Mechanical safety devices and medical equipment

Abstract

The present disclosure provides a mechanical safety device and medical equipment. The mechanical safety device includes a support body, a firing body, a safety portion, and a trigger body. Each safety body is an integrally formed structure, and the safety portion is clamped in the support body along at least one side of the slideway; the trigger body corresponds to one side of the firing body relative to the safety portion, is arranged on the other side of the safety portion along the extension direction of the slideway, and moves along the support body in the direction of the slideway, and forms a trigger state and a separation state with the safety portion; wherein, in the trigger state, the trigger body moves toward the safety portion along the extension direction of the slideway, pushes the safety portion toward at least one side of the slideway, so that the slideway is open relative to the firing body, and the firing body moves along the slideway through the position of the safety portion and contacts the trigger body to realize the firing action; in the separation state, the safety portion keeps the slideway closed relative to the firing body, blocks the movement of the firing body along the slideway to realize the firing safety.

Description

Technical Field

[0001] The present disclosure relates to the technical field of medical devices, and in particular to a mechanical safety device and medical equipment. Background Art

[0002] Staplers are used to sever, excise, and / or establish anastomosis of human tissue and are suitable for a variety of open or minimally invasive surgeries, such as linear cutting staplers. The linear cutting stapler comprises upper and lower jaws that can be opened and closed. The lower jaw is provided with an anvil. A staple cartridge seat is disposed on the upper jaw, and a staple cartridge seat is provided with a staple cartridge and a cutting knife that can move relative to the staple cartridge. The staple cartridge seat and the staple cartridge have knife grooves for the movement of the cutting knife. The staple cartridge is provided with suture staples on both sides of the knife groove. In addition, the staple cartridge also comprises a staple magazine, suture staples, a staple pusher slider, a staple pusher plate, a staple cartridge protective cover, and the like.

[0003] After the upper and lower clamps are closed and the anvil and the staple magazine are clamped tightly on the human tissue to be sutured, the firing device pushes the cutting knife and the staple-pushing slider to push out the suture staples on both sides of the staple magazine in sequence, and finally the human tissues on both sides of the staple magazine are sutured separately, and the cutting knife is used to cut the suture tissues between the two sides, completing the two actions of suturing and cutting at the same time.

[0004] If the doctor fires the linear cutting stapler by mistake when operating it (before the staple cartridge is installed, or after the cutting and suturing action is completed and the cutting knife is reset), the cutting knife fires and cuts the tissue without first performing the suturing action, which will cause accidental injury to the patient, thus resulting in a surgical accident. In order to avoid accidents, there is a mechanical safety device in the prior art, which mainly includes a secondary firing lock, a secondary firing lock shaft, a cutting knife, a staple cartridge seat and a staple cartridge, etc. Among them, two symmetrical secondary firing lock shafts are fixed on the staple cartridge seat, and each secondary firing lock shaft is equipped with a secondary firing lock, a secondary firing lock reset spring and a secondary firing lock fixing cover, etc. Before firing, the cutting knife is located behind the secondary firing lock (here, the direction of movement of the cutting knife during firing can be defined as forward, the same below). The staple cartridge is a detachable component, which is installed in front of the secondary firing lock when in use. The staple cartridge is provided with a protective cover and a nail pushing slider, etc. Among them, the secondary firing lock of the existing mechanical safety device includes various parts such as a blocking seat, a rotating shaft, a blocking member, a torsion spring and a fixing member. The overall structure is complex, the components are numerous and small, and the installation and processing technology is complicated. In addition, due to the large number of parts, the rotating shaft is very thin and inconvenient to process, resulting in a small load-bearing capacity. There is a certain probability that the safety device will fail due to structural damage. Summary of the Invention

[0005] (1) Technical issues to be solved

[0006] In order to solve at least one of the above-mentioned technical problems caused by the large number, smallness and complexity of the secondary firing lock components of the mechanical safety device of the stapler in the above-mentioned prior art, the present disclosure provides a mechanical safety device and a medical device.

[0007] (2) Technical solution

[0008] One aspect of the present disclosure provides a mechanical safety device, which includes a support body, a firing body, a safety portion, and a trigger body. The support body has a slide extending along its length, constituting a support structure of the mechanical safety device; the firing body is located in the slide of the support body and moves along the slide; each of the safety bodies in the safety portion is an integrally formed structure, and the safety portion is symmetrically mounted in the support body along at least one side of the slide; the trigger body corresponds to one side of the firing body opposite to the safety portion, is disposed on the other side of the safety portion along the extension direction of the slide, and moves along the support body in the direction of the slide, and forms a triggered state and a separated state with the safety portion;

[0009] Among them, in the triggered state, the trigger body moves toward the safety part along the extension direction of the slide, pushing the safety part to at least one side of the slide, so that the slide is open relative to the firing body, so that the firing body moves along the slide through the position of the safety part and contacts the trigger body to realize the firing action; in the separated state, the safety part keeps the slide closed relative to the firing body, blocks the movement of the firing body along the slide to realize the firing safety.

[0010] According to an embodiment of the present disclosure, the support body includes a support base and a connecting cover. The support base, serving as the main body of the support structure, has a defined rotation hole that cooperates with the safety portion. The connecting cover has a fixed rotation hole that cooperates with the safety portion and is located on the support base at one end near the firing body, covering the safety portion between the support base and the connecting cover, while also connecting the support base and the firing body.

[0011] According to an embodiment of the present disclosure, each safety body in the safety section includes a blocking portion and a triggering portion. The blocking portion is an arm-shaped columnar structure that constitutes the structural main body of the safety body and is used to keep the blocking portion of the safety section closed in a direction perpendicular to the extension direction of the slideway when in a separated state, thereby keeping the slideway sealed relative to the firing body. The triggering portion is another arm-shaped columnar structure located below the blocking portion and is used to be pushed by the triggering body in the triggered state, causing the blocking portion of the safety section to open to at least one side of the slideway, thereby keeping the slideway open relative to the firing body.

[0012] According to an embodiment of the present disclosure, the blocking portion includes a cylinder and an extension arm. The extension arm is a column structure extending from the side surface of the cylinder toward the inside of the slide in a direction perpendicular to the slide in the separated state, and is used to keep the slide closed relative to the firing body in the separated state.

[0013] According to an embodiment of the present disclosure, the end of the extension arm away from the cylinder is a first flush end, and the first flush end has a first oblique notch on the side close to the trigger body. There is a gap between the first flush ends of at least one extension arm corresponding to each other of the safety part, and the width of the gap is smaller than the minimum width of the firing body.

[0014] According to an embodiment of the present disclosure, the trigger portion includes an arc-shaped cylindrical body and a trigger arm. The arc-shaped cylindrical body is disposed below the cylindrical body of the blocking portion; the trigger arm is disposed below the extension arm of the blocking portion along its extension direction. When in the triggered state, the trigger body contacts and pushes the extension arm of the blocking portion of the safety portion to open toward at least one side of the slideway, thereby maintaining the slideway open relative to the firing member.

[0015] According to an embodiment of the present disclosure, the end of the trigger arm away from the arc cylinder is a second flush end, and the second flush end has a second oblique notch on a side close to the trigger body.

[0016] According to an embodiment of the present disclosure, in the separated state, in the direction parallel to the slide, the maximum diameter of the arc cylinder of the trigger part is smaller than the diameter of the cylinder of the blocking part, and the width of the trigger arm of the trigger part is smaller than the width of the extension arm of the blocking part, forming an arc-shaped cylindrical space below the blocking part and on one side of the trigger part; in the separated state, in the direction perpendicular to the slide, the length of the trigger arm is smaller than the length of the extension arm.

[0017] According to an embodiment of the present disclosure, the trigger body includes at least one push pin. The at least one push pin matches the corresponding at least one trigger portion of the safety portion, and the triggering surface between each of the at least one push pin and the corresponding trigger portion is a structural surface that matches the arc-shaped cylindrical space on one side of the trigger portion. The surface of each push pin corresponding to another push pin is parallel to the extension direction of the slideway.

[0018] According to an embodiment of the present disclosure, each safety body in the safety section further includes a fixed rotation shaft and a limited rotation shaft. The fixed rotation shaft is protruding from the center of the upper surface of the cylindrical body of the blocking section and is rotatably connected to the fixed rotation hole on the connection cover of the support body; the limited rotation shaft is protruding from the center of the lower surface of the cylindrical body of the blocking section below the arc cylinder of the trigger section and is rotatably connected to the limited rotation hole of the support base of the support body.

[0019] According to an embodiment of the present disclosure, the fixed shaft includes a slot and a flange. The slot is formed in the middle of the fixed shaft cylinder along its length; the flange protrudes outward along the outer edge of the fixed shaft away from the top of the cylinder. One end of the torsion spring of the mechanical safety device is fixed to the bottom of the slot, and the other end abuts at least one side wall of the support base of the support body or at least one side wall of the connection cover of the support body.

[0020] Another aspect of the present disclosure provides a medical device, which includes the above-mentioned mechanical safety device, wherein the medical device includes a stapler.

[0021] (3) Beneficial effects

[0022] The present disclosure provides a mechanical safety device and medical device. The mechanical safety device includes a support body, a firing body, a safety portion, and a trigger body. The support body has a slide extending along its length, constituting the support structure of the mechanical safety device. The firing body is located in the slide of the support body and moves along the slide. Each safety body in the safety portion is an integrally formed structure, and the safety portion is symmetrically mounted in the support body along at least one side of the slide. The trigger body is located on the other side of the safety portion along the extension direction of the slide, corresponding to one side of the firing body opposite the safety portion. The trigger body moves along the support body in the direction of the slide and forms a triggered state and a separated state with the safety portion. In the triggered state, the trigger body moves toward the safety portion along the extension direction of the slide, pushing the safety portion toward at least one side of the slide, thereby opening the slide relative to the firing body, allowing the firing body to move along the slide past the safety portion and contact the trigger body to trigger the firing action. In the separated state, the safety portion keeps the slide closed relative to the firing body, blocking the movement of the firing body along the slide to achieve the firing safety. Therefore, compared with traditional designs with complex structural forms, the above-mentioned mechanical safety device disclosed in the present invention has fewer parts, improves processing and installation processability, and enhances structural bearing capacity, making it more stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematically shows a structural exploded view (partial) of a mechanical safety device according to an embodiment of the present disclosure, wherein the firing body 102 and the trigger body 104 are not fully shown;

[0024] Figure 2 The following schematically shows a perspective view of the structure of the fuse 103 according to an embodiment of the present disclosure;

[0025] Figure 3A Schematically shows the corresponding embodiment of the present disclosure Figure 2 A side view of the structure of the fuse body 103 is shown;

[0026] Figure 3B Schematically shows the corresponding embodiment of the present disclosure Figure 2 Another structural component side view of the safety body 103 is shown;

[0027] Figure 3C Schematically shows the corresponding embodiment of the present disclosure Figure 2 A bottom view of the structure of the fuse body 103 is shown;

[0028] Figure 4 A schematic perspective view of the structure of the trigger body 104 according to an embodiment of the present disclosure is shown;

[0029] Figure 5 Schematically shows the corresponding embodiment of the present disclosure Figure 1 The structural composition of the mechanical safety device shown is a three-dimensional diagram (partial).

[0030] Figure 6A Schematically shows the corresponding embodiment of the present disclosure Figure 1 A bottom view of the structure of the safety body 103 and the connecting cover 120 in the triggered state;

[0031] Figure 6B Schematically shows the corresponding embodiment of the present disclosure Figure 1 A top view of the structure of the safety body 103 and the connecting cover 120 in the triggered state;

[0032] Figure 7A Schematically shows the corresponding embodiment of the present disclosure Figure 1 A bottom view of the structure of the safety body 103 and the connecting cover 120 in the separated state;

[0033] Figure 7B Schematically shows the corresponding embodiment of the present disclosure Figure 1 A top view of the structure of the safety body 103 and the connecting cover 120 in the separated state;

[0034] Figure 8 Schematically shows the corresponding embodiment of the present disclosure Figure 4 A three-dimensional diagram of the structure between the safety body 103 and the push pin 410 in the triggered state; and

[0035] Figure 9 Schematically shows the corresponding embodiment of the present disclosure Figure 4 The structure between the safety body 103 and the push pin 410 in the triggered state is shown in a three-dimensional diagram. DETAILED DESCRIPTION

[0036] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0037] It should be noted that any implementations not shown or described in the drawings or the main text of the specification are known to those skilled in the art and are not described in detail. Furthermore, the definitions of the various elements and methods described above are not limited to the specific structures, shapes, or methods described in the embodiments; those skilled in the art may easily modify or replace them.

[0038] It should also be noted that directional terms such as "upper," "lower," "front," "back," "left," and "right" mentioned in the embodiments are merely references to the directions in the accompanying drawings and are not intended to limit the scope of protection of this disclosure. Throughout the drawings, identical elements are represented by identical or similar reference numerals. Conventional structures or configurations will be omitted where they may cause confusion in understanding this disclosure.

[0039] Furthermore, the shapes and sizes of the components in the figures do not reflect the actual sizes and proportions, but are merely illustrative of the contents of the embodiments of the present disclosure. In addition, in the claims, any reference signs placed between brackets should not be construed as limiting the claims.

[0040] Furthermore, the word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.

[0041] The use of ordinal numbers such as "first," "second," "third," etc. in the specification and claims to modify corresponding elements does not in itself mean that the elements have any ordinal number, nor does it represent the order of one element relative to another or the order in the manufacturing method. The use of these ordinal numbers is only used to clearly distinguish one element with a certain name from another element with the same name.

[0042] Those skilled in the art will appreciate that the modules in the devices of the embodiments may be adaptively changed and placed in one or more devices different from the embodiments. The modules or units or components in the embodiments may be combined into one module or unit or component, and further they may be divided into a plurality of submodules or subunits or subcomponents. All features disclosed in this specification (including the accompanying claims, abstract and drawings) and all processes or units of any method or device so disclosed may be combined in any combination, except that at least some of such features and / or processes or units are mutually exclusive. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstract and drawings) may be replaced by an alternative feature providing the same, equivalent or similar purpose. Furthermore, in a unit claim enumerating a number of means, several of these means may be embodied by the same item of hardware.

[0043] Similarly, it should be understood that in order to streamline the present disclosure and aid in understanding one or more of the various disclosed aspects, in the above description of exemplary embodiments of the present disclosure, various features of the present disclosure are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed approach should not be interpreted as reflecting an intention that the claimed disclosure requires more features than are expressly recited in each claim. Rather, as reflected in the claims below, the disclosed aspects lie in less than all the features of the individual embodiments disclosed above. Accordingly, the claims that follow the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of the present disclosure.

[0044] In order to solve at least one of the above-mentioned technical problems caused by the large number, smallness and complexity of the secondary firing lock components of the mechanical safety device of the stapler in the above-mentioned prior art, the present disclosure provides a mechanical safety device and a medical device.

[0045] like Figures 1-9 As shown, one aspect of the present disclosure provides a mechanical safety device 100 , which includes a support body 101 , a firing body 102 , a safety portion and a trigger body 104 .

[0046] The support body 101 has a slide extending along the length direction X, constituting a support structure of the mechanical safety device;

[0047] The firing body 102 is located in the slideway of the support body 101 and moves along the slideway;

[0048] Each safety body 103 in the safety part is an integrally formed structure, and the safety part is symmetrically clamped in the support body 101 along at least one side of the slideway;

[0049] The trigger body 104 corresponds to the side of the firing body 102 opposite to the safety portion, is arranged on the other side of the safety portion along the extension direction of the slide, and moves along the support body 101 in the direction of the slide, and forms a triggered state and a separated state with the safety portion;

[0050] Among them, in the triggered state, the trigger body 104 moves toward the safety part along the extension direction of the slide, pushing the safety part to at least one side of the slide, so that the slide is open relative to the firing body 102, so that the firing body 102 moves along the slide through the position of the safety part and contacts the trigger body 104 to realize the firing action; in the separated state, the safety part keeps the slide closed relative to the firing body 102, blocks the movement of the firing body 102 along the slide to realize the firing safety.

[0051] The support body 101 is a shell structure that can form a storage space for accommodating the safety portion and the trigger body 104. The trigger body 104 can move forward and backward relative to the safety body 103 along the longitudinal direction X within the storage space, thereby triggering or separating from the safety body 103. A slide is provided at the midline of the longitudinal direction X of the support body 101. The slide can be used to facilitate the forward and backward movement of the firing body 102, thereby achieving contact between the firing body 102 and the trigger body 104, thereby enabling the firing body 102 to trigger the trigger body 104.

[0052] The firing body 102 may be a long strip-shaped structure, the main body of which may be a flexible structure or a tough structure, and the top of which may have a firing structure to trigger the trigger body 104 .

[0053] The safety section includes at least one safety body 103, each of which is an integrally formed structure and can be symmetrically positioned within the support body 101 on at least one side of the slideway. The primary function of the safety body 103 is to be pushed aside by the trigger body 104 when in the triggered state, allowing the firing body 102 to easily pass through the slideway where the safety body 103 is positioned and continue along the slideway to contact the trigger body 104, triggering the trigger body 104. In the separated state, the safety body 103 is separated from the trigger body 104, and the two safety bodies 103 symmetrically positioned along the slideway block the slideway, preventing the top firing structure of the firing body 102 from passing through the slideway position of the safety body 103 and thus contacting the trigger body 104. In other words, the safety body 103 acts as a trigger safety. Among them, the number of the insurance body 103 in the insurance part can be one, that is, a single insurance body 103 realizes the firing safety effect of the firing body 102; as a preference, the insurance body 103 in the embodiment of the present disclosure can be set to two, and can be symmetrically clamped in the support body 101 along both sides of the slide. For details, please refer to Figures 1-9 The mechanical safety device of the embodiment of the present disclosure is shown.

[0054] Since each safety body 103 is an integrally formed structure, it has fewer parts than the existing firing safety mechanism with a complex structure, and has a stronger structural bearing capacity and simpler processing and installation processes, thereby greatly improving the structural stability and reliability of the overall mechanical safety device.

[0055] The trigger body 104 is a trigger structure, such as the stapler cartridge execution structure of the stapler, which can be triggered by the firing structure of the firing body 102, thereby realizing the corresponding trigger action and performing the corresponding operation, such as the suturing and cutting of the stapler. The trigger body 104 is a supporting structure as a whole, and a structure capable of performing the trigger action can be arranged inside it. The trigger body 104 can move forward and backward along the longitudinal direction X in the support groove of the support body 101, thereby achieving contact and separation with the safety body 103, thereby pushing and closing the safety body 103, so that the slideway is unobstructed and blocked relative to the firing body 102.

[0056] Therefore, compared with traditional designs with complex structural forms, the above-mentioned mechanical safety device disclosed in the present invention has fewer parts, improves processing and installation processability, and enhances structural bearing capacity, making it more stable and reliable.

[0057] like Figure 1 and Figure 5-7B As shown, according to an embodiment of the present disclosure, the support body 101 includes a support base 110 and a connection cover 120 .

[0058] The support seat 110 serves as the main body of the support structure and has a limited rotation hole that cooperates with the safety part;

[0059] The connecting cover 120 has a fixed rotating hole that cooperates with the safety part. The cover is arranged on one end of the support seat 110 close to the firing body 102. The safety part is covered between the support seat 110 and the connecting cover 120, and the support seat 110 and the firing body 102 are connected at the same time.

[0060] The support base 110 has a corresponding support groove, which can be used to arrange the trigger body 104 and the like.

[0061] The end of the connecting cover 120 near the trigger body 104 has a fixed rotation hole, which allows the safety body 103 to be positioned between the connecting cover 120 and the bottom wall of the support base 110. The limiting rotation hole provided on the bottom wall of the support base 110 can also cooperate with the fixed rotation hole to achieve the restraint of the safety body 103 in the support body 101. Therefore, the safety body 103 can only rotate about its own rotation axis between the connecting cover 120 and the support base 110, and cannot move forward and backward, left and right, or up and down.

[0062] like Figures 1-3C and Figure 5-Figure 9 As shown, according to the embodiment of the present disclosure, each safety body 103 in the safety unit includes a blocking portion 310 and a triggering portion 320 .

[0063] The blocking portion 310 is an arm-shaped columnar structure, which constitutes the main structure of the safety body 103. When in the separated state, the blocking portion 310 of the safety part remains closed in a direction perpendicular to the extension direction of the slideway, thereby keeping the slideway closed relative to the firing body.

[0064] The trigger portion 320 is another arm-shaped columnar structure, located below the blocking portion 310, and is used to be pushed by the trigger body 104 in the triggered state, so that the blocking portion 310 of the safety portion opens to at least one side of the slide, keeping the slide open relative to the firing body.

[0065] Therefore, in the separated state, the trigger body 104 and the trigger portion 320 are not in contact, so that the trigger portion 320 does not change. At this time, the blocking portion 310 is directly blocked in the slideway. With the help of the two symmetrical blocking portions 310 of the two safety bodies 103, the firing body 102 in the slideway can be stably blocked, thereby blocking the slideway. Conversely, in the triggered state, the trigger body 104 can move along the longitudinal direction X toward the trigger portion 320 when subjected to an external force, and contact the trigger portion 320 to apply force to the trigger portion 320, causing the trigger portion 320 to rotate, thereby driving the blocking portion 310 to rotate synchronously, so that the blocking portion 310 cannot be in the slideway. In this way, the slideway blockage can be released, allowing the firing body 102 to directly pass through the blockage of the safety body 103 along the slideway and contact the trigger body 104, thereby triggering the trigger body 104.

[0066] like Figures 1-3C and Figure 5-Figure 9 As shown, according to an embodiment of the present disclosure, the blocking portion 310 includes a cylindrical body 311 and an extension arm 312 .

[0067] The extension arm 312 is a columnar structure extending from the side surface of the cylinder 311 in the direction perpendicular to the slide toward the slide in the separated state, and is used to keep the slide closed relative to the firing body in the separated state.

[0068] The cylindrical body 311 is mainly used to facilitate the safety body 103 to rotate in the support body 101. The extension arm 312 extends outward from the surface of the cylindrical body 311 to form a blocking structure for the firing body 102. When the cylindrical body 311 is driven to rotate, it will drive the extension arm 312 to block or open the slideway.

[0069] like Figures 1-3C and Figure 5-Figure 9 As shown, according to an embodiment of the present disclosure, the end of the extension arm 312 away from the cylinder 311 is a first flush end, and the first flush end has a first oblique notch on the side close to the trigger body 104, and a gap is provided between the first flush ends of at least one extension arm 312 corresponding to each other of the safety portion, and the width of the gap is smaller than the minimum width of the firing body 102.

[0070] Only when the two symmetrically arranged safety bodies 103 maintain a first oblique notch on the same side of the first flush end of each extension arm 312 as the first flush end of the opposite extension arm 312 can it be ensured that when the extension arm 312 deflects along the length direction X of the slide, the two oppositely arranged extension arms 312 can rotate and open better without structural interference during rotation, resulting in a situation where the extension arms 312 cannot be opened. Similarly, when returning to the original position, the situation where the extension arms 312 cannot be closed and blocked will not occur.

[0071] The top ends of the two extension arms 312 are the first flush ends. Only when the gap between the two first flush ends is smaller than the minimum width of the firing body 102 (generally, its main structure is thinner), can it be ensured that in the slide, the extension arms 312 can effectively block the firing body 102 in a separated state, so that the firing body 102 cannot pass through the position of the slide blocked by the extension arms 312.

[0072] like Figures 1-3C and Figure 5-Figure 9 As shown, according to an embodiment of the present disclosure, the trigger portion 320 includes an arc column 321 and a trigger arm 322 .

[0073] The arc column 321 is disposed below the cylindrical body 311 of the blocking portion 310 ;

[0074] The trigger arm 322 is arranged below the extension arm 312 along the extension direction of the extension arm 312 of the blocking part 310, and is used to be contacted and pushed by the trigger body 104 in the triggered state, so that the extension arm 311 of the blocking part 310 of the safety part opens to at least one side of the slide, keeping the slide open relative to the firing body 102.

[0075] The arc cylinder 321 is located below the cylinder 311 and can provide a support for the cylinder 311 without hindering the rotation of the cylinder 311 .

[0076] The extension direction of the trigger arm 322 is parallel to the extension direction of the extension arm 312, and drives the extension arm 312 to rotate and close or rotate and open in the slideway. The trigger arm 322 has a width dimension a1 in a direction E perpendicular to its extension direction, and the extension arm 312 has a width dimension b1 in the direction E perpendicular to its extension direction, where a1 < b1. Furthermore, the maximum width dimension a2 of the arc cylinder 321 in the direction E is less than the maximum width dimension b2 of the cylinder 311 in the direction E. In other words, the arc cylinder 321 exposes a portion of the lower surface of the cylinder 311, and the trigger arm 322 exposes a portion of the lower surface of the extension arm 312, thereby creating a trigger space below the blocking portion 310 and on the side of the trigger portion 320.

[0077] With the help of the trigger space, in the trigger state, the trigger body 104 can make contact with the side wall surface of the trigger arm 322 of the trigger part 320 by means of the trigger space, and at the same time push the trigger arm 322 to avoid contact with the side of the arc column 321, thereby blocking the trigger arm 322 and preventing it from returning to its original position. At the same time, the trigger part 320 drives the blocking part 310 to produce a synchronous rotation action, thereby opening the slide and keeping the slide unobstructed. Figures 6A-7B shown.

[0078] Accordingly, in the separated state, the trigger body 104 exits the trigger space, so that the trigger portion 320 can be restored to its original position by the restoring force, and at the same time, the trigger portion 320 drives the blocking portion 310 to produce a synchronous rotation action and also restore its original position, so that the extension arm 312 of the blocking portion 310 can be vertically arranged in the slideway to achieve the re-blocking of the slideway, such as Figures 6A-7B shown.

[0079] like Figures 1-3C and Figure 5-Figure 9 As shown, according to an embodiment of the present disclosure, the end of the trigger arm 322 away from the arc column 321 is a second flush end, and the second flush end has a second oblique notch on a side close to the trigger body 104 .

[0080] The second oblique notch allows the trigger body 104 to better contact the inclined surface of the second flush end of the second oblique notch when triggering the trigger arm 322, thereby more smoothly inserting into the trigger space below the blocking portion 310 and to the side of the trigger portion 320. This effectively ensures effective contact between the trigger body 104 and the sidewalls of the trigger space formed by the trigger portion 320 and the arc column 321, thereby improving the rotational stability of the structure.

[0081] like Figures 1-3C and Figure 5-Figure 9 As shown, according to the embodiment of the present disclosure, in the separated state, in the direction parallel to the slide, the maximum diameter of the arc cylinder 321 of the trigger portion 320 is smaller than the diameter of the cylinder 311 of the blocking portion 310, and the width of the trigger arm 322 of the trigger portion 320 is smaller than the width of the extension arm 312 of the blocking portion 310, forming an arc-shaped cylindrical space below the blocking portion 310 and on one side of the trigger portion 320; in the separated state, in the direction perpendicular to the slide, the length of the trigger arm 322 is smaller than the length of the extension arm 312.

[0082] As mentioned above, the triggering space located on the side of the triggering portion 320 and below the blocking portion 310 is the aforementioned arc-shaped cylindrical space.

[0083] With the help of this arc-shaped cylindrical space, the trigger body 104 can achieve better and more stable contact with the safety body 103. At the same time, it can also ensure that in the triggered state or in the firing state of the firing body 102, the trigger body 104 does not occupy the space of the slide, so that the slide remains completely open, which is conducive to the smooth passage of the firing body 102 and the firing action of the trigger body 104.

[0084] Because the length a3 of the trigger arm 322, perpendicular to the E direction, is less than the length b3 of the extension arm 312, a height difference exists between the second flush end and the first flush end of the same safety body 103. This creates a gap with a second oblique notch between the two second flush ends of the two symmetrically arranged safety bodies 103. This gap, in addition to the aforementioned second oblique notch, allows the trigger body 104 to more smoothly break through the resistance of the trigger portion 320, achieving more stable and smooth contact and triggering with the trigger portion 320.

[0085] like Figures 1-9 As shown, according to an embodiment of the present disclosure, the trigger body 104 includes a pin-pushing slider 410 .

[0086] At least one push pin of the push pin slider 410 matches with at least one corresponding trigger part 320 of the safety part, and the trigger surface between each push pin of the at least one push pin and the corresponding trigger part 320 is a structural surface that matches the arc-shaped cylindrical space on one side of the trigger part 320, and the surface of each push pin corresponding to another push pin is a surface parallel to the extension direction of the slide.

[0087] The push pin slider 410 serves as the front end trigger structure of the trigger body 104. It can move relative to the length direction X along the support groove of the support seat 110 of the support body 101, so that it is subjected to force to trigger the trigger part 320 in the trigger state. Two mutually symmetrical push pins are arranged at the lower position of the trigger arm 322 corresponding to the trigger part 320. The push pins are used to contact the corresponding two trigger arms 322 and push the trigger arms 322.

[0088] Among them, each push pin is located in the trigger space below the blocking part 310 and on the side of the trigger part 320 in the triggered state, and is in contact with the arc-shaped cylindrical wall surface of the trigger part 320 in the trigger space, thereby achieving the locking of the trigger part 320 by means of the undulating design of its arc-shaped cylindrical wall surface, ensuring the stability of the trigger part 320 in the triggered state, that is, ensuring the stability of the safety body 103.

[0089] Among them, the surfaces of the two corresponding push pins are flush surfaces, and are parallel to the extension direction X of the slide, and are also flush with the side wall surface of the slide, so as to ensure that the structural impact of the push pins on the slide is reduced to a minimum, which is conducive to keeping the slide unobstructed in the triggered state, and at the same time will not cause structural interference with the firing body 102 passing through the space between the push pins.

[0090] like Figures 1-3C and Figure 5-Figure 9 As shown, according to the embodiment of the present disclosure, each safety body 103 in the safety portion further includes a fixed rotation shaft 330 and a limiting rotation shaft 340 .

[0091] The fixed rotation shaft 330 is protruded from the center of the upper surface of the cylindrical body 311 of the blocking portion 310 and is rotatably connected to the fixed rotation hole on the connection cover 120 of the support body 101;

[0092] The limiting rotation shaft 340 is convexly provided below the arc column 321 of the triggering portion 320 corresponding to the center of the lower surface of the cylinder 311 of the blocking portion 310 , and is rotationally connected to the limiting rotation hole of the support seat 110 of the support body 101 .

[0093] It should be noted that the fuse body 103 is an integrally molded design. In other words, the fixed shaft 330, the limiting shaft 340, the blocking portion 310, and the trigger portion 320 of the fuse body 103 are all integrally molded, rather than being separate components. These components can be formed together into a single, integrated structure through the same manufacturing process. This greatly simplifies the structural composition and provides greater structural stability.

[0094] The top end of the fixed shaft 330 can be exposed outside the structure of the connection cover 120, thereby realizing a rotational connection between the fixed shaft 330 and the connection cover 120, so that the fixed shaft 330 can rotate relative to the connection cover 120.

[0095] Correspondingly, the limiting rotation shaft 340 can generally be rotatably connected in the limited rotation hole of the support seat 110, so that it can be fixed in the space of the support body 101 between the support seat 110 and the connection cover 120, thereby increasing the rotational stability of the safety body 103 with the help of the support body 101.

[0096] like Figures 1-3C and Figure 5-Figure 9 As shown, according to the embodiment of the present disclosure, the fixed shaft 330 includes a slot 331 and a flange 332 .

[0097] The notch 331 is formed in the middle of the column of the fixed shaft 330 along the length direction of the fixed shaft 330;

[0098] The flange 332 protrudes outward along the outer edge of the fixed rotation shaft 330 away from the top of the cylinder 311;

[0099] One end of the torsion spring 510 of the mechanical safety device is fixed to the bottom of the notch 331 , and the other end abuts against at least one side wall of the support base 110 of the support body 101 or at least one side wall of the connection cover 120 of the support body 101 .

[0100] With one end of the torsion spring 510 secured to the notch 331 and the other end abutting against the support body 101, the trigger body 104's pusher slider 410 must overcome the elastic force of the torsion spring 510 when triggering the trigger portion 320 of the safety body 103, thereby pushing the safety body 103 open and keeping the slideway unobstructed. Once the pusher slider 410 of the trigger body 104 removes the external force and exits the trigger portion 320, the safety body 103 naturally returns to its original position due to the elastic force of the torsion spring 510, thereby blocking the slideway with the blocking portion 310 of the safety body 103.

[0101] In view of the safety body 103 of the mechanical safety device of the above-mentioned embodiment of the present invention, compared with the traditional solution with more complex structural components and structural design, the mechanical safety device of the present invention has redesigned a new structural form on the original basis, reduced the number of parts, improved the processing and installation processability, and enhanced the structural bearing capacity, making the firing safety device more stable and reliable; moreover, compared with the previous firing safety device, the structural bearing capacity is increased, making the safety device more stable and reliable; furthermore, compared with the previous firing safety device, the number of parts is greatly reduced, so that the installation process is simplified and the installation cost is reduced, and the structural strength of the parts is high, which greatly improves the processing processability.

[0102] Another aspect of the present disclosure provides a medical device, which includes the above-mentioned mechanical safety device, wherein the medical device includes a stapler.

[0103] For the stapler, the firing body 102 of the mechanical safety device disclosed herein may be the cutting knife of the stapler, the trigger body 104 may be the stapler magazine of the stapler, the support body 101 may be the stapler magazine seat of the stapler, and the safety body 103 may be used as a safety structure to limit the firing action of the cutting knife in the slide of the stapler magazine seat.

[0104] So far, the embodiments of the present disclosure have been described in detail with reference to the accompanying drawings.

[0105] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A mechanical safety device, wherein: include: A support body having a slide extending along the length direction, constituting a support structure of the mechanical safety device; a firing body, located in the slideway of the support body and moving along the slideway; A safety part, wherein each safety body in the safety part is an integrally formed structure, and the safety part is clamped in the support body along at least one side of the slideway; a trigger body, corresponding to a side of the firing body opposite to the safety portion, disposed on the other side of the safety portion along the extension direction of the slideway, and moving along the support body in the direction of the slideway, and forming a triggered state and a separated state with the safety portion; In the triggered state, the trigger body moves toward the safety portion along the extending direction of the slideway, pushing the safety portion toward at least one side of the slideway, so that the slideway is open relative to the firing body, allowing the firing body to move along the slideway past the position of the safety portion and contact the trigger body to achieve a firing action; in the separated state, the safety portion keeps the slideway closed relative to the firing body, blocking the movement of the firing body along the slideway to achieve a firing safety; Wherein, each insurance body in the insurance unit includes: The blocking portion is an arm-shaped columnar structure, forming the main structure of the safety body, and is used to keep the blocking portion of the safety body closed in a direction perpendicular to the extension direction of the slideway in the separated state, so as to keep the slideway closed relative to the firing body; The trigger portion is another arm-shaped columnar structure, located below the blocking portion, and is used to be pushed by the trigger body in the triggered state, so that the blocking portion of the safety portion opens to at least one side of the slideway, keeping the slideway open relative to the firing body; Wherein, the blocking portion includes: Cylinder, The extension arm is a columnar structure extending from the side surface of the cylinder in the direction perpendicular to the slide toward the slide in the separated state, and is used to keep the slide closed relative to the firing body in the separated state; The end of the extension arm away from the cylindrical body is a first flush end, and the first flush end has a first oblique notch on a side close to the trigger body. A gap is formed between the first flush ends of at least one corresponding extension arm of the safety portion, and the width of the gap is smaller than the minimum width of the trigger body. Wherein, the triggering unit includes: An arc cylinder is arranged below the cylindrical body of the blocking portion; a trigger arm, disposed below the extension arm along the extension direction of the extension arm of the blocking portion, and configured to be contacted and pushed by the trigger body in a triggered state, so that the extension arm of the blocking portion of the safety portion opens toward at least one side of the slideway, thereby keeping the slideway open relative to the firing body; Wherein, the end of the trigger arm away from the arc column is a second flush end, and the second flush end has a second oblique notch on a side close to the trigger body; In which, in the separated state, in the direction parallel to the slide, the maximum diameter of the arc cylinder of the trigger part is smaller than the diameter of the cylinder of the blocking part, and the width of the trigger arm of the trigger part is smaller than the width of the extension arm of the blocking part, forming an arc-shaped cylindrical space below the blocking part and on one side of the trigger part; in the separated state, in the direction perpendicular to the slide, the length of the trigger arm is smaller than the length of the extension arm.

2. The mechanical safety device according to claim 1, wherein: The support body comprises: A support seat, serving as the main body of the support structure, having a limited rotation hole matched with the safety portion; The connecting cover has a fixed rotating hole matched with the safety part, and is arranged on one end of the support seat close to the firing body. The safety part is arranged between the support seat and the connecting cover, and the support seat and the firing body are connected at the same time.

3. The mechanical safety device according to claim 1, wherein: The trigger body includes: A push pin slider, at least one push pin of the push pin slider matches at least one trigger part corresponding to the safety part, and the trigger surface between each push pin of the at least one push pin and the corresponding trigger part is a structural surface matching the arc-shaped cylindrical space on one side of the trigger part, and the surface of each push pin corresponding to another push pin is a surface parallel to the extension direction of the slide.

4. The mechanical safety device according to claim 1, wherein: Each insurance body in the insurance unit further includes: A fixed rotating shaft is convexly provided on the center of the upper surface of the cylindrical body of the blocking portion and is rotatably connected to the fixed rotating hole on the connecting cover of the supporting body; The limiting rotating shaft is convexly arranged below the arc cylinder of the triggering part and corresponds to the center of the lower surface of the cylindrical body of the blocking part, and is rotationally connected to the limiting rotating hole of the supporting seat of the supporting body.

5. The mechanical safety device according to claim 4, wherein: The fixed rotating shaft comprises: A notch is formed in the middle of the fixed shaft body along the length direction of the fixed shaft; a flange protruding outward along an outer edge of the fixed rotating shaft away from the top end of the cylinder; Among them, one end of the torsion spring of the mechanical safety device is fixed to the bottom of the slot, and the other end abuts against at least one side wall of the support base of the support body or at least one side wall of the connection cover of the support body.

6. A medical device, wherein: The mechanical safety device comprises the mechanical safety device according to any one of claims 1 to 5, wherein the medical device comprises a stapler.

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