Hepatic portal blocker

Abstract

The present invention provides a portal blocker, comprising: a mounting block, a tether being provided at the bottom thereof, a hook body being slidably provided at one side of the mounting block, an elastic component being provided on the mounting block, the elastic component being connected to the hook body and being able to provide an elastic force to move the hook body away from the bottom of the mounting block; a drive box being installed at the top of the mounting block, a drive column being slidably provided in the drive box, the bottom end of the drive column being connected to the hook body, and the back and forth sliding drive column being able to move the hook body in a direction close to or away from the bottom of the mounting block; and a timing blocking mechanism being installed in the drive box and being used for timing control of the back and forth sliding of the drive column. The present invention utilizes the timing blocking mechanism, by rotating each stud to adjust the rise and fall of the corresponding push block, and cooperates with the drive column to drive the hook body to slide up and down based on the elastic cover body to adjust the time interval of portal blockage and release, and can formulate the portal blockage time period in a targeted manner according to the operation situation and the patient's physical condition, and can automatically block and release the portal according to the pre-adjusted time interval.

Description

Technical Field

[0001] The present invention relates to the field of portal obstruction instruments, and in particular to a portal obstructor. Background Art

[0002] Portal occlusion refers to an operation technique to reduce liver bleeding and block the blood flow into the liver during surgery. During the operation, the duration of portal occlusion should be controlled. If it is too long, it may cause ischemic necrosis of normal liver parenchyma and increase the risk of acute liver failure after surgery. Too long of an occlusion time will also greatly affect the return of intestinal blood flow, thereby causing damage to the intestinal mucosal barrier and endotoxemia caused by intestinal bacterial translocation. Therefore, it is particularly important to control the duration of portal occlusion.

[0003] At present, during surgery, the patient's liver hilum is usually tied with a bandage and clamped with surgical forceps. After a period of time, the surgical forceps are loosened to block the circulation at the liver hilum. This method requires medical staff to pay attention to the blocking time at all times and repeatedly perform the blocking operation manually. The process is cumbersome and it is easy to forget the time, resulting in insufficient or excessive liver hilum blocking time. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention proposes a portal vein blocker to solve the problem that medical staff are currently required to repeatedly block the portal vein and it is difficult to effectively control the time of portal vein blocking.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] The hepatic portal blocker provided by the present invention comprises:

[0007] A mounting block, a tether is provided at the bottom thereof, and a hook body is slidably provided on one side of the mounting block, an elastic component is also provided on the mounting block, the elastic component is connected to the hook body and can provide an elastic force to move the hook body away from the bottom of the mounting block, a through loop is provided on one side of the bottom end of the mounting block, and the connection end of the tether on the mounting block is close to the through loop;

[0008] A drive box is mounted on the top of the mounting block, a drive column is slidably disposed in the drive box, the bottom end of the drive column slides through the bottom of the drive box and is connected to the hook body, and sliding the drive column back and forth can move the hook body in a direction close to or away from the bottom of the mounting block; and

[0009] The timing blocking mechanism is installed in the driving box and is used for timing controlling the reciprocating sliding of the driving column.

[0010] Furthermore, the timing blocking mechanism includes a motor box, a rotating column, a cover body and a push block, the motor box is installed at the bottom of the inner cavity of the drive box and the driving shaft of the motor box is axially connected to the bottom end of the rotating column upward, the top of the rotating column is connected to the bottom middle of the cover body, the cover body movably passes through the outside of the drive box, a ring is arranged around the edge bottom of the cover body, an elastic cover body is arranged between the bottom of the ring and the rotating column, and a closed space is formed between the elastic cover body, the ring, the cover body and the rotating column, and a plurality of partitions are evenly distributed around the circumference of the rotating column in the closed space, and a push block is movably arranged between two adjacent partitions, the top of each push block is rotatably connected to a stud, and the top of each stud passes through the top of the cover body and is threadedly connected to the cover body.

[0011] Furthermore, a roller is arranged on the top end of the driving column.

[0012] Furthermore, a guide tube communicating with the outside is provided at the bottom of the inner cavity of the drive box, and the drive column is slidably installed in the guide tube.

[0013] Furthermore, a T-shaped guide rail is provided on the top of the mounting block, a slide groove adapted to the T-shaped guide rail is provided on one side of the bottom of the drive box, a slot is provided on one side of the hook body, a pin adapted to the slot is provided on one side of the bottom end of the drive column, and the length direction of the T-shaped guide rail is parallel to the opening direction of the slot.

[0014] Furthermore, a magnetic component is provided at the inner end of the slide groove, and a magnetic component is also provided at the end of the T-shaped guide rail that contacts the inner end of the slide groove.

[0015] Furthermore, the tether is linearly and evenly distributed with a plurality of hanging grooves, and the hook body is provided with a through groove.

[0016] Furthermore, the elastic component includes a connecting block and a spring. The connecting block is arranged on a side of the top end of the mounting block facing the hook body, and the spring is installed between the connecting block and the hook body.

[0017] Furthermore, a sliding groove is provided on the side wall of the mounting block, and one end of the hook body is slidably mounted in the sliding groove.

[0018] It can be seen from the above technical scheme that the portal blocker provided by the present invention utilizes a timing blocking mechanism to adjust the rise and fall of the corresponding push block by rotating each stud, and cooperates with the driving column to drive the hook body to slide up and down based on the elastic cover body to adjust the time interval of portal blockage and release. The portal blockage time period can be specifically formulated according to the specific surgical situation and the patient's physical condition, and the portal blockage and release can be automatically performed according to the pre-adjusted time interval, eliminating the trouble of repeated manual blocking by medical staff, and can more accurately grasp the time of portal blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation of the present invention, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0020] Figure 1 It is a schematic diagram of the main structure of a liver portal blocker in one embodiment of the present invention;

[0021] Figure 2 It is a cross-sectional view of a front structural schematic diagram of a driving box and a timing blocking mechanism in one embodiment of a hepatic portal blocker of the present invention;

[0022] Figure 3 A cross-sectional view of a schematic diagram of the main structure of a mounting block in one embodiment of a hepatic portal blocker of the present invention;

[0023] Figure 4 for Figure 1 Sectional view at AA in the middle;

[0024] Figure 5 It is a partial structural schematic diagram of a combination of a T-shaped guide rail and a slide groove in one embodiment of the hepatic portal blocker of the present invention;

[0025] Figure 6 It is a schematic diagram of the partial structure of the tether in one embodiment of the hepatic portal occluder of the present invention;

[0026] Reference numerals:

[0027] Mounting block 1, tether 11, hanging slot 111, hook body 12, slot 121, through slot 122, elastic component 13, connecting block 131, spring 132, T-shaped guide rail 14, sliding slot 15, through ring 16;

[0028] Drive box 2, drive column 21, roller 211, latch 212, guide tube 22, slide slot 23;

[0029] Timing blocking mechanism 3, motor box 31, rotating column 32, cover body 33, push block 34, surrounding ring 35, elastic cover body 36, partition plate 37, stud 38. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the invention is not limited by the specific implementation disclosed below.

[0031] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0033] like Figure 1-6 As shown, the portal obstructor provided in this embodiment includes a mounting block 1 , a drive box 2 and a timing blocking mechanism 3 .

[0034] See also Figure 1 and Figure 3 , a tether 11 is provided at the bottom of the mounting block 1, and a hook body 12 is slidably provided on one side of the mounting block 1, and the tether 11 can be hung on the hook body 12. Specifically, a sliding groove 15 is provided on the side wall of the mounting block 1, and the two ends of the sliding groove 15 extend toward the top and the bottom of the mounting block 1 respectively. One end of the hook body 12 is slidably installed in the sliding groove 15, and the sliding groove 15 is conducive to providing a movement guide for the hook body 12. When the tether 11 is hung on the hook body 12, if the hook body 12 slides toward the bottom of the mounting block 1, the tether 11 below will be loosened, and if the hook body 12 slides toward the top of the mounting block 1, the tether 11 below will be tightened. An elastic component 13 is also provided on the mounting block 1, and the elastic component 13 is connected to the hook body 12 and can provide an elastic force to move the hook body 12 away from the bottom of the mounting block 1. Specifically, the elastic component 13 includes a connecting block 131 and a spring 132. The connecting block 131 is arranged on the top side of the mounting block 1 facing the hook body 12. The spring 132 is installed between the connecting block 131 and the hook body 12. In the initial state, the hook body 12 can be limited by the elastic component 13 to prevent the hook body 12 from moving.

[0035] In one embodiment, a through loop 16 is provided on one side of the bottom end of the mounting block 1, and the connection end of the tether 11 on the mounting block 1 is close to the through loop 16, which is beneficial to reduce the gap between the tether 11 and the hepatic hilum, so that the tether 11 can be fully wrapped around the hepatic hilum.

[0036] like Figure 6As shown, preferably, a plurality of hanging grooves 111 are evenly distributed linearly on the tether 11. In specific use, after the liver portal is fully tightened with the tether 11, the tether 11 is pulled upwards and the hanging grooves 111 at appropriate positions on the tether 11 are selected to be hung on the hook body 12, so that the tether 11 can still maintain the liver portal blockage after being hung on the hook body 12.

[0037] When the free end of the tether 11 is too long, it will block the field of vision and affect the operation. Figure 3 As shown, further, a through slot 122 is provided on the hook body 12. When the tether 11 is hung on the hook body 12, the hung part of the tether 11 can be tilted outward, and the free end of the tether 11 can be folded inward and inserted into the through slot 122, so that the free end of the tether 11 can be collected into the inner side of the device.

[0038] During the blocking process, if the force of the tether 11 wrapped around the liver hilum is too large, it will damage the blood vessels, while if the force is too small, the blocking effect will be poor. Therefore, it is necessary to monitor the force of the tether 11 wrapped around the liver hilum at all times. In one embodiment, a pressure detector (not shown) is provided on the hook body 12. The pressure detector has a screen, which can view the pressure value in real time during the operation, and the pressure sensor of the pressure detector is provided on the upper side of the hook body 12. When the tether 11 is hung on the hook body 12, it will contact the pressure sensor. As the hook body 12 moves, the pressure when the tether 11 contacts the pressure sensor will change, thereby transmitting the pressure information to the pressure detector through the pressure sensor and displaying it on the screen. The pressure monitor can use conventional equipment sold on the market, so there is no need to elaborate too much.

[0039] See also Figure 1 and Figure 2 The drive box 2 is installed on the top of the mounting block 1. A drive column 21 is slidably arranged inside the drive box 2. The bottom end of the drive column 21 slides through the bottom of the drive box 2 and is connected to the hook body 12. Sliding the drive column 21 back and forth can move the hook body 12 in a direction close to or away from the bottom of the mounting block 1.

[0040] Preferably, a guide tube 22 communicating with the outside is provided at the bottom of the inner cavity of the drive box 2. The pipeline direction of the guide tube 22 is the same as the sliding direction of the hook body 12. The drive column 21 is slidably installed in the guide tube 22, which is beneficial to provide sliding guidance for the drive column 21.

[0041] See also Figure 2 , Figure 3 and Figure 5In one embodiment, the mounting block 1 and the drive box 2 are detachably connected. Specifically, a T-shaped guide rail 14 is provided on the top of the mounting block 1, and a slide groove 23 adapted to the T-shaped guide rail 14 is provided on one side of the bottom of the drive box 2, and the T-shaped guide rail 14 can be slidably inserted into the slide groove 23; a slot 121 is provided on one side of the hook body 12, and a latch 212 adapted to the slot 121 is provided on one side of the bottom end of the drive column 21, and the latch 212 can be slidably inserted into the slot 121. It should be noted that the length direction of the T-shaped guide rail 14 is parallel to the opening direction of the slot 121. When the T-shaped guide rail 14 is slidably inserted into the slide groove 23, the connection between the mounting block 1 and the drive box 2 is realized, and at the same time, the latch 212 will also be slidably inserted into the slot 121 to realize the connection between the drive column 21 and the hook body 12. In this embodiment, the liver portal can be blocked by the tether 11 on the mounting block 1 first, and the drive box 2 can be installed after the tether 11 is hung on the hook body 12, so that the medical staff can operate the tether 11 more flexibly.

