CN110251280A - A kind of pulp cavity bone cement withdrawing device - Google Patents
A kind of pulp cavity bone cement withdrawing device Download PDFInfo
- Publication number
- CN110251280A CN110251280A CN201910582981.8A CN201910582981A CN110251280A CN 110251280 A CN110251280 A CN 110251280A CN 201910582981 A CN201910582981 A CN 201910582981A CN 110251280 A CN110251280 A CN 110251280A
- Authority
- CN
- China
- Prior art keywords
- bone cement
- drill bit
- withdrawing device
- pulp cavity
- push
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002639 bone cement Substances 0.000 title claims abstract description 36
- 238000009434 installation Methods 0.000 claims abstract description 4
- 230000033001 locomotion Effects 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims 1
- 210000000988 bone and bone Anatomy 0.000 abstract description 9
- 230000006378 damage Effects 0.000 abstract description 5
- 230000001054 cortical effect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 210000000080 chela (arthropods) Anatomy 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3662—Femoral shafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2/4607—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of hip femoral endoprostheses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physical Education & Sports Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The present invention relates to medical instruments, specifically a kind of pulp cavity bone cement withdrawing device, on the housing and rotatable drill bit including shell and rear end installation, the drill bit is in hollow form, and inner cavity is provided with the push-pull rod that can be moved axially along the inner cavity, which stretches out shell and be connected with handle, the other end is provided with driving mechanism, it is equipped with grasping mechanism in chisel edge, the push-pull rod is pushed and pulled by handle, which drives the driving mechanism that the grasping mechanism is driven to radially expand or collapse.The present invention is equipped with grasping mechanism, and when chisel edge passes through among bone cement, after tip penetrates bone cement, controlling grasping mechanism by handle becomes open configuration from rounding state, so that it may quickly pull out bone cement.Meanwhile the present invention is additionally provided with guider, passes through the direction of control guider, it is ensured that the tunnel that the inner ring for the lead ring that drill bit passes through is passed through will not damage cortical bone.
Description
Technical field
The present invention relates to medical instrument, specifically a kind of pulp cavity bone cement withdrawing device.
Background technique
With the arrival of Chinese aging society and the development of joint surgery, the patient for needing row hip revision to perform the operation
Increase year by year.Revision procedure difficulty is big, if the previous type femoral bone end prosthesis used of performing the operation is bone cement prosthese, femur in overhaul technology
The cleaning and taking-up of original bone cement are a major challenge in pulp cavity.In overhaul technology, the remaining bone cement of femoral bone cavitas medullaris must be thorough
Cleaning, existing bone cement removal equipment have pulp cavity round bur, pulp cavity directly to bore, curet, pulp cavity osteotome, pulp cavity finger pin, cleave knife, marrow
Core pincers etc..But existing device cannot rapidly take out bone cement after destroying pulp cavity bone cement, and during taking-up,
Part bone cement is hard and locked engagement is in femoral cortex, it is easy to cause destruction, the perforation even femoral shaft bone of femoral cortex
Folding increases patient's pain.
Summary of the invention
In view of the above technical problems, the present invention provide it is a kind of can quickly, safely remove the withdrawing device of pulp cavity bone cement.
The technical scheme of the invention to solve the technical problem is: a kind of pulp cavity bone cement withdrawing device, including
Shell and rear end are installed on the housing and rotatable drill bit, the drill bit are in hollow form, and inner cavity is provided with can be interior along this
The push-pull rod of chamber axial movement, the push-pull rod one end stretch out shell and are connected with handle, and the other end is provided with driving mechanism, in drill bit
Front end is equipped with grasping mechanism, pushes and pulls the push-pull rod by handle, which drives the driving mechanism to drive the gripper
Structure is radially expanded or is collapsed.
Preferably, the driving mechanism includes the guide block being fixedly connected with the push-pull rod other end and drives fortune by the guide block
Dynamic drive rod, the drive rod drive the grasping mechanism movement.
Preferably, the grasping mechanism include drill bit outer wall is set and along the circumferentially distributed several barbs of the drill bit and
Several positioning pins of drill bit outer wall are fixed at, each barb is connect with a drive rod, and each drive rod drives
Corresponding barb is moved to rotate around corresponding positioning pin.
Preferably, each described barb one end is free end, the other end is driving end, and driving end is mounted on corresponding institute
It states on positioning pin, each described drive rod one end is stretched out inner cavity and is fixedly connected with corresponding driving end.
Preferably, each drive rod other end forms guide post, it is radially provided with guide groove on the guide block, the guide post
It is caught in the guide groove, when guide block moves axially with push-pull rod and the drive rod other end is driven to move axially, the guide post is along guide groove
It moves radially.
Preferably, the inner cavity is fixed with several connecting rods, inner cavity and a positioning pin are stretched out in one end of each connecting rod
It is fixedly connected.
