CN218220394U - Artificial blood vessel with knotting sites - Google Patents

Abstract

The present disclosure discloses an artificial blood vessel having a knotted site, comprising: an artificial blood vessel trunk (1), a first branch blood vessel (3) on one side of the trunk; one or more main body knotting sites are arranged on the main body (1) of the artificial blood vessel, and the position of the main body (1) of the artificial blood vessel, which is close to the first branch blood vessel (3); one or more first branch knotting sites are arranged on the first branch blood vessel (3) and at the position of the first branch blood vessel (3) close to the artificial blood vessel trunk. The novel artificial blood vessel disclosed by the disclosure can conveniently adjust the spatial position relationship between the trunk and the branches, and is more friendly to the operation so as to reduce potential harm and risk; and further optimization of the multi-branch design also helps to reduce blood circulation interruption time.

Description

Artificial blood vessel with knotting sites

Technical Field

The disclosure belongs to the field of medical equipment, and particularly relates to an artificial blood vessel with a knotting site.

Background

In the existing surgery, a doctor needs to use an artificial blood vessel to replace a diseased blood vessel and to perform an anastomosis of the artificial blood vessel with an existing blood vessel, wherein when the existing blood vessel is not limited to one blood vessel, it is necessary to use an artificial blood vessel having a bifurcation.

The problem is that the spatial position relationship between the branches and the trunk of the existing bifurcated artificial blood vessel cannot be flexibly adjusted, and how to flexibly adjust the spatial position relationship between the trunk and the branches becomes a technical problem to be solved urgently.

In addition, in the case of a relatively extreme aortic surgery, even before a four-branch artificial blood vessel is used to replace a diseased blood vessel, the original ascending aorta and aortic arch are often cut off together, which requires interruption of the lower body circulation and myocardial circulation for a certain period of time, and even when a cryotechnique is used, the lower body circulation and myocardial circulation may still be damaged to some extent.

Therefore, there is a need in the art to develop an artificial blood vessel that can flexibly adjust the spatial relationship between the trunk and the branches of the artificial blood vessel, and that can help to reduce the blood circulation interruption time and make the operation more friendly to reduce the potential hazards and risks.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the present disclosure provides an artificial blood vessel having a knotted site, which is characterized in that:

the artificial blood vessel includes: an artificial blood vessel main body (1), a first branch blood vessel (3) at one side of the main body;

one or more main body knotting sites are arranged on the main body (1) of the artificial blood vessel, and the position of the main body (1) of the artificial blood vessel, which is close to the first branch blood vessel (3);

one or more first branch knot sites are arranged on the first branch blood vessel (3) and the first branch blood vessel (3) is close to the artificial blood vessel trunk.

Preferably, the first and second liquid crystal materials are,

the artificial blood vessel further includes: an artificial blood vessel 1-level branch (2) at the other side of the trunk;

one or more main body knotting sites are arranged on the main body (1) of the artificial blood vessel, and the position of the main body (1) of the artificial blood vessel, which is close to the 1-level branch (2) of the artificial blood vessel;

one or more 1-grade branch knotting sites are arranged on the 1-grade branch (2) of the artificial blood vessel, and the 1-grade branch (2) of the artificial blood vessel is close to the trunk of the artificial blood vessel.

In a preferred embodiment of the method of the invention,

the included angle beta between the first branch blood vessel (3) and the artificial blood vessel main body (1) is adjustable.

Preferably, the first and second liquid crystal materials are,

the bottom end of the grade 1 branch (2) of the artificial blood vessel is connected with the main trunk of the artificial blood vessel, and the top end of the grade 1 branch of the artificial blood vessel is respectively connected with the second branch blood vessel (4) and the third branch blood vessel (5).

Preferably, the first and second liquid crystal materials are,

the included angle alpha between the artificial blood vessel level 1 branch (2) and the artificial blood vessel main body (1) is adjustable.

In a preferred embodiment of the method of the invention,

the included angle gamma between the second branch blood vessel (4) and the third branch blood vessel (5) is adjustable.

