Nutrition feeding injector

Abstract

The utility model discloses a nutrition feeding syringe which comprises an injection gun base and an injection needle cylinder, the injection needle cylinder comprises an empty cylinder, an injection nozzle is arranged at one end of the empty cylinder, a piston is arranged in the empty cylinder, a piston rod is arranged on the piston, and a clutch gear arranged above the piston rod is connected to the injection gun base in a rotating mode. The piston rod is provided with a plurality of meshing teeth arranged at equal intervals in the axial direction of the piston rod, the meshing teeth are meshed on a clutch gear, the clutch gear is rotationally connected with a driving wheel, the side face of the driving wheel is provided with a wrench extending obliquely downwards, and a plurality of wrenching grooves are circumferentially formed in the end face, facing the driving wheel, of the clutch gear. A hidden groove matched with the turning groove is circumferentially distributed in the end face, facing the clutch gear, of the driving wheel, a ratchet elastic piece extending in the tangential direction of the driving wheel and hidden in the hidden groove is arranged in the hidden groove, one end of the ratchet elastic piece is connected with the driving wheel, and the other end of the ratchet elastic piece extends out of a notch of the mounting groove. The injector has the characteristics of quantitative injection and comfortable feeding, and is complete in overall function and high in practicability.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically, to a nutrition feeding syringe. Background Technology

[0002] Traditional syringes for feeding liquid foods lack an axial limiting structure on the piston rod. When excessive pressure is applied in a single injection, an excessive amount of liquid food can be injected in a short period, resulting in poor controllability, patient discomfort, and overall unsatisfactory feeding outcomes. Therefore, this invention proposes a nutritional feeding syringe. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a nutrition feeding syringe that features quantitative injection and comfortable feeding.

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows: This utility model relates to a nutritional feeding syringe, comprising an injection gun holder and an injection syringe mounted on the injection gun holder. The injection syringe includes an empty cylinder with an injection nozzle at one end. A piston is located inside the empty cylinder, and a piston rod extends out of the empty cylinder from the piston. A clutch gear is rotatably connected to the injection gun holder and positioned above the piston rod. The piston rod has several teeth equidistantly arranged along its axial direction, which separably mesh with the clutch gear. A drive wheel coaxially connected to the clutch gear is rotatably connected to the clutch gear. A wrench extending downwards is provided on the side of the drive wheel. Several turning grooves are arranged around the end face of the clutch gear facing the drive wheel. A matching turning groove is arranged around the end face of the drive wheel facing the clutch gear. A ratchet spring extending tangentially along the drive wheel and designed to be concealed within the hidden groove is provided in the hidden groove. One end of the ratchet spring is connected to the drive wheel, and the other end extends out of the mounting groove opening.

[0005] The present invention is further configured such that: the injection gun holder is provided with a reset component for controlling the wrench to reset.

[0006] The present invention is further configured such that the reset assembly includes a tension spring with one end connected to the injection gun holder and the other end connected to a wrench.

[0007] The present invention is further configured such that: a first limiting member is provided on one side of the wrench in the direction of rotation, and a second limiting member is provided on the other side of the wrench in the direction of rotation, and both the second limiting member and the first limiting member are provided on the injection gun holder.

[0008] The present invention is further configured such that: the injection gun holder is provided with an upward-facing slot, the slot extends back and forth, the empty cylinder is fitted into the slot, and a stop baffle is provided at the front end of the slot on the injection gun holder.

[0009] The present invention is further configured such that the included angle between two adjacent rotating slots is equal.

[0010] In summary, the present invention has the following beneficial effects: The nutritional feeding syringe involved in the present invention, by pulling the lever, can cause the rotating drive wheel to drive the clutch gear to rotate, and under the meshing gear transmission, the piston rod is pushed forward a certain distance to the injection nozzle to spray a certain amount of liquid food, ensuring that an equal amount of liquid food can be squeezed out with a single press, quantitative injection, comfortable feeding, complete overall function, and strong practicality. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a partial structural schematic diagram of the present invention;

[0013] Figure 3 This is a partial structural schematic diagram of the present invention;

[0014] Figure 4 yes Figure 3 A structural diagram from another perspective. Detailed Implementation

[0015] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of this utility model, and not for limiting the patent claims of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0016] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0017] Example 1

[0018] See Figures 1 to 4As shown, the nutritional feeding syringe involved in this embodiment includes an injection gun holder 1 and an injection syringe mounted on the injection gun holder. The injection syringe includes an empty cylinder 2, one end of which is provided with an injection nozzle 3. A piston (not shown) is provided inside the empty cylinder 2, and a piston rod 4 extending out of the empty cylinder is provided on the piston. A clutch gear 5 is rotatably connected to the injection gun holder 1 and is provided above the piston rod. A plurality of teeth 6 are provided on the piston rod 4 and are equidistantly arranged along its axial direction. The teeth 6 can be separably engaged with the clutch gear 5. On gear 5, a drive wheel 7 is rotatably connected to the clutch gear 5 and arranged on the same axis. The side of the drive wheel 7 is provided with a wrench 8 that extends obliquely downward. Several turning grooves 9 are arranged around the end face of the clutch gear 5 facing the drive wheel. A hidden groove 10 matching the turning groove is arranged around the end face of the drive wheel 7 facing the clutch gear. A ratchet spring 11 extending along the tangent of the drive wheel and for being stored in the hidden groove is provided in the hidden groove 10. One end of the ratchet spring 11 is connected to the drive wheel, and the other end extends out of the mounting groove opening.

[0019] Furthermore, the injection gun holder 1 is provided with a reset assembly for controlling the wrench to reset; the reset assembly includes a tension spring 12 with one end connected to the injection gun holder and the other end connected to the wrench.

[0020] Furthermore, the injection gun holder 1 is provided with an upward-facing slot 15, which extends back and forth. The empty cylinder 2 is fitted into the slot 15, and a stop baffle 16 is provided at the front end of the slot 15 on the injection gun holder 1.

[0021] Furthermore, the included angle between two adjacent rotating slots 9 is equal.

[0022] In this embodiment, an appropriate amount of liquid food is first added to the syringe, and then the syringe is clamped onto the injection gun holder 1, so that the empty syringe 2 is engaged in the slot 15, the front end of the empty syringe 2 abuts against the stop baffle 16, and the teeth 6 on the piston rod 4 are engaged with the teeth groove on the clutch gear 5. Then the wrench 8 is turned until the wrench 8 drives the drive wheel 7 to rotate. The ratchet spring 11 extending from the hidden groove 10 on the drive wheel 7 abuts against the turning groove 9, thus driving the clutch gear 5 to rotate. As the clutch gear 5 engages with the piston rod 4, the piston rod 4 moves forward with the piston, pushing out an appropriate amount of liquid food from the empty cylinder 2. Finally, the hand holding the lever 8 is released, and the drive wheel 7 resets under the action of the tension spring 12. During the reset, the drive wheel 7 rotates in the opposite direction, and the ratchet spring 11 retracts into the hidden groove 10, not driving the clutch gear 5 to rotate. When the lever 8 is pulled again next time, the piston rod 4 can still be controlled to move forward by the same amount, maintaining the amount of liquid food sprayed each time.

[0023] Example 2

[0024] See Figures 1 to 4As shown, the nutritional feeding syringe involved in this embodiment is further configured, based on embodiment 1, with a first limiting member 13 on one side of the wrench 8 in the rotation direction and a second limiting member 14 on the other side of the wrench 8 in the rotation direction. Both the second limiting member 14 and the first limiting member 13 are provided on the injection gun base 1.

[0025] In this embodiment, the first limiting member 13 and the second limiting member 14 limit the stroke of the wrench 8, so that the stroke of the wrench 8 is equal each time it is turned, and the amount of liquid food squeezed out each time is equal.

[0026] The nutritional feeding syringe involved in this utility model, by pulling the lever, can cause the rotating drive wheel to drive the clutch gear to rotate, and under the meshing gear transmission, the piston rod is pushed forward a certain distance to the injection nozzle to spray a certain amount of liquid food, ensuring that the same amount of liquid food can be squeezed out with a single press, quantitative injection, comfortable feeding, complete overall functions, and strong practicality.

[0027] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the actual orientation or positional relationship shown. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the embodiments and according to the specific circumstances.

[0028] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A nutrient feeding syringe, comprising an injection gun holder and an injection syringe mounted on the injection gun holder, the injection syringe comprising an empty cylinder, one end of which is provided with an injection nozzle, a piston is provided inside the empty cylinder, and a piston rod extending out of the empty cylinder is provided on the piston, characterized in that: A clutch gear is rotatably connected to the injection gun base and located above the piston rod. The piston rod has several teeth equidistantly arranged along its axial direction, which can be separably engaged with the clutch gear. A drive wheel arranged coaxially is rotatably connected to the clutch gear. A wrench extending obliquely downwards is provided on the side of the drive wheel. Several turning grooves are arranged around the end face of the clutch gear facing the drive wheel. A hidden groove matching the turning groove is arranged around the end face of the drive wheel facing the clutch gear. A ratchet spring extending tangentially along the drive wheel and designed to be stored in the hidden groove is provided in the hidden groove. One end of the ratchet spring is connected to the drive wheel, and the other end extends out of the mounting groove opening.

2. The feeding syringe according to claim 1, characterized in that: The injection gun holder is equipped with a reset assembly that controls the wrench for resetting.

3. The feeding syringe according to claim 2, characterized in that: The reset assembly includes a tension spring with one end connected to the injection gun holder and the other end connected to a wrench.

4. The feeding syringe according to claim 3, characterized in that: A first limiting member is provided on one side of the wrench in the direction of rotation, and a second limiting member is provided on the other side of the wrench in the direction of rotation. Both the second limiting member and the first limiting member are provided on the injection gun holder.

5. The feeding syringe according to any one of claims 1-4, characterized in that: The injection gun holder has an upward-facing slot that extends back and forth. The empty cylinder is fitted into the slot, and a stop baffle is provided at the front end of the slot on the injection gun holder.

6. The feeding syringe according to claim 1, characterized in that: The included angle between two adjacent rotating slots is equal.

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