Preferably, the drill bit outer wall forms several accommodating grooves, each barb can be collapsed in corresponding accommodating groove.
Preferably, each barb is arc-shaped.
Preferably, the chisel edge is provided with guider.
Preferably, the guider includes lead ring and guide rod, the inner ring of the lead ring can receiving drill bit front end, lead ring
Outer ring is fixedly connected with the guide rod, and the guide rod other end extends to drill bit rear end and is connected with handle.
As can be known from the above technical solutions, the present invention is equipped with grasping mechanism, when chisel edge passes through among the bone cement, point
After end penetrates bone cement, controlling grasping mechanism by handle becomes open configuration from rounding state, so that it may which bone cement is fast
Speed pulls out.Meanwhile the present invention is additionally provided with guider, passes through the direction of control guider, it is ensured that the lead ring that drill bit passes through it is interior
The tunnel that ring passes through will not damage cortical bone.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of preferred embodiment of the present invention.
Specific embodiment
The present invention is discussed in detail below with reference to Fig. 1, illustrative examples of the invention and explanation are used to explain this herein
Invention, but it is not as a limitation of the invention.
The present invention provides a kind of pulp cavity bone cement withdrawing device, including shell 1 and rear end installation are on the housing and can
The drill bit 2 of rotation, drill bit are rotated by motor driven, and the drill bit of rotation can be to pulp cavity bone cement circumgyration incision, to take out bone water
Mud.The drill bit is in hollow form, and inner cavity is provided with the push-pull rod 3 that can be moved axially along the inner cavity, which stretches out
Shell is connected with handle 4, and the other end is provided with driving mechanism 5, is equipped with grasping mechanism 6 in chisel edge；In implementation process, hand
Push-pull rod described in handle push-pull, the push-pull rod drive the driving mechanism that the grasping mechanism is driven to radially expand or collapse.The present invention
Withdrawing device when not working, grasping mechanism is in rounding state；When cutting bone cement using withdrawing device of the invention, crawl
Mechanism is in rounding state, and when drill bit penetrates bone cement and then pushes push-pull rod by handle, push-pull rod drives driving mechanism
It drives grasping mechanism to open, then pulls back drill bit, grasping mechanism pawl lives bone cement at this time, can quickly remove bone cement.
After the completion of work, push-pull rod is pulled by handle, grasping mechanism, which collapses, replys first trial state.
Driving mechanism 5 of the invention includes the guide block 51 being fixedly connected with the push-pull rod other end and drives movement by the guide block
Drive rod 52, which drives grasping mechanism movement, realizes the opening and gathering of grasping mechanism.Specifically, institute
Stating grasping mechanism 6 includes drill bit outer wall being arranged in and along the circumferentially distributed several barbs 61 of the drill bit and being fixed at outside drill bit
Several positioning pins 62 of wall, each barb are connect with a drive rod, each drive rod drive corresponding barb around
Corresponding positioning pin rotation, to realize radially expanding or collapsing for barb by the forward direction or counter-rotating of barb.
In implementation process, each described barb one end is free end, and the other end is driving end, and driving end is mounted on correspondence
The positioning pin on, each described drive rod one end is stretched out inner cavity and is fixedly connected with corresponding driving end, each driving
The bar other end forms guide post 53, and guide groove 54 is radially provided on the guide block, which is caught in the guide groove, and guide block is with push-pull rod
When moving axially and the drive rod other end being driven to move axially, the guide post is moved radially along guide groove.Specifically, when push-and-pull pushes away
When pull rod, guide block axial movement, the other end of drive rod is with movement, at this time since one end of drive rod is by positioning pin and driving
End constrains, and one end is rotated around positioning pin when the other end of drive rod moves axially, and diameter necessarily occurs for the drive rod other end
To movement, the present invention can meet its radial motion using the matching design of guide post and guide groove.The fit system of guide groove and guide post is adopted
With clamping, prevent the two from break-off occurs when moving.If guide groove uses dovetail groove, guide post can be moved radially along dovetail groove, but
Will not be moved axially with respect to dovetail groove, i.e., both without departing from.
Fixed locating stud in order to facilitate the installation of, the inner cavity are fixed with several connecting rods 7, in one end of each connecting rod is stretched out
Chamber is fixedly connected with a positioning pin.Preferably, the drill bit outer wall forms several accommodating grooves 8, each barb can be collapsed
In corresponding accommodating groove, when preventing bit operation, barb interference can also reduce volume.Each barb is arc-shaped, can protect
Demonstrate,proving after barb opens is in umbrella, is conducive to grab bone cement.
