Medical holding clip, medical device for holding a medical tool and method for changing a tool on a medical device

Abstract

The present disclosure relates to a medical retaining clip (1) for detachable mounting on a medical device (2), in particular on a medical handpiece (3) of a medical device (4) with - a mounting area (5) having two clip wings (6, 7) which together form a C or U shape and which, seen in a retaining clip cross-sectional plane (Q), are elastically bendable along a first direction (R1) to widen the C or U shape for clip mounting of the retaining clip (1) on or to the medical device (2) - a locking or clamping area (8) which is designed and configured to clamp and release a hose or tube (9) preferably parallel to the medical device (2). The medical retaining clip (1) is improved in that the locking or clamping area (8) has a clamping wing (10) formed integrally with or attached to the mounting area (5), which forms a receiving gap (11) open on one side between itself and the locking or clamping area (8) and which is elastically bendable along a second direction (R2) in the cross-sectional plane (Q) of the retaining clip, allowing the receiving gap (11) to widen. This second direction is at an angle (α) other than 0° to the first direction (R1). Furthermore, the present disclosure relates to a medical device (4) for receiving a medical tool (17) and a method for changing the tool on a medical device (4).

Description

[0001] The present disclosure relates to a medical holding clip according to the preamble of claim 1, as well as a medical device for receiving a medical tool and a method for changing the tool on a medical device. State of the art

[0002] Medical devices, particularly surgical instruments in the form of handheld devices such as hand drills or hand mills, are known from the prior art. These devices provide a supply of irrigating fluid via a hose or tube attached to the outside of the handheld device, or via a fixed passage inside the handheld device. In particular, a sterile irrigating set (bag / hose combination) is usually connected to the hose or tube to flush sterile irrigating fluid through it. The sterile fluid must exit the sterile hose and is then conveyed through the hose or tube, which is attached to a handpiece of the medical device, to the instrument / site. Due to the small volume or flow rate of the irrigating fluid, the hose or tube typically has a small inner diameter.There are known coiled / bent tubes which can be pushed onto the handpiece of the medical device and which hold on the medical device without any further components.

[0003] Medical retaining clips are also known, by means of which the hose or tube is attached externally to the medical device, in particular its handpiece. Such medical retaining clips are designed for detachable mounting on the medical device, especially on the medical handpiece, and have a mounting area comprising two clip wings that together form a C or U shape. Viewed in a cross-sectional plane of the retaining clip, these wings are elastically bendable along a first direction to widen the C or U shape for clip mounting of the retaining clip onto or in the medical device. Such medical retaining clips further have a locking or clamping area designed and configured to clamp and detach a hose or tube, preferably parallel to the medical device.

[0004] Retaining clips are known which, viewed in a retaining clip cross-sectional plane, have two clamping wings between which a receiving slot, open on one side and oriented radially, is formed, the outer opening of which lies parallel to a line tangential to the clip wings. These two clamping wings are then each elastically bendable in the retaining clip cross-sectional plane along a direction parallel to the first direction.

[0005] The direction in which the clamping wings bend is determined as follows. The situation is considered in which no hose or pipe is held in the clamping area. From this configuration, the clamping wings begin to bend when the hose or pipe is inserted from above through the opening of the receiving slot. Bending begins when the first contact is made between the hose or pipe and the clamping wings. The direction in which the clamping wings bend refers to the direction in which each clamping wing, specifically the projecting end of its neutral axis, bends at the beginning of the bending process, with this direction being parallel to the first direction, as described above. As the bending progresses, the direction of the bend changes along a curve, but this is irrelevant for the definition of the direction.whose angle is irrelevant in the context of this application text.

[0006] However, the known retention clips are quite large to ensure functionality and stability, meaning that the tube or pipe can only be connected to the medical device using the retention clip at a relatively large distance. This restricts the movement of the medical device in potentially very confined surgical areas due to the retention clip and the tube or pipe, and certain operations may then be impossible to perform.

[0007] For attaching hoses or tubes to the medical device, plastic carriers with an additional adhesive element are also known, but these are complex to manufacture and difficult to handle. Furthermore, adhesive residues are difficult to remove after use, if at all.

[0008] Medical retention clips are also known that are injection-molded around the hose or tube during their manufacture, with the hose or tube acting as an insert. However, the manufacturing process for such a design is complex. Furthermore, it is essential to ensure that no processing aids enter the hose or tube.

[0009] There are known perforated medical retention clips where the tube or pipe must be inserted lengthwise into the hole / bore to connect to the respective retention clip. This poses a risk of abrasion particles getting into the tube or pipe and being carried into the patient during subsequent surgery. Brief description of the Revelation

[0010] The purpose of disclosure is therefore to avoid or at least mitigate the disadvantages arising from the prior art.

[0011] This problem is initially solved by a medical holding clip according to claim 1.

[0012] The basic functional concept of the present disclosure consists, in principle, of bringing the retaining clip into assembly engagement with the medical device in a predefined clipping direction and clamping another tube or hose to the retaining clip in a predefined clamping direction that is at an angle other than 0° to the clipping direction. This functional principle can be implemented constructively as follows:

[0013] One aspect of the disclosure is essentially that the locking or clamping area of ​​the retaining clip for the hose or tube has a clamping wing preferably formed integrally with or attached to the mounting area for clipping the retaining clip onto the medical device, which forms a receiving gap open on one side between itself and the locking or clamping area or the mounting area, wherein the clamping wing is elastically bendable along a (second) direction for widening the (tube / hose) receiving gap, viewed in the cross-sectional plane of the retaining clip, which is at an angle other than 0° to a first direction in which clip wings of the mounting area widen when the retaining clip is clipped onto the medical device.In this way, unintentional stripping of a clamped tube / hose is avoided or at least made more difficult, for example when handling the medical device or when clipping the retaining clip onto the medical device, since the clamping direction for the tube or hose is different from the clip direction.

[0014] Additionally, the receiving gap can change its longitudinal direction, for example by forming a hook-shaped longitudinal kink, which further makes it more difficult to unintentionally push the hose / pipe out of the receiving gap.

[0015] The hose or tube is advantageously inserted laterally into the receiving slot in a direction perpendicular to its longitudinal axis. Preferably, the angle between the first and second directions in the cross-sectional plane of the retaining clip has values ​​greater than 0° and less than or equal to 90°. In particular, the angle between the first and second directions in the cross-sectional plane of the retaining clip has values ​​between 75° and 90°, most preferably 90°. A retaining clip designed in this way can be made particularly compact. In particular, an outer side of the clamping area or clamping wing facing away from the mounting area can be formed with minimal distance to an inner section of the clip wings. With such a retaining clip, a particularly small distance between the medical device connected to the retaining clip and the hose or tube connected to the retaining clip can also be achieved.The movement of the medical device in potentially very confined surgical areas is only minimally limited by such a retaining clip and the associated tube or pipe, so that a variety of different operations can be performed.

[0016] Preferably, the clip wings define an inner section which is intended to engage with the medical device in a preferably linear clamping engagement, and the clip wings define an outer section facing away from the inner section which is intended to form the receiving gap together with the clamping wing.

[0017] The clamping wing is preferably essentially L-shaped. In this configuration, a short leg of the L-shaped clamping wing is integrally formed with, attached to, or abuts the mounting area, while a long leg of the L-shaped clamping wing forms the projecting end. This allows the aforementioned change of direction in the receiving gap to be achieved.

[0018] According to an advantageous embodiment of the medical retention clip, the receiving slot extends, at least longitudinally, substantially tangentially to the C- or U-shape of the clip wings of the mounting area. In particular, the second direction, viewed in the cross-sectional plane of the retention clip, is then perpendicular to the first direction. This tangential orientation of the receiving slot further reduces the space required for the retention clip.

[0019] According to a further advantageous embodiment of the medical holding clip, the receiving slot, viewed in the projection direction of the clamping wing, is straight, meandering, curved or with at least one kink-shaped bend.

[0020] A straight design is particularly easy to manufacture and results in a particularly cost-effective production of the retaining clip. A meandering or curved receiving slot, or one with at least one kink, leads to enhanced functionality of the retaining clip, minimizing or at least reducing the risk of the hose or pipe slipping out unintentionally.

[0021] It can be advantageous if the outer section of the clip wings (or the mounting section) and / or a side of the clamping wing facing the outer section, viewed in the overhang direction of the clamping wing, is corrugated or ribbed in order to define at least one, preferably a plurality of, individual detent positions spaced apart in the overhang direction of the clamping wing within the receiving gap.

[0022] This allows for different positions of the hose or tube relative to one end of the medical device, particularly a medical instrument attached to the medical device. By appropriately designing the shafts or ribs, hoses or tubes of different diameters can be clamped, and / or hoses or tubes of the same diameter can be clamped with varying degrees of force.

[0023] Preferably, the receiving slot has a feed section immediately adjacent to the innermost detent position as seen in the projection direction of the clamping wing, through which the hose or tube can be guided to the innermost detent position and which, seen in the cross-sectional plane of the retaining clip, extends along a third direction which is at an angle of 65° to 115°, preferably 80° to 100°, in particular 90°, to a perpendicular to the first direction.

[0024] This innermost locking position is, in particular, the locking position in which the hose or tube is positioned during an operation. Specifically, the third direction is essentially perpendicular to the second direction.

[0025] A further preferred feature is a radial distance between the inner and outer sections of the clip wings towards the detent position that is at most equal to the thickness of the clip wings adjacent to the detent or clamping area. This is made possible, in particular, by positioning and / or forming the short leg of the L-shaped clamping wing, viewed circumferentially from the C- or U-shape of the clip wings, next to and at a specific distance from the detent position. This further increases the compactness of the retaining clip.

[0026] In particular, the receiving gap between its outer opening and the innermost locking position has a pre-locking position in which the hose or pipe can be arranged, and in particular clamped. Preferably, hoses or pipes of the same diameter can be clamped with a greater clamping force in the innermost locking position than in the pre-locking position.

[0027] According to a further advantageous embodiment of the medical retention clip, the pre-locking position is connected to the receiving slot opening via a receiving slot section of maximum curvature, preferably with a kink-shaped bend. This receiving slot section of maximum curvature, preferably with a kink-shaped bend, is preferably formed by means of a protrusion on the clip wing arranged here. In particular, the clip wing, arranged here, especially adjacent to the outer opening of the receiving slot, is designed with a locally increased thickness, precisely in the area of ​​the protrusion.

[0028] Furthermore, the problem is solved by a medical device for receiving a medical tool with a handpiece, by which the medical device can be guided by a physician and with at least one previously described medical holding clip, by means of which a hose or a tube can be detachably connected and / or attached to the medical device, in particular its handpiece.

[0029] A medical device designed in this way can be made particularly compact. Specifically, the integration of the described retaining clip allows for a very small distance between the medical device (connected to the retaining clip) and the tube or pipe (also connected to the retaining clip). The movement of the medical device in potentially very confined surgical areas is only minimally restricted by the retaining clip and the connected tube or pipe, enabling a wide variety of surgical procedures to be performed with this device. Various instruments for performing different surgical tasks can be accommodated within the medical device.

[0030] Furthermore, the problem is solved by a method for changing tools on a previously described medical device, in which the handpiece with the detachably connected medical holding clip is rotated around the longitudinal axis of the handpiece to release or lock the medical tool, while the hose or tube is clamped and remains clamped in the medical holding clip.

[0031] Tool changes can therefore be carried out in just a few steps, especially without having to reattach the hose or tube. The retaining clip is preferably connected to the handpiece in such a way that, when the handpiece is rotated into its twisted position (in which the tool is released), the outer opening of the receiving slot is aligned with the direction of rotation from the detent position. This reliably prevents the hose or tube from slipping out of the receiving slot.

[0032] Preferably, the hose or tube is deformed into a helix when the handpiece is rotated into its twisted position in which the tool is released.

[0033] The hose or tube is connected to the medical device by an additional, so-called pre-holding clip located next to the handpiece. The relative position of the pre-holding clip to the medical device remains unchanged during rotation. Brief description of the characters

[0034] Preferred embodiments are described in more detail below with reference to the accompanying figures. Fig. Figure 1 schematically shows a first embodiment of a medical retaining clip and a first embodiment of a medical device with the retaining clip mounted on the medical device in a three-dimensional view. Fig. Figure 2 schematically shows the first embodiment of the medical retaining clip in a side view towards the retaining clip cross-sectional plane. Fig. Figure 3a schematically shows a second embodiment of the medical retaining clip in a side view towards the retaining clip cross-sectional plane. Fig. Figure 3b schematically shows the second embodiment of the medical retaining clip with a hose or tube arranged in a pre-locking position in a side view towards the retaining clip cross-sectional plane. Fig. Figure 3c schematically shows the second embodiment of the medical retaining clip with a hose or tube arranged in an innermost detent position in a side view towards the retaining clip cross-sectional plane. Fig. Figure 4 schematically shows a third embodiment of the medical retaining clip in a side view towards the retaining clip cross-sectional plane. Fig. Figure 5a schematically shows the first embodiment of the medical retaining clip and a second embodiment of a medical device with the retaining clip mounted on the medical device in a three-dimensional view. Fig. Figure 5b schematically shows the first embodiment of the medical holding clip and a second embodiment of a medical device with the holding clip mounted on the medical device in a three-dimensional view, but with a handpiece of the medical device in a position opposite the one shown in Figure 5b. Fig. 5a shown, twisted position. Fig. Figure 6a schematically shows the second embodiment of the medical retaining clip with a hose or tube arranged in the innermost detent position in a three-dimensional view. Fig. Figure 6b schematically shows the second embodiment of the medical retaining clip with a hose or tube arranged obliquely to the innermost detent position and obliquely to the pre-detent position in a three-dimensional view. Description of preferred embodiments

[0035] Fig. 1 to Fig. Figure 6b shows a medical retaining clip 1 for detachable mounting on a medical device 2, in particular on a medical handpiece 3 of a medical device 4, with a mounting area 5 having two clip wings 6, 7 which together form a C or U shape and which, viewed in a retaining clip cross-sectional plane Q, are elastically bendable along a first direction R1 in order to widen the C or U shape for clip mounting of the retaining clip 1 on or to the medical device 2. The retaining clip 1 further has a locking or clamping area 8 which is designed and configured to clamp and detachably receive a hose or tube 9, preferably parallel to the medical device 2.

[0036] The two clip wings 6, 7 are bendable in the same way. Essentially, the clip wings 6, 7 adjacent to the clamping area 8 have a mirror-symmetrical shape relative to each other. However, it would also be conceivable to use clip wings 6, 7 that are asymmetrical to each other.

[0037] The locking or clamping area 8 has a clamping wing 10 that is integrally formed with or attached to the mounting area 5. The clamping wing 10 forms a receiving gap 11 open on one side between itself and the locking or clamping area 8. The clamping wing 10 is elastically bendable along a second direction R2, which is at an angle α other than 0° to the first direction R1, in order to widen the receiving gap 11 as seen in the cross-sectional plane Q of the retaining clip. Preferably, exactly one clamping wing 10 is provided.

[0038] The second direction R2 is determined as follows. First, the situation is considered in which no hose or tube 9 is received in the locking or clamping area 8. From this configuration, the clamping wing 10 begins to bend when the hose or tube 9 is inserted through an opening 16 of the receiving gap 11. The bending begins when the first contact is made between the hose or tube 9 and the clamping wing 10. The second direction R2 refers to the direction in which the clamping wing 10, in particular the projecting end of the neutral axis of the clamping wing 10, bends at the beginning of the bending process. Depending on the shape of the receiving gap 11, there may be other ways to determine the second direction R2, such as... Fig. 3a and Fig. 4 will be explained.

[0039] The retaining clip 1 preferably has identical cross-sectional shapes perpendicular to the retaining clip cross-sectional plane Q, except for rounded edges. Minor variations of these cross-sectional shapes for arranging the retaining clip 1 on a conical area of ​​the medical device 2, in particular on a handpiece 3 that is at least partially conical, are conceivable. The clamping wing 10 is preferably substantially L-shaped, with a short leg adjacent to the clip wings 6, 7, which transitions into a long leg that forms the projecting end of the clamping wing 10.

[0040] According to the first and second embodiments of the medical retaining clip 1, the clip wings 6, 7 define an inner section 12, which is intended to engage with the medical device 2 in a preferably linear clamping engagement, and the clip wings 6, 7 further define an outer section 13, facing away from the inner section 12, which is intended to form the receiving gap 11 together with the clamping wing 10.

[0041] According to the third embodiment of the medical retaining clip 1 made of Fig. 4 An opening 16 of the receiving slot 11 is formed in the inner section 12 of the clip wings 6, 7. The receiving slot 11 then extends from this opening 16 into the detent or clamping area 8. The clamping wing 10 is formed according to Fig. 4 as a continuation of one of the clip wings 6, 7, namely the first clip wing 6, in the circumferential direction, so that a radius of the inner section 12 of the clip wing 6 can be reduced by bending the clamping wing 10.

[0042] The receiving slot 11 extends, in particular according to the first embodiment of the retaining clip 1, e.g., from Fig. 2, essentially tangential to the C- or U-shape of the clip wings 6, 7. Here, the receiving slot 11, viewed in the cross-sectional plane Q of the retaining clip, extends along a third direction R3 which is essentially parallel to the first direction. However, in the other embodiments of the retaining clip 1 as well, a specific section of the receiving slot 11 extends tangentially to the C- or U-shape of the clip wings 6, 7.

[0043] The receiving slot 11, viewed in the overhang direction of the clamping wing 10, is straight, meandering, curved or formed with at least one kink-shaped bend 14. Fig. Figure 2 shows the straight-line version. Fig. 3a, b and c, as well as Fig. 4, Fig. 6a and Fig. Figure 6b shows a meandering, curved, or at least one kink-shaped bend 14 design. The kink-shaped bend 14 is according to Fig. 3a, b and c, as well as Fig. 6a and Fig. 6b is formed by means of a protrusion on the outer surface section 13 of one of the clip wings, namely the second clip wing 7. This protrusion is nose- or wave-shaped when viewed in the retaining clip cross-sectional plane Q and forms a corresponding rib perpendicular to the retaining clip cross-sectional plane Q.

[0044] The outer surface section 13 of the clip wings 6, 7 and / or a side of the clamping wing 10 facing the outer surface section 13 is, according to the first and second embodiments of the medical retaining clip 1, corrugated or ribbed in the projection direction of the clamping wing 10 in order to define at least one, preferably a plurality of, individual detent positions RP, RPI, RPV spaced apart in the projection direction of the clamping wing 10 within the receiving gap 11.

[0045] Also according to the third embodiment of the medical retaining clip 1 from Fig. 4 The surfaces of the locking or clamping area 8 forming the receiving gap 11 have correspondingly corrugated or ribbed shapes. According to Fig. 2 is exactly one detent position RP, RPI is implemented. According to Fig. 3a, b and c, as well as Fig. 4, Fig. 6a and Fig. 6b each has two rest positions RP, RPI, RPV.

[0046] The receiving slot 11 has a feed section 15 immediately adjacent to the innermost detent position RPI as seen in the projection direction of the clamping wing 10, through which the hose or tube 9 can be guided to the innermost detent position RPI and which, seen in the retaining clip cross-sectional plane Q, extends along a third direction R3, which is at an angle β of 65° to 115°, preferably of 80° to 100°, in particular according to Fig. 2 of 90°, to a perpendicular to the first direction R1.

[0047] The receiving gap 11 has an innermost section, formed here, viewed from the innermost detent position RPI opposite to the projection direction of the clamping wing 10. The length of this innermost section defines, opposite to the projection direction of the clamping wing 10, the length of a lever formed by means of the clamping wing 10 for generating a clamping force on a hose or a tube 9 arranged here in the innermost detent position RPI.

[0048] According to the first and second embodiments of the medical retaining clip 1, the distance A between the inner section 12 and the outer section 13 of the clip wings 6, 7 is, in the radial direction towards the detent position RP, RPI, RPV, at most as large as the thickness d of the clip wings 6, 7 adjacent to the detent or clamping area 8. Similarly, according to Fig. 4 correspondingly small distances A can be defined. According to Fig. 4 is a distance A between the inner section 12 and a surface of the detent or clamping area 8 forming the detent position RP, RPI, RPV in the radial direction to the detent position RP, RPI, RPV, at most as large as a thickness d of the clip wings 6, 7 adjacent to the detent or clamping area 8.

[0049] The clip wings 6, 7 have a substantially constant thickness d adjacent to the locking or clamping area 8, except for a rounding at the respective projecting end and possibly for the elevation to form the kink-shaped bend 14.

[0050] The recording slot 11 shows, according to Fig. 3a, b and c, as well as Fig. 4, Fig. 6a and Fig. 6b, between its outer opening 16 and the innermost detent position RPI, a pre-detent position RPV is provided in which the hose or tube 9 can be arranged, in particular clamped.

[0051] The pre-locking position RPV is connected to the receiving slot opening 16 via a receiving slot section of maximum curvature, preferably with a kink-shaped bend 14.

[0052] The second direction R2 is, according to the second and third embodiments of the retaining clip, made of, among other things, Fig. 3a and Fig. 4 can also be determined as follows. Here, not only the situation in which no hose or pipe 9 is received in the locking or clamping area 8 can be considered, but also the situation in which the hose or pipe 9 is arranged in the pre-locking position RPV. With the hose or pipe 9 arranged in the pre-locking position RPV, the clamping wing 10 exhibits, if any, only a negligible bend compared to the design position without a hose or pipe 9 received in the locking or clamping area 8. The clamping wing 10 then begins to bend again, in particular, when the hose or pipe 9 is moved from the pre-locking position RPV to the innermost locking position RPI. The second direction R2 then also refers to the direction in which the clamping wing 10, in particular the projecting end of the neutral fiber of the clamping wing 10, bends at the beginning of this renewed bending.

[0053] Fig. 1, Fig. 5a and Fig. Figure 5b shows a medical device 4 for receiving a medical tool 17 with a handpiece 3, by which the medical device 4 can be guided by a medical professional and with at least one medical retaining clip 1, by means of which a hose or tube 9 can be detachably connected and / or connected to the medical device 4, in particular its handpiece 3. Fig. 1, Fig. 5a and Fig. Figure 5b shows the related situation.

[0054] The hose or tube 9 is connected to the medical device 4 by a further, so-called pre-holding clip 19 in an area adjacent to the handpiece 3. The hose or tube 9 terminates at an end projecting from the holding clip 1, which faces the tool 17 and is located on a side of the holding clip 1 facing away from the pre-holding clip 19. Viewed in a cross-sectional plane, the pre-holding clip 19 has two clamping wings, between which a receiving gap, open on one side and oriented radially, is formed, the outer opening of which lies tangentially to the clip wings of the pre-holding clip 19. Alternatively, a second holding clip according to the invention could be used instead of the pre-holding clip 19.

[0055] Based on Fig. 5a and Fig. Section 5b now describes a method for changing the tool on the medical device 4, in which the handpiece 3 with the medical holding clip 1 detachably connected to it is moved about the longitudinal axis of the handpiece 3, from which in Fig. 5a shows the tool 17 locking position towards the Fig. 5b shows the tool 17 released, rotated position 18, while the hose or tube 9 is clamped and remains clamped in the medical retaining clip 1.

[0056] The hose or tube 9 is deformed into a helix when the handpiece 3 is rotated into its twisted position 18, in which the tool 17 is released. The relative position of the holding clip 19 to the medical device 4 remains unchanged during rotation.

[0057] By means of Fig. 6a and Fig. 6b shows a particular advantage of the design of the retaining clip 1 with a pre-locking position RPV. Fig. 6a corresponds to Fig. 5a and shows a hose or tube 9 arranged in the innermost detent position RPI. Fig. 6b corresponds to Fig. Figure 5b shows a hose or tube 9 arranged obliquely in the receiving slot 11 relative to the medical device 4. Despite this oblique arrangement, the hose or tube 9 is securely clamped in the receiving slot 11. The hose or tube 9 is supported at the locking or clamping area 8 in a first end-face region of the retaining clip 1 in the area of ​​the innermost locking position RPI, and also in a second end-face region of the retaining clip 1 opposite the first, in the area of ​​the pre-locking position RPV, particularly in the area of ​​the kinked bend 14. Furthermore, the clamping wing 10 contacts the hose or tube 9 centrally between the two end faces of the retaining clip 1 in this situation, so that a corresponding clamping force acts on the hose or tube 9 from the elastically bent clamping wing 10.

[0058] When the handpiece 3 is turned back from the twisted position 18 into the position locking the tool 17, the hose or tube 9 preferably slides automatically into the Fig. 6a shown position, namely the innermost detent position RPI, and is then arranged parallel to the medical device 4. Reference symbol list 1 medical holding clip 2 Medical device 3 medical handpiece 4 medical devices 5 Assembly area 6 first clip wing 7 second clip wing 8 Locking or clamping range 9 Hose or pipe 10 clamping wings 11 Recording slot 12 Inside page section 13 Outside section 14 kink-shaped bend 15 Feed section of the intake slot 11 16 outer opening of the recording slot 11 17 medical tools 18 twisted position of the handpiece 3 19 Pre-hold clip Q Retaining clip cross-sectional plane R1 first direction R2 second direction R3 third direction α angle β angle RP rest position RPI innermost detent position RPV pre-resting position A distance d thickness

