CN217938472U - Tectorial membrane and bare part mixed stent for aortic aneurysm and aortic dissection treatment - Google Patents
Tectorial membrane and bare part mixed stent for aortic aneurysm and aortic dissection treatment Download PDFInfo
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- CN217938472U CN217938472U CN202221535747.3U CN202221535747U CN217938472U CN 217938472 U CN217938472 U CN 217938472U CN 202221535747 U CN202221535747 U CN 202221535747U CN 217938472 U CN217938472 U CN 217938472U
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Abstract
The utility model belongs to the technical field of medical instrument and specifically relates to a mixed support of tectorial membrane and naked portion for aortic aneurysm and aortic dissection treatment is related to, its tectorial membrane support section, naked portion support section and extension support section including inside intercommunication, the inboard of tectorial membrane support section covers there is the membranaceous material, naked portion support section sets up to naked support, the extension support section set up in the one end of tectorial membrane support section, can set up the branch that is used for rebuilding the relevant important blood vessel of aortic pathology on the naked portion support section, branch runs through the lateral wall of naked portion support section and with the inside of naked portion support section is linked together. The application has the advantages that the application of the covered stent is prevented from plugging the important branch blood vessels which supply blood to the brain and the upper limbs and are emitted by the arch part, the blood supply of the branch artery is ensured, particularly to the brain of a patient, and therefore the treatment effect and the health state of the patient are improved.
Description
Technical Field
The application relates to the field of medical equipment, in particular to a covered membrane and bare part mixed stent for treating aortic aneurysm and aortic dissection.
Background
The aorta is the main blood supply channel of the human body, is used as a main pipeline for the blood ejection of the heart, bears high blood pressure scouring force, and is particularly positioned at the aortic arch. The aortic arch is provided with three branch vessels (for supplying blood to the brain and upper limbs) for supplying blood to the upper half of the human body, and the three branch vessels bear heavy pressure, so that for a hypertensive patient, the aortic vessel is easy to damage the vessel wall due to high-pressure blood flow impact, and further an aortic dissection is caused or aortic aneurysm is formed due to the damage of elastic fibers in the middle layer of the artery. As is known, both the aortic aneurysm and the active dissection are very dangerous diseases, the fatality rate and the disability rate are very high, and the physical and mental health of people is greatly threatened.
The prior treatment of the diseases is to perform combined incision of chest and abdomen for patients under general anesthesia and perform blood vessel replacement of the lesion part under the assistance of extracorporeal circulation and deep hypothermia, circulation stopping and cerebral perfusion. It is obvious that the method is a treatment method with large trauma, high complication, slow recovery of patients and certain mortality. In recent years, with the development of scientific technology, the treatment of the above diseases has been greatly improved. The existing treatment method is to implant a covered stent specially designed and manufactured for the aorta into the diseased part of the aorta through the leg artery, thereby replacing the traditional operation of replacing the large blood vessel with the same curative effect. The existing artery stents are divided into two types, namely a covered stent and a bare stent, wherein the bare stent only has one layer of metal, namely, the stent has no other things; the stent graft refers to a stent coated with a special membranous material (polytetrafluoroethylene, dacron, polyester, polyurethane and the like), which not only retains the function of a bare stent, but also has the characteristics of the membranous material, and the current stent applied to the aorta is mainly the stent graft.
With respect to the related art in the above, the inventors consider that: when the disease involves the aortic arch, the application of the covered stent can block the important branch blood vessels which are emitted from the arch and supply blood to the brain and the upper limb, and influence the blood flow of the branch artery, particularly to the brain of a patient, thereby influencing the blood supply and the health state of the patient.
SUMMERY OF THE UTILITY MODEL
In order to avoid the application of a covered stent to block important branch blood vessels which are emitted by an arch part and supply blood to the brain and the upper limbs and ensure the blood supply of branch arteries, particularly to the brain of a patient, thereby improving the treatment effect and the health state of the patient, the application provides a covered stent and a bare part mixed stent for treating aortic aneurysm and aortic dissection.
The application provides a mixed support of tectorial membrane and naked portion for aortic aneurysm and aortic dissection treatment adopts following technical scheme:
the mixed stent of the covered membrane and the bare part for treating aortic aneurysm and aortic dissection comprises a covered stent section, a bare stent section and an extension stent section which are communicated with each other inside, wherein the covered stent section is covered with a membrane material on the inner side, the bare stent section is set as a bare stent, the extension stent section is arranged at one end of the covered stent section, a branch used for reconstructing an important blood vessel related to aortic lesion can be arranged on the bare stent section, and the branch penetrates through the side wall of the bare stent section and is communicated with the inside of the bare stent section.
