Self-locking stapler assembly

Abstract

A self-locking staple assembly includes an actuating device and a staple, wherein the actuating device includes: an elastic compression deformation component; a sleeve including an arc-shaped portion and having a side wall, a cavity surrounded by the side wall, and a first sleeve end and a second sleeve end, wherein an opening is provided on the sleeve side wall, and the opening divides the cavity into a first space and a second space; a stopper; an actuating rod configured to be detachably connected to the stopper through the opening, wherein when not fired, the actuating rod is connected to the stopper, the stopper is located in a blocking position, and the elastic compression deformation component is accommodated in the first space and maintained in the compression deformation state; when fired, the stopper and the actuating rod are separated from each other, so that the stopper leaves the blocking position to release the elastic compression deformation component, thereby providing a thrust for the staple. A staple assembly group is also provided.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to a self-locking stapler assembly. Background Art

[0002] In surgical treatment, various staplers are widely used, such as skin staplers, digestive tract (esophagus, gastrointestinal, etc.) circular staplers, rectal staplers, circular hemorrhoid staplers, circumcision staplers, vascular staplers, hernia staplers, lung cutting staplers, etc. These staplers are medical devices that replace traditional manual suturing. Due to the development of modern science and technology and the improvement of manufacturing technology, various staplers currently used in clinical practice have the advantages of fast and accurate suturing, simple operation, less bleeding, and few side effects and surgical complications. Sometimes, they also make it possible to remove tumors that were previously unresectable. Therefore, they are very popular and respected by clinical surgeons at home and abroad.

[0003] Typically, staplers use staples made of materials such as medical stainless steel, titanium, titanium alloys, biodegradable magnesium alloys, etc. to sew. Summary of the invention

[0004] At least one embodiment of the present disclosure provides a self-locking staple assembly, which includes an actuating device and a staple, wherein the actuating device includes: an elastic compression deformation component; a sleeve, wherein the sleeve includes a hollow arc-shaped portion, and has a side wall, a cavity surrounded by the side wall, and a first sleeve end that is at least partially closed and a second sleeve end that is at least partially open, an opening is provided on the side wall of the sleeve, and the opening divides the cavity into a first space located between the first sleeve end and the opening and a second space located between the opening and the second sleeve end, the first space is configured to accommodate the elastic compression deformation component, and the second space is configured to accommodate the staple; a stopper, wherein the stopper is configured to be stopped when the staple assembly is in an unstruck state The trigger rod is located at a blocking position in the opening in the sleeve when the staple assembly is in the unfired state, and can slide in the cavity of the sleeve after the staple assembly is fired; the actuating rod is configured to be detachably connected to the stopper through the opening, wherein, when the staple assembly is in the unfired state, the actuating rod is connected to the stopper, the stopper is in the blocking position, the elastic compression deformation component is accommodated in the first space in the sleeve in a compressed deformation state, and is blocked by the stopper so that the elastic compression deformation component is maintained in the compressed deformation state; when the staple assembly is fired, the stopper and the actuating rod are separated from each other, so that the stopper leaves the blocking position to release the elastic compression deformation component, thereby allowing the elastic compression deformation component to at least partially recover from the compressed deformation state, thereby providing a thrust for the staples.

[0005] In some examples, the arcuate portion of the sleeve is greater than or equal to a semi-circular ring.

[0006] In some examples, the actuating device further comprises a stop connector configured to detachably connect the stop member and the actuating rod; when the staple assembly is in an unfired state, the stop connector is configured to be connected to the stop member and extend to the outside of the sleeve through the opening, and the actuating rod is disposed outside the sleeve and connected to the stop connector; when the staple assembly is fired, the stop connector is separated from the stop member and one of the actuating rod, and the stop member leaves the blocking position to release the elastic compression deformation component.

[0007] In some examples, the stop connector is fixedly connected to the stop member and detachably connected to the actuating rod, the opening of the sleeve is a slit, the slit has a first slit end close to the first sleeve end and a second slit end close to the second sleeve end, the direction of the slit is basically consistent with the deformation recovery direction of the elastic compression deformation component; when the staple assembly is in an unfired state, the stop member is located at the first slit end, when the staple assembly is fired, the stop connector is separated from the actuating rod, the stop member leaves the blocking position to release the elastic compression deformation component, and slides along the cavity in the sleeve under the action of the deformation recovery force and drives the stop connector to slide along the slit.

[0008] In some examples, a hole is provided on one end of the stop connector located outside the sleeve, and the hole has a first thread; the actuating rod has a second thread that can engage with the first thread; the stop connector and the actuating rod are detachably connected through the engagement of the first thread and the second thread.

[0009] In some examples, the stop connector is detachably connected to the stop member and fixedly connected to the actuating rod; the opening of the sleeve is a through hole; when the staple assembly is in an unfired state, the stop member is located at the through hole; when the staple assembly is fired, the stop connector is separated from the stop member and exits the sleeve along the through hole, and the stop member leaves the blocking position to release the elastic compression deformation component and slides along the cavity in the sleeve under the action of the deformation recovery force.

[0010] In some examples, the stapler has a staple cap and a staple leg connected to the staple cap and having a pointed end, wherein a backstop is provided at the tip of the staple leg; the staple cap is close to the stopper, and the tip of the staple leg is close to the second sleeve end.

[0011] In some examples, the elastic compression deformation component includes one of a compression spring, an elastic resin member, a Z-shaped elastic member, an accordion-shaped elastic member, or a lantern frame-shaped elastic member having two end surfaces connected by a plurality of elastic rods or elastic sheets.

[0012] In some examples, the sleeve is a hollow arc-shaped cylinder and further includes a space at the first sleeve end for accommodating the tips of the staple legs of the staples after firing.

[0013] In some examples, the self-locking staple assembly further includes a sensor or a lock, wherein the sensor or the lock is disposed in a space for accommodating the tip of the staple leg of the staple after firing.

[0014] In some examples, the sleeve is a hollow question mark-shaped tube, which includes an arc-shaped portion and a handle portion connected to the arc-shaped portion; the arc-shaped portion of the question mark-shaped tube is used to accommodate the staples, and the length of the handle portion of the question mark-shaped tube is not less than the length of the elastic compression deformation component at the maximum compression deformation degree and not greater than the length of the elastic compression deformation component in the non-deformed state, and is used to accommodate the elastic compression deformation component in the compression deformation state.

[0015] In some examples, the non-return structure is a barb.

[0016] At least one embodiment of the present disclosure further provides a staple assembly set, which includes a plurality of self-locking staple assemblies as described above, wherein the plurality of staple assemblies share a common actuating rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure, but are not intended to limit the present disclosure.

