CN217408881U - Endoscope anastomat end structure and endoscope anastomat - Google Patents
Endoscope anastomat end structure and endoscope anastomat Download PDFInfo
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- CN217408881U CN217408881U CN202221234891.3U CN202221234891U CN217408881U CN 217408881 U CN217408881 U CN 217408881U CN 202221234891 U CN202221234891 U CN 202221234891U CN 217408881 U CN217408881 U CN 217408881U
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Abstract
The utility model relates to an end structure of an endoscope anastomat, which comprises a first clamping and inosculating unit and a second clamping and inosculating unit; the distal ends of the first side surface, the second side surface and the first outer surface are respectively provided with a first guide surface, a second guide surface and a third guide surface, and the first guide surface, the second guide surface and the third guide surface are converged to form the most distal end of the first clamping and inosculating unit; the first guide surface and the second guide surface are arc-shaped surfaces, the third guide surface is an inclined surface, the curvature of the first guide surface is larger than that of the second guide surface, the proximal end of the first clamping and inosculating unit is of a symmetrical structure, and the first guide surface intersects with the symmetrical surface of the proximal end of the first clamping and inosculating unit. The far end of the clamping unit of the stapler, which is provided with the nail anvil, is arranged at two sides with different curvatures, so that one side surface has larger bending change, and a guide structure is formed by matching the inclined outer surface, thereby being convenient for guiding the clamping anastomosis unit to pass through a narrow gap and realizing the expansion of space.
Description
Technical Field
The utility model relates to a medical instrument especially relates to a chamber mirror anastomat end structure and chamber mirror anastomat.
Background
Endoscopic staplers may typically comprise two elongated jaw members, which are used to grasp or clamp tissue, respectively. The two jaw members are typically configured to secure tissue to be excised between a clamping device, which typically includes structure therein configured to receive a staple cartridge.
The prior art mainly improves the distal end of the end effector by reducing the size or considering the strength design, but the prior end effector is not easy to penetrate into a narrow human tissue gap, for example, when a blood vessel which is not completely stripped is anastomosed, the shape of the distal end of the prior endoscope anastomat is not easy to insert, which causes the difficulty of operation. Therefore, an improved end structure is required to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The technical scheme of the utility model is realized like this:
an end structure of an endoscope anastomat comprises a first clamping and anastomosis unit and a second clamping and anastomosis unit;
the first clamping and inosculating unit and the second clamping and inosculating unit are provided with a first inner surface and a second inner surface which are arranged oppositely; the first inner surface is provided with an anvil block, the second inner surface is provided with a nail bin accommodating part, and the nail bin accommodating part is used for accommodating a nail bin;
the first clamping and anastomosis unit further comprises a first side surface and a second side surface which are adjacent to the first inner surface, and a first outer surface which is arranged opposite to the first inner surface;
the distal ends of the first side surface, the second side surface and the first outer surface are respectively provided with a first guide surface, a second guide surface and a third guide surface, and the first guide surface, the second guide surface and the third guide surface are converged to form the farthest end of the first clamping and inosculating unit;
the first guide surface and the second guide surface are arc-shaped surfaces, the third guide surface is an inclined surface, the curvature of the first guide surface is larger than that of the second guide surface, the proximal end of the first clamping and anastomosing unit is of a symmetrical structure, and the first guide surface intersects with the symmetrical surface of the proximal end of the first clamping and anastomosing unit.
Further, the anvil block comprises two rows of anvil holes, the number of the anvil holes in the two rows is the same, and the distance from the anvil holes in the two rows to the symmetrical plane of the proximal end of the first clamping and anastomosis unit is the same.
Further, the two rows of anvil holes have the same length, and the farthest end of the anvil hole close to the second guide surface is closer to the farthest end of the first clamping and stapling unit than the farthest end of the anvil hole close to the second guide surface.
Further, the first guide surface has a projection arc length on the first inner surface that is greater than a projection arc length on the second guide surface first inner surface.
Further, the first guide surface has a projection onto the first inner surface with a varying angle that is larger than a projection onto the first inner surface of the second guide surface.
Further, the maximum value of the variation angle of the projection of the first guide surface on the first inner surface is greater than 45 ° and equal to or less than 60 °.
Further, the projection of the second guide surface onto the first inner surface varies by an angle of less than 30 °.
In another aspect, there is also provided an endoscopic stapler comprising an endoscopic stapler end structure as described above.
Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
1) the far end of the clamping unit of the anastomat, which is provided with the nail anvil, is arranged at two sides with different curvatures, so that one side surface has larger bending change, and a guide structure is formed by matching the inclined outer surface, thereby being convenient for guiding the clamping anastomosis unit to pass through a narrow gap, such as the blood vessel which is not completely stripped, and simultaneously expanding the space below the blood vessel, so that the nail abutting plate completely enters the blood vessel and then carries out the operation of closing the blood vessel;
2) two rows of structures of the nail anvil holes are arranged to be asymmetrical structures, so that the change of the end parts of the first clamping and matching units is further matched;
3) the proximal ends of the first clamping anastomosis unit and the second clamping anastomosis unit are still provided with symmetrical mechanisms, so that the arrangement and installation of the nail bin are ensured.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an endoscopic stapler according to an embodiment of the application;
FIG. 2 is an enlarged partial view of the end effector of the stapler;
figure 3 is a side view of the first clamping and stapling unit;
FIG. 4 is a schematic perspective view of the first clamping and engaging unit;
fig. 5 is a front view of the first clamping and stapling unit.
Wherein the reference numerals are as follows:
the first clamping and stapling unit 1, a first inner surface 11, an anvil 12, an anvil hole 121, a first side surface 13, a first guide surface 131, a second side surface 14, a second guide surface 141, a first outer surface 15, a third guide surface 151, a second clamping and stapling unit 2, a second inner surface 21, a cartridge accommodating part 22, a cartridge 3, a connecting pipe 4, a handle housing 5 and a handle driving assembly 6.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
In the description of the present application, it is to be understood that the terms "upper", "lower", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application. Wherein proximal refers to the end of the medical device that is closer to the operator and distal refers to the end that is closer to the patient.
Example (b):
in the embodiment, as shown in fig. 1 to 5, an end structure of an endoscopic stapler and an endoscopic stapler comprising the same are disclosed. Wherein, cavity mirror anastomat specifically includes end effector, connecting pipe 4, handle casing 5, execution drive assembly and handle drive assembly 6. The end effector is used for cutting and suturing tissues after entering an endoscopic surgery channel, the end effector is connected with a handle shell 5 through a connecting pipe 4, and a pressing handle of a handle driving assembly 6 can move from a first position at the near end to a second position at the far end so as to drive the end effector to clamp and anastomose.
Specifically, in the embodiment, the end effector is included as an end structure of the endoscopic stapler, and specifically includes a first clamping anastomosis unit 1 and a second clamping anastomosis unit 2, the first clamping anastomosis unit 1 and the connection pipe 5 rotate relatively, the second clamping anastomosis unit 2 and the connection pipe 5 are fixed relatively, and the rotation of the first clamping anastomosis unit 1 can be controlled by pressing the handle driving assembly 6, so as to implement the clamping action, wherein the first clamping anastomosis unit 1 and the second clamping anastomosis unit 2 are provided with a first inner surface 11 and a second inner surface 21 which are arranged opposite to each other; the first inner surface 11 is provided with an anvil 12 and the second inner surface 21 is provided with a cartridge receiving portion 22, the cartridge receiving portion 22 being adapted to receive the cartridge 3.
Before the clamping action is carried out, the first clamping and anastomotic unit 1 and the second clamping and anastomotic unit 2 need to be arranged on two sides of the clamped tissue respectively. When a small space is encountered, for example, when the blood vessel is used for clamping and anastomosing the blood vessel which is not completely stripped, the blood vessel needs to be extended to the lower part, generally, the first clamping anastomosis unit 1 with the nail anvil is thinner than the second clamping anastomosis unit 2 with the nail bin, and therefore, the first clamping anastomosis unit 1 is used as a component extended into the small space.
In this embodiment, in order to better achieve the effect of extending into a narrow space, the first clamping and anastomotic unit 1 further includes a first side surface 13 and a second side surface 14 adjacent to the first inner surface 11, and a first outer surface 15 opposite to the first inner surface 11; the distal ends of the first side surface 13, the second side surface 14 and the first outer surface 15 are respectively provided with a first guide surface 131, a second guide surface 141 and a third guide surface 151, and the first guide surface 131, the second guide surface 141 and the third guide surface 151 are merged to form the farthest end of the first clamping and matching unit 1; the first guide surface 131 and the second guide surface 141 are arc-shaped surfaces, the third guide surface 151 is an inclined surface, the curvature of the first guide surface 131 is greater than that of the second guide surface 141, the proximal end of the first clip coinciding unit 1 is of a symmetrical structure, and the first guide surface 131 intersects the symmetrical surface of the proximal end of the first clip coinciding unit 1. referring to fig. 5 in particular, since the curvature of the first guide surface 131 is greater than that of the second guide surface 141, the degree of bending of the first guide surface 131 is greater than that of the second guide surface 141, the first side surface 13 and the second side surface 14 are parallel to each other at the proximal end, and when they are extended distally to the first guide surface 131 and the second guide surface 141, they are bent inwardly at the same time, and extend distally by the same distance, the first guide surface 131 is greater than the second guide surface 141, and finally, the first guide surface 131 is after the plane passing through the symmetrical surface of the proximal end of the first clip coinciding unit 1, and intersects with the second guide surface 141 at the most distal end of the first clip coinciding unit to form an asymmetrical configuration. And the straight inclined plane of the first outer surface 15 is matched to form a structure which guides and is convenient to extend into a narrow space of tissues, so that the functions of extending and expanding are realized.
The far end of the clamping unit of the anastomat, which is provided with the nail anvil, is arranged at two sides with different curvatures, so that one side surface has larger bending change, and a guide structure is formed by matching the inclined outer surface, thereby being convenient for guiding the clamping anastomosis unit to pass through a narrow gap, such as a blood vessel which is not completely stripped, and simultaneously expanding the space below the blood vessel, so that the nail abutting plate completely enters the blood vessel below to perform the operation of closing the blood vessel.
Further preferably, the anvil 12 comprises two rows of anvil holes 121, the number of the anvil holes 121 in the two rows is the same and the distance from the symmetry plane of the proximal end of the first clamping and stapling unit 1 is the same. The two rows of anvil holes 121 have the same length, and the farthest end of the anvil hole 121 close to the second guide surface 141 is closer to the farthest end of the first clamping and anastomosing unit 1 than the farthest end of the anvil hole 121 close to the second guide surface, and the two rows of anvil holes are asymmetrically arranged, so as to further match the change of the end of the first clamping and anastomosing unit.
Referring specifically to fig. 5, it can be seen from the front view of the first inner surface 11 that the arc length of the first guide surface 131 projected on the first inner surface 11 is larger than that of the second guide surface 141 projected on the first inner surface 11, and the variation angle of the first guide surface 131 projected on the first inner surface 11 is larger than that of the second guide surface 141 projected on the first inner surface 11, so as to form a significant asymmetric structure, which facilitates the guiding and expansion of the tissue.
In the present embodiment, it is preferable that the maximum value of the variation angle of the projection of the first guide surface 131 on the first inner surface 11 is greater than 45 ° and equal to or less than 60 °, that is, the maximum value of the variation of the angle ranges from 45 ° to 60 ° from the proximal end to the distal end of the first guide surface; and the angle of change of the projection of the second guide surface 141 on the first inner surface 11 is less than 30 deg..
Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
1) the far end of the clamping unit of the anastomat, which is provided with the nail anvil, is arranged at two sides with different curvatures, so that one side surface has larger bending change, and a guide structure is formed by matching the inclined outer surface, thereby being convenient for guiding the clamping anastomosis unit to pass through a narrow gap, such as the blood vessel which is not completely stripped, and simultaneously expanding the space below the blood vessel, so that the nail abutting plate completely enters the blood vessel and then carries out the operation of closing the blood vessel;
2) two rows of structures of the nail anvil holes are arranged to be asymmetrical structures, so that the change of the end parts of the first clamping and matching units is further matched;
3) the proximal ends of the first clamping anastomosis unit and the second clamping anastomosis unit are still provided with symmetrical mechanisms, so that the arrangement and installation of the nail bin are ensured.
As described above, the present invention has been explained in full in accordance with the gist of the present invention, but the present invention is not limited to the above-described embodiments and implementation methods, and features of the embodiments may be combined with each other without contradiction. The practitioner of the related art can make various changes and implementations within the scope permitted by the technical idea of the present invention.
Claims (8)
1. An end structure of an endoscopic anastomat is characterized by comprising a first clamping and anastomosis unit (1) and a second clamping and anastomosis unit (2);
the first clamping and inosculating unit (1) and the second clamping and inosculating unit (2) are provided with a first inner surface (11) and a second inner surface (21) which are arranged oppositely; the first inner surface (11) is provided with an anvil (12), the second inner surface (21) is provided with a nail box containing part (22), and the nail box containing part (22) is used for arranging a nail box (3);
the first clamping and anastomosing unit (1) further comprises a first lateral surface (13) and a second lateral surface (14) contiguous to the first inner surface (11), and a first outer surface (15) arranged opposite the first inner surface (11);
the distal ends of the first side surface (13), the second side surface (14) and the first outer surface (15) are respectively provided with a first guide surface (131), a second guide surface (141) and a third guide surface (151), and the first guide surface (131), the second guide surface (141) and the third guide surface (151) are converged to form the farthest end of the first clamping and inosculating unit (1);
the first guide surface (131) and the second guide surface (141) are arc-shaped surfaces, the third guide surface (151) is an inclined surface, the curvature of the first guide surface (131) is larger than that of the second guide surface (141), the proximal end of the first clamping and matching unit (1) is of a symmetrical structure, and the first guide surface (131) and the symmetrical surface of the proximal end of the first clamping and matching unit (1) are intersected.
2. An end structure of endoscopic stapler according to claim 1, wherein said anvil (12) comprises two rows of anvil holes (121), the number of holes of two rows of said anvil holes (121) being the same and the distance from the symmetry plane of the proximal end of said first clamping stapling unit (1) being the same.
3. An end structure of endoscopic stapler according to claim 2, characterized in that the two rows of said anvil holes (121) are of the same length and the most distal end of the anvil holes (121) close to said second guiding surface (141) is closer to the most distal end of said first clamp stapling unit (1) than the most distal end of the anvil holes (121) close to said second guiding surface.
4. An endoscopic stapler end structure according to claim 1, wherein said first guide surface (131) projects on the first inner surface (11) an arc length greater than the arc length projected on the first inner surface (11) of said second guide surface (141).
5. An end structure of an endoscopic stapler according to claim 4, wherein the variation angle of the projection of said first guiding surface (131) on the first inner surface (11) is greater than the variation angle of the projection of said second guiding surface (141) on the first inner surface (11).
6. An end structure according to claim 5, characterised in that the first guide surface (131) has a maximum variation angle greater than 45 ° and equal to or less than 60 ° projected on the first inner surface (11).
7. An end structure of an endoscopic stapler according to claim 6, characterized in that said second guide surface (141) has a projection on said first inner surface (11) varying by an angle smaller than 30 °.
8. Endoscopic stapler characterized in that it comprises an endoscopic stapler end structure according to any of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221234891.3U CN217408881U (en) | 2022-05-23 | 2022-05-23 | Endoscope anastomat end structure and endoscope anastomat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221234891.3U CN217408881U (en) | 2022-05-23 | 2022-05-23 | Endoscope anastomat end structure and endoscope anastomat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217408881U true CN217408881U (en) | 2022-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221234891.3U Active CN217408881U (en) | 2022-05-23 | 2022-05-23 | Endoscope anastomat end structure and endoscope anastomat |
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| Country | Link |
|---|---|
| CN (1) | CN217408881U (en) |
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- 2022-05-23 CN CN202221234891.3U patent/CN217408881U/en active Active
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