By adopting the technical scheme, the mixed stent of the covered stent section and the bare stent section can extend into the ascending, the arching and the descending aorta of a patient in the operation process, the covered stent section with the membranous material can effectively cover and seal the lesion part of the aneurysm in the aorta or the dissection in the aorta, meanwhile, the bare stent section can be placed in the aortic arch position to facilitate the reconstruction of the three branches of the arching part, the design simplifies the original operation procedure and complexity, avoids the reconstruction of the blood vessel branching process through the approach of the neck blood vessel, reduces the occurrence of brain complications, shortens the operation time, improves the operation safety and curative effect, can be applied to the minimally invasive treatment of the aortic aneurysm and the aortic dissection lesion involving the important blood vessels, thereby avoiding the traditional major operation by means of extracorporeal circulation, reducing the operation wound and the striking, reducing the death rate, avoiding the application of the covered stent to seal the important branch vessels supplying the blood of the cerebral arches and the upper limbs from the arching part, ensuring the blood supply of the branch arteries, particularly to the brain of the patient, and improving the treatment effect and the health state of the patient.
Optionally, the diameter of the branches is smaller than the diameter of the bare stent segment.
Through adopting above-mentioned technical scheme, the diameter of branch is less than the diameter of bare portion support section, can make branch be convenient for more pass the gap of bare portion support section through the seal wire, also accords with the dissection characteristic of branch's blood vessel simultaneously more.
Optionally, the bare stent section is located in the middle of the covered stent section, the diameter of the bare stent section is smaller than that of the covered stent section, and the number of the branches is set to three.
By adopting the technical scheme, the branches can be respectively sent into the brachiocephalic trunk artery, the left common carotid artery and the left subclavian artery from the gap part of the bare stent section through the guide wire selection, and the branch stents are implanted on the basis to reconstruct the blood vessel.
Optionally, the bare stent section is located at one end of the stent graft section, and the number of the branches is two.
By adopting the technical scheme, the gap part of the bracket section at the naked part can be selected to enter the left common carotid artery and the left subclavian artery respectively through the guide wire, and each branch bracket is implanted on the basis, so that the two branches can reconstruct the left common carotid artery or the left subclavian artery respectively, the blood supply of the blood vessel branch is ensured, and the treatment effect is improved.
Optionally, the bare stent section is located at one end of the stent graft section, and the number of the branches is set to be one.
By adopting the technical scheme, the guide wires can be selected from the gap part of the bare stent to enter the left subclavian artery respectively, and the branch stent is implanted on the basis, so that the branch rebuilds the left subclavian artery, the blood supply of the blood vessel branch is ensured, and the treatment effect is improved.
Optionally, the elongate stent segment is configured as a bare stent.
By adopting the technical scheme, the abdominal aorta can be more effectively supported by the extension support section, the false cavity caused by the interlayer in the blood vessel from the descending aorta to the abdominal aorta can be more effectively supported by the extension support section, the support effect is improved, and meanwhile, the extension branch is set to be a bare support, so that the blockage of the extension branch on the visceral branch blood supply blood vessel from the descending aorta and the abdominal aorta is avoided.
Optionally, the diameter of the elongate stent section decreases gradually in a direction away from the stent graft section.
By adopting the technical scheme, the prolonged support section with the gradually reduced diameter improves the adaptability between the prolonged support and the abdominal aorta, thereby improving the supporting effect of the prolonged support section.
In summary, the present application includes at least the following advantageous technical effects:
1. the mixed stent of the covered stent section and the bare stent section can extend into the ascending, the arch and the descending aorta of a patient in the operation process, the covered stent section with the film material can effectively cover and seal the lesion part of the aneurysm in the aorta or the dissection laceration, and the bare stent section can be placed in the aortic arch position, so as to conveniently complete the reconstruction of three branches of the arch part, simplify the original operation procedure and complexity, avoid the reconstruction of the blood vessel branching process through the approach of the neck blood vessel, reduce the occurrence of brain complications, shorten the operation time, improve the operation safety and curative effect, and can be applied in the minimally invasive treatment of the aortic aneurysm and the aortic dissection lesion which involve important blood vessel branches, thereby avoiding the traditional major operation by means of extracorporeal circulation, reducing the operation wound and the striking, reducing the death rate, avoiding the application of the covered stent from sealing the important branch blood vessels which supply the blood of the brain and the upper limb and ensure the blood supply of the branch arteries, particularly the brain of the patient, and improving the treatment effect and the health state of the patient;
2. the branches can be respectively sent into the brachiocephalic trunk artery, the left common carotid artery and the left subclavian artery from the gap part of the bare stent section through the selection of guide wires, and each branch stent is implanted on the basis to reconstruct the blood vessel;
3. the utility model discloses a blood vessel blocking support, including the aorta descending, the branch of utilizing extension support section to support the aorta descending, utilize extension support section to support the aorta descending to the aorta descending in the blood vessel in the aorta, the branch of viscera that leads to because of the intermediate layer is more effective, utilize extension support section to support the false chamber that leads to in the aorta descending to the aorta, when improving the support effect, because of the extension branch sets up to naked support, avoided the extension branch to the branch of viscera that is sent from aorta descending and aorta abdomen blood supply vessel's shutoff.
