Accessories for surgical instruments and surgical instruments

Abstract

An accessory for a surgical instrument includes a body portion and a clip portion. The body portion includes a base, a distal end portion extending from the base, and a proximal end portion extending from the base, the proximal end portion configured to mate with an end effector. The clip portion is connected to the base and is detachably connectable to the end effector. A surgical instrument including the accessory is also disclosed.

Description

TECHNICAL FIELD

[0001] The present application relates to an auxiliary member for a surgical instrument and a surgical instrument comprising such an auxiliary member. BACKGROUND

[0002] An anastomat is a surgical instrument which can be used to replace traditional hand suture equipment, and has the advantages of fast suturing, easy operation, and few side effects and surgical complications. The anastomat generally comprises an end effector, a shaft assembly, and a handle portion. An additional auxiliary member can be provided on the end effector to facilitate various surgical operations. For example, a beak-shaped dissecting member can be provided on the end effector to facilitate tissue dissection in a narrow space, and then the dissected tissue can be cut and sutured using the anastomat. In existing products, the auxiliary member is generally fixed on the end effector in a non-detachable manner, so that the surgeon may need to replace different anastomats for operation during the surgery, causing inconvenience in use and high surgical cost. SUMMARY

[0003] To solve the above problems, the present application provides a detachable auxiliary member and a surgical instrument comprising such an auxiliary member.

[0004] According to an aspect of the present application, there is provided an auxiliary member for a surgical instrument, the surgical instrument comprising an end effector, the auxiliary member comprising a main body portion and a buckle portion. The main body portion comprises a base portion, a distal end portion extending from the base portion, and a proximal end portion extending from the base portion, the proximal end portion being configured to cooperate with the end effector. The buckle portion is connected to the base portion and is detachably connected to the end effector.

[0005] In some embodiments, opposite sides of the base portion can each be provided with a hole and a first protrusion, and the buckle portion can comprise a connecting portion and a pair of side portions connected to and extending from both ends of the connecting portion, each of the side portions comprising a protruding column and a second protrusion. The protruding column is configured to be rotatably fitted in the hole, and the second protrusion is configured to be buckled with or separated from the first protrusion.

[0006] In some embodiments, the distal end portion can taper from the proximal end to the distal end.

[0007] In some embodiments, an included angle between the distal end portion and the base portion can be 15 degrees or 45 degrees.

[0008] In some embodiments, the proximal end portion can comprise a cross-shaped column, a T-shaped column, a rectangular column, or a polygonal column.

[0009] In some embodiments, the first protrusion and the second protrusion can be triangular prisms.

[0010] In some embodiments, the second protrusion can be configured to slide over the first protrusion by applying an external force to achieve the snap engagement or disengagement between the second protrusion and the first protrusion.

[0011] According to another aspect of the present application, there is provided a surgical instrument comprising: an end effector comprising a butt, the butt comprising a channel extending axially therethrough and a recess provided at a distal end of the butt; and an adjunct according to an embodiment of the present application. A proximal portion of the body portion of the adjunct is configured to be inserted into the channel, and a snap portion of the adjunct is configured to be snapped into the recess to detachably connect the adjunct to the butt of the end effector.

[0012] In some embodiments, the opposing side surfaces of the base portion of the adjunct can each be provided with a hole and a first protrusion, the snap portion of the adjunct comprising a connecting portion and a pair of side portions connected to and extending from two ends of the connecting portion respectively, each of the side portions comprising a protruding post and a second protrusion respectively. The protruding post is configured to be rotatably fitted in the hole, the second protrusion is configured to slide over the first protrusion by applying an external force to achieve the snap engagement or disengagement between the second protrusion and the first protrusion, and the connecting portion of the snap portion is configured to be snapped into the recess.

[0013] In some embodiments, the proximal portion of the body portion can be circumferentially fixedly matched with the shape and size of the channel of the butt. BRIEF DESCRIPTION OF DRAWINGS

[0014] Embodiments of the present application will be further described by way of example with reference to the accompanying drawings, in which:

[0015] Figure 1 is a perspective view of a stapler according to an exemplary embodiment;

[0016] Figure 2 is Figure 1 is a partial enlarged view of a circled portion of the stapler shown, showing an end effector and an adjunct provided on the end effector;

[0017] Figure 3 is a perspective view of an adjunct according to an exemplary embodiment in an assembled state;

[0018] Figure 4 is a perspective view of an adjunct according to an exemplary embodiment in a disassembled state;

[0019] Figure 5 is a perspective view of another embodiment of an adjunct according to an exemplary embodiment;

[0020] Figure 6 is a perspective view of an end effector according to an exemplary embodiment, showing a channel provided in a butt of the end effector;

[0021] Figure 7 is a perspective view of an end effector according to an example embodiment, showing a groove provided on an upper surface of a staple seating deck; and

[0022] Figure 8 is a perspective view of an adjunct according to an example embodiment, showing the cooperation between the body portion and the buckle portion of the adjunct in an installed state. DETAILED DESCRIPTION

[0023] Further features, advantages and effects of the present application will become more apparent and clearer from the following further detailed description of embodiments of the present application made with reference to the accompanying drawings and the specific embodiments. In the following description, spatial and directional terms, such as "upper", "lower", "front", "back", "top", "bottom", "vertical" and "horizontal", can be used to describe the embodiments of the present application, but it should be understood that these terms are used only to facilitate the description of the embodiments shown in the drawings and do not require the actual device to be constructed or operated in a particular orientation. In the following description, the use of terms such as "connected", "coupled", "fixed" and "attached" can mean that two elements or structures are directly connected without other elements or structures therebetween, or that two elements or structures are indirectly connected through intermediate elements or structures, unless otherwise explicitly stated herein. The use of ordinal numbers such as "first", "second", etc. is only to distinguish the elements referred to by the ordinal numbers from each other, and does not have the meaning of order or priority, unless otherwise explicitly stated herein. The terms "proximal" and "distal" used herein are defined with respect to a clinician who manipulates the handle portion of the surgical instrument. The term "proximal" refers to the portion of the component or structure that is closer to the clinician, and the term "distal" refers to the portion of the component or structure that is farther away from the clinician.

[0024] Reference is first made to Figure 1 , Figure 1 is a perspective view of a stapler 1 according to an example embodiment. As shown in Figure 1 , the stapling instrument 1 includes an end effector 10 for performing a surgical operation on a patient, a handle portion 30 held by a user, and a shaft assembly 20 connecting the two. It should be noted that although the description herein is mainly directed to a stapler, the principles of the present application can of course also be applied to other types of surgical instruments in view of the disclosure and teachings of the present application.

[0025] Reference is next made to Figure 2 , Figure 2 is a partial enlarged view of the circled portion of the stapler 1 shown in Figure 1 , showing the end effector 10 and an adjunct 100 provided at the distal end of the end effector 10. As shown in Figure 2As shown, the end effector 10 includes a cartridge seat 12 for receiving staples and an anvil 11 pivotally connected to the cartridge seat 12 at a proximal end thereof. The anvil 11 is pivotable about the cartridge seat 12 between a closed position and an open position by the action of a transmission mechanism in a shaft assembly 20, thereby closing and opening the end effector 10. In alternative embodiments, the cartridge seat 12 can be pivoted relative to the anvil 11. During surgery, it is sometimes necessary to dissect tissue in a narrow space before cutting and stapling the dissected tissue with the stapler. In this case, an auxiliary member 100 can be provided on the end effector 10 to facilitate the dissection operation. The auxiliary member 100 according to the present application will be described in detail below.

