CN211094394U

CN211094394U - Cutting knife, nail bin assembly and linear cutting anastomat used under endoscope

Info

Publication number: CN211094394U
Application number: CN201921034498.8U
Authority: CN
Inventors: 乔贵宾; 羌立忠
Original assignee: Changzhou Jiucheng Electronic Equipment Co ltd
Current assignee: Changzhou Jiucheng Electronic Equipment Co ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-07-28
Anticipated expiration: 2029-07-02

Abstract

The utility model discloses a use sharp cutting anastomat under cutting knife, nail storehouse subassembly and the endoscope, including the sword body and the spacing wing group that links to each other with the sword body. One side of the knife body, which extends along the length direction of the nail bin and the nail abutting seat of the cutting anastomat, is provided with a cutting edge for cutting human tissues; the limiting wing group comprises a group of symmetrically arranged wings which are respectively arranged at two ends of the knife body, the two ends are perpendicular to the direction of the knife edge, and the pair of wings are suitable for sliding along the length direction of the nail bin and the nail abutting seat respectively; the pair of wing wings respectively comprise a base fixedly connected with the knife body and a pair of symmetrically arranged wing parts connected with two sides of the base extending along the length direction of the nail bin and the nail abutting seat; and arc-shaped bulges are arranged on the opposite end surfaces of the wing parts respectively included by the pair of wings. The utility model discloses a can effectively improve the smooth and easy degree of cutting knife at the broach groove removal in-process along the nail storehouse and support the nail seat with sharp cutting anastomat under cutting knife, nail storehouse subassembly and the endoscope.

Description

Cutting knife, nail bin assembly and linear cutting anastomat used under endoscope

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a cutting knife, nail storehouse subassembly and endoscope are down with sharp cutting anastomat.

Background

The cutting anastomat is widely applied to various open or endoscopic operations, in the operation, a doctor excites a handle of the anastomat to enable a nail pushing sheet and a cutting knife to move towards the front end, the nail pushing sheet enables suturing nails to be sequentially driven into tissues which are well closed and need to be anastomosed together, the suturing nails penetrate through the tissues and are blocked by nail pushing seats on the opposite sides and are bent inwards to form B shapes which are mutually staggered, and the tissues are permanently nailed together. In the process of suturing the tissues by the suturing nail, the cutting knife is pushed simultaneously, and the cutting knife is matched with the suturing nail to realize the cutting of the tissue side suturing. The cutting knife plays a role in cutting tissues on one hand, and plays a role in locking the relative distance between the upper jaw and the lower jaw of the nail bin assembly of the anastomat on the other hand.

It should be noted that, before the intracavity cutting stapler is used, a doctor is usually required to judge the thickness of a tissue to be cut according to the endoscope to select the stapler with the corresponding staple height, since the endoscope is used for observation, in the actual process, it is difficult to avoid the condition that the stapler is incorrectly selected due to inaccurate judgment of the doctor, the incorrectly selected stapler is mainly embodied in that the staple height is not matched with the thickness of the tissue, in this case, if the staple height of the selected staple cartridge component is too long (the error exceeds 0.15mm) relative to the tissue, the tissue is loose after being sutured, the hemostatic effect is poor, if the staple height of the selected staple cartridge component is too short (the error exceeds 0.15mm), the compression force required by the tissue is too large, the swelling force borne by the cutting knife is too large, the friction force is too large if the lower pressure of the same friction coefficient is too large, and the correspondingly generated problem is that the resistance of the cutting knife is too large in the advancing process, namely, the pushing of the cutting knife is blocked, so that the operation process of the integral tissue suture cutting has the problem of unsmooth operation. In addition, the conditions of different tissues in the human body are different, and particularly after the tissues of part of patients have calcification, the required compression force of the calcified tissues is obviously improved compared with that of non-calcified tissues, and the resistance of the cutting knife in the pushing process is also obviously improved. In addition, because the linear cutting anastomat used under the endoscope is inserted into the human body through the endoscope channel, this procedure is performed in a specific surgical procedure by first making several very small incisions in the patient's body for establishing the endoscopic channels, where during the actual surgical procedure, according to the different positions of the tissues to be cut and sutured, the straight channel of the endoscope channel relative to the tissues to be cut and sutured can not be effectively ensured, and a certain curvature may occur, in which case, during the operation of the cutting stapler through the endoscope channel, it may occur that the cartridge assembly and cutting knife of the cutting stapler need to flex adaptively during use, the adaptive bending may cause the stress of the cutting knife in the process of pushing the cutting knife relative to the nail bin seat of the nail bin assembly to generate deviation, and the deviation correspondingly causes the resistance of the cutting knife with the upper and lower jaw side surfaces in the process of pushing the cutting knife to be greatly increased.

