CN219501842U - Balloon catheter - Google Patents
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- CN219501842U CN219501842U CN202221971341.XU CN202221971341U CN219501842U CN 219501842 U CN219501842 U CN 219501842U CN 202221971341 U CN202221971341 U CN 202221971341U CN 219501842 U CN219501842 U CN 219501842U
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Abstract
The utility model relates to the technical field of medical instruments, and provides a balloon catheter which comprises a first tube body, a second tube body, a first valve and a second valve; a first cavity is arranged in the first tube body, one end of the first tube body is connected with the middle part of the second tube body, and the other end of the first tube body is communicated with the blood storage device; the first tube body is provided with a blood discharging hole which is communicated with the first cavity; the first end of the second pipe body stretches into the first cavity, and the second end of the second pipe body is provided with a suction hole; the first valve and the second valve are both arranged in the first cavity; during systole, the first valve opens the first end of the second tube, and the second valve closes the blood discharge hole; during diastole, the first valve closes the first end of the second tube, and the second valve opens the blood discharge hole; the utility model can suck blood from the left ventricle in the systole, avoid sucking the blood of the ascending aorta out of the body by mistake, discharge the blood into the ascending aorta in the diastole, and avoid discharging the blood into the left ventricle by mistake.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a balloon catheter.
Background
With the change of life style of people, the incidence rate of cardiovascular diseases is continuously increased; cardiogenic shock is a critical state caused by various heart diseases such as acute myocardial infarction, acute myocarditis and the like.
The existing treatment mode of cardiogenic shock is to lead the blood of the left ventricle to the outside of the body by using an interventional left ventricle auxiliary device so as to reduce the heart load, thereby replacing the ventricle to do work and increasing the peripheral blood supply and realizing the ejection function of partially or completely replacing the left ventricle; this way, blood is continuously drawn out of the left ventricle and expelled into the periphery during both systole and diastole of the heart, resulting in a advection with hemodynamic characteristics that are not in conformity with physiological conditions, which can cause chronic damage to the organ during use.
Disclosure of Invention
The utility model provides a balloon catheter which is used for solving or improving the problem that the existing interventional left ventricle auxiliary device has advection blood flow with the hemodynamic characteristics not conforming to the physiological state.
The present utility model provides a balloon catheter comprising: the device comprises a first tube body, a second tube body, a first valve and a second valve;
a first cavity is arranged in the first tube body, one end of the first tube body is connected with the middle part of the second tube body, and the other end of the first tube body is communicated with the blood storage device; the first tube body is provided with a blood discharging hole, and the blood discharging hole is communicated with the first cavity;
the first end of the second pipe body extends into the first cavity, and the second end of the second pipe body is provided with a suction hole;
the first valve and the second valve are both arranged in the first cavity, the first valve is used for controlling the open-close state of the first end of the second tube body, and the second valve is used for controlling the open-close state of the blood discharge hole;
the first valve opens a first end of the second tube body, and the second valve closes the blood discharge hole, with blood flowing in an extending direction of the second tube body to the first tube body;
the first valve closes a first end of the second tube body and the second valve opens the blood discharge hole with blood flowing in an extending direction of the first tube body to the second tube body.
According to the present utility model, there is provided a balloon catheter, the first tube body comprising: an expansion part and a switching part; the first cavity is formed in the expansion part, the first end of the expansion part is connected with the middle part of the second pipe body, and the second end of the expansion part is communicated with the switching part.
According to the balloon catheter provided by the utility model, the diameter of the expansion part gradually decreases along the extending direction from the middle part of the expansion part to the first end or the second end of the expansion part, and the blood discharging hole is arranged near the first end of the expansion part.
According to the balloon catheter provided by the utility model, one end of the first valve is connected with the first end of the second tube body, and the first valve can swing relative to the second tube body under the action of blood so as to open or close the first end of the second tube body; wherein, the covering area of the first valve is larger than the orifice area of the second tube body.
