Quantitative dosing device

Abstract

A propelling mechanism comprises a support, the support is fixed on a dosing tube, a lead screw is rotatably connected on the support, a nut is arranged on the lead screw, a push plate is fixed on the nut and slidably connected with the support, a piston rod can be pushed to stretch out and draw back through sliding of the push plate, and a knob is arranged on the lead screw. An elastic clamp is arranged at the position, corresponding to the rotary knob, of the support, a plurality of clamping grooves are formed in the rotary knob, and the elastic clamp is connected in the clamping grooves in a clamped mode.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field, concretely relates to a dosing device. BACKGROUND

[0002] The dosing device is a commonly used dosing equipment in clinical treatment. At present, in clinical treatment, when the ear, eye and other parts of the patient are treated by dosing, the dosing device of the medicine dropping type is usually used, and the dosing device is usually squeezed by the medical staff or the piston rod of the dosing bottle is pushed to realize the dosing operation, but the dosing mode is difficult to control the dosing amount, and once the force is too strong, not only the liquid medicine is wasted, but also the patient is hurt. SUMMARY

[0003] (I) technical problem to be solved

[0004] In order to overcome the defects of the prior art, the dosing device is provided to solve the problems in the background.

[0005] (II) technical scheme

[0006] The utility model discloses a dosing device, including dosing pipe, the piston is arranged in dosing pipe, and the piston rod of piston stretches out dosing pipe, still including advancing mechanism, advancing mechanism includes support, the support is fixed on dosing pipe, the support is connected with the rotation of screw rod, the screw rod is set up on the nut of screw rod, the fixed push board of nut is on, and the push board is connected with the support slidingly, the sliding of push board can push the telescopic of piston rod, the knob is set up on the screw rod, the elastic card is set up on the support corresponding knob position, the multiple card slot is set up on the knob, and the elastic card is clamped in the card slot.

[0007] Further, the elastic card includes a card seat, a spring rod is inserted into the card seat, and the spring rod is clamped into the card slot.

[0008] Further, the front end of the spring rod is arc-shaped.

[0009] Further, the card slots are evenly distributed on the knob.

[0010] (III) beneficial effects

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The dosing device is convenient for controlling the dosing amount of the dosing pipe every time. DRAWINGS

[0013] Figure 1 It is the structure diagram of the utility model.

[0014] Figure 2 This is a side view of the present invention.

[0015] 1-Administration tube; 2-Piston; 21-Piston rod; 3-Support; 31-Lead screw; 32-Lead nut; 33-Push plate; 4-Knob; 41-Slot; 5-Elastic clip; 51-Clip seat; 52-Spring rod. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0017] like Figure 1 and Figure 2 The illustrated metering device includes a delivery tube 1, a piston 2 disposed inside the delivery tube 1, and a piston rod 21 extending out of the delivery tube 1. It also includes a propulsion mechanism, which includes a support 3 fixed to the delivery tube 1. A lead screw 31 is rotatably connected to the support 3, and a nut 32 is disposed on the lead screw 31. A push plate 33 is fixed to the nut 32 and slidably connected to the support 3. The sliding of the push plate 33 can push the piston rod 21 to extend or retract. A knob 4 is disposed on the lead screw 31, and an elastic clip 5 is disposed on the support 3 corresponding to the knob 4. The knob 4 has multiple slots 41, and the elastic clip 5 engages within the slots 41.

[0018] In a preferred embodiment, the elastic card 5 includes a card holder 51, on which a spring rod 52 is inserted and engaged in a card slot 41.

[0019] As a further improvement, the front end of the spring rod 52 is arc-shaped.

[0020] In a preferred embodiment, the slots 41 are evenly distributed around the knob 4.

[0021] The present invention provides a quantitative drug delivery device that, through a propulsion mechanism, controls the advancement of the piston rod 21, thereby effectively controlling the amount of drug administered through the drug delivery tube 1.

[0022] Specifically, in use, the piston rod 21 can be pulled to pre-absorb the medication into the administration tube 1. Then, it is brought close to the patient's ear or other administration location. Rotating the adjustment knob 4 controls the rotation of the lead screw 31, causing the lead screw nut 32 to drive the push plate 33 forward until it contacts the piston rod 21. At this point, rotating the knob 4 step by step, with each rotation using the elastic locking mechanism between the elastic clip 5 and the clip 41, allows for step-by-step control, thereby controlling the distance the piston rod 21 advances each time, and correspondingly controlling the amount of medication dispensed from the administration tube 1 each time.

[0023] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the claims.

Claims

1. A metering device, comprising a delivery tube (1), wherein a piston (2) is disposed inside the delivery tube (1), and the piston rod (21) of the piston (2) extends outside the delivery tube (1), characterized in that: It also includes a propulsion mechanism, which includes a bracket (3) fixed on the drug delivery tube (1). A lead screw (31) is rotatably connected to the bracket (3). A lead screw (32) is provided on the lead screw (31). A push plate (33) is fixed on the lead screw (32), and the push plate (33) is slidably connected to the bracket (3). The sliding of the push plate (33) can push the piston rod (21) to extend and retract. A knob (4) is provided on the lead screw (31). An elastic clip (5) is provided on the bracket (3) at the position corresponding to the knob (4). Multiple slots (41) are provided on the knob (4), and the elastic clip (5) is engaged in the slot (41).

2. The metering device according to claim 1, characterized in that: The elastic card (5) includes a card holder (51), on which a spring rod (52) is inserted and engaged in a card slot (41).

3. The metering device according to claim 2, characterized in that: The front end of the spring rod (52) is arc-shaped.

4. The metering device according to claim 1, characterized in that: The slots (41) are evenly distributed around the knob (4).

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