[0026] Reference Figure 3 and Figure 4 which respectively show perspective views of the auxiliary member 100 according to an exemplary embodiment in an assembled state and a disassembled state. As shown, the auxiliary member 100 includes a main body portion 110 and a buckle portion 120. The main body portion 110 includes a base portion 111, a distal portion 112 extending distally from the base portion 111, and a proximal portion 113 extending proximally from the base portion 111. In the embodiment shown, the distal portion 112 is tapered from proximal to distal, i.e., is beaked, and is thus narrower and less curved than the distal end of the end effector 10 without the auxiliary member 100, and is thus easier to insert into a narrow space or a tubular incision, thereby reducing the difficulty of the surgical operation. In alternative embodiments, of course, other shapes of the distal portion 112 can be used to meet different needs of the surgical operation. When using the stapler for surgery, for some difficult-to-reach surgical sites, such as blood vessels, the end effector can be inserted into the position of the blood vessels by the guidance of the distal portion 112, thereby facilitating the insertion of the end effector and the clamping of the tissue, and improving the efficiency and convenience of the stapler. The proximal portion 113 is used to cooperate with the stapler 1, and in the embodiment shown, the proximal portion 113 is in the form of a cross-shaped column, and the details of the cooperation of the proximal portion 113 with the stapler 1 will be described below. As shown, the base portion 111 is provided with a hole 114 and a first protrusion 115 in the form of a triangular prism on two opposite sides thereof except the distal end and the proximal end. It will be understood that only one side is visible, and the other side is provided with similar holes and protrusions. The pair of holes 114 and first protrusions 115 are used to cooperate with the buckle portion 120, which will be described in detail below. Figure 4 The visible side is marked with the hole 114 and the first protrusion 115, and the other side is also provided with similar holes and protrusions. The pair of holes 114 and first protrusions 115 are used to cooperate with the buckle portion 120, which will be described in detail below.

[0027] As shown, the buckle portion 120 is in the shape of a handle, including a connecting portion 121 and a pair of side portions 122 connected to and extending from both ends of the connecting portion 121. Each side portion 122 includes an inwardly protruding post 123 at its distal end and a second protrusion 124 in the shape of a triangular prism at its inner side. It is understood that only the side portion 122 on the right is visible, and the other side portion 122 on the left is not visible. However, it is understood that the other side portion 122 on the left is also provided with a similar post and protrusion. Figure 4 The visible side is marked with the post 123 and the second protrusion 124, and the other side which is not visible is also provided with similar posts and protrusions. When the buckle portion 120 is coupled with the main body portion 110, the post 123 can be inserted into the hole 114, so that the buckle portion 120 and the main body portion 110 are rotatably connected together. Pressing the buckle portion 120 downward can also achieve the buckling between the first protrusion 115 and the second protrusion 124, and this will be described in further detail below.

[0028] In the embodiment shown in Figure 3 and Figure 4 , the included angle between the distal end portion 112 and the base portion 111 is 15 degrees, which is defined as the angle between the upper surface of the proximal end portion 112 shown in the figure and the horizontal base portion 111. In the embodiment shown in Figure 5 , another embodiment of the auxiliary tool is shown, Figure 5 the features of the embodiment shown in Figure 3 and Figure 4 are basically the same, except that, Figure 5 the included angle between the distal end portion 112' of the auxiliary tool shown in is 45 degrees, which is suitable for different surgical operation requirements. Since the auxiliary tool according to the present application is detachable, auxiliary tools with different included angles can be replaced during the operation according to the requirements to facilitate the operation.

[0029] Figures 6-8 Next, the coupling mode between the auxiliary tool and the end effector according to the exemplary embodiment will be described in detail with reference to

[0030] As shown in Figure 6 , the anvil 11 of the end effector 10 includes a passage 13 extending through its main body, and the passage 13 corresponds in shape to the cross-shaped column of the proximal end portion 113 of the main body 110 of the auxiliary tool 100, so that the proximal end portion 113 can be received in the passage 13. It is understood that other shapes of the proximal end portion 113 and the passage 13 can also be used as long as they can be coupled with each other, for example, in alternative embodiments, the proximal end portion 113 can also be in the shape of a T-shaped column, a rectangular column or a polygonal column, and the passage 13 is shaped and sized to match the proximal end portion 113. As shown in Figure 7As shown, the distal end of the surface of the staple cartridge seat 12 facing away from the anvil seat 11 comprises a groove 14 adapted to receive the connecting portion 121 of the snap portion 120 of the auxiliary 100. It can be envisaged by those skilled in the art that similar structures as described above can also be provided at the distal end of other types of surgical instruments for fitting the auxiliary according to the present application.

