A hepatic portal occluder

Abstract

The application relates to the technical field of hepatic portal occluders, and provides a hepatic portal occluder which comprises an occluder body, a fixing hole part, a through hole part, a clamping part and a plurality of guide grooves, the occluder body has opposite proximal ends and distal ends in the length direction and a bending direction perpendicular to the length direction, the fixing hole part is arranged through the proximal end along the bending direction, the through hole part is arranged at the distal end, the through hole part is used for penetrating through the fixing hole part, the clamping part is arranged between the fixing hole part and the through hole part, the clamping part is used for interference fit with the fixing hole part, the plurality of guide grooves are arranged on the clamping part along directions perpendicular to the length direction, and the plurality of guide grooves are arranged at intervals along the length direction. The plurality of guide grooves arranged on the occluder body can greatly reduce the compression degree of the parts in the centripetal direction of the occluder body when the occluder body is bent, so that the local stress on the cross section of the occluder body is relatively uniform, and the service life of the occluder body is prolonged.

Description

Technical Field

[0001] This application relates to the field of hepatic portal blocker technology, and more particularly to a hepatic portal blocker. Background Technology

[0002] A hepatic portal occluder is a medical device used in liver surgery. It reduces intraoperative bleeding and the need for blood transfusions by controlling blood flow to the liver, thereby improving surgical safety and success rates. Its basic principle is to temporarily block blood flow to the liver, causing ischemia and hypoxia in the liver tissue for a period of time, thus reducing intraoperative bleeding. The application of hepatic portal occluders is also common in laparoscopic surgery. These are usually simple, homemade devices or specialized clamps used to perform total hepatic blood flow occlusion under laparoscopy. This method is simple and easy to perform, and is the most commonly used means of controlling bleeding in liver resection, applicable to almost all types of liver resection.

[0003] Existing hepatic hilum occluders generally have smooth and flat surfaces, resulting in low friction between the end passing through the fixing hole and the occluder, making them prone to detachment and hindering slippage when fixed to blood vessels. Patent CN113288308A discloses a hepatic hilum occluder band that increases friction between the band body and the fixing hole by creating damping holes on the outer wall of the band body, preventing detachment. However, when bent, the centripetal portion is compressed, leading to excessive local stress concentration on the cross-section, which can easily cause breakage and affect its service life. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this application is to provide a hepatic portal blocker, which aims to solve the disadvantage of excessive local stress concentration in the use of existing hepatic portal blockers.

[0005] The technical solution adopted by this application to solve the technical problem is as follows: a hepatic hilum blocker, comprising: a blocker body, wherein the blocker body has a proximal end and a distal end opposite to each other in the length direction;

[0006] A fixing hole is provided through the proximal end along the bending direction, wherein the bending direction is perpendicular to the length direction;

[0007] A perforated portion is provided at the distal end, and the cross-sectional area of ​​the perforated portion gradually decreases in the direction away from the proximal end. The perforated portion is used to pass through the fixing hole portion.

[0008] A snap-fit ​​portion is provided between the fixing hole portion and the through hole portion, and the snap-fit ​​portion is used to have an interference fit with the fixing hole portion;

[0009] A plurality of guide grooves are provided on the snap-fit ​​portion, and the plurality of guide grooves are provided at intervals along the length direction.

[0010] Furthermore, the guide groove includes: a plurality of first bending grooves, the plurality of first bending grooves being respectively disposed on the snap-fit ​​portion along a direction perpendicular to the length direction and the bending direction, and the plurality of first bending grooves being spaced apart along the length direction;

[0011] A plurality of second bending grooves are respectively disposed on the snap-fit ​​portion along the bending direction, and the plurality of second bending grooves are spaced apart along the length direction.

[0012] Furthermore, several first bending grooves and several second bending grooves are arranged alternately.

[0013] Furthermore, the cross-sectional area of ​​the guide groove gradually increases along the direction in which its opening faces outward.

[0014] Furthermore, the outer surface of the blocker body is provided with a yellow covering layer.

[0015] Furthermore, the hepatic portal blocker also includes an electrical cavity disposed within the blocker body;

[0016] A flexible circuit board disposed within the electrical cavity;

[0017] A timing module, wherein the timing module is disposed on the flexible circuit board;

[0018] A prompting module is disposed on the flexible circuit board and is used to issue a prompt after a preset time.

[0019] Furthermore, the prompting module includes a vibration module disposed on the flexible circuit board, which is used to issue a prompt by vibration after a preset time.

