Linear stapler cartridge ejector

Abstract

The utility model discloses a linear anastomat nail bin puller, including the integrative connection of having, the pull -out portion and the release portion of the pluggable main part, the connection has the open slot, is equipped with the reverse buckle structure in the open slot, can be elastic and is outside when inserting the nail bin and is reset to form the locking after being in position, the pull -out portion includes a pair of wing plate that is extended to the outside from the lateral axis along the both sides of the connection, and the pull -out structure that is formed for the finger force pull -out is formed on it, the release portion is bent to the upward along the longitudinal axis by the pull -out portion end, including a pair of the elastic arm that is equipped with the release structure, and the release structure can make the elastic arm outside when being pressed in the radial and drive the reverse buckle structure of the connection to separate the nail bin surface. Through above -mentioned mode, the utility model discloses linear anastomat nail bin puller can accurately and quickly hold the nail bin on the nail bin surface, and the doctor is assisted to pull out the nail bin easily, and the problem that the traditional nail bin pulls out the big force, and the operation is hard -working is solved, and the operation can be completed in single hand, and the operation is smooth and reliable is ensured.

Description

Technical Field

[0001] This utility model relates to the field of stapler technology, and in particular to a stapler cartridge puller for a linear stapler. Background Technology

[0002] Linear anastomosis devices, as important instruments in modern surgery, offer significant advantages in open surgery due to their use of titanium screws for tissue anastomosis. They enable precise tissue anastomosis with titanium screws, resulting in a rapid and simple suturing process that greatly improves surgical efficiency. More importantly, they rarely cause side effects or surgical complications, making them popular and highly regarded by numerous clinical surgeons both domestically and internationally.

[0003] However, in the actual use of linear anastomosis devices, the insertion and removal of the staple cartridge is an unavoidable operation. According to feedback from clinicians, due to limitations in product structure and assembly processes, some linear anastomosis devices experience excessive pulling force or even difficulty in removing the staple cartridge during cartridge replacement. This technical defect makes it difficult for surgeons to remove the cartridge, causing inconvenience to the surgical procedure and affecting the overall smoothness of the operation. Utility Model Content

[0004] The main technical problem solved by this utility model is to provide a linear stapler cartridge extractor that can accurately and quickly invert the stapler cartridge surface to assist doctors in easily pulling out the stapler cartridge, solving the problems of large extraction force and laborious operation of traditional stapler cartridges. The entire operation can be completed with one hand, ensuring a smooth and reliable operation.

[0005] To solve the above-mentioned technical problems, the present invention provides a linear stapler cartridge extractor for assisting in the extraction of the stapler cartridge from the stapler body. The extractor includes a removable body comprising an integrally formed connecting portion, a pulling portion, and a releasing portion.

[0006] The connecting part has an opening groove, and the opening groove is provided with an inverted structure that is adapted to the surface of the staple cartridge. The inverted structure can elastically expand outward when the staple cartridge is inserted and reset to lock after it is in place.

[0007] The pulling part includes a pair of symmetrically arranged wing plates, which extend outward from both sides of the connecting part along the transverse axis and form a pulling structure for pulling by applying force with fingers;

[0008] The release section is formed by bending the end of the pull section upward along the longitudinal axis. The release section includes a pair of elastic arms. The elastic arms are provided with a release structure. The release structure can cause the elastic arms to expand outward when subjected to radial compression and drive the buckle structure of the connecting part to disengage from the surface of the staple cartridge.

[0009] In a preferred embodiment of the present invention, the surface of the staple cartridge is provided with a locking protrusion, the width of the opening groove is adapted to the width of the staple cartridge, and the depth of the opening groove is adapted to the length of the locking protrusion.

[0010] In a preferred embodiment of the present invention, the inverted buckle structure includes a cylindrical surface and a rectangular stepped surface that cooperate with the locking protrusion, which guide the connecting part to slide along the surface of the staple cartridge to the locking position when the pluggable body is inserted into the staple cartridge.

[0011] In a preferred embodiment of this utility model, the cylindrical surface is located at the entrance of the inverted structure and matches the transition rounded corner of the pin magazine locking protrusion. The rectangular stepped surface is located behind the cylindrical surface and forms a fit with the end face of the locking protrusion.

[0012] In a preferred embodiment of the present invention, the pulling structure includes a force-applying curved surface adapted to human fingers.

[0013] In a preferred embodiment of this utility model, the force-applying curved surface is provided with anti-slip texture or anti-slip protrusions.

[0014] In a preferred embodiment of this utility model, the bending angle of the elastic arm is 100~150°.

[0015] In a preferred embodiment of the present invention, the release structure includes an elastically deformable finger pressure part, which causes the inverted structure to open outward and detach from the nail cartridge by pressing inward with two fingers.

[0016] In a preferred embodiment of the present invention, the acupressure part is an arc surface that gradually expands from the top of the acupressure part toward the connecting part.

[0017] The beneficial effects of this utility model are: the linkage of the connecting part, the pulling part and the releasing part forms an insertion → locking → pulling → releasing operation, which is quick and easy; it can easily invert the staple cartridge onto the surface of the staple cartridge, and achieve a precise locking fit with the surface of the staple cartridge, which helps the operator to pull the staple cartridge out of the stapler body with less effort, making up for the defect of large staple cartridge pulling force; at the same time, it can be released quickly and easily separated from the staple cartridge. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0019] Figure 1 This is a schematic diagram of a preferred embodiment of the linear stapler cartridge extractor of this utility model;

[0020] Figure 2 This is a front view of a preferred embodiment of the linear stapler cartridge extractor of this utility model;

[0021] Figure 3 This is a schematic diagram of a preferred embodiment of a linear stapler;

[0022] Figure 4 This is a magnified view of the staple cartridge section in a linear stapler.

[0023] Figure 5 This is a schematic diagram of a preferred embodiment of the linear stapler staple cartridge extractor and the staple cartridge surface of this utility model;

[0024] Figure 6 This is a schematic diagram of another preferred embodiment of the linear stapler staple cartridge extractor and staple cartridge surface of this utility model;

[0025] The components in the attached diagram are labeled as follows:

[0026] 1. Connecting part, 11. Opening groove, 12. Cylindrical surface, 13. Rectangular stepped surface, 2. Pulling part, 21. Wing plate, 22. Force-applying curved surface, 3. Release part, 31. Elastic arm, 32. Arc surface, 4. Pin cartridge, 41. Locking protrusion, 42. Transition fillet, 43. End face. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] This utility model relates to a preferred embodiment of a staple cartridge extractor for a linear stapler, which can assist in pulling out the staple cartridge from the stapler body.

[0030] Please see Figures 1 to 6 :

[0031] The linear stapler cartridge extractor includes a pluggable body, which includes an integrally formed connecting part 1, a pulling part 2, and a releasing part 3. The components work together to achieve stable locking, convenient pulling, and rapid release of the staple cartridge.

[0032] Specifically, the first part is the connecting part 1, which has a U-shaped opening groove 11 with the opening direction parallel to the longitudinal axis of the puller. The opening groove 11 is provided with an inverted buckle structure that matches the locking protrusion 41 on the surface of the staple cartridge 4. The inverted buckle structure can elastically expand outward when the staple cartridge 4 is inserted and reset to form a lock after it is in place.

[0033] The width of the opening groove 11 is adapted to the width of the staple cartridge, and the depth of the opening groove 11 is adapted to the length of the locking protrusion 41 on the surface of the staple cartridge, ensuring that there is no shaking when inserted, so that the inverted structure can completely cover the locking protrusion and form a stable lock.

[0034] The inverted structure includes a cylindrical surface 12 and a rectangular stepped surface 13 that mate with the locking protrusion 41, which guide the connecting part to slide along the surface of the nail cartridge to the locking position when the pluggable body is inserted into the nail cartridge 4.

[0035] Furthermore, the cylindrical surface 12 is located at the inverted structure entrance and matches the transition fillet 42 of the staple cartridge locking protrusion 41, which is used to guide the staple cartridge to slide in smoothly during insertion and reduce frictional resistance.

[0036] Furthermore, the rectangular step surface 13 is located behind the cylindrical surface 12 and engages with the end face 43 of the locking protrusion 41: when the nail cartridge is inserted into place, the inverted structure is reset due to elastic deformation, and the rectangular step surface 13 clamps the locking protrusion 41 to achieve axial locking.

[0037] Secondly, there is the pulling part 2, which includes a pair of symmetrically arranged wing plates 21, used to provide a stable and labor-saving pulling force application point.

[0038] In detail, the wing plate 21 extends outward from both sides of the connecting part 1 along the transverse axis and forms a pulling structure for the fingers to apply force to pull it out. It includes a force-applying curved surface 22 that is adapted to human fingers. Compared with the traditional gripping method of directly grasping the surface of the nail cartridge with the hand on a flat surface, the curved surface can conform to the natural curvature of the operator's fingertips, with a larger force-bearing area, making it easier to pull out and saving a lot of effort.

[0039] Furthermore, the force-applying curved surface 22 is provided with anti-slip textures or anti-slip protrusions to ensure stable and reliable operation.

[0040] Next is the release part 3, which is formed by bending the end of the pull part 2 upward along the longitudinal axis. It includes a pair of elastic arms 31, which achieve quick unlocking through elastic deformation. Preferably, the bending angle of the elastic arms 31 is 100~150°, which ensures elasticity while avoiding excessive bending that could lead to fatigue fracture.

[0041] In detail, the elastic arm 31 is provided with a release structure, which can cause the elastic arm to expand outward and drive the buckle structure of the connecting part to disengage from the nail cartridge surface when subjected to radial compression. The release structure includes an elastically deformable finger pressure part, which is an arc surface 32. The arc surface 32 gradually expands from the top of the finger pressure part towards the connecting part to form a guiding slope, thereby reducing the finger compression resistance.

