Continuous clip applier

Abstract

The invention discloses a continuous firing clip applier, and relates to the technical field of medical equipment, the continuous firing clip applier is realized through cooperation of an unlocking assembly and a limiting piece, when the unlocking assembly is in a locking state, the limiting piece can lock a firing handle in a first firing state; when the unlocking assembly moves relative to the percussion handle to be switched into the unlocking state, locking of the limiting piece on the percussion handle can be relieved, and at the moment, external force is applied to the percussion handle, and then the percussion handle can be switched into the second percussion state from the first percussion state; therefore, misoperation in the first percussion state can be avoided through the arrangement of the unlocking assembly, the situation that the closing clamp is percussed by mistake due to the misoperation is prevented, clinical operation is better facilitated, and safety and effectiveness in the operation process are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more particularly, to a continuous firing clip applier. Background Art

[0002] In endoscopic surgery, closing clips are required to ligate and close human blood vessels and body cavity tissues, and the use of closing clips is specifically achieved through a clip applier.

[0003] In related technologies, the closing clip in the forceps tube is first pushed to the forceps mouth by the clip applier, and then the closing clip is closed, which requires two firings. During the actual clinical use process, there is no locking operation for the first firing. If the operator accidentally touches it, a second firing will be formed to close the closing clip, affecting the clinical treatment effect.

[0004] In summary, how to avoid misoperations during the use of the clip applier is an urgent problem to be solved by those skilled in the art at present. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a continuous firing clip applier, which can reliably lock the first firing state of the firing handle through the cooperation of a limiting member and an unlocking assembly, avoid the closing of the closing clip caused by misoperation, and ensure the treatment effect.

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] A continuous firing clip applier, comprising:

[0008] A housing;

[0009] A firing handle rotatably connected to the housing, and the firing handle can rotate to achieve the switching among an initial state, a first firing state, and a second firing state;

[0010] An unlocking assembly provided on the firing handle, and the unlocking assembly can move relative to the firing handle to achieve the switching between a locked state and an unlocked state;

[0011] A limiting member located on the movement path of the unlocking assembly moving along with the firing handle in the locked state, and the limiting member can lock the firing handle in the first firing state through the unlocking assembly;

[0012] When the unlocking assembly is in the locked state, the firing handle can switch between the initial state and the first firing state;

[0013] When the unlocking assembly is in the unlocked state, the firing handle can be unlocked relative to the limiting member, and the firing handle can switch from the first firing state to the second firing state.

[0014] Preferably, the unlocking assembly includes a main body and a blocking member. The first end of the blocking member is fixed to the main body, and the second end of the blocking member can rotate with the main body to contact or disengage from the limiting member, so as to correspondingly realize the locked state and the unlocked state of the unlocking assembly.

[0015] Preferably, the first end of the blocking member is arranged between the main body and the inner wall of the housing of the firing handle. When the main body rotates relative to the firing handle, the first end of the blocking member can be deformed to provide space for the movement of the second end of the blocking member.

[0016] Preferably, a receiving groove is provided on one side of the main body where the blocking member is fixed. The second end of the blocking member has a bent portion received in the receiving groove and a protruding portion extending away from the receiving groove relative to the bent portion. The protruding portion can move into the firing handle to disengage from the limiting member or move out of the firing handle to contact the limiting member.

[0017] Preferably, a blocking groove is provided at the edge of the firing handle close to the limiting member. There is a clearance distance between the outer edge of the blocking groove and the limiting member, and the distance of the part of the protruding portion protruding from the blocking groove is greater than the clearance distance.

[0018] Preferably, one end of the main body is rotatably connected to the firing handle, and an unlocking button is fixed to the other end of the main body. The pushing of the unlocking button can realize the rotation of the main body relative to the firing handle;

[0019] When the firing handle is switched from the initial state to the first firing state, the unlocking button is switched from being shielded by the housing to being exposed from the housing.

[0020] Preferably, the housing is provided with a shielding groove, and the opening size of the shielding groove gradually increases along the direction from the bottom to the opening of the shielding groove.

