CN113397761A - Suturing-free artificial blood vessel and conveying device thereof - Google Patents
Suturing-free artificial blood vessel and conveying device thereof Download PDFInfo
- Publication number
- CN113397761A CN113397761A CN202110586361.9A CN202110586361A CN113397761A CN 113397761 A CN113397761 A CN 113397761A CN 202110586361 A CN202110586361 A CN 202110586361A CN 113397761 A CN113397761 A CN 113397761A
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- blood vessel
- artificial blood
- connecting pipe
- free
- suture
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- 210000004204 blood vessel Anatomy 0.000 title claims abstract description 73
- 239000002473 artificial blood Substances 0.000 title claims abstract description 57
- 239000011248 coating agent Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims abstract description 4
- 238000003780 insertion Methods 0.000 claims description 12
- 230000037431 insertion Effects 0.000 claims description 12
- 210000000078 claw Anatomy 0.000 claims description 7
- 239000011241 protective layer Substances 0.000 claims description 6
- 230000002792 vascular Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 239000007779 soft material Substances 0.000 claims description 2
- 230000003872 anastomosis Effects 0.000 abstract description 6
- 239000008280 blood Substances 0.000 abstract description 5
- 210000004369 blood Anatomy 0.000 abstract description 5
- 208000032843 Hemorrhage Diseases 0.000 description 4
- 201000010099 disease Diseases 0.000 description 4
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 3
- 208000024172 Cardiovascular disease Diseases 0.000 description 2
- 208000002251 Dissecting Aneurysm Diseases 0.000 description 2
- 206010002895 aortic dissection Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 206010056346 Anastomotic haemorrhage Diseases 0.000 description 1
- 206010058178 Aortic occlusion Diseases 0.000 description 1
- 208000010496 Heart Arrest Diseases 0.000 description 1
- 206010054805 Macroangiopathy Diseases 0.000 description 1
- 210000000709 aorta Anatomy 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 210000003169 central nervous system Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002224 dissection Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000002054 transplantation Methods 0.000 description 1
- 238000007631 vascular surgery Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
Abstract
The invention provides a suture-free artificial blood vessel and a conveying device thereof, comprising: the connecting pipe comprises a connecting pipe main body, wherein the middle section of the connecting pipe main body is cylindrical, the two ends of the connecting pipe main body form a tapered cone, and the outer diameter of the middle section is smaller than that of the two ends of the connecting pipe main body to form a neck structure; the anastomat is matched with the connecting pipe for use, the diameter of the anastomat can be adjusted, one side of the anastomat is provided with a limiting protruding part, and the diameter of various ferrules can be set by presetting a clamping position through the limiting protruding part; the artificial blood vessel body is connected with the connecting pipe, and a coating piece which is coaxially and seamlessly connected with the artificial blood vessel body is arranged on the outer side of the artificial blood vessel body. The invention relates to the technical field of medical instruments, and aims to solve the technical problems of blood leakage and complications caused by difficult anastomosis and overlong anastomosis time of artificial blood vessels in the prior art.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a suture-free artificial blood vessel and a conveying device thereof.
Background
Cardiovascular diseases are one of the common diseases harmful to human health, and the main and auxiliary treatment means of the patients with serious diseases is blood vessel transplantation, the source of autologous blood vessels is limited, so a large amount of artificial blood vessels are clinically needed as a transplant substitute.
In recent years, the incidence of macrovascular diseases such as aortic dissection has been increasing. The aortic dissection is a critical disease in the field of cardiovascular diseases, the disease condition is fierce, and the death rate is high. Surgical treatment is an effective treatment means, but due to the fact that the pathological changes of blood vessels and the pressure of the aorta are high, requirements on surgical anastomotic stoma are high, the operation time is long, bleeding is easy to occur after the operation, the complication rate is high, operation failure is caused directly, and the life of a patient is threatened.
In order to reduce bleeding from the anastomotic orifice, surgeons have made many improvements to the surgical procedure, including improvements in the technique of dissection, the technique of anastomosis, and the addition of preventive measures, etc., but complications such as hemorrhage from major vascular surgery remain high. How to effectively reduce anastomotic bleeding and reduce operation time is a problem to be solved urgently in major vascular operations.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a suturing-free artificial blood vessel and a conveying device thereof.
The invention also provides a suturing-free artificial blood vessel conveying device which can convey the suturing-free artificial blood vessel to a specified position through a catheter and achieve the purpose of connecting the artificial blood vessel with the blood vessel of the human body through a positioner and a control device.
The technical scheme provided by the invention is as follows:
a suture-free vascular prosthesis, comprising: the connecting pipe comprises a connecting pipe main body, wherein the middle section of the connecting pipe main body is cylindrical, the two ends of the connecting pipe main body form a tapered cone, and the outer diameter of the middle section is smaller than that of the two ends of the connecting pipe main body to form a neck structure;
the anastomat is matched with the connecting pipe for use, the diameter of the anastomat can be adjusted, one side of the anastomat is provided with a limiting protruding part, and the diameter of various ferrules can be set by presetting a clamping position through the limiting protruding part;
the artificial blood vessel body is connected with the connecting pipe, and a coating piece which is coaxially and seamlessly connected with the artificial blood vessel body is arranged on the outer side of the artificial blood vessel body.
Further, the connecting pipe also comprises a protective layer which is surrounded on the periphery of the neck part of the connecting pipe main body.
Further, the connecting pipe main body is made of hard materials, and the protective layer is made of soft materials.
Further, the stapler includes:
a belt portion having a plurality of locking teeth formed on an outer surface thereof in a longitudinal direction;
a locking portion provided at one end of the band portion and having an insertion hole through which a free end side of the band portion is inserted;
and a locking claw that is provided inside the insertion opening and selectively locked to the locking tooth.
Further, the band part includes:
and a plurality of limit protrusions which are positioned on one side of the band part and are arranged in the length direction along the band part, and the limit protrusions form a thin-walled part at the connecting part with the band part.
A cushion on the other side of the webbing portion.
The invention also provides a suture-free artificial blood vessel delivery device, which is characterized by comprising:
a handle;
a catheter connected to the handle, having a delivery lumen;
a balloon connectively mounted to a first end of said tube and surrounding said tube;
a control device which is connected and installed at the second end of the conduit;
the fixator is a cylinder or a cone, and the diameter size of the fixator is larger than that of the artificial blood vessel.
Further, the method also comprises the following steps:
a guide wire disposed within the catheter lumen;
the inflation tube is arranged in the inner cavity of the catheter and is communicated with the inflation bag.
Further, the inflatable bag can pass through the artificial blood vessel before inflation, and is in a cone shape or a circular truncated cone shape after inflation, and the maximum diameter of the inflatable bag is larger than the diameter of the artificial blood vessel after inflation.
Advantageous effects
The suturing-free artificial blood vessel and the conveying device thereof effectively reduce the operation difficulty, have simple and easily-mastered operation, simplify the blood vessel anastomosis operation mode, ensure that the anastomosis is safe and effective, avoid blood leakage of an anastomotic stoma, effectively reduce the incidence of complications related to bleeding of the anastomotic stoma, are beneficial to the development of the operation and benefit more patients.
Drawings
FIG. 1 is a schematic structural diagram illustrating a state of use of a suture-free artificial blood vessel according to an embodiment of the present invention;
FIGS. 1a, 1b, and 1c respectively illustrate various operational steps in one embodiment of the present invention;
FIG. 2 is a schematic view of a structure of a connection pipe;
fig. 3 is a schematic structural view of the stapler.
Fig. 4 is a cross-sectional view of a locking portion of a stapler.
FIG. 5 is a structural diagram illustrating a usage state of a suture-free type artificial blood vessel delivery device according to an embodiment of the present invention;
FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;
FIG. 7 is a schematic view of the balloon in a deflated state;
FIG. 8 is a schematic view of the balloon in a semi-expanded state;
FIG. 9 is a schematic view of the balloon in a fully expanded state.
The attached drawings indicate the following: 100. an artificial blood vessel body; 101. a covering member; 110. a connecting pipe; 120. a stapler; 111. a connecting pipe main body; 112. a protective layer; 121. a belt portion; 122. a locking portion; 123. a limit projection part; 124. clamping teeth; 125. an insertion port; 126. a locking claw; 127. a soft cushion; 200. a handle; 210. a conduit; 220. an air-filled bag; 230. a control device; 240. a holder; 211. a guide wire; 212. and an inflation tube.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
Compared with the prior art, the suture-free artificial blood vessel has the following advantages:
as shown in fig. 1, an embodiment of the present invention provides a suture-free artificial blood vessel, including: the connecting pipe 110 is cylindrical, the outer diameter of the middle section of the connecting pipe 110 is slightly thin to form a neck, and the inner diameter of the middle section of the connecting pipe is unchanged; the anastomat 120 is matched with the connecting pipe 110 for use, the length of the anastomat 120 is greater than that of the connecting pipe 110, the diameter of the anastomat 120 is adjustable, and the clamping position can be preset through the limiting protruding part 123; the artificial blood vessel comprises an artificial blood vessel body 100, wherein the artificial blood vessel body 100 is connected with a connecting pipe 110, and a coating part 101 which is coaxially and seamlessly connected with the artificial blood vessel body 100 is arranged on the outer side of the artificial blood vessel body 100.
As shown in fig. 2, the connecting tube body 111 has a smaller outer diameter at the middle section than at the two end sections, forming a neck with a slightly smaller diameter. The connecting pipe main body 111 is made of metal material, the neck is provided with a protective layer 112 formed by winding felt, so that the connecting device can be tightly ligated with artificial blood vessels and autologous blood vessels without blood leakage, and can protect the autologous blood vessel intima well.
As shown in fig. 3, the anastomat 120 of the embodiment of the invention is used in combination with a connecting pipe, and is sleeved outside the blood vessel suture-free connecting part, so as to be used for anastomosing and fixing the suture-free artificial blood vessel and the autologous blood vessel. Because the outer side of the artificial blood vessel is provided with the soft and blood-leakage-free wrapping part 101, and the soft and blood-leakage-free wrapping part is used for tightly attaching and connecting the broken end of the artificial blood vessel and the self blood vessel in a mechanical locking mode (the connecting pipe 110 is placed in the blood vessel suture-free connecting part to provide supporting force, and the anastomat 120 is placed on the outer side of the blood vessel suture-free connecting part to provide locking force) by matching the connecting pipe 110 and the anastomat 120, the blood leakage can be effectively prevented; because the anastomotic orifice is positioned at the outer side of the artificial blood vessel, the anastomotic orifice cannot be directly impacted by the blood flow and the pressure difference of the active artery, and the mechanical locking area is far larger than the continuous anastomotic area, the pressure applied to the blood vessel is more average, and the probability of blood leakage caused by blood vessel tearing can be greatly reduced; in addition, the mechanical locking mode effectively improves the anastomosis speed, shortens the time of aortic occlusion and circulatory arrest, and reduces the incidence and mortality of central nervous system complications.
The stapler 120 of the present invention is preferably configured as follows: the plurality of stopper protrusions 123 are arranged along the longitudinal direction of the band part 121, each stopper protrusion 123 forms a thin portion at a connecting portion with the band part 121, and is configured to come into contact with the locking portion 122 in association with an operation of pulling the free end of the band part 121 drawn out from the outlet side of the insertion opening 125, and to be detachable.
According to such a configuration, before the stapler 120 is fastened, a member at an appropriate position corresponding to the diameter of the artificial blood vessel body 100 is selected in advance from the plurality of set limit protrusions 123. In the artificial blood vessel body 100, if the free end of the band portion 121 is pulled through the insertion opening 125, the portion ahead in the insertion direction of the selected one of the limit projections 123 comes into contact with the locking portion 122 in order from the foremost position, but the limit projections 123 can be broken and detached from the thin portion by applying a predetermined pulling force. Therefore, if all the stopper projections 123 located in the order before the target stopper projection 123 comes into contact with the lock portion 122 can be disengaged by the above-described method and the locking teeth 124 and the locking claws 126 can be locked at the position, the diameter of the ferrule of the stapler 120 becomes a desired diameter. Thus, according to the above configuration, a plurality of desired ferrule diameters can be set.
The width of the band portion 121 of the stapler 120 is gradually narrowed at the free end portion, but the rest of the band portion is formed to have a substantially uniform width until reaching the locking portion 122. A plurality of locking teeth 124 are formed over a predetermined length range on one surface side of the band portion 121 (a surface on the opposite side from the side on which the locking portion 122 is protrudingly provided). As shown in fig. 4, each of the locking teeth 124 is formed by a sawtooth-shaped irregularity.
As shown in fig. 4, an insertion hole 125 is formed through the central portion of the locking portion 122 in the protruding direction of the locking portion 122. The insertion hole 125 is formed so that the band portion 121 can be inserted therethrough from the free end side. The engaging claw 126 is provided in the insertion hole 125 so as to be bendable, and is disposed to face the surface of the band portion 121 on the side where the engaging teeth 124 are formed.
The insertion hole 125 has its entrance side inserted through the free end side of the band portion 121 and is pulled from its exit side, so that the locking claw 126 is selectively locked to the locking tooth 124. In the state where the locking claws 126 and the locking teeth 124 are locked, the movement of the band portion 121 in the direction of the pulling operation is allowed, but the movement in the return direction can be prevented. Thus, at the time of stopping the stretching operation of the band portion 121, the band portion 121 can form and maintain a loop of a desired diameter, and can apply a predetermined tightening force to the artificial blood vessel.
Compared with the prior art, the suture-free artificial blood vessel delivery device has the following advantages:
as shown in fig. 5 and 6, the suture-free artificial blood vessel delivery device provided by the invention comprises: a handle 200, wherein the handle 200 is connected with a fixer 240 through a conduit 210, and the fixer 240 is connected with an inflatable bag 220 through the conduit 210; the suture-free artificial blood vessel conveying device further comprises: a guide wire 211 and an inflation tube 212 are located within the catheter 210, with one end connected to the handle 200 and the other end connected to the inflation bladder 220.
From the analysis, it can be known that, in the suture-free artificial blood vessel delivery device provided by the present invention, when in use, the suture-free artificial blood vessel is placed on the conduit 210 between the fixator 240 and the balloon 220, and an operator can inflate the balloon 220 by operating the control device 230, wherein the inflation amount is determined according to the type and size of the blood vessel. As shown in fig. 7, 8 and 9, the balloon is in a changed state of being contracted, semi-expanded and fully expanded. When filled with a certain amount of gas, the balloon 220 has the same use effect as a guide head made of a hard material. When the delivery device is withdrawn after the introduction of the artificial blood vessel into the autologous blood vessel is completed, the gas in the balloon 220 is discharged to substantially reduce the volume of the balloon 220, thereby enabling the delivery device to be easily withdrawn.
While embodiments of the invention have been disclosed above, it is not intended to be limited to the uses set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. It is therefore intended that the invention not be limited to the exact details and illustrations described and illustrated herein, but fall within the scope of the appended claims and equivalents thereof.
Claims (9)
1. A suture-free vascular prosthesis, comprising: a connecting tube, comprising:
the middle section of the connecting pipe main body is cylindrical, the two ends of the connecting pipe main body form a tapered cone, and the outer diameter of the middle section is smaller than that of the two ends of the connecting pipe main body, so that a neck structure is formed;
the anastomat is matched with the connecting pipe for use, the diameter of the anastomat can be adjusted, one side of the anastomat is provided with a limiting protruding part, and the diameter of various ferrules can be set by presetting a clamping position through the limiting protruding part;
the artificial blood vessel body is connected with the connecting pipe, and a coating piece which is coaxially and seamlessly connected with the artificial blood vessel body is arranged on the outer side of the artificial blood vessel body.
2. The suturing-free artificial blood vessel of claim 1, wherein the connection tube further comprises a protective layer surrounding the outer periphery of the neck portion of the connection tube main body.
3. The suturing-free artificial blood vessel of claim 2, wherein the connecting tube main body is made of a hard material and the protective layer is made of a soft material.
4. The suture-free artificial blood vessel according to claim 3, wherein the stapler comprises:
a belt portion having a plurality of locking teeth formed on an outer surface thereof in a longitudinal direction;
a locking portion provided at one end of the band portion and having an insertion hole through which a free end side of the band portion is inserted;
and a locking claw that is provided inside the insertion opening and selectively locked to the locking tooth.
5. The suture-free artificial blood vessel according to claim 4, wherein the band portion comprises:
a plurality of position-restricting projections which are provided on one side of the band part in the longitudinal direction along the band part, and which form a thin-walled portion at a connecting portion with the band part;
a cushion on the other side of the webbing portion.
6. A suture-free vascular prosthesis delivery device, comprising:
a handle;
a catheter connected to the handle, having a delivery lumen;
a balloon connectively mounted to a first end of said tube and surrounding said tube;
a control device which is connected and installed at the second end of the conduit;
the fixator is a cylinder or a cone, and the diameter size of the fixator is larger than that of the artificial blood vessel.
7. The suture-free artificial vascular delivery device of claim 6, further comprising:
a guide wire disposed within the catheter lumen;
the inflation tube is arranged in the inner cavity of the catheter and is communicated with the inflation bag.
8. The suturing-free artificial blood vessel delivery device according to claim 7, wherein the balloon is capable of passing through the artificial blood vessel before inflation, and is conical or truncated cone-shaped after inflation, and the maximum diameter of the balloon is larger than the diameter of the artificial blood vessel after inflation.
9. The suture-free artificial blood vessel delivery device according to any one of claims 6 to 8, wherein the control device comprises a gas delivery control valve and a guidewire manipulation portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110586361.9A CN113397761A (en) | 2021-05-27 | 2021-05-27 | Suturing-free artificial blood vessel and conveying device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110586361.9A CN113397761A (en) | 2021-05-27 | 2021-05-27 | Suturing-free artificial blood vessel and conveying device thereof |
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| Publication Number | Publication Date |
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| CN113397761A true CN113397761A (en) | 2021-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110586361.9A Pending CN113397761A (en) | 2021-05-27 | 2021-05-27 | Suturing-free artificial blood vessel and conveying device thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114668439A (en) * | 2022-03-17 | 2022-06-28 | 庞晓阳 | Peripheral nerve anastomosis device |
| CN117159219A (en) * | 2023-11-02 | 2023-12-05 | 北京华脉泰科医疗器械股份有限公司 | Vascular prosthesis, vascular prosthesis connecting device and vascular prosthesis connecting system |
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