Surgical instrument and surgical instrument assembly for use in dental, oral and / or maxillofacial surgery

Abstract

The invention relates to a surgical instrument (10) for use in dental, oral, and / or mouth, jaw, and facial surgery, wherein the instrument (10) has an interface (16) for connecting the instrument (10) to a dental angle (14) or handpiece (12), by means of which interface the instrument (10) can be connected to a dental angle (14) or handpiece (12) in such a way that the instrument (10) can be driven by the angle (14) or handpiece (12) in a rotating movement about a rotation axis (X). The instrument (10) further has a drum-shaped base body (18), wherein a collecting space (20) for collecting bone chips is formed inside the base body (18). The drum-shaped base body (18) has a lateral surface (22) (24) pointing radially outwards with respect to the rotation axis (X).wherein the instrument (10) has a blade for removing bone chips and an opening (26) which is arranged and designed such that bone chips removed by the blade (24) can penetrate through the opening (26) into the collecting space (20), characterized in that the blade (24) and in particular the opening is arranged on the lateral surface (22) of the base body (18).

Description

[0001] The invention relates to a surgical instrument for use in dental, oral, and / or oral, maxillofacial and facial surgery as well as a surgical instrument arrangement for use in dental, oral, and / or oral, maxillofacial and facial surgery.

[0002] In the aforementioned dental specialties, the need to reconstruct lost jawbone regularly arises. This procedure, also known as jaw augmentation, involves the formation of new jawbone. Bone material is first implanted into the area of ​​the jaw where bone is to be augmented.

[0003] The current medical gold standard is the so-called shell technique developed by Professor Dr. Fouad Khoury. In this technique, a container is first created using thin bone shells. The bone shells are then fixed to the desired position of the existing jawbone using bone screws. The cavity between the bone shells, or the interior of the "bone container," is usually filled with bone grafts.

[0004] For bone material, the patient's own, so-called autologous bone currently represents the medical gold standard. Instruments have already been developed for harvesting bone shells from the patient's own bone, such as the "Microsaw" developed by Khoury or the "Easy Bone Collector" developed by Zastrow. However, these instruments are essentially suitable for harvesting relatively solid bone shells.

[0005] However, the extraction of bone chips used to fill the cavities is currently typically done with handheld scraping instruments. Such handheld instruments are available on the market, for example, under the name "safescraper."

[0006] Obtaining bone chips using such hand instruments is comparatively time-consuming and laborious. This results in considerable physical exertion for the surgeon. At the same time, however, the bone chips are crucial for the formation of new bone in the jaw area where bone augmentation is to take place. By inserting the bone chips, potent vital bone cells, platelets, and healing-promoting proteins are introduced into the augmentation area in large quantities. At the same time, the volume of the augmentation process is stabilized. While the bone shells in the shell technique essentially serve as an external mechanical barrier, the bone chips inserted into the cavity between the bone shells play a crucial role in the biological processes of bone augmentation.

[0007] The TW M 484410 U shows a surgical instrument that can be driven in a rotating motion around a rotational axis. On a surface facing the rotational axis, the instrument has blades by means of which bone chips can be removed. The chips can collect in a space inside the instrument. The chips can be removed through an opening in the area of ​​the outer surface of the instrument. The disadvantage of such an instrument is that the exposure of the bone required for its use creates relatively large wounds, and the chip removal is accompanied by the creation of circular, deep defects in the bone, similar to actual drilling.

[0008] DE 10 2016 120 755 A1 discloses a surgical instrument, particularly for use in dental surgery, comprising a processing device and a protective device. The processing device comprises a shaft with a connecting region and a hollow cylindrical head. An active region, particularly for machining or grinding bone, is formed at a distal edge of the head. The protective device surrounds the head at least in part and is rotatably coupled to a bearing element of the processing device that extends at least in part within the head.

[0009] The invention is based on the object of providing a surgical instrument and a surgical instrument arrangement which enable the extraction of bone material in the form of bone chips in a manner which is comfortable for the surgeon and gentle for the patient.

[0010] This object is achieved by a surgical instrument and a surgical instrument assembly having the features of the independent claims. The features of the dependent claims relate to advantageous embodiments.

