Hydrocephalus diverter valve and positioning tool

Abstract

The invention discloses a hydrocephalus diverter valve and a positioning tool. Relates to the field of medical instruments. Meshing locking or unlocking of action components can be reliably achieved in the adjusting process, and maloperation is avoided. The valve comprises a valve body and a valve cover, an inlet and an outlet are formed in the two ends of the valve body respectively, and a valve port ball is arranged in the inlet; a pressure adjusting device is arranged in the valve body; the pressure adjusting device comprises a rotor and a bow spring assembly. The rotor is movably pivoted on the central rotating pin, and the degree of freedom of rotation around the central rotating pin and the degree of freedom of axial movement are reserved; the top surface of the rotor is provided with a cam table, the bottom surface of the rotor is provided with a pair of fan-shaped bosses, the bottom surface of each fan-shaped boss is provided with a hemispherical ball bulge, and the hemispherical ball bulges are matched with the circle of indexing positioning groove group; and a pressure spring is arranged on the top surface of the rotor. Indexing meshing locking measures are innovatively arranged in the valve body. In the normal use process, the device can be reliably kept in a set state, and misoperation is avoided and completely eradicated. And during adjustment, unlocking of the action part can be reliably realized.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a hydrocephalus shunt valve, a pressure reading tool for reading the working pressure of the hydrocephalus shunt valve, and a tool for adjusting the pressure of the hydrocephalus shunt valve. Background Art

[0002] Hydrocephalus is characterized by excessive secretion of cerebro-spinal fluid (CSF), insufficient reabsorption, or mechanical obstruction of the pathway. Most of the time, hydrocephalus is caused by a blockage in the CSF absorption site, resulting in a state of excessive accumulation in the ventricular system, which causes the patient to experience neurological or movement disorders. If untreated, this blockage can lead to an enlarged head in infants whose skull sutures have not yet fused, followed by brain damage. In adults, due to the rigidity of the skull, the pressure on the brain under the pressure of the cerebrospinal fluid increases, and symptoms of headache, gait disorders, and dementia have been reported. This obstructed circulation is usually treated with ventriculoperitoneal shunt surgery, which requires the use of a hydrocephalus shunt valve.

[0003] Ventriculoperitoneal shunt surgery usually involves inserting a catheter into the ventricles through a hole in the skull. The catheter is connected to a hydrocephalus shunt valve that is inserted under the scalp. The hydrocephalus shunt valve is connected to another catheter under the skin that leads to the peritoneum. Once implanted, the hydrocephalus shunt valve regulates the pressure within the patient's ventricles, and the opening pressure of the shunt valve can be adjusted non-invasively after surgery to accommodate normal pressure changes in the ventricles.

[0004] The hydrocephalus shunt valve of the prior art mainly has a rotor with a magnetic element in the shunt valve, and the valve pressure is adjusted by rotating the rotor with the magnetic element. By using a regulating device equipped with a magnetic element, the magnetic coupling between the magnetic element of the rotor in the valve and the magnetic element of the regulating device can be used to non-invasively adjust the opening pressure of the shunt valve through the patient's skin. However, the possible malfunction during the non-regulation stage poses a major safety hazard.

[0005] Therefore, how to improve the hydrocephalus shunt valve in the prior art so that it can reliably maintain the adjusted state in the non-adjustment stage and avoid and eliminate the occurrence of malfunction has become a technical problem that needs to be solved urgently in this field. Summary of the invention

[0006] In view of the above technical problems, the present invention proposes a hydrocephalus shunt valve and a pressure tool which can reliably realize the engagement locking or unlocking of the action parts during the adjustment process, thereby avoiding malfunction.

[0007] A hydrocephalus shunt valve of the present invention comprises a valve body and a valve cover, wherein the two ends of the valve body are respectively provided with an inlet and an outlet, and a valve port ball is arranged in the inlet; a center rotating pin is arranged at the center position of the bottom surface of the valve body, a circle of indexing positioning groove group is arranged at the periphery of the center rotating pin, and a bow spring assembly rotating pin is also arranged at the edge of the bottom surface of the valve body; A pressure regulating device is also provided in the valve body; the pressure regulating device comprises: a rotor and a bow spring assembly; The rotor is movably pivoted on the central rotating pin, retaining the freedom of rotation around the central rotating pin and the freedom of axial movement; The top surface of the rotor is provided with a cam platform, the bottom surface of the rotor is provided with a pair of fan-shaped bosses, the bottom surface of the fan-shaped bosses is provided with a hemispherical spherical convexity, and the hemispherical spherical convexity is adapted to a circle of the indexing positioning groove group; The bow spring assembly comprises: a rotating sleeve, a bow spring leaf and a rigid rod, wherein the bow spring leaf and the rigid rod are fixedly connected to the sleeve body of the rotating sleeve, the distal end of the rigid rod abuts against the cam surface of the cam platform, and the distal end of the bow spring leaf abuts against the valve port ball; A compression spring is arranged on the top surface of the rotor.

[0008] Furthermore, a rotor bottom cavity is provided on the bottom surface of the rotor.

[0009] Furthermore, a positioning column is provided in the cavity at the bottom of the rotor and on the inner side of the fan-shaped boss.

[0010] Furthermore, a pair of limiting posts for limiting the rotation range of the rotor with the positioning posts within 0-270° are provided on the bottom surface of the valve body.

[0011] Furthermore, a magnet receiving groove is provided on the upper surface of the rotor, and a permanent magnet 1 is provided in the magnet receiving groove.

[0012] Furthermore, a circle of developing material accommodating grooves is also provided on the periphery of the graduation positioning groove group.

[0013] Furthermore, the indexing positioning groove group has an annular wave surface, and a ball socket adapted to the hemispherical convex ball is opened at the center of the wave trough.

[0014] A positioning tool for a hydrocephalus shunt valve of the present invention comprises a cylinder, a box, a magnetic needle, a main shaft and a transparent cover. The box is offset on the outside of the cylinder, the main shaft is arranged on the bottom surface of the box, the magnetic needle is movably connected to the main shaft, and the transparent cover covers the box; an indicator mark is provided on the edge of the cylinder mouth on the top surface of the cylinder.

[0015] Furthermore, it also includes a pressure reading tool, which includes a round box, a rotating pin, two magnetic needles and two transparent covers; a rotating pin is fixedly provided inside the round box, the two magnetic needles are movably connected to the rotating pin, and the two transparent covers are arranged at the top of the round box; the round box has a lower step circle, and the lower step circle is adapted to the inner cylinder mouth of the cylinder.

[0016] Furthermore, it also includes a pressure regulating tool, which includes: an regulating tool housing, an electromagnet bracket, an regulating tool electromagnet, an regulating tool end cover and an regulating tool pointer, the electromagnet bracket is fixedly provided in the inner cavity of the regulating tool housing, the electromagnet is fixedly provided on the electromagnet bracket, the regulating tool end cover is provided on the regulating tool housing, and the regulating tool pointer is provided on the upper surface of the regulating tool end cover.

[0017] The present invention innovatively sets a graduated meshing locking measure in the valve body, which relies on the meshing and non-meshing states of the hemispherical concave holes and hemispherical convex balls respectively set on the valve body and the rotor to lock and unlock, which can prevent the rotor from malfunctioning in the non-adjustment stage; in addition, the hemispherical concave holes on the valve body are set in the wave-shaped grooves. In the adjustment stage, even if the rotor is not accurately rotated to the trough position, it can rely on its own gravity and spring pressure to slide to the trough position and mesh with the valve body. In addition, in order to realize the use of the diverter valve of the present invention, this case also adaptively proposes specialized tools for positioning, reading and pressure adjustment.

[0018] The present invention can reliably maintain the setting state during normal use, avoiding and preventing the occurrence of erroneous actions. During adjustment, the action parts can be reliably unlocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 is a three-dimensional exploded view of the hydrocephalus shunt valve of the present invention, Figure 2 is a schematic diagram of the structure of the hydrocephalus shunt valve of the present invention, Figure 3 yes Figure 2 A top view of Figure 4 It is a three-dimensional schematic diagram of the rotor in the present invention Figure 1 , Figure 5 It is a three-dimensional schematic diagram of the rotor in the present invention Figure 2 , Figure 6 It is a three-dimensional schematic diagram of the valve body in the present invention Figure 1 , Figure 7 The structure of the valve body in the present invention is schematically shown in FIG. Figure 2 , Figure 8 yes Figure 7 Middle AA section view, Fig. 9 is a schematic diagram of the meshing state between the rotor and the valve body in the present invention, Fig.10 is a schematic diagram of the disengagement state between the rotor and the valve body in the present invention, Fig.11 is a schematic diagram of the structure of the positioning tool in the present invention, Fig.12 yes Fig.11 A top view of Fig.13 is a three-dimensional exploded view of the reading tool of the present invention, Fig.14 is a schematic diagram of the structure of the reading tool in the present invention, Fig.15 is a schematic diagram of the combination of the reading tool and the positioning tool in the present invention, Fig.16 is a schematic diagram of the structure of the pressure regulating tool in the present invention, Fig.17 yes Fig.16 A top view of In the figure: 1-inlet, 2-valve port ball, 3-bow spring assembly, 31-rotating sleeve, 32-bow reed, 33-rigid rod, 4-rotor, 41-cam platform, 42-magnet accommodating groove, 43-side groove, 44-sector boss, 441-hemispherical ball convex, 45-rotor bottom cavity, 46-positioning column, 5-spring, 6-valve cover, 7-outlet, 8-valve body, 81-gradient positioning groove group, 82-bow spring assembly rotating pin, 83-center rotating pin, 84-limiting column, 85-developing material accommodating groove, 9-permanent magnet 1, 10-permanent magnet 2, 11 is a positioning tool, 1101 is a cylinder, 1102 is a box body, 1103 is a magnetic needle 1, 1104 is a main shaft, 1105 is a transparent cover 1, 12 is a pressure regulating tool, 1201 is a regulating tool housing, 1202 is an electromagnet bracket, 1203 is an electromagnet, 1204 is an regulating tool end cover, 12041 is an regulating tool indicator mark, 13 is a pressure reading tool, 1301 is a round box, 1302 is a rotating pin, 1303 is a second magnetic needle, and 1304 is a second transparent cover. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-17 The technical solution of the present invention is further illustrated by specific implementation methods.

[0022] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0023] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0024] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] like Figure 1-8 As shown, the present invention includes a valve body 8 and a valve cover 6, wherein an inlet 1 and an outlet 7 are respectively provided at both ends of the valve body 8, and a valve port ball 2 is provided in the inlet 1; a center rotation pin 83 is provided at the center position of the bottom surface of the valve body 8, a circle of indexing positioning groove group 81 is provided on the periphery of the center rotation pin 83, and a bow spring assembly rotation pin 82 is also provided on the edge of the bottom surface of the valve body 8.

[0026] A pressure regulating device is also provided in the valve body 8 ; the pressure regulating device comprises: a rotor 4 and a bow spring assembly 3 .

[0027] The rotor 4 is movably pivoted on the central rotating pin 83, and retains the freedom of rotation around the central rotating pin 83 and the freedom of axial movement.

[0028] The top surface of the rotor 4 is provided with a cam platform 41 , the bottom surface of the rotor 4 is provided with a pair of fan-shaped bosses 44 , and the bottom surface of the fan-shaped bosses 44 is provided with a hemispherical ball protrusion 441 , which is adapted to a circle of indexing positioning groove group 81 .

[0029] The bow spring assembly 3 includes: a rotating sleeve 31, a bow spring leaf 32 and a rigid rod 33. The bow spring leaf 32 and the rigid rod 33 are fixedly connected to the sleeve body of the rotating sleeve 31. The distal end of the rigid rod 33 abuts against the cam surface of the cam platform 41, and the distal end of the bow spring leaf 32 abuts against the valve port ball 2.

[0030] A compression spring 5 is provided on the top surface of the rotor 4 for applying downward pressure to the rotor 4 to ensure that the hemispherical ball protrusion 44 is engaged in the indexing positioning groove group 81. The bow spring assembly 3 and the rotor 4 are configured to allow the opening pressure of the hydrocephalus shunt valve to be adjusted in stages within the range of 20 to 220 mmH2O.

[0031] Furthermore, a rotor bottom cavity 45 is provided on the bottom surface of the rotor 4. The cavity is formed after a pair of fan-shaped bosses 44 abut against the bottom surface of the valve body 8, and its function is to retain the flow of the liquid medium. A side groove 43 is provided on the outer side of the fan-shaped boss 44 to confirm the rotor position during magnetic imaging.

[0032] Furthermore, a positioning column 46 is provided in the cavity 45 at the bottom of the rotor and inside the sector-shaped boss 44. A pair of limiting columns 84 are provided on the bottom surface of the valve body 8 for limiting the rotation range of the rotor 4 with the positioning column 46 to 0-280 degrees.

[0033] Furthermore, a magnet receiving groove 42 is provided on the upper surface of the rotor 4, and a permanent magnet 9 is provided in the magnet receiving groove 42. The magnet receiving groove 42 corresponds to the position of the hemispherical ball protrusion 441, which is more convenient for adjustment and identification, and also fully utilizes the thickness of the fan-shaped boss.

[0034] Furthermore, a circle of developing material accommodating grooves 85 is also provided around the periphery of the indexing positioning groove group 81. The developing material is placed therein so as to clearly show the position of the shunt valve during inspection after being placed into the skull.

[0035] Furthermore, the indexing positioning groove group 81 has an annular wave surface, and a ball socket adapted to the hemispherical ball protrusion 441 is opened at the center of the wave trough. The height difference between the wave crest and the wave trough of the wave-shaped groove does not exceed half of the depth of the hemispherical concave hole; and the various sections of the wave-shaped groove have a smooth transition, which is beneficial to the movement and positioning of the hemispherical ball protrusion when the rotor rotates.

[0036] like Fig. 9As shown, under the pressure of the spring 5, the rotor 4 is limited in rotation by the hemispherical convex 441 on the rotor 4 engaging with the indexing positioning groove group 81 on the valve body 8. The hemispherical protrusion on the rotor engages with the hemispherical concave hole on the valve body to lock the rotor to prevent it from malfunctioning in the non-adjustment stage. And the indexing positioning grooves (that is, when the protrusions are in the positioning grooves at different angles) can achieve the adjustment of different pressures.

[0037] like Fig.10 As shown, when the opening pressure of the hydrocephalus shunt valve needs to be adjusted, under the coupling effect of the permanent magnet 9 and the external magnetic pole, the magnetic force drives the rotor 4 to rotate, and the hemispherical ball protrusion 441 on the rotor 4 moves along the curved surface, overcoming the pressure of the spring 5 to push the rotor 4 upward along the axis, and the hemispherical ball protrusion 441 is disengaged from the indexing positioning groove group 81.

[0038] Even when the rotor 4 rotates over a crest under the action of magnetic force but does not rotate precisely to the trough position adjacent to the crest, the rotor 4 can slide to the trough position under the elastic force of the spring 5 and its own gravity, and engage with the recessed holes on the indexing positioning groove group 81, thereby locking the rotor 4.

[0039] like Figure 11-17 As shown, a positioning tool for a hydrocephalus shunt valve of the present invention comprises a cylinder 1101, a box body 1102, a magnetic needle 1103, a main shaft 1104 and a transparent cover 1105. The box body 1102 is offset on the outside of the cylinder 1101, and the two are connected as one. The main shaft 1104 is arranged on the inner bottom surface of the box body 1102, the magnetic needle 1103 is movably connected to the main shaft 1104, and the transparent cover 1105 covers the box body 1102; the edge of the cylinder mouth on the top surface of the cylinder 1101 is provided with an indicator mark. When positioning: the shunt valve is implanted under the patient's skin, and the skin around the skull is relatively thin, and the doctor can preliminarily determine the position of the valve by touch. Then, rotate the positioning tool, and once the magnetic needle 1103 of the positioning tool is consistent with the direction of the arrow in the indicator mark, it means that the positioning tool has been accurately positioned. In order to ensure the working efficiency of the magnetic needle 1103 in the positioning tool, a permanent magnet 2 10 is also provided on the inlet 1 of the diverter valve to determine the position of the valve and the inlet.

[0040] In order to read the pressure, a pressure reading tool 13 is also included, which includes a round box 1301, a rotating pin 1302, a second magnetic needle 1303 and a second transparent cover 1304; the rotating pin 1302 is fixedly arranged in the round box 1301, the second magnetic needle 1303 is movably connected to the rotating pin 1302, and the second transparent cover 1304 is arranged at the top of the round box; the round box has a lower step circle, and the lower step circle is adapted to the inner cylinder mouth of the cylinder 1101. The purpose of the pressure reading tool is to display the current opening pressure of the valve and check the pressure setting after the pressure adjustment. When in use, a positioning tool is required. After the positioning tool is positioned at the valve position, the pressure reading tool 13 is placed in the cylinder 1101 of the positioning tool, and then the pressure reading tool 13 is manually rotated, and the magnetic needle 1303 is observed until the pointer stops moving. The magnetic needle 1303 interacts with the magnetic pole in the diverter valve, and the N pole of the magnetic needle 1303 points to a certain value in the indication mark of the positioning tool, which indicates the pressure level of the diverter valve at this time.

[0041] In order to adjust the pressure, a pressure adjustment tool 12 is also included, which includes: an adjustment tool housing 1201, an electromagnet bracket 1202, an adjustment tool electromagnet 1203, an adjustment tool end cover 1204 and an adjustment tool pointer 1205. The inner cavity of the adjustment tool housing 1201 is fixed with an electromagnet bracket 1202, the electromagnet 1203 is fixedly provided on the electromagnet bracket 1202, the adjustment tool housing 1201 is provided with an adjustment tool end cover 1204, and the upper surface of the adjustment tool end cover 1204 is provided with an adjustment tool pointer 1205. The pressure adjustment tool 12 interacts with the permanent magnet 9 fixed on the diverter valve rotor 4, so that the diverter valve opening pressure changes.

[0042] It should be noted that the above specific implementations are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art should understand that various modifications, equivalent substitutions, changes, etc. can be made to the present invention based on the technical content disclosed in this application document. However, as long as these changes do not deviate from the spirit of the present invention, they should be within the scope of protection of the present invention. In addition, some terms used in the specification and claims of this application are not restrictive, but are only for the convenience of description.

Claims

1. A hydrocephalus shunt valve, comprising a valve body (8) and a valve cover (6), wherein the valve body (8) is provided with an inlet (1) and an outlet (7) at both ends thereof, and a valve ball (2) is provided in the inlet (1); the characteristics are as follows: A central rotating pin (83) is provided at the center of the bottom surface of the valve body (8), a circle of indexing positioning groove groups (81) are provided on the periphery of the central rotating pin (83), and a bow-shaped spring assembly rotating pin (82) is also provided on the edge of the bottom surface of the valve body (8); A pressure regulating device is also provided in the valve body (8); the pressure regulating device comprises: a rotor (4) and a bow spring assembly (3); The rotor (4) is movably pivoted on the central rotating pin (83), retaining the freedom of rotation around the central rotating pin (83) and the freedom of axial movement; The top surface of the rotor (4) is provided with a cam platform (41), the bottom surface of the rotor (4) is provided with a pair of fan-shaped bosses (44), the bottom surface of the fan-shaped bosses (44) is provided with a hemispherical spherical protrusion (441), and the hemispherical spherical protrusion (441) is adapted to a circle of the indexing positioning groove group (81); The bow-shaped spring assembly (3) comprises: a rotating sleeve (31), a bow-shaped spring leaf (32) and a rigid rod (33); the bow-shaped spring leaf (32) and the rigid rod (33) are fixedly connected to the sleeve body of the rotating sleeve (31); the distal end of the rigid rod (33) abuts against the cam surface of the cam platform (41); and the distal end of the bow-shaped spring leaf (32) abuts against the valve port ball (2); A compression spring (5) is provided on the top surface of the rotor (4).

2. A hydrocephalus shunt valve according to claim 1, characterized in that: A rotor bottom cavity (45) is provided on the bottom surface of the rotor (4).

3. A hydrocephalus shunt valve according to claim 2, characterized in that: A positioning column (46) is provided in the cavity (45) at the bottom of the rotor and on the inner side of the fan-shaped boss (44).

4. A hydrocephalus shunt valve according to claim 3, characterized in that: A pair of limit posts (84) are provided on the bottom surface of the valve body (8) for limiting the rotation range of the rotor (4) with the positioning posts (46) to 0-270 degrees.

5. The hydrocephalus shunt valve according to claim 1, characterized in that: The upper surface of the rotor (4) is provided with a magnet accommodating groove (42), and a permanent magnet 1 (9) is arranged in the magnet accommodating groove (42).

6. The hydrocephalus shunt valve according to claim 1, characterized in that: A circle of developing material accommodating grooves (85) is also provided on the periphery of the indexing positioning groove group (81).

7. The hydrocephalus shunt valve according to claim 1, characterized in that: The indexing positioning groove group (81) has an annular wave surface, and a ball socket adapted to the hemispherical spherical protrusion (441) is provided at the center of the wave trough.

8. A positioning tool for a hydrocephalus shunt valve according to any one of claims 1 to 7, characterized in that: The positioning tool comprises a cylinder (1101), a box body (1102), a magnetic needle (1103), a main shaft (1104) and a transparent cover (1105); the box body (1102) is offset on the outside of the cylinder (1101); the main shaft (1104) is arranged on the inner bottom surface of the box body (1102); the magnetic needle (1103) is movably connected to the main shaft (1104); and the transparent cover (1105) covers the box body (1102); an indicator mark is provided on the edge of the top surface of the cylinder (1101).

9. The positioning tool for a hydrocephalus shunt valve according to claim 8, characterized in that: The pressure reading tool (13) further comprises a round box (1301), a rotating pin (1302), a second magnetic needle (1303) and a second transparent cover (1304); the rotating pin (1302) is fixedly provided inside the round box (1301), the second magnetic needle (1303) is movably connected to the rotating pin (1302), and the second transparent cover (1304) is arranged at the top of the round box; the round box has a lower step circle, and the lower step circle is adapted to the inner cylinder mouth of the cylinder (1101).

10. The positioning tool for a hydrocephalus shunt valve according to claim 8, characterized in that: The pressure regulating tool (12) is also included. The pressure regulating tool (12) comprises: an regulating tool housing (1201), an electromagnet support (1202), an regulating tool electromagnet (1203), an regulating tool end cover (1204) and an regulating tool pointer (1205). The electromagnet support (1202) is fixedly provided in the inner cavity of the regulating tool housing (1201), the electromagnet (1203) is fixedly provided on the electromagnet support (1202), the regulating tool end cover (1204) is provided on the regulating tool housing (1201), and the regulating tool pointer (1205) is provided on the upper surface of the regulating tool end cover (1204).

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