[0042] Furthermore, a magnetic part is provided at the inner end of the slide groove 23, and a magnetic part is also provided at the end of the T-shaped guide rail 14 that contacts the inner end of the slide groove 23. When the T-shaped guide rail 14 is connected to the slide groove 23, the two ends are magnetically attracted to each other, which can prevent the mounting block 1 from being separated from the drive box 2.

[0043] In one embodiment, the outer corners of the mounting block 1 and the driving box 2 are arc-shaped to prevent damage to the patient's organs.

[0044] See also Figure 1 , Figure 2 and Figure 4 The timing blocking mechanism 3 is installed in the driving box 2, and is used for timing control of the reciprocating sliding of the driving column 21. Furthermore, the timing blocking mechanism 3 includes a motor box 31, a rotating column 32, a cover body 33 and a push block 34. The motor box 31 is installed at the bottom of the inner cavity of the drive box 2 and the drive shaft of the motor box 31 is axially connected to the bottom end of the rotating column 32 upward, the top of the rotating column 32 is connected to the middle of the bottom of the cover body 33, the top of the drive box 2 is open, and the cover body 33 is movably passed out of the drive box 2, and a ring 35 is arranged around the bottom of the edge of the cover body 33, and an elastic cover body 36 is arranged between the bottom of the ring 35 and the rotating column 32. A closed space is formed between the elastic cover body 36, the ring 35, the cover body 33 and the rotating column 32, and a plurality of partitions 37 are evenly distributed around the circumference of the rotating column 32 in the closed space, and a push block 34 is movably arranged between two adjacent partitions 37, and a stud 38 is rotatably connected to the top of each push block 34, and the top of each stud 38 passes through the top of the cover body 33 and is threadedly connected to the cover body 33.

[0045] The top of the driving column 21 is located below the elastic cover 36, and the driving column 21 is connected to the hook body 12, and is lifted up by the elastic force of the elastic component 13 to abut against the elastic cover 36. Preferably, in order to reduce the friction between the driving column 21 and the elastic cover 36, a roller 211 is provided at the top of the driving column 21.

[0046] During specific use, the partition 37 divides the spatial circumference into multiple equal parts, so each push block 34 occupies one part. By rotating a certain number and position of the studs 38 as needed, the corresponding push block 34 can be pushed toward the bottom of the drive box 2. The elastic cover body 36 can be made of elastic rubber with good ductility. The pushed push block 34 will extend the elastic cover body 36 below, so that the elastic cover body 36 between the pushed push block 34 and the non-pushed push block 34 forms a slope with an inclined transition, thereby making the elastic cover body 36 on the top of the drive column 21 form an undulating path. When the motor box 31 is started to rotate its drive shaft, the drive column 21 can be pushed to slide upward or downward.

[0047] It should be noted that in order to adapt to the duration of the operation and the duration of the hepatic portal occlusion, the speed of the drive shaft of the motor box 31 should not be too fast, preferably 1 revolution per hour, and the speed of the drive shaft of the motor box 31 can also be changed to 1 revolution per two hours or other speeds as needed, and the specific speed requirements depend on the actual situation. The motor box 31 can use an ultra-low frequency induction motor that is already sold on the market, which is a conventional technology and will not be described in detail here.

[0048] The maximum time for blocking the portal vein depends on the patient's basic physical condition, the scope of surgical resection, etc., so the specific blocking time will vary, but it is usually a multiple of 5 minutes. Therefore, further, taking the driving shaft speed of the motor box 31 as 1 revolution per hour, the number of push blocks 34 is set to 12, so that the time for the driving column 21 to pass under each area where the push block 34 is located is 5 minutes, and each stud 38 is rotated according to the specific situation of the operation to adjust the high area and the low area of ​​the push block 34. For other speeds, the number of push blocks 34 can be changed to ensure that the time for the driving column 21 to pass under each area where the push block 34 is located is 5 minutes.

[0049] It should be noted that the above-mentioned change in the driving shaft speed of the motor box 31 and the change in the number of push blocks 34 can be achieved by configuring a plurality of different drive boxes 2, because in one embodiment, the drive box 2 is detachably connected to the mounting block 1, and different drive boxes 2 can be quickly replaced.

[0050] When the portal obstructor provided by the present invention is used, the tether 11 is firstly wrapped around the portal area and pulled out and tightened through the loop 16, and then the hanging groove 111 at a suitable position is selected to be hung on the hook body 12, and the excess free end of the tether 11 is passed inward through the through groove 122 and stored; according to the needs of the operation, a suitable drive box 2 is selected and slidably installed on the mounting block 1, so that the hook body 12 is connected to the drive column 21, and each rotating column 32 is rotated according to the operation situation, and the height of each pushing block 34 is adjusted to determine the time interval for the drive column 21 to slide upward and downward, and the motor box 31 can be started when in use.

[0051] The present invention utilizes the timing blocking mechanism 3 to adjust the rise and fall of the corresponding push block 34 by rotating each stud 38, and cooperates with the driving column 21 to drive the hook body 12 to slide up and down based on the elastic cover body 36 to adjust the time interval of the portal obstruction and release. The portal obstruction time period can be specifically formulated according to the specific surgical situation and the patient's physical condition, and the portal obstruction and release can be automatically performed according to the preset time interval, eliminating the trouble of repeated manual blocking by medical staff, and can more accurately grasp the time of portal obstruction.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the various embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. Portal blocker, It is characterized in that include: A mounting block, a tether is provided at the bottom thereof, and a hook body is slidably provided on one side of the mounting block, an elastic component is also provided on the mounting block, the elastic component is connected to the hook body and can provide an elastic force to move the hook body away from the bottom of the mounting block, a through loop is provided on one side of the bottom end of the mounting block, and the connection end of the tether on the mounting block is close to the through loop; A drive box is mounted on the top of the mounting block, a drive column is slidably disposed in the drive box, the bottom end of the drive column slides through the bottom of the drive box and is connected to the hook body, and sliding the drive column back and forth can move the hook body in a direction close to or away from the bottom of the mounting block; and A timing blocking mechanism is installed in the driving box and is used to control the reciprocating sliding of the driving column at a timing; The timing blocking mechanism includes a motor box, a rotating column, a cover body and a push block. The motor box is installed at the bottom of the inner cavity of the drive box, and the driving shaft of the motor box is axially connected to the bottom end of the rotating column upwards. The top of the rotating column is connected to the bottom middle of the cover body, and the cover body movably passes through the outside of the drive box. A ring is arranged around the bottom edge of the cover body, and an elastic cover body is arranged between the bottom of the ring and the rotating column. A closed space is formed between the elastic cover body, the ring, the cover body and the rotating column. A plurality of partitions are evenly distributed around the circumference of the rotating column in the closed space, and push blocks are movably arranged between two adjacent partitions. The top of each push block is rotatably connected to a stud, and the top of each stud passes through the top of the cover body and is threadedly connected to the cover body.

2. The portal occluder according to claim 1, It is characterized in that A roller is arranged on the top end of the driving column.

3. The portal occluder according to claim 1, It is characterized in that A guide tube communicating with the outside is arranged at the bottom of the inner cavity of the driving box, and the driving column is slidably installed in the guide tube.

4. The portal occluder according to claim 1, It is characterized in that A T-shaped guide rail is arranged on the top of the mounting block, a slide groove adapted to the T-shaped guide rail is opened on one side of the bottom of the drive box, a slot is opened on one side of the hook body, a pin adapted to the slot is arranged on one side of the bottom end of the drive column, and the length direction of the T-shaped guide rail is parallel to the opening direction of the slot.

5. The portal occluder according to claim 4, It is characterized in that The inner end of the slide groove is provided with a magnetic piece, and the end of the T-shaped guide rail that contacts the inner end of the slide groove is also provided with a magnetic piece.

6. The portal occluder according to claim 4, It is characterized in that The tether is linearly and evenly provided with a plurality of hanging grooves, and the hook body is provided with a through groove.

7. The portal occluder according to claim 1, It is characterized in that The elastic component comprises a connecting block and a spring. The connecting block is arranged on a side of the top end of the mounting block facing the hook body, and the spring is installed between the connecting block and the hook body.

8. The portal occluder according to claim 1, It is characterized in that A sliding groove is arranged on the side wall of the mounting block, and one end of the hook body is slidably mounted in the sliding groove.

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