Double-guide-wire balloon device

Abstract

The utility model belongs to the field of medical surgical instruments, and discloses a double-guide-wire balloon device which comprises a push rod, a pressurization port installed at one end of the push rod and a hose connected to the other end of the push rod, the end, away from the push rod, of the hose is connected with a balloon, and a first inner tube and a second inner tube are arranged in the balloon; openings are formed in the two ends of the first inner tube and the second inner tube, the openings in one ends of the first inner tube and the second inner tube are formed in the end face, away from the hose, of the balloon, and the openings in the other ends of the first inner tube and the second inner tube are formed in the hose; the projections of two intersection points formed by the center lines of the first inner tube and the second inner tube and the end face, far away from the hose, of the balloon on the maximum section circle of the balloon are located on the diameter of the maximum section circle; the first guide wire and the second guide wire penetrate through the first inner tube and the second inner tube respectively to form a double-guide-wire conveying track to guide the balloon to move. The device is small in damage to blood vessels and good in trafficability.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of medical operation instrument especially relates to a double guide wire balloon device for vascular interventional therapy. BACKGROUND

[0002] Among the existing medical means for vascular stenosis lesions, vascular interventional therapy is a very important treatment method. Compared with the surgical method, interventional therapy has the advantages of small incision, rapid postoperative recovery, fewer complications, wide indications, and rapid operation. The balloon device on the market is generally a single-track balloon. In interventional therapy, the balloon is transported to the calcified plaque and fibrotic lesion site in the blood vessel through a guide wire, and the balloon is used to dilate the lesion site. However, the single-guide-wire balloon in the above-mentioned technology can cause damage to the blood vessel wall during clinical operation, and has poor transport capacity and poor passing performance in a narrow and tortuous channel, which requires high operating skills of the operator.

[0003] In the prior art, patent CN 221579384 U discloses a double-guide-wire balloon device, which sets a short-distance traction guide wire at the front end of the guide wire balloon to traction the push rod and the balloon body arranged on the push rod, facilitating the rapid threading of the balloon device and improving the operation speed, but the double-guide-wire balloon device is essentially a single-track transport and does not fundamentally solve the problems of damage to the blood vessel and poor passing performance during balloon transport.

[0004] Patent CN 210250850 U discloses a double-guide-wire balloon dilatation catheter, which has a push guide wire welded at the tip of the balloon in addition to the guide wire, and the combination of the push guide wire and the guide wire is used to extrude and rotary cut the lesion to dredge the lesion, thereby improving the dredging capacity of the guide wire compared with the traditional single-guide-wire balloon device, but the device can still cause damage to the blood vessel intima when dredging and dilating the blood vessel, and the overall system has poor passing performance. UTILITY MODEL CONTENTS

[0005] The utility model overcomes the deficiencies and defects mentioned in the above background technology and provides a double-guide-wire balloon device with small damage to the blood vessel and good balloon passing performance.

[0006] To solve the above technical problems, the technical scheme provided by the utility model is as follows:

[0007] A double-guide-wire balloon device, comprising a push rod, a pressurizing port mounted at one end of the push rod, and a hose connected to the other end of the push rod, wherein the hose is connected with a balloon at the end away from the push rod, and the balloon is provided with a first inner tube and a second inner tube.

[0008] The first inner tube and the second inner tube are both provided with openings at both ends, wherein the openings at one end of the first inner tube and the second inner tube are arranged on the end face of the balloon away from the hose, and the openings at the other end are arranged on the hose; and the projections of the two intersection points of the center lines of the first inner tube and the second inner tube and the end face of the balloon away from the hose on the maximum cross-sectional circle of the balloon are located on the diameter of the maximum cross-sectional circle.

[0009] The first guide wire and the second guide wire pass through the first inner tube and the second inner tube respectively and form a double-guide-wire conveying track to guide the movement of the balloon.

[0010] Preferably, the distance between the two intersection points of the center lines of the first inner tube and the second inner tube and the end face of the balloon away from the hose is not less than 1 / 4 of the diameter of the balloon.

[0011] Preferably, the two intersection points of the center lines of the first inner tube and the second inner tube and the end face of the balloon away from the hose are symmetrical based on the central axis of the balloon.

[0012] Preferably, the material of the balloon is selected from one of polyethylene, polyethylene terephthalate, polyurethane, polyamide or polyether block polyamide.

[0013] Preferably, the pressurized medium conveyed by the pressurized port is contrast medium, which is used to pressurize the balloon to make it expand, and at the same time, the position of the balloon in the blood vessel is determined through the contrast medium.

[0014] Preferably, it further comprises a developing ring, which is located in the balloon and is sleeved on the first inner tube and the second inner tube.

[0015] Preferably, the expanded diameter of the balloon is 0.75-5mm, and the length of the balloon after expansion is 6-30mm.

[0016] Preferably, the outer surface of the balloon has a convex structure.

[0017] Preferably, the outer surface of the balloon is provided with a blade along the extension direction of the balloon for cutting the lesion site.

[0018] Preferably, the outer surface of the balloon is covered with a drug coating for drug treatment of the lesion site.

[0019] Compared with the prior art, the beneficial effects of the utility model are that: in the prior art, the traditional single guide wire balloon is prone to position deviation in the blood vessel during actual operation, so the balloon conveying process may contact the inner wall of the blood vessel, causing damage to the blood vessel, and the single guide wire balloon device has poor passability when facing narrow and curved blood vessel passages. The double guide wire balloon device provided in the application sets the first inner tube and the second inner tube, the first guide wire and the second guide wire pass through the first inner tube and the second inner tube respectively and form a double guide wire conveying track, and the balloon is guided to move, since the double guide wire conveying track limits the moving path of the balloon within a certain range, the balloon is not prone to deviation when moving, the passability of the balloon is greatly improved, and the damage to the blood vessel during the balloon conveying process is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0021] Figure 1 It is a structure schematic view of the double guide wire balloon device of an embodiment;

[0022] Figure 2 It is a top view of the double guide wire balloon device of an embodiment;

[0023] Figure 3 It is a top view of the double guide wire balloon device of another embodiment;

[0024] Figure 4 It is a top view of the double guide wire balloon device of another embodiment.

[0025] The drawings show that: 1, pressurized port; 2, push rod; 3, hose; 4, first inner tube; 5, second inner tube; 6, balloon; 7, first guide wire; 8, second guide wire; 9, developing ring. DETAILED DESCRIPTION

[0026] In order to facilitate understanding of the present application, the following will combine the drawings and the preferred embodiments to make more comprehensive and detailed description of the present application, but the protection scope of the present application is not limited to the following specific embodiments.

[0027] Unless otherwise defined, all professional terms used in the following have the same meaning as understood by those skilled in the art. The professional terms used in the present application are only for the purpose of describing specific embodiments, and are not intended to limit the protection scope of the present application.

[0028] Unless otherwise specifically indicated, various materials, reagents, instruments and equipment used in the present application can be purchased in the market or can be prepared by existing methods.

[0029] Please participate Figures 1-4 The double-guide-wire balloon device of one embodiment of the present application comprises a push rod 2, a pressurized port 1 mounted at one end of the push rod 2, and a hose 3 connected to the other end of the push rod 2, the hose 3 is connected with a balloon 6 at the end away from the push rod, the balloon 6 is provided with a first inner tube 4 and a second inner tube 5; the first inner tube 4 and the second inner tube 5 are both provided with openings at both ends, wherein the openings at one end of the first inner tube 4 and the second inner tube 5 are both arranged on the end face of the balloon 6 away from the hose 3, and the openings at the other end are both arranged on the hose 3; and the projections of the two intersection points formed by the center lines of the first inner tube 4 and the second inner tube 5 and the end face of the balloon 6 away from the hose 3 on the maximum cross-sectional circle of the balloon 6 are located on the diameter of the maximum cross-sectional circle; a first guide wire 7 and a second guide wire 8 pass through the first inner tube 4 and the second inner tube 5 respectively and form a double-guide-wire delivery track to guide the movement of the balloon 6.

[0030] It is worth mentioning that in the actual operation process of the conventional single-guide-wire balloon, the guide wire is prone to position deviation in the blood vessel, so the balloon may contact the inner wall of the blood vessel during delivery, causing damage to the blood vessel, and the single-guide-wire balloon device has poor passability when facing narrow and curved blood vessel passages. The double-guide-wire balloon device provided by the present application allows two guide wires to pass through the balloon 6 by arranging the first inner tube 4 and the second inner tube 5, the limiting effect and the track effect of the double guide wires can effectively reduce the damage of the balloon 6 to the blood vessel and improve the delivery capacity of the overall device.

[0031] As a preferred embodiment, the distance between the center lines of the first inner tube 4 and the second inner tube 5 and the two intersection points formed by the end face of the balloon 6 away from the hose 3 is not less than 1 / 4 of the diameter of the balloon 6. The track width of the delivery track formed by the first guide wire 7 and the second guide wire 8 will affect the passability, when the track width is too small, the track effect is not obvious. Therefore, preferably, the distance between the center lines of the first inner tube 4 and the second inner tube 5 and the two intersection points formed by the end face of the balloon 6 away from the hose 3 is not less than 1 / 4 of the diameter of the balloon 6, which can ensure the passability of the double-guide-wire balloon 6 device.

[0032] As a preferred embodiment, the center lines of the first inner tube 4 and the second inner tube 5 and the two intersection points formed by the end face of the balloon 6 away from the hose 3 are symmetrical based on the center axis of the balloon 6.

[0033] The above symmetrical design can make the balloon 6 as possible as in the center of the blood vessel during the delivery process of the balloon 6, avoiding scratching the inner wall of the blood vessel and reducing the damage to the blood vessel.

[0034] The double-guide-wire balloon device provided by the utility model, the end of the balloon 6 away from the hose 3 is in the shape of a truncated cone, in the embodiment, the two intersection points formed by the center lines of the first inner tube 4 and the second inner tube 5 and the end face of the balloon 6 away from the hose 3 are both located on the upper end face of the truncated cone, the cross-sectional area of the upper end face is small, therefore, the resistance of the balloon 6 during transportation can be reduced, and the passability of the balloon 6 is improved.

[0035] As a preferred embodiment, the material of the balloon 6 is selected from one of polyethylene, polyethylene terephthalate, polyurethane, polyamide or polyether block polyamide. The balloon made of the above-mentioned materials has the characteristics of high strength and high expansion performance. The above-mentioned materials can be purchased on the market.

[0036] In the embodiment, the pressurized medium delivered by the pressurized port 1 is contrast medium, which is used to pressurize the balloon 6 to make the balloon 6 expand, and the position of the balloon 6 in the blood vessel can be determined through the contrast medium.

[0037] When the balloon 6 is used clinically, after the balloon 6 is delivered to the lesion site, the balloon 6 needs to be pressurized to make the balloon expand, and the contrast medium is used as the medium for pressurizing the balloon 6, so that the position of the balloon 6 can be determined while the balloon 6 is expanded.

[0038] Further, the balloon 6 further comprises a developing ring 9, which is located in the balloon 6 and sleeved on the first inner tube 4 and the second inner tube 5.

[0039] By arranging the developing ring 9 in the balloon 6, the position of the balloon 6 in the blood vessel can be accurately monitored by using a specific instrument, and the position of the balloon 6 can also be determined when the pressurized medium such as physiological saline does not have developing function.

[0040] Please refer to Figure 3 , and Figure 2 The difference between the embodiment and the embodiment shown in the figure is that, in the embodiment, the two intersection points formed by the center lines of the first inner tube 4 and the second inner tube 5 and the end face of the balloon 6 away from the hose 3 are both located on the side of the truncated cone of the balloon 6 away from the hose 3, and the opening distance of the first inner tube 4 and the second inner tube 5 at the end of the balloon 6 away from the hose 3 is far, so that the track effect formed by the first guide wire 7 and the second guide wire 8 is more obvious.

[0041] Please refer to Figure 4 , and Figure 2The difference between the shown embodiment and the embodiment is that the center lines of the first inner tube 4 and the second inner tube 5 are no longer symmetrical based on the center axis of the balloon 6 at the two intersection points formed by the balloon 6 away from the end face of the hose 3, and the openings of the first inner tube 4 and the second inner tube 5 on the end face of the balloon 6 away from the hose 3 are located at the side of the frustum of the balloon 6 away from the hose 3 and the center position of the upper end face, respectively. The embodiment can provide more selectivity. In actual clinical operation, the second guide wire 8 can be first inserted through the second inner tube 5, and the operation can be performed in a single guide wire delivery mode. If the balloon 6 cannot pass through some parts of the blood vessel due to poor passability, the first guide wire 7 can be inserted through the first inner tube 4 to form a double guide wire delivery, thereby improving the passability of the balloon 6.

[0042] Preferably, the diameter of the inflated balloon 6 is 0.75-5mm, and the length of the inflated balloon 6 is 6-30mm.

