A multifunctional multi-lumen balloon catheter

Abstract

The present invention relates to a multifunctional multi-lumen balloon catheter, comprising an intravascular auxiliary guide head, a balloon connection catheter body and a terminal operating component; the intravascular auxiliary guide head comprises a front end conical soft head and an L-shaped balloon, the front end conical soft head has a hollow inner cavity, and the end of the front end conical soft head has an opening; the balloon connection catheter body comprises an outer sheath of an outer wall and an internal hose, and the hose has a balloon water injection catheter and a guide wire tube passing through; the internal hose of the balloon connection catheter body is connected to the front end conical soft head, and the guide wire tube in the hose passes through the hollow inner cavity of the front end conical soft head to the end opening of the front end conical soft head; one end of the L-shaped balloon is connected to the balloon water injection catheter in the hose, and the other end is a closed structure, and the L-shaped balloon at the front end of the outer sheath is connected to the hose through a membrane structure. The multifunctional multi-lumen balloon catheter of the present invention can help doctors handle difficult and complex operations in specific scenarios, thereby improving the success rate of surgery and reducing surgery time.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a multifunctional multi-lumen balloon catheter. Background Art

[0002] With the advancement of medical technology, endovascular interventional procedures, characterized by small incisions, minimal trauma, and rapid recovery, have been widely used in the treatment of various clinical diseases. During these procedures, quickly, accurately, and stably delivering interventional consumables such as guidewires, catheters, and stents to their desired locations is crucial for shortening surgical time, reducing complications, and improving surgical success rates. However, in some challenging surgeries, the lack of reliable and effective assistive devices can significantly increase the difficulty of the procedure, even leading to the procedure being impossible to complete and requiring conversion to open surgery. This significantly increases patient trauma, surgical risks, and treatment costs.

[0003] When multiple stents need to be stacked during aortic interventional stent implantation, sometimes, due to aortic morphology and pathological changes, it is necessary to first implant a stent with a bare stent at the front end at the distal descending aorta, and then implant a specific stent at the proximal end. This stent has no outer sheath protection during implantation, so when adjusting the stent position, it is easy for it to interact with the bare stent structure of the previously implanted stent, resulting in the inability to smoothly adjust the position of the second stent, and even the displacement or deformation of the first stent, leading to a series of complications and thus converting to open surgery, which greatly increases the difficulty and risk of the patient's surgery. When patients with abdominal aortic aneurysms undergo branch stent implantation, the guidewire sometimes cannot smoothly enter the main stent, resulting in a significant extension of the operation time and affecting the patient's surgical prognosis. Summary of the Invention

[0004] The purpose of the present invention is to provide a multifunctional multi-lumen balloon catheter, which can reduce the difficulty and risk of surgery and improve the efficiency of surgery.

[0005] To achieve the above object, the technical solution provided by the present invention is:

[0006] A multifunctional multi-lumen balloon catheter, comprising an intravascular auxiliary guide head, a balloon-connected catheter body, and a terminal operating component;

[0007] The intravascular auxiliary guide head includes a front-end conical soft head and an L-shaped balloon. The front-end conical soft head has a hollow inner cavity, and the end of the front-end conical soft head has an opening. The balloon connecting catheter body includes an outer sheath and an inner hose. The hose has a balloon water injection catheter and a guide wire tube passing through it. The balloon connecting catheter body is connected to the L-shaped balloon.

[0008] The outer sheath of the balloon-connected catheter body has a beveled outer sheath front end, which can be connected to the front end conical soft head of the auxiliary guide head in the blood vessel cavity; the internal hose of the balloon-connected catheter body is connected to the front end conical soft head, and the guide wire tube in the hose passes through the hollow inner cavity of the front end conical soft head to the end opening of the front end conical soft head; one end of the L-shaped balloon is connected to the balloon water injection catheter in the hose, and the other end is a closed structure, and the L-shaped balloon at the front end of the outer sheath is connected to the hose via a membrane structure;

[0009] The rear end of the connecting balloon catheter body is connected to the terminal operating component, and the terminal operating component is provided with a guide wire inlet, a balloon injection device and a sheath flushing device. The guide wire inlet is connected to the guide wire tube in the hose, the balloon injection device is connected to the balloon water injection catheter in the hose, and the sheath flushing device is connected to the cavity between the outer sheath of the balloon connecting catheter body and the hose.

[0010] Furthermore, the L-shaped balloon is made of soft material. When the L-shaped balloon is evacuated, its shape becomes wrinkled, and the front end conical soft head and the L-shaped balloon can be retracted into the outer sheath of the balloon connecting catheter body, and the front end of the outer sheath can be connected with the front end conical soft head of the auxiliary guide head in the blood vessel cavity; when the front end conical soft head, the hose and the L-shaped balloon connected to the hose are drawn out from the outer sheath and water is injected into the L-shaped balloon through the balloon water injection catheter, the L-shaped balloon bulges and opens together with the membrane structure to form a fan-shaped structure.

[0011] Furthermore, a guide wire is inserted into the guide wire tube of the front tapered soft head, and the guide wire is used to guide the instrument to advance in the blood vessel cavity.

[0012] Furthermore, the membrane structure enables the L-shaped balloon to form a fan-shaped structure when it is filled with water and opened.

[0013] Furthermore, a hemostatic valve is provided at the end of the outer sheath of the balloon-connected catheter body, and the hemostatic valve can be opened or closed.

[0014] Furthermore, the outer end of the balloon injection device and the outer end of the sheath flushing device are both threaded docking interface structures.

[0015] Furthermore, the multifunctional multi-lumen balloon catheter is used in large vessel stent surgery.

[0016] Furthermore, the multifunctional multi-lumen balloon catheter is used in branch stent implantation surgery for patients with abdominal aortic aneurysm.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The multifunctional multi-lumen balloon catheter of the present invention can help doctors handle difficult and complex operations in specific scenarios, thereby improving the success rate of surgery and reducing operation time. This device can become an effective tool in specific surgical operations such as large vessel stent surgery and branch stent implantation surgery for patients with abdominal aortic aneurysms. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 : Schematic diagram of the structure of a multifunctional multi-lumen balloon catheter.

[0020] Figure 2 : Schematic diagram of the structure of the intravascular auxiliary guide head.

[0021] Figure 3 : Schematic diagram of the structure of the balloon connected to the catheter body.

[0022] Figure 4 : Schematic diagram of the structure of the end operation component.

[0023] In the figure: 1-intravascular auxiliary guide head, 2-balloon connecting catheter body, 3-end operating component, 4-front end tapered soft head, 5-L-shaped balloon, 6-opening, 7-membrane structure, 8-outer sheath, 9-hose, 10-balloon water injection catheter, 11-guidewire tube, 12-guidewire inlet, 13-balloon injection device, 14-sheath flushing device, 15-hemostasis valve. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below with reference to specific examples. The following examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0025] A multifunctional multi-lumen balloon catheter, comprising an intravascular auxiliary guide head 1, a balloon connecting catheter body 2 and a terminal operating component 3;

[0026] The intravascular auxiliary guide head 1 includes a front-end conical soft head 4 and an L-shaped balloon 5. The front-end conical soft head 4 has a hollow inner cavity, and the end of the front-end conical soft head 4 has an opening 6; the balloon connecting catheter body 2 includes an outer sheath 8 and an internal hose 9, and the hose 9 has a balloon water injection catheter 10 and a guide wire tube 11 passing through it. The balloon connecting catheter body 2 is connected to the L-shaped balloon 5;

[0027] The outer sheath 8 of the balloon connecting catheter body 2 has a beveled outer sheath front end, and the outer sheath front end can be connected to the front end conical soft head 4 of the auxiliary guide head 1 in the blood vessel cavity; the internal hose 9 of the balloon connecting catheter body 2 is connected to the front end conical soft head 4, and the guide wire tube 11 in the hose 9 passes through the hollow inner cavity of the front end conical soft head 4 to the end opening 6 of the front end conical soft head 4; one end of the L-shaped balloon 5 is connected to the balloon water injection catheter 10 in the hose 9, and the other end is a closed structure. The L-shaped balloon 5 at the front end of the outer sheath is connected to the hose 9 through a membrane structure 7;

[0028] The rear end of the connecting balloon catheter body is connected to the terminal operating component 3, and the terminal operating component 3 is provided with a guide wire inlet 12, a balloon injection device 13 and a sheath flushing device 14. The guide wire inlet 12 is connected to the guide wire tube 11 in the hose 9, the balloon injection device 13 is connected to the balloon water injection catheter 10 in the hose 9, and the sheath flushing device 14 is connected to the cavity between the outer sheath 8 of the balloon connecting catheter body 2 and the hose 9.

[0029] The L-shaped balloon 5 is made of soft material. When the L-shaped balloon 5 is evacuated, its shape becomes wrinkled. The front end conical soft head 4 and the L-shaped balloon 5 can be retracted into the outer sheath 8 of the balloon connecting catheter body 2, and the front end of the outer sheath 8 can be connected with the front end conical soft head 4 of the auxiliary guide head 1 in the blood vessel cavity; when the front end conical soft head 4 and the hose 9 and the L-shaped balloon 5 connected to the hose 9 are drawn out from the outer sheath 8 and water is injected into the L-shaped balloon 5 through the balloon water injection catheter 10, the L-shaped balloon 5 bulges and opens together with the membrane structure 7 to form a fan-shaped structure.

[0030] A guide wire is inserted into the guide wire tube 11 of the front end conical soft head 4, and the guide wire is used to guide the instrument to advance in the blood vessel cavity.

[0031] The membrane structure 7 enables the L-shaped balloon 5 to form a fan-shaped structure when it is filled with water and opened.

[0032] A hemostatic valve 15 is provided at the end of the outer sheath 8 of the balloon-connected catheter body 2 , and the hemostatic valve 15 can be opened or closed.

[0033] The outer ends of the balloon injection device 13 and the outer ends of the sheath flushing device 14 are both threaded interface structures.

[0034] The method of using the multifunctional multi-lumen balloon catheter of the present invention is as follows:

[0035] 1. Multifunctional multi-lumen balloon catheter is used in large vessel stent surgery:

[0036] When the two large vessel stents are docked, the distal large vessel stent is first released, and then the front end conical soft head 4 and the hose 9 of the multifunctional multi-lumen balloon catheter and the L-shaped balloon 5 connected to the hose 9 are moved forward along the guide wire and separated from the balloon connecting catheter body 2, so that the L-shaped balloon 5 is completely separated from the outer sheath 8, and the proximal bare frame of the distal large vessel stent is located between the balloon L and the aorta wall. At this time, the L-shaped balloon 5 bulges and opens together with the membrane structure 7 to form a fan-shaped structure, so that the bare frame of part of the distal large vessel stent is relatively isolated from the vascular cavity. At this time, another guide wire is inserted from the femoral artery and the proximal large vessel stent is moved upward along the guide wire. The proximal large vessel stent can be closely attached to the inner side of the L-shaped balloon and adjusted up and down in the aorta to a suitable position before being released, thereby avoiding the mutual influence between the proximal large vessel and the bare frame of the distal large vessel stent during the position adjustment process, resulting in the inability to adjust smoothly and the possibility of stent displacement and deformation.

[0037] 2. Multifunctional multi-lumen balloon catheter for branch stent implantation in patients with abdominal aortic aneurysm:

