CN108938031B - Head adjusting mechanism of intra-cavity cutting anastomat - Google Patents
Head adjusting mechanism of intra-cavity cutting anastomat Download PDFInfo
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- CN108938031B CN108938031B CN201810857471.2A CN201810857471A CN108938031B CN 108938031 B CN108938031 B CN 108938031B CN 201810857471 A CN201810857471 A CN 201810857471A CN 108938031 B CN108938031 B CN 108938031B
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- locking block
- locking
- lock cylinder
- rack
- base
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B17/115—Staplers for performing anastomosis in a single operation
- A61B17/1155—Circular staplers comprising a plurality of staples
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3209—Incision instruments
Abstract
The invention discloses a head adjusting mechanism of an intra-cavity incision anastomat, which comprises a locking block and a locking rack which are suitable for meshing locking, and a driving unit which is suitable for driving the locking block to mesh and separate relative to the locking rack. The end surface of the locking block, which is suitable for being meshed with the locking rack, is provided with a serrated surface; the bottom end surface of the locking rack is integrally connected with a swing head pull piece; the driving unit comprises a lock cylinder and a driving assembly, wherein a part of the lock cylinder is connected with the locking block in a sliding way and is suitable for driving the locking block to transversely move relative to the locking rack, and the driving assembly is connected with the lock cylinder and is suitable for driving the lock cylinder to longitudinally move relative to the locking block; namely, when the lock cylinder longitudinally moves downwards relative to the locking block, the locking block is gradually separated relative to the locking rack; and when the lock cylinder moves longitudinally upwards relative to the locking block, the locking block is gradually meshed relative to the locking rack.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a head adjusting mechanism of an intra-cavity cutting anastomat.
Background
In the use process of intra-cavity cutting anastomat used in minimally invasive surgery, a turning head control structure is often required to adjust the turning direction of the anastomat so that the cutting anastomat can accurately position human tissues to be anastomosed so as to facilitate clamping and then cutting. In the above process, the design of the turning control structure needs to consider the manual operation, and in the manual operation process, the design is convenient for the single-hand operation control to release the other hand to carry out other operation procedures, so that the use requirement of the actual minimally invasive surgery is more met.
Disclosure of Invention
The invention aims to provide a head adjusting mechanism of an intra-cavity cutting anastomat, which aims to solve the technical problem of facilitating single-hand control operation and turning control.
The head adjusting mechanism of the intra-cavity cutting anastomat is realized by the following steps:
a head adjustment mechanism for an endoluminal cutting stapler, comprising: a locking block and a locking rack which are suitable for being engaged and locked, and a driving unit which is suitable for driving the locking block to be engaged and separated relative to the locking rack; wherein the method comprises the steps of
The end surface of the locking block, which is suitable for being meshed with the locking rack, is provided with a serrated surface;
the bottom end surface of the locking rack is integrally connected with a swing head pull piece; and
the driving unit comprises a lock cylinder and a driving assembly, wherein a part of the lock cylinder is connected with the locking block in a sliding way and is suitable for driving the locking block to transversely move relative to the locking rack, and the driving assembly is connected with the lock cylinder and is suitable for driving the lock cylinder to longitudinally move relative to the locking block; i.e.
When the lock cylinder longitudinally moves downwards relative to the locking block, the locking block is gradually separated relative to the locking rack; while
When the lock cylinder moves longitudinally upward relative to the lock block, the lock block is gradually engaged relative to the lock rack.
In a preferred embodiment of the present invention, the locking block is provided with a through groove perpendicular to the swing pull piece, and a groove wall of a far serrated surface of the through groove is provided with an inclined surface; the size of the notch at the bottom end of the through groove corresponding to the inclined surface is smaller than that of the notch at the top end of the through groove corresponding to the inclined surface;
the end face of the part of the lock cylinder, which is in sliding connection with the locking block, comprises an inclined end which is suitable for being matched with the inclined surface of the locking block;
a rectangular groove parallel to the locking rack is arranged on the swing head pull piece and opposite to the through groove; the rectangular groove is suitable for the lock cylinder to pass through; and a gap is reserved between the locking block and the swing head pull piece.
In a preferred embodiment of the present invention, the length of the serrated surface of the locking rack is greater than the length of the serrated surface of the locking block.
In the preferred embodiment of the invention, the lock further comprises a cap fixedly connected with the top end part of the lock cylinder and suitable for driving the lock cylinder to longitudinally move, and a button fixedly connected with the cap and suitable for pressing the cap; wherein the method comprises the steps of
The button comprises a basic part sleeved on the cap and an extending part integrally arranged on the periphery of the basic part;
the extension portion includes a lateral transition portion connected to the base portion, and a longitudinal portion connected to the lateral transition portion and distributed parallel to the base portion.
In a preferred embodiment of the present invention, a connecting seat is arranged on the locking block outer cover; the connecting seat comprises a base body for covering the locking block, semi-arc wings integrally arranged on the periphery of the base body, and bosses integrally arranged on the top of the base body and coaxially distributed with the base body; wherein the method comprises the steps of
A first step is formed between the wing and the base; a second step is formed between the base body and the boss.
In a preferred embodiment of the invention, the base body is provided with a containing cavity which is suitable for containing the locking block and is suitable for moving the locking block; the bottom end of the accommodating cavity is provided with a first opening; the side end of the accommodating cavity corresponding to the serrated surface of the locking block is arranged at a second opening which is suitable for the serrated surface of the locking block to extend out; and
a first reset spring is arranged between the cavity wall of the accommodating cavity and the end part of the locking block, which is far away from the locking rack;
the base body and the boss are coaxially provided with a through groove which simultaneously penetrates through the boss and the base body;
the through slot is suitable for the lock cylinder to pass through.
In a preferred embodiment of the present invention, a connecting frame is disposed between the button and the connecting seat; the connecting frame comprises a base part and wing parts integrally arranged on the periphery of the base part;
the wing portion includes a lateral connecting portion connected to the base portion and a longitudinal extension connected to the lateral connecting portion and parallel to the base portion;
the bottom end surface of the base part is connected with the upper end surface of the wing; and
a gap is reserved between the inner side wall surface of the longitudinal extension part facing the base part and the outer side wall of the longitudinal part of the button;
the periphery of the cap is integrally arranged at a round platform part which is suitable for being in contact with the base part;
the bottom end surface of the round platform part is provided with a concave groove which is suitable for the base body part to extend into.
In a preferred embodiment of the invention, a second return spring is arranged between the transverse transition part of the button and the transverse connection part of the connecting frame;
one end of the second return spring is connected with the transverse transition part; and the other end part of the second return spring is connected with the transverse connecting part.
In a preferred embodiment of the present invention, the circular truncated cone portion includes a large circular truncated cone portion and a small circular truncated cone portion integrally connected; the diameter of the large round platform part is larger than that of the small round platform part;
the small round platform part is abutted with the base part; and
the large round platform part is arranged towards the connecting seat; the small round platform part is arranged towards the button.
In the preferred embodiment of the invention, the end surface of the base part, which is abutted against the small round platform part, is provided with a pair of convex connecting lugs; and
the outer side end of the small round platform part is provided with a pair of guide grooves which are suitable for being abutted with the connecting lugs.
By adopting the technical scheme, the invention has the following beneficial effects: according to the head adjusting mechanism of the intra-cavity cutting anastomat, the engagement and separation between the locking block and the locking rack can be controlled by controlling the movement track of the lock cylinder, so that the locking rack can be locked or released, and further the swing head pull piece integrally connected with the locking rack can be conveniently and synchronously released and adjusted. In the process, the operation can be realized by only controlling the pressing of the lock cylinder by one hand, so that the head adjusting mechanism of the intra-cavity cutting anastomat is convenient to operate, and the other hand can be released to perform other operation in the operation process.
Drawings
FIG. 1 is a schematic view showing the overall structure of a head adjusting mechanism of an intra-cavity cutting stapler according to an embodiment of the present invention;
FIG. 2 is a schematic view of the internal first view of the head adjustment mechanism of the intra-luminal cutting stapler according to an embodiment of the present invention;
FIG. 3 is a schematic view of the internal second view of the head adjustment mechanism of the intra-luminal cutting stapler according to an embodiment of the present invention;
FIG. 4 is a schematic view showing a partial structure of the inside of a head adjusting mechanism of an intra-cavity cutting stapler according to an embodiment of the present invention;
FIG. 5 is a schematic view showing a partial structure of the inside of a head adjusting mechanism of an intra-cavity cutting stapler according to an embodiment of the present invention;
FIG. 6 is a schematic view of the structure of a lock block and lock cylinder of a head adjustment mechanism of an intra-cavity cutting stapler according to an embodiment of the present invention;
FIG. 7 is a schematic view of the structure of a locking block of a head adjustment mechanism of an intra-luminal cutting stapler according to an embodiment of the present invention;
FIG. 8 is a schematic structural view of a lock cylinder of a head adjustment mechanism of an intra-cavity cutting stapler according to an embodiment of the present invention;
FIG. 9 is a schematic view of the structure of the head adjusting mechanism of the endoluminal cutting stapler of the present invention in an initial state of the lock cylinder and the lock block;
fig. 10 is a schematic structural view of a lock cylinder of a head adjusting mechanism of an intra-cavity cutting stapler and a lock cylinder of a lock block in a pressed state according to an embodiment of the present invention.
In the figure: the locking block 100, the serrated face 102, the through groove 103, the inclined face 105, the locking rack 200, the swing tab 300, the rectangular groove 302, the lock cylinder 400, the inclined end 402, the L-shaped right-angle end 403, the base portion 501, the pin hole 502, the lateral transition portion 503, the longitudinal portion 505, the base body 601, the wing 603, the boss 602, the housing cavity 605, the first return spring 606, the housing groove 608, the through groove 609, the cap 701, the large round table portion 702, the small round table portion 703, the guide groove 705, the base portion 801, the lateral connection portion 802, the longitudinal extension portion 803, the connection lug 805, and the second return spring 900.
Detailed Description
In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
Referring to fig. 1 to 8, the present embodiment provides a head adjusting mechanism of an intra-cavity cutting stapler, comprising: a locking block 100 and a locking rack 200 adapted to engage locking, and a driving unit adapted to drive the locking block 100 to engage and disengage with respect to the locking rack 200.
Specifically, the end surface of the lock block 100 adapted to be engaged with the lock rack 200 is provided as a serrated surface 102; the bottom end surface of the locking rack 200 is integrally connected to a swing tab 300, where the swing tab 300 is integrally connected to the locking rack 200 by, for example, but not limited to, welding. The serrated face 102 of the lock block 100 is adapted to be in meshed engagement with the serrated face of the lock rack 200. When the locking rack 200 is integrally connected with the swing slider 300 so that the locking rack 200 is engaged with and fixed to the locking block 100, the swing slider 300 and the locking rack 200 are synchronously locked, and the operation of the swing slider 300 cannot be performed. Only when the locking rack 200 is separated from the serrated surface 102 of the locking block 100, the swing head tab 300 can be synchronously released to perform an operation thereof, thereby accomplishing the release of the locking rack 200.
The driving unit used in the present embodiment includes a lock cylinder 400 partially slidably connected to the lock block 100 and adapted to drive the lock block 100 to move laterally with respect to the lock rack 200, and a driving assembly connected to the lock cylinder 400 and adapted to drive the lock cylinder 400 to move longitudinally with respect to the lock block 100; that is, when the lock cylinder 400 moves longitudinally downward with respect to the lock block 100, the lock block 100 is gradually separated with respect to the lock rack 200; while lock cylinder 400 moves longitudinally upward relative to lock block 100, lock block 100 gradually engages with lock rack 200. Specifically, the lock cylinder 400 is adopted to perform the driving function of the locking block 100, so that the locking block 100 performs the engaging and disengaging movement relative to the locking rack 200, and in this process, the locking and releasing effects on the locking rack 200 are achieved.
