Porta hepatis blood flow blocking device
By combining an elastic support component inside the blocking tube with air pressure, the problem of unstable blocking force in existing hepatic hilum blood flow blocking devices has been solved, achieving stable blocking effect and ease of operation.
Patent Information
- Application Number
- CN202520217803.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-11
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-02-11
AI Technical Summary
The existing hepatic hilum blood flow blocking device has a loose blocking tube and unstable blocking force, resulting in poor blocking effect. The existing blocking tube is prone to loosening and the blocking force is unstable, so the blocking effect of the existing hepatic hilum blood flow blocking device is not good.
An elastic support is installed inside the blocking hose. By installing the elastic support inside the blocking hose, combined with air pressure, a stable blocking pressure is provided, and the combination of the elastic support and air pressure provides a stable blocking effect.
It achieves stable clamping force during the blocking process, resulting in good blocking effect, convenient operation, prevention of loosening, and improved stability and effectiveness of blocking.
Smart Images
Figure CN223614877U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hepatic portal vein blocking structure technology, and in particular to a device for blocking hepatic portal vein blood flow. Background Technology
[0002] Portal occlusion is a commonly used technique in liver surgery. Devices used to occlude blood flow at the porta hepatis are employed during these procedures to temporarily clamp or block blood vessels at the porta hepatis, reducing blood supply to the liver and minimizing intraoperative bleeding. However, current devices for porta hepatis occlusion typically employ a occlusion tube, which is tied to the blood vessel with surgical forceps to achieve occlusion. This method is prone to loosening. Furthermore, the occlusion is achieved through the applied pressure after the tube is tightened, resulting in inconsistent occlusion force and poor effectiveness. Utility Model Content
[0003] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a device for blocking blood flow in the porta hepatis. The device uses an elastic support member set inside the blocking tube to provide support force inside the blocking tube, which, together with the air pressure applied during the inflation process of the blocking tube, makes the blocking pressure stable.
[0004] The objective of this utility model is achieved through the following technical solution:
[0005] A device for occluding hepatic hilum blood flow includes an occlusion tube, an elastic support, a first connector, and a second connector. The occlusion tube has a first end and a second end that are opposite to each other. The first connector is connected to the first end, and the second connector is connected to the second end. The second connector and the first connector are detachably connected to form a ring structure. The elastic support is disposed inside the occlusion tube and supports the occlusion tube inside the occlusion tube. The occlusion tube is provided with a gas guide hole for guiding gas into the occlusion tube to inflate the occlusion tube.
[0006] Furthermore, the first connector is a insert tube, and the second connector is a sleeve. The insert tube is used to be inserted into the sleeve and sealed.
[0007] Furthermore, the outer wall of the insert tube is provided with a limiting protrusion; the inner wall of the sleeve is provided with a limiting groove; the limiting protrusion is used to engage with the limiting groove after the insert tube is inserted into the sleeve.
[0008] Furthermore, the end of the insertion tube away from the first end is provided with a guide bevel.
[0009] Furthermore, the first end and the second end are provided with guide channels inside; the inner diameter of the guide channels gradually decreases from the inside to the outside.
[0010] Furthermore, the elastic support is a spring, which passes through the blocking hose and is located between the first end and the second end.
[0011] Furthermore, the air guide hole is connected to an air guide bend; the inner diameter of the air guide bend is smaller than the inner diameter of the blocking hose.
[0012] Furthermore, the blocking hose is a silicone hose.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] Because the blocking hose is equipped with an elastic support, the elastic force provided by the elastic support can abut against the inner wall of the blocking hose. Therefore, during the blocking process, the pressure applied to the blocking position is the gas pressure and the elastic force of the internal elastic support. This makes the clamping force applied to the blocking position stable, the blocking process stable, and the blocking effect good. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a cross-sectional view of the present invention;
[0017] Figure 3 This is a cross-sectional view of another aspect of the present invention.
