Medical Luer pressure sensor with replaceable contact head

Abstract

The utility model discloses a medical Luer pressure sensor with a replaceable contact head, which comprises a Luer taper, a thread groove is arranged on one side of the Luer taper, a tube cavity is arranged on one side of the Luer taper close to the thread groove, and a pressure sensor used for sealing the tube cavity is arranged in the tube cavity. The side, away from the threaded groove, of the Luer connector is detachably connected with a processor used for displaying the pressure value, and the pressure sensor is electrically connected with the processor. Part of liquid in the external pipeline flows into the pipe cavity, due to the fact that the interior of the pipe cavity is sealed, the pressure intensity of the liquid acts on the pressure sensor in the pipe cavity, an electric signal of the pressure sensor is transmitted to the processor, the processor displays a pressure value detected by the pressure sensor, and the processor is detachably connected with the Luer connector. Therefore, after the pressure detection work in one operation is finished, only the Luer taper needs to be replaced, the number of replaced parts is small, and the cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of Luer connectors, and more particularly to a medical Luer pressure sensor with a replaceable contact head. Background Technology

[0002] In clinical treatment, certain scenarios require monitoring the pressure of the tubing, such as arterial and venous pressure measurement or thrombus aspiration. Specifically, during thrombus aspiration, controlling the negative pressure of the syringe is extremely important. Excessive negative pressure can not only damage blood vessels but also affect the treatment outcome, thus necessitating monitoring the pressure during the treatment process.

[0003] Currently, pressure testing in clinical trials is primarily conducted using pressure measuring equipment. Pressure detection mainly employs disposable pressure sensors, which have the following structure: the sensor's tubing interface has male and female connectors (at both ends), and is connected in series with the infusion tubing during use. The sensor also has an electronic lead that needs to be connected to a display device.

[0004] However, the aforementioned disposable pressure sensors need to be completely replaced after use. Since many parts need to be replaced, frequent replacements not only increase costs but may also lead to material waste. Utility Model Content

[0005] In order to solve at least one of the technical problems mentioned in the background art, the purpose of this utility model is to provide a medical Luer pressure sensor with a replaceable contact head, which only requires replacing the Luer connector, is easy to replace, and reduces costs.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a medical Luer pressure sensor with replaceable contact head, including a Luer connector, a threaded groove on one side of the Luer connector, a cavity on the side of the Luer connector near the threaded groove, a pressure sensor for sealing the cavity is provided in the cavity, and a processor for displaying pressure values ​​is detachably connected to the side of the Luer connector away from the threaded groove, and the pressure sensor is electrically connected to the processor.

[0007] Furthermore, the processor includes a housing with a mating hole for insertion of the Luer connector on the side of the housing near the Luer connector.

[0008] Furthermore, at least one limiting strip is fixedly installed axially on the periphery of the Luer joint, and a groove adapted to the limiting strip is provided on the inner wall of the mating hole.

[0009] Furthermore, the limiting strip is a semi-cylinder, and the inner wall of the slot is arc-shaped.

[0010] Furthermore, there are two limiting strips.

[0011] Furthermore, the pressure sensor is electrically connected to the processor via a connector.

[0012] Furthermore, the connector includes a plug and a socket, the plug being fixedly mounted on one of the Luer connectors or the processor, and the socket being mounted on the other.

[0013] Furthermore, the processor also includes a control board, display screen, buttons, and button battery located within the housing.

[0014] Furthermore, a front cover is provided on the side of the housing away from the Luer connector.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: Part of the liquid in the external pipe flows into the pipe cavity. Because the pipe cavity is sealed, the liquid pressure acts on the pressure sensor inside the pipe cavity and is detected by the pressure sensor. Since the pressure sensor is electrically connected to the processor, the pressure sensor's electrical signal is transmitted to the processor, which displays the pressure value detected by the pressure sensor. The processor and the Luer connector are detachably connected. Therefore, after the pressure detection work in a single operation is completed, the liquid in the external pipe only remains in the Luer connector, thus preventing contamination of the processor. Only the Luer connector needs to be replaced, requiring fewer replacement parts. This not only facilitates one-time replacement but also allows the processor part to be reused, saving costs and ensuring economic efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 3 This is a cross-sectional view of the Luer connector of this utility model.

[0019] In the diagram: 1. Luer connector; 11. Threaded groove; 12. Lumen; 13. Limiting strip; 2. Pressure sensor; 3. Processor; 31. Housing; 32. Connecting hole; 33. Slot; 34. Control board; 35. Display screen; 36. Button; 37. Front cover; 4. Connector; 41. Plug; 42. Socket. Detailed Implementation

[0020] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] In clinical treatment, syringes are one of the key tools for intravenous injection or aspiration. Especially in treatments like thrombectomy, controlling the negative pressure of the syringe is extremely important; excessively high negative pressure can damage blood vessels and affect treatment efficacy. Current medical devices primarily rely on built-in pressure sensors for monitoring this issue. However, most of these devices are disposable, making maintenance or replacement difficult after use. Frequent replacements not only increase costs but also lead to environmental waste and potential infection risks.

[0022] The Luer connector is already widely used for catheter transfer and is produced in large quantities as a single component, resulting in low manufacturing costs. Therefore, this application proposes a design concept that allows for pressure testing at different times by simply replacing the Luer connector after each test. In other words, only the Luer connector needs to be replaced to achieve equipment reuse, thereby reducing resource consumption without affecting the performance of the treatment equipment.

[0023] To achieve the above technical concepts, please refer to [link / reference needed]. Figure 1 and Figure 2 This embodiment provides a medical Luer pressure sensor with a replaceable contact head, including a Luer connector 1, on one side of which a threaded groove 11 is provided. The external pipe connector end connected to the Luer connector 1 has an external thread, which is connected to the external thread at the external pipe connector through the internal thread of the threaded groove 11, so that the pipe is tightly fitted to the Luer connector 1, forming a good sealing effect.

[0024] Please see Figure 1 and Figure 3 The Luer connector 1 has a cavity 12 on the side near the threaded groove 11. A pressure sensor 2 is provided on the bottom wall of the cavity 12. The pressure sensor 2 seals one end of the cavity 12. A processor 3 for displaying pressure values ​​is detachably connected to the side of the Luer connector 1 away from the threaded groove 11. The pressure sensor 2 is electrically connected to the processor 3.

[0025] Part of the liquid in the external pipe flows into the cavity 12, which is sealed. The liquid pressure acts on the pressure sensor 2 inside the cavity 12 and is detected by the pressure sensor 2. Since the pressure sensor 2 is electrically connected to the processor 3, the electrical signal of the pressure sensor 2 is transmitted to the processor 3. The processor 3 displays the pressure value detected by the pressure sensor 2. The processor 3 and the Luer connector 1 are detachably connected. After a surgical test is completed, since the liquid in the external pipe only stays in the Luer connector 1, only the Luer connector 1 needs to be replaced, which is convenient for one-time replacement. The processor 3 part can be reused, ensuring economy.

[0026] Since the liquid pressure only acts on Luer connector 1, and Luer connector 1 is connected to an external pipeline, the processor 3 located on Luer connector 1 only needs to be electrically connected to the pressure sensor 2 inside Luer connector 1. To facilitate the connection between Luer connector 1 and processor 3, processor 3 includes a housing 31, and the housing 31 has a mating hole 32 for inserting Luer connector 1 on the side near Luer connector 1.

[0027] This facilitates the installation of processor 3 on Luer connector 1, and also facilitates the installation and removal of Luer connector 1 and processor 3.

[0028] Please see Figure 2 and Figure 3 The pressure sensor 2 and the processor 3 are connected by a connector 4, which provides electrical connection between them. The connector 4 includes a plug 41 and a socket 42. The plug 41 is fixedly mounted on the Luer connector 1, and the socket 42 is mounted on the processor 3.

[0029] After the Luer connector 1 is inserted into the mating hole 32, the plug 41 on one side of the Luer connector 1 inserted into the mating hole 32 will be inserted into the socket 42 inside the mating hole 32, thereby completing the power connection between the processor 3 and the pressure sensor 2, so that the pressure value detected by the pressure sensor 2 is transmitted to the processor 3 for display.

[0030] Because the mating hole 32 is a blind hole, after the Luer connector 1 is inserted into the mating hole 32, the plug 41 and the socket 42 will need to be manually adjusted repeatedly to be accurately inserted. The material of the plug 41 is relatively soft, and if it is not aligned and the pushing force used is too large, it is easy to cause the plug 41 to bend and damage the connection.

[0031] Please see Figure 1 and Figure 3 To solve the aforementioned technical problems, two limiting strips 13 are fixedly installed axially on the side of the Luer connector. A groove 33, adapted to the limiting strips 13, is provided on the inner wall of the mating hole 32. When the plug 41 is inserted into the socket 42, the limiting strips 13 are also located within the groove 33.

[0032] During the docking process of Luer connector 1, first align the limiting strip 13 on Luer connector 1 with the slot 33, and then insert Luer connector 1 into the docking hole 32. This ensures that the angle at which Luer connector 1 is inserted into processor 3 is always a fixed value, so that the docking work of plug 41 and socket 42 can be easily completed without having to adjust the insertion angle of plug 41 and socket 42 multiple times.

[0033] Furthermore, because the Luer connector 1 is cylindrical, if the processor 3 is subjected to external force after the Luer connector 1 is inserted into the mating hole 32, the processor 3 and the Luer connector 1 will tend to rotate relative to each other, which will create a torsional torque at the plug 41, easily damaging the plug 41. However, the interaction between the limiting strip 13 and the slot 33 can limit the relative rotation between the Luer connector 1 and the processor 3, protecting the connector 4.

[0034] The limiting strip 13 is a semi-cylinder, and the inner wall of the slot 33 is arc-shaped. The semi-cylinder limiting strip 13 is integrally formed with the Luer joint 1, and the semi-cylinder shape can release the internal stress during the forming of the Luer joint 1.

[0035] Please see Figure 1 and Figure 2 The processor 3 also includes a control board 34, a display screen 35, buttons 36 and a button battery located inside the housing 31. A front cover 37 is provided on the side of the housing 31 away from the Luer connector 1.

[0036] A button battery powers the control system. The control board 34 processes the pressure information and displays it on the display screen 35. Button 36 is used to turn the measurement on and off. The front cover 37 on one side of the housing 31 has vents for sterilization ventilation. A waterproof and breathable membrane is designed below the vents for waterproofing.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A medical Luer pressure sensor with replaceable contact head, comprising a Luer connector (1), characterized in that, The Luer connector (1) has a threaded groove (11) on one side, and a cavity (12) is provided on the side of the Luer connector (1) near the threaded groove (11). A pressure sensor (2) for sealing the cavity is provided in the cavity (12). A processor (3) for displaying pressure values ​​is detachably connected to the side of the Luer connector (1) away from the threaded groove (11). The pressure sensor (2) is electrically connected to the processor (3).

2. The medical Luer pressure sensor with replaceable contact head according to claim 1, characterized in that, The processor (3) includes a housing (31) with a mating hole (32) for inserting the Luer connector (1) on the side of the housing (31) near the Luer connector (1).

3. The medical Luer pressure sensor with replaceable contact head according to claim 2, characterized in that, At least one limiting strip (13) is fixedly installed on the circumferential side of the Luer joint (1) along the axial direction, and a slot (33) adapted to the limiting strip (13) is opened on the inner wall of the mating hole (32).

4. The medical Luer pressure sensor with replaceable contact head according to claim 3, characterized in that, The limiting strip (13) is a semi-cylinder, and the inner wall of the slot (33) is arc-shaped.

5. The medical Luer pressure sensor with replaceable contact head according to claim 3, characterized in that, There are two limiting strips (13).

6. The medical Luer pressure sensor with replaceable contact head according to claim 1, characterized in that, The pressure sensor (2) and the processor (3) are electrically connected via a connector (4).

7. The medical Luer pressure sensor with replaceable contact head according to claim 6, characterized in that, The connector (4) includes a plug (41) and a socket (42), the plug (41) being fixedly mounted on one of the Luer connector (1) or the processor (3), and the socket (42) being mounted on the other.

8. The medical Luer pressure sensor with replaceable contact head according to claim 1, characterized in that, The processor (3) also includes a control board (34), a display screen (35), buttons (36) and a button battery located in the housing (31).

9. The medical Luer pressure sensor with replaceable contact head according to claim 8, characterized in that, The outer casing (31) is provided with a front cover (37) on the side away from the Luer joint (1).

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