Referring to fig. 9 and 10, in the process of driving the lock block 100 by the lock cylinder 400 to move, the lock cylinder 400 specifically realizes the driving function on the lock block 100 by a structure that a through groove 103 perpendicular to the swing pull tab 300 and suitable for inserting the lock cylinder 400 is provided on the lock block 100, and the groove wall of the far saw tooth surface 102 of the through groove 103 is provided with an inclined surface 105; the size of the notch at the bottom end of the through groove 103 corresponding to the inclined surface 105 is smaller than the size of the notch at the top end of the through groove 103 corresponding to the inclined surface 105, and it should be noted that, in the state that the locking block 100 is engaged with the locking rack 200, a transverse space R is reserved between the lock cylinder 400 located in the through groove 103 and the groove wall of the near-serrated surface 102 of the through groove 103, and the space R is designed to reserve a movable space in the process of pressing and moving the lock cylinder 400. While the end surface of the portion of the lock cylinder 400 slidably coupled to the lock block 100 includes an inclined end 402 adapted to be engaged with the inclined surface 105 of the lock block 100, the bottom end surface of the lock cylinder 400 has an L-shaped right-angle end 403 coupled to the inclined end 402, the L-shaped right-angle end 403 may be entirely located in the through groove 103 and may be partially exposed outside the through groove 103 in a state where the lock block 100 is engaged with the lock rack 200, and the L-shaped right-angle end 403 is adapted to protrude from a notch at the bottom end of the corresponding inclined surface 105 of the through groove 103 to be inserted into the rectangular groove 302 of the swing tab 300 during the pressing movement of the lock cylinder 400; the rectangular slot 302 parallel to the locking rack 200 is arranged on the position, opposite to the through slot 103, of the swing head pull piece 300, the rectangular slot 302 is suitable for the L-shaped right-angle end 403 of the lock cylinder 400 to pass through, and in the process of pressing down the lock cylinder, the distance R between the side wall of the lock cylinder 400 and the slot wall of the near-serrated surface 102 of the through slot 103 becomes smaller gradually, and in the process of decreasing, a tiny distance still exists between the side wall of the lock cylinder 400 and the slot wall of the near-serrated surface 102 of the through slot 103 after the lock cylinder 400 is pressed down, and the side wall of the lock cylinder 400 can be made to be attached to the slot wall of the near-serrated surface 102 of the through slot 103, so that the embodiment is not limited absolutely. It should be noted that, the rectangular slot 302 is parallel to the locking rack 200, and the meaning of such a design is that, in the process of pressing down the lock cylinder 400 to insert the rectangular slot 302, the engagement locking relationship between the locking block 100 and the locking rack 200 disappears, at this time, the locking rack 200 is released, the swing pull tab 300 can move along the direction of the rectangular slot 302 under the external action, and since the lock cylinder 400 is partially inserted into the rectangular slot 302, the lock cylinder 400 also forms a limiting effect in the moving process of the swing pull tab 300, and after the swing pull tab 300 drives the locking rack 200 to synchronously move along the direction of the rectangular slot 302 to complete the head adjustment of the cutting anastomat, the acting force applied to the swing pull tab 300 disappears, at this time, the swing pull tab 300 and the locking rack 200 stop moving; the gap is formed between the locking block 100 and the swing pull tab 300, so that friction force between the locking block 100 and the swing pull tab 300 cannot be generated in the moving process of the locking block 100, namely, the movement between the swing pull tab 300 and the locking block 100 cannot be influenced mutually. In a state that the lock block 100 is engaged with the lock rack 200, the inclined end 402 of the lock cylinder 400 is attached to the inclined surface 105 of the through groove 103, and the lock cylinder 400 is partially positioned in the through groove 103 and does not protrude from the bottom end of the through groove 103; when the lock block 100 is required to be separated from the lock rack 200, the lock cylinder 400 is longitudinally pressed down with respect to the lock block 100, and in this process, the inclined surface 105 of the lock block 100 causes resistance in the pressing down process of the lock cylinder 400, so that in the continuous pressing down process of the lock block 100, the lock block 100 moves laterally in a direction away from the lock rack 200, so as to gradually reduce resistance of the inclined surface 105 of the lock block 100 to the lock cylinder 400, and in this process, the lock block 100 is separated from the lock rack 200 along with the gradual movement of the lock block 100, so that the lock rack 200 is released.
