Solution color recognition device within negative pressure syringe for endoscopic ultrasound needle

Abstract

The utility model relates to medical auxiliary instrument technical field, concretely relates to a negative pressure syringe internal solution color identification device for endoscopic ultrasound puncture needle. The device includes clamping structure and detection unit. Clamping structure is installed on the outer wall of negative pressure syringe. Clamping structure is configured to form the clamping to the outer wall of negative pressure syringe by snap ring, and provides the detection window for detection unit to identify the detection cavity of negative pressure syringe internal solution color. The color identification sensor in detection unit is installed in detection cavity. The detection end of color identification sensor is right to the inside of negative pressure syringe. Detection unit is configured to emit light to negative pressure syringe by the light source in color identification sensor through detection window, and receives the light reflected back by solution in negative pressure syringe by photosensitive element, converts the light signal into electric signal. The device plays an auxiliary role to the solution color identification of operator, and improves the operation safety.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary device technology, specifically to a solution color recognition device for a negative pressure syringe used for endoscopic ultrasound puncture needles. Background Technology

[0002] The negative pressure injector for endoscopic ultrasound (EUS) puncture needle is a key component in EUS-guided fine-needle aspiration biopsy. It is primarily used to generate negative pressure during the puncture process to aspirate cells or tissue samples. The operator makes a preliminary assessment of the puncture procedure by observing the color of the injector's container, and then, in conjunction with the images obtained from the endoscopic ultrasound, determines whether the needle has collected the desired sample. For example, if the liquid in the injector's container is blood-colored, it may indicate that a blood vessel has been encountered during the puncture; if the liquid is yellowish-white, it may indicate an infection in nearby tissue.

[0003] However, due to the complex surgical environment and various interfering factors such as unstable lighting conditions and visual obstruction, operators are prone to visual fatigue during prolonged and high-intensity surgical procedures. This significantly increases the probability of misidentifying the color of the solution within the negative pressure syringe container. Especially when there are subtle changes in the color of the solution, operators struggle to make an accurate assessment of the puncture status immediately. Once a color identification error occurs, it may lead to misjudgment of the puncture situation by the operator, thereby affecting the accuracy of sampling. Summary of the Invention

[0004] In view of the above-mentioned technical problems, this utility model proposes a solution color recognition device for a negative pressure syringe used for endoscopic ultrasound puncture needles, including a clamping structure and a detection unit;

[0005] The clamping structure is installed on the outer wall of the negative pressure injector. The clamping structure includes a retaining ring with a mounting part. A detection cavity is formed between the mounting part and the side wall of the negative pressure injector. The clamping structure is configured to clamp the outer wall of the negative pressure injector using the retaining ring and to provide a detection window for the detection unit to identify the color of the solution inside the negative pressure injector using the detection cavity.

[0006] The detection unit includes a color recognition sensor installed in the detection chamber, with the detection end of the color recognition sensor facing the inside of the negative pressure injector. The detection unit is configured to use a light source in the color recognition sensor to emit light into the negative pressure injector through the detection window, and to use a photosensitive element to receive the light reflected back by the solution in the negative pressure injector, converting the light signal into an electrical signal.

[0007] Therefore, the color recognition sensor in the detection unit is installed on the side wall of the negative pressure syringe through a clamping structure. The light source in the color recognition sensor emits light of a specific wavelength into the solution inside the syringe through the detection window. After the light penetrates the syringe wall, it interacts with the solution. The substances in the solution selectively absorb or reflect light of different wavelengths, causing changes in the spectral characteristics of the reflected light. After the reflected light returns through the solution, it is captured by the photosensitive element through the detection window. The photosensitive element converts the light signal into an electrical signal. The intensity and spectral distribution of the signal are directly related to the color of the solution. During endoscopic ultrasound puncture, real-time identification of the color of the solution inside the negative pressure syringe can help the operator determine whether the puncture has successfully entered the target tissue, avoid complications, and improve operational safety.

[0008] Preferably, the mounting part is provided with a mounting hole, and the mounting end of the color recognition sensor is screwed into the mounting hole by a thread.

[0009] Preferably, the retaining ring includes a first half-ring, a second half-ring, and a locking mechanism. The first half-ring is hinged to the second half-ring via a pivot, and the openings of the first half-ring and the second half-ring are connected by the locking mechanism.

[0010] Preferably, the mounting section is located on the first half-ring.

[0011] Preferably, the locking mechanism includes a connecting shaft, a compression spring, and a handle. One end of the connecting shaft is hinged to the first half-ring, and the other end of the connecting shaft is hinged to the handle. The opening of the second half-ring has a slot, and the compression spring is sleeved on the connecting shaft and located between the first and second half-rings.

