Dave's PCF WIP: Paragraphs

Paragraphs

Actions	Application	Content	Paragraph Number	Notes	Modified
		Content		Paragraph Number	Notes	Any Field
View Edit Delete	FLO-4	One general aspect includes a bone plate that may include: a recess bounded by a rim; and a pair of screw openings; a rotatable structure coupled to the bone plate such that the rotatable structure is rotatable, within the recess, between a locked orientation and an unlocked orientation, the rotatable structure may include: a pair of opposed arms, each of which is adapted to retain a screw positioned within one of the pair of screw openings when the rotatable structure is in the locked orientation, thereby restricting back-out of the screw; and a drive feature adapted to receive torque from a driver to rotate the rotatable structure between the locked orientation and the unlocked orientation. The implant also includes where the bone plate and the rotatable structure cooperate to define a detent mechanism adapted to retain the rotatable structure in the locked orientation, the detent mechanism may include: a niche defined in one of the rim and the rotatable structure; and an ear defined in the other of the rim and the rotatable structure, where the ear is sized to be received in the niche.	9	Added by DJM 5 2021	5/1/21, 12:00 AM
View Edit Delete	FLO-4	Implementations may include one or more of the following features. The implant assembly where the lock feature may include at least one groove and the head feature may include at least one ridge. The head feature may include a plurality of ridges, each ridge may include a long ramp and a short ramp, the long ramp adapted to facilitate sliding of the lock feature past one or more of the plurality of ridges as the rotatable structure rotates to the locked orientation. The lock feature may include a bump and the head feature may include a depression. The rotatable structure may include a bright color that facilitates connecting a driver to a drive feature of the rotatable structure, the drive feature adapted to receive torque from the driver to rotate the rotatable structure between the unlocked orientation and the locked orientation.	8	Added by DJM 5 2021	5/1/21, 12:00 AM
View Edit Delete	FLO-4	As used herein, "back-out" refers to a condition, state, position, and/or movement of a fastener from an initial position to a second position in which the fastener is less engaged and/or less connected to a corresponding part. The corresponding part can be a complementary part associated with the fastener or a part of a material that configured to receive the fastener. For example, where the fastener is a screw with external threads. Back-out can refer to the screw rotating in a reverse direction of the direction that tightens the screw with respect to internal threads or a material that receives the screw. In addition, back-out can include lateral or linear movement of a fastener out of a receiver, such as a hole, a nut, or the like. Back-out can be caused by a variety of forces, including but not limited to failure of threads of either the fastener or a hole having internal threads, a break in a shank of a fastener, a torque applied to the fastener in a direction opposite of the torque required to fasten the fastener to another part, or the like.	7	Added by DJM 5 2021	5/1/21, 12:00 AM
View Edit Delete	FLO-4	One general aspect includes an implant assembly. The implant assembly also includes a screw adapted to engage bone of a patient; the screw may include a head may include a head feature. The assembly also includes an implant adapted to receive the screw, the implant may include: a bone plate; and a rotatable structure coupled to the bone plate such that the rotatable structure is rotatable between a locked orientation and an unlocked orientation, the rotatable structure may include a bottom surface may include a lock feature adapted to engage the head feature when the rotatable structure is rotated to the locked orientation, thereby preventing rotation and back-out of the screw.	6	Added by DJM 5 2021	5/1/21, 12:00 AM
View Edit Delete	FLO-4	Implementations may include one or more of the following features. The implant assembly where the lock feature may include a plurality of radial grooves and the head feature may include a plurality of ridges, the plurality of radial grooves adapted to engage the plurality of ridges. The implant assembly may include a rotation limiter adapted to engage the rotatable structure and limit a degree of rotation of the rotatable structure. The rotation limiter may include a first flat surface of the bone plate and a first corresponding surface of the rotatable structure, the first flat surface and first corresponding surface configured to limit rotation of the rotatable structure beyond the locked orientation. The rotation limiter may include a second flat surface of the bone plate and a second corresponding surface of the rotatable structure, the second flat surface and second corresponding surface configured to limit rotation of the rotatable structure beyond an unlocked orientation. The degree of rotation is up to about 50 degrees. The bone plate may include a recess adapted to receive the rotatable structure; the recess may include a first flat surface adapted to engage a first corresponding surface of the rotatable structure to limit rotation of the rotatable structure beyond a locked orientation. The screw opening is configured to enable the screws to pivot within the screw opening within a range of motion ranging between approximately 45 degrees and approximately -45 degrees and where the head feature and lock feature are adapted to engage with each other with the screw pivoting within the range of motion and the rotatable structure in the locked orientation.	5	Added by DJM 5 2021	5/1/21, 12:00 AM
View Edit Delete	FLO-4	To achieve the foregoing, and in accordance with the disclosure as embodied and broadly described herein, an implant assembly may be provided. One general aspect of the implant assembly can include a screw that may also include a head which may include a head feature which may include one of a ridge and a radial groove. The implant assembly may also include an implant securable to a bone of a patient with the screw. The implant may include: a bone plate that may have a screw opening sized to receive the screw. The implant may also include a rotatable structure coupled to the bone plate such that the rotatable structure is rotatable between a locked orientation and an unlocked orientation, the rotatable structure may include: a top surface; a bottom surface that may include a lock feature that may include the other of the ridge and the radial groove. The implant assembly may also include where the lock feature is positioned such that: with the rotatable structure in the locked orientation, the lock feature engages the head feature, thereby restricting rotation of the screw within the screw opening; and with the rotatable structure in the unlocked orientation, the lock feature disengages from the head feature, thereby permitting rotation of the screw within the screw opening.	4	Added by DJM 5 2021	5/1/21, 12:00 AM
View Edit Delete	FLO-4	The various apparatus, devices, systems, and/or methods of the present disclosure have been developed in response to the present state of the art, and in particular, in response to the problems and needs in the art that have not yet been fully solved by currently available implants. The apparatus, devices, systems, and/or methods of the present disclosure may provide implant assemblies that remedy shortcomings of prior art implants.	3	Added by DJM 5 2021	5/1/21, 12:00 AM
View Edit Delete	FLO-4	Optionally, each of the rotatable structures 112 may include a pair of opposed arms 114, with each arm blocking withdrawal of a respective screw 104 when the rotatable structure 112 is in the locked orientation. In some embodiments, a locking mechanism may be shaped to block withdrawal of one, three, or more screws rather than two. In such configurations (not shown), the locking mechanisms may have one, three, or more arms, with one arm for each screw 104 the locking mechanism is to retain. In some embodiments, the arms 114 may not only interfere with linear motion of the screws 104 out of the bones 102 but may also interfere with rotation of the screws 104 in a direction that would loosen their engagement with the bones 102 (for example, counterclockwise in the view of FIG. 1A).	37	Added by DJM 5 2021	5/1/21, 12:00 AM
View Edit Delete	FLO-4	Referring now to FIGs. 1A and 1B, each of the locking mechanisms 110 may further have a detent mechanism that tends to urge its rotatable structure 112 to move fully into the unlocked orientation or the locked orientation. As used herein, a "detent" refers to an apparatus, instrument, structure, device, component, feature, system, mechanism, assembly, or module structured, organized, configured, designed, arranged, or engineered to resist or arrest the motion or rotation of a wheel, axle, spindle, or other structure. (Search 'detent' on Wikipedia.com June 22, 2020. Modified. Accessed March 19, 2021.) In certain embodiments, the detent continues to resist or arrest the motion or rotation while in an engaged configuration and permits the motion or rotation when in a disengaged configuration. Examples of a detent may include a single structure or a combination of structures cooperating to serve as a detent. Examples of a detent and/or detent assembly include but are not limited to a ratchet and pawl, a nub or bump and a recess, a recess and a raised or extending structure, a notch and a pin, a set of notches or recesses in a smooth structure and a set of corresponding nubs, latches, pins, spring loaded ball bearings, or the like. In one embodiment, a detent may comprise an ear of a rotatable structure and a groove, niche, notch, or carve-out of another structure.	46	Added by DJM 5 2021	5/1/21, 12:00 AM
View Edit Delete	FLO-4	Those of skill in the art will appreciate that the lock feature 105 and head feature 107 can be any structure on either the rotatable structure 112 and/or the head 210 configured and designed to engage with each other to accomplish the same result as the radial grooves 116 and raised ridges 216 described in the example embodiments herein. For example, in one embodiment, the lock feature 105 may be a bump or protuberance and the head feature 107 may be a depression or recess or hole such that these two features are configured to engage with each other to retain a screw 104 in the screw opening 106. In certain embodiments, the lock feature 105 and the head feature 107 may together be consider a type of detent mechanism.	45	Added by DJM 5 2021	5/1/21, 12:00 AM
View Edit Delete	FLO-4	The rotatable structure 112 is positioned on the bone plate 108 such that the lock feature 105 is disengaged from the head feature 107 when the rotatable structure 112 is rotated to an unlocked orientation. Accordingly, the screw 104 can rotate within the screw opening 106. When the rotatable structure 112 is rotated to a locked orientation the lock feature 105 engages the head feature 107 and in this manner restricts rotation of the screw 104 within the screw opening 106.	44	Added by DJM 5 2021	5/1/21, 12:00 AM
View Edit Delete	FLO-4	In one embodiment, the radial grooves 116 extend like radii of a circle that can be centered approximately where a screw 104 may seat within a screw opening 106 of the bone plate 108. In another embodiment, the lock feature 105 may include a single groove 116 positioned along the bottom surface 103 of the arm 114. Similarly, the head feature 107 may include a single raised ridge 216 configured to engage a corresponding single radial groove 116 of the lock feature 105.	43	Added by DJM 5 2021	5/1/21, 12:00 AM
View Edit Delete	FLO-4	In the illustrated embodiment, the lock feature 105 includes radial grooves 116. In embodiments for which the lock feature 105 includes radial grooves 116, the head feature 107 may include raised ridges 216 that correspond to the radial grooves 116. The raised ridges 216 of the head feature 107 may be shaped similarly to engage with the radial grooves 116.	42	Added by DJM 5 2021	5/1/21, 12:00 AM
View Edit Delete	FLO-4	The lock feature 105 and head feature 107 are configured such that once they engage with each other they cooperate to prevent both counterclockwise rotation and linear backing out of each of the screws 104, relative to the bones 102. Having the lock feature 105 on the bottom surface 103 enables the rotatable structure 112 to engage the lock feature 105 with the head feature 107 when the rotatable structure 112 is in the locked orientation. By rotating the rotatable structure 112 to the locked orientation the lock feature 105 engages with the head feature 107 and this restricts rotation of a screw 104 within a screw opening 106.	41	Added by DJM 5 2021	5/1/21, 12:00 AM
View Edit Delete	FLO-4	In one embodiment, the lock feature 105 and head feature 107 include structures that cooperate to selectively engage and lock two structure relative to each other. For example, a lock feature 105 may include one or more radial grooves 116. And a head feature 107 may include one or more raised ridges 216 adapted to engage a corresponding one or more radial grooves 116 of the lock feature 105. Of course, in another embodiment, the lock feature 105 may include one or more raised ridges 216 and the head feature 107 may include a corresponding one or more radial grooves 116.	40	Added by DJM 5 2021	5/1/21, 12:00 AM
View Edit Delete	FLO-4	The bottom surface 103 includes a lock feature 105 configured to cooperate with a head feature 107 (See FIG. 1A, 2A) of a screw 104. As used herein, "feature" refers to a distinctive attribute or aspect of something. (Search "feature" on google.com. copyright Oxford Languages, 2021. Web. 20 Apr. 2021.) A feature may include a modifier that identifies a particular function or operation and/or a particular structure relating to the feature. For example, a lock feature 105 refers to a feature that relates to, or is involved in, a locking function. Similarly, head feature 107 refers to a feature that is associated with a particular part, such as a head of a screw 104.	39	Added by DJM 5 2021	5/1/21, 12:00 AM
View Edit Delete	FLO-4	FIG. 1B is a bottom view of a rotatable structure 112, according to one embodiment of the present disclosure. The rotatable structure 112 may include a top surface 101 (See FIG. 1A) and a bottom surface 103. The bottom surface 103 may face the bone plate 108.	38	Added by DJM 5 2021	5/1/21, 12:00 AM
View Edit Delete	FLO-4	Bone implants and bone fixation procedures and implants have been used to secure two bones or bone parts or to fix one bone relative to other bones. For example in spinal fixation intervertebral implants can be used to secure, or fixate, two or more vertebrae through minimally invasive or invasive spinal surgery. Conventional implant assemblies can include screws that engage bone and secure the implant to the bone. However, over time the bone screws can become loose, or threads of screws can strip from the bone. This stripping and loosing can cause the screw to back out of a screw hole or rotate and loosen with the screw hole. Consequently, blocks or locks can be used to retain the screw within a screw opening of an implant. Unfortunately, existing blocks or locks do not adequately retain screws within an implant. Accordingly, a need exists for improved implant assemblies.	2	Added by DJM 5 2021	5/1/21, 12:00 AM
View Edit Delete	FLO-4	In FIG. 1A, the top two locking mechanisms 110 are shown in the unlocked orientation, while the bottom locking mechanism 110 is shown in the locked orientation. Each of the rotatable structures 112 may have a drive feature 118 or other torque-receiving feature that mates with a tool, such as driver (not shown) with a star-shaped head, to allow a surgeon to rotate the rotatable structure 112.	36	Added by DJM 5 2021	5/1/21, 12:00 AM
View Edit Delete	FLO-4	The rotatable structure 112 is coupled to the bone plate 108 such that the rotatable structure 112 is rotatable between a locked orientation and an unlocked orientation.	35	Added by DJM 5 2021	5/1/21, 12:00 AM

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