CN219594900U - Device for preventing displacement in balloon expanded valve operation - Google Patents
Device for preventing displacement in balloon expanded valve operation Download PDFInfo
- Publication number
- CN219594900U CN219594900U CN202320331932.9U CN202320331932U CN219594900U CN 219594900 U CN219594900 U CN 219594900U CN 202320331932 U CN202320331932 U CN 202320331932U CN 219594900 U CN219594900 U CN 219594900U
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- Prior art keywords
- valve
- balloon
- control part
- fixed control
- limiting
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 26
- 230000000149 penetrating effect Effects 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 6
- 230000002265 prevention Effects 0.000 claims description 5
- 239000012780 transparent material Substances 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 208000014674 injury Diseases 0.000 abstract description 5
- 230000008733 trauma Effects 0.000 abstract description 5
- 230000010339 dilation Effects 0.000 description 5
- 210000001765 aortic valve Anatomy 0.000 description 3
- 206010002906 aortic stenosis Diseases 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 208000003017 Aortic Valve Stenosis Diseases 0.000 description 1
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 208000019622 heart disease Diseases 0.000 description 1
- 238000001727 in vivo Methods 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
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000010837 poor prognosis Methods 0.000 description 1
- 210000005077 saccule Anatomy 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
Abstract
The utility model discloses a device for preventing displacement in balloon expanded valve operation, comprising: the delivery system comprises a delivery pipeline, wherein one end of the delivery pipeline is provided with a valve bracket; the limiting part is sleeved outside the conveying pipeline, and a gap is reserved between the limiting part and the conveying pipeline; the fixed control part is movably arranged in the gap in a penetrating way, and the overhanging end of the fixed control part can be folded back into the gap to a set distance after penetrating through the mesh of the valve support outwards, so that the limiting part is tightly connected with the valve support; the fixed control part has shape memory, and when the overhanging end of the fixed control part is separated from the limiting part and returns to an initial state, the fixed control part is in a straight line shape. The utility model has reliable connection and fixation, is not easy to shift the valve bracket, realizes a smaller conveying system and reduces the trauma of operation.
Description
Technical Field
The utility model relates to the technical field of medical appliances, in particular to a device for preventing displacement in balloon expanded valve operation.
Background
Aortic stenosis is a common heart disease with a gradual rise in incidence as the population ages. The disease has a poor prognosis and the median survival in symptomatic patients is only 2-3 years. In the past, surgical aortic valve replacement is the most main treatment means of aortic valve stenosis, but has the defects of large trauma, more complications, high mortality rate and the like. Transcatheter valve replacement (TAVR) has become a current heart interventional instrument development hotspot for over 10 years due to its low trauma and high safety.
In general, interventional valves used in TAVR procedures include two broad categories, self-expanding valves and balloon-expanded valves. Balloon expanded valves have a higher international rate of use due to simpler operation, short valve frames, and low impact on coronary access and conduction systems. The valve is characterized in that a metal stent with a biological valve is compressed on an expansion saccule and is delivered to an aortic valve position to be spread and fixed at a diseased aortic. During in vivo delivery, particularly during crossing of the diseased aortic valve of the human body, the valve stent may become dislodged from the balloon by resistance of the human tissue, resulting in surgical risks. The current solution is to provide clips at both ends of the valve stent so as to prevent the valve stent from shifting back and forth. However, this solution increases the size of the delivery system and does not completely eliminate the risk of valve stent displacement, which is still reported in actual clinical practice.
Disclosure of Invention
In view of the above, it is desirable to provide a device for preventing displacement during balloon-expanded valve surgery.
A device for preventing displacement in a balloon-expanded valve procedure, comprising:
the delivery system comprises a delivery pipeline, wherein one end of the delivery pipeline is provided with a valve bracket;
the limiting part is sleeved outside the conveying pipeline, and a gap is reserved between the limiting part and the conveying pipeline;
the fixed control part is movably arranged in the gap in a penetrating way, and the overhanging end of the fixed control part can be folded back into the gap to a set distance after penetrating through the mesh of the valve support outwards, so that the limiting part is tightly connected with the valve support;
the fixed control part has shape memory, and when the overhanging end of the fixed control part is separated from the limiting part and returns to an initial state, the fixed control part is in a straight line shape.
In one embodiment, the limiting part is a limiting pipe made of a high polymer transparent material, and the cross section of the limiting pipe is circular.
In one embodiment, the fixing control part is a plurality of metal fixing wires with memory morphology.
In one embodiment, the proximal section of the delivery conduit carrying the valve stent is tapered tubular with a proximal width that is far narrower.
In one embodiment, the valve stent comprises a biological valve and an expandable metallic stent, the biological valve being disposed on the expandable metallic stent.
In one embodiment, the delivery system further comprises a dilation balloon and an operating handle capable of operating the deployment of the dilation balloon at the proximal end of the delivery system, the dilation of the dilation balloon, and the axial displacement of the stopper tube with the delivery system.
According to the device for preventing the displacement in the balloon expanded valve operation, the fixed control part with shape memory property is movably arranged in the gap between the limiting part and the conveying pipeline in a penetrating mode, then the limiting part is tightly connected with the valve support by the fixed control part, the connection is reliable, the displacement of the valve support is not easy to occur, the outer diameter of the limiting part can be smaller than or equal to the outer diameter of the valve support after compression, so that a smaller conveying system is realized, and the trauma of an operation is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a view of the use of the balloon-expandable valve intraoperative displacement prevention device of the present utility model;
FIG. 2 is a partial schematic view of the use of the balloon-expandable valve intraoperative displacement prevention device of the present utility model;
FIG. 3 is a schematic structural view of the balloon-expandable valve intraoperative displacement prevention device of the present utility model;
fig. 4 is a front view of the device of the present utility model for preventing displacement in a balloon-expanded valve procedure.
Detailed Description
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Preferred embodiments of the present utility model are shown in the drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
Referring to fig. 1-4, one embodiment of the present utility model provides an apparatus for preventing displacement in a balloon-expanded valve procedure, comprising:
a delivery system 1 comprising a delivery conduit 11, one end of said delivery conduit 11 being loaded with a valve holder 2;
a limiting part 3 sleeved outside the conveying pipeline 11, wherein a gap is formed between the limiting part 3 and the conveying pipeline 11;
the fixed control part 4 is movably arranged in the gap in a penetrating way, and the overhanging end of the fixed control part 4 can pass through the mesh of the valve bracket 2 outwards and then turn back into the gap to a set distance, so that the limiting part 3 is tightly connected with the valve bracket 2;
wherein the fixed control part 4 has shape memory, and the fixed control part 4 is in a straight line shape when the overhanging end of the fixed control part 4 is separated from the limit part 3 and returns to an initial state.
The device for preventing the displacement in the balloon dilation valve operation is characterized in that the fixed control part 4 with shape memory property is movably arranged in the gap between the limit part 3 and the conveying pipeline 11 in a penetrating mode, then the limit part 3 is tightly connected with the valve support 2 by the fixed control part 4, the connection is reliable, the displacement of the valve support 2 is not easy to occur, the outer diameter of the limit part 3 can be smaller than or equal to the outer diameter of the valve support 2 after the compression, so that the smaller conveying system 1 is realized, and the trauma of the operation is reduced.
In an embodiment of the present utility model, the limiting portion 3 is a limiting tube 31 made of a polymer transparent material, and a cross section of the limiting tube 31 is circular.
In this embodiment, the stopper tube 31 made of a polymer material has good flexibility so as not to affect the bending of the conveying system 1. Specifically, the limiting tube 31 is sleeved on the outer side of the conveying pipeline 11 of the conveying system 1 in the whole process, and is deformed from the proximal end of the conveying system 1 to the position of the external operating handle. The inner diameters of the limiting pipe 31 and the conveying pipeline 11 are close, and the gap between the limiting pipe 31 and the conveying pipeline 11 can only accommodate the fixed control part 4, but the limiting pipe is compact, so that the axial displacement between the limiting pipe 31 and the conveying pipeline 11 is easy. Preferably, the limiting tube 31 is made of a transparent material, so that the situation that the control part 4 is fixed in the limiting tube 31 can be observed.
In an embodiment of the present utility model, the fixing control portion 4 is a plurality of metal fixing wires 41 having a memory morphology, and the number of the metal fixing wires 41 is plural. In this embodiment, the metal fixing wires 41 with memory morphology may be nickel titanium wires, and the number of the metal fixing wires is a plurality of metal fixing wires; the metal fixing wire 41 runs between the limiting tube 31 and the conveying pipeline 11, and after reaching the valve support 2, the metal fixing wire passes through the mesh of the valve support 2 and is folded back to be hidden into the limiting tube 31 and the conveying pipeline 11 again for a small distance, so that a loop is formed, and the limiting tube 31 and the valve support 2 are tightly connected.
It should be noted that, because the loop is pressed by the limiting tube 31 and the conveying pipeline 11, the structure is more stable, so that the limiting tube 31 and the valve support 2 cannot be pulled and separated by external force, and the valve support 2 is prevented from moving to the distal end; simultaneously, the limiting tube 31 props against the proximal end of the valve support 2, and the valve support 2 cannot shift towards the proximal end due to the connection effect of the metal fixing wires 41, so that the valve support 2 is reliably prevented from shifting. After the valve stent 2 is conveyed to a preset position in the body through the device and the conveying system 1, the limiting tube 31 is retracted backwards, the short head folded back by the metal fixing wire 41 can be straightened and separated from the limiting tube 31 in a sliding way due to the shape memory effect, the loop of the metal fixing wire 41 is released, the metal fixing wire 41 is pulled to the far end, and the valve stent 2 can be pulled out, so that the connection and separation between the valve stent 2 and the metal fixing wire 41 are realized.
It should be noted that, the distal end as used herein refers to an end near a target treatment site such as a heart during a surgical operation, and the proximal end refers to an end facing the outside of the body.
Alternatively, the metal fixing wire 41 is clearly developed under X-rays, and thus, the state of the metal fixing wire 41 can be observed in an operation.
In one embodiment of the utility model, the proximal section of the delivery conduit 11 carrying the valve holder 2 is tapered tubular with a width that is substantially narrow. When the limiting tube 31 is pushed to the conveying pipeline 11 for loading the valve bracket 2, the gap between the limiting tube 31 and the conveying pipeline 11 is minimized, and the limiting tube and the conveying pipeline can well limit the metal fixing wire 41. After the stopper pipe 31 is retracted, the gap between the stopper pipe 31 and the delivery pipe 11 becomes large, and the wire 41 is easily separated from the gap therebetween.
In one embodiment of the utility model, the valve stent 2 comprises a biological valve and an expandable metallic stent, the biological valve being disposed on the expandable metallic stent. The delivery system 1 further comprises an expansion balloon and an operating handle, wherein the operating handle can operate bending adjustment of the proximal end of the delivery system 1, expansion of the expansion balloon and axial displacement of the limiting tube 31 and the delivery system 1.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The examples described above represent only a few embodiments of the present utility model and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (6)
1. A device for preventing displacement in a balloon-expanded valve procedure, comprising:
the delivery system comprises a delivery pipeline, wherein one end of the delivery pipeline is provided with a valve bracket;
the limiting part is sleeved outside the conveying pipeline, and a gap is reserved between the limiting part and the conveying pipeline;
the fixed control part is movably arranged in the gap in a penetrating way, and the overhanging end of the fixed control part can be folded back into the gap to a set distance after penetrating through the mesh of the valve support outwards, so that the limiting part is tightly connected with the valve support;
the fixed control part has shape memory, and when the overhanging end of the fixed control part is separated from the limiting part and returns to an initial state, the fixed control part is in a straight line shape.
2. The device for preventing displacement in a balloon expandable valve according to claim 1, wherein the limiting portion is a limiting tube made of a high polymer transparent material, and the limiting tube has a circular cross section.
3. The device for preventing intra-operative displacement of a balloon expandable valve according to claim 2, wherein the fixation control portion is a plurality of metal fixation wires having a memory morphology.
4. A device for preventing intra-balloon valve displacement as claimed in claim 3, wherein the proximal section of the delivery conduit carrying the valve stent is tapered tubular with a proximal width and a distal width.
5. The balloon-expandable valve intraoperative displacement prevention device of claim 1, wherein the valve stent comprises a biological valve and an expandable metal stent, the biological valve disposed on the expandable metal stent.
6. The balloon expandable valve intraoperative displacement prevention device of claim 2, wherein the delivery system further comprises an expansion balloon and an operating handle, the operating handle being capable of operating bending of the proximal end of the delivery system, expansion of the expansion balloon, and axial displacement of the stopper tube and the delivery system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320331932.9U CN219594900U (en) | 2023-02-28 | 2023-02-28 | Device for preventing displacement in balloon expanded valve operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320331932.9U CN219594900U (en) | 2023-02-28 | 2023-02-28 | Device for preventing displacement in balloon expanded valve operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219594900U true CN219594900U (en) | 2023-08-29 |
Family
ID=87756798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320331932.9U Active CN219594900U (en) | 2023-02-28 | 2023-02-28 | Device for preventing displacement in balloon expanded valve operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219594900U (en) |
-
2023
- 2023-02-28 CN CN202320331932.9U patent/CN219594900U/en active Active
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Address after: 201800 Building 2, 925 Jinyuan 1st Road, Jiading District, Shanghai Patentee after: Shanghai Yingtai Medical Equipment Co.,Ltd. Country or region after: China Address before: 201800 Building 2, 925 Jinyuan 1st Road, Jiading District, Shanghai Patentee before: SHANGHAI KINDLY MEDICAL INSTRUMENTS Co.,Ltd. Country or region before: China |