US4869259A
Expired / Lapsed
US
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Echogenically enhanced surgical instrument and method for production thereof
Assignee: Cook Urological Inc
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Filing: 1988-05-17
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Granted: 1989-09-26
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Expires: 2008-05-17
Abstract
Abstract A surgical instrument such as a needle is particle-blasted with particles approximately 50 microns in diameter to produce a uniformly roughened surface portion for use with an ultrasound imaging system to provide real-time monitoring of the location of a specific portion of the needle during insertion and guidance inside the patient's body.
Inventors
- 👤 Dexter J. Elkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:43
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/04; A61B17/06; A61B17/06066; A61B8/00; A61B8/08; A61B8/0833; A61B10/00; A61B10/02; A61B10/0233; A61B2017/061; A61B90/00; A61B90/39; A61B2090/3925
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
102 words
An echogenically enhanced surgical instrument for insertion into the body and used in conjunction with an ultrasound imaging system adapted to direct an incident beam of a given wavelength into the body, the instrument comprising: a smooth surface on that protion of the instrument which is to be inserted into the body, a roughened surface adjacent to said smooth surface and on that portion of the instrument which is to be inserted into the body, said roughtened surface having a roughness between sub-micron and 500 microns, and wherein said smooth surface and said roughened surface define a recognizable and distinct border therebetween.
Claim 2
Dependent Claim
102 words
An echogenically enhanced surgical instrument for insertion into the body and used in conjunction with an ultrasound imaging system adapted to direct an incident beam of a given wavelength into the body, the instrument comprising: a smooth surface on that protion of the instrument which is to be inserted into the body, a roughened surface adjacent to said smooth surface and on that portion of the instrument which is to be inserted into the body, said roughtened surface having a roughness between sub-micron and 500 microns, and wherein said smooth surface and said roughened surface define a recognizable and distinct border therebetween.
Claim 3
Dependent Claim
17 words
The echogenically enhanced surgical instrument of claim 1 wherein said roughened surface is randomly roughened by practicle-blasting.
Claim 4
Dependent Claim
16 words
The echogenically enhanced surgical instrument of claim 2 wherein the particle-blasting includes blasting with sand particles.
Claim 5
Dependent Claim
24 words
The echogenically enhanced surgical instrument of claim 2 wherein the particle-blasting includes blasting with particles having a size of between 1 and 100 microns.
Claim 6
Dependent Claim
22 words
The echogenically enhanced surgical instrument of claim 4 wherein the particle-blasting includes blasting with particles having a size of approximately 50 microns.
Claim 7
Dependent Claim
30 words
The echogenically enhanced surgical instrument of claim 1 wherein the surgical instrument is a needle having a leading edge and wherein said roughened surface is proximal to said leading edge.
Claim 8
Dependent Claim
18 words
The echogenically enhanced surgical instrument of claim 6 wherein said roughened surface defines a band surrounding said needle.
Claim 9
Dependent Claim
19 words
The echogenically enhanced surgical instrument of claim 1 wherein said roughened surface defines at least one specific geometric shape.
Claim 10
Dependent Claim
81 words
An echogenically enhanced surgical instrument for insertion into the body and used with an ultrasound imaging system adapted to direct an incident beam of a given wavelength into the body, the instrument comprising: a surface on that portion of the instrument which is to be inserted into the body, the surface being randomly roughened by particle-blasting with particles having a size between sub-micron and 500 microns, the particle-blasting defining a distinctly recognizable geometric shape at a predetermined position along the instrument.
Claim 11
Dependent Claim
81 words
An echogenically enhanced surgical instrument for insertion into the body and used with an ultrasound imaging system adapted to direct an incident beam of a given wavelength into the body, the instrument comprising: a surface on that portion of the instrument which is to be inserted into the body, the surface being randomly roughened by particle-blasting with particles having a size between sub-micron and 500 microns, the particle-blasting defining a distinctly recognizable geometric shape at a predetermined position along the instrument.
Claim 12
Dependent Claim
13 words
The echogenically enhanced surgical instrument of claim 9 wherein the particles are sand.
Claim 13
Dependent Claim
20 words
The echogenically enhanced surgical instrument of claim 9 wherein the particles have a size of between 1 and 100 microns.
Claim 14
Dependent Claim
18 words
The echogenically enhanced surgical instrument of claim 11 wherein the particles have a size of approximately 50 microns.
Claim 15
Dependent Claim
36 words
The echogenically enhanced surgical instrument of claim 9 wherein the particle-blasting is performed for a short period of time such that the average number of pits per unit area formed by the particle-blasting is very low.
Claim 16
Dependent Claim
28 words
The echogenically enhanced surgical instrument of claim 9 wherein the instrument is a needle having a leading edge and the roughened surface is proximal to the leading edge.
Claim 17
Dependent Claim
18 words
The echogenically enhanced surgical instrument of claim 11 wherein the roughened surface is a band surrounding the needle.
Claim 18
Independent Claim
102 words
A method of producing a significantly echogenically enhanced surgical instrument for insertion into and guidance through the body and for use with an ultrasound imaging system, comprising the steps of: providing a surgical instrument have a leading edge and a substantially smooth surface, both of which being on that position of the instrument which is to be inserted into the body; and particle-blasting a portion of said surface with particles having a size between sub-micron and 500 microns wherein said particle-blasted portion defines a recognizable and distinct border between the particle-blasted portion and the portion of said smooth surface which remains smooth.
Claim 19
Independent Claim
102 words
A method of producing a significantly echogenically enhanced surgical instrument for insertion into and guidance through the body and for use with an ultrasound imaging system, comprising the steps of: providing a surgical instrument have a leading edge and a substantially smooth surface, both of which being on that position of the instrument which is to be inserted into the body; and particle-blasting a portion of said surface with particles having a size between sub-micron and 500 microns wherein said particle-blasted portion defines a recognizable and distinct border between the particle-blasted portion and the portion of said smooth surface which remains smooth.
Claim 20
Dependent Claim
22 words
The method of producing a significantly echogenically enhanced surgical instrument of claim 16 wherein said particle-blasting step includes blasting with sand particles.
Claim 21
Dependent Claim
31 words
The method of producing a significantly echogenically enhanced surgical instrument of claim 17 wherein the particle-blasting step further includes blasting with particles having a size of between 1 and 100 microns.
Claim 22
Dependent Claim
28 words
The method of producing a significantly echogenically enhanced surgical instrument of claim 18 wherein the particle-blasting step includes blasting with particles having a size of approximately 50 microns.
Claim 23
Dependent Claim
26 words
The method of producing a significantly echogenically enhanced surgical instrument of claim 16 wherein said particle-blasting step includes blasting said portion in a specific, predetermined shape.
Claim 24
Dependent Claim
26 words
The method of producing a significantly echogenically enhanced surgical instrument of claim 16 wherein said particle-blasting step includes blasting said portion proximal to the leading edge.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-25 | 1993-03-27 | 1993-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-25 | 1997-03-27 | 1997-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-25 | 2001-03-27 | 2001-09-26 | $7700.00 | Window Closed / Lapsed |