CN111358593A - Quick-connection type thoracotomy vascular stent and conveying system - Google Patents

Quick-connection type thoracotomy vascular stent and conveying system Download PDF

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Publication number
CN111358593A
CN111358593A CN202010194885.9A CN202010194885A CN111358593A CN 111358593 A CN111358593 A CN 111358593A CN 202010194885 A CN202010194885 A CN 202010194885A CN 111358593 A CN111358593 A CN 111358593A
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CN
China
Prior art keywords
stent
covered
blood vessel
support ring
artificial blood
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010194885.9A
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Chinese (zh)
Inventor
孙立忠
郑军
杜广武
闫冬环
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Baiyouda Life Technology Co ltd
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Jiangsu Baiyouda Life Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Baiyouda Life Technology Co ltd filed Critical Jiangsu Baiyouda Life Technology Co ltd
Priority to CN202010194885.9A priority Critical patent/CN111358593A/en
Publication of CN111358593A publication Critical patent/CN111358593A/en
Priority to PCT/CN2021/081097 priority patent/WO2021185251A1/en
Pending legal-status Critical Current

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    • 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
    • A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
    • A61F2/06—Blood vessels
    • A61F2/07—Stent-grafts
    • 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
    • A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
    • A61F2/06—Blood vessels
    • A61F2/064—Blood vessels with special features to facilitate anastomotic coupling
    • 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
    • A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
    • 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
    • A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
    • A61F2/06—Blood vessels
    • A61F2002/065—Y-shaped blood vessels
    • A61F2002/067—Y-shaped blood vessels modular
    • 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
    • A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
    • A61F2002/9505—Instruments specially adapted for placement or removal of stents or stent-grafts having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument
    • A61F2002/9511—Instruments specially adapted for placement or removal of stents or stent-grafts having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument the retaining means being filaments or wires

Abstract

The invention discloses a quick connection type thoracotomy vascular stent system, which comprises an artificial blood vessel, a covered stent and a support piece, wherein the artificial blood vessel is provided with a stent core; the covered stent comprises a stent body and a covered membrane covered outside the stent body, wherein the length of the covered membrane exceeds that of the stent body; the artificial blood vessel and the covering film covering the stent body are integrally woven, and a section of covering film without a stent exists between the far-end center of the artificial blood vessel and the near-center end of the covering film stent; the support piece comprises a support ring and a cover film wrapped on the outer layer of the support ring, the support ring is positioned on the outer layer of the cover film without the support, and the distal ends of the support ring and the cover film are anastomosed on the cover film. The conveying system of the open thoracic vessel stent comprises a conveying rod, a supporting structure, a conveying handle, a first control component, a second control component and a fixing band. The vascular stent and the delivery system provided by the invention avoid the anastomosis of the proximal end of the descending aorta and the proximal end of the covered stent placed in the descending aorta, and shorten the operation time.

