Liquid food conveying device

Abstract

The utility model provides a liquid food conveying device. The liquid food conveying device comprises a barrel, a rotating rod component, an upper end cover and a chock plug. The upper end of the barrel is open; the lower end of the cylinder is closed through a lower end plate; the cross section of the periphery of the cylinder body is circular; the cross section of the inner circumference of the cylinder body is elliptical; a circular through hole is formed in the center of the lower end plate; an external thread is formed on the outer peripheral surface of the upper end of the cylinder body; the rotating rod component comprises a hand wheel and a rod body; the lower end of the rod body is fixed in the center of the hand wheel; an external thread is formed in the middle of the rod body to form a screw rod; the chock plug comprises a hard plastic inner core and a silica gel layer which is fixedly arranged around the periphery of the inner core; the chock plug can be installed in the barrel in a sliding mode, and a silica gel layer on the periphery of the chock plug is in close contact with the inner periphery of the barrel. An inner threaded hole is formed in the center of an inner core of the plug. The internal thread hole of the chock plug is meshed with the external thread of the rod body; the upper end cover is combined with the external thread at the upper end of the cylinder body through the internal thread on the peripheral wall; and a tubular end nozzle is formed on the upper side of the upper end cover.

Description

Technical Field

[0001] The present application relates to a medical device, and more particularly to a liquid food delivery device. Background Art

[0002] In clinical practice, for patients who need liquid food, such as patients with nasogastric tubes or gastric tubes, liquid food is generally delivered via a syringe; the tip or nipple of the syringe is docked with the nasogastric tube or gastric tube, and the liquid food is pushed from the syringe into the nasogastric tube or gastric tube by pushing the piston head.

[0003] Liquid food has a relatively high viscosity, so it will be more difficult to push the piston head.

[0004] CN 215351498 U proposes a liquid food feeding device for bedridden patients, which is threaded into a piston head, which is labor-saving on the one hand and easy to control the advancement speed on the other hand.

[0005] The front end of the receiving barrel of the feeding device of CN 215351498 U is detachably provided with an end cover, and the liquid food can be poured into the receiving barrel by removing the end cover. When pouring, the piston head needs to be completely pulled to the rear end of the receiving barrel, so that the piston rod is almost completely pulled out of the receiving barrel, which makes the length of the entire device relatively large, and the entire device is not convenient to stand upright on the table with the opening facing upward stably, so one hand is required to hold the receiving barrel, and the liquid food bag can only be operated with the other hand. The liquid food bag is soft and heavy, and the opening of the receiving barrel is not large, so it is difficult to operate the liquid food bag with one hand and pour it into the receiving barrel accurately. Utility Model Content

[0006] In view of the above problems, the present application aims to provide a liquid food delivery device, which can be stably placed on a table with its opening upward, so as to facilitate the pouring of liquid food into it before the liquid food is delivered.

[0007] The liquid food delivery device of the present application comprises: a cylinder, a rotating rod component, an upper end cover, and a plug;

[0008] The upper end of the cylinder is open; the lower end of the cylinder is closed by a lower end plate; the cross section of the outer periphery of the cylinder is circular; the cross section of the inner periphery of the cylinder is elliptical; a circular through hole is formed at the center of the lower end plate; an external thread is formed on the outer peripheral surface of the upper end of the cylinder;

[0009] The rotary rod component includes a hand wheel and a rod body; the lower end of the rod body is fixed at the center position of the hand wheel; the middle part of the rod body is formed with an external thread to form a screw rod; the rod body is inserted into the cylinder body through the through hole from the bottom of the lower end plate of the cylinder body; the upper end of the rod body extends to the upper end of the cylinder body;

[0010] The plug includes a hard plastic inner core and a silicone layer fixedly arranged around the outer periphery of the inner core; the cross section of the outer periphery of the plug is formed into an ellipse corresponding to the inner periphery of the cylinder; the plug can be slidably installed in the cylinder, and the silicone layer on the outer periphery of the plug is in close contact with the inner periphery of the cylinder; an internal thread hole is formed at the center of the inner core of the plug; the plug is installed on the rod body of the rotating rod member, and the internal thread hole of the plug is engaged with the external thread of the rod body;

[0011] The upper end cover includes a cover plate and a peripheral wall, which extends downward and has an internal thread formed on its inner peripheral surface; the upper end cover is combined with the external thread of the upper end of the cylinder through the internal thread of the peripheral wall, thereby allowing the upper end cover to be removably installed on the upper end of the cylinder; a tubular end nozzle is formed on the upper side of the upper end cover.

[0012] Preferably, a cylindrical mounting hole is formed at the center position of the lower side of the upper end cover, and the upper end of the rod body of the rotary rod member can be rotatably mounted in the mounting hole.

