Patent application number | Description | Published |
20080266203 | Cooled helical antenna for microwave ablation - A microwave antenna assembly including an elongated cooling jacket having proximal and distal ends and an inner lumen defined therebetween and a helical microwave antenna member disposed within at least a portion of the elongated cooling jacket and having an inner and outer conductor, the inner conductor disposed within the outer conductor, wherein at least a portion of the inner conductor extends distally from the outer conductor and forms at least one loop; and wherein the inner conductor is configured to deliver microwave energy. | 10-30-2008 |
20080294162 | Energy delivery conduits for use with electrosugical devices - A conduit assembly for transmitting energy between an electrosurgical energy generator and an energy delivering device comprises a first cable sub-assembly including a cable having a flexibility and an energy attenuation; a second cable sub-assembly including a cable having a flexibility and an energy attenuation; wherein the flexibility of the cable of the first cable sub-assembly is less than the flexibility of the cable of the second cable sub-assembly; and wherein the energy attenuation of the cable of the first cable sub-assembly is less than the energy attenuation of the cable of the second cable sub-assembly. | 11-27-2008 |
20080319434 | Reflective power monitoring for microwave applications - A system and method for supplying microwave energy to tissue for microwave therapy includes an electrosurgical generator having an output for coupling to a surgical instrument. The electrosurgical generator includes a microwave energy source and a controller for controlling the operation of the electrosurgical generator. The surgical instrument, coupled to the electrosurgical generator, includes a microwave antenna for delivering microwave energy from the microwave energy source. The controller of the electrosurgical generator is operable for causing the electrosurgical generator to apply at least two pulses of microwave energy. | 12-25-2008 |
20090326620 | Deployable Microwave Antenna for Treating Tissue - A microwave ablation system for treating tissue includes an assembly of antennas adapted to connect to a microwave generator. The microwave generator generates microwave energy. Each antenna of the assembly of antennas includes inner and outer conductors. The inner conductor has a length. The outer conductor has a longitudinal axis defined along a length thereof. The outer conductor at least partially surrounding the inner conductor at least partially along the length thereof. One of the inner conductor and the outer conductor is movable with respect to the other. At least one antenna of the assembly of antennas is deployable from a first state for ablating a first ablation region of tissue to a second deployable state for ablating a second ablation region of tissue. The first and second ablation tissue regions overlap to define an aggregate ablation region. | 12-31-2009 |
20100045558 | Dual-Band Dipole Microwave Ablation Antenna - A triaxial microwave antenna assembly is disclosed. The triaxial microwave antenna includes a feedline having an inner conductor, a central conductor disposed about the inner conductor and an outer conductor disposed about the central conductor and a radiating portion including a high frequency radiating section and a low frequency radiating section. | 02-25-2010 |
20100045559 | Dual-Band Dipole Microwave Ablation Antenna - A microwave antenna assembly is disclosed. The microwave antenna assembly includes a feedline having an inner conductor, an outer conductor and an inner insulator disposed therebetween and a radiating portion including a dipole antenna having an operative length and an inductor. The inductor is adapted to adjust the operative length of the dipole antenna based on the frequency of the microwave energy supplied to the dipole antenna. | 02-25-2010 |
20100094272 | Antenna Assemblies for Medical Applications - A device for directing energy to a target volume of tissue includes a helical antenna assembly that includes a helical antenna radiating section having a helical antenna element. The helical antenna assembly is capable of operating in at least one of a first mode of operation for directing energy to a first portion of the target volume of tissue and a second mode of operation for directing energy to a second portion of the target volume of tissue. | 04-15-2010 |
20100094273 | Antenna Assemblies for Medical Applications - A device for directing energy to a target volume of tissue includes a monopole antenna assembly that includes a monopole antenna radiating section having a monopole antenna element surrounded by a dielectric material. The monopole antenna assembly also includes a ground plane disposed at a proximal end of the monopole antenna radiating section, wherein the ground plane is configured to direct energy into the target volume of tissue. | 04-15-2010 |
20100217251 | Leaky-Wave Antennas for Medical Applications - A device for directing energy to a target volume of tissue includes an inner conductor having a length and an outer conductor coaxially surrounding the inner conductor along the length. The outer conductor has a proximal portion and a distal portion. The distal portion of the outer conductor is provided with a number of apertures N defined therein for radiating energy, where N is an integer greater than 1, each aperture having a size and extending at an angle relative to a longitudinal axis of the outer conductor. At least one of the size and the angle of each aperture is varied in relation to the other apertures N−1 such that the energy radiated along the distal portion is substantially uniform. | 08-26-2010 |
20100217252 | Leaky-Wave Antennas for Medical Applications - A device for directing energy to a target volume of tissue includes a proximal portion including a first antenna subassembly extending therethrough, and a distal portion including a second antenna subassembly. The first antenna subassembly includes a leaky-wave antenna assembly having an outer conductor and an inner conductor disposed within the outer conductor. The distal portion of the device is attached to the inner conductor. The outer conductor includes a plurality of radiating apertures defined in a distal portion thereof and is configured for radiating energy substantially uniformly along a longitudinal axis of the proximal portion. | 08-26-2010 |
20100249769 | Apparatus for Tissue Sealing - The present disclosure provides for a microwave forceps for sealing tissue. The forceps includes a shaft member having an end effector assembly disposed at a distal end thereof. The end effector assembly includes opposing jaw members movable from a first position in spaced relation relative to one another to at least one subsequent position wherein the jaw members cooperate to grasp tissue therebetween. Each of the jaw members includes a sealing surface, wherein one of the sealing surfaces includes one or more microwave antennas coupled to a source of microwave energy. | 09-30-2010 |
20100305561 | Electrosurgical Devices with Directional Radiation Pattern - A device for directing energy to a target volume of tissue includes an antenna assembly and an elongated body member. The elongated body member includes a proximal end portion and a distal end portion, wherein the proximal and distal end portions define a longitudinal axis. The elongated body member has a chamber defined therein that extends along the longitudinal axis, and a body wall surrounding the chamber. An antenna assembly is disposed in the chamber. The elongated body member also includes an opening in the body wall to allow energy radiated from the antenna assembly to transfer into the target volume of tissue. | 12-02-2010 |
20100331834 | Ablation Probe Fixation - An ablation probe fixation apparatus for securing an ablation probe to tissue is disclosed. The ablation probe fixation apparatus includes a base having a top surface and a skin-contacting bottom surface, wherein the base includes an adhesive layer disposed on the skin-contacting bottom surface. The fixation apparatus also includes a fixation member coupled to the top surface of the base. The base and the fixation member include an aperture defined therein for insertion of the ablation probe therethrough. | 12-30-2010 |
20110071512 | Tissue Ablation System with Energy Distribution - A microwave ablation system includes an energy source adapted to generate microwave energy and a power splitting device having an input adapted to connect to the energy source and a plurality of outputs. The plurality of outputs are configured to be coupled to a corresponding plurality of energy delivery devices. The power splitting device is configured to selectively divide energy provided from the energy source between the plurality of energy devices. | 03-24-2011 |
20110077632 | Feedpoint Optimization for Microwave Ablation Dipole Antenna With Integrated Tip - A microwave ablation system includes a generator operable to output energy and an antenna coupled to the generator via a coaxial cable. The antenna delivers energy to tissue and includes a proximal radiating section and a distal radiating section. The antenna also includes a feedpoint section defined by the portion of the distal radiating section that underlaps the proximal radiating section. | 03-31-2011 |
20110196362 | Electrosurgical Devices With Choke Shorted to Biological Tissue - A device for directing energy to tissue includes a feedline and a radiating portion electrically coupled to the feedline. The radiating portion includes a distal radiating section and a proximal radiating section. The feedline includes an inner conductor, an outer conductor and a first dielectric material disposed therebetween. The device also includes a choke disposed around at least a portion of the feedline. The choke includes a second dielectric material disposed around at least a portion of the outer conductor, wherein the second dielectric material includes at least one opening defined therein, and an electrically-conductive member disposed in the at least one opening electrically coupled to the outer conductor, wherein the electrically-conductive member is configured to contact tissue. | 08-11-2011 |
20110213353 | Tissue Ablation System With Internal And External Radiation Sources - According to one embodiment of the present disclosure a microwave ablation system is disclosed. The microwave ablation system includes an energy source adapted to generate microwave energy and a plurality of energy delivery devices having a first energy delivery device configured to be inserted into tissue and to generate a non-directional ablation volume and a second energy delivery device configured to be positioned relative to the tissue and to generate a directional ablation volume. The system also includes a power dividing device having an input adapted to connect to the energy source and a plurality of outputs configured to be coupled to the plurality of energy delivery devices. The power dividing device is configured to selectively divide energy provided from the energy source between the plurality of energy delivery devices. | 09-01-2011 |
20110218527 | Microwave Antenna Probe Having a Deployable Ground Plane - A surgical ablation system employing an ablation probe having a deployable ground plane is disclosed. The disclosed system includes a source of ablation energy and a source of electrosurgical energy, and a switching assembly configured to select between ablation and electrosurgical modes. The probe includes a cannula having a shaft slidably disposed therein. The shaft includes a deployable ground plane electrode assembly and a needle electrode disposed at distal end of the shaft. As the shaft is extended distally from the cannula, the ground plane electrode unfolds, and the needle electrode is exposed. Electrosurgical energy is applied to tissue via the needle electrode to facilitate the insertion thereof into tissue. Ablation energy is applied to tissue via the needle electrode to achieve the desired surgical outcome. The shaft, ground plane electrode and needle electrode are retracted into the cannula, and withdrawn from the surgical site. | 09-08-2011 |
20110238054 | Ablation Devices with Adjustable Radiating Section Lengths, Electrosurgical Systems Including Same, and Methods of Adjusting Ablation Fields Using Same - An energy applicator for directing energy to tissue includes a feedline and a radiating section operably coupled to the feedline, wherein the radiating section has a length. The energy applicator also includes a length adjustment member adapted to allow for selective adjustment of the length of the radiating section. | 09-29-2011 |
20110238055 | Ablation Devices with Adjustable Radiating Section Lengths, Electrosurgical Systems Including Same, and Methods of Adjusting Ablation Fields Using Same - An energy applicator for directing energy to tissue includes a feedline and a radiating section operably coupled to the feed line, wherein the radiating section has a length. The energy applicator also includes a length adjustment member adapted to allow for selective adjustment of the length of the radiating section. The length adjustment member includes a first pivot element and a first tensioning element coupled to the first pivot element. | 09-29-2011 |
20110295246 | System and Method for Chemically Cooling an Ablation Antenna - A method of performing an ablation procedure includes the steps of inserting an antenna assembly into tissue and supplying energy thereto for application to tissue. The method also includes the step of causing contact between a first material and at least one other material disposed within the antenna assembly to thermally regulate the antenna assembly. According to another embodiment, an ablation system includes an energy delivery assembly. A first chamber is defined within the energy delivery assembly and is configured to hold a first chemical. Another chamber is defined within the energy delivery assembly and is configured to hold at least one other chemical. The first chamber and the other chamber are configured to selectively and fluidly communicate with each other to cause contact between the first chemical and the at least one other chemical to cause an endothermic reaction and/or an exothermic reaction. | 12-01-2011 |
20110319880 | Microwave Ground Plane Antenna Probe - An ablation probe having a ground plane is disclosed. The disclosed probe includes an inner conductor coaxially disposed within an outer shield. One or more ground plane(s) oriented substantially transversely to a longitudinal axis of the probe are joined to the outer shield. One or more dielectric(s) may be disposed around the inner conductor or upon a surface of a ground plane. The probe may include a rigid or flexible catheter disposed around the outer shield to define a conduit therebetween to enable the delivery of pressurized fluid to an inflatable balloon disposed around a ground plane. A semicylindrical housing having a circumferential surface and a distal surface may be included. A proximal edge of the circumferential surface of the semicylindrical housing may be joined to a circumferential edge of a ground plane. An opening may be defined in the distal surface of the semicylindrical housing, through which the inner conductor may extend distally. | 12-29-2011 |
