A bile duct constrictor

Abstract

This application discloses a bile duct narrowing device, including a first clamp and a second clamp hinged together. Both the second clamp and the first clamp have free ends, and a clamping port is provided between the two free ends. The bile duct narrowing device also includes an adjustable support strap, one end of which is fixedly connected to the second clamp and the other end is slidably connected to the first clamp. A locking component for fixing the adjustable support strap is provided on the first clamp. The bile duct narrowing device also includes several closing components arranged sequentially along the axis of the bile duct. This application controls the size of the space used to accommodate the bile duct by adjusting the support strap, thereby squeezing the closed area out of the clamping port, achieving rapid and accurate separation of the closed and unclosed areas of the bile duct, which is beneficial to improving operational efficiency. Simultaneously, the bile duct narrowing device of this application can accurately mark the area for installing the closing components through the clamping port, which is beneficial to the rapid installation of the closing components and improves operational efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of biological experimental equipment, and in particular to a bile duct constrictor. Background Art

[0002] Mouse is a commonly used biological experimental animal. In the prior art, in order to explore the physiological effects of tissues such as bile ducts, the constriction method is often used for biological comparative experiments. During the operation in the prior art, part of the bile duct is manually pinched into a flat shape, and then the flat bile duct is closed by suturing, so that the flow area of ​​the bile duct is smaller than the co-flow area under normal circumstances, that is, the inner diameter of the bile duct is reduced by the above operation. However, the above operation not only requires the cooperation of multiple technicians, but also has the defect of low operating efficiency. Utility Model Content

[0003] The main purpose of the present application is to provide a bile duct constrictor, aiming to solve the defect of low operating efficiency in the prior art.

[0004] This application achieves the above objectives through the following technical solutions:

[0005] A bile duct constrictor comprises a first splint;

[0006] A second clamping plate, one end of which is hingedly connected to one end of the first clamping plate; the other ends of the second clamping plate and the first clamping plate are both free ends, and a clamping opening is provided between the two free ends;

[0007] An adjustable support belt, one end of which is fixedly connected to the second clamping plate, and the other end of which is slidably connected to the first clamping plate, and the first clamping plate is provided with a locking assembly for fixing the adjustable support belt;

[0008] A plurality of closing components are arranged in sequence along the axial direction of the bile duct.

[0009] Optionally, along the axial direction of the bile duct constrictor, a plug-in hole is further provided on the first splint, and a step hole is provided on the second splint. A plug-in rod adapted to the plug-in hole is slidably provided in the step hole, and a reset spring is also provided in the step hole. An extrusion plate is provided on the plug-in rod, and both ends of the reset spring respectively abut against the extrusion plate and the step surface of the step hole; a limit plate adapted to the second splint is also provided on the plug-in rod.

[0010] Optionally, a first through-slot is provided on the first splint, a second through-slot is provided on the second splint, a fixing assembly is provided on the second splint, one end of the adjustment support belt passes through the second through-slot and is connected to the fixing assembly, and the other end passes through the first through-slot and is connected to the locking assembly.

[0011] Optionally, a first adjusting roller and a second adjusting roller are rotatably arranged in the second insertion slot, and the adjusting support belt is connected to the locking assembly after passing between the first adjusting roller and the second adjusting roller.

[0012] Optionally, the fixing assembly includes a fixing groove and a plug-in plate, a limiting step is provided at one end of the plug-in plate, and a radial limiting plate adapted to the limiting step is provided on the fixing groove; a limiting assembly is also provided between the plug-in plate and the second clamping plate.

[0013] Optionally, the limiting assembly includes a limiting hook and a limiting rod that cooperate with each other, the limiting rod is arranged on the second clamping plate, and the limiting hook is rotatably connected to the plug-in board.

[0014] Optionally, the fixing component further includes an adhesive plate, on which a release paper is attached.

[0015] Optionally, the locking assembly includes a door frame installed on the first clamping plate, an extrusion roller is slidably arranged on the door frame, a locking rod is also threadedly connected to the door frame, a locking block is rotatably arranged at one end of the locking rod, and the locking block is fitted with the extrusion roller.

[0016] Optionally, the closing component includes an elastic clip, which is in a U-shaped structure, and two ends of the elastic clip are in contact with each other; and adjustment rods are provided at both ends of the elastic clip.

