Electric food injector

Abstract

The utility model relates to an electric food injector which comprises an electric pushing and injecting device, the electric pushing and injecting device comprises a shell, a push rod is in linear sliding fit with the shell, the push rod is matched with an electric driving mechanism for driving the push rod to do linear reciprocating motion, the shell comprises a handheld part, and an injector mounting seat is arranged on the shell. A syringe containing groove coaxial with the push rod is formed in the syringe installation base, a disposable nasal feeding syringe is placed in the syringe containing groove in a positioned mode, and a front supporting plate for supporting the front end of a syringe barrel of the disposable nasal feeding syringe is arranged at the front end of the syringe installation base. A through hole for an injection nipple of the disposable nasal feeding syringe to penetrate out is formed in the front supporting plate, and the push rod is matched with a piston rod of the disposable nasal feeding syringe in a pushing mode. The disposable syringe can be used in cooperation with an existing disposable syringe, the intensity and professional requirements of medical workers are lowered, safety is improved, and cost is reduced.

Description

Technical Field

[0001] The utility model relates to a medical device, more specifically a feeding device. Background Art

[0002] Bedridden patients are often unable to eat on their own, so nasogastric feeding has become a necessary source of food for patients. The birth of the feeder has changed the cumbersomeness and defects of traditional feeding. Existing nasogastric feeding mostly uses a disposable syringe to inject liquid food, and the disposable syringe is manually pushed and operated. The labor intensity of medical staff is high, and it is difficult to control the pushing rate of nasogastric liquid food; and the existing electric feeder has an integral structure whose syringe and drive components cannot be disengaged (such as disclosed in the patent document with patent number CN202020313410.2). Since the equipment is expensive and needs to be repeatedly cleaned and used, the maintenance cost of the equipment is increased, and it brings hidden dangers to food safety. Summary of the invention

[0003] Purpose of the utility model invention: To overcome the defects of the prior art, the utility model provides an electric feed injector that can be used with the existing disposable syringe, thereby reducing the intensity and professional requirements of medical staff, improving safety and reducing costs.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] An electric feed injector includes an electric push injection device, which includes a shell, a push rod is linearly slidably fitted on the shell, and the push rod is fitted with an electric drive mechanism that drives the push rod to move linearly back and forth. The shell includes a hand-held part, which is characterized in that: the shell is provided with a syringe mounting seat, the syringe mounting seat has a syringe placement groove arranged coaxially with the push rod, a disposable nasogastric syringe is positioned and placed in the syringe placement groove, a front support plate that supports the front end of the syringe barrel of the disposable nasogastric syringe is provided at the front end of the syringe mounting seat, a through hole is provided on the front support plate for the injection nipple of the disposable nasogastric syringe to pass through, and the push rod is pushed and fitted with the piston rod of the disposable nasogastric syringe.

[0006] By adopting the above technical scheme, the disposable nasogastric syringe extracts food and is placed in the syringe placement groove of the syringe mounting seat. The injection nipple of the disposable nasogastric syringe passes through the through hole, and the electric drive mechanism drives the push rod to push the piston rod of the disposable nasogastric syringe to complete nasogastric feeding. During the nasogastric feeding process, medical staff only need to press a switch to complete the corresponding operation. It has the advantage of simple operation and can be matched with the existing disposable nasogastric syringe. The disposable nasogastric syringe can be directly discarded after use, thereby ensuring the safety of food and avoiding the cost of cleaning food storage containers.

[0007] Preferably, both sides of the syringe placement groove are provided with stop protrusions that cooperate with the tail wing stopper of the disposable nasogastric syringe, and the syringe of the disposable nasogastric syringe is clamped between the stop protrusions and the front support plate. Under this structural design, the disposable nasogastric syringe is clamped and installed by using the tail wing of the syringe of the disposable nasogastric syringe, which has the advantage of convenient disassembly and assembly.

[0008] Preferably, the push rod is provided with a rack surface, the output end of the electric drive mechanism is a driving gear meshing with the rack surface, two rack surfaces arranged opposite to each other are provided on the push rod, a positioning gear arranged opposite to the driving gear is provided in the housing, and the positioning gear meshes with the corresponding rack surface. Under this structural design, the drive is realized by matching the gear and rack, which has the advantages of stable and reliable drive.

[0009] Preferably, the push rod includes a driving rod with a rack surface, one end of the driving rod is positioned and rotated with an adjusting nut, the adjusting nut is threadedly matched with a push screw, a positioning guide hole is provided in the driving rod, one end of the push screw is provided with a positioning slider that is linearly slidably matched in the positioning guide hole, and the other end of the push screw is provided with a push plate that is pushed and matched with the piston rod of the disposable nasogastric syringe. Under this structural design, the push rod length can be adjusted by rotating the adjusting nut, thereby ensuring that when the amount of liquid food drawn into the disposable nasogastric syringe is different, the push rod and the piston rod of the disposable nasogastric syringe are pushed and matched in a timely and reliable manner.