According to the present utility model, there is provided a balloon catheter, further comprising: a skeleton; the framework is arranged in the first cavity, the framework is sleeved on the second pipe body, a second cavity is defined between the framework and the inner wall surface of the first cavity, and the blood discharging hole is communicated with the second cavity; the framework is provided with a communication port, and the second valve is connected with the framework to control the opening or closing of the communication port.
According to the present utility model, there is provided a balloon catheter, the skeleton comprising: a first annular portion and a second annular portion; the first annular part is sleeved on the outer wall surface of the second pipe body, the second annular part is sleeved on the outer side of the second pipe body and is connected with the inner wall surface of the first cavity, and the communication port is formed between the first annular part and the second annular part; one end of the second valve is connected with the first annular part; the second valve can swing relative to the second annular part under the action of blood so as to open or close the communication port.
According to the balloon catheter provided by the utility model, the framework further comprises: a plurality of connection parts; the plurality of connecting parts are arranged along the circumferential direction of the first annular part, one end of each connecting part is connected with the first annular part, and the other end of each connecting part is connected with the second annular part so as to form a plurality of communication ports between the first annular part and the second annular part; the second valves are arranged in a plurality, and the second valves are arranged in one-to-one correspondence with the communication ports.
According to the balloon catheter provided by the utility model, a plurality of blood discharging holes are formed, and the plurality of blood discharging holes and the plurality of communication ports are arranged in one-to-one correspondence.
According to the balloon catheter provided by the utility model, the second tube body comprises a first section and a second section, and the second section is in a truncated cone shape; the first section is connected with the second section, and the suction hole is formed in the conical surface of the second section.
According to the balloon catheter provided by the utility model, a plurality of suction holes are formed, and the plurality of suction holes are uniformly distributed along the circumferential direction of the second section.
According to the balloon catheter provided by the utility model, the first valve and the second valve are arranged in the first cavity of the first tube body, and can be adaptively adjusted to corresponding positions under the condition that the blood flowing direction is changed, so that blood in the left ventricle is intermittently conveyed into the ascending aorta along with the contraction and the relaxation of the heart, meanwhile, the blood in the ascending aorta is prevented from being sucked out of the body by mistake when the blood is sucked from the left ventricle, and the blood is prevented from being discharged into the left ventricle by mistake when the blood is discharged into the ascending aorta;
when the heart is in a systolic phase, a liquid pump in the blood storage device performs blood drawing operation, so that negative pressure is formed in the first cavity, the pressure on the upper side of the first valve is smaller than the pressure on the lower side, namely, the two sides of the first valve are provided with positive pressure difference, when blood in the second tube flows to the first valve, the first valve is jacked up by the blood under the action of the positive pressure difference, so that the first end of the second tube is opened, the blood in the second tube can flow into the first cavity, and the blood in the left ventricle sequentially enters the blood storage device through the suction hole, the second tube and the first cavity, so that temporary storage is performed on the blood by the blood storage device; at the same time, the blood in the ascending aorta enters the first cavity through the blood discharge hole under the action of negative pressure, and the blood jacks up the second valve, so that the blood discharge hole is closed by the second valve, and the blood in the ascending aorta is prevented from being sucked into the blood storage device; wherein blood flows in the extending direction from the second tube body to the first tube body in the process.
When the heart is in diastole, a liquid pump in the blood storage device performs a blood pumping operation so as to pump blood into the first cavity, at the moment, the pressure on the upper side of the first valve is larger than the pressure on the lower side, namely, the two sides of the first valve have negative pressure difference, and the blood in the first cavity presses the first valve on the first end of the second tube body so as to seal the first end of the second tube body, so that the blood is prevented from being pumped into the left ventricle; when the blood in the first cavity flows to the second valve, the blood presses the second valve, so that the blood discharging hole is opened, the blood in the first cavity can be discharged into the ascending aorta through the blood discharging hole, and the blood in the blood storage device can be sequentially conveyed into the ascending aorta through the first cavity and the blood discharging hole; wherein blood flows in the extending direction from the first tube body to the second tube body in the process.
According to the balloon catheter disclosed by the utility model, under the condition that the blood flow direction is changed, the opening and closing state of the first end of the second tube body is controlled through the first valve, and the opening and closing state of the blood discharging hole is controlled through the second valve, so that the blood in the left ventricle is sucked into the blood storage device in the systole, and the blood in the blood storage device is pumped into the ascending aorta in the diastole, so that the heart is assisted or completely replaced to complete the ejection function, and the load of the heart is reduced; at the same time, the second valve can prevent the blood in the ascending aorta from being pumped into the blood storage device, and the first valve can prevent the blood in the blood storage device from being pumped into the left ventricle, so that the reliability of the balloon catheter is improved; because the heart is alternately contracted and expanded, namely the blood drawing and the blood pumping of the balloon catheter are alternately performed, the dynamic characteristics of the blood conveyed by the balloon catheter are more in accordance with the advection blood flow of the physiological state, and the damage of organs in the treatment process is reduced.
Drawings
In order to more clearly illustrate the utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the overall structure of a balloon catheter provided by the present utility model;
FIG. 2 is a schematic view of the balloon catheter provided by the utility model when the heart is in systole;
FIG. 3 is a schematic view of the balloon catheter provided by the present utility model when the heart is in diastole;
fig. 4 is a schematic structural view of a skeleton provided by the present utility model.
Reference numerals:
1: a first tube body; 11: a blood discharge hole; 12: an expansion section; 13: a switching part; 2: a second tube body; 21: a suction hole; 22: a first segment; 23: a second segment; 3: a first valve; 4: a second valve; 5: a skeleton; 51: a first annular portion; 52: a second annular portion; 53: and a connecting part.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present utility model will be understood in detail by those of ordinary skill in the art.
A balloon catheter provided by the present utility model is described below with reference to fig. 1 to 4.
As shown in fig. 1 to 3, the balloon catheter shown in the present embodiment includes: a first tube 1, a second tube 2, a first valve 3 and a second valve 4.
A first cavity is arranged in the first tube body 1, one end of the first tube body 1 is connected with the middle part of the second tube body 2, and the other end of the first tube body 1 is communicated with the blood storage device; the first tube body 1 is provided with a blood discharging hole 11, and the blood discharging hole 11 is communicated with the first cavity; the first end of the second pipe body 2 extends into the first cavity, and the second end of the second pipe body 2 is provided with a suction hole 21; the first valve 3 and the second valve 4 are both arranged in the first cavity, the first valve 3 is used for controlling the open-close state of the first end of the second tube body 2, and the second valve 4 is used for controlling the open-close state of the blood discharge hole 11; in the practical application process, the second end of the second tube body 2 stretches into the left ventricle, and the blood discharge hole 11 is arranged in the ascending aorta, so that blood in the left ventricle can enter the second tube body 2 through the suction hole 21;
in the case where blood flows in the extending direction of the second tube 2 to the first tube 1, the first valve 3 opens the first end of the second tube 2, and the second valve 4 closes the blood discharge hole 11;
in the case where blood flows in the extending direction of the first tube body 1 to the second tube body 2, the first valve 3 closes the first end of the second tube body 2, and the second valve 4 opens the blood discharge hole 11.
