CN103961146A

CN103961146A - Endoscope suture cutter

Info

Publication number: CN103961146A
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: 2014-08-06
Anticipated expiration: 2034-05-06
Also published as: CN103961146B

Abstract

The invention relates to the field of medical apparatus and instruments, in particular to an endoscope suture cutter. The endoscope suture cutter comprises an outer casing pipe and an inner core. The outer casing pipe covers the inner core. The outer casing pipe and the inner core can relatively move. The inner core is a strip body. The inner core is provided with a cutting end. The edge of one side of the cutting end is recessed inwards towards the edge of the other side to form a first blade. The cutting edge of the first blade faces the inner side of the outer casing pipe. A second blade is arranged in the position, corresponding to the tail end of the cutting end, of the outer casing pipe. The cutting edge of the second blade faces the outer side of the outer casing pipe. Compared with original scissor type suture scissors, the endoscope suture cutter is simpler in structure, the two blades of which the cutting edges are oppositely arranged are used for cutting sutures in a direct inlet direct outlet cutting mode, it is avoided that force is decomposed in the inclined stretching position in the scissor type cutting mode, the endoscope suture cutter is easier to control, cutting operation is easy to control, and counter cutting force at the axis is larger.

Description

Scope suture sickle

Technical field

The present invention relates to for the trimming apparatus under the soft endoscope of Minimally Invasive Surgery, relate in particular to a kind of scope suture sickle.

Background technology

Existing soft mirror, is mainly used for endoscope, as alimentary tract endoscopes such as electronic gastroscope, electronics intestinal mirror, duodenoscopies.The more rigid mirror of soft mirror is long, operates meticulously, is difficult to control, and duct is less, and the trimming tool not have, along with the various Minimally Invasive Surgerys development under soft endoscope, easy, the effective trimming apparatus of needs one.Half scissor line is before cut, and because being soft, repeatedly decomposing appears in shearing conduction, and cutting force is very little, and the situation that suture can't cut, often appears in cutting difficulty, causes the insignificant prolongation of operating time, consumes the energy of surgical doctor.

Summary of the invention

Technical problem to be solved by this invention is to cut the difficult problem of trimming in endoscopic technic for scissor line of the prior art, and a kind of scope suture sickle is provided, easily operation.

In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of scope suture sickle, comprise trocar sheath and inner core, described trocar sheath covers at the outside of described inner core, between trocar sheath and inner core, can carry out relative motion, inner core is shoestring, inner core has a cut end, one lateral edges of described cut end becomes the first blade to concave relief in opposite side edge, the cutting edge of described the first blade is the inside of sleeve pipe outward, on trocar sheath, the end of corresponding cut end is provided with the second blade, and the cutting edge of described the second blade is the outside of sleeve pipe outward.

Wherein, described inner core also has a manipulation end, and described manipulation end is connected with one handle, and described handle is fixed on described trocar sheath slidably.

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

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

Beneficial effect of the present invention is: compared with cutting with scissor line in the past, structure of the present invention is simpler, two groups of blades employings that arrange in opposite directions by cutting edge are directly entered the cutting mode directly going out suture are cut, overcome the cutting mode that scissor line cuts and tiltedly stretched place to cutting force resolution, more be easy to control and cutting operation, axle center place larger to shear force, more easily cuts off suture.

Brief description of the drawings

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

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

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

Main element symbol description:

10, trocar sheath; 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, hands handle; 26, round end.

Detailed description of the invention

By describing technology contents of the present invention, structural feature in detail, being realized object and effect, below in conjunction with embodiment and coordinate accompanying drawing to be explained in detail.

The design of most critical of the present invention is: at the end of inner core and trocar sheath, the blade that a pair of cutting edge arranges is in opposite directions set respectively, can the cutting of directly entering directly to go out formula and operated suture with respect to inner core by inner sleeve, in the time carrying out endoscopic surgery, operate very convenient.

A kind of scope suture sickle that refers to Fig. 1 embodiments of the invention, comprises trocar sheath 10 and inner core 20, and described trocar sheath 10 covers at the outside of described inner core 20, between trocar sheath 10 and inner core 20, can carry out relative motion.Inner core 20 is shoestring, and it has a cut end 21, and a lateral edges of described cut end 21 becomes the first blade 22 to concave relief in opposite side edge, and on trocar sheath 10, the end of corresponding cut end 21 is provided with the second blade 11.

Consult Fig. 2 and Fig. 3, the cutting edge 23 of the first blade inside of sleeve pipe 10 outward, the cutting edge 12 of the second blade outside of sleeve pipe 10 outward.

The cutting edge 23 of the first blade can be used for holding and fixing suture, then moves trocar sheath 10 according to the direction shown in the arrow in Fig. 2 and Fig. 3, thereby cutting edge 23 synergism of the cutting edge 12 of the second blade on trocar sheath 10 and the first blade cut off suture.

From foregoing description, the beneficial effect of the present embodiment is: to cut structure compared simpler with scissor line in the past, two groups of blades employings that arrange in opposite directions by cutting edge are directly entered the cutting mode directly going out suture are cut, overcome the cutting mode that scissor line cuts and tiltedly stretched place to cutting force resolution, more be easy to control and cutting operation, axle center place larger to shear force, more easily cuts off suture.

Further, refer to Fig. 1, as the optimization to above-mentioned embodiment, described inner core 20 also has a manipulation end 24, described manipulation end 24 is connected with one handle 25, described handle 25 is fixed on described trocar sheath 10 slidably, so, just convenient for the control relatively moving between trocar sheath 10 and inner core 20.

Further, refer to Fig. 2, as the optimization to above-mentioned embodiment, the shape of the cutting edge 23 of described the first blade is made up of multistage curve, described curve towards the extension degree of depth of the end face of described cut end 21 be greater than head and the tail two sections of curves head and the tail two-end-point between straight length.Specifically, in Fig. 2, the camber line ab of the cutting edge 23 of the first blade is made up of multistage curve, and a point and b point are respectively head-end and the tail points of two sections of curves of head and the tail, and the distance between summit o and the straight line ab of camber line ab is greater than the length of straight line ab.Adopt the cutting edge setting of such great depth can conveniently hold suture, so as not to when cutting suture escape, and the different suture of applicable multiple diameter.In practical operation, the channel width that suture enters in the first blade 22 is the length of straight line ac, and straight line ac can arrange widelyr, so just more easily captures suture.

Particularly, a point place is the end points with semicircle fillet of not being with sword, and when fillet being set at a point place and can preventing hook line, a point causes tissue injury because of false touch tissue.

In addition, described camber line bc does not have cutting edge, form, and part between camber line bc does not have cutting force, and cutting edge need not be set because cutting force is that the cutting edge 23 of the first blade between camber line ab and the cutting edge of the second blade 12 is common.

Further, as the optimization to above-mentioned embodiment, the end face of described cut end 21 is provided with semicircular round end 26, the order that round end 26 is set is to prevent that thereby the end face of cut end 21 in the time of trimming from penetrating tissue and causing tissue injury, and existing scissor suture wire scissors is in operation often because careless manipulation causes tissue injury, this programme can address this problem effectively.

In sum, compared with cutting with scissor line in the past, structure of the present invention is simpler, two groups of blades employings that arrange in opposite directions by cutting edge are directly entered the cutting mode directly going out suture are cut, overcome the cutting mode that scissor line cuts and tiltedly stretched place to cutting force resolution, more be easy to control and cutting operation, axle center place larger to shear force, more easily cuts off suture.

The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes description of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.

Claims

1. a scope suture sickle, comprise trocar sheath and inner core, described trocar sheath covers at the outside of described inner core, between trocar sheath and inner core, can carry out relative motion, it is characterized in that, inner core is shoestring, inner core has a cut end, one lateral edges of described cut end becomes the first blade to concave relief in opposite side edge, the cutting edge of described the first blade is the inside of sleeve pipe outward, on trocar sheath, the end of corresponding cut end is provided with the second blade, and the cutting edge of described the second blade is the outside of sleeve pipe outward.

2. scope suture sickle according to claim 1, is characterized in that, described inner core also has a manipulation end, and described manipulation end is connected with one handle, and described handle is fixed on described trocar sheath slidably.

3. scope suture sickle according to claim 1, it is characterized in that, the shape of the cutting edge of described the first blade is made up of multistage curve, described curve towards the extension degree of depth of the end face of described cut end be greater than head and the tail two sections of curves head and the tail two-end-point between straight length.

4. scope suture sickle according to claim 1, is characterized in that, the end face of described cut end is provided with semicircular round end.