CN212996592U - Outward-turning type annular anastomat - Google Patents

Abstract

The utility model provides an outwards-turned annular anastomat, including nail anvil part and nail storehouse part, above-mentioned nail anvil part includes separable left nail stake and right nail stake, and above-mentioned left nail stake and above-mentioned right nail stake rotate to be connected, and above-mentioned nail storehouse part includes separable left nail storehouse and right nail storehouse, and above-mentioned left nail storehouse and above-mentioned right nail storehouse rotate to be connected. The utility model discloses a nail storehouse and nail casket, the cutting knife is divided two parts, it has the semi-ring cutter along with nail storehouse outer wall shape to settle in the nail storehouse, be a whole when the percussion, the semi-ring cutter pushes away along with ejector pin piece and accomplishes the operation of cutting off the unnecessary tissue in intestines tube outer lane when sewing up the nail, and can open and shut the operation along with the nail storehouse, can separately become two lamellas after the percussion, safe separation anastomat and intestines tube, this apparatus has easy operation's characteristics simultaneously, can singlehanded the operation of gripping, the apparatus is opened to singlehanded after the percussion, the operation step has been saved, reach the purpose that shortens operating time.

Description

Outward-turning type annular anastomat

Technical Field

The utility model relates to the field of medical equipment, further relate to alimentary canal anastomat field, in particular to formula annular anastomat turns up.

Background

The anastomat is a device widely used in medicine to replace manual suture, the main working principle is to cut and anastomose tissues by using titanium nails, and the anastomat is particularly suitable for operations of hollow organs such as esophagus, stomach, small intestine, large intestine, rectum and the like, and can be used for the operations of the hollow organs.

At present, a linear cutting anastomat and a circular anastomat are mainly used in an operation, a long pipe is arranged on a body of each of the linear cutting anastomat and the circular anastomat for conveniently extending into a human body, the circular anastomat is generally used for aiming at circular suture openings of cavity tissues such as esophagus, small intestine and the like, when the circular anastomat is used for performing lumen tissue anastomosis, one end of the lumen tissue is firstly sewed with a purse, then a nail anvil cap is embedded, a small opening is formed in the lumen tissue at the other end, and the circular anastomat is inserted for anastomosis.

However, the problems of the prior art solutions are as follows: the side wall incision needs to be closed after the end-to-end anastomosis is finished, so that the chances of intestinal tract operation trauma and operation pollution are increased, bleeding and foreign body residue are easily caused, the side wall incision is inverted during anastomosis, a gap exists between a mucous membrane layer and the mucous membrane layer, and hidden troubles are buried when the fistula occurs in the postoperative anastomotic stoma.

A circular anastomat is a mechanical digestive tract reconstruction operation tool developed in nearly two thirty years, mainly uses titanium or tantalum metal nails to fix intestinal tissues, compared with the traditional manual suture of needle threads, the anastomat can simplify the operation process, shorten the operation time, enable operations with difficult exposure and small operation space to be simpler and more convenient, is in an inverted anastomosis mode, needs to completely place a nail bin assembly in the intestinal tract during working, applies pressure to enable intestinal serosa at two ends to be attached, then triggers the metal nails to fix soft tissues, cuts off redundant residual ends to form digestive tract reconstruction, is the same as the needle thread suture, needs suture materials in the anastomosis process, and inevitably brings inflammatory reaction to the human body.

The ideal tissue repair is that the tissue defect is completely repaired by cells with the original property, and the original tissue structure and function are restored, namely the tissue defect is completely repaired, so that the modern suture technology emphasizes suturing according to anatomical layers, correctly closing and suturing tissues of the same type, improving the healing quality of wounds, and restoring the original anatomical structure and physiological function of the wounds. The intestinal section tissue is mainly divided into three layers of serous membrane, muscle layer and mucosa from outside to inside, and the layer-by-layer involution suture is the most ideal tissue repair mode, but in the clinical use process, the difficulty degree of implementation and the balance of risk and income need to be considered.

