Portable breast tissue elastography detection pen

Abstract

The utility model relates to a portable breast tissue elasticity imaging detection pen for outpatient department rapid preliminary screening, especially suitable for primary medical treatment. The detection pen is provided with an electromagnetic self-locking type switch button, comprising a button cap, a reset spring, a support connecting rod, a bridge type movable contact, a static contact, a terminal post A, a terminal post B, a pressure trigger piece, an armature strip and an electromagnet. When the power is turned on, the electromagnet generates a magnetic field after being electrified, attracts the armature strip to attract, locks the button position, and ensures the stable work of the detection pen; when turned off, the button cap is pressed to make the support connecting rod press the pressure trigger piece, the elastic copper piece is deformed to disconnect the electromagnet power supply circuit, the reset spring pushes the button cap to rebound, and the circuit is completely disconnected.

Description

Technical Field

[0001] This utility model relates to the field of medical testing equipment technology, specifically to a press-type self-locking switch structure for a portable breast elastography pen, and particularly to the design of its button switch. Background Technology

[0002] Breast cancer is one of the most common malignant tumors in women, and early detection and diagnosis are crucial for improving cure rates and reducing mortality. Currently, the detection and diagnosis of breast lumps mainly rely on methods such as ultrasound, mammography, and magnetic resonance imaging (MRI).

[0003] However, most existing portable breast tissue elastography pens use a sliding switch design, which has many drawbacks: (1) The sliding switch lacks a locking mechanism, and the device is prone to accidental start-up or shutdown due to accidental contact, resulting in a high risk of misoperation; (2) In emergency surgical preparation, medical staff wearing gloves find it difficult to operate accurately with one hand, leading to cumbersome and time-consuming operation; (3) The sliding switch is easily affected by sweat or disinfectant and becomes slippery, increasing the difficulty of operation. Summary of the Invention

[0004] This invention aims to provide a self-locking push-button switch structure to achieve stable start-up and shutdown of the detection pen. This switch structure can be locked or unlocked with a simple pressing operation, ensuring the stability and ease of use of the device in various environments.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a portable breast tissue elastography pen, comprising a handheld device body and a switch button. The handheld device body has a rechargeable lithium battery inside and a USB-C charging interface on the outside. The surface of the handheld device body is coated with a nano-antibacterial coating. The end of the elastography probe is equipped with a protective cover. The switch button adopts an electromagnetic self-locking structure design, including a button cap, a return spring, a support rod, a bridge-type moving contact, a stationary contact, terminal A, terminal B, a pressure trigger plate, an armature bar, and an electromagnet. The button cap is fixed to the top of the support rod, the return spring is sleeved on the outer surface of the support rod, and the bottom end of the support rod is connected to the bridge-type moving contact; the stationary contact is set inside the handheld device body and connected to terminal B; terminal A is connected to the positive terminal of the rechargeable lithium battery, and terminal B is connected to the positive terminal of the power input inside the test pen; the electromagnet is installed on the outer surface of the inner shell (211) of the handheld device body near the button cap (21), its coil winding is connected in series with terminal A, and the armature bar is fixed to the bottom of the button cap; the pressure trigger piece is an elastic copper sheet, connected in series with the power supply line of terminal B, closed under normal conditions, and disconnected when pressure is applied.

[0006] Preferably, the button cap of the switch button is ergonomically designed with a non-slip texture on the surface to improve the grip stability when the operator is wearing gloves or has wet hands.

[0007] Preferably, the return spring is made of stainless steel, which has high elasticity and corrosion resistance, and can maintain stable elasticity during frequent compression and release.

[0008] Preferably, the bridge-type moving contact 24 and stationary contact 25 are made of gold-plated copper alloy to reduce contact resistance and improve conductivity, thereby ensuring the reliability and stability of the circuit connection.

[0009] Preferably, the nano-antibacterial coating is composed of silver-titanium dioxide composite material. The coating can kill multidrug-resistant bacteria attached to the surface of the test pen, reducing the risk of iatrogenic infection. At the same time, the coating does not affect the grip of the test pen, taking into account both functionality and user experience. It is suitable for repeated use scenarios in primary healthcare.

[0010] Furthermore, the USB-C charging port supports the PD fast charging protocol.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) The switch button of this utility model adopts a self-locking or electromagnetic self-locking structure design, which effectively solves the problem of the lack of locking mechanism in sliding switches. This innovative locking design can prevent the device from starting or stopping due to accidental collision, significantly reducing the risk of misoperation and improving the stability and reliability of the device during use; (2) When medical staff wear gloves, they can still operate the testing pen easily and accurately with one hand. This improvement simplifies the operation process, effectively saves valuable operation time, and improves the efficiency of medical work; (3) The advanced switch button ensures that the device will not slip due to wet hands, reduces the impact of environmental factors, and enhances the practicality of the device. Attached Figure Description

[0012] Figure 1 is a front view of the overall structure of this utility model.