[0031] Before the auxiliary 100 is installed to the end effector 10, the snap portion 120 has already been fixed to the body portion 110 by the cooperation between the protrusion 123 of the snap portion 120 and the hole 114 of the body portion 110, as described before, thus completing the assembly of the auxiliary 100 itself. In installing the auxiliary 100, the operator first inserts the proximal end portion 113 into the channel 13 of the anvil seat 11, and then presses the snap portion 120 downward to press the connecting portion 121 of the snap portion 120 into the groove 14 at the distal end of the anvil seat 11. As shown, Figure 8 During the pressing process, the first protrusion 115 and the second protrusion 124 abut against each other, and the second protrusion 124 is pressed to slide past the first protrusion 115 and below the first protrusion 115 to achieve the cooperation between the two, thus buckling the auxiliary 100 to the anvil seat 11 by the snap portion 120. In disassembling, a force is applied to take the connecting portion 121 out of the groove 14, so that the second protrusion 124 slides back above the first protrusion 115 under the action of the external force, and the proximal end portion 113 is withdrawn from the channel 13 of the anvil seat 11, thus completing the disassembly of the auxiliary 100. The above-mentioned installation and disassembly process is very simple, which helps the user to choose whether to use the auxiliary or replace different auxiliaries according to different needs during the operation.

[0032] In summary, an auxiliary for a surgical instrument and a surgical instrument comprising such an auxiliary are provided. The auxiliary according to the present application is detachably installed to the surgical instrument, so that whether to use or use different types of auxiliaries can be chosen according to the needs to facilitate the surgical operation. The auxiliary according to the present application also has the advantages of simple structure, easy disassembly, etc.

[0033] Although the present application has been described with reference to the above embodiments, it will be understood by those skilled in the art that various changes can be made and equivalents can be substituted for elements thereof without departing from the concept and scope of the present application as defined in the appended claims. Although this specification contains many specifics, these should not be construed as limiting the scope of the application but as merely describing a few exemplifying embodiments thereof. The scope of the application is defined by the appended claims and their equivalents, without being limited to the embodiments described above.

Claims

1. An accessory for a surgical instrument, the surgical instrument comprising an end effector, characterized in that, The auxiliary components include: The main body includes: base The distal end extending from the base, and A proximal end extending from the base, the proximal end being configured to cooperate with the end effector; and A latching part, which is connected to the base and detachably connected to the end effector. The base has holes and first protrusions on opposite sides. The latching part is handle-shaped and includes a connecting part and a pair of side parts that are connected to and extend from the two ends of the connecting part. Each side part includes a protruding post and a second protrusion. The protruding post is configured to rotatably engage with the hole, and the second protrusion is configured to engage or disengage with the first protrusion. The distal end is tapered from the proximal end to the distal end, and the second protrusion is configured to slide over the first protrusion by applying an external force to achieve engagement or disengagement between the second protrusion and the first protrusion.

2. The auxiliary component as described in claim 1, characterized in that, The angle between the distal end and the base is 15 degrees or 45 degrees.

3. The auxiliary component as described in claim 1, characterized in that, The proximal end includes a cross-shaped column, a T-shaped column, or a rectangular column.

4. The auxiliary component as described in claim 1, characterized in that, The first protrusion and the second protrusion are triangular prisms.

5. A surgical instrument, characterized in that, include: An end effector includes a pin seat, the pin seat including a channel extending through it along its axial direction and a groove disposed at a distal end of the pin seat; as well as The auxiliary member as claimed in any one of claims 1-4, wherein the proximal end portion of the main body of the auxiliary member is configured to be inserted into the channel, and the snap-fit ​​portion of the auxiliary member is configured to engage in the groove to detachably connect the auxiliary member to the pin seat of the end effector.

6. The surgical instrument as described in claim 5, characterized in that, The base of the auxiliary component has holes and first protrusions on opposite sides. The snap-fit ​​portion of the auxiliary component includes a connecting portion and a pair of side portions that are connected to and extend from the two ends of the connecting portion. Each side portion includes a protrusion and a second protrusion. The protrusion is configured to rotatably engage in the hole. The second protrusion is configured to slide past the first protrusion by applying an external force to achieve a snap-fit ​​between the second protrusion and the first protrusion. The connecting portion of the snap-fit ​​portion is configured to engage in the groove.

7. The surgical instrument as described in claim 6, characterized in that, The proximal end of the main body matches the shape and size of the channel of the anvil and is circumferentially fixed.

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