Clamping device and tool holder

Abstract

The invention relates to a clamping device (10) for supporting a surgical tool in a clamped state on a perforated plate (78), which has a clamping apparatus (12) and a fastening apparatus (14). The clamping apparatus (12) has a number of clamping springs (16) each with a clamping limb (26) for clamping the surgical tool. The number of clamping springs (16) extend from a base (18) of the clamping apparatus (12) in a longitudinal direction (20) of the clamping device (10). The clamping limbs (26) define an insertion opening (30) for inserting the surgical tool into the clamping apparatus (12). The fastening apparatus (14) has a number of fastening springs (34) each with a fastening limb (40) for fastening the clamping device (10) to the perforated plate (78). The number of fastening springs (34) extend from a base (36) of the fastening apparatus (14) in the longitudinal direction (20) of the clamping device (10). Each fastening limb (40) has a fastening unit (44) for fastening the clamping device (10) to the perforated plate (78). The clamping apparatus (12) and the fastening apparatus (14) are connected to one another by a frictional, integral and / or interlocking connection.

Description

[0001] Title: Clamping device and tool holder

[0002] Description

[0003] The invention relates to a clamping device and a tool holder with the clamping device.

[0004] Clamping devices are often used to store surgical tools in a clamped state on a perforated plate.

[0005] DE 10 2021 106 109 A1, DE 10 2021 106 110 A1, and DE 10 2021 106 111 A1 each show clamping devices that are designed as a single piece. The object of the present invention is to provide a clamping device that has improved properties and is, in particular, cost-effective to manufacture. Furthermore, the object of the present invention is to provide a tool holder that has such a clamping device.

[0006] The invention solves these problems by providing a clamping device having the features of claim 1 and a tool holder having the features of claim 13. Advantageous embodiments and further developments of the invention emerge from the dependent claims.

[0007] A clamping device according to the invention is designed to support a surgical tool in a clamped state on a perforated plate. The clamping device has a clamping device and a fastening device. The clamping device has a number, in particular 1 to 10, preferably 1 to 4, of clamping springs, each with a clamping leg for clamping the surgical tool. The number of clamping springs extend from a base of the clamping device in a longitudinal direction of the clamping device. The clamping legs define an insertion opening for inserting the surgical tool into the clamping device. The fastening device has a number, in particular 1 to 10, preferably 1 to 4, of fastening springs, each with a fastening leg for fastening the clamping device to the perforated plate.The number of fastening springs extends from a base of the fastening device in the longitudinal direction of the clamping device. Each fastening leg has a fastening unit for, in particular releasably, fastening the clamping device to the perforated plate. The clamping device and the fastening device are connected to one another by means of a force-fitting, material-fitting and / or form-fitting connection. The clamping device and the fastening device can each be formed from a bent sheet metal.

[0008] The force-fitting, material-fitting, and / or form-fitting connection advantageously enables a modular design of the clamping device. For example, the modular design allows the fastening device and / or the clamping device to be used as standardized individual components in other devices. This allows the fastening device and / or the clamping device to be produced in larger quantities than is required for the manufacture of clamping devices, thereby reducing the cost per clamping device and making the clamping device more cost-effective to manufacture.

[0009] A further aspect of the clamping device may be that by forming the clamping device and the fastening device from a bent sheet metal, the production of the clamping device is simplified and cost-effective. In particular, the same or similar bending tools can be used to produce the clamping device and the fastening device, thereby enabling further cost savings.

[0010] The surgical tool can be an instrument head, in particular a drilling or milling tool with or without a tool shaft. The surgical tool can be designed to be insertable into a hand-held surgical instrument.

[0011] The surgical tool can be inserted into the clamping device by inserting the surgical tool into the insertion opening. The surgical tool can be transferred into the clamped state by inserting it into the clamping device. In the clamped state, each clamping spring can apply a spring force to the surgical tool, which presses the surgical tool against the other clamping springs. The spring force can be generated, for example, by the surgical tool preloading the number of clamping springs when inserted into the clamping device.

