Balloon dilatation catheter for hepatobiliary surgery department

Abstract

The invention belongs to the technical field of medical instruments, and discloses a balloon dilatation catheter for hepatobiliary surgery, which comprises a catheter body, a backflow catheter and a main balloon, the catheter body is connected with a catheter connector, an air inlet branch pipe, an air outlet branch pipe and a push ball, the main air bag is connected with a protrusion and a main rotating assembly, the main rotating assembly comprises a first main flow guide piece, a second main flow guide piece and a main connecting sleeve, and a main air inlet and an auxiliary air inlet are formed in the catheter body. The push ball is connected with an auxiliary air bag, the auxiliary air bag is connected with an auxiliary rotating assembly, and the auxiliary rotating assembly comprises a first auxiliary flow deflector, a second auxiliary flow deflector and an auxiliary connecting sleeve; the main air bag, the auxiliary air bag and the push ball are rotationally connected with the catheter body, and in the process of inflating and expanding the catheter body, the flow deflectors conduct flow guiding on air entering the air bags, so that the air bags and the push ball rotate under the action of the air, hard objects hindering expansion of the air bags are broken, and the stone pushing efficiency and effect are improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a balloon dilation catheter for hepatobiliary surgery. Background Technology

[0002] The Department of Hepatobiliary Surgery mainly studies and treats diseases such as hepatocellular carcinoma, hepatobiliary stones, post-hepatitis cirrhosis, and acute liver failure caused by severe hepatitis. A balloon dilation catheter is a medical interventional device primarily used in the Department of Hepatobiliary Surgery for the treatment of hepatobiliary stones.

[0003] Current balloon dilation catheters directly dilate the tubes inside the body. When encountering hard objects that the balloon cannot dilate, forced dilation can easily damage the tubes, causing inflammation and other postoperative symptoms. Moreover, during the dilation process, due to the sudden expansion of the balloon, some stone particles may be difficult to move when the funnel-shaped groove pushes them, resulting in low efficiency and poor effect in removing stones. Summary of the Invention

[0004] This invention aims to provide a balloon dilation catheter for hepatobiliary surgery. A main rotating assembly rotatably connects the main balloon to the catheter body, while a connecting piece and a secondary rotating assembly rotatably connect the secondary balloon and pusher ball to the catheter body. During the inflation and dilation of the catheter body, a guide vane directs the gas entering the balloon, causing the balloon and pusher ball to rotate under the influence of the gas. This breaks up hard objects obstructing balloon dilation and improves the efficiency and effectiveness of moving stones. This invention solves the problems in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A balloon dilation catheter for hepatobiliary surgery includes a catheter body and a main balloon. One end of the catheter body is connected to a catheter connector, which is connected to a connector cap for closing. The other end of the catheter body is sealed with a pusher for pushing stones. The end of the catheter body near the catheter connector is also connected to an inlet branch pipe for connecting to an external air pump and an outlet branch pipe for venting air. A main rotating assembly is connected to the inner side of the main balloon. The main rotating assembly includes a first main flow vane, a second main flow vane, and a main connecting sleeve. The two ends of the first and second main flow vanes are respectively connected to the inner wall of the main balloon and the outer wall of the main connecting sleeve. The main connecting sleeve is rotatably fitted onto the outside of the catheter body. The catheter body has a main air inlet, which includes a first main air inlet and a second main air inlet arranged in a spiral configuration. The first main air inlet cooperates with the first main flow vane, and the second main air inlet cooperates with the second main flow vane. The first and second main flow vanes are respectively used as torque arms for the rotation of the main balloon.

[0007] Furthermore, the outer wall of the main airbag is also connected with several sets of protrusions, and each set of protrusions is arranged in a spiral shape on the outer wall of the main airbag.

[0008] Furthermore, the protrusion is semi-ellipsoidal.

[0009] Furthermore, a return conduit is provided on the inner side of the conduit body. The air inlet of the return conduit is connected to the inner cavity of the main airbag, and the air outlet of the return conduit passes through the air outlet branch and is located on its outer side.

