CN116983532A - Positive and negative pressure attraction magnetic attraction open-circuit automatic tube-placing catheter device and tube-placing method - Google Patents

Abstract

The invention relates to a positive and negative pressure magnetic suction open-circuit automatic catheter placement catheter device and a catheter placement method, which include an elastic open-circuit bag tube, a positive and negative pressure fixing device, an insertion tube, an electromagnetic propulsion device and a host; one end of the elastic open-circuit bag tube A positive and negative pressure fixing device is connected to the side of the bag. The electromagnetic propulsion device includes a magnet, a solenoid, a first power supply, a second power supply and a switch. The magnet is in the shape of a ring and is fixed on the elastic open-circuit bag tube close to the positive and negative pressure fixing device. One end of the solenoid is fixed on the inner wall of the head end of the inserted tube. One end of the solenoid is connected to the positive pole of the first power supply and the negative pole of the second power supply respectively. The other end of the solenoid is connected to the switch; the head of the inserted tube The flexible open-circuit bag tube is inserted into the end of the tube. The head of the inserted tube is close to the magnet. The tail of the inserted tube is installed in the main unit. The positive and negative pressure fixing device is connected to the main unit. A dual-purpose pump for inflating and suctioning is installed inside the main unit. Connect the pump to the positive and negative pressure fixtures.

Description

A positive and negative pressure suction magnetic suction open-circuit automatic catheter placement catheter device and catheter placement method

Technical field

The present invention relates to the technical field of medical equipment, and more specifically, to a positive and negative pressure magnetic suction open-circuit automatic catheter placement catheter device and a catheter placement method.

Background technique

In clinical work, due to the needs of surgery or medical conditions, patients often need to insert catheters into the body. Currently, medical staff usually directly insert the catheter into the cavity manually. However, due to uneven force and unskilled techniques of medical staff, patients often suffer from bring greater pain;

On the other hand, when medical staff are required to work with the patient in the CT scanning room to intubate the patient, the medical staff will frequently receive radiation, affecting their health.

The preceding description is intended to provide general background information and does not necessarily constitute prior art.

Contents of the invention

The object of the present invention is to provide a positive and negative pressure suction magnetic suction open-circuit automatic catheter placement catheter device and a catheter placement method. The positive and negative pressure suction magnetic suction open-circuit automatic catheter placement catheter device realizes the automation of catheter placement and saves labor costs to the greatest extent. , avoiding the pain caused to patients by uneven force and unskilled techniques during manual catheter placement.

The invention provides a positive and negative pressure magnetic suction open-circuit automatic catheter catheter device, which includes an elastic open-circuit bag tube, a positive and negative pressure fixing device, an insertion tube, an electromagnetic propulsion device and a host machine; the side surface of one end of the elastic open-circuit bag tube is connected to the positive and negative pressure fixing device, and the electromagnetic propulsion device includes a magnet, a solenoid, a first power supply, a second power supply and a switch; the magnet is in the shape of a ring, and the magnet is fixed on the elastic open circuit One end of the bag tube is close to the positive and negative pressure fixing device, and the solenoid is fixed on the inner wall of the head end of the insertion tube. One end of the solenoid is connected to the positive electrode of the first power supply and the second The negative pole of the power supply is connected, and the other end of the solenoid is connected to the switch; the head of the insertion tube is inserted into the elastic open-circuit bag tube, and the head of the insertion tube is close to the magnet. The tail end of the inlet pipe is installed in the main machine, and the positive and negative pressure fixing device is connected to the main machine. An inflatable and suction dual-purpose pump is installed inside the main engine. The inflatable and suction dual-purpose pump and the positive and negative pressure fixing device are installed inside the main engine. connect.

Further, the switch includes a first state, a second state and a third state, the first state is a conduction state with the negative pole of the first power supply, and the second state is a conduction state with the positive pole of the second power supply, so The third state is the open circuit state.