[0013] Figure 2 is a schematic diagram of the specific structure of the switch button of this utility model.

[0014] Figure 3 is a schematic diagram of the working state of the switch button of this utility model.

[0015] The attached figures are labeled as follows: 1. Handheld device body; 11. Rechargeable lithium battery; 2. Switch button; 21. Button cap; 22. Return spring; 23. Support rod; 24. Bridge-type moving contact; 25. Stationary contact; 26. Terminal A; 27. Terminal B; 28. Pressure trigger plate; 29. ​​Armature bar; 210. Electromagnet; 211. Inner shell; 212. Base; 213. Electrical wire; 3. Anti-slip texture; 4. Charging interface; 5. Nano antibacterial coating; 6. Insulating pad; 7. Insulating shell. Detailed Implementation

[0016] To provide a better understanding of the purpose, structure, features, and functions of this utility model, detailed descriptions are provided below with reference to specific embodiments.

[0017] Please refer to Figure 1 to... Figure 3 Portable breast tissue elastography pen, such as Figure 1 As shown, the device includes a handheld device body 1 and a switch button 2. The handheld device body 1 has a rechargeable lithium battery 11 inside and an LED indicator 3 and a charging interface 4 on the outside. The surface of the handheld device body 1 is coated with a nano antibacterial coating 5. The switch button 2 adopts an electromagnetic self-locking structure design, including a button cap 21, a return spring 22, a support rod 23, a bridge-type moving contact 24, a stationary contact 25, a terminal A 26, a terminal B 27, a pressure trigger piece 28, an armature bar 29, and an electromagnet 210. The button cap 21 is fixed to the top of the support rod 21, the return spring 22 is sleeved on the outer surface of the support rod 23, and the bottom end of the support rod 23 is connected to the bridge-type moving contact 24; the stationary contact 25 is connected to the terminal B 27; the terminal A 26 is connected to the positive terminal of the rechargeable lithium battery 11, and the terminal B 27 is connected to the positive terminal of the internal power input of the test pen; the electromagnet 210 is installed on the outer surface of the inner shell (211) of the handheld device body near the button cap (21), its coil winding is connected in series with the terminal A 26, and the armature bar 29 is fixed to the bottom of the button cap 21; the pressure trigger piece 28 is an elastic copper sheet, connected in series with the power supply line of the electromagnet 210, closed under normal conditions, and disconnected when pressure is applied. An insulating gasket 6 is provided between the armature bar 29 and the button cap 21 to prevent current leakage and improve safety. The surface of the handheld device body 1 is coated with a nano antibacterial coating 5 to kill bacteria attached to the surface of the test pen and reduce the risk of iatrogenic infection. The electrical components of the switch button 2 are housed in an insulating housing 7, which is fixed to the side of the outer shell of the handheld device body 1, serving as protection and insulation to ensure stable and reliable internal electrical connections.

[0018] Before use, the operator needs to check whether the rechargeable lithium battery 11 of the handheld device body 1 has sufficient power. If the power is insufficient, connect the charger through the charging port 4 on the side of the handheld device body 1 for charging. The charging port 4 adopts a standard USB-C interface design and uses the PD fast charging protocol to ensure that the test pen can be conveniently recharged in different environments.

[0019] Switch button 2 adopts an electromagnetic self-locking structure design, such as Figure 2 As shown, the device includes a button cap 21, a return spring 22, a support rod 23, a bridge-type moving contact 24, a stationary contact 25, terminal A 26, terminal B 27, a pressure trigger plate 28, an armature bar 29, and an electromagnet 210. In the initial state, the return spring 22 is in its naturally extended state, the button cap 21 is located outside the outer shell of the handheld device body 1, there is a certain gap between the bridge-type moving contact 24 and the stationary contact 25, the electromagnet 210 is not energized, and the circuit is not open.

[0020] like Figure 3 As shown, when the operator presses the button cap 21, the button cap 21 moves down and compresses the return spring 22. The support rod 23 pushes the bridge moving contact 24 downward until it contacts the stationary contact 25, forming a closed circuit. At this time, current is transmitted from the positive terminal of the rechargeable lithium battery 11 through the terminal A 26 on the A side, the bridge moving contact 24, the stationary contact 25, and the terminal B 27 on the B side, to the negative terminal of the rechargeable lithium battery 11, thus forming a complete circuit, realizing the power supply of the test pen, and ensuring the normal operation of the test pen.

