CN208926525U - A kind of microsurgery cutting knife and blade - Google Patents

Abstract

The utility model discloses a kind of microsurgery cutting knife and blades, including front blade and tail portion blade fixed part, front blade and tail portion blade fixed part are integrated metalwork, the back of blade and blade fixed part is in flat, thickness a is 0.2mm-0.5mm, blade includes point of a knife and cutting edge, point of a knife is at an acute angle, knife-edge leading end is curved knife cutting edge, and straight edge is gradually transitioned by curved blade mouth from point of a knife, the length b on side where knife spine corresponding to curved knife cutting edge is 0.5mm-1mm, the length c on side where knife spine corresponding to straight edge is 1mm-3mm, blade is put the first edge on a knife or a pair of scissors using single side, and where the corresponding knife spine of curved knife cutting edge in sword on straight edge between angle α be 5 degree ~ 10 degree, blade puts the first edge on a knife or a pair of scissors the angle β between abradant surface and opposite face It is 15 degree ~ 20 degree.The cutting knife is used under the microscope, there is preferably visuality, and the puncture force by testing point of a knife is less than 0.4N, can puncture easily into soft tissue, guarantees that puncture point orientation accurately chooses going on smoothly for formula cutting with counter.

Description

A kind of microsurgery cutting knife and blade

Technical field

The utility model relates to medical instrument, in particular to a kind of microsurgery cutting knife and blade.

Background technique

Currently, microsurgical technique development is very fast, each profession of many subjects of performing the operation all successively uses microsurgical technique The delicate procedure of the professional range is carried out, so that surgical effect be continuously improved.Especially the second toe transplanting of anastomosis of blood vessel is with before Arm flap etc. is all that China initiates technology, and no matter on surgical quality and quantity, China occupies first place in the world always.Other professions, It such as microneurosurgery and microlymphatic surgery, also have developed rapidly, and with the surgical characteristic of oneself.

As what each department's micrurgy was carried out increases, the increasing of difficulty, in operation there is an urgent need to use meet it is micro- outer The scalpel (dissector) that section's delicate procedure requires.In particular for the lateral opening hole of minute blood vessel, clinic is still being used at present According to the coventional scalpel of national YY 0174-2005 standard production, the width of minimum dimension is 6.5mm, length 42mm, Seem especially big under magnifying glass, and reuse the sharpness for influencing scalpel, is not suitable for making under microsurgery With especially to the cutting of delicate tissues, too long blade can not be used in a small range；Wider and longer cutter head blocks view Line be easy to cause blood vessel, nerve, vasculolymphatic cutting port irregular, influence end-port coincide and side-port coincide at Power.

Summary of the invention

The purpose of this utility model is to provide a kind of microsurgery cutting knife and blades, by the blade side of putting the first edge on a knife or a pair of scissors Formula, knife spine design and the different settings of point of a knife angle adapt it to the surgical procedure under microscope.

To achieve the goals above, the technical solution of the utility model is:

A kind of microsurgery cuts open cutter blade, including front blade and tail portion blade fixed part, the front blade Metalwork is integrated with tail portion blade fixed part, and the back of the blade and blade fixed part is in flat, with a thickness of 0.2mm- 0.5mm, blade include point of a knife and cutting edge, and the point of a knife is at an acute angle, the knife-edge leading end be curved blade, and from point of a knife gradually by Curved blade mouth is transitioned into straight edge, and the length b on side where knife spine corresponding to curved knife cutting edge is 0.5mm-1mm, puts down The length c on side is 1mm-3mm where knife spine corresponding to straight knife cutting edge, and the blade is put the first edge on a knife or a pair of scissors using single side, and curved knife cutting edge Where corresponding knife spine in sword on straight edge between angle α be 5 degree ~ 10 degree, blade put the first edge on a knife or a pair of scissors abradant surface with relatively Angle β between face is 15 degree ~ 20 degree.

Further, the angle γ of the point of a knife is less than 30 degree.

Further, the radius of the radian of the curved knife cutting edge is 3mm ~ 5mm.

Further, the angle between where the corresponding knife spine of curved knife cutting edge in sword on straight edge is 7 degree.

Further, blade put the first edge on a knife or a pair of scissors the angle β between abradant surface and opposite face be 18 degree.

Further, the material of the blade is stainless steel plate.

The another aspect of the utility model:

A kind of microsurgery cutting knife is equipped with above-mentioned blade on the cutting knife, and the blade passes through tail portion Blade fixed part is plugged into the corresponding slot position in cutting knife hilt front end, forms a fixed connection, blade exposed length be 2mm ~ The front end of 3mm, the hilt rear end and knife handle is connected together, and the blade, hilt are located along the same line, and is in 0 with knife handle Spend ~ 35 degree of angles.

Compared with prior art, the utility model has the beneficial effects that

1, microsurgery described in the utility model cuts open cutter blade, is made using relatively thin stainless steel materials, and Using the orthogonal grinding technique of low-angle single side, under the premise of reducing twin grinding counter blade injury of mouth probability, it is easier to obtain high The cutting edge of sharpness, to realize the cutting force of 0.4N, guarantees the straight and section of notch in conjunction with the design of front end acute angle point of a knife It is smooth；

2, microsurgery described in the utility model cuts open cutter blade, and the back of the blade and blade fixed part is in Flat, it is upper choose cutting surface texture or lumen side wall when, it can be achieved that as far as possible close to tissue surface, point of a knife can be pressed into needs and cut open The position cut, to realize precise location cutting (as shown in Figure 2)；And existing scalpel is because its structure and size etc. limit, it is possible It will appear multiple cutting, and cutting will cause the out-of-flatness of notch repeatedly, influences match result and even injures deep tissues；

3, microsurgery described in the utility model cuts open cutter blade, and the knife-edge leading end is curved knife cutting edge, and Straight edge is gradually transitioned by curved blade mouth from point of a knife, is chosen on carrying out the incipient stage of formula cutting, curved edge mouth Tissue is first contacted, the tissue thickness and form notch vertical up and down that curved knife cutting edge energy relative reduction heads on also just reduce User firmly, make movement range it is smaller, operation it is more acurrate, be completed when cutting is transitioned into straight edge to cavity wall Puncture, edge has been in below cavity wall, to have completed to provoke work at this time, straight edge can guarantee notch when choosing It is smooth with notch section in the straight direction；

4, microsurgery cutting knife described in the utility model, knife handle can be in 0 degree ~ 35 degree angles, this makes aobvious The utility model cutting knife is used under micro mirror, has preferably visual, and visual angle is convenient for observation and slitting operation when use；

5, microsurgery cutting knife described in the utility model, it is 2mm ~ 3mm that blade, which limits safety depth, compared to general The logical wide 6.5mm of scalpel, it is easier to grasp depth of cut；

6, microsurgery cutting knife described in the utility model, from point of a knife to hilt, width is gradually broadening, curved knife Where the corresponding knife spine of cutting edge in sword on straight edge between angle α be 5 degree ~ 10 degree, first is that in order to guarantee point of a knife Angle be lower than 30 °, entire shape is conducive to push to puncture and enters tissue and above choose cutting detachment tissue；Second is that there is foot at hilt position Enough width guarantee to be connected with enough bonding strengths with knife handle when using.

The utility model is described in detail with reference to the accompanying drawings and examples.

Detailed description of the invention

Fig. 1 is the utility model cutting knife blade structure axis side schematic diagram；

Fig. 2 is schematic diagram when the utility model cutting knife point of a knife carries out slitting operation；

Fig. 3 is the utility model cutting knife blade side structural schematic diagram；

Fig. 4 is the utility model cutting knife blade structure floor map；

Fig. 5 is cutting knife structural schematic diagram described in the utility model；

Fig. 6 is the cutter handle structure schematic diagram；

Fig. 7 is straight knife handle structure main view；

Fig. 8 is straight knife handle structure top view；

Fig. 9 is tulwar handle structure top view.

Specific embodiment

Embodiment 1

As Figure 1-Figure 4, it present embodiments provides a kind of microsurgery and cuts open cutter blade, operate under the microscope It uses, therefore in addition to the size to knife wants restricted, while structure will consider how before avoiding block vision, the blade from including Portion's blade 1 and tail portion blade fixed part 2, the front blade and tail portion blade fixed part are integrated stainless steel part, blade and knife The back of piece fixed part be in flat, blade thickness a be 0.2mm-0.5mm, preferably 0.2mm, it is upper choose cutting surface texture or When lumen side wall, it can be achieved that as far as possible close to tissue surface, point of a knife can be pressed into the position 5 for needing cutting, to realize precise location Cutting；Blade includes point of a knife 101 and cutting edge, to realize the anti-slitting operation for choosing formula, point of a knife it is sharp particularly significant, it is ensured that wear It lunges tissue while the biggish deformation of tissue surface will not be generated, therefore the point of a knife is designed as in 30 degree of acute angle gammas below, institute Stating knife-edge leading end is curved knife cutting edge 102, and arc radius R is 3mm ~ 5mm, preferably 4mm, and from point of a knife gradually by curved blade Mouth 102 is transitioned into straight edge 103, and the length b on side where knife spine corresponding to curved knife cutting edge is 0.5mm-1mm, straight The length c on side is 1mm-3mm where knife spine corresponding to edge, and the incipient stage of formula cutting, curved blade are chosen on carrying out Mouthful can relative reduction head on tissue thickness, also just reduce user firmly, make movement range it is smaller, operation it is more acurrate； It carries out single side using the orthogonal grinding technique of single side at the straight edge to put the first edge on a knife or a pair of scissors, and side where the corresponding knife spine of curved knife cutting edge It is 5 degree ~ 10 degree with the angle α on straight edge between sword side, preferably 7 degree, blade puts the first edge on a knife or a pair of scissors between abradant surface and opposite face Angle β is 15 degree ~ 20 degree, and preferably 18 degree, due to using the relatively thin stainless steel plate of 0.2mm, low-angle single side grinding in addition guarantees The realization of higher sharpness.

Embodiment 2

As shown in Figure 5-Figure 8, a kind of microsurgery cutting knife is present embodiments provided, is equipped on the cutting knife Blade described in embodiment 1, therefore, the content of embodiment 1 are suitable for the present embodiment, and the blade passes through tail portion blade fixed part It is plugged into the 3 corresponding slot position in front end of cutting knife hilt, is formed a fixed connection, blade exposed length is 3mm, after the hilt It holds and is connected together with the front end of knife handle 4, the blade, hilt and knife handle are respectively positioned on same straight line.

When carrying out the slitting operation of privileged sites, if department of cardiac surgery carries out the coronary artery bypass grafting of coronary heart disease, coronary artery it is free and After side-wall hole, the cutting knife of disposable cut-open device, blade and hilt grafting, company is engaged with tulwar handle as shown in Figure 9 It connects, then safer to the progress of the blood vessel at far-reaching position also can more easily operate.Wherein, the blade, hilt is still kept to be located at It on same straight line, and is in 35 degree of angles with knife handle.

Using cutting knife described in above-mentioned the present embodiment in tissue surface cutting, especially lumen side is open, blade Cut more downward than blade of flipping out has bigger safety because on will not injure following deep tissues when choosing.In blood When pipe side-port coincide, wherein a blood vessel needs to go out the side port of certain length in side axial cutting, for another blood vessel Port coincide.The cutting quality of side port is particularly significant, and to cut smooth notch will have outstanding requirement to knife.

Equally, blood vessel, nerve, vasculolymphatic port cutting are neatly also particularly significant, are related to end-port and coincide and side- The identical success rate in port.All there is the spy for not injuring lower covering weave with the surface layer for choosing the lesser lumen of formula dialysis and tissue Point.Traditional operation knife cannot effectively play above-mentioned function, and the present embodiment design is solving the problems, such as this.

Realize it is counter choose formula (above choosing formula) cutting, point of a knife it is sharp particularly significant, it is ensured that puncture into tissue without producing The moderate finite deformation of raw tissue surface.It is designed using acute angle point of a knife, point of a knife angle γ is less than 30 °, by the puncture for testing point of a knife Power is less than 0.4N, can puncture easily into soft tissue, guarantees that puncture point orientation accurately chooses going on smoothly for formula cutting with counter.

Cambered design is used in point of a knife cutting edge portion, the size of point of a knife part arc will be suitable for crossing conference to reduce puncture force, It is too small to be not easy to be formed notch vertical up and down when puncturing.It is 4mm by testing selected arc radius R, both ensure that nose angle Spending γ less than 30 ° has enough puncture forces, in turn ensures that puncture initial stage forms notch vertical up and down, suitable to choose on subsequent Benefit is completed.Point of a knife cutting edge portion is gradually transitioned into straight edge by curved blade mouth from point of a knife.In the upper beginning for choosing formula cutting Stage, curved knife cutting edge first contact tissue.The tissue thickness that curved knife cutting edge energy relative reduction heads on, also just reduces user Firmly, make movement it is lighter, more acurrate.When cutting is transitioned into straight edge, it is in provokes work at this time, straight edge It ensure that notch is smooth with notch in the straight direction.

Claims (7)

1. a kind of microsurgery cuts open cutter blade, including front blade (1) and tail portion blade fixed part (2), the front Blade and tail portion blade fixed part are integrated metalwork, which is characterized in that the back of blade and blade fixed part is in flat, knife Piece thickness (a) is 0.2mm-0.5mm, and blade includes point of a knife (101) and cutting edge, and the point of a knife is at an acute angle, the front end of the blade For curved knife cutting edge (102), and gradually it is transitioned into straight edge (103) by curved blade mouth from point of a knife, curved knife cutting edge institute The length (b) on side where corresponding knife spine is 0.5mm-1mm, and the length (c) on side is where knife spine corresponding to straight edge 1mm-3mm, the blade are put the first edge on a knife or a pair of scissors using single side, and where the corresponding knife spine of curved knife cutting edge while with sword on straight edge it Between angle α be 5 degree ~ 10 degree, blade put the first edge on a knife or a pair of scissors the angle β between abradant surface and opposite face be 15 degree ~ 20 degree.

2. microsurgery according to claim 1 cuts open cutter blade, which is characterized in that the angle γ of the point of a knife is small In 30 degree.

3. microsurgery according to claim 1 cuts open cutter blade, which is characterized in that the arc of the curved knife cutting edge Spending radius (R) is 3mm ~ 5mm.

4. microsurgery according to claim 1 cuts open cutter blade, which is characterized in that the corresponding knife of curved knife cutting edge Back where in sword on straight edge between angle be 7 degree.

5. microsurgery according to claim 1 cuts open cutter blade, which is characterized in that blade puts the first edge on a knife or a pair of scissors abradant surface and phase Angle β between opposite is 18 degree.

6. microsurgery according to claim 1-5 cuts open cutter blade, which is characterized in that the blade Material is stainless steel plate.

7. a kind of microsurgery cutting knife, which is characterized in that installation is just like any one of claim 1-6 on the cutting knife The blade, the blade are plugged into the corresponding slot in cutting knife hilt (3) front end by tail portion blade fixed part (2) (301) position forms a fixed connection, and blade exposed length is 2mm ~ 3mm, and the hilt rear end engages with the front end of knife handle (4) Connection, the blade, hilt are located along the same line, and are in 0 degree ~ 35 degree angles with knife handle.