Novel medical catheter device

Abstract

A novel medical catheter device comprises a catheter body and further comprises an annular air bag, inflation equipment and a prompt circuit. An annular groove is formed in the front outer portion of the main pipe, the air bag is sleeved with the groove, a front air inlet pipe is arranged at the side end of the main pipe, and the air bag is connected with the front air inlet pipe of the main pipe through a connecting hose. Internal threads are arranged inside the rear side of the main pipe; the side end of each branch pipe is provided with a rear air inlet pipe, the front side end of each branch pipe is smaller than the outer diameter of the rear side end, the front side end is provided with an external thread, and the rear side of each branch pipe is internally provided with an internal thread; the inflating equipment comprises a tank body, a valve, an inflating nozzle and an air hose, the valve and the inflating nozzle are mounted on the side of the tank body, two ends of the air hose are respectively inserted into one side of the valve and one end of a communicating pipe, and the other end of the communicating pipe is inserted into the rear side of a main pipe front air inlet pipe and the rear side of a branch pipe rear air inlet pipe; and the prompt circuit is arranged in the element box. According to the utility model, not only is convenience brought to doctors, but also better drug perfusion and radiography effects can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical supporting equipment, and particularly to a novel medical catheter device. Background Art

[0002] Medical catheters are devices required for angiography and drug perfusion. The catheter is made of medical PVC or TPU material. In order to facilitate entry into the corresponding position in the human body, it has the characteristics of being easily bendable and having a certain strength performance.

[0003] In the prior art, the length of the medical catheter cannot be spliced as needed. When the depth of entry into the human body is not much, using a long catheter will cause unnecessary waste. On the contrary, when the depth of entry into the human body is relatively large, using a short catheter cannot be used normally. Another problem is that for existing catheters, whether used for the perfusion of contrast agent or drugs, due to their consistent outer diameter before and after, the front end cannot effectively form a sealing effect with the internal organs of the human body (such as the urethra) after entering the human body. Then, the perfused contrast agent and drugs are likely to flow back out along the catheter from the human organs, which not only brings inconvenience to the operating doctor, but also affects the drug treatment effect and the angiography effect due to the reflux of the drugs and contrast agent. Based on the above, it is particularly necessary to provide a medical catheter device that can be easily spliced in length and can conveniently block the organ passage after entering the human body to prevent the reflux of liquid medicine and contrast agent. Utility Model Content

[0004] In order to overcome the drawbacks that due to the limitations of the structure of the existing medical catheter, the length cannot be spliced, there are certain limitations in practical applications, and there is no blocking mechanism at its front end, which easily causes the reflux of contrast agent or drugs when perfusing drugs and contrast agent into the human organ passage, bringing inconvenience to the doctor's operation and affecting the drug treatment effect and the angiography effect, the present invention provides a medical catheter device with a main tube and branch tube structure. During application, doctors can easily splice the length as needed, making it more convenient and flexible to use. And an airbag is provided at the front outer side end of the main tube. After entering the human body, it can be easily inflated through an inflation device to expand and temporarily block the internal passage of the human organ, preventing the reflux of drugs or contrast agent during subsequent drug or contrast agent perfusion. This not only brings convenience to the operating doctor, but also can achieve better drug perfusion treatment and angiography display effects.

[0005] The technical solution adopted by the present invention to solve its technical problems is:

[0006] Novel medical catheter device, including a catheter body, characterized by further comprising an annular airbag, an inflation device, and a prompting circuit; the catheter body is divided into a main tube and branch tubes, there are multiple branch tubes, there is an annular groove on the outer part of the front end of the main tube, the airbag is tightly sleeved in the groove, there is a laterally distributed and penetrating forward air inlet tube on the side end of the main tube, and the forward air inlet tube is located at the rear side end of the groove; the airbag has an air inlet, and the air inlet and the front side end of the forward air inlet tube of the main tube are connected through a connecting hose; there is an internal thread inside the rear side of the main tube; there are multiple branch tubes, there is a laterally distributed and penetrating backward air inlet tube on the side end of the branch tube, the outer diameter of the front side end of the branch tube is smaller than that of the rear side end, and the front side end has an external thread, there is an internal thread inside the rear side of the branch tube, the branch tubes and the main tube are connected by threads, and the branch tubes are connected by threads; the inflation device includes a tank body, a valve, an air filling nozzle, and an air hose, the valve is installed on one side of the tank body, the air filling nozzle is installed on the other side of the tank body, both ends of the air hose are respectively inserted into one side of the valve and one end of a connecting tube, and the other end of the connecting tube is inserted into the rear side inside of the forward air inlet tube of the main tube and the rear side inside of the backward air inlet tube of the branch tube; the prompting circuit is installed in an element box.

[0007] Further, between the main tube and the branch tubes, and between the branch tubes, after being connected by threads and when the threads are rotated to the stop point, the forward air inlet tube of the main tube and the backward air inlet tubes of the branch tubes, and between the backward air inlet tubes of the branch tubes are horizontally in a straight line, closely attached and internally interconnected.

[0008] Further, the outer diameter of the airbag is smaller than the outer diameter of the main tube.

[0009] Further, the lengths of the multiple branch tubes are inconsistent.

[0010] Further, there is compressed air in the tank body.

[0011] Further, the prompting circuit includes a storage battery, a power switch, a pressure switch, a charging socket, and an alarm sub - circuit. The pressure switch is installed on the upper part of the tank body, the two poles of the storage battery and the two power input ends of the alarm sub - circuit are respectively electrically connected, and the other end of the pressure switch is connected to the signal input end of the alarm sub - circuit.

[0012] Further, the alarm sub - circuit of the prompting circuit includes resistors, light - emitting diodes, NPN transistors, which are connected by circuit board wiring. One end of the first and second resistors are connected, one end of the third resistor is connected to the base of the first NPN transistor, the collector of the first NPN transistor is connected to the other end of the first resistor and the base of the second NPN transistor, the collector of the second NPN transistor is connected to the negative electrode of the light - emitting diode, the other end of the second resistor is connected to the positive electrode of the light - emitting diode, and the emitters of the two NPN transistors are connected.

[0013] The beneficial effects of the present invention are as follows: In the application of this new type, doctors can conveniently splice a main tube and one or more branch tubes as needed, so that the length of the catheter body can reach the requirement for perfusing drugs or contrast agents, making it more convenient and flexible to use. An airbag is provided at the front outer side end of the main tube. After the catheter body enters the appropriate position in the human body, the operating doctor briefly opens the manual valve. Then, the airbag inflates and blocks the channel of the human organ, preventing the backflow of drugs or contrast agents during subsequent drug or contrast agent perfusion. After the operation is completed, the operating doctor can easily remove the catheter body from the human channel by discharging the compressed air in the airbag. This new type not only brings convenience to the operating doctor, but also can achieve better drug perfusion treatment and imaging display effects. Based on the above, this new type has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the drawings and embodiments.

[0015] Figure 1 It is a schematic diagram of the overall and partial enlarged structure of the present invention.

[0016] Figure 2 、 Figure 3 It is a schematic diagram of the partial split structure of the present invention.

[0017] Figure 4 It is a circuit diagram of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Figure 1 、 2As shown in FIGS. 2 and 3, the new medical catheter device includes a catheter body 4 (for example, the fallopian tube imaging catheter has a diameter of about 4.5 mm), and also has an annular airbag 1, an inflation device 2, and a prompt circuit 3; the catheter body 4 is divided into a main tube 41 and a plurality of branch tubes 42. There are multiple branch tubes 42. There is an annular groove 411 on the outer front end of the main tube 41. The airbag 1 is tightly sleeved in the annular groove 411. There is a laterally distributed and through forward air inlet pipe 412 at the left end of the main tube 41. The front end of the forward air inlet pipe 412 is located at the rear end of the annular groove 411; there is an air inlet 101 at the left rear end of the airbag 1. The air inlet 101 and the front end of the forward air inlet pipe 412 of the main tube are inserted and connected through a connecting hose 415 (the connecting hose 415 is respectively inserted into the forward air inlet pipe 412 and the air inlet 101); there is a section of internal thread 413 inside the rear side of the main tube 41; there are multiple branch tubes 42. There is a laterally distributed and through backward air inlet pipe 421 at the left end of the branch tube 42. The outer diameter of the front end of the branch tube 42 is smaller than that of the rear end, and the front end has an external thread 423. There is a section of internal thread 424 inside the rear side of the branch tube 42. The branch tube 42 is connected to the main tube 41 by screwing the front end external thread 423 into the internal thread 413 at the rear end of the main tube. Between every two branch tubes 42, the rear branch tube 42 is connected to the front branch tube 42 by screwing the front external thread 423 into the internal thread 424 at the rear end of the front branch tube 42; the inflation device 2 includes a stainless steel sealed tank body 21, a micro manual valve 22, a gas filling nozzle 23, and a gas hose 24. There is an air outlet pipe 211 in the middle of the front end of the tank body 21. One end of the manual valve 22 is threadedly connected to the air outlet pipe 211. The other end of the manual valve 22 has an exhaust pipe 212. The two ends of the gas hose 24 are respectively inserted into the exhaust pipe 212 and one end of a "┑" shaped plastic communication pipe 25. The other end of the communication pipe 25 is inserted into the rear side inside the forward air inlet pipe 412 of the main tube or the rearward air inlet pipe 421 of the branch tube; there is an opening on the upper right side end of the tank body 21. The gas filling nozzle 23 is installed outside the opening through its own thread nut, and the exhaust port of the gas filling nozzle 23 is located inside the upper right part of the tank body 21; the prompt circuit 3 is installed on the circuit board in the component box 5, and the component box 5 is installed in the middle of the front outer end of the tank body 21.

[0019] Figure 1 、 2 As shown in FIGS. 2 and 3, after the main tube 41 and the branch tubes 42, and between the branch tubes 42 are threadedly connected and the thread rotates to the stop point, between the forward air inlet pipe 412 of the main tube 42 and the backward air inlet pipes of the branch tubes, the backward air inlet pipes of the branch tubes are horizontally in a straight line and in close contact and internally communicated. The outer diameter of the airbag 1 is smaller than the outer diameter of the main tube 41. The lengths of multiple branch tubes 42 are inconsistent. The communication pipe 25 is in close contact and sealed with the inside of the forward air inlet pipe 412 of the main tube and the backward air inlet pipes of the branch tubes. Compressed air is added into the tank body 21.

[0020] Figure 1 and 2 As shown in Figure 3, the prompting circuit 3 includes a storage battery 31, a power switch 32, a pressure switch 33, a charging socket 34 and an alarm sub-circuit 35. There is an internal threaded opening in the middle of the upper end of the tank body 21. The pressure switch 33 is installed outside the upper end of the tank body 21 by screwing the external thread of its intake pipe into the internal thread of the opening, and the intake pipe is communicated with the inside of the tank body 21.

[0021] Figure 4 As shown, the alarm sub-circuit of the prompting circuit includes resistors R1, R2, R3, a light-emitting diode VL, NPN transistors Q1, Q2, which are connected by circuit board wiring. One end of the first resistor R2 is connected to one end of the second resistor R3. One end of the third resistor R1 is connected to the base of the first NPN transistor Q1. The collector of the first NPN transistor Q1 is connected to the other end of the first resistor R2 and the base of the second NPN transistor Q2. The collector of the second NPN transistor Q2 is connected to the negative electrode of the light-emitting diode VL. The other end of the second resistor R3 is connected to the positive electrode of the light-emitting diode VL. The emitters of the two NPN transistors Q1 and Q2 are connected. The two poles of the storage battery G (6V / 2Ah lithium storage battery) and the two terminals of the charging socket CZ are respectively connected by wires (when the storage battery G is out of power, an external 6V power charger plug can be inserted into the charging socket CZ to charge the storage battery G). One end of the power switch S is connected to the positive electrode of the storage battery G, and the other end of the power switch S is connected to one end of the pressure switch K. The other end of the power switch S, the negative electrode of the storage battery G and the two power input terminals of the alarm sub-circuit, one end of the resistor R2 and the emitter of the NPN transistor Q1 are respectively connected by wires. The other end of the pressure switch K is connected to the other end of the resistor R1, which is the signal input terminal of the alarm sub-circuit.

[0022] Figure 1 and 2, as shown in FIGS. 3, in the application of this new type, doctors can conveniently splice a main tube 41 and one or more branch tubes 42 as needed, so that the length of the catheter body 4 can reach the requirement for perfusing drugs or contrast agents, making it more convenient and flexible to use (the disinfection process of the used components is exactly the same as that of the existing catheters). During splicing, the branch tube 42 is screwed into the internal thread 413 at the rear end of the main tube through the external thread 423 at the front end to realize the connection between the branch tube 42 and the main tube 41. Between every two branch tubes 42, the rear branch tube 42 is screwed into the internal thread 424 at the rear end of the front branch tube 42 through the external thread 423 at the front part to realize the connection between the two branch tubes 42; after the main tube 41 and the branch tube 42, and between the branch tubes 42 are connected by threads and the threads are rotated to the stop point, the forward air inlet tube 412 of the main tube 42 and the rear air inlet tube 421 of the branch tube, and between the rear air inlet tubes 421 of the branch tubes are horizontally in a straight line and closely fit and are in an internally interconnected state. Before perfusing drugs or contrast agents, the operating doctor inserts the connecting tube 25 into the rear end of the forward air inlet tube 411 of the main tube 41 or the rear end of the rear air inlet tube 421 of the branch tube 42. This new type is provided with an airbag 1 (made of rubber) at the front outer side end of the main tube. When the catheter body 4 enters the appropriate position in the human body, the operating doctor briefly opens the manual valve 22. Then, the compressed air in the tank 21 enters the airbag 1 through the connecting tube 25 and the air hose 24. The airbag 1 inflates and blocks the human organ channel (even if the valve 22 is not closed, the air pressure in the tank 21 is not high, and the air in the tank 21 and the airbag 1 are always connected. After the airbag 1 expands to a certain volume, it will no longer expand, preventing the airbag 1 from bursting due to excessive air pressure), preventing the backflow of drugs or contrast agents during subsequent drug or contrast agent perfusion (then the drug solution or contrast agent can be perfused through the catheter body). When the doctor finishes the operation, the operating doctor pulls out the connecting tube 25. Then, the air in the forward air inlet tube 412 of the main tube and the rear air inlet tube 421 of the branch tube is discharged, and the airbag 1 automatically contracts into the groove 411 at the front end of the main tube 41. In this way, the operating doctor can conveniently remove the catheter body 4 from the human body channel. This new type not only brings convenience to the operating doctor, but also can achieve better drug perfusion treatment and contrast display effects.

[0023] Figure 1 , 2As shown in Figures 3 and 4, in the alarm sub - circuit of the prompting circuit, when there is compressed air in the tank body 21 and the air pressure is higher than a certain value (for example, the pressure is above 0.015 Mpa), then the two contacts inside the air pressure switch K close (on the premise that the power switch S is turned on). In this way, the positive pole of the 6V power supply output by the storage battery G will pass through the air pressure switch K and the resistor R1 for voltage reduction and current limiting and enter the base of the NPN triode Q1. The NPN triode Q1 conducts and its collector outputs a low level and enters the base of the NPN triode Q2. The base of the NPN triode Q2 has no appropriate forward bias voltage and is in a cut - off state. Then the light - emitting diode VL will not be powered on and emit light, indicating to the operating doctor that there is enough air in the tank body 21 and no inflation is needed. When the compressed air pressure in the tank body 21 is lower than a certain value (for example, the pressure is below 0.015 Mpa), then the two contacts inside the air pressure switch K open, and the positive pole of the 6V power supply no longer enters the base of the NPN triode Q1 through the air pressure switch K; the NPN triode Q1 is cut off and its collector no longer outputs any low level to enter the base of the NPN triode Q2. The base of the NPN triode Q2 obtains an appropriate forward bias voltage through the resistor R2 for voltage reduction and current limiting and conducts. Its collector outputs a low level and enters the negative - pole power input terminal of the light - emitting diode VL. Then, the light - emitting diode VL is powered on and emits light (the resistor R3 is used for voltage reduction and current limiting), giving a clear prompt to the operating doctor, indicating that the air in the tank body 21 is insufficient and inflation is needed. It should be noted that generally, after using the catheter body 4 ten times, it is necessary to refill compressed air (about 0.05 Mpa) into the tank body 21 through an air filling cylinder with a pressure gauge. Figure 2 , the resistance values of the resistors R1, R2, and R3 are 200K, 20K, and 600Ω respectively; the models of the NPN triodes Q1 and Q2 are 9013; the light - emitting diode VL is a red light - emitting diode (the front end is located outside the first opening at the front end of the component box, the handle of the power switch S is located outside the second opening at the front end of the component box, and the jack of the charging socket CZ is located outside the third opening at the front end of the component box); the air pressure switch K is a finished product of the type QPM11 - NO normally - open contact adjustable air pressure switch, and its right outer side of the shell has an adjusting knob, which can adjust the closing of the two normally - open contact ends at different air pressures.

