CN100393285C - Human digestive tract tubular tissue degradable stapler and stapler - Google Patents

Abstract

A human alimentary canal tubular tissue degradable anastomat and anastomat thereof, which adopts degradable material to form an anastomat with a novel structure which can be used on the anastomat, wherein the anastomat is provided with a degradable anastomosis seat piece and a degradable anastomosis fastener; the anastomosis seat part is provided with an anastomosis seat which is positioned on the periphery and has a basic shape of a circular ring and a connecting plate positioned in the center, 8 to 32 axial buckling through holes are uniformly distributed on the anastomosis seat along the circumference, and a central hole is arranged on the connecting plate; the inosculating fastener is a plurality of mutually independent buckling blocks with axial convex columns which can be matched with the corresponding buckling through holes of the inosculating seat piece when in use, and the quantity of the buckling blocks is the same as that of the buckling through holes of the inosculating seat. In use, the anastomotic piece is anastomosed with the corresponding part of the tubular tissue in the alimentary canal of the human body after the operation through the anastomat, thereby achieving the purposes of simple operation, smaller operation wound, shorter operation time and better anastomosis effect.

Description

Human digestive tract tubular tissue degradable stapler and stapler

technical field

The invention relates to a surgical instrument corresponding to an anastomosis piece used for anastomosis of tubular tissues in the human digestive tract.

Background technique

After the hospital performs surgical resection of a part of human tubular tissue such as the intestinal tract and esophagus, when the remaining tubular tissue is to be connected, the usual method is to use catgut to suture manually to achieve anastomosis; The other is to perform anastomosis with a special anastomotic needle through a stapler, such as the disclosed staplers in Chinese patent application 98227835.7. The operation of suture anastomosis is troublesome, the operation time is long, and the patient has more chances of bleeding and injury; the anastomotic needles used in needle anastomosis are metal needles such as titanium nails, tantalum nails, and stainless steel needles. This anastomosis method has the advantages of simple operation and smooth incision. , short operation time, etc.; but there is still anastomosis prone to oozing and leakage, especially because the staples exist in the body for a long time and will not be degraded or absorbed by the body, so that reflux or granuloma is prone to occur after surgery and other sequelae. As its improvement, Chinese patent application 98126516.2 proposes "an in vivo degradable surgical anastomotic sleeve for surgical anastomosis", which uses the Chinese patent application titled "Biodegradable polymer composition and its preparation method and use" 97116925.X proposed biodegradable polymer composition. The anastomotic sleeve is composed of a convex sleeve and a concave sleeve. The concave sleeve has a tubular concave sleeve body and 4 locking grooves on the wall of the concave sleeve body. The convex sleeve has a tubular convex sleeve body and 4 locking grooves connected to the convex sleeve body. A connecting key, the part between the convex sleeve body and the connecting key forms a concave keyway. When in use, put the two parts into the two ends of the intestines that need to be anastomosed, and the connecting key of the convex sleeve penetrates into the concave sleeve body correspondingly. One of the locking grooves protrudes out, so that the concave keyway of the convex sleeve clamps the outer tube wall of the concave sleeve body; this anastomosis method can use the inherent elasticity of the high molecular polymer to restore the original shape naturally, and realize the two ends of the intestine The anastomosis; as the material of the anastomotic sleeve degrades, the anastomotic sleeve naturally breaks up and is excreted from the body. However, this anastomotic sleeve needs to be anastomosed directly by hand during use, so the smoothness of the fracture cannot be guaranteed during anastomosis, and granulomas and the like are prone to occur.

Contents of the invention

The purpose of the present invention is to provide a degradable anastomotic piece for human digestive tract tubular tissue and a special instrument anastomotic device. When in use, the performed anastomosis operation is simple, the operation time is short, and the fracture of the anastomosis is smooth.

The general technical idea of the present invention is: adopt degradable material to form the anastomotic piece of the novel structure that can be used on the stapler, in use, after the anastomotic piece is operated by the stapler, the corresponding tubular tissue in the human digestive tract Partial anastomosis is performed, so as to achieve the purpose of simple operation, smaller surgical wound, shorter operation time and better anastomotic effect.

The technical scheme of providing a degradable anastomotic piece for tubular tissue of the human digestive tract in realizing the purpose of the present invention is as follows: the anastomotic piece has a degradable anastomotic seat and a degradable anastomotic fastener; the anastomotic seat has a basic An anastomotic seat in the shape of a ring and a connecting plate located in the center, the anastomotic seat has 8 to 32 axial buckle through holes evenly distributed along the circumference, and a central hole is provided on the connecting plate; the anastomotic fasteners are mutually independent and multiple A fastening block with an axial protrusion that can be matched with the corresponding fastening hole of the anastomotic seat during use, and the number of the fastening block is the same as the number of the fastening through holes of the anastomotic seat.

The fastening through holes on the anastomotic seat of the anastomotic seat part can also be arranged along two concentric circles, wherein 8 to 16 fastening through holes are evenly distributed along a circle on the inner side of the anastomotic seat, the same number The rest of the buckling through holes are evenly distributed along a circumference of the anastomotic seat on the outside in a manner of interlacing with the inner buckling through holes; There is a through groove through the anastomotic seat, so that the parts of the anastomotic seat near each fastening through hole form a corresponding fastening seat, and each fastening seat is connected to the central connecting plate.

Each fastening seat of the above-mentioned anastomotic seat is provided with a radial through groove communicating with the fastening through hole on the fastening seat.

Each fastening block of the above-mentioned anastomotic fastener is one piece, and the protruding post of the fastening block has a cylindrical shape; the anastomotic seat part is one piece; It is composed of a buckle joint on the upper part of the cylinder, and the cylinder is matched with the buckle through hole of the anastomotic seat when in use.

The diameter of the junction between the buckle joint and the cylinder can be the same as the diameter of the cylinder, or the diameter of the junction with the cylinder can be larger than the diameter of the cylinder.

The height of the post of each fastening block of the above-mentioned anastomotic fastener is 3 to 8 mm, wherein the height of the post of the post is 2 to 6 mm; the diameter of the post of the post is 0.5 to 1.5 mm; the anastomotic seat The plate thickness of the piece is 0.5 to 3.0 mm.

The lower part of the protruding posts of the above-mentioned fastening blocks is provided with a seat body, and the upper end surface of the seat body and the lower end surface of the anastomotic seat piece are rough surfaces, or are provided with grid patterns.

The buckle through hole of the above-mentioned anastomotic seat part is composed of an upper hole section and a lower hole section, the upper hole section is a counterbore with a diameter larger than the lower hole section, and the protruding posts of each fastening block of the anastomotic fastener are formed by its post during use. The body is matched with the lower hole section of the buckle through hole of the anastomotic seat part.

The fastening through holes on the anastomotic seat of the anastomotic seat part can be arranged along a circle; between the buckle through holes on the anastomotic seat, there are radially provided through grooves through the anastomotic seat, so that the anastomotic seat part A corresponding fastening seat is formed near each fastening through hole, and each fastening seat is connected to the central connecting plate; each fastening block of the anastomotic fastener is one piece, and the protruding post of the fastening block has The shape is a cylindrical cylinder; the anastomotic seat part is one piece; the convex post of each fastening block of the anastomotic fastener is matched with the fastening through hole of the anastomotic seat part by its cylinder when in use.

The technical scheme of providing a human digestive tract tubular tissue stapler in realizing the object of the present invention is as follows: the stapler has a stapler main body, and the stapler main body has a pusher part and a control part; the pusher part has a positioning sleeve, a staple bin and the moving knife assembly; the moving knife assembly has an annular cutter and a push nail seat; the annular cutter is in contact with the seat of the push nail seat; the staple bin is fixed on the positioning sleeve; the moving knife assembly is arranged in the positioning sleeve, and the moving knife The component is axially slidably connected with the positioning sleeve; the push rod of the nail pusher extends into the nail groove of the nail magazine and is located at the rear end of the nail groove; the control component has a housing component, a transmission component, a handle, a top shaft component and an adjustment component; the transmission The assembly is arranged in the casing assembly, and can slide in the casing assembly, and the sliding of the transmission assembly is controlled by the handle; the power output end of the transmission assembly is in contact with the moving knife assembly; the top shaft assembly is arranged in the casing assembly, and passes through the transmission assembly. assembly; the control knob of the adjustment assembly is threadedly connected with the control screw of the jacking shaft assembly; the stapler also has a fixed knife assembly, an anastomotic seat piece and an anastomotic fastener; the fixed knife assembly has a circular fixed knife and a connecting sleeve; a circular The fixed knife is fixedly connected with the connecting shaft sleeve; the anastomotic seat part is a degradable anastomotic seat part, and the anastomotic seat part has a circular anastomotic seat located on the periphery and a connecting plate located in the center, and the anastomotic seat is evenly distributed along the circumference. There are 8 to 32 axial buckle through holes, and a central hole is provided on the connecting plate; the anastomotic seat piece is sleeved on the connecting shaft sleeve through its central hole and is fixedly connected with the circular fixed knife; the anastomotic fasteners are mutually independent and multiple A degradable fastening block with an axial protruding post that can be matched with the corresponding fastening through hole of the anastomotic seat part during use, and the number of the fastening block is the same as the number of all the protruding posts The number of fastening through holes of the anastomotic seat is the same; each fastening block is arranged in the nail groove of the staple cartridge and is located at the front end of the nail groove; the connecting sleeve of the fixed knife assembly can be connected with the top shaft of the top shaft assembly of the control part fit together.

The fastening through holes on the anastomotic seat of the above-mentioned anastomotic seat can be arranged along two concentric circles, wherein 8 to 16 fastening through holes are evenly distributed along the inner circumference of the anastomotic seat, and the rest of the same number The buckle through holes of the anastomosis seat are evenly distributed along a circumference on the outside of the anastomotic seat in a manner of interlacing with the inner buckle through holes; Through the through groove of the anastomotic seat, the parts of the anastomotic seat near each fastening through hole form a corresponding fastening seat, and each fastening seat is connected to the central connecting plate.

Each fastening seat of the above-mentioned anastomotic seat is provided with a radial through groove communicating with the fastening through hole on the fastening seat.

Each fastening block of the above-mentioned anastomotic fastener is one piece, and the convex post of the fastening block has a cylindrical shape; the anastomotic seat part is one piece; The body is matched with the buckle through hole of the anastomotic seat part during use.

The diameter of the junction between the buckle joint and the cylinder can be the same as the diameter of the cylinder, or the diameter of the junction with the cylinder can be larger than the diameter of the cylinder.

The height of the post of each fastening block of the above-mentioned anastomotic fastener is 3 to 8 mm, wherein the height of the post of the post is 2 to 6 mm; the diameter of the post of the post is 0.5 to 1.5 mm; the anastomotic seat The plate thickness of the piece is 0.5 to 3.0 mm.

The upper end surface of the seat body of each fastening block of the above-mentioned anastomotic fastener and the lower end surface of the anastomotic seat piece are rough surfaces, or are provided with grid patterns.

The buckle through hole of the above-mentioned anastomotic seat part is composed of an upper hole section and a lower hole section, the upper hole section is a counterbore with a diameter larger than the lower hole section, and the protruding posts of each fastening block of the anastomotic fastener are formed by its post during use. The body is matched with the lower hole section of the buckle through hole of the anastomotic seat part.

The buckling through holes on the anastomotic seat of the above-mentioned anastomotic seat can be arranged along a circle; between each buckle through hole on the anastomotic seat, there is a through groove through the anastomotic seat in the radial direction, so that the anastomotic seat is located The parts near each buckle through hole form a corresponding buckle joint seat, and each buckle joint seat is connected to the central connecting plate; each buckle block of the above-mentioned anastomotic fastener is one piece, and the convex post of the buckle block has a shape of Cylindrical cylinder; the anastomotic seat part is one piece; the protruding post of each fastening block of the anastomotic fastener is matched with the fastening through hole of the anastomotic seat part by its cylinder when in use.

The positive effects of the present invention are as follows: (1) The biodegradable polymer composition proposed in Chinese patent applications 98227835.7 and 97116925.X can be used as the material for the biodegradable medical tissue anastomotic piece of the present invention and produced by corresponding methods, One of the production methods is to heat and react the relevant raw materials under stirring, and when the relevant product is still in a state of certain fluidity, it is added to the corresponding product by vacuum pouring method or injection method with certain pressure. In the mold of the shape, after cooling, the anastomotic fastener in the anastomotic piece of the present invention is made; the anastomotic seat piece can be processed by a mold with a metal insert in the molding, so as to make the anastomotic seat piece and the circular fixed knife The fixed knife assembly fixedly connected with the connecting shaft sleeve; controlling the addition ratio of related materials can control the degradation time to meet the time required for different tissue growth. Adjuvants such as X-ray imaging agents and anti-infective drugs can also be added before pouring or injection to meet different usage occasions. (2) The present invention adopts the suturing method in the form of plug-in and fastening to connect human tissues, wherein an anastomotic fastener with a cylindrical column and a convex post and an anastomotic seat with a circular buckle through hole are preferred. During the operation, the head of the main body of the stapler equipped with the anastomotic fastener and the fixed knife assembly is inserted into the tubular tissue of the digestive tract from the side incision near a fracture of the tubular tissue of the human digestive tract to be sutured and protruded from the fracture , and then let the fixed knife assembly extend into another fracture, and tie a purse on the connecting shaft sleeve for the two fractures; turn the control knob of the adjustment assembly of the control part counterclockwise to make most of the top shaft of the top shaft assembly Stretch out the positioning sleeve of the push nail part forward, fix the connecting shaft sleeve of the fixed knife assembly on the top shaft by hand, then turn the control knob of the adjustment assembly clockwise to move the top shaft assembly backward, and Drive the fixed knife assembly to move backward at the same time, so that the two fractures to be matched are close to each other until they touch each other. At this point, the handle can be pressed, and the handle drives the transmission assembly and the moving knife assembly of the push nail part in turn, and the push nail seat of the moving knife assembly pushes the convex posts of each anastomotic fastener to pass through the tubular tissue of the digestive tract to be anastomosed. The parts where the two fractures are in contact with each other are then inserted into the corresponding fastening holes of the anastomotic seat; when the protruding posts of each anastomotic fastener are inserted in place, the ring cutter in the moving knife assembly cuts off the central connection of the anastomotic seat Plate, so that each fastening seat of the anastomotic seat part is separated from each other, so as to realize reliable suturing connection to human tissue, and the cut human tissue is connected to the connecting sleeve due to the tied purse. So far, when the main body of the stapler is taken out from the side notch, because the connecting sleeve in the fixed knife assembly is fixed on the top shaft, and the connecting sleeve is fixedly connected with the circular fixed knife, the connection between the circular fixed knife and the anastomotic seat The connection plate is fixedly connected, so when the main body of the stapler is taken out, these parts of the fixed knife assembly are taken out together with the excised human tissue, and then the side incision of the tubular tissue is sutured and other corresponding sutures are performed to complete the operation . When the stapler of this structure is used for related operations, not only the incision is smooth, the operation is simple, the operation time is short, and the anastomosis is reliable, but it can effectively solve the problems of postoperative bleeding and leakage, reflux and granuloma and other sequelae. (3) When the protruding column of the anastomotic fastener of the present invention is matched with the fastening hole of the anastomotic seat, the reliable suture of human tissue can be realized through the close fit of the two; when the present invention adopts the structure with a buckle joint, After related tissue suturing, it has a self-locking function, which can more effectively prevent the disengagement of the anastomotic fastener and the anastomotic seat, so that the buckle-type suture fastness of the anastomotic is higher. (4) When the present invention adopts a structure with anti-slip patterns at the contact points of the anastomotic fastener and the anastomotic seat with human tissue and the anastomotic fastener adopts a cylinder of a corresponding height, the tissue at the suture can be under a certain pressure and In a good state of microcirculation to prevent tissue necrosis at the suture. (5) The anastomotic piece of the present invention is used for suturing operations, because the anastomotic piece can be degraded by human tissue after a period of time, loses strength, and can be excreted from the intestinal tract after the final fragmentation without sequelae.

Description of drawings

Fig. 1 is a schematic diagram of an anastomotic seat in embodiment 1 of the anastomotic element of the present invention.

Fig. 2 is a schematic diagram of a single fastening block of the anastomotic fastener in Embodiment 1 of the anastomotic element.

Fig. 3 is a schematic diagram of an anastomotic seat in Embodiment 2 of the anastomotic element of the present invention.

Fig. 4 is a schematic view in the reverse direction of the anastomotic seat part in Fig. 3 .

Fig. 5 is a schematic diagram of a single fastening block of the anastomotic fastener of the second embodiment of the anastomotic element.

Fig. 6 is a schematic diagram of an anastomotic seat in embodiment 3 of the anastomotic element of the present invention.

Fig. 7 is a cross-sectional view of the anastomotic seat of the third embodiment.

Fig. 8 is a schematic diagram of a single fastening block of the anastomotic fastener of the third embodiment of the anastomotic element.

Fig. 9 is a schematic diagram of an anastomotic seat in Embodiment 4 of the anastomotic element of the present invention.

Fig. 10 is a schematic perspective view of Embodiment 1 of the stapler of the present invention.

Fig. 11 is a partially exploded schematic view of the stapler shown in Fig. 10 .

Fig. 12 is a schematic exploded view of the main body of the stapler shown in Fig. 10 .

Fig. 13 is a schematic diagram of an anastomotic fastener being installed in a staple cartridge.

Fig. 14 is a perspective view of Embodiment 2 of the stapler of the present invention.

Fig. 15 is a partially exploded schematic diagram of the stapler shown in Fig. 14 .

Fig. 16 is an exploded schematic diagram of the main body of the stapler shown in Fig. 14 .

Detailed ways

(Anastomotic part embodiment 1)

Figures 1 to 2 show an anastomotic component embodiment 1 of the present invention, which includes an anastomotic seat component 1 and an anastomotic fastener. The anastomotic seat part 1 is a degradable anastomotic seat part, which is one piece. The anastomotic seat part 1 has an anastomotic seat 1-1 with a basic shape of a torus located on the periphery and a connecting plate 1-2 located in the center, and the anastomotic seat 1-1 is uniformly distributed with axial buckle through holes 1-3 along the circumference . There are 22 buckle through holes 1-3 in this embodiment, arranged along two concentric circles, and 11 buckle through holes 1-3 are evenly distributed along an inner circle of the anastomotic seat 1-1, The remaining buckle through holes 1-3 are evenly distributed along an outer circumference of the anastomotic seat 1-1 in a manner of interlacing with the inner buckle through holes 1-3. It is advisable to have 8 to 32 buckle through holes 1-3 on the anastomotic seat 1-1. Between the buckle through holes 1-3 on the anastomotic seat 1-1, there are through grooves 1-5 through the anastomotic seat 1-1 along the radial direction of the anastomotic seat 1-1, so that the anastomotic seat 1 is located in each buckle joint. A corresponding fastening seat 1-6 is formed in the vicinity of the through hole 1-3, and each fastening seat 1-6 is connected to the central connecting plate 1-2. The connecting plate 1-2 is provided with a central hole 1-4.

The anastomotic fastener is a plurality of mutually independent degradable fastening blocks with an axial protruding post 4-1 that can be matched with the corresponding fastening through hole 1-3 of the anastomotic seat 1 during use. 4. The fastening block 4 is one piece. The number of fastening blocks 4 is the same as the number of fastening through holes 1-3 of the anastomotic seat 1-1. The anastomotic fastener in this embodiment has 22 degradable fastening blocks 4 that are independent of each other. The boss 4-1 of each fastening block 4 has a cylinder 4-1-1 shaped as a cylinder, and the boss 4-1 also has a buckle joint 4-1-2 at the top, and the convex post 4-1 of each fastening block 4 The lower part of the column 4-1 is provided with a base 4-2. In this embodiment, the junction of the buckle joint 4-1-2 and the cylinder 4-1-1 has the same diameter as the cylinder, and is shaped like a bullet.

The height of the boss 4-1 of the fastening block 4 is 7 millimeters, wherein the height of the cylinder 4-1-1 of the boss 4-1 is 5 millimeters, and the height of the cylinder 4-1-1 of the boss 4-1 The diameter is 1 millimeter; the plate thickness of the anastomotic seat part 1 is 2 millimeters. The utility model does not have too strict requirements on the size of each part of the fastening block 4, as long as the height of the boss 4-1 is between 3 and 8 millimeters, the height of the cylinder 4-1-1 of the boss 4-1 is between 3 and 8 millimeters. Between 2 and 6 mm, the diameter of the cylinder 4-1-1 is between 0.5 and 1.5 mm, and the plate thickness of the anastomotic seat part 1 is between 0.5 and 3.0 mm.

During use, the post 4-1 of each fastening block 4 of the anastomotic fastener is matched with the fastening through hole 1-3 of the anastomotic seat part 1 by its cylinder 4-1-1. The upper end surface of the seat body 4-2 of each fastening block 4 and the lower end surface of the anastomotic seat part 1 are rough surfaces, or are provided with a grid pattern.

(Anastomotic part embodiment 2)

What Fig. 3～Fig. 5 shows is another embodiment of the anastomotic part of the present invention, the buckle seat 1-6 of the anastomotic seat part 1 is respectively provided with the radial through groove 1-3 that communicates with the buckle through hole 1-3. 7. The fastening block 4 used is shown in Figure 5, the diameter of the junction of the fastening joint 4-1-2 of the fastening block 4 and the cylinder 4-1-1 is larger than the diameter of the cylinder, and the buckle joint 4-1-2 is like an inverted The circular frustum shape prevents the buckling block 4 from breaking away from the buckling seat 1-6. Since each fastening seat 1-6 of the anastomotic seat part 1 has a radial through groove 1-7, the buckle joint 4-1-2 of the fastening block 4 can be easily inserted into the buckle connection on the fastening seat 1-6. Inside holes 1-3. All the other are identical with embodiment 1. The fastening block 4 of this embodiment may also be the fastening block shown in FIG. 2 and FIG. 8 .

(Anastomotic part embodiment 3)

What Fig. 6～Fig. 8 shows is another embodiment of the anastomotic piece of the present invention, the buckle through hole 1-3 on the anastomotic seat 1-1 of the anastomotic seat part 1 of this embodiment is formed by the upper hole section 1-3 -1 and the lower hole section 1-3-2, and the upper hole section 1-3-1 is a counterbore whose diameter is larger than that of the lower hole section 1-3-2. The fastening block 4 used is shown in Figure 8, the diameter of the junction of the buckle joint 4-1-2 of the fastening block 4 and the cylinder 4-1-1 is larger than the diameter of the cylinder, and the buckle joint 4-1-2 is like a mushroom shape. During use, the boss 4-1 of each fastening block 4 of the anastomotic fastener is connected to the lower hole section 1-3-2 of the fastening through hole 1-3 of the anastomotic seat part 1 by its cylinder 4-1-1. Cooperate. The buckle joint 4-1-2 on the upper part of the boss 4-1 is located in the upper hole section 1-3-1 of the buckle through hole 1-3 on the anastomotic seat 1-1. All the other are identical with embodiment 2. The fastening block 4 of this embodiment may also be the fastening block shown in FIG. 5 .

(Anastomotic part embodiment 4)

What Fig. 9 shows is another embodiment of the anastomotic part of the present invention, the buckle through holes 1-3 on the anastomotic seat 1-1 of the anastomotic seat part 1 are arranged along a circle, the number of buckle through holes 1-3 There are 22 pieces; each buckle through hole 1-3 on the anastomotic seat 1-1 is radially provided with a through groove 1-5 that runs through the anastomotic seat 1-1, so that the anastomotic seat part 1 is located in each buckle joint The position near the through hole 1-3 forms a corresponding fastening seat 1-6, and each fastening seat 1-6 is connected on the central connecting plate 1-2; The block 4 adopts the fastening block 4 shown in Fig. 2, and the protruding post 4-1 of the fastening block 4 has a cylinder 4-1-1 in the shape of a cylinder; the matching seat part 1 is one piece; The boss 4-1 of each fastening block 4 cooperates with the fastening through hole 1-3 of the anastomotic seat part 1 by its cylinder 4-1-1 in use.

(stapler embodiment 1)

Figures 10 to 13 show an embodiment of the stapler of the present invention. This embodiment has a fixed knife assembly 10 , an anastomotic seat part 1 , an anastomotic fastener and a stapler main body 30 .

The fixed knife assembly 10 has a circular fixed knife 2 and a connecting sleeve 3 . The circular fixed knife 2 is fixedly connected with the connecting shaft sleeve 3 .

The anastomotic seat part 1 and the anastomotic fastener can adopt the anastomotic seat part and the anastomotic fastener described in the anastomotic part embodiment 1 to the anastomotic part embodiment 4. The anastomotic seat part 1 is sleeved on the connecting shaft sleeve 3 through its central hole 1-4 and is fixedly connected with the circular fixed knife 2 .

The stapler main body 30 has a pusher part 5 and a control part 6 .

The nail pushing part 5 has a positioning sleeve 51 , a staple cartridge 52 and a moving knife assembly 53 . The movable knife assembly 53 has an annular cutter 531 and a nail pushing seat 532 . The seat body of the nail pushing seat 532 is annular, and the annular cutter 531 is inserted into the annular seat of the nail pushing seat 532 from the rear end of the nail pushing seat 532 and the annular cutter 531 is in contact with the seat body of the nail pushing seat 532 . The staple cartridge 52 is fixed on the positioning sleeve 51 . The movable knife assembly 53 is arranged in the positioning sleeve 51 , and the movable knife assembly 53 is axially slidably connected with the positioning sleeve 51 . The push rod of the nail pushing seat 532 extends into the nail groove of the staple cartridge 52 and is located at the rear end of the nail groove. The above-mentioned fastening blocks 4 are arranged in the nail grooves of the staple cartridge 52 and are located at the front ends of the nail grooves (see FIG. 13 ).

The control part 6 has a housing assembly 61 , a transmission assembly 62 , a handle 63 , a top shaft assembly 64 and an adjustment assembly 65 .

The shell assembly 61 is composed of a front shell 611 , a middle shell 612 and a rear shell 613 . The rear housing 613 is formed by connecting two halves of the shells with screws, and the middle housing 612 is plugged into the rear housing 613 and fastened by a tightening sleeve 628 . The front housing 611 is screwed to the middle housing 612 .

The transmission assembly 62 is arranged in the shell assembly 61, and the transmission assembly 62 includes a dial ring 621, a rear return spring 622, a retaining ring 623, a transmission elbow 624, a transmission straight pipe 625, a front return spring 626 and a push head 627, wherein the dial ring 621 It is fixed at the rear end of the transmission elbow 624, and the rear return spring 622 and the retaining ring 623 are sleeved on the transmission elbow 624 and are connected in a sliding manner. The push head 627 is threadedly connected to the front end of the transmission straight pipe 625 . The front return spring 626 is sleeved on the transmission straight pipe 625 and is in sliding connection. The transmission elbow 624 is in contact with the transmission straight pipe 625 . The push head 627 is in contact with the base of the annular cutter 531 of the movable knife assembly 53 .

The jacking shaft assembly 64 is formed by riveting the jacking shaft 641 at the front, the middle shaft body 642 and the control screw rod 643 at the rear, and the middle shaft body 642 adopts a bendable connecting shaft. The jacking shaft assembly 64 passes through the transmission elbow 624 , the transmission straight pipe 625 and the push head 627 of the transmission assembly 62 .

The control knob 651 of the adjustment assembly 65 is threadedly connected to the control screw 643 of the jacking shaft assembly 64 . Rotate the control knob 651 of the transmission adjustment assembly 65, the control screw 643 rotates, and drives the shaft body 642 and the jacking shaft 641 to slide. The shaft 641 drives the fixed knife assembly 10 to slide. Pull the handle 63, the handle 63 drives the dial ring 621, slides through the transmission elbow 624, the transmission straight pipe 625, and the push head 627, and the push head 627 pushes the ring cutter 531, and the ring cutter 531 pushes the push nail seat 532 to slide forward . The post 4-1 of each fastening block 4 is pushed by the push nail seat 532 into the corresponding buckle through hole 1-3 of the anastomotic seat part 1, and the ring cutter 531 cuts off the central connecting plate 1-2 of the anastomotic seat part 1 , so that each fastening seat 1-6 of the anastomotic seat part 1 is separated from each other to complete the anastomosis. Unclamp the handle 63, and under the action of the front and rear return springs 626, 622 and a spring in the handle 63, the handle 63 and the transmission assembly 62 reset.

(stapler embodiment 2)

Figures 14 to 16 show another embodiment of the stapler of the present invention. This embodiment has a fixed knife assembly 10 , an anastomotic seat part 1 , an anastomotic fastener and a stapler main body 30 .

The fixed knife assembly 10 is the same as the embodiment 3, and also has a circular fixed knife 2 and a connecting sleeve 3 . The circular fixed knife 2 is fixedly connected with the connecting shaft sleeve 3 .

The anastomotic seat part 1 and the anastomotic fastener can adopt the anastomotic seat part and the anastomotic fastener introduced in Embodiment 1 to Embodiment 4. The anastomotic seat part 1 is sleeved on the connecting shaft sleeve 3 through its central hole 1-4 and is fixedly connected with the circular fixed knife 2 .

The stapler main body 30 has a pusher part 5 and a control part 6 .

The nail pushing part 5 has a positioning sleeve 51 , a staple cartridge 52 and a moving knife assembly 53 . The movable knife assembly 53 has an annular cutter 531 and a nail pushing seat 532 . The seat body of the nail pushing seat 532 is annular, and the annular cutter 531 is inserted into the annular seat of the nail pushing seat 532 from the front end of the nail pushing seat 532 , and the annular cutter 531 is in contact with the seat body of the nail pushing seat 532 . The staple cartridge 52 and the movable knife assembly 53 are arranged in the positioning sleeve 51 , and the movable knife assembly 53 is axially slidably connected with the positioning sleeve 51 . The push rod of the nail pushing seat 532 extends into the nail groove of the staple cartridge 52 and is located at the rear end of the nail groove. The above-mentioned fastening blocks 4 are arranged in the nail grooves of the staple cartridge 52 and are located at the front ends of the nail grooves.

The control part 6 has a housing assembly 61 , a transmission assembly 62 , a handle 63 , a top shaft assembly 64 and an adjustment assembly 65 .

The shell assembly 61 is composed of a middle shell 612 and a rear shell 613 . The rear housing 613 is formed by connecting two halves of the shells with screws, and the middle housing 612 is plugged into the rear housing 613 and fastened by a tightening sleeve 628 . The positioning sleeve 51 is inserted into the middle housing 612 .

The transmission assembly 62 is arranged in the shell assembly 61. The transmission assembly 62 includes a plastic toggle lever 629. The rear end of the toggle lever 629 is a toggle head 629-2, and the front end is a push head 629-1. The toggle lever 629 is one piece. elastic. The push head 629 - 1 is in contact with the seat body of the nail push seat 532 of the movable knife assembly 53 .

The jacking shaft assembly 64 is formed by riveting a front jacking shaft 641 , a middle shaft body 642 and a rear control screw 643 , and the middle shaft body 642 is a shaft body made of an elastic steel plate. The top shaft 641 of the jacking shaft assembly 64 protrudes forward through the push head 629-1 of the toggle lever 629, and the control screw 643 passes through the toggle head 629-2 of the toggle lever 629 and is threadedly connected with the control knob 651 of the adjustment assembly 65 .

Rotate the control knob 651 of the transmission adjustment assembly 65, the control screw 643 rotates, and drives the shaft body 642 and the top shaft 641 to slide. Since the top shaft 641 passes through the push head 629-1 and engages with the connecting sleeve 3 of the fixed knife assembly 10, Therefore, the top shaft 641 drives the fixed knife assembly 10 to slide. Pull the handle 63, the handle 63 drives the toggle lever 629 to slide through the toggle head 629-2 of the toggle lever 629, the push head 629-1 on the toggle lever 629 pushes the nail pusher 532 and the ring cutting is pushed by the nail pusher 532 The knife 531 slides forward. The post 4-1 of each fastening block 4 is pushed by the push nail seat 532 into the corresponding buckle through hole 1-3 of the anastomotic seat part 1, and the ring cutter 531 cuts off the central connecting plate 1-2 of the anastomotic seat part 1 , so that each fastening seat 1-6 of the anastomotic seat part 1 is separated from each other to complete the anastomosis. Release the handle 63, and under the action of the return spring 63-1 on the handle 63, the handle 63 and the toggle lever 629 reset.

Claims (18)