[0017] Optionally, an operating plate is provided at one end of the adjusting rod, and the other end thereof is bent, and plug holes are provided at both ends of the elastic clip, and the bent end of the adjusting rod is plug-connected to the plug hole.

[0018] Compared with the prior art, this application has the following beneficial effects:

[0019] The present application comprises a first splint and a second splint hinged to each other, the other ends of the second splint and the first splint are both free ends, and a clamping opening is provided between the two free ends; the bile duct constrictor is also provided with an adjustable support belt, one end of the adjustable support belt is fixedly connected to the second splint, and the other end thereof is slidably connected to the first splint, and a locking assembly for fixing the adjustable support belt is provided on the first splint; the bile duct constrictor also comprises a plurality of closing assemblies, and the closing assemblies are arranged in sequence along the axial direction of the bile duct;

[0020] When the bile duct constrictor of the present application is used, the first splint and the second splint are first opened to clamp the bile duct, and the top of the bile duct is flattened and then extended through the clamping opening, and the flattened portion is the portion that needs to be narrowed and closed, and then the first splint and the second splint are closed, and then the adjustment support belt is pulled on one side of the first splint, so as to control the length of the adjustment support belt between the first splint and the second splint, until the bottom of the bile duct fits the adjustment support belt, and finally the adjustment support belt is fixed by the locking assembly to complete the installation of the constrictor;

[0021] After installation, the bile duct constrictor is slid along the axial direction of the bile duct, and the closing components are sequentially arranged along the axial direction of the bile duct. The part of the top of the bile duct located in the clamping opening is closed by the closing components to form a closed area, and the constriction operation is completed. The other bile ducts located between the first clamping plate and the second clamping plate are non-closed areas.

[0022] Compared with the manual operation method in the prior art, the present application provides support by adjusting the support belt. On the one hand, it can ensure the stability of the connection between the bile duct and the constrictor during the constriction operation; on the other hand, the bile ducts of mice of different sizes are different. By adjusting the control of the support belt, the support requirements of different bile ducts can be met. At the same time, for constriction operations of different widths, the inner diameter of the flow surface of the non-enclosed area of ​​the bile duct retained between the first splint and the second splint is also different. By adjusting the support belt, the support operation under any different inner diameter conditions can be met, thereby expanding the scope of application of the equipment.

[0023] Secondly, in the process of sliding the bile duct constrictor along the bile duct axis, the support of the support belt can be adjusted to ensure the stability of the inner diameter of the bile duct flow surface between the first splint and the second splint, thereby ensuring the stability of the closed area and improving the constriction quality.

[0024] Finally, during the operation of the bile duct constrictor described in the present application, the bile duct constrictor can realize the rapid and accurate separation of the bile duct closed area and the non-closed area, which is beneficial to improve the operation efficiency; at the same time, the bile duct constrictor described in the present application can also accurately mark the area for installing the closing component through the clamping mouth, which is beneficial to the rapid installation of the closing component and improves the operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the structure of a bile duct constrictor provided in Example 1 of the present application;

[0026] Figure 2 An exploded view of a bile duct constrictor provided in Example 1 of the present application;

[0027] Figure 3 A cross-sectional view of a bile duct constrictor provided in Example 1 of the present application;

[0028] Figure 4 A diagram showing the use status of a bile duct constrictor provided in Example 1 of the present application;

[0029] Figure 5 It is a schematic diagram of the assembly of the plug rod and the plug hole;

[0030] Figure markings: 1-first clamping plate, 2-second clamping plate, 3-clamping mouth, 4-adjusting support belt, 5-plugging hole, 6-step hole, 7-plugging rod, 8-reset spring, 9-extrusion plate, 10-limiting plate, 11-first through-slot, 12-second through-slot, 13-first adjusting roller, 14-second adjusting roller, 15-fixing groove, 16-plugging plate, 17-limiting step, 18-radial limiting plate, 19-limiting hook, 20-limiting rod, 21-paste board, 22-release paper, 23-door frame, 24-extrusion roller, 25-locking rod, 26-locking block, 27-elastic clip, 28-adjusting rod, 29-operating panel, 101-measuring plate.

[0031] The purpose, features and advantages of this application will be further described in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "robot coordinate system and / or m" as an example, it includes the robot coordinate system scheme, or the m scheme, or the scheme that the robot coordinate system and m satisfy at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model. Example

[0036] Reference Figures 1 to 5 This embodiment discloses a bile duct constrictor, comprising a first splint 1 and a second splint 2, wherein the first splint 1 and the second clamping plate are both arranged in a semicircular structure, and the bottom of the first splint 1 and the bottom of the second splint 2 are hingedly connected via a hinge shaft; the top of the first splint 1 and the top of the second splint 2 are both free ends, and between the two free ends is a clamping opening 3 for the top of the bile duct to pass through the constrictor.

[0037] Furthermore, the bile duct constrictor further comprises a measuring plate 101, which is arranged on any side of the clamping opening 3 along the axial direction of the bile duct constrictor, and the measuring plate 101 is integrally connected to the free end of the first clamping plate 1 or the second clamping plate 2, and the inner side surface of the measuring plate 30 is provided with a ruler for measuring the width of the bile duct extending out of the clamping opening;

[0038] After the top of the bile duct passes through the clamping opening 3, the bile duct is flattened and attached to the measuring plate 30, and the size of the closed area can be quickly read by a ruler, which is more convenient and quick to use; at the same time, the above structural setting will not affect the overall structure of the entire constrictor.

[0039] A plug hole 5 is provided at one end where the first clamping plate 1 and the second clamping plate 2 are hingedly connected, and a step hole 6 is provided on the second clamping plate 2. The plug hole 5 and the step hole 6 are arranged along the axis direction of the hinge shaft, and the axes of the plug hole 5 and the step hole 6 are coaxial; the plug hole 5 is a blind hole, and the step hole 6 is a through hole, and the large end of the step hole 6 is directly opposite to the open end of the plug hole 5;

[0040] A plug-in rod 7 is also slidably arranged in the step hole 6, one end of the plug-in rod 7 is inserted into the plug-in hole 5, and the other end thereof passes through the step hole 6 and extends to the outside of the second clamping plate 2; a return spring 8 is also arranged in the large end of the step hole 6, the return spring 8 is sleeved on the plug-in rod 7, and an extrusion plate 9 is also integrally connected to the plug-in rod 7, the two ends of the return spring 8 are respectively abutted against the extrusion plate 9 and the step surface of the step hole 6, and the end of the plug-in rod 7 extending outside the second clamping plate 2 is also threadedly connected to a limit plate 10, and in a locked state, the limit plate 10 abuts against the side surface of the second clamping plate 2;

[0041] In the above structure, since the first clamping plate 1 and the second clamping plate 2 are hingedly connected, the other ends thereof are both in an unconstrained state. Therefore, during installation, the entire constrictor can be opened to expand the clamping opening 3, thereby providing sufficient space for clamping the bile duct and improving the convenience of operation. At the same time, after the bile duct is clamped, the clamping opening 3 can be reduced by closing the first clamping plate 1 and the second clamping plate 2 to ensure a stable connection.

[0042] Secondly, in the locked state, the plug rod 7 is inserted into the plug hole 5, so as to fix the positions of the first clamping plate 1 and the second clamping plate 2, thereby ensuring the stability of the opening size of the clamping opening 3, on the one hand, avoiding the clamping opening 3 from being too small to damage the bile duct, and on the other hand, avoiding the clamping opening 3 from being too large to cause unstable clamping;

[0043] When the lock needs to be released, the plug rod 7 is pulled outward, and the plug rod 7 compresses the return spring 8 through the extrusion plate 9. When the plug rod 7 is out of contact with the plug hole 5, the contact lock can be achieved. After the plug hole 5 and the step hole 6 are staggered, the plug rod 7 can be released.

[0044] The operation mode is simple and the stability is high, and the first clamping plate and the second clamping plate can be locked at the same time;

[0045] Finally, the opening size of the clamping opening 3 can be controlled by adding pads on both sides of the clamping opening 3 to meet different clamping requirements, and multi-level adjustment can also be achieved by providing multiple plug holes 5;

[0046] Meanwhile, the plug-in rod 7 can be replaced with a screw rod, and the adjustment to any position can be achieved by the end face of the screw rod abutting against the first clamping plate.

