EP4568608A1 - Gelenkarretierung für haltearme medizinischer operationseinrichtungen - Google Patents
Gelenkarretierung für haltearme medizinischer operationseinrichtungenInfo
- Publication number
- EP4568608A1 EP4568608A1 EP23757219.3A EP23757219A EP4568608A1 EP 4568608 A1 EP4568608 A1 EP 4568608A1 EP 23757219 A EP23757219 A EP 23757219A EP 4568608 A1 EP4568608 A1 EP 4568608A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gear
- tooth
- roller
- rollers
- joint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/30—Surgical robots
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/50—Supports for surgical instruments, e.g. articulated arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J19/00—Accessories fitted to manipulators, e.g. for monitoring, for viewing; Safety devices combined with or specially adapted for use in connection with manipulators
- B25J19/0004—Braking devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00147—Holding or positioning arrangements
- A61B1/00149—Holding or positioning arrangements using articulated arms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B2017/00982—General structural features
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/50—Supports for surgical instruments, e.g. articulated arms
- A61B2090/508—Supports for surgical instruments, e.g. articulated arms with releasable brake mechanisms
Definitions
- the invention relates to a joint lock for holding arms of medical operating devices with a gear wheel arranged on a pivot axis of a joint and a spring-loaded roller which is in direct operative connection with the gear wheel.
- Holding arms for medical operating devices such as surgical robots or holding stands
- the joints of the holding arms are equipped with joint locks, via which the holding arms can be fixed in the currently required position.
- a joint locking device with a gear wheel arranged on a pivot axis of a joint and a spring-loaded roller that is in direct operative connection with the gear wheel is known from the prior art.
- the spring-loaded roller is pressed into a tooth gap between two teeth of the gear and thus prevents the holding arm from pivoting further.
- the gear arranged on the pivot axis of the joint has as many teeth as possible and thus also many tooth gaps that are used for locking purposes. The more teeth a gear has, the narrower and more pointed the tips of the respective teeth are.
- a joint lock designed in this way has certainly proven itself in practice, but it has turned out that it is not just the small rollers due to the contact pressure generated by the spring load and the rolling over the pointed teeth or Tooth heads, but also the teeth or The tooth heads of the gear are subject to high levels of wear, which can lead to reduced locking performance of the joint.
- the invention is based on the task of designing a joint lock for holding arms of medical operating devices in such a way that it ensures reduced wear on the roller and/or gear while maintaining the same positioning capability of the joint.
- the solution to this problem is characterized according to the invention by two spring-loaded rollers, which are in direct operative connection with at least one gear in such a way that in each locking position of the joint at least one roller always engages in a tooth gap between two adjacent teeth of at least one gear.
- the two rollers are mounted in a tiltable manner at the end of a pivot lever which is spring-loaded via at least one spring element and are in direct operative connection with a single gear, the tilting plane in which the two rollers can be tilted relative to the gear , is arranged parallel to the gear.
- the tiltable mounting of the two rollers facilitates the transition from one tooth gap to the next tooth gap when pivoting the holding arm into a new position.
- the two rollers are arranged at the ends on a two-armed rocker lever, the rocker lever being pivotably mounted on the end of the pivot lever remote from the at least one spring element.
- the invention proposes that in each locking position a roller is arranged in a tooth gap of the gear while the other roller is arranged on a tooth tip of the same gear.
- This arrangement of the two rollers relative to each other and relative to the tooth gaps and tooth heads of the gear makes it possible for each rotation of the gear to be only half the tooth gap distance a roller, namely the one previously arranged on the tooth head, engages in a locking manner in a tooth gap, while the roller previously arranged in the tooth gap is now arranged on the nearest tooth head.
- This adjustment of the gear in half steps, measured by the tooth gap distance of the gear enables the same number of locking positions of the joint as when using a gear with twice as many teeth.
- the two rollers are mounted in a tiltable manner at the end of a pivot lever which is spring-loaded via at least one spring element and that each of the two rollers is in direct operative connection with a separate gear, the two rollers being divided into two parallel tilting planes can be tilted relative to the two gears, which are both arranged parallel to the two gears.
- the contact pressure exerted via the at least one spring element on the pivoting lever and thus on the two rollers is transmitted evenly to the gears assigned to the respective rollers in order to achieve effective locking of the joint.
- the invention proposes that when using two gears, the two identically designed gears are arranged parallel to one another on the pivot axis of the joint in such a way that each tooth of one gear is arranged centrally to a tooth gap of the other gear.
- the two rollers are arranged at the ends on a two-armed rocker lever, the rocker lever being pivotably mounted on the end of the pivot lever remote from the at least one spring element.
- This arrangement of the two gears relative to each other also allows locking in half steps; measured by the tooth gap distance of the individual gears, this enables the same number of locking positions of the joint as when using a gear with twice as many teeth.
- one roller in each locking position, one roller is arranged in a tooth gap of one gear, while the other roller is arranged on a tooth head of the other gear.
