Annular knife for circular stapler

Abstract

The utility model relates to annular cutter technical field especially a kind of annular cutter of circular anastomat, including annular cutter main part, the one end of annular cutter main part is provided with blade edge, the surface of blade edge is uniformly fixed with sawtooth blade;Beneficial effect lies in: the utility model annular cutter main part carries out cutting process to foreskin, can be observed by observation window and transparent glass ring to cutting, and, by extension spring elastic mounting connecting ring in the inner side of abutment ring, and in the outer side of connecting ring bonding scraping ring, and scraping ring and transparent glass ring inner surface between scraping contact, thus, after annular cutter main part uses, can be stretched extension spring by connecting ring, and move scraping ring, the inner surface of transparent glass ring is scraped and cleaned, both can clean the inner surface of annular cutter main part and facilitate to observe the inside of annular cutter main part through observation window.

Description

Technical Field

[0001] This utility model relates to the field of annular blade technology, and in particular to an annular blade for a circular anastomosis device. Background Technology

[0002] A medical stapler is a medical device frequently used in surgical procedures on human cavities or foreskin (the double layer of skin covering the glans penis). It is typically used to perform closure, anastomosis, and cutting operations on physiological tissues. A circular stapler is equipped with a ring blade for circumcision of the foreskin.

[0003] The existing circular stapler's ring blade has several drawbacks. When circumcising the foreskin, the cutting area of ​​the ring blade's stop post makes it difficult to observe the cutting area and to scrape and clean the inside of the ring blade. In addition, it is not convenient to connect and push the ring blade through the anvil during use, and the connection end of the ring blade lacks a locking and fastening structure to enhance the connection and tightness between the ring blade and the anvil.

[0004] Therefore, a ring-shaped blade for a circular anastomosis device is proposed. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the inconvenience of observing the cutting area at the annular cutter stop and the inability to scrape and clean the inner side of the annular cutter. Therefore, this invention proposes an annular cutter for a circular stapler.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] Design a circular stapler with an annular blade, comprising an annular blade body, one end of which is provided with a cutting edge, the surface of which is uniformly fixed with serrated edges, and observation windows uniformly opened on the surface of the annular blade body. A transparent glass ring is bonded to the inner surface of the annular blade body, and a scraping mechanism is provided at one end of the inner surface of the transparent glass ring. An abutment ring is detachably installed at the other end of the annular blade body, and a locking mechanism is provided on the inner side of the abutment ring. The scraping structure includes a connecting ring, and a scraping ring is bonded to the outer side of the connecting ring. The scraping ring is an elastic ring structure and makes scraping contact with the inner surface of the transparent glass ring. A tension spring is uniformly connected to one side of the connecting ring, and the other end of the tension spring is connected to the inner side of the abutment ring.

[0008] Furthermore, the observation window has an elongated shape, and the transparent glass ring has a ring-shaped cross-section.

[0009] Furthermore, the inner side of the blade edge is inclined inward, and the serrated edges are distributed circumferentially.

[0010] Furthermore, the surface edge of the abutment ring is uniformly provided with countersunk holes, and the end face of the annular blade body is uniformly provided with first connecting holes, which are threaded holes.

[0011] Furthermore, the first connecting hole is aligned with the countersunk hole, and a first bolt passes through the inside of the countersunk hole. The head of the first bolt is recessed inside the countersunk hole, and its inner end is threaded into the first connecting hole.

[0012] Furthermore, the locking mechanism includes a locking groove and a clamping plate. The interior of the abutting ring protrudes into the interior of the annular blade body. The locking groove is evenly distributed on the inner side of the abutting ring and has a U-shaped structure.

[0013] Furthermore, the inner end of the snap-fit ​​groove has a second connecting hole, which is a threaded hole structure, through which a second bolt passes.

[0014] Furthermore, the tightening plate is fixed to the inner end of the second bolt, and the tightening plate is a circular plate structure with a diameter smaller than the width of the snap-fit ​​groove.

[0015] The circular blade of the circular anastomosis device proposed in this utility model has the following advantages:

[0016] 1. This utility model features observation windows evenly distributed on the surface of the ring-shaped cutter body, and a transparent glass ring bonded to the inner surface of the ring-shaped cutter body. Therefore, during the cutting process of the ring-shaped cutter body, the cut area can be observed through the observation windows and the transparent glass ring. Furthermore, a connecting ring is elastically installed on the inner side of the abutment ring via a tension spring, and a scraping ring is bonded to the outer side of the connecting ring. The scraping ring makes scraping contact with the inner surface of the transparent glass ring. Therefore, after use, the tension spring can be stretched through the connecting ring, and the scraping ring can be moved to scrape and clean the inner surface of the transparent glass ring. This not only cleans the inner surface of the ring-shaped cutter body but also facilitates observation of the interior of the ring-shaped cutter body through the observation windows.

