Nail abutting seat, switching tool and surgical instrument
By designing a swingable anvil, the problem of increased consumables for surgical instruments during intra-abdominal surgery is solved. It enables the same instrument to be switched in different positions, adapting to various operational needs and reducing medical costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU KEMAN MEDICAL TECHNOLOGY CO LTD
- Filing Date
- 2025-01-20
- Publication Date
- 2026-05-01
AI Technical Summary
Existing surgical instruments require frequent switching between straight-end instruments and curved-end instruments during intra-abdominal surgery, leading to increased consumables and higher medical costs.
Design an anvil base comprising an anvil base and a swingable swing component. A limiting structure enables the swing component to switch between an initial position and a swing position, adapting to different surgical operation needs and reducing the types of instruments and costs.
By using a single anvil to perform operations such as tissue cutting, anastomosis, and tissue separation, the number of instruments and usage costs are reduced, while the flexibility and efficiency of the operation are improved.
Smart Images
Figure CN224179749U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to an anti-pin seat, a switching tool, and a surgical instrument. Background Technology
[0002] Taking surgical instruments in the abdominal cavity as an example, due to the limited operating space, the operation of instruments is relatively less flexible. In particular, when doctors are freeing blood vessels, they need to use instruments with a certain curvature at the end to make it easier for doctors to lift the blood vessels and separate them from other tissues.
[0003] However, the need for instruments with curved ends is not very frequent; surgeons often use straight instruments. To accommodate these two scenarios, surgeons switch between straight-end instruments and curved-end instruments during surgery. For example, straight-end instruments are used when closure and separation are not required, while curved-end instruments are used when closure and separation are needed. Alternatively, a curved-end separator can be added to the end of a straight-end instrument; when separation is required, the curved-end separator is added to the end of the straight-end instrument; when separation is not required, the separator is removed. Both of these solutions add a consumable item, resulting in a significant increase in medical costs compared to using straight-end instruments. Utility Model Content
[0004] In view of the above problems, this application provides an anvil, a switching tool, and a surgical instrument to solve at least one of the problems existing in the background art. By using the swinging member to swing relative to the anvil base at different positions, different operations such as tissue cutting, anastomosis, and tissue separation can be performed using the same anvil without the need for additional consumables, thereby reducing the types and costs of instruments.
[0005] To achieve the above objectives, the embodiments of this application provide the following technical solutions:
[0006] A first aspect of this application provides an anti-pin seat, the anti-pin seat comprising:
[0007] Anchor base;
[0008] A swing member is oscillatingly connected to the anvil base via a connecting shaft, so that the swing member can be switched relative to the anvil base between an initial position and at least one swing position;
[0009] The limiting structure includes a first limiting part disposed on the anvil base and a second limiting part disposed on the swing member. Under the snap-fit action of the first limiting part and the second limiting part, the swing member can be at least maintained in the initial position or the swing position.
[0010] The initial position is used at least for tissue separation and blood vessel detachment, and the swing position is used for tissue retraction and separation; when the swing member is in the swing position, the angle between the swing member and the anvil base is greater than the angle between the swing member and the anvil base when the swing member is in the initial position.
[0011] Optionally, the swing position includes at least two; during the swinging process, the swing member can switch between at least two swing positions relative to the abutment base.
[0012] Optionally, the first limiting part includes a limiting protrusion, and the second limiting part includes a limiting groove. One limiting protrusion corresponds to at least two limiting grooves, and one limiting protrusion can be engaged in the limiting grooves at different positions so that the swing member can switch to different positions.
[0013] Optionally, the first limiting part includes a limiting groove, and the second limiting part includes a limiting protrusion. One limiting groove corresponds to at least two limiting protrusions. The limiting protrusions at different positions can be engaged in the limiting groove so that the swing member can switch to different positions.
[0014] Optionally, the limiting protrusion is located at one end of the anvil base;
[0015] At least two of the limiting grooves are located at the end opposite to the abutment base of the swing member, and are spaced apart around the swing center of the swing member;
[0016] Under the action of external force, the limiting grooves at different positions engage with the limiting protrusions to allow the swinging member to switch between the initial position and at least one of the swinging positions, or to allow the swinging member to switch between at least two of the swinging positions.
[0017] Optionally, the anvil further includes:
[0018] An elastic element is located between the anvil base and the swing element to allow the limiting protrusion and / or the limiting groove to form an elastic engagement.
[0019] Optionally, the anvil further includes a deformable cover that covers the outside of the connection between the swing member and the anvil base and deforms as the swing member swings.
[0020] Optionally, the covering includes a silicone sleeve fitted at the connection between the swing member and the anvil base.
[0021] A second aspect of this application provides a switching tool, the switching tool comprising:
[0022] Tool body;
[0023] A connecting portion is provided on the tool body, the connecting portion including a receiving groove for accommodating at least a portion of the swing member, the connecting portion being used to connect with the swing member of the anvil to drive the swing member to swing.
[0024] A third aspect of this application provides a surgical instrument, the surgical instrument including an anvil as described in any embodiment of the first aspect;
[0025] Or,
[0026] The surgical instrument includes an anvil as described in any embodiment of the first aspect; and a switching tool as described in any embodiment of the second aspect.
[0027] The anvil provided in this application embodiment has at least the following beneficial effects:
[0028] The anvil is divided into two parts: an anvil base and a swinging component. Utilizing the swinging component's switchable position relative to the anvil base between an initial position and at least one swinging position, the component swings to the swinging position when retraction and separation operations are needed; when no retraction or separation operations are required, the swinging component returns to the initial position. At this point, the anvil base can perform tissue separation and blood vessel dissection operations as if it were a straight instrument. Furthermore, the connection between the swinging component and the anvil base means that the swinging component can switch positions while maintaining this connection, eliminating the need for additional consumables. A single anvil base can be used to perform different operations such as tissue cutting, anastomosis, and tissue retraction and separation, reducing the variety and cost of instruments. Attached Figure Description
[0029] To more clearly illustrate the technical solutions in the embodiments of this application 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0030] Figure 1 This is a schematic diagram of the structure of the anvil seat when the swinging member is in the initial position according to some embodiments of this application;
[0031] Figure 2 This is a schematic diagram of the structure of the abutment seat when the swinging member is in one of the swinging positions according to some embodiments of this application;
[0032] Figure 3 This is a top view of the abutment seat when the swinging member is in its initial position, according to one implementation of this application.
[0033] Figure 4 for Figure 3 Cross-sectional view at point AA;
[0034] Figure 5 for Figure 4 Enlarged view at F1;
[0035] Figure 6 This is a partial cross-sectional view of the front end of the abutment when the swinging member is in one of the swinging positions in one embodiment of this application;
[0036] Figure 7 This is a schematic diagram of the structure of the anvil base in one embodiment of this application;
[0037] Figure 8 for Figure 7 A partial structural diagram of the front end of the center anvil base;
[0038] Figure 9 This is a schematic diagram of the structure of the swinging component in one embodiment of this application;
[0039] Figure 10 This is a top view of the abutment seat when the swing member is in the initial position, according to another embodiment of this application;
[0040] Figure 11 for Figure 10 Cross-sectional view at point BB;
[0041] Figure 12 for Figure 11 Cross-sectional view at point C;
[0042] Figure 13 for Figure 10 Enlarged view at point A2;
[0043] Figure 14 for Figure 12 Enlarged view at point A3;
[0044] Figure 15 This is a top view of the switching tool in another embodiment of this application;
[0045] Figure 16 for Figure 15 Cross-sectional view at point II;
[0046] Figure 17 for Figure 15 Cross-sectional view at point JJ;
[0047] Figure 18 for Figure 17 Cross-sectional view at point KK;
[0048] Figure 19 for Figure 17 Enlarged view at A7 in the middle;
[0049] Figure 20 This is a schematic diagram of the structure of the swing member connection in another embodiment of this application;
[0050] Figure 21 for Figure 20 Cross-sectional view of the connection of the swing component. Detailed Implementation
[0051] To make the technical solution and beneficial effects of this utility model more apparent and understandable, a detailed description is provided below by listing specific embodiments. The accompanying drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly show the details of the local features; unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application pertains.
