CN219662322U - A food injector - Google Patents

Abstract

A food injector includes a syringe barrel, a piston rod and a filter; wherein the syringe barrel has an open storage chamber at one end, one end of the piston rod is slidably installed in the storage chamber, and the other end of the piston rod is always outside the storage chamber, and the injection The end of the barrel away from the open opening of the storage chamber is recessed with an injection hole connected to the storage chamber. The filter is arranged in a tapered shape. The filter is opened at both ends and has a large mouth end and a small mouth end. A filter screen is provided at the port of the large mouth end. The small mouth end is detachably connected to the side of the injection barrel provided with the injection hole. In this way, the filter mesh can filter food with larger particles, and because the filter is set in a tapered shape, the large mouth end can contact a larger area of food, so when suctioning, the suction force will be reduced and it will not Because the injection hole is too large, the suction force is increased, which in turn causes large particles of food to be sucked into the storage cavity of the syringe, further preventing pipeline blockage when injecting food.

Description

A food injector

Technical field

The utility model relates to the technical field of medical devices, specifically to a food injector.

Background technique

Rehabilitation patients often need nasogastric feeding due to dysphagia, that is, feeding food into the patient's stomach or intestines through a gastric tube or intestinal tube. Nasogastric feeding is one of the main means to supplement the nutrients needed by the body for patients with dysphagia.

Patients frequently use the syringe during nasogastric feeding. Nowadays, ordinary injectors have larger feeding openings and cannot filter larger solutes, such as drug particles that are not completely ground into powder, food residues, etc., resulting in blockage of the pipeline and the need to re-insert the tube, which increases the pain of the patient and the economy. burden, but also increases the workload of nurses, so there is an urgent need for improvement.

Utility model content

The purpose of this utility model is to overcome the above-mentioned shortcomings and provide a feed injector, aiming to solve the problem of pipe blockage when the feed injector injects food.

A food injector includes a syringe barrel, a piston rod and a filter; wherein the syringe barrel has a storage chamber with an open end, one end of the piston rod is slidably installed in the storage chamber, and the other end of the piston rod is slidably installed in the storage chamber. One end is always outside the storage chamber. The end of the syringe barrel away from the open opening of the storage chamber is recessed with an injection hole connected to the storage chamber. The filter is arranged in a tapered shape. Both ends of the filter The opening is provided with a large mouth end and a small mouth end. A filter grid is provided at the port of the large mouth end. The small mouth end is detachably connected to the side of the injection barrel provided with the injection hole.

Preferably: a connecting barrel is protruding from the end of the small mouth end, the inner peripheral wall of the connecting barrel is provided with internal threads, and the outer peripheral wall of one end of the injection barrel provided with the injection hole is provided with a threaded connection with the internal thread. Fitting external thread.

Preferably, the outer peripheral wall of one end of the injection barrel provided with the injection hole is further provided with an annular boss extending in the circumferential direction of the injection hole, and the annular boss is spaced apart from the external thread.

Preferably: the maximum pore size of the filter grid is set to less than 0.5mm.

Preferably: the filter is made of stainless steel.

Preferably: the syringe barrel is made of transparent material, and the syringe barrel is also provided with a volume scale.

Adopting the above solution, the beneficial effects of this utility model are:

The food injector is provided with a filter at one end of the injection hole of the syringe barrel. The filter is arranged in a tapered shape. A filter grid is provided at the large mouth end of the filter. The filter grid can filter food with larger particles. , to prevent excessively large food particles from blocking the feeding pipe during injection; and because the filter is set in a tapered shape, the large mouth end can contact a larger food area, increasing the suction area, so that when suctioning, the suction area is The suction force will be reduced, and the suction force will not be increased because the injection hole is too large, which will cause larger food particles to be sucked into the storage cavity of the syringe, further avoiding pipeline blockage when injecting food.

Picture description:

Figure 1 is an exploded view of the structure of a food injector of the present invention;

Figure 2 is a schematic structural diagram of a food injector of the present invention;

Figure 3 is a cross-sectional view of a food injector of the utility model;

Figure 4 is a schematic structural diagram of the filter in Figure 1.

Explanation of reference signs: 1. Syringe barrel; 2. Piston rod; 3. Filter; 4. Storage chamber; 5. Injection hole; 6. Large mouth end; 7. Small mouth end; 8. Filter grid; 9. Connecting barrel ; 10. Annular boss; 11. Capacity scale.

Detailed ways

The utility model will be further described below in conjunction with the embodiments. The description of the following embodiments is only used to help understand the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection of the claims of the present utility model. within the range.

Embodiment 1

As shown in Figures 1 to 4, a feed injector includes a syringe barrel 1, a piston rod 2 and a filter 3; wherein the syringe barrel 1 is arranged in a cylindrical shape and has a storage chamber 4 with an open end, and the piston rod 2 One end is slidably installed in the storage chamber 4, and the other end of the piston rod 2 is always outside the storage chamber 4. The open end of the syringe barrel 1 away from the storage chamber 4 is recessed with an injection hole 5 connected to the storage chamber 4. In this way, the piston When the column 2 is pulled, the storage cavity 4 can form a negative pressure, so that the end of the syringe barrel 1 provided with the injection hole 5 can suck food into the storage cavity 4 .

In order to prevent food with larger particles from being sucked into the storage chamber 4, a filter 3 is provided at the injection hole 5 of the syringe 1. Specifically, the filter 3 is arranged in a conical shape, and the filter 3 has openings at both ends. It is provided with a large mouth end 6 and a small mouth end 7. The port of the large mouth end 6 is provided with a filter grid 8. The small mouth end 7 is detachably connected to the side of the injection barrel 1 provided with the injection hole 5.

The filter grid 8 can filter food with larger particles to prevent overly large food particles from blocking the feeding pipe during injection; and because the filter 3 is arranged in a tapered shape, the large mouth end 6 can contact larger food area, increase the suction area, so that when suctioning, the suction force will be reduced, and the suction force will not be increased because the injection hole 5 is too large, thereby causing larger particles of food to be suctioned such as the syringe 1 The 4-piece storage cavity further avoids pipeline blockage when injecting food.

After the feeder is used, the filter 3, syringe 1, and piston rod need to be cleaned. Separating the filter 3 and the syringe 1 facilitates subsequent cleaning work. It should be noted that the filter 3 and the syringe barrel 1 can be connected in a variety of detachable ways. For example, the filter 3 can be connected to the syringe barrel 1 in a snap-on detachable connection way. The filter 3 can also be The filter 3 can be connected to the syringe barrel 1 using a detachable connection method of thread locking. The filter 3 can also be connected to the syringe barrel 1 using other detachable connection methods, which are not specifically limited here.

In addition, the filter grid 8 can exist alone and then be connected to the filter 3 body. The filter grid 8 can also be integrally formed with the filter 3, which is not specifically limited here.

Embodiment 2

On the basis of the first embodiment, in order to facilitate the detachable connection between the filter 3 and the syringe barrel 1, in this embodiment, a connecting barrel 9 is protruding from the end of the small mouth end 7, and the inner peripheral wall of the connecting barrel 9 is provided with internal threads , the outer peripheral wall of one end of the injection barrel 1 provided with the injection hole 5 is provided with an external thread that matches the internal thread. In this way, the cooperation of the internal and external threads facilitates the detachable connection of the filter 3 and the syringe barrel 1.

In addition, in order to prevent the end of the syringe barrel 1 provided with the injection hole 5 from being too deep into the inner cavity of the filter 3 when connected to the filter 3, thereby causing excessive suction when sucking food, in this embodiment, an injection hole is provided An annular boss 10 extending along the circumferential direction of the injection hole 5 is protruding from the outer peripheral wall of one end of the injection hole 5. The annular boss 10 is spaced apart from the external thread. When the filter 3 is threadedly connected to the syringe barrel 1, the end surface of the connecting barrel 9 can contact the annular boss 10 to prevent the syringe barrel 1 from going too deep into the inner cavity of the filter 3.

In order to prevent excessively large food particles from being injected into the pipeline and causing blockage of the pipeline, the maximum pore size of the filter grid 8 in this embodiment is set to less than 0.5 mm.

In addition, in order to ensure that the filter 3 is strong and durable, the filter 3 in this embodiment is made of stainless steel, which is not easy to rust and easy to clean.

In order to facilitate the monitoring personnel to know the amount of injected food, in this embodiment, the syringe barrel 1 is made of transparent material, and the syringe barrel 1 is also provided with a capacity scale 11 .

Claims (6)

1. An annotate feeder, characterized by: the feeder comprises an injection cylinder (1), a piston column (2) and a filter (3); the injection tube (1) is provided with a storage cavity (4) with an open end, one end of the piston column (2) is slidably mounted in the storage cavity (4), the other end of the piston column (2) is always located at the outer side of the storage cavity (4), the injection tube (1) is far away from an injection hole (5) which is formed by the storage cavity (4) in a communicating mode, the filter (3) is arranged in a conical mode, two ends of the filter (3) are provided with a large opening end (6) and a small opening end (7), a filtering grid (8) is arranged at the port of the large opening end (6), and the small opening end (7) is detachably connected with one side of the injection hole (5) where the injection tube (1) is arranged.

2. The feeder of claim 1, wherein: the end part of the small opening end (7) is convexly provided with a connecting cylinder (9), the inner peripheral wall of the connecting cylinder (9) is provided with internal threads, and the outer peripheral wall of one end of the injection cylinder (1) provided with the injection hole (5) is provided with external threads matched with the internal threads in a threaded manner.

3. The feeder of claim 2, wherein: the injection tube (1) is provided with an annular boss (10) extending along the circumferential direction of the injection hole (5) and protruding from the peripheral wall of one end of the injection hole (5), and the annular boss (10) and the external thread are arranged at intervals.

4. The feeder of claim 1, wherein: the maximum pore diameter of the filter grid (8) is smaller than 0.5 mm.

5. The feeder of claim 1, wherein: the filter (3) is made of stainless steel.

6. The feeder of claim 1, wherein: the injection tube (1) is made of transparent materials, and capacity scales (11) are further arranged on the injection tube (1).