[0047] A first through-slot 11 is provided on the first clamping plate 1, and a second through-slot 12 is provided on the second clamping plate. It should be noted that the first through-slot 11 is provided on a side of the first clamping plate 1 close to the clamping opening 3, and the second through-slot 12 and the first through-slot 11 are symmetrically provided with respect to the clamping opening 3; the angle between the first through-slot 11 and the clamping opening 3 is 5°-15°.

[0048] A first adjusting roller 13 and a second adjusting roller 14 are rotatably arranged in the second through-slot 12, a gap is arranged between the first adjusting roller 13 and the second adjusting roller 14, and the bile duct constrictor further comprises an adjusting support belt 4, a section of the adjusting support belt 4 passes through the first through-slot 11, and the other end thereof passes through the gap between the first adjusting roller 13 and the second adjusting roller 14;

[0049] It should be noted that the adjustable support belt 4 is made of gauze or other medical flexible belt;

[0050] The purpose of limiting the structure of the first through-slot 11 and the second through-slot 12 as above is to enable the two ends of the portion of the adjustment support belt 4 between the first clamping plate 1 and the second clamping plate 2 to be as close to the clamping opening 3 as possible, thereby ensuring that in a naturally suspended state, the adjustment support belt 4 can form an elliptical wrapping surface between the first clamping plate 1 and the second clamping plate 2, thereby wrapping the upper half of the bile duct, which is beneficial to improving the stability of the bile duct after clamping, and avoiding the bile duct in the clamping opening 3 from slipping due to the shaking of the bile duct;

[0051] Secondly, since the structures of the first splint 1 and the second splint 2 are fixed and the adjustment margin of the clamping opening 3 is small, the first splint 1 and the second splint 2 cannot adapt to the change of the outer diameter of the bile duct; and the adjustment support belt 4 is made of gauze or other medical flexible belts, so it has good adjustability. Under the action of the bile duct's own gravity, it can fit with the outer surface of the surrogate and provide support; and then bile ducts of various outer diameters can be used to provide stable support for the bile duct, so that the bile duct constrictor described in the present application has better versatility;

[0052] At the same time, the adjustment can be achieved by pulling the adjustment support belt 4, and the operation method is simple and the reliability is high;

[0053] A fixing assembly is provided on the second clamping plate 2, and a locking assembly is provided on the first clamping plate 1, wherein the fixing assembly includes a fixing groove 15 and a plug-in plate 16, and along the radial direction of the second clamping plate 2, the top surface of the fixing groove 15 is open, and along the axial direction of the second clamping plate 2, one end of the fixing groove 15 is open and the other end is closed, and a radial limiting plate 18 is also provided at the closed end;

[0054] The plug board 16 is matched with the fixing groove 15, and the plug board 16 is inserted into the fixing groove 15. At the same time, a limiting step 17 is provided on a section of the plug board 16. Along the radial direction of the second clamping plate 2, the radial limiting plate 18 is fitted with the limiting step 17, so as to fix one end of the plug board 16. A limiting assembly is provided between the other end of the plug board 16 and the second clamping plate 2, and the limiting assembly includes a limiting hook 19 and a limiting rod 20 which cooperate with each other. The limiting rod 20 is provided on the second clamping plate 2, and the limiting hook 19 is rotatably connected to the plug board 16.

[0055] At the same time, the fixing assembly also includes an adhesive plate 21 disposed on the second clamping plate 2, and a release paper 22 is attached to the adhesive plate 21; the adhesive plate 21 is disposed between the fixing groove 15 and the clamping opening 3;

[0056] When in use, the end of one end of the adjusting support belt 4 is inserted into the fixing groove 15 after passing through the second plug-in groove, and then the end of the plug-in board 16 provided with the limiting step 17 is inserted into the fixing groove 15. After proper adjustment, one end of the adjusting support belt 4 is manually fixed, the release paper 22 is torn off, the adjusting support belt 4 is bonded to the adhesive plate 21, and then the adjusting support belt 4 is flattened. Finally, the entire plug-in board 16 is inserted into the fixing groove 15, and the plug-in board 16 is fixed by the limiting rod 20 and the limiting hook.

[0057] After installation, the bottom surface of the plug board 16 will press the adjustment support belt 4, so that one end of the adjustment support belt 4 is fixedly connected to the second clamping plate 2 to ensure the stability of the connection;

[0058] The above solution can ensure that the adjustable support belt 4 is stably connected to the second clamping plate 2, and at the same time, its structure is simple and can effectively improve the installation efficiency.

[0059] The locking assembly includes a door frame 23 mounted on the first clamping plate 1, an extrusion roller 24 is slidably arranged on the door frame 23, a locking rod 25 is threadedly connected to the door frame 23, and the locking assembly also includes a locking block 26, a plug-in sleeve is arranged on the top of the locking block 26, one end of the locking rod 25 is inserted into the plug-in sleeve, so as to realize the rotation connection between the locking rod 25 and the locking block 26;

[0060] The locking block 26 is provided with an arc surface, and the arc surface is in contact with the extrusion roller 24;

[0061] After the other end of the adjusting support belt 4 passes between the first adjusting roller 13 and the second adjusting roller 14, its end passes between the extrusion roller 24 and the outer wall of the first clamping plate 1. Since the extrusion roller 24 is slidably arranged on the door frame 23, the locking block 26 is pushed toward the extrusion roller 24 by the locking rod 25, thereby squeezing the extrusion roller 24 to move to one side of the adjusting support belt 4, and finally fixing the adjusting support belt 4 on the outer surface of the first clamping plate 1;

[0062] On the one hand, the locking assembly has a simple structure and is easy to operate; on the other hand, the structure can adjust the extrusion pressure of the extrusion roller 24 as needed, that is, control the tightness of the fixing of the adjustment support belt 4, and at the same time, combined with the rotatable extrusion roller 24, when the extrusion pressure of the extrusion roller 24 is small, the staff can make fine adjustments by pulling the adjustment support belt 4, and lock the extrusion roller 24 again after the adjustment is completed, which simplifies the fine-tuning process of the equipment and improves work efficiency.

[0063] Secondly, it can be seen from the above functional introduction that the fixing component fixes one end of the adjustment support belt 4 to the second splint 2, which is a dead connection, and the locking component is a live connection. The above structure is not only simple in structure, but also through the above setting, it gives the adjustment support belt 4 good adjustability to meet diverse usage requirements.

[0064] Finally, since the end of the adjustment support belt 4 connected to the first clamp plate 1 is the adjustment end, and the adjustment support belt 4 is in contact with the outer surface of the first clamp plate 1, the adjustment support belt 4 will inevitably be scratched against the side edges and corners of the first through-slot 11, thereby causing wear. The adjustment support belt 4 can be adjusted by the first adjustment roller 13 and the second adjustment roller 14 to avoid scratches against the side edges and corners, thereby protecting the adjustment support belt 4. At the same time, the first adjustment roller 13 and the second adjustment roller 14 can also reduce the adjustment resistance of the adjustment support belt 4, making it more convenient to use.

[0065] The bile duct constrictor further comprises a plurality of closing components, each of which is arranged in sequence along the axial direction of the bile duct;

[0066] The closing assembly includes an elastic clip 27, the cross section of which is a U-shaped structure, and the two free ends of the elastic clip 27 are clamping ends, and the opposite surfaces of the two clamping ends are in contact with each other;

[0067] It should be noted that the elastic clip 27 is preferably made of spring steel or other polymer materials with good elasticity that can be implanted in a living body. At the same time, the elastic force of the elastic clip 27 should be as small as possible under the premise of ensuring stable closure of the bile duct, so as to avoid the locking component from damaging the bile duct and ensure that the physiological function of the bile duct is not destroyed;

[0068] The closing assembly further includes an adjusting rod 28. The outer surfaces of the two free ends of the elastic clip 27 are also provided with plug holes 5. One end of the adjusting rod 28 is bent and inserted into the plug hole 5. The other end thereof is provided with an operating panel 29.

[0069] When in use, an adjustment rod 28 is inserted on both sides of the elastic clip 27, and the elastic clip 27 is pulled by the adjustment rod 28 to open the elastic clip 27. After the clamping is completed, the adjustment rod 28 is released, and the elastic clip 27 can be naturally closed, thereby closing the bile duct. The entire bile duct can be closed by a plurality of elastic clips 27 arranged along the axial direction of the bile duct;

[0070] It should be noted that the specifications of the elastic clip 27 can be changed according to the change of the narrowing requirements, and the best state is that the top surface of the bile duct closure area fits with the top inner wall of the elastic clip 27;

[0071] After the closing assembly completes the clamping, the adjusting rod 28 can be disassembled, which can avoid a large number of adjusting rods 28 being retained in the body of the mouse and causing adverse effects; on the other hand, the above arrangement can realize the reusability of the adjusting rod 28 and reduce the cost of the equipment;

[0072] Secondly, compared with the needle and thread suturing in the prior art, the present application closes the upper part of the bile duct by clamping, and at the same time, the control of the clamping force of the elastic clip 27 can avoid damage to the bile duct to the greatest extent, which is conducive to improving the accuracy of the test and also conducive to the rapid recovery of the mice after the test;

[0073] At the same time, compared with needle and thread suturing, the operation of the closure component described in the present application is simpler, which is not only conducive to improving the operational efficiency of the test, but also because the constrictor separates the bile duct, it can accurately mark the clamping points of the closure component, and its clamping is more precise.

[0074] Furthermore, a protective layer may be formed on the outer surface of the elastic clip 27, and an additional pad may be provided on the inner surface of the clamping end;

[0075] The elastic clip 27 is isolated by a protective layer to prevent the elastic clip 27 from causing adverse physiological effects on the mice; it should be pointed out that the pad is made of a flexible material or a material with a certain elasticity. The above-mentioned setting can enable the pad to better buffer the clamping force of the closing component, that is, when the redundancy of the clamping force adjustment of the elastic clip 27 is small, the clamping force of the elastic clip 27 is further reduced, thereby better protecting the bile duct.

[0076] Furthermore, along the axial direction of the bile duct, a tenon is provided on one side of the elastic clip 27, and a tenon groove is provided on the other side. When in use, the two adjacent elastic clips 27 are connected by the cooperation of the tenon and the tenon groove. On the one hand, the above structure can ensure that the elastic clips 27 are connected as a whole; on the other hand, it can also avoid the formation of a gap between the two adjacent elastic clips 27, thereby causing leakage, thereby improving the accuracy of the sample.

[0077] Correspondingly, the present application also discloses a method for using the above-mentioned bile duct constrictor, comprising the following steps:

[0078] S1, pulling out the plug rod from the plug hole to release the lock between the first clamping plate and the second clamping plate, then opening the first clamping plate and the second clamping plate to expand the clamping opening, and inserting the bile duct from the clamping opening between the first clamping plate and the second clamping plate;

[0079] S2, placing the upper part of the bile duct on the measuring board, and adjusting the state of the bile duct to ensure that the top closed area meets the requirements; then closing the first splint and the second splint;

[0080] S3, loosen the locking rod, pull the adjusting support belt, and when the adjusting support belt contacts the surface of the bile duct, fix the extrusion roller for the first time through the locking rod;

[0081] S4, adjusting the position of the constrictor so that the clamping opening faces upward and the bile duct is in a naturally suspended state; fine-tuning and pulling the adjusting support belt again so that the adjusting support belt slightly lifts the bile duct, and then adjusting the locking rod again to lock the extrusion roller;

[0082] S5, arranging the closing components in sequence along the axial direction of the bile duct, when the clamping opening is fully covered with the closing components, sliding the constrictor along the axial direction of the bile duct, and arranging the closing components again to complete the constriction operation of the bile duct;

[0083] It should be pointed out that for the two ends of the bile duct closure area, you can choose to sew with needle and thread or choose a closure component that meets the requirements for closure.

[0084] Compared with the manual operation method in the prior art, the present application provides support by adjusting the support belt. On the one hand, it can ensure the stability of the connection between the bile duct and the constrictor during the constriction operation; on the other hand, the bile ducts of mice of different sizes are different. By adjusting the control of the support belt, the support requirements of different bile ducts can be met. At the same time, for constriction operations of different widths, the inner diameter of the flow surface of the non-enclosed area of ​​the bile duct retained between the first splint and the second splint is also different. By adjusting the support belt, the support operation under any different inner diameter conditions can be met, thereby expanding the scope of application of the equipment.

[0085] Secondly, in the process of sliding the bile duct constrictor along the bile duct axis, the support of the support belt can be adjusted to ensure the stability of the inner diameter of the bile duct flow surface between the first splint and the second splint, thereby ensuring the stability of the closed area and improving the constriction quality.

[0086] Finally, during the operation of the bile duct constrictor described in the present application, the bile duct constrictor can realize the rapid and accurate separation of the bile duct closed area and the non-closed area, which is beneficial to improve the operation efficiency; at the same time, the bile duct constrictor described in the present application can also accurately mark the area for installing the closing component through the clamping mouth, which is beneficial to the rapid installation of the closing component and improves the operation efficiency.

[0087] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A bile duct constrictor, characterized in that: It comprises a first clamping plate (1); a second clamping plate (2), one end of the second clamping plate (2) being hingedly connected to one end of the first clamping plate (1); the other ends of the second clamping plate (2) and the first clamping plate (1) are both free ends, and a clamping opening (3) is provided between the two free ends; an adjusting support belt (4), one end of the adjusting support belt (4) being fixedly connected to the second clamping plate (2), and the other end of the adjusting support belt (4) being slidably connected to the first clamping plate (1), and a locking component for fixing the adjusting support belt (4) being provided on the first clamping plate (1); A plurality of closing components, each of which is arranged in sequence along the axial direction of the bile duct; A measuring plate (101), the measuring plate (101) being arranged on one side of the clamping opening (3), the measuring plate (101) being integrally connected to the free end of the first clamping plate (1) or the second clamping plate (2), and a scale being also arranged on the measuring plate (101).

2. A bile duct constrictor according to claim 1, characterized in that: Along the axial direction of the bile duct constrictor, the first clamping plate (1) is also provided with a plug-in hole (5), and the second clamping plate (2) is provided with a step hole (6). A plug-in rod (7) adapted to the plug-in hole (5) is slidably provided in the step hole (6), and a return spring (8) is also provided in the step hole (6). An extrusion plate (9) is provided on the plug-in rod (7), and the two ends of the return spring (8) are respectively abutted against the extrusion plate (9) and the step surface of the step hole (6); and a limit plate (10) adapted to the second clamping plate (2) is also provided on the plug-in rod (7).

3. A bile duct constrictor according to claim 1, characterized in that: The first clamping plate (1) is provided with a first through-slot (11), the second clamping plate (2) is provided with a second through-slot (12), the second clamping plate (2) is provided with a fixing component, one end of the adjustment support belt (4) passes through the second through-slot (12) to be connected to the fixing component, and the other end passes through the first through-slot (11) to be connected to the locking component.

4. A bile duct constrictor according to claim 3, characterized in that: A first adjusting roller (13) and a second adjusting roller (14) are rotatably arranged in the second insertion slot (12); the adjusting support belt (4) passes between the first adjusting roller (13) and the second adjusting roller (14) and is connected to the locking assembly.

5. The bile duct constrictor according to claim 3, characterized in that: The fixing assembly comprises a fixing groove (15) and a plug-in plate (16); a limiting step (17) is arranged at one end of the plug-in plate (16); a radial limiting plate (18) adapted to the limiting step (17) is arranged on the fixing groove (15); and a limiting assembly is also arranged between the plug-in plate (16) and the second clamping plate (2).

6. A bile duct constrictor according to claim 5, characterized in that: The limiting assembly comprises a limiting hook (19) and a limiting rod (20) which cooperate with each other. The limiting rod (20) is arranged on the second clamping plate (2), and the limiting hook (19) is rotatably connected to the plug-in board (16).

7. The bile duct constrictor according to claim 5, characterized in that: The fixing assembly further comprises an adhesive plate (21), and a release paper (22) is attached to the adhesive plate (21).

8. The bile duct constrictor according to claim 1, characterized in that: The locking assembly comprises a door frame (23) mounted on the first clamping plate (1), an extrusion roller (24) being slidably arranged on the door frame (23), a locking rod (25) being threadedly connected to the door frame (23), a locking block (26) being rotatably arranged at one end of the locking rod (25), and the locking block (26) being in contact with the extrusion roller (24).

9. The bile duct constrictor according to claim 1, characterized in that: The closing component comprises an elastic clip (27), the elastic clip (27) is in a U-shaped structure, and the two ends of the elastic clip (27) are in contact with each other; and the two ends of the elastic clip (27) are both provided with adjustment rods (28).

10. The bile duct constrictor according to claim 9, characterized in that: An operating plate (29) is provided at one end of the adjusting rod (28), and the other end thereof is bent. Both ends of the elastic clip (27) are provided with plug holes (5), and the bent end of the adjusting rod (28) is plug-connected to the plug hole (5).

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