Description

Quick-connection type thoracotomy vascular stent and conveying system
Technical Field
The invention relates to a quick connection type thoracotomy vessel stent and a conveying system, and belongs to the technical field of medical instruments.
Background
The treatment of diffuse aortic disease is a difficult point of aortic surgery, especially complicated diffuse aortic aneurysm and aortic dissection which simultaneously affect the aortic arch and thoracic descending aorta, critical illness and high mortality.
The trunk operation introduced by Borst et al simplifies the difficulty of staged operation and obtains better treatment effect. With the development of aortic surgery, Kato et al introduced the stent technology into the trunk operation based on the intraluminal intervention of the aorta, resulting in a stent trunk operation. The specific method comprises the following steps: the far end of the artificial blood vessel is lined with a self-expanding metal stent, the blood vessel with the stent is placed at the far end of the thoracic descending aorta in a antegrade way through an aortic arch incision or a descending aorta near-end incision by a conveying system, and the near end of the artificial blood vessel is anastomosed with the reconstructed aortic arch after being released.
In the operation process, the deep low temperature stopping circulation is needed to perform the replacement anastomosis of the aortic arch part blood vessel and the anastomosis of the proximal end of the artificial blood vessel and the reconstructed aortic arch, and meanwhile, in order to prevent the proximal end of the descending aorta from leaking into the stent vascular component, the proximal end of the descending aorta needs to be anastomosed with the stent blood vessel in the implantation period. The operation time is long, and the technical requirement on anastomosis is high. In addition, prolonged periods of circulatory arrest increase the time of cerebral ischemia, leading to postoperative complications. Therefore, how to reduce the time of the deep low temperature shutdown and the matching time is a problem to be solved.
Disclosure of Invention
The purpose is as follows: in order to overcome the defects in the prior art, the invention provides a quick-connection type open thoracic vascular stent and a delivery system, which can shorten the time of an aortic surgery.
The technical scheme is as follows: in order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a fast connection type thoracotomy blood vessel stent comprises an artificial blood vessel, a covered stent and a support piece; the covered stent comprises a stent body and a covered membrane covered outside the stent body, wherein the length of the covered membrane exceeds that of the stent body;
the artificial blood vessel and the covering film covering the stent body are integrally woven, and a section of covering film without a stent exists between the far-end center of the artificial blood vessel and the near-center end of the covering film stent;
the support piece comprises a support ring and a cover film wrapped on the outer layer of the support ring, the support ring is positioned on the outer layer of the cover film without the support, and the distal ends of the support ring and the cover film are anastomosed on the cover film.
Furthermore, the artificial blood vessel is provided with artificial blood vessel branches, and the water permeability of the artificial blood vessel is less than or equal to 10 ml/cm2·min。
Further, the stent body of the covered stent is of a self-expanding stent structure.
Furthermore, the support ring is of a compressible and self-expandable annular structure, and the length of the support ring is 1-5 cm.
Further, the length of the cover membrane exceeds that of the support ring, and the water permeability of the cover membrane is less than or equal to 10 ml/cm2·min。
A conveying system of a quick connection type open thoracic vascular stent comprises a conveying rod, a supporting structure, a conveying handle, a first control part, a second control part and a fixing belt;
the blood vessel stent is assembled and bound on a delivery system, the tectorial stent is bound at a delivery rod, and the support ring is bound at a support structure; the first control component is connected with the covered stent and controls the release of the covered stent; the second control part is connected with the support part and controls the release of the support part.
Furthermore, the bending degree of the conveying rod is adjustable, and the bending degree adjusting range is 0-90 degrees.
Furthermore, the supporting structure is a balloon, and a valve for controlling inflation is arranged in cooperation with the balloon.
Furthermore, the supporting structure is a mechanical claw capable of being opened and closed, the mechanical claw is cylindrical after being opened, and a pushing rod for controlling the mechanical claw to be opened and closed is arranged in cooperation with the mechanical claw.
Further, the fixed band is any one of magic subsides, stylolite, line area, ribbon.
Has the advantages that: according to the fast-connection type thoracotomy vessel stent and the conveying system provided by the invention, after the supporting piece and the covered stent are sequentially released in the descending aorta, the supporting force of the supporting structure of the conveying system is utilized, and the proximal end of the descending aorta is tightly tied with the supporting piece through the fixing belt, so that the anastomosis between the proximal end of the descending aorta and the proximal end of the covered stent placed in the descending aorta is avoided, meanwhile, the artificial blood vessel and the covered stent are integrally woven, the anastomosis of the distal end of the aortic arch after replacement is avoided, the operation time is reduced, the time of deep low temperature stopping circulation is shortened, and the influence on a patient is reduced.
