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CN-121985922-A - Clamping device and tool holder

CN121985922ACN 121985922 ACN121985922 ACN 121985922ACN-121985922-A

Abstract

The invention relates to a clamping device (10) having a clamping device (12) and a fastening device (14) for supporting a surgical tool in a clamped state on a perforated plate (78). The clamping device (12) has a plurality of clamping springs (16), each having a clamping limb (26) for clamping a surgical tool. A plurality of clamping springs (16) extends from a base (18) of the clamping device (12) in a longitudinal direction (20) of the clamping arrangement (10). The clamping limb (26) defines an insertion opening (30) for inserting a surgical tool into the clamping device (12). The fastening device (14) has a plurality of fastening springs (34), each having a fastening limb (40) for fastening the clamping means (10) to the perforated plate (78). A plurality of fastening springs (34) extends from a base (36) of the fastening device (14) in a longitudinal direction (20) of the clamping arrangement (10). Each fastening limb (40) has a fastening unit (44) for fastening the clamping device (10) to the perforated plate (78). The clamping device (12) and the fastening device (14) are connected to each other by means of a friction, integral and/or interlocking connection.

Inventors

  • Ada Ayi Becker

Assignees

  • 蛇牌股份公司

Dates

Publication Date
20260505
Application Date
20241002
Priority Date
20231009

Claims (15)

  1. 1. A clamping device (10) for supporting a surgical tool in a clamped condition on a perforated plate (78), comprising: -a clamping device (12), and A fastening device (14), Wherein the clamping device (12) has a plurality of clamping springs (16), each having a clamping limb (26) for clamping the surgical tool, Wherein the plurality of clamping springs (16) extends from a base (18) of the clamping device (12) in a longitudinal direction (20) of the clamping means (10), Wherein the clamping limb (26) defines an insertion opening (30) for inserting the surgical tool into the clamping device (12), Wherein the fastening device (14) has a plurality of fastening springs (34), each having a fastening limb (40) for fastening the clamping means (10) to the perforated plate (78), Wherein the plurality of fastening springs (34) extends from a base (36) of the fastening device (14) along the longitudinal direction (20) of the clamping means (10), Wherein each fastening limb (40) has a fastening unit (44) for fastening the clamping device (10) to the perforated plate (78), The clamping device is characterized in that, -The clamping device (12) and the fastening device (14) are connected to each other by means of a friction, integral and/or interlocking connection, and -The clamping device (12) and the fastening device (14) are each formed of bent sheet metal.
  2. 2. Clamping device (10) according to claim 1, -Wherein the metal sheet forming the clamping device (12) and the metal sheet forming the fastening device (14) are made of the same material, and/or -Wherein the metal sheet forming the clamping device (12) and the metal sheet forming the fastening device (14) are formed to have the same thickness.
  3. 3. Clamping device (10) according to any of the preceding claims, -Wherein the clamping device (12) and the fastening device (14) are separately designed components, which are connected to each other by means of the friction, integral and/or interlocking connection.
  4. 4. Clamping device (10) according to any of the preceding claims, -Wherein the base (18) of the clamping device (12) and the base (36) of the fastening device (14) are connected to each other by means of the friction, integral and/or interlocking connection.
  5. 5. Clamping device (10) according to any of the preceding claims, -Wherein the clamping device (12) and/or the fastening device (14) are designed as stamped and bent parts.
  6. 6. Clamping device (10) according to any of the preceding claims, Wherein the clamping device (12) has a first locking element, Wherein the fastening device (14) can have a second locking element corresponding to the first locking element, preferably complementary to the first locking element, -Wherein the interlocking connection is a locking connection formed by the first locking element and the second locking element.
  7. 7. Clamping device (10) according to any of the preceding claims, Wherein the clamping device (12) has a plurality of bent tabs (64), -Wherein the interlocking connection is formed by clamping the fastening device (14) with the bent bending tab (64) of the clamping device (12), and/or Wherein the fastening device (14) has a plurality of bent tabs, -Wherein the interlocking connection is formed by clamping the clamping device (12) with the bent bending tab of the fastening device (14).
  8. 8. Clamping device (10) according to any of the preceding claims, -Wherein the interlocking connection is formed by means of a clinch connection.
  9. 9. Clamping device (10) according to any of the preceding claims, -Wherein the interlocking connection is formed by means of a deep drawing connection.
  10. 10. Clamping device (10) according to any of the preceding claims, -Wherein the interlocking connection is formed by means of an upset connection.
  11. 11. Clamping device (10) according to any of the preceding claims, -Wherein the integral connection is formed by means of an adhesive connection, a welded connection, in particular a spot welded connection and/or a soldered connection.
  12. 12. Clamping device (10) according to any of the preceding claims, Wherein the fastening unit (44) has a first projection (46, 50) and a second projection (48, 52), -Wherein the fastening unit (44) is designed to accommodate the perforated plate (78) between the first (46, 50) and second (48, 52) projections for fastening the clamping device (10) to the perforated plate (78).
  13. 13. A tool holder (100) for supporting a surgical tool in a designated position, comprising: -a clamping device (10) according to any of the preceding claims, and -Said perforated plate (78) having a hole (80), -Wherein the clamping device (10) is fastened to the hole (80) of the perforated plate (78) by means of the fastening unit (44).
  14. 14. The tool holder (100) according to claim 13, Wherein the perforated plate (78) has a plurality of teeth (82) defining the holes (80), -Wherein each fastening limb (40) is arranged between two adjacent teeth (82).
  15. 15. The tool holder (100) according to claim 13 or claim 14, Wherein the tool holder (100) has a further perforated plate (84) for securing the clamping device (10) against rotation, -Wherein the further perforated plate (84) is arranged parallel and offset to the perforated plate (78).

