CN211633430U - Jaw opening angle mechanism for endoscope cutting anastomat - Google Patents
Jaw opening angle mechanism for endoscope cutting anastomat Download PDFInfo
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- CN211633430U CN211633430U CN201921479324.2U CN201921479324U CN211633430U CN 211633430 U CN211633430 U CN 211633430U CN 201921479324 U CN201921479324 U CN 201921479324U CN 211633430 U CN211633430 U CN 211633430U
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- jaw
- movable jaw
- push broach
- working position
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- 230000007246 mechanism Effects 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 3
- 230000002265 prevention Effects 0.000 claims description 7
- 230000008569 process Effects 0.000 abstract description 2
- 238000010304 firing Methods 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003872 anastomosis Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
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Abstract
A jaw opening angle mechanism for an endoscopic cutting anastomat is characterized in that the tail end of a movable jaw is rotatably connected relative to a fixed jaw around a pivot so as to enable the movable jaw to have a closed working position and an open working position; the push broach is arranged in a sliding manner relative to the fixed jaw along the length direction of the fixed jaw; the tail end of the movable jaw is provided with a stress part, the push broach is provided with a propping part corresponding to the stress part, and the propping part is positioned at the front side of the stress part; the connecting line of the stress part and the pivot is intersected with the sliding track of the abutting part or the extension line of the stress part and the pivot is intersected with the abutting part to abut against the stress part, the stress part and the abutting part are in rigid contact, the movable jaw can be well limited and supported, the opening angle of the movable jaw can be reset and opened stably, no shake can be kept, and the jaw can be accurately operated in the operation process; compared with the traditional movable jaw which is reset by adopting an elastic piece structure, the problem that an elastic mechanism fails in the prior design does not exist.
Description
Technical Field
The utility model belongs to the field of medical equipment, concretely relates to a flare angle mechanism of keeping silent for chamber mirror cutting anastomat.
Background
The anastomat is used for applying a plurality of stitching nails to physiological tissues of a human body and correspondingly cutting the physiological tissues, and the main working principle is to use titanium nails to perform anastomosis on the tissues, which is similar to a stapler.
The stapler generally includes a front jaw portion including a movable jaw, a stationary jaw, a pusher assembly, and a safety device cooperating with the pusher assembly to prevent secondary firing, wherein a rear end of the movable jaw is pivotally connected to the stationary jaw about a pivot axis to provide the movable jaw with a closed operating position and an open operating position.
The jaw part composed of the movable jaw and the fixed jaw can clamp skin for assembly in a closed state, the jaw recovers to an initial angle in an open state, the reset of the jaw opening angle of the existing endoscopic cutting anastomat is pulled back to an initial position through the push broach assembly to release the movable jaw, and the movable jaw is ejected to the initial angle between the movable jaw and the fixed jaw by using a spring or an elastic sheet and other similar elastic mechanisms.
The elastic mechanism in the design is easy to deform when being pressed, the support of the elastic mechanism on the movable jaw or the fixed jaw is unstable, the opening angle of the movable jaw is easy to shake when being influenced by external force after being reset, and particularly when the opening angle of the movable jaw enters a narrow space in a human body, the shaking can increase the difficulty of controlling the jaw; when the jaw is stressed too much, the force applied to the elastic mechanism by the jaw can cause the elastic mechanism to generate permanent deformation, so that the problem of the reset failure of the opening angle of the movable jaw occurs.
Disclosure of Invention
The utility model aims at providing a jaw opening angle mechanism for endoscope cutting anastomat.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a jaw opening angle mechanism for an endoscopic cutting anastomat comprises a jaw part at the front end and a handle at the rear part; the jaw part comprises a movable jaw, a fixed jaw, a push broach and a safety device for preventing secondary triggering, wherein the safety device is matched with the push broach; the tail end of the movable jaw is rotatably connected with the fixed jaw around a pivot so as to enable the movable jaw to have a closed working position and an open working position; the push broach is arranged in a sliding manner relative to the fixed jaw along the length direction of the fixed jaw;
the tail end of the movable jaw is provided with a stress part;
the push broach is provided with a propping part corresponding to the stress part, and the propping part is positioned at the front side of the stress part; the connecting line of the stress part and the pivot is intersected with the sliding track of the butting part or the extension lines of the stress part and the pivot;
the push broach can move backwards to enable the abutting part to abut against the stressed part so as to enable the movable jaw to rotate around the pivot to be opened, and when the movable jaw completely rotates to the opening working position, the secondary triggering prevention safety device acts on the push broach to position the push broach so as to enable the movable jaw to keep positioned at the opening working position.
In the scheme, the tail end of the movable jaw is provided with a transverse rod, the transverse rod is arranged along the width direction of the movable jaw, and two ends of the transverse rod are fixedly connected with the tail end of the movable jaw; the push broach comprises a push broach and a push broach rod connected with the rear end of the push broach, the rear end of the push broach is provided with the abutting part, the abutting part is positioned between two ends of the cross rod, and the part of the cross rod, which is opposite to the abutting part, is used as the stress part.
In the above scheme, the push rod is provided with a limiting matching surface corresponding to the cross rod for preventing the cross rod from rotating downwards, and the limiting matching surface is arranged corresponding to the opening working position of the movable jaw; when the movable jaw is in the opening working position, the cross rod is abutted against the limiting matching surface, so that the rotation of the movable jaw is limited, and the expansion angle between the movable jaw and the fixed jaw is avoided.
In the above scheme, the jaw part further comprises a connecting piece, the fixed jaw is fixed on the connecting piece, and the movable jaw is hinged on the connecting piece through the pivot; an avoiding groove is formed in the connecting piece corresponding to the stress part, and when the movable jaw rotates to the opening working position, the stress part is pressed into the avoiding groove by the abutting part.
In the above scheme, a sliding groove is formed in the movable jaw corresponding to the movement locus of the push broach, and when the movable jaw is located at the closed working position and the open working position, the push broach can slide in the sliding groove.
The utility model discloses has following effect: according to the jaw opening angle mechanism in the design, the stress part is designed integrally with the movable jaw, after the instrument is fired, the push broach is pulled back to move towards the tail end of the movable jaw, the abutting part on the push broach abuts against the stress part at the tail end of the movable jaw, so that the movable jaw rotates to an initial position around a pivot, and then the push broach is locked and positioned through the locking mechanism to keep the state of the push broach; compared with the traditional movable jaw which is reset by adopting an elastic piece structure, the problem that an elastic mechanism fails in the prior design does not exist.
Drawings
Fig. 1 is a schematic perspective view of a movable jaw of an embodiment of the present invention in a closed working position;
fig. 2 is a cross-sectional view of the movable jaw of an embodiment of the present invention in a closed, working position;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
fig. 4 is a schematic view of a three-dimensional structure of a movable jaw according to an embodiment of the present invention;
fig. 5 is a schematic structural view of the abutting portion acting on the force receiving portion according to the embodiment of the present invention;
FIG. 6 is a partial enlarged view at B in FIG. 5;
fig. 7 is a schematic structural view illustrating the forced portion of the embodiment of the present invention being pressed into the avoiding groove;
FIG. 8 is an enlarged view of a portion of FIG. 7 at C;
fig. 9 is a schematic structural view of a push broach assembly according to an embodiment of the present invention;
fig. 10 is a schematic perspective view of the movable jaw of the embodiment of the present invention in an open working position.
In the above drawings: 1-movable jaw, 11-pivot, 12-stress part, 13-cross rod, 14-sliding groove, 2-fixed jaw, 3-push knife component, 31-abutting part, 32-push knife, 33-push knife rod, 4-connecting piece, 41-avoiding groove, 411-rotation limiting surface and 5-anti-secondary-firing safety device.
Detailed Description
The invention will be further described with reference to the following drawings and examples:
example (b): referring to FIGS. 1-10: a jaw opening angle mechanism for an endoscope cutting anastomat is disclosed, wherein the anastomat comprises a jaw part at the front end, a push broach assembly 3 and a secondary triggering prevention safety device 5 acting on the push broach assembly 3; the jaw part comprises a movable jaw 1 and a fixed jaw 2, the movable jaw 1 comprises a nail bin and a nail bin frame, the nail bin is embedded in the nail bin frame, and the tail end of the movable jaw 1 is rotatably connected with the fixed jaw 2 around a pivot 11 so that the movable jaw 1 has a closed working position and an open working position; the push broach component 3 is arranged in a sliding way along the length direction of the fixed jaw 2;
the tail end of the movable jaw 1 is provided with a stress part 12, specifically, a cross rod 13 can be fixed at the tail end of the nail bin frame in the movable jaw 1, the cross rod 13 is arranged along the width direction of the movable jaw 1, two ends of the cross rod 13 can be integrally formed with the tail end of the movable jaw 1, and the part of the cross rod 13 facing the front side and the abutting part 31 is used as the stress part 12;
the push broach assembly 3 comprises a push broach 32 and a push broach rod 33 connected to the rear end of the push broach 32, the rear end of the push broach 32 is provided with a supporting part 31 corresponding to the stress part 12, and the supporting part 31 is positioned at the front side of the stress part 12; the connecting line of the force-bearing part 12 and the pivot 11 is intersected with the sliding track line of the abutting part 31 or the extension lines of the two are intersected, namely the connecting line of the force-bearing part 12 and the pivot 11 is arranged at a certain included angle with the sliding track line of the abutting part 31;
when the movable jaw 1 starts to restore to the opening angle working position, the push broach component 3 can move backwards by operating the handle in the anastomat body in the prior art, the abutting part 31 on the push broach component 3 moves backwards and abuts against the stressed part 12, because the connecting line of the stressed part 12 and the pivot 11 and the sliding track line of the abutting part 31 are arranged at a certain included angle, the stressed part 12 is stressed to drive the movable jaw 1 to rotate around the pivot 11 integrally, so that the movable jaw 1 rotates around the pivot 11 to open, when the movable jaw 1 completely rotates to the opening working position, the push broach component 3 is positioned by operating the secondary triggering prevention safety device 5 in the prior art and acting on the push broach component 3 through the secondary triggering prevention safety device 5, so that the movable jaw 1 keeps positioned at the opening working position, specifically, the tail end of the push broach rod 33 is provided with a clamping groove, when the secondary triggering prevention safety device 5 is opened, a safety pin of the safety device 5 for preventing secondary triggering is clamped in the clamping groove so as to limit the movement of the push broach component 3;
the jaw part is also provided with a connecting piece 4 corresponding to the tail end of the movable jaw 1, wherein the fixed jaw 2 can be fixed on the connecting piece 4 through a screw, the movable jaw 1 is hinged on the connecting piece 4 through a pivot 11, the connecting piece 4 is provided with an avoiding groove 41 corresponding to the cross rod 13, the avoiding groove 41 is internally provided with a rotation limiting surface 411 corresponding to the cross rod 13 and preventing the cross rod from continuously rotating, the rotation limiting surface 411 can be a surface in the avoiding groove 41 intersected with a rotation track line of the cross rod 13, when the movable jaw 1 is in an opening working position, the cross rod 13 is pressed into the avoiding groove 41 under the action of the abutting part 31 and abuts against the rotation limiting surface 411, at the moment, the cross rod 13 is clamped between the abutting part 31 and the rotation limiting surface 411, all parts are in rigid contact, the movement of the cross rod 13 is limited, so as to lock the movable jaw 1, thereby enabling the movable jaw 1 to keep higher stability, the shaking is difficult to generate during the use process; compared with the traditional movable jaw which is reset by adopting an elastic piece structure, the movable jaw has the advantage that the elastic mechanism fails in the prior design.
The movable jaw 1 is provided with a sliding slot 14 corresponding to the movement trajectory line of the push broach 32, when the movable jaw 1 is located at the closed working position and the open working position, the push broach 32 can slide in the sliding slot 14, and the sliding slot 14 can limit the sliding trajectory of the push broach 32 to avoid deviation.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (5)
1. A jaw opening angle mechanism for an endoscope cutting anastomat comprises a jaw part at the front end, a push broach assembly and a secondary triggering prevention safety device acting on the push broach assembly; the jaw part comprises a movable jaw and a fixed jaw, the movable jaw comprises a nail bin and a nail bin frame, and the tail end of the movable jaw is rotatably connected with the fixed jaw around a pivot so as to enable the movable jaw to have a closed working position and an open working position; the push broach assembly is arranged in a sliding manner relative to the fixed jaw along the length direction of the fixed jaw;
the method is characterized in that: the tail end of the movable jaw is provided with a stress part;
a butting part is arranged on the push broach assembly corresponding to the stress part, and the butting part is positioned on the front side of the stress part; the connecting line of the force-bearing part and the pivot is intersected with the sliding track line of the abutting part or the extension lines of the force-bearing part and the pivot;
the push broach assembly can move backwards to enable the abutting part to abut against the stressed part so as to enable the movable jaw to rotate around the pivot to be opened, and when the movable jaw completely rotates to the opening working position, the secondary triggering prevention safety device acts on the push broach assembly to position the push broach assembly so as to enable the movable jaw to keep positioned at the opening working position.
2. The jaw opening angle mechanism of claim 1, wherein: the tail end of the movable jaw is provided with a transverse rod, the transverse rod is arranged along the width direction of the movable jaw, and the transverse rod is fixedly connected with the tail end of the movable jaw; the push broach assembly comprises a push broach and a push broach rod connected to the rear end of the push broach, the supporting portion is arranged at the rear end of the push broach, and the part, opposite to the supporting portion, of the forward side of the cross rod serves as the stress portion.
3. The jaw opening angle mechanism of claim 2, wherein: the jaw part is also provided with a connecting piece corresponding to the tail end of the movable jaw, the connecting piece is provided with an avoiding groove corresponding to the crossing rod, the avoiding groove is internally provided with a rotating limiting surface for preventing the crossing rod from continuously rotating, and when the movable jaw is in an opening working position, the crossing rod is clamped between the abutting part and the rotating limiting surface so as to lock the movable jaw.
4. The jaw opening angle mechanism of claim 3, wherein: the fixed jaw is fixed on the connecting piece, and the movable jaw is hinged on the connecting piece through the pivot.
5. The jaw opening angle mechanism of claim 1, wherein: the movable jaw is provided with a sliding groove corresponding to the movement track of the push broach, and when the movable jaw is located at a closed working position and an open working position, the push broach can slide in the sliding groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921479324.2U CN211633430U (en) | 2019-09-06 | 2019-09-06 | Jaw opening angle mechanism for endoscope cutting anastomat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921479324.2U CN211633430U (en) | 2019-09-06 | 2019-09-06 | Jaw opening angle mechanism for endoscope cutting anastomat |
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| Publication Number | Publication Date |
|---|---|
| CN211633430U true CN211633430U (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921479324.2U Active CN211633430U (en) | 2019-09-06 | 2019-09-06 | Jaw opening angle mechanism for endoscope cutting anastomat |
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| CN (1) | CN211633430U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112089462A (en) * | 2020-10-13 | 2020-12-18 | 江苏健瑞宝医疗科技股份有限公司 | Cutting knife safety mechanism and intracavity cutting anastomat using same |
| CN112451019A (en) * | 2019-09-06 | 2021-03-09 | 康奇舒宁(苏州)医疗科技有限公司 | Jaw opening angle mechanism for endoscope cutting anastomat |
-
2019
- 2019-09-06 CN CN201921479324.2U patent/CN211633430U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112451019A (en) * | 2019-09-06 | 2021-03-09 | 康奇舒宁(苏州)医疗科技有限公司 | Jaw opening angle mechanism for endoscope cutting anastomat |
| CN112089462A (en) * | 2020-10-13 | 2020-12-18 | 江苏健瑞宝医疗科技股份有限公司 | Cutting knife safety mechanism and intracavity cutting anastomat using same |
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