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RU2062121C1 - Dilating device - Google Patents

Dilating device Download PDF

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Publication number
RU2062121C1
RU2062121C1 SU4751081A RU2062121C1 RU 2062121 C1 RU2062121 C1 RU 2062121C1 SU 4751081 A SU4751081 A SU 4751081A RU 2062121 C1 RU2062121 C1 RU 2062121C1
Authority
RU
Russia
Prior art keywords
dilator
conveyer
lumen
bends
cord
Prior art date
Application number
Other languages
Russian (ru)
Inventor
В.А. Давыдов
Л.А. Монасевич
В.Э. Гюнтер
А.Н. Иванов
А.В. Еськов
Р.Ф. Тагиров
А.В. Староха
Г.Ц. Дамбаев
Original Assignee
Давыдов Владимир Александрович
Монасевич Леонид Абрамович
Гюнтер Виктор Эдуардович
Иванов Александр Николаевич
Еськов Александр Владимирович
Тагиров Ринат Фаттахович
Староха Александр Владимирович
Дамбаев Георгий Цыренович
Томский Медицинский Институт
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
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Application filed by Давыдов Владимир Александрович, Монасевич Леонид Абрамович, Гюнтер Виктор Эдуардович, Иванов Александр Николаевич, Еськов Александр Владимирович, Тагиров Ринат Фаттахович, Староха Александр Владимирович, Дамбаев Георгий Цыренович, Томский Медицинский Институт filed Critical Давыдов Владимир Александрович
Priority to SU4751081 priority Critical patent/RU2062121C1/en
Application granted granted Critical
Publication of RU2062121C1 publication Critical patent/RU2062121C1/en

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Abstract

FIELD: medical engineering. SUBSTANCE: device has tubular conveyer unit with conic widening of working end lumen, dilator made as cylindrically coiled zigzag wire spring from titanium nickelide, cord member for pulling the device out and pusher. The dilator is placed into the conveyer in compressed state with the cord brought through all bent parts and conveyer lumen and is introduced into the narrowed portion of a hollow organ. The dilator being hold in this position by applying the pusher through the conveyer lumen, the conveyer is removed. Narrow part dilatation is performed due to elastic spring force acting. To remove the dilator, conveyer tube is brought close to the dilator to come in engagement with it and the dilator is drawn into the conveyer lumen by means of the cord. To facilitate the process of pulling the dilator in, its ends are bent inward, one end is elongated by 0.5-0.1 dilator diameter and the internal surface of the conveyer working end has conic widening. EFFECT: enhanced effectiveness of treatment. 4 cl, 1 dwg

Description

Изобретение относится к медицинской технике и предназначено для расширения просвета полых органов. The invention relates to medical equipment and is intended to expand the lumen of the hollow organs.

Известен дилататор /1/ в виде спиральной проволочной пружины, имплантируемый в суженный участок полого органа. Недостатками его являются сложность введения, невозможность атравматичной эвакуации, высокая некротизирующая способность. Known dilator / 1 / in the form of a spiral wire spring, implanted in a narrowed area of a hollow organ. Its disadvantages are the complexity of the introduction, the impossibility of atraumatic evacuation, high necrotizing ability.

Известен дилататор /2/, принятый за прототип, в виде замкнутой, свернутой в цилиндр зигзагообразной пружины с регулярным шагом и отогнутыми наружу изгибами обоих концов. Для удобства введения и щадящего воздействия на слизистую оболочку дилатируемого органа устройство выполнено из инкелида титана, обладающего эффектом памяти формы. Недостаток устройства отсутствие возможности атравматичной эвакуации. Known dilator / 2 /, adopted for the prototype, in the form of a closed, rolled into a cylinder zigzag springs with regular steps and bent outward bends of both ends. For ease of administration and gentle effect on the mucous membrane of the dilated organ, the device is made of titanium incelide, which has the shape memory effect. The disadvantage of the device is the lack of the possibility of atraumatic evacuation.

Цель изобретения обеспечение атравматического извлечения дилататора. The purpose of the invention is the provision of atraumatic extraction of the dilator.

Цель достигается тем, что в устройстве для дилатации, содержащем трубчатый транспортер и размещенный внутри него дилататор, выполненный в виде свернутой в цилиндр зигзагообразной проволочной пружины из никелида титана с отогнутыми наружу изгибами на одном конце, внутренняя поверхность рабочего торца транспортера выполнена с коническим расширением, а другой конец дилататора выполнен с изгибами, отогнутыми внутрь, при этом один из изгибов имеет удлинение, равное 0,5- 1,0 диаметра дилататора, и снабжен элементом извлечения дилататора в виде шнура. Диаметр просвета трубчатого транспортера равен диаметру дилататора. Угол отогнутых изгибов дилататора с его осью составляет 30-60o. Дилататор в его средней части имеет бочкообразное расширение.The goal is achieved in that in a dilatation device comprising a tubular conveyor and a dilator located inside it, made in the form of a zigzag titanium nickelide coil spring rolled into a cylinder with bends outwardly bent at one end, the inner surface of the conveyor working end is made with a conical extension, and the other end of the dilator is made with bends bent inward, while one of the bends has an elongation equal to 0.5-1.0 diameter of the dilator, and is equipped with a dilator extraction element in the form cord. The lumen diameter of the tubular conveyor is equal to the diameter of the dilator. The angle of the bent bends of the dilator with its axis is 30-60 o . The dilator in its middle part has a barrel-shaped extension.

На фиг. 1 изображено устройство /до помещения дилататора в просвет трубчатого транспортера/. Устройство содержит три основных узла: дилататор 1, трубчатый транспортер 2 и средство извлечения в виде шнура 3. Дилататор 1 выполнен в виде замкнутой, свернутой в цилиндр зигзагообразной проволочной пружины с изгибами 4 наружу на одном конце, изгибами 5 внутрь на другом конце, и с бочкообразным расширением 6 в средней части. Один из изгибов 6 удлинен на величину 0,5-1 диаметра дилататора. Трубчатый транспортер 2 выполнен с коническим расширением 7 просвета рабочего торца. В состав устройства входит также толкатель 6, вводимый в просвет трубчатого транспортера с противоположного конца. Устройство применяют следующим образом. In FIG. 1 shows the device / before placing the dilator in the lumen of the tubular conveyor /. The device contains three main nodes: dilatator 1, tubular conveyor 2 and extraction means in the form of a cord 3. The dilator 1 is made in the form of a closed, rolled into a cylinder zigzag wire spring with bends 4 outward at one end, bends 5 inward at the other end, and with barrel-shaped extension 6 in the middle. One of the bends 6 is extended by a value of 0.5-1 diameter of the dilator. The tubular conveyor 2 is made with a conical extension 7 of the lumen of the working end. The device also includes a pusher 6, introduced into the lumen of the tubular conveyor from the opposite end. The device is used as follows.

Дилататор 1 в сжатом состоянии помещают в просвет трубчатого транспортера 2, доставляют в суженный участок полого органа и, фиксируя его в пространстве с помощью толкателя 8 и возвращая трубчатый транспортер 2, освобождают. Под действием поперечной упругой силы дилататор, расширяясь, раздвигает стенки патологически суженного участка полого органа. При этом шнур 3, пропущенный последовательно через все изгибы 5 и, в последнюю очередь, через удлиненный изгиб, своими концами выводится наружу. Для удаления дилататора трубчатый транспортер 2 вводят в полый орган до соприкосновения с дилататором 1. С помощью шнура 3 осуществляют сжатие к центру удлиненного изгиба 5, т. е. к центру оси устройства остальных изгибов 5 и втягивают дилататор в просвет трубчатого транспортера 2. Последний извлекают из органа. Коническое расширение 7 рабочего конца транспортера 2, отогнутые под оптимальным углом изгибы 5 другого конца дилататора 1, удлинение одного из них и наличие пропущенного через все изгибы 5 и выведенного через удлиненный изгиб шнура 3 обеспечивают стягивание изгибов при эвакуации дилататора к оси устройства и облегчения втягивания его в просвет транспортера. Бочкообразное расширение 6 обеспечивает увеличение компрессии в средине дилататора и улучшение фиксации его в полом органе для предотвращения миграции. The dilator 1 in a compressed state is placed in the lumen of the tubular conveyor 2, delivered to the narrowed portion of the hollow organ and, fixing it in space with a pusher 8 and returning the tubular conveyor 2, is released. Under the action of transverse elastic force, the dilator, expanding, pushes the walls of the pathologically narrowed portion of the hollow organ. In this case, the cord 3, passed sequentially through all the bends 5 and, lastly, through an elongated bend, is brought out with its ends. To remove the dilator, the tubular conveyor 2 is inserted into the hollow organ until it contacts the dilator 1. Using the cord 3, compress to the center of the elongated bend 5, that is, to the center axis of the device of the remaining bends 5 and pull the dilator into the lumen of the tubular conveyor 2. The latter is removed from the organ. The conical extension 7 of the working end of the conveyor 2, the bends 5 bent at the optimal angle 5 of the other end of the dilator 1, the extension of one of them and the presence of a cord 3 passed through all the bends 5 and extracted through the elongated bend provide retraction of the bends when evacuating the dilator to the device axis and facilitating its retraction into the lumen of the conveyor. The barrel-shaped extension 6 provides increased compression in the middle of the dilator and improved fixation in the hollow organ to prevent migration.

В качестве конкретной проверки работоспособности устройства и достижимости положительного эффекта оно было использовано в клинических условиях при дилатации суженного простатического участка уретры у 6 больных в возрасте от 68 до 78 лет в период подготовки их к операции по поводу адэномы предстательной железы. Успешная ликвидация острой задержки мочеиспускания при более щадящем воздействии на больного по сравнению со стандартной методикой катетеризации свидетельствуют о высокой технической эффективности предлагаемого технического решения задачи. Возможность быстрой и атравматичной замены дилататора открывает возможность длительной дилатации уретры /и других полых органов/ при наличии противопоказаний хирургического вмешательства. As a specific test of the device’s operability and the attainability of a positive effect, it was used in clinical conditions for dilatation of a narrowed prostatic urethra in 6 patients aged 68 to 78 years in preparation for surgery for prostate adenoma. Successful elimination of acute urinary retention with a more gentle effect on the patient compared to the standard catheterization technique indicates the high technical efficiency of the proposed technical solution to the problem. The possibility of quick and atraumatic replacement of the dilator opens up the possibility of prolonged dilatation of the urethra / and other hollow organs / in the presence of contraindications for surgical intervention.

Claims (3)

1. Устройство для дилатации, содержащее трубчатый транспортер и размещенный внутри него дилататор, выполненный в виде свернутой в цилиндр зигзагообразной проволочной пружины из никелида титана с отогнутыми наружу изгибами на одном конце, отличающееся тем, что, с целью атравматичного извлечения дилататора, внутренняя поверхность рабочего торца транспортера выполнена с коническим расширением, а другой конец дилататора выполнен с изгибами, отогнутыми внутрь, при этом один из изгибов имеет удлинение, равное 0,5-1,0 диаметра дилататора и снабжен элементом извлечения дилататора в виде шнура. 1. A dilatation device comprising a tubular conveyor and a dilatator located inside it, made in the form of a zigzag titanium nickelide coil spring rolled into a cylinder with bends outwardly bent at one end, characterized in that, for the purpose of noninvasive extraction of the dilator, the inner surface of the working end the conveyor is made with a conical extension, and the other end of the dilator is made with bends bent inward, while one of the bends has an elongation equal to 0.5-1.0 of the diameter of the dilator and is equipped with It is equipped with a retractor extraction element in the form of a cord. 2. Устройство по п.1, отличающееся тем, что диаметр просвета трубчатого транспортера равен диаметру дилататора в сжатом состоянии. 2. The device according to claim 1, characterized in that the diameter of the lumen of the tubular conveyor is equal to the diameter of the dilator in a compressed state. 3. Устройство по п.1, отличающееся тем, что угол отогнутых изгибов дилататора в его средней части имеет бочкообразное расширение. 3. The device according to claim 1, characterized in that the angle of the bent bends of the dilator in its middle part has a barrel-shaped extension.
SU4751081 1989-10-13 1989-10-13 Dilating device RU2062121C1 (en)

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SU4751081 RU2062121C1 (en) 1989-10-13 1989-10-13 Dilating device

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