Balloon dilatation catheter

Abstract

The utility model relates to the technical field of medical instruments, in particular to a balloon dilatation catheter which is characterized in that a guide wire cavity is fixedly installed in the middle of the interior of the catheter, a balloon is fixedly installed on the outer wall of the left side of the catheter, a plurality of blood circulation grooves are fixedly installed on the surface of the balloon, a plurality of through grooves are fixedly installed in the balloon, and the through grooves are communicated with the guide wire cavity. The two blood passing cavities are fixedly installed in the outer wall of the catheter, and the interference passing cavity is fixedly installed in the outer wall of the catheter. Due to the fact that the two blood circulation cavities for blood circulation are formed in the catheter body and the blood circulation grooves and the penetrating grooves which are distributed in the cross shape are formed in the balloon, blood circulation can be kept, and therefore blood flow cannot be blocked after the balloon is expanded; the problem that balloon dilatation cannot be kept for a long time due to the fact that aorta blood flow is blocked after balloon dilatation is solved, the balloon dilatation time is prolonged, the treatment effect is improved, and meanwhile the adverse effect on a patient caused by blood flow blocking is avoided.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a balloon dilation catheter. Background Technology

[0002] A biliary balloon dilation catheter is a device used to treat biliary tract lesions such as biliary strictures and stones. It consists of a balloon and a catheter, which is inserted into the patient's bile duct via percutaneous or endoscopic means. After reaching the lesion site, the doctor inflates and dilates the balloon to widen the narrowed bile duct or break up the gallstones, and then removes the fragments through the catheter. The biliary balloon dilation catheter can be used to treat a variety of biliary tract diseases.

[0003] Existing balloon dilation catheters, when used to treat lesions, can cause significant pressure differences between the aorta and left ventricle due to the obstruction of blood flow caused by balloon dilation, limiting the operable space for the procedure and potentially leading to myocardial damage. Therefore, we propose a new balloon dilation catheter to address these issues. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of the prior art by proposing a balloon dilation catheter.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a balloon dilation catheter, comprising: a catheter, a guidewire lumen, a balloon, a blood flow groove, a through groove, a blood flow channel, a filling channel, and a connecting port. The guidewire lumen is fixedly installed in the middle of the catheter interior. The balloon is fixedly installed on the outer wall of the left side of the catheter. Multiple blood flow grooves are fixedly installed on the surface of the balloon. Multiple through grooves are fixedly installed inside the balloon. Two blood flow channels are fixedly installed inside the outer wall of the catheter. A filling channel is fixedly installed inside the outer wall of the catheter, with one end of the filling channel penetrating the inside of the balloon and the other end of the filling channel penetrating the outside of the catheter. A connecting port is fixedly connected to the other end of the filling channel.

[0006] Furthermore, there are four blood circulation channels, and the four blood circulation channels are arranged in a cross-shaped structure.

[0007] Furthermore, the two ends of the through groove respectively penetrate the outside of the balloon, and there are four through grooves, which are arranged in a symmetrical structure in pairs.

[0008] Furthermore, the two blood access cavities are arranged symmetrically, and the two ends of the two blood access cavities respectively penetrate the outside of the catheter.

[0009] Compared with the prior art, this utility model has the following advantages:

[0010] By setting two blood-permeable cavities on the catheter and setting blood-permeable grooves and through grooves in a cross shape on the balloon, blood flow can be maintained. This ensures that the balloon does not block blood flow after expansion, thus overcoming the problem that the balloon cannot maintain expansion for a long time due to aortic blood flow obstruction after expansion. This prolongs the balloon expansion time, improves the treatment effect, and avoids the adverse effects on the patient caused by blood flow obstruction. Attached Figure Description

[0011] Figure 1 This is a front view of the entire utility model;

[0012] Figure 2 This is a top sectional view of the overall structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the overall front sectional view of this utility model;

[0014] Figure 4 It is the whole of this utility model Figure 1 Enlarged structural diagram at point A in the diagram;

[0015] Figure 5 It is the whole of this utility model Figure 2 Enlarged structural diagram at point B in the diagram;

[0016] Figure 6 It is the whole of this utility model Figure 3 Enlarged structural diagram at point C;

[0017] Figure 7 It is the whole of this utility model Figure 1 A schematic diagram of the right sectional view of the balloon in the middle.

[0018] In the diagram: 1. Catheter; 2. Guidewire lumen; 3. Balloon; 4. Penetration groove; 5. Blood passage; 6. Blood passage channel; 7. Filling channel; 8. Connection port. Detailed Implementation

[0019] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0020] like Figure 1-7The balloon dilation catheter shown includes: a catheter 1, a guidewire lumen 2, a balloon 3, a blood flow groove 4, a through groove 5, a blood flow channel 6, a filling channel 7, and a connecting port 8. The guidewire lumen 2 is fixedly installed in the middle of the catheter 1. The balloon 3 is fixedly installed on the outer left side of the catheter 1. Multiple blood flow grooves 4 are fixedly installed on the surface of the balloon 3. Multiple through grooves 5 are fixedly installed inside the balloon 3. Two blood flow channels 6 are fixedly installed inside the outer wall of the catheter 1. A filling channel 7 is fixedly installed inside the outer wall of the catheter 1. One end of the filling channel 7 penetrates the inside of the balloon 3, and the other end of the filling channel 7 penetrates the outside of the catheter 1. The other end of the filling channel 7 is fixedly connected to the connecting port 8.

[0021] In this embodiment, four blood passage grooves 4 are provided, and the four blood passage grooves 4 are arranged in a cross-shaped structure.

[0022] In practical use, when balloon 3 dilates the narrow part of the blood vessel, blood can flow into the blood flow channel 4 through the blood flow channel 4 and then flow out from the tail end of the blood flow channel 4, thus maintaining blood flow. This ensures that the balloon does not block blood flow after dilation, overcoming the problem that balloon dilation cannot be maintained for a long time due to aortic blood flow obstruction after dilation. This prolongs the balloon dilation time, improves the treatment effect, and avoids the adverse effects on the patient caused by blood flow obstruction.

[0023] In this embodiment, the two ends of the through groove 5 penetrate the outside of the balloon 3 respectively, and there are four through grooves 5, which are arranged in a symmetrical structure in pairs.

[0024] In practical use, the through groove 5 allows blood inside the blood vessel to flow into the through groove 5 and out from the tail end of the through groove 5, thereby maintaining blood flow.

[0025] In this embodiment, the two blood access channels 6 are arranged in a symmetrical structure, and the two ends of the two blood access channels 6 penetrate the outside of the catheter 1 respectively.

[0026] In practical use, the blood can flow into the blood canal 6 through the blood passage 6 and flow out from the tail end of the blood canal 6, thereby maintaining blood flow.

[0027] The working principle of a balloon dilation catheter mentioned in this utility model is as follows:

[0028] When in use, fluid can be introduced into the cavity 7 through the connection port 8, and the fluid can flow into the balloon 3 until the balloon 3 is filled. After the inner lumen is filled, the balloon 2 expands outward along the radial direction of the catheter 1 to a fully filled state, thereby dilating the narrow part of the blood vessel.

[0029] Simultaneously, when balloon 3 dilates the narrowed portion of the blood vessel, blood flows into and out of the blood flow channel 4 on balloon 3, maintaining blood flow. Similarly, blood flows into and out of the perforation channel 5 on balloon 3, maintaining blood flow. Then, blood flows into and out of the blood flow channel 6, again maintaining blood flow. This ensures that the balloon does not block blood flow after dilation, overcoming the problem of balloon dilation obstructing aortic blood flow and preventing prolonged balloon dilation. This prolongs the balloon dilation time, improves treatment efficacy, and avoids the adverse effects on the patient caused by blood flow obstruction.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A balloon dilation catheter, comprising: The catheter (1), guidewire lumen (2), balloon (3), blood passage groove (4), through groove (5), blood passage channel (6), filling channel (7), and connection port (8) are characterized in that: a guidewire lumen (2) is fixedly installed in the middle of the catheter (1), a balloon (3) is fixedly installed on the left outer wall of the catheter (1), a plurality of blood passage grooves (4) are fixedly installed on the surface of the balloon (3), a plurality of through grooves (5) are fixedly installed inside the balloon (3), two blood passage channels (6) are fixedly installed inside the outer wall of the catheter (1), a filling channel (7) is fixedly installed inside the outer wall of the catheter (1), and one end of the filling channel (7) penetrates the inside of the balloon (3), and the other end of the filling channel (7) penetrates the outside of the catheter (1), and the other end of the filling channel (7) is fixedly connected to a connection port (8).

2. The balloon dilation catheter according to claim 1, characterized in that: There are four blood circulation channels (4), and the four blood circulation channels (4) are arranged in a cross shape.

3. The balloon dilation catheter according to claim 1, characterized in that: The two ends of the through groove (5) penetrate the outside of the balloon (3) respectively, and there are four through grooves (5), and the four through grooves (5) are arranged in a symmetrical structure in pairs.

4. The balloon dilation catheter according to claim 1, characterized in that: The two blood passages (6) are arranged in a symmetrical structure, and the two ends of the two blood passages (6) penetrate the outside of the catheter (1) respectively.

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