CN2429193Y

CN2429193Y - By-pass valve of cerebrospinal fluid against siphon by posture

Info

Publication number: CN2429193Y
Application number: CN00215493U
Authority: CN
Inventors: 付鹏
Original assignee: CENTRAL HOSPITAL OF TAIAN
Current assignee: CENTRAL HOSPITAL OF TAIAN
Priority date: 2000-07-13
Filing date: 2000-07-13
Publication date: 2001-05-09
Anticipated expiration: 2010-07-13

Abstract

The utility model discloses a flow dividing valve of cerebrospinal fluid against siphon by a posture. On the basis of the original drum type (Heyer-Schulte) flow dividing valve, a small ball with a specific gravity which is greater than one is installed in an inner cavity to form the utility model. The closure and opening of the flow dividing valve of cerebrospinal fluid against siphon by a posture is relative to the posture of a person. When the person lies, the flow dividing valve is open. When the person stands, the flow dividing valve is closed. Consequently, the generation of brain tissue collapse and secondary intracranial hematoma which are caused by excessive drainage can be thoroughly avoided.

Description

The anti-siphon cerebrospinal fluid of position flow divider

This utility model relates to a kind of medical apparatus and instruments, specifically, is a kind of hydrocephalic shunt device of cerebrospinal fluid of treatment that is specifically designed to.

Be used for the treatment of hydrocephalic similar products at present both at home and abroad many kinds such as Holter flow divider, Hakim flow divider, Heyer-Schulte flow divider etc. are arranged, but all there is a common defective in they, are exactly the nonreactive siphonage or have only extremely limited anti-siphonage.Therefore, behind the hydrocephalus patient row by-pass operation of cerebrospinal fluid, severe complications is exactly " cerebral tissue subsides " that causes because of excessive drain, and the secondary intracranial hematoma, and this is a great problem that perplexs this operation for a long time.

This utility model aims to provide a kind of uniform shunt device of cerebrospinal fluid of drain strength of all can realizing under different positions.

This utility model is improved to form on the basis of former drum-type (Heyer-Schulte) flow divider.Former drum-type flow divider profile is an oblate spheroid, by in one at interval (1) its inside is separated out the oblate spheroid inner chamber (2) of a shape similar " discus ", the inlet of flow divider (4) is a circular hole of center, medial wall, arrive valve insertion (2) by 2 circular holes (or crack) (5) on middle interval (1), outlet (6) is a small sircle hole on valve insertion (2) edge.The present invention is installed a proportion additional greater than 1 bead (3) in flow divider inner chamber (2), bead (3) can be sphere, oblate spheroid or elliposoidal, its manufactured materials can be metal, glass, pottery, plastics or rubber-like elastic material, bead (3) can freely roll in the inner chamber (2) of valve, and can form driving fit with outlet (6), can be after bead puts in place with outlet (6) total blockage.During use, flow divider is positioned on patient's one laterocranium bone usually, and patient is being in when standing position, and the outlet of valve (6) is positioned at the minimum point of whole valve.When patient was in horizontal position, because action of gravity, bead (3) was away from flow divider outlet (6), and flow divider is in open state; When patient is in erect position, because flow divider outlet (6) is positioned at minimum point, bead (3) will be blocked outlet (6) automatically under the self gravitation effect, make flow divider become closed condition.

This utility model is owing to utilized the action of gravity of bead in the flow divider, make flow divider open when patient's clinostatism, close during erect position, thereby thoroughly solved owing to existing the strong siphonage that huge pressure differential produces between the ventricles of the brain and shunting position (as the abdominal cavity) and caused this difficult problem of excessive drain, thereby having avoided previously, hydrocephalus patient postoperative is prone to " cerebral tissue subsides ", the formation of complication such as Secondary cases intracranial hematoma.

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the main pseudosection of former drum-type (Heyer-Schulte) flow divider.

Fig. 2 is the side view of former drum-type flow divider, the arrow indication be csf flow to.

Fig. 3 is used for sketch map on the human body for flow divider.

Fig. 4 is a main pseudosection of the present utility model.

Fig. 5 is a side view of the present utility model, and this moment, the patient was for erect position, and outlet is positioned at minimum point, and bead is blocked outlet.

Fig. 6 lies on the back for patient is in or when prostrate, working state figure of the present utility model.

Fig. 7, Fig. 8 are respectively patient when being in the left and right side clinostatism, working state figure of the present utility model, this moment bead away from outlet, flow divider is in open state.

Among the figure: 1. at interval, 2. flow divider inner chamber, 3. bead, 4. flow divider inlet, 5. in aperture or crack at interval, 6. outlet.

This utility model is used for the hydrocephalus patient, compressed globular flow divider is affixed on the laterocranium bone, the minimum point of its outlet (6) when being positioned at erect position, the ventricles of the brain pipe that inlet (4) is located is inserted Intraventricular, and the drainage tube that outlet (6) is located is inserted right atrium or intraperitoneal.Under the flat state that crouches, flow divider outlet (6) is not in the minimum point of horizontal plane, and the interior bead (3) of valve this moment is away from outlet (6), and flow divider is in the nature open state, and cerebrospinal fluid flows to atrium or abdominal cavity through isocon.Because former drum-type valve has certain pressure limiting effect, so can make intracranial pressure maintain normal level; When erect position, flow divider outlet (6) is positioned at minimum point, and bead (3) in the valve will be because the action of gravity meeting will export (6) immediately and block, and flow divider promptly is closed condition, and the cerebrospinal fluid shunting will stop at once.As time goes on, intracranial pressure will raise gradually, but slowly (per hour producing 21 milliliters of cerebrospinal fluid approximately), and when patient bows, bends over or during flat crouching, bead is located to remove by outlet (6) in the valve, flow divider is in open state, and intracranial pressure is reduced gradually.During because of erect position, the time of Body Position Change such as bow, bend over is all of short duration relatively, even pressure differential is bigger, also can not cause excessive drain, and just make intracranial hypertension obtain respite.

Claims

1. the anti-siphon flow divider of position comprises oblate spheroid shell, middle interval, inlet, outlet, it is characterized in that: in flow divider inner chamber 2, have one can free active bead 3.

2. the anti-siphon flow divider of position as claimed in claim 1, it is characterized in that: the proportion of bead 3 is greater than 1.

3. the anti-siphon flow divider of position as claimed in claim 1 or 2 is characterized in that: the shape of bead 3 can be sphere, oblate spheroid or elliposoidal.

4. the anti-siphon flow divider of position as claimed in claim 3 is characterized in that: bead 3 can form driving fit with outlet 6, can be with outlet 6 total blockages after bead puts in place.

5. the anti-siphon flow divider of position as claimed in claim 3 is characterized in that: the manufactured materials of bead 3 can be metal, glass, pottery or plastics.

6. the anti-siphon flow divider of position as claimed in claim 3 is characterized in that: the manufactured materials of bead 3 can be a rubber-like elastic material.