CN212327103U

CN212327103U - Novel anti-blocking pipe micro pump

Info

Publication number: CN212327103U
Application number: CN202020092042.3U
Authority: CN
Inventors: 徐莉
Original assignee: Union Hospital Tongji Medical College Huazhong University of Science and Technology
Current assignee: Union Hospital Tongji Medical College Huazhong University of Science and Technology
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2021-01-12
Anticipated expiration: 2030-01-16

Abstract

The embodiment of the utility model discloses a novel anti-blocking pipe micro pump, which comprises a micro pump main body, wherein a stepping motor is arranged on the side surface of the micro pump main body, the output end of the stepping motor extends to the inside of the micro pump main body and is in transmission connection with a lead screw, the outer side of the lead screw is in threaded connection with a connecting slide block, the bottom end of the connecting slide block is provided with a speed reducing motor, the output end of the speed reducing motor is connected with a transmission rod which sequentially passes through the connecting slide block and a transmission rod chute, a cam is arranged on the transmission rod and positioned at the upper end of the micro pump main body, four groups of convex blocks are equidistantly distributed on the outer side of the cam, and the four groups of convex blocks on the outer side of the cam sequentially apply thrust to a buffer backing plate by controlling the cam to continuously move and rotate towards the injector, so that the, so that the medical liquid in the syringe is discharged little by the intermittent high pressure.

Description

Novel anti-blocking pipe micro pump

Technical Field

The embodiment of the utility model provides a relate to the medical equipment field, concretely relates to novel prevent stifled pipe micropump.

Background

A micro-pump is a novel pump force instrument, a small amount of liquid medicine is accurately, micro, uniformly and continuously pumped into the body, the operation is convenient, timing and quantitative, the concentration and the speed of the medicine can be adjusted at any time according to the state of an illness, the effective blood concentration of the medicine can be kept in the body, and the liquid consumption is small.

In the prior art, for example, a micropump of the publication number CN206867471U is mainly characterized in that a geothermal filament arranged on an injection tube in multiple sections heats liquid, thereby avoiding adverse reaction to a patient caused by too low temperature of the liquid injected into the body.

However, the problem that the feeding mode of the micro pump is constant speed still exists in the prior art, when the feeding speed is set to be small, liquid medicine can be injected in a low-pressure constant-speed state, so that pipe blockage is easily caused, a medical worker needs to establish an infusion channel at a bypass under a common condition, the pressure of the micro pump is kept by hanging a bag of physiological saline, the quantity of the input liquid is increased, and the concentration of the medicine is changed.

SUMMERY OF THE UTILITY MODEL

Therefore, the embodiment of the utility model provides a novel prevent stifled pipe micropump to the micropump of solution feeds the mode of push rod and is at the uniform velocity, easily causes stifled pipe problem under the low pressure condition.

In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:

a novel anti-blocking pipe micro pump comprises a micro pump main body, wherein a buffer mechanism is arranged at the top end of the micro pump main body, a transmission rod sliding groove is formed in the position of a transverse central bearing at the top end of the micro pump main body, and an injector frame is arranged on one side, located on the buffer mechanism, of the top end of the micro pump main body;

the side of micropump main part is equipped with step motor, and the step motor output extends to the inside and the transmission of micropump main part are connected with the lead screw, there is a link block in the outside of lead screw through threaded connection, link block's bottom is equipped with gear motor, and gear motor's output is connected with and passes in proper order link block with the transfer line of transfer line spout, and lie in on the transfer line the upper end of micropump main part is equipped with the cam, the outside equidistance distribution of cam has four group's lugs.

As an optimized scheme of the utility model, buffer gear includes that both ends extend to gag lever post on the syringe frame, and pass two sets of gag lever post slidable cushion plate, and two sets of lie in on the gag lever post cushion plate with the spring has been cup jointed respectively between the syringe frame.

As an optimized scheme of the utility model, the inside of micropump main part is equipped with the bearing frame, and the lead screw is kept away from step motor's one end with the bearing frame is connected.

As an optimized scheme of the utility model, the inside of micropump main part be equipped with the spout that the link block both ends were matchd, link block can through two sets of spouts the horizontal slip in the micropump main part.

As a preferred scheme of the utility model, the centre of a circle position of cam is equipped with the hexagonal through-hole, and the cam with the top of transfer line is passed through the hexagonal through-hole block and is connected.

As a preferred scheme of the utility model, the cushion plate is located the side of cam, and the height of cushion plate is greater than the height of cam.

The utility model discloses an embodiment has following advantage:

the utility model discloses a control cam constantly removes and rotates to the syringe direction, and thrust is applyed to the buffer backing plate in proper order to four group's lugs in the cam outside, consequently can continuously apply interrupted thrust after buffer backing plate and syringe push rod contact for liquid medicine in the syringe is by the highly compressed a bit discharge of discontinuous, compares the homokinetic and feeds low pressure exhaust mode, and the highly compressed exhaust mode of discontinuous is difficult for stifled pipe.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is an overall side sectional view of an embodiment of the present invention;

FIG. 2 is a schematic view of the connection slider according to the embodiment of the present invention;

fig. 3 is an overall cross-sectional view of an embodiment of the present invention;

fig. 4 is a plan view of the embodiment of the present invention.

In the figure:

1-a micro-pump body; 2-a step motor; 3-a screw rod; 4-bearing seats; 5-connecting the sliding block; 6-a speed reduction motor; 7-a transmission rod; 8-cam; 9-a buffer mechanism; 10-a drive rod chute; 11-syringe holder;

901-a limiting rod; 902-a spring; 903-cushion pad.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in figure 1, the utility model provides a novel anti-blocking micro pump, which comprises a micro pump body 1, a buffer mechanism 9 is arranged on the top end of the micro pump body 1, a transmission rod chute 10 is arranged at the transverse central bearing position of the top end of the micro pump body 1, an injector frame 11 is arranged at one side of the buffer mechanism 9 on the top end of the micro pump body 1, the buffer mechanism 9 comprises a limit rod 901 with two ends extending to the injector frame 11 and a buffer cushion plate 903 which can slide through the two sets of limit rods 901, springs 902 are respectively sleeved between the buffer cushion plate 903 and the injector frame 11 on the two sets of limit rods 901, when in use, an injector which absorbs liquid medicine is clamped into the injector frame 11, one end of a push rod of the injector is arranged between the two sets of limit rods 901, thrust is applied to the injector push rod by controlling the buffer cushion plate 903, the injector push rod continuously extends into the needle tube, so that the liquid medicine in the needle tube is discharged, the spring 902 on the limiting rod 901 enables the buffer backing plate 903 to be pushed to a position far away from the push rod of the syringe, and the phenomenon that the push rod collides with the buffer backing plate 903 to cause a large amount of liquid medicine to flow out in the mounting process of the syringe is prevented.

As shown in fig. 1 and 3, a stepping motor 2 is disposed on a side surface of a micro pump body 1, an output end of the stepping motor 2 extends into the micro pump body 1 and is connected with a lead screw 3 in a transmission manner, a bearing seat 4 is disposed inside the micro pump body 1, one end of the lead screw 3, which is far away from the stepping motor 2, is connected with the bearing seat 4, a connection slider 5 is connected with the outer side of the lead screw 3 through a thread, a sliding groove matched with two ends of the connection slider 5 is disposed inside the micro pump body 1, the connection slider 5 can slide left and right inside the micro pump body 1 through two groups of sliding grooves, the connection slider 5 which can slide left and right is driven by the lead screw 3, in the using process, a speed setting which needs to be fed is transmitted to a processor, the rotation speed of the stepping motor 2 is controlled by the processor, and the sliding speed of the connection slider 5 is further controlled, in addition, two ends of the lead screw 3, therefore, the screw rod 3 is not easy to incline in the rotating process.

