IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0427616
(2006-06-29)
|
등록번호 |
US-7758501
(2010-08-09)
|
발명자
/ 주소 |
- Frasier, William
- Beaudoin, Paul
|
출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
68 인용 특허 :
173 |
초록
▼
A surgical retractor includes a plurality of blade assemblies interconnected by a plurality of racks. One or more of the blade assemblies is movable along a rack to selectively expand the retractor. At least one of the blade assemblies includes a blade that is rotatably connected to the blade assemb
A surgical retractor includes a plurality of blade assemblies interconnected by a plurality of racks. One or more of the blade assemblies is movable along a rack to selectively expand the retractor. At least one of the blade assemblies includes a blade that is rotatably connected to the blade assembly and that is rotatable independent of other blades of the retractor.
대표청구항
▼
The invention claimed is: 1. A refractor comprising: a first blade assembly defining a first housing having a top surface, a bottom surface, a first side surface connecting the top surface and the bottom surface, and a second side surface connecting the top surface and the bottom surface, the first
The invention claimed is: 1. A refractor comprising: a first blade assembly defining a first housing having a top surface, a bottom surface, a first side surface connecting the top surface and the bottom surface, and a second side surface connecting the top surface and the bottom surface, the first side surface intersecting and oriented perpendicular to the second side surface, the first housing having a first opening between the top surface and the bottom surface and second opening between the top surface and the bottom surface and spaced apart from the first opening, the first opening opposite the first side surface and the second opening opposite the second side surface, the first blade assembly having a first blade having a proximal end and a distal end, the proximal end of the first blade including a rotation opening, the proximal end of the first blade including the rotation opening positioned within the first housing, the first blade extending through the first opening in the first housing such that the distal end of the first blade is positioned outside of the first housing, the first blade assembly including a second blade having a proximal end and a distal end, the proximal end of the second blade including a rotation opening, the proximal end of the second blade including the rotation opening positioned within the first housing, the second blade extending through the second opening in the first housing such that the distal end of the second blade is positioned outside of the first housing; and a second blade assembly defining a second housing having a top surface, a bottom surface, a first side surface connecting the top surface and the bottom surface, and a second side surface connecting the top surface and the bottom surface, the first side surface intersecting and oriented perpendicular to the second side surface, the second housing having a first opening between the top surface and the bottom surface and second opening between the top surface and the bottom surface spaced apart from the first opening, the first opening opposite the first side surface and the second opening opposite the second side surface, the second blade assembly having a third blade having a proximal end and a distal end, the proximal end of the third blade including a rotation opening, the proximal end of the third blade including the rotation opening positioned within the second housing, the third blade extending through the first opening in the second housing such that the distal end of the third blade is positioned outside of the second housing, the second blade assembly including a fourth blade having a proximal end and a distal end, the proximal end of the fourth blade including a rotation opening, the proximal end of the fourth blade including the rotation opening positioned within the second housing, the fourth blade extending through the second opening in the second housing such that the distal end of the fourth blade is positioned outside of the second housing connected thereto, a first rack connecting the first blade assembly and the second blade assembly, a first end of the first rack positioned in the first housing and a second end of the first rack positioned in the second housing, at least one of the first blade assembly and the second blade assembly being movable along the first rack, a second rack connecting the first blade assembly and the second blade assembly, a first end of the second rack positioned in the first housing and a second end of the second rack positioned in the second housing, at least one of the first blade assembly and the second blade assembly being movable along the second rack, the retractor being adjustable between a closed configuration in which the first blade assembly and second blade assembly are proximate one another at least the proximal end thereof and an expanded configuration in which the first blade assembly and the second blade assembly are displaced from another and wherein the first rack extends through the rotation opening of the first blade, the first blade being rotatable about the first rack, and the second rack extends through the rotation opening of the third blade, the third blade being rotatable about the second rack. 2. The retractor of claim 1, wherein the first blade is rotatably connected to the first blade assembly and is rotatable independent of the second blade relative to the first blade assembly, and the third blade is rotatably connected to the second blade assembly and is rotatable independent of the fourth blade relative to the second blade assembly. 3. The retractor of claim 1, wherein, the first blade is rotatably connected to the first blade assembly and is rotatable independent of the second blade relative to the first blade assembly, and the fourth blade is rotatably connected to the second blade assembly and is rotatable independent of the third blade relative to the second blade assembly. 4. The retractor of claim 1, wherein, the second blade is rotatably connected to the first blade assembly and is rotatable independently of the first blade relative to the first blade assembly, and the third blade is rotatably connected to the second blade assembly and is rotatable independent of the fourth blade relative to the second blade assembly. 5. The retractor of claim 1, wherein, the second blade is rotatably connected to the first blade assembly and is rotatable independently of the first blade relative to the first blade assembly, and the fourth blade is rotatably connected to the second blade assembly and is rotatable independent of the third blade relative to the second blade assembly. 6. The retractor of claim 1, wherein, the first blade is rotatably connected to the first blade assembly and is rotatable independent of the second, third, and fourth blades. 7. The retractor of claim 1, wherein, the second blade is rotatably connected to the first blade assembly and is rotatable independent of the first, third and fourth blades. 8. The retractor of claim 1, wherein the third blade is rotatably connected to the second blade assembly and is rotatable independent of the first, second, and fourth blades. 9. The retractor of claim 1, wherein, the fourth blade is rotatably connected to the second blade assembly and is rotatable independent of the first, second and third blades. 10. The retractor of claim 1, wherein the blades contact adjacent blades along a length of the blades to form a continuously enclosed working channel when the retractor is in the closed configuration. 11. The retractor of claim 10, wherein the working channel has an approximately circular cross section when the retractor is in the closed configuration. 12. The retractor of claim 1 wherein the first and second racks are contained within the first and second blade assemblies. 13. The retractor of claim 1, wherein the retractor is adjustable to a fully expanded configuration in which the first blade assembly and the second blade assembly are fully displaced from one another. 14. The retractor of claim 1 further comprising, a gear positioned in the first housing of the first blade assembly, the gear engaging the first rack to facilitate movement of the first blade assembly relative to the second blade assembly. 15. The retractor of claim 1, wherein the blades each comprise a primary blade connected to the blade assembly, and an adjustable blade operatively coupled to the primary blade and adjustable relative to the primary blade along a longitudinal axis of the primary blade. 16. The retractor of claim 1, further comprising: a first blade adjustment mechanism for selectively adjusting the rotational position of the first blade and a third blade adjustment mechanism for selectively adjusting the rotational position of the third blade.
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