CN113491821A

CN113491821A - Radiography pipe anti-reflux device with adjustable joint size

Info

Publication number: CN113491821A
Application number: CN202110710624.2A
Authority: CN
Inventors: 田培华
Original assignee: Nanjing Maichuang Medical Technology Co ltd
Current assignee: Nanjing Maichuang Medical Technology Co ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2021-10-12

Abstract

The invention discloses a connector size adjustable contrast catheter anti-reflux device, which comprises: the anti-reflux device is arranged at the tail end of the catheter, the end part of the guide wire penetrates through the anti-reflux device and the catheter and extends to the front end of the catheter, the front end of the catheter is further provided with an air bag, and the middle part of the air bag is provided with a connecting hole and is sleeved on the catheter through the connecting hole. According to the invention, the anti-reflux device is arranged at the tail end of the catheter, the clamping plate is pushed by rotating the adjusting button to clamp the catheter, the communicating pipe is blocked, and the air bag is arranged at the front end of the catheter, and the air bag is close to the surface of the guide wire after being inflated, so that the sealing effect is further improved, the outflow of contrast medium is avoided, the air bag has a certain expansion effect while playing a sealing effect, the air bag is soft in texture, a certain protection effect can be played, and the guide wire is limited.

Description

Radiography pipe anti-reflux device with adjustable joint size

Technical Field

The invention relates to the technical field of medical instruments, in particular to a connector size-adjustable contrast catheter anti-reflux device.

Background

The shadow catheter is a key device for percutaneous angiography, and has proper hardness, elasticity, flexibility and torsion; should have good X-ray transmission performance; good shape memory, smooth wall, high contrast performance, and controllable thrombosis performance. The radiography conduit is a long rubber tube and is mainly used for providing the conduit so that the contrast agent can be smoothly introduced into the blood vessel to generate the radiography effect. Therefore, a contrast catheter should have the following basic conditions: the inner pipe is soft and smooth to generate high flow; the developing performance is high; the non-traumatic head end needs to have extremely high original shape keeping performance and is not easy to deform; can allow the guide wire to pass through easily, etc. The contrast catheter is a key device for percutaneous angiography, and has proper hardness, elasticity, flexibility and torsion; should have good X-ray transmission performance; good shape memory, smooth wall, high contrast performance, and controllable thrombosis performance. The radiography conduit is a long rubber tube and is mainly used for providing the conduit so that the contrast agent can be smoothly introduced into the blood vessel to generate the radiography effect. Therefore, a contrast catheter should have the following basic conditions: the inner pipe is soft and smooth to generate high flow; the developing performance is high; the non-traumatic head end needs to have extremely high original shape keeping performance and is not easy to deform; can allow the guide wire to pass through easily, etc.

At present, the prior radiography catheters have the following problems: (1) a gap exists between the catheter and the guide wire, after the contrast fluid is introduced, the contrast fluid can extend to the gap and flow out, and the guide wire can slide in the catheter, so that the examination efficiency is influenced; (2) the anti-reflux device of the radiography catheter has poor adaptability, and the anti-reflux device with single specification can only correspond to catheters with one size. For this reason, a new scheme needs to be designed to give improvements.

Disclosure of Invention

The invention aims to provide a connector size-adjustable contrast catheter anti-reflux device, which solves the problem that a gap exists between a catheter and a guide wire, contrast fluid can extend to the gap to flow out after the contrast fluid is introduced, and the guide wire can slide in the catheter to influence the inspection efficiency; the anti-reflux device for the radiography catheter has poor adaptability, and the anti-reflux device with a single specification can only correspond to the catheter with one size, so that the practical use requirement is met.

In order to achieve the purpose, the invention provides the following technical scheme: an anti-reflux device for a contrast catheter with an adjustable connector size, comprising: the anti-reflux device is arranged at the tail end of the catheter, the end part of the guide wire penetrates through the anti-reflux device and the catheter and extends to the front end of the catheter, the front end of the catheter is also provided with an air bag, and the middle part of the air bag is provided with a connecting hole and is sleeved on the catheter through the connecting hole;

prevent against current device is including adjusting the box and adjusting the head, it is provided with communicating pipe to adjust the box and be square structure and middle part, the communicating pipe both ends extend to respectively adjusts the box both sides, adjust first fixed connection and be connected with communicating pipe at the front end and the tip of adjusting the box, adjust the front end of head and install the joint, connect including three and be one-level joint, second grade joint and tertiary joint respectively, three joint is tubulose and the surface is provided with the screw thread respectively and passes through the end-to-end connection of screw thread and pipe, and the size of three joint is reduced to tertiary joint direction in proper order by one-level joint.

In a preferred embodiment of the present invention, an end of the secondary joint extends into the primary joint and is connected to a seal ring, an end of the tertiary joint extends into the secondary joint and is connected to a seal ring, a first spring is installed inside the secondary joint and the primary structure, and an end of the first spring is connected to the seal ring.

As a preferred embodiment of the present invention, a guide structure is disposed inside the adjusting head, and the front end of the guide structure tapers toward the primary joint and has an inner diameter the same as that of the tertiary joint.

As a preferred embodiment of the present invention, an adjusting bin and a clamping bin are arranged inside the adjusting box, the clamping bin is arranged in the middle of the adjusting box and is located at the communicating pipe, two ends inside the clamping bin are respectively and movably connected with a clamping plate, a connecting rod is installed at the back of the clamping plate, and the tail end of the connecting rod extends towards two sides of the adjusting box and penetrates through the adjusting bin.

As a preferred embodiment of the present invention, two ends of the adjusting box are further provided with adjusting buttons, respectively, the adjusting buttons are tubular, and connecting pipes are disposed on opposite surfaces of the two adjusting buttons, the connecting pipes are rotatably connected with the adjusting box, and end portions of the connecting pipes extend into the adjusting bin and are fixed with connecting plates.

As a preferred embodiment of the present invention, the inner walls of the connecting tube and the adjusting knob are provided with internal threads, the surface of the connecting rod is provided with a thread structure matched with the internal threads, and the surface of the connecting tube is further sleeved with a second spring.

In a preferred embodiment of the present invention, the surface of the catheter is provided with an air tube connected to a balloon, the balloon is inflated to form an umbrella-shaped structure which is tapered from back to front, and the front end of the balloon is attached to the surface of the guide wire.

Compared with the prior art, the invention has the following beneficial effects:

(1) according to the invention, the anti-reflux device is arranged at the tail end of the catheter, the clamping plate is pushed to clamp the catheter by rotating the adjusting button, the communicating pipe is blocked, the air bag is arranged at the front end of the catheter, the air bag is close to the surface of the guide wire after being inflated, the sealing effect is further improved, the outflow of contrast medium is avoided, the air bag has a certain expansion effect while playing a sealing effect, the air bag is soft in texture, a certain protection effect can be played, and meanwhile, the guide wire is limited.

(2) The front end of the adjusting head is provided with the connectors of three specifications, the second-level connector and the third-level connector can be pushed through pushing, the connectors can connect catheters of three specifications, the applicability of the anti-reflux device is improved, the trouble caused by the fact that the radiography catheter is provided with the connectors of various specifications is reduced, and the connectors cannot influence guide wires in use.

Drawings

FIG. 1 is a view showing the structure of an anti-reflux device for an angiography catheter with an adjustable joint size according to the present invention;

FIG. 2 is a block diagram of the joint of the present invention;

FIG. 3 is a block diagram of the inflated state of the air bag of the present invention;

fig. 4 is an internal structural view of the conditioning case of the present invention.

In the figure, 1, an adjusting box; 2. an adjustment head; 3. a conduit; 4. an air tube; 5. an air bag; 6. a guide wire; 7. a guide structure; 8. a primary joint; 9. a secondary joint; 10. a tertiary joint; 11. a seal ring; 12. a first spring; 13. an adjusting knob; 14. a second spring; 15. a connecting rod; 16. a clamping chamber; 17. a splint; 18. a connecting plate; 19. a regulating bin; 20. a thread structure; 21. a communicating pipe; 22. and (4) connecting the pipes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: an anti-reflux device for a contrast catheter with an adjustable connector size, comprising: the anti-reflux device is arranged at the tail end of the catheter 3 and is connected with the tail end of the catheter 3 through threads, the end part of the guide wire 6 penetrates through the anti-reflux device and the catheter 3 and extends to the front end of the catheter 3, the front end of the catheter 3 is also provided with an air bag 5, the middle part of the air bag 5 is provided with a connecting hole and is sleeved on the catheter 3 through the connecting hole; the anti-reflux device comprises an adjusting box 1 and an adjusting head 2, wherein the adjusting box 1 is of a square structure, a communicating pipe 21 is arranged in the middle of the adjusting box 1, two ends of the communicating pipe 21 respectively extend to two sides of the adjusting box 1, the adjusting head 2 is fixedly connected to the front end of the adjusting box 1, the end part of the adjusting head is connected with the communicating pipe 21, the front end of the adjusting head 2 is provided with a connector, the connector comprises a first-level connector 8, a second-level connector 9 and a third-level connector 10, the three connectors are tubular, the outer surfaces of the three connectors are respectively provided with threads and are connected with the tail end of a conduit 3 through the threads, the sizes of the three connectors are sequentially reduced from the first-level connector 8 to the third-level connector 10, when the conduits 3 with different specifications are used, the conduit 3 is directly connected with the third-level connector 10 in a rotating mode, when the connectors are in contact with the end part of the conduit 3 and pushed when the second-level connector 9 is matched, the third-level connector 10 is collected into the second-level connector 9 and rotates, the external thread of the secondary joint 9 is tightly connected with the thread of the conduit 3, and the secondary joint 10 and the tertiary joint 10 are shrunk when the secondary joint is matched with the primary joint 8.

Further improved, as shown in fig. 2: the tip that the secondary connects 9 extends to the inside that the one-level connects 8 and is connected with sealing washer 11, the tip that the tertiary joint 10 extends to the secondary connects 9 inside and is connected with sealing washer 11, spring 12 is installed respectively to the inside of secondary joint 9 and one-level structure, the tip and the sealing washer 11 of spring 12 are connected, spring 12 gives secondary joint 9 and tertiary joint 10 pressure, and promote sealing washer 11, sealing washer 11 connects 8 with the one-level, the laminating of the opening inner wall that the secondary connects 9, play sealed effect, still possess spacing effect simultaneously, avoid secondary joint 9 and tertiary joint 10 to shift out.

Further improved, as shown in fig. 2: adjust head 2's inside and seted up guide structure 7, guide structure 7's front end to one-level joint 8 direction be the convergent form and the internal diameter is the same with tertiary 10 internal diameters of connecting, guide structure 7 leads seal wire 6, more makes things convenient for seal wire 6 to penetrate, forms spacing portion at guide structure 7's tip simultaneously, connects 8 inside springs 12 to the one-level and carries on spacingly.

Further improved, as shown in fig. 4: adjusting box 1's inside is provided with adjusting bin 19 and centre gripping storehouse 16, and centre gripping storehouse 16 sets up at adjusting box 1's middle part and is located communicating pipe 21 department, and the inside both ends of centre gripping storehouse 16 swing joint have splint 17 respectively, and connecting rod 15 is installed at splint 17's back, and connecting rod 15's end extends and runs through adjusting bin 19 to adjusting box 1 both sides. Adjusting buttons 13 are further respectively arranged at two ends of the adjusting box 1, the adjusting buttons 13 are tubular, connecting pipes 22 are arranged on opposite surfaces of the two adjusting buttons 13, the connecting pipes 22 are rotatably connected with the adjusting box 1, and end portions of the connecting pipes extend into the adjusting bin 19 and are fixed with connecting plates 18. Be provided with the internal thread on the inner wall of connecting pipe 22 and adjusting button 13, the surface of connecting rod 15 is provided with interior screw-thread fit's helicitic texture 20, spring two 14 has still been cup jointed on connecting pipe 22's surface, it drives regulating plate and control tube rotation to rotate adjusting button 13, the screw rod receives to rotate screw thread and the spacing influence in centre gripping storehouse 16 and can only carry out the removal of vertical direction, thereby adjust the distance between two splint 17, come to carry out the centre gripping to seal wire 6, still carry out the shutoff to communicating pipe 21 simultaneously, thereby play fixed and sealed effect, can drive splint 17 to the removal of adjusting button 13 direction after outwards pulling adjusting button 13, the regulation distance is connecting pipe 22's length, spring two 14 give connecting plate 18 pressure, make adjusting button 13 reset fast.

Specifically, the surface of pipe 3 is provided with trachea 4 be connected with gasbag 5, gasbag 5 aerifys the back and forms the umbrella structure by backward preceding convergent, and gasbag 5's front end and 6 surface laminatings of seal wire, and the umbrella structure that gasbag 5 aerifys the back and form plays the expansion effect to the inspection site, can also reach sealed effect simultaneously, 5 front ends of gasbag aerify back and 6 surface laminatings of seal wire, avoid the contrast medium to flow through the gap between seal wire 6 and the pipe 3.

When the invention is used, the anti-reflux device is arranged at the tail end of the catheter 3, the clamping plate 17 is pushed to clamp the catheter 3 by rotating the adjusting button 13, the communicating pipe 21 is plugged at the same time, the air bag 5 arranged at the front end of the catheter 3 is matched, the air bag 5 is close to the surface of the guide wire 6 after being inflated, the sealing effect is further improved, the outflow of contrast medium is avoided, the air bag 5 has a certain expansion effect while playing a sealing effect, the air bag 5 has soft texture and can play a certain protection effect, the guide wire 6 also plays a limiting role, the front end of the adjusting head 2 is provided with the joints with three specifications, the second-level joint and the third-level joint 10 can be pushed in by pushing, the joints can connect the catheters 3 with three specifications, the applicability of the anti-reflux device is improved, the trouble caused by the radiography catheter 3 being provided with the joints with various specifications is reduced, when the catheters 3 with different specifications are used, but pipe 3 matches tertiary joint 10 direct swivelling joint, and tertiary joint 10 takes in secondary joint 9 inside when will connecting 3 tip contacts of pipe and promoting during the matching secondary joint 9 to rotate, make secondary joint 9 external screw thread and pipe 3 threaded connection fastening can, with secondary and tertiary joint 10 shrink when matching with primary joint 8 can.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-reflux device for a contrast catheter with an adjustable connector size, comprising: anti-reflux device, pipe (3) and seal wire (6), its characterized in that: the anti-reflux device is installed at the tail end of the catheter (3), the end part of the guide wire (6) penetrates through the anti-reflux device and the catheter (3) and extends to the front end of the catheter (3), the front end of the catheter (3) is also provided with an air bag (5), and the middle part of the air bag (5) is provided with a connecting hole and is sleeved on the catheter (3) through the connecting hole;

prevent device against current is including adjusting box (1) and regulation head (2), it is square structure and middle part and is provided with communicating pipe (21) to adjust box (1) both ends to respectively communicating pipe (21), it is connected with communicating pipe (21) to adjust front end and tip that first (2) fixed connection adjusted box (1), adjust the front end of head (2) and install the joint, connect including three and be one-level joint (8), second grade joint (9) and tertiary joint (10) respectively, three joint is tubulose and surface and is provided with the screw thread respectively and through the end-to-end connection of screw thread and pipe (3), and the size of three joint is reduced in proper order to tertiary joint (10) direction by one-level joint (8).

2. The anti-reflux device for an angiography catheter with an adjustable joint size of claim 1, wherein: the tip that the second grade connects (9) extends to the inside that the one-level connects (8) and is connected with sealing washer (11), and the tip that tertiary joint (10) extends to the inside that second grade connects (9) and is connected with sealing washer (11), spring (12) are installed respectively to the inside of second grade joint (9) and one-level structure, the tip and the sealing washer (11) of spring (12) are connected.

3. The anti-reflux device for an angiography catheter with an adjustable joint size of claim 1, wherein: adjust the inside of head (2) and seted up guide structure (7), the front end of guide structure (7) connects (8) direction for convergent and internal diameter and tertiary joint (10) internal diameter the same to one-level.

4. The anti-reflux device for an angiography catheter with an adjustable joint size of claim 1, wherein: the inside of adjusting box (1) is provided with adjusting bin (19) and centre gripping storehouse (16), centre gripping storehouse (16) set up at the middle part of adjusting box (1) and are located communicating pipe (21) department, the inside both ends of centre gripping storehouse (16) swing joint respectively have splint (17), connecting rod (15) are installed to the back of splint (17), the end of connecting rod (15) is to adjusting box (1) both sides extension and run through adjusting bin (19).

5. The anti-reflux device for an angiography catheter with an adjustable joint size of claim 4, wherein: the both ends of regulating box (1) still are provided with adjusting knob (13) respectively, adjusting knob (13) are all provided with connecting pipe (22) on the opposite face of tubulose and two adjusting knob (13), connecting pipe (22) are rotated with regulating box (1) and are connected and the tip extends to regulation storehouse (19) in and be fixed with connecting plate (18).

6. The anti-reflux device for an angiography catheter with an adjustable joint size of claim 5, wherein: internal threads are arranged on the inner walls of the connecting pipe (22) and the adjusting button (13), a thread structure (20) matched with the internal threads is arranged on the surface of the connecting rod (15), and a second spring (14) is further sleeved on the surface of the connecting pipe (22).

7. The anti-reflux device for an angiography catheter with an adjustable joint size of claim 1, wherein: the surface of pipe (3) is provided with trachea (4) be connected with gasbag (5), gasbag (5) are aerifyd the back and are formed by the umbrella structure of backward preceding convergent, and the front end and the seal wire (6) surface laminating of gasbag (5).