US20010029387A1 - Safety shielded, reusable trocar - Google Patents

Safety shielded, reusable trocar Download PDF

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Publication number
US20010029387A1
US20010029387A1 US09/825,804 US82580401A US2001029387A1 US 20010029387 A1 US20010029387 A1 US 20010029387A1 US 82580401 A US82580401 A US 82580401A US 2001029387 A1 US2001029387 A1 US 2001029387A1
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cannula
obturator
trocar
inner cannula
main housing
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US09/825,804
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Philip Wolf
William Cox
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34Trocars; Puncturing needles
    • A61B17/3494Trocars; Puncturing needles with safety means for protection against accidental cutting or pricking, e.g. limiting insertion depth, pressure sensors
    • A61B17/3496Protecting sleeves or inner probes; Retractable tips
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/0046Surgical instruments, devices or methods, e.g. tourniquets with a releasable handle; with handle and operating part separable
    • A61B2017/00473Distal part, e.g. tip or head
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/08Accessories or related features not otherwise provided for
    • A61B2090/0813Accessories designed for easy sterilising, i.e. re-usable

Definitions

  • Applicant's invention relates to surgical instruments and, more particularly, to trocars.
  • Trocars are used to pierce or puncture an anatomical cavity to provide communication with the inside of the cavity during a surgical procedure.
  • Endoscopic surgery is currently becoming a significant method for performing surgeries. It is projected that by the year, 2000 half of all surgical procedures will be performed endoscopically. Laparoscopic surgery has become the surgical procedure of choice because of its patient care advantages over “open surgery.”
  • endoscopic surgery has been available as a method of diagnosis and, for a very limited number of disorders, a treatment.
  • a factor limiting the types of surgeries that could be performed laparoscopically was the ability to employ intraoperative assistance.
  • endoscopes allowed only direct visualization by the surgeon, such as the endoscope disclosed in U.S. Pat. No. 4,254,762 issued to Yoon. This led to the situation where the surgeon had one hand holding the laparoscope to his eye and then had only one hand available to operate.
  • the pivotal advantage of laparoscopic surgery over open surgery is the decreased post-operative recovery time. In many instances, a patient is able to leave the hospital within twenty four hours after laparoscopic surgery has been performed. This is compared to a five day to ten day hospitalization necessary to recover from an open surgical procedure. Additionally, laparoscopic surgery provides a decreased incidence of post-operative abdominal adhesions and decreased post-operative pain with enhanced cosmetic results.
  • Trocars are sharp, pointed surgical instruments used to puncture the wall of an anatomical cavity.
  • the trocar consists of a tube or cannula and a cutting element called an obturator or stylet.
  • the obturator fits within the cannula and has a sharp piercing tip at its end.
  • a conventional laparoscopic trocar insertion procedure usually follows insufflation of the abdominal cavity with CO 2 gas.
  • the introduction of CO 2 gas into the abdominal cavity lifts the abdominal wall away from the internal viscera. Once this is done, the abdominal wall is penetrated with the trocar.
  • the surgeon removes the obturator leaving the cannula or tube protruding through the body wall.
  • a laparoscope or laparoscopic instruments can then be inserted through the cannula to view internal organs or perform surgical procedures.
  • the obturator's sharp point could easily injure or cut an internal organ upon the slightest contact. If an internal organ is inadvertently injured or cut, unless immediate and massive hemorrhage occurs, the injury may not become apparent until long after completion of the surgery. At a minimum, such an injury will delay a patient's recovery and, more likely, could seriously endanger the patient's health. Additional corrective surgery on an open basis may be required, subjecting the patient to additional risks and costs.
  • laparoscopic trocars with the spring loaded safety shields are manufactured only as a thin wall plastic disposable instruments. These light weight plastic instruments are used once and then discarded as medical waste, adding significantly to the already escalating health care costs.
  • the single use disposable plastic trocars cost approximately sixty five dollars to ninety dollars each.
  • two to four trocars are used for each laparoscopic procedure.
  • surgical costs are unnecessarily increased about two hundred dollars to three hundred and fifty dollars per laparoscopic procedure, as well as adding to the overbearing problem of medical waste by the use of these disposable trocars.
  • the increased health care cost has been unavoidable because the only safety shielded trocar available was a disposable item. No one had invented a easily disassembled, easily cleaned, sterilized, and easily reassembled for reuse, safety shielded trocar.
  • An additional object of the present invention is to provide a means by which the trocar blade or cutting tip can be easily replaced after each surgical procedure thus providing a sharp cutting edge for each surgical use and also minimizing medical waste.
  • the trocar cannula subassembly includes an outer cannula attached to a main housing having a central bore in which a spring biased, inner cannula is slidably and removably inserted, and an upper housing, removably secured to the main housing, having a central bore which is aligned longitudinally with the bore of the main housing and in which sealing means is removably secured.
  • the obturator subassembly includes an elongated obturator having a replaceable and rotatable knife, an elongated shaft, an arcuate shaped cap, and which extends through the upper housing, sealing means, main housing, inner cannula, and outer cannula.
  • the safety shield control mechanism located in the main housing and removably engaged with the inner cannula, allows for positive and easily verifiable engagement and disengagement of the inner cannula as a safety shield for the obturator knife.
  • the trocar cannula subassembly and safety control mechanism are coupled proper operation of the safety shield can be verified without the obturator subassembly being inserted in the inner cannula.
  • the obturator subassembly, upper housing, and sealing means can be completely removed from the trocar assembly to allow unobstructed access through the inner cannula to the patient's internal cavity for removal of specimens or insertion of equipment. After use, the entire trocar assembly can be easily disassembled for cleaning, sterilization, and reuse.
  • FIG. 1 is a perspective view of the present invention.
  • FIG. 2 is a cross sectional view of the present invention with the safety shield extended.
  • FIG. 3 is a cross sectional view of the present invention with the safety shield partially retracted.
  • FIG. 4 is a cut-away sectional view of the present invention showing the trigger in the safe position.
  • FIG. 5 is a cut-away sectional view of the present invention showing the trigger in the armed position.
  • FIG. 6 is a cross sectional view of the present invention taken along line 6 — 6 of FIG. 4.
  • FIG. 7 is a cross sectional view of the present invention taken along line 7 — 7 of FIG.
  • FIG. 8 is an exploded view of the present invention.
  • FIG. 9 is a cross sectional view of the alternative embodiment shown in FIG. 11 with the safety shield extended.
  • FIG. 10 is a cross sectional view of the alternative embodiment shown in FIG. 11 with the safety shield partially retracted.
  • FIG. 11 is an exploded view of an alternative embodiment of the present invention.
  • FIG. 12 is an exploded view of the trigger mechanism of the alternative embodiment shown in FIG. 11.
  • FIGS. 1 - 8 illustrate a first embodiment of a safety shielded, reusable trocar generally designated ( 10 ) consisting of a trocar cannula subassembly ( 20 ), a safety shield control mechanism ( 80 ), and a separate obturator subassembly ( 60 ).
  • the three subassemblies are interfitting, but are designed to be easily disassembled for easy cleaning and sterilizing.
  • it is preferably made from a durable and strong material which can be cleaned and sterilized, such as surgical stainless steel, acetal, polysulfone, or any high temperature thermoplastic.
  • any material is acceptable as long as it may be sterilized by gas, autoclave, cold sterilization, and the like.
  • the trocar cannula subassembly ( 20 ) includes an outer cannula ( 22 ) attached to a main housing ( 24 ).
  • the outer cannula ( 22 ) may be attached to the main housing ( 24 ) in a variety of different methods including the outer cannula ( 22 ) being pressed on to the main housing ( 24 ) or it may be machined out of the same piece of metal as the main housing ( 24 ).
  • the outer cannula ( 22 ) and main housing ( 24 ) align to have a central axial bore ( 26 ) for receiving the inner cannula ( 30 ) and the obturator subassembly ( 60 ).
  • the central axial bore ( 26 ) is larger in the main housing ( 24 ) than in the outer cannula ( 22 ).
  • Main housing ( 24 ) has rectangular recesses ( 28 ) to facilitate gripping the trocar with the fingers and for quickly locating the safety shield control mechanism ( 80 ).
  • the inner cannula ( 30 ) is a tube adapted to be slidably inserted into outer cannula ( 22 ) and main housing ( 24 ) and serves as a safety shield for the obturator subassembly ( 60 ).
  • the aft end of the inner cannula ( 30 ) has a slider ( 32 ) attached which is adapted to allow smooth sliding of the inner cannula ( 30 ) in the larger central axial bore of the main housing ( 24 ).
  • the slider ( 32 ) also serves as a stop to prevent inner cannula ( 30 ) from sliding completely through main housing ( 24 ).
  • the rear end of slider ( 32 ) has an elongated key ( 34 ).
  • main housing ( 24 ) has a keyway (not shown) in which key ( 34 ) rides to permit axial movement without rotation of the inner cannula ( 30 ) relative to the outer cannula ( 22 ) and main housing ( 24 ).
  • upper housing ( 38 ) is removably secured to main housing ( 24 ).
  • Upper housing ( 38 ) has a lower tube ( 42 ) with a central axial bore ( 40 ) adapted to receive the rear end of inner cannula ( 30 ).
  • a spring ( 44 ) sits around the rear end of the inner cannula ( 30 ) and lower tube ( 42 ) with its ends seated against the bottom of upper housing ( 38 ) and the top of slider ( 32 ).
  • Spring ( 42 ) biases inner cannula ( 30 ) in the extended position.
  • the bottom of lower tube ( 42 ) serves as a stop to limit the rearward axial movement of inner cannula ( 30 ) relative to main housing ( 24 ).
  • Upper housing ( 38 ) houses removable sealing means including a removable, upper wiper seal ( 46 ) and a removable flapper valve seal ( 48 ).
  • the seals are preferably made of durable silicon rubber and plastic which can be sterilized.
  • Wiper seal ( 46 ) has a central opening which is approximately equal to the outside diameter of obturator. The primary function of wiper seal ( 46 ) is to insure a tight seal when the stem or shaft of obturator or other instrument shafts are inserted through upper housing ( 38 ).
  • Flapper valve ( 48 ) acts as a closure means when obturator or other instrument is withdrawn and separated from the trocar cannula subassembly ( 20 ).
  • Sealing means retainer ( 50 ) is removably attached to upper housing ( 38 ) and serves as a keeper of the seals to prevent them from falling out of upper housing ( 38 ).
  • Sealing means retainer ( 50 ) has a central bore longitudinally aligned with the central bore of inner cannula ( 30 ) for receiving the shaft of obturator or other instrument.
  • the obturator subassembly ( 60 ) includes a pyramidal-shaped knife ( 62 ), an elongated stem or shaft ( 64 ), an arcuate shaped cap ( 66 ).
  • Obturator ( 60 ) is adapted to extend and move longitudinally through upper housing ( 38 ), main housing ( 24 ), outer cannula ( 22 ), and inner cannula ( 30 ).
  • Inner cannula ( 30 ) serves as a safety shield for the knife ( 62 ) portion of obturator ( 60 ).
  • Obturator ( 60 ) may be easily removed from the trocar cannula subassembly ( 20 ).
  • Safety shield control mechanism ( 80 ) which is removably located in the main housing ( 24 ) and is removably engaged with the inner cannula ( 30 ).
  • Safety shield control mechanism ( 80 ) provides visual, tactile, and aural signals to the operator allowing for positive and easily verifiable engagement and disengagement of the inner cannula ( 30 ) as a safety shield for the obturator knife ( 62 ).
  • the safety shield control mechanism ( 80 ) includes a trigger pin ( 82 ), trigger spring ( 84 ), and red pin ( 86 ) which extend perpendicularly through a chamber in the main housing ( 24 ). Red pin ( 86 ) is removably secured to main housing ( 24 ). The ends of trigger spring ( 84 ) are seated against the inner face of red pin ( 86 ) and the inner face of trigger pin ( 82 ) biasing trigger pin ( 82 ) in an extended position.
  • Trigger pin ( 82 ) has a finger ( 88 ) which extends perpendicularly from main housing ( 24 ).
  • finger ( 88 ) Secured to finger ( 88 ) is an offset rectangular member ( 90 ) having a keyway ( 92 ) and an upper face ( 94 ) and a lower face ( 96 ).
  • Upper face ( 94 ) has two steps ( 98 and 100 ).
  • Secured to offset rectangular member ( 90 ) is a circular housing ( 102 ) for receiving trigger spring ( 84 ).
  • latch pin ( 104 ) Also part of the safety shield control mechanism ( 80 ) are a latch pin ( 104 ), a latch spring ( 106 ), and a latch spring retainer ( 108 ) located in the same keyway in main housing ( 24 ) as key ( 34 ).
  • Latch pin ( 104 ) is adapted to abut key ( 34 ) to assist in spring biasing inner cannula ( 30 ) to the extended position.
  • trigger pin ( 82 ) is trigger spring ( 84 ) biased in the extended position so that latch pin ( 104 ) is demountably located on the first step ( 98 ) of upper face ( 94 ) of offset rectangular member ( 90 ) and lower face ( 96 ) of offset rectangular member ( 90 ) prevents key ( 34 ) from moving axially rearward, thereby keeping the safety shield extended and locked over obturator knife ( 62 ).
  • trigger pin ( 82 ) is pushed in perpendicularly to main housing ( 24 ) a sufficient distance to allow latch spring ( 106 ) biased latch pin ( 104 ) to drop to the second step ( 100 ) of upper face ( 94 ).
  • Latch pin ( 104 ) while on the second step ( 100 ) abuts the side of the first step ( 98 ) and serves as a latch to prevent perpendicular movement by trigger spring ( 84 ) biased trigger pin ( 82 ) and keeps trigger pin ( 82 ) in the armed position.
  • trigger pin ( 82 ) With trigger pin ( 82 ) in the armed position, keyway ( 92 ) of offset rectangular member ( 90 ) is aligned with key ( 34 ) of inner cannula ( 30 ) thereby allowing inner cannula ( 30 ) to move longitudinally inside outer cannula ( 22 ).
  • key ( 34 ) lifts latch pin ( 104 ) and trigger pin ( 82 ) is trigger spring ( 84 ) biased outward towards the safe position.
  • the safety shielded, reusable trocar ( 10 ) operates and is used as follows. Before use the trocar ( 10 ) will typically be in the assembled form as shown in FIGS. 1 and 2 with the inner cannula ( 30 ) locked in position as a safety shield for the obturator for safety purposes and for storage. In this position the knife ( 62 ) or piercing tip is shielded and cannot be damaged by inadvertent contact with other surfaces. In this locked position, spring ( 44 ) biases inner cannula ( 30 ) forward with the forward edges of slider ( 32 ) acting as stops against the lower, inner portion of main housing ( 24 ) to define the forwardmost position of inner cannula ( 30 ).
  • lower face ( 96 ) of trigger pin ( 82 ) acts as stops against the rearward edges of slider ( 32 ) to define the rearmost position of inner cannula ( 30 ) and trigger pin ( 82 ) is in its extended position as shown in FIGS. 4 and 6.
  • Flapper valve ( 48 ) is biased against the shaft ( 64 ) of obturator ( 60 ) to frictionally minimize longitudinal movement of obturator ( 60 ) relative to main housing ( 24 ).
  • the inner lip of wiper seal ( 46 ) rests snugly against the shaft ( 64 ) of obturator ( 60 ) and forms a seal therewith.
  • trigger pin ( 82 ) is pushed in perpendicularly to main housing ( 24 ), as shown in FIGS. 5 and 7.
  • Latch pin ( 104 ) moves to the second step ( 100 ) of trigger pin ( 82 ) and keyway ( 92 ) of trigger pin ( 82 ) is aligned with key ( 34 ) of inner cannula ( 30 ).
  • latch pin ( 104 ) moves to the second step ( 100 ) of trigger pin ( 82 ) an audible click is heard by the operator.
  • inner cannula ( 30 ) is free to move longitudinally rearward until stopped by slider ( 32 ) abutting the lower tube ( 42 ) of upper housing ( 38 ).
  • the trocar ( 10 ) is used in conjunction with insufflatory techniques wherein a needle type instrument first punctures the skin in a desired body cavity region.
  • the needle house a stylet or the like that introduces a gas like carbon dioxide from a pressurized container into the body cavity. After the cavity has been inflated, a small incision may be made in the skin at the desired body cavity location.
  • the trocar ( 10 ) is put in its armed position.
  • the trocar ( 10 ) is gripped firmly with the cap ( 66 ) of the obturator ( 60 ) against the palm of the surgeon's hand.
  • the safety shield portion of the inner cannula ( 30 ) is placed against the incision in the skin and firm pressure is exerted against the skin.
  • the pressure causes the inner cannula ( 30 ) to be pushed rearwardly against spring ( 44 ) to its retracted position as shown in FIG. 3, thereby exposing the knife ( 62 ) of the obturator, and key ( 34 ) lifts latch pin ( 104 ) from the second step ( 100 ) of trigger pin ( 82 ).
  • the tip of the knife ( 62 ) enters the incision and underlying tissue with continued pressure.
  • the obturator subassembly ( 60 ) may be withdrawn from the trocar cannula subassembly ( 20 ) once the cavity has been penetrated. During withdrawal, once the tip of the obturator ( 60 ) clears the opening in wiper seal ( 46 ), flapper valve ( 48 ) will bias the flapper to a sealed position. Air pressure within the body cavity is thus maintained.
  • main housing ( 24 ) may include a stopcock port into which the nozzle of a stopcock could be inserted to pass additional insufflating gas into the cavity.
  • the trocar will normally be inserted into the body cavity until main housing ( 24 ) abuts the skin. After the obturator subassembly ( 60 ) has been separated from the trocar cannula subassembly ( 20 ), surgical instruments may be inserted into the body cavity via the central bore ( 26 ) of trocar cannula subassembly ( 20 ) to view internal tissues, perform operations thereon, or drain bodily fluids.
  • upper housing ( 38 ) may be removed from main housing ( 24 ). By removing upper housing ( 38 ), the wiper seal ( 46 ), flapper seal, and seal retainer ( 50 ) are all removed as a single unit.
  • the trocar cannula subassembly ( 20 ) then provides unobstructed access to the body cavity to permit removal of specimens and to deflate the cavity.
  • the entire trocar ( 10 ) can be easily disassembled for cleaning, sterilization, and ready for reuse. Sterilization can be by any standard sterilization technique.
  • FIGS. 9 - 12 An alternative embodiment of the present invention is illustrated in FIGS. 9 - 12 . Although the function and operation of the safety'shielded, reusable trocar are the same, there are slight changes to each subassembly unit.
  • the trocar cannula subassembly ( 220 ) includes an inner cannula ( 230 ) having a slider ( 232 ) located flush with the rearmost end of the inner cannula ( 230 ).
  • a pair of diametrically opposed axially elongated keys ( 234 ) are attached to slider ( 232 ).
  • the interior of main housing ( 224 ) has complementary keyways (not shown) for receiving keys ( 234 ) and allowing longitudinal movement of inner cannula ( 230 ) without any rotational movement of inner cannula ( 230 ) relative to main housing ( 224 ) and outer cannula ( 222 ).
  • a pair of diametrically opposed latch spring mechanisms are removably located in keyways.
  • Latch spring mechanisms include a latch pin ( 304 ), latch spring ( 306 ), and a latch spring retainer ( 308 ). Latch spring mechanisms are adapted to abut keys ( 234 ) to spring bias inner cannula ( 230 ) to the extended position. The interaction between the latch spring mechanism, trigger pin ( 282 ), and keys ( 234 ) is as described above for the first embodiment of the present invention.
  • Upper housing ( 238 ) has a bevelled interior surface ( 239 ) to house sealing means such as a flapper valve ( 248 ) and wiper valve ( 246 ).
  • the edges of flapper valve ( 248 ) are complementarily bevelled so that the sealing means can only be inserted with flapper valve ( 248 ) closest to inner cannula ( 230 ). If the sealing means would be reversed, the sealing means would not fit into upper housing ( 238 ).
  • Sealing means are kept in place by a sealing means retainer ( 250 ) having a handle ( 252 ) to provide easy removable securing to upper housing ( 238 ).
  • Upper housing ( 238 ) is removably engaged between a lock ring ( 254 ) which couples to main housing ( 224 ), as shown in FIGS. 9 and 10.
  • the obturator subassembly ( 260 ) in this embodiment has a cap ( 266 ) secured to a shaft ( 264 ).
  • the shaft ( 264 ) may be made of a lightweight and durable material such as aluminum.
  • a capture fitting ( 268 ) Secured to the opposite end of shaft ( 264 ) is a capture fitting ( 268 ) for receiving the rounded end ( 272 ) of the knife ( 262 ).
  • the knife ( 262 ) made be made of stainless steel or alternatively, to further reduce the overall weight, the knife ( 262 ) made be made of high temperature thermoplastic. This also gives the additional advantage of making the knife ( 262 ) easily replaceable and interchangeable to ensure that the knife is always sharp.
  • the knife ( 262 ) is rotatably and removably secured to the shaft ( 264 ) by means of a capture fitting ( 268 ) and capture nut ( 270 ) arrangement. As best seen in FIG. 11, capture fitting ( 268 ) and capture nut ( 270 ) are aligned to form a opening ( 271 ) for receiving the rounded end of the knife ( 262 ). The knife ( 262 ) is inserted sideways through opening ( 271 ). The capture nut ( 270 ) is then rotated at least thirty degrees to rotatably lock knife ( 262 ) to the shaft ( 264 ), as shown in FIG. 9.
  • the safety shield control mechanism ( 280 ) operates in the same manner as described above. However, the trigger pin has been modified as shown in FIGS. 11 and 12.
  • the trigger pin ( 282 ) is now designed to move in and out of both sides of the main housing ( 224 ), much like a safety on a rifle. In the armed position, the red pin ( 286 ) protrudes from the main housing ( 224 ) and may be painted the color red. In the safe position, the trigger pin ( 282 ) protrudes from the main housing ( 224 ) and may be colored green or black.
  • the offset rectangular member ( 290 ) has been modified for the upper face ( 294 ) to have an arcuate shaped second step ( 300 ) and the lower face has an angled keyway ( 292 ) with a bevelled side surface ( 293 ).
  • the bevelled side surface ( 293 ) allows for smoother pickup and dropping of the latch pin ( 304 ).
  • the steps are the same as previously described.
  • the knife ( 262 ) is rotatable. This facilitates a smooth incision through the skin as the rotatable knife ( 262 ) rotates to counter any rotation of the trocar by the surgeon while applying pressure to the skin.

Abstract

A safety shielded, reusable trocar consisting of a trocar cannula subassembly, a safety shield control mechanism, and a separate obturator subassembly. The trocar cannula subassembly includes an outer cannula attached to a main housing having a central bore in which a spring biased, inner cannula is slidably and removably inserted, and an upper housing, removably secured to the main housing, having a central bore which is aligned longitudinally with the bore of the main housing and in which sealing means is removably secured. The obturator subassembly includes an elongated obturator having a replaceable and rotatable knife, an elongated shaft, an arcuate shaped cap, and which extends through the upper housing, sealing means, main housing, inner cannula, and outer cannula. The safety shield control mechanism, located in the main housing and removably engaged with the inner cannula, allows for positive and easily verifiable engagement and disengagement of the inner cannula as a safety shield for the obturator knife. When the trocar cannula subassembly and safety shield control mechanism are coupled proper operation of the safety shield can be verified without the obturator subassembly being inserted in the inner cannula. In operation, the obturator subassembly, upper housing, and sealing means can be completely removed from the trocar assembly to allow unobstructed access through the inner cannula to the patient's internal cavity for removal of specimens or insertion of equipment. After use, the entire trocar assembly can be easily disassembled for cleaning, sterilization, and reuse.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the Invention [0001]
  • Applicant's invention relates to surgical instruments and, more particularly, to trocars. Trocars are used to pierce or puncture an anatomical cavity to provide communication with the inside of the cavity during a surgical procedure. [0002]
  • 2. Background Information [0003]
  • Endoscopic surgery, particularly laparoscopic surgery, is currently becoming a significant method for performing surgeries. It is projected that by the year, 2000 half of all surgical procedures will be performed endoscopically. Laparoscopic surgery has become the surgical procedure of choice because of its patient care advantages over “open surgery.”[0004]
  • For the past several decades, endoscopic surgery has been available as a method of diagnosis and, for a very limited number of disorders, a treatment. Until recently, a factor limiting the types of surgeries that could be performed laparoscopically was the ability to employ intraoperative assistance. In the past, endoscopes allowed only direct visualization by the surgeon, such as the endoscope disclosed in U.S. Pat. No. 4,254,762 issued to Yoon. This led to the situation where the surgeon had one hand holding the laparoscope to his eye and then had only one hand available to operate. [0005]
  • Fortunately, miniaturization of video camera computer chips has led to the development of video cameras that can easily be attached to an endoscope or laparoscope. During surgery, connecting a video camera and monitor to the laparoscope enables all the operating room personnel to view the surgical procedure, rather than just the surgeon. Thus, the operating room personnel are able to provide operative assistance just as they do with open surgery. The type and number of surgical procedures amenable to laparoscopic surgery is presently one of the most rapidly developing areas of medicine. [0006]
  • The pivotal advantage of laparoscopic surgery over open surgery is the decreased post-operative recovery time. In many instances, a patient is able to leave the hospital within twenty four hours after laparoscopic surgery has been performed. This is compared to a five day to ten day hospitalization necessary to recover from an open surgical procedure. Additionally, laparoscopic surgery provides a decreased incidence of post-operative abdominal adhesions and decreased post-operative pain with enhanced cosmetic results. [0007]
  • An essential medical instrument for endoscopic procedures is the trocar. Trocars are sharp, pointed surgical instruments used to puncture the wall of an anatomical cavity. The trocar consists of a tube or cannula and a cutting element called an obturator or stylet. The obturator fits within the cannula and has a sharp piercing tip at its end. [0008]
  • A conventional laparoscopic trocar insertion procedure usually follows insufflation of the abdominal cavity with CO[0009] 2 gas. The introduction of CO2 gas into the abdominal cavity lifts the abdominal wall away from the internal viscera. Once this is done, the abdominal wall is penetrated with the trocar. After insertion of the trocar through the abdominal wall, the surgeon removes the obturator leaving the cannula or tube protruding through the body wall. A laparoscope or laparoscopic instruments can then be inserted through the cannula to view internal organs or perform surgical procedures.
  • Penetrating the wall of the abdominal cavity with the trocar is done quickly. The sharp point of the obturator encounters great resistance from the skin, muscle, and tissue membranes of the abdominal wall while it is being pushed through these structures. Once the trocar's sharp point and blade pass through the abdominal wall and into the cavity, the resistance to the trocar drops quickly. Unless the surgeon immediately stops pushing the trocar just as soon as penetration of the abdominal wall is complete, there is a chance that the trocar will penetrate further into the abdominal cavity and injure internal organs. [0010]
  • Within the abdominal cavity, the obturator's sharp point could easily injure or cut an internal organ upon the slightest contact. If an internal organ is inadvertently injured or cut, unless immediate and massive hemorrhage occurs, the injury may not become apparent until long after completion of the surgery. At a minimum, such an injury will delay a patient's recovery and, more likely, could seriously endanger the patient's health. Additional corrective surgery on an open basis may be required, subjecting the patient to additional risks and costs. [0011]
  • Prior to 1987, the only trocars available for laparoscopic use were instruments made from stainless steel, such as those disclosed in U.S. Pat. No. 3,994,287 issued to Turp et al., and U.S. Pat. No. 3,613,684 issued to Sheridan. A problem common to all of these “classic” trocars is that they do not have a safety shield which covers the sharp, cutting tip of the obturator once it pierces the cavity wall. [0012]
  • Several changes and additions have been made on the functional design of these classic trocars. The most significant improvement on the classic trocar is the addition of a spring-loaded safety shield that snaps forward to cover the sharp point and blade of the obturator once the trocar has penetrated the abdominal wall, such as those disclosed in U.S. Pat. No. 4,601,710 issued to Moll, U.S. Pat. No. 4,654,030 issued to Moll et al. and U.S. Pat. No. 4,535,773 issued to Yoon. In these devices, the safety shield is a plastic sleeve which is concentrically mounted to the obturator. Because of this safety feature, trocars with a spring loaded safety shield have become the most used trocars in laparoscopic surgery. [0013]
  • However, these spring loaded safety shields have cumbersome safety shield control mechanisms which are difficult to tell if the safety shield is armed or engaged. To be sure of the safety shield's operation, a surgeon will need to verify the proper operation of the safety shield prior to use. Since the safety shields are mounted to the obturator, surgeons are required to test the safety shield's operation with the obturator in place by manually pressing the safety shield of the trocar. Unfortunately, this results in many slight puncture wounds being experienced by the surgeons as they are attempting to vefify the safety shield's operation. [0014]
  • Currently, laparoscopic trocars with the spring loaded safety shields are manufactured only as a thin wall plastic disposable instruments. These light weight plastic instruments are used once and then discarded as medical waste, adding significantly to the already escalating health care costs. For example, the single use disposable plastic trocars cost approximately sixty five dollars to ninety dollars each. Usually two to four trocars are used for each laparoscopic procedure. Thus, surgical costs are unnecessarily increased about two hundred dollars to three hundred and fifty dollars per laparoscopic procedure, as well as adding to the overbearing problem of medical waste by the use of these disposable trocars. Presently, however, the increased health care cost has been unavoidable because the only safety shielded trocar available was a disposable item. No one had invented a easily disassembled, easily cleaned, sterilized, and easily reassembled for reuse, safety shielded trocar. [0015]
  • SUMMARY OF THE INVENTION
  • Accordingly, it is an object of the present invention to provide a safety shield which can be tested for proper operation without the obturator being located in the cannula. [0016]
  • It is another object of the present invention to provide a safety shield control mechanism which is easy to verify if the safety shield is armed or safe. [0017]
  • It is further object of the present invention to provide a safety shield which is removable and separate from the obturator. [0018]
  • It is still another object of the present invention to provide a reusable trocar with a safety shield which is easily disassembled, easily cleaned, sterilized, and easily reassembled for reuse. [0019]
  • It is yet another object of the present invention to provide a trocar in which the upper housing can be quickly disassembled from the main housing while in use to allow for unobstructed access through the trocar to the body cavity. [0020]
  • An additional object of the present invention is to provide a means by which the trocar blade or cutting tip can be easily replaced after each surgical procedure thus providing a sharp cutting edge for each surgical use and also minimizing medical waste. [0021]
  • These and other objects are met by Applicants' invention of a safety shielded, reusable trocar consisting of a trocar cannula subassembly, a safety shield control mechanism, and a separate obturator subassembly. The trocar cannula subassembly includes an outer cannula attached to a main housing having a central bore in which a spring biased, inner cannula is slidably and removably inserted, and an upper housing, removably secured to the main housing, having a central bore which is aligned longitudinally with the bore of the main housing and in which sealing means is removably secured. [0022]
  • The obturator subassembly includes an elongated obturator having a replaceable and rotatable knife, an elongated shaft, an arcuate shaped cap, and which extends through the upper housing, sealing means, main housing, inner cannula, and outer cannula. [0023]
  • The safety shield control mechanism, located in the main housing and removably engaged with the inner cannula, allows for positive and easily verifiable engagement and disengagement of the inner cannula as a safety shield for the obturator knife. When the trocar cannula subassembly and safety control mechanism are coupled proper operation of the safety shield can be verified without the obturator subassembly being inserted in the inner cannula. [0024]
  • In operation, the obturator subassembly, upper housing, and sealing means can be completely removed from the trocar assembly to allow unobstructed access through the inner cannula to the patient's internal cavity for removal of specimens or insertion of equipment. After use, the entire trocar assembly can be easily disassembled for cleaning, sterilization, and reuse. [0025]
  • The foregoing will become apparent from the following detailed description of a preferred embodiment with reference to the accompanying figures.[0026]
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a perspective view of the present invention. [0027]
  • FIG. 2 is a cross sectional view of the present invention with the safety shield extended. [0028]
  • FIG. 3 is a cross sectional view of the present invention with the safety shield partially retracted. [0029]
  • FIG. 4 is a cut-away sectional view of the present invention showing the trigger in the safe position. [0030]
  • FIG. 5 is a cut-away sectional view of the present invention showing the trigger in the armed position. [0031]
  • FIG. 6 is a cross sectional view of the present invention taken along [0032] line 66 of FIG. 4.
  • FIG. 7 is a cross sectional view of the present invention taken along [0033] line 77 of FIG.
  • FIG. 8 is an exploded view of the present invention. [0034]
  • FIG. 9 is a cross sectional view of the alternative embodiment shown in FIG. 11 with the safety shield extended. [0035]
  • FIG. 10 is a cross sectional view of the alternative embodiment shown in FIG. 11 with the safety shield partially retracted. [0036]
  • FIG. 11 is an exploded view of an alternative embodiment of the present invention. [0037]
  • FIG. 12 is an exploded view of the trigger mechanism of the alternative embodiment shown in FIG. 11.[0038]
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
  • Referring now to the drawings, FIGS. [0039] 1-8 illustrate a first embodiment of a safety shielded, reusable trocar generally designated (10) consisting of a trocar cannula subassembly (20), a safety shield control mechanism (80), and a separate obturator subassembly (60). The three subassemblies are interfitting, but are designed to be easily disassembled for easy cleaning and sterilizing. To facilitate the reusable features of the trocar (10), it is preferably made from a durable and strong material which can be cleaned and sterilized, such as surgical stainless steel, acetal, polysulfone, or any high temperature thermoplastic. However, any material is acceptable as long as it may be sterilized by gas, autoclave, cold sterilization, and the like.
  • Referring to FIG. 8, the trocar cannula subassembly ([0040] 20) includes an outer cannula (22) attached to a main housing (24). The outer cannula (22) may be attached to the main housing (24) in a variety of different methods including the outer cannula (22) being pressed on to the main housing (24) or it may be machined out of the same piece of metal as the main housing (24). The outer cannula (22) and main housing (24) align to have a central axial bore (26) for receiving the inner cannula (30) and the obturator subassembly (60). The central axial bore (26) is larger in the main housing (24) than in the outer cannula (22). Main housing (24) has rectangular recesses (28) to facilitate gripping the trocar with the fingers and for quickly locating the safety shield control mechanism (80).
  • The inner cannula ([0041] 30) is a tube adapted to be slidably inserted into outer cannula (22) and main housing (24) and serves as a safety shield for the obturator subassembly (60). The aft end of the inner cannula (30) has a slider (32) attached which is adapted to allow smooth sliding of the inner cannula (30) in the larger central axial bore of the main housing (24). The slider (32) also serves as a stop to prevent inner cannula (30) from sliding completely through main housing (24). The rear end of slider (32) has an elongated key (34). The inner side of main housing (24) has a keyway (not shown) in which key (34) rides to permit axial movement without rotation of the inner cannula (30) relative to the outer cannula (22) and main housing (24).
  • As shown in FIGS. 2 and 8, upper housing ([0042] 38) is removably secured to main housing (24). Upper housing (38) has a lower tube (42) with a central axial bore (40) adapted to receive the rear end of inner cannula (30). A spring (44) sits around the rear end of the inner cannula (30) and lower tube (42) with its ends seated against the bottom of upper housing (38) and the top of slider (32). Spring (42) biases inner cannula (30) in the extended position. The bottom of lower tube (42) serves as a stop to limit the rearward axial movement of inner cannula (30) relative to main housing (24).
  • Upper housing ([0043] 38) houses removable sealing means including a removable, upper wiper seal (46) and a removable flapper valve seal (48). The seals are preferably made of durable silicon rubber and plastic which can be sterilized. Wiper seal (46) has a central opening which is approximately equal to the outside diameter of obturator. The primary function of wiper seal (46) is to insure a tight seal when the stem or shaft of obturator or other instrument shafts are inserted through upper housing (38). Flapper valve (48) acts as a closure means when obturator or other instrument is withdrawn and separated from the trocar cannula subassembly (20). Sealing means retainer (50) is removably attached to upper housing (38) and serves as a keeper of the seals to prevent them from falling out of upper housing (38). Sealing means retainer (50) has a central bore longitudinally aligned with the central bore of inner cannula (30) for receiving the shaft of obturator or other instrument.
  • The obturator subassembly ([0044] 60) includes a pyramidal-shaped knife (62), an elongated stem or shaft (64), an arcuate shaped cap (66). Obturator (60) is adapted to extend and move longitudinally through upper housing (38), main housing (24), outer cannula (22), and inner cannula (30). Inner cannula (30) serves as a safety shield for the knife (62) portion of obturator (60). Obturator (60) may be easily removed from the trocar cannula subassembly (20).
  • The operation of the inner cannula ([0045] 30) is controlled by the safety shield control mechanism (80) which is removably located in the main housing (24) and is removably engaged with the inner cannula (30). Safety shield control mechanism (80) provides visual, tactile, and aural signals to the operator allowing for positive and easily verifiable engagement and disengagement of the inner cannula (30) as a safety shield for the obturator knife (62). When the trocar cannula subassembly (20) and safety shield control mechanism (80) are coupled, proper operation of the safety shield can be verified without the obturator subassembly (60) being inserted in the inner cannula (30).
  • As shown in FIGS. 2 through 7, the safety shield control mechanism ([0046] 80) includes a trigger pin (82), trigger spring (84), and red pin (86) which extend perpendicularly through a chamber in the main housing (24). Red pin (86) is removably secured to main housing (24). The ends of trigger spring (84) are seated against the inner face of red pin (86) and the inner face of trigger pin (82) biasing trigger pin (82) in an extended position.
  • Trigger pin ([0047] 82) has a finger (88) which extends perpendicularly from main housing (24). Secured to finger (88) is an offset rectangular member (90) having a keyway (92) and an upper face (94) and a lower face (96). Upper face (94) has two steps (98 and 100). Secured to offset rectangular member (90) is a circular housing (102) for receiving trigger spring (84).
  • Also part of the safety shield control mechanism ([0048] 80) are a latch pin (104), a latch spring (106), and a latch spring retainer (108) located in the same keyway in main housing (24) as key (34). Latch pin (104) is adapted to abut key (34) to assist in spring biasing inner cannula (30) to the extended position.
  • In the safe position as shown in FIGS. 2 and 6, trigger pin ([0049] 82) is trigger spring (84) biased in the extended position so that latch pin (104) is demountably located on the first step (98) of upper face (94) of offset rectangular member (90) and lower face (96) of offset rectangular member (90) prevents key (34) from moving axially rearward, thereby keeping the safety shield extended and locked over obturator knife (62).
  • To arm, as shown in FIG. 7, trigger pin ([0050] 82) is pushed in perpendicularly to main housing (24) a sufficient distance to allow latch spring (106) biased latch pin (104) to drop to the second step (100) of upper face (94). Latch pin (104) while on the second step (100) abuts the side of the first step (98) and serves as a latch to prevent perpendicular movement by trigger spring (84) biased trigger pin (82) and keeps trigger pin (82) in the armed position. With trigger pin (82) in the armed position, keyway (92) of offset rectangular member (90) is aligned with key (34) of inner cannula (30) thereby allowing inner cannula (30) to move longitudinally inside outer cannula (22). When inner cannula (30) moves rearward, as shown in FIG. 3, key (34) lifts latch pin (104) and trigger pin (82) is trigger spring (84) biased outward towards the safe position. As inner cannula (30) moves forward, key (34) moves past trigger pin (82) and first step (98) of offset rectangular member (90) engages latch pin (104), thereby putting safety shield control mechanism (80) in the safe position.
  • The safety shielded, reusable trocar ([0051] 10) operates and is used as follows. Before use the trocar (10) will typically be in the assembled form as shown in FIGS. 1 and 2 with the inner cannula (30) locked in position as a safety shield for the obturator for safety purposes and for storage. In this position the knife (62) or piercing tip is shielded and cannot be damaged by inadvertent contact with other surfaces. In this locked position, spring (44) biases inner cannula (30) forward with the forward edges of slider (32) acting as stops against the lower, inner portion of main housing (24) to define the forwardmost position of inner cannula (30). Also in this locked position, lower face (96) of trigger pin (82) acts as stops against the rearward edges of slider (32) to define the rearmost position of inner cannula (30) and trigger pin (82) is in its extended position as shown in FIGS. 4 and 6. Flapper valve (48) is biased against the shaft (64) of obturator (60) to frictionally minimize longitudinal movement of obturator (60) relative to main housing (24). The inner lip of wiper seal (46) rests snugly against the shaft (64) of obturator (60) and forms a seal therewith.
  • To unlock inner cannula ([0052] 30) from its safety shield position, trigger pin (82) is pushed in perpendicularly to main housing (24), as shown in FIGS. 5 and 7. Latch pin (104) moves to the second step (100) of trigger pin (82) and keyway (92) of trigger pin (82) is aligned with key (34) of inner cannula (30). When latch pin (104) moves to the second step (100) of trigger pin (82) an audible click is heard by the operator. In this armed position, inner cannula (30) is free to move longitudinally rearward until stopped by slider (32) abutting the lower tube (42) of upper housing (38).
  • In surgical use, the trocar ([0053] 10) is used in conjunction with insufflatory techniques wherein a needle type instrument first punctures the skin in a desired body cavity region. Usually, the needle house a stylet or the like that introduces a gas like carbon dioxide from a pressurized container into the body cavity. After the cavity has been inflated, a small incision may be made in the skin at the desired body cavity location. The trocar (10) is put in its armed position. The trocar (10) is gripped firmly with the cap (66) of the obturator (60) against the palm of the surgeon's hand. The safety shield portion of the inner cannula (30) is placed against the incision in the skin and firm pressure is exerted against the skin. The pressure causes the inner cannula (30) to be pushed rearwardly against spring (44) to its retracted position as shown in FIG. 3, thereby exposing the knife (62) of the obturator, and key (34) lifts latch pin (104) from the second step (100) of trigger pin (82). The tip of the knife (62) enters the incision and underlying tissue with continued pressure.
  • Once the knife ([0054] 62) has penetrated tissue and has entered the cavity, the force against the front end of the inner cannula (30) ceases and the inner cannula (30) is automatically moved longitudinally back to its extended position through the action of spring (44). As inner cannula (30) moves forward, key (34) moves past trigger pin (82) and first step (98) of offset rectangular member (90) engages latch pin (104), thereby putting safety shield control mechanism (80) in the safe and locked position.
  • The obturator subassembly ([0055] 60) may be withdrawn from the trocar cannula subassembly (20) once the cavity has been penetrated. During withdrawal, once the tip of the obturator (60) clears the opening in wiper seal (46), flapper valve (48) will bias the flapper to a sealed position. Air pressure within the body cavity is thus maintained. Although not shown, main housing (24) may include a stopcock port into which the nozzle of a stopcock could be inserted to pass additional insufflating gas into the cavity.
  • The trocar will normally be inserted into the body cavity until main housing ([0056] 24) abuts the skin. After the obturator subassembly (60) has been separated from the trocar cannula subassembly (20), surgical instruments may be inserted into the body cavity via the central bore (26) of trocar cannula subassembly (20) to view internal tissues, perform operations thereon, or drain bodily fluids.
  • If the surgeon desires obstructed access to the body cavity for better viewing or to take a tissue sample, upper housing ([0057] 38) may be removed from main housing (24). By removing upper housing (38), the wiper seal (46), flapper seal, and seal retainer (50) are all removed as a single unit. The trocar cannula subassembly (20) then provides unobstructed access to the body cavity to permit removal of specimens and to deflate the cavity.
  • After use, the entire trocar ([0058] 10) can be easily disassembled for cleaning, sterilization, and ready for reuse. Sterilization can be by any standard sterilization technique.
  • An alternative embodiment of the present invention is illustrated in FIGS. [0059] 9-12. Although the function and operation of the safety'shielded, reusable trocar are the same, there are slight changes to each subassembly unit.
  • The trocar cannula subassembly ([0060] 220) includes an inner cannula (230) having a slider (232) located flush with the rearmost end of the inner cannula (230). A pair of diametrically opposed axially elongated keys (234) are attached to slider (232). The interior of main housing (224) has complementary keyways (not shown) for receiving keys (234) and allowing longitudinal movement of inner cannula (230) without any rotational movement of inner cannula (230) relative to main housing (224) and outer cannula (222). A pair of diametrically opposed latch spring mechanisms are removably located in keyways. Latch spring mechanisms include a latch pin (304), latch spring (306), and a latch spring retainer (308). Latch spring mechanisms are adapted to abut keys (234) to spring bias inner cannula (230) to the extended position. The interaction between the latch spring mechanism, trigger pin (282), and keys (234) is as described above for the first embodiment of the present invention.
  • Upper housing ([0061] 238) has a bevelled interior surface (239) to house sealing means such as a flapper valve (248) and wiper valve (246). The edges of flapper valve (248) are complementarily bevelled so that the sealing means can only be inserted with flapper valve (248) closest to inner cannula (230). If the sealing means would be reversed, the sealing means would not fit into upper housing (238). Sealing means are kept in place by a sealing means retainer (250) having a handle (252) to provide easy removable securing to upper housing (238). Upper housing (238) is removably engaged between a lock ring (254) which couples to main housing (224), as shown in FIGS. 9 and 10.
  • The obturator subassembly ([0062] 260) in this embodiment has a cap (266) secured to a shaft (264). To reduce the overall weight of the trocar, the shaft (264) may be made of a lightweight and durable material such as aluminum. Secured to the opposite end of shaft (264) is a capture fitting (268) for receiving the rounded end (272) of the knife (262). The knife (262) made be made of stainless steel or alternatively, to further reduce the overall weight, the knife (262) made be made of high temperature thermoplastic. This also gives the additional advantage of making the knife (262) easily replaceable and interchangeable to ensure that the knife is always sharp.
  • The knife ([0063] 262) is rotatably and removably secured to the shaft (264) by means of a capture fitting (268) and capture nut (270) arrangement. As best seen in FIG. 11, capture fitting (268) and capture nut (270) are aligned to form a opening (271) for receiving the rounded end of the knife (262). The knife (262) is inserted sideways through opening (271). The capture nut (270) is then rotated at least thirty degrees to rotatably lock knife (262) to the shaft (264), as shown in FIG. 9.
  • The safety shield control mechanism ([0064] 280) operates in the same manner as described above. However, the trigger pin has been modified as shown in FIGS. 11 and 12. The trigger pin (282) is now designed to move in and out of both sides of the main housing (224), much like a safety on a rifle. In the armed position, the red pin (286) protrudes from the main housing (224) and may be painted the color red. In the safe position, the trigger pin (282) protrudes from the main housing (224) and may be colored green or black. Additionally, the offset rectangular member (290) has been modified for the upper face (294) to have an arcuate shaped second step (300) and the lower face has an angled keyway (292) with a bevelled side surface (293). The bevelled side surface (293) allows for smoother pickup and dropping of the latch pin (304).
  • In operation of the alternative embodiment, the steps are the same as previously described. During insertion of the trocar, the knife ([0065] 262) is rotatable. This facilitates a smooth incision through the skin as the rotatable knife (262) rotates to counter any rotation of the trocar by the surgeon while applying pressure to the skin.
  • Although the invention has been described with reference to specific embodiments, this description is not meant to be construed in a limited sense. Various modifications of the disclosed embodiments, as well as alternative embodiments of the inventions will become apparent to persons skilled in the art upon the reference to the description of the invention. It is, therefore, contemplated that the appended claims will cover such modifications that fall within the scope of the invention. [0066]

Claims (5)

We claim:
1. A safety shielded trocar assembly comprising:
a. a trocar cannula subassembly having an outer cannula attached to a main housing and an inner cannula removably interposed with said outer cannula and said main housing, said inner cannula being axially movable relative to said outer cannula between a normally extended position and a retracted position; and
b. biasing means acting on the rear end of said inner cannula, whereby said inner cannula is forced to said retracted position when said trocar assembly is being forced against a relatively immovable object and is biased by said biasing means to said extended position once the trocar assembly is removed from the relatively immovable object
whereby the proper operation of said inner cannula as a safety shield for an obturator can be verified without said obturator being interposed with said inner cannula.
2. A safety shielded trocar assembly comprising:
a. a trocar cannula subassembly having an outer cannula attached to a main housing and an inner cannula removably interposed with said outer cannula and said main housing, said inner cannula being axially movable relative to said outer cannula between a normally extended position and a retracted position;
b. biasing means acting on the rear end of said inner cannula to bias said inner cannula to said normally extended position; and
c. inner cannula control means located in said main housing, said inner cannula control means acting on said inner cannula, whereby said inner cannula is forced to said retracted position when said trocar assembly is being forced against a relatively immovable object and is biased by said biasing means to said extended position once the trocar assembly is removed from the relatively immovable object
whereby the proper operation of said inner cannula as a safety shield for an obturator can be verified without said obturator being interposed with said inner cannula.
3. A safety shielded trocar assembly for providing communication through an anatomical organ structure comprising:
a. an elongated obturator having a piercing tip at its front end, an elongated stem, and a base at its other end;
b. a trocar cannula subassembly in which said obturator is removably housed, said trocar cannula subassembly having an outer cannula attached to a main housing and an inner cannula removably interposed with said outer cannula and said main housing, said inner cannula being axially movable relative to said outer cannula between a normally extended position and a retracted position;
c. biasing means acting on the rear end of said inner cannula, whereby said inner cannula is forced to said retracted position to expose said piercing tip when said trocar assembly is being inserted through the wall of the anatomical organ structure and is biased by said biasing means to said extended position to shield said piercing tip once the trocar assembly has pierced the wall.
4. A safety shielded trocar assembly for providing communication to a body cavity during insufflatory surgical procedures wherein said operative body cavity is maintained under gas pressure during said surgical procedure comprising:
a. an elongated obturator having a piercing tip at its front end, an elongated stem, and a base at its other end;
b. a trocar cannula subassembly in which said obturator is removably housed, said trocar cannula subassembly having an outer cannula attached to a main housing and an inner cannula removably interposed with said outer cannula and said main housing, said inner cannula being axially movable relative to said outer cannula between a normally extended position and a retracted position, said inner cannula having a passage adapted for removably housing said obturator;
c. biasing means acting on the rear end of said inner cannula, whereby said inner cannula is forced to said retracted position to expose said piercing tip when said trocar assembly is being inserted through the wall of the body cavity and is biased by said biasing means to said extended position to shield said piercing tip once the trocar assembly has pierced the wall;
d. an upper housing removably secured to said main housing opposite said outer cannula having a passage adapted for receiving said obturator therethrough;
e. means for sealing said upper housing removably located in said upper housing, said sealing means having an upper seal coaxially disposed about said upper housing passage through which said obturator is adapted to extend and a flapper seal coaxially disposed about said upper housing passage to seal said upper housing passage when said obturator is removed
whereby during the surgical procedure the operative body cavity is maintained under gas pressure, and during the surgical procedure said obturator, said upper housing, and said sealing means may be removed to allow unobstructed access through said inner cannula to the body cavity.
5. In a trocar assembly comprising an elongated obturator having a piercing tip at its front end, an elongated trocar tube in which the obturator is housed, a tubular protective shield mounted concentrically around the obturator and being axially movable relative to the obturator between a normally extended position and a retracted position, and biasing means acting on the rear end of the protective shield, whereby the shield is forced to said retracted position to expose the piercing tip when the trocar is being inserted through the wall of a body cavity and is biased by said means to said extended position to shield the piercing tip once the trocar has pierced the wall, the improvement wherein said trocar tube has a removable chamber housing means for sealing said trocar tube whereby said chamber, said sealing means, said obturator, and said protective shield may be removed to allow unobstructed access through said trocar tube to the body cavity.
US09/825,804 1993-09-07 2001-04-04 Safety shielded, reusable trocar Abandoned US20010029387A1 (en)

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US11723393A 1993-09-07 1993-09-07
US08/541,013 US6238407B1 (en) 1993-09-07 1995-10-11 Safety shielded reusable trocar
US09/825,804 US20010029387A1 (en) 1993-09-07 2001-04-04 Safety shielded, reusable trocar

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US08/663,656 Expired - Fee Related US5697947A (en) 1993-09-07 1996-06-14 Trocar obturator including a removable knife
US09/295,251 Expired - Lifetime US6099544A (en) 1993-09-07 1999-04-20 Safety shielded, reusable trocar
US09/825,804 Abandoned US20010029387A1 (en) 1993-09-07 2001-04-04 Safety shielded, reusable trocar

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US08/663,656 Expired - Fee Related US5697947A (en) 1993-09-07 1996-06-14 Trocar obturator including a removable knife
US09/295,251 Expired - Lifetime US6099544A (en) 1993-09-07 1999-04-20 Safety shielded, reusable trocar

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Cited By (76)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040230155A1 (en) * 1999-06-22 2004-11-18 Erblan Surgical Inc. Insufflator and method of use
US20040230160A1 (en) * 2000-06-22 2004-11-18 Erblan Surgical Inc. Safety trocar including sealing member
US20060030870A1 (en) * 2004-08-03 2006-02-09 Staudner Rupert A Trocar with retractable cutting surface
US20060052811A1 (en) * 2002-03-08 2006-03-09 Erblan Surgical Inc. Surgical actuator and locking system
US20070260275A1 (en) * 2006-05-03 2007-11-08 Applied Medical Resources Corporation Flat blade shielded obturator
US20070269474A1 (en) * 2006-03-31 2007-11-22 Gil Carlos E Osteochondral plug graft trimming device and method
US20090270819A1 (en) * 2008-04-29 2009-10-29 Dario Vitali Optical safety trocar and method of use thereof
US20100324488A1 (en) * 2007-02-28 2010-12-23 Smith Robert C Trocar assembly with obturator and retractable stylet
US7942826B1 (en) 2005-06-06 2011-05-17 Nuvasive, Inc. Insulated pedicle access system and related methods
US8142352B2 (en) 2006-04-03 2012-03-27 Welch Allyn, Inc. Vaginal speculum assembly having portable illuminator
US8157728B2 (en) 2005-04-01 2012-04-17 Welch Allyn, Inc. Vaginal speculum
US20120310245A1 (en) * 2006-08-16 2012-12-06 Biomet Sports Medicine, Llc Chondral Defect Repair
US8388523B2 (en) 2005-04-01 2013-03-05 Welch Allyn, Inc. Medical diagnostic instrument having portable illuminator
US8551140B2 (en) 2004-11-05 2013-10-08 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to bone
US8562647B2 (en) 2006-09-29 2013-10-22 Biomet Sports Medicine, Llc Method and apparatus for securing soft tissue to bone
US8574235B2 (en) 2006-02-03 2013-11-05 Biomet Sports Medicine, Llc Method for trochanteric reattachment
US8597327B2 (en) 2006-02-03 2013-12-03 Biomet Manufacturing, Llc Method and apparatus for sternal closure
US8608777B2 (en) 2006-02-03 2013-12-17 Biomet Sports Medicine Method and apparatus for coupling soft tissue to a bone
US8632569B2 (en) 2006-02-03 2014-01-21 Biomet Sports Medicine, Llc Soft tissue repair device and associated methods
US8652172B2 (en) 2006-02-03 2014-02-18 Biomet Sports Medicine, Llc Flexible anchors for tissue fixation
US8652171B2 (en) 2006-02-03 2014-02-18 Biomet Sports Medicine, Llc Method and apparatus for soft tissue fixation
US8657843B2 (en) 2006-05-03 2014-02-25 Applied Medical Resources Corporation Shield lockout for bladed obturator and trocars
US8672968B2 (en) 2006-09-29 2014-03-18 Biomet Sports Medicine, Llc Method for implanting soft tissue
US8672969B2 (en) 2006-09-29 2014-03-18 Biomet Sports Medicine, Llc Fracture fixation device
US8771352B2 (en) 2011-05-17 2014-07-08 Biomet Sports Medicine, Llc Method and apparatus for tibial fixation of an ACL graft
WO2014113421A2 (en) * 2013-01-18 2014-07-24 Covidien Lp Obturator with instrument retention
US8801783B2 (en) 2006-09-29 2014-08-12 Biomet Sports Medicine, Llc Prosthetic ligament system for knee joint
US8840645B2 (en) 2004-11-05 2014-09-23 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US8900314B2 (en) 2009-05-28 2014-12-02 Biomet Manufacturing, Llc Method of implanting a prosthetic knee joint assembly
US8932331B2 (en) 2006-02-03 2015-01-13 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to bone
US8936621B2 (en) 2006-02-03 2015-01-20 Biomet Sports Medicine, Llc Method and apparatus for forming a self-locking adjustable loop
US8956376B2 (en) 2011-06-30 2015-02-17 The Spectranetics Corporation Reentry catheter and method thereof
US8968364B2 (en) 2006-02-03 2015-03-03 Biomet Sports Medicine, Llc Method and apparatus for fixation of an ACL graft
US8998949B2 (en) 2004-11-09 2015-04-07 Biomet Sports Medicine, Llc Soft tissue conduit device
US8998936B2 (en) 2011-06-30 2015-04-07 The Spectranetics Corporation Reentry catheter and method thereof
US9017381B2 (en) 2007-04-10 2015-04-28 Biomet Sports Medicine, Llc Adjustable knotless loops
US9078644B2 (en) 2006-09-29 2015-07-14 Biomet Sports Medicine, Llc Fracture fixation device
US9149267B2 (en) 2006-02-03 2015-10-06 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US9173651B2 (en) 2006-02-03 2015-11-03 Biomet Sports Medicine, Llc Soft tissue repair device and associated methods
US9271713B2 (en) 2006-02-03 2016-03-01 Biomet Sports Medicine, Llc Method and apparatus for tensioning a suture
US9314241B2 (en) 2011-11-10 2016-04-19 Biomet Sports Medicine, Llc Apparatus for coupling soft tissue to a bone
US9357991B2 (en) 2011-11-03 2016-06-07 Biomet Sports Medicine, Llc Method and apparatus for stitching tendons
US9370350B2 (en) 2011-11-10 2016-06-21 Biomet Sports Medicine, Llc Apparatus for coupling soft tissue to a bone
US9381013B2 (en) 2011-11-10 2016-07-05 Biomet Sports Medicine, Llc Method for coupling soft tissue to a bone
US9402621B2 (en) 2006-02-03 2016-08-02 Biomet Sports Medicine, LLC. Method for tissue fixation
US9414925B2 (en) 2006-09-29 2016-08-16 Biomet Manufacturing, Llc Method of implanting a knee prosthesis assembly with a ligament link
US9414833B2 (en) 2006-02-03 2016-08-16 Biomet Sports Medicine, Llc Soft tissue repair assembly and associated method
US9445827B2 (en) 2011-10-25 2016-09-20 Biomet Sports Medicine, Llc Method and apparatus for intraosseous membrane reconstruction
US9492158B2 (en) 2006-02-03 2016-11-15 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US9504460B2 (en) 2004-11-05 2016-11-29 Biomet Sports Medicine, LLC. Soft tissue repair device and method
US9532706B2 (en) 2014-08-07 2017-01-03 Welch Allyn, Inc. Vaginal speculum with illuminator
US9539003B2 (en) 2006-09-29 2017-01-10 Biomet Sports Medicine, LLC. Method and apparatus for forming a self-locking adjustable loop
US9538998B2 (en) 2006-02-03 2017-01-10 Biomet Sports Medicine, Llc Method and apparatus for fracture fixation
US9545264B2 (en) * 2014-06-06 2017-01-17 Surgiquest, Inc. Trocars and obturators
US9572655B2 (en) 2004-11-05 2017-02-21 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US9615822B2 (en) 2014-05-30 2017-04-11 Biomet Sports Medicine, Llc Insertion tools and method for soft anchor
US9700291B2 (en) 2014-06-03 2017-07-11 Biomet Sports Medicine, Llc Capsule retractor
US9750508B1 (en) 2009-11-11 2017-09-05 Nuvasive, Inc. Insulated pedicle access system and related methods
US9757119B2 (en) 2013-03-08 2017-09-12 Biomet Sports Medicine, Llc Visual aid for identifying suture limbs arthroscopically
US9801708B2 (en) 2004-11-05 2017-10-31 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US9814862B2 (en) 2011-06-30 2017-11-14 The Spectranetics Corporation Reentry catheter and method thereof
US9918827B2 (en) 2013-03-14 2018-03-20 Biomet Sports Medicine, Llc Scaffold for spring ligament repair
US9918826B2 (en) 2006-09-29 2018-03-20 Biomet Sports Medicine, Llc Scaffold for spring ligament repair
US9955980B2 (en) 2015-02-24 2018-05-01 Biomet Sports Medicine, Llc Anatomic soft tissue repair
WO2018098086A1 (en) * 2016-11-23 2018-05-31 Eca Medical Instruments Orbital trocar device with detachable handle and associated methods
US10039543B2 (en) 2014-08-22 2018-08-07 Biomet Sports Medicine, Llc Non-sliding soft anchor
US10098647B2 (en) 2015-01-13 2018-10-16 Eca Medical Instruments Trocar device with detachable handle and associated methods
US10136886B2 (en) 2013-12-20 2018-11-27 Biomet Sports Medicine, Llc Knotless soft tissue devices and techniques
US20190223903A1 (en) * 2016-06-10 2019-07-25 Fresenius Kabi Deutschland Gmbh Cannulation device
US10517587B2 (en) 2006-02-03 2019-12-31 Biomet Sports Medicine, Llc Method and apparatus for forming a self-locking adjustable loop
US10912551B2 (en) 2015-03-31 2021-02-09 Biomet Sports Medicine, Llc Suture anchor with soft anchor of electrospun fibers
US11259794B2 (en) 2006-09-29 2022-03-01 Biomet Sports Medicine, Llc Method for implanting soft tissue
US11259792B2 (en) 2006-02-03 2022-03-01 Biomet Sports Medicine, Llc Method and apparatus for coupling anatomical features
US11311287B2 (en) 2006-02-03 2022-04-26 Biomet Sports Medicine, Llc Method for tissue fixation
US11484324B2 (en) 2016-11-23 2022-11-01 Eca Medical Instruments Orbital trocar hole carving device with detachable handle and associated methods
WO2022251203A1 (en) * 2021-05-25 2022-12-01 Sackett Samuel Gregory Safety trocar assembly

Families Citing this family (82)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2297488A (en) * 1995-02-02 1996-08-07 Microsurgical Equipment Ltd Trocar obturator guard
US5807338A (en) * 1995-10-20 1998-09-15 United States Surgical Corporation Modular trocar system and methods of assembly
US6106539A (en) * 1998-04-15 2000-08-22 Neosurg Technologies Trocar with removable, replaceable tip
US6280417B1 (en) 1999-02-23 2001-08-28 Needberg Technologies, Inc. Trocar
DE19908721A1 (en) 1999-03-01 2000-09-28 Storz Karl Gmbh & Co Kg Instrument for cutting biological and especially human tissue
US6582446B1 (en) * 1999-05-06 2003-06-24 J. Alexander Marchosky Method and apparatus for percutaneous osteoplasty
US20060015075A1 (en) * 1999-06-22 2006-01-19 Erblan Surgical Inc. Guarded infusor needle and infusor locking system
US6270501B1 (en) 1999-11-08 2001-08-07 The Regents Of The University Of Michigan Surgical method and apparatus and cannulated scalpel for use therein
USD449887S1 (en) 2000-01-26 2001-10-30 Genicon Lc Combined obturator, cannula and valve assembly
US6319266B1 (en) 2000-03-16 2001-11-20 United States Surgical Corporation Trocar system and method of use
USD443360S1 (en) 2000-03-22 2001-06-05 Dexterity Surgical Inc. Distal end of obturator for a trocar
US6740064B1 (en) * 2000-05-08 2004-05-25 Tyco Healthcare Group Lp Reusable nonmetallic cannula
DE10022861C2 (en) * 2000-05-10 2002-04-04 Wolf Gmbh Richard Guide rod for tubular shaft instruments to be inserted into a body cavity
US6884253B1 (en) 2000-05-16 2005-04-26 Taut, Inc. Penetrating tip for trocar assembly
US8398666B2 (en) * 2000-05-16 2013-03-19 Teleflex Medical Incorporated Penetrating tip for trocar assembly
US20020161387A1 (en) * 2000-06-22 2002-10-31 Blanco Ernesto E. Safety trocar with progressive cutting tip guards and gas jet tissue deflector
JP4860888B2 (en) * 2000-08-08 2012-01-25 タイコ ヘルスケア グループ リミテッド パートナーシップ Molded trocar latch
US6811546B1 (en) 2000-08-25 2004-11-02 Origin Medsystems, Inc. Endoscopic surgical access port and method
US7001396B2 (en) * 2003-03-26 2006-02-21 Enpath Medical, Inc. Safety introducer assembly and method
US20040092879A1 (en) * 2000-11-06 2004-05-13 Medamicus, Inc. Safety introducer apparatus and method therefor
US7055943B2 (en) * 2001-08-22 2006-06-06 Canon Kabushiki Kaisha Ink set for ink-jet recording, recording unit, ink-jet recording apparatus and ink-jet recording method
EP2769683B1 (en) 2001-09-24 2017-07-12 Applied Medical Resources Corporation Bladeless obturator
US6830578B2 (en) * 2001-11-26 2004-12-14 Neosurg Technologies, Inc. Trocar
US7544177B2 (en) * 2002-01-24 2009-06-09 The Regents Of The University Of California Aerosol device to deliver bioactive agent
US6715211B1 (en) * 2002-02-26 2004-04-06 Chih-Sung Chi Mounting and fixing structure of a handle and a tool head of a hand tool
US6626927B1 (en) 2002-03-11 2003-09-30 Michael L. Koplen Tattoo system
ITPD20020100A1 (en) * 2002-04-22 2003-10-22 Emmebi Srl TROCAR FOR ENGRAVINGS WITH COVERING AND DISCOVERY MECHANISM OF THE SCALPEL
DE60337002D1 (en) 2002-05-16 2011-06-16 Applied Med Resources OBTURATOR WITH CONE TIP
GB0215537D0 (en) * 2002-07-05 2002-08-14 Surgical Innovations Ltd Trocar shield
US20050040065A1 (en) * 2003-08-22 2005-02-24 O'heeron Peter T. Medical procedure kit
US6960164B2 (en) * 2003-08-01 2005-11-01 Neosurg Technologies, Inc. Obturator tip for a trocar
US7338494B2 (en) * 2003-08-19 2008-03-04 Synthes (U.S.A.) Spring-loaded awl
EP2543329B1 (en) 2003-10-03 2014-02-12 Applied Medical Resources Corporation Bladeless optical obturator
US8066729B2 (en) * 2004-03-02 2011-11-29 Stryker Corporation Surgical obturator
US7320694B2 (en) * 2004-03-11 2008-01-22 Coopersurgical, Inc. Obturator tip
US20050203467A1 (en) * 2004-03-15 2005-09-15 O'heeron Peter T. Trocar seal
US20050209608A1 (en) * 2004-03-22 2005-09-22 O'heeron Peter T Trocar seal
US20080097504A1 (en) * 2004-05-21 2008-04-24 Keshava Datta Trocar obturator with cutting edges
GB0411683D0 (en) * 2004-05-25 2004-06-30 Chello Broadband N V Triggering enhanced content
EP2545871B1 (en) 2004-06-29 2015-02-11 Applied Medical Resources Corporation Insufflating optical surgical instrument
US7988670B2 (en) 2005-06-30 2011-08-02 Tyco Healthcare Group Lp Trocar assembly with rotatable obturator housing
US7682155B2 (en) * 2005-11-03 2010-03-23 Meridian Medical Technologies, Inc. Training device for an automatic injector
US8728037B2 (en) 2006-04-18 2014-05-20 Ethicon Endo-Surgery, Inc. Pleated trocar seal
US7789861B2 (en) * 2006-04-18 2010-09-07 Ethicon Endo-Surgery, Inc. Pleated trocar seal
US7846134B1 (en) * 2006-06-23 2010-12-07 Timothy Nadolski Flexible walled cannula
US20070299459A1 (en) * 2006-06-26 2007-12-27 X-Sten Corp. Percutaneous Tissue Access Device
US9113953B2 (en) * 2006-07-06 2015-08-25 Covidien Lp Two-mode trocar assembly
EP2984993B1 (en) 2006-10-06 2019-09-11 Applied Medical Resources Corporation Visual insufflation port
CA2682696A1 (en) 2007-04-18 2008-10-30 Tyco Healthcare Group Lp Trocar assembly with obturator dissector
AU2008202266B2 (en) * 2007-06-01 2013-09-12 Covidien Lp Obturator tips
US20080319467A1 (en) * 2007-06-22 2008-12-25 Thomas Wenchell Thin bladed obturator
AU2008229774B2 (en) 2007-10-05 2013-05-16 Covidien Lp Two-mode bladeless trocar assembly
JP5432924B2 (en) 2008-01-25 2014-03-05 アプライド メディカル リソーシーズ コーポレイション Insufflation access system
EP2274039A2 (en) 2008-05-06 2011-01-19 Wilson-Cook Medical Inc. Apparatus and methods for delivering therapeutic agents
US8911463B2 (en) * 2008-06-10 2014-12-16 Covidien Lp Bladed/bladeless obturator for use in a surgical trocar assembly
ES2917876T3 (en) 2008-09-29 2022-07-12 Applied Med Resources First Entry Trocar System
US8361054B2 (en) 2008-12-23 2013-01-29 Cook Medical Technologies Llc Apparatus and methods for containing and delivering therapeutic agents
US8137319B2 (en) * 2009-03-20 2012-03-20 Tyco Healthcare Group Lp Access port including centering feature
US8118777B2 (en) 2009-05-29 2012-02-21 Cook Medical Technologies Llc Systems and methods for delivering therapeutic agents
US9101744B2 (en) 2009-05-29 2015-08-11 Cook Medical Technologies Llc Systems and methods for delivering therapeutic agents
US9226774B2 (en) 2009-12-17 2016-01-05 Covidien Lp Visual obturator with tip openings
US8979883B2 (en) 2009-12-17 2015-03-17 Covidien Lp Obturator tip
CN102665580B (en) 2009-12-23 2015-04-08 爱尔康研究有限公司 Ophthalmic valved trocar cannula
US8343106B2 (en) 2009-12-23 2013-01-01 Alcon Research, Ltd. Ophthalmic valved trocar vent
US8956341B2 (en) 2010-06-10 2015-02-17 Carefusion 2200, Inc. Surgical device with reusable handle
US8992579B1 (en) 2011-03-08 2015-03-31 Nuvasive, Inc. Lateral fixation constructs and related methods
KR20140018324A (en) 2011-05-02 2014-02-12 어플라이드 메디컬 리소시스 코포레이션 Low-profile surgical universal access port
US9060815B1 (en) 2012-03-08 2015-06-23 Nuvasive, Inc. Systems and methods for performing spine surgery
US9844408B2 (en) * 2012-11-30 2017-12-19 Gyrus Acmi, Inc. Replacable debrider blade module with latching mechanism
US9867931B2 (en) 2013-10-02 2018-01-16 Cook Medical Technologies Llc Therapeutic agents for delivery using a catheter and pressure source
US9517089B1 (en) 2013-10-08 2016-12-13 Nuvasive, Inc. Bone anchor with offset rod connector
CN103815954B (en) * 2014-03-24 2016-08-17 邹树 Gallbladder launches perforator
USD773664S1 (en) * 2014-03-26 2016-12-06 BioTE Medical, LLC Trocar
USD737973S1 (en) * 2014-04-03 2015-09-01 Karl Storz Gmbh & Co. Kg Trocar sleeve
CN104068921B (en) * 2014-06-26 2016-06-29 浙江天松医疗器械股份有限公司 Perforator
US10080583B2 (en) 2014-12-12 2018-09-25 Depuy Mitel, Llc Dilator for accessing a joint space
USD800307S1 (en) * 2016-02-25 2017-10-17 BioTE Medical, LLC Trocar
US10089902B2 (en) * 2016-05-23 2018-10-02 Noble International, Inc. Resettable locking shield-activated auto injector training device
US10646250B2 (en) 2016-07-19 2020-05-12 Reza Mohajer-Shojaee Trocar assemblies with movable atraumatic tip and methods for use
CN106166082B (en) * 2016-08-26 2018-08-17 任飞 From retraction puncture outfit
CN107928766B (en) * 2017-12-12 2020-07-03 蔡绪虎 Medical treatment is with totally enclosed piercing depth
WO2020058795A1 (en) 2018-09-17 2020-03-26 Alcon Inc. Low friction trocar valve

Family Cites Families (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3097647A (en) 1958-09-12 1963-07-16 Brunswick Corp Surgical apparatus
US3097646A (en) 1960-12-06 1963-07-16 Abbott Lab Venous catheter apparatus
US3313299A (en) 1964-02-05 1967-04-11 Richard G Spademan Intravascular catheter with coaxial puncturing means
US3454006A (en) 1966-01-28 1969-07-08 Weck & Co Inc Edward Intravenous catheter-needle assembly provided with needle bushing guide
US3613684A (en) 1969-09-19 1971-10-19 David S Sheridan Trocar catheters
US3989049A (en) 1973-07-30 1976-11-02 In Bae Yoon Method of applying an elastic ring to an anatomical tubular structure
US3994287A (en) 1974-07-01 1976-11-30 Centre De Recherche Industrielle Du Quebec Trocar
US4177814A (en) 1978-01-18 1979-12-11 KLI, Incorporated Self-sealing cannula
US4254762A (en) 1979-10-23 1981-03-10 Inbae Yoon Safety endoscope system
US4535773A (en) 1982-03-26 1985-08-20 Inbae Yoon Safety puncturing instrument and method
US4601710B1 (en) * 1983-08-24 1998-05-05 United States Surgical Corp Trocar assembly
US4788976A (en) * 1986-02-21 1988-12-06 Dee Robert N Universally adjustable blade
US4654030A (en) 1986-02-24 1987-03-31 Endotherapeutics Trocar
US4902280A (en) * 1986-10-17 1990-02-20 United States Surgical Corporation Trocar
US5030206A (en) * 1986-10-17 1991-07-09 United States Surgical Corporation Trocar
US5055166A (en) * 1986-12-29 1991-10-08 Matcor, Inc. Surface mounted cathodic protection anode and method of use
DE3852463T2 (en) * 1987-10-13 1995-05-18 United States Surgical Corp Trocar cutlery.
US4931042A (en) * 1987-10-26 1990-06-05 Endotherapeutics Trocar assembly with improved latch
US5114407A (en) * 1990-08-30 1992-05-19 Ethicon, Inc. Safety mechanism for trocar
US5685820A (en) * 1990-11-06 1997-11-11 Partomed Medizintechnik Gmbh Instrument for the penetration of body tissue
US5350393A (en) * 1992-01-06 1994-09-27 Inbae Yoon Safety trocar penetrating instrument
US5431635A (en) * 1990-12-18 1995-07-11 Yoon; Inbae Safety penetrating instrument having a triggered safety member for establishing an endoscopic portal in an anatomical cavity wall
US5226426A (en) * 1990-12-18 1993-07-13 Inbae Yoon Safety penetrating instrument
US5645556A (en) * 1990-12-18 1997-07-08 Yoon; Inbae Safety penetrating instrument with triggered penetrating member retraction and single or multiple safety member protrusion
US5104382A (en) * 1991-01-15 1992-04-14 Ethicon, Inc. Trocar
US5645076A (en) * 1991-08-14 1997-07-08 Yoon; Inbae Automatic retractable safety penetrating instrument
US5312354A (en) * 1991-11-04 1994-05-17 American Cyanamid Company Safety trocar instrument having a retractable point actuated by a trigger sleeve
US5256147A (en) * 1992-06-17 1993-10-26 Minnesota Mining And Manufacturing Company Reusable trocar with easily replaceable obturator
US5405328A (en) * 1992-06-17 1995-04-11 Minnesota Mining And Manufacturing Company Trocar with replaceable obturator
US5275583A (en) * 1992-10-05 1994-01-04 Lawrence Crainich Trocar assembly with independently acting shield means
US5562696A (en) * 1992-11-12 1996-10-08 Cordis Innovasive Systems, Inc. Visualization trocar
US5334150A (en) * 1992-11-17 1994-08-02 Kaali Steven G Visually directed trocar for laparoscopic surgical procedures and method of using same
US5417705A (en) * 1993-05-14 1995-05-23 Habley Medical Technology Corp. Obturator with rotating, resettable safety shield
US5569289A (en) * 1993-06-24 1996-10-29 Yoon; Inbae Safety penetrating instrument with penetrating member and cannula moving during penetration and triggered safety member protusion
US5411515A (en) * 1993-07-29 1995-05-02 Habley Medical Technology Corporation Obturator with rotating, self-locking and resettable safety shield
US5522833A (en) * 1994-08-29 1996-06-04 Ethicon Endo-Surgery, Inc. Retractable obturator for a trocar

Cited By (191)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040230155A1 (en) * 1999-06-22 2004-11-18 Erblan Surgical Inc. Insufflator and method of use
US20040230160A1 (en) * 2000-06-22 2004-11-18 Erblan Surgical Inc. Safety trocar including sealing member
US20060052811A1 (en) * 2002-03-08 2006-03-09 Erblan Surgical Inc. Surgical actuator and locking system
US20090240275A9 (en) * 2002-03-08 2009-09-24 Erblan Surgical Inc. Surgical actuator and locking system
US7419496B2 (en) * 2004-08-03 2008-09-02 Staudner Rupert A Trocar with retractable cutting surface
US20060030870A1 (en) * 2004-08-03 2006-02-09 Staudner Rupert A Trocar with retractable cutting surface
US8551140B2 (en) 2004-11-05 2013-10-08 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to bone
US9801708B2 (en) 2004-11-05 2017-10-31 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US11109857B2 (en) 2004-11-05 2021-09-07 Biomet Sports Medicine, Llc Soft tissue repair device and method
US8840645B2 (en) 2004-11-05 2014-09-23 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US9504460B2 (en) 2004-11-05 2016-11-29 Biomet Sports Medicine, LLC. Soft tissue repair device and method
US10265064B2 (en) 2004-11-05 2019-04-23 Biomet Sports Medicine, Llc Soft tissue repair device and method
US9572655B2 (en) 2004-11-05 2017-02-21 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US8998949B2 (en) 2004-11-09 2015-04-07 Biomet Sports Medicine, Llc Soft tissue conduit device
US11291359B2 (en) * 2005-04-01 2022-04-05 Welch Allyn, Inc. Vaginal speculum apparatus
US8388523B2 (en) 2005-04-01 2013-03-05 Welch Allyn, Inc. Medical diagnostic instrument having portable illuminator
US8435175B2 (en) 2005-04-01 2013-05-07 Welch Allyn, Inc. Vaginal speculum apparatus
US9883792B2 (en) 2005-04-01 2018-02-06 Welch Allyn, Inc. Vaginal speculum apparatus
US9949633B2 (en) 2005-04-01 2018-04-24 Welch Allyn, Inc. Vaginal speculum apparatus
US9332898B2 (en) 2005-04-01 2016-05-10 Welch Allyn, Inc. Vaginal speculum apparatus
US8157728B2 (en) 2005-04-01 2012-04-17 Welch Allyn, Inc. Vaginal speculum
US8821395B2 (en) 2005-04-01 2014-09-02 Welch Allyn, Inc. Vaginal speculum apparatus
US11213236B2 (en) 2005-06-06 2022-01-04 Nuvasive, Inc. Insulated pedicle access system and related methods
US8784330B1 (en) 2005-06-06 2014-07-22 Nu Vasive, Inc. Insulated pedicle access system and related methods
US7942826B1 (en) 2005-06-06 2011-05-17 Nuvasive, Inc. Insulated pedicle access system and related methods
US10517502B1 (en) 2005-06-06 2019-12-31 Nuvasive, Inc. Insulated pedicle access system and related methods
US9801620B2 (en) 2006-02-03 2017-10-31 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to bone
US9763656B2 (en) 2006-02-03 2017-09-19 Biomet Sports Medicine, Llc Method and apparatus for soft tissue fixation
US11896210B2 (en) 2006-02-03 2024-02-13 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US8721684B2 (en) 2006-02-03 2014-05-13 Biomet Sports Medicine, Llc Method and apparatus for coupling anatomical features
US8771316B2 (en) 2006-02-03 2014-07-08 Biomet Sports Medicine, Llc Method and apparatus for coupling anatomical features
US11819205B2 (en) 2006-02-03 2023-11-21 Biomet Sports Medicine, Llc Soft tissue repair device and associated methods
US11786236B2 (en) 2006-02-03 2023-10-17 Biomet Sports Medicine, Llc Method and apparatus for coupling anatomical features
US11730464B2 (en) 2006-02-03 2023-08-22 Biomet Sports Medicine, Llc Soft tissue repair assembly and associated method
US8652171B2 (en) 2006-02-03 2014-02-18 Biomet Sports Medicine, Llc Method and apparatus for soft tissue fixation
US8652172B2 (en) 2006-02-03 2014-02-18 Biomet Sports Medicine, Llc Flexible anchors for tissue fixation
US11723648B2 (en) 2006-02-03 2023-08-15 Biomet Sports Medicine, Llc Method and apparatus for soft tissue fixation
US11617572B2 (en) 2006-02-03 2023-04-04 Biomet Sports Medicine, Llc Soft tissue repair device and associated methods
US8932331B2 (en) 2006-02-03 2015-01-13 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to bone
US8936621B2 (en) 2006-02-03 2015-01-20 Biomet Sports Medicine, Llc Method and apparatus for forming a self-locking adjustable loop
US11589859B2 (en) 2006-02-03 2023-02-28 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to bone
US8968364B2 (en) 2006-02-03 2015-03-03 Biomet Sports Medicine, Llc Method and apparatus for fixation of an ACL graft
US8632569B2 (en) 2006-02-03 2014-01-21 Biomet Sports Medicine, Llc Soft tissue repair device and associated methods
US11471147B2 (en) 2006-02-03 2022-10-18 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US9005287B2 (en) 2006-02-03 2015-04-14 Biomet Sports Medicine, Llc Method for bone reattachment
US11446019B2 (en) 2006-02-03 2022-09-20 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US11317907B2 (en) 2006-02-03 2022-05-03 Biomet Sports Medicine, Llc Method and apparatus for forming a self-locking adjustable loop
US9149267B2 (en) 2006-02-03 2015-10-06 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US9173651B2 (en) 2006-02-03 2015-11-03 Biomet Sports Medicine, Llc Soft tissue repair device and associated methods
US11311287B2 (en) 2006-02-03 2022-04-26 Biomet Sports Medicine, Llc Method for tissue fixation
US9271713B2 (en) 2006-02-03 2016-03-01 Biomet Sports Medicine, Llc Method and apparatus for tensioning a suture
US10154837B2 (en) 2006-02-03 2018-12-18 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US10004489B2 (en) 2006-02-03 2018-06-26 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US10004588B2 (en) 2006-02-03 2018-06-26 Biomet Sports Medicine, Llc Method and apparatus for fixation of an ACL graft
US9993241B2 (en) 2006-02-03 2018-06-12 Biomet Sports Medicine, Llc Method and apparatus for forming a self-locking adjustable loop
US11284884B2 (en) 2006-02-03 2022-03-29 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US8608777B2 (en) 2006-02-03 2013-12-17 Biomet Sports Medicine Method and apparatus for coupling soft tissue to a bone
US11259792B2 (en) 2006-02-03 2022-03-01 Biomet Sports Medicine, Llc Method and apparatus for coupling anatomical features
US10251637B2 (en) 2006-02-03 2019-04-09 Biomet Sports Medicine, Llc Soft tissue repair device and associated methods
US11116495B2 (en) 2006-02-03 2021-09-14 Biomet Sports Medicine, Llc Soft tissue repair assembly and associated method
US11065103B2 (en) 2006-02-03 2021-07-20 Biomet Sports Medicine, Llc Method and apparatus for fixation of an ACL graft
US9402621B2 (en) 2006-02-03 2016-08-02 Biomet Sports Medicine, LLC. Method for tissue fixation
US9532777B2 (en) 2006-02-03 2017-01-03 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US10987099B2 (en) 2006-02-03 2021-04-27 Biomet Sports Medicine, Llc Method for tissue fixation
US10321906B2 (en) 2006-02-03 2019-06-18 Biomet Sports Medicine, Llc Method for tissue fixation
US10973507B2 (en) 2006-02-03 2021-04-13 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US9468433B2 (en) 2006-02-03 2016-10-18 Biomet Sports Medicine, Llc Method and apparatus for forming a self-locking adjustable loop
US10022118B2 (en) 2006-02-03 2018-07-17 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US10932770B2 (en) 2006-02-03 2021-03-02 Biomet Sports Medicine, Llc Soft tissue repair device and associated methods
US9492158B2 (en) 2006-02-03 2016-11-15 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US9498204B2 (en) 2006-02-03 2016-11-22 Biomet Sports Medicine, Llc Method and apparatus for coupling anatomical features
US8597327B2 (en) 2006-02-03 2013-12-03 Biomet Manufacturing, Llc Method and apparatus for sternal closure
US9510819B2 (en) 2006-02-03 2016-12-06 Biomet Sports Medicine, Llc Soft tissue repair device and associated methods
US9510821B2 (en) 2006-02-03 2016-12-06 Biomet Sports Medicine, Llc Method and apparatus for coupling anatomical features
US11039826B2 (en) 2006-02-03 2021-06-22 Biomet Sports Medicine, Llc Method and apparatus for forming a self-locking adjustable loop
US10729430B2 (en) 2006-02-03 2020-08-04 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US10729421B2 (en) 2006-02-03 2020-08-04 Biomet Sports Medicine, Llc Method and apparatus for soft tissue fixation
US9538998B2 (en) 2006-02-03 2017-01-10 Biomet Sports Medicine, Llc Method and apparatus for fracture fixation
US10716557B2 (en) 2006-02-03 2020-07-21 Biomet Sports Medicine, Llc Method and apparatus for coupling anatomical features
US9561025B2 (en) 2006-02-03 2017-02-07 Biomet Sports Medicine, Llc Soft tissue repair device and associated methods
US8574235B2 (en) 2006-02-03 2013-11-05 Biomet Sports Medicine, Llc Method for trochanteric reattachment
US9603591B2 (en) 2006-02-03 2017-03-28 Biomet Sports Medicine, Llc Flexible anchors for tissue fixation
US10702259B2 (en) 2006-02-03 2020-07-07 Biomet Sports Medicine, Llc Soft tissue repair assembly and associated method
US9622736B2 (en) 2006-02-03 2017-04-18 Biomet Sports Medicine, Llc Soft tissue repair device and associated methods
US9642661B2 (en) 2006-02-03 2017-05-09 Biomet Sports Medicine, Llc Method and Apparatus for Sternal Closure
US10695052B2 (en) 2006-02-03 2020-06-30 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US10687803B2 (en) 2006-02-03 2020-06-23 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US10675073B2 (en) 2006-02-03 2020-06-09 Biomet Sports Medicine, Llc Method and apparatus for sternal closure
US10603029B2 (en) 2006-02-03 2020-03-31 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to bone
US10595851B2 (en) 2006-02-03 2020-03-24 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US9414833B2 (en) 2006-02-03 2016-08-16 Biomet Sports Medicine, Llc Soft tissue repair assembly and associated method
US10542967B2 (en) 2006-02-03 2020-01-28 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US10517587B2 (en) 2006-02-03 2019-12-31 Biomet Sports Medicine, Llc Method and apparatus for forming a self-locking adjustable loop
US10441264B2 (en) 2006-02-03 2019-10-15 Biomet Sports Medicine, Llc Soft tissue repair assembly and associated method
US10092288B2 (en) 2006-02-03 2018-10-09 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US10098629B2 (en) 2006-02-03 2018-10-16 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US10398428B2 (en) 2006-02-03 2019-09-03 Biomet Sports Medicine, Llc Method and apparatus for coupling anatomical features
US7997174B2 (en) * 2006-03-31 2011-08-16 Warsaw Orthopedic, Inc. Osteochondral plug graft trimming device and method
US20110144648A1 (en) * 2006-03-31 2011-06-16 Warsaw Orthopedic, Inc. Osteochondral plug graft trimming device and method
US20070269474A1 (en) * 2006-03-31 2007-11-22 Gil Carlos E Osteochondral plug graft trimming device and method
US8893596B2 (en) 2006-03-31 2014-11-25 Warsaw Orthopedic, Inc. Osteochondral plug graft trimming device and method
US8142352B2 (en) 2006-04-03 2012-03-27 Welch Allyn, Inc. Vaginal speculum assembly having portable illuminator
US9474548B2 (en) 2006-05-03 2016-10-25 Applied Medical Resources Corporation Shield lockout for bladed obturator and trocars
US20070260275A1 (en) * 2006-05-03 2007-11-08 Applied Medical Resources Corporation Flat blade shielded obturator
US8801741B2 (en) 2006-05-03 2014-08-12 Applied Medical Resources Corporation Flat blade shielded obturator
US8657843B2 (en) 2006-05-03 2014-02-25 Applied Medical Resources Corporation Shield lockout for bladed obturator and trocars
US20120310245A1 (en) * 2006-08-16 2012-12-06 Biomet Sports Medicine, Llc Chondral Defect Repair
US8777956B2 (en) * 2006-08-16 2014-07-15 Biomet Sports Medicine, Llc Chondral defect repair
US10004493B2 (en) 2006-09-29 2018-06-26 Biomet Sports Medicine, Llc Method for implanting soft tissue
US10610217B2 (en) 2006-09-29 2020-04-07 Biomet Sports Medicine, Llc Method and apparatus for forming a self-locking adjustable loop
US8672969B2 (en) 2006-09-29 2014-03-18 Biomet Sports Medicine, Llc Fracture fixation device
US8672968B2 (en) 2006-09-29 2014-03-18 Biomet Sports Medicine, Llc Method for implanting soft tissue
US8801783B2 (en) 2006-09-29 2014-08-12 Biomet Sports Medicine, Llc Prosthetic ligament system for knee joint
US11672527B2 (en) 2006-09-29 2023-06-13 Biomet Sports Medicine, Llc Method for implanting soft tissue
US9539003B2 (en) 2006-09-29 2017-01-10 Biomet Sports Medicine, LLC. Method and apparatus for forming a self-locking adjustable loop
US11259794B2 (en) 2006-09-29 2022-03-01 Biomet Sports Medicine, Llc Method for implanting soft tissue
US9918826B2 (en) 2006-09-29 2018-03-20 Biomet Sports Medicine, Llc Scaffold for spring ligament repair
US9414925B2 (en) 2006-09-29 2016-08-16 Biomet Manufacturing, Llc Method of implanting a knee prosthesis assembly with a ligament link
US10695045B2 (en) 2006-09-29 2020-06-30 Biomet Sports Medicine, Llc Method and apparatus for attaching soft tissue to bone
US9681940B2 (en) 2006-09-29 2017-06-20 Biomet Sports Medicine, Llc Ligament system for knee joint
US9486211B2 (en) 2006-09-29 2016-11-08 Biomet Sports Medicine, Llc Method for implanting soft tissue
US9833230B2 (en) 2006-09-29 2017-12-05 Biomet Sports Medicine, Llc Fracture fixation device
US10349931B2 (en) 2006-09-29 2019-07-16 Biomet Sports Medicine, Llc Fracture fixation device
US9078644B2 (en) 2006-09-29 2015-07-14 Biomet Sports Medicine, Llc Fracture fixation device
US11096684B2 (en) 2006-09-29 2021-08-24 Biomet Sports Medicine, Llc Method and apparatus for forming a self-locking adjustable loop
US9724090B2 (en) 2006-09-29 2017-08-08 Biomet Manufacturing, Llc Method and apparatus for attaching soft tissue to bone
US10398430B2 (en) 2006-09-29 2019-09-03 Biomet Sports Medicine, Llc Method for implanting soft tissue
US10835232B2 (en) 2006-09-29 2020-11-17 Biomet Sports Medicine, Llc Fracture fixation device
US8562647B2 (en) 2006-09-29 2013-10-22 Biomet Sports Medicine, Llc Method and apparatus for securing soft tissue to bone
US10743925B2 (en) 2006-09-29 2020-08-18 Biomet Sports Medicine, Llc Fracture fixation device
US9788876B2 (en) 2006-09-29 2017-10-17 Biomet Sports Medicine, Llc Fracture fixation device
US10517714B2 (en) 2006-09-29 2019-12-31 Biomet Sports Medicine, Llc Ligament system for knee joint
US11376115B2 (en) 2006-09-29 2022-07-05 Biomet Sports Medicine, Llc Prosthetic ligament system for knee joint
US11612391B2 (en) 2007-01-16 2023-03-28 Biomet Sports Medicine, Llc Soft tissue repair device and associated methods
US20100324488A1 (en) * 2007-02-28 2010-12-23 Smith Robert C Trocar assembly with obturator and retractable stylet
US9320541B2 (en) * 2007-02-28 2016-04-26 Covidien Lp Trocar assembly with obturator and retractable stylet
US9861351B2 (en) 2007-04-10 2018-01-09 Biomet Sports Medicine, Llc Adjustable knotless loops
US9017381B2 (en) 2007-04-10 2015-04-28 Biomet Sports Medicine, Llc Adjustable knotless loops
US11185320B2 (en) 2007-04-10 2021-11-30 Biomet Sports Medicine, Llc Adjustable knotless loops
US10729423B2 (en) 2007-04-10 2020-08-04 Biomet Sports Medicine, Llc Adjustable knotless loops
US20090270819A1 (en) * 2008-04-29 2009-10-29 Dario Vitali Optical safety trocar and method of use thereof
US11534159B2 (en) 2008-08-22 2022-12-27 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US10149767B2 (en) 2009-05-28 2018-12-11 Biomet Manufacturing, Llc Method of implanting knee prosthesis assembly with ligament link
US8900314B2 (en) 2009-05-28 2014-12-02 Biomet Manufacturing, Llc Method of implanting a prosthetic knee joint assembly
US9750508B1 (en) 2009-11-11 2017-09-05 Nuvasive, Inc. Insulated pedicle access system and related methods
US9216078B2 (en) 2011-05-17 2015-12-22 Biomet Sports Medicine, Llc Method and apparatus for tibial fixation of an ACL graft
US8771352B2 (en) 2011-05-17 2014-07-08 Biomet Sports Medicine, Llc Method and apparatus for tibial fixation of an ACL graft
US8956376B2 (en) 2011-06-30 2015-02-17 The Spectranetics Corporation Reentry catheter and method thereof
US10709872B2 (en) 2011-06-30 2020-07-14 The Spectranetics Corporation Reentry catheter and method thereof
US10603467B2 (en) 2011-06-30 2020-03-31 The Spectranetics Corporation Reentry catheter and method thereof
US9775969B2 (en) 2011-06-30 2017-10-03 The Spectranetics Corporation Reentry catheter and method thereof
US9814862B2 (en) 2011-06-30 2017-11-14 The Spectranetics Corporation Reentry catheter and method thereof
US8998936B2 (en) 2011-06-30 2015-04-07 The Spectranetics Corporation Reentry catheter and method thereof
US9408998B2 (en) 2011-06-30 2016-08-09 The Spectranetics Corporation Reentry catheter and method thereof
US10183151B2 (en) 2011-06-30 2019-01-22 Spectranetics Corporation Reentry catheter and method thereof
US9445827B2 (en) 2011-10-25 2016-09-20 Biomet Sports Medicine, Llc Method and apparatus for intraosseous membrane reconstruction
US9357991B2 (en) 2011-11-03 2016-06-07 Biomet Sports Medicine, Llc Method and apparatus for stitching tendons
US10265159B2 (en) 2011-11-03 2019-04-23 Biomet Sports Medicine, Llc Method and apparatus for stitching tendons
US11241305B2 (en) 2011-11-03 2022-02-08 Biomet Sports Medicine, Llc Method and apparatus for stitching tendons
US9314241B2 (en) 2011-11-10 2016-04-19 Biomet Sports Medicine, Llc Apparatus for coupling soft tissue to a bone
US9381013B2 (en) 2011-11-10 2016-07-05 Biomet Sports Medicine, Llc Method for coupling soft tissue to a bone
US9370350B2 (en) 2011-11-10 2016-06-21 Biomet Sports Medicine, Llc Apparatus for coupling soft tissue to a bone
US11534157B2 (en) 2011-11-10 2022-12-27 Biomet Sports Medicine, Llc Method for coupling soft tissue to a bone
US9357992B2 (en) 2011-11-10 2016-06-07 Biomet Sports Medicine, Llc Method for coupling soft tissue to a bone
US10363028B2 (en) 2011-11-10 2019-07-30 Biomet Sports Medicine, Llc Method for coupling soft tissue to a bone
US10368856B2 (en) 2011-11-10 2019-08-06 Biomet Sports Medicine, Llc Apparatus for coupling soft tissue to a bone
WO2014113421A2 (en) * 2013-01-18 2014-07-24 Covidien Lp Obturator with instrument retention
WO2014113421A3 (en) * 2013-01-18 2014-10-23 Covidien Lp Obturator with instrument retention
US9757119B2 (en) 2013-03-08 2017-09-12 Biomet Sports Medicine, Llc Visual aid for identifying suture limbs arthroscopically
US9918827B2 (en) 2013-03-14 2018-03-20 Biomet Sports Medicine, Llc Scaffold for spring ligament repair
US10758221B2 (en) 2013-03-14 2020-09-01 Biomet Sports Medicine, Llc Scaffold for spring ligament repair
US10806443B2 (en) 2013-12-20 2020-10-20 Biomet Sports Medicine, Llc Knotless soft tissue devices and techniques
US11648004B2 (en) 2013-12-20 2023-05-16 Biomet Sports Medicine, Llc Knotless soft tissue devices and techniques
US10136886B2 (en) 2013-12-20 2018-11-27 Biomet Sports Medicine, Llc Knotless soft tissue devices and techniques
US9615822B2 (en) 2014-05-30 2017-04-11 Biomet Sports Medicine, Llc Insertion tools and method for soft anchor
US9700291B2 (en) 2014-06-03 2017-07-11 Biomet Sports Medicine, Llc Capsule retractor
US9545264B2 (en) * 2014-06-06 2017-01-17 Surgiquest, Inc. Trocars and obturators
US9532706B2 (en) 2014-08-07 2017-01-03 Welch Allyn, Inc. Vaginal speculum with illuminator
US10945594B2 (en) 2014-08-07 2021-03-16 Welch Allyn, Inc. Vaginal speculum with illuminator
US11219443B2 (en) 2014-08-22 2022-01-11 Biomet Sports Medicine, Llc Non-sliding soft anchor
US10743856B2 (en) 2014-08-22 2020-08-18 Biomet Sports Medicine, Llc Non-sliding soft anchor
US10039543B2 (en) 2014-08-22 2018-08-07 Biomet Sports Medicine, Llc Non-sliding soft anchor
US10098647B2 (en) 2015-01-13 2018-10-16 Eca Medical Instruments Trocar device with detachable handle and associated methods
US9955980B2 (en) 2015-02-24 2018-05-01 Biomet Sports Medicine, Llc Anatomic soft tissue repair
US10912551B2 (en) 2015-03-31 2021-02-09 Biomet Sports Medicine, Llc Suture anchor with soft anchor of electrospun fibers
US20190223903A1 (en) * 2016-06-10 2019-07-25 Fresenius Kabi Deutschland Gmbh Cannulation device
US10945760B2 (en) * 2016-06-10 2021-03-16 Fresenius Kabi Deutschland Gmbh Cannulation device
US11612401B2 (en) 2016-11-23 2023-03-28 Eca Medical Instruments Orbital trocar device with detachable handle and associated methods
US11484324B2 (en) 2016-11-23 2022-11-01 Eca Medical Instruments Orbital trocar hole carving device with detachable handle and associated methods
WO2018098086A1 (en) * 2016-11-23 2018-05-31 Eca Medical Instruments Orbital trocar device with detachable handle and associated methods
WO2022251203A1 (en) * 2021-05-25 2022-12-01 Sackett Samuel Gregory Safety trocar assembly

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US6238407B1 (en) 2001-05-29
WO1995007053A1 (en) 1995-03-16
US5697947A (en) 1997-12-16
US6099544A (en) 2000-08-08
AU7727194A (en) 1995-03-27

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