnel in the field, according to the utility model discloses the thought of embodiment all has the change part on concrete implementation and range of application, to sum up, this description content should not be understood as the restriction of the utility model.

Claims

1. The utility model provides an infusion pump wriggling device, a serial communication port, including extrusion subassembly and carrier assembly, carrier assembly is equipped with the wriggling clamp plate of placing the transfer line, extrusion subassembly includes a plurality of extrusion pieces of arranging along transfer line length direction, and is a plurality of the extrusion direction of motion perpendicular to of extrusion piece the loading end place plane of wriggling clamp plate, at least a set of adjacent two be equipped with the gap between the extrusion piece, be equipped with the shelves post relative with the gap on the loading end of wriggling clamp plate, the shelves post is seted up the both sides and the restriction of transfer line the transfer line is crooked.

2. The infusion pump peristaltic device according to claim 1, wherein the pressing assembly further comprises a motor, a transmission member, a bearing and eccentric wheels, one end of the transmission member is connected to a power output end of the motor, the other end of the transmission member is connected to the bearing, the plurality of eccentric wheels penetrate through the bearing and respectively drive the corresponding pressing pieces to reciprocate, and the gap is located between the adjacent eccentric wheels.

3. The infusion pump peristaltic device of claim 2, wherein the expression assembly further comprises a bushing extending through the bearing and clamped between adjacent ones of the eccentric wheels to form the gap.

4. The infusion pump peristaltic device according to claim 3, wherein the number of the shaft sleeves is two, the number of the eccentric wheels is twelve, one shaft sleeve is arranged at intervals of every four eccentric wheels, each eccentric wheel is correspondingly connected with one extrusion plate, and two stop posts are arranged in a projection of each shaft sleeve along the extrusion motion direction of the extrusion plate.

5. The infusion pump peristaltic device according to claim 2, wherein two of the blocking columns are symmetrically arranged on two sides of the infusion tube, and the blocking columns are cylindrical columns or rectangular columns.

6. The infusion pump peristaltic device according to claim 5, wherein the pressing piece extends with an arc-shaped protrusion towards the bearing surface, and the opening direction of the arc-shaped protrusion is perpendicular to the length direction of the infusion tube.

7. The infusion pump peristaltic device according to claim 6, wherein the pressing piece further comprises a connecting portion connected to the eccentric wheel and a pressing portion fixedly connected to the connecting portion and pressing the infusion tube, and the arc-shaped protrusion is disposed at an end of the pressing portion.

8. The infusion pump peristaltic device according to claim 7, wherein the two side walls of the pressing portion are positioned on the same plane as the outer wall of the stopper.

9. The infusion pump peristaltic device according to claim 2, further comprising an upper peristaltic seat and a lower peristaltic seat, wherein the upper peristaltic seat is fixed to an outer surface of the eccentric wheel, and the lower peristaltic seat is fixed to an outer surface of the extrusion sheet.

10. The infusion pump peristaltic device according to claim 1, wherein the bearing assembly further comprises a baffle plate spring and a pump door, one end of the baffle plate spring is fixed on the opposite surface of the bearing surface of the peristaltic pressure plate, and the other end of the baffle plate spring is fixed on the pump door.