KR100848401B1 - Tube-Shaped Vascular Anastomosis Devices and Method Of Using Them Thereof - Google Patents

Abstract

The blood vessel anastomosis device according to the present invention consists of a hollow tube. The tube may be cut in the longitudinal direction, and the diameter of the tube may be gradually widened from one end to the other end. At least one ring-shaped protrusion or groove is formed on the outer and / or inner surface of the tube. In another aspect, the present invention provides a method of anastomizing two blood vessels or tubular vascular organs (end-to-end) anastomosis using the vascular anastomosis device. It provides a method of anastomosis without cutting off a closed or nearly closed blood vessel. In addition, to provide a anastomosis device and anastomosis method to prevent the inverted vessel inner layer to return to its original state after the procedure.

Anastomosis device, blood vessel, bifurcated tubular device

Description

Tube-Shaped Vascular Anastomosis Devices and Method Of Using Them Thereof}

1 is a perspective view of one embodiment of a bifurcated vascular anastomosis device according to the present invention.

2 is a perspective view and a cross-sectional view showing a state in which two protrusions and / or grooves are formed on the inner and outer surfaces of the blood vessel anastomosis device shown in FIG. 1, respectively.

3 is a perspective view of another embodiment of the tubular vascular anastomosis device according to the present invention.

4 is a cross-sectional view showing a state in which two vessel anastomosis device is fixed by a protrusion and / or groove.

5 is a perspective view and a cross-sectional view of an embodiment of a blood vessel anastomosis device, which is divided in side and according to the present invention, having different diameters at a central portion and at both ends.

6 is a side view and a cross-sectional view of an embodiment of a blood vessel anastomosis device having a diameter different from a central portion and both ends according to the present invention and including a fixed needle.

7 is a cross-sectional view showing a state in which the two blood vessel anastomosis device shown in Figs.

8 is a cross-sectional view showing a state of anastomosis of the cut end of the cut blood vessel using only one blood vessel anastomosis device according to the present invention.

9 is a cross-sectional view showing a state of anastomosis of the cut end of the blood vessel cut using two blood vessel anastomosis device according to the present invention.

10 is a cross-sectional view showing a state in which the anastomosis is folded (folded) by using two blood vessel anastomosis device according to the present invention.

Figure 11 is a cross-sectional view showing a state in which the anastomosis by folding a blood vessel not cut using only one vascular anastomosis device according to the present invention.

 <Brief description of the major symbols in the drawings>

100 Example 1 Vascular Anastomosis Device

110: outside protrusion 111: inside protrusion

112, 114, 116: crack 210, 220: external protrusion

211, 221, 231, 241: internal protrusions 230, 240, 250, 260: external groove

300: Example 2 vascular anastomosis device 310: external protrusion

410, 420: external protrusion 411, 421: internal protrusion

500: Example 3 vascular anastomosis device

501: groove 502: crack

510: central portion of anastomosis device 520, 530: both ends of the tube

531: Fixed needle

800: blood vessel anastomosis device 850: the first blood vessel end

860: second vessel end portion 901: first vessel anastomosis device

902: second vessel anastomosis device 950: first vessel end

960: second vessel end portion 1001: first vessel anastomosis device

1002: second vessel anastomosis device 1050: blood vessel

1070: closed area 1100: blood vessel anastomosis device

1150: blood vessel 1170: closed area

Field of invention

The present invention relates to a vascular anastomosis device and a vascular anastomosis method, and more particularly, the present invention relates to a tubular vascular anastomosis device having a side split and hollow and a vascular anastomosis method using the same.

Background of the Invention

The so-called vascular obstruction, which occurs due to narrowing or almost clogging of blood vessels due to lack of exercise and westernization of diet, is increasing year by year. In particular, most of the heart diseases are myocardial infarction and angina caused by ischemia, which is a blockage of blood vessels that supply nutrition and oxygen to the heart.

Surgical methods are often adopted as a method for treating such closed or nearly closed blood vessels. A commonly used method by this surgery is the so-called end-to-end anastomosis method, which cuts off the vessel in question and then anastomizes it. At this time, if the cut vein portion is too long or a long vessel is needed to bypass the problematic vessel portion (bypass), the leg vein is usually cut and utilized.

The cross-section of blood vessels is mainly composed of the inner layer (intima), the middle layer (media) and the outer layer (adventitia). When the two vessels anastomosis, the inner layers must be closely adhered to the inner layers.

