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SU764684A1 - Фильтр-ловушка - Google Patents

Фильтр-ловушка Download PDF

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Publication number
SU764684A1
SU764684A1 SU782579166A SU2579166A SU764684A1 SU 764684 A1 SU764684 A1 SU 764684A1 SU 782579166 A SU782579166 A SU 782579166A SU 2579166 A SU2579166 A SU 2579166A SU 764684 A1 SU764684 A1 SU 764684A1
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SU
USSR - Soviet Union
Prior art keywords
filter
frame
capsule
trap
rod
Prior art date
Application number
SU782579166A
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English (en)
Inventor
Валерьян Петрович Воинов
Николай Михайлович Ведерников
Юрий Иванович Малышев
Леонид Петрович Вербовецкий
Original Assignee
Челябинский государственный медицинский институт
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Priority to SU782579166A priority Critical patent/SU764684A1/ru
Application granted granted Critical
Publication of SU764684A1 publication Critical patent/SU764684A1/ru

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/01Filters implantable into blood vessels
    • A61F2/011Instruments for their placement or removal
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/01Filters implantable into blood vessels
    • A61F2/0105Open ended, i.e. legs gathered only at one side
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/01Filters implantable into blood vessels
    • A61F2002/018Filters implantable into blood vessels made from tubes or sheets of material, e.g. by etching or laser-cutting
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2230/00Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0004Rounded shapes, e.g. with rounded corners
    • A61F2230/0006Rounded shapes, e.g. with rounded corners circular
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2230/00Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0063Three-dimensional shapes
    • A61F2230/0067Three-dimensional shapes conical
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2230/00Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0063Three-dimensional shapes
    • A61F2230/0093Umbrella-shaped, e.g. mushroom-shaped

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)
  • Surgical Instruments (AREA)

Description

1
Изобретение относитс  к медицинской технике, а именно к кардиохирургическим инструментам.
известен фильтр-ловушка, который содержит трубку-проводник со стерж- 5 нем, капсулу, а также округлой форкы пластмассовую пластинку с отверсти ми , в которую запрессован металлический каркас., придающий фильтру форму зонтика. По окружности фильтра вы- 10 полнены острые зубцы,  вл квдиес  продолжением каркаса, которые предназначены дл  фиксации фильтра к стенкам нижней полой вены. Заключенный в еложенном виде в небольшую металличес- 15 кую капсулу фильтр под контролем рентгеновского экрайа ввод  с помощью проводника-трубки через  ремную вену в. нижнюю полую вену и фиксируют в ней путем внедрени  острых его зуб-20 цов в стенку нижней полой вены .
Недостатками данного фильтра-ловушки  вл ютс  предельно узкие возможности его применени , св занные, прежде всего, с особенностью лишь од-25 постороннего его воздействи , а именио , открытый и установленный внутри полой вены фильтр конструктивно невозможно оп ть сложить и убрать в капсулу . Вследствие этого при его исполь-.j ЗО
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(54) ФИЛЬТР-ЛОВУШКА .
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зовании не исключаютс  случаи т желой травмы больного, вызванные повреждением стенок нижней полой вены, окружающих тканей и органов и др. Кроме того, оставл емый в просвете нижней полой вены фильтр сам по себе  вл етс  местом оседани  тромбов, что,в конечном итоге, может привести к полной закупорке нижней полой вены,.
Цель изобретени  - обеспечение .атравматичного введени , фиксации :и извлечени  фильтра при кардкохирургических вмешательствах.
Поставленна  цель достигаетс  тем, что в фильтр-ловушке капсула укреп- . лена на стержне между каркасом и фильтрующим элементом, причем наружный край каркаса снабжен упругим кольцом .
На фиг. 1 изображен фильтр-ловушка , в рабочем положении; на фиг. 2 то же, в сложенном состо нии на фиг. 3 - механизм управлени , в рабочем положении; на фиг. 4 - то же, при сложенном (фильтре; на фиг. 5 и 6 - Моменты использовани  фильтра-ло-. вушки при операции.
В предлагаемом фильтре-ловушке фильтрующий злемент 1 с упругим кольцом 2 закреплен снаружи по кргио каркаса , выполненного из рычаго 3, шарнирно св зайных с трубкой-проводником 4, внутри которой размещен стержень 5. Один конец стержн  5 снабжён капсулой 6, установленной открытым торцом к трубке-проводнику 4 в верЬшне фильтрунвдего элемента 1. Другой конец стержн  5 св зан со штоком 7 механизма управлени , корпус 8 которого жестко соединен с трубкой-проводником 4. На корпусе 8 закреплен фиксатор. 9 и установлена возвратна  пружина 10. .Стержень 5 имеет направл ющий конус 11, атрубка-проводник 4 - обратный конус 12.
Фильтр-ловушка работает следующим образом.
Во врем  кардйохирургичёского вмешательства , например митральной комиссуротомии ,фильтр-ловушку в сложенном состо нии провод т через, отверстие в стенке левого желудочка в восход щую .часть аорты сразу за ее клапаны. Нажатием на шток 7 механизма управлени  вызывают, перемещение стержн  5 с капсулой 6 относительно трубки-проводника 4 до освобождени  рычагов 3 каркаса. Дальнейшее перемещение стержн  5 с капсулой б приводит к нат жению фильтрующего элемен-т .а 1 и расхозкдению рычагов 3 каркаса до упора в сТенку аорты, которое конролируетс  снаружи рукой хирурга. Плотное прилегание кра  фильтрующего элемента 1 обеспечено нат жением упругото кольа 2, при этом происходит сжатие пружины 10. . В уста;нб:вЛённом положении закрепл ют шток 7 относи ,тельно корпуса 8 фиксатором 9, затем вскрывают ушко левого предсерди  и далее по обычцой методике производ т митральную комиссуротомйю.
Тромбы, имевшиес  в полост х левой половины сердца и проникшие во BpesMi комиссуротомии, в аорту, собираютс  в фильтре-ловушке, который в ,то же врем  не преп тствует свободному кровотоку по аорте. После осуществлени  комиссуротомии освобождают фиксатор 9 и под усилием возвратной пружины 10 стержень 5 с. капсулой 6 перемещаетс  в сторону 15ычагов 3 каркаса. Рычаги 3 складываютс  и вход т в капсулу б, а фильтрующий элемент 1 вместе, с тромбами 13 облегает
капсулу 6 снаружи. Затем извлекают фильтр-ловушку в сложенном состо нии Направл ющий конус 11 и обратный конус 12 облегчают проведение фильтраловушки через отверстие в стенке левого желудочка сердца и створках аортального клапан-а.
Таким образом, фильтр-ловушка дает возможность; значительно уменьшить опасность тромбоэмболии магистральных сосудов при оперативном вмешателстве , например во врем  широко распространенной операции митральной и а:ортапьной комиссуротомии, расшир ет показани  к оперативному вмешательству , повышает ее эффективность, облегчает технику операции. Кроме того воз1 1Ьжно дозированное раскрытие фильра-ловушки в зависимости от-диаметра аорты больного, что избавл ет от необходимости создани  набора подобных инструментов разного калибра.
Применение фильтра-ловушки не требует дополнительного оперативного вмшательства и Явл етс  безопасным. Инструмент может быть использован . как при закрытой,так и при открытой (с применением искусственного кровообращени ) методике операций на сердце, поскольку даже самое тщательное удаление тромбов .из полостей левой половины сердца при операци х в услови х искусственного кровообращени  не гарантирует от попадани  мелких тромбов и :капьцинатов в сосуды головного мозга.
/:. - . .

Claims (1)

  1. Формула изобретени 
    Фильтр-ловушка, содержащий трубку-проводник со стержнем; каркас с
    фильтрующим элементом и капсулу, о т л и ч а и щ и.й с   тем, что, с целью атравматичного введени , фиксации и извлечени  фильтра при кардиохирургических вмешательствах, капсула укреплена на стержне между каркасом и фильтрующим элементом, причем наружный край каркаса снабжен упругим Ельцом. . .
    Источники информации, прин тые во внимание, при экспертизе 1. Грудна  хирурги , 1977, 3,
    .с. 15-25.. ,
    1
    Фиг, {
    Фиг. 2
    ФигЗ
    W 7
    9
    иг. 5
SU782579166A 1978-01-31 1978-01-31 Фильтр-ловушка SU764684A1 (ru)

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