Photographable dialysis deep vein catheter

Abstract

The application discloses a photographable dialysis deep vein catheter, which comprises a cannula tube body, a soft tip head arranged at the front of the cannula tube body, and a first branch pipe and a second branch pipe connected to the rear end of the cannula tube body through a three-way pipe; a tail of the first branch pipe is provided with a plug connecting seat, and a zero-pressure component for maintaining a zero-pressure state in the cannula tube body is arranged in the plug connecting seat; and a miniature camera is arranged at the front end of the soft tip head. The application is visually assisted by the miniature camera, so that a doctor can accurately position a blood vessel, the possibility of mistakenly wearing the blood vessel and damaging the surrounding tissue is greatly reduced, the operation risk and the incidence of complications are reduced, and the dialysis treatment safety is effectively improved. The zero-pressure component makes the pressure of the puncture process on the blood vessel of a patient close to zero during puncture, can intuitively present the blood return condition, the doctor can accurately judge the blood flow size according to the blood return speed, color and continuity and the like, and the puncture success rate is improved.

Description

Technical Field

[0001] This application belongs to the field of medical device technology, specifically relating to a camera-capable dialysis deep vein catheter. Background Technology

[0002] Traditional dialysis central venous catheters have significant drawbacks. During the puncture procedure, doctors rely solely on experience and touch. Furthermore, routine catheter insertion cannot accurately assess blood flow, and repeated adjustments cause pain and discomfort for the patient, affecting the success rate of placement. In addition, repeated punctures increase the risk of infection, posing a continuous threat to the health of long-term dialysis patients.

[0003] Patent CN209004832U discloses a dialysis catheter. The catheter's tip is a soft-tipped design, minimizing the risk of blood vessel wall damage and phlebitis. The catheter is made of medical-grade polyurethane, which is highly antibacterial, does not breed bacteria, and is not degraded by microorganisms. It also has good biocompatibility, preventing thrombosis. Furthermore, it is temperature-sensitive, softening at body temperature to reduce irritation to blood vessels. While the soft-tipped tip in the aforementioned patent reduces the risk of vascular injury, without effective visual assistance, doctors relying solely on experience and touch for puncture can still easily puncture blood vessels or damage surrounding tissues, potentially leading to complications such as bleeding and hematoma. Utility Model Content

[0004] This application provides a camera-enabled dialysis deep vein catheter to solve the technical problem of accidental puncture of blood vessels and damage to surrounding tissues due to lack of visual assistance.

[0005] To solve the above-mentioned technical problems, one technical solution adopted in this application is: a cameraable dialysis deep vein catheter, including a catheter body, a flexible tip at the front of the catheter body, and a first branch and a second branch connected to the rear of the catheter body through a three-way tube; a plug connector is provided at the tail of the first branch, and a zero-pressure component is provided in the plug connector to maintain the catheter body in a zero-pressure state; a miniature camera is provided at the front end of the flexible tip.

[0006] Furthermore, a slot is provided on one side of the end of the flexible tip, and a miniature camera is installed in the slot. The surface of the slot is covered with a transparent protective cover.

[0007] Furthermore, a signal line is connected to the side wall of the cannula. One end of the signal line is connected to a miniature camera, and the other end passes through a T-shaped tube and connects to a plug connector.

[0008] Furthermore, the zero-pressure component includes a pressure buffer pad, a switching valve assembly, and a triaxial miniature pressure sensor; the pressure buffer pad is located at the connection between the plug connector and the first branch pipe, the triaxial miniature pressure sensor is located on the side of the pressure buffer pad closer to the first branch pipe, and the switching valve assembly is located at the end connected to the plug connector.

[0009] Furthermore, it also includes a control terminal, which is connected to the signal line in the end seat and the triaxial miniature pressure sensor via a first connecting line, a switching valve assembly, and a first connecting line.

[0010] Furthermore, it also includes a video adjustment component for adjusting the rotation angle and focal length of the miniature camera, the video adjustment component being connected to the control terminal. The beneficial effects of this application are as follows: By utilizing the visual assistance of a miniature camera, doctors can accurately locate blood vessels, significantly reducing the possibility of accidental puncture of blood vessels and damage to surrounding tissues, thereby reducing surgical risks and the incidence of complications, and effectively improving the safety of dialysis treatment. The zero-pressure component ensures that the pressure on the patient's blood vessel during puncture is close to zero, allowing for a direct visualization of blood return. Based on the speed, color, and continuity of blood return, doctors can accurately determine the blood flow rate, improving the success rate of puncture. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of an embodiment of the cameraable dialysis deep vein catheter of this application; Figure 2 yes Figure 1 A schematic diagram of the structure of region A in the diagram; Figure 3 yes Figure 1 A structural diagram of region B in the diagram; Figure 4 yes Figure 1 A schematic diagram of the structure of the plug connector in one embodiment; Figure 5 yes Figure 1 A structural block diagram of one embodiment of the control terminal. Detailed Implementation

[0012] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0013] like Figures 1-5As shown, this application provides a camera-enabled dialysis deep vein catheter, including a cannula body 1, a flexible tip 2 at the front of the cannula body 1, and a first branch tube 4 and a second branch tube 5 connected to the rear end of the cannula body 1 via a three-way connector 3. The tail end of the first branch tube 4 is equipped with a plug connector 6, which contains a zero-pressure component 8 for maintaining a zero-pressure state within the cannula body 1. A miniature camera 7 is located at the front end of the flexible tip 2. The miniature camera 7 in this design can transmit video signals during puncture, thereby capturing high-definition images of the puncture site in real time and transmitting them to an external monitor. This allows doctors to clearly observe the location, direction, and surrounding tissue conditions of the blood vessels, achieving precise puncture and effectively avoiding the risk of accidental puncture of blood vessels and damage to surrounding tissues. Simultaneously, the zero-pressure component 8 can detect and adjust the pressure in the tubing during puncture to ensure that the pressure on the patient's blood vessels during the puncture process approaches zero. The first branch tube 4 is used to detect the tubing pressure and connect to an infusion pump or dialysis machine, while the second branch tube 5 can connect to other infusion tubing.

[0014] A slot 21 is provided on one side of the end of the flexible tip 2, and a miniature camera 7 is installed in the slot 21. A transparent cover 22 is provided on the surface of the slot 21. In this design, the slot 21 is used to install the miniature camera 7, and the transparent cover 22, which is smoothly integrated with the surface of the flexible tip 2, can cover the entire slot 21, preventing blood from corroding the miniature camera 7. At the same time, it ensures that the miniature camera 7 can capture real-time images of the puncture.

[0015] A signal line 72 is connected to the side wall of the cannula body 1. One end of the signal line 72 is connected to the miniature camera 7, and the other end passes through the tee tube 3 and connects to the plug connector 6. The cannula body 1 in the above design is made of medical-grade polyurethane material, thus possessing a certain degree of flexibility and being able to adapt to the bending and deformation of blood vessels within the body. The signal line 72 can be attached to the inner side wall surface of the cannula body 1 or disposed within the inner side wall, thereby ensuring a stable connection to the miniature camera 7 and transmitting video signals.

[0016] The zero-pressure component 8 includes a pressure buffer pad 81, a switching valve assembly 82, and a triaxial miniature pressure sensor 83. The pressure buffer pad 81 is located at the connection between the plug connector 6 and the first branch tube 4. The triaxial miniature pressure sensor 83 is located on the side of the pressure buffer pad 81 closer to the first branch tube 4. The switching valve assembly 82 is located at the end of the plug connector 6. The plug connector 6 in the above design can be connected to an external infusion pump or infusion port. An infusion pump or gravity infusion will generate positive pressure at the needle tip, which may push open the blood vessel wall ("top pressure effect"), increasing the risk of penetration. Closing the valve in the switching valve assembly 82 eliminates the external positive pressure, allowing the needle tip to be affected only by the natural pressure within the blood vessel. Blood can then freely return to the transparent needle tube solely due to the natural pressure within the blood vessel, reducing human interference and making it easier to visually observe the blood return.

[0017] This application also includes a control terminal 9 and a video adjustment component 71. The control terminal 9 is connected to the signal line 72 in the end cap and the triaxial miniature pressure sensor 83 via a first connecting line 91. The control terminal 9 in the above design can be a computer or other terminal. The first connecting line 91 connects various components, thereby collecting parameter signals and controlling each component. In one embodiment, the end of the plug connector 6 has a connection port 61 on its outer side. This connection port allows connection to the first connecting line, enabling the pressure signal and video signal from the pressure sensor to be transmitted to the control terminal 9. The display of the control terminal 9 can show the pressure value and video image, and control the opening and closing of the switching valve component 82 according to a preset program.

[0018] The video adjustment component 71 is used to adjust the rotation angle and focal length of the miniature camera 7, and is connected to the control terminal 9. The video adjustment component 71 in the above design includes directional buttons and a focal length adjustment button, thereby controlling the shooting direction and focal length of the miniature camera 7.

[0019] In its specific operation, when the doctor begins the puncture procedure, the direction and focus of the miniature camera 7 are adjusted in real time via the video adjustment component 71 based on the image captured by the front-end miniature camera 7, ensuring that the camera 7 is directly facing the vein and that the image is clear. The zero-pressure component 8 at the end of the second branch tube 5 monitors pressure changes in real time during the puncture. During puncture, the triaxial miniature pressure sensor 83 detects a positive pressure value and transmits it to the control terminal 9. To ensure the puncture needle is in a zero-pressure state, the control terminal 9 closes the switching valve component 82 according to a preset program, thereby pausing the operation of the infusion pump or dialysis machine. This prevents the positive pressure generated by the fluid infusion from interfering with the natural pressure within the blood vessel, completely eliminating external positive pressure and bringing it to zero, so that the needle tip is only affected by the natural pressure within the blood vessel. The doctor determines the location and direction of the blood vessel based on the image displayed on the monitor. During catheter advancement, the doctor can also observe blood return by connecting to the zero-pressure component 8, judging the blood flow rate based on the speed, color, and continuity of the blood return. Once the catheter is successfully inserted into the blood vessel, it is advanced to the appropriate depth. Meanwhile, doctors can adjust dialysis parameters, such as blood pump speed and ultrafiltration rate, based on the blood flow assessment. Once the catheter is secured, dialysis treatment can begin.

[0020] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A camera-able dialysis deep venous catheter, characterized in that, include: The cannula has a flexible tip at the front and a first branch pipe and a second branch pipe connected to the rear end of the cannula via a T-connector. The tail end of the first branch pipe is provided with a plug connector, and the plug connector is provided with a zero-pressure component for maintaining the cannula in a zero-pressure state. The front end of the flexible tip is provided with a miniature camera.

2. The camera-able dialysis deep vein catheter according to claim 1, characterized in that, The flexible tip has a slot on one side, and the miniature camera is installed in the slot. The surface of the slot is covered with a transparent cover.

3. The camera-able dialysis deep vein catheter according to claim 2, characterized in that, The side wall of the cannula is connected to a signal line. One end of the signal line is connected to the miniature camera, and the other end of the signal line passes through the tee tube and is connected to the plug connector.

4. A camera-able dialysis deep vein catheter according to claim 3, characterized in that, The zero-pressure component includes a pressure buffer pad, a switching valve assembly, and a triaxial miniature pressure sensor; the pressure buffer pad is located at the connection between the plug connector and the first branch pipe, the triaxial miniature pressure sensor is located on the side of the pressure buffer pad closer to the first branch pipe, and the switching valve assembly is located at the end of the plug connector.

5. A camera-able dialysis deep vein catheter according to claim 4, characterized in that, It also includes a control terminal, which is connected to the signal line in the plug connector, the switching valve assembly, and the triaxial miniature pressure sensor via a first connecting line.

6. A camera-able dialysis deep vein catheter according to claim 5, characterized in that, It also includes a video adjustment component for adjusting the rotation angle and focal length of the miniature camera, the video adjustment component being connected to the control terminal.

Images