[0013] Preferably, the end nozzle is located at an eccentric position of the upper end cover and is offset from the mounting hole.

[0014] Preferably, four protrusions protruding outward are formed on the circumferential surface of the hand wheel, and the four protrusions are evenly distributed on the circumferential surface of the hand wheel.

[0015] Preferably, the lower side of the hand wheel is formed as a plane.

[0016] The liquid food delivery device of the present application enables the plug to move up and down relative to the rod body through the threaded connection between the plug and the rod body, so that the plug does not need to be moved by withdrawing or inserting the rod body into the cylinder body. Therefore, no matter whether the plug is located at the upper end or the lower end of the cylinder body, the length of the entire device does not change. When the entire device is erected and the upper end of the cylinder body is opened to pour liquid food into the cylinder body, the entire device can be stably erected on the table with the support of the hand wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the liquid food delivery device of the present application;

[0018] Figure 2 for Figure 1 A schematic cross-sectional structure diagram of a liquid food delivery device;

[0019] Figure 3 for Figure 1 A schematic diagram of a top view of the structure of a liquid food conveying device;

[0020] Figure 4 for Figure 1 A schematic diagram of the three-dimensional structure of the cylinder of the liquid food conveying device;

[0021] Figure 5 for Figure 4A schematic diagram of the top view structure of the cylinder;

[0022] Figure 6 for Figure 4 A schematic diagram of the structure of the cylinder viewed from above;

[0023] Figure 7 for Figure 1 A schematic diagram of the three-dimensional structure of a rotating rod component of a liquid food conveying device;

[0024] Figure 8 for Figure 7 A schematic diagram of the main structure of the rotating rod component;

[0025] Fig. 9 for Figure 1 A schematic diagram of the three-dimensional structure of the upper end cover of the rotating rod component of the liquid food conveying device;

[0026] Fig.10 for Fig. 9 A schematic diagram of the top structure of the upper end cover;

[0027] Fig.11 for Fig. 9 A schematic diagram of the structure of the upper end cover viewed from above;

[0028] Fig.12 for Figure 1 A schematic diagram of the three-dimensional structure of the plug head of the rotating rod component of the liquid food conveying device;

[0029] Fig.13 for Fig.12 A schematic diagram of a top view of the plug;

[0030] Fig.14 for Fig.12 Schematic diagram of the cross-sectional structure of the plug. DETAILED DESCRIPTION

[0031] Below, the liquid food conveying device of the present application is described in detail with reference to the accompanying drawings.

[0032] The liquid food delivery device of the present application comprises: a cylinder 10 , a rotating rod component 20 , an upper end cover 30 , and a plug 40 .

[0033] The upper end of the cylinder 10 is open; the lower end of the cylinder 10 is closed by a lower end plate 14; the cross-section of the outer circumference 12 of the cylinder 10 is circular; the cross-section of the inner circumference 11 of the cylinder 10 is elliptical; a circular through hole 13 is formed at the center of the lower end plate 14; and the outer circumferential surface of the upper end of the cylinder 10 is formed with an external thread.

[0034] The rotating rod component 20 includes a handwheel 21 and a rod body 22; the lower end of the rod body 22 is fixed at the center position of the handwheel 21; an external thread 22a is formed in the middle of the rod body 22 to constitute a screw; the rod body 22 is inserted into the cylinder 10 through the through hole 13 from the bottom of the lower end plate 14 of the cylinder 10; the upper end of the rod body 22 extends to the upper end of the cylinder 10.

[0035] The plug 40 includes an inner core 43 made of hard plastic or metal and a silicone layer 42 fixedly arranged around the outer periphery of the inner core 43; the cross section of the outer periphery of the plug 40 is formed into an ellipse corresponding to the inner periphery of the cylinder 10; the plug 40 can be slidably installed in the cylinder 10, and the silicone layer 42 on the outer periphery of the plug 40 is in close contact with the inner periphery 11 of the cylinder 10; an internal thread hole 41 is formed at the center of the inner core 43 of the plug 40; the plug 40 is installed on the rod 22 of the rotating rod member 20, and the internal thread hole 41 of the plug 40 is engaged with the external thread 22a of the rod 22. The fit between the internal thread hole 41 and the external thread portion 22a of the rod 22 should be as precise as possible so that the viscous liquid food does not flow out from the gap between the internal thread and the external thread. Grease or gelatinous food can also be applied in advance in the internal thread hole 41 to prevent the liquid food from flowing out therefrom. Even if a small amount of liquid food flows out therefrom, it is very little compared to the total amount and will not cause any impact.

