CN109381242A - Medical tool - Google Patents
Medical tool Download PDFInfo
- Publication number
- CN109381242A CN109381242A CN201710721126.1A CN201710721126A CN109381242A CN 109381242 A CN109381242 A CN 109381242A CN 201710721126 A CN201710721126 A CN 201710721126A CN 109381242 A CN109381242 A CN 109381242A
- Authority
- CN
- China
- Prior art keywords
- blade
- drill bit
- medical tool
- cutting edge
- knife handle
- 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
- 238000005520 cutting process Methods 0.000 claims abstract description 47
- 238000000465 moulding Methods 0.000 claims description 6
- 238000001356 surgical procedure Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 9
- 238000004080 punching Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 6
- 210000000988 bone and bone Anatomy 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 230000010415 tropism Effects 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
- A61B17/16—Instruments for performing osteoclasis; Drills or chisels for bones; Trepans
- A61B17/1604—Chisels; Rongeurs; Punches; Stamps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/16—Instruments for performing osteoclasis; 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/16—Instruments for performing osteoclasis; Drills or chisels for bones; Trepans
- A61B17/1659—Surgical rasps, files, planes, or scrapers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
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)
- Surgical Instruments (AREA)
Abstract
The present invention provides a kind of Medical tool, including knife handle, blade and drill bit, the blade has side cutting edge, and one end of the blade is connect with the knife handle, and the other end is connect with the drill bit, the drill bit and blade coaxial arrangement.Drill bit and cutter with side cutting edge are integrated in a structure by the present invention, it is ensured that the central axis with reaming or when repairing hole that drills in surgical procedure can be completely coincident.Therefore, Medical tool of the invention is self-centering and guiding performance is good, does not need cumbersome alignment, alignment operation when can process the higher hole of precision, and punch, so simplifying the operating process of punching, improves perforating efficiency, moreover, the precision of punching is higher.
Description
Technical field
The present invention relates to the field of medical instrument technology, in particular to the cutter of a kind of aperture in the biological tissues such as bone.
Background technique
Bone surgery has knife handle and multiple cutting edges with reamer, to modify the rotary cutter on ossis surface.?
When implementing bone surgery, reamer and drill bit using relatively conventional.Drill bit and reamer are two kinds of independent tools, are made respectively
With.It first positioned, punched on bone with drill bit, then with reamer reaming or repair hole.Such usage mode causes to expand using reamer
Hole or while repairing hole, need to be aligned script drill bit punched hole, are overlapped central axis.And existing medical reamer it is self-centering and
Guiding performance is poor, and the difficulty of alignment function is larger, and the precision of punched hole is difficult to ensure.Moreover, being currently used for the reamer of orthopaedics also
There are the following problems:
1), knife handle and cutting edge are integrally formed, and manufacture difficulty is big, at high cost；
2), easy to wear, cutting edge is easy to burst apart；
Summary of the invention
The purpose of the present invention is to provide a kind of Medical tools, and to solve, medical reamer is self-centering in the prior art and leads
One or more of the problems such as tropism is poor, manufacture difficulty is big, easy to wear, cutting edge easily bursts apart.
To achieve the above object, the present invention provides a kind of Medical tool, including knife handle, blade and drill bit, the blades
With side cutting edge；One end of the blade is connect with the knife handle, and the other end is connect with the drill bit, the drill bit and described
Blade coaxial arrangement.
Optionally, the knife handle is seperated molding structure with the blade.
Optionally, the knife handle is detachably connected with the blade.
Optionally, the drill bit and the blade are seperated molding structure.
Optionally, the blade is detachably connected with the drill bit.
Optionally, the drill bit includes cutting portion, positioning region and interconnecting piece, the positioning region setting in the interconnecting piece and
Between the cutting portion, the interconnecting piece is connect with the blade, positioning region insertion blade end face determining corresponding thereto
In the hole of position, it is ensured that the drill bit and the blade are in coaxial state.
Optionally, the positioning region is that a cylindrical body and/or the interconnecting piece have external screw thread.
Optionally, cutlery is cut in the lateral incision main cutting edge and wiper edges, and the wiper edges are cut by fillet and the master
It cuts sword to be connected, the radius of the fillet is 0.01mm~0.05mm.
Optionally, cutlery is cut in the lateral incision anterior angle, relief angle and wiper edges, and the anterior angle is between 0 °~10 °, after described
Angle is between 0 °~30 °, and the width of the wiper edges is between 0.2mm~0.4mm.
Optionally, the drill bit has chisel edge, and the width of the chisel edge is between 0.1mm~0.2mm.
Compared with prior art, Medical tool of the invention includes having the blade of side cutting edge and connecting with the blade
The drill bit connect, the drill bit and blade coaxial arrangement, are just integrated in one for drill bit and cutter with side cutting edge in this way
In a structure, it is ensured that the central axis to drill with reaming or when repairing hole in surgical procedure can be completely coincident.Therefore, this hair
Bright Medical tool is self-centering and guiding performance is good, does not need when can process the higher hole of precision, and punch cumbersome
Alignment, alignment operation improve perforating efficiency so simplifying the operating process of punching, moreover, the precision of punching is higher.
In a preferred embodiment of the present invention, the blade has wiper edges, and the wiper edges pass through fillet and master
Cutting edge connection is designed with this by the passivation that fillet realizes side cutting edge, in this way, which surgical procedure can be greatly lowered
The risk that sharpening damage is burst apart is cut in lateral incision, and the safety and stability of surgical procedure can be greatly improved.
Detailed description of the invention
Fig. 1 is the stereoscopic schematic diagram of the Medical tool of one embodiment of the invention；
Fig. 2 is the main view of Medical tool shown in FIG. 1；
Fig. 3 is the stereoscopic schematic diagram of the drill bit of one embodiment of the invention；
Fig. 4 is the main view of drill bit shown in Fig. 3；
Fig. 5 is the stereoscopic schematic diagram after drill bit rotation predetermined angular shown in Fig. 3；
Fig. 6 is cross-sectional view of the Medical tool shown in Fig. 2 along A-A line；
Fig. 7 is the partial enlarged view of Medical tool shown in fig. 6；
Fig. 8 is the partial enlarged view of drill bit shown in fig. 5.
10- Medical tool；
11- knife handle；
12- blade, 121- point of a knife；
13- drill bit, 131- cutting portion, the positioning region 132-, 133- interconnecting piece, 134- cutter groove；
14- changeover portion；
15- interface.
Specific embodiment
To keep the purpose of the present invention, advantages and features clearer, below in conjunction with 1~8 couple of doctor proposed by the present invention of attached drawing
It is described in further detail with cutter.It should be noted that attached drawing is all made of very simplified form and uses non-accurate ratio
Example, only for the purpose of facilitating and clarifying the purpose of the embodiments of the invention.
As used in the specification and the appended claims, singular "a", "an" and "the" includes
Plural reference, in addition in addition non-content explicitly points out.As used in the specification and the appended claims, term "or"
Usually carried out with including the meaning of "and/or" using, in addition in addition non-content explicitly points out.
Fig. 1 is the stereoscopic schematic diagram of the Medical tool of one embodiment of the invention, and Fig. 2 is the master of Medical tool shown in FIG. 1
View, as depicted in figs. 1 and 2, the Medical tool 10 of the present embodiment include knife handle 11, blade 12 and drill bit 13.Wherein, described
Blade 12 has side cutting edge (side cutting edge is also referred to as cutter tooth).The side cutting edge can be one or more, one or
The side of blade 12 is arranged in multiple side cutting edges, and multiple side cutting edges are preferably equidistantly spaced from along the circumferential direction of blade 12.It is optional
Ground, the side cutting edge can be straight sword, can also be helical edges.It is preferred that the blade 12 is configured to a reamer.
One end of the blade 12 is connect with knife handle 11, it is preferable that and the knife handle 11 is seperated molding structure with blade 12,
So as to reduce manufacture difficulty, processing cost is reduced.It is further preferred that the knife handle 11 is detachably connected with blade 12, in favor of
It is individually replaced the part wherein damaged, blade 12 easy to wear is especially replaced, use cost can be reduced in this way.Optionally,
The knife handle 11 is detachably connected with blade 12 by the realization of the connection types such as screw thread, clamping, and assembly and disassembly are convenient.Specifically
, the knife handle 11 and blade 12 are coaxially connected and form coaxial clyinder.
It is further alternative, changeover portion 14 is offered between the knife handle 11 and blade 12, the blade 12 passes through changeover portion
14 are detachably connected with knife handle 11.It is detachably connected by the two since the service life of knife handle 11 is longer than blade 12, it can be with
The blade 12 damaged is replaced at any time, to extend the service life of Medical tool.In addition, the diameter of the changeover portion 14 is less than knife handle
11 and blade 12 diameter, in this way can be in order to being ground cutting edge.Circle is offered in the joint of the knife handle 11 and changeover portion 14
Arc R, the radius of the circular arc R can be 0.2~0.5mm.
The other end of the blade 12 is connect with drill bit 13, and the preferably described blade 12 is similarly seperated molding with drill bit 13 and ties
Structure reduces processing cost to reduce manufacture difficulty.It is further preferred that the blade 12 is detachably connected with drill bit 13, in order to independent
Two parts are replaced, save the cost, optionally, the blade 12 are realized with drill bit 13 by connection types such as screw thread, clampings
It is detachably connected.
Particularly, the drill bit 13 is coaxially disposed with blade 12, i.e., the axis of drill bit 13 is overlapped with the axis of blade 12, this
Sample can guarantee that central axis when drill bit 13 drills is consistent with central axis when 12 hole machined of blade.With the drill bit of discrete
It is compared with reamer (or other kinds of cutter), drill bit and blade with side cutting edge are integrated in a structure by the present invention
On, it is ensured that in surgical procedure, central axis when drilling can be completely heavy with the central axis of hole machined when non-drilled
It closes.Therefore, Medical tool of the invention is self-centering and guiding performance is good, when can process the higher hole of precision, and punch simultaneously
Cumbersome alignment, alignment operation are not needed, so simplifying the operating process of punching, improves perforating efficiency, moreover, punching
Precision is higher.
It is the stereoscopic schematic diagram of the drill bit of one embodiment of the invention refering to Fig. 3 to Fig. 5, Fig. 3, Fig. 4 is drill bit shown in Fig. 3
Main view, Fig. 5 is the stereoscopic schematic diagram after drill bit shown in Fig. 3 rotation predetermined angular, and the drill bit 13 includes cutting portion
131, positioning region 132 and interconnecting piece 133, the cutting portion 131 are the part for carrying out shear action.
One end of the cutting portion 131 is axially extending to be formed with positioning region 132, and the positioning region 132 is far from cutting portion 131
One end axially extending be formed with interconnecting piece 133.The interconnecting piece 133 has external screw thread, can be with tool internal thread blade 12
Connection.In a preferred embodiment, the end-face helical hole upper end center of the blade 12 has a big as positioning region 132
Location hole (not shown), screw thread plays fixed function, and positioning region 132 is inserted into positioning hole and plays positioning action, so as to
Drill bit 13 and blade 12 is enabled to be maintained at coaxial state.Preferably, the positioning region 132 is cylindrical body.
In the present embodiment, the Medical tool 10 further includes interface 15, which can connect with external agency, with logical
External agency's driving Medical tool 10 is crossed to move.The external agency can be manually or electrically tool.
Further, Fig. 6 is Medical tool shown in Fig. 2 along the continuous cross-sectional view of A-A, and Fig. 7 is Medical tool shown in fig. 6
Partial enlarged view, as shown in Figure 6 and Figure 7, cutlery is cut in the lateral incision of the blade 12 anterior angle α, rear angle beta and wiper edges τ, described
Anterior angle is preferably between 0 °~10 °, and the relief angle is preferably between 0 °~30 °, and the width b of the wiper edges τ is preferably in 0.2mm
Between~0.4mm.Aforementioned anterior angle is the anterior angle of main cutting edge λ, wiper edges τ, and aforementioned relief angle is after main cutting edge λ, wiper edges τ
Angle.