However, in addition to the treatment of vascular obstructive diseases of the heart as described above, microsurgical surgeons use a suture directly to repair surgery using flap reconstruction or anastomosis of cut blood vessels. Since the method of securing and suture by hand is used, such sutures can be performed only by highly skilled doctors and require a lot of time and effort. In particular, it is very difficult to suture the anastomosis of blood vessels in the region where the periodic rhythm is continuously progressing, such as the heart. Therefore, during cardiac surgery, it is necessary to stop the heartbeat by artificially causing a heart attack for at least 3 hours.

Therefore, a number of vascular anastomosis devices have been devised to avoid directly suturing blood vessels by hand using such sutures. Among them, US Pat. No. 3,774,615, US Pat. No. 4,214,586, and US Pat. No. 4,917,087 are examples of devices for easily performing end-to-end anastomosis of blood vessels, and US Synovis is already commercialized. There is a microvascular anastomotic coupler from the Micro Companies Alliance.

Drahoslav Lim and two others presented a device for anastomosis in the US Pat. No. 3,774,615 without surgically repairing a blood vessel that was cut off. It is not easy to glue them evenly around them, and because the area where the disconnected parts meet each other is too small, the anastomosis may not work properly and blood may leak.

Robert W. Mericle, in US Pat. No. 4,214,586, provided the basic principle similar to US Pat. No. 3,774,615, but with a device for well-separating broken vessel ends. However, the disadvantage of anastomosis is not improved because the area where the disconnected portions of the blood vessels meet each other is still too small.

David J. Walsh and three others presented a fixed tubular vascular anastomosis device in US Pat. No. 4,917,087, which is an end-to-end or end-to-side ( It can be used for end-to-side anastomosis, but only if the two vessels have the same diameter, and there is a tendency to return to the anastomosis because of the weak fixing force associated with the inner layer after anastomosis of the inner and inner layers. Can not do it.

In addition, since most end-to-end anastomosis surgery involves anastomosis of blood vessels having different diameter diameters, vascular anastomosis surgery is still performed by a specialist. Vascular anastomosis surgery is performed by suture.

In response to the above necessity, the present inventors have proposed a tubular hollow organ anastomosis device that enables anastomosis of two tubular hollow organs, such as blood vessels having different diameters. Presented in 2001-30280. However, the equipment proposed in the patent application has a disadvantage that the structure of the equipment is not easy to manufacture when the diameter of the blood vessel is only a few mm. In addition, the present inventors have presented a tubular vascular anastomosis device and a method of using the same in Korean Patent Application No. 2005-84062. However, the device and method proposed in the patent application is inverted after vascular anastomosis between inner layers, the anastomosis may return to its original state, resulting in narrowing of blood vessels.

Therefore, in the present invention, through the invention disclosed in Korean Patent Application No. 2005-84062 and the invention related to an improved tubular vascular anastomosis device, the vessels having the same diameter as well as the vessels having different diameters are end-to-end. end). In addition, the blood vessels are firmly anastomosis and characterized by preventing the blood vessels to return to the original state after the anastomosis, and its structure is simple, suggesting an easy vascular anastomosis device.

It is an object of the present invention to provide a vascular anastomosis device which can be used to anastomize blood vessels having the same diameter as well as vessels having different diameters from end to end.

It is another object of the present invention to provide a vascular anastomosis device that allows the vascular anastomosis area to be as wide as possible to suture well.

Still another object of the present invention is to provide a vascular anastomosis device which is more rigid in anastomosis using an anastomosis device.

Another object of the present invention is to provide a blood vessel anastomosis device for preventing the anastomosis between the inside of the anastomosis after returning the anastomosis using the anastomosis device.

Still another object of the present invention is to provide a vascular anastomosis device that is easy to manufacture.

Still another object of the present invention is to provide a method for easily anastomosis using a anastomosis device.

The above object of the present invention can be achieved by the present invention described in detail below.

Summary of the Invention

The hollow and bilateral vascular anastomosis device according to the present invention is an end-to-end anastomosis or problem of two blood vessels or tubular hollow organs. It is a simple device that bypasses blood by folding and anastomating blood vessels in the area.

According to the present invention, the anastomosis is more rigid in anastomosis of blood vessels and prevents the anastomosis from returning to its original state after anastomosis.

According to the present invention, the blood vessel anastomosis device presented in the present invention is a hollow, anastomotic tubular anastomosis device which is divided in the longitudinal direction, and its structure is simple, so that the manufacturing cost is low.

According to the present invention, in the anastomosis of blood vessels, the anastomosis apparatus may be anastomized using one or two anastomosis.

Hereinafter, with reference to the accompanying drawings will be described in detail the contents of the present invention.

Detailed description of the invention

Detailed description of the blood vessel anastomosis device according to the present invention and a method of using the same will be described in detail below with reference to the accompanying drawings. Hereinafter, reference numerals are omitted for the same or symmetrical parts of the drawings, and descriptions of duplicate names will be omitted.

One embodiment of the hollow and lateral split-tubular vascular anastomosis device according to the present invention is shown in FIG. 1. Referring to Figure 1, the blood vessel anastomosis device 100 according to the present invention has a hollow tubular shape, the side portion is divided in the longitudinal direction of the tube. The gap of this gap 112 is approximately constant. That is, the distance between the left portion 114 of the crack and the right portion 116 is approximately the same. However, the diameters of the left end 104 and the right end 106 of the tube may be the same or different (hereinafter, the vascular anastomosis device shown in FIG. 1 is referred to as "Example 1 vascular anastomosis device").

Example 1 When anastomosis of blood vessels using two blood vessel anastomosis devices, one anastomosis device is inserted into another anastomosis device. The anastomosis device is provided with the crack 112 so that the diameter of the anastomosis device inserted into it can be reduced, and the diameter of the anastomosis device located outside is expandable so that one anastomosis device is easily inserted into the other anastomosis device. At this time, the relative position of the crack of the external anastomosis device and the crack of the anastomosis device entering the inside prevents pinching of blood vessels to be sealed.

In addition, when it is not easy to insert the above vascular anastomosis device into another vascular anastomosis device, it is also possible to make the other vascular anastomosis device large to facilitate insertion.

Referring back to FIG. 1, a ring-shaped outer protrusion 110 is formed on the outer surface of the central portion of the blood vessel anastomosis device 100 according to the first embodiment according to the present invention, and an inner protrusion 111 having a ring shape on the inner surface thereof. ) Is formed. The projections have two roles, one to ensure that the two anastomosis devices are well engaged with each other, and the other to prevent slipping between each other when tied or after tie down. Two or more such protrusions may be formed as shown in FIG. 2, and may be formed as grooves.

3 shows another tubular vascular anastomosis device according to the present invention (hereinafter, the vascular anastomosis device shown in FIG. 3 is referred to as "Example 2 vascular anastomosis device"). Referring to FIG. 3, the second embodiment type vascular anastomosis device 300 has a hollow tubular shape, and the diameters of the left end portion 304 and the right end portion 306 of the tube are different from each other. In the case of anastomosis of blood vessels by using the two vessel anastomosis devices (hereinafter referred to as a first vessel anastomosis device and a second vessel anastomosis device), the second vessel anastomosis device is made larger than the first vessel anastomosis device, and one end diameter is used. It is made larger than the other diameter so that the first vessel anastomosis device can be easily inserted into the second vessel anastomosis device. In other words, the first vessel anastomosis device and the second vessel anastomosis device resemble each other and the diameter of one end of the tubular shape is larger than the other diameter so that the first vessel anastomosis device can be easily inserted into the second vessel anastomosis device. .

Another vascular anastomosis device according to the present invention shown in Figure 3 is not formed with a longitudinal incision on the side. Accordingly, the difference between the diameter of one end of the tube and the diameter of the other end is relatively larger than that of the blood vessel anastomosis device according to the present invention shown in FIG. It can be easily inserted into the device.

However, this may cause the first blood vessel anastomosis device to slip out of the second blood vessel anastomosis device. In order to prevent this from coming out to make a bump (bump) or groove as shown in Figures 1-3. The bumps or grooves are also made in the inner part of the tube, i.e. the inner circumferential surface of the tube, so as to prevent slippage from slipping off each other when the first and second vessel anastomosis devices are interleaved as shown in FIG. have. In particular, the ring-shaped grooves are formed on the outer circumferential surface of the first blood vessel anastomosis device so that the first and second blood vessel anastomosis devices can be stably coupled with each other, and It is preferable to form the corresponding projection.

