A sheath tube connected to a deep vein dialysis catheter

Abstract

The present invention relates to the technical field of sheath tube structure, and discloses a sheath tube connected to a deep vein dialysis catheter, comprising a sheath tube body, a connecting tube and a dialysis catheter; the connecting tube is arranged on the side of the sheath tube body; the bottom of the sheath tube body and one end of the dialysis catheter are both provided with external threads, and a nut is installed on the external thread of the sheath tube body, and the nut connects the sheath tube body and the dialysis catheter together. In the present invention, the connection between the sheath tube body and the dialysis catheter adopts a threaded connection, and the threaded connection method can facilitate the installation and disassembly of the sheath tube body and the dialysis catheter, which is conducive to improving the efficiency of the guide wire in clearing the internal blockage of the dialysis catheter; the setting of the partition plate and the rotating plate inside the sheath tube body can not only guide and support the guide wire, but also prevent blood from flowing out.

Description

Technical Field

[0001] The invention relates to the technical field of sheath tube structures, and in particular to a sheath tube connected to a deep vein dialysis catheter (temporary or long-term). Background Art

[0002] In emergency and clinical rescue, deep venous catheter is an indispensable and important tool. Its puncture site can be selected from femoral vein, subclavian vein or internal jugular vein. Its main purpose is to provide patients with continuous or intermittent intravenous infusion, central venous pressure monitoring, central venous nutrition injection, infusion of hypertonic or irritating solutions, blood transfusion or collection of blood samples, etc. When dialysis is performed with a deep venous dialysis catheter, the rear end of the dialysis catheter is connected to the instrument and the front end is inserted into the organ. When blood clots in the blood block the front end of the dialysis catheter, a guide wire is needed to clear it. At this time, the rear end of the dialysis catheter needs to be unscrewed from the instrument and the guide wire is passed through the dialysis catheter for unblocking.

[0003] During unblocking, the guide wire needs to be moved back and forth, and the inner diameter of the dialysis catheter is relatively thicker than the guide wire, so blood will flow out from the rear end of the dialysis catheter along the guide wire; the outflow of blood will cause harm to the human body; therefore, it is necessary to design a device that is connected to the end of the dialysis catheter to prevent blood from flowing out when the guide wire is needed for unblocking, so as to solve the above problem. Summary of the invention

[0004] The object of the present invention is to provide a sheath tube connected to a deep vein dialysis catheter to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A sheath tube for connecting a deep vein dialysis catheter comprises a sheath tube body, a connecting tube and a dialysis catheter; the connecting tube is arranged on the side of the sheath tube body; it is characterized in that: a cylindrical partition is arranged in the inner middle part of the sheath tube body; a rotating shaft is fixedly arranged at the center of the partition, and a cylindrical rotating plate is rotatably connected to the top of the partition via the rotating shaft; an axle seat is arranged at the top of the rotating plate, a transmission shaft is connected to the top of the axle seat, and a knob is fixedly installed on the top of the transmission shaft; the rotating plate and the partition are respectively provided with connecting hole two and connecting hole one along a circle of the same diameter; the bottom of the sheath tube body and one end of the dialysis catheter are both provided with external threads, and a nut is installed on the external thread of the sheath tube body.

[0007] As a further solution of the present invention: the diameter of the rotating plate is smaller than the diameter of the partition.

[0008] As a further solution of the present invention: the second connecting hole on the rotating plate is connected to the first connecting hole on the partition plate.

[0009] As a further solution of the present invention: a guide wire is slidably installed between the first connecting hole and the second connecting hole, a contact seat is provided at the end of one end of the guide wire insertion sheath body, and a spherical contact is connected to the bottom of the contact seat.

[0010] As a further solution of the present invention: the connection between the spherical contact and the contact seat is a rotational connection.

[0011] As a further solution of the present invention: the diameter of the connecting hole 1 is the same as that of the connecting hole 2, and the diameter of the connecting hole 1 is matched with the diameter of the guide wire.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the connection method between the sheath body and the dialysis catheter in the present invention is a threaded connection, and the threaded connection method can facilitate the installation and disassembly of the sheath body and the dialysis catheter, which is beneficial to improving the efficiency of the guide wire in clearing the blockage inside the dialysis catheter; the setting of the partition plate and the rotating plate inside the sheath body can not only guide and support the guide wire, but also prevent blood from flowing out; the end of the guide wire is provided with a spherical contact, and the setting of the spherical contact can effectively prevent the guide wire from damaging the inner wall of the dialysis catheter when it is inserted into the dialysis catheter. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the main structure of Embodiment 1 of the present invention;

[0014] Figure 2 It is a main cross-sectional view of Embodiment 1 of the present invention;

[0015] Figure 3 is a schematic structural diagram of a partition in Example 1 of the present invention;

[0016] Figure 4 is a schematic structural diagram of a rotating plate in Embodiment 1 of the present invention;

[0017] Figure 5 is a main cross-sectional view of Embodiment 2 of the present invention;

[0018] Figure 6 It is a schematic diagram of the spherical contact structure at the end of the guide wire in Example 2 of the present invention.