[0012] Each clamp spring may have an insertion bevel for inserting the surgical tool into the clamping device. The insertion bevels may limit the insertion opening. Insertion may be achieved by pressing the surgical tool against the insertion bevels, causing the surgical tool to slide along the insertion bevels and preloading the number of clamp springs until the clamped state of the surgical tool is reached.

[0013] The surgical tool can be inserted into the clamping device by a movement of the surgical tool parallel to, or in particular opposite to, the longitudinal direction. The longitudinal direction can run parallel to a longitudinal axis of the clamping device.

[0014] Each clamping leg can have a contact section for force- and / or form-fitting contact with the surgical tool in the clamped state. Each

[0015] Contact section can protrude radially inwards.

[0016] The number of clamping springs can be arranged, in particular evenly and / or circumferentially, distributed around the longitudinal axis.

[0017] The number of fastening springs can be arranged, in particular evenly and / or circumferentially, distributed around the longitudinal axis.

[0018] The base of the clamping device and / or the base of the fastening device can have a section that is formed as a circular disc. The base of the clamping device and / or the base of the fastening device can be arranged perpendicular to the longitudinal direction.

[0019] The base of the clamping device and / or the base of the fastening device can be arranged at a first end of the clamping device. The base of the clamping device and / or the base of the fastening device can form the first end of the clamping device. The base of the clamping device and / or the base of the fastening device can serve to limit the insertion depth of the surgical tool into the clamping device.

[0020] The insertion opening can be arranged at a second end of the clamping device opposite the first end. The fastening unit can be designed to fasten the clamping device to the perforated plate by means of a force-fitting, material-fitting and / or form-fitting connection. The fastening unit can have a locking element. The locking element can be designed to lock with the perforated plate. The locking element can be designed to fix the clamping device to the perforated plate by means of a locking connection formed between the locking element and the perforated plate.

[0021] To fasten the clamping device to the perforated plate, the fastening device can be displaced by pre-tensioning the number of fastening springs in such a way that the fastening unit can be at least partially inserted into a hole in the perforated plate, wherein by releasing the pre-tensioned number of fastening springs the fastening device is displaced in such a way that the clamping device is fastened to the perforated plate by means of the fastening device.

[0022] In particular, the clamping device and the fastening device can only be connected to one another by means of the force-fitting, material-fitting and / or form-fitting connection.

[0023] The clamping device and / or the fastening device can be formed from a material that contains iron. The clamping device and / or the fastening device can be formed from a flexurally elastic metal, preferably a spring steel, for example from the material 1.4310. The sheet metal from which the clamping device is formed can have a width and / or a length that is more than five times, in particular ten times, the thickness of the sheet metal from which the clamping device is formed.

[0024] The sheet metal from which the fastening device is formed can have a width and / or a length which is more than five times, in particular ten times, the thickness of the sheet metal from which the clamping device is formed.

[0025] In a further development of the clamping device, the sheet metal from which the clamping device is formed and the sheet metal from which the fastening device is formed are made of the same material. Additionally or alternatively, the sheet metal from which the clamping device is formed and the sheet metal from which the fastening device is formed have the same thickness.

[0026] Advantageously, forming the sheet metal of the clamping device and the sheet metal of the fastening device from the same material can facilitate the establishment of the connection between the clamping device and the fastening device. Preferably, the clamping device and the fastening device can be glued, clamped, or welded to one another particularly easily. In particular, welding the clamping device to the fastening device can be simplified due to the same melting point and the same physical and chemical properties of the material.

[0027] Further cost reductions can be achieved by making the sheet metal of the clamping device and the sheet metal of the fastening device from the same material and / or having the same thickness. In particular, the clamping device and the fastening device can be manufactured from the same sheet metal component, in particular the same sheet metal component. This allows the sheet metal required for manufacturing the clamping device to be standardized, thereby achieving further cost reductions.

