US3598108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biopsy technique and biopsy device
Assignee: Individual
•
Filing: 1969-02-28
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Granted: 1971-08-10
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Expires: 1989-02-28
Abstract
Abstract A biopsy needle device and method of using the same includes an elongate needle having a tapered distal end portion which terminates in a distal cutting edge. An elongate sleeve member is inserted into the needle and corresponds in shape and length to the needle. An elongate stylet is positioned interiorly of the telescopically disposed needle and sleeve member and projects from the needle to close the distal end thereof so that the needle assembly may penetrate exterior tissue when a specimen is to be taken from a deeply located organ or tissue of a patient. The stylet is first removed and the biopsy specimen is collected in the sleeve member which is then removed from the needle while the needle is allowed to remain in place so that a heat transfer means such as a microcauter or a cryoprobe may be introduced into the needle. The distal end of the microcauter or cryoprobe projects into the biopsy track, and the needle and heat transfer means are removed as a unit whereby cauterization or cooling of the biopsy track occurs and intro-organ bleeding is prevented. The expanding or tapered distal end portions of the sleeve and biopsy needle permit the specimen to be collected in the sleeve with little if any damage to the specimen.
Inventors
- 👤 Khosrow Jamshidi
- 👤 William R Swaim
- 👤 Harold E Windschitl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:47
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0233; A61B18/00; A61B18/04; A61B18/08; A61B18/082; A61B18/02; A61B17/00; A61B17/12; A61B2017/12004; A61B2018/00005; A61B2018/00041
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
247 words
A method of obtaining a biopsy specimen from an organ such as a spleen, thyroid or the like, said method comprising penetrating and progressively advancing the distal end portion of an elongate hollow biopsy instrument assembly into a patient, but with the proximal end of the instrument assEmbly located exteriorly of the patient, the instrument assembly including a biopsy needle having a tissue-collecting medium located interiorly thereof, and an obstructing medium positioned interiorly of the tissue-collecting medium and obstructing the open end of the biopsy needle assembly, continuing the advancement of the distal end portion of the needle assembly until the distal end portion of the assembly is disposed in close proximal relation to the organ from which the tissue is to be removed, removing the obstructing medium from the assembly, and thereafter advancing the needle and tissue-collecting medium as a unit into the tissue whereby a tissue specimen is cut and collected in the tissue-collecting medium, retracting the tissue-collecting medium from the needle through the proximal end thereof, inserting a heat transfer medium into the needle and exteriorly of the distal end thereof, the heat transfer medium having a temperature substantially higher or substantially lower than the body temperature of the patient to perform cauterization of the tissue, retracting the needle and heat transfer medium from the biopsy track whereby the heat transfer medium serves to stop bleeding of the tissue, and continuing retractive movement of the needle and its heat transfer medium from the patient.
Claim 2
Independent Claim
247 words
A method of obtaining a biopsy specimen from an organ such as a spleen, thyroid or the like, said method comprising penetrating and progressively advancing the distal end portion of an elongate hollow biopsy instrument assembly into a patient, but with the proximal end of the instrument assEmbly located exteriorly of the patient, the instrument assembly including a biopsy needle having a tissue-collecting medium located interiorly thereof, and an obstructing medium positioned interiorly of the tissue-collecting medium and obstructing the open end of the biopsy needle assembly, continuing the advancement of the distal end portion of the needle assembly until the distal end portion of the assembly is disposed in close proximal relation to the organ from which the tissue is to be removed, removing the obstructing medium from the assembly, and thereafter advancing the needle and tissue-collecting medium as a unit into the tissue whereby a tissue specimen is cut and collected in the tissue-collecting medium, retracting the tissue-collecting medium from the needle through the proximal end thereof, inserting a heat transfer medium into the needle and exteriorly of the distal end thereof, the heat transfer medium having a temperature substantially higher or substantially lower than the body temperature of the patient to perform cauterization of the tissue, retracting the needle and heat transfer medium from the biopsy track whereby the heat transfer medium serves to stop bleeding of the tissue, and continuing retractive movement of the needle and its heat transfer medium from the patient.
Claim 3
Dependent Claim
32 words
The method as defined in claim 1 wherein the tissue specimen collected in the tissue-collecting medium is progressively urged into an expanding collection zone during removal of the specimen from the patient.
Claim 4
Dependent Claim
29 words
The method as defined in claim 1 wherein said heat transfer medium heats the tissue defining the biopsy track to a differential temperature level sufficient to cauterize the same.
Claim 5
Dependent Claim
33 words
The method as defined in claim 1 wherein said heat transfer medium cools the tissue defining the biopsy track to a differential temperature level sufficient to completely stop any bleeding of the tissue.
Claim 6
Dependent Claim
248 words
A biopsy needle device comprising, an elongate hollow biopsy needle having open distal and proximal ends, said distal end defining a cutting edge, said needle being of uniform cylindrical configuration throughout the major portion of its length, and having a distal end portion tapered generally uniformly toward the tip of the distal end, an elongate hollow sleeve member positioned within said needle and corresponding in length and shape to said needle, said sleeve member having a bore formed therein and being of uniformly cylindrical configuration throughout the major portion of its length and defining a biopsy tissue receiving and retaining cavity adjacent the distal end thereof, and having a distal end portion with inner and outer diameters tapered generally uniformly toward the tip of the distal end and defining an opening to said bore, an elongate stylet positioned within said sleeve and having a length dimension slightly greater than said sleeve and an outer diameter substantially equal to the inner diameter of said sleeve at the distal end thereof so that said stylet obstructs the distal end of the needle and sleeve to facilitate insertion of the needle, sleeve member, and stylet as a unit into a patient, whereby when said stylet is removed from the needle and sleeve after insertion into a tissue, and upon manipulation of the needle, the distal cutting edge of the needle will cut a tissue sample and the tissue sample will be collected in the tapered distal end portion of the sleeve.
Claim 7
Dependent Claim
248 words
A biopsy needle device comprising, an elongate hollow biopsy needle having open distal and proximal ends, said distal end defining a cutting edge, said needle being of uniform cylindrical configuration throughout the major portion of its length, and having a distal end portion tapered generally uniformly toward the tip of the distal end, an elongate hollow sleeve member positioned within said needle and corresponding in length and shape to said needle, said sleeve member having a bore formed therein and being of uniformly cylindrical configuration throughout the major portion of its length and defining a biopsy tissue receiving and retaining cavity adjacent the distal end thereof, and having a distal end portion with inner and outer diameters tapered generally uniformly toward the tip of the distal end and defining an opening to said bore, an elongate stylet positioned within said sleeve and having a length dimension slightly greater than said sleeve and an outer diameter substantially equal to the inner diameter of said sleeve at the distal end thereof so that said stylet obstructs the distal end of the needle and sleeve to facilitate insertion of the needle, sleeve member, and stylet as a unit into a patient, whereby when said stylet is removed from the needle and sleeve after insertion into a tissue, and upon manipulation of the needle, the distal cutting edge of the needle will cut a tissue sample and the tissue sample will be collected in the tapered distal end portion of the sleeve.
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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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |