CN108904924B

CN108904924B - Flow rate controller for medical infusion tube

Info

Publication number: CN108904924B
Application number: CN201810389543.5A
Authority: CN
Inventors: 朱晓玲; 杨晔琴; 蔡福满; 吴永琴; 高晨晨; 陈颖颖
Original assignee: Wenzhou Medical University
Current assignee: Wenzhou Medical University
Priority date: 2018-04-27
Filing date: 2018-04-27
Publication date: 2020-10-23
Anticipated expiration: 2038-04-27
Also published as: CN108904924A

Abstract

The invention discloses a flow rate controller of a medical infusion tube, which comprises a base body, wherein a through hole through which the infusion tube passes is arranged on the base body, an installation cavity communicated with the side wall of the through hole is arranged in the base body, a tightening block which slides in a reciprocating manner towards the direction of the through hole is arranged in the installation cavity, racks arranged along the sliding direction of the tightening block are fixedly arranged on the side wall of the tightening block, a gear meshed with the racks is rotatably connected in the installation cavity, a through groove is formed in the installation cavity and corresponds to one side wall of each rack, the outer peripheral wall of the gear protrudes out of the through groove and limits the gear to be separated from the installation cavity, a kidney-shaped hole for realizing the reciprocating sliding of the gear between the through groove and the rack is formed in the side wall of the installation cavity. The invention has the following advantages and effects: the invention can realize the control of the infusion flow rate by simultaneous operation of pressing and rotating, thereby reducing the misoperation of children on the infusion flow rate and reducing the potential safety hazard.

Description

Flow rate controller for medical infusion tube

Technical Field

The invention relates to a medical apparatus, in particular to a flow rate controller of a medical infusion tube.

Background

One of the commonly used clinical treatments is intravenous infusion, which is a method of infusing a large amount of electrolytes, sterile liquid and drugs into the body from veins according to the principles of atmospheric pressure and hydrostatic pressure, and is an essential treatment method particularly in emergency treatment and trauma situations. The common transfusion device has simple structure and low price, is widely applied clinically, mainly comprises an air inlet pipe, a transfusion pipe, a Murphy drip cup, a flow rate controller and a needle head, and performs transfusion to a patient body by the pressure provided by the liquid level difference.

Chinese patent with publication number CN206652054U discloses an infusion apparatus, which comprises a transparent infusion tube, a bottle stopper puncture outfit disposed on the infusion tube in sequence along the infusion direction, a ampulla, a filter, a flow rate controller and a vein puncture needle, and an alarm device sleeved on the infusion tube, wherein the alarm device comprises a housing and an alarm circuit disposed in the inner cavity of the housing, the alarm circuit comprises a power supply, an optical coupler OC1, a control chip U1 and a sound alarm, a first pin of the optical coupler OC1 is connected with the positive pole of the power supply, a second pin is connected with the input end of the control chip U1, a third pin and a fourth pin are respectively grounded, the sound alarm is connected to the output end of the control chip U1, and the alarm device further comprises a power control switch K1 disposed on the housing.

The flow rate controller in the patent realizes the control of the liquid transfusion speed by pushing the rotating wheel on the flow rate controller by a hand and changing the depth of the rotating wheel for pressing and holding the transfusion tube. Because some special medicines need to strictly control the flow rate during infusion, but some children are in infusion, the carelessness of parents and the curious psychology of the children lead many children to touch the flow rate controller in the infusion process; the children easily touch the rotating wheel in the process of touching the flow rate controller, so that the transfusion speed of liquid is changed, and certain potential safety hazards exist.

Disclosure of Invention

The invention aims to provide a flow rate controller of a medical infusion tube, which can reduce potential safety hazards.

The technical purpose of the invention is realized by the following technical scheme: the utility model provides a flow rate controller of medical transfer line, includes the base member, be equipped with the through-hole that the feed pipe wore to establish on the base member, be equipped with the installation cavity of intercommunication through-hole lateral wall in the base member, place the tight piece of supporting towards the reciprocal slip of through-hole direction in the installation cavity, the lateral wall that supports the tight piece sets firmly along the rack that supports tight piece glide direction and arrange, the installation cavity internal rotation is connected with the gear of meshing rack, logical groove has been seted up corresponding to a lateral wall of rack in the installation cavity, the periphery wall protrusion of gear just restricts the gear and breaks away from the installation cavity in leading to the groove, be equipped with on the lateral wall of installation cavity and supply the gear to realize the waist shape hole of reciprocal slip between leading to groove and rack between the two, installation cavity and support and be.

By adopting the technical scheme, the elastic piece driving gear slides in the waist-shaped hole towards the direction of the through groove, so that a part of the peripheral wall of the gear can protrude out of the through groove on the basis of ensuring that the whole gear cannot be separated from the mounting cavity; the tooth-shaped surface of the gear protruding out of the through groove can be clamped on the port of the through groove, so that the rotation of the gear is limited. When the flow rate of infusion is to be adjusted, the position of the gear protruding out of the through groove is pressed by a hand, so that the gear is firstly separated from the port of the through groove and then slides in the waist-shaped hole, and the elastic part is compressed by the abutting block; through the mode of pressing the rotating gear, the meshing between the gear and the rack can drive the abutting block to slide, so that the infusion speed is adjusted. Through increasing the mode of operation of pressing, make children touch the gear and not know under the prerequisite of pressing the operation step, can not realize rotating the gear to the potential safety hazard that has reduced the existence.

Further setting the following steps: when the elastic piece is in an initial state, a locking block which is embedded in the tooth surface of the gear and used for limiting the rotation of the gear is fixedly arranged on one side wall of the mounting cavity corresponding to the rack.

Through adopting above-mentioned technical scheme, when the gear moves towards logical groove direction, the profile of the tooth of entering gear is established to the better card of locking block ability through the setting, realizes more stable spacing fixed to the gear.

Further setting the following steps: the material of elastic component is rubber materials, the fixed setting of inner wall of elastic component and installation cavity, the inside of elastic component is equipped with the deformation chamber, the deformation chamber runs through the elastic component along the direction of sliding of the piece that supports.

Through adopting above-mentioned technical scheme, rubber materials itself has good elastic deformation space, can guarantee through this kind of setting to support the stability that tight piece slided to the deformation space of further increase elastic component through the setting in deformation chamber, make the hand just can make the elastic component take place deformation of bigger degree through applying littleer effort, make the operation more convenient, comfortable.

Further setting the following steps: and a low-friction material layer is fixedly arranged on one surface of the elastic piece abutting against the abutting block.

Through adopting above-mentioned technical scheme, the setting up of low friction material layer has reduced the frictional resistance of supporting tight piece when sliding for the sliding of supporting tight piece is more smooth and easy.

Further setting the following steps: the utility model discloses a transfusion device, including base member, limiting part, the base member outer wall is equipped with the intercommunication through-hole and makes the transfer line can radially install the passageway of advancing the through-hole, a lateral wall of passageway outwards extends limiting part, be formed with between the inner wall of limiting part and through-hole and can break away from the clearance of going out the through-hole after the transfer line takes place to deform.

By adopting the technical scheme, the medical infusion tube is a disposable product, so that the disassembly and separation between the base body and the infusion tube can be conveniently realized through the arrangement of the channel, the base body is repeatedly utilized, and the environment is protected; after the infusion tube is deformed by a certain amount under the action of the limiting part, the infusion tube enters the through hole through the gap, so that the base body is conveniently installed on the infusion tube.

Further setting the following steps: the limiting part is arranged to protrude outwards towards one side of the gap to form an arc-shaped surface.

Through adopting above-mentioned technical scheme, the setting of arcwall face can prevent that the transfer line from when passing through the clearance, to the damage that the transfer line caused.

Further setting the following steps: and a gear steering identification mark is fixedly arranged at the position, close to the through groove, of the outer wall of the base body, and a steering arrow is fixedly arranged on the end face of the gear.