[0021] Preferably, the unlocking assembly includes a sliding column. The housing and the firing handle are respectively provided with a first sliding groove and a second sliding groove. When the unlocking assembly is in the locked state, the sliding column slides along the first sliding groove. When the unlocking assembly is switched from the locked state to the unlocked state, the sliding column can disengage from the first sliding groove and slide along the second sliding groove.

[0022] Preferably, it further includes a clamp rod and an elastic member sleeved on the clamp rod. The first firing state and the second firing state of the firing handle can compress the elastic member to obtain an elastic force, and the elastic member can be used for the sliding column to slide along the second sliding groove and contact the first sliding groove until it is reset.

[0023] Preferably, the first slideway includes a fitting portion and a separating portion that is bent relative to the fitting portion. The fitting portion is arranged close to the limiting member, and the separating portion is arranged away from the limiting member. When the firing handle can be switched from the initial state to the first firing state, the sliding column changes from the state of sliding while fitting to the fitting portion to the state of separating from the separating portion.

[0024] The continuous clip applicator provided by the present invention includes a housing, a firing handle, an unlocking assembly, and a limiting member. The firing handle is rotatably connected to the housing so as to be able to switch between an initial state, a first firing state, and a second firing state by rotation; the unlocking assembly can move with the firing handle or can move relative to the firing handle, and the unlocking assembly has an unlocking state and a locking state; wherein, when the unlocking assembly is in the locking state, the firing handle can drive the unlocking assembly to move to realize the switching of the firing handle between the initial state and the first firing state; when the firing handle is in the first firing state, the unlocking assembly can move relative to the firing handle to realize the switching from the locking state to the unlocking state. When the unlocking assembly is in the unlocking state, the firing handle can be unlocked from the limiting member, so that the firing handle can be changed from the first firing state to the second firing state by an external force.

[0025] When the unlocking assembly is in the locking state, the limiting member can lock the firing handle in the first firing state; when the unlocking assembly moves relative to the firing handle to switch to the unlocking state, the locking of the limiting member on the firing handle can be released. At this time, by applying an external force to the firing handle, the firing handle can be switched from the first firing state to the second firing state. Therefore, the setting of the unlocking assembly can avoid misoperation in the first firing state and ensure the treatment effect. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0027] Figure 1 It is a schematic structural diagram of the continuous clip applicator provided by the present invention;

[0028] Figure 2 It is a schematic diagram of the firing handle in the initial state provided by the present invention;

[0029] Figure 3 It is a schematic diagram of the firing handle in the first firing state provided by the present invention;

[0030] Figure 4 For Figure 3Schematic diagram of the internal structure of the back side;

[0031] Figure 5 Schematic diagram of the structure of the unlocking component provided by the present invention;

[0032] Figure 6 Side view of the firing handle provided by the present invention in the first firing state;

[0033] Figure 7 Internal schematic diagram of the firing handle provided by the present invention in the first firing state;

[0034] Figure 8 Schematic diagram of the positional relationship between the firing handle provided by the present invention in the first firing state and the sliding column;

[0035] Figure 9 Schematic diagram of the internal structure of the housing provided by the present invention;

[0036] Figure 10 Schematic diagram of the unlocking component provided by the present invention in the unlocked state.

[0037] Figures 1 - 10 In, the reference numerals include:

[0038] 1 - clamping head; 2 - clamping rod; 3 - housing; 4 - unlocking component; 5 - firing handle; 6 - push column; 7 - elastic member; 31 - limiting member; 32 - first slideway; 33 - shielding groove; 41 - unlocking button; 42 - sliding column; 43 - blocking member; 44 - accommodating groove; 45 - rotary shaft hole; 46 - main body; 51 - second slideway; 52 - firing column; 53 - blocking groove; 321 - fitting portion; 322 - separating portion; 431 - bending portion; 432 - protruding portion. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0040] The core of the present invention is to provide a continuous clip applicator, which can prevent the accidental firing of the closed clip caused by misoperation through the setting of the unlocking component and the limiting member, making it more conducive to clinical operation and ensuring the safety and effectiveness during the surgical process.

[0041] The continuous clip applicator provided by the present invention includes a housing 3, a firing handle 5 rotatably connected to the housing 3, an unlocking component 4 provided on the firing handle 5, and a limiting member 31. Please refer specifically to Figure 1 ,Figure 2 。

[0042] The firing handle 5 is rotatably connected to the housing 3 so that it can be rotated relative to the housing 3 by applying an external force to the firing handle 5, thereby enabling switching among the initial state, the first firing state, and the second firing state.

[0043] It should be noted that the initial state is the state when the continuous clip applicator does not need to operate; the first firing state corresponds to the state where the closing clip moves to the clamping head 1; and the second firing state corresponds to the state where the clamping rod 2 is pushed to close the closing clip in the clamping head 1. The specific processes and principles of the closing clip moving to the clamping head 1 and the closing clip in the clamping head 1 being closed are the same as those in the related art and will not be elaborated here.

[0044] Specifically, by the engagement of the firing post 52 on the firing handle 5 with the cylindrical surface of the push post 6, when the firing handle 5 is rotated to the first firing state under the action of an external force, the firing post 52 can push the push post 6 to move, thereby driving the closing clip to move to the clamping head 1; thereafter, when the firing handle 5 is rotated to the second firing state under the action of an external force, the firing post 52 can push the push post 6 to move further, and through the push post 6, the closing clip in the clamping head 1 is closed.

[0045] Under the action of an external force, the firing handle 5 essentially means that the operator can press the firing handle 5 to rotate the firing handle 5 relative to the housing 3.

[0046] The unlocking assembly 4 is provided on the firing handle 5, and the unlocking assembly 4 has a locked state and an unlocked state. Among them, when the unlocking assembly 4 is in the locked state, it is in a state of being able to move together with the firing handle 5. Specifically, when the firing handle 5 is pressed, the unlocking assembly 4 can move along with the firing handle 5. In this state, the firing handle 5 can achieve switching between the initial state and the first firing state.

[0047] The limiting member 31 is located on the movement path of the unlocking assembly 4 moving along with the firing handle 5 when the unlocking assembly 4 is in the locked state. Specifically, it means that the limiting member 31 is located on the movement path of the unlocking assembly 4 moving along with the firing handle 5. The limiting member 31 is specifically used to limit the next firing of the firing handle 5. The specific structure can be in the form of a blocking plate, a blocking block, etc., as long as it can play a blocking role. Specifically, when the unlocking assembly 4 moves along with the firing handle 5, when the firing handle 5 moves to the first firing state, the limiting member 31 can lock the firing handle 5 in the first firing state by blocking the unlocking assembly 4 to avoid misoperation.

[0048] When the firing handle 5 is in the first firing state, if a second firing is required, the unlocking component 4 needs to move relative to the firing handle 5. Specifically, the unlocking component 4 can move to release its contact with the limiting member 31, so that the limiting member 31 no longer has a locking effect. In this case, the firing handle 5 can be unlocked relative to the limiting member 31, that is, the firing handle 5 can be pressed at this time to switch from the first firing state to the second firing state.

[0049] Among them, the movement of the unlocking component 4 relative to the firing handle 5 specifically means that the firing handle 5 is locked and immovable in the first firing state, but the unlocking component 4 can move relative to the firing handle 5 so that the unlocking component 4 can get rid of the limitation of the limiting member 31. At this time, the limiting member 31 will not interfere with the firing handle 5 either, and the firing handle 5 can be pressed to fire, so as to realize the switch from the first firing state to the second firing state.

[0050] In this embodiment, the initial state - the first firing state - the second firing state are described in the order of the states during actual treatment use. Next, the order after the end of treatment formed by the second firing state - the first firing state - the initial state will be described.

[0051] In the second firing state, the operator keeps pressing the firing handle 5. When it is necessary to switch to the first firing state, the firing handle 5 is released. The unlocking component 4 will first switch from the unlocked state to the locked state. The firing handle 5 moves in the opposite direction to the direction during treatment use. Therefore, in the first firing state, the limiting member 31 will not limit the unlocking component 4. Then, when the handle is released again, the firing handle 5 gradually returns to the initial state.

[0052] In this embodiment, the locking of the firing handle 5 in the first firing state is achieved through the setting of the limiting member 31. Only when the unlocking component 4 can be switched from the locked state to the unlocked state can the firing handle 5 be pressed again to achieve the second firing. Through this form, misoperation can be reliably avoided, the precise operation during treatment can be ensured, and the treatment effect can be guaranteed.

[0053] On the basis of the above embodiment, please refer to Figure 5 , the unlocking component 4 includes a main body 46 and a blocking member 43. The first end of the blocking member 43 is fixed to the main body 46, and the second end of the blocking member 43 can rotate with the main body 46 to contact or disengage from the limiting member 31, so as to correspondingly realize the locked state and the unlocked state of the unlocking component 4.

[0054] In a specific embodiment, the main body 46 is located within the firing handle 5. The first end of the blocking member 43 is fixed to the main body 46 and is located within the firing handle 5. When the main body 46 rotates, the second end of the blocking member 43 can extend out of the firing handle 5 or retract into the firing handle 5. In the state of extending out of the firing handle 5, the second end of the blocking member 43 can be locked by contacting the limiting member 31, that is, the locking of the firing handle 5 in the first firing state is achieved; in the state of retracting into the firing handle 5, that is, the first end of the blocking member 43 is disengaged from the limiting member 31 to achieve unlocking, and correspondingly, the firing handle 5 can rotate to achieve the switching from the first firing state to the second firing state.

[0055] In this embodiment, by the contact and separation of the blocking member 43 and the limiting member 31, the switching between the locked state and the unlocked state of the unlocking assembly 4 is achieved, so as to be able to control according to different firing states and avoid the treatment risks brought by misoperations.

[0056] In this embodiment, the second end of the blocking member 43 can be limited by the limiting member 31, specifically by contact limitation. In order to ensure the service life of the limiting member 31 and the blocking member 43, a protective layer can be provided on the contact surface between the two, which can avoid the wear of the components during multiple firings.

[0057] Based on any of the above embodiments, please refer to Figure 5 、 Figure 6 、 Figure 7 , the first end of the blocking member 43 is arranged between the main body 46 and the inner wall of the housing of the firing handle 5. When the main body 46 rotates relative to the firing handle 5, the first end of the blocking member 43 can be deformed to provide space for the movement of the second end of the blocking member 43.

[0058] In this embodiment, the first end of the blocking member 43 can be deformed, that is, the blocking member 43 is an elastic body, and when the main body 46 rotates relative to the firing handle 5, the first end can be squeezed, so that the second end can rotate reliably.

[0059] In this embodiment, the state of the rotation of the main body 46 relative to the firing handle 5 corresponds to that the firing handle 5 needs to be switched from the first firing state to the second firing state, and correspondingly, the unlocking assembly 4 needs to be switched to the unlocked state.

[0060] In this embodiment, by setting the blocking member 43 as an elastic body, when the main body 46 rotates, the second end of the blocking member 43 can rotate more reliably to change from the form of contacting the limiting member 31 to disengaging from the limiting member 31, so that the firing handle 5 can be fired again. This form of elastic body can also avoid the noise caused by hard contact to a certain extent and improve the user experience.

[0061] Based on any of the above embodiments, please refer to Figure 5A receiving groove 44 is provided on one side of the main body 46 that fixes the blocking member 43. The second end of the blocking member 43 has a bent portion 431 accommodated in the receiving groove 44 and a protrusion 432 extending away from the receiving groove 44 relative to the bent portion 431. The protrusion 432 can be moved into the firing handle 5 to disengage from the limiting member 31 or moved out of the firing handle 5 to contact the limiting member 31.

[0062] The second end of the blocking member 43 is accommodated in the accommodating groove 44, but is not fixed to the accommodating groove 44. It can provide conditions for the blocking member 43 to move to contact or move away from the limiting member 31, and can reliably retract the second end of the blocking member 43 into the firing handle 5 when the main body 46 rotates relative to the firing handle 5, so that the firing handle 5 can perform the firing operation again.

