EP4468969A1 - Knochenankerelement zum einbringen in einen knochen und/oder fixieren von gewebe an dem knochen, einbringinstrument und knochenankersystem - Google Patents
Knochenankerelement zum einbringen in einen knochen und/oder fixieren von gewebe an dem knochen, einbringinstrument und knochenankersystemInfo
- Publication number
- EP4468969A1 EP4468969A1 EP23701294.3A EP23701294A EP4468969A1 EP 4468969 A1 EP4468969 A1 EP 4468969A1 EP 23701294 A EP23701294 A EP 23701294A EP 4468969 A1 EP4468969 A1 EP 4468969A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bone anchor
- anchor element
- distal
- bone
- opening
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/04—Surgical instruments, devices or methods for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/04—Surgical instruments, devices or methods for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0485—Devices or means, e.g. loops, for capturing the suture thread and threading it through an opening of a suturing instrument or needle eyelet
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/04—Surgical instruments, devices or methods for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
- A61B2017/0403—Dowels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/04—Surgical instruments, devices or methods for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
- A61B2017/0409—Instruments for applying suture anchors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/04—Surgical instruments, devices or methods for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
- A61B2017/0414—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors having a suture-receiving opening, e.g. lateral opening
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/04—Surgical instruments, devices or methods for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
- A61B2017/044—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors with a threaded shaft, e.g. screws
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/04—Surgical instruments, devices or methods for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
- A61B2017/0446—Means for attaching and blocking the suture in the suture anchor
- A61B2017/0458—Longitudinal through hole, e.g. suture blocked by a distal suture knot
Definitions
- Bone anchor element for insertion into a bone and/or fixing of tissue to the bone, insertion instrument and bone anchor system
- [02] has a continuous hollow space along the longitudinal center axis with a proximal end opening and a distal end opening, the proximal section having a profiled projection on the outside to prevent the bone anchor element introduced into the bone from being pulled off, the distal section being tubular at least at its distal end section and having a feed-through opening on the side at its proximal end section for the passage of a suture material, the feed-through opening being the opening at a distal end of the proximal section is connected to the through cavity via a partially exposed distal-side opening of the proximal section, and the partially exposed distal-side opening is surrounded by a face of the proximal section at the distal end.
- knotted When using a bone anchor , a distinction is usually made between knotted and knotless surgical techniques .
- a bone anchor is first placed in the bone with a preloaded suture material. The soft tissue torn off is then brought to its original position with this suture material and then knotted.
- the suture material is first passed through the torn soft tissue and then fixed in the bone with an unloaded anchor. In principle, these two surgical techniques can also be combined.
- US 2012/0053629 A1 describes a knotless suture anchor with a smooth distal nose and a tubular body, the suture anchor having a lateral passage for guiding a thread into the cavity of the tubular body and through its distal-side opening to the outside. Likewise, the loop of a threader can be pushed through this lateral opening.
- the associated introducer has a proximal slot for inserting the loop of the threader into the hollow shaft of the Introducer on, whereby the sling is guided outwards again over a ramp of the introducer through a distal slit before it enters the lateral passage of the suture anchor.
- a preloaded suture anchor for a knotted surgical technique is not disclosed in US 2012/0053629 A1.
- the object of the invention is to improve the state of the art .
- a bone anchor element for introducing into a bone and/or fixing tissue to the bone, the bone anchor element having a longitudinal center axis and, in a distal direction, a proximal end, a proximal section, a distal section and a distal end, and the bone anchor element having a continuous cavity along the longitudinal center axis from the proximal end to the distal end with a proximal end opening and a distal end opening wherein the proximal section has a profiled projection on the outside to prevent the bone anchor element introduced into the bone from being pulled off, the distal section being tubular at least at one of its distal end sections and at its proximal end section laterally has a through-opening for threading through, wherein the through-opening at a distal end of the proximal section is connected to the continuous cavity via a partially exposed distal-side opening of the proximal section, and the partially exposed distal-side opening is surrounded by an end
- a bone anchor element is thus provided which can be used multifunctionally in the knotted and / or knotless surgical technique . Due to the multifunctional design, the bone anchor element can be prefabricated and/or loaded with a suture material during an intervention, in particular outside of the body to be treated. Consequently, a wide range of applications and diverse functions can be covered with a single design of a bone anchor element.
