US20160074071A1 - Methods of using woven retention devices and systems - Google Patents
Methods of using woven retention devices and systems Download PDFInfo
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- US20160074071A1 US20160074071A1 US14/487,895 US201414487895A US2016074071A1 US 20160074071 A1 US20160074071 A1 US 20160074071A1 US 201414487895 A US201414487895 A US 201414487895A US 2016074071 A1 US2016074071 A1 US 2016074071A1
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- retention device
- woven retention
- delivery tube
- push rod
- woven
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Classifications
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- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
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Definitions
- the present invention relates generally to methods of using woven retention devices and systems. More specifically, the present invention relates to methods of preparing, inserting, and using woven retention devices in bone.
- Bone fracture repair is surgery to fix a broken bone using plates, nails, screws, or pins. It is common in the treatment of fractures to attach a plate to the bone utilizing bone screws. The resulting construct prevents motion of the fractured bone so that the bone can heal. Alternatively, one or more screws may be inserted across the break to hold it place.
- pedicle screws are inserted into the patient's vertebrae to serve as anchor points that can then be connected with a rod. This construct prevents motion of the vertebral segments that are to be fused.
- screw-like tissue anchors are inserted into the patient's bone to serve as an anchor for the reattachment of the tendon.
- bone screws One complication with the use of bone screws is the loss of fixation or grip between the bone screw and the patient's bone. Another complication with the use of bone screws is the stripping of the hole in the bone when the bone screw is inserted. This results in the loss of purchase and holding strength of the bone screw.
- osteoporotic bone can increase the likelihood of complications by reducing the purchase or grip of the bone screw to the patient's bone, resulting in a loss of holding strength and loosening of the bone screw or pullout of the bone screw.
- a method of inserting a woven retention device into a bone hole includes providing a woven retention device having a distal end that is tapered, a proximal end to receive a fastener, and a sleeve body between the distal and proximal ends.
- the method includes providing a delivery tube including a distal opening and a proximal opening, the distal opening having a compression portion over at least a distal end of the delivery tube.
- the method also includes providing a push rod having a distal end to push the woven retention device through the distal opening of the delivery tube.
- the method further includes positioning the distal opening of the delivery tube near an opening of the bone hole in a bone surface and advancing the woven retention device through the compression portion of the distal opening of the delivery tube and into the bone hole by pushing on an interior of the tapered distal end of the woven retention device using the distal end of the push rod.
- the delivery tube has a side wall opening.
- the push rod may be arranged such that at least a portion of the push rod passes within the side wall opening of the delivery tube when advancing the woven retention device through the distal opening.
- the delivery tube can have an end slot at a distal portion of the delivery tube, and may have three end slots at the distal portion of the delivery tube.
- the woven retention device is advanced into the bone hole until the proximal end of the woven retention device is substantially flush with the bone surface.
- the method further includes compressing the woven retention device at least near the distal opening of the delivery tube as the woven retention device is advanced through the distal opening, where the delivery tube includes a narrowed region near the distal opening for compressing the woven retention device.
- the narrowed region has an inner diameter that is less than an outer diameter of the sleeve body.
- the method may further include inserting the woven retention device into the delivery tube through a proximal opening of the delivery tube.
- the method further includes inserting the fastener into the woven retention device through the proximal end of the woven retention device after the woven retention device is placed in the bone hole.
- the method includes cutting the woven retention device, before inserting the woven retention device into the bone hole, to a desired length based on a depth of the bone hole. A proximal end portion of the woven retention device may be cut to achieve the desired length.
- the method includes measuring a portion of the woven retention device to determine a location along a length of the woven retention device to perform the cutting.
- the delivery tube includes indicia for measuring a desired length of the woven retention device, the indicia being on a wall of the delivery tube. The method can include measuring the desired length of the woven retention device using the indicia, and cutting the woven retention device to the desired length prior to inserting the woven retention device into the bone hole.
- the measuring of the desired length can include aligning the distal end of the woven retention device with the indicia indicating the desired length of the woven retention device, and also may include cutting a portion of the sleeve body that extends proximally to the proximal opening of the delivery tube.
- the method may also include measuring a desired length of the woven retention device using indicia provided on a packaging of at least one of the woven retention device, the delivery tube, and the push rod, and cutting the woven retention device to the desired length.
- the method of using the woven retention device includes compressing the woven retention device with a compressing portion of the delivery lumen while inserting the woven retention device into the bone hole.
- the method may include cutting off an excess portion of the woven retention device based on measuring the desired length of the woven retention device.
- the method may include positioning the distal opening of the delivery tube near an opening of the bone hole.
- the measuring may include aligning a distal end of the woven retention device with a measuring tool, where the excess portion of the woven retention device can include a portion near a proximal end of the woven retention device.
- the measuring tool may include indicia on the delivery tube, and the excess portion includes a portion proximal to a proximal end of the delivery tube.
- the measuring may be performed while the distal end of the woven retention device is within the delivery tube.
- the measuring includes using a slidable measuring apparatus that can hold the woven retention device and output a distance based on a distance relationship between two ends of the slidable measuring apparatus.
- a method of inserting a woven retention device into a bone hole includes positioning a distal opening of a delivery lumen near an opening of the bone hole, pushing the woven retention device through the distal opening using a push rod, a distal end of the push rod being arranged within the delivery lumen to push the woven retention device and at least a portion of a proximal end of the push rod remaining outside of the delivery lumen, and advancing the woven retention device to a desired depth within the bone hole using the push rod.
- the portion of the push rod that remains outside of the delivery lumen is connected to a portion of the push rod that is within the delivery lumen via a slotted opening in a side wall of the delivery lumen.
- the method can also include applying a force to the portion of the proximal end of the push rod that remains outside of the delivery lumen to push the push rod.
- the method includes compressing the woven retention device with a compressing portion of the delivery lumen while inserting the woven retention device into the bone hole.
- the method can include cutting off an excess portion of the woven retention device based on the measuring.
- the method may also include positioning the distal opening of the delivery tube near an opening of the bone hole.
- the measuring can include aligning a distal end of the woven retention device with a measuring tool.
- the method may also include where the excess portion of the woven retention device includes a portion near a proximal end of the woven retention device.
- the measuring tool can have indicia on the delivery tube, and the excess portion includes a portion proximal to a proximal end of the delivery tube.
- the measuring may be performed while the distal end of the woven retention device is within the delivery tube.
- the method includes using a slidable measuring apparatus that is configured to hold the woven retention device and output a distance based on a distance relationship between two ends of the slidable measuring apparatus.
- a method of inserting a woven retention device into a bone hole includes measuring a desired length of the woven retention device to be inserted into the bone hole, pushing the woven retention device through a distal opening of a delivery tube using a push rod, and advancing the woven retention device to a desired depth within the bone hole using the push rod.
- the method includes cutting off an excess portion of the woven retention device based on the measuring.
- the method may include positioning the distal opening of the delivery tube near an opening of the bone hole.
- the measuring can include aligning a distal end of the woven retention device with a measuring tool.
- the method may also include where the excess portion of the woven retention device includes a portion near a proximal end of the woven retention device.
- the measuring tool can be indicia on the delivery tube, and the excess portion can be a portion proximal to a proximal end of the delivery tube.
- the measuring can be performed while the distal end of the woven retention device is within the delivery tube and can use a slidable measuring apparatus that is configured to hold the woven retention device and output a distance based on a distance relationship between two ends of the slidable measuring apparatus.
- FIG. 1A shows an exploded view of a push rod, a woven retention device and a delivery tube that have not been pushed into each other, according to an embodiment of the invention, as well as the combination of the elements after the push rod has pushed the retention device through a portion of the delivery tube, according to an embodiment of the invention.
- FIG. 1B shows a delivery tube that is positioned near a bone hole and a retention device configured to be pushed through the delivery tube, according to an embodiment of the invention.
- FIG. 1C shows a partial cut-away view of a delivery tube that is positioned near a bone hole and a push rod pushing the retention device through the delivery tube, according to an embodiment of the invention.
- FIG. 2 shows a partial cut-away view of an implanted woven retention device with a screw being inserted after a retention device has been inserted into a bone hole, according to an embodiment of the invention.
- FIG. 3 shows a screw fully inserted into a woven retention device in a bone hole, according to an embodiment of the invention.
- FIG. 4 shows a delivery tube having measurement indicia that allows for measuring an appropriate length of the woven retention device, and cutting the excess amount of the retention device, according to an embodiment of the invention.
- FIG. 5A shows a woven retention device becoming compressed due to passing through the compression portion of the delivery tube, according to an embodiment of the invention.
- FIG. 5B shows a close-up view of delivery tube disposed partially in a bone hole, according to an embodiment of the invention.
