The present invention is concerned with carriers for holding surgical objects, and specifically, inter alia, implants such as bone plates or bone screws. It is further concerned with sets and containers containing such carriers.
Generic carriers for holding bone plates are disclosed, for example, in WO 2009/024189. The carriers have support portions located in the region of an opening of the bone plate. A support element is made of a thermoplastic material and is elastic. The bone plate is held laterally by the snap elements and pressed towards a base surface. The bone plate is in contact with the retaining elements in such a way that there is no contact between the bone plate and the base surface.
The bone plate holders disclosed in WO 2010/097447 are designed such that they can be stacked on top of each other. The bone plate holders each have an opening into which the bone plates can be inserted laterally.
Although the carriers for bone plates known in the prior art already have a number of advantages, further developments are desirable which simplify the insertion and removal of the bone plate.
Also generic carriers for bone screws are known from the already mentioned document WO 2010/097447. The screw is held on an underside of its head by a support surface of the carrier. In addition, the screw is secured by elastic tongues which rest against the thread of the screw.
Furthermore, document EP 2 392 286 discloses a carrier having a receiving opening into which a screw is inserted. In addition, the carrier has a retaining tongue for securing. In the received position, the retaining tongue secures the screw.
Further developments are also desirable with regard to carriers for bone screws, which, for example, enable even better securing of the screw in the carrier or simpler checking of the securing.
The object thus arises of further developing the carriers known from the prior art for surgical objects, in particular for implants such as bone plates or for bone screws—in particular to the effect that the surgical objects can be inserted and removed more easily and/or that they are better secured against falling out and/or that the securing is easy to check. Hereinafter, securing the surgical object is always understood to mean preventing the surgical object from falling out of the carrier.
In a first aspect, the invention relates to a carrier for receiving a surgical implant, in particular a bone plate. The carrier includes an implant receptacle formed substantially elongate along a longitudinal axis and having a first portion and a second portion. The first portion includes a shaft for receiving the surgical implant at a recess of the implant, and the second portion includes a first attachment portion for attachment to a retaining portion of a container. Optionally, the first attachment portion may also be for positioning on said retaining portion. Furthermore, the carrier includes at least one elastic element, in particular a spring, for securing the implant.
According to the first aspect of the invention, the elastic element is configured to secure, by a component of force substantially perpendicular to the longitudinal axis, an implant held on the implant receptacle. The design of the elastic element according to the invention allows quick securing and easy removal of the implant. In addition, the implant receptacle is suitable for different implant sizes and is therefore flexible in use.
In some embodiments, it is possible for the implant receptacle and the elastic element to coincide. Thus, in these embodiments, the implant receptacle itself forms an elastic element. For example, the implant receptacle may include two leaf springs extending substantially along a common longitudinal axis, but spaced apart by a greater distance in a central region than in either of their end regions.
The shaft of the implant receptacle may be sized to receive only a single implant. In many cases, however, it is useful if the shaft is dimensioned such that multiple implants can be received, for example by stacking them on top of each other.
Preferably, the elastic element is designed as a loss prevention device. In other words, it is designed to prevent the implant from inadvertently falling out of the carrier, for example by means of a clamp described in further detail below.
Preferably, the elastic element extends substantially along the longitudinal axis of the implant receptacle and is elastic at least perpendicular to this direction. In this regard, the elastic element is arranged to be elastically deformed upon removal of the surgical implant. This embodiment causes the surgical implant to be clamped in said perpendicular direction, but does not prevent its removal in the direction of the longitudinal axis. After removal of the surgical implant, the deformation of the elastic element is canceled again.
With further advantage, the implant receptacle extends along the longitudinal axis in the direction of the first portion beyond the elastic element. This allows the wearer to be easily grasped by the implant receptacle, and the implant can be easily guided or placed onto the implant receptacle.
It is further preferred if the implant receptacle has a rounded end on the side of the first portion for receiving the implant. This makes it easier to place the implant on the implant receptacle. In addition, damage to the implant and injury to the surgical staff can be prevented.
If the carrier is inserted in a container that can be closed or sealed with a lid, it is advantageous if the first portion of the implant receptacle closes with the lid at least almost, in particular completely. This can provide additional protection against loss of the stored implant.
It is also advantageous if the elastic element is deformed in an end region in the direction of the first portion, preferably curved in the direction of the implant receptacle, in such a way that the implant is secured against accidental loss. Preferably, said end region of the implant receptacle holds the implant.