[0018] Figure 1 is a schematic diagram of an elastic compression deformation component that can be used in at least one embodiment according to the present disclosure;

[0019] Figure 2 is a schematic diagram of a stapler assembly according to one embodiment of the present disclosure;

[0020] Figure 3 is a schematic diagram of a stapler assembly according to another embodiment of the present disclosure;

[0021] Figure 4 is a schematic diagram of a stapler assembly according to another embodiment of the present disclosure;

[0022] Figure 5 FIG. 4 is a schematic diagram of a stapler assembly according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure. The shapes and sizes of the various parts in the drawings do not reflect the actual proportions of the various parts, but only schematically illustrate the contents of the present disclosure.

[0024] Unless otherwise defined, the technical terms or scientific terms used herein should be understood by people with ordinary skills in the field to which the present disclosure belongs. "First", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, "include" or "include" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] Staplers are medical devices that replace manual suturing. Their main working principle is to use staplers to separate or staple tissues, similar to staplers. According to different application scopes, staplers can be mainly divided into skin staplers, digestive tract (esophagus, gastrointestinal, etc.) circular staplers, rectal staplers, circular hemorrhoid staplers, circumcision staplers, vascular staplers, hernia staplers, lung cutting staplers, etc. Compared with traditional manual suturing, stapler suturing has at least the following advantages: simple and convenient operation, saving operation time, less bleeding; disposable use to avoid cross infection; tight and accurate suturing with staplers, moderate tightness; few side effects and effective reduction of surgical complications, etc., so it has been more and more widely used in surgical operations.

[0026] For example, in laparoscopic surgery, endoscopic staplers are widely used clinically. During the operation, the end effector of the endoscopic stapler enters the patient's body through a puncture device to complete actions such as tissue clamping, staple suturing, and resection.

[0027] A stapler used in a cavity-entry stapler may generally be a double-legged (U-shaped) stapler. Such a stapler generally includes two staple legs connected by a staple crown, and is generally fired by a staple pusher structure (actuator) including a staple pusher rod, a staple pusher slider, and a staple pusher sheet. The firing process requires that the lateral thrust provided by the staple pusher rod be converted into a longitudinal thrust on the staple pusher sheet through the inclined surface of the guide wall on the staple pusher slider, thereby pushing the staple through the tissue to be sutured, and causing the two staple legs of the staple to deform in cooperation with the staple anvil to form a B-shaped staple.

[0028] This method of firing and pushing nails and transforming them into nails requires a relatively complex nail pushing structure, which limits the end effector of the cavity-entering stapler and its internal structural dimensions (for example, the size of the nail magazine, the size of the staples, the size of the nail pushing sheet, the size of the actuator, etc.). In addition, due to the direction conversion of the nail pushing force in the above-mentioned method of firing and pushing nails, a part of the force will be lost, and this part of the lost force is likely to act on the nail magazine shell. In order to prevent the force that may act on the nail magazine shell due to the loss of the direction conversion of the nail pushing force from causing accidental damage to the nail magazine shell, the cavity-entering stapler using the above-mentioned nail pushing method has very high requirements on the material strength of the end effector, especially the shell of the nail magazine used therein. Therefore, the structure of this cavity-entering stapler is relatively complex, the production process is relatively difficult, and the material cost and process cost are relatively high.

[0029] To solve the above and other problems, the inventors have noticed that a new staple assembly can be designed by using the deformation recovery force of the elastic compression deformation component to provide a staple pushing force to drive the staples through the tissue to be sutured and using a self-locking stapler. This new staple assembly no longer needs to design and use a relatively complex staple pushing structure including a staple pushing rod, a staple pushing slider and a staple pushing sheet in the end effector of the cavity-feeding stapler, so it can break through the structural size limitations of the end effector and the puncture device to a certain extent. Moreover, the new staple assembly provided by at least one embodiment of the present disclosure will not cause thrust loss that may act on the staple cartridge housing, and does not need to be matched with the staple anvil to form a staple, so the material requirements for the end effector of the stapler, especially the staple cartridge housing and the staple anvil used therein, can be reduced. Therefore, the new staple assembly provided by at least one embodiment of the present disclosure can simplify the transmission structure of the stapler, reduce the material requirements of at least some components in the stapler, and thus reduce the production difficulty and production cost of the stapler.

[0030] At least one embodiment of the present disclosure provides a self-locking staple assembly and a staple assembly set including a plurality of staple assemblies.

[0031] At least one embodiment of the present disclosure provides a self-locking staple assembly, which includes an actuating device and a staple, wherein the actuating device includes: an elastic compression deformation component; a sleeve, wherein the sleeve includes a hollow arc-shaped portion, and has a side wall, a cavity surrounded by the side wall, and a first sleeve end that is at least partially closed and a second sleeve end that is at least partially open, an opening is provided on the side wall of the sleeve, and the opening divides the cavity into a first space located between the first sleeve end and the opening and a second space located between the opening and the second sleeve end, the first space is configured to accommodate the elastic compression deformation component, and the second space is configured to accommodate the staple; at least one staple is configured to be accommodated in the second space of the sleeve; a stopper, wherein the stopper is provided The invention relates to a device for producing a stapler that is arranged at a blocking position in the opening in the sleeve when the stapler assembly is in an unfired state, and can slide in the cavity of the sleeve after the stapler assembly is fired; an actuating rod is configured to be detachably connected to a stopper through the opening, wherein, when the stapler assembly is in an unfired state, the actuating rod is connected to the stopper, the stopper is in a blocking position, the elastic compression deformation component is accommodated in a first space in the sleeve in a compressed deformation state, and is blocked by the stopper so that the elastic compression deformation component is maintained in the compressed deformation state; when the stapler assembly is fired, the stopper and the actuating rod are separated from each other, so that the stopper leaves the blocking position to release the elastic compression deformation component, thereby causing the elastic compression deformation component to at least partially recover from the compressed deformation state, thereby providing a thrust for the stapler.

[0032] In at least some examples of the above embodiments, the elastic compression deformation component is used to recover its deformation by removing the stopper that blocks it (i.e., removing the external load) when firing, and then the restoring force generated by the deformation recovery provides a push force for pushing the staple through the tissue to be sutured. The elastic compression deformation component can be formed by an elastic compression deformation material or an elastic compression deformation structure, which is deformed under the action of an external load, and the deformation completely disappears and completely restores its original shape and size after the external load is removed. For example, the elastic compression deformation material may include certain resins or natural materials with elastic compression deformation properties, such as but not limited to thermoplastic elastomer (TPE), thermoplastic polyurethane (TPU), thermoplastic polyester elastomer (TPEE), etc. The elastic compression deformation material can be made into, for example, a block elastic member or a hollow cylindrical elastic member. For another example, the elastic compression deformation structure may include some structures with elastic compression deformation properties, such as compression springs, Z-shaped elastic members, accordion-shaped elastic members, lantern frame-shaped elastic members, etc. The elastic compression deformation structure may be formed of materials such as but not limited to metal, plastic or ceramic.

[0033] Figure 1 Schematic diagram of several examples of elastic compression deformation components that can be used in an actuating device for firing staples in at least one embodiment of the present disclosure, including but not limited to: (a) compression springs, (b) elastic resin parts, (c) Z-shaped elastic parts, (d) accordion-shaped elastic parts, and (e) lantern frame-shaped elastic parts.

[0034] For example, a compression spring is a helical spring that bears a positive pressure, and the helical spring is formed by winding a plurality of turns of spring wire along a fixed wire diameter and equal pitch. When the compression spring is not subjected to an external load, there is a certain gap between the turns of the compression spring. When subjected to an external load, the compression spring contracts and deforms, so that the gap between the turns is reduced or even disappears, so that the compression spring is in a compressed deformation state and stores deformation energy; and when the external load is removed, the stored deformation energy is released, and the compression spring at least partially recovers from its compressed deformation state to provide a thrust in the direction of its deformation recovery. For example, the cross-section of the spring wire of the compression spring may be circular, rectangular or other shapes; and the shape of the compression spring may be cylindrical, conical, convex and concave, as well as a small amount of non-circular shapes, etc.

[0035] Further, for example, the compression spring may be made of an elastic material that is compatible with the human body or at least harmless to the human body. For example, the material of the compression spring may include, for example, metal materials such as medical spring steel and other medical elastic alloys; or may include non-metallic materials such as medical nanoceramics, medical hard plastics or resins. Further, at least a portion of the compression spring may also have a passivation layer, plating or coating that is compatible with the human body or at least harmless to the human body. The embodiments of the present disclosure are not limited to this.

[0036] For example, the elastic resin piece may be a block-shaped elastic piece formed of an elastic resin that can be compressed, deformed and restored. When subjected to an external load, the elastic resin piece shrinks and deforms so that its length along the direction of the external load application becomes shorter, so that the elastic resin piece is in a compressed deformation state and stores deformation energy; and when the external load is removed, the deformation energy stored in the elastic resin piece is released, and the elastic resin piece at least partially recovers from its compressed deformation state to provide a thrust in the direction of its deformation recovery. For example, the cross-section of the elastic resin piece may be circular, elliptical, rectangular or other shapes; and the shape of the elastic resin piece may be cylindrical, conical, convex, concave, etc.

[0037] Further, for example, the elastic resin piece may be made of an elastic material that is compatible with the human body or at least harmless to the human body. For example, the material of the elastic resin piece may include, for example, medical thermoplastic polyethylene (PE) resin, medical thermoplastic polyurethane resin (PU) or medical thermoplastic polyester elastomer (TPEE), etc. Further, the elastic resin piece may be a foamed resin formed by, for example, including but not limited to the above, for example, medical thermoplastic polyethylene (PE) resin, medical thermoplastic polyurethane resin (PU) or medical thermoplastic polyester elastomer (TPEE), etc. The embodiments of the present disclosure are not limited to this.

[0038] For example, the Z-shaped elastic member may be an elastic member, for example, formed of an elastic material and having a shape similar to the letter "Z", and the elastic member has end pieces located at both ends and an intermediate oblique piece located between the two end pieces and connecting them. When subjected to an external load, the Z-shaped elastic member is compressed so that the angle between the intermediate oblique piece and the two end pieces becomes smaller and / or the intermediate oblique piece is bent, thereby shortening the distance between the two end pieces, thereby placing the Z-shaped elastic member in a compressed deformation state and storing deformation energy; and when the external load is removed, the deformation energy stored in the Z-shaped elastic member is released, and the Z-shaped elastic member at least partially recovers from its compressed deformation state to provide a thrust in the direction of its deformation recovery. For example, the end pieces of the Z-shaped elastic member may be circular, elliptical, semicircular, rectangular or other shapes; and the intermediate oblique piece of the Z-shaped elastic member may be, for example, roughly rectangular, etc. Further, for example, the material of the Z-shaped elastic member may be a metal material that is compatible with the human body or at least harmless to the human body, such as medical stainless steel, etc. Furthermore, at least a portion of the Z-shaped elastic member may also have a passivation layer, a plating layer or a coating layer that is compatible with or at least harmless to the human body. The embodiments of the present disclosure are not limited to this.

[0039] For example, the accordion-shaped elastic member may be an elastic member having a shape similar to that of an accordion leaf, and the elastic member is formed by connecting a plurality of "Z"-shaped components end to end. When subjected to an external load, the accordion-shaped elastic member contracts and deforms so that the gap between the two end surfaces of at least one of the plurality of "Z"-shaped components is reduced or even disappears, so that the accordion-shaped elastic member is in a compressed deformation state and stores deformation energy; and when the external load is removed, the stored deformation energy is released, and the accordion-shaped elastic member at least partially recovers from its compressed deformation state to provide a thrust in the direction of its deformation recovery.

[0040] Further, for example, the material of the accordion leaf-shaped elastic member may be a metal material that is compatible with the human body or at least harmless to the human body, such as medical stainless steel, etc.; or it may be a non-metal material that is compatible with the human body or at least harmless to the human body, such as medical plastic, etc. Further, at least a portion of the accordion leaf-shaped elastic member may also have a passivation layer, plating layer or coating layer that is compatible with the human body or at least harmless to the human body. The embodiments of the present disclosure are not limited to this.

[0041] For example, the lantern frame-shaped elastic member may be an elastic member having a shape similar to that of a lantern frame, and the elastic member is composed of two substantially parallel end faces and a plurality of elastic rods or elastic sheets connecting the two end faces. When subjected to an external load, the plurality of elastic rods or elastic sheets in the lantern frame-shaped elastic member bends so that the distance between the two end faces in the elastic member is reduced, thereby placing the lantern frame-shaped elastic member in a compressed deformation state and storing deformation energy; and when the external load is removed, the deformation energy stored in the lantern frame-shaped elastic member is released, and the lantern frame-shaped elastic member at least partially recovers from its compressed deformation state to provide a thrust in the direction of its deformation recovery.

[0042] Further, for example, the material of the lantern frame-shaped elastic member may be a metal material that is compatible with the human body or at least harmless to the human body, such as medical stainless steel, chromium, chromium alloy, cobalt alloy, etc.; or it may be a non-metal material that is compatible with the human body or at least harmless to the human body, such as medical plastic, etc. Further, the end surface of the lantern frame-shaped elastic member and / or at least a portion of the elastic rod or elastic sheet may also have a passivation layer, plating or coating that is compatible with the human body or at least harmless to the human body. The embodiments of the present disclosure are not limited to this.

[0043] Figure 1 Several elastic compression deformation components that can be used in the staple assembly of at least one embodiment of the present disclosure are shown, however, the embodiments of the present disclosure are not limited thereto, and other elastic compression deformation materials and / or elastic compression deformation structures that can change shape under external loads to store deformation energy and then at least partially restore their original shape after the external load is removed to release deformation energy and thereby provide thrust can also be used in the embodiments of the present disclosure, which are not listed one by one here.

[0044] In some examples of the above embodiments, the sleeve is a hollow arc-shaped sleeve, and further includes a space at the first sleeve end for accommodating the tips of the staple legs of the staples after firing.

[0045] In some examples of the above embodiments, the self-locking staple assembly further includes a sensor or a lock, wherein the sensor or the lock is disposed in a space for accommodating the tip of the staple leg of the staple after firing.

[0046] In some examples of the above embodiments, the sleeve is a hollow question mark-shaped tube, which includes an arc-shaped portion and a handle portion connected to the arc-shaped portion, the arc-shaped portion of the question mark-shaped tube is used to accommodate the staples, the length of the handle portion of the question mark-shaped tube is not less than the length of the elastic compression deformation component at the maximum compression deformation degree and is not greater than the length of the elastic compression deformation component in a non-deformed state, and is used to accommodate the elastic compression deformation component in a compression deformation state.

[0047] In some examples of the above embodiments, the non-return structure is a barb.

[0048] According to at least one embodiment of the present disclosure, a staple assembly set is further provided. The staple assembly set includes a plurality of staple assemblies according to at least one embodiment of the present disclosure, wherein the plurality of staple assemblies share a common actuating rod.

[0049] The following will describe several embodiments of the present disclosure in conjunction with the accompanying drawings. For simplicity, in the following embodiments, the elastic compression deformation component is a compression spring and the non-return device is a barb as an example for description, but the embodiments of the present disclosure are not limited to these examples.

[0050] Figure 2 FIG. 2 is a schematic diagram of a self-locking stapler assembly 200 according to an embodiment of the present disclosure. Figure 2 As shown, the stapler assembly 200 includes a compression spring 201, a sleeve 202, a stopper 203, an actuating rod 205 and a stapler 206, wherein the compression spring 201, the sleeve 202, the stopper 203 and the actuating rod 205 together constitute an actuating device.

[0051] The actuating rod 205 is detachably connected to the stopper 203. Figure 2 In the illustrated embodiment, the actuating device further includes a stopper connecting member 204, through which the actuating rod 205 is detachably connected to the stopper 203. For example, the actuating rod 205 is fixedly connected to the stopper connecting member 204, and the stopper connecting member 204 is detachably connected to the stopper 203, or the actuating rod 205 is detachably connected to the stopper connecting member 204, and the stopper connecting member 204 is fixedly connected to the stopper 203.

[0052] The sleeve 202 is a hollow arc-shaped cylinder with a circular cross section, which has a side wall and a cavity surrounded by the side wall. One end of the sleeve 202 is partially closed and the other end is open. An opening is provided on the side wall of the sleeve 202, for example, the opening is a slit 207 extending along the axial direction of the sleeve 202, and the direction of the slit 207 is substantially consistent with the deformation recovery direction of the compression spring 201. The slit 207 has a first slit end 207a close to the stopper 203 and a second slit end 207b close to the open end of the sleeve 202. The first slit end 207a divides the cavity inside the sleeve 202 into two relatively independent parts, that is, a first space 202a located between the closed end of the sleeve 202 and the first slit end 207a of the slit 207 and a second space 202b located between the open end of the sleeve 202 and the first slit end 207b of the slit 207.

[0053] The stopper 203 is accommodated in the sleeve 202 and is located at a position corresponding to the first slit end 207a of the slit 207. One end of the stopper connector 204 is located in the sleeve 202 and fixedly connected to the stopper 203, and the stopper connector 204 extends to the outside of the sleeve 202 through the slit 207. The stopper connector 204 is detachably connected to the actuating rod 205. For example, a hole 204a is provided at one end of the stopper connector 204 located outside the sleeve 202, a first thread is provided on the inner wall of the hole 204a, and a second thread is provided on the actuating rod 205, and the first thread can be engaged with the second thread to detachably connect the stopper connector 204 to the actuating rod 205.

[0054] The stapler 206 has a staple head and a staple leg with a pointed end, and a barb is provided at the tip of the staple leg.

[0055] like Figure 2 As shown, when the actuator 200 is in an unfired state, the compression spring 201 is accommodated in a first space 202a in the sleeve 202 and is blocked by the stopper 203 to keep the compression spring 201 in a compressed and deformed state. The stapler 206 is accommodated in a second space 202b in the sleeve 202.

[0056] When the actuator 200 is fired, the actuator rod 205 is separated from the stopper connector 204, so that the stopper 203 leaves the blocking position to release the compression spring 201, so that the compression spring 201 is at least partially restored from the compression deformation state through elastic compression deformation recovery, and then the compression deformation recovery force provides a thrust to push the stopper 203 to slide in the cavity of the sleeve 202, thereby causing the stopper 203 to push the stapler 206 to be ejected from the open end of the sleeve 202 and pass through the tissue to be sutured (not shown). In the process of the stopper 203 sliding along the cavity of the sleeve 202, the stopper connector 204 is driven by the stopper 203 to slide along the slit 207.

[0057] exist Figure 2 In the embodiment shown, the material and shape of the compression spring 201 are similar to Figure 1 The compression spring shown in is similar and will not be described again here.

[0058] exist Figure 2 In the illustrated embodiment, the sleeve 202 may be formed of a rigid material that is compatible with or at least harmless to the human body. For example, the material of the sleeve 202 may include, for example, medical stainless steel, titanium, titanium alloy, cobalt alloy and other metal materials; or medical ceramics, hard plastics and other non-metallic materials. Further, at least a portion of the inner surface and / or outer surface of the sleeve 202 may also have a passivation layer, plating or coating that is compatible with or at least harmless to the human body. The embodiments of the present disclosure are not limited to this.

[0059] exist Figure 2 In the illustrated embodiment, the stopper 203 is used to uniformly apply the deformation recovery force generated when the compression spring 201 is at least partially recovered from the compression deformation state to the stopper 203, thereby making the thrust force on the staple 206 uniform. In some examples, the stopper 203 may have any shape that meets the following conditions: the straight-line distance between any two points on its periphery is not greater than the inner diameter of the sleeve 202, thereby enabling the stopper 203 to slide in the inner cavity of the sleeve 202. For example, the shape of the stopper 203 may be a circle, a rectangle, a triangle, etc. that meets the above conditions. Further, for example, the stopper 203 may be a circle with a diameter slightly smaller than the inner diameter of the sleeve 202. The embodiments of the present disclosure are not limited to this.

[0060] In some examples, the stopper 203 may be formed of a rigid material that is compatible with or at least harmless to the human body. For example, the material of the stopper 203 may include, for example, medical stainless steel, titanium, titanium alloy, cobalt alloy and other metal materials; or medical ceramics, hard plastics and other non-metallic materials. Furthermore, at least a portion of the inner surface and / or outer surface of the stopper may also have a passivation layer, plating or coating that is compatible with or at least harmless to the human body. In at least one example, the material of the stopper 203 may be the same as or different from the material of the sleeve 202. The embodiments of the present disclosure are not limited to this.

[0061] exist Figure 2 In the illustrated embodiment, the stopper connector 204 is used to indirectly connect the stopper 203 and the actuating rod 205 together, so as to keep the stopper 203 in a blocking position when the staple assembly 200 is in an unfired state, and to allow the stopper 203 to leave the blocking position by separating from the actuating rod 205 when the staple assembly 200 is fired. In some examples, the stopper connector 204 may have any shape that meets the following conditions: the size of at least a portion of the stopper connector 204 is small enough to extend to the outside of the sleeve 202 through the slit 207, and the size of one end of the stopper connector 204 located outside the sleeve 202 is large enough to be provided with a hole 204a with a first thread, and the first thread can be engaged with the second thread on the actuating rod 205. In some examples, the shape of the stopper connector 204a may be a rod, sheet, strip, chain, etc. with an expanded portion at one end that meets the above conditions. The embodiments of the present disclosure are not limited to this.

[0062] In some examples, the stop connector 204 may be formed of a rigid or flexible material that is compatible with or at least harmless to the human body. For example, the material of the stop connector 204 may include, for example, medical stainless steel, titanium, titanium alloy, cobalt alloy and other metal materials; or medical ceramics, plastics and other non-metallic materials. Furthermore, at least a portion of the inner surface and / or outer surface of the stop connector 204 may also have a passivation layer, plating or coating that is compatible with or at least harmless to the human body. In at least one example, the material of the stop connector 204 may be the same as or different from the material of the sleeve 202 and / or the stop member 203. The embodiments of the present disclosure are not limited to this.

[0063] exist Figure 2 In the illustrated embodiment, the actuator rod 205 may be at least partially a linear rod body and may be moved toward the distal end or the proximal end under the control of a control device (not shown), where the distal end or the proximal end is relative to the control device, which is installed, for example, in the handle of a stapler using the actuator device 200.

[0064] In some examples, the actuating rod 205 may be made of a rigid or flexible material that is compatible with or at least harmless to the human body. For example, the material of the actuating rod 205 may include, for example, medical stainless steel, titanium, titanium alloy, cobalt alloy, ceramic, hard plastic and other rigid materials; or may include, for example, flexible plastic that can be bent and deformed. Further, at least a portion of the inner surface and / or outer surface of the actuating rod 205 may also have a passivation layer, plating or coating that is compatible with or at least harmless to the human body. The embodiments of the present disclosure are not limited to this.

[0065] exist Figure 2 In the illustrated embodiment, the stop connector 204 and the actuating rod 205 are detachably connected by the engagement between the first thread in the hole 204a at one end of the stop connector 204 and the second thread on the actuating rod 205. When the stapler 200 is fired, the actuating rod 205 rotates and retreats under the control of a control device (not shown), releasing the engagement between the first thread and the second thread, thereby separating the actuating rod 205 from the stop connector 204, thereby precisely controlling the movement of the actuating rod 205. However, in some other embodiments of the present disclosure, the stop connector 204 and the actuating rod 205 may also be connected by making the actuating rod 205 detachably engaged in the hole 204a at one end of the stop connector 204. When the stapler 200 is fired, the actuating rod 205 retreats under the control of the control device, releasing the engagement between the actuating rod 205 and the hole 204a, thereby separating the actuating rod 205 from the stop connector 204. The present disclosure does not limit the specific implementation of the detachable connection.

[0066] exist Figure 2 In the illustrated embodiment, the staple 206 has a staple cap and a staple leg with a pointed end. The shape and size of the staple cap are set to allow it to slide inside the sleeve 202, and the tip of the staple leg has a barb extending from the tip toward the staple cap. Figure 2 As shown, the staple legs of the staple 206 are arc-shaped and are accommodated in the arc-shaped sleeve 202 of the staple 200. When the staple assembly 200 is fired, the compression spring 201 is at least partially restored from its compressed deformation state, and the resulting compression deformation recovery force pushes the stopper 203 to slide in the arc-shaped sleeve 202, thereby pushing the staple 206 through the tissue to be sutured. After firing, the staple cap prevents the staple 206 from completely penetrating and coming out of the tissue to be sutured, and the barbs prevent the staple 206 from withdrawing from the tissue to be sutured or falling off from the tissue to be sutured, thereby making the staple 206 self-locking into a staple after firing.

[0067] In some examples, the staples 206 may be formed of a material that is compatible with or at least harmless to the human body. For example, the material of the staples 206 may include medical stainless steel, titanium, titanium alloy, biodegradable magnesium alloy, and the like. Further, for example, at least a portion of the surface of the staples 206 may have a passivation layer, plating layer, or coating layer that is compatible with or at least harmless to the human body. The embodiments of the present disclosure are not limited to this.

[0068] In some examples, the nail cap of the staple 206 may be any shape that is larger than the cross section of the nail leg but smaller than the cross section of the inner cavity of the sleeve 202, such as a circle, a rectangle, or a triangle. Alternatively, the nail cap may be a mosquito coil-shaped structure formed by bending a metal wire integrally formed with the nail leg. The embodiments of the present disclosure are not limited to this.

[0069] In some examples, the barb of the staple 206 is a barb-shaped structure extending from the tip of the staple leg toward the nail cap and gradually away from the staple leg. For example, the angle between the barb and the staple leg may be no greater than, for example, about 60 degrees, for example, no greater than about 55 degrees, no greater than about 50 degrees, no greater than about 45 degrees, or no greater than about 40 degrees. Further, for example, the angle between the barb and the staple leg may be no less than, for example, about 10 degrees, for example, no less than about 15 degrees, no less than about 20 degrees, no less than about 25 degrees, or no less than about 30 degrees. The embodiments of the present disclosure are not limited to this.

[0070] In some examples, the barbs of the staples 206 may be integrally formed with the staple legs. Alternatively, the barbs may be formed separately from the same or different material as the staple legs and bonded to the staple legs. For example, the barbs may be made of a material that is compatible with the human body or at least harmless to the human body, such as some flexible polymer materials that are compatible with the human body and can expand after absorbing water.

[0071] Figure 2The embodiment shown has at least the following advantages: the self-locking stapler assembly uses an elastic compression deformation component to provide the thrust required to fire the stapler, thus simplifying the stapler pushing structure of the stapler, thereby breaking through the limitation of the structural size to a certain extent; no thrust loss that may act on the staple cartridge housing is generated, thereby reducing the material requirements for the staple cartridge housing; the self-locking stapler with a barb at the end is used, thereby avoiding the need to cooperate with the staple anvil to form a B-shaped staple, thereby reducing the material requirements for the staple anvil. Therefore, Figure 2 The self-locking stapler assembly of the illustrated embodiment helps to reduce the structural complexity and processing difficulty of the stapler and reduces the material cost and process cost.

[0072] Figure 3 FIG. 3 is a schematic diagram of a self-locking stapler assembly 300 according to another embodiment of the present disclosure. Figure 3 As shown, the stapler assembly 300 includes a compression spring 301, a sleeve 302, a stopper 303, a stopper connector 304, an actuating rod 305 and a stapler 306, wherein the compression spring 301, the sleeve 302, the stopper 303, the stopper connector 304 and the actuating rod 305 together constitute an actuating device.

[0073] The sleeve 302 is a hollow question mark-shaped (?) cylinder with a circular cross section, and the question mark-shaped cylinder includes an arc portion and a straight handle portion, and the arc portion may be, for example, slightly larger than a semicircular ring, and the length of the straight handle portion is, for example, approximately equal to the length of the compression spring 301 when it is in a compressed and deformed state. The sleeve 302 has a side wall and a cavity surrounded by the side wall, and the handle end of the sleeve 302 is partially closed and the arc end is open. An opening is provided on the side wall at the junction of the handle portion and the arc portion of the sleeve 302, for example, the opening is a through hole 307, and the through hole 307 separates the cavity inside the sleeve 302 into two relatively independent parts, namely, a first space 302a inside the handle portion and a second space 302b inside the arc portion.

[0074] The stopper 303 is accommodated in the sleeve 302 and is located at a position corresponding to the through hole 307. One end of the stopper connecting member 304 is located in the sleeve 302 and is detachably connected to the stopper 303. The stopper connecting member 304 extends to the outside of the sleeve 302 through the through hole 307, and is fixedly connected to the actuating rod 305 at one end thereof located outside the sleeve 302.

[0075] The stapler 306 has a staple head and a staple leg with a pointed end, and a barb is provided at the tip of the staple leg.

[0076] like Figure 3As shown, when the actuator 300 is in an unfired state, the compression spring 301 is accommodated in a first space 302a in the sleeve 302 and is stopped by the stopper 303 to keep the compression spring 301 in a compressed and deformed state. The stapler 306 is accommodated in a second space 302b of the sleeve 302.

[0077] When the actuator 300 is fired, the stop connector 304 separates from the stop member 303 and moves along the through hole 307 to exit the sleeve 302, so that the stop member 303 leaves the blocking position to release the compression spring 301, thereby allowing the compression spring 301 to at least partially recover from the compressed deformation state through elastic compression deformation recovery, and then provide a thrust through the compression deformation recovery force to push the stop member 303 to slide in the cavity of the sleeve 302, thereby causing the stop member 303 to push the stapler 306 to be ejected from the open end of the sleeve 302 and pass through the tissue to be sutured (not shown).

[0078] exist Figure 3 In the embodiment shown, the shapes and materials of the compression spring 301, the stopper 303, the actuating rod 305, the staple 306, and the material of the sleeve 302 are similar to those of the embodiment shown in FIG. Figure 2 The embodiments shown are similar and will not be described again here.

[0079] exist Figure 3 In the illustrated embodiment, the stopper connector 304 is used to indirectly connect the stopper 303 and the actuating rod 305 together, so as to keep the stopper 303 in a blocking position when the staple assembly 300 is in an unfired state, and to allow the stopper 303 to leave the blocking position by separating from the stopper 303 when the staple assembly 300 is fired. In some examples, the stopper connector 304 may have any shape that meets the following conditions: the size of at least a portion of the stopper connector 304 is small enough to extend to the outside of the sleeve 302 through the slit 307. In some examples, the shape of the stopper connector 304a may be, for example, a rod, a sheet, a strip, a chain, etc. that meets the above conditions. The embodiments of the present disclosure are not limited in this regard.

[0080] In some examples, the stopper connector 304 can be detachably connected to the stopper 303 in a variety of ways. For example, one end of the stopper connector 304 is detachably inserted into the stopper 303; when the staple assembly 300 is fired, the actuating rod moves to drive the end of the stopper connector 304 to be withdrawn from the stopper 303 and withdrawn from the sleeve 302 through the through hole 307. Or, for example, the end of the stopper connector 304 has a pair of substantially parallel clips, and the stopper 303 is clamped between the pair of clips; when the staple assembly 300 is fired, the actuating rod moves to drive the pair of clips of the stopper connector 304 to be withdrawn from both sides of the stopper 303 and withdrawn from the sleeve 302 through the through hole 307. The embodiments of the present disclosure are not limited to this.

[0081] In some examples, the stop connector 304 may be formed of a rigid or flexible material that is compatible with or at least harmless to the human body. For example, the material of the stop connector 304 may include, for example, medical stainless steel, titanium, titanium alloy, cobalt alloy and other metal materials; or medical ceramics, plastics and other non-metallic materials. Furthermore, at least a portion of the inner surface and / or outer surface of the stop connector 304 may also have a passivation layer, plating or coating that is compatible with or at least harmless to the human body. In at least one example, the material of the stop connector 304 may be the same as or different from the material of the sleeve 302 and / or the stop member 303. The embodiments of the present disclosure are not limited to this.

[0082] Figure 3 The embodiment shown has at least the following advantages: the stapler assembly uses an elastic compression deformation component to provide the thrust required to fire the stapler, thus simplifying the stapler pushing structure of the stapler, thereby breaking through the limitation of the structural size to a certain extent; no thrust loss that may act on the stapler magazine shell is generated, thereby reducing the material requirements for the stapler magazine shell; the use of self-locking staplers avoids the need to form a B-shaped staple with the anvil, thereby reducing the material requirements for the anvil. Therefore, Figure 2 The stapler assembly of the illustrated embodiment helps to reduce the structural complexity and processing difficulty of the stapler and reduces the material cost and process cost.

[0083] Figure 4 FIG. 4 is a schematic diagram of a self-locking stapler assembly 400 according to another embodiment of the present disclosure. Figure 4 As shown, the stapler assembly 400 includes a compression spring 401, a sleeve 402, a stopper 403, a stopper connector 404, an actuating rod 405, a stapler 406 and a lock 408, wherein the compression spring 401, the sleeve 402, the stopper 403, the stopper connector 404 and the actuating rod 405 together constitute an actuating device.

[0084] The sleeve 402 is a hollow arc sleeve with a circular cross section, and the arc is larger than a semicircular ring. The sleeve 402 has an outer side wall and a cavity surrounded by the outer side wall, and one end of the sleeve 402 is partially closed and the other end is open. A slit 407 extending along the axial direction of the sleeve 402 is provided on the outer side wall of the sleeve 402, and the direction of the slit 407 is substantially consistent with the deformation recovery direction of the compression spring 401. The slit 407 has a first slit end 407a close to the stopper 403 and a second slit end 407b close to the open end of the sleeve 402, and the first slit end 407a divides the cavity inside the sleeve 402 into two relatively independent parts, that is, a first space 402a between the partially closed end of the sleeve 402 and the first slit end 407a of the slit 407 and a second space 402b between the open end of the sleeve 402 and the first slit end 407b of the slit 407.

[0085] The end surface of the partially closed end of the sleeve 402 is a concentric ring, and an inner side wall that is partially coextensive with the outer side wall of the sleeve 402 is formed from the inner circumference of the concentric ring toward the inside of the sleeve 402. The length of the inner side wall is not greater than the distance from the partially closed end of the sleeve 402 (i.e., the end surface of the concentric ring) to the first slit end 407a, and the distance between the inner side wall and the outer side wall of the sleeve 402 is greater than the diameter of the spring wire of the compression spring 401. A space that is substantially coextensive with the inner side wall is defined between the outer side wall and the inner side wall of the sleeve 402, and the compression spring 401 in a compressed and deformed state is at least partially located in the space. A lock buckle 408 is provided in the space surrounded by the inner side wall of the sleeve 402.

[0086] The stopper 403 is accommodated in the sleeve 402 and is located at a position corresponding to the first slit end 407a of the slit 407. One end of the stopper connector 404 is located in the sleeve 402 and fixedly connected to the stopper 403, and the stopper connector 404 extends to the outside of the sleeve 402 through the slit 407. A hole 404a is provided at one end of the stopper connector 404 located outside the sleeve 402, a first thread is provided on the inner wall of the hole 404a, and a second thread is provided on the actuating rod 405, and the first thread can be engaged with the second thread so that the stopper connector 404 and the actuating rod 405 are detachably connected.

[0087] The stapler 406 has a staple head and a staple leg with a pointed end, and a barb is provided at the tip of the staple leg.

[0088] like Figure 4As shown in the figure, when the actuator 400 is in an unfired state, the compression spring 401 is accommodated in the space 402a in the sleeve 402, and is partially located in the space between the outer wall and the inner wall of the sleeve 402. The stopper 403 blocks the compression spring 401 to keep it in a compressed and deformed state. The stapler 406 is accommodated in the space 402b of the sleeve 402.

[0089] When the actuator 400 is fired, the actuator rod 405 is separated from the stopper connector 404, so that the stopper 403 leaves the blocking position to release the compression spring 401, so that the compression spring 401 is at least partially restored from the compression deformation state through elastic compression deformation recovery, and then the compression deformation recovery force provides a thrust to push the stopper 403 to slide in the cavity of the sleeve 402, and thus the stopper 403 pushes the staple 406 to be ejected from the open end of the sleeve 402 and pass through the tissue to be sutured (not shown). In the process of the stopper 403 sliding along the cavity of the sleeve 402, the stopper connector 404 is driven by the stopper 403 to slide along the slit 407. After the staple 406 passes through the tissue to be sutured, the tip of its staple leg is inserted into the space surrounded by the inner wall of the sleeve 402 and cooperates with the lock buckle 408 to form a staple.

[0090] exist Figure 4 In the embodiment shown, the shapes, materials and working methods of the compression spring 401, the stopper 403, the stopper connector 404, the actuating rod 405 and the stapler and the material of the sleeve 402 are similar to those of the embodiment shown in the figure. Figure 2 The embodiments shown are similar and will not be described again here.

[0091] exist Figure 4 In the illustrated embodiment, a lock 408 is provided in the space surrounded by the inner wall of the sleeve 402. After firing, the staple 406 passes through the tissue to be sutured, and the barbs at the tips of the staple legs are inserted into the space surrounded by the inner wall of the sleeve 402 and further pass through the lock 408 located in the space, and the lock 408 clamps the barbs to form a staple. However, in some other embodiments of the present disclosure, a sensor may be provided in the space surrounded by the inner wall of the sleeve 402 instead, and the sensor is used to obtain information on the completion of staple suture. In some examples, the sensor may be a pressure-sensitive sensor, a force-sensitive sensor, etc., which is not limited in the present application.

[0092] Figure 4The embodiment shown has at least the following advantages: the self-locking stapler assembly uses an elastic compression deformation component to provide the thrust required to fire the stapler, thus simplifying the stapler pushing structure of the stapler, thereby breaking through the limitation of the structural size to a certain extent; no thrust loss that may act on the stapler magazine shell is generated, thereby reducing the material requirements for the stapler magazine shell; the use of a self-locking stapler avoids the need to form a B-shaped staple with the staple anvil, thereby reducing the material requirements for the staple anvil. Therefore, Figure 2 The self-locking stapler assembly of the illustrated embodiment helps to reduce the structural complexity and processing difficulty of the stapler and reduces the material cost and process cost.

[0093] At least one embodiment of the present disclosure further provides a staple assembly set, which includes a plurality of staple assemblies according to any embodiment of the present disclosure, wherein the plurality of staple assemblies share a common actuating rod.

[0094] Figure 5 FIG. 5 is a schematic diagram of a stapler assembly 500 according to an embodiment of the present disclosure. Figure 5 As shown, the staple assembly group 500 includes n (n≥2) staple assemblies 500a, 500b, 500c...500n, wherein the staple assemblies 500a, 500b, 500c...500n share the same actuating rod 505. In some examples, n may be an integer not less than 2, for example, not less than 3, not less than 5, not less than 8, not less than 10, not less than 15, not less than 20 or more. Alternatively, in some examples, n may be an integer not greater than 60, for example, not greater than 55, not greater than 50, not greater than 45, not greater than 40 or less.

[0095] exist Figure 5 In the illustrated embodiment, each of the staples 500a, 500b, 500c, ..., 500n is connected to Figure 2 The embodiments shown are similar and will not be described again here.

[0096] when Figure 5When the plurality of staple assemblies of the illustrated embodiment are fired for the first time, the actuating rod 505 is moved under the control of a control device (not shown) to separate from the stopper connector in the staple assembly 500a, so that the stopper connector in the staple assembly 500a leaves the blocking position, and the compression spring included in the staple assembly 500a at least partially recovers from its compressed and deformed state, pushing the stopper connector of the staple assembly 500a to slide in the sleeve cavity of the staple assembly 500a, thereby pushing the staples of the staple assembly 500a to be ejected and pass through the tissue to be sutured to form staples, and then the sleeve in the staple assembly 500a and other components included therein are released from the sleeve cavity. When the staple assembly 500 is fired again, the actuating rod 505 repeats the action of the first firing, and the staples included in the staple assembly 500b are fired. Subsequently, the sleeve in the staple assembly 500b and other components included therein fall off from the actuating rod 505, and the staple assembly 500c becomes the first staple assembly remaining in the staple assembly group 500... and so on, until the staples included in the last staple assembly 500n in the staple assembly 500 are fired.

[0097] exist Figure 5 In the illustrated embodiment, the firing process of each staple assembly in the staple assembly set 500 is similar to Figure 2 The embodiments shown are similar and will not be described again here.

[0098] Figure 5 The embodiment shown has at least the following advantages: the self-locking stapler assembly uses an elastic compression deformation component to provide the thrust required to fire the stapler, thus simplifying the stapler pushing structure of the stapler, thereby breaking through the limitation of the structural size to a certain extent; no thrust loss that may act on the stapler magazine shell is generated, thereby reducing the material requirements for the stapler magazine shell; the use of self-locking staples avoids the need to form a B-shaped staple with the anvil, thereby reducing the material requirements for the anvil. In addition, Figure 5 The stapler assembly shown also uses a plurality of stapler assemblies that share the same actuating rod, thereby enabling continuous suturing. Figure 5 The stapler assembly set of the illustrated embodiment helps to reduce the structural complexity and processing difficulty of the stapler, and reduces the material cost and process cost, and simplifies the operation process during suturing.

[0099] There are a few points to note about this disclosure.

[0100] (1) The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure, and other structures may refer to the general design.

[0101] (2) For the sake of clarity, in the drawings used to describe the embodiments of the present disclosure, the thickness of layers or regions is enlarged or reduced, that is, these drawings are not drawn according to the actual scale.

[0102] (3) In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0103] The above are merely exemplary embodiments of the present disclosure and are not intended to limit the protection scope of the present disclosure. The protection scope of the present disclosure is determined by the appended claims.

Claims

1. A self-locking stapler assembly, comprising an actuating device and a stapler, wherein: The actuating device comprises: Elastic compression deformation components; A sleeve, wherein the sleeve comprises a hollow arc-shaped portion and has a side wall, a cavity surrounded by the side wall, a first sleeve end that is at least partially closed, and a second sleeve end that is at least partially open, an opening is provided on the side wall of the sleeve, and the opening divides the cavity into a first space between the first sleeve end and the opening and a second space between the opening and the second sleeve end, the first space is configured to accommodate the elastic compression deformation component, and the second space is configured to accommodate the staples; a stopper, wherein the stopper is arranged to be located at a blocking position in the opening in the sleeve when the staple assembly is in an unfired state, and can slide in the cavity of the sleeve after the staple assembly is fired; Wherein, the sleeve and / or the stopper are formed of a rigid material that is harmless to the human body; an actuating rod configured to be detachably connected to the stopper through the opening, Wherein, when the staple assembly is in an unfired state, the actuating rod is connected to the stopper, the stopper is in the blocking position, the elastic compression deformation component is accommodated in the first space in the sleeve in a compression deformation state, and is blocked by the stopper so that the elastic compression deformation component is maintained in the compression deformation state; When the staple assembly is fired, the stopper and the actuating rod are separated from each other, so that the stopper leaves the blocking position to release the elastic compression deformation component, so that the elastic compression deformation component is at least partially restored from the compression deformation state, thereby providing a thrust for the staple.

2. The stapler assembly according to claim 1, wherein: The arc-shaped portion of the sleeve is larger than or equal to a semicircular ring.

3. The self-locking stapler assembly according to claim 1, wherein: The actuating device further comprises a stop connecting member configured to detachably connect the stop member and the actuating rod; When the staple assembly is in an unfired state, the stop connector is configured to be connected to the stop member and extends to the outside of the sleeve through the opening, and the actuating rod is configured to be outside the sleeve and connected to the stop connector; When the staple assembly is fired, the stopper connecting member is separated from one of the stopper and the actuating rod, and the stopper leaves the blocking position to release the elastic compression deformation component.

4. The self-locking stapler assembly according to claim 3, wherein: The stop connecting member is fixedly connected to the stop member and detachably connected to the actuating rod. The opening of the sleeve is a slit extending in the axial direction of the sleeve, the slit has a first slit end close to the first sleeve end and a second slit end close to the second sleeve end, and the direction of the slit is substantially consistent with the deformation recovery direction of the elastic compression deformation component. When the staple assembly is in an unfired state, the stopper is located at the first slit end; when the staple assembly is fired, the stopper connector is separated from the actuating rod, the stopper leaves the blocking position to release the elastic compression deformation component, and slides along the cavity in the sleeve under the action of the deformation recovery force and drives the stopper connector to slide along the slit.

5. The self-locking stapler assembly according to claim 4, wherein: A hole is provided on one end of the stop connector located outside the sleeve, the hole has a first thread, the actuating rod has a second thread that can engage with the first thread, and the stop connector and the actuating rod are detachably connected through the engagement of the first thread and the second thread.

6. The self-locking stapler assembly according to claim 3, wherein the stopper connector is detachably connected to the stopper and fixedly connected to the actuating rod, The opening of the sleeve is a through hole. When the staple assembly is in an unfired state, the stopper is located at the through hole. When the staple assembly is fired, the stop connector is separated from the stopper and exits the sleeve along the through hole. The stopper leaves the blocking position to release the elastic compression deformation component and slides along the cavity in the sleeve under the action of the deformation restoring force.

7. The self-locking stapler assembly according to claim 1, wherein: The stapler comprises a staple cap and a staple leg connected to the staple cap and having a pointed end, a return prevention device is arranged at the pointed end of the staple leg, the staple cap is close to the stopper, and the pointed end of the staple leg is close to the second sleeve end.

8. The self-locking stapler assembly according to any one of claims 1 to 7, wherein: The elastic compression deformation component includes one of a compression spring, an elastic resin part, a Z-shaped elastic part, an accordion-shaped elastic part, or a lantern-frame-shaped elastic part having two end surfaces connected by a plurality of elastic rods or elastic sheets.

9. The self-locking stapler assembly according to any one of claims 1 to 7, wherein: The sleeve is a hollow arc-shaped cylinder and further comprises a space at the first sleeve end for accommodating the tip of the staple leg of the staple after firing.

10. The self-locking stapler assembly according to claim 9, further comprising a sensor or a lock, wherein: The sensor or the lock is disposed in the space for accommodating the tip of the staple leg of the staple after firing.

11. The self-locking stapler assembly according to any one of claims 1 to 7, wherein: The sleeve is a hollow question mark-shaped sleeve, and the question mark-shaped sleeve includes the arc-shaped portion and a handle portion connected to the arc-shaped portion. The arcuate portion of the question mark-shaped tube is used to accommodate the stapler, and the length of the handle portion of the question mark-shaped tube is not less than the length of the elastic compression deformation component at the maximum compression deformation degree and is not greater than the length of the elastic compression deformation component in the non-deformed state, and is used to accommodate the elastic compression deformation component in the compression deformation state.

12. The self-locking stapler assembly according to claim 7, wherein: The non-return device is a barb.

13. A stapler assembly set, comprising a plurality of self-locking stapler assemblies according to any one of claims 1 to 12, wherein the plurality of stapler assemblies share a common actuating rod.

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