The bumps or grooves also provide a more stable structure for securing the vessel anastomosis device and vessels by suture or other mechanical means.

Figure 5 shows another tubular vascular anastomosis device according to the present invention (hereinafter, the vascular anastomosis device shown in Figure 5 is referred to as "Example 3 vascular anastomosis device"). 5 (a), 5 (b) and 5 (c), the vascular anastomosis device 500 according to the present invention has a hollow tubular shape, and the side portion is divided in the longitudinal direction of the tube. have. The spacing of the gaps 502 is preferably constant.

Outside the blood vessel anastomosis device can be divided into a central portion 510, both ends of the left side 520, both ends of the right side 530 and the groove 501. The diameters of the left side portions 520 and the right side portions 530 of both ends may be large. The anastomosis device has a shape in which the diameter of the anastomosis device is curved at both ends of the left side 520 or the right side 530. In addition, the inner portion of the left and right ends 520 and 530 at both ends is positioned at the largest diameter portion, and the groove 501 is present at the left and right sides 520 and 530 at the inner ends of both ends. In addition, the center portion 510 is located on the left side 520 or the right side 530 of the groove 501, the center portion 510 is smaller than the diameter of the inner portion of both ends (520, 530) There is a characteristic.

In the vascular anastomosis device, when tying the flexible groove portion 501 of the anastomosis device, both end portions 520 and 530 are larger in diameter than the central portion 510 due to the compression of the groove portion. Can be prevented from escaping.

In addition, there is a diameter difference in the left portion 520 and the right portion 530 at both ends. Because of this, even if the blood vessels having different diameters according to the size of the blood vessel is inserted, anastomosis of the blood vessels is possible. That is, anastomosis is possible for blood vessels having various diameters by anastomizing both left and left sides or both left and right sides according to the diameter of the blood vessel. In addition, when any one of the blood vessels is characterized in that it is more firmly fixed so that the blood vessel anastomosis device does not escape due to the difference in diameter. Therefore, in the case of the present invention, it is preferable to make the diameter between the two ends slightly different. In addition, through this, it is possible to anastomosis vessels of various dimensions, the anastomosis device may have a large diameter at the left end or a large diameter at the right end.

In addition, the left end and the right end of the tube is preferably used if the diameter of the blood vessel is the same diameter. If the diameter of the tube is different, the blood vessel diameter can be adjusted through the gap 502. The anastomosis device can be used even when the diameter of the vessel is the same or different.

The vessel anastomosis device is characterized in that there are no protrusions or grooves. Therefore, it is more convenient to manufacture the anastomosis device, and considering the wear of the protrusions, resistance, etc., there is an advantage that the fixing by the size difference of the diameter is harder than the fixing by the protrusion.

In the anastomosis device according to the present invention shown in FIG. 6, an anchoring needle 531 is attached to the anastomosis device shown in FIG. 5 (hereinafter, the blood vessel anastomosis device shown in FIG. Example 4 Type Vascular Anastomosis ”. Referring to Figures 6 (a), 6 (b) and 6 (c), when the blood vessels are turned upside down and anastomosis between the inner layers, the inverted inner layer portion is returned to its original state after the procedure and the blood vessels may be blocked. In order to prevent this phenomenon, it is a blood vessel anastomosis device to fix the vessels in which the inner layer surface is fixed by placing fixing needles 531 at the inner edges of both ends 520 and 530 of the anastomosis device.

Referring to Figure 7, Figure 7 (a) is a view showing a fixed state by combining two vascular anastomosis device of the third embodiment. In the present invention, one anastomosis device of the anastomosis device is inserted into another anastomosis device. In this case, the anastomosis device is provided with a gap 502. The advantage of the formation of the gap 502 is that the diameter can be adjusted according to the size of the vessel even if the size of both vessels are different, both anastomosis device is easily inserted. In addition, when the blood vessel is inserted by the gap 502, the movement of the blood vessels, the blood vessels are easily reversed.

The anastomosis device is provided with a groove 501. An advantage of the formation of the groove 501 is to insert the blood vessel into the vessel anastomosis device and turn the vessel upside down after placing the inverted vessel inner layer in the groove 501 to allow the blood vessel to enter the groove 501 through the inside of both ends. As the blood vessels are further fixed, the structure of the blood vessels is stabilized. In addition, through the groove 501 has an advantage in that the anastomosis can be adjusted according to the blood vessel diameter.

In addition, when the two anastomosis devices are combined, the blood vessels are anastomated using a suture or another mechanical device with respect to the groove 501. In this case, the groove 501 is flexible so that the inner surface of the external vascular anastomosis device and the groove 501 of the inserted external vascular anastomosis device are compressed to each other when the groove 501 is bundled. Therefore, after the crimping, the inserted blood vessel device has an advantage that the central portion 510 has a small diameter and a large diameter at both ends thereof.

In Figure 7 (b) is a view showing a fixed state by combining two vascular anastomosis device of the fourth embodiment. In the present invention, one anastomosis device is inserted into another anastomosis device. In both anastomosis devices, the crack 502 and the groove 501 perform the same and similar functions as described above.

In addition, in the anastomosis of blood vessels, the inner layer surfaces are anastomated, and the inverted inner surface has a property of returning to its original state. Therefore, the problem of narrowing the blood vessel occurs when returning to the original state. In order to prevent this problem, the inner layer surface should be fixed more firmly to the vascular anastomosis device, characterized in that the fixing needle 531 is used to harden such fixing.

In the present invention, before the blood vessels are combined, the blood vessels are moved through the gap 502 of the insertion anastomosis device so that the inner layer faces upside down. The tip of the inverted blood vessel is fastened to the fixing needle 531 and the fixing needle 531 has a greater effect in preventing the blood vessel overturning. In addition, the fixing needle 531 is preferably made of a material that is free to bend and flexible.

In addition, when the inserted anastomosis device (hereinafter referred to as the first blood vessel anastomosis device) to which the bent fixing needle 531 is attached is inserted into the external anastomosis device (hereinafter referred to as the second blood vessel anastomosis device), and both anastomosis devices are combined. The groove portion 501 is used to suture blood vessels using a suture or other mechanism. In this case, the fixing of the first blood vessel anastomosis device through the flexibility of the groove portion 501 is the same as that shown in FIG.

A method of anastomosis of blood vessels using the vessel anastomosis device according to the present invention described above will be described with reference to FIGS. 8 to 11.

8 is a cross-sectional view illustrating a state in which a cut end of a cut blood vessel is anastomated using only one blood vessel anastomosis device according to the present invention. In this case, the vascular anastomosis apparatus used in this embodiment is formed with a longitudinal incision like the type 1, 3, and 4 vascular anastomosis apparatus shown in FIGS. As the anastomotic device, any one that does not have an incision may be used.

Referring to FIG. 8, the end of the end 850 of the first blood vessel is inserted into an empty center of the blood vessel anastomosis device 800 and then folded and wrapped around the vessel anastomosis device 800. Is completely inserted into the end 860 of the second blood vessel so that the end 860 of the second blood vessel as shown in FIG. It completely covers the vascular anastomosis device 800. In this case, an inner layer (intima) of the second blood vessel end 860 is closely adhered to the first blood vessel end 850. In the next step, a suture is used to select and tie one or more of the three positions 810, 812, and 814, or to fix the vessels in a mechanical manner to heal them. A fixation needle may also be used to make the vessel tighter.

At this time, depending on the data used in the manufacture of the blood vessel anastomosis device may remain permanently or absorbed by the body.

FIG. 9 is a cross-sectional view illustrating a state in which a cut end of a cut blood vessel is anastomated using two blood vessel anastomosis apparatuses according to the present invention. In this case, any one of the type 1, type 3, type 4 vascular anastomosis device or the type 2 vascular anastomosis device may be used, but unlike the vascular anastomosis state shown in FIG. There is this.

9, the first vessel end 950 and the second vessel end 960 are completely inserted into each of the two vessel anastomosis apparatuses 901 and 902, and then completely surround each vessel anastomosis apparatus. After wrap-around, the first vessel anastomosis device 901 surrounded by blood vessels is completely inserted into the second vessel anastomosis device 902 as shown in FIG. 9.

Here, the first type 1, type 3, type 4 blood vessel anastomosis device as shown in Figure 1 is used in pairs. In this case, the diameter of the vascular anastomosis device 901 inserted into the vascular anastomosis device may be reduced when the vascular anastomosis device 901 surrounded by the blood vessel is inserted into the other vascular anastomosis device 902, thereby reducing the diameter. The diameter of the blood vessel anastomosis device 902 to be covered may be increased, thereby facilitating insertion of the blood vessel anastomosis device.

The process of fixing these vascular anastomosis devices surrounded by blood vessels by suture or other mechanical method is the same as that described with reference to FIG. That is, the tie-down is selectively selected from the three points 910, 912, and 914 indicated as an example in FIG. 9.

By using the vascular anastomosis device according to the present invention, anastomosis surgery is possible without cutting blood vessels that are closed or almost closed due to vascular disease. This method has the advantage of simplifying vascular anastomosis surgery. In this case, the "type 1, type 3 and type 4 vascular anastomosis device" according to the present invention should be used. That is, the blood vessel is inserted into a gap formed beside the blood vessel anastomosis device without cutting the blood vessel in the closed region. The side gap of the "Example 1, 3, and 4 vascular anastomosis device" used in this method is preferably made relatively wide. In this case, the diameter of the vessel, which is a blood vessel anastomosis device, is different from each other when two vessel anastomosis devices are used (see FIG. 10), and the diameter is uniform when only one blood vessel anastomosis device is used (see FIG. 11). desirable.

Referring to Fig. 10, as described above, two "example 1, type 3, and type 4 vascular anastomosis apparatuses", which have relatively widened side cracks made in the longitudinal direction, are used.

In this case, first, the blood vessel 1050 is inserted into the gap of the first blood vessel anastomosis apparatus 1001, and the blood vessel is folded over in the opposite direction as in the above-described embodiment.

At this time, the closed portion 1070 to be isolated within the blood vessel 1050 is sufficiently pulled and pushed to be positioned outside the region of the first blood vessel anastomosis apparatus 1001 as shown. When the blood vessel and the first vessel anastomosis device are arranged in a relatively stable position, the second vessel anastomosis device 1002 is moved away from the position where the first vessel anastomosis device 1001 is inserted. Stabilize the blood vessel in the same way as the device 1001 is inserted. That is, the blood vessel 1050 is inserted into the gap formed next to the second blood vessel anastomosis apparatus 1002, and then the second blood vessel anastomosis apparatus 1002 is pushed in the direction in which the first blood vessel anastomosis apparatus 1001 is located (slide and push) to cover the first vessel anastomosis apparatus 1001 as shown in FIG. 10.

When the first vessel anastomosis device 701, the second vessel anastomosis device 702, and the blood vessels are aligned as shown in FIG. 10, the two anastomosis devices described above may be sutured or other mechanical methods. 701 and 702 are fixed.

In addition to the above method, after using only one embodiment type 1, type 3, and type 4 vascular anastomosis device, the blood vessel 1150 and the vascular anastomosis device 1100 are aligned as shown in FIG. ) Or other mechanical means to isolate the closed portion 1170 in the vessel 1150 by fixing the vessel anastomosis device 1100 and the vessel 1150. At this time, since only one blood vessel anastomosis apparatus 1100 is used, it is preferable to uniformize the diameter of the blood vessel anastomosis apparatus.

As described above, when vascular anastomosis is performed using the vascular anastomosis device manufactured according to the present invention, the inner layer (intima) and the inner layer of the blood vessel naturally satisfy the basic rule. Moreover, the blood vessel anastomosis device according to the present invention has an advantage of easily and naturally anastomizing blood vessels having different diameters. Here, the vascular anastomosis apparatus according to the present invention is basically completely surrounded by the intima side of the vascular tube, so that the difference between the diameters of the two vessels to be anastomosis is maximized by the vessel. The limit of maximum stretch of the vascular tubes is determined by the limit. However, in general, this limit is twice in the case of blood vessels, so it is not preferable that the diameters of both ends of the blood vessel anastomosis device according to the present invention exceed two times the diameter of the blood vessels. This is because there is a possibility of rupture of blood vessels if it exceeds 2 times.

In addition, the blood vessel anastomosis device according to the present invention is simple in structure and can be manufactured very economically. In particular, the blood vessel anastomosis device according to the present invention is manufactured so that the length of the tube, the size and difference of the diameters of both ends of the tube, the width of the gap made in the longitudinal direction on the side surface of the tube, the thickness of the tube, etc. can be actually met to the necessary requirements. By selecting it, there is an advantage in that the vascular anastomosis device can be easily manufactured and used.

In addition, the use of the blood vessel anastomosis device according to the present invention has the advantage that the expert does not need to suture the cut blood vessels by using a suture. . In particular, the anastomosis can be performed without cutting the problematic blood vessels, which greatly reduces the time required for surgery.

Vascular anastomosis device according to the present invention is a small device that is permanently (embed) to the human body, and therefore, such as stainless steel (stainless steel), silicon, titanium, etc., which do not cause a physiologically negative reaction with human tissue even after the implantation operation. Whether used or not, it is desirable to manufacture a material that easily adapts to a living body, such as PGLA (fusion of polyglycolic acid and polylactic acid), which decomposes naturally after a certain period of time in the human body.

The present invention relates to a blood vessel anastomosis apparatus and is used for anastomosis between vessels having the same diameter as well as vessels having different diameters. Vascular anastomosis device according to the present invention has the effect that the structure is simple and the manufacturing cost is low and the time required for anastomosis can be significantly reduced. In addition, the vascular anastomosis device according to the present invention can perform anastomotic surgery without cutting a problematic blood vessel, thereby further reducing the time required for anastomotic surgery. In addition, the blood vessel anastomosis device according to the present invention has an effect of preventing the vessel from being blocked by preventing the inner portion of the inverted vessel from returning to its original state after the procedure.

Claims (19)

A device for anastomizing one or two blood vessels or coronary organs in an end-to-end manner, Tubular body; At least one groove or protrusion formed along an outer circumferential surface and an inner circumferential surface of the main body; Blood vessel anastomosis device characterized in that it is formed, including. A device for anastomizing one or two blood vessels or coronary organs in an end-to-end manner, Tubular body; At least one groove formed along an outer circumferential surface of the main body; Blood vessel anastomosis device characterized in that it is formed, including. According to claim 2, wherein the main body is formed in both ends of the left and right ends of both ends of the diameter increases in diameter to the maximum diameter at the left inner portion of both ends; A left groove portion for stabilizing the fixation of blood vessels on a right portion descending vertically from the left end portions of both ends; A central portion formed of a straight line having a diameter smaller than that of an inner portion of the left end portions on a right portion rising vertically from the left groove portion; A right groove portion for stabilizing fixation of blood vessels vertically descending to the right side of the central portion ; And both ends of the right end portion of which the diameter is reduced in a curved shape at both ends of the right side of the right groove , which rises vertically from the right side of the right groove portion to form a maximum diameter; Blood vessel anastomosis device, characterized in that consisting of. 4. The blood vessel anastomosis device according to claim 3, wherein a fixation needle is attached to edges of left or right inner portions of both ends. The vessel anastomosis device according to any one of claims 1 to 4, wherein the diameter of the main body is gradually widened from one end to the other end. The blood vessel anastomosis device according to any one of claims 1 to 4, wherein the main body is cut in the longitudinal direction. The vessel anastomosis device according to any one of claims 1 to 4, wherein the diameter of the body is less than twice the diameter of the vessel to which it is connected. The vascular anastomosis device according to any one of claims 1 to 4, wherein the material of the main body is any one of stainless steel, sillicon, theta, and PGLA (fusion of polyglycolic acid and polylactic acid). delete delete delete delete delete delete delete delete delete A method of anastomosis of an uncut blood vessel using a single blood vessel anastomosis device according to claim 6, Inserting blood vessels completely into the vessel anastomosis device through an incision formed in the body of the vessel anastomosis device; Covering the body with a portion of the vessel such that the closed portion of the vessel is isolated; And Fixing with suture or other mechanical means to fix the vessel on the body; Vascular anastomosis method for anastomosis without cutting blood vessels, characterized in that consisting of. A method of anastomosis of an uncut blood vessel using two vessel anastomosis devices according to claim 6, Inserting a blood vessel into the blood vessel anastomosis device through an incision formed in the body of the first blood vessel anastomosis device; Covering the body with a portion of the vessel such that the closed portion of the vessel is isolated;  Inserting a blood vessel opposite to the isolation direction of the vessel closure portion through an incision formed in a body of a second vessel anastomosis device; Inserting the blood vessel-covered first vessel anastomosis device completely into the second vessel anastomosis device; And Securing the first and second blood vessel anastomosis devices with a suture or other mechanical means so as to be fixed to each other; Vascular anastomosis method for anastomosis without cutting blood vessels, characterized in that consisting of.

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