[0063] The second end of the specific blocking member 43 includes a bent portion 431 and a protruding portion 432. The bent portion 431 is arranged to fit in the accommodating groove 44, and the protruding portion 432 extends relative to the bent portion 431 in a direction away from the accommodating groove 44. When the end of the protruding portion 432 away from the bent portion 431 extends out of the firing handle 5, it can contact the limiting member 31 to achieve the locking of the firing handle 5 in the first firing state; and when the side of the protruding portion 432 away from the bent portion 431 is retracted into the firing handle 5, the corresponding unlocking component 4 switches from the locked state to the unlocked state. At this time, the firing handle 5 can be in a fireable state and can be fired to the second firing state.

[0064] In this embodiment, if Figure 5 As shown, a guide surface is provided on the groove surface of the accommodating groove 44 close to the side of the protrusion 432. When the protrusion 432 moves into the firing handle 5, the guide surface can provide a certain guiding effect during rotation, thereby ensuring the reliability and effectiveness of the state switching of the blocking member 43.

[0065] Based on any of the above embodiments, please refer to Figure 6 、 Figure 7 A blocking groove 53 is provided on the edge of the firing handle 5 close to the limiter 31. There is an avoidance distance between the outer edge of the blocking groove 53 and the limiter 31. The distance between the protrusion 432 of the blocking member 43 protruding from the blocking groove 53 is greater than the avoidance distance.

[0066] The blocking groove 53 is a groove structure opened on the firing handle 5 to facilitate the protrusion 432 to extend or retract into the firing handle 5. The size of the blocking groove 53 is set in combination with the size of the protrusion 432 and can be set slightly larger to ensure that the protrusion 432 can move in and out smoothly and reliably.

[0067] There is a clearance distance between the outer edge of the blocking groove 53 and the limiting member 31, specifically to avoid interference between the firing handle 5 and the limiting member 31 when the firing handle 5 rotates, and to avoid generating noise. Specifically, it is the clearance when the firing handle 5 switches between the first firing state and the second firing state.

[0068] The protruding portion 432 protrudes from the blocking groove 53 corresponding to the firing handle 5 being in the first firing state and the unlocking assembly 4 being in the locked state. In this form, the distance that the protruding portion of the limiting portion protruding from the blocking groove 53 is greater than the clearance distance to ensure that the protruding portion 432 can be reliably blocked by the limiting member 31, ensure the reliability of the firing handle 5 being locked in the first firing state, and avoid the situation that affects treatment caused by misoperation of the firing handle 5.

[0069] In this embodiment, the depth of the blocking groove 53 is less than the protruding height of the protruding portion 432. Such a setting can enable the blocking groove 53 to limit most of the protruding portion 432, avoid situations such as the protruding portion 432 falling off from the blocking groove 53, and ensure a reliable working effect. It should be noted that most of the protruding portion 432 here means that at least more than 1 / 2 of the protruding height needs to be located inside the firing handle 5, and only a small part extends out of the blocking groove 53 to contact the limiting member 31.

[0070] Based on any of the above embodiments, please refer to Figure 3 、 Figure 4 、 Figure 5 , one end of the main body 46 is rotatably connected to the firing handle 5, and an unlocking button 41 is fixed to the other end of the main body 46. The pushing of the unlocking button 41 can realize the rotation of the main body 46 relative to the firing handle 5;

[0071] When the firing handle 5 switches from the initial state to the first firing state, the unlocking button 41 changes from being shielded by the housing 3 to being exposed from the housing 3.

[0072] Specifically, one end of the main body 46 is rotatably connected to the rotating shaft of the firing handle 5 through the rotating shaft hole 45, so as to be able to rotate the main body 46 relative to the firing handle 5 by applying an external force. Specifically, the rotation of the main body 46 relative to the firing handle 5 is realized by pushing the unlocking button 41 relative to the surface of the firing handle 5.

[0073] There is no limitation on the way of fixing the unlocking button 41. It can be integrally formed, can be connected by fasteners, can be glued, etc.

