CN102551834A

CN102551834A - Digestive tract anastomat

Info

Publication number: CN102551834A
Application number: CN2012100406887A
Authority: CN
Inventors: 吴伟敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-02-22
Filing date: 2012-02-22
Publication date: 2012-07-11
Anticipated expiration: 2032-02-22
Also published as: CN102551834B

Abstract

The invention relates to a digestive tract anastomat, which comprises a screw abutting seat component and a screw pushing device. The screw pushing device comprises a screw barrel component, an anastomat body and the like. The screw barrel component comprises anastomosis screws, a screw bin cover and a screw bin sleeve. The screw bin cover is connected onto the screw bin sleeve, and the anastomosis screws are placed in corresponding screw bin holes of the screw bin sleeve. The screw abutting seat component comprises a seat cap, a scalpel gasket, a positioning clamp spring tube and a screw abutting seat. The screw abutting seat is a steel integral part with a central step hole and comprises a seat body main portion and a connecting portion connected to the center of the lower side of the seat body main portion. Three circles of screw grooves which are distributed in a concentric circles manner are arranged on the upper end surface of the seat body main portion from inside to outside. The upper end surface of the seat body main portion of the screw abutting seat is in the shape of a step with the low outside and the high inside, and all the screw grooves on the third circle are arranged on the lower portion of the outer side of the upper end surface of the seat body main portion; or the lower end surface of the screw bin cover is in the shape of a step with the high outside and the low inside, and the anastomosis screws on the outermost circle in the screw bin cover are distributed in the higher portion of the outer side of the step of the screw bin cover.

Description

Digestive tract stapler

Technical field

The present invention relates to a kind of medical apparatus and instruments, relate to a kind of digestive tract stapler that tubular tissue in the human body alimentary canal is coincide especially.

Background technology

The surgeon is after a part of carrying out the tubular tissues of human body such as intestinal, esophagus undergos surgery excision, and in the time of the tubular tissue that stay being connected, its usual way is to connect through anastomat with special anastomosis staple.Digestive tract stapler mainly comprises pushing device and is connected the nail supporting base assembly on the pushing device; The operator is after the preparation of carrying out the percussion anastomat; During cocking percussion anastomat; Then make two stoma sites that will coincide pushing device pin passes the needs butt joint of the tubular tissue of human body be pushed in the nail supporting base of nail supporting base assembly, make coincide two terminations of pin curve inwardly, and two stoma sites of tubular tissue are linked together.The nail supporting base of present digestive tract stapler is provided with 2 circle nail grooves; Be provided with in the corresponding pushing device and cooperate the 2 circle anastomosis staples that distribute; Such digestive tract stapler usually also need be in the anastomotic stoma periphery with one week of suture interrupted suture after percussion is accomplished, and the purpose of doing like this is in order to reinforce anastomotic stoma; The 2nd, prick anastomotic stoma blood vessel on every side in order to stitch, prevent that anastomotic stoma inside is hemorrhage.But such operation process exists following drawback; The one, obviously prolonged the operating time of operation, the 2nd, suture was reinforced secret meeting and was caused anastomotic stenosis after surgery around anastomotic stoma, and the 3rd, be the ten minutes difficulty in the artificial anastomotic stoma of reinforcing of the anastomotic position that is difficult to expose; Particularly in endoscope-assistant surgery; After digestive tract stapler percussion is accomplished, can't carry out artificial suture and reinforce, so just stay the hidden danger of the hemorrhage or anastomotic leakage of anastomotic stoma.All adopt 2 circle nail grooves of circumferential distribution like the nail supporting base of Chinese patent document CN2889184Y (application number is 200620057832.2) and the disclosed digestive tract stapler of CN2664596Y (application number is 200320110196.7).

Chinese patent document CN1915180B discloses a kind of surgical stapling that comprises the nail bin with multiple seam nail dimension; This anastomat is made up of nail supporting base assembly and pushing device; The nail supporting base of its nail supporting base assembly comprises the nail groove that three circles are highly consistent; The nail bin of pushing device comprises the tissue contacting surface of three circle differing heights; The tissue contacting surface of three circle differing heights is provided with the maintenance groove of being used to keep to perform the operation seam nail; The length of the seam nail in the maintenance groove of first tissue contacting surface is different from the length of the seam nail in the maintenance groove of second and third tissue contacting surface, and the length of the seam nail in the maintenance groove of second tissue contacting surface is different from the length of the seam nail in the maintenance groove of the 3rd tissue contacting surface.The nail bin of above-mentioned anastomat has the tissue contacting surface of three circle differing heights; And the height of the contact surface of corresponding nail supporting base is consistent; But when the seam with different length was followed closely in fitting into the corresponding nail groove of pushing device, because the distance between nail groove and the nail groove is very little, the assembly crewman very easily was assembled to suture needle in the wrong nail groove; Thereby make anastomat that problem take place in use, and might cause corresponding malpractice.

Summary of the invention

Technical problem to be solved by this invention provides a kind of digestive tract stapler; When using, the nail supporting base of this anastomat matches with corresponding pushing device; Thereby make this digestive tract stapler need not be again after percussion around anastomotic stoma one week of suture, and the connection of anastomotic stoma meets the Human Physiology requirement.

The technical scheme that realizes the object of the invention provides a kind of nail supporting base; This nail supporting base is a steel integral piece with central stepped bore, is made up of pedestal principal part that is positioned at the upside periphery and the connecting portion that is connected on the pedestal principal part and be positioned at the central lower of pedestal principal part.

The pedestal principal part is provided with medium pore, and this medium pore is the part of the central stepped bore of nail supporting base.The pedestal principal part has the interior all sides that constitute its medium pore.The pedestal principal part also have be positioned at this top, all sides and the upper surface of intersecting with this all side, be positioned at the upper surface outside side-lower and with the crossing circumferential lateral surface in this upper surface.Above-mentioned circumferential lateral surface is made up of arcwall face that sets gradually from top to bottom and up big and down small frustum cone side, and above-mentioned arcwall face and frustum cone side seamlessly transit.

Connecting portion is the tabular position that is provided with medium pore, and above-mentioned medium pore also is the part of the central stepped bore of nail supporting base.The upper surface of connecting portion at grade; Connecting portion comprises the position, radially outer ring that is connected with the pedestal principal part, around radially inner ring position that medium pore is provided with at radially position, outer ring and the radially intermediate location between the inner ring position, and radially the lower surface at inner ring position is lower than the radially lower surface at position, outer ring.The intermediate location of connecting portion is the position that thickness of slab edge direction is from outside to inside changed from small to big, and the shape of its circumferential lateral surface is made up of with the up big and down small frustum cone side that links to each other with cylindrical side from the below the cylindrical side that is positioned at the top.

The upper surface of pedestal principal part 11 is provided with 3 circles from inside to outside and is the nail groove that concentric circular distributes, and they are followed successively by the 1st circle nail groove, the 2nd circle nail groove and the 3rd circle nail groove.The nail groove of first lap is spaced apart around the central stepped bore equal angles, and each nail groove of second circle is distributed in the outsides between adjacent two nail grooves of first lap, each nail groove of the 3rd circle outsides between two adjacent nail grooves of second circle that distribute.The quantity of the nail groove of each above-mentioned circle is 7 to 20.

The circumferential lateral surface maximum gauge b1 of pedestal principal part is 22 to 27mm, and minimum diameter b2 is 12 to 18mm.The diameter b 3 of the intermediate location periphery maximum of connecting portion is 13 to 17mm, and the diameter b 4 at minimum place is 8 to 12mm.The central stepped bore of nail supporting base comprises upper-side hole section, interstitial hole section and lower-side hole section.The diameter of interstitial hole section than the diameter big 0.4 of upper-side hole section to 0.8mm.The diameter of lower-side hole section than the diameter little 0.8 of interstitial hole section to 12mm.

The upper surface of pedestal principal part totally is annular.The height of the upper surface of pedestal principal part is consistent, perhaps is outer low and inner high stepped.

When the upper surface of pedestal principal part is outer low and inner high when stepped, thereby this upper surface is divided into high stage portion that is positioned at inner ring and the low stage portion that is positioned at the outer ring, and the height a at ladder place is 0.2mm to 0.5mm.The nail groove of the nail groove of above-mentioned first lap and second circle is positioned on the high stage portion of upper surface, and the nail groove of the 3rd circle is positioned on the low stage portion of upper surface.

A kind of digestive tract stapler is provided, comprises nail supporting base assembly and pushing device.The nail supporting base assembly comprises nail supporting base, seat medicated cap and locator card reed pipe.The seat medicated cap is positioned at the nail supporting base below and is fixed on the nail supporting base.Locator card reed pipe coaxial line is fixed on the nail supporting base.

Pushing device comprises nail cartridge module, anastomat body, Handleset, apical axis assembly, push-rod assembly and Control Component.The nail cartridge module comprises the nail bin cover and is arranged on the ejector pin member in the nail bin cover.The nail cartridge module is fixedly connected with the lower end of the bend pipe of anastomat body by the upper end of the shell of its nail bin cover.The upper end of bend pipe is fixedly connected with the lower end of the fixed handle of anastomat body.The adjusting nut of Control Component is enclosed within on the upper end of fixed handle, be rotationally connected with fixed handle, and both is spacing each other in the axial direction.The apical axis assembly comprises according to from bottom to up order be fixedly connected sequentially apical axis, strip flexure strip and tailing axle together.Push-rod assembly is enclosed within on the apical axis by the body of its push rod, and on tailing axle, and apical axis assembly and push-rod assembly stretch in the bend pipe and fixed handle of anastomat body by its cell body semi-surrounding, thereby make push rod and apical axis assembly be slidingly connected vertically.Apical axis passes the central body of nail bin cover, and apical axis is stretched in the locator card reed pipe of nail holder assembly and is positioned removable the blocking of jump ring pipe and locatees by its underpart.The locator card reed pipe cooperates with the center hub bulk phase of nail bin cover.Push rod is withstood on by the lower end of its body on the position, upper end of each push pedal of ejector pin board of ejector pin member of nail cartridge module.The flexible handle and the fixed handle of Handleset are rotationally connected, and insert the preceding slot that is arranged in the both sides, front and back and back slot of the cell body of push rod by its forked end portions.Tailing axle is threaded with adjusting nut by the external screw thread of its upper rod section.Nail supporting base is a steel integral piece with central stepped bore, is made up of pedestal principal part that is positioned at the upside periphery and the connecting portion that is connected on the pedestal principal part and be positioned at the central lower of pedestal principal part.

The upper surface of pedestal principal part is provided with 3 circles from inside to outside and is the nail groove that concentric circular distributes, and they are followed successively by the 1st circle nail groove, the 2nd circle nail groove and the 3rd circle nail groove.The nail groove of first lap is spaced apart around the central stepped bore equal angles, and each nail groove of second circle is distributed in the outsides between adjacent two nail grooves of first lap, each nail groove of the 3rd circle outsides between two adjacent nail grooves of second circle that distribute.The quantity of the nail groove of each above-mentioned circle is 7 to 20.

The nail cartridge module also comprises anastomosis staple, nail bin lid and endless knife.

The nail bin cover is linked to each other successively with central body and is constituted by shell, connection gusset; And the center hub body is positioned at enclosure; Connecting gusset has 2 to 6, and each connects gusset and is provided with at interval around central body equal angles, is connected between the middle and upper part of middle and upper part and central body of shell.

The lower surface of nail bin lid totally is annular, and the integral body of nail bin lid is cylindric, and the nail bin lid constitutes by cylindrical shell with around the edge of the outside chime rings shape of lower end part of cylindrical shell.Be provided with 3 circles that connect up and down according to from inside to outside order on the cylindrical shell of nail bin lid and be the nail bin hole that concentric circular distributes.And it is corresponding that nail bin covers the position of each set on position and the pedestal principal part in nail bin hole of set each circle nail groove that encloses.Nail bin lid stretch into from bottom to top by its cylindrical shell in the shell of nail bin cover and with its tight fit, the nail bin lid is contacted by the lower surface of the shell that the upper surface at its edge and nail bin overlap.

The ejector pin member is made up of ejector pin board, connecting portion and pushing slice of nail portion.Above-mentioned ejector pin board has 2 to 6 push pedals, and the quantity of push pedal is identical with the quantity of the connection gusset of nail bin cover.Each piece push pedal is spaced apart with angle same along same circumference, and each push pedal is connected on the connecting portion that is positioned at the below by separately lower end part respectively.Above-mentioned pushing slice of nail portion is connected from the below on the connecting portion by the pushing slice of nail of each vertical setting and constitutes; And all pushing slice of nail are scattered in 3 circle pushing slice of nail successively along 3 concentric circulars; The quantity of the pushing slice of nail of each circle is all identical with the quantity of the nail groove of each circle of nail supporting base and be provided with according to the mode of angle uniformly-spaced; And it is corresponding that the position of the pushing slice of nail of set each circle and nail bin cover the position in nail bin hole of each set circle on the ejector pin member, so with the pedestal principal part on the position of set each nail groove that encloses corresponding.The ejector pin member is arranged in the nail bin cover, and between the shell and central body of nail bin cover, and can slide up and down with respect to the nail bin cover, the lower end of each pushing slice of nail of ejector pin member stretches in the corresponding nail bin hole of nail bin lid as the ejector pin position from top to bottom.

Endless knife is fixed on the connecting portion of ejector pin member, and the edge of a knife of endless knife down.

Each anastomosis staple is arranged in a corresponding nail bin hole of nail bin lid, and is positioned at the below of a corresponding pushing slice of nail of ejector pin member.

The upper surface of the pedestal principal part of the nail supporting base of nail supporting base assembly totally is annular, and is outer low and inner high stepped, thereby this upper surface is divided into high stage portion that is positioned at inner ring and the low stage portion that is positioned at the outer ring, and the height a at ladder place is 0.2mm to 0.5mm.The nail groove of the nail groove of above-mentioned first lap and second circle is positioned on the high stage portion of upper surface, and the nail groove of the 3rd circle is positioned on the low stage portion of upper surface.The height of the lower surface of the nail bin lid of nail cartridge module is consistent, and the height and position that three circle anastomosis staples distribute is consistent.

The upper surface of the pedestal principal part of the nail supporting base of nail supporting base assembly totally is annular, and the height of upper surface is consistent.It is high outside and low outside stepped that the lower surface of the nail bin lid of nail cartridge module is; The height a at ladder place is 0.2mm to 0.5mm; And the anastomosis staple of the outmost turns in the nail bin lid is distributed in the higher position, its outside, ladder place, and the height and position that distributed at the nail bin lid of the anastomosis staple of outmost turns is than the high 0.2mm to 0.5mm of the height and position that anastomosis staple distributed of inner ring.

The circumferential lateral surface maximum gauge b1 of the pedestal principal part of the nail supporting base of nail supporting base assembly is 22 to 27mm, and minimum diameter b2 is 12 to 18mm.The diameter b 3 of the intermediate location periphery maximum of connecting portion is 13 to 17mm, and the diameter b 4 at minimum place is 8 to 12mm.

The central stepped bore of nail supporting base comprises upper-side hole section, interstitial hole section and lower-side hole section.The diameter of interstitial hole section than the diameter big 0.4 of upper-side hole section to 0.8mm.The diameter of interstitial hole section than the diameter big 0.8 of lower-side hole section to 1.2mm.

The nail supporting base assembly also comprises knife washer.Knife washer is the plastics integral piece.Knife washer is linked to each other successively with outer ring portion and constitutes along, inner ring portion by the pad knife-edge, and outer ring portion is provided with and links together from top and inner ring portion around inner ring portion, pad knife-edge edge for the inner ring subordinate hold to projecting inward position.Knife washer is contacted with the upper surface of the connecting portion of nail supporting base by the lower surface on its pad knife-edge edge.Knife washer is also contacted with the hole wall of the upper-side hole section of the pedestal principal part of nail supporting base by the lateral surface of its outer ring portion, thereby elasticity is arranged on the nail supporting base.

The anastomat body also comprises 2 clamping rings.2 clamping rings are divided into clamping ring and last clamping ring down.Nail bin cover is enclosed within on the lower end of bend pipe and both interference fits by the upper end of its shell, on the outside of and bend pipe outside in the upper end of the shell of nail bin cover by clamping ring gripping sleeve down, be fixedly connected with bend pipe thereby nail bin is overlapped.The lower end of fixed handle is enclosed within on the upper end of bend pipe, and on the outside of and bend pipe outside in the lower end of fixed handle by last clamping ring gripping sleeve, and fixed handle is fixedly connected with bend pipe.

Push-rod assembly also comprises press strip.Push rod and press strip are the plastics integral piece.Push rod is made up of the body, the body of rod and the cell body that link to each other successively from bottom to up.The body of rod of the push rod shape that totally is convexly curved.The cell body of push rod is half-surrounded from right to left; And cell body becomes 90 degree to link to each other and constitute by front side board, right plate and back side panel successively; Preceding slot is to be opened in gap between above-mentioned front side board and the right plate, and back slot is to be opened in above-mentioned right plate and the gap between the back side panel.Semi-surrounding is on the lower rod section of tailing axle from right to left for the cell body of push rod, and both can relative motioies.

Press strip is arranged on the left side of the strip flexure strip of apical axis assembly.

The apical axis of above-mentioned apical axis assembly is the steel integral piece, is linked to each other successively from bottom to up with last shaft part and is constituted by top, following shaft part, middle shaft part.Above-mentioned position, upper end of going up shaft part is provided with opening inserting groove and corresponding riveted holes up.The diameter of middle shaft part is less than last shaft part.The diameter of following shaft part is less than middle shaft part.Toply be conical basically, its cone tip part position down, the diameter of top bottom surface towards the top and the equal diameters of middle shaft part.Above-mentioned strip flexure strip is folded mutually by two whole steel bands and is constituted.Tailing axle is the steel integral piece, is connected from the below on the upper rod section by lower rod section and constitutes, and above-mentioned upper rod section is provided with external screw thread, and lower rod section is a polished rod, and the lower end part of lower rod section is provided with inserting groove and the corresponding riveted holes that Open Side Down.The lower end of strip flexure strip is sandwiched in the inserting groove at position, upper end of last shaft part of apical axis, and passes corresponding riveted holes and with strip flexure strip and apical axis riveted and fixed together by rivet.The upper end of strip flexure strip is sandwiched in the inserting groove of lower end part of lower rod section of tailing axle, and passes corresponding riveted holes and with strip flexure strip and tailing axle riveted and fixed together by rivet.

The fixed handle of anastomat body is made up of procapsid and back casing, and procapsid and back casing are the integrated through injection molding part.Procapsid is fastened on backward and then constitutes fixed handle on the back casing.

Handleset also comprises handle pin, reduction torsion spring, torsion spring backing pin and guard shield.Flexible handle comprises the front side board, connecting plate and the back side panel that link to each other successively for the whole steel integral piece that is bending shape, also comprises the torsion spring baffle plate that is connected from the place ahead on the back side panel.All have pin shaft hole on front side board and the back side panel, and the right-hand member position of the right-hand member position of front side board and back side panel all grows connecting plate to the right, thereby form the forked end portions of flexible handle.Guard shield is the integrated through injection molding part, tightly covers on outside the left-hand portion of flexible handle with the form of semi-surrounding, and is positioned at the left of flexible handle.

Handle pin passes the pin shaft hole of back side panel of pin shaft hole, reduction torsion spring, the flexible handle of the front side board of flexible handle successively, and forms the main body of Handleset.Being fastened on back casing at the procapsid with fixed handle goes forward; Earlier above-mentioned main body of passing the Handleset of handle pin is stretched into by the rear end of its handle pin in the opening handle pin-and-hole forward on the back casing of fixed handle, again with the front end of handle pin by on the handle pin borehole jack backwards of the opening on the procapsid of fixed handle.

After reduction torsion spring is enclosed within on the handle pin, and one of which root spring foot is against on the torsion spring baffle plate of flexible handle, and another root spring foot is against on the torsion spring backing pin.

Torsion spring backing pin whole cylindrical, the back pin section of torsion spring backing pin are inserted in the opening semi-circular hole up of torsion spring key seat of back casing of fixed handle, and the torsion spring backing pin is contacted with an above-mentioned spring foot of reduction torsion spring by pin section before it.

Above-mentioned digestive tract stapler also comprises insurance institution.Insurance institution comprises safety block, safety block bearing pin and torsion spring.Safety block is provided with torsional spring slot.Torsion spring is arranged in the torsional spring slot of safety block.The safety block bearing pin passes safety block and torsion spring, and the termination is stretched in the back casing of fixed handle thereafter, and front end stretches in the procapsid, thereby safety block is rotatably connected on the fixed handle through the safety block bearing pin.Spring foot of torsion spring and safety block Elastic Contact, the handle pin Elastic Contact of another root spring foot and flexible handle.

The present invention has positive effect: the nail supporting base of (1) digestive tract stapler of the present invention through 3 circles up and down dislocation be nail groove that concentric-ring pattern is interspersed or nail bin lid through the design that is the nail bin hole that concentric-ring pattern is interspersed of dislocation up and down of 3 circles; Make that using anastomat of the present invention need not one week of suture around anastomotic stoma after coincideing; Reduced the operating time of operation undoubtedly; And the tissue bond around the anastomotic stoma is good, the hidden danger that the hemorrhage or anastomotic stoma of anastomotic stoma has leak source can not occur.

(2) of the present invention gastrointestinal stapler anvil through the upper end face of the outer ring of the staple slots within which the horizontal plane is less than the staple ring groove 2 of the cartridge with the lower end face of the cover with horizontal height distribution cartridge with the horizontal hole and the height distribution in the staple cartridge or the anvil through the upper end surface of the staple height distribution with the horizontal groove with the staple cover the lower end face of the outer ring of the staple cartridge where the hole above the horizontal plane within two circles holes and staple cartridge compartment outermost staple within which the water level is higher than 2 laps staple.During use; Thereby the mucosa of digestive tract wall that is in the nail groove place of outmost turns is tightened Shi Buhui at anastomat and is caused the consequence that tissue necrosis comes off to occur by excessive compression, and when coincideing operation, the compressing degree between the digestive tract of folding mutually up and down herein is suitable; Anastomosis staple can normally pass folded mutually digestive tract; Its head upper groove surface along the nail groove in the nail groove is crooked, and anastomosis staple is " B " shape at this moment, thereby folded mutually up and down digestive tract fixation of tissue is linked together; And the extruding degree between the folded mutually up and down digestive tract tissue is suitable, and the rehabilitation efficacy after coincideing is better.

(3) length of all anastomosis staples in the nail bin of digestive tract stapler of the present invention is identical, and is comparatively convenient during the assembling anastomosis staple, only needs to adopt the anastomosis staple with a kind of specification to get final product, and the potential safety hazard the when anastomat that assembling is accomplished uses is also less.

(4) the preferred titanium alloy material of the material of the anastomosis staple of digestive tract stapler of the present invention; The hardness of anastomosis staple that its hardness is used for the anastomat of two circle nail grooves than before strengthens to some extent; When so anastomosis staple of the present invention is B shape after through the operation that coincide, fastness higher being difficult for strutted by the anastomotic stoma tissue.

Description of drawings

Fig. 1 is a kind of structural representation of digestive tract stapler of the present invention;

Fig. 2 is the cross-sectional view of Fig. 1;

Fig. 3 is the nail supporting base assembly and the enlarged diagram of following closely cartridge module among Fig. 2;

Fig. 4 is a kind of perspective view of nail supporting base among Fig. 1;

Fig. 5 is the structural representation when observing from the rear of Fig. 4;

Fig. 6 is the structural representation when the left anterior-superior part of Fig. 4 is observed;

Fig. 7 is the A-A face cutaway view of Fig. 6;

Fig. 8 is a kind of structural representation of anastomat in the embodiments of the invention 2;

Fig. 9 is the cross-sectional view of Fig. 8;

Figure 10 is the nail supporting base assembly and the enlarged diagram of following closely cartridge module among Fig. 9;

Figure 11 is a kind of perspective view of nail supporting base among Fig. 8.

Labelling in the above-mentioned accompanying drawing is following:

Nail supporting base assembly 1, nail supporting base 11, pedestal principal part 11a, connecting portion 11b, central stepped bore 11-1, upper-side hole section 11-1-1; Interstitial hole section 11-1-2, lower-side hole section 11-1-3, upper surface 11-2, high stage portion 11-2a, low stage portion 11-2b; The 1st circle nail groove 11-2-1, the 2nd circle nail groove 11-2-2, the 3rd circle nail groove 11-2-3, circumferential lateral surface 11-3, arcwall face 11-3-1; Frustum cone side 11-3-2, position, outer ring 11-4 radially, lower surface 11-4-1, intermediate location 11-5, cylindrical side 11-5-1; Frustum cone side 11-5-2, inner ring position 11-6 radially, lower surface 11-6-1, connecting hole 11-7

Seat medicated cap 12, joint pin 12-1, knife washer 13 fills up knife-edge along 13-1, the 13-2 of inner ring portion, the 13-3 of outer ring portion, locator card reed pipe 14, protrusion position 14-1,

Nail cartridge module 2, anastomosis staple 21, nail bin lid 22, edge 22-1, cylindrical shell 22-2; Endless knife 23, ejector pin member 24, ejector pin board 24-1, connecting portion 24-2, the 24-3 of pushing slice of nail portion; The 1st circle pushing slice of nail 24-3-1, the 2nd circle pushing slice of nail 24-3-2, the 3rd circle pushing slice of nail 24-3-3, nail bin cover 25; Shell 25-1 connects gusset 25-2, central body 25-3

Anastomat body 3, bend pipe 31, fixed handle 32, procapsid 32-1, back casing 32-2, following clamping ring 33, last clamping ring 34,

Handleset 4, flexible handle 41, forked end portions 41-1, handle pin 42, reduction torsion spring 43, torsion spring backing pin 44, guard shield 45,

Apical axis assembly 5, apical axis 51, top 51-1, following shaft part 51-2, middle shaft part 51-3, last shaft part 51-4, strip flexure strip 52, tailing axle 53, lower rod section 53-1, upper rod section 53-2,

Push-rod assembly 6, push rod 61, body 61-1, body of rod 61-2, cell body 61-3, press strip 62,

Control Component 7, adjusting nut 71,

Insurance institution 8, safety block 81, safety block bearing pin 82.

The specific embodiment

(embodiment 1)

See Fig. 1 and Fig. 2, the digestive tract stapler of present embodiment is made up of nail supporting base assembly 1 and pushing device.Pushing device comprises nail cartridge module 2, anastomat body 3, Handleset 4, apical axis assembly 5, push-rod assembly 6, Control Component 7 and insurance institution 8.

See Fig. 3, nail supporting base assembly 1 comprises nail supporting base 11, seat medicated cap 12, knife washer 13 and locator card reed pipe 14.

See Fig. 4 to Fig. 7, nail supporting base 11 is the steel integral pieces with central stepped bore 11-1, by the pedestal principal part 11a that is positioned at the upside periphery be connected that pedestal principal part 11a goes up and the connecting portion 11b that is positioned at the central lower of pedestal principal part 11a forms.

Pedestal principal part 11a integral body is overlooked and is annular, and pedestal principal part 11a is provided with medium pore, and this medium pore is the part of the central stepped bore 11-1 of nail supporting base 11.Pedestal principal part 11a has the interior all sides that constitute said medium pore, the circumferential lateral surface 11-3 that is positioned at this top, all sides and the upper surface 11-2 that intersects with this all side, is positioned at the outer side-lower of upper surface 11-2 and intersects with this upper surface 11-2.Said circumferential lateral surface 11-3 is made up of arcwall face 11-3-1 that sets gradually from top to bottom and up big and down small frustum cone side 11-3-2; Said arcwall face 11-3-1 and frustum cone side 11-3-2 seamlessly transit; Circumferential lateral surface 11-3 maximum gauge b1 is 24.5mm, and minimum diameter b2 is 15mm.

Connecting portion 11b is the tabular position that is provided with medium pore and connecting hole 11-7, and said medium pore also is the part of the central stepped bore 11-1 of nail supporting base 11.The upper surface of connecting portion 11b at grade; The radially inner ring position 11-6 that connecting portion 11b comprises the radially outer ring position 11-4 that is connected with pedestal principal part 11a, be provided with around medium pore and at radially position, outer ring 11-4 and radially the intermediate location 11-5 between the 11-6 of inner ring position; And the thickness of slab of said radially outer ring position 11-4 is thin (length of upward and downward is less); The thickness of slab of inner ring position 11-6 thicker (length of upward and downward is bigger) radially, also promptly radially the lower surface 11-6-1 of inner ring position 11-6 be lower than the radially lower surface 11-4-1 of position, outer ring 11-4.The intermediate location 11-5 of connecting portion 11b is the position that thickness of slab edge direction is from outside to inside changed from small to big, and the shape of its circumferential lateral surface is made up of with the up big and down small frustum cone side 11-5-2 that links to each other with cylindrical side 11-5-1 from the below the cylindrical side 11-5-1 that is positioned at the top.The diameter b 3 of intermediate location 11-5 periphery maximum is 15mm, and the diameter b 4 at minimum place is 9.42mm.

The central stepped bore 11-1 of nail supporting base 1 comprises that upper-side hole section 11-1-1, diameter are than the interstitial hole section 11-1-2 of the big 0.6mm of diameter of upper-side hole section 11-1-1 and the diameter lower-side hole section 11-1-3 than the little 10.2mm of diameter of interstitial hole section 11-1-2.Wherein, said upper-side hole section 11-1-1 and interstitial hole section 11-1-2 constitute the medium pore of pedestal principal part 11a, and lower-side hole section 11-1-3 is the medium pore of connecting portion 11b.

The connecting hole 11-7 of connecting portion 11b has 2, divides to be symmetrical set in the both sides of the medium pore of connecting portion 11b, and connects connecting portion 11b from above-below direction, and connecting hole 11-7 is used for the installation of a medicated cap 12.

See Fig. 4 to Fig. 7, the upper surface 11-2 of pedestal principal part 11a is an annular basically, and is outer low and inner high stepped, thereby this upper surface 11-2 is divided into high stage portion 11-2a that is positioned at inner ring and the low stage portion 11-2b that is positioned at the outer ring, and the height a at ladder place is 0.3mm.The upper surface 11-2 of pedestal principal part 11 also is provided with 3 circles from inside to outside and is the nail groove that concentric circular distributes, and they are followed successively by the 1st circle nail groove 11-2-1, the 2nd circle nail groove 11-2-2 and the 3rd circle nail groove 11-2-3.The quantity of the nail groove of each circle is 11; 11 nail groove 11-2-1 of first lap are spaced apart around central stepped bore 11-1 equal angles; Each nail groove 11-2-2 of second circle is distributed in the outsides between two adjacent nail groove 11-2-1 of first lap, each nail groove 11-2-3 of the 3rd circle outsides between two adjacent nail groove 11-2-2 of second circle that distribute.The nail groove 11-2-2 of the nail groove 11-2-1 of above-mentioned first lap and second circle is positioned on the high stage portion 11-2a of upper surface 11-2, and the nail groove 11-2-3 of the 3rd circle is positioned on the low stage portion 11-2b of upper surface 11-2.

See Fig. 1 to Fig. 3, the nail cartridge module 2 of pushing device is made up of anastomosis staple 21, nail bin lid 22, endless knife 23, ejector pin member 24 and nail bin cover 25.Nail bin lid 22, ejector pin member 24 and nail bin cover 25 are the integrated through injection molding part.

Nail bin cover 25 is linked to each other successively with central body 25-3 and is constituted by shell 25-1, connection gusset 25-2; And it is inner that central body 25-3 is positioned at shell 25-1; Connect gusset 25-2 and have 4; Each connects gusset 25-2 and is provided with at interval around central body 25-3 equal angles, is connected between the middle and upper part of middle and upper part and central body 25-3 of shell 25-1.

See Fig. 3, the lower surface of nail bin lid 22 is annular basically, and the integral body of nail bin lid 22 is cylindric, and nail bin lid 22 constitutes by cylindrical shell 22-1 with around the edge 22-2 of the outside chime rings shape of lower end part of cylindrical shell 22-1.The cylindrical shell 22-1 of nail bin lid 22 goes up and is provided with 3 circles that connect up and down according to from inside to outside order and is the nail bin hole that concentric circular distributes; The quantity in the nail bin hole of each circle is 11, and the position in the nail bin hole of each set circle is corresponding with the position that pedestal principal part 11a goes up the set respectively nail groove of circle on the nail bin lid 22.Nail bin lid 22 stretch into from bottom to top by its cylindrical shell 22-1 among the shell 25-1 of nail bin cover 25 and with its tight fit, nail bin lid 22 is overlapped 25 shell 25-1 by the upper surfaces of its edge 22-2 and nail bin lower surface contacts.

Ejector pin member 24 is made up of ejector pin board 24-1, connecting portion 24-2 and the 24-3 of pushing slice of nail portion.Said ejector pin board 24-1 has 4 push pedals, and 4 push pedals are spaced apart with angle same along same circumference, and each push pedal is connected on the connecting portion 24-2 that is positioned at the below by separately lower end part respectively.The said pushing slice of nail 24-3 of portion is connected connecting portion 24-2 by the pushing slice of nail of each vertical setting and goes up and constitute from the below; And all pushing slice of nail are scattered in 3 circle pushing slice of nail successively along 3 concentric circulars; The quantity of the pushing slice of nail of each circle is 11 and be provided with according to the mode of angle uniformly-spaced; And the position of the pushing slice of nail of each set circle is corresponding with the position that nail bin covers each set on 22 nail bin hole of enclosing on the ejector pin member 24; And then with pedestal principal part 11a to go up the position of nail groove of each set circle corresponding; Also be that the 1st inboard circle pushing slice of nail 24-3-1 of being positioned at of ejector pin member 24 is corresponding with the 1st circle nail groove 11-2-1 of pedestal principal part 11a; Ejector pin member 24 to be positioned at intermediary the 2nd circle pushing slice of nail 24-3-2 corresponding with the 2nd circle nail groove 11-2-2 of pedestal principal part 11a, the 3rd circle pushing slice of nail 24-3-3 that is positioned at the outside and the 3rd of the pedestal principal part 11a of ejector pin member 24 encloses that to follow closely groove 11-2-3 corresponding.Ejector pin member 24 is arranged in the nail bin cover 25; And between the shell 25-1 and central body 25-3 of nail bin cover 25; And can overlap 25 with respect to nail bin and slide up and down, the lower end of each pushing slice of nail of ejector pin member 24 stretches in the corresponding nail bin hole of nail bin lid 22 as the ejector pin position from top to bottom.

Endless knife 23 is fixed on the connecting portion 24-2 of ejector pin member 24, and the edge of a knife of endless knife 23 down.33 anastomosis staples 21 are arranged in a corresponding nail bin hole of nail bin lid 22, and are positioned at the below of a corresponding pushing slice of nail of ejector pin member 24, and the height that all anastomosis staples 21 distribute is identical.

See Fig. 1 and Fig. 2, anastomat body 3 comprises bend pipe 31, fixed handle 32 and 2 clamping rings.2 clamping rings are divided into clamping ring 33 and last clamping ring 34 down.Nail bin cover 25 upper ends by its shell 25-1 are enclosed within on the lower end of bend pipe 31 and both interference fits, on the outside of and bend pipe 31 outside in the upper end of the shell 25-1 of nail bin cover 25 by clamping ring 33 gripping sleeves down, are fixedly connected with bend pipe 31 thereby make nail bin overlap 25.Fixed handle 32 is made up of procapsid 32-1 and back casing 32-2, and procapsid 32-1 and back casing 32-2 are the integrated through injection molding part.Procapsid 32-1 is fastened on backward and then constitutes fixed handle 32 on the back casing 32-2; The lower end of fixed handle 32 is enclosed within on the upper end of bend pipe 31, and on the outside of and bend pipe 31 outside in the lower end of fixed handle 32 by last clamping ring 34 gripping sleeves, and fixed handle 32 is fixedly connected with bend pipe 31.

Still see Fig. 1 and Fig. 2, apical axis assembly 5 all stretches in the anastomat body 3 with push-rod assembly 6.Apical axis assembly 5 comprises apical axis 51, strip flexure strip 52 and tailing axle 53, and apical axis 51, strip flexure strip 52 and tailing axle 53 are fixedly connected sequentially according to from bottom to up order and are in the same place.Described apical axis 51 is the steel integral piece, is linked to each other successively from bottom to up with last shaft part 51-4 and is constituted by top 51-1, following shaft part 51-2, middle shaft part 51-3.Said position, upper end of going up shaft part 51-4 is provided with opening inserting groove and corresponding riveted holes up; The diameter of middle shaft part 51-3 is less than last shaft part 51-4; The diameter of following shaft part 51-2 is less than middle shaft part 51-3; It is conical that top 51-1 is basically, its cone tip part position down, top 51-1 is towards the equal diameters of the diameter and the middle shaft part 51-3 of the bottom surface of top.Described strip flexure strip 52 is folded mutually by two whole steel bands and is constituted; Tailing axle 53 is the steel integral piece; Being connected upper rod section 53-2 from the below by lower rod section 53-1 goes up and constitutes; Said upper rod section 53-2 is provided with external screw thread, and lower rod section 53-1 is a polished rod, and the lower end part of lower rod section 53-1 is provided with inserting groove and the corresponding riveted holes that Open Side Down.The lower end of strip flexure strip 52 is sandwiched in the inserting groove at position, upper end of last shaft part 51-4 of apical axis 51, and passes corresponding riveted holes and with strip flexure strip 52 and apical axis 51 riveted and fixed together by rivet; The upper end of strip flexure strip 52 is sandwiched in the inserting groove of lower end part of lower rod section 53-1 of tailing axle 53, and passes corresponding riveted holes and with strip flexure strip 52 and tailing axle 53 riveted and fixed together by rivet.

Still see Fig. 1 and Fig. 2, push-rod assembly 6 is made up of push rod 61 and press strip 62.Push rod 61 is the integrated through injection molding part, is made up of the body 61-1, body of rod 61-2 and the cell body 61-3 that link to each other successively from bottom to up.The body of rod 61-2 of push rod 61 shape that totally is convexly curved; The cell body 61-3 of push rod 61 is half-surrounded from right to left; And cell body 61-3 becomes 90 degree to link to each other and constitute by front side board, right plate and back side panel successively; And between described front side board and right plate, be provided with the preceding slot that opening makes progress, and between described right plate and back side panel, be provided with the back slot that opening makes progress.The last shaft part 51-4 that the body 61-1 of push rod 61 is enclosed within apical axis 51 goes up and push rod 61 is slidingly connected by the last shaft part 51-4 of its body 61-1 and apical axis 51 vertically; Semi-surrounding is on the lower rod section 53-1 of tailing axle 53 from right to left for the cell body 61-3 of push rod 61, and both can relative motioies.Press strip 62 is arranged on the left side of the body of rod 61-2 of push rod 61.

See Fig. 3, the seat medicated cap 12 of nail supporting base assembly 1 is the plastics integral piece with knife washer 13, and locator card reed pipe 14 is the steel integral piece.Seat medicated cap 12 is provided with 2 joint pin 12-1; Seat medicated cap 12 is positioned at the below of nail supporting base 11; Seat medicated cap 12 passes corresponding 2 connecting hole 11-7 of nail supporting base 11 by its 2 joint pin 12-1 from the below, and with joint pin 12-1 in the upper end welding mode, make a seat medicated cap 12 be fixedly mounted on the nail supporting base 11.Knife washer 13 is fixed on the nail supporting base 11 with locator card reed pipe 14 equal coaxial lines.Concrete structure is following:

Knife washer 13 is linked to each other successively with the 13-3 of outer ring portion along 13-1, the 13-2 of inner ring portion by the pad knife-edge and constitutes; The 13-3 of outer ring portion is provided with and links together from top and the 13-2 of inner ring portion around the 13-2 of inner ring portion, fill up knife-edge along 13-1 be inner ring portion 13-2 lower end to projecting inward position.Knife washer 13 is arranged among the upper-side hole section 11-1-1 and interstitial hole section 11-1-2 of pedestal principal part 11a of nail supporting base 11; And knife washer 13 is contacted with the hole wall of the upper-side hole section 11-1-1 of the pedestal principal part 11a of nail supporting base 11 by the lateral surface of the 13-2 of its outer ring portion, is contacted with the upper surface of the connecting portion 11b of nail supporting base 11 by the lower surface of its pad knife-edge along 13-1.

The lower-side hole section 11-1-3 of the central stepped bore 11-1 of nail supporting base 11 is passed in the lower end of locator card reed pipe 14; And connecting portion 11b tight fit with nail supporting base 11; The top of locator card reed pipe 14 is arranged in the central body 25-3 of nail bin cover 25; And locator card reed pipe 14 can endwisely slip up and down with respect to the body 25-3 of these central authorities, and can be drawn out of the central body 25-3 of nail bin cover 25 under external force.The apical axis 51 of apical axis assembly 5 is by its top 51-1, down shaft part 51-2 and middle shaft part 51-3 stretch in the locator card reed pipe 14, its down shaft part 51-2 be positioned that the protrusion position 14-1 of inside of jump ring pipe 14 blocks and by the middle shaft part 51-3 of apical axis 51 with the end face down between the last shaft part 51-4 contacts with the upper surface of the port of locator card reed pipe 14 and make apical axis 51 be positioned.

Still see Fig. 1 and Fig. 2, the bend pipe 31 of anastomat body 3 is enclosed within outside apical axis assembly 5, push rod 61 and the press strip 62.Press strip 62 is used to prevent the rotation of strip flexure strip 52, and the steel band of strip flexure strip 52 is kept certain pressure.

The last shaft part 51-4 of the apical axis 51 of apical axis assembly 5 is arranged in the central body 25-3 of the nail bin cover 25 of nail cartridge module 2, and apical axis assembly 5 can move with respect to central body 25-3 by related nail supporting base assembly 1 vertically; The lower end of the body 61-3 of push rod 61 stretches in the open upper end that nail bin overlaps 25 shell 25-1, withstand on the position, upper end of each push pedal of ejector pin board 24-1 of ejector pin member 24 and be interlockingly connected between the position, upper end of each push pedal.Fixed handle 32 is enclosed in outside apical axis assembly 5 and the push-rod assembly 6.

Still see Fig. 1 and Fig. 2, Handleset 4 comprises flexible handle 41, handle pin 42, reduction torsion spring 43, torsion spring backing pin 44 and guard shield 45.Flexible handle 41, handle pin 42, reduction torsion spring 43 and torsion spring backing pin 44 are the steel integral piece.Flexible handle 41 comprises the front side board, connecting plate and the back side panel that link to each other successively for the whole steel integral piece that is bending shape, also comprises the torsion spring baffle plate that is connected from the place ahead on the back side panel.All have pin shaft hole on front side board and the back side panel, and the right-hand member position of the right-hand member position of front side board and back side panel all grows connecting plate to the right, thereby form the forked end portions 41-1 of flexible handle 41.Guard shield 45 is the integrated through injection molding part, tightly covers on outside the left-hand portion of flexible handle 41 with the form of semi-surrounding, and is positioned at the left of flexible handle 41.

Handle pin 42 passes the pin shaft hole of back side panel of pin shaft hole, reduction torsion spring 43, the flexible handle 41 of the front side board of flexible handle 41 successively, and forms the main body of Handleset 4.Being fastened on back casing 32-2 at the procapsid 32-1 with fixed handle 32 goes forward; Earlier above-mentioned main body of passing the Handleset 4 of handle pin 42 is stretched into by the rear end of its handle pin 42 in the opening handle pin-and-hole forward on the back casing 32-2 of fixed handle 32; Again with the front end of handle pin 42 by on the handle pin borehole jack backwards of the opening on the procapsid 32-1 of fixed handle 32, thereby can be so that flexible handle 41 be rotatably connected on the fixed handle 32 after fixed handle 32 installations.

After reduction torsion spring 43 is enclosed within on the handle pin 42, and one of which root spring foot is against on the torsion spring baffle plate of flexible handle 41, and another root spring foot is against on the torsion spring backing pin 44.

Torsion spring backing pin 44 whole cylindrical, the back pin section of torsion spring backing pin 44 are inserted in the opening semi-circular hole up of torsion spring key seat of back casing 32-2 of fixed handle 32, and torsion spring backing pin 44 is contacted with an above-mentioned spring foot of reduction torsion spring 43 by pin section before it.The forked end portions 41-1 of flexible handle 41 is by the preceding slot and back slot of both sides before and after being arranged in of the cell body 61-3 of the upper left push rod 61 that inserts push-rod assembly 6 to the bottom right.

Still see Fig. 1 and Fig. 2, Control Component 7 comprises adjusting nut 71.Adjusting nut 71 is the integrated through injection molding part.

See Fig. 1 to Fig. 3; The upper end of fixed handle 32 and adjusting nut 71 are rotationally connected; And fixed handle 32 is spacing each other in the axial direction with adjusting nut 71, and the bottom of adjusting nut 71 is arranged in fixed handle 32 and is connected with the upper rod section 53-1 threads turn of the tailing axle 53 of apical axis assembly 5 by its inner bolt hole.

Insurance institution 8 comprises safety block 81, safety block bearing pin 82 and torsion spring 83.Safety block 81 is provided with torsional spring slot; Torsion spring 83 is arranged in the torsional spring slot of safety block 81; Safety block bearing pin 82 passes safety block 81 and torsion spring 83, and the termination is stretched among the back casing 32-2 of fixed handle 32 thereafter, and front end stretches among the procapsid 32-1, thereby safety block 81 is rotatably connected on the fixed handle 32 through safety block bearing pin 82.Spring foot of torsion spring 83 and safety block 81 Elastic Contact, handle pin 42 Elastic Contact of another root spring foot and flexible handle 41.

When using digestive tract stapler, before the operation, anastomosis staple 21 is packed in the nail bin hole of nail bin lid 22.The step of operation is following:

Near the side otch of a fracture of the human body alimentary canal tubular tissue of 1. the seat medicated cap 12 of nail supporting base assembly 1 being sewed up from need stretches into the digestive tract tubular tissue.

2. rotating counterclockwise adjusting nut 71 makes apical axis assembly 5 vertically to the one side motion of apical axis 51 places; Leave nail cartridge module 2 and together move and drive nail supporting base assembly 1; Make nail supporting base assembly 1 stretch out and stretch into another fracture from this fracture, the tissue that will coincide is tightened on locator card reed pipe 14.

3. clockwise rotate adjusting nut 71, make coincideing, it is clamped to organize.

4. open insurance institution 8, though also safety block 81 by prop up flexible handle 41 with the perpendicular rotated position of fixed handle 32 to the position that parallels with fixed handle 32.

5. pull flexible handle 41; Make push rod 61 and ejector pin member 24 vertically to nail supporting base 11 place direction motions successively; The motion of ejector pin member 24 is then released the anastomosis staple 21 in endless knife 23 and the nail bin lid 22 to nail supporting base 11 place directions; Direct reach the nail groove on the nail supporting base 11 when anastomosis staple 21 is pushed out and penetrates clamped treating behind the identical tissue, make the anastomosis staple 21 of U-shaped bend to B shape, thereby reach the purpose that tissue is linked together., endless knife 23 directes reach the clamped redundance of treating identical tissue of knife washer 13 excisions after being released in nail bin cover 25.

6. after accomplishing the operation that coincide (referring to that anastomosis staple 21 is nailed together and excises central unnecessary tissue with two ports), will comprise that directly the nail supporting base 11 and the digestive tract stapler of nail cartridge module 2 take out from the side otch together with the unnecessary tissue that downcuts.And then carry out the operations such as stitching of side otch.

Because the height and position at the 3rd circle nail groove 11-2-3 place of the outmost turns of the nail supporting base of anastomat 11 is lower than the height and position at the nail groove 11-1 place of interior two circles; The mucosa near the digestive tract wall can not occurred by the consequence that excessive compression causes tissue necrosis to come off when tightening thereby therefore anastomat coincide; And anastomotic stoma combines good, and need not around anastomotic stoma, to sew up a week again.

(embodiment 2)

See Fig. 8 to Figure 11, the digestive tract stapler of present embodiment and embodiment 1 are basic identical, and its difference is: the height of the upper surface of the pedestal principal part 11a of nail supporting base 11 is consistent, and promptly the upper-lower position of 3 circle nail grooves distributions is identical; And the lower surface of nail bin lid 22 is high outside and low outside stepped, and the height a at ladder place is 0.3mm;

11 anastomosis staples 21 of the outmost turns in the nail bin lid 22 are distributed in the higher position, its outside, ladder place, and the high 0.3mm of height and position that distributed than 22 anastomosis staples 21 of inner ring of the height and position that distributed at nail bin lid 22 of 11 anastomosis staples 21 of outmost turns.Thereby the mucosa near the digestive tract wall when this anastomat coincide equally can be occurred by the consequence that excessive compression causes tissue necrosis to come off, and the anastomotic stoma combination is good, need not around anastomotic stoma, to sew up a week again.

Claims

1. nail supporting base; It is characterized in that: this nail supporting base (11) is a steel integral piece with central stepped bore (11-1), by the pedestal principal part (11a) that is positioned at the upside periphery be connected that pedestal principal part (11a) is gone up and the connecting portion (11b) that is positioned at the central lower of pedestal principal part (11a) is formed;

Pedestal principal part (11a) is provided with medium pore, and this medium pore is the part of the central stepped bore (11-1) of nail supporting base (11); Pedestal principal part (11a) has the interior all sides that constitute its medium pore; Pedestal principal part (11a) also have be positioned at this top, all sides and the upper surface (11-2) of intersecting with this all side, be positioned at the outer side-lower in upper surface (11-2) and with this upper surface (11-2) crossing circumferential lateral surface (11-3); Said circumferential lateral surface (11-3) is made up of arcwall face that sets gradually from top to bottom (11-3-1) and up big and down small frustum cone side (11-3-2), and said arcwall face (11-3-1) seamlessly transits with frustum cone side (11-3-2);

Connecting portion (11b) is the tabular position that is provided with medium pore, and said medium pore also is the part of the central stepped bore (11-1) of nail supporting base (11); The upper surface of connecting portion (11b) at grade; Connecting portion (11b) comprises the position, radially outer ring (11-4) that is connected with pedestal principal part (11a), around radially inner ring position (11-6) that medium pore is provided be positioned at radially position, outer ring (11-4) and the radially intermediate location (11-5) between inner ring position (11-6), and radially the lower surface (11-6-1) of inner ring position (11-6) is lower than the radially lower surface (11-4-1) of position, outer ring (11-4); The intermediate location (11-5) of connecting portion (11b) is the position that thickness of slab edge direction is from outside to inside changed from small to big, and the shape of its circumferential lateral surface is made up of with the up big and down small frustum cone side (11-5-2) that links to each other with cylindrical side (11-5-1) from the below the cylindrical side (11-5-1) that is positioned at the top;

The upper surface of pedestal principal part 11 (11-2) is provided with 3 circles from inside to outside and is the nail groove that concentric circular distributes, and they are followed successively by the 1st circle nail groove (11-2-1), the 2nd circle nail groove (11-2-2) and the 3rd circle nail groove (11-2-3); The nail groove (11-2-1) of first lap is spaced apart around central stepped bore (11-1) equal angles; Each nail groove (11-2-2) of second circle is distributed in the outsides between adjacent two nail grooves (11-2-1) of first lap, each nail groove (11-2-3) of the 3rd circle outsides between adjacent two nail grooves (11-2-2) of second circle that distribute; The quantity of the nail groove of described each circle is 7 to 20.

2. nail supporting base according to claim 1 is characterized in that: circumferential lateral surface (11-3) the maximum gauge b1 of pedestal principal part (11a) is 22 to 27mm, and minimum diameter b2 is 12 to 18mm; The diameter b 3 of intermediate location (11-5) the periphery maximum of connecting portion (11b) is 13 to 17mm, and the diameter b 4 at minimum place is 8 to 12mm; The central stepped bore (11-1) of nail supporting base (1) comprises upper-side hole section (11-1-1), interstitial hole section (11-1-2) and lower-side hole section (11-1-3); The diameter of interstitial hole section (11-1-2) than the diameter big 0.4 of upper-side hole section (11-1-1) to 0.8mm; The diameter of lower-side hole section (11-1-3) than the diameter little 0.8 of interstitial hole section (11-1-2) to 12mm.

3. require 1 or 2 described nail supporting bases according to profit, it is characterized in that: the upper surface (11-2) of pedestal principal part (11a) totally is annular; The height of the upper surface of pedestal principal part (11a) is consistent, perhaps is outer low and inner high stepped;

When the upper surface of pedestal principal part (11a) is outer low and inner high when stepped, thereby this upper surface (11-2) is divided into high stage portion (11-2a) that is positioned at inner ring and the low stage portion (11-2b) that is positioned at the outer ring, and the height a at ladder place is 0.2mm to 0.5mm; The nail groove (11-2-2) of the nail groove (11-2-1) of described first lap and second circle is positioned on the high stage portion (11-2a) of upper surface (11-2), and the nail groove (11-2-3) of the 3rd circle is positioned on the low stage portion (11-2b) of upper surface (11-2).

4. a digestive tract stapler comprises nail supporting base assembly (1) and pushing device; Nail supporting base assembly (1) comprises nail supporting base (11), seat medicated cap (12) and locator card reed pipe (14); Seat medicated cap (12) is positioned at nail supporting base (11) below and is fixed on the nail supporting base (11); Locator card reed pipe (14) coaxial line is fixed on the nail supporting base (11);

Pushing device comprises nail cartridge module (2), anastomat body (3), Handleset (4), apical axis assembly (5), push-rod assembly (6) and Control Component (7); Nail cartridge module (2) comprises nail bin cover (25) and is arranged on the ejector pin member (24) in the nail bin cover (25); Nail cartridge module (2) is fixedly connected with the lower end of the bend pipe (31) of anastomat body (3) by the upper end of the shell (25-1) of its nail bin cover (25); The upper end of bend pipe (31) is fixedly connected with the lower end of the fixed handle (32) of anastomat body (3); The adjusting nut (71) of Control Component (7) is enclosed within on the upper end of fixed handle (32), be rotationally connected with fixed handle (32), and both is spacing each other in the axial direction; Apical axis assembly (5) comprises according to from bottom to up order be fixedly connected sequentially apical axis (51), strip flexure strip (52) and tailing axle (53) together; Push-rod assembly (6) is enclosed within on the apical axis (51) by the body (61-1) of its push rod (61); By its cell body (61-3) semi-surrounding on tailing axle (53); And apical axis assembly (5) and push-rod assembly (6) stretch in the bend pipe (31) and fixed handle (32) of anastomat body (3), thereby make push rod (61) and apical axis assembly (5) be slidingly connected vertically; Apical axis (51) passes the central body (25-3) of nail bin cover (25), and apical axis (51) is stretched in the locator card reed pipe (14) of nail holder assembly (1) and is positioned jump ring pipe (14) removable blocking and locatees by its underpart; Locator card reed pipe (14) matches with the central body (25-3) of nail bin cover (25); Push rod (61) is withstood on by the lower end of its body (61-3) on the position, upper end of each push pedal of ejector pin board (24-1) of ejector pin member (24) of nail cartridge module (2); The flexible handle (41) of Handleset (4) is rotationally connected with fixed handle (32), and inserts the preceding slot that is arranged in the both sides, front and back and back slot of the cell body (61-3) of push rod (61) by its forked end portions (41-1); Tailing axle (53) is threaded with adjusting nut (71) by the external screw thread of its upper rod section (53-2); It is characterized in that:

Nail supporting base (11) is a steel integral piece with central stepped bore (11-1), by the pedestal principal part (11a) that is positioned at the upside periphery be connected that pedestal principal part (11a) is gone up and the connecting portion (11b) that is positioned at the central lower of pedestal principal part (11a) is formed;

The upper surface (11-2) of pedestal principal part (11) is provided with 3 circles from inside to outside and is the nail groove that concentric circular distributes, and they are followed successively by the 1st circle nail groove (11-2-1), the 2nd circle nail groove (11-2-2) and the 3rd circle nail groove (11-2-3); The nail groove (11-2-1) of first lap is spaced apart around central stepped bore (11-1) equal angles; Each nail groove (11-2-2) of second circle is distributed in the outsides between adjacent two nail grooves (11-2-1) of first lap, each nail groove (11-2-3) of the 3rd circle outsides between adjacent two nail grooves (11-2-2) of second circle that distribute; The quantity of the nail groove of described each circle is 7 to 20;

Nail cartridge module (2) also comprises anastomosis staple (21), nail bin lid (22) and endless knife (23);

Nail bin cover (25) by shell (25-1), connect gusset (25-2) and central body (25-3) formation that links to each other successively; And central body (25-3) is positioned at shell (25-1) inside; Connect gusset (25-2) and have 2 to 6; Each connects gusset (25-2) and is provided with at interval around central body (25-3) equal angles, is connected between the middle and upper part of middle and upper part and central body (25-3) of shell (25-1);

The lower surface of nail bin lid (22) totally is annular, and the integral body of nail bin lid (22) is cylindric, and nail bin lid (22) constitutes by cylindrical shell (22-1) with around the edge (22-2) of the outside chime rings shape of lower end part of cylindrical shell (22-1); The cylindrical shell (22-1) of nail bin lid (22) is gone up and is provided with 3 circles that connect up and down according to from inside to outside order and is the nail bin hole that concentric circular distributes; And the position in the nail bin hole of each circle that nail bin lid (22) is upward set is corresponding with the position that pedestal principal part (11a) is gone up each set nail groove that encloses; Nail bin lid (22) stretch into from bottom to top by its cylindrical shell (22-1) in the shell (25-1) of nail bin cover (25) and with its tight fit, nail bin lid (22) is contacted with the lower surface of the shell (25-1) of nail bin cover (25) by the upper surface of its edge (22-2);

Ejector pin member (24) is made up of ejector pin board (24-1), connecting portion (24-2) and pushing slice of nail portion (24-3); Said ejector pin board (24-1) has 2 to 6 push pedals, and the quantity of push pedal is identical with the quantity of the connection gusset (25-2) of nail bin cover (25); Each piece push pedal is spaced apart with angle same along same circumference, and each push pedal is connected on the connecting portion (24-2) that is positioned at the below by separately lower end part respectively; Said pushing slice of nail portion (24-3) is connected connecting portion (24-2) by the pushing slice of nail of each vertical setting and goes up and constitute from the below; And all pushing slice of nail are scattered in 3 circle pushing slice of nail successively along 3 concentric circulars; The quantity of the pushing slice of nail of each circle is all identical with the quantity of the nail groove of each circle of nail supporting base (11) and be provided with according to the mode of angle uniformly-spaced; And it is corresponding that position and nail bin lid (22) that ejector pin member (24) is gone up the pushing slice of nail of each set circle are gone up the position in nail bin hole of each set circle, and then to go up the position of each set nail groove that encloses corresponding with pedestal principal part (11a); Ejector pin member (24) is arranged in the nail bin cover (25); And be positioned between the shell (25-1) and central body (25-3) of nail bin cover (25); And can slide up and down with respect to nail bin cover (25), the lower end of each pushing slice of nail of ejector pin member (24) stretches in the corresponding nail bin hole of nail bin lid (22) from top to bottom as the ejector pin position;

Endless knife (23) is fixed on the connecting portion (24-2) of ejector pin member (24), and the edge of a knife of endless knife (23) down;

Each anastomosis staple (21) is arranged in a corresponding nail bin hole of nail bin lid (22), and is positioned at the below of a corresponding pushing slice of nail of ejector pin member (24).

5. require 4 described digestive tract staplers according to profit; It is characterized in that: the upper surface (11-2) of the pedestal principal part (11a) of the nail supporting base (11) of nail supporting base assembly (1) totally is annular; And be outer low and inner high stepped; This upper surface thereby (11-2) is divided into high stage portion (11-2a) that is positioned at inner ring and the low stage portion (11-2b) that is positioned at the outer ring, and the height a at ladder place is 0.2mm to 0.5mm; The nail groove (11-2-2) of the nail groove (11-2-1) of described first lap and second circle is positioned on the high stage portion (11-2a) of upper surface (11-2), and the nail groove (11-2-3) of the 3rd circle is positioned on the low stage portion (11-2b) of upper surface (11-2); The height of the lower surface of the nail bin lid (22) of nail cartridge module (2) is consistent, and the height and position that three circle anastomosis staples (21) distribute is consistent.

6. require 4 described digestive tract staplers according to profit, it is characterized in that: the upper surface of the pedestal principal part (11a) of the nail supporting base (11) of nail supporting base assembly (1) totally is annular, and the height of upper surface is consistent; It is high outside and low outside stepped that the lower surface of the nail bin lid (22) of nail cartridge module (2) is; The height a at ladder place is 0.2mm to 0.5mm; And the anastomosis staple (21) of the outmost turns in the nail bin lid (22) is distributed in the higher position, its outside, ladder place, and the high 0.2mm to 0.5mm of height and position that distributed than the anastomosis staple (21) of inner ring of the height and position that distributed at nail bin lid (22) of the anastomosis staple of outmost turns (21).

7. require one of 4 to 6 described digestive tract staplers according to profit, it is characterized in that: circumferential lateral surface (11-3) the maximum gauge b1 of the pedestal principal part (11a) of the nail supporting base (11) of nail supporting base assembly (1) is 22 to 27mm, and minimum diameter b2 is 12 to 18mm; The diameter b 3 of intermediate location (11-5) the periphery maximum of connecting portion (11b) is 13 to 17mm, and the diameter b 4 at minimum place is 8 to 12mm;

The central stepped bore (11-1) of nail supporting base (11) comprises upper-side hole section (11-1-1), interstitial hole section (11-1-2) and lower-side hole section (11-1-3); The diameter of interstitial hole section (11-1-2) than the diameter big 0.4 of upper-side hole section (11-1-1) to 0.8mm; The diameter of interstitial hole section (11-1-2) than the diameter big 0.8 of lower-side hole section (11-1-3) to 1.2mm;

Nail supporting base assembly (1) also comprises knife washer (13); Knife washer (13) is the plastics integral piece; Knife washer (13) by the pad knife-edge along (13-1), inner ring portion (13-2) and outer ring portion (13-3) formation that links to each other successively; Outer ring portion (13-3) is provided with and links together from top and inner ring portion (13-2) around inner ring portion (13-2), pad knife-edge edge (13-1) be inner ring portion (13-2) lower end to projecting inward position; Knife washer (13) is contacted with the upper surface of the connecting portion (11b) of nail supporting base (11) by the lower surface of its pad knife-edge along (13-1); Knife washer (13) is also contacted with the hole wall of the upper-side hole section (11-1-1) of the pedestal principal part (11a) of nail supporting base (11) by the lateral surface of its outer ring portion (13-2), thereby elasticity is arranged on the nail supporting base (11).

8. require 7 described digestive tract staplers according to profit, it is characterized in that:

Anastomat body (3) also comprises 2 clamping rings; 2 clamping rings are divided into clamping ring (33) and last clamping ring (34) down; Nail bin cover (25) is enclosed within on the lower end of bend pipe (31) and both interference fits by the upper end of its shell (25-1); On the outside of and bend pipe (31) outside in the upper end of the shell (25-1) of nail bin cover (25), thereby nail bin cover (25) is fixedly connected with bend pipe (31) by following clamping ring (33) gripping sleeve; The lower end of fixed handle (32) is enclosed within on the upper end of bend pipe (31), and on the outside of and bend pipe (31) outside in the lower end of fixed handle (32) by last clamping ring (34) gripping sleeve, and fixed handle (32) is fixedly connected with bend pipe (31);

Push-rod assembly (6) also comprises press strip (62); Push rod (61) and press strip (62) are the plastics integral piece; Push rod (61) is made up of the body (61-1), the body of rod (61-2) and the cell body (61-3) that link to each other successively from bottom to up; The body of rod (61-2) of push rod (61) shape that totally is convexly curved; The cell body (61-3) of push rod (61) is half-surrounded from right to left; And cell body (61-3) becomes 90 degree to link to each other and constitute by front side board, right plate and back side panel successively; Preceding slot is for being opened in gap between described front side board and the right plate, and back slot is the gap that is opened between described right plate and the back side panel; Semi-surrounding is on the lower pole section of tailing axle (53) from right to left for the cell body (61-3) of push rod (61), and both can relative motioies;

Press strip (62) is arranged on the left side of the strip flexure strip (52) of apical axis assembly (5).

9. digestive tract stapler according to claim 7; It is characterized in that: the apical axis (51) of described apical axis assembly (5) is the steel integral piece, by top (51-1), following shaft part (51-2), middle shaft part (51-3) and last shaft part (51-4) formation that links to each other successively from bottom to up; Said position, upper end of going up shaft part (51-4) is provided with opening inserting groove and corresponding riveted holes up; The diameter of middle shaft part (51-3) is less than last shaft part (51-4); The diameter of following shaft part (51-2) is less than middle shaft part (51-3); Top (51-1) is conical basically, its cone tip part position down, top (51-1) is towards the equal diameters of the diameter and the middle shaft part (51-3) of the bottom surface of top; Described strip flexure strip (52) is folded mutually by two whole steel bands and is constituted; Tailing axle (53) is the steel integral piece; Being connected upper rod section (53-2) from the below by lower rod section (53-1) goes up and constitutes; Said upper rod section (53-2) is provided with external screw thread; Lower rod section (53-1) is a polished rod, and the lower end part of lower rod section (53-1) is provided with inserting groove and the corresponding riveted holes that Open Side Down; The lower end of strip flexure strip (52) is sandwiched in the inserting groove at position, upper end of last shaft part (51-4) of apical axis (51), and passes corresponding riveted holes and with strip flexure strip (52) and apical axis (51) riveted and fixed together by rivet; The upper end of strip flexure strip (52) is sandwiched in the inserting groove of lower end part of lower rod section (53-1) of tailing axle (53), and passes corresponding riveted holes and with strip flexure strip (52) and tailing axle (53) riveted and fixed together by rivet;

The fixed handle (32) of anastomat body (3) is made up of procapsid (32-1) and back casing (32-2), and procapsid (32-1) is the integrated through injection molding part with back casing (32-2); Procapsid (32-1) is fastened on backward and then constitutes fixed handle (32) on the back casing (32-2);

Handleset (4) also comprises handle pin (42), reduction torsion spring (43), torsion spring backing pin (44) and guard shield (45); Flexible handle (41) comprises the front side board, connecting plate and the back side panel that link to each other successively for the whole steel integral piece that is bending shape, also comprises the torsion spring baffle plate that is connected from the place ahead on the back side panel; All have pin shaft hole on front side board and the back side panel, and the right-hand member position of the right-hand member position of front side board and back side panel all grows connecting plate to the right, thereby form the forked end portions (41-1) of flexible handle (41); Guard shield (45) is the integrated through injection molding part, tightly covers on outside the left-hand portion of flexible handle (41) with the form of semi-surrounding, and is positioned at the left of flexible handle (41);

Handle pin (42) passes the pin shaft hole of back side panel of pin shaft hole, reduction torsion spring (43), the flexible handle (41) of the front side board of flexible handle (41) successively, and forms the main body of Handleset (4); Being fastened on back casing (32-2) at the procapsid (32-1) with fixed handle (32) goes forward; Earlier above-mentioned main body of passing the Handleset (4) of handle pin (42) is stretched into by the rear end of its handle pin (42) in the opening handle pin-and-hole forward on the back casing (32-2) of fixed handle (32), again with the front end of handle pin (42) by on the opening handle pin borehole jack backwards on the procapsid (32-1) of fixed handle (32);

Reduction torsion spring (43) is enclosed within after handle pin (42) goes up, and one of which root spring foot is against on the torsion spring baffle plate of flexible handle (41), and another root spring foot is against on the torsion spring backing pin (44);

Torsion spring backing pin (44) whole cylindrical; In the opening semi-circular hole up of the torsion spring key seat of the back casing (32-2) of the back pin section insertion fixed handle (32) of torsion spring backing pin (44), torsion spring backing pin (44) is contacted with an above-mentioned spring foot of reduction torsion spring (43) by pin section before it.

10. digestive tract stapler according to claim 9 is characterized in that: also comprise insurance institution (8); Insurance institution (8) comprises safety block (81), safety block bearing pin (82) and torsion spring (83); Safety block (81) is provided with torsional spring slot; Torsion spring (83) is arranged in the torsional spring slot of safety block (81); Safety block bearing pin (82) passes safety block (81) and torsion spring (83); Thereafter the termination is stretched in the back casing (32-2) of fixed handle (32); Front end stretches in the procapsid (32-1), thereby safety block (81) is rotatably connected on the fixed handle (32) through safety block bearing pin (82); Spring foot of torsion spring (83) and safety block (81) Elastic Contact, handle pin (42) Elastic Contact of another root spring foot and flexible handle (41).