CN115153706A - Vascular side anastomosis bridging device - Google Patents

Abstract

The invention discloses a vascular end-to-end anastomosis bridging device which comprises a first base and a second base, wherein the first base is provided with a first channel, the second base is provided with a second channel, and a side opening is formed in the side of the first channel; the side opening is provided with a first end part, and the second channel is provided with a second end part pressed towards the first end part; a first annular air passage is arranged in the first base, a first external air passage is arranged to be communicated with the outside, a plurality of first auxiliary air passages are arranged between the first end part and the first annular air passage, and the first external air passage is detachably connected with a first guide pipe; the second base inner ring is equipped with second annular air flue to be equipped with the external air flue of second and external intercommunication, the second tip is equipped with the vice air flue of a plurality of second to the second annular air flue between, the second is outer to be connected the air flue and can be dismantled even has the second pipe. The first conduit and the second conduit are commonly connected to a vacuum pump. The invention has convenient, rapid and accurate bridging, does not reduce the diameter of the blood vessel after bridging, does not block the blood vessel, and is specially used for anastomosis and bridging of the end sides of the blood vessel.

Description

Blood vessel end-to-end anastomosis bridging device

Technical Field

The invention belongs to the field of medical instruments, and particularly relates to a vascular end-to-side anastomosis bridging device.

Background

In the current medical operation, a blood vessel connection operation is encountered, and two broken blood vessels are connected, or a lateral blood vessel is connected to a main blood vessel. The connection of blood vessels is usually by surgical suture, but the difficulty of surgical suture is: the microvasculature is tiny, and fractures of the blood vessel and the parts near the fractures can be atrophied, so that a doctor cannot control the needle inserting strength and the needle inserting depth of the microvasculature well, the needle inserting interval of each needle is not controlled well, the microvasculature is frequently injured by mistake, the needle and thread sewing operation difficulty is high, the requirement on the skill of the doctor is high, and the microvasculature after being sewn is prone to two problems of unsmooth blood flow and leakage.

Comparison document 1: in chinese publication No. CN204049727U, entitled "a vascular connection tube", a device for bridging two blood vessels is disclosed, which comprises: a connect the body for connecting blood vessel is equipped with a plurality of barb circles around connecting the body, and the barb circle includes a plurality of barbs that parallel, and the direction orientation of barb passes through the cross section at connecting the body center, barb and the contained angle of connecting the body axis are alpha, and alpha is the acute angle, and connecting the body is polylactic acid connecting tube body, the barb is the polylactic acid barb. Two blood vessels that will connect are established respectively at vascular connecting pipe both ends to make two blood vessel knecks align can, the setting up of barb makes the blood vessel can not the landing, and connection speed is fast, and the cost time is few, and adopts the polylactic acid material, can directly degrade in blood, need not again perform the operation and get the pipe.

The principle of the reference 1 is that two opposite blood vessels are sleeved on the connecting pipe together, and the two blood vessels are prevented from separating from each other by the barbs of the two blood vessels. But the technical defects are as follows: 1. the connecting pipe body is arranged in the blood vessel, so that a blood vessel flow passage is narrowed, the transportation function of the blood vessel is weakened, and the risk of cardiovascular diseases is increased; 2. due to the shrinking property of the blood vessel, if the blood vessel is smoothly sleeved into the connecting tube body, the diameter of the end part of the connecting tube body is at least reduced, so that the blood vessel flow passage is further narrowed; 3. the two blood vessels are only fixed on the connecting pipe and are not actually connected, and after the connecting pipe is degraded, the blood vessels which are not connected are still disconnected.

Comparison document 2: in chinese patent publication No. CN207804302U, entitled "a blood vessel connection device", a blood vessel connection device is disclosed, which has a structure similar to that of reference 1. Comprises a connecting pipe main body and a connecting pipe conical interface; the main body of the connecting pipe is a hollow cylindrical pipe body and is divided into a direct connection type pipe and a three-way connection type pipe, the main body of the connecting pipe is processed by medical nano degradable polyfructose, the main body of the connecting pipe has transparent property, soft property, tensile and tough property, circular compression resistance and flat property and selectable degradation time limit property, the main body of the connecting pipe can be made into a plurality of diameter series models according to the required diameter, and the distance between the length of the main body of the connecting pipe and the center is 5cm; the conical connector of the connecting pipe is attached to the outer side of the main connector of the connecting pipe, a plurality of anti-slip grooves are formed in the periphery of the conical connector of the connecting pipe, and the far end of the conical connector of the connecting pipe is of an outward-contracted conical structure and is favorable for smoothly sleeving a blood vessel. When the blood vessel is connected, the cut ends of the blood vessel to be connected are only required to be cut off and connected in a sleeved mode through the conical interfaces of the connecting pipes until the cut ends of the blood vessel are matched, so that the blood vessel is convenient to suture by a suture line for a doctor. Its technical drawback is also the same as that of reference 1.

Comparison document 3: in a chinese patent with publication number CN202920259U and patent name "blood vessel socket", a blood vessel socket is disclosed, which is different from the comparison documents 1 and 2, the comparison document 3 is used for connecting a blood vessel and equipment, and specifically includes a circular tube socket connected with the blood vessel, a transition cover is arranged on the periphery of the blood vessel socket, a rubber band is sleeved on the transition cover, and the rubber band is in a closed ring shape. When the blood vessel plug is used, the blood vessel plug socket is inserted into a blood vessel until the front end of the blood vessel is completely plugged into the transition cover, then the rubber band is pushed forwards until the rubber band is pushed down from the transition cover, so that the rubber band is tightly clamped on the blood vessel, and the blood vessel plug socket are connected and fixed. The defects of the comparison folder 3 are still: 1. the connecting tube body is arranged in the blood vessel, so that a blood vessel flow passage is narrowed, the transportation function of the blood vessel is weakened, and the risk of cardiovascular diseases is increased; 2. because of the atrophic nature of the blood vessel, if the blood vessel is to be smoothly inserted into the connecting tube, the diameter of the end of the connecting tube is at least reduced, which further narrows the blood vessel flow path.

At present, the bridging difficulty of the section of the blood vessel is large, and the side cutting bridging is more difficult.

Disclosure of Invention

The present invention provides a blood vessel end-to-side anastomosis bridging device, which is convenient, fast and accurate in bridging, does not reduce the diameter of a blood vessel after bridging, and is specially used for blood vessel end-to-side anastomosis bridging.

The technical scheme adopted by the invention for solving the technical problems is as follows: a blood vessel side anastomosis bridging device comprises a first base and a second base, wherein the first base is provided with a first channel for a first blood vessel to pass through, the second base is provided with a second channel for a second blood vessel to pass through, and a side opening is arranged on the side of the first channel; the side opening is provided with a first end part, and the second channel is provided with a second end part pressed towards the first end part;

a first annular air passage is arranged in the first base, a first external air passage is arranged in the first base and communicated with the outside, a plurality of first auxiliary air passages are arranged between the first end part and the first annular air passage, and the first external air passage is detachably connected with a first guide pipe;

the second base inner ring is equipped with second annular air flue to be equipped with the external air flue of second and external intercommunication, the second tip is equipped with the vice air flue of a plurality of second to the second annular air flue between, the second is outer to be connected the air flue and can be dismantled even has the second pipe. The first and second conduits are commonly connected to a vacuum pump, which is conventional and not shown.

The use method of the device comprises the following steps: 1. loading a first blood vessel into the first passageway and a second blood vessel into the second passageway; 2. starting a vacuum pump, wherein in a first base, air with an opening at the side enters the vacuum pump through a first auxiliary air passage, a first annular air passage, a first external air passage and a first conduit in sequence, under the action of negative pressure, the side wall of a first blood vessel expands towards the opening at the side to form a bulge, the bulge is attached to the surface of a first end part, and at the moment, the bulge of the first blood vessel is annularly cut along the periphery of the first end part by using a scalpel to form a blood vessel opening; in the second base, using a tool to assist the expansion of the end part of the second blood vessel, and then sucking the end part of the second blood vessel to the second auxiliary air passage, thereby keeping the second blood vessel in an expanded state; 3. the first and second bases are combined, with the first end portion pointing towards the second end portion, until the two blood vessels complete an end-to-end anastomotic bridge.

The device does not occupy the space of the inner wall of the blood vessel after bridging, ensures that the blood vessel flow channel is smooth, can realize rapid bridging, does not need suture lines, does not need a super suture technology, and innovates the difficult problem of side-to-side bridging.

In a preferred scheme, the first end portion ring is provided with a plurality of first barbs, and the second end portion ring is provided with a plurality of second barbs. The first barb can keep the opening state of the first vessel incision for a long time after the first catheter is withdrawn; the second barb can maintain the expanded state of the second vessel end for a long time after the second catheter. The first barb can also pierce into the end of the second blood vessel, and the second barb can also pierce into the side incision edge of the first blood vessel, thereby enhancing the firmness of bridging the first blood vessel and the second blood vessel.

In a preferred embodiment, the first barb is angled toward the second base to prevent the first blood vessel from disengaging from the first barb, and the second barb is angled toward the first base to prevent the second blood vessel from disengaging from the second barb.

In a preferable scheme, the first base is further provided with a first sliding block and a second sliding block which are used for clamping one end of the first blood vessel, and a third sliding block and a fourth sliding block which are used for clamping the other end of the first blood vessel, so that the first blood vessel forms a closed section in the first channel, when the vacuum pump is started, the protruding form of the first blood vessel at the side opening is more remarkable, and more blood vessel walls can be attached to the first end portion conveniently.

In a preferred embodiment, the first base comprises a first flap and a second flap sandwiching a first blood vessel in half; the second base includes a third flap and a fourth flap sandwiching a second blood vessel in half. When installing first blood vessel, the first blood vessel is convenient for clip from side to half the first valve body and the second valve body that set up, and in the same way, the second blood vessel is convenient for clip from side to third valve body and fourth valve body, has avoided two blood vessels to cause the friction damage to the blood vessel outer wall when passing first passageway or second passageway like this.

In a preferred scheme, a first concave-convex clamping structure is arranged between the first petal body and the second petal body; a second concave-convex clamping structure is arranged between the third valve body and the first valve body; a third concave-convex clamping structure is arranged between the fourth valve body and the first valve body; a first screw is connected between the third petal body and the second petal body; and a second screw is connected between the fourth petal body and the second petal body. Suppose that first passageway sets up for the front and back, and side opening is the opening that makes progress, then after the installation is successful, first unsmooth joint structure has restricted the upper and lower back-and-forth movement of first lamella body and the second lamella body, and the removal of the first lamella body is not only prevented to unsmooth joint structure of second and first screw, still prevents the removal of the third lamella body, and the removal of the fourth lamella body is still prevented not only to the removal of the first lamella body of second unsmooth joint structure and second screw. The whole device can complete limiting and fixing.

In a preferred scheme, a sliding rail structure is arranged between the first base and the first sliding block, the second sliding block, the third sliding block and the fourth sliding block respectively, and the first sliding block, the second sliding block, the third sliding block and the fourth sliding block can move along the sliding rail structure.

In preferred scheme, the slide rail structure is the column guide slot that sets up on first lamella body and second lamella body to and set up the guide pillar on first slider, second slider, third slider and fourth slider respectively. The internal diameter of column guide slot slightly is less than screw thread external diameter to after removing first slider, second slider, third slider and fourth slider, the screw hole can be regarded as to the column guide slot, and the connection between the first lamella body and the second lamella body behind the set screw is more firm.

In a preferred scheme, the first end part is an inner conical surface which is concave towards the direction of the first channel, so that the blood vessel wall which is expanded and protruded at the side of the first blood vessel can be easily attached to the first end part, and the blood vessel attaching area is larger than that of the first end part of the non-inner conical surface; the second end part is an external conical surface, and the second blood vessel is easy to turn outwards and is sleeved on the external conical surface of the second end part because the end part of the second blood vessel is easy to turn outwards. But when the second end part is pressed on the first end part, the first blood vessel and the second blood vessel have larger contact surfaces to be butted, so that the bridging sealing performance is improved, and the healing success rate of the vascular tissues at the two ends is also improved.

In a preferred embodiment, the first barb is located between the first secondary airway and the first passage, and the first barb is configured to pierce the side wall of the first blood vessel when the side wall of the first blood vessel is attracted by the first secondary airway until the side wall of the first blood vessel abuts the first end.

The device can coexist with the bridged blood vessel for a long time, and can be detached or made of human degradable materials.

In summary, the present invention realizes the end-side fixation of the first blood vessel and the second blood vessel through the first channel in the first base and the second channel in the second base, and realizes the end-side bridging of the first blood vessel and the second blood vessel through the innovative structure of the first end portion and the second end portion. Compared with the prior art, the invention has convenient, rapid and accurate bridging, does not reduce the diameter of the blood vessel after bridging, does not block the blood vessel, and is specially used for anastomosis bridging at the end side of the blood vessel.

Drawings

FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic perspective view of FIG. 1;

FIG. 4 is an exploded schematic view of FIG. 3;

FIG. 5 is a schematic view of the first base structure of FIG. 4;

FIG. 6 is an exploded schematic view of FIG. 5;

FIG. 7 is a schematic view of the first barb and first secondary air passageway on the first end face of FIG. 6;

FIG. 8 is a schematic view of the second base structure of FIG. 4;

FIG. 9 is a schematic perspective view of the bottom view of FIG. 8;

FIG. 10 is an exploded schematic view of FIG. 9;

FIG. 11 is a schematic view of the second barb and second secondary air passage on the second end face of FIG. 9;

FIG. 12 isbase:Sub>A schematic view of the full section taken along A-A in FIG. 2;

FIG. 13 is an exploded schematic view of FIG. 12;

FIG. 14 is a schematic view of a first step of the method of using the first embodiment;

FIG. 15 is a schematic diagram of a second step of the method of using the first embodiment;

FIG. 16 is a third schematic diagram of a method of using the first embodiment;

FIG. 17 is a fourth step of the method of the first embodiment;

FIG. 18 is a schematic diagram of a fifth step of the method of the first embodiment;

FIG. 19 is a sixth step of the method of the first embodiment;

fig. 20 is a schematic illustration of the first and second blood vessels remaining after withdrawal of the first and second pedestals.

Detailed Description

Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

Fig. 1 to 20 are schematic structural views of the present invention.

Wherein the reference numerals are: the surgical knife comprises a first base 1, a first flap body 11, a second flap body 12, a first channel 13, a side opening 14, a first end 141, a columnar guide groove 15, a guide post 16, a second base 2, a third flap body 21, a fourth flap body 22, a second channel 23, a second end 231, a first external air passage 31, a first annular air passage 32, a first auxiliary air passage 33, a first conduit 34, a second external air passage 41, a second annular air passage 42, a second auxiliary air passage 43, a second conduit 44, a first blood vessel 51, a bulge 511, a second blood vessel 52, a first barb 61, a second barb 62, a first sliding block 71, a second sliding block 72, a third sliding block 73, a fourth sliding block 74, a first concave-convex clamping structure 81, a first clamping groove 811, a first clamping column 812, a second concave-convex clamping structure 82, a second clamping groove 821, a second clamping column 822, a third concave-convex clamping structure 83, a third clamping groove 831, a third clamping column 832, a first screw hole 84, a first screw hole 841, a second screw hole 85 and a surgical knife 851.

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 is noted that the term "comprises" and any variations thereof in the description and claims of this application and the above-described drawings are intended to cover non-exclusive inclusions, for example, an article comprising a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not explicitly listed or inherent to such article.

In the present application, the terms "upper", "lower", "left", "right", 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 invention and its embodiments and are not intended 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 meanings of these terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

Furthermore, the terms "disposed" and "connected" should be interpreted broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

It should be noted that, in the present application, the embodiments and features of the embodiments 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.

In a first embodiment, a blood vessel end-to-side anastomosis bridging device, as shown in fig. 1 to 4, comprises a first base 1 and a second base 2, wherein, as shown in fig. 4 to 6 and 12 to 13, the first base 1 is provided with a first channel 13 for a first blood vessel 51 to pass through, as shown in fig. 3 to 4 and 8 to 13, the second base 2 is provided with a second channel 23 for a second blood vessel 52 to pass through, as shown in fig. 4 to 7, a side opening 14 is arranged at the side of the first channel 13; the side opening 14 is provided with a first end portion 141, and the second duct 23 is provided with a second end portion 231 pressed toward the first end portion 141. An enlarged view of the first end portion 141 is shown in fig. 7, and an enlarged view of the second end portion 231 is shown in fig. 11;

as shown in fig. 6, 12 and 13, a first annular air passage 32 is arranged in the first base 1, and a first external air passage 31 shown in fig. 4, 12 and 13 is arranged to communicate with the outside, as shown in fig. 4 to 7, 12 and 13, a plurality of first auxiliary air passages 33 are arranged between the first end 141 and the first annular air passage 32, as shown in fig. 1 to 4, 12 and 13, and a first conduit 34 is detachably connected to the first external air passage 31;

as shown in fig. 10, 12 and 13, the second base 2 is provided with a second annular air passage 42 at an inner ring thereof, and is provided with a second external air passage 41 shown in fig. 8, 12 and 13 communicating with the outside, as shown in fig. 9 to 13, a plurality of second auxiliary air passages 43 are provided between the second end 231 and the second annular air passage 42, as shown in fig. 1 to 4, 12 and 13, and the second external air passage 41 is detachably connected with a second guide pipe 44. The first conduit 34 and the second conduit 44 are commonly connected to a vacuum pump, which is conventional and not shown.

The device does not occupy the space of the inner wall of the blood vessel after bridging, ensures that the blood vessel flow channel is smooth, can realize quick bridging, does not use suture lines, does not need advanced suturing technology, and innovates the difficult problem of side-to-side bridging.

In an embodiment, as shown in fig. 4 to 7, the first end portion 141 is provided with a plurality of first barbs 61, an enlarged view of the barbs can be seen in fig. 7, and as shown in fig. 9 to 11, the second end portion 231 is provided with a plurality of second barbs 62, an enlarged view of the barbs can be seen in fig. 11. The first barb 61 is capable of maintaining the open position of the incision in the first blood vessel 51 for a long period of time after the first catheter 34 is removed; the second barb 62 can maintain the expanded state of the end of the second vessel 52 for a long time after the second catheter 44. The first barb 61 can also penetrate the end of the second vessel 52 and the second barb 62 can also penetrate the side incision edges of the first vessel 51, thereby enhancing the firmness of the bridging of the first vessel 51 and the second vessel 52.

In an embodiment, as shown in figures 12 and 13, the first barb 61 is inclined towards the second base 2 in a direction to prevent the first blood vessel 51 from escaping from the first barb 61, and the second barb 62 is inclined towards the first base 1 to prevent the second blood vessel 52 from escaping from the second barb 62. Specifically, the tip of the first barb 61 is down the center of the side incision and the tip of the second barb 62 is directed toward the periphery of the side incision.

In the embodiment, as shown in fig. 1 to 4, the first base 1 is further provided with a first slider 71 and a second slider 72 for clamping one end of the first blood vessel 51, and a third slider 73 and a fourth slider 74 for clamping the other end of the first blood vessel 51, so that the first blood vessel 51 forms a closed section in the first channel 13, and thus when the vacuum pump is turned on, the protruding form of the first blood vessel 51 at the side opening 14 can be more remarkable, and finally, more blood vessel walls can be attached to the first end portion 141.

In an embodiment, as shown in fig. 5 and 6, the first base 1 comprises a first flap 11 and a second flap 12 sandwiching in half a first blood vessel 51; as shown in fig. 9 and 10, the second base 2 includes a third flap body 21 and a fourth flap body 22 sandwiching a second blood vessel 52 in half. When the first blood vessel 51 is installed, the first valve body 11 and the second valve body 12 which are arranged in half are convenient to clamp the first blood vessel 51 from the side, and similarly, the third valve body 21 and the fourth valve body 22 are convenient to clamp the second blood vessel 52 from the side, so that the friction damage to the outer wall of the blood vessel when two blood vessels pass through the first channel 13 or the second channel 23 is avoided.

In an embodiment, as shown in fig. 6 and 12, a first concave-convex clamping structure 81 is arranged between the first flap body 11 and the second flap body 12; as shown in fig. 14, a second concave-convex clamping structure 82 is arranged between the third flap body 21 and the first flap body 11; as shown in fig. 14, a third concave-convex clamping structure 83 is arranged between the fourth flap body 22 and the first flap body 11; as shown in fig. 2 to 4, a first screw 84 is connected between the third flap body 21 and the second flap body 12; as shown in fig. 2 to 4, a second screw 85 is connected between the fourth petal body 22 and the second petal body 12. Assuming that the first channel 13 is arranged front and back, and the side opening 14 is an upward opening, after the installation is successful, the first concave-convex clamping structure 81 limits the up-and-down back-and-forth movement of the first flap body 11 and the second flap body 12, the second concave-convex clamping structure 82 and the first screw 84 not only prevent the left-and-right movement of the first flap body 11, but also prevent the movement of the third flap body 21, and the second concave-convex clamping structure 82 and the second screw 85 not only prevent the left-and-right movement of the first flap body 11, but also prevent the movement of the fourth flap body 22. The whole device can complete limiting and fixing. The first concave-convex clamping structure 81 comprises a first clamping groove 811 arranged on the first petal body 11 and a first clamping column 812 arranged on the second petal body 12; the second concave-convex clamping structure 82 comprises a second clamping groove 821 arranged on the first valve body 11 and a second clamping column 822 arranged on the third valve body 21; the third concave-convex clamping structure 83 includes a third clamping groove 831 disposed on the first petal 11 and a third clamping column 832 disposed on the fourth petal 22. A first screw hole 841 is formed in the third valve body 21 for the first screw 84 to screw in, and a second screw hole 851 is formed in the fourth valve body 22 for the second screw 85 to screw in.

In the embodiment, a slide rail structure is provided between the first base 1 and the first slider 71, the second slider 72, the third slider 73, and the fourth slider 74, respectively, and the first slider 71, the second slider 72, the third slider 73, and the fourth slider 74 can move along the slide rail structure.

In the embodiment, as shown in fig. 4 to 6, the slide rail structure is a cylindrical guide slot 15 disposed on the first flap 11 and the second flap 12, and a guide post 16 disposed on the first slider 71, the second slider 72, the third slider 73, and the fourth slider 74, respectively, as shown in fig. 4. The inner diameter of the columnar guide groove 15 is slightly smaller than the outer diameter of the screw thread, so that after the first sliding block 71, the second sliding block 72, the third sliding block 73 and the fourth sliding block 74 are removed, the columnar guide groove 15 can be used as a screw hole, and the connection between the first flap body 11 and the second flap body 12 is firmer after the screws are fixed.

In one embodiment, as shown in FIGS. 5-7, the first end 141 is an inwardly tapered surface that is concave toward the first passageway 13, such that the vessel wall that bulges laterally from the first vessel 51 can be more easily attached to the first end 141 and the vessel attachment area is larger than the first end 141 that is not an inwardly tapered surface; as shown in fig. 9-11, the second end 231 has an outward taper, and the second vessel 52 is easily everted over the outward taper of the second end 231 because the end of the second vessel 52 is easily everted. However, when the second end 231 is pressed against the first end 141, the first blood vessel 51 and the second blood vessel 52 have a larger contact surface for butt joint, so that the bridging sealing performance is increased, and the healing success rate of vascular tissues at the two ends is also increased.

In an embodiment, as shown in fig. 7, the first barb 61 is located between the first secondary air passage 33 and the first channel 13, and when the sidewall of the first blood vessel 51 is attracted by the first secondary air passage 33 until the sidewall of the first blood vessel 51 is attached to the first end 141, the first barb 61 digs into the sidewall of the first blood vessel 51.

