Intra-aortic balloon catheter with thrombus prevention function

Abstract

The invention provides an in-aorta balloon catheter with a thrombus prevention function, and belongs to the technical field of aorta balloon counterpulsation. Comprising an expandable balloon, a first outer catheter is arranged in the center of the interior of the balloon, a thrombus filtering part is arranged at the end, away from the balloon, of the first outer catheter, a third outer catheter is arranged at the other end of the thrombus filtering part, and a connecting part which is arranged outside a body and used for allowing the balloon to be shrunken and inflated and allowing a guide wire to penetrate is arranged on the other side of the third outer catheter. By opening the thrombus filtering part and the filtering umbrella net, small thrombus fragments which are crushed and fall off by the balloon can be filtered and collected in the filtering umbrella net, so that the thrombus fragments are effectively prevented from flowing along with blood, and the small thrombus fragments which are accumulated between the closed filtering umbrella net and the outer catheter II are moved out of a human body along with the outer catheter I and the thrombus filtering part; the fallen small-fragment thrombus can be well removed from the human body, the risk that the small-fragment thrombus flows to the minimum end of a blood vessel along with blood flow to cause embolism is effectively reduced, and the using effect is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application provides an aortic balloon catheter with thrombus prevention function, belonging to the technical field of aortic balloon counterpulsation. BACKGROUND

[0002] Aortic balloon counterpulsation (IABP) is an interventional treatment technology for improving cardiac hemodynamics through mechanical assistance, mainly used for acute heart failure, cardiogenic shock, high-risk cardiac surgery perioperative period and other critical conditions. Its principle is to increase coronary blood flow through the inflation balloon in diastole, and to reduce the afterload of the heart in systole, thereby improving cardiac output and helping the patient to pass through the dangerous period.

[0003] The existing aortic balloon catheter used in aortic balloon counterpulsation can basically meet the normal use needs, but still has certain defects: the traditional balloon catheter only achieves hemostasis by physically blocking blood flow, lacks active thrombus prevention mechanism, and the inflated balloon exists the risk of crushing the thrombus on the blood vessel wall when it is inflated and expanded against the blood vessel wall. The small broken thrombus often continues to flow with the blood, which has the risk of causing embolism when it flows to the smallest end of the blood vessel. Based on this, the present application provides an aortic balloon catheter with thrombus prevention function. SUMMARY

[0004] The technical problem solved by the present application is the lack of active thrombus prevention mechanism, and the small broken thrombus crushed by the balloon often continues to flow with the blood, which has the risk of causing embolism when it flows to the smallest end of the blood vessel.

[0005] In order to solve the technical problem, the technical solution provided by the present application is an aortic balloon catheter with thrombus prevention function, comprising an inflatable balloon, an outer catheter one is arranged in the center of the balloon, a thrombus filtration part is arranged at one end of the outer catheter one away from the balloon, an outer catheter three is arranged at the other end of the thrombus filtration part, a connecting part is arranged on the other side of the outer catheter three for the balloon to deflate and inflate and for the guide wire to pass through, the thrombus filtration part comprises an outer catheter two in communication with the outer catheter one and the outer catheter three, a support ring is arranged on the outer wall of the outer catheter two, an expandable filter umbrella is arranged on the support ring for capturing the detached thrombus, a plurality of gas holes two are arranged on the circumference of the outer catheter two away from the support ring, the ports of the gas holes two are in communication with a support gas column, and a support gas ring is arranged between the other ends of the support gas column and placed inside the filter umbrella.

[0006] Further, a through hole is arranged in the balloon and matched with the outer catheter one, and a plurality of gas holes one are arranged on the surface of the outer catheter one and in communication with the balloon.

[0007] Further, the outer catheter one, the outer catheter three and the outer catheter two jointly form a gas charging and discharging pipeline, and the outer catheter one, the outer catheter three and the outer catheter two are internally provided with an inner guide wire tube.

[0008] Further, the outer catheter one is closed at the end far from the outer catheter three, and the balloon end head is provided with a hollow tip arranged at the end of the outer catheter one and penetrating the inner guide wire tube.

[0009] Further, the connecting part comprises a Y-shaped joint mounted at the other end of the outer catheter three and connected in communication, one side interface of the Y-shaped joint is provided with the extracorporeal tube one connected in communication with the outer catheter three, the end head of the extracorporeal tube one is provided with an electromagnetic valve, the electromagnetic valve is used for controlling the extracorporeal tube one to be connected in communication with the positive pressure tank or the negative pressure tank, and is used for sucking and shrinking the balloon or inflating and expanding the balloon, the other side interface of the Y-shaped joint is provided with a guide wire inlet connected in communication with the inner guide wire tube, and the guide wire is used for being passed into the inner guide wire tube from the Y-shaped joint through the guide wire inlet.

[0010] Further, the outer catheter one and the outer catheter two are of the same size, the diameter of the outer catheter two is slightly smaller than that of the outer catheter one, and the outer catheter one and the outer catheter two and the outer catheter two and the outer catheter three are all provided with variable diameter joints connected in communication.

[0011] Further, the outer catheter one, the outer catheter three and the outer catheter two are all made of high molecular polyurethane material, so as to have excellent biocompatibility and antithrombotic performance, so as to reduce platelet adhesion, and the balloon is externally provided with a protective film, so as to block direct contact of blood, and reduce the risk of thrombosis.

[0012] Further, the filtering umbrella net is made of memory alloy with an initial shape in a closed state, so as to keep the filtering umbrella net in a closed state on the outer surface of the outer catheter two when the supporting air ring is in a deflated state.

[0013] The present application has the following beneficial effects: through the thrombus filtering part, the supporting air column and the supporting air ring inflated and expanded open the filtering umbrella net, can filter and collect the small broken block thrombus crushed and fallen by the balloon in the filtering umbrella net, effectively prevent the thrombus broken block from flowing with the blood, when the filtering umbrella net returns to the initial closed state, can accumulate the small broken block thrombus in the space between the filtering umbrella net and the outer catheter two, remove the outer catheter one and the thrombus filtering part from the human body, has good thrombus prevention function, can well remove the small broken block thrombus from the human body, effectively reduces the risk of embolism caused by the small broken block thrombus flowing to the smallest end of the blood vessel with the blood stream, and greatly improves the use effect. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the overall plane schematic diagram of the present application.

[0015] Figure 2Partial plan view of the present invention Figure 1 .

[0016] Figure 3 Partial plan view of the present invention Figure 2 .

[0017] Figure 4 Partial plan view of the present invention Figure 3 .

[0018] Figure 5 Partial plan view of the present invention Figure 4 .

[0019] 1, balloon; 2, outer catheter one; 3, thrombus filter part; 4, outer catheter three; 5, connecting part; 6, inner guide wire tube; 7, hollow tip; 8, reducing joint; 20, air hole one; 30, outer catheter two; 31, support ring; 32, filter umbrella net; 33, air hole two; 34, support air column; 35, support air ring; 50, Y-shaped joint; 51, extracorporeal tube one; 52, electromagnetic valve; 53, guide wire inlet. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings.

[0021] According to the accompanying Figure 1 , 3, 4, 5: the present application provides an aortic balloon catheter with thrombus prevention function, including the balloon 1 can expand, balloon 1 inside center is equipped with outer catheter 2, balloon 1 is equipped with through hole matched with outer catheter 2, outer catheter 2 is equipped with a plurality of air holes 20 communicated with balloon 1 on the surface of the tube, outer catheter 2 is equipped with thrombus filter part 3 away from balloon 1, outer catheter three 4 is equipped with connecting part 5 placed outside the body for balloon 1 to be deflated and inflated and for the guide wire to be inserted, thrombus filter part 3 includes outer catheter two 30 communicated with outer catheter 2 and outer catheter three 4, outer catheter two 30 is equipped with support ring 31 on the outer wall, support ring 31 is equipped with deployable filter umbrella net 32 for capturing the thrombus, outer catheter two 30 is equipped with air holes two 33 in cross distribution on the circumference of the tube away from support ring 31, air holes two 33 is equipped with support air column 34 communicated, support air column 34 is equipped with support air ring 35 communicated and placed inside filter umbrella net 32 between the other end, filter umbrella net 32 uses memory alloy with initial shape in closed state, to keep filter umbrella net 32 in closed shrinkage on the outer surface of outer catheter two 30 when support air ring 35 is in deflated condition, specifically, through air hole 20, balloon 1 is inflated and expanded, through air hole two 33, support air column 34 and support air ring 35 can be inflated and expanded, and then inflated and expanded support air column 34 and support air ring 35 open filter umbrella net 32, the opened filter umbrella net 32 can filter and collect small pieces of thrombus crushed and dropped by balloon 1 in filter umbrella net 32, effectively prevent thrombus fragments from flowing with blood.

[0022] As described in the specification Figure 1 、 2, 3: the other end of the thrombus filter part 3 is provided with an outer catheter three 4, the outer catheter one 2, the outer catheter three 4, the outer catheter two 30 jointly form a gas charging and discharging pipeline, an inner guide wire tube 6 is arranged in the outer catheter one 2, the outer catheter three 4, the outer catheter two 30, the end of the outer catheter one 2 away from the outer catheter three 4 is closed, the balloon 1 end head is provided with a hollow sharp end 7 arranged in the outer catheter one 2 and penetrating the inner guide wire tube 6, the connecting part 5 includes a Y-shaped joint 50 arranged in the other end of the outer catheter three 4, the side interface of the Y-shaped joint 50 is provided with an extracorporeal tube one 51 connected with the outer catheter three 4, the end of the extracorporeal tube one 51 is provided with an electromagnetic valve 52, the electromagnetic valve 52 is used for controlling the extracorporeal tube one 51 to be connected with a positive pressure tank or a negative pressure tank, and is used for sucking the balloon 1 to shrink and expand, the other side interface of the Y-shaped joint 50 is provided with a guide wire inlet 53 connected with the inner guide wire tube 6, and the guide wire inlet 53 is used for guiding the guide wire to pass into the inner guide wire tube 6 from the Y-shaped joint 50, specifically, the guide wire of a suitable size is guided to pass into the inner guide wire tube 6 from the Y-shaped joint 50, and finally passes out of the hollow sharp end 7, the guide wire needs to move along the blood flow direction, when the electromagnetic valve 52 controls the negative pressure tank to be connected with the extracorporeal tube one 51, the negative pressure tank sucks the balloon 1 through the outer catheter three 4, the outer catheter two 30, the outer catheter one 2 and the air hole one 20, when the electromagnetic valve 52 controls the positive pressure tank to be connected with the extracorporeal tube one 51, the positive pressure tank sends gas to expand the balloon through the outer catheter three 4, the outer catheter two 30, the outer catheter one 2 and the air hole one 20, and can be used for blocking the aortic blood flow.

[0023] As shown in the description accompanying drawings Figure 3 : the outer catheter one 2, the outer catheter three 4 and the outer catheter two 30 are made of high molecular polyurethane material, which is used for having excellent biocompatibility and antithrombotic performance, so as to reduce platelet adhesion, the balloon 1 is externally provided with a protective film, which is used for blocking direct contact of blood, reducing the risk of thrombosis, the specifications and sizes of the outer catheter one 2 and the outer catheter two 30 are the same, the diameter of the outer catheter two 30 is slightly smaller than that of the outer catheter one 2, which is used for making the maximum diameter of the filtering umbrella net 32 in the closed state slightly smaller than the diameter of the outer catheter two 30, so as to prevent damage to the aorta, the variable diameter joints 8 are arranged in communication between the outer catheter one 2 and the outer catheter two 30 and between the outer catheter two 30 and the outer catheter three 4, which are used for connecting the outer catheter one 2, the outer catheter two 30 and the outer catheter two 30.

[0024] Working principle:

[0025] When in use, under the action of the outer catheter 2, the outer catheter 3 4 and the outer catheter 2 30, the balloon 1 is inflated through the air hole 1 20, the support air column 34 and the support air ring 35 can be inflated through the air hole 2 33, and then the inflated support air column 34 and the support air ring 35 open the filter umbrella net 32, the opened filter umbrella net 32 can filter and collect the small broken block thrombus crushed by the balloon 1 in the filter umbrella net 32, effectively preventing the thrombus block from flowing with the blood, when the air hole 1 20 deflates the balloon 1, the support air column 34 and the support air ring 35 are deflated through the air hole 2 33, the filter umbrella net 32 returns to the initial closed state, and then the small broken block thrombus is accumulated in the space between the filter umbrella net 32 and the outer catheter 2 30, the outer catheter 1 2 and the thrombus filter part 3 are removed from the human body, having good thrombus prevention function, and being able to remove the small broken block thrombus from the human body, effectively reducing the risk of embolism caused by the small broken block thrombus flowing to the smallest end of the blood vessel with the blood stream, and greatly improving the use effect.

[0026] The above describes the present application and its embodiments, which is not limited, and the drawings only show one of the embodiments of the present application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired, without departing from the purpose of the present application, without creative design, similar structure and embodiments of the technical solution can be designed, which should belong to the protection scope of the present application.

Claims

1. An intra-aortic balloon catheter with thrombosis prevention function, comprising an expandable balloon (1), characterized in that: An outer catheter 1 (2) is provided in the center of the balloon (1), and a thrombus filtering part (3) is provided at one end of the outer catheter 1 (2) away from the balloon (1), and an outer catheter 3 (4) is provided at the other end of the thrombus filtering part (3). The other side of the outer catheter 3 (4) is provided with a connecting part (5) placed outside the body for the balloon (1) to be deflated and inflated and for the guide wire to be inserted. The thrombus filtering part (3) includes an outer catheter 2 (30) connected to the outer catheter 1 (2) and the outer catheter 3 (4). (30) A support ring (31) is provided on the outer wall, and an expandable filter umbrella net (32) is provided on the support ring (31) for capturing detached thrombus. The outer catheter (30) is provided with a cross-distributed air hole (33) on the circumference of the tube body on the side away from the support ring (31). The port of the air hole (33) is provided with a connected support air column (34). The other end of the support air column (34) is provided with a connected support air ring (35) placed on the inner side of the filter umbrella net (32).

2. The intra-aortic balloon catheter with thrombosis prevention function according to claim 1, characterized in that: The balloon (1) is provided with a through hole that matches the outer catheter (2), and the outer catheter (2) is provided with a plurality of air holes (20) that are connected to the balloon (1) on the surface of the tube body.

3. The intra-aortic balloon catheter with thrombosis prevention function according to claim 1, characterized in that: The outer conduit 1 (2), the outer conduit 3 (4), and the outer conduit 2 (30) jointly form an air charging and discharging pipeline, and an inner wire guide tube (6) is provided inside the outer conduit 1 (2), the outer conduit 3 (4), and the outer conduit 2 (30).

4. The intra-aortic balloon catheter with thrombosis prevention function according to claim 3, characterized in that: The end of the outer catheter one (2) away from the outer catheter three (4) is closed, and the end of the balloon (1) is provided with a hollow tip (7) placed at one end of the outer catheter one (2) and connected with the inner guide wire tube (6).

5. The intra-aortic balloon catheter with thrombosis prevention function according to claim 3, characterized in that: The connecting portion (5) includes a Y-shaped connector (50) installed at the other end of the outer catheter three (4) and connected thereto. An extracorporeal tube one (51) connected to the outer catheter three (4) is provided at one side interface of the Y-shaped connector (50). An end of the extracorporeal tube one (51) is provided with an electromagnetic valve (52). The electromagnetic valve (52) is used to control the extracorporeal tube one (51) to be connected to the positive pressure tank or the negative pressure tank, and is used to deflate and inflate the balloon (1). The other side interface of the Y-shaped connector (50) is provided with a guide wire inlet (53) connected to the inner guide wire tube (6), and is used to pass the guide wire from the Y-shaped connector (50) into the inner guide wire tube (6) through the guide wire inlet (53).

6. The intra-aortic balloon catheter with thrombosis prevention function according to claim 1, characterized in that: The outer conduit 1 (2) and the outer conduit 2 (30) have the same specifications and sizes. The diameter of the outer conduit 2 (30) is slightly smaller than the diameter of the outer conduit 1 (2). A connecting reducing joint (8) is provided between the outer conduit 1 (2) and the outer conduit 2 (30), and between the outer conduit 2 (30) and the outer conduit 3 (4).

7. The intra-aortic balloon catheter with thrombosis prevention function according to claim 1, characterized in that: The outer catheter 1 (2), outer catheter 3 (4), and outer catheter 2 (30) are all made of high-molecular polyurethane material to have excellent biocompatibility and anti-thrombotic properties to reduce platelet adhesion. The outer surface of the balloon (1) is provided with a protective film to block direct contact with blood and reduce the risk of thrombosis.

8. The intra-aortic balloon catheter with thrombosis prevention function according to claim 1, characterized in that: The filter umbrella net (32) is made of a memory alloy with an initial closed shape, so as to keep the filter umbrella net (32) in a closed state and contracted on the outer surface of the second outer conduit (30) when the support air ring (35) is in a deflated state.

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