[0042] When two fingers radially press the acupressure point, the elastic arm expands outward, reducing the doctor's inward pressing force and causing the inverted structure to expand outward simultaneously, releasing the locking protrusion 41 of the staple cartridge 4, allowing the staple cartridge extractor to easily separate from the staple cartridge.

[0043] The operation process of the staple cartridge extractor of this utility model linear stapler is as follows:

[0044] Connection phase:

[0045] When inserted, the opening slot 11 is aligned with the staple cartridge 4. The cylindrical surface 12 of the inverted structure inside the opening slot 11 fits against the transition rounded corner 42 of the staple cartridge locking protrusion 41, guiding the staple cartridge 4 to slide in smoothly. The inverted structure elastically expands outward.

[0046] After insertion, the inverted structure elastically resets, and the rectangular step surface 13 clamps and locks the end face 43 of the protrusion 41, thus achieving axial locking.

[0047] Pulling stage:

[0048] After the connection is locked, the operator's fingers press against the force-applying curved surface 22 of the wing plate 21, and a pulling force is applied through the wing plate 21. The force-applying curved surface 22 conforms to the shape of the fingertip, increasing the force-bearing area, so that the operator can pull the staple cartridge out of the stapler body with less effort.

[0049] Release phase:

[0050] After the pull is completed, the two fingers radially press the arc surface 31 of the elastic arm 31 to cause the elastic arm 31 to open outward. The elastic arm 31 drives the inverted buckle structure of the connecting part to open outward in sync, so that it is disengaged from the pin magazine locking protrusion 41, the locking state is released, and the separation of the pin magazine and the puller is completed.

[0051] The beneficial effects of this utility model of a linear stapler cartridge extractor are:

[0052] The connecting part, pulling part and releasing part work together to form an insertion → locking → pulling → releasing operation, which is quick and easy;

[0053] It can easily invert the staple cartridge onto the surface of the staple cartridge, achieving precise locking and cooperation with the surface of the staple cartridge, helping the operator to pull the staple cartridge out of the stapler body more effortlessly, and making up for the deficiency of large staple cartridge pull-out force;

[0054] It can also be released quickly and easily separated from the staple cartridge.

[0055] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A stapler cartridge extractor for a linear stapler, used to assist in removing the stapler cartridge from the stapler body, characterized in that, Includes a pluggable body, which includes an integrally formed connecting portion, a pulling portion, and a releasing portion: The connecting part has an opening groove, and the opening groove is provided with an inverted structure that is adapted to the surface of the staple cartridge. The inverted structure can elastically expand outward when the staple cartridge is inserted and reset to lock after it is in place. The pulling part includes a pair of symmetrically arranged wing plates, which extend outward from both sides of the connecting part along the transverse axis and form a pulling structure for pulling by applying force with fingers; The release section is formed by bending the end of the pull section upward along the longitudinal axis. The release section includes a pair of elastic arms. The elastic arms are provided with a release structure. The release structure can cause the elastic arms to expand outward when subjected to radial compression and drive the buckle structure of the connecting part to disengage from the surface of the staple cartridge.

2. The stapler cartridge extractor for a linear stapler according to claim 1, characterized in that, The surface of the staple cartridge is provided with a locking protrusion, the width of the opening groove is adapted to the width of the staple cartridge, and the depth of the opening groove is adapted to the length of the locking protrusion.

3. The stapler cartridge extractor for a linear stapler according to claim 2, characterized in that, The inverted structure includes a cylindrical surface and a rectangular stepped surface that mate with the locking protrusion, which guide the connecting part to slide along the surface of the staple cartridge to the locking position when the pluggable body is inserted into the staple cartridge.

4. The stapler cartridge extractor for a linear stapler according to claim 3, characterized in that, The cylindrical surface is located at the entrance of the inverted structure and matches the transition fillet of the pin magazine locking protrusion. The rectangular stepped surface is located behind the cylindrical surface and fits with the end face of the locking protrusion.

5. The stapler cartridge extractor for a linear stapler according to claim 1, characterized in that, The pulling structure includes a force-applying curved surface adapted to fit the human finger.

6. The stapler cartridge extractor for a linear stapler according to claim 5, characterized in that, The force-applying curved surface is provided with anti-slip textures or anti-slip protrusions.

7. The stapler cartridge extractor for a linear stapler according to claim 1, characterized in that, The bending angle of the elastic arm is 100~150°.

8. The stapler cartridge extractor for a linear stapler according to claim 1, characterized in that, The release structure includes an elastically deformable finger pressure section, which causes the inverted structure to open outward and detach from the pin cartridge by squeezing inward with two fingers.

9. The stapler cartridge extractor for a linear stapler according to claim 8, characterized in that, The acupressure part is an arc surface that gradually expands from the top of the acupressure part toward the connecting part.

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