The chisel edge of the invention is provided with guider 9, with starter, drill bit conduct route is prevented to be damaged to bone
Cortex.Specifically, the guider includes lead ring 91 and guide rod 92, and the inner ring of the lead ring is slightly larger than outside diameter, is boring
When head work, in lead ring inner ring range internal cutting, radial cortical bone is avoided damage to.In implementation process, lead ring outer diameter with it is interior
The difference of diameter about 3mm is more convenient guiding.The outer ring of lead ring is fixedly connected with the guide rod, and the guide rod other end is to drill bit rear end
Extend and be connected with handle 93, can control the direction of guider, by handle as a result, to guide drill bit to cut in specified range
It cuts, to guarantee that the tunnel that drill bit passes through will not damage cortical bone, improves surgical effect, reduce patient's pain.
Claims (10)
1. a kind of pulp cavity bone cement withdrawing device, including shell and rear end installation are on the housing and rotatable drill bit, special
Sign is: the drill bit is in hollow form, and inner cavity is provided with the push-pull rod that can be moved axially along the inner cavity, which stretches
Shell is connected with handle out, and the other end is provided with driving mechanism, is equipped with grasping mechanism in chisel edge, pushed and pulled by handle described in
Push-pull rod, the push-pull rod drive the driving mechanism that the grasping mechanism is driven to radially expand or collapse.
2. pulp cavity bone cement withdrawing device according to claim 1, it is characterised in that: the driving mechanism includes and push-pull rod
The guide block and drive the drive rod moved by the guide block that the other end is fixedly connected, which drives the grasping mechanism movement.
3. pulp cavity bone cement withdrawing device according to claim 2, it is characterised in that: the grasping mechanism includes that setting is being bored
Head outer wall and along the circumferentially distributed several barbs of the drill bit and the several positioning pins for being fixed at drill bit outer wall, it is each it is described
Hook is connect with a drive rod, and each drive rod drives corresponding barb to rotate around corresponding positioning pin.
4. pulp cavity bone cement withdrawing device according to claim 3, it is characterised in that: each described barb one end is freely
End, the other end are driving end, and driving end is mounted on the corresponding positioning pin, each described drive rod one end stretch out inner cavity with
Corresponding driving end is fixedly connected.
5. pulp cavity bone cement withdrawing device according to claim 4, it is characterised in that: each drive rod other end molding
There is guide post, be radially provided with guide groove on the guide block, which is caught in the guide groove, and guide block moves axially with push-pull rod and drives drive
When the lever other end moves axially, the guide post is moved radially along guide groove.
6. pulp cavity bone cement withdrawing device according to claim 3, it is characterised in that: the inner cavity is fixed with several companies
Bar, one end of each connecting rod are stretched out inner cavity and are fixedly connected with a positioning pin.
7. pulp cavity bone cement withdrawing device according to claim 3, it is characterised in that: the drill bit outer wall forms several receipts
Receive slot, each barb can collapse in corresponding accommodating groove.
8. pulp cavity bone cement withdrawing device according to claim 3, it is characterised in that: each barb is arc-shaped.
9. according to claim 1 to pulp cavity bone cement withdrawing device described in 8 any one, it is characterised in that: the chisel edge
It is provided with guider.
10. pulp cavity bone cement withdrawing device according to claim 9, it is characterised in that: the guider includes lead ring and leads
Bar, the inner ring of the lead ring can receiving drill bit front end, the outer ring of lead ring is fixedly connected with the guide rod, the guide rod other end to
Drill bit rear end extends and is connected with handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910582981.8A CN110251280A (en) | 2019-07-01 | 2019-07-01 | A kind of pulp cavity bone cement withdrawing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910582981.8A CN110251280A (en) | 2019-07-01 | 2019-07-01 | A kind of pulp cavity bone cement withdrawing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110251280A true CN110251280A (en) | 2019-09-20 |
Family
ID=67923422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910582981.8A Pending CN110251280A (en) | 2019-07-01 | 2019-07-01 | A kind of pulp cavity bone cement withdrawing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110251280A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4476861A (en) * | 1979-11-06 | 1984-10-16 | Christos Dimakos | Instrument for removal of a bone cement tube in an artificial femur head reimplantation |
| US5190551A (en) * | 1990-12-14 | 1993-03-02 | Zimmer, Inc. | Controlled apparatus and method for extracting cement mantles from bone recesses |
| US20020128721A1 (en) * | 1997-02-13 | 2002-09-12 | Kwan-Ho Chan | Bone cement plug for deployment in a bone canal |
| US6524319B1 (en) * | 1998-12-22 | 2003-02-25 | Ferton Holding S.A. | Surgical instrument for mechanically removing bone cement |
| TW557785U (en) * | 2001-12-31 | 2003-10-11 | A Spine Holding Group Corp | Spine drilling device |
| CN101305161A (en) * | 2005-11-09 | 2008-11-12 | 山特维克知识产权股份有限公司 | Self drilling rock bolt |
| CN202031482U (en) * | 2011-05-13 | 2011-11-09 | 乔国华 | Square piston type anchoring and chambering drilling rig |
| CN203066865U (en) * | 2013-01-24 | 2013-07-17 | 李海广 | Anchor rod drill capable of broaching |
| US20140257239A1 (en) * | 2013-03-08 | 2014-09-11 | Kyphon Sarl | Bone fracture reduction system and methods of using the same |
| CN105496535A (en) * | 2016-01-04 | 2016-04-20 | 张兰发 | Medical miniature back shore device |
| CN107106186A (en) * | 2014-10-19 | 2017-08-29 | Tag医疗器材农业合作有限公司 | The external member of device is removed with bone material comprising guiding system |
| CN211023317U (en) * | 2019-07-01 | 2020-07-17 | 中南大学湘雅医院 | Marrow cavity bone cement removing device |
-
2019
- 2019-07-01 CN CN201910582981.8A patent/CN110251280A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4476861A (en) * | 1979-11-06 | 1984-10-16 | Christos Dimakos | Instrument for removal of a bone cement tube in an artificial femur head reimplantation |
| US5190551A (en) * | 1990-12-14 | 1993-03-02 | Zimmer, Inc. | Controlled apparatus and method for extracting cement mantles from bone recesses |
| US20020128721A1 (en) * | 1997-02-13 | 2002-09-12 | Kwan-Ho Chan | Bone cement plug for deployment in a bone canal |
| US6524319B1 (en) * | 1998-12-22 | 2003-02-25 | Ferton Holding S.A. | Surgical instrument for mechanically removing bone cement |
| TW557785U (en) * | 2001-12-31 | 2003-10-11 | A Spine Holding Group Corp | Spine drilling device |
| CN101305161A (en) * | 2005-11-09 | 2008-11-12 | 山特维克知识产权股份有限公司 | Self drilling rock bolt |
| CN202031482U (en) * | 2011-05-13 | 2011-11-09 | 乔国华 | Square piston type anchoring and chambering drilling rig |
| CN203066865U (en) * | 2013-01-24 | 2013-07-17 | 李海广 | Anchor rod drill capable of broaching |
| US20140257239A1 (en) * | 2013-03-08 | 2014-09-11 | Kyphon Sarl | Bone fracture reduction system and methods of using the same |
| CN107106186A (en) * | 2014-10-19 | 2017-08-29 | Tag医疗器材农业合作有限公司 | The external member of device is removed with bone material comprising guiding system |
| CN105496535A (en) * | 2016-01-04 | 2016-04-20 | 张兰发 | Medical miniature back shore device |
| CN211023317U (en) * | 2019-07-01 | 2020-07-17 | 中南大学湘雅医院 | Marrow cavity bone cement removing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5242585B2 (en) | Endoscopic endoscopic treatment device, surgical equipment and bone tissue cutting tool | |
| US5989278A (en) | Method and apparatus for mechanical transmyocardial revascularization of the heart | |
| US5624447A (en) | Surgical tool guide and entry hole positioner | |
| CN1261080C (en) | Surgical reamer and method of using same | |
| US5439474A (en) | Morcellator system | |
| JP5926688B2 (en) | Apparatus and method for access to bone and cavity equipment | |
| CN101534731B (en) | Surgical cutting devices | |
| US20130046140A1 (en) | Method and apparatus for tissue morcellation | |
| JPH05184521A (en) | Apparatus and arthroscope operating of knee | |
| PT88965B (en) | Apparatus for removing oily or cartilaginous fabrics provided with a hollow chisel or crankshaft fixed on a drive shaft | |
| WO2012021866A2 (en) | Systems and methods for harvesting follicular units | |
| EP0566694A1 (en) | Method and device for intracorporeal liquidization of tissue and/or intracorporeal fragmentation of calculi during endoscopic surgical procedures | |
| JP2010510841A5 (en) | ||
| US20160199072A1 (en) | Bone removal under direct visualization | |
| KR20100040948A (en) | Surgical kits and methods | |
| US10441296B2 (en) | Corer and method using same | |
| US20150272609A1 (en) | Instrument and Method to Enhance Articular Cartilage Regeneration | |
| CN104997552B (en) | A kind of surgery boring cutter and its application method | |
| CN110251280A (en) | A kind of pulp cavity bone cement withdrawing device | |
| CN211023317U (en) | Marrow cavity bone cement removing device | |
| EP3376972B1 (en) | Surgical tunneling instrument with expandable section | |
| JP2011189124A (en) | Insertion device and method of use | |
| WO2021146679A1 (en) | Powered bone-graft harvester | |
| CN210872063U (en) | Operation tool kit for femoral head necrosis bone transplantation | |
| CN210112743U (en) | Hair follicle extraction device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |