CN220344925U - Balloon, balloon catheter device and system - Google Patents

Abstract

The utility model provides a balloon, a balloon catheter device and a balloon catheter system, wherein the balloon is used for being wrapped on an inner tube, the balloon comprises a balloon membrane which surrounds a pressure cavity, the balloon membrane comprises at least three communicating parts and at least three balloon petals, the communicating parts and the balloon petals are alternately connected along the circumferential direction of the inner tube, the communicating parts are wound on the inner tube, the balloon membrane is folded along the circumferential direction of the inner tube to form balloon petals, and each balloon petal is wound on the communicating parts along the circumferential direction of the inner tube. The balloon provided by the utility model has smaller maximum diameter after being folded, and is beneficial to puncture into a blood vessel; the at least three sacculus petals are arranged in the embodiment, so that the length of a single sacculus petal wound on the communicating part is reduced, the number of turns of the sacculus petals wound on the inner tube is reduced, the probability of overlapping between two adjacent sacculus petals is reduced due to the reduction of the number of turns, the condition that the other sacculus petal is pressurized firstly to affect the pressurization of the other sacculus petal is avoided, the sacculus is pressurized and expanded more smoothly when the device is used, and the risk of operation is further reduced.

Description

Balloon, balloon catheter device and system

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a balloon, a balloon catheter device with the balloon and a balloon catheter system with the balloon catheter device.

Background

Intra-aortic balloon counterpulsation (IABP) is a common treatment for assisting heart work in heart failure patients using balloon catheter devices. The implementation principle of the intra-aortic balloon counterpulsation is as follows: when a patient has serious cardiac insufficiency, arterial pressure is reduced, and the perfusion of important viscera cannot be maintained; simultaneously, the coronary artery perfusion is reduced; at this time, it is difficult to obtain a sufficient vascular active drug. If the saccule is arranged in the aorta, the saccule is rapidly deflated when the heart contracts and the aortic valve is opened, so that a cavity effect is caused, the effect of reducing afterload can be achieved, the heart blood discharge amount is increased, and the blood flow perfusion of important viscera is improved; and the balloon is inflated rapidly at the beginning of diastole and closing of the aortic valve, increasing the arterial diastolic pressure and thus increasing coronary perfusion. The IABP treatment cycle is longer, typically 2-6 weeks, the balloon catheter device needs to be left in the patient for a period of time, the balloon diameter is larger, the puncture difficulty is greater, and the patient needs to endure pain for a long period of time during treatment.

As in the related art shown in fig. 1, the compressed state of the balloon is shown at (a) in fig. 1, and the folded state of the balloon is shown at (b) in fig. 1. The balloon in the related art is basically folded by dividing the balloon into a plurality of balloon petals 111 along a midline by means of vacuum-pumping flattening of the balloon, and then the two balloon petals 111 are rotatably wrapped around the inner tube 230 and are enclosed in a balloon protecting sleeve.

The prior two-flap folded balloon has the following two defects: firstly, as the two balloon petals 111 are folded to form an overlapped part, the maximum diameter of the folded balloon is larger, which is not beneficial to puncture into a blood vessel; secondly, the balloon valve 111 with two folded petals is wider, the number of turns of the balloon valve 111 wound on the inner tube 230 is more, and the situation that the balloon is inflated and expanded inconsequential possibly caused by too many winding turns of the balloon valve 111 during use can influence the smooth operation and increase the operation risk.

Disclosure of Invention

The utility model aims to provide a balloon catheter, which solves the technical problems that the maximum diameter of a folded balloon is large and the number of turns of balloon petals wound on an inner tube is large in the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

in a first aspect, a balloon is provided, the balloon is used for wrapping an inner tube, the balloon comprises a balloon membrane formed with a pressure cavity in a surrounding mode, the balloon membrane comprises at least three communication parts and at least three balloon petals, the communication parts and the balloon petals are alternately connected along the circumferential direction of the inner tube, the communication parts are wound on the inner tube, the balloon membrane is folded along the circumferential direction of the inner tube to form the balloon petals, and each balloon petal is wound on the communication parts along the circumferential direction of the inner tube.

By adopting the technical scheme, on the premise of a certain circumference of the balloon membrane, compared with the balloon with two balloon petals in the related technology, the balloon provided by the embodiment has more balloon petals, and the more the overlapped parts of the communication part and the balloon petals are, the smaller the maximum diameter of the balloon after being folded is, so that the balloon is beneficial to puncture into a blood vessel; the at least three sacculus petals are arranged in the embodiment, so that the length of a single sacculus petal wound on the communicating part is reduced, the number of turns of the sacculus petals wound on the communicating part is reduced, the probability of overlapping between two adjacent sacculus petals is reduced due to the reduction of the number of turns, the condition that the other sacculus petal is pressurized firstly to affect the pressurization of the other sacculus petal is avoided, the sacculus pressurization and expansion are smoother during use, and the risk of an operation is further reduced.

