EP3027137A1 - Chirurgisches instrument - Google Patents
Chirurgisches instrumentInfo
- Publication number
- EP3027137A1 EP3027137A1 EP14741523.6A EP14741523A EP3027137A1 EP 3027137 A1 EP3027137 A1 EP 3027137A1 EP 14741523 A EP14741523 A EP 14741523A EP 3027137 A1 EP3027137 A1 EP 3027137A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- zugmitteltrum
- zugmittelpaares
- surgical instrument
- instrument according
- tensile stiffness
- 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.)
- Ceased
Links
- 239000012636 effector Substances 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims description 16
- 238000005520 cutting process Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000001356 surgical procedure Methods 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 12
- 230000003068 static effect Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000036316 preload Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002324 minimally invasive surgery Methods 0.000 description 2
- 238000007665 sagging Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 238000002432 robotic surgery Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- A61B17/00—Surgical instruments, devices or methods
- A61B17/00234—Surgical instruments, devices or methods for minimally invasive surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/00234—Surgical instruments, devices or methods for minimally invasive surgery
- A61B2017/00292—Surgical instruments, devices or methods for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means
- A61B2017/003—Steerable
- A61B2017/00318—Steering mechanisms
- A61B2017/00323—Cables or rods
- A61B2017/00327—Cables or rods with actuating members moving in opposite directions
-
- 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
- A61B34/70—Manipulators specially adapted for use in surgery
- A61B34/71—Manipulators operated by drive cable mechanisms
- A61B2034/715—Cable tensioning mechanisms for removing slack
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
- A61M25/0133—Tip steering devices
- A61M25/0147—Tip steering devices with movable mechanical means, e.g. pull wires
Definitions
- the present invention relates to a, in particular robot-guided, surgical instrument, a surgical robot with such an instrument and method for laying out and for remote actuation of such an instrument.
- a jaw of a wire clamp which is coupled to a traction sheave, by opposing actuation of two cable strands, the
- the cable strands are biased.
- this bias loads the cable strands and bearings and limits the maximum force that can be applied by the jaw, in the present case also an antiparallel for a more compact representation
- Force pair i. a torque
- a force generally referred to as a force
- An object of an embodiment of the present invention is to provide an improved, in particular robot-guided, surgical instrument or to improve its operation. This task is performed by a surgical instrument with the characteristics of
- Claim 13 protects a surgical robot with a corresponding instrument.
- the subclaims relate to advantageous developments.
- a surgical instrument has one or more pre-tensioned pairs of traction means, each with a first Switzerlandstofftrum and an opposite second Switzerlandstofftrum for opposing actuation of a degree of freedom of the instrument by a drive arrangement.
- a traction means may in particular rope or cable-like or belt or belt-like, in particular flat, wedge and / or ribbed or belt-like design. It may in one embodiment plastic and / or metal, in particular consist thereof.
- Under a Switzerlandstofftrum is present in particular the (free) section of a traction device between a input member of the input arrangement and a
- Output member of a driven assembly in particular a
- a traction means axially fixed - relative to a longitudinal axis of the traction means - on the input and output member permanently or detachably, in particular friction, substance or positively fixed. Then, the traction means or its portion between the attachments to input and output member, the Glasstofftrum in the context of the present invention. In another embodiment wraps around the
- Traction means the input and output member frictionally each at least partially. Then, a section of the traction means between the on and off of the input and output member respectively represents a traction means in the sense of the present invention.
- a traction means in the sense of the present invention equally a fixed range of (fixed) Pulling means or one
- a pulling means open at one end wraps around at least partially the input member with frictional engagement, with its two ends each on the
- a traction means open at one end wraps at least partially frictionally the driven member, its two ends being respectively fixed to the opposite input member. Then, a portion of the traction means between the on or expiration of the or on the output member and the attachment to the input member is in each case a Switzerlandstofftrum in the context of the present invention.
- the first Switzerlandstofftrum and the second Switzerlandstofftrum one or more Buchstoffcrue each driven, in particular end effector side and / or input side connected to each other or be attached separately from each other on an input and / or output member.
- One or more pairs of traction means can be closed or ring-like, semi-open or unilaterally connected or formed by two separate traction means.
- the first and second Werchutrum actuated by the same input member and / or actuate the same output member. For example, they can wrap around a traction sheave or be fixed to two legs of a rocker.
- the first and second Switzerlandstofftrum be actuated by separate Eintriebsglieder and / or actuate separate output members
- the separate Eintriebsglieder the Eintriebsan Aunt or the separate output members of the output assembly preferably, in particular mechanically, hydraulically, pneumatically and / or control technology, synchronized in opposite directions are.
- Linear actuators pull the first and second Switzerlandstofftrum opposite direction or
- the degree of freedom counteracted by a pair of traction means may in particular be a degree of freedom of movement, in particular a translational or rotational degree of freedom of an end effector of the instrument, for example the rotation of a scalpel, a hook or a jaw of a clamp, scissors, forceps or the like. Accordingly, the output arrangement a
- Output assembly a Instrumentschaftabtriebsan extract and the output or the output members to be coupled to the articulated instrument shaft.
- the degree of freedom is a pivoting degree of freedom of an end effector relative to an instrument shaft on which the end effector is movably supported, or a pivoting degree of freedom of an instrument shaft portion relative to another instrument shaft part on which the end effector is movable or
- Fig. 1 shows a static equilibrium between a unit input force F A to an input drive member A and a reaction moment MR, which acts as a result of an installation of an end effector 3.1 to a driven member 3.
- Input and output member are coupled via a Wernergate with a first Switzerlandstofftrum 1 and an opposite second Switzerlandstofftrum 2, which are each biased by a biasing means, so that they in the unaktu faced state a
- reaction torque M R results from the static torque equilibrium with these two cutting forces F ⁇ F 2 and the lever arm r to:
- Preload F v is required. Since the bias in particular the traction means, but also bearing loads and difficult to impose, can by a
- the tensile stiffness of the first Werstofftrums is always greater than the tensile stiffness of the second Werstofftrums. It is understood that the tensile stiffness refers to normal operating conditions. Accordingly, in one embodiment, the tensile stiffness of the first Werstofftrums at least for temperatures greater than the tensile stiffness of the second Werstofftrums, which are between 10 ° C and 40 ° C.
- the tensile stiffness of the first Wermittetrums advantageously at least 10%, in particular at least 25% and preferably at least 50% greater than the tensile stiffness of the second Wermittetrums.
- the tensile stiffness of a Switzerlandstofftrums depends in particular on its material, in particular of its elasticity coefficient or modulus of elasticity.
- the tensile stiffness of a Werbachtrums depends in particular on its geometry, in particular of its cross-sectional area. Accordingly, in one embodiment, the first Werstofftrum geometry, in particular by cross-section, a greater tensile stiffness than the second Werstofftrum. In particular, the first Werstofftrum over its entire length or at least one
- the first and / or second Switzerlandstofftrum can each be single or multi-stranded. Accordingly, the first
- the first Switzerlandstofftrum has a minimum cross-sectional area which is at least 10%, in particular at least 25% and preferably at least 50% greater than a minimum cross-sectional area of the second Werstofftrums.
- the two preceding aspects can be combined with each other.
- the first Buchstofftrum continuous or at least partially a material having a greater modulus of elasticity and a larger cross-sectional area, in particular strand number, have as the second Werstofftrum.
- the Switzerlandstofftrume are continuously made of the same material and have a constant cross section.
- the first and / or Wertrum may also have sections of different materials and / or geometries. Mechanically, this corresponds to a series connection of springs or tensile stiffnesses. Accordingly, by at least one portion with a locally higher tensile stiffness, in particular from a material having a locally larger modulus of elasticity and / or a locally larger cross-sectional area, the tensile stiffness of the first Werbachtrums increased and / or by at least one portion with a locally smaller tensile stiffness, in particular a material with a locally smaller elastic modulus and / or a locally smaller one
- the applicable torque or the applicable force can be increased at the same pretensioning or the required preload can be reduced.
- Many opposing Buchstoffschreibe have a main working direction in which larger forces or moments are to be transmitted as in the opposite direction. For example, regularly larger forces or moments are required for closing jaws of pliers, shears, clamps or the like as to their opening. Similarly, larger forces or moments are regularly required for advancing a blade, in particular a scalpel, in the direction of its cutting edge or for cutting than for lifting or loosening. Accordingly, in one embodiment, the first Switzerlandstofftrum having the greater tensile stiffness, for actuating the degree of freedom in one
- Main working direction in particular for closing or cutting, set up.
- a main working direction is understood in particular to be the direction in which the larger forces or moments are (are) to be impressed during operation.
- the main working directions of two Werbachschreiben, the first Werstofftrum each having a greater tensile stiffness, in opposite directions, as is the case in particular with two jaws of a pair of pliers, scissors, clamp or the like.
