CN218684547U

CN218684547U - Cutting knife suitable for endoscope anastomat

Info

Publication number: CN218684547U
Application number: CN202123391414.6U
Authority: CN
Inventors: 熊兴新
Original assignee: Targus Medical Devices Jiangsu Co ltd
Current assignee: Targus Medical Devices Jiangsu Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2023-03-24
Anticipated expiration: 2031-12-30

Abstract

The utility model discloses a cutting knife suitable for chamber mirror anastomat, include: the cutter head is of an I-shaped structure; the cutter head comprises an upper cutter seat and a lower cutter seat which are symmetrically arranged, and a blade positioned between the upper cutter seat and the lower cutter seat; wherein a blade edge is formed at one side end of the blade; and strip-shaped injection molding parts are arranged on the opposite end surfaces of the upper tool apron and the lower tool apron and on two sides of the blade respectively. The utility model discloses compromise the manufacturing cost of effective control cutting knife when can reduce the cutting resistance of cutting knife.

Description

Cutting knife suitable for endoscope anastomat

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a cutting knife suitable for chamber mirror anastomat.

Background

Commonly used staplers include a linear stapler and a linear cutting stapler used in open surgery, and an endoscopic stapler used in endoscopic surgery. The nail abutting seat is a medical instrument part used in the suture of the operation wounds, and plays a vital role in the wound recovery of postoperative patients.

Staplers are commonly used in the prior art, wherein the cutting blade is moved forward when the instrument is fired. During movement, the contact surface of the cutting knife face, the nail abutting seat and the contact surface of the nail bin frame are metal surface contact metal surfaces, the friction coefficient is large, the elastic deformation is small, and the cutting resistance is large. In view of the above situation, in some anastomats in the prior art, a roller is arranged on the contact surface between a cutting knife and a nail abutting seat to reduce cutting resistance, and the structure has the following problems that firstly, the structure is complex, and the assembly cost is high; secondly, the material costs are high, so overall the costs are not controllable.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a cutting knife suitable for chamber mirror anastomat to solve the technical problem that reduces the cutting resistance of cutting knife through the structure of simplifying.

The utility model discloses a cutting knife suitable for chamber mirror anastomat realizes like this:

a cutting knife suitable for an endoscopic stapler comprises: the cutter head is of an I-shaped structure;

the cutter head comprises an upper cutter seat and a lower cutter seat which are symmetrically arranged, and a blade positioned between the upper cutter seat and the lower cutter seat; wherein

A blade edge is formed at one side end of the blade; and

and strip-shaped injection molding parts are arranged on the opposite end surfaces of the upper tool apron and the lower tool apron and on two sides of the blade respectively.

The utility model discloses in the optional embodiment, the strip injection molding is suitable for and supports nail seat and the face of nail storehouse frame contact for the arc surface with chamber mirror anastomat.

In the optional embodiment of the utility model, the strip-shaped injection molding is suitable for being the flat end face with the face of supporting nail seat and nail storehouse frame contact of chamber mirror anastomat.

In an alternative embodiment of the present invention, the end surfaces of the upper tool post and the lower tool post, which are away from the blade, are arc surfaces.

The utility model discloses in the optional embodiment, the bar injection molding all bonds with last blade holder and lower blade holder and links firmly.

By adopting the technical scheme, the utility model discloses beneficial effect once has: the utility model discloses a cutting knife suitable for chamber mirror anastomat, through go up blade holder and lower blade holder in opposite directions terminal surface and the bar injection molding that the both sides that are located the blade respectively all were equipped with for during the cutting knife motion, the cutting knife face is the plastic surface contact metal face with the contact surface that supports nail seat contact surface and nail storehouse frame, and area of contact is little, and coefficient of friction is little, and the resistance diminishes. Just the utility model discloses a whole cutting knife's simple structure, material cost and assembly cost all hand over the end, compromise the manufacturing cost of effective control cutting knife when consequently can reduce the cutting resistance of cutting knife.

Drawings

Fig. 1 is a schematic view of a first view angle structure of a cutting knife suitable for a scope stapler of the present invention;

fig. 2 is the utility model discloses a second visual angle structure schematic diagram suitable for cutting knife of chamber mirror anastomat.

In the figure: go up blade holder 1, lower blade holder 2, blade 3, cutting edge 4, bar injection molding 6.

Detailed Description

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.

Referring to fig. 1 and 2, the present embodiment provides a cutting knife suitable for an endoscopic stapler, including: the cutter head is of an I-shaped structure; the cutter head comprises an upper cutter seat 1 and a lower cutter seat 2 which are symmetrically arranged, and a blade 3 positioned between the upper cutter seat 1 and the lower cutter seat 2; wherein a blade edge 4 is formed at one side end of the blade 3; the thickness of the cutting edge 4 is controlled between 0.8 mm and 1.5 mm.

The opposite facing end surfaces of the upper tool apron 1 and the lower tool apron 2 are respectively provided with a strip-shaped injection molding part 6 at two sides of the blade 3. In an optional mode, the strip-shaped injection molding part 6 is fixedly connected with the upper tool apron 1 and the lower tool apron 2 in an adhering mode.

On the basis of the structure, in an optional implementation condition, the surface of the strip-shaped injection molding part 6, which is suitable for being in contact with the nail abutting seat and the nail bin frame of the endoscope anastomat, is a circular arc surface. The contact of the arc surface can reduce the contact area of the strip-shaped injection molding part 6 with the nail abutting seat and the nail bin frame, thereby reducing the friction during contact. Of course, in an alternative implementation, the surface of the strip-shaped injection molding part 6, which is suitable for being in contact with the nail abutting seat and the nail bin frame of the endoscopic stapler, is a flat end surface.

In an alternative implementation, the present embodiment is further coated with a self-lubricating coating on the surface of the strip-shaped injection-molded part 6 adapted to contact the staple abutment and the staple cartridge holder of the endoscopic stapler, wherein the self-lubricating coating may be a lubricant coating such as, but not limited to, the lubricant coating disclosed in CN 104350134B. The self-lubricating coating coated on the surface of the strip-shaped injection molding part 6 can further reduce the friction resistance of the strip-shaped injection molding part 6 in the contact process with the nail abutting seat and the nail bin frame so as to improve the smoothness degree of the cutting knife in the pushing process.

In addition, the end surfaces of the upper tool apron 1 and the lower tool apron 2 departing from the blade 3 are both arc surfaces. Can effectively avoid the damage to the tissues in clinical use.

The above embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, 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, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements 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," and "fixed" are to be construed broadly and may, 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 meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

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 the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the mechanism or element referred to must have a specific position, be constructed and operated in a specific orientation, 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 disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features 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. The utility model provides a cutting knife suitable for chamber mirror anastomat which characterized in that includes: the cutter head is of an I-shaped structure;

the cutter head comprises an upper cutter holder and a lower cutter holder which are symmetrically arranged, and a blade positioned between the upper cutter holder and the lower cutter holder; wherein

A blade edge is formed at one side end of the blade; and

strip-shaped injection molding parts are arranged on the opposite end surfaces of the upper tool apron and the lower tool apron and are respectively positioned on the two sides of the blade;

and a self-lubricating coating is coated on the surface of the strip-shaped injection molding part, which is suitable for being in contact with the nail abutting seat and the nail bin frame of the endoscope anastomat.

2. The cutting knife suitable for use in an endoscopic stapler as claimed in claim 1, wherein the surface of the strip-shaped injection molding part suitable for contacting the staple abutting seat and the staple cartridge holder of the endoscopic stapler is a circular arc surface.

3. The cutting knife suitable for use in an endoscopic stapler according to claim 1, wherein the surface of the strip-shaped injection molding part suitable for contacting the staple abutting seat and the staple cartridge holder of the endoscopic stapler is a flat end surface.

4. A cutting knife suitable for an endoscopic stapler according to claim 2 or 3, wherein the end surfaces of the upper knife holder and the lower knife holder facing away from the knife blade are both arc surfaces.

5. The cutting knife suitable for the endoscopic stapler according to claim 1, wherein the strip-shaped injection molding piece is fixedly bonded with the upper knife holder and the lower knife holder.