Catheter device for cerebrovascular disease interventional operation in neurosurgery department

Abstract

The utility model belongs to the field of medical instruments, and discloses a catheter device for neurosurgical cerebrovascular disease interventional operation, which comprises a connector, a catheter body and a tip, the connector adopts a Luer connector, the connector is fixedly connected with the near end of the catheter body, the far end of the catheter body is fixedly connected with the tip, and the diameter of the tip is gradually reduced from the joint of the catheter body and the tip to the far end. A plurality of spherical bulges are uniformly distributed on the outer wall of the tube body and are communicated with the tube body, the tube body comprises a plurality of tube body sections with different hardness, the number of the tube body sections is 3-6, the Vickers hardness range of the tube body sections is 20-80HV, the plurality of tube body sections are sequentially connected from hard to soft from the near end to the far end of the tube body, and the tube body sections are connected with the tube body. The plurality of pipe body sections are all made of a polyurethane material; the micro-catheter solves the problem that an existing micro-catheter is difficult to smoothly reach a target blood vessel area in the implantation process; the device is suitable for neurointervention operations.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field especially, it relates to a catheter device for neurosurgery cerebral vascular disease intervention operation. BACKGROUND

[0002] With the continuous development of medical technology, neurointerventional surgery has become an important and effective treatment method in the treatment of cerebrovascular diseases. Neurointerventional technology uses minimally invasive methods to directly treat cerebral vessels, such as embolization of aneurysm, vascular reconstruction and thrombus removal. In neurointerventional surgery, microcatheter is a key instrument for accurate navigation and delivery of treatment tools or drugs in neurointerventional surgery to safely and effectively treat lesions in the nervous system.

[0003] At present, in order to protect the blood vessels and avoid the damage of the microcatheter to the blood vessels, the existing microcatheter is made of flexible material. However, due to the influence of friction and other factors, it is difficult for the microcatheter to smoothly reach the target blood vessel area during the placement process. UTILITARY MODEL CONTENT

[0004] The utility model intends to provide a catheter device for neurosurgery cerebral vascular disease intervention operation to solve the problem that the existing microcatheter is difficult to smoothly reach the target blood vessel area during the placement process.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0006] The basic technical scheme provided by the utility model is: a catheter device for neurosurgery cerebral vascular disease intervention operation, comprising a connector, a tube body and a tip, the proximal end of the tube body is fixedly connected with the connector, the distal end of the tube body is fixedly connected with the tip, the outer wall of the tube body is provided with a plurality of protrusions, the plurality of protrusions are in communication with the tube body, the tube body comprises a plurality of tube body segments with different hardness, the plurality of tube body segments are sequentially connected from the proximal end to the distal end of the tube body in the order of hard to soft, and the plurality of tube body segments are made of flexible material.

[0007] The principle of the basic technical scheme is: through the design structure of the protrusions, the contact area between the microcatheter and the inner wall of the blood vessel is reduced, thereby reducing the friction between the microcatheter and the inner wall of the blood vessel and increasing the success probability of the placement of the microcatheter; by designing the tube body into a plurality of tube body segments with different hardness, the hardness of the tube body presents a gradual change structure, the proximal end of the tube body is designed as a relatively hard structure, which facilitates the placement of the tube body and provides the required power for the placement; the distal end of the tube body is designed as a relatively soft structure, which facilitates the placement of the tube body, reduces the damage caused by collision, and is more easily bent and deformed to complete the navigation in the complex structure environment.

[0008] The beneficial effects of the basic technical solution are: effectively reducing the friction during the microcatheter placement process, increasing the navigation ability of the distal end of the microcatheter and the smoothness of the proximal end of the placement, and more easily completing the placement of the microcatheter; when using the microcatheter for fluid input, the protrusions can effectively increase the turbulence of the fluid, promote the uniform distribution of the fluid, and more quickly place the fluid.

[0009] Preferably, a plurality of protrusions are uniformly distributed on the tube body.

[0010] Through the above arrangement, the placement of the tube body is more easily completed, and compared with conventional microcatheters, when the tube body is bent, excessive bending of the tube body can be avoided, when the fluid is injected, the protrusions help to form turbulence, and at the same time improve the fluid streamline, effectively reduce the resistance generated by the bending of the microcatheter, and promote the flow of the fluid.

[0011] Preferably, a plurality of protrusions are uniformly distributed on the tube body.

[0012] Through the above arrangement, the smoothness of the protrusions is increased, and damage to the inner wall of the blood vessel caused by the protrusions is avoided.

[0013] Preferably, the number of tube body segments is 3-6 segments, and the Vickers hardness of the tube body segments is in the range of 20HV-80HV.

[0014] Through the above arrangement, the number of tube body segments and the hardness of the tube body segments can be selected according to different interventional surgeries, and the practicality of the device is enhanced.

[0015] Preferably, the connector is a luer connector.

[0016] Through the above arrangement, the standardized design of the luer connector can ensure its quick, safe and stable connection with other medical devices, and facilitate efficient fluid delivery in medical operations.

[0017] Preferably, a plurality of tube body segments are made of polyurethane material.

[0018] Through the above arrangement, the excellent flexibility and biocompatibility of polyurethane material make the device more easily operated in a complex vascular environment and reduce the stimulation to the tissue.

[0019] Preferably, the diameter of the tip gradually decreases from the connection between the tube body and the tip to the distal end.

[0020] Through the above arrangement, the microcatheter can smoothly enter smaller blood vessels.

[0021] Preferably, the diameter of the tube body is 0.3-0.7mm.

[0022] Through the above arrangement, the applicability of the device is enhanced.

[0023] Preferably, the height of the protrusion is 0.05 mm to 0.15 mm.

[0024] The above settings effectively reduce friction without increasing the resistance of the catheter within the blood vessel. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a catheter device for interventional surgery of neurovascular diseases according to the present invention;

[0026] The corresponding labels in the attached diagram are named as follows: 1. Connector; 2. Tube body; 3. Protrusion; 4. Tube body segment; 5. Tip. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0028] like Figure 1 As shown: A catheter device for interventional surgery of neurovascular diseases includes a connector 1, a tube body 2, and a tip 5. The connector 1 is a Luer connector and is fixedly connected to the proximal end of the tube body 2. The distal end of the tube body 2 is fixedly connected to the proximal end of the tip 5. The diameter of the tip 5 gradually decreases from the connection between the tube body 2 and the tip 5 to the distal end. The diameter of the tube body 2 is 0.3 mm to 0.7 mm. The outer wall of the tube body 2 is uniformly distributed with several "spherical" protrusions 3, all of which are connected to the tube body 2. The height of the protrusions 3 is 0.05 mm to 0.15 mm. The tube body 2 includes several tube segments 4 with different hardnesses. The number of tube segments 4 is 3 to 6, and the Vickers hardness range of the tube segments 4 is 20 HV to 80 HV. The tube segments 4 are connected sequentially from the proximal end of the tube body 2 to the distal end in order from hard to soft. All tube segments 4 are made of polyurethane material.

[0029] The specific implementation process is as follows:

[0030] By holding the connector 1, the distal end of the tip 5 is inserted into the blood vessel from the puncture point, and then the proximal end of the tube body 2 is pushed to allow the tube body 2 to gradually enter the blood vessel until the tip 5 reaches the target blood vessel area. Then, through the connector 1, fluid is placed into the tube body 2. Finally, the fluid passes through the tube body 2 and the tip 5 and reaches the target blood vessel area.

[0031] During the insertion process, the "spherical" protrusion 3 effectively reduces the friction between the device and the inner wall of the blood vessel. The tube segments 4 with different hardness ensure the flexibility of the distal end of the tube 2 and the hardness of the proximal end of the tube 2, increasing the navigation ability of the distal end of the tube 2 and the pushing ability of the proximal end of the tube 2, thus increasing the insertion efficiency and success rate of the device.

[0032] During the conveying fluid process, the convex 3 helps to form turbulent flow, while improving the fluid streamline, effectively reducing the resistance generated by the bending of the device, promoting the flow of fluid, so that the device is not prone to blockage.

[0033] The above is only the embodiment of the present application, and the common technical solutions or characteristics in the scheme are not described in detail. It should be pointed out that for those skilled in the art, without departing from the technical scheme of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A catheter device for neurosurgical cerebral vascular intervention surgery, characterized by: The utility model relates to a kind of medical catheter, including joint (1), pipe body (2) and tip (5), the pipe body (2) proximal end is fixedly connected with the joint (1), the pipe body (2) distal end is fixedly connected with the tip (5), the pipe body (2) outer wall is equipped with several protrusions (3), several protrusions (3) are communicated with the pipe body (2), the pipe body (2) includes several pipe body segments (4) of different hardness, several pipe body segments (4) are sequentially connected by the proximal end to distal end of the pipe body (2) according to by hard to soft order, several pipe body segments (4) are all made of flexible material.

2. The catheter device for neurosurgical intervention of cerebrovascular diseases according to claim 1, characterized in that: Several protrusions (3) are evenly distributed on the pipe body (2).

3. The catheter device for neurosurgical intervention of cerebrovascular diseases according to claim 1, characterized in that: Several protrusions (3) are all "spherical” shape.

4. The catheter device for neurosurgical intervention of cerebrovascular diseases according to claim 1, characterized in that: The number of the pipe body segment (4) is 3-6, and the Vickers hardness of the pipe body segment (4) ranges from 20HV to 80HV.

5. The catheter device for neurosurgical intervention of cerebrovascular diseases according to claim 1, characterized in that: The joint (1) adopts a luer joint.

6. The catheter device for neurosurgical intervention of cerebrovascular diseases according to claim 1, characterized in that: Several pipe body segments (4) are all made of polyurethane material.

7. The catheter device for neurosurgical intervention of cerebrovascular diseases according to claim 1, characterized in that: The diameter of the tip (5) gradually decreases from the connection between the pipe body (2) and the tip (5) to the distal end.

8. The catheter device for neurosurgical intervention of cerebrovascular diseases according to claim 1, characterized in that: The diameter of the pipe body (2) is 0.3-0.7mm.

9. The catheter device for neurosurgical intervention of cerebrovascular diseases according to claim 1, characterized in that: The height of the protrusion (3) is 0.05-0.15mm.

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