[0024] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is limited to the details of the above - mentioned exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non - restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention.

[0025] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A novel medical catheter device, comprising a catheter body, characterized in that It also has an annular airbag, an inflation device, and a prompting circuit; the catheter body is divided into a main tube and a plurality of branch tubes. There are multiple branch tubes. There is an annular groove on the outer part of the front end of the main tube, and the airbag is tightly sleeved in the groove. There is a laterally distributed and penetrating forward air inlet pipe on the side end of the main tube, and the forward air inlet pipe is located at the rear side end of the groove; the airbag has an air inlet, and the air inlet and the front side end of the forward air inlet pipe of the main tube are connected through a connecting hose; there is an internal thread inside the rear side of the main tube; there are multiple branch tubes, and there is a laterally distributed and penetrating backward air inlet pipe on the side end of the branch tube. The outer diameter of the front side end of the branch tube is smaller than that of the rear side end, and the front side end has an external thread. There is an internal thread inside the rear side of the branch tube. The branch tube and the main tube are connected by threads, and the branch tubes are connected by threads; the inflation device includes a tank body, a valve, an air filling nozzle, and an air hose. The valve is installed on one side of the tank body, the air filling nozzle is installed on the other side of the tank body, and both ends of the air hose are respectively inserted into one side of the valve and one end of a connecting pipe. The other end of the connecting pipe is inserted into the rear side inside of the forward air inlet pipe of the main tube and the rear side inside of the backward air inlet pipe of the branch tube; the prompting circuit is installed in the component box.

2. The novel medical catheter device according to claim 1, wherein, After the main tube and the branch tubes, and between the branch tubes are connected by threads and the threads are rotated to the stop point, between the forward air inlet pipe of the main tube and the backward air inlet pipe of the branch tube, and between the backward air inlet pipes of the branch tubes are horizontally in a straight line and in a tightly attached and internally interconnected state.

3. The novel medical catheter device according to claim 1, characterized in that, The outer diameter of the airbag is smaller than that of the main tube.

4. The novel medical catheter device according to claim 1, characterized in that, The lengths of multiple branch tubes are inconsistent.

5. The novel medical catheter device according to claim 1, wherein, There is compressed air in the tank body.

6. The novel medical catheter device according to claim 1, characterized in that, The prompting circuit includes a storage battery, a power switch, a pressure switch, a charging socket, and an alarm sub-circuit. The pressure switch is installed on the upper part of the tank body. The two poles of the storage battery and the two power input ends of the alarm sub-circuit are respectively electrically connected, and the other end of the pressure switch is electrically connected to the signal input end of the alarm sub-circuit.

7. The novel medical catheter device according to claim 6, wherein, The alarm sub-circuit of the prompting circuit includes resistors, light-emitting diodes, and NPN triodes, which are connected by circuit board wiring. One end of the first and second resistors is connected. One end of the third resistor and the base of the first NPN triode are connected. The collector of the first NPN triode and the other end of the first resistor, and the base of the second NPN triode are connected. The collector of the second NPN triode and the negative electrode of the light-emitting diode are connected. The other end of the second resistor and the positive electrode of the light-emitting diode are connected. The emitters of the two NPN triodes are connected.

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