[0020] Furthermore, the hepatic hilum blocker also includes a light guide, wherein the blocker body is a light-transmitting blocker body, and the light guide is disposed on the blocker body;

[0021] The prompting module includes a light-emitting module disposed on the flexible circuit board, which is used to emit light that illuminates the light guide portion.

[0022] Furthermore, the hepatic portal blocker also includes a battery module, which is disposed on the flexible circuit board;

[0023] A wireless charging module is disposed on the flexible circuit board and is used to charge the battery module.

[0024] Furthermore, the hepatic portal blocker also includes a communication module, which is disposed on the flexible circuit board and is used to connect to a wireless terminal.

[0025] Compared with the prior art, this utility model, by setting several guide grooves on the blocker body, can greatly reduce the degree of compression in the centripetal direction of the blocker body when it is bent, thereby making the local stress on the cross section of the blocker body more uniform and extending the service life of the blocker body. Attached Figure Description

[0026] 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.

[0027] Figure 1 This is a schematic diagram of the overall structure of the hepatic portal blocker provided in this embodiment;

[0028] Figure 2 This is the embodiment. Figure 1 A sectional view.

[0029] In the figure: 110, fixing hole; 120, snap-fit ​​part; 121, guide groove; 121a, first bending groove; 121b, second bending groove; 130, through hole; 140, electrical cavity; 200, flexible circuit board; 210, timing module; 220, prompting module; 221, vibration module; 222, light-emitting module; 230, communication module; 310, length direction; 320, bending direction; 410, proximal end; 420, distal end. Detailed Implementation

[0030] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0031] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application 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, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] Furthermore, the technical features involved in the different embodiments of the present invention described above can be combined with each other as long as they do not conflict with each other.

[0034] This utility model provides, for example Figures 1 to 2 The hepatic portal occluder shown is designed to address the drawback of existing hepatic portal occluders where excessive local stress concentration occurs during use.

[0035] This hepatic hilum blocker mainly includes: a blocker body, a fixing hole 110, a perforation part 130, a snap-fit ​​part 120, and several guide grooves 121.

[0036] The blocker body has a proximal end 410 and a distal end 420 opposite each other in the length direction 310, and a bending direction 320 perpendicular to the length direction 310; a fixing hole 110 is provided through the proximal end 410 along the bending direction 320, and a through hole 130 is provided in the distal end 420. The cross-sectional area of ​​the through hole 130 gradually decreases in the direction away from the proximal end 410, and the through hole 130 is used to pass through the fixing hole 110; a snap-fit ​​part 120 is provided between the fixing hole 110 and the through hole 130, and the snap-fit ​​part 120 is used to interfere with the fixing hole 110.

[0037] Specifically, the blocker body is rod-shaped, and the length of the blocker body is 310 mm. Figures 1 to 2 The device is set vertically. In actual use, the blocker body is wrapped around the target blood vessel, so that both the proximal end 410 and the distal end 420 are bent along the bending direction 320. During this process, the perforated part 130 and the fixing hole part 110 gradually approach each other. Then, the perforated part 130 is clamped by passing through the fixing hole part 110 with tweezers or forceps. Finally, the tweezers or forceps are pulled back and the perforated part 130 is passed through the fixing hole part 110 (the cross-sectional area of ​​the perforated part 130 gradually decreases in the direction away from the proximal end 410, which facilitates the perforated part 130 to pass through the fixing hole part 110). Due to the interference fit between the snap-fit ​​part 120 and the fixing hole part 110, the blocker body is fitted and fixed on the target blood vessel.

[0038] A plurality of guide grooves 121 are respectively provided on the snap-fit ​​portion 120 in a direction perpendicular to the length direction 310, and the plurality of guide grooves 121 are spaced apart along the length direction 310.

[0039] Specifically, guide groove 121, such as Figures 1 to 2 With its horizontal orientation, when the blocker body bends along the opening direction of the guide groove 121, the sidewalls of the guide groove 121 gradually approach each other until they come into contact, generating a larger force and acting as a buffer, thus reducing the force on the centripetal part of the blocker body. In contrast, when a conventional blocker body is bent, since there is no guide groove 121 to act as a buffer, the force on the centripetal part of this application is smaller than that on the conventional blocker body at the same bending angle, which can effectively extend the service life of the blocker body.

[0040] Existing hepatic hilum occluders generally have smooth and flat surfaces, resulting in low friction between the end passing through the fixing hole and the occluder, making them prone to detachment and hindering slippage when fixed to blood vessels. Patent CN113288308A discloses a hepatic hilum occluder band that increases friction between the band body and the fixing hole by creating damping holes on the outer wall of the band body, preventing detachment. However, when bent, the centripetal portion is compressed, leading to excessive local stress concentration on the cross-section, which can easily cause breakage and affect its service life.

[0041] By providing several guide grooves 121 on the blocker body, this utility model can greatly reduce the degree of compression in the centripetal direction of the blocker body when it is bent, thereby making the local stress on the cross section of the blocker body more uniform and extending the service life of the blocker body.

[0042] In some embodiments, such as Figures 1 to 2As shown, the guide groove 121 includes: a plurality of first bending grooves 121a, which are respectively disposed on the snap-fit ​​portion 120 along the direction perpendicular to the length direction 310 and the bending direction 320, and the plurality of first bending grooves 121a are spaced apart along the length direction 310.

[0043] A plurality of second bending grooves 121b are respectively disposed on the snap-fit ​​portion 120 along the bending direction 320, and the plurality of second bending grooves 121b are spaced apart along the length direction 310.

[0044] Specifically, by setting several first bending grooves 121a, the force on the centripetal part when the blocker body is bent can be reduced, and the bending performance of the blocker body in the bending direction 320 can be improved; by setting several second bending grooves 121b, the bending performance of the blocker body in the direction perpendicular to the length direction 310 and the bending direction 320 can be improved. Therefore, by setting several first bending grooves 121a and several second bending grooves 121b, the bending performance of the blocker body can be improved, making it easier for medical staff to bend the blocker body and effectively extending the service life of the blocker body.

[0045] In some embodiments, such as Figures 1 to 2 As shown, a plurality of first bending grooves 121a and a plurality of second bending grooves 121b are arranged alternately.

[0046] Specifically, if one of the first bending grooves 121a and one of the second bending grooves 121b are set on the same horizontal plane, the interval between the first bending groove 121a and the second bending groove 121b will be small, which will easily cause the part between the first bending groove 121a and the second bending groove 121b to break when the blocker body is bent, greatly reducing the structural strength of the blocker body.

[0047] In some embodiments, such as Figures 1 to 2 As shown, the cross-sectional area of ​​the guide groove 121 gradually increases in the direction outward from its opening, that is, the cross-sectional area of ​​the guide groove 121 gradually increases in the direction from the bottom of the guide groove 121 toward the opening of the guide groove 121.

[0048] Specifically, the guide groove 121 is funnel-shaped. When the blocker body is bent, the guide groove 121, which has several openings facing the bending direction 320, would have a significantly different contact time at its two ends along the bending direction 320 if it were rectangular. By making the guide groove 121 funnel-shaped, the contact time at both ends along the bending direction 320 is made more similar when the blocker body is bent, thereby reducing excessive stress concentration on the cross-section of the blocker body and extending its service life.

[0049] In some embodiments, the outer surface of the blocker body is provided with a yellow coating. The yellow coating differs significantly in color from blood, making it more noticeable and easily detectable upon contact with blood. Preferably, the outer surface of the blocker body is made of a hydrophobic material, which does not easily attract blood.

[0050] In some embodiments, such as Figure 2 As shown, the hepatic portal blocker also includes an electrical cavity 140, which is disposed within the blocker body;

[0051] Flexible circuit board 200 is disposed within electrical cavity 140;

[0052] A timing module 210 is disposed on a flexible circuit board 200.

[0053] The prompt module 220 is disposed on the flexible circuit board 200 and is used to issue a prompt after a preset time.

[0054] Specifically, a normal liver occlusion time of 20-30 minutes is considered safe. However, for patients with cirrhosis, the occlusion time needs to be shortened as much as possible. If a single occlusion cannot complete the surgery, multiple occlusions at intervals can be considered. By setting a timing module 210 and a prompting module 220, medical staff can know the surgery time without operating other timers (which could lead to occupational exposure or contamination), thus avoiding accidents caused by prolonged surgery. Preferably, the flexible circuit board 200 and other components are matched with the electrical cavity 140, allowing the occluder body to bend along with it. It should be noted that miniaturization of electronic components can minimize the impact on the bending capability of the occluder body.

[0055] In some embodiments, such as Figure 2As shown, the prompting module 220 includes a vibration module 221, which is disposed on the flexible circuit board 200. The vibration module 221 is used to issue a prompt by vibration after a preset time. Preferably, without affecting the patient's health and safety, the vibration module 221 can emit sound by high-frequency vibration at an appropriate power to prompt medical staff.

[0056] In some embodiments, such as Figure 2 As shown, the hepatic hilum blocker also includes: a light guide, the blocker body is a light-transmitting blocker body, and the light guide is disposed on the blocker body;

[0057] The prompt module 220 includes a light-emitting module 222, which is disposed on the flexible circuit board 200 and is used to emit light that illuminates the light guide portion.

[0058] Preferably, the light-emitting module 222 can emit yellow light with strong penetrability, so that the blocker body emits light locally or as a whole, thus playing a better role in prompting.

[0059] In some embodiments, the hepatic portal blocker further includes a battery module disposed on the flexible circuit board 200, the battery module being used to power various electronic components;

[0060] A wireless charging module is mounted on the flexible circuit board 200 and is used to charge the battery module.

[0061] In some embodiments, such as Figure 2 As shown, the hepatic portal blocker also includes a communication module 230, which is disposed on the flexible circuit board 200 and is used to connect to a wireless terminal.

[0062] Preferably, it also includes a button and a user terminal. Pressing the button can start the timer, stop the timer, and provide an end reminder. The blocking time and number of blocking attempts can be sent to the user terminal for automatic recording via the communication module 230 (the data on blocking time and number of blocking attempts are usually recorded in the medical record by the doctor on the operating table after the operation, and are easily forgotten).

[0063] In summary, a hepatic hilum occluder is provided, comprising an occluder body, a fixing hole, a perforation, a locking part, and several guide grooves. The occluder body has opposing proximal and distal ends along its length and a bending direction perpendicular to the length direction. The fixing hole is disposed through the proximal end along the bending direction, and the perforation is disposed at the distal end, passing through the fixing hole. The locking part is disposed between the fixing hole and the perforation, and is used for an interference fit with the fixing hole. Several guide grooves are respectively disposed on the locking part along a direction perpendicular to the length direction, and the guide grooves are spaced apart along the length direction. By providing several guide grooves on the occluder body, this invention can greatly reduce the degree of compression in the centripetal direction of the occluder body when it bends, thereby making the local stress on the cross-section of the occluder body more uniform and extending the service life of the occluder body.

[0064] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A hepatic hilum blocker, characterized in that, include: The blocker body has opposing proximal and distal ends in the length direction; A fixing hole is provided through the proximal end along the bending direction, wherein the bending direction is perpendicular to the length direction; A perforated portion is provided at the distal end, and the cross-sectional area of ​​the perforated portion gradually decreases in the direction away from the proximal end. The perforated portion is used to pass through the fixing hole portion. A snap-fit ​​portion is provided between the fixing hole portion and the through hole portion, and the snap-fit ​​portion is used to have an interference fit with the fixing hole portion; A plurality of guide grooves are provided on the snap-fit ​​portion, and the plurality of guide grooves are provided at intervals along the length direction.

2. The hepatic portal blocker according to claim 1, characterized in that, The guide groove includes: a plurality of first bending grooves, the plurality of first bending grooves being respectively disposed on the snap-fit ​​portion along a direction perpendicular to the length direction and the bending direction, and the plurality of first bending grooves being spaced apart along the length direction; A plurality of second bending grooves are respectively disposed on the snap-fit ​​portion along the bending direction, and the plurality of second bending grooves are spaced apart along the length direction.

3. The hepatic hilum blocker according to claim 2, characterized in that, Several first bending grooves and several second bending grooves are arranged alternately.

4. The hepatic portal blocker according to claim 1, characterized in that, The cross-sectional area of ​​the guide groove gradually increases along the direction in which its opening faces outward.

5. The hepatic hilum blocker according to claim 1, characterized in that, The outer surface of the blocker body is covered with a yellow coating.

6. The hepatic hilum blocker according to any one of claims 1-5, characterized in that, The hepatic portal blocker further includes an electrical cavity disposed within the blocker body; A flexible circuit board disposed within the electrical cavity; A timing module, wherein the timing module is disposed on the flexible circuit board; A prompting module is disposed on the flexible circuit board and is used to issue a prompt after a preset time.

7. The hepatic hilum blocker according to claim 6, characterized in that, The prompting module includes a vibration module disposed on the flexible circuit board, which is used to issue a prompt by vibration after a preset time.

8. The hepatic hilum blocker according to claim 6, characterized in that, The hepatic hilum blocker further includes a light guide, wherein the blocker body is a light-transmitting blocker body, and the light guide is disposed on the blocker body; The prompting module includes a light-emitting module disposed on the flexible circuit board, which is used to emit light that illuminates the light guide portion.

9. The hepatic portal blocker according to claim 6, characterized in that, The hepatic portal blocker further includes a battery module, which is disposed on the flexible circuit board. A wireless charging module is disposed on the flexible circuit board and is used to charge the battery module.

10. The hepatic portal blocker according to claim 6, characterized in that, The hepatic portal blocker further includes a communication module, which is disposed on the flexible circuit board and is used to connect to a wireless terminal.

Images