[0011] The surgical instrument has an interface for connecting the instrument to a dental angle or handpiece. Using the interface, the instrument can be connected to a dental angle or handpiece in such a way that the instrument can be driven by the angle or handpiece in a rotating motion around a rotational axis.

[0012] The interface can be a shaft, particularly an FG shaft, RA shaft, HP shaft, or HPT shaft. These shafts are well suited for connection to dental contra-angles or handpieces, as such contra-angles or handpieces often have compatible mechanical interfaces for mechanically connecting the corresponding contra-angle or handpiece to a corresponding shaft.

[0013] The instrument further features a drum-like base body. A collection chamber for collecting bone chips is formed inside the base body. Such a drum-like base body design, with a collection chamber formed inside the base body for collecting bone chips, offers the advantage of providing a sufficiently large space for collecting the bone chips. This allows a significant amount of bone chips to be collected during uninterrupted operation of the instrument without having to interrupt operation to remove the bone chips from the collection chamber. Carrying out the "collection operation" with as few interruptions as possible to remove the collected bone chips from the instrument shortens the entire procedure and thus makes treatment more gentle and, ultimately, more cost-effective.

[0014] The drum-shaped base body has a circumferential surface that points radially outward relative to the rotational axis. This circumferential surface is a result of the drum-shaped base body, in which the rotational axis is arranged in particular in the center of the drum-shaped base body, so that it forms, in particular, an axis of rotational symmetry with respect to the basic shape of the base body.

[0015] The drum-shaped base body is particularly connected to the interface for connecting the instrument to the contra-angle or handpiece. Especially if the interface is designed as a shaft, the rotation axis can form an extension of the interface.

[0016] The instrument has a blade for removing bone chips and an opening. The blade is, in particular, a planing blade. The blade and opening are arranged and designed in such a way that bone chips removed by the blade can penetrate through the opening into the collection chamber.

[0017] This can be achieved, in particular, by having the opening extend along the cutting edge of the blade. In this context, the opening can, in particular, have an elongated shape. The blade itself can, in particular, form part of the edge of the opening. Such a design or arrangement of the opening promotes the penetration of bone chips into the collection space.

[0018] The blade can be formed integrally with the base body. In this case, the blade forms, in particular, an edge of the opening. Alternatively, the blade can also be attached to the base body of the instrument. This allows for greater flexibility in terms of manufacturing and material selection for the blade and base body. The blade attached to the base body is attached to the base body, in particular, in the area of ​​the edge of the opening.

[0019] The blade can have a rake angle of at least 000° and at most 045°, a wedge angle of at least 030° and at most 090° and / or a clearance angle of at least 000° and at most 045°, relative to a plane tangential to the lateral surface.

[0020] The problem is solved in particular by the fact that the blade is arranged on the outer surface of the base body. In this context, the opening through which the bone chips can penetrate into the collection space can also be arranged on the outer surface of the base body. The arrangement on the outer surface of the base body enables the bone chips to be removed in a more gentle manner for the patient. In order to reach the bone with the outer surface, the tissue covering the patient's bone does not have to be opened as far as with known instruments in which the blades are attached to the instrument oriented in the direction of the axis of rotation. The attachment of the blade to the outer surface also enables a comparatively flat, extensive and therefore gentle removal of the bone, whereas the drivable instruments known from the state of the art mill comparatively deep indentations into the bone.

[0021] The base body can furthermore have at least one further opening, in particular a plurality of further openings, particularly in the area of ​​the lateral surface. These openings have a smaller cross-section than the opening for the entry of the bone chips into the collection chamber and serve to allow fluids, such as blood and / or a cooling medium, to escape from the collection chamber during use of the instrument.

[0022] The lateral surface of the base body has, in particular, the shape of a lateral surface of a circular cylindrical body. The resulting geometry, with a lateral surface running parallel to the axis of rotation, represents, in geometric terms, the ideal realization of a lateral surface of a drum-shaped base body. Particularly with regard to adapting the instrument to specific applications, drum-shaped base bodies with a lateral surface that deviates geometrically from this ideal type would also be possible. For example, the lateral surface can also have a conical shape, so that the circumference of the lateral surface increases or decreases, in particular along a direction parallel to the axis of rotation. The lateral surface of the base body can accordingly have the shape of a lateral surface of a truncated cone-shaped body.

