CN215384299U

CN215384299U - Executing forceps head mechanism and intracavity cutting anastomat using executing forceps head mechanism

Info

Publication number: CN215384299U
Application number: CN202023284806.8U
Authority: CN
Inventors: 李子; 郭红斌
Original assignee: Anhui Maijien Medical Technology Co ltd
Current assignee: Anhui Maijien Medical Technology Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2022-01-04
Anticipated expiration: 2030-12-30

Abstract

The utility model relates to an executing forceps head mechanism and an intracavity cutting anastomat using the executing forceps head mechanism, which comprise a nail bin component, a nail anvil matched with the nail bin component and push cutter grooves correspondingly arranged on the nail bin component and the nail anvil respectively; the nail anvil comprises a base body which is suitable for abutting against the suturing nail arranged in the nail bin assembly, and a pair of side wings which are symmetrically arranged on two sides of the base body in the length direction; the pair of side wings are symmetrically provided with an assembling groove and an arc-shaped guide groove; the nail bin assembly comprises a nail bin frame and a nail bin arranged on the nail bin frame, and push cutter grooves are correspondingly formed in the nail bin frame and the nail bin; the nail bin frame comprises a base part provided with a push knife groove, and a pair of flap parts which are positioned on two sides of the length direction of the base part and bent and formed towards one side of the nail bin, wherein the outer side walls of the pair of flap parts, which are deviated from the nail bin, are provided with guide columns which are suitable for moving along arc-shaped guide grooves. The utility model can improve the comfort degree of the anastomat in the assembling and using processes.

Description

Executing forceps head mechanism and intracavity cutting anastomat using executing forceps head mechanism

Technical Field

The utility model relates to the technical field of medical instruments, in particular to an executing forceps head mechanism and an intracavity cutting anastomat using the executing forceps head mechanism.

Background

The intracavity cutting anastomat is an instrument commonly used in minimally invasive surgery, and the conventional anastomat comprises a cutting knife structure, and the cutting knife structure needs to move along a knife groove of a nail bin frame in the process of cutting human tissues by the cutting knife. The nail bin and the nail anvil of the intracavity cutting anastomat are connected to form a clamp structure, in an operation, a puncture outfit with a fixed opening aperture is required to reach the position of a physiological tissue, then the preset position is reached, the jaw of the clamp formed by the nail bin and the nail anvil can be opened to clamp the physiological tissue, and then the jaw is closed to carry out suturing and cutting. The executing forceps head mechanism used in the prior art has a complex matching structure between the nail bin component and the nail anvil component, so that time and labor are consumed during assembly.

In addition, for example, the utility model is CN203220413U discloses disposable intracavity cutting anastomat's cutting knife, last blade holder and lower blade holder that this cutting knife includes, when the cutting knife along the in-process that the sword groove removed, it is sliding friction to go up blade holder and lower blade holder and form respectively between the sword groove, though last blade holder and the lower blade holder in this patent of disclosing are moulded plastics with the terminal surface that the sword groove contacted respectively and are formed with the plastics lubricant film, but in holistic use, sliding friction still is difficult to avoid can have because sliding friction and the smooth degree of promotion that exists is not enough, cause medical personnel to use not laborsaving problem, medical personnel's comfort level in the use has been reduced promptly.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an executing clamp head mechanism, which aims to solve the technical problem of improving the assembly convenience between a nail bin assembly and a nail anvil assembly of the executing clamp head mechanism.

The second purpose of the utility model is to provide an intracavity cutting anastomat, which aims to solve the technical problem of improving the comfort degree of the anastomat in the assembling and using processes.

The execution binding clip mechanism of the utility model is realized as follows:

an implement jawarm mechanism comprising: the nail bin assembly, the nail anvil matched with the nail bin assembly and the push knife grooves correspondingly arranged on the nail bin assembly and the nail anvil respectively;

the nail anvil comprises a base body which is suitable for abutting against a suturing nail arranged in the nail bin assembly, and a pair of side wings which are symmetrically arranged on two sides of the base body in the length direction; an assembly groove and an arc-shaped guide groove are symmetrically arranged on the pair of side wings; and

the nail bin assembly comprises a nail bin frame and a nail bin arranged on the nail bin frame, and the nail bin frame and the nail bin are correspondingly provided with the cutter pushing grooves;

the nail bin frame comprises a base part provided with the push knife groove, and a pair of flap parts which are positioned on two sides of the length direction of the base part and bent and formed towards one side of the nail bin, wherein guide columns suitable for moving along arc-shaped guide grooves are arranged on the outer side walls of the pair of flap parts departing from the nail bin.

In a preferred embodiment of the utility model, the assembling grooves comprise inclined grooves which are obliquely distributed relative to the knife pushing grooves on the anvil and transition grooves which are communicated with the inclined grooves and are distributed in parallel relative to the knife pushing grooves on the anvil;

an opening at one end of the inclined groove far away from the transition groove is formed in the edge of the base body far away from the side wing;

one end of the transition groove, which is far away from the inclined groove, is also communicated with the arc-shaped guide groove; and

the arc-shaped guide groove is of an L-shaped bending structure relative to the transition groove.

In a preferred embodiment of the utility model, the arc-shaped guide groove is bent relative to the transition groove toward the side of the edge of the base body away from the side wing.

In a preferred embodiment of the utility model, at least two hollow limiting grooves are respectively arranged on a pair of flap parts of the nail bin frame; and

and the two outer side surfaces of the nail bin, which are deviated from the push knife groove, are respectively provided with a protruding block which is suitable for being clamped with the limiting groove in a protruding mode.

The intracavity cutting anastomat is realized by the following steps:

an endoluminal cutting stapler comprising: the execution tong head mechanism and the cutting knife are suitable for moving along the push knife groove.

In a preferred embodiment of the present invention, the cutting blade includes: the cutter comprises a blade, an upper cutter holder arranged at the top of the blade and a lower cutter holder arranged at the bottom of the blade; wherein

At least one roller suitable for rotating is respectively arranged on the upper tool apron and the lower tool apron.

In a preferred embodiment of the present invention, the upper tool apron and the lower tool apron are symmetrically arranged; and

at least one roller respectively arranged on the upper cutter seat and the lower cutter seat is also in a symmetrical structure.

In a preferred embodiment of the present invention, each of the upper tool apron and the lower tool apron includes a frame body fixedly connected to the blade, and two strip-shaped hollow grooves formed in the frame body by being separated by a cross beam;

and respectively assembling rollers in the two strip-shaped hollow grooves.

In the preferred embodiment of the utility model, three rollers are arranged in each strip-shaped hollow groove; gaps exist between every two adjacent rollers in the three rollers positioned in each strip-shaped hollow groove; and

the roller is connected with the strip-shaped hollow groove through the rotating shaft.

In a preferred embodiment of the utility model, the outer surface of the roller is coated with a self-lubricating coating.

Compared with the prior art, the embodiment of the utility model has the following beneficial effects: according to the executing forceps head mechanism and the intracavity cutting anastomat using the executing forceps head mechanism, the nail bin assembly and the nail anvil are assembled through the matching of the guide post included by the nail bin assembly and the assembling groove and the arc-shaped guide groove of the nail anvil, so that the convenience of assembling the nail bin assembly and the nail anvil is improved.

In addition, the cutter adopted by the intracavity cutting anastomat comprises an upper cutter seat and a lower cutter seat which are respectively provided with at least one roller suitable for rotating, so that rolling friction with the cutter pushing groove can be formed through the rollers in the process that the cutter moves along the cutter pushing groove of the intracavity cutting anastomat, and the rolling friction can effectively reduce the friction resistance compared with the sliding friction, thereby improving the smoothness of the cutter in the pushing process.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic structural diagram of an execution forceps head mechanism provided in embodiment 1 of the present invention from a first view;

fig. 2 is a schematic structural diagram of an execution forcep head mechanism provided in embodiment 1 of the present invention at a second view angle;

fig. 3 is a schematic structural diagram of an execution forcep head mechanism provided in embodiment 1 of the present invention from a third view;

fig. 4 is a schematic structural diagram of a cutting knife of the intracavity cutting anastomat provided by the embodiment 2 of the utility model.

In the figure: the cutting device comprises a blade 1, an upper tool apron 2, a lower tool apron 3, a roller 5, a frame body 6, a strip-shaped hollowed-out groove 7, a cross beam 8, a rotating shaft 9, a push broach groove 11, a base body 101, a side wing 102, an inclined groove 105, a transition groove 106, an arc-shaped guide groove 107, a nail bin 201, a base 202, a flap part 204, a guide column 205, a limiting groove 207 and a convex block 208.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

Example 1:

referring to fig. 1 to 3, the present embodiment provides an execution bit mechanism including: the nail bin component, the nail anvil matched with the nail bin component and the knife pushing grooves correspondingly arranged on the nail bin component and the nail anvil respectively.

In detail, the nail anvil comprises a base 101 adapted to abut against the suturing nails arranged in the nail cartridge assembly, and a pair of side wings 102 symmetrically arranged on two sides of the base 101 in the length direction; a fitting groove and an arc-shaped guide groove 107 are symmetrically provided on the pair of side wings 102.

The nail bin assembly comprises a nail bin frame and a nail bin 201 arranged on the nail bin frame, and push cutter grooves are correspondingly formed in the nail bin frame and the nail bin 201; the magazine rack comprises a base 202 provided with a pusher slot, and a pair of flaps 204 which are positioned at two sides of the length direction of the base 202 and bent towards one side of the nail anvil, wherein guide columns 205 suitable for moving along the arc-shaped guide grooves 107 are arranged on the outer side walls of the flaps 204 departing from the magazine 201. It should be noted that, when the assembly between the cartridge rack and the anvil of the cartridge assembly is realized, the guide post 205 herein passes through the assembly slot and then enters the arc-shaped guide slot 107.

Specifically describing an alternative embodiment with reference to the attached drawings, the assembly groove comprises an inclined groove 105 which is obliquely distributed relative to a push groove on the anvil, and a transition groove 106 which is communicated with the inclined groove 105 and is distributed in parallel relative to the push groove on the anvil; one end of the inclined groove 105 far away from the transition groove 106 is opened on the edge of the base body 101 far away from the side wing 102; one end of the transition groove 106 far away from the inclined groove 105 is also communicated with an arc-shaped guide groove 107; and the arc-shaped guide groove 107 is in an L-shaped bent structure relative to the transition groove 106. It should be noted that the arc-shaped guide slot 107 is bent towards one side of the edge of the base 101, away from the side wing 102, of the transition slot 106, so that in the process of assembling the cartridge frame with the anvil, a certain external force is required to sequentially assemble the guide post 205 into the arc-shaped guide slot 107 along the inclined slot 105 and the transition slot 106, and in the process of opening and closing the cartridge assembly relative to the anvil, the guide post 205 can only move along the arc-shaped guide slot 107 without being separated from the arc-shaped guide slot 107, that is, the effective clamping relationship between the anvil and the cartridge assembly is always maintained in the process of using the forceps head mechanism.

For the assembly between the cartridge carrier and the staple cartridge 201: at least two hollow limiting grooves 207 are respectively arranged on the pair of flap parts 204 of the nail bin frame; and two outer side surfaces of the nail bin 201 departing from the push knife groove are respectively provided with a protruding block 208 which is suitable for being clamped with the limiting groove 207 in a protruding mode. The convex block 208 and the limiting groove 207 are matched, so that the nail bin 201 and the nail bin frame can be fixed in the direction perpendicular to the push broach groove, and the positioning effect of the nail bin 201 and the nail bin frame during assembling can be achieved.

In summary, for the executing forceps head mechanism of the present embodiment, the staple cartridge frame and the staple cartridge 201 included in the staple cartridge assembly are conveniently assembled by the connection of the limiting groove 207 and the protruding block 208; and the assembly convenience between the nail bin frame and the nail anvil of the nail bin assembly is realized through the matching of the guide column 205, the assembly groove and the arc-shaped guide groove 107.

Example 2:

referring to fig. 1 to 4, on the basis of the cutting knife of embodiment 1, the present embodiment provides an intraluminal cutting stapler, including: the executive forcep head mechanism of embodiment 1, and a cutting knife adapted to move along the pusher groove 11.

The cutting knife of this embodiment includes: the cutting tool comprises a blade 1, an upper tool apron 2 arranged at the top of the blade 1 and a lower tool apron 3 arranged at the bottom of the blade 1; wherein the blade 1 is formed with a knife edge structure.

For the upper tool apron 2 and the lower tool apron 3 of the present embodiment, at least one roller 5 adapted to rotate is provided on the upper tool apron 2 and the lower tool apron 3, respectively. The significance of the roller 5 in the present embodiment is that the roller 5 can form a rolling friction fit between the cutting knife and the cutting knife slot 11 of the intracavity cutting anastomat, and therefore, for the purpose of this design, the circumferential side wall of the roller 5 of the present embodiment partially protrudes from the side end faces of the upper knife holder 2 and the lower knife holder 3 facing the blade 1, so that the upper knife holder 2 and the lower knife holder 3 can not directly generate a rolling friction fit relationship with the cutting knife slot 11. The rolling friction can effectively reduce the friction resistance compared with the sliding friction, thereby improving the smoothness of the cutting knife in the pushing process,

in addition to the above structure, in an alternative implementation, the present embodiment further coats the self-lubricating coating on the outer surface of the roller 5, and the self-lubricating coating may be, for example and without limitation, a lubricant coating disclosed in the publication No. CN 104350134B. The friction resistance in the contact process of the roller 5 and the cutter grooves 11 can be further reduced through the self-lubricating coating coated on the surface of the roller 5, so that the smoothness in the pushing process of the cutter is improved.

The structure of the roller 5 of the present embodiment is further described in an optional case with reference to the accompanying drawings:

the upper tool apron 2 and the lower tool apron 3 are symmetrically arranged; and at least one roller 5 respectively arranged on the upper tool apron 2 and the lower tool apron 3 is also in a symmetrical structure, and the symmetrical structure is convenient for processing and production.

Still further, the upper tool apron 2 and the lower tool apron 3 of the present embodiment each include a frame body 6 fixedly connected to the blade 1, and two strip-shaped hollowed-out grooves 7 formed in the frame body 6 by being separated by a cross beam 8; the roller 5 is assembled in the strip-shaped hollow groove. This embodiment is through two bar fretwork grooves 7 that set up to assemble gyro wheel 5 respectively in two bar fretwork grooves 7, such setting can the one-to-one two groove lateral walls of the cutting sword groove 11 of cutting anastomat, thereby ensures all to form effectual rolling friction fit relation between two groove lateral walls of holistic cutting knife and cutting sword groove 11. In an alternative embodiment, the rollers 5 respectively located in the two strip-shaped hollow grooves are symmetrically distributed. In another alternative embodiment, the rollers 5 respectively located in the two strip-shaped hollow grooves are in a staggered distribution structure.

Finally, in combination with an optional implementation case, three rollers 5 are arranged in each strip-shaped hollow groove; and a gap is formed between every two adjacent rollers 5 in the three rollers 5 positioned in each strip-shaped hollow groove; and (c) and (d). The roller 5 is matched and connected with the strip-shaped hollow groove through a rotating shaft 9. Of course, other numbers of rollers 5 may be disposed in each strip-shaped hollow groove, and the figure of this embodiment only exemplifies the case of three rollers 5.

In view of further improving the smoothness of the tool pushing groove 11 in the process of matching with the upper tool apron 2 and the lower tool apron 3, in an alternative embodiment, the surface of the tool pushing groove 11 facing the upper tool apron 2 and the lower tool apron 3 is coated with a self-lubricating coating. The self-lubricating coating here may be the same as or different from the self-lubricating coating applied to the surfaces of the upper tool holder 2 and the lower tool holder 3 facing the tool pushing groove 11, respectively, and this embodiment is not absolutely limited.

The above embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above embodiments are only examples of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers 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," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the present invention, unless otherwise expressly stated or limited, the first feature may be present on or under the second feature in direct contact with the first and second feature, or may be present in the first and second feature not in direct contact but in contact with another feature between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.

Claims

1. An implement jawarm mechanism, comprising: the nail bin assembly, the nail anvil matched with the nail bin assembly and the push knife grooves correspondingly arranged on the nail bin assembly and the nail anvil respectively;

the nail bin frame comprises a base part provided with the push knife groove, and a pair of flap parts which are positioned on two sides of the length direction of the base part and bent and formed towards one side of the nail bin, wherein guide columns suitable for moving along arc-shaped guide grooves are arranged on the outer side walls of the pair of flap parts departing from the nail bin;

the assembling groove comprises an inclined groove which is obliquely distributed relative to the knife pushing groove on the nail anvil and a transition groove which is communicated with the inclined groove and is distributed in parallel relative to the knife pushing groove on the nail anvil;

2. The actuator bit mechanism as claimed in claim 1, wherein the arc-shaped guide groove is bent toward the side of the edge of the base body, which is away from the side wing, with respect to the transition groove.

3. The forceps head mechanism of claim 1, wherein at least two hollowed-out retaining grooves are formed in each of the pair of flaps of the magazine holder; and

4. An endoluminal cutting stapler, comprising: an implement jaw mechanism as claimed in any one of claims 1 to 3, and a cutting blade adapted to move along said blade slot.

5. The endoluminal cutting stapler of claim 4, wherein said cutting knife comprises: the cutter comprises a blade, an upper cutter holder arranged at the top of the blade and a lower cutter holder arranged at the bottom of the blade; wherein

6. The endoluminal cutting stapler according to claim 5, wherein the upper knife holder and the lower knife holder are symmetrically arranged; and

7. The endoluminal cutting stapler according to claim 5, wherein each of the upper knife holder and the lower knife holder comprises a holder body fixedly connected with the blade, and two strip-shaped hollowed-out grooves formed in the holder body by a beam in a separating manner;

and respectively assembling rollers in the two strip-shaped hollow grooves.

8. The endoluminal cutting stapler according to claim 7, wherein three rollers are provided in each strip-shaped hollowed-out slot; gaps exist between every two adjacent rollers in the three rollers positioned in each strip-shaped hollow groove; and

9. The endoluminal cutting stapler according to any one of claims 5 to 8, wherein the outer surface of the roller is coated with a self-lubricating coating.