CN219629697U - Anastomat - Google Patents

Abstract

The utility model relates to an anastomat. The device comprises a sleeve, an anastomotic head, a pushing piece and a handle, wherein the anastomotic head comprises a nail bin and a nail pushing seat, the nail bin comprises a nail bin body, a plurality of anastomotic nails and a nail pushing block, the nail bin body is provided with a plurality of nail cavities and nail pushing grooves, the nail cavities are arranged corresponding to the anastomotic nails and extend along a first direction, the nail pushing grooves comprise a plurality of through grooves which are arranged corresponding to the nail cavities, the through grooves penetrate through the nail bin body and are consistent with the extending direction of the nail cavities, the anastomotic nails are movably arranged in the nail cavities, and the nail pushing block is movably arranged in the nail pushing grooves; the nail propping seat is provided with a nail propping surface parallel to the nail outlet surface, and a gap for accommodating a blood vessel is arranged between the nail propping surface and the nail outlet surface; when the pushing member moves in the first direction, the pushing portion of the pushing member may be inserted into the staple pushing slot and push the staple pusher block into movement so that the staples are pushed out of the staple cavity openings. The anastomat has simple structure, can position the blood vessel along the up-down direction or the adherence, and makes the blood vessel enter the gap between the nail-abutting surface and the nail-discharging surface, thereby facilitating the suturing of the blood vessel.

Description

Anastomat

Technical Field

The utility model relates to an anastomat, in particular to an anastomat for vascular suturing.

Background

The anastomat is a surgical instrument for replacing the traditional manual suture in the surgical operation, has simple operation and reliable suture, and has few side effects and surgical complications. The anastomat mainly comprises a nail bin, a nail pushing seat and a nail pushing rod piece, the working principle of the anastomat is similar to that of a stapler, the nail bin is internally provided with a nail used for suturing, and the nail pushing rod piece in the nail bin of the anastomat pushes out the nail along with the movement of the nail pushing rod piece in operation and is used for suturing an operation part.

At present, the nail bin of most endoscope anastomat is arranged along the horizontal direction, the nail propping seat is connected with the nail bin in a hinging way, the nail propping seat rotates relative to the nail bin to clamp tissues, and then the nail pushing rod piece moves through the firing handle to push out the anastomat, so that the suturing is realized. The stapler of this construction is generally a transverse stapler, which is not conducive to positioning the vessel in an up-down or wall-mounted direction and is not suitable for vascular suturing. Although a small number of anastomat can realize longitudinal suturing, the problem of oversized size caused by complex structure exists, and the anastomat is not suitable for vascular suturing under a cavity mirror. For example, chinese patent CN 115024778A discloses a disposable endoscope linear cutting anastomat, the anastomat head is very complicated, and is affected by processing conditions, etc., so that the actual product size of the anastomat is too large to enter the body through the puncture outfit, and thus is not suitable for vascular suturing.

Disclosure of Invention

The utility model aims to provide an anastomat which is simple in structure and suitable for vascular suturing.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the anastomat comprises a sleeve extending along a first direction, an anastomotic head, a pushing piece and a handle, wherein the pushing piece is arranged on the sleeve, the anastomotic head and the handle are positioned at two ends of the sleeve, the handle is configured to enable the pushing piece to move along the first direction, the anastomotic head comprises a nail bin, the nail bin comprises a nail bin body, a plurality of anastomotic nails and a nail pushing block, the nail bin body is provided with a plurality of nail cavities and nail pushing grooves, the nail cavities are arranged corresponding to the anastomotic nails, the nail cavities extend along the first direction and are provided with nail cavity openings on a nail outlet surface of the nail bin body, the nail pushing grooves comprise a plurality of through grooves, the through grooves penetrate through the nail bin body and are consistent with the extending directions of the corresponding nail cavities, the nail cavities are positioned in the through grooves, the anastomotic nails are movably arranged in the nail cavities, and the nail pushing blocks are movably arranged in the nail grooves and are positioned at the proximal ends of the anastomotic nails;

the nail propping seat is positioned at the distal end of the nail bin body and provided with a nail propping surface parallel to the nail outlet surface, a gap capable of accommodating a blood vessel is arranged between the nail propping surface and the nail outlet surface, and the nail propping seat is configured to enable the nail bin body to be connected with the sleeve;

the pushing member has a pushing portion which is insertable into the staple pushing slot and pushes the staple pusher block into movement as the pushing member moves in a first direction such that the staples have a tendency to move toward the staple abutment surface until being ejected from the staple cavity opening.

According to the utility model, through the arrangement of the nail-abutting surface and the nail-discharging surface, an operator can pick in the blood vessel along the up-down direction or carry out the adherence operation on the blood vessel, so that the blood vessel can be better fixed; the arrangement of the nail bin ensures that when the pushing piece moves along the first direction, the anastomat is pushed out from the opening of the nail cavity under the pushing of the nail pushing block, so that the vascular suturing in the gap between the nail abutting surface and the nail outlet surface is realized. The anastomat is simple in structure and convenient to process, so that smaller size can be realized, the anastomat can conveniently enter a body through a puncture outfit, and the anastomat is used for suturing blood vessels under a endoscope.

Preferably, the nail pushing groove further comprises a pushing groove communicated with the through grooves, the pushing groove is provided with a nail pushing opening on a nail pushing surface of the nail bin body, the nail pushing block is partially positioned in the through groove, the rest part of the nail pushing block is positioned in the pushing groove, and the pushing part can be inserted into the pushing groove through the nail pushing opening to push the nail pushing block to move.

Further preferably, the pushing groove is similar to a square groove, and the pushing part is matched with the pushing groove.

Preferably, the nail pushing block comprises a first nail pushing part, a second nail pushing part and a connecting part, wherein the first nail pushing part and the second nail pushing part are oppositely and alternately arranged, the connecting part is positioned in the pushing groove and can be contacted with the anastomotic nail, and the first nail pushing part and the second nail pushing part are respectively positioned in the through groove and can be contacted with the connecting part.

Further preferably, the first pushing pin portion and the second pushing pin portion each correspond to at least one staple, and the pushing pin block has a plurality of pushing pins sequentially arranged along the second direction.

Further preferably, at least part of the proximal end face of the first ejector pin portion, at least part of the proximal end face of the second ejector pin portion, and at least part of the proximal end face of the connecting portion are located on the same plane, and the lengths of the first ejector pin portion and the second ejector pin portion in the first direction are greater than the lengths of the connecting portion in the first direction.

Preferably, the through grooves are staggered in two rows along the second direction.

Preferably, the diameter of the anastomotic head is not more than 14.6mm.

Preferably, one end of the nail propping seat is provided with a bending part which is bent towards the nail bin body, one end of the nail bin body adjacent to the bending part is provided with an inclined guide surface, and the guide surface and the bending part form a guide area which is beneficial for a blood vessel to enter between the nail propping piece and the nail bin body.

In some embodiments, the curved portion is substantially olecranon-shaped.

Preferably, the nail propping seat comprises a fixing frame and a nail propping piece with the nail propping surface, the fixing frame comprises two connecting frames symmetrically arranged along a first direction, the connecting frames are approximately U-shaped, one end of each connecting frame is inserted into a connecting groove of the nail propping piece and fixedly connected with the nail propping piece, and the other end of each connecting frame is connected to the nail bin body, is at least partially inserted into the connecting groove of the sleeve and is fixedly connected with the sleeve.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

according to the utility model, through the designs of the nail bin, the nail propping seat and the like, the blood vessel can be positioned along the up-down direction or the adherence, so that the blood vessel enters a gap between the nail propping surface and the nail outlet surface, and the fixation and the suture of the blood vessel are convenient; the anastomat is simple in structure and is particularly suitable for vascular suturing.

Drawings

FIG. 1 is a schematic view of a stapler according to the present utility model;

FIG. 2 is a front view of a portion A of a stapler of the present utility model;

FIG. 3 is an exploded view of a portion A of a stapler of the present utility model;

FIG. 4 is a schematic view of the structure of a cartridge body according to the present utility model;

FIG. 5 is a left side view of a cartridge body of the present utility model;

FIG. 6 is a right side view of a cartridge body of the present utility model;

FIG. 7 is a cross-sectional view of a stapler of the present utility model in the B-B direction with the pusher member in an initial state;

FIG. 8 is a cross-sectional view of a stapler of the present utility model in the B-B direction, wherein the pusher is in a pushing state;

FIG. 9 is a schematic view of a nail propping member according to the present utility model;

FIG. 10 is a schematic view of a staple pusher block according to the present utility model;

wherein: 1. an anastomotic head; 11. a staple cartridge body; 111. a staple cavity; 112. a through groove; 113. a propulsion groove; 114. a nail surface is formed; 115. a guide surface; 116. a convex portion; 117. a nail pushing surface; 12. a staple; 13. a nail pushing block; 131. a first nail pushing part; 132. a second nail pushing part; 133. a connection part; 14. a nail propping piece; 141. a bending portion; 142. a nail groove; 143. a connecting groove; 144. a nailing surface; 15. a fixing frame; 151. a connecting frame;

2. a sleeve;

3. a handle;

4. a pushing member; 41. a pushing part.

Detailed Description

The utility model will be further described with reference to examples of embodiments shown in the drawings.

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in numerous different ways without departing from the spirit or scope of the embodiments of the present utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

In describing embodiments of the present utility model, it should be understood that the terms "distal," "proximal," and the like are used to define an orientation or positional relationship in terms of the orientation of the stapler when in use, wherein the side proximal to the operator is the proximal end and the side distal to the operator is the distal end. It is merely for convenience in describing and simplifying the description of embodiments of the present utility model and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the embodiments of the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more, unless explicitly defined otherwise.

In embodiments of the utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, or may include both the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different implementations, or examples, for implementing different configurations of embodiments of the utility model. In order to simplify the disclosure of embodiments of the present utility model, components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit embodiments of the present utility model. Furthermore, embodiments of the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed.

Example 1

An anastomat comprises a sleeve 2, an anastomotic head 1, a pushing piece 4 and a handle 3. Referring to fig. 1 to 3, a pusher 4 is provided in the sleeve 2, and the stapling head 1 and the handle 3 are positioned at both ends of the sleeve 2.

The anastomotic head 1 comprises a nail bin and a nail abutting seat. The diameter of the anastomotic head 1 is not more than 14.6mm, and the anastomotic head 1 can enter a human body through a puncture outfit of 15mm, so that vascular suturing under a endoscope is facilitated.

Referring to fig. 3, the cartridge includes a cartridge body 11, a plurality of staples 12, and a pusher block 13.

Referring to fig. 4 to 6, the cartridge body 11 has a plurality of staple cavities 111 provided corresponding to the staples 12 and staple pushing grooves, the staple cavities 111 extending in a first direction and having a staple cavity opening at a staple ejection face 114 of the cartridge body 11 from which the staples 12 can be pushed out. The staple outlet surface 114 is located at the distal end of the staple cartridge body 11 and is perpendicular to the first direction, which is the far-near direction unless otherwise specified. The shape of the staple cavity 111 matches that of the staples 12 such that the staples 12 are movable only in the direction of extension of the staple cavity 111, the staple cavity 111 preferably having a rectangular parallelepiped configuration. The plurality of pin cavities 111 are staggered in two rows along the second direction, and each row has 2 to 5 pin cavities 111 if not specifically described. In this embodiment, each column has 3 staple cavities 111. The nail pushing grooves comprise a plurality of through grooves 112 which are arranged corresponding to the nail cavities 111, the nail cavities 111 are positioned in the through grooves 112, the through grooves 112 penetrate through the nail bin body 11 and are consistent with the extending direction of the corresponding nail cavities 111, and the plurality of through grooves 112 are also staggered in two rows along the second direction. Further, the pushing slot further comprises a pushing slot 113 communicated with the plurality of through slots 112, the pushing slot 113 is arranged between the two rows of through slots 112 and has a pushing opening on a pushing surface 117 opposite to the staple ejection surface 114, and the pushing member 4 can enter the pushing slot 113 through the pushing opening. The pushing groove 113 is preferably a square groove.

Staples 12 are movably disposed in staple cavities 111 and are generally U-shaped. Staple 12 is commercially available and its dimensions are in accordance with the prior art, and the utility model is not particularly limited.

The pusher 13 is movably disposed in the pusher slot at the proximal end of the staples 12 such that the staples 12 are moved toward the lumen opening by the pushing of the pusher 13. Specifically, referring to fig. 10, the nail pushing block 13 includes a first nail pushing part 131 and a second nail pushing part 132 which are disposed in a staggered manner in opposite directions, and a connecting part 133 therebetween, wherein the first nail pushing part 131 and the second nail pushing part 132 are respectively located in two rows of through grooves 112 and are matched with the through grooves 112, and distal ends of the first nail pushing part 131 and the second nail pushing part 132 have contact surfaces (not shown) which are contacted with the staples 12, and the staples 12 can be pushed to move through the contact surfaces. The connecting portion 133 is located in the pushing groove 113, and the proximal end of the connecting portion 133 has a contact surface that contacts the pusher 4, and when the pusher 4 moves in the first direction and toward the pusher 13, the pusher 4 abuts against the contact surface of the connecting portion 133, so that the pusher 13 has a tendency to move. The proximal end surfaces of the first and second pushing portions 131 and 132 and the proximal end surface of the connecting portion 133 are located on the same plane, and the lengths of the first and second pushing portions 131 and 132 in the first direction are greater than the lengths of the connecting portion 133 in the first direction. The first pushing pin portion 131, the second pushing pin portion 132, and the connecting portion 133 are integrally formed. The first pushing portion 131 and the second pushing portion 132 each correspond to at least one staple 12. Preferably, each of the first pushing portion 131 and the second pushing portion 132 corresponds to one staple 12, and the pushing block 13 has a plurality of pushing blocks sequentially arranged in the second direction. In this embodiment, the number of the push pin blocks 13 is 3.