[0018] In the diagram: 10. Blocking hose; 11. Air duct; 12. Guiding channel; 20. Insert tube; 21. Limiting ring; 22. Guiding bevel; 30. Sleeve; 31. Limiting groove; 40. Elastic support. Detailed Implementation
[0019] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:
[0020] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
[0022] like Figure 1 , Figure 2 as well as Figure 3 The device for blocking hepatic hilum blood flow shown includes a blocking hose 10, an elastic support member 40, a first connector and a second connector. Specifically, the blocking hose 10 has a first end and a second end, and the first end and the second end are the ends of the blocking hose 10 that are opposite to each other.
[0023] The first connector is connected to the first end, and the second connector is connected to the second end. The second connector and the first connector are detachably connected. Since the first connector and the second connector are respectively connected to the two ends of the blocking hose 10, the blocking hose 10 can form a ring structure after the first connector and the second connector are connected.
[0024] In addition, the elastic support 40 is disposed inside the blocking hose 10, and supports the blocking hose 10 inside the blocking hose 10. The blocking hose 10 is provided with an air guide hole, which is used to guide gas into the blocking hose 10. During the process of introducing gas through the air guide hole, the blocking hose 10 can be inflated.
[0025] Based on the above structure, when using the hepatic hilum blood flow occlusion device of this utility model, during the occlusion action, the first connector connected to the first end of the occlusion tube 10 can be connected to the second connector at the second end of the occlusion tube 10 using surgical forceps or other tools. This allows the occlusion tube 10 to form a ring structure surrounding the location requiring occlusion. Then, an inflation device is used to connect the air inlet, continuously introducing gas into the occlusion tube 10. During inflation, the occlusion tube 10 is compressed at the occlusion location under air pressure. Simultaneously, because the occlusion tube 10 is internally equipped with an elastic support member 40, the elastic force provided by the elastic support member 40 abuts against the inner wall of the occlusion tube 10. Therefore, during the occlusion process, the pressure applied to the occlusion location is the gas pressure and the elastic force of the internal elastic support member 40. This results in a stable compressive force applied to the occlusion location, a stable occlusion process, and a good occlusion effect.
[0026] Furthermore, in this embodiment, the first connector is an insert tube 20, and the second connector is a sleeve 30. Thus, during the blocking action, since the blocking hose 10 is a flexible hose, the insert tube 20 can be inserted into the sleeve 30. The blocking hose 10 bends during this process, and after the insert tube 20 is inserted into the sleeve 30, it ultimately forms a ring structure surrounding the blocking position. By inserting the insert tube 20 into the sleeve 30, only an insertion and removal action is needed to form the ring structure or disconnect it, making the operation convenient.
[0027] Of course, after the insert tube 20 is inserted into the sleeve 30, a sealed fit can be formed to prevent gas from being introduced into the blocking hose 10, thus preventing air leakage at the insertion position.
[0028] Specifically, a limiting protrusion 21 can be provided on the outer wall of the insertion tube 20, and a limiting groove 31 can be provided on the inner wall of the sleeve 30. After the insertion tube 20 is inserted into the sleeve 30, the limiting protrusion 21 can be engaged with the limiting groove 31 to prevent loosening after insertion.
[0029] It should be noted that the aforementioned limiting ring 21 can be selected as a sealing ring fitted onto the outer wall of the insert tube 20. After the insert tube 20 is inserted, the sealing ring deforms and squeezes into the limiting groove 31, thus achieving a seal after insertion and increasing surface friction to further prevent loosening. Alternatively, the limiting ring 21 can be formed by directly machining a ribbed structure onto the outer wall of the insert tube 20, and then a sealing ring can be fitted onto the limiting ring 21 or inserted into the limiting groove 31 to achieve both sealing and limiting after insertion. The specific method can be selected according to actual needs.