[0010] Furthermore, the main rotating assembly and the main air inlet are provided in two sets, and the two sets of the main rotating assembly and the two sets of the main air inlet are evenly arranged in the main airbag; the air inlet end of the return duct is located at the center position between the two sets of the main rotating assembly and the two sets of the main air inlet.

[0011] Furthermore, the push ball is rotatably and sealingly connected to the catheter body via a connector.

[0012] Furthermore, the free end of the connector is connected to a secondary airbag, and the secondary airbag is connected to a secondary rotating assembly. The secondary rotating assembly includes a first secondary guide vane, a second secondary guide vane, and a secondary connecting sleeve. The two ends of the first and second secondary guide vanes are respectively connected to the inner wall of the secondary airbag and the outer wall of the secondary connecting sleeve. The secondary connecting sleeve is rotatably sleeved on the outside of the conduit body. The conduit body also has a secondary air inlet, which includes a first secondary air inlet and a second secondary air inlet arranged in a spiral. The first secondary air inlet cooperates with the first secondary guide vane, and the second secondary air inlet cooperates with the second secondary guide vane. The first and second secondary guide vanes are respectively used as torque arms for the rotation of the secondary airbag. The air inlet end of the return conduit is also connected to the inner cavity of the secondary airbag.

[0013] Furthermore, the diameter of the push ball is greater than the outer diameter of the main connecting sleeve, the secondary connecting sleeve, and the connecting piece.

[0014] Furthermore, both the main airbag and the secondary airbag are made of medical-grade rubber material; the protrusion and the push ball are both made of metal material.

[0015] Furthermore, the air inlet end of the return duct has multiple air inlets, and the air inlets of the return duct that communicate with the inner cavity of the auxiliary airbag are respectively mirror-symmetrically arranged on both sides of the auxiliary rotating assembly.

[0016] The principles and beneficial effects of the technical solution are as follows:

[0017] 1. The present invention provides a balloon dilation catheter for hepatobiliary surgery, wherein a main balloon is rotatably sleeved on the outside of the catheter body. When the main balloon is inflated by an external air pump through the air inlet branch, the airflow enters the main balloon from the first main air inlet and the second main air inlet. Under the action of the first and second main flow vanes, the airflow acts on the inner wall of the main balloon in opposite directions, so that the main balloon is subjected to opposite torques during inflation and expansion, causing it to rotate. This breaks up hard objects in the human body's tubing that affect the expansion of the balloon catheter, thus avoiding damage to the human body's tubing caused by the rigid expansion of the balloon catheter.

[0018] 2. The present invention provides a balloon dilation catheter for hepatobiliary surgery, which uses a connector and a secondary rotation assembly to connect the pusher ball to the catheter body. The pusher ball pushes stones in the human body's tubing. When the stones are stuck to the inner wall of the human body's tubing and cannot be pushed, the secondary balloon can be inflated and expanded by an external air pump through the air inlet branch. The airflow enters the secondary balloon from the first and second secondary air inlets. Under the action of the first and second secondary guide vanes, the airflow acts on the inner wall of the secondary balloon in opposite directions. During the inflation and expansion process, the secondary balloon is subjected to opposing torques, causing it to rotate and drive the pusher ball to rotate, thereby improving the ability to push stones, improving the efficiency and effect of stone removal, and improving the functionality and applicability of the entire dilation catheter.

