1. Technical Field
The present disclosure relates to a surgical instrument, and more particularly, to a mirrored arthroscopic camera for providing better visualization within the joint space.
2. Background of Related Art
Endoscopic surgical procedures are minimally invasive procedures in which operations are carried out within the body by using elongated instruments inserted through small entrance openings in the body. Arthroscopic surgical procedures, a subset of endoscopic surgical procedures, are minimally invasive procedures carried out within the interior of a joint, i.e., the joint space.
Minimally invasive procedures, e.g., arthroscopic procedures, are desirable in that they allow for quicker recovery time and shorter hospital stays as compared to open surgical procedures. Minimally invasive procedures also leave minimal scarring (both internally and externally) and reduce patient discomfort during the recovery period. However, because the interior dimensions of the entrance openings into the body are necessarily small, only elongated, small diametered instrumentation may be used to access the internal joint space.
During an arthroscopic procedure, for example, an arthroscope, an elongated tubular instrument that allows a surgeon to illuminate and view the joint space, is inserted into the interior of the joint through a small incision. As can be appreciated, the maneuverability of the arthroscope is limited by the dimensions of the joint space as well as by the dimensions of the entrance opening into the body. Thus, due to the spatial constraints of arthroscopic procedures, the ability to maneuver the arthroscope within the interior of the joint to illuminate and view the joint space is limited.
In accordance with one embodiment of the present disclosure, a surgical instrument is provided. The surgical instrument includes an elongated tubular member defining a longitudinal axis and having a lumen extending therethrough. A light source is disposed within the elongated tubular member and is positioned at a distal end thereof. The light source is configured to emit light distally from the distal end of the elongated tubular member. A mirror assembly is coupled to an outer surface of the elongated tubular member toward a distal end thereof. The mirror assembly is moveable between a retracted position and an extended position. In the retracted position, the mirror assembly is positioned adjacent the outer surface of the elongated tubular member. In the extended position, the mirror assembly extends distally from the elongated tubular member to re-direct light emitted by the light source.
In one embodiment, the light source is a fiber optic bundle extending through the elongated tubular member. An illuminated distal tip of the fiber optic bundle is configured to emit light distally from the distal end of the elongated tubular member. The fiber optic cables capture and transmit an image from the distal end of the elongated tubular member to a remote video display for displaying the image as a video image.
In another embodiment, the light source is a light emitting diode (LED). In such an embodiment, a camera may be disposed within the elongated tubular member and positioned at the distal end thereof. The camera is configured to capture and transmit an image from the distal end of the elongated tubular member to a remote video display for displaying the image as a video image.
In yet another embodiment, the mirror assembly includes an arm, a base, and a mirror. The arm is fixedly engaged to the base at one end thereof and extends therefrom. The mirror is hingeably engaged to the arm at the other end of the arm such that the mirror may be angled with respect to the arm to re-direct light radially off the longitudinal axis of the elongated tubular member. The mirror may be angled to re-direct light at an angle of about zero degrees to about 90 degrees with respect to the longitudinal axis in each of the distal and proximal directions. Additionally, the mirror of the mirror assembly may define a convex, concave, or substantially flat mirrored surface.
The hinging (or angling) of the mirror with respect to the arm may be either mechanically or electrically controlled. Further, the mirror assembly may be integral with the elongated tubular member, or may be releasably coupled to the elongated tubular member.
In another embodiment, the mirror assembly is longitudinally translatable, e.g., between the retracted and the extended position, along a track disposed on an outer surface of the elongated tubular member. Translation of the mirror assembly between the retracted position and the extended position may be either mechanically or electrically controlled.
In still yet another embodiment, the elongated tubular member is formed from a rigid or a semi-rigid material.
In accordance with another embodiment of the present disclosure, a mirror assembly for attachment to an arthroscopic camera is provided. The mirror assembly includes a base that is releasably engageable with an outer surface of an arthroscopic camera. An arm is fixedly engaged at a first end thereof to the base and is hingeably coupled to a mirror at a second end thereof. The arm is configured to extend beyond the distal end of the arthroscopic camera. The mirror is hingeable with respect to the arm, and thus, with respect to the arthroscopic camera, to re-direct light to/from a distal end of the camera to define a viewing direction of the camera.
In one embodiment, the mirror is hingeable with respect to the arthroscopic camera to define the viewing direction of the camera off a longitudinal axis of camera at an angle of about zero degrees to about 90 degrees with respect to the longitudinal axis in each of the distal and proximal directions.
In yet another embodiment, the arm is moveable between a retracted position and an extended position. In the retracted position, the mirror is positioned adjacent the distal end of the arthroscopic camera. In the extended position, the mirror is extended beyond a distal end of the arthroscopic camera.
In another embodiment, a control wire (or control wires) is coupled to the arm at a first end thereof. The control wire is configured to extend along (or through) the arthroscopic camera to ultimately couple to a control member for remotely controlling the hinging of the mirror with respect to the arm. Translation of the arm from the retracted position to the extended position may also be remotely controlled by the control member (via the control wire). Further, the hinging of the mirror with respect to the arm and/or the extension/retraction of the arm may be electrically or mechanically controlled.
Various embodiments of the subject instrument are described herein with reference to the drawings wherein:
Referring now to
It is envisioned that elongated tubular member 12 be made from a rigid, or semi-rigid material to protect the internal components of arthroscope 10 and to facilitate insertion of arthroscope 10 into a surgical site, e.g., the joint space. It is also envisioned that elongated tubular member 12 and/or mirror assembly 100 be formed form a biocompatible material to reduce the incidence of adverse reaction by a patient upon contact with the patient's tissue.
As shown in
With continued reference to
Mirror 130 includes a mirrored surface 134 and a back surface 136 and is configured such that, when mirror assembly 100 is translated to the extended position, mirrored surface 134 extends distally beyond elongated tubular member 12. As can be appreciated, angling mirror 130 with respect to arm 120 similarly angles mirrored surface 134 of mirror 130 with respect to elongated tubular member 12, re-directing light emitted from distal end 16 of elongated tubular member 12, as will be discussed in greater detail below and as shown in
As shown in
In some embodiments, mirror assembly 100 may be releasably mountable on an arthroscopic camera, e.g., arthroscope 10. In such embodiments, first end 122 of arm 120 may be engaged within and translatable along a track (not shown) extending longitudinally along base 110, as opposed to base 110 translating along track 20 defined within elongated tubular member 12. In operation, the releasable mirror assembly (not shown) functions substantially similarly to fixed, or integrated mirror assembly 100 discussed above, the main difference being that the releasable mirror assembly (not shown) is releasably coupled to an arthroscopic, or endoscopic camera, e.g., arthroscope 10, while mirror assembly 100 is integral with arthroscope 10. Thus, the releasable mirror assembly (not shown) is similarly moveable between a retracted position and an extended position. In the retracted position, first end 122 of arm 120 is disposed at the proximal end of the track defined within base 110 and, correspondingly, arm 120 and mirror 130 are positioned adjacent elongated tubular member 12. In the extended position, wherein first end 122 of arm 120 has been translated to the distal end of the track defined within base 110, at least a portion of arm 120, and thus mirror 130, extends distally from distal end 16 of elongated tubular member 12.
Additionally, in embodiments where the mirror assembly is releasably mountable on arthroscope 10, base 110 may be configured to snap-fit, clip-on, or otherwise releasably engage outer surface 18 of elongated tubular member 12 of arthroscope 10. Further, base 110 may be dimensioned to engage a specific arthroscope, e.g., arthroscope 10, a specific configuration of arthroscope, or, alternatively, may be adjustable to engage arthroscopes of varying diameter and/or configuration.
Similarly as discussed above in relation to integrated mirror assembly 100, the translation, or extension, of the detachable mirror assembly (not explicitly shown) between the retracted position and the extended position may be remotely controlled. Accordingly, an electrical lead, or wire 30′ (
With continued reference to
A transmitting component 50, e.g., a camera, or the fiber optic bundle, is coupled to distal end 16 of elongated tubular member 12 and extends proximally through lumen 14 of elongated tubular member 12. Transmitting component 50 is configured to receive an optical image, e.g., an image of the surgical site, and to transmit the image (schematically indicated by dotted line 52) through the elongated tubular member 12, e.g., within the fiber optic bundle, to a remote, external video display monitor (not shown). Transmitting component 50 may be coupled, at a proximal end of arthroscope 10, to an antenna (not shown) for wirelessly transmitting the image to the video display (not shown), or, alternatively, to a cable (not shown) for wired transmission of the image to the video display (not shown). Thus, in either configuration, the video display (not shown) provides a video image of the illuminated surgical site.
As can be appreciated, light source 40 illuminates the field of view, permitting transmitting component 50 to receive the optical image and transmit the image to the video display (not shown). Thus, the field of view of arthroscope 10 within the body, e.g., within the joint space, is limited to the area illuminated by light source 40. As mentioned above, the light source of arthroscope 10 is configured to direct light 42 from distal end 16 of elongated tubular member 12 distally along longitudinal axis “X.” Therefore, at least initially, the field of view of arthroscope 10, i.e., the image transmitted to the video display, is limited to the illuminated area extending distally and axially from distal end 16 of arthroscope 10, i.e., the area directly in front of distal end 16 of arthroscope 10.
The operation of mirrored arthroscope 10, i.e., arthroscopic camera 10 including integrated mirror assembly 100 or an arthroscopic camera having a releasable mirror assembly disposed thereon, will now be described with reference to
Initially, mirror assembly 100 is disposed in a retracted position (
With mirror assembly 100 of arthroscope 10 in the retracted position, as mentioned above, arthroscope 10 may be inserted through an opening in tissue and into an internal body space, e.g., the joint space. The rigidity of elongated tubular member 12 facilitates the positioning of distal end 16 of arthroscope 10 within the joint space while protecting the internal components, e.g., light source 40 and transmitting component 50, of arthroscope 10.
Once distal end 16 of arthroscope 10 is positioned within the joint space, as shown in
Accordingly, in order to better view the joint space, the mirror assembly 100 may be moved to the extended position to re-direct light 42 emitted from distal end 16 of arthroscope 10. For example, base 110 of mirror assembly 100 may be translated along track 20 from the proximal end 22 (
In the extended position, as shown in
More particularly, a user may angle mirror 130, e.g., via the control member (not shown) and control wire(s) 30, 30′, to more fully view the surgical site, e.g., the joint space. For example, the user may angle mirror 130 at a relatively small angle with respect to longitudinal axis “X,” such that light 40 is re-directed in a distal, but off-axis direction, as shown in
Prior to removal of arthroscope 10 from the joint space, when the procedure is complete, mirror assembly 100 is moved back to the retracted position, e.g., via the control member (not shown). Then, arthroscope 10, having a minimized diameter, may be removed from the opening in tissue.
It is envisioned that mirror assembly 100, along with arthroscope 10, be sterilizable such that arthroscope 10 including integrated mirror assembly 100 may be used repeatedly. On the other hand, in embodiments where mirror assembly 100 is detachable from arthroscope 10, mirror assembly 100 may be disposable. In other words, mirror assembly 100 may be discarded after a single use, and a new mirror assembly 100 may be provided, e.g., clipped onto, arthroscope 10 for each ensuing procedure to be performed.
From the foregoing and with reference to the various figure drawings, those skilled in the art will appreciate that certain modifications can also be made to the present disclosure without departing from the scope of the same. While several embodiments of the disclosure have been shown in the drawings, it is not intended that the disclosure be limited thereto, as it is intended that the disclosure be as broad in scope as the art will allow and that the specification be read likewise. Therefore, the above description should not be construed as limiting, but merely as exemplifications of particular embodiments. Those skilled in the art will envision other modifications within the scope and spirit of the claims appended hereto.
The present application claims the benefit of and priority to U.S. Provisional Application Ser. No. 61/409,574 filed on Nov. 3, 2010, the entire contents of which are incorporated herein by reference.
Number | Date | Country | |
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61409574 | Nov 2010 | US |