[0036] The upper end cover 30 includes a cover plate 31 and a peripheral wall 33, the peripheral wall 33 extends downward, and an internal thread is formed on the inner peripheral surface of the peripheral wall 33; the upper end cover 30 is combined with the external thread of the upper end of the cylinder 10 through the internal thread of the peripheral wall 33, thereby the upper end cover 30 can be detachably installed on the upper end of the cylinder 10; a tubular end mouth 32 is formed on the upper side of the upper end cover 30. The end mouth 32 is used to connect with a nasogastric tube or a gastric tube. A cap can be installed on the end mouth 32. Various adapters can also be installed on the end mouth 32 to facilitate adaptation to different nasogastric tubes and gastric tubes.

[0037] A cylindrical mounting hole 34 is formed at the center of the lower side of the upper end cover 30 , and the upper end of the rod body 22 of the rotating rod member 20 is rotatably mounted in the mounting hole 34 .

[0038] The end nozzle 32 is located at an eccentric position of the upper end cover 30 and is offset from the mounting hole 34 .

[0039] Four protruding portions protruding outward are formed on the circumference of the hand wheel 21, and the four protruding portions are evenly distributed on the circumference of the hand wheel 21. When viewed from top to bottom, the four protruding portions extend beyond the outer circumference of the cylinder so as to be stably supported on a flat tabletop.

[0040] The lower side of the hand wheel 21 is formed into a plane, so it can be stably placed on a flat desktop.

[0041] When liquid food needs to be poured into the cylinder, first rotate the handwheel, and the rod body will rotate. Since the plug is oval in shape, it will not rotate with the rod body in the cylinder. The rod body drives the plug head to move along the rod body through its external thread. The principle is the same as the relative movement of the bolt and the nut. This is also the principle of the screw nut pair, which will not be repeated here. When the plug is at the bottom of the cylinder, unscrew the upper end cover, and then stand the entire device without the upper end cover upright on a flat table. Specifically, the handwheel is supported on the table. The upper end opening of the cylinder is open upward, and does not need to be held or fixed by the operator's hands. It is convenient to operate the liquid food bag with both hands to accurately pour the liquid food into the cylinder. After the liquid food is poured, tighten the upper end cover again.

[0042] When liquid food needs to be delivered, the end mouth of the upper end cover is connected to the end of the nasogastric tube or stomach tube, and the hand wheel is rotated to move the plug along the rod toward the upper end cover to squeeze the liquid food in the cylinder from the end mouth and enter the nasogastric tube or stomach tube.

Claims

1. A liquid food delivery device, characterized in that include: Cylinder body, rotating rod component, upper end cover, plug; The upper end of the cylinder is open; the lower end of the cylinder is closed by a lower end plate; the cross section of the outer periphery of the cylinder is circular; the cross section of the inner periphery of the cylinder is elliptical; a circular through hole is formed at the center of the lower end plate; an external thread is formed on the outer peripheral surface of the upper end of the cylinder; The rotary rod component includes a hand wheel and a rod body; the lower end of the rod body is fixed at the center position of the hand wheel; the middle part of the rod body is formed with an external thread to form a screw rod; the rod body is inserted into the cylinder body through the through hole from the bottom of the lower end plate of the cylinder body; the upper end of the rod body extends to the upper end of the cylinder body; The plug includes a hard plastic inner core and a silicone layer fixedly arranged around the outer periphery of the inner core; the cross section of the outer periphery of the plug is formed into an ellipse corresponding to the inner periphery of the cylinder; the plug can be slidably installed in the cylinder, and the silicone layer on the outer periphery of the plug is in close contact with the inner periphery of the cylinder; an internal thread hole is formed at the center of the inner core of the plug; the plug is installed on the rod body of the rotating rod member, and the internal thread hole of the plug is engaged with the external thread of the rod body; The upper end cover includes a cover plate and a peripheral wall, which extends downward and has an internal thread formed on its inner peripheral surface; the upper end cover is combined with the external thread of the upper end of the cylinder through the internal thread of the peripheral wall, thereby allowing the upper end cover to be removably installed on the upper end of the cylinder; a tubular end nozzle is formed on the upper side of the upper end cover.

2. The liquid food delivery device according to claim 1, characterized in that: A cylindrical mounting hole is formed at the center position of the lower side of the upper end cover, and the upper end of the rod body of the rotating rod member can be rotatably mounted in the mounting hole.

3. The liquid food delivery device according to claim 2, characterized in that: The end nozzle is located at an eccentric position of the upper end cover and is misaligned with the mounting hole.

4. The liquid food delivery device according to claim 1, characterized in that: Four protrusions protruding outwards are formed on the circumferential surface of the hand wheel, and the four protrusions are evenly distributed on the circumferential surface of the hand wheel.

5. The liquid food delivery device according to claim 1, characterized in that: The lower side surface of the hand wheel is formed into a flat surface.

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