The use method of the embodiment one:

a first step, as shown in fig. 14, of preparing a first blood vessel 51 and a second blood vessel 52; the first valve body 11, the second valve body 12, the third valve body 21 and the fourth valve body 22 are disassembled;

in the second step, as shown in fig. 15, the first valve body 11 and the second valve body 12 are clamped between the first blood vessel 51 and the side opening 14, and the third valve body 21 and the fourth valve body 22 are clamped between the second blood vessel 52 and the end of the second blood vessel 52 is exposed.

Thirdly, inserting the first conduit 34 and the second conduit 44, clamping the first blood vessel 51 by the first slide block 71, the second slide block 72, the third slide block 73 and the fourth slide block 74, starting the vacuum pump, wherein in the first base 1, the air in the lateral opening 14 enters the vacuum pump through the first auxiliary air passage 33, the first annular air passage 32, the first external air passage 31 and the first conduit 34 in sequence, and under the action of negative pressure, the side wall of the first blood vessel 51 expands towards the lateral opening 14 to form a bulge 511, the bulge 511 is attached to the surface of the first end part 141, and then the bulge 511 is circumcised along the periphery of the first end part 141 by the scalpel 9 to form a blood vessel opening, as shown in fig. 16; in the second seat 2, as shown in fig. 17, the end of the second blood vessel 52 is expanded with the aid of a tool, whereupon the end of the second blood vessel 52 is sucked toward the second sub-air passage 43, thereby keeping the second blood vessel 52 in the expanded state;

the fourth step, as shown in fig. 17, the first blood vessel 51 side and the second blood vessel 52 side wait for bridging;

fifthly, as shown in fig. 18, the first base 1 and the second base 2 are pressed together to complete the side cutting bridging of the first blood vessel 51 and the second blood vessel 52;

sixthly, as shown in fig. 19, the first screw 84 and the second screw 85 are tightened to fix the first base 1 and the second base 2, and the first slider 71, the second slider 72, the third slider 73, the fourth slider 74, the first guide tube 34 and the second guide tube 44 are removed.

The device can coexist with the bridged blood vessel for a long time, and can be optionally disassembled or made of human degradable materials, and a blood vessel bridging model after the device is removed is shown as figure 20.

The second embodiment has a similar structure to the first embodiment, except that the first barb 61 and the second barb 62 are not provided, and the structure is not changed greatly, so that the first embodiment is not shown in the figures, and is shown in fig. 1 to 4 of the first embodiment, and comprises a first base 1 and a second base 2, wherein, as shown in fig. 4 to 6 and 12 to 13, the first base 1 is provided with a first channel 13 for a first blood vessel 51 to pass through, as shown in fig. 3 to 4 and 8 to 13, the second base 2 is provided with a second channel 23 for a second blood vessel 52 to pass through, as shown in fig. 4 to 7, the side of the first channel 13 is provided with a side opening 14; the side opening 14 is provided with a first end portion 141, and the second passage 23 is provided with a second end portion 231 pressed toward the first end portion 141. An enlarged view of the first end portion 141 is shown in fig. 7, and an enlarged view of the second end portion 231 is shown in fig. 11;

as shown in fig. 6, 12 and 13, the first base 1 is internally provided with a first annular air passage 32, and is provided with a first external air passage 31 shown in fig. 4, 12 and 13 to communicate with the outside, as shown in fig. 4 to 7, 12 and 13, a plurality of first auxiliary air passages 33 are arranged between the first end portion 141 and the first annular air passage 32, as shown in fig. 1 to 4, 12 and 13, the first external air passage 31 is detachably connected with a first conduit 34;

as shown in fig. 10, 12 and 13, the second base 2 is provided with a second annular air passage 42 at an inner ring thereof, and is provided with a second external air passage 41 shown in fig. 8, 12 and 13 communicating with the outside, as shown in fig. 9 to 13, a plurality of second auxiliary air passages 43 are provided between the second end 231 and the second annular air passage 42, as shown in fig. 1 to 4, 12 and 13, and the second external air passage 41 is detachably connected with a second guide pipe 44. The first conduit 34 and the second conduit 44 are commonly connected to a vacuum pump, which is conventional and therefore not shown.

