阅读说明：本技术 一种折叠式吻合器钉砧座 (Nail anvil seat of folding anastomat ) 是由 朱阿考 高微 于 2020-03-31 设计创作，主要内容包括：本发明公开了一种折叠式吻合器钉砧座,属于吻合器钉砧座领域,一种折叠式吻合器钉砧座,包括钉砧杆和一对可拼合成完整圆形的半圆钉砧,一对半圆钉砧靠近钉砧杆的一端均固定连接有连接片,在钉砧杆和连接片之间连接有钉砧组件,可以实现通过第一组件便于钉砧杆与半圆钉砧在垂直和水平状态中切换,通过第二组件便于一对半圆钉砧的展开与关闭,有效实现本装置放入食道前横截面的缩小,从而便于其通过狭窄的食道,而在到达指定位置后又能将其回复至工作状态,其中还另设有弹性收缩件辅助快速回复,另外放入状态至工作状态的切换,紧靠切断绳体实现,十分方便快速,大大降低了手术难度,提高手术效率。(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.)

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.

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 construction of the pull cord of the present invention when straightened 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.