Drawings
FIG. 1 is a schematic structural diagram of a vascular stent;
FIG. 2 is a schematic structural view of a delivery system in which the support structure is a balloon;
FIG. 3 is a schematic diagram of a transport system with a gripper as the support structure;
FIG. 4 is a schematic structural view of a pair of parallel fastening tapes;
fig. 5 is a schematic view of the assembly of a vascular stent to a delivery system in which the support structure is a balloon.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in figure 1, the quick-connection type open-chest blood vessel stent comprises an artificial blood vessel 1, a covered stent 4 and a support member 2.
The artificial blood vessel 1 is provided with an artificial blood vessel branch 12, and the water permeability of the artificial blood vessel is less than or equal to 10 ml/cm2Min. The artificial blood vessel branch 12 is not an essential component of the artificial blood vessel 1, and may or may not be provided.
The stent graft 4 comprises a stent body 41 and a coating 42 covering the outside of the stent body, wherein the length of the coating 42 exceeds the length of the stent body 41. The artificial blood vessel 1 and the coating 42 covered outside the stent body are integrally woven, and a section of coating without a stent exists between the far-end of the artificial blood vessel 1 and the near-end of the coated stent 4, namely the inner side of the section of coating has no stent body. The stent body 41 has a self-expanding stent structure.
The supportThe part 2 comprises a support ring 21 and a cover film 22 wrapped on the outer layer of the support ring, the support ring 21 is positioned on the outer layer of the cover film without a stent, and the distal ends of the support ring 21 and the cover film 22 are anastomosed on the cover film 42. The support ring 21 is of a compressible and self-expandable annular structure, and the length of the support ring 21 is 1-5 cm; the length of the cover film 22 exceeds the length of the support ring 21, and the water permeability of the cover film 22 is less than or equal to 10 ml/cm2·min。
The transmission system of the quick-connection type open thoracic vascular stent comprises a conveying rod 62, a supporting structure 7, a conveying handle 61, a first control component 64, a second control component 65 and a fixing belt 8. The bending degree of the conveying rod 62 is adjustable, and the bending degree adjusting range is 0-90 degrees.
The fixing band 8 is a magic tape, a suture line, a line belt or a binding belt; the fixing belts 8 may be single or double, and fig. 4 shows that the fixing belts are double.
The vascular stent assembly is tied to the delivery system, the stent graft 4 is tied to the delivery rod 62 with the coil 3, and the support member 2 is tied to the support structure 7 with the coil 3. The first control component 64 is connected with the covered stent 4 to control the release of the covered stent 4, and a coil for restraining the covered stent is penetrated on the first control component 64; the second control part 65 is connected with the support 2 to control the release of the support 2, and the fish coil for binding the support ring is threaded on the second control part 65. The coil 3 may be replaced with a fishbone-like coating or a detachable fabric. The first control component 64 and the second control component 65 are metal wires, which can be stainless steel wires or nickel-titanium wires, small holes are arranged on coils or fishbone-shaped coating films or detachable fabrics which are used for binding the covered stent and the supporting piece, the first control component 64 and the second control component 65 are buckled on the small holes, the coils or the fishbone-shaped coating films or the detachable fabrics can be scattered when the control components are pulled, and therefore the covered stent or the supporting piece can be released.
As shown in fig. 2, the supporting structure 7 is a balloon, and a valve 63 for controlling inflation and an inflation channel for connecting the balloon and the valve are arranged in cooperation with the balloon.
The using method of the open-chest vascular stent and the delivery system thereof in the embodiment is as follows:
as shown in fig. 5, the vascular stent is assembled and tied on the delivery system in advance; after the chest of the patient is opened in the middle, the arch of the diseased aorta is cut off, the proximal end of the descending aorta is peeled off, the covered stent 4 is placed into the descending aorta by using the conveying system, and the second control part 65 is pulled to release the support part 2 to pop open; the valve 63 is started to inflate the balloon to expand the supporting structure 7 to the descending aorta diameter; the fixing belt 8 is wound for a circle along the outer wall of the descending aorta and then tightened; pulling the first control member 64 releases the stent graft 4 from springing open and then removing the delivery system; the proximal end of the artificial blood vessel 1 is anastomosed with the ascending aorta to complete the operation.
In another embodiment, as shown in fig. 3, the supporting structure 71 is an openable mechanical claw, the mechanical claw is cylindrical after being opened, and a pushing rod 66 for controlling the opening and closing of the mechanical claw is arranged in cooperation with the mechanical claw.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.

Claims (10)

1. A quick connect type open chest blood vessel stent is characterized in that: comprises an artificial blood vessel, a covered stent and a supporting piece; the covered stent comprises a stent body and a covered membrane covered outside the stent body, wherein the length of the covered membrane exceeds that of the stent body;
the artificial blood vessel and the covering film covering the stent body are integrally woven, and a section of covering film without a stent exists between the far-end center of the artificial blood vessel and the near-center end of the covering film stent;
the support piece comprises a support ring and a cover film wrapped on the outer layer of the support ring, the support ring is positioned on the outer layer of the cover film without the support, and the distal ends of the support ring and the cover film are anastomosed on the cover film.
2. The quick connect open-chest vascular stent of claim 1, wherein: the artificial blood vessel is provided with artificial blood vessel branches and water seepage of the artificial blood vesselThe rate is less than or equal to 10 ml/cm2·min。
3. The quick connect open-chest vascular stent of claim 1, wherein: the stent body of the covered stent is of a self-expanding stent structure.
4. The quick connect open-chest vascular stent of claim 1, wherein: the support ring is a compressible and self-expandable annular structure, and the length of the support ring is 1-5 cm.
5. The quick connect open-chest vascular stent of claim 1, wherein: the length of the cover film exceeds that of the support ring, and the water permeability of the cover film is less than or equal to 10 ml/cm2·min。
6. The delivery system of a quick connect open-chest vascular stent of any one of claims 1-5, wherein: the conveying system comprises a conveying rod, a supporting structure, a conveying handle, a first control part, a second control part and a fixing belt;
the blood vessel stent is assembled and bound on a delivery system, the tectorial stent is bound at a delivery rod, and the support ring is bound at a support structure; the first control component is connected with the covered stent and controls the release of the covered stent; the second control part is connected with the support part and controls the release of the support part.
7. The system of claim 6, wherein: the bending degree of the conveying rod is adjustable, and the bending degree adjusting range is 0-90 degrees.
8. The system of claim 6, wherein: the supporting structure is a balloon, and a valve for controlling inflation is arranged in cooperation with the balloon.
9. The system of claim 6, wherein: the supporting structure is a mechanical claw capable of being opened and closed, the mechanical claw is cylindrical after being opened, and a pushing rod for controlling the mechanical claw to be opened and closed is arranged in a matched mode with the mechanical claw.
10. The system of claim 6, wherein: the fixed band is any one of magic subsides, stylolite, line area, ribbon.
CN202010194885.9A 2020-03-19 2020-03-19 Quick-connection type thoracotomy vascular stent and conveying system Pending CN111358593A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202010194885.9A CN111358593A (en) 2020-03-19 2020-03-19 Quick-connection type thoracotomy vascular stent and conveying system
PCT/CN2021/081097 WO2021185251A1 (en) 2020-03-19 2021-03-16 Quick-connection thoracotomy intravascular stent and delivery system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010194885.9A CN111358593A (en) 2020-03-19 2020-03-19 Quick-connection type thoracotomy vascular stent and conveying system

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WO (1) WO2021185251A1 (en)

Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN112190363A (en) * 2020-10-16 2021-01-08 江苏百优达生命科技有限公司 Integrated intravascular stent and conveying system
WO2021185251A1 (en) * 2020-03-19 2021-09-23 江苏百优达生命科技有限公司 Quick-connection thoracotomy intravascular stent and delivery system
WO2022257163A1 (en) * 2021-06-09 2022-12-15 上海畅迪医疗科技有限公司 Blood vessel connecting device and preparation method therefor
CN115517811A (en) * 2022-11-01 2022-12-27 北京华脉泰科医疗器械股份有限公司 Integrated stent artificial blood vessel and artificial blood vessel replacement kit

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CN116942384B (en) * 2023-09-19 2023-12-05 北京华脉泰科医疗器械股份有限公司 Suture-free multi-branch artificial blood vessel covered stent

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CN106333767A (en) * 2016-10-10 2017-01-18 戚悠飞 Bracket type vascular anastomosis device
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021185251A1 (en) * 2020-03-19 2021-09-23 江苏百优达生命科技有限公司 Quick-connection thoracotomy intravascular stent and delivery system
CN112190363A (en) * 2020-10-16 2021-01-08 江苏百优达生命科技有限公司 Integrated intravascular stent and conveying system
WO2022077857A1 (en) * 2020-10-16 2022-04-21 江苏百优达生命科技有限公司 Integrated vascular stent and delivery system
WO2022257163A1 (en) * 2021-06-09 2022-12-15 上海畅迪医疗科技有限公司 Blood vessel connecting device and preparation method therefor
CN115517811A (en) * 2022-11-01 2022-12-27 北京华脉泰科医疗器械股份有限公司 Integrated stent artificial blood vessel and artificial blood vessel replacement kit

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Inventor after: Du Guangwu

Inventor after: Sun Lizhong

Inventor after: Yan Donghuan

Inventor before: Sun Lizhong

Inventor before: Zheng Jun

Inventor before: Du Guangwu

Inventor before: Yan Donghuan

RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20200703