CN113855335B - Outer tube at far end easy to pass through bow and conveying system - Google Patents
Outer tube at far end easy to pass through bow and conveying system Download PDFInfo
- Publication number
- CN113855335B CN113855335B CN202111246650.0A CN202111246650A CN113855335B CN 113855335 B CN113855335 B CN 113855335B CN 202111246650 A CN202111246650 A CN 202111246650A CN 113855335 B CN113855335 B CN 113855335B
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- annular
- annular rib
- outer tube
- rib
- pass
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- 239000000463 material Substances 0.000 abstract description 6
- 238000003860 storage Methods 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 10
- 238000002513 implantation Methods 0.000 description 3
- 210000002376 aorta thoracic Anatomy 0.000 description 2
- 210000004204 blood vessel Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000002560 therapeutic procedure Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
- A61F2/2427—Devices for manipulating or deploying heart valves during implantation
- A61F2/2436—Deployment by retracting a sheath
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
- A61F2/2442—Annuloplasty rings or inserts for correcting the valve shape; Implants for improving the function of a native heart valve
- A61F2/2466—Delivery devices therefor
Landscapes
- Health & Medical Sciences (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The application relates to an outer tube with a far end easy to pass through an arch and a conveying system, wherein the outer tube comprises a tube body, a plurality of first annular slits and a plurality of second annular slits are arranged on the tube body, a first annular rib is formed between two adjacent first annular slits, a second annular rib is formed between two adjacent second annular slits, the length of the first annular rib is larger than that of the second annular rib, two longitudinal ribs are further formed on the tube body, and the first annular rib and the second annular rib are both connected with the longitudinal ribs. According to the application, the first circular seam and the second circular seam are designed, so that the pipe body is easier to bend; meanwhile, the connection of the first annular rib and the second annular rib is realized through the design of the longitudinal rib, so that the cut tube body can keep a tubular structure, and therefore, the outer tube can not only realize the storage and release of an intervention valve, but also have stronger structural strength to support the intervention valve under the condition of not changing the existing material.
Description
Technical Field
The application relates to the technical field of medical instruments, in particular to an outer tube at the far end which is easy to pass through an arch and a conveying system.
Background
Interventional therapy is an emerging discipline, which is a therapeutic method by which natural ducts in the body, such as blood vessels, are opened and medical instruments are delivered to focal sites for treatment, replacement, etc. through the body ducts by means of a minimally invasive method.
The implantation of the intervention valve is to compress the intervention valve and then put the valve into a distal outer tube of a delivery system, then the delivery system sends the intervention valve to a replacement part through an arterial or venous vessel for carrying out the operations of income, release, installation or recovery, and the delivery system is retracted to complete the implantation of the intervention valve.
But because the blood vessels of the access are not straight, they pass through the aortic arch. However, the distal outer tube of the delivery system is a relatively inflexible component and also becomes a bottleneck in the ability of the delivery system to pass through the arch, and the more difficult the distal outer tube is to flex, the larger the radius of the passable arch, and the more difficult the patient to pass through the small radius arch is.
Disclosure of Invention
The application aims to provide an outer tube at the far end of an easy passing bow and a conveying system, which are used for solving the problem that the outer tube of the conveying system is difficult to bend and cannot smoothly pass through a bow with a small radius in the prior art.
The application provides an easy-to-pass bow far-end outer tube, which comprises a tube body, wherein a plurality of first annular slits and a plurality of second annular slits are arranged on the tube body, a first annular rib is formed between two adjacent first annular slits, a second annular rib is formed between two adjacent second annular slits, and the length of the first annular rib is longer than that of the second annular rib;
Two longitudinal ribs are further formed on the pipe body, and the first annular ribs and the second annular ribs are connected to the longitudinal ribs.
In one possible implementation manner, a distance between the two longitudinal ribs is smaller than a diameter of the pipe body, and the first annular rib and the second annular rib are respectively located at two sides of the two longitudinal ribs.
In one possible implementation, the tube body includes a proximal end and a distal end, and the portion of the longitudinal rib at the proximal end has a width greater than the portion of the longitudinal rib at the distal end.
In one possible implementation, the longitudinal ribs have a width ranging from 0.5 to 2mm.
In one possible implementation, the width of the first ring rib and the second ring rib in the axial direction ranges from 0.2 to 1mm.
In one possible implementation, the width of the first circumferential seam and the second circumferential seam in the axial direction ranges from 0.1 to 0.5mm.
In one possible implementation manner, the connection positions of the first annular seam and the second annular seam with the longitudinal ribs are arc-shaped.
In one possible implementation manner, the first annular rib and the second annular rib are both spirally distributed or parallel distributed.
In one possible implementation, the ratio of the arc length of the first annular rib to the arc length of the second annular rib is 1.05 to 1.25.
The second aspect of the application also provides a delivery system comprising a handle assembly and a connecting line, the handle assembly being connected to the connecting line, wherein the delivery system further comprises the distal arcuately-prone outer tube provided in the first aspect of the application, and one end of the connecting line remote from the handle assembly is connected to the proximal end of the distal arcuately-prone outer tube.
The technical scheme provided by the application can achieve the following beneficial effects:
according to the outer tube and the conveying system with the far end easy to pass through the bow, the tube body is easier to bend by designing the first circular seam and the second circular seam, so that the minimum bending radius which can be achieved after the outer tube is bent can meet the treatment requirement of any patient with a small-radius bow. Meanwhile, the connection of the first annular rib and the second annular rib is realized through the design of the longitudinal rib, so that the cut tube body can keep a tubular structure, and therefore, the outer tube can not only realize the storage and release of an intervention valve, but also have stronger structural strength to support the intervention valve under the condition of not changing the existing material.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.
Drawings
FIG. 1 is a schematic view of a structure of an outer tube at a distal end of an easy-to-pass bow according to an embodiment of the present application;
FIG. 2 is a cross-sectional view of an outer tube at the distal end of an easy-to-pass arch provided in accordance with an embodiment of the present application;
Fig. 3 is a schematic structural diagram of a conveying system according to an embodiment of the present application;
fig. 4 is a state diagram of the delivery system according to an embodiment of the present application when passing through an arch.
Reference numerals:
1-pipe body
11-First circumferential seam
12-First ring rib
13-Second circumferential seam
14-Second ring rib
15-Longitudinal bar
16-Root portion
2-Proximal end
3-Distal end
10-Easy-to-pass bow distal outer tube
20-Connecting pipeline
30-Handle assembly.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
Detailed Description
For a better understanding of the technical solution of the present application, the following detailed description of the embodiments of the present application refers to the accompanying drawings.
It should be understood that the described embodiments are merely some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
It should be noted that, the terms "upper", "lower", "left", "right", and the like in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In the context of this document, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on the other element or be indirectly on the other element through intervening elements.
Interventional valve delivery systems are common tools for delivering an interventional valve into the human body, which have the function of receiving and releasing the interventional valve. The distal end of existing delivery systems typically comprises an outer tube within which the interventional valve can be received, the outer tube being of a tubular configuration with a certain bending capability to facilitate the delivery system to pass through the vessel being curved in the human body, but in order to enable the outer tube to effectively support the interventional valve while ensuring an efficient receiving or releasing of the interventional valve, the outer tube needs to have a strong supporting capability for the interventional valve, which can lead to a reduced bending capability of the outer tube, i.e. the minimum bending radius of the outer tube after bending still does not meet the implantation requirements of the interventional valve for a part of the patients with a small radius arch (aortic arch).
For this reason, as shown in fig. 1 to 4, the present embodiment provides an easy-to-pass outer tube 10 (hereinafter referred to as outer tube), the easy-to-pass outer tube 10 includes a tube body 1, a plurality of first annular slits 11 and a plurality of second annular slits 13 are provided on the tube body 1, a first annular rib 12 is formed between two adjacent first annular slits 11, a second annular rib 14 is formed between two adjacent second annular slits 13, and the length of the first annular rib is longer than that of the second annular rib 14; two longitudinal ribs 15 are also formed on the pipe body 1, and the first annular rib 12 and the second annular rib 14 are both connected to the longitudinal ribs 15. The pipe body 1 is in a hollow cylindrical tubular structure, and a first circumferential seam 11 and a second circumferential seam 13 can be cut on the pipe body 1 through a laser cutting process and the like in the radial direction of the pipe body 1.
The sum of the first depth and the second depth is smaller than the diameter of the tube body 1, so that a longitudinal rib 15 can be formed between the first annular rib 12 and the second annular rib 14, and a plurality of first annular ribs 12 and a plurality of second annular ribs 14 can be connected through the longitudinal rib 15, so that the cut tube body 1 can still maintain a tubular state, and the intervention valve can be conveniently stored and released. Because the length of the first annular rib is greater than that of the second annular rib, the pipe body 1 is easier to bend towards one side where the second annular rib 14 is located, and the pipe body 1 is easier to bend by designing the first annular seam 11 and the second annular seam 13, so that the minimum bending radius which can be achieved after the outer pipe is bent can meet the treatment requirement of any patient with a small-radius bow. Meanwhile, the connection of the first annular rib 12 and the second annular rib 14 is realized through the design of the longitudinal rib 15, so that the cut pipe body 1 can keep a tubular structure, and therefore, the outer pipe can not only realize the storage and release of an intervention valve, but also has stronger structural strength to support the intervention valve under the condition of not changing the existing materials.
As shown in fig. 2, the distance between the two longitudinal ribs 15 is smaller than the diameter of the pipe body 1, and the first annular rib 12 and the second annular rib 14 are respectively located at two sides of the two longitudinal ribs 15. The first annular rib 12 is an arc positioned on one side of the two longitudinal ribs 15 on the pipe body 1, the second annular rib 14 is an arc positioned on the other side of the two longitudinal ribs 15 on the pipe body 1, and the arc length of the first annular rib 12 is longer than that of the second annular rib 14.
Specifically, the ratio of the arc length of the first annular rib 12 to the arc length of the second annular rib 14 is 1.05 to 1.25. Within this ratio range, it is ensured that the tube 1 has a good bending capacity to pass through a small radius of the arch, while at the same time it is ensured that the tube 1 provides a reliable supporting force for supporting and transporting the intervention valve. In this embodiment, the ratio of arc lengths is preferably 1.15.
As a specific implementation, the tube 1 includes a proximal end 2 and a distal end 3, where the proximal end 2 is the end closer to the operator and the distal end 3 is the end farther from the operator, and the longitudinal ribs 15 may have a uniform width from the proximal end 2 to the distal end 3. However, since the interventional valve is recovered from the distal end 3 to the proximal end 2 of the tube body 1, the proximal end 2 of the tube body 1 needs to bear a larger supporting force from the interventional valve, and for this reason, in this embodiment, the width of the portion of the longitudinal ribs 15 located at the proximal end 2 is larger than the width of the portion of the longitudinal ribs 15 located at the distal end 3, so that the portion of the tube body 1 located at the proximal end 2 has a stronger structural strength, and reliable supporting of the interventional valve can be achieved.
The width of the longitudinal ribs 15 may gradually increase from the distal end 3 of the tube body 1 to the proximal end 2, or may be a first width that is constant over a length of the distal end 3, and a second width that is greater than the first width and that is constant over a length of the proximal end 2.
Specifically, the width of the longitudinal ribs 15 may range from 0.5 to 2mm. Specifically, the thickness of the material may be 0.7mm, 0.9mm, 1.1mm, 1.3mm, 1.5mm, 1.7mm, or 1.9mm. In this embodiment, it is preferably 1.6mm. Within this width range, the pipe body 1 can be made to have both good bending ability and supporting ability.
Further, the width of the first and second beads 12 and 14 in the axial direction may range from 0.2 to 1mm. Specifically, the thickness of the material can be 0.4mm, 0.6mm and 0.8mm. In this embodiment, the thickness is preferably 0.5mm. Within this width, the first and second annular ribs 12, 14 can be made to have a reliable support capacity for the interventional valve, while also allowing for a good bending capacity of the tubular body 1.
Further, the width of the first circumferential slit 11 and the second circumferential slit 13 in the axial direction may range from 0.1 to 0.5mm. Specifically, the thickness of the material can be 0.2mm, 0.3mm and 0.4mm. In this embodiment, the thickness is preferably 0.3mm. In the width range, the bending of the tube body 1 can be facilitated, meanwhile, the first annular ribs 12 and the second annular ribs 14 can be compact, the tube body 1 is ensured to have strong supporting force on the intervention valve, and the retraction and the delivery of the intervention valve are facilitated.
As a specific implementation manner, the connection positions of the first annular seam 11 and the second annular seam 13 and the longitudinal ribs 15 are formed into arc shapes. When the pipe body 1 is bent, stress is concentrated on the root parts 16 of the first circular seam 11 and the second circular seam 13, the root parts 16 are the connecting positions with the longitudinal ribs 15, and if the root parts 16 are provided with prismatic corners, the prismatic corners are torn under the action of the stress, so that the longitudinal ribs 15 are broken. Therefore, in this embodiment, the root portions 16 of the first circumferential seam 11 and the second circumferential seam 13 are designed to be arc-shaped, so that smooth transition of the first circumferential seam 11 and the second circumferential seam 13 at the positions of the longitudinal ribs 15 can be realized, and tearing of the longitudinal ribs 15 due to stress concentration can be avoided.
As a specific implementation, the first annular rib 12 and the second annular rib 14 may each be spirally distributed or parallel distributed. In this embodiment, the distribution is preferably parallel, as shown in fig. 1.
As shown in fig. 1 to 4, the embodiment of the present application further provides a delivery system, which includes a handle assembly 30 and a connecting tube 20, wherein the handle assembly 30 is connected to the connecting tube 20, and the delivery system further includes the distal end outer tube 10 which is easy to pass provided in any embodiment of the present application, and one end of the connecting tube 20, which is far away from the handle assembly 30, is connected to the proximal end 2 of the distal end outer tube 10 which is easy to pass. An operator may operate the delivery system by holding the handle assembly 30 to deliver and deploy the interventional valve through the over-arching distal outer tube 10.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (8)
1. The outer tube is characterized by comprising a tube body (1), wherein a plurality of first annular slits (11) and a plurality of second annular slits (13) are arranged on the tube body (1), a first annular rib (12) is formed between two adjacent first annular slits (11), a second annular rib (14) is formed between two adjacent second annular slits (13), and the length of the first annular rib (12) is larger than that of the second annular rib (14); the ratio of the arc length of the first annular rib (12) to the arc length of the second annular rib (14) is 1.05-1.25;
Two longitudinal ribs (15) are further formed on the pipe body (1), and the first annular rib (12) and the second annular rib (14) are connected to the longitudinal ribs (15);
The tube body (1) comprises a proximal end (2) and a distal end (3), and the width of the portion, located at the proximal end (2), of the longitudinal rib (15) is larger than that of the portion, located at the distal end (3), of the longitudinal rib (15).
2. The outer tube of the distal end easy to pass through the bow according to claim 1, wherein the distance between two longitudinal ribs (15) is smaller than the diameter of the tube body (1), and the first annular rib (12) and the second annular rib (14) are respectively positioned at two sides of the two longitudinal ribs (15).
3. The distal outer tube of easy-to-pass bow according to claim 1, wherein the longitudinal ribs (15) have a width in the range of 0.5-2 mm.
4. The distal outer tube of easy-to-pass bow according to claim 1, wherein the first and second annular ribs (12, 14) have a width in the axial direction ranging from 0.2 to 1mm.
5. The distal outer tube of easy-to-pass according to claim 1, wherein the first circumferential slit (11) and the second circumferential slit (13) have a width in the axial direction ranging from 0.1 to 0.5mm.
6. The outer tube of the distal end easy to pass through the bow according to claim 1, wherein the connecting positions of the first circular seam (11) and the second circular seam (13) and the longitudinal ribs (15) are arc-shaped.
7. The arching-susceptible distal outer tube according to claim 1, characterized in that the first and second annular ribs (12, 14) are both helically or parallel distributed.
8. A delivery system comprising a handle assembly (30) and a connecting tube (20), said handle assembly (30) being connected to said connecting tube (20), characterized in that said delivery system further comprises an easy-to-pass distal outer tube (10) according to any one of claims 1-7, said connecting tube (20) being connected to a proximal end (2) of said easy-to-pass distal outer tube (10) at an end of said connecting tube (20) remote from said handle assembly (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111246650.0A CN113855335B (en) | 2021-10-26 | 2021-10-26 | Outer tube at far end easy to pass through bow and conveying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111246650.0A CN113855335B (en) | 2021-10-26 | 2021-10-26 | Outer tube at far end easy to pass through bow and conveying system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113855335A CN113855335A (en) | 2021-12-31 |
| CN113855335B true CN113855335B (en) | 2024-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111246650.0A Active CN113855335B (en) | 2021-10-26 | 2021-10-26 | Outer tube at far end easy to pass through bow and conveying system |
Country Status (1)
| Country | Link |
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| CN (1) | CN113855335B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104023616A (en) * | 2012-08-24 | 2014-09-03 | 奥林巴斯医疗株式会社 | Curved tube for endoscope |
| CN106175988A (en) * | 2016-09-27 | 2016-12-07 | 金仕生物科技（常熟）有限公司 | A kind of through conduit valve delivery system |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9700411B2 (en) * | 2010-08-17 | 2017-07-11 | St. Jude Medical, Inc. | Delivery system for collapsible heart valve |
| GB2518340A (en) * | 2011-03-15 | 2015-03-25 | Barts & London Nhs Trust | Steerable element for use in surgery |
| CA3033666A1 (en) * | 2016-08-19 | 2018-02-22 | Edwards Lifesciences Corporation | Steerable delivery system for replacement mitral valve and methods of use |
| EP3648708A4 (en) * | 2017-07-06 | 2021-03-31 | Edwards Lifesciences Corporation | Steerable delivery system and components |
| CN107550602B (en) * | 2017-09-28 | 2024-05-14 | 沛嘉医疗科技(苏州)有限公司 | Transcatheter aortic valve delivery system and method of use thereof |
| CN108670501B (en) * | 2018-05-07 | 2023-12-26 | 杭州启明医疗器械股份有限公司 | Sheath tube convenient for recovering interventional instrument and conveying system |
| EP3943142A3 (en) * | 2018-09-10 | 2022-03-02 | Orbusneich Medical Pte. Ltd | Variable flexibility catheter support frame |
| EP3883500B1 (en) * | 2018-11-20 | 2024-11-06 | Edwards Lifesciences Corporation | Deployment tools for delivering a device to a native heart valve |
| CN112675422B (en) * | 2020-12-16 | 2024-06-28 | 杭州德诺电生理医疗科技有限公司 | Hypotube, sheath assembly and retrieval device |
-
2021
- 2021-10-26 CN CN202111246650.0A patent/CN113855335B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104023616A (en) * | 2012-08-24 | 2014-09-03 | 奥林巴斯医疗株式会社 | Curved tube for endoscope |
| CN106175988A (en) * | 2016-09-27 | 2016-12-07 | 金仕生物科技（常熟）有限公司 | A kind of through conduit valve delivery system |
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| CN113855335A (en) | 2021-12-31 |
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