Actuating device for firing staples and staple assembly

Abstract

An actuating device for firing staples includes an elastic compression deformation component, a sleeve and an actuating rod, wherein the elastic compression deformation component is configured to be in a compression deformation state when in an unfired state and is released when fired to provide a thrust for the staples; the sleeve has a side wall, a cavity surrounded by the side wall, and a first end and a second end, and a through hole is provided on the side wall of the sleeve, the through hole dividing the cavity into a first space and a second space; the actuating rod is configured to pass through the through hole and is divided into a first part located in the sleeve and a second part outside the sleeve. When in an unfired state, the elastic compression deformation component is accommodated in the sleeve and is blocked by the first part of the actuating rod to maintain the compression deformation state; when fired, the first part of the actuating rod moves away from the blocking position through the through hole to release the elastic compression deformation component, thereby allowing the elastic compression deformation component to at least partially recover from the compression deformation state. A staple assembly and a staple assembly group are also provided.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to an actuating device for firing staples and a staple assembly including the actuating device. 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.

[0004] Public Content

[0005] At least one embodiment of the present disclosure provides an actuating device for firing staples, the actuating device comprising: an elastic compression deformation component, wherein the elastic compression deformation component is configured to be in a compression deformation state when the actuating device is in an unfired state, and is released to at least partially recover from the compression deformation state when the actuating device is fired, thereby providing a thrust for the staples; a sleeve, wherein the sleeve has a side wall, a cavity surrounded by the side wall, and a first end that is at least partially closed and a second end that is at least partially open, a first through hole is provided on the side wall of the sleeve, the first through hole divides the cavity into a first space between the first end and the first through hole and a second space between the second end and the first through hole ; and an actuating rod, wherein the actuating rod is configured to pass through a first through hole when the actuating device is in an unfired state, and is divided into a first part located in the cavity of the sleeve and a second part located outside the sleeve from a position where the actuating rod contacts the first through hole, wherein, when the actuating device is in an unfired state, the elastic compressible deformation component is accommodated in a first space in the sleeve in a compressed deformation state, and is blocked by the first part of the actuating rod to keep the elastic compressible deformation component in a compressed deformation state; when the actuating device is fired, the first part of the actuating rod moves away from the blocking position through the first through hole to release the elastic compressible deformation component, thereby allowing the elastic compressible deformation component to at least partially recover from the compressed deformation state.

[0006] In some embodiments, 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.

[0007] In some embodiments, the second space is configured to accommodate staples.

[0008] In some embodiments, the actuator device further comprises a baffle, wherein the baffle is located in the sleeve and is configured to be able to slide within the sleeve, and when the actuator device is in an unfired state, the baffle is located between the elastic compression deformation component and the first portion of the actuator rod; when the actuator device is fired, the baffle is pushed by the deformation recovery force of the elastic compression deformation component, thereby providing a thrust for the staples.

[0009] In some embodiments, the blocking piece is connected to an end of the elastic compression deformation component close to the first portion of the actuating rod.

[0010] In some embodiments, the area of ​​the blocking piece is larger than the opening area of ​​the second end of the sleeve to prevent the blocking piece from falling off through the second end of the sleeve.

[0011] In some embodiments, the actuating rod is a worm screw having a first thread.

[0012] In some embodiments, the first through hole has a second thread that meshes with the first thread of the actuating rod.

[0013] In some embodiments, a second hole opposite to the first through hole is further provided on the side wall of the sleeve, and the second hole is a through hole or a blind hole.

[0014] In some embodiments, the second hole has a third thread that engages with the first thread of the actuating rod.

[0015] In some embodiments, the sleeve is a hollow straight cylinder or a hollow at least partially curved cylinder.

[0016] In some embodiments, the sleeve is a hollow arc-shaped sleeve, and the arc is larger than a semicircular ring.

[0017] In some embodiments, the sleeve further includes a space at the first end for accommodating the tip of the stapler after firing.

[0018] In some embodiments, the actuation device further comprises a sensor or a lock, wherein the sensor or the lock is disposed in the space for accommodating the tip of the staple after firing.

[0019] In some embodiments, the sleeve is a hollow question mark-shaped tube, the arc portion of the question mark-shaped tube is greater than or equal to a semicircular ring, and is used to accommodate the staplers, and the length of the handle portion of the question mark-shaped tube is roughly equal to the length of the elastic compression deformation component in the compression deformation state, and is used to accommodate the elastic compression deformation component in the compression deformation state.

[0020] At least one embodiment of the present disclosure further provides a staple assembly, which includes the actuating device according to at least one embodiment of the present disclosure and at least one staple accommodated in a sleeve of the actuating device.

[0021] In some embodiments, the stapler comprises a staple head and a staple leg, wherein the staple leg has a non-return structure.

[0022] In some embodiments, the non-return structure is a rigid or flexible barb.

[0023] At least one embodiment of the present disclosure further provides a staple assembly set, which 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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.

[0025] 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;

[0026] Figure 2A is a schematic diagram of an actuating device for firing staples according to an embodiment of the present disclosure in an unfired state;

[0027] Figure 2B for Figure 2A A schematic diagram of the actuating device for firing staples according to the illustrated embodiment after firing;

[0028] Figure 3 is a schematic diagram of an actuating device for firing staples according to another embodiment of the present disclosure;

[0029] Figure 4 is a schematic diagram of an actuating device for firing staples according to yet another embodiment of the present disclosure;

[0030] Figure 5 is a schematic diagram of an actuating device for firing staples according to yet another embodiment of the present disclosure;

[0031] Figure 6is a schematic diagram of a staple assembly according to one embodiment of the present disclosure;

[0032] Figure 7 is a schematic diagram of a staple assembly according to yet another embodiment of the present disclosure. DETAILED DESCRIPTION

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] A stapler used in a cavity-entry stapler is generally fired by a staple pushing structure (actuator) comprising a staple pushing rod, a staple pushing slider and a staple pushing plate. The firing process requires that the lateral thrust provided by the staple pushing rod be converted into a longitudinal thrust on the staple pushing plate through the inclined surface of the guide wall on the staple pushing slider, thereby pushing the staple through the tissue to be sutured and deforming in cooperation with the staple anvil to form a B-shaped staple.

[0038] This method of firing and pushing nails requires a relatively complex nail pushing structure, which limits the size of the end effector of the cavity-entering stapler and its internal structure (for example, the size of the staple 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 and cause 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.

[0039] In order to solve the above and other problems, the inventors have noticed that a new actuator for firing staples can be designed by using the deformation recovery force of the elastic compression deformation component to provide a pushing force for driving the staples through the tissue to be sutured. This new actuator does not need to design and use a relatively complex nail pushing structure including a nail pushing rod, a nail pushing slider and a nail 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 actuator for firing staples provided by at least one embodiment of the present disclosure will not cause thrust loss that may act on the stapler housing, so it can reduce the material requirements for the end effector of the stapler, especially the stapler housing used therein. Therefore, the new actuator for firing staples 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.

[0040] At least one embodiment of the present disclosure provides an actuating device for firing staples and a staple assembly using the actuating device.

[0041] According to at least one embodiment of the present disclosure, an actuating device for firing staples is provided, the actuating device comprising: an elastic compression deformation component, wherein the elastic compression deformation component is configured to be in a compression deformation state when the actuating device is in an unfired state, and is released to at least partially recover from the compression deformation state when the actuating device is fired, thereby providing a thrust for the staples; a sleeve, wherein the sleeve has a side wall, a cavity surrounded by the side wall, a first end that is at least partially closed, and a second end that is at least partially open, a through hole is provided on the side wall of the sleeve, the through hole divides the cavity into a first space between the first end and the through hole and a second space between the second end and the through hole and an actuating rod, wherein the actuating rod is configured to pass through the through hole when the actuating device is in an unfired state, and is divided into a first part located in the cavity of the sleeve and a second part located outside the sleeve from a position where the actuating rod contacts the through hole, wherein, when the actuating device is in an unfired state, the elastic compression-deformation component is accommodated in the first space in the sleeve in a compressed deformation state, and is blocked by the first part of the actuating rod to keep the elastic compression-deformation component in a compressed deformation state; when the actuating device is fired, the first part of the actuating rod moves away from the blocking position through the through hole to release the elastic compression-deformation component, thereby allowing the elastic compression-deformation component to at least partially recover from the compressed deformation state.

[0042] In at least one example of the above embodiments, the elastic compression deformation component is used to recover its deformation by removing the actuating rod that blocks it (i.e., removing the external load) when firing, and then the restoring force generated by the deformation recovery provides a nail pushing force for pushing the stapler (not shown) through the tissue to be sutured (not shown). 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.

[0043] Figure 1Schematic diagrams of examples of several 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: (a) a compression spring, (b) an elastic resin part, (c) a Z-shaped elastic part, (d) an accordion-shaped elastic part, and (e) a lantern frame-shaped elastic part.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] Figure 1 Several elastic compression deformation components that can be used in an actuating device for firing staples in 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 an external load 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.

[0054] In at least one embodiment of the present disclosure, the actuating device further comprises a baffle, which is located in the sleeve and is configured to slide in the sleeve, and when the actuating device is in an unfired state, the baffle is located between the elastic compression deformation component and the actuating rod. In at least one example, the baffle can be connected to an end of the elastic compression deformation component close to the staple. In at least one example, the area of ​​the baffle is larger than the opening area of ​​the at least partially open end of the sleeve to prevent the baffle from falling off through the at least partially open end of the sleeve.

[0055] In at least one example of the above embodiments, the actuating rod is a worm with a helical line, and the worm is driven by a worm gear. In at least one example, at least one of a pair of through holes provided on the side wall of the sleeve has a thread that meshes with the helical line on the actuating rod.

[0056] In at least one example of the above embodiments, the sleeve may be a hollow straight cylinder or a hollow at least partially curved cylinder. For example, the sleeve is a hollow arc-shaped sleeve, and the arc is larger than a semicircular ring. Further, for example, the sleeve further includes a space for accommodating the tip of the staple after firing at an at least partially closed end. Further, for example, a sensor or a lock is provided in the space for accommodating the tip of the staple after firing. For another example, the sleeve may be a hollow question mark-shaped (?) cylinder, the arc portion of the question mark-shaped cylinder is larger than or equal to the semicircular ring, for accommodating the staple, and the length of the handle portion of the question mark-shaped cylinder is approximately equal to the length of the elastic compression deformation component in the compression deformation state, for accommodating the elastic compression deformation component in the compression deformation state.

[0057] In at least one example of the above embodiments, the cross-section of the sleeve may have a circular, elliptical, square, rectangular, triangular, or other shape, which is not limited in the present disclosure.

[0058] According to at least one embodiment of the present disclosure, a staple assembly is also provided, the staple assembly comprising any of the above-mentioned actuating devices for firing staples and a staple contained in a sleeve of the actuating device. For example, the staple may have a staple cap and a staple leg, and the staple leg may have a non-return structure. Further, the non-return structure may be a rigid or flexible barb.

[0059] According to at least one embodiment of the present disclosure, a staple assembly group is further provided. The staple assembly group 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.

[0060] 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 cross-section of the sleeve is circular as an example for description, but the embodiments of the present disclosure are not limited to these examples.

[0061] Figure 2A is a schematic diagram of an actuating device for firing staples according to an embodiment of the present disclosure in an unfired state; Figure 2B for Figure 2A The illustrated embodiment is a schematic diagram of an actuating device for firing staples after firing.

[0062] like Figure 2AAs shown, the actuator 200 includes a compression spring 201, a sleeve 202 and an actuator rod 203. The sleeve 202 is a hollow straight 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 closed and the other end is open. A pair of through holes 204a, 204b are provided on the side wall of the sleeve 202, and the through holes 204a, 204b separate the cavity inside the sleeve 202 into two relatively independent parts, that is, a space 202a located between the closed end of the sleeve 202 and the through holes 204a, 204b and a space 202b located between the open end of the sleeve 202 and the through holes 204a, 204b. The actuator rod 203 passes through the through holes 204a, 204b.

[0063] like Figure 2A As shown, when the actuating device 200 is in an unfired state, the compression spring 201 is accommodated in the space 202a in the sleeve 202 and is blocked by the actuating rod 203 to keep the compression spring 201 in a compressed and deformed state. The space 202b of the sleeve 202 is configured to accommodate staples (not shown).

[0064] like Figure 2B As shown, when the actuator 200 is fired, the actuator rod 203 moves away from the blocking position through the through holes 204a, 204b to release the compression spring 201, so that the compression spring 201 is at least partially restored from the compressed deformation state through elastic compression deformation recovery, and then provides a staple pushing force to push the staples through the tissue to be sutured through the compression deformation recovery force.

[0065] exist Figure 2A 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.

[0066] exist Figure 2A 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.

[0067] In some examples, the actuating rod 203 may be a rod body that is at least partially linear and has a diameter not greater than the diameter of the through holes 204a, 204b on the side wall of the sleeve 202, and can 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 the stapler using the actuating device 200. The actuating rod 203 may be made of, for example, a rigid or flexible material that is compatible with the human body or at least harmless to the human body. For example, the material of the actuating rod 203 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 and other flexible materials that can be bent and deformed. Further, at least a portion of the inner surface and / or outer surface of the actuating rod 203 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.

[0068] Figure 2A The illustrated embodiment simplifies the stapler's staple pushing structure by using an elastic compression deformation component to provide the thrust required to fire the staples, thereby breaking through the limitation of the structural size to a certain extent; and does not generate thrust loss that may act on the staple magazine housing, thereby reducing the material requirements for the staple magazine, thus helping to reduce the structural complexity and processing difficulty of the stapler and reducing production costs.

[0069] Figure 3 FIG. 2 is a schematic diagram of an actuating device for firing staples according to another embodiment of the present disclosure. Figure 3 As shown, the actuating device 300 includes a compression spring 301 , a sleeve 302 , an actuating rod 303 and a blocking piece 305 .

[0070] The sleeve 302 is a hollow arc sleeve with a circular cross section, and the arc is larger than a semicircular ring. The sleeve 302 has a side wall and a cavity surrounded by the side wall, and one end of the sleeve 302 is closed and the other end is partially open. A pair of through holes 304a, 304b are provided on the side wall of the sleeve 302, and the through holes 304a, 304b separate the cavity inside the sleeve 302 into two relatively independent parts, that is, a space 302a located between the closed end of the sleeve 302 and the through holes 304a, 304b and a space 302b located between the partially open ends of the sleeve 302. The actuating rod 302 passes through the through holes 304a, 304b.

[0071] like Figure 3As shown, when the actuating device 300 is in an unfired state, the compression spring 301 is accommodated in the space 302a in the sleeve 302 and is blocked by the actuating rod 303 to keep the compression spring 301 in a compressed and deformed state. The space 302b of the sleeve 302 is configured to accommodate staples (not shown). The baffle 305 is located between the compression spring 301 and the actuating rod 303, that is, between the space 302a and the space 302b. The area of ​​the baffle 305 is larger than the area of ​​the partially open end of the sleeve 302, so it will not fall off from the opening of the partially open end.

[0072] When the actuator 300 is fired, the actuator rod 303 moves away from the blocking position through the through holes 304a, 304b to release the compression spring 301, so that the compression spring 301 recovers at least partially from the compressed deformation state through elastic compression deformation recovery, pushing the blocking piece 305 to slide in the sleeve 302 toward the partially open end of the sleeve 302, thereby pushing the staples through the tissue to be sutured.

[0073] exist Figure 3 In the embodiment shown, the material and shape of the compression spring 301 and the material of the sleeve 402 are Figure 2A The embodiments shown are similar and will not be described again here.

[0074] exist Figure 3 In the illustrated embodiment, the actuating rod 303 is a straight worm with a spiral line, and the diameter of the actuating rod 303 is not larger than the inner diameter of the through holes 304a, 304b. The through holes 304a, 304b are provided with threads that mesh with the spiral lines on the actuating rod 303. The actuating rod 303 is connected to a worm gear (not shown) at one end away from the through holes 304a, 304b, and moves toward the distal end or the proximal end under the control of the worm gear. The distal end or the proximal end here refers to the worm gear, and the worm gear is installed in the handle of the stapler using the actuating device 300, for example. The material of the actuating rod 303 is similar to Figure 2A The embodiments shown are similar and will not be described again here.

[0075] exist Figure 3 In the illustrated embodiment, the baffle 305 is used to evenly distribute the deformation recovery force generated when the compression spring 301 is at least partially recovered from the compression deformation state on the baffle 305, thereby making the thrust of the staples uniform. In some examples, the baffle 305 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 302, thereby enabling the baffle 305 to slide in the inner cavity of the sleeve 302. For example, the shape of the baffle 305 may be a circle, a rectangle, a triangle, etc. that meets the above conditions. Further, for example, the baffle 305 may be a circle with a diameter slightly smaller than the inner diameter of the sleeve 302. The embodiments of the present disclosure are not limited to this.

[0076] In some examples, the baffle 305 may be made of, for example, a material that is compatible with or at least harmless to the human body. For example, the material of the baffle 303 may include, for example, medical stainless steel, titanium, titanium alloy, cobalt alloy, ceramic, plastic, resin, etc. Further, at least a portion of at least one surface of the baffle 203 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.

[0077] Figure 3 The illustrated embodiment uses an elastic compression deformation component to provide the thrust required to fire the staplers, thereby simplifying the transmission structure of the stapler and reducing the material requirements for the stapler magazine, thereby helping to reduce the structural complexity and processing difficulty of the stapler and reducing production costs.

[0078] Figure 4 FIG. 2 is a schematic diagram of an actuating device for firing staples according to another embodiment of the present disclosure. Figure 4 As shown, the actuating device 400 includes a compression spring 401 , a sleeve 402 , an actuating rod 403 and a blocking piece 405 .

[0079] The sleeve 402 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, the arc is roughly equal to a semicircular ring, and the length of the straight handle portion is roughly equal to the length of the compression spring 401 when it is in a compressed deformation state. The sleeve 402 has a side wall and a cavity surrounded by the side wall, and the handle end of the sleeve 402 is closed and the arc end is open. A pair of through holes 404a, 404b are provided on the side wall of the sleeve 402 at the junction of the handle portion and the arc portion, and the through holes 404a, 404 divide the cavity inside the sleeve 402 into two relatively independent parts, that is, the space 402a inside the handle portion and the space 402b inside the arc portion. The actuating rod 403 passes through the through holes 404a, 404b.

[0080] like Figure 4 As shown, when the actuating device 400 is in an unfired state, the compression spring 401 is accommodated in the space 402a inside the sleeve 402 and is blocked by the actuating rod 403 to keep the compression spring 401 in a compressed and deformed state. The space 402b inside the sleeve 402 is configured to accommodate staples (not shown). The blocking piece 405 is fixed to one end of the compression spring 401 close to the actuating rod 403 and can slide in the sleeve 402.

[0081] When the actuator 400 is fired, the actuator rod 403 moves away from the blocking position through the through holes 404a, 404b to release the compression spring 401, so that the compression spring 401 recovers at least partially from the compressed deformation state through elastic compression deformation recovery, pushing the blocking piece 405 to slide in the sleeve 402 toward the open end of the sleeve 402, thereby pushing the staples through the tissue to be sutured.

[0082] exist Figure 4 In the embodiment shown, the shape, material and working mode of the compression spring 401, the actuating rod 403 and the blocking piece 405 and the material of the sleeve 402 are similar to those of the embodiment shown in FIG. Figure 3 The embodiments shown are similar and will not be described again here.

[0083] Figure 4 The illustrated embodiment uses an elastic compression deformation component to provide the thrust required to fire the staplers, thereby simplifying the transmission structure of the stapler and reducing the material requirements for the stapler magazine, thereby helping to reduce the structural complexity and processing difficulty of the stapler and reducing production costs.

[0084] Figure 5 FIG. 2 is a schematic diagram of an actuating device for firing staples according to another embodiment of the present disclosure. Figure 5 As shown, the actuating device 500 includes a compression spring 501 , a sleeve 502 , an actuating rod 503 , a blocking piece 505 and a sensor 506 .

[0085] The sleeve 502 is a hollow arc sleeve with a circular cross section, and the arc is larger than a semicircular ring. The sleeve 502 has an outer side wall and a cavity surrounded by the outer side wall, and one end of the sleeve 502 is partially closed and the other end is open. A pair of through holes 504a, 504b are provided on the outer side wall of the sleeve 502, and the through holes 504a, 504b separate the cavity inside the sleeve 502 into two relatively independent parts, that is, a space 502a between the partially closed end of the sleeve 502 and the through holes 504a, 504b and a space 502b between the open ends of the sleeve 502. The actuating rod 502 passes through the through holes 504a, 504b.

[0086] The end face of the partially closed end of the sleeve 502 is a concentric ring, and an inner side wall coextensive with the outer side wall of the sleeve 502 is formed from the inner periphery of the concentric ring toward the inside of the sleeve 502. The length of the inner side wall is less than the distance from the partially closed end of the sleeve 502 (i.e., the end face of the concentric ring) to the through holes 504a, 504b, and the distance between the inner side wall and the outer side wall of the sleeve 502 is greater than the diameter of the spring wire of the compression spring 501. A space substantially coextensive with the inner side wall is defined between the outer side wall and the inner side wall of the sleeve 502, and the compression spring 502 portion in a compressed and deformed state is located in the space. A sensor 506 is provided in the space surrounded by the inner side wall of the sleeve 502.

[0087] like Figure 5 As shown, when the actuating device 500 is in an unfired state, the compression spring 501 is accommodated in the space 502a in the sleeve 502, and is partially located in the space between the outer side wall and the inner side wall of the sleeve 502, and the actuating rod 503 blocks the compression spring 501 to keep it in a compressed and deformed state. The space 502b of the sleeve 502 is configured to accommodate staples (not shown). The blocking piece 505 is fixed to one end of the compression spring 501 close to the actuating rod 503.

[0088] When the actuator 500 is fired, the actuator rod 503 moves away from the blocking position through the through holes 504a, 504b to release the compression spring 501, so that the compression spring 501 recovers at least partially from the compression deformation state through elastic compression deformation recovery, pushing the blocking piece 505 to slide in the sleeve 502 toward the open end of the sleeve 502, thereby pushing the staple to pass through the tissue to be sutured. After the staple passes through the tissue to be sutured, its front tip is inserted into the space surrounded by the inner wall of the sleeve 502 and touches the sensor 506, which sends information that the staple suture is completed.

[0089] exist Figure 5 In the embodiment shown, the shapes, materials and working methods of the compression spring 501, the actuating rod 503 and the blocking piece 505 and the material of the sleeve 502 are similar to those of the embodiment shown in FIG. Figure 3 The embodiments shown are similar and will not be described again here.

[0090] exist Figure 5 In the illustrated embodiment, a sensor 506 is provided in the space surrounded by the inner side wall of the sleeve 502 to send information indicating that the staples are completed after firing. However, in some other embodiments of the present disclosure, a lock buckle may be provided in the space surrounded by the inner side wall of the sleeve 502 to cooperate with the tip of the staples to form a staple.

[0091] Figure 5The illustrated embodiment uses an elastic compression deformation component to provide the thrust required to fire the staplers, thereby simplifying the transmission structure of the stapler and reducing the material requirements for the stapler magazine, thereby helping to reduce the structural complexity and processing difficulty of the stapler and reducing production costs.

[0092] At least one embodiment of the present disclosure further provides a staple assembly, which includes an actuating device for firing a staple provided in any of the above embodiments and a staple accommodated in a sleeve of the actuating device. For example, the staple may have a staple cap and a staple leg, and the staple leg may have a non-return structure. Further, the non-return structure may be a rigid or flexible barb or the like.

[0093] Figure 6 FIG. 2 shows a schematic diagram of a staple assembly according to an embodiment of the present disclosure. Figure 6 As shown, the staple assembly includes an actuating device 600 for firing staples and staples 606 accommodated in the actuating device 600 .

[0094] The actuating device 600 includes a compression spring 601, a hollow arc-shaped sleeve 602 with one end closed and the other end partially open, an actuating rod 603 and a blocking piece 605. A pair of through holes 604a, 604b are provided on the side wall of the arc-shaped sleeve 602, and the actuating rod 603 passes through the pair of through holes 604a, 604b. Figure 6 The shapes, materials and working modes of the various components in the actuator 600 of the embodiment shown are similar to those of Figure 3 The embodiments shown are similar and will not be described again here.

[0095] exist Figure 6 In the illustrated embodiment, the staple 606 has a nail cap 606a and a nail leg 606b, wherein the shape and size of the nail cap 606a are set to allow it to slide inside the sleeve 602, and the tip of the nail leg 606b has a barb 606c extending from the tip toward the nail cap. As shown in the figure, the nail leg 606b of the staple 606 is arc-shaped and is accommodated in the arc-shaped sleeve 602 of the actuator 600. When the actuator 600 is fired, the compression spring 601 is at least partially restored from its compressed deformation state, and the resulting compression deformation restoring force pushes the baffle to slide in the arc-shaped sleeve 602, thereby pushing the staple 606 through the tissue to be sutured. After firing, the staple cap 606 a prevents the staple 606 from penetrating the tissue to be sutured, and the barb 606 c prevents the staple 606 from withdrawing from the tissue to be sutured or falling off from the tissue to be sutured, thereby making the staple 606 self-locking into a staple after firing.

[0096] exist Figure 6In the illustrated embodiment, the staples 606 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 606 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 606 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.

[0097] exist Figure 6 In the illustrated embodiment, the nail cap 606a of the stapler 606 may be any shape that is larger than the cross-section of the nail leg 606b but smaller than the cross-section of the inner cavity of the sleeve 602, such as a circle, a rectangle, or a triangle. Alternatively, the nail cap 606a may be a mosquito coil-shaped structure formed by bending a metal wire integrally formed with the nail leg 606b. The embodiments of the present disclosure are not limited to this.

[0098] exist Figure 6 In the illustrated embodiment, the barb 606c of the staple 606 is a barb-shaped structure extending from the tip of the staple leg 606b toward the nail cap 606a and gradually away from the staple leg 606b. For example, the angle between the barb 606c and the staple leg 606b 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 606c and the staple leg 606b 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.

[0099] exist Figure 6 In the illustrated embodiment, the barbs 606c may be integrally formed with the nail legs 606b. Alternatively, the barbs 606c may be separately formed of the same or different material as the nail legs 606b and bonded to the nail legs 606b. For example, the material of the barbs 606c may be 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.

[0100] Figure 6 The illustrated embodiment uses an elastic compression deformation component to provide the thrust required to fire the staplers, thereby simplifying the transmission structure of the stapler and reducing the material requirements for the stapler magazine, thereby helping to reduce the structural complexity and processing difficulty of the stapler and reducing production costs.

[0101] Figure 7 FIG. 2 is a schematic diagram of a staple assembly according to another embodiment of the present disclosure. Figure 7As shown, a plurality of stapler assemblies 700a, 700b, 700c, ..., 700n share a same actuating rod 703, wherein n is greater than or equal to 3 and less than or equal to 60.

[0102] exist Figure 7 In the illustrated embodiment, each of the staples 700a, 700b, 700c, ..., 700n is connected to Figure 6 The embodiments shown are similar and will not be described again here.

[0103] when Figure 7 When the plurality of staple assemblies of the illustrated embodiment are fired for the first time, the actuating rod 703 moves away from the blocking position in the staple assembly 700a under the control of a control device (not shown), and the compression spring included in the staple assembly 700a at least partially recovers from its compressed and deformed state, pushing the staples of the staple assembly 700a to pass through the tissue to be sutured and form staples, and then the sleeve in the staple assembly 700a and other components included therein fall off from the actuating rod 703, and the staple assembly 700b becomes the staple assembly of the plurality of staple assemblies. When the plurality of staple assemblies are fired again, the actuating rod 703 repeats the action of the first firing, and the staples included in the staple assembly 700b are fired, and then the sleeve in the staple assembly 700b and other components included therein fall off from the actuating rod 703, and the staple assembly 700c becomes the first of the remaining staple assemblies in the plurality of staple assemblies ... and so on, until the staples included in the last staple assembly 700n in the plurality of staple assemblies are fired.

[0104] In the above-mentioned embodiment, the firing process of each of the plurality of staple assemblies is similar to that of the embodiment shown in Embodiment 6, and will not be described in detail herein.

[0105] Figure 7 The illustrated embodiment uses an elastic compression deformation component to provide the thrust required to fire the staplers, thereby simplifying the transmission structure of the stapler and reducing the material requirements for the stapler magazine, thereby helping to reduce the structural complexity and processing difficulty of the stapler and reducing production costs.

[0106] There are a few points to note about this disclosure.

[0107] (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.

[0108] (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.

[0109] (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.

[0110] The above description is merely an exemplary embodiment of the present disclosure and is 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. An actuating device for firing staples, comprising: an elastic compression deformation component, wherein the elastic compression deformation component is configured to be in a compression deformation state when the actuating device is in an unfired state, and is released to at least partially recover from the compression deformation state when the actuating device is fired, thereby providing a pushing force for the staples; A sleeve, wherein the sleeve has a side wall, a cavity surrounded by the side wall, and a first end that is at least partially closed and a second end that is at least partially open, a first through hole is provided on the side wall of the sleeve, the first through hole divides the cavity into a first space between the first end and the first through hole and a second space between the second end and the first through hole, wherein the sleeve is formed of a rigid material that is harmless to the human body; and an actuating rod, wherein the actuating rod is arranged to pass through the first through hole when the actuating device is in the unfired state, and is divided into a first part located in the cavity of the sleeve and a second part located outside the sleeve from a position where the actuating rod contacts the first through hole, Wherein, when the actuating device is in an unfired state, the elastic compression-deformation component is accommodated in the first space in the sleeve in the compression-deformation state, and is blocked by the first portion of the actuating rod to keep the elastic compression-deformation component in the compression-deformation state; When the actuating device is fired, the first portion of the actuating rod moves through the first through hole and 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 compression deformation state.

2. The actuating device according to claim 1, 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.

3. The actuating device according to claim 1, wherein: The second space is configured to accommodate the stapler.

4. The actuating device according to any one of claims 1 to 3, further comprising a baffle, wherein: The blocking piece is located in the sleeve and is configured to be able to slide in the sleeve. When the actuating device is in an unfired state, the blocking piece is located between the elastic compression deformation component and the first portion of the actuating rod. When the actuating device is fired, the blocking piece is pushed by the deformation recovery force of the elastic compression deformation component, thereby providing a thrust for the stapler.

5. The actuating device according to claim 4, wherein: The blocking piece is connected to an end of the elastic compression deformation component close to the first portion of the actuating rod.

6. The actuating device according to claim 4, wherein: The area of ​​the blocking piece is larger than the opening area of ​​the second end of the sleeve, so as to prevent the blocking piece from falling off through the second end of the sleeve.

7. The actuating device according to any one of claims 1 to 3, wherein: The actuating rod is a worm screw with a first thread.

8. The actuating device according to claim 7, wherein: The first through hole has a second thread, and the second thread is engaged with the first thread of the actuating rod.

9. The actuating device according to any one of claims 1 to 3, wherein: A second hole opposite to the first through hole is also provided on the side wall of the sleeve, and the second hole is a through hole or a blind hole. The actuating rod is configured to pass through the second hole when the actuating device is in the unfired state.

10. The actuating device according to claim 9, wherein: The actuating rod is a worm with a first thread; and the second hole has a third thread, the third thread meshing with the first thread of the actuating rod.

11. The actuating device according to any one of claims 1 to 3, wherein: The sleeve is a hollow straight cylinder or a hollow at least partially curved cylinder.

12. The actuating device according to claim 11, wherein: The sleeve is a hollow arc-shaped sleeve, and the arc is larger than a semicircular ring.

13. The actuating device according to claim 11, wherein: The sleeve further includes a space at the first end for accommodating the tip of the staple after firing.

14. The actuating device according to claim 13, further comprising a sensor or a lock, wherein: The sensor or the lock is arranged in the space for accommodating the tip of the staple after firing.

15. The actuating device according to claim 11, wherein: The sleeve is a hollow question mark-shaped sleeve, and the question mark-shaped sleeve includes an arc-shaped portion and a handle portion connected to the arc-shaped portion. The arc-shaped portion of the question mark-shaped cylinder is larger than or equal to a semicircular ring and is used to accommodate the anastomotic staples. The length of the handle portion of the question mark-shaped cylinder is substantially equal to the length of the elastic compressive deformation component in the compressive deformation state, and is used to accommodate the elastic compressive deformation component in the compressive deformation state.

16. A stapler assembly, comprising: An actuating device as claimed in any one of claims 1 to 15; and At least one staple is housed in the sleeve of the actuation device.

17. The stapler assembly according to claim 16, wherein: The stapler comprises a staple cap and a staple leg, wherein the staple leg has a non-return structure.

18. The stapler assembly according to claim 17, wherein: The non-return structure is a rigid or flexible barb.

19. A stapler assembly set, comprising a plurality of stapler assemblies according to any one of claims 16 to 18, wherein the plurality of stapler assemblies share a common actuating rod.

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