- each roller is only positioned selectively on the two sides when arranged in a tooth gap tooth flanks of the respective tooth gap. The fact that the rollers only contact the tooth flanks at specific points guarantees an exact and play-free positioning of the respective roller in the corresponding tooth gap.
- the contact areas of the tooth flanks, where a roller rests at points on the tooth flanks, is designed according to the invention as a straight line in order to ensure a defined introduction of force of the contact pressure of the roller into the tooth flanks lying tangentially on the roller for secure locking of the joint.
- the invention proposes that the tooth base of each tooth gap between two teeth arranged next to one another is formed in the shape of a partial circle in such a way that the radius of each tooth base of the at least one gear is smaller than the radius of each roller.
- Fig. 1 a schematic front view of a first embodiment of a joint lock according to the invention for holding arms;
- Fig. 2 a schematic front view of a second embodiment of a joint lock according to the invention for holding arms
- FIG. 3 an enlarged schematic representation of the detail I I I according to FIG. 1 .
- the figure Fig. 1 shows a joint lock 1 for holding arms of medical surgical devices, such as surgical robots or holding stands.
- the holding arm which can be pivoted about a pivot axis 2, is not shown in the figures, since the structure and structural design of the joint lock 1 is independent of the design of the holding arm.
- the joints of the holding arms are equipped with at least one joint locking device 1, via which the respective holding arms can be fixed in the currently required position.
- joint lock 1 essentially consists of a gear 3 arranged on the pivot axis 2 of a joint and two spring-loaded rollers 4 and 5 which are in direct operative connection with the gear 3.
- the two rollers 4, 5 are mounted so that they can tilt at the end of a pivot lever 7 which is spring-loaded via at least one spring element 6.
- the pivoting lever 7 in turn is mounted on a joint housing 9 so as to be pivotable about a pivot axis 8.
- the at least one spring element 6 is mounted on the one hand on the pivot lever 7 and on the other hand on an abutment 10 on the joint housing 9 .
- the two rollers 4 and 5 are arranged at the ends on a two-armed rocker lever 11, the rocker lever 11 being pivotably mounted on the end of the rocker lever 7 remote from the at least one spring element 6.
- the tilting plane KE-1 in which the two rollers 4 and 5 can be tilted relative to the gear 3, is arranged parallel to the gear 3.
- the two rollers 4 and 5 are arranged relative to the gear 3 on the rocker arm 11 in such a way that in each locking position one roller 4 or 5 is arranged in a tooth gap 12 between two adjacent teeth 13 of the gear 3, while the other roller 5 or 4 is on a tooth head 14 of a tooth 13 of the same gear 3 is arranged.
- the ones in Fig. 1 shown joint lock 1 works as follows:
- the pivot lever 7 presses with the spring force of the spring element 6 the two tiltable rollers 4 and 5 mounted on the rocker lever 11 downwards in the direction of the gear 3 so that the roller 4 is recorded in a tooth gap 12 between two adjacent teeth 13 of the gear 3 is arranged, while the other roller 5 is arranged on a tooth head 14 of a tooth 13 of the same gear 3.
- the spring-loaded pivoting lever 7 ensures that the rollers 4 and 5 are always in direct operative connection with the gear 3 and the respective roller 4 or 5 arranged in a tooth gap 12 fixes the gear 3 and thus the holding arm in the respective position.
- Fig. 2 shown second embodiment of the joint lock 1 differs from that in Fig. 1 and previously described joint lock 1 in that now two identically designed gears 3 and 17 are arranged parallel to each other on the pivot axis 2 of the joint.
- the two gears 3 and 17 are arranged relative to one another in such a way that each tooth 13 of one gear 3 or 17 is arranged centrally to a tooth gap 12 of the other gear 17 or 3.
- the two rollers 4 and 5 are mounted so that they can be tilted at the end of the pivot lever 7, which is spring-loaded via at least one spring element 6, so that each of the two rollers 4 and 5 is in direct operative connection with a separate gear wheel 3, 17 .
- the spring-loaded pivoting lever 7 in turn is mounted on the joint housing 9 so as to be pivotable about a pivoting axis 8, with the at least one spring element 6 being mounted on the one hand on the pivoting lever 7 and on the other hand on an abutment 10 on the joint housing 9.
- Fig. 2 you can see the two roles
- rocker lever 11 is pivotably mounted on the end of the rocker lever 7 remote from the at least one spring element 6.
- the two rollers 4 and 5 can be tilted in two parallel tilting planes KE-2 relative to the two gears 3 and 17, the two tilting planes KE-2 being parallel to the two gears 3 and 17 are arranged.
- the two rollers 4 and 5 are arranged relative to the gears 3 and 17 on the rocker arm 11 in such a way that in each locking position a roller 4 or 5 is arranged in a tooth gap 12 between two adjacent teeth 13 of one gear 3 or 17, while the another roller 5 or 4 is arranged on a tooth head 14 of a tooth 13 of the other gear 17 or 3.
- the pivoting lever 7 presses the two rollers 4 and 4 which are mounted in a tiltable manner on the rocker lever 11 with the spring force of the spring element 6
- roller 4 recording is arranged in a tooth gap 12 between two adjacent teeth 13 of the gear 3, while the other roller 5 is arranged on a tooth head 14 of a tooth 13 of the other gear 17.
- This adjustment of the gear 3 in half steps, measured by the tooth gap distance of the gear 3, enables the same number of locking positions of the joint as when using a gear with twice as many teeth, but only one roller for locking in a tooth gap 12. Only the storage of the rollers 4 and 5 on the rocker lever 11, which can be tilted relative to the pivoting lever 7, enables the rollers 4 and 5 to lock at half the tooth gap distances.
- the spring-loaded pivoting lever 7 ensures that the rollers 4 and 5 are always in direct operative connection with the two gears 3 and 17 and that the respective roller 4 or 5 arranged in a tooth gap 12 holds the gear 3 or 17 and thus the holding arm in the j fixed in respective position.
- the two in the figures Fig. 1 and 2 for the design of a joint lock 1 are characterized in that due to the two rollers 4 and 5 used, which enable locking at half tooth gap intervals, the individual gears 3 and 17 can be designed with relatively wide tooth gaps and also the Rollers 4 and 5 can have a correspondingly large radius, so that the wear on the rollers 4 and 5 as well as on the tooth heads 14 of the gears 3 and 17 is significantly reduced compared to the joint locks 1 known from the prior art.
- each roller 4 or 5 lies in a tooth gap 12 in the arrangement Gear 3 or 17 only at certain points on the tooth flanks 16 on both sides of the respective tooth gap 12, as shown in FIG. 3 is shown.
- the contact areas of the tooth flanks 16, where a roller 4 or 5 rests at points on the respective tooth flanks 16, is advantageously designed as a straight line in order to ensure a defined introduction of the contact pressure of the roller 4 or 5 into the tangential position for secure locking of the joint the tooth flanks 16 adjacent to the roller 4 or 5.
- the tooth base 18 of each tooth gap 12 between two teeth 13 arranged next to one another is designed in the shape of a part circle so that the radius of each tooth base 18 of the gears 3 and 17 is smaller than the radius of each roller 4 or 5.
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- Robotics (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Pathology (AREA)
- Mechanical Engineering (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
- Transmission Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022119958.4A DE102022119958B3 (de) | 2022-08-09 | 2022-08-09 | Gelenkarretierung für Haltearme medizinischer Operationseinrichtungen |
| PCT/EP2023/071996 WO2024033393A1 (de) | 2022-08-09 | 2023-08-09 | Gelenkarretierung für haltearme medizinischer operationseinrichtungen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4568608A1 true EP4568608A1 (de) | 2025-06-18 |
Family
ID=87696096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23757219.3A Pending EP4568608A1 (de) | 2022-08-09 | 2023-08-09 | Gelenkarretierung für haltearme medizinischer operationseinrichtungen |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4568608A1 (de) |
| CN (1) | CN119677481A (de) |
| DE (1) | DE102022119958B3 (de) |
| WO (1) | WO2024033393A1 (de) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1174229A (en) * | 1981-07-23 | 1984-09-11 | Henry Vandelinde | Drive mechanism for cable drums |
| DE3520967A1 (de) * | 1985-06-12 | 1986-12-18 | Mannesmann AG, 4000 Düsseldorf | Sicherheitsbremsvorrichtung |
| US5513723A (en) * | 1994-07-01 | 1996-05-07 | Harnischfeger Corporation | Double-masted crane with improved brake arrangement |
| DE102007006892A1 (de) * | 2007-02-13 | 2008-08-14 | University Of Dundee | Haltevorrichtung für medizinische Zwecke |
| JP5135069B2 (ja) | 2008-06-12 | 2013-01-30 | 三鷹光器株式会社 | 医療用器具保持アーム装置 |
| DE102011004926A1 (de) * | 2011-03-01 | 2012-09-06 | Karl Storz Gmbh & Co. Kg | Einstellbare Haltevorrichtung für ein Endoskop |
| DE202020107591U1 (de) * | 2020-12-29 | 2021-02-02 | Isys Medizintechnik Gmbh | Positionierarm |
-
2022
- 2022-08-09 DE DE102022119958.4A patent/DE102022119958B3/de active Active
-
2023
- 2023-08-09 WO PCT/EP2023/071996 patent/WO2024033393A1/de not_active Ceased
- 2023-08-09 EP EP23757219.3A patent/EP4568608A1/de active Pending
- 2023-08-09 CN CN202380058915.5A patent/CN119677481A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024033393A1 (de) | 2024-02-15 |
| DE102022119958B3 (de) | 2024-02-01 |
| CN119677481A (zh) | 2025-03-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 17P | Request for examination filed |
Effective date: 20250205 |
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| AK | Designated contracting states |
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| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| P01 | Opt-out of the competence of the unified patent court (upc) registered |
Free format text: CASE NUMBER: UPC_APP_0012904_4568608/2025 Effective date: 20251111 |