[0028] In a further development of the clamping device, the clamping device and the fastening device are separate components that are connected to one another by means of a force-fitting, material-fitting, and / or form-fitting connection. The fastening device can be formed as a single piece. The clamping device can be formed as a single piece.

[0029] In a further development of the clamping device, the base of the clamping device and the base of the fastening device are connected to one another by means of the force-fitting, material-fitting and / or form-fitting connection.

[0030] Advantageously, this makes it possible to dispense with additional sections for producing the force-fitting, material-fitting and / or form-fitting connection, thereby achieving a particularly compact design of the clamping device.

[0031] In a further development of the clamping device, the clamping device and / or the fastening device are designed as a stamped and bent part. Advantageously, such a design of the clamping device and / or the fastening device enables cost-effective production of the clamping device. In a further development of the clamping device, the clamping device has a first locking element. The fastening device has a second locking element corresponding to, preferably complementary to, the first locking element. The positive connection is a locking connection formed by the first locking element and the second locking element. The first locking element can have a locking opening. The second locking element can have a locking lug. The locking lug can engage in the locking opening to form the locking connection.

[0032] In a further development of the clamping device, the clamping device has a number of bent bending tabs. The positive connection is formed by the fastening device engaging with the bent bending tabs of the clamping device. Additionally or alternatively, the fastening device has a number of bent bending tabs. The positive connection is formed by the clamping device engaging with the bent bending tabs of the fastening device. The positive connection can be an overlapping of the clamping device and the fastening device with one another.

[0033] In a further development of the clamping device, the positive connection is formed by means of a clinching connection. The clinching connection can also be referred to as a pressure-joining connection, clinching connection, press-joining connection or toxing connection. In a further development of the clamping device, the positive connection is formed by means of a deep-drawn connection. The clamping device can have an opening. A section of the fastening device can be driven through the opening in the clamping device by means of deep drawing. The section of the fastening device driven through the opening in the clamping device can be formed in such a way that the section of the fastening device bears at least partially against the clamping device to form the positive connection. The base of the clamping device can have the opening.The bottom of the fastening device may have the section .

[0034] Alternatively, the fastening device can have an opening. A section of the clamping device can be driven through the opening in the fastening device by deep drawing. The section of the clamping device driven through the opening in the fastening device can be formed in such a way that the section of the clamping device bears at least partially against the fastening device to form the positive connection. The base of the fastening device can have the opening. The base of the clamping device can have the section.

[0035] In a further development of the clamping device, the positive connection is formed by means of a caulking connection.

[0036] In a further development of the clamping device, the material-locking connection is formed by means of an adhesive connection, a welded connection, in particular a spot welded connection, and / or a soldered connection.

[0037] In a further development of the clamping device, the fastening unit has a first projection and a second projection. The fastening unit is designed to accommodate the perforated plate between the first projection and the second projection for fastening the clamping device to the perforated plate, in particular while forming a positive connection.

[0038] The first projection and the second projection can be arranged opposite one another. The first projection and the second projection can be arranged adjacent to one another, in particular in the longitudinal direction. The first projection and the second projection can extend in a direction perpendicular to the longitudinal direction. The first projection and the second projection can protrude at least partially radially outward, in particular be bent radially outward.

[0039] A value of a distance between the first projection and the second projection can be equal to or greater than a value of a thickness of the perforated plate. The fastening unit can be designed to be passed at least partially through a hole in the perforated plate, so that when the clamping device is fastened to the perforated plate, the perforated plate is arranged between the first projection and the second projection.

[0040] A tool holder according to the invention for storing a surgical tool in a proper position comprises a clamping device as described above and the perforated plate with a hole. The clamping device is attached to the hole in the perforated plate by means of the fastening unit.

[0041] The hole may be configured for inserting the surgical tool into the clamping device. The insertion opening may be located within the hole.