[0017] 2. This utility model uses a first bolt to detachably install an abutment ring at one end of the ring cutter body. A snap-fit ​​groove is evenly opened on the inner side of the abutment ring, and a tightening plate is installed inside the snap-fit ​​groove using a second bolt. Therefore, during the installation of the ring cutter body on the anvil seat, it can be connected to the connecting structure on the anvil seat through the snap-fit ​​groove. Rotating the second bolt drives the tightening plate to snap-fit ​​the structure inside the snap-fit ​​groove, thus facilitating stable installation of the ring cutter body and making it easy to push and connect the ring cutter body. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This utility model Figure 1 Enlarged view of point A;

[0020] Figure 3 This utility model Figure 1 A schematic diagram of the ring cutter body and connecting ring;

[0021] Figure 4 This utility model Figure 1 A schematic diagram of the blade edge and serrated edge;

[0022] Figure 5 This utility model Figure 1 Enlarged view of point B;

[0023] Figure 6 This utility model Figure 1 A schematic diagram of the abutment ring section.

[0024] In the diagram: 1. Ring-shaped blade body; 2. Observation window; 3. Blade edge; 4. Transparent glass ring; 5. Abutment ring; 6. First bolt; 7. Second bolt; 8. Snap-fit ​​groove; 9. Connecting ring; 10. Top plate; 11. Tension spring; 12. Scraping ring; 13. First connecting hole; 14. Serrated blade; 15. Countersunk hole; 16. Second connecting hole. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1

[0027] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The circular stapler shown in the figure includes a circular stapler body 1. One end of the circular stapler body 1 is provided with a cutting edge 3. The surface of the cutting edge 3 is uniformly fixed with serrated blades 14. The surface of the circular stapler body 1 is uniformly provided with observation windows 2. A transparent glass ring 4 is bonded to the inner surface of the circular stapler body 1. A scraping mechanism is provided at one end of the inner surface of the transparent glass ring 4. An abutment ring 5 is detachably installed at the other end of the circular stapler body 1. A locking mechanism is provided on the inner side of the abutment ring 5.

[0028] The scraping structure includes a connecting ring 9, and a scraping ring 12 is bonded to the outside of the connecting ring 9. The scraping ring 12 is an elastic ring structure and makes scraping contact with the inner surface of the transparent glass ring 4. A tension spring 11 is uniformly connected to one side of the connecting ring 9, and the other end of the tension spring 11 is connected to the inner side of the abutment ring 5.

[0029] The observation window 2 is a long strip structure, and the transparent glass ring 4 has a ring-shaped cross-section.

[0030] The surface edge of the abutment ring 5 is uniformly provided with countersunk holes 15, and the end face of the ring cutter body 1 is uniformly provided with first connecting holes 13, which are threaded holes.

[0031] The first connecting hole 13 is aligned with the countersunk hole 15. The first bolt 6 passes through the inside of the countersunk hole 15. The head of the first bolt 6 is recessed inside the countersunk hole 15, and its inner end is threaded into the first connecting hole 13.

[0032] The inner side of the blade edge 3 is inclined inward, and the serrated blades 14 are distributed in a circle. The serrated blades 14 are set at the edge of the blade edge 3, which can improve the sharpness and speed of the ring blade body 1 in cutting the foreskin.

[0033] During the cutting of the foreskin by the ring-shaped blade body 1, the cut area can be observed through the observation window 2 and the transparent glass ring 4. Furthermore, a connecting ring 9 is elastically installed on the inner side of the abutment ring 5 via a tension spring 11, and a scraping ring 12 is bonded to the outer side of the connecting ring 9. The scraping ring 12 makes scraping contact with the inner surface of the transparent glass ring 4. Therefore, after the ring-shaped blade body 1 is used, the tension spring 11 can be stretched by the connecting ring 9, and the scraping ring 12 can be moved to scrape and clean the inner surface of the transparent glass ring 4. This can clean the inner surface of the ring-shaped blade body 1 and facilitate observation of the interior of the ring-shaped blade body 1 through the observation window.

[0034] Example 2

[0035] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The circular stapler shown in the figure includes a circular stapler body 1. One end of the circular stapler body 1 is provided with a cutting edge 3. The surface of the cutting edge 3 is uniformly fixed with serrated blades 14. The surface of the circular stapler body 1 is uniformly provided with observation windows 2. A transparent glass ring 4 is bonded to the inner surface of the circular stapler body 1. A scraping mechanism is provided at one end of the inner surface of the transparent glass ring 4. An abutment ring 5 is detachably installed at the other end of the circular stapler body 1. A locking mechanism is provided on the inner side of the abutment ring 5.

[0036] The snap-fit ​​mechanism includes snap-fit ​​grooves 8 and a top clamping plate 10. The inside of the abutment ring 5 protrudes into the inside of the annular knife body 1. The snap-fit ​​grooves 8 are evenly opened on the inner side of the abutment ring 5 and have a U-shaped structure.

[0037] The inner end of the snap-fit ​​groove 8 has a second connecting hole 16, which is a threaded hole structure, through which a second bolt 7 passes.