Specifically, the balloon catheter shown in the embodiment, by disposing the first valve 3 and the second valve 4 in the first cavity of the first tube body 1, the first valve 3 and the second valve 4 can be adaptively adjusted to corresponding positions under the condition that the blood flow direction is changed, so as to intermittently convey the blood in the left ventricle into the ascending aorta along with the contraction and the relaxation of the heart, and simultaneously avoid the blood in the ascending aorta from being erroneously sucked out of the body when the blood is sucked from the left ventricle, and avoid the blood from being erroneously discharged into the left ventricle when the blood is discharged into the ascending aorta;
referring to fig. 2, when the heart is in the systolic phase, the liquid pump in the blood storage device performs a blood drawing operation, so that negative pressure is formed in the first cavity, the pressure on the upper side of the first valve 3 is smaller than the pressure on the lower side, namely, the two sides of the first valve 3 have positive pressure difference, when the blood in the second tube body 2 flows to the first valve 3, the blood pushes up the first valve 3 under the effect of the positive pressure difference, so that the first end of the second tube body 2 is opened, the blood in the second tube body 2 can flow into the first cavity, and the blood in the left ventricle sequentially passes through the suction hole 21, the second tube body 2 and the first cavity to enter the blood storage device, and the blood storage device temporarily stores the blood; at the same time, the blood in the ascending aorta enters the first cavity through the blood discharge hole 11 under the action of negative pressure, and the blood props up the second valve 4, so that the blood discharge hole 11 is closed by the second valve 4, and the blood in the ascending aorta is prevented from being sucked into the blood storage device; wherein the blood flows in the direction of extension of the second tube body 2 to the first tube body 1 during this process, the direction of flow of the blood being indicated by arrows in fig. 2.
Referring to fig. 3, when the heart is in diastole, the liquid pump in the blood storage device performs a pumping operation to pump blood into the first chamber, at which time the pressure on the upper side of the first valve 3 is greater than the pressure on the lower side, i.e., the two sides of the first valve 3 have a negative pressure difference, and the blood in the first chamber presses the first valve 3 against the first end of the second tube 2, thereby closing the first end of the second tube 2 to avoid pumping blood into the left ventricle; when the blood in the first cavity flows to the second valve 4, the blood presses the second valve 4, so that the blood discharge hole 11 is opened, the blood in the first cavity can be discharged into the ascending aorta through the blood discharge hole 11, and the blood in the blood storage device can be sequentially conveyed into the ascending aorta through the first cavity and the blood discharge hole 11; wherein the blood flows in the direction of extension of the first tube body 1 to the second tube body 2 during this process, the direction of flow of the blood is indicated by arrows in fig. 3.
In the balloon catheter shown in the embodiment, under the condition that the blood flow direction is changed, the opening and closing state of the first end of the second tube body 2 is controlled through the first valve 3, and the opening and closing state of the blood discharging hole 11 is controlled through the second valve 4, so that the blood in the left ventricle is sucked into the blood storage device in the systole, and the blood in the blood storage device is pumped into the ascending aorta in the diastole, thereby assisting or completely replacing the heart to complete the ejection function, and further reducing the load of the heart; at the same time, the second valve 4 can prevent the blood in the ascending aorta from being pumped into the blood storage device, and the first valve 3 can prevent the blood in the blood storage device from being pumped into the left ventricle, so that the reliability of the balloon catheter is improved; since the heart is alternately contracted and expanded, that is, the blood drawing and the blood pumping of the balloon catheter shown in the embodiment are alternately performed, the dynamic characteristics of the blood conveyed by the balloon catheter are more in accordance with the physiological state of the advection blood flow, and the damage of organs in the treatment process is reduced.
In some embodiments, as shown in fig. 1 to 3, the first pipe body 1 shown in the present embodiment includes: an expansion part 12 and a switching part 13; the first cavity is formed in the expansion part 12, a first end of the expansion part 12 is connected with the middle part of the second pipe body 2, and a second end of the expansion part 12 is communicated with the switching part 13.
Specifically, the expansion part 12 is communicated with the blood storage device through the adapter part 13; the expansion portion 12 is an elastic body, and when an inward force is applied to the expansion portion 12 during the installation of the balloon catheter, the volume of the expansion portion 12 decreases, and when the installation is completed, the force is canceled, and the volume of the expansion portion 12 increases, that is, the expansion portion 12 expands.
In some embodiments, as shown in fig. 1 to 3, the diameter of the expansion portion 12 gradually decreases in the extending direction from the middle portion of the expansion portion 12 to the first end or the second end of the expansion portion 12, and the blood discharge hole 11 is provided near the first end of the expansion portion 12.
