WO2002060354A1 - Befestigungsvorrichtung fürein sehnenimplantat - Google Patents
Befestigungsvorrichtung fürein sehnenimplantat Download PDFInfo
- Publication number
- WO2002060354A1 WO2002060354A1 PCT/EP2002/001094 EP0201094W WO02060354A1 WO 2002060354 A1 WO2002060354 A1 WO 2002060354A1 EP 0201094 W EP0201094 W EP 0201094W WO 02060354 A1 WO02060354 A1 WO 02060354A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- implant according
- connecting element
- contact element
- longitudinal direction
- recess
- 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.)
- Ceased
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/08—Muscles; Tendons; Ligaments
- A61F2/0811—Fixation devices for tendons or ligaments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/08—Muscles; Tendons; Ligaments
- A61F2/0811—Fixation devices for tendons or ligaments
- A61F2002/0817—Structure of the anchor
- A61F2002/0823—Modular anchors comprising a plurality of separate parts
- A61F2002/0829—Modular anchors comprising a plurality of separate parts without deformation of anchor parts, e.g. fixation screws on bone surface, extending barbs, cams, butterflies, spring-loaded pins
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/08—Muscles; Tendons; Ligaments
- A61F2/0811—Fixation devices for tendons or ligaments
- A61F2002/0847—Mode of fixation of anchor to tendon or ligament
- A61F2002/0852—Fixation of a loop or U-turn, e.g. eyelets, anchor having multiple holes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/08—Muscles; Tendons; Ligaments
- A61F2/0811—Fixation devices for tendons or ligaments
- A61F2002/0847—Mode of fixation of anchor to tendon or ligament
- A61F2002/0864—Fixation of tendon or ligament between anchor elements, e.g. by additional screws in the anchor, anchor crimped around tendon
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/08—Muscles; Tendons; Ligaments
- A61F2/0811—Fixation devices for tendons or ligaments
- A61F2002/0847—Mode of fixation of anchor to tendon or ligament
- A61F2002/087—Anchor integrated into tendons, e.g. bone blocks, integrated rings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/08—Muscles; Tendons; Ligaments
- A61F2/0811—Fixation devices for tendons or ligaments
- A61F2002/0876—Position of anchor in respect to the bone
- A61F2002/0882—Anchor in or on top of a bone tunnel, i.e. a hole running through the entire bone
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0004—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof adjustable
- A61F2250/0007—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof adjustable for adjusting length
Definitions
- the invention relates to an implant for fixing a tendon replacement plastic on a channel receiving the tendon replacement plastic in the region of the tibia and / or the femur near the knee, with a contact element abutting the channel and with a connecting element, the tendon replacement plastic and the contact element being able to be coupled by the connecting element.
- Such implants are used, for example, in the reconstruction of cruciate ligaments.
- Hamstring tendons (Semitenendinosus, Grazilles or Plantaris tendon) or BTB transplants (patella tendon) are used as tendon replacement plastic.
- a polyester band or a polyester thread are usually used as connecting elements, with which the tendon replacement plastic is anchored in the channel on an extra-osseous titanium anchoring plate which is remote from the joint.
- Such an embodiment of the implant makes it possible to fix the tendon replacement plastic in the channel only by relative movement between the contact element and the connecting element.
- Complicated knotting for example of polyester threads serving as connecting elements on a titanium anchoring plate serving as contact element, is eliminated.
- the tendon replacement plastic is stretched by only moving the connecting element relative to the contact element, the position assumed in each case between the Connection element and the contact element due to the relative movement is unchangeable.
- the connecting element and / or the contact element are made of a body-compatible material.
- the body-compatible material is an absorbable plastic. This particularly facilitates a new intervention because the resorbable material can be pierced without any problems. In particular, it cannot wrap around the drill when drilling through, as is possible with the anchoring methods described at the beginning with a polyester tape. In addition, it can grow in completely and, due to the low material accumulation, can be easily absorbed overall.
- the contact element has at least one passage recess for the connecting element, so that the contact element and the connecting element are movable relative to one another transversely to the longitudinal direction.
- the contact element and the connecting element are fixed relative to one another by an additional movement transverse to the longitudinal direction of the connecting element.
- the fixation can be reinforced with a movement transverse to the longitudinal direction.
- the contact element has at least one through recess for the connecting element, so that the connecting element and the contact element can be displaced relative to one another, and that the contact element has at least one fixing recess, the at least one a passage recess and the at least one fixation recess are connected to one another.
- the connecting element is at least partially immersed in the fixing recess of the contact element and fixes the two elements relative to one another.
- the connecting element comprises a plurality of fixing recesses which are arranged in the longitudinal direction of the connecting element. This further increases the stability of the connection between the two elements. In addition, a variety of fixing positions can be realized between the contact element and the connecting element.
- the connecting element is provided with an engagement strip formed from fixing recesses.
- the connecting element has at least two engagement strips. This further increases the stability of the connection.
- a side surface of the connecting element is provided with an engagement strip.
- the engagement strip can be attached particularly easily to a side surface of the connecting element.
- an engagement strip is arranged between side surfaces of the connecting element on the connecting element. This enables the connecting element to slide almost frictionlessly along the side surfaces.
- an engagement strip comprises rectangular recesses as fixing recesses. Recesses of this type can be produced particularly easily and, in the case of corresponding elements immersed in them, enable a virtually play-free fixation.
- the contact element has a retaining tab which can be immersed in a fixing recess and by means of which the contact element can be connected to the connecting element.
- the connection is made possible in a simple manner by immersing the retaining tab in the fixing recess. This can take place due to the relative movement of the connecting element and the contact element in the longitudinal direction of the connecting element, for example by holding tabs being immersed in fixing recesses in a sawtooth-shaped engagement bar.
- a retaining tab comprises a plurality of retaining teeth for simultaneous engagement in a plurality of fixing recesses. It can advantageously be provided that a retaining tab is arranged at an angle to a contact surface of the contact element. In this way, the movement in the longitudinal direction of the connecting element can be facilitated, but it can be made more difficult in the opposite direction, whereby the connection between the connecting element and the contact element is additionally strengthened.
- the contact element can be connected to the connecting element by a relative movement of the entire contact element.
- This configuration makes it possible to place the contact element on the channel of the bone and to pull the connecting element relative to the contact element, for example, along or through it, wherein it is preferably only possible to pull the connecting element out of the channel and in this way to tension the tendon replacement plastic, whereas movement in the opposite direction between the contact element and the connecting element is prevented due to the respective configuration.
- the connecting element is a body which is inflexible in the longitudinal direction. Due to this lower elasticity compared to the anchoring of the tendon replacement plastic using polyester bands, a bungee effect is effectively prevented. This increases primary stability immediately after the procedure and also enables more aggressive post-treatment.
- the connecting element is dimensioned such that that it has a greater width in a direction transverse to its longitudinal direction than in a direction perpendicular to it.
- Such connecting elements can be produced particularly easily and, if appropriate, provided on guide recesses along side surfaces.
- the connecting element has an essentially rectangular cross section, at least in the region running in the drilling channel.
- a rectangular cross section is particularly easy to manufacture.
- one or more side surfaces can be provided with guide recesses in a simple manner.
- the connecting element is essentially rotationally symmetrical in its longitudinal direction. This has the advantage in particular in the case of a channel which is formed by drilling that the connecting element can optimally fill the drilling channel. It is also particularly easy to manufacture.
- a fixing recess is circumferential around the circumference of the connecting element. This makes it possible to achieve a secure connection to the contact element regardless of the orientation of the connecting element within the channel. It can be advantageous if adjacent fixing recesses are separated by a spherical element. In particular, this increases the stability of the connecting element and reduces its elasticity.
- the holding part of the contact element engages in the longitudinal direction in a fixing recess. This facilitates fixation solely due to a relative movement between the connecting element and the contact element in the longitudinal direction of the connecting element.
- the contact element can be connected to the connecting element by rotation relative to it. This enables, for example, unimpeded movement in the longitudinal direction of the connecting element, whereas rotation ultimately leads to a connection of the two elements.
- the contact element has a retaining tab which can be engaged in a fixing recess of the connecting element by rotating the contact element relative to the connecting element. In this way it is possible to move the two elements almost without friction in the longitudinal direction of the connecting element, whereas the rotation leads to a connection of the two elements.
- Another advantage of this connection is that it can easily be released by twisting it again, for example to wise to allow re-tensioning or relaxation of the tendon replacement plastic.
- the connecting element is flexible transversely to its longitudinal direction. This enables an easy connection between the connecting element and the contact element and simplifies the insertion of the implant.
- the contact element can be positively fixed to the connecting element.
- it is particularly advantageous if it can be non-positively fixed to the connecting element. This further increases the stability of the connection between the two elements.
- the relative movement between the contact element and the connecting element for fixing the contact element with the connecting element takes place from an unfixed position into a fixing position. This makes it possible to first move the connecting element relative to the contact element without using a great deal of force, whereas fixing takes place in a fixing position, which is only assumed due to the relative movement.
- the end of the connecting element facing the tendon replacement plastic has a tendon replacement plastic receptacle for carrying out or hanging in the tendon replacement plastic.
- the tendon replacement plastic can be connected to the connecting element in a particularly simple manner. in principle other types of connection would also be conceivable, for example sewing on or gluing.
- the tendon replacement plastic receptacle is loop-shaped. Overall, this has a particularly high stability.
- the tendon replacement plastic can be carried out simply by means of such a loop-shaped tendon replacement plastic recording.
- the shape of the loop-shaped tendon replacement plastic receptacle can be as desired, but it is advantageous if it has an essentially round loop shape. This avoids any sharp edges or sharp corners that could damage the tendon replacement plastic.
- the tendon replacement plastic receptacle is essentially triangular. This enables a leg of the tendon replacement plastic receptacle which runs essentially transversely to the longitudinal direction of the connecting element and against which the tendon replacement plastic can be placed. This causes an optimal transfer of force between the tendon replacement plastic and the connecting element.
- the tendon replacement plastic receptacle is hook-shaped.
- the free ends of which are provided with a rectangular plate having two bores, these can be connected particularly easily to the connecting element, since the hook-shaped eyes plastic replacement can be passed through both holes.