The device does not occupy the space of the inner wall of the blood vessel after bridging, ensures that the blood vessel flow channel is smooth, can realize rapid bridging, does not need suture lines, does not need a super suture technology, and innovates the difficult problem of side-to-side bridging.

While the preferred embodiments of the present invention have been illustrated, various changes and modifications can be made by one skilled in the art without departing from the scope of the present invention.

Claims (10)

1. A blood vessel end-to-side anastomosis bridging device comprises a first base (1) and a second base (2), wherein the first base (1) is provided with a first channel (13) for a first blood vessel (51) to pass through, the second base (2) is provided with a second channel (23) for a second blood vessel (52) to pass through, and a side opening (14) is arranged on the side of the first channel (13); the side opening (14) is provided with a first end part (141), and the second channel (23) is provided with a second end part (231) pressing towards the first end part (141);

a first annular air passage (32) is arranged on the inner ring of the first base (1), a first external air passage (31) is arranged to be communicated with the outside, a plurality of first auxiliary air passages (33) are arranged between the first end part (141) and the first annular air passage (32), and the first external air passage (31) is detachably connected with a first guide pipe (34);

second base (2) inner ring be equipped with second annular air flue (42) to be equipped with the external air flue of second (41) and external intercommunication, second tip (231) are equipped with the vice air flue of a plurality of (43) to second annular air flue (42) between, the external air flue of second (41) can be dismantled and have a second pipe (44), first pipe (34) and second pipe (44) link together has the vacuum pump.

2. The vascular end-to-side anastomosis bridging device of claim 1, further comprising: first end portion (141) encircle and be equipped with a plurality of first barb (61), second end portion (231) encircle and be equipped with a plurality of second barb (62).

3. The vascular end-to-side anastomosis bridging device of claim 2, wherein: the first barb (61) is inclined towards the second base (2), and the second barb (62) is inclined towards the first base (1).

4. The vascular end-to-side anastomosis bridging device of claim 3, wherein: the first base (1) is further provided with a first sliding block (71) and a second sliding block (72) for clamping one end of the first blood vessel (51), and a third sliding block (73) and a fourth sliding block (74) for clamping the other end of the first blood vessel (51), so that the first blood vessel (51) forms a closed section in the first channel (13).

5. The vascular end-to-side anastomosis bridging device of claim 4, wherein: the first base (1) comprises a first valve body (11) and a second valve body (12) which clamp a first blood vessel (51) in half; the second base (2) comprises a third valve body (21) and a fourth valve body (22) which clamp a second blood vessel (52) in half.

6. The vessel end-to-side anastomosis bridging device of claim 5, wherein: a first concave-convex clamping structure (81) is arranged between the first flap body (11) and the second flap body (12); a second concave-convex clamping structure (82) is arranged between the third valve body (21) and the first valve body (11); a third concave-convex clamping structure (83) is arranged between the fourth valve body (22) and the first valve body (11); a first screw (84) is connected between the third valve body (21) and the second valve body (12); and a second screw (85) is connected between the fourth valve body (22) and the second valve body (12).

7. The vessel end-to-side anastomosis bridging device of claim 6, wherein: and a sliding rail structure is arranged between the first base (1) and the first sliding block (71), the second sliding block (72), the third sliding block (73) and the fourth sliding block (74) respectively.

8. The vessel end-to-side anastomosis bridging device of claim 6, wherein: the slide rail structure is a columnar guide groove (15) arranged on the first petal body (11) and the second petal body (12), and a guide post (16) respectively arranged on the first slide block (71), the second slide block (72), the third slide block (73) and the fourth slide block (74).

9. The vessel end-to-side anastomosis bridging device of any one of claims 2 to 8, further comprising: the first end part (141) is an inner conical surface which is concave towards the direction of the first channel (13), and the second end part (231) is an outer conical surface.

10. The vessel end-to-side anastomosis bridging device of claim 9, wherein: the first barb (61) is positioned between the first secondary air duct (33) and the first channel (13).

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