[0042] The fastening unit can be at least partially passed through the hole of the perforated plate, so that the perforated plate is arranged between the first projection and the second projection for the purpose of fastening the clamping device to the perforated plate. The first projection can be arranged on an upper side of the perforated plate, and the second projection can be arranged on an underside of the perforated plate.

[0043] In a further development of the tool holder, the perforated plate has a plurality of prongs that define the hole. Each fastening leg is arranged between two adjacent prongs. Advantageously, the prongs can secure the clamping device against unintentional rotation.

[0044] In a further development of the tool holder, the tool holder has an additional perforated plate for securing the clamping device against rotation. The additional perforated plate is arranged parallel to and offset from the perforated plate.

[0045] The perforated plate and the further perforated plate can be connected to one another, in particular by means of a frame. The further perforated plate can have a number, in particular 20 to 200, of holes, each hole being square in shape. The holes in the further perforated plate can be arranged next to one another and one below the other, so that rows of holes are formed.

[0046] The holes in the further perforated plate can be formed by straight webs. The webs can have a number of first webs and a number of second webs, wherein the number of first webs is arranged perpendicular to the number of second webs.

[0047] The base of the clamping device and / or the base of the fastening device can be arranged between the perforated plate and the further perforated plate.

[0048] Further advantages and advantageous embodiments of the invention can be gathered from the figures, their description, and the patent claims. All features disclosed in the figures, their description, and the patent claims can be essential to the invention both individually and in any combination. They show:

[0049] Fig. 1 is an oblique view of a clamping device,

[0050] Fig. 2 is a further oblique view of the clamping device of Fig. 1,

[0051] Fig. 3 is a plan view of the clamping device of Fig. 1,

[0052] Fig. 4 is an oblique view of a fastening device of the

[0053] Clamping device of Fig. 1, Fig. 5 is an oblique view of a clamping device of the clamping device of Fig. 1,

[0054] Fig. 6 is an oblique view of another embodiment of a clamping device,

[0055] Fig. 7 is a further oblique view of the clamping device of Fig. 6,

[0056] Fig. 8 is an oblique view of a clamping device of the clamping device of Fig. 6,

[0057] Fig. 9 is an oblique view of another embodiment of a clamping device,

[0058] Fig. 10 is a further oblique view of the clamping device of Fig. 9,

[0059] Fig. 11 is an oblique view of a fastening device of the clamping device of Fig. 9,

[0060] Fig. 12 is an oblique view of another embodiment of a clamping device,

[0061] Fig. 13 is a further oblique view of the clamping device of Fig. 12,

[0062] Fig. 14 is an oblique view of another embodiment of a clamping device,

[0063] Fig. 15 is a further oblique view of the clamping device of Fig. 14, Fig. 16 is an oblique view of a fastening device of the

[0064] Clamping device of Fig. 14,

[0065] Fig. 17 an oblique view of a tool holder,

[0066] Fig. 18 is a view of a detail XVI according to Fig. 17, and

[0067] Fig . 19 another oblique view of the tool holder of

[0068] Fig . 17 .

[0069] Fig. 1 to 3 show a clamping device 10 from different viewing directions. The clamping device 10 is designed to support a surgical tool in a clamped state on a perforated plate.

[0070] The clamping device 10 has a clamping device 12 and a fastening device 14. The clamping device 12 and the fastening device 14 are shown separately from one another in Figs. 4 and 5 for reasons of clarity.

[0071] The clamping device 12 and the fastening device 14 are two separate components. The clamping device 12 and the fastening device 14 are each formed as a single piece. The clamping device 12 and the fastening device 14 are each a stamped and bent part.

[0072] The clamping device 12 has three clamping springs 16, see Fig. 5. The clamping springs 16 extend from a base 18 of the clamping device 12 and along a longitudinal direction 20 of the clamping device 10. The longitudinal direction 20 of the clamping device 10 runs parallel to a longitudinal axis 22 of the clamping device 10. The clamping springs 16 are arranged evenly distributed around the longitudinal axis 22.