[0012] Preferably, a liner is provided on the inner wall of the second half-ring, and the liner is configured to provide a background color for solution color recognition on the opposite side of the detection end of the color recognition sensor.

[0013] Preferably, a buffer pad is provided on the inner wall of the retaining ring.

[0014] Preferably, the color recognition sensor is either reflective or through-beam.

[0015] Compared with the prior art, the color recognition device for the solution inside a negative pressure syringe for endoscopic ultrasound puncture needles provided by this utility model has the following substantial features and advancements: This device, through an integrated clamping structure of the retaining ring and the mounting part, directly fixes the color recognition sensor in the detection unit to the outer wall of the negative pressure syringe without requiring modification of the syringe body. It can quickly adapt to syringes of different specifications, and the physical clamping forms a rigid connection. During endoscopic ultrasound puncture, the color recognition sensor simultaneously identifies the color of the solution in the negative pressure syringe, avoiding interference from the complex surgical environment. This assists the operator in determining whether the puncture has successfully entered the target tissue, improving operational safety. In particular, the design of the retaining ring integrated mounting part, combined with the structure of the detection cavity, facilitates the formation of a relatively closed optical path structure for the color recognition sensor, thereby effectively isolating the color recognition sensor from external stray light interference. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a solution color recognition device in a negative pressure syringe used for ultrasonic endoscopy puncture needles, according to an embodiment of this utility model.

[0017] Figure 2 yes Figure 1 A three-dimensional structural diagram of a solution color recognition device in a negative pressure syringe used for endoscopic ultrasound puncture needles, viewed from another angle.

[0018] Figure 3 yes Figure 1 The main view.

[0019] Figure 4 yes Figure 3 A schematic diagram of the cross-sectional structure at point AA.

[0020] Reference numerals: 1. Clamping structure; 2. Detection unit; 3. Syringe; 11. First half-ring; 12. Second half-ring; 13. Mounting part; 14. Detection cavity; 15. Locking mechanism; 16. Liner plate; 21. Color recognition sensor; 151. Connecting shaft; 152. Compression spring; 153. Handle. Detailed Implementation

[0021] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] Due to the complex surgical environment and various interfering factors such as unstable lighting conditions and visual obstruction, operators are prone to visual fatigue during prolonged and high-intensity endoscopic ultrasound puncture procedures. This significantly increases the probability of misidentifying the color of the solution inside the negative pressure syringe. This invention proposes a solution color identification device for endoscopic ultrasound puncture needles using a negative pressure syringe. The aim is to achieve real-time and accurate color identification of the solution, assisting operators in color recognition and addressing the problems of insufficient adaptability and weak anti-interference capabilities of existing detection devices.

[0023] This invention presents a solution color recognition device for a negative pressure syringe used for endoscopic ultrasound puncture needles. Through the coordinated design of a clamping structure and a detection unit, a stable detection cavity is formed using a retaining ring, combined with non-contact optical detection by a color recognition sensor. The integrated clamping structure of the retaining ring and mounting part directly fixes the color recognition sensor in the detection unit to the outer wall of the negative pressure syringe without requiring modification of the syringe body, allowing for quick adaptation to syringes of different specifications. Furthermore, the design of the integrated mounting part, combined with the structure of the detection cavity, facilitates the formation of a relatively closed optical path structure for the color recognition sensor, effectively isolating it from interference from external stray light.

[0024] like Figure 1 As shown, a solution color recognition device for a negative pressure syringe used for endoscopic ultrasound puncture needles includes a clamping structure 1 and a detection unit 2.

[0025] like Figure 2 As shown, the clamping structure 1 is mounted on the outer wall of the negative pressure syringe. The clamping structure 1 includes a retaining ring. A mounting portion 13 is provided on the retaining ring. A detection cavity 14 is formed between the mounting portion 13 and the side wall of the negative pressure syringe. The clamping structure 1 is configured to clamp the outer wall of the negative pressure syringe using the retaining ring, and to provide a detection window for the detection unit 2 to identify the color of the solution inside the negative pressure syringe using the detection cavity 14.

[0026] like Figure 2 and Figure 4 As shown, the detection unit 2 includes a color recognition sensor 21. The color recognition sensor 21 is installed in the detection chamber 14. The detection end of the color recognition sensor 21 faces the inside of the negative pressure syringe. The detection unit 2 is configured to use the light source in the color recognition sensor 21 to emit light into the negative pressure syringe through the detection window, and use a photosensitive element to receive the light reflected back by the solution in the negative pressure syringe, converting the light signal into an electrical signal.