The nail-propping seat is positioned at the distal end of the nail bin body 11 and is provided with a nail-propping surface 144 parallel to the nail-discharging surface 114, a gap capable of accommodating blood vessels is arranged between the nail-propping surface 144 and the nail-discharging surface 114, the size of the interval can be specifically set according to the blood vessels, and the utility model is not particularly limited. In vascular suturing, an operator can pick up a blood vessel in the up-down direction or perform an adherence operation on the blood vessel so that the blood vessel enters into the gap, thereby better fixing and suturing the blood vessel.

The abutment is configured to connect the cartridge body 11 with the sleeve 2. Further, referring to fig. 9, one end of the staple holder has a curved portion 141 curved toward the cartridge body 11, and preferably the curved portion 141 is substantially olecranon-shaped. The end of cartridge body 11 adjacent to curved portion 141 has an angled guide surface 115, and guide surface 115 and curved portion 141 form a guide region that facilitates the passage of a blood vessel into the gap between staple exiting surface 114 and staple abutment surface 144. The design of the guiding region makes it easier for the blood vessel to enter the gap between the staple ejection face 114 and the staple abutment face 144, facilitating suturing of the blood vessel.

Referring to fig. 3 and 9, the nail-abutting seat specifically includes a fixing frame 15 and a nail-abutting piece 14. The upper end of the nail propping piece 14 is provided with the bending part 141, the nail propping piece 14 is provided with a nail propping surface 144, and a plurality of nail grooves 142 corresponding to the anastomat 12 are arranged on the nail propping surface 144. The fixing frame 15 includes two connecting frames 151 symmetrically arranged along a first direction, the connecting frames 151 are substantially U-shaped, one end of each connecting frame is inserted into a connecting groove 143 of the nail supporting member 14 and fixedly connected with the nail supporting member 14, and the other end of each connecting frame is connected to the nail cartridge body 11 and at least partially inserted into a connecting groove 143 of the sleeve 2 and fixedly connected with the sleeve 2. The means of securing the connection includes, but is not limited to, welding. Further, a plurality of protrusions 116 are provided on the staple pushing surface 117 of the staple cartridge body 11, and a groove capable of accommodating the other end of the connection frame 151 is formed between the protrusions 116 and the staple pushing surface 117, and the other end of the connection frame 151 is inserted into the groove to be connected with the staple cartridge body 11.

The distal end of the pusher member 4 has a pusher portion 41, and the pusher portion 41 is a square block and is fitted into the pusher slot 113. The proximal end of the pusher 4 is connected to the handle 3 in a manner known from the prior art. Referring to fig. 7 and 8, the pusher 4 has an initial state and a pushed state, and when in the initial state, the pushing portion 41 is in contact with the push block 13 and has no pushing force on the push block 13; when in the advanced state, the pushing portion 41 abuts on the ejector pin block 13, so that the ejector pin block 13 has a tendency to move toward the abutment surface 144.

The sleeve 2 extends in a first direction, the sleeve 2 being dimensioned with reference to the sleeve dimensions of prior art endoscopic staplers, the proximal end of which is rotatably connected with the handle 3.

The handle 3 is configured to move the pusher 4 in a first direction, the structure of the handle 3 being referred to the handles of prior art staplers.

The operation mode is as follows:

after the stapling head 1 enters the target position, an operator picks up the blood vessel by using the bending part 141 and the guide surface 115, so that the blood vessel enters a gap between the nail abutting surface 144 and the nail discharging surface 114 along the guide surface 115, and the handle 3 is triggered, so that the pushing piece 4 pushes the nail pushing block 13 along the first direction, the nail pushing block 13 pushes the anastomat 12 to push the anastomat 12 out of the nail cavity opening and insert the blood vessel between the nail abutting surface 144 and the nail discharging surface 114, and the anastomat 12 bends under the action of the nail abutting surface 144, thereby realizing the stapling of the blood vessel.

The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.

Claims (10)

1. An anastomat comprises a sleeve extending along a first direction, an anastomotic head, a pushing piece and a handle, wherein the pushing piece is arranged on the sleeve, the anastomotic head and the handle are positioned at two ends of the sleeve, and the handle is configured to enable the pushing piece to move along the first direction, and the anastomotic head is characterized in that: the anastomotic head comprises a nail bin, the nail bin comprises a nail bin body, a plurality of anastomotic nails and a nail pushing block, the nail bin body is provided with a plurality of nail cavities and nail pushing grooves, the nail cavities are arranged corresponding to the anastomotic nails, the nail cavities extend along a first direction, a nail cavity opening is formed in a nail outlet surface of the nail bin body, the nail pushing grooves comprise a plurality of through grooves which are arranged corresponding to the nail cavities, the through grooves penetrate through the nail bin body and are consistent with the extending directions of the corresponding nail cavities, the nail cavities are positioned in the through grooves, the anastomotic nails are movably arranged in the nail cavities, and the nail pushing block is movably arranged in the nail pushing grooves and is positioned at the proximal end of the anastomotic nails;

the nail propping seat is positioned at the distal end of the nail bin body and provided with a nail propping surface parallel to the nail outlet surface, a gap capable of accommodating a blood vessel is arranged between the nail propping surface and the nail outlet surface, and the nail propping seat is configured to enable the nail bin body to be connected with the sleeve;

the pushing member has a pushing portion which is insertable into the staple pushing slot and pushes the staple pusher block into movement as the pushing member moves in a first direction such that the staples have a tendency to move toward the staple abutment surface until being ejected from the staple cavity opening.

2. The stapler of claim 1, wherein: the nail pushing groove further comprises a pushing groove communicated with the through grooves, the pushing groove is provided with a nail pushing opening on the nail pushing surface of the nail bin body, the nail pushing block is partially positioned in the through groove, the rest part is positioned in the pushing groove, and the pushing part can be inserted into the pushing groove through the nail pushing opening to push the nail pushing block to move.

3. The stapler of claim 2, wherein: the pushing groove is similar to a square groove, and the pushing part is matched with the pushing groove.

4. The stapler of claim 2, wherein: the nail pushing block comprises a first nail pushing part, a second nail pushing part and a connecting part, wherein the first nail pushing part and the second nail pushing part are oppositely and alternately arranged, the connecting part is positioned between the first nail pushing part and the second nail pushing part, the first nail pushing part and the second nail pushing part are respectively positioned in the through groove and can be contacted with the anastomotic nail, and the connecting part is positioned in the pushing groove and can be contacted with the connecting part.

5. The stapler of claim 4, wherein: the first nail pushing part and the second nail pushing part at least correspond to one anastomat, and the nail pushing block is provided with a plurality of nails which are sequentially arranged along the second direction; and/or the number of the groups of groups,

at least part of the proximal end face of the first nail pushing part, at least part of the proximal end face of the second nail pushing part and at least part of the proximal end face of the connecting part are located on the same plane, and the lengths of the first nail pushing part and the second nail pushing part in the first direction are larger than those of the connecting part in the first direction.

6. The stapler of claim 1, wherein: the through grooves are staggered in two rows along the second direction.

7. The stapler of claim 1, wherein: the diameter of the anastomotic head is not more than 14.6mm.

8. The stapler of claim 1, wherein: one end of the nail propping seat is provided with a bending part which is bent towards the nail bin body, one end of the nail bin body adjacent to the bending part is provided with an inclined guide surface, and the guide surface and the bending part form a guide area which is beneficial for a blood vessel to enter between the nail propping surface and the nail outlet surface.

9. The stapler of claim 8, wherein: the curved portion is substantially olecranon-shaped.

10. The stapler of claim 1, wherein: the nail propping seat comprises a fixing frame and nail propping pieces with nail propping surfaces, the fixing frame comprises two connecting frames symmetrically arranged along a first direction, the connecting frames are approximately U-shaped, one ends of the connecting frames are inserted into connecting grooves of the nail propping pieces and fixedly connected with the nail propping pieces, and the other ends of the connecting frames are connected onto the nail bin body, at least part of the connecting frames are inserted into connecting grooves of the sleeve and fixedly connected with the sleeve.