TELESCOPING DEVICE WITH SALINE IRRIGATION LINE
An electrosurgical device includes a first shaft defining a proximal end, a distal end, and a lumen therethrough. A fluid delivery tube is disposed within the lumen, the fluid delivery tube defining a proximal end a distal end. An electrically conductive treatment element is in electrical communication with and coupled to the distal end of the first shaft, the electrically conductive treatment element includes a conductive fluid conduit in fluid communication with and affixed within a portion of the fluid delivery tube. A second shaft is in electrical communication with the first shaft, the first shaft being slideably disposed within the second shaft and movable from a first position in which the electrically conductive treatment element is proximate to the distal end of the second shaft to a second position in which the electrically conductive treatment element is advanced a distance away from the distal end of the second shaft.
This application is a continuation of U.S. Utility patent application Ser. No. 14/688,723, filed Apr. 16, 2015, entitled TELESCOPING DEVICE WITH SALINE IRRIGATION LINE, which is related to and claims priority to U.S. Provisional Patent Application Ser. No. 62/073,705, filed Oct. 31, 2014, entitled COMBINATION PEAK PLASMA AND TRANSCOLLATION TIP, the entirety of which is incorporated herein by reference.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENTn/a
FIELD OF THE INVENTIONThe present invention relates to electrosurgical devices, and more particularly, a telescoping electrosurgical device and system with irrigation.
BACKGROUND OF THE INVENTIONElectrosurgical devices are electrically powered medical devices configured to cut, coagulate, desiccate, or fulgurate tissue. Such devices typically employ radiofrequency electrical current to heat the target tissue region to effectuate a desired result. One such electrosurgical device uses an electrode to deliver monopolar radiofrequency current to the target tissue to cut and coagulate the tissue to reduce blood and to seal the surgical site.
Both cutting and coagulation modalities transfer a substantial amount of heat to the target tissue, which may result in smoke, tissue charring, the electrode sticking to the tissue, and collateral tissue being destroyed, which may increase surgical times and delay patient healing. Thus, coagulating tissue with a conductive fluid, such as saline, has been devised to rapidly seal tissue during surgery while minimizing charring, smoke, and sticking associated with sealing tissue. However, such surgical devices that provide for the sealing of tissue with saline, do not also cut tissue and a second electrosurgical device is needed to cut the tissue. This is so because the cutting of tissue typically employs a narrow blade delivering radiofrequency energy operating on a long duty cycle, while the coagulation of tissue with saline typically employs a large area electrode operating on a short duty cycle.
Moreover, while telescoping electrosurgical device exists to provide the surgeon with better reach and maneuverability when accessing tissue to be treated, such devices do not provide the ability to irrigate tissue with a fluid during the electrosurgical treatment. The difficulty in providing fluid lies in the fact that extending and retracting the shaft portion of the device may cause compression of the fluid delivery tube, which may result in kinking, leaks, or other malfunctions that prevent integrated irrigation from being utilizes in such electrosurgical devices.
SUMMARY OF THE INVENTIONThe present invention advantageously provides for an electrosurgical device, comprising a first shaft defining a proximal end, a distal end, and a lumen there through. A fluid delivery tube is disposed within the lumen, the fluid delivery tube defining a proximal end a distal end. The proximal end of the fluid delivery tube is affixed to the proximal end of the first shaft. An electrically conductive treatment element is in electrical communication with and coupled to the distal end of the first shaft, the electrically conductive treatment element includes a conductive fluid conduit in fluid communication with and affixed within a portion of the fluid delivery tube. A second shaft is in electrical communication with the first shaft, the first shaft being slideably disposed within the second shaft and movable from a first position in which the electrically conductive treatment element is proximate to the distal end of the second shaft to a second position in which the electrically conductive treatment element is advanced a distance away from the distal end of the second shaft.