[0021] When the power is turned on, current flows from the positive terminal of the rechargeable lithium battery 11, through wire 213 to terminal A 26 on the A side, then through wire 213 to the coil of the electromagnet 210, then through wire 213 to terminal A 26 on the B side, and finally back to the negative terminal of the rechargeable lithium battery 11, thus forming a complete circuit loop. This energizes the electromagnet 210 and generates a magnetic field, attracting the armature bar 29 to engage, thereby locking the button position. At this time, the end of the support rod 23 is still a small distance from the pressure trigger piece 28 and is not fully in contact, so the test pen starts and remains in working condition. This electromagnetic self-locking mechanism ensures that the test pen will not be accidentally shut down due to vibration or misoperation during use, ensuring the continuity and stability of the testing process. When it is necessary to shut down the test pen, the operator presses the button cap 21 again, and the return spring 22 pushes it to the bottom limit position. The end of the support rod 23 contacts the pressure trigger plate 28 and presses it down. The pressure trigger plate 28 is a flexible copper sheet connected in series with the power supply circuit of terminal B 27. Normally closed, it breaks the circuit when pressed. The pressure trigger plate 28 deforms elastically, causing its internal metal contacts to separate, thus cutting off the circuit connection between terminal A 26 and electromagnet 210. This disconnects the power supply circuit of electromagnet 210, causing the magnetic field to disappear. Specifically, the power supply circuit of electromagnet 210 is as follows: current flows from the positive terminal of rechargeable lithium battery 11, through terminal A 26 on the A side, into the coil winding of electromagnet 210, and then returns to the negative terminal of rechargeable lithium battery 11 through terminal A 26 on the B side. When the pressure trigger plate 28 is disconnected, the current cannot form a closed circuit through terminal B 27, causing the coil winding of electromagnet 210 to lose power, and the magnetic field disappears. The reset spring 22 releases its elastic force, pushing the button cap 21 back to its initial position. The bridge-type moving contact 24 separates from the stationary contact 25, the circuit is completely disconnected, and the test pen is turned off.

[0022] In practical use, the nano-antibacterial coating 5 applied to the surface of the handheld device body 1 can effectively kill various drug-resistant bacteria attached to the surface of the testing pen, significantly reducing the risk of iatrogenic infection. At the same time, the nano-antibacterial coating 5 has good wear resistance and corrosion resistance, and will not easily peel off due to frequent cleaning and disinfection, ensuring the hygiene and safety of the testing pen during long-term use.

[0023] This utility model has been described by the above-described embodiments; however, these embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. Conversely, any modifications and refinements made without departing from the spirit and scope of this utility model are within the scope of patent protection of this utility model.

Claims

1. A portable breast tissue elastography pen, characterized in that: The device includes a handheld device body (1) and a switch button (2). The switch button (2) is located outside the handheld device body (1) and includes a button cap (21), a return spring (22), a support rod (23), a bridge-type moving contact (24), a stationary contact (25), a terminal A (26), and a terminal B (27). The button cap (21) is connected to the support rod (23). The return spring (22) is sleeved on the outer surface of the support rod (23). The bridge-type moving contact (24) is connected to the terminal A (26), and the stationary contact (25) is connected to the terminal B (27).

2. The portable breast tissue elastography pen according to claim 1, characterized in that: The switch button (2) also includes an insulating housing (7), a pressure trigger plate (28), an armature bar (29), and an electromagnet (210); the insulating housing (7) is fixed inside the handheld device body (1); the button cap (21) is located outside the insulating housing (7), and the reset spring (22), support rod (23), bridge moving contact (24), stationary contact (25), terminal A (26), terminal B (27), pressure trigger plate (28), armature bar (29), and electromagnet (210) are located inside the insulating housing (7). The pressure trigger plate (28) is installed on the base (212) inside the insulating housing (7) and connected in series with the power supply line of the electromagnet (210). The armature bar (29) is fixed to the bottom of the button cap (21), and the electromagnet (210) is installed on the outer surface of the inner shell (211) of the handheld device body close to the button cap (21), and its coil winding is connected in series with terminal A (26).

3. The portable breast tissue elastography pen according to claim 1, characterized in that: The handheld device body (1) has a charging interface (4) on its side, which is connected to a rechargeable lithium battery (11).

4. The portable breast tissue elastography pen according to claim 1, characterized in that: The top of the button cap (21) has an anti-slip texture (3).

5. The portable breast tissue elastography pen according to claim 1, characterized in that: The surface of the handheld device body (1) is coated with a nano antibacterial coating (17).

6. The portable breast tissue elastography pen according to claim 2, characterized in that: An insulating pad (6) is provided between the armature bar (29) and the button cap (21).

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