In one embodiment, the end of the balloon valve connected with the communication part is a first end, the balloon valve is provided with a second end deviating from the first end, and the first end of one of the two adjacent balloon valves is abutted with the second end of the other balloon valve.

By adopting the technical scheme, as the first end of one of the adjacent two balloon valves is abutted with the second end of the other balloon valve, an overlapped part is not formed between the first end and the second end of the adjacent two balloon valves, so that the maximum diameter of the folded balloon is smaller, and the folded balloon is favorable for puncturing into a blood vessel.

In one embodiment, the end of the balloon valve connected with the communication part is a first end, the balloon valve is provided with a second end which is away from the first end, and the first end of one balloon valve of two adjacent balloon valves is separated from the second end of the other balloon valve.

By adopting the technical scheme, as the first end of one of the adjacent two balloon petals is spaced from the second end of the other balloon petal, an overlapped part is not formed between the first end and the second end of the adjacent two balloon petals, so that the maximum diameter of the folded balloon is smaller, and the folded balloon is favorable for puncturing into a blood vessel.

In one embodiment, the end of the balloon valve connected with the communication part is a first end, the balloon valve is provided with a second end which is away from the first end, and the first end of one balloon valve of two adjacent balloon valves is overlapped with the second end of the other balloon valve.

By adopting the technical scheme, although the overlapped parts exist between the first ends and the second ends of the two adjacent balloon petals, compared with the balloons with the two balloon petals in the related technology, the balloon provided by the embodiment has more balloon petals, the overlapped parts of the communication part and the balloon petals are more, and the maximum diameter of the balloon after being folded is smaller, so that the balloon is favorable for puncturing and entering a blood vessel.

In one embodiment, a first air accommodating cavity is formed between the communicating part and the inner tube, a second air accommodating cavity is formed in the balloon valve, and the second air accommodating cavity of each balloon valve is communicated with the first air accommodating cavity to form the pressure cavity.

By adopting the technical scheme, the gas filled into the first air accommodating cavity firstly enters the second air accommodating cavity after being saturated, so that each second air accommodating cavity communicated with the first air accommodating cavity can be inflated simultaneously, each balloon valve can be inflated simultaneously, and the condition that the balloon valve is inflated and the balloon valve is in a compressed state basically cannot occur, thereby ensuring the stable inflation of the balloon in the inflation process.

In one embodiment, a crease is provided between two adjacent balloon petals.

By adopting the technical scheme, when the balloon is acted by external force, the stress at the position with the crease is easier to concentrate, so that the balloon is easier to bend, and the balloon is favorable to be changed into a compressed state from an expanded state.

In one embodiment, the material of the balloon is a developing material.

Through adopting above-mentioned technical scheme, the sacculus adopts developing material to make, and it can develop when X light irradiation, and then makes things convenient for the doctor to judge the position of sacculus in the aorta at the operation in-process, makes things convenient for the doctor to remove the sacculus to the active position in the aorta, promotes the precision of operation.

In a second aspect, a balloon catheter device is provided, including inflation and deflation extension tube, outer tube, inner tube and any one of the above-mentioned technical schemes the balloon, inflation and deflation extension tube outer tube and the balloon is sealing connection and intercommunication in proper order, be formed with between inflation and deflation extension tube, outer tube and the balloon with the inflation and deflation chamber of pressure chamber intercommunication, the inner tube wears to locate in proper order the outer tube with in the balloon for wear to establish the guide wire.

By adopting the technical scheme, the balloon catheter device can move the balloon to the appointed position in the aorta so as to facilitate the balloon counterpulsation operation in the aorta at the appointed position; an inflation and exhaust cavity communicated with the first air accommodating cavity is formed among the inflation and exhaust extension pipe, the outer pipe and the balloon, the inflation and exhaust extension pipe is connected with a counterpulsation instrument, and the counterpulsation instrument can inflate or exhaust the balloon through the inflation and exhaust cavity so as to realize the switching between the expansion state and the compression state of the balloon.

In one embodiment, the balloon catheter device is used for sealing the sealing end of the connecting sheath tube, the balloon catheter device further comprises a sealing sheath and a sterile sleeve, the sealing sheath is slidably connected to the outer tube and can be in sealing connection with the sealing end, the sterile sleeve is sleeved on the outer tube, one end of the sterile sleeve is connected with the sealing sheath, and the other end of the sterile sleeve is connected with the inflation and deflation extension tube.

Through adopting above-mentioned technical scheme, the sealed sheath can insert in the sealed end, and then seal the sealed end, because the sealed sheath is the slip joint on the outer tube, can not avoid having the clearance between sealed sheath and the outer tube, the one end and the sealed sheath of aseptic cover are connected, the other end and the inflation extension union coupling of aseptic cover can seal this clearance effectively, and then realize keeping apart sacculus catheter device and external environment, reduce virus or bacterium and get into the probability in the blood vessel through the clearance on the sacculus catheter device.

In one embodiment, the sealing sheath comprises a sheath body and a pushing piece connected to the sheath body, a sliding hole is formed in the sheath body, and the outer tube is arranged in the sliding hole in a penetrating mode.

By adopting the technical scheme, the pushing piece arranged on the sheath body can be pushed by a user, so that the sealing sheath can be pushed and inserted into the sealing end.

In one embodiment, the end of the sheath adjacent to the balloon is cone-shaped.

By adopting the technical scheme, the cone-shaped end part is easier to insert into the opening of the horn-shaped sealing end, so that the quick matching between the cone-shaped end part and the horn-shaped sealing end is realized.

In one embodiment, the end of the inner tube, which is away from the inflation and deflation extension tube, is provided with a tip, and the tip is fixedly connected with the balloon.

By adopting the technical scheme, the diameter of the end part of the tip is smaller, and the tip is not easy to contact with the inner wall of a blood vessel to damage the inner wall of the blood vessel.

In one embodiment, the outer tube is provided with visual markers at both ends of the balloon.

Through adopting above-mentioned technical scheme, the both ends of sacculus are provided with visual mark, can preliminary estimate the implantation degree of depth of sacculus according to this visual mark measurement distance to the operation of the intraaortic sacculus counterpulsation art is carried out under the condition that does not have the X ray apparatus.

In a third aspect, a balloon catheter system is provided, including a guide wire penetrating along a length direction of an aortic blood vessel, a sheath tube sleeved on the guide wire, a counterpulsation instrument and any balloon catheter device in the above technical scheme, the sheath tube includes an insertion section and a sealing end connected with the insertion section, the insertion section is placed in the blood vessel, the sealing end is arranged at a skin position outside the blood vessel, the sealing sheath tube is connected with the sealing end in a sealing manner, and the inflation and deflation extension tube is connected with the counterpulsation instrument.

By adopting the technical scheme, the balloon catheter system provided by the embodiment can assist in completing the operation of the balloon counterpulsation operation in the aorta, acts on the aorta, can reduce the impedance of the aorta, increase the diastolic pressure of the aorta, reduce the myocardial oxygen consumption and increase the oxygen supply, and achieves the aim of improving the heart function.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a compressed state diagram and a folded state diagram of a balloon according to the related art;

FIG. 2 is a compressed state view and a folded state view of a balloon according to a first embodiment of the present utility model;

FIG. 3 is a view of the balloon provided by the present utility model in an expanded state;

FIG. 4 is a compressed state diagram and a folded state diagram of a balloon according to a second embodiment of the present utility model;

FIG. 5 is a compressed state view and a folded state view of a balloon according to a third embodiment of the present utility model;

FIG. 6 is a compressed state view and a folded state view of a balloon according to a fourth embodiment of the present utility model;

FIG. 7 is a schematic structural view of a balloon catheter device according to an embodiment of the present utility model;

fig. 8 is a schematic view of a part of a balloon catheter system according to an embodiment of the present utility model.

The reference numerals in the drawings are as follows:

100. a balloon; 110. a balloon membrane; 120. a pressure chamber; 111. balloon valve; 112. a communication section; 121. a first air-accommodating chamber; 122. a second air-accommodating chamber; 1111. a first end; 1112. a second end;

200. a balloon catheter device; 210. an exhaust extension tube; 220. an outer tube; 230. an inner tube; 231. a tip; 240. a sealing sheath; 241. a sheath body; 242. pushing the sheet; 250. a sterile sleeve; 260. a catheter holder;

300. a balloon catheter system; 310. a guide wire; 320. a sheath; 321. placing in the section; 322. sealing the end;

