IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
UP-0385208
(2003-03-10)
|
| 등록번호 |
US-7655021
(2010-03-31)
|
|
발명자
/ 주소 |
- Brasington, Evan
- Madden, Michael
|
| 출원인 / 주소 |
- Boston Scientific Scimed, Inc.
|
| 인용정보 |
피인용 횟수 :
9 인용 특허 :
60 |
초록
▼
The invention relates to a dilator having an expandable member and relates to a dilator and access sheath assembly including a first conduit which includes a wall defining a lumen therethrough and which is sufficiently rigid to dilate tissue in a body vessel; a member coaxially surrounding a first s
The invention relates to a dilator having an expandable member and relates to a dilator and access sheath assembly including a first conduit which includes a wall defining a lumen therethrough and which is sufficiently rigid to dilate tissue in a body vessel; a member coaxially surrounding a first section of the first conduit, where the member is capable of expanding; and a second conduit coaxially surrounding a second section of the first conduit.
대표청구항
▼
What is claimed is: 1. An apparatus, comprising: a flexible sheath having a proximal end portion and a distal end portion, the flexible sheath having a hub at the proximal end portion, the flexible sheath defining an opening at the proximal end portion, an opening at the distal end portion and a lu
What is claimed is: 1. An apparatus, comprising: a flexible sheath having a proximal end portion and a distal end portion, the flexible sheath having a hub at the proximal end portion, the flexible sheath defining an opening at the proximal end portion, an opening at the distal end portion and a lumen therethrough, the flexible sheath configured to be inserted into a body of a patient; and a dilator disposed within the lumen of the flexible sheath such that the dilator extends through the opening at the distal end portion of the flexible sheath and the opening at the proximal end portion of the flexible sheath, the dilator including a tapered portion configured to dilate tissue within the body of the patient and an expandable portion configured to expand outwardly from the dilator, the dilator having a hub including a flange and a tab, the tab having a fixed end coupled to the hub of the dilator, the tab having a free end, the tab having a protrusion extending substantially perpendicular to a longitudinal axis of the dilator disposed between the fixed end and the free end, the dilator being configured such that distal and proximal movement of the dilator relative to the flexible sheath is limited when the hub of the dilator is positioned such that the protrusion of the tab is configured to engage a ridge extending inwardly from an internal surface of the hub of the flexible sheath and the flange is configured to engage an outside surface of the ridge of the flexible sheath, the free end of the tab being disposed outside the hub of the flexible sheath when the protrusion is situated to engage the ridge of the internal surface of the hub of the flexible sheath. 2. The apparatus of claim 1, wherein a proximal end portion of the dilator is removably coupled to the proximal end portion of the flexible sheath. 3. The apparatus of claim 1, wherein the first hub is configured to be removably coupled to the second hub. 4. The apparatus of claim 1, wherein: the second hub includes an inner receiving portion, the inner receiving portion including the ridge and being a portion of the lumen and being configured to receive and engage the protrusion such that the first hub can be lockably coupled to the second hub via the protrusion to resist distal and proximal movement of the dilator relative to the flexible sheath. 5. The apparatus of claim 1, wherein the dilator defines a lumen therethrough, the lumen configured to receive a portion of a guide wire. 6. The apparatus of claim 1, wherein the dilator defines a lumen therethrough, the lumen configured to supply a fluid to the expandable portion. 7. The apparatus of claim 1, wherein the expandable portion of the dilator is disposed outside of the lumen defined by the flexible sheath. 8. The apparatus of claim 1, wherein the dilator is constructed from a material having a durometer value of between 40 and 80 on the Shore A scale. 9. The apparatus of claim 1, wherein an outer surface of at least one of the dilator or the flexible sheath includes a hydrophilic coating. 10. The apparatus of claim 1, wherein the expandable member of the dilator is used to place the flexible sheath in a specified location in a ureter. 11. The apparatus of claim 1, wherein the hub of the flexible sheath and the hub of the dilator are lockably coupled to resist proximal movement of the dilator relative to the flexible sheath when the flexible sheath is being placed. 12. The apparatus of claim 1, wherein the such that the tab can be actuated via the free end of the tab when the protrusion is situated to engage the ridge inside the hub of the flexible sheath. 13. The apparatus of claim 1, wherein the tab has a longitudinal axis that is non-parallel to a longitudinal axis of the flexible sheath, and the expandable portion is configured to be expanded to dilate a lumen of a body when the protrusion is situated to engage a surface inside the hub of the flexible sheath. 14. The apparatus of claim 1, wherein the tab is configured to be moved between a first position and a second position such that the hub of the dilator can be coupled to the hub of the flexible sheath, the expandable portion is configured to be expanded when the protrusion is configured to engage the ridge of the hub of the flexible sheath. 15. The apparatus of claim 1, wherein: the free end of the tab is disposed proximally with respect to the ridge when the protrusion is situated to engage the ridge; and the fixed end of the tab is disposed distally with respect to the ridge when the protrusion is situated to engage the ridge. 16. An apparatus, comprising: a flexible sheath having a proximal end portion and a distal end portion, the flexible sheath defining an opening at the proximal end portion, an opening at the distal end portion and a lumen therethrough, the flexible sheath configured to be inserted into a body of a patient; a dilator disposed within the lumen of the flexible sheath such that the dilator extends through the opening at the distal end portion of the flexible sheath and the opening at the proximal end portion of the flexible sheath, the dilator including a tapered portion configured to dilate tissue within the body of the patient and an expandable portion configured to expand outwardly from the dilator; a first hub coupled to the proximal end portion of the dilator, the first hub including a tab and a flange separate from the tab, the tab having a first end and a second end, the tab being coupled at the first end to the first hub; and a second hub coupled to a proximal end portion of the flexible sheath, the second hub including a receiving portion having a protrusion extending radially inward from an inner sidewall of the receiving portion, the protrusion having an inner surface and an outer surface opposite the inner surface, the receiving portion configured to receive a portion of the tab, the inner surface of the protrusion configured to engage the tab and the outer surface configured to engage the flange such that the first hub can be lockably coupled to the second hub, thereby resisting relative motion between the dilator and the flexible sheath, the second end of the tab is disposed outside the receiving portion when the first hub is lockably coupled to the second hub. 17. The apparatus of claim 16, wherein the tab has a first position, in which the dilator can be moved relative to the flexible sheath, and a second position, in which the first hub is lockably coupled to the second hub. 18. The apparatus of claim 16, wherein the expandable portion of the dilator is disposed outside of the lumen defined by the flexible sheath. 19. The apparatus of claim 16, wherein the dilator defines a lumen therethrough, the lumen configured to receive a portion of a guide wire. 20. The apparatus of claim 16, wherein the dilator defines a lumen therethrough, the lumen configured to supply a fluid to the expandable portion. 21. The apparatus of claim 16, wherein the dilator is constructed from a material having a durometer value of between 40 and 80 on the Shore A scale. 22. The apparatus of claim 16, wherein an outer surface of at least one of the dilator or the flexible sheath includes a hydrophilic coating. 23. The apparatus of claim 16, wherein the dilator and the flexible sheath are lockably coupled using the first hub and the second hub to facilitate placement of the dilator and the flexible sheath in a ureter of a patient. 24. The apparatus of claim 16, wherein the expandable portion of the dilator is used to place the flexible sheath in a specified location in a ureter of a patient. 25. The apparatus of claim 16, wherein the first end of the tab is within the first hub when the first hub is lockably coupled to the second hub, the receiving portion of the second hub is a portion of the lumen, and the first hub has a flange disposed outside of the second hub when the first hub is lockably coupled to the second hub via the tab. 26. The apparatus of claim 16, wherein the tab is configured to be moved between a first position and a second position, the first hub is configured to be lockably coupled to the second hub when the tab is in the second position, the tab is biased towards the second position. 27. The apparatus of claim 16, wherein the tab has a longitudinal axis biased away from to a longitudinal axis of the dilator. 28. The apparatus of claim 16, wherein the first hub is configured to be lockably coupled to the second hub when at least a portion of the first hub is disposed within the second hub in a first position, the first hub is configured to be moved from the first position to a second position disposed outside of the second hub when the tab is actuated and the first hub is moved proximally relative to the second hub. 29. The apparatus of claim 16, wherein the tab is one and only one tab extending radially from the first hub.
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