[0019] 3. The present invention provides a balloon dilation catheter for hepatobiliary surgery, wherein a spiral protrusion is connected to the outer wall of the main balloon to further improve the breaking effect on hard objects in the human body and improve the overall permeability of the balloon dilation catheter; the protrusion is set as a semi-ellipsoid and the diameter of the push ball is larger than the outer diameter of the main connecting sleeve, the secondary connecting sleeve and the connecting piece, which not only facilitates the intervention and withdrawal of the entire balloon dilation catheter, but also ensures the treatment effect on hard masses and stones;

[0020] 4. The present invention provides a balloon dilation catheter for hepatobiliary surgery, wherein a reflux catheter is provided on the inner side of the catheter body, so that when it encounters hard objects and stones, gas can be continuously introduced, causing the main balloon, the auxiliary balloon and the pusher to rotate continuously, and excess gas is discharged from the body through the reflux catheter; two main rotating components are connected to the main balloon and are evenly arranged on its inner side, and the air inlet of the reflux catheter is located at the center of the two main rotating components; the other two air inlets of the reflux catheter are mirror-symmetrically arranged on both sides of the auxiliary rotating components; all of these are beneficial to improving the uniformity of force on the entire balloon dilation catheter during the dilation process, ensuring the stability of the main balloon, the auxiliary balloon and the pusher during the rotation process, and further improving the functionality of the entire dilation catheter. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of a balloon dilation catheter for hepatobiliary surgery according to the present invention;

[0022] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle;

[0023] Figure 3 for Figure 1 A magnified view of a portion of point B in the middle;

[0024] The names of the corresponding labels in the attached diagram are:

[0025] 1. Conduit body; 2. Conduit connector; 3. Connector cap; 4. Inlet branch pipe; 5. Return conduit; 6. Outlet branch pipe; 7. Main airbag; 8. First main air inlet; 9. Second main air inlet; 10. First main guide vane; 11. Second main guide vane; 12. Main connecting sleeve; 13. Protrusion; 14. Secondary airbag; 15. First secondary air inlet; 16. Secondary secondary air inlet; 17. First secondary guide vane; 18. Secondary connecting sleeve; 19. Connector; 20. Push ball; 21. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0027] like Figures 1 to 3 As shown, a balloon dilation catheter for hepatobiliary surgery includes a catheter body 1, a reflux catheter 5, and a main balloon 7. One end of the catheter body 1 is connected to a catheter connector 2, which is connected to a connector cap 3 for closing. The other end of the catheter body 1 is rotatably connected to a pusher ball 21 for pushing stones via a connector 20. The end of the catheter body 1 near the catheter connector 2 is also connected to an inlet branch pipe 4 for connecting to an external air pump and an outlet branch pipe 6 for venting air. The outer wall of the main balloon 7 is connected to several sets of semi-elliptical protrusions 13, each set of protrusions 13 being spirally arranged on the outer wall of the main balloon 7. The inner side of the main balloon 7 is connected to two main rotating components, each main rotating component including a first main flow vane. 10. The second main guide vane 11 and the main connecting sleeve 12 are respectively connected at both ends to the inner wall of the main airbag 7 and the outer wall of the main connecting sleeve 12. The main connecting sleeve 12 is rotatably sleeved on the outside of the duct body 1. The duct body 1 has two sets of main air inlets, including a first main air inlet 8 and a second main air inlet 9 arranged in a spiral. The first main air inlet 8 is configured to cooperate with the first main guide vane 10, and the second main air inlet 9 is configured to cooperate with the second main guide vane 11. The first main guide vane 10 and the second main guide vane 11 are respectively used as torque arms for the rotation of the main airbag 7. The two sets of main rotating components and the two sets of main air inlets are evenly arranged inside the main airbag 7.

[0028] The free end of the connector 20 is connected to the auxiliary airbag 14, and the auxiliary airbag 14 is connected to the auxiliary rotating assembly. The auxiliary rotating assembly includes a first auxiliary guide vane 17, a second auxiliary guide vane 18, and an auxiliary connecting sleeve 19. The two ends of the first auxiliary guide vane 17 and the second auxiliary guide vane 18 are respectively connected to the inner wall of the auxiliary airbag 14 and the outer wall of the auxiliary connecting sleeve 19. The auxiliary connecting sleeve 19 is rotatably sleeved on the outside of the conduit body. The conduit body 1 is also provided with an auxiliary air inlet. The auxiliary air inlet includes a first auxiliary air inlet 15 and a second auxiliary air inlet 16 arranged in a spiral. The first auxiliary air inlet 15 is configured to cooperate with the first auxiliary guide vane 17, and the second auxiliary air inlet 16 is configured to cooperate with the second auxiliary guide vane 18. The first auxiliary guide vane 17 and the second auxiliary guide vane 18 are respectively used for the torque arm of the rotation of the auxiliary airbag 14.

[0029] The return conduit 5 includes three air inlets. One air inlet is located at the center of the main airbag 7 and communicates with the inner cavity of the main airbag 7. The other two air inlets are mirror-symmetrically arranged on both sides of the auxiliary rotating assembly and communicate with the inner cavity of the auxiliary airbag 14. The air outlet of the return conduit 5 passes through the air outlet branch pipe 6 and is located on its outer side.

[0030] The diameter of the push ball 21 is larger than the outer diameter of the main connecting sleeve 12, the secondary connecting sleeve 19 and the connector 20; the main airbag 7 and the secondary airbag 14 are both made of medical rubber material; the protrusion 13 and the push ball 21 are both made of metal material.

[0031] The specific implementation process is as follows:

[0032] When using this balloon dilation catheter for interventional procedures, the end of the catheter body 1 connected to the pusher 21 is inserted into the human body's conduit, and the pusher 21 is used to push the stone. Depending on the actual situation, the balloon dilation catheter is inflated using an external air pump connected to the air inlet branch 4, so that the main balloon 7 rotates while dilating to deal with hard objects in the human body's conduit. The auxiliary balloon 14 also rotates while dilating, driving the pusher 21 to rotate, thereby improving the pushing effect and efficiency of the pusher 21 on the stone. During continuous inflation, when both the main balloon 7 and the auxiliary balloon 14 reach their maximum pressure, if continuous inflation is required to allow the main balloon 7, the auxiliary balloon 14, and the pusher 21 to continue rotating, the outlet end of the return catheter 5 is opened, so that the excess gas injected into the dilation catheter flows around once and is discharged from the outlet end of the return catheter 5, thereby achieving continuous rotation of the main balloon 7, the auxiliary balloon 14, and the pusher 21.

[0033] When the main airbag 7 is inflated by an external air pump through the intake manifold 4, airflow enters the main airbag 7 through the first main air intake 8 and the second main air intake 9. Under the action of the first main guide vane 10 and the second main guide vane 11, the airflow acts on the inner wall of the main airbag 7 in opposite directions, causing the main airbag 7 to rotate under the action of opposing torques during inflation and expansion. This breaks up hard objects in the human body's tubing that affect the expansion of the balloon catheter, preventing damage to the human body's tubing from the rigid expansion of the balloon catheter. At the same time, airflow also enters the auxiliary airbag 14 through the first secondary air intake 15 and the second secondary air intake 16. Under the action of the first secondary guide vane 17 and the second secondary guide vane 18, the airflow acts on the inner wall of the auxiliary airbag 14 in opposite directions, causing the auxiliary airbag 14 to rotate under the action of opposing torques during inflation and expansion, and driving the pusher ball. The main balloon 7 rotates to enhance its ability to push stones, thereby improving the efficiency and effectiveness of stone removal. A spiral protrusion 13 is connected to the outer wall of the main balloon 7 to improve the breaking effect on hard objects inside the body's channels. The diameter of the semi-ellipsoidal protrusion 13 and the pusher ball 21 is larger than the outer diameter of the main connecting sleeve 12, the secondary connecting sleeve 19, and the connector 20, facilitating the insertion and withdrawal of the entire balloon dilation catheter and ensuring the treatment effect on hard lumps and stones. The main balloon 7 connects to two main rotating components evenly arranged on its inner side. The air inlet of the return conduit 5 is located at the center of the two main rotating components, and the other two air inlets of the return conduit 5 are mirror-symmetrically arranged on both sides of the secondary rotating component. All of these contribute to improving the uniformity of force during the dilation process of the entire balloon dilation catheter, ensuring the stability of the main balloon 7, the secondary balloon 14, and the pusher ball 21 during rotation.

[0034] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific technical solutions or characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A balloon dilation catheter for hepatobiliary surgery, characterized in that, The device includes a catheter body and a main airbag. One end of the catheter body is connected to a catheter connector, which is connected to a connector cap for closing. The other end of the catheter body is sealed with a pusher for pushing stones. The end of the catheter body near the catheter connector is also connected to an inlet branch pipe for connecting to an external air pump and an outlet branch pipe for venting air. The inner side of the main airbag is connected to a main rotating assembly, which includes a first main guide vane, a second main guide vane, and a main connecting sleeve. The two ends of the first and second main guide vanes are respectively connected to the inner wall of the main airbag and the outer wall of the main connecting sleeve. The main connecting sleeve is rotatably fitted onto the outside of the catheter body. The catheter body has a main air inlet, which includes a first main air inlet and a second main air inlet arranged in a spiral configuration. The first main air inlet cooperates with the first main guide vane, and the second main air inlet cooperates with the second main guide vane. The first and second main guide vanes are respectively used as torque arms for the rotation of the main airbag.

2. The balloon dilation catheter for hepatobiliary surgery according to claim 1, characterized in that, The outer wall of the main airbag is also connected to several sets of protrusions, and each set of protrusions is arranged in a spiral shape on the outer wall of the main airbag.

3. The balloon dilation catheter for hepatobiliary surgery according to claim 2, characterized in that, The protrusion is semi-ellipsoidal.

4. A balloon dilation catheter for hepatobiliary surgery according to claim 3, characterized in that, The inner side of the duct body is also provided with a return duct. The air inlet end of the return duct is connected to the inner cavity of the main airbag, and the air outlet end of the return duct passes through the air outlet branch and is located on its outer side.

5. A balloon dilation catheter for hepatobiliary surgery according to claim 4, characterized in that, The main rotating assembly and the main air inlet are provided in two sets, and the two sets of main rotating assemblies and the two sets of main air inlets are evenly arranged in the main airbag; the air inlet end of the return duct is located at the center position between the two sets of main rotating assemblies and the two sets of main air inlets.

6. A balloon dilation catheter for hepatobiliary surgery according to claim 4, characterized in that, The push ball is rotatably and sealed to the catheter body via a connector.

7. A balloon dilation catheter for hepatobiliary surgery according to claim 6, characterized in that, The free end of the connector is connected to a secondary airbag, which is connected to a secondary rotating assembly. The secondary rotating assembly includes a first secondary guide vane, a second secondary guide vane, and a secondary connecting sleeve. The two ends of the first and second secondary guide vanes are respectively connected to the inner wall of the secondary airbag and the outer wall of the secondary connecting sleeve. The secondary connecting sleeve is rotatably sleeved on the outside of the conduit body. The conduit body also has a secondary air inlet, which includes a first secondary air inlet and a second secondary air inlet arranged in a spiral. The first secondary air inlet cooperates with the first secondary guide vane, and the second secondary air inlet cooperates with the second secondary guide vane. The first and second secondary guide vanes are respectively used as torque arms for the rotation of the secondary airbag. The air inlet end of the return conduit is also connected to the inner cavity of the secondary airbag.

8. A balloon dilation catheter for hepatobiliary surgery according to claim 7, characterized in that, The diameter of each push ball is larger than the outer diameter of the main connecting sleeve, the secondary connecting sleeve, and the connecting piece.

9. A balloon dilation catheter for hepatobiliary surgery according to claim 7, characterized in that, Both the main airbag and the secondary airbag are made of medical-grade rubber; the protrusion and the push ball are made of metal.

10. A balloon dilation catheter for hepatobiliary surgery according to claim 7, characterized in that, The air inlet end of the return duct has multiple air inlets, and the air inlets that communicate with the inner cavity of the auxiliary airbag are respectively mirror-symmetrically arranged on both sides of the auxiliary rotating assembly.

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