Vascular intervention catheter sheath integrating multiple functions
By integrating a camera, lighting, and saline flushing function, the vascular interventional catheter sheath solves the problems of insufficient visualization and inaccurate drug delivery in vascular interventional surgery, achieving efficient and precise treatment in vascular interventional surgery.
Patent Information
- Application Number
- CN202511448880.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-11
- Publication Date
- 2025-11-18
AI Technical Summary
Existing catheter sheaths have limitations in visualizing intravascular lesions and controlling drug delivery during vascular interventional procedures, which affect diagnostic and treatment outcomes.
A multifunctional vascular interventional catheter sheath was designed, which combines a camera, lighting lamp, saline flushing catheter and balloon to achieve real-time imaging, cleaning, drug delivery and aspiration of the vascular lumen, thereby enhancing real-time information feedback and precision treatment during surgery.
It improves the accuracy and safety of surgery, provides a clearer field of vision, ensures high drug concentration at the lesion site, promptly removes lesion debris, dilates narrowed blood vessels, and supports precise vascular interventional surgery.
Smart Images
Figure CN120960600A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of medical device technology, and in particular to an integrated multifunctional vascular interventional catheter sheath. Background Technology
[0002] Interventional vascular surgery is one of the mainstream surgical methods for treating arterial occlusive diseases. During the procedure, a guidewire, catheter sheath, and other surgical instruments are inserted into the blood vessel lumen under the guidance of X-ray, ultrasound, or other imaging equipment (the guidewire is located inside the catheter sheath) through percutaneous puncture of the blood vessel. This allows for the diagnosis and treatment of vascular lesions and is a minimally invasive treatment method.
[0003] In vascular interventional surgery, the catheter sheath is the instrument used to establish surgical access. After percutaneous puncture, a puncture needle is inserted into the blood vessel, a guide wire is placed, and then the catheter sheath is advanced along the guide wire to approach the lesion site. Other instruments, contrast agents, or therapeutic instruments are delivered through the catheter sheath to the lesion site. At present, although the catheter sheath is widely used in vascular interventional surgery, it still has the following technical disadvantages due to its structure. (1) Insufficient direct visualization of intravascular lesions during the operation: Current technology mainly relies on indirect, single-plane imaging methods such as DSA (Digital Subtraction Angiography) for observation, lacking direct visual feedback on intravascular lesions, which may have some adverse effects on diagnosis and treatment. (2) Low controllability of short-term drug delivery: At present, the drug delivery methods in vascular interventional surgery include systemic drug delivery and local drug balloon or stent delivery. Drugs entering the bloodstream pose a risk of systemic side effects, the drug concentration at the lesion site is difficult to reach the optimal level, and the drug exists for a long time, making it difficult to administer drugs in a short time during the operation. Summary of the Invention
[0004] To overcome the shortcomings of existing catheter sheaths due to structural and functional limitations, as described in the background art, this invention provides an integrated multifunctional vascular interventional catheter sheath that, under the action of related structures, can easily coordinate with other devices to complete tasks such as imaging, illumination, gas or liquid injection, and aspiration of contents. This enables surgeons to receive richer and more real-time intraoperative information during vascular interventional surgery, and facilitates drug administration and lesion removal, better intraoperative decision-making, and more diverse treatments.
[0005] The technical solution adopted by this invention to solve its technical problem is: An integrated multifunctional vascular interventional catheter sheath includes a sheath body and a balloon. The sheath body has a hollow internal structure with a hollow tube inside. The hollow portion between the outer side of the hollow tube and the inner side of the sheath body serves as an installation cavity. One upper end of the sheath body has a guide tube communicating with the inner side of the catheter sheath body. A first camera catheter, a lighting catheter, a first saline flushing catheter, and a first spare catheter are vertically fixedly installed within one end of the installation cavity. A second camera catheter, a second saline flushing catheter, and a second spare catheter are vertically fixedly installed within the other end of the installation cavity. The first camera catheter, the lighting catheter, and the first... The lower ends of the saline flushing catheter, the first spare catheter, the second camera catheter, the second saline flushing catheter, the second spare catheter, the hollow tube, and the sheath body are interconnected. The upper parts of the first camera catheter, the second camera catheter, the first saline flushing catheter, the second saline flushing catheter, the first spare catheter, the second spare catheter, and the lighting catheter are respectively located outside the upper end of the guide tube. A balloon control tube is fixedly installed on the other side of the sheath body. There is a fixing hole at the lower end and the upper end of the balloon. The fixing hole on the lower side of the balloon is fixedly installed on the outside of the sheath body, and the fixing hole on the upper side of the balloon is fixedly installed on the outside of the lower end of the sheath body and the balloon control tube.