[0043] Preferably, the balloon 6 has a convex structure on the outer surface. It should be noted that the calcified plaque, fibrosis lesion and the like in the blood vessel are often difficult to achieve a better treatment effect by simply expanding the balloon 6. The convex structure provided on the surface of the balloon 6 can rub and cut the lesion tissue to remove the lesion and expand the blood vessel.

[0044] Preferably, a blade is mounted on the outer surface of the balloon 6 along the extension direction of the balloon 6 for cutting the lesion part. When the balloon 6 is inflated, the blade contacts the lesion part in the blood vessel and can more effectively cut the stubborn calcified lesion and plaque in the blood vessel.

[0045] Preferably, the balloon 6 has a drug coating on the outer surface for drug treatment of the lesion part. For the treatment of the blood vessel lesion part, a corresponding treatment means needs to be taken according to the actual situation of the patient. The drug coating is provided on the outer surface of the balloon 6. After the balloon is delivered to the lesion part and inflated, the drug coating contacts the lesion part, and the drug is used to achieve the effect of treating the lesion and expanding the blood vessel.

[0046] The double-guide-wire balloon device provided in the application includes the first inner tube 4 and the second inner tube 5. The first guide wire 7 and the second guide wire 8 are inserted through the first inner tube 4 and the second inner tube 5 respectively to form a double-guide-wire delivery track to guide the movement of the balloon 6. Since the double-guide-wire delivery track limits the movement path of the balloon 6 within a certain range, the balloon is not easy to deviate during movement, which greatly improves the passability of the balloon 6 and reduces the damage to the blood vessel during the delivery of the balloon 6.

Claims

1. A dual guidewire balloon device, characterized by, The push rod (2), the pressurized port (1) mounted at one end of the push rod (2), and the hose (3) connected to the other end of the push rod (2), wherein the balloon (6) is connected to the end of the hose (3) away from the push rod (2), and the first inner tube (4) and the second inner tube (5) are arranged in the balloon (6); The first inner tube (4) and the second inner tube (5) are both provided with openings at both ends, wherein the openings at one end of the first inner tube (4) and the second inner tube (5) are arranged on the end face of the balloon (6) away from the hose (3), and the openings at the other end are arranged on the hose (3); and the projections of the two intersection points formed by the center lines of the first inner tube (4) and the second inner tube (5) and the end face of the balloon (6) away from the hose (3) on the maximum cross-sectional circle of the balloon (6) are located on the diameter of the maximum cross-sectional circle. The first guide wire (7) and the second guide wire (8) pass through the first inner tube (4) and the second inner tube (5) respectively and form a double-guide-wire delivery track to guide the movement of the balloon (6).

2. The dual guidewire balloon device of claim 1, wherein, The distance between the two intersection points formed by the center lines of the first inner tube (4) and the second inner tube (5) and the end face of the balloon (6) away from the hose (3) is not less than 1 / 4 of the diameter of the balloon (6).

3. The dual guidewire balloon device of claim 1, wherein, The two intersection points formed by the center lines of the first inner tube (4) and the second inner tube (5) and the end face of the balloon (6) away from the hose (3) are symmetrical based on the center axis of the balloon (6).

4. A dual guidewire balloon device as in any of claims 1-3, wherein, The material of the balloon (6) is selected from one of polyethylene, polyethylene terephthalate, polyurethane, polyamide, or polyether block polyamide.

5. A dual guidewire balloon device as in any of claims 1-3, wherein, The pressurized medium delivered by the pressurized port (1) is contrast medium, which is used to pressurize the balloon (6) to inflate the balloon (6), and at the same time determine the position of the balloon (6) in the blood vessel through the contrast medium.

6. A dual guidewire balloon device as in any of claims 1-3, wherein, It also includes a developing ring (9) located in the balloon (6), and the developing ring (9) is sleeved on the first inner tube (4) and the second inner tube (5).

7. A dual guidewire balloon device as in any of claims 1-3, wherein, The inflated diameter of the balloon (6) is 0.75-5mm, and the length of the inflated balloon (6) is 6-30mm.

8. A dual guidewire balloon device as in any of claims 1-3, wherein, The outer surface of the balloon (6) has a convex structure.

9. A dual guidewire balloon device as in any of claims 1-3, wherein, The outer surface of the balloon (6) is provided with a blade along the extension direction of the balloon (6) for cutting the lesion site.

10. A dual guidewire balloon device as in any of claims 1-3, wherein, The outer surface of the balloon (6) is covered with a drug coating for drug treatment of the lesion site.

Images