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US 12,527,943 B2Granted
System and method for a valve
AssigneeMedtronic PS Medical, Inc.
InventorsCong Fan, Yong Feng, Jeff William Bertrand, Lori C. Speckman, Lawrence L. Hampton, Zhihua Luo
Life of this patent
Estimating the term…
Abstract
Disclosed is a system including a flow regulating system. The flow regulating system may assist in ensuring a selected pressure within an inlet volume. The flow regulator may be included in a shunt assembly.
Claims16
A shunt system configured to be placed in a subject, comprising:
- an inlet having an inlet connection portion and a bore therethrough;
- an outlet having an outlet connection portion and a bore therethrough, at least one of the bore through the inlet or the bore through the outlet extending along a flow axis;
- a reservoir in a fluid flow path from the inlet to the outlet, wherein a fluid is operable to flow into the inlet, through the reservoir, and out the outlet;
- and
- a valve mechanism positioned between the inlet and the outlet to control a flow from the inlet to the outlet at a selected threshold pressure, wherein the valve mechanism comprises:
- a first adjustment member having a valve seal portion and a first thread;
- a second adjustment member having a bias member seat and a second thread;
- a seal member configured to seal the shunt system when positioned at the valve seal portion in a seal position;
- and
- a biasing member configured to bias the seal member against the valve seal portion with a biasing force,
- wherein the first thread threadably engages the second thread and wherein the threadable engagement is adjustable to vary a dimension between the valve seal portion and the bias member seat along an axis perpendicular to the flow axis, thereby varying the biasing force.
8 more elements
A method of forming a shunt system configured to be placed in a subject, comprising:
- providing an inlet connection portion with a bore therethrough;
- providing an outlet connection portion and a bore therethrough, at least one of the bore through the inlet or the bore through the outlet extending along a flow axis;
- forming a reservoir between a cover and a base in a fluid flow path between the inlet connection and the outlet connection;
- providing a valve mechanism positioned between the inlet and the outlet to control a flow from the inlet to the outlet at a selected threshold pressure, the valve mechanism including a valve seal portion and a bias member seat;
- positioning a seal member configured to seal the shunt system when positioned at the valve seal in a seal position-within the first adjustment mechanism of the second adjustment mechanism;
- biasing the seal member with a biasing member configured to bias the seal member against the valve seal portion with a biasing force;
- and
- repositioning the valve seal portion relative to the bias member seat along an axis perpendicular to the flow axis to vary the biasing force of the biasing member against the seal member.
5 more elements
A shunt system configured to be placed in a subject, comprising:
- an inlet having an inlet connection portion and a bore therethrough;
- an outlet having an outlet connection portion and a bore therethrough, at least one of the bore through the inlet or the bore through the outlet extending along a flow axis;
- a reservoir in a fluid flow path from the inlet to the outlet, wherein a fluid is operable to flow into the inlet, through the reservoir, and out the outlet;
- a valve mechanism positioned between the inlet and the outlet to control a flow from the inlet to the outlet at a selected threshold pressure, wherein the valve mechanism comprises:
- a first adjustment member having a valve seal portion and a first thread;
- a second adjustment member having a bias member seat and a second thread;
- a seal member configured to seal the shunt system when positioned at the valve seal in a seal position;
- and
- a biasing member configured to bias the seal member against the valve seal portion with a biasing force,
- wherein the biasing force is selected at least in part by the position of the valve seal portion relative to the bias member seat,
- wherein the first thread of the first adjustment member threadably engages the second thread of the second adjustment member and wherein the threadable engagement is adjustable to vary a dimension between the valve seal portion and the bias member seat along an axis perpendicular to the flow axis, thereby varying the biasing force;
- and
- a flow limiter assembly having a chamber base and a cover, wherein the chamber base is configured to limit a siphon away from the reservoir through the valve mechanism.
10 more elements
Dependencies are inferred from the claim text.