[0019] Among them: 1. sheath body; 2. connecting tube; 3. nut; 4. dialysis catheter; 5. guide wire; 6. knob; 7. transmission shaft; 8. rotating plate; 9. partition; 10. rotating shaft; 11. shaft seat; 12. connecting hole 1; 13. connecting hole 2; 14. contact seat; 15. contact. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0021] like Figure 1-4 As shown, a sheath tube for connecting a deep vein dialysis catheter comprises a sheath tube body 1, a connecting tube 2 and a dialysis catheter 4; the connecting tube 2 is arranged on the side of the sheath tube body 1; the bottom of the sheath tube body 1 and one end of the dialysis catheter 4 are both provided with threads, and a nut 3 is installed on the thread of the sheath tube body 1, and the nut 3 connects the sheath tube body 1 and the dialysis catheter 4 together, and the setting of the thread facilitates the installation and disassembly between the sheath tube body 1 and the dialysis catheter 4; a cylindrical partition 9 is arranged in the inner middle part of the sheath tube body 1; a rotating shaft 10 is fixedly arranged at the center of the partition 9, and a cylindrical rotating plate 8 is rotatably connected to the top of the partition 9 through the rotating shaft 10; the rotating plate 8 and the partition 9 are arranged along the same The diameter circle is respectively provided with a connecting hole 2 13 and a connecting hole 12; the diameter of the rotating plate 8 is smaller than the diameter of the partition 9, and the connecting hole 2 13 on the rotating plate 8 is connected with the connecting hole 12 on the partition 9; an axle seat 11 is arranged on the top of the rotating plate 8, the bottom of the axle seat 11 is fixedly connected to the rotating plate 8, the top of the axle seat 11 is fixedly connected to the transmission shaft 7, and the top of the transmission shaft 7 is fixedly installed with a knob 6; rotate the knob 6, the knob 6 drives the transmission shaft 7 to start rotating, the rotation of the transmission shaft 7 then drives the axle seat 11 to start rotating, the rotation of the axle seat 11 drives the rotating plate 8 to rotate, and the rotation of the rotating plate 8 can then control the connection and stagger between the connecting hole 12 and the connecting hole 2 13.

[0022] When in use, first use the nut 3 to connect the sheath body 1 and the dialysis catheter 4, and then rotate the knob 6, the knob 6 drives the transmission shaft 7 to start rotating, the rotation of the transmission shaft 7 then drives the shaft seat 11 to start rotating, the rotation of the shaft seat 11 drives the rotating plate 8 to rotate, the rotation of the rotating plate 8 can then control the connection between the connecting hole 12 and the connecting hole 2 13, after the connection, the guide wire is passed through the connecting hole 12 and the connecting hole 2 13 and extended into the interior of the dialysis catheter 4 for unblocking.

[0023] Embodiment 2

[0024] On the basis of the first embodiment, in order to optimize the performance of the device, Figure 5 and 6 As shown, a guide wire 5 is slidably installed between the connecting hole 12 and the connecting hole 2 13, and the guide wire 5 can pass through the dialysis catheter 4 for dredging; the end of the guide wire 5 inserted into one end of the sheath body 1 is provided with a contact seat 14, and the bottom of the contact seat 14 is provided with a spherical contact 15. The setting of the spherical contact 15 can effectively prevent the guide wire 5 from scratching the inner wall of the dialysis catheter 4 when it is inserted into the dialysis catheter 4.

[0025] The above-described embodiments are only preferred solutions of the present invention and are not intended to limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. A sheath tube connected to a deep vein dialysis catheter, comprising a sheath tube body (1), a connecting tube (2) and a dialysis catheter (4); the connecting tube (2) is arranged on the side of the sheath tube body (1); characterized in that: A cylindrical partition (9) is arranged in the middle of the inner part of the sheath tube body (1); a rotating shaft (10) is arranged at the center of the partition (9), and the top of the partition (9) is rotatably connected to a cylindrical rotating plate (8) via the rotating shaft (10); a shaft seat (11) is arranged at the top of the rotating plate (8), and a transmission shaft (7) is connected to the top of the shaft seat (11), and a knob (6) is fixedly installed on the top of the transmission shaft (7); the rotating plate (8) and the partition (9) are respectively provided with a second connecting hole (13) and a first connecting hole (12) along the same diameter circle; the bottom of the sheath tube body (1) and one end of the dialysis catheter (4) are both provided with external threads, and a nut (3) is installed on the external threads of the sheath tube body (1); the diameter of the rotating plate (8) is smaller than the diameter of the partition (9), and the second connecting hole (13) on the rotating plate (8) is connected to the first connecting hole (12) on the partition (9).

2. A sheath tube for connecting a deep vein dialysis catheter according to claim 1, characterized in that: A guide wire (5) is slidably mounted between the first connecting hole (12) and the second connecting hole (13); a contact seat (14) is provided at the end of the guide wire (5) inserted into one end of the sheath body (1); a spherical contact (15) is connected to the bottom of the contact seat (14).

3. A sheath tube for connecting a deep vein dialysis catheter according to claim 2, characterized in that: The connection between the spherical contact (15) and the contact seat (14) is a rotational connection.

4. The sheath tube for connecting a deep vein dialysis catheter according to claim 2, characterized in that: The connecting hole 1 (12) and the connecting hole 2 (13) have the same diameter, and the diameter of the connecting hole 1 (12) is compatible with the diameter of the guide wire (5).

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