Patent Grant
9833246
All of the material in this patent document is subject to copyright protection under the copyright laws of the United States and other countries. The copyright owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in official governmental records but, otherwise, all other copyright rights whatsoever are reserved.
The present invention generally relates to the collection of cut material from a rongeur and, in particular, the collection of bone from a kerrison rongeur.
Rongeurs are surgical instruments for the cutting away of human tissue, and most commonly, cartilage and/or bone. “Kerrison” rongeurs are utilized in spinal surgery to remove bone and to thereby gain access to the spinal canal. rongeurs are well-known within conventional medical knowledge. Patent references disclosing and discussing kerrison rongeurs and their use in surgery include U.S. Pat. Nos. 3,902,498; 5,026,375; 4,722,338; 4,777,940; 4,777,948 and U.S. patent application publication 2003/0216740.
With reference to
In an exemplary use of a kerrison rongeur, a surgeon places the bone to be cut, such as the leading edge of the lamina of a vertebra, within the open portion of the distal end of the rongeur. The surgeon then squeezes the handle of the rongeur, which advances a moveable jaw member of the rongeur through and amputates a portion of bone. A surgeon may wait until the jaw member becomes full of bone, at which time the rongeur must be completely removed from the surgical site and passed to a scrub nurse or assisting technician for bone removal. The removal from the instrument of the cut portion of bone often requires that the scrub nurse or assisting technician use a small rigid hook, or toothed forceps, and often further requires that the physician temporarily relinquish the instrument entirely to make such bone removal possible. Once cleaned, the instrument is returned to the surgeon who, in returning it to the surgical site, must then reorient himself to the task at hand. This sequence must then be repeated over and over again. Moreover, in a typical spinal fusion, this sequence may require as many as 50 to 100 such repetitions.
Alternatively, a surgeon may present the distal end of the rongeur to a scrub nurse or assisting technician after each cut for removal of the bone, thereby avoiding bone build-up within the jaw member of the rongeur. This can be done without the surgeon relinquishing the rongeur and without the surgeon removing his or her attention and focus from the surgical site. Conventionally, the scrub nurse or assisting technician manually swipes the end of the kerrison rongeur with a sterile material for removing the cut bone. The scrub nurse or assisting technician may repeat the swiping of the cut bone multiple times before harvesting the swiped bone from the material used to perform the swiping. A gauze sponge may be used for swiping. Rather than swiping the bone from the rongeur, a gloved hand may be used by the scrub nurse or assisting technician to directly remove the bone from the rongeur. Thereafter, the harvested bone from the patient may be used in the surgical procedure on the patient, e.g., in autografts.
In view of the foregoing, it is believed that a need exists for a safe, expedient, and efficient way for the cut bone to be removed from the kerrison rongeur and harvested by a scrub nurse or assisting technician without the surgeon relinquishing the kerrison rongeur and without the surgeon having to remove attention and focus from the surgical site. This, and other needs, are believed to be addressed by one or more aspects of the present invention.
The present invention includes many aspects and features. Moreover, while many aspects and features relate to, and are described in, the context of collection of bone from a kerrison rongeur, which is preferred, the present invention is not limited to only such use, as will become apparent from the following summaries and detailed descriptions of aspects, features, and one or more embodiments of the present invention.
Accordingly, in one aspect of the present invention, a collector used to collect cut bone comprises: a container body defining an interior containment space for receiving and retaining collected bone, and having at least one open end for access and removal of collected bone from the interior containment space; and a cap in covering relation to the open end of the container body such that access to the interior containment space for removal of collected bone is inhibited. The collector comprises an intake port defining an opening for receiving therein a distal end of a kerrison-type rongeur for collecting cut bone from a cutting area thereof, and the cap comprises at least one scraper for engaging and dislodging cut bone from the cutting area of the distal end of the rongeur when received within the intake port.
In a feature of this aspect, the collector defines a passage through which cut bone dislodged by a scraper from the cutting area of the distal end of the rongeur is received within the interior containment space.
In additional features, the cap comprises a stop by which the extent to which the distal end of the rongeur received within the intake port is limited; and the stop is located at a spacing relative to the intake port such that, upon receipt of the distal end of the rongeur and abutment thereof with the stop, the one or more scrapers when actuated extend over and cover the distal end of the rongeur proximate the cutting area in which cut bone would be found.
In another feature, the container body comprises a stop by which the extent to which the distal end of the rongeur received within the intake port is limited.
In additional features, one or more of which may or may not be mutually exclusive: the collector further comprises a stop by which the extent to which the distal end of the rongeur received within the intake port is limited; the stop comprises a depressible button; the depressible button, when depressed, blocks the passage and inhibits receipt of dislodged bone within the interior containment space; and wherein the depressible button, when not depressed, does not inhibit receipt of dislodged bone within the interior containment space; the stop comprises a wall; the wall blocks the passage and inhibits receipt of dislodged bone within the interior containment space; and the wall includes an opening therein, the wall being movable between a first position in which the opening aligns with the passage and the wall does not inhibit receipt of dislodged bone within the interior containment space, dislodged bone passing through the opening in the wall, and a second position in which the opening is out of alignment with the passage and the wall inhibits receipt of dislodged bone within the interior containment space.
In additional features, one or more of which may or may not be mutually exclusive: the cap is detachable from the container body such that access to the interior space for removal of collected bone retained therein is uninhibited by the cap; the cap is attached to the container body in a frictional fit engagement; the cap is attached to the container body in a thread engagement; and the cap screws onto the container body.
In another feature, a portion of the cap is rotatable relative both to the container body and to another portion of the cap.
In additional features, one or more of which may or may not be mutually exclusive: the cap is movable relative to the container body detachable from the container body such that access to the interior space for removal of collected bone retained therein is uninhibited by the cap; a hinge connects the cap to the container body for movement relative thereto; the collector is disposable; one or more components of the collector are disposable; and one or more components of the collector are designed to be sterilized for reuse with different patients in different procedures.
In another feature, the collector is configured to collect cut bone from a kerrison rongeur.
In another feature, the collector is hand-held and lightweight.
In additional features, one or more of which may or may not be mutually exclusive: the container body comprises a generally elongate body or tube having opposite open-ends, wherein the cap comprises a first end cap covering a first of the opposite open-ends of the container body, and further comprising a second end cap covering a second of the opposite open-ends of the container body; and the first and second end caps are generally cylindrical in shape and are axially-aligned along a longitudinal axis of the collector.
In another feature, the one or more scrapers comprise a single scraper, the only one of which that is included in the collector.
In another feature, the one or more scrapers comprise more than one scraper.
In another feature, one of the one or more scrapers comprises bristles.
In another feature, one of the one or more scrapers comprises a brush.
In another feature, one of the one or more scrapers comprises a protuberance.
In another feature, one of the one or more scrapers comprises a barb.
In another feature, one of the one or more scrapers comprises a finger.
In another feature, one of the one or more scrapers is flexible and resilient, and sufficiently rigid so as to hold form when not engaged by the distal end of the rongeur and deflecting and bending upon abutment by and engagement with the distal end of the rongeur.
In another feature, one of the one or more scrapers is made from metal.
In another feature, one of the one or more scrapers is made from polypropylene.
In another feature, the one or more scrapers extend from an underside of the cap toward the interior containment space.
In another feature, the one or more scrapers not are located within the intake port.
In additional features, one or more of which may or may not be mutually exclusive: the one or more scrapers are located within the intake port; and the intake port is squeezable and springy such that the intake port can be squeezed by hand causing the one or more scrapers to enter to cutting area of a kerrison rongeur received within the intake port for dislodging bone carried therein.
In another feature, the container body comprises an opaque wall portion and a transparent wall portion.
In additional features, one or more of which may or may not be mutually exclusive: the container body comprises a movable panel; the panel is connected by a hinge for pivoting movement; and the panel is removable.
In another feature, the intake port is located in the container body.
In another feature, the intake port is located in a side wall of the container body generally halfway in-between opposite ends of the container body.
In another feature, the intake port is located in the cap.
In another feature, the intake port comprises a large, wide opening in the side of the cap configured to receive the tip of a rongeur of various conventional sizes.
In additional features, one or more of which may or may not be mutually exclusive: the intake port is located on the top of the cap; the top of the cap defines a funnel-shaped surface with the intake opening at the center thereof; the top of the cap defines a flange for catching dislodged bone when the collector is turned sideways and the distal end of the rongeur is received within the intake port; the cap defines a cutout for visual alignment of the collector when receiving the distal end of the rongeur; and the cap comprises a protuberance for visual alignment of the collector when receiving the distal end of the rongeur.
In another feature, the intake port is located on a side of the cap.
In another feature, the intake port includes a hawk bill profile.
In additional features, the intake port defines a scraping tip; and the scraping tip is rigid.
In another feature, the intake port includes an angular profile.
In another feature, the intake port includes a rounded profile.
In additional features, one or more of which may or may not be mutually exclusive: the one or more scrapers are manually movable into a position for engaging and dislodging cut bone from the cutting area of the distal end of the rongeur when received within the intake port; the one or more scrapers comprise at least two opposed scrapers that are manually moved in directions toward one another so as to converge within the cutting area of the distal end of the rongeur when received within the intake port; opposite ends of the collector each includes a depressible portion by which, when depressed, the opposed scrapers are manually moved so as to converge within the cutting area of the distal end of the rongeur when received within the intake port; the depressible portion is spring-biased against depression; the opposed scrapers are rotatable about a longitudinal axis of the container body by manual rotation of the depressible portions of the end caps; and the one or more scrapers comprise a scraper that is manually moved within the cutting area of the distal end of the rongeur when received within the intake port by twisting of the cap on the container body.
In additional features, one or more of which may or may not be mutually exclusive: the cap further comprises a handle; and the handle extends generally downwardly proximate a side of the container body, a distal end of the handle being located closer to an end of the container body opposite the cap.
In additional features, one or more of which may or may not be mutually exclusive: the collector further comprises a suction port for suctioning dislodged bone into receipt within the interior containment space of the container body; the cap defines the suction port; the suction port is located on a side of the cap; the cap further comprises a handle; the suction port is located on the handle; the handle extends generally downwardly proximate a side of the container body, a distal end of the handle being located closer to an end of the container body opposite the cap; and the suction port is located at the distal end of the handle, with an interior passage extending through the handle from the suction port and opens into the interior containment space defined by container body.
In another feature, the collector is configured to be held in a sideways position when used to collect cut bone from a kerrison rongeur.
In yet another feature, the container body includes an interior containment space having a graduated containment volume of thirty cubic centimeters.
In another feature, the collector is configured to be held in a horizontal position when used to collect cut bone from a kerrison rongeur, the cap and the container body being horizontally oriented relative to one another.
In another feature, the collector is configured to be held in an upright position when used to collect cut bone from a kerrison rongeur.
In another feature, the collector is configured to be held in a vertical position when used to collect cut bone from a kerrison rongeur, the cap and the container body being vertically oriented relative to one another with the cap being at a vertical elevation greater than the container body.
In another feature, the container body is box-shaped with generally rectangular sides and wherein the cap comprises rectangular sides.
In another feature, the container body is transparent. Preferably the container body is made from an inert material conventionally used with medical containers for holding human tissue for use in a body. In at least some embodiments, the container body comprises a molded plastic body, and the cap comprises a molded plastic body.
In another aspect, a device for collecting autologous bone fragments comprises a container and a cap. The container comprises a visibly transparent material and may include graduations to indicate volume of collected tissue comprising bone in the container. The cap is attachable to the container by way of threads on both the container and the cap, whereby the cap screws onto the container. Preferably the cap is symmetrical with the exception of an opening that is wide with respect to the diameter of the cap. The opening is configured to allow the passage of the tip of a kerrison rongeur of multiple sizes along with bone and other tissue matter carried on the tip. The cap further comprises a brush disposed on the underside of the cap facing the interior of the container. The brush comprises a plurality of bristles which may comprise individual monofilament bodies. Moreover, the bristles preferably comprise a material that is absorbable by the human body; a bio-absorbable bristle is preferred in the event that a bristle becomes dislodged and mixed with the harvested matter from the tip of the kerrison rongeur, and thereafter is inadvertently inserted into the patient.
In use, the tip of the kerrison rongeur carrying the matter cut from the patient is inserted through the opening of the cap, and the brush is used to dislodge the matter from the kerrison tip whereby the matter falls into the interior space of the container and is thereby collected. Dislodging the matter may be effected by moving the kerrison tip upward away from the container and into the brush in the underside of the cap and/or translating the kerrison tip perpendicularly to the length of the kerrison body. Additional or alternative movements can be used such as, for example, rotating the brush relative to the tip of the kerrison rongeur for dislodging the cut matter from the tip. The kerrison rongeur thereafter is removed for further use. Later when the harvested matter is needed, the cap is unscrewed from the container and the matter, i.e., bone in preferred implementations, is retrieved from the container.
In another aspect, a kit comprises an aforementioned collector and a rongeur, wherein the collector is configured to collect cut bone from the rongeur of the kit.
Another aspect comprises a method of using an aforementioned collector to collect cut bone.
Another aspect comprises a method of using an aforementioned collector to collect cut bone from a rongeur.
Another aspect comprises a method of using an aforementioned collector to collect cut bone from a kerrison rongeur.
In addition to the aforementioned aspects and features of the present invention, it should be noted that the present invention further encompasses the various possible combinations and subcombinations of such aspects and features. Thus, for example, any aspect may be combined with an aforementioned feature in accordance with the present invention without requiring any other aspect or feature.
One or more preferred embodiments of the present invention now will be described in detail with reference to the accompanying drawings.
