CN210447085U - Cross-petal device - Google Patents
Cross-petal device Download PDFInfo
- Publication number
- CN210447085U CN210447085U CN201720639742.8U CN201720639742U CN210447085U CN 210447085 U CN210447085 U CN 210447085U CN 201720639742 U CN201720639742 U CN 201720639742U CN 210447085 U CN210447085 U CN 210447085U
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- China
- Prior art keywords
- valve
- spanning device
- valve spanning
- stride
- rod
- Prior art date
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- 229910001000 nickel titanium Inorganic materials 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 230000006386 memory function Effects 0.000 claims description 3
- 241000446313 Lamella Species 0.000 abstract description 14
- 210000002435 tendon Anatomy 0.000 abstract description 2
- 210000003698 chordae tendineae Anatomy 0.000 description 15
- 210000004115 mitral valve Anatomy 0.000 description 4
- 210000000591 tricuspid valve Anatomy 0.000 description 4
- 210000001765 aortic valve Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000005003 heart tissue Anatomy 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 210000003540 papillary muscle Anatomy 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 208000002330 Congenital Heart Defects Diseases 0.000 description 1
- 206010010356 Congenital anomaly Diseases 0.000 description 1
- 208000035478 Interatrial communication Diseases 0.000 description 1
- 208000001910 Ventricular Heart Septal Defects Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000001746 atrial effect Effects 0.000 description 1
- 208000013914 atrial heart septal defect Diseases 0.000 description 1
- 206010003664 atrial septal defect Diseases 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 210000001715 carotid artery Anatomy 0.000 description 1
- 208000028831 congenital heart disease Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000001105 femoral artery Anatomy 0.000 description 1
- 210000003191 femoral vein Anatomy 0.000 description 1
- 229920005570 flexible polymer Polymers 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 210000002837 heart atrium Anatomy 0.000 description 1
- 210000004731 jugular vein Anatomy 0.000 description 1
- 210000005248 left atrial appendage Anatomy 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 201000003130 ventricular septal defect Diseases 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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- Prostheses (AREA)
Abstract
The utility model discloses a stride lamella ware is disclosed, include to stride lamella ware main part and stride lamella ware pole, stride lamella ware main part and be hollow spatial structure, stride lamella ware pole with stride lamella ware main part and connect. The utility model discloses the valve ware strides that technical scheme provided plays good auxiliary action when the valve is strideed across in the seal wire retrograde motion, has shortened operation time greatly, and is difficult for passing through tendon cable net, has reduced the probability that the complication produced by a wide margin, and to a great extent has improved the security and the treatment of operation, has higher using value.
Description
Technical Field
The utility model relates to the field of medical equipment, especially, relate to a stride lamella ware.
Background
The cardiac intervention operation path is implanted through a catheter, namely, the catheter is sent into an instrument for treatment from a femoral artery, a femoral vein, a carotid artery or a jugular vein and the like, such as atrial septal defect occlusion of congenital heart disease, aortic valve replacement, left atrial appendage occlusion and the like. In recent years, physicians have also studied the path of transapical or transapical puncture, mainly for congenital atrial, ventricular septal defect closure and interventional aortic valve replacement. The two operations have simple access and less adjacent tissues, and adverse events such as chordal winding and the like can not occur.
However, in order to perform intervention treatment of a mitral valve or a tricuspid valve from an apical path or an arterial path, it is difficult to establish a surgical access. The main reason is the complex structure of the mitral and tricuspid valves, including the annulus, leaflets, chordae tendinae, and papillary muscles. Wherein the chordae tendineae are connected with the valve leaflets and papillary muscles and are divided into primary chordae tendineae, secondary chordae tendineae and tertiary chordae tendineae, and the chordae tendineae are distributed in a slender, dense and meshed manner. Interventional devices for treating mitral and tricuspid valves often need to enter the atrium from the ventricle, pass retrograde through the space between the leaflets (i.e., the orifice), and fail to pass through the chordae tendineae, otherwise the devices are easily entangled with the chordae tendineae, resulting in the device being unable to operate smoothly and even damaging the chordae tendineae causing serious complications. At present, the condition that a pigtail catheter passes through the mitral valve and the tricuspid valve in a retrograde manner is adopted clinically. However, the pigtail catheter is soft, easy to bend during operation, poor in controllability and long in operation time, and the proximal end of the pigtail catheter is a flat circle and may pass through the chordae tendineae and then pass through the orifice of the valve, which may cause complications of the apparatus winding the chordae tendineae. Therefore, the prior art has the defects that the time is long, the chordae tendineae are wound frequently, and related complications such as chordae tendineae damage and the like are easily caused.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the technical scheme of the utility model is that the medical appliance has difficulty in reversely crossing the valve, and is long in time consumption and easy to cause complications.
In order to solve the technical problem, the utility model provides a stride lamella ware is provided, include to stride lamella ware main part and stride lamella ware pole, stride lamella ware main part and be hollow spatial structure, it is the hollow tube to stride lamella ware pole, stride lamella ware pole with stride lamella ware main part and connect.