Further, the positive and negative pressure fixing device includes a connecting pipe, a ring pipe, a fixed pipe and a suction cup; the ring pipe is connected with a plurality of fixed pipes connected to the inside of the ring pipe, and the fixed pipe is additionally connected to the ring pipe. One end is connected to the suction cup; one end of the connecting tube is connected to the inside of the ring tube, and the other end of the connecting tube is connected to the inflatable and suction dual-purpose pump; one end of the elastic open-circuit bag tube is close to the magnet There are multiple fixing holes on the side, the fixing tube is inserted into the fixing hole, the suction cup is located outside the tube of the elastic open-circuit bag tube, the connecting tube and the ring tube are located on the elastic open-circuit bag tube. inside the tube.

Further, the suction cup is in the shape of a trumpet with one end open, and the fixed tube communicating with the inside of the suction cup is connected to the bottom of the suction cup.

Further, the magnet is provided with an arc-shaped smooth surface at one end away from the elastic open-circuit bladder tube.

Further, a sliding rheostat is connected to the line between the solenoid and the first power supply and the second power supply.

Further, the main machine also includes a tube cavity, a spring, a piston and a one-way valve. The piston is installed in the tube cavity. The spring is provided between the piston and the bottom of the tube cavity. The one-way valve that allows gas to enter is provided on the side of the lower end of the tube cavity; the tail end of the insertion tube is placed in the tube cavity, and the tail end of the insertion tube rests on the piston .

Further, the inner diameter of the ring tube and the annular magnet are both larger than the outer diameter of the insertion tube.

The present invention also provides a catheter placement method, which is applied to the above-mentioned positive and negative pressure magnetic suction open-circuit automatic catheter placement catheter device.

Further, the catheter placement method includes the following steps:

S1: Place the elastic open-circuit capsule tube at the mouth of the cavity, and turn the switch to the first state. At this time, the magnet at the end of the elastic open-circuit capsule tube and the magnetic pole at one end of the solenoid are the same. Therefore, according to the repulsion of like poles, under the push of magnetic force Down, the elastic open-circuit sac moves forward and enters the lumen;

S2: At this time, adjust the positive and negative pressure fixing device to the adsorption state, and adsorb the elastic open-circuit bladder tube to the cavity;

S3: Turn the switch to the second state. At this time, the magnet at the end of the elastic open-circuit bag tube and the magnetic pole at one end of the solenoid are different, so the opposite poles attract each other. Under the attraction of the magnetic force, the tube is placed in the elastic open-circuit bag. forward movement within the tube;

S4: At this time, adjust the positive and negative pressure fixing device to the blowing state, and detach the elastic open-circuit bladder tube from the lumen;

S5: Repeat the operations of steps S1 to S4 until the insertion tube is inserted into the designated position of the lumen;

S6: Pull out the elastic open-circuit bag tube and positive and negative pressure fixation device.

The positive and negative pressure magnetic suction open-circuit automatic catheter placement catheter device of the present invention can insert the catheter into the cavity just by adjusting the state of the switch, eliminating the need for manual catheter placement and realizing the automation of catheter placement. It saves labor costs to the greatest extent; at the same time, the tube is placed through push and suction by magnetic force, and the push and suction force are uniform, avoiding the pain caused to the patient by uneven force and unskilled techniques during manual tube placement; on the other hand, through adjustment The switch can be controlled remotely.

Description of drawings

Figure 1 is a schematic structural diagram of the elastic open-circuit bag tube of the positive and negative pressure suction magnetic open-circuit automatic catheterization catheter device provided by an embodiment of the present invention.

Figure 2 is a schematic structural diagram of the magnet of the positive and negative pressure magnetic suction open-circuit automatic catheter catheter device provided by the embodiment of the present invention.

Figure 3 is a schematic structural diagram of the positive and negative pressure fixing device of the positive and negative pressure suction magnetic open-circuit automatic catheter catheter device provided by an embodiment of the present invention.

Figure 4 is a schematic structural diagram of the combination of the elastic open-circuit bag tube and the positive and negative pressure fixing device of the positive and negative pressure suction magnetic open circuit automatic catheter device provided by the embodiment of the present invention.

Figure 5 is a schematic structural diagram of the combination of the insertion tube and the solenoid of the positive and negative pressure magnetic suction open-circuit automatic catheter catheter device provided by the embodiment of the present invention.

Figure 6 is a schematic diagram of the internal principle circuit of the electromagnetic propulsion device of the positive and negative pressure suction magnetic open-circuit automatic catheter placement catheter device provided by the embodiment of the present invention.

Figure 7 is a schematic plan view of the positive and negative pressure magnetic suction open-circuit automatic catheter placement catheter device provided by an embodiment of the present invention.

Figure 8 is a schematic plan view of the forward state of the elastic open-circuit bladder tube of the positive and negative pressure suction magnetic open-circuit automatic catheter catheter device provided by the embodiment of the present invention.

9 is a schematic plan view of the adsorption state of the positive and negative pressure fixing device of the positive and negative pressure suction magnetic open-circuit automatic catheter catheter device provided by the embodiment of the present invention.

FIG. 10 is a schematic plan view of the advanced state of the inserted tube of the positive and negative pressure magnetic suction open-circuit automatic catheter device provided by the embodiment of the present invention.

11 is a schematic plan view of the positive and negative pressure fixing device of the positive and negative pressure suction magnetic open-circuit automatic catheter catheter device in the blowing state according to the embodiment of the present invention.

Figure 12 is a schematic plan view of the insertion tube into the cavity of the positive and negative pressure suction magnetic open-circuit automatic catheter device provided by the embodiment of the present invention.

Figure 13 is a schematic flowchart of a catheter placement method according to an embodiment of the present invention.

The reference signs and components involved in the drawings are as follows:

1. Elastic open-circuit bladder tube 11. Fixing hole 2. Positive and negative pressure fixing device

21. Connecting pipe 22. Ring pipe 23. Fixed pipe

24. Suction cup 3. Insertion tube 4. Electromagnetic propulsion device

41. Magnet 42. Solenoid 43. First power supply

44. Second power supply 45. Switch 46. Arc-shaped smooth surface

47. Sliding rheostat 5. Host 51. Tube cavity

52. Spring 53. Piston 54. One-way valve

6. Tunnel

Detailed ways

Specific implementations of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the invention but are not intended to limit the scope of the invention.

The terms "first", "second", "third", "fourth", etc. in the description and claims of the present invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. .

Example 1

Figure 1 is a schematic structural diagram of the elastic open-circuit bag tube of the positive and negative pressure suction magnetic open-circuit automatic catheter catheter device provided by an embodiment of the present invention. Figure 2 is a positive and negative pressure magnetic suction open-circuit automatic catheter placement catheter provided by an embodiment of the present invention. The structural schematic diagram of the magnet of the device. Figure 3 is the structural schematic diagram of the positive and negative pressure fixing device of the positive and negative pressure magnetic open-circuit automatic catheter device provided by the embodiment of the present invention. Figure 4 is the positive and negative pressure fixed device provided by the embodiment of the present invention. A schematic structural diagram of the combination of the elastic open-circuit bag tube and the positive and negative pressure fixing device of the magnetic suction open-circuit automatic catheter device. Figure 5 shows the insertion tube and the insertion tube of the positive and negative pressure magnetic suction open-circuit automatic catheter device provided by the embodiment of the present invention. The structural schematic diagram of the solenoid combination. Figure 6 is a schematic diagram of the internal principle circuit of the electromagnetic propulsion device of the positive and negative pressure magnetic open-circuit automatic catheter catheter device provided by the embodiment of the present invention. Figure 7 is the positive and negative pressure provided by the embodiment of the present invention. Schematic diagram of the planar structure of the suction magnetic open-circuit automatic catheter placement catheter device. Please refer to Figures 1 to 7. The positive and negative pressure suction magnetic open-circuit automatic catheter placement catheter device provided by the embodiment of the present invention includes an elastic open-circuit bag tube 1, a positive and negative pressure fixation device 2, an insertion tube 3, and an electromagnetic propulsion device 4 and the main machine 5; the positive and negative pressure fixing device 2 is connected to the side of one end of the elastic open-circuit bag tube 1;

