Shoulder implant for simulating a bursa
AssigneeStryker European Operations Limited
InventorShaul Shohat
Life of this patent
Estimating the term…
Abstract
A shoulder implant for simulating a naturally occurring bursa proximal to or in lieu of a subacromial bursa, the shoulder implant comprising: an expandable member expandable to a size and/or a shape sufficient to fill a space beneath an acromion and/or a coracoid process of the shoulder, the space defines a filled volume less than a maximal volume occupied by the expandable member if fully expanded; and an amount of filler for filling the expandable member to the filled volume, such that, when implanted, the expandable member is configured to cushion and facilitate motion between a tendon and/or ligament of a rotator cuff, and a bone part in the shoulder.
Claims20
A shoulder implant for simulating a naturally occurring bursa proximal to or in lieu of a subacromial bursa, the shoulder implant comprising:
- a member formed of a collagen material and configured to fill a space beneath at least one of an acromion and a coracoid process of the shoulder, wherein the member includes an exterior surface and an interior surface extending around a cavity, wherein the member includes a thickness between the exterior surface and the interior surface and the collagen material extends through the thickness, and wherein the cavity, when filled, defines a filled volume.
A prosthesis comprising:
- an inflatable collagen chamber defining an opening through which fluid can flow into the inflatable collagen chamber to fill the inflatable collagen chamber and defining a single cavity comprising an outer surface having one or more external features configured to facilitate engagement between the outer surface of the single cavity and one or both of a first tissue and a second tissue opposite the first tissue;
- a rigid ring defining a lumen coupled to the opening of the inflatable collagen chamber;
- and
- a pressure regulating valve configured to seat in the lumen of the rigid ring to seal the opening of the collagen inflatable chamber,
- wherein the rigid ring is slidably disposed about a tube interfacing with the collagen inflatable chamber in a manner to prevent fluid from passing through an interface between the rigid ring and the tube,
- wherein the prosthesis is configured to be positioned in a void space of a joint between the first tissue and the second tissue.
A method comprising:
- (a) providing a prosthesis comprising a collagen implant capable of deformation under pressure, the collagen implant including a rigid ring and a lumen therein for enabling filling of the collagen implant;
- (b) inserting the collagen implant in a void space in a joint;
- (c) at least partially inflating the collagen implant using a filler;
- and (d) sealing the collagen implant.
Dependencies are inferred from the claim text.