CN112998794B

CN112998794B - Rat vein replacement quick-connection anastomosis sleeve

Info

Publication number: CN112998794B
Application number: CN202110210835.XA
Authority: CN
Inventors: 吕少诚; 任章勇; 贺强
Original assignee: Beijing Chaoyang Hospital
Current assignee: Beijing Chaoyang Hospital
Priority date: 2021-02-25
Filing date: 2021-02-25
Publication date: 2022-03-11
Anticipated expiration: 2041-02-25
Also published as: CN112998794A

Abstract

The application discloses rat vein replacement quick connect's anastomotic cannula, it includes: the fast connection's coincide sleeve pipe, outer tube, spout, slider, movable sleeve, inserted block, cavity, spacing axle, interior sleeve pipe, through-hole, spacing groove, connecting pipe, sealing washer, stopper, fixed block, sealed pad, trompil, end, vertical hole, joint, sealed lid, sealing ring, slot, stop collar, extrusion piece, external screw thread pipe, internal thread pipe and closing cap. The utility model provides a reasonable in structure reliably and make things convenient for rat vein replacement high-speed joint's identical sleeve pipe, adopt the sleeve pipe to realize vascular connection, the extrusion force that utilizes the production realizes being connected between blood vessel and the sleeve pipe, it is long when shortening the operation, make things convenient for sheathed tube high-speed joint, reduce the operation degree of difficulty of operation, the stability of guaranteeing to connect is simple quick when changing the dismantlement, can carry out the connection that vein blood vessel end or through two sections sheathed tube mutual butt joints realization vein blood vessel disconnection department.

Description

Rat vein replacement quick-connection anastomosis sleeve

Technical Field

The invention relates to a fast-connection anastomosis sleeve, in particular to a fast-connection anastomosis sleeve for rat vein replacement, and belongs to the technical field of anastomosis sleeve application.

Background

The anastomotic cannula is used for the anastomosis of vein, its function is to connect the function of vein, it uses the anastomat to connect, the anastomosis is the process that two fracture surfaces of the organ connect in medicine, the method uses the vascular anastomotic cannula of microsurgery to anastomose the blood vessel, when anastomosing the blood vessel, the blood vessel is put into the lumen of cannula through the surface longitudinal gap of cannula, turn over the tube wall of the broken end of the blood vessel and cover outside the end of cannula, then another blood vessel is put on the already turned over blood vessel wall, sew up evenly along the needle groove of the surface of cannula, the blood vessel after the anastomosis can be taken out through the surface longitudinal gap of cannula again, the mean anastomosis time of result experiment is 13.45 minutes, the control group is 25.40 minutes, through the statistical analysis, have the statistical significance, carry on the anastomosis of blood vessel, have improved the success rate of anastomosis and identical speed apparently, has improved the unobstructed rate, has reduced the leakage rate, can completely avoid the penetration and the suture of the front wall and the back wall, has stable anastomosis effect, can take out the sleeve and eliminates the side effect of the residual body.

In patent document "CN 107536631B a microvascular anastomat", the inner membrane of the microvascular is kept everted after anastomosis, the contact area between the anastomosis nail and the microvascular after operation is small, the risk of vascular embolism after operation is greatly reduced, but the anastomosis nail is difficult to take down after anastomosis, the blood vessel is easy to rupture during taking down, the death risk of rats is further increased, the time of the sleeve anastomosis and taking down process is long, and the operation difficulty is increased. At present, no anastomosis sleeve which is reasonable in structure, reliable, convenient and fast to connect and is used for rat vein replacement fast connection exists.

Disclosure of Invention

In order to solve the not enough of prior art, this application adopts multistage sleeve pipe to carry out vascular connection, has and connects quick advantage, connects the back and can stably dock with the blood vessel, can realize sheathed tube quick dismantlement, and convenient operation reduces the operation degree of difficulty, solves and causes the long problem of operation time when utilizing the anastomotic nail to connect, also is difficult to realize the sheathed tube simultaneously and takes off.

More in order to solve the problem among the prior art: the two sections of sleeves are adopted to realize butt joint, so that the operation flow can be simplified while the blood vessels are connected, the sleeves are convenient to connect, the good sealing effect is realized, and the stable connection of the inner sleeves of the vein blood vessels of the rat can be realized.

Further in order to solve the problems in the prior art: can realize the bushing of vein blood vessel end, use when also being applicable to two sections blood vessels butt joints, have the infusion function after bushing simultaneously, accessible sleeve pipe department realizes venous transfusion, improves the sleeve pipe practicality.

