|Publication number||US3817251 A|
|Publication date||Jun 18, 1974|
|Filing date||Oct 4, 1972|
|Priority date||Oct 4, 1972|
|Publication number||US 3817251 A, US 3817251A, US-A-3817251, US3817251 A, US3817251A|
|Original Assignee||Hasson H|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (4), Referenced by (128), Classifications (12)|
|External Links: USPTO, USPTO Assignment, Espacenet|
United States Patent 1191 1111 3,817,251 Hasson June 18, 1974  LAPAROSCOPE CANNULA 2,185,927 1/1940 Shelanski 128/245 x 2,707,957 5/1955 5 11 128/348  Inventor: Harm Hasmn, 6942 N 3,707,146 12/1972 123/2 R Waukesha Ave., Chicago, 111. 60646 Filed: Oct. 4, 1972 Appl. No.1 298,765
US. Cl. 128/348, 128/2 R Int. Cl A6lm 25/00 Field of Search 128/348, 349 R, 349 B, 128/349 BV, 350 R, 350 V, 21M, 218 R, 218
Primary ExaminerLucie H. Laudenslager Attorney, Agent, 0r'Firm-Ge0r ge H. Gerstman [5 7] ABSTRACT A cannula is provided for laparoscopy, which cannula includes an adjustable cone-shaped sleeve for blocking the incisional gap and maintaining the pneumoperitoneum. The cannula also includes a pair of books for receiving a suture to maintain the cannula in place with respect to the patients abdomen.
5 Claims, 6 Drawing Figures LAPAROSCOPE CANNULA BACKGROUND OF THE INVENTION The laparoscope (peritoneoscope, celioscope) is an important tool of modern gynecologic diagnosis and surgical treatment. A prior art technique of laparoscopy requires the introduction of a needle into the peritoneal cavity to establish a pneumoperitoneum, and the abdominal wall is then punctured with a cannula, bearing a sharp trochar. Both of these steps are performed blindly, and there is thus the possibility of accidentally puncturing a vital organ or a blood vessel. The trochar is subsequently withdrawn, and the lighted laparoscope is inserted through the cannula into the peritoneal cavity for visualization.
Another technique of performing laparoscopy is discussed in my article in the American Journal of Obstetrics and Gynecology, St. Louis, Vol. 110, No. 6, pages 886-887, July 15, l97l. In this technique, a laparoscope cannula with a trumpet valve is fitted with a thin, coneshaped steel sleeve, mounted on the cannulas shaft. The cone sleeve may be fitted with an extender to accommodate variations in the thickness of the abdominal wall and in the distance between the umbilicus and the symphysis pubis.
The purpose of the conical sleeve is to seal the peritoneal and fascial gap, by advancing the cone deeper through the incisional opening. Although the use of such a cannula hasbeen found generally satisfactory, certain problems were noted. These problems included the occasional occurrence of gas leaks, the need for an assistant to hold the cannula in place while the scope was being withdrawn or manipulated, and the need to use several cannulas of different sizes to accommodate individual variations in the thickness of the abdominal wall. i
The present invention is directed toward the obvia tion of the aforementioned problems.
BRIEF DESCRIPTION OF THE INVENTION In accordance with the present invention, there is provided a laparoscope cannula which comprises a proximal shaft portion'forming the inlet to receive a blunt obturator and a laparoscope; a distal shaft portion for insertion into the abdominal cavity of a patient; and gas valve means coupling the proximal shaft portion and the distal shaft portion. A generally truncated cone-shaped sleeve is positioned on the distal shaft portion, with the base of the cone facing toward the proximal shaft portion. Means are provided for adjustably positioning the sleeve along the distal shaft portion whereby selectively variable length protrusion segments may be provided.
In the illustrative embodiment, the cannula further includes means, such as hooks, carried thereby for receiving a suture, to maintain the cannulain place with respect to the patients abdomen.
A more detailed explanation of the invention is provided in the following description and claims, and is illustrated in the accompanying drawing.
BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is a front elevation of a laparoscope cannula constructed in accordance with the principles of the present invention, showing a blunt obturator in dashed line and showing in phantom the possible movement of the sleeve;
FIG. 2 is a top plan view of the left half of the laparoscope cannula shown in FIG. 1;
FIG. 3 is an enlarged, fragmentary, cross-sectional view of the sleeve mounted on the distal shaft portion of the cannula of FIG. 1;
FIG. 4 is a cross-sectional view thereof, taken along the plane of line 44 of FIG. 3; I
FIG. 5 is a greatly enlarged, fragmentary view of the sleeveand distal shaft coupling; and
FIG. 6 is an elevational view of a conventional blunt obturator. I t
DETAILED DESCRIPTION OF THE ILLUSTRATIVE EMBODIMENT Referring to FIGS. 1 and 2 in particular, the cannula 10 therein shown includes a proximal shaft portion 12, a distal shaft portion 14, and gas'valve means 16 which couple the proximal shaft portion and the distal shaft portion. The shaft portions 12 and 14 are preferably stainless steel or chrome plated steel. Gas valve means 16 comprises a trumpet valve conventionally used in laparoscope cannulas.
At the front of proximal shaft portion 12 there is connected a rubber inlet 18 which defines acentral opening that is no smaller than the external diameter of a conventional blunt obturator 20 (FIG. 6) with the front end 22 of inlet 18 being of a size to provide an abutting relationship with end 24 of handle 26 of blunt obturator 20.
Distal shaft 14 defines three grooves 30, 31 and 32 about its circumference. These grooves are spaced and of a size to receive a ring carried by sleeve 34, as described below.
Sleeve 34 is preferably formed of stainless steel or chrome plated steel and is in the form of a truncated cone, with the base 36facingthe proximal shaft portion lZQBase. 36 includes an extension 37, to which a rubber.
washer-type member 38 isconnected, to achieve a snug, frictional fit with respect to the outer surface of shaft 14. Cone 34 is selectively locked in place along shaft 14 by means of a C-ring 40 carried within a groove 42 (FIG. 5) defined about "the internal circumference of sleeve 34. Ring 40 is fitted within groove 42 y to permit ring 40 to ride along the surface of shaft 14 until it overlies a groove 30, 31 or 32, at which time the ring 40 will enter the groove, as shown most clearly in FIGS. 3 and 5.
A pair of hooks 46, 47 are connected to valve 16, to receive sutures in order to maintain the cannula in place during laparoscopy. In this manner, there is no need for an assistant to hold the cannula in place while the scope is manipulated.
The operation is performed in the following manner. General anesthesia with endotracheal intubation is employed. A small curvilinear incision, two to four centimeters "long, is made through the skin of the anterior abdominal wall 0.5 to l centimeter below the lower edge of the umbilical fossa. The skin edges are retracted with two Allis clamps, then with a set of two small retractors. The subcutaneous adipose tissues are reflected to expose the linea alba.
Dissection is carried out mostly bluntly with the handle of the knife, sweeping the adipose tissues inferiorly, away from the umbilicus. The exposed deep fascia is then grasped with two Kocher clamps placed side by side transversely. The fascia is held forcibly upwards and incised transversely, for approximately 1.5 centimeters, a short distance below the aponeurotic umbilical ring. Two sutures are passed, one through each fascial edge, and tagged. The fascial sutures are held upwards and apart, and two retractors are placed laterally inside the fascial incision, creating a system of four-way retraction.
At this point, the properitoneal layer of adipose tissuecan be clearly viewed in most multiparous women. However, in many patients, usually nulliparous, a distinct fascial layer is present which has to be incised to expose the properitoneal adipose layer.
Blunt dissection of the adipose tissue followed by thrusting a small hemostat against the peritoneum is usually sufficient to create an opening in the peritoneal cavity. Occasionally, however, the peritoneaum has to be picked up and incised because of increased tensile strength.
A clear, adequate opening in the peritoneum, confirmed by viewing the small bowel and/or the omentum, is a useful step in the procedure. The peritoneal opening should be over one centimeter in diameter. The cannula is then readied by fixing the sleeve 30 in one of the three predetermined positions (with ring 40 engaging either groove 30, 31 or 32) depending upon the thickness of the abdominal wall.
One edge of the peritoneum is held with a small hemostat to guide the cannula 10 carrying the blunt obturator as it is inserted through the opening into the peritoneal cavity. The hemostat is then removed, allowing the peritoneal defect to slide freely downwards, as the cannula is placed through the abdominal wall in an obliquely slanted position. Alternatively, two small retractors may be placed'inside the peritoneal defect and the cannula 10 inserted through the opening between the retractors. If the cannula is not guided in its peritoneal insertion, it may slip away from the peritoneal opening into the properitoneal space.
The fascia] sutures are then tied snugly, one to each hook 46, 47 carried by valve 16, to prevent the escape of gas and to hold the cannula in place. Gas is insufflated through the cannula, creating a pneumoperitoneum. The blunt obturator 20 is withdrawn midway through the insufflation to permit a more rapid flow of gas. With the establishment of an adequate pneumoperitoneum, the lighted laparoscope is introduced through the cannula. After viewing, the abdominal wall is closed in layers.
It is seen that a device has been provided which enables laparoscopy through a small laparotomy incision. The device comprises a modified atraumatic laparoscope cannula that permits prompt insufflation of the peritoneal cavity with carbon dioxide or other gas, and subsequently seals the abdominal incision, preventing the escape of gas. Further, the cannula is maintained in place with a suture.
Although an illustrative embodiment of the invention has been shown and described, it is to be understood that various modifications and substitutions may be made by those skilled in the art without departing from the novel spirit and scope of the present invention.
What is claimed is:
1. A laparoscope cannula for use with a peritoneal cavity which comprises: a proximal shaft portion forming the inlet to receive a blunt obturator and a laparoscope; a distal shaft portion for insertion into the abdominal cavity of a patient; gas valve means coupling said proximal shaft portion and said distal shaft portion; a generally truncated cone-shaped sleeve positioned on said distal shaft portion, with the base of the cone facing toward said proximal shaft portion; and means for providing adjustable positioning of said sleeve along said distalshaft portion whereby selectively variable length protrusion segments may be provided, and further including rigid means carried by said cannula for receiving a suture, to maintain the cannula in place with respect to the patients abdomen.
2. A laparoscope cannula as described in claim 7, wherein said adjustable positioning means comprises means for enabling a snug, manually adjustable frictional fit between said sleeve and said distal shaft portion.
3. A laparoscope cannula as described in claim 2, wherein said distal shaft portion defines a plurality of grooves about its circumference and said sleeve carries means which hug the surface of said distal shaft portion and which enter each of said grooves when aligned therewith.
4. A laparoscope cannula as described in claim 1, wherein said suture-receiving means comprises a pair of hooks located adjacent said gas valve means.
5. A laparoscope cannula for use with a peritoneal cavity which comprises: a proximal shaft portion forming the inlet to receive a blunt obturator and a laparoscope; a distal shaft portion for insertion into the abdominal cavity of a patient; gas valve means coupling said proximal shaft portion and said distal shaft portion; rigid suture-receiving means carried by said cannula to maintain the cannula in place with respect to the patients abdomen; a generally truncated cone-shaped sleeve positioned on said distal shaft portion, with the base of the cone facing toward said proximal shaft portion, said distal shaft portion defining a plurality of grooves about its circumference and said sleeve carrying means which hug the surface of said distal shaft portion and which enter each of said grooves when aligned therewith.
UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3 3 7 251 Dated June 18. 1974 Inven fl Hgrrith M. Heggon It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:
Column 4, line 27, change "7" to 1 Signed end sealed this 15th day of October 1974.
(SEAL) Attest: v
McCOY M. GIBSON JR. C. MARSHALL DANN I AttestingOfficer Commissioner of Patents FORM PC4050 (10-69} USCOMM-DC 60376-P69 9! 0,5. GOVERNMENT PRINTING OFFICE I959 0-356-334
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US695470 *||Apr 29, 1901||Mar 18, 1902||Rudolph Krause||Syringe.|
|US2185927 *||Feb 16, 1937||Jan 2, 1940||Shelanski Herman A||Insufflator|
|US2707957 *||Sep 30, 1952||May 10, 1955||Kidde Mfg Co Inc||Tenaculum holder for uterine cannula|
|US3707146 *||Mar 7, 1967||Dec 26, 1972||Prod Res & Chem Corp||Means to inject a plastic into a cavity to produce a replica thereof|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US4422460 *||Apr 8, 1982||Dec 27, 1983||Cordis Corporation||Positionable locating and orienting wing for a pacing lead|
|US4610661 *||Jun 13, 1984||Sep 9, 1986||Possis Medical, Incorporated||Perfusion device|
|US4617933 *||Feb 19, 1980||Oct 21, 1986||Hasson Harrith M||Laparoscope cannula with improved suture receiving means|
|US4985033 *||Feb 28, 1990||Jan 15, 1991||Richard Wolf Gmbh||Apparatus for fixing fascial holding sutures in open laparoscopy|
|US5002557 *||Apr 6, 1989||Mar 26, 1991||Hasson Harrith M||Laparoscopic cannula|
|US5088979 *||Nov 2, 1990||Feb 18, 1992||Wilson-Cook Medical Inc.||Method for esophageal invagination and devices useful therein|
|US5104382 *||Jan 15, 1991||Apr 14, 1992||Ethicon, Inc.||Trocar|
|US5147316 *||Nov 19, 1990||Sep 15, 1992||Castillenti Thomas A||Laparoscopic trocar with self-locking port sleeve|
|US5176697 *||Sep 28, 1990||Jan 5, 1993||Hasson Harrith M||Laparoscopic cannula|
|US5226876 *||Feb 18, 1992||Jul 13, 1993||Wilson Cook Medical, Inc.||Operating channel/insufflation port assemblies|
|US5226890 *||Nov 13, 1991||Jul 13, 1993||United States Surgical Corporation||Tissue gripping device|
|US5257973 *||Feb 5, 1992||Nov 2, 1993||Raul Villasuso||Sealing sleeve and method for laparoscopy|
|US5269753 *||Jul 14, 1992||Dec 14, 1993||Wilk Peter J||Method for use in laparoscopic hernia repair|
|US5295993 *||Apr 30, 1991||Mar 22, 1994||United States Surgical Corporation||Safety trocar|
|US5318585 *||Jun 7, 1993||Jun 7, 1994||United States Surgical Corporation||Safety trocar|
|US5330501 *||Feb 3, 1993||Jul 19, 1994||United States Surgical Corporation||Tissue gripping device for use with a cannula and a cannula incorporating the device|
|US5336206 *||Apr 12, 1993||Aug 9, 1994||United States Surgical Corporation||Trocar penetration depth indicator and guide tube positioning device|
|US5350355 *||Feb 14, 1992||Sep 27, 1994||Automated Medical Instruments, Inc.||Automated surgical instrument|
|US5354283 *||Jan 7, 1994||Oct 11, 1994||Little Rapids Corporation||Trocar retention apparatus|
|US5356421 *||Oct 7, 1992||Oct 18, 1994||United States Surgical Corporation||Safety trocar with locking handles|
|US5370625 *||Apr 13, 1993||Dec 6, 1994||United States Surgical Corporation||Trocar guide tube positioning device|
|US5375588 *||Aug 17, 1992||Dec 27, 1994||Yoon; Inbae||Method and apparatus for use in endoscopic procedures|
|US5387196 *||May 19, 1992||Feb 7, 1995||United States Surgical Corporation||Cannula assembly having conductive cannula|
|US5441513 *||Mar 12, 1992||Aug 15, 1995||United States Surgical Corporation||Retracting tip trocar assembly|
|US5453094 *||Sep 17, 1993||Sep 26, 1995||Minnesota Mining And Manufacturing Company||Kit assembly for use during a laparoscopic surgical procedure|
|US5486190 *||Dec 7, 1994||Jan 23, 1996||United States Surgical Corporation||Safety trocar|
|US5522790 *||Mar 14, 1994||Jun 4, 1996||Origin Medsystems, Inc.||Retraction apparatus and methods for endoscopic surgery|
|US5527264 *||Feb 8, 1994||Jun 18, 1996||Origin Medsystem, Inc.||Methods of using endoscopic inflatable retraction devices|
|US5538497 *||Aug 5, 1994||Jul 23, 1996||Oktas||Endoscope having parasitic light elements|
|US5538509 *||Jan 31, 1994||Jul 23, 1996||Richard-Allan Medical Industries, Inc.||Trocar assembly|
|US5540648 *||Jul 13, 1994||Jul 30, 1996||Yoon; Inbae||Medical instrument stabilizer with anchoring system and methods|
|US5588949 *||Apr 13, 1994||Dec 31, 1996||Heartport, Inc.||Stereoscopic percutaneous visualization system|
|US5616131 *||Apr 18, 1995||Apr 1, 1997||Lasersurge, Inc.||Apparatus and method for anchoring surgical instrumentation|
|US5618309 *||Nov 10, 1994||Apr 8, 1997||Green; David T.||Cannula assembly having conductive cannula|
|US5626595 *||Oct 11, 1994||May 6, 1997||Automated Medical Instruments, Inc.||Automated surgical instrument|
|US5632758 *||Jul 5, 1994||May 27, 1997||Automated Medical Instruments, Inc.||Automated surgical instrument|
|US5634883 *||May 26, 1995||Jun 3, 1997||Origin Medsystems, Inc.||Apparatus for peritoneal retraction|
|US5643178 *||May 26, 1995||Jul 1, 1997||Origin Medsystems, Inc.||Method for peritoneal retration|
|US5653718 *||May 16, 1994||Aug 5, 1997||Yoon; Inbae||Cannula anchoring system|
|US5681341 *||Mar 14, 1995||Oct 28, 1997||Origin Medsystems, Inc.||Flexible lifting apparatus|
|US5697913 *||Aug 9, 1996||Dec 16, 1997||Ethicon Endo-Surgery, Inc.||Trocar including cannula with stepped region|
|US5697946 *||Oct 7, 1994||Dec 16, 1997||Origin Medsystems, Inc.||Method and apparatus for anchoring laparoscopic instruments|
|US5743850 *||Aug 24, 1994||Apr 28, 1998||Origin Medsystems, Inc.||Endoscopic inflatable retraction device with additional inflatable chamber|
|US5743851 *||Jun 4, 1996||Apr 28, 1998||Origin Medsystems, Inc.||Retraction apparatus and methods for endoscopic surgery|
|US5746720 *||Dec 18, 1995||May 5, 1998||Stouder, Jr.; Albert E.||Method and apparatus for insertion of a cannula and trocar|
|US5782813 *||Jun 19, 1995||Jul 21, 1998||Yoon; Inbae||Surgical instrument stabilizer|
|US5823945 *||Jun 5, 1997||Oct 20, 1998||Origin Medsystems, Inc.||Endoscopic inflatable retraction device with additional inflatable chamber|
|US5836871 *||Jun 10, 1996||Nov 17, 1998||Origin Medsystems, Inc.||Method for lifting a body wall using an inflatable lifting apparatus|
|US5855566 *||Jun 1, 1995||Jan 5, 1999||Urohealth, Inc. (California)||Trocar assembly|
|US5857999 *||May 5, 1995||Jan 12, 1999||Imagyn Medical Technologies, Inc.||Small diameter introducer for laparoscopic instruments|
|US5865728 *||Nov 21, 1995||Feb 2, 1999||Origin Medsystems, Inc.||Method of using an endoscopic inflatable lifting apparatus to create an anatomic working space|
|US5895350 *||Jul 16, 1997||Apr 20, 1999||Vista Medical Technologies, Inc.||Electronic endoscope|
|US5957832 *||Mar 11, 1996||Sep 28, 1999||Heartport, Inc.||Stereoscopic percutaneous visualization system|
|US5957888 *||Oct 10, 1995||Sep 28, 1999||United States Surgical Corporation||Surgical cannula having a variable length|
|US6152895 *||Sep 27, 1993||Nov 28, 2000||Wilk; Peter J.||Method for use in laparoscopic hernia repair|
|US6497716||Jan 24, 1995||Dec 24, 2002||United States Surgical Corporation||Safety trocar|
|US6508759 *||Oct 28, 1999||Jan 21, 2003||Heartport, Inc.||Stereoscopic percutaneous visualization system|
|US6524283||May 23, 1995||Feb 25, 2003||Sherwood Services Ag||Method and apparatus for anchoring laparoscopic instruments|
|US6605037||Oct 26, 1998||Aug 12, 2003||Sherwood Services Ag||Endoscopic inflatable retraction device|
|US6626826||Oct 20, 1999||Sep 30, 2003||S.S.H. Medical Limited||Examination device|
|US6905489||Apr 24, 2001||Jun 14, 2005||Northgate Technologies, Inc.||Laparoscopic insertion device|
|US7169159||Dec 23, 2002||Jan 30, 2007||United States Surgical Corporation||Safety trocar|
|US7235064||Feb 25, 2003||Jun 26, 2007||Sherwood Services Ag||Method and apparatus for anchoring laparoscopic instruments|
|US7601158 *||Oct 13, 2009||Colorado Catheter Company, Inc.||Devices for handling catheter assembly|
|US7758603||May 13, 2003||Jul 20, 2010||Applied Medical Resources Corporation||Blunt tip obturator|
|US7766823||Aug 11, 2003||Aug 3, 2010||Covidien Ag||Endoscopic inflatable retraction device, method of using, and method of making|
|US7766937||May 30, 2006||Aug 3, 2010||Mini-Lap Technologies, Inc.||Minimally invasive surgical assembly and methods|
|US8133255||Jan 19, 2007||Mar 13, 2012||Mini-Lap Technologies, Inc.||Minimally invasive surgical assembly and methods|
|US8152828||Jul 14, 2010||Apr 10, 2012||Applied Medical Resources Corporation||Blunt tip obturator|
|US8157833||Apr 17, 2012||Applied Medical Resources Corporation||Trocars with advanced fixation|
|US8162893||Jan 15, 2009||Apr 24, 2012||Applied Medical Resources Corporation||Trocar stability assembly|
|US8287503||Oct 16, 2012||Applied Medical Resources Corporation||Balloon trocar|
|US8313507||Nov 20, 2012||Mini-Lap Technologies, Inc.||Minimally invasive rake retractor and method for using same|
|US8377090||Feb 19, 2013||Applied Medical Resources Corporation||Blunt tip obturator|
|US8517977||Oct 8, 2007||Aug 27, 2013||Applied Medical Resources Corporation||Visual insufflation port|
|US8597250||Apr 24, 2012||Dec 3, 2013||Applied Medical Resources Corporation||Trocar stability assembly|
|US8608768||Mar 2, 2012||Dec 17, 2013||Applied Medical Resources Corporation||Blunt tip obturator|
|US8608769||Aug 3, 2012||Dec 17, 2013||Applied Medical Resources Corporation||Bladeless optical obturator|
|US8636759||Mar 30, 2010||Jan 28, 2014||Applied Medical Resources Corporation||Bladeless obturator|
|US8888692||Aug 17, 2012||Nov 18, 2014||Applied Medical Resources Corporation||Trocar cannula assembly and method of manufacture|
|US8939946||Apr 3, 2012||Jan 27, 2015||Applied Medical Resources Corporation||Balloon trocar|
|US8940009||Nov 15, 2013||Jan 27, 2015||Applied Medical Resources Corporation||Bladeless optical obturator|
|US8956351||Apr 9, 2008||Feb 17, 2015||Teleflex Medical Incorporated||Minimally invasive surgical needle and cauterizing assembly and methods|
|US8979747 *||Jul 23, 2012||Mar 17, 2015||Cooper Surgicalk, Inc.||Endoscopic ports and related kits and methods|
|US9066717||Mar 1, 2013||Jun 30, 2015||Coopersurgical, Inc.||Suture passer guides and related kits and methods|
|US9149272||Dec 21, 2012||Oct 6, 2015||Coopersurgical, Inc.||Suture passer guides and related kits and methods|
|US9155550 *||Mar 3, 2014||Oct 13, 2015||Apollo Camera, L.L.C.||Trocar cannula anchor and seal|
|US9155558||Jan 23, 2012||Oct 13, 2015||Applied Medical Resources Corporation||Insufflating optical surgical instrument|
|US9254125||Dec 23, 2013||Feb 9, 2016||Applied Medical Resources Corporation||Bladeless obturator|
|US9254148||May 2, 2012||Feb 9, 2016||Applied Medical Resources Corporation||Low-profile surgical universal access port|
|US9259238||Jan 26, 2015||Feb 16, 2016||Applied Medical Resources Corporation||Balloon trocar|
|US9265899||Jan 26, 2009||Feb 23, 2016||Applied Medical Resources Corporation||Insufflating access system|
|US9314266||Aug 8, 2013||Apr 19, 2016||Applied Medical Resources Corporation||First-entry trocar system|
|US9326757||Aug 25, 2010||May 3, 2016||Teleflex Medical Incorporated||Surgical instruments for laparoscopic aspiration and retraction|
|US9326784||Jul 14, 2009||May 3, 2016||Teleflex Medical Incorporated||Minimally invasive surgical assembly and methods|
|US9358040||Jul 12, 2013||Jun 7, 2016||Applied Medical Resources Corporation||First-entry trocar system|
|US20030135229 *||Dec 23, 2002||Jul 17, 2003||Green David T.||Safety trocar|
|US20040097792 *||Aug 11, 2003||May 20, 2004||Moll Frederic H.||Endoscopic inflatable retraction device, method of using, and method of making|
|US20050251191 *||May 13, 2003||Nov 10, 2005||Scott Taylor||Blunt tip obturator|
|US20050251196 *||May 6, 2004||Nov 10, 2005||Endius Incorporated||Surgical tool for use in expanding a tubular structure|
|US20070106522 *||Nov 8, 2005||May 10, 2007||Bruce Collins||System for distributing packages and channels to a device|
|US20070213675 *||Mar 8, 2007||Sep 13, 2007||Applied Medical Resources Corporation||Balloon trocar|
|US20070213766 *||May 30, 2006||Sep 13, 2007||Sundaram Ravikumar||Minimally Invasive Surgical Assembly and Methods|
|US20070213767 *||Jan 19, 2007||Sep 13, 2007||Sundaram Ravikumar||Minimally invasive surgical assembly and methods|
|US20070250112 *||Mar 13, 2007||Oct 25, 2007||Sundaram Ravikumar||Minimally Invasive Surgical Assembly and Methods|
|US20070282170 *||Dec 14, 2006||Dec 6, 2007||Sundaram Ravikumar||Rake Retractor and Needle Assembly for Minimally Invasive Surgical Applications|
|US20080086166 *||Mar 13, 2007||Apr 10, 2008||Sundaram Ravikumar||Minimally Invasive Surgical Assembly with Balloon Instrument|
|US20080097463 *||Jul 17, 2006||Apr 24, 2008||Jamie Glen House||Devices for handling catheter assembly|
|US20090182282 *||Jan 15, 2009||Jul 16, 2009||Applied Medical Resources Corporation||Trocar stability assembly|
|US20090259225 *||Apr 9, 2008||Oct 15, 2009||Sundaram Ravikumar||Minimally Invasive Surgical Needle and Cauterizing Assembly and Methods|
|US20100174149 *||Jul 8, 2010||Covidien Ag||Endoscopic inflatable retraction device, method of using, and method of making|
|US20100292724 *||Nov 18, 2010||Sundaram Ravikumar||Minimally Invasive Surgical Clamps, Assemblies and Methods|
|US20110082340 *||Apr 7, 2011||Tyco Healthercare Group LP||Foam collar for surgical access devices|
|US20110160538 *||Aug 25, 2010||Jun 30, 2011||Sundaram Ravikumar||Surgical instruments for laparoscopic aspiration and retraction|
|US20130079597 *||Mar 28, 2013||Coopersurgical, Inc.||Endoscopic Ports and Related Kits and Methods|
|US20140180015 *||Mar 3, 2014||Jun 26, 2014||Apollo Camera, L.L.C.||Trocar cannula anchor and seal|
|DE3011069A1 *||Mar 21, 1980||Aug 20, 1981||Harrith M Hasson||Laparoskoproehre|
|DE4408475A1 *||Mar 14, 1994||Sep 21, 1995||Wolf Gmbh Richard||Surgical forceps with hand operated bit|
|DE19539775A1 *||Oct 26, 1995||Apr 30, 1997||Aesculap Ag||Endoscopic instrument with protective cover|
|DE19539775C2 *||Oct 26, 1995||Mar 18, 1999||Aesculap Ag & Co Kg||Endoskopisches Instrument|
|EP0396882A1 *||Mar 20, 1990||Nov 14, 1990||Richard Wolf GmbH||Fixing device for holding fascia-holding-threads, with a conical seal for laparoscopy|
|EP0589426A1 *||Sep 22, 1993||Mar 30, 1994||LaserSurge, Inc.||Apparatus and method for anchoring surgical instrumentation|
|EP0723416A1 *||Sep 29, 1994||Jul 31, 1996||Heartport, Inc.||Stereoscopic percutaneous visualization system|
|EP0823241A1||Aug 8, 1997||Feb 11, 1998||Ethicon Endo-Surgery, Inc.||Trocar including cannula with stepped region|
|EP1503677A2 *||May 13, 2003||Feb 9, 2005||Applied Medical Resources Corporation||Cone tip obturator|
|EP2316361A1 *||May 13, 2003||May 4, 2011||Applied Medical Resources Corporation||Cone tip obturator|
|WO1993015789A1 *||Feb 17, 1993||Aug 19, 1993||Wilson-Cook Medical, Inc.||Operating channel/insufflation port assemblies|
|WO2000022974A1||Oct 20, 1999||Apr 27, 2000||S.S.H. Medical Limited||Examination device|
|U.S. Classification||604/26, 604/42, 604/174|
|International Classification||A61B1/12, A61B17/32, A61B17/34|
|Cooperative Classification||A61B1/12, A61B2017/320044, A61B2017/3492, A61B17/3421|
|European Classification||A61B17/34G4, A61B1/12|