Drawings
FIG. 1 is a schematic view of the whole structure of a hybrid stent and a covering membrane for aortic aneurysm and aortic dissection treatment according to the embodiment of the invention.
Fig. 2 is a schematic diagram of the normal state of in vivo release in an embodiment of the present application.
FIG. 3 is a schematic structural diagram of a three-branch reconstruction stent in an embodiment of the present application.
FIG. 4 is a normal view of a stent graft segment versus a bare stent segment in accordance with an embodiment of the present application.
FIG. 5 is a view of the application example showing the use of the bare stent section at the proximal end of the stent graft section.
Fig. 6 is a schematic diagram of the normal state of two branch vessel reconstructions in the embodiment of the present application.
FIG. 7 is a view of the application of a bare stent portion at the proximal end of a stent graft segment in an embodiment of the application.
FIG. 8 is a normal view of a stent graft segment and a bare stent segment according to an embodiment of the present application.
Fig. 9 is a diagram of the usage of a stent segment with a branch and a bare portion in an embodiment of the present application.
Fig. 10 is a schematic view of an elongated stent segment in an embodiment of the present application.
Description of the reference numerals: 1. a covered stent section; 11. a film-like material; 2. a bare stent segment; 3. extending the stent section; 4. and (4) branching.
Detailed Description
The present application is described in further detail below with reference to figures 1-10.
The embodiment of the application discloses a covering film and bare part mixed stent for treating aortic aneurysm and aortic dissection.
Referring to fig. 1 and 2, the hybrid stent-graft and bare stent for aortic aneurysm and aortic dissection treatment comprises a stent-graft segment 1, a bare stent segment 2 and an elongated stent segment 3 which are connected together at the ends. The covered stent section 1 is fixedly connected with the bare stent section 2 and is communicated with the inside. The bare stent section 2 can be inserted into the aorta along with the covered stent section 1, and one end of the covered stent section 1 is also continued with an extension stent section 3 which can extend into the abdominal aorta.
Referring to fig. 3, the inside of the stent graft segment 1 is covered with the film material 11, i.e. the stent graft segment 1 is configured as a stent graft, so that the film material 11 is used to improve the coverage of the lesion site of the ascending aorta, thereby achieving the therapeutic effect. The bare stent section 2 can be inserted into the aortic arch, and at most three branches 4 are detachably connected in the meshes of the bare stent section 2. The diameter of each branch 4 is smaller than the diameter of the bare stent section 2, thereby accommodating the diameter of the artery of the aortic branch 4. The branches 4 can enter the brachiocephalic trunk artery, the left common carotid artery and the left subclavian artery respectively through the guide wires via the gaps of the bare stent section 2.
Referring to fig. 3, when the number of the branches 4 is three, the bare stent section 2 is located in the middle of the stent graft section 1, and when the bare stent section 2 moves in the aorta to be opposite to the brachiocephalic artery, the branch 4 can be guided by the guide wire to extend into the brachiocephalic artery and support the brachiocephalic artery; when the branch 4 is opposite to the left common carotid artery, the branch can extend into the left common carotid artery and support the left common carotid artery; when the branch 4 moves to be opposite to the left subclavian artery, the branch 4 can extend into the left subclavian artery and support the left subclavian artery.
Referring to fig. 4, 5 and 6, when the number of the branches 4 is two, the bare stent section 2 is located at one end of the covered stent section 1, and when the branches 4 move in the aorta along with the bare stent section 2 to be opposite to the left common carotid artery and the left subclavian artery respectively, the two branches 4 are guided by guide wires to respectively extend into the left common carotid artery and the left subclavian artery and support the left common carotid artery and the left subclavian artery.
The diameter of the end of the bare stent section 2 connected with the covered stent section 1 is the same as that of the covered stent section 1, and is larger than the diameter of the end of the bare stent section 2 departing from the covered stent section 1, so that the bare stent section is convenient to adapt to anatomical features of the aorta.
