Patent US7018343B2 successfully refreshed from Google Patents.
US7018343B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biopsy needle and biopsy device containing the same
Assignee: Merit Medical Systems Inc
•
Filing: 2003-03-27
•
Granted: 2006-03-28
•
Expires: 2023-03-27
Abstract
Abstract The invention described herein relates to an improved biopsy needle which enhances the accuracy of the sampling procedure and minimizes the trauma caused by the procedure. The biopsy needle comprises a tip that reduces or minimizes undesirable bias of the needle during sampling penetration of the tissue, the tip comprising a plurality of facets arranged and oriented in a manner which improves the interaction between the needle and tissue during its advancement and penetration therein thereby improving the performance of the biopsy needle. The invention also includes a biopsy device comprising the biopsy needle of the invention.
Inventors
- 👤 Michael Plishka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:53
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0233; A61B10/0266; A61B10/0275; A61B17/00; A61B17/34; A61B17/3417; A61B2017/3454
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
159 words
A biopsy needle for use in soft tissue sampling procedures comprising an elongate needle body having a longitudinal axis and sharp distal end having four facets, wherein each individual facet is substantially planar and said facets are arranged such that: each of a first pair of facets is positioned on the opposite side of the needle from the other, and both of said substantially planar surfaces of the first pair facets are oriented in a converging direction toward the distal-most end of the needle end; each of a second pair of facets is positioned such that each facet of said second pair is positioned between each of said first pair of facets, and both of the second pair of facets distally converge with one another so as to form a shared edge substantially in alignment with the longitudinal axis of the needle and said shared edge is positioned between distal-most points of each of said first pair of facets.
Claim 2
Dependent Claim
159 words
A biopsy needle for use in soft tissue sampling procedures comprising an elongate needle body having a longitudinal axis and sharp distal end having four facets, wherein each individual facet is substantially planar and said facets are arranged such that: each of a first pair of facets is positioned on the opposite side of the needle from the other, and both of said substantially planar surfaces of the first pair facets are oriented in a converging direction toward the distal-most end of the needle end; each of a second pair of facets is positioned such that each facet of said second pair is positioned between each of said first pair of facets, and both of the second pair of facets distally converge with one another so as to form a shared edge substantially in alignment with the longitudinal axis of the needle and said shared edge is positioned between distal-most points of each of said first pair of facets.
Claim 3
Dependent Claim
27 words
The biopsy needle according to claim 1 further comprising a sampling notch located proximal to the needle tip and comprises an intact portion with an open face.
Claim 4
Dependent Claim
34 words
The biopsy needle according to claim 2 , wherein said open face comprises a surface having a generally perpendicular orientation relative to the cross-sectional plane intersecting both facets of the first pair of facets.
Claim 5
Dependent Claim
179 words
A biopsy device comprising an outer cannula and a biopsy needle assembly, a portion of said biopsy needle residing within said outer cannula and structured to move relative thereto, said biopsy needle comprising: an elongated needle body having a longitudinal axis and sharp distal end having four facets, wherein each individual facet is substantially planar and said facets are arranged such that: each of a first pair of facets is positioned on the opposite side of the needle from the other, and both of said substantially planar surfaces of the first pair facets are oriented in a converging direction toward the distal-most end of the needle end; each of a second pair of facets is positioned such that each facet of said second pair is positioned between each of said first pair of facets, and both of the second pair of facets distally converge with one another so as to form a substantially in alignment with the longitudinal axis of the needle and said shared edge is positioned between distal-most points of each of said first pair of facets.
Claim 6
Dependent Claim
179 words
A biopsy device comprising an outer cannula and a biopsy needle assembly, a portion of said biopsy needle residing within said outer cannula and structured to move relative thereto, said biopsy needle comprising: an elongated needle body having a longitudinal axis and sharp distal end having four facets, wherein each individual facet is substantially planar and said facets are arranged such that: each of a first pair of facets is positioned on the opposite side of the needle from the other, and both of said substantially planar surfaces of the first pair facets are oriented in a converging direction toward the distal-most end of the needle end; each of a second pair of facets is positioned such that each facet of said second pair is positioned between each of said first pair of facets, and both of the second pair of facets distally converge with one another so as to form a substantially in alignment with the longitudinal axis of the needle and said shared edge is positioned between distal-most points of each of said first pair of facets.
Claim 7
Dependent Claim
32 words
The biopsy device according to claim 4 , wherein said biopsy needle further comprises a sampling notch located proximal to the needle tip and comprises an intact portion with an open face.
Claim 8
Dependent Claim
34 words
The biopsy device according to claim 5 , wherein said open face comprises a surface having a generally perpendicular orientation relative to the cross-sectional plane intersecting both facets of the first pair of facets.
Claim 9
Dependent Claim
70 words
The biopsy device according to claim 6 , wherein said outer cannula comprises a sharp beveled end that coordinates with the needle tip geometry so as to permit advancement of said sharp beveled end of said outer cannula beyond the sampling notch of said needle and alongside the area of the needle exterior surface between said first pair of facets without extending beyond the sharp distal end of said needle.
Claim 10
Dependent Claim
176 words
A biopsy needle comprising an elongated body, longitudinal axis, sharp distal end having four facets, and a sampling notch located proximal to said distal end, wherein each individual facet is substantially planar and said facets are arranged such that: each of a first pair of facets is positioned on the opposite side of the needle from the other, and both of said substantially planar surfaces of the first pair facets are oriented in a converging direction toward the distal-most end of the needle end; each of a second pair of facets is positioned such that each facet of said second pair of facets distally converge with one another so as to form a shared edge substantially in alignment with the longitudinal axis of the needle and said shared edge is positioned between distal-most points of each of said first pair facets; and wherein said sampling notch comprises an intact portion with an open face comprising a surface having a generally perpendicular orientation relative to the cross-sectional plane intersecting both facets of the first pair of facets.
Claim 11
Dependent Claim
176 words
A biopsy needle comprising an elongated body, longitudinal axis, sharp distal end having four facets, and a sampling notch located proximal to said distal end, wherein each individual facet is substantially planar and said facets are arranged such that: each of a first pair of facets is positioned on the opposite side of the needle from the other, and both of said substantially planar surfaces of the first pair facets are oriented in a converging direction toward the distal-most end of the needle end; each of a second pair of facets is positioned such that each facet of said second pair of facets distally converge with one another so as to form a shared edge substantially in alignment with the longitudinal axis of the needle and said shared edge is positioned between distal-most points of each of said first pair facets; and wherein said sampling notch comprises an intact portion with an open face comprising a surface having a generally perpendicular orientation relative to the cross-sectional plane intersecting both facets of the first pair of facets.
Claim 12
Dependent Claim
156 words
A needle for penetration of soft materials comprising an elongated needle body having a longitudinal axis and sharp distal end having four facets, wherein each individual facet is substantially planar and said facets are arranged such that: each of a first pair of facets is positioned on the opposite side of the needle from the other, and both of said substantially planar surfaces of the first pair facets are oriented in a converging direction toward the distal-most end of the needle end; each of a second pair of facets is positioned such that each facet of said second pair is positioned between each of said first pair of facets, and both of the second pair of facets distally converge with one another so as to form a shared edge substantially in alignment with the longitudinal axis of the needle and said shared edge is positioned between distal-most points of each of said first pair of facets.
Claim 13
Dependent Claim
156 words
A needle for penetration of soft materials comprising an elongated needle body having a longitudinal axis and sharp distal end having four facets, wherein each individual facet is substantially planar and said facets are arranged such that: each of a first pair of facets is positioned on the opposite side of the needle from the other, and both of said substantially planar surfaces of the first pair facets are oriented in a converging direction toward the distal-most end of the needle end; each of a second pair of facets is positioned such that each facet of said second pair is positioned between each of said first pair of facets, and both of the second pair of facets distally converge with one another so as to form a shared edge substantially in alignment with the longitudinal axis of the needle and said shared edge is positioned between distal-most points of each of said first pair of facets.
References Cited (Backward Citations)
US4157714A
Cited
US4561445A
Cited
US4655226A
Cited
US4815476A
Cited
US4961430A
Cited
US5052402A
Cited
US5172700A
Cited
US6129740A
Cited
US4976269A
Cited
US5094247A
Cited
US5100430A
Cited
US5238002A
Cited
US5313958A
Cited
US5810744A
Cited
US5458112A
Cited
US5651372A
Cited
US5807275A
Cited
US6176823B1
Cited
US5833668A
Cited
US5902278A
Cited
US5971940A
Cited
US6149607A
Cited
US6083150A
Cited
US6450973B1
Cited
US20030109801A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2009-03-27 | 2009-09-26 | 2010-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2013-03-27 | 2013-09-26 | 2014-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2017-03-27 | 2017-09-26 | 2018-03-28 | $7700.00 | Window Closed / Lapsed |