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As a preliminary matter, it will readily be understood by one having ordinary skill in the relevant art (“Ordinary Artisan”) that the present invention has broad utility and application. As should be understood, any embodiment may incorporate only one or a plurality of the above-disclosed aspects of the invention and may further incorporate only one or a plurality of the above-disclosed features. Furthermore, any embodiment discussed and identified as being “preferred” is considered to be part of a best mode contemplated for carrying out the present invention. Other embodiments also may be discussed for additional illustrative purposes in providing a full and enabling disclosure of the present invention. As should be understood, any embodiment may incorporate only one or a plurality of the above-disclosed aspects of the invention and may further incorporate only one or a plurality of the above-disclosed features. Moreover, many embodiments, such as adaptations, variations, modifications, and equivalent arrangements, will be implicitly disclosed by the embodiments described herein and fall within the scope of the present invention.
Accordingly, while the present invention is described herein in detail in relation to one or more embodiments, it is to be understood that this disclosure is illustrative and exemplary of the present invention, and is made merely for the purposes of providing a full and enabling disclosure of the present invention. The detailed disclosure herein of one or more embodiments is not intended, nor is to be construed, to limit the scope of patent protection afforded the present invention in any claim of a patent issuing here from, which scope is to be defined by the claims and the equivalents thereof. It is not intended that the scope of patent protection afforded the present invention be defined by reading into any claim a limitation found herein that does not explicitly appear in the claim itself.
Thus, for example, any sequence(s) and/or temporal order of steps of various processes or methods that are described herein are illustrative and not restrictive. Accordingly, it should be understood that, although steps of various processes or methods may be shown and described as being in a sequence or temporal order, the steps of any such processes or methods are not limited to being carried out in any particular sequence or order, absent an indication otherwise. Indeed, the steps in such processes or methods generally may be carried out in various different sequences and orders while still falling within the scope of the present invention. Accordingly, it is intended that the scope of patent protection afforded the present invention is to be defined by the issued claim(s) rather than the description set forth herein.
Additionally, it is important to note that each term used herein refers to that which the Ordinary Artisan would understand such term to mean based on the contextual use of such term herein. To the extent that the meaning of a term used herein—as understood by the Ordinary Artisan based on the contextual use of such term—differs in any way from any particular dictionary definition of such term, it is intended that the meaning of the term as understood by the Ordinary Artisan should prevail.
Regarding applicability of 35 U.S.C. §112(f), no claim element is intended to be read in accordance with this statutory provision unless the explicit phrase “means for” or “step for” is actually used in such claim element, whereupon this statutory provision is intended to apply in the interpretation of such claim element.
Furthermore, it is important to note that, as used herein, “a” and “an” each generally denotes “at least one,” but does not exclude a plurality unless the contextual use dictates otherwise. Thus, reference to “a picnic basket having an apple” describes “a picnic basket having at least one apple” as well as “a picnic basket having apples.” In contrast, reference to “a picnic basket having a single apple” describes “a picnic basket having only one apple.”
When used herein to join a list of items, “or” denotes “at least one of the items,” but does not exclude a plurality of items of the list. Thus, reference to “a picnic basket having cheese or crackers” describes “a picnic basket having cheese without crackers”, “a picnic basket having crackers without cheese”, and “a picnic basket having both cheese and crackers.” Finally, when used herein to join a list of items, “and” denotes “all of the items of the list.” Thus, reference to “a picnic basket having cheese and crackers” describes “a picnic basket having cheese, wherein the picnic basket further has crackers,” as well as describes “a picnic basket having crackers, wherein the picnic basket further has cheese.”
Additionally, as used herein, “cap” denotes “a lid configured to be attached to an object in covering relation to an interior containment space of the object”.
As used herein, a “scraper” is a brush, a group of bristles, a protuberance, a barb, or a finger; and is sufficiently rigid so as to generally hold form when not engaged by the distal end of a kerrison rongeur and to generally dislodge bone found in a cutting area of a kerrison rongeur when moved into or through the cutting area. Preferably, a scraper also is sufficiently flexible and resilient so as to generally deflect and bend to some extent upon abutment by and engagement with the distal end of a kerrison rongeur. A scraper may be relatively hard or soft within this range. Furthermore, a scraper preferably comprises a bio-absorbable material in at least some embodiments of the invention. In this respect, a scraper may comprise a brush with bio-absorbable bristles which, if inserted into the body, are absorbed by the body.
Referring now to the drawings, one or more preferred embodiments of the present invention are next described. The following description of one or more preferred embodiments is merely exemplary in nature and is in no way intended to limit the invention, its implementations, or uses.
Accordingly, a perspective view of a collector 100 used to collect cut bone from a kerrison rongeur is shown in
As will be appreciated, the collector 100 is hand-held and comprises a container body 101 (shown in
In use, the collector 100 is manually held at opposite ends in a generally horizontal position, as shown in
Preferably in use, a scrub nurse, assisting technician, or similar person (hereinafter generally “assistant”) moves or loads the collector 100 onto the distal end 108 of the kerrison rongeur when extended from the surgical site by the surgeon, who preferably maintains focus and attention on the surgical site and does not look away for purposes of aligning the distal end 108 with the intake port opening 106 (which alignment is the assistant's responsibility); it will be appreciated that the intake port opening 106 is maneuvered relative to and aligned with the distal end 108 by the assistant.