In order to solve the deficiencies in the prior art, the present application provides a rat vein replacement quick connect anastomosis cannula comprising: the device comprises an outer sleeve, an inner sleeve, a tip, a limiting sleeve, an extrusion block and an external threaded pipe; the inner part of the outer sleeve is sleeved with the inner sleeve through threads, the end part of the inner sleeve is fixedly connected with the end head, the limiting sleeve is movably sleeved with the surface of the outer sleeve, the end part of the outer sleeve is fixedly connected with an extrusion block, and the outer threaded pipe is fixedly connected with the side wall of the end head; the utility model discloses a sealing gasket, including endotheca intraduct and connecting pipe sliding connection, the connecting pipe both ends respectively with sealing washer and fixed block fixed connection, fixed block inner wall rigid coupling has sealed the pad, end one side is equipped with the external screw thread pipe, the internal and internal thread pipe thread connection of external screw thread, the internal portion of external screw thread pipe and internal thread all with closing cap threaded connection.

Furthermore, one end of the outer sleeve is of a circular structure, a sliding groove is formed in the surface of the other end of the outer sleeve, the inside of the sliding groove is connected with a sliding block in a sliding mode, the sliding block is fixedly connected with the inner wall of the movable sleeve, the movable sleeve is connected with the surface of the outer sleeve in a sliding mode, and the movable sleeve extends to the outer side of one end of the outer sleeve.

Further, the movable sleeve cross-section is ring structure, a plurality of inserted block, every are evenly equipped with at a movable sleeve side edge the inserted block both ends all are the arc structure, the movable sleeve contact has the end lateral wall, a plurality of slot has been seted up to the end lateral wall, a plurality of the slot distributes for circular structure, every the inserted block all corresponds each other with the slot, every the slot is inside all to be pegged graft fixedly with the inserted block.

Further, the inside cavity that is formed with of outer tube, the inside and spacing axle fixed connection of cavity, spacing axle is located outer tube one side, outer tube and spacing axle all run through with the connecting pipe and peg graft, the connecting pipe is hollow structure inside the sealing washer of connecting pipe and its tip all extended to the through-hole that interior sleeve pipe was seted up, the sealing washer is ring structure and is located connecting pipe one end edge, connecting pipe and sealing washer communicate each other, sealing washer and through-hole inner wall laminating sliding connection.

Further, connecting pipe surface and stopper fixed connection, the quantity of stopper is two and mutual symmetric distribution, stopper and spacing inslot portion sliding connection, the spacing groove be located interior sleeve pipe one end and communicate with the through-hole, the spacing groove is L shape structure, the stopper with spacing inslot portion joint.

Further, the fixed block cross-section is the arc structure, the fixed block is located inside the extrusion piece, the fixed block inner wall is equipped with the sealed pad of annular structure, the trompil has been seted up at the fixed block middle part, trompil and connecting pipe intercommunication sealed pad is connected with the laminating of outer tube surface, the radian of sealed pad and fixed block is the same with the radian of outer tube.

Further, outer tube one end is equipped with two extrusion pieces, two the extrusion piece shape is the same, two the extrusion piece all is the rubber material, two the mutual symmetric distribution of extrusion piece, two the extrusion piece all is half-circle ring structure, two laminate each other between the extrusion piece, the extrusion piece inner wall is oval structure, the contact of extrusion piece inner wall has the fixed block, the extrusion piece is located between fixed block and the stop collar.

Furthermore, the limiting sleeve is of a circular ring structure, a space is arranged between the limiting sleeve and the outer sleeve to enable the vein to be sleeved, the diameter of the outer sleeve is the same as that of the extrusion block, and the side wall of the extrusion block is attached to the wall of the vein.

Furthermore, a vertical hole is formed in one side of the end head, a through hole communicated with the inner sleeve is formed in the middle of the end head, the through hole is communicated with the vertical hole, the through hole and the vertical hole are distributed perpendicularly, the surface of the end head is fixedly connected with the connector, a sealing cover is fixedly connected to the top of the connector, the sealing cover is made of rubber, the diameter of the sealing cover is larger than that of the connector, and the connector is communicated with the vertical hole.

Further, outer threaded pipe and internal thread pipe all are the circular ring column structure, outer threaded pipe and internal thread pipe are connected with two ends respectively, the diameter of outer threaded pipe is greater than the diameter of internal thread pipe, outer threaded pipe and internal thread pipe all contact there is the end lateral wall, the inside closing cap of outer threaded pipe and internal thread pipe all contacts there is the sealing ring, the closing cap is circular structure, the sealing ring with end one side middle part fixed connection, the sealing ring communicates with the through-hole each other, the sealing ring is connected with the inside gomphosis of through-hole, and is adjacent laminate each other between the sealing ring and connect.

The application has the advantages that: the utility model provides a rat vein replacement high-speed joint's that rational in infrastructure is reliable and make things convenient for high-speed joint identical sleeve pipe, it adopts the cup joint formula sleeve pipe to realize vascular connection, utilize the extrusion force that produces to realize being connected between blood vessel and the sleeve pipe, need not to coincide the connection of nail when the sleeve pipe coincide, bring the convenience for identical sheathed tube high-speed joint and dismantlement, it is long greatly to shorten the operation, convenient sheathed tube high-speed joint during the operation, reduce the risk and the operation degree of difficulty of operation, and can not cause the damage to vein, guarantee that the stability of connecting is simple quick when changing the dismantlement, and simultaneously, can carry out vein blood vessel end or realize the connection of vein blood vessel disconnection department through the mutual butt joint of two sections sheathed tubes, be applicable to the operation under the multiple condition, can carry out venous transfusion in the sleeve pipe connection department, improve identical sheathed tube practicality.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

FIG. 1 is a schematic diagram of a rat vein replacement quick connect anastomosis cannula according to an embodiment of the present application;

FIG. 2 is a schematic view of a first perspective structure of the embodiment shown in FIG. 1;

FIG. 3 is a partial front view of the embodiment of FIG. 2 with the header attached;

FIG. 4 is a schematic perspective view of the embodiment shown in FIG. 2;

FIG. 5 is a schematic diagram of the embodiment of FIG. 2 showing the side view of the extrusion block;

FIG. 6 is a schematic side view of the embodiment of FIG. 2 at the tip;

FIG. 7 is a perspective view of the embodiment of FIG. 2 with the inner sleeve in position;

fig. 8 is a schematic perspective view of the embodiment of fig. 2 at the tip.

FIG. 9 is a side view of the embodiment of FIG. 2 showing the structure of the removable cover;

FIG. 10 is a schematic perspective view of the embodiment of FIG. 1 at the location of the insert;

FIG. 11 is a schematic diagram of the venous vascular connection of a rat in the example shown in FIG. 1.

The meaning of the reference symbols in the figures:

100. the fast connection anastomosis sleeve comprises a 101 outer sleeve, 1011, a sliding groove, 1012, a sliding block, 1013, a movable sleeve, 1014, an insertion block, 1015, a cavity, 1016, a limiting shaft, 102, an inner sleeve, 1021, a through hole, 1022, a limiting groove, 1023, a connecting pipe, 1024, a sealing ring, 1025, a limiting block, 1026, a fixing block, 1027, a sealing gasket, 1028, an opening, 103, a head, 1031, a vertical hole, 1032, a connector, 1033, a sealing cover, 1034, a sealing ring, 1035, an insertion groove, 104, a limiting sleeve, 105, an extrusion block, 106, an external threaded pipe, 1061, an internal threaded pipe, 1062 and a sealing cover.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1 to 10, a quick connect anastomosis sleeve 100 includes: an outer sleeve 101, an inner sleeve 102, a tip 103, a stop collar 104, an extrusion block 105 and an external threaded tube 106.

Referring to fig. 1 to 3, as a preferred scheme, the inner sleeve 102 is sleeved with the outer sleeve 101 in a threaded manner for realizing the connection between the outer sleeve 101 and the inner sleeve 102, when the anastomosis sleeve is connected, the end 103 is rotated to drive the inner sleeve 102 to rotate inside the outer sleeve 101, so that the inner sleeve 102 moves outwards, and further drives the connecting pipe 1023 connected with the inner sleeve 102 to rotate and move, the moving of the connecting pipe 1023 drives the fixing block 1026 to move, so that the fixing pad 1027 is pressed against the surface of the outer sleeve 101, the end of the inner sleeve 102 is fixedly connected with the end 103, the end 103 is used for being connected with the inner sleeve 102, which not only plays a role in guiding fluid during infusion and is convenient for butt joint between two anastomosis sleeves, and can be quickly connected according to different use conditions, the position-limiting sleeve 104 is movably sleeved with the surface of the outer sleeve 101, and the position-limiting sleeve 104 is used for limiting the vein, when in connection, the limiting sleeve 104 is sleeved on the surface of a vein, the outer sleeve 101 is moved to the inside of the vein, the vein is compressed through the limiting sleeve 104 and the outer sleeve 101, and quick connection is convenient to carry out, the end part of the outer sleeve 101 is fixedly connected with the extrusion block 105, the outer threaded pipe 106 is fixedly connected with the side wall of the end head 103, the edge of the fixing block 1026 abuts against the extrusion block 105 when moving, the extrusion block 105 is pushed to bend outwards to deform, the vein abuts against the extrusion block 105, and the vein is compressed inside the limiting sleeve 104, so that quick connection of the vein is realized.

Referring to fig. 1 to 2 and fig. 7, as a specific solution, the inside of the inner sleeve 102 is slidably connected with a connecting tube 1023 for moving the connecting tube 1023 inside the inner sleeve 102, the connecting tube 1023 drives the fixing block 1026 to move through the connecting tube 1023, and the connecting tube 1023 and the fixing block 1026 are communicated with each other to perform an infusion function, so that the infusion can be performed through the anastomosis sleeve, thereby improving the practicability of the anastomosis sleeve, two ends of the connecting tube 1023 are fixedly connected with a sealing ring 1024 and the fixing block 1026 respectively, the sealing ring 1024 performs a sealing function between the connecting tube 1023 and the inner sleeve 102, the sealing function can be always performed when the connecting tube 1023 moves, thereby preventing the leakage problem during the infusion, a sealing gasket 1027 is fixedly connected to the inner wall of the fixing block 1026, an external thread tube 106 is arranged on one side of the tip 103, the inside of the external thread tube 106 is in threaded connection with an internal thread 1061, and both the

internal thread

106 and 1061 are in threaded connection with a sealing cap 1062, the sealed 1027 that fills up is used for laminating with the surface of outer tube 101, leakproofness when guaranteeing fixed block 1026 and outer tube 101 to connect, external screw thread pipe 106 and internal thread pipe 1061 coincide the sleeve pipe with a set of respectively and are connected, can carry out the exclusive use respectively, be applicable to the lug connection when vein blood vessel is terminal, when the vein of connecting the disconnection, earlier through external screw thread pipe 106 and internal thread pipe 1061 with two sets of sleeves that coincide connect, again with two sleeves that coincide respectively with vein's both ends be connected, realize being connected between the vein, improve the sheathed tube practicality that coincide, can carry out different vein's high-speed joint, and easy operation is convenient, shorten the length of operation.

Referring to fig. 2 to 4, as an expansion scheme, one end of the outer sleeve 101 is a circular structure, which is convenient to attach to the fixed block 1026, and a sealing gasket 1027 is disposed therebetween, which can improve the sealing performance during attachment and ensure the quality during connection, a sliding groove 1011 is disposed on the surface of the other end of the outer sleeve 101, the inside of the sliding groove 1011 is slidably connected to a sliding block 1012, the sliding block 1012 is fixedly connected to the inner wall of a movable sleeve 1013, the movable sleeve 1013 is slidably connected to the surface of the outer sleeve 101, the movable sleeve 1013 extends to the outside of one end of the outer sleeve 101, the sliding groove 1011 is used for movement of the sliding block 1012, which can realize movement of the movable sleeve 1013 on the surface of the outer sleeve 101, after the rotating end 103 presses the vein against the inner wall of the position-limiting sleeve 104, the sliding block 1012 moves to the rightmost inside the sliding groove 1011 by moving the movable sleeve 1013, the movable sleeve 1013 drives an insertion block on one side thereof to be inserted into the insertion groove 1035, so as to realize position limitation of the outer sleeve 101 and the end 103, the slider 1012 and the sliding groove 1011 restrict the relative rotation between the outer tube 101 and the inner tube 102 after the operation, thereby ensuring the stability of the connection between the outer tube 101 and the inner tube 102.

Referring to fig. 1 to 3, 6 and 9 to 10, as a specific solution, a cross section of a movable sleeve 1013 is a circular structure, a plurality of insertion blocks 1014 are uniformly arranged at an edge of one side of the movable sleeve 1013, the insertion blocks 1014 and the insertion slots 1035 are arranged to limit the position between the tip 103 and the outer sleeve 101, stable connection can be realized after the inner sleeve 102 is rotated, both ends of each insertion block 1014 are arc-shaped structures, the arc-shaped structures arranged at both ends of the insertion block 1014 facilitate the connection between the insertion block 1014 and the insertion slot 1035, the stability after the insertion and fixation is improved, the position limit between the outer sleeve 101 and the inner sleeve 102 can be realized, the movable sleeve 1013 contacts the side wall of the tip 103 after the movement, at this time, the plurality of insertion blocks 1014 are all clamped in the fixed insertion slots 1035, the stability during the connection is improved, the tip 103 is limited by the movable sleeve 1013, and the rotation is prevented, the side wall of the head 103 is provided with a plurality of slots 1035, the slots 1035 are distributed in a circular structure, each plug block 1014 corresponds to the slot 1035, and the inside of each slot 1035 is fixedly inserted into the plug block 1014 for the plug block 1014 to be inserted into the slot 1035.

Referring to fig. 2 to 3 and fig. 7, according to the scheme, a cavity 1015 is formed inside the outer sleeve 101, the cavity 1015 is fixedly connected with a limiting shaft 1016, the cavity 1015 is used for moving the inner sleeve 102, the anastomosis sleeve is connected with the vein through the relative rotation between the outer sleeve 101 and the inner sleeve 102, the limiting shaft 1016 is positioned at one side of the outer sleeve 101, the outer sleeve 101 and the limiting shaft 1016 are both inserted with a connecting pipe 1023 in a penetrating manner, the limiting shaft 1016 is used for stably moving the connecting pipe 1023, so that the connecting pipe 1023 can conveniently move inside the limiting shaft 1016, the connecting pipe 1023 is a hollow structure, a sealing ring 1024 at the end of the connecting pipe 1023 extends into a through hole 1021 formed in the inner sleeve 102, the connecting pipe 1023 and a fixing block 1026 rotate in a mutual communication manner, so that the infusion can be conveniently conveyed into the vein during the infusion, the sealing ring 1024 is in a circular ring structure and is positioned at one end edge of the connecting pipe 1023, connecting pipe 1023 and sealing washer 1024 communicate each other, sealing washer 1024 and through-hole 1021 inner wall laminating sliding connection, sealing washer 1024 is used for realizing the sealing between connecting pipe 1023 and interior sleeve pipe 102, and sealing state can be guaranteed when the connecting pipe 1023 removes.

Referring to fig. 2 and 7, as an expanded solution, the surface of the connecting tube 1023 is fixedly connected with the limiting blocks 1025, the number of the limiting blocks 1025 is two and the two limiting blocks 1025 are symmetrically distributed, the limiting blocks 1025 are used for moving inside the limiting grooves 1022, the limiting blocks 1025 are slidably connected with the inside of the limiting grooves 1022, the limiting grooves 1022 are located at one end of the inner sleeve 102 and are communicated with the through holes 1021, the limiting grooves 1022 are L-shaped structures, the limiting blocks 1025 are clamped with the limiting grooves 1022, the limiting blocks 1025 and the limiting grooves 1022 are arranged for realizing the connection between the connecting tube 1023 and the inner sleeve 102, the connecting tube 1023 is inserted inside the inner sleeve 102 during the connection, the limiting blocks 1025 is rotated to a certain angle after moving inside the limiting grooves 1025, the limiting blocks 1025 are moved to the limiting grooves 1022, the connecting tube 1023 is driven to rotate and move simultaneously by the cooperation of the limiting blocks 1025 and the limiting grooves 1022 when the connecting tube 1023 drives the extrusion block 105, make the joint between stopper 1025 and the spacing groove 1022, prevent that connecting pipe 1023 not hard up problem from appearing, adopt the mode of assembling to assemble between each part, connect when conveniently using, also be favorable to carrying out quick dismantlement.

Referring to fig. 2 to 3, as a specific scheme, the cross section of the fixing block 1026 is an arc-shaped structure, the fixing block 1026 is located inside the extrusion block 105, a sealing gasket 1027 with an annular structure is arranged on the inner wall of the fixing block 1026, an opening 1028 is formed in the middle of the fixing block 1026, the opening 1028 is communicated with the connecting pipe 1023, the sealing gasket 1027 is connected with the surface of the outer sleeve 101 in an attaching manner, the radians of the sealing gasket 1027 and the fixing block 1026 are the same as the radians of the outer sleeve 101, the fixing block 1026 is arranged in an arc-shaped structure to be conveniently attached to one end surface of the outer sleeve 101 in a sealing manner, the sealing performance is improved, meanwhile, the fixing block 1026 can be in contact with the extrusion block 105 when moving, the inner wall of the extrusion block 105 is an oval structure, so that the extrusion block 105 can be bent and deformed towards the edge, and effective contact between the extrusion block 105 and the vein vessel is ensured.

Referring to fig. 2 and 4 to 5, as a specific scheme, two extrusion blocks 105 are arranged at one end of an outer sleeve 101, the two extrusion blocks 105 are the same in shape, the two extrusion blocks 105 are made of rubber, so that extrusion deformation of the extrusion blocks 105 can be realized, the vein blood vessel is conveniently pressed on the inner wall of a limiting sleeve 104 by the extrusion blocks 105, the two extrusion blocks 105 are symmetrically distributed with each other, the two extrusion blocks 105 are both in a semicircular structure, the two extrusion blocks 105 are attached to each other, the inner wall of the extrusion block 105 is in an elliptical structure, a fixed block 1026 is contacted with the inner wall of the extrusion block 105, the extrusion block 105 is located between the fixed block 1026 and the limiting sleeve 104, when the fixed block 1026 moves, the edge of the fixed block slides on the inner wall of the extrusion block 105, and the extrusion block 105 is deformed by the movement of the fixed block 1026 to complete quick connection with the vein blood vessel.

Referring to fig. 1 to 2 and fig. 5 and 9, as an expansion scheme, the stop collar 104 is a circular ring structure, a space is arranged between the stop collar 104 and the outer sleeve 101 to enable the vein to be sleeved, the stop collar 104 is firstly sleeved on the surface of the vein, the outer sleeve 101 is inserted into the blood vessel, then the stop collar 104 is moved to the surface of the outer sleeve 101 to enable the vein to be located between the outer sleeve 101 and the stop collar 104, the connection between the anastomosis sleeve and the blood vessel is realized through the extrusion block 105, the operation is simple and convenient, the operation difficulty is reduced, the diameters of the outer sleeve 101 and the extrusion block 105 are the same, and the side wall of the extrusion block 105 is attached to the wall of the vein.

Referring to fig. 2 to 3, according to the scheme, a vertical hole 1031 is formed at one side of the end head 103, a through hole 1021 communicated with the inner cannula 102 is formed in the middle of the end head 103, the vertical hole 1031 is used for enabling liquid to enter the through hole 1021 during infusion, the liquid passes through the through hole 1021 and is discharged from the opening 1028, venous infusion is achieved, venous infusion can be achieved on the anastomosis cannula without venipuncture, the through hole 1021 and the vertical hole 1031 are mutually communicated, the through hole 1021 and the vertical hole 1031 are mutually and vertically distributed, the surface of the end head 103 is fixedly connected with a connector 1032, a sealing cover 1033 is fixedly connected to the top of the connector 1032, the sealing cover 1033 is made of rubber, the diameter of the sealing cover 1033 is larger than that of the connector 1032, the connector 1032 is mutually communicated with the vertical hole 1031, the connector 1032 is used for connecting with the sealing cover 1033, a needle is inserted through the sealing cover 1033 during venous infusion, and venous infusion can be directly conducted through the anastomosis cannula, the practicability of the anastomotic sleeve is improved.

Referring to fig. 1 to 3 and 8, as a specific scheme, the external threaded tube 106 and the internal threaded tube 1061 are both circular ring structures, the external threaded tube 106 and the internal threaded tube 1061 are respectively connected with two end heads 103, the diameter of the external threaded tube 106 is larger than that of the internal threaded tube 1061, the external threaded tube 106 and the internal threaded tube 1061 are both in contact with the side wall of the end head 103, the sealing rings 1034 are both in contact with the sealing covers 1062 inside the external threaded tube 106 and the internal threaded tube 1061, the sealing covers 1062 are circular structures, the sealing rings 1034 are fixedly connected with the middle parts of one sides of the end heads 103, the sealing rings 1034 are communicated with the through holes 1021, the sealing rings 1034 are in embedded connection with the inside of the through holes, the adjacent sealing rings 1034 are in attached connection, the external threaded tube 106 and the internal threaded tube 1061 are respectively connected with the two end heads 103 of the anastomotic cannula, direct connection can be performed when the ends of the venous vessel are connected, at this time, the sealing covers 1062 are screwed tightly inside the external threaded tube 106 or the internal threaded tube 1021, the sealing caps 1062 are screwed tightly and abut against the sealing rings 1034 to seal the end 103, one end of the through hole 1021 is blocked, the venous transfusion flows into the venous blood vessel through the other end of the through hole 1021, when the disconnected venous blood vessel is connected, the two sealing caps 1062 are taken out from the external threaded pipe 106 and the internal threaded pipe 1061 respectively, the external threaded pipe 106 and the internal threaded pipe 1061 are connected with each other, the two sealing rings 1034 are contacted with each other after the connection and the fixation, the sealing of the connection part is realized, the disconnected part of the venous blood vessel is connected with the two anastomotic sleeves respectively, the venous blood vessel is quickly connected through the two anastomotic sleeves, the venous transfusion is also convenient, the movable sleeve 1013 is moved during the disassembly, the end 103 and the inner sleeve 102 are rotated after the insertion block 1014 is separated from the insertion slot 1035, the separation between the inner sleeve 102 and the outer sleeve 101 is realized, and the anastomotic sleeve is taken down.

As shown in fig. 11, as a preferable scheme, a donor vein segment from another rat is set as G, the donor vein segment G is pulled out from the through hole 1021 and the connecting tube 1023, and is reversely folded and sleeved outside the extrusion block 105, the donor vein segment G is inserted into a vein segment at the vein broken end of a receptor rat, the receptor vein segment is set as S, when the extrusion block 105 deforms, the reverse folded edge of the donor vein segment G can be contacted with the receptor vein segment S, and the donor vein segment G and the receptor vein segment S are jointly extruded and attached to the inner wall of the limiting sleeve 104, so that the purpose of blood vessel connection is achieved.

The technical scheme of this application, adopt multistage sleeve pipe to realize venous vessel's extrusion, cooperation extrusion piece 105 and stop collar 104 contact venous vessel realize connecting fixedly, need not to use the staple to connect and cause the long scheduling problem of operation time, only need cup joint stop collar 104 on the blood vessel surface, stretch into venous vessel blood intraduct back with outer tube 101 again and move fixed block 1026, support extrusion piece 105 through fixed block 1026 and realize venous vessel's connection, convenient quick operation, and it is effective to connect stably, can use for a long time, can reduce the damaged risk of blood vessel, can conveniently spacing inner tube 102 and end 103 simultaneously, can fix fast after realizing connecting, guarantee connection stability simultaneously, only need to remove movable sleeve 1013 can realize quick fixed, can shorten the operation length greatly, guarantee that the operation goes on smoothly.

Meanwhile, the sleeve butt joint function is realized, the quick connection can be realized when the tail end of the vein vessel is connected, the anastomosis between the sleeve and the vessel can be realized by adopting the mutual connection between the sleeves when the butt joint of the disconnected part of the vein vessel is carried out, the connection between the vessels can be realized, the connection between the sleeves is quick, the quick connection can be conveniently carried out by adopting a threaded connection mode, the operation progress is ensured, and the operation difficulty is reduced; meanwhile, the infusion can be carried out at the position of the sleeve, a connector 1032 is reserved for facilitating the infusion of the vein, and the practicability of the anastomotic sleeve is improved.

The foregoing is merely exemplary of the present application and is not intended to limit the present application, which may be modified or varied by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An anastomosis sleeve for rat vein replacement quick connection is characterized in that:

the quick connect anastomosis sleeve includes: the device comprises an outer sleeve, an inner sleeve, a tip, a limiting sleeve, an extrusion block and an external threaded pipe;

the inner part of the outer sleeve is sleeved with the inner sleeve through threads, the end part of the inner sleeve is fixedly connected with the end head, the limiting sleeve is movably sleeved with the surface of the outer sleeve, the end part of the outer sleeve is fixedly connected with an extrusion block, and the outer threaded pipe is fixedly connected with the side wall of the end head;

the utility model discloses a sealing gasket, including endotheca intraduct and connecting pipe sliding connection, the connecting pipe both ends respectively with sealing washer and fixed block fixed connection, fixed block inner wall rigid coupling has sealed the pad, end one side is equipped with the external screw thread pipe, the internal and internal thread pipe thread connection of external screw thread, the internal portion of external screw thread pipe and internal thread all with closing cap threaded connection.

2. The rat vein replacement quick connect anastomosis sleeve according to claim 1, wherein: one end of the outer sleeve is of a circular structure, a sliding groove is formed in the surface of the other end of the outer sleeve, the inside of the sliding groove is connected with a sliding block in a sliding mode, the sliding block is fixedly connected with the inner wall of the movable sleeve, the movable sleeve is connected with the surface of the outer sleeve in a sliding mode, and the movable sleeve extends to the outer side of one end of the outer sleeve.

3. The rat vein replacement quick connect anastomosis sleeve according to claim 2, wherein: the movable sleeve cross-section is ring structure, a plurality of inserted block, every are evenly equipped with at a movable sleeve side edge the inserted block both ends all are the arc structure, the movable sleeve contact has the end lateral wall, a plurality of slot, a plurality of the slot has been seted up to the end lateral wall the slot distributes for circular structure, every the inserted block all corresponds each other with the slot, every the slot is inside all to be pegged graft fixedly with the inserted block.

4. The rat vein replacement quick connect anastomosis sleeve according to claim 1, wherein: the utility model discloses a sealing device, including outer tube, connecting pipe, sealing washer, connecting pipe, sealing washer and through-hole inner wall laminating sliding connection, the inside cavity that is formed with of outer tube, inside and spacing axle fixed connection of cavity, spacing hub bit is in outer tube one side, outer tube and spacing axle all run through with the connecting pipe and peg graft, the connecting pipe is hollow structure inside the sealing washer of connecting pipe and its tip all extends to the interior through-hole that the sleeve pipe was seted up, the sealing washer is ring structure and is located connecting pipe one end edge, connecting pipe and sealing washer communicate each other, sealing washer and through-hole inner wall laminating sliding connection.

5. The rat vein replacement quick connect anastomosis sleeve according to claim 4, wherein: the connecting pipe surface and stopper fixed connection, the quantity of stopper is two and mutual symmetric distribution, stopper and spacing inslot portion sliding connection, the spacing groove be located interior sleeve pipe one end and communicate with the through-hole, the spacing groove is L shape structure, the stopper with spacing inslot portion joint.

6. The rat vein replacement quick connect anastomosis sleeve according to claim 1, wherein: the fixed block cross-section is the arc structure, the fixed block is located inside the extrusion piece, the fixed block inner wall is equipped with the sealed pad of annular structure, the trompil has been seted up at the fixed block middle part, trompil and connecting pipe intercommunication sealed pad is connected with the laminating of outer tube surface, the radian of sealed pad and fixed block is the same with the radian of outer tube.

7. The rat vein replacement quick connect anastomosis sleeve according to claim 1, wherein: outer tube one end is equipped with two extrusion pieces, two the extrusion piece shape is the same, two the extrusion piece all is the rubber material, two the mutual symmetric distribution of extrusion piece, two the extrusion piece all is half circular ring structure, two laminate each other between the extrusion piece, the extrusion piece inner wall is oval structure, the contact of extrusion piece inner wall has the fixed block, the extrusion piece is located between fixed block and the stop collar.

8. The rat vein replacement quick connect anastomosis sleeve according to claim 1, wherein: the limiting sleeve is of a circular ring structure, a space is arranged between the limiting sleeve and the outer sleeve to enable the vein to be sleeved, the diameter of the outer sleeve is the same as that of the extrusion block, and the side wall of the extrusion block is attached to the wall of the vein.

9. The rat vein replacement quick connect anastomosis sleeve according to claim 1, wherein: the novel connector is characterized in that a vertical hole is formed in one side of the end head, a through hole communicated with the inner sleeve is formed in the middle of the end head, the through hole is communicated with the vertical hole, the through hole and the vertical hole are distributed in a mutually perpendicular mode, the surface of the end head is fixedly connected with a connector, a sealing cover is fixedly connected to the top of the connector and made of rubber, the diameter of the sealing cover is larger than that of the connector, and the connector is communicated with the vertical hole.

10. The rat vein replacement quick connect anastomosis sleeve according to claim 1, wherein: outer threaded pipe and internal thread pipe all are the circular ring column structure, outer threaded pipe and internal thread pipe are connected with two ends respectively, the diameter of outer threaded pipe is greater than the diameter of internal thread pipe, outer threaded pipe and internal thread pipe all contact there is the end lateral wall, outer threaded pipe and the inside closing cap of internal thread pipe all contact the sealing ring, the closing cap is circular structure, the sealing ring with end one side middle part fixed connection, the sealing ring communicates with the through-hole each other, the sealing ring is connected with the inside gomphosis of through-hole, and is adjacent laminating each other between the sealing ring is connected.