The unsmooth pushing of the cutting knife is very likely to cause the failure of the cutting anastomat in the operation process, so that the normal cutting anastomosis can not be effectively implemented, and the phenomenon of difficult tissue bleeding occurs, so that the original minimally invasive operation under the endoscope is often performed in the operation process, and the large-scale open operation is required to be converted into the bleeding tissue hemostasis operation.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a first purpose provides a cutting knife to solve the technical problem that reduces the resistance that the cutting knife promoted the in-process.

The second purpose of the utility model is to provide a nail storehouse subassembly to solve the technical problem who reduces the cutting knife and promote the resistance of in-process.

The third purpose of the utility model is to provide an endoscope is with sharp cutting anastomat down to solve the technical problem that reduces the cutting knife and promote the resistance of in-process.

The utility model discloses a cutting knife is realized like this:

a cutting burr, comprising:

the side of the knife body, which extends along the length direction of the nail bin and the nail abutting seat of the cutting anastomat, is provided with a cutting edge for cutting human tissues;

the limiting wing set comprises a group of symmetrically arranged wings which are respectively arranged at two ends of the knife body, the two ends of the knife body are perpendicular to the direction of the knife edge, and the pair of wings are suitable for sliding along the length direction of the nail bin and the nail abutting seat respectively; the wing parts comprise base parts fixedly connected with the knife body and a pair of symmetrically arranged wing parts connected with two sides of the base parts extending along the length direction of the nail bin and the nail abutting seat; and arc-shaped bulges are arranged on the opposite end surfaces of the wing parts respectively included by the pair of wings.

In a preferred embodiment of the present invention, the arc-shaped protrusion is an integral structure extending along the length direction of the nail bin and the nail seat.

In a preferred embodiment of the present invention, the arc-shaped protrusion is a plurality of split structures distributed along the length direction of the nail bin and the nail seat at intervals.

In a preferred embodiment of the present invention, the arc-shaped protrusions of the pair of wing portions are symmetrically disposed; and

the arc-shaped bulges of the wing parts respectively included by the pair of wings are symmetrically arranged.

In a preferred embodiment of the present invention, the diameter of the arc-shaped protrusion is perpendicular to the length direction of the nail bin and the nail seat.

The utility model discloses a nail storehouse subassembly realizes like this:

a staple cartridge assembly comprising: the cutting knife is suitable for sliding along the length direction of the occluded nail bin and the occluded nail abutting seat; wherein

The nail bin and the nail pushing seat are respectively provided with a cutter pushing groove suitable for the cutter body of the cutter to pass through along the length direction of the nail bin and the nail pushing seat;

in the process that the cutting knife slides along the push knife grooves of the nail bin and the nail abutting seat, a pair of wings of the cutting knife are suitable for being in contact with two side end faces deviated from the nail bin and the nail abutting seat respectively; and

and arc-shaped grooves suitable for being contacted with the arc-shaped bulges of the wing parts of the pair of wing wings of the cutting knife are respectively arranged on the side end surfaces of the nail bin and the nail abutting seat which are deviated from each other and along the length direction of the push knife groove.

In a preferred embodiment of the present invention, the diameter of the arc-shaped groove is perpendicular to the length direction of the nail bin and the nail abutting seat.

