CN114848065A - Artificial blood vessel anastomosis device - Google Patents
Artificial blood vessel anastomosis device Download PDFInfo
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- CN114848065A CN114848065A CN202210656197.9A CN202210656197A CN114848065A CN 114848065 A CN114848065 A CN 114848065A CN 202210656197 A CN202210656197 A CN 202210656197A CN 114848065 A CN114848065 A CN 114848065A
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- 230000003872 anastomosis Effects 0.000 title claims abstract description 203
- 210000004204 blood vessel Anatomy 0.000 title claims abstract description 114
- 239000002473 artificial blood Substances 0.000 title claims abstract description 63
- 238000001125 extrusion Methods 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 238000004804 winding Methods 0.000 claims description 23
- 230000002792 vascular Effects 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims 3
- 238000007906 compression Methods 0.000 claims 3
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 239000008280 blood Substances 0.000 description 6
- 229920004934 Dacron® Polymers 0.000 description 2
- 230000000916 dilatatory effect Effects 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- -1 Polytetrafluoroethylene Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000002966 stenotic effect Effects 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
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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
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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
-
- 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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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses an artificial blood vessel anastomosis device, which relates to the technical field of artificial blood vessels and comprises an external anastomosis ring, wherein two ends of the artificial blood vessel are respectively inserted inside a self blood vessel, the outer wall of an expansion part of the artificial blood vessel is attached to the inner wall of the self blood vessel, and the external anastomosis ring is sleeved outside the self blood vessel; the external wall of the internal anastomosis ring is attached to the internal wall of the expansion part; the U-shaped anastomosis clamp comprises two linear parts and an arc-shaped part, the U-shaped anastomosis clamp is elastic, an extrusion mechanism used for adjusting the distance between the two linear parts is arranged on the inner side of the U-shaped anastomosis clamp, and the U-shaped anastomosis clamp controls the outer anastomosis ring and the inner anastomosis ring to be anastomotic with the autologous blood vessel and the expansion part respectively. The invention can simultaneously connect the two ends of the artificial blood vessel with the autologous blood vessel in an anastomotic way, has quick anastomosis operation process, low operation difficulty, more convenient operation for medical staff, high stability after the blood vessel anastomosis and good anastomosis effect.
Description
Technical Field
The invention relates to the technical field of artificial blood vessels, in particular to an artificial blood vessel anastomosis device.
Background
The artificial blood vessel is a substitute for a plurality of severely stenotic or occlusive blood vessels, is mainly manufactured by synthetic materials such as nylon, Dacron (Dacron), Polytetrafluoroethylene (PTFE) and the like, is suitable for blood vessel circumfluence of all parts of the whole body, and has satisfactory effect when being applied to clinic. When the artificial blood vessel is anastomosed with the autologous blood vessel, an anastomosis device is used for anastomosis.
Through retrieval, chinese patent No. CN 112274203 a discloses an artificial blood vessel anastomosis device for anastomosing a self-blood vessel and an artificial blood vessel to form an anastomosis surface between the self-blood vessel and the artificial blood vessel, which comprises a handle, a push rod, an artificial blood vessel gasket, a self-locking needle and a needle latch, wherein the needle end of the self-locking needle is pushed out from the 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 end of the self-locking needle is manually or by other means to pass back to the self-blood vessel and the artificial blood vessel and enter the needle latch on the artificial blood vessel gasket to complete locking.
The prior art anastomotic device has the following disadvantages when in use: the anastomosis device utilizes the handle to carry out butt joint anastomosis on the artificial blood vessel and the autologous blood vessel, and utilizes the self-locking needle and the lock catch to carry out anastomosis on the artificial blood vessel and the autologous blood vessel, the anastomosis device not only has great control operation difficulty on the self-locking needle, but also cannot respectively carry out anastomosis on two ends of the artificial blood vessel and the autologous blood vessel, so that a great deal of inconvenience exists in practical use, and the invention provides the artificial blood vessel anastomosis device.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides an artificial blood vessel anastomosis device.
In order to achieve the purpose, the invention adopts the following technical scheme:
an artificial blood vessel anastomosis device comprises an external anastomosis ring, wherein two ends of an artificial blood vessel are respectively inserted inside a self blood vessel, the outer wall of an expansion part of the artificial blood vessel is attached to the inner wall of the self blood vessel, and the external anastomosis ring is sleeved outside the self blood vessel;
the external wall of the internal anastomosis ring is attached to the internal wall of the expansion part;
the U-shaped anastomosis clamp comprises two linear parts and an arc-shaped part, the U-shaped anastomosis clamp is elastic, a squeezing mechanism for adjusting the distance between the two linear parts is arranged on the inner side of the U-shaped anastomosis clamp, and the U-shaped anastomosis clamp is used for respectively controlling the outer anastomosis ring and the inner anastomosis ring to be anastomotic with the autologous blood vessel and the expansion part;
and one end of the puncture piece is fixed with the outer anastomosis ring, when the self blood vessel and the artificial blood vessel are anastomosed, the U-shaped anastomosis clamp applies extrusion pressure to the outer anastomosis ring and the inner anastomosis ring to enable the other end of the puncture piece to sequentially penetrate through the self blood vessel and the expansion part of the artificial blood vessel and be inserted into the inner anastomosis ring, so that the outer anastomosis ring and the inner anastomosis ring are connected into a whole through the puncture piece.
Further, extrusion mechanism includes the wire winding pipe, the tensioning rope, the go-between, the one end of tensioning rope is passed through the go-between and is coincided the interior wall connection who presss from both sides with the U type, and the interval between two straight line portions that the U type was coincided to the drawing tensioning rope regulation clamp, and the control is outer to coincide with interior ring of coincideing and is coincided to autologous blood vessel and expansion portion extrusion respectively, and the other end of tensioning rope is fixed around establishing on the wire winding pipe to keep the tensile force.
Furthermore, the connecting ring comprises a first ring body and a second ring body, wherein the first ring body is fixed on one linear part of the U-shaped anastomosis clamp and is close to one side of the outer anastomosis ring;
the tensioning rope comprises a rope body I and a rope body II, the rope body I is connected with two ring bodies I respectively, the rope body II is connected with two ring bodies II respectively, one end of the rope body I, close to the rope winding pipe, of the rope body II is combined into a main rope, and the main rope is fixed on the rope winding pipe in a winding mode.
Further, the wiring pipe includes the body, the one end of body is installed on the identical arc portion that presss from both sides of U type, and the other end is fixed with the stopper, and all has seted up a plurality of wiring grooves on body and the stopper, and the tensioning rope is fixed on the body through wiring groove around establishing.
Further, the puncture piece includes the body of rod, the top of the body of rod is fixed with the inner wall that the outer anastomosis closed the ring, and the bottom is equipped with the puncture head, runs through autologous blood vessel and artificial blood vessel's expansion portion in proper order through the puncture head to and establish in the anastomose in close the ring, the jack has been seted up on the interior anastomosis closed ring, the bottom of the body of rod is fixed with contrary retaining ring, contrary retaining ring has elasticity, contrary retaining ring extends to the jack downside, carries on spacingly to the body of rod.
Furthermore, the inner wall of the outer anastomosis ring and the inner wall of the inner anastomosis ring are both fixed with extrusion rings, and when the outer anastomosis ring and the inner anastomosis ring are used for anastomosis of the dilated portions of the autologous blood vessel and the artificial blood vessel, the extrusion rings increase anastomosis stability through extrusion.
Furthermore, the side surface of the outer anastomosis ring and the side surface of the inner anastomosis ring are both provided with slots corresponding to the U-shaped anastomosis clamp, and the straight line part of the U-shaped anastomosis clamp is movably inserted in the slots and detachably connected with the outer anastomosis ring and the inner anastomosis ring through the slots.
Compared with the prior art, the invention has the beneficial effects that:
1. the anastomosis device can respectively connect the two ends of the artificial blood vessel with the autologous blood vessel in an anastomosis way, realizes the anastomosis of the expansion part of the artificial blood vessel and the autologous blood vessel by utilizing the mutual matching of the external anastomosis ring and the internal anastomosis ring, and connects the external anastomosis ring, the internal anastomosis ring and the expansion part of the artificial blood vessel and the autologous blood vessel into a whole by virtue of the puncture piece, so that the anastomosis effect is stable.
2. According to the invention, the outer anastomosis ring and the inner anastomosis ring are mutually extruded through the U-shaped anastomosis clamp and are connected into a whole through the puncture piece, so that the operation process is fast, the operation difficulty is low, and the operation of medical personnel is more convenient.
3. According to the U-shaped anastomosis clamp, the straight line part of the U-shaped anastomosis clamp is controlled to clamp the outer anastomosis ring and the inner anastomosis ring by utilizing the tensioning action of the tensioning rope, and the tensioning rope can be wound and fixed on the rope winding pipe, so that the external anastomosis ring and the inner anastomosis ring are stably extruded, and the outer anastomosis ring and the inner anastomosis ring are more conveniently anastomosed with an artificial blood vessel and an autologous blood vessel through a puncture piece.
In conclusion, the invention can simultaneously connect the two ends of the artificial blood vessel with the autologous blood vessel in an anastomotic way, has the advantages of rapid anastomosis operation process, low operation difficulty, more convenient operation for medical staff, high stability after the blood vessel anastomosis and good anastomosis effect.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a schematic overall structure diagram of an artificial vascular anastomosis device according to the present invention;
FIG. 2 is a schematic view illustrating the anastomosis of an autologous blood vessel and an artificial blood vessel according to the present invention;
FIG. 3 is a schematic cross-sectional view of FIG. 2;
FIG. 4 is a schematic view of the outer anastomosis ring and the inner anastomosis ring joined by the piercing member and the U-shaped anastomosis clip;
FIG. 5 is a schematic view of the connection ring and the tension cord to the inner wall of the U-shaped anastomosis clamp;
FIG. 6 is a schematic view of the piercing member;
FIG. 7 is a schematic view of the structure of the rope winding pipe;
fig. 8 is an enlarged view of a portion a of fig. 3.
In the figure: 1 autologous blood vessel, 2 artificial blood vessels, 3 expansion parts, 4 external anastomosis rings, 5U-shaped anastomosis clamps, 6 internal anastomosis rings, 7 puncture elements, 8 rope winding tubes, 9 tensioning ropes, 10 connecting rings, 11 extrusion rings, 12 slots, 71 rod bodies, 72 puncture heads, 73 anti-stop rings, 81 tube bodies, 82 rope winding grooves, 83 limiting blocks, 91 rope bodies I, 92 rope bodies II, 101 ring bodies I and 102 ring bodies II.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention;
referring to fig. 1-8, an artificial blood vessel anastomosis device comprises an external anastomosis ring 4, wherein two ends of an artificial blood vessel 2 are respectively inserted into the inner side of a self-body blood vessel 1, the outer wall of an expansion part 3 of the artificial blood vessel 2 is attached to the inner wall of the self-body blood vessel 1, and the external anastomosis ring 4 is sleeved on the outer side of the self-body blood vessel 1;
the anastomotic device also comprises an inner anastomotic ring 6, the inner anastomotic ring 6 is sleeved outside the artificial blood vessel 2, and the outer wall of the inner anastomotic ring 6 is attached to the inner wall of the expansion part 3;
as shown in fig. 2 and 3, an external anastomosis ring 4 and an internal anastomosis ring 6 are provided at the anastomoses of the dilating portion 3 of the artificial blood vessel 2 and the self-blood vessel 1, and the external anastomosis ring 4 and the internal anastomosis ring 6 are matched with each other to perform anastomosis treatment of the dilating portion 3 and the self-blood vessel 1.
The anastomosis device also comprises a U-shaped anastomosis clamp 5, the U-shaped anastomosis clamp 5 comprises two linear parts and an arc part, the U-shaped anastomosis clamp 5 has elasticity, a squeezing mechanism for adjusting the distance between the two linear parts is arranged on the inner side of the U-shaped anastomosis clamp 5, and the U-shaped anastomosis clamp 5 is used for respectively controlling an outer anastomosis ring 4 and an inner anastomosis ring 6 to be anastomotic with the autologous blood vessel 1 and the expansion part 3;
the anastomotic device further comprises a puncture member 7, one end of the puncture member 7 is fixed with the outer anastomotic ring 4, when the self-body blood vessel 1 and the artificial blood vessel 2 are anastomosed, the U-shaped anastomotic clamp 5 applies extrusion force to the outer anastomotic ring 4 and the inner anastomotic ring 6 to enable the other end of the puncture member 7 to sequentially penetrate through the self-body blood vessel 1 and the expansion part 3 of the artificial blood vessel 2 and be inserted on the inner anastomotic ring 6, so that the outer anastomotic ring 4 and the inner anastomotic ring 6 are connected into a whole through the puncture member 7.
In this embodiment, extrusion mechanism includes rope winding pipe 8, tensioning rope 9, go-between 10, the one end of tensioning rope 9 is passed through go-between 10 and the anastomotic inner wall connection who presss from both sides 5 of U type, the interval between two sharp portions that the identical clamp 5 of U type was adjusted to pulling tensioning rope 9, control outer anastomotic ring 4 and interior anastomotic ring 6 extrude respectively autologous blood vessel 1 and expansion part 3 anastomoses, the other end of tensioning rope 9 is fixed around establishing on rope winding pipe 8 to keep the tensile force.
In this embodiment, the connection ring 10 includes two ring bodies i 101 and two ring bodies ii 102, wherein one ring body i 101 is fixed on one of the linear portions of the U-shaped anastomosis clip 5 and is close to one side of the outer anastomosis ring 4, the other ring body i 101 is fixed on the other linear portion of the U-shaped anastomosis clip 5 and is far from one side of the inner anastomosis ring 6, one ring body ii 102 is fixed on one of the linear portions of the U-shaped anastomosis clip 5 and is far from one side of the outer anastomosis ring 4, and the other ring body ii 102 is fixed on the other linear portion of the U-shaped anastomosis clip 5 and is close to one side of the inner anastomosis ring 6;
the tensioning rope 9 comprises a first rope body 91 and a second rope body 92, the first rope body 91 is connected with the first two ring bodies 101 respectively, the second rope body 92 is connected with the second two ring bodies 102 respectively, one ends of the first rope body 91 and the second rope body 92 close to the rope winding pipe 8 are combined into a main rope, and the main rope is wound and arranged on the rope winding pipe 8.
In this embodiment, the rope winding pipe 8 includes body 81, and the one end of body 81 is installed in the anastomotic arc portion that presss from both sides 5 of U type, and the other end is fixed with stopper 83, and has all seted up a plurality of rope winding grooves 82 on body 81 and the stopper 83, and tensioning rope 9 is fixed on body 81 through rope winding groove 82 around establishing, and tensioning rope 9 can keep the identical tensioning dynamics that presss from both sides 5 to the U type around establishing fixed back.
In this embodiment, the puncture member 7 includes the body of rod 71, and the top of the body of rod 71 is fixed with the inner wall of outer anastomosis ring 4, and the bottom is equipped with puncture head 72, runs through the expansion portion 3 of autologous blood vessel 1 and artificial blood vessel 2 in proper order through puncture head 72, and insert and establish on interior anastomosis ring 6, has seted up the jack on the interior anastomosis ring 6, and the bottom of the body of rod 71 is fixed with contrary ring 73 that ends, and contrary ring 73 that ends has elasticity, and contrary ring 73 that ends extends to the jack downside, carries on spacingly to the body of rod 71.
The outer anastomosis ring 4 and the inner anastomosis ring 6 move to the anastomosis position of the expansion part 3 of the self blood vessel 1 and the artificial blood vessel 2, the tensioning rope 9 is pulled to control the two straight line parts of the U-shaped anastomosis clamp 5 to be close to each other, so that extrusion force is formed between the outer anastomosis ring 4 and the inner anastomosis ring 6, the extrusion force prompts the puncture head 72 of the puncture piece 7 to puncture the self blood vessel 1 and the expansion part 3, and finally the puncture head extends to the inner side of the inner anastomosis ring 6 through the jack, the reverse stop ring 73 moves along with the rod body 71 and the puncture head 72, when the self blood vessel 1 and the expansion part 3 are punctured and enter the jack, the reverse stop ring 73 is stressed and compressed, when the reverse stop ring 73 is separated from the jack, the reverse stop ring 73 can be opened, the puncture piece 7 is integrally limited, and the outer anastomosis ring 4, the inner anastomosis ring 6, the blood vessel 1 and the artificial blood vessel 2 can be connected into a whole to realize anastomosis through the puncture piece 7.
In this embodiment, the inner walls of the outer anastomosis ring 4 and the inner anastomosis ring 6 are both fixed with the squeezing rings 11, and when the outer anastomosis ring 4 and the inner anastomosis ring 6 are used for anastomosis of the dilated portions 3 of the autologous blood vessel 1 and the artificial blood vessel 2, the squeezing rings 11 increase anastomosis stability through squeezing.
The U-shaped anastomosis clamp 5, the outer anastomosis ring 4 and the inner anastomosis ring 6 can be fixed or detachably connected, in this embodiment, a detachable connection mode is adopted, slots 12 corresponding to the U-shaped anastomosis clamp 5 are respectively formed in the side surface of the outer anastomosis ring 4 and the side surface of the inner anastomosis ring 6, and the straight line part of the U-shaped anastomosis clamp 5 is movably inserted in the slots 12 and detachably connected with the outer anastomosis ring 4 and the inner anastomosis ring 6 through the slots 12. The U-shaped anastomosis clamp 5 is used for extruding the outer anastomosis ring 4 and the inner anastomosis ring 6 for a plurality of times, so that a plurality of puncture pieces 7 respectively puncture and fix the expansion parts 3 of the autologous blood vessel 1 and the artificial blood vessel 2, and finally, anastomosis treatment is realized.
Claims (7)
1. An artificial blood vessel anastomosis device comprises an external anastomosis ring (4), and is characterized in that two ends of an artificial blood vessel (2) are respectively inserted into the inner side of a self-body blood vessel (1), the outer wall of an expansion part (3) of the artificial blood vessel (2) is attached to the inner wall of the self-body blood vessel (1), and the external anastomosis ring (4) is sleeved on the outer side of the self-body blood vessel (1);
the artificial blood vessel further comprises an inner anastomosis ring (6), the inner anastomosis ring (6) is sleeved on the outer side of the artificial blood vessel (2), and the outer wall of the inner anastomosis ring (6) is attached to the inner wall of the expansion part (3);
the U-shaped anastomosis clamp (5) comprises two linear parts and an arc-shaped part, the U-shaped anastomosis clamp (5) has elasticity, a squeezing mechanism for adjusting the distance between the two linear parts is arranged on the inner side of the U-shaped anastomosis clamp, and the U-shaped anastomosis clamp (5) is used for respectively controlling the outer anastomosis ring (4) and the inner anastomosis ring (6) to be anastomosed with the autologous blood vessel (1) and the expansion part (3);
puncture piece (7), puncture piece (7) one end is fixed with outer anastomosis ring (4), and when anastomosing autologous blood vessel (1) and artificial blood vessel (2), U type anastomosis clamp (5) apply the extrusion force to outer anastomosis ring (4) and interior anastomosis ring (6) and make the other end of puncture piece (7) run through expansion portion (3) of autologous blood vessel (1) and artificial blood vessel (2) in proper order, and establish on interior anastomosis ring (6), make outer anastomosis ring (4) and interior anastomosis ring (6) connect as an organic wholely through puncture piece (7).
2. The artificial blood vessel anastomosis device according to claim 1, wherein the extrusion mechanism comprises a rope winding tube (8), a tension rope (9) and a connecting ring (10), one end of the tension rope (9) is connected with the inner wall of the U-shaped anastomosis clamp (5) through the connecting ring (10), the tension rope (9) is pulled to adjust the distance between two linear portions of the U-shaped anastomosis clamp (5), the outer anastomosis ring (4) and the inner anastomosis ring (6) are controlled to respectively extrude and anastomosis of the autologous blood vessel (1) and the expansion portion (3), and the other end of the tension rope (9) is wound on the rope winding tube (8) to be fixed so as to maintain the tension force.
3. An artificial blood vessel anastomosis device according to claim 2, wherein said connection ring (10) comprises two first ring members (101) and two second ring members (102), one of said first ring members (101) being secured to one of the rectilinear portions of the U-shaped anastomosis clamp (5) and being adjacent to one side of the outer anastomosis ring (4), the other one of said first ring members (101) being secured to the other rectilinear portion of the U-shaped anastomosis clamp (5) and being distal to one side of the inner anastomosis ring (6), one of said second ring members (102) being secured to one of the rectilinear portions of the U-shaped anastomosis clamp (5) and being distal to one side of the outer anastomosis ring (4), and the other one of said second ring members (102) being secured to the other rectilinear portion of the U-shaped anastomosis clamp (5) and being adjacent to one side of the inner anastomosis ring (6);
tensioning rope (9) are including a rope body (91) and a rope body two (92), two ring body (101) are connected respectively to rope body one (91), two ring body two (102) are connected respectively to rope body two (92), and rope body one (91) and rope body two (92) are close to the one end of rope winding pipe (8) and merge into a main rope, and main rope is fixed on rope winding pipe (8) around establishing.
4. The artificial blood vessel anastomosis device according to claim 3, wherein the rope winding tube (8) comprises a tube body (81), one end of the tube body (81) is mounted on the arc-shaped portion of the U-shaped anastomosis clamp (5), the other end of the tube body is fixed with a limiting block (83), a plurality of rope winding grooves (82) are formed in the tube body (81) and the limiting block (83), and the tensioning rope (9) is wound and fixed on the tube body (81) through the rope winding grooves (82).
5. The artificial blood vessel anastomosis device according to claim 1, wherein the puncture member (7) comprises a rod body (71), the top of the rod body (71) is fixed to the inner wall of the outer anastomosis ring (4), the bottom of the rod body is provided with a puncture head (72), the puncture head (72) sequentially penetrates through the autologous blood vessel (1) and the expansion part (3) of the artificial blood vessel (2) and is inserted into the inner anastomosis ring (6), a socket is formed in the inner anastomosis ring (6), a reverse stop ring (73) is fixed to the bottom of the rod body (71), the reverse stop ring (73) has elasticity, and the reverse stop ring (73) extends to the lower side of the socket to limit the rod body (71).
6. An artificial vascular anastomosis device according to claim 1 or 5, characterised in that said external anastomosis ring (4) and said internal anastomosis ring (6) have compression rings (11) affixed to their inner walls, said compression rings (11) providing increased anastomosis stability by compression when said external anastomosis ring (4) and said internal anastomosis ring (6) are anastomosed between the native vessel (1) and the expanded portion (3) of the artificial vessel (2).
7. The artificial blood vessel anastomosis device according to claim 1, wherein the lateral surface of the outer anastomosis ring (4) and the lateral surface of the inner anastomosis ring (6) are both provided with a slot (12) corresponding to the U-shaped anastomosis clip (5), and the linear portion of the U-shaped anastomosis clip (5) is movably inserted into the slot (12) and detachably connected with the outer anastomosis ring (4) and the inner anastomosis ring (6) through the slot (12).
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CN118383822A (en) * | 2024-06-28 | 2024-07-26 | 泓欣科创生物科技(北京)有限公司 | Vascular anastomosis assembly |
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