Nipple cutting balloon dilation catheter

Abstract

The utility model provides a kind of nipple cutting balloon dilatation catheter, comprising: the balloon part of being arranged in the front part of catheter, the tube wall of the balloon part is wrapped with balloon, the outer surface of the balloon is equipped with multiple knife filaments, and the knife filament is used to be connected with high frequency generator.The utility model can be sent into or pulled out duodenal nipple in the guide of guide wire, and dilate duodenal nipple, when nipple sphincter stenosis appears, handle joint connects high frequency generator, and the knife filament on the surface of balloon can carry out electroincision effect to the tissue of stenosis, increase stenosis dilatation efficiency and effect.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically, to a nipple cutting balloon dilation catheter. Background Technology

[0002] Endoscopic retrograde cholangiopancreatography (ERCP) is one of the important treatment methods for biliary and pancreatic diseases such as common bile duct stones, obstructive jaundice, bile duct stricture, pancreatitis, and pancreatic duct stones. In order to successfully remove bile duct or pancreatic duct stones, place bile duct or pancreatic duct stents, and relieve duodenal papillary strictures, duodenal papillary balloon dilation is performed using a papillary balloon dilation catheter after sphincterotomy.

[0003] Currently used balloon dilation catheters are all dual-channel or triple-channel tubes, and the balloons are made of materials such as plastic, rubber, and polymers. By injecting air, contrast agents, or saline into the balloon cavity, the balloon is inflated. During inflation, the balloon exerts pressure on the duodenal papilla, gradually dilating the papillary sphincter. When papillary sphincter stenosis occurs, an indentation appears on the balloon surface. By gradually increasing the pressure, the mucosa, submucosal scars, and muscle tissue at the stenosis are torn, and the indentation gradually diminishes until it disappears. However, if the stenosis is caused by relatively tough scar tissue, gradually increasing the pressure to the maximum tension the balloon can withstand, or even causing balloon rupture, makes it difficult to dilate the stenotic scar. Some balloons have cutting plastic or metal blades on their surface to cut the tissue at the stenosis. This sharp cutting is not only generally inefficient but also prone to causing bleeding at the stenosis, and the balloon manufacturing process is complex. Utility Model Content

[0004] In response to the aforementioned technical problem, a nipple cutting balloon dilation catheter is provided.

[0005] The technical means adopted in this utility model are as follows:

[0006] A nipple cutting balloon dilation catheter includes: a balloon portion disposed at the front of the catheter, the balloon portion having a balloon wrapped around its wall, and the outer surface of the balloon having multiple blades for connecting to a high-frequency generator.

[0007] Furthermore, the balloon is a cylindrical balloon, and the surface of the balloon is provided with multiple longitudinal grooves, with the cutting wire placed in the grooves.

[0008] Furthermore, the blade has 2-4 blades, which adopt a spiral spring-like structure and travel in a spiral shape within the groove.

[0009] Furthermore, it also includes a head, a body, a guidewire, and an injection section, wherein the head, balloon, and body are connected sequentially from head to tail, and the guidewire and injection section are both connected to the body.

[0010] Furthermore, the head has a conical structure and an internal channel I, which runs through the middle of the head from head to tail.

[0011] Furthermore, the balloon portion is a dual-channel tube, with channel II and channel III inside. Channel II is connected to channel I in the head, and channel III is connected to the balloon.

[0012] Furthermore, the balloon section has two side holes on its tube wall that communicate with channel III. The side holes are located inside the balloon and communicate with it. The head end of channel III is a blind end.

[0013] Furthermore, the tube wall of the balloon section is provided with two positioning rings for fixing the cutting wire. The two positioning rings are located at both ends of the two side holes, and the positioning rings have an insulating coating corresponding to the two ends of the cutting wire.

[0014] Furthermore, the body is a dual-channel tube, with channel IV and channel V inside, and channel IV and channel V are respectively connected to channel II and channel III of the balloon section;

[0015] The tail end of the body is wrapped with a handle, and the handle is provided with a connector. The tail sides of the multiple blades converge and are placed inside the tube wall of the body and connected to the connector.

[0016] Furthermore, both the guidewire section and the injection section are single-channel tubes, with channels VI and VII respectively inside, and channels VI and VII are respectively connected to channels IV and V of the body section.

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

[0018] 1. The nipple cutting balloon dilation catheter provided by this utility model has 2-4 metal blades on the surface of the dilation balloon. When the stenosis is difficult to dilate, the blades generate an electric cutting effect on the tissue they contact by connecting to a high-frequency generator, thereby relieving the stenosis.

[0019] 2. The nipple cutting balloon dilation catheter provided by this utility model uses the scalpel on the surface of the balloon to generate an electro-cutting effect on the stenotic tissue. While cutting the stenosis, electrocoagulation hemostasis can be performed, reducing the risk of bleeding at the stenotic site inside the nipple.

[0020] 3. The nipple cutting balloon dilation catheter provided by this utility model has a scalpel located in a groove on the surface of the balloon, with only half of the scalpel's cross-section exposed on the balloon surface. This not only facilitates balloon insertion but also ensures the scalpel is firmly fixed and will not fall off the balloon surface.

[0021] 4. The nipple cutting balloon dilation catheter provided by this utility model has a spiral spring-shaped blade structure. The blade will be stretched or shortened as the balloon expands or is released, and the blade will not fall off the balloon.

[0022] 5. The nipple cutting balloon dilation catheter provided by this utility model has a scalpel positioning ring on the balloon, and the positioning ring has an insulating coating at both ends of the scalpel, which can reduce damage to tissues outside the stenosis.

[0023] Based on the above reasons, this utility model can be widely promoted in fields such as medicine. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of this utility model.

[0026] Figure 2 This is a schematic diagram of the uninflated balloon of this utility model.

[0027] Figure 3 This is a schematic diagram of the guide wire insertion according to the present invention.

[0028] Figure 4 This is a schematic diagram of the present invention, showing the insertion of a guidewire and connection to a balloon syringe.

[0029] Figure 5 This is a schematic diagram of the groove on the surface of the balloon of this utility model.

[0030] Figure 6 This is a schematic diagram showing the arrangement of multiple blades on the surface of the balloon of this utility model.

[0031] Figure 7 This is a schematic diagram of the structure of the blade wire of this utility model.

[0032] In the diagram: 1. Head; 11. Channel I; 2. Balloon section; 21. Channel II; 22. Channel III; 23. Side hole; 24. Positioning ring; 25. Groove; 3. Body section; 31. Channel IV; 32. Channel V; 33. Connector; 4. Guidewire section; 41. Channel VI; 5. Injection section; 51. Channel VII; 6. Balloon; 7. Blade wire. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] This invention provides a nipple cutting balloon dilation catheter, comprising a head 1, a balloon section 2, a body section 3, a guidewire section 4, and an injection section 5. The head 1, balloon section 2, and body section 3 are connected sequentially from head to tail, and the guidewire section 4 and injection section 5 are both connected to the body section 3. The balloon section 2 is located at the front of the catheter, and a balloon 6 is wrapped around the wall of the balloon section 2. Multiple blades 7 are provided on the outer surface of the balloon 6 for connection to a high-frequency generator. The balloon 6 is a cylindrical balloon, and its surface has multiple longitudinal grooves 25, each groove containing a spirally arranged blade 7.

[0035] In a preferred embodiment, the blade 7 has 2-4 blades, which adopt a spiral spring-like structure and run spirally within the groove 25. In this embodiment, there are 4 blades 7, which are evenly distributed along the circumference of the balloon 6.

[0036] In a preferred embodiment, the head 1 has a conical structure and an internal channel I11, which runs through the middle of the head 1 from head to tail.

[0037] In a preferred embodiment, the balloon section 2 is a dual-channel tube, internally equipped with channel II 21 and channel III 22. Channel II 21 communicates with channel I 11 of the head 1, and channel III 22 communicates with the balloon 6. The tube wall of the balloon section 2 has two side holes 23 communicating with channel III 22. The side holes 23 are located inside and communicate with the balloon 6, and the head end of channel III 22 is a blind end. The tube wall of the balloon section 2 has two positioning rings 24 for fixing the cutting wire 7. The two positioning rings 24 are located at both ends of the two side holes 23, and the positioning rings 24 have an insulating coating corresponding to the two ends of the cutting wire 7.

[0038] In a preferred embodiment, the body 3 is a dual-channel tube with channel IV 31 and channel V 32 inside. Channel IV 31 and channel V 32 are respectively connected to channel II 21 and channel III 22 of the balloon part 2. The tail end of the body 3 is wrapped with a handle, and the handle is provided with a connector 33 for connecting with the blades. The tail sides of the multiple blades 7 of the balloon part converge and are placed inside the tube wall of the body 3 and connected to the connector 33.

[0039] In a preferred embodiment, both the guidewire section 4 and the injection section 5 are single-channel tubes, with channels VI 41 and VII 51 respectively inside. Channels VI 41 and VII 51 are connected to channels IV 31 and V 32 of the body section 3, respectively.

[0040] Channels I11, II21, IV31, and VI41 constitute the guidewire channel for inserting the guidewire. Channels III22, V32, and VII51 constitute the injection channel, with the tail end of channel VII51 connected to the syringe.

[0041] This invention can be inserted into or withdrawn from the duodenal papilla under the guidance of a guidewire to dilate the duodenal papilla. When stenosis of the papillary sphincter occurs, the handle connector is connected to a high-frequency generator, and the scalpel on the surface of the balloon can perform an electro-cutting effect on the tissue at the stenosis, thereby increasing the efficiency and effect of stenosis dilation.

[0042] Use of this utility model:

[0043] After duodenoscopy to complete the cannulation of the common bile duct or pancreatic duct and the incision of the sphincter of Oddi, a guidewire is placed in the common bile duct or pancreatic duct. The guidewire is inserted through the head of this device and brought out through the guidewire section. An assistant fixes the guidewire and pushes the balloon dilation catheter forward. When the head enters the duodenal papilla, a syringe connected to the injection unit connector is used to inject air, contrast agent, or saline into the balloon to inflate it, thereby dilating the duodenal papilla. If the duodenal papilla has a significant indentation at the dilation site, making dilation difficult, the position of the balloon can be adjusted so that the stenotic ring is positioned between the positioning rings. The scalpel wire connector at the handle is connected to a high-frequency generator, and the scalpel wire cuts the tissue at the stenotic site using electrocautery current. Simultaneously, an electrocoagulation current can be connected to the connector to electrocoagulate and stop the bleeding at the incision site.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A nipple-cutting balloon dilation catheter, characterized in that, include: A balloon section (2) is provided at the front of the catheter. The balloon section (2) is wrapped with a balloon (6). The outer surface of the balloon (6) is provided with multiple blades (7). The blades (7) are used to connect to the high-frequency generator.

2. The nipple-cutting balloon dilation catheter according to claim 1, characterized in that, The balloon (6) is a cylindrical balloon, and the surface of the balloon (6) is provided with multiple longitudinal grooves (25), and the scalpel (7) is placed in the grooves (25).

3. The nipple-cutting balloon dilation catheter according to claim 2, characterized in that, The blade (7) has 2-4 blades, and the blade (7) adopts a spiral spring-like structure and travels in a spiral shape in the groove (25).

4. The nipple-cutting balloon dilation catheter according to claim 1, characterized in that, It also includes a head (1), a body (3), a guidewire (4) and an injection part (5), wherein the head (1), the balloon (2) and the body (3) are connected sequentially from head to tail, and the guidewire (4) and the injection part (5) are both connected to the body (3).

5. The nipple-cutting balloon dilation catheter according to claim 4, characterized in that, The head (1) has a conical structure and an internal channel I (11) that runs through the middle of the head (1) from head to tail.

6. The nipple-cutting balloon dilation catheter according to claim 4, characterized in that, The balloon section (2) is a dual-channel tube with channel II (21) and channel III (22) inside. Channel II (21) is connected to channel I (11) of the head (1), and channel III (22) is connected to the balloon (6).

7. The nipple-cutting balloon dilation catheter according to claim 6, characterized in that, The balloon section (2) has two side holes (23) on its tube wall that communicate with the channel (22). The side holes (23) are located inside the balloon (6) and communicate with the balloon (6). The head end of the channel (22) is a blind end.

8. The nipple-cutting balloon dilation catheter according to claim 7, characterized in that, The balloon section (2) has two positioning rings (24) on its tube wall for fixing the cutting wire (7). The two positioning rings (24) are located at both ends of the two side holes (23). The positioning rings (24) have an insulating coating at both ends of the cutting wire (7).

9. The nipple-cutting balloon dilation catheter according to claim 4, characterized in that, The body (3) is a dual-channel tube with channel IV (31) and channel V (32) inside. Channel IV (31) and channel V (32) are respectively connected to channel II (21) and channel III (22) of the balloon part (2). The tail end of the body (3) is wrapped with a handle, and the handle is provided with a connector (33). The tail sides of the multiple blades (7) converge and are placed inside the tube wall of the body (3) and connected to the connector (33).

10. The nipple-cutting balloon dilation catheter according to claim 4, characterized in that, Both the guidewire section (4) and the injection section (5) are single-channel tubes, with channels VI (41) and VII (51) respectively inside. Channels VI (41) and VII (51) are connected to channels IV (31) and V (32) of the body section (3) respectively.

Images