Изобретение относитс к медицинсной технике и касаетс непосредственно усовершенствовани самофиксирующегос протеза кровеносного сосуда, используемого дл замещени пораженных участков аорты и магистральных артерий при аневризмах, атеросклерозе , ранении или расслаивании.The invention relates to a medical technique and relates directly to the improvement of a self-locking prosthesis of a blood vessel used to replace the affected areas of the aorta and main arteries during aneurysms, atherosclerosis, injury or exfoliation.
Целью изобретени вл етс предупреждение миграции протеза.The aim of the invention is to prevent the migration of the prosthesis.
На фиг. 1 изображен протез кровеносного сосуда, общий вид; на фиг. 2 - схема раз- мещени протеза в сосуде.FIG. 1 shows a prosthetic blood vessel, a general view; in fig. 2 is a diagram of the placement of the prosthesis in the vessel.
Протез состоит из эластичной оболочки 1, на внутренней поверхности которой нит ми 2 закреплен основной фиксирующий элемент 3, выполненный в виде плоской изогнутой пружины зигзагообразной формы, свернутой в кольцо. Высота этого элемента выбираетс в зависимости от длины здорового сегмента сосуда, в который он устанавливаетс и не превышает его. Протез снабжен также до- полнительным фиксирующим элементом 4, выполненным по форме, аналогичной основному элементу 3, и соединенным с ним посредством упругих стержней 5. Дополнительный фиксирующий элемент 4 и упругие стержни 5 размещены вне оболочки. Обща высо- та Я обоих фиксирующих элементов и соедин ющих их упругих стержней 5 состав- .лйот ие менее 2d, где d - внутренний диаметр оболочки. В свою очередь длина упругих стержней 5 выбираетс в зависимости от .конфигурации сосуда. Выполнение высоты Н фиксирующих элементов и упругих стержней менее 2d не обеспечивает устойчивого размещени протеза и не предотвращает его от опрокидывани . Оптимальное количествоThe prosthesis consists of an elastic sheath 1, on the inner surface of which the threads 2 fix the main fixing element 3, made in the form of a flat bent spring of zigzag shape, rolled up into a ring. The height of this element is selected depending on the length of the healthy segment of the vessel in which it is placed and does not exceed it. The prosthesis is also provided with an additional fixing element 4, which is made in the form, similar to the main element 3, and is connected to it by means of elastic rods 5. Additional fixing element 4 and elastic rods 5 are placed outside the sheath. The common height I of both fixing elements and the elastic rods connecting them is 5 and less than 2d, where d is the inner diameter of the shell. In turn, the length of the elastic rods 5 is selected depending on the configuration of the vessel. Making the height H of the fixing elements and elastic rods less than 2d does not ensure the stable placement of the prosthesis and does not prevent it from tilting. The optimal amount
упругих стержней - два, диаметрально расположенные один относительно другого.elastic rods - two, diametrically located one relative to another.
Протез устанавливают следующим образом .The prosthesis is set as follows.
Перед установкой оболочку 1 вместе с основным 3 и дополнительным 4 фиксирующими элементами сжимают в радиальном направлении до минимально возможного сечени и устанавливают во внутреннюю полость катетера, который ввод т в необходимый сегмент сосуда. При выводе катетера из сосуда и одновременном удержании протеза неподвижным происходит распр мг ление оболочки протеза под действием фиксирующих элементов 3 до полного контакта ее со стенками сосуда. Основной фиксирующий элемент 3, окруженный каркасом протеза , контактирует с коротким неизмененным участком сосуда, а дополнительный при этом контактирует с внутренней стенкой сосуда вне оболочки протеза.Before installation, the shell 1, together with the main 3 and additional 4 locking elements, is compressed in the radial direction to the minimum possible cross section and installed into the internal cavity of the catheter, which is inserted into the desired segment of the vessel. When the catheter is removed from the vessel and at the same time keeping the prosthesis stationary, the prosthesis sheath is spread under the action of the locking elements 3 until it is completely in contact with the vessel walls. The main fixing element 3, surrounded by the frame of the prosthesis, is in contact with a short unaltered portion of the vessel, and the additional one is in contact with the inner wall of the vessel outside the prosthesis shell.
Формула, изобретени Formula inventions
Самофиксирующийс протез кровеносного сосуда, состо щий из эластичной оболочки с размещенным в ней фиксирующим элементом , выполненным в виде плоской изогнутой пружины зигзагообразной формы, отличаю(цийс тем, что, с целью предупреждени миграции протеза, он снабжен дополнительным фиксирующим элементом аналогичной формы, который размещен вне оболочки и соединен с ней посредством упругих стержней, при этом обща высота фиксирующих элементов с упругими стержн ми вдоль оси протеза составл ет не менее 2d, где d - внутренний диаметр оболочки.A self-fixing prosthesis of a blood vessel, consisting of an elastic sheath with a fixing element placed in it, made in the form of a flat bent spring of a zigzag shape, is distinguished (by the fact that, in order to prevent the prosthesis from migrating, it is equipped with an additional fixing element of a similar shape that is placed outside the shell and is connected to it by means of elastic rods, while the total height of the fixing elements with elastic rods along the axis of the prosthesis is at least 2d, where d is the inner diameter of the sheath hibernation.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU874208828ASU1457921A1 (en) | 1987-03-10 | 1987-03-10 | Self-fixing prosthesis of blood vessel |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU874208828ASU1457921A1 (en) | 1987-03-10 | 1987-03-10 | Self-fixing prosthesis of blood vessel |
| Publication Number | Publication Date |
|---|---|
| SU1457921A1true SU1457921A1 (en) | 1989-02-15 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU874208828ASU1457921A1 (en) | 1987-03-10 | 1987-03-10 | Self-fixing prosthesis of blood vessel |
| Country | Link |
|---|---|
| SU (1) | SU1457921A1 (en) |
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