阅读说明：本技术 胃肠道营养液注射装置 (Gastrointestinal tract nutrient solution injection device ) 是由 叶俊男 余哲寅 杨超翔 于 2021-09-14 设计创作，主要内容包括：本发明提供了一种胃肠道营养液注射装置,包括上壳体和下壳体,所述上壳体连接设置在所述下壳体上；所述上壳体内活动设置有内螺杆,所述上壳体内驱动内螺杆转动的驱动件,所述内螺杆的一端设置在所述驱动件上,所述内螺杆远离所述驱动件的一端连接设置有外螺杆；所述内螺杆螺纹转动设置在所述外螺杆上,所述外螺杆远离所述内螺杆的一端固定连接设置有活塞；所述下壳体内设置有储液腔体,所述活塞滑动抵接在所述储液腔体的内侧壁上；所述下壳体远离所述上壳体的一端设置有出料口管,所述出料口管与所述储液腔体连通设置；所述储液腔体与所述下壳体之间夹设有保温夹层。本发明具有操作简单,体积小的特点。(The invention provides a gastrointestinal tract nutrient solution injection device which comprises an upper shell and a lower shell, wherein the upper shell is connected and arranged on the lower shell; an inner screw rod is movably arranged in the upper shell, a driving piece for driving the inner screw rod to rotate is arranged in the upper shell, one end of the inner screw rod is arranged on the driving piece, and one end of the inner screw rod, which is far away from the driving piece, is connected with an outer screw rod; the inner screw thread is rotatably arranged on the outer screw, and a piston is fixedly connected to one end, far away from the inner screw, of the outer screw; a liquid storage cavity is arranged in the lower shell, and the piston is in sliding abutting connection with the inner side wall of the liquid storage cavity; a discharge port pipe is arranged at one end of the lower shell, which is far away from the upper shell, and the discharge port pipe is communicated with the liquid storage cavity; and a heat-insulating interlayer is clamped between the liquid storage cavity and the lower shell. The invention has the characteristics of simple operation and small volume.)

1. The gastrointestinal tract nutrient solution injection device is characterized by comprising an upper shell (1) and a lower shell (2), wherein the upper shell (1) is connected and arranged on the lower shell (2);

an inner screw (3) is movably arranged in the upper shell (1), a driving piece (4) which drives the inner screw (3) to rotate is arranged in the upper shell (1), one end of the inner screw (3) is arranged on the driving piece (4), and one end of the inner screw (3) far away from the driving piece (4) is connected with an outer screw (5);

the inner screw (3) is rotatably arranged on the outer screw (5) in a threaded manner, and one end of the outer screw (5) far away from the inner screw (3) is fixedly connected with a piston (6);

a liquid storage cavity (7) is arranged in the lower shell (2), and the piston (6) is in sliding butt joint with the inner side wall of the liquid storage cavity (7);

a discharge port pipe (8) is arranged at one end, far away from the upper shell (1), of the lower shell (2), and the discharge port pipe (8) is communicated with the liquid storage cavity (7);

and a heat-insulating interlayer (9) is clamped between the liquid storage cavity (7) and the lower shell (2).

2. The gastrointestinal tract nutrient solution injection device according to claim 1, wherein the lower housing (2) is provided with a scale window (10), an inner scale (11) is arranged on the liquid storage cavity (7), and the scale window (10) is used for observing the inner scale (11).

3. Gastrointestinal nutrient solution injection device according to claim 1, wherein a sealing ring (12) is provided at the connection of the upper housing (1) and the lower housing (2).

4. Gastrointestinal tract nutrition liquid injection device according to claim 3, wherein the sealing ring (12) is rubber.

5. Gastrointestinal tract nutrient solution injection device according to claim 1, wherein a protective cap (13) is provided on the lower housing (2) at the location of the outlet tube (8), the protective cap (13) being configured to protect the outlet tube (8).

6. Gastrointestinal nutrient solution injection device according to claim 5, wherein the protective cap (13) is rubber.

7. Gastrointestinal nutrient solution injection device according to claim 1, wherein the drive member (4) is an electric motor.

8. The gastrointestinal tract nutrient solution injection device according to claim 1, wherein the heat-insulating interlayer (9) is a polyurethane heat-insulating layer.

9. Gastrointestinal nutrient solution injection device according to claim 1, wherein the piston (6) is rubber.

10. Gastrointestinal nutrient solution injection device according to claim 1, wherein the upper housing (1) and the lower housing (2) are both made of plastic.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a gastrointestinal tract nutrient solution injection device.

Background

The patient that the stomach was excised, need maintain the demand of normal metabolism through injecting nutrient solution, when injecting nutrient solution, have strict requirement to the temperature and the speed of injection, present push rod piston is promoted by the manual work, liquid is injected into skin through the syringe needle, because every operator's proficiency is different, the degree of depth and the liquid inflow that the syringe needle pricked into the skin also can be different, can't guarantee liquid evenly to be introduced into in the skin, the input speed of nutrient solution can not accurately be controlled, can exceed the tolerance ability of human stomach when the speed is too fast. At present, injectors capable of controlling the set temperature and the injection speed exist in the market, but the common structure is complex, the operation is inconvenient, the size is large, and the price is high.

Patent document No. CN210728422U discloses a nutrient solution injection device with an ultrasonic wave introducing function, which includes a housing, a nutrient solution bottle, a piston, a guiding assembly, a driving motor, an injection head, and an ultrasonic wave introducing assembly for providing the nutrient solution with the ultrasonic wave introducing function, wherein the driving motor drives the guiding assembly and the piston to advance toward the injection head at a uniform speed in the axial direction, and the quantitative nutrient solution output from the nutrient solution bottle is transmitted by the injection head and is introduced into the ultrasonic wave through the ultrasonic sheet, so as to promote the absorption of the nutrient solution by the skin cells to the surface layer of the skin. However, this patent document has a drawback of a complicated structure.

Disclosure of Invention

In view of the shortcomings of the prior art, it is an object of the present invention to provide a gastrointestinal tract nutrient solution injection device.

The gastrointestinal tract nutrient solution injection device provided by the invention comprises an upper shell and a lower shell, wherein the upper shell is connected and arranged on the lower shell;

an inner screw rod is movably arranged in the upper shell, a driving piece for driving the inner screw rod to rotate is arranged in the upper shell, one end of the inner screw rod is arranged on the driving piece, and one end of the inner screw rod, which is far away from the driving piece, is connected with an outer screw rod;

the inner screw thread is rotatably arranged on the outer screw, and a piston is fixedly connected to one end, far away from the inner screw, of the outer screw;

a liquid storage cavity is arranged in the lower shell, and the piston is in sliding abutting connection with the inner side wall of the liquid storage cavity;

a discharge port pipe is arranged at one end of the lower shell, which is far away from the upper shell, and the discharge port pipe is communicated with the liquid storage cavity;

and a heat-insulating interlayer is clamped between the liquid storage cavity and the lower shell.

Preferably, the lower shell is provided with a scale window, the liquid storage cavity is provided with an inner scale, and the scale window is used for observing the inner scale.

Preferably, a sealing ring is arranged at the joint of the upper shell and the lower shell.

Preferably, the sealing ring is rubber.

Preferably, a protective cap is arranged at the position of the discharge port pipe on the lower shell, and the protective cap is used for protecting the discharge port pipe.

Preferably, the protective cap is made of rubber.

Preferably, the driving member is a motor.

Preferably, the heat-insulating interlayer is a polyurethane heat-insulating layer.

Preferably, the piston is rubber.

Preferably, the upper shell and the lower shell are both made of plastic.

Compared with the prior art, the invention has the following beneficial effects:

1. the gastrointestinal tract nutrient solution injection device has the characteristics of simple operation and small volume;

2. the invention has simple structure and good economic benefit;

3. the invention has good control effect on the temperature and the injection speed of the injection.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic view showing the overall construction of a gastrointestinal tract nutrient solution injection device according to the present invention;

FIG. 2 is a schematic structural view of the gastrointestinal tract nutrient solution injection apparatus of the present invention in a disassembled state;

FIG. 3 is a perspective cross-sectional view of the gastrointestinal nutrient solution injection apparatus of the present invention;

fig. 4 is a sectional view of the gastrointestinal tract nutrient solution injection device of the present invention.

The figures show that:

discharge opening pipe 8 of upper shell 1

Lower shell 2 heat preservation interlayer 9

Inner screw rod 3 scale window 10

Inner scale 11 of driving piece 4

External screw 5 sealing ring 12

Piston 6 protective cap 13

Liquid storage cavity 7

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.

As shown in fig. 1 to 4, the gastrointestinal nutrient solution injection device provided by the invention comprises an upper shell 1 and a lower shell 2, wherein the upper shell 1 is connected to the lower shell 2, an inner screw rod 3 is movably arranged in the upper shell 1, a driving member 4 for driving the inner screw rod 3 to rotate is arranged in the upper shell 1, one end of the inner screw rod 3 is arranged on the driving member 4, one end of the inner screw rod 3, which is far away from the driving member 4, is connected to an outer screw rod 5, the inner screw rod 3 is arranged on the outer screw rod 5 in a threaded rotating manner, one end of the outer screw rod 5, which is far away from the inner screw rod 3, is fixedly connected to a piston 6, a liquid storage cavity 7 is arranged in the lower shell 2, the piston 6 is in sliding contact with the inner side wall of the liquid storage cavity 7, one end of the lower shell 2, which is far away from the upper shell 1, is provided with a discharge port pipe 8, the discharge port pipe 8 is communicated with the liquid storage cavity 7, and a heat insulation interlayer 9 is arranged between the liquid storage cavity 7 and the lower shell 2. The drive 4 is an electric motor.

Lower casing 2 is provided with scale window 10, is provided with interior scale 11 on the liquid storage cavity 7, and scale window 10 is used for observing interior scale 11.

The joint of the upper shell 1 and the lower shell 2 is provided with a sealing ring 12 which is made of rubber. A protective cap 13 is arranged on the lower shell 2 at the position of the discharge opening pipe 8, the protective cap 13 is used for protecting the discharge opening pipe 8, and the protective cap 13 is made of rubber. The heat-insulating interlayer 9 is a polyurethane heat-insulating layer. The piston 6 is rubber. The upper shell 1 and the lower shell 2 are made of plastic.

Principle of operation：

The motor drives the inner screw rod to rotate, so that the outer screw rod and the piston integrally move vertically in the liquid storage cavity, the uniform injection effect is achieved, and the heat insulation interlayer plays a good heat insulation role in injection.

The gastrointestinal tract nutrient solution injection device is simple to operate, small in size, simple in structure, good in economic benefit and good in control effect on the temperature and the injection speed of the injection.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.