NL2024233B1 - Method for shaping a position stabilizing body and waterjet surgery system - Google Patents

Method for shaping a position stabilizing body and waterjet surgery system Download PDF

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Publication number
NL2024233B1
NL2024233B1 NL2024233A NL2024233A NL2024233B1 NL 2024233 B1 NL2024233 B1 NL 2024233B1 NL 2024233 A NL2024233 A NL 2024233A NL 2024233 A NL2024233 A NL 2024233A NL 2024233 B1 NL2024233 B1 NL 2024233B1
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NL
Netherlands
Prior art keywords
stabilizing body
surgery system
position stabilizing
nozzle
fixation means
Prior art date
Application number
NL2024233A
Other languages
Dutch (nl)
Inventor
Den Dunnen Steven
Tuijthof Gabrielle
Original Assignee
Univ Delft Tech
Amsterdam Univ Medisch Centrum
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Univ Delft Tech, Amsterdam Univ Medisch Centrum filed Critical Univ Delft Tech
Priority to NL2024233A priority Critical patent/NL2024233B1/en
Priority to PCT/NL2020/050635 priority patent/WO2021096352A1/en
Application granted granted Critical
Publication of NL2024233B1 publication Critical patent/NL2024233B1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/3203—Fluid jet cutting instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
    • A61B17/025—Joint distractors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/3203—Fluid jet cutting instruments
    • A61B17/32037—Fluid jet cutting instruments for removing obstructions from inner organs or blood vessels, e.g. for atherectomy
    • 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
    • A61B34/10—Computer-aided planning, simulation or modelling of surgical operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y80/00—Products made by additive manufacturing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00526—Methods of manufacturing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00535—Surgical instruments, devices or methods, e.g. tourniquets pneumatically or hydraulically operated
    • A61B2017/00557—Surgical instruments, devices or methods, e.g. tourniquets pneumatically or hydraulically operated inflatable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
    • A61B17/025—Joint distractors
    • A61B2017/0268—Joint distractors for the knee
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B2017/22051—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with an inflatable part, e.g. balloon, for positioning, blocking, or immobilisation
    • A61B2017/22065—Functions of balloons
    • A61B2017/22069—Immobilising; Stabilising
    • 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
    • A61B34/10—Computer-aided planning, simulation or modelling of surgical operations
    • A61B2034/108—Computer aided selection or customisation of medical implants or cutting guides

Abstract

A waterjet surgery system (1) comprising a water pump (3), a fluid line (4) and a nozzle (5), wherein the fluid line (4) connects the water pump (3) to the nozzle (5), wherein the nozzle (5) is embodied within a position stabilizing body (8), and a method for shaping such a position stabilizing body (8) comprising the steps of: — imaging hard tissue (16), particularly bones (10), of a patient (15) on which surgery is to be carried out; and — forming a nozzle within a position stabilizing body (8) by rapid prototyping, wherein the position stabilizing body (8) is shaped to match the shape of the bones (10) of the patient (15) at a position which has to be subjected to sur— gery. The position stabilizing body (8) is provided with fixation means (9) to fix the position of the body (8) in re— lation to an external object (10). The fixation means can be embodied with pins. Alternatively the fixation means (9) can comprise inflation means (11) mounted on the position stabi— lizing body (8). The inflation means (ll) can comprise an in— flatable cushion (12). The fixation means (9) can further comprise a friction coating (13) provided on the position stabi— lizing body (8) and/or on inflation means (11) provided on the position stabilizing body (8). It is also possible that the position stabilizing body (8) is shaped to match the shape of an external object (10) on which it is to be applied.

Description

Method for shaping a position stabilizing body and waterjet surgery system The invention relates to a waterjet surgery system comprising a water pump, a fluid line and a nozzle, wherein the fluid line connects the water pump to the nozzle.
EP 1 589 884 teaches an example of such a waterjet surgery system.
In waterjet surgery of hard tissue, particularly bone, a relatively high water pressure is required to drill or bore into the tissue. This poses a challenge on the position- ing of the nozzle because of the thrust force that results from the waterjet being expelled from the nozzle, which may undesirably move the nozzle from its intended position. It is however a requirement in waterjet surgery to keep the nozzle stationary so as not to compromise the patient’s safety and to maintain a high level of accuracy during execution of the waterjet surgery.
The invention is aimed at providing a solution for the above pictured problem. According to the invention the so- lution is promoted by applying one or more of the appended claims.
Essentially the invention provides that the nozzle is embodied within a position stabilizing body, such as a disc.
There are different embodiments for the position sta- bilizing body of the invention, which each can be applied in- dependently from the other, or in combination.
The position stabilizing body of the invention can in one embodiment be provided with fixation means to fix the po- sition of the body in relation to an external object.
In another embodiment the position stabilizing body of the invention can have fixation means which are embodied as pins.
In still another embodiment the fixation means com- prise inflation means mounted on the position stabilizing body.
Suitably the inflation means are embodied as an in- flatable cushion.
In still another embodiment the fixation means com- prise a friction coating provided on the position stabilizing body. The friction coating can also be provided on the infla- tion means, notably on the cushion. With such a friction coat- ing it is possible to either increase or to lower the fric- tion, depending on the circumstances.
In still a further embodiment the position stabiliz- ing body is shaped to match the shape of an external object on which the body with the nozzle is to be applied.
In connection with the embodiment of the body as used according to the previous paragraph, the invention is also em- bodied in a method for shaping a position stabilizing body for use in a waterjet surgery system according to the invention, comprising the steps of: — imaging hard tissue, particularly bones, of a pa- tient on which surgery is to be carried out; and - forming a nozzle within a position stabilizing body by rapid prototyping, wherein the position stabilizing body is shaped to match the shape of the bones of the patient at a po- sition which has to be subjected to surgery. With the term ‘rapid prototyping’ as used herein, reference is made for in- stance to additive manufacturing.
The invention will hereinafter be further elucidated with reference to the drawing of an exemplary embodiment of a waterjet surgery system according to the invention that is not limiting as to the appended claims.
In the drawing: -figure 1 shows a waterjet surgery system wherein the position stabilizing body with the nozzle according to the in- vention can be applied; -figures 2A/2B show one embodiment of the position stabilizing body which can be used in the waterjet surgery system of the invention; -figure 3 shows an example of using the position sta- bilizing body with the nozzle of the invention; -figure 4 pictures the method for shaping a position stabilizing body with a nozzle according to the invention; and
-figure 5 shows an example of using the position sta- bilizing body manufactured according to the method depicted in figure 4.
Whenever in the figures the same reference numerals are applied, these numerals refer to the same parts.
Making first reference to figure 1 a waterjet surgery system 1 is shown which comprises a source of water 2, a cyl- inder piston pump 3, and a fluid line 4 with a jet nozzle 5 which can be directed to an object which is to be cut or drilled. It is remarked that whenever in this application wa- ter is mentioned, it is not intended to refer to pure water, but to water which is suitable for medical applications and which accordingly comprises a saline solution derived from a storage 2.
The cylinder piston pump 3 with a piston 6 and a spring 7 that loads the piston 6 is only shown as an example of a possible embodiment of a pump. Other arrangements are al- so feasible.
The invention comes into play where it concerns the implementation of the nozzle 5.