[0023] The instrument can have a removal opening at its end pointing away from the interface along the rotation axis for removing bone chips from the collection space. Removing the bone chips from the collection space through an opening located at the end pointing away from the interface is advantageous with regard to the accessibility of the collection space. Removing the bone chips from the collection space in a direction particularly parallel to the rotation axis, in conjunction with the blade arranged on the outer surface, enables a spatial separation of chip removal and chip removal with respect to the base body. In this way, a design optimized for the respective process can be implemented at the corresponding point on the base body.

[0024] The blade, with the course of its cutting edge, and / or the opening, with its main extension direction, can extend at an angle of at least 0° and / or at most 45° to a direction parallel to the rotation axis along the lateral surface. Due to the curvature of the lateral surface, particular attention must be paid to the local course at a particular position along the circumference of the lateral surface.

[0025] The surgical instrument assembly for use in dental, oral, and / or maxillofacial surgery comprises an instrument according to the above description and a dental angle or handpiece. The instrument is connected to the dental angle or handpiece in such a way that the instrument can be driven by the angle or handpiece in a rotating motion about a rotation axis. Such a surgical instrument assembly enables the surgeon to use the instrument with a haptically advantageous feel.

[0026] The instrument assembly can have a removal element arranged in the instrument's collection chamber when the instrument assembly is in use and removable from the instrument. The use state of the instrument assembly refers, in particular, to the state of the instrument assembly when the bone chips are being removed. The removal element is designed, in particular, such that bone chips can be removed from the collection chamber by removing the removal element from the instrument.

[0027] In other words, such a removal element essentially serves as a "carrier" for the bone chips as they are removed from the instrument. Due to the very small size of the bone chips, their removal is made considerably easier by such a removal element, thus significantly increasing the practical utility of the instrument. Shortening the removal time is particularly useful when removing larger quantities of bone chips, where the collection chamber is filled and emptied several times. The stress on the patient is significantly reduced due to the shortened procedure time.

[0028] In practical use of the instrument assembly, the removal element can be exchanged for another removal element when removing bone chips from the collection chamber. The surgeon can then continue the process of removing the bone chips with the instrument assembly, which is returned to its original state after the insertion of the additional removal element. At the same time, the previously removed bone chips can be separated from the removal element in a parallel workflow.

[0029] The removal element can have a closure region for closing the removal opening, which, when the instrument assembly is in use, closes the removal opening to prevent bone chips from escaping from the collection space. The closure region can, in particular, be disc-shaped. For example, the closure region can be a circular disc. The closure region extends, in particular, with its main extension directions perpendicular to the rotation axis. When the instrument assembly is in use, the closure region is arranged such that it closes the opening at the end of the base body, which points away from the interface along the rotation axis.

[0030] By arranging such a closure area on the removal element, the drum-shaped base body can be closed in a simple manner to prevent the unwanted escape of chips. At the same time, the removal of the removal element is uncomplicated, since the opening required for removal, which is closed when the instrument arrangement is in use, is automatically opened when the removal element is removed and does not have to be carried out in a separate operation.

[0031] The removal element can have a catching area to assist in the removal of the bone chips by the removal element during removal of the removal element from the instrument. Such a catching area, in particular, helps ensure that the bone chips are removed from the collection chamber as completely as possible, along with the removal element, when the removal element is removed from the instrument, and do not remain in it.

[0032] The entrainment area can, for example, be disk-shaped and / or extend with its main extension directions perpendicular to the rotation axis when the instrument is in use. In this way, the entrainment area can, in particular, represent a kind of barrier moving through the instrument during removal of the removal element, pushing the bone chips ahead of it and thus ensuring or supporting their entrainment by the removal element.

[0033] The entrainment region can be connected to the closure region, in particular, via a connecting region. The connecting region can be, in particular, an elongated, for example, rod-shaped region. The removal element can thus have, in particular, a spindle-like shape, in particular with the connecting region arranged between the closure region and the entrainment region serving as the "spindle axis." Such a design also has the advantage, particularly due to the comparatively small-volume structure of the connecting region, that the space available for the accumulation of bone chips in the collection chamber is only minimally reduced by the removal element.

[0034] When the instrument assembly is in use, the entrainment area is located primarily in the area of ​​the end of the drum-like base body facing away from the removal opening. This arrangement of the entrainment area means that it must move, at least approximately, through the entire base body during removal of the removal element. This allows the entrainment area to capture as much of the collected bone chips as possible.

[0035] The instrument assembly can include a tissue protection element that partially surrounds the main body of the instrument, so that the outer surface of the main body is accessible for removing bone chips from a first direction relative to the angled or handpiece and perpendicular to the rotation axis, and is at least partially shielded by the tissue protection element from a direction opposite to this first direction. Such a tissue protection element can, in particular, prevent unintentional injuries to the patient's soft tissue caused by the rotating instrument, in particular by the blade of the instrument.

[0036] The tissue protection element can be attached to the angled or handpiece. For this purpose, the tissue protection element can, in particular, have a clamping contour adapted to the outer contour of the handpiece or angled piece, with which the tissue protection element can be clamped and / or clipped onto the angled or handpiece. This allows, in particular, easy removal and attachment of the tissue protection element to the angled or handpiece.

[0037] The tissue protection element can be removed easily and quickly, particularly for removing bone chips from the base body, to facilitate the removal process. This is particularly advantageous if the tissue protection element surrounds the base body not only in the area of ​​the lateral surface, but also in the area of ​​the end of the base body facing away from the interface. This allows for even better soft tissue protection without the tissue protection element overly complicating the removal of bone chips.

[0038] The material of the tissue protection element can be a metallic material, such as steel or a titanium alloy, or a plastic, such as a transparent plastic. The latter material facilitates visual inspection during use of the instrument. What the aforementioned materials have in common is that they possess the necessary elasticity to allow the tissue protection element to be clamped onto the handpiece or contra-angle.

[0039] The instrument assembly can further include a cooling device for cooling the instrument with a cooling medium. Due to the friction generated during the removal of bone chips, the instrument may heat up, which can have damaging effects on the organic tissue that comes into contact with the instrument. To counteract this, the instrument can be cooled with a cooling medium using a cooling device.

[0040] The instrument arrangement can, in particular, comprise a supply device for supplying the cooling medium into a space arranged between the instrument and the tissue protection element. The supply device can, for example, be integrated into the angled or handpiece. Alternatively and / or additionally, such a supply device can be attached to the angled or handpiece. The supply device comprises, in particular, a line by means of which the cooling medium is guided from a reservoir to the instrument. In this context, the line can consist of a plurality of sections made of different materials; if necessary, the cooling device can also comprise a conveying device, for example a pump. This can be arranged along the line.

[0041] In this context, the supply device may also comprise a reservoir containing a cooling medium. The cooling medium may, for example, be a sterile liquid. The liquid may be, in particular, a physiological saline solution or water prepared for injection purposes.

[0042] The supply device guides the cooling medium, in particular, into a space located between the instrument and the tissue protection element. For this purpose, the line can be arranged such that it ends in a space located between the instrument, in particular the base body, and the tissue protection element.

[0043] The instrument arrangement can be designed such that the removal element is held in the instrument by means of the tissue protection element when the instrument is in use. In particular, if the tissue protection element also at least partially surrounds the instrument at its end facing away from the interface in the axial direction relative to the rotation axis, the tissue protection element can advantageously be used to secure the removal element.

[0044] The instrument assembly is particularly designed such that, when the tissue protection element is attached to the angled or handpiece, the tissue protection element engages with the removal element in such a way that the removal element is fixed in the position within the instrument that determines the instrument's use position. Alternatively or additionally, the instrument assembly is particularly designed such that, when the tissue protection element is removed from the angled or handpiece, the tissue protection element disengages from the removal element in such a way that the removal element can be removed from the instrument.

[0045] In particular, the removal element can be mounted on the tissue protection element axially with respect to the rotation axis and rotatable about the rotation axis relative to the tissue protection element. The mounting can be achieved, in particular, by a projection of the removal element abutting the tissue protection element, in particular engaging in a complementary recess of the tissue protection element, or by a projection on the tissue protection element abutting the removal element, in particular engaging in a corresponding complementary recess of the removal element.

[0046] The projection can be rounded, for example, spherical. This provides a rotatable mounting and, in particular, a centering function. The projection and, in particular, the recess can be arranged in the region of the axis of rotation.

[0047] Such a design enables easy changing of the removal elements for the purpose of removing bone chips from the instrument. It is only necessary to simultaneously disengage the projection from the recess when removing the tissue protection element from the angled or handpiece. If the tissue protection element is reattached to the angled or handpiece after replacing the removal element and before resuming removal of the bone chips, it is only necessary to ensure that the removal element is secured by the tissue protection element as intended. The instrument arrangement can in particular be designed such that, due to elastic deformation, in particular of the tissue protection element, an axial force (relative to the axis of rotation) is exerted on the removal element via the projection and recess when in use. The axial force is preferably very low so that only minimal friction occurs.Due to the slight pre-tension acting in the instrument assembly, the removal element can be held securely in the instrument when the instrument assembly is in use.

[0048] Further practical embodiments and advantages of the invention are described below in conjunction with the drawings. They show: Fig. 1 a schematic representation of an exemplary surgical instrument arrangement with a dental handpiece, Fig. 2 a schematic representation of an exemplary instrument arrangement with a dental contra-angle, Fig. 3 a schematic exploded view of the exemplary instrument arrangement from Fig. 2, Fig. 4 an exemplary surgical instrument for use as part of a surgical instrument assembly according to one of the Fig. 1 to 3, Fig. 5 a detailed view of an exemplary tissue protection element for an instrument arrangement according to one of the Fig. 2 or Fig. 3, Fig. 6 is a further detailed view of an exemplary surgical instrument for use in one of the exemplary instrument assemblies according to the Fig. 1 to 3.

[0049] The Fig. 1 to 3 schematically illustrated instrument arrangements for use in dental, oral, and / or oral, maxillofacial, and facial surgery each comprise a surgical instrument 10 for use in dental, oral, and / or oral, maxillofacial, and facial surgery. In the case of the Fig. 1, the surgical instrument assembly further comprises a dental handpiece 12. The instrument 10 is connected to the dental handpiece 12 such that the instrument 10 can be driven by the handpiece 12 in a rotating movement about a rotation axis X. In the case of the example shown in the Fig. 2 and Fig. 3, the surgical instrument assembly further comprises a dental contra-angle 14. The instrument 10 is connected to the dental contra-angle 14 such that the instrument 10 can be driven by the contra-angle 14 in a rotating movement about a rotation axis X.

[0050] In the examples shown, the instrument 10 has an interface 16. The interface can be a shaft, as in the example shown. Using the interface 16, the instrument 10 can be connected to a dental handpiece 12 or a dental contra-angle 14 such that the instrument 10 can be driven by the handpiece 12 or the contra-angle 14 in a rotating motion about the rotation axis X.

[0051] The exemplary instrument 10 further comprises a drum-shaped base body 18. A collecting chamber 20 for collecting bone chips is formed inside the base body 18. The drum-shaped base body 18 has a lateral surface 22 that points radially outward relative to the rotation axis X.

[0052] The instrument 10 further comprises a blade 24 for removing bone chips. The blade 24 can, in particular, be a plane blade, as in the example shown. The instrument 10 further comprises an opening 26. The opening 26 is arranged and designed such that bone chips removed by the blade 24 can penetrate through the opening 26 into the collection space 20. As shown in the examples shown, the opening 26 can extend along the blade 24. In the example shown, the opening 26 extends, for example, along the cutting edge 28 of the blade 24. As in the example shown, the blade 24 itself can form part of the edge of the opening 26.

[0053] The blade 24 can be formed in particular as shown in the Fig. 4 and Fig. 6 examples shown are formed in one piece.

[0054] We especially in the Fig. 6, the blade can have a rake angle of at least 000° and at most 045°, a wedge angle of at least 030° and at most 090° and / or a clearance angle of at least 000° and at most 045°, relative to a plane tangential to the lateral surface.

[0055] The blade 24 is arranged on the lateral surface 22 of the base body 18. The lateral surface 22 of the base body 18 can have the shape of a lateral surface of a circular cylindrical body, as in the example shown.

[0056] As in the example shown, especially at the Fig. 6, the instrument 10 can have a removal opening 30 for removing bone chips from the collection chamber 20 at its end pointing away from the interface 16 along the rotation axis X. The removal opening 30 can, in particular, as in the example shown, correspond in its cross-section to the cross-section of the collection chamber 20. This enables good accessibility to the collection chamber 20 for easy removal of the bone chips.

[0057] The blade 24 can, as in the example shown, in particular in Fig. 4, the cutting edge 28 extends parallel to the rotation axis X. Accordingly, the opening 26 can also extend parallel to the rotation axis X with its main extension direction.

[0058] The instrument arrangement, as exemplified in particular in the Fig. 1 to 3, in particular, has a removal element 32 arranged in the collection chamber 20 in a use state of the instrument arrangement and removable from the instrument 10. The removal element 32 is designed, in particular as in the example shown, such that bone chips can be removed from the collection chamber 20 by removing the removal element 32 from the instrument 10.

[0059] As in the example shown, the removal element 32 can have a closure region 34 for closing the removal opening 20. The closure region 34 can be disc-shaped, as in the example shown. In particular, the closure region 34 can extend in a plane perpendicular to the rotation axis X, as shown by way of example, when the removal element 32 is located in the collection chamber 20.

[0060] As in the example shown, the closure region 34 can be adapted with its outer contour to the removal opening 30. Furthermore, the removal element 32 can have a driving region 36, as in the example shown. The driving region 36 can be disc-shaped, as in the example shown. The driving region 36 can extend, as shown by way of example, in a plane perpendicular to the rotation axis X. As shown in particular in the Fig. 3, the driving region 36 can have an outer contour which is adapted to the inner contour of the collecting space 20 or to the inner contour of the base body 18 delimiting the collecting space 20.

[0061] As in the example shown, the driving region 36 can be connected to the closure region 34 via a connecting region 38. The removal element 32 can have a spindle-shaped design, as in the example shown. The connecting region 38 is, in particular, rod-shaped or bar-shaped, as shown by way of example.

[0062] The instrument arrangement can further comprise a tissue protection element 40. The tissue protection element 40 partially surrounds the base body 18 of the instrument 10, in particular as in the illustrated example, so that the lateral surface 22 of the base body is accessible from a first direction Y, relative to the angled piece 14 or the handpiece 12 and perpendicular to the rotation axis X, for removing the bone chips, and is shielded by the tissue protection element 40 from a direction opposite to this first direction Y. As in the example shown, a partial region of the tissue protection element 40 can be adapted to the angled piece 14 or the handpiece 12, such that the tissue protection element 40 can be easily attached to the angled piece 14 or the handpiece 12.

[0063] As in the illustrated example, the instrument assembly may comprise a cooling device for cooling the instrument 10 with a cooling medium. In this case, the instrument assembly may in particular comprise a supply device 42 for supplying the cooling medium into a space arranged between the instrument 10 and the tissue protection element 40. The exemplary supply device 42 in the form of a tube guided through the tissue protection element 40 is in particular Fig. 5 shown.

[0064] As in the example shown, the instrument arrangement 32 can be designed such that the removal element 32 is held in the instrument 10 by means of the tissue protection element 40 when the instrument arrangement 32 is in use. In particular, as in the example shown, the removal element 32 can be mounted on the tissue protection element 40 axially with respect to the rotation axis X and rotatable about the rotation axis X relative to the tissue protection element 40. This can be made possible, as in the example shown, by a rounded projection 44 which, when the instrument arrangement 32 is in use, projects in the region of the rotation axis X in the axial direction with respect to the rotation axis X towards the tissue protection element 40 and rests against it.

[0065] The base body 18 can be in the area of ​​the lateral surface, as shown in Fig.6, have at least one further opening 46 which improves the outflow of liquids such as blood or cooling medium from the collecting space 20.

