WO2020035709A1 - Disposable perforator - Google Patents
Disposable perforator Download PDFInfo
- Publication number
- WO2020035709A1 WO2020035709A1 PCT/HU2019/050037 HU2019050037W WO2020035709A1 WO 2020035709 A1 WO2020035709 A1 WO 2020035709A1 HU 2019050037 W HU2019050037 W HU 2019050037W WO 2020035709 A1 WO2020035709 A1 WO 2020035709A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- drive shaft
- head
- drill head
- proximal
- chipping
- Prior art date
Links
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 12
- 238000005553 drilling Methods 0.000 claims abstract description 4
- 230000005489 elastic deformation Effects 0.000 claims abstract description 4
- 238000006073 displacement reaction Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 210000001951 dura mater Anatomy 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007428 craniotomy Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1695—Trepans or craniotomes, i.e. specially adapted for drilling thin bones such as the skull
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1613—Component parts
- A61B17/1615—Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material
- A61B17/1617—Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material with mobile or detachable parts
Definitions
- the present invention relates to a disposable perforator for perforating bone tissue.
- the perforator according to WO2015/150844A1 comprises a drive shaft having a rotation axis, a drill head having the same rotation axis, and a chipping head arranged coaxially around the drill head.
- the objective of the present invention is to improve the external connection between the drive shaft and the chipping head of such perforators.
- An objective of the invention is to provide a non-releasable connection, which guarantees that the parts of the perforator cannot be disassembled whereby it cannot occur that somebody takes the perforator apart, attempts to clean it (which can never be fully accomplished due to the spring disengagement mechanism) and then reassembles it and it is reused.
- a further objective of the invention is to stabilise the connection while the drive shaft and the drill head are rotating together and once the rotation is stopped.
- Fig. 1 is a partially cut-away side view of a perforator according to the invention.
- Fig. 2a is a side view of a drive shaft of the perforator according to Fig. 1.
- Fig. 2b is a side view of the drive shaft of the perforator according to Fig. 1 in a position rotated by 90 degrees.
- Fig. 2c is a plan view of the drive shaft of the perforator according to Fig. 1 taken from the direction of its distal end.
- Fig. 2d is a perspective view of the drive shaft of the perforator according to Fig. 1
- Fig. 3a is a side view of a drill head of the perforator according to Fig. 1.
- Fig. 3b is a side view of the drill head of the perforator according to Fig. 1 in a position rotated by 90 degrees.
- Fig. 3c is a plan view of the drill head of the perforator according to Fig. 1 taken from the direction of its proximal end.
- Fig. 3d is a perspective view of the drill head of the perforator according to Fig. 1.
- Fig. 4a is a side view of a chipping head of the perforator according to Fig.
- Fig. 4b is a side view of the chipping head of the perforator according to Fig.
- Fig. 4c is a cross sectional view taken along line A-A of Fig. 4b.
- Fig. 4d is a perspective view of the chipping head of the perforator according to Fig. 1.
- Fig. 5b is a top view of a securing ring of the perforator according to Fig. 1.
- Fig. 5a is a side view of the securing ring of the perforator according to Fig.
- Fig. 6 is a side view of the ring stop of the perforator according to Fig. 1.
- Fig. 7a is a side view of a slide ring of the perforator according to Fig. 1.
- Fig. 7b is a cross sectional view taken along line A-A of Fig. 7a.
- Fig 1 shows the main components of an exemplary embodiment of a perforator 10 according to the invention in an assembled state.
- the main components are as follows: a drive shaft 12 having a rotation axis t, a drill head 14 having the same rotation axis t and a chipping head 16 arranged coaxially therewith, and a securing ring 90 connecting the drive shaft 12 with the chipping head 16.
- the present invention is directed to the connection between the drive shaft 12 and the chipping head 16.
- the drive shaft 12 and the chipping head 16 are secured to each other by the securing ring 90, which also ensures non-releasable connection after assembly.
- a proximal portion 161 of a proximal wall 42 of the chipping head 16 extends beyond the drill head 14 which is arranged within the chipping head 16, and overlaps a distal portion 121 of the drive shaft 12.
- Grooves 122 and 162 are provided along the external circumference of the distal portion 121 of the drive shaft 12 and along the internal circumference of the proximal portion 161 of the chipping head 16, respectively, which together define a ring shaped nest 92 when the distal portion 121 of the drive shaft 12 and the proximal portion 161 of the chipping head 16 are inserted into one another and the two grooves 122, 162 are facing each other
- the securing ring 90 is shown separately in Figs. 5a and 5b.
- the dimensions of the ring 90 in it relaxed (non-stressed) state is chosen such that in the assembled state of the perforator 10 the securing ring 90 extends into both grooves 122, 162 forming the ring shaped nest 92 in order to prevent displacement of the grooves 122, 162 and thereby displacement of the drive shaft 12 and the chipping head 16 along the rotation axis t with respect to each other.
- the drive shaft 12 may be connected to a revolution reducer, so-called TREAPAN adapter, coupled with a drive motor (not shown), and may be formed for example as a Hudson cone as better seen in Figs. 2a - 2d.
- the drill head 14 and the chipping head 16 each comprise a distal cutting edge 15 and 17 respectively, and the distal cutting edge 15 of the drill head 14 extends beyond the distal cutting edge 17 of the chipping head 16.
- first connecting profile 20 is provided on a proximal end 18 of the drill head 14 (see Figs. 3a - 3d), while a second connecting profile 24 is provided on a distal end 22 of the drive shaft 12 (see Figs. 2a - 2d).
- the drill head 14 is arranged so as to be displaceable along the rotation axis t with respect to the chipping head 16 (and with respect to the drive shaft 12 at the same time) between a proximal position and a distal position.
- the second connecting profile 24 on the distal end 22 of the drive shaft 12 engages the first connecting profile 20 and cooperates therewith such as to transmit rotational motion from the drive shaft 12 to the drill head 14.
- the first connecting profile 20 on the proximal end 18 of the drill head 14 and the second connecting profile 24 on the distal end 22 of the drive shaft 12 are disengaged, whereby the driving torque ceases.
- the two abutting surfaces 26 and the two driving surfaces 28 each delimit a projection 30 and 32.
- the projections 32 of the drive shaft 12 are formed with a wedge surface 34 on their side opposite the driving surface 28.
- the length of the wedge surfaces 34 is preferably such that a clearance 35 is provided between the wedge surface 34 and the neighbouring driving surface 28 for receiving the rectangular projections 30 of the first connecting profile 20 of the drill head 14.
- the drive shaft 12 is provided with rectangular projections and the drill head 14 is provided with projections arranged between wedge surfaces and clearances.
- the two projections 30 of the connecting profile 20 are rotated with respect to each other by 180 degrees around the rotational axis t, however this angle depends on the number of the projections 30.
- those are preferably evenly spaced along the circumference of the proximal end 18, being in positions rotated by 120 degrees with respect to each other.
- n projections 30 are provided those are preferably rotated by 360/n degrees with respect to the neighbouring projection 30.
- the connecting profile 24 of the distal end 22 of the drive shaft 12 is designed to correspond to the number and arrangement of the abutting surfaces 26 and the projections 30; accordingly, the projections 32 of the drive shaft 12 are preferably also formed rotation-symmetrically and evenly spaced along the circumference of the distal end 22.
- connection length determines the distance by which the proximal end 18 of the drill head 14 must be displaced from the distal end 22 of the drive shaft 12 in order to terminate the torque transmission connection between the two.
- the connection length is between 0.4 to 1 mm, preferably 0.6 to 0.9 mm, more preferably approximately 0.7 mm.
- the drill head 14 may be displaced along the rotational axis t by a distance corresponding to the connection length before the drive mechanism is disengaged.
- Disengagement of the drive mechanism can be ensured by providing a connection between the drill head 14 and the chipping head 16, which transforms relative rotation of the drill head 14 and the chipping head 16 around the rotational axis t into relative displacement along the rotational axis t.
- this connection is ensured such that the drill head 14 comprises a bore hole 40 extending through an external surface 38 of the drill head 14, and an inwardly opening groove 46 with a proximal helical edge 44 corresponding to the driving direction is provided in a cylindrical wall 42 of the chipping head 16.
- An angle a between the helical edge 44 and the rotational axis t is preferably 40 to 50 degrees. In case of the embodiment depicted in Figs.
- this groove 46 is a triangular groove formed through the wall 42, one edge of the triangle forming the helical edge 44.
- grooves 46 with other shapes may be applied as well, which have a suitable proximal helical edge 44.
- the connection between the drill head 14 and the chipping head 16 is ensured by a bolt pin 48 arranged in the bore hole 40 of the drill head 14 and extending into the groove 46 of the chipping head 16, which bolt pin 48 is guided by the proximal helical edge 44.
- the helical edge 44 is formed such that its elevation 49 is greater than the connection length in order to provide for disengagement of the first connection profile 20 of the proximal end 18 of the drill head 14 from the second connection profile 24 of the of the distal end 22 of the drive shaft 12 such as to terminate the torque transmission connection between the two when the bolt pin 48 is guided from the proximal position defined by one end of the edge 44 to the distal position defined by an opposite end of the edge 44 along the trajectory defined by the edge 44.
- the perforator 10 is preferably provided with a mechanism for biasing the proximal end 18 of the drill head 14 from the distal end 22 of the drive shaft 12 when the perforator 10 is not being used. This can be achieved for example by providing nests 50 and 52 in the proximal end 18 of the drill head 14 and in the distal end 22 of the drive shaft 12 respectively, which nests 50, 52 open into one another when the drill head 14 and the drive shaft 12 are engaged and wherein a spring 54 is arranged.
- a spring stop 53 is also applied, which is shown separately in Fig. 6.
- the spring stop 53 is applied on an end of the spring 54 and it serves to prevent the spring 54 from catching the bottom of the nest 50 formed in the proximal end 18 of the drill head 14 after the drive shaft 12 and the drill head 14 have been disengaged during use which could otherwise cause further rotation of the drill head 14.
- the spring stop 53 is preferably made of copper or a copper alloy.
- the middle portion of the perforator 10, which is shown in a sectional view, is preferably encased by a cylindrical case 55 which also seals the openings 46 formed in the wall 42 of the chipping head 16, thus preventing any contamination from entering and hindering the displacement of the pin bolt 48.
- the proximal end 55a of the case 55 abuts the collar 58 of the drive shaft 12 as shown in Fig. 1 .
- the distal end 55b of the case 55 abuts a flange 43 protruding from the wall 42 of the chipping head 16.
- the case 55 is preferably made of plastic, e.g. such ABS material that can be gamma sterilized but is unsuitable for sterilization in an autoclave, whereby the case 55 cannot be desterilized in an autoclave which is a further measure to prevent re-use of the disposable perforator.
- a slide ring 64 is arranged between the drive shaft 12 and an end portion 163 of the proximally extending proximal portion 161 which end portion 163 has an increased inner diameter.
- the slide ring 64 is shown separately in Figs. 7a and 7b. In the assembled state of the perforator 10 a rim 64a of the slide ring 64 tightly fits between the collar 58 of the drive shaft 12 and the proximal end 164 of the chipping head 16 as can be seen in Fig. 1 .
- the slide ring 64 serves as a bearing and is preferably made of a soft plastic material, copper or a copper alloy or any material of similar property in order to prevent wearing between the drive shaft 12, which is preferably made of metal, in particular of stainless steel, and the wall 42 of the chipping head 16 when rotating and in order to prevent the components from getting stuck or sticking to each other which would hinder the disengagement during use.
- an inwardly facing side 64b of the rim 64a of the slide ring 64 and an outwardly facing side 90a of the distal end of the securing ring 90 are formed conically in order to facilitate sliding the slide ring 64 onto the securing ring 90 as will be explained later on.
- the perforator 10 is further provided with a security spring 80 which counteracts the effect of the ring 54 assisting the disengagement of the drill head 14.
- the security ring 80 is arranged between an external wall 14a of the drill head 14 and an internal wall 17a of the chipping head 16, within a ring shaped nest 82 defined by a proximal external circumferential flange 14b of the drill head 14 and a distal internal circumferential flange 17b of the chipping head 16.
- the length of the security spring 80 is determined from one direction by the position of the external circumferential flange 14b of the drill head 14 and from the other direction by the internal circumferential flange 16b of the chipping head 16. In the proximal position of the drill head 14, i.e.
- the security spring 80 when the proximal end 18 of the drill head 14 abuts the distal end 22 of the drive shaft 12 and the first and second connection profiles 20, 24 engage with each other, the security spring 80 is slightly biased (compressed).
- the spring 54 and the security spring 80 are preferably dimensioned such that in the proximal position of the drill head 14, the spring force is greater in the spring 54 arranged in the nest 52 of the drive shaft 12 and in the nest 50 of the drill head 14, than the spring force of the security spring 80.
- a spring 54 is used which has a greater spring constant than the spring constant of the security spring 80.
- the drill head 14 begins to rotate more rapidly together with the bolt pin 48 as compared to the rotation of the chipping head 16, which is allowed by the helical proximal edge 44 of the groove 46 receiving the bolt pin 48 and at the same time the helical proximal edge 44 guides the bolt pin 48 and the drill head 14 therewith until the bolt pin 48 and the drill head 14 reaches the distal position.
- the drill head 14 Since the case 55 and the securing ring 90 holds the drive shaft 12 at a constant distance from the chipping head 16, thus the drill head 14 is not only displaced relative to the chipping head 16 but is also displaced relative the drive shaft 12. Consequently, the abutting surfaces 26 of the first connecting profile 20 of the drill head 14 are gradually shifted along the driving surfaces 28 of the second connecting profile 24 of the drive shaft 12. As long as the extent of shifting is less then the connection length, the drill head 14 is still driven by the drive shaft 12, accordingly, by suitable dimensioning of the connection length it is possible to achieve that the drill head 14 cuts partially or wholly through the internal bone plate while shifting in the distal direction.
- the abutting surfaces 26 of the first connecting profile 20 of the drill head 14 disengage the driving surfaces 28 of the second connecting profile 24 of the drive shaft 12, whereby the driving torque ceases to act on the drill head 14, and together with it, on the chipping head 16.
- the chipping head 16 and the drill head 14 connected therewith by the bolt pin 48 come to a halt, whereby the perforator 10 only just cuts through the internal bone plate of the bone tissue, and automatically stops thereafter.
- the first spring 54 and the security spring 80 act in the opposite sense: in the proximal position of the drill head 14 the first spring 54 is more compressed, it exerts greater spring force which forces the drill head 14 in the distal direction, while the security ring 80 is less compressed, thus exerting a smaller spring force and forcing the drill head 14 in the proximal direction to a less extent. In the distal position of the drill head 14, however, the first spring 54 is less compressed, whereby the distal spring force decreases, while the security spring 80 becomes more compressed, thus the proximal spring force increases. Consequently, the spring 54 and the security spring 80 counterbalance each other's effect, which results in a more steady motion of the drill head 14, rendering the cutting motion more balanced.
- the securing ring 90 is placed around the distal portion 121 of the drive shaft 12 from the direction of the distal end 22 such that it is positioned around the groove 122 encircling the distal portion 121 of the drive shaft 12.
- the securing ring 90 is made of a resilient material (e.g. plastic such as ABS) and its not closed (that is it is partially cut open, whereby it can also be pushed over the part of the drive shaft 12, which has a larger diameter than the groove 122 when it is in a somewhat opened state which is achieved by the resilient deformation of the securing ring 90.
- the spring stop 53 is also applied.
- the spring stop 53 is inserted into one end of the spring 54 after which the spring 54 and the spring stop 53 are placed inside the nest 52 formed in the distal end 22 of the drive shaft 12.
- the security spring 80 is arranged inside the chipping head 16 on the flange 16b then the drill head 14 is guided through the security spring 80 and rotated to a position within the chipping head 16 where the bolt pin 48 can be pushed through the bore hole 40 and the opening 46 so as to traverse both the drill head 14 and the chipping head 16. Thereby the bolt pin 48 secures the chipping head 16, the drill head 14 and the security spring 80.
- the case 55 is pulled over the exterior of the chipping head 16 such that the distal end 55b abuts the flange 43 of the chipping head 16 whereby the case 55 retains the bolt pin 48.
- the components held together by the case are then pushed over the distal end 22 of the drive shaft 12.
- the end portion 163 of the chipping head 16 having a wider inner diameter slides onto the slide ring 64 until the proximal end 164 of the chipping head 16 abuts the rim 64a formed at the proximal end of the slide ring 64 and then pushes the slide ring 64 further along the drive shaft 12 up to its collar 58. Meanwhile, the slide ring 64 slides off the securing ring 90, which partially snaps out from the groove 122 when the internal groove 162 of the chipping head is moved thereover.
- the internal groove 162 is formed such as to partially receive the securing ring 90 therein as can be seen in Fig.
- the securing ring 90 is positioned partly inside the groove 122 provided on the external side of the drive shaft 12 and partly inside the groove 162 provided on the internal side of the chipping head 16, thereby preventing any further displacement of the chipping head 16 and the drive shaft 12 with respect to each other in both directions along the rotation axis t. Consequently, the assembled chipping head 16 can no longer be pulled off the drive shaft 12.
- the non-releasable connection guarantees that the components of the perforator 10 cannot be disassembled whereby it cannot occur that somebody takes the perforator 10 apart, attempts to clean it (which can never be fully accomplished due to the spring disengagement mechanism) and then reassembles it and it is reused.
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Neurosurgery (AREA)
- Surgical Instruments (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA3151301A CA3151301A1 (en) | 2018-08-17 | 2019-07-25 | Disposable perforator |
CN201980052085.9A CN112533549A (en) | 2018-08-17 | 2019-07-25 | Disposable perforator |
BR112021002582-0A BR112021002582A2 (en) | 2018-08-17 | 2019-07-25 | disposable drill |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
HUP1800291 | 2018-08-17 | ||
HUP1800291 | 2018-08-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2020035709A1 true WO2020035709A1 (en) | 2020-02-20 |
Family
ID=89720054
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/HU2019/050037 WO2020035709A1 (en) | 2018-08-17 | 2019-07-25 | Disposable perforator |
Country Status (4)
Country | Link |
---|---|
CN (1) | CN112533549A (en) |
BR (1) | BR112021002582A2 (en) |
CA (1) | CA3151301A1 (en) |
WO (1) | WO2020035709A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220410353A1 (en) * | 2021-06-29 | 2022-12-29 | Antonio Martos Calvo | Release system and cutting profile applied to disposable self-locking intracranial drill bit |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4830001A (en) * | 1987-08-10 | 1989-05-16 | Codman & Shurtleff, Inc. | Assembly sleeve for cranial drill |
US5380333A (en) * | 1993-03-03 | 1995-01-10 | Codman & Shurtleff, Inc. | Surgical drill |
WO2015150844A1 (en) | 2014-03-31 | 2015-10-08 | Ujvari Mihály Gyula | Perforator |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2676639A1 (en) * | 1991-05-21 | 1992-11-27 | Peltier Patrick | IMPROVEMENTS ON HELICAL FORESTS FOR BONE SURGERY, PARTICULARLY FOR DENTAL SURGERY. |
US7766920B2 (en) * | 2003-11-26 | 2010-08-03 | Synthes Usa, Llc | Cannulated fastener system |
WO2006104060A1 (en) * | 2005-03-29 | 2006-10-05 | Hi-Lex Corporation | Double needle for medical treatment, bone centesis needle, and bone marrow sampling device |
DE102007036354A1 (en) * | 2007-07-31 | 2009-02-05 | Medicon Eg. Chirurgiemechaniker-Genossenschaft | cranial |
TWI315234B (en) * | 2007-08-07 | 2009-10-01 | Shajeng Hardware Co Ltd | Cutter handle for holding cutter |
JP3143187U (en) * | 2008-04-30 | 2008-07-10 | 俊子 林 | Connecting / disconnecting structure to / from electric rotating tool mounting bit |
US8597316B2 (en) * | 2008-09-05 | 2013-12-03 | Stryker Corporation | Cutting accessory for use with a medical/surgical powered handpiece, the accessory having retention features that facilitate the fine or coarse adjustment of the extension of the accessory shaft |
BRMU8802628U2 (en) * | 2008-11-26 | 2010-08-03 | Antonio Martos Calvo | drill to drill cranial bone |
US9687917B2 (en) * | 2012-11-04 | 2017-06-27 | Timothy Carl Pamatmat | Quick release rotary tool mandrel |
CN203970481U (en) * | 2014-05-30 | 2014-12-03 | 重庆西山科技有限公司 | Disposable use skull drill bit |
CN204744306U (en) * | 2015-05-21 | 2015-11-11 | 北京鸿鹄高翔科技开发有限公司 | Tail end disposable drill bit of inflation and drilling tool |
WO2017164455A1 (en) * | 2016-03-21 | 2017-09-28 | 황적희 | Detachable medical cutting tool |
-
2019
- 2019-07-25 CN CN201980052085.9A patent/CN112533549A/en active Pending
- 2019-07-25 BR BR112021002582-0A patent/BR112021002582A2/en unknown
- 2019-07-25 WO PCT/HU2019/050037 patent/WO2020035709A1/en active Application Filing
- 2019-07-25 CA CA3151301A patent/CA3151301A1/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4830001A (en) * | 1987-08-10 | 1989-05-16 | Codman & Shurtleff, Inc. | Assembly sleeve for cranial drill |
US5380333A (en) * | 1993-03-03 | 1995-01-10 | Codman & Shurtleff, Inc. | Surgical drill |
WO2015150844A1 (en) | 2014-03-31 | 2015-10-08 | Ujvari Mihály Gyula | Perforator |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220410353A1 (en) * | 2021-06-29 | 2022-12-29 | Antonio Martos Calvo | Release system and cutting profile applied to disposable self-locking intracranial drill bit |
US11877758B2 (en) * | 2021-06-29 | 2024-01-23 | Antonio Martos Calvo | Release system and cutting profile applied to disposable self-locking intracranial drill bit |
Also Published As
Publication number | Publication date |
---|---|
CN112533549A (en) | 2021-03-19 |
BR112021002582A2 (en) | 2021-05-04 |
CA3151301A1 (en) | 2020-02-20 |
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