Figures ZA and 2B show an embodiment of a position stabilizing body 8, which features the nozzle (not shown), usually located at the underside 8’ of the body 8. The posi- tion stabilizing body 8, in this example a disc, is provided with fixation means 9 to fix the position of the body 8 in re- lation to an external object such as is shown in figure 3 with reference to a bone structure 10. In the shown embodiment the fixation means 9 are inflation means 11, preferably an inflat- able cushion 12, mounted on the position stabilizing body 8.
This is however not the only option. It is for instance also possible to provide the position stabilizing body 8 with out- wardly projecting pins. This is not shown in the drawing of the figures, but how this can be implemented is entirely clear for the skilled person and it is therefore superfluous to show same in the drawing of the figures.
Figure 2A shows the position stabilizing body 8 wherein the inflatable cushion 12 is not yet inflated, whereas figure 2B shows the position stabilizing body 8 wherein infla- tion of the inflatable cushion 12 is completed. Accordingly when arrived at a partly or fully inflated situation as show in figure 2B it is possible to fix the position of the posi- tion stabilizing body 8 when in use as is depicted in figure
3.
It is further possible to apply a friction coating 13 on the position stabilizing body 8. Such a friction coating can also be applied on the inflatable cushion 12, or in gen- eral on the inflation means 11, as depicted with reference 14.
In figure 4 a method is depicted for manufacturing and shaping a position stabilizing body 8 for use in a water- jet surgery system 1 as shown in figure 1. In this method first hard tissue 16 representing a bone structure 10 of a pa- tient 15 is being imaged, as is shown in figure 4A and 4B. Thereafter a position stabilizing body 8 with a nozzle is formed by rapid prototyping as depicted in figure 4C, wherein the position stabilizing body 8 is shaped to match the shape of the bones 10 of the patient 15 at a position which has to be subjected to surgery. The eventual position stabilizing body 8 to be used is shown in figure 4D and in figure 5 same is shown in actual use. Figure 4D further images a waterjet stream 17, indicating the position of the nozzle (not shown) at the underside 8’ of the position stabilizing body 8.
Although the invention has been discussed in the foregoing with reference to an exemplary embodiment of the po- sition stabilizing body and an exemplary method for manufac- turing such a position stabilizing body, the invention is not restricted to these particular embodiments which can be varied in many ways without departing from the invention. The body used exemplary embodiments shall therefore not be used to con- strue the appended claims strictly in accordance therewith. On the contrary the embodiments are merely intended to explain the wording of the appended claims without intent to limit the claims to these exemplary embodiments. The scope of protection of the invention shall therefore be construed in accordance with the appended claims only, wherein a possible ambiguity in the wording of the claims shall be resolved using these exem- plary embodiments.
Aspects of the invention are itemized in the follow- ing section.
1. A waterjet surgery system (1) comprising a water pump (3), a fluid line (4) and a nozzle (5), wherein the fluid line 5 (4) connects the water pump (3) to the nozzle (5), charac- terized in that the nozzle (5) is embodied within a posi- tion stabilizing body (8).
2. Waterjet surgery system according to claim 1, character- ized in that the position stabilizing body (8) is provided with fixation means (9) to fix the position of the body (8) in relation to an external object (10).
3. Waterjet surgery system according to claim 1 or 2, charac- terized in that the fixation means are embodied with pins.
4. Waterjet surgery system according to any one of claims 1 - 3, characterized in that the fixation means (9) comprise inflation means (11) mounted on the position stabilizing body (8).
5. Waterjet surgery system according to claim 4, character- ized in that the inflation means (11) comprise an inflata- ble cushion (12).
6. Waterjet surgery system according to any one of claims 1 - 5, characterized in that the fixation means (9) comprise a friction coating (13) provided on the position stabilizing body (8) and/or on inflation means (11) provided on the position stabilizing body (8).
7. Waterjet surgery system according to any one of claims 1 - 6, characterized in that the position stabilizing body (8) is shaped to match the shape of an external object (10) on which it is to be applied.
8. Method for shaping a position stabilizing body (8) for use in a waterjet surgery system (1) according to any one oth- er claims 1 - 7, characterized by the steps of: - imaging hard tissue (16), particularly bones (10), of a patient (15) on which surgery is to be carried out; and - forming a nozzle within a position stabilizing body (8) by rapid prototyping, wherein the position stabilizing body (8) is shaped to match the shape of the bones (10) of the patient (15) at a position which has to be sub- jected to surgery.

Claims (8)

CONCLUSIESCONCLUSIONS 1. Waterstraalchirurgiesysteem (1) omvattende een wa- terpomp (3), een vloeistofleiding (4) en een mondstuk (5), waarbij de vloeistofleiding (4) de waterpomp (3) verbindt met het mondstuk (5), met het kenmerk, dat het mondstuk (5) is op- genomen in een positie-stabiliserend lichaam (8).A water jet surgery system (1) comprising a water pump (3), a liquid conduit (4) and a mouthpiece (5), the liquid conduit (4) connecting the water pump (3) to the mouthpiece (5), characterized in, in that the mouthpiece (5) is accommodated in a position-stabilizing body (8). 2. Waterstraalchirurgiesysteem volgens conclusie 1, met het kenmerk, dat het positie-stabiliserende lichaam (8) is voorzien van fixatiemiddelen (9) om de positie van het lichaam (8) ten opzichte van een extern object (10) te fixeren,Waterjet surgery system according to claim 1, characterized in that the position-stabilizing body (8) is provided with fixation means (9) for fixing the position of the body (8) relative to an external object (10), 3. Waterstraalchirurgiesysteem volgens conclusie 1 of 2, met het kenmerk, dat de fixatiemiddelen zijn uitgerust met pennen.A water jet surgery system according to claim 1 or 2, characterized in that the fixation means are provided with pins. 4, Waterstraalchirurgiesysteem volgens één van de conclusies 1 - 3, met het kenmerk, dat de fixatiemiddelen (9) opblaasmiddelen (11) omvatten die zijn gemonteerd op het posi- tie-stabiliserende lichaam (8).Waterjet surgery system according to any one of claims 1 to 3, characterized in that the fixation means (9) comprise inflation means (11) mounted on the position-stabilizing body (8). 5. Waterstraalchirurgiesysteem volgens conclusie 4, met het kenmerk, dat de opblaasmiddelen (11) een opblaasbaar kussen (12) omvatten.A water jet surgery system according to claim 4, characterized in that the inflation means (11) comprise an inflatable cushion (12). 6. Waterstraalchirurgiesysteem volgens één van de conclusies 1-5, met het kenmerk, dat de fixatiemiddelen (9) een wrijvingscoating (13) omvatten die is aangebracht op het positie-stabiliserende lichaam (8) en / of opblaasmiddelen {11) aangebracht op het positie-stabiliserende lichaam (8).Water jet surgery system according to any one of claims 1-5, characterized in that the fixation means (9) comprise a friction coating (13) applied to the position-stabilizing body (8) and/or inflation means {11) applied to the position-stabilizing body (8). 7. Waterstraalchirurgiesysteem volgens één van de conclusies 1 - 6, met het kenmerk, dat het positie-stabili- serende lichaam (8) in vorm is afgestemd op de vorm van een extern object (10) waarop het moet worden aangebracht.A water jet surgical system according to any one of claims 1 to 6, characterized in that the position-stabilizing body (8) is adapted in shape to the shape of an external object (10) on which it is to be applied. 8. Werkwijze voor het vormen van een positie- stabiliserend lichaam (8) voor gebruik in een waterstraalchi- rurgiesysteem (1) volgens een van de andere conclusies 1-7, gekenmerkt door de stappen: — beeldvorming van hard weefsel (16), in het bijzonder botten (10), van een patiënt (15) waarop een operatie moet worden uitgevoerd; en — het vormen van een mondstuk in een positie-stabiliserend lichaam (8) door snelle prototyping, waarbij het positie- stabiliserende lichaam (8) een vorm wordt gegeven die afge-A method of forming a position-stabilizing body (8) for use in a water jet surgery system (1) according to any one of claims 1 to 7, characterized by the steps: — imaging of hard tissue (16), in in particular bones (10), of a patient (15) to be operated on; and — forming a nozzle in a position-stabilizing body (8) by rapid prototyping, wherein the position-stabilizing body (8) is given a shape that stemd is op de vorm van de botten (10) van de patiënt (15) op een positie die moet worden onderworpen aan een opera- tie.conformed to the shape of the bones (10) of the patient (15) at a position to be subjected to surgery.
NL2024233A 2019-11-14 2019-11-14 Method for shaping a position stabilizing body and waterjet surgery system NL2024233B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL2024233A NL2024233B1 (en) 2019-11-14 2019-11-14 Method for shaping a position stabilizing body and waterjet surgery system
PCT/NL2020/050635 WO2021096352A1 (en) 2019-11-14 2020-10-15 Method for shaping a position stabilizing body and waterjet surgery system

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Application Number Priority Date Filing Date Title
NL2024233A NL2024233B1 (en) 2019-11-14 2019-11-14 Method for shaping a position stabilizing body and waterjet surgery system

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NL2024233B1 true NL2024233B1 (en) 2021-07-29

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5135482A (en) * 1985-12-31 1992-08-04 Arnold Neracher Hydrodynamic device for the elimination of an organic deposit obstructing a vessel of a human body
NL1016653C2 (en) * 2000-11-20 2002-05-22 Hendrik Glastra Surgical method for removing obstructions in blood vessel, comprises fixing distal end of catheter in relation to vessel wall prior to carrying out removal work
EP1589884A2 (en) 2003-01-31 2005-11-02 Hydrocision Inc. Nozzle assemblies for liquid jet surgical instruments and surgical instruments employing the nozzle assemblies
WO2018231983A1 (en) * 2017-06-13 2018-12-20 Board Of Regents Of The University Of Nebraska Surgical devices and methods
WO2019056248A1 (en) * 2017-09-21 2019-03-28 Zimmer, Inc. Waterjet cutting system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010148125A1 (en) * 2009-06-18 2010-12-23 The Foundry, Llc Microfracture device and method
EP2819599B1 (en) * 2012-02-29 2018-05-23 Procept Biorobotics Corporation Automated image-guided tissue resection and treatment
US9060786B2 (en) 2013-08-15 2015-06-23 Biomet Manufacturing, Llc X-ray based cut block positioning jig

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5135482A (en) * 1985-12-31 1992-08-04 Arnold Neracher Hydrodynamic device for the elimination of an organic deposit obstructing a vessel of a human body
NL1016653C2 (en) * 2000-11-20 2002-05-22 Hendrik Glastra Surgical method for removing obstructions in blood vessel, comprises fixing distal end of catheter in relation to vessel wall prior to carrying out removal work
EP1589884A2 (en) 2003-01-31 2005-11-02 Hydrocision Inc. Nozzle assemblies for liquid jet surgical instruments and surgical instruments employing the nozzle assemblies
WO2018231983A1 (en) * 2017-06-13 2018-12-20 Board Of Regents Of The University Of Nebraska Surgical devices and methods
WO2019056248A1 (en) * 2017-09-21 2019-03-28 Zimmer, Inc. Waterjet cutting system

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