Patent GB439085A successfully refreshed from Google Patents.
Patent US20040049128A1 successfully refreshed from Google Patents.
US20040049128A1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biopsy apparatus
Assignee: Individual
•
Filing: 2003-08-12
•
Granted: —
•
Expires: 2023-08-12
Abstract
Abstract A disposable tissue removal device comprises a “tube within a tube” cutting element mounted to a handpiece. The inner cannula of the cutting element defines an inner lumen and terminates in an inwardly beveled, razor-sharp cutting edge. The inner cannula is driven by both a rotary motor and a reciprocating motor. At the end of its stroke, the inner cannula makes contact with the cutting board to completely sever the tissue. An aspiration vacuum is applied to the inner lumen to aspirate excised tissue through the inner cannula and into a collection trap that is removably mounted to the handpiece. The rotary and reciprocating motors are hydraulically powered through a foot pedal operated hydraulic circuit. The entire biopsy device is configured to be disposable. In one embodiment, the cutting element includes a cannula hub that can be connected to a fluid source, such as a valve-controlled saline bag.
Inventors
- 👤 Michael Miller
- 👤 Joseph Mark
- 👤 John Hancock
- 👤 Charles Butcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:04
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0233; A61B10/0266; A61B10/0275; A61B10/025; A61B10/0283; A61B2010/0208; A61B17/00; A61B2017/00973; A61B2217/00; A61B2217/002; A61B2217/005; A61B2217/007
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
147 words
1 . A tissue cutting device comprising: an elongated handpiece defining an elongated channel on an outer surface of said handpiece; a cannula hub mounted to said handpiece and having a fluid port; a tube connected at one end to said fluid port and having an opposite end connectable to a fluid source, said tube disposed within said elongated channel and sized to be recessed within said channel relative to said outer surface an outer cannula supported at a proximal end by said cannula hub and defining a tissue-receiving opening adjacent a distal end thereof, and a lumen between said proximal and distal ends in fluid communication with said fluid port of said cannula hub; and an inner cutting member slidably disposed within said lumen of said outer cannula and defining a cutting edge at said distal end operable to sever tissue projecting through said tissue-receiving opening.
Claim 2
Dependent Claim
147 words
1 . A tissue cutting device comprising: an elongated handpiece defining an elongated channel on an outer surface of said handpiece; a cannula hub mounted to said handpiece and having a fluid port; a tube connected at one end to said fluid port and having an opposite end connectable to a fluid source, said tube disposed within said elongated channel and sized to be recessed within said channel relative to said outer surface an outer cannula supported at a proximal end by said cannula hub and defining a tissue-receiving opening adjacent a distal end thereof, and a lumen between said proximal and distal ends in fluid communication with said fluid port of said cannula hub; and an inner cutting member slidably disposed within said lumen of said outer cannula and defining a cutting edge at said distal end operable to sever tissue projecting through said tissue-receiving opening.
Claim 3
Dependent Claim
59 words
2 . The tissue cutting device of claim 1 , further comprising a fluid source connected to said opposite end of said tube, said fluid source including: a container holding a supply of a fluid; and a valve between said container and said fluid port and operable to control the flow of fluid from said container through said tube.
Claim 4
Dependent Claim
21 words
3 . The tissue cutting device of claim 2 , wherein said valve is a pinch valve engaged about said tube.
Claim 5
Dependent Claim
94 words
4 . A method for performing a tissue biopsy at a sample site within a patient comprising the steps of: introducing an outer cannula into the patient with a tissue receiving opening adjacent the sample site; providing a medical treatment through the outer cannula at the sample site; connecting the outer cannula to a tissue biopsy handpiece having a motor-driven tissue cutting cannula with the tissue cutting cannula extending into the outer cannula; operating the tissue biopsy handpiece to excise tissue through the tissue receiving opening; and storing the excised tissue for subsequent examination.
Claim 6
Dependent Claim
94 words
4 . A method for performing a tissue biopsy at a sample site within a patient comprising the steps of: introducing an outer cannula into the patient with a tissue receiving opening adjacent the sample site; providing a medical treatment through the outer cannula at the sample site; connecting the outer cannula to a tissue biopsy handpiece having a motor-driven tissue cutting cannula with the tissue cutting cannula extending into the outer cannula; operating the tissue biopsy handpiece to excise tissue through the tissue receiving opening; and storing the excised tissue for subsequent examination.
Claim 7
Dependent Claim
152 words
5 . A tissue cutting device for removing tissue from a patient comprising: an outer cannula configured for introduction into the patient and defining a tissue-receiving opening adjacent a distal end thereof; an inner cannula slidably disposed within said outer cannula and defining a lumen from an open distal end to an open opposite end, said inner cannula further defining a cutting edge at said open distal end operable to sever tissue projecting through said tissue-receiving opening; a motor assembly operably coupled to said inner cannula to rotate and reciprocate said inner cannula within said outer cannula; a vacuum source fluidly coupled to said inner cannula for generating a vacuum in said lumen of said inner cannula to draw severed tissue therethrough; and a tissue collection chamber interposed between said vacuum source and said open opposite end of said inner cannula to receive severed tissue drawn into said chamber by the vacuum.
Claim 8
Dependent Claim
152 words
5 . A tissue cutting device for removing tissue from a patient comprising: an outer cannula configured for introduction into the patient and defining a tissue-receiving opening adjacent a distal end thereof; an inner cannula slidably disposed within said outer cannula and defining a lumen from an open distal end to an open opposite end, said inner cannula further defining a cutting edge at said open distal end operable to sever tissue projecting through said tissue-receiving opening; a motor assembly operably coupled to said inner cannula to rotate and reciprocate said inner cannula within said outer cannula; a vacuum source fluidly coupled to said inner cannula for generating a vacuum in said lumen of said inner cannula to draw severed tissue therethrough; and a tissue collection chamber interposed between said vacuum source and said open opposite end of said inner cannula to receive severed tissue drawn into said chamber by the vacuum.
Claim 9
Dependent Claim
31 words
6 . The tissue cutting device of claim 5 , wherein said tissue collection chamber includes a filter permitting passage of fluid therethrough while retaining the severed tissue within said chamber.
Claim 10
Dependent Claim
169 words
7 . A tissue cutting device comprising: an outer cannula defining a tissue-receiving opening adjacent a distal end thereof; an inner cannula slidably disposed within said outer cannula and defining a lumen from an open distal end to an open opposite proximal end, said inner cannula defining a cutting edge at said open distal end operable to sever tissue projecting through said tissue-receiving opening; a rotary motor operably coupled to said inner cannula to rotate said inner cannula within said outer cannula; a reciprocating motor operably coupled to said rotary motor to translate said rotary motor and thereby translate said inner cannula within said outer cannula while said inner cannula rotates; and a handpiece supporting said rotary motor and said reciprocating motor, said handpiece including a pair of opposite rails, wherein said rotary motor includes a pair of opposite outwardly projecting wings configured to be slidably supported on said opposite rails to resist rotation of said rotary motor while permitting said rotary motor to translate relative to said rails.
Claim 11
Dependent Claim
169 words
7 . A tissue cutting device comprising: an outer cannula defining a tissue-receiving opening adjacent a distal end thereof; an inner cannula slidably disposed within said outer cannula and defining a lumen from an open distal end to an open opposite proximal end, said inner cannula defining a cutting edge at said open distal end operable to sever tissue projecting through said tissue-receiving opening; a rotary motor operably coupled to said inner cannula to rotate said inner cannula within said outer cannula; a reciprocating motor operably coupled to said rotary motor to translate said rotary motor and thereby translate said inner cannula within said outer cannula while said inner cannula rotates; and a handpiece supporting said rotary motor and said reciprocating motor, said handpiece including a pair of opposite rails, wherein said rotary motor includes a pair of opposite outwardly projecting wings configured to be slidably supported on said opposite rails to resist rotation of said rotary motor while permitting said rotary motor to translate relative to said rails.
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