CN102160811B - Stitching instrument with empty nail bin protection - Google Patents

Abstract

The invention discloses a stitching instrument with a hollow nail bin protection function, which comprises a nail anvil, a nail bin, a central rod, a support, a nail pushing connecting piece and a firing handle, wherein the nail bin is internally provided with a plurality of nails, the central rod is used for pushing the nail bin and the nails in the nail bin, the support is connected with the nail anvil and the nail bin, the nail pushing connecting piece is arranged in the nail bin at one end and connected with the central rod at the other end, the firing handle is connected with the central rod, the support is provided with a safety block, a clamping block is movably arranged on the nail pushing connecting piece and is positioned between the nail bin and the central rod, the safety block is abutted against the clamping block and separated from the central rod in the unlocking state of the stitching instrument, the clamping. According to the invention, after the safety block is locked, the nail bin needs to be detached after unlocking, the fixture block is taken down, and when the safety block is unlocked, an operator simultaneously confirms whether nails are in the nail bin, so that the safety problem caused by negligence of personnel is solved.

Description

The stiching instrument that has the protection of sky nail bin

Technical field

the present invention relates to a kind of medical apparatus and instruments, relate in particular to a kind of stiching instrument.

Background technology

are present, and physiological tissues such as esophagus, stomach, intestinal are carried out surgical operation when coincideing, and often use the surgical operation Binding Instrument to coincide, and wherein the linear suture device is a kind of of outbalance.In the prior art; With reference to U.S. Pat 7407076; Put down in writing a kind of linear suture device; Be used for closed digestive tract and viscera tissue wound, generally comprise housing, be fixed in the intravital support of shell, be arranged at rack far end and be used to implement sew application nail anvil and nail bin, be arranged in the support and be used to promote the thrust unit of the nail in nail bin and the nail bin, and be arranged on the support and be connected in the firing handle of thrust unit through a rotating shaft pivot.

The use ofthis apparatus is roughly following: at first, nail anvil is separated with nail bin, make the linear suture device be in original state, tissue to be sewed up is placed between nail anvil and the nail bin; Then, the extruding firing handle makes nail bin draw close to the nail anvil direction, and releases the seam nail in the nail bin through the effect of thrust unit, thereby accomplishes sew application; At last, decontrol firing handle, thrust unit and nail bin return to original state together.

straight line stiching instrument is as lacking safety, can occur not having nail percussion or mistake percussion in the use and have influence on operation and normally carry out, even can cause operative failure; Therefore, by the nail bin after pulling the trigger sky nail bin protector should be set, the action that the empty nail bin protection of apparatus in the past only will be pulled the trigger is locked; Be about to the firing handle locking and make it and to operate, apparatus is not locked fully, in case with the firing handle release; Apparatus still can be operated, and has certain potential safety hazard.

Summary of the invention

for addressing the above problem, and the object of the present invention is to provide a kind of stiching instrument that has the protection of sky nail bin, will lock fully after the apparatus percussion, and whole apparatus can not be done any action, and apparatus automatically locks, and need not manually-operated.

are in order to reach above purpose; The technical scheme that the present invention adopts is: have the stiching instrument of sky nail bin protection, it comprise nail anvil, inside be provided with the nail bin of some seams nails, be used to promote the seam nail in nail bin and the nail bin center-pole, connect nail anvil and support, an end of nail bin and be arranged on nail bin is interior and the other end is connected with center-pole ejector pin in flakes, and the firing handle that links to each other with center-pole; Support is provided with safety block; Ejector pin is gone up in flakes and is provided with fixture block movably, and this fixture block is between nail bin and center-pole, under the released state of stiching instrument; Safety block and fixture block offset and the off center bar; Under the lock-out state of stiching instrument, fixture block leaves safety block, and safety block gets between fixture block and the center-pole.

preferably, fixture block can be connected with ejector pin along the relative ejector pin of the direction of motion of center-pole in flakes movably in flakes.

more preferably, nail bin is provided with side opening, and the axle of this side opening is parallel with the center-pole direction of motion.

further, fixture block has the inserted link that the end has trip, and inserted link is arranged in the side opening; Under the released state of stiching instrument; Trip is located in the side opening, and under the lock-out state of stiching instrument, trip stretches out side opening makes fixture block and nail bin clamping mutually.

further, support is provided with safety block applied and makes it have the shell fragment of the power that gets into the movement tendency between center-pole and the fixture block.

through adopting technique scheme, the present invention has the stiching instrument of sky nail bin protection, and during percussion, center-pole promotes ejector pin in flakes, also promotes the fixture block that ejector pin is gone up in flakes simultaneously, makes trip stretch out side opening, thereby makes fixture block and nail bin clamping; After accomplishing sew application, decontrol firing handle, center-pole is retreated, and drive ejector pin and retreat in flakes, but fixture block is not removed along with returning together; When center-pole returns when removing original state fully, because there be not stopping of fixture block, the safety block on the support moves under the effect of shell fragment; Get between fixture block and the center-pole; Stop center-pole forward travel once more, thereby lock the athletic performance of whole apparatus, apparatus can't be pulled the trigger once more.The present invention is after the safety block locking, and release needs nail bin is pulled down, and takes off fixture block, and when release, operator have confirmed simultaneously whether nail is arranged in the nail bin, has solved the safety problem that causes because of personnel's carelessness.

Description of drawings

Accompanying drawing 1 is a structural representation of the present invention;

Accompanyingdrawing 2 is the partial view of released state of the present invention;

accompanyingdrawing 3 is the partial view of lock-out state of the present invention.

Label is among the figure:

1, nail anvil; 2, nail bin; 21, side opening; 3, ejector pin in flakes; 4, center-pole; 5, support; 6, firing handle; 7, fixture block; 71, inserted link; 72, trip; 8, shell fragment; 9, safety block.

The specific embodiment

Set forth preferred embodiment of the present invention below in conjunction with accompanying drawing in detail, thereby so that advantage of the present invention and characteristic can be easier to it will be appreciated by those skilled in the art that protection scope of the present invention is made more explicit defining.

are shown in accompanying drawing 1 to accompanyingdrawing 3; In order to reach above purpose; The technical scheme that the present invention adopts is: the stiching instrument that has the protection of sky nail bin; It comprises nail anvil 1, inside be provided with thenail bin 2 of some seams nail, be used to promote the seams nail innail bin 2 and thenail bin 2 center-pole 4, connect nail anvil 1 andsupport 5, an end ofnail bin 2 and be arranged onnail bin 2 is interior and the other end is connected with center-pole 4 ejector pin inflakes 3, and the firing handle 6 that links to each other with center-pole 4.

ejector pin is provided with groove in 3 rear end in flakes, and the front end of center-pole 4 is provided with convex tendon, andejector pin 3 is connected with center-pole 4 in flakes; During percussion; Center-pole 4 promotes ejector pins and moves upward in flakes, and after percussion was accomplished, center-pole was removed for 4 times and driven ejector pin and return in flakes and remove.Stiching instrument in the present embodiment is a stapler, and cutter are arranged on ejector pin in flakes on 4, and when accomplishing firing action and retreat, center-pole is removed for 4times ejector pin 3 is pulled back in flakes, and cutter retract in thenail bin 2 simultaneously, have eliminated the potential danger of operator's damage.

are shown in accompanyingdrawing 2;Support 5 is provided withsafety block 9;Ejector pin 3 is provided withfixture block 7 in flakes, andejector pin 3 length in flakes so does not have the space between an end ofnail bin 2 and center-pole 4 and thesupport 5 basically less than the length ofnail bin 2 and center-pole 4 and the ejector pin width of 3 ends that are connected in flakes; And ejector pin inflakes 3 and support 5 between have the space;Fixture block 7 promptly is positioned at this space, and promptlyfixture block 7 is betweennail bin 2 and center-pole 4, andfixture block 7 can 3 move with respect to ejector pin along the direction of motion of center-pole 4 in flakes.

in the present embodiment,ejector pin 3 is provided with convex tendon in a side of joining withfixture block 7 in flakes,fixture block 7 is provided with groove with matching,fixture block 7 can 3 move with respect to ejector pin along convex tendon in flakes after the clamping.Convex tendon is parallel with the direction of motion of center-pole 4.During actual design, also can onfixture block 7, convex tendon be set, groove be set on 3 in flakes with matching with it at ejector pin.

nail bin 2 is provided with side opening 21, and the axle of this side opening 21 is parallel with center-pole 4 directions of motion.

fixture block 7 is provided with the insertedlink 71 that the end hastrip 72, and insertedlink 71 is arranged in the above-mentioned side opening 21.

support 5 is provided withsafety block 9 andsafety block 9 is applied the shell fragment to the power offixture block 7 directions.

Shown in accompanyingdrawing 2, under the released state of stiching instrument,trip 72 is located in the side opening 21, andsafety block 9 is positioned at the side offixture block 7 and center-pole 4, and under the effect ofshell fragment 8,safety block 9 is against the side offixture block 7.

Inwhen percussion, center-pole 4 promotes ejector pins inflakes 3, also promotes the ejectorpin fixture block 7 on 3 in flakes simultaneously, and fixture block 73 moves upward with ejector pin in flakes together, andtrip 72 stretches outside opening 21, thereby makesfixture block 7 andnail bin 2 clampings; After accomplishing sew application,decontrol firing handle 6, center-pole 4 is retreated, and drive ejector pin and 3 retreat in flakes, but catch onnail bin 2 owing totrip 72 has stretched outside opening 21, sofixture block 72 can not removed along with returning together; When returning fully, center-pole 4 removes original state; Because there be not stopping offixture block 7, thesafety block 9 on thesupport 5 moves tonail bin 2 and center-pole 4 directions under the effect ofshell fragment 8, and the end ofsafety block 9 gets betweenfixture block 7 and the center-pole 4; This moment, stiching instrument was in the lock state, shown in accompanying drawing 3.Safety block 9 stops center-pole 4 forward travel once more, thereby locks the athletic performance of whole apparatus, and apparatus can't be pulled the trigger once more.

the foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to let the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.

Claims (1)

1. one kind has the stiching instrument that the sky nail bin is protected; It comprises nail anvil (1), inside be provided with the nail bin (2) of some seams nail, be used to promote the seam nail in said nail bin (2) and the nail bin (2) center-pole (4), connect said nail anvil (1) and support (5), an end of nail bin (2) and be arranged on said nail bin (2) is interior and the other end is connected with said center-pole (4) ejector pin (3) in flakes; It is characterized in that: described support (5) is provided with safety block (9); Described ejector pin is provided with fixture block (7) on (3) in flakes movably; This fixture block (7) is positioned between said nail bin (2) and the center-pole (4); Under the released state of stiching instrument, said safety block (9) offsets and off center bar (4) with fixture block (7), under the lock-out state of stiching instrument; Said fixture block (7) leaves safety block (9), and said safety block (9) gets between fixture block (7) and the center-pole (4); Said fixture block (7) can along the relative ejector pin of the direction of motion of center-pole (4) in flakes (3) movably with ejector pin in flakes (3) be connected; Described nail bin (2) is provided with side opening (21), and the axle of this side opening (21) is parallel with said center-pole (4) direction of motion; Described fixture block (7) has the inserted link (71) that the end has trip (72); Said inserted link (71) is arranged in the said side opening (21); Under the said released state of stiching instrument; Said trip (72) is located in the said side opening (21), and under the said lock-out state of stiching instrument, said trip (72) stretches out side opening (21) makes fixture block (7) and nail bin (2) clamping mutually; Described support (5) is provided with said safety block (9) applied and makes it have the shell fragment (8) of the power of the movement tendency between entering center-pole (4) and the fixture block (7).

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