阅读说明：本技术 一次性腔内切割吻合器的空钉仓无法击发装置 (Hollow nail bin non-percussion device of disposable intracavity cutting anastomat ) 是由 王伟 江世华 王海龙 潘东键 于 2019-11-14 设计创作，主要内容包括：本发明涉及的是一次性腔内切割吻合器的空钉仓无法击发装置,具体是一种腔内组织上施加线性排,在此线性排吻合器间切割组织的配套装置,使击发后的钉仓组件所形成的空钉仓无法再一次被击发,从而起到安全保险作用。包括驱动套、保险弹簧、固定叉、击发保险销、上半壳体、下半壳体、切割刀和切割刀推动板。所述的驱动套内部设置有固定叉安装槽,两侧设置击发保险销孔,驱动套上下两侧分别设置了切割刀推动板卡槽；所述的保险弹簧为扭转弹簧；所述的固定叉前端部设置有叉头；所述的上半壳体内部中间有一切割刀槽；所述的下半壳体内部中间有一切割刀槽；所述的切割刀外形呈现工字状,可与切割刀推动板连接；所述的切割刀推动板一侧有一切割刀卡点。(The invention relates to a device for preventing a hollow nail bin of a disposable intracavity cutting anastomat from being fired, in particular to a matching device for applying linear rows to intracavity tissues and cutting the tissues between anastomats of the linear rows, so that the hollow nail bin formed by a nail bin assembly after being fired cannot be fired again, and the safety function is achieved. Comprises a driving sleeve, a safety spring, a fixed fork, a triggering safety pin, an upper half shell, a lower half shell, a cutting knife and a cutting knife pushing plate. A fixed fork mounting groove is formed in the driving sleeve, firing safety pin holes are formed in two sides of the driving sleeve, and cutting knife pushing plate clamping grooves are formed in the upper side and the lower side of the driving sleeve respectively; the safety spring is a torsion spring; the front end part of the fixed fork is provided with a fork head; a cutting knife groove is arranged in the middle of the inner part of the upper half shell; a cutting knife groove is arranged in the middle of the inner part of the lower half shell; the shape of the cutting knife is I-shaped and can be connected with a cutting knife pushing plate; one side of the cutting knife pushing plate is provided with a cutting knife clamping point.)

1. The device is characterized by comprising a driving sleeve, a safety spring, a fixing fork, a triggering safety pin, an upper half shell, a lower half shell, a cutting knife and a cutting knife pushing plate;

a fixed fork mounting groove is formed in the driving sleeve, triggering safety pin holes are formed in two sides of the fixed fork mounting groove, and cutting knife pushing plate clamping grooves are formed in the upper side and the lower side of the driving sleeve respectively;

the safety spring is a torsion spring, the front end part of the safety spring is extended to a section and then folded to form an angle of 90 degrees, the safety spring can be directly hung on the fixed fork, the rear end of the safety spring is extended to a section and can be abutted against the driving sleeve, and the central aperture of the safety spring is larger than that of the triggering safety pin, so that the safety spring can smoothly pass through the triggering safety pin;

the front end part of the fixed fork is provided with a fork head which is a rectangular platform vertical to the fixed fork body, the tail part of the fixed fork is provided with a through hole, and the middle part of the fixed fork is provided with a safety spring clamping groove which can hang a safety spring to fix the safety spring;

the shaft diameter of the end part of one side of the triggering safety pin is slightly larger than the aperture of the triggering safety pin hole of the driving sleeve, and the shaft diameter of the other side of the triggering safety pin is matched with the through hole of the driving sleeve, the middle hole of the safety spring and the through hole at the tail part of the fixed fork;

the middle of the inner part of the upper half shell is provided with a cutting knife groove, a cutting knife pushing plate can slide in the driving sleeve after being arranged on the driving sleeve, platforms on two sides of the cutting knife groove are arranged on the left side and the right side of the cutting knife groove, the tail end part of the cutting knife groove is provided with a groove, the groove is flush with the cutting knife groove, a front platform of the groove is arranged in front of the groove, the front platform of the groove is higher than the groove and lower than the platforms on two sides of the cutting knife groove, so that the front platform of the groove is connected with the platforms on two sides of the cutting knife groove to form a slope, meanwhile, the front platform of the groove and the groove form a step of the front end surface of the groove with high-low fall, two rectangular initial bosses;

