Balloon catheter system capable of automatically regulating and supplementing pressure and working method thereof

Abstract

The invention relates to a balloon catheter system capable of automatically regulating and supplementing pressure, which comprises a tracheal balloon catheter, an air storage balloon and a two-way valve, the air storage balloon is communicated with the tracheal balloon catheter through an air inlet pipe, and the two-way valve is arranged on an air inlet pipeline; and the pressure regulating and supplementing valve is arranged on the air inlet pipeline, and the pressure regulating and supplementing valve is automatically opened to inflate the tracheal balloon catheter, so that the pressure of the tracheal balloon catheter is maintained at a set value. According to the use method of the balloon catheter system, the working pressure of the pressure regulating and supplementing valve is set to be preset pressure by rotating the regulating knob; when the pressure in the balloon body rises to a set value, the diaphragm drives the valve element to move upwards, so that the sealing gasket seals the air outlet cavity, and the situation that too high pressure is input into the balloon body is avoided; when the pressure in the balloon body is lower than a set value, the diaphragm drives the valve element to move downwards, the air outlet cavity is communicated with the air inlet cavity, and the air storage balloon inflates the balloon body till the pressure of the balloon body rises to the set value.

Description

Technical Field

[0001] The present invention relates to the field of medical equipment, and in particular to a balloon catheter system capable of automatically regulating and replenishing pressure and a working method thereof. Background Art

[0002] Patients under general anesthesia or in the ICU need to have a tracheal balloon catheter placed in the trachea through the mouth or nose, and have their breathing assisted by an anesthesia machine or ventilator. During ventilation, there is a balloon body at the distal end of the tracheal balloon catheter. In order to ensure the ventilation seal, an appropriate amount of gas is filled into the balloon body, and the filling pressure will be higher than the pressure during mechanical ventilation.

[0003] Under the pressure of the balloon on the airway mucosa, the blood circulation of the airway mucosa is blocked, the blood supply is reduced, or even no blood supply. When the balloon compresses the airway mucosa for a short time, the balloon is emptied, the pressure is eliminated, the blood circulation resumes, and the compressed part of the airway mucosa is still fine; if the pressure is slightly longer, it will cause slight ischemic necrosis at the compressed part of the airway mucosa, which can easily lead to airway infection, cough, or develop into lung infection in patients.

[0004] In order to reduce the above negative effects, the commonly used clinical solutions are:

[0005] 1. When filling the tracheal balloon catheter with gas, operate accurately and use a pressure gauge to inflate. The general inflation pressure is 30 mmHg, but in patients with poor lung compliance, the inflation pressure needs to be appropriately increased. This method avoids excessive inflation pressure of the balloon, minimizes the compression of the airway mucosa by the sealed balloon, and prolongs the time that the compressed part of the airway mucosa can tolerate compression, but in patients with longer mechanical ventilation, ischemic necrosis still occurs.

[0006] Second, for patients who are intubated and mechanically ventilated, the balloon is periodically evacuated to temporarily restore blood circulation in the airway mucosa. This method requires more manual intervention by nursing staff, and when the balloon is evacuated, the mechanical ventilation will leak severely, affecting the ventilation effect, affecting the patient's oxygenation, and causing hypoxia in the patient.

[0007] Clinically, there is an urgent need for a device that is simple to operate and can maintain blood supply to the compression site of the balloon body while ensuring the sealing of the mechanical ventilation of the tracheal balloon catheter. Similar situations also exist when balloon catheters are placed in other human cavities, which will not be described in detail here. Summary of the invention

[0008] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology, provide a balloon catheter system and a working method that can automatically adjust and compensate pressure, and solve the technical problem that the previous balloon catheter system cannot automatically adjust and compensate pressure, thereby compressing the blood supply to the inner wall of the airway.

[0009] The technical solution adopted by the present invention to solve its technical problem is:

[0010] First aspect:

[0011] Provided is a balloon catheter system capable of automatically regulating and replenishing pressure, comprising:

[0012] A tracheal balloon catheter, a balloon storage balloon and a two-way valve, wherein the balloon storage balloon and the tracheal balloon catheter are connected through an air inlet pipe, and the two-way valve is arranged on the air inlet pipe;

[0013] The pressure regulating and compensating valve is arranged on the air inlet pipe. The pressure regulating and compensating valve automatically opens to inflate the tracheal balloon catheter, thereby maintaining the pressure of the tracheal balloon catheter at a set value.

[0014] Furthermore, the pressure regulating and compensating valve comprises

[0015] A valve body, wherein an air inlet cavity, an air outlet cavity, a diaphragm cavity, a rod cavity and a bottom cavity are provided in the valve body, wherein the rod cavity is connected to the diaphragm cavity, the air outlet cavity and the bottom cavity, and the bottom cavity is connected to the air inlet cavity and the air outlet cavity;

[0016] A valve bottom cover, which is arranged at the lower end of the valve body and is sealed with the bottom cavity, and a sealing gasket is arranged in the bottom cavity;

[0017] A valve top cover, the valve top cover is arranged at the upper end of the valve body and is sealed and connected with the diaphragm cavity. A diaphragm is arranged in the diaphragm cavity. The diaphragm is sealed and clamped between the valve top cover and the valve body. An adjusting knob is arranged at the upper end of the valve top cover;

[0018] The valve core includes a valve stem and a core plate, the core plate is located in the bottom cavity, the lower end of the valve stem extends into the bottom cavity and is fixedly connected to the core plate, the upper end of the valve stem passes through the air outlet cavity and enters the diaphragm cavity, the upper end of the valve stem passes through the diaphragm, a seal is made between the valve stem and the diaphragm, a spring is arranged between the upper end of the valve stem and the adjusting knob, the sealing gasket is located above the core plate, and the valve stem passes through the sealing gasket, when the pressure in the tracheal balloon catheter is at the set value, the valve core moves up and drives the sealing gasket to seal the outlet of the air inlet cavity.

[0019] Furthermore, a circle of grooves is provided on the valve stem, the diaphragm is located in the grooves, and a sealing fit is formed between the diaphragm and the inner wall of the grooves.

[0020] Furthermore, a positioning groove is provided at the lower end of the adjusting knob, and the upper end of the spring extends into the positioning groove.

[0021] Furthermore, a positioning cone is formed at the upper end of the valve stem, and the positioning cone cooperates with the lower end of the spring.

[0022] Furthermore, a spacer is arranged in the positioning groove, and the spacer is arranged between the upper end of the spring and the positioning groove.

[0023] Furthermore, an indicating pressure airbag is provided on the air intake pipe.

[0024] Second aspect:

[0025] A method for using the balloon catheter system is provided, wherein:

[0026] The working pressure of the pressure regulating and boosting valve is set to a predetermined pressure by turning the adjusting knob;

[0027] Place the balloon of the tracheal balloon catheter in the human airway, open the two-way valve, and the balloon storage balloon drives the balloon to swell. When the pressure in the balloon rises to the set value, the diaphragm drives the valve core to move upward, so that the sealing gasket closes the outlet of the air inlet cavity to avoid inputting too high pressure into the balloon.

[0028] When the pressure in the balloon is lower than the set value, the diaphragm drives the valve core to move downward, the air outlet cavity is connected with the air inlet cavity, and the gas storage balloon is inflated into the balloon until the pressure in the balloon rises to the set value.

[0029] The beneficial effects of the present invention are:

[0030] The balloon catheter system of the present invention adopts a newly designed pressure regulating and compensating valve, which can automatically close the tracheal balloon catheter when the set pressure value is reached. When the pressure inside the tracheal balloon catheter is lower than the pressure value, the pressure regulating and compensating valve automatically opens, and the tracheal balloon catheter is automatically inflated to the set value by relying on the storage balloon. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention is further described below in conjunction with the accompanying drawings.

[0032] Figure 1 The balloon catheter system of the present invention

[0033] Figure 2 and Figure 3 It is a schematic diagram of a pressure regulating and boosting valve;

[0034] Figure 4 It is a schematic diagram of the valve body;

[0035] Figure 5 It is a schematic diagram of the valve core;

[0036] Among them, 1. endotracheal balloon catheter, 11. balloon body;

[0037] 21. Ball storage bag, 22. Two-way valve, 23. Indicating pressure bag;

[0038] 3. valve body, 31. air inlet cavity, 32. air outlet cavity, 33. diaphragm cavity, 34. rod cavity, 35. bottom cavity;

[0039] 4. valve core, 41. valve stem, 42. core plate, 43. slot, 44. positioning cone;

[0040] 51. Valve bottom cover, 52. Valve top cover, 53. Adjustment knob, 54. Spacer, 55. Spring;

[0041] 61. Sealing gasket, 62. Diaphragm. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] The present application provides a balloon catheter system that can automatically adjust and compensate pressure, which is described in detail below. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments of the present application. In the following embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0044] In order to solve the technical problem that the balloon catheter system in the prior art cannot automatically adjust and compensate the pressure, thereby compressing the blood supply of the airway inner wall, an embodiment of the present application provides a balloon catheter system that can automatically adjust and compensate the pressure.

[0045] like Figure 1 As shown, a balloon catheter system capable of automatically adjusting and compensating pressure includes:

[0046] A tracheal balloon catheter 1, a balloon storage balloon 21 and a two-way valve 22, wherein the balloon storage balloon 21 is connected to the tracheal balloon catheter 1 through an air inlet pipe, and the two-way valve 22 is arranged on the air inlet pipe;

[0047] The pressure regulating and compensating valve is arranged on the air inlet pipe. The pressure regulating and compensating valve automatically opens to inflate the tracheal balloon catheter 1, so that the pressure of the tracheal balloon catheter 1 is maintained at a set value.

[0048] Specifically, as an optional implementation in this embodiment, Figures 2 to 5 As shown, the pressure regulating and compensating valve includes

[0049] A valve body 3, wherein an air inlet cavity 31, an air outlet cavity 32, a diaphragm cavity 33, a rod cavity 34 and a bottom cavity 35 are formed in the valve body 3, wherein the rod cavity 34 is connected to the diaphragm cavity 33, the air outlet cavity 32 and the bottom cavity 35, and the bottom cavity 35 is connected to the air inlet cavity 31 and the air outlet cavity 32;

[0050] A valve bottom cover 51, which is arranged at the lower end of the valve body 3 and is sealed with the bottom cavity 35, and a sealing gasket 61 is arranged in the bottom cavity 35;

[0051] A valve top cover 52, which is arranged at the upper end of the valve body 3 and is sealed with the diaphragm cavity 33. A diaphragm 62 is arranged in the diaphragm cavity 33. The diaphragm 62 is sealed and clamped between the valve top cover 52 and the valve body 3. An adjusting knob 53 is arranged at the upper end of the valve top cover 52;

[0052] The valve core 4 includes a valve stem 41 and a core plate 42, the core plate 42 is located in the bottom cavity 35, the lower end of the valve stem 41 extends into the bottom cavity 35 and is fixedly connected to the core plate 42, the upper end of the valve stem 41 passes through the air outlet cavity 32 and enters the diaphragm cavity 33, the upper end of the valve stem 41 passes through the diaphragm 62, the valve stem 41 and the diaphragm 62 are sealed, a spring 55 is arranged between the upper end of the valve stem 41 and the adjusting knob 53, the sealing gasket 61 is located above the core plate 42, and the valve stem 41 passes through the sealing gasket 61, when the pressure in the tracheal balloon catheter 1 is at the set value, the valve core 4 moves up and drives the sealing gasket 61 to seal the outlet of the air inlet cavity 31.

[0053] In this embodiment, Figure 1 As shown, the air inlet pipe is provided with an indicating pressure airbag 23. The function of the indicating pressure airbag is that the tracheal balloon catheter has gas pressure, which can be seen or touched in vitro, because the section of the tracheal balloon catheter inserted into the body is invisible, and now the pressure of the balloon body can be seen or touched in vitro.

[0054] In this embodiment, Figure 3 As shown, a convex ring is formed at the outlet of the air inlet cavity 31 , which protrudes toward the bottom cavity 35 . The outlet of the air inlet cavity 31 cooperates with the sealing gasket 61 through the convex ring, so as to improve the sealing performance of the sealing gasket 61 on the outlet of the air inlet cavity 31 .

[0055] In this embodiment, the diaphragm 62 is made of silicone material, which belongs to the scope of the prior art.

[0056] After the diaphragm 62 is connected to the valve stem 41 , the valve stem 41 can move up and down along with the diaphragm 62 .

[0057] The diaphragm 62 moves up and down as the air pressure in the valve body 3 changes. When the air pressure is at a set value, the diaphragm 62 bulges upward and drives the valve stem 41 to move upward, thereby driving the sealing gasket 61 to close the outlet of the air inlet chamber 31. When the air pressure is lower than the set value, the diaphragm 62 moves downward, thereby driving the valve stem 41 to move downward, and the outlet of the air inlet chamber 31 opens.

[0058] A circular step surface is provided in the diaphragm cavity 33 , and the diaphragm 62 is placed on the circular step surface all around. When the valve top cover 52 is connected to the valve body 3 , the diaphragm 62 is pressed tightly.

[0059] Specifically, as an optional implementation in this embodiment, Figure 5 As shown, a circle of grooves 43 are formed on the valve stem 41 , and the diaphragm 62 is located in the grooves 43 , so that a sealing fit is formed between the diaphragm 62 and the inner wall of the grooves 43 .

[0060] The diaphragm 62 is sleeved in the slot 43 of the valve stem 41 to achieve a quick connection between the diaphragm 62 and the valve stem 41 .

[0061] Specifically, as an optional implementation in this embodiment, Figure 5 As shown, a positioning groove is provided at the lower end of the adjusting knob 53, and the upper end of the spring 55 extends into the positioning groove.

[0062] A cross slot is provided at the upper end of the adjusting knob 53 , and the cross slot is used for cooperating with a cross wrench to facilitate driving the adjusting knob 53 to rotate. When the positioning slot cooperates with the spring 55 , the stability between the spring 55 and the adjusting knob 53 is improved.

[0063] In this embodiment, a spacer 54 is provided in the positioning groove, and the spacer 54 is provided between the upper end of the spring 55 and the positioning groove. The spacer 54 is designed mainly to prevent the end of the spring 55 from being engaged with the adjusting knob 53, thereby affecting the rotation of the adjusting knob 53. The spacer 54 prevents the spring 55 from directly contacting the adjusting knob 53.

[0064] Specifically, as an optional implementation in this embodiment, Figure 5 As shown, a positioning cone 44 is formed at the upper end of the valve stem 41 , and the positioning cone 44 cooperates with the lower end of the spring 55 .

[0065] The positioning cone 44 is designed to improve the stability of the assembly between the elastic body and the valve stem 41 .

[0066] Working principle of the pressure regulating and compensating valve: The compression of the spring 55 is controlled by adjusting the knob 53, and the setting value of the pressure regulating and compensating valve is determined by the compression amount of the spring 55. The greater the deformation of the spring 55 caused by the adjusting knob 53, the higher the setting value of the entire pressure regulating and compensating valve. The smaller the deformation of the spring 55, the smaller the setting value of the pressure regulating and compensating valve.

[0067] The valve stem 41 moves up and down, and is subjected to the force of the spring 55 and the force of the diaphragm 62. The air pressure in the valve causes the diaphragm 62 to bulge upward. The deformation force of the diaphragm 62 is greater than the elastic force, which naturally drives the valve stem 41 to move upward, driving the core plate 42 and the sealing gasket 61 to seal the outlet of the air inlet chamber 31.

[0068] A method for using the balloon catheter system is provided, wherein the working pressure of the pressure regulating and compensating valve is set to a predetermined pressure of 30 mmHg by rotating the adjusting knob 53;

[0069] The gas storage balloon 21 carries gas at a pressure of 760 mmHg (≈1 atm) to meet the gas replenishment function.

[0070] The balloon body 11 of the tracheal balloon catheter 1 is placed in the human airway, and the two-way valve 22 is opened. The balloon 21 drives the balloon body 11 to swell. When the pressure in the balloon body 11 rises to 30 mmHg, the diaphragm 62 drives the valve core 4 to move upward, so that the sealing gasket 61 closes the outlet of the air inlet cavity 31 to prevent further delivery of gas into the balloon body 11. At this time, the pressure in the balloon body 11 and the air outlet cavity 32 is 30 mmHg.

[0071] When the pressure in the balloon body 11 is lower than 30 mmHg, the diaphragm 62 drives the valve core 4 to move downward, the air outlet cavity 32 is connected with the air inlet cavity 31, and the gas storage balloon 21 inflates the balloon body 11 until the pressure in the balloon body 11 rises to 30 mmHg.

[0072] After the balloon body 11 blocks the airway, oxygen is supplied through another channel in the tracheal balloon catheter 1 .

[0073] The various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0074] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0075] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0076] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0077] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0078] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0079] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A balloon catheter system capable of automatically regulating and compensating pressure, characterized in that: include A tracheal balloon catheter (1), a balloon storage balloon (21), and a two-way valve (22), wherein the balloon storage balloon (21) and the tracheal balloon catheter (1) are connected via an air inlet pipe, and the two-way valve (22) is arranged on the air inlet pipe; A pressure regulating and compensating valve is arranged on the air inlet pipe, and the pressure regulating and compensating valve automatically opens to inflate the tracheal balloon catheter (1), thereby maintaining the pressure of the tracheal balloon catheter (1) at a set value.

2. The balloon catheter system capable of automatically regulating and compensating pressure according to claim 1, characterized in that: The pressure regulating and compensating valve comprises A valve body (3), wherein an air inlet cavity (31), an air outlet cavity (32), a diaphragm cavity (33), a rod cavity (34) and a bottom cavity (35) are provided in the valve body (3); the rod cavity (34) is connected to the diaphragm cavity (33), the air outlet cavity (32) and the bottom cavity (35); and the bottom cavity (35) is connected to the air inlet cavity (31) and the air outlet cavity (32); A valve bottom cover (51), the valve bottom cover (51) is arranged at the lower end of the valve body (3) and is sealed with the bottom cavity (35), and a sealing gasket (61) is arranged in the bottom cavity (35); A valve top cover (52), the valve top cover (52) is arranged at the upper end of the valve body (3) and is sealed with the diaphragm cavity (33), a diaphragm (62) is arranged in the diaphragm cavity (33), the diaphragm (62) is sealed and clamped between the valve top cover (52) and the valve body (3) on all sides, and an adjusting knob (53) is arranged at the upper end of the valve top cover (52); A valve core (4), the valve core (4) comprising a valve stem (41) and a core plate (42), the core plate (42) being located in a bottom cavity (35), the lower end of the valve stem (41) extending into the bottom cavity (35) and being fixedly connected to the core plate (42), the upper end of the valve stem (41) passing through the air outlet cavity (32) and entering the diaphragm cavity (33), the upper end of the valve stem (41) passing through the diaphragm (62), the valve stem (41) and the diaphragm (62) being sealed, a spring (55) being arranged between the upper end of the valve stem (41) and the adjusting knob (53), the sealing pad (61) being located above the core plate (42), and the valve stem (41) passing through the sealing pad (61), when the pressure in the tracheal balloon catheter (1) is at a set value, the valve core (4) moves upward and drives the sealing pad (61) to seal the outlet of the air inlet cavity (31).

3. The balloon catheter system capable of automatically regulating and compensating pressure according to claim 1, characterized in that: The valve stem (41) is provided with a circle of grooves (43), the diaphragm (62) is located in the grooves (43), and a sealing fit is formed between the diaphragm (62) and the inner wall of the grooves (43).

4. The balloon catheter system capable of automatically regulating and compensating pressure according to claim 1, characterized in that: A positioning groove is formed at the lower end of the adjusting knob (53), and the upper end of the spring (55) extends into the positioning groove.

5. The balloon catheter system capable of automatically regulating and compensating pressure according to claim 4, characterized in that: The upper end of the valve stem (41) forms a positioning cone (44), and the positioning cone (44) cooperates with the lower end of the spring (55).

6. The balloon catheter system capable of automatically regulating and compensating pressure according to claim 4, characterized in that: A spacer (54) is arranged in the positioning groove, and the spacer (54) is arranged between the upper end of the spring (55) and the positioning groove.

7. The balloon catheter system capable of automatically regulating and compensating pressure according to claim 2, characterized in that: The air inlet pipe is provided with an indicating pressure air bag (23).

8. A method for using the balloon catheter system according to claim 1, characterized in that: The working pressure of the pressure regulating and compensating valve is set at a predetermined pressure by rotating the adjusting knob (53); The balloon body (11) of the tracheal balloon catheter (1) is placed in the human airway, and the two-way valve (22) is opened. The balloon storage balloon (21) drives the balloon body (11) to swell. When the pressure in the balloon body (11) rises to a set value, the diaphragm (62) drives the valve core (4) to move upward, so that the sealing pad (61) closes the outlet of the air inlet cavity (31), thereby preventing excessive pressure from being input into the balloon body (11); When the pressure in the balloon body (11) is lower than a set value, the diaphragm (62) drives the valve core (4) to move downward, the air outlet cavity (32) is connected to the air inlet cavity (31), and the gas storage balloon (21) inflates the balloon body (11) until the pressure in the balloon body (11) rises to the set value.

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