[0010] The utility model is further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of an electric feeding device according to a specific embodiment of the utility model;

[0012] Figure 2 It is an exploded view of a push rod according to a specific embodiment of the utility model. DETAILED DESCRIPTION

[0013] See attached Figure 1 and attached Figure 2The utility model discloses an electric feed injector, including an electric push injection device, which includes a shell 1. The shell 1 preferably adopts a gun-shaped structure design. A push rod 2 is linearly slidably matched on the shell 1. The push rod 2 is matched with an electric drive mechanism that drives the push rod 2 to move linearly and reciprocally. The shell 1 includes a hand-held part 11. A syringe mounting seat 12 is provided on the shell 1. The syringe mounting seat 12 has a syringe placement groove coaxially arranged with the push rod 2. A disposable nasogastric syringe 3 is positioned and placed in the syringe placement groove. A front support plate 121 supporting the front end of a syringe barrel 31 of the disposable nasogastric syringe 3 is provided at the front end of the syringe mounting seat 12. A through hole is provided on the front support plate 121 for the injection nipple of the disposable nasogastric syringe 2 to pass through. The push rod 2 is pushed and matched with the piston rod 32 of the disposable nasogastric syringe 3. After the disposable nasogastric feeding syringe extracts food, it is placed in the syringe placement slot of the syringe mounting seat. The injection nipple of the disposable nasogastric feeding syringe passes through the through hole, and the electric drive mechanism drives the push rod to push the piston rod of the disposable nasogastric feeding syringe to complete nasogastric feeding. During the nasogastric feeding process, medical staff only need to press a switch to complete the corresponding operation. It has the advantage of simple operation and can be matched with existing disposable nasogastric feeding syringes. The disposable nasogastric feeding syringe can be directly discarded after use, ensuring the safety of food and avoiding the cost of cleaning food storage containers.

[0014] The push rod 2 is provided with a rack surface 21, and the output end of the electric drive mechanism is a driving gear 41 meshing with the rack surface 21. Two rack surfaces 21 arranged opposite to each other are provided on the push rod 2, and a positioning gear 42 arranged opposite to the driving gear 41 is provided in the housing 1, and the positioning gear 42 meshes with the corresponding rack surface 21. The drive is achieved by matching the gear and rack, which has the advantages of stable and reliable driving. In the prior art, the mechanism for realizing the linear reciprocating sliding of the rod-shaped component can be a nut screw mechanism, a bar ratchet and pawl mechanism, etc. in addition to the gear rack mechanism. The electric control part of the electric drive mechanism can have a setting module for human-computer interaction, so that the nasogastric feeding rate can be controlled manually.

[0015] During nasogastric feeding, the amount of liquid food extracted by the disposable nasogastric feeding syringe is different, resulting in different extension lengths of the piston rod of the disposable nasogastric feeding syringe. In order to ensure that the push rod can maintain reliable cooperation with the piston rod of the disposable nasogastric feeding syringe, the push rod 2 includes a driving rod 2-1 with a rack surface 21, one end of the driving rod 2-1 is positioned and rotated with an adjusting nut 2-2, the adjusting nut 2-2 is threadedly matched with a push screw 2-3, a positioning guide hole 2-11 is provided in the driving rod 2-1, one end of the push screw 2-3 is provided with a positioning slider 2-31 that is linearly slidably matched in the positioning guide hole 2-11, and the other end of the push screw 2-3 is provided with a push plate 2-32 that is pushed and matched with the piston rod 32 of the disposable nasogastric feeding syringe 3. The push rod length can be adjusted by rotating the adjusting nut. When necessary, the push rod length can be adjusted to implement timely and reliable push cooperation with the piston rod of the disposable nasogastric feeding syringe.

[0016] In order to facilitate the disassembly and assembly of the disposable nasogastric syringe, the two sides of the syringe placement groove are provided with stop protrusions 122 that cooperate with the tail end fins 311 of the syringe barrel of the disposable nasogastric syringe 3, and the syringe barrel 31 of the disposable nasogastric syringe 3 is clamped between the stop protrusions 122 and the front support plate 121. The disposable nasogastric syringe is clamped and installed by using the tail end fins of the syringe barrel of the disposable nasogastric syringe, which has the advantage of convenient disassembly and assembly. The stop protrusion is provided with a guiding chamfer.

Claims

1. An electric feed injector, comprising an electric push injection device, the electric push injection device comprising a housing, a push rod is linearly slidably fitted on the housing, the push rod is fitted with an electric drive mechanism for driving the push rod to move linearly and reciprocally, the housing comprising a handheld portion, characterized in that: The shell body is provided with a syringe mounting seat, and the syringe mounting seat has a syringe placement groove coaxially arranged with the push rod. A disposable nasogastric syringe is positioned and placed in the syringe placement groove. A front support plate supporting the front end of the syringe barrel of the disposable nasogastric syringe is provided at the front end of the syringe mounting seat. A through hole is provided on the front support plate for the injection nipple of the disposable nasogastric syringe to pass through. The push rod is pushed and matched with the piston rod of the disposable nasogastric syringe.

2. The electric feeding device according to claim 1, characterized in that: Both sides of the syringe placement groove are provided with stop protrusions that cooperate with the tail end wing stop of the syringe barrel of the disposable nasogastric syringe, and the syringe barrel of the disposable nasogastric syringe is clamped between the stop protrusion and the front support plate.

3. The electric feeding device according to claim 1, characterized in that: The push rod is provided with a rack surface, the output end of the electric drive mechanism is a driving gear meshing with the rack surface, the push rod is provided with two oppositely arranged rack surfaces, a positioning gear arranged opposite to the driving gear is provided in the housing, and the positioning gear meshes with the corresponding rack surface.

4. The electric feeding device according to claim 3, characterized in that: The push rod includes a driving rod with a rack surface, one end of the driving rod is positioned and rotatably matched with an adjusting nut, the adjusting nut is threadedly matched with a pushing screw, a positioning guide hole is provided in the driving rod, one end of the pushing screw is provided with a positioning slider which linearly slides in the positioning guide hole, and the other end of the pushing screw is provided with a pushing plate which pushes and matches with the piston rod of the disposable nasogastric syringe.

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