Since the locking rack 200 is integrally connected with the swing head pull tab 300, the locking rack 200 moves synchronously with the swing head pull tab 300, so that after the swing head pull tab 300 is moved, the serrated surface on the locking rack 200 needs to form a new engagement relationship with the locking rack 200, and thus, the length of the serrated surface of the locking rack 200 is greater than the length of the serrated surface 102 of the locking block 100.
In order to facilitate pressing the lock cylinder 400, the head adjusting mechanism further comprises a cap 701 fixedly connected with the top end of the lock cylinder 400 and adapted to drive the lock cylinder 400 to move longitudinally, and a button fixedly connected with the cap 701 and adapted to press the cap 701, namely, pressing the lock cylinder 400 can be realized by pressing the button. Optionally, the lock cylinder 400 and the cap 701 may be fastened by, for example, but not limited to, interference fit. And, the button and the cap 701 are connected by, for example, but not limited to, a fixing pin, and specifically, the cap 701 and the button may be correspondingly provided with a pin hole 502 through which the fixing pin is suitable for passing.
Wherein the button comprises a basic part 501 sleeved on the cap 701 and an extension part integrally arranged on the periphery of the basic part 501; the base portion 501 is adapted to be connected to the cap 701, i.e., the pin hole 502 is formed in the base portion 501. The extension portion includes a lateral transition portion 503 connected to the base portion 501, and a longitudinal portion 505 connected to the lateral transition portion 503 and distributed parallel to the base portion 501.
A connecting seat is arranged on the outer cover of the locking block 100; the connecting seat comprises a base body 601 for covering the locking block 100, semi-arc wings 603 integrally arranged on the periphery of the base body 601, and a boss 602 integrally arranged on the top of the base body 601 and coaxially distributed with the base body 601; wherein a first step is formed between wings 603 and matrix 601; a second step is formed between the base 601 and the boss 602. On the basis of the structure, optionally, a certain interval is reserved between the cover cap 701 and the base body 601 of the connecting seat so that the base part 501 of the cover cap 701 drives the lock cylinder 400 to move downwards, and further optionally, a concave containing groove 608 which corresponds to the cover cap 701 and is suitable for being partially inserted in the process that the cover cap 701 drives the lock cylinder 400 to move downwards is arranged on the boss 602 of the connecting seat. Both of the above-mentioned alternative structures can be realized so that the base portion 501 of the cap 701 can drive the lock cylinder 400 to be pressed down without being affected by the connecting seat.
More specifically, the base 601 is provided with a receiving cavity 605 adapted to receive the locking block 100 and adapted to move the locking block 100; the bottom end of the accommodating cavity 605 is provided with a first opening, and the first opening is used for facilitating the lock cylinder 400 to extend out of the first opening; and the side end of the accommodating cavity 605 corresponding to the serrated surface of the locking block 100 is arranged at a second opening which is suitable for the serrated surface of the locking block 100 to extend out; and a first return spring 606 is arranged between the cavity wall of the accommodating cavity 605 and the end part of the locking block 100, which is far away from the locking rack 200, wherein the first return spring 606 has the main function that when the lock cylinder 400 is pressed down, the locking block 100 moves away from the locking rack 200 under the action of the lock cylinder 400, the first return spring 606 is compressed at the moment, and when the lock cylinder 400 moves up, the locking block 100 gradually moves towards the direction close to the locking rack 200 under the action of the return force of the first return spring 606, so that the initial position is restored to realize the meshing locking with the locking rack 200 again. The base body 601 and the boss 602 are coaxially provided with a through groove 609 which simultaneously penetrates through the boss 602 and the base body 601, and the through groove 609 is communicated with the accommodating cavity 605. The through slot 609 is adapted to pass through the lock cylinder 400. When the boss 602 of the connection seat is provided with a receiving groove 608 adapted to the base portion 501 of the cap 701 to be partially inserted, the receiving groove 608 at this time communicates with the penetrating groove 609.
