Distraction device for rat liver transplantation bile duct anastomosis

Abstract

The invention discloses a distraction device for bile duct anastomosis in rat liver transplantation, relates to the technical field of rat liver transplantation, and solves the problems of unstable and uneven suture. The distraction device for rat liver transplantation bile duct anastomosis comprises a sleeve, a storage groove is formed in the top of the sleeve, connecting pipelines are symmetrically fixed to the two sides of the sleeve, suction cups are fixed to the tail ends of the connecting pipelines, the upper end faces of the suction cups are connected with an abutting and supporting mechanism in a suction mode, and an unlocking mechanism is fixed to one side of the sleeve. The unlocking mechanism penetrates through the side wall of the sleeve and is connected to the abutting and supporting mechanism in a clamped mode. According to the rat bile duct fixing device, after the air bag is inflated, the air bag is expanded, and when two sections of rat bile ducts are arranged on the outer side of the air bag in a sleeving mode, the air bag can support the rat bile ducts, auxiliary stable sewing is facilitated, and the sewing effect is smoother; after sewing work of most of the upper portions of the two rat bile ducts is completed, air in the air bag can be released, the air bag is pulled out of the rat bile ducts, and finally the whole device can be taken away.

Description

Technical Field

[0001] The invention relates to the technical field of rat liver transplantation, in particular to a distraction device for bile duct anastomosis in rat liver transplantation. Background Art

[0002] The rat liver transplantation model is an effective means to study ischemia-reperfusion injury, rejection reaction and immune tolerance in liver transplantation; obtain the donor liver, remove the recipient liver, place the donor liver in the original position of the recipient liver, anastomose the suprahepatic and inferior vena cava, insert the donor bile duct into the recipient bile duct cannula, and suture the abdominal wall.

[0003] In the existing bile duct anastomosis surgery, it is difficult to directly connect the bile duct because the bile duct of the rat is very thin and soft. Poor connection will lead to unstable suturing operation and uneven suturing effect. In view of the above problems, the existing equipment needs to be improved. Summary of the invention

[0004] The purpose of the present invention is to provide a distraction device for bile duct anastomosis in rat liver transplantation, so as to solve the problem that during the suturing operation of the existing bile duct anastomosis surgery proposed in the above background technology, the bile duct of the rat is very thin and soft, so it is difficult to directly connect the bile duct. Poor connection will lead to unstable suturing operation and uneven suturing effect.

[0005] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme:

[0006] The present invention provides a distraction device for bile duct anastomosis in rat liver transplantation, comprising a sleeve, a clamping and mounting mechanism is fixed on one side of the sleeve, a receiving groove is provided on the top of the sleeve, connecting pipes are symmetrically fixed on both sides of the sleeve, a suction cup is fixed at the end of the connecting pipe, a supporting mechanism is sucked and connected to the upper end surface of the suction cup, an unlocking mechanism is fixed on one side of the sleeve, and the unlocking mechanism penetrates the side wall of the sleeve and is clamped and connected to the supporting mechanism;

[0007] Wherein, the supporting mechanism comprises:

[0008] A ventilation pipe, one side of which is provided with two first slots, the ventilation pipe passes through the sleeve and is connected to the airtight cylinder;

[0009] A pull rod, the pull rod passes through the bottom of the airtight cylinder and is connected to the piston, and the piston is slidably connected in the airtight cylinder;

[0010] The airbag is symmetrically fixed on both sides of the top of the ventilation duct, a first pull rope is fixed to the top of the piston, the first pull rope runs through the ventilation duct and is connected to the second pull rope, four third pull ropes are fixed to the end of the second pull rope, and the ends of the four third pull ropes are all fixed on the inner wall of the airbag.

[0011] As a preferred solution of the present invention, the clamping and mounting mechanism comprises:

[0012] A support rod, wherein the support rod is fixed to one side of the sleeve, and one end of the support rod is connected to the toothed disc via a first compression spring;

[0013] A support sleeve, the support sleeve is rotatably connected to the outer side of one end of the support rod, and a gear ring is fixed on an inner wall of the support sleeve, and the gear ring is meshingly connected to the gear disc;

[0014] An extrusion rod, wherein the extrusion rod passes through one side of the support sleeve, and a first pressing block is fixed to one end of the extrusion rod, and a ball is movably connected to the other end of the first pressing block, and the ball rests on the gear disc;

[0015] The bracket is fixed at the bottom of the support sleeve, and one side of the bracket is threadedly connected with a threaded rod, and the threaded rod passes through one side of the bracket and is rotatably connected with a clamping plate.

[0016] As a preferred solution of the present invention, limiting rods are fixed on both sides of one end surface of the toothed disc, the first compression spring is wrapped around the outside of the limiting rod, limiting grooves are symmetrically provided on both sides of one end surface of the support rod, and the limiting rod is slidably connected in the limiting groove.

[0017] By adopting the above technical solution, the limiting rod plays a role of supporting and limiting the toothed disc.

[0018] As a preferred solution of the present invention, an air suction pipe is fixed inside the side wall of the sleeve, and the air suction pipe runs through the other side of the sleeve and is connected to a suction pump.

[0019] By adopting the above technical solution, when the suction pipe inhales downward, the suction cup can absorb and fix the rat bile duct.

[0020] As a preferred solution of the present invention, an annular channel is provided in the side wall of the sleeve, and the annular channel is connected to the end of the air intake pipe, and the head end of the connecting pipe is connected to the annular channel.

[0021] By adopting the above technical solution, when the suction pipe inhales air, the annular channel, the connecting pipe and the suction cup inhale air, thereby adsorbing and fixing the rat bile duct.

[0022] As a preferred solution of the present invention, a second slot is formed on one side of the pull rod, and the second slots are evenly spaced on the pull rod.

[0023] By adopting the above technical solution, when the pull rod and the piston are pulled down as a whole, the ventilation pipe draws out the air in the airbag.

[0024] As a preferred solution of the present invention, a slide groove is provided on one side of the airtight cylinder, and a limiting column is fixed in the slide groove, a slider is slidably connected in the slide groove, the limiting column passes through the slider, and one side of the slider is connected to the first locking block through a connecting rope, the first locking block is connected to the airtight cylinder through a second compression spring, and the first locking block is engaged in one of the second slots.

[0025] By adopting the above technical solution, the first locking block can be used to lock the pull rod.

[0026] As a preferred solution of the present invention, a through hole is provided on the airbag, a limiting ring is fixed in the through hole, and the second pull rope passes through the limiting ring.

[0027] By adopting the above technical solution, the limiting ring plays a supporting and limiting role for the second pull rope.

[0028] As a preferred solution of the present invention, the unlocking mechanism includes:

[0029] A groove, wherein the groove is provided on one side of the sleeve, and a third compression spring is fixed in the groove, a second pressing block is fixed at one end of the third compression spring, and the second pressing block is slidably connected in the groove;

[0030] A first tooth plate, wherein the first tooth plate is fixed to one side of the second pressing block, and a gear is meshedly connected to the bottom of the first tooth plate;

[0031] The second tooth plate is meshedly connected to the bottom of the gear, and the second tooth plate passes through the inner wall of the sleeve and is engaged and connected in one of the first slots.

[0032] By adopting the above technical solution, the ventilation duct needs to be unlocked before the deflated airbag is withdrawn from the rat bile duct, and the airtight cylinder and the ventilation duct are pulled down as a whole to pull the airbag out of the rat bile duct.

[0033] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects:

[0034] 1. The dilating device for bile duct anastomosis in rat liver transplantation can achieve the purpose of dilating and suturing for stable and smooth suturing by using the provided air bag. After the air bag is inflated, the air bag expands. When two sections of rat bile duct are placed on the outside of the air bag, the air bag can support the rat bile duct, which is convenient for assisting stable suturing and making the suturing effect smoother. After completing the suturing work of the upper part of the two sections of the rat bile duct, the air in the air bag can be deflated and the air bag can be pulled out of the rat bile duct, and finally the entire device can be withdrawn.

[0035] 2. The expansion device for bile duct anastomosis in rat liver transplantation can achieve the purpose of locking after inflation and deflation through the coordinated use of the ventilation pipe, the pull rod, the piston, the second slot, the slider, the connecting rope, the first locking block and the air bag. When the pull rod and the piston are pulled down, the ventilation pipe can deflate the air in the air bag. When the pull rod and the piston are pressed up, the ventilation pipe can inflate the air into the air bag. Before moving the pull rod up and down, the pull rod needs to be unlocked. When the slider is pushed upward, the first locking block moves and leaves the second slot under the pulling action of the connecting rope, which is convenient for unlocking the pull rod. Then the pull rod can be moved up and down. After the pull rod is moved, the slider can be released, and the first locking block automatically pops open and is stuck in the corresponding second slot, which is convenient for re-locking the pull rod.

[0036] 3. The expansion device for bile duct anastomosis in rat liver transplantation can achieve the purpose of extraction and storage through the coordinated use of the storage slot, ventilation duct, first card slot, airtight cylinder, airbag, second pressing block, first tooth plate, gear and second tooth plate. Before extracting the deflated airbag from the rat bile duct, the second pressing block needs to be pressed, the first tooth plate moves to the left, the gear rotates, the second tooth plate moves to the right and leaves the first card slot, which is convenient for unlocking the ventilation duct. Then the airtight cylinder and the ventilation duct can be pulled down as a whole, and the deflated airbag is extracted from the rat bile duct and finally retracted into the storage slot for easy storage.

[0037] 4. The dilating device for bile duct anastomosis in rat liver transplantation can achieve the purpose of stable adsorption through the coordinated use of the suction cup and the air bag. After completing most of the suturing work on the two sections of the rat bile duct, the suction cup can be used to adsorb and fix the rat bile duct, which is convenient for assisting and stabilizing the remaining suturing work. After the air in the air bag is deflated and the air bag is removed from the rat bile duct, the remaining suturing work can be completed. After the adsorption of the rat bile duct is released, the entire device can be withdrawn. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0039] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0041] Figure 2 It is a front cross-sectional structural schematic diagram of the present invention;

[0042] Figure 3 The present invention Figure 2 A is a schematic diagram of the enlarged structure;

[0043] Figure 4 The present invention Figure 2 Middle B is a schematic diagram of the enlarged structure;

[0044] Figure 5 The present invention Figure 2 Middle C is a schematic diagram of the enlarged structure;

[0045] Figure 6 The present invention Figure 2 Middle D is a schematic diagram of the enlarged structure;

[0046] Figure 7 It is a schematic diagram of the toothed disc structure of the present invention;

[0047] Figure 8 It is a schematic diagram of the connection structure between the support sleeve and the gear ring of the present invention;

[0048] Fig. 9 It is a schematic diagram of the connection structure of the first pressing block, the extrusion rod and the ball bearing of the present invention;

[0049] Fig.10 It is a schematic diagram of the connection structure of the piston, the first pull rope, the second pull rope, the limit ring and the third pull rope of the present invention.

[0050] In the figure: 1, sleeve; 2, clamping and mounting mechanism; 201, support rod; 202, first compression spring; 203, toothed disc; 204, limit rod; 205, limit groove; 206, support sleeve; 207, gear ring; 208, bracket; 209, threaded rod; 210, clamping plate; 211, first pressing block; 212, extrusion rod; 213, ball; 3, storage groove; 4, suction pipe; 5, suction pump; 6, annular channel; 7, connecting pipe; 8, suction cup; 9, supporting mechanism; 901, ventilation pipe; 902, first slot; 903, airtight cylinder ; 904, pull rod; 905, piston; 906, second slot; 907, slide slot; 908, limit column; 909, slider; 910, connecting rope; 911, first locking block; 912, second compression spring; 913, airbag; 914, through hole; 915, first pull rope; 916, second pull rope; 917, limit ring; 918, third pull rope; 10, unlocking mechanism; 1001, groove; 1002, third compression spring; 1003, second pressing block; 1004, first tooth plate; 1005, gear; 1006, second tooth plate. DETAILED DESCRIPTION

[0051] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0052] See also Figure 1-Figure 8 A distraction device for bile duct anastomosis in rat liver transplantation comprises a sleeve 1, a clamping and mounting mechanism 2 is fixed on one side of the sleeve 1, a receiving groove 3 is provided on the top of the sleeve 1, connecting pipes 7 are symmetrically fixed on both sides of the sleeve 1, a suction cup 8 is fixed at the end of the connecting pipe 7, a supporting mechanism 9 is sucked and connected to the upper end surface of the suction cup 8, an unlocking mechanism 10 is fixed on one side of the sleeve 1, and the unlocking mechanism 10 passes through the side wall of the sleeve 1 and is snap-connected to the supporting mechanism 9.

