Expansion sleeve and tool set

Abstract

The present disclosure relates to a receiving expansion sleeve (2) for insertably receiving a tool set (100) of surgical tools, having a fastening section (14) which is adapted and arranged to be suspendedly fastened on a holding device (50) of the tool set (100) such that the fastening section passes through a bore (58) of the holding device (50) and axially opposite to the insertion direction of a tool to be inserted and radially from behind acts on the material of the holding device (50) surrounding the bore (58). The present disclosure also relates to a tool set (100) for insertably receiving surgical tools, having such a receiving expansion sleeve (2) and a holding device (50).

Description

Technical Field

[0001] This disclosure relates to a receiving expansion sleeve for an insert-supported tool assembly for receiving surgical instruments, and a tool assembly having the receiving expansion sleeve and a retaining device. Background Technology

[0002] In modern surgery, multiple different instrument heads / tools, such as drilling tools or milling tools (with tool shanks), are used, each removably inserted into a handpiece with an instrument drive / motor. This allows the surgeon to change the instrument shank with the distal instrument head / effect inserted into the handpiece as needed during operation of the handpiece. To allow the surgeon to access these instrument heads (hereinafter referred to simply as tools) as easily as possible, the tools are typically stored in an orderly manner in a surgical tool set, as is known, for example, in the manual use of drill sets. Here, to avoid damaging the tools and to ensure quick retrieval of the required tool, the tools are not stored loosely, but rather secured in a retaining expansion sleeve, which in turn is inserted into or secured in the hole array (in the simplest case, a perforated plate) of the tool set.

[0003] In this way, the tools are arranged coaxially / parallel to each other.

[0004] This type of conventional tool set for storing / preserving surgical instruments is prior art. These known tool sets generally have a first perforated plate (so-called a sleeve plate), which is constructed as a plate of typically metal with an array of holes consisting of circular holes of different sizes. Receiving expansion sleeves for receiving the tools are inserted into or fixed in the holes. Each receiving expansion sleeve has an insertion port for a specific surgical instrument. The surgical instrument has a distal tool engagement section and a proximal shank section, wherein receiving expansion sleeves with tool receiving ports of different diameters allow for correct and precise accommodation of tools with different shank diameters. Furthermore, the tool set may have a second perforated plate (so-called a base plate) connected to the first perforated plate, which is spaced parallel to the first perforated plate and defines the insertion depth of the surgical instrument.

[0005] In addition to careful storage of surgical instruments, thorough cleaning and sterilization of surgical instruments are essential. Traditional expansion sleeves are constructed as robust plastic sleeves with inserts that can expand radially with elasticity. While this reliably holds the inserted instruments, it makes it difficult or even prevents adequate circulatory flow of cleaning liquids or gases around the instruments held within.

[0006] To improve the flow around the tool, for example, an expansion sleeve is known from EP 3 154 095 B1. This expansion sleeve has a hollow body made of plastic with radial perforations and an inwardly extending clamping arm, preferably made of plastic or metal and equipped with filaments, inserted into the hollow body. Here, the relatively robust hollow plastic body is used to secure the expansion sleeve to a retaining device with an orifice plate, while the filament-equipped clamping arm is used to make point-like contact with the tool inserted into the expansion sleeve with the smallest possible contact surface.

[0007] While these known expansion sleeves are characterized by high stability, they also have the disadvantage that, although the hollow plastic body has radial perforations to allow the entry and flushing of cleaning fluids, it is still possible for tissue residues and similar contaminants to accumulate at the expansion sleeve.

[0008] Another decisive drawback of these known expansion sleeves is the high cost and complexity of manufacturing, installing, and assembling the hollow plastic body. To withstand the high temperatures during sterilization, the plastic components must be made of special heat-resistant plastics, increasing manufacturing costs. PEEK, a material that is expensive, difficult to process, and has a limited lifespan, is frequently used to meet medical requirements. Furthermore, in the case of multi-piece constructions of expansion sleeves, especially those with a hollow plastic body and inserted or inserted metal clamps, the components must be assembled manually. This is not only time-consuming but also carries the risk of damaging the expansion sleeve or incorrectly assembling it during installation. In addition, contaminants on plastic often adhere for longer periods due to their positive surface charge than on other materials, such as metals, further complicating the cleaning of the expansion sleeve. The robust structure of conventional tool sets and their plastic construction also prove disadvantageous when drying the tool set after cleaning.

[0009] However, in the absence of a plastic hollow body, the tool sets and metal clamping arms that accommodate the expansion sleeve inserted into the plastic hollow body, as known in the prior art, cannot or are not stably secured to the holding device of the known tool sets. Summary of the Invention

[0010] Therefore, the objective of this disclosure is to provide a tool set containing an expansion sleeve and a tool set that is simple and inexpensive to manufacture, ensures effective cleaning and / or disinfection, and achieves a simple yet stable fastening of the expansion sleeve in a tool holding device.

[0011] This task is accomplished by the inclusion of an expansion sleeve in the tool set according to the invention, and by the tool set according to the invention.

[0012] Therefore, the core of this disclosure lies in the fact that, in addition to the clamping arm for holding the tool, a fastening arm is constructed on the receiving expansion sleeve for fastening the receiving expansion sleeve to the holding device. Preferably, a fastening section is constructed on the fastening arm that is radially outwardly bent into a U-shaped profile. The profile of this fastening section is preferably radially outward and open in the insertion direction of the tool to be inserted, so that the fastening section can be suspended on the holding device and axially act on the holding device from behind in the opposite direction to the insertion direction of the tool to be inserted, directly fitting the holding device and radially acting on the holding device from behind, that is, encircling the holding device.

[0013] More specifically, the receiving expansion sleeve is used for inserting, particularly vertically, surgical instruments. The receiving expansion sleeve has a number of circumferentially spaced, elastically deformable clamping arms. These clamping arms are configured with insertion ports for inserting the instrument on the open end side of the receiving expansion sleeve and have radially inwardly projecting engagement sections for force-fitting and / or form-fitting contact with the instrument to retain it. The clamping arms are preferably made of metal and are evenly distributed in the circumferential direction of the receiving expansion sleeve. Furthermore, the receiving expansion sleeve has a preferably metallic collection bottom, which is formed on the end section of the receiving expansion sleeve opposite the insertion port, and the clamping arms extend axially from this stop bottom or collection bottom toward the open end side. Preferably, the clamping arms can be formed on the collection bottom. The collection bottom defines the insertion depth of the instrument to be inserted.

[0014] According to one aspect of this disclosure, in order to form-fit the receiving expansion sleeve to a retaining device preferably configured as an orifice plate in the tool assembly, the receiving expansion sleeve has a number of fastening sections, which are adapted and arranged to be suspended and fastened to the retaining device such that the fastening sections pass through the orifice of the retaining device and encircle the material surrounding the orifice of the retaining device opposite to the insertion direction of the tool to be inserted. That is, the material of the retaining device is form-fitted / enclosed / enclosed from multiple sides, for example at greater than 180° and less than 360°, preferably at about 270°, by each of the fastening sections. Here, opposite to the insertion direction of the inserted tool means that the fastening sections define the displacement of the receiving expansion sleeve relative to the retaining device in the insertion direction (i.e., in the axial direction). This has the advantage that a stable, easily installable, and releasable form-fit fastening of the receiving expansion sleeve is possible through the suspension of the fastening sections. Furthermore, for suspension fastening, it is not necessary or only slightly structurally adapted to the retaining device, because the fastening section can be suspended as a form-fitting fitting on the existing holes of the perforated plate or on the web that separates these holes from each other.

