CN112274203B - Artificial blood vessel anastomosis device - Google Patents
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- CN112274203B CN112274203B CN202011175815.5A CN202011175815A CN112274203B CN 112274203 B CN112274203 B CN 112274203B CN 202011175815 A CN202011175815 A CN 202011175815A CN 112274203 B CN112274203 B CN 112274203B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B17/115—Staplers for performing anastomosis in a single operation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2/064—Blood vessels with special features to facilitate anastomotic coupling
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B2017/1107—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis for blood vessels
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B2017/1132—End-to-end connections
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Abstract
The invention provides an artificial blood vessel anastomosis device. The invention provides an artificial blood vessel anastomosis device, which is used for anastomosing a self blood vessel with an artificial blood vessel, so that an anastomosis surface is formed between the self blood vessel and the artificial blood vessel, and comprises a handle, a push rod, an artificial blood vessel gasket, a self-locking needle and a needle head lock catch.
Description
Technical Field
The invention relates to the field of medical appliances, in particular to an artificial blood vessel anastomosis device.
Background
With the improvement of the current quality of life and the diagnosis and treatment technology level, the number of patients with the macrovascular disease is increased year by year, and the current macrovascular disease related treatment is divided into surgical artificial vascular anastomosis and surgical vascular stent intervention, and the average cost is as high as 15-20 ten thousand per person. The surgical artificial blood vessel anastomosis adopts an end-to-end anastomosis mode, so that the surgical operation has large trauma and more complications, bleeding and wrinkling are easy to cause, in addition, the manual anastomosis has long time consumption and high requirement on the level of an operator, a learning curve is long, the operation is difficult, in addition, the extracorporeal circulation time is increased, the coagulation function is destroyed, the hospitalization time is prolonged, the hospitalization cost is increased, if three branch blood vessels at the arch part need to be replaced in the operation, the circulation is stopped, the cerebral protection is performed in the same direction as the perfusion, and the occurrence rate and the death rate of cerebrovascular accidents of patients are greatly increased; the interventional therapy of the intravascular stent is minimally invasive, but has limited indication, has higher selectivity to patients, is simple to rely on the internal bracing effect of the covered stent, is easy to form internal leakage or pseudoaneurysm due to mismatching of sizes and inaccurate alignment, and has a disintegration risk. Therefore, research on an artificial blood vessel anastomosis device which has both internal and external functions, can reduce anastomosis time, is reliable in anastomosis, is convenient to operate and has low risk becomes a technical problem to be solved in the field.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to provide an artificial blood vessel anastomosis device which has the advantages of both internal and external functions, reduced anastomosis time, reliable anastomosis, convenient operation and low risk.
The invention provides an artificial blood vessel anastomosis device, which is used for anastomosing an autologous blood vessel with an artificial blood vessel to form an anastomotic surface between the autologous blood vessel and the artificial blood vessel, and comprises:
the handle comprises an outer sheath and an inner tube, and a channel is formed between the outer sheath and the inner tube;
the push rod is positioned in the channel and can slide along the channel;
when the autologous blood vessel is anastomosed with the artificial blood vessel, the artificial blood vessel gasket shields the outlet of the channel and is positioned at one side of the artificial blood vessel away from the anastomotic surface;
the self-locking needle is provided with a fixed end and a needle head end, when the self-body blood vessel is anastomosed with the artificial blood vessel, the fixed end of the self-locking needle is propped against one end of the push rod, so that the push rod pushes the self-locking needle to slide in the channel and is fixed on the artificial blood vessel gasket after penetrating out from the outlet of the channel;
the needle head lock catch is arranged on the artificial blood vessel gasket, is matched with the needle head end of the self-locking needle and is used for locking with the needle head end of the self-locking needle.
Further, the artificial blood vessel anastomosis device further comprises:
and the autologous blood vessel outer band is positioned at one side of the autologous blood vessel away from the anastomotic surface when the autologous blood vessel is anastomosed with the artificial blood vessel.
Further, the artificial blood vessel anastomosis device further comprises:
the self-blood vessel outer buckle is internally provided with a groove, when the self-blood vessel outer buckle is buckled on the self-blood vessel outer belt, a self-locking needle channel is formed between the self-blood vessel outer buckle and the self-blood vessel outer belt, so that the inlet of the self-locking needle channel is opposite to the outlet of the channel, and the outlet of the self-locking needle channel is opposite to the needle lock catch.
Further, the outer sheath and the inner tube are provided with side holes for blood to flow into and out of the inner tube.
Further, the artificial blood vessel anastomosis device further comprises:
the annular saccule is arranged in the accommodating cavity of the inner tube and is positioned at one end of the handle close to the anastomotic surface;
and the ingress pipe is connected with the annular balloon and is used for introducing gas or liquid into the annular balloon to expand the annular balloon so as to compress the anastomotic surface of the artificial blood vessel and the autologous blood vessel.
Further, the introduction pipe is provided in the passage.
Further, the artificial blood vessel comprises an artificial blood vessel body, the inner wall of the blood vessel at one end part of the artificial blood vessel body is folded and folded towards the outer side of the artificial blood vessel body to form a folding part, the non-folding part forms a straight pipe part,
when the autologous blood vessel is anastomosed with the artificial blood vessel, the straight tube part is positioned in the accommodating cavity of the inner tube, and one end of the handle, which is close to the anastomotic plane, stretches into a gap between the straight tube part and the turnover part of the artificial blood vessel.
Further, the artificial blood vessel body is made of at least one of nylon, terylene and polytetrafluoroethylene.
Further, the self-locking needle is made of titanium alloy.
Further, the outer sheath, the inner tube and the push rod are made of elastic materials, and the elastic materials comprise polypropylene.
The technical scheme of the invention has the following advantages:
1. the artificial blood vessel anastomosis device provided by the invention comprises a handle, a push rod, an artificial blood vessel gasket, a self-locking needle and a needle head lock catch, wherein the needle head end of the self-locking needle is pushed out of a channel by pushing the push rod to pass through the artificial blood vessel gasket, the artificial blood vessel and the self blood vessel, and the needle head end of the self-locking needle is penetrated back to the self blood vessel and the artificial blood vessel by manpower or other modes and enters the needle head lock catch on the artificial blood vessel gasket to finish locking; for internal medicine, the invention does not contain a bracket to avoid the bracket from shifting, disintegrating or damaging blood vessels, and has the advantage of definite surgical anastomosis, thereby avoiding the formation of endoleak.
2. The invention provides an artificial blood vessel anastomosis device, which further comprises: when the autologous blood vessel is anastomosed with the artificial blood vessel, the autologous blood vessel outer band is positioned on one side of the autologous blood vessel away from the anastomotic surface, and the autologous blood vessel and the artificial blood vessel can be clamped between the autologous blood vessel outer band and the artificial blood vessel gasket when the artificial blood vessel is anastomosed by arranging the autologous blood vessel outer band, so that the anastomotic structure is more stable, and the anastomotic site is further reinforced or sutured.
3. The invention provides an artificial blood vessel anastomosis device, which further comprises: the self-blood vessel outer buckle is internally provided with a groove, and when the self-blood vessel outer buckle is buckled on the self-blood vessel outer belt, a self-locking needle channel is formed between the self-blood vessel outer buckle and the self-blood vessel outer belt, so that the inlet of the self-locking needle channel is opposite to the outlet of the channel, and the outlet of the self-locking needle channel is opposite to the needle lock. Through setting up the autologous blood vessel outer knot, take place deformation when the auto-lock needle gets into auto-lock needle channel and pass autologous blood vessel, artificial blood vessel gasket again and lock with the syringe needle hasp after wearing out by auto-lock needle channel, need not manual buckling auto-lock needle to accomplish the anastomotic reinforcement between artificial blood vessel and autologous blood vessel, convenient operation, swift, show and shorten operation time, reduce the operation risk.
4. The invention provides an artificial blood vessel anastomosis device, wherein side holes for blood to flow out of a handle from an inner tube are formed on an outer sheath and the inner tube. By arranging the side hole, when the artificial blood vessel anastomotic device is used for anastomosing the artificial blood vessel with the autologous blood vessel, blood sequentially passes through the holding cavity of the artificial blood vessel-the side hole of the inner tube-the distal end of the anastomotic stoma, so that the ischemia of the tissue at the distal end and the excessive pressure of the anastomotic site are avoided.
5. The invention provides an artificial blood vessel anastomosis device, which further comprises: the annular saccule is arranged in the accommodating cavity of the inner tube and is positioned at one end of the handle close to the anastomotic surface; and the ingress pipe is connected with the annular balloon and is used for introducing gas or liquid into the annular balloon to expand the annular balloon so as to compress the anastomotic surface of the artificial blood vessel and the autologous blood vessel. By adopting the structure, the rapid anastomosis between the artificial blood vessel and the autologous blood vessel can be realized, so that the anastomosis area between the artificial blood vessel and the autologous blood vessel is larger and more stable.
6. The artificial blood vessel anastomosis device provided by the invention comprises an artificial blood vessel body, wherein the inner wall of a blood vessel at one end part of the artificial blood vessel body is folded towards the outer side of the artificial blood vessel body to form a folded part, the unfolded part forms a straight pipe part, when the autologous blood vessel is anastomosed with the artificial blood vessel, the straight pipe part is positioned in a containing cavity of the inner pipe, and one end of a handle close to an anastomosis surface stretches into a gap between the straight pipe part and the folded part of the artificial blood vessel. Can make the one end blood vessel inner wall of artificial blood vessel body turn up through forming the turning over portion, can realize when artificial blood vessel kisses that the blood vessel inner wall of turning over portion and autologous blood vessel are attached, have following advantage: the inner membrane and the inner membrane are convenient to attach, the anastomotic contact area is increased, the anastomotic stoma bleeding is reduced, the anastomotic surface is more attached, the anastomotic stability is increased, the anastomotic stoma thrombus, the pseudo-aneurysm and the internal leakage after intervention are prevented from being formed, and the stent has the advantages of surgical artificial blood vessel anastomosis and internal and external surgical vascular anastomosis, can also play the role of an intravascular stent, replace the existing covered stent and avoid the damage of the stent to the autologous blood vessel and the stent disintegration.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an artificial vascular anastomosis device according to an embodiment of the present invention;
fig. 2 is a schematic diagram of the structure of the artificial blood vessel after anastomosis with the autologous blood vessel according to the embodiment of the present invention.
Reference numerals:
1-autologous blood vessels; 2-a handle; 3-an outer sheath; 4-an inner tube; 5-channel; 6-pushing rod; 7-artificial blood vessel gaskets; 8-self-locking needles; 9-needle lock catch; 10-anastomosis head; 11-a receiving cavity; 12-a turnover part; 13-straight tube part; 14-autologous extravascular zone; 15-autologous vessel external buckling; 16-self locking needle channel; 17-an annular balloon; 18-ingress pipe; 19-syringe.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
As shown in fig. 1 and 2, the present invention provides an artificial blood vessel anastomosis device for anastomosis of a native blood vessel 1 with an artificial blood vessel, so that an anastomosis surface is formed between the native blood vessel 1 and the artificial blood vessel, the artificial blood vessel anastomosis device comprising:
a handle 2 comprising an outer sheath 3 and an inner tube 4, a channel 5 being formed between the outer sheath 3 and the inner tube 4;
a push rod 6 which is positioned in the channel 5 and can slide along the channel 5;
an artificial blood vessel gasket 7, when the autologous blood vessel 1 is anastomosed with the artificial blood vessel, the artificial blood vessel gasket 7 shields the outlet of the channel 5 and is positioned at one side of the artificial blood vessel away from the anastomotic surface;
the self-locking needle 8 is provided with a fixed end and a needle head end, when the self-body blood vessel 1 is anastomosed with the artificial blood vessel, the fixed end of the self-locking needle 8 is propped against one end of the push rod 6 so that the push rod 6 pushes the self-locking needle to slide in the channel 5 and is fixed on the artificial blood vessel gasket 7 after penetrating out through the outlet of the channel 5;
the needle lock catch 9 is arranged on the artificial blood vessel gasket 7, is matched with the needle end of the self-locking needle 8 and is used for locking with the needle end of the self-locking needle 8.
According to the artificial blood vessel anastomosis device provided by the invention, the needle end of the self-locking needle 8 is pushed out of the channel 5 by pushing the push rod 6, so that the needle end passes through the artificial blood vessel gasket 7, the artificial blood vessel and the autologous blood vessel 1, the needle end of the self-locking needle 8 passes back through the autologous blood vessel 1 and the artificial blood vessel in a manual or other mode and enters the needle lock catch 9 on the artificial blood vessel gasket 7 to finish locking, the anastomosis time can be reduced by using the handle 2, the anastomosis is reliable, the operation in operation is convenient, the anastomosis technical requirement on an operator is low, the learning curve is short, the extracorporeal circulation time is reduced, the damage of extracorporeal circulation to the blood coagulation function is reduced, and if three branch blood vessels at the bow part are required to be replaced in the operation, the circulatory stopping time is short, and the occurrence of cerebral vascular accidents of a patient can be greatly reduced; for internal medicine, the invention does not contain a bracket to avoid the bracket from shifting, disintegrating or damaging blood vessels, and has the advantage of definite surgical anastomosis, thereby avoiding the formation of endoleak.
As an alternative embodiment of the handle 2, the materials of the outer sheath 3 and the inner tube 4 are made of elastic materials, and the elastic materials comprise hard medical materials such as polypropylene. Preferably, the diameter of one end of the handle 2 is enlarged to form an anastomotic head 10, and the outer diameter of the anastomotic head 10 is required to be close to the inner diameters of the artificial blood vessel and the autologous blood vessel 1 so as to facilitate anastomosis between the artificial blood vessel and the autologous blood vessel 1. An annular channel or a plurality of cylindrical channels for sliding the push rod 6 can be formed between the outer sheath 3 and the inner tube 4, and a channel which is communicated with the channel 5 and can be used for sliding the self-locking needle 8 is also formed at the anastomotic head 10.
As a further improvement of the handle 2, the outer sheath 3 and the inner tube 4 are provided with side holes for blood to flow out of the handle 2 from the inner tube. By arranging the side hole, when the artificial blood vessel anastomosis device is used for anastomosing the artificial blood vessel with the autologous blood vessel 1, blood sequentially passes through the holding cavity of the artificial blood vessel-the inner tube, the side hole and the distal end of the anastomosis port, so that the ischemia of the distal tissue and the excessive pressure of the anastomosis part are avoided.
As an alternative embodiment of the push rod 6, the push rod 6 is made of an elastic material, and the elastic material comprises a hard medical material such as polypropylene. The push rod 6 can be of a rod-shaped structure corresponding to the self-locking needles 8 one by one or of a cylindrical structure sleeved in the annular channel 5. One end of the push rod 6 extends out of the annular channel 5, and the other end of the push rod abuts against the fixed end of the self-locking needle 8. Preferably, when the push rods 6 are in rod-like structures corresponding to the self-locking needles 8 one by one, one end of each rod-like structure extending out of the annular channel 5 is connected to a main control member, for example, the end of each rod-like structure is connected to an annular structure, so that the linkage of a plurality of push rods 6 is realized.
As an optional anastomosis mode, the artificial blood vessel and the autologous blood vessel 1 are of straight tubular structures, the anastomosis ends of the artificial blood vessel and the autologous blood vessel 1 are sleeved together, and an anastomosis surface is formed between the outer wall of the artificial blood vessel and the inner wall of the autologous blood vessel 1. As another preferred anastomosis method, the artificial blood vessel includes an artificial blood vessel body, wherein the inner wall of a blood vessel at one end of the artificial blood vessel body is folded and folded to the outside of the artificial blood vessel body to form a folded part 12, and the unfolded part 12 forms a straight tube part 13. When the autologous blood vessel 1 is anastomosed with the artificial blood vessel, the straight tube part 13 is positioned in the accommodating cavity 11 of the inner tube 4, and one end of the handle 2 close to the anastomotic surface stretches into a gap between the artificial blood vessel straight tube part 13 and the turnover part 12. As an optional implementation mode of the artificial blood vessel body, the material of the artificial blood vessel body comprises at least one of nylon, dacron (Dacron) and Polytetrafluoroethylene (PTFE), or other conventional medical polymer materials are selected.
Can make the one end blood vessel inner wall of artificial blood vessel body turn up through forming the turning over portion 12, can realize when artificial blood vessel kisses that the blood vessel inner wall of turning over portion 12 is attached with the blood vessel inner wall of autologous blood vessel 1, have following advantage: the inner membrane and the inner membrane are convenient to attach, the anastomotic contact area is increased, the anastomotic stoma bleeding is reduced, the anastomotic surface is more attached, the anastomotic stability is increased, the anastomotic stoma thrombus, the pseudo-aneurysm and the internal leakage after intervention are prevented from being formed, and the stent has the advantages of surgical artificial blood vessel anastomosis and internal and external surgical vascular anastomosis, can also play the role of an intravascular stent, replace the existing covered stent and avoid the damage of the stent to the autologous blood vessel 1 and the stent disintegration.
As an alternative embodiment of the artificial blood vessel pad 7, the material of the artificial blood vessel pad can be terylene, and the artificial blood vessel pad is in a sheet-shaped or annular band-shaped structure, and is positioned between the artificial blood vessel folding part 12 and the anastomosis head 10 of the handle 2 when the artificial blood vessel anastomosis is performed.
As an alternative embodiment of the self-locking needle 8, a material with plastic deformability, such as titanium alloy, is chosen so that the self-locking needle 8 deforms as the channel bends as it passes in the self-locking needle channel 16. Preferably, the fixed end of the self-locking needle 8 has a fixing portion, such as a block, a sheet-like protrusion, etc., which is used for abutting against the push rod 6 to increase the contact area with the push rod 6, and is used for fixing the fixed end with the artificial blood vessel gasket 7 without being separated from the artificial blood vessel gasket 7 when the needle end is locked with the needle lock 9. The needle tip of the self-locking needle 8 is provided with a needle tip part, so that the self-locking needle can penetrate through the vascular wall of the artificial blood vessel gasket 7 and the artificial blood vessel and the autologous blood vessel 1. Preferably, the number of self-locking needles 8 is plural, distributed uniformly along the circumference of the anastomosis head 10.
As an alternative implementation mode of the needle lock catch 9, the needle lock catch 9 is arranged in the artificial blood vessel gasket 7, the needle end of the self-locking needle 8 is provided with a barb structure, the needle lock catch 9 is also provided with a barb structure, and when the needle end of the self-locking needle 8 enters the lock catch, the needle lock catch can not only enter or exit, and locking is completed. In addition, the needle lock 9 and the self-locking needle 8 can also adopt other conventional self-locking structures capable of achieving the functions, and the invention is within the scope of protection.
As a preferred embodiment of the vascular anastomosis device of the present invention, further comprising: autologous blood vessel external band 14, when anastomosis is performed between autologous blood vessel 1 and an artificial blood vessel, autologous blood vessel external band 14 is located on the side of autologous blood vessel 1 away from the anastomotic plane.
By arranging the autologous-vessel external belt 14, the autologous vessel 1 and the artificial blood vessel can be clamped between the autologous-vessel external belt 14 and the artificial blood vessel gasket 7 during anastomosis of the artificial blood vessel, the anastomosis structure is more stable, and the anastomosis part can be further reinforced or sutured.
As an alternative embodiment of the autologous blood vessel external band 14, terylene can be selected as a material, and the autologous blood vessel external band has an annular band-shaped structure, the size of which is matched with the external diameter of the autologous blood vessel 1, and the autologous blood vessel external band surrounds the blood vessel external wall of the anastomotic site of the autologous blood vessel 1 when the anastomosis of the artificial blood vessel is performed.
As a preferred embodiment of the vascular anastomosis device of the present invention, further comprising: the self-blood vessel outer buckle 15 is internally provided with a groove, when the self-blood vessel outer buckle 15 is buckled on the self-blood vessel outer belt 14, a self-locking needle channel 16 is formed between the self-blood vessel outer buckle 15 and the self-blood vessel outer belt 14, so that the inlet of the self-locking needle channel 16 is opposite to the outlet of the channel 5, and the outlet of the self-locking needle channel 16 is opposite to the needle lock 9.
Through setting up the autologous blood vessel outer knot 15, take place deformation when auto-lock needle 8 gets into auto-lock needle channel 16 and pass autologous blood vessel 1, artificial blood vessel gasket 7 again and lock with syringe needle hasp 9 after wearing out by auto-lock needle channel 16 to accomplish the anastomotic reinforcement between artificial blood vessel and autologous blood vessel 1, convenient operation, swift, show and shorten operation time, reduce the operation risk.
As an alternative embodiment of the autologous blood vessel external buckle 15, a detachable annular buckle belt is adopted, both ends of the buckle belt can be connected by a buckle or other detachable connection modes, and the autologous blood vessel external buckle 15 is detached after the needle head end of the self-locking needle 8 is locked with the needle head lock catch 9.
As a preferred embodiment of the vascular anastomosis device of the present invention, further comprising:
the annular saccule 17 is arranged in the accommodating cavity 11 of the inner tube 4 and is positioned at one end of the handle 2 close to the anastomotic surface;
an introduction tube 18 connected to the annular balloon 17 for introducing gas or liquid into the annular balloon 17 to expand the same, thereby compressing the anastomotic surface of the artificial blood vessel and the autologous blood vessel 1. The structure can realize the rapid anastomosis between the artificial blood vessel and the autologous blood vessel 1, so that the anastomosis area between the artificial blood vessel and the autologous blood vessel is larger and more stable.
As an alternative embodiment of the annular balloon 17, the annular balloon 17 has an elastic saccular structure, and when the inside is inflated or liquid is introduced, the annular balloon 17 expands to press the elastic anastomosis head 10 outwards so as to press the inner wall of the blood vessel of the artificial blood vessel turnup 12 with the inner wall of the autologous blood vessel 1. Preferably, an introduction tube 18 is provided in the passage 5, with one end extending out of the annular passage 5 to be injected therein by a syringe 19 or blown therein by an air pump, and with the other end connected to the annular balloon 17.
The application method of the artificial blood vessel anastomosis device provided by the embodiment of the invention comprises the following steps:
as shown in figure 1, a self-locking needle 8 is arranged in a channel 5 at an anastomotic head 10 of a handle 2, an artificial blood vessel gasket 7 is arranged at the outer side of the anastomotic head 10 of the handle 2, the artificial blood vessel gasket 7 shields the outlet of the channel 5, a straight tube part 13 of an artificial blood vessel body to be anastomosed is accommodated in a containing cavity 11 in the handle 2, the anastomotic head 10 and the artificial blood vessel gasket 7 extend between the straight tube part 13 and a turnover part 12 of the artificial blood vessel body, the handle 2 is held to send the anastomotic head 10 into an anastomotic part of the autologous blood vessel 1 under direct vision or X-ray guidance, an autologous blood vessel external belt 14 is correspondingly arranged at the outer side of the anastomotic part of the autologous blood vessel 1, an autologous blood vessel external buckle 15 is buckled on the autologous blood vessel external belt 14, the inlet and the outlet of a self-locking needle channel 16 are respectively corresponding to the positions of the outlet of the channel 5 and a needle lock 9 up and down, the injector 19 is used for injecting water into the annular saccule 17 through the ingress pipe 18 to expand the annular saccule so as to press the elastic anastomosis head 10 to expand outwards, so that the inner wall of the blood vessel of the artificial blood vessel turnover part 12 is attached to the inner wall of the autologous blood vessel 1, after the firmness is confirmed, the push rod 6 is pushed, the self-locking needle 8 sequentially penetrates through the channel 5, the artificial blood vessel gasket 7, the artificial blood vessel, the autologous blood vessel 1, the self-locking needle channel 16, the autologous blood vessel 1, the artificial blood vessel and the artificial blood vessel gasket 7 and is locked with the needle lock catch 9, at the moment, the fixed end of the self-locking needle 8 is clamped on the artificial blood vessel gasket 7, the anastomosis head 10 is withdrawn by the handle 2, the autologous blood vessel outer buckle 15 is removed, the artificial blood vessel anastomosis process is completed, and the final structure is shown in figure 2.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (8)
1. An artificial blood vessel anastomosis device for anastomosis of a native blood vessel with an artificial blood vessel to form an anastomosis surface between the native blood vessel and the artificial blood vessel, the artificial blood vessel anastomosis device comprising:
the handle comprises an outer sheath and an inner tube, and a channel is formed between the outer sheath and the inner tube;
the push rod is positioned in the channel and can slide along the channel;
when the autologous blood vessel is anastomosed with the artificial blood vessel, the artificial blood vessel gasket shields the outlet of the channel and is positioned at one side of the artificial blood vessel away from the anastomotic surface;
the self-locking needle is provided with a fixed end and a needle head end, when the self-body blood vessel is anastomosed with the artificial blood vessel, the fixed end of the self-locking needle is propped against one end of the push rod, so that the push rod pushes the self-locking needle to slide in the channel and is fixed on the artificial blood vessel gasket after penetrating out from the outlet of the channel;
the needle head lock catch is arranged on the artificial blood vessel gasket, is matched with the needle head end of the self-locking needle and is used for locking with the needle head end of the self-locking needle;
an autologous blood vessel external band, when the autologous blood vessel is anastomosed with the artificial blood vessel, the autologous blood vessel external band is positioned at one side of the autologous blood vessel away from the anastomotic surface;
the self-blood vessel outer buckle is internally provided with a groove, when the self-blood vessel outer buckle is buckled on the self-blood vessel outer belt, a self-locking needle channel is formed between the self-blood vessel outer buckle and the self-blood vessel outer belt, so that the inlet of the self-locking needle channel is opposite to the outlet of the channel, and the outlet of the self-locking needle channel is opposite to the needle lock catch.
2. The vascular anastomosis device of claim 1, wherein the outer sheath and inner tube are provided with side holes for blood to flow from the inner tube to the outside of the handle.
3. The vascular anastomosis device of claim 1, further comprising:
the annular saccule is arranged in the accommodating cavity of the inner tube and is positioned at one end of the handle close to the anastomotic surface;
and the ingress pipe is connected with the annular balloon and is used for introducing gas or liquid into the annular balloon to expand the annular balloon so as to compress the anastomotic surface of the artificial blood vessel and the autologous blood vessel.
4. The vascular anastomosis device of claim 3, wherein the ingress tube is disposed within the channel.
5. The anastomosis device according to claim 1, wherein the blood vessel includes a vessel body, the vessel inner wall of one end portion of the vessel body is folded to the outside of the vessel body to form a folded portion, the unfolded portion is formed as a straight tube portion,
when the autologous blood vessel is anastomosed with the artificial blood vessel, the straight tube part is positioned in the accommodating cavity of the inner tube, and one end of the handle, which is close to the anastomotic plane, stretches into a gap between the straight tube part and the turnover part of the artificial blood vessel.
6. The vascular anastomosis device of claim 5, wherein the vascular prosthesis body is formed of at least one of nylon, dacron, and polytetrafluoroethylene.
7. The vascular anastomosis device of claim 1, wherein the self-locking needle comprises a titanium alloy.
8. The vascular anastomosis device of claim 1, wherein the outer sheath, inner tube and pushrod are each formed from an elastic material comprising polypropylene.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8066724B2 (en) * | 2002-09-12 | 2011-11-29 | Medtronic, Inc. | Anastomosis apparatus and methods |
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| CN112274203A (en) | 2021-01-29 |
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