400. aortic blood vessels.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected" to another element, it can be directly connected or indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing the utility model based on the orientation or positional relationship shown in the drawings, and are not to be construed as limiting the utility model, as the indicating device or element must have a particular orientation, be constructed and operated in a particular orientation.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating relative importance or indicating the number of technical features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. The following describes in more detail the specific implementation of the present utility model in connection with specific embodiments:

as shown in fig. 2, in one embodiment of the present utility model, a balloon 100 is provided and is used for being wrapped on an inner tube 230, the balloon 100 includes a balloon membrane 110 surrounding a pressure chamber 120, the balloon membrane 110 includes at least three balloon petals 111 and at least three communication portions 112, the communication portions 112 and the balloon petals 111 are alternately connected along the circumferential direction of the inner tube 230, the communication portions 112 are wound on the inner tube 230, the balloon membrane 110 is folded along the circumferential direction of the inner tube 230 to form balloon petals 111, and each balloon petal 111 is wound on the communication portion 112 along the circumferential direction of the inner tube 230.

It will be appreciated that the number of balloon valves 111 is at least three, i.e. balloon valves 111 may be N, N being a natural number and N.gtoreq.3, in this embodiment the number of balloon valves 111 is preferably 3.

It can be appreciated that the pressure chamber 120 may be connected to a pipeline of an external inflation and deflation device, and the external inflation and deflation device may inflate gas into the pressure chamber 120, and as the amount of inflated gas increases, the air pressure in the pressure chamber 120 increases, so that the plurality of balloon petals 111 move outwards to form an ellipsoidal or cylindrical inflation structure.

Specifically, the gas to be inflated in balloon 100 is preferably helium, which has a low density, a light weight, minimal laminar flow and a very rapid expansion, and is a desirable inflation gas.

Referring to fig. 2 and 3, fig. 2 (c) shows the compressed state of the balloon 100, fig. 2 (d) shows the folded state of the balloon 100, and fig. 3 shows the unfolded state of the balloon 100. Evacuating the pressure chamber 120 of the balloon 100 may form a compressed state shown in fig. 2 (c), rolling each balloon flap 111 circumferentially along the inner tube 230 may form a folded state shown in fig. 2 (d), and inflating the pressure chamber 120 may form an expanded state shown in fig. 3.

In the second embodiment shown in fig. 4, based on the first embodiment, the number of the balloon petals 111 in the present embodiment is preferably 4, and the 4 balloon petals are circumferentially disposed around the inner tube 230 and end to end. Referring to fig. 3 and 4 together, fig. 3 is an expanded state of the balloon 100, a compressed state of the balloon 100 is shown at (e) in fig. 4, and a folded state of the balloon 100 is shown at (f) in fig. 4.

In the third embodiment shown in fig. 5, based on the first embodiment, the number of balloon petals 111 in the present embodiment is preferably 5, and the 5 balloon petals are circumferentially disposed around the inner tube 230 and end to end. Referring to fig. 3 and 5, fig. 3 is an expanded state of the balloon 100, a compressed state of the balloon 100 is shown at (g) in fig. 5, and a folded state of the balloon 100 is shown at (h) in fig. 5.

As will be appreciated, the cross-sectional perimeter value of the balloon 100 is substantially defined because the balloon 100 needs to be placed into the aorta and after deployment, the vessel wall needs to be squeezed, and the diameter of the vessel wall has a fixed standard value. The greater the number of balloon petals 111 formed by folding the balloon 100, the less chance that the balloon petals 111 overlap with one another, given a constant cross-sectional circumference of the balloon 100.

The implementation principle of this embodiment is as follows: the balloon 100 is placed in the aorta, and when the heart is relaxed and the aortic valve is closed, the pressure cavity 120 of the balloon 100 is rapidly inflated, the balloon 100 is inflated to press the inner wall of the blood vessel of the aorta, and the arterial diastolic pressure is increased, so that the coronary perfusion is increased; when the heart contracts and the aortic valve opens, the air in the pressure chamber 120 of the balloon 100 is pumped away, so that a cavity effect is caused, the effect of reducing afterload can be achieved, the heart discharge amount is increased, and the blood flow perfusion of important viscera is improved.

By adopting the above technical scheme, on the premise that the circumference of the balloon membrane 110 is certain, compared with the balloon with two balloon petals in the related art, the balloon 100 provided by the embodiment has more balloon petals 111, more overlapping parts of the communication part 112 and the balloon petals 111, and further smaller maximum diameter after the balloon 100 is folded, which is beneficial for puncturing into a blood vessel; at least three balloon petals 111 are arranged in the embodiment, so that the length of the single balloon petal 111 wound on the communication part 112 is reduced, the number of turns of the balloon petal 111 wound on the inner tube 230 is reduced, the balloon 100 is inflated and expanded more smoothly in use, and the risk of operation is further reduced.