Through adopting above-mentioned technical scheme, the setting up of gear steering identification makes the operator can make the effect that reaches behind the more clear rotating gear direction to combine to turn to the arrow point and can play the misleading effect for children, reduce children and press the probability of operation at the process of trying to the gear, thereby promote children's failure probability when trying.

In conclusion, the invention has the following beneficial effects: the invention can realize the control of the infusion flow rate by simultaneous operation of pressing and rotating, thereby reducing the misoperation of children on the infusion flow rate and reducing the potential safety hazard.

Drawings

FIG. 1 is a perspective view of an embodiment;

FIG. 2 is a sectional view of the embodiment;

fig. 3 is a partial sectional view of the embodiment.

In the figure: 1. a substrate; 2. a through hole; 3. a mounting cavity; 4. a propping block; 5. a rack; 6. a gear; 7. a through groove; 8. a waist-shaped hole; 9. an elastic member; 10. a locking block; 11. a deformation chamber; 12. a low friction material layer; 13. a channel; 14. a limiting part; 15. a gap; 16. an arc-shaped surface; 17. identifying a gear steering identification; 18. a steering arrow; 19. a main shaft.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, a flow rate controller for a medical infusion tube comprises a base 1, wherein a through hole 2 penetrating through the base 1 along a vertical direction is formed in the base 1, a channel 13 communicating with the side wall of the through hole 2 is formed in the outer side wall of the base 1, and the channel 13 penetrates through the upper surface and the lower surface of the base 1 respectively; the width of the channel 13 is larger than the outer diameter of the infusion tube, a limiting part 14 which extends outwards and gradually inclines towards the central position of the through hole 2 is arranged on one side wall of the channel 13, a gap 15 is formed between the limiting part 14 and the inner wall of the through hole 2, and the diameter of the gap 15 is smaller than the outer diameter of the infusion tube and larger than the wall thickness of the infusion tube. The limiting part 14 and the base 1 are integrally arranged, and one surface facing the gap 15 is outwards protruded to form the arc surface 16.

Referring to fig. 1, 2 and 3, a mounting cavity 3 in a strip shape is formed in a base 1, one end of the mounting cavity 3 is communicated with the side wall of the through hole 2, and a pressing block 4 is placed in the mounting cavity 3; an elastic part 9 of one layer is arranged between the bottom of the abutting block 4 and the installation cavity 3, the elastic part 9 is made of rubber materials, a deformation cavity 11 is formed in the elastic part 9, and the deformation cavity 11 penetrates through the elastic part 9 along the length direction of the installation cavity 3. The elastic part 9 and the installation cavity 3 are fixed through a glue bonding mode, a low-friction material layer 12 is fixedly bonded on one surface of the elastic part 9 abutting against the abutting block 4, and the low-friction material layer 12 can be made of polytetrafluoroethylene materials or metal materials.

A rack 5 is fixedly arranged on one side wall of the abutting block 4, which is back to the low-friction material layer 12, the racks 5 are arranged in the length direction of the installation cavity 3, and the material of the racks 5 is preferably plastic; the gear 6 is rotatably connected above the rack 5 in the installation cavity 3 through a main shaft 19, and the gear 6 is fixedly connected with the main shaft 19. A waist-shaped hole 8 for placing the main shaft is formed in one side wall of the mounting cavity 3 corresponding to the end face of the main shaft 19, and the length direction of the waist-shaped hole 8 is vertically arranged; the top of the mounting cavity 3 is provided with a through groove 7 penetrating through the outer top of the base body 1, and the through groove 7 is positioned right above the waist-shaped hole 8.

When the gear 6 moves towards the through groove 7, a part of the gear 6 can protrude out of the through groove 7, that is, the length of the through groove 7 is smaller than the diameter of the gear 6, so that the gear 6 cannot be pulled out of the through groove 7 as a whole, and the material of the gear 6 is preferably plastic. The locking block 10 is fixedly arranged at the top of the mounting cavity 3 close to the port of the through groove 7, and when the elastic piece 9 is in an initial state, the tooth-shaped surface of the gear 6 protrudes out of the through groove 7 and the locking block 10 is clamped on the tooth-shaped surface of the gear 6 and used for limiting the rotation of the gear 6. A gear steering identification mark 17 is arranged at the position, close to the through groove 7, of the outer top of the base body 1, the gear steering identification mark 17 comprises a first groove in a shape of a Chinese character 'Kai' and a second groove in a shape of a Chinese character 'Kai', and the first groove and the second groove are respectively positioned on two opposite sides of the through groove 7; the end face of the gear 6 is provided with a turning arrow 18.

