Safe and quick-setting type blood vessel sheath assembly

Abstract

The utility model relates to the technical field of medical instruments, and discloses a safe and quick-setting type blood vessel sheath assembly which comprises a sheath tube and a puncture needle arranged in the sheath tube in a combined mode, the longitudinal relative position of the sheath tube and the puncture needle is not changed after the sheath tube and the puncture needle are combined, the contact position of the first end of the sheath tube and the puncture needle is in smooth transition, and the end portion of the first end of the sheath tube is of a flexible structure. The sheathing canal can guide the trend of the blood vessel in the blood vessel, and damage to the blood vessel is reduced.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and particularly to a safe and quickly implanted vascular sheath assembly. Background Art

[0002] A vascular sheath set refers to a combination of medical devices used in vascular interventional surgeries, usually consisting of a catheter sheath, a dilator, a guide wire, etc. They are designed to establish a channel within a blood vessel so that doctors can conveniently perform diagnostic and therapeutic operations. Such a combination of devices is commonly used in interventional surgeries for heart diseases, peripheral vascular diseases, etc.

[0003] A catheter sheath is a plastic tube that can be inserted into a blood vessel through skin puncture or surgical incision. It provides a channel to protect the blood vessel from damage by other instruments and allows doctors to enter and operate multiple times without having to re-puncture the blood vessel.

[0004] One end of the existing catheter sheath that enters the blood vessel is a rigid straight structure. During the operation, if one end of the catheter sheath touches the blood vessel wall, it is likely to cause blood vessel damage. Utility Model Content

[0005] To further protect blood vessels, this application provides a safe and quickly implanted vascular sheath assembly.

[0006] This application provides a safe and quickly implanted vascular sheath assembly, adopting the following technical solution:

[0007] A safe and quickly implanted vascular sheath assembly includes a sheath tube, a puncture needle assembled in the sheath tube. After combination, the longitudinal relative positions of the sheath tube and the puncture needle remain unchanged. The contact between the first end of the sheath tube and the puncture needle has a smooth transition, and the end of the first end of the sheath tube is a flexible structure.

[0008] By adopting the above technical solution, after the sheath tube and the puncture needle are combined, their longitudinal relative positions remain unchanged, and the contact has a smooth transition. The first end of the sheath tube is a flexible structure. This enables the vascular sheath assembly to be inserted into the blood vessel more smoothly, reducing damage to the blood vessel; after the puncture needle is withdrawn from the sheath tube, the sheath tube can follow the direction of the blood vessel in the blood vessel, reducing damage to the blood vessel. Additionally, when the end of the first end of the sheath tube touches the blood vessel wall, since the end of the first end of the sheath tube is flexible, it can bend by itself, thus avoiding puncturing or causing damage to the blood vessel.

[0009] Optionally, the end of the first end of the sheath tube bends after being blocked.

[0010] By adopting the above technical solution, the vascular sheath assembly can bend and bypass when encountering obstacles in the blood vessel instead of directly piercing the blood vessel wall, improving the safety and flexibility of the operation.

[0011] Optionally, the first end of the sheath tube is bent into a hook shape after bending.

[0012] Optionally, side holes are provided on the side wall of the sheath tube.

[0013] By adopting the above technical solution, if the orifice of the sheath tube is blocked, the design of the side holes allows blood or other fluids to pass through, which helps to maintain blood circulation during the operation and reduces the risk of complete blockage of the sheath tube.

[0014] Optionally, the orientation of the orifice of the side hole is different from the orientation of the orifice of the sheath tube.

[0015] By adopting the above technical solution, if the orifice of the sheath tube is blocked and the side holes have different orientations, the risk of complete blockage of the sheath tube can be further reduced.

[0016] Optionally, the vascular sheath assembly further includes a transition sheath, the transition sheath includes a transition tapered tube section, one end of the transition sheath extends into the sheath tube, and the transition tapered tube section extends out from the first end of the sheath tube, and one end of the puncture needle extends into the transition sheath and extends out from the transition tapered tube section.

[0017] By adopting the above technical solution, the transition tapered tube section is used to realize the transition of the dimensional difference between the tip of the puncture needle and the end of the first end of the sheath tube. After the puncture is completed, the puncture needle and the transition sheath are withdrawn from the sheath tube simultaneously or sequentially.

[0018] Optionally, the transition sheath and the puncture needle are fixedly connected.

[0019] By adopting the above technical solution, the transition sheath and the puncture needle enter and exit the sheath tube together, ensuring the stability of the transition sheath and the puncture needle during the operation.

