CN207693621U - The endless knife of circular staplers - Google Patents

Abstract

The utility model is related to medical instruments fields, disclose a kind of endless knife of circular staplers include annular nail bin, the resist-nailed seat that offsets with annular nail bin, endless knife is equipped in nail bin, when the nail bin clamps tissue progress operation stitching with the resist-nailed seat, the endless knife cuts tissue, the endless knife is the endless knife of declivous cutting edge, and the cutting edge of the endless knife carries out circumference cutting by peak to minimum point.The cutting edge of endless knife is arranged to declivous cutting edge by the utility model, in this way in entire cutting process, cutter are always point contact state with tissue to be cut, the feel especially performed the operation when to more plump tissue into surgical cut is significantly improved, the process cutting force entirely cut is evenly dispersed, and for principle as scissors, cutting effect is good, it is more laborsaving simultaneously, more easily more smoothly complete operation when surgeon being made to perform the operation using the instrument.

Description

The endless knife of circular staplers

Technical field

The utility model is related to medical instruments fields, and in particular to a kind of endless knife of circular staplers.

Background technology

The circular staplers product produced in industry at present, structure and principle are that titanium is bound in annular nail bin 1 ', Annular push broach 2 ' is placed in nail bin 1 ', nail bin 1 ' clamps tissue with resist-nailed seat 3 ', when depressing handle, passes through machine internal Transmission mechanism pushes titanium nail by tissue and acts on resist-nailed seat 3 ', and titanium nail is curled into B in the groove of resist-nailed seat 3 ' Shape sutures interior tissue at the annular of nail bin 1 ', while pushing annular push broach 2 ' by inboard excision of the lesion, while complete It is acted at suturing and cutting two（As shown in Figure 1）.Existing apparatus clamps tissue in nail bin 1 ' and resist-nailed seat 3 ' and carries out hand Art suture when, when annular push broach 2 ' is along plane cutting, due to 2 ' cutting edge of annular push broach be plane, so cutting when cutting edge with Tissue circumferencial direction contacts simultaneously, and such forced area is big, and cutting force needs are very big, in addition suffered by suturing nail bending forming Resistance, doctor using the instrument carry out surgical operation when, feel is heavier.Therefore, the prior art need to be improved.

Utility model content

To overcome the defects of present in the prior art, a kind of endless knife of circular staplers is now provided, makes entirely to shear Process is always point contact, and cutting effect is good, while more laborsaving.

The utility model provides a kind of endless knife of circular staplers, including annular nail bin, offsets with annular nail bin Resist-nailed seat, nail bin is interior to be equipped with endless knife, when the nail bin clamps tissue progress operation stitching with the resist-nailed seat, the ring Shape knife cuts tissue, and the endless knife is the endless knife of declivous cutting edge, and the cutting edge of the endless knife is by peak to minimum Point carries out circumference cutting.

In terms of existing technologies, the cutting edge of endless knife is arranged to declivous cutting edge by the utility model, in this way entire In cutting process, cutter are always point contact state with tissue to be cut, especially to more plump tissue into operation The feel performed the operation when cutting is significantly improved, and the process cutting force entirely cut is evenly dispersed, and principle is such as scissors one Sample, cutting effect is good, while more laborsaving, and more easily behaviour is more smoothly completed when surgeon being made to perform the operation using the instrument Make.

Further, be equipped with transmission mechanism in the handle of the endless knife, the endless knife by the transmission mechanism to Upper promotion carries out circumference cutting.Convenient for controlling the cutting speed of endless knife, endless knife can be made uniformly to be cut to tissue.

Description of the drawings

Fig. 1 is the structural schematic diagram of prior art endless knife；

Fig. 2 is overall structure diagram of the endless knife of the utility model circular staplers when starting cutting；

Fig. 3 is the overall structure diagram of the endless knife of the utility model circular staplers after dicing.

Specific implementation mode

In order to which so that utility model is realized technological means, creation feature, reached purpose and effect are easy to understand, below In conjunction with attached drawing, the utility model is expanded on further.

The endless knife of a kind of circular staplers of the utility model, as shown in Fig. 2, including annular nail bin 1 and annular nail bin 1 resist-nailed seat 2 to offset, resist-nailed seat 2 is interior to be equipped with cavity 3, and endless knife 4 is arranged in the cavity 3, and endless knife 4 is declivous cutting edge 41 Endless knife 4, one end handle of endless knife 4 is interior to be equipped with transmission mechanism, and nail bin 1 clamps tissue with resist-nailed seat 2 and carries out operation seam When conjunction, endless knife 4 is pushed up by transmission mechanism and carries out circumference cutting to tissue, and the declivous cutting edge 41 of endless knife 4 is by peak Circumference cutting is carried out to minimum point.

When in use, in conjunction with shown in Fig. 3, endless knife 4 passes through internal drive mechanism urges under the action of handle applied force It moves upwards, tissue therein will be sandwiched in touching resist-nailed seat 2 first by the peak of declivous cutting edge 41 and starts to cut, then It touches resist-nailed seat 2 successively from high to low, completes the cutting of whole circumferencial directions, until cutting is fully completed when minimum point, organize It is completely severed separation.

The endless knife 4 of the utility model setting make to operate in surgical procedure it is more smooth easily, existing endless knife 4 relatively Design, the feel especially performed the operation when to more plump tissue into surgical cut are significantly improved, entirely cut through Shearing force in journey is uniformly disperseed, and for principle as scissors, it is always point contact to make entire shear history, cutting It works well, while more laborsaving.

The specific embodiment of utility model is described above.It is to be appreciated that utility model is not limited to Above-mentioned particular implementation, wherein the equipment and structure be not described in detail to the greatest extent are construed as being given with the common mode in this field To implement；Those skilled in the art can make various deformations or amendments and make within the scope of the claims several simply to push away It drills, deform or replaces, this has no effect on the substantive content of utility model.

Claims (2)

1. a kind of endless knife of circular staplers, including annular nail bin, the resist-nailed seat that offsets with annular nail bin, ring is equipped in nail bin Shape knife, when the nail bin clamps tissue progress operation stitching with the resist-nailed seat, the endless knife cuts tissue, It is characterized in that：The endless knife is the endless knife of declivous cutting edge, and the cutting edge of the endless knife is justified by peak to minimum point Week cutting.

2. the endless knife of circular staplers as described in claim 1, it is characterised in that：It is equipped with and passes in the handle of the endless knife Motivation structure, the endless knife are pushed up by the transmission mechanism and carry out circumference cutting.