As shown in fig. 2, a speed reduction motor 6 is arranged at the bottom end of the connecting slider 5, an output end of the speed reduction motor 6 is connected with a transmission rod 7 which sequentially penetrates through the connecting slider 5 and the transmission rod chute 10, a cam 8 is arranged at the upper end of the micro pump main body 1 on the transmission rod 7, a hexagonal through hole is arranged at the circle center position of the cam 8, the cam 8 is connected with the top end of the transmission rod 7 in a clamping manner through the hexagonal through hole, a bearing matched with the transmission rod 7 is arranged in the connecting slider 5, and when the transmission rod 7 driven by the speed reduction motor 6 rotates at a constant speed, the cam 8 can be driven to rotate at a constant speed at the same time.

As shown in fig. 1 and 4, four sets of protrusions are equidistantly distributed on the outer side of the cam 8, a cushion plate 903 is positioned on the side of the cam 8, and the height of the cushion plate 903 is larger than that of the cam 8, when the stepping motor 2 drives the connecting slide 5 to slide to the right, the connecting slide block 5 drives the cam 8 to move rightwards through the transmission rod 7, at the moment, the speed reducing motor 6 is switched on, so that the cam 8 keeps rotating at a constant speed in the process of moving towards the right side until the cam 8 is contacted with the buffer backing plate 903, and with the constant movement and rotation of the cam 8, four groups of convex blocks at the outer side of the cam 8 apply thrust to the buffer backing plate 903 in turn, therefore, the buffer pad 903 continuously applies intermittent thrust to the syringe plunger, so that the medical fluid in the syringe is discharged little by intermittent high pressure, and the intermittent high pressure discharge method is less likely to be clogged than the uniform-speed low pressure discharge method.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The novel anti-blocking pipe micropump is characterized by comprising a micropump main body (1), wherein a buffering mechanism (9) is arranged at the top end of the micropump main body (1), a transmission rod sliding groove (10) is formed in the position of a transverse central bearing at the top end of the micropump main body (1), and an injector frame (11) is arranged on one side, located on the buffering mechanism (9), of the top end of the micropump main body (1);

the side of micro-pump main part (1) is equipped with step motor (2), and step motor (2) output extends to the inside and the transmission of micro-pump main part (1) are connected with lead screw (3), there is link block (5) in the outside of lead screw (3) through threaded connection, the bottom of link block (5) is equipped with gear motor (6), and the output of gear motor (6) is connected with and passes in proper order link block (5) with transfer line (7) of transfer line spout (10), and lie in on transfer line (7) the upper end of micro-pump main part (1) is equipped with cam (8), the outside equidistance distribution of cam (8) has four groups of lugs.

2. The novel anti-blocking pipe micropump according to claim 1, wherein the buffer mechanism (9) comprises a limiting rod (901) with two ends extending to the syringe holder (11), and a buffer backing plate (903) which can slide through the two sets of limiting rods (901), and springs (902) are respectively sleeved on the two sets of limiting rods (901) between the buffer backing plate (903) and the syringe holder (11).

3. The novel anti-blocking pipe micropump according to claim 1, wherein a bearing seat (4) is arranged inside the micropump body (1), and one end of the screw rod (3) far away from the stepping motor (2) is connected with the bearing seat (4).

4. The novel anti-blocking pipe micropump according to claim 1, wherein sliding grooves matched with the two ends of the connecting sliding block (5) are formed in the micropump main body (1), and the connecting sliding block (5) can slide left and right in the micropump main body (1) through two groups of sliding grooves.

5. The novel anti-blocking pipe micropump according to claim 1, wherein a hexagonal through hole is formed in the center of the cam (8), and the cam (8) is connected with the top end of the transmission rod (7) in a clamping manner through the hexagonal through hole.

6. The novel pipe blockage prevention micropump according to claim 2, wherein the cushion plate (903) is positioned at the side edge of the cam (8), and the height of the cushion plate (903) is greater than the height of the cam (8).