[0015] According to a preferred embodiment, the fastening section can be adapted and configured such that it acts radially and axially from the rear, i.e., encircles the web of the retaining device, which separates adjacent holes of the retaining device from each other. This axial and radial action from the rear creates not only a form-fitting axial stop but also a form-fitting radial stop for securing the receiving expansion sleeve to the retaining device. In particular, the fastening section can act radially and elastically from the rear on the outer side of the retaining device, thereby limiting inward radial displacement of the receiving expansion sleeve. Specifically, the fastening section can act axially and elastically from the rear on the axial side of the retaining device opposite to the bottom of the collection, thereby limiting axial displacement of the receiving expansion sleeve in the tool insertion direction (downward).

[0016] According to a preferred embodiment, the fastening section may have a generally U-shaped and / or hook-shaped profile. The profile of the fastening section may have an insertion port (hanging port), which is preferably radially outward and / or preferably axially oriented towards the bottom of the collection, i.e., opposite to the insertion direction of the tool. That is, a first section of the fastening arm extends axially towards the open end from the bottom of the collection, a second section of the fastening arm directly connected to the first section extends radially outward, and a third section of the fastening arm directly connected to the second section extends axially towards the bottom of the collection. When the insertion port is radially outward oriented, the fastening section can be mounted radially inward on the retaining device. When the insertion port is axially oriented opposite to the insertion direction of the tool, the fastening section can be mounted on the retaining device in the insertion direction of the tool. Therefore, the expansion sleeve can also be inserted into the retaining device (from above) along with the tool.

[0017] According to a preferred embodiment, the receiving expansion sleeve may have a number of circumferentially spaced, particularly (radially) elastically deformable, preferably metallic, fastening arms, which extend axially from the bottom of the collection toward the open end side, and whose free end sections form fastening sections for suspension fastening. In other words, the fastening arms and clamping arms extend outwardly in a star shape from the bottom of the collection. By constructing the fastening sections on the free end sections and elastically constructing the fastening arms, the fastening arms can be easily made to elastically deform, for example, radially inward, for mounting or removing the receiving expansion sleeve from the retaining device, so that the fastening arms can be suspended on the retaining device with their, for example, radially outwardly oriented insertion ports. That is, the fastening sections can axially (particularly opposite to the insertion direction) through the retaining device in a radially deformed (particularly radially inwardly pressed / compressed) state and, after axial passage, can be axially (particularly in the insertion direction) suspended on the retaining device in a radially relaxed (particularly radially outwardly unfolded) state.

[0018] According to an improved embodiment of the preferred method, the clamping arms and the fastening arms can preferably be arranged alternately and regularly in the circumferential direction of the expansion sleeve. In particular, the clamping arms and the fastening arms can be arranged uniformly distributed along the circumferential direction of the expansion sleeve. This has the advantage that the expansion sleeve can be stably fastened to the retaining device, for example, centered and fastened in the hole of the retaining device, and the tool to be inserted can be stably held in the expansion sleeve, for example, centered in the receiving space formed by the clamping arms.

[0019] According to an advantageous improvement of the preferred embodiment, the clamping arm, collecting bottom, and fastening arm can be integrally constructed from a flexible metal, preferably spring steel, such as material 1.4310. Due to the metal construction, the expansion sleeve can be cleaned and disinfected particularly effectively.

[0020] According to a preferred embodiment, the expansion sleeve can be constructed as a preferably laser-cut bent shape. Thus, the expansion sleeve as a single unit can be manufactured, particularly simply and cost-effectively, preferably from a metal material. The one-piece construction eliminates the need for additional assembly steps required for multiple individual components.

[0021] More precisely, the tool set is used for inserting and supporting surgical instruments. The tool set includes a receiving expansion sleeve and a retaining device having a perforated plate with preferably circular holes spaced apart by a web for inserting the instrument. The receiving expansion sleeve is inserted into, or can be inserted into, one of the holes such that a fastening section passes through the hole and circumferentially grips the material surrounding the hole of the retaining device opposite to the insertion direction of the instrument. Preferably, the fastening section acts axially and radially from the rear, i.e., circumferentially gripping the web defining the hole for form-fitting fastening of the receiving expansion sleeve to the retaining device. In other words, the receiving expansion sleeve is suspended or can be suspended at the retaining device, such that the receiving expansion sleeve is embedded in the retaining device in the insertion direction (i.e., the axial direction). Thus, not only the axial position but also the radial position of the receiving expansion sleeve is form-fittingly fixed to the retaining device.

[0022] According to a preferred embodiment, the hole into which the expansion sleeve is inserted or can be inserted may have radially inwardly projecting, separable webs formed by the material of the retaining device, the separable webs forming anti-torsional elements for shape-fitting the fastening sections. This eliminates unintentional torsion of the expansion sleeve relative to the retaining device. Preferably, the hole has two separable webs for each fastening section, each separable web forming a stop in the circumferential direction of the expansion sleeve. This means that each fastening section is arranged between two separable webs in the circumferential direction of the expansion sleeve. This stabilizes the fastening of the expansion sleeve on the retaining device and therefore also stabilizes the position of the tool to be inserted.

[0023] According to an improved embodiment of the preferred method, the separating web can be configured such that, in particular, every two separating webs are interconnected, such that the separating webs, together with the outer diameter of the bore, form a plurality of generally triangular or fan-shaped fastening section perforations. The fastening sections (axially, preferably opposite to the insertion direction) can be guided through the fastening section perforations accordingly, and / or form star-shaped clamping arm perforations. These clamping arm perforations preferably have an offset gap extending radially outward from the center of the bore in a star shape, the width of which is greater than the width of the clamping arm, so that the clamping arm can be elastically displaced radially within the clamping arm perforation, preferably guided by the separating web. This has the advantage of stable positioning of the tool to be inserted and avoids, for example, plastic deformation of the clamping arm transverse to the radial direction. Furthermore, the separating web can form an inner diameter that defines the shank diameter of the tool to be inserted, so that tilting of the tool within the receiving expansion sleeve can be prevented or limited.

[0024] According to a preferred embodiment, the holes in the orifice plate can have different diameters, which defines the shank diameter of the tool to be inserted. This prevents or limits the tool from tilting within the receiving expansion sleeve.

[0025] In other words, this disclosure relates to a plug sleeve for a single-plate assembly, wherein a metal clip, which resiliently supports an inserted tool, is suspended by a plurality of (e.g., four) arms from a first perforated plate having a first hole for inserting the tool and is embedded in the first perforated plate (in the insertion direction of the tool). Furthermore, the metal clip may be fastened to the first perforated plate of the retaining device by spot welding or adhesive bonding and / or to a second perforated plate spaced apart from the first perforated plate. The shape of the first hole can stabilize the position of the tool and / or define the tool shank diameter by varying inner diameters. The shape of the second hole or the spacing of the second perforated plates can define the insertion depth of the tool. Attached Figure Description

[0026] Figures 1 to 23Various views and modifications of a receiving expansion sleeve capable of being fastened according to one aspect of this disclosure, and a tool assembly having the receiving expansion sleeve, are shown.

[0027] Figures 24 to 26 Various views and modifications of a conceived expansion sleeve capable of being suspended according to another aspect of this disclosure, and a tool assembly having the conceived expansion sleeve are shown.

[0028] Figures 27 to 38 Various views and modifications of a receiving expansion sleeve that can be securely fastened according to another aspect of this disclosure, and a tool assembly having the receiving expansion sleeve are shown. Detailed Implementation

[0029] The embodiments of this disclosure are described below based on the accompanying figures.

[0030] Figures 1 to 23 Various modifications of the first embodiment of this disclosure are shown. Figures 1 to 9 A first modification of the first embodiment is shown. Figures 10 to 12 A second modification of the first embodiment is shown. Figures 13 to 15 A third modification of the first embodiment is shown. Figures 16 to 21 A fourth modification of the first embodiment is shown. Figure 22 and Figure 23 A fifth modification of the first embodiment is shown.

[0031] Figures 1 to 5 The tool assembly 100 is shown to contain an expansion sleeve 2, which is inserted into or into a retaining device 50 of the tool assembly 100. Figures 6 to 9 The illustration shows the receiving expansion sleeve 2, which is not inserted into or mounted in the retaining device 50 of the tool set 100.

[0032] The receiving expansion sleeve 2 has a number of circumferentially spaced clamping arms 4 and a preferably flat collecting bottom 6, from which the clamping arms 4 extend axially, i.e., perpendicularly to the collecting bottom 6. Alternatively, although not shown, the collecting bottom 6 may also be arched or have embossing, protrusions, etc. In the illustrated embodiment, the receiving expansion sleeve 2 has three clamping arms 4. Alternatively, the receiving expansion sleeve 2 may also have more than three, for example four, five, or six clamping arms 4. The clamping arms 4 are elastically deformable and form insertion ports 8 for inserting (not shown) a tool on the open end side of the receiving expansion sleeve 2. The clamping arms 4 may be evenly distributed around the circumference of the receiving expansion sleeve 2. Preferably, the clamping arms 4 are flexible and made of metal, such as spring steel, like material 1.4310. The clamping arms 4 preferably form a funnel in their (end-side) free end section, which narrows in the insertion direction of the tool to be received.

[0033] The clamping arm 4 has radially inwardly projecting engagement sections 10 for force-contacting and / or form-fitting contact with the tool to retain it. By inserting the tool (and contacting the engagement sections 10), the clamping arm 4 is spring-loaded outwardly in the radial direction of the receiving expansion sleeve 2. The inserted tool is held / clamped between the clamping arms 4 by the resulting elastic clamping of the clamping arms 4. This means that the outer diameter of the receiving cavity formed radially inside the receiving expansion sleeve 2 for receiving the tool is defined radially outward by the engagement sections 10 or the elastic deformability of the clamping arms 4. In this case, these engagement sections 10 are preferably configured such that the contact area between the clamping arms 4 and the received tool is as small as possible (linear and / or point-like). Because the surface of the tool forms contact areas with the receiving expansion sleeve 2 only at the points / lines defined by the engagement sections 10, the tool can be flushed over a large area with cleaning fluid.

[0034] The receiving expansion sleeve 2 has a collecting bottom 6, which is constructed at the end section of the receiving expansion sleeve 2 opposite to the insertion port 8. The collecting bottom 6 extends substantially plate-like and perpendicular to the axial direction of the receiving expansion sleeve 2. Alternatively, the collecting bottom may also be constructed with an embossing. In the illustrated embodiment, the collecting bottom 6 has a circular shape. Alternatively, the collecting bottom 6 may be constructed, for example, annular, elliptical, or substantially triangular. The collecting bottom 6 may also have one or more holes or a central substantially frustoconical recess into which the end of the tool can be automatically centered and received. Here, the frustoconical surface of the recess may also be slitted or interrupted, and the "tip" of the frustocon may be constructed to be open or closed. The clamping arm 4 extends axially toward the open end side of the receiving expansion sleeve 2 from the radially outer edge of the collecting bottom 6. Preferably, the collecting bottom 6 is made of metal, such as spring steel, as in material 1.4310. For example, the clamping arm 4 can be mounted to the collection bottom 6 via an acute-angle connector / acute-angle connection area / bend, such that the tilt angle on the corner connector between the clamping arm 4 and the collection bottom 6 increases in opposition to the elasticity of the clamping arm 4 by inserting the tool. In particular, the collection bottom 6 can be integrated / materially integrally connected to the clamping arm 4.

[0035] The expansion sleeve 2 can be inserted into the retaining device 50 of the tool assembly 100. In particular, the expansion sleeve 2 can be directly fastened to the retaining device 50. The retaining device 50 has a first perforated plate (perforation array / sleeve plate / sieve structure) 52 and a second perforated plate (grid plate / perforation array / bottom plate / sieve structure) 54. The two perforated plates 52, 54 are arranged parallel to each other and spaced apart, for example, via an outer wall (frame) 56 (see...). Figure 17 or Figure 27 and Figure 28 (or the webs are connected to each other.)

[0036] The first perforated plate 52 has a number of first holes (openings / perforations) 58. In the illustrated embodiment, the first holes 58 are substantially circular and may have different diameters to accommodate different tool shank diameters. Alternatively, the first holes 58 may have a substantially rectangular, square, or star-shaped shape, although not shown. The first holes 58 are separated from each other by the material of the first perforated plate 52, for example, by the first web 60. For example, as Figure 1 As shown, the first holes 58 can be arranged in a straight line. That is, the centers of the first holes 58 in adjacent rows and / or the centers of the first holes 58 in adjacent rows have the same distance, i.e., they have the same hole pitch. Figure 1 In the process, the expansion sleeve 2 is inserted into one of the holes in the first hole 58 along the insertion direction of the tool, so that the expansion sleeve is embedded in the first hole plate 52 along the insertion direction of the tool, that is, along the direction toward the second hole plate 54.

[0037] The second perforated plate 54 has a certain number of second holes (reservations / perforations) 62. The second holes 62 are basically square (see...). Figure 2 ) or basically circular ground structure (see Figure 10 , Figure 13 and Figure 16 The second holes 62 are separated from each other by the material of the second hole plate 54, for example by the second web plate 64. Preferably, in the case of a square, the second holes 62 can be arranged in a straight line, for example. That is, the centers of the holes of adjacent rows of second holes 62 and / or the centers of the holes of adjacent rows of second holes 62 have the same distance, i.e., the same hole pitch. That is, the second web plates 64 are arranged in a straight line and parallel or perpendicular to each other. The second web plates 64 intersect at their intersection point 66.

[0038] The first hole 58 and the second hole 62 can be arranged aligned with each other in the axial direction. Alternatively, the second hole 62 can also be arranged not aligned with the first hole 58 in the axial direction, wherein, preferably in the case of the non-aligned arrangement, the intersection 66 is arranged aligned with the first hole 58 in the axial direction.

[0039] In the advantageous improvement scheme (see...) Figure 3 and Figure 4At least one of the first holes 58 may have a radially inwardly projecting split web 68 formed of the material of the first hole plate 52. The split web 68 serves as an anti-torsional element for the shape-fitting accommodating expansion sleeve 2. Preferably, the at least one hole in the first hole 58 (correspondingly fastening section 14 described in detail later) has at least two radially inwardly projecting split webs 68, which are respectively formed as stops in the circumferential direction of the accommodating expansion sleeve 2. This means that each fastening section in the fastening section 14 is arranged between two split webs 68 in the circumferential direction of the accommodating expansion sleeve 2. Through the split webs 68, at least one hole in the first hole 58 is subdivided into a plurality of hole sections that are separated from each other. Preferably, the separating webs 68 can be constructed, in particular (approximately every two separating webs 68), such that the separating webs, together with the outer diameter of the bore, form a plurality of generally triangular or fan-shaped fastening section perforations 70, through which the fastening sections 14 (axially, preferably opposite to the insertion direction) can be guided accordingly. Additionally or alternatively, the separating webs 68 can be constructed, in particular (e.g., every two separating webs 68), such that the separating webs, together with the outer diameter of the bore, form star-shaped clamping arm perforations 72. The clamping arm perforations 72 preferably have an offset gap extending radially outward in a star shape from the center of the bore, the width of which is greater than the width of the clamping arm 4. Thus, the clamping arm 4 can be elastically displaced radially within the clamping arm perforations 72, preferably guided by the separating webs 68. The clamping arm perforations 72 preferably have at least as many offset gaps as the clamping arms 4 of the receiving expansion sleeve 2.

[0040] In the advantageous improvement scheme (see...) Figure 10 and Figure 11 or Figure 13 and Figure 14 The second hole 62 may have radially inwardly projecting separating webs 74 formed of the material of the second hole plate 54. Preferably, at least one of the second holes 62 has a radially inwardly projecting separating web 74, which divides the divided second hole 62 into a plurality of hole segments 76. The separating webs 74 may preferably intersect at the center point of the divided second holes 62. The hole segments 76 preferably have the same shape and may be constructed, for example, substantially triangular or fan-shaped. That is, the separating webs 74 can be constructed, especially interconnected, such that the separating webs intersect at the center of the hole and extend radially outward in a star shape from the center of the hole, thereby forming a plurality of substantially triangular or fan-shaped hole segments 76, especially together with the outer diameter of the hole.

[0041] The expansion sleeve 2 has multiple, for example, on the fastening arm 12 (see...) Figures 1 to 15The device includes fastening sections 14 for securing the expansion sleeve 2 to the holding device 50 of the tool set in a force-transmitting and form-fitting manner. In the illustrated embodiment, the expansion sleeve 2 has three circumferentially spaced fastening arms 12. Alternatively, the expansion sleeve 2 may have more than three fastening arms 12. The fastening arms 12 may be evenly distributed around the circumference of the expansion sleeve 2. Preferably, the number of fastening arms 12 corresponds to the number of clamping arms 4. In particular, these fastening arms 12 may be arranged alternately with these clamping arms 4 in the circumferential direction of the expansion sleeve 2. Preferably, these fastening arms 12 are made of metal, such as spring steel, like material 1.4310. For example, these fastening arms 12 may be fixedly mounted to the collection bottom 6, especially via corner connectors / corner connection areas / bends. In particular, these fastening arms 12 may be integrated / material-integratedly connected to the collection bottom 6 and / or the clamping arms 4.

[0042] The fastening section 14 is particularly used for direct form-fit and force-fit fastening to the holding device 50 of the tool assembly 100, especially to the first orifice plate 52 and / or the second orifice plate 54. The fastening section 14 is adapted and configured to directly engage with the first orifice plate 52 or the second orifice plate 54 to fasten to the orifice plate 52 and axially encircle these orifice plates 52, 54 in a form-fit manner opposite to the insertion direction of the tool to be inserted, such that these orifice plates act on the orifice plate material from behind in a form-fit manner in the orifice plate thickness direction opposite to the insertion direction of the tool to be inserted.

[0043] The collecting bottom 6, which accommodates the expansion sleeve 2, is formed by a flat plate. Alternatively, the collecting bottom 6 may also be arched, for example, constructed in a basically frustoconical shape, or have embossing, protrusions, etc., although not shown. The lower side 16 of the collecting bottom 6 is the axial side of the collecting bottom 6 facing away from the clamping arms 4, that is, the axial outer surface of the collecting bottom 6 accommodating the expansion sleeve 2. The upper side 18 of the collecting bottom 6 is the axial side of the collecting bottom 6 facing the clamping arms 4, that is, the axial inner surface of the collecting bottom 6 accommodating the expansion sleeve 2 (arranged between the clamping arms 4). The upper side 18 of the collecting bottom 6 forms an axial stop surface for the tool to be inserted.

[0044] exist Figures 1 to 9 In the first modified embodiment shown, the fastening arm 12 extends axially from the collection bottom 6 and has a fastening section 14 constructed on its free, radially outwardly curved end section, the fastening section being, for example, in the form of a radially outwardly oriented locking lug. Here, the fastening arm 12 extends from the collection bottom 6 in the same direction as the clamping arm 4. Figures 1 to 9 The fastening arm 12 shown extends axially at approximately the same distance as the clamping arm 4. In particular, Figures 1 to 9The axial extension of the fastening arm 12 shown corresponds substantially to the distance between the first orifice plate 52 and the second orifice plate 54. The radially outwardly curved or protruding end sections of the fastening section 14 are adapted and configured to pass through one of the holes in the first hole 58, such that they act on the orifice plate material of the first orifice plate 52 from the rear in a clamping manner along the thickness direction of the orifice plate. In other words, the fastening section 14 clamps the first orifice plate 52 from below.

[0045] exist Figures 10 to 12 In the second modified embodiment shown, the fastening arm 12 extends axially from the collection bottom 6 and forms a fastening section 14, for example, in the form of a fastening claw, at its free, radially inwardly curved end section. Here, the fastening arm 12 extends from the collection bottom 6 in the opposite direction to the clamping arm 4. Figures 10 to 12 The fastening arm 12 shown is constructed to be (significantly) shorter than the clamping arm 4 in the axial direction. In particular, Figures 10 to 12 The axial extension of the fastening arm 12 shown corresponds substantially to the thickness of the second orifice plate 54. The radially inwardly curved or protruding end sections of the fastening section 14 are adapted and configured to pass through one of the holes (or its hole section 74) in the second hole 62, such that they act on the orifice plate material of the second orifice plate 54 from the rear in a clamping manner along the thickness direction of the orifice plate. The collecting bottom 6 is axially positioned on the orifice plate material of the second orifice plate 54 with its lower side 16. In other words, the fastening section 14 clamps the second orifice plate 54 from above.

[0046] exist Figures 13 to 15 In the third modified embodiment shown, the fastening arm 12 extends axially from the collection bottom 6 and forms a fastening section 14, for example, in the form of a fastening claw, at its free, radially inwardly curved end section. Here, the fastening arm 12 extends from the collection bottom 6 in the same direction as the clamping arm 4. Figures 13 to 15 The fastening arm 12 shown is constructed to be (significantly) shorter than the clamping arm 4 in the axial direction. In particular, Figures 13 to 15 The axial extension of the fastening arm 12 shown corresponds substantially to the thickness of the second orifice plate 54. The radially inwardly curved or protruding end sections of the fastening section 14 are adapted and configured to pass through one of the holes (or its hole section 74) in the second hole 62, such that they act on the orifice plate material of the second orifice plate 54 from the rear in a clamping manner along the thickness direction of the orifice plate. The collecting bottom 6 rests axially against the orifice plate material of the second orifice plate 54 with its upper side 16. In other words, the fastening section 14 clamps the second orifice plate 54 from below.

[0047] exist Figures 16 to 21In the fourth modified embodiment shown, the clamping arm 4 has an interlocking section 10 on the first axial section and a fastening section 14, for example in the form of a curved section, on the second axial section directly connected thereto in the axial direction. The second axial section is radially external relative to the first axial section. The second axial section is constructed between the collection bottom and the first axial section of the clamping arm 4. The second axial section is a radially inwardly curved, generally U-shaped section of the clamping arm 4 and is adapted and configured to pass through one of the holes 62 of the second orifice plate 54, such that the second axial section acts from the rear orifice plate material in the thickness direction of the orifice plate from the radial interior. The U-shaped section may preferably have a radially outwardly oriented opening. In the installed state, the collection bottom 6 accommodating the expansion sleeve 2 is preferably located below the second orifice plate 54 (i.e., outside the intermediate space between the first orifice plate 52 and the second orifice plate 54).

[0048] exist Figure 22 and Figure 23 In the fifth modified embodiment shown, the clamping arm 4 has an engagement section 10 on a first axial section and a fastening section 14 on a second axial section directly connected thereto in the axial direction. The second axial section is radially external relative to the first axial section. The second axial section is constructed at the free end section of the clamping arm 4. The second axial section is a radially inwardly curved, generally U-shaped section of the clamping arm 4 and is adapted and configured to pass through one of the first holes 58 of the first orifice plate 52, such that the second axial section acts from behind or circumferentially along the thickness direction of the orifice plate from the radial interior. The U-shaped section may preferably have a radially outwardly oriented opening. Figures 22 to 23 The fifth modification of the expansion sleeve 2 shown can be fastened to the retaining device 50, which is constructed as a single plate / single hole plate.

[0049] Figures 24 to 26 This illustrates a second embodiment of the present disclosure. The second embodiment features a receiving expansion sleeve 2 suspended in the holding device 50. Figure 24 The image is shown in a three-dimensional view from above. Figure 25 The image is shown in a three-dimensional view from below and in Figure 26 The image is shown in a top view.

[0050] The receiving expansion sleeve 2 has a plurality of clamping arms 4, four of which are circumferentially spaced apart in the illustrated embodiment. Alternatively, the receiving expansion sleeve 2 may also have three or more clamping arms 4. The clamping arms 4 may be evenly distributed around the circumference of the receiving expansion sleeve 2. The clamping arms 4 are elastically deformable and have insertion ports 8 for inserting (not shown) a tool on the open end side of the receiving expansion sleeve 2. Preferably, the clamping arms 4 are flexible and made of metal, such as spring steel, like material 1.4310. The clamping arms 4 preferably form a funnel in their free end section (on the end side), which narrows in the insertion direction of the tool to be received.

[0051] The clamping arms 4 have radially inwardly projecting engagement sections 10 for force-contacting and / or form-fitting contact with the tool to retain it. By inserting the tool (and contacting the engagement sections 10), the clamping arms 4 are spring-loaded outwardly in the radial direction. Through this elastic clamping of the clamping arms 4, the inserted tool is held / clamped between the clamping arms 4. This means that the outer diameter of the receiving cavity formed radially inside the receiving expansion sleeve 2 for accommodating the tool is defined radially outward by the engagement sections 10 or the elastic deformability of the clamping arms 4. In this case, these engagement sections 10 are preferably configured such that the contact surface between the clamping arms 4 and the accommodated tool is as small as possible (linear and / or point-like). Because the surface of the tool forms contact areas with the receiving expansion sleeve 2 only at the points / lines defined by the engagement sections 10, the tool can be flushed over a large area with cleaning fluid.

[0052] The receiving expansion sleeve 2 has a collecting bottom 6, which is constructed at the end section of the receiving expansion sleeve 2 opposite to the insertion port 8. The collecting bottom 6 can serve as an axial stop and prevent excessive insertion of the tool. The collecting bottom 6 extends substantially plate-like and perpendicular to the axial direction of the receiving expansion sleeve 2. In the illustrated embodiment, the collecting bottom 6 has a circular shape. Alternatively, the collecting bottom 6 can be constructed, for example, annular, elliptical, or substantially triangular. The collecting bottom 6 can be constructed flat or arched, for example, substantially frustoconical. A clamping arm 4 extends axially toward the insertion port 8 from the collecting bottom 6. The clamping arm 4 extends radially from the outer edge of the collecting bottom 6. Preferably, the collecting bottom 6 is made of metal, for example, spring steel, such as material 1.4310. For example, the clamping arm 4 can be mounted to the collecting bottom 6 via an acute angle connector / acute angle connection area / bend, such that the angle of inclination at the angle connector between the clamping arm 4 and the collecting bottom 6 increases in opposition to the elasticity of the clamping arm 4 upon insertion of the tool. In particular, the bottom 6 of the collection unit can be integrated / materially connected to the clamping arm 4.

[0053] The expansion sleeve 2 has a plurality of fastening arms 12 for securing the expansion sleeve 2 to the holding device 50 of the tool set. In the illustrated embodiment, the expansion sleeve 2 has four circumferentially spaced fastening arms 12. Alternatively, the expansion sleeve 2 may also have, for example, three or more fastening arms 12. The fastening arms 12 may be evenly distributed around the circumference of the expansion sleeve 2. Preferably, the number of fastening arms 12 corresponds to the number of clamping arms 4. In particular, these fastening arms 12 may be arranged alternately with these clamping arms 4 in the circumferential direction. Preferably, these fastening arms 12 are made of metal, such as spring steel, as in material 1.4310. For example, these fastening arms 12 may be fixedly mounted to the collection bottom 6, especially via corner connectors / corner connection areas / bends. In particular, these fastening arms 12 may be integrated / material-integratedly connected to the collection bottom 6 and / or the clamping arms 4. These fastening arms 12 extend axially from the collection bottom 6 toward the insertion port 8. The fastening arms 12 extend radially from the outer edge of the collection bottom 6. Preferably, the receiving expansion sleeve 2 is constructed as a bent metal form.

[0054] These fastening arms 12 each have hook-shaped fastening sections 14 on their end sections arranged on the open end sides of the receiving expansion sleeve 2 for suspending fastening to the retaining device 50. The fastening sections 14 are constructed in such a curved or bent manner that the fastening sections (along the insertion direction of the tool) can be suspended at the retaining device 50. Preferably, the fastening sections 14 can be constructed and arranged such that the fastening sections act on the retaining device 50 radially and axially from behind. In other words, the fastening sections 14 encircle the retaining device 50 axially and radially, particularly for securing the radial and axial positions of the receiving expansion sleeve 2 on the retaining device 50.

[0055] In particular, the fastening section 14 can form a U-shaped profile. In the illustrated embodiment, the base section forming the bottom of the U-shaped profile extends substantially radially (i.e., perpendicular to the axial direction). Therefore, the base section rests planarly against the retaining device 50. The legs of the U-shaped profile extend substantially in the same axial direction from the ends of the base section. The radially inner leg of the two legs can extend longer in the axial direction than the radially outer leg of the two legs, preferably extending to the collection bottom 6. That is, the profile of the fastening section 14 has an insertion port (hanging port), which is preferably radially outward and / or preferably axially oriented towards the collection bottom 6 (i.e., opposite to the insertion direction of the tool). Through the radially outwardly oriented insertion port of the U-shaped profile, the fastening section 14 can be mounted radially inward onto the retaining device 50. Through the axially oriented insertion port of the U-shaped profile opposite to the insertion direction of the tool, the fastening section 14 can be mounted at the retaining device 50 in the insertion direction of the tool.

[0056] The collecting bottom 6, which accommodates the expansion sleeve 2, is formed, for example, by a flat plate. Alternatively, the collecting bottom 6 may also be arched, for example, substantially frustoconical, or have embossing, protrusions, etc., although not shown. The lower side 16 of the collecting bottom 6 is the axial side of the collecting bottom 6 facing away from the clamping arms 4, that is, the axial outer surface accommodating the expansion sleeve 2. The upper side 18 of the collecting bottom 6 is the axial side of the collecting bottom 6 facing the clamping arms 4, that is, the axial inner surface accommodating the expansion sleeve 2 (arranged between the clamping arms 4). The upper side 18 of the collecting bottom 6 forms an axial stop surface for the tool to be inserted.

[0057] The holding device 50 of the second embodiment has a first perforated plate 52. The first perforated plate 52 has a number of first holes (openings / perforations) 58, which, in the illustrated embodiment, are configured to be circular and have different diameters to accommodate different tool handle diameters. Alternatively, the first holes 58 may have a generally rectangular, square, or star-shaped shape, although not shown. The first holes 58 are separated from each other by a first web 60. For example, as... Figure 24 As shown, the first holes 58 can be arranged in rows staggered by 60°. That is, the centers of the holes in adjacent rows are staggered and centered. The holding device 50 can have a second perforated plate 54, which is arranged parallel to the first perforated plate 52 at intervals, and, for example, via... Figures 24 to 26 The frame, not shown, is connected to the first perforated plate 52. The second perforated plate 54 has a number of second holes (openings / perforations) 62, which may be square in shape. For example, as... Figure 25 As shown, the holes 62 can be arranged in a straight line. The holes 62 can be separated from each other by straight webs 64. The second hole plate 54 can be used as an anti-torsional member to accommodate the expansion sleeve 2. Figures 24 to 26 The second embodiment of the expansion sleeve 2 shown can also be fastened to the retaining device 50, which is configured as a single plate / single-hole plate / having only a first hole plate 52.

[0058] In the second embodiment, the expansion sleeve 2 is fastened to the first perforated plate 52 of the retaining device 50. Specifically, the expansion sleeve 2 is inserted into one of the holes in the first holes 58. A hook-shaped fastening section 14 acts axially and radially from the rear on the web 60, so that the web (especially the radially outer legs of the U-shaped profile) fits into the adjacent first hole 58. In other words, the fastening section 14 bends radially outward through the first hole 58 (in which the expansion sleeve 2 is inserted), so that the fastening section extends outward parallel to / along the perforated plate material and acts axially from the rear on the web 60 defining the first hole 58, and bends axially in the direction toward the collecting bottom 6, so that the fastening section fits into the adjacent first hole 58 and acts radially from the rear on the web 60 defining the first hole 58. Therefore, the fastening section 14 grips the perforated plate material in the axial direction, especially opposite to the insertion direction of the tool. That is, the fastening section 14 hangs on the web 60 of the first perforated plate 52.

[0059] In an advantageous improvement, at least one of the first holes 58 may have a radially inwardly projecting separate web 68 formed of the material of the first hole plate 52. The separate web 68 forms an anti-torsional element for receiving the expansion sleeve 2, particularly for the form fit of the fastening section 14. Preferably, the at least one hole in the first hole 58 (the corresponding fastening section 14) has at least two radially inwardly projecting separate webs 68, which are correspondingly formed as stops in the circumferential direction of receiving the expansion sleeve 2. This means that each fastening section 14 is arranged between two separate webs 68 in the circumferential direction of receiving the expansion sleeve 2.

[0060] By separating the web 68, at least one of the first holes 58 is subdivided into a plurality of separate hole segments. Preferably, the separating web 68 can be configured, in particular (approximately every two separating webs 68), to be interconnected such that the separating webs, in particular with the outer diameter of the hole, form a plurality of generally triangular or fan-shaped fastening segment perforations 70. Each fastening segment perforation 70 is coordinated with the basic segment of the fastening segment 14, in particular the U-shaped profile, such that the fastening segment 14 can pass axially (preferably opposite to the insertion direction) through the fastening segment perforation 70. Additionally or alternatively, the separating webs 68 can be configured, in particular (e.g., every two separating webs 68), to be interconnected such that the separating webs, in particular with the outer diameter of the hole, form star-shaped clamping arm perforations 72. The clamping arm perforations 72 preferably have an offset gap extending radially outward in a star shape from the center of the hole, the width of the offset gap being greater than the width of the clamping arm 4. Thus, the clamping arm 4 can be elastically (restrictedly) displaced radially within the clamping arm through-hole 72, preferably guided by the separating web 68. The clamping arm through-hole 72 preferably has at least as much offset clearance as the clamping arm 4 of the receiving expansion sleeve 2. Figures 24 to 26 In the embodiment shown with four clamping arms 4, the clamping arm perforations 72 have a plus-shaped / cross-shaped cross-section. The inner diameter formed by the separating web 68 can define the shank diameter of the tool to be inserted.

[0061] Figures 27 to 38 The third embodiment is shown. The holding device 50 of the third embodiment is in... Figure 27 It is shown three-dimensionally from below and in Figure 28 The first perforated plate (perforation array / sleeve plate / sieve structure) 52 and the second perforated plate (grid plate / perforation array / bottom plate / sieve structure) 54 are arranged parallel to each other and are connected to each other through the outer wall (frame) 56.

[0062] The first perforated plate 52 has a number of first holes (openings / perforations) 58, which, in the illustrated embodiment, are configured to be circular and have different diameters to accommodate different tool handle diameters. Alternatively, the first holes 58 may have a generally rectangular, square, or star-shaped shape, although not shown. Alternatively, the first holes 58 may be configured to have the same diameter. An expansion sleeve 2 can be inserted / can be placed into or has been inserted / placed into each first hole 58. The first holes 58 are separated from each other by a first web 60.

[0063] The second perforated plate 54 has a number of second holes (openings / perforations) 62, which are constructed in a generally quadrilateral, preferably generally rectangular or square shape and are separated from each other by a second web 64. In the illustrated embodiment, each second hole 62 has the same shape. Alternatively, the second holes 62 may have different sizes.

[0064] The second web 62 extends linearly and parallel to the outer edge of the second hole plate 54. The second web 62 forms a grid structure and intersects substantially perpendicularly at its intersection 66. The second holes 62 are arranged in rows, with directly adjacent rows of second holes 62 staggered from each other, preferably centrally arranged. Thus, the second holes 62 are arranged in rows staggered at 60°. That is, the second web 64 forms a T-shaped intersection at its intersection 66, or each intersection 66 forms the edges of three adjacent second holes 62, particularly two corner points and one side edge. At the intersection 66, the second web 64 widens outwardly at the corner points of the second holes 62, i.e., the second web convexly arches towards the center of the hole. As a result, the second hole 62 has a substantially square shape, with its corners concavely arching inward (its corner points arching inward in a roughly quarter-circle shape). In other words, the second web 64 is widened such that at its intersection 66, a circular surface with a radius substantially corresponding to the width of the second web 64 can be completely arranged between the second holes 62. In other words, the second web 64 forms a fusion weld, brazing, or adhesive surface at the intersection 66, which is preferably substantially the same size as the surface of the collecting bottom 6.

[0065] The first hole 58 is arranged to be aligned with the intersection point 66 of the second hole plate 54, and in particular, aligned with the center point of the circular surface constructed between the second holes 62. That is, the first hole 58 is arranged to be offset from the second hole 60 (i.e., not aligned). In particular, the first holes 58 of the first hole plate 52 can be arranged in parallel spaced rows and the center of the holes in every two adjacent rows is arranged relative to the web width of the second web plate 64 offset from each other.

[0066] Figures 29 to 32 Various views of the receiving expansion sleeve 2 according to the third embodiment are shown. The receiving expansion sleeve 2 has elastically deformable clamping arms 4. The clamping arms 4 preferably form a funnel in their (end-side) free end sections, which narrows in the insertion direction of the tool to be received. By inserting the tool, the diameter of the cavity radially defined by the clamping arms 4 is radially expanded and a thrust ramp is formed for the tool to be inserted, and the clamping arms 4 are spring-loaded outward in the radial direction. By the resulting elastic clamping of the clamping arms 4, the inserted tool is clamped in the cavity between the clamping arms 4. In this case, these clamping arms 4 are preferably configured such that the contact surface between these clamping arms and the received tool is as small as possible (linear and / or point-like). Because the surface of the tool forms contact areas with the receiving expansion sleeve 2 only at the points / lines defined by the interlocking section 10, the tool can be flushed over a large area with cleaning fluid.

[0067] The receiving expansion sleeve 2 has a collecting bottom 6, which is constructed at the end section of the receiving expansion sleeve 2 opposite to the insertion port 8. The collecting bottom 6 can serve as an axial stop and prevent excessive insertion of the tool. The collecting bottom 6 extends substantially plate-like and perpendicular to the axial direction of the receiving expansion sleeve 2. In the illustrated embodiment, the collecting bottom 6 has a circular shape. Alternatively, the collecting bottom 6 can be constructed, for example, annular, elliptical, or substantially triangular. A clamping arm 4 extends axially toward the open end side from the collecting bottom 6. The clamping arm 4 extends axially from the radially outer edge of the collecting bottom 6. Preferably, the collecting bottom 6 is made of metal, such as spring steel, as in material 1.4310. For example, the clamping arm 4 can be mounted to the collecting bottom 6 via an acute angle connector / acute angle connection area / bend, such that the angle of inclination at the angle connector between the clamping arm 4 and the collecting bottom 6 increases in opposition to the elasticity of the clamping arm 4 upon insertion of the tool. In particular, the bottom 6 of the collection unit can be integrated / materially connected to the clamping arm 4.

[0068] With the expansion sleeve 2 directly and material-fitted to the retaining device 50, the collecting bottom 6 is formed of a flat, edgeless plate, with only clamping arms 4 extending axially (that is, in a direction perpendicular to the plate) from this plate, and the plate has welded, brazed, or bonded sections 20 constructed on one or two flat sides in the middle region. In other words, the expansion sleeve 2 is composed of a flat, edgeless collecting bottom 6, with multiple (three in the illustrated embodiment) clamping arms 4 extending axially from this collecting bottom towards the open end side. Therefore, only the clamping arms 4 extend axially from the radially outer edge of the collecting bottom 6.

[0069] The lower side 16 of the collecting bottom 6 is the axial side of the collecting bottom 6 facing away from the clamping arm 4, that is, the axial outer surface of the receiving expansion sleeve 2. The upper side 18 of the collecting bottom 6 is the axial side of the collecting bottom 6 facing the clamping arm 4, that is, the axial inner surface of the receiving expansion sleeve 2 (arranged between the clamping arms 4). The upper side 18 of the collecting bottom 6 forms an axial stop surface for the tool to be inserted. The lower side 16 and / or the upper side 18 of the collecting bottom 6 have or form a fusion welded section, brazed section or adhesive section 20 of preferably metal, which is adapted and arranged to secure the receiving expansion sleeve 2 to the retaining device 50, especially the second orifice plate 54, by direct material fit, especially (spot) welding. When the lower side 16 has a fusion-welded section, brazed section, or adhesive section 20, the expansion sleeve 2 can be axially placed / positioned onto the retaining device 50 from above (in the insertion direction of the tool to be inserted) and securely fastened therein. When the upper side 18 has a fusion-welded section, brazed section, or adhesive section 20, the expansion sleeve 2 can be axially inserted into the retaining device 50 from below (opposite to the insertion direction of the tool to be inserted) and securely fastened therein. In other words, the lower side 16 and / or the upper side 18 of the collecting bottom 6 are fusion-welded or can be fusion-welded onto the retaining device 50.

[0070] The expansion sleeve 2 can be adapted and configured such that it can be inserted into the second orifice plate 54 of the retaining device 50 in the opposite direction to the insertion direction of the tool to be inserted, such that the clamping arm 4 passes through the second hole 62 and the collecting bottom 6 protrudes axially from the second orifice plate 54, which acts as a spacer retainer. In other words, the second orifice plate 54 can thus maintain a space relative to, for example, a receiving box (not shown), into which the second orifice plate 54 is inserted in the insertion direction of the tool. This means that the lower side of the second orifice plate 54 can maintain a thickness of the collecting bottom 6 that is axially spaced from the receiving box. According to an embodiment, the collecting bottom 6 may have a weldable insert or a weldable coating.

[0071] Figures 33 to 38 Various views of the tool set 100 according to the third embodiment are shown, wherein the expansion sleeve 2 is secured to the retaining device 50. In the third embodiment, as shown... Figure 33 , Figure 36 and Figure 38 In the improved embodiment shown, the upper side 18 of the collecting bottom 6 is fastened, preferably (by spot welding) fused to the retaining device 50, particularly at one of the intersections 66 of the second perforated plate 54. In the third embodiment as shown... Figure 34 In the improved embodiment shown, the lower side 16 of the collecting bottom 6 is fastened, preferably (by spot welding) fused to the retaining device 50, particularly at one of the intersections 66 of the second orifice plate 54.

[0072] exist Figure 34 In the improved arrangement shown, the expansion sleeve 2 (from above, i.e., along the insertion direction of the tool) is placed on the second orifice plate 54. This means that the expansion sleeve 2 can be completely arranged between the two orifice plates 52, 54. The collecting bottom 6 and the circular surface formed by the intersection 66 are oriented in a centroidal manner towards each other. The lower / axial outer surface 16 of the expansion sleeve 2 is mounted on the axial side of the second orifice plate 54 facing the first orifice plate 52, in particular by spot welding.

[0073] exist Figure 33 , Figure 36 and Figure 38 In the illustrated improvement, the receiving expansion sleeve 2 (from below, i.e., opposite to the insertion direction of the tool) is inserted onto or into the second orifice plate 54. The collecting bottom 6 and the circular surface formed by the intersection 66 are oriented centrally relative to each other. The upper / axial inner surface 18 of the receiving expansion sleeve 2 is mounted on the axial side of the second orifice plate 54 opposite to the first orifice plate 52, particularly by spot welding. In other words, each clamping arm 4 axially passes through one hole in the second orifice 62. This means that the receiving expansion sleeve 2 axially protrudes beyond the thickness of the collecting bottom 6 on the axial side of the second orifice plate 54 opposite to the first orifice plate 52. This has the advantage that the collecting bottom 6 can serve as a spacer between the second orifice plate 54 and the (not shown) receiving box.

[0074] By aligning the first hole 58 with the intersection point 66 of the second hole plate, the insertion port 8 formed by the clamping arm 4 is aligned with the first hole 58. Therefore, the tool to be inserted can be axially inserted through the first hole plate 52 (until the collection bottom 6 or the second hole plate 54) in the insertion direction and held radially by the fitting section 10 that accommodates the expansion sleeve 2.

Claims

1. A receiving expansion sleeve (2) for inserting and supporting a tool assembly (100) for receiving surgical instruments. The receiving expansion sleeve has a number of circumferentially spaced, elastically deformable clamping arms (4), which are configured with insertion ports (8) for inserting tools on the open end sides of the receiving expansion sleeve (2) and have radially inwardly projecting engagement sections (10) for force-fitting and / or form-fitting contact with the tool for retaining the tool. The receiving expansion sleeve has a collecting bottom (6) constructed in the end section of the receiving expansion sleeve (2) opposite the insertion port (8), and the clamping arm (4) extends axially from the collecting bottom toward the open end side. The expansion sleeve has a fastening section (14) for form-fitting fastening to the retaining device (50) of the tool set (100). Its features are, The fastening section (14) is adapted and configured to be suspended fastened to the retaining device (50) such that the fastening section passes through the hole (58) of the retaining device (50) and acts axially and radially from behind the material surrounding the hole (58) of the retaining device (50) opposite to the insertion direction of the tool to be inserted, thereby achieving a circumferential grip of the material surrounding the hole (58).

2. Containment expansion sleeve (2) according to claim 1, characterized in that The fastening section (14) is adapted and configured such that the fastening section encircles the web (60) of the retaining device (50), the web separating adjacent holes (58) of the retaining device (50) from each other.

3. Containment expansion sleeve (2) according to claim 1 or 2, characterized in that The fastening section (14) has a basic U-shaped and / or hook-shaped profile.

4. Containment expansion sleeve (2) according to claim 1 or 2, characterized in that A certain number of circumferentially spaced fastening arms (12) extend axially from the bottom of the collection (6) toward the open end side and form fastening sections (14) on the free end sections of the fastening arms for suspension fastening.

5. The containment sleeve of claim 4, wherein, The clamping arm and the fastening arm are arranged alternately in the circumferential direction of the receiving expansion sleeve (2).

6. Containment expansion sleeve (2) according to claim 4, characterized in that The clamping arm, the collecting bottom, and the fastening arm are integrally constructed of a flexible metal structure.

7. Containment expansion sleeve (2) according to claim 1 or 2, characterized in that The expansion sleeve (2) is constructed as a bent part.

8. The expansion sleeve (2) according to claim 1, characterized in that, The holding device (50) is constructed as a perforated plate (52).

9. The expansion sleeve (2) according to claim 3, characterized in that, The insertion port of the profile is oriented radially outward and / or axially toward the bottom of the collection (6).

10. The expansion sleeve (2) according to claim 4, characterized in that, The fastening arm (12) is made of metal.

11. The expansion sleeve (2) according to claim 6, characterized in that, The clamping arm, the collecting bottom, and the fastening arm are constructed of spring steel.

12. The expansion sleeve (2) according to claim 11, characterized in that, The clamping arm, the collecting bottom, and the fastening arm are constructed of material 1.4310.

13. A tool set (100) for inserting and supporting surgical instruments. Having an expansion sleeve (2) according to any one of claims 1 to 12, and A retaining device (50) having a perforated plate (52) having holes (58) for inserting a tool separated from each other by a web (60), characterized in that... The receiving expansion sleeve (2) is inserted into or can be inserted into one of the holes (58) such that the fastening section (14) passes through the hole (58) and acts axially opposite to the insertion direction of the tool to be inserted and radially from behind the material surrounding the hole (58) of the retaining device (50), thereby achieving a circumferential grip of the material surrounding the hole (58).

14. The tool set (100) according to claim 13, characterized in that, The hole has a radially inwardly projecting separating web (68) made of the material of the retaining device (50), into which the receiving expansion sleeve (2) is inserted or can be inserted, and the separating web constitutes a torsion-resistant member for the shape fit of the fastening section.

15. The tool set (100) according to claim 14, characterized in that, The separating web (68) is configured such that it forms a plurality of basic triangular or fan-shaped fastening section perforations (70), through which the corresponding fastening sections (14) can pass and / or form star-shaped clamping arm perforations (72).

16. The tool set (100) according to claim 13, characterized in that, The fastening section is used to form-fit the web (60) defining the hole (58) on the retaining device (50) to secure the receiving expansion sleeve (2).

17. The tool set (100) according to claim 15, characterized in that, The clamping arm perforation has an offset gap that extends radially outward in a star shape from the center of the hole. The width of the offset gap is greater than the width of the clamping arm, so that the clamping arm (4) can be elastically displaced in the radial direction inside the clamping arm perforation (72).

18. The tool set (100) according to claim 17, characterized in that, The clamping arm (4) is elastically displaced in the radial direction within the clamping arm perforation (72) guided by the separating web (68).

19. The tool set (100) according to claim 15, characterized in that, Each pair of separate webs (68) are connected to each other to form a plurality of basic triangular or fan-shaped fastening section perforations (70) together with the outer diameter of the hole (58).

Images