More specifically, a connecting frame is arranged between the button and the connecting seat; the connecting frame comprises a base 801 and wing parts integrally arranged on the periphery of the base 801; the wing portion comprises a transverse connection 802 connected to the base portion 801 and a longitudinal extension 803 connected to the transverse connection 802 and parallel to the base portion 801; the bottom end surface of base 801 is connected to the upper end surface of wing 603; and the inner side wall of the longitudinally extending portion 803 facing the base 801 and the outer side wall of the longitudinal portion 505 of the button leave a gap therebetween. The apertures here allow the button to be pressed without the connector forming a resistance to the button.
The outer periphery of the cap 701 is integrally provided with a truncated cone portion adapted to abut against the base 801; the bottom end surface of the truncated cone is provided with a concave groove 706 which is suitable for the base 601 to partially extend into. The design of the concave groove 706 makes the connecting seat and the round platform part orderly match in the process that the cap 701 drives the lock cylinder 400 to be pressed down, and does not form resistance and obstacle that the cap 701 drives the lock cylinder 400 to be pressed down.
The round platform part comprises a large round platform part 702 and a small round platform part 703 which are integrally connected; the diameter of the large circular truncated cone 702 is larger than the diameter of the small circular truncated cone 703; the small round platform 703 is in contact with the base 801; and the large round platform part 702 is arranged towards the connecting seat, and the concave groove 706 is arranged on the end surface of the large round platform part 702 towards the connecting seat; the small truncated cone 703 is provided toward the button. The end surface of the base 801, which is abutted against the small round platform 703, is provided with a pair of convex connecting lugs 805; and a pair of guide grooves 705 adapted to abut against the connecting lugs 805 are provided at the outer end of the small circular truncated cone portion 703. The cooperation of the connecting lug 805 and the guide groove 705 makes the connecting lug 805 define the movement track of the guide groove 705 in the process of driving the lock cylinder 400 to move longitudinally by the cap 701, so that the movement track of the cap 701 is defined to a certain extent, and the longitudinal movement process of the cap 701 is stable.
In order to enable automatic resetting to be realized when the external pressure is small after the button is pressed down, a second reset spring 900 is arranged between the transverse transition part 503 of the button and the transverse connection part 802 of the connecting frame; one end of the second return spring 900 is connected to the lateral transition portion 503; and the other end portion of the second return spring 900 is connected to the lateral connecting portion 802. That is, when the external pressure is applied so that the button drives the lock cylinder 400 to be pressed down, the second return spring 900 is compressed, and when the external pressure is removed, the button is restored to the original position under the action of the second return spring 900, and in this process, the cap 701 is realized to drive the lock cylinder 400 to be moved up. Alternatively, as shown in fig. 8, the second return spring 900 may be a single spring, and the spring is wound around the outer circumferences of the cap 701 and the base 801, that is, the center through holes of the cap 701 and the base 801 passing through the spring, or alternatively, the second return spring 900 may be a plurality of individual springs uniformly distributed around the outer circumferences of the cap 701 and the base 801. Specifically, the present embodiment does not absolutely limit the arrangement of the second return spring 900.
It should be further noted that, in order to limit the pressing track of the button under the pressing action of the hand, a certain height of space Q exists between the longitudinal portion 505 of the button and the transverse connection portion 802 of the connecting frame, and the space Q makes the maximum pressing movement distance of the button under the pressing action of the hand be the space Q, so that the pressing movement distance of the button is not affected regardless of the hand force of the person operating externally, and the stability of the head adjusting mechanism of the intra-cavity surgical stapler in this embodiment can be effectively ensured.
The specific implementation mode of the head adjusting mechanism of the intra-cavity cutting anastomat in the embodiment is as follows:
in an initial state, that is, in a state in which the head of the cutting stapler is not adjustable, the locking block 100 is engaged with the locking rack 200 so that the swing pull tab 300 integrally formed with the locking rack 200 is in a locked state, and thus the head cannot be adjusted. When the head of the cutting anastomat needs to be adjusted, a button is pressed by hand from the outside, so that a cap 701 fixedly connected with the button can drive a lock cylinder 400 to be pressed down relative to a swing pull piece 300, in the process of pressing down the lock cylinder 400, a locking block 100 is moved away from a locking rack 200, at the moment, the locking block 100 moves to enable the meshing relationship between the locking block 100 and the locking rack 200 to disappear, the locking block 100 and the locking rack 200 are separated, namely, the locking rack 200 is released, the swing pull piece 300 is also released, the swing pull piece 300 can move under the action of external power, and in the moving process, the lock cylinder 400 forms a limiting effect on the movement of the swing pull piece 300. In the moving process of the swing pull 300, the pressure of the hand on the button is always kept until the swing pull 300 is moved, and the pressing action of the hand on the button is released when the swing pull can be stopped. Under the action of the first return spring 606 and the second return spring 900, the lock block 100, the lock cylinder 400 and the button are all restored to the initial state, that is, the lock block 100 and the new saw teeth on the lock rack 200 are engaged and locked for a new round.
The foregoing embodiments have been provided for the purpose of illustrating the general principles of the present invention, and are more fully described herein with reference to the accompanying drawings, in which the principles of the present invention are shown and described, and in which the general principles of the invention are defined by the appended claims.
In the description of the present invention, it should be understood that the terms "orientation" or "positional relationship" are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, rather than to indicate or imply that the apparatus 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 invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the mechanism or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its 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 invention, unless expressly stated or limited otherwise, a first feature may include first and second features directly contacting each other, either above or below a second feature, or through additional features contacting each other, rather than directly contacting each other. Moreover, the first feature being above, over, and on the 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 below, beneath, and beneath the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is less level than the second feature.
Claims (6)
1. A head adjustment mechanism for an intra-luminal cutting stapler, comprising: a locking block and a locking rack which are suitable for being engaged and locked, and a driving unit which is suitable for driving the locking block to be engaged and separated relative to the locking rack; wherein the method comprises the steps of
The end surface of the locking block, which is suitable for being meshed with the locking rack, is provided with a serrated surface;
the bottom end surface of the locking rack is integrally connected with a swing head pull piece; and
the driving unit comprises a lock cylinder and a driving assembly, wherein a part of the lock cylinder is connected with the locking block in a sliding way and is suitable for driving the locking block to transversely move relative to the locking rack, and the driving assembly is connected with the lock cylinder and is suitable for driving the lock cylinder to longitudinally move relative to the locking block; i.e.
When the lock cylinder longitudinally moves downwards relative to the locking block, the locking block is gradually separated relative to the locking rack; when the lock cylinder longitudinally moves upwards relative to the locking block, the locking block is gradually meshed relative to the locking rack;
the locking block is provided with a through groove perpendicular to the swing head pull piece, and the groove wall of the far saw tooth surface of the through groove is provided with an inclined surface; the size of the notch at the bottom end of the through groove corresponding to the inclined surface is smaller than that of the notch at the top end of the through groove corresponding to the inclined surface;
the end face of the part of the lock cylinder, which is in sliding connection with the locking block, comprises an inclined end which is suitable for being matched with the inclined surface of the locking block; a rectangular groove parallel to the locking rack is arranged on the swing head pull piece and opposite to the through groove; the rectangular groove is suitable for the lock cylinder to pass through; a gap is formed between the locking block and the swing head pull piece;
the head adjusting mechanism further comprises a cap fixedly connected with the top end part of the lock cylinder and suitable for driving the lock cylinder to longitudinally move, and a button fixedly connected with the cap and suitable for pressing the cap; the button comprises a basic part sleeved on the cap and an extending part integrally arranged on the periphery of the basic part;
the extension part comprises a transverse transition part connected with the basic part and a longitudinal part connected with the transverse transition part and distributed in parallel with the basic part;
a connecting seat is arranged on the locking block outer cover; the connecting seat comprises a base body for covering the locking block, semi-arc wings integrally arranged on the periphery of the base body, and bosses integrally arranged on the top of the base body and coaxially distributed with the base body; wherein a first step is formed between the wing and the base; a second step is formed between the base body and the boss;
the base body is provided with an accommodating cavity which is suitable for accommodating the locking block and is suitable for moving the locking block; the bottom end of the accommodating cavity is provided with a first opening; the side end of the accommodating cavity corresponding to the serrated surface of the locking block is arranged at a second opening which is suitable for the serrated surface of the locking block to extend out; and
a first reset spring is arranged between the cavity wall of the accommodating cavity and the end part of the locking block, which is far away from the locking rack; the base body and the boss are coaxially provided with a through groove which simultaneously penetrates through the boss and the base body; the through slot is suitable for the lock cylinder to pass through.
2. The head adjustment mechanism of an endoluminal cutting stapler of claim 1 wherein the length of the serrated surface of the locking rack is greater than the length of the serrated surface of the locking block.
3. The head adjustment mechanism of an intra-luminal incision stapler according to claim 1, wherein a connecting frame is provided between the button and the connecting seat; the connecting frame comprises a base part and wing parts integrally arranged on the periphery of the base part;
the wing portion includes a lateral connecting portion connected to the base portion and a longitudinal extension connected to the lateral connecting portion and parallel to the base portion;
the bottom end surface of the base part is connected with the upper end surface of the wing; and
a gap is reserved between the inner side wall surface of the longitudinal extension part facing the base part and the outer side wall of the longitudinal part of the button;
the periphery of the cap is integrally arranged at a round platform part which is suitable for being in contact with the base part;
the bottom end surface of the round platform part is provided with a concave groove which is suitable for the base body part to extend into.
4. A head adjustment mechanism of an endoluminal incision stapler according to claim 3, wherein a second return spring is provided between the lateral transition of the push button and the lateral connection of the connecting frame;
one end of the second return spring is connected with the transverse transition part; and the other end part of the second return spring is connected with the transverse connecting part.
5. The head adjustment mechanism of an endoluminal cutting stapler according to any one of claims 3 or 4, wherein said frustoconical portion comprises a large frustoconical portion and a small frustoconical portion integrally connected; the diameter of the large round platform part is larger than that of the small round platform part;
the small round platform part is abutted with the base part; and
the large round platform part is arranged towards the connecting seat; the small round platform part is arranged towards the button.
6. The head adjusting mechanism of the intra-cavity cutting anastomat according to claim 5, wherein the end surface of the base part, which is abutted against the small round table part, is provided with a pair of protruding connecting lugs; and
the outer side end of the small round platform part is provided with a pair of guide grooves which are suitable for being abutted with the connecting lugs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810857471.2A CN108938031B (en) | 2018-07-31 | 2018-07-31 | Head adjusting mechanism of intra-cavity cutting anastomat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810857471.2A CN108938031B (en) | 2018-07-31 | 2018-07-31 | Head adjusting mechanism of intra-cavity cutting anastomat |
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| Publication Number | Publication Date |
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| CN108938031A CN108938031A (en) | 2018-12-07 |
| CN108938031B true CN108938031B (en) | 2023-08-04 |
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| CN201810857471.2A Active CN108938031B (en) | 2018-07-31 | 2018-07-31 | Head adjusting mechanism of intra-cavity cutting anastomat |
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| CN108938031A (en) | 2018-12-07 |
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Address after: 213022 Block B, No. 26 Huashan Middle Road, Xinbei District, Changzhou City, Jiangsu Province Applicant after: Jiangsu jianruibao Medical Technology Co.,Ltd. Address before: 213022 Block B, No. 26 Huashan Middle Road, Xinbei District, Changzhou City, Jiangsu Province Applicant before: CHANGZHOU HEALTHYPOWER MEDICAL INSTRUMENT Co.,Ltd. |
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