[0038] When patients with abdominal aortic aneurysm undergo branch stent implantation, the guidewire is sometimes unable to enter the main stent smoothly, resulting in a significant extension of the operation time. At this time, a guidewire can be first inserted from the brachial artery, axillary artery, subclavian artery and other parts of the body and descended antegradely into the branch of the abdominal aorta main stent where the branch stent is to be implanted. Then, the multifunctional multi-lumen balloon catheter of the present invention is lowered along the guidewire into the corresponding branch of the main stent. The front end conical soft head 4 and the hose 9 of the multifunctional multi-lumen balloon catheter and the L-shaped balloon 5 connected to the hose 9 are moved forward along the guidewire and separated from the balloon connecting catheter body 2, so that the L-shaped balloon 5 is completely separated from the outer sheath 8. At this time, the L-shaped balloon 5 bulges and opens together with the membrane structure 7 to form a fan-shaped structure, so that the local space in the aneurysm body forms two relatively independent spaces. At this time, a guidewire is again inserted retrogradely upward from the corresponding femoral artery into the branch of the abdominal aorta main stent to be implanted. Because the local space in the aneurysm body is relatively independent and the fan-shaped barrier formed by the balloon is connected to the branch of the main stent to be implanted, the guidewire can more easily enter the branch of the main stent.

[0039] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any simple modification, equivalent replacement and improvement made by any technician familiar with the profession to the above embodiment without departing from the scope of the technical solution of the present invention and based on the technical essence of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A multifunctional multi-lumen balloon catheter, characterized in that: It includes an intravascular auxiliary guide head, a balloon-connected catheter body and a terminal operating component; The intravascular auxiliary guide head comprises a front end conical soft head and an L-shaped balloon, wherein the front end conical soft head has a hollow inner cavity, and the end of the front end conical soft head has an opening; the balloon connecting catheter body comprises an outer sheath of an outer wall and an inner hose, wherein the hose has a balloon water injection catheter and a guide wire tube penetrating therein, and the balloon connecting catheter body is connected to the L-shaped balloon; The outer sheath of the balloon-connected catheter body has a beveled outer sheath front end, and the outer sheath front end can be connected to the front end conical soft head of the auxiliary guide head in the blood vessel cavity; the internal hose of the balloon-connected catheter body is connected to the front end conical soft head, and the guide wire tube in the hose passes through the hollow inner cavity of the front end conical soft head to the end opening of the front end conical soft head; one end of the L-shaped balloon is connected to the balloon water injection catheter in the hose, and the other end is a closed structure, and the L-shaped balloon at the front end of the outer sheath is connected to the hose through a membrane structure; The rear end of the balloon-connected catheter body is connected to a terminal operating component, and the terminal operating component is provided with a guidewire inlet, a balloon injection device and a sheath flushing device. The guidewire inlet is connected to the guidewire tube in the hose, the balloon injection device is connected to the balloon water injection catheter in the hose, and the sheath flushing device is connected to the cavity between the outer sheath of the balloon-connected catheter body and the hose; the L-shaped balloon is made of soft material, and when the L-shaped balloon is evacuated, its shape becomes wrinkled, and the front end conical soft head and the L-shaped balloon can be collected into the outer sheath of the balloon-connected catheter body, and the front end of the outer sheath can be connected with the front end conical soft head of the auxiliary guide head in the blood vessel cavity; when the front end conical soft head, the hose and the L-shaped balloon connected to the hose are drawn out of the outer sheath, and water is injected into the L-shaped balloon through the balloon water injection catheter, the L-shaped balloon bulges and opens together with the membrane structure to form a fan-shaped structure; A hemostatic valve is arranged at the end of the outer sheath of the balloon-connected catheter body, and the hemostatic valve can be opened or closed.

2. The multifunctional multi-lumen balloon catheter according to claim 1, characterized in that: A guide wire is inserted into the guide wire tube of the front conical soft head, and the guide wire is used to guide the instrument to move forward in the blood vessel cavity.

3. The multifunctional multi-lumen balloon catheter according to claim 1, characterized in that: The membrane structure enables the L-shaped balloon to form a fan-shaped structure when it is filled with water and opened.

4. The multifunctional multi-lumen balloon catheter according to claim 1, characterized in that: The outer end of the balloon injection device and the outer end of the sheath flushing device are both threaded docking interface structures.

5. The multifunctional multi-lumen balloon catheter according to claim 1, characterized in that: The multifunctional multi-lumen balloon catheter is used in large blood vessel stent surgery.

6. The multifunctional multi-lumen balloon catheter according to claim 1, characterized in that: The multifunctional multi-lumen balloon catheter is used in branch stent implantation surgery for patients with abdominal aortic aneurysm.

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