Claims

[1] Medical retaining clip (1) for detachable mounting on a medical device (2) in particular on a medical handpiece (3) of a medical device (4) with - a mounting area (5) having two clip wings (6, 7) which together form a C or U shape and which, seen in a retaining clip cross-sectional plane (Q), are elastically bendable along a first direction (R1) to widen the C or U shape for clip mounting of the retaining clip (1) on or to the medical device (2) - a locking or clamping area (8) which is designed and configured to clamp and release a hose or tube (9) preferably parallel to the medical device (2), characterized by, that the locking or clamping area (8) has a clamping wing (10) formed integrally with or attached to the mounting area (5), which forms a receiving gap (11) open on one side between itself and the locking or clamping area (8) or the mounting area (5) and which is elastically bendable in order to widen the receiving gap (11), as seen in the retaining clip cross-sectional plane (Q), along a second direction (R2) which is at an angle (α) other than 0° to the first direction (R1). [2] Medical holding clip (1) according to claim 1, characterized by , that the clip wings (6, 7) define an inner section (12) which is intended to engage with the medical device (2) preferably in a linear clamping engagement and the clip wings (6, 7) define an outer section (13) facing away from the inner section (12) which is intended to form the receiving gap (11) together with the clamping wing (10). [3] Medical retention clip (1) according to claim 1 or 2, characterized by , that the receiving gap (11) extends essentially tangentially to the C or U shape of the clip wings (6, 7). [4] Medical holding clip (1) according to claim 1, 2 or 3, characterized by , that the receiving slot (11), viewed in the overhang direction of the clamping wing (10), is straight, meandering, curved or with at least one kink-shaped bend (14). [5] Medical holding clip (1) according to any one of claims 2 to 4 above, characterized by , that the outer surface section (13) of the clip wings (6, 7) and / or a side of the clamping wing (10) facing the outer surface section (13), viewed in the overhang direction of the clamping wing (10), is corrugated or ribbed to define at least one, preferably a plurality of, individual detent positions (RP, RPI, RPV) spaced apart in the overhang direction of the clamping wing (10) within the receiving gap (11). [6] Medical holding clip (1) according to claim 5, characterized by , that the receiving slot (11) has a feed section (15) immediately adjacent to the innermost detent position (RPI) as seen in the projection direction of the clamping wing (10), through which the hose or tube (9) can be guided to the innermost detent position (RPI) and which, seen in the retaining clip cross-sectional plane (Q), extends along a third direction (R3) which is at an angle (β) of 65° to 115°, preferably of 80° to 100°, in particular of 90°, to a perpendicular to the first direction (R1). [7] Medical holding clip (1) according to any one of claims 2 to 6 above, characterized by , that a distance (A) between the inner section (12) and the outer section (13) of the clip wings (6, 7) in the radial direction towards the detent position (RP, RPI, RPV) is at most as large as a thickness (d) of the clip wings (6, 7) adjacent to the detent or clamping area (8). [8] Medical holding clip (1) according to any one of the preceding claims 5, 6 or 7, characterized by , that the receiving gap (11) between its outer opening (16) and the innermost detent position (RPI) has a pre-detent position (RPV) in which the hose or tube (9) can be arranged, in particular clamped. [9] Medical holding clip (1) according to claim 8, characterized by , that the pre-lock position (RPV) is connected to the receiving slot opening (16) via a receiving slot section of maximum curvature, preferably with a kink-shaped bend (14). [10] Medical device (4) for receiving a medical tool (17) with - a handpiece (3) by which the medical device (4) can be operated by a physician and with - at least one medical retaining clip (1) according to one of the preceding claims, by means of which a hose or tube (9) can be detachably connected and / or connected to the medical device (4), in particular its handpiece (3). [11] Method for changing the tool on a medical device (4) according to claim 10, in which the handpiece (3) with the medical retaining clip (1) detachably connected thereto is rotated about the longitudinal axis of the handpiece (3) to release or lock the medical tool (17), while the hose or tube (9) is clamped and remains clamped in the medical retaining clip (1). [12] Method according to claim 11, characterized by , that the hose or tube (9) is deformed into a helix when the handpiece (3) is turned into its twisted position (18) in which the tool (17) is released.

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