IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0866109
(2001-05-25)
|
발명자
/ 주소 |
- Green, II, Harry Leonard
- Wallin, Joshua K.
- Morejohn, Dwight P.
- Taylor, Charles S.
- Weller, Gary B.
- Ferrari, Richard M.
|
출원인 / 주소 |
- Cardiothoracic System, Inc.
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대리인 / 주소 |
Law Office of Alan W. Cannon
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인용정보 |
피인용 횟수 :
5 인용 특허 :
179 |
초록
▼
In accordance with the present invention, there is disclosed surgical methods and apparatus for accessing and stabilizing the heart. The methods and apparatus facilitate access to an anastomosis site, allows various instruments or devices to be maneuvered and secured in place, and provide stabilizat
In accordance with the present invention, there is disclosed surgical methods and apparatus for accessing and stabilizing the heart. The methods and apparatus facilitate access to an anastomosis site, allows various instruments or devices to be maneuvered and secured in place, and provide stabilization of the heart. The apparatus may involve a tissue stabilizer, and in particular a tissue stabilizer for use in immobilizing or stabilizing a portion of the beating heart using a compressive force delivered to the heart via the tissue stabilizer. The stabilizer may include a stabilizer base and a shaft. The shaft may be secured within an appropriate instrument mount preferably fixed to a retractor or other stable platform as disclosed herein. The stabilizers of the present invention provide improved access to a surgical site at a target vessel on the surface of the heart and may include features which facilitate optimal presentation of the target vessel.
대표청구항
▼
In accordance with the present invention, there is disclosed surgical methods and apparatus for accessing and stabilizing the heart. The methods and apparatus facilitate access to an anastomosis site, allows various instruments or devices to be maneuvered and secured in place, and provide stabilizat
In accordance with the present invention, there is disclosed surgical methods and apparatus for accessing and stabilizing the heart. The methods and apparatus facilitate access to an anastomosis site, allows various instruments or devices to be maneuvered and secured in place, and provide stabilization of the heart. The apparatus may involve a tissue stabilizer, and in particular a tissue stabilizer for use in immobilizing or stabilizing a portion of the beating heart using a compressive force delivered to the heart via the tissue stabilizer. The stabilizer may include a stabilizer base and a shaft. The shaft may be secured within an appropriate instrument mount preferably fixed to a retractor or other stable platform as disclosed herein. The stabilizers of the present invention provide improved access to a surgical site at a target vessel on the surface of the heart and may include features which facilitate optimal presentation of the target vessel. provide a counter-force for bonding operation; further advancing the web over the work-area whilst continuing to maintain the shuttle stationary with respect to the work-area, until the required length of plastics material for the finished liner extends beyond a closure station downstream of the shuttle; providing at the closure station a pair of separator boards disposed one each side of the web and each projecting between the folded material defining the gusset panels thereby separating the upper and lower gusset panels; effecting at the closure station upper and lower weld seams across the width of the web thereby to join the upper and lower layers to the respective upper and lower gusset panels with the weld seams on each layer being in a generally V-shaped configuration thereby to form an end panel at a second end region of the liner; and cutting the plastics material from the web so at least partially completing the liner. 2. A method as claimed in claim 1, wherein an end panel is formed at the first end of the liner by welding seams across the width of the web in substantially the same manner as at the second end region of the liner, or by cutting the web with a predetermined profile in readiness for the attachment thereto of a separate end panel. 3. A method as claimed in claim 1, wherein simultaneously with the welding of seams to form the second end of the liner, further adjacent seams are welded to form the first end of the next liner to be manufactured. 4. A method as claimed in claim 1, wherein the bonding operation is selected from the group consisting of an adhesive bonding step, a chemical fusion step and a thermal welding step. 5. A method as claimed in claim 1, wherein the attachment secured to the plastics material is at least one of a suspension device and a retention device for the liner, when in use. 6. A method as claimed in claim 1, wherein the attachment comprises at least one access pipe to give access to the interior of the liner, a cutting step being performed before bonding the access pipe to the plastics material in which cutting step an opening is formed through the liner at the required location for the access pipe, with the shuttle acting as a counter-force during the cutting step. 7. A method as claimed in claim 6, wherein the end portion of a length of plastics material pipe to form the access pipe is engaged with a corresponding surface of the plastics material of the liner around the opening formed therein, the engaging surfaces then being bonded together. 8. A method as claimed in claim 1, wherein the shuffle is maintained stationary within the folded-flat plastics material during the advancement thereof by interaction of permanent or electro-magnetic materials provided respectively on the shuttle and the associated work-area, whereby each shuttle magnet may directly co-act with a corresponding magnet on the work-area. 9.A method as claimed in claim 1, wherein the shuttle is provided with at least one roller and there is at least one further roller mounted externally of the plastics material to interact with the shuttle roller through a layer of the plastics material, thereby to maintain the shuttle substantially stationary during advancement of the web. 10. A method as claimed in claim 1, wherein the shuttle runs on the or each layer of the plastics sheet material below the shuttle and supported on the work-area, by means of at least one running roller or freely rotatable ball provided on the underside of the shuttle. 11. A method as claimed in claim 1, wherein the shuttle has motor-driven supporting wheels and a remote control system is used to control the driving of the wheels to maintain the shuttle stationary during advancement of the web. 12. A method as claimed in claim 1, wherein the web of folded-flat sheet plastics material has two opposed long edges, and the shuttle is held stationary by an arm projecting laterally therefrom and secured to a fixed component, which arm exte
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