CN111407347B - Nail anvil seat of folding anastomat - Google Patents
Nail anvil seat of folding anastomat Download PDFInfo
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- CN111407347B CN111407347B CN202010242966.1A CN202010242966A CN111407347B CN 111407347 B CN111407347 B CN 111407347B CN 202010242966 A CN202010242966 A CN 202010242966A CN 111407347 B CN111407347 B CN 111407347B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B17/115—Staplers for performing anastomosis in a single operation
- A61B17/1155—Circular staplers comprising a plurality of staples
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Abstract
The invention discloses a foldable stapler nail anvil block, belonging to the stapler nail anvil block field, comprising a nail anvil rod and a pair of semicircular nail anvils which can be spliced into a complete circle, wherein one end of the semicircular nail anvils close to the nail anvil rod is fixedly connected with a connecting sheet, a nail anvil component is connected between the nail anvil rod and the connecting sheet, the nail anvil rod and the semicircular nail anvil can be conveniently switched between a vertical state and a horizontal state through a first component, the semicircular nail anvil can be conveniently unfolded and closed through a second component, the reduction of the front cross section of the device placed in an esophagus can be effectively realized, the device can be conveniently returned to a working state after reaching a designated position through a narrow esophagus, an elastic contraction component is additionally arranged to assist in quick return, in addition, the switching from the placing state to the working state is realized by abutting against a cut rope body, and is very convenient and quick, greatly reduces the operation difficulty and improves the operation efficiency.
Description
Technical Field
The invention relates to the field of nail anvil bases of anastomats, in particular to a folding type nail anvil base of an anastomat.
Background
The tubular digestive tract anastomat is used for performing anastomosis by using double rows of titanium nails which are arranged in a crossed mode, redundant tissues are cut off from the inner cutting edges of the anastomosis nails by a cutter to form anastomosis openings during anastomosis, the sizes of the apertures are consistent, mucous membranes are in alignment, the fastness of the anastomosis openings is reliable, the hemostasis effect and blood circulation are good, the anastomosis cutting is completed at one time, and the operation is convenient.
However, with the current minimally invasive laparoscopic technique of gastrointestinal surgery developed gradually, it is difficult to place the stapler anvil block under the laparoscope, and particularly, higher position of the stapler anvil block is required for higher position of cardiac cancer. The diameter of a nail anvil seat of an existing anastomat needs to be enough to prevent narrow of an anastomotic stoma, in the operation process, the nail anvil seat of the anastomat is usually required to be installed on a PVC conveying pipe which is 90cm long and is fixed with the pipe through a fixing line, then the anastomat is placed in the anastomat from a patient oral cavity through an esophagus and is guided to reach an anastomotic end through the conveying pipe, but the nail anvil seat is directly placed into the esophagus of the patient to be easily injured due to the fact that the esophagus of the patient is three narrow, so that the injury to the patient is reduced by obliquely placing the nail anvil seat in the prior art, the diameter of the nail anvil seat is circular, the probability of injury to the esophagus of the patient is not changed, the smaller the better the transverse diameter of the nail anvil seat is when the nail anvil seat is placed, the nail anvil seat can be quickly restored to a working state after being placed.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a nail anvil seat of a folding anastomat, which can realize that a nail anvil rod and a semicircular nail anvil can be conveniently switched between a vertical state and a horizontal state through a first component, and a pair of semicircular nail anvils can be conveniently unfolded and closed through a second component, so that the reduction of the front cross section of the device placed in an esophagus is effectively realized, the device can conveniently pass through a narrow esophagus and can be restored to a working state after reaching a specified position, an elastic contraction piece is additionally arranged to assist in quick restoration, and in addition, the switching from the placing state to the working state is realized by abutting against a cut rope body, so that the folding anastomat is very convenient and quick, the operation difficulty is greatly reduced, and the operation efficiency is improved.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A foldable stapler nail anvil base comprises a nail anvil rod and a pair of semicircular nail anvils which can be spliced into a complete circle, wherein one ends of the semicircular nail anvils, close to the nail anvil rod, are fixedly connected with connecting pieces, a nail anvil assembly is connected between the nail anvil rod and the connecting pieces, the nail anvil assembly comprises a first assembly and a second assembly which are fixedly connected, the first assembly controls the nail anvil rod and the semicircular nail anvils to be vertically distributed, and the second assembly controls the semicircular nail anvils to be unfolded towards two outer sides to be in contact with the side walls of the nail anvil rod, so that the cross sections of the semicircular nail anvils are reduced;
the second assembly comprises a unfolding return mechanism and a central point limiting mechanism, the unfolding return mechanism controls a pair of semi-circular nail anvils which are unfolded towards two outer sides to automatically rotate towards the inner sides, and the central point limiting mechanism controls the pair of semi-circular nail anvils to rotate around the same circle center;
the nail anvil component is connected with a shearable rope body, the nail anvil rod is perpendicular to the semicircular nail anvil when the rope body is not sheared and straightened, the semicircular nail anvils are unfolded towards two outer sides, when the rope body is sheared and loosened, the semicircular nail anvils are restored and kept to be in the same straight line with the nail anvil rod under the action of the first component, and the semicircular nail anvils automatically rotate inwards to be spliced into a complete circle under the combined action of the unfolding restoration mechanism and the central point limiting mechanism.
Further, the second subassembly includes the reference column, cuts out the swivelling chute, the inner wall is close to about the swivelling chute of keeping away from first subassembly end at the reference column respectively fixed connection the stopper of swivelling chute notch department, connect about the swivelling chute between the inner wall and be close to the connecting axle of swivelling chute tank bottom and cup joint the second torsional spring in the connecting axle outside, the both ends of second torsional spring run through respectively connection piece and the spacing piece of fixedly connected with, the second torsional spring is used for making a pair of semicircle nail anvil rotate the closure to the inboard when no exogenic action and be circular.
Furthermore, an elastic contraction piece is sleeved at the outer end of the connecting shaft, when the rope body is not cut and straightened, the pair of semicircular nail anvils is unfolded towards two outer sides, the second torsion spring contracts towards the center to extrude the elastic contraction piece to enable the elastic contraction piece to stretch vertically, and when the rope body is cut and loosened, the elastic contraction piece returns towards the middle to assist the second torsion spring to loosen, so that the pair of semicircular nail anvils is closed towards the inner side.
Furthermore, the elastic contraction part comprises an extension spring sleeved outside the connecting shaft and a pair of sliding sleeves with gradually changed outer diameters, wherein the sliding sleeves are respectively connected with two ends of the extension spring, and one ends of the sliding sleeves, which are far away from the extension spring, are gradually enlarged.
Furthermore, a corrugated sleeve is fixedly connected between the pair of sliding sleeves and is positioned between the extension spring and the second torsion spring, so that the extension spring and the second torsion spring are not easy to interfere with each other.
Furthermore, the central point limiting mechanism comprises roller grooves cut at the upper side end and the lower side end of the connecting sheet, rollers arranged in the roller grooves and arc-shaped rails cut on the upper inner wall and the lower inner wall of the rotating groove, the rollers are arranged in the arc-shaped rails and move along the arc-shaped rails, the arc-shaped rails are arranged by taking the connecting shafts as circle centers, and the rotating tracks of the semicircular nail anvils are controlled by matching the roller grooves and the rollers.
Furthermore, the positioning column is arranged to be of a square structure, so that the arc-shaped track is as long as possible, and the pair of semi-circular nail anvils can be unfolded conveniently.
Further, the first assembly comprises a mounting groove formed in the top end of the anvil rod, a rotating shaft rotatably connected between the two inner walls of the mounting groove, a first torsion spring and a rotating plate of a shape structure, wherein the first torsion spring and the rotating plate are respectively sleeved on the outer side of the rotating shaft, the rotating plate is fixedly connected with the first assembly, and the first torsion spring is located on the inner side of the rotating plate and used for enabling the anvil rod and the semicircular anvil to automatically return to the same straight line state from the vertical state.
Furthermore, the edges of the ends, close to each other, of the pair of semi-circular nail anvils are provided with round corners, so that the inner wall of the esophagus is not easy to be injured.
Furthermore, the rope body comprises a branch rope which is fixed on the pair of connecting pieces and pulls the pair of semi-circular nail anvils to expand outwards, the branch ropes penetrate through the positioning columns and penetrate out from the rear ends of the positioning columns to be converged into a strand which extends outwards, the rope body is convenient to keep the pair of semi-circular nail anvils in an expanded state, and meanwhile the semi-circular nail anvils and the nail anvil rod are in a vertical state.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
one, this scheme can realize being convenient for nail hammering block pole and semicircle nail anvil to switch in perpendicular and horizontal state through first subassembly, the expansion and the closing of a pair of semicircle nail anvil of being convenient for through the second subassembly, effectively realize reducing of cross section before this device puts into the esophagus, thereby it is convenient for it to pass through constrictive esophagus, and can reply it to operating condition after reacing the assigned position again, wherein still be equipped with the supplementary quick answer of elastic contraction piece in addition, put into state to operating condition's switching in addition, near cutting off the rope body and realizing, very convenient quick, greatly reduced the operation degree of difficulty, the efficiency of the operation is improved.
The second assembly comprises a positioning column, a rotary groove which is far away from the end of the first assembly is formed in the positioning column, a limiting block which is fixedly connected to the upper inner wall and the lower inner wall of the rotary groove and is close to the groove opening of the rotary groove, a connecting shaft which is connected to the upper inner wall and the lower inner wall of the rotary groove and is close to the groove bottom of the rotary groove and a second torsion spring which is sleeved on the outer side of the connecting shaft are respectively connected to the upper inner wall and the lower inner wall of the rotary groove, two ends of the second torsion spring respectively penetrate through a connecting sheet and a limiting sheet.
And thirdly, an elastic contraction part is sleeved at the outer end of the connecting shaft, when the rope body is not cut off and tightened, the pair of semicircular nail anvils is unfolded towards two outer sides, the second torsion spring contracts towards the center to extrude the elastic contraction part to enable the elastic contraction part to stretch vertically, when the rope body is cut off and loosened, the elastic contraction part returns to the middle part to assist the second torsion spring to loosen, so that the pair of semicircular nail anvils are closed towards the inner side, the elastic contraction part comprises an extension spring sleeved on the outer side of the connecting shaft and a pair of sliding sleeves with gradually-changed outer diameters respectively connected with the two ends of the extension spring, and.
And a corrugated sleeve is fixedly connected between the pair of sliding sleeves and is positioned between the extension spring and the second torsion spring, so that the extension spring and the second torsion spring are not easy to interfere with each other.
And the central point limiting mechanism comprises roller grooves chiseled at the upper and lower side ends of the connecting sheet, rollers arranged in the roller grooves and arc-shaped rails chiseled at the upper and lower inner walls of the rotating grooves, the rollers are arranged in the arc-shaped rails and move along the arc-shaped rails, the arc-shaped rails are arranged by taking the connecting shaft as the center of a circle, and the rotating track of the semicircular nail anvil is controlled by the matching of the roller grooves and the rollers.
Sixthly, the positioning column is arranged to be of a square structure, so that the arc-shaped track is as long as possible, and the pair of semi-circular nail anvils can be unfolded conveniently.
Seventhly, the first assembly comprises a mounting groove formed in the top end of the anvil rod, a rotating shaft rotatably connected between the two opposite inner walls of the mounting groove, a first torsion spring and a rotating plate of a shape structure, the rotating plate is respectively sleeved on the outer side of the rotating shaft, the rotating plate is fixedly connected with the first assembly, and the first torsion spring is located on the inner side of the rotating plate and used for enabling the anvil rod and the semicircular anvil to automatically return to the same straight line state from the vertical state.
And the edges of one ends of the pair of semi-circular nail anvils close to each other are provided with round corners, so that the inner wall of the esophagus is not easy to be injured.
And the rope body comprises a branch rope which is fixed on the pair of connecting pieces and pulls the pair of semi-circular nail anvils to expand outwards, the pair of branch ropes penetrate through the positioning columns and penetrate out from the rear ends of the positioning columns to be converged into a strand to extend outwards, so that the pair of semi-circular nail anvils can be kept in an expanded state by the rope body, and meanwhile, the semi-circular nail anvils and the nail anvil rod are in a vertical state.
Drawings
FIG. 1 is a perspective view of the rope of the present invention when straight and uncut;
FIG. 2 is a schematic view of the structure at A in FIG. 1;
FIG. 3 is a perspective view of the structure at a second assembly of the present invention;
FIG. 4 is a schematic view of the elastic contractible member at the second component of the present invention in cross section;
FIG. 5 is an unbroken diagrammatic view of an elastic contractible member at a second component of the invention;
FIG. 6 is a perspective view of the semi-circular anvil of the present invention perpendicular to the anvil shaft;
fig. 7 is a structural perspective view of the present invention in a working state after entering a human body.
The reference numbers in the figures illustrate:
1, an anvil rod;
2, a nail anvil component;
21 a first component; 211 mounting grooves, 212 rotating shafts, 213 first torsion springs and 214 rotating plates;
22a second component; 22a positioning column; 22b a limiting block; 22c connecting the shafts; 22d second torsion spring, 22d1 spacing piece; 22f elastic contraction piece, 22f1 extension spring, 22f2 sliding sleeve and 22f3 corrugated sleeve; 22g center point defining mechanism, 22g1 roller, 22g2 arc track;
3 a semi-circular nail anvil and 31 connecting sheets;
4 rope bodies.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1-7, a foldable stapler nail anvil base comprises a nail anvil rod 1 and a pair of semicircular nail anvils 3 which can be spliced into a complete circle, wherein one ends of the semicircular nail anvils 3 close to the nail anvil rod 1 are fixedly connected with a connecting sheet 31, a nail anvil assembly 2 is connected between the nail anvil rod 1 and the connecting sheet 31, the nail anvil assembly 2 comprises a first assembly 21 and a second assembly 22 which are fixedly connected, the first assembly 21 controls the vertical distribution of the nail anvil rod 1 and the semicircular nail anvils 3, and the second assembly 22 controls the pair of semicircular nail anvils 3 to expand towards two outer sides to be contacted with the side wall of the nail anvil rod 1, so that the cross section of the pair of semicircular nail anvils 3 is reduced;
the second assembly 22 comprises a unfolding return mechanism and a central point limiting mechanism 22g, the unfolding return mechanism controls the pair of semicircular nail anvils 3 which are unfolded towards two outer sides to automatically rotate towards the inner sides, and the central point limiting mechanism 22g controls the pair of semicircular nail anvils 3 to rotate around the same circle center;
the nail anvil component 2 is connected with a shearable rope body 4, when the rope body 4 is not sheared and straightened, the nail anvil rod 1 is perpendicular to the semicircular nail anvil 3, the pair of semicircular nail anvils 3 is unfolded towards two outer sides, when the rope body 4 is sheared and loosened, the semicircular nail anvil 3 is restored and kept to be in the same straight line with the nail anvil rod 1 under the action of the first component 21, and the pair of semicircular nail anvils 3 automatically rotate inwards under the combined action of the unfolding restoration mechanism and the central point limiting mechanism 22g to be spliced into a complete circle.
