CN103961146B

CN103961146B - Scope suture cutter

Info

Publication number: CN103961146B
Application number: CN201410187916.2A
Authority: CN
Inventors: 李达周; 王雯
Original assignee: Individual
Current assignee: 900th Hospital of the Joint Logistics Support Force of PLA
Priority date: 2014-05-06
Filing date: 2014-05-06
Publication date: 2016-08-24
Anticipated expiration: 2034-05-06
Also published as: CN103961146A

Abstract

The present invention relates to medical instruments field, for a kind of scope suture cutter, including outer tube and inner core, described outer tube covers at the outside of described inner core, relative motion can be carried out between outer tube and inner core, inner core is shoestring, inner core has a cut end, one lateral edges of described cut end concave relief in opposite side edge becomes the first blade, the cutting edge of described first blade is towards the inside of outer tube, on outer tube, the end of corresponding cut end is provided with the second blade, and the cutting edge of described second blade is towards the outside of outer tube.Compared with cutting with conventional scissor line, the structure of the present invention is simpler, the two groups of blades being oppositely arranged by cutting edge use the straight cutting mode directly gone out to cut suture, overcome scissor cutting mode and tiltedly stretch place to force resolution, more easily control and cutting operation, bigger to shear force at axle center.

Description

Scope suture cutter

Technical field

The present invention relates to the trimming apparatus under the soft endoscope of Minimally Invasive Surgery, particularly relate to a kind of scope Suture cutter.

Background technology

Existing soft mirror, is mainly used for endoscope, such as electronic gastroscope, electronics intestines mirror, ERCP Deng alimentary tract endoscope.The more rigid mirror of soft mirror is long, and operation is fine, it is difficult to control, and duct is less, does not has The trimming tool having had, along with the various Minimally Invasive Surgeries under soft endoscope develop, needs a kind of simplicity, has The trimming apparatus of effect.Half scissor line before is cut, and because being soft, repeatedly decomposing occurs in shearing conduction, Cutting force is the least, cutting difficulty, the situation that suture can't cut often occurs, causes operating time insignificant Extend, consume the energy of surgical doctor.

Summary of the invention

The technical problem to be solved is to cut in endoscopic technic for scissor line of the prior art The problem that trimming is difficult to, it is provided that a kind of scope suture cutter, easily operates.

In order to solve above-mentioned technical problem, the technical solution used in the present invention is: a kind of scope suture cutter, Including outer tube and inner core, described outer tube covers at the outside of described inner core, can between outer tube and inner core Carrying out relative motion, inner core is shoestring, and inner core has a cut end, a lateral edges of described cut end to In opposite side edge, concave relief becomes the first blade, and the cutting edge of described first blade is towards the inside of outer tube, outward On sleeve pipe, the end of corresponding cut end is provided with the second blade, and the cutting edge of described second blade is towards outer tube Outside.

Wherein, described inner core also has a manipulation end, and described manipulation end connects one handle, and described handle can It is fixed on slidably on described outer tube.

Wherein, the shape of the cutting edge of described first blade is made up of multistage curve, and described curve is cut towards described The extension degree of depth of the end face of cut node is more than the straight length between the head and the tail two-end-point of two sections of curves of head and the tail.

Wherein, the end face of described cut end is provided with semicircular round end.

The beneficial effects of the present invention is: compared with cutting with conventional scissor line, the structure of the present invention is simpler Single, the two groups of blades being oppositely arranged by cutting edge use the straight cutting mode directly gone out to cut suture, Overcome the cutting mode that scissor line cuts and tiltedly stretch place to cutting force resolution, more easily control and cut behaviour Make, bigger to shear force at axle center, it is easier to cut off suture.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the scope suture cutter of the embodiment of the present invention；

Fig. 2 is the partial enlarged drawing in Fig. 1 at A；

Fig. 3 is the top view of Fig. 2.

Main element symbol description:

10, outer tube；11, the second blade；12, the cutting edge of the second blade；

20, inner core；21, cut end；22, the first blade；23, the cutting edge of the first blade；24, manipulation End；25, handle；26, round end.

Detailed description of the invention

By describing the technology contents of the present invention, structural feature in detail, being realized purpose and effect, below in conjunction with Embodiment also coordinates accompanying drawing to be explained in detail.

The design of most critical of the present invention is: the end at inner core and outer tube arranges a pair cutting edge in opposite directions respectively The blade arranged, can directly go out formula by inner sleeve relative to inner core straight and operate the cutting of suture, Operate when carrying out endoscopic surgery very convenient.

Refer to a kind of scope suture cutter of Fig. 1 embodiments of the invention, including outer tube 10 and inner core 20, described outer tube 10 covers at the outside of described inner core 20, can enter between outer tube 10 and inner core 20 Row relative motion.Inner core 20 is shoestring, and it has a cut end 21, a side of described cut end 21 Edge concave relief in opposite side edge becomes the first blade 22, the end of corresponding cut end 21 on outer tube 10 It is provided with the second blade 11.

Refering to Fig. 2 and Fig. 3, the cutting edge 23 of the first blade is towards the inside of outer tube 10, the sword of the second blade Mouth 12 is towards the outside of outer tube 10.

The cutting edge 23 of the first blade can be used for accommodating and fixing suture, then according to the arrow in Fig. 2 and Fig. 3 Outer tube 10 is moved in direction shown in Tou, the cutting edge 12 of the second blade on outer tube 10 and the first blade Cutting edge 23 acts synergistically thus cuts off suture.

Knowable to foregoing description, having the beneficial effects that of the present embodiment: knot compared with cutting with conventional scissor line Structure is simpler, and the two groups of blades being oppositely arranged by cutting edge use the straight cutting mode directly gone out to enter suture Row cutting, overcomes the cutting mode that scissor line cuts and tiltedly stretches place to cutting force resolution, more easily control And cutting operation, bigger to shear force at axle center, it is easier to cut off suture.

Further, referring to Fig. 1, as the optimization to above-mentioned embodiment, described inner core 20 also has One manipulation end 24, described manipulation end 24 connects has one handle 25, described handle 25 to be slidably secured institute State on outer tube 10, so, for the relative movement between outer tube 10 and inner core 20 control just Convenient.

Further, refer to Fig. 2, as the optimization to above-mentioned embodiment, the cutting edge of described first blade The shape of 23 is made up of multistage curve, and described curve is more than towards the extension degree of depth of the end face of described cut end 21 Straight length between the head and the tail two-end-point of two sections of curves from beginning to end.Specifically, the sword of the first blade in Fig. 2 The camber line ab of mouth 23 is made up of multistage curve, and a point and b point are the head-end of two sections of curves of head and the tail respectively And tail point, the length more than straight line ab of the distance between the summit o and straight line ab of camber line ab.Use this The cutting edge of the great depth of sample is arranged can conveniently accommodate suture, in order to avoid suture is escaped during cutting, and be suitable for multiple directly The suture that footpath is different.In practical operation, it is straight line ac that suture enters the channel width in the first blade 22 Length, straight line ac can arrange wider, is thus easier to capture suture.

Specifically, being the end points with semicircle fillet without sword at a point, arranging fillet at a point can prevent Only during hook line, a point causes tissue damage because of false touch tissue.

It addition, described camber line bc does not have cutting edge, owing to cutting force is the sword of the first blade between camber line ab The cutting edge 12 of mouth 23 and the second blade is collectively forming, and the part between camber line bc does not has cutting force, does not has Necessity arranges cutting edge.

Further, as the optimization to above-mentioned embodiment, the end face of described cut end 21 is provided with semicircle Round end 26, the mesh arranging round end 26 is to prevent the end face of cut end 21 when trimming from penetrating tissue Thus cause tissue damage, and existing scissor suture scissors often causes tissue in operation because of careless manipulation Damage, this programme can efficiently solve this problem.

In sum, cut with conventional scissor line compared with, the structure of the present invention is simpler, passes through cutting edge The two groups of blades being oppositely arranged use the straight cutting mode directly gone out to cut suture, overcome scissor The cutting mode that line is cut tiltedly stretch place to cutting force resolution, more easily control and cutting operation, at axle center Bigger to shear force, it is easier to cut off suture.

The foregoing is only embodiments of the invention, not thereby limit the scope of the claims of the present invention, every profit The equivalent structure made by description of the invention and accompanying drawing content or equivalence flow process conversion, or directly or indirectly transport It is used in other relevant technical fields, is the most in like manner included in the scope of patent protection of the present invention.

Claims

1. a scope suture cutter, including outer tube and inner core, described outer tube covers at described inner core Outside, relative motion can be carried out between outer tube and inner core, it is characterised in that inner core is shoestring, interior Core has a cut end, and a lateral edges of described cut end concave relief in opposite side edge becomes the first blade, The cutting edge of described first blade is towards the inside of outer tube, and on outer tube, the end of corresponding cut end is provided with the Two blades, the cutting edge of described second blade is towards the outside of outer tube.

Scope suture cutter the most according to claim 1, it is characterised in that described inner core also has One manipulation end, described manipulation end connects has one handle, described handle to be slidably secured on described outer tube.

Scope suture cutter the most according to claim 1, it is characterised in that described first blade The shape of cutting edge is made up of multistage curve, and described curve is more than towards the extension degree of depth of the end face of described cut end Straight length between the head and the tail two-end-point of two sections of curves from beginning to end.

Scope suture cutter the most according to claim 1, it is characterised in that the end of described cut end Face is provided with semicircular round end.