Pressure-limiting balloon dilatation catheter

Abstract

The utility model discloses a pressure-limiting balloon dilatation catheter which comprises a balloon dilatation catheter assembly, an inflation assembly used for automatic inflation and deflation is arranged on the balloon dilatation catheter assembly, and a protection assembly used for preventing mistaken touch is arranged on the inflation assembly. The protection assembly comprises two anti-contact pieces arranged on the inflation assembly, the two anti-contact pieces are symmetrically arranged, and a shielding piece is arranged at the bottom of the inflation assembly; through the inflation assembly, accurate inflation / deflation of the balloon can be achieved, the balloon pressure and the pressurization time are monitored, controlled and adjusted, and the pressure limiting effect is achieved; by additionally arranging the protection assembly on the inflation assembly, the double inflation / deflation buttons on the inflation assembly can be shielded and protected, the situation that the expansion diameter of the balloon is changed due to the fact that the double inflation / deflation buttons are touched accidentally in the using process is effectively prevented, and then the using effect of the inflation assembly is guaranteed; therefore, the stability and the reliability of the pressure-limiting balloon dilatation catheter during use can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a pressure-limiting balloon dilation catheter. Background Art

[0002] A balloon dilation catheter is a medical intervention device that is widely used in percutaneous transluminal coronary angioplasty, that is, the commonly known coronary stent implantation surgery, and it is mainly used for the treatment of upper gastrointestinal stenosis dilation.

[0003] During the use of the balloon dilation catheter, a balloon inflation device is required to expand and retract the balloon, so as to expand the balloon or release the stent, and monitor, control and adjust the balloon pressure and inflation time to achieve the effect of pressure limitation.

[0004] The patent document with the publication number CN218944130U discloses an automatic balloon inflation device for a balloon dilation catheter, which controls the electric push rod to inflate / deflate through a control system, and the display screen synchronously displays the pressure inside the balloon and the stamping time, realizing precise inflation / deflation of the balloon and solving the problem of inaccurate air pressure control caused by manually pushing the injection rod; by setting double inflation / deflation buttons on both sides of the outer shell, the electric push rod will only be started when both buttons are pressed simultaneously, avoiding the risk of accidental touch during the operation.

[0005] Although the above-mentioned automatic balloon inflation device for a balloon dilation catheter can solve the corresponding technical problems, the double inflation / deflation buttons provided on both sides of its outer shell are exposed, and during use, it is still possible to accidentally touch the double inflation / deflation buttons on the outer shell, thereby affecting the use effect of the automatic balloon inflation device. Therefore, we propose a pressure-limiting balloon dilation catheter. Content of the Utility Model

[0006] The purpose of the utility model is to provide a pressure-limiting balloon dilation catheter to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the main technical solutions adopted by the utility model include:

[0008] A pressure-limiting balloon dilation catheter, comprising:

[0009] A balloon dilation catheter assembly, which is provided with an inflation assembly for automatic inflation and deflation, and the inflation assembly is provided with a protection assembly for preventing accidental touch;

[0010] Wherein, the protection assembly includes anti-touch members arranged on the inflation assembly, there are two anti-touch members arranged symmetrically, and a shielding member is arranged at the bottom of the inflation assembly;

[0011] Among them, the anti-touch component includes a convex column provided on the surface of the inflation component. A baffle that can block the inflation / deflation button of the inflation component is movably connected to the surface of the convex column. A through hole for the convex column to pass through is provided on the baffle, and the inner wall surface of the through hole is slidably connected to the convex column. A stopper for restricting its rotation is provided on one side of the baffle.

[0012] As a preferred technical solution, the balloon dilation catheter assembly includes a connector, a double-lumen catheter, and a balloon. The balloon is provided at the top of the double-lumen catheter, and the connector is provided at the bottom of the double-lumen catheter.

[0013] As a preferred technical solution, the connector includes a first connecting pipe and a second connecting pipe. The first connecting pipe is communicated with one of the cavities of the double-lumen catheter, and the second connecting pipe and the balloon are both communicated with the other cavity of the double-lumen catheter.

[0014] As a preferred technical solution, a guide wire delivery path is formed between the first connecting pipe and one of the cavities of the double-lumen catheter, and a gas delivery path is formed among the second connecting pipe, the other cavity of the double-lumen catheter, and the balloon.

[0015] As a preferred technical solution, the inflation component includes an automatic inflator. An inflation pipe is communicated at the gas outlet of the automatic inflator. One end of the inflation pipe away from the automatic inflator is communicated with the second connecting pipe, and a pressure sensor is installed between the inflation pipe and the automatic inflator.

