US6730095B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retrograde plunger delivery system
Assignee: Boston Scientific Scimed Inc
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Filing: 2002-06-26
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Granted: 2004-05-04
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Expires: 2022-06-26
Abstract
Abstract Cannulas are provided for delivering therapeutic material to a treatment site. The cannula includes a cannula body with a plurality of openings at the distal end, including a longitudinal opening and a plurality of transverse openings that are axially spaced from each other. The cannula also includes a plunger that is configured to be slidably disposed within the cannula lumen. When the plunger is proximally displaced in the cannula lumen, the plunger seals the distal end and deflects the therapeutic material out the transverse openings. As the plunger is proximally displaced within the lumen, the therapeutic material is forced to perfuse out transverse openings located proximal of the plunger position. In one embodiment, the plunger includes an additional pliable sealable member. In another embodiment, the distal end of the cannula body may be implanted by separating the distal end from the cannula body.
Inventors
- 👤 Stanley W. Olson, Jr.
- 👤 Lex P. Jansen
- 👤 Michael Burns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:47
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/70; A61B17/7097; A61B17/7098; A61B17/88; A61B17/8802; A61B17/8805; A61B17/8811; A61M; A61M2210/00; A61M2210/02; A61M25/00; A61M25/0067; A61M25/0068; A61M25/0069; A61M25/007
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
73 words
A cannula for use in delivering therapeutic material, comprising: a cannula body having a proximal end, a distal end, and a lumen extending between the proximal and distal ends; and a plunger configured to be slidably disposed within the lumen; wherein the distal end of the cannula body has one or more openings in fluid communication with the lumen, and a distal opening for allowing the plunger to exit distally from the lumen.
Claim 2
Dependent Claim
73 words
A cannula for use in delivering therapeutic material, comprising: a cannula body having a proximal end, a distal end, and a lumen extending between the proximal and distal ends; and a plunger configured to be slidably disposed within the lumen; wherein the distal end of the cannula body has one or more openings in fluid communication with the lumen, and a distal opening for allowing the plunger to exit distally from the lumen.
Claim 3
Dependent Claim
27 words
The cannula of claim 1 , further comprising a detachment structure that allows the distal end to be separated from the proximal end of the cannula body.
Claim 4
Dependent Claim
38 words
The cannula of claim 2 , wherein the detachment structure comprises one or more axially spaced notches that allows the cannula body to break into two or more pieces in the presence of a shearing or twisting force.
Claim 5
Dependent Claim
17 words
The cannula of claim 3 , wherein the one or more notches comprises a plurality of notches.
Claim 6
Dependent Claim
21 words
The cannula of claim 3 , wherein the detachment structure comprises a plurality of the notches circumferentially offset from each other.
Claim 7
Dependent Claim
31 words
The cannula of claim 2 , wherein the detachment structure comprises a mechanical junction that allows the cannula body to separate into two pieces in the presence of an external force.
Claim 8
Dependent Claim
31 words
The cannula of claim 6 , wherein the mechanical junction comprises a connective sleeve that allows the cannula body to separate into two pieces in the presence of the external force.
Claim 9
Dependent Claim
31 words
The cannula of claim 6 , wherein the mechanical junction comprises a threaded junction that allows the cannula body to separate into two pieces in the presence of a rotational force.
Claim 10
Dependent Claim
15 words
The cannula of claim 1 , wherein the plunger further comprises a pliable sealing member.
Claim 11
Dependent Claim
14 words
The cannula of claim 1 , wherein the cannula body comprises a biocompatible material.
Claim 12
Dependent Claim
13 words
The cannula of claim 1 , wherein the plunger comprises a biocompatible material.
Claim 13
Dependent Claim
27 words
The cannula of claim 1 , wherein each of the one or more openings comprises a transverse opening proximal to the distal tip of the cannula body.
Claim 14
Dependent Claim
40 words
The cannula of claim 1 , wherein the distal end of the cannula body includes a plurality of the openings, each of the plurality of the openings comprises a transverse opening proximal to the distal tip of the cannula body.
Claim 15
Dependent Claim
16 words
The cannula of claim 13 , wherein the transverse openings are circumferentially offset from each other.
Claim 16
Dependent Claim
16 words
The cannula of claim 13 , wherein the transverse openings is arranged into axially spaced groups.
Claim 17
Dependent Claim
18 words
The cannula of claim 15 , wherein each transverse opening group comprises a plurality of axially aligned openings.
Claim 18
Dependent Claim
89 words
A cannula for use in delivering therapeutic material, comprising: a cannula body having a proximal portion, a distal portion, and a plurality of axially spaced notches that allow the distal portion of the cannula body to be separated from the proximal portion of the cannula body in the presence of a shearing or twisting force, wherein the distal portion of the cannula body has a dimension that allows the distal portion to be completely enclosed within a body cavity after the distal portion is separated from the proximal portion.
Claim 19
Dependent Claim
89 words
A cannula for use in delivering therapeutic material, comprising: a cannula body having a proximal portion, a distal portion, and a plurality of axially spaced notches that allow the distal portion of the cannula body to be separated from the proximal portion of the cannula body in the presence of a shearing or twisting force, wherein the distal portion of the cannula body has a dimension that allows the distal portion to be completely enclosed within a body cavity after the distal portion is separated from the proximal portion.
Claim 20
Dependent Claim
92 words
A cannula for use in delivering therapeutic material, comprising: a cannula body having a proximal portion, a distal portion, and a plurality of notches circumferentially offset from each other that allow the distal portion of the cannula body to be separated from the proximal portion of the cannula body in the presence of a shearing or twisting force, wherein the distal portion of the cannula body has a dimension that allows the distal portion to be completely enclosed within a body cavity after the distal portion is separated from the proximal portion.
Claim 21
Dependent Claim
92 words
A cannula for use in delivering therapeutic material, comprising: a cannula body having a proximal portion, a distal portion, and a plurality of notches circumferentially offset from each other that allow the distal portion of the cannula body to be separated from the proximal portion of the cannula body in the presence of a shearing or twisting force, wherein the distal portion of the cannula body has a dimension that allows the distal portion to be completely enclosed within a body cavity after the distal portion is separated from the proximal portion.
Claim 22
Dependent Claim
92 words
A cannula for use in delivering therapeutic material, comprising: a cannula body having a proximal portion, a distal portion, and a detachment structure, the detachment structure allowing the distal portion of the cannula body to be separated from the proximal portion of the cannula body; wherein the distal portion of the cannula body has a dimension that allows the distal portion to be completely enclosed within a body cavity after the distal portion is separated from the proximal portion of the cannula body, and wherein the cannula body comprises a bioabsorable material.
Claim 23
Dependent Claim
92 words
A cannula for use in delivering therapeutic material, comprising: a cannula body having a proximal portion, a distal portion, and a detachment structure, the detachment structure allowing the distal portion of the cannula body to be separated from the proximal portion of the cannula body; wherein the distal portion of the cannula body has a dimension that allows the distal portion to be completely enclosed within a body cavity after the distal portion is separated from the proximal portion of the cannula body, and wherein the cannula body comprises a bioabsorable material.
Claim 24
Dependent Claim
123 words
The cannula for use in delivering therapeutic material, comprising: a cannula body having a proximal portion, a distal portion, a lumen extending through the body, and a detachment structure, the detachment structure allowing the distal portion of the cannula body to be separated from the proximal portion of the cannula body; wherein the distal portion of the cannula body has a dimension that allows the distal portion to be completely enclosed within a body cavity after the distal portion is separated from the proximal portion of the cannula body, the cannula body comprising a plurality of the openings in fluid communication with the lumen, each of the plurality of openings comprising a transverse opening proximal to the distal tip of the cannula body.
Claim 25
Dependent Claim
123 words
The cannula for use in delivering therapeutic material, comprising: a cannula body having a proximal portion, a distal portion, a lumen extending through the body, and a detachment structure, the detachment structure allowing the distal portion of the cannula body to be separated from the proximal portion of the cannula body; wherein the distal portion of the cannula body has a dimension that allows the distal portion to be completely enclosed within a body cavity after the distal portion is separated from the proximal portion of the cannula body, the cannula body comprising a plurality of the openings in fluid communication with the lumen, each of the plurality of openings comprising a transverse opening proximal to the distal tip of the cannula body.
Claim 26
Dependent Claim
16 words
The cannula of claim 20 , wherein the transverse openings are circumferentially offset from each other.
Claim 27
Dependent Claim
16 words
The cannula of claim 20 , wherein the transverse openings is arranged into axially spaced groups.
Claim 28
Dependent Claim
18 words
The cannula of claim 20 , wherein each transverse opening group comprises a plurality of axially aligned openings.
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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) | 2007-05-04 | 2007-11-03 | 2008-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-05-04 | 2011-11-03 | 2012-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-05-04 | 2015-11-03 | 2016-05-04 | $7700.00 | Window Closed / Lapsed |