[0073] The base 18 of the clamping device 12 is formed in sections by a circular disc 24. The base 18 of the clamping device 12 is arranged perpendicular to the longitudinal direction 20.

[0074] Each clamping spring 16 has a clamping leg 26 for clamping the surgical tool and a spring arch 28. The spring arch 28 is arranged between the base 18 of the clamping device 12 and the clamping leg 26. The clamping leg 26 is designed to contact the surgical tool.

[0075] The clamping legs 26 define an insertion opening 30 for inserting the surgical tool into the clamping device 10.

[0076] Each clamping spring 16 has an insertion bevel 32 for inserting the surgical tool into the clamping device 10. The insertion bevels 32 delimit the insertion opening 30. Each insertion bevel 32 is arranged such that the insertion bevel 32 and the longitudinal direction 20 form an acute angle to one another. The insertion bevels 32 and the base 18 of the clamping device 12 are arranged at opposite ends of the clamping device.

[0077] The surgical tool is inserted or plugged into the clamping device 10 by inserting the surgical tool into the insertion opening 30 and moving the surgical tool in the direction of the base 18 of the clamping device 12. The movement is parallel to the longitudinal axis 22 and opposite to the longitudinal direction 20. This movement brings the surgical tool into contact with the insertion bevels 32. The surgical tool slides along the insertion bevels 32 and, in doing so, pre-tensions the clamping springs 16 so that the surgical tool is pressed against the remaining clamping springs 16 by a spring force. The surgical tool can be inserted into the clamping device 12 until it comes into contact with the base 18 of the clamping device 12. In other words, the base 18 of the clamping device 12 limits the insertion depth of the surgical tool into the clamping device 10.

[0078] By inserting the surgical tool into the clamping device 10, the surgical tool is transferred into a clamped state. If the clamping device 10 is attached to the perforated plate, the surgical tool is fixed in the clamped state to the other perforated plate by means of the clamping springs 16 in such a way that the surgical tool is secured against falling out of the clamping device 10 and / or against unintentional displacement relative to the perforated plate.

[0079] The fastening device 14 has three fastening springs 34, see Fig. 4. The fastening springs 34 extend from a base 36 of the fastening device 14 and along the longitudinal direction 20 of the clamping device 10. The fastening springs 34 are arranged uniformly distributed around the longitudinal axis 22.

[0080] The base 18 of the fastening device 14 is formed in sections by a circular disc 38. The base 38 of the fastening device 14 is arranged perpendicular to the longitudinal direction 20.

[0081] Each fastening spring 34 has a fastening leg 40 for fastening the clamping device 10 to the perforated plate and a spring arch 42. The spring arch 42 is arranged between the base 36 of the fastening device 14 and the fastening leg 40. The fastening leg 40 is designed to fasten the clamping device 10 to the perforated plate.

[0082] Each fastening leg 40 has a fastening unit 44 for releasably fastening the clamping device 10 to the perforated plate. Each fastening unit 44 has four projections 46, 48, 50, 52. The two projections 46, 48 and the two projections 50, 52 are arranged on opposite sides of the fastening spring 34. Each projection 46, 48, 50, 52 extends in a direction perpendicular to the longitudinal direction 20. Each projection 46, 48, 50, 52 projects radially outward, see also Fig. 3. Each projection 46, 48, 50, 52 is bent radially outward.

[0083] The two projections 46, 48 are arranged adjacent to one another and are spaced apart from one another by a distance 54, see Fig. 4. The two projections 50, 52 are arranged adjacent to one another and are spaced apart from one another by a distance 56. The distance 54 between the two projections 46, 48 and the distance 56 between the two projections 50, 52 are the same. A value of the two distances 54, 56 of the projections 46, 48, 50, 52 is each equal to a value of a thickness of the perforated plate. As a result, the perforated plate can be arranged between the two projections 46, 48 and the two projections 50, 52 to form a positive connection, particularly acting in the longitudinal direction 20.

[0084] To fasten the clamping device 10 to the perforated plate, the fastening springs 34 are pre-tensioned in the direction of the longitudinal axis 22, reducing the distance between the fastening legs 40. The fastening device 14 is then at least partially inserted into a hole in the perforated plate, and the pre-tension of the fastening springs 34 is partially released. As a result, the fastening legs 40 are displaced radially outward, away from the longitudinal axis 22, and the perforated plate is arranged between the two projections 46, 48 and the two projections 50, 52. The clamping device 10 is fastened, in particular fixed, to the perforated plate by means of the fastening device 14.

[0085] 1 to 5, the clamping device 12 and the fastening device 14 are connected to one another, in particular only, by means of a material-to-material connection. Figs. 1 and 2 show that the base 18 of the clamping device 12 and the base 36 of the fastening device 14 are connected to one another by means of the material-to-material connection. In other words, the base 18 of the clamping device 12 and the base 36 of the fastening device 14 are glued to one another. The material-to-material connection is an adhesive connection. In the illustrated embodiment of Figs. 1 to 5, the base 18 of the clamping device 12 and the base 36 of the fastening device 14 are connected to one another in such a way that the base 36 of the fastening device 14 forms a first end of the clamping device 10. The insertion opening 30 is arranged at a second end opposite the first end of the clamping device 10.

[0086] In Figs. 6 to 16 further embodiments of the clamping device 10 of Figs. 1 to 5 are shown, wherein the same reference numerals are used for identical and functionally equivalent elements and in this respect reference can be made to the above explanations regarding the embodiment of Figs. 1 to 5, so that essentially only the existing differences are discussed.

[0087] In the illustrated embodiment of Figs. 6 to 8, the clamping device 12 and the fastening device 14 are connected to one another, in particular only, by means of a positive connection. The positive connection is formed by means of a deep-drawn connection.

[0088] Fig. 8 shows the clamping device 12. The base 18 of the clamping device 12 has an opening 58. The opening 58 is circular. A section 60 of the base 36 of the fastening device 14 is driven through the opening 58 by deep drawing, in particular without deforming the clamping device 12. The section 60 driven through the opening 58 is reshaped in such a way that the section 60 bears at least partially against the clamping device 12 to form the positive connection. The reshaped section 60 driven through the opening 58 is mushroom-shaped. A section 62 of the base 36 of the fastening device 14, which section has not been driven through the opening 58, bears against a first side of the base 18 of the clamping device 12, in particular the side facing away from the insertion opening 30, see Fig. 7 .The section 60 driven through the opening 48 rests on a second side of the base 18 of the clamping device 12 opposite the first side, in particular facing the insertion opening 30.

[0089] In the illustrated embodiment of Figs. 9 to 11, the clamping device 12 and the fastening device 14 are connected to one another, in particular only, by means of a positive connection. The positive connection is formed by overlapping the clamping device and the fastening device.

[0090] The clamping device 12 has three bending tabs 64 (see Fig. 10). The bending tabs 64 are arranged on the base 18 of the clamping device 12. The fastening device 14 has three tab openings 66 for inserting the bending tabs 64. The tab openings 66 are arranged on the base 36 of the fastening device 14 (see Fig. 11).

[0091] The positive connection is established by inserting the bending tabs 64 through the tab openings 66 and then bending the bending tabs 64. In other words, the positive connection is formed by enclosing the fastening device 14, in particular the base 36 of the fastening device 14, with the bent bending tabs 64 of the clamping device 12.

[0092] In the illustrated embodiment of Fig. 12 and 13, the clamping device 12 and the fastening device 14 are connected to one another, in particular only, by means of a positive connection. The positive connection is formed by means of a clinching connection 68. The clinching connection 68 is formed by clinching the base 36 of the fastening device 14 and the base 18 of the clamping device 12. The two bases 18, 36 have a dome-shaped section 70. The clinching connection 68 is formed within the dome-shaped section 70. The dome-shaped section 70 extends in the longitudinal direction 20.

[0093] Before the clinching connection 68 is produced, the base 36 of the fastening device 14 and the base 18 of the clamping device 12 are flat. The clinching connection 68 is produced by arranging the flat base 36 of the fastening device 14 on the flat base 18 of the clamping device 12 and subsequently penetrating a punch into the material of the two bases 18, 36 to deform the two bases 18, 36.

[0094] 14 to 16, the clamping device 12 and the fastening device 14 can be connected to one another, in particular only, by means of a positive connection. The positive connection can be formed by means of a latching connection. The fastening device 14 has three first latching elements 72, see Fig. 16. The first latching elements 72 are arranged on the base 36 of the fastening device 14. The first latching elements 72 extend in the longitudinal direction 20. The first latching elements 72 each have a nose-shaped section 74. Each nose-shaped section 74 extends in a radially inward direction.

[0095] The clamping device 12 can have three second locking elements corresponding to the first locking elements 72. Each second locking element can be a locking opening into which the nose-shaped portion 74 of the respective first locking element 72 engages, forming the locking connection.

[0096] Fig. 17 shows a tool holder 100 for storing the surgical tool in a designated position. The tool holder 100 has a perforated plate 78 with a plurality of holes 80. Each hole 80 is star-shaped. The star shape is formed by prongs 82 of the perforated plate 78 that delimit the hole 80. Each hole is delimited by six prongs 82 of the perforated plate 78.

[0097] The tool holder 100 has a plurality of previously described clamping devices 10, each of which is fastened to a hole 80. In the illustrated embodiment of Fig. 17, five clamping devices 10 are fastened to five holes 80, for example.

[0098] Fig. 18 shows a hole 80 of the perforated plate 78 and a clamping device 10 of the tool holder 100 fastened to the perforated plate 78 in detail. Each fastening leg 40 of the clamping device 10 is arranged between two adjacent prongs 82. The perforated plate 78 is encompassed by the fastening unit 44 of the clamping device 10. As a result, the clamping device 10 is fastened to the hole 80 of the perforated plate 78 by means of the fastening unit 44. The two projections 46, 50 are arranged on one side of the perforated plate 78 and the two projections 48, 52 are arranged on a side of the perforated plate 78 opposite the side.

[0099] Fig. 19 shows the tool holder 100 from a view opposite to Fig. 18. The tool holder 100 has a further perforated plate 84 for securing the clamping devices 10 against rotation. The further perforated plate 84 is arranged parallel to and offset from the perforated plate 78. The perforated plate 78 and the further perforated plate 84 are connected to one another by means of a frame (not shown).

[0100] The additional perforated plate 84 has a plurality of holes 86. Each hole 86 is square in shape. The holes 86 of the additional perforated plate 84 are formed by straight webs 88. The holes 86 of the additional perforated plate 84 are arranged next to and below one another in such a way that rows of holes are formed.

[0101] The clamping devices 10 are arranged at least partially between the perforated plate 78 and the perforated plate 84. The bottom

[0102] 18 of the clamping device 12 and the bottom 36 of the fastening device 14 are arranged between the perforated plate 78 and the further perforated plate 84.

[0103] In Fig. 19 it can be seen that a viewer of Fig.

[0104] 19, from left to right, the clamping device 10 of Figs. 9 to 11, the clamping device 10 of Figs. 14 to 16, the clamping device 10 of Figs. 6 to 8, the clamping device 10 of Figs. 12 and 13 and the clamping device 10 of Figs. 1 to 5 are fastened to the perforated plate 78.

[0105] As the embodiments shown and explained make clear, the invention provides a clamping device and a tool holder that are cost-effective to manufacture.

Claims

Patent claims 1. Clamping device (10) for supporting a surgical Tool in a clamped state on a perforated plate (78), comprising: a clamping device (12), and a fastening device (14), wherein the clamping device (12) has a number of Clamping springs (16), each with a clamping leg (26) for clamping the surgical tool, wherein the number of clamping springs (16) extends from a base (18) of the clamping device (12) in a longitudinal direction (20) of the clamping device (10), wherein the clamping legs (26) define an insertion opening (30) for inserting the surgical tool into the clamping device (12), wherein the fastening device (14) has a number of fastening springs (34), each with a fastening leg (40) for fastening the clamping device (10) to the perforated plate (78), wherein the number of fastening springs (34) extends from a base (36) of the fastening device (14) in the longitudinal direction (20) of the clamping device (10), wherein each fastening leg (40) has a fastening unit (44) for fastening the clamping device (10) to the perforated plate (78), characterized inthat the clamping device (12) and the fastening device (14) are connected to one another by means of a force-fitting, material-fitting and / or form-fitting connection, and, the clamping device (12) and the fastening device (14) are each formed from a bent sheet.

2. Clamping device (10) according to claim 1, wherein the sheet metal from which the clamping device (12) is formed and the sheet metal from which the fastening device (14) is formed are formed from the same material, and / or wherein the sheet metal from which the clamping device (12) is formed and the sheet metal from which the fastening device (14) is formed have the same thickness.

3. Clamping device (10) according to one of the preceding claims, wherein the clamping device (12) and the fastening device (14) are components formed separately from one another, which are connected to one another by means of the force-fitting, material-fitting and / or form-fitting connection.

4. Clamping device (10) according to one of the preceding claims, wherein the base (18) of the clamping device (12) and the base (36) of the fastening device (14) are connected to one another by means of the force-fitting, material-fitting and / or form-fitting connection.

5. Clamping device (10) according to one of the preceding claims, wherein the clamping device (12) and / or the fastening device (14) are designed as a stamped and bent part.

6. Clamping device (10) according to one of the preceding claims, wherein the clamping device (12) has a first locking element, wherein the fastening device (14) has a second locking element corresponding to, preferably complementary to, the first locking element, wherein the positive connection is a locking connection formed by the first locking element and the second locking element.

7. Clamping device (10) according to one of the preceding claims, wherein the clamping device (12) has a number of bent bending tabs (64), wherein the positive connection is formed by encompassing the fastening device (14) with the bent bending tabs (64) of the clamping device (12), and / or wherein the fastening device (14) has a number of bent bending tabs, wherein the positive connection is formed by encompassing the clamping device (12) with the bent bending tabs of the fastening device (14).

8. Clamping device (10) according to one of the preceding claims, wherein the positive connection is formed by means of a clinching connection.

9. Clamping device (10) according to one of the preceding claims, wherein the positive connection is formed by means of a deep-drawn connection.

10. Clamping device (10) according to one of the preceding claims, wherein the positive connection is formed by means of a caulking connection.

11. Clamping device (10) according to one of the preceding claims, wherein the material connection is formed by means of an adhesive connection, a welded connection, in particular a spot welded connection, and / or a soldered connection.

12. Clamping device (10) according to one of the preceding claims, wherein the fastening unit (44) has a first projection (46, 50) and a second projection (48, 52), wherein the fastening unit (44) is designed to receive the perforated plate (78) between the first projection (46, 50) and the second projection (48, 52) for fastening the clamping device (10) to the perforated plate (78).

13. Tool holder (100) for storing a surgical tool in a designated position, comprising: a clamping device (10) according to one of the preceding claims, and the perforated plate (78) with a hole (80), wherein the clamping device (10) is fixed to the hole (80) of the perforated plate by means of the fastening unit (44) (78) is attached.

14. Tool holder (100) according to claim 13, wherein the hole plate (78) has a plurality of prongs (82) defining the hole (80), each fastening leg (40) being arranged between two adjacent prongs (82).

15. Tool holder (100) according to claim 13 or 14, - wherein the tool holder (100) has a further perforated plate (84) for securing the clamping device (10) against twisting, wherein the further perforated plate (84) is arranged parallel and offset to the perforated plate (78).

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