- a locking element is provided at the free end of the hook-shaped tendon replacement plastic receptacle and at least one locking element receptacle is provided on the connecting element for transferring and locking the hook-shaped tendon replacement plastic receptacle into a loop-shaped tendon replacement plastic receptacle.
- the end of the connecting element forming the tendon replacement plastic receptacle can be designed to be sufficiently elastic to facilitate locking. This simplifies the preparation of the implant.
- any cross sections of the tendon replacement plastic image would be conceivable. However, it is advantageous if they are round, oval or rectangular at least in sections. Round and / or oval cross sections have the advantage that damage to the tendon replacement implant can be avoided. Rectangular cross sections can be produced particularly easily and have increased stability.
- the contact element has a section that dips into the channel.
- the contact element has a section that dips into the channel.
- the immersing section is rotationally symmetrical. In this way, it can be optimally adapted to a drilled channel, which minimizes the play between the contact element and the bone.
- the immersing section has a constant cross section in the longitudinal direction.
- the immersing section has a cross section that decreases in the longitudinal direction of the passage recess in the direction of the tendon replacement plastic.
- Such a, for example conical, design enables the jamming of the contact element with its immersing section in the channel in a simple manner.
- the contact element has a contact area which lies outside the channel and at least partially covers the channel. Such a contact area prevents the contact element from dipping into the channel.
- the abutment area practically forms a stop for the abutment element on the bone in order to prevent the abutment element from penetrating into the canal.
- the contact area has an outer surface facing away from the drilling channel, which essentially runs in a plane transverse to the longitudinal direction of the through-recess.
- Such a contact element is particularly easy to manufacture.
- the contact area has an outer surface facing away from the drilling channel, which, with a plane transverse to the longitudinal direction of the passage recess, encloses an angle which is an angle formed between the channel and a passage area formed by the channel in the tibia or the femur equivalent.
- Such a configuration of the contact area enables the contact element to lie optimally against the bone, in particular in the case of a bore which enters the bone obliquely from the bone surface.
- the contact element projects from the bone only minimally in this way.
- the contact area has a larger cross section than the immersing section. In this way it is possible to completely cover the canal and form a stop on the bone.
- the contact area is pivotally mounted on the immersing section. This has the advantage that the contact area is always oriented parallel to the surface of the bone and thus protrudes only minimally from the bone.
- the force acting on the bone by tensioning the tendon replacement plastic via the contact element can be optimally transmitted to the entire edge of the canal on the bone surface.
- the retaining tab on the contact element is mounted so as to be displaceable in a direction transverse to the passage recess. In this way, the retaining tab can be specifically transferred from a release position into a locking position and vice versa.
- a guide opening running transversely to the passage opening is provided for guiding and storing the holding tab.
- the retaining tab is prestressed in the direction of the passage recess.
- the retaining tab can thus be held permanently in a locking position and secured due to the pretension.
- a particularly simple structure of the implant is obtained if an elastic element is provided for generating a prestress.
- the elastic element is advantageously formed in one piece with the retaining tab.
- the fixing recess comprises a fixing recess surface oriented transversely and obliquely to the longitudinal direction of the connecting element.
- the fixation recess surface oriented obliquely to the longitudinal direction serves as a sliding surface
- the fixation recess surface oriented transversely to the longitudinal direction of the connecting element serves as a stop for the contact element or parts thereof.
- FIG. 1 a schematic view of a knee joint with a tendon replacement plastic fixed in the femur and in the tibia;
- Figure 2 is a cross-sectional view of a first embodiment of a contact element according to the invention.
- FIG. 3 a top view of the contact element from FIG. 2;
- Figure 4 is a cross-sectional view of a second embodiment of a contact element;
- Figure 5 is a cross-sectional view of a third embodiment of a contact element
- FIG. 6 a cross-sectional view of a fourth exemplary embodiment of a contact element
- FIG. 7 a schematic side view of a loop-shaped plastic tendon replacement
- Figure 8 is a side view in the direction of arrow A in Figure
- FIG. 9 a cross-sectional view along line 9-9 in FIG. 7 or FIG. 13;
- Figure 10 is a cross-sectional view taken along line 10-10 in Figure
- Figure 11 is a cross-sectional view taken along line 11-11 in Figure
- Figure 12 is a cross-sectional view taken along line 12-12 in Figure
- FIG. 13 a side view of a loop-shaped plastic tendon replacement in a triangular shape
- FIG. 14 a side view of a lockable hook-shaped plastic tendon replacement
- Figure 15 a side view in the direction of arrow B in Figure
- Figure 16 a side view of a first embodiment of a connecting element with associated contact element
- Figure 17 is a cross-sectional view taken along line 17-17 in Figure
- FIG. 18 a side view of a second exemplary embodiment of a connecting element with associated contact element
- Figure 19 is a plan view in the direction of arrow C in Figure 18;
- Figure 20 a side view in the direction of arrow D in Figure
- FIG. 21 a cross-sectional view through a third exemplary embodiment of a connecting element with associated contact element
- Figure 22 a plan view of the contact element in Figure 21 in
- Figure 23 a side view of the connecting element
- FIG. 24 a side view of a fourth exemplary embodiment of a connecting element with associated contact element
- Figure 25 a plan view of the contact element in Figure 24 in
- Figure 26 a side view of the connecting element
- FIG. 27 a side view of a fifth exemplary embodiment of a connecting element with associated contact element
- FIG. 28 a plan view of the contact element from FIG. 27 in the direction of arrow I;
- FIG. 29 a side view of a sixth exemplary embodiment of a connecting element with associated contact element
- FIG. 30 a top view of the contact element from FIG. 29 in the direction of arrow K;
- Figure 31 a side view of the connecting element
- FIG. 32 a side view of a seventh exemplary embodiment of a connecting element with associated contact element
- FIG. 33 a plan view of the contact element from FIG. 32 in the direction of the arrow M;
- FIG. 34 a side view of an eighth exemplary embodiment of a connecting element with associated contact element
- FIG. 35 a plan view of the contact element from FIG. 34 in the direction of arrow N;
- Figure 36 a partial longitudinal sectional view through a ninth
- Figure 37 is a side view of the partially cut ninth embodiment shown in Figure 36 and FIG. 38: a top view of a retaining element forming part of the ninth exemplary embodiment.
