Tiltable resist-nailed seat and tube type anastomatTechnical field
The present invention relates to technical field of medical instruments, particularly relate to tiltable resist-nailed seat and adopt the tube type anastomat of this resist-nailed seat.
Background technology
The resist-nailed seat of existing tube type anastomat has two kinds of structures, one is resist-nailed seat not tiltable, the maintenance resist-nailed seat state vertical with the device body of stapler is continued after to tissue apposition, like this after sewing up, when device body is organized together with resist-nailed seat taking-up, the edge of resist-nailed seat is easy to process is organized scratch, and the staple easily causing stitching comes off, and is split up previous anastomotic. Another kind of structure is tiltable resist-nailed seat, but tiltable structure is more complicated, tube type anastomat is the apparatus of single use, its effect will be lost after a single use, so the stapler cost of the tiltable resist-nailed seat of this kind of complex structure is higher, increases the weight of the expense burden of patient, it has been not suitable for extensive popularization, and the structure of complexity easily causes instrument failure, add operation risk.
Summary of the invention
It is an object of the present invention to provide a kind of tiltable resist-nailed seat, when the complete disengaging of instrumentation is organized, not easily scrape injured tissue, also not easily make the staple of stitching come off, and structure is simple, minimizing cost, reduces operation risk and patient burden, suitable popularization.
It is a further object of the present invention to provide a kind of tube type anastomat, exit organize time, not easily scrape injured tissue, reduce operation risk and patient burden, suitable promote.
The technical problem that the present invention solves adopts following technical scheme: a kind of tiltable resist-nailed seat, comprises resist-nailed seat assembly and connects post, and the pivotable and described post that is connected of described resist-nailed seat assembly connects; Described resist-nailed seat assembly comprises latch piece, anvil plate, spacing collar, supporting cup and knife washer; The near-end of described anvil plate has offered staged groove, and is provided with spacing collar, supporting cup and knife washer by far-end to near-end is nested successively in staged groove; The far-end of described latch piece is fixed in described anvil plate, the near-end of described latch piece successively through spacing collar, supporting cup, knife washer, and with the described far-end pivot joint being connected post;The articulated section of described connection post and described latch piece can be carried out radial restriction by spacing collar, supporting cup and knife washer, and spacing collar, supporting cup and knife washer can be pressed into the groove depths of anvil plate in the axial direction.
Preferably, described latch piece comprises round base portion and connection section, and described connection section and described round base portion are integrally fixed structure; The near-end of described connection section is provided with two symmetrical flanges, and two flanges offer two symmetrical the first through holes respectively; The far-end of described connection post has offered accommodation passage, and the two side holding passage offers two the 2nd through holes matched with two the first through holes respectively; Described round base portion is fixed in described anvil plate, and symmetrical two flanges of connection section near-end are arranged in described accommodation passage, and is made latch piece by bearing pin through two the first through holes and two the 2nd through holes and be connected the mutual pivot joint of post; And it being provided with torsion spring, described torsion spring curls up on described bearing pin, and one end of described torsion spring is connected to the near-end of described latch piece, and the other end of described torsion spring is connected to the far-end of described connection post;
The far-end of described connection post is provided with and limits projection, and pivotal orientation and the angle of described resist-nailed seat assembly are limited by the described projection that limits.
Preferably, described spacing collar comprises spacing base portion and spacing insertion section; Described spacing base portion is provided with at least one spacing insertion section; The bottom of the staged groove of described anvil plate is provided with the spacing receptacle corresponding with described spacing insertion section, and described spacing receptacle can hold described spacing insertion section.
Preferably, described spacing insertion section is that cylinder far-end is provided with pyramidal projections structure.
Preferably, the bottom surface of the described pyramidal projections structure of described spacing insertion section is slightly larger than the cross section of spacing receptacle.
Preferably, the material of described pyramidal projections structure is the plastic materials such as synthetic resins.
Preferably, described spacing collar comprises spacing base portion and spacing distortion portion; Described spacing base portion is provided with at least one spacing distortion portion; Described spacing distortion portion can be extruded distortion, and the overall axial length of spacing collar is shortened.
