Coronary balloon catheter expansion assembly

Abstract

The coronary balloon catheter expansion assembly comprises a guide wire and a catheter arranged on the guide wire in a matched and penetrating mode, a balloon is further arranged at the front end of the catheter, the catheter is a coaxial double-inner-diameter pipeline, the balloon is communicated with the pipeline on the outer side of the catheter, and the diameter of the pipeline on the inner side of the catheter is larger than that of the guide wire. The balloon comprises an expansion balloon body and butt joint pipes connected to the front end and the rear end of the expansion balloon body, the butt joint pipes communicate with a pipeline on the outer side of the catheter, a plurality of channels sunken towards the axis are further formed in the surface of the expansion balloon body, and a convex ridge is formed between every two adjacent channels. During treatment, enough time is provided for operating the balloon to slowly open to open the blood vessel, and complications such as thrombus and the like caused by long-time ischemia of an affected part are avoided.

Description

Technical Field

[0001] The present application relates to the technical field of coronary heart disease treatment equipment, and in particular to a coronary balloon catheter dilation assembly. Background Art

[0002] Coronary atherosclerotic heart disease, also known as coronary heart disease, is a heart disease caused by atherosclerotic lesions in the coronary arteries, which causes stenosis or blockage of the blood vessel lumen, resulting in myocardial ischemia, hypoxia or necrosis. Currently, percutaneous transluminal coronary angioplasty (PTCA) is the most common interventional surgical procedure in clinical practice. When doctors perform PTCA, they use a coronary balloon dilatation catheter to be sent to the stenosis of the coronary artery through a peripheral artery (femoral artery or radial artery). The filling balloon can expand the stenotic lumen and improve blood flow. Stents can also be placed in the expanded stenosis to prevent restenosis.

[0003] Among them, the coronary balloon dilatation catheter is a common clinical device for intravascular interventional surgery for coronary artery stenosis caused by coronary atherosclerosis. It can be used in conjunction with guide catheters, guide wires and other instruments to complete the expansion of the coronary artery stenosis segment. When used in combination with stents, it can complete the stent delivery and release operation after the expansion of the coronary artery stenosis segment, increase the inner diameter of the coronary artery, thereby improving myocardial blood supply, relieving symptoms and reducing the occurrence of acute myocardial infarction. Nowadays, almost all intracoronary vascular treatments are based on this method to complete the treatment of coronary artery stenosis caused by coronary atherosclerosis. There are already a variety of coronary balloon dilatation catheters in the prior art for the expansion of the stenotic part of the coronary artery.

[0004] However, in actual application, when the coronary balloon dilatation catheter carries the stent to the site of coronary narrowing or obstruction and expands it, the stent and blood vessels will be stretched, and the stent will be attached to the inner wall of the blood vessel to maintain the postoperative patency of the blood vessel and improve blood flow; however, when the balloon dilatation catheter is opened, it will cause temporary ischemia of the affected blood vessels. Therefore, the doctor needs to shorten the operation time as much as possible when expanding the balloon and placing the stent to avoid long-term ischemia of the affected area causing complications such as thrombosis. If the balloon dilatation catheter opens too quickly, it is also easy to cause accidents that damage the affected blood vessels.

[0005] Therefore, those skilled in the art provide a coronary balloon catheter dilation assembly to solve the problems raised in the above background technology. Utility Model Content

[0006] In order to solve the problem of temporary ischemia of the affected blood vessels when the above-mentioned balloon dilatation catheter is opened, the doctor needs to shorten the operation time as much as possible when dilating the balloon and placing the stent, so as to avoid prolonged ischemia of the affected area causing complications such as thrombosis. The problem of too fast opening of the balloon dilatation catheter is also prone to accidents of damaging the affected blood vessels. The present application provides a coronary balloon catheter dilatation assembly.

[0007] The present application provides a coronary balloon catheter dilation assembly that adopts the following technical solution:

[0008] A coronary balloon catheter dilatation assembly comprises a guide wire and a catheter that cooperates with and is inserted on the guide wire, a balloon is also arranged on the front end of the catheter, the catheter is a coaxial double-inner diameter pipe, the balloon is connected to the pipe on the outside of the catheter, the diameter of the pipe on the inside of the catheter is larger than the diameter of the guide wire, the balloon comprises an expansion bladder body and a butt joint pipe connected to the front and rear ends of the expansion bladder body, the butt joint pipe is connected to the pipe on the outside of the catheter, and the surface of the expansion bladder body is also provided with a plurality of channels that are recessed toward the axis, and a ridge is formed between two adjacent channels.

[0009] Preferably, the width and depth of the channel are both greater than micrometers to ensure the passage of a single red blood cell.

[0010] Preferably, a common annular groove is formed on the plurality of ridges, and a rubber ring is fixedly connected in the annular groove.

[0011] Preferably, the end of the butt joint tube is also sleeved with a fastening ring, and the fastening ring is sleeved on the outer surface of the catheter.

[0012] Preferably, a coronary stent is sheathed on the outer surface of the balloon. The coronary stent is made of cobalt-chromium alloy, and the wall thickness of the coronary stent does not exceed micrometers.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] When in use, the catheter is placed on the guide wire. Under the guidance of the guide wire, the balloon on the catheter can be moved to the location of the thrombus. When the expansion balloon is opened, the multiple concave channels will unfold, thereby facilitating the passage of blood in the blood vessels. During PCTA surgery, the doctor has enough time to operate the balloon to slowly open the blood vessels to prevent the affected area from being ischemic for a long time and causing complications such as thrombosis. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of this application;

[0016] Figure 2 is a schematic diagram of the present application after the guidewire and the catheter are separated;

[0017] Figure 3 is a disassembled diagram of the balloon in this application;

[0018] Figure 4 It is a cross-sectional view of the interior of the balloon in this application.

[0019] Explanation of the reference numerals: 1. catheter; 2. guide wire; 3. balloon; 31. expansion balloon; 32. docking tube; 33. channel; 34. annular groove; 35. rubber ring; 36. fastening ring; 4. coronary stent. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Embodiment 1

[0022] like Figure 1 , 2 As shown in Figures 3 and 4, the present application discloses a coronary balloon catheter dilatation assembly, comprising a guide wire 2 and a catheter 1 that is cooperatively arranged on the guide wire 2, a balloon 3 is also arranged on the front end of the catheter 1, the catheter 1 is a coaxial double inner diameter pipe, the balloon 3 is connected to the pipe outside the catheter 1, the diameter of the pipe inside the catheter 1 is larger than the diameter of the guide wire 2, the developer can pass through the pipe inside the catheter 1 and be released at the location of the affected part of the blood vessel, the balloon 3 comprises an expansion sac 31 and a butt pipe 32 connected to the front and rear ends of the expansion sac 31, the butt pipe 32 is connected to the pipe outside the catheter 1, and the surface of the expansion sac 31 is also provided with a plurality of channels 33 that are concave toward the axis, a ridge is formed between two adjacent channels 33, and the width and depth of the channel 33 are both greater than 7 microns to ensure the passage of a single red blood cell;

[0023] After the catheter 1 is passed through the guide wire 2, the catheter 1 can slide along the guide wire 2 to the affected part of the blood vessel, and then the developing solution can be released to the affected part of the blood vessel through the pipe inside the catheter 1 to facilitate clear angiography and ensure that the balloon 3 can accurately reach the affected part. After that, after the expansion balloon 31 is opened, the coronary stent 4 can be propped up to facilitate the opening of the blood vessel. At the same time, the multiple channels 33 concavely arranged on the expansion balloon 31 can also allow red blood cells to pass through after being opened, so that the doctor has enough time to operate the balloon 3 to slowly open the blood vessel during PCTA surgery to prevent the affected part from being ischemic for a long time and causing complications such as thrombosis.

[0024] like Figure 4 As shown, a coronary stent 4 is sleeved on the outer surface of the balloon 3. The coronary stent 4 is made of cobalt-chromium alloy, and the wall thickness of the coronary stent 4 does not exceed 80 microns. By setting the coronary stent 4, when the balloon 3 is opened, the coronary stent 4 can be opened to facilitate the opening of the affected blood vessels, and the balloon 3 can be pulled out after it shrinks.

[0025] like Figure 3 As shown, a common annular groove 34 is formed on the plurality of ridges, and a rubber ring 35 is bonded in the annular groove 34. The rubber ring 35 can clamp the plurality of ridges on the catheter 1 to facilitate the binding of the ridges.

[0026] like Figure 1 , 2 As shown in FIG. 3 , a fastening ring 36 is sleeved on the end of the butt joint 32 , and the fastening ring 36 is sleeved on the outer surface of the catheter 1 . The balloon 3 can be fixed to the front end of the catheter 1 by the fastening ring 36 .

[0027] The standard parts used in the utility model can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt the conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0028] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0029] The implementation principle of a coronary balloon catheter dilation assembly in the present application embodiment is:

[0030] When in use, first insert the guide wire 2 into the patient's coronary artery, then insert the catheter 1 onto the guide wire 2, and sleeve the coronary stent 4 onto the balloon 3. The catheter 1 can slide along the guide wire 2 to the affected part of the blood vessel, and then the developing solution can be released to the affected part of the blood vessel through the pipe on the inner side of the catheter 1. During angiography, the positions of the catheter 1 and the coronary stent 4 can be more clearly shown, ensuring that the coronary stent 4 is passed into the affected part of the blood vessel. Afterwards, the balloon 3 can be inflated through the pipe on the outer side of the catheter 1. When the expansion balloon 31 is opened, the ridges on the expansion balloon 31 will unfold, and channels 33 will be formed between adjacent ridges. The width and depth of the channels are both greater than 8 microns, which are larger than the diameter of ordinary red blood cells. When the balloon 3 is opened, it can facilitate the passage of blood in the blood vessel, so that the doctor has enough time to operate the balloon 3 to slowly open the blood vessel to open the blood vessel during PCTA surgery, so that the affected part will not be ischemic for a long time and cause complications such as thrombosis.

[0031] In addition, a rubber ring 35 is bonded to the ridges of the expansion bladder 31. When not inflated, the rubber ring 35 will clamp the multiple ridges tightly on the catheter 1, which can prevent the ridges from swinging randomly when the catheter 1 penetrates into the blood vessel. When opening again, due to the elastic effect of the rubber ring 35, it is easy to ensure that the multiple ridges are unfolded synchronously, which is relatively safe and stable.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A coronary balloon catheter dilation assembly, comprising a guide wire (2) and a catheter (1) arranged on the guide wire (2), wherein a balloon (3) is arranged on the front end of the catheter (1), characterized in that: The catheter (1) is a coaxial double-inner-diameter pipe, the balloon (3) is connected to the pipe outside the catheter (1), the diameter of the pipe inside the catheter (1) is larger than the diameter of the guide wire (2), the balloon (3) comprises an expansion sac (31) and a butt joint (32) connected to the front and rear ends of the expansion sac (31), the butt joint (32) is connected to the pipe outside the catheter (1), and the surface of the expansion sac (31) is also provided with a plurality of channels (33) recessed toward the axis, and a ridge is formed between two adjacent channels (33).

2. A coronary balloon catheter dilation assembly according to claim 1, characterized in that: The width and depth of the channel (33) are both greater than 7 micrometers to ensure the passage of a single red blood cell.

3. A coronary balloon catheter dilation assembly according to claim 1, characterized in that: A common annular groove (34) is formed on the plurality of ridges, and a rubber ring (35) is fixedly connected in the annular groove (34).

4. A coronary balloon catheter dilation assembly according to claim 1, characterized in that: The end of the butt joint pipe (32) is also sleeved with a fastening ring (36), and the fastening ring (36) is sleeved on the outer surface of the catheter (1).

5. A coronary balloon catheter dilation assembly according to claim 1, characterized in that: A coronary stent (4) is sleeved on the outer surface of the balloon (3); the coronary stent (4) is made of cobalt-chromium alloy, and the wall thickness of the coronary stent (4) does not exceed 80 micrometers.

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