US20200093530A1 - Stylet screw driver - Google Patents
Stylet screw driver Download PDFInfo
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- US20200093530A1 US20200093530A1 US16/581,711 US201916581711A US2020093530A1 US 20200093530 A1 US20200093530 A1 US 20200093530A1 US 201916581711 A US201916581711 A US 201916581711A US 2020093530 A1 US2020093530 A1 US 2020093530A1
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- United States
- Prior art keywords
- stylet
- screw driver
- screw
- assembly
- driver assembly
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- 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
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8875—Screwdrivers, spanners or wrenches
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1604—Chisels; Rongeurs; Punches; Stamps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- 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
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- 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
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
- A61B17/7076—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling for driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation
- A61B17/7082—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling for driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation for driving, i.e. rotating, screws or screw parts specially adapted for spinal fixation, e.g. for driving polyaxial or tulip-headed screws
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- 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
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
- A61B17/7083—Tools for guidance or insertion of tethers, rod-to-anchor connectors, rod-to-rod connectors, or longitudinal elements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/864—Pins or screws or threaded wires; nuts therefor hollow, e.g. with socket or cannulated
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- 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
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8802—Equipment for handling bone cement or other fluid fillers
- A61B17/8805—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it
- A61B17/8819—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it characterised by the introducer proximal part, e.g. cannula handle, or by parts which are inserted inside each other, e.g. stylet and cannula
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- 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
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8875—Screwdrivers, spanners or wrenches
- A61B17/8886—Screwdrivers, spanners or wrenches holding the screw head
- A61B17/8888—Screwdrivers, spanners or wrenches holding the screw head at its central region
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- 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
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8897—Guide wires or guide pins
Definitions
- the present invention relates generally to the field of surgery, and more specifically, to a stylet screw driver for use in spinal fusion surgery.
- spinal conditions including a fracture of a vertebra and a herniated disc
- spinal immobilization Several methods of spinal joint immobilization are known, including surgical fusion and the attachment of pins and bone plates to the affected vertebras with screws.
- the present invention is directed to a screw driver/ratcheting handle assembly which houses a stylet, pre-assembled to a set length based on the screw length in use, fixed in place by a spring loaded button mechanism located on the proximal end of the ratcheting handle.
- the spring loaded button mates with the stylet assembly, providing various stylet protrusion lengths.
- FIG. 1 is a perspective view showing a one embodiment of a stylet screw driver.
- FIG. 2 is a perspective view showing a stylet extending from the tip of a pedicle screw.
- FIG. 5 is a view showing the proximal ends of the stylet assembly and stylet screw driver handle with a spring loaded button mechanism.
- the present invention is a stylet screw driver which houses a stylet capable of translating via a rotatable handle.
- the stylet screw driver may include a screw driver/ratcheting handle assembly which houses a stylet, pre-assembled to a set length based on the screw length in use, fixed in place by a spring loaded button mechanism located on the proximal end of the ratcheting handle. The spring loaded button mates with the stylet assembly, providing various stylet protrusion lengths.
- FIG. 1 shows one embodiment of a stylet screw driver assembly 100 designed to deliver pedicle screws 105 into bone.
- the stylet screw driver assembly 100 includes a stylet screw driver 102 having a body 110 , a screw driver/ratcheting handle assembly 115 , and a stylet assembly 120 .
- the body 110 and handle 115 includes a central axial lumen in which the stylet assembly 120 is positioned.
- the stylet assembly 120 may be pre-assembled to a set length A based on the selected screw length so that a distal end or tip 130 extends distally from the pedicle screw 105 .
- the stylet assembly 120 may be fixed in place within the body 110 and handle 115 by a spring loaded button mechanism 125 located on a proximal end of the handle.
- the pedicle screw 105 may be part of a pedicle screw fixation system (PSFS) used for a variety of conditions that affect the spine.
- PSFS pedicle screw fixation system
- the pedicle screw may be a top loading screw having a U-shaped tulip 140 on a proximal end designed to hold rods, crosslinks, and rod connectors of the fixation system.
- the interior of the U-shaped tulip may be threaded.
- the distal end of the body 110 may include a threaded engagement feature 145 configured to engage the threads in the tulip 140 .
- the engagement feature 145 may further include a drive feature to engage a socket on the proximal end of the screw head to drive the pedicle screw 105 into the bone.
- the stylet assembly 120 includes a stylet 122 and screw length adjustment section 150 configured to set the stylet length.
- the stylet assembly 120 length is selected based on the screw length, so that the distal end or tip 130 extends a desired distance 135 distally from the pedicle screw 105 .
- the stylet assembly 120 may then be pre-assembled to the set length based on the screw length in use.
- FIG. 4 shows a plurality of slots 155 spaced apart at set distances to adjust the stylet assembly 120 to the desired distance.
- a stylet stop 157 is configured to be positioned in the slot 155 and engages the stylet 122 to stop at the selected length when it is inserted into the adjustment section 150 .
- the stylet 122 is then locked in place with a locking mechanism 160
- the slots 155 may include labels or features 165 proximate each slot to assist in selecting the appropriate slot for the desired length.
- the slots 155 may be labeled from 30-60 mm separated in 5 mm increments (30 mm at the top to 60 mm at the bottom).
- a screw length such as a 45 mm screw
- the stylet stop 157 is placed in the slot labeled 45 mm is used to fix the length of the stylet assembly 120 .
- the 45 mm screw 105 is then positioned on the distal end 145 and the stylet assembly 120 is pre-assembled with desired length of stylet 135 extending from the distal end.
- the stylet assembly 120 may be fixed in place within the body 110 and handle 115 by a spring loaded button mechanism 125 located on a proximal end of the handle. 115 . It may be desirable to make further adjustments of the stylet tip protrusion length 135 once the stylet screw driver assembly 100 is assembled.
- FIGS. 4 and 5 show the proximal portion of the stylet assembly 120 having a plurality of tip adjustment slots 170 spaced apart at set distances configured to engage the spring loaded button mechanism 125 on the proximal end of the handle. 115 .
- the stylet assembly 120 within the modular ratcheting handle is disengaged and the stylet assembly 120 may be moved to a new screw tip protrusion length 135 .
- the spring loaded button 125 is then released, locking stylet assembly 120 .
- the slots or groove 170 are configured to engage the spring loaded button mechanism 125 to lock the stylet assembly 120 in the desired position. Pushing the spring loaded button mechanism 125 disengages the stylet assembly 120 , which then can be moved axially relative to the handle 110 to a new slot 170 location. The spring loaded button mechanism 125 is then released and locks the stylet assembly 120 in the new position.
- the ability to adjust the length of the stylet assembly 120 provides various tip protrusion lengths which aid in guidance.
- the tip adjustment slots 170 may be include labels or features 175 in each slot to assist in selecting the appropriate slot for extending the desired length.
- the slots may be positioned with 3 mm spacing so that the distal tip 130 may be extended further distally in 3 mm increments.
- the stylet screw driver 100 may be used with a minimally invasive surgical (MIS) technique. Prior to use, the user determines the screw length desired for the procedure and attaches the desired pedicle screw to the distal end. Then the length of the stylet assembly 120 is adjusted for the selected screw length by moving the stylet 122 to the appropriate slot 155 of the adjustment section 150 , then locking the length using the locking mechanism 160 . The stylet tip 130 extends distally from the pedicle screw the appropriate length 135 . The stylet screw driver 100 is now pre-assembled with the correct stylet tip exposure for the selected screw length.
- MIS minimally invasive surgical
- the MIS process starts by opening the skin to access the bone to which the pedicle screw will be attached.
- the stylet screw driver assembly 100 is inserted through the opening and the stylet tip 130 is positioned proximate the bone at the desired location.
- the stylet tip 130 is then inserted into the bone by impacting or other known means.
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Surgical Instruments (AREA)
Abstract
A stylet screw driver assembly having a screw driver/ratcheting handle assembly which houses a stylet, pre-assembled to a set length based on the screw length in use, fixed in place by a spring loaded button mechanism located on the proximal end of the ratcheting handle. The spring loaded button mates with the stylet assembly, providing various stylet protrusion lengths.
Description
- This application claims the benefit of U.S. Provisional Application No. 62/735,820 filed Sep. 24, 2018, which is incorporated herein by reference.
- The present invention relates generally to the field of surgery, and more specifically, to a stylet screw driver for use in spinal fusion surgery.
- Certain spinal conditions, including a fracture of a vertebra and a herniated disc, indicate treatment by spinal immobilization. Several methods of spinal joint immobilization are known, including surgical fusion and the attachment of pins and bone plates to the affected vertebras with screws.
- The standard process leading up to screw insertion involves several steps that are time-consuming and cumbersome, especially when a large number of screws are to be inserted. Each step requires fluoroscopic imaging which increases the patient's exposure to radiation potentially causing dangerous complications and or negative long-term health effects.
- Thus, there is a need for an improved stylet screw driver that solves the problems listed above.
- The present invention is directed to a screw driver/ratcheting handle assembly which houses a stylet, pre-assembled to a set length based on the screw length in use, fixed in place by a spring loaded button mechanism located on the proximal end of the ratcheting handle. The spring loaded button mates with the stylet assembly, providing various stylet protrusion lengths.
-
FIG. 1 is a perspective view showing a one embodiment of a stylet screw driver. -
FIG. 2 is a perspective view showing a stylet extending from the tip of a pedicle screw. -
FIG. 3 is a perspective view showing a one embodiment of a stylet assembly. -
FIG. 4 is a perspective view showing the proximal end of the stylet assembly ofFIG. 3 . -
FIG. 5 is a view showing the proximal ends of the stylet assembly and stylet screw driver handle with a spring loaded button mechanism. - The present invention is a stylet screw driver which houses a stylet capable of translating via a rotatable handle. The stylet screw driver may include a screw driver/ratcheting handle assembly which houses a stylet, pre-assembled to a set length based on the screw length in use, fixed in place by a spring loaded button mechanism located on the proximal end of the ratcheting handle. The spring loaded button mates with the stylet assembly, providing various stylet protrusion lengths.
-
FIG. 1 shows one embodiment of a styletscrew driver assembly 100 designed to deliverpedicle screws 105 into bone. The styletscrew driver assembly 100 includes astylet screw driver 102 having abody 110, a screw driver/ratcheting handle assembly 115, and astylet assembly 120. Thebody 110 andhandle 115 includes a central axial lumen in which thestylet assembly 120 is positioned. Thestylet assembly 120 may be pre-assembled to a set length A based on the selected screw length so that a distal end ortip 130 extends distally from thepedicle screw 105. Thestylet assembly 120 may be fixed in place within thebody 110 and handle 115 by a spring loadedbutton mechanism 125 located on a proximal end of the handle. - The
pedicle screw 105 may be part of a pedicle screw fixation system (PSFS) used for a variety of conditions that affect the spine. The pedicle screw may be a top loading screw having aU-shaped tulip 140 on a proximal end designed to hold rods, crosslinks, and rod connectors of the fixation system. The interior of the U-shaped tulip may be threaded. - The distal end of the
body 110 may include a threaded engagement feature 145 configured to engage the threads in thetulip 140. The engagement feature 145 may further include a drive feature to engage a socket on the proximal end of the screw head to drive thepedicle screw 105 into the bone. - Setting Stylet Assembly Length
- The
stylet assembly 120 includes astylet 122 and screwlength adjustment section 150 configured to set the stylet length. Thestylet assembly 120 length is selected based on the screw length, so that the distal end ortip 130 extends a desireddistance 135 distally from thepedicle screw 105. Thestylet assembly 120 may then be pre-assembled to the set length based on the screw length in use. -
FIG. 4 shows a plurality ofslots 155 spaced apart at set distances to adjust thestylet assembly 120 to the desired distance. Astylet stop 157 is configured to be positioned in theslot 155 and engages thestylet 122 to stop at the selected length when it is inserted into theadjustment section 150. Thestylet 122 is then locked in place with alocking mechanism 160 - The
slots 155 may include labels or features 165 proximate each slot to assist in selecting the appropriate slot for the desired length. For example, theslots 155 may be labeled from 30-60 mm separated in 5 mm increments (30 mm at the top to 60 mm at the bottom). When a screw length is selected, such as a 45 mm screw, thestylet stop 157 is placed in the slot labeled 45 mm is used to fix the length of thestylet assembly 120. The 45mm screw 105 is then positioned on the distal end 145 and thestylet assembly 120 is pre-assembled with desired length ofstylet 135 extending from the distal end. - Adjusting Stylet Protrusion Lengths
- The
stylet assembly 120 may be fixed in place within thebody 110 and handle 115 by a spring loadedbutton mechanism 125 located on a proximal end of the handle. 115. It may be desirable to make further adjustments of the stylettip protrusion length 135 once the styletscrew driver assembly 100 is assembled. -
FIGS. 4 and 5 show the proximal portion of thestylet assembly 120 having a plurality oftip adjustment slots 170 spaced apart at set distances configured to engage the spring loadedbutton mechanism 125 on the proximal end of the handle. 115. By depressing the spring loadedbutton 125, thestylet assembly 120 within the modular ratcheting handle is disengaged and thestylet assembly 120 may be moved to a new screwtip protrusion length 135. The spring loadedbutton 125 is then released, lockingstylet assembly 120. - When the
stylet assembly 120 is positioned within thehandle 110, the slots orgroove 170 are configured to engage the spring loadedbutton mechanism 125 to lock thestylet assembly 120 in the desired position. Pushing the spring loadedbutton mechanism 125 disengages thestylet assembly 120, which then can be moved axially relative to thehandle 110 to anew slot 170 location. The spring loadedbutton mechanism 125 is then released and locks thestylet assembly 120 in the new position. The ability to adjust the length of thestylet assembly 120 provides various tip protrusion lengths which aid in guidance. - The
tip adjustment slots 170 may be include labels or features 175 in each slot to assist in selecting the appropriate slot for extending the desired length. For example, the slots may be positioned with 3 mm spacing so that thedistal tip 130 may be extended further distally in 3 mm increments. - Using The Stylet Screw Driver Assembly
- The
stylet screw driver 100 may be used with a minimally invasive surgical (MIS) technique. Prior to use, the user determines the screw length desired for the procedure and attaches the desired pedicle screw to the distal end. Then the length of thestylet assembly 120 is adjusted for the selected screw length by moving thestylet 122 to theappropriate slot 155 of theadjustment section 150, then locking the length using thelocking mechanism 160. Thestylet tip 130 extends distally from the pedicle screw theappropriate length 135. Thestylet screw driver 100 is now pre-assembled with the correct stylet tip exposure for the selected screw length. - The MIS process starts by opening the skin to access the bone to which the pedicle screw will be attached. The stylet
screw driver assembly 100 is inserted through the opening and thestylet tip 130 is positioned proximate the bone at the desired location. Thestylet tip 130 is then inserted into the bone by impacting or other known means. - In some embodiments, it may be desirable to adjust the exposed
stylet tip 130 for deeper insertion into the bone. This may be done by pushing the spring loadedbutton mechanism 125 to release thestylet assembly 120, and extending thestylet assembly 120 axially relative to the handle to extend thestylet tip 130 further distally. The extension distance may be selected using the labels or features 175 on thetip adjustment slots 170. Once thestylet tip 130 is at thenew length 135, release the loadedbutton mechanism 125 to lock thestylet assembly 120 in the desiredtip adjustment slot 170. - Once the
stylet tip 130 is advanced to the desired length or depth in the bone, the handle can be rotated to insert the pedicle screw into the bone. Thestylet screw driver 102 is disengaged from thescrew 105 and removed, leaving thepedicle screw 105 in place. - Example embodiments of the methods and systems of the present invention have been described herein. As noted elsewhere, these example embodiments have been described for illustrative purposes only and are not limiting. Other embodiments are possible and are covered by the invention. Such embodiments will be apparent to persons skilled in the relevant art(s) based on the teachings contained herein. Thus, the breadth and scope of the present invention should not be limited by any of the above-described exemplary embodiments but should be defined only in accordance with the following claims and their equivalents.
Claims (20)
1. A stylet screw driver assembly comprising:
a body having a proximal end, a distal end and a lumen therethrough, the distal end being configured to hold a pedicle screw;
a handle portion having a proximal end, a distal end and a lumen therethrough, the distal end being coupled to the body and the proximal end having a stylet adjustment mechanism; and
a stylet assembly having a pre-assembled stylet portion and a length adjustment portion configured for insertion in the lumen to engage the stylet adjustment mechanism.
2. The stylet screw driver assembly of claim 1 , wherein the length adjustment section is configured to adjust the stylet to a desired distance based on the screw length.
3. The stylet screw driver assembly of claim 2 , wherein adjustment of the stylet includes impacting the stylet to advance the stylet relative to the pedicle screw.
4. The stylet screw driver assembly of claim 1 , wherein the body includes a button mechanism configured to hold the stylet assembly in the body.
5. The stylet screw driver assembly of claim 4 , wherein the button mechanism is further configured to disengage the stylet to advance the stylet axially.
6. The stylet screw driver assembly of claim 5 , wherein advancement of the stylet includes disengagement of the button mechanism and impact the stylet to advance the stylet relative to the pedicle screw.
7. The stylet screw driver assembly of claim 4 , wherein the length adjustment section includes a plurality of slots configured to engage the button mechanism to stop the stylet at a selected distance.
8. The stylet screw driver assembly of claim 7 , wherein the plurality of slots include screw length labels proximate each slot.
9. The stylet screw driver assembly of claim 1 , wherein the handle includes a screw driver/ratcheting handle configured to rotate the screw.)
10. A stylet screw driver assembly comprising:
a stylet screw driver having a lumen and a distal end configured to couple with a screw, and
a stylet assembly having a stylet slidably positioned within the lumen, the stylet configured to extend distally from the distal end of the stylet screw driver.
11. The stylet screw driver assembly of claim 10 , further comprising a button mechanism coupled to the stylet screw driver configured to releasably engage the stylet assembly to stop the stylet at a selected distance.
12. The stylet screw driver assembly of claim 11 , wherein the button mechanism is further configured to disengage the stylet to advance the stylet axially.
13. The stylet screw driver assembly of claim 12 , wherein advancement of the stylet includes disengagement of the button mechanism and impact the stylet to advance the stylet relative to the pedicle screw.
14. The stylet screw driver assembly of claim 11 , wherein the stylet includes a plurality of slots configured to engage the button mechanism to stop the stylet at a selected distance.
15. The stylet screw driver assembly of claim 14 , wherein the plurality of slots include screw length labels proximate each slot.
16. The stylet screw driver assembly of claim 10 , further comprising a screw driver/ratcheting handle coupled to a proximal end of the stylet screw driver.
17. A method of using a stylet screw driver assembly comprising:
selecting a stylet screw driver assembly comprising:
a stylet screw driver having a body and handle portion with a lumen, a distal end of the body being configured to couple with a pedicle screw,
a stylet assembly having a stylet slidably positioned within the lumen, the stylet configured to extend distally from the distal end of the stylet screw driver;
selecting a desired pedicle screw having a screw length;
adjusting the stylet to extend distally for the selected screw length;
inserting a distal tip of the stylet into a bone;
rotating the stylet screw driver to screw the pedicle screw into the bone; and
disengaging the pedicle screw and remove the stylet screw driver assembly.
18. The method of claim 17 , wherein the screw driver assembly further comprising a button mechanism coupled to the stylet screw driver configured to releasably engage the stylet assembly, and adjusting of the stylet includes disengagement of the button mechanism.
19. The stylet screw driver assembly of claim 18 , wherein the stylet includes a plurality of slots configured to engage the button mechanism to stop the stylet at a selected distance.
20. The method of claim 17 , wherein adjusting of the stylet includes impacting the stylet to advance the stylet into the bone.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US16/581,711 US20200093530A1 (en) | 2018-09-24 | 2019-09-24 | Stylet screw driver |
US17/883,511 US11759246B2 (en) | 2018-09-24 | 2022-08-08 | Stylet screw driver |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US201862735820P | 2018-09-24 | 2018-09-24 | |
US16/581,711 US20200093530A1 (en) | 2018-09-24 | 2019-09-24 | Stylet screw driver |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US17/883,511 Continuation US11759246B2 (en) | 2018-09-24 | 2022-08-08 | Stylet screw driver |
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US20200093530A1 true US20200093530A1 (en) | 2020-03-26 |
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Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US16/581,711 Abandoned US20200093530A1 (en) | 2018-09-24 | 2019-09-24 | Stylet screw driver |
US17/883,511 Active US11759246B2 (en) | 2018-09-24 | 2022-08-08 | Stylet screw driver |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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US17/883,511 Active US11759246B2 (en) | 2018-09-24 | 2022-08-08 | Stylet screw driver |
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US (2) | US20200093530A1 (en) |
AU (1) | AU2019350722A1 (en) |
WO (1) | WO2020068879A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220142681A1 (en) * | 2020-11-12 | 2022-05-12 | Nuvasive, Inc. | Power modules and methods for bone anchor and stylet insertion |
EP4011306A1 (en) * | 2020-12-10 | 2022-06-15 | K2M, Inc. | Screw insertion instrument |
US11399877B2 (en) | 2018-12-20 | 2022-08-02 | Integrity Implants Inc. | Surgical guidance device |
WO2022187665A1 (en) * | 2021-03-05 | 2022-09-09 | Seaspine, Inc. | Bone anchor insertion device |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
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US5327906A (en) * | 1993-04-28 | 1994-07-12 | Medtronic, Inc. | Steerable stylet handle |
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2022
- 2022-08-08 US US17/883,511 patent/US11759246B2/en active Active
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US11399877B2 (en) | 2018-12-20 | 2022-08-02 | Integrity Implants Inc. | Surgical guidance device |
US11633223B2 (en) | 2018-12-20 | 2023-04-25 | Integrity Implants Inc. | Surgical guidance device |
US12042187B2 (en) | 2018-12-20 | 2024-07-23 | Integrity Implants Inc. | Surgical guidance device |
US20220142681A1 (en) * | 2020-11-12 | 2022-05-12 | Nuvasive, Inc. | Power modules and methods for bone anchor and stylet insertion |
EP4011306A1 (en) * | 2020-12-10 | 2022-06-15 | K2M, Inc. | Screw insertion instrument |
US20220183726A1 (en) * | 2020-12-10 | 2022-06-16 | K2M, Inc. | Screw Insertion Instrument And Methods Of Use |
WO2022187665A1 (en) * | 2021-03-05 | 2022-09-09 | Seaspine, Inc. | Bone anchor insertion device |
US11786278B2 (en) | 2021-03-05 | 2023-10-17 | Seaspine, Inc. | Bone anchor insertion device and methods of use |
Also Published As
Publication number | Publication date |
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AU2019350722A1 (en) | 2021-05-20 |
WO2020068879A1 (en) | 2020-04-02 |
US20220378488A1 (en) | 2022-12-01 |
US11759246B2 (en) | 2023-09-19 |
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