- Rotator cuff, bi ceptenodesis, reconstruction of the Deltoid muscles, reconstruction of Bankart lesions, reconstruction of SLAP lesions, correction of the acromioclavicular joint rupture, can be used for capsule displacements and/or capsulolabral reconstructions.
- the bone anchor element By means of the collar with its at least one receiving surface and / or the feed - through opening , the bone anchor element provides several different options for guiding the thread , which can be flexibly and / or intraoperatively adapted and / or used for the respective desired application . Because of the versatile bone anchor element, it is not necessary to work out two or more concepts for use and loading as well as for placing the suture under the operation in advance.
- a pre-loading of the bone anchor element with a thread can be combined with an additional flexible loading with a second thread or other threads during the operation, so that a medial row can be realized with a knotted design of the bone anchor element and a lateral row with a knotless design of the bone anchor element.
- An essential idea of the invention is based on providing a bone anchor element which has both a feed-through opening and a collar on the outside with at least one slanted section on its distal section aligned receiving surface for the thread material, wherein the inclined receiving surface enables targeted guidance and sliding of the thread material.
- the bone anchor element can be flexibly pre-loaded manually and/or with a threading aid and/or during an operation due to the continuous hollow space, the feed-through opening and the collar arranged on the outside.
- the bone anchor element can be used not only for fixing a tendon in the shoulder and/or hip area, but also for a large number of other operations to fix soft tissue, such as ligaments, joint lips, rotator cuffs or torn capsules.
- a “bone anchor element” (also called “bone anchor”, “bone screw”, “suture anchor” or “interference screw”) is in particular an element for introducing into a bone and/or fixing tissue, in particular detached tissue, to the bone.
- a bone anchor is in particular an implant for anatomical fixation.
- the bone anchor has in particular a proximal section and a distal section ig or the two-part sections are firmly connected to one another.
- the bone anchor element has, in particular, a biointegrable material (PEEK), exhibit.
- the material of the bone anchor element is, in particular, transparent to X-rays and reliable in MRI (magnetic resonance imaging).
- the bone anchor element in the uniform design according to the invention can in particular be provided in different anchor sizes. In principle, the different size variants do not differ in terms of design, surgical technique, application and/or loading properties.
- Proximal is understood to mean the end of an object, such as the bone anchor element or an inserter, which is in the direction towards the body of the user and/or surgeon.
- distal end of the bone anchor element is introduced into the bone at a distance from the surgeon.
- a "longitudinal central axis" is understood in particular to mean that axis of the bone anchor element which corresponds to the direction of its greatest extension and/or dimension.
- a "proximal section” (also referred to as “proximal body”) has in particular a base body which is designed in the longitudinal direction along the longitudinal center axis as a hollow body and preferably as a hollow cylinder with a round cross section. Of course it can the proximal section can also have an oval, triangular, quadrilateral or polygonal cross-section.
- the proximal section has, in particular, the proximal terminal opening, which borders on the interior of the through cavity, which in turn is designed to be continuous up to the partially exposed distal-side opening of the proximal section. The proximal section transitions into the distal section at the partially exposed distal-side opening of the proximal section.
- the "cavity” (also called “lumen”) is in particular a hollow space inside the bone anchor element, which is guided from the proximal end opening along the longitudinal central axis to the distal end opening of the bone anchor element.
- the continuous hollow space can be designed, for example, as an axially continuous bore. However, this bore does not necessarily have to have a round cross section, but can also have a polygonal, such as hexagonal, cross section.
- a threading aid and/or a thread can run through the continuous hollow space.
- the entire body of the bone anchor element is cannulated through the continuous hollow space and thus enables blood to circulate after implantation.
- the proximal section has in particular at its
- a profiled Projection is, for example, a rib or several ribs.
- the rib or the ribs can be arranged on one side, circumferentially and/or offset.
- the profiled projection can also be designed as a thread.
- a continuous thread at the proximal end of the proximal section preferably begins on the outside with a flat threaded section and ends at the distal end of the proximal section, also flush with a flat threaded section.
- the bone anchor element is screwed in and/or hammered into the bone anchorable .
- the proximal section transitions into the distal section .
- the distal section is, in particular, of tubular design. If the distal section is tubular, it does not necessarily have to have a circular cross section, but can also have an oval, triangular, square and/or polygonal cross section.
- the distal section has a feed-through opening, in particular in its side wall, which is connected on the proximal side to the cavity of the proximal section and on the distal side to the cavity of the distal section up to the distal end opening.
- the distal section has a collar in particular on the outside, the collar having in particular a larger diameter than the tubular distal end section of the distal section.
- the collar thus represents a receiving part which is guided laterally adjacent to the partially exposed distal-side surface of the proximal section and/or laterally to the through-opening. In the distal direction, the collar in particular directly adjoins the profiled projection and/or the end face of the proximal section of the bone anchor element.
- the collar has in particular a receiving surface for a thread material oriented obliquely to the longitudinal center axis or a receiving surface oriented obliquely to the longitudinal center axis on both sides.
- the collar is preferably designed with a collar flank running obliquely all the way around the tubular distal section. This provides a specifically aligned receiving and sliding surface for a thread material.
- adjacent to is understood in particular to mean that the collar is arranged in the distal direction directly adjacent to the exposed distal-side opening, the last distal-side thread turn of the profiled projection and/or the end face of the proximal section.
- adjacent to is understood in particular to mean that the collar is arranged laterally outside the through-opening. Here can the collar can be arranged directly or at a distance from the opposing side walls of the through-opening.
- a "through-opening” is understood in particular as a continuous opening through a side wall of the distal section.
- the through-opening can in particular be a hole transverse to the central longitudinal axis of the bone anchor element in the distal section.
- the through-opening has in particular a dimension parallel to the central longitudinal axis and a transverse dimension transverse to the central longitudinal axis of the bone anchor element bertöf f Vietnamese in particular in front of the longitudinal center axis.
- a thread material is understood to mean in particular a surgical thread or several surgical threads.
- the thread material has in particular UHMWPE (Ultra-High-Molecular-Weight Polyethylene).
- a thread material can be, for example, two USP #2 threads or two suture tapes, for example with a width of 1.3 mm.
- “Loadable in a knot” is understood in particular to mean that the bone anchor element is unloaded, the thread material is first guided through a torn soft tissue and then fixed in the bone with the unloaded bone anchor element.
- “Loadable in a knotted manner” is understood in particular to mean that the bone anchor element is first preloaded with a thread material and is thus preloaded and/or is placed pre-assembled in the bone. The soft tissue that has been torn off is then brought into its original position with the thread or threads attached to the bone anchor element and knotted.
- the collar has a receiving surface on both sides of the partially exposed distal opening of the proximal section and at least partially on both sides of the feed-through opening in the distal direction.
- the receiving surfaces in the distal area of the bone anchor element which are oriented obliquely on both sides to the longitudinal central axis , serve as a sliding surface for preloaded sutures and thus , in particular , for a knotted surgical technique .
- the receiving surfaces on both sides which are oriented obliquely to the longitudinal center axis, run away obliquely from the through-opening to the opposite side of the through-opening.
- the inclined position of the geometry increases the loaded cross-section of the bone anchor element and thus improves the force distribution. This improved force distribution increases the mechanical stability of the bone anchor.
- the sloping collar with its sloping receiving and sliding surfaces on both sides protects the pre-loaded threads from damage when the bone anchor element is introduced into the core hole and/or drill hole in the Bone .
- the threads lie freely on the receiving surfaces of the sloping collar and can thus be manipulated by a doctor, as is necessary for the formation of knots.
- the collar is formed from a side wall of the through-opening radially around the distal section to an opposite side wall of the through-opening.
- a thread can be guided centrally around the partially radially surrounding collar and with its two thread ends through the feed - through opening into the cavity of the bone anchor element . Consequently, a thread can be guided radially circumferentially on the receiving surface of the collar, around the tubular end section of the distal section and in the proximal direction along the receiving surfaces on both sides, which are oriented obliquely to the longitudinal central axis.
- the collar is connected on both sides via a curve to the end face of the proximal section, so that a seat on both sides for the thread material is formed approximately parallel to the longitudinal center axis in the distal direction, followed in each case by the receiving surface oriented obliquely to the longitudinal center axis.
- a defined support surface and thus a seat for the suture material is provided on both sides, whereby the suture ends are held and guided by the respective seat through the feed-through opening into the cavity of the bone anchor element.
- the defined guidance and the fact that the thread material lies in the curve also prevents damage to and wear of the thread material when it is pulled through.
- the absorption surface and/or show the inclined absorption surface. to 80 °, especially from 30 ° to 60 °, preferred from 40 ° to
- the through-opening has four inside corners in a plan view.
- An "internal corner” is understood in particular to mean that the angle of the corner, viewed from the inside, is less than 180°.
- the internal corner is in particular a point at which two side walls of the distal section, which adjoin the inner through-opening, meet.
- the four inner corners of the through-opening each have a rounding.
- the through-opening has a square, rounded shape. Due to the radii in the inner corners of the square of the through-opening, the suture material can be drawn in better, for example with the help of a drawing-in aid, and then manipulated in order to provide a knotted surgical technique. Due to the design of the respective inside corner with a curve, a guided seat for guiding the thread through the feed-through opening, a defined position of the thread feed-through and a separate guidance of threads are also provided. In addition, the respective rounding of the Inside corner prevents damage and wear when moving and manipulating threads.
- Ring means in particular that the respective inside corner is not angular and/or designed with an acute angle, but rather as a rounding with a partial radius.
- the distal end , a distal end section of the distal section and / or the distal section tapers conically in the distal direction and / or is rounded .
- the bone anchor element can be optimally inserted into the prepared core hole in the bone and/or in the joint, and injury to the patient and/or damage to the bone anchor element during insertion is prevented. Due to the fact that the distal end section of the tubular distal section tapers conically in the distal direction, a
- the profiled projection is designed as a circumferential thread, which extends in the distal Direction at the distal end of the proximal section ver j üngt.
- the thread for example a cortical thread
- the thread has a conical inlet at its distal end
- the remaining thread is cylindrical up to the proximal end of the bone anchor element .
- a core diameter of the circumferential thread increases counter to the distal direction towards the proximal end of the proximal section .
- the "core diameter” is in particular the smallest diameter on a thread.
- the core diameter is in particular an imaginary cylinder (internal cylinder) which excludes the profile peaks of the thread.
- the proximal section has a plurality of perforation holes which are each arranged axially symmetrically to the longitudinal central axis and/or offset in the distal direction.
- a mechanical connection between the bone anchor and the bone is increased by the perforations on the surface of the bone anchor element and / or by its side walls .
- the perforations can be spaced at an angle of four times 90° and distributed around the outer surface of the bone anchor element, with the perforations and/or bores being preferably offset in the axial direction and thus along the longitudinal central axis of the bone anchor element in order to prevent a weakening of the anchor stability.
- An inserter also known as a driver
- a driver can be connected to the bone anchor element for inserting the bone anchor element into the drilled hole in the bone via the internal driving profile .
- Torque applied to the inserter and via the Internal driving profile are transferred to the bone anchor element for screwing and / or hammering into the bone.
- the internal entrainment profile is in particular guided from the proximal end to the distal end of the proximal section, the end face and/or the breakthrough opening in the distal section.
- the hexagon socket profile has, in particular, a width across flats of 2.75 mm.
- the internal entrainment profile is formed in particular at least at the proximal opening in the distal direction along the longitudinal center axis in the inner wall of the proximal section around the continuous cavity.
- the internal driver profile can also be configured only in the initial area of the continuous cavity of the proximal section.
- the bone anchor element has an anti-rotation element at its proximal end and/or at the proximal end opening.
- the bone anchor element is prevented from twisting relative to the insertion element, for example while it is being screwed into the bone.
- the bone anchor element is connected to the insertion instrument in a defined alignment and as a result the wire loop of a threader can always be pushed through the feed-through opening in a targeted manner on the same side of the distal section.
- the object is achieved by an insertion instrument for inserting a bone anchor element into a drill hole in a bone, the insertion instrument having a tool shank in a longitudinal direction, a handle being arranged on a proximal end of the tool shank and a driver profile for connection to the bone anchor element being arranged in an opposite, distal end section and the tool shank having a continuous hollow space in the longitudinal direction, the tool shank having a spiral-shaped indentation along the longitudinal direction on its proximal section , wherein the spiral-shaped recess is connected to the continuous cavity, so that when the insertion instrument is connected to the bone anchor element, a thread material can be inserted into the continuous cavity by means of the spiral-shaped recess or guided out of the continuous cavity and/or can be tensioned by rotating the insertion instrument.
- an insertion instrument is provided, with which a previously described bone anchor element after connecting the distal end of the inserter to the proximal section of the bone anchor element in a Borehole introduced within a bone and can be anchored there by hammering and/or screwing.
- an insertion instrument with a helical thread exit and / or entry is provided . Due to the spiral-shaped groove as a guide for the thread, if the thread is held taut while the bone anchor element is being screwed in, it is guided further upwards by the insertion instrument into the groove windings and is thus tensioned. The tension of the thread is thus maintained, adjusted and/or can be adjusted in a targeted manner during insertion. This prevents the thread from being wound around the outside of the shaft of the inserter when the bone anchor is being screwed in, which would result in undesired tension and the user first having to unwind the thread before the thread can be used again.
- a "insertion instrument” (also called “insertor”) is in particular a tool for inserting a bone anchor into a drilled hole in a bone.
- the insertion instrument can already be prefabricated with a thread or the thread is threaded through after the bone anchor element has been connected to the inserter.
- the insertion instrument and/or a threader can thus be used for knotless and knotted loading of the bone anchor.
- the insertion instrument has a handle, for example made of plastic, in particular at the proximal end, and a driver profile is arranged at the distal end.
- the insertion instrument is intended in particular for single use and is discarded after use.
- the insertion instrument is therefore in particular a sterile single-use product.
- the tool shank of the consignor is preferably electropolished and passivated .
- the tool shank is designed partially or completely as a hollow shank, with the hollow space being connected to the spiral-shaped recess.
- the length of the tool shank and/or the spiral-shaped recess is/are adaptable in particular to the intended use.
- the tool shank for a hip operation is 80 mm longer than for a shoulder operation.
- the tool shank can also have a different diameter, depending on the application.
- the insertion instrument can preferably be used universally for different sizes of bone anchor elements.
- a "spiral depression” (also called a spiral groove) is in particular a cutout in the longitudinal direction of the tool shank in the area of its proximal and/or distal section, with the cutout going through from the outside into the interior cavity of the tool shank.
- Bone hole is a hole made in the bone by drilling, hammering in, or in some other way.
- the insertion instrument has in particular an anti-twist element, so that when the insertion instrument is connected to a bone anchor element by means of the driver profile, the connected bone anchor element cannot twist
- the marking for example a circumferential laser marking, shows the user the maximum insertion depth directly when screwing in the bone anchor element.
- the handle has a recess and/or a coil for receiving a thread material.
- the insertion instrument loaded with a thread material and / or a bone anchor element can be provided already prefabricated .
- the two ends of the thread can be received in the recess or in several recesses of the handle of the insertion instrument and/or wound onto its spool.
- the thread ends are preferably guided flush and close-fitting at the side of the handle in the longitudinal direction to the proximal end.
- the coil for winding up protruding thread material is preferably formed at the proximal end of the handle.
- the object is achieved by a bone anchor system with a bone anchor element as described above and an insertion instrument as described above, so that the insertion instrument can be connected to the bone anchor element, a thread material can be flexibly threaded through the bone anchor element and/or the bone anchor element can be inserted into a drill hole in a bone using the insertion instrument.
- a "wire loop” (also called an eyelet) is understood to mean in particular a loop of wire.
- a wire loop can also be a metal loop and/or metal eyelet.
- a wire loop can in particular be a loading wire bent into a loop.
- a wire loop is also understood to mean a suture thread bent into a loop.
- the wire loop is in particular at the end of a wire or seam that is bent back thread, whereby the two wire ends or suture thread ends are held together by the threader, are attached to this or otherwise, for example manually, are held together.
- the threader also called threading aid or pull-in aid
- it has a finger grip, particularly at its proximal end.
- a thread material accommodated in the wire loop of the threader can be guided through the bone anchor element and the hollow tool shaft of the insertion instrument, with the thread then emerging from the spiral-shaped groove.
- This subsequent loading of the bone anchor element usually takes place outside of the joint and/or bone.
- the bone anchor system has at least one thread material in a further embodiment, the insertion instrument being connected to the bone anchor element, the thread material having two thread ends and being arranged on the outside of the collar of the bone anchor element, the two thread ends through the through-opening inwards in the proximal direction through the continuous cavity of the proximal section of the bone anchor element, the cavity of the tool shank of the insertion instrument and are guided outwards through the spiral-shaped recess of the insertion instrument and/or are attached to the handle of the insertion instrument, so that there is a prefabricated bone anchor system.
- Bone anchor system provided with which the refixation of soft tissue can be realized in different ways and through different approaches with a single bone anchor element and a single bone anchor system.
- reconstructions and a correction of instabilities for rotator cuffs can be realized in different ways.
- the object is achieved by a method for assembling a bone anchor system using a bone anchor element as described above and an insertion instrument as described above or using a bone anchor system as described above, with the following steps:
- the object is achieved by a method for preloading a bone anchor element of a bone anchor system, using a bone anchor element described above and an insertion instrument described above, or using a bone anchor system described above, with the following steps:
- Figure 1 is a perspective view of a
- Figure 2 is a perspective view of the
- Figure 3 is a perspective view of the
- FIG. 4 shows a perspective representation of a distal end of the bone anchor in a plan view
- FIG. 5 shows a perspective representation of a proximal end of the bone anchor in a plan view
- Figure 6 is a perspective view of a
- Figure 7 is a perspective view of a
- FIG. 8 shows a perspective representation of a prefabricated bone anchor system in a side view
- Figure 9 is a perspective view of a
- Figure 10 is a longitudinal section through a
- Bone anchor connected to the inserter's tool shaft with a loaded suture from the prefabricated bone anchor system
- Figure 11 is a perspective view of the
- FIG. 12 is a perspective view of the prefabricated bone anchor system being screwed into a model bone
- FIG. 13 is a perspective view of the prefabricated bone anchor system when the inserter is pulled out
- Figure 14 is a perspective view of the
- Bone anchor introduced into the model bone
- Figure 15 is a perspective view of a
- Figure 16 is a perspective view of the distal portion of a tool shank of the inserter with the connected bone anchor and pushed-through eyelet with suture from Figure 15,
- Figure 17 is a perspective view of the
- Figure 18 is a perspective view of the
- Figure 19 is a perspective view of the
- Figure 20 is a perspective view of the
- Figure 21 is a perspective view of the
- FIG. 22 shows a perspective representation of the bone anchor introduced into a drilled hole in the model bone.
- a bone anchor 101 has a longitudinal central axis 113 , a proximal section 107 followed by a distal section 109 being arranged in the distal direction 111 from its proximal end 103 to its distal end 105 ( see FIGS . 1 to 3 ) .
- the bone anchor 101 has a continuous longitudinal bore 117 from a proximal end opening 119 to a distal end opening 121 (see Figure 4 and
- a continuous, circumferential thread 115 is arranged on the outside along the proximal section 107 and ends flat with a thread trough at the proximal end 103 and at the distal end of the proximal section 107 .
- a core diameter 145 of the thread 115 is constant in the distal and central area of the proximal section 107 and increases counter to the distal direction 111 towards the proximal end 103, which increases compression when the bone anchor 101 is introduced into a bone and thereby improves fixation.
- the proximal section 107 has several perforation holes 139 in the thread valleys, which are regularly spaced across a cross-sectional surface and lateral surface of the proximal section 107 in the distal direction 111 in order to improve later ingrowth of a bone into the bone anchor 101 .
- the distal section 109 of the bone anchor 101 is tubular and tapers slightly in the distal direction 111 to the distal end 105 .
- the distal section 109 has a rounding 137 around the distal end opening 121 . Both favor an introduction of the bone anchor 101 into a bone.
- the distal section 109 has a feed-through opening 123 in its side wall, which is formed with two opposing side walls 129 both transversely to the longitudinal center axis 113 and along the longitudinal center axis 113 . Due to the feed-through opening 123 , an end face 143 of the proximal section 107 is partially exposed and the feed-through opening 123 is connected to the inner longitudinal bore 117 .
- the feed-through opening 123 is rectangular with four inside corners 133, each inside corner 133 being rounded with a rounding 135 in order to guide a thread without damaging it.
- the distal section 109 has a peripheral collar 125 , which has two inclined sliding surfaces 127 on both sides at an angle of 45 ° to the longitudinal center axis 113 .
- the collar 125 is formed circumferentially around the tubular area of the distal section 109 on a side opposite the feed-through opening 123 .
- the two sliding surfaces 127 on both sides of the collar 125 are each connected to the end face 143 in the proximal direction via a thread seat 131 .
- the respective thread seat 131 is formed approximately parallel to the longitudinal central axis 113 in its central region in order to ensure a secure fit of a thread.
- the proximal section 107 has a hexagon socket profile 141 on the inside (see FIG. 5), which is guided from the proximal terminal opening 119 to the area of the end face 143, with the bone anchor 101 being able to be connected to an inserter 201 via the hexagon socket profile 141.
- the inserter 201 for knotless and knotted loading of the bone anchor 101 has a handle 207 with a receiving slot 215 formed in a longitudinal direction 205 .
- the handle 207 has a thread spool 211 at its proximal end.
- a hollow shaft 203 is arranged at the distal end of the handle 207 .
- the hollow shaft 203 of the introducer 201 has a spiral groove 209 along the longitudinal direction 205 in its proximal area.
- An external hexagon profile section 213 for connection to the internal hexagon profile 141 of the bone anchor 101 is arranged at the distal end of the hollow shaft 203 (see FIG. 6).
- the cross section of the external hexagonal profile section 213 has a width across flats of 2.75 mm.
- a threader 301 has a finger grip 303 and a wire section 307 adjoining it on the distal side with an eyelet 305 at its distal end .
- a prefabricated bone anchor system 400 has a bone anchor 101 preloaded with a thread 223 , which is connected to the external hexagon profile section 213 of the hollow shank 203 of the inserter 201 by means of its internal hexagon profile 141 .
- a thread 223 For preloading the bone anchor 101, an eyelet 305 with the wire section 307 of the threader 301 has been pushed from the outside through the spiral groove 203 into the cavity 239 of the hollow shaft 203 until the eyelet 305 protrudes through the through-opening 123 to the outside.
- the thread 223 has been placed radially in the middle on the collar 125 of the bone anchor 101 and in the proximal direction on both sides on the sliding surfaces 127 .
- This prefabricated bone anchor system 400 can then be used for a knotted surgical technique .
- the preloaded bone anchor 101 is screwed into a prepared core hole 231 by a user using the inserter 201 in a screwing direction 235 (see FIG. 12).
- a model bone 221 is shown symbolically in FIG. 12 and the following figures in order to explain the functional principle of the insertion.
- the bone anchor 101 preloaded with the thread 223 is screwed into the core hole 231 in the model bone 221 up to the marking 219 .
- the first thread end 225 and the second thread end 227 of the thread 223 are then manually released by the user from the receiving slot 215 of the handle 207 of the inserter 201 and the inserter 201 is pulled upwards in a pulling direction 233 out of the bone anchor 101 screwed into the model bone 221 (FIG. 13).
- the first thread end 225 and the second thread end 227 run through the cavity 239 of the hollow shaft 203 until the two thread ends 225 , 227 are exposed.
- the thread 223 can be pulled through a soft tissue, whereby the two thread ends 225, 227 can still be manipulated in a pulling direction 233 on both sides (FIG. 14) until they are knotted with the soft tissue.
- a bone anchor system 100 is provided for a knotless surgical technique in which an unloaded bone anchor 101 is connected to the hollow shaft 203 of an introducer 201 as described above.
- a threader 301 has been pushed with its wire section 307 and the terminal eyelet 305 through the cavity 239 of the hollow shaft 203 and the cavity 117 of the bone anchor 101 through the distal terminal opening 121, so that the eyelet 305 protrudes at the distal end and the finger grip 301 rests on the outside of the spiral-shaped groove 209 on the proximal side ( Figure 15) .
- the threader 301 is already prefabricated during the assembly process in production, so that it is available to the user in the bone anchor system 100, as shown in FIG.
- the user then guides a thread 223 in the pulling direction 233 through the eye of the eyelet 305 ( FIG. 16 ) .
- the user has previously fixed the first thread end 225 intra-articularly to the soft tissue.
- the thread 223 guided through the eyelet 305 is pulled through the cavity 239 of the hollow shaft 203, with the wire section 307 and then the eyelet 305 emerging from the spiral-shaped groove 209. Since the first thread end 225 already on When the soft tissue is fixed, only the second thread end 227 is pulled out of the spiral groove 209 (see FIGS. 17 and 18).
- the inserter 201 is then pulled completely out of the inserted bone anchor 101 in the pulling direction 233, with the loose thread end 227 passing through the cavity 239 of the hollow shaft 203 in the distal direction when the inserter 201 is pulled out and then being separated at a separation 309 above the bone anchor 101 inserted into the core hole 231.
- the first thread end 225 leads to the fixed soft tissue (FIG. 22).
- a pre-loaded bone anchor 101 is first set as described above and its thread material consisting of one thread or several threads is knotted with the soft tissue. This knotted suture material is now used with an unloaded second bone anchor 101 in a knotless surgical technique.
- a bone anchor 101 and bone anchor system 100 , 400 are thus provided which allow flexible loading with a knotless and / or knotted surgical technique .
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Rheumatology (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)
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022101556.4A DE102022101556B4 (de) | 2022-01-24 | 2022-01-24 | Knochenankerelement zum Einbringen in einen Knochen und/oder Fixieren von Gewebe an dem Knochen und Knochenankersystem |
| PCT/EP2023/051040 WO2023139076A1 (de) | 2022-01-24 | 2023-01-17 | Knochenankerelement zum einbringen in einen knochen und/oder fixieren von gewebe an dem knochen, einbringinstrument und knochenankersystem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4468969A1 true EP4468969A1 (de) | 2024-12-04 |
Family
ID=85036488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23701294.3A Pending EP4468969A1 (de) | 2022-01-24 | 2023-01-17 | Knochenankerelement zum einbringen in einen knochen und/oder fixieren von gewebe an dem knochen, einbringinstrument und knochenankersystem |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4468969A1 (de) |
| DE (1) | DE102022101556B4 (de) |
| WO (1) | WO2023139076A1 (de) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5258016A (en) | 1990-07-13 | 1993-11-02 | American Cyanamid Company | Suture anchor and driver assembly |
| US8894661B2 (en) * | 2007-08-16 | 2014-11-25 | Smith & Nephew, Inc. | Helicoil interference fixation system for attaching a graft ligament to a bone |
| US8460340B2 (en) | 2010-08-30 | 2013-06-11 | Depuy Mitek, Llc | Knotless suture anchor |
| US8858596B2 (en) * | 2012-03-20 | 2014-10-14 | Stryker Corporation | Suture anchor having a suture engaging structure |
| US9345471B2 (en) | 2012-06-22 | 2016-05-24 | Arthrex, Inc. | Tensionable knotless labral anchor and methods of tissue repair |
| US9198650B2 (en) | 2012-12-27 | 2015-12-01 | Medos International Sarl | Multi-piece anchor inserter |
| US9226817B2 (en) * | 2014-03-03 | 2016-01-05 | Tenjin LLC | Implant placement systems, devices, and methods |
| KR20230104750A (ko) | 2015-12-16 | 2023-07-10 | 콘메드 코포레이션 | 매듭없는 봉합사 앵커 및 전개 장치 |
| KR101671354B1 (ko) * | 2016-02-15 | 2016-11-02 | (주) 서한케어 | 인대 수술용 앵커 |
| DE102020107245A1 (de) * | 2020-03-17 | 2021-09-23 | Karl Storz Se & Co. Kg | Knochenankerelement zum Einbringen in einen Knochen und/oder Fixieren von Gewebe an dem Knochen, Einbringer, Knochenankersystem und Verfahren zum Konfektionieren eines Knochenankersystems |
-
2022
- 2022-01-24 DE DE102022101556.4A patent/DE102022101556B4/de active Active
-
2023
- 2023-01-17 EP EP23701294.3A patent/EP4468969A1/de active Pending
- 2023-01-17 WO PCT/EP2023/051040 patent/WO2023139076A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022101556B4 (de) | 2024-07-18 |
| WO2023139076A1 (de) | 2023-07-27 |
| DE102022101556A1 (de) | 2023-07-27 |
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