As an alternative implementation of this embodiment, the end of the balloon valve 111 connected to the communication portion 112 is a first end 1111, the balloon valve 111 has a second end 1112 facing away from the first end 1111, and the first end 1111 of one balloon valve 111 of the two adjacent balloon valves 111 abuts against the second end 1112 of the other balloon valve 111.

By adopting the above technical solution, since the first end 1111 of one balloon valve 111 of the two adjacent balloon valves 111 is abutted with the second end 1112 of the other balloon valve 111, no overlapping portion is formed between the first end 1111 and the second end 1112 of the two adjacent balloon valves 111, and the maximum diameter of the folded balloon 100 is smaller, which is beneficial for puncturing into a blood vessel.

As an alternative implementation of this embodiment, the end of the balloon valve 111 connected to the communication portion 112 is a first end 1111, the balloon valve 111 has a second end 1112 facing away from the first end 1111, and the first end 1111 of one balloon valve 111 of the two adjacent balloon valves 111 is in abutment with the second end 1112 of the other balloon valve 111.

By adopting the above technical solution, since the first end 1111 of one balloon valve 111 of the two adjacent balloon valves 111 is spaced from the second end 1112 of the other balloon valve 111, no overlapping portion is formed between the first end 1111 and the second end 1112 of the two adjacent balloon valves 111, so that the folded maximum diameter of the balloon 100 is smaller, which is beneficial for puncturing into a blood vessel.

Based on the above embodiments, it can be understood that if there is an overlapping portion between two adjacent balloon petals 111, the balloon petals 111 on the inner ring will be pressed when the balloon petals on the outer ring are first pressed, and the balloon petals 111 on the inner ring will be easily not pressed smoothly when the external pressing force is large. While the first end 1111 of one of the adjacent two balloon petals 111 abuts against the second end 1112 of the other balloon petal 111 in this embodiment, or alternatively, the first end 1111 of one of the adjacent two balloon petals 111 is spaced from the second end 1112 of the other balloon petal 111. There is no overlapping portion between the adjacent two balloon petals 111, and the above-mentioned problems can be effectively solved.

As an alternative implementation of this embodiment, the end of the balloon valve 111 connected to the communication portion 112 is a first end 1111, the balloon valve 111 has a second end 1112 facing away from the first end 1111, and the first end 1111 of one balloon valve 111 of the two adjacent balloon valves 111 is in abutting overlapping with the second end 1112 of the other balloon valve 111.

By adopting the above technical solution, although there is an overlapping portion between the first end 1111 and the second end 1112 of the two adjacent balloon petals 111, compared with the balloon with two balloon petals in the related art, the balloon 100 provided in this embodiment has more balloon petals 111, and the overlapping portion of the communication portion 112 and the balloon petals 111 is more, so that the maximum diameter of the folded balloon 100 is smaller, which is beneficial for puncturing into a blood vessel.

In the fourth embodiment shown in fig. 6, based on the first embodiment, the number of balloon petals 111 in the present embodiment is preferably 3, and 3 balloon petals are circumferentially disposed around the inner tube 230, and the first end 1111 of one balloon petal 111 of two adjacent balloon petals 111 is in abutting overlapping with the second end 1112 of the other balloon petal 111. Referring to fig. 3 and 6, fig. 3 is an expanded state of the balloon 100, a compressed state of the balloon 100 is shown at (i) in fig. 6, and a folded state of the balloon 100 is shown at (j) in fig. 5.

As an alternative implementation manner of this embodiment, a first air accommodating cavity 121 is formed between the inner tubes of the communicating portions 112 and 230, a second air accommodating cavity 122 is formed in the balloon valve 111, and the second air accommodating cavity 122 of each balloon valve 111 is communicated with the first air accommodating cavity 121 to form a pressure cavity 120.

By adopting the above technical scheme, the gas filled into the first air accommodating cavity 121 firstly enters the second air accommodating cavity 122 after the gas in the first air accommodating cavity 121 is saturated, so that each second air accommodating cavity 122 communicated with the first air accommodating cavity 121 can be inflated simultaneously, each balloon valve 111 can be inflated simultaneously, and the condition that the balloon valve is inflated and the balloon valve is in a compressed state basically does not occur, so that the stable inflation of the balloon 100 in the inflation process is ensured.

As an alternative to this embodiment, a crease is provided between two adjacent balloon petals 111.

By adopting the above technical scheme, when the balloon 100 is subjected to external force, the stress at the position with crease is more easily concentrated, so that the balloon 100 is more easily bent, and is favorable for changing the balloon 100 from the unfolded state to the compressed state.

As an alternative to this embodiment, the material of balloon 100 is a developing material. It will be appreciated that in general, intra-aortic balloon counterpulsation needs to be performed with the aid of an X-ray machine to facilitate determination of whether the balloon 100 has moved to a designated location in the aorta, and therefore the material of the balloon 100 should preferably be a visualized material that can be visualized by X-ray. Specifically, the developing material includes, but is not limited to: silver nitrate, silver iodide, silver bromide, silver chloride, or the like.

Through adopting above-mentioned technical scheme, sacculus 100 adopts developing material to make, and it can develop when X light irradiation, and then makes things convenient for the doctor to judge the position of sacculus 100 in the aorta at the operation in-process, makes things convenient for the doctor to remove sacculus 100 to the assigned position in the aorta, promotes the precision of operation.

As in the embodiment shown in fig. 7, during an intra-aortic balloon counterpulsation procedure, the physician needs to move balloon 100 to a designated location in the aorta with balloon catheter device 200. The balloon catheter device 200 according to the embodiment of the present utility model includes an inflation and deflation extension tube 210, an outer tube 220, an inner tube 230, and any balloon 100 in any one of the above technical solutions, the balloon 100 according to the present embodiment has the beneficial effects of the balloon 100 in any one of the above embodiments, the inflation and deflation extension tube 210, the outer tube 220, and the balloon 100 are sequentially connected and communicated in a sealing manner, an inflation and deflation cavity communicating with the pressure chamber 120 is formed between the inflation and deflation extension tube 210, the outer tube 220, and the balloon 100, and the inner tube 230 is disposed in the outer tube 220 and the balloon 100 for penetrating the guide wire 310.

As shown in fig. 7 and 8, the implementation principle of the present embodiment is as follows: a guide wire 310 is inserted along the length direction of the aortic vessel, the guide wire 310 is inserted into the inner tube 230, and the inner tube 230 can move along the length direction of the guide wire 310. Under the pushing force, the inner tube 230 is pushed to the designated position of the aorta (as can be determined by X-ray visualization). Then the inflation and deflation extension tube 210 is connected with a counterpulsation instrument; when the diastole starts and the aortic valve closes, the output gas (generally helium) of the counterpulsation instrument sequentially enters the balloon 100 through the inflation and deflation extension tube 210 and the inner tube 230, and the balloon 100 stretches and expands to further squeeze the vessel wall of the aorta, so that the arterial diastole pressure is increased, and the coronary perfusion is increased; when the heart contracts and the aortic valve is opened, the counterpulsation instrument pumps the gas in the balloon 100 away, so that a cavity effect is caused, the effect of reducing afterload is achieved, and the heart blood discharge amount is increased.

By adopting the above technical solution, the balloon catheter device 200 can move the balloon 100 to a designated position in the aorta so as to perform the intraaortic balloon counterpulsation at the designated position; an inflation and deflation cavity communicated with the pressure cavity 120 is formed among the inflation and deflation extension tube 210, the outer tube 220 and the balloon 100, the inflation and deflation extension tube 210 is connected with a counterpulsation apparatus, and the counterpulsation apparatus can inflate or deflate the balloon 100 through the inflation and deflation cavity so as to realize the switching between the deployment state and the compression state of the balloon 100.

As an alternative implementation of this embodiment, the balloon catheter device 200 is used for sealing the sealing end 322 of the connecting sheath 320, the balloon catheter device 200 further includes a sealing sheath 240 and a sterile sleeve 250, the sealing sheath 240 is slidingly connected to the outer tube 220 and can be in sealing connection with the sealing end 322, the sterile sleeve 250 is sleeved on the outer tube 220, one end of the sterile sleeve 250 is connected with the sealing sheath 240, and the other end of the sterile sleeve 250 is connected with the inflation and deflation extension tube 210. In particular, the sterile sleeve 250 is preferably made of polyurethane material and is sterilized. Since the sealing end 322 of the sheath 320 has an opening through which the balloon 100 passes and is in direct communication with the blood vessel, harmful substances such as bacteria and viruses may enter the blood vessel through the opening if the sealing operation is not performed on the opening, causing wound infection or other damage.

Through adopting above-mentioned technical scheme, sealing sheath 240 can insert in sealed end 322, and then seal sealed end 322, because sealing sheath 240 is the slip joint on outer tube 220, can not avoid having the clearance between sealing sheath 240 and the outer tube 220, the one end of aseptic cover 250 is connected with sealing sheath 240, the other end of aseptic cover 250 is connected with inflation and deflation extension tube 210, can seal this clearance effectively, and then realize keeping apart sacculus catheter device 200 and external environment, reduce the probability that virus or bacterium got into the blood vessel through the clearance on the sacculus catheter device 200.

As an alternative implementation manner of this embodiment, the sealing sheath 240 includes a sheath body 241 and a pushing piece 242 connected to the sheath body 241, a sliding hole (not shown) is provided on the sheath body 241, and the outer tube 220 is inserted into the sliding hole.

By adopting the above technical scheme, the pushing piece 242 arranged on the sheath body 241 can be pushed by a user, so that the sealing sheath 240 can be pushed and inserted into the sealing end 322.

As an alternative to this embodiment, the end of the sheath 241 adjacent to the balloon 100 is cone-shaped. The opening of the sealing end 322 is generally flared and the end of the sheath 241 adjacent the balloon 100 is preferably cone-shaped for clearance fit with the flared opening. The cone is provided with a sealing material layer, and the sealing material is preferably flexible materials such as rubber.

By adopting the technical scheme, the cone-shaped end part is easier to insert into the opening of the horn-shaped sealing end 322, so that the quick matching between the cone-shaped end part and the horn-shaped sealing end 322 is realized.

As an alternative implementation of this embodiment, the end of the inner tube 230 facing away from the inflation and deflation extension tube 210 is provided with a tip 231, and the tip 231 is fixedly connected with the balloon 100. Because the diameter of the blood vessel is smaller and the inner wall of the blood vessel is weaker, the end of the inner tube 230 is easily contacted with the inner wall of the blood vessel to damage the inner wall of the blood vessel during the operation, so that the probability of damaging the inner wall of the blood vessel by the end of the inner tube 230 is reduced, the smoothness of the operation is improved, and the end of the inner tube 230 deviating from the inflation and deflation extension tube 210 is preferably provided with a tip 231.

By adopting the above technical scheme, the diameter of the tip 231 is smaller, and the tip is not easy to contact with the inner wall of a blood vessel to damage the inner wall of the blood vessel.

As an alternative to this embodiment, visual markers (not shown) are provided on the outer tube 220 at both ends of the balloon 100. Since the balloon 100 needs to be moved to the open distal end of the left subclavian artery in the aorta for effective function, the intra-aortic balloon counterpulsation should be performed with the aid of an X-ray machine as much as possible in order to determine the position of the balloon 100 in the aorta. Under the condition of no X-ray machine, rough judgment can be carried out according to visual marks arranged at two ends of the balloon 100, the distance from the sternum angle to the navel is measured firstly, and then the distance from the navel to the femoral artery puncture point is measured, wherein the sum of the distances is the placement depth of the balloon 100. This distance is remembered by visual indicia on outer tube 220.

By adopting the above technical scheme, the two ends of the balloon 100 are provided with the visual marks, and the implantation depth of the balloon 100 can be estimated preliminarily according to the visual mark measurement distance, so that the operation of the intra-aortic balloon counterpulsation can be performed without an X-ray machine.

As an alternative implementation manner of this embodiment, a catheter seat 260 is further disposed between the inflation and deflation extension tube 210 and the outer tube 220, a Y-shaped interface is disposed on the catheter seat 260, one end of the Y-shaped interface is connected with the outer tube 220, one interface at the other end of the Y-shaped interface is connected with the inflation and deflation extension tube 210, and the other interface at the other end of the Y-shaped interface is used for being connected with a flushing device.

As shown in the embodiment of fig. 8, the embodiment of the present utility model further provides a balloon catheter system 300, which includes a guide wire 310 penetrating along the length direction of an aortic blood vessel 400, a sheath tube 320 sleeved on the guide wire 310, a counterpulsation apparatus (not shown), and the balloon catheter device 200 according to any of the above technical solutions, wherein the balloon catheter device 200 has the beneficial effects of the balloon catheter device 200 according to any of the above embodiments, the sheath tube 320 includes an insertion section 321 and a sealing end 322 connected with the insertion section 321, the insertion section 321 is disposed in the aortic blood vessel 400, the sealing end 322 is disposed at the skin outside the aortic blood vessel 400, the sealing sheath 240 is connected with the sealing end 322 in a sealing manner, and the inflation and deflation extension tube 210 is connected with the counterpulsation apparatus. The counterpulsation apparatus can achieve inflation or deflation of balloon 100 through inflation and deflation extension tube 210. It will be appreciated that the guide wire 310 is preferably a steel wire, which has good strength; but may be filaments made of other materials, which are not limited in this embodiment.

Referring to fig. 7 and 8, the implementation principle of the present embodiment is as follows: firstly, puncture operation is carried out on the aorta (generally, femoral artery is preferred) of a patient by using puncture, after the puncture is successful, a matched guide wire 310 is sent into the aorta from a puncture hole, the puncture needle is pulled out, skin at the puncture position is incised by using a sharp knife, a vasodilator is sent along the guide wire 310, the femoral artery orifice is expanded, the vasodilator is pushed out, then the guide wire 310 is sent into a guide and a sheath tube 320, the guide is withdrawn, the sheath tube 320 is reserved, the sheath tube 320 needs to be reserved in the aorta, and the skin at the incision position can be spread by the sheath tube 320, so that the incision can not be closed, and further the subsequent operation is convenient; meanwhile, the sheath 320 can separate the skin at the incision from the outer tube 220, so that friction between the outer tube 220 and the skin at the incision is avoided when the outer tube 220 moves. The insertion section 321 is now positioned within the aortic vessel and the sealing end 322 is positioned outside the aortic vessel. The balloon 100 of the balloon catheter device 200 is then fed along the guidewire 310 to a designated location in the aorta (this portion of the implementation principle has been described above and will not be described again here as above).

By adopting the above technical scheme, the balloon catheter system 300 provided in this embodiment can assist in completing the operation of the balloon counterpulsation in the aorta, and acts on the aorta to reduce the aortic impedance, increase the aortic diastolic pressure, reduce the myocardial oxygen consumption, increase the oxygen supply, and achieve the purpose of improving the heart function.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. The balloon is used for wrapping an inner tube and is characterized by comprising a balloon membrane which surrounds a pressure cavity, wherein the balloon membrane comprises at least three communication parts and at least three balloon petals, the communication parts and the balloon petals are alternately connected along the circumference of the inner tube, the communication parts are wound on the inner tube, the balloon membrane is folded along the circumference of the inner tube to form the balloon petals, and each balloon petal is wound on the communication parts along the circumference of the inner tube.

2. The balloon of claim 1, wherein the end of the balloon valve connected to the communication is a first end, the balloon valve has a second end facing away from the first end, and the first end of one of the adjacent two balloon valves abuts the second end of the other balloon valve.

3. The balloon of claim 1, wherein the end of the balloon valve connected to the communication is a first end, the balloon valve has a second end facing away from the first end, and the first end of one of the adjacent two balloon valves is spaced from the second end of the other balloon valve.

4. The balloon of claim 1, wherein the end of the balloon valve connected to the communication is a first end, the balloon valve has a second end facing away from the first end, and the first end of one of the adjacent two balloon valves overlaps the second end of the other balloon valve.

5. The balloon catheter device is characterized by comprising an inflation and deflation extension tube, an outer tube, an inner tube and the balloon according to any one of claims 1 to 4, wherein the inflation and deflation extension tube, the outer tube and the balloon are sequentially connected and communicated in a sealing manner, an inflation and deflation cavity communicated with the pressure cavity is formed among the inflation and deflation extension tube, the outer tube and the balloon, and the inner tube is sequentially arranged in the outer tube and the balloon in a penetrating manner and used for penetrating a guide wire.

6. The balloon catheter device of claim 5, wherein said balloon catheter device is adapted to sealingly connect to a sealed end of a sheath tube, said balloon catheter device further comprising a sealing sheath slidably connected to said outer tube and adapted to sealingly connect to said sealed end, and a sterile sleeve disposed over said outer tube, one end of said sterile sleeve being connected to said sealing sheath, the other end of said sterile sleeve being connected to said inflation and deflation extension tube.

7. The balloon catheter device of claim 6, wherein said sealing sheath comprises a sheath body and a push tab attached to said sheath body, said sheath body having a sliding aperture therethrough, said outer tube being disposed through said sliding aperture.

8. The balloon catheter device of claim 7, wherein an end of said sheath proximal to said balloon is cone-shaped.

9. The balloon catheter device of claim 5, wherein an end of said inner tube facing away from said inflation and deflation extension tube is provided with a tip, said tip being fixedly connected to said balloon.

10. The balloon catheter system comprises a guide wire penetrating along the length direction of an aortic blood vessel, a sheath tube sleeved on the guide wire, a counterpulsation instrument and the balloon catheter device according to any one of claims 6-8, wherein the sheath tube comprises an imbedding section and a sealing end connected with the imbedding section, the imbedding section is placed in the blood vessel, the sealing end is arranged at the skin outside the blood vessel, the sealing sheath tube is connected with the sealing end in a sealing mode, and the inflation and deflation extension tube is connected with the counterpulsation instrument.