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US 8,262,585 B2Granted
Single-insertion, multiple sampling biopsy device with linear drive
AssigneeC. R. Bard, Inc.
InventorsStanley O. Thompson, Timothy J. Coonahan, Jon Taylor
Life of this patent
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Abstract
The present invention provides for exemplary embodiments of a single-insertion, multiple sampling biopsy device. Exemplary embodiments of a single-insertion, multiple sampling device with integrated marker release.
Claims27
A single-insertion, multiple sampling biopsy device, comprising:
- an outer cannula configured to sever tissue, the outer cannula configured to extend along a longitudinal axis from a proximal end to a distal end, the outer cannula having a first port;
- a stylet disposed in the outer cannula and configured to translate along the longitudinal axis towards the distal and proximal ends in the outer cannula, the stylet having a sample acquisition recess located proximal to a pointed tip;
- a sheath disposed between the outer cannula and the stylet, the sheath configured to translate along the longitudinal axis towards the distal and proximal ends;
- a bulkhead disposed in the stylet and configured to translate with the stylet along the longitudinal axis towards the distal and proximal ends;
- and
- a drive unit coupled to the outer cannula, stylet, and sheath and configured to selectively transmit motive force to at least one of the outer cannula, stylet, and sheath such that the outer cannula is extended to cover the sample acquisition recess of the stylet to sever tissue in the sample acquisition recess to form a tissue sample and such that the sheath is interposed between the outer cannula and the sample acquisition recess to cover the severed tissue sample in the sample acquisition recess.
3 more elements
A single-insertion, multiple sampling biopsy device, comprising:
- a stylet having first bulkhead, a second bulkhead, and a sample acquisition recess defined between the first bulkhead and the second bulkhead;
- a first sheath extending along a longitudinal axis from a proximal end to a distal end;
- the first sheath being selectively configurable to open and close the sample acquisition recess to sever a tissue sample;
- a second sheath interposed between the first sheath and the stylet, the second sheath being configured to cover the tissue sample in the sample acquisition recess;
- the first sheath having a sample recovery port located between the proximal end and the distal end;
- and
- a drive unit coupled to the stylet to move the sample acquisition recess with the second sheath from the distal end of the first sheath to the sample recovery port such that a sample received in the sample acquisition recess of the stylet is transported to the sample recovery port of the first sheath.
4 more elements
A method of transporting a tissue-containing chamber with a biopsy device having four elongated members that extends along a longitudinal axis between a distal end and a proximal end, the method comprising:
- exposing a first aperture of a first sheath and a second aperture of a second sheath, the second sheath having a chamber defined by a first bulkhead, a second bulkhead and a floor portion of the second sheath;
- providing a vacuum proximate the second aperture;
- enclosing the chamber of the second sheath with a third sheath;
- and
- translating the second and third sheaths, with the chamber, through a substantial portion of a fourth sheath and exposing the chamber in a third aperture formed through the fourth sheath.
2 more elements
A single-insertion, multiple sampling biopsy device, comprising:
- an outer cannula extending along a longitudinal axis from a proximal end to a distal end, the outer cannula having a cutting distal end configured to sever tissue and a side port arranged proximal of the distal end;
- a cutting tip supported by twin longitudinal members that remains stationary relative to the outer cannula;
- a first sheath within the outer cannula, with a distal beveled end, configured to translate in the distal and proximal directions;
- a second sheath within the outer cannula and within the first sheath, the second sheath configured to translate along a longitudinal axis between the distal and proximal ends, and said second sheath having distal and proximal bulkheads that form a tissue accepting recess, the proximal bulkhead also forming a fluid passage in communication with the proximal end;
- a drive unit to translate and revolve the outer cannula relative to the longitudinal members, the first sheath, and the second sheath;
- and
- a drive unit to translate the first and second sheaths relative to the cutting tip and outer cannula where the first sheath and the second sheath are configured to translate in a predetermined relationship.
4 more elements
Dependencies are inferred from the claim text.