[0016] As a preferred technical solution, one end of the convex column and one side of the stopper are respectively fixedly connected to the surface of the automatic inflator. The convex column is on the same side as the inflation / deflation button on the automatic inflator. The shielding member is provided at the bottom of the automatic inflator and is used to shield and protect the electric push rod of the automatic inflator.

[0017] As a preferred technical solution, a fence is integrally formed on the side of the baffle facing the automatic inflator. The side of the fence away from the baffle is in contact with the surface of the automatic inflator. A side hole for the inflation / deflation button on the automatic inflator to pass through is provided on the surface of the fence.

[0018] As a preferred technical solution, a magnet is fixedly connected to the side of the stopper close to the baffle, and iron bars for cooperating with the magnet are respectively fixedly connected to both sides of the fence.

[0019] As a preferred technical solution, chamfers are provided at the four corners of the baffle and the fence, and the distance from the center of the through hole to the bottom of the baffle is equal to the chamfer radius.

[0020] As a preferred technical solution, the shielding member includes a protective shell fixedly connected to the bottom of the automatic inflator. A through groove adapted to the electric push rod of the automatic inflator is provided on one side of the protective shell.

[0021] The utility model at least has the following beneficial effects:

[0022] The beneficial effect of the utility model of this application is that through the inflation assembly, precise inflation / deflation of the balloon can be achieved, and the balloon pressure and pressurization time can be monitored, controlled, and adjusted to achieve the effect of pressure limitation; by adding a protection assembly to the inflation assembly, the double inflation / deflation buttons on the inflation assembly can be shielded and protected, effectively preventing the expansion diameter of the balloon from changing due to accidental contact with the double inflation / deflation buttons during use, thereby ensuring the use effect of the inflation assembly, and thus helping to improve the stability and reliability of the pressure-limiting balloon dilation catheter during use. Description of the Drawings

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the pressure-limiting balloon dilation catheter of the utility model;

[0024] Figure 2 It is a three-dimensional structural schematic diagram of the inflation assembly and the protection assembly of the pressure-limiting balloon dilation catheter of the utility model Figure 1 ;

[0025] Figure 3 It is a three-dimensional structural schematic diagram of the inflation assembly and the protection assembly of the pressure-limiting balloon dilation catheter of the utility model Figure 2 ;

[0026] Figure 4 It is a three-dimensional exploded schematic diagram of the convex column and the baffle of the pressure-limiting balloon dilation catheter of the utility model.

[0027] In the figure: 1. Balloon dilation catheter assembly; 11. Connector; 111. First connecting pipe; 112. Second connecting pipe; 12. Double-lumen catheter; 13. Balloon; 2. Inflation assembly; 21. Automatic inflator; 22. Inflation tube; 23. Pressure sensor; 3. Protection assembly; 31. Anti-touch part; 311. Convex column; 312. Baffle; 3121. Through hole; 3122. Enclosure; 3123. Side hole; 3124. Iron bar; 313. Stopper; 3131. Magnet; 32. Shielding part; 321. Protective shell; 322. Through groove. Detailed Embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] Please refer toFigures 1 - 4 , this embodiment provides a pressure-limiting balloon dilation catheter, including: a balloon dilation catheter assembly 1, an inflation assembly 2 for automatic inflation and deflation, and a protection assembly 3 for preventing accidental touch. The inflation assembly 2 is provided on the balloon dilation catheter assembly 1, and the protection assembly 3 is provided on the inflation assembly 2; the protection assembly 3 includes an anti-touch member 31 provided on the inflation assembly 2, and there are two anti-touch members 31 arranged symmetrically. A shielding member 32 is provided at the bottom of the inflation assembly 2; the anti-touch member 31 includes a convex column 311 provided on the surface of the inflation assembly 2, and a baffle 312 that can block the inflation / deflation button of the inflation assembly 2 is movably connected to the surface of the convex column 311. A through hole 3121 for the convex column 311 to pass through is provided on the baffle 312, and the inner wall surface of the through hole 3121 is slidably connected to the convex column 311. A stopper 313 for restricting its rotation is provided on one side of the baffle 312.

[0030] Among them, the balloon dilation catheter assembly 1 includes a connector 11, a double-lumen catheter 12, and a balloon 13. The balloon 13 is provided at the top of the double-lumen catheter 12, and the connector 11 is provided at the bottom of the double-lumen catheter 12.

[0031] Among them, the connector 11 includes a first connecting pipe 111 and a second connecting pipe 112. The first connecting pipe 111 is communicated with one of the cavities of the double-lumen catheter 12, and both the second connecting pipe 112 and the balloon 13 are communicated with the other cavity of the double-lumen catheter 12.

[0032] Among them, a guide wire conveying path is formed between the first connecting pipe 111 and one of the cavities of the double-lumen catheter 12, and a gas conveying path is formed among the second connecting pipe 112, the other cavity of the double-lumen catheter 12, and the balloon 13.

[0033] Among them, the inflation assembly 2 includes an automatic inflator 21. An inflation pipe 22 is communicated at the gas outlet of the automatic inflator 21. One end of the inflation pipe 22 away from the automatic inflator 21 is communicated with the second connecting pipe 112. A pressure sensor 23 is installed between the inflation pipe 22 and the automatic inflator 21.

[0034] It should be noted that the structure and working principle of the above inflation assembly 2 are the same as those of an automatic balloon pressurizing device for a balloon dilation catheter disclosed in the existing publication number CN218944130U, which can realize precise inflation / deflation of the balloon and is prior art. Therefore, it will not be elaborated in this technical solution.

[0035] Among them, one end of the convex column 311 and one side of the stopper 313 are respectively fixedly connected to the surface of the automatic inflator 21. The convex column 311 is on the same side of the inflation / deflation button on the automatic inflator 21. The shielding member 32 is provided at the bottom of the automatic inflator 21 and is used to shield and protect the electric push rod of the automatic inflator 21.

[0036] Among them, a retaining wall 3122 is integrally formed on one side of the baffle 312 facing the automatic inflator 21. The side of the retaining wall 3122 away from the baffle 312 is in contact with the surface of the automatic inflator 21. The thickness of the retaining wall 3122 is greater than the thickness of the inflation / deflation button on the automatic inflator 21. A side hole 3123 for the inflation / deflation button on the automatic inflator 21 to pass through is provided on the surface of the retaining wall 3122. The baffle 312 can be prevented from directly contacting the inflation / deflation button through the retaining wall 3122, and the normal rotation of the baffle 312 can be ensured through the side hole 3123.

[0037] Among them, a magnet 3131 is fixedly connected to one side of the stopper 313 close to the baffle 312. Iron bars 3124 that cooperate with the magnet 3131 are fixedly connected to both sides of the retaining wall 3122 respectively. When the baffle 312 blocks or moves away from the inflation / deflation button of the automatic inflator 21, the corresponding iron bar 3124 is magnetically adsorbed on the magnet 3131, so that the baffle 312 can be positioned to prevent the baffle 312 from moving randomly.

[0038] Among them, chamfers are provided at the four corners of the baffle 312 and the retaining wall 3122, and the distance from the center of the through hole 3121 to the bottom of the baffle 312 is equal to the chamfer radius, so that during the rotation of the baffle 312, the phenomenon that the magnet 3131 blocks the baffle 312 can be avoided, and at the same time, it can be ensured that the baffle 312 can be fixed at a certain position by the cooperation of the iron bar 3124 and the magnet 3131 after rotating a certain angle.

[0039] Among them, the shielding member 32 includes a protective shell 321 fixedly connected to the bottom of the automatic inflator 21. A through groove 322 adapted to the electric push rod of the automatic inflator 21 is provided on one side of the protective shell 321. The shielding member 32 can not only increase the contact area between the hands of medical staff and the inflation assembly 2 for convenient holding, but also play a role in shielding and protecting the electric push rod of the automatic inflator 21, which helps to improve the service life of the electric push rod. It can also play an auxiliary supporting role for the baffle 312 after the baffle 312 rotates downward, avoiding the phenomenon that the baffle 312 is deformed by the hand force when holding the inflation assembly 2.

[0040] The working principle of the present utility model is as follows: When using the inflation assembly 2, forcefully rotate the baffle 312 towards the screen direction of the automatic inflator 21, so that the baffle 312 drives the enclosure 3122, the side holes 3123 and the iron bar 3124 to rotate synchronously with the convex column 311 as the axis, causing the inflation / deflation button on the automatic inflator 21 to gradually expose through the side holes 3123 until the baffle 312 rotates 180 degrees, causing one of the iron bars 3124 to separate from the magnet 3131 and the other iron bar 3124 to be magnetically adsorbed on the magnet 3131, so that the baffle 312 can be stably placed on the surface of the protective shell 321. At this time, the inflation buttons on both sides of the automatic inflator 21 can be pressed simultaneously, and then the gas is sequentially transported through the gas transport passage to the inner cavity of the balloon 13, thus realizing the automatic inflation operation of the balloon 13. The pressure sensor 23 can collect the air pressure in the inflation tube 22 in real time, and then monitor, control and adjust the pressure of the balloon 13 and the pressurization time to achieve the effect of pressure limitation; when deflation is required, press the deflation buttons on both sides of the automatic inflator 21 simultaneously to realize the automatic deflation operation of the balloon 13; when the inflation assembly 2 is not in use, rotate the protective shell 321 180 degrees again towards the screen direction of the automatic inflator 21 to complete the shielding and protection operation of the inflation / deflation button of the automatic inflator 21.

[0041] Parts not involved in the present utility model are the same as the prior art or can be implemented by using the prior art. Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A pressure-limited balloon dilatation catheter, characterized in that: include: A balloon dilatation catheter assembly (1) is provided with an inflation assembly (2) for automatic inflation and deflation, and the inflation assembly (2) is provided with a protection assembly (3) for preventing accidental touch, wherein: The protective component (3) comprises an anti-touch member (31) arranged on the inflatable component (2), two anti-touch members (31) are symmetrically arranged, and a shielding member (32) is arranged at the bottom of the inflatable component (2); The anti-touch member (31) comprises a convex column (311) arranged on the surface of the inflatable component (2); a baffle (312) capable of shielding an inflation / deflation button of the inflatable component (2) is movably connected to the surface of the convex column (311); a through hole (3121) for the convex column (311) to pass through is formed on the baffle (312); an inner wall surface of the through hole (3121) is slidably connected to the convex column (311); and a stopper (313) for limiting the rotation of the baffle (312) is provided on one side of the baffle (312).

2. The pressure-limited balloon dilatation catheter according to claim 1, characterized in that: The balloon dilatation catheter assembly (1) comprises a connector (11), a double-lumen catheter (12) and a balloon (13); the balloon (13) is arranged at the top end of the double-lumen catheter (12), and the connector (11) is arranged at the bottom end of the double-lumen catheter (12).

3. The pressure-limited balloon dilatation catheter according to claim 2, characterized in that: The connector (11) comprises a first connecting pipe (111) and a second connecting pipe (112); the first connecting pipe (111) is connected to one of the lumens of the double-lumen catheter (12); the second connecting pipe (112) and the balloon (13) are both connected to the other lumen of the double-lumen catheter (12).

4. The pressure-limited balloon dilatation catheter according to claim 3, characterized in that: A guidewire delivery passage is formed between the first connecting pipe (111) and one of the lumens of the double-lumen catheter (12), and a gas delivery passage is formed between the second connecting pipe (112), the other lumen of the double-lumen catheter (12) and the balloon (13).

5. The pressure-limited balloon dilatation catheter according to claim 2, characterized in that: The inflation assembly (2) comprises an automatic inflator (21), a gas delivery port of the automatic inflator (21) is connected to an inflation pipe (22), one end of the inflation pipe (22) away from the automatic inflator (21) is connected to a second connecting pipe (112), and a pressure sensor (23) is installed between the inflation pipe (22) and the automatic inflator (21).

6. The pressure-limited balloon dilatation catheter according to claim 5, characterized in that: One end of the boss (311) and one side of the block (313) are respectively fixedly connected to the surface of the automatic inflator (21); the boss (311) is located on the same side of an inflation / deflation button on the automatic inflator (21); and the shielding member (32) is provided at the bottom of the automatic inflator (21) and is used to shield and protect the electric push rod of the automatic inflator (21).

7. The pressure-limited balloon dilatation catheter according to claim 5, characterized in that: A side of the baffle (312) facing the automatic inflator (21) is integrally formed with a baffle (3122), a side of the baffle (3122) away from the baffle (312) contacts the surface of the automatic inflator (21), and a side hole (3123) is provided on the surface of the baffle (3122 for an inflation / deflation button on the automatic inflator (21) to pass through.

8. The pressure-limited balloon dilatation catheter according to claim 7, characterized in that: A magnet (3131) is fixedly connected to one side of the stopper (313) close to the baffle (312), and iron bars (3124) used in conjunction with the magnet (3131) are respectively fixedly connected to both sides of the enclosure (3122).

9. The pressure-limited balloon dilatation catheter according to claim 7, characterized in that: The four corners of the baffle (312) and the enclosure (3122) are all chamfered, and the distance between the center of the through hole (3121) and the bottom of the baffle (312) is equal to the chamfer radius.

10. The pressure-limited balloon dilatation catheter according to claim 5, characterized in that: The shielding member (32) comprises a protective shell (321) fixedly connected to the bottom of the automatic inflator (21), and a through slot (322) adapted to the electric push rod of the automatic inflator (21) is provided on one side of the protective shell (321).

Images