1. A degradable anastomotic piece for human digestive tract tubular tissue, which has a degradable anastomotic seat (1) and a degradable anastomotic fastener; it is characterized in that: the anastomotic seat (1) has a basic shape located at the periphery of The anastomotic seat (1-1) in the shape of a ring and the connecting plate (1-2) in the center, the anastomotic seat (1-1) has 8 to 32 axial buckle through holes (1-3) evenly distributed along the circumference ), the connecting plate (1-2) is provided with a central hole (1-4); the anastomotic fasteners are independent of each other and have corresponding buckle through holes (1) that can be used with the anastomotic seat (1) -3) The fastening block (4) of the cooperating axial boss (4-1), and the number of the fastening block (4) is the same as the fastening through hole (1-3) of the anastomotic seat (1-1) ) shall prevail. 2. The human digestive tract tubular tissue degradable anastomotic piece according to claim 1, characterized in that: the buckle through hole (1-3) on the anastomotic seat (1-1) of the anastomotic seat (1) is along the Two concentric circles are arranged, wherein 8 to 16 buckle through holes (1-3) are evenly distributed along a circle on the inner side of the anastomotic seat (1-1), and the rest of the same number of buckle through holes ( 1-3) Distribute evenly along an outer circumference of the anastomotic seat (1-1) in a manner of interlacing with the inner buckle through holes (1-3); each buckle on the anastomotic seat (1-1) Through holes (1-3) are provided with through grooves (1-5) through the anastomotic seat (1-1) along the radial direction of the anastomotic seat (1), so that the anastomotic seat (1) is located in each A corresponding fastening seat (1-6) is formed in the vicinity of the fastening through hole (1-3), and each fastening seat (1-6) is connected to the central connecting plate (1-2). 3. The human digestive tract tubular tissue degradable anastomotic piece according to claim 2, characterized in that: each fastening seat (1-6) of the above-mentioned anastomotic seat (1) is provided with the fastening seat (1-6) the radial through groove (1-7) that the buckle access hole (1-3) on the (1-6) communicates. 4. The human digestive tract tubular tissue degradable anastomotic piece according to claim 2 or 3, characterized in that: each fastening block (4) of the anastomotic fastener is one piece, and the protrusions of the fastening block (4) (4-1) has a cylinder (4-1-1) in the shape of a cylinder; the anastomotic seat (1) is one piece; the protruding posts (4-1) of each fastening block (4) of the anastomotic fastener It consists of a cylinder (4-1-1) and a buckle joint (4-1-2) on the upper part of the cylinder (4-1-1). The cylinder (4-1-1) is in use with an anastomotic seat (1) is matched with the buckle through hole (1-3). 5. The human digestive tract tubular tissue degradable anastomotic piece according to claim 4, characterized in that: the diameter of the joint between the buckle joint (4-1-2) and the cylinder (4-1-1) can be the same as that of the cylinder The diameters of the bodies (4-1-1) are the same, and may also be greater than the diameters of the cylinders (4-1-1). 6. The human digestive tract tubular tissue degradable anastomotic piece according to claim 5, characterized in that: the height of the boss (4-1) of each fastening block (4) of the anastomotic fastener is 3 to 8 mm , wherein the height of the cylinder (4-1-1) of the boss (4-1) is 2 to 6 millimeters; the diameter of the cylinder (4-1-1) of the boss (4-1) is 0.5 to 1.5 mm; the plate thickness of the fitting seat (1) is 0.5 to 3.0 mm. 7. The human digestive tract tubular tissue degradable anastomotic piece according to claim 6, characterized in that: the lower part of the boss (4-1) of each fastening block (4) is provided with a base (4-2) , the upper end surface of the seat body (4-2) and the lower end surface of the anastomotic seat member (1) are rough surfaces, or are provided with grid patterns. 8. The human digestive tract tubular tissue degradable anastomotic piece according to claim 7, characterized in that: the buckle through hole (1-3) of the anastomotic seat (1) is formed by the upper hole section (1-3-1 ) and the lower hole section (1-3-2), the upper hole section (1-3-1) is a counterbore with a diameter larger than the lower hole section (1-3-2), and fits the buckles of the fastener when used The boss (4-1) of the combined block (4) is formed by the lower hole section (1-3-1) of the buckle through hole (1-3) of its cylinder (4-1-1) and the anastomotic seat part (1). 2) Match. 9. The human digestive tract tubular tissue degradable anastomotic piece according to claim 1, characterized in that: the buckle through hole (1-3) on the anastomotic seat (1-1) of the anastomotic seat (1) is along the Arranged in a circle; between the buckle through holes (1-3) on the anastomosis seat (1-1), there are through grooves (1-5) through the anastomosis seat (1-1) in the radial direction, so that the anastomosis A corresponding fastening seat (1-6) is formed at the position of the seat part (1) near each buckle through hole (1-3), and each fastening seat (1-6) is connected to the central connecting plate (1-6). 2) above; each fastening block (4) of the anastomotic fastener is integrated, and the protruding post (4-1) of the fastening block (4) has a cylinder (4-1-1) in the shape of a cylinder; The seat part (1) is one piece; the protruding post (4-1) of each fastening block (4) of the anastomotic fastener is connected with the anastomotic seat part (1) by its cylinder (4-1-1) when in use. Buckle through holes (1-3) to match. 10. A human digestive tract tubular tissue stapler, with a stapler main body (30), the stapler main body (30) has a pusher part (5) and a control part (6); the pusher part (5) has a positioning sleeve (51), staple bin (52) and moving knife assembly (53); Moving knife assembly (53) has annular cutting knife (531) and pushing nail seat (532); Ring cutting knife (531) and pushing nail seat (532) ) in contact with the seat body; the staple bin (52) is fixed on the positioning sleeve (51); the moving knife assembly (53) is arranged in the positioning sleeve (51), and the moving knife assembly (53) and the positioning sleeve (51) shaft to the sliding connection; the push rod of the nail pusher seat (532) stretches into the nail groove of the nail bin (52) and is positioned at the rear end of the nail groove; the control part (6) has a housing assembly (61), a transmission assembly (62), Handle (63), top shaft assembly (64) and adjustment assembly (65); transmission assembly (62) is arranged in the shell assembly (61), and can slide in shell assembly (61), and is controlled by handle (63) The sliding of the transmission assembly (62); the power output end of the transmission assembly (62) is in contact with the moving knife assembly (53); the top shaft assembly (64) is arranged in the housing assembly (61), and passes through the transmission assembly (62) ; The control knob (651) of the adjustment assembly (65) is threadedly connected with the control screw (649) of the jacking shaft assembly (64); it is characterized in that: the stapler also has a fixed knife assembly (10), an anastomotic seat (1 ) and anastomotic fasteners; the fixed knife assembly (10) has a circular fixed knife (2) and a connecting bushing (3); the circular fixed knife (2) is fixedly connected with the connecting bushing (3); the anastomotic seat (1 ) is a degradable anastomosis seat, and the anastomosis seat (1) has an anastomosis seat (1-1) with a circular ring-shaped basic shape on the periphery and a connecting plate (1-2) at the center, and an anastomosis seat (1-1) 1) There are 8 to 32 axial buckle through holes (1-3) evenly distributed along the circumference, and a central hole (1-4) is provided on the connecting plate (1-2); the anastomotic seat (1) passes through it The central hole (1-4) is set on the connecting shaft sleeve (3) and is fixedly connected with the circular fixed knife (2); the anastomotic fasteners (20) are mutually independent and have a plurality of anastomotic seats when in use The degradable fastening block (4) of the axial boss (4-1) matched with the corresponding fastening through hole (1-3) of the piece (1), and the number of fastening blocks (4) The number of all the bosses (4-1) is the same as the number of the fastening holes (1-3) of the anastomotic seat (1-1); In the nail groove and at the front end of the nail groove; the connecting bushing (3) of the fixed knife assembly (10) can be fastened with the top shaft (641) of the top shaft assembly (64) of the control part (6). 11. The human digestive tract tubular tissue stapler according to claim 10, characterized in that: the buckle through hole (1-3) on the anastomotic seat (1-1) of the anastomotic seat part (1) is along two Concentric circular arrangement, wherein 8 to 16 buckle through holes (1-3) are uniformly distributed along a circumference of the anastomosis seat (1-1) on the inner side, and the remaining buckle through holes (1-3) of the same number 3) Distribute evenly along a circumference of the anastomotic seat (1-1) on the outside in a manner of interlacing with the inner buckle through holes (1-3); each buckle on the anastomotic seat (1-1) is connected Between the holes (1-3) there are through grooves (1-5) through the anastomotic seat (1-1) along the radial direction of the anastomotic seat (1), so that the anastomotic seat (1) is located at each buckle A corresponding fastening seat (1-6) is formed in the vicinity of the through hole (1-3), and each fastening seat (1-6) is connected to the central connecting plate (1-2). 12. The human digestive tract tubular tissue stapler according to claim 11, characterized in that: each fastening seat (1-6) of the above-mentioned anastomotic seat part (1) is provided with the fastening seat (1-6) -6) The radial through groove (1-7) that the buckle through hole (1-3) on the top communicates. 13. The human digestive tract tubular tissue stapler according to claim 11 or 12, characterized in that: each fastening block (4) of the anastomotic fastener (20) is one piece, and the protrusion of the fastening block (4) The column (4-1) has a column body (4-1-1) in the shape of a cylinder; the anastomotic seat (1) is one piece; ) is matched with the buckle through hole (1-3) of the anastomotic seat part (1) by its cylinder (4-1-1) when in use. 14. The human digestive tract tubular tissue stapler according to claim 13, characterized in that: the boss (4-1) of each fastening block (4) of the fastening fastener also has a buckle joint (4) on the upper part -1-2), the bottom of the boss (4-1) of each fastening block (4) is provided with a seat (4-2); the buckle joint (4-1-2) and the cylinder (4-1- 1) The diameter of the junction can be the same as the diameter of the cylinder (4-1-1), or larger than the diameter of the cylinder (4-1-1). 15. The human digestive tract tubular tissue stapler according to claim 14, characterized in that: the buckle through hole (1-3) of the anastomotic seat (1) consists of the upper hole section (1-3-1) and The lower hole section (1-3-2) is composed of the upper hole section (1-3-1) which is a counterbore with a diameter larger than the lower hole section (1-3-2), and fits the fastening blocks of the fastener when used The boss (4-1) of (4) is formed by the lower hole section (1-3-2) of the buckle through hole (1-3) of its cylinder (4-1-1) and anastomotic seat (1) match. 16. The human digestive tract tubular tissue stapler according to claim 15, characterized in that: the height of the boss (4-1) of each fastening block (4) of the fastening fastener is 3 to 8 mm, wherein The height of the cylinder (4-1-1) of the boss (4-1) is 2 to 6 millimeters; the diameter of the cylinder (4-1-1) of the boss (4-1) is 0.5 to 1.5 millimeters; The plate thickness of the anastomotic seat part (1) is 0.5 to 3.0 mm. 17. The human digestive tract tubular tissue stapler according to claim 16, characterized in that: the upper end surface of the seat (4-2) of each fastening block (4) of the fastening fastener and the fastening seat (1) ) is a rough surface or is provided with a grid pattern. 18. The human digestive tract tubular tissue stapler according to claim 10, characterized in that: the buckle through hole (1-3) on the anastomotic seat (1-1) of the anastomotic seat part (1) is along a circle Arrangement: There are through grooves (1-5) through the anastomotic seat (1-1) in the radial direction between the buckle through holes (1-3) on the anastomotic seat (1-1), so that the anastomotic seat (1) A corresponding buckle seat (1-6) is formed at the position near each buckle through hole (1-3), and each buckle seat (1-6) is connected to the central connecting plate (1-2) Top; each fastening block (4) of the anastomotic fastener is one piece, and the protruding post (4-1) of the fastening block (4) has a cylinder (4-1-1) in the shape of a cylinder; the anastomotic seat part (1) One piece; the convex post (4-1) of each fastening block (4) of the anastomotic fastener is fastened with the anastomotic seat (1) by its cylinder (4-1-1) when in use Through holes (1-3) match.

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