- FIGS. 6A-6E show various views of a delivery tube with a measurement scale and a side wall opening on the delivery tube, according to an embodiment of the invention.
- FIGS. 7A and 7B show a slidable push rod and delivery tube with a measuring scale, according to an embodiment of the invention.
- FIGS. 8A-8E show a slotted delivery tube, push rod with a planar surface handle that is perpendicular to the longitudinal axis of the delivery tube, and a stopper coupled to the push rod inside the delivery tube, according to an embodiment of the invention.
- FIGS. 9A-9D show a packaging system with a slidable measuring mechanism for measuring and cutting the woven retention device, according to an embodiment of the invention.
- FIGS. 10A-10D show multiple packaging, delivery tubes and push rod embodiments, according to embodiments of the invention.
- FIGS. 11A and 11B show packaging elements of the woven retention device kit with the packaging including a measuring mechanism, according to an embodiment of the invention.
- FIG. 12 shows packaging elements of the woven retention device kit in a long form of the push rod, according to an embodiment of the invention.
- FIG. 13 shows packaging elements of the woven retention device kit with a push rod having an offset handle portion, according to an embodiment of the invention.
- FIG. 14 shows separated elements of the woven retention device kit shown in FIG. 13 , according to an embodiment of the invention.
- FIG. 15 shows the elements of the woven retention device kit of FIG. 13 in an arrangement for inserting the woven retention device into a bone, according to an embodiment of the invention.
- the devices, systems and methods described herein may be used in the area of orthopedics and, in particular, orthopedic repairs. These include various devices, systems and methods directed to fixing and/or retaining fasteners in orthopedic applications. Fixing or retaining fasteners to bone tissue is complicated by the underlining bone tissue. Understanding that an underlying cause of failure with internal fixation in bone tissue is the bone, the devices, systems and methods described herein provide for solutions that address the implant site. At the implant site, the hole and the bone benefit from an enhanced interface.
- fixation and/or retention devices, systems and methods described herein maximize fixation and/or retention in the bone tissue, including, osteoporotic bone, bone of a poor quality, and mechanically poor bone in addition to healthy bone tissue.
- the fixation and/or retention devices, systems and methods described herein may be used with any type of fixation including any types of screws, pins, or other fasteners.
- the devices, systems and methods described herein enhance the interaction of a bone anchor to a bone hole to provide enhanced fixation. Additionally, the devices, systems and methods may repair the surface of the bone hole following damage to the bone hole as in the case of stripping of the hole in the bone when a bone screw is over-tightened. Also, the devices, systems and methods provide for an enhanced bone hole surface for the reattachment of tendons in, for example, anterior/posterior cruciate ligament repair procedures, rotator cuff repair procedures, etc. The devices enhance the surface of a bone hole to enhance fixation of a bone anchor to bone and permits bone ingrowth into its structure. The devices enhance the interaction between the surface of a bone hole and the fixation device.
- the devices interdigitate with the bony structure and interact with the fixation device.
- the device alone, as a single device, enhances the surface of a bone hole to enhance fixation of a bone anchor to bone and accommodates variations in the diameter and depth of the bone hole.
- the devices, systems and methods can enhance fixation without requiring the use of cement and/or adhesives.
- cements and/or adhesive can be used in addition to or in place of another bone anchor such as a screw, pin, or other orthopedic implant.
- the methods may use insertion tools, kits, and/or device or system packaging that aid a user of the fixation devices to achieve a desired placement and fit of the fixation device within the bone hole of the patient, in order to achieve optimal performance of the fixation device.
- FIGS. 1A , 1 B, and 1 C show examples of a woven retention device for inserting into a bone hole 150 of a bone 152 to interface with a bone surface 154 in the bone hole 150 .
- FIG. 1A shows two woven retention devices 100 , 100 ′ for insertion into respective bone holes 150 , 150 ′.
- Woven retention device 100 is shown in an exploded view with respect to a delivery tube 160 and push rod 170 used for inserting the woven retention device 100 into bone hole 150 .
- the woven retention device 100 includes a proximal end 102 with a proximal opening 103 , a distal end 104 that is tapered 105 to a distal tip 106 , and a sleeve body 108 extending between the proximal and distal ends 102 , 104 .
- the proximal end 102 may be able to receive a fastener (not shown in FIG. 1A ) through the proximal opening 103 .
- the delivery tube 160 also includes a proximal end 162 with a proximal opening 163 , a distal end 164 with a distal opening 165 , and a tube body 166 extending between the proximal and distal ends 162 , 164 .
- the push rod 170 has a proximal end 172 , a distal end 174 with a distal tip 175 , and a rod body 176 .
- a method of inserting the woven retention device 100 into the bone hole 150 includes pushing the woven retention device 100 through the delivery tube 160 using the push rod 170 .
- FIG. 1A shows woven retention device 100 ′ being pushed through the delivery tube 160 with the push rod 170 .
- the distal tip 175 of the push rod 170 exerts a force on an interior of the woven retention device 100 ′ in at least the distal end 104 of the woven retention device 100 ′.
- the tip 175 of the push rod 170 may push on a distal-most interior wall of the distal tip 106 and/or on at least a portion of the tapered portion 105 .
- the distal tip of the push rod may be shaped to at least partially conform to a shape of the interior surface of the distal tip of the tapered portion of the woven retention device.
- the distal tip of the push rod may be tapered or otherwise shaped to contact the inner surface of the woven retention device.
- the distal tip of the woven retention devices may be closed, while in other embodiments the distal tip may have an opening with a smaller diameter than the proximal opening of the woven retention device. In a case where the distal end of the woven retention device is open, the diameter at the distal tip may be small enough so that the push rod does not extend through the opening when pushing the woven retention device through the delivery tube and into the bone hole.
- the delivery tube 160 may include a compression portion 168 at least at or near the distal end 164 of the delivery tube 160 .
- the compression portion 168 can force the woven retention device 100 ′ to radially contract as the woven retention device 100 ′ is pushed through the distal opening 165 with the push rod 170 .
- the compression portion 168 may be a portion of the delivery tube 160 with an inner diameter that is smaller than an outer diameter of the woven retention device 100 ′ when the woven retention device 100 ′ is in a relaxed state. Further details of the compression portion 168 according to some embodiments will be discussed further below.
- the distal opening 165 of the delivery tube 160 may be positioned at or near the opening 156 of the bone hole 150 , as shown in FIG. 1B .
- the woven retention device 100 ′ when the woven retention device 100 ′ is pushed through the delivery tube 160 and is compressed by the compression portion 168 , the woven retention device 100 ′ can easily be inserted into the bone hole 150 due to the radially contracted state of the woven retention device 100 ′ from the compression portion 168 .
- the contracted state of the woven retention device 100 ′ allows it to easily enter the opening 156 without being obstructed by the periphery of the opening 156 .
- the woven retention device 100 ′ can avoid obstructions in the bone hole 150 itself due to irregularities in the bone hole 150 .
- the woven retention devices 100 , 100 ′ have a construction such that they return to their relaxed state after passing fully through the compression portion 168 , the relaxed state being one in which the woven retention device 100 , 100 ′ has a diameter d r ( FIG. 1B ) that is larger than a diameter d c ( FIG. 1C ) when in the compressed state.
- the size of the bone hole 150 may prevent the woven retention devices 100 , 100 ′ from fully returning to their relaxed state if the bone hole 150 has an inner diameter that is smaller than an outer diameter of the woven retention device in the relaxed state. Nonetheless, the woven retention device 100 will be biased to expand or return to the relaxed state.
- the woven retention device can elastically expand and/or self-expand to the relaxed state. In expanding towards the relaxed state, the woven retention device will press against the bone surface 154 of the bone hole 150 . It is also possible that the bone hole 150 has an inner diameter that is larger than the outer diameter of the woven retention device in a relaxed state.
- the woven retention device may not fully contact the bone surface 154 of the bone hole 150 when the woven retention device is in the relaxed state.
- the woven retention device may transition to an expanded state when a fastener is later inserted into the woven retention device.
- the woven retention device can provide the desired interaction between the fastener and the bone hole. Therefore, according to the properties of the woven retention device and the compression portion 168 of the delivery tube 160 , a system and method may be provided which allows for easy insertion of the woven retention device 100 , 100 ′ into the bone hole 150 while nonetheless ensuring the desired interaction between the woven retention device, the fastener, and the bone surface 154 .
- the method includes inserting a fastener 180 into the woven retention device 100 after the woven retention device 100 is placed into the bone hole 150 .
- the fastener 180 is a bone screw.
- embodiments of the invention are not limited to bone screws, and other fasteners such as rods, pins, prosthetic devices, or other devices can be inserted into the woven retention device 100 .
- the fastener 180 may be inserted fully into the woven retention device 100 such that a proximal end 182 of the fastener 180 is substantially flush with the proximal end 102 of the woven retention device 100 or with the surface of the bone 152 .
- a method of inserting a woven retention device may include removing an excess portion of the woven retention device 100 so that it fits as desired in a bone hole of a particular size.
- FIG. 4 shows an example of such an embodiment.
- the woven retention device 100 is at least partially inserted into a measuring tube 260 that is equipped with a mechanism for measuring the woven retention device 100 .
- the measuring is accomplished using measuring indicia 261 on the side of the measuring tube 260 .
- the woven retention device 100 is at least partially inserted into the measuring tube 260 until the distal end 104 of the woven retention device 100 reaches a desired position relative to the measuring indicia 261 .
- the relative position of the woven retention device 100 can be appreciated by the measuring tube 260 having a clear tube body 266 . After the woven retention device 100 is inserted to the desired position, a portion of the distal end 104 of the woven retention device 100 may be removed using scissors 190 , for example, as shown in FIG. 4 . In an embodiment, the woven retention device 100 is cut at a point approximately level the proximal opening 263 of the measuring tube 260 .
- the measuring indicia 261 can be arranged such that the measuring indicia 261 measure a distance from the proximal opening 263 of the measuring tube 260 and, correspondingly, a length of the woven retention device 100 from the distal end 104 of the woven retention device 100 to proximal opening 263 (or other position where the woven retention device 100 is cut).
- a portion of the delivery tube 360 near the distal end 364 includes one or more distal slots 367 as shown in FIG. 5A .
- the distal slots 367 define one or more prongs 368 at or near the distal end 364 of the delivery tube 360 .
- the compression portion of the delivery tube 360 can be formed from these compression prongs 368 .
- the compression prongs 368 are biased radially inward towards a longitudinal axis of the delivery tube 360 , thus forming a narrowed distal opening 365 of the delivery tube 360 .
- An odd number can provide more circumferentially uniform compression of the woven retention device because the distal slots are not aligned with each other.
- An even number of slits would have the slots aligned if the slots are placed symmetrically about the circumference of the delivery tube.
- the distal end 364 of the delivery tube 360 may be brought into closer proximity to the bone hole 150 , even to the point of being partially inserted into the bone hole 150 . Insertion of the distal end 364 of the delivery tube 360 can be aided by the tapering of the distal end 364 resulting from the compression prongs 368 and distal slots 367 .
- FIGS. 6A through 6E show an example of the delivery tube according to an embodiment.
- Three distal slots 467 and three compression prongs 468 are formed in the distal end 464 of the delivery tube 460 .
- Measuring indicia 461 are visible in FIGS. 6B and 6C along the body of delivery tube 460 .
- the delivery tube 460 also has a slotted opening (push guide 469 ) formed along a substantial length of the delivery tube 460 .
- the push guide 469 can assist in pushing the woven retention device through the entirety of the delivery tube 460 until it woven retention device has fully exited the delivery tube 460 into the bone hole.
- the push guide 469 is contiguous with the proximal opening at the proximal end 462 of the delivery tube 460 . In other embodiments, the push guide 469 may be separated from the proximal opening on the proximal end 462 .
- the push guide 469 can also allow an operator of the delivery tube 460 to see a position of the woven retention device through the opening. Thus, the delivery tube 460 need not be made of a transparent material for using the measuring indicia 461 .
- FIGS. 7A and 7B show an embodiment in which the delivery tube 460 is outfitted with a push rod 270 having a rod lever 278 on or near the proximal end 272 of the push rod 270 .
- the rod lever 278 extends radially outward from the rod body 276 through the push guide 469 .
- An operator of the system can slide the rod lever 278 back and/or forth in the push guide 469 so that the push rod 270 may be easily movable along a substantial length of the delivery tube 460 by an operator of the system.
- the push rod 270 does not need to be long enough for the proximal end 272 of the push rod 270 to remain proximal to the proximal end 462 of the delivery tube 460 because the operator can maintain control of the push rod 270 via the push guide 469 .
- a more compact system is provided, saving both space and material costs.
- FIGS. 8A through 8E show examples of another embodiment of the system.
- the woven retention device 400 is fixed to a stopper 377 to which the push rod 370 is coupled.
- an unseen portion of the push rod 370 extends past stopper 377 to push the woven retention device 400 out of the delivery tube. Coupling between the push rod 370 and the stopper 377 is achieved by locking portion 379 .
- the push rod 370 can be de-coupled from the stopper 377 by a rotation of the push rod 370 about its longitudinal axis. After being decoupled, the push rod 270 can be at least partially retracted from the woven retention device 400 (see FIG. 8C ) so that a distal portion of the woven retention device can be cut.
- FIG. 8C also reveals part of the push rod 370 that was previously inside the woven retention device 400 when the push rod 370 was coupled to the stopper 277 .
- the rod lever 378 of the push rod 370 has a substantially planer surface that is perpendicular to the longitudinal axis of the push rod 370 .
- FIGS. 8A-8C also show how the compression prongs 468 of the delivery tube 460 can spread apart from one another when the woven retention device 400 is being pushed through them.
- the compression prongs 468 can be flexible to allow the woven retention device 400 to pass through the compression prongs 468 while also radially compressing the woven retention device 400 due to the inward bias of the compression prongs 468 .
- FIGS. 9A-9C show a packaging and preparation system for the woven retention device 100 according to an embodiment.
- the packaging 130 includes a backing card 131 on which the woven retention device 100 is mounted in mounting loops 132 a , 132 b .
- the backing card 131 may include two cards 131 a , 131 b that are movable relative to one another.
- the pullout card 131 b may be pulled out from the stationary card 131 a by pulling the pullout card 131 b in the pull tab area 138 .
- the mounting loop 132 b which is attached to the pullout card 131 b , also moves relative to the mounting loop 132 a , which is attached to the stationary card 131 a .
- one or more measuring indices 140 within the measurement windows 136 will move relative to a marker 142 of the stationary card 131 a .
- the measurement indicated by the marker 142 corresponds to a distance between a point on the woven retention device 100 indicated by a marker on the movable mounting loop 132 b and the distal tip (not shown) of the woven retention device 100 that is attached at the attachment portion 133 .
- a user of the woven retention device 100 cut the woven retention device 100 to any desired length using the measuring system provided on the packaging of the woven retention device 100 .
- the desired length is obtained in the measurement window 136
- the user can cut the woven retention device 100 where indicated by the marker on the movable mounting loop 132 b (e.g., a point indicated by the words “cut here” in FIGS. 9A-9C .
- the portion of the woven retention device 100 between the attachment portion 133 and the movable mounting loop 132 b may be inserted into a bone using other methods described herein.
- multiple measurement windows 136 are provided in the packaging system 130 .
- Each of the multiple measurement windows 136 may have measuring indices that are calibrated for woven retention devices of a certain type.
- the measurement windows 136 may each be calibrated for a woven retention device of a different size, diameter, or weave pattern.
- a first measurement window 136 a may have measuring indices calibrated for a small-diameter woven retention device 100 (e.g., 3.0 mm in diameter).
- a second window 136 b may have measuring indices calibrated for a medium-diameter woven retention device 100 (e.g., 5.0 mm in diameter).
- a third window 136 c may have measuring indices calibrated for a large-diameter woven retention device 100 (e.g., 9.0 mm in diameter). These diameters are given as examples only. The number of measuring windows 136 provided and the diameters or other properties used to differentiate the measuring scales are not limited to these examples.
- the packaging may also include mounting portions 134 for a push rod (not shown in FIGS. 9A-9C ).
- Examples of various embodiments of the packaging and retention device systems 230 a - 230 d are shown in FIGS. 10A-10D .
- the packaging system is shown in more detail in FIGS. 11A and 11B .
- the packing system 230 c has a similar construction to the embodiment shown in FIGS. 9A-9D .
- push rod 470 c is shown mounted in a push rod holder portion 234 .
- delivery tube 560 c is also included in the packaging 230 c , as well as two woven retention devices 300 c .
- Packaging 230 c also differs from the embodiment in FIGS.
- a movable mounting and cutting guide 232 extends over both woven retention devices so that both can optionally be measured and/or cut at the same time.
- the distal end 304 c is arranged on an opposite end of the woven retention devices 300 c , so the measuring indicia in measurement windows 136 correspond to a length between the distal end 304 c and the position of the movable mounting and cutting guide 232 .
- the woven retention devices 300 a , 300 b can be packaged within the delivery tubes 560 a , 560 b , respectively. This results in compact packaging and, in some embodiments, a woven retention device that can be immediately deployed from the delivery tube. Alternatively, even when packaged within the delivery tube, the woven retention device can be at least partially removed from the delivery tube for measuring and cutting.
- the push rod 470 a also has a bent portion 479 , which will be discussed further with respect to FIGS. 13-15 .
- packaging systems 230 d shows an embodiment in which a delivery tube 560 d is packaged with a straight push rod 470 d .
- the delivery tube 560 d and push rod 470 d may be reusable, while the woven retention device is not reusable because they are implanted into the patient.
- the woven retention device can be packaged separately from the delivery tube and/or push rod.
- the woven retention device can be packaged with one or both of the delivery tube and the push rod.
- the woven retention device can be pre-inserted into the delivery tube.
- FIGS. 11A and 11B show close-up views of packaging system 230 c according to one embodiment.
- the measurement windows 136 include two windows for two different scales: 136 ′, 136 ′′ for woven retention devices with diameters of 5.0 mm and 9.0 mm, respectively. Although a third measurement window is shown, no measuring indices are provided for that window in the example shown. However, measurement windows 136 ′ and 136 ′′ may be used for a different measuring scale corresponding to a woven retention device having a diameter of 3.0 mm, for example. It is contemplated that the two woven retention devices 300 c ′ and 300 c ′′ can have two different diameters, corresponding to the scales used in measurement windows 136 ′ and 136 ′′.
- woven retention device 300 c ′ may have a diameter of 5.0 mm
- woven retention device 300 c ′′ may have a diameter of 9.0 mm.
- the two separate lines of measuring indices 240 can be seen more clearly in FIG. 11B , which is shown with the pull out card 232 b partially pulled apart from the stationary card 231 a.
- FIG. 12 shows a variation on the embodiment of the packaging system 230 d from FIG. 10D .
- packaging system 230 d ′ includes delivery tube 560 d , and push rod 470 d , as well as woven retention device 300 d being pre-loading in the delivery tube 560 d .
- the push rod 470 d in the embodiment shown must be long enough to at least extend from one side of the delivery tube 560 d to the other side in order to push the woven retention device 300 d out of the delivery tube 560 d and into a bone of a patient. This long push rod 470 d results in a larger overall package.
- a delivery tube 560 a with a push guide 569 can provide an overall shorter package 230 a and push rod 470 a that is shorter in length.
- the push rod 470 a does not necessarily have to be longer than the delivery tube 560 a , because the push guide 569 allows the push rod 470 a to slide down the length of the delivery tube 560 a .
- the bent portion 479 of the push rod 470 a allows the handle 477 to remain outside of the delivery tube 560 a while the distal end 474 of the push rod 470 a pushes the woven retention device 300 inside the delivery tube 560 a.
- the push guide 569 can be seen more clearly in FIG. 14 , where the components of packaging system 230 a are separated.
- the push guide 569 may extend over only part of the length of the delivery tube 560 a .
- the push rod 470 a may be prevented from all the way through the distal opening of the delivery tube 560 a .
- the push guide 569 may extend over the entire length of the delivery tube 560 a in some embodiments.
- the length of the push guide 569 may be coordinated with the placement and length of the measuring indicia 461 so that the woven retention device 300 can be measured using the entire range of the measuring indicia 461 based on the distance the woven retention device 300 can be pushed by the push rod 470 a.
- FIG. 15 shows an embodiment of the parts from FIGS. 13 and 14 as they are used to push the woven retention device 300 through the delivery tube 560 a .
- the distal end 304 a of the woven retention device 300 is shown protruding from the delivery tube 560 a , as the woven retention device 300 passes through the compression prongs 468 formed by the distal slots 467 .
- Due to the bent portion 479 of the push rod and the push guide 569 the handle 477 is able to extend beyond the proximal opening 563 of the delivery tube 560 a , on an outside of the delivery tube 560 a .
- the embodiment shown in FIG. 15 provides a compact and sufficient kit and method of inserting a woven retention device into a bone.
- the distal tip of the woven retention devices may be closed, while in other embodiments the distal tip may have an opening with a smaller diameter than the proximal opening of the woven retention device.
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Abstract
A method of inserting a woven retention device into a bone hole includes providing a woven retention device with a tapered distal end and a proximal end to receive a fastener, providing a delivery tube with distal and proximal openings, and providing a push rod to push the woven retention device through the distal opening of the delivery tube. The delivery tube includes a compression portion over at least a distal end of the delivery tube. The method also includes positioning the distal opening of the delivery tube near an opening of the bone hole and advancing the woven retention device through the compression portion of the distal opening of the delivery tube and into the bone hole by pushing on an interior of the tapered distal end of the woven retention device using the distal end of the push rod.
Description
- The present invention relates generally to methods of using woven retention devices and systems. More specifically, the present invention relates to methods of preparing, inserting, and using woven retention devices in bone.
- In orthopedic surgery it is common to secure a bone screw to a patient's bone. Bone fracture repair is surgery to fix a broken bone using plates, nails, screws, or pins. It is common in the treatment of fractures to attach a plate to the bone utilizing bone screws. The resulting construct prevents motion of the fractured bone so that the bone can heal. Alternatively, one or more screws may be inserted across the break to hold it place.
- In the treatment of spinal disorders, pedicle screws are inserted into the patient's vertebrae to serve as anchor points that can then be connected with a rod. This construct prevents motion of the vertebral segments that are to be fused.
- In the treatment of detached tendons, screw-like tissue anchors are inserted into the patient's bone to serve as an anchor for the reattachment of the tendon.
- One complication with the use of bone screws is the loss of fixation or grip between the bone screw and the patient's bone. Another complication with the use of bone screws is the stripping of the hole in the bone when the bone screw is inserted. This results in the loss of purchase and holding strength of the bone screw.
- The presence of osteoporotic bone can increase the likelihood of complications by reducing the purchase or grip of the bone screw to the patient's bone, resulting in a loss of holding strength and loosening of the bone screw or pullout of the bone screw.
- Current solutions to secure bone screws have not adequately addressed screw failure and the underlying causes of screw failure. In addition, there exists a need for simple and effective methods of using and inserting such orthopedic devices and systems.
- According to an embodiment of the present invention, a method of inserting a woven retention device into a bone hole is provided. The method includes providing a woven retention device having a distal end that is tapered, a proximal end to receive a fastener, and a sleeve body between the distal and proximal ends. The method includes providing a delivery tube including a distal opening and a proximal opening, the distal opening having a compression portion over at least a distal end of the delivery tube. The method also includes providing a push rod having a distal end to push the woven retention device through the distal opening of the delivery tube. The method further includes positioning the distal opening of the delivery tube near an opening of the bone hole in a bone surface and advancing the woven retention device through the compression portion of the distal opening of the delivery tube and into the bone hole by pushing on an interior of the tapered distal end of the woven retention device using the distal end of the push rod.
- According to some embodiments, the delivery tube has a side wall opening. The push rod may be arranged such that at least a portion of the push rod passes within the side wall opening of the delivery tube when advancing the woven retention device through the distal opening. The delivery tube can have an end slot at a distal portion of the delivery tube, and may have three end slots at the distal portion of the delivery tube. In an embodiment, the woven retention device is advanced into the bone hole until the proximal end of the woven retention device is substantially flush with the bone surface.
- In an embodiment, the method further includes compressing the woven retention device at least near the distal opening of the delivery tube as the woven retention device is advanced through the distal opening, where the delivery tube includes a narrowed region near the distal opening for compressing the woven retention device. The narrowed region has an inner diameter that is less than an outer diameter of the sleeve body. The method may further include inserting the woven retention device into the delivery tube through a proximal opening of the delivery tube. In some embodiments, the method further includes inserting the fastener into the woven retention device through the proximal end of the woven retention device after the woven retention device is placed in the bone hole.
- In an embodiment, the method includes cutting the woven retention device, before inserting the woven retention device into the bone hole, to a desired length based on a depth of the bone hole. A proximal end portion of the woven retention device may be cut to achieve the desired length. The method according to some embodiments includes measuring a portion of the woven retention device to determine a location along a length of the woven retention device to perform the cutting. In some embodiments, the delivery tube includes indicia for measuring a desired length of the woven retention device, the indicia being on a wall of the delivery tube. The method can include measuring the desired length of the woven retention device using the indicia, and cutting the woven retention device to the desired length prior to inserting the woven retention device into the bone hole. The measuring of the desired length can include aligning the distal end of the woven retention device with the indicia indicating the desired length of the woven retention device, and also may include cutting a portion of the sleeve body that extends proximally to the proximal opening of the delivery tube. The method may also include measuring a desired length of the woven retention device using indicia provided on a packaging of at least one of the woven retention device, the delivery tube, and the push rod, and cutting the woven retention device to the desired length.
- According to some embodiments, the method of using the woven retention device includes compressing the woven retention device with a compressing portion of the delivery lumen while inserting the woven retention device into the bone hole. The method may include cutting off an excess portion of the woven retention device based on measuring the desired length of the woven retention device. The method may include positioning the distal opening of the delivery tube near an opening of the bone hole. The measuring may include aligning a distal end of the woven retention device with a measuring tool, where the excess portion of the woven retention device can include a portion near a proximal end of the woven retention device. The measuring tool may include indicia on the delivery tube, and the excess portion includes a portion proximal to a proximal end of the delivery tube. The measuring may be performed while the distal end of the woven retention device is within the delivery tube. In an embodiment, the measuring includes using a slidable measuring apparatus that can hold the woven retention device and output a distance based on a distance relationship between two ends of the slidable measuring apparatus.
- In an embodiment, a method of inserting a woven retention device into a bone hole includes positioning a distal opening of a delivery lumen near an opening of the bone hole, pushing the woven retention device through the distal opening using a push rod, a distal end of the push rod being arranged within the delivery lumen to push the woven retention device and at least a portion of a proximal end of the push rod remaining outside of the delivery lumen, and advancing the woven retention device to a desired depth within the bone hole using the push rod. In an embodiment, the portion of the push rod that remains outside of the delivery lumen is connected to a portion of the push rod that is within the delivery lumen via a slotted opening in a side wall of the delivery lumen. The method can also include applying a force to the portion of the proximal end of the push rod that remains outside of the delivery lumen to push the push rod.
- In some embodiments, the method includes compressing the woven retention device with a compressing portion of the delivery lumen while inserting the woven retention device into the bone hole. The method can include cutting off an excess portion of the woven retention device based on the measuring. The method may also include positioning the distal opening of the delivery tube near an opening of the bone hole. The measuring can include aligning a distal end of the woven retention device with a measuring tool. The method may also include where the excess portion of the woven retention device includes a portion near a proximal end of the woven retention device. The measuring tool can have indicia on the delivery tube, and the excess portion includes a portion proximal to a proximal end of the delivery tube. The measuring may be performed while the distal end of the woven retention device is within the delivery tube. In an embodiment, the method includes using a slidable measuring apparatus that is configured to hold the woven retention device and output a distance based on a distance relationship between two ends of the slidable measuring apparatus.
- According to an embodiment of the present invention, a method of inserting a woven retention device into a bone hole includes measuring a desired length of the woven retention device to be inserted into the bone hole, pushing the woven retention device through a distal opening of a delivery tube using a push rod, and advancing the woven retention device to a desired depth within the bone hole using the push rod.
- In some embodiments, the method includes cutting off an excess portion of the woven retention device based on the measuring. The method may include positioning the distal opening of the delivery tube near an opening of the bone hole. The measuring can include aligning a distal end of the woven retention device with a measuring tool. The method may also include where the excess portion of the woven retention device includes a portion near a proximal end of the woven retention device. The measuring tool can be indicia on the delivery tube, and the excess portion can be a portion proximal to a proximal end of the delivery tube. The measuring can be performed while the distal end of the woven retention device is within the delivery tube and can use a slidable measuring apparatus that is configured to hold the woven retention device and output a distance based on a distance relationship between two ends of the slidable measuring apparatus.
- Additional features, advantages, and embodiments of the invention are set forth or apparent from consideration of the following detailed description, drawings and claims. Moreover, it is to be understood that both the foregoing summary of the invention and the following detailed description are exemplary and intended to provide further explanation without limiting the scope of the invention as claimed.
- The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate preferred embodiments of the invention and together with the detailed description serve to explain the principles of the invention. In the drawings:
-
FIG. 1A shows an exploded view of a push rod, a woven retention device and a delivery tube that have not been pushed into each other, according to an embodiment of the invention, as well as the combination of the elements after the push rod has pushed the retention device through a portion of the delivery tube, according to an embodiment of the invention. -
FIG. 1B shows a delivery tube that is positioned near a bone hole and a retention device configured to be pushed through the delivery tube, according to an embodiment of the invention. -
FIG. 1C shows a partial cut-away view of a delivery tube that is positioned near a bone hole and a push rod pushing the retention device through the delivery tube, according to an embodiment of the invention. -
FIG. 2 shows a partial cut-away view of an implanted woven retention device with a screw being inserted after a retention device has been inserted into a bone hole, according to an embodiment of the invention. -
FIG. 3 shows a screw fully inserted into a woven retention device in a bone hole, according to an embodiment of the invention. -
FIG. 4 shows a delivery tube having measurement indicia that allows for measuring an appropriate length of the woven retention device, and cutting the excess amount of the retention device, according to an embodiment of the invention. -
FIG. 5A shows a woven retention device becoming compressed due to passing through the compression portion of the delivery tube, according to an embodiment of the invention. -
FIG. 5B shows a close-up view of delivery tube disposed partially in a bone hole, according to an embodiment of the invention. -
FIGS. 6A-6E show various views of a delivery tube with a measurement scale and a side wall opening on the delivery tube, according to an embodiment of the invention. -
FIGS. 7A and 7B show a slidable push rod and delivery tube with a measuring scale, according to an embodiment of the invention. -
FIGS. 8A-8E show a slotted delivery tube, push rod with a planar surface handle that is perpendicular to the longitudinal axis of the delivery tube, and a stopper coupled to the push rod inside the delivery tube, according to an embodiment of the invention. -
FIGS. 9A-9D show a packaging system with a slidable measuring mechanism for measuring and cutting the woven retention device, according to an embodiment of the invention. -
FIGS. 10A-10D show multiple packaging, delivery tubes and push rod embodiments, according to embodiments of the invention. -
FIGS. 11A and 11B show packaging elements of the woven retention device kit with the packaging including a measuring mechanism, according to an embodiment of the invention. -
FIG. 12 shows packaging elements of the woven retention device kit in a long form of the push rod, according to an embodiment of the invention. -
FIG. 13 shows packaging elements of the woven retention device kit with a push rod having an offset handle portion, according to an embodiment of the invention. -
FIG. 14 shows separated elements of the woven retention device kit shown inFIG. 13 , according to an embodiment of the invention. -
FIG. 15 shows the elements of the woven retention device kit ofFIG. 13 in an arrangement for inserting the woven retention device into a bone, according to an embodiment of the invention. - The devices, systems and methods described herein may be used in the area of orthopedics and, in particular, orthopedic repairs. These include various devices, systems and methods directed to fixing and/or retaining fasteners in orthopedic applications. Fixing or retaining fasteners to bone tissue is complicated by the underlining bone tissue. Understanding that an underlying cause of failure with internal fixation in bone tissue is the bone, the devices, systems and methods described herein provide for solutions that address the implant site. At the implant site, the hole and the bone benefit from an enhanced interface.
- The fixation and/or retention devices, systems and methods described herein maximize fixation and/or retention in the bone tissue, including, osteoporotic bone, bone of a poor quality, and mechanically poor bone in addition to healthy bone tissue. The fixation and/or retention devices, systems and methods described herein may be used with any type of fixation including any types of screws, pins, or other fasteners.
- The devices, systems and methods described herein enhance the interaction of a bone anchor to a bone hole to provide enhanced fixation. Additionally, the devices, systems and methods may repair the surface of the bone hole following damage to the bone hole as in the case of stripping of the hole in the bone when a bone screw is over-tightened. Also, the devices, systems and methods provide for an enhanced bone hole surface for the reattachment of tendons in, for example, anterior/posterior cruciate ligament repair procedures, rotator cuff repair procedures, etc. The devices enhance the surface of a bone hole to enhance fixation of a bone anchor to bone and permits bone ingrowth into its structure. The devices enhance the interaction between the surface of a bone hole and the fixation device. The devices interdigitate with the bony structure and interact with the fixation device. The device alone, as a single device, enhances the surface of a bone hole to enhance fixation of a bone anchor to bone and accommodates variations in the diameter and depth of the bone hole. The devices, systems and methods can enhance fixation without requiring the use of cement and/or adhesives. However, according to some embodiments, cements and/or adhesive can be used in addition to or in place of another bone anchor such as a screw, pin, or other orthopedic implant.
- Also described herein are methods of using these devices and systems, including methods of inserting fixation devices into a bone hole of a patient. The methods may use insertion tools, kits, and/or device or system packaging that aid a user of the fixation devices to achieve a desired placement and fit of the fixation device within the bone hole of the patient, in order to achieve optimal performance of the fixation device.
- Referring now to the figures,
FIGS. 1A , 1B, and 1C show examples of a woven retention device for inserting into abone hole 150 of abone 152 to interface with abone surface 154 in thebone hole 150.FIG. 1A shows twowoven retention devices Woven retention device 100 is shown in an exploded view with respect to adelivery tube 160 and pushrod 170 used for inserting the wovenretention device 100 intobone hole 150. The wovenretention device 100 includes aproximal end 102 with aproximal opening 103, adistal end 104 that is tapered 105 to adistal tip 106, and asleeve body 108 extending between the proximal anddistal ends proximal end 102 may be able to receive a fastener (not shown inFIG. 1A ) through theproximal opening 103. Thedelivery tube 160 also includes aproximal end 162 with aproximal opening 163, adistal end 164 with adistal opening 165, and atube body 166 extending between the proximal anddistal ends push rod 170 has aproximal end 172, a distal end 174 with adistal tip 175, and arod body 176. - In an embodiment, a method of inserting the woven
retention device 100 into thebone hole 150 includes pushing the wovenretention device 100 through thedelivery tube 160 using thepush rod 170. For example,FIG. 1A showswoven retention device 100′ being pushed through thedelivery tube 160 with thepush rod 170. In the embodiment shown, at least part of thepush rod 170 is inserted into thedelivery tube 160 through theproximal opening 163 of thedelivery tube 160, and thedistal tip 175 of thepush rod 170 exerts a force on an interior of the wovenretention device 100′ in at least thedistal end 104 of the wovenretention device 100′. It is contemplated that thetip 175 of thepush rod 170 may push on a distal-most interior wall of thedistal tip 106 and/or on at least a portion of the taperedportion 105. - In some embodiments, the distal tip of the push rod may be shaped to at least partially conform to a shape of the interior surface of the distal tip of the tapered portion of the woven retention device. For example, the distal tip of the push rod may be tapered or otherwise shaped to contact the inner surface of the woven retention device. In some embodiments, the distal tip of the woven retention devices may be closed, while in other embodiments the distal tip may have an opening with a smaller diameter than the proximal opening of the woven retention device. In a case where the distal end of the woven retention device is open, the diameter at the distal tip may be small enough so that the push rod does not extend through the opening when pushing the woven retention device through the delivery tube and into the bone hole.
- As shown in
FIG. 1A , thedelivery tube 160 may include acompression portion 168 at least at or near thedistal end 164 of thedelivery tube 160. Thecompression portion 168 can force the wovenretention device 100′ to radially contract as the wovenretention device 100′ is pushed through thedistal opening 165 with thepush rod 170. In some embodiments, thecompression portion 168 may be a portion of thedelivery tube 160 with an inner diameter that is smaller than an outer diameter of the wovenretention device 100′ when the wovenretention device 100′ is in a relaxed state. Further details of thecompression portion 168 according to some embodiments will be discussed further below. - According to an embodiment of the method of inserting a woven retention device into a bone, the
distal opening 165 of thedelivery tube 160 may be positioned at or near theopening 156 of thebone hole 150, as shown inFIG. 1B . As such, when the wovenretention device 100′ is pushed through thedelivery tube 160 and is compressed by thecompression portion 168, the wovenretention device 100′ can easily be inserted into thebone hole 150 due to the radially contracted state of the wovenretention device 100′ from thecompression portion 168. For example, the contracted state of the wovenretention device 100′ allows it to easily enter theopening 156 without being obstructed by the periphery of theopening 156. Also, by staying at least partially contracted even after passing through thecompression portion 168 and entering thebone hole 150, the wovenretention device 100′ can avoid obstructions in thebone hole 150 itself due to irregularities in thebone hole 150. According to some embodiments, the wovenretention devices compression portion 168, the relaxed state being one in which the wovenretention device FIG. 1B ) that is larger than a diameter dc (FIG. 1C ) when in the compressed state. - It is possible that the size of the
bone hole 150 may prevent the wovenretention devices bone hole 150 has an inner diameter that is smaller than an outer diameter of the woven retention device in the relaxed state. Nonetheless, the wovenretention device 100 will be biased to expand or return to the relaxed state. In one embodiment, the woven retention device can elastically expand and/or self-expand to the relaxed state. In expanding towards the relaxed state, the woven retention device will press against thebone surface 154 of thebone hole 150. It is also possible that thebone hole 150 has an inner diameter that is larger than the outer diameter of the woven retention device in a relaxed state. In such a case, the woven retention device may not fully contact thebone surface 154 of thebone hole 150 when the woven retention device is in the relaxed state. However, the woven retention device may transition to an expanded state when a fastener is later inserted into the woven retention device. Thus, in the expanded state, the woven retention device can provide the desired interaction between the fastener and the bone hole. Therefore, according to the properties of the woven retention device and thecompression portion 168 of thedelivery tube 160, a system and method may be provided which allows for easy insertion of the wovenretention device bone hole 150 while nonetheless ensuring the desired interaction between the woven retention device, the fastener, and thebone surface 154. - As shown in
FIG. 2 , the method according to some embodiments includes inserting afastener 180 into the wovenretention device 100 after the wovenretention device 100 is placed into thebone hole 150. In the embodiment shown inFIG. 2 , thefastener 180 is a bone screw. However, embodiments of the invention are not limited to bone screws, and other fasteners such as rods, pins, prosthetic devices, or other devices can be inserted into the wovenretention device 100. As shown inFIG. 3 , thefastener 180 may be inserted fully into the wovenretention device 100 such that aproximal end 182 of thefastener 180 is substantially flush with theproximal end 102 of the wovenretention device 100 or with the surface of thebone 152. - According to some embodiments, a method of inserting a woven retention device may include removing an excess portion of the woven
retention device 100 so that it fits as desired in a bone hole of a particular size.FIG. 4 shows an example of such an embodiment. The wovenretention device 100 is at least partially inserted into a measuringtube 260 that is equipped with a mechanism for measuring the wovenretention device 100. In this example, the measuring is accomplished using measuringindicia 261 on the side of the measuringtube 260. According to an embodiment of the method, the wovenretention device 100 is at least partially inserted into the measuringtube 260 until thedistal end 104 of the wovenretention device 100 reaches a desired position relative to the measuringindicia 261. The relative position of the wovenretention device 100 can be appreciated by the measuringtube 260 having aclear tube body 266. After the wovenretention device 100 is inserted to the desired position, a portion of thedistal end 104 of the wovenretention device 100 may be removed usingscissors 190, for example, as shown inFIG. 4 . In an embodiment, the wovenretention device 100 is cut at a point approximately level theproximal opening 263 of the measuringtube 260. Therefore, the measuringindicia 261 can be arranged such that the measuringindicia 261 measure a distance from theproximal opening 263 of the measuringtube 260 and, correspondingly, a length of the wovenretention device 100 from thedistal end 104 of the wovenretention device 100 to proximal opening 263 (or other position where the wovenretention device 100 is cut). - According to some embodiments, a portion of the
delivery tube 360 near thedistal end 364 includes one or moredistal slots 367 as shown inFIG. 5A . Thedistal slots 367 define one ormore prongs 368 at or near thedistal end 364 of thedelivery tube 360. The compression portion of thedelivery tube 360 can be formed from these compression prongs 368. For example, as shown inFIG. 5A , the compression prongs 368 are biased radially inward towards a longitudinal axis of thedelivery tube 360, thus forming a narroweddistal opening 365 of thedelivery tube 360. - According to some embodiments, there can be an odd number of
distal slots 367 on thedistal end 364 of thedelivery tube 360. An odd number can provide more circumferentially uniform compression of the woven retention device because the distal slots are not aligned with each other. An even number of slits would have the slots aligned if the slots are placed symmetrically about the circumference of the delivery tube. - As shown in
FIG. 5B , thedistal end 364 of thedelivery tube 360, according to an embodiment, may be brought into closer proximity to thebone hole 150, even to the point of being partially inserted into thebone hole 150. Insertion of thedistal end 364 of thedelivery tube 360 can be aided by the tapering of thedistal end 364 resulting from the compression prongs 368 anddistal slots 367. -
FIGS. 6A through 6E show an example of the delivery tube according to an embodiment. Threedistal slots 467 and threecompression prongs 468 are formed in thedistal end 464 of thedelivery tube 460. Measuringindicia 461 are visible inFIGS. 6B and 6C along the body ofdelivery tube 460. As shown inFIG. 6C , thedelivery tube 460 also has a slotted opening (push guide 469) formed along a substantial length of thedelivery tube 460. As discussed below, thepush guide 469 can assist in pushing the woven retention device through the entirety of thedelivery tube 460 until it woven retention device has fully exited thedelivery tube 460 into the bone hole. In some embodiments, thepush guide 469 is contiguous with the proximal opening at theproximal end 462 of thedelivery tube 460. In other embodiments, thepush guide 469 may be separated from the proximal opening on theproximal end 462. Thepush guide 469 can also allow an operator of thedelivery tube 460 to see a position of the woven retention device through the opening. Thus, thedelivery tube 460 need not be made of a transparent material for using themeasuring indicia 461. -
FIGS. 7A and 7B show an embodiment in which thedelivery tube 460 is outfitted with apush rod 270 having arod lever 278 on or near theproximal end 272 of thepush rod 270. Therod lever 278 extends radially outward from therod body 276 through thepush guide 469. An operator of the system can slide therod lever 278 back and/or forth in thepush guide 469 so that thepush rod 270 may be easily movable along a substantial length of thedelivery tube 460 by an operator of the system. Therefore, thepush rod 270 does not need to be long enough for theproximal end 272 of thepush rod 270 to remain proximal to theproximal end 462 of thedelivery tube 460 because the operator can maintain control of thepush rod 270 via thepush guide 469. Thus, a more compact system is provided, saving both space and material costs. -
FIGS. 8A through 8E show examples of another embodiment of the system. The wovenretention device 400 is fixed to astopper 377 to which thepush rod 370 is coupled. In an embodiment, an unseen portion of thepush rod 370 extendspast stopper 377 to push the wovenretention device 400 out of the delivery tube. Coupling between thepush rod 370 and thestopper 377 is achieved by lockingportion 379. Thepush rod 370 can be de-coupled from thestopper 377 by a rotation of thepush rod 370 about its longitudinal axis. After being decoupled, thepush rod 270 can be at least partially retracted from the woven retention device 400 (seeFIG. 8C ) so that a distal portion of the woven retention device can be cut.FIG. 8C also reveals part of thepush rod 370 that was previously inside the wovenretention device 400 when thepush rod 370 was coupled to the stopper 277. - The
rod lever 378 of thepush rod 370 has a substantially planer surface that is perpendicular to the longitudinal axis of thepush rod 370.FIGS. 8A-8C also show how the compression prongs 468 of thedelivery tube 460 can spread apart from one another when the wovenretention device 400 is being pushed through them. Thus, the compression prongs 468 can be flexible to allow the wovenretention device 400 to pass through the compression prongs 468 while also radially compressing the wovenretention device 400 due to the inward bias of the compression prongs 468. - Some embodiments may include additional systems for packaging, measuring, and preparing the woven retention device for use.
FIGS. 9A-9C show a packaging and preparation system for the wovenretention device 100 according to an embodiment. Thepackaging 130 includes abacking card 131 on which the wovenretention device 100 is mounted in mountingloops backing card 131 may include twocards pullout card 131 b may be pulled out from thestationary card 131 a by pulling thepullout card 131 b in thepull tab area 138. When thepullout card 131 b is pulled outwardly from thestationary card 131 a, the mountingloop 132 b, which is attached to thepullout card 131 b, also moves relative to the mountingloop 132 a, which is attached to thestationary card 131 a. As thepullout card 131 b is moved, one ormore measuring indices 140 within themeasurement windows 136 will move relative to a marker 142 of thestationary card 131 a. The measurement indicated by the marker 142 corresponds to a distance between a point on the wovenretention device 100 indicated by a marker on themovable mounting loop 132 b and the distal tip (not shown) of the wovenretention device 100 that is attached at theattachment portion 133. Therefore, according to some embodiments, a user of the wovenretention device 100 cut the wovenretention device 100 to any desired length using the measuring system provided on the packaging of the wovenretention device 100. For example, when the desired length is obtained in themeasurement window 136, the user can cut the wovenretention device 100 where indicated by the marker on themovable mounting loop 132 b (e.g., a point indicated by the words “cut here” inFIGS. 9A-9C . After cutting, the portion of the wovenretention device 100 between theattachment portion 133 and themovable mounting loop 132 b may be inserted into a bone using other methods described herein. - In some embodiments,
multiple measurement windows 136 are provided in thepackaging system 130. Each of themultiple measurement windows 136 may have measuring indices that are calibrated for woven retention devices of a certain type. For example, in an embodiment, themeasurement windows 136 may each be calibrated for a woven retention device of a different size, diameter, or weave pattern. In one embodiment, as shown inFIG. 9D , afirst measurement window 136 a may have measuring indices calibrated for a small-diameter woven retention device 100 (e.g., 3.0 mm in diameter). Asecond window 136 b may have measuring indices calibrated for a medium-diameter woven retention device 100 (e.g., 5.0 mm in diameter). Athird window 136 c may have measuring indices calibrated for a large-diameter woven retention device 100 (e.g., 9.0 mm in diameter). These diameters are given as examples only. The number of measuringwindows 136 provided and the diameters or other properties used to differentiate the measuring scales are not limited to these examples. - According to an embodiment, the packaging may also include mounting
portions 134 for a push rod (not shown inFIGS. 9A-9C ). Examples of various embodiments of the packaging and retention device systems 230 a-230 d are shown inFIGS. 10A-10D . The packaging system is shown in more detail inFIGS. 11A and 11B . Thepacking system 230 c has a similar construction to the embodiment shown inFIGS. 9A-9D . However, inpackaging system 230 c,push rod 470 c is shown mounted in a pushrod holder portion 234. In addition,delivery tube 560 c is also included in thepackaging 230 c, as well as twowoven retention devices 300 c. Packaging 230 c also differs from the embodiment inFIGS. 9A-9D because a movable mounting and cuttingguide 232 extends over both woven retention devices so that both can optionally be measured and/or cut at the same time. Thedistal end 304 c is arranged on an opposite end of the wovenretention devices 300 c, so the measuring indicia inmeasurement windows 136 correspond to a length between thedistal end 304 c and the position of the movable mounting and cuttingguide 232. - In some embodiments, as shown in
packaging systems retention devices delivery tubes push rod 470 a also has abent portion 479, which will be discussed further with respect toFIGS. 13-15 . - Also in
FIG. 10 ,packaging systems 230 d shows an embodiment in which adelivery tube 560 d is packaged with astraight push rod 470 d. Thedelivery tube 560 d and pushrod 470 d may be reusable, while the woven retention device is not reusable because they are implanted into the patient. Thus, it is contemplated that, in some embodiments, the woven retention device can be packaged separately from the delivery tube and/or push rod. Alternatively, the woven retention device can be packaged with one or both of the delivery tube and the push rod. When the woven retention device is included in the package with the delivery tube, the woven retention device can be pre-inserted into the delivery tube. By packaging the woven retention device within the delivery tube, a user of the system can avoid the step of inserting the woven retention device into the delivery tube. -
FIGS. 11A and 11B show close-up views ofpackaging system 230 c according to one embodiment. Themeasurement windows 136 include two windows for two different scales: 136′, 136″ for woven retention devices with diameters of 5.0 mm and 9.0 mm, respectively. Although a third measurement window is shown, no measuring indices are provided for that window in the example shown. However,measurement windows 136′ and 136″ may be used for a different measuring scale corresponding to a woven retention device having a diameter of 3.0 mm, for example. It is contemplated that the twowoven retention devices 300 c′ and 300 c″ can have two different diameters, corresponding to the scales used inmeasurement windows 136′ and 136″. Thus, inFIGS. 11A and 11B , wovenretention device 300 c′ may have a diameter of 5.0 mm, andwoven retention device 300 c″ may have a diameter of 9.0 mm. The two separate lines of measuringindices 240 can be seen more clearly inFIG. 11B , which is shown with the pull outcard 232 b partially pulled apart from thestationary card 231 a. -
FIG. 12 shows a variation on the embodiment of thepackaging system 230 d fromFIG. 10D . InFIG. 12 ,packaging system 230 d′ includesdelivery tube 560 d, and pushrod 470 d, as well as wovenretention device 300 d being pre-loading in thedelivery tube 560 d. Because nopush guide 469 is providing along the side wall of thedelivery tube 560 d, thepush rod 470 d in the embodiment shown must be long enough to at least extend from one side of thedelivery tube 560 d to the other side in order to push the wovenretention device 300 d out of thedelivery tube 560 d and into a bone of a patient. Thislong push rod 470 d results in a larger overall package. - In contrast, according to the embodiment shown in
FIG. 10A aspackaging system 230 a, and the embodiments shown inFIGS. 13-15 , adelivery tube 560 a with apush guide 569, as shown inFIG. 14 , can provide an overallshorter package 230 a andpush rod 470 a that is shorter in length. Thepush rod 470 a does not necessarily have to be longer than thedelivery tube 560 a, because thepush guide 569 allows thepush rod 470 a to slide down the length of thedelivery tube 560 a. Thebent portion 479 of thepush rod 470 a allows thehandle 477 to remain outside of thedelivery tube 560 a while thedistal end 474 of thepush rod 470 a pushes the wovenretention device 300 inside thedelivery tube 560 a. - The
push guide 569 can be seen more clearly inFIG. 14 , where the components ofpackaging system 230 a are separated. In some embodiments, thepush guide 569 may extend over only part of the length of thedelivery tube 560 a. In this way, thepush rod 470 a may be prevented from all the way through the distal opening of thedelivery tube 560 a. However, it is possible that thepush guide 569 may extend over the entire length of thedelivery tube 560 a in some embodiments. The length of thepush guide 569 may be coordinated with the placement and length of the measuringindicia 461 so that the wovenretention device 300 can be measured using the entire range of the measuringindicia 461 based on the distance the wovenretention device 300 can be pushed by thepush rod 470 a. -
FIG. 15 shows an embodiment of the parts fromFIGS. 13 and 14 as they are used to push the wovenretention device 300 through thedelivery tube 560 a. Thedistal end 304 a of the wovenretention device 300 is shown protruding from thedelivery tube 560 a, as the wovenretention device 300 passes through the compression prongs 468 formed by thedistal slots 467. Due to thebent portion 479 of the push rod and thepush guide 569, thehandle 477 is able to extend beyond theproximal opening 563 of thedelivery tube 560 a, on an outside of thedelivery tube 560 a. Thus, the embodiment shown inFIG. 15 provides a compact and sufficient kit and method of inserting a woven retention device into a bone. - The foregoing descriptions include examples of embodiments of the woven retention devices and tools for using and inserting the woven retention devices. However, variations in these devices and system are contemplated within the scope of the invention. For example, in some embodiments, the distal tip of the woven retention devices may be closed, while in other embodiments the distal tip may have an opening with a smaller diameter than the proximal opening of the woven retention device.
- Although the foregoing description is directed to the preferred embodiments of the invention, it is noted that other variations and modifications will be apparent to those skilled in the art, and may be made without departing from the spirit or scope of the invention. Moreover, features described in connection with one embodiment of the invention may be used in conjunction with other embodiments, even if not explicitly stated above.
Claims (27)
1. A method of inserting a woven retention device into a bone hole, the method comprising:
providing a woven retention device having a distal end that is tapered, a proximal end configured to receive a fastener, and a sleeve body between the distal and proximal ends;
providing a delivery tube including a distal opening and a proximal opening, the delivery tube having a compression portion over at least a distal end of the delivery tube;
providing a push rod having a distal end configured to push the woven retention device through the distal opening of the delivery tube;
positioning the distal opening of the delivery tube near an opening of the bone hole in a bone surface; and
advancing the woven retention device through the compression portion of the distal opening of the delivery tube and into the bone hole by pushing on an interior of the tapered distal end of the woven retention device using the distal end of the push rod.
2. The method according to claim 1 , wherein:
the delivery tube has a side wall opening, and
the push rod is arranged such that at least a portion of the push rod passes within the side wall opening of the delivery tube when advancing the woven retention device through the distal opening.
3. The method according to claim 1 , wherein the delivery tube has an end slot at a distal portion of the delivery tube.
4. The method according to claim 3 , wherein the delivery tube has three end slots at the distal portion of the delivery tube.
5. The method according to claim 1 , wherein the woven retention device is advanced into the bone hole until the proximal end of the woven retention device is substantially flush with the bone surface.
6. The method according to claim 1 , further comprising compressing the woven retention device at least near the distal opening of the delivery tube as the woven retention device is advanced through the distal opening.
7. The method according to claim 6 , wherein the delivery tube comprises a narrowed region near the distal opening for compressing the woven retention device, the narrowed region having an inner diameter that is less than an outer diameter of the sleeve body.
8. The method according to claim 1 , further comprising inserting the woven retention device into the delivery tube through a proximal opening of the delivery tube.
9. The method according to claim 1 , further comprising inserting the fastener into the woven retention device through the proximal end of the woven retention device after the woven retention device is placed in the bone hole.
10. The method according to claim 1 , further comprising:
cutting the woven retention device, before inserting the woven retention device into the bone hole, to a desired length based on a depth of the bone hole.
11. The method according to claim 10 , wherein the cutting comprises cutting off a proximal end portion of the woven retention device to achieve the desired length.
12. The method according to claim 10 , further comprising measuring a portion of the woven retention device to determine a location along a length of the woven retention device to perform the cutting.
13. The method according to claim 1 , wherein the delivery tube includes indicia for measuring a desired length of the woven retention device, the indicia being on a wall of the delivery tube.
14. The method according to claim 13 , further comprising:
measuring the desired length of the woven retention device using the indicia; and
cutting the woven retention device to the desired length prior to inserting the woven retention device into the bone hole.
15. The method according to claim 14 , wherein the measuring of the desired length comprises aligning the distal end of the woven retention device with the indicia indicating the desired length of the woven retention device.
16. The method according to claim 14 , wherein the cutting comprises cutting a portion of the sleeve body that extends proximally to the proximal opening of the delivery tube.
17. The method according to claim 1 , further comprising:
measuring a desired length of the woven retention device using indicia provided on a packaging of at least one of the woven retention device, the delivery tube, and the push rod; and
cutting the woven retention device to the desired length.
18. A method of inserting a woven retention device into a bone hole, the method comprising:
positioning a distal opening of a delivery lumen near an opening of the bone hole;
pushing the woven retention device through the distal opening using a push rod, a distal end of the push rod being arranged within the delivery lumen to push the woven retention device and at least a portion of a proximal end of the push rod remaining outside of the delivery lumen; and
advancing the woven retention device to a desired depth within the bone hole using the push rod,
wherein the portion of the push rod that remains outside of the delivery lumen is connected to a portion of the push rod that is within the delivery lumen via a slotted opening in a side wall of the delivery lumen, and
wherein the pushing of the woven retention device comprises applying a force to the portion of the proximal end of the push rod that remains outside of the delivery lumen.
19. The method according to claim 18 , further comprising:
compressing the woven retention device to a compressed state with a compressing portion of the delivery lumen while inserting the woven retention device into the bone hole.
20. The method according to claim 19 , further comprising:
expanding the woven retention device to a relaxed state from the compressed state.
21. The method according to claim 20 , wherein the expanding includes self-expanding the woven retention device.
22. A method of inserting a woven retention device into a bone hole, the method comprising:
measuring a desired length of the woven retention device to be inserted into the bone hole;
pushing the woven retention device through a distal opening of a delivery tube using a push rod; and
advancing the woven retention device to a desired depth within the bone hole using the push rod.
23. The method according to claim 22 , further comprising:
cutting off an excess portion of the woven retention device based on the measuring; and
positioning the distal opening of the delivery tube near an opening of the bone hole.
24. The method according to claim 23 , wherein the measuring comprises aligning a distal end of the woven retention device with a measuring tool, and
wherein the excess portion of the woven retention device comprises a portion near a proximal end of the woven retention device.
25. The method according to claim 24 , wherein the measuring tool comprises indicia on the delivery tube, and the excess portion comprises a portion proximal to a proximal end of the delivery tube.
26. The method according to claim 25 , wherein the measuring is performed while the distal end of the woven retention device is within the delivery tube.
27. The method according to claim 22 , wherein the measuring includes using a slidable measuring apparatus that is configured to hold the woven retention device and output a distance based on a distance relationship between two ends of the slidable measuring apparatus.
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-
2014
- 2014-09-16 US US14/487,895 patent/US20160074071A1/en not_active Abandoned
- 2014-09-16 US US14/487,951 patent/US9943351B2/en active Active
-
2015
- 2015-09-16 WO PCT/US2015/050483 patent/WO2016044455A1/en active Application Filing
- 2015-09-16 EP EP15841953.1A patent/EP3194796A1/en not_active Withdrawn
Cited By (8)
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US9585695B2 (en) | 2013-03-15 | 2017-03-07 | Woven Orthopedic Technologies, Llc | Surgical screw hole liner devices and related methods |
US9808291B2 (en) | 2014-08-05 | 2017-11-07 | Woven Orthopedic Technologies, Llc | Woven retention devices, systems and methods |
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US11376051B2 (en) | 2014-08-05 | 2022-07-05 | Woven Orthopedic Technologies, Llc | Woven retention devices, systems and methods |
US9943351B2 (en) | 2014-09-16 | 2018-04-17 | Woven Orthopedic Technologies, Llc | Woven retention devices, systems, packaging, and related methods |
US10555758B2 (en) | 2015-08-05 | 2020-02-11 | Woven Orthopedic Technologies, Llc | Tapping devices, systems and methods for use in bone tissue |
US11395681B2 (en) | 2016-12-09 | 2022-07-26 | Woven Orthopedic Technologies, Llc | Retention devices, lattices and related systems and methods |
Also Published As
Publication number | Publication date |
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US9943351B2 (en) | 2018-04-17 |
WO2016044455A1 (en) | 2016-03-24 |
US20160074072A1 (en) | 2016-03-17 |
EP3194796A1 (en) | 2017-07-26 |
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