Preferably, described spacing collar comprises spacing base portion and spacing distortion portion; Described spacing base portion is provided with at least one spacing distortion portion; Described spacing distortion portion can be extruded distortion, and the overall axial length of spacing collar is shortened.
Preferably, described anvil plate has been offered at least two wash with watercolours and let out hole.
The present invention solves another technical problem and adopts following technical scheme: a kind of tube type anastomat, comprises tiltable resist-nailed seat described above, percussion assembly, transmission assembly and movable hand; The dismountable far-end being connected to described percussion assembly of described resist-nailed seat, the near-end of described percussion assembly is connected with the far-end of described transmission assembly, described free handle is arranged on the near-end of described transmission assembly, and described free handle by transmission assembly start percussion assembly pull the trigger, to realize the inclination of resist-nailed seat.
The useful effect that the present invention has is as follows: because being provided with spacing collar, makes apparatus can make resist-nailed seat assembly contracted length in the axial direction in the process of percussion. cut at tube type anastomat, in suture tissue process, when knife washer and supporting cup are subject to the squeeze of endless knife in succession, this squeeze can be delivered to spacing collar, thus make spacing collar carry out the contraction of length at axial direction due, make knife washer further, supporting cup and spacing collar depart from latch piece and the articulated section being connected post, therefore described resist-nailed seat assembly relatively connects post and can overall pivotable tilt, after resist-nailed seat assembly tilts, decrease and the contact area of pipeline type tissue, make apparatus exit organize time very smooth and easy, tissue can not be produced scratch, and apparatus structure is relatively simple, provide cost savings, decrease the burden of patient, reduce operation risk, suitable popularization.
Another useful effect that the present invention has is: because being provided with above-mentioned tiltable resist-nailed seat, starting after tissue cuts by percussion assembly percussion nail bin and sewed up by free handle, resist-nailed seat can be made to tilt, such apparatus exit organize time, resist-nailed seat can exit pipeline type tissue smoothly, tissue can not be produced damage, also not easily touch down the staple coincideing.
Accompanying drawing explanation
Fig. 1 is the STRUCTURE DECOMPOSITION schematic diagram of resist-nailed seat;
Fig. 2 is latch piece structural representation;
Fig. 3 is for connecting rod structure schematic diagram;
Fig. 4 is the resist-nailed seat sectional view of embodiment 1;
Fig. 5 is the structural representation of embodiment 1 spacing collar;
Fig. 6 is the structural representation of embodiment 2 spacing collar;
Fig. 7 is the resist-nailed seat sectional view of embodiment 2.
In figure, mark is illustrated as: 1-resist-nailed seat assembly; 2-connects post; 3-latch piece; 4-anvil plate; 5-spacing collar; 6-supporting cup; 7-knife washer; 8-round base portion; 9-connection section; 10-first through hole; 11-holds passage; 12-the 2nd through hole; 13-bearing pin; 14-limits projection; The spacing base portion of 15-; The spacing insertion section of 16-; The spacing receptacle of 17-; The spacing distortion portion of 18-; 19-torsion spring.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the technical scheme of the present invention is further elaborated.
Embodiment 1
Present embodiments providing a kind of tiltable resist-nailed seat, comprise resist-nailed seat assembly 1 and connect post 2, the pivotable and described post 2 that is connected of described resist-nailed seat assembly 1 connects; Described resist-nailed seat assembly 1 comprises latch piece 3, anvil plate 4, spacing collar 5, supporting cup 6 and knife washer 7; The near-end of described anvil plate 4 has offered staged groove, and is provided with spacing collar 5, supporting cup 6 and knife washer 7 by far-end to near-end is nested successively in staged groove; The far-end of described latch piece 3 is fixed in described anvil plate 4, the near-end of described latch piece 3 successively through spacing collar 5, supporting cup 6 and knife washer 7, and with the described far-end pivot joint being connected post 2; The articulated section of described connection post 2 with described latch piece 3 can be carried out radial restriction by spacing collar 5, supporting cup 6 and knife washer 7; Spacing collar 5, supporting cup 6 and knife washer 7 can be pressed into the groove depths of anvil plate 4 in the axial direction, thus make resist-nailed seat assembly 1 whole contraction on axial length.
In use, during original state, resist-nailed seat assembly 1 be non-tilt state (namely, post 2 is vertical with being connected), the resist-nailed seat comprising resist-nailed seat assembly 1 and connection post 2 is installed on stapler body, after tissue being cut and sews up, endless knife in tube type anastomat nail bin continues distally to run until cutting off knife washer 7, then endless knife continues extruding supporting cup 6 and spacing collar 5, then supporting cup 6 and spacing collar 5 run to groove depths under squeeze effect, supporting cup 6 has certain thickness and hardness, can enhance device apply squeeze intensity, thus resist-nailed seat assembly 1 carries out whole contraction in length in the axial direction, when spacing collar 5, when supporting cup 6 and knife washer 7 move to the articulated section departing from and connecting post 2 and latch piece 3, latch piece 3 can not continue to be restricted diametrically, then resist-nailed seat assembly 1 can produce overall lateral rotation relative to connection post 2, thus resist-nailed seat assembly 1 tilts, like this apparatus exit organize time, the overall contact area with pipeline type tissue of resist-nailed seat assembly 1 diminishes, apparatus can recess tissue smoothly, tissue can not be produced damage, and apparatus structure is simple, security strengthens, cost is not high, decrease the burden of patient, it is suitable for promoting the use of.
The present embodiment is preferred, and described latch piece 3 comprises round base portion 8 and connection section 9, and described connection section 9 and described round base portion 8 are integrally fixed structure; The near-end of connection section 9 is provided with two symmetrical flanges, and two flanges offer two symmetrical the first through holes 10 respectively;The far-end of described connection post 2 has been offered and has been held passage 11, and the two side holding passage 11 offers two the 2nd through holes 12 matched with two the first through holes 10 respectively; Described round base portion 8 is fixed in described anvil plate 4, and symmetrical two flanges of connection section 9 near-end are arranged in described accommodation passage 11, and is made latch piece 3 by bearing pin 13 through two the first through holes 10 and two the 2nd through holes 12 and be connected the mutual pivot joint of post 2; And it is provided with torsion spring 19, described torsion spring 19 curls up on described bearing pin 13, one end of described torsion spring 19 is connected to the near-end of described latch piece 3, the other end of described torsion spring is connected to the far-end of described connection post 2, the setting of torsion spring 19, can make resist-nailed seat assembly 1 when inclination flip, not easily rock, reverses direction is stablized, make anvil plate 4 exit organize time more firm, safety.
The far-end of described connection post 2 is provided with and limits protruding 14, and pivotal orientation and the angle of described resist-nailed seat assembly 1 are played restriction by the described projection 14 that limits. as shown in Figure 3, described restriction protruding 14 is arranged on the far-end end of described connection post 2, when resist-nailed seat assembly 1 tilts relative to the connection non-pivotable of post 2, the proximal face limiting protruding 14 round base portion 8 with described latch piece 3 abuts against, connecting the far-end end of post 2, restriction protruding 14 position diametrically is provided with a recess (not shown), when described resist-nailed seat assembly 1 tilts relative to described connection post 2 pivotable, owing to the proximal face of spacing preiection 14 and round base portion 8 is to connecing, resist-nailed seat assembly 1 can not be tilted to spacing preiection 14 side, resist-nailed seat assembly 1 can only be tilted to recess side under the effect of torsion spring, so arranging makes the vergence direction of resist-nailed seat assembly 1 fix, tilting procedure does not rock, more smooth and easy, more steady.
The present embodiment is preferred, and described spacing collar 5 comprises spacing base portion 15 and spacing insertion section 16; Described spacing base portion 15 is provided with at least one spacing insertion section 16; The bottom of the staged groove of described anvil plate 4 is provided with the spacing receptacle 17 corresponding with described spacing insertion section 16, and described spacing receptacle 17 can hold described spacing insertion section 16.
Arrange like this, when spacing collar 5 in the axial direction distal movement time, spacing insertion section 16 can be inserted in spacing receptacle 17, make resist-nailed seat assembly 1 entirety compressed length in the axial direction, thus length becomes short in the axial direction, so that knife washer 7, supporting cup 6 and spacing collar 5 depart from latch piece 3 and the articulated section being connected post 2, make resist-nailed seat assembly 1 integral inclined. Because of arrange spacing receptacle 17 receivability described in spacing insertion section 16 so that what spacing collar 5 can be more stable is contracted in the groove of described anvil plate 4; Avoid when spacing collar 5 enters after in anvil plate 4 groove, owing to external force impact can return the situation in original position again so that the inclination of resist-nailed seat assembly 1 is more stable, it is to increase security.
The present embodiment is preferred, and described spacing insertion section 16 is provided with pyramidal projections structure for cylinder far-end, so arranges, and described spacing insertion section 16 can enter in described spacing receptacle 17 smooth and easyly.
The present embodiment is preferred, and the bottom surface of described pyramidal projections structure is slightly larger than the cross section of spacing receptacle 17. Structure like this can make spacing insertion section 16 firmly be limited in spacing receptacle 17, avoids the risk that anvil plate 4 comes off or spacing collar 5 is return, and further enhancing the stability after resist-nailed seat assembly 1 inclination and security.Preferred further, the length of described spacing insertion section 16 is equal to or less than the degree of depth of spacing receptacle 17.
The present embodiment is preferred, and the material of described pyramidal projections structure is the plastic materials such as synthetic resins.
The present embodiment is preferred, described anvil plate 4 has offered at least two wash with watercolours and has let out hole, and described wash with watercolours lets out hole for suture through playing pocket, also can discharge the excess pressure in previous anastomotic simultaneously. Further, wash with watercolours is let out hole and can also be used as spacing receptacle, and in the case, the spacing receptacle of bottom portion of groove is through hole, plays the effect that wash with watercolours lets out hole simultaneously.
Embodiment 2
The present embodiment 2 provides a kind of tiltable resist-nailed seat, and the structure that the present embodiment 2 is only spacing collar 5 from embodiment 1 is different, and the spacing collar 5 of the present embodiment 2 comprises spacing base portion 15 and spacing distortion portion 18; Described spacing base portion 15 is provided with at least one spacing distortion portion 18, when described spacing distortion portion 18 contacts with the groove diapire of anvil plate 4 under the effect of squeeze, distortion can be extruded, thus spacing distortion portion 18 bending compression or fracture in the axial direction, shorten the axial length of spacing collar 5, supporting cup 6 and knife washer 7 distal movement can be made, depart from latch piece 3 and the articulated section being connected post 2, resist-nailed seat assembly 1 is tilted. Preferably, described spacing distortion portion 18 is the lug that hard brittle material or flexible material are made; When being subject to pressure, lug can flexural deformation or fracture, thus make spacing collar 5 length become short, so that spacing collar 5, supporting cup 6 and knife washer 7 depart from the articulated section connecting post 2 and latch piece 3 in succession, make resist-nailed seat assembly 1 integral inclined. Further, the curved protrusion that described spacing distortion portion 18 can be hard brittle material or flexible material is made, the effect being squeezed and can also reaching distortion or fracture.
Embodiment 3
A kind of tube type anastomat, comprises the tiltable resist-nailed seat of above-described embodiment 1 or embodiment 2, pulls the trigger assembly, transmission assembly and free handle; The dismountable far-end being connected to described percussion assembly of described resist-nailed seat, the near-end of described percussion assembly is connected with the far-end of described transmission assembly; Described free handle is arranged on the near-end of described transmission assembly, and described free handle starts percussion assembly to pull the trigger staple and endless knife by transmission assembly, thus realizes the inclination of resist-nailed seat. Because being provided with above-mentioned tiltable resist-nailed seat, after tissue is pulled the trigger and sewed up by apparatus, resist-nailed seat tilts, apparatus exit organize time, resist-nailed seat can exit tissue smoothly, tissue can not be produced damage.
The sequencing of above embodiment only for ease of describing, does not represent the quality of embodiment. And above-mentioned far-end is away from operator one end, near-end is near operation person one end.
Last it is noted that above embodiment is only in order to illustrate the technical scheme of the present invention, it is not intended to limit; Although with reference to previous embodiment to invention has been detailed description, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein part technology feature is carried out equivalent replacement; And these amendments or replacement, do not make the spirit and scope of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution.