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US 11,766,516 B2Granted
Vacuum assisted drainage reservoir and systems
AssigneeMerit Medical Systems, Inc.
InventorsArlin D. Nelson, Joanne Hislop, Christopher Cindrich, Andrew Hansen, Nicholas Accisano, III, Kenneth Sykes, Gregory R. McArthur, Michael Dean Haslam
Life of this patent
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Abstract
Devices used to drain fluid are disclosed. The devices may be configured to drain fluid from a body cavity using a vacuum pressure. The devices include a reservoir and a vacuum generating member configured to expand the reservoir and generate a vacuum pressure within the reservoir. The devices can be configured to be shipped in a collapsed state.
Claims18
A vacuum assisted drainage system comprising:
- a collapsible reservoir comprising a compliant walled housing;
- a proximal end cap coupled to the compliant walled housing and comprising a proximal coupling member;
- a distal end cap coupled to the compliant walled housing and comprising a distal coupling member configured to engage with the proximal coupling member when the collapsible reservoir is in a collapsed state, wherein the proximal coupling member and the distal coupling member are threaded and configured to occupy a dead space within the collapsible reservoir;
- and
- a vacuum generating member configured to generate a vacuum pressure within the collapsible reservoir when the collapsible reservoir is changed from the collapsed state to an expanded state having the proximal coupling member disengaged and decoupled from the distal coupling member such that the proximal coupling member and the distal coupling member are spaced from one another,
- wherein the collapsible reservoir comprises a vent valve comprising a flap valve configured to vent gas or air from the collapsible reservoir and a ball valve configured to prevent fluid from exiting the collapsible reservoir.
3 more elements
A method of draining fluid from a body cavity, comprising:
- connecting a reservoir to a drainage tube;
- activating a vacuum generating member;
- rotating a reservoir distal cap relative to a reservoir proximal cap to disengage a proximal portion of an internal locking mechanism on the reservoir proximal cap from a distal portion of the internal locking mechanism on the reservoir distal cap, wherein the internal locking mechanism is configured to maintain the reservoir in a collapsed state until the vacuum generating member is activated;
- and
- expanding the reservoir from a collapsed state to an expanded state having the proximal portion of the internal locking mechanism decoupled and spaced from the distal portion of the locking mechanism to generate a vacuum pressure within the reservoir.
2 more elements
A vacuum assisted drainage system comprising:
- a collapsible reservoir comprising:
- a compliant wall;
- a proximal end cap coupled to the compliant wall;
- a distal end cap coupled to the compliant wall;
- and
- a locking mechanism, wherein the proximal end cap comprises a gap and the distal end cap comprises a radially inward directed lug configured to be received by the gap when the collapsible reservoir is in a collapsed state, wherein the gap and the radially inward directed lug are configured to occupy a space within the collapsible reservoir, and wherein the locking mechanism is disengaged by rotating the distal end cap relative to the proximal end cap;
- and
- a vacuum generating member configured to generate a vacuum pressure within the collapsible reservoir when the collapsible reservoir is changed from the collapsed state to an expanded state having the radially inward directed lug and the gap spaced from one another,
- wherein the vacuum generating member comprises a compression spring disposed within or external to the collapsible reservoir.
6 more elements
Dependencies are inferred from the claim text.