SI26313A - Scalpel for eye surgery with protection - Google Patents

Scalpel for eye surgery with protection Download PDF

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Publication number
SI26313A
SI26313A SI202200022A SI202200022A SI26313A SI 26313 A SI26313 A SI 26313A SI 202200022 A SI202200022 A SI 202200022A SI 202200022 A SI202200022 A SI 202200022A SI 26313 A SI26313 A SI 26313A
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SI
Slovenia
Prior art keywords
scalpel
housing
protection
eye surgery
protection according
Prior art date
Application number
SI202200022A
Other languages
Slovenian (sl)
Inventor
Emil Martinšek
Branko Ramšak
Luka Martinšek
Nejc Ramšak
Original Assignee
RaMax Engineering, d.o.o.
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.)
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Publication date
Application filed by RaMax Engineering, d.o.o. filed Critical RaMax Engineering, d.o.o.
Priority to SI202200022A priority Critical patent/SI26313A/en
Priority to PCT/SI2022/050005 priority patent/WO2023158389A1/en
Publication of SI26313A publication Critical patent/SI26313A/en

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    • 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
    • A61B17/3209—Incision instruments
    • A61B17/3211—Surgical scalpels, knives; Accessories therefor
    • 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
    • A61B17/3209—Incision instruments
    • A61B17/3211—Surgical scalpels, knives; Accessories therefor
    • A61B2017/32113—Surgical scalpels, knives; Accessories therefor with extendable or retractable guard or blade

Abstract

Predmet izuma je skalpel za operacijo očesa z zaščito (1), ki rešuje tehnične probleme: preprečitve nevarnosti poškodbe uporabnika, preprečitve neustrezne uporabe in zagotovitve zaščite rezila noža skalpela (4) pred poškodbami in krhanjem. Skalpel za operacijo očesa z zaščito (1), zaobsega vsaj zaščito skalpela (2), mehanizem odpiranja in zapiranja skalpela (3), nož skalpela (4), zgornje ohišje skalpela (5), spodnje ohišje skalpela (6) in vzmet (7). Ko je skalpel za operacijo očesa z zaščito (1) v zaprtem položaju, s pritiskom na gumb za odpiranje in zapiranje zaščite skalpela (2), vzmet (7) potisne mehanizem odpiranja in zapiranja skalpela (3) nazaj, dokler se trn ne zatakne v luknjo na zgornjem ohišju skalpela (5), zaščita skalpela (2) pa se pomakne v odprt položaj. Ko je skalpel za operacijo očesa z zaščito (1) v odprtem položaju, se s pritiskom na mehanizem odpiranja in zapiranja skalpela (3), zaščita skalpela (2) potisne v zaprt položaj.The object of the invention is a scalpel for eye surgery with protection (1), which solves the technical problems of preventing the risk of injury to the user, preventing improper use and ensuring the protection of the blade of the scalpel knife (4) against damage and breakage. Scalpel for eye surgery with guard (1), includes at least a scalpel guard (2), a scalpel opening and closing mechanism (3), a scalpel blade (4), an upper scalpel housing (5), a lower scalpel housing (6) and a spring (7) ). When the ophthalmic scalpel with guard (1) is in the closed position, by pressing the scalpel guard opening and closing button (2), the spring (7) pushes the scalpel opening and closing mechanism (3) back until the mandrel engages in the hole on the upper scalpel housing (5), and the scalpel guard (2) moves to the open position. When the eye surgery scalpel with guard (1) is in the open position, by pressing the scalpel opening and closing mechanism (3), the scalpel guard (2) is pushed to the closed position.

Description

SKALPEL ZA OPERACIJO OČESA Z ZAŠČITOSCALPEL FOR EYE SURGERY WITH PROTECTION

OPIS IZUMADESCRIPTION OF THE INVENTION

Področje tehnikeThe field of technology

Skalpel; skalpel za operacijo očesa; skalpel za operacijo očesa z zaščito; zaščita skalpela; mehanizem odpiranja in zapiranja skalpelaScalpel; scalpel for eye surgery; scalpel for eye surgery with protection; scalpel protection; scalpel opening and closing mechanism

Prikaz problemaDisplay the problem

V literaturi in na tržišču je najti različne oblike skalpelov za operacije oči, pri čemer imajo vse znane vrste skalpelov za operacijo oči določene pomanjkljivosti glede varnosti in same uporabe. Večina skalpelov za operacijo oči je popolnoma nezaščitenih v področju noža skalpela, s čimer obstaja možnost poškodb, tako oseb, kot tudi rezila noža skalpela.Various types of scalpels for eye surgery can be found in the literature and on the market, and all known types of scalpels for eye surgery have certain drawbacks in terms of safety and use. Most scalpels for eye surgery are completely unprotected in the area of the scalpel blade, with the potential for injury to both the person and the scalpel blade.

Opisan skalpel za operacijo oči z zaščito, omogoča veliko stopno varnosti in veliko uporabno vrednost. V stanju neuporabe skalpel za operacijo oči z zaščito, omogoča popolno fizično zaščito noža skalpela, s čimer se prepreči nevarnost poškodb oseb, neustrezna uporaba in zagotovi zaščita samega rezila noža skalpela pred poškodbami in krhanjem. Za uporabnika, namreč očesnega kirurga, pa omogoča predmet izuma enostavnejšo in varnejšo uporabo.The described scalpel for eye surgery with protection provides a high level of safety and great utility value. When not in use, the scalpel for eye surgery with a guard provides complete physical protection of the scalpel blade, thereby preventing the risk of personal injury, improper use and ensuring the protection of the scalpel blade itself from damage and breakage. For the user, namely the eye surgeon, the object of the invention enables simpler and safer use.

Stanje tehnikeState of the art

Večina skalpelov za operacijo oči, ki jih je najti na tržišču, nima fizične zaščite noža skalpela. Pri skalpelih, ki imajo zaščiten nož skalpela, pa je zaščita izvedena v obliki kapice, ki se natakne na skalpel ali pa je skalpel shranjen v etuiju, pri čemer so nekateri etuiji izvedeni tako, da se skalpel v etui oblikovno pritrdi in se na ta način ne giba prosto po etuiju.Most scalpels for eye surgery available on the market do not have a physical shield on the scalpel blade. In the case of scalpels that have a protected scalpel blade, the protection is implemented in the form of a cap that is put on the scalpel or the scalpel is stored in a case, whereby some cases are designed in such a way that the scalpel is fixed in the case and in this way it does not move freely in the case.

Opis nove rešitveDescription of the new solution

Predmet izuma je skalpel za operacijo očesa z zaščito, ki rešuje tehnične probleme: preprečitve nevarnosti poškodbe uporabnika, preprečitve neustrezne uporaba in zagotovitve zaščite rezila noža skalpela pred poškodbami in krhanjem.The object of the invention is a scalpel for eye surgery with protection that solves technical problems: preventing the risk of injury to the user, preventing improper use and ensuring the protection of the blade of the scalpel knife against damage and breakage.

Skalpel za operacijo očesa z zaščito, zaobsega vsaj zaščito skalpela, mehanizem odpiranja in zapiranja skalpela, nož skalpela, zgornje ohišje skalpela, spodnje ohišje skalpela in vzmet.A scalpel for eye surgery with a guard includes at least a scalpel guard, a scalpel opening and closing mechanism, a scalpel blade, an upper scalpel housing, a lower scalpel housing, and a spring.

Skalpel za operacijo očesa z zaščito je sestavljen tako, da je nož skalpela vstavljen v ohišje skalpela, prednostno v spodnje ohišje skalpela s postopkom toplega vstavljanja. Del ohišja skalpela v katerega se vstavi nož skalpela se segreje na višjo temperatura, ki zagotavlja plastično deformacijo materiala ohišja skalpela. Nož skalpela se mehansko potisne v ustrezen segret del ohišja skalpela, pri čemer se ohišje skalpela plastično deformira. Po ohladitvi dela ohišja skalpela v katerega se vstavi nož skalpela, sta ohišje skalpela in nož skalpela nerazstavljivo spojena.A scalpel for eye surgery with a guard is assembled in such a way that the scalpel blade is inserted into the scalpel housing, preferably into the lower scalpel housing by a warm insertion process. The part of the scalpel housing into which the scalpel knife is inserted is heated to a higher temperature, which ensures plastic deformation of the material of the scalpel housing. The scalpel blade is mechanically pushed into the corresponding heated part of the scalpel housing, plastically deforming the scalpel housing. After cooling the part of the scalpel housing into which the scalpel blade is inserted, the scalpel housing and the scalpel blade are indissolubly joined.

V naslednjem koraku sestave skalpela se tudi ostali sestavni deli skalpela za operacijo očesa z zaščito vstavijo v ohišje skalpela, prednostno v spodnje ohišje skalpela. Zaščita skalpela, vzmet in mehanizem odpiranja in zapiranja skalpela se vstavi v ohišje skalpela, prednostno spodnje ohišje skalpela.In the next step of assembling the scalpel, the other components of the scalpel for eye surgery are also inserted with protection into the scalpel housing, preferably into the lower scalpel housing. The scalpel guard, spring and scalpel opening and closing mechanism are inserted into the scalpel housing, preferably the lower scalpel housing.

Spodnje ohišje skalpela in zgornje ohišje skalpela se postavita en na drugega v ustrezno lego in se trajno medsebojno povežeta s kakršnimkoli načinom spajanja, prednostno pa se navedena sestavna dela medsebojno spojita s ultrazvočnim valjenjem, pri čemer so hkrati sestavni deli skalpela za operacijo očesa z zaščito že vstavljeni v skalpel za operacijo očesa z zaščito.The lower scalpel body and the upper scalpel body are placed on top of each other in a suitable position and are permanently connected to each other by any joining method, and preferably the said components are connected to each other by ultrasonic rolling, while at the same time the components of the eye surgery scalpel with protection are already inserted into the scalpel for eye surgery with protection.

Prav tako je sama uporaba med operacijami takšna, da se skalpeli lahko v vsakem trenutku postavijo v funkcijo popolne zaščite in to samo z enostavnim pritiskom na mehanizem. Ponovna uporaba pa s pritiskom na gumb za aktivacijo.Also, the use itself during operations is such that the scalpels can be put into full protection function at any time, just by simply pressing the mechanism. Reuse by pressing the activation button.

Spodnje ohišje skalpela in zgornje ohišje skalpela, sta izvedena iz togega, toplotno deformabilnega materiala, prednostno iz plastičnega materiala, pri čemer sta oba dela predpripravljena za medsebojno spajanje, prednostno za spajanje v nerazstavljivo zvezo.The lower body of the scalpel and the upper body of the scalpel are made of rigid, heat-deformable material, preferably of plastic material, and both parts are pre-prepared for joining each other, preferably for joining in an indestructible connection.

Eden od delov ohišja skalpela, namreč spodnje ohišje skalpela ali zgornje ohišje skalpela ima zaobsežen plastični del z luknjo v katerega se mehansko potisne nož skalpela, pri čemer se naveden del ohišja skalpela plastično deformira. Na medsebojnih povezovalnih ploskvah spodnjega ohišja skalpela in zgornjega ohišja skalpela, so prednostno izvedene izboklinice in vdolbinice. Pri sestavi spodnjega ohišja skalpela in zgornjega ohišja skalpela, se izboklinice pozicionirajo v pripadajoče vboklinice, nakar se spodnje ohišje skalpela in zgornjega ohišje skalpela medsebojno spojita, prednostno v nerazstavljivo zvezo.One of the parts of the scalpel housing, namely the lower scalpel housing or the upper scalpel housing, has an extensive plastic part with a hole into which the scalpel knife is mechanically pushed, whereby said part of the scalpel housing is plastically deformed. On the mutual connecting surfaces of the lower scalpel housing and the upper scalpel housing, protrusions and recesses are preferably made. When assembling the lower scalpel housing and the upper scalpel housing, the protrusions are positioned in the corresponding recesses, after which the lower scalpel housing and the upper scalpel housing are connected to each other, preferably in an inseparable connection.

Notranjosti spodnjega ohišja skalpela in zgornjega ohišja skalpela, sta prilagojena za vstavitev zaščite skalpela, vzmeti in mehanizma odpiranja in zapiranja skalpela. V obeh delih ohišja skalpela je oblikovno izvedeno ležišče, kije hkrati omejevalec gibanja za zaščito skalpela.The insides of the lower scalpel housing and the upper scalpel housing are adapted to insert the scalpel protection, the spring and the scalpel opening and closing mechanism. In both parts of the scalpel housing, there is a designed bed, which is also a movement limiter to protect the scalpel.

V enem od delov ohišja skalpela, namreč spodnjega ohišja skalpela ali zgornjega ohišja skalpela sta izvedeni še ustrezni luknji, ki omogočata delovanje mehanizma odpiranja in zapiranja skalpela. Na vsaj enem od delov ohišja skalpela, namreč na spodnjem ohišju skalpela in na zgornjem ohišju skalpela sta na mestu prijema skalpela izvedeni oblikovni dodatki, prednostno v obliki izboklinic, ki zagotavljajo boljši oprijem skalpela za operacijo očesa z zaščito med uporabo in zmanjšujejo možnosti zdrsa skalpela za operacijo očesa z zaščito med njegovo uporabo.In one of the parts of the scalpel housing, namely the lower scalpel housing or the upper scalpel housing, there are also suitable holes that enable the operation of the scalpel opening and closing mechanism. On at least one of the parts of the scalpel housing, namely on the lower scalpel housing and on the upper scalpel housing, there are design accessories at the place where the scalpel is gripped, preferably in the form of protrusions, which ensure a better grip of the scalpel for eye surgery with protection during use and reduce the chances of the scalpel slipping for eye surgery with protection during its use.

Zaščita skalpela je izvedena iz kakršnegakoli togega materiala, prednostno pa je izvedena iz plastičnega materiala. Material zaščite skalpela je prednostno prosojen, kar omogoča, da je nož skalpela vedno viden, kar dodatno zmanjšuje možnost napake pri uporabi skalpela za operacijo očesa z zaščito. Del zaščite skalpela na strani noža skalpela je oblikovan tako, da med nožem skalpela in zaščito skalpela ne pride do medsebojnega stika. Zaščita skalpela je izvedena tako, da ima osnosimetrično gledano del zaščite skalpela na strani noža skalpela večji premer, kot na njegovi drugi strani. Na del z manjšim premerom zaščite skalpela, se namesti vzmet, del zaščite skalpela, kjer se spremeni premer, pa služi kot omejevalec gibanja vzmeti na strani zaščite skalpela.The scalpel guard is made of any rigid material, preferably made of plastic material. The scalpel protection material is preferably transparent, which allows the scalpel blade to always be visible, which further reduces the possibility of error when using a scalpel for eye surgery with protection. The part of the scalpel guard on the side of the scalpel blade is designed in such a way that there is no mutual contact between the scalpel blade and the scalpel guard. The scalpel protection is designed so that, viewed axisymmetrically, the part of the scalpel protection on the side of the scalpel knife has a larger diameter than on its other side. A spring is placed on the part with a smaller diameter of the scalpel guard, and the part of the scalpel guard, where the diameter changes, serves as a limiter of the movement of the spring on the side of the scalpel guard.

Mehanizem odpiranja in zapiranja skalpela je izveden iz togega materiala, prednostno plastičnega materiala. Telo mehanizma odpiranja in zapiranja skalpela je v osnovi izvedeno osnosimetrično v obliki votlega valja. Ena osnovna ploskev valjaste oblike je oblikovana tako, da v svojo notranjost sprejme del zaščite skalpela in krati služi kot omejevalec gibanja vzmeti, druga stran pa je namenjena za odpiranje in zapiranje skalpela za operacijo očesa z zaščito.The mechanism for opening and closing the scalpel is made of rigid material, preferably plastic material. The body of the scalpel opening and closing mechanism is basically axisymmetric in the form of a hollow cylinder. One base surface of the cylindrical shape is designed to receive part of the scalpel protection in its interior and also serves as a limiter of the spring movement, while the other side is intended for opening and closing the scalpel for eye surgery with protection.

Mehanizem odpiranja in zapiranja skalpela ima na obodu votlega valja izveden ozek podolgovat elastičen element, kateremu material iz katerega je izveden mehanizem odpiranja in zapiranja skalpela zagotavlja omejeno elastično gibanje, tako da podolgovat elastičen element deluje kot neke vrste listnata vzmet. Na podolgovatem elastičnem elementu sta izvedena gumb za odpiranje in zapiranje zaščite skalpela in na vrhu podolgovatega elastičnega elementa trn, ki se zatakne v luknjo na ohišju skalpela, ko je skalpel za operacijo očesa z zaščito v odprtem stanju. Na nasprotni strani podolgovatega elastičnega elementa, je izveden omejevalec gibanja podolgovatega elastičnega elementa, ki preprečuje preveliko deformacijo materiala podolgovatega elastičnega elementa in s tem ščiti celoten skalpel za operacijo očesa z zaščito pred poškodbo oziroma pred zlomom podolgovatega elastičnega elementa.The scalpel opening and closing mechanism has a narrow elongated elastic element on the circumference of the hollow cylinder, to which the material from which the scalpel opening and closing mechanism is made provides limited elastic movement, so that the elongated elastic element acts as a kind of leaf spring. A button for opening and closing the scalpel guard is provided on the elongated elastic member, and on the top of the elongated elastic member is a mandrel that is inserted into the hole on the scalpel body when the eye surgery scalpel with the guard is in the open state. On the opposite side of the elongated elastic element, a limiter of the movement of the elongated elastic element is implemented, which prevents excessive deformation of the material of the elongated elastic element and thus protects the entire scalpel for eye surgery by protecting against damage or breakage of the elongated elastic element.

Vzmet je izvedena kot vijačna vzmet in je iz kovinskega materiala. Premer vzmeti je takšen, da se lahko natakne na del zaščite skalpela, na katerem je osnosimetrično gledano manjši premer.The spring is designed as a coil spring and is made of metal material. The diameter of the spring is such that it can be put on the part of the scalpel protection, which has a smaller diameter when viewed axisymmetrically.

Noz skalpela je izveden iz togega, prednostno kovinskega materiala. Nož skalpela je izdelan s postopkom kovanja in naknadnega brušenja rezila. Pozicijo vstavljanja noža skalpela v enega od delov ohišja skalpela zagotavlja posebej pripravljena ploščata oblika, ki se zagotovi v fazi hladnega kovanja pri izdelavi noža skalpela.The scalpel blade is made of a rigid, preferably metal, material. The scalpel knife is made by a process of forging and subsequent grinding of the blade. The position of inserting the scalpel knife into one of the parts of the scalpel housing is ensured by a specially prepared flat shape, which is provided during the cold forging stage of the production of the scalpel knife.

Ko je skalpel za operacijo očesa z zaščito v zaprtem položaju, se s pritiskom na gumb za odpiranje in zapiranje zaščite skalpela, trn na vrhu podolgovatega elastičnega elementa pomakne v notranjost ohišja skalpela. Vzmet potisne celoten mehanizem odpiranja in zapiranja skalpela nazaj, dokler se trn ne zatakne v luknjo na ohišju skalpela. Hkrati se zaščita skalpela pomakne v odprt položaj.When the eye surgical scalpel with guard is in the closed position, by pressing the button to open and close the scalpel guard, the mandrel on the top of the elongated elastic element moves inside the scalpel housing. The spring pushes the entire scalpel opening and closing mechanism back until the mandrel engages the hole in the scalpel housing. At the same time, the scalpel guard moves to the open position.

Ko je skalpel za operacijo očesa z zaščito v odprtem položaju, se s pritiskom na mehanizem odpiranja in zapiranja skalpela trn izmakne iz luknje na ohišju skalpela. Gumb za odpiranje in zapiranje zaščite skalpela, na podolgovatem elastičnem elementu se pomakne do skrajne lege luknje na ohišju skalpela. Hkrati se stisne vzmet, ki potisne zaščito skalpela v zaprt položaj.When the ophthalmic scalpel with guard is in the open position, pressing the scalpel opening and closing mechanism pulls the mandrel out of the hole in the scalpel housing. The button for opening and closing the scalpel protection, on the elongated elastic element, moves to the extreme position of the hole on the scalpel housing. At the same time, the spring is compressed, pushing the scalpel guard into the closed position.

Podrobneje je bistvo izuma pojasnjeno v nadaljevanju z opisom izvedbenega primera in priloženih skic, pri čemer so skice del pričujoče patentne prijave in je na skicah prikazano.·The essence of the invention is explained in more detail below with a description of the implementation example and the attached sketches, whereby the sketches are part of the present patent application and are shown in the sketches.·

Slika 1 prikazuje skalpel za operacijo očesa z zaščito 1, zaščita skalpela 2, mehanizem odpiranja in zapiranja skalpela 3, nož skalpela 4, zgornje ohišje skalpela 5.Figure 1 shows an eye surgery scalpel with guard 1, scalpel guard 2, scalpel opening and closing mechanism 3, scalpel knife 4, scalpel upper body 5.

Slika 2 prikazuje skalpel za operacijo očesa z zaščito 1, zaščita skalpela 2, mehanizem odpiranja in zapiranja skalpela 3, zgornje ohišje skalpela 5.Figure 2 shows an eye surgery scalpel with guard 1, scalpel guard 2, scalpel opening and closing mechanism 3, scalpel upper body 5.

Slika 3 prikazuje zaščita skalpela 2, mehanizem odpiranja in zapiranja skalpela 3, nož skalpela 4, zgornje ohišje skalpela 5, spodnje ohišje skalpela 6, vzmet 7.Figure 3 shows the scalpel guard 2, the scalpel opening and closing mechanism 3, the scalpel blade 4, the upper scalpel housing 5, the lower scalpel housing 6, the spring 7.

Slika 4 prikazuje zaščito skalpela 2.Figure 4 shows the scalpel guard 2.

Slika 5 prikazuje mehanizem odpiranja in zapiranja skalpela 3.Figure 5 shows the opening and closing mechanism of the scalpel 3.

Slika 6 prikazuje nož skalpela 4.Figure 6 shows the scalpel blade 4.

Slika 7 prikazuje vzmet 7.Figure 7 shows spring 7.

Slika 8 prikazuje zgornje ohišje skalpela 5.Figure 8 shows the upper housing of the scalpel 5.

Slika 9 prikazuje spodnje ohišje skalpela 6.Figure 9 shows the lower housing of the scalpel 6.

Izvedbeni primer:Implementation example:

Skalpel za operacijo očesa z zaščito 1, zaobsega zaščito skalpela 2, mehanizem odpiranja in zapiranja skalpela 3, nož skalpela 4, zgornje ohišje skalpela 5, spodnje ohišje skalpela 6 in vzmet 7.Scalpel for eye surgery with protection 1, includes scalpel protection 2, scalpel opening and closing mechanism 3, scalpel blade 4, upper scalpel housing 5, lower scalpel housing 6 and spring 7.

Skalpel za operacijo očesa z zaščito 1 je sestavljen tako, da je nož skalpela 4 vstavljen v spodnje ohišje skalpela 6 s postopkom toplega vstavljanja. Del spodnjega ohišja skalpela 6 v katerega se vstavi nož skalpela 4 se segreje na temperaturo okrog 80°C, ki zagotavlja plastično deformacijo materiala spodnjega ohišja skalpela 6. Nož skalpela 4 se mehansko potisne v ustrezen segret del spodnjega ohišja skalpela 6, pri čemer se spodnje ohišje skalpela 6 plastično deformira. Po ohladitvi spodnjega dela ohišja skalpela 6 v katerega se vstavi nož skalpela 4, sta spodnje ohišje skalpela 6 in nož skalpela 4 nerazstavljivo spojena.The scalpel for eye surgery with protection 1 is assembled by inserting the scalpel blade 4 into the lower scalpel housing 6 by a hot insertion process. The part of the lower scalpel housing 6 into which the scalpel knife 4 is inserted is heated to a temperature of around 80°C, which ensures plastic deformation of the material of the lower scalpel housing 6. The scalpel knife 4 is mechanically pushed into the corresponding heated part of the lower scalpel housing 6, whereby the lower the scalpel housing 6 deforms plastically. After cooling the lower part of the scalpel housing 6 into which the scalpel knife 4 is inserted, the lower scalpel housing 6 and the scalpel knife 4 are inseparably joined.

V naslednjem koraku sestave skalpela za operacijo očesa z zaščito 1, se tudi ostali sestavni deli skalpela za operacijo očesa z zaščito 1 vstavijo v spodnje ohišje skalpela 6. Zaščita skalpela 2, vzmet 7 in mehanizem odpiranja in zapiranja skalpela 3 se vstavijo v spodnje ohišje skalpela 6.In the next step of assembling the eye surgery scalpel with protection 1, the other components of the eye surgery scalpel with protection 1 are also inserted into the lower scalpel housing 6. The scalpel protection 2, the spring 7 and the scalpel opening and closing mechanism 3 are inserted into the lower scalpel housing 6.

Spodnje ohišje skalpela 6 in zgornje ohišje skalpela 5 se postavita en na drugega v ustrezno lego in se trajno medsebojno povežeta s ultrazvočnim valjenjem, pri čemer so hkrati sestavni deli skalpela za operacijo očesa z zaščito 1 že vstavljeni v skalpel za operacijo očesa z zaščito 1.The lower scalpel body 6 and the upper scalpel body 5 are placed one on top of the other in a suitable position and permanently connected to each other by ultrasonic rolling, while at the same time the components of the eye surgery scalpel with protection 1 are already inserted into the eye surgery scalpel with protection 1.

Spodnje ohišje skalpela 6 in zgornje ohišje skalpela 5, sta izvedena iz plastičnega materiala, pri čemer sta oba dela predpripravljena za medsebojno spajanje v nerazstavljivo zvezo.The lower housing of the scalpel 6 and the upper housing of the scalpel 5 are made of plastic material, and both parts are pre-prepared to be connected to each other in an indestructible connection.

Spodnje ohišje skalpela 6 ima zaobsežen plastični del z luknjo v katerega se mehansko potisne nož skalpela 4, pri čemer se naveden del spodnjega ohišja skalpela 6 plastično deformira. Na medsebojnih povezovalnih ploskvah spodnjega ohišja skalpela 6 in zgornjega ohišja skalpela 5, so izvedene izboklinice in vdolbinice. Pri sestavi spodnjega ohišja skalpela 6 in zgornjega ohišja skalpela 5, se izboklinice pozicionirajo v pripadajoče vboklinice, nakar se spodnje ohišje skalpela 6 in zgornjega ohišje skalpela 5 medsebojno spojita v nerazstavljivo zvezo.The lower housing of the scalpel 6 has an enlarged plastic part with a hole into which the knife of the scalpel 4 is mechanically pushed, whereby the said part of the lower housing of the scalpel 6 is plastically deformed. On the mutual connecting surfaces of the lower scalpel housing 6 and the upper scalpel housing 5, protrusions and recesses are made. When assembling the lower case of the scalpel 6 and the upper case of the scalpel 5, the protrusions are positioned in the corresponding depressions, after which the lower case of the scalpel 6 and the upper case of the scalpel 5 are joined to each other in an inseparable connection.

Notranjosti spodnjega ohišja skalpela 6 in zgornjega ohišja skalpela 5, sta prilagojena za vstavitev zaščite skalpela 2, vzmeti 7 in mehanizma odpiranja in zapiranja skalpela 3. V obeh delih ohišja skalpela je oblikovno izvedeno ležišče, ki je hkrati omejevalec gibanja za zaščito skalpela 2.The insides of the lower scalpel housing 6 and the upper scalpel housing 5 are adapted for the insertion of the scalpel protection 2, the spring 7 and the mechanism for opening and closing the scalpel 3. In both parts of the scalpel housing, there is a designed bed, which is also a movement limiter for the protection of the scalpel 2.

V zgornjem ohišju skalpela 5 sta izvedeni še ustrezni luknji, ki omogočata delovanje mehanizma odpiranja in zapiranja skalpela 3.In the upper housing of the scalpel 5, there are also suitable holes that enable the operation of the opening and closing mechanism of the scalpel 3.

Na spodnjem ohišju skalpela 6 in na zgornjem ohišju skalpela 5, sta na mestu prijema skalpela izvedeni oblikovni dodatki v obliki izboklinic, ki zagotavljajo boljši oprijem skalpela za operacijo očesa z zaščito 1 med uporabo in zmanjšujejo možnosti zdrsa skalpela za operacijo očesa z zaščito 1 med njegovo uporabo.On the lower housing of the scalpel 6 and on the upper housing of the scalpel 5, there are design additions in the form of protrusions at the place of the scalpel grip, which ensure a better grip of the scalpel for eye surgery with protection 1 during use and reduce the chances of the scalpel for eye surgery with protection 1 slipping during its use use.

Zaščita skalpela 2 je izvedena iz prosojnega plastičnega materiala. Del zaščite skalpela 2 na strani noža skalpela 4 je oblikovan tako, da med nožem skalpela 4 in zaščito skalpela 2 ne pride do medsebojnega stika. Zaščita skalpela 2 je izvedena tako, da ima osnosimetrično gledano, del zaščite skalpela 2 na strani noža skalpela 4 večji premer, kot na njegovi drugi strani. Na del z manjšim premerom zaščite skalpela 2, se namesti vzmet 7, del zaščite skalpela 2, kjer se spremeni premer, pa služi kot omejevalec gibanja vzmeti 7 na strani zaščite skalpela 2.The protection of the scalpel 2 is made of transparent plastic material. The part of the scalpel protection 2 on the side of the scalpel knife 4 is designed so that there is no mutual contact between the scalpel knife 4 and the scalpel protection 2. The scalpel protection 2 is designed so that, axisymmetrically, the part of the scalpel protection 2 on the side of the scalpel knife 4 has a larger diameter than on its other side. A spring 7 is placed on the part with a smaller diameter of the scalpel protection 2, and the part of the scalpel protection 2, where the diameter changes, serves as a limiter of the movement of the spring 7 on the side of the scalpel protection 2.

Mehanizem odpiranja in zapiranja skalpela 3 je izveden iz plastičnega materiala. Telo mehanizma odpiranja in zapiranja skalpela 3 je v osnovi izvedeno osnosimetrično v obliki votlega valja. Ena osnovna ploskev valjaste oblike je oblikovana tako, da v svojo notranjost sprejme del zaščite skalpela 2 in krati sluzi kot omejevalec gibanja vzmeti 7, druga stran pa je namenjena za odpiranje in zapiranje skalpela za operacijo očesa z zaščito 1.The opening and closing mechanism of the scalpel 3 is made of plastic material. The body of the scalpel 3 opening and closing mechanism is basically axisymmetric in the form of a hollow cylinder. One base surface of a cylindrical shape is designed to receive a part of the scalpel protection 2 inside and serves as a limiter of the movement of the spring 7, while the other side is intended for opening and closing the scalpel for eye surgery with protection 1.

Mehanizem odpiranja in zapiranja skalpela 3 ima na obodu votlega valja izveden ozek podolgovat elastičen element, tako da podolgovat elastičen element deluje kot listnata vzmet.The opening and closing mechanism of the scalpel 3 has a narrow elongated elastic element formed on the circumference of the hollow cylinder, so that the elongated elastic element acts as a leaf spring.

Na podolgovatem elastičnem elementu sta izvedena gumb za odpiranje in zapiranje zaščite skalpela 2 in na vrhu podolgovatega elastičnega elemente trn, ki se zatakne v luknjo na zgornjem ohišju skalpela 5, ko je skalpel za operacijo očesa z zaščito 1 v odprtem stanju. Na nasprotni strani podolgovatega elastičnega elemente, je izveden omejevalec gibanja podolgovatega elastičnega elementa, ki preprečuje preveliko deformacijo matenala podolgovatega elastičnega elementa in s tem ščiti celoten skalpel za operacijo očesa z zaščito 1 pred poškodbo oziroma pred zlomom podolgovatega elastičnega elementa.A button for opening and closing the scalpel guard 2 is provided on the elongated elastic element, and on the top of the elongated elastic element there is a mandrel that is stuck into the hole on the scalpel upper housing 5 when the eye surgery scalpel with guard 1 is in the open state. On the opposite side of the elongated elastic element, a limiter of the movement of the elongated elastic element is implemented, which prevents excessive deformation of the material of the elongated elastic element and thereby protects the entire scalpel for eye surgery with protection 1 against damage or breakage of the elongated elastic element.

Vzmet 7 je izvedena kot vijačna vzmet in je iz kovinskega materiala. Premer vzmeti je takšen, da se lahko natakne na del zaščite skalpela 2, na katerem je osnosimetrično gledano manjši premer.The spring 7 is designed as a coil spring and is made of metal material. The diameter of the spring is such that it can be put on the part of the scalpel protection 2, which has a smaller diameter when viewed axisymmetrically.

Nož skalpela 4 je izveden iz kovinskega materiala. Nož skalpela 4 je izdelan s postopkom kovanja in naknadnega brušenja rezila. Pozicijo vstavljanja noža skalpela v spodnje ohišje skalpela 6, zagotavlja posebej pripravljena ploščata oblika, ki se zagotovi v fazi hladnega kovanja pri izdelavi noža skalpela 4.The scalpel knife 4 is made of metal material. The scalpel knife 4 is made by a process of forging and subsequent sharpening of the blade. The position of inserting the scalpel knife into the lower case of the scalpel 6 is ensured by a specially prepared flat shape, which is provided during the cold forging stage in the manufacture of the scalpel knife 4.

Ko je skalpel za operacijo očesa z zaščito 1 v zaprtem položaju, se s pritiskom na gumb za odpiranje in zapiranje zaščite skalpela 2, na vrhu podolgovatega elastičnega elementa, tm pomakne v notranjost ohišja skalpela. Vzmet 7 potisne celoten mehanizem odpiranja in zapiranja skalpela 3 nazaj, dokler se tm ne zatakne v luknjo na zgornjem ohišju skalpela 5. Hkrati se zaščita skalpela 2 pomakne v odprt položaj.When the scalpel for eye surgery with guard 1 is in the closed position, by pressing the button to open and close the scalpel guard 2, on top of the elongated elastic element, tm moves inside the scalpel housing. The spring 7 pushes the entire opening and closing mechanism of the scalpel 3 back until the tm is stuck in the hole on the upper housing of the scalpel 5. At the same time, the scalpel guard 2 moves to the open position.

Ko je skalpel za operacijo očesa z zaščito 1 v odprtem položaju, se s pritiskom na mehanizem odpiranja m zapiranja skalpela 3 tm izmakne iz luknje na zgornjem ohišju skalpela 5. Outnb za odpiranje in zapiranje zaščite skalpela 2, na podolgovatem elastičnem elementu se pomakne do skrajne lege luknje na zgornjem ohišju skalpela 5. Hkrati se stisne vzmet 7, ki potisne zaščito skalpela 2 v zaprt položajWhen the scalpel for eye surgery with protection 1 is in the open position, by pressing the opening mechanism m of the scalpel closing mechanism 3 tm is moved out of the hole on the upper scalpel housing 5. Outnb for opening and closing the scalpel protection 2, on the elongated elastic element, is moved to the extreme position of the hole on the scalpel upper housing 5. At the same time, the spring 7 is compressed, which pushes the scalpel protection 2 into the closed position

Razumljivo je, daje mogoče opisano rešitev izvesti tudi v drugačni oblikovni izvedenki, ki pa ne spreminja bistva izuma.It is understandable that the described solution can also be implemented in a different design, which does not change the essence of the invention.

Claims (22)

PATENTNI ZAHTEVKIPATENT CLAIMS 1. Skalpel za operacijo očesa z zaščito označen s tem, da zaobsega vsaj zaščito skalpela (2), mehanizem odpiranja in zapiranja skalpela (3), nož skalpela (4), zgornje ohišje skalpela (5), spodnje ohišje skalpela (6) in vzmet (7).1. A scalpel for eye surgery with a guard, characterized in that it includes at least a scalpel guard (2), a scalpel opening and closing mechanism (3), a scalpel blade (4), an upper scalpel housing (5), a lower scalpel housing (6) and spring (7). 2. Skalpel za operacijo očesa z zaščito po zahtevku 1, označen s tem, daje nož skalpela (4), vstavljen v ohišje skalpela s postopkom toplega vstavljanja.2. Scalpel for eye surgery with protection according to claim 1, characterized in that the scalpel blade (4) is inserted into the scalpel body by a hot insertion process. 3. Skalpel za operacijo očesa z zaščito po kateremkoli od zahtevkov 1 do 2 označen s tem, da se del ohišja skalpela v katerega se vstavi nož skalpela (4), segreje na višjo temperatura, ki zagotavlja plastično deformacijo materiala ohišja skalpela, nakar se nož skalpela (4) mehansko potisne v ustrezen segret del ohišja skalpela, pri čemer se ohišje skalpela plastično deformira, po ohladitvi dela ohišja skalpela v katerega je vstavljen nož skalpela (4), pa sta ohišje skalpela in nož skalpela (4) nerazstavljivo spojena.3. Scalpel for eye surgery with protection according to any one of claims 1 to 2, characterized in that the part of the scalpel housing into which the scalpel knife (4) is inserted is heated to a higher temperature, which ensures plastic deformation of the material of the scalpel housing, after which the knife mechanically pushes the scalpel (4) into the appropriate heated part of the scalpel housing, whereby the scalpel housing plastically deforms, and after cooling the part of the scalpel housing into which the scalpel blade (4) is inserted, the scalpel housing and the scalpel blade (4) are indissolubly joined. 4. Skalpel za operacijo očesa z zaščito po kateremkoli od zahtevkov 1 do 3 označen s tem, da so zaščita skalpela (2), vzmet (7) in mehanizem odpiranja in zapiranja skalpela (3) vstavljeni v ohišje skalpela.4. A scalpel for eye surgery with protection according to any one of claims 1 to 3, characterized in that the scalpel protection (2), the spring (7) and the scalpel opening and closing mechanism (3) are inserted into the scalpel housing. 5. Skalpel za operacijo očesa z zaščito po kateremkoli od zahtevkov 1 do 4 označen s tem, da sta spodnje ohišje skalpela (6) in zgornje ohišje skalpela (5) medsebojno spojena s ultrazvočnim valjenjem.5. A scalpel for eye surgery with protection according to any one of claims 1 to 4, characterized in that the lower scalpel housing (6) and the upper scalpel housing (5) are joined to each other by ultrasonic rolling. 6. Skalpel za operacijo očesa z zaščito po kateremkoli od zahtevkov 1 do 5 označen s tem, da sta spodnje ohišje skalpela (6) in zgornje ohišje skalpela (5) iz togega, toplotno deformabilnega materiala.6. Scalpel for eye surgery with protection according to any one of claims 1 to 5, characterized in that the lower scalpel housing (6) and the upper scalpel housing (5) are made of rigid, heat-deformable material. 7. Skalpel za operacijo očesa z zaščito po kateremkoli od zahtevkov 1 do 6 označen s tem, da sta spodnje ohišje skalpela (6) in zgornje ohišje skalpela (5) iz plastičnega materiala.7. Scalpel for eye surgery with protection according to any one of claims 1 to 6, characterized in that the lower scalpel housing (6) and the upper scalpel housing (5) are made of plastic material. 8. Skalpel za operacijo očesa z zaščito po kateremkoli od zahtevkov 1 do 7 označen s tem, da so na medsebojnih povezovalnih ploskvah spodnjega ohišja skalpela (6) in zgornjega ohišja skalpela (5) izvedene izboklinice in vdolbinice.8. Scalpel for eye surgery with protection according to any one of claims 1 to 7, characterized by the fact that the mutual connecting surfaces of the lower scalpel housing (6) and the upper scalpel housing (5) have protrusions and depressions. 9. Skalpel za operacijo očesa z zaščito po kateremkoli od zahtevkov 1 do 8 označen s tem, sta notranjosti spodnjega ohišja skalpela (6) in zgornjega ohišja skalpela (5), prilagojeni za vstavitev zaščite skalpela (2), vzmeti (7) in mehanizma odpiranja in zapiranja skalpela (3).9. A scalpel for eye surgery with protection according to any one of claims 1 to 8, characterized in that the insides of the lower scalpel housing (6) and the upper scalpel housing (5) are adapted to insert the scalpel protection (2), the spring (7) and the mechanism opening and closing the scalpel (3). 10. Skalpel za operacijo očesa z zaščito po kateremkoli od zahtevkov 1 do 9 označen s tem, je v notranjosti spodnjega ohišja skalpela (6) in zgornjega ohišja skalpela (5), oblikovno izvedeno ležišče, kije hkrati omejevalec gibanja za zaščito skalpela (2).10. A scalpel for eye surgery with protection according to any one of claims 1 to 9, characterized by the fact that, inside the lower scalpel housing (6) and the upper scalpel housing (5), there is a shaped bed which is also a movement limiter for protecting the scalpel (2) . 11. Skalpel za operacijo očesa z zaščito po kateremkoli od zahtevkov 1 do 10 označen s tem, sta v enem od delov ohišja skalpela, namreč spodnjega ohišja skalpela (6) ali zgornjega ohišja skalpela (6) izvedeni ustrezni luknji, ki omogočata delovanje mehanizma odpiranja in zapiranja skalpela (3).11. Scalpel for eye surgery with protection according to any one of claims 1 to 10, characterized by the fact that in one of the parts of the scalpel housing, namely the lower scalpel housing (6) or the upper scalpel housing (6), suitable holes are made that enable the operation of the opening mechanism and scalpel closures (3). 12. Skalpel za operacijo očesa z zaščito po kateremkoli od zahtevkov 1 do 11 označen s tem, da sta vsaj enem od delov ohišja skalpela, namreč na spodnjem ohišju skalpela (6) in na zgornjem ohišju skalpela (5), na mestu prijema skalpela za operacijo očesa z zaščito (1), izvedeni oblikovni dodatki, ki zagotavljajo boljši oprijem skalpela za operacijo očesa z zaščito (1) med uporabo.12. Scalpel for eye surgery with protection according to any one of claims 1 to 11, characterized by the fact that at least one of the parts of the scalpel housing, namely on the lower scalpel housing (6) and on the upper scalpel housing (5), is located at the point of grip of the scalpel for eye surgery with protection (1), designed accessories that ensure a better grip of the scalpel for eye surgery with protection (1) during use. 13. Skalpel za operacijo očesa z zaščito po kateremkoli od zahtevkov 1 do 12 označen s tem, daje zaščita skalpela (2) izvedena iz plastičnega prosojnega materiala.13. Scalpel for eye surgery with protection according to any one of claims 1 to 12 characterized by the fact that the scalpel protection (2) is made of transparent plastic material. 14. Skalpel za operacijo očesa z zaščito po kateremkoli od zahtevkov 1 do 13 označen s tem, da je zaščita skalpela (2) izvedena tako, da ima osnosimetrično gledano, del zaščite skalpela (2) na strani noža skalpela (4) večji premer, kot na njegovi drugi strani, na del z manjšim premerom zaščite skalpela (2), pa se namesti vzmet, del zaščite skalpela, kjer se spremeni premer, pa služi kot omejevalec gibanja vzmeti (7) na strani zaščite skalpela (2).14. Scalpel for eye surgery with protection according to any one of claims 1 to 13, characterized by the fact that the scalpel protection (2) is designed in such a way that, viewed axisymmetrically, the part of the scalpel protection (2) on the side of the scalpel knife (4) has a larger diameter, as on its other side, on the part with a smaller diameter of the scalpel protection (2), a spring is installed, and the part of the scalpel protection, where the diameter changes, serves as a limiter of the movement of the spring (7) on the side of the scalpel protection (2). 15. Skalpel za operacijo očesa z zaščito po kateremkoli od zahtevkov 1 do 14 označen s tem, daje mehanizem odpiranja in zapiranja skalpela (3) izveden iz togega materiala.15. Scalpel for eye surgery with protection according to any one of claims 1 to 14 characterized by the fact that the scalpel opening and closing mechanism (3) is made of a rigid material. 16. Skalpel za operacijo očesa z zaščito po kateremkoli od zahtevkov 1 do 15 označen s tem, da je mehanizem odpiranja in zapiranja skalpela (3) izveden iz plastičnega materiala.16. Scalpel for eye surgery with protection according to any one of claims 1 to 15, characterized in that the scalpel opening and closing mechanism (3) is made of plastic material. 17. Skalpel za operacijo očesa z zaščito po kateremkoli od zahtevkov 1 do 16 označen s tem, da je telo mehanizma odpiranja in zapiranja skalpela (3) v osnovi izvedeno osnosimetrično v obliki votlega valja, pri čemer je ena osnovna ploskev valjaste oblike oblikovana tako, da v svojo notranjost sprejme del zaščite skalpela (2) in krati služi kot omejevalec gibanja vzmeti (7), druga stran pa služi za odpiranje in zapiranje skalpela za operacijo očesa z zaščito (1).17. Scalpel for eye surgery with protection according to any one of claims 1 to 16, characterized by the fact that the body of the scalpel opening and closing mechanism (3) is basically axisymmetrically in the form of a hollow cylinder, and one basic surface of the cylindrical shape is designed in such a way that to accommodate a part of the scalpel protection (2) inside and serves as a spring movement limiter (7), while the other side serves to open and close the scalpel for eye surgery with protection (1). 18. Skalpel za operacijo očesa z zaščito po kateremkoli od zahtevkov 1 do 17 označen s tem, da ima mehanizem odpiranja in zapiranja skalpela (3) na obodu votlega valja, izveden ozek podolgovat elastičen element, kateremu material iz katerega je izveden mehanizem odpiranja in zapiranja skalpela (3) zagotavlja omejeno elastično gibanje, tako da podolgovat elastičen element deluje kot listnata vzmet.18. Scalpel for eye surgery with protection according to any one of claims 1 to 17, characterized by the fact that the opening and closing mechanism of the scalpel (3) has a narrow elongated elastic element on the circumference of the hollow cylinder, the material of which the opening and closing mechanism is made the scalpel (3) provides limited elastic movement so that the elongated elastic element acts as a leaf spring. 19. Skalpel za operacijo očesa z zaščito po kateremkoli od zahtevkov 1 do 18 označen s tem, da sta na podolgovatem elastičnem elementu, izvedena gumb za odpiranje in zapiranje zaščite skalpela (2) in na vrhu podolgovatega elastičnega elementa trn, ki se zatakne v luknjo na ohišju skalpela, ko je skalpel za operacijo očesa z zaščito (1) v odprtem stanju.19. Scalpel for eye surgery with protection according to any one of claims 1 to 18, characterized by the fact that on the elongated elastic element there are buttons for opening and closing the scalpel protection (2) and on the top of the elongated elastic element there are spikes that stick into the hole on the scalpel housing when the ophthalmic scalpel with guard (1) is in the open state. 20. Skalpel za operacijo očesa z zaščito po kateremkoli od zahtevkov 1 do 19 označen s tem, daje na nasprotni strani podolgovatega elastičnega elementa, izveden omejevalec gibanja podolgovatega elastičnega elementa, ki preprečuje preveliko deformacijo materiala podolgovatega elastičnega elementa in s tem ščiti celoten skalpel za operacijo očesa z zaščito (1) pred poškodbo.20. A scalpel for eye surgery with protection according to any one of claims 1 to 19, characterized by the fact that, on the opposite side of the elongated elastic element, a limiter of the movement of the elongated elastic element is implemented, which prevents excessive deformation of the material of the elongated elastic element and thus protects the entire scalpel for surgery eye with protection (1) against injury. 21. Skalpel za operacijo očesa z zaščito po kateremkoli od zahtevkov 1 do 20 označen s tem, da je nož skalpela (4) je izveden iz kovinskega materiala in je izdelan s postopkom kovanja in naknadnega brušenja rezila.21. Scalpel for eye surgery with protection according to any one of claims 1 to 20, characterized in that the scalpel knife (4) is made of metal material and is produced by a process of forging and subsequent grinding of the blade. 22. Skalpel za operacijo očesa z zaščito po kateremkoli od zahtevkov 1 do 21 označen s tem, da pozicijo vstavljanja noža skalpela (4) v enega od delov ohišja skalpela, zagotavlja posebej pripravljena ploščata oblika, ki se zagotovi v fazi hladnega kovanja pri izdelavi noža skalpela (4).22. Scalpel for eye surgery with protection according to any one of claims 1 to 21, characterized in that the position of inserting the scalpel knife (4) into one of the parts of the scalpel housing is ensured by a specially prepared flat shape, which is provided during the cold forging stage during the production of the knife scalpel (4).
SI202200022A 2022-02-21 2022-02-21 Scalpel for eye surgery with protection SI26313A (en)

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Family Cites Families (8)

* Cited by examiner, † Cited by third party
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US4611400A (en) * 1982-06-15 1986-09-16 Drake Anthony F Blade and process of making same
US5330492A (en) * 1992-10-21 1994-07-19 Dlh Concepts, Inc. Safety scalpel
US11134979B2 (en) * 2003-04-22 2021-10-05 Beaver-Visitec International (Us), Inc. Surgical knife safety handle
US7153317B2 (en) * 2003-05-30 2006-12-26 Ribbel International Limited Disposable guarded surgical scalpel
US8256331B2 (en) * 2008-11-20 2012-09-04 Alcon Research, Ltd. Guarded surgical knife handle
US8875405B2 (en) * 2010-04-09 2014-11-04 Oasis Medical, Inc. Micro surgical knife with safety feature
EP2584981B1 (en) * 2010-06-28 2015-06-03 MediPurpose Pte Ltd. Safety scalpel
US10555755B2 (en) * 2015-03-27 2020-02-11 Richard S. Werner Retractable device

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