- the Buchstofffind is biased. This is in one Execution of a biasing means for jointly biasing the first and second Weritztrums one or more Buchstoffschreibe provided.
- a biasing means or a part of a multi-part biasing means may comprise in one embodiment, one or more mechanical, hydraulic, pneumatic, magnetic and / or electromagnetic springs, wherein a (electro) magnetic spring in the sense of the present
- the Invention has two each other (electro) magnetically repelling or attracting elements.
- the biasing means is adjustable or adjustable
- a surgical instrument can be actuated manually.
- a, in particular robotically guided, surgical instrument it additionally or alternatively has an actuator arrangement with one or more
- An actuator may in particular comprise one or more electric motors.
- An actuator is in each case operatively connected to one or more input members of a drive arrangement of a Switzerlandstoffschreibes, in particular
- the transmission can in particular a
- an instrument according to the invention is particularly suitable for minimally invasive surgery. Accordingly, in one embodiment it has an instrument shaft in which the one or more pairs of traction means are arranged, and for insertion through a natural or minimally invasive body opening,
- the instrument may, in particular, be an endoscopic instrument having an end effector for insertion into a body and an opposing extracorporeal actuator assembly.
- an instrument according to the invention is particularly suitable for minimally invasive robotic surgery. Accordingly, in one embodiment it has an interface for connection to a robot.
- the interface may in particular be arranged on the instrument shaft and / or an actuator arrangement.
- the interface has a mechanical and / or magnetic, in particular electromagnetic, coupling for coupling to a robot, and / or an interface for transmitting signals, electrical energy and / or fluids, in particular gases and / or liquids, between the robot and the instrument.
- a tensile stiffness of the first Werstofftrums one or more biased Werstoffpointe is designed to be greater than a tensile stiffness of the second Werstofftrums the respective Werstoffcrues, in particular by appropriate specification of a material and / or a
- Present invention is a tensile stress increase in the first Werstofftrum one or more pre-tensioned Werenbergpointe due to an actuation of the input arrangement of this Buchstoffschreibes due to the larger
- FIG. 1 a part of a surgical instrument according to an embodiment of the present invention
- FIG. 2 shows a part of a surgical instrument after another
- Fig. 1 shows a part of a surgical instrument according to an embodiment of the present invention. It has a Eintriebsan extract with a Eintriebsglied in the form of a rotatably mounted rocker A and a End monoorabtriebsan extract with a driven member in the form of another rotatably mounted rocker 3, to which an end effector 3.1 is attached.
- Input and output member are coupled by a biased Buchstoffschreib with a first Switzerlandstofftrum 1 and an opposite second Switzerlandstofftrum 2. Due to the bias, biasing forces F v act on Eulerian cutters.
- FIG. 1 shows a static equilibrium under the influence of an input force F A which is exerted on the input member A by an actuator (not shown). This seeks to turn the end effector 3.1 clockwise. However, since this is in an environment, such as a lumen in the body, rests, the end effector can not move, it acts on the reaction torque M R.
- the first Switzerlandstofftrum 1 has geometry, in particular by cross-section, a greater tensile stiffness e, as the second Switzerlandstofftrum 2, as indicated in Fig. 1 by different line thicknesses of the first and second Switzerlandstofftrums.
- the material of which the first Switzerlandstofftrum consists have a greater modulus of elasticity than the material of which the second Switzerlandstofftrum consists.
- M R , ma x (Ci / c 2 + 1) ⁇ F v ⁇ r
- the tensile stiffness c is, for example, the quotient of a test tensile force F and a change in length of the respective traction mechanism strand caused thereby.
- FIG. 2 shows in Fig. 1 corresponding representation of a part of a surgical
- Apostrophe (', ") differentiated reference numerals are designated, so that reference is made to the above description and will be discussed below only for differences from the embodiment of FIG.
- the surgical instrument of Fig. 2 has two biased Switzerland Bachstoffpase (1 ', 2'), (', 2 "), each with a first Switzerlandstofftrum 1' and 1" and an opposite second Switzerlandstofftrum 2 'or 2 "for opposing actuation of two degrees of freedom of an end effector in the form of a clamp with two jaws 3.1 ', 3.1 ", which clamp between them a lumen and thereby experience reaction moments M R ' and M R ".
- the Switzerlandstoffschreibe are arranged in a common instrument shaft 4.2, the end effector side half (bottom in Fig. 2) by a natural or
- a drive assembly with two actuators synchronized in terms of control technology in the form of electric motors (not shown) arranged in a housing 4.1, wherein the instrument is coupled by means of an interface to a robot and the electric motors with input members A ',
- the Switzerlandstofftrume are biased separately by a multi-part biasing means with springs V1 ', V2', V1" and V2 ".
- the input and output members ⁇ ', A ", 3' and 3" are formed in the embodiment of Fig. 2 as traction sheaves, which in each case partially from the Switzerlandstoffschreiben
- the closing directions of the jaws 3.1 ', 3.1' ' form the main working directions of the corresponding pair of traction means, corresponding to their first traction means 1', 1 '' for actuating the degrees of freedom of the clamping jaws 3.1 ', 3.1' 'in main working directions, in particular for closing set up.
- V1 ", V2 'biasing means (part)
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Veterinary Medicine (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Robotics (AREA)
- Manipulator (AREA)
- Surgical Instruments (AREA)
- Hematology (AREA)
- Anesthesiology (AREA)
- Pulmonology (AREA)
- Biophysics (AREA)
- Mechanical Engineering (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013012802.1A DE102013012802A1 (de) | 2013-08-01 | 2013-08-01 | Chirurgisches Instrument |
| PCT/EP2014/001908 WO2015014445A1 (de) | 2013-08-01 | 2014-07-11 | Chirurgisches instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3027137A1 true EP3027137A1 (de) | 2016-06-08 |
Family
ID=51211724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP14741523.6A Ceased EP3027137A1 (de) | 2013-08-01 | 2014-07-11 | Chirurgisches instrument |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20160166340A1 (de) |
| EP (1) | EP3027137A1 (de) |
| KR (1) | KR101778476B1 (de) |
| CN (1) | CN105431105A (de) |
| DE (1) | DE102013012802A1 (de) |
| WO (1) | WO2015014445A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015101018A1 (de) * | 2015-01-23 | 2016-07-28 | MAQUET GmbH | Vorrichtung zum Halten und Bewegen eines Laparoskops während einer Operation |
| US11633249B2 (en) * | 2017-02-10 | 2023-04-25 | Intuitive Surgical Operations, Inc. | Assembly process for tensioning elements and related systems |
| CN114938937B (zh) * | 2022-05-18 | 2024-03-08 | 湖南省华芯医疗器械有限公司 | 一种牵引绳预紧结构、内窥镜手柄及内窥镜 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60196459A (ja) * | 1984-03-21 | 1985-10-04 | Toshiba Corp | 動力伝達機構 |
| JP3944108B2 (ja) * | 2003-03-31 | 2007-07-11 | 株式会社東芝 | 医療用マニピュレータの動力伝達機構およびマニピュレータ |
| JP4125311B2 (ja) * | 2005-08-30 | 2008-07-30 | 株式会社東芝 | ロボットおよびマニピュレータ |
| JP5431749B2 (ja) | 2009-03-04 | 2014-03-05 | テルモ株式会社 | 医療用マニピュレータ |
| US8523844B2 (en) * | 2009-10-30 | 2013-09-03 | Covidien Lp | Surgical instrument with tendon preload-and-locking device |
| JP6167041B2 (ja) * | 2010-11-11 | 2017-07-19 | メドロボティクス コーポレイション | 多関節のロボティックプローブのための導入組立体 |
| JP6157258B2 (ja) * | 2013-07-26 | 2017-07-05 | オリンパス株式会社 | マニピュレータ及びマニピュレータシステム |
-
2013
- 2013-08-01 DE DE102013012802.1A patent/DE102013012802A1/de not_active Withdrawn
-
2014
- 2014-07-11 EP EP14741523.6A patent/EP3027137A1/de not_active Ceased
- 2014-07-11 CN CN201480043370.1A patent/CN105431105A/zh active Pending
- 2014-07-11 US US14/908,658 patent/US20160166340A1/en not_active Abandoned
- 2014-07-11 KR KR1020167002726A patent/KR101778476B1/ko not_active Expired - Fee Related
- 2014-07-11 WO PCT/EP2014/001908 patent/WO2015014445A1/de not_active Ceased
Non-Patent Citations (2)
| Title |
|---|
| None * |
| See also references of WO2015014445A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20160027138A (ko) | 2016-03-09 |
| CN105431105A (zh) | 2016-03-23 |
| DE102013012802A1 (de) | 2015-02-05 |
| WO2015014445A1 (de) | 2015-02-05 |
| US20160166340A1 (en) | 2016-06-16 |
| KR101778476B1 (ko) | 2017-09-13 |
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