Referring to fig. 7, 8 and 9, when the number of the branches 4 is set to one, the bare stent section 2 is located at one end of the stent graft section 1, and when the branches 4 move with the bare stent section 2 to be respectively opposite to the left subclavian artery, the branches 4 are guided by the guide wire to extend into the left subclavian artery, thereby supporting the left subclavian artery.
Referring to fig. 1, 10, the elongate stent section 3 is located on a section of the stent graft section 1 away from the heart, and the elongate stent section 3 is configured as a bare stent. One end of the extension stent section 3 is fixedly connected with the covered stent section 1, and the inside of the extension stent section 3 is communicated with the inside of the covered stent section 1. When the stent graft section 1 is moved into the descending aorta, one end of the elongate stent section 3 facing away from the stent graft section 1 extends from the descending aorta into the abdominal aorta. The diameter of the prolonged stent section 3 is gradually reduced along the direction departing from the covered stent section 1, thereby adapting to the anatomical form of the aorta.
The embodiment of the application provides a stent structure with tectorial membrane and naked portion mixture for aortic aneurysm and aortic dissection operation, and the implementation principle is: in the process of aortic aneurysm and aortic dissection surgery, firstly, a covered stent section 1 is sent into an aorta to cover a diseased part of the aorta, so that a bare stent section 2 extends into an aortic arch part, then a guide wire is selected to enter a branch 4 brachiocephalic trunk artery, a left common carotid artery or a left subclavian artery of the aortic arch part by means of a gap of the bare stent section 2, a stent with a relative caliber is implanted under the guide of the guide wire, the reconstruction of three branches of the arch part is completed, the blood supply of the brain and the upper limbs of a patient is ensured while the aortic lesion is treated, a section of the stent section 3 deviating from the covered stent section 1 is prolonged to extend into an abdominal aorta, the molding of the artery wall after aortic dissection treatment is facilitated, the bare stent design of the stent section 3 is prolonged, the blocking of visceral branches of the abdominal aorta is avoided, and the blood supply of visceral organs is ensured.
The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (7)
1. The mixed stent of the tectorial membrane and the bare part for the treatment of aortic aneurysm and aortic dissection is characterized in that: including covered stent section (1), naked portion support section (2) and extension support section (3) of inside intercommunication, the inboard of covered stent section (1) covers has membranous material (11), naked portion support section (2) set up to naked support, extension support section (3) set up in the one end of covered stent section (1), can set up branch (4) that are used for rebuilding the relevant important blood vessel of aorta pathological change on naked portion support section (2), branch (4) run through the lateral wall of naked portion support section (2) and with the inside of naked portion support section (2) is linked together.
2. The mixed stent for aortic aneurysm and aortic dissection treatment according to claim 1, wherein: the diameter of the branches (4) is smaller than the diameter of the bare stent section (2).
3. The mixed stent of cover and bare part for aortic aneurysm and aortic dissection treatment according to claim 1, wherein: the bare stent section (2) is located in the middle of the covered stent section (1), the diameter of the bare stent section (2) is smaller than that of the covered stent section (1), and the number of the branches (4) is three.
4. The mixed stent of cover and bare part for aortic aneurysm and aortic dissection treatment according to claim 1, wherein: the bare stent section (2) is located at one end of the covered stent section (1), and the number of the branches (4) is two.
5. The mixed stent of cover and bare part for aortic aneurysm and aortic dissection treatment according to claim 1, wherein: the bare stent section (2) is located at one end of the covered stent section (1), and the number of the branches (4) is set to be one.
6. The mixed stent of cover and bare part for aortic aneurysm and aortic dissection treatment according to claim 1, wherein: the extension stent section (3) is configured as a bare stent.
7. The mixed stent of cover and bare part for aortic aneurysm and aortic dissection treatment according to claim 1, wherein: the diameter of the extension stent section (3) is gradually reduced along the direction departing from the covered stent section (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221535747.3U CN217938472U (en) | 2022-06-17 | 2022-06-17 | Tectorial membrane and bare part mixed stent for aortic aneurysm and aortic dissection treatment |
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| CN202221535747.3U CN217938472U (en) | 2022-06-17 | 2022-06-17 | Tectorial membrane and bare part mixed stent for aortic aneurysm and aortic dissection treatment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116492108A (en) * | 2023-03-01 | 2023-07-28 | 中国医学科学院阜外医院 | Branched artery reconstruction auxiliary device and S-C branched priority aortic reconstruction system |
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2022
- 2022-06-17 CN CN202221535747.3U patent/CN217938472U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116492108A (en) * | 2023-03-01 | 2023-07-28 | 中国医学科学院阜外医院 | Branched artery reconstruction auxiliary device and S-C branched priority aortic reconstruction system |
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