Preferably, the elastic element is shaped at its end in the direction of the first portion, preferably curved away from the implant receptacle, such that the implant elastically deforms the elastic element away from the implant receptacle during insertion. The elastic element is thus automatically deformed when the implant is inserted, without any further manual intervention being required for this purpose.
It is also convenient if the carrier has only a single elastic element. This results in a structurally simple embodiment. Of course, it is also conceivable, and within the scope of the invention, that the carrier has two or more elastic elements with the above-mentioned properties.
With further advantage, the carrier additionally has a stopper with a stop for the elastic element, which is shaped and arranged in such a way that plastic deformation of the elastic element, in particular overbending, is prevented. For example, the stopper can be formed as a sheet, in particular a bent sheet, or as a further implant receptacle. In addition, the stopper can serve as a protection of the carrier.
In this context, it is advantageous if the stopper is attached to the second portion of the implant receptacle, preferably by means of a thread. The advantage of a thread is that the stopper can simultaneously serve as a nut for fastening the carrier to a bottom of a container. As an alternative to a thread, however, the fastening can also be effected by a snap-in connection (snap-in), a press connection (press-in), an adhesive connection (glue-in) or a welded connection. The thread can be an M3 thread, for example. Furthermore, the stopper can have an opening for the elastic element so that the elastic element can be passed through the stopper. Furthermore, it is possible that the stopper is formed integrally with the elastic element. For example, the stopper and the elastic element may be formed by different portions of a one-piece bent sheet.
It is further advantageous if the first attachment portion of the implant receptacle has a conical shape. In this way, play between the implant receptacle and an opening in a bottom of a container can be prevented. This can also be realized via narrow tolerances. However, a conical shape of the first attachment portion has the advantage of more precise positionability.
Furthermore, it is advantageous if the implant receptacle in the second portion has a thread and a cross-sectional thickening, preferably a head. Thus, a bottom of the container can be clamped between the cross-sectional thickening and the stopper. Expediently, the tapered first attachment portion is thereby disposed along a longitudinal axis of the implant receptacle between the thread and the cross-sectional thickening. Thus, the cross-sectional thickening may be disposed below the retaining portion of the container and the thread may be disposed above it.
In some embodiments, the resilient member includes a second attachment portion having a recess through which the implant receptacle is at least partially passed or passable so that the resilient member is attachable to the implant receptacle. This results in a compact design.
It is also preferred if the elastic element comprises a second attachment portion which is clampable between the above-mentioned stopper and a cross-sectional thickening, preferably a head, of the implant receptacle. This embodiment allows clamping between the head and the stopper.
With further advantage, the elastic member comprises a second attachment portion having at least one first projection, preferably at least two, more preferably exactly two first projections, by means of which the elastic member is alignable with the retaining portion of the container. The alignment by such a projection is structurally particularly simple. Alternatively, of course, it is also conceivable and within the scope of the invention that the retaining section has projections with which the elastic element can be aligned on the retaining section of the container.
It is also preferred that the elastic member has a second attachment portion which has at least one second projection, preferably at least two, more preferably exactly two second projections, by means of which the stopper can be aligned on the elastic member.
Preferably, the first and/or the second extensions extend along the longitudinal axis of the implant receptacle. The first extensions and the second extensions may extend in opposite directions along the longitudinal axis of the implant receptacle. Preferably, the extensions are in the form of wings, which again is a simple design. Also preferably, the extensions extend along the longitudinal axis of the implant receptacle. Alternatively, the extensions may be arranged on the aforementioned stopper.
The implant receptacle may, for example, be made of stainless steel, in particular Inox A2, and may be manufactured as a turned part. The elastic element may, for example, comprise a spring steel and be manufactured as a stamped part and/or a bent part. In advantageous embodiments, the elastic element is formed in one piece. The stopper may also comprise, for example, stainless steel, in particular Inox A2, and may be manufactured as a stamped part and/or a bent part.
A second aspect of the invention relates to a set comprising a carrier as described above and a surgical implant, in particular an implant cooperating with the carrier in the manner described above. The implant includes a recess (for example, a recess of a bone plate) in which the implant receptacle is receivable and/or through which the implant receptacle is passable to retain the implant. The combination of the carrier with the implant results in the advantages already explained above.
Preferably, the recess is at least partially round. The recess may be wholly or partially curved or circular. It may have the shape of the implant receptacle on at least one section. The cross-section of the implant may be geometrically similar or even congruent to the cross-section of the recess. These measures facilitate the positioning of the implant at the implant receptacle.
In a third aspect, the invention relates to a set comprising a carrier as described above and a locking element for the carrier, the locking element having a body with a receiving opening through which the shaft of the implant receptacle can be passed. The locking element acts as a placeholder and prevents one or more bone plates from being inserted/received at a position where placement is not desired.
Preferably, the body has an indentation for the elastic element. Alternatively, the locking element may be at least partially elastic. Both measures ensure that the locking element can be secured to the implant receptacle.
A fourth aspect of the invention comprises a container for surgical implants, in particular bone plates. The container includes at least one base having a retaining portion, wherein a carrier as described above and/or a set as described above is attached to the retaining portion, preferably directly to the retaining portion.
The advantages of such a container result from the above explanations regarding the carrier and the set.
Provided that the container comprises a carrier according to the first aspect of the invention, the shaft of the implant receptacle of the carrier preferably extends substantially perpendicular to the bottom. In this way, multiple carriers can be arranged side by side in a particularly space-saving manner.
With further advantage, the retaining section additionally has at least one alignment recess for the first projections of the carrier described above. This creates a transition fit, which is advantageous for adjusting the holding force by the distance between the contact surfaces of the alignment recess on the one hand and the contact surfaces of the extensions on the other; for the closer said contact surfaces are to each other, the more precisely the carrier can be positioned. The alignment recess can be punched or lasered, for example. It may have a plurality of regions, for example a particularly circular region for receiving the implant receptacle and at least one particularly substantially rectangular receiving region for receiving a first extension of the elastic member as described above.
In a fifth aspect, the invention also relates to a carrier for receiving at least one surgical object, in particular an implant, in particular a screw. The carrier includes a holder having at least one receptacle for the at least one surgical object, and a securing element for the at least one object. The securing element has at least one recess for removing the at least one object through the recess. The securing element is movably connected to the holder such that the securing element is movable from a first position to a second position. Thereby, in the first position of the securing element relative to the holder, the at least one object is secured, and in the second position of the securing element relative to the holder, the at least one object can be removed from the holder through the recess of the securing element along a removal direction. Depending on the position of the securing element, the object is thus removable or not. This enables particularly good securing, which is also directly visually recognizable.
Said movement of the securing element can be translatory, for example. Preferably, the movement takes place in a plane perpendicular to the removal direction.
Preferably, the carrier is inserted in a container that can be closed with a lid. In some embodiments, the securing element protrudes beyond an edge of the container in the second position, but not also in the first position. Therefore, as long as the securing element is in the second position, the lid cannot be placed on the container. This is only possible when the securing element is transferred to the first position, in which it does not protrude beyond the edge of the container.
In other embodiments, the holder is also inserted in a container which can be closed with a lid, but the securing element is or can be brought into operative connection with the lid when the lid is closed in such a way that the securing element is brought into the first position by the closing of the lid - that is, into the position in which the surgical object is secured against falling out.
Advantageously, the holder has two or three or more receptacles for surgical objects, and the securing element has recesses corresponding to the receptacles. In the first position, the surgical objects can be secured in the receptacles by the securing element, and in the second position, the respective corresponding recesses in the securing element can be removed. By positioning the securing element accordingly, it can thus be determined whether the surgical objects are secured or can be removed.
It is convenient if the receptacles are arranged along a straight line. In this way, a space-saving arrangement can be achieved.
With further preference, the carrier, in particular the securing element, has a first spring element which is designed and arranged in such a way that the securing element is held in the first position—i.e. in the position in which the surgical object is secured against falling out. For this purpose, the first spring element can exert a spring force which acts essentially parallel to the direction in which the securing element can be moved from the second position to the first position.
Preferably, the first spring element is arranged in a first end region of the securing element. Preferably, it is formed integrally with the securing element, which results in a particularly simple design.
Further advantages result if the carrier has a latching device which is designed to latch in a latching position and to fix the securing element in the second position as soon as the securing element reaches the second position. This has the effect that the securing element cannot inadvertently return to the first position and thus prevent removal of the object. Expediently, the latching device is releasable so that the securing element can be returned to the first position in which an object that has not yet been removed is secured against falling out.
The securing element may further comprise an actuating element which, when actuated, moves the securing element into the first position. In this context, the actuating element may be designed and arranged such that it is moved by the lid when a lid is fully placed on the container, in particular in the direction in which the securing element can be moved into the second position. The actuating element may be arranged in a second end region of the securing element, which is in particular integrally formed with respect to the first end region.
The second end region can be designed as a second spring element which causes the latching device to remain in the latching position when the securing element is in the second position. For this purpose, the second spring element can exert a spring force that acts transversely, in particular perpendicularly, to the direction in which the securing element can be moved from the second position to the first position.
In a particular embodiment, the latching mechanism may be implemented in that the holder of the container has at least one contoured receiving opening for receiving the second end portion of the securing element. The receiving opening may include a passageway portion. Laterally of the passageway region, a wedge-shaped recess having an inclined upper sliding surface may be provided on the upper side of the retainer and a wedge-shaped protrusion having a lower sliding surface, a vertically extending detent surface and a step formed therebetween may be provided on the lower side of the retainer. The second spring element can ensure that the latching position is assumed when the feet described further below have been moved over the step. The force of the first spring element can press the feet against the latching surface.
With further advantage, the removal direction substantially corresponds to a longitudinal axis of a surgical object held in the recess as intended. In this way, several surgical objects can be arranged in a plane perpendicular to the longitudinal axis in a space-saving manner.
Also advantageously, the securing element can be labeled, for example by laser marking. The labeling can contain, for example, information on dimensions, use, lot number, expiration date or sequence of use. This makes it easy to identify which item needs to be loaded at which position in a container when loading the container.
It is also advantageous if the securing element has at least two feet which extend from the securing element in the direction of the holder, the feet being of elastic design and at least partially forming a counter-contour to a part of the holder, so that the feet can be latched onto the holder. In this way, the securing element can be easily and securely connected to the holder.
With further advantage, the feet are displaceable from the first position to the second position along an edge of the holder when engaged. Furthermore, it is preferred if the edges for the feet are formed by elongated holder receptacles in the holder. Both measures enable a structurally simple realization of the displaceability of the securing element.
A sixth aspect of the invention is directed to a set comprising a carrier according to the fifth aspect of the invention and at least one surgical object, in particular a surgical implant, in particular a screw. The surgical object has a cross-sectional thickening, preferably a head, which preferably rests on an edge of the receptacle of the holder of the carrier. The securing element of the carrier is arranged in its first position such that the cross-sectional thickening is blocked and cannot be removed along the removal direction. This allows for controlled removal of the surgical object.
A seventh aspect of the invention relates to a container for surgical implants, in particular screws, wherein the container comprises at least one, preferably several, carriers according to the fifth aspect of the invention and/or sets according to the sixth aspect of the invention. The advantages will be apparent from the above.
Another aspect of the invention also relates to a carrier for receiving a surgical implant having a recess, in particular a bone plate having a recess. The carrier includes a shaft for receiving the surgical implant at a recess of the implant, the shaft having means at a first end for attachment to a container. Further, the carrier includes a latch element pivotally disposed at a second end of the shaft opposite the first end of the shaft. The latch element can be pivoted to a receiving position and a locking position. In the receiving position, the bone plate with the recess can be moved onto the shaft via the locking element. By pivoting the locking element into the locking position, the locking element prevents removal of the bone plate.
The invention and its advantages are explained in more detail below with reference to numerous embodiment examples and drawings. The following are shown
According to
The spring 10 shown in
In
The stopper 11 shown individually in
In
The aforementioned
The second carrier 1 according to the invention as shown in
A further embodiment is shown in
In the first position P1 shown in
The first spring element 108 is configured and arranged to hold the securing element 103 in the first position P1.
This contact does not occur until the lid 113 is fully fitted, as shown in
After the lid 113 is lifted off, the securing element 103 remains in the first position P1 due to the force caused by the first spring element 108. By exerting a force directed parallel to the line 107 on the actuating element 119, the feet 111 can be moved along the sliding surfaces 123, 125 up to above the step 127, whereby the second position P2 is reached and the feet 111 of the second end portion 118 move upwards and thus back to the latching position due to the resilient action of the first end portion 118.
The transfer of the securing element 103 from the second position P2 to the first position P1 can of course also be performed manually, i.e. without the action of the cover 113.
In
The carrier 1 according to the invention for a bone plate 2 shown in
Filing Document | Filing Date | Country | Kind |
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PCT/EP2020/053824 | 2/14/2020 | WO |