WO2005122923A1 - A bone fixator - Google Patents

A bone fixator Download PDF

Info

Publication number
WO2005122923A1
WO2005122923A1 PCT/GB2005/002438 GB2005002438W WO2005122923A1 WO 2005122923 A1 WO2005122923 A1 WO 2005122923A1 GB 2005002438 W GB2005002438 W GB 2005002438W WO 2005122923 A1 WO2005122923 A1 WO 2005122923A1
Authority
WO
WIPO (PCT)
Prior art keywords
block
fixator
aperture
wires
wire
Prior art date
Application number
PCT/GB2005/002438
Other languages
French (fr)
Inventor
Trevor Bernard Buchanan Rule
Original Assignee
Trevor Bernard Buchanan Rule
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Trevor Bernard Buchanan Rule filed Critical Trevor Bernard Buchanan Rule
Publication of WO2005122923A1 publication Critical patent/WO2005122923A1/en

Links

Classifications

    • 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
    • A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
    • A61B17/64—Devices extending alongside the bones to be positioned
    • A61B17/6466—Devices extending alongside the bones to be positioned with pin-clamps movable along a solid connecting rod
    • A61B17/6475—Devices extending alongside the bones to be positioned with pin-clamps movable along a solid connecting rod the connecting rod being threaded
    • 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
    • A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
    • A61B17/66—Alignment, compression or distraction mechanisms
    • 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
    • A61B17/846—Nails or pins, i.e. anchors without movable parts, holding by friction only, with or without structured surface
    • A61B17/848—Kirschner wires, i.e. thin, long nails
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00831—Material properties
    • A61B2017/00902—Material properties transparent or translucent
    • A61B2017/00915—Material properties transparent or translucent for radioactive radiation

Definitions

  • the present invention relates to a bone fixator, for example of the type used to keep broken bones supported whilst they grow back together.
  • Bone fixators usually consist of a pair of blocks joined together with a shaft or screw thread.
  • the distance between the blocks can be varied, e.g. by releasing a grub screw that secures each block to the shaft, or by rotating a screw thread which passes through a threaded aperture in one of the blocks.
  • Each block is releasably secured to a pair of parallel wires that are driven into a bone, using a guide, by a surgeon. These parallel wires are called "K-wires".
  • Each block has a clamping plate to clamp the K-wires to the block.
  • the K- wires pass through a larger diameter aperture in the block and are secured by grub- screws.
  • fixators were not torsionally stable - that is they were prone to twisting once fitted - this sometimes led to complications and extended the time required for broken bones to heal.
  • AN aim of the present invention is to overcome the aforementioned problems by providing an improved fixator.
  • a fixator comprising: a first fixator block, a second fixator block, a support structure linking the first and second blocks together at a variable distance, and a pair of K-wires passing through an aperture in each block, one wire being supported such that its axis is at an angle with respect to the axis of other the other wire, both wires being substantially in at least one plane.
  • each pair of K-wires taper inwardly away from a block and cross over one another.
  • said one wire of each pair is supported at an angle to the other in two planes.
  • a fixator comprising: a first fixator block, a second fixator block, a support structure linking the first and second blocks together at a variable distance, and at least one K-wire passing through an aperture in each block, said aperture being of a diameter to ensure the K-wire forms a friction fit within the aperture.
  • a pair of K-wires each pass through an aperture in each block.
  • the support structure includes a threaded shaft having one end secured to a first block by a bearing allowing the shaft to rotate relative to the block, and the second block includes a threaded aperture through which the shaft passes, whereby rotation of the shaft varies the distance between the blocks.
  • one or more guide pins extend from the first block and pass through apertures in the second block thereby allowing the second block apertures to slide along the, or each guide pin(s). The or each guide pins provide torsional stability to the fixator.
  • the first or second block may be formed from two sub-blocks joined together.
  • Figure 1 shows a perspective view of one embodiment of a fixator
  • Figure 2 shows a cross section view of Figure 1.
  • Fixator 1 has a first fixator block 2 and a second fixator block 3. Extending from first block 2 is a threaded shaft 4 having one end 4A secured to the first block by a bearing collar 5. Bearing collar 5 is formed in a recess 2A in block 2, thereby allowing the shaft 4 to rotate relative to the block 2. As shown in the inset of Figure 2, the end 4A is a narrow projection which inserts into a narrow aperture 2B in block 2 with an annular collar 4B which engages in an annular recess 5A in collar 5 preventing withdrawal of shaft 4 from block 2.
  • an ⁇ shaft 4 passes through a threaded aperture 3A in block 3, an ⁇ shaft 4 includes a slotted end 4C to receive a screwdriver whereby rotation of the shaft 4 varies the distance between the blocks2 and 3, with one block to be moved relative to another. It is understood that end 4C may take other forms than slotted, e.g. with a square profile, in order to rotate shaft 4 with a tool other than a normal screwdriver.
  • a pair of guide pins 6A, 6B extend from the first block 2 and pass through apertures 3B.3C in the second block 3 allowing the second block 3 to slide along the guide pins.
  • Guide pins 6A, 6B give torsional stability to the fixator.
  • Shaft 4, and guide pins 6A, 6B provide a support structure linking the first and second blocks together at a variable distance.
  • K-wires 7A, 7B each pass through an aperture 8A, 8B in block 2
  • a pair of K-wires 9A, 9B each pass through an aperture 10A, 10B in block 2.
  • K-wires 7A, 7B and 9A, 9B are of a type well known in the art having a pointed end and threaded shaft as shown or a non-threaded shaft.
  • K-wire 7A is supported at an angle in relation to K-wire 7B in one plane as shown by arc "X” (see Figure 1), and K-wires 7A, 7B taper inwardly away from block 2 and cross over.
  • K-wire 7A is supported at an angle in relation to K-wire 7B in a second plane as shown by arc "Y" (see Figure 2).
  • K-wire 9A is supported at an angle in relation to K- wire 9B one plane as shown by arc "X” (see Figure 1), and K-wires 9A, 9B taper inwardly away from block 3 and cross over.
  • K-wire 9A is supported at an angle in relation to K-wire 9B in a second plane as shown by arc "Y” (see Figure 2).
  • Apertures 8A, 8B and 10A, 10B are of a diameter to ensure the K-wires 7A, 7B and 9A, 9B form a friction fit within the aperture.
  • the K-wires 7A, 7B and 9A, 9B can be drilled into bone (not shown) either side of a fracture or break or osteotomy.
  • the blocks 2, 3 serve as drill guides so obviating the need for a separate drill guide. Because the K-wires 7A, 7B and 9A, 9B are tapered as described above, so the blocks 2, 3 cannot fall off their respective K-wires. Also because the K-wires 7A, 7B and 9A, 9B are each angled in two planes, so each block, as spaced by the threaded shaft and guide pins, creates a fixator with a secure structure which is torsionally stable.
  • the fixator 1 can be made smaller if desired.
  • the fixator is also much lighter than previous arrangements.
  • Blocks 2 and 3 are preferably formed from a synthetic plastics material making them radio lucent.
  • the pitch of threaded shaft 4 may be designed so that one turn of the shaft moves the blocks towards or away from each other by a predetermined distance. This ensures that a surgeon or physiotherapist is able to move the blocks by a known axial distance by turning a thread a specific amount.
  • the invention may take a form different to that specifically described above.
  • the first or second block may be formed from two sub-blpcks joined together with each sub block having its own K-wires.
  • each pair of K-wires need not be supported in its block aperture with a friction fit, in which case the fixator will have one K-wire being supported at an angle in relation to the other K-wire in at least one plane.
  • a fixator comprising: a first fixator block, a second fixator block, a support structure linking the first and second blocks together at a variable distance, and a pair of K-wires passing through an aperture in each block, one wire being supported at an angle in relation to the other in at least one plane.
  • a fixator comprising: a first fixator block, a second fixator block, a support structure linking the first and second blocks together at a variable distance, and at least one K-wire passing through an aperture in each block, said aperture being of a diameter to ensure the K-wire forms a friction fit within the aperture.
  • the invention extends to a method of therapy that employs the present invention and to a method of treating a broken bone or osteomy.

Abstract

The present invention relates to a bone fixator, for example of the type used to keep broken bones supported whilst they grow back together. Bone fixators usually consisted of a pair of blocks joined together with a shaft or screw thread. Problem associated with existing fixators was that they were not radio lucent; the size of clamps and grub screws made it difficult to produce miniature fixators; and many fixators were prone to twisting once fitted - this sometimes led to discomfort, extending the time required for broken bones to heal. The invention overcomes these problems by providing a fixator comprising: a first fixator block (2), a second fixator block (3), a support structure (4) linking blocks (2 and 3) together at a variable distance, and a pair of K-wires (7 and 9) passing through an aperture (8 and 10) in each block, one wire being supported such that its axis is at an angle with respect to the axis of other the other wire, both wires being substantially in at least one plane.

Description

A Bone Fixator Background
The present invention relates to a bone fixator, for example of the type used to keep broken bones supported whilst they grow back together.
Prior Art
Bone fixators usually consist of a pair of blocks joined together with a shaft or screw thread. The distance between the blocks can be varied, e.g. by releasing a grub screw that secures each block to the shaft, or by rotating a screw thread which passes through a threaded aperture in one of the blocks. Each block is releasably secured to a pair of parallel wires that are driven into a bone, using a guide, by a surgeon. These parallel wires are called "K-wires".
Each block has a clamping plate to clamp the K-wires to the block. Alternatively the K- wires pass through a larger diameter aperture in the block and are secured by grub- screws.
A number of drawbacks exist with these known fixators. Firstly the K-wires need to be placed in the bone prior to fitting fixator blocks thereto. Subsequent to the K-wires having been fitted in the bone, it can be a fiddly task to fit the fixator blocks. Special tools may be needed to clamp the K-wires to the block. Alternatively clamps or grub screws have been used. The, or each, block, clamp or grub screw adds to the mass of the fixator arrangement. This can add to the discomfort of the person wearing the fixator.
Another problem associated with existing fixators was that they required a number of metal parts, which were not radiolucent. The result was that these radio opaque parts blocked views on X-rays.
Another problem has been that the size of clamps and grub screws made it difficult to produce miniature fixators.
Also many known fixators were not torsionally stable - that is they were prone to twisting once fitted - this sometimes led to complications and extended the time required for broken bones to heal.
AN aim of the present invention is to overcome the aforementioned problems by providing an improved fixator.
Summary of the invention
According to a first aspect of the present invention there is provided a fixator comprising: a first fixator block, a second fixator block, a support structure linking the first and second blocks together at a variable distance, and a pair of K-wires passing through an aperture in each block, one wire being supported such that its axis is at an angle with respect to the axis of other the other wire, both wires being substantially in at least one plane.
Preferably each pair of K-wires taper inwardly away from a block and cross over one another.
Advantageously said one wire of each pair is supported at an angle to the other in two planes.
According to a second aspect of the invention there is provided a fixator comprising: a first fixator block, a second fixator block, a support structure linking the first and second blocks together at a variable distance, and at least one K-wire passing through an aperture in each block, said aperture being of a diameter to ensure the K-wire forms a friction fit within the aperture.
Preferably a pair of K-wires each pass through an aperture in each block.
It will be understood that one or more features of the first aspect of the present invention may be present in the second aspect of the present invention. Similarly it will be understood that one or more features of the second aspect of the present invention may be present in the first aspect of the present invention. Preferably the support structure includes a threaded shaft having one end secured to a first block by a bearing allowing the shaft to rotate relative to the block, and the second block includes a threaded aperture through which the shaft passes, whereby rotation of the shaft varies the distance between the blocks. Preferably one or more guide pins extend from the first block and pass through apertures in the second block thereby allowing the second block apertures to slide along the, or each guide pin(s). The or each guide pins provide torsional stability to the fixator.
The first or second block may be formed from two sub-blocks joined together.
An embodiment of the invention will now be described, by way of example only, and with reference to the drawings in which:
Brief Description of the Figures
Figure 1 shows a perspective view of one embodiment of a fixator, and
Figure 2 shows a cross section view of Figure 1.
Detailed Description of Preferred Embodiments of the Invention
Referring to the drawings there is shown a fixator 1. Fixator 1 has a first fixator block 2 and a second fixator block 3. Extending from first block 2 is a threaded shaft 4 having one end 4A secured to the first block by a bearing collar 5. Bearing collar 5 is formed in a recess 2A in block 2, thereby allowing the shaft 4 to rotate relative to the block 2. As shown in the inset of Figure 2, the end 4A is a narrow projection which inserts into a narrow aperture 2B in block 2 with an annular collar 4B which engages in an annular recess 5A in collar 5 preventing withdrawal of shaft 4 from block 2.
Shaft 4 passes through a threaded aperture 3A in block 3, anά shaft 4 includes a slotted end 4C to receive a screwdriver whereby rotation of the shaft 4 varies the distance between the blocks2 and 3, with one block to be moved relative to another. It is understood that end 4C may take other forms than slotted, e.g. with a square profile, in order to rotate shaft 4 with a tool other than a normal screwdriver.
A pair of guide pins 6A, 6B extend from the first block 2 and pass through apertures 3B.3C in the second block 3 allowing the second block 3 to slide along the guide pins. Guide pins 6A, 6B give torsional stability to the fixator.
Shaft 4, and guide pins 6A, 6B provide a support structure linking the first and second blocks together at a variable distance.
A pair of K-wires 7A, 7B each pass through an aperture 8A, 8B in block 2, and a pair of K-wires 9A, 9B each pass through an aperture 10A, 10B in block 2. K-wires 7A, 7B and 9A, 9B are of a type well known in the art having a pointed end and threaded shaft as shown or a non-threaded shaft.
K-wire 7A is supported at an angle in relation to K-wire 7B in one plane as shown by arc "X" (see Figure 1), and K-wires 7A, 7B taper inwardly away from block 2 and cross over. K-wire 7A is supported at an angle in relation to K-wire 7B in a second plane as shown by arc "Y" (see Figure 2). Similarly K-wire 9A is supported at an angle in relation to K- wire 9B one plane as shown by arc "X" (see Figure 1), and K-wires 9A, 9B taper inwardly away from block 3 and cross over. K-wire 9A is supported at an angle in relation to K-wire 9B in a second plane as shown by arc "Y" (see Figure 2).
Apertures 8A, 8B and 10A, 10B are of a diameter to ensure the K-wires 7A, 7B and 9A, 9B form a friction fit within the aperture.
In use, the K-wires 7A, 7B and 9A, 9B can be drilled into bone (not shown) either side of a fracture or break or osteotomy. The blocks 2, 3 serve as drill guides so obviating the need for a separate drill guide. Because the K-wires 7A, 7B and 9A, 9B are tapered as described above, so the blocks 2, 3 cannot fall off their respective K-wires. Also because the K-wires 7A, 7B and 9A, 9B are each angled in two planes, so each block, as spaced by the threaded shaft and guide pins, creates a fixator with a secure structure which is torsionally stable. Because the K-wires 7A, 7B and 9A, 9B are a friction fit in the apertures 8A, 8B and 10A, 10B of blocks 2 and 3, no grub screws or clamps are required to secure the block to the K-wires. This means that the fixator 1 can be made smaller if desired. The fixator is also much lighter than previous arrangements.
Blocks 2 and 3 are preferably formed from a synthetic plastics material making them radio lucent.
The pitch of threaded shaft 4 may be designed so that one turn of the shaft moves the blocks towards or away from each other by a predetermined distance. This ensures that a surgeon or physiotherapist is able to move the blocks by a known axial distance by turning a thread a specific amount.
The invention may take a form different to that specifically described above. For example the first or second block may be formed from two sub-blpcks joined together with each sub block having its own K-wires.
Also each pair of K-wires need not be supported in its block aperture with a friction fit, in which case the fixator will have one K-wire being supported at an angle in relation to the other K-wire in at least one plane. Thus according to an alternative to the first aspect of the present invention there is provided a fixator comprising: a first fixator block, a second fixator block, a support structure linking the first and second blocks together at a variable distance, and a pair of K-wires passing through an aperture in each block, one wire being supported at an angle in relation to the other in at least one plane.
Similarly one K-wire need not be supported at an angle in relation to the other K-wire in at least one plane, but the fixator will have at least one K-wire passing through an aperture in each block, the aperture being of a diameter to ensure the K-wire forms a friction fit within the aperture. Thus according to an alternative to the second aspect of the invention there is provided a fixator comprising: a first fixator block, a second fixator block, a support structure linking the first and second blocks together at a variable distance, and at least one K-wire passing through an aperture in each block, said aperture being of a diameter to ensure the K-wire forms a friction fit within the aperture.
It will be appreciated that further modifications to the embodiments described, will be apparent to those skilled in the art, without departing from the scope of the present invention.
Similarly, where national law permits the invention extends to a method of therapy that employs the present invention and to a method of treating a broken bone or osteomy.

Claims

Claims 1. A fixator comprising: a first fixator block, a second fixator block, a support structure linking the first and second blocks together at a variable distance, and a pair of K-wires passing through an aperture in each block, one wire being supported at an angle in relation to the other in at least one plane.
2. A fixator comprising: a first fixator block, a second fixator block, a support structure linking the first and second blocks together at a variable distance, and at least one K-wire passing through an aperture in each block, said aperture being of a diameter to ensure the K-wire forms a friction fit within the aperture.
3. A fixator according to claim 1 wherein at least one K-wire passes through an aperture in each block, said aperture being of a diameter to ensure the K-wire forms a friction fit within the aperture
4. A fixator according to claim 2 wherein a pair of K-wires passes through an aperture in each block, one wire being supported at an angle in relation to the other in at least one plane.
5. A fixator according to any preceding claim wherein each pair of K-wires taper inwardly away from a block and cross over.
6. A fixator according to claim 1 or 2 wherein each pair of K-wires is supported at an angle to the other in two planes.
7. A fixator according to any preceding claim wherein a pair of K-wires each pass through an aperture in each block.
8. A fixator according to any preceding claim wherein the support structure includes a threaded shaft having one end secured to a first block by a bearing allowing the shaft to rotate relative to the block, and the second block includes a threaded aperture through which the shaft passes, whereby rotation of the shaft varies the distance between the blocks.
9. A fixator according to claim 8 wherein one or more guide pins extend from the first block and pass through apertures in the second block allowing the second block apertures to slide along the or each guide pins, the or each guide pin giving torsional stability to the fixator.
10. A fixator according to any preceding claim wherein the first or second block comprises two sub-blocks joined together.
11. A fixator according to any preceding claim wherein the fixator is formed from a synthetic plastics material.
12. A fixator according to any preceding claim wherein the fixator is formed from a radio transparent material.
13. A fixator substantially as herein described and with reference to the Figures.
14. A method of employing a fixator according to any of claim 1 to 13for assisting in the repair of a broken bone or osteomy.
PCT/GB2005/002438 2004-06-21 2005-06-21 A bone fixator WO2005122923A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0413822.8 2004-06-21
GB0413822A GB0413822D0 (en) 2004-06-21 2004-06-21 Bone fixator

Publications (1)

Publication Number Publication Date
WO2005122923A1 true WO2005122923A1 (en) 2005-12-29

