Paraffin oil applicator
By designing a paraffin oil application device with a motor-driven piston, the problems of cumbersome operation and uneven application in the existing technology have been solved, achieving a highly efficient and uniform paraffin oil application effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIUCHENG MATERNAL & CHILD HEALTH HOSPITAL
- Filing Date
- 2025-06-30
- Publication Date
- 2026-05-29
AI Technical Summary
Existing methods for applying paraffin oil are cumbersome, inefficient, and difficult to apply evenly, resulting in poor lubrication and waste.
A paraffin oil application device was designed, comprising a bottle, a brush head, and an extrusion device. The device uses a motor to drive a piston to push paraffin oil to the brush head, and automatic application is achieved by pressing a button. A Hall sensor indicates that the paraffin oil is depleted.
It enables efficient and uniform application of paraffin oil, simplifies the operation process, improves application efficiency, and reduces waste.
Smart Images
Figure CN224293794U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical devices, and in particular to a paraffin oil application device. Background Technology
[0002] In clinical practice, to reduce friction and ensure smooth operation, it is usually necessary to evenly apply paraffin oil as a lubricant to the surface of disposable expanders. However, the current mainstream application methods have significant drawbacks: Firstly, there is the pouring method, where the operator needs to use their other hand to pour the paraffin oil onto a glove before applying it. This method is not only slow and inefficient, but also prone to uneven application, affecting the lubrication effect. Furthermore, the amount poured is difficult to control precisely, often resulting in excessive paraffin oil and unnecessary waste. Secondly, there is the gauze application method, which avoids direct pouring, but still requires the other hand to handle the gauze soaked in paraffin oil. This method also suffers from being cumbersome, slow, and difficult to apply evenly. In addition, the gauze itself is a consumable and needs to be provided and processed separately, increasing the cost of use, and the overall efficiency is still low. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a paraffin oil application device that allows paraffin oil to be directly applied to the application tool, effectively improving the application efficiency.
[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0005] A paraffin oil application device includes a bottle body and a brush head detachably mounted on the bottle opening. Its distinguishing feature is the inclusion of an extrusion device, which comprises a mounting cylinder, a motor, a lead screw, a piston, a battery, and a jog button. The mounting cylinder is detachably connected to the bottom of the bottle body. The motor and battery are both housed inside the mounting cylinder. The bottom of the bottle body has a through hole connecting the inside and outside, through which the motor's output shaft passes and faces the inside of the bottle body. One end of the lead screw is connected to the motor's output shaft, and the other end extends to the bottle opening. The piston is located inside the bottle body, with a threaded hole on its upper surface connecting to its lower surface, which mates with the lead screw. The piston can move within the bottle body under the drive of the lead screw. The battery and motor are electrically connected via a wire, and the jog button is located on the wire between the battery and the motor.
[0006] Compared with the prior art, this utility model achieves at least the following beneficial effects: By setting up an extrusion device, when it is necessary to lubricate the instrument, the brush head of the paraffin oil application device only needs to be aligned with the instrument, and then the jog button is pressed. The paraffin oil will be extruded directly onto the bristles of the brush head through the piston. At this time, medical staff only need to hold the bottle and apply it to the instrument through the brush head. The operation process is simple and the application efficiency is high. Attached Figure Description
[0007] One or more embodiments of the present invention will now be described by way of example only with reference to the accompanying drawings, in which:
[0008] Figure 1 This is a schematic diagram of the paraffin oil application device of this utility model;
[0009] Figure 2 for Figure 1 Exploded view of the paraffin oil application device;
[0010] Figure 3 for Figure 2 A sectional view.
[0011] The following are the labels in the diagram: 1. Bottle body; 11. Through hole; 12. Slide groove; 2. Brush head; 3. Extrusion device; 31. Mounting cylinder; 32. Motor; 33. Lead screw; 34. Piston; 341. Thread hole; 342. Limit block; 35. Battery; 36. Jog button; 37. Buzzer; 38. Hall sensor; 39. Magnet; 4. Forward / reverse rotary switch; 5. Limit ring; 51. Channel hole; 6. Bottle cap; 7. Sealing ring. Detailed Implementation
[0012] The present invention will now be described in detail with reference to exemplary embodiments shown in the accompanying drawings. However, it should be understood that the present invention may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided herein to make the disclosure of the present invention more complete and to fully convey the concept of the present invention to those skilled in the art.
[0013] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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, they should not be construed as limiting the scope of protection of this utility model.
[0014] like Figures 1 to 3 As shown, the paraffin oil application device of this utility model includes a bottle body 1, a brush head 2, and an extrusion device 3.
[0015] The brush head 2 is detachably mounted on the mouth of the bottle body 1. Specifically, in this embodiment, the bottle body 1 is cylindrical, and the outer surface of the bottle mouth is provided with external threads. The brush head 2 has an internal cavity, and its upper end is provided with bristles that communicate with the cavity. The bristles are provided with channels that communicate with the inside and outside of the brush head 2. The lower end is provided with an opening that communicates with the inside and outside of the brush head 2. The inner side of the opening is provided with an internal thread that matches the external threads of the bottle mouth.
[0016] refer to Figure 3 Specifically, the extrusion device 3 includes a mounting cylinder 31, a motor 32, a lead screw 33, a piston 34, a battery 35, and a jog button 36. The mounting cylinder 31 is detachably connected to the bottom of the bottle body 1. The motor 32 and the battery 35 are both located inside the mounting cylinder 31. The bottom of the bottle body 1 has a through hole 11 connecting the inside and outside. The output shaft of the motor 32 passes through the through hole 11 and faces the inside of the bottle body 1. One end of the lead screw 33 is connected to the output shaft of the motor 32, and the other end of the lead screw 33 extends to the bottle mouth of the bottle body 1. The piston 34 is located inside the bottle body 1, and its upper surface has a threaded hole 341 that mates with the lead screw 33, which is located in the middle area of its upper surface and connected to the lower surface. The piston 34 can move inside the bottle body 1 under the drive of the lead screw 33. The battery 35 is electrically connected to the motor 32 through a wire, and the jog button 36 is located on the wire between the battery 35 and the motor 32. In this embodiment, the detachable connection between the mounting cylinder 31 and the bottom of the bottle body 1 is achieved by using screws. To enhance the piston's sealing performance, a sealing ring is fitted onto the piston's outer surface. Simultaneously, to strengthen the seal between the motor 32's output shaft and the bottle body 1, a sealing ring 7 is provided between the motor 32's output shaft and the through hole 11.
[0017] The inner wall of the bottle body 1 is vertically provided with a sliding groove 12, and the side wall of the piston 34 is provided with a limiting block 342 that cooperates with the sliding groove 12. Specifically, in this embodiment, there are two sliding grooves 12, which are symmetrically arranged on the inner wall of the bottle body 1. Similarly, the number of limiting blocks 342 is also equal to the number of sliding grooves 12. With this arrangement, the lead screw 33 can smoothly drive the piston 34 to move, instead of the piston 34 only being able to rotate.
[0018] A forward / reverse rotary switch 4 is provided on the outer wall of the mounting cylinder 31. This rotary switch 4 is located on the wire between the battery 35 and the jog button 36. With this configuration, the motor 32 can rotate forward and reverse, thereby driving the piston 34 to rise or fall inside the bottle body 1.
[0019] A buzzer 37 is installed inside the mounting cylinder 31, a Hall sensor 38 is installed on the upper side wall of the bottle body 1, and a magnet 39 is installed inside the side wall of the piston 34. The Hall sensor 38 and the buzzer 37 are electrically connected in the power supply circuit of the motor 32. With this configuration, when the piston 34 enters the magnetic field sensing area of the Hall sensor 38, the Hall sensor 38 outputs a feedback signal to the buzzer 37, and the buzzer 37 will immediately sound an alarm, allowing medical personnel to know by sound that the paraffin oil in the bottle body 1 is exhausted. Specifically, in this embodiment, the motor 32 is a DC geared motor 32, model JGA25-370-12V. The Hall sensor 38 is model A3144EUA-T. The buzzer 37 is an active buzzer 37 with a built-in drive circuit, which sounds when powered by DC. In this circuit, the VCC power supply terminal of the Hall sensor 38 is connected to the wire between the jog button 36 and the motor 32, the GND ground terminal of the Hall sensor 38 is directly connected to the negative terminal of the battery 35, the positive input terminal of the buzzer 37 is connected in parallel to the VCC power supply terminal of the Hall sensor 38, and the negative input terminal of the buzzer 37 is connected to the OUT signal output terminal of the Hall sensor 38. When the piston 34 moves to the magnetic field sensing area of the Hall sensor 38, the magnet 39 on the piston 34 triggers the Hall sensor 38, making the OUT signal output terminal of the Hall sensor 38 conduct with the GND ground terminal, thereby forming a complete power-on circuit for the buzzer 37.
[0020] A limiting ring 5 is fixed inside the bottle mouth of the bottle body 1. The end of the lead screw 33 away from the output shaft of the motor 32 is rotatably mounted on the inner ring of the limiting ring 5. Several channel holes 51 connecting the upper and lower surfaces are evenly spaced circumferentially between the inner and outer rings of the limiting ring 5. In this way, the liquid inside the bottle body 1 can flow through the channel holes 51 through the brush head 2 to the outside of the bristles.
[0021] To prevent the brush head 2 from causing contamination, a bottle cap 6 is detachably provided at the bottle mouth end of the bottle body 1, and the bottle cap 6 is detachably threadedly connected to the bottle body 1.
[0022] The paraffin oil application device is used as follows: When in use, medical personnel align the bottle 1 containing paraffin oil with the brush head 2 onto the disposable expander. Then, they adjust the forward / reverse knob 4 to the forward position and press the jog button 36. The motor 32 starts, driving the lead screw 33 to drive the piston 34, squeezing the paraffin oil from the bottle 1 onto the bristles of the brush head 2. The medical personnel then evenly apply the paraffin oil-coated brush head 2 onto the disposable expander. This process does not require the medical personnel to apply pressure to the bottle 1 to squeeze out the paraffin oil, making it efficient and labor-saving. When the piston 34 moves to the top of the bottle 1, the magnet 39 of the piston 34 enters the magnetic field sensing area of the Hall sensor 38. The Hall sensor 38 outputs a feedback signal to the buzzer 37, which immediately sounds an alarm, reminding the user that the paraffin oil in the bottle 1 is depleted and that the jog button 36 needs to be released, and that paraffin oil needs to be replenished. When refilling paraffin oil, the user should turn the bottle 1 upside down, unscrew the brush head 2, adjust the forward / reverse knob 4 to the reverse position, and then press the jog button 36 to make the piston 34 slide to the bottom of the bottle, and pour the paraffin oil into the bottle 1 through the bottle opening.
[0023] It should be understood that all the above embodiments are exemplary and not restrictive. Various modifications or variations made by those skilled in the art to the specific embodiments described above under the concept of this utility model should be within the protection scope of this utility model.
Claims
1. A paraffin oil application device, comprising a bottle body (1) and a brush head (2) detachably mounted on the bottle mouth of the bottle body (1), characterized in that: It also includes an extrusion device (3), which includes a mounting cylinder (31), a motor (32), a lead screw (33), a piston (34), a battery (35), and a jog button (36). The mounting cylinder (31) is detachably connected to the bottom of the bottle body (1). The motor (32) and the battery (35) are both located inside the mounting cylinder (31). The bottom of the bottle body (1) has a through hole (11) connecting the inside and outside. The output shaft of the motor (32) passes through the through hole (11) and faces the inside of the bottle body (1). One end of the lead screw (33) is connected to the output shaft of the motor (32), and the other end of the lead screw (33) extends to the mouth of the bottle body (1). The piston (34) is located inside the bottle body (1), and the middle area of its upper surface is connected to the lower surface with a thread hole (341) that cooperates with the lead screw (33). The piston (34) can move inside the bottle body (1) under the drive of the lead screw (33). The battery (35) is electrically connected to the motor (32) through a wire. The jog button (36) is located on the wire between the battery (35) and the motor (32).
2. The paraffin oil application device according to claim 1, characterized in that: The inner wall of the bottle (1) is vertically provided with a sliding groove (12), and the side wall of the piston (34) is provided with a limiting block (342) that cooperates with the sliding groove (12).
3. The paraffin oil application device according to claim 2, characterized in that: The outer wall of the mounting cylinder (31) is provided with a forward and reverse rotary switch (4), which is located on the wire between the battery (35) and the jog button (36).
4. The paraffin oil application device according to claim 3, characterized in that: The mounting cylinder (31) is equipped with a buzzer (37), the upper side wall of the bottle body (1) is equipped with a Hall sensor (38), and the side wall of the piston (34) is equipped with a magnet (39); the Hall sensor (38) and the buzzer (37) are electrically connected in the power supply circuit of the motor (32).
5. The paraffin oil application device according to claim 4, characterized in that: A limiting ring (5) is fixed inside the bottle mouth of the bottle body (1). The end of the screw (33) away from the output shaft of the motor (32) is rotatably set on the inner ring of the limiting ring (5). Several channel holes (51) connecting the upper and lower surfaces are evenly spaced circumferentially between the inner ring and the outer ring of the limiting ring (5).
6. The paraffin oil application device according to claim 1, characterized in that: The bottle body (1) is detachably equipped with a bottle cap (6) at the bottle mouth end.