[0052] In the description of this utility model, the terms "width", "thickness", "upper", "lower", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. That is, they should not be construed as limitations on this utility model.
[0053] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating the relative importance of the indicated features or the number of indicated technical features. Therefore, a feature specified as "first" or "second" can explicitly include at least one of those features. In the description of this invention, "a plurality of" means at least two, such as two, three, etc.
[0054] In this utility model, unless otherwise explicitly defined, the terms "installed," "equipped with," "connected," "fixed," and "set up" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can also refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0055] Combination Figures 1 to 14 An example of the pin seat 100 is described below.
[0056] Combination Figure 1 and Figure 2As shown, the anvil seat 100 of this embodiment includes an anvil base 110 and a swing member 120. The swing member 120 is connected to the anvil base 110 and can swing relative to the anvil base 110, so that the swing member 120 relative to the anvil base 110... Figure 1 The initial position shown and Figure 2 The swing positions shown can be switched; wherein the initial position is used for at least one of tissue separation and blood vessel detachment, and the swing position is used for tissue retraction and separation; the limiting structure 140 includes a first limiting part disposed on the anvil base 110 and a second limiting part disposed on the swing member 120, and under the cooperative action of the first limiting part and the second limiting part, the swing member 120 can be maintained at least in the initial position or the swing position.
[0057] The swing position can be one, two, three or more. Figure 2 Only one swing position is shown as an example.
[0058] When the swing member 120 is in the initial position, the anvil 100 has the same or substantially the same function as existing straight-end instruments. When the swing member 120 is in the swing position, the angle between the swing member 120 and the anvil base 110 is greater than the angle between the swing member 120 and the anvil base 110 when the swing member 120 is in the initial position. That is, compared to the initial position, the angle between the swing member 120 and the anvil base 110 is smaller when the swing member 120 is in the swing position. In other words, when the swing member 120 swings to the swing position, the front end of the anvil 100 bends more, allowing for better retraction and separation operations.
[0059] The limiting structure 140 keeps the swing member 120 in the desired position and prevents it from changing position undesirably. The swing member 120 can only change position after the external force overcomes the limiting effect of the limiting structure 140.
[0060] The anvil 100 is divided into two parts: an anvil base 110 and a swingable swing member 120. The overall length of the anvil 100 is not increased. For example, when the swing member 120 is in the initial position, the length of the anvil 100 is approximately 100-105 cm, and the width is approximately 10-12 cm. In a specific example, the length of the anvil 100 is approximately 104 cm, and the width is approximately 12 cm.
[0061] like Figure 9 As shown, the swing member 120 has a concave arc surface 121, and its width gradually decreases towards the front end. When in the swing position, the front end of the swing member 120 can pass through the gap between the target tissue and other tissues, thereby realizing the convergence and separation of the tissue.
[0062] Utilizing the switchable nature of the swing element 120 relative to the anvil base 110 between an initial position and at least one swinging position, the swing element 120 is swung to the swinging position when retraction and separation operations are required; when retraction and separation operations are not required, the swing element 120 is returned to the initial position. At this time, the anvil base 100 can perform tissue separation and blood vessel dissociation operations as if it were a straight instrument. Moreover, the connection between the swing element 120 and the anvil base 110 means that the swing element 120 can switch positions while maintaining its connection with the anvil base 110, without increasing consumables. Different operations such as tissue cutting, anastomosis, tissue retraction, and separation can be performed using the same anvil base 100, reducing the types of instruments and costs.
[0063] For example, the limiting structure 140 may include, but is not limited to, a snap-fit structure. For instance, it may also be implemented using ratchet pawls, electric limiting mechanisms, or other similar methods.
[0064] The switching of the position of the swing member 120 includes: the swing member 120 being switchable between an initial position and any swing position, and when there are at least two swing positions, the swing member 120 being able to switch between at least two swing positions relative to the abutment base 110 during the swinging process.
[0065] In some alternative embodiments, the position of the swing member 120 is different, and the included angle between the swing member 120 and the abutment base 110 is also different.
[0066] contrast Figure 1 and Figure 2 When the swing member 120 is in the initial position, the angle between the swing member 120 and the pin base 110 is greater than the angle between the swing member 120 and the pin base 110 when the swing member 120 is in any swing position.
[0067] When there are at least two swing positions, the swing member 120 is in different swing positions, and the included angle between the swing member 120 and the anvil base 110 is also different. In this way, by swinging the swing member 120, the degree of bending of the front end of the anvil base 100 can be adjusted, which can adapt to the contraction and separation of tissues under different conditions, which not only makes operation and use more convenient, but also further expands the function of the anvil base 100.
[0068] The swinging component 120 and the anti-pin base 110 can be connected by a hinge, a shaft, or a flexible component to achieve the swinging motion. However, it is not limited to these methods. The following is a detailed explanation using a shaft connection as an example:
[0069] In some alternative embodiments, such as Figure 5 , Figure 6 and Figure 8As shown, the anvil base 100 also includes a connecting shaft 150, and the swing member 120 is swayably connected to the anvil base 110 via the connecting shaft 150.
[0070] The swinging component 120 swings around the connecting shaft 150.
[0071] In some implementations, the connecting shaft 150 and the anti-pin base 110 are integral components, and the swing member 120 has a notch or other features. Figure 9 The hole 122 shown fits with the connecting shaft 150.
[0072] In some other implementations, the connecting shaft 150 and the anvil base 110 are two separate components, while the connecting shaft 150 and the swing member 120 are an integral component. After assembling the anvil base 110 and the connecting shaft 150, the swing member 120 can swing relative to the anvil base 110.
[0073] In some other implementations, the connecting shaft 150, the anvil base 110, and the swing member 120 are three separate components. The anvil base 110 and the swing member 120 can be assembled before the connecting shaft 150 is assembled.
[0074] In some alternative embodiments, such as Figure 8 As shown, the first limiting portion 140 includes a limiting protrusion 141, such as... Figure 9 As shown, the second limiting part 140 includes a limiting groove 142. One limiting protrusion 141 corresponds to at least two limiting grooves 142. One limiting protrusion 141 can be engaged in the limiting grooves 142 at different positions so that the swing member 120 can switch to different positions.
[0075] Figure 5 and Figure 6 An example is shown where the anvil base 110 has a limiting protrusion 141 and the swing member 120 has two limiting grooves 142. Figure 5 As shown, when the limiting protrusion 141 is engaged in one of the limiting grooves 142, the swing member 120 is in its initial position, the angle between the swing member 120 and the anvil base 110 is relatively large, and the front end of the anvil base 100 is only slightly bent. Figure 6 As shown, when the limiting protrusion 141 is inserted into another limiting groove 142, the swing member 120 is in the swing position, the angle between the swing member 120 and the anvil base 110 becomes smaller, and the bending degree of the front end of the anvil base 100 increases.
[0076] In some alternative embodiments, the number of limiting grooves corresponding to a limiting protrusion 141 can be increased to three, four or more, so that the swing member 120 can switch between at least two swing positions in addition to the initial position.
[0077] It is understandable that the number of limiting protrusions 141 is not limited to one; there can be two or more.
[0078] In some alternative embodiments, such as Figure 8 As shown, the limiting protrusion 141 is located at one end of the anvil base 110; as Figure 9 As shown, at least two limiting grooves 142 are located at the opposite end of the swing member 120 and the abutment base 110, and are distributed at intervals around the swing center of the swing member 120; under the action of external force, the limiting grooves 142 at different positions engage with the limiting protrusions 141 to switch the swing member 120 between the initial position and at least one swing position, or to switch the swing member 120 between at least two swing positions.
[0079] As can be seen from the figure, the limiting protrusion 141 is located at the front end of the anvil base 110. "Front end" refers to the end that is farther from the operator (usually a doctor) and closer to the tissue. "Rear end" refers to the other end that is closer to the operator and farther from the tissue.
[0080] The center of oscillation here can be understood as the axis of the connecting shaft 150.
[0081] from Figure 9 As can be seen, a "protrusion 143" is formed between two adjacent limiting grooves 142. When moving from one limiting groove 142 to another limiting groove 142 from the limiting protrusion 141, it is necessary to cross the "protrusion 143". This makes the position switching of the swing member 120 require overcoming a large force, and also provides a "position sense" for the position switching operation, thus improving the user experience.
[0082] In embodiments not illustrated in this application, the limiting groove 142 may also be disposed on the anti-pin base 110, and the limiting protrusion 141 may be disposed on the swing member 120. Specifically, the first limiting part 140 includes a limiting groove, and the second limiting part 140 includes a limiting protrusion. One limiting groove corresponds to at least two limiting protrusions, and the limiting protrusions at different positions can be engaged in the limiting groove to allow the swing member 120 to switch to different positions.
[0083] Figures 10 to 14 Another structure of the anvil 100 is shown.
[0084] In some alternative embodiments, such as Figure 13 and Figure 14 As shown, the anvil base 100 also includes an elastic member 160, which is located between the anvil base 110 and the swing member 120, so that the limiting protrusion 141 and the limiting groove 142 form an elastic engagement.
[0085] By adding the elastic element 160, the swing element 120 and the anti-pin base 110 can be made to make elastic contact at the mating point, so as to achieve elastic locking between the two and improve the reliability and stability of the limiting structure 140.
[0086] Elastic element 160 can be like Figure 14 It is fixed to the limiting protrusion 141 as shown. Alternatively, the elastic element 160 can also be fixed in the limiting groove 142.
[0087] The elastic element 160 can be a sheet or a spring, and the number of sheets or springs is not limited to one. For example, Figures 20 to 21 Another structure of the anvil 100 is shown.
[0088] like Figures 20 to 21 As shown, the anvil base 100 further includes an elastic element 160 (such as a spring), which is located between the anvil base 110 and the swing member 120 to allow the limiting protrusion 141 and the limiting groove 142 to form an elastic engagement. One end of the spring is engaged with the limiting protrusion 141, and the other end is installed in the mounting groove 111 of the anvil base 110 and abuts against the inner wall of the mounting groove 111. Optionally, there are two springs, and the number of limiting protrusions 141 matches the number of springs to make the elastic engagement more stable. The springs allow the swing member 120 and the anvil base 110 to make elastic contact at their mating point, achieving an elastic engagement between the two and improving the reliability and stability of the limiting structure 140.
[0089] In some alternative embodiments, such as Figure 5 and Figure 6 As shown, the anvil base 100 also includes a deformable cover 130, which covers the outside of the connection between the swing member 120 and the anvil base 110 and deforms as the swing member 120 swings.
[0090] The cover 130 is used to prevent tissue from entering the gap between the swing member 120 and the anvil base 110, which would cause the swing member 120 to swing inflexibly. The deformability of the cover 130 can adapt to the swing of the swing member 120, so that it deforms synchronously with the swing of the swing member 120.
[0091] The thickness of the covering 130 is relatively thin, and it can be specifically a covering film.
[0092] In some alternative embodiments, the cover 130 includes a silicone sleeve fitted at the junction of the swing member 120 and the abutment base 110.
[0093] In addition to silicone, the cover 130 can also be made of other materials that are harmless to living organisms (such as the human body).
[0094] This utility model also provides a switching tool 200.
[0095] Figures 15 to 19 An exemplary structural diagram of the switching tool 200 is shown.
[0096] like Figure 18 and Figure 19 As shown, the switching tool 200 provided in this embodiment includes: a tool body and a connecting part. The connecting part is disposed on the tool body and is used to connect with the swing member 120 of the anchor seat 100 in any of the above embodiments to drive the swing member 120 to swing.
[0097] Although the position of the oscillating component 120 can be changed manually without the aid of the switching tool 200, its surface is contaminated after it enters the body, making manual operation inconvenient. Furthermore, the oscillating component 120 is relatively small, and the latch between it and the anvil base 110 is quite tight, making manual operation difficult. Using the switching tool 200 allows for easier and more effortless switching of the oscillating component 120's position. Of course, other tools, such as surgical forceps, can also be used to directly change the position and angle of the oscillating component 120.
[0098] The switching tool 200 can be disposable or reused after cleaning and disinfection.
[0099] refer to Figure 19 As shown, in some alternative embodiments, the joint includes a receiving groove 210 that accommodates at least a portion of the swing member 120.
[0100] from Figure 16 and Figure 17 As can be seen, the switching tool 200 is roughly a long rod-shaped structure. The receiving groove 210 is located at one end of the switching tool 200. After inserting the front end of the swing member 120 into the receiving groove 210, an external force can be applied to the other end of the switching tool 200, making it easier to switch the position of the swing member 120.
[0101] This utility model also provides a surgical instrument, which includes the anvil 100 described in any of the foregoing embodiments.
[0102] Alternatively, the surgical instrument may include the anvil 100 and switching tool 200 as described in any of the foregoing embodiments.
[0103] The surgical instruments in this application include, but are not limited to, staplers, and their uses are not limited to abdominal surgery; they can also be used in other surgeries such as gynecology, pediatrics, and thoracic surgery.
[0104] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.
[0105] In the description of this specification, references to "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. 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.
[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. An anvil, characterized in that, The anvil includes: Anchor base; A swing member is oscillatingly connected to the anvil base via a connecting shaft, so that the swing member can be switched relative to the anvil base between an initial position and at least one swing position; The limiting structure includes a first limiting part disposed on the anvil base and a second limiting part disposed on the swing member. Under the snap-fit action of the first limiting part and the second limiting part, the swing member can be at least maintained in the initial position or the swing position. The initial position is used at least for tissue separation and blood vessel detachment, and the swing position is used for tissue retraction and separation; when the swing member is in the swing position, the angle between the swing member and the anvil base is greater than the angle between the swing member and the anvil base when the swing member is in the initial position.
2. The anvil according to claim 1, characterized in that, The swing position includes at least two; during the swinging process, the swing member can switch between at least two swing positions relative to the anti-pin base.
3. The anvil according to claim 2, characterized in that, The first limiting part includes a limiting protrusion, and the second limiting part includes a limiting groove. One limiting protrusion corresponds to at least two limiting grooves. One limiting protrusion can be engaged in the limiting grooves at different positions so that the swing member can switch to different positions.
4. The anvil according to claim 2, characterized in that, The first limiting part includes a limiting groove, and the second limiting part includes a limiting protrusion. Each limiting groove corresponds to at least two limiting protrusions. The limiting protrusions at different positions can be engaged in the limiting groove so that the swing member can switch to different positions.
5. The anvil according to claim 3 or 4, characterized in that, The limiting protrusion is located at one end of the anvil base; At least two of the limiting grooves are located at the end opposite to the abutment base of the swing member, and are spaced apart around the swing center of the swing member; Under the action of external force, the limiting grooves at different positions engage with the limiting protrusions to allow the swinging member to switch between the initial position and at least one of the swinging positions, or to allow the swinging member to switch between at least two of the swinging positions.
6. The anvil according to claim 5, characterized in that, The anvil also includes: An elastic element is located between the anvil base and the swing element to allow the limiting protrusion and / or the limiting groove to form an elastic engagement.
7. The anvil according to any one of claims 1-4 and 6, characterized in that, The anvil also includes a deformable cover that covers the outside of the connection between the swing member and the anvil base and deforms as the swing member swings.
8. The anvil according to claim 7, characterized in that, The covering includes a silicone sleeve fitted at the connection between the swinging member and the anvil base.
9. A switching tool, characterized in that, The switching tool includes: Tool body; A connecting portion is disposed on the tool body, the connecting portion including a receiving groove for accommodating at least a portion of the swing member, the connecting portion being used to connect with the swing member of the anvil seat according to any one of claims 1-8 to drive the swing member to swing.
10. A surgical instrument, characterized in that, The surgical instrument includes the anvil according to any one of claims 1-8; or The surgical instrument includes the anvil according to any one of claims 1-8 and the switching tool according to claim 9.