The operation process is as follows: the infusion tube penetrates into the through hole 2 through two ends of the through hole 2 or enters the through hole 2 through the channel 13 and the gap 15, and when the infusion tube passes through the gap 15, the infusion tube is extruded by the limiting part 14 and the inner wall of the through hole 2 and enters the through hole 2 in a deformation mode; when the elastic piece 9 is in an initial state, the driving gear 6 protrudes out of the through groove 7 and the locking block 10 is clamped into the tooth-shaped surface of the gear 6. The hand exerts a pressing force on the gear 6 protruding out of the through groove 7, so that the locking block 10 is separated from the tooth-shaped surface of the gear 6 and the elastic piece 9 is compressed and deformed; the pressing force is continuously applied to push the gear 6 to rotate, and the abutting block 4 is driven to slide towards the direction of the through hole 2 in a meshing mode between the gear 6 and the rack 5, so that the pressing adjustment of the infusion tube is realized.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. A flow rate controller of a medical infusion tube comprises a base body (1), and is characterized in that: be equipped with through-hole (2) that the confession liquid delivery pipe wore to establish on base member (1), be equipped with installation cavity (3) of intercommunication through-hole (2) lateral wall in base member (1), place in installation cavity (3) and advance tight piece (4) of propping towards through-hole (2) direction reciprocal slip, the lateral wall that props tight piece (4) sets firmly rack (5) of following the tight piece (4) direction of sliding and arranging, installation cavity (3) internal rotation is connected with gear (6) of meshing rack (5), installation cavity (3) have been seted up logical groove (7) corresponding to a lateral wall of rack (5), the periphery wall protrusion of gear (6) is in leading to groove (7) and restriction gear (6) break away from installation cavity (3), be equipped with on the lateral wall of installation cavity (3) and supply gear (6) to realize reciprocal waist (8) of sliding between leading to groove (7) and rack (5), installation cavity (3) and support and be equipped with elastic component (9) that drive rack (5) moved towards logical groove (7) direction between piece (4), work as when elastic component (9) are in initial condition, installation cavity (3) set firmly the profile of tooth face that the inlay was established into gear (6) and are used for restricting gear (6) pivoted locking piece (10) corresponding to a lateral wall of rack (5).

2. A flow rate controller for a medical fluid line as set forth in claim 1, wherein: the material of elastic component (9) is rubber materials, elastic component (9) and the fixed setting of inner wall of installation cavity (3), the inside of elastic component (9) is equipped with deformation chamber (11), deformation chamber (11) run through elastic component (9) along the slip direction of holding up piece (4).

3. A flow rate controller for a medical fluid line as set forth in claim 2, wherein: and a low-friction material layer (12) is fixedly arranged on one surface of the elastic piece (9) abutting against the abutting block (4).

4. A flow rate controller for a medical fluid line as set forth in claim 1, wherein: the infusion tube is characterized in that the outer wall of the base body (1) is provided with a channel (13) which is communicated with the through hole (2) and enables the infusion tube to be radially installed into the through hole (2), a limiting part (14) extends outwards from one side wall of the channel (13), and a gap (15) which can be separated from the through hole (2) after the infusion tube deforms is formed between the limiting part (14) and the inner wall of the through hole (2).

5. The flow rate controller for a medical fluid line according to claim 4, wherein: one surface of the limiting part (14) facing the gap (15) is outwards protruded to form an arc surface (16).

6. A flow rate controller for a medical fluid line as set forth in claim 1, wherein: a gear steering identification mark (17) is fixedly arranged at a position, close to the through groove (7), of the outer wall of the base body (1), and a steering arrow (18) is fixedly arranged on the end face of the gear (6).