Description

Clamping device and tool holder The invention relates to a clamping device and a tool holder with a clamping device. Clamping devices are commonly used to support surgical tools in a clamped position on a perforated plate. DE 10 2021 106 109 A1, DE 10 2021 106 110 A1 and DE 10 2021 106 111 A1 each show a clamping device which is designed as one piece. The object of the present invention is to provide a clamping device with improved properties, in particular which can be produced economically. Furthermore, it is an object of the invention to provide a tool holder with such a clamping device. The present invention achieves these objects by providing a clamping device having the features of claim 1 and by providing a tool holder having the features of claim 13. Advantageous embodiments and developments of the invention emerge from the dependent claims. A clamping device according to the invention is designed for supporting a surgical tool in a clamped state on a perforated plate. The clamping device has a clamping device and a fastening device. The clamping device has a plurality, in particular 1 to 10, preferably 1 to 4 clamping springs, each having a clamping limb for clamping the surgical tool. A plurality of clamping springs extends from the base of the clamping device in the longitudinal direction of the clamping device. The clamping limb defines an insertion opening for inserting a surgical tool into the clamping device. The fastening device has a plurality, in particular 1 to 10, preferably 1 to 4, fastening springs, each having a fastening limb for fastening the clamping device to the perforated plate. A plurality of fastening springs extends from one base of the fastening device in the longitudinal direction of the clamping means. Each fastening limb has a fastening unit for fastening the clamping device, in particular in a detachable manner, to the perforated plate. The clamping device and the fastening device are connected to each other by means of a friction, integral and/or interlocking connection. The clamping device and the fastening device may each be formed from bent sheet metal. The friction, integral and/or interlocking connection advantageously allows a modular design of the clamping device. For example, the modular design allows the fastening device and/or clamping device to be used as standardized individual components in other devices. This allows the fastening device and/or the clamping device to be manufactured in larger quantities than required for the production of the clamping means, whereby the costs per clamping means are reduced and the clamping means can thus be manufactured economically. Another aspect of the clamping device may be that by having the clamping device and the fastening device each formed from a bent sheet metal material, the manufacturing of the clamping device is simplified and economical. In particular, the clamping device and the fastening device may be manufactured using the same or similar bending tools, which may further save costs. The surgical tool may be an instrument head, in particular a drilling or milling tool with or without a tool shank. The surgical tool may be designed to be inserted into a hand-held surgical instrument. The surgical tool may be inserted into the clamping device by inserting the surgical tool into the insertion opening. The surgical tool may be brought into a clamped state by inserting it into the clamping device. In the clamped state, each clamping spring may apply a spring force to the surgical tool that presses the surgical tool against the other clamping springs. The spring force may be generated, for example, by pretensioning a plurality of clamping springs when the surgical tool is inserted into the clamping device. Each clamping spring may have an insertion bevel for inserting a surgical tool into the clamping device. The insertion bevel may limit the insertion opening. Insertion may be accomplished by pressing the surgical tool against the insertion ramp, which slides the surgical tool along the insertion ramp and pretensions the plurality of clamping springs until a clamped state of the surgical tool is reached. The surgical tool can be inserted into the clamping device by a directional movement of the surgical tool parallel to the longitudinal direction, or in particular opposite. The longitudinal direction may run parallel to the longitudinal axis of the clamping device. Each clamping limb may have a contact portion for frictional and/or interlocking contact with the surgical tool in the clamped state. Each contact section may protrude radially inward. The plurality of clamping springs may be arranged in particular evenly and/or circumferentially distributed around the longitudinal axis. The plurality of fastening springs may be arranged in particular evenly and/or circumferentially distributed around the longitudinal axis. The base of the clamping device and/or the base of the fastening device may have a portion desig