CN113440305A

CN113440305A - Artificial blood vessel suturing method and artificial blood vessel

Info

Publication number: CN113440305A
Application number: CN202010217564.6A
Authority: CN
Inventors: 宗雪; 马晓曼; 明景; 胡冰清; 阙亦云
Original assignee: Maitong Medical Technology Jiaxing Co ltd
Current assignee: Maitong Medical Technology Jiaxing Co ltd
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2021-09-28

Abstract

The invention relates to an artificial blood vessel suturing method and an artificial blood vessel, wherein the artificial blood vessel suturing method specifically comprises the following steps: setting at least two connecting points at the connecting end of the branch blood vessel, and setting at least two positioning points at the edge of the incision of the main blood vessel corresponding to the connecting points; fixing the connecting point and the positioning point to enable the connecting end to be in butt joint with the edge of the cut hole, so that the branch blood vessel is positioned on the main blood vessel; and operating a suture to suture the connecting end and the cut hole edge to form a starting point, operating the suture to circumferentially suture the branch blood vessel for a plurality of times from the starting point until the cut hole edge and the connecting end are closed, and operating the suture to suture the connecting end and the cut hole edge to form a final point. The artificial blood vessel suturing method comprises branch positioning and branch suturing, accurate positioning of the branch type blood vessel on the main blood vessel can be guaranteed, and the branch type blood vessel included in the artificial blood vessel is firmly connected with the main blood vessel in a suturing mode.

Description

Artificial blood vessel suturing method and artificial blood vessel

Technical Field

The invention relates to the technical field of vascular repair, in particular to an artificial blood vessel suture method and an artificial blood vessel.

Background

The aortic arch is the arch-shaped bent part of the upper part of the aorta, a baroreceptor with the function of regulating blood pressure is arranged in the aortic arch, and 2-3 millet granular bodies serving as chemoreceptors are arranged below the aortic arch and are called as aortic bulbs.

The blood vessel variation on the aortic arch is high, and the abnormal incidence rate is up to 20%. At present, the first choice treatment method of aortic arch diseases is aortic arch replacement, the principle is that a branch type blood vessel is directly adopted to replace an aortic arch lesion part, so the performance of the branch type blood vessel is a key factor for determining the treatment effect, and the core technology influencing the performance of the branch type blood vessel is a blood vessel suture method, however, the situation that the branch type blood vessel is not accurately positioned on a main blood vessel often occurs during actual suture, the suture is not firm and is easy to be off-line, and the use safety and the reliability of the branch type blood vessel implanted into a human body are greatly reduced.

The prior art discloses a prosthetic annuloplasty ring and a suturing method thereof, the suturing method adopts multilayer plane suture, while a branch type blood vessel is in a three-dimensional structure, and the suturing method of the plane structure cannot meet the suturing requirement of the three-dimensional structure of the branch type blood vessel, so that the suturing method cannot be applied to the suture of the branch type blood vessel.

Disclosure of Invention

In view of the above, it is necessary to provide an artificial blood vessel suturing method and an artificial blood vessel aiming at the problems of inaccurate positioning of a branch type blood vessel on a main blood vessel and weak suturing.

An artificial blood vessel suturing method, comprising:

setting at least two connecting points at the connecting end of the branch blood vessel, and setting at least two positioning points at the edge of the incision of the main blood vessel corresponding to the connecting points;

fixing the connecting point and the positioning point to enable the connecting end to be in butt joint with the edge of the cut hole, so that the branch blood vessel is positioned on the main blood vessel;

and operating a suture to suture the connecting end and the cut hole edge to form a starting point, operating the suture to circumferentially suture the branch blood vessel for a plurality of times from the starting point until the cut hole edge and the connecting end are closed, and operating the suture to suture the connecting end and the cut hole edge to form a final point.

The artificial blood vessel suture method has at least the following beneficial technical effects:

the vascular suturing method comprises branch positioning and branch suturing. In the step of branch positioning, a connecting point on the connecting end is fixed with a positioning point on the edge of the cut hole, so that the connecting end is accurately butted with the cut hole, and the accurate positioning of the branch blood vessel on the main blood vessel is realized. The branch blood vessel can accurately correspond to the main blood vessel through the step of branch positioning, so that the accurate positioning of the branch blood vessel on the main blood vessel can be ensured, the concurrent symptoms caused by positioning deviation are avoided, and the rapid and effective treatment can be carried out on the blood vessel variation on the aortic arch through the aortic arch replacement;

in the branch suturing step, a suture line is adopted to suture and fix the branch blood vessel on the main blood vessel, the operation starting end is sutured for a plurality of times around the branch blood vessel from the starting point, so that the edge of the incised hole is connected with the connecting end of the branch blood vessel, the suturing density of the suturing for a plurality of times is large at intervals, and the suturing connection is firm; after the last suture is finished, the starting end and the part of the suture exposed out of the starting point are operated to be knotted, so that the suture forms a closed loop, the suture forming the closed loop is not easy to be separated, and the use safety and the reliability of the branch type blood vessel implanted into a human body are improved.

The suture line has higher hardness and is easy to be separated, and the fixed form of the suture line is more stable by knotting at the beginning of the suture and knotting operation at the end of the suture, thereby avoiding the occurrence of the thread separation; the suture method of the branch type blood vessel developed by the invention provides technical support for realizing industrialization of the branch type blood vessel.

In one embodiment, the suture line comprises a starting end and a terminal end, and the starting end is operated to penetrate from the surface of the main blood vessel and penetrate out from the blood vessel wall of the branch blood vessel and then is knotted, so that the starting point is formed;

and operating the starting end to circumferentially suture around the branch vessel for a plurality of times from the starting point so as to close the edge of the cut hole and the connecting end, and operating the starting end to knot the part of the suture line exposed from the starting point so as to form a final point.

In one embodiment, the connection points and the positioning points are respectively provided with more than two, the connection points are distributed around the circumference of the connection end, and the positioning points correspond to the connection points in position and are distributed at the edge of the cut hole.

In one embodiment, the fixing the connecting point and the positioning point includes: and sewing the connecting points and the positioning points.

In one embodiment, the operating the suture line to circumferentially suture around the branch vessel from the starting point a plurality of times comprises: after the starting end is operated to penetrate from the surface of the main blood vessel and penetrate out from the blood vessel wall of the branch blood vessel, the starting end penetrates through a loop formed by the suture and is tensioned to form a suture point, and the operation is repeated circumferentially around the branch blood vessel to form a plurality of suture points.

In one embodiment, the connecting point and the positioning point are separated when the suture point overlaps with the positions of the connecting point and the positioning point during the circumferential suture around the branch vessel.

In one embodiment, a plurality of suture points are connected in sequence to form a suture track which surrounds the circumference of the branch blood vessel in multiple circles.

In one embodiment, the suture line is circumferentially sutured around the branch vessel for a plurality of times from the starting point, and the method further comprises the steps of arranging a hitch lock stitch between two adjacent suture points; set up the hitch serging and include: after the suture point is formed, the starting end passes through the lower part of a connecting line segment between the suture point and the previous suture point so as to enable the suture line to form a loop coil, and the starting end is operated to pass through the loop coil and is tensioned to form a loop lock edge.

In one embodiment, said operating said starting end to tie a knot with a portion of said suture from which said starting point is exposed comprises: the starting end penetrates out of a stitching point formed by the last stitching and then penetrates below a connecting line segment between the starting point and the first stitching point so as to enable the stitching line to form a knotting coil, the starting end is operated to penetrate through the knotting coil and be tensioned, and finally the starting end and the part of the stitching line exposed out of the starting point are knotted.

In one embodiment, the starting end penetrates from the surface of the blood vessel body 0-5mm away from the edge of the incision hole; and/or the starting end penetrates out of the vessel wall of the branch vessel which is 0-5mm away from the end surface of the connecting end.

In one embodiment, the adjacent spacing of the plurality of stitching points is 0-5 mm.

An artificial blood vessel obtained according to the artificial blood vessel suturing method.

Drawings

FIG. 1 is a schematic view illustrating a connection point provided at a connection end of a branch vessel in an artificial blood vessel suturing method according to an embodiment of the present invention;

fig. 2 is a schematic view illustrating that a connection point corresponding to a position is fixedly connected with a positioning point on a cutting hole in an artificial blood vessel suturing method according to an embodiment of the present invention;

FIG. 3 is a schematic view of a suture site formed by suturing a main vessel to a branch vessel after a starting point is formed.

In the figure, 100, branch vessels, 110, connecting ends, 111, connecting points,

200. the blood vessel of the subject, 210, the incision,

300. suture, 301, start, 302, end, 310, suture loop,

410. the starting point, 420, the stitch point,

500. suture with needle.

Detailed Description

The invention will be further explained with reference to the drawings.

To facilitate an understanding of the invention, various embodiments of the invention defined by the claims are described more fully below with reference to the accompanying drawings. While the preferred embodiments of the present invention have been illustrated in the accompanying drawings, and described in detail to facilitate this understanding, such details are to be regarded as illustrative only. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Accordingly, those of ordinary skill in the art will recognize that changes and modifications of the various embodiments described herein can be made without departing from the scope of the invention, which is defined by the appended claims. Moreover, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.

It will be apparent to those skilled in the art that the following descriptions of the various embodiments of the present invention are provided for illustration only and not for the purpose of limiting the invention as defined by the appended claims.

Throughout the description and claims of this specification, the words "comprise" and variations of the words, for example "comprising" and "comprises", mean "including but not limited to", and are not intended to (and do not) exclude other components, integers or steps. Features, integers or characteristics described in conjunction with a particular aspect, embodiment or example of the invention are to be understood to be applicable to any other aspect, embodiment or example described herein unless incompatible therewith.

It is to be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. The expression "comprising" and/or "may comprise" as used in the present invention is intended to indicate the presence of corresponding functions, operations or elements, and is not intended to limit the presence of one or more functions, operations and/or elements. Furthermore, in the present invention, the terms "comprises" and/or "comprising" are intended to indicate the presence of the features, amounts, operations, elements, and components disclosed in the specification, or combinations thereof. Thus, the terms "comprising" and/or "having" should be understood as presenting additional possibilities for one or more other features, quantities, operations, elements, and components, or combinations thereof.

In the present invention, the expression "or" comprises any and all combinations of the words listed together. For example, "a or B" may comprise a or B, or may comprise both a and B.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected" or "coupled" to another element, it can be directly or indirectly coupled to the other element or intervening elements may also be present.

References herein to "upper", "lower", "left", "right", etc. are merely intended to indicate relative positional relationships, which may change accordingly when the absolute position of the object being described changes.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present specification and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In an embodiment of the present invention, a suturing method for an artificial blood vessel is provided, which is specifically implemented by the following steps:

(1) a connection point is set at the connection end 110 of the branch blood vessel 100, and an anchor point is set at the edge of the incision 210 of the main blood vessel 200. Referring to fig. 1, the connection points are circumferentially distributed around the connection end 110, which are A, B, C, D four points in turn, and the positioning points are in one-to-one correspondence with the connection points and are distributed on the edge of the cut hole 210.

(2) Referring to fig. 2, the connection points corresponding to the positions are respectively fixed to the positioning points, so that the connection ends 110 are butted against the cutting holes 210, thereby positioning the branch vessel 100 on the main vessel 200.

(3) Starting suturing, wherein a suture needle is used for driving the starting end 301 of the suture line 300 to penetrate into the main blood vessel 200 from the edge of the cut hole 210 and penetrate out from the blood vessel wall of the branch blood vessel 100, and the starting end 301 of the suture line 300 is knotted after penetrating out to finish the suturing of the starting point 410;

(4) the suture needle drives the starting end 301 to suture for a plurality of times from the starting point 410 circumferentially around the branch blood vessel 100 until the edge of the cut hole 210 is closed with the connecting end 110, so that the connection between the edge of the cut hole 210 and the connecting end 110 is realized;

(5) after the last suture is completed, the operation start end 301 is tied with the portion of the suture thread 300 exposed from the start point 410, thereby forming an end point.

The method comprises the steps of branch positioning and branch stitching, wherein the branch positioning specifically comprises the steps (1) and (3); the branch suture specifically includes steps (3) to (5).

In the branch positioning step, the connection point on the connection end 110 is fixedly connected with the positioning point on the edge of the incision 210, so that the connection end 110 is accurately butted with the incision 210, and the accurate positioning of the branch blood vessel 100 on the main blood vessel 200 is realized. The branch vessel 100 can accurately correspond to the main vessel 200 through the step of branch positioning, so that the accurate positioning of the branch vessel 100 on the main vessel 200 can be ensured, the concurrent symptoms caused by positioning deviation are avoided, and the rapid and effective treatment can be carried out on the vessel variation on the main vessel 200 through aortic arch replacement;

in the branch suturing step, the branch blood vessel 100 is sutured and fixed on the main blood vessel 200 by adopting the suture line 300, the operation starting end 301 is sutured for a plurality of times around the branch blood vessel 100 from the starting point 410, so that the edge of the cutting hole 210 and the connecting end 110 of the branch blood vessel 100 are connected, the suturing density of the multiple suturing at intervals is large, and the suturing connection is firm; after the last suture is finished, the operation starting end 301 and the part of the suture line 300 exposed out of the starting point 410 are knotted to form a closed loop of the suture line 300, the suture line forming the closed loop is not easy to be separated, and the use safety and the reliability of the branch type blood vessel implanted into a human body are improved.

The suture thread itself is easily released due to its high hardness, and the fixed form of the suture thread 300 is more stable by the knotting operation at the beginning and at the end of the suture, thereby preventing the occurrence of the thread release.

The suture method of the branch type blood vessel developed by the invention provides technical support for realizing industrialization of the branch type blood vessel.

In step (1) of the above embodiment, A, B, C, D four connection points are distributed around the circumference of the connection end 110, and the positioning point set by the edge of the incision 210 of the main blood vessel 200 corresponds to the position of the connection point 111. After each distributed connection point 111 is fixedly connected with the corresponding positioning point, the positioning connection position of the branch blood vessel 100 on the main blood vessel 200 is more accurate, and the positioning precision can be improved.

It is understood that, for improving the positioning accuracy, the connection points 111 may be set to three, six, or eight other numbers of connection points distributed around the circumference of the connection end 110, which is not limited herein.

In the above embodiment, the step (2) of fixing the connection point 111 and the positioning point includes: stitches connect the attachment points 111 with anchor points. In practice, the needle-carrying suture 500 may be used to suture the positioning point and the connection point 111 and tie the positioning point and the connection point for fixation. The adoption of the suture connection mode has firm positioning and difficult thread release, and prevents the positioning failure caused by the separation of the branch blood vessel 100 and the main blood vessel 200 after the positioning.

In step (4) of the above embodiment, the operation starting end 301 is circumferentially sutured around the branch vessel 100 from the starting point 410 a plurality of times, specifically including: referring to fig. 3, after the suture needle is operated to drive the starting end 301 to penetrate into the main vessel 200 from the edge of the incision 210 and to penetrate out of the vessel wall of the branch vessel 100, the starting end 301 passes through the suture loop 310 formed by the suture thread 300 and is pulled tightly to form a suture point 420, and the above operation is repeated circumferentially around the branch vessel 100 to form a plurality of suture points 420. In this embodiment, the distance between adjacent suture points 420 is preferably 0-5mm, the position where the starting end 301 passes through the edge of the incision 210 is 0-5mm away from the edge of the incision 210 during the suture operation, and the position where the starting end 301 passes through the vessel wall of the branch vessel 100 is 0-5mm away from the end surface of the connecting end 110.

In some embodiments, when the formed stitching point 420 overlaps the connection point 111 and the location point during the interval stitching process, the connection point 111 and the location point are separated before the stitching operation, that is, the stitching of the connection point 111 and the location point is removed, and then the stitching point 420 is formed. Of course, in some other embodiments, if the distance between the stitching point to be formed and the connection point and the positioning point is very short, the stitching point may be formed near the connection position, so as to avoid removing the stitching line between the connection point and the positioning point, and to some extent, the stitching speed may be increased, which is not limited herein.

In some embodiments, the suture tracks formed by the sequential connection of the plurality of suture points 420 are formed to encircle the circumference of the branch vessel 100. The multiple loops of the circumferential suture 420 may make the suture connection more secure, reducing the probability of the branch vessel 100 becoming detached from the main vessel 200. Of course, in other embodiments, the suture track formed by connecting the plurality of suture points 420 in sequence may also be formed in a single circle around the circumference of the branch vessel 100, which is not limited herein.

Further, a hitch lock edge may be disposed between two adjacent stitching points 420. Specifically, set up the hitch serging and include: after the sewing point 420 is formed, a connecting line segment is formed between the sewing point 420 and the previous sewing point, at this time, the starting end 301 is passed through the lower part of the connecting line segment so that the sewing thread 300 forms a noose loop, and the noose locking edge can be formed by continuously operating the starting end 301 to pass through the noose loop and tensioning. The plurality of suture points 420 formed circumferentially around the branch vessel 100 may enhance the connection stability of the branch vessel 100 on the main vessel 200; the hitching and overlocking in the suturing process avoids the thread falling of the branch vessel 100 caused by the local fracture of the suture thread in the using process, and even if the connecting line segment between the two suturing points 420 is fractured, the suturing points can not be loosened.

It is understood that, when the step (4) is performed to suture the branch vessel 100 at intervals circumferentially, other suturing methods can be used, such as directly suturing the connecting end 110 of the branch vessel 100 with the cut hole 210 of the main vessel 200 through a plurality of needles and performing a fixed connection, which is not limited herein.

In the above embodiment, the operation of knotting the starting end 301 and the part of the suture 300 exposed from the starting point 410 in the step (5) specifically includes: the start end 301 is passed through the suture point 420 formed by the last suture and then passed under the connecting line segment between the start point 410 and the first suture point 420 so that the suture 300 forms a knotted loop, the start end 301 is operated to pass through the knotted loop and is pulled tightly, and finally the start end 301 is knotted with the portion of the suture 300 exposed from the start point 410. In the operation, when the suture is finished, the starting end 301 firstly passes through the knotting coil and is tensioned to form a noose, then is connected with the part of the suture line 300 exposed out of the starting point 410 to form a finishing knot, the double finishing knotting operation of the noose and the finishing knot enables the suture line 300 to form a complete and firm closed loop, the fixing form of the suture line 300 is more stable, the occurrence of the thread-off condition is avoided, and the use safety is higher.

In the above embodiment, the position where the starting end 301 passes through the edge of the incision 210 during the suturing operation is 0-5mm away from the edge of the incision 210, and the position where the starting end 301 passes through the vessel wall of the branch vessel 100 is 0-5mm away from the end of the connecting end 310.

In the above embodiment, the knotting includes knotting a loose knot or a dead knot; the suture used may be selected from conventional medical sutures, and is not limited herein.

The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular references include plural references unless there is a significant difference in context, scheme or the like between them.

The above description is intended to be illustrative of the present invention and not to limit the scope of the invention, which is defined by the claims appended hereto.

Those skilled in the art will appreciate that various features of the above-described embodiments may be omitted, added, or combined in any way, and for the sake of brevity, all possible combinations of features of the above-described embodiments will not be described, however, so long as there is no contradiction between these combinations of features, and simple variations and structural variations which are adaptive and functional to the prior art, which can occur to those skilled in the art, should be considered within the scope of this description.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that while the present invention has been shown and described with reference to various embodiments, it will be understood by those skilled in the art that various changes and modifications in form and detail may be made without departing from the spirit of the invention and these are within the scope of the invention as defined by the appended claims. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An artificial blood vessel suturing method, comprising:

2. The method of claim 1, wherein the suture thread comprises a starting end and a final end, and the starting end is operated to penetrate from the surface of the main vessel and penetrate from the vessel wall of the branch vessel and then is knotted, so as to form the starting point;

3. The method for suturing an artificial blood vessel according to claim 1, wherein the number of the connection points and the positioning points are two or more, the connection points are circumferentially distributed around the connection end, and the positioning points are corresponding to the connection points and distributed at the edge of the incision.

4. The artificial blood vessel suturing method according to claim 1, wherein the fixing the connecting point and the positioning point comprises: and sewing the connecting points and the positioning points.

5. The method of claim 1, wherein the manipulating the suture line to circumferentially suture around the branch vessel a plurality of times starting from the starting point comprises: after the starting end is operated to penetrate from the surface of the main blood vessel and penetrate out from the blood vessel wall of the branch blood vessel, the starting end penetrates through a loop formed by the suture and is tensioned to form a suture point, and the operation is repeated circumferentially around the branch blood vessel to form a plurality of suture points.

6. The method according to claim 5, wherein the connecting point and the positioning point are separated when the suture point overlaps with the positions of the connecting point and the positioning point during the circumferential suturing around the branch vessel.

7. The method for suturing an artificial blood vessel according to claim 5, wherein a suture track formed by connecting a plurality of the suture points in sequence surrounds the branch blood vessel in a plurality of circles.

8. The method of claim 5, wherein the manipulating the suture line circumferentially sutures around the branch vessel a plurality of times from the starting point, further comprises disposing a hitch lock edge between two adjacent suture points; set up the hitch serging and include: after the suture point is formed, the starting end passes through the lower part of a connecting line segment between the suture point and the previous suture point so as to enable the suture line to form a loop coil, and the starting end is operated to pass through the loop coil and is tensioned to form a loop lock edge.

9. The method of claim 2, wherein said manipulating the starting end to tie a knot with a portion of the suture that exposes the starting point comprises: the starting end penetrates out of a stitching point formed by the last stitching and then penetrates below a connecting line segment between the starting point and the first stitching point so as to enable the stitching line to form a knotting coil, the starting end is operated to penetrate through the knotting coil and be tensioned, and finally the starting end and the part of the stitching line exposed out of the starting point are knotted.

10. The method of suturing an artificial blood vessel according to claim 2 or 5, wherein the starting end is penetrated from the surface of the blood vessel body 0-5mm from the edge of the incision; and/or the starting end penetrates out of the vessel wall of the branch vessel which is 0-5mm away from the end surface of the connecting end.

11. The method of suturing an artificial blood vessel according to claim 5, wherein the adjacent spacing of the plurality of suture points is 0-5 mm.

12. An artificial blood vessel obtained by the method for suturing an artificial blood vessel according to any one of claims 1 to 11.