- longitudinal channels 106 and 108 are drilled in the femoral head 102 and in the tibia head 104, which are essentially aligned with one another when the knee joint 100 is extended and which extend from the front to the back of the knee joint 100 enforce this at an angle.
- a cruciate ligament replacement plastic 116 is inserted into the joint gap 110 between the tibial head 104 and the femoral head 102 facing the duct sections 112 and 114 of the longitudinal ducts 106 and 108, which are enlarged in diameter in one step, and which comprises a band-shaped piece 118 of a tendon replacement plastic, for example a part of the patellar tendon , at the ends of which loop-shaped ends 124 and 126 of fastening rails 128, 130 preferably made of resorbable plastic are arranged through openings 120, 122.
- the elongated fastening rails 128 and 130 which completely penetrate the longitudinal channels 106 and 108 and protrude from the femoral head 102 and the tibia head 104, each have a coupling section 136 and 138 facing their second free end 132 and 136, respectively with a corresponding area of a part that is partially immersed in the longitudinal channels 106 and 108 and partly on the outside of the femoral head 102 or the tibial head 104 are attached to the fastening block 140 or 142.
- the band-shaped piece 118 is drawn in and prestressed up to the stop of the channel sections 112 and 114 formed by the single-stage extension, by pulling the fastening rails 128 and 130 out of the knee joint 100 in the opposite direction and relative to the fastening blocks 140 and 142 are moved until the band-shaped piece 118 is positioned within the channel sections 112 and 114 in the desired manner.
- the fastening blocks 140 and 142 and the fastening rails 128 and 130 with the loop-shaped ends 124 and 126 arranged thereon can be designed in different ways. Various configurations of the individual elements are illustrated and explained in more detail below in FIGS. 2 to 35. Different basic shapes of the fastening blocks 140, 142 can be combined as desired with loop-shaped ends 124, 126 and different coupling sections 136, 138, each with correspondingly designed fastening blocks 140, 142. Therefore, the individual elements of the cruciate ligament replacement plastic 116 are each explained separately below.
- FIGS. 2 to 6 show four different basic types of fastening blocks 140, 142.
- FIGS. 2 and 3 show a block 150 which is completely rotationally symmetrical with respect to the axis of symmetry 157 and which has a hollow cylindrical insert which can be inserted into the longitudinal channel 106 or 108 Body section 152 and shown with an adjoining, larger diameter head 154.
- the side surface 156 of the head 154 facing the body section 152 serves the block 150 as a stop on the femoral head 102 or tibia head 104 in order to prevent penetration into the longitudinal channel 106 or 108.
- the head 164 projecting in diameter over the hollow cylindrical body section 162 is inclined relative to the axis of symmetry 167 of the body section 162.
- this offers the possibility of the body section 162 with its axis of symmetry 167 being immersed therein parallel to the longitudinal axis of the longitudinal channels 106 and 108, whereas the side surface 166 of the head 164 is completely on the outer surface of the femoral head 102 and the tibia head 104 is present, despite the obliquely drilled longitudinal channels 106 and 108.
- the force acting on the side surface 166 when tensioning the cruciate ligament replacement plastic 116 can be optimally transmitted to the femoral head 102 or the tibia head 104.
- FIGS. 5 and 6 show conical blocks 170 and 180 with respect to their axes of symmetry 177 and 187, each of which has a central bore 171 and 181, respectively. At their end with the largest diameter, they have a flat, ring-shaped outer surface 175 or 185, the outer surface 175 being oriented perpendicular to the axis of symmetry 177, while the outer surface 185 is inclined relative to the axis of symmetry 187. Both the block 170 and the block 180 are inserted from the outside into the longitudinal channels 106 and 108 and jam in them due to their conical shape.
- the inclined outer surface 185 is particularly advantageous in the case of longitudinal channels 106 or 108 arranged obliquely in the femoral head 102 or tibia head 104, so that the block 180 protrudes only minimally from the surface of the two bones.
- the blocks 150, 160, 170 and 180 have at their end immersed in the longitudinal channel 106 and 108 inward on the symmetry axes 157, 167, 177 and 187, holding elements 159 projecting from the inner surface of the bores 151, 161, 171 and 181 , 169, 179 and 189. These are only shown schematically in regions 2 to 6; possible alternative embodiments are described in more detail in connection with FIGS. 16 to 35.
- the loop-shaped ends 124 and 126 of the fastening rails 128 and 130 can, as already indicated, be designed in different ways. Examples of this are shown in FIGS. 7 to 15.
- FIGS. 7 and 8 show a first exemplary embodiment of a loop 200, which defines an essentially drop-shaped passage opening 202, a free end 134 of one of the fastening rails 128 and 130 being returned to itself and being welded, glued, knotted or clamped to it, for example , A band-shaped piece 118 of a cruciate ligament replacement plastic 116 can then be passed through the opening 202, as shown in FIG.
- FIGS. 9 to 12 show different possible cross sections of the loop 200.
- FIG. 9 shows a circular cross-sectional area 210
- FIG. 10 shows an elongated oval cross-sectional area 212
- FIG. 11 shows a transversely elongated oval cross-sectional area 214
- FIG. 12 shows a rectangular cross-sectional area 216.
- Each of the cross-sectional areas 210, 212, 214 and 216 shown in FIGS. 9 to 12 is arbitrary with that in FIG the shape of the loop 200 shown in FIGS. 7 and 8 can be combined.
- FIG. 13 shows a loop 220 slightly modified from the loop 200, which defines a triangular passage opening 222 which has the shape of an isosceles triangle, the base of which defines a holding section 224 running perpendicular to the longitudinal direction of the fastening rail 128 or 130.
- the two legs of equal length, forming loop sections 228 and 229, are joined together at a connection point 226, which can be formed, for example, by an adhesive point, by a weld or by a jam.
- the holding section 224 can have different shapes in cross section, for example circular or elongated oval cross-sectional areas 210, 212 or 214 shown in FIGS. 9 to 11 are conceivable.
- the cross section of the two loop sections 228 and 229 of the same length is rectangular, as shown in FIG.
- the band-shaped piece 118 is guided through the passage opening 222 analogously to the loop 200 and lies against the holding section 224.
- a third exemplary embodiment of a loop 240 according to the invention can be seen in FIGS. 14 and 15.
- the shape of the loop 240 corresponds essentially to that of the loop 200.
- the main difference, however, is that the loop 240 can be opened.
- the fastening rail 128 or 130 has an elongated hole 242 which extends in the longitudinal direction and at whose end remote from the loop 240 there is arranged an insertion opening 244 which is larger in diameter than the elongated hole.
- an insertion opening 244 which is larger in diameter than the elongated hole.
- the open, hook-shaped loop 240 in this position is passed through one of the openings 120, 122 of the band-shaped piece 118.
- the locking nail 248 is completely inserted with its head 250 through the insertion opening 244 and can then be moved from the insertion opening 244 into the elongated hole 242.
- the band-shaped piece 118 is thus secured in the loop 240 forming a drop-shaped loop in a closed position analogous to the loop 200.
- FIGS. 16 to 35 show different variants of coupling sections 136 and 138 and corresponding holding elements 159, 169, 179 and 189, shown schematically in connection with FIGS. 2 to 6.
- fastening blocks are used which correspond in their outer structure to block 150, that is to say completely rotationally symmetrically are formed trically and have a hollow cylindrical body portion.
- fastening blocks with a base body are also possible, such as the blocks 160, 170 and 180 shown in FIGS. 4, 5 and 6.
- FIG. 16 shows a section of a fastening rail 128 with a coupling section 260, which is shaped to be completely rotationally symmetrical to a longitudinal axis 261.
- the coupling section 260 is formed by a multiplicity of identical ring recesses 262, so that an elongated structure remains which consists of the same number of cone bodies 263 having a cone base surface 266 oriented transversely to the longitudinal axis, the tip of each cone body 263 penetrating into the base surface of the adjacent cone body ,
- the coupling section 260 thus has a kind of fir tree-shaped appearance in the side view.
- a block 265 serving as an abutment element has an annular projection 267 corresponding to the ring recesses 262 and projecting towards the longitudinal axis 261 and, like the conical bodies 263, has an inclined outer surface 268.
- the block 265 When connecting the block 265 to the fastening rail, the block 265 is pushed over the fastening rail until the outer surfaces 268 slide over the inclined conical surfaces 264 of the conical body 263. As soon as the latching surface 269 of the projection 267, which extends transversely to the longitudinal axis 261, engages behind the conical base surface 266, a connection is established between the block 265 and the fastening rail in the region of the coupling section 260. It is although it is still possible to push block 265 further up onto the fastening rail, pulling back is impossible due to the snap connection that has been created. For tensioning the band-shaped piece 118, one of the two fastening rails can be shifted in the longitudinal direction step by step, precisely at the distance between two cone base surfaces 266.
- FIGS. 18 to 20 show an alternative embodiment of a coupling section 280 with associated block 285.
- a plurality of saw teeth 283 are arranged at the same distance on a side body 282 of a basic body 281 of the coupling section 280, which thus form a toothed strip.
- Each sawtooth 283 has a tooth surface 284 oriented transversely to the longitudinal axis 286.
- the block 285 has an opening 288 with a rectangular cross section along its longitudinal axis 286, the cross section of the opening corresponding to the cross section of the coupling section 280 in the region of the tooth surfaces 284.
- block 285 On its side facing away from a head 289 of block 285, block 285 has a locking tooth 290 which can fill a fixing recess 287 formed between two saw teeth 283.
- the block 285 can be locked unidirectionally with the fastening rail in the area of the coupling section 280, namely by an inclined side surface of the locking tooth 290 sliding over an inclined side surface of one of the saw teeth 283 until the locking tooth 290 dips into the fixing recess 287.
- Another coupling section 300 is shown in FIGS. 21 to 23.
- a basic body 301 of the coupling section 300 which is rectangular in cross section, is provided transversely to its longitudinal direction with essentially rectangular openings 303, which are arranged equidistantly along the basic body 301.
- a corresponding block 305, which serves as a contact element, is provided with an opening 306 which is also rectangular in cross section, this at one end having two opposing locking teeth 307 and 308, each pointing from the inner wall of the opening 306 to the opposite wall.
- the fastening rail is pushed through the opening 306 of the block 305, namely until the locking teeth 307 and 308 dip into one of the openings 303. Since each of the locking teeth 307 and 308 has a tooth surface 309 oriented transversely to the longitudinal direction 302, only a unidirectional movement of the block 305 relative to the fastening rail is possible.
- the band-shaped piece 118 can be tensioned in the desired manner in defined steps, each of which corresponds to the distance between two openings 303.
- a coupling section 320 comprises a basic body 321 with a rectangular cross section, the narrow sides of which each have a row of equidistantly arranged rectangular teeth 322.
- Block 325 points an opening 326, which is also rectangular in cross-section, on a loop-shaped base body, a square lobe with three locking teeth 327 projecting from each of the narrow side faces projecting in the longitudinal direction of the coupling section 320, in such a way that they can dip into recesses formed between the teeth 322, when block 325 is slid over coupling portion 320.
- FIGS. 27 and 28 show another conceivable coupling section 340.
- the principle corresponds to the coupling section 300 shown in connection with FIGS. 21 to 23.
- a block 345 serving as a contact element has a bushing 346 which penetrates it completely in the longitudinal direction and which is rectangular in cross section.
- Two teeth 347 each protrude from the two wide inner walls of the feedthrough 346 in the direction of the opposite wall of the feedthrough 346.
- the fastening rail is pushed through the passage 346 until the four teeth 347 are immersed in four corresponding openings 342 in the coupling section 340. Due to an inclined side surface of the teeth 347, only a unidirectional displacement of the block 345 relative to the fastening rail is possible.
- a completely different locking mechanism is provided in the coupling section 360 shown in FIGS. 29 to 31. Although this corresponds completely to the coupling section 320 described in connection with FIGS. 24 to 26, a block 365 is constructed differently. In its basic form, it corresponds to the block 150 known from FIG. 2.
- This has a cylindrical bore 366 along its axis of symmetry, one end of the block 365 being provided with an annular projection 367 projecting radially outwards.
- a locking projection 368 protruding radially in the direction of the axis of symmetry is provided, which has two diametrically opposite interruptions 369 and 370.
- the diameter of the bore 366 and the width of the coupling section 360 are coordinated with one another such that the two toothed strips formed on the narrow sides of the rectangular base body 361 from teeth 362 arranged equidistantly can be pushed through the bore 366 in such a way that the teeth 362 into the interruptions 369 and Protrude 370.
- the mounting rail can thus be pulled through the bore 366 of the block 365 without friction and without locking in any form.
- FIGS. 32 and 33 Another type of connection between a block 385 and a coupling section 380 is shown in FIGS. 32 and 33.
- the coupling section consists of a rotationally symmetrical spherical body 381 which is arranged at a distance from one another in a chain.
- the block 385 has a hollow cylindrical body section 382 which is completely closed by a cover 383 which is larger in diameter.
- An elongated hole 384 is machined into the cover in a rotationally symmetrical manner with respect to its axis of symmetry, one half of which, pointing away from the axis of symmetry, is widened by a bore 386.
- a connection between the block 385 and the fastening rail is possible by passing the coupling section 380 through the bore 386 of the cover 383 of the block 385.
- To lock block 385 with the fastening rail only block 385 has to be displaced relative to the fastening rail in a direction toward the axis of symmetry of coupling section 380, in such a way that the unexpanded section of elongated hole 384 engages between two spherical bodies 381.
- the block 385 and the fastening rail are fixed relative to one another. This position can also be released by displacing the fastening rail relative to the block 385 until the spherical bodies 381 can be passed through the bore 386 again.
- FIGS. 34 and 35 Another possibility of connecting the fastening rail to a rotationally symmetrical block 395 serving as a contact element is shown in FIGS. 34 and 35.
- the mounting rail is provided with a coupling section 390, which has an external thread 391.
- the block 395 comprises a central bore 396, which is provided with an internal thread 397 corresponding to the external thread 391.
- the block 395 has a hemispherical base body 398, on the curved side of which a cylinder section 399 is arranged. On the flat side of the base body 398 there is a cuboid section 392, which can be brought into engagement with a fastening tool, for example an open-ended wrench.
- a disk 393 bears on the spherical surface of the main body 398, the opening 394 of which is adapted to the spherical surface of the main body 398. As a result, the disk 393 can be rotated relative to the base body 398 and pivoted along the surface of the base body 398.
- the fastening rail with the coupling section 390 is brought up to the cylinder section 399 of the block 395 and the internal thread 397 is screwed to the external thread 391.
- This enables the pretensioning of the band-shaped piece 118 arranged at the free end of the fastening rail to be steplessly adjusted.
- the disk 393 enables adaptation to the surface of either the femoral head 102 or the tibia head 104 in the case of an obliquely drilled longitudinal channel 106 or 108.
- the disk 393 always adjusts itself parallel to its surface and, due to the spherical design of the base body 393, can optimally apply the acting tensile forces transferred to the surface of the bones.
- FIGS. 36 and 37 A ninth exemplary embodiment of a connecting element with associated contact element is shown in FIGS. 36 and 37.
- the connecting element shown only in part, in the form of a fastening rail is provided with a coupling section 402, which essentially corresponds to the coupling section 260 of the first exemplary embodiment shown in FIG. It is rotationally symmetrical to a longitudinal axis 404 and has a plurality of identical ring recesses 406, so that an elongated structure with a number corresponding to the number of ring recesses 406, a cone body 408 oriented transversely to the longitudinal axis 404 is formed, the tip of each Cone body 410 immersed in the cone base 408 of the adjacent cone base 410.
- the coupling section 402 thus has a fir tree-shaped appearance in a side view.
- a ball 416 having a central bore 414 is provided as part of a contact element 412, the inner diameter of the bore 414 being matched to the largest outer diameter of the coupling section 402, so that the ball can be displaced in the direction of the longitudinal axis 404 on the coupling section 402.
- the ball 416 In an equatorial plane running transversely to the longitudinal axis 404, the ball 416 has an annular groove 418 completely surrounding it, the depth and width of which is adapted to a spring wire ring 20 mounted therein.
- an opening 422 Oriented transversely to the longitudinal axis, an opening 422, which is cuboid in cross section, is provided in the equatorial plane and intersects the bore 414, as a result of which two locking body receptacles 424 and 425 are formed, each of which extends from the bore 414 extend radially outwards and in each of which a locking body 426 or 427 is inserted.
- the two locking bodies 426 and 427 are held in the locking body receptacles 424 and 425 by the spring wire ring 420.
- An end 428 or 429 of the locking body 426 or 427 facing the bore 414 is designed to correspond to the ring recesses 406 and can dip into the latter.
- An annular disk 434 is rotatably and pivotably mounted on the spherical surface 432, so that any angle of inclination 436 can be set between a plane defined by the disk 434 and the longitudinal axis 404.
- the fastening rail with the coupling section 402 is pushed through the bore 414 in the direction of the arrow 403 until the locking bodies 426 and 427 biased by the spring wire ring 420 in the direction of the longitudinal axis 404 with their ends 428 and 429 into the ring recesses 406 plunge. Because of the design of the cone body 410, the fastening rail with the coupling section 402 arranged thereon can only be moved in the direction of the arrow 430 when the ball 416 is held in place, in the opposite direction the ends 428 and 429 lying on the cone base surface 408 have a blocking effect for movement.
- the band-shaped piece 118 arranged at the free end of the fastening rail can be pretensioned by a corresponding relative movement between the fastening rail and the ball 416.
- the disc 434 enables adaptation to the surface of either the femoral head 102 or the tibial head 104 in the case of an obliquely drilled longitudinal channel 106 or 108.
- the disc 434 can always adjust parallel to the surface of the femoral head 102 or the tibia head 104 due to the special bearing on the ball 416, as a result of which the tensile forces acting on the surface due to the prestressing of the band-shaped piece 118 are optimal the bone can transmit.
- a retaining element shown in FIG. 38 and provided overall with reference numeral 440 can be used. It comprises a retaining element 442 corresponding to the locking bodies 426 and 427, which is integrally formed symmetrically on a C-shaped retaining ring 444 formed from spring steel, so that the retaining element 440 is formed flat overall. Due to the symmetrical arrangement of the holding element 442 on the holding ring 444, two spring arms 446 and 447 are formed thereon, the dimensions of which are chosen such that they fit into the annular groove 418.
- Free ends of the spring arms 446 and 447 are provided with retaining lugs 448 and 449, which point approximately to a center point of the retaining ring 444.
- the length of the spring arms 446 and 447 is selected so that the retaining lugs 448 and 449 at least partially immerse in the cuboid opening 422 and hold the retaining element 442 in prestress on the coupling section 402.
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Rehabilitation Therapy (AREA)
- Rheumatology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP02716718A EP1355592A1 (de) | 2001-02-02 | 2002-02-02 | Befestigungsvorrichtung für ein sehnenimplantat |
| US10/631,466 US20040073306A1 (en) | 2001-02-02 | 2003-07-30 | Implant |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20101791.1 | 2001-02-02 | ||
| DE20101791U DE20101791U1 (de) | 2001-02-02 | 2001-02-02 | Implantat |
| DE10104658A DE10104658A1 (de) | 2001-02-02 | 2001-02-02 | Implantat |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10/631,466 Continuation US20040073306A1 (en) | 2001-02-02 | 2003-07-30 | Implant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2002060354A1 true WO2002060354A1 (de) | 2002-08-08 |
Family
ID=45498169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2002/001094 Ceased WO2002060354A1 (de) | 2001-02-02 | 2002-02-02 | Befestigungsvorrichtung fürein sehnenimplantat |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20040073306A1 (de) |
| EP (1) | EP1355592A1 (de) |
| DE (2) | DE20101791U1 (de) |
| WO (1) | WO2002060354A1 (de) |
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| DE102004053464A1 (de) * | 2004-11-03 | 2006-05-04 | Karl Storz Gmbh & Co. Kg | Ovalärer Stift zum Fixieren eines unter Zuglast beanspruchten Implantates |
| US7559932B2 (en) * | 2004-12-06 | 2009-07-14 | Dfine, Inc. | Bone treatment systems and methods |
| WO2007024282A2 (en) * | 2005-04-20 | 2007-03-01 | Arthroscopic Innovations Llc | Suture fixation device and method for surgical repair |
| CZ300425B6 (cs) * | 2006-06-22 | 2009-05-13 | Beznoska, S. R. O. | Vazivový implantát |
| WO2008030668A2 (en) * | 2006-07-26 | 2008-03-13 | Lambert Systems, L.L.C. | Biocompatible anchoring device for a soft tissue graft, method of making and method of using |
| US7963983B2 (en) * | 2006-10-17 | 2011-06-21 | Arthroscopic Innovations Llc | Fixation device for surgical repair |
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| EP2131880B1 (de) * | 2007-02-20 | 2012-08-08 | Shriners Hospitals for Children | Hydraulische in-vivo-fixierung mit bionieten anhand von biokompatiblen dehnbaren fasern |
| GB0801956D0 (en) * | 2008-02-02 | 2008-03-12 | Imp Innovations Ltd | Adjustable ligament graft fixation |
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| US8439976B2 (en) * | 2009-03-31 | 2013-05-14 | Arthrex, Inc. | Integrated adjustable button-suture-graft construct with two fixation devices |
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| US20110160772A1 (en) * | 2009-12-28 | 2011-06-30 | Arcenio Gregory B | Systems and methods for performing spinal fusion |
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| US10245016B2 (en) | 2011-10-12 | 2019-04-02 | Arthrex, Inc. | Adjustable self-locking loop constructs for tissue repairs and reconstructions |
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| US10610211B2 (en) | 2013-12-12 | 2020-04-07 | Howmedica Osteonics Corp. | Filament engagement system and methods of use |
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| US10335136B2 (en) | 2015-08-20 | 2019-07-02 | Arthrex, Inc. | Tensionable constructs with multi-limb locking mechanism through single splice and methods of tissue repair |
| US10265060B2 (en) | 2015-08-20 | 2019-04-23 | Arthrex, Inc. | Tensionable constructs with multi-limb locking mechanism through single splice and methods of tissue repair |
| US20190209288A1 (en) * | 2015-08-26 | 2019-07-11 | Medacta International S.A. | System for the intraosseous attachment of a flexible wire intended for anchoring ligament tissue to bone |
| USD902405S1 (en) | 2018-02-22 | 2020-11-17 | Stryker Corporation | Self-punching bone anchor inserter |
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| WO1998011839A1 (en) * | 1996-09-20 | 1998-03-26 | Medicinelodge, Inc. | Adjustable length strap and footing for ligament mounting and method for its use |
| US5980557A (en) * | 1997-02-05 | 1999-11-09 | Ethicon | Fastener for fastening a muscle tendon to a bone |
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-
2001
- 2001-02-02 DE DE20101791U patent/DE20101791U1/de not_active Expired - Lifetime
- 2001-02-02 DE DE10104658A patent/DE10104658A1/de not_active Withdrawn
-
2002
- 2002-02-02 EP EP02716718A patent/EP1355592A1/de not_active Withdrawn
- 2002-02-02 WO PCT/EP2002/001094 patent/WO2002060354A1/de not_active Ceased
-
2003
- 2003-07-30 US US10/631,466 patent/US20040073306A1/en not_active Abandoned
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| CH267810A (de) * | 1948-07-07 | 1950-04-15 | Ruetschi Ernst | Gelenk für ein Ersatzgliedmass. |
| WO1998011839A1 (en) * | 1996-09-20 | 1998-03-26 | Medicinelodge, Inc. | Adjustable length strap and footing for ligament mounting and method for its use |
| US5980557A (en) * | 1997-02-05 | 1999-11-09 | Ethicon | Fastener for fastening a muscle tendon to a bone |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1355592A1 (de) | 2003-10-29 |
| DE20101791U1 (de) | 2001-05-03 |
| DE10104658A1 (de) | 2002-10-02 |
| US20040073306A1 (en) | 2004-04-15 |
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