[0074] The unlocking button 41 is arranged outside the firing handle 5, which can facilitate the operator to push the unlocking button 41 to drive the rotation of the main body 46 and the blocking member 43 when the firing state needs to be switched, which can facilitate operation and improve convenience and applicability.

[0075] Based on the setting that the unlocking button 41 is placed outside the firing handle 5, in order to further ensure the safety and reliability of the firing operation, the housing 3 can provide a certain shielding effect for the unlocking button 41. In the initial state, at least most of the unlocking button 41 will not be exposed outside the housing 3, so as to further prevent misoperation of the unlocking button 41, ensure the reliability of the applicator during use, and ensure the treatment effect.

[0076] In this embodiment, there are various ways for the housing 3 to shield the unlocking button 41, such as in the form of a protective shell, a protective groove, etc.

[0077] Based on any of the above embodiments, please refer to Figure 2 , the housing 3 is provided with a shielding groove 33, and along the direction from the bottom of the shielding groove 33 to the opening of the groove, the opening size of the shielding groove 33 gradually increases.

[0078] When the firing handle 5 is in the initial state, the unlocking button 41 is shielded within the shielding groove 33; when the firing handle 5 is switched from the initial state to the first firing state, the unlocking button 41 gradually emerges from the shielding groove 33, so as to facilitate unlocking the firing handle 5 by pushing the unlocking button 41, enabling the firing handle 5 to be fired a second time. Through this kind of setting, it can ensure against misoperation in the unfired state, ensure the reliability of the switching between the unlocked state and the locked state of the unlocking component 4, and ensure the reliability of the operation of the firing handle 5.

[0079] In this embodiment, by restricting the opening size of the shielding groove 33 to gradually increase from the bottom of the groove to the opening, on the one hand, it is necessary to provide space for the unlocking button 41 to rotate with the firing handle 5, and on the other hand, it can facilitate the unlocking button 41 to move out of the shielding groove 33, ensuring the reliable operation of the unlocking button 41.

[0080] Based on any of the above embodiments, please refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 , the unlocking component 4 includes a sliding column 42, and the housing 3 and the firing handle 5 are respectively provided with a first sliding track 32 and a second sliding track 51. When the unlocking component 4 is in the locked state, the sliding column 42 slides along the first sliding track 32. When the unlocking component 4 is switched from the locked state to the unlocked state, the sliding column 42 can disengage from the first sliding track 32 and slide along the second sliding track 51.

[0081] Taking the firing handle 5 as an example when it is switched from the initial state to the first firing state and then from the first firing state to the second firing state:

[0082] When the unlocking assembly 4 is in the locked state, pressing the firing handle 5 can cause the firing handle 5 to drive the unlocking assembly 4 to rotate relative to the housing 3. At this time, specifically, the sliding column 42 slides along the first slideway 32, and the firing handle 5 switches from the initial state to the first firing state. And under the action of the limiting member 31, the firing handle 5 is locked in the first firing state. After that, by rotating the unlocking assembly 4 relative to the main body 46, the unlocking assembly 4 switches from the locked state to the unlocked state. During this process, the sliding column 42 disengages from the contact with the first slideway 32, and the first slideway 32 no longer restricts it. The sliding column 42 slides along the second slideway 51 until the unlocking assembly 4 is completely unlocked. Among them, the two moving limit positions of the sliding column 42 relative to the second slideway 51 correspond to the locked state and the unlocked state of the unlocking assembly 4 respectively.

[0083] The first slideway 32 and the second slideway 51 are located on both sides of the main body 46. The two ends of the sliding column 42 protrude from the first slideway 32 and the second slideway 51 respectively, so as to ensure reliable contact between the sliding column 42 and the slideway and ensure the reliability of the switching of different states of the firing handle 5.

[0084] By arranging the first slideway 32 and the second slideway 51 on both sides of the main body 46, when the sliding column 42 slides in close contact with the first slideway 32, the sliding column 42 can be stationary relative to the second slideway 51 to avoid interference. Only after the unlocking button 41 of the unlocking assembly 4 is pressed can the sliding column 42 move relative to the second slideway 51.

[0085] Based on any of the above embodiments, please refer to Figure 1 、 Figure 2 , it further includes a pliers rod 2 and an elastic member 7 sleeved on the pliers rod 2. The first firing state and the second firing state of the firing handle 5 can compress the elastic member 7 to obtain elastic force, and the elastic member 7 can be used for the sliding column 42 to slide along the second slideway 51 and contact the first slideway 32 until it returns to the original position.

[0086] After the closing clip is closed, release the pressing on the firing handle 5. Under the action of the elastic force of the elastic member 7, the firing handle 5 will return to the initial state. During this process, the sliding column 42 will change from the state of disengaging from the first slideway 32 to the state of fitting on the first slideway 32, so as to be able to push the sliding column 42 to move upward along the second slideway 51, and make the unlocking assembly 4 automatically return to the initial position without manual intervention, improving the convenience of use.

[0087] Based on any of the above embodiments, please refer to Figure 9, the first slideway 32 includes a fitting portion 321 and a disengaging portion 322 that is bent relative to the fitting portion 321. The fitting portion 321 is disposed close to the limiting member 31, and the disengaging portion 322 is disposed away from the limiting member 31. When the firing handle 5 can be switched from the initial state to the first firing state, the sliding column 42 changes from the state of sliding while fitting to the fitting portion 321 to the state of disengaging from the disengaging portion 322.

[0088] The fitting portion 321 is disposed close to the limiting member 31, and the disengaging portion 322 is disposed away from the limiting member 31. Here, "close" and "away" specifically refer to comparing the heights of the two. For example, Figure 9 the fitting portion 321 is disposed higher than the disengaging portion 322.

[0089] The fitting portion 321 is used to contact the sliding column 42 to provide guidance when the firing handle 5 rotates, while the disengaging portion 322 is used for the sliding column 42 to switch from the state of fitting to the fitting portion 321 to the state of being away from the disengaging portion 322 and contacting the second slideway 51. Specifically, the disengaging portion 322 and the fitting portion 321 can form an arc-shaped structure, and this arc-shaped structure is adapted to the firing action of the firing handle 5.

[0090] Next, the usage process of the continuous clip applicator provided by all the above embodiments will be introduced in detail:

[0091] For example, Figure 1 is the initial state. As Figure 2 shown, by holding the outer shell 3 with the hand and pressing the firing handle 5, the firing column 52 of the firing handle 5 pushes the push column 6 to move against the elastic force of the elastic member 7, and then drives the closing clip to move to the forceps head 1. During this process, the sliding column 42 slides along the fitting portion 321 until the protruding portion 432 of the blocking member 43 can contact the limiting member 31 for limiting. At this time, the firing handle 5 cannot be fired again. The closing clip moves to the forceps head 1, and the unlocking button 41 moves out of the shielding groove 33, and the sliding column 42 slides from the fitting portion 321 to the disengaging portion 322;

[0092] For example, Figure 10 , after that, press the unlocking button 41 to rotate the unlocking assembly 4 relative to the firing handle 5, and the protruding portion 432 disengages from the contact with the limiting member 31. The sliding column 42 slides down along the second slideway 51, and the protruding portion 432 of the blocking member 43 will move obliquely backward to the position flush with the blocking groove 53. At this time, the firing handle 5 can be fired again. Figure 10 In this state, by pressing the firing handle 5 again, the push column 6 can be pushed by the firing column 52 to continue to move against the elastic force of the elastic member 7. The push column 6 pushes the forceps rod 2 to close the closing clip in the forceps head 1.

[0093] After the closing clip is closed, release the firing handle 5, and the entire applicator will reset to the initial state without manual intervention.

[0094] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0095] The above has introduced in detail a kind of continuous firing clip applicator provided by the present invention. Specific examples are used herein to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A continuous firing clip applicator, characterized in that, Comprising: A housing (3); A firing handle (5) rotatably connected to the housing (3), the firing handle (5) being able to rotate to switch between an initial state, a first firing state, and a second firing state; An unlocking assembly (4) provided on the firing handle (5), the unlocking assembly (4) being able to move relative to the firing handle (5) to switch between a locked state and an unlocked state; A limiting member (31) located on the movement path of the unlocking assembly (4) when in the locked state and moving with the firing handle (5), the limiting member (31) being able to lock the firing handle (5) in the first firing state through the unlocking assembly (4); When the unlocking assembly (4) is in the locked state, the firing handle (5) can switch between the initial state and the first firing state; When the unlocking assembly (4) is in the unlocked state, the firing handle (5) can be unlocked relative to the limiting member (31), and the firing handle (5) can be switched from the first firing state to the second firing state.

2. The continuous clip applicator according to claim 1, characterized in that, The unlocking assembly (4) includes a main body (46) and a blocking member (43), a first end of the blocking member (43) being fixed to the main body (46), and a second end of the blocking member (43) being able to rotate with the main body (46) to contact the limiting member (31) or disengage from the limiting member (31) to correspondingly achieve the locked state and the unlocked state of the unlocking assembly (4).

3. The continuous clip applicator according to claim 2, characterized in that, The first end of the blocking member (43) is arranged between the main body (46) and the inner wall of the housing (3) of the firing handle (5), and the first end of the blocking member (43) can be deformed when the main body (46) rotates relative to the firing handle (5) to provide space for the second end of the blocking member (43) to move.

4. The sequential clip applicator according to claim 3, wherein, On the side of the main body (46) where the blocking member (43) is fixed, there is a receiving groove (44), the second end of the blocking member (43) has a bent portion (431) received in the receiving groove (44) and a protruding portion (432) extending away from the receiving groove (44) relative to the bent portion (431), and the protruding portion (432) can move into the firing handle (5) to disengage from the limiting member (31) or move out of the firing handle (5) to contact the limiting member (31).

5. The sequential clip applicator according to claim 4, wherein A blocking groove (53) is provided at the edge of the firing handle (5) close to the limiting member (31), and there is a clearance distance between the outer edge of the blocking groove (53) and the limiting member (31), and the distance of the part of the protruding portion (432) protruding from the blocking groove (53) is greater than the clearance distance.

6. The sequential clip applicator according to any one of claims 2 to 5, characterized in that One end of the main body (46) is rotatably connected to the firing handle (5), and an unlocking button (41) is fixed to the other end of the main body (46), and the pushing of the unlocking button (41) can achieve the rotation of the main body (46) relative to the firing handle (5); When the firing handle (5) is switched from the initial state to the first firing state, the unlocking button (41) is changed from being shielded by the housing (3) to being exposed from the housing (3).

7. The sequential clip applicator according to claim 6, wherein The housing (3) is provided with a shielding groove (33), and the opening size of the shielding groove (33) gradually increases along the direction from the bottom to the opening of the shielding groove (33).

8. The continuous clip applicator according to claim 7, wherein The unlocking assembly (4) includes a sliding column (42). The housing (3) and the firing handle (5) are respectively provided with a first sliding groove (32) and a second sliding groove (51). When the unlocking assembly (4) is in the locked state, the sliding column (42) slides along the first sliding groove (32). When the unlocking assembly (4) is switched from the locked state to the unlocked state, the sliding column (42) can disengage from the first sliding groove (32) and slide along the second sliding groove (51).

9. The sequential clip applicator according to claim 8, wherein, It further includes a pliers rod (2) and an elastic member (7) sleeved on the pliers rod (2). The first firing state and the second firing state of the firing handle (5) can compress the elastic member (7) to obtain an elastic force, and the elastic member (7) can be used for the sliding column (42) to slide along the second sliding groove (51) and contact the first sliding groove (32) until it is reset.

10. The sequential clip applicator according to claim 9, wherein, The first sliding groove (32) includes a fitting portion (321) and a disengaging portion (322) bent relative to the fitting portion (321). The fitting portion (321) is arranged close to the limiting member (31), and the disengaging portion (322) is arranged away from the limiting member (31). When the firing handle (5) can be switched from the initial state to the first firing state, the sliding column (42) changes from the state of sliding while fitting on the fitting portion (321) to the state of disengaging from the disengaging portion (322).

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