[0030] Furthermore, the end of the insertion tube 20 away from the first end is provided with a guide slope 22, which can form a pointed structure at the end of the insertion tube 20, making it easier to guide the insertion of the insertion tube 20 and making the operation process more convenient and smooth.
[0031] Furthermore, a guide channel 12 can be provided inside the first and second ends; the inner diameter of the guide channel 12 gradually decreases from the inside to the outside, so that after the blocking action is completed, the guide channel 12 can guide the gas inside to be discharged through the insert tubes 20 and sleeves 30 at both ends. At the same time, since the inner diameter of the guide channel 12 is smaller at the inner end, the gas is not easily discharged during the inflation process.
[0032] Furthermore, in this embodiment, the elastic support 40 is a spring as in the prior art. The spring passes through the blocking hose 10 and is located between the first end and the second end. Since the spring is formed by multiple spring coils connected to each other, when the blocking hose 10 forms a ring structure, the spring coils at various positions inside can separate and provide support at various positions of the blocking hose 10 as the blocking hose 10 bends, resulting in a relatively uniform distribution of support force.
[0033] Furthermore, the air inlet is connected to an air guide bend, the inner diameter of which is smaller than the inner diameter of the blocking hose 10. During the air introduction process, the air guide bend is less prone to leakage due to its smaller inner diameter bend structure.
[0034] Furthermore, the blocking hose 10 is a silicone hose. The blocking hose 10 made of silicone hose is more gentle during the blocking process and is less likely to cause damage to the blocking position.
[0035] Based on the structure of the first connector and the second connector being the insert tube 20 and the sleeve 30, the insert tube 20 and the sleeve 30 can be made of hard plastic material. In this way, the first end and the second end of the silicone hose used as the blocking hose 10 can be directly elastically deformed and wrapped around the outside of the insert tube 20 and the sleeve 30, and then glued and sealed, which makes the connection convenient.
[0036] For those skilled in the art, various other corresponding changes and modifications can be made based on the technical solutions and concepts described above, and all such changes and modifications should fall within the protection scope of the claims of this utility model.
Claims
1. A device for blocking hepatic portal blood flow, characterized in that, The device includes a blocking hose, an elastic support, a first connector, and a second connector. The blocking hose has a first end and a second end that are opposite to each other. The first connector is connected to the first end, and the second connector is connected to the second end. The second connector and the first connector are detachably connected to form a ring structure. The elastic support is disposed inside the blocking hose and supports the blocking hose inside the blocking hose. The blocking hose is provided with an air guide hole for guiding gas into the blocking hose to inflate the blocking hose.
2. The device for blocking hepatic portal blood flow according to claim 1, characterized in that, The first connector is a insert tube, and the second connector is a sleeve. The insert tube is used to be inserted into the sleeve and sealed.
3. The device for blocking hepatic portal blood flow according to claim 2, characterized in that, The outer wall of the insert tube is provided with a limiting protrusion; the inner wall of the sleeve is provided with a limiting groove; the limiting protrusion is used to engage with the limiting groove after the insert tube is inserted into the sleeve.
4. The device for blocking hepatic portal blood flow according to claim 2, characterized in that, The end of the insertion tube away from the first end is provided with a guide bevel.
5. The device for blocking hepatic hilum blood flow according to any one of claims 1-4, characterized in that, The first end and the second end are provided with guide channels inside; the inner diameter of the guide channels gradually decreases from the inside to the outside.
6. The device for blocking hepatic hilum blood flow according to any one of claims 1-4, characterized in that, The elastic support is a spring, which passes through the blocking hose and is located between the first end and the second end.
7. The device for blocking hepatic hilum blood flow according to any one of claims 1-4, characterized in that, The air guide hole is connected to an air guide bend; the inner diameter of the air guide bend is smaller than the inner diameter of the blocking hose.
8. The device for blocking hepatic hilum blood flow according to any one of claims 1-4, characterized in that, The blocking hose is a silicone hose.