[0053] Wherein, the supporting mechanism 9 includes:

[0054] The ventilation pipe 901 has two first slots 902 on one side. The ventilation pipe 901 passes through the sleeve 1 and is connected to the airtight tube 903. After the air in the airbag 913 is pumped out, the airtight tube 903 and the ventilation pipe 901 can be pulled down as a whole to facilitate the airbag 913 to be pulled out from the rat bile duct. The pull rod 904 passes through the bottom of the airtight tube 903 and is connected to the piston 905. The piston 905 is slidably connected in the airtight tube 903. When the pull rod 904 and the piston 905 are pulled down, the ventilation pipe 901 can pump out the air in the airbag 913. When the pull rod 904 and the piston 905 are pressed up, the ventilation pipe 901 can inflate the airbag 913. The airbag 913 is symmetrically fixed on both sides of the top of the ventilation duct 901. A first pull rope 915 is fixed on the top of the piston 905. The first pull rope 915 runs through the ventilation duct 901 and is connected to the second pull rope 916. Four third pull ropes 918 are fixed to the end of the second pull rope 916. The ends of the four third pull ropes 918 are all fixed on the inner wall of the airbag 913. When the piston 905 moves downward, the ventilation duct 901 can draw out the air in the airbag 913. At the same time, the piston 905 pulls the first pull rope 915, the second pull rope 916 and the third pull rope 918. The four third pull ropes 918 play a pulling role on the airbag 913, which is convenient for regularly retracting the airbag 913.

[0055] The above working principle is as follows: first, clamp the bracket 208 at the desired location, then tighten the threaded rod 209 and make the clamping plate 210 press against the installation position to install the device, and then rotate the sleeve 1 and the support rod 201 as a whole relative to the support sleeve 206. Before rotating the sleeve 1 and the support rod 201, it is necessary to press the first pressing block 211, and the squeezing rod 212 moves to the left and squeezes the toothed disc 203 to move to the left. After the toothed disc 203 leaves the gear ring 207, the sleeve 1 and the support rod 201 can be rotated as a whole relative to the support sleeve 206, which is convenient for adjusting the angle of the sleeve 1. After the airbag 913 is inflated, the airbag 913 The rat bile duct is expanded and stretched, and the two rat bile ducts are respectively placed on the outside of the two air bags 913 and the two sections of the rat bile duct are anastomosed and spliced ​​together. The upper parts of the two sections of the rat bile duct are sutured together using a suturing device, and then the suction pump 5 is started, and the suction pipe 4, the annular channel 6, the connecting pipe 7 and the suction cup 8 suck air downward to fix the two sections of the rat bile duct, and then the slider 909 is pushed upward, and the first locking block 911 moves and leaves the second card slot 906 under the pulling action of the connecting rope 910, thereby unlocking the pull rod 904, and then the pull rod 904 and the piston 905 are pulled down, and the ventilation pipe 901 is moved to The air in the airbag 913 is released, and at the same time, the piston 905 pulls the first pull rope 915, the second pull rope 916 and the third pull rope 918 downward, thereby pulling up the deflated airbag 913, and then the second pressing block 1003 is pressed, the first tooth plate 1004 moves to the left, the gear 1005 rotates counterclockwise, and the second tooth plate 1006 moves to the right and leaves the first card slot 902, thereby unlocking the ventilation pipe 901, and then the airtight cylinder 903 and the ventilation pipe 901 are pulled down as a whole, and the deflated airbag 913 is pulled out of the rat bile duct and finally shrinks into the storage slot 3, and the second tooth plate 1006 is finally Finally, it is stuck in the corresponding first slot 902 to re-lock the ventilation duct 901. After completing the remaining suturing work, the adsorption of the rat bile duct is stopped, and finally the entire device is withdrawn. The pull rod 904 and the piston 905 are pressed up to pressurize the air into the ventilation duct 901, which is convenient for inflating the airbag 913. Before pressing the pull rod 904 and the piston 905, the pull rod 904 must be unlocked first. After pressing and pulling the pull rod 904, the slider 909 can be released. The first locking block 911 automatically pops open and is stuck in the corresponding second slot 906 under the action of the second compression spring 912, which is convenient for re-locking the pull rod 904.

[0056] Specific reference Figure 1 , Figure 2 , Figure 3 , Figure 7 , Figure 8 and Fig. 9 , the clamping and mounting mechanism 2 comprises:

[0057] The support rod 201 is fixed on one side of the sleeve 1, and one end of the support rod 201 is connected to the toothed disc 203 through the first compression spring 202. The first compression spring 202 supports the toothed disc 203 and can assist the toothed disc 203 to quickly reset. The support sleeve 206 is rotatably connected to the outer side of one end of the support rod 201, and a gear ring 207 is fixed on an inner wall of the support sleeve 206. The gear ring 207 is meshed and connected to the toothed disc 203. When the relative rotation Before rotating the support sleeve 206 and the support rod 201, the toothed disc 203 needs to be unlocked. The toothed disc 203 is initially meshed and connected with the gear ring 207. After squeezing the toothed disc 203 and making it leave the gear ring 207, the support sleeve 206 and the support rod 201 can be relatively rotated to squeeze the rod 212. The squeezing rod 212 passes through one side of the support sleeve 206, and one end of the squeezing rod 212 is fixed with a first pressing block 211, and the other end of the first pressing block 211 is movably connected with a ball 213, and the ball 213 When the first pressing block 211 is pressed to the left manually against the toothed disc 203, the squeezing rod 212 moves to the left, thereby squeezing the toothed disc 203 to move to the left. After the toothed disc 203 and the gear ring 207 are separated, the support sleeve 206 and the support rod 201 can be relatively rotated. At this time, the ball 213 rotates to reduce the friction between the squeezing rod 212 and the toothed disc 203. After the first pressing block 211 is released, the toothed disc 203 can automatically pop open and re-engage under the action of the first compression spring 202. To the gear ring 207, it is convenient to lock the support rod 201 and the support sleeve 206 together again, the bracket 208, the bracket 208 is fixed to the bottom of the support sleeve 206, and one side of the bracket 208 is threadedly connected with a threaded rod 209, the threaded rod 209 passes through one side of the bracket 208 and is rotatably connected with a clamping plate 210, after the bracket 208 is clamped in the desired location, the threaded rod 209 can be tightened to the left, and the clamping plate 210 moves to the left and presses against the installation position, so that the device can be clamped and fixed.

[0058] In this embodiment, limiting rods 204 are fixed on both sides of one end surface of the toothed disc 203, the first compression spring 202 is wrapped around the outside of the limiting rod 204, limiting grooves 205 are symmetrically provided on both sides of one end surface of the support rod 201, and the limiting rod 204 is slidably connected in the limiting groove 205. When the toothed disc 203 moves left and right, the limiting rod 204 slides in the limiting groove 205, which facilitates the limiting function. The toothed disc 203 can move horizontally relative to the support rod 201 but cannot rotate relative to it.

[0059] The present invention provides a distraction device for bile duct anastomosis in rat liver transplantation. After the support 208 is clamped at the required location, the threaded rod 209 can be tightened to the left, and the clamp 210 can finally be pressed against the installation position, which is convenient for installing and fixing the device. The support sleeve 206 and the support rod 201 can rotate relative to each other, which is convenient for adjusting the angle of the sleeve 1. Before the support sleeve 206 and the support rod 201 are relatively rotated, the first pressing block 211 needs to be pressed, the extrusion rod 212 moves to the left, the toothed disc 203 is squeezed and moves to the left and leaves the gear ring 207, and then the support sleeve 206 and the support rod 201 can be relatively rotated.

[0060] Specific reference Figure 1 and Figure 2 An air suction pipe 4 is fixed in the side wall of the sleeve 1, and the air suction pipe 4 runs through the other side of the sleeve 1 and is connected to the suction pump 5. After the suction pump 5 is started, the air suction pipe 4 sucks air downward, making it convenient to use the suction cup 8 to absorb and fix the rat bile duct.

[0061] In the opener for bile duct anastomosis in rat liver transplantation of the present invention, the suction pump 5 can be used for suction, and the suction pipe 4 can draw air downward.

[0062] Specific reference Figure 1 and Figure 2 An annular channel 6 is provided in the side wall of the sleeve 1, and the annular channel 6 is connected with the end of the suction pipe 4, and the head end of the connecting pipe 7 is connected with the annular channel 6. The connecting pipe 7 serves to connect the annular channel 6 and the suction cup 8. When the suction pipe 4 inhales downward, the annular channel 6, the connecting pipe 7 and the suction cup 8 inhale downward, which is convenient for adsorbing and fixing the rat bile duct.

[0063] In the opener for bile duct anastomosis in rat liver transplantation of the present invention, when the suction pipe 4 draws air downward, the annular channel 6, the connecting pipe 7 and the suction cup 8 draw air, so as to conveniently adsorb and fix the bile duct of the rat.

[0064] Specific reference Figure 1 , Figure 2 , Figure 4 , Figure 5 and Fig.10 A second slot 906 is provided on one side of the pull rod 904, and the second slots 906 are evenly spaced on the pull rod 904. After the airbag 913 is used to open the rat bile duct and most of the suturing operations on the two sections of the rat bile duct are completed, the pull rod 904 is first unlocked, and then the pull rod 904 is pulled down, the piston 905 moves downward, the ventilation pipe 901 is evacuated downward, the airbag 913 is deflated, and at the same time, the piston 905 pulls the first pull rope 915, the second pull rope 916 and the third pull rope 918 downward to facilitate the regular shrinkage of the airbag 913. When the pull rod 904 is pressed upward, the piston 905 moves upward to facilitate the compression of air into the ventilation pipe 901, and the airbag 913 is inflated to facilitate the opening of the rat bile duct.

[0065] In this embodiment, a slide groove 907 is provided on one side of the airtight cylinder 903, and a limiting column 908 is fixed in the slide groove 907. A slider 909 is slidably connected in the slide groove 907. The limiting column 908 passes through the slider 909, and one side of the slider 909 is connected to a first locking block 911 through a connecting rope 910. The first locking block 911 is connected to the airtight cylinder 903 through a second compression spring 912, and the first locking block 911 is engaged and connected in one of the second slots 906. The connecting rope 910 serves to connect the first locking block 911 and the slider 909. Before pulling down the pull rod 904, the slider 909 needs to be pushed upward manually. The first locking block 911 moves to the left and leaves the second slot 906 under the pulling action of the connecting rope 910. After pulling down the pull rod 904, the slider 909 can be released. The first locking block 911 automatically pops open and is stuck in the corresponding second slot 906 under the action of the second compression spring 912, making it convenient to re-lock the pull rod 904.

[0066] At the same time, in this embodiment, a through hole 914 is opened on the airbag 913, and a limiting ring 917 is fixed in the through hole 914. The second pull rope 916 passes through the limiting ring 917. When air is compressed into the ventilation pipe 901, the gas can pass through the through hole 914 and enter the airbag 913, which is convenient for inflating the airbag 913. The limiting ring 917 supports and limits the second pull rope 916.

[0067] The present invention provides a distraction device for bile duct anastomosis in rat liver transplantation. Before inflating or releasing the air in the airbag 913, it is necessary to unlock the pull rod 904, push the slider 909 upward, and the first locking block 911 moves and leaves the second clamping groove 906 under the pulling action of the connecting rope 910, thereby unlocking the pull rod 904. When the pull rod 904 and the piston 905 are pressed upward as a whole, the ventilation pipe 901 inflates the airbag 913. When the pull rod 904 and the piston 905 are pulled downward as a whole, the ventilation pipe 901 releases the air in the airbag 913, and the airbag 913 deflates. At the same time, the piston 905 pulls the first pull rope 915, the second pull rope 916 and the third pull rope 918 downward, so as to facilitate the regular shrinking of the airbag 913.

[0068] Specific reference Figure 1 , Figure 2 and Figure 6 , the unlocking mechanism 10 comprises:

[0069] The groove 1001 is provided on one side of the sleeve 1, and a third compression spring 1002 is fixed in the groove 1001, a second pressing block 1003 is fixed at one end of the third compression spring 1002, and the second pressing block 1003 is slidably connected in the groove 1001, and the third compression spring 1002 supports the second pressing block 1003, so as to facilitate the rapid reset of the second pressing block 1003. Before removing the airbag 913, the second pressing block 1003 needs to be pressed to unlock the ventilation duct 901;

[0070] The first tooth plate 1004 is fixed to one side of the second pressing block 1003, and the bottom of the first tooth plate 1004 is meshedly connected with a gear 1005. When the second pressing block 1003 is pressed, the first tooth plate 1004 moves to the left together with the second pressing block 1003, thereby driving the gear 1005 to rotate counterclockwise;

[0071] The second tooth plate 1006 is meshedly connected to the bottom of the gear 1005, and the second tooth plate 1006 passes through the inner wall of the sleeve 1 and is engaged and connected in one of the first slots 902. When the second pressing block 1003 is pressed, the first tooth plate 1004 moves to the left, and the gear 1005 rotates counterclockwise, thereby driving the second tooth plate 1006 to move to the right. After the second tooth plate 1006 leaves the first slot 902, the ventilation duct 901 can be unlocked, and then the airtight cylinder 903 and the ventilation duct 901 can be pulled down as a whole.

[0072] The present invention provides a distraction device for bile duct anastomosis in rat liver transplantation. After the air in the airbag 913 is released, the airbag 913 can be pulled out from the rat bile duct. Before pulling out the airbag 913, the second pressing block 1003 and the first tooth plate 1004 need to be pushed to the left, the gear 1005 rotates counterclockwise, and the second tooth plate 1006 moves to the right and leaves the first slot 902, thereby unlocking the ventilation duct 901. Finally, the airtight cylinder 903 and the ventilation duct 901 can be pulled down as a whole, and the deflated airbag 913 is pulled out of the rat bile duct and finally retracted into the storage slot 3 for easy storage.

[0073] The use method and advantages of the present invention: The working process of the expansion device for bile duct anastomosis in rat liver transplantation is as follows:

[0074] like Figures 1 to 8As shown: first, clamp the bracket 208 at the desired location, then tighten the threaded rod 209 and make the clamping plate 210 press against the installation position to install the device, and then rotate the sleeve 1 and the support rod 201 as a whole relative to the support sleeve 206. Before rotating the sleeve 1 and the support rod 201, it is necessary to press the first pressing block 211, and the squeezing rod 212 moves to the left and squeezes the toothed disc 203 to move to the left. After the toothed disc 203 leaves the gear ring 207, the sleeve 1 and the support rod 201 can be rotated as a whole relative to the support sleeve 206 to facilitate the adjustment of the angle of the sleeve 1. After the airbag 913 is inflated, the airbag 913 expands and The rat bile duct is stretched open, the two rat bile ducts are respectively placed on the outside of the two air bags 913 and the two sections of the rat bile duct are anastomosed and spliced ​​together, and then the upper parts of the two sections of the rat bile duct are sutured together using a suturing device, and then the suction pump 5 is started, and the suction pipe 4, the annular channel 6, the connecting pipe 7 and the suction cup 8 suck air downward to fix the two sections of the rat bile duct, and then the slider 909 is pushed upward, and the first locking block 911 moves and leaves the second card slot 906 under the pulling action of the connecting rope 910, thereby unlocking the pull rod 904, and then the pull rod 904 and the piston 905 are pulled down, and the ventilation pipe 901 is pumped downward. The air in the airbag 913 is released, and at the same time, the piston 905 pulls the first pull rope 915, the second pull rope 916 and the third pull rope 918 downward, thereby pulling up the deflated airbag 913, and then pressing the second pressing block 1003, the first tooth plate 1004 moves to the left, the gear 1005 rotates counterclockwise, and the second tooth plate 1006 moves to the right and leaves the first card slot 902, thereby unlocking the ventilation pipe 901, and then the airtight cylinder 903 and the ventilation pipe 901 are pulled down as a whole, and the deflated airbag 913 is pulled out of the rat bile duct and finally shrinks into the storage slot 3, and the second tooth plate 1006 finally It is stuck into the corresponding first slot 902 to re-lock the ventilation duct 901. After completing the remaining suturing work, the adsorption of the rat bile duct is stopped, and finally the entire device is withdrawn. The pull rod 904 and the piston 905 are pressed upward to pressurize the air into the ventilation duct 901, which is convenient for inflating the airbag 913. Before pressing the pull rod 904 and the piston 905, the pull rod 904 must be unlocked first. After pressing and pulling the pull rod 904, the slider 909 can be released. The first locking block 911 automatically pops open and is stuck into the corresponding second slot 906 under the action of the second compression spring 912, which is convenient for re-locking the pull rod 904.

[0075] In summary, the fiberglass mesh cloth tape production device achieves the purpose of stretching for stable and smooth stitching, locking after inflation and deflation, and pulling out for storage and adsorption stability, meeting people's usage needs.

[0076] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0077] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

[0078] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the protection content of the present invention.

[0079] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A distraction device for bile duct anastomosis in rat liver transplantation, comprising a sleeve (1), Features: A clamping and mounting mechanism (2) is fixed on one side of the sleeve (1), a receiving groove (3) is provided on the top of the sleeve (1), connecting pipes (7) are symmetrically fixed on both sides of the sleeve (1), a suction cup (8) is fixed at the end of the connecting pipe (7), and the upper end surface of the suction cup (8) is sucked and connected to a supporting mechanism (9), and an unlocking mechanism (10) is fixed on one side of the sleeve (1), and the unlocking mechanism (10) passes through the side wall of the sleeve (1) and is snap-connected to the supporting mechanism (9); Wherein, the supporting mechanism (9) comprises: A ventilation pipe (901), one side of which is provided with two first slots (902), the ventilation pipe (901) passing through the sleeve (1) and connected to the airtight cylinder (903); A pull rod (904), the pull rod (904) passes through the bottom of the airtight cylinder (903) and is connected to a piston (905), and the piston (905) is slidably connected in the airtight cylinder (903); The airbag (913) is symmetrically fixed on both sides of the top of the ventilation duct (901), and a first pull rope (915) is fixed on the top of the piston (905). The first pull rope (915) passes through the ventilation duct (901) and is connected to the second pull rope (916). Four third pull ropes (918) are fixed at the end of the second pull rope (916), and the ends of the four third pull ropes (918) are all fixed on the inner wall of the airbag (913).

2. A distraction device for bile duct anastomosis in rat liver transplantation according to claim 1, Features: The clamping and mounting mechanism (2) comprises: A support rod (201), wherein the support rod (201) is fixed to one side of the sleeve (1), and one end of the support rod (201) is connected to the toothed disc (203) via a first compression spring (202); A support sleeve (206), the support sleeve (206) is rotatably connected to the outer side of one end of the support rod (201), and a gear ring (207) is fixed on an inner wall of the support sleeve (206), and the gear ring (207) is meshingly connected to the gear disc (203); An extrusion rod (212), wherein the extrusion rod (212) passes through one side of the support sleeve (206), and a first pressing block (211) is fixed to one end of the extrusion rod (212), and a ball (213) is movably connected to the other end of the first pressing block (211), and the ball (213) abuts against the toothed disc (203); A bracket (208) is fixed to the bottom of the support sleeve (206), and one side of the bracket (208) is threadedly connected to a threaded rod (209), and the threaded rod (209) passes through one side of the bracket (208) and is rotatably connected to a clamping plate (210).

3. A distraction device for bile duct anastomosis in rat liver transplantation according to claim 2, Features: Limiting rods (204) are fixed on both sides of one end surface of the toothed disc (203), the first compression spring (202) is wrapped around the outside of the limiting rod (204), and limiting grooves (205) are symmetrically provided on both sides of one end surface of the support rod (201), and the limiting rod (204) is slidably connected in the limiting groove (205).

4. The distraction device for bile duct anastomosis in rat liver transplantation according to claim 1, Features: An air suction pipe (4) is fixed inside the side wall of the sleeve (1), and the air suction pipe (4) passes through the other side of the sleeve (1) and is connected to a suction pump (5).

5. The distraction device for bile duct anastomosis in rat liver transplantation according to claim 4, Features: An annular channel (6) is provided in the side wall of the sleeve (1), and the annular channel (6) is connected to the end of the air intake pipe (4), and the head end of the connecting pipe (7) is connected to the annular channel (6).

6. The distraction device for bile duct anastomosis in rat liver transplantation according to claim 1, Features: A second slot (906) is provided on one side of the pull rod (904), and the second slots (906) are distributed on the pull rod (904) at equal intervals.

7. The distraction device for bile duct anastomosis in rat liver transplantation according to claim 1, Features: A slide groove (907) is provided on one side of the airtight cylinder (903), and a limiting column (908) is fixed in the slide groove (907). A slider (909) is slidably connected in the slide groove (907). The limiting column (908) passes through the slider (909), and one side of the slider (909) is connected to a first locking block (911) via a connecting rope (910). The first locking block (911) is connected to the airtight cylinder (903) via a second compression spring (912), and the first locking block (911) is snap-connected in one of the second slots (906).

8. The distraction device for bile duct anastomosis in rat liver transplantation according to claim 1, Features: The airbag (913) is provided with a through hole (914), a limiting ring (917) is fixed in the through hole (914), and the second pull rope (916) passes through the limiting ring (917).

9. The distraction device for bile duct anastomosis in rat liver transplantation according to claim 1, Features: The unlocking mechanism (10) comprises: A groove (1001), wherein the groove (1001) is provided on one side of the sleeve (1), and a third compression spring (1002) is fixed in the groove (1001), a second pressing block (1003) is fixed at one end of the third compression spring (1002), and the second pressing block (1003) is slidably connected in the groove (1001); A first tooth plate (1004), wherein the first tooth plate (1004) is fixed on one side of the second pressing block (1003), and the bottom of the first tooth plate (1004) is meshingly connected with a gear (1005); A second tooth plate (1006), the second tooth plate (1006) is meshedly connected to the bottom of the gear (1005), and the second tooth plate (1006) passes through the inner wall of the sleeve (1) and is engaged and connected in one of the first slots (902).

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