Fast-placing type blood vessel sheath set convenient and fast to separate

Abstract

The utility model relates to the technical field of medical instruments, and discloses a convenient-to-separate and quick-place blood vessel sheath group which comprises a sheath tube and a puncture needle, the puncture needle is coaxially provided with a mounting ring, the mounting ring is matched with the joint end of the sheath tube, driving rods are hinged to the mounting ring at intervals in the circumferential direction, and the driving rods are connected with the puncture needle in a sleeving manner. One end of the driving rod extends to form an inserting block, a connector of the sheathing canal is provided with an inserting groove allowing the inserting block to be inserted, the mounting ring is slidably provided with a pushing block used for abutting against the driving rod, and the pushing block abuts against the inserting block to drive the inserting block of the driving rod to be inserted into the inserting groove. The mounting ring is further provided with an elastic piece used for pushing the pushing block to have the tendency of abutting against the driving rod all the time. The puncture needle can achieve the effect of reducing pulling on the sheathing canal when the puncture needle is separated from the sheathing canal.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and particularly to a convenient separation and quick placement type vascular sheath set. Background Art

[0002] The vascular sheath set is a key instrument combination used in clinical interventional therapy, including a sheath tube and a puncture needle. The sheath tube is a thin-walled catheter, usually made of high molecular materials such as plastics. It is designed to be inserted into the vascular system to provide a passage for subsequent instruments such as catheters, balloon catheters or stents. The puncture needle is used for percutaneous puncture of blood vessels to establish a basic passage from the skin to the blood vessels. The vascular sheath set establishes a stable passage between the skin and the blood vessels through the combination of the puncture needle and the sheath tube, providing a way for subsequent treatment instruments to enter the blood vessels.

[0003] There are various fixed connection methods between the sheath tube and the puncture needle. The sheath tube joint is usually designed with structures such as internal threads or card slots, which can cooperate with the external threads or protruding parts on the puncture needle to achieve a tight connection. In order to ensure the sealing performance at the connection between the sheath tube and the puncture needle, some sheath tube joints are also internally provided with components such as a sealing plate or a sealing gasket to prevent blood or other liquids from leaking.

[0004] Regarding the above related technologies, when the puncture needle is withdrawn from the sheath tube, during the separation process of the puncture needle and the sheath tube, there is a situation of pulling on the sheath tube, and the shaking of the sheath tube may also cause damage to the blood vessels. Utility Model Content

[0005] In order to reduce the pulling force on the sheath tube when the puncture needle and the sheath tube are separated, the present application provides a convenient separation and quick placement type vascular sheath set.

[0006] The present application provides a convenient separation and quick placement type vascular sheath set, adopting the following technical solutions:

[0007] A convenient separation and quick placement type vascular sheath set includes a sheath tube and a puncture needle. An installation ring is coaxially arranged on the puncture needle. The installation ring and the joint end of the sheath tube cooperate with each other. The installation ring is hinged with driving rods at intervals in the circumferential direction. One end of each driving rod extends with a plug-in block. The joint of the sheath tube is provided with a plug-in slot for the plug-in block to be inserted. A push block for pressing the driving rod is slidably installed on the installation ring. The pressing of the push block causes the plug-in block of the driving rod to be inserted into the plug-in slot. The installation ring is further provided with an elastic member for pushing the push block to always have a tendency to press the driving rod.

[0008] By adopting the above technical solution, the push block slidably mounted on the mounting ring can drive the driving rod to rotate. The insertion block of the driving rod is inserted into the insertion slot, and the insertion mechanism ensures the stable connection between the puncture needle and the sheath tube. The elastic member is provided to enable the push block to automatically press against the driving rod, eliminating the need for manual operation by the doctor and ensuring that the insertion block can be firmly inserted into the insertion slot, improving the connection stability; when the puncture tube needs to be withdrawn from the sheath tube, slide the push block to compress the elastic member. When the push block no longer presses against the driving rod, manually rotate the driving rod, and the driving rod will take the insertion block away from the slot, completely separating the puncture needle and the sheath tube.