The side cutting edge also has main cutting edge λ, and the wiper edges τ is preferably by fillet R' and main cutting edge λ phase
Even, the radius of the fillet R' is preferably between 0.01mm~0.05mm.Here, realizing the blunt of side cutting edge by fillet R'
Change design, in this way, which surgical procedure lateral incision, which can be greatly lowered, cuts the risk that sharpening damage is burst apart, can be greatly improved and perform the operation
The safety and stability of journey.
Specifically, the chip space (not labeled) of a plurality of spiral setting is provided on the blade 12, wherein the blade 12
The upper entity part for forming chip space is knife spine, and the intersection of chip space and knife spine in the axial direction forms main cutting edge λ, and arranges
It considers the intersection of slot and knife spine in radial directions to be worth doing and forms end cutting edge (not labeled), the intersection shape of end cutting edge and main cutting edge λ
At point of a knife 121, wiper edges τ is additionally provided on point of a knife 121.
Fig. 8 is the partial enlarged view of drill bit shown in fig. 5, as shown in figure 8, the drill bit 13 has chisel edge S, the chisel edge
Width b ' preferably between 0.1mm~0.2mm, the relatively small chisel edge of size, convenient for can be carried out when performing an operation effectively
Shear action.In general, the size of chisel edge determines the size of cutting resistance, under equal conditions, chisel edge is bigger, cutting resistance
Bigger, the thicker drill bit of chisel edge is easier to drift about, and chisel edge is located at the center of drill bit 13, and (i.e. row cuts two cutter grooves 134
Slot becomes apparent from and is shown in Fig. 5) it intersects herein.Here, angularly design (i.e. following γ and φ 1 is unequal) does not make chisel edge exist
The advantages of center width of drill bit is substantially zeroed, the design: drill bit will not shift with the variation of cutting material, thus not
It will affect surgical quality.
Further, the drill bit 13 also there is chisel edge angle γ, chisel edge angle γ to take the complementary angle of two angles in Fig. 8, i.e.,
γ=φ 2- φ 1, φ 2 are specifically the anterior angle on chisel edge, and φ 1 is the relief angle on chisel edge.For example, φ 2 is 65 ° desirable, φ 1 is desirable
10 °, then, γ is 55 ° desirable.As shown in figure 4, the drill bit 13 also have wedge angle X, the value of X can be 60 °, 90 ° or
120 °, the design of wedge angle can play good guiding role, and manufacture is more convenient.
It holds, in actual use, knife handle 11, blade 12, drill bit 13 need to only be combined and be put into determination by operator
Position can be used, and can be very good the stability and reliability that guarantee drilling, reaming (repairing hole) in surgical procedure.It needs to illustrate
, the blade 12 of the present embodiment is particularly suitable for being configured to reamer, can substantially meet the needs of bone surgery punching.
Finally, presently preferred embodiments of the present invention as described above, but be not limited to the above embodiment disclosed range, such as
Connection between each adjacent component is not limited to be threadedly coupled, as long as the mode that can be realized quick assembly and disassembly all may be used.
In conclusion Medical tool of the invention includes the brill for having the blade of side cutting edge and connecting with the blade
Head, the drill bit and blade coaxial arrangement, are just integrated in a structure for drill bit and cutter with side cutting edge in this way
On, it is ensured that the central axis to drill with reaming or when repairing hole in surgical procedure can be completely coincident.Therefore, doctor of the invention
With cutter is self-centering and guiding performance is good, cumbersome alignment, right is not needed when can process the higher hole of precision, and punch
Neat operation, so simplifying the operating process of punching, improves perforating efficiency, moreover, the precision of punching is higher.
Above description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair
Any change, the modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to the protection of claims
Range.
Claims (10)
1. a kind of Medical tool, which is characterized in that including knife handle, blade and drill bit, the blade has side cutting edge；The knife
One end of body is connect with the knife handle, and the other end is connect with the drill bit, the drill bit and blade coaxial arrangement.
2. Medical tool as described in claim 1, which is characterized in that the knife handle is seperated molding structure with the blade.
3. Medical tool as claimed in claim 2, which is characterized in that the knife handle is detachably connected with the blade.
4. Medical tool as described in claim 1, which is characterized in that the drill bit and the blade are seperated molding structure.
5. Medical tool as claimed in claim 4, which is characterized in that the blade is detachably connected with the drill bit.
6. Medical tool as described in claim 1, which is characterized in that the drill bit includes cutting portion, positioning region and interconnecting piece,
The positioning region is arranged between the interconnecting piece and the cutting portion, and the interconnecting piece is connect with the blade, the positioning
Portion is inserted into the location hole of blade end face corresponding thereto, it is ensured that the drill bit and the blade are in coaxial state.
7. Medical tool as claimed in claim 6, which is characterized in that the positioning region is a cylindrical body and/or the connection
Portion has external screw thread.
8. Medical tool as described in claim 1, which is characterized in that cutlery is cut in the lateral incision main cutting edge and wiper edges,
The wiper edges are connected by fillet with the main cutting edge, and the radius of the fillet is 0.01mm~0.05mm.
9. Medical tool as described in claim 1, which is characterized in that cutlery is cut in the lateral incision anterior angle, relief angle and wiper edges,
The anterior angle between 0 °~10 °, the relief angle between 0 °~30 °, the width of the wiper edges 0.2mm~0.4mm it
Between.
10. Medical tool as described in claim 1, which is characterized in that the drill bit has chisel edge, and the width of the chisel edge exists
Between 0.1mm~0.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710721126.1A CN109381242A (en) | 2017-08-14 | 2017-08-14 | Medical tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710721126.1A CN109381242A (en) | 2017-08-14 | 2017-08-14 | Medical tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109381242A true CN109381242A (en) | 2019-02-26 |
Family
ID=65416729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710721126.1A Pending CN109381242A (en) | 2017-08-14 | 2017-08-14 | Medical tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109381242A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113977642A (en) * | 2021-12-03 | 2022-01-28 | 山东数字人科技股份有限公司 | Specimen freezing section cutter |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2232727Y (en) * | 1995-09-15 | 1996-08-14 | 中国人民解放军总后勤部卫生部药品仪器检验所 | Portable skull drill |
| CN2664604Y (en) * | 2003-09-29 | 2004-12-22 | 万邦高科技股份有限公司 | Hand tools for orthopedic surgery |
| CN1585623A (en) * | 2001-11-21 | 2005-02-23 | 库尔斯恩蒂斯股份公司 | Attachable/detachable reamer head for surgical reamer |
| CN102510738A (en) * | 2009-08-26 | 2012-06-20 | 史赛克爱尔兰公司 | Ribbed Surgical Drill |
| CN103920920A (en) * | 2014-05-06 | 2014-07-16 | 江苏中晟钻石工具有限公司 | Disc milling cutter |
| WO2017042914A1 (en) * | 2015-09-09 | 2017-03-16 | プロスパー株式会社 | Bone drill reamer |
-
2017
- 2017-08-14 CN CN201710721126.1A patent/CN109381242A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2232727Y (en) * | 1995-09-15 | 1996-08-14 | 中国人民解放军总后勤部卫生部药品仪器检验所 | Portable skull drill |
| CN1585623A (en) * | 2001-11-21 | 2005-02-23 | 库尔斯恩蒂斯股份公司 | Attachable/detachable reamer head for surgical reamer |
| CN2664604Y (en) * | 2003-09-29 | 2004-12-22 | 万邦高科技股份有限公司 | Hand tools for orthopedic surgery |
| CN102510738A (en) * | 2009-08-26 | 2012-06-20 | 史赛克爱尔兰公司 | Ribbed Surgical Drill |
| CN103920920A (en) * | 2014-05-06 | 2014-07-16 | 江苏中晟钻石工具有限公司 | Disc milling cutter |
| WO2017042914A1 (en) * | 2015-09-09 | 2017-03-16 | プロスパー株式会社 | Bone drill reamer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113977642A (en) * | 2021-12-03 | 2022-01-28 | 山东数字人科技股份有限公司 | Specimen freezing section cutter |
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| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20190226 |
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