NL9401356A - Measuring and setting unit for a neurological drainage system - Google Patents

Abstract

The measuring and setting unit for neurological drainage system is characterized in that the setting methods are implemented mechanically, making use of the law of communicating vessels. A disposable drainage system is placed in the reusable measuring and setting unit and is set relative to an external cavity. The disposable drainage system can be set relative to said cavity at various levels. If the disposable drainage system is set to the height of the cavity, that is defined as the zero point of the pressure level. If at that setting the pressure in the cavity is higher than the pressure in the disposable drainage system, the liquid will overflow from said cavity towards the drainage bag. This will take place precisely until the pressure in the cavity is identical to the pressure in the disposable drainage system. Setting the disposable drainage system higher or lower relative to the external cavity controls the liquid flow. The measuring and setting unit is characterized in that the drainage can be carried out accurately and controllably. <IMAGE>

Description

Short designation:

Measurement and instability for Neurological drainage systems.

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preface

The invention relates to a reusable measuring and adjusting unit for the use of disposable drainage systems. The unit is used with a disposable drainage system. This drainage system can be accurately adjusted on the patient lying in bed by means of the measuring and adjusting unit.

User group

The dination system is used in the neurosurgery department, in patients who have the syndrome "Hydrocephaly".

What is Hydrocephaly

Diagnosis:

Hydrocephaly will be considered when the patient has symptoms indicating that the brain pressure is increased. Symptoms depend on the age of the patient.

In an infant, the cranial seams and fontanelle are not yet closed. Often one sees too rapid growth of the head, a tense fontanelle, dilated veins, irritability, big eyes (the "sunset" sign) and sometimes twitching.

In older children and adults, the skull is closed and cannot expand. The increased pressure, as a result of the expansion of the brain chambers, often gives rise to: headache, nausea and / or vomiting, blurred or double vision, listlessness or even drowsiness. fifhurttHinr

Treatment of Hydrocephaly can only be done surgically. It is based on circumventing the obstacle, by making a direct connection (a shunt) of brain chambers with another body cavity or with the outside world.

Treat iwg technique

In the following, we will focus on the treatment technique using the application of a shunt between the brain chambers and the outside world (drainage bag). Measurement setup

In these patients, it is necessary that the excess, ie too much, present liquid (brain fluid) in the men's room is drained. With drainage it is important that the amount of moisture, measured over time, is controllable and controllable. Controllable means that the speed of drainage can be influenced.

To make this drainage controllable and controllable, the physical law of the communicating vessels is used. The opening in the skull where the catheter goes to the men's room is defined as "zero point". Placing the gardens of the catheter above or below this defined "zero point" creates positive or negative pressure. This influences the outflow rate of the luiquor.

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Measurement and adjustment unit for Neurological drainage systems.

The reusable measuring and adjustment unit, hereinafter referred to as the measuring stand (figure 1), consists of six main parts, each consisting of one or more small parts. These main parts are: 1.1 Bed mounting; 1.2 Support; 1.3 Drainage system holder; 1.4 Flow rate setting; l.S Pressure tmdducer holder; and 1.6 Bag suspension.

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The bed attachment (figure 2) consists of a clamping device that is clamped to a bed via a screw knob (2.1). The round part A is attached to the bed clamp. The round part B can rotate 360 degrees relative to part A (2.2). The rotation is inhibited because the two large surfaces A and B are clamped together. The clamping is effected by the screw that secures the bed attachment to the support. The support is clamped between conductor (2.4) and guide block (2.3). The sliding knob (2.5) blocks the rotation in the desired position. A guide (2.4) is provided on the rotating part B for the support. The guide block (2.3) clamps the support to the bed mounting.

Support.

The support, (figure 3) is placed on the guide direction of the bed mounting (figure 2). The sliding movement of the support passes over the guide (2.4) which is placed in the slot (3.1). This sliding movement can be blocked with the sliding knob (3.2). This blocking is done by pulling the guide block (3.3 and 2.3) into the slot (3.4). The support is then clamped between the guide block (3.3) and the ring (3.5), pressed by the push button (3.2).

The support is fitted on the left with a measuring tape (3.6) that can be read on the front of the support. The graduation is both positive and negative from a fixed "zero point" (3.7). This graduation can be displayed in mm. Hg, or cm... The support can, as previously described, move vertically over a guide (2.4) and 360 turn degrees (2.2). The vertical position of the support is set exactly vertical by the spirit level on top of the support (3.8). On the right side of the support is a flexible "level adjustment" (1.4). The mounting location is at the same height as the "zero point" of the tape measure. The transducer holder (1.5) with the same "zero point" is also located on the right side of the support. At the front of the support there is a guide rod (3.9) along the length of the support, along which the drainage system holder (1.3) moves in vertical direction and is adjusted. can become.

The "level adjustment" on the right side of the support (1.4) is used to set the zero point of the support on the patient.

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The drainage system holder (figure 4) is slidable vertically over the guide rod (3.9). The sliding movement can be locked with a screw knob (4.1).

The disposable dininage system is enclosed in the holder between the top (4.2), bottom plate (4.3) and longitudinally against the rear bars (4.4). The dnination system fits between the space (4.S). This space is kept under pressure by the cylinder (4.6) which is resiliently mounted in the top plate (4.2). This spring cylinder reduces the distance (4.5), so that the navigation system is fixed.

In the bottom plate (4.3) there is a recess in the form of a small chamber (4.10) into which the dination system falls so that it is enclosed. The slot (4.7) in the bottom plate (4.3) serves to pass through the hose connection of the drainage system. The back (4.8) of the bottom and top plate ensures that the drainage system holder cannot rotate on its axis. They guide between the side flanks of the support (3.10).

The pointer (4.9) is the 'zero point * of the navigation system and can be set on the measuring tape (3.6).

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The spirit level adjustment (figure 5) is mounted on the right side of the support (1.4). The place is defined: the cord (5.1) is at the height of the 'zero point * (3.7). The level housing (5.2) consists of two parts: part A and part B. Part A is mounted on the support (figure 1), part B can rotate 30 degrees to the left and 30 degrees to the right relative to part A and be secured with a screw (5.3).

The setting, 30 degrees left and right, is intended to level the * spirit level setting "in one direction, this is only possible if the spirit level (5.4) is in the spirit level housing (5.5). Adjust the" spirit level setting "in the second direction, is done with the spirit level (3.8) on top of the support.

To adjust the support (figure 3) on the patient, mm takes the pointer (5.6) from the holder (5.7). The pointer tip is placed on the patient to be measured. The spirit level (5.4) is pulled out of the recess (5.5) by this movement. The unwound cord (5.1) from the spirit level housing (5.2) is tensioned.

The spirit level is brought to the center of the extended cord. The support (figure 3) can be moved vertically by loosening the screw knob (3.2) over the guide block (3.3) until the level (5.4) is level. The cord (5.1) automatically coils into the spirit level housing (5.2) when the cord (5.1) is allowed to slacken.

The pressure transducer holder (Figure 6) is mounted on the right side of the support (1.5). The location is defined at the "zero point * of the tape measure (3.7). A standardized electronic pressure transducer (Figure 8) can be inserted into the transducer holder. This transducer consists of an electronic sensor (8.1) with a tap piece (8.2). The outflow lumen of the tap (8.3) is at the height of the "zero point" (3.7). The pressure transducer can be slid in and out in the slots (6.1) The bend in the holder (6.2) is intended to allow the drainage system holder (figure 4) to pass freely in the vertical direction along the guide pliers (3.9).

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The suspension (figure 7) is on the right side of the support (1.6). This suspension can be slid vertically (7.1). The suspension arm (7.2) on which the drainage bag hangs can be folded up 90 degrees (7.3) and snaps into the clamp (7.4).

Claims (2)

1. Measuring and setting unit for draining from luquor (cerebrospinal fluid) to a drainage bag, characterized in that this measuring and setting unit is reusable Measuring and adjusting unit according to claim 1, characterized in that the "zero level * of the dispoeaMe diamond system can be easily and precisely determined by means of a flexible roll-in spirit level.