Upon receipt of the distal end 108 with the cut bone 110 through the opening 106 into the interior of the collector 100, the assistant depresses (pushes inwardly in direction of arrows A) on spring-loaded, axially-aligned end buttons 112,114 located on the opposite end caps 102,104 of the collector 100, respectively. In this respect, the buttons preferably are urged or biased by springs (not visible in
Once collected, the assistant removes (unloads) the collector 100 from the distal end 108 of the kerrison rongeur with the bone 110 remaining within the interior of the collector 100, either loosely retained therein or lodged within one of the opposed scrapers 116,118. Preferably the assistant then acknowledges to the surgeon the completion of the collection of the bone from kerrison rongeur, whereupon the surgeon returns the kerrison rongeur to the surgical site for continued cutting. This sequence continues until cutting by the surgeon is completed.
During the procedure, the bone 110 may be kept within the collector 100 until needed or may be removed as desired. The bone 110 preferably is harvested by removing each of the end caps 102,104 from the elongate body 101 of the collector 100.
The materials from which the components of the collector are made may be any desired, suitable material for use in the foregoing procedure. For instance, a scraper may comprise metal or other rigid or semi-rigid material that is effective in dislodging bone from the distal end of the kerrison rongeur. It is further contemplated that one or more of the materials may be molded from, for example, an inert plastic material. Furthermore, the materials preferably are lightweight such that the collector is readily manipulated by hand. Furthermore, the collector may be disposable, in that the collector may be used during a single medical procedure for a patient and then discarded in accordance with applicable HAZMAT protocols. Alternatively, one or more components of the collector (including all of the components) are designed to and are able to be sterilized for reuse with another patient during another procedure.
The collector 200 is hand-held and comprises a container body 201, shown to be generally cylindrical in shape. The container body 201 defines an interior containment space and includes a transparent sidewall portion 203 through which the interior of the container body 201 is visible.
The collector 200 further comprises a cap 205 that is attached to the container body 201.
The top of the cap 205 includes an intake port opening 213 centrally located in the top of the cap 205, perhaps as best shown in
It will be appreciated that the funnel-shaped top surface 202 of the cap 205 is designed to direct a distal end of a kerrison rongeur toward the opening 213 upon abutment therewith, and the stop 209 is intended to abut and physically preclude further advancement of the distal tip of the kerrison rongeur when received through the opening 213.
The cap 205 is freely rotatable relative to the container body 201, as indicated by the arrow R in
The stop 209 is located at a spacing relative to the opening 213 such that, upon receipt of the distal end of the kerrison rongeur and abutment thereof with the stop 209, the scrapers 211 extend over and cover the distal end of the kerrison rongeur proximate the cutting area in which cut bone would be found. Furthermore, rotation of the cap results in movement of the scrapers 211 around, about and through the cutting area of the distal end of the kerrison rongeur so as to dislodge and remove for collection any cut bone carried therein.
In this respect, the collector 200 is held horizontally generally as shown in
Preferably in use, an assistant moves or loads the collector 200 onto the distal end of a kerrison rongeur when extended from the surgical site by the surgeon, who preferably maintains focus and attention on the surgical site and does not look away for purposes of aligning the distal end with the intake port opening 213, which is generally located in the center of the cap 205. Alignment is the assistant's responsibility, and it will be appreciated that the intake port opening 213 is maneuvered relative to and aligned with the distal end of the kerrison rongeur by the assistant. The funnel-shaped surface 202 facilitates the alignment with and receipt of the distal tip within the opening 213.
Upon receipt of the distal end of the kerrison rongeur into the interior of the collector 200 and its abutment with the stop 209, the assistant twists (rotates in direction of arrow R) the cap 205 relative to the container body 201. This causes the scrapers 211 to engage and remove any cut bone carried by the kerrison rongeur, resulting in the bone either falling onto an interior wall of the container body 201 or becoming lodged within a scraper. Moreover, the transparency of the container body 201 will enable the assistant to view whether the bone has been collected yet from the kerrison rongeur, and to continue twisting the cap 205 on and relative to the container body 201 either until the bone has been collected or a reasonable number of rotations has occurred.
Once collected from the kerrison rongeur, the assistant removes (unloads) the collector 200 from the distal end of the kerrison rongeur with the bone remaining within the interior of the collector 200, either loosely retained therein or lodged within a scraper. Preferably the assistant then acknowledges to the surgeon the completion of the collection of the bone from kerrison rongeur, whereupon the surgeon returns the kerrison rongeur to the surgical site for continued cutting. This sequence continues until cutting by the surgeon is completed.
During the procedure, the bone may be kept within the collector 200 until needed or may be removed as desired. The bone preferably is harvested by removing the cap 205 from the container body 201. Bone that is lodged within a scraper can be removed by manually agitating the scraper and pulling on the bone so that the bone falls onto a sterile cloth, towel, pad, or table surface. The bone within the container body 201 that is loose may be dumped onto the sterile cloth, towel, or pad, or directly onto the sterile surface of the table. Bone within the container body 201 that is not loose may be manually removed. The harvested bone then can be used during the procedure, such as for example, in an autograft procedure.
The materials from which the components of the collector are made may be any desired, suitable material for use in the foregoing procedure. For instance, a scraper may comprise metal or other rigid or semi-rigid material that is effective in dislodging bone from the distal end of the kerrison rongeur. It is further contemplated that one or more of the materials may be molded from, for example, an inert plastic material. Furthermore, the materials preferably are lightweight such that the collector is readily manipulated by hand. Furthermore, the collector may be disposable, in that the collector may be used during a single medical procedure for a patient and then discarded. Alternatively, one or more components of the collector (including all of the components) are designed to and are able to be sterilized for reuse with another patient during another procedure.
The collector 400 is hand-held and comprises a container body 401, shown to be generally cylindrical in shape. The container body 401 defines an interior containment space and includes a transparent sidewall portion 403 through which the interior of the container body 401 is visible. The collector 400 further comprises a cap 405 that is attached to the container body 401. The cap 405 includes an interior ledge 411 that defines an intake port opening 413 through which the distal end of a kerrison rongeur is received. The cap 405 further includes a guide member 417 that projects from the ledge 411 and that is shaped and contoured for receiving and guiding therein a portion of the distal end of the kerrison rongeur. The guide member 417 preferably includes a U-shape configuration, as shown. An saddle member 419 extends from a bottom 409 of the container body 401 and, in conjunction with the guide member 417, assists in aligning the distal end of the kerrison rongeur for collection of bone, as shown in
A scraper 421 is provided proximate the bottom 409 of the container body 401 and extends toward the saddle member 419 into the cutting area of the distal end of a kerrison rongeur when aligned by the saddle member 419. The scraper 421 is secured to a base 423 that extends from the side wall 403 of the container body 401 in abutment with the bottom 409 of the container body 401. Further in this regard, the bottom 409 serves as a stop for the distal end of the kerrison rongeur.
The cap 405 is freely rotatable relative to the container body 401, as indicated by the arrows R in
The scraper 421 is located at a spacing relative to the saddle member 419 such that, upon receipt of the distal end of the kerrison rongeur and abutment thereof with the bottom 409 serving as a stop, the scraper 411 extends over and covers the distal end of the kerrison rongeur proximate the cutting area thereof in which cut bone would be found. Furthermore, rotation of the container body 401 relative to the cap 405 results in movement of the scraper 421 around, about and through the cutting area of the distal end of the kerrison rongeur so as to dislodge and remove for collection any cut bone carried therein. It will further be appreciated that the saddle member 419 also rotates with the container body 401, whereas the guide member 417 is an integral molded part of—and remains fixed relative to—the cap 405.
It will further be noted that the cap 405 defines an inner surface 430 that, when the collector is positioned for receiving the distal end of the kerrison rongeur, as shown in
Preferably in use, an assistant moves or loads the collector 400 onto the distal end of a kerrison rongeur when extended from the surgical site by the surgeon, who preferably maintains focus and attention on the surgical site and does not look away for purposes of aligning the distal end with the intake port opening 413, which is generally located in the center of the cap 405. Alignment is the assistant's responsibility, and it will be appreciated that the intake port opening 413 is maneuvered relative to and aligned with the distal end of the kerrison rongeur by the assistant. The guide member 417 further aids the assistant in positioning of the distal end of the kerrison rongeur within the saddle member 419 after being inserted through the opening 413.
Upon receipt of the distal end of the kerrison rongeur into the interior of the collector 400 and its abutment with the bottom 409 serving as a stop, the assistant twists (rotates back and forth in the directions of arrows R) the container body 401 relative to the cap 405. This causes the scraper 421 to engage and remove any cut bone carried by the kerrison rongeur, resulting in the bone either falling onto an interior wall of the container body 401 or becoming lodged within the bristles of the scraper 421. Moreover, the transparency of the side wall 403 container body 401 enables the assistant to view whether the bone has been collected yet from the kerrison rongeur, and to continue twisting the container body 401 relative to the cap 405 back and forth either until the bone has been collected or a reasonable number of attempts have been made by the assistant.
Once collected from the kerrison rongeur, the assistant removes (unloads) the collector 400 from the distal end of the kerrison rongeur with the bone remaining within the interior of the collector 400, either loosely retained therein or lodged within the bristles. Preferably the assistant then acknowledges to the surgeon the completion of the collection of the bone from kerrison rongeur, whereupon the surgeon returns the kerrison rongeur to the surgical site for continued cutting without taking focus away from the surgical site. This sequence continues until cutting by the surgeon is completed.
During the procedure, the bone may be kept within the collector 400 until needed or may be removed as desired. The bone preferably is harvested by removing the cap 405 from the container body 401. Bone that is lodged within a scraper can be removed by manually agitating the bristles and pulling on the bone so that the bone falls onto a sterile cloth, towel, pad, or table surface. The bone within the container body 401 that is loose may be dumped onto the sterile cloth, towel, or pad, or directly onto the sterile surface of the table. Bone within the container body 401 that is not loose may be manually removed by hand or with an instrument. The harvested bone then can be used during the procedure, such as for example, in an autograft procedure.
The materials from which the components of the collector are made may be any desired, suitable material for use in the foregoing procedure. For instance, a scraper may comprise metal or other rigid or semi-rigid material that is effective in dislodging bone from the distal end of the kerrison rongeur. It is further contemplated that one or more of the materials may be molded from, for example, an inert plastic material. Furthermore, the materials preferably are lightweight such that the collector is readily manipulated by hand. Furthermore, the collector may be disposable, in that the collector may be used during a single medical procedure for a patient and then discarded. Alternatively, one or more components of the collector (including all of the components) are designed to and are able to be sterilized for reuse with another patient during another procedure.
The collector 500 includes a container body 501 that is box-shaped with generally rectangular sides and a cap 505 with generally rectangular sides. The container body 501 defines an interior containment space and preferably includes transparent side walls 503. The container body 501 is utilized to store collected bone. The cap 505 includes a stop comprising a wall 519 that extends between opposed interior side surfaces of the cap 505 and divides passage through the cap to the interior of the container body 501 into two side passages 508 around opposite sides of the wall 519. Scrapers 521 are located in front of the wall and extend from one of the interior side surfaces of the cap 505 from to which the wall 519 connects.
Preferably in use, an assistant moves or loads the collector 500 onto the distal end of a kerrison rongeur when extended from the surgical site by the surgeon, who preferably maintains focus and attention on the surgical site and does not look away for purposes of aligning the distal end of the kerrison rongeur with the opening in the cap 505. Alignment is the assistant's responsibility, and it will be appreciated that the collector 500 is maneuvered relative to and aligned with the distal end of the kerrison rongeur by the assistant such that the distal end of the kerrison rongeur, when received within the cap 505, will come into abutment with the wall 519 and cease further advancement within the cap 505 toward the container body 501. The spacing of the wall 519 to the scrapers 521 is such that the scrapers will pass through the cutting area of the distal end of the kerrison rongeur when the collector 500 is moved back and forth in lateral directions relative to the longitudinal extent of the kerrison rongeur. Furthermore, the wall 519 may be maintained in abutment with the tip of the kerrison rongeur during such back and forth movement for proper alignment of the scarpers 521 relative to the cutting area of the kerrison rongeur, thereby facilitating dislodgment of cut bone found in the cutting area by the scrapers 521. Such back and forth movement is facilitated by longitudinally protruding ribs 515 on the cap 505, which enable better grasping by hand of the cap 505. Additionally, one or more ribs 515—such as the middle pair of ribs shown in
Once collected from the kerrison rongeur, the assistant removes (unloads) the collector 500 from the distal end of the kerrison rongeur with the bone remaining within the interior of the cap 505, either loosely retained therein or lodged within the bristles. Tilting of the collector 500 to a vertical orientation and light shaking of the collector 500 should cause any loose bone collected from the kerrison rongeur to fall through one of the side passages into the container body 501 where the bone yield can be viewed through the transparent walls 503.
Preferably the assistant acknowledges to the surgeon the completion of the collection of the bone from kerrison rongeur, whereupon the surgeon returns the kerrison rongeur to the surgical site for continued cutting without taking focus away from the surgical site. This sequence continues until cutting by the surgeon is completed.
During the procedure, the bone may be kept within the container body 501 of the collector 500 until needed or may be removed as desired. The bone preferably is harvested by removing the cap 505 from the container body 501. Bone that is lodged within any bristles of the scrapers 521 can be removed by manually agitating the bristles and pulling on the bone so that the bone falls onto a sterile cloth, towel, pad, or table surface. The bone within the container body 501 that is loose may be dumped onto the sterile cloth, towel, or pad, or directly onto the sterile surface of the table. Bone within the container body 501 that is not loose may be manually removed by hand or with an instrument. The harvested bone then can be used during the procedure, such as for example, in an autograft procedure.
The materials from which the components of the collector are made may be any desired, suitable material for use in the foregoing procedure. For instance, a scraper may comprise metal or other rigid or semi-rigid material that is effective in dislodging bone from the distal end of the kerrison rongeur. It is further contemplated that one or more of the materials may be molded from, for example, an inert plastic material. Furthermore, the materials preferably are lightweight such that the collector is readily manipulated by hand. Furthermore, the collector may be disposable, in that the collector may be used during a single medical procedure for a patient and then discarded. Alternatively, one or more components of the collector (including all of the components) are designed to and are able to be sterilized for reuse with another patient during another procedure.
The collector 800 includes a release mechanism 840 having a button 823 connected by an arm 842 to a wall 843. The wall 843 defines a release opening 844 therein. The release mechanism 840 is contained within the cap 805 and includes a spring 845 that biases the release mechanism 840 into a closed configuration, wherein bone collected within intake port 813 using scrapers 821 is blocked from access to an interior containment space of the container body 801. When the button 823 is depressed against the biasing of the spring 845 in the direction of arrow A, the wall 843 moves (slides) so as to align the release opening 844 with the intake port opening 813 thereby permitting the collected bone to pass to the interior of the container body 801. When in the closed configuration, the wall 843 serves as a stop for the distal end of a kerrison rongeur, in which position the scrapers 821 pass through the cutting area when the cap 805 is rotated about its longitudinal axis relative to the kerrison rongeur.
Additional collectors used to collect cut bone from a kerrison rongeur for harvesting in accordance with still yet more embodiments of the present invention embodiments are disclosed with reference to
A collector 900 in accordance with a first such embodiment is shown in
Unlike collector 900, the cap 1005 of collector 1000 forms a long, ergonomic handle 1075 for gripping where the suction port 1052 is located. Like collector 900, the intake opening 1013 of collector 1000 is formed in the cap 1005 and includes scrapers 1021 located within the interior thereof, as seen in
Still another collector in accordance with an embodiment of the present invention is shown in a perspective view in
Exemplary combinations of some of these elements, including the brush and wipers, are set forth in
In particular,
A perspective view of a collector 2300 in accordance with yet another embodiment of the invention is illustrated in
A perspective view of a collector 2400 in accordance with yet another embodiment of the invention—and structurally similar in design to the embodiment of
A perspective view of a collector 2500 in accordance with yet another embodiment of the invention is illustrated in
A perspective view of two collectors 2600,2650 each in accordance with another respective embodiment of the invention are illustrated in
b demonstrate insertion of the tip of a kerrison rongeur through the port and into the interior of the cap of the collector 2600 in engagement with the brush 2610. Specifically,
A perspective view of a collector 2900 in accordance with yet another embodiment of the invention is illustrated in
b show a prototype collector 3000 as represented by collector 2900 of
The plunger is biased by spring 3042 into an open position.
When inserted through the port 3048, the distal end 3045 of the tip of the rongeur contacts a stop 3030, which is best seen in
In accordance with preferred embodiments of the present invention, a patient advantageously is afforded his or her own bone for the fusion when a collector is used to harvest bone cut from the patient using a kerrison rongeur. For example, Lamina chips are clinically proven to have both osteoinductive and osteoconductive properties conducive for bone fusion. By using a patient's own bone, there is less chance of rejection, infection, and significant cost by not having to rely on bone substitute.
Based on the foregoing description, it will be readily understood by those persons skilled in the art that the present invention is susceptible of broad utility and application. Many embodiments and adaptations of the present invention other than those specifically described herein, as well as many variations, modifications, and equivalent arrangements, will be apparent from or reasonably suggested by the present invention and the foregoing descriptions thereof, without departing from the substance or scope of the present invention.
Accordingly, while the present invention has been described herein in detail in relation to one or more preferred embodiments, it is to be understood that this disclosure is only illustrative and exemplary of the present invention and is made merely for the purpose of providing a full and enabling disclosure of the invention. The foregoing disclosure is not intended to be construed to limit the present invention or otherwise exclude any such other embodiments, adaptations, variations, modifications or equivalent arrangements, the present invention being limited only by the claims appended hereto and the equivalents thereof.
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| Number | Date | Country |
|---|---|---|
| 2015154060 | Oct 2015 | WO |
| Entry |
|---|
| International Search Report and Written Opinion in PCT/US2015/024402 by the USPTO, dated Sep. 30, 2015, 11 pages. |
| Number | Date | Country | |
|---|---|---|---|
| 20150282816 A1 | Oct 2015 | US |
| Number | Date | Country | |
|---|---|---|---|
| 61975698 | Apr 2014 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/US2015/024402 | Apr 2015 | US |
| Child | 14679903 | US |