Preferably, the first and second liquid crystal materials are,

the artificial blood vessel level 1 branch (2) and the first branch blood vessel (3) are approximately positioned at the same position of the main trunk of the artificial blood vessel.

In a preferred embodiment of the method of the invention,

the joint of the bottom end of the artificial blood vessel level 1 branch (2) and the main trunk of the artificial blood vessel is provided with a first upper edge and a first lower edge;

the joint of the first branch blood vessel (3) and the main trunk of the artificial blood vessel is provided with a second upper edge and a second lower edge;

the first upper edge is flush with the second upper edge.

Preferably, the first and second liquid crystal materials are,

the joint of the bottom end of the artificial blood vessel level 1 branch (2) and the main part of the artificial blood vessel is provided with a first upper edge and a first lower edge;

the joint of the first branch blood vessel (3) and the main trunk of the artificial blood vessel is provided with a second upper edge and a second lower edge;

the first lower edge is flush with the second lower edge.

Preferably, the first and second liquid crystal materials are,

the joint of the bottom end of the artificial blood vessel level 1 branch (2) and the main part of the artificial blood vessel is provided with a first upper edge and a first lower edge;

the joint of the first branch blood vessel (3) and the main trunk of the artificial blood vessel is provided with a second upper edge and a second lower edge;

the first upper edge is flush with the second upper edge.

The novel artificial blood vessel disclosed by the disclosure can conveniently adjust the spatial position relationship between the trunk and the branches, and is more friendly to the operation so as to reduce potential harm and risk; and further optimization of the multi-branch design also helps to reduce blood circulation interruption time.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

Figures 1 to 13C are schematic views of a prior art vascular prosthesis in surgical applications;

fig. 14A to 19 are schematic views of a novel artificial blood vessel and its application in surgery according to various embodiments of the present disclosure.

Detailed Description

The present disclosure will be described in further detail with reference to fig. 1 to 19 and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant matter and not restrictive of the disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. Technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Unless otherwise indicated, the illustrated exemplary embodiments/examples are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure may be practiced. Thus, unless otherwise indicated, the features of the various embodiments/examples may be additionally combined, separated, interchanged, and/or rearranged without departing from the technical concept of the present disclosure.

The use of cross-hatching and/or shading in the drawings is generally used to clarify the boundaries between adjacent components. As such, unless otherwise noted, the presence or absence of cross-hatching or shading does not convey or indicate any preference or requirement for a particular material, material property, size, proportion, commonality between the illustrated components and/or any other characteristic, attribute, property, etc., of a component. Further, in the drawings, the size and relative sizes of components may be exaggerated for clarity and/or descriptive purposes. While example embodiments may be practiced differently, the specific process sequence may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in an order reverse to the order described. In addition, like reference numerals denote like parts.

When an element is referred to as being "on" or "on," "connected to" or "coupled to" another element, it can be directly on, connected or coupled to the other element or intervening elements may be present. However, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element, there are no intervening elements present. For purposes of this disclosure, the term "connected" may refer to physically, electrically, etc., and may or may not have intermediate components.

For descriptive purposes, the present disclosure may use spatially relative terms such as "below," in.. Below, "" above, "" upper, "" above, "" higher, "and" side (e.g., as in "side walls") to describe one component's relationship to another (other) component as illustrated in the figures. Spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of "above" and "below". Further, the devices may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, when the terms "comprises" and/or "comprising" and variations thereof are used in this specification, the presence of stated features, integers, steps, operations, elements, components and/or groups thereof are stated but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof. It is also noted that, as used herein, the terms "substantially," "about," and other similar terms are used as approximate terms and not as degree terms, and as such, are used to interpret inherent deviations in measured values, calculated values, and/or provided values that would be recognized by one of ordinary skill in the art.

In order to better explain the technical effects of the artificial blood vessel of the present disclosure, referring to fig. 1 to 3, 4A to 4C, 5A to 5B, 6 to 8, 9A to 9C, 10A to 10B, 11A to 11B, 12A to 12B, and 13A to 13C, the technical problems of the bifurcated artificial blood vessel in the prior art will be described in detail.

In fig. 1, extracorporeal circulation is established via the axillary arterial cannula; in fig. 2, the right atrial cannula is established on the basis of the axillary artery cannula;

in fig. 3, the ascending aorta and aortic arch are further severed and the three brachiocephalic vessels are transected; at this time, the blood circulation related to the three brachiocephalic vessels is inevitably in an abnormal state;

in fig. 4A, a stent vessel of an appropriate type is selected and implanted into the descending aorta's true lumen via the distal ostium of the aortic arch; at this time, the blood circulation involved in the descending aorta is inevitably abnormal;

in FIG. 4B, the stent vessel of FIG. 4A is released, and FIG. 4C illustrates the released state, the purpose of the release being to expand and fit the stent vessel against the descending aorta so that the stent vessel mediates the connection of the descending aorta and the bifurcated prosthesis of FIG. 5A; it can be understood that this makes the descending aorta become the descending aorta with the stent vessel, which is the technical role of the stent vessel in fig. 4A, 4B as a special artificial blood vessel;

FIG. 5A illustrates the selection of a bifurcated vascular prosthesis having a diameter comparable to the stent of FIGS. 4A and 4B, ready for anastomosis with the descending aorta; at this time, it can be noted that one side of the main body of the four-branched artificial blood vessel has three branch blood vessels, the three branch blood vessels can correspond to three brachiocephalic vessels, and the only branch at the other side of the main body of the four-branched artificial blood vessel has other purposes, which are described in detail later;

it should be noted that fig. 5A clearly shows: the four-branch artificial blood vessel has high space requirement due to 4 branches and 1 trunk of the four-branch artificial blood vessel. How to flexibly adjust the spatial position relationship between the branches and the trunk in the surgical process becomes a problem to be solved by the disclosure.

FIG. 6 illustrates the main vessel distal end of the bifurcated prosthesis (i.e., the distal end of the main trunk of the prosthesis) after anastomosis with the stented descending aorta of FIG. 4B;

in addition, in combination with fig. 6 and 7, it can be found that the only branch on the other side of the main trunk of the four-branched artificial blood vessel is used as an artificial blood vessel perfusion branch, and the other end of the artificial blood vessel pump tube is inserted into the branch; it will be appreciated that the non-illustrated end of the arterial pump tube is connected to the arterial pump tube and its system; further, referring to fig. 8, it can be understood that after the connection of the arterial pump tube via the perfusion branch, the main artificial blood vessel and the descending aorta is established, in fig. 8, the circulation of the lower body is restored by the perfusion branch of the artificial blood vessel after the three branch blood vessels of the artificial blood vessel and the end of the main artificial blood vessel far from the descending aorta are clamped. This means that the bifurcated vascular prosthesis of the prior art is inevitably at this time at risk of damage to the living body because the lower body circulation is restored, and the three brachiocephalic vessels are still clamped.

Up to fig. 9A to 9C, 1 of the three branches of the bifurcated prosthesis, e.g. the central branch, coincide with the left common carotid artery end;

further, fig. 10A illustrates that the proximal segment of the bifurcated artificial blood vessel completes proximal anastomosis at the junction of the original ascending aorta and the heart, and after the proximal anastomosis is completed, the lung is expanded, the left heart is deflated, and then the ascending aorta blocking forceps are opened to restore myocardial perfusion; at the moment, the main vessel represented by the main trunk of the four-forked artificial vessel replaces the original ascending aorta and aortic arch, and the ascending aorta and the descending aorta are communicated; FIG. 10B illustrates the situation after release of the clamp on the side of the trunk of the bifurcated prosthesis near the heart, to illustrate the open ascending aorta occlusion clamp;

figure 11A illustrates a bifurcated vessel on one side of the previously described intermediate branch vessel of the bifurcated prosthesis, i.e., one of a total of three branches on one side of the main trunk of the bifurcated prosthesis, anastomosing with the left subclavian artery; FIG. 11B illustrates the anastomosis, after release of the forceps;

FIG. 12A illustrates a bifurcated vessel on the other side of the previously described mid-branch vessel of the bifurcated prosthesis, i.e., the last of the three total branches on one side of the main trunk of the bifurcated prosthesis, anastomosing a innominate artery; FIG. 12B illustrates the anastomosis, after release of the forceps; thus, the anastomosis and recovery related circulation of all three branches on one side of the main body of the four-branch artificial blood vessel and the corresponding original blood vessel are completed;

fig. 13A-13C illustrate the severing, ligation of the only infusion branch on the other side of the main bifurcated vascular prosthesis thereby severing and ligating the infusion branch vessel;

it can be understood that the prior art bifurcated vascular prosthesis,

in the operation process, the ascending aorta and the aortic arch need to be cut off, three brachiocephalic vessels are transversely cut, then an artificial blood vessel with a proper type is selected as a special stent blood vessel, the descending aorta true cavity is implanted through the distal port of the aortic arch, and then the stent blood vessel is released to be expanded in the descending aorta;

further, selecting a four-forked artificial blood vessel with the diameter equivalent to that of the stent blood vessel, wherein the far end of the main blood vessel of the four-forked artificial blood vessel is anastomotic with the descending aorta with the stent blood vessel;

the other end of the arterial pump tube is inserted into a perfusion branch vessel at one side of the four-forked artificial blood vessel, then all three branch vessels at the other side of the four-forked artificial blood vessel are transected by blocking forceps, and the circulation of the lower half of the body is recovered through the perfusion branch vessels and the arterial pump tube;

furthermore, the middle bifurcation in the three branch blood vessels is anastomosed with the end of the left common carotid artery; after the proximal end anastomosis is finished, expanding the lung, exhausting air from the left heart, opening the ascending aorta blocking forceps and recovering the myocardial perfusion;

then, the branched blood vessel corresponding to the left subclavian artery in the three branched blood vessels is anastomosed with the left subclavian artery;

furthermore, the last bifurcation blood vessel corresponding to the innominate artery in the three branch blood vessels is anastomosed with the innominate artery;

completing anastomosis with three head-arm blood vessels;

finally, the perfused branch vessel is severed and ligated.

In summary, when the bifurcated artificial blood vessel in the prior art is used in an aortic surgery, especially when the ascending aorta and the aortic arch are required to be treated simultaneously, the surgery may result in that the circulation of the lower body cannot be recovered as soon as possible within a period of time, and the blood vessels of the three brachiocephalic vessels, i.e., the left common carotid artery, the left subclavian artery and the innominate artery, cannot be recovered as soon as possible. This means that the prior art bifurcated vascular prosthesis has technical problems in that it cannot recover blood circulation as quickly as possible for the application in aortic surgery.

To this end, in one embodiment, the present disclosure discloses an artificial blood vessel having a knotted site, as shown in figure 14A, wherein,

the artificial blood vessel includes: an artificial blood vessel trunk (1), a first branch blood vessel (3) on one side of the trunk;

one or more main body knotting sites are arranged on the main body (1) of the artificial blood vessel, and the position of the main body (1) of the artificial blood vessel, which is close to the first branch blood vessel (3);

one or more first branch knot sites are arranged on the first branch blood vessel (3) and the first branch blood vessel (3) is close to the artificial blood vessel trunk.

For the embodiment, the knotted sites k1-b1 to k1-b6 of the trunk (1) near the first branch vessel (3) and the knotted sites k3-1 to k3-4 of the first branch vessel (3) near the stem of the artificial blood vessel make the artificial blood vessel disclosed by the disclosure have the characteristics of easily adjusting the spatial position relationship, flexibility and maximum prevention of vessel kinking. As exemplarily shown in fig. 14A, the knotted sites of the first branch vessel (3) and the artificial blood vessel trunk (1) are connected, so that the spatial position relationship between them can be flexibly adjusted.

It should be noted that the artificial blood vessel having a knotted site is not limited to an artificial blood vessel having several branches. Thus, further, in one embodiment,

as shown in the figure 14B of the drawings,

the artificial blood vessel further includes: an artificial blood vessel 1-level branch (2) on the other side of the main trunk;

one or more main body knotting sites are arranged on the main body (1) of the artificial blood vessel, and the position of the main body (1) of the artificial blood vessel, which is close to the 1-level branch (2) of the artificial blood vessel; for example, the knotting sites k1-a1 to k1-a6;

one or more 1-grade branch knotting sites are arranged on the 1-grade branch (2) of the artificial blood vessel, and the 1-grade branch (2) of the artificial blood vessel is close to the trunk of the artificial blood vessel; for example, the knot sites k2-1 to 2-3.

In a further embodiment of the method according to the invention,

the diameter of the main body of the artificial blood vessel is larger than that of the 1-grade branch of the artificial blood vessel, and the diameter of the 1-grade branch (2) of the artificial blood vessel is larger than that of the first branch blood vessel.

In another embodiment of the present invention, the substrate is,

the bottom end of the artificial blood vessel grade 1 branch (2) is connected with an artificial blood vessel main body, and the top end of the artificial blood vessel grade 1 branch is respectively connected with a second branch blood vessel (4) and a third branch blood vessel (5).

Thus, the present disclosure constructs a new three-branch vessel based on the level 1 branch of the artificial blood vessel, rather than the three branches distributed over the trunk at the same time as is common in the prior art. Such a design is particularly advantageous in some operations to reduce the interruption time of blood circulation, so as to protect the organs of the living body as much as possible, as described in fig. 14C to 19 and the explanation thereof below.

In one embodiment of the present invention,

2 pipelines extend out of the top end of the 1-level branch of the artificial blood vessel, and the 2 pipelines form a second branch blood vessel (4) and a third branch blood vessel (5) respectively.

In one embodiment of the method of manufacturing the optical fiber,

one or more corresponding branch knot sites may also be provided on the second branch vessel (4) or the third branch vessel (5). This also allows the second branch vessel (4) or the third branch vessel (5) to be connected with the knotted position of the artificial blood vessel trunk (1) to further adjust the spatial position relationship with each other.

In one embodiment of the present invention,

the length of the grade 1 branch (2) of the artificial blood vessel is less than that of the first branch blood vessel (3).

The above length refers to the default length of the factory, because the trunk or related branches can be cut short during the operation. The artificial blood vessel comprises an artificial blood vessel main body (1), an artificial blood vessel grade 1 branch (2), a second branch blood vessel (4) and a third branch blood vessel (5), wherein the artificial blood vessel main body, the artificial blood vessel grade 1 branch, the second branch blood vessel and the third branch blood vessel are in a communication relation; the artificial blood vessel main body (1) and the first branch blood vessel (3) are communicated.

Fig. 14B and 14C illustrate another embodiment of the novel vascular prosthesis disclosed by the present disclosure.

Regarding the above-mentioned artificial blood vessel disclosed in the present disclosure, the excellence of the technical effect thereof needs to be described by the following exemplified aortic surgical procedure:

see fig. 14D for illustration:

operation step 1:

ascending aorta proximal anastomosis stage:

after the anesthesia is proper, the right femoral artery and the axillary artery are dissociated for standby by a conventional disinfection and drape;

opening chest in the middle, and exposing aortic arch and head and arm blood vessels;

heparinizing, establishing extracorporeal circulation of femoral artery, axillary artery and right atrium cannula, and cooling to 32 ℃ for protection;

using two vascular occlusion forceps A and B to clamp the aortic arch part between the proximal end of the innominate artery and the left common carotid artery respectively; wherein C represents an extracorporeal circulation axillary artery cannula, which is firstly clamped by A in the current illustration state, and the right subclavian artery (axillary artery) IV 'and the right common carotid artery III' are communicated with C; the left common carotid artery III and the left subclavian artery IV are still communicated with the descending aorta;

cutting the ascending aorta, carefully cleaning the thrombus, cooling the ice debris on the surface of the heart, and perfusing blood-containing anti-bleeding liquid into the openings of the left and right coronary arteries;

after the heart is in good arrest, the proximal end of the ascending aorta is trimmed, the artificial blood vessel of the disclosure with the proper model is selected according to the size of the aorta of a patient, the trunk of the artificial blood vessel is trimmed to the proper length, and the proximal end (1 a) of the trunk of the artificial blood vessel is matched with the root (I) of the aorta to form I-1a.

