Detachable anastomat
By designing a detachable spring and insert structure in the stapler, the eagle beak and the anvil can be detachably fixed, solving the problem that existing staplers cannot replace standard parts and improving the flexibility and stability of surgical instruments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU ANKANG MEDICAL EQUIP
- Filing Date
- 2025-03-07
- Publication Date
- 2026-04-24
AI Technical Summary
In existing staplers, the eagle beak and the anvil are integrated into one piece, which makes it impossible to replace different specifications of the components according to different clinical scenarios, thus reducing the flexibility of surgical instrument selection.
A detachable stapler was designed. By setting a detachable spring and insert structure between the olecranon and the anvil, the elastic deformation of the spring and the squeezing action of the slot are used to achieve detachable fixation between the olecranon and the anvil, which makes it convenient to replace different specifications of components according to the surgical site and tissue thickness.
It improves the flexibility and stability of the stapler, making it easier to replace parts according to different surgical needs and reducing surgical costs.
Smart Images
Figure CN224155697U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to a detachable stapler. Background Technology
[0002] A stapler is a surgical instrument used to replace traditional manual sutures. It quickly connects (anastomoses) tissues or blood vessels mechanically and is widely used in gastrointestinal, thoracic, and urological surgeries.
[0003] In a stapler, the beak and the anvil are two key components, located at opposite ends of the stapler, working together to staple the tissue. In laparoscopic staplers, to achieve blunt dissection, facilitate the passage of the anvil's tip through narrow tissue spaces, and prevent tissue slippage when the stapler fires the tissue, a beak is typically placed at the front end of the anvil.
[0004] The applicant has discovered that the existing technology has at least the following technical problems: the existing anvil is generally a sheet metal part, and the eagle beak and the anvil are integrally cast or welded in a later process. The one-piece eagle beak cannot be separated, making it difficult to be used in different clinical scenarios. It is impossible to replace different specifications of parts according to the surgical site (such as intestines, blood vessels, and bronchi) and tissue thickness (such as thick-walled gastric tissue or thin-walled intestinal tract), which reduces the flexibility of surgical instrument selection and increases surgical costs. Utility Model Content
[0005] The purpose of this utility model is to provide a detachable stapler to solve the technical problems in the prior art where the olecranon and the anvil cannot be detached, and it is impossible to replace different specifications of components according to different clinical scenarios, resulting in inconvenience in use; the various technical effects of the preferred technical solutions provided by this utility model are described in detail below.
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] The detachable stapler provided by this utility model includes an anvil, a beak body, an insert block and a spring piece located on the beak body, wherein:
[0008] One end of the spring is a fixed end, and both the fixed end and the insert are fixed to the eagle beak body. The spring and the insert are arranged along the thickness direction of the eagle beak body.
[0009] The other end of the spring is a deformable end, which includes a first spring arm and a second spring arm. There is a clearance between the first spring arm and the second spring arm, and the clearance extends to the end face of the deformable end.
[0010] The end of the anvil is provided with a connecting limiting groove and a retaining groove, and the limiting groove and the retaining groove are arranged along the thickness direction of the anvil.
[0011] When the insert is inserted into the limiting groove, the first spring arm and the second spring arm are squeezed closer to each other by the side wall of the slot, thereby fixing the spring piece in the slot by snap-fit.
[0012] Preferably, a locking block is provided on the side of the first elastic arm opposite to the clearance gap and on the side of the second elastic arm opposite to the clearance gap, and the two locking blocks are symmetrically arranged about the clearance gap.
[0013] Preferably, the card slot has only two oppositely arranged sidewalls, the bottom of the card slot is connected to the limiting groove, the upper part of the card slot is an open side, and the inner contour of the card slot matches the outer contour of the two card block structures.
[0014] Preferably, the locking block has a first guide surface, a mating surface, and a second guide surface connected sequentially along the length direction of the spring clip, wherein:
[0015] The first guide surface is located on the side of the mating surface away from the fixed end. The straight distance between the first guide surface and the clearance gradually decreases in the direction away from the fixed end, and the straight distance between the second guide surface and the clearance gradually increases in the direction away from the fixed end.
[0016] Preferably, the limiting groove is a T-shaped groove, and the horizontal section of the T-shaped groove is connected to the card slot;
[0017] The outer contour of the insert block matches the inner contour of the limiting groove, and the insert block can be inserted into the limiting groove along the length direction of the anvil.
[0018] Preferably, the insert block is provided with an opening groove that extends through to the insertion end of the insert block, and the opening groove is coaxially arranged with the clearance gap.
[0019] Preferably, the spring sheet includes a horizontally connected section and an inclined section, wherein:
[0020] One end of the horizontal segment is fixedly connected to the inclined segment, and the first spring arm and the second spring arm are located at the other end of the horizontal segment; the inclined segment is inserted into the eagle beak body and fixedly connected to the eagle beak body.
[0021] Preferably, the beak body is provided with a receiving groove, and the sidewall of the horizontal section is provided with a protrusion, wherein:
[0022] The protrusion is horizontally positioned and located at one end of the first spring arm and the second spring arm facing the inclined section. The protrusion is engaged within the receiving slot.
[0023] Preferably, the insertion end of the anvil is provided with a supporting surface, and the insertion end of the beak body is provided with a mating surface, wherein:
[0024] Both the supporting surface and the mating surface are inclined surfaces. When the beak and the anvil are engaged, the supporting surface and the mating surface fit together.
[0025] The detachable stapler provided by this utility model has the following advantages compared with the prior art: The detachable snap-fit fixation between the auger and the anvil allows for easy installation and removal. During installation, the axis of the anvil is in the insertion direction. The insert block is inserted into the limiting groove, and the first and second spring arms are pressed closer together by the side wall of the groove. When the spring clip is snapped into the groove, the first and second spring arms return to their original positions, and the auger and anvil are snap-fit fixed. During removal, pulling the auger in the opposite direction causes the first and second spring arms to be pressed closer together by the side wall of the groove, separating the spring clip from the groove and thus separating the auger and anvil. This detachable stapler facilitates easy installation and removal between the auger and the anvil, resulting in a more reliable connection. It also allows for the replacement of different specifications of components according to the surgical site (such as intestines, blood vessels, and bronchi) and tissue thickness (such as thick-walled gastric tissue or thin-walled intestinal tract), improving the flexibility of surgical instrument selection. Attached Figure Description
[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.
[0027] Figure 1 This is a schematic diagram of the overall structure of the detachable stapler;
[0028] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;
[0029] Figure 3 This is a schematic diagram showing the installation status of the beak and the anvil;
[0030] Figure 4 This is a first-person view structural diagram of an eagle's beak;
[0031] Figure 5 This is a structural diagram of an eagle's beak from a second-person perspective;
[0032] Figure 6 This is a structural diagram of an eagle's beak from a third-person perspective;
[0033] Figure 7 This is a schematic diagram of the anvil seat structure;
[0034] Figure 8 yes Figure 7 A magnified view of a section at point B in the middle;
[0035] Figure 9 This is a schematic diagram of the mating structure between the eagle beak body and the insert block;
[0036] Figure 10 This is a schematic diagram of the shrapnel structure.
[0037] In the diagram: 1. Eagle beak body; 11. Mating surface; 2. Anvil seat; 21. Slot; 22. Limiting slot; 23. Supporting surface; 3. Spring piece; 301. Fixed end; 31. First spring arm; 32. Second spring arm; 33. Clearance gap; 34. Locking block; 341. First guide surface; 342. Second guide surface; 343. Butt joint surface; 310. Horizontal section; 320. Inclined section; 330. Protrusion; 4. Insert block; 41. Opening slot; 5. Receiving slot. Detailed Implementation
[0038] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0039] In the description of this utility model, it should be understood that the terms "center," "length," "width," "height," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and "side," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0040] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0041] This utility model provides a detachable stapler, which facilitates the installation and removal of the eagle beak and the anvil, making the connection more secure and allowing for the replacement of different specifications of components according to the surgical site or tissue thickness, thereby improving the flexibility of surgical instrument selection.
[0042] The following is combined Figures 1-10 The technical solution provided by this utility model will be described in more detail.
[0043] See Figures 1-10 As shown, the detachable stapler provided by this utility model includes an anvil 2, a beak body 1, an insert block 4 located on the beak body 1, and a spring piece 3. One end of the spring piece 3 is a fixed end 301, and both the fixed end 301 and the insert block 4 are fixed to the beak body 1. The spring piece 3 and the insert block 4 are arranged along the thickness direction of the beak body 1. The other end of the spring piece 3 is a deformable end, which includes a first spring arm 31 and a second spring arm 32, with a clearance gap 33 between the first spring arm 31 and the second spring arm 32. The end of the anvil 2 is provided with a communicating limiting groove 22 and a retaining groove 21, which are arranged along the thickness direction of the anvil 2. When the insert block 4 is inserted into the limiting groove 22, the first spring arm 31 and the second spring arm 32 are pressed closer to each other by the side wall of the retaining groove 21, thereby fixing the spring piece 3 in a snap-fit manner within the retaining groove 21. See also... Figures 4-6 As shown, the clearance gap 33 extends to the end face of the beak-shaped deformation end, which facilitates the elastic deformation of the spring 3.
[0044] See Figure 8 As shown, both the slot 21 and the limiting slot 22 extend to the insertion end of the stapler. The slot 21 is narrow at the insertion end of the stapler to facilitate the compression of the first elastic arm 31 and the second elastic arm 32.
[0045] Among them, see Figure 3 As shown, Figure 3 The arrow in the diagram indicates the assembly direction of the stapling nozzle. Insert the stapling nozzle along the length of the stapler (or the axis of the stapler); combine Figure 2 , Figure 4 and Figure 8 As shown, Figure 4The arrows indicate the direction of force on the first spring arm 31 and the second spring arm 32. When the first spring arm 31 and the second spring arm 32 are inserted into the slot 21, they are squeezed by the side wall of the slot 21. Due to the presence of the clearance gap 33, the first spring arm 31 and the second spring arm 32 can approach each other, allowing them to be inserted into the slot 21. After the first spring arm 31 and the second spring arm 32 are inserted into the slot 21, they move away from each other due to the elastic restoring force, preventing them from detaching from the slot 21. The spring piece 3 is then snapped and fixed in the slot 21.
[0046] In this embodiment, the detachable stapler has a detachable snap-fit connection between the nozzle and the anvil 2. During installation, the axis of the anvil 2 is in the insertion direction. The insert 4 is inserted into the limiting groove 22. The first spring arm 31 and the second spring arm 32 are squeezed closer to each other by the side wall of the groove 21. When the spring piece 3 is snap-fitted and fixed in the groove 21, the first spring arm 31 and the second spring arm 32 are reset, and the nozzle and the anvil 2 are snap-fitted and fixed. During disassembly, the nozzle is pulled in the opposite direction. The first spring arm 31 and the second spring arm 32 are squeezed closer to each other by the side wall of the groove 21. The spring piece 3 separates from the groove 21, and the nozzle and the anvil 2 are separated.
[0047] This detachable stapler allows for easy installation and removal of the eagle beak and the anvil 2, resulting in a more secure connection. It also facilitates the replacement of different sized components based on the surgical site (such as intestines, blood vessels, or bronchi) and tissue thickness (such as thick-walled gastric tissue or thin-walled intestinal tract), thus increasing the flexibility of surgical instrument selection.
[0048] See Figure 1 As shown, after the spring piece 3 is fixed in place with the slot 21, the surface of the spring piece 3 does not protrude from the surface of the stapler.
[0049] As an optional implementation, see Figures 4-6 As shown, a locking block 34 is provided on one side of the first spring arm 31 away from the clearance gap 33 and on one side of the second spring arm 32 away from the clearance gap 33. The two locking blocks 34 are symmetrically arranged about the clearance gap 33.
[0050] The aforementioned locking block 34 is locked and fixed in the locking slot 21, which facilitates the engagement and fixation of the spring piece 3 with the locking slot 21, thereby fixing the eagle beak to the stapler.
[0051] As an optional implementation, see Figure 7 and Figure 8 As shown, the card slot 21 has only two oppositely arranged sidewalls. The bottom of the card slot 21 is connected to the limiting groove 22, and the upper part of the card slot 21 is an open side. The inner contour of the card slot 21 matches the outer contour of the two card blocks 34.
[0052] For details, see Figure 6 As shown, the locking block 34 has a first guide surface 341, a mating surface 343, and a second guide surface 342 connected sequentially along the length of the spring piece 3. The first guide surface 341 is located on the side of the mating surface 343 away from the fixed end 301. The straight distance between the first guide surface 341 and the clearance gap 33 gradually decreases in the direction away from the fixed end 301. The straight distance between the second guide surface 342 and the clearance gap 33 gradually increases in the direction away from the fixed end 301.
[0053] When installing the hawk beak and stapler, see [link to documentation]. Figure 3 and Figure 6 As shown, the first guide surface 341 facilitates the insertion of the card block 34 into the card slot 21, and during the disassembly of the eagle beak, along... Figure 3 The reverse pull of the beak facilitates the disengagement of the locking block 34 from the slot 21 by the second guide surface 342.
[0054] Specifically, when installing the beak, along Figure 3 Insertion is performed in the direction of insertion. Insertion block 4 is inserted into the limiting groove 22. Simultaneously, the first guide surface 341 contacts the side wall of the slot 21. Pressed by the side wall of the slot 21, the first spring arm 31 and the second spring arm 32 move closer to each other, that is, the two locking blocks 34 move closer to each other. Guided by the first guide surface 341, the two locking blocks 34 engage within the slot 21. At this time, the second guide surface 342 cooperates with the side wall of the slot 21 to prevent the spring piece 3 from dislodging. Figure 2 and Figure 6 As shown.
[0055] When disassembling the eagle beak, along with... Figure 3 Pulling the eagle beak in the opposite direction of the arrow causes it to be squeezed by the side wall of the slot 21. The first spring arm 31 and the second spring arm 32 move closer to each other, that is, the two locking blocks 34 move closer to each other. Under the guidance of the second guide surface, the two locking blocks 34 disengage from the slot 21.
[0056] The structure of the aforementioned locking block 34 facilitates the locking and fixing of the spring clip 3 of the eagle beak with the stapler, and also facilitates the disassembly of the spring clip 3 from the stapler.
[0057] This embodiment provides a connection method between the insert block 4 and the limiting groove 22, which mainly serves a limiting function:
[0058] See Figure 8 As shown, the limiting groove 22 is a T-shaped groove, meaning that the cross-section of the limiting groove 22 is T-shaped, and the horizontal section 310 of the T-shaped groove is connected to the slot 21; the outer contour of the insert block 4 matches the inner contour of the limiting groove 22, as shown. Figure 3 As indicated by the arrow, the insert 4 can be inserted into the limiting groove 22 along the length of the abutment seat 2.
[0059] The mating structure of the insert 4 and the limiting groove 22 can limit the non-axial swaying between the beak and the anvil seat 2, thereby improving the stability of the structure.
[0060] As an optional implementation, see Figure 5 As shown, the plug 4 is provided with an opening groove 41, which extends through to the plug end of the plug 4, and the opening groove 41 is coaxial with the clearance gap 33.
[0061] The structure of the opening groove 41 facilitates the first spring arm 31 and the second spring arm 32 to approach each other, so that the spring piece 3 will deform under the squeezing action of the slot 21.
[0062] This embodiment provides a specific structure for the spring 3:
[0063] See Figure 10 As shown, the spring 3 includes a horizontal section 310 and an inclined section 320 that are fixedly connected, wherein: one end of the horizontal section 310 is fixedly connected to the inclined section 320, and the first spring arm 31 and the second spring arm 32 are located at the other end of the horizontal section 310; the inclined section 320 is inserted into the beak body 1 and fixedly connected to the beak body 1.
[0064] The inclined section 320 can be inserted into the beak body 1 and fixedly connected by means of adhesive or other methods. The above-mentioned structure of the spring piece 3 matches the shape of the beak body 1, which improves the structural stability between the spring piece 3 and the beak body 1.
[0065] As an optional implementation, see Figure 9 and Figure 10 As shown, the eagle beak body 1 is provided with a receiving groove 5, and the side wall of the horizontal section 310 is provided with a protrusion 330, wherein: the protrusion 330 is horizontally arranged, the protrusion 330 is located at one end of the inclined section 320 of the first spring arm 31 and the second spring arm 32, and the protrusion 330 is engaged in the receiving groove 5.
[0066] The inclined section 320 is inserted into the eagle beak body 1 and fixed by secondary injection molding (coating). The protrusion 330 on the horizontal section 310 cooperates with the receiving slot 5 on the eagle beak body 1 to prevent relative displacement between the spring piece 3 and the eagle beak body 1, thereby improving the stability of the structure and preventing the spring piece 3 from separating from the eagle beak body 1.
[0067] See Figures 1-6 As shown, the spring piece 3 is inserted into the interior of the beak body 1 through the inclined section 320 and fixed by secondary injection molding. The spring piece 3 does not protrude from the surface of the beak body 1 and does not affect the use of the beak. The limiting function is achieved by the insertion of the insert block 4 on the beak body 1 into the upper limit groove 22 of the anvil seat 2. The beak and the anvil seat 2 can be locked together by the deformation of the first spring arm 31 and the second spring arm 32 of the spring piece 3.
[0068] As an optional implementation, see Figure 2 As shown, the insertion end of the anvil 2 is provided with a supporting surface 23, and the insertion end of the beak body 1 is provided with a mating surface 11. Both the supporting surface 23 and the mating surface 11 are inclined surfaces. When the beak and the anvil 2 are engaged, the supporting surface 23 and the mating surface 11 fit together.
[0069] When the beak and the anvil 2 are engaged, the supporting surface 23 and the mating surface 11 fit together, which improves the stability of the connection structure between the beak and the anvil 2.
[0070] The detachable stapler of this embodiment, when assembled, refers to the diagram and... Figure 8 As shown, the first guide surface 341 of the locking block 34 first contacts the side wall of the locking groove 21. Under the compression of the locking groove 21, the first spring arm 31 and the second spring arm 32 move closer to each other. Due to the existence of the clearance gap 33, space is provided for the movement of the first spring arm 31 and the second spring arm 32. At the same time, the insert block 4 is inserted into the limiting groove 22. When the assembly is completed, the two locking blocks 34 can be fixed to the locking groove 21 on the stapler, and the spring piece 3 is engaged with the stapler to form an axial buckle, providing axial connection force. During disassembly, along Figure 3 In the opposite direction, the eagle beak, under the pressure of the slot 21, the first spring arm 31 and the second spring arm 32 approach each other, and the two locking blocks 34 can disengage from the slot 21, realizing the separation of the spring piece 3 from the slot 21. At the same time, the insert block 4 separates from the limiting groove 22, and the eagle beak separates from the anchor seat 2.
[0071] The specific features, structures, or characteristics described in this specification may be combined in any suitable manner in one or more embodiments or examples.
[0072] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0073] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A detachable stapler, characterized in that, Includes a pin seat, a beak body, an insert block located on the beak body, and a spring clip, wherein: One end of the spring is a fixed end, and both the fixed end and the insert are fixed to the eagle beak body. The spring and the insert are arranged along the thickness direction of the eagle beak body. The other end of the spring is a deformable end, which includes a first spring arm and a second spring arm. There is a clearance between the first spring arm and the second spring arm, and the clearance extends to the end face of the deformable end. The end of the anvil is provided with a connecting limiting groove and a retaining groove, and the limiting groove and the retaining groove are arranged along the thickness direction of the anvil. When the insert is inserted into the limiting groove, the first spring arm and the second spring arm are squeezed closer to each other by the side wall of the slot, thereby fixing the spring piece in the slot by snap-fit.
2. The detachable stapler according to claim 1, characterized in that, Both the side of the first spring arm facing away from the clearance gap and the side of the second spring arm facing away from the clearance gap are provided with locking blocks, and the two locking blocks are symmetrically arranged about the clearance gap.
3. The detachable stapler according to claim 2, characterized in that, The card slot has only two opposing sidewalls, the bottom of the card slot is connected to the limiting groove, the upper part of the card slot is an open side, and the inner contour of the card slot matches the outer contour of the two card block structures.
4. The detachable stapler according to claim 2, characterized in that, The card block has a first guide surface, a mating surface, and a second guide surface connected sequentially along the length direction of the spring clip, wherein: The first guide surface is located on the side of the mating surface away from the fixed end. The straight distance between the first guide surface and the clearance gradually decreases in the direction away from the fixed end, and the straight distance between the second guide surface and the clearance gradually increases in the direction away from the fixed end.
5. The detachable stapler according to claim 1, characterized in that, The limiting groove is a T-shaped groove, and the horizontal section of the T-shaped groove is connected to the card slot; The outer contour of the insert block matches the inner contour of the limiting groove, and the insert block can be inserted into the limiting groove along the length direction of the anvil.
6. The detachable stapler according to claim 1, characterized in that, The insert block is provided with an opening groove that extends through to the insertion end of the insert block, and the opening groove is coaxial with the clearance gap.
7. The detachable stapler according to claim 1, characterized in that, The spring clip includes a horizontally connected section and an inclined section, wherein: One end of the horizontal segment is fixedly connected to the inclined segment, and the first spring arm and the second spring arm are located at the other end of the horizontal segment; the inclined segment is inserted into the eagle beak body and fixedly connected to the eagle beak body.
8. The detachable stapler according to claim 7, characterized in that, The beak body is provided with a receiving groove, and the side wall of the horizontal section is provided with a protrusion, wherein: The protrusion is horizontally positioned and located at one end of the first spring arm and the second spring arm facing the inclined section. The protrusion is engaged within the receiving slot.
9. The detachable stapler according to claim 1, characterized in that, The insertion end of the anvil is provided with a supporting surface, and the insertion end of the beak body is provided with a mating surface, wherein: Both the supporting surface and the mating surface are inclined surfaces. When the beak and the anvil are engaged, the supporting surface and the mating surface fit together.