[0027] Among them, the negative pressure injector is Figure 2The syringe 3 shown is illustrated. The light source in the color recognition sensor 21 emits light of a specific wavelength into the solution inside the syringe 3 through a detection window. After penetrating the wall of the syringe 3, the light interacts with the solution. Substances in the solution selectively absorb or reflect light of different wavelengths, causing changes in the spectral characteristics of the reflected light. The reflected light returns through the solution and is captured by a photosensitive element through the detection window. The photosensitive element converts the light signal into an electrical signal, and the intensity and spectral distribution of the signal are directly related to the color of the solution. During endoscopic ultrasound puncture, real-time identification of the solution color inside the negative pressure syringe can assist operators in determining whether the puncture has successfully entered the target tissue, avoiding complications and improving operational safety.

[0028] For example, by setting the threshold of the color recognition sensor 21, different sample types such as red and light yellow can be automatically identified, providing objective data support for clinical decision-making and reducing misdiagnosis or misoperation caused by subjective judgment.

[0029] Depending on the actual usage requirements, the color recognition sensor 21 can be selected as either a reflective or a through-beam type.

[0030] To further reduce the assembly difficulty of the color recognition sensor 21, such as Figure 2 As shown, the mounting part 13 is provided with a mounting hole. The mounting end of the color recognition sensor 21 is screwed into the mounting hole by a thread. Thus, the mounting hole and the mounting end of the color recognition sensor 21 are precisely positioned on the mounting part 13 through the threaded engagement. During installation, by controlling the number of turns and the angle of the thread engagement, the detection end of the color recognition sensor 21 can be precisely aligned with the detection area inside the negative pressure injector, ensuring accurate light projection and reception, avoiding detection blind spots or data deviations caused by installation errors, and improving the comprehensiveness and accuracy of the detection.

[0031] like Figure 2 and Figure 3 As shown, the retaining ring includes a first half-ring 11, a second half-ring 12, and a locking mechanism 15. The first half-ring 11 is hinged to the second half-ring 12 via a pivot. The openings of the first half-ring 11 and the second half-ring 12 are connected by the locking mechanism 15. Thus, the first half-ring 11 and the second half-ring 12 are hinged via a pivot, forming an opening and closing structure similar to a clamp. During installation, the operator only needs to open the locking mechanism 15, open the retaining ring and place it on the outer wall of the negative pressure syringe, and then close it through the locking mechanism 15 to quickly complete the installation; the same applies to disassembly. The entire process does not require additional tools, significantly shortening the installation and disassembly time of the device.

[0032] like Figure 3As shown, the mounting part 13 is arranged on the first half-ring 11. Therefore, concentrating the mounting part 13 on the first half-ring 11 effectively avoids interference with components such as the second half-ring 12 and the locking mechanism 15 during installation. For example, when opening and closing the retaining ring, the improper position of the mounting part 13 will not affect the normal movement of the retaining ring, ensuring smooth and unobstructed installation and disassembly of the entire device and improving efficiency.

[0033] The locking mechanism 15 can be designed with a quick-release structure. Preferably, such as... Figure 2 As shown, the locking mechanism 15 includes a connecting shaft 151, a compression spring 152, and a handle 153. One end of the connecting shaft 151 is hinged to the first half-ring 11. The other end of the connecting shaft 151 is hinged to the handle 153. A slot is provided at the opening of the second half-ring 12. The compression spring 152 is sleeved on the connecting shaft 151 and is located between the first half-ring 11 and the second half-ring 12.

[0034] The compression spring 152 is used to automatically adjust the tightening force of the retaining ring according to the outer diameter of the negative pressure syringe. When the retaining ring is closed, the spring is compressed to generate elastic force, causing the first half-ring 11 and the second half-ring 12 to fit tightly against the outer wall of the syringe. This ensures sufficient clamping force to prevent the device from slipping while avoiding damage to the syringe due to excessive pressure. When using syringes of different sizes alternately, no manual adjustment is required; the spring automatically adapts and maintains a stable fixing effect at all times.

[0035] In the process of solution color recognition, differences in background color can greatly affect the color recognition sensor 21's judgment of the true color of the solution. To improve this situation, such as... Figure 4 As shown, a liner 16 is provided on the inner wall of the second semi-ring 12. The liner 16 is configured to provide a background color for solution color recognition on the opposite side of the detection end of the color recognition sensor 21.

