CN106618682A - Manufacturing process for medical scalpel - Google Patents
Manufacturing process for medical scalpel Download PDFInfo
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- CN106618682A CN106618682A CN201611204112.4A CN201611204112A CN106618682A CN 106618682 A CN106618682 A CN 106618682A CN 201611204112 A CN201611204112 A CN 201611204112A CN 106618682 A CN106618682 A CN 106618682A
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- blade
- knife
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- screwed hole
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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
- A61B2017/00526—Methods of manufacturing
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- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a manufacturing process for a medical scalpel. One end of a blade serves as a cutting edge, the other end of the blade serves as an inserting part, an upper concave hole and a lower concave hole are formed in the upper end face and the lower end face of the inserting part respectively, and an inserting hole allowing the inserting part to be embedded therein is formed in the front end of a strip-shaped knife handle. An upper threaded hole, a middle threaded hole and a lower threaded hole are sequentially formed in the front portion of the strip-shaped knife handle in the circumferential direction, a locking screw is screwed into the middle threaded hole and presses the inserting part, an upper bolt rod is screwed into the upper threaded hole and embedded into the upper concave hole of the inserting part, and a lower bolt rod is screwed into the lower threaded hole and embedded into the lower concave hole of the inserting part. The blade is obtained through the following steps that 50-60 parts of superfine tungsten carbide, 8-10 parts of titanium carbide, 6-8 parts of chromium carbide, 4-8 parts of molybdenum disilicide, titanium nitride, vanadium carbide and graphite powder are put in a pulverizer to be pulverized. According to the medical scalpel obtained through the manufacturing process, the material structure of the blade is more compact, the bending strength and the tipping resistance are improved, and the problem that a knife body is prone to looseness and shaking is avoided.
Description
Technical field
The present invention relates to medical instruments field, more particularly to a kind of medical surgical knife manufacturing process.
Background technology
Scalpel is the indispensable instrument for carrying out surgical operation, and its security is heavy to closing for operator and sufferer
Will.In the past traditional operation knife generally had two types：One kind is modeling handle scalpel, and another kind is steel handle scalpel.Modeling handle operation
Knife is mainly made up of disposable blade and disposable modeling handle, and modeling handle front portion is provided with blade bearing, and blade is arranged on
On blade bearing.Steel handle scalpel is mainly made up of disposable blade and the non-disposable steel handle for using, using front needs
Blade is installed on handle of a knife, blade is removed from handle of a knife after use；Prior art presence is difficult to avoid that in use
The problem for rock, loosening, it is also possible to which the situation that cutter head comes off under external force or so can occur, it is dangerous high.
The content of the invention
The present invention provides a kind of medical surgical knife manufacturing process, and the medical surgical knife that this manufacturing process is obtained makes blade
Material tissue is even closer, increased bending strength and chipping resistance, it is to avoid the problem that cutter hub easily loosens, rocks.
To reach above-mentioned purpose, the technical solution used in the present invention is：A kind of medical surgical knife manufacturing process, including：
Blade, bar shaped handle of a knife, one end of the blade is blade, and the other end is Plug Division, and this Plug Division upper surface and lower surface are distinguished
Upper concave hole and lower shrinkage pool are provided with, the bar shaped handle of a knife front end has the jack being embedded in for Plug Division；The front portion of the bar shaped handle of a knife
Circumferentially it is provided with upper screwed hole, middle screwed hole and lower screwed hole successively, a lock screw screwed hole and compresses Plug Division in screwing in,
Shank of bolt is screwed in the upper concave hole of upper screwed hole and embedded Plug Division on one, and once shank of bolt screws in lower screwed hole and embedded grafting
In the lower shrinkage pool in portion；The knife edge of the blade is 70 ~ 80 ° with blade lengths angular separation, and this blade top has one to fall
Angle inclined-plane a, noose for being used to being enclosed within hand is installed on the rear portion of the bar shaped handle of a knife；
The blade is obtained by following steps：
Step one, by 50 ~ 60 parts of ultrafine tungsten carbide, 8 ~ 10 parts of titanium carbide, 6 ~ 8 parts of chromium carbide, 4 ~ 8 parts of molybdenum disilicide, nitridation
Pulverization process is carried out in 7 ~ 9 parts of titanium, 3 ~ 4 parts of input pulverizers of vanadium carbide 1 ~ 2 and graphite powder, diameter is formed mixed less than 20 microns
Close powder；
Step 2, by forcing press to mixture particle carry out be molded compacting form pressed compact；
Step 3, by pressed compact placement sintering furnace be sintered to form blade blank, comprise the following steps that：
Step 3-1,260 DEG C are first warming up to, then with 4 ~ 6 DEG C per hour of ramp to 500 DEG C, are incubated 1 ~ 2 hour, this rank
Duan Caiyong vacuum conditions are sintered；
Step 3-2, again with 8 ~ 12 DEG C per hour of ramp to 1260 DEG C, be incubated 1 ~ 2 hour, this stage atmosphere be argon gas and
The mixed gas that nitrogen is formed, sintering pressure now is 6Mpa；
Step 3-3, again with 2 ~ 4 DEG C per hour of ramp to 1380 DEG C, be incubated 1 ~ 2 hour, this stage atmosphere be argon gas, this
When sintering pressure be 4Mpa；
Step 3-4, along with the furnace cooling；
Step 4, fine grinding is carried out to blade blank, load opens cutting edge of a knife or a sword and grinding process forms preliminary blade；
Step 5, the preliminary blade of step 4 is carried out liquid nitrogen deep process so as to obtain the blade.
Further improved technical scheme is as follows in above-mentioned technical proposal：
Preferably, the section of the bar shaped handle of a knife is circle.
Preferably, the knife edge of the blade is 75 ° or 78 ° with blade lengths angular separation.
Preferably, the temperature of the subzero treatment of the step 4 is less than subzero 80 DEG C.
Because above-mentioned technical proposal is used, the present invention has compared with prior art following advantages：
1st, medical surgical knife manufacturing process of the present invention, it adopts 50 ~ 60 parts of ultrafine tungsten carbide, 8 ~ 10 parts of titanium carbide, chromium carbide
1 ~ 2 part of 6 ~ 8 parts, 4 ~ 8 parts of molybdenum disilicide, 7 ~ 9 parts of titanium nitride and vanadium carbide are sintered so that the blade of scalpel possesses superelevation
Hardness, and open that the blade after cutting edge of a knife or a sword is quite sharp, and high intensity is not easy bending occur；Its sintering process three phases
Pressure is sequentially switched to high-pressure sinter, sub-high pressure sintering by vacuum, and with the switching of specific components atmosphere, is conducive to carbide more
Dissipate and separate out, and then make the material of blade organize even closer, increased bending strength and chipping resistance.
2nd, medical surgical knife manufacturing process of the present invention, one end of its blade is blade, and the other end is Plug Division, this grafting
Portion upper surface and lower surface have upper concave hole and lower shrinkage pool, and the bar shaped handle of a knife front end has for inserting that Plug Division is embedded in
Hole；The front portion of the bar shaped handle of a knife is circumferentially provided with successively upper screwed hole, middle screwed hole and lower screwed hole, and a lock screw is screwed in
Middle screwed hole simultaneously compresses Plug Division, and shank of bolt is screwed in the upper concave hole of upper screwed hole and embedded Plug Division on one, once shank of bolt
Screw in the lower shrinkage pool of lower screwed hole and embedded Plug Division, it is easy accessibility, reliable and stable, realize stereoscopic three-dimensional and position, it is to avoid
The problem that cutter hub easily loosens, rocks, with good popularizing application prospect；Secondly, the wrist of its medical worker passes through noose
Afterwards, can prevent scalpel from sliding, it is to avoid bar shaped handle of a knife surface is smooth, the defect for slipping is easy in surgical procedure, from
And greatly reduce malpractice rate.
3rd, medical surgical knife manufacturing process of the present invention, one end of its blade is blade, and the other end is Plug Division, blade
Knife edge is 70 ~ 80 with blade lengths angular separation, and its order of accuarcy is high, can not cut off meat fiber tissue, to disease in vivo
Becoming tissue, to cut out wound little, and bleeding is few, without large area wound and intraluminal tissue and air contact, infection probability is reduced, without the need for seam
Close, greatly shorten operating time, postoperative pain is light, it is fast to recover, scar is trickle or without scar；Secondly, its blade upper design
One chamfering inclined-plane plays guide effect, the resistance that blade top edge comes because of friction belt is greatly reduced, so as to reduce edge
Damage probability.
Description of the drawings
Accompanying drawing 1 is medical surgical knife structural representation of the present invention；
Accompanying drawing 2 is the partial schematic diagram of accompanying drawing 1；
Accompanying drawing 3 is the partial schematic diagram of accompanying drawing 1.
In the figures above：1st, blade；2nd, bar shaped handle of a knife；21st, upper screwed hole；22nd, middle screwed hole；23rd, lower screwed hole；3rd, knife
Sword；4th, Plug Division；41st, upper concave hole；42nd, lower shrinkage pool；5th, jack；6th, lock screw；7th, upper shank of bolt；8th, lower shank of bolt；9th, fall
Angle inclined-plane；10th, noose.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment the invention will be further described：
Embodiment 1 ~ 4：A kind of medical surgical knife manufacturing process, including：Blade 1, bar shaped handle of a knife 2, one end of the blade 1 is
Blade 3, the other end is Plug Division 4, and this upper surface of Plug Division 4 and lower surface have upper concave hole 41 and lower shrinkage pool 42, described
The front end of bar shaped handle of a knife 2 has the jack 5 being embedded in for Plug Division 4；The front portion of the bar shaped handle of a knife 2 is circumferentially provided with successively screw thread
Hole 21, middle screwed hole 22 and lower screwed hole 23 a, lock screw 6 screwed hole 22 and compresses Plug Division 4 in screwing in, shank of bolt on
In 7 upper concave holes 41 for screwing in upper screwed hole 21 and embedded Plug Division 4, once shank of bolt 8 screws in lower screwed hole 23 and embedded grafting
In the lower shrinkage pool 42 in portion 4；The edge of blade 3 of the blade 1 and the length direction angle of blade 1 are 70 ~ 80 °, this top of blade 3 tool
There is a chamfering inclined-plane 9, a noose 10 for being used to being enclosed within hand is installed on the rear portion of the bar shaped handle of a knife 2.
The blade 1 is obtained by following steps：
Step one, by 50 ~ 60 parts of ultrafine tungsten carbide, 8 ~ 10 parts of titanium carbide, 6 ~ 8 parts of chromium carbide, 4 ~ 8 parts of molybdenum disilicide, nitridation
Pulverization process is carried out in 7 ~ 9 parts of titanium, 1 ~ 2 part of vanadium carbide and 3 ~ 4 parts of input pulverizers of graphite powder, diameter is formed and is less than 20 microns
Mixed-powder；Specifically it is made up of following parts by weight of component, as shown in table 1：
Table 1
Step 2, by forcing press to mixture particle carry out be molded compacting form pressed compact；
Step 3, by pressed compact placement sintering furnace be sintered to form blade blank, comprise the following steps that：
Step 3-1,300 DEG C are first warming up to, then with 5 DEG C per hour of ramp to 480 DEG C, are incubated 1 ~ 2 hour, this stage
Sintered using vacuum condition；
Step 3-2, again with 10 DEG C per hour of ramp to 1250 DEG C, be incubated 1 ~ 2 hour, this stage atmosphere is argon gas and nitrogen
The mixed gas that gas is formed, sintering pressure now is 6Mpa；
Step 3-3, again with 3 DEG C per hour of ramp to 1350 DEG C, be incubated 1 ~ 2 hour, this stage atmosphere be argon gas, now
Sintering pressure be 4Mpa；
Step 3-4, along with the furnace cooling；
Step 4, fine grinding is carried out to blade blank, load opens cutting edge of a knife or a sword and grinding process forms preliminary blade；
Step 5, the preliminary blade of step 4 is carried out liquid nitrogen deep process so as to obtain the blade 1.
The section of above-mentioned bar shaped handle of a knife 2 is circle, and the edge of blade 3 and the length direction angle of blade 1 of insert 1 are
75°。
The section of above-mentioned bar shaped handle of a knife 2 is circle, and the edge of blade 3 and the length direction angle of blade 1 of insert 1 are
78°。
The temperature of the subzero treatment of the step 4 is less than subzero 80 DEG C.
During using above-mentioned medical surgical knife manufacturing process so that the blade of scalpel possesses the hardness of superelevation, Er Qiekai
Blade after cutting edge of a knife or a sword is quite sharp, and high intensity is not easy bending occur；Its sintering process three phases pressure by vacuum according to
It is secondary to be switched to high-pressure sinter, sub-high pressure sintering, and with the switching of specific components atmosphere, be conducive to carbide dispersion to separate out, and then
The material for making blade organizes even closer, increased bending strength and chipping resistance；Secondly, its easy accessibility, reliable and stable, reality
Stereoscopic three-dimensional positioning is showed, it is to avoid the problem that cutter hub easily loosens, rocks, with good popularizing application prospect；Secondly, its doctor
The wrist of business personnel can prevent scalpel from sliding through after noose, it is to avoid bar shaped handle of a knife surface is smooth, in surgical procedure
The defect for slipping is easy to, so as to greatly reduce malpractice rate；Again, one end of its blade is blade, and the other end is slotting
Socket part, knife edge and the blade lengths angular separation of blade are 70 ~ 80, and its order of accuarcy is high, can not cut off meat fiber group
Knit, it is little that internal pathological tissues are cut out with wound, bleeding is few, without large area wound and intraluminal tissue and air contact, reduce infection
Probability, without the need for suture, greatly shortens operating time, and postoperative pain is light, it is fast to recover, scar is trickle or without scar.
Above-described embodiment technology design only to illustrate the invention and feature, its object is to allow person skilled in the art
Scholar will appreciate that present disclosure and implement according to this, can not be limited the scope of the invention with this.It is all according to the present invention
Equivalence changes or modification that Spirit Essence is made, all should be included within the scope of the present invention.
Claims (4)
1. a kind of medical surgical knife manufacturing process, it is characterised in that：Including：Blade（1）, bar shaped handle of a knife（2）, the blade
（1）One end be blade（3）, the other end is Plug Division（4）, this Plug Division（4）Upper surface and lower surface have upper concave hole
（41）With lower shrinkage pool（42）, the bar shaped handle of a knife（2）Front end have supply Plug Division（4）Embedded jack（5）；The bar shaped handle of a knife
（2）Front portion be circumferentially provided with upper screwed hole successively（21）, middle screwed hole（22）With lower screwed hole（23）, a lock screw（6）
Screwed hole in screw-in（22）And compress Plug Division（4）, shank of bolt on（7）Screw in upper screwed hole（21）And embedded Plug Division（4）
Upper concave hole（41）It is interior, once shank of bolt（8）Screw in lower screwed hole（23）And embedded Plug Division（4）Lower shrinkage pool（42）It is interior；Institute
State blade（1）Blade（3）Edge and blade（1）Length direction angle is 70 ~ 80 °, this blade（3）Top has a chamfering oblique
Face（9）, one is used to be enclosed within noose on hand（10）It is installed on the bar shaped handle of a knife（2）Rear portion；
The blade（1）Obtained by following steps：
Step one, by 50 ~ 60 parts of ultrafine tungsten carbide, 8 ~ 10 parts of titanium carbide, 6 ~ 8 parts of chromium carbide, 4 ~ 8 parts of molybdenum disilicide, nitridation
Pulverization process is carried out in 7 ~ 9 parts of titanium, 1 ~ 2 part of vanadium carbide and 3 ~ 4 parts of input pulverizers of graphite powder, diameter is formed and is less than 20 microns
Mixed-powder；
Step 2, by forcing press to mixture particle carry out be molded compacting form pressed compact；
Step 3, by pressed compact placement sintering furnace be sintered to form blade blank, comprise the following steps that：
Step 3-1,260 DEG C are first warming up to, then with 4 ~ 6 DEG C per hour of ramp to 500 DEG C, are incubated 1 ~ 2 hour, this rank
Duan Caiyong vacuum conditions are sintered；
Step 3-2, again with 8 ~ 12 DEG C per hour of ramp to 1260 DEG C, be incubated 1 ~ 2 hour, this stage atmosphere be argon gas and
The mixed gas that nitrogen is formed, sintering pressure now is 6Mpa；
Step 3-3, again with 2 ~ 4 DEG C per hour of ramp to 1380 DEG C, be incubated 1 ~ 2 hour, this stage atmosphere be argon gas, this
When sintering pressure be 4Mpa；
Step 3-4, along with the furnace cooling；
Step 4, fine grinding is carried out to blade blank, load opens cutting edge of a knife or a sword and grinding process forms preliminary blade；
Step 5, the preliminary blade of step 4 is carried out liquid nitrogen deep process so as to obtain the blade（1）.
2. medical surgical knife manufacturing process according to claim 1, it is characterised in that：The bar shaped handle of a knife（2）Cut
Face is circle.
3. medical surgical knife manufacturing process according to claim 1, it is characterised in that：The blade（1）Blade（3）
Edge and blade（1）Length direction angle is 75 ° or 78 °.
4. medical surgical knife manufacturing process according to claim 1, it is characterised in that：The subzero treatment of the step 4
Temperature be less than subzero 80 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611204112.4A CN106618682A (en) | 2016-12-23 | 2016-12-23 | Manufacturing process for medical scalpel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611204112.4A CN106618682A (en) | 2016-12-23 | 2016-12-23 | Manufacturing process for medical scalpel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106618682A true CN106618682A (en) | 2017-05-10 |
Family
ID=58826918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611204112.4A Pending CN106618682A (en) | 2016-12-23 | 2016-12-23 | Manufacturing process for medical scalpel |
Country Status (1)
| Country | Link |
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| CN (1) | CN106618682A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107932399A (en) * | 2017-12-15 | 2018-04-20 | 苏州沸迩灵精密制造有限公司 | A kind of long-life cutter for receiver |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003078091A1 (en) * | 2002-03-11 | 2003-09-25 | Becton, Dickinson And Company | System and method for the manufacture of surgical blades |
| JP2011245317A (en) * | 2011-07-01 | 2011-12-08 | Manii Kk | Medical knife |
| CN204106138U (en) * | 2014-10-29 | 2015-01-21 | 王浩 | A kind of Cardiological scalpel |
| CN104400080A (en) * | 2014-09-23 | 2015-03-11 | 宁波市荣科迈特数控刀具有限公司 | Deep hole drill |
| CN105236985A (en) * | 2015-08-25 | 2016-01-13 | 苏州睿智同策广告有限公司 | Ceramic cutter material and preparation method therefor |
| CN105476695A (en) * | 2015-12-03 | 2016-04-13 | 王蕾 | Ceramic alloy self-cleaned scalpel |
| CN205339077U (en) * | 2016-01-26 | 2016-06-29 | 丁敏勇 | Surgical knife |
-
2016
- 2016-12-23 CN CN201611204112.4A patent/CN106618682A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003078091A1 (en) * | 2002-03-11 | 2003-09-25 | Becton, Dickinson And Company | System and method for the manufacture of surgical blades |
| JP2011245317A (en) * | 2011-07-01 | 2011-12-08 | Manii Kk | Medical knife |
| CN104400080A (en) * | 2014-09-23 | 2015-03-11 | 宁波市荣科迈特数控刀具有限公司 | Deep hole drill |
| CN204106138U (en) * | 2014-10-29 | 2015-01-21 | 王浩 | A kind of Cardiological scalpel |
| CN105236985A (en) * | 2015-08-25 | 2016-01-13 | 苏州睿智同策广告有限公司 | Ceramic cutter material and preparation method therefor |
| CN105476695A (en) * | 2015-12-03 | 2016-04-13 | 王蕾 | Ceramic alloy self-cleaned scalpel |
| CN205339077U (en) * | 2016-01-26 | 2016-06-29 | 丁敏勇 | Surgical knife |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107932399A (en) * | 2017-12-15 | 2018-04-20 | 苏州沸迩灵精密制造有限公司 | A kind of long-life cutter for receiver |
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Application publication date: 20170510 |