Fair Value - Additional Information (Detail)	12 Months Ended
	Sep. 28, 2012
Calypso Medical Technologies, Inc. | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, estimated sales units used in simulation	69
Contingent consideration, estimated discount rates used in simulation	0.13%
Calypso Medical Technologies, Inc. | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, estimated sales units used in simulation	193
Contingent consideration, estimated discount rates used in simulation	0.42%
InfiMed, Inc. | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, estimated sales units used in simulation	171
Contingent consideration, estimated discount rates used in simulation	1.37%
InfiMed, Inc. | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, estimated sales units used in simulation	299
Contingent consideration, estimated discount rates used in simulation	1.75%