[0006] Furthermore, when the balloon is not inflated or filled with water, its outer diameter is smaller than the outer diameter of the lower end of the sheath body.
[0007] Furthermore, the upper and lower sides of the cavity tube and the sheath body are in a sealed and isolated structure.
[0008] Furthermore, the sheath body is bendable at its position inside the balloon.
[0009] Furthermore, the balloon is made of medical-grade silicone or latex.
[0010] Furthermore, the sheath body, hollow tube, guide tube, balloon control tube, first camera catheter, second camera catheter, first saline flushing catheter, second saline flushing catheter, first spare catheter, second spare catheter, and lighting catheter are made of polytetrafluoroethylene or high-density polyethylene.
[0011] Furthermore, the lower outer side of the sheath body and the balloon control tube has a rounded transition structure.
[0012] Compared with existing technologies, the advantages of this invention are as follows: This invention not only has the functions of ordinary catheter sheaths for inserting guidewires and other surgical instruments, but can also be used in conjunction with cameras, lighting, flushing, aspiration and other equipment. The camera and lighting functions can image the intravascular cavity in real time during the operation, improving the accuracy of the operation. The function of spraying gas or liquid can effectively remove blood flow interference and provide a clearer field of view for video imaging. It can also spray drugs and administer them at any time during the operation. Administering drugs before blood flow is restored ensures a high local drug concentration and reduces drug entry into the blood. The function of aspirating contents can promptly remove lesion fragments and sprayed drugs generated during the opening of arterial occlusive diseases. The balloon can dilate narrowed blood vessels or block surgical sites, providing favorable technical support for precise vascular interventional surgery. Attached Figure Description
[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0014] Figure 1 This is a side view of the overall structure of the present invention.
[0015] Figure 2 This is a top view of the structure of the present invention. Detailed Implementation
[0016] Figure 1 , 2As shown, the integrated multifunctional vascular interventional catheter sheath includes a sheath body 1 and a balloon 2. The sheath body 1 has a hollow internal structure, with a hollow tube 3 in the middle of the inner part of the sheath body 1. The hollow portion between the outer side of the hollow tube 3 and the inner side of the sheath body 1 serves as an installation cavity 4. The upper left end of the sheath body has a guide tube 101 that communicates with the inner side of the catheter sheath body. Four first camera catheters 102, a lighting catheter 103, a first saline flushing catheter 104, and a first spare catheter 105 are vertically fixedly installed in the left end of the installation cavity. Three second camera catheters 106, a second saline flushing catheter 107, and a second spare catheter 108 are vertically fixedly installed in the right end of the installation cavity. The lower side of the first camera catheter 102, lighting catheter 103, first saline flushing catheter 104, and first spare catheter 105, and the hollow tube 3 and sheath body are also included. The lower left ends of the tubes 1 and 1 are interconnected. The lower right ends of the second camera catheter 106, the second saline flushing catheter 107, the second spare catheter 108, the hollow tube 3, and the sheath body 1 are interconnected. The upper parts of the first camera catheter 102, the second camera catheter 106, the first saline flushing catheter 104, the second saline flushing catheter 107, the first spare catheter 105, the second spare catheter 108, and the lighting catheter 103 are located outside the upper end of the guide tube 101. A hollow balloon control tube 5 is fixedly installed from top to bottom on the right outer end of the sheath body 1. The lower end of the balloon control tube 5 is located at two-thirds of the outer side of the sheath body 1. There is a fixing hole at the lower end and the upper end of the balloon 2. The lower fixing hole of the balloon 2 is sealed and fixedly installed on the outside of the sheath body 1. The upper fixing hole of the balloon 2 is sealed and fixedly installed on the outside of the lower end of the sheath body 1 and the balloon control tube 5.
[0017] Figure 1 , 2 As shown, the outer diameter of balloon 2 when it is not inflated or inflated with water is smaller than the lower outer diameter of the sheath body 1. The hollow tube 3 and the sheath body 1 are sealed and isolated on the upper and lower sides. The sheath body 1, located inside balloon 2, can be bent at a certain angle (to facilitate adjustment of its position within a certain angle when inserted into the patient). Balloon 2 is made of medical-grade silicone or latex. The sheath body 1, hollow tube 3, guide tube 101, balloon control tube 5, first camera catheter 102, second camera catheter 106, first saline flushing catheter 104, second saline flushing catheter 107, first spare catheter 105, second spare catheter 108, and illumination catheter 103 are made of polytetrafluoroethylene (PTFE) or high-density polyethylene (HDPE). The lower outer ends of the sheath body 1 and balloon control tube 5 have a rounded transition structure.
[0018] Figure 1 , 2As shown, this invention has the function of inserting guidewires and other surgical instruments into a conventional catheter sheath. During surgery, the guidewire and catheter sheath body 1 are inserted into the blood vessel lumen through percutaneous puncture under the guidance of X-ray, ultrasound, or other imaging equipment for the diagnosis and treatment of vascular lesions (the guidewire is located inside the catheter sheath body 1). This invention can also be used in conjunction with cameras, lighting, flushing, and aspiration devices. Specifically, a miniature camera can be inserted into the first camera catheter 102 or the second camera catheter 106 to image the intravascular lumen at the surgical site, improving surgical accuracy. A miniature lighting lamp can be inserted into the lighting lamp catheter 102, making the images captured by the camera clearer and ensuring... The camera and lighting functions are available in real-time during the operation. A saline tubing (e.g., injecting saline or spraying gas) can be inserted into the first saline tubing 104 or the second saline tubing 107 to clean the surgical site, effectively removing blood flow interference, providing a clearer view for video imaging, and can also spray medication, allowing for intraoperative drug administration. Administration before blood flow is restored ensures a high local drug concentration and reduces the chance of drug entering the bloodstream. After the air inlet of the suction device (e.g., a negative pressure suction machine or a bulb suction device) enters the first spare tubing 105 or the second spare tubing 108, the suction device can promptly remove lesion debris and sprayed medication generated during the opening of arterial occlusive disease vessels, ensuring a smooth surgical procedure. During the procedure, the front side of the water outlet or air outlet of the inflation device or flushing device is placed on the outer side of the upper end of the balloon control tube 5, which allows compressed air or liquid to be filled into the balloon 2. In this way, the volume of the balloon 2 will increase, and the balloon can expand narrowed blood vessels or block the surgical site (the greater the air or liquid pressure, the greater the degree of balloon expansion), which provides favorable technical support for precise vascular interventional surgery.
[0019] Those skilled in the art should understand that although this specification describes embodiments, the embodiments do not necessarily contain only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art. Therefore, the scope of protection of this application is defined by the claims.
Claims
1. An integrated multifunctional vascular interventional catheter sheath, comprising a sheath body and a balloon, characterized in that, The sheath body has a hollow internal structure with a cavity tube inside. The hollow portion between the outer side of the cavity tube and the inner side of the sheath body serves as the mounting cavity. One side of the upper end of the sheath body has a guide tube communicating with the inner side of the catheter sheath body. A first camera guide tube, a lighting guide tube, a first saline flushing guide tube, and a first spare guide tube are vertically fixedly installed within one end of the mounting cavity. A second camera guide tube, a second saline flushing guide tube, and a second spare guide tube are vertically fixedly installed within the other end of the mounting cavity. The first camera guide tube, lighting guide tube, first saline flushing guide tube, and first spare guide tube... The lower ends of the catheter, the second camera catheter, the second saline flushing catheter, the second spare catheter, the hollow tube, and the sheath body are interconnected; the upper parts of the first camera catheter, the second camera catheter, the first saline flushing catheter, the second saline flushing catheter, the first spare catheter, the second spare catheter, and the lighting catheter are respectively located outside the upper end of the guide tube; a balloon control tube is fixedly installed on the other side of the sheath body, and there is a fixing hole at the lower end and the upper end of the balloon, respectively. The fixing hole on the lower side of the balloon is fixedly installed on the outside of the sheath body, and the fixing hole on the upper side of the balloon is fixedly installed on the outside of the lower end of the sheath body and the balloon control tube.
2. The integrated multifunctional vascular interventional catheter sheath according to claim 1, characterized in that, When the balloon is not inflated or inflated with water, its outer diameter is smaller than the outer diameter of the lower end of the sheath body.
3. The integrated multifunctional vascular interventional catheter sheath according to claim 1, characterized in that, The upper and lower sides of the cavity tube and the sheath body are sealed and isolated.
4. The integrated multifunctional vascular interventional catheter sheath according to claim 1, characterized in that, The sheath body is flexible when located inside the balloon.
5. The integrated multifunctional vascular interventional catheter sheath according to claim 1, characterized in that, The balloon is made of medical-grade silicone or latex.
6. The integrated multifunctional vascular interventional catheter sheath according to claim 1, characterized in that, The sheath body, hollow tube, guide tube, balloon control tube, first camera catheter, second camera catheter, first saline flushing catheter, second saline flushing catheter, first spare catheter, second spare catheter, and lighting catheter are made of polytetrafluoroethylene or high-density polyethylene.
7. The integrated multifunctional vascular interventional catheter sheath according to claim 1, characterized in that, The lower outer side of the sheath body and the balloon control tube has a rounded transition structure.