In the existing everting anastomat, for example, in the prior art with the patent number of CN201510282427.X, a nail bin and a nail box are respectively an integer, after suturing, a nail anvil, the nail bin and a cutting knife need to be cut off by scissors, the instrument can be opened, the instrument and an intestinal canal tissue can be separated, and the nail anvil needs to bear the larger striking force generated by impacting and bending a suturing nail and cutting off the intestinal canal tissue by the cutting knife, so that the requirement on the material strength is met, and the method for cutting off the nail anvil and the annular knife of the nail bin is difficult to realize.

In addition, the conventional eversion stapler, for example, the prior art eversion stapler of patent No. CN201410461465.7, has complicated structure of the instrument, complicated operation, inability of one-handed operation, and high requirement for the user, and thus, it is difficult to perform the eversion stapling operation, and it does not have a cutting function, and it is necessary to perform a secondary cutting operation after removing the instrument.

Therefore, an outward-turning annular anastomat is needed to be provided to solve the technical problem that after the end-end anastomosis of the intestinal tract is completed by arranging the working part in the intestinal tract side wall incision, the side wall incision needs to be closed, so that the injury of the intestinal tract operation and the operation pollution risk are increased.

SUMMERY OF THE UTILITY MODEL

The utility model provides an outer formula annular anastomat that turns over to thereby at least solve among the prior art outer formula annular anastomat need be cut off when sewing up the back and breaking away from the tissue and increase the technical problem of intestinal operation wound and operation pollution risk.

The utility model provides an outwards-turned annular anastomat, including nail anvil part and nail storehouse part, above-mentioned nail anvil part includes separable left nail stake and right nail stake, and above-mentioned left nail stake and above-mentioned right nail stake rotate to be connected, and above-mentioned nail storehouse part includes separable left nail storehouse and right nail storehouse, and above-mentioned left nail storehouse and above-mentioned right nail storehouse rotate to be connected.

Optionally, the left nail anvil, the right nail anvil, the left nail bin and the right nail bin are all in a half-ring structure, the left nail anvil and the right nail anvil form an annular nail anvil, and the left nail bin and the right nail bin form an annular nail bin.

Optionally, the left nail bin and the right nail bin respectively comprise a left half ring groove and a right half ring groove, and the half ring cutters are respectively accommodated in the left half ring groove and the right half ring groove.

Optionally, the nail bin part further comprises a nail pushing fixing plate, a nail pushing bottom plate and a nail pushing sheet, wherein the nail pushing fixing plate and the nail pushing bottom plate respectively fix the semi-ring cutter and the nail pushing sheet in the left semi-ring groove and the right semi-ring groove.

Optionally, the nail pushing fixing plate and the nail pushing base plate are connected by a guide post, and the nail pushing fixing plate and the nail pushing base plate can reciprocate along the guide post.

Optionally, the nail anvil part further comprises a nail anvil fixing block, the left nail anvil and the right nail anvil are respectively fixed in the groove of the nail anvil fixing block, and the left nail anvil and the right nail anvil can rotate in the groove of the nail anvil fixing block.

Optionally, the left nail anvil and the right nail anvil are respectively fixed in the groove of the nail anvil fixing block by a pin, and the left nail anvil and the right nail anvil can rotate around the pin to be away from each other.

Optionally, the left nail anvil and the right nail anvil can rotate away from each other to an included angle of 90 degrees by taking the pin as an axis.

Optionally, the nail anvil portion further comprises a nail anvil positioning piece, the left nail anvil and the right nail anvil are combined into an annular nail anvil by the nail anvil positioning piece, the nail bin portion further comprises a nail bin positioning piece, and the left nail bin and the right nail bin are combined into an annular nail bin by the nail bin positioning piece.

Optionally, the left nail anvil and the right nail anvil are in a semi-ring symmetric structure, and the left nail bin and the right nail bin are in a semi-ring symmetric structure.

Divide into the two part structure that can open and shut with annular nail anvil, nail storehouse, ejector pin ware and cut-off knife, can open these two parts after the percussion, break away from tissue and apparatus, solved the anastomat that turns up and sew up the back and need open and break away from this problem of tissue, in addition, the utility model discloses technical scheme can be convenient will turn up the tissue and fix at the anastomat outer wall, has solved the tissue that turns up and need be tied up the problem of bag and fix in the anastomat outside, and the design of innovation has fixed system, has solved two problems of sewing up back and fixed tissue on the apparatus.

The utility model provides an above-mentioned not enough among the prior art provides an out-turning type annular anastomat, because the anastomat that turns up need be opened after sewing up and break away from the tissue, the utility model provides an out-turning type annular anastomat divide into two part structures that can open and shut with annular nail anvil, nail storehouse, ejector pin ware and cutting off cutter, can open these two parts after the percussion, breaks away from tissue and apparatus, and in addition, need beat the problem of purse-string fixing in the anastomat outside to the tissue that turns up, the utility model provides an out-turning type annular anastomat innovation design fixed system, can be convenient will turn up the tissue that will turn up and fix at the anastomat outer wall, so the utility model provides an out-turning type annular anastomat has solved two problems that break away from and fixed tissue after sewing up.

The utility model discloses technical scheme need not cut off a series of parts such as nail anvil, nail storehouse, annular sword, and itself possesses the ability of opening and shutting, and automatic positioning when coincideing is returned to initial condition after the completion is coincided, can open all parts that surround the intestines tube tissue, and separation apparatus and intestines tube can not destroy the apparatus, can not harm the intestines tube tissue yet. The utility model discloses technical scheme does not need additionally to play the lotus package, also need not accomplish the artifical unnecessary tissue that cuts off the intestines tube after coinciding, and the process of coinciding can be accomplished the operation of percussion titanium nail seam, the operation of redundant tissue is cut off to the semi-ring cutter, and it is not high to have a requirement to the user, easy and simple to handle, the characteristics that operating time is short, the utility model discloses technical scheme can carry out the end with the inlayer mucosa of two sections intestinal coincide to excision unnecessary tissue, simple structure, convenient to use, most operation process all can be accomplished by one hand, has solved technical problem such as bleeding and foreign matter remain among the prior art.

This creates a problem of how to separate the stapler after suturing, due to the need to suture the intestinal tube externally. The utility model discloses a nail storehouse and nail casket, cutting knife are divided two parts, and it has the semi-ring cutter along with nail storehouse outer wall shape to settle in the nail storehouse, is a whole when the percussion, and the semi-ring cutter is along with ejector pin piece top pushes away to close the operation of accomplishing the unnecessary tissue in intestinal canal outer lane when sewing up to can open and shut the operation along with the nail storehouse. After being fired, the anastomat can be separated into two pieces, and the anastomat and the intestinal canal can be safely separated. Meanwhile, the instrument has the characteristic of simple operation, can be held by one hand for operation, and can be opened by one hand after being fired, so that the operation steps are saved, and the purpose of shortening the operation time is achieved.

Drawings

The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present invention are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which:

fig. 1 is a schematic view of an alternative external-turning annular stapler according to an embodiment of the present invention;

FIG. 2 is a schematic view of an alternative anvil component according to an embodiment of the present invention;

FIG. 3-1 is a schematic view of an alternative staple cartridge component provided in accordance with an embodiment of the present invention;

fig. 3-2 is a schematic view of an optional left staple cartridge component provided in an embodiment of the present invention;

figure 4 is a schematic view of an alternative everting fixture provided by an embodiment of the present invention;

FIG. 5 is a schematic view of an alternative incremental launching firing device provided by an embodiment of the present invention;

fig. 6 is a schematic view illustrating a staple cartridge assembly with a semi-ring cutter installed in an optional semi-ring groove according to an embodiment of the present invention;

fig. 7 is a schematic view of an alternative and more convenient eversion fixture according to an embodiment of the present invention;

FIG. 8 is a schematic view of an alternative partially guided connection of the anvil and the staple cartridge provided in accordance with an embodiment of the present invention;

fig. 9 is a schematic view of an alternative valgus stapler firing completion separation mode provided by an embodiment of the present invention;

FIG. 10 is a schematic view of an alternative attachment of the stationary portion to the anvil portion according to an embodiment of the present invention;

FIG. 11 is a schematic view of an alternative anvil portion and closure portion attachment arrangement provided in accordance with an embodiment of the present invention;

FIG. 12 is a schematic view of an alternative connection between the staple cartridge portion and the closure portion provided in accordance with an embodiment of the present invention;

FIG. 13 is a schematic view of an alternative firing portion connection provided by an embodiment of the present invention;

FIG. 14-1 is a schematic view of an alternative embodiment of the present invention in which the fixation portion is adapted to an integral non-separable valgus stapler;

fig. 14-2 is a schematic diagram of an alternative fixation section fitting split valgus stapler according to an embodiment of the present invention;

figures 14-3 are schematic views of an alternative fastening portion adapted to other eversion staplers provided by embodiments of the present invention;

fig. 15 is a schematic view of an alternative manner of rotating and fixing the anvil according to an embodiment of the present invention.

Reference numerals:

the nail anvil comprises a nail anvil part 1, a left nail anvil 11, a right nail anvil 12, a nail anvil fixing block 13, a knife anvil 14, a first pin 131, a nail anvil positioning sheet 15, a threaded hole 114, a first groove 132 and a first positioning hole 113;

the nail bin comprises a nail bin part 2, a left nail bin 21, a right nail bin 22, a semi-ring cutter 211, a nail bin fixing block 23, a guide post 24, a nail bin positioning sheet 25, a nail pushing fixing plate 26, a nail pushing bottom plate 27, a nail pushing sheet 210, a second hole 232, a spring 241, an inner hexagonal flat end fastening screw 28, a limiting nut 29 and a second positioning hole 123;

the closing part 3, the rail connector 31, the handle rail 32, the first screw 36, the first hole 321, the third hole 311, the third screw 37, the second spring 361, the pressing plate 33, the handle rail pull rod 34, the locking pin 35, the second screw 38, the third positioning hole 321, and the locking block 362;

a firing portion 4, a firing frame 41, a second pin 46, a fourth hole 411, a fifth hole 412;

a fixing part 5, a fixing clip 51, a fixing hole 512, a fixing puncture needle 52, a locking screw 53, an integral fixing clip 6, an integral fixing clip puncture needle 61 and a sixth hole 111.

Detailed Description

The principles and spirit of the present invention will be described with reference to a number of exemplary embodiments. It should be understood that these embodiments are given solely for the purpose of enabling those skilled in the art to better understand and thereby implement the present invention, and are not intended to limit the scope of the invention in any way. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

This embodiment is shown in fig. 1 to 15.

The embodiment of the utility model provides an outwards-turned annular anastomat, including nail anvil part 1 and nail storehouse part 2, above-mentioned nail anvil part 1 includes separable left nail anvil 11 and right nail anvil 12, as shown in fig. 15, above-mentioned left nail anvil 11 and nail anvil fixed block 13 are connected, above-mentioned right nail anvil 12 is connected by pin 131 with nail anvil fixed block 13 to can rotate around pin 131, above-mentioned nail storehouse part 2 includes separable left nail storehouse 21 and right nail storehouse 22, and above-mentioned left nail storehouse 21 and above-mentioned right nail storehouse 22 rotate to be connected.

Further, the left nail anvil 11, the right nail anvil 12, the left nail bin 21 and the right nail bin 22 are all in a half-ring structure, the left nail anvil 11 and the right nail anvil 12 form an annular nail anvil, and the left nail bin 21 and the right nail bin 22 form an annular nail bin.

Further, the left nail magazine 21 and the right nail magazine 22 respectively include a left half ring groove 213 and a right half ring groove 223, and the left half ring groove 213 and the right half ring groove 223 respectively accommodate therein a half ring cutter 211, as shown in fig. 6.

Further, the magazine portion 2 further includes a staple fixing plate 26, a staple bottom plate 27, and staple sheets 210, wherein the staple fixing plate 26 and the staple bottom plate 27 fix the half-ring cutter 211 and the staple sheets 210 in the left half-ring groove 213 and the right half-ring groove 223, respectively.

Further, the staple fixing plate 26 and the staple base plate 27 are connected by a guide post 24, and the staple fixing plate 26 and the staple base plate 27 can reciprocate along the guide post 24.

Further, the nail anvil part 1 further comprises a nail anvil fixing block 13, the left nail anvil 11 and the right nail anvil 12 are respectively fixed in a groove of the nail anvil fixing block 13, and the left nail anvil 11 and the right nail anvil 12 can rotate in the groove of the nail anvil fixing block 13.

Further, the left anvil 11 and the right anvil 12 are respectively fixed in the groove of the anvil fixing block 13 by a pin 131, and the left anvil 11 and the right anvil 12 can rotate away from each other with the pin 131 as an axis.

Further, the left anvil 11 and the right anvil 12 can rotate away from each other to an angle of 90 degrees around the first pin 131.

Further, the nail anvil portion 1 further comprises a nail anvil positioning plate 15, the nail anvil positioning plate 15 combines the left nail anvil 11 and the right nail anvil 12 to form an annular nail anvil, the nail cartridge portion 2 further comprises a nail cartridge positioning plate 25, and the nail cartridge positioning plate 25 combines the left nail cartridge 21 and the right nail cartridge 22 to form an annular nail cartridge.

Further, the left anvil 11 and the right anvil 12 are in a semi-circular symmetric structure, and the left staple cartridge 21 and the right staple cartridge 22 are in a semi-circular symmetric structure.

Specifically, the present invention relates to an outwardly-turned circular stapler assembly comprising a component 5, such as a nail anvil portion 1, a nail cartridge portion 2, a closure portion 3, a firing portion 4 and a fastening portion 5, which are shown in fig. 1.

As shown in fig. 1 to 15:

the connection relationship among the five parts is as follows:

the fixing portion 5 is connected to the anvil portion 1, and the screw 53 passes through the hole 512 of the fixing clip 51 and is locked with the threaded hole 114 of the left anvil 11 of the anvil portion 1, so as to complete the fixing, as shown in fig. 10.

The connection relationship between the nail anvil part 1 and the closing part 3 is as follows: the first slot 132 of the anvil fixing block 13 is matched with the guide rail 32 of the closing part 3, and fixed with the hole of the anvil fixing block 13 through the first hole 321 of the guide rail 32 by the first screw 36, as shown in fig. 11.

The connection relationship between the nail bin part 2 and the closing part 3 is as follows: the cartridge fixing block 23 is engaged with the rail connecting member 31 and fixed to the third hole 311 of the rail connecting member 31 by the first screw 36 through the second hole 232 of the cartridge fixing block 23, as shown in fig. 12.

The connection relationship between the firing part 4 and the closing part 3 is as follows: the firing frame 41 is connected to the rail connecting member 31 by a second pin 46, and the second pin 46 is positioned by passing through the fourth hole 411 of the firing frame 41 and the hole of the rail connecting member 31, and is fixed to the fifth hole 412 of the firing frame 41 by passing through the rail connecting member 31 by a third screw 37, as shown in fig. 13.

The distinguishing technical characteristics are an anvil part 1, a nail box part 2 and a fixing part 5.

The above-mentioned anvil portion 1 includes: a left anvil 11, a right anvil 12, an anvil fixing block 13 and a knife anvil 14, as shown in fig. 2.

The above-mentioned anvil portion 1 functions as: the suturing nail is formed to assist the semi-ring cutter to cut off the intestinal canal tissue, and the outward turned intestinal canal tissue is fixed with the fixing clamp part.

The above cartridge section 2 includes: the left nail bin 21, the right nail bin 22, the nail bin fixing block 23, the guide pillar 24, the spring 241, the nail pushing fixing plate 26, the nail pushing bottom plate 27, the limiting nut 29, the nail pushing sheet 210 and the half-ring cutter 211 are shown in fig. 3-1.

The connection of the nail bin part 2 is as follows: the staple and the staple pusher 210 are accommodated in the groove of the left staple cartridge 21, the half-ring cutter 211 is accommodated in the half-ring groove, the half-ring cutter 211 and the staple pusher 210 are fixed between the staple fixing plate 26 and the staple pusher 27, the staple fixing plate 26 and the staple pusher 27 are connected by two guide posts 24, the staple fixing plate 26 and the staple pusher 27 can reciprocate along the guide posts 24, move forward under the force of the handle push rod to complete the firing operation, the spring 241 on the guide post 24 pushes the staple fixing plate 26 to return, and the position is limited by the limit nut 29 at the end of the guide post 24, as shown in fig. 8. The above components are composed of two identical parts, and are respectively installed on the left nail bin 21 and the right nail bin 22, when the left nail bin 21 is opened, the components installed in the left nail bin 21 also move together with the left nail bin 21, as shown in fig. 3-2.

The function of the cartridge section 2 described above: the staple is received, the tissue of the intestine is cut off, and the everted tissue of the intestine is fixed to the fixing portion 5.

In addition, the guidance and automatic retraction functions are embodied as: the utility model discloses formula annular anastomat turns up possesses accurate direction function, when closed, enable above-mentioned left nail anvil 11, above-mentioned right nail anvil 12 and above-mentioned left nail storehouse 21, the accurate counterpoint of above-mentioned right nail storehouse 22, four above-mentioned guide pillars 24 are fixed on above-mentioned left nail storehouse 21 and above-mentioned right nail storehouse 22 by hexagon socket head cap flat end holding screw 28, as shown in fig. 8, when closed, four above-mentioned guide pillars 24 get into in above-mentioned first locating hole 113 of above-mentioned left nail anvil 11 and the above-mentioned second locating hole 123 of above-mentioned right nail anvil 12, fix a position. The guide post 24 has a double-side guiding function, and when the trigger is triggered, the trigger fixing plate 26 and the trigger push plate 27 move forward along the guide post 24, and after the trigger action is completed, the trigger fixing plate retracts under the action of the spring 241 of the guide post 24, returns to the tail end of the guide post, and stops after reaching the limit nut 29, as shown in fig. 8.

Separation function: the utility model discloses turn-up formula annular anastomat is accomplishing the percussion back, possess quick convenient function with apparatus and sutured intestines tube separation, will be located above-mentioned nail anvil spacer 15 of above-mentioned right nail anvil 12 and open downwards, will be located above-mentioned nail storehouse spacer 25 on the above-mentioned right nail storehouse 22 and open downwards, can be with above-mentioned left nail anvil 11 and above-mentioned left nail storehouse 21 with above-mentioned nail anvil locating piece 13 and above-mentioned nail storehouse locating piece 23 as axle center upward rotation, the intestines tube 7 after sewing up can break away from with the apparatus, accomplish whole operating procedure, as shown in fig. 9.

The separated nail bin is in an open state as shown in fig. 15, the left nail anvil 11 is fixed in the groove of the nail anvil fixing block 13 by the first pin 131, and can be rotated and opened by 90 degrees by taking the first pin 131 as an axis, in a closed state, the operation of firing a suturing nail to suture can be completed, in an open state, the intestinal canal tissue can be taken out, and the effect of separating the instrument from the intestinal canal tissue can be achieved. The opening and closing mode is simple, and the operation can be completed by one hand without using an external instrument for auxiliary operation.

The above-mentioned closing part 3 includes: as shown in fig. 5, the rail connector 31, the handle rail 32, the pressing plate 33, the handle rail lever 34, the locking pin 35, the second spring 361, and the second screw 38.

The function of the above-mentioned closing part 3: the anvil portion 1 is closed and locked, and the firing portion 4 is connected.

The movement steps of the closing part 3 are as follows: after the intestinal tubes at the two ends are fixed on the anvil portion 1 and the nail magazine portion 2, the pull handle guide rail pull rod 34 moves backwards, the handle guide rail pull rod 34 drives the handle guide rail 32 to move in the groove formed by the handle guide rail connecting piece 31 and the pressing plate 33, the handle guide rail 32 drives the anvil portion 1 to be close to the nail magazine portion 2, and when the third positioning hole 321 of the handle guide rail 32 reaches the position of the locking pin 35, the locking pin 35 enters the positioning hole 321 of the handle guide rail 32 under the action of the second spring 361, so that the anvil portion 1 is positioned. When the opening limit is needed, the second screw 38 located at the lower part of the locking block 362 is pulled to drive the locking pin 35 to move downwards, so that the guide rail 32 moves forwards, and the anvil portion 1 can be disengaged, as shown in fig. 5.

The function of the firing part 4 is shown in figure 1: providing the firing force required to fire the staples.

The above-mentioned fixing portion 5 includes a fixing clip 51, a fixing clip piercing needle 52 and a locking screw 53 as shown in fig. 5. The locking screw 53 can lock the fixing clip 51 to the outer wall of the anvil 1. When in use, the fixing clip 51 and the fixing puncture needle 52 compress the everted tissue to achieve the function of fixing the tissue without a purse. The cut-off effect of the tissue after the eversion cannot be influenced by the forced contraction during the cut-off.

The above-mentioned fixed part 5 functions: the everted intestinal canal is respectively fixed on the outer surfaces of the nail anvil and the nail bin, and the support is provided for the semi-ring cutter to cut off the intestinal canal.

The fixing portion 5 can be simplified as an integral part as shown in fig. 7, and the fixing can be completed by inserting the integral fixing clip puncture needle 61 on the integral fixing clip 6 into the sixth holes 111 of the left anvil 11 and the right anvil 12 of the anvil portion 1 by utilizing the ductility of the plastic material.

The above-described realisation of the anchoring device of the anchoring portion 5 on other eversion staplers, as illustrated in figures 14-1, 14-2 and 14-3, is directly applicable in the corresponding position.

While the spirit and principles of the invention have been described with reference to several particular embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, nor is the division of aspects, which is for convenience only as the features in such aspects may not be combined to benefit. The invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims (10)

1. The utility model provides an outwards-turned annular anastomat, includes nail anvil part (1) and nail storehouse part (2), its characterized in that, nail anvil part (1) is including separable left nail anvil (11) and right nail anvil (12), left nail anvil (11) with right nail anvil (12) rotate to be connected, nail storehouse part (2) is including separable left nail storehouse (21) and right nail storehouse (22), left side nail storehouse (21) with right nail storehouse (22) rotate to be connected.

2. The outwardly-turned annular stapler according to claim 1, wherein the left anvil (11), the right anvil (12), the left staple cartridge (21) and the right staple cartridge (22) are all semi-ring structures, the left anvil (11) and the right anvil (12) form an annular staple cartridge, and the left staple cartridge (21) and the right staple cartridge (22) form an annular staple cartridge.

3. The external-turn annular stapler according to claim 2, characterized in that said left cartridge (21) and said right cartridge (22) comprise a left half-ring groove (213) and a right half-ring groove (223), respectively, said left half-ring groove (213) and said right half-ring groove (223) housing therein, respectively, a half-ring cutter (211).

4. The out-turned annular stapler according to claim 3, wherein the cartridge portion (2) further comprises a staple-fixing plate (26), a staple-bottom plate (27) and a staple-sheet (210), the staple-fixing plate (26) and the staple-bottom plate (27) fixing the half-ring cutter (211) and the staple-sheet (210) in the left half-ring groove (213) and the right half-ring groove (223), respectively.

5. The out-turned annular stapler according to claim 4, wherein the staple fastening plate (26) and the staple base plate (27) are connected by a guide post (24), the staple fastening plate (26) and the staple base plate (27) being reciprocally movable along the guide post (24).

6. The outward-turning annular anastomat according to claim 1, characterized in that, the nail anvil part (1) further comprises a nail anvil fixing block (13), the left nail anvil (11) and the right nail anvil (12) are respectively fixed in a groove of the nail anvil fixing block (13), and the left nail anvil (11) and the right nail anvil (12) can rotate in the groove of the nail anvil fixing block (13).

7. The outward-turning annular anastomat according to claim 6, characterized in that, the left nail anvil (11) and the right nail anvil (12) are respectively fixed in the groove of the nail anvil fixing block (13) by a pin (131), and the left nail anvil (11) and the right nail anvil (12) can rotate around the pin (131) and are far away from each other.

8. The outwardly-turned annular stapler according to claim 7, characterized in that said left anvil (11) and said right anvil (12) can rotate away from each other to an angle of 90 degrees around said pin (131).

9. The outwardly-turned annular stapler according to claim 2, wherein the anvil portion (1) further comprises an anvil positioning plate (15), the left anvil (11) and the right anvil (12) are combined by the anvil positioning plate (15) to form an annular anvil, the cartridge portion (2) further comprises a cartridge positioning plate (25), and the left cartridge (21) and the right cartridge (22) are combined by the cartridge positioning plate (25) to form an annular cartridge.

10. The flip-up circular stapler according to any one of claims 1 to 9, wherein the left anvil (11) and the right anvil (12) are of a semi-circular symmetrical structure, and the left cartridge (21) and the right cartridge (22) are of a semi-circular symmetrical structure.

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