Biopsy device with adjustable sampling
AssigneeAllegiance Corporation
InventorAlberto Bauer
Life of this patent
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Abstract
The invention relates to a biopsy device having the ability to adjust the size of the sample to be removed. The biopsy device includes biopsy needle assembly and cannula insertion guide co-axially aligned therewith such that longitudinal adjustment of the cannula insertion guide likewise adjusts the exposure of the stylet and cutting edge of the biopsy needle assembly thereby changing the size of the resulting sample. A longitudinal adjusting element is positioned between and connects the cannula insertion guide and housing of the device. The invention is particularly useful in biopsy procedures where improved control over sample size and cutting stroke are desirable.
Claims15
A biopsy device comprising:
- a) a biopsy needle assembly having a perforating stylet within a cannula having a cutting edge;
- b) a housing having a control device for operation of said biopsy needle assembly;
- c) a cannula insertion guide co-axially aligned with and accommodating said biopsy needle assembly and having a proximal attachment means;
- and
- d) a longitudinal adjusting element positioned between said housing and cannula insertion guide and having a proximal portion and distal attachment means and a lumen adapted for placement of said biopsy needle assembly;
- wherein said longitudinal adjusting element is adapted to co-axially adjust the position of the cannula insertion guide relative to the biopsy needle assembly of the device.
In a biopsy device having a housing and biopsy needle assembly wherein said housing has a control device for operation of the biopsy needle assembly, said biopsy needle assembly having a perforating stylet and a cannula cutting edge, the improvement comprising:
- (a) a cannula insertion guide;
- and
- (b) a longitudinal adjusting element positioned between a distal portion of said housing and a proximal portion of said cannula insertion guide such that movement of the longitudinal adjusting element co-axially adjusts the position of the cannula insertion guide relative to the biopsy needle assembly.
In a biopsy device comprising a housing and biopsy needle assembly wherein said housing has a control device for operation of the biopsy needle assembly, said biopsy needle assembly having a perforating stylet and a cannula cutting edge, the improvement comprising:
- (a) a cannula insertion guide;
- and
- (b) a longitudinal adjusting element positioned between a distal portion of said housing and a proximal portion of said cannula insertion guide such that movement of the longitudinal adjusting element co-axially adjusts the position of the cannula insertion guide relative to the biopsy needle assembly;
- and
- (c) an indicator means for indicating position and longitudinal displacement of said cannula insertion guide relative to the housing.
Dependencies are inferred from the claim text.