Referring to fig. 2-5, the second assembly 22 includes a positioning post 22a, a rotating slot cut on the positioning post 22a far away from the first assembly 21, limit blocks 22b fixedly connected to the upper and lower inner walls of the rotating slot and close to the slot opening of the rotating slot, a connecting shaft 22c connected between the upper and lower inner walls of the rotating slot and close to the slot bottom of the rotating slot, and a second torsion spring 22d sleeved outside the connecting shaft 22c, two ends of the second torsion spring 22d respectively penetrate through the connecting sheet 31 and are fixedly connected with limit pieces 22d1, and the second torsion spring 22d is used for enabling the pair of semi-circular nail anvils 3 to rotate inwards and close to form a circular shape when no external force is.
Referring to fig. 2-5, an elastic contracting member 22f is sleeved on the outer end of the connecting shaft 22c, when the rope 4 is not cut and tightened straight, the pair of semi-circular nail anvils 3 are unfolded towards two outer sides, the second torsion spring 22d contracts towards the center to squeeze the elastic contraction piece 22f to enable the elastic contraction piece to stretch vertically, when the rope body 4 is cut loose, the elastic contraction piece 22f returns towards the middle to assist the second torsion spring 22d to loosen, the pair of semi-circular anvils 3 are closed inwards, the elastic contraction piece 22f comprises an extension spring 22f1 sleeved on the outer side of the connecting shaft 22c and a pair of sliding sleeves 22f2 with gradually changed outer diameters respectively connected with two ends of the extension spring 22f1, one end of the outer diameter of the sliding sleeve 22f2, which is far away from the extension spring 22f1, is gradually enlarged, a corrugated sleeve 22f3 is fixedly connected between the pair of sliding sleeves 22f2, and the corrugated sleeve 22f3 is located between the extension spring 22f1 and the second torsion spring 22d, so that the extension spring 22f1 and the second torsion spring 22d are not easy to interfere with each other.
Referring to fig. 3-5, the central point limiting mechanism 22g includes roller slots cut at the upper and lower ends of the connecting plate 31, a roller 22g1 installed inside the roller slot, and an arc-shaped rail 22g2 cut at the upper and lower inner walls of the rotating slot, the roller 22g1 is disposed in the arc-shaped rail 22g2 and moves along the arc-shaped rail 22g2, the arc-shaped rail 22g2 is disposed around the connecting shaft 22c, the rotation track of the semi-circular anvil 3 is controlled by the cooperation of the roller slots and the roller 22g1, and the central point limiting mechanism 22g is used for limiting the rotation track of the connecting plate 31, so that the pair of semi-circular anvils 3 rotate around the connecting shaft 22 c.
The positioning post 22a is configured to be a square structure, so that the arc-shaped rail 22g2 is as long as possible, thereby facilitating the expansion of the pair of semi-circular nail anvils 3, and the edges of the ends of the pair of semi-circular nail anvils 3 close to each other are all provided with round corners, so that the inner wall of the esophagus is not easily injured.
Referring to fig. 6, the rope 4 includes a branch rope fixed on the pair of connecting pieces 31 for pulling the pair of semi-circular nail anvils 3 to expand outward, and the pair of branch ropes pass through the positioning posts 22a and then penetrate out from the rear ends thereof to converge into a strand which extends outward, so that the rope 4 is used to keep the pair of semi-circular nail anvils 3 in the expanded state, and at the same time, the semi-circular nail anvils 3 and the nail anvil rod 1 are in a vertical state.
Referring to fig. 7, the first assembly 21 includes a mounting slot 211 formed at the top end of the anvil rod 1, a rotating shaft 212 rotatably connected between two opposite inner walls of the mounting slot 211, a first torsion spring 213 and a rotating plate 214 having a U-shaped structure respectively sleeved outside the rotating shaft 212, the rotating plate 214 is fixedly connected with the first assembly 21, and the first torsion spring 213 is located inside the rotating plate 214 and is used for automatically returning the anvil rod 1 and the semi-circular anvil 3 to a same straight line state from a vertical state.
In practical use, the anvil rod 1 and the rope 4 are fixedly connected to the PVC conveying conduit, so that the rope 4 is in a stretched state, moves in the esophagus of a patient along with the PVC conveying conduit, and is cut off before being connected with the anastomotic end of the anastomat after being in place to recover, and the prior art can be referred to for how to convey the device into a human body by utilizing the PVC conveying conduit.
When the rope body 4 is stretched straight, the pair of semicircular nail anvils 3 are unfolded towards two sides until the semicircular nail anvils 3 are contacted with the outer wall of the nail anvil rod 1 and stopped when being blocked by the nail anvil rod 1, and meanwhile, the semicircular nail anvils 3 are vertical to the nail anvil rod 1, namely, the device is in the state shown in figure 1, the cross section of the device is reduced at the moment, the device is favorable for moving in an esophagus and is not easy to cause injury to the esophagus, wherein figure 6 shows that the semicircular nail anvils 3 are vertical to the nail;
when the rope 4 is cut, the pair of semi-circular anvils 3 lose the acting force of the rope 4 and return to the inner side under the action of the second torsion spring 22d, the roller 22g1 moves along the arc-shaped track 22g2, the pair of semi-circular anvils 3 are spliced into a circular structure, and simultaneously, under the action of the first torsion spring 213, the positioning column 22a rotates around the rotating shaft 212 as the center of a circle to keep a straight line with the anvil rod 1, at this time, please refer to fig. 7, which is the unfolding working state after entering the human body.
The scheme is convenient for the switching between the anvil rod 1 and the semicircular nail anvil 3 in vertical and horizontal states through the first component 21, is convenient for the unfolding and the closing of the pair of semicircular nail anvils 3 through the second component 22, and adopts the elastic contraction component 22f to assist the rapid return of the second torsion spring 22d in the second component 22, thereby greatly improving the return speed, simultaneously prolonging the service life of the second torsion spring 22d and leading the using effect to be better, wherein, the central point limiting mechanism 22g greatly controls the moving track of the pair of semicircular nail anvils 3, the distance between the semicircular nail anvils 3 and the upper and lower inner walls of the rotating groove is effectively controlled, after the pair of semicircular nail anvils 3 are spliced, the nail forming grooves arranged on the semicircular nail anvils can effectively correspond, the nail forming effect is not easy to be influenced, the reduction of the front cross section of the device is effectively realized, thereby being convenient for the device to pass through a narrow esophagus and being capable of returning the device to a, the elastic contraction piece 22f is additionally arranged to assist quick recovery, switching from the putting state to the working state is realized by abutting against the cut rope body 4, the operation is very convenient and quick, the operation difficulty is greatly reduced, and the operation efficiency is improved.
The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (10)
1. The foldable stapler anvil block is characterized by comprising an anvil rod (1) and a pair of semicircular anvil blocks (3) which can be spliced into a complete circle, wherein one ends of the semicircular anvil blocks (3) close to the anvil rod (1) are fixedly connected with connecting pieces (31), an anvil block assembly (2) is connected between the anvil rod (1) and the connecting pieces (31), the anvil block assembly (2) comprises a first assembly (21) and a second assembly (22) which are fixedly connected, the first assembly (21) controls the anvil rod (1) and the semicircular anvil blocks (3) to be vertically distributed, the second assembly (22) controls the semicircular anvil blocks (3) to be unfolded towards two outer sides to be in contact with the side walls of the anvil rod (1), and the cross sections of the semicircular anvil blocks (3) are reduced;
the second assembly (22) comprises a unfolding and restoring mechanism and a central point limiting mechanism (22 g), the unfolding and restoring mechanism controls a pair of semicircular nail anvils (3) which are unfolded towards two outer sides to automatically rotate towards the inner sides, and the central point limiting mechanism (22 g) controls the pair of semicircular nail anvils (3) to rotate around the same circle center;
the nail anvil component (2) is connected with a shearable rope body (4), when the rope body (4) is not sheared and tightened, the nail anvil rod (1) is perpendicular to the semicircular nail anvil (3), the pair of semicircular nail anvils (3) are unfolded towards two outer sides, when the rope body (4) is sheared and loosened, the semicircular nail anvil (3) is restored and kept to be in the same straight line with the nail anvil rod (1) under the action of the first component (21), and the pair of semicircular nail anvils (3) automatically rotate towards the inner side under the combined action of the unfolding restoring mechanism and the central point limiting mechanism (22 g) to be spliced into a complete circle.
2. The foldable stapler anvil block according to claim 1, wherein the unfolding return mechanism comprises a positioning column (22 a), a rotating slot formed at the end of the positioning column (22 a) far away from the first component (21), a limiting block (22 b) fixedly connected to the upper and lower inner walls of the rotating slot and close to the slot opening of the rotating slot, a connecting shaft (22 c) connected between the upper and lower inner walls of the rotating slot and close to the bottom of the rotating slot, and a second torsion spring (22 d) sleeved outside the connecting shaft (22 c), two ends of the second torsion spring (22 d) respectively penetrate through the connecting sheet (31) and are fixedly connected with a limiting piece (22 d 1), and the second torsion spring (22 d) is used for enabling the pair of semi-circular anvil blocks (3) to rotate inwards and close to form a circular shape when no external force is applied.
3. The foldable stapler nail anvil block according to claim 2, wherein an elastic contraction member (22 f) is sleeved at the outer end of the connecting shaft (22 c), when the rope body (4) is not sheared and straightened, the pair of semi-circular nail anvils (3) is unfolded towards two outer sides, the second torsion spring (22 d) contracts towards the center to squeeze the elastic contraction member (22 f) to vertically stretch the elastic contraction member, and when the rope body (4) is sheared and loosened, the elastic contraction member (22 f) returns towards the middle to assist the second torsion spring (22 d) to loosen, so that the pair of semi-circular nail anvils (3) are closed towards the inner side.
4. The foldable stapler anvil block according to claim 3, wherein the elastic contracting member (22 f) comprises an extension spring (22 f 1) sleeved outside the connecting shaft (22 c), and a pair of sliding sleeves (22 f 2) with gradually changing outer diameters respectively connected with two ends of the extension spring (22 f 1), wherein the outer diameter of the sliding sleeve (22 f 2) is gradually increased towards the end far away from the extension spring (22 f 1).
5. The folding stapler anvil according to claim 4, wherein a bellows sleeve (22 f 3) is fixedly connected between a pair of said sliding sleeves (22 f 2), said bellows sleeve (22 f 3) being positioned between the tension spring (22 f 1) and the second torsion spring (22 d).
6. A folding stapler staple anvil according to claim 1, wherein said center point defining means (22 g) comprises roller grooves cut at upper and lower ends of the connecting piece (31), a roller (22 g 1) installed inside said roller grooves, and an arc-shaped rail (22 g 2) cut at upper and lower inner walls of the rotary groove, said roller (22 g 1) being disposed inside the arc-shaped rail (22 g 2) to move along the arc-shaped rail (22 g 2), said arc-shaped rail (22 g 2) being disposed with the connecting shaft (22 c) as a center.
7. The folding stapler staple anvil according to claim 2, wherein the positioning posts (22 a) are arranged in a square configuration.
8. The foldable stapler anvil block according to claim 1, wherein the first component (21) comprises a mounting groove (211) formed at the top end of the anvil rod (1), a rotating shaft (212) rotatably connected between two inner walls of the mounting groove (211), a first torsion spring (213) and a rotating plate (214) having a U-shaped structure respectively sleeved on the outer side of the rotating shaft (212), the rotating plate (214) is fixedly connected with the first component (21), and the first torsion spring (213) is located on the inner side of the rotating plate (214) and is used for automatically returning the anvil rod (1) and the semicircular anvil block (3) to the same linear state from the vertical state.
9. A folding stapler anvil according to claim 1, characterized in that the edges of the ends of the pair of semi-circular anvils (3) close to each other are rounded.
10. The anvil of claim 2, wherein said string (4) comprises a pair of branch strings fixed to a pair of connecting plates (31) for pulling a pair of semi-circular anvils (3) to spread outwardly, said pair of branch strings passing through the positioning post (22 a) and coming out in a string line extending outwardly from the rear end thereof.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010242966.1A CN111407347B (en) | 2020-03-31 | 2020-03-31 | Nail anvil seat of folding anastomat |
| JP2020071929A JP6748989B1 (en) | 2020-03-31 | 2020-04-13 | Folding anastomotic staple anvil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010242966.1A CN111407347B (en) | 2020-03-31 | 2020-03-31 | Nail anvil seat of folding anastomat |
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| Publication Number | Publication Date |
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| CN111407347A CN111407347A (en) | 2020-07-14 |
| CN111407347B true CN111407347B (en) | 2021-03-19 |
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| CN202010242966.1A Active CN111407347B (en) | 2020-03-31 | 2020-03-31 | Nail anvil seat of folding anastomat |
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| JP (1) | JP6748989B1 (en) |
| CN (1) | CN111407347B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117590483B (en) * | 2024-01-18 | 2024-04-26 | 中国人民解放军总医院海南医院 | Detection device for anorectal anastomat |
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- 2020-04-13 JP JP2020071929A patent/JP6748989B1/en not_active Expired - Fee Related
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| CN100475161C (en) * | 2004-03-19 | 2009-04-08 | Tyco医疗健康集团 | Anvil assembly with improved cut ring |
| EP1729651A4 (en) * | 2004-03-19 | 2012-03-14 | Tyco Healthcare | Anvil assembly with improved cut ring |
| EP2042108A2 (en) * | 2007-09-24 | 2009-04-01 | Tyco Healthcare Group LP | Anvil delivery device accessory |
| EP2620105A1 (en) * | 2012-01-26 | 2013-07-31 | Covidien LP | Buttress support design for anvil |
| JP2013215572A (en) * | 2012-04-09 | 2013-10-24 | Covidien Lp | Surgical fastener applying apparatus |
| CN104837416A (en) * | 2012-12-04 | 2015-08-12 | 伊西康内外科公司 | Circular anvil introduction system with alignment feature |
| CN105101890A (en) * | 2013-03-21 | 2015-11-25 | 穆斯塔法·沙恩 | A circular stapler having a foldable anvil |
| CN104207815A (en) * | 2013-05-30 | 2014-12-17 | 瑞奇外科器械(中国)有限公司 | Stapler nail anvil assembly and stapler |
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| EP2873380A1 (en) * | 2013-11-13 | 2015-05-20 | Covidien LP | Anvil assembly and delivery system |
| EP3108820B1 (en) * | 2013-11-13 | 2017-09-13 | Covidien LP | Anvil assembly and delivery system |
| CN104939884A (en) * | 2014-03-31 | 2015-09-30 | 瑞奇外科器械(中国)有限公司 | Surgical instrument and nail anvil thereof |
| EP2959847A2 (en) * | 2014-06-24 | 2015-12-30 | Covidien LP | Anvil assembly delivery systems |
| CN105520763A (en) * | 2014-10-03 | 2016-04-27 | 天津万和医疗器械有限公司 | Staple abutting seat component and tubular anastomat adopting same |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN111407347A (en) | 2020-07-14 |
| JP6748989B1 (en) | 2020-09-02 |
| JP2021159730A (en) | 2021-10-11 |
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