[0066] The features of the invention disclosed in the present description, the drawings, and the claims may be essential, both individually and in any combination, for the realization of the invention in its various embodiments. The invention is not limited to the described embodiments. It may be varied within the scope of the claims and taking into account the knowledge of the person skilled in the art. List of reference symbols 10 surgical instruments 12 Handpiece 14 Angle piece 16 Interface 18 basic bodies 20 assembly room 22 lateral surface 24 blade 26 Opening 28 cutting edge 30 removal opening 32 removal element 34 Closure area 36 Takeaway area 38 Connection area 40 fabric protection element 42 Feeding device 44 lead 46 Further openings X rotation axis Y direction

Claims

[1] Surgical instrument (10) for use in dental, oral, and / or mouth, jaw, and facial surgery, wherein the instrument (10) has an interface (16) for connecting the instrument (10) to a dental angle (14) or handpiece (12), by means of which interface the instrument (10) can be connected to a dental angle (14) or handpiece (12) in such a way that the instrument (10) can be driven by the angle (14) or handpiece (12) in a rotating movement about a rotation axis (X), wherein the instrument (10) further has a drum-shaped base body (18), wherein a collecting space (20) for collecting bone chips is formed inside the base body (18), wherein the drum-shaped base body (18) has a lateral surface (22) (24) pointing radially outwards with respect to the rotation axis (X),wherein the instrument (10) has a blade for removing bone chips and an opening (26) which is arranged and designed such that bone chips removed by the blade (24) can penetrate through the opening (26) into the collecting space (20), , characterized by that the blade (24) and in particular the opening is arranged on the lateral surface (22) of the base body (18). [2] Instrument according to claim 1, characterized by that the lateral surface (22) of the base body (18) has the shape of a lateral surface of a circular cylindrical body. [3] Instrument according to claim 1 or 2, characterized by that the instrument (10) has a removal opening (30) for removing bone chips from the collecting space (20) at its end pointing away from the interface (16) along the rotation axis (X). [4] Surgical instrument arrangement for use in dental, oral, and / or mouth, jaw, and facial surgery, comprising an instrument (10) according to one of the preceding claims and a dental angle piece (14) or handpiece (12), wherein the instrument (10) is connected to the dental angle piece or handpiece in such a way that the instrument (10) can be driven by the angle piece (14) or handpiece (12) in a rotating movement about a rotation axis (six). [5] Instrument arrangement according to claim 4, characterized by in that the instrument arrangement has a removal element (32) which is arranged in the collecting space (20) and can be removed from the instrument (10) in a state of use of the instrument arrangement and which is designed in such a way that bone chips can be removed from the collecting space (20) by means of the removal of the removal element (32) from the instrument (10). [6] Instrument arrangement according to claim 5, characterized bythat the removal element (32) has a, in particular disc-shaped, closure region (34) for closing the removal opening (30), which, in the use state of the instrument, closes the removal opening (30) in order to prevent bone chips from escaping from the collecting space (20). [7] Instrument arrangement according to claim 5 or 6, characterized by that the removal element (32) has a entrainment region (36), which is connected in particular via a connecting region (38) to the closure region (34) and / or, in the state of use of the instrument (10), is arranged in the region of the end of the drum-like base body (18) facing away from the removal opening (30), to assist the entrainment of the bone chips by the removal element when the removal element (32) is removed from the instrument (10). [8] Instrument arrangement according to one of claims 4 to 7, characterized byin that the instrument arrangement has a tissue protection element (40), which is fastened in particular to the angle piece (14) or handpiece (12) and which partially surrounds the base body (18) of the instrument (10), so that the lateral surface (22) of the base body (18) is accessible for removing the bone chips from a first direction (Y) related to the angle piece (14) or handpiece (12) and perpendicular to the axis of rotation (X), and is at least partially shielded by the tissue protection element (40) from a direction opposite to this first direction. [9] Instrument arrangement according to one of claims 5 to 8, characterized by that the instrument arrangement has a cooling device for cooling the instrument (10) with a cooling medium, in particular wherein the instrument arrangement has a supply device (42) for supplying the cooling medium into an intermediate space arranged between the instrument and the tissue protection element. [10] Instrument arrangement according to claim 8 or 9, characterized by that the instrument arrangement is designed in such a way that the removal element (32) is held in the instrument (10) by means of the tissue protection element (40) in the use state of the instrument arrangement, in particular the removal element (32) can be mounted on the tissue protection element (40) axially with respect to the rotation axis (six) and rotatable about the rotation axis (six) relative to the tissue protection element (40).

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