In the preferred embodiment of the present invention, the surfaces of the arc-shaped groove and the arc-shaped protrusion are provided with a plastic lubricating layer.

In a preferred embodiment of the present invention, the curvature of the arc-shaped groove is smaller than the curvature of the arc-shaped protrusion of the wing portion of the cutting blade.

The utility model discloses a use sharp cutting anastomat under endoscope is realized like this:

an endoscopically lower linear cutting stapler, comprising: comprises the nail cartridge component.

By adopting the technical scheme, the utility model discloses following beneficial effect has: the utility model discloses a cutting knife, with sharp cutting anastomat under nail storehouse subassembly and the endoscope, through the arch recess that is equipped with on the side end face that nail storehouse and support nail seat deviate from mutually and the orbit that the protruding cooperation of arc on the cutting knife can spacing cutting knife remove along the broach groove, even at the in-process that the cutting anastomat produced the flexibility along with the endoscope passageway, the cutting knife can not produce the problem of skew removal orbit yet, has avoided because the problem of the increase cutting knife motion resistance that the skew of cutting knife motion orbit brought. Furthermore, the protruding and the nail storehouse of arc on the cutting knife and the cooperation of supporting between the nail seat compare the flat end face of cutting knife among the prior art and the nail storehouse and support the cooperation between the nail seat, the protruding and the nail storehouse of arc and the area of contact who exists between the nail seat is little, the frictional resistance who corresponds is also little, it is corresponding, just also improved the smooth and easy degree of cutting knife promotion in-process, the smooth and easy degree of advancing the in-process at effective improvement cutting knife, can realize improving the efficiency of cutting knife to the human tissue cutting, reach and reduce the percussion dynamics of medical staff hand to the cutting anastomat and improve the comfort level of using, can realize the mesh to the quick cutting of tissue again.

Furthermore, because the curvature of the arc-shaped groove is smaller than the curvature of the arc-shaped protrusion of the wing part of the cutting knife, the arc-shaped groove can limit the movement track of the arc-shaped protrusion, but the arc-shaped protrusion and the arc-shaped groove can not be in full contact, the purpose of reducing the friction resistance by reducing the contact area is also achieved, and correspondingly, the smoothness degree of the cutting knife in the pushing process is also improved.

Drawings

FIG. 1 is a schematic structural view of a linear cutting stapler for an endoscope according to the present invention;

FIG. 2 is a schematic view of a first view angle of a cutting knife of an embodiment of the linear cutting stapler for endoscope according to the present invention;

FIG. 3 is a schematic diagram illustrating a second view angle of a cutting knife of an embodiment of the linear cutting stapler for endoscope according to the present invention;

FIG. 4 is a schematic view of a third view angle of a cutting knife of an embodiment of the linear cutting stapler for endoscope according to the present invention;

FIG. 5 is a schematic view of a cutting knife of another embodiment of the linear cutting stapler for endoscope according to the present invention;

FIG. 6 is a schematic structural view of a nail cartridge of a linear cutting stapler for endoscope according to the present invention;

FIG. 7 is a schematic structural view of a nail pushing seat of the linear cutting stapler for endoscope according to the present invention;

fig. 8 is a schematic view of the linear cutting stapler for endoscope according to the present invention, wherein the arc-shaped protrusion is protruded from the arc-shaped groove under the matching state.

In the figure: the nail box comprises a nail box 1, a nail abutting seat 2, a knife body 100, a knife edge 102, wings 200, a base 201, wing parts 202, arc-shaped protrusions 203, split arc-shaped protrusions 2031, a concave area 2032, a push knife groove 3 and arc-shaped grooves 5.

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.

Example 1:

referring to fig. 2 to 5, the present embodiment provides a cutting knife suitable for cutting a stapler, which specifically includes a knife body 100 and a limiting wing set connected to the knife body 100.

One side of the knife body 100 extending along the length direction of the nail bin 1 and the nail abutting seat 2 of the cutting stapler is provided with a knife edge 102 for cutting human tissues. The limiting wing group comprises a group of symmetrically arranged wings 200 respectively arranged at two ends of the knife body 100 perpendicular to the direction of the knife edge 102, and the pair of wings 200 are suitable for sliding along the length direction of the nail bin 1 and the nail abutting seat 2 respectively; each wing 200 comprises a base 201 fixedly connected with the knife body 100 and a pair of symmetrically arranged wings 202 connected with two sides of the base 201 extending along the length direction of the nail bin 1 and the nail abutting seat 2; and the pair of wings 200 respectively include wing portions 202 having arc-shaped protrusions 203 on opposite end surfaces thereof.

In an alternative embodiment, referring to fig. 4, the arc-shaped protrusion 203 is an integral structure extending along the length direction of the staple cartridge 1 and the staple abutting seat 2. At this time, in the process that the cutting knife moves along the knife pushing groove 3 of the nail bin 1 and the nail pushing seat 2, the side end surface of the integral wing part 202 provided with the arc-shaped bulge 203, which faces the nail bin 1 or the nail pushing seat 2, is completely contacted with the nail bin 1 or the nail pushing seat 2.

In another alternative embodiment, referring to fig. 5, the arc-shaped protrusion 203 is a plurality of split structures distributed at intervals along the length direction of the nail bin 1 and the nail abutting seat 2. Such a split structure allows a plurality of small split curved protrusions 2031 to be formed for the entire curved protrusion 203, and an opposite recessed area 2032 to be formed between every two adjacent split curved protrusions 2031, in such a case, only a plurality of small split curved protrusions 2031 are in contact with the magazine 1 or the staple holder 2 for the side end surface of the entire wing 202 provided with the curved protrusion 203 toward the magazine 1 or the staple holder 2 during the movement of the cutting knife along the knife pushing groove 3 of the magazine 1 and the staple holder 2, and the opposite recessed area 2 formed between every two adjacent split curved protrusions 2031 is not in contact with the magazine 1 or the staple holder 2, which relatively reduces the contact area between the curved protrusion 203 and the magazine 1 or the staple holder 2 compared with the curved protrusion 203 of the entire structure, thus reducing the resistance force of the cutting knife during pushing, the smoothness degree of the cutting knife in the pushing process is also improved.

In consideration of the structural regularity and the convenience of processing and manufacturing, the arc-shaped protrusions 203 of the pair of wing parts 202 are symmetrically arranged; and the arc-shaped protrusions 203 of the wing parts 202 respectively included by the pair of wings 200 are symmetrically arranged, and the symmetrical structure is convenient for development and production of corresponding dies for processing the limiting wing group.

It should be noted that the diameter of the arc-shaped protrusion 203 provided on the wing portion 202 in this embodiment is perpendicular to the length direction of the staple cartridge 1 and the staple abutting seat 2.

Example 2:

referring to fig. 1 to 8, on the basis of the cutting knife of embodiment 1, the present embodiment provides a staple cartridge assembly suitable for cutting a stapler, including: a nail box 1 and a nail abutting seat 2 which are suitable for biting, and a cutting knife which is suitable for sliding along the length direction of the meshed nail box 1 and the nail abutting seat 2 at the same time as the embodiment 1.

For the cutting anastomat conventionally used in the field, a push knife groove 3 suitable for a knife body 100 of a cutting knife to pass through is formed in the nail bin 1 and the nail abutting seat 2 along the length direction of the nail bin 1 and the nail abutting seat 2; the cartridge assembly for cutting the stapler in this embodiment also includes a pusher slot 3 for pushing the cutting knife.

In detail, during the sliding process of the cutting knife along the push knife groove 3 of the nail bin 1 and the nail abutting seat 2, a pair of wings 200 of the cutting knife are suitable for being contacted with two side end surfaces deviating from the nail bin 1 and the nail abutting seat 2 respectively; and arc-shaped grooves 5 which are respectively arranged on the side end surfaces of the nail bin 1 and the nail abutting seat 2 which are separated from each other and along the length direction of the push knife groove 3 and are suitable for being contacted with the arc-shaped bulges 203 of the wing parts 202 of the pair of wings 200 of the cutting knife. In order to match the arc-shaped groove 5 with the arc-shaped protrusion 203 of the cutting knife, the diameter of the arc-shaped groove 5 in the embodiment is perpendicular to the length direction of the nail bin 1 and the nail seat 2. It should be noted that, since the wing portions 202 included in the wing 200 are a pair of wing portions 202 symmetrically disposed on both sides of the knife body 100, and the knife body 100 is pushed along the knife pushing groove 3, the arc-shaped grooves 5 here also include a pair of symmetrically disposed arc-shaped grooves 5 disposed on both sides of the knife pushing groove 3 for the arc-shaped grooves 5 on the magazine 1 and the nail abutting seat 2.

Through the cooperation of the arc-shaped groove 5 arranged on the side end surface of the nail bin 1 and the nail pushing seat 2 deviating from and the arc-shaped protrusion 203 on the cutting knife, the path of the cutting knife moving along the knife pushing groove 3 can be limited, even if the cutting anastomat generates adaptive bending along with an endoscope channel, the cutting knife cannot generate the problem of deviating the moving path, and the problem of increasing the movement resistance of the cutting knife caused by the deviation of the movement path of the cutting knife is avoided.

In addition, in view of further improving the smoothness of the arc-shaped groove 5 and the arc-shaped protrusion 203 during the contact process, the surfaces of the arc-shaped groove 5 and the arc-shaped protrusion 203 of the present embodiment are both provided with a plastic lubricating layer, and the plastic lubricating layer is, for example, but not limited to, a teflon lubricating layer.

It should be further explained that this embodiment also illustrates, the curvature of the arc groove 5 designed in this embodiment is smaller than the curvature of the arc protrusion 203 of the wing portion 202 of the cutting knife, such a structure, make the contact between the arc groove 5 and the arc protrusion 203 not be a complete attaching contact, namely the arc groove 5 can limit the movement track of the arc protrusion 203, prevent the cutting knife from moving the in-process and appearing the skew, but can not make the arc protrusion 203 and the arc groove 5 fully attach to contact again, also reached and reduced the area of contact and reduced frictional resistance's purpose, correspondingly, just improved the smooth and easy degree in the cutting knife promotion process.

Example 3:

referring to fig. 1 to 8, based on the staple cartridge assembly of embodiment 2, the present embodiment provides a linear cutting stapler for endoscope, which includes the staple cartridge assembly of embodiment 2.

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 skilled 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 product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device 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. A cutting knife adapted for cutting a stapler, comprising:

2. The cutting burr of claim 1, wherein the arcuate projections are a unitary structure extending along a length of the staple cartridge and the anvil.

3. The cutting burr of claim 1, wherein the arcuate projections are a plurality of split structures spaced apart along a length of the staple cartridge and the staple holder.

4. The cutting burr of any of claims 2 or 3, wherein the arcuate projections of the pair of wing portions are symmetrically disposed therebetween; and

5. The cutting burr of claim 4, wherein a diameter of the arcuate projections is perpendicular to a length direction of the staple cartridge and the staple holder.

6. A staple cartridge assembly adapted for use with a cutting stapler, comprising: the cutting knife comprises a staple cartridge and a nail abutting seat which are suitable for biting, and the cutting knife according to any one of claims 1-5, which is suitable for sliding along the length direction of the staple cartridge and the nail abutting seat after biting simultaneously; wherein

7. The staple cartridge assembly of claim 6, wherein said arcuate groove has a diameter perpendicular to a length of said staple cartridge and said staple holder.

8. The staple cartridge assembly of claim 6, wherein said arcuate recesses and arcuate projections are provided with a plastic lubricating layer on their surfaces.

9. The staple cartridge assembly of any one of claims 6 to 8, wherein the curvature of said arcuate groove is less than the curvature of the arcuate projections of the wings of said cutting blade.

10. An endoscopically linear cutting stapler comprising the cartridge assembly according to any one of claims 6 to 9.