Specifically, the expansion portion 12 is in a spindle-shaped structure with thick middle and thin two ends, the diameters of the two ends of the expansion portion 12 are larger than the diameter of the second tube body 2 and the diameter of the switching portion 13, namely, the first cavity in the expansion portion 12 can store a certain amount of blood, so that when blood drawing and blood pumping alternate, the blood flow conveyed through the first cavity is larger, and the problem that clinical treatment requirements are difficult to meet due to limited blood flow when the tube diameter is smaller is avoided.
In some embodiments, as shown in fig. 2 and 3, one end of the first valve 3 is connected to the first end of the second tube 2, and the first valve 3 can swing relative to the second tube 2 under the action of blood, it is understood that the swing direction of the first valve 3 is the same as the flow direction of the blood, so as to open or close the first end of the second tube 2; wherein the covering area of the first valve 3 is larger than the orifice area of the second tube body 2.
Specifically, when the blood drawing operation is performed, the blood pushes the first valve 3 to swing upward, so that the first end of the second tube body 2 is opened, and the blood in the second tube body 2 can flow into the first cavity; when the pumping operation is performed, the blood pushes the first valve 3 to swing downwards, so that the first end of the second tube body 2 is closed, and the blood is prevented from being pumped into the left ventricle; the covering area of the first valve 3 is set to be larger than the area of the pipe orifice of the second pipe body 2, so that the closing effect of the first valve 3 can be ensured, and the pipe orifice of the second pipe body 2 can play a good supporting and limiting role on the first valve 3, so that the first valve 3 is prevented from excessively swinging into the second pipe body 2.
In some embodiments, as shown in fig. 2 to 4, the balloon catheter shown in the present embodiment further includes: a skeleton 5; the framework 5 is arranged in the first cavity, the framework 5 is sleeved on the second pipe body 2, a second cavity is defined between the framework 5 and the inner wall surface of the first cavity, and the blood discharge hole 11 is communicated with the second cavity; the framework 5 is provided with a communication port, and the second valve 4 is connected with the framework 5 to control the opening or closing of the communication port.
Specifically, the side of the skeleton 5 facing the blood discharging hole 11, the inner wall surface of the first cavity and the outer wall surface of the second tube body 2 enclose a second cavity, when blood drawing operation is performed, a small amount of blood in the ascending aorta enters the second cavity through the blood discharging hole 11 and pushes the second valve 4 to swing upwards, so that the second valve 4 seals the communication opening, and the blood in the second cavity cannot flow into the first cavity, namely, the second valve 4 seals the blood discharging hole 11, so that the blood in the ascending aorta is prevented from being sucked into the blood storage device; when the blood pumping operation is performed, the blood in the first cavity pushes the second valve 4 to swing downwards, so that the communication port is opened by the second valve 4, and the blood in the first cavity can flow into the second cavity through the communication port and then is input into the ascending aorta through the blood discharge hole 11, namely, the blood discharge hole 11 is opened by the second valve 4.
In some embodiments, as shown in fig. 2 to 4, the skeleton 5 shown in the present embodiment includes: a first annular portion 51 and a second annular portion 52; the first annular part 51 is sleeved on the outer wall surface of the second pipe body 2, the second annular part 52 is sleeved on the outer side of the second pipe body 2 and connected with the inner wall surface of the first cavity, and a communication port is formed between the first annular part 51 and the second annular part 52; the diameter of the first annular part 51 is smaller than that of the second annular part 52, and one end of the second valve 4 is connected with the first annular part 51; the second valve 4 can oscillate relative to the second annular portion 52 under the action of blood to effect opening or closing of the communication opening.
Specifically, since the diameter of the first annular portion 51 is smaller than the diameter of the second annular portion 52, the second valve 4 is bowl-shaped overall, the second valve 4 is unfolded when the second valve 4 swings toward the second annular portion 52, and the second valve 4 is gathered when the second valve 4 swings away from the second annular portion 52; when the second valve 4 swings to the second annular portion 52, the second valve 4 is correspondingly overlapped on the second annular portion 52, so that a sealing surface is integrally formed by the second valve 4 to seal the area between the first annular portion 51 and the second annular portion 52.
In some embodiments, as shown in fig. 4, the skeleton 5 shown in this embodiment includes: a plurality of connection portions 53; the plurality of connection portions 53 are arranged along the circumferential direction of the first annular portion 51, one end of the connection portion 53 is connected to the first annular portion 51, and the other end of the connection portion 53 is connected to the second annular portion 52, that is, the connection portion 53 divides the area between the first annular portion 51 and the second annular portion 52 into a plurality of portions to form a plurality of communication ports between the first annular portion 51 and the second annular portion 52; the second valves 4 are provided with a plurality of, and the plurality of second valves 4 are arranged in one-to-one correspondence with the plurality of communication ports.
Specifically, by arranging the connecting parts 53, the overall stability of the framework 5 is ensured, and when the second valve 4 swings to the second annular part 52, the second valve 4 can be also adaptively attached to the two adjacent connecting parts 53, so that the second valve 4 is supported by the connecting parts 53, excessive swing of the second valve 4 is avoided, and the blocking effect of the second valve 4 on the communication port is ensured; by providing a plurality of second valves 4, the flow of blood is relatively uniform and stable under the condition that the second valves 4 are pushed to swing.
In some embodiments, as shown in fig. 2 and 3, a plurality of blood discharge holes 11 are provided in the present embodiment, and a plurality of blood discharge holes 11 are provided in one-to-one correspondence with a plurality of communication ports.
Specifically, by arranging the blood discharging holes 11 in one-to-one correspondence with the communication ports, when blood drawing operation is performed, blood entering from the blood discharging holes 11 can directly act on the second valve 4 at the corresponding communication port, so that the sealing efficiency of the second valve 4 on the communication port is improved, and the blood in the ascending aorta is prevented from being drawn into the blood storage device; when the blood pumping operation is carried out, the blood in the first cavity pushes away the second valve 4 and can be smoothly discharged into the ascending aorta through the corresponding blood discharging hole 11, so that the blood pumping efficiency is improved; because the communication ports are circumferentially arranged, correspondingly, the blood discharge holes 11 are circumferentially arranged, and blood is discharged from the plurality of blood discharge holes 11 respectively in the blood pumping process, compared with a single blood discharge hole 11, the blood flow is uniform and stable through the plurality of blood discharge holes 11, and meanwhile, the blood discharge amount is ensured.
In some embodiments, as shown in fig. 1 to 3, the second pipe body 2 in this embodiment includes a first section 22 and a second section 23, where the second section 23 is in a truncated cone shape, and the first section 22 is in a cylindrical shape; the first section 22 is connected to the second section 23, the suction opening 21 is provided in the conical surface of the second section 23, and the first section 22 is adapted to extend into the first cavity.
Specifically, by arranging the second segment 23 in a circular truncated cone shape, and forming the suction hole 21 on the conical surface of the second segment 23, the flow direction of the blood in the suction hole 21 and the flow direction of the blood in the first segment 22 form an acute angle, and compared with the flow direction of the blood in the straight tube, the flow direction of the blood in the suction hole 21 and the flow direction of the blood in the straight tube form a right angle, the circular truncated cone-shaped second segment 23 in the embodiment can smoothly introduce the blood in the left ventricle into the first segment 22, and reduce the resistance of the blood flow.
In some embodiments, as shown in fig. 1 to 3, the suction holes 21 shown in the present embodiment are provided in plurality, and the plurality of suction holes 21 are uniformly distributed along the circumferential direction of the second segment 23.
Specifically, by uniformly distributing the plurality of suction holes 21 in the circumferential direction, uniformity of blood suction in all directions is ensured in the case where the amount of blood suction is satisfied.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. A balloon catheter, comprising: the device comprises a first tube body, a second tube body, a first valve and a second valve;
a first cavity is arranged in the first tube body, one end of the first tube body is connected with the middle part of the second tube body, and the other end of the first tube body is communicated with the blood storage device; the first tube body is provided with a blood discharging hole, and the blood discharging hole is communicated with the first cavity;
the first end of the second pipe body extends into the first cavity, and the second end of the second pipe body is provided with a suction hole;
the first valve and the second valve are both arranged in the first cavity, the first valve is used for controlling the open-close state of the first end of the second tube body, and the second valve is used for controlling the open-close state of the blood discharge hole;
the first valve opens a first end of the second tube body, and the second valve closes the blood discharge hole, with blood flowing in an extending direction of the second tube body to the first tube body;
the first valve closes a first end of the second tube body and the second valve opens the blood discharge hole with blood flowing in an extending direction of the first tube body to the second tube body.
2. The balloon catheter of claim 1, wherein the balloon catheter is configured to be positioned over the patient,
the first pipe body includes: an expansion part and a switching part;
the first cavity is formed in the expansion part, the first end of the expansion part is connected with the middle part of the second pipe body, and the second end of the expansion part is communicated with the switching part.
3. The balloon catheter of claim 2, wherein the balloon catheter is configured to be positioned over the patient,
the diameter of the expansion part gradually decreases along the extending direction from the middle part of the expansion part to the first end or the second end of the expansion part, and the blood discharging hole is arranged near the first end of the expansion part.
4. The balloon catheter of claim 1, wherein the balloon catheter is configured to be positioned over the patient,
one end of the first valve is connected with the first end of the second tube body, and the first valve can swing relative to the second tube body under the action of blood so as to open or close the first end of the second tube body;
wherein, the covering area of the first valve is larger than the orifice area of the second tube body.
5. The balloon catheter of claim 1, wherein the balloon catheter is configured to be positioned over the patient,
the balloon catheter further comprises: a skeleton;
the framework is arranged in the first cavity, the framework is sleeved on the second pipe body, a second cavity is defined between the framework and the inner wall surface of the first cavity, and the blood discharging hole is communicated with the second cavity;
the framework is provided with a communication port, and the second valve is connected with the framework to control the opening or closing of the communication port.
6. The balloon catheter of claim 5, wherein the balloon catheter is configured to move,
the skeleton includes: a first annular portion and a second annular portion;
the first annular part is sleeved on the outer wall surface of the second pipe body, the second annular part is sleeved on the outer side of the second pipe body and is connected with the inner wall surface of the first cavity, and the communication port is formed between the first annular part and the second annular part;
one end of the second valve is connected with the first annular part; the second valve can swing relative to the second annular part under the action of blood so as to open or close the communication port.
7. The balloon catheter of claim 6, wherein the balloon catheter is configured to move,
the skeleton further comprises: a plurality of connection parts;
the plurality of connecting parts are arranged along the circumferential direction of the first annular part, one end of each connecting part is connected with the first annular part, and the other end of each connecting part is connected with the second annular part so as to form a plurality of communication ports between the first annular part and the second annular part;
the second valves are arranged in a plurality, and the second valves are arranged in one-to-one correspondence with the communication ports.
8. The balloon catheter of claim 7, wherein the balloon catheter is configured to move,
the blood discharging holes are arranged in a plurality, and the blood discharging holes and the communication ports are arranged in one-to-one correspondence.
9. The balloon catheter of claim 1, wherein the balloon catheter is configured to be positioned over the patient,
the second pipe body comprises a first section and a second section, and the second section is in a truncated cone shape;
the first section is connected with the second section, and the suction hole is formed in the conical surface of the second section.
10. The balloon catheter of claim 9, wherein the balloon catheter is configured to be positioned over the patient,
the suction holes are formed in a plurality of mode, and the suction holes are uniformly distributed along the circumferential direction of the second section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221971341.XU CN219501842U (en) | 2022-07-28 | 2022-07-28 | Balloon catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221971341.XU CN219501842U (en) | 2022-07-28 | 2022-07-28 | Balloon catheter |
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| Publication Number | Publication Date |
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| CN202221971341.XU Active CN219501842U (en) | 2022-07-28 | 2022-07-28 | Balloon catheter |
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