[0009] The joint end of the mounting ring and the sheath tube cooperate with each other, and through a specific structural design, convenient separation and combination are achieved; this design enables the doctor to quickly and conveniently separate and combine the puncture needle and the sheath tube during use, improving the surgical efficiency and reducing the complexity during the operation, achieving less pulling on the sheath tube when the puncture needle and the sheath tube are separated.

[0010] Optionally, the mounting ring is coaxially connected with a guide rod, one end of the guide rod is connected with a convex block, the elastic member is a compression spring, and the compression spring is arranged between the convex block and the push block and sleeved on the guide rod.

[0011] By adopting the above technical solution, the compression spring provides a continuous pressing force, enabling the push block to stably press against the driving rod and ensuring the firm insertion of the insertion block into the insertion slot.

[0012] Optionally, the convex block is threadedly mounted on the guide rod.

[0013] By adopting the above technical solution, the elastic force of the compression spring can be adjusted by rotating the convex block, thereby controlling the pressing force of the push block against the driving rod.

[0014] Optionally, the push block is slidably mounted on the guide rod.

[0015] By adopting the above technical solution, the push block can press against or release the driving rod as needed, improving the operation flexibility of the push block and making the insertion and separation of the insertion block and the insertion slot more convenient.

[0016] Optionally, a conical hole is provided at the middle position of the push block, and a conical protruding portion is fixedly connected to the guide rod. When the push block slides into the protruding portion, the push block leaves the driving rod.

[0017] By adopting the above technical solution, a conical hole is provided at the middle position of the push block, and a conical protruding portion is fixedly connected to the guide rod. When the push block slides into the protruding portion, the push block will leave the driving rod, realizing the automatic separation of the push block and the driving rod, further improving the operation convenience and efficiency.

[0018] Optionally, the pushing block is connected with a first connecting rod, and one end of the first connecting rod is slidably installed on the installation ring.

[0019] By adopting the above technical solution, the pushing block can slide stably on the installation ring while maintaining the connection with the installation ring, which is convenient for operation and control.

[0020] Optionally, the installation ring is connected with a second connecting rod, and one end of the second connecting rod is inserted into the sheath pipe joint.

[0021] By adopting the above technical solution, the connection stability between the installation ring and the sheath pipe joint is enhanced, preventing the installation ring and the sheath pipe joint from rotating relative to each other, and making the structure of the whole blood vessel sheath group more firm.

[0022] Optionally, the first connecting rod and the second connecting rod are misaligned with each other.

[0023] By adopting the above technical solution, the interference between the first connecting rod and the second connecting rod is avoided, ensuring the normal play of their respective functions, and improving the stability and reliability of the overall structure.

[0024] In summary, the present application includes at least one of the following beneficial effects:

[0025] 1. The rapid installation and convenient separation of the blood vessel sheath group are realized, significantly improving the convenience and efficiency of surgical operations. When the puncture needle and the sheath pipe are separated, the force applied to the sheath pipe is small, reducing the pulling degree on the sheath pipe and further achieving the effect of protecting blood vessels;

[0026] 2. By setting the compression spring as an elastic member, a continuous pressing force is provided, enabling the pushing block to stably press the driving rod, thereby ensuring the firm insertion of the insertion block into the insertion slot. Description of the Drawings

[0027] Figure 1 is the overall structural schematic diagram of the combination of the sheath pipe and the puncture needle in the embodiment of the present application;

[0028] Figure 2 is the overall structural schematic diagram of the puncture needle in the embodiment of the present application;

[0029] Figure 3 is the overall structural schematic diagram of the sheath pipe in the embodiment of the present application;

[0030] Figure 4 is the partial cross-sectional schematic diagram of the combination of the sheath pipe and the puncture needle in the embodiment of the present application;

[0031] Figure 5 is the schematic diagram showing the cooperation between the pushing block and the protruding part in the embodiment of the present application.

[0032] Description of reference numerals: 10, sheath tube; 11, connector; 12, insertion slot; 20, puncture needle; 30, mounting ring; 31, second connecting rod; 40, driving rod; 41, insertion block; 50, pushing block; 51, conical hole; 52, first connecting rod; 6, elastic member; 70, guide rod; 71, protruding portion; 8, convex block. Detailed implementation manners

[0033] The following further elaborates on this application in conjunction with the Figures 1-5 accompanying drawings.

[0034] A convenient separation and quick placement type vascular sheath set provided by an embodiment of this application, referring to Figure 1 , a convenient separation and quick placement type vascular sheath set includes a sheath tube 10 and a puncture needle 20. A mounting ring 30 is coaxially installed on the puncture needle 20, and this mounting ring 30 is carefully designed to cooperate with the end of the connector 11 of the sheath tube 10. To ensure the sealing performance, a sealing structure, such as a sealing ring, is provided between the mounting ring 30 and the connector 11 of the sheath tube 10, thereby ensuring the sealing performance at the connection between the sheath tube 10 and the puncture needle 20 and preventing the leakage of blood or other liquids.

[0035] Referring to Figure 1 and Figure 2 , three driving rods 40 are hinged at intervals along the circumferential direction of the mounting ring 30. One end of each of these driving rods 40 extends with an insertion block 41. Specifically, the insertion block 41 is designed as a wedge-shaped structure with a wider insertion part and a narrower extraction part, so that the insertion block 41 can achieve self-locking when entering the insertion slot 12, ensuring the stable connection between the connector 11 of the sheath tube 10 and the mounting ring 30. And when separation is required, by rotating the driving rod 40, the extraction part of the insertion block 41 can be aligned with the outlet of the insertion slot 12, thereby achieving smooth separation.

[0036] Referring to Figure 3 , for matching with the insertion block 41, the connector 11 part of the sheath tube 10 is provided with an insertion slot 12 for the precise insertion of the insertion block 41.

[0037] Referring to Figure 2 , a pushing block 50 is also slidably installed on the mounting ring 30, and this pushing block 50 is used to press against the driving rod 40. In particular, when the pushing block 50 presses against the driving rod 40, an acute angle is formed between the length direction of the driving rod 40 and the central axis of the guide rod 70, and such a design is beneficial for the driving rod 40 to work more stably and effectively. By moving the pushing block 50, the insertion block 41 of the driving rod 40 can be firmly inserted into the insertion slot 12 or smoothly pulled out from the insertion slot 12.

[0038] Referring to Figure 2 and Figure 4, To ensure that the pushing block 50 always has a pressing tendency against the driving rod 40, an elastic member 6 is provided on the mounting ring 30. Further, a guide rod 70 is coaxially connected to the mounting ring 30, and a position-adjustable convex block 8 is threadedly connected to one end of the guide rod 70. The elastic member 6 is specifically a compression spring, which is arranged between the convex block 8 and the pushing block 50 and sleeved on the guide rod 70. Since the convex block 8 is threadedly mounted on the guide rod 70, the elastic force of the compression spring can be adjusted by rotating the convex block 8, thereby controlling the pressing force of the pushing block 50 against the driving rod 40.

[0039] Referring to Figure 4 and Figure 5 , the pushing block 50 is slidably mounted on the guide rod 70. Such a design not only makes the installation of the elastic member 6 more stable, but also facilitates adjusting the elastic force of the spring according to actual needs. Further, a conical hole 51 is provided at the middle position of the pushing block 50, and a conical protrusion 71 is fixedly connected to the guide rod 70. When the pushing block 50 slides into the protrusion 71, under the guiding action of the conical hole 51, the pushing block 50 will automatically move away from the driving rod 40, and the friction force formed between the pushing block 50 and the protrusion 71 keeps the pushing block 50 and the driving rod 40 at a distance. When the hand leaves the pushing block 50 and manually rotates the driving rod 40, the driving rod 40 drives the plug-in block 41 to leave the joint 11 of the sheath 10, thereby realizing the automatic separation of the puncture needle 20 and the sheath 10.

[0040] Referring to Figure 4 , to improve the operation convenience, the pushing block 50 is further connected with a first connecting rod 52, and one end of the first connecting rod 52 is inserted and mounted on the mounting ring 30, so that when the pushing block 50 presses against the driving rod 40, it will not rotate and can also play a partial guiding role in the sliding of the pushing block 50. In addition, a second connecting rod 31 is provided on the mounting ring 30, and one end of the second connecting rod 31 is inserted into the joint 11 of the sheath 10 to prevent the mounting ring 30 from rotating. When the puncture needle 20 leaves the sheath 10, the second connecting rod 31 can also play a guiding role to keep the puncture needle 20 leaving the joint 11 of the sheath 10 in a unified direction. Such a design provides additional support and stability for the operation. To avoid mutual interference between the two, the first connecting rod 52 and the second connecting rod 31 are ensured to be misaligned in the design.

[0041] The implementation principle of this embodiment is: through the unique structure between the plug-in block 41 and the plug-in slot 12, plus the precise cooperation among components such as the mounting ring 30, the driving rod 40, and the pushing block 50, this vascular sheath group not only realizes the fast and stable connection between the puncture needle 20 and the sheath 10, but also ensures that they can be separated quickly and smoothly when needed. In addition, the newly added sealing structure and the adjustable compression spring further enhance the safety and practicality of the system, greatly reducing the risk of damage to blood vessels that may occur during the operation and significantly improving the safety and convenience of use.

[0042] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A convenient separation and rapid placement type vascular sheath set, characterized in that: It includes a sheath tube (10) and a puncture needle (20). An installation ring (30) is coaxially arranged on the puncture needle (20). The end of the installation ring (30) and the joint (11) of the sheath tube (10) are mutually matched. Driving rods (40) are hinged at intervals in the circumferential direction on the installation ring (30). One end of each driving rod (40) extends with a plug-in block (41). The joint (11) of the sheath tube (10) is provided with a plug-in slot (12) for the plug-in block (41) to be plugged into. A push block (50) for pressing against the driving rod (40) is slidably installed on the installation ring (30). The pressing of the push block (50) causes the plug-in block (41) of the driving rod (40) to be plugged into the plug-in slot (12). The installation ring (30) is further provided with an elastic member (6) for pushing the push block (50) to always have a tendency to press against the driving rod (40).

2. The convenient separation and rapid placement type vascular sheath set according to claim 1, wherein: A guide rod (70) is coaxially connected to the installation ring (30). One end of the guide rod (70) is connected with a convex block (8). The elastic member (6) is a compression spring. The compression spring is arranged between the convex block (8) and the push block (50) and is sleeved on the guide rod (70).

3. The convenient separation and rapid placement type vascular sheath set according to claim 2, characterized in that: The convex block (8) is threadedly installed on the guide rod (70).

4. The convenient separation and quick placement type vascular sheath set according to claim 2, wherein: The push block (50) is slidably installed on the guide rod (70).

5. The convenient separation and quick placement type vascular sheath set according to claim 4, characterized in that: A conical hole (51) is formed in the middle position of the push block (50). The guide rod (70) is fixedly connected with a conical protrusion (71). When the push block (50) slides into the protrusion (71), the push block (50) leaves the driving rod (40).

6. The convenient separation and rapid placement type vascular sheath set according to claim 5, characterized in that: The push block (50) is connected with a first connecting rod (52). One end of the first connecting rod (52) is slidably installed on the installation ring (30).

7. The convenient separation and rapid placement type vascular sheath set according to claim 6, characterized in that: The installation ring (30) is connected with a second connecting rod (31). One end of the second connecting rod (31) is plugged into the joint (11) of the sheath tube (10).

8. The convenient separation and quick placement type vascular sheath set according to claim 7, wherein: The first connecting rod (52) and the second connecting rod (31) are mutually offset.

Images