In another embodiment, an electrosurgical system includes a first shaft defining a proximal end, a distal end, and a lumen there through. A fluid delivery tube is disposed within the lumen, the fluid delivery tube defining a proximal end a distal end. The proximal end of the fluid delivery tube is affixed to the proximal end of the first shaft. An electrically conductive treatment element in electrical communication with and coupled to the distal end of the first shaft is included, the electrically conductive treatment element includes a conductive fluid conduit in fluid communication with and affixed within a portion of the fluid delivery tube. A handle is included, the first shaft being slideably disposed within the handle, the fluid delivery tube maintaining fluid communication with the conductive fluid conduit when the first shaft slides within the handle. A radiofrequency generator in electrical communication with the electrically conductive treatment element is included, the radiofrequency generator including a pump in fluid communication with fluid source, the pump being in fluid communication with the fluid delivery tube. A vacuum source in fluid communication with the lumen may optionally be included, the vacuum source being configured to aspirate fluid expelled from the conductive fluid conduit.
In yet another embodiment, the electrosurgical device includes a conductive first shaft defining a proximal end, a distal end, and a lumen there through. A fluid delivery tube disposed within the lumen is included, the fluid delivery tube defining a proximal end a distal end. The proximal end of the fluid delivery tube is affixed to the proximal end of the first shaft. An electrically conductive treatment element in electrical communication with and coupled to the distal end of the first shaft is included, the electrically conductive treatment element includes a conductive fluid conduit in fluid communication with and affixed within a portion of the fluid delivery tube, the conductive fluid conduit in electrical communication with the first shaft; an electrode defining a sharp, the electrode being configured to cut tissue with radiofrequency energy; and a port disposed distal to the distal end of the conductive fluid conduit, the port configured to expel conductive fluid from the conductive fluid conduit, the electrode surrounding at least a portion of the port. A second shaft in electrical communication with the first shaft is included, the first shaft being slideably disposed within the second shaft and movable from a first position in which the electrically conductive treatment element is proximate to the distal end of the second shaft to a second position in which the electrically conductive treatment element is advanced a distance away from the distal end of the second shaft while fluid communication is maintained between the fluid delivery tube and the conductive fluid conduit. A handle is included, the proximal ends of the first shaft and the second shaft being disposed within the handle.
A more complete understanding of the present invention, and the attendant advantages and features thereof, will be more readily understood by reference to the following detailed description when considered in conjunction with the accompanying drawings wherein:
As used here, relational terms, such as “first” and “second,” “top” and “bottom,” “front and rear,” and the like, may be used solely to distinguish one entity or element from another entity or element without necessarily requiring or implying any physical or logical relationship or order between such entities or elements.
Now referring to the drawings in which like reference designators refer to like elements, there is shown in
The first shaft 12 may define a lumen 18 there through sized to receive a non-conductive fluid delivery tube 20 for transporting a conductive fluid, for example saline, to a target treatment region. In one embodiment, the fluid delivery tube 20 extends within the lumen 18 from the proximal end 14 to the distal end 16 and is co-axial with the first shaft 12. The proximal end 14 of the first shaft 12 is movably and telescopingly coupled to a handle 22 as discussed in more detail below. The handle 22 may include features for activating the various treatment modalities of the device 10 discussed in more detail below. The distal end 16 may include a treatment element 24 extending therefrom configured to deliver at least one of: monopolar energy configured to generate plasma and resect tissue in the target tissue region, referred to herein as CUT mode; monopolar energy configured to coagulated the target tissue region, referred to herein as COAG mode; and monopolar energy combined with saline delivery configured to provide hemostasis to the target tissue region and surrounding tissue, referred to herein as transcollation, or TRANS mode.
The treatment element 24 may include an electrode 26 in electrical communication with a radiofrequency generator 28 configured to transmit radiofrequency energy at a predetermined voltage, frequency, and duty cycle determined by the generator 28 through the target tissue region and toward a patient return electrode (not shown) positioned on or proximate to the patient. For example, the patient return electrode, or ground electrode, may be positioned on the skin of the patient during a procedure such that current may flow from the electrode 26 to the patient return electrode. Generators, pumps and electrical signals suitable for use with the present invention include those described in U.S. Pat. Nos. 7,959,626 and 9,018,983 and Published U.S. Pat. Application Nos. 2006-0149225, 2008-0015562, 2011-0178515 and 2014-0002142, the entire contents of each of which are herein incorporated by reference.