20120029501 | High-Strength Microwave Antenna Assemblies - Various high-strength microwave antenna assemblies are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. The antenna is a dipole antenna with the distal end of the radiating portion being tapered and terminating at a tip to allow for direct insertion into tissue. Antenna rigidity comes from placing distal and proximal radiating portions in a pre-stressed state, assembling them via threaded or overlapping joints, or fixedly attaching an inner conductor to the distal portion. The inner conductor is affixed to the distal portion by, e.g., welding, brazing, soldering, or by adhesives. A junction member made from a hard dielectric material, e.g., ceramic, can be placed between the two portions and can have uniform or non-uniform shapes to accommodate varying antenna designs. Electrical chokes may also be used to contain returning currents to the distal end of the antenna. | 02-02-2012 |
20120259328 | Leaky-Wave Antennas for Medical Applications - A device for directing energy to a target volume of tissue includes a proximal portion including a first antenna assembly extending therethrough, and a distal portion including a second antenna assembly. The first antenna assembly includes a leaky-wave antenna assembly having an outer conductor and an inner conductor disposed within the outer conductor. The distal portion of the device is attached to the inner conductor. The outer conductor includes a plurality of radiating apertures defined in a distal portion thereof and is configured for radiating energy substantially uniformly along a longitudinal axis of the proximal portion. | 10-11-2012 |
20120277738 | LEAKY-WAVE ANTENNAS FOR MEDICAL APPLICATIONS - A device for directing energy to a target volume of tissue includes an inner conductor having a length and an outer conductor coaxially surrounding the inner conductor along the length. The outer conductor has a proximal portion and a distal portion. The distal portion of the outer conductor is provided with a number of apertures N defined therein for radiating energy, where N is an integer greater than 1, each aperture having a size and extending at an angle relative to a longitudinal axis of the outer conductor. At least one of the size and the angle of each aperture is varied in relation to the other apertures N−1 such that the energy radiated along the distal portion is substantially uniform. | 11-01-2012 |
20120303014 | ELECTROSURGICAL DEVICES WITH DIRECTIONAL RADIATION PATTERN - A device for directing energy to a target volume of tissue includes an antenna assembly and an elongated body member. The elongated body member includes a proximal end portion and a distal end portion, wherein the proximal and distal end portions define a longitudinal axis. The elongated body member has a chamber defined therein that extends along the longitudinal axis, and a body wall surrounding | 11-29-2012 |
20130126207 | ENERGY DELIVERY CONDUITS FOR USE WITH ELECTROSURGICAL DEVICES - A conduit assembly for transmitting energy between an electrosurgical energy generator and an energy delivering device comprises a first cable sub-assembly including a cable having a flexibility and an energy attenuation; a second cable sub-assembly including a cable having a flexibility and an energy attenuation; wherein the flexibility of the cable of the first cable sub-assembly is less than the flexibility of the cable of the second cable sub-assembly; and wherein the energy attenuation of the cable of the first cable sub-assembly is less than the energy attenuation of the cable of the second cable sub-assembly. | 05-23-2013 |
20130178843 | System and Method For Treating Tissue Using An Expandable Antenna - A method of repairing an inner vessel wall includes the step of inserting at least a portion of a microwave ablation device into a vessel. The microwave ablation device includes an inner conductor disposed within an outer conductor and defines a longitudinal axis. The method also includes the steps of inserting a repairing sealant into the vessel such that the repairing sealant is disposed between an inner vessel wall and the outer conductor and expanding at least a portion of the outer conductor relative to the longitudinal axis to force at least a portion of the repairing sealant into the inner vessel wall. The method also includes the step of delivering energy to at least one of the inner conductor and the outer conductor to activate the repairing sealant to repair the inner vessel wall. | 07-11-2013 |
20130178844 | System and Method For Treating Tissue Using An Expandable Antenna - An ablation device includes an antenna assembly having a radiating portion configured to deliver energy from a power source to tissue of a patient. The radiating portion has an outer conductor and an inner conductor extending therethrough. The inner conductor is disposed within the outer conductor and defines a longitudinal axis. One of the inner conductor and the outer conductor is movable relative to the other to cause at least a portion of the outer conductor to expand radially relative to the longitudinal axis. | 07-11-2013 |
20130178846 | MICROWAVE ANTENNA HAVING A CURVED CONFIGURATION - A microwave antenna having a curved configuration is described herein. The antenna portion is formed into various shapes whereby the antenna substantially encloses, by a partial or complete loop or enclosure, at least a majority of the tissue to be irradiated. When microwave energy is delivered through the antenna, the curved configuration forms an ablation field or region defined by the curved antenna and any tissue enclosed within the ablation region becomes irradiated by the microwave energy. The microwave antenna is deployed through one of several methods, and multiple curved antennas can be used in conjunction with one another. Moreover, RF energy can also be used at the distal tip of the antenna to provide a cutting tip for the antenna during deployment in tissue. | 07-11-2013 |
20130231653 | ABLATION DEVICES WITH ADJUSTABLE RADIATING SECTION LENGTHS, ELECTROSURGICAL SYSTEMS INCLUDING SAME, AND METHODS OF ADJUSTING ABLATION FIELDS USING SAME - An energy applicator for directing energy to tissue includes a feedline and a radiating section operably coupled to the feedline, wherein the radiating section has a length. The energy applicator also includes a length adjustment member adapted to allow for selective adjustment of the length of the radiating section. | 09-05-2013 |
20130253500 | TISSUE ABLATION SYSTEM WITH INTERNAL AND EXTERNAL RADIATION SOURCES - According to one embodiment of the present disclosure a microwave ablation system is disclosed. The microwave ablation system includes an energy source adapted to generate microwave energy and a plurality of energy delivery devices having a first energy delivery device configured to be inserted into tissue and to generate a non-directional ablation volume and a second energy delivery device configured to be positioned relative to the tissue and to generate a directional ablation volume. The system also includes a power dividing device having an input adapted to connect to the energy source and a plurality of outputs configured to be coupled to the plurality of energy delivery devices. The power dividing device is configured to selectively divide energy provided from the energy source between the plurality of energy delivery devices. | 09-26-2013 |
20130304057 | ELECTROSURGICAL DEVICES WITH CHOKE SHORTED TO BIOLOGICAL TISSUE - A device for directing energy to tissue includes a feedline and a radiating portion electrically coupled to the feedline. The radiating portion includes a distal radiating section and a proximal radiating section. The feedline includes an inner conductor, an outer conductor and a first dielectric material disposed therebetween. The device also includes a choke disposed around at least a portion of the feedline. The choke includes a second dielectric material disposed around at least a portion of the outer conductor, wherein the second dielectric material includes at least one opening defined therein, and an electrically-conductive member disposed in the at least one opening electrically coupled to the outer conductor, wherein the electrically-conductive member is configured to contact tissue. | 11-14-2013 |
20130324910 | ABLATION DEVICE WITH DRUG DELIVERY COMPONENT AND BIOPSY TISSUE-SAMPLING COMPONENT - An ablation device includes a handle assembly, an ablation electrode extending from the handle assembly, and one or more delivery needles extending from the handle assembly. The ablation electrode includes an ablation needle. The ablation needle includes a distal end portion including a drug delivery port defined therethrough. The ablation device also includes and a biopsy tool extending from the handle assembly. | 12-05-2013 |
20130324911 | ABLATION DEVICE WITH DRUG DELIVERY COMPONENT - An ablation system includes a source of electrosurgical energy, a source of coolant fluid, and an ablation electrode assembly operatively connected to the source of electrosurgical energy and fluidly-coupled to the source of coolant fluid. The ablation electrode assembly includes a hub defining a chamber therein and one or more electrically-conductive ablation needles extending from the hub. The ablation system also includes one or more delivery needles extending from the hub. The one or more delivery needles are selectively moveable from a first position, wherein the distal end of the delivery needle is disposed proximal to the distal end portion of the ablation needle, to at least a second position, wherein at least the distal end of the delivery needle is disposed distally beyond the distal end portion of the ablation needle. | 12-05-2013 |
20140128862 | ENERGY DELIVERY CONDUITS FOR USE WITH ELECTROSURGICAL DEVICES - A conduit assembly for transmitting energy between an electrosurgical energy generator and an energy delivering device comprises a first cable sub-assembly including a cable having a flexibility and an energy attenuation; a second cable sub-assembly including a cable having a flexibility and an energy attenuation; wherein the flexibility of the cable of the first cable sub-assembly is less than the flexibility of the cable of the second cable sub-assembly; and wherein the energy attenuation of the cable of the first cable sub-assembly is less than the energy attenuation of the cable of the second cable sub-assembly. | 05-08-2014 |
20140155881 | HIGH-STRENGTH MICROWAVE ANTENNA ASSEMBLIES - Various high-strength microwave antenna assemblies are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. The antenna is a dipole antenna with the distal end of the radiating portion being tapered and terminating at a tip to allow for direct insertion into tissue. Antenna rigidity comes from placing distal and proximal radiating portions in a pre-stressed state, assembling them via threaded or overlapping joints, or fixedly attaching an inner conductor to the distal portion. The inner conductor is affixed to the distal portion by, e.g., welding, brazing, soldering, or by adhesives. A junction member made from a hard dielectric material, e.g., ceramic, can be placed between the two portions and can have uniform or non-uniform shapes to accommodate varying antenna designs. Electrical chokes may also be used to contain returning currents to the distal end of the antenna. | 06-05-2014 |
20140163545 | SYSTEM AND METHOD FOR CHEMICALLY COOLING AN ABLATION ANTENNA - A method of performing an ablation procedure includes the steps of inserting an antenna assembly into tissue and supplying energy thereto for application to tissue. The method also includes the step of causing contact between a first material and at least one other material disposed within the antenna assembly to thermally regulate the antenna assembly. According to another embodiment, an ablation system includes an energy delivery assembly. A first chamber is defined within the energy delivery assembly and is configured to hold a first chemical. Another chamber is defined within the energy delivery assembly and is configured to hold at least one other chemical. The first chamber and the other chamber are configured to selectively and fluidly communicate with each other to cause contact between the first chemical and the at least one other chemical to cause an endothermic reaction and/or an exothermic reaction. | 06-12-2014 |
20140180270 | LEAKY-WAVE ANTENNAS FOR MEDICAL APPLICATIONS - A device for directing energy to a target volume of tissue includes an inner conductor having a length and an outer conductor coaxially surrounding the inner conductor along the length. The outer conductor has a proximal portion and a distal portion. The distal portion of the outer conductor is provided with a number of apertures N defined therein for radiating energy, where N is an integer greater than 1, each aperture having a size and extending at an angle relative to a longitudinal axis of the outer conductor. At least one of the size and the angle of each aperture is varied in relation to the other apertures N−1 such that the energy radiated along the distal portion is substantially uniform. | 06-26-2014 |
20140214023 | ELECTROSURGICAL DEVICES WITH DIRECTIONAL RADIATION PATTERN - A device for directing energy to a target volume of tissue includes an antenna assembly and an elongated body member. The elongated body member includes a proximal end portion and a distal end portion, wherein the proximal and distal end portions define a longitudinal axis. The elongated body member has a chamber defined therein that extends along the longitudinal axis, and a body wall surrounding the chamber. An antenna assembly is disposed in the chamber. The elongated body member also includes an opening in the body wall to allow energy radiated from the antenna assembly to transfer into the target volume of tissue. | 07-31-2014 |
20140358139 | ELECTROSURGICAL ENERGY CHANNEL SPLITTERS AND SYSTEMS FOR DELIVERING ELECTROSURGICAL ENERGY - An electrosurgical energy channel splitter apparatus includes a channel input a plurality of channel outputs, and a controller. The channel input is configured to receive electrosurgical energy from an electrosurgical energy source. Each channel output is configured to couple to a respective electrosurgical device. The controller is coupled to the channel input and the plurality of channel outputs. The controller is configured to selectively direct the electrosurgical energy from the channel input to one of the plurality of channel outputs. | 12-04-2014 |
20150065944 | DRUG-DELIVERY DEVICE FOR USE WITH ABLATION DEVICE - A drug-delivery device includes a body configured for attachment to a handle of an ablation device, a shaft portion defining a passageway therein, and a delivery lumen to provide for drug delivery to tissue. The body includes a proximal portion, a distal portion, and a contoured portion disposed therebetween. The contoured portion is configured for engagement with a contoured portion of the handle of the ablation device. The shaft portion includes a proximal end and a distal end. The proximal end of the shaft engages with an opening defined in the distal end of the body. The passageway of the shaft portion is configured to receive the delivery lumen slideably moveably therein. The delivery lumen includes a proximal portion and a distal portion. The drug-delivery device also includes a knob member coupled to the proximal portion of the delivery lumen. | 03-05-2015 |
20150065964 | DRUG-DELIVERY CANNULA ASSEMBLY - A drug-delivery cannula assembly includes a cannula housing adapted for receiving at least one obturator shaft of an obturator assembly therethrough, one or more cannulae, and a supply line coupled to the cannula housing. The cannula housing is adapted for receiving one or more obturator shafts of an obturator assembly therethrough. The one or more cannulae define a longitudinal axis and a passageway aligned with the longitudinal axis. The one or more cannulae each include a proximal end coupled to the cannula housing. The cannula housing is configured to fluidly-couple the one or more cannulae to a source of a drug delivery supply for supplying drugs via the supply line to the one or more cannulae. | 03-05-2015 |