[미국특허]
Minimally invasive surgical assembly and methods
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61B-017/28
A61B-017/34
A61B-017/29
A61B-017/221
A61B-090/50
A61B-090/57
A61B-017/068
A61B-017/122
A61B-017/00
A61F-002/00
출원번호
US-0345716
(2016-11-08)
등록번호
US-10166038
(2019-01-01)
발명자
/ 주소
Ravikumar, Sundaram
Alward, H. Allan
Wysocki, Steven J.
Osborne, Guy L.
Smith, Robert F.
출원인 / 주소
Teleflex Medical Incorporated
대리인 / 주소
Baker Hostetler LLP
인용정보
피인용 횟수 :
0인용 특허 :
37
초록▼
A minimally invasive surgical assembly broadly includes an outer hollow needle which has an outer diameter of 3.0 mm or smaller, and a coaxial surgical instrument having a shaft which extends through the outer hollow needle. The coaxial surgical instrument includes end effectors at the end of the sh
A minimally invasive surgical assembly broadly includes an outer hollow needle which has an outer diameter of 3.0 mm or smaller, and a coaxial surgical instrument having a shaft which extends through the outer hollow needle. The coaxial surgical instrument includes end effectors at the end of the shaft which are biased to an open position such that when the end effectors of the surgical instrument extended out of the needle they open, and they are closed by relative movement of the needle over them. The assembly preferably includes a first fixing element which is used to fix the relative location of the surgical instrument and the needle. The assembly also preferably includes a second fixing element which moves relative to the needle and is located on the outside thereof and which is used to fix the relative location of the needle to the patient.
대표청구항▼
1. A surgical assembly, comprising: a hollow needle having an outer diameter of 3 mm or smaller and a sharp distal end,a first handle coupled to a proximal portion of said hollow needle,a surgical instrument having a shaft which extends through said hollow needle and including end effectors at an en
1. A surgical assembly, comprising: a hollow needle having an outer diameter of 3 mm or smaller and a sharp distal end,a first handle coupled to a proximal portion of said hollow needle,a surgical instrument having a shaft which extends through said hollow needle and including end effectors at an end of said shaft which are biased open,a plunger coupled to a proximal portion of said shaft and coupled to said first handle, said plunger configured for longitudinal movement relative to said first handle, anda safety mechanism configured to establish a predetermined working range for said surgical instrument,wherein said end effectors have opposed distal tips that are substantially separated from one another in a first extended position and that are disposed in proximate contact to one another in a second extended position,wherein the end effectors are moveable relative to the hollow needle to a retracted position wherein the opposed distal tips of the end effectors are positioned proximal relative to the sharp distal end of the hollow needle to thereby expose the sharp distal end, andwherein said predetermined working range includes the first extended position and the second extending position, and said safety mechanism includes a stop body biased to limit proximal movement of said surgical instrument relative to said hollow needle beyond said predetermined working range thereby preventing said surgical instrument from being moved from said predetermined working range to said retracted position, said stop body being biased towards a central axis of said plunger to interfere with said plunger to limit proximal movement of said surgical instrument relative to said hollow needle beyond said predetermined working range. 2. The surgical assembly according to claim 1, wherein said hollow needle has an inner surface and said shaft has an outer surface, and said outer surface and said inner surface are sized so that at least a portion of said shaft interferingly slides against said inner surface of said hollow needle, thereby forming a seal which is effective against desufflation. 3. The surgical assembly according to claim 1, further comprising a fixing element coupled to and movable relative to said hollow needle for fixing a relative location of said hollow needle to a patient. 4. The surgical assembly according to claim 3, wherein said fixing element comprises a suction cup extending around said hollow needle. 5. The surgical assembly according to claim 1, wherein said hollow needle is between 13 cm and 18 cm long. 6. The surgical assembly according to claim 1, wherein said end effectors open to a distance between them of more than twice a diameter of said hollow needle. 7. The surgical assembly according to claim 1, wherein said end effectors have first portions coupled to said shaft and extending substantially parallel to a longitudinal axis of said shaft, second portions which angle away from said longitudinal axis at between 6° and 18° in the first extended position, and third portions which angle back from said second portions toward said longitudinal axis. 8. The surgical assembly according to claim 7, wherein said third portions are substantially parallel to said longitudinal axis. 9. The surgical assembly according to claim 1, wherein the hollow needle has a central axis and the sharp distal end of said hollow needle has an end wall angled at substantially 35° relative to the central axis. 10. The surgical assembly according to claim 1, wherein the end effectors are moveable relative to the hollow needle to a partially-extended position wherein the opposed distal tips of the end effectors are positioned outside but close to the sharp distal end of the outer hollow needle such that the end effectors act as an obturator for protecting against accidental trauma caused by the sharp distal end of the outer hollow needle. 11. The surgical assembly according to claim 1, wherein a longitudinal groove is formed on said plunger, said longitudinal groove having a stop surface at a distal portion of said plunger, and wherein said longitudinal groove receives a member of said stop body and said stop surface engages said member of said stop body to limit proximal movement of said surgical instrument relative to said hollow needle beyond said predetermined working range. 12. The surgical assembly according to claim 11, further comprising a second handle coupled to a proximal portion of said plunger via a rotational linkage. 13. The surgical assembly according to claim 12, wherein said plunger has a tubular opening formed in a proximal end of said plunger, and said tubular opening receives a post of said second handle. 14. The surgical assembly according to claim 13, wherein the post has an annular groove formed therein, and said groove receives a pin through a pin hole formed in said plunger to couple said second handle to said plunger while permitting relative rotation therebetween. 15. The surgical assembly according to claim 1, wherein a member of said stop body includes a nose, and said stop body is rotatably coupled to said first handle,wherein said plunger includes a groove, andwherein the nose of said stop body and the groove of said plunger interact with each other to limit proximal movement of said surgical instrument relative to said hollow needle to prevent said surgical instrument from being moved from said predetermined working range back to said retracted position. 16. The surgical assembly according to claim 15, wherein the groove of said plunger has a flattened distal portion forming a stop surface,wherein the nose has a bottom surface, and said stop body is biased such that the bottom surface extends generally perpendicular to an axis of said plunger, andwherein the stop surface interacts with the bottom surface of said stop body to limit proximal movement of said surgical instrument relative to said hollow needle. 17. The surgical assembly according to claim 1, wherein said first handle has an outer surface including a lower ribbed portion and an upper ribbed portion, andwherein said first handle includes a hourglass shaped waist between the lower ribbed portion and the upper ribbed portion. 18. The surgical assembly according to claim 17, wherein the upper ribbed portion includes an opening for housing said safety mechanism.
Hasson Harrith M. (2043 N. Sedgwick Chicago IL 60614) Marlow Scott C. (12441 Bentbrook Dr. Chesterland OH 44026) D\Alo Herbert F. (37 Forest Hills Dr. Madison CT 06443) Marlow Clifford A. (35469 Ridg, Laparoscopic cannula.
Kramer George C. (5 Tiki Cir. Galveston TX 77554) Thomas William B. (Fremont CA) Wilson Jay (Portola Valley CA), System and method for rapid vascular drug delivery.
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