Simulated tissue models and methods
AssigneeApplied Medical Resources Corporation
InventorsGregory K. Hofstetter, Tracy Breslin, Nikolai Poulsen, Khodr Saleh
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Abstract
Simulated tissue structures for practicing surgical techniques and methods of manufacturing those structures are provided. In particular, a realistic organ model or simulated tissue portion for practicing the removal of a tumor or other undesired tissue followed by suturing a remnant defect as part of the same surgical procedure is provided. The simulated tissue structures include a polyp simulation having a suturable mesh layer that is separable from a defect layer. A simulated colon model with interchangeable and suturable tissue pods is also provided as is a fully suturable rectum model and a rectum model with integrative suturable and removable polyp zones.
Claims20
A simulated tissue model, comprising:
- a substantially cylindrical tube having an inner surface and an outer surface extending between a proximal end and a distal end and defining a central lumen having a longitudinal axis, wherein the cylindrical tube comprises:
- a first layer made of silicone having a first tubular sidewall with an inner surface and an outer surface and at least one recess having a depth formed in the outer surface of the first tubular sidewall;
- a second layer made of silicone having a substantially planar inner surface opposite a substantially planar outer surface defining a thickness therebetween;
- the second layer being sized and configured to fit inside the recess;
- a third layer made of silicone having a second tubular sidewall with an inner surface and an outer surface;
- the second tubular sidewall being substantially uniform;
- the third layer and the first layer are adhered together such that the inner surface of the second tubular sidewall faces and contacts the outer surface of the first tubular sidewall and such that the second layer inside the recess is captured between the first layer and third layer.
A method for manufacturing a simulated tissue model, comprising the steps of:
- providing an elongated mandrel having an outer surface with at least one depression;
- rotating the mandrel;
- applying a first layer of uncured silicone on the mandrel;
- allowing the first layer to cure to form a substantially tubular structure having an inner surface and an outer surface and a well having a depth formed in the outer surface in the location of the depression;
- providing a second layer of cured silicone having a shape substantially corresponding to the shape of the well and a thickness substantially corresponding to the depth of the well;
- placing the second layer inside the well of the first layer;
- applying a third layer of uncured silicone on the outer surface of the first layer and second layer;
- and
- allowing the third layer to cure and adhere to the first layer and second layer to form a smooth outer surface.
Dependencies are inferred from the claim text.