[0038] During the process of installing the ring cutter body 1 on the anvil seat, it can be connected to the connecting structure on the anvil seat by inserting and snapping through the snap-fit ​​groove 8, and by rotating the second bolt 7, the top tightening plate 10 can be driven to snap and install the structure inside the snap-fit ​​groove 8, thereby facilitating the stable installation of the ring cutter body 1 and facilitating the pushing and connecting of the ring cutter body 1.

[0039] The top clamping plate 10 is fixed to the inner end of the second bolt 7. The top clamping plate 10 is a circular plate structure, and its diameter is smaller than the width of the snap-fit ​​groove 8.

[0040] Working principle: By uniformly setting observation windows 2 on the surface of the ring-shaped cutter body 1 and bonding a transparent glass ring 4 to the inner surface of the ring-shaped cutter body 1, the cut can be observed through the observation windows 2 and the transparent glass ring 4 during the cutting process of the ring-shaped cutter body 1. In addition, a connecting ring 9 is elastically installed on the inner side of the abutment ring 5 by a tension spring 11, and a scraping ring 12 is bonded to the outer side of the connecting ring 9. The scraping ring 12 makes scraping contact with the inner surface of the transparent glass ring 4. Therefore, after the ring-shaped cutter body 1 is used, the tension spring 11 can be stretched by the connecting ring 9 and the scraping ring 12 can be moved to scrape and clean the inner surface of the transparent glass ring 4. This can clean the inner surface of the ring-shaped cutter body 1 and facilitate the observation of the inside of the ring-shaped cutter body 1 through the observation windows 2.

[0041] A retaining ring 5 is detachably installed at one end of the ring cutter body 1 by means of a first bolt 6. A retaining groove 8 is evenly opened on the inner side of the retaining ring 5, and a tightening plate 10 is set inside the retaining groove 8 by means of a second bolt 7. Therefore, during the process of installing the ring cutter body 1 on the anvil seat, it can be inserted and snapped into the connection structure on the anvil seat through the retaining groove 8. By rotating the second bolt 7, the tightening plate 10 is driven to snap and install the structure inside the retaining groove 8, which facilitates the stable installation of the ring cutter body 1 and facilitates the pushing and connecting of the ring cutter body 1.

[0042] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A circular stapler with an annular blade, comprising an annular blade body (1), characterized in that: One end of the ring-shaped knife body (1) is provided with a cutting edge (3), and the surface of the cutting edge (3) is uniformly fixed with serrated blades (14). The surface of the ring-shaped knife body (1) is uniformly provided with observation windows (2). A transparent glass ring (4) is bonded to the inner surface of the ring-shaped knife body (1). A scraping mechanism is provided at one end of the inner surface of the transparent glass ring (4). A retaining ring (5) is detachably installed at the other end of the ring-shaped knife body (1). A snap-fit ​​mechanism is provided on the inner side of the retaining ring (5). The scraping mechanism includes a connecting ring (9), and a scraping ring (12) is bonded to the outside of the connecting ring (9). The scraping ring (12) is an elastic ring structure and makes scraping contact with the inner surface of the transparent glass ring (4). A tension spring (11) is uniformly connected to one side of the connecting ring (9), and the other end of the tension spring (11) is connected to the inner side of the abutment ring (5).

2. The annular blade of a circular stapler according to claim 1, characterized in that: The observation window (2) is a long strip structure, and the cross-section of the transparent glass ring (4) is a ring structure.

3. The annular blade of a circular stapler according to claim 1, characterized in that: The inner side of the blade edge (3) is inclined inward, and the serrated edge (14) is circumferentially distributed.

4. The annular blade of a circular stapler according to claim 1, characterized in that: The surface edge of the abutment ring (5) is uniformly provided with countersunk holes (15), and the end face of the annular knife body (1) is uniformly provided with first connecting holes (13), which are threaded holes.

5. The annular blade of a circular anastomosis device according to claim 4, characterized in that: The first connecting hole (13) is aligned with the countersunk hole (15). A first bolt (6) passes through the inside of the countersunk hole (15). The head of the first bolt (6) is recessed inside the countersunk hole (15), and its inner end is threaded into the first connecting hole (13).

6. The annular blade of a circular stapler according to claim 1, characterized in that: The snap-fit ​​mechanism includes a snap-fit ​​groove (8) and a top clamping plate (10). The interior of the abutment ring (5) protrudes into the interior of the annular blade body (1). The snap-fit ​​groove (8) is evenly opened on the inner side of the abutment ring (5). The snap-fit ​​groove (8) has a U-shaped structure.

7. The annular blade of a circular stapler according to claim 6, characterized in that: The inner end of the snap-fit ​​groove (8) has a second connecting hole (16), which is a threaded hole structure, and a second bolt (7) passes through its internal thread.

8. The annular blade of a circular stapler according to claim 7, characterized in that: The top clamping plate (10) is fixed to the inner end of the second bolt (7). The top clamping plate (10) is a circular plate structure with a diameter smaller than the width of the snap-fit ​​groove (8).

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