a cutting knife groove is arranged in the middle of the inner part of the lower half shell, the cutting knife pushing plate can slide in the driving sleeve after being arranged on the driving sleeve, and an upper half shell clamping groove is arranged at the tail part of the cutting knife groove and matched with the upper half shell to cover the upper half shell;

the shape of the cutting knife is I-shaped, one side of the I-shaped beam is provided with a cutting edge, the other side of the I-shaped beam is not provided with the cutting edge, and the side without the cutting edge is provided with a cutting knife push plate clamping groove which can be connected with a cutting knife push plate;

one side of the cutting knife pushing plate is provided with a cutting knife clamping point which is connected with a cutting knife pushing plate clamping groove of the cutting knife, and the other side of the cutting knife pushing plate is provided with a driving sleeve clamping position which is matched with the driving sleeve clamping groove.

2. The device of claim 1, wherein the device comprises a hollow cartridge unfired cartridge, and wherein the hollow cartridge unfired cartridge comprises: the empty unable trigger device of nail storehouse hang the insurance spring on fixed fork when assembling, connect the drive cover through the percussion safety pin, the other end of insurance spring supports on the drive cover, when the fixed fork was rotatory around the percussion safety pin in the drive cover inside at this moment, the insurance spring produced moment of torsion or revolving force, pulled back initial position with them, after the percussion was accomplished and is pulled back the drive cover, the fixed fork supported first casing under the insurance spring effect, formed the unable trigger device of empty nail storehouse.

3. The device of claim 1, wherein the device comprises a hollow cartridge unfired cartridge, and wherein the hollow cartridge unfired cartridge comprises: the cutting knife pushing plate is arranged in a cutting knife pushing plate clamping groove of a driving sleeve, a cutting knife is arranged at the front end of the cutting knife pushing plate, a fixing fork, a safety spring, the driving sleeve, a triggering safety pin, an assembly body of the cutting knife and the cutting knife pushing plate is arranged in a cutting knife groove of an upper half shell, the fixing fork is abutted against a rectangular initial boss of the upper half shell, a lower half shell is covered above the upper half shell, an upper connecting sheet and a lower connecting sheet are respectively arranged in a connecting sheet clamping groove of the upper half shell and the lower half shell, the front end parts of the upper connecting sheet and the lower connecting sheet are connected with a nail bin seat and a nail abutting seat through an upper rotating joint and a lower rotating joint, the nail bin is arranged in the nail bin seat, the cutting knife and the cutting knife pushing plate are arranged in the cutting knife groove through the upper rotating joint and the lower rotating joint, a sleeve is sleeved outside the upper half shell and, the nail bin assembly with the empty nail bin non-firing device is assembled.

4. The device of claim 1, wherein the device comprises a hollow cartridge unfired cartridge, and wherein the hollow cartridge unfired cartridge comprises: when the nail cutter is fired, the driving sleeve pushes the cutter pushing plate and the fixed fork, after the fixed fork skips over the groove, the fixed fork slides to a groove front platform of the upper half body from the rectangular initial boss, and slides to platforms on two sides of the cutter groove through a slope to complete firing, so that an empty nail bin is formed;

drive cutting knife catch bar and fixed fork return together when the drive sleeve is pulled back, fixed fork this moment is earlier through cutting sword groove both sides platform, the slope is slided to the back, at last through recess front platform, slide in the recess, make fixed fork support recess front end face step under the effect of insurance spring, the drive sleeve can't be promoted forward this moment, the cutting knife catch bar can't advance once more, the unable percussion of empty nail storehouse, the maloperation of percussion is carried out to empty nail storehouse in having avoided the operation process, thereby play safety and safety's effect.

5. The device of claim 1, wherein the device comprises a hollow cartridge unfired cartridge, and wherein the hollow cartridge unfired cartridge comprises: the rectangular initial boss of the upper half shell is positioned right above the groove.

6. The device of claim 1, wherein the device comprises a hollow cartridge unfired cartridge, and wherein the hollow cartridge unfired cartridge comprises: the fixed fork in the driving sleeve mounting groove is positioned in the groove after being pulled back, and is propped against the bottom surface of the groove of the upper half shell and the step of the front end surface of the groove under the action of the safety spring.

Technical Field

The invention relates to a device for preventing a hollow nail bin of a disposable intracavity cutting anastomat from being fired, in particular to a matching device which applies linear rows on intracavity tissues and cuts the tissues among the linear rows of anastomats at the same time, so that the hollow nail bin formed by a nail bin assembly after being fired cannot be fired again, thereby playing a role of safety.

Background

In the traditional or open process, a doctor directly contacts the surgical site, and the surgical incision has larger wound, so that the patient feels more painful and the postoperative recovery is slow. Whereas in minimally invasive surgery the patient is subjected to an abdominal or endoscopic procedure, the procedure being performed through a small incision or narrow cannula inserted through a wound in the patient. Because it reduces trauma, thereby shortening patient recovery and significantly reducing overall costs, minimally invasive surgery has significant advantages over open surgery in terms of postoperative recovery. To accommodate the specific needs of both endoscopic and abdominal approaches, endoscopic suturing devices have been developed to provide easier access to the surgical site for the surgeon. Typically, these stapling instruments include an articulatable tool component supported at the proximal end of the stapling apparatus. The tool assembly may be selectively manipulated to enable a surgeon to manipulate the surgical device within a confined space. These instruments provide significant medical benefits to endoscopic procedures. Nevertheless, improvements in functionality and security are desired.

Most of cutting anastomats in the current market are open type cutting anastomats, and compared with intracavity cutting anastomats, the open type cutting anastomats are large in incision of patients and not beneficial to postoperative recovery of the patients. The intracavity cutting anastomat used in the current market has the defects that the structure of a hollow nail bin triggering device is complex, the number of parts is large, the requirement on assembly is high, and the reliability of the intracavity cutting anastomat cannot be completely ensured. Meanwhile, as the surgical instrument has a plurality of complex parts, the manufacturing cost is increased, the medical cost of a patient is improved, and the surgical instrument is not beneficial to large-scale popularization and use.

Disclosure of Invention

The invention aims to provide a device for preventing an empty nail bin of a disposable intracavity cutting anastomat from being fired aiming at the defects.

The device for preventing the empty nail bin of the disposable intracavity cutting anastomat from being fired is realized by adopting the following technical scheme:

the device for preventing the empty nail bin of the disposable intracavity cutting anastomat from being fired comprises a driving sleeve, a safety spring, a fixing fork, a firing safety pin, an upper half shell, a lower half shell, a cutting knife and a cutting knife pushing plate.

The driving sleeve is internally provided with a fixed fork mounting groove, two sides of the fixed fork mounting groove are provided with firing safety pin holes, and the upper side and the lower side of the driving sleeve are respectively provided with a cutting knife pushing plate clamping groove.

The safety spring is a torsion spring, the front end part of the safety spring is extended to a section and then folded to form an angle of 90 degrees, the safety spring can be directly hung on the fixed fork, the rear end of the safety spring is extended to a section and can be propped against the driving sleeve, and the central aperture of the safety spring is larger than the central aperture of the triggering safety pin, so that the safety spring can smoothly pass through the triggering safety pin.

The front end part of the fixed fork is provided with a fork head which is a rectangular platform vertical to the fixed fork body, the tail part of the fixed fork is provided with a through hole, and the middle part of the fixed fork is provided with a safety spring clamping groove which can hang a safety spring to fix the safety spring.

The shaft diameter of the end part of one side of the triggering safety pin is slightly larger than the aperture of the triggering safety pin hole of the driving sleeve, and the shaft diameter of the other side of the triggering safety pin is matched with the through hole of the driving sleeve, the middle hole of the safety spring and the through hole at the tail part of the fixed fork.

The middle of the inner part of the upper half shell is provided with a cutting knife groove, the cutting knife pushing plate can slide in the driving sleeve after being arranged on the driving sleeve, platforms on two sides of the cutting knife groove are arranged on the left side and the right side of the cutting knife groove, the tail end part of the cutting knife groove is provided with a groove, the groove is parallel to the cutting knife groove, a front groove platform is arranged in front of the groove, the front groove platform is higher than the groove and lower than the platforms on two sides of the cutting knife groove, therefore, the front groove platform is connected with the platforms on two sides of the cutting knife groove, a slope can be formed, and meanwhile. Two rectangular initial bosses are extended from the left side and the right side inside the upper half shell right above the groove and higher than platforms on two sides of the cutting knife groove, and the rectangular initial bosses are the initial positions of the nail bin.

The middle of the inner part of the lower half shell is provided with a lower half shell cutting knife groove, the cutting knife pushing plate is arranged on the driving sleeve and can slide in the driving sleeve, and the tail part of the cutting knife groove of the lower half shell is provided with an upper half shell matching clamping groove which is matched with the upper half shell to cover the upper half shell.

The cutting knife appearance present the I shape, there is the blade one side of I-beam, one side does not have the blade, does not have the blade side and has the cutting knife slurcam draw-in groove, can be connected with the cutting knife slurcam.

One side of the cutting knife pushing plate is provided with a cutting knife clamping point which is connected with a cutting knife pushing plate clamping groove of the cutting knife, and the other side of the cutting knife pushing plate is provided with a driving sleeve clamping position which is matched with the driving sleeve clamping groove.

The empty unable trigger device of nail storehouse hang safety spring on fixed fork during equipment, through percussion safety pin connection drive cover, the other end of safety spring supports on the drive cover, when fixed fork was rotatory around the percussion safety pin in the drive cover inside at this moment, the safety spring produced moment of torsion and revolving force, pulled back initial position with them, after the percussion was accomplished and is pulled back the drive cover, the fixed fork supported first casing under the safety spring effect, formed the unable trigger device of empty nail storehouse.

The cutting knife pushing plate is arranged in a cutting knife pushing plate clamping groove of a driving sleeve, a cutting knife is arranged at the front end of the cutting knife pushing plate, a fixing fork, a safety spring, the driving sleeve, a triggering safety pin, an assembly body of the cutting knife and the cutting knife pushing plate is arranged in a cutting knife groove of an upper half shell, the fixing fork is abutted against a rectangular initial boss of the upper half shell, a lower half shell is covered above the upper half shell, an upper connecting sheet and a lower connecting sheet are respectively arranged in a connecting sheet clamping groove of the upper half shell and the lower half shell, the front end parts of the upper connecting sheet and the lower connecting sheet are connected with a nail bin seat and a nail abutting seat through an upper rotating joint and a lower rotating joint, the nail bin is arranged in the nail bin seat, the cutting knife and the cutting knife pushing plate are arranged in the cutting knife groove through the upper rotating joint and the lower rotating joint, a sleeve is sleeved outside the upper half shell and, the nail bin assembly with the empty nail bin non-firing device is assembled.

When the nail cutter is fired, the driving sleeve pushes the cutter pushing plate and the fixed fork, after the groove is skipped, the fixed fork slides to a groove front platform of the upper half shell from the rectangular initial boss, and slides to platforms on two sides of the cutter groove through a slope to complete firing, so that an empty nail bin is formed. Drive cutting knife catch bar and fixed fork return together when the drive sleeve is pulled back, fixed fork this moment is earlier through cutting sword groove both sides platform, the slope is slided to the back, at last through recess front platform, slide in the recess, make fixed fork support recess front end face step under the effect of insurance spring, the drive sleeve can't be promoted forward this moment, the cutting knife catch bar can't advance once more, the unable percussion of empty nail storehouse, the maloperation of percussion is carried out to empty nail storehouse in having avoided the operation process, thereby play safety and safety's effect.

The working principle is as follows:

when the hollow nail cartridge incapability triggering device of the disposable intracavity cutting anastomat is used with the disposable intracavity cutting anastomat in a matched mode, after an arrow head of a nail cartridge assembly tail part assembled into the disposable nail cartridge incapability triggering device is aligned with an arrow head of the disposable intracavity cutting anastomat, the nail cartridge assembly assembled into the disposable nail cartridge incapability triggering device is inserted into the disposable intracavity cutting anastomat, the nail cartridge assembly assembled into the disposable nail cartridge incapability triggering device in a counterclockwise rotating mode is locked after being connected with the disposable intracavity cutting anastomat, and the nail cartridge assembly assembled into the disposable nail cartridge incapability triggering device is installed. The movable handle is driven to tightly lock and close the nail pushing seat and the nail bin seat with the installed nail bin, after a clamping safety reset button is pressed down, the movable handle is driven for a plurality of times continuously, a rack arranged inside the fixed handle drives the driving sleeve and the cutting knife pushing plate to move forwards, the cutting knife drives the pushing block, the pushing block moves forwards to drive the pushing piece to ascend so as to form a suturing nail, and therefore the clamped tissue is sewn and cut. After the sewing and cutting are finished, the reset handle is pulled backwards to enable the rack to drive the driving sleeve to reset, and at the moment, the jaw formed by the nail abutting seat and the nail bin seat is opened. If the steps are repeated, the movable handle is driven to close a jaw formed by the nail abutting seat and the nail bin seat, the clamping safety reset button is pressed down, and when the movable handle is driven again to be fired, the fixed fork slides onto a front platform of the groove of the upper half shell from the rectangular initial boss during unfired, and slides onto platforms on two sides of the cutting knife groove through slopes after jumping over the groove to complete firing, so that an empty nail bin is formed. When the driving sleeve is pulled back, the cutting knife and the fixed fork are driven to return together, at the moment, the fixed fork firstly passes through the platforms on the two sides of the cutting knife groove, then slides to the slope, finally passes through the front platform of the groove and slides into the groove, the fixed fork is enabled to abut against the step on the front end face of the groove under the action of the safety spring, at the moment, the driving sleeve cannot be pushed again, the cutting knife pushing plate cannot advance again, the empty nail bin cannot be fired again, the misoperation of firing the empty nail bin in the operation process is avoided, and therefore the safety protection effect is achieved.

The device for preventing the empty nail bin of the disposable intracavity cutting anastomat from being fired comprises:

the hollow nail bin non-percussion device of the disposable intracavity cutting anastomat has reasonable design and exquisite structure, and is provided with the driving sleeve, the safety spring, the fixing fork, the percussion safety pin, the upper half shell, the lower half shell, the cutting knife and the cutting knife pushing plate. The doctor can be relaxed in the operation and avoid carrying out the mistake percussion to empty nail storehouse, has reduced misoperation's possibility greatly to the operation safety has been guaranteed. Meanwhile, the components and the advanced design of few parts enable the installation and production of the product to be simpler, the cost is fundamentally reduced, and the economical efficiency of the product is improved, so that the medical burden of a patient is reduced, and the popularization and the application in clinic are facilitated.

Drawings

The invention will be further explained with reference to the drawings, in which:

FIG. 1 is a schematic view of the outer shape of a disposable endoluminal cutting stapler.

FIG. 2 is a schematic view of the mounting structure of the cartridge assembly and the endocutter.

FIG. 3 is an exploded view of the cartridge assembly.

Fig. 4 is an exploded view of the upper and lower housing half assemblies.

FIG. 5 is an exploded view of the drive sleeve assembly of the present invention, the upper housing half and the cutter assembly.

Fig. 6 is an exploded view of the drive sleeve assembly of the present invention.

FIG. 7 is a schematic view of the initial state structure of the driving sleeve assembly and the upper housing half according to the present invention.

FIG. 8 is a front view and a left side sectional view of the drive sleeve assembly and upper housing half of the present invention in an initial state.

FIG. 9 is a schematic view of the cartridge assembly in an unfired configuration and an enlarged view of a portion thereof in use with a surgical stapler.

FIG. 10 is a schematic view of a staple cartridge assembly in an enlarged partial view thereof in a fired configuration when used with a surgical stapler.

FIG. 11 is a front view and a bottom cross-sectional view of the stationary fork assembly and upper housing half of the present invention in an initial state

FIG. 12 is a schematic view of a staple cartridge assembly of the present invention in a partially enlarged configuration after it has been repositioned and then re-latched closed for use with a surgical stapler.

Wherein the reference numbers indicate: 1. the nail pushing device comprises a nail pushing seat 2, a nail bin 3, a nail bin seat 4, an empty nail bin unfixable device 5, a connecting rod sleeve 6, a steering rotating handle 7, a reset handle 8, a fixed handle 9, a clamping safety reset button 10 and a movable handle;

2-1, passing a cutting knife through a groove 2-2 and pushing blocks;

4-1 parts of an upper half shell, 4-2 parts of a lower half shell, 4-3 parts of a driving sleeve, 4-4 parts of a cutting knife pushing plate, 4-5 parts of a cutting knife, 4-6 parts of a fixing fork, 4-7 parts of a safety spring, 4-8 parts of a firing safety pin, 4-9 parts of an upper rotary joint, 4-10 parts of a lower rotary joint, 4-11 parts of an upper connecting piece and a lower connecting piece, 4-12 parts of a sleeve;

4-1-1, a groove front end surface step, 4-1-2, a rectangular initial boss, 4-1-3, a groove, 4-1-4, a groove front platform, 4-1-5, a cutting knife groove, 4-1-6 and platforms on two sides of the cutting knife groove;

4-2-1, a lower half shell cutting knife groove, 4-2-2 and an upper half shell matching with a clamping groove;

4-3-1, a fixed fork mounting groove, 4-3-2, a firing safety pin hole, 4-3-3 and a cutting knife pushing plate clamping groove;

4-4-1, 4-4-2, and a driving sleeve buckling position;

4-5-1, pushing the board clamping groove by a cutting knife;

4-6-1 parts of a fixed fork head, 4-6-2 parts of a through hole, 4-6-3 parts of a safety spring clamping groove.

Detailed Description

Fig. 1-2 generally show an intracavity cutting anastomat, which mainly comprises a fixed handle 8, a reset handle 7 arranged on the fixed handle 8, a clamping safety reset button 9, a movable handle 10, a steering rotary handle 6, a connecting rod sleeve 5, an empty nail bin unfixing device 4, a nail abutting seat 1, a nail bin 2 and a nail bin seat 3.

Referring to the attached drawings 3-8, the device for preventing the empty nail bin of the disposable intracavity cutting anastomat from being fired comprises a driving sleeve 4-3, a safety spring 4-7, a fixing fork 4-6, a firing safety pin 4-8, an upper half shell 4-1, a lower half shell 4-2, a cutting knife 4-4 and a cutting knife pushing plate 4-5.

A fixed fork installation groove 4-3-1 is arranged in the driving sleeve 4-3, firing safety pin holes 4-3-2 are arranged on two sides of the fixed fork installation groove 4-3-1, and cutting knife pushing plate clamping grooves 4-3-3 are respectively arranged on the upper side and the lower side of the driving sleeve 4-3.

The safety spring 4-7 is a torsion spring, the front end part of the safety spring 4-7 is extended to a section and then folded to an angle of 90 degrees, the safety spring can be directly hung on the fixed fork 4-6, the rear end part of the safety spring is extended to a section and can be propped against the driving sleeve 4-3, and the central aperture of the safety spring 4-7 is larger than that of the triggering safety pin 4-8, so that the safety spring can smoothly pass through the triggering safety pin.

The front end part of the fixed fork 4-6 is provided with a fork head 4-6-1, the fork head 4-6-1 of the fixed fork is a rectangular platform vertical to the fork body of the fixed fork 4-6, the tail part of the fixed fork 4-6 is provided with a through hole 4-6-2, and the middle part of the fixed fork is provided with a safety spring clamping groove 4-6-3 which can hang and fix a safety spring 4-7.

The shaft diameter of the end part of one side of the triggering safety pin 4-8 is slightly larger than the hole diameter of the triggering safety pin hole 4-3-2 of the driving sleeve 4-3, and the shaft diameter of the other side of the triggering safety pin is matched with the through hole 4-3-2 of the driving sleeve, the middle hole of the safety spring and the through hole 4-6-2 at the tail of the fixed fork.

A cutting knife groove 4-1-5 is arranged in the middle of the upper half shell 4-1, a cutting knife push plate 4-4 can slide in the driving sleeve 4-3 after being arranged on the driving sleeve 4-3, platforms 4-1-6 at two sides of the cutting knife groove 4-1-5 are arranged at the left side and the right side of the cutting knife groove 4-1-5, a groove 4-1-3 is arranged at the tail end of the cutting knife groove 4-1-5, the groove 4-1-3 is flush with the cutting knife groove 4-1-5, a front platform 4-1-4 with a groove is arranged in front of the groove 4-1-3, the front platform 4-1-4 with a groove is higher than the groove 4-1-3 and lower than the platforms 4-1-6 at two sides of the cutting knife groove, therefore, the front platform 4-1-4 with, a slope is formed, and the front platform 4-1-4 of the groove and the groove 4-1-3 form a groove front end surface step 4-1-1 with high-low fall. Two rectangular initial bosses 4-1-2 extend out of the left side and the right side in the upper half shell 4-1 at the positions which are higher than platforms 4-1-6 on the two sides of the cutting knife groove and are right above the groove 4-1-3, and the rectangular initial bosses 4-1-2 are the initial positions of the nail bin.

The middle of the inner part of the lower half shell 4-2 is provided with a lower half shell cutting knife groove 4-2-1, a cutting knife pushing plate 4-4 can slide in the driving sleeve 4-3 after being arranged on the driving sleeve, and the tail part of the cutting knife groove of the lower half shell is provided with an upper half shell matching clamping groove 4-2-2 which is matched with the upper half shell to cover the upper half shell.

The shape of the cutting knife 4-5 is I-shaped, one side of the I-shaped beam is provided with a cutting edge, the other side of the I-shaped beam is not provided with the cutting edge, and the side without the cutting edge is provided with a cutting knife push plate clamping groove 4-5-1 which can be connected with a cutting knife push plate 4-4.

One side of the cutting knife pushing plate 4-4 is provided with a cutting knife clamping point 4-4-1 which is connected with a cutting knife pushing plate clamping groove 4-5-1 of the cutting knife 4-5, and the other side is provided with a driving sleeve clamping position 4-4-2 which is matched with a driving sleeve clamping groove 4-3-3.

When the empty nail bin unfixing device 4 is assembled, the safety spring 4-7 is hung on the fixed fork 4-6 and is connected with the driving sleeve 4-3 through the triggering safety pin 4-8, the other end of the safety spring 4-7 abuts against the driving sleeve 4-3, at the moment, when the fixed fork 4-6 rotates around the triggering safety pin 4-8 in the driving sleeve 4-3, the safety spring 4-7 generates torque and rotating force to pull the torque and the rotating force back to the initial position, and after triggering is completed and the driving sleeve 4-3 is pulled back, the fixed fork 4-6 abuts against the upper half shell 4-1 under the action of the safety spring 4-7 to form the empty nail bin unfixing device. A cutting knife push plate 4-4 is arranged in a cutting knife push plate clamping groove 4-3-3 of a driving sleeve 4-3, a cutting knife 4-5 is arranged at the front end of the cutting knife push plate 4-4, an assembly body provided with a fixed fork 4-6, a safety spring 4-7, a driving sleeve 4-3, a triggering safety pin 4-8, a cutting knife 4-5 and the cutting knife push plate 4-4 is arranged in a cutting knife groove 4-1-5 of an upper half shell 4-1, the fixed fork 4-6 is pressed on a rectangular initial boss 4-1-2 of the upper half shell 4-1, a lower half shell 4-2 is covered above the upper half shell 4-1, an upper connecting piece 4-11 and a lower connecting piece 4-11 are respectively arranged in a connecting piece clamping groove of the upper half shell 4-1 and the lower half shell 4-2, the front end parts of an upper connecting sheet 4-11 and a lower connecting sheet 4-11 are connected with a nail bin seat 3 and a nail pushing seat 1 through an upper adapter 4-9 and a lower adapter 4-10, a nail bin 2 is arranged in the nail bin seat 3, a cutting knife 4-5 and a cutting knife pushing plate 4-4 are arranged in a cutting knife groove 4-1 through the upper adapter 4-9 and the lower adapter 4-10, a sleeve 4-12 is sleeved outside the upper half shell 4-1 and the lower half shell 4-2, anastomotic nails are arranged in the nail bin 2, a pushing block 2-2 is arranged in a nail pushing groove of the nail bin 2, and the nail bin assembly with an empty nail bin and a percussion device is assembled. When the nail is fired, the driving sleeve 4-3 pushes the cutting knife pushing plate 4-4 and the fixed fork 4-6 to jump over the groove 4-1-3, then the fixed fork 4-6 slides onto the groove front platform 4-1-4 of the upper half shell 4-1 from the rectangular initial boss 4-1-2, and slides onto the platforms 4-1-6 at the two sides of the cutting knife groove through the slope to complete firing, and an empty nail bin is formed. When the driving sleeve 4-3 is pulled back, the cutting knife pushing plate 4-4 and the fixed fork 4-6 are driven to return together, at the moment, the fixed fork 4-6 firstly passes through the platforms 4-1-6 at the two sides of the cutting knife groove, then slides to the slope, finally passes through the front platform 4-1-4 of the groove and slides to the inner part 4-1-3 of the groove, under the action of the safety spring 4-7, the fixed fork 4-6 is enabled to abut against the front end surface step 4-1-1 of the groove, at the moment, the driving sleeve 4-3 cannot be pushed forward, the cutting knife pushing plate 4-4 cannot advance again, the empty nail bin cannot be fired, the misoperation of firing the empty nail bin in the operation process is avoided, and the safety function is achieved.

Referring to the attached drawings 1-2, when the disposable intracavity cutting anastomat cartridge component provided with the hollow cartridge percussion device is used with the disposable intracavity cutting anastomat in a matched mode, an arrow at the tail of the cartridge component is aligned with an arrow at the head of the disposable intracavity cutting anastomat, the cartridge component is inserted into the disposable intracavity cutting anastomat, the cartridge component is rotated anticlockwise to enable the cartridge component to be connected with the disposable intracavity cutting anastomat and then locked, and at the moment, the cartridge component is installed completely.

Referring to the attached drawings 3-10, after the movable handle 10 is driven to lock and close the nail pushing seat 1 and the nail bin seat 3 provided with the nail bin 2, the movable handle 10 is continuously driven for a plurality of times after the clamping safety reset button 9 is pressed, the rack arranged in the fixed handle drives the driving sleeve 4-3 and the cutting knife pushing plate 4-4 to move forwards, the cutting knife 4-4 drives the pushing block 2-2, the pushing block 2-2 moves forwards to drive the pushing piece to ascend so as to form a suturing nail, and therefore the clamped tissue is sutured and cut.

Referring to the attached drawings 11-12, after the sewing and cutting are completed, the reset handle 7 is pulled backwards to enable the rack to drive the driving sleeve 4-3 to reset, and at the moment, a jaw formed by the nail abutting seat 1 and the nail bin seat 3 is opened. If the steps are repeated, the movable handle 10 is driven to close the jaw formed by the nail abutting seat 1 and the nail bin seat 3, the clamping safety reset button 9 is pressed down, when the movable handle 10 is driven again to fire, the fixed fork 4-6 slides onto the front platform 4-1-4 of the groove of the upper half shell from the rectangular initial boss 4-1-2 when not fired, jumps over the groove 4-1-3 and slides onto the platforms 4-1-6 at the two sides of the cutting knife groove through the slope to complete firing, and an empty nail bin is formed. When the driving sleeve 4-3 is pulled back, the cutting knife pushing plate 4-4 and the fixed fork 4-6 are driven to return together, at the moment, the fixed fork 4-6 firstly passes through the platforms 4-1-6 at the two sides of the cutting knife groove, then slides to the slope, finally passes through the front platform 4-1-4 of the groove and slides into the groove 4-1-3, the fixed fork 4-6 is enabled to abut against the front end surface step 4-1-1 of the groove under the action of the safety spring 4-7, at the moment, the driving sleeve 4-3 cannot be pushed, the cutting knife pushing plate 4-4 cannot continue to advance, the empty nail bin cannot be fired again, the misoperation of firing the empty nail bin in the operation process is avoided, and the safety insurance effect is achieved.