Optionally, the valve spanning device body is spherical, cylindrical, conical, upper column and lower column tapered, strawberry-shaped or rugby-shaped.
Optionally, the valve spanning device main body is spherical and has a diameter of 6-16 mm; or the valve spanning device main body is cylindrical, the diameter of the bottom surface of the valve spanning device main body is 6 mm-16 mm, and the length of the valve spanning device main body is 6 mm-20 mm.
Optionally, the material of the valve spanning device body has a shape memory function.
Optionally, the valve spanning device body is made of a nickel-titanium alloy wire or a nickel-titanium alloy tube, the diameter of the nickel-titanium alloy wire is 0.05 mm-0.20 mm, and the outer diameter of the nickel-titanium alloy tube is 2 mm-4 mm.
Optionally, the valve spanning device body has meshes or slits.
Optionally, the distal end of the valve crossing device body is provided with an end hole, and the proximal end of the valve crossing device rod is provided with a side hole.
Optionally, the length of the valve crossing device is 300mm-1500mm, and the diameter is 1.5mm-4.0 mm.
Optionally, the valve spanning device body and the valve spanning device rod are connected by laser welding or threads.
Compared with the prior art, the utility model discloses technical scheme has following advantage:
the valve striding device main body is of a hollow three-dimensional structure, the valve striding device rod is a hollow tube and is connected with the valve striding device main body, and a guide wire can smoothly penetrate through the valve striding device main body and the interior of the valve striding device rod.
The valve crossing device main body is spherical and has the diameter of 6-16 nm; or the valve spanning device main body is cylindrical, the diameter of the bottom surface of the valve spanning device main body is 6-16 mm, the length of the valve spanning device main body is 6-20 mm, and the size range is larger than the size of the pore between the chordae tendineae, so that the valve spanning device main body cannot penetrate through the middle of the chordae tendineae net, but penetrates through the valve opening between the two valve leaflets in a retrograde valve spanning manner.
The valve striding device main body has a shape memory function, on one hand, the valve striding device main body can be retracted into the small sheath tube and can be restored to an original shape after being pushed out of the sheath tube, and on the other hand, the valve striding device main body is soft and is not easy to damage when touching heart tissues.
The valve striding device main body is provided with meshes or gaps, so that when blood flows through the valve striding device main body, the impact force on the valve striding device main body is greatly reduced, and the valve striding device main body is prevented from drifting.
The distal end of the valve crossing device body is provided with an end hole, the proximal end of the valve crossing device rod is provided with a side hole, and the guide wire can go out of the side hole at the proximal end along the valve crossing device rod from the end hole at the distal end of the valve crossing device body, so that the valve crossing device body can realize the function of assisting the guide wire in crossing the valve.
Therefore, when the guide wire reversely crosses the valve, the valve crossing device can play a good auxiliary role, the operation time of the operation is greatly shortened, the tendon cable net is not easy to pass through, the probability of generating complications is greatly reduced, and the safety and the treatment effect of the operation are greatly improved.
Drawings
Fig. 1 is a schematic structural diagram of a valve spanning device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a valve spanning device body according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1, the valve spanning device of the embodiment of the present invention comprises: a valve spanning device body 1 and a valve spanning device rod 2. The valve striding device body 1 is a hollow three-dimensional structure, and the valve striding device rod 2 is connected with the valve striding device body 1.
Further, the three-dimensional structure of the valve crossing device body 1 may be spherical, cylindrical, conical, upper column and lower cone, strawberry-shaped or rugby-shaped, etc., fig. 2 shows some shape examples of the valve crossing device body 1, at least one end of the valve crossing device body 1 has a connecting portion 11 for connecting the valve crossing device rod 2, the end of the valve crossing device body 1 connected with the valve crossing device rod 2 is a proximal end, and the other end of the valve crossing device body 1 is a distal end. Correspondingly, the end of the valve-spanning device rod 2 connected with the valve-spanning device body 1 is the distal end, and the other end of the valve-spanning device rod 2 is the proximal end.
In the present embodiment, the valve spanning device body 1 is cylindrical, and in order to ensure that the valve spanning device body 1 does not pass through the middle of the chordae tendineae net, but passes through the orifice between the two valve leaflets to perform retrograde valve spanning, the bottom surface diameter D1 of the valve spanning device body 1 is set to be 6mm to 16mm, and the length L1 is set to be 6mm to 20 mm. In other embodiments, the valve spanning device body 1 may also be spherical, and the diameter thereof is set to be 6 mm-16 mm.
Furthermore, on one hand, in order to enable the valve spanning device main body 1 to be retracted into the small sheath tube and to be restored to the original shape after being pushed out of the sheath tube; on the other hand, the valve body 1 is less likely to be damaged when it touches the heart tissue. Therefore, the main raw material of the valve-spanning device body 1 should be soft and have shape memory effect, such as nitinol wire or nitinol tube.