[0036] The liner 16, serving as a fixed background color, eliminates interference from the external environment of the syringe 3, allowing the color recognition sensor 21 to analyze only the solution itself. For example, when detecting transparent or light-colored solutions, if the background is cluttered, the sensor may mistakenly mix the background color into the detection result. However, the uniform background of the liner 16 ensures that the detection data accurately reflects the true color of the solution.

[0037] In addition, the liner 16 can be made of a low-reflection or light-absorbing material to avoid the light from being reflected multiple times between the outer wall of the syringe 3 and the background, thus forming stray light. By absorbing or weakening the reflected light through the liner 16, the light received by the color recognition sensor 21 can mainly come from the solution itself, effectively improving the accuracy of color recognition.

[0038] To further enhance the clamping stability of the retaining ring, a buffer pad is also provided on the inner wall of the retaining ring. The buffer pad fills the gap by deformation, increasing the friction between the retaining ring and the syringe 3, preventing the device from shifting due to shaking or pulling during the puncture operation, and ensuring that the color recognition sensor 21 is always in the accurate detection position.

[0039] In this embodiment of the invention, a color recognition device for a negative pressure syringe containing an endoscopic ultrasound puncture needle is used. When activated, the detection unit 2 is started, and the color recognition sensor 21 begins operation. Its light source emits light into the solution within the negative pressure syringe through the detection window of the detection chamber 14. The photosensitive element receives the light reflected back by the solution and converts the light signal into an electrical signal. During the endoscopic ultrasound puncture procedure, the color recognition sensor 21 continues to operate as the negative pressure syringe draws out the solution. The detection unit 2 converts the color signal detected by the color recognition sensor 21 into quantitative data (such as RGB values ​​and spectral data), which is transmitted in real time to an external display device or control system. Operators can visually view the solution color information on the screen and make accurate diagnoses based on clinical experience, or the system can automatically determine the solution type according to a preset threshold to assist in decision-making.

[0040] This utility model is not limited to the specific technical solutions described in the above embodiments. Besides the above embodiments, this utility model may have other implementation methods. For those skilled in the art, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A solution color recognition device for a negative pressure syringe used in an endoscopic ultrasound puncture needle, characterized in that, Includes clamping structure and detection unit; The clamping structure is installed on the outer wall of the negative pressure injector. The clamping structure includes a retaining ring with a mounting part. A detection cavity is formed between the mounting part and the side wall of the negative pressure injector. The clamping structure is configured to clamp the outer wall of the negative pressure injector using the retaining ring and to provide a detection window for the detection unit to identify the color of the solution inside the negative pressure injector using the detection cavity. The detection unit includes a color recognition sensor installed in the detection chamber, with the detection end of the color recognition sensor facing the inside of the negative pressure injector. The detection unit is configured to use a light source in the color recognition sensor to emit light into the negative pressure injector through the detection window, and to use a photosensitive element to receive the light reflected back by the solution in the negative pressure injector, converting the light signal into an electrical signal.

2. The solution color recognition device for a negative pressure syringe used for endoscopic ultrasound puncture needles according to claim 1, characterized in that, The mounting part is provided with a mounting hole, and the mounting end of the color recognition sensor is screwed into the mounting hole by a thread.

3. The solution color recognition device for a negative pressure syringe used for endoscopic ultrasound puncture needles according to claim 1, characterized in that, The retaining ring includes a first half-ring, a second half-ring, and a locking mechanism. The first half-ring is hinged to the second half-ring via a pivot, and the openings of the first half-ring and the second half-ring are connected by the locking mechanism.

4. The solution color recognition device for a negative pressure syringe used for endoscopic ultrasound puncture needles according to claim 3, characterized in that, The mounting section is located on the first half-ring.

5. The solution color recognition device for a negative pressure syringe used for endoscopic ultrasound puncture needles according to claim 3, characterized in that, The locking mechanism includes a connecting shaft, a compression spring, and a handle. One end of the connecting shaft is hinged to the first half-ring, and the other end of the connecting shaft is hinged to the handle. The opening of the second half-ring has a slot. The compression spring is sleeved on the connecting shaft and located between the first and second half-rings.

6. The solution color recognition device for a negative pressure syringe used for endoscopic ultrasound puncture needles according to claim 4, characterized in that, A liner is provided on the inner wall of the second semi-ring, the liner being configured to provide a background color for solution color recognition on the opposite side of the detection end of the color recognition sensor.

7. The solution color recognition device for a negative pressure syringe used for endoscopic ultrasound puncture needles according to claim 1, characterized in that, A buffer pad is provided on the inner wall of the retaining ring.

8. The solution color recognition device for a negative pressure syringe used for endoscopic ultrasound puncture needles according to claim 1, characterized in that, The color recognition sensor is either reflective or through-beam.

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