Method and system to determine an optimal tissue compression time to implant a surgical element
AssigneeTyco Healthcare Group LP
InventorMichael Soltz
Life of this patent
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Abstract
A method for determining an optimal compression of tissue to apply a surgical element has the steps of applying a load to the tissue. The method has the step of determining a reactive load applied by the tissue in response to the load. The method also has the step of determining the reactive load per unit time for a predetermined time period and determining a slope of the reactive load per unit time. The method further has the steps of evaluating the slope relative to a predetermined threshold, and signaling when the slope exceeds the predetermined threshold.
Claims50
A method for determining an optimal compression of tissue to apply a surgical element, the method comprising:
- applying a load to the tissue;
- determining a reactive load applied by the tissue in response to the load;
- determining the reactive load per unit time for a predetermined time period;
- determining a slope of the reactive load per unit time;
- evaluating the slope relative to a predetermined threshold;
- and
- signaling when the slope exceeds the predetermined threshold.
An apparatus for determining an optimal amount of tissue compression prior to the insertion of a surgical element into the tissue, comprising:
- a measuring device configured to detect a tissue parameter upon the compression of the tissue;
- and
- wherein when the measuring device reaches a threshold after the tissue is compressed for a predetermined time period and has an indicator to indicate to the surgeon the event of the threshold and that the surgical element is ready to be inserted to the compressed tissue, wherein the threshold is indicative of the surgical element being properly formed in the tissue at the indicated time period, and wherein when the compression is lifted after the threshold the tissue with the surgical element returns to a substantially an uncompressed state without necrosis.
A method for determining an optimal compression of tissue to apply a surgical element, the method comprising:
- measuring an initial tissue thickness;
- applying a load to the tissue;
- determining a physiological event of the tissue in response to the load applied;
- measuring the thickness at the event;
- and
- modulating a surgical instrument in response to the thickness at the event.
A device for determining an optimal amount of compression of tissue to apply a surgical element, the device comprising:
- a body having a handle assembly connected to a shaft;
- a load cell assembly having a load cell;
- a movable platen and a stationary platen connected to the shaft;
- wherein the movable platen compresses the tissue between the stationary platen to apply a load to the tissue;
- wherein the load cell is disposed in contact with the movable platen to determine a reactive load applied by the tissue in response to the load;
- and
- a controller configured to determine the reactive load per unit time for a predetermined time period.
An apparatus to determine an optimal amount of strain on tissue to apply a surgical element, the apparatus comprising:
- a first caliper arm;
- a second caliper arm;
- a body connected to the first caliper arm and the second caliper arm, the distance between the first caliper arm and the second caliper arm being a gap;
- wherein the first caliper arm is movable with respect to the second caliper arm and is adapted to move in a direction toward to the second caliper arm to measure an initial tissue thickness in the gap, wherein the first caliper arm and the second caliper arm can further move toward one another to apply a load to the tissue to compress the tissue to a predetermined tissue thickness, and wherein the predetermined tissue thickness corresponds to the optimal amount of strain on the tissue suitable to apply the surgical element into tissue.
Dependencies are inferred from the claim text.