US3927660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lymph duct cannulator and method
Assignee: North American Instrument Corp
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Filing: 1974-01-11
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Granted: 1975-12-23
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Expires: 1994-01-11
Abstract
Abstract This invention is directed to a product for and method of lymph duct cannulation which includes surgical isolation of a lymph duct, placing the duct in a groove of a lymph duct holder, occluding the duct adjacent and proximal to the holder, distending and dilating the duct by milking same toward the cannulator from a point distal thereto until the duct fills the groove, aligning a needle inserter adjacent and distal to the holder having a channel that aligns with said groove and fixes the duct securely in said groove, and inserting the needle through the inserter channel into the duct within the groove. The groove is provided with an ovoid slot through which a ligature may be placed around the duct and tightened to hold the needle in place. The occluder is then loosened and radiopaque material injected through the needle into the duct.
Inventors
- 👤 Charles John Tegtmeyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:20
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/0247; A61B; A61B10/00; A61B10/0045; A61M2039/0294; Y; Y10; Y10S; Y10S128/00; Y10S128/26
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
115 words
A small isolated vessel cannulator comprising A. a rectangular vessel holder having proximal and distal end(s) surfaces, an open groove extending between said holder end(s) surfaces, and appropriately sized to receive and permit distension of said isolated vessel, B. a rectangular needle inserter having proximal and distal end(s) surfaces, and a channel extending between said inserter end(s) surfaces and appropriately sized to permit a needle to pass therethrough without play. and first means (to) slidably (secure) securing in a fixed position said inserter to said holder with said channel and said groove being in continuous longitudinal alignment and with one of said proximal end surfaces having facing contact with one of said distal end surfaces.
Claim 2
Dependent Claim
115 words
A small isolated vessel cannulator comprising A. a rectangular vessel holder having proximal and distal end(s) surfaces, an open groove extending between said holder end(s) surfaces, and appropriately sized to receive and permit distension of said isolated vessel, B. a rectangular needle inserter having proximal and distal end(s) surfaces, and a channel extending between said inserter end(s) surfaces and appropriately sized to permit a needle to pass therethrough without play. and first means (to) slidably (secure) securing in a fixed position said inserter to said holder with said channel and said groove being in continuous longitudinal alignment and with one of said proximal end surfaces having facing contact with one of said distal end surfaces.
Claim 3
Dependent Claim
18 words
The cannulator of claim 1 wherein said groove is enlarged intermediate said holder ends by an ovoid slot.
Claim 4
Dependent Claim
19 words
The cannulator of claim 2 wherein said ovoid slot is located closer said distal than said proximal holder end
Claim 5
Dependent Claim
16 words
The cannulator of claim 3 wherein said inserter is slidably secured at said distal holder end.
Claim 6
Dependent Claim
25 words
The cannulator of claim 1 wherein said first means is a plurality of aligned associated pins and bores connecting between said holder and said inserter.
Claim 7
Dependent Claim
47 words
The cannulator of claim 1 additionally comprising C. an occluder having proximal and distal end surfaces, and second means slidably securing in a fixed position said occluder to said holder at the holder end opposed to said inserter whereby any duct within said groove will be occluded.
Claim 8
Dependent Claim
16 words
The cannulator of claim 6 wherein said inserter is slidably secured at said distal holder end.
Claim 9
Dependent Claim
30 words
The cannulator of claim 7 wherein each of said means is a plurality of aligned associated pins and bores connecting between said holder and respectively said occluder and said inserter.
Claim 10
Independent Claim
120 words
The method of cannulating a small continuous vessel segment in situ in an animal body comprising isolating said vessel segment by removing any surrounding tissue between proximal and distal ends thereof, resting a grooved vessel holder on said body at said isolation site, placing a portion of said isolated segment in said groove, occluding said isolated segment near one of said ends beyond said groove, distending said portion in said groove by milking said vessel beyond said other end toward said occluded end, fixing said portion in said groove, bringing a needle Into longitudinal alignment with said groove near said other end, and inserting (a) said needle (in) into said portion (from near said other end into) within said groove.
Claim 11
Independent Claim
120 words
The method of cannulating a small continuous vessel segment in situ in an animal body comprising isolating said vessel segment by removing any surrounding tissue between proximal and distal ends thereof, resting a grooved vessel holder on said body at said isolation site, placing a portion of said isolated segment in said groove, occluding said isolated segment near one of said ends beyond said groove, distending said portion in said groove by milking said vessel beyond said other end toward said occluded end, fixing said portion in said groove, bringing a needle Into longitudinal alignment with said groove near said other end, and inserting (a) said needle (in) into said portion (from near said other end into) within said groove.
Claim 12
Dependent Claim
12 words
The method of claim 9 wherein said vessel is a lymph duct.
Claim 13
Dependent Claim
36 words
The method of claim 10 wherein said portion is fixed in said groove by a needle inserter having a channel in alignment with said groove and said needle is inserted in said portion through said channel.
Claim 14
Dependent Claim
18 words
The method of claim 11 wherein said inserter is slidably mounted on said holder at said other end.
Claim 15
Dependent Claim
17 words
The method of claim 12 wherein said one end is proximal and said other end is distal.
Claim 16
Dependent Claim
23 words
The method of claim 10 wherein said isolated segment is occluded by an occluder slidably mounted on said holder at said one end.
Claim 17
Independent Claim
138 words
The method of cannulating a continuous lymph duct segment in situ in an animal body comprising isolating said duct segment by removing any surrounding tissue between proximal and distal ends thereof, placing a ligature around said duct segment, resting a slotted-grooved duct holder on a said body at said isolation site, placing a portion of said isolated segment in said groove, arranging said ligature in said slot, occluding said isolated segment near one of said ends beyond said groove, distending said portion in said groove by milking said vessel beyond said other end toward said occluded end, fixing said portion in said groove, bringing a needle into longitudinal alignment with said groove near said other end, inserting said needle into said portion within said groove past said slot, and securing said ligature around said needle and said segment.
Claim 18
Independent Claim
138 words
The method of cannulating a continuous lymph duct segment in situ in an animal body comprising isolating said duct segment by removing any surrounding tissue between proximal and distal ends thereof, placing a ligature around said duct segment, resting a slotted-grooved duct holder on a said body at said isolation site, placing a portion of said isolated segment in said groove, arranging said ligature in said slot, occluding said isolated segment near one of said ends beyond said groove, distending said portion in said groove by milking said vessel beyond said other end toward said occluded end, fixing said portion in said groove, bringing a needle into longitudinal alignment with said groove near said other end, inserting said needle into said portion within said groove past said slot, and securing said ligature around said needle and said segment.
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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) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |