CN217908584U - Anti-winding capture system in placement operation of aortic stent with branch - Google Patents
Anti-winding capture system in placement operation of aortic stent with branch Download PDFInfo
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- CN217908584U CN217908584U CN202220407218.9U CN202220407218U CN217908584U CN 217908584 U CN217908584 U CN 217908584U CN 202220407218 U CN202220407218 U CN 202220407218U CN 217908584 U CN217908584 U CN 217908584U
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Abstract
The utility model discloses an antiwind system of arresting in art is placed to area branch aorta support, including flexible double lumen pipe subassembly, flexible double lumen pipe subassembly includes outer sheath pipe, and outer sheath intraductal being fixed with along first inner tube and the second inner tube of its axis setting, first inner tube and second inner tube set up side by side and each other do not switch on. A first cavity is arranged in the first inner tube, a first guide wire can be arranged in the first cavity in a penetrating mode from the near end, and the far end of the first inner tube extends out of the far end of the outer sheath tube and is provided with a bent portion. A second cavity is arranged in the second inner tube, a capture device is arranged in the second cavity, and the capture device can move along the axial direction of the second inner tube. Can regard as a whole leading-in blood vessel, two seal wires are led into respectively to first inner chamber of rethread and second inner chamber, guarantee that the seal wire can not twine, have reduced the operation degree of difficulty, make the operation simpler, reduce operation time, reduce the operation risk.
Description
Technical Field
The utility model relates to the technical field of medical equipment, especially, relate to take antiwind system of arresting in branch's aorta support placing operation.
Background
Aortic dissection is a major aortic lesion that seriously threatens the life safety of patients, and if not treated in time, the aortic dissection may rupture, leading to death. Meanwhile, aortic dissection can cause branch artery ischemia, and organ ischemia such as brain, spinal cord, heart, liver and kidney, limbs and the like occurs, and serious complications such as cerebral infarction, paraplegia, acute liver and kidney function injury, lower limb dysfunction and the like occur. Aortic dissection therefore requires emergency surgical treatment. In recent years, with the development of minimally invasive interventional therapy technology, the application of the endovascular stent-graft isolation for treating aortic diseases is wide, and the surgical method has the advantages of small wound, less bleeding, short treatment time, good curative effect, repeatability treatment and the like which are incomparable with the traditional surgical methods.
The operation of delivering the branched aortic artificial stent into the aorta is as follows: firstly, brachial artery puncture, leading a loach guide wire and a guide catheter into an aorta through the brachial artery, finally leading out the loach guide wire from the femoral artery, drawing out the loach guide wire, and keeping the guide catheter in the body. Then, introducing the superhard guidewire into the aorta; a branch guidewire is advanced from the femoral artery up the catheter to the brachial artery. Then, the artificial stent is sent into the aorta through a conveying system, and after the position is adjusted, the soft sheath is released; and (3) feeding the branch stent into the branch artery through the branch guide wire. Finally, the aortic and branch stents are released and the delivery system is withdrawn. However, the branch guide wire and the superhard guide wire enter the aorta from the upper end and the lower end respectively, so that the branch guide wire and the superhard guide wire are wound, and therefore, before the artificial stent is introduced, a great amount of time is needed for unwinding the branch guide wire and the superhard guide wire so as to introduce the branch arterial stent.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects, the utility model aims to provide a system is arrested in antiwind of taking branch's aorta support to place art can be as a whole leading-in blood vessel, and two seal wires are led into respectively to first inner chamber of rethread and second inner chamber, guarantee that the seal wire can not twine, have reduced the operation degree of difficulty, make the operation simpler, reduce operation time, reduce the operation risk.
In order to achieve the above purpose, the utility model adopts the technical scheme that: anti-winding system of arresting in operation is placed to area branch aorta support, its characterized in that: the flexible double-cavity tube assembly comprises an outer sheath tube, wherein a first inner tube and a second inner tube which are arranged along the axis of the outer sheath tube are fixed in the outer sheath tube, the first inner tube and the second inner tube are arranged side by side and are not communicated with each other, a first cavity is arranged in the first inner tube, a first guide wire can penetrate through the first cavity from the near end, and the far end of the first inner tube extends out of the far end of the outer sheath tube and is provided with a bent head part; and a second cavity is arranged in the second inner tube, a catcher is arranged in the second cavity, and the catcher can move along the axial direction of the second inner tube.
The beneficial effects of the utility model reside in that: the flexible double-cavity pipe assembly can be led into a main artery as a whole, but the flexible double-cavity pipe assembly is also provided with a first cavity and a second cavity which are parallel in the axial direction, the first cavity can guide one guide wire into the main artery, a capture device is arranged in the second cavity, the capture device can extend out of the second cavity to capture the other guide wire, and the captured guide wire is led into the second cavity. The flexible double-cavity tube assembly can be guided into the two guide wires rapidly, and the two guide wires cannot be wound, so that the operation difficulty is reduced, the operation is simpler, the operation time is shortened, and the operation risk is reduced.
Furthermore, the elbow part can be in a bending state under the action of self elasticity and is straightened under the action of the first guide wire, and a plurality of side holes communicated with the first cavity are formed in the side wall of the elbow part. The structure of elbow reduces the damage to the vascular wall, and sets up the side opening, and the contrast medium in with first cavity is leading-in the blood vessel through the side opening, is convenient for observe in the art.
Furthermore, the proximal end of the second inner tube extends out of the sheath tube and is connected with a Y-shaped valve, and the Y-shaped valve has a hemostatic effect.
Further, the capturing device comprises a pushing rod and a capturing end which are fixedly connected, the capturing end is arranged on one side of the far end close to the second inner tube, and the pushing rod is fixedly connected with the Y-shaped valve. The handheld pushing rod pushes the capturing device to axially move along the second cavity, and the capturing end can rapidly capture the guide wire outside the flexible double-cavity tube assembly and pull the captured guide wire into the second cavity.
Further, the distal end of second inner tube extends out the sheath pipe, just the distal end tip of second inner tube is provided with transition portion, transition portion is the bevel connection that forms at second inner tube tip, the bevel connection is kept away from first inner tube one side towards near-end slope from being close to first inner tube one side. The blood vessel wall is effectively protected to the bevel connection, avoids the second inner tube to cause the blood vessel wall damage because the closed angle at the removal in-process.
Further, the first inner pipe is of a tubular structure made of three layers of materials and comprises a polytetrafluoroethylene layer, a metal layer and a polyurethane pipe layer which are sequentially sleeved from inside to outside, wherein the metal layer is formed by winding and weaving metal wires.
Furthermore, the outer wall of the distal end of the outer sheath tube is provided with a developing mark point, the developing mark point can be displayed under X-ray, and the distal end of the outer sheath tube can be accurately moved to a focus position in an operation.
Further, the diameter of the first cavity is 1.5-3mm, and the diameter of the second cavity is 0.508-1.016mm.
Drawings
Fig. 1 is a schematic view of an embodiment of the present invention;
fig. 2 is a cross-sectional view of an embodiment of the present invention;
FIG. 3 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1
FIG. 4 is an enlarged view taken at A in FIG. 2;
FIG. 5 is a schematic view of a second inner tube according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a state of the capture system leading into the aorta according to an embodiment of the present invention.
In the figure:
1. an outer sheath tube; 2. a first inner tube; 21. a first cavity; 22. a bent portion; 221. side holes; 3. a second inner tube; 31. a second cavity; 32. bevel connection; 4. a first guide wire; 5. a catcher; 51. a push rod; 52. Catching ends; 6. a Y-shaped valve; 7. and developing the mark points.
Detailed Description
The following description of the preferred embodiments of the present invention will be provided with reference to the accompanying drawings, so that the advantages and features of the present invention can be easily understood by those skilled in the art, and the scope of the present invention can be clearly and clearly defined.
For ease of description, the following description uses the terms "proximal" and "distal", where "proximal" refers to the end near the operative end and "distal" refers to the end distal to the operative end that enters the body.
Referring to fig. 1, in one embodiment, the anti-wind capture system for aortic stent placement with bifurcation of the present invention comprises a flexible double lumen tubing assembly. Referring to fig. 3, the flexible dual lumen tube assembly comprises an outer sheath tube 1, a first inner tube 2 and a second inner tube 3 fixed in the outer sheath tube 1 along the axis thereof, the first inner tube 2 and the second inner tube 3 being arranged side by side and not communicated with each other. During processing, can process out first inner tube 2 and second inner tube 3 earlier, with first inner tube 2 and second inner tube 3 and discharge the back, the sheath pipe 1 is formed in the outer cladding of first inner tube 2 and second inner tube 3 to rethread extrusion molding technology, has formed the flexible double-chamber pipe subassembly of an organic whole structure promptly. Or the first inner tube 2 and the second inner tube 3 can be inserted into the sheath tube 1, and then the first inner tube 2 and the second inner tube 3 are bonded in the sheath tube 1 by glue. The sheath tube 1 is made of medical plastics such as conventional polyether block polyamide, polyethylene, polyurethane, polyether ether ketone, polypropylene and the like, has the hardness of 30-70D, is high pressure resistant, and can be used in blood vessels without deformation caused by pressure extrusion of blood in an aorta.
Referring to fig. 2, the first inner tube 2 defines a first cavity 21, and the diameter of the first cavity 21 is 0.508-1.016mm. Both the distal and proximal ends of the first inner tube 2 extend out of the outer sheath 1. The distal end of the first inner tube 2 is provided with a bent part 22, and the bent part 22 can be in a bent state under the action of self elasticity and can be straightened under the action of external force. The elbow part 22 is in a pig tail shape, namely the first inner tube 2 is a pig tail type conduit. A plurality of side holes 221 communicated with the first cavity 21 are formed in the side wall of the elbow part 22, and the side holes 221 are formed in the inner wall of the elbow part 22 in a bending state. A luer connector is fixed to the proximal end of the first inner tube 2 through the outer sheath tube 1.
The first guide wire 4 can be inserted into the first cavity 21, the first guide wire 4 is inserted from the proximal end of the first inner tube 2, and the flexible double-cavity tube component is guided to be guided into the aorta from the brachial artery. After the first guide wire 4 is withdrawn, the elbow part 22 is restored to the pig tail shape due to the elasticity of the elbow part, contrast liquid can be injected into the first cavity 21, and the contrast liquid is discharged through the side hole 221 and is limited in the circle of the elbow part 22, so that contrast is realized. And then the superhard guide wire is led in from the near end of the first inner tube 2, namely the superhard guide wire is led in.
Referring to fig. 4, the second inner tube 3 defines a second cavity 31, and the diameter of the second cavity 31 is 1.5-3mm. And the far end and the near end of the second inner tube 3 also extend out of the outer sheath tube 1, a catcher 5 is arranged in the second cavity 31, and the catcher 5 can move along the axial direction of the second cavity 31. The capturing device 5 comprises a pushing rod 51 and a capturing end 52, the capturing end 52 is close to the far end of the second cavity 31, the capturing end 52 is a capturing ferrule with a shape memory function, and the pushing rod 51 and the capturing end are made of nickel-titanium alloy uniformly. The capture end 52 is retracted within the second lumen 31 in an initial state, in a collapsed state.
Referring to fig. 1, a Y-valve 6 is fixed to the proximal end of the second inner tube 3, and the end of the push rod 51 remote from the catching end 52 is locked to the Y-valve 6. After the whole flexible double-lumen tube assembly reaches the position, the catcher 5 is pushed to move axially along the second cavity 31, the catching end 52 is pushed to extend out of the second inner tube 3, the catching end 52 catches the branch guide wire positioned in the branch tube, and then the catcher 5 is pulled to pull the branch guide wire into the first cavity 21, so that the guide of the branch guide wire is realized.
In another embodiment, to reduce damage to the vessel, the distal end of the second inner tube 3 is provided with a transition, shown in fig. 4 and 5, which is a beveled mouth 32 formed at the end of the second inner tube 3. The bevel 32 inclines from the side close to the first inner tube 2 to the side far from the first inner tube 2 towards the near end, and the low point of the bevel 32 is abutted with the far end of the outer sheath tube 1, so as to facilitate the operation. When the second inner tube 3 moves along the aorta, the end portion of the second inner tube 3 is likely to damage the blood vessel wall of the aorta if it has a flat structure. However, the bevel 32 structure does not damage the vessel wall by sharp corners when the second inner tube 3 moves, particularly at the curved portion of the aorta, and improves safety.
The first inner tube 2 is a braided catheter, the first inner tube 2 is a tubular structure made of three layers of materials and comprises a polytetrafluoroethylene layer, a metal layer and a polyurethane tube layer which are sequentially sleeved from inside to outside, and the metal layer is formed by winding and braiding metal wires. The second inner tube 3 is made of medical plastics such as conventional polyether block polyamide, polyethylene, polyurethane, polyether ether ketone, polypropylene and the like.
In one embodiment, in order to facilitate observing the position of the outer sheath tube 1 in the aorta, the outer wall of the distal end of the outer sheath tube 1 is provided with a developing marker point 7, and the developing marker point 7 is opaque to X-rays and can be checked through the X-rays to accurately convey the outer sheath tube to the focus position.
Referring to fig. 6, in order to schematically show the state of the aorta introduced by the capture system, the capture system of the present embodiment is operated as follows: the brachial artery and the femoral artery are punctured, a first guide wire 4 is led into the first inner tube 2, and a flexible double-lumen tube component in an integrated structure is led into the brachial artery. The catch 5 is now built into the second inner tube 3. When the development marking point 7 reaches the lesion position, the first guide wire 4 is drawn out, and the superhard guide wire is guided into the first inner tube 2. And then guiding the branch guide wire into the femoral artery, pushing the catcher 5 in the second inner tube 3 near the position of the arrival double-lumen tube assembly, extending the catching end 52 out of the second inner tube 3, catching the branch guide wire, and pulling the branch guide wire into the second inner tube 3 after catching the branch guide wire. At the moment, the superhard guide wire and the branch guide wire are respectively positioned in two parallel cavities and exit from the flexible double-cavity tube assembly, the superhard guide wire and the branch guide wire cannot be wound, and then the superhard guide wire and the branch guide wire are led into the support. The winding phenomenon can not occur to the superhard guide wire and the branch guide wire in the process, the operation difficulty is reduced, the operation is simpler, the operation time is reduced, and the operation risk is reduced.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.
Claims (8)
1. Anti-winding capture system in operation is placed to area branch aorta support, its characterized in that: including flexible double-lumen pipe subassembly, flexible double-lumen pipe subassembly includes outer sheath pipe, first inner tube and second inner tube that its axis set up are followed to the intraductal first inner tube and the second inner tube that is fixed with of outer sheath, and first inner tube and second inner tube set up side by side and do not switch on each other, wherein
A first cavity is arranged in the first inner tube, a first guide wire can penetrate through the first cavity from the near end, and the far end of the first inner tube extends out of the far end of the outer sheath tube and is provided with a bent part;
and a second cavity is arranged in the second inner pipe, a catcher is arranged in the second cavity, and the catcher can move along the axial direction of the second inner pipe.
2. The anti-wind capture system in aortic stent placement with bifurcation of claim 1, wherein: the elbow portion can be in the bending state under the effect of self elasticity to lead under the effect of first seal wire and straighten, set up a plurality of side openings that switch on with first cavity on the lateral wall of elbow portion.
3. The anti-wind capture system in aortic stent placement with branch of claim 1, wherein: the proximal end of the second inner tube extends out of the outer sheath tube and is connected with a Y-shaped valve.
4. The anti-wind capture system in aortic stent placement with bifurcation of claim 3, wherein: the capturing device comprises a pushing rod and a capturing end which are fixedly connected, the capturing end is arranged on one side of the far end close to the second inner tube, and the pushing rod is fixedly connected with the Y-shaped valve.
5. The anti-wind capture system in aortic stent placement with bifurcation of claim 1, wherein: the distal end of second inner tube extends out outer sheath pipe, just the distal end tip of second inner tube is provided with transition portion, transition portion is the bevel connection that the tip of tube formed in the second, the bevel connection is kept away from first inner tube one side towards the near-end slope from being close to first inner tube one side.
6. The anti-wind capture system in aortic stent placement with bifurcation of claim 1, wherein: the first inner tube is of a tubular structure made of three layers of materials and comprises a polytetrafluoroethylene layer, a metal layer and a polyurethane tube layer which are sequentially sleeved from inside to outside, wherein the metal layer is formed by winding and weaving metal wires.
7. The anti-wind catching system of aortic stent placement with bifurcation of claims 1-6, wherein: and the outer wall of the far end of the outer sheath tube is provided with a developing mark point.
8. The anti-wind capture system in aortic stent placement with bifurcation of claim 1, wherein: the diameter of the first cavity is 1.5-3mm, and the diameter of the second cavity is 0.508-1.016mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220407218.9U CN217908584U (en) | 2022-02-25 | 2022-02-25 | Anti-winding capture system in placement operation of aortic stent with branch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220407218.9U CN217908584U (en) | 2022-02-25 | 2022-02-25 | Anti-winding capture system in placement operation of aortic stent with branch |
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| Publication Number | Publication Date |
|---|---|
| CN217908584U true CN217908584U (en) | 2022-11-29 |
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ID=84146902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220407218.9U Active CN217908584U (en) | 2022-02-25 | 2022-02-25 | Anti-winding capture system in placement operation of aortic stent with branch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217908584U (en) |
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- 2022-02-25 CN CN202220407218.9U patent/CN217908584U/en active Active
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