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US 6,656,133 B2Granted
Transmission assembly for a surgical biopsy device
AssigneeEthicon Endo-Surgery, Inc.
InventorsJames W. Voegele, Randy R. Stephens, Craig F. Forester, William A. Garrison, Michael E. Boehm, Anil Nalagatla
Life of this patent
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Abstract
The present invention is directed to an improved cable driven surgical biopsy device wherein a transmission assembly is disposed at a proximal end of the biopsy device. The transmission assembly being adapted to convert rotational motion of a cable entering the biopsy device of a substantially right angle into rotational energy to drive the axial cutter in the biopsy device.
Claims5
A biopsy instrument comprising:
- a base assembly including a firing mechanism;
- a probe assembly detachably mounted to said base assembly, said probe assembly comprising:
- a cutter assembly comprising:
- a cutter;
- a gear mechanism adapted to move said cutter;
- a piercer assembly comprising:
- a piercer;
- a probe mount;
- a drive assembly detachably mounted to said cutter assembly, said drive assembly comprising:
- a flexible drive shaft;
- a transmission comprising:
- a first bevel gear operatively connected to a distal end of said flexible drive shaft;
- a second bevel gear intermeshed with said first bevel gear and operatively connected to said gear mechanism.
10 more elements
A biopsy instrument comprising:
- a base assembly including a firing mechanism;
- a probe assembly detachably mounted to said base assembly, said probe assembly comprising:
- a cutter assembly comprising:
- a cutter;
- a first drive gear;
- a gear mechanism adapted to move said cutter wherein said gear mechanism includes a second drive gear adapted to mesh with said first drive gear;
- a piercer assembly comprising:
- a piercer including a cutter lumen adapted to receive said cutter;
- a probe mount adapted to slideably connect said piercer to said cutter assembly;
- a drive assembly detachable mounted to said cutter assembly, said drive assembly comprising:
- a flexible drive shaft adapted to be connected at its proximal end to a control unit including a motor;
- a transmission adapted to transmit motion from a distal end of said flexible drive shaft to said gear mechanism, said transmission comprising:
- a first bevel gear operatively connected to a distal end of said flexible drive shaft;
- a second bevel gear intermeshed with said first bevel gear at a first angle with respect to said first bevel gear and operatively connected to a releasable drive mechanism adapted to slideably connect with a proximal end of said gear mechanism.
11 more elements
A transmission assembly for a medical instrument said transmission assembly comprising:
- a mounting bracket;
- a transmission plate;
- a rotation coupling assembly comprising:
- a rotation gear;
- a rotation drive coupling;
- a translation coupling assembly comprising:
- a translation gear;
- a translation drive coupling;
- a thumbwheel rotation assembly comprising:
- a port drive coupling;
- a first port gear;
- a second port gear;
- a knob post;
- an electrical cable strain relief;
- a clamping plate assembly comprising:
- a rotational bevel gear;
- a translational bevel gear;
- a rotation shaft;
- a translation shaft;
- an encoder assembly comprising:
- a first bearing assembly comprising:
- a bearing;
- an encoder;
- a flex relief.
21 more elements
Dependencies are inferred from the claim text.