[0020] Optionally, a threaded tube is provided at the other end of the transition sheath, a threaded sleeve is provided at the other end of the puncture needle, and the threaded sleeve is threadedly connected to the threaded tube.

[0021] By adopting the above technical solution, the threaded sleeve and the threaded tube are threadedly connected, making the vascular sheath assembly easy to assemble and disassemble, while ensuring the tight connection between the components, improving the convenience and safety of the operation.

[0022] In summary, the present application includes at least one of the following beneficial effects:

[0023] 1. Through the combined design of the sheath tube and the puncture needle, as well as the flexible structure and bending ability of the first end of the sheath tube, the vascular sheath assembly can more smoothly and safely adapt to different shapes and bends of blood vessels during insertion and operation, reducing damage to blood vessels;

[0024] 2. The design of the side holes of the sheath tube and the different orientations of the orifices of the side holes help to maintain blood circulation during the operation, reduce the risk of blood vessel blockage, and at the same time avoid directly impacting the blood vessel wall, further protecting the blood vessels;

[0025] 3. The introduction of the transition sheath and its fixed connection and threaded connection methods with the puncture needle improve the stability of the vascular sheath assembly and the convenience of operation, ensure the tight connection between components, and reduce the operation risk. Brief Description of the Drawings

[0026] Figure 1 is the overall structural schematic diagram of the combination of the sheath tube and the puncture needle in the embodiment of the present application;

[0027] Figure 2 is the schematic diagram of the bending of the flexible structure of the sheath tube in the embodiment of the present application;

[0028] Figure 3 is the schematic diagram of the side holes provided on the sheath tube in the embodiment of the present application;

[0029] Figure 4 is the specific structural schematic diagram showing the sheath tube, the puncture needle and the transition sheath in the embodiment of the present application.

[0030] Description of the Reference Numerals: 10, sheath tube; 11, first end; 12, side hole; 13, clamping block; 20, puncture needle; 21, threaded sleeve; 30, transition sheath; 31, transition conical tube section; 32, threaded tube; 33, clamping ring. Detailed Description of the Embodiment

[0031] The following is a further detailed description of the present application in conjunction with the attached Figures 1-4 drawings.

[0032] The embodiment of the present application discloses a safe and rapid placement type vascular sheath assembly. Referring to Figure 1 , a safe and rapid placement type vascular sheath assembly includes a sheath tube 10 and a puncture needle 20, and the sheath tube 10 and the puncture needle 20 are combined and arranged so that their relative positions in the longitudinal direction are kept stable. The contact between the first end 11 of the sheath tube 10 and the puncture needle 20 realizes a smooth transition, ensuring the smooth entry and operation of the instruments during the operation.

[0033] Referring to Figure 2 , the end of the first end 11 of the sheath tube 10 is conical. The first end 11 of the sheath tube 10 is designed as a flexible structure, which can bend when contacting obstacles such as the blood vessel wall, thereby avoiding damage to the blood vessel. The specific implementation manner of the flexible structure can be achieved by selecting appropriate materials and structures, such as using flexible medical plastic materials.

[0034] Referring to Figure 3, In addition, side holes 12 are formed on the side wall of the sheath tube 10, and the side holes 12 can be located at the straight section or the flexible structure of the sheath tube 10. The side holes 12 facilitate blood circulation and surgical operation during the surgery. If the orifice of the sheath tube 10 is blocked, the side holes 12 help to maintain blood circulation during the surgical operation. The number and shape of the side holes 12 can be selected and adjusted according to actual needs to meet the requirements of different surgical scenarios. The orifice orientation of the side holes 12 is different from the orifice orientation of the sheath tube 10. This design further enhances the operability and flexibility of the surgery and can further reduce the occurrence of complete blockage of the sheath tube 10.

[0035] Referring to Figure 1 and Figure 4 , Further, in order to better achieve a smooth transition between the puncture needle 20 and the sheath tube 10, the vascular sheath assembly further includes a transition sheath 30. The transition sheath 30 includes a transition conical tube section 31. One end of the transition sheath 30 with the transition conical tube section 31 extends into the sheath tube 10, and the transition conical tube section 31 extends out from the first end 11 of the sheath tube 10. One end of the puncture needle 20 extends into the transition sheath 30 and extends out from the transition conical tube section 31. The design of the transition sheath 30 provides a stable channel for the puncture needle 20, which helps to guide the puncture needle 20 to smoothly enter the blood vessel. At the same time, the gradually changing outer diameter of the transition conical tube section 31 can gradually guide the puncture needle 20 and reduce the damage to the blood vessel and the pain of the patient during the puncture process.

[0036] Particularly, the transition sheath 30 and the puncture needle 20 are connected by a fixed connection method, and the fixed connection method can be a snap connection, an adhesive connection or a welding connection, etc. In order to ensure the stability between the puncture needle 20 and the transition sheath 30 during the surgery and facilitate fine adjustment to adapt to the blood vessel conditions of different patients, a threaded connection method is preferably adopted in this embodiment.

[0037] Referring to Figure 4 , Specifically, a threaded tube 32 is provided at the other end of the transition sheath 30, and the threaded tube 32 extends out of the sheath tube 10. A threaded sleeve 21 is provided at the other end of the puncture needle 20, and the threaded sleeve 21 also extends out of the sheath tube 10. After the puncture needle 20 extends into the transition sheath 30, the threaded sleeve 21 and the threaded tube 32 are connected by a threaded method, so that the combination of the puncture needle 20 and the transition sheath 30 is fixedly connected. This connection method has a certain adjustment range and has a certain locking effect, which can ensure that there is no accidental relative movement between the transition sheath 30 and the puncture needle 20 during the surgery.

[0038] There is a locking structure between the transition sheath 30 and the sheath tube 10, which can be mutual clamping, or fixed by means of threaded connection, etc. In this embodiment, it is preferably adopted that the clamping block 13 and the clamping ring 33 are mutually clamped. A clamping ring 33 is connected to the outer peripheral side of the transition sheath 30, and a clamping block 13 is arranged at the second end of the sheath tube 10. A certain frictional force is formed by the mutual clamping between the clamping ring 33 and the clamping block 13, so that the sheath tube 10 and the transition sheath 30 are detachably and fixedly connected.

[0039] The implementation principle of this embodiment is as follows: By designing the first end 11 of the flexible sheath tube 10 and the smoothly transitioning contact part, damage to blood vessels is avoided and the smoothness of the operation is improved; the setting of the side holes 12 facilitates blood circulation and surgical operation, improving the convenience and efficiency of the operation; the design of the transition sheath 30 provides a stable channel for the puncture needle 20 and helps to guide the puncture needle 20 into the blood vessel, reducing damage to the blood vessel; through the fixed connection, especially the threaded connection method, the stability between the transition sheath 30 and the puncture needle 20 is ensured and fine adjustment is facilitated, further improving the safety and accuracy of the operation. Overall, this embodiment has made various improvements and optimizations to the existing blood vessel sheath assembly, significantly improving the safety and efficiency of the operation.

[0040] The above are all preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A safe and rapid placement type vascular sheath assembly, characterized in that: It includes a sheath tube (10), a puncture needle (20) assembled in the sheath tube (10). After assembly, the longitudinal relative positions of the sheath tube (10) and the puncture needle (20) remain unchanged. The contact between the first end (11) of the sheath tube (10) and the puncture needle (20) has a smooth transition, and the end of the first end (11) of the sheath tube (10) is a flexible structure.

2. The safety and quick-placement type vascular sheath assembly according to claim 1, wherein: The end of the first end (11) of the sheath tube (10) bends after being blocked.

3. The safety quick-placement type vascular sheath assembly according to claim 2, characterized in that: After bending, the first end (11) of the sheath tube (10) is in a hook shape.

4. The safety quick-placement type vascular sheath assembly according to claim 2, characterized in that: Side holes (12) are formed in the side wall of the sheath tube (10).

5. The safety quick-set vascular sheath assembly according to claim 4, characterized in that: The orientation of the orifice of the side hole (12) is different from the orientation of the orifice of the sheath tube (10).

6. The safety and rapid placement type vascular sheath assembly according to claim 1, characterized in that: The vascular sheath assembly further includes a transition sheath (30). The transition sheath (30) includes a transition conical tube section (31). One end of the transition sheath (30) extends into the sheath tube (10), and the transition conical tube section (31) extends out from the first end (11) of the sheath tube (10). One end of the puncture needle (20) extends into the transition sheath (30) and extends out from the transition conical tube section (31).

7. A safety quick-placement type vascular sheath assembly according to claim 6, characterized in that: There is a fixed connection between the transition sheath (30) and the puncture needle (20).

8. A safety quick-placement type vascular sheath assembly according to claim 7, characterized in that: The other end of the transition sheath (30) is provided with a threaded tube (32), and the other end of the puncture needle (20) is provided with a threaded sleeve (21). The threaded sleeve (21) is threadedly connected to the threaded tube (32).

Images