As shown in Figures 6 and 7, the electromagnetic propulsion device 4 of the present invention includes a magnet 41, a solenoid 42, a first power supply 43, a second power supply 44 and a switch 45; the magnet 41 is in the shape of a ring, and the magnet 41 is in the shape of a ring. 41 is fixed on one end of the elastic open-circuit bag tube 1 close to the positive and negative pressure fixing device 2, the solenoid 42 is fixed on the inner wall of the head end of the insertion tube 3, one end of the solenoid 42 and The positive pole of the first power supply 43 and the negative pole of the second power supply 44 are connected, and the other end of the solenoid 42 is connected to the switch 45; the head of the insertion tube 3 is inserted into the elastic open circuit bag Tube 1, the head of the inserted tube 3 is close to the magnet 41, the tail of the inserted tube 3 is installed in the main machine 5, the positive and negative pressure fixing device 2 is connected to the main machine 5, and the inside of the main machine 5 A dual-purpose pump for inflation and suction is installed, and the dual-purpose pump for inflation and suction is connected to the positive and negative pressure fixing device 2 .

It should be noted that the switch 45 of the present invention includes a first state, a second state and a third state. The first state is a negative conduction state with the first power supply 43 , and the second state is a state with the negative pole of the second power supply 44 . The positive electrode is in a conductive state, and the third state is an off-circuit state.

When the switch 45 is turned to the first state, the magnet 41 at the end of the elastic open-circuit bag tube 1 and the magnetic pole at one end of the solenoid 42 are the same, and the two will repel (according to Ampere's rule, when the solenoid 42 is energized, Both ends will form electromagnetic magnetic poles respectively); when the switch 45 is turned to the second state, the magnet 41 at the end of the elastic open-circuit bag tube 1 and the magnetic poles at one end of the solenoid 42 are different, and the two will attract.

Figure 8 is a schematic plan view of the elastic open-circuit bag tube in the advanced state of the positive and negative pressure magnetic suction open-circuit automatic catheter device provided by the embodiment of the present invention. Figure 9 is the positive and negative pressure magnetic suction open-circuit automatic catheter device provided by the embodiment of the present invention. Figure 10 is a schematic plan view of the positive and negative pressure suction magnetic open-circuit automatic catheter device in the advanced state of the inserted tube. 11 is a schematic plan view of the positive and negative pressure fixing device and the air blowing state of the positive and negative pressure suction magnetic open-circuit automatic catheter catheter device provided by the embodiment of the present invention. Figure 12 is the positive and negative pressure fixing device provided by the embodiment of the present invention. Schematic diagram of the planar structure of the insertion tube of the pressure-suction magnetic suction open-circuit automatic catheterization catheter device into the lumen. Please refer to Figures 8 to 12. When using the positive and negative pressure suction magnetic open-circuit automatic catheter catheter device of the present invention, place the elastic open-circuit bag tube 1 at the port 6 of the lumen, and turn the switch 45 to the first state. At this time The magnet 41 at the end of the elastic open-circuit bag tube 1 and the magnetic pole at one end of the solenoid 42 are the same, so according to the mutual repulsion of the same poles, driven by the magnetic force, the elastic open-circuit bag tube 1 moves forward and enters the cavity 6 (as shown in Figure 8 shown); at this time, the positive and negative pressure fixing device 2 is adjusted to the adsorption state through the inflatable and suction dual-purpose pump inside the host 5, and the elastic open-circuit bag tube 1 is adsorbed on the cavity 6 (as shown in Figure 9); The switch 45 is in the second state. At this time, the magnet 41 at the end of the elastic open-circuit bag tube 1 and the magnetic pole at one end of the solenoid 42 are different, so according to the attraction of the opposite poles, under the attraction of the magnetic force, the elastic tube 3 is inserted The open-circuit bag tube 1 moves forward (as shown in Figure 10); at this time, the positive and negative pressure fixing device 2 is adjusted to the blowing state through the inflatable and suction dual-purpose pump inside the host 5, and the elastic open-circuit bag tube 1 is moved from the cavity 6 and disengage (as shown in Figure 11); repeat the above operations until the insertion tube 3 is inserted into the designated position of the cavity 6; finally pull out the elastic open-circuit bag tube 1 and the positive and negative pressure fixing device 2 (as shown in Figure 12 Show).

The positive and negative pressure suction magnetic open-circuit automatic catheter device of the present invention can insert the insertion tube 3 into the cavity 6 simply by adjusting the state of the switch 45, eliminating the need for manual insertion and realizing the insertion of the catheter. Automation to save labor costs to the greatest extent;

At the same time, magnetic force is used to push and attract the catheter, and the pushing force and suction force are uniform, which avoids the pain caused to the patient by uneven force and unskilled techniques during manual catheter placement;

On the other hand, remote control can be achieved by adjusting the switch 45; for example, a doctor needs to be in the CT scanning room with the patient to place a tube on the patient. By controlling the adjustment switch 45 remotely, the doctor's risk of frequently receiving radiation can be reduced.

Referring further to Figure 3, the positive and negative pressure fixing device 2 of the present invention includes a connecting pipe 21, a ring pipe 22, a fixed pipe 23 and a suction cup 24; the ring pipe 22 is connected with a plurality of pipes connected to the inside of the ring pipe 22 The fixed pipe 23 has the suction cup 24 connected to the other end of the fixed pipe 23; one end of the connecting pipe 21 is internally connected to the ring pipe 22, and the other end of the connecting pipe 21 is used for both inflating and suctioning. Pump connection; a plurality of fixing holes 11 are provided on the side of one end of the elastic open-circuit bag tube 1 close to the magnet 41, the fixing tube 23 is inserted into the fixing holes 11, and the suction cup 24 is located on the elastic Outside the tube of the open-circuit bag tube 1 , the connecting tube 21 and the ring tube 22 are located inside the tube of the elastic open-circuit bag tube 1 .

When the inflatable and suction dual-purpose pump inhales, the suction cup 24 is adsorbed on the inner wall of the cavity 6 through the connecting pipe 21, the ring pipe 22 and the fixed pipe 23, thereby adsorbing the elastic open-circuit bag tube 1 to the cavity 6 ;

When the inflating and suction dual-purpose pump is inflating, the suction cup 24 is separated from the cavity 6 through the connecting pipe 21, the ring pipe 22 and the fixed pipe 23.

Specifically, the suction cup 24 is in the shape of a trumpet with one end open, and the fixed tube 23 communicating with the inside of the suction cup 24 is connected to the bottom of the suction cup 24 . It should be noted that the horn-shaped suction cup 24 improves the stability of adsorption and fixation.

Referring further to FIG. 1 , the magnet 41 is provided with an arc-shaped smooth surface 46 at one end away from the elastic open-circuit bladder tube 1 . Therefore, the magnet 41 will not cause damage to the inner wall of the cavity 6 when the elastic open-circuit bladder tube 1 advances.

Referring further to FIG. 6 , a sliding rheostat 47 is connected to the line between the solenoid 42 and the first power supply 43 and the second power supply 44 . By adjusting the sliding rheostat 47 to change the current flowing through the solenoid 42, the magnetic strength is adjusted, thereby further adjusting the thrust and suction.

Referring further to FIG. 7 , the main machine 5 also includes a tube cavity 51 , a spring 52 , a piston 53 and a one-way valve 54 . The piston 53 is installed in the tube chamber 51 . Between the piston 53 and the tube chamber 51 The spring 52 is provided between the bottoms, and the one-way valve 54 that allows gas to enter is provided on the side of the lower end of the tube cavity 51; the tail end of the insertion tube 3 is placed in the tube cavity 51 , the rear end of the insertion tube 3 is against the piston 53 .

It should be noted that when the insertion tube 3 advances under the action of suction, the piston 53 will also move upward as the insertion tube 3 moves upward. When the insertion tube 3 pushes the elastic open-circuit bag tube under the action of thrust, When 1 moves forward, since the one-way valve 54 is a one-way valve, the gas inside the tube cavity 51 at the lower end of the piston 53 cannot be discharged at this time, so that the support piston 53 cannot move down, so that the inserted tube 3 will not return under the action of thrust. shrink.

Furthermore, the inner diameters of the ring tube 22 and the annular magnet 41 are both larger than the outer diameter of the insertion tube 3 . This facilitates the extraction of the elastic open-circuit bladder tube 1 and the positive and negative pressure fixing device 2 .

Figure 13 is a schematic flowchart of a catheter placement method according to an embodiment of the present invention. Please refer to Figure 13. The present invention also provides a catheter placement method, which is applied to the above-mentioned positive and negative pressure magnetic suction open-circuit automatic catheter placement catheter device.

Specifically, the catheter placement method includes the following steps:

S1: Place the elastic open-circuit bag tube 1 at port 6 of the cavity, and turn the switch 45 to the first state. According to Ampere's rule, electromagnetic N poles and S poles will be formed at both ends of the energized solenoid 42. At this time The magnet 41 at the end of the elastic open-circuit bag tube 1 and the magnetic pole at one end of the solenoid 42 are the same, so according to the mutual repulsion of the same poles, driven by the magnetic force, the elastic open-circuit bag tube 1 moves forward and enters the cavity 6 (as shown in Figure 8 shown);

S2: At this time, adjust the positive and negative pressure fixing device 2 to the adsorption state, and adsorb the elastic open-circuit bladder tube 1 to the cavity 6 (as shown in Figure 9);

S3: Turn the switch 45 to the second state. At this time, the magnet 41 at the end of the elastic open-circuit bag tube 1 and the magnetic pole at one end of the solenoid 42 are different. Therefore, according to the attraction of the opposite poles, under the attraction of the magnetic force, the tube is placed. 3. The elastic open-circuit bladder tube 1 moves forward (as shown in Figure 10);

S4: At this time, adjust the positive and negative pressure fixing device 2 to the blowing state, and detach the elastic open-circuit bladder tube 1 from the cavity 6 (as shown in Figure 11);

S5: Repeat the operations of steps S1 to S4 until the insertion tube 3 is inserted into the designated position of the lumen 6;

S6: Pull out the elastic open-circuit bag tube 1 and the positive and negative pressure fixation device 2 (as shown in Figure 12).

Based on the above description, it can be seen that the advantages of the present invention are:

1. The positive and negative pressure suction magnetic open-circuit automatic catheter device of the present invention can insert the catheter into the cavity just by adjusting the status of the switch. There is no need for manual catheter placement, and the catheter placement is realized. Automation saves labor costs to the greatest extent;

2. The positive and negative pressure suction magnetic open-circuit automatic catheter placement catheter device of the present invention uses magnetic force to push and attract for catheter placement. The pushing force and suction force are uniform, which avoids uneven force and unskilled techniques during manual catheter placement, which can cause pain to the patient. the pain that comes;

3. The positive and negative pressure magnetic suction open-circuit automatic catheter placement catheter device of the present invention can be remotely controlled by adjusting the switch.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention. should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (10)

1. The positive and negative pressure attraction magnetic attraction open-circuit automatic tube-placing catheter device is characterized by comprising an elastic open-circuit balloon tube (1), a positive and negative pressure fixing device (2), an imbedding tube (3), an electromagnetic propulsion device (4) and a host machine (5);

the side surface of one end part of the elastic open-circuit bag tube (1) is connected with the positive and negative pressure fixing device (2), and the electromagnetic propulsion device (4) comprises a magnet (41), a solenoid (42), a first power supply (43), a second power supply (44) and a switch (45);

the magnet (41) is in a circular ring shape, the magnet (41) is fixed at one end of the elastic open-circuit bag tube (1) close to the positive and negative pressure fixing device (2), the solenoid (42) is fixed on the inner wall of the head end of the insertion tube (3), one end of the solenoid (42) is respectively connected with the positive electrode of the first power supply (43) and the negative electrode of the second power supply (44), and the other end of the solenoid (42) is connected with the switch (45);

the head of the imbedding tube (3) is inserted into the elastic open-circuit bag tube (1), the head of the imbedding tube (3) is close to the magnet (41), the tail of the imbedding tube (3) is installed in the host (5), the positive and negative pressure fixing device (2) is connected with the host (5), the internal installation of the host (5) is provided with an inflation and suction dual-purpose pump, and the inflation and suction dual-purpose pump is connected with the positive and negative pressure fixing device (2).

2. The positive and negative pressure suction magnetically-open automatic tube-placing catheter device according to claim 1, wherein the switch (45) comprises a first state, a second state and a third state, the first state is a state of being conducted with a negative electrode of the first power supply (43), the second state is a state of being conducted with a positive electrode of the second power supply (44), and the third state is an off state.

3. The positive and negative pressure suction magnetic attraction open automatic tube-placing catheter device according to claim 1, wherein the positive and negative pressure fixing device (2) comprises a connecting tube (21), a ring tube (22), a fixing tube (23) and a sucker (24);

a plurality of fixed pipes (23) communicated with the inside of the annular pipe (22) are connected to the annular pipe (22), and the other ends of the fixed pipes (23) are connected with suckers (24); one end of the connecting pipe (21) is communicated with the inside of the ring pipe (22), and the other end of the connecting pipe (21) is connected with the inflation and inspiration dual-purpose pump;

the side of the elastic open-circuit balloon tube (1) close to one end of the magnet (41) is provided with a plurality of fixing holes (11), the fixing tube (23) is inserted into the fixing holes (11), the sucker (24) is positioned outside the tube of the elastic open-circuit balloon tube (1), and the connecting tube (21) and the ring tube (22) are positioned in the tube of the elastic open-circuit balloon tube (1).

4. The positive and negative pressure attraction magnetic attraction open automatic tube-placing catheter device according to claim 3, wherein the sucker (24) is in a horn shape with one end open, and the bottom of the sucker (24) is connected with the fixed tube (23) communicated with the inside of the sucker (24).

5. The positive and negative pressure attraction magnetic attraction open automatic tube-placing catheter device according to claim 1, wherein the magnet (41) is provided with an arc-shaped smooth surface (46) at one end far away from the elastic open-circuit balloon tube (1).

6. The positive and negative pressure suction magnetic attraction open automatic tube-setting catheter device according to claim 1, characterized in that a slide rheostat (47) is connected on the line between the solenoid (42) and the first power supply (43), the second power supply (44).

7. The positive and negative pressure suction magnetic suction open automatic tube-placing catheter device according to claim 1, characterized in that the host (5) further comprises a lumen (51), a spring (52), a piston (53) and a one-way valve (54), the piston (53) is installed in the lumen (51), the spring (52) is arranged between the piston (53) and the bottom of the lumen (51), and the one-way valve (54) allowing gas to enter is arranged on the side surface of the lower end of the lumen (51); the tail of the imbedding tube (3) is placed in the tube cavity (51), and the tail of the imbedding tube (3) is abutted against the piston (53).

8. The positive and negative pressure attraction magnetic attraction open automatic tube-placing catheter device according to claim 1, characterized in that the inner diameters of the ring tube (22) and the ring-shaped magnet (41) are larger than the outer diameter of the tube (3).

9. A method for placing a tube, which is characterized by being applied to the positive and negative pressure attraction magnetic attraction open-circuit automatic tube placing catheter device in any one of claims 1-8.

10. The method of catheterization according to claim 8, characterized in that the method of catheterization comprises the steps of:

s1: placing the elastic open-circuit balloon tube (1) at the opening of the cavity (6), and pulling the switch (45) in a first state (according to ampere rule, an electromagnetic N pole and an electromagnetic S pole are respectively formed at two ends of the energized solenoid (42)), wherein the magnetic poles at one end of the magnet (41) and one end of the solenoid (42) at the end of the elastic open-circuit balloon tube (1) are the same, so that the elastic open-circuit balloon tube (1) moves forwards under the pushing of magnetic force according to homopolar repulsion and enters the cavity (6);

s2: at the moment, the positive and negative pressure fixing device (2) is adjusted to be in an adsorption state, and the elastic open-circuit cyst tube (1) is adsorbed on the cavity (6);

s3: the switch (45) is set in a second state, at the moment, the magnetic poles of the magnet (41) at the end part of the elastic open-circuit bag tube (1) and one end of the solenoid (42) are different, so that the imbedding tube (3) carries the elastic open-circuit bag tube (1) to move forwards under the attraction of magnetic force according to the attraction of different poles;

s4: at the moment, the positive and negative pressure fixing device (2) is adjusted to be in an air blowing state, and the elastic open-circuit balloon tube (1) is separated from the cavity channel (6);

s5: repeating the operations of the steps S1-S4 until the imbedding pipe (3) is imbedded in the appointed position of the cavity channel (6);

s6: and the elastic open-circuit cyst tube (1) and the positive and negative pressure fixing device (2) are pulled out.