The treatment element 24 may further be in fluid communication with a conductive fluid source, such as saline, either disposed within the generator 28 or independent of and remote from the generator, and whose flow initiation, rate, and termination is controlled by the generator 28 in communication with a pump. In one configuration, the treatment element 24 is welded or otherwise permanently affixed to the distal end 16 of the first shaft 12 to create an electrical connection between the first shaft 12 and the treatment element 24. In other configurations, the treatment element 24 may be modular such that it is releasably affixable to the distal end 16 of the first shaft 12. In particular, treatment elements 24 of various sizes and configurations may be engageable with the distal end 16 of the first shaft 12, for example, through a mechanical interference fit, bayonetted connection, friction fit, and the like. The treatment element 24 may include a necked portion 30 sized engage or otherwise be received and welded within or to the first shaft 12, such that the treatment element 24 may be in fluid communication with the fluid deliver tube 20 and the fluid source, and such that an electrical connection is created between the necked portion 30 and the first shaft 12. In particular, extending proximally from the necked portion 30 is a conductive hypotube 32 fit within the lumen of the fluid delivery tube 20. The hypotube 32 may define a smaller diameter to that of the fluid delivery tube 20 and be composed of, for example, stainless steel. The hypotube 32 may be in electrical communication with the first shaft 12 such that fluid exited the flow delivery tube 20 into the hypotube 32 may be energized by radiofrequency energy transmitted by the generator 28.
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Disposed between the inner diameter of the second shaft 54 and the outer diameter of the first shaft 12 may be an electrically conductive sliding element 58. The sliding element 58 may be circumferentially disposed about and affixed to the outer diameter of the first shaft 12. The sliding element 58 is configured to allow the extension and retraction of the first shaft 12 within the second shaft 54. The sliding element 58 may be composed of a flexible metal or metal alloy, for example, beryllium copper and may conduct a radiofrequency signal from the second shaft 54 through the sliding element 58 to the first shaft 12 where it is further conducted to the treatment element 24.
Affixed to proximal to the distal end of the first shaft 12 may be a gripping element 60. The gripping element 60 is configured such that a user can pinch the gripping element 60 and push or pull on the gripping element 60 to retract or extend to the first shaft 12, respectively. The gripping element 60 may be affixed along any portion of the first shaft 12 and may composed of any electrically insulating material. In an exemplary configuration, the gripping element 60 is disposed on opposite sides of the first shaft 12 and conforms to the users thumb and index fingers.
In an exemplary configuration, the sliding element 58 maintains electrical contact with second shaft 54 as it slides within the second shaft 54. In particular, when the device 10 is in a fully retracted position (
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It will be appreciated by persons skilled in the art that the present invention is not limited to what has been particularly shown and described herein above. In addition, unless mention was made above to the contrary, it should be noted that all of the accompanying drawings are not to scale. A variety of modifications and variations are possible in light of the above teachings without departing from the scope and spirit of the invention, which is limited only by the following claims.
Claims
1. An electrosurgical device, comprising:
- a first shaft defining a proximal end, a distal end, and a lumen there through;
- a glass coated electrically conductive treatment element in electrical communication with and coupled to the distal end of the first shaft;
- a second shaft in electrical communication with the first shaft, the first shaft being slideably disposed within the second shaft and movable from a first position in which the electrically conductive treatment element is proximate to the distal end of the second shaft to a second position in which the electrically conductive treatment element is advanced a distance away from the distal end of the second shaft, the second shaft including a conductor configured to conduct radiofrequency energy from a radiofrequency energy source; and
- a handle, the respective proximal ends of the first shaft and the second shaft being disposed within the handle.
2. An electrosurgical device, comprising:
- a first shaft defining a proximal end, a distal end, and a lumen there through;
- a glass coated and sharp electrically conductive treatment element in electrical communication with and coupled to the distal end of the first shaft;
- a second shaft in electrical communication with the first shaft, the first shaft being slideably disposed within the second shaft and movable from a first position in which the electrically conductive treatment element is proximate to the distal end of the second shaft to a second position in which the electrically conductive treatment element is advanced a distance away from the distal end of the second shaft, the second shaft including a conductor configured to conduct radiofrequency energy from a radiofrequency energy source; and
- a handle, the respective proximal ends of the first shaft and the second shaft being disposed within the handle.
Type: Application
Filed: Mar 29, 2018
Publication Date: Aug 9, 2018
Inventors: Joseph SYLVESTER (Andover, MA), Himanshu K. BHATT (Keller, TX), Tarquinio A. BRUNO (Hampton, NH), Bhavesh D. PATEL (Woburn, MA)
Application Number: 15/939,967