Device for the treatment of hydrocephalus
First Claim
1. A cerebrospinal fluid shunt system comprising:
- brain ventricle catheter to insert into the brain ventricle so to drain cerebrospinal fluid from the brain ventricle;
sinus sagittalis catheter to insert into the sinus sagittalis for feeding the cerebrospinal fluid into the sinus sagittalis;
shunt main body connected at one location thereof to the brain ventricle catheter and at another location thereof to the sinus sagittalis catheter to provide fluidic communication between the brain ventricle catheter and the sinus sagittalis catheter, and flow restricting passage defined within the shunt main body to maintain a substantially constant resistance to flow of the shunt system within the range of 8-12 mmHg/ml/min.
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Abstract
A cerebrospinal fluid shunt system comprises a brain ventricular catheter for insertion into the brain ventricle so as to drain cerebrospinal fluid from the brain ventricle. The system also comprises a sinus sagittalis catheter for insertion into the sinus sagittalis for feeding the cerebrospinal fluid into sinus sagittalis. A shunt main body is connected at one end thereof to the brain ventricle catheter and at another end thereof to the sinus sagittalis catheter. The shunt main body can provide fluidic communication between the brain ventricle catheter and the sinus sagittalis catheter. The system further comprises a tubular flow passage restricting member defined within the shunt main body. The tubular flow passage restricting member defines a resistance to flow of 8-12 mm Hg/ml/min.
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Citations
31 Claims
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1. A cerebrospinal fluid shunt system comprising:
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brain ventricle catheter to insert into the brain ventricle so to drain cerebrospinal fluid from the brain ventricle;
sinus sagittalis catheter to insert into the sinus sagittalis for feeding the cerebrospinal fluid into the sinus sagittalis;
shunt main body connected at one location thereof to the brain ventricle catheter and at another location thereof to the sinus sagittalis catheter to provide fluidic communication between the brain ventricle catheter and the sinus sagittalis catheter, and flow restricting passage defined within the shunt main body to maintain a substantially constant resistance to flow of the shunt system within the range of 8-12 mmHg/ml/min. - View Dependent Claims (2, 3, 4, 6, 7, 19, 20, 25, 26)
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5. A cerebrospinal fluid shunt system comprising:
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a brain ventricle catheter sized to insert into a brain ventricle of a person so as to drain cerebrospinal fluid from the brain ventricle;
a sinus sagittalis catheter sized to insert into a sinus sagittalis of a person to feed cerebrospinal fluid into the sinus sagittalis;
a main body connected at one location thereon to the brain ventricle catheter and at another location thereon to the sinus sagittalis catheter to provide fluidic communication between the brain ventricle catheter and the sinus sagittalis catheter; and
a flow restricting passage structure defined within the main body to maintain a substantially constant resistance to flow of the shunt system within the range of 8-12 mmHg/ml/min independent of an orientation of the main body. - View Dependent Claims (8, 9, 10, 21, 22, 27, 28)
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11. A cerebrospinal fluid shunt system comprising:
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means for insertion into the brain ventricle so as to drain cerebrospinal fluid from the brain ventricle;
means for insertion into the sinus sagittalis for feeding the cerebrospinal fluid into the sinus sagittalis;
means for providing fluidic communication between the means for insertion into the brain ventricle and the means for insertion into the sinus sagittalis, the means for providing fluidic communication connected at one location thereof to the means for insertion into the brain ventricle and at another locations thereof to the means for insertion into the sinus sagittalis; and
means, defined within the means for providing fluidic communication, for maintaining a substantially constant resistance to flow of the shunt system within the range of 8-12 mmHg/ml/min. - View Dependent Claims (12, 13, 14, 15, 23, 24, 29, 30)
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16. A cerebrospinal fluid shunt system comprising:
a shunt body sized to extend between a brain ventricle of a person and a sinus sagittalis of the person to provide fluidic communication between the brain ventricle and the sinus sagittalis, the shunt body having a flow restricting structure defined therein to maintain a substantially constant resistance to flow of the shunt system within the range of 8-12 mmHg/ml/min independent of an orientation of the shunt body. - View Dependent Claims (17, 18)
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31. A cerebrospinal fluid shunt system in situ, comprising:
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a brain ventricle catheter having an end thereof inserted into a brain ventricle of a patient, so as to drain cerebrospinal fluid from the brain ventricle;
a sinus sagittalis catheter having an end thereof inserted into the sinus sagittalis of the patient for feeding of the cerebrospinal fluid from the brain ventricle into the sinus sagittalis;
a shunt main body connected at one location thereof to the brain ventricle catheter and at another location thereof to the sinus sagittalis catheter to provide fluidic communication between the brain ventricle catheter and the sinus sagittalis catheter; and
a flow restricting passage defined within the shunt main body to maintain a substantially constant resistance to flow from the brain ventricle to the sinus sagittalis within the range of 8-12 mmHg/ml/min.
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Specification