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WO (1) WO2005122923A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013103709A1 (en) 2012-01-04 2013-07-11 3D Medical Concepts, Llc External fixation system
CN103829994A (en) * 2014-03-24 2014-06-04 阮冬睿 Shank shin bone outer fixing support for orthopedics department
WO2020014457A1 (en) * 2018-07-11 2020-01-16 Treace Medical Concepts, Inc. Compressor-distractor for angularly realigning bone portions
CN113598914A (en) * 2021-08-04 2021-11-05 广元市中心医院 Heel flap transplants postoperative strutting arrangement
US11607250B2 (en) 2019-02-13 2023-03-21 Treace Medical Concepts, Inc. Tarsal-metatarsal joint procedure utilizing compressor-distractor and instrument providing sliding surface
USD1011524S1 (en) 2022-02-23 2024-01-16 Treace Medical Concepts, Inc. Compressor-distractor for the foot
US11889998B1 (en) 2019-09-12 2024-02-06 Treace Medical Concepts, Inc. Surgical pin positioning lock

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2251209A (en) * 1940-02-17 1941-07-29 Stader Otto Bone splint
US4573459A (en) * 1983-08-25 1986-03-04 Litton Bruce W Thumb and finger extension device
US4730608A (en) * 1986-03-05 1988-03-15 Schlein Allen P External bone-anchoring fixator
EP0913128A2 (en) * 1997-11-03 1999-05-06 Gerrit Johannes Termaten Device for fixing bone sections relative to each other
US20020004659A1 (en) * 2000-04-28 2002-01-10 Fixano External fixator for immobilizing bone fragments, particularly in the area of the wrist

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2251209A (en) * 1940-02-17 1941-07-29 Stader Otto Bone splint
US4573459A (en) * 1983-08-25 1986-03-04 Litton Bruce W Thumb and finger extension device
US4730608A (en) * 1986-03-05 1988-03-15 Schlein Allen P External bone-anchoring fixator
EP0913128A2 (en) * 1997-11-03 1999-05-06 Gerrit Johannes Termaten Device for fixing bone sections relative to each other
US20020004659A1 (en) * 2000-04-28 2002-01-10 Fixano External fixator for immobilizing bone fragments, particularly in the area of the wrist

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013103709A1 (en) 2012-01-04 2013-07-11 3D Medical Concepts, Llc External fixation system
EP2800522A4 (en) * 2012-01-04 2015-08-26 3D Medical Exfix Llc External fixation system
CN103829994A (en) * 2014-03-24 2014-06-04 阮冬睿 Shank shin bone outer fixing support for orthopedics department
CN103829994B (en) * 2014-03-24 2016-02-03 曾行行 A kind of orthopaedics calf shank exterior fixation bracket
WO2020014457A1 (en) * 2018-07-11 2020-01-16 Treace Medical Concepts, Inc. Compressor-distractor for angularly realigning bone portions
EP3820387A4 (en) * 2018-07-11 2022-07-06 Treace Medical Concepts, Inc. Compressor-distractor for angularly realigning bone portions
US11596443B2 (en) 2018-07-11 2023-03-07 Treace Medical Concepts, Inc. Compressor-distractor for angularly realigning bone portions
US11607250B2 (en) 2019-02-13 2023-03-21 Treace Medical Concepts, Inc. Tarsal-metatarsal joint procedure utilizing compressor-distractor and instrument providing sliding surface
US11889998B1 (en) 2019-09-12 2024-02-06 Treace Medical Concepts, Inc. Surgical pin positioning lock
CN113598914A (en) * 2021-08-04 2021-11-05 广元市中心医院 Heel flap transplants postoperative strutting arrangement
USD1011524S1 (en) 2022-02-23 2024-01-16 Treace Medical Concepts, Inc. Compressor-distractor for the foot

Also Published As

Publication number Publication date
GB0413822D0 (en) 2004-07-21

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