Device for dewatering arachnoidal liquor cysts

 

(57) Abstract:

The invention relates to medicine, namely to neurosurgery. The technical result of the invention is to provide non-traumatic surgical intervention in the field of cysts, providing a reliable drainage of the contents of the cyst in the direction of healthy the subarachnoid spaces of the brain and in podporujici space over the area of the cyst, which also happens resorption of CSF. The catheter is made in the form of a U-shaped bracket made of metal with shape memory, the parallel legs of which are bent opposite inside without clamping, with the bracket in cross section has the shape of a trough, open side facing outwards. 3 Il.

The invention relates to medicine, namely to neurosurgery.

Post-traumatic cyst of the brain are formed in different periods of time (months-years) after suffering a traumatic brain injury. Localization distinguish subarachnoid and intracerebral. First observed in children, second in adults. Post-traumatic subarachnoid CSF cysts are the result of subarachnoid haemorrhage, adhesive leptomeningitis; intracerebral develop PR="ptx2">

Despite the progress made in neuropathology, radiology and neurosurgery problem remains up to date. Regardless of the cause of occurrence of cysts in the brain (congenital or acquired) in patients suffering from this pathology, there are persistent paresis, paralysis, epilepsy, disorders of psycho-emotional sphere.

A brain cyst, available as a kind of volumetric education in the skull cavity, leads to disruption of liquorices in the field of cysts, and in case of increase in size creates additional compression and disruption of blood supply to the surrounding areas of the brain, which in turn leads to disruption and progression of lost functions.

In neurosurgical practice at the present time there are many different methods and their modifications in the treatment of cysts of the brain, but they are not always universal and highly effective.

A device for the production of cerebral spinal fluid.

Device that communicates with the catheter includes an elongated sleeve having a through hole lines up with the valve of the catheter. The sleeve is attached to the check valve and the attached loop, which serves as a support hinge stabilizing valve when the change of pressure and contributing to the opening of the exhaust valve at a certain level of fluid pressure in the valve and closing the valve when the fluid pressure falls below this level /USA. Patent N 4215695, publ. August 5, 1980, M CL A 61 M 1/00, 27/00/.

The disadvantage of this device is that the commitment of the cerebrospinal fluid there is need for additional surgical intervention diversion of fluid in the abdominal cavity or into the right atrium of the heart.

A device for treatment of hydrocephalus with improved catheter.

The device is intended for the treatment of hydrocephalus, in particular, caused by the block of liquor-conducting paths, using intracranial catheter attached to a tube that allows you to divert cerebrospinal fluid from the ventricles of the brain into the abdominal cavity or into the right atrium of the heart. At a certain distance from the free end of the catheter has a flange that allows you to set it at the level of the Dura. Near the flange from the side of the free end is provided by numerous intermediate holes, prednaznachennnoj, oblong slots with rounded edges /France, application N 2539298, publ. 20.07.84,, M CL A 61 M 1/00/.

The disadvantage of this device is that the lead and holding the distal end of the drainage involves opening the abdominal cavity, or the carrying out of drainage through the facial vein into the right atrium of the heart.

Closest to the claimed is a device containing a curved catheter, clamp, needle and rod.

When catheterization of the ventricles in the clip pre-attached catheter in the desired position, followed by the introduction into the cavity of the ventricle of the brain (A. S. N 1398877, M. CL. A 61 M 27/00 "Method of introducing a catheter into the cavity", B. I. N 20, 1988).

The disadvantage of this device is that when the puncture of the ventricle of the brain will still be possible trauma of the brain indicated by the needle with mandrin.

The objective of the invention is to create a device for dewatering arachnoidal liquor cysts of the brain, which would retraumatize conduct surgery in the field of cysts, providing a reliable drainage of the contents of the cyst in the direction of healthy the subarachnoid spaces Golo is

This object is achieved in that the catheter is made in the form of a U-shaped bracket made of metal with shape memory, the parallel legs of which are bent opposite inside without clamping, with the bracket in cross section has the shape of a trough, open side facing outwards.

The novelty of device:

1. The device is made in the form of a U-shaped staples with parallel legs, promotes surgical intervention directly and only in the area of the cyst.

2. The bracket has a cross section the shape of a trench, facing outwards, helps to create an outflow of cerebrospinal fluid from the cavity of the cyst in the direction of healthy the subarachnoid spaces of the brain and in podporujici space.

3. Performing a bracket made of metal with shape memory with the tabs-the tabs on the ends of the parallel legs helps to fix all staples in the bone between the two holes in the bones made directly above the cyst.

The invention is illustrated by drawings, where Fig. 1 shows a General view of the bracket of Fig. 2 shows a cross-section of the bracket; Fig. 3 shows a diagram of the installation brackets.

Device for dewatering arachnoidal liquor cysts of the legs (2) brackets have a size of 20 mm, at the ends are not closed and have the tabs-the tabs (3) the type of hooks over the edge of the bone, the size of 2 mm, which closed opposite, inside not being closed. Device around the perimeter has a thickness of 1 mm and made in the form of troughs with the tabs on the edges of a width of 1 mm and a height of the edge of the trench 3 mm Width of the entire bracket 5 mm, and the width of the inner part of the trench 3 mm Bracket all the way to the projections of the tabs has the shape of a trough, open side facing outwards.

The device operates as follows.

In operating to produce a linear incision over the area of the cyst. Impose Presevo hole on the bottom edge of the cyst. Then make the opening, emptying and ventriculoscopy cavity of the cyst by conducting ventriculomegaly perforation of the cyst wall in a radial direction towards a healthy subarachnoid spaces of the brain. Along the created message in the radial direction, some distance 2 cm from the edge trepanation holes, using a drill with a diameter of 5 mm is applied an extra hole. To prevent possible damage to brain drill last recorded clip-limiter used to cranioplastic. U-shaped bracket (1) in the form of a gutter outside the op what oterom possible extension brackets for legs with clamps. In a state where the legs of the bracket divorced, hook one leg is put in the cavity of the cyst under the subarachnoid space and the tab-holder (3) is put in an extra hole of a bone.

The temperature of human tissue and the environment, the reverse bending of a U-shaped bracket (1) to its original condition, with parallel leg bracket (2) falls into the cavity of the cyst inside of the formed bone between the holes in the bone, and the second parallel leg bracket (2) with the tab-holder (3) sets and fixed in the hole of the bone on the outside, while Galabova part of the bone facing outwards.

Bracket (1) is firmly fixed between the two holes in the bone.

The arrows show the direction of the outflow of cerebrospinal fluid from the cyst.

Installation of the fixed bracket, made of metal with shape memory, creates an outflow of cerebrospinal fluid from the cavity of the cyst in the direction of healthy unchanged subarachnoid spaces of the brain and in the direction in podporujici space, where is the absorption of cerebrospinal fluid.

Device for dewatering arachnoidal liquor cysts, made in the form of a curved cut the legs of which are bent opposite inside without clamping, when this bracket in cross section has the shape of a trough, open side facing outwards.

 

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