Further, see fig. 15 for a schematic:

surgical step 2-ascending aorta distal anastomosis:

the far-end (1B) of the artificial blood vessel trunk is anastomosed with the trimmed aortic arch near-heart end (Va) to form Va-1B, the air is fully exhausted, the blood vessel blocking forceps (B) are opened, the heart jumps and slowly warms.

It is obvious that the vascular prosthesis disclosed in the present disclosure allows the heart to recover and slowly recover the temperature through the above 2 steps of the operation, which means that the circulation between the heart and the descending aorta has already started to be normal. This is particularly so that the prosthesis disclosed in this disclosure begins lower body circulation earlier than the bifurcated prosthesis exemplified in the prior art.

Further, see fig. 16 for a description of:

operation step 3-artificial blood vessel angle adjustment:

during the rewarming period, the included angle alpha between the primary branch (2) and the main trunk and the included angle beta between the first branch blood vessel (3) and the main trunk are adjusted through the knotting site of the outer wall of the artificial blood vessel according to the position and the trend of the head and arm blood vessels of the patient. The k1-a1 and k1-a2 sites on the main trunk (1) of the artificial blood vessel are respectively knotted and connected with the k2-1 and k2-2 sites of the first-level branch (2) by silk threads, and the included angle alpha is adjusted, so that the far end of the third branch blood vessel (5) faces the far end of the left common carotid artery as far as possible and is ready to be anastomosed with the left common carotid artery. And then knotting and connecting the k1-b1 site on the trunk (1) and the k3-1 site on the branch (3), and adjusting the beta included angle to enable the far end of the branch blood vessel (3) to face the far end of the left subclavian artery as far as possible to prepare for anastomosis with the left subclavian artery.

Further, see fig. 17 for a schematic:

operation step 4-left neck total and left subclavian anastomosis:

clamping and separating the proximal end (IIIa) of the left common carotid artery, trimming the third branch vessel (5) to a suitable length, and anastomosing the distal end (5 b) thereof with the proximal end (IIIa) of the left common carotid artery to form IIIa-5b. Similarly, the left subclavian artery proximal end (IVa) is clamped and severed, and the first branch vessel (3) is trimmed to length and its distal end (3 b) is anastomosed to the left subclavian artery proximal end (IVa) to form Iva-3b. At this point, circulation in the left common carotid and left subclavian arteries can be restored.

Further, see fig. 18 for a schematic:

operation step 5-innominate artery anastomosis:

the second branch vessel (4) is trimmed to a suitable length and the distal end (4 b) is fitted with the unknown proximal end (IIa) to form IIa-4b. Protamine neutralizes heparin, and axillary artery and femoral artery extracorporeal circulation cannulas are respectively removed to achieve tight hemostasis. By this time, circulation of the innominate artery can be restored.

Further, see fig. 19 for a description of:

surgical step 6-stenting:

an interventionalist doctors makes a fluoroscopy on the descending aorta to define the lesion position, sends the stent graft into the femoral artery, the proximal end of the stent is positioned at the main trunk (1) of the artificial blood vessel and the far end of the branch bifurcation, releases the stent graft after repeatedly determining the release site, displays the good position of the stent by the second time of the aorta angiography, and removes the guide wire of the catheter after determining that no obvious internal leakage exists. Strictly stopping bleeding, placing the pericardium mediastinum for drainage, checking the gauze instrument, and closing the chest layer by layer. Fig. 19 illustrates the final stent primarily in the aortic arch V and the inner region of the descending aorta VI.

In summary, the artificial blood vessel with knotted sites disclosed in the present disclosure obviously overcomes the problem that the artificial blood vessel in the prior art is difficult to flexibly adjust the spatial position relationship between the trunk and the branches by the exemplary application of the artificial blood vessel. Furthermore, the new multi-branch design disclosed by the present disclosure also enables the technical problem of restoring the relevant blood circulation as soon as possible to be solved.

In another embodiment of the present invention, the substrate is,

the included angle alpha between the artificial blood vessel level 1 branch (2) and the artificial blood vessel main body (1) is adjustable. Therefore, the anastomotic angle of any one of the second branch blood vessel (4) and the third branch blood vessel (5) and the corresponding original blood vessel can be adjusted when the method is applied to an operation.

In another embodiment of the present invention, the substrate is,

the included angle beta between the first branch blood vessel (3) and the artificial blood vessel main body (1) is adjustable. Thus, the anastomotic angle of the first branch vessel (3) and the corresponding original vessel can be adjusted when the vessel is applied to an operation.

In another embodiment of the present invention, the substrate is,

the included angle gamma between the second branch blood vessel (4) and the third branch blood vessel (5) is adjustable. Therefore, the anastomotic angle of the second branch blood vessel (4) and the third branch blood vessel (5) with the corresponding original blood vessel can be adjusted when the operation is performed.

In another embodiment of the present invention, the substrate is,

the adjustable ranges of the included angles alpha and beta are both 30-60 degrees, and the adjustable range of the included angle gamma is 0-30 degrees.

It should be noted that, due to the existence of the included angle and the adjustable range thereof, the artificial blood vessel disclosed by the present disclosure can still have the characteristics of easy adjustment, flexibility and maximized prevention of vessel kinking under the condition of reducing the contact between the branches and the trunk by using the novel multi-branch design in the application process.

The characteristic that the artificial blood vessels flexibly adjust the spatial position relation of each other disclosed by the disclosure is further enhanced by further combining the design of an included angle on the basis of the knotting site.

In a further embodiment of the method according to the invention,

the included angle between the grade 1 branch (2) and the first branch blood vessel (3) is 60-120 degrees.

In another embodiment of the present invention, the substrate is,

the artificial blood vessel level 1 branch (2) and the first branch blood vessel (3) are approximately positioned at the same position of the main trunk of the artificial blood vessel.

In another embodiment of the present invention, the substrate is,

the substantially same location divides the trunk into two sections,

exemplary, wherein a length is between 30 and 25cm;

the other section is 10 to 15cm.

In another embodiment of the present invention, the substrate is,

illustratively, the diameter of the stem is 26-32mm.

In another embodiment of the present invention, the substrate is,

illustratively, the grade 1 branch is 16mm in diameter.

In a further embodiment of the method according to the invention,

illustratively, the first to third branch vessels have a diameter of 8-10mm.

In another embodiment of the present invention, the substrate is,

illustratively, the top to bottom length of the level 1 branch (2) is 5cm.

In another embodiment of the present invention, the substrate is,

illustratively, the first to third branch vessels have a length of at most 30cm.

In a further embodiment of the method according to the invention,

the artificial blood vessel main body, the grade 1 branch and the first to third branch blood vessels have the characteristics of stretching and extruding on the premise of default delivery length, and the lengths of all parts of the artificial blood vessel main body can be further adjusted through the characteristics of stretching and extruding.

In another embodiment of the present invention, the substrate is,

the artificial blood vessel main body, the grade 1 branch and the first to third branch blood vessels also have bending characteristics on the premise of default delivery appearance, and included angles among all parts of the artificial blood vessel main body, the grade 1 branch and the first to third branch blood vessels can be further adjusted through the bending characteristics.

In a further embodiment of the method according to the invention,

the joint of the bottom end of the artificial blood vessel level 1 branch (2) and the main part of the artificial blood vessel is provided with a first upper edge and a first lower edge;

the joint of the first branch blood vessel (3) and the main trunk of the artificial blood vessel is provided with a second upper edge and a second lower edge;

the first upper edge is flush with the second upper edge.

In another embodiment of the present invention, the substrate is,

the joint of the bottom end of the artificial blood vessel level 1 branch (2) and the main trunk of the artificial blood vessel is provided with a first upper edge and a first lower edge;

the joint of the first branch blood vessel (3) and the main trunk of the artificial blood vessel is provided with a second upper edge and a second lower edge;

the first lower edge is flush with the second lower edge.

In another embodiment of the present invention, the substrate is,

the joint of the bottom end of the artificial blood vessel level 1 branch (2) and the main part of the artificial blood vessel is provided with a first upper edge and a first lower edge;

the joint of the first branch blood vessel (3) and the main trunk of the artificial blood vessel is provided with a second upper edge and a second lower edge;

the first upper edge is flush with the second upper edge.

In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present disclosure, "plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.

Claims (10)

1. An artificial blood vessel having a knotted site, comprising:

the artificial blood vessel includes: an artificial blood vessel trunk (1), a first branch blood vessel (3) on one side of the trunk;

one or more main body knotting sites are arranged on the main body (1) of the artificial blood vessel, and the position of the main body (1) of the artificial blood vessel, which is close to the first branch blood vessel (3);

one or more first branch knot sites are arranged on the first branch blood vessel (3) and the first branch blood vessel (3) is close to the artificial blood vessel trunk.

2. The artificial blood vessel of claim 1,

the artificial blood vessel further includes: an artificial blood vessel 1-level branch (2) on the other side of the main trunk;

one or more main body knotting sites are arranged on the main body (1) of the artificial blood vessel, and the position of the main body (1) of the artificial blood vessel close to the 1-level branch (2) of the artificial blood vessel;

one or more 1-grade branch knotting sites are arranged on the 1-grade branch (2) of the artificial blood vessel, and the 1-grade branch (2) of the artificial blood vessel is close to the main stem of the artificial blood vessel.

3. The artificial blood vessel of claim 1,

the included angle beta between the first branch blood vessel (3) and the artificial blood vessel main body (1) is adjustable.

4. The artificial blood vessel of claim 2,

the bottom end of the artificial blood vessel grade 1 branch (2) is connected with an artificial blood vessel main body, and the top end of the artificial blood vessel grade 1 branch is respectively connected with a second branch blood vessel (4) and a third branch blood vessel (5).

5. The artificial blood vessel of claim 2,

the included angle alpha between the artificial blood vessel level 1 branch (2) and the artificial blood vessel main body (1) is adjustable.

6. The artificial blood vessel of claim 3,

the included angle gamma between the second branch blood vessel (4) and the third branch blood vessel (5) is adjustable.

7. The artificial blood vessel of claim 2,

the artificial blood vessel level 1 branch (2) and the first branch blood vessel (3) are approximately positioned at the same position of the main trunk of the artificial blood vessel.

8. The artificial blood vessel of claim 7,

the joint of the bottom end of the artificial blood vessel level 1 branch (2) and the main part of the artificial blood vessel is provided with a first upper edge and a first lower edge;

the joint of the first branch blood vessel (3) and the main trunk of the artificial blood vessel is provided with a second upper edge and a second lower edge;

the first upper edge is flush with the second upper edge.

9. The artificial blood vessel of claim 7,

the joint of the bottom end of the artificial blood vessel level 1 branch (2) and the main part of the artificial blood vessel is provided with a first upper edge and a first lower edge;

the joint of the first branch blood vessel (3) and the main trunk of the artificial blood vessel is provided with a second upper edge and a second lower edge;

the first lower edge is flush with the second lower edge.

10. The artificial blood vessel of claim 7,

the joint of the bottom end of the artificial blood vessel level 1 branch (2) and the main part of the artificial blood vessel is provided with a first upper edge and a first lower edge;

the joint of the first branch blood vessel (3) and the main trunk of the artificial blood vessel is provided with a second upper edge and a second lower edge;

the first upper edge is flush with the second upper edge.

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