In the embodiment, the valve spanning device body 1 is made of nickel-titanium alloy wires with the diameter of 0.05-0.20 mm by a weaving mode, 20-60 nickel-titanium alloy wires are woven into a cylinder shape in a crossed reciprocating mode, then the cylinder shape is placed into a cylindrical mold, and the cylinder shape is processed at the temperature of 450-550 ℃ for 5-30 minutes to form the valve spanning device.
In other embodiments, the material of the valve spanning device body 1 may also be nickel-titanium alloy tubes with an outer diameter of 2mm to 4mm, and 20 to 60 nickel-titanium alloy tubes are first cut into railings, and then placed into a cylindrical mold, and processed at a temperature of 450 ℃ to 550 ℃ for 5 minutes to 30 minutes to form the valve spanning device.
Further, the valve spanning device body 1 has meshes or slits, and the distal end has an end hole.
The valve spanning device rod 2 can be a hollow rod or a solid rod, for example, the valve spanning device rod 2 is a hollow round tube, the length L2 of the tube ranges from 300mm to 1500mm, the diameter D2 of the tube ranges from 1.5mm to 4.0mm, and the proximal end of the valve spanning device rod 2 is provided with a side hole.
The valve spanning device rod is not bendable and can be suitable for apical path retrograde valve spanning, for example, the valve spanning device rod can be made of metal or hard polymer materials, such as stainless steel tubes. Alternatively, the valve spanning device rod may be bendable and may be adapted for retrograde valve spanning from an arterial approach into the ventricle, for example, the material of the valve spanning device rod is a flexible polymer material or a metal cable.
The valve spanning device body 1 and the valve spanning device rod 2 can be connected by laser welding or threads.
The steps for making the valve-spanning device are described below with reference to fig. 1:
1) firstly, 30 nickel-titanium alloy wires with the diameter of 0.10mm are woven into a cylindrical tubular structure in a crossing and reciprocating manner;
2) filling the tubular structure obtained in the step 1) into a cylindrical mold, and processing at 500 ℃ for 15 minutes to form a cylinder;
3) and finally, welding a stainless steel hollow rod with the structure obtained in the step 2) to obtain the valve spanning device.
While specific embodiments of the present invention have been described in detail, it will be appreciated that modifications and variations can be made by persons skilled in the art in light of the above teachings without inventive faculty. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (7)
1. A valve spanning device is characterized by comprising a valve spanning device body and a valve spanning device rod, wherein the valve spanning device body is of a hollow three-dimensional structure, the valve spanning device rod is connected with the valve spanning device body, the distal end of the valve spanning device body is provided with an end hole, the proximal end of the valve spanning device rod is provided with a side hole, and the valve spanning device body is provided with meshes or gaps.
2. The valve spanning device of claim 1, wherein the valve spanning device body is spherical, cylindrical, conical, tapered from top to bottom, strawberry-shaped, or rugby-shaped.
3. The valve spanning device of claim 1, wherein the valve spanning device body is spherical and has a diameter of 6mm to 16 mm; or the valve spanning device main body is cylindrical, the diameter of the bottom surface of the valve spanning device main body is 6 mm-16 mm, and the length of the valve spanning device main body is 6 mm-20 mm.
4. The valve crossing device of claim 1, wherein the material of the valve crossing device body has a shape memory function.
5. The valve spanning device of claim 4, wherein the valve spanning device body is made of a nickel-titanium alloy wire or a nickel-titanium alloy tube, the diameter of the nickel-titanium alloy wire is 0.05 mm-0.20 mm, and the outer diameter of the nickel-titanium alloy tube is 2 mm-4 mm.
6. The valve spanning device of claim 1, wherein the valve spanning device rod has a length of 300mm to 1500mm and a diameter of 1.5mm to 4.0 mm.
7. The valve spanning device of claim 1, wherein the valve spanning device body and the valve spanning device rod are connected by laser welding or threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720639742.8U CN210447085U (en) | 2017-06-02 | 2017-06-02 | Cross-petal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720639742.8U CN210447085U (en) | 2017-06-02 | 2017-06-02 | Cross-petal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210447085U true CN210447085U (en) | 2020-05-05 |
Family
ID=70428224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720639742.8U Active CN210447085U (en) | 2017-06-02 | 2017-06-02 | Cross-petal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210447085U (en) |
-
2017
- 2017-06-02 CN CN201720639742.8U patent/CN210447085U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 201109 14th Block 1288 Chunchun Road, Minhang District, Shanghai Patentee after: Shanghai Hanyu Medical Technology Co.,Ltd. Address before: 201612 Room 411, building 5, No. 818, Jiuxin Road, Songjiang District, Shanghai Patentee before: SHANGHAI HANYU MEDICAL TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP02 | Change in the address of a patent holder |
Address after: Room X4, 3rd Floor, Building 1, No. 18, Chunchang Road, Minhang District, Shanghai, 201108 Patentee after: Shanghai Hanyu Medical Technology Co.,Ltd. Address before: 201109 14th Block 1288 Chunchun Road, Minhang District, Shanghai Patentee before: Shanghai Hanyu Medical Technology Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder |