Anti-falling hemostatic forceps

Abstract

The utility model discloses a pair of anti-falling hemostatic forceps, which belongs to the technical field of medical instruments and comprises a first forceps handle and a second forceps handle, the first forceps handle is provided with a first lock catch plate, the second forceps handle is provided with a second lock catch plate, the first lock catch plate is provided with lock teeth, and the second lock catch plate is rotatably connected with a turntable; the lock pin is connected to the second lock catch plate in an inserted mode, the axis direction of the lock pin is parallel to the thickness direction of the second lock catch plate, and the lock pin can slide relative to the second lock catch plate in the axis direction of the lock pin; the locking mechanism further comprises a linkage structure, and the linkage structure is used for achieving the effects that when the rotary disc rotates, the linkage structure drives the lock pin to slide relative to the second lock catch plate, and the lock pin can slide to be meshed with the lock teeth and can slide to be disengaged from the lock teeth. The haemostatic forceps are favorable for keeping the form of the haemostatic forceps; the occlusion mode provided by the scheme also has the characteristic of convenience in operation.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a hemostatic forceps that can prevent falling. Background Art

[0002] Hemostatic forceps is a surgical instrument used to block blood flow and prevent blood from flowing out. It is also an essential instrument in obstetrics and gynecology surgery, such as used in cesarean sections.

[0003] Hemostatic forceps come in a variety of models and structures. When used, the appropriate size and structure of the hemostatic forceps are selected based on the location of the tissue being treated and the target being treated. However, the use of hemostatic forceps to block blood flow and prevent blood from flowing out is basically the same: the jaws (clamps) at the front end of the hemostatic forceps clamp the blocking position. At the same time, in order to maintain the state of the jaws clamping the tissue within a certain period of time and prevent the jaws from loosening and becoming ineffective in hemostasis, the prior art has hemostatic forceps with a locking plate at the finger ring end of the hemostatic forceps handle and locking teeth on the locking plate. When such hemostatic forceps are used, when the finger ring end of the handle is brought together, the two locking plates overlap, and the locking teeth on the two locking plates engage with each other, so that the locking teeth prevent the handle from opening, thereby maintaining the clamping state of the jaws.

[0004] Regarding the locking plate and locking teeth described above, the prior art includes the solution provided in Patent Publication (Announcement) No.: CN219557448U. In operation, since the stacked locking plates squeeze each other during the process of locking teeth engagement and the dislocation of the locking teeth, in order to release the engagement, it is necessary to provide a lateral force to cause the locking plates to move backwards from each other. The above lateral force can be directly applied to the locking plates to cause the base of the locking plates to elastically deform. The above lateral force can also be applied to the clamp handle to cause the locking plates to elastically deform with the clamp handle to achieve the above backward movement. At the same time, as the number of times the hemostatic force is used increases, the locking plates and the clamp handle will produce permanent deformation, which will cause the stacked state of the locking plates to change, affecting the reliability of maintaining the clamping state of the jaws. For this reason, it is necessary to optimize the structure of the hemostatic forceps. Utility Model Content

[0005] The present invention aims to optimize the hemostatic forceps and provides a hemostatic forceps that can be prevented from falling. The hemostatic forceps does not involve the lateral force required for the engagement and release of the locking plate during use. From the perspective of the force applied to the hemostatic forceps, it is beneficial to maintaining the shape of the hemostatic forceps. In addition, the locking plate engagement method provided by the present invention is also easy to operate.

[0006] The specific technical solution is: a hemostatic forceps that prevents falling, comprising a first handle and a second handle hingedly connected by a first rivet, a rear end of the first handle being provided with a first locking plate, and a rear end of the second handle being provided with a second locking plate. When the rear end of the first handle and the rear end of the second handle are in a closed state, the first locking plate and the second locking plate are stacked in a thickness direction of the hemostatic forceps, the first locking plate being provided with a locking tooth, and the second locking plate being rotatably connected to a rotary disk, wherein the rotary disk can be rotated around its own axis, and the inner end face of the rotary disk is in contact with the outer surface of the second locking plate; it also includes a locking pin inserted into the second locking plate, the axial direction of the locking pin being parallel to the thickness direction of the second locking plate, and the locking pin can slide relative to the second locking plate along its own axial direction; it also includes a linkage structure, which is used to achieve: when the rotary disk rotates, the linkage structure drives the locking pin to slide relative to the second locking plate, and the locking pin can slide to engage with the locking tooth and can slide to disengage from the locking tooth.

[0007] The hemostatic forceps provided by the present invention are characterized in that the front end of the first handle and the handle of the second handle form a jaw. When the user operates the first handle and the rear end of the second handle, when the rear end of the first handle and the rear end of the second handle are closed with each other, the front end of the first handle and the front end of the second handle rotate accordingly, so that the jaw is closed. When the rear end of the first handle and the rear end of the second handle are opened with each other, the front end of the first handle and the front end of the second handle rotate accordingly, so that the jaw is opened. The closed state is a state in which the rear end of the first handle and the rear end of the second handle are relatively close to each other. In this state, the jaws clamp tissue at the hemostatic position, and the stacking relationship of the first locking plate and the second locking plate is utilized to enable the locking pin to be inserted into the locking teeth to form an occlusive relationship with the locking teeth. Under this occlusive relationship, the relative position of the first locking plate and the second locking plate is maintained by shearing of the locking pin, so as to keep the state in which the jaws of the hemostatic forceps clamp tissue. At the same time, this occlusive relationship can also be released by the locking pin sliding away from the locking teeth and then disengaging from the locking teeth.

[0008] In the prior art, locking teeth are usually provided on the side of the first locking plate close to the second locking plate and on the side of the second locking plate close to the first locking plate. These locking teeth engage with each other during the overlapping process of the first locking plate and the second locking plate, thereby achieving the purpose of maintaining the jaw state. Since achieving and removing the engaged state involve deformation of the corresponding locking plates and / or elastic deformation of the pliers handle, during repeated use, when such elastic deformation is converted into plastic deformation of the locking plates and / or the pliers handle, it will lead to the problem that the engaged state cannot be obtained and the maintenance of the engaged state is unreliable.

[0009] This solution differs from the prior art in that it utilizes a rotating disk and a corresponding linkage structure. When the rotating disk rotates, the linkage mechanism drives the locking pin to slide in the thickness direction of the second locking plate, thereby achieving the aforementioned engaged state and contacting the aforementioned engaged state. Specifically, this solution replaces the locking teeth of the locking plate on one of the pliers handles in the prior art with a structure comprising a rotating disk, a linkage structure, and a locking pin.

[0010] In terms of technical effects, this solution is superior to existing technologies:

[0011] 1. After the first locking plate and the second locking plate are stacked, the locking pin is embedded in the locking teeth and engaged with the locking teeth, and the locking pin slides out of the locking teeth depending on the position to which the locking pin slides along its own axis. Therefore, the engagement and release of the first locking plate and the second locking plate do not depend on the elastic deformation of the first locking plate and the second locking plate. From the angle of force applied to the first locking plate, the second locking plate, the first clamp handle, and the second clamp handle, this solution can better maintain the shape of each component on the hemostat, and can effectively avoid the problem of inability to engage and unreliable engagement caused by failure of these components. Therefore, this solution provides a solution that can effectively prevent the hemostat from falling off the clamped tissue;

[0012] 2. From the operational perspective of this solution, since the position of the locking pin on its own axis is controlled by the rotation of the turntable, compared with pushing and pulling the hemostatic forceps or providing lateral force to the hemostatic forceps to complete the locking and unlocking of the jaws, rotating the turntable to achieve corresponding engagement and disengagement has little effect on the position stability of the hemostatic forceps. This can effectively reduce the difficulty of surgical operations and ensure surgical safety. Therefore, this solution provides a technical solution that is easy to operate.

[0013] In a specific embodiment, the linkage structure includes an annular groove provided on the inner end surface, the axis of the annular groove is collinear with the axis of the turntable, the annular groove is a dovetail groove having an inner ring and an outer ring, and the width of the inner ring is greater than the width of the outer ring;

[0014] The linkage structure further includes an enlarged portion provided as the end of the locking pin, wherein the enlarged portion is embedded in the inner ring of the annular groove;

[0015] The inner ring is inclined relative to the inner end face: in the circumferential direction of the annular groove, the distance between each circumferential position of the inner ring of the annular groove and the inner end face changes linearly. When the turntable rotates, the end face of the inner ring drives the locking pin to slide relative to the second locking plate through the enlarged part.

[0016] The above scheme provides a specific lock pin driving form: the plug-in connection relationship between the lock pin and the second lock strike plate enables the second lock strike plate to limit the position of the lock pin on the second lock strike plate. When the turntable rotates, the position of the enlarged portion in the annular groove changes. Since the enlarged portion is confined in the inner ring and the inner ring is inclined relative to the inner end face, the rotating turntable can provide thrust and pulling force for the lock pin. For example, when the outer end face of the inner ring drives the enlarged portion to move toward the side away from the second lock strike plate, the latch is disengaged from the lock teeth. When the inner end face of the inner ring drives the enlarged portion to move toward the side close to the second lock strike plate, the latch is embedded in the lock teeth to achieve engagement.

[0017] In a specific embodiment, the linkage structure includes a first groove and a second groove provided on the inner end surface, the first groove and the second groove are both spherical grooves with spherical groove surfaces, the depth of the second groove is greater than the depth of the first groove, the first groove and the second groove are located on the same circular ring, the center of the circular ring is located on the axis of the turntable; the second lock plate is provided with a mounting hole, the mounting hole is a stepped hole provided with a stepped surface, the lock pin is inserted into the second lock plate through the mounting hole, one end of the lock pin is a tip for engaging with the lock tooth, and the other end of the lock pin is provided with a ball head, the linkage structure also includes a compression spring clamped between the step surface and the ball head, the compression spring is used to provide the lock pin with a thrust toward the turntable;

[0018] The position of the locking pin on the second locking plate satisfies that: as the turntable rotates around its own axis, both the first groove and the second groove can rotate to be in a positive relationship with the ball head;

[0019] When the ball head is facing the first groove, the ball head can be embedded in the first groove and contact the bottom of the first groove under the thrust of the compression spring. When the ball head contacts the bottom of the first groove, the tip is embedded in the lock tooth.

[0020] When the ball head is facing the second groove, the ball head can be embedded in the second groove and contact the groove bottom of the second groove. When the ball head contacts the groove bottom of the second groove, the tip is released from the locking tooth.

[0021] The above scheme provides a specific lock pin driving form: the plug-in connection relationship between the lock pin and the second lock strike plate enables the second lock strike plate to limit the position of the lock pin on the second lock strike plate, and the compression spring always provides the lock pin with a thrust toward the ball head, so that the lock pin always remains in a state of being against the turntable. When the turntable rotates to face the second groove, the ball head is embedded in the second groove, and the latch slides slightly toward the side where the turntable is located, and the tip is disengaged from the lock tooth. At this time, the first lock strike plate and the second lock strike plate form a mutually unconstrained state. When the turntable rotates to face the first groove, the ball head is embedded in the first groove. Since the first groove is shallower than the second groove, the latch slides slightly toward the side where the turntable is located, and the tip is embedded in the lock tooth. At this time, the first lock strike plate and the second lock strike plate form a mutually constrained state.

[0022] It is easy to understand that, from the perspective of the locking pin driving purpose, this solution is equivalent to the above solution of setting an annular groove, but this solution has the following characteristics: when the ball head is embedded in the first groove or the second groove under the action of the compression spring, the user can judge the matching state of the locking pin and the first groove and the second groove based on the impact of the ball head on the turntable and the resistance of the turntable to further rotation, so this solution is beneficial to the convenience of use of the hemostatic forceps; at the same time, when the ball head is embedded in the first groove and the second groove, the further rotation of the turntable requires the compression spring to be further compressed, so under non-human conditions, the turntable is not easy to rotate after the ball head is embedded in the first groove and the second groove, so this solution is beneficial to maintaining the state of the locking pin and the lock tooth.

[0023] The above compression spring can be a coil spring or a leaf spring. When it is a coil spring, it is implemented as a coil spring sleeve on the locking pin. For example, when the end of the locking pin with a ball head is the upper end, the upper end of the coil spring is against the lower end of the ball head, and the lower end of the coil spring is against the step surface; when it is a leaf spring, the leaf spring is in contact with the top of the ball head and forms an arch structure on the surface where the second lock plate and the turntable are in contact. The first groove and the second groove both have the ability to accommodate the arch structure. When the arch structure is facing the first groove, the leaf spring pushes the ball head to connect with the bottom of the first groove. At this time, the tip of the lock pin is embedded in the lock tooth but does not contact the bottom of the lock tooth. When the arch structure is facing the second groove, the leaf spring pushes the ball head to connect with the bottom of the second groove. At this time, the tip of the lock pin is pushed out of the lock tooth.

[0024] Regardless of whether a coil spring or a leaf spring is used, when the arch structure or the ball head contacts the position between the first groove and the second groove on the inner end face of the turntable, the locking pin is embedded in the lock tooth. However, at this position, since there are no first grooves and second grooves to hinder the rotation of the turntable, this position is not stable, and the user needs to further rotate the turntable to utilize the first groove and the second groove to produce a locking effect on the turntable.

[0025] In a specific embodiment: In order to alleviate the deformation of the ball head, the first groove and the second groove, the ball head, the first groove and the second groove are set to have the same radius, so that the ball head can completely fill the first groove and the second groove, reducing the local force on the surfaces of each when colliding with each other.

[0026] In a specific embodiment: the number of the first grooves and the second grooves are both two, wherein the two first grooves are symmetrical with respect to the axis of the turntable, the two second grooves are symmetrical with respect to the axis of the turntable, and the line connecting the two first grooves is perpendicular to the line connecting the two second grooves.

[0027] The above scheme provides a specific lock pin drive form: the above scheme provides a setting form of a first groove and a second groove. It is easy to understand that this scheme uses the first groove and the second groove to divide the corresponding circular ring into four equal parts, that is, the user rotates the turntable 90° to achieve the engagement and non-engagement state switching of the lock pin and the lock tooth. The user does not need to consider the rotation direction when rotating the turntable, which greatly improves the convenience of use of this scheme.

[0028] In a specific embodiment: the turntable is riveted to the second locking plate through a rotating shaft, wherein the structure formed by the rotating shaft and the turntable is an integral structure, and the turntable is coaxial with the rotating shaft; the rotating shaft passes through the second locking plate through the riveted hole on the second locking plate, the back of the turntable is fitted with the front of the second locking plate, the free end of the rotating shaft extends to the outside of the back of the second locking plate, and the rotating shaft has a deformation portion on the back of the second locking plate for achieving riveting; it also includes a ring-shaped pad, which is sleeved on the rotating shaft, one end of the pad is in contact with the back of the second locking plate, and the other end of the pad is in contact with the deformed portion.

[0029] The above scheme provides a specific riveting form of the turntable: specifically, the end of the rotating shaft away from the turntable is used as the deformation part during riveting, and the pad is used as the intermediate structure between the deformation part and the back of the second locking plate. In this way, when riveting the turntable, the pad has a restrictive relationship with the part on the rotating shaft that is deformed to form the deformation part, thereby preventing the rotating shaft in the riveting hole from being affected by the rotation of the turntable due to being roughened.

[0030] In a specific embodiment, the back side of the turntable, the side surface of the rotating shaft and the end of the backing plate that is in contact with the back side of the second locking plate are all provided with a wear-resistant layer.

[0031] The above solution provides a solution that can ensure the installation accuracy of the turntable for a long time: the wear-resistant layer can be a plating layer or a heat-treated layer, the purpose of which is to reduce the wear rate of the relevant wear surface during the use of the hemostatic forceps, so as to achieve the purpose of long-term protection of the matching accuracy between the turntable and the second locking plate.

[0032] In a specific embodiment: it also includes a spring sheet, one end of which is fixedly connected to the first clamp handle, and the other end of the spring sheet is fixedly connected to the second clamp handle. When the rear end of the first clamp handle and the rear end of the second clamp handle are closed, the spring sheet produces compressive elastic deformation.

[0033] The above solution provides a method for the jaws to open automatically after the bite is released: during the process of closing the rear ends of the first and second handles, the spring sheet generates compressed elasticity and stores energy. When the rear ends of the first and second handles are free from constraints, the spring sheet provides the force to open the jaws. On the other hand, the above solution provides a method for using the thrust of the spring sheet to cause the first and second locking plates to have a tendency to stagger relative to each other in the bite state. Under this tendency, the side surfaces of the lock pin and the side surfaces of the lock teeth can generate a lateral force. The mutual compression relationship between the lock pin and the second lock plate caused by this lateral force is beneficial to maintaining the stability of the lock pin, and is particularly suitable for the above solution of providing an annular groove on the turntable.

[0034] In a specific embodiment, the rear ends of the first pliers handle and the rear ends of the second pliers handle are both provided with finger rings for passing fingers through, and the first locking plate and the second locking plate are both provided near the finger rings.

[0035] The above solution provides a solution for using a finger ring to operate the rear ends of the first and second handles to open and close, and provides a solution for facilitating the operation of the turntable by setting the first locking plate and the second locking plate at the rear ends of the hemostatic forceps.

[0036] In a specific embodiment: one end of the first locking plate is fixedly connected to the first clamp handle, and the other end is located on a side of the first clamp handle close to the second clamp handle; one end of the second locking plate is fixedly connected to the second clamp handle, and the other end is located on a side of the second clamp handle close to the first clamp handle;

[0037] The first locking plate and the second locking plate are both arc-shaped plates with their centers located on the axis of the first rivet;

[0038] There are multiple locking teeth on the first locking plate, and the locking teeth are arranged along the length direction of the first locking plate;

[0039] The locking pin is arranged on the free end of the second locking plate.

[0040] The above solution provides a specific shape of the first locking plate, the connection between the first locking plate and the first clamp handle, the shape of the second locking plate, the connection between the second locking plate and the second clamp handle, and the arrangement of the locking teeth. Specifically, as the first clamp handle and the second clamp handle rotate relative to each other, after the first locking plate and the second locking plate are intertwined, the first locking plate and the second locking plate can always maintain a stacked relationship to adapt to each other under further rotation. The multiple locking teeth are adapted to the engagement needs of the first clamp handle and the second clamp handle at different angles. At the same time, compared with the solution of achieving engagement by magnetic attraction, in this solution, the turntable is operated after the jaws complete clamping, so that the locking pin and the locking teeth engage, and there is no problem of the force of the jaws clamping tissue changing under the action of the magnetic force.

[0041] In a specific embodiment, the side of the turntable is provided with anti-slip grooves.

[0042] The above solution provides a technical solution that can smoothly rotate the turntable.

[0043] The utility model has the following beneficial effects:

[0044] 1. This solution can better maintain the shape of the various parts on the hemostat, and can effectively avoid the problem of inability to engage and unreliable engagement caused by failure of these parts. Therefore, this solution provides a solution that can effectively prevent the hemostat from falling off the clamped tissue;

[0045] 2. This solution can effectively reduce the difficulty of surgical operation and ensure the safety of surgery, so this solution provides a technical solution that is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a schematic structural diagram of a specific embodiment of the anti-drop hemostatic forceps described in this solution;

[0047] Figure 2 is a schematic diagram for illustrating the mating state of the first locking plate and the second locking plate, and the schematic diagram shows the state in which the locking pin is disengaged from the locking teeth;

[0048] Figure 3 is a schematic diagram for illustrating the mating state of the first locking plate and the second locking plate, and the schematic diagram illustrates the engagement state of the locking pin and the locking teeth;

[0049] Figure 4 A bottom view of a specific turntable;

[0050] Figure 5 This is a schematic diagram for illustrating the cooperation between the turntable and the lock pin. The schematic diagram shows that the lock pin is driven to slide through the annular groove, and the lock pin is in a state of being disengaged from the lock teeth.

[0051] The reference numerals in the accompanying drawings are: 1. first rivet, 2. first clamp handle, 3. second clamp handle, 4. spring sheet, 5. finger ring, 6. first locking plate, 7. turntable, 8. second locking plate, 9. locking pin, 10. ball head, 11. compression spring, 12. mounting hole, 13. locking tooth, 14. pad, 15. first groove, 16. second groove, 17. annular groove, 18. expanded part. DETAILED DESCRIPTION

[0052] The present invention will be further described in detail below with reference to the following embodiments, but the present invention is not limited to the following embodiments:

[0053] Example 1:

[0054] like Figures 1 to 5 The present invention shows a hemostatic forceps that can be prevented from falling, comprising a first handle 2 and a second handle 3 hingedly connected by a first rivet 1, a first locking plate 6 being provided at the rear end of the first handle 2, and a second locking plate 8 being provided at the rear end of the second handle 3. When the rear ends of the first handle 2 and the second handle 3 are in a closed state, the first locking plate 6 and the second locking plate 8 are in a stacked relationship in the thickness direction of the hemostatic forceps, a locking tooth 13 being provided on the first locking plate 6, and a turntable 7 being rotatably connected to the second locking plate 8. The turntable 7 can be rotated to It rotates around its own axis, and the inner end surface of the turntable 7 is in contact with the outer surface of the second locking plate 8; it also includes a locking pin 9 inserted into the second locking plate 8, and the axial direction of the locking pin 9 is parallel to the thickness direction of the second locking plate 8, and the locking pin 9 can slide relative to the second locking plate 8 along its own axial direction; it also includes a linkage structure, and the linkage structure is used to achieve: when the turntable 7 rotates, the linkage structure drives the locking pin 9 to slide relative to the second locking plate 8, and the locking pin 9 can slide to engage with the locking teeth 13 and can slide to disengage from the locking teeth 13.

[0055] In the hemostatic forceps provided in this solution, the front end of the first handle 2 and the handle of the second handle 3 form a jaw, and the user operates the first handle 2 and the rear end of the second handle 3. When the rear end of the first handle 2 and the rear end of the second handle 3 are closed to each other, the front end of the first handle 2 and the front end of the second handle 3 rotate accordingly, so that the jaw is closed. When the rear end of the first handle 2 and the rear end of the second handle 3 are opened to each other, the front end of the first handle 2 and the front end of the second handle 3 rotate accordingly, so that the jaw is opened. The closed state is the first handle The rear end of the handle 2 is relatively close to the rear end of the second handle 3. In this state, the jaws clamp the tissue at the hemostatic position, and the stacking relationship of the first locking plate 6 and the second locking plate 8 is utilized to enable the locking pin 9 to be inserted into the locking tooth 13 to form an occlusal relationship with the locking tooth 13. Under this occlusal relationship, the relative position of the first locking plate 6 and the second locking plate 8 is maintained by shearing the locking pin 9 to keep the jaws of the hemostatic forceps clamping the tissue. At the same time, the occlusal relationship can also be released by the locking pin 9 sliding away from the locking tooth 13 and then falling out of the locking tooth 13.

[0056] In the prior art, locking teeth 13 are usually provided on the side of the first locking plate 6 close to the second locking plate 8 and on the side of the second locking plate 8 close to the first locking plate 6. These locking teeth 13 engage with each other during the overlapping process of the first locking plate 6 and the second locking plate 8, so as to achieve the purpose of maintaining the jaw state. Since achieving the engaged state and removing the engaged state involve the deformation of the corresponding locking plate and / or the elastic deformation of the pliers handle, during repeated use, when such elastic deformation is converted into plastic deformation of the locking plate and / or the pliers handle, it will lead to the problem that the engaged state cannot be obtained and the maintenance of the engaged state is unreliable.

[0057] This solution differs from the prior art in that it utilizes a rotating disk 7 and a corresponding linkage structure. When the rotating disk 7 rotates, the linkage mechanism drives the locking pin 9 to slide in the thickness direction of the second locking plate 8, thereby achieving the aforementioned engaged state and the mating relationship of contacting the engaged state. Specifically, this solution replaces the locking teeth 13 of the locking plate on one of the pliers handles in the prior art with a structure comprising the rotating disk 7, the linkage structure, and the locking pin 9.

[0058] In terms of technical effects, this solution is superior to existing technologies:

[0059] 1. After the first locking plate 6 and the second locking plate 8 are stacked, since the locking pin 9 is embedded in the locking teeth 13 and engages with the locking teeth 13, and the sliding of the locking pin 9 from the locking teeth 13 depends on the position to which the locking pin 9 slides along its own axis, the engagement and release of the first locking plate 6 and the second locking plate 8 do not depend on the elastic deformation of the first locking plate 6 and the second locking plate 8. From the force angles of the first locking plate 6, the second locking plate 8, the first clamp handle 2 and the second clamp handle 3, this solution can better maintain the shape of each component on the hemostat, and can effectively avoid the problem of failure to engage and unreliable engagement caused by failure of these components. Therefore, this solution provides a solution that can effectively prevent the hemostat from falling off the clamped tissue;

[0060] 2. From the operational perspective of this solution, since the position of the locking pin 9 on its own axis is controlled by the rotation of the turntable 7, compared with pushing and pulling the hemostatic forceps or providing lateral force to the hemostatic forceps to complete the locking and unlocking of the jaws, rotating the turntable 7 to achieve corresponding engagement and disengagement has little effect on the position stability of the hemostatic forceps, which can effectively reduce the difficulty of surgical operation and ensure the safety of surgery. Therefore, this solution provides a technical solution that is easy to operate.

[0061] In more detail: the linkage structure includes an annular groove 17 provided on the inner end surface, the axis of the annular groove 17 is collinear with the axis of the turntable 7, the annular groove 17 is a dovetail groove having an inner ring and an outer ring, and the width of the inner ring is greater than the width of the outer ring;

[0062] The linkage structure further includes an enlarged portion 18 provided as the end of the locking pin 9, and the enlarged portion 18 is embedded in the inner ring of the annular groove 17;

[0063] The inner ring is inclined relative to the inner end face: in the circumferential direction of the annular groove 17, the distance between each circumferential position of the inner ring of the annular groove 17 and the inner end face changes linearly. When the turntable 7 rotates, the end face of the inner ring drives the locking pin 9 to slide relative to the second locking plate 8 through the enlarged portion 18.

[0064] The above scheme provides a specific driving form of the lock pin 9: the plug-in relationship between the lock pin 9 and the second lock strike plate 8 enables the second lock strike plate 8 to limit the position of the lock pin 9 on the second lock strike plate 8. When the turntable 7 rotates, the position of the enlarged portion 18 in the annular groove 17 changes. Since the enlarged portion 18 is confined in the inner ring and the inner ring is inclined relative to the inner end face, the rotating turntable 7 can provide thrust and tension for the lock pin 9. For example, when the outer end face of the inner ring drives the enlarged portion 18 to move toward the side away from the second lock strike plate 8, the latch is disengaged from the lock tooth 13. When the inner end face of the inner ring drives the enlarged portion 18 to move toward the side close to the second lock strike plate 8, the latch is embedded in the lock tooth 13 to achieve engagement.

[0065] More specifically: the linkage structure includes a first groove 15 and a second groove 16 provided on the inner end surface, the first groove 15 and the second groove 16 are spherical grooves with a spherical groove surface, the depth of the second groove 16 is greater than the depth of the first groove 15, the first groove 15 and the second groove 16 are located on the same circular ring, the center of the circular ring is located on the axis of the turntable 7; the second lock plate 8 is provided with a mounting hole 12, the mounting hole 12 is a stepped hole with a stepped surface, the lock pin is inserted into the second lock plate 8 through the mounting hole 12, one end of the lock pin 9 is a tip for engaging with the lock tooth 13, and the other end of the lock pin 9 is provided with a ball head 10, the linkage structure also includes a compression spring 11 clamped between the step surface and the ball head 10, the compression spring 11 is used to provide a thrust for the lock pin 9 toward the turntable 7;

[0066] The position of the locking pin 9 on the second locking plate 8 satisfies that: as the turntable 7 rotates around its own axis, the first groove 15 and the second groove 16 can rotate to be in a positive relationship with the ball head 10;

[0067] When the ball head 10 is facing the first groove 15, the ball head 10 can be embedded in the first groove 15 and contact the bottom of the first groove 15 under the thrust of the compression spring 11. When the ball head 10 contacts the bottom of the first groove 15, the tip is embedded in the lock tooth 13.

[0068] When the ball head 10 is facing the second groove 16 , the ball head 10 can be embedded in the second groove 16 and contact the bottom of the second groove 16 . When the ball head 10 contacts the bottom of the second groove 16 , the tip is released from the locking tooth 13 .

[0069] The above scheme provides a specific driving form of the lock pin 9: the plug-in relationship between the lock pin 9 and the second lock striker plate 8 makes the second lock striker plate 8 have the function of limiting the position of the lock pin 9 on the second lock striker plate 8, and the compression spring 11 always provides the lock pin 9 with a thrust toward the ball head 10, so that the lock pin 9 always remains in a state of abutting against the turntable 7. When the turntable 7 rotates to face the second groove 16, the ball head 10 is embedded in the second groove 16, and the latch slides slightly toward the side where the turntable 7 is located, and the tip is disengaged from the lock tooth 13. At this time, the first lock striker plate 6 and the second lock striker plate 8 form a mutually unconstrained state. When the turntable 7 rotates to face the first groove 15, the ball head 10 is embedded in the first groove 15. Since the first groove 15 is shallower than the second groove 16, the latch slides slightly toward the side where the turntable 7 is located, and the tip is embedded in the lock tooth 13. At this time, the first lock striker plate 6 and the second lock striker plate 8 form a mutually constrained state.

[0070] It is easy to understand that, from the perspective of the driving purpose of the locking pin 9, this solution is equivalent to the above-mentioned solution of setting the annular groove 17, but this solution has the following characteristics: when the ball head 10 is embedded in the first groove 15 or the second groove 16 under the action of the compression spring 11, the user can judge the matching state of the locking pin 9 and the first groove 15 and the second groove 16 based on the impact of the ball head 10 on the turntable 7 and the resistance of the turntable 7 to further rotation, so this solution is beneficial to the convenience of use of the hemostatic forceps; at the same time, when the ball head 10 is embedded in the first groove 15 and the second groove 16, the further rotation of the turntable 7 requires the compression spring 11 to be further compressed, so under non-human conditions, the turntable 7 is not easy to rotate after the ball head 10 is embedded in the first groove 15 and the second groove 16, so this solution is beneficial to maintaining the state of the locking pin 9 and the lock tooth 13.

[0071] The above compression spring 11 can be a coil spring or a leaf spring. When it is a coil spring, it is implemented as a coil spring sleeve on the lock pin 9. For example, when the lock pin 9 has one end of the ball head 10 as the upper end, the upper end of the coil spring is against the lower end of the ball head 10, and the lower end of the coil spring is against the step surface; when it is a leaf spring, the leaf spring is in contact with the top of the ball head 10 and forms an arch structure on the surface where the second lock plate 8 is in contact with the turntable 7. The first groove 15 and the second groove 16 both have the ability to accommodate the arch structure. When the arch structure is opposite to the first groove 15, the leaf spring pushes the ball head 10 to connect with the bottom of the first groove 15. At this time, the tip of the lock pin 9 is embedded in the lock tooth 13 but does not contact the bottom of the lock tooth 13. When the arch structure is opposite to the second groove 16, the leaf spring pushes the ball head 10 to connect with the bottom of the second groove 16. At this time, the tip of the lock pin 9 is pushed out of the lock tooth 13.

[0072] Regardless of whether a coil spring or a leaf spring is used, when the arch structure or the ball head 10 contacts the position between the first groove 15 and the second groove 16 on the inner end surface of the turntable 7, the locking pin 9 is embedded in the lock tooth 13. However, at this position, since there is no first groove 15 or second groove 16 to hinder the rotation of the turntable 7, this position is not stable, and the user needs to further rotate the turntable 7 to utilize the first groove 15 and the second groove 16 to produce a locking effect on the turntable 7.

[0073] In more detail: In order to alleviate the deformation of the ball head 10, the first groove 15, and the second groove 16, the ball head 10, the first groove 15, and the second groove 16 are set to have the same radius, so that the ball head 10 can completely fill the first groove 15 and the second groove 16, reducing the local force on the surfaces of each when colliding with each other.

[0074] In more detail: the number of the first grooves 15 and the second grooves 16 are both two, wherein the two first grooves 15 are symmetrical with respect to the axis of the turntable 7, the two second grooves 16 are symmetrical with respect to the axis of the turntable 7, and the line connecting the two first grooves 15 is perpendicular to the line connecting the two second grooves 16.

[0075] The above scheme provides a specific driving form of the lock pin 9: the above scheme provides a setting form of a first groove 15 and a second groove 16. It is easy to understand that this scheme uses the first groove 15 and the second groove 16 to divide the corresponding circular ring into four equal parts, that is, the user rotates the turntable 790° to achieve the switching of the locking pin 9 and the lock tooth 13 between the biting and non-biting states. The user does not need to consider the rotation direction when rotating the turntable 7, which greatly improves the convenience of use of this scheme.

[0076] In more detail: the turntable 7 is riveted to the second locking plate 8 through a rotating shaft, wherein the structure formed by the rotating shaft and the turntable 7 is an integral structure, and the turntable 7 is coaxial with the rotating shaft; the rotating shaft passes through the second locking plate 8 through the riveted hole on the second locking plate 8, and the back of the turntable 7 is in contact with the front of the second locking plate 8. The free end of the rotating shaft extends to the outside of the back of the second locking plate 8, and the rotating shaft has a deformation portion on the back of the second locking plate 8 for achieving riveting; it also includes a ring-shaped pad 14, which is sleeved on the rotating shaft, one end of the pad 14 is in contact with the back of the second locking plate 8, and the other end of the pad 14 is in contact with the deformed portion.

[0077] The above scheme provides a specific riveting form of the turntable 7: specifically, the end of the rotating shaft away from the turntable 7 is used as the deformation part during riveting, and the pad 14 is used as the intermediate structure between the deformation part and the back of the second locking plate 8. In this way, when the turntable 7 is riveted, the pad 14 has a restrictive relationship with the part on the rotating shaft that is deformed to form the deformation part, thereby preventing the rotating shaft in the riveting hole from being affected by the rotation of the turntable 7 due to being roughened.

[0078] In more detail, the back of the turntable 7, the side of the rotating shaft and the end of the pad 14 that is in contact with the back of the second locking plate 8 are all provided with a wear-resistant layer.

[0079] The above solution provides a solution that can ensure the installation accuracy of the turntable 7 for a long time: the wear-resistant layer can be a plating layer or a heat-treated layer, the purpose of which is to reduce the wear rate of the relevant wear surface during the use of the hemostatic forceps, so as to achieve the purpose of long-term protection of the matching accuracy of the turntable 7 and the second locking plate 8.

[0080] In more detail: it also includes a spring sheet 4, one end of which is fixedly connected to the first clamp handle 2, and the other end of the spring sheet 4 is fixedly connected to the second clamp handle 3. During the closing process of the rear end of the first clamp handle 2 and the rear end of the second clamp handle 3, the spring sheet 4 produces compressive elastic deformation.

[0081] The above solution provides a solution that allows the jaws to open automatically after the bite is released: during the process of closing the rear ends of the first handle 2 and the second handle 3, the spring sheet 4 generates compressed elasticity and stores energy. When the rear ends of the first handle 2 and the second handle 3 are not constrained, the spring sheet 4 provides a force to open the jaws. On the other hand, the above solution provides a method of using the thrust of the spring sheet 4 in the bite state to make the first lock plate 6 and the second lock plate 8 have a tendency to stagger with each other. Under this tendency, the side surface of the lock pin 9 and the side surface of the lock tooth 13 can generate a lateral force. The mutual squeezing relationship between the lock pin 9 and the second lock plate 8 caused by this lateral force is beneficial to maintaining the stability of the lock pin 9, and is particularly suitable for the above solution of providing an annular groove 17 on the turntable 7.

[0082] In more detail: the rear ends of the first pliers handle 2 and the rear ends of the second pliers handle 3 are both provided with finger rings 5 ​​for passing fingers through, and the first locking plate 6 and the second locking plate 8 are both provided near the finger rings 5.

[0083] The above scheme provides a scheme for using the finger ring 5 to operate the rear end of the first handle 2 and the rear end of the second handle 3 to open and close, and provides a scheme for facilitating the operation of the turntable 7 by setting the first locking plate 6 and the second locking plate 8 at the rear end of the hemostatic forceps.

[0084] More specifically: one end of the first locking plate 6 is fixedly connected to the first clamp handle 2, and the other end is located on the side of the first clamp handle 2 close to the second clamp handle 3; one end of the second locking plate 8 is fixedly connected to the second clamp handle 3, and the other end is located on the side of the second clamp handle 3 close to the first clamp handle 2;

[0085] The first locking plate 6 and the second locking plate 8 are both arc-shaped plates with their centers located on the axis of the first rivet 1;

[0086] There are multiple locking teeth 13 on the first locking plate 6, and the locking teeth 13 are arranged along the length direction of the first locking plate 6;

[0087] The locking pin 9 is arranged on the free end of the second locking plate 8 .

[0088] The above scheme provides a specific shape of the first locking plate 6, a connection form between the first locking plate 6 and the first clamp handle 2, a shape of the second locking plate 8, a connection form between the second locking plate 8 and the second clamp handle 3, and a setting form of the locking teeth 13. Specifically, as the first clamp handle 2 and the second clamp handle 3 rotate relative to each other, when the first locking plate 6 and the second locking plate 8 are intertwined, under further rotation, the first locking plate 6 and the second locking plate 8 can always maintain a stacked relationship to adapt to mutual engagement. The multiple locking teeth 13 are adapted to the engagement needs of the first clamp handle 2 and the second clamp handle 3 at different angles. At the same time, compared with the scheme of achieving engagement by magnetic attraction, in this scheme, after the jaws complete clamping, the turntable 7 is operated to engage the locking pin 9 with the locking teeth 13, and there is no problem of the force of the jaws clamping the tissue changing under the action of the magnetic force.

[0089] In more detail: the side of the turntable 7 is provided with anti-slip grooves.

[0090] The above solution provides a technical solution that can smoothly rotate the turntable 7.

[0091] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific embodiments of the present invention are not limited to these descriptions. For those skilled in the art of the present invention, other embodiments that do not depart from the technical solution of the present invention should be included in the scope of protection of the present invention.

Claims

1. A hemostatic forceps for preventing a hemostatic forceps from falling, comprising a first handle (2) and a second handle (3) hingedly connected by a first rivet (1), a first locking plate (6) being provided at the rear end of the first handle (2), and a second locking plate (8) being provided at the rear end of the second handle (3), wherein when the rear end of the first handle (2) and the rear end of the second handle (3) are in a closed state, the first locking plate (6) and the second locking plate (8) are in a stacked relationship in the thickness direction of the hemostatic forceps, characterized in that: The first locking plate (6) is provided with a locking tooth (13), and the second locking plate (8) is rotatably connected to a turntable (7), wherein the turntable (7) can rotate around its own axis, and the inner end surface of the turntable (7) is in contact with the outer surface of the second locking plate (8); the locking pin (9) is also included and inserted into the second locking plate (8), wherein the axial direction of the locking pin (9) is parallel to the thickness direction of the second locking plate (8), and the locking pin (9) can slide relative to the second locking plate (8) along its own axial direction; and the linkage structure is also included, wherein the linkage structure is used to realize: when the turntable (7) rotates, the linkage structure drives the locking pin (9) to slide relative to the second locking plate (8), and the locking pin (9) can slide to engage with the locking tooth (13) and can slide to disengage from the locking tooth (13).

2. The anti-drop hemostatic forceps according to claim 1, characterized in that: The linkage structure includes an annular groove (17) provided on the inner end surface, the axis of the annular groove (17) is collinear with the axis of the turntable (7), the annular groove (17) is a dovetail groove having an inner ring and an outer ring, the width of the inner ring being greater than the width of the outer ring; The linkage structure further comprises an enlarged portion (18) provided as the end of the locking pin (9), wherein the enlarged portion (18) is embedded in the inner ring of the annular groove (17); The inner ring is inclined relative to the inner end face: in the circumferential direction of the annular groove (17), the distance between each circumferential position of the inner ring of the annular groove (17) and the inner end face changes linearly. When the turntable (7) rotates, the end face of the inner ring drives the lock pin (9) to slide relative to the second lock plate (8) through the expanded portion (18).

3. The anti-drop hemostatic forceps according to claim 1, characterized in that: The linkage structure comprises a first groove (15) and a second groove (16) provided on the inner end surface, the first groove (15) and the second groove (16) are both spherical grooves with spherical groove surfaces, the depth of the second groove (16) is greater than the depth of the first groove (15), the first groove (15) and the second groove (16) are located on the same circular ring, the center of the circular ring is located on the axis of the turntable (7); the second locking plate (8) is provided with a mounting hole (12), The mounting hole (12) is a stepped hole provided with a stepped surface. The locking pin (9) is inserted into the second locking plate (8) through the mounting hole (12). One end of the locking pin (9) is a tip for engaging with the locking tooth (13). The other end of the locking pin (9) is provided with a ball head (10). The linkage structure further includes a compression spring (11) clamped between the stepped surface and the ball head (10). The compression spring (11) is used to provide a thrust for the locking pin (9) toward the turntable (7). The position of the locking pin (9) on the second locking plate (8) satisfies the following conditions: as the turntable (7) rotates around its own axis, the first groove (15) and the second groove (16) can both rotate to be in a positive relationship with the ball head (10); When the ball head (10) is facing the first groove (15), the ball head (10) can be embedded in the first groove (15) under the thrust of the compression spring (11) and contact the groove bottom of the first groove (15); when the ball head (10) contacts the groove bottom of the first groove (15), the tip is embedded in the lock tooth (13); When the ball head (10) is aligned with the second groove (16), the ball head (10) can be embedded in the second groove (16) and contact the groove bottom of the second groove (16); when the ball head (10) contacts the groove bottom of the second groove (16), the tip is released from the locking tooth (13).

4. The anti-drop hemostatic forceps according to claim 3, characterized in that: The number of the first grooves (15) and the number of the second grooves (16) are both two, wherein the two first grooves (15) are symmetrical with respect to the axis of the turntable (7), the two second grooves (16) are symmetrical with respect to the axis of the turntable (7), and the line connecting the two first grooves (15) is perpendicular to the line connecting the two second grooves (16).

5. The anti-drop hemostatic forceps according to claim 1, characterized in that: The rotating disk (7) is riveted to the second locking plate (8) through a rotating shaft, wherein the structure formed by the rotating shaft and the rotating disk (7) is an integral structure, and the rotating disk (7) is coaxial with the rotating shaft; the rotating shaft passes through the second locking plate (8) through a riveting hole on the second locking plate (8), the back of the rotating disk (7) is in contact with the front of the second locking plate (8), the free end of the rotating shaft extends to the outside of the back of the second locking plate (8), and the rotating shaft has a deformation portion on the back of the second locking plate (8) for achieving riveting; and also includes an annular pad (14), the pad (14) is sleeved on the rotating shaft, one end of the pad (14) is in contact with the back of the second locking plate (8), and the other end of the pad (14) is in contact with the deformation portion.

6. The anti-drop hemostatic forceps according to claim 5, characterized in that: The back surface of the rotating disk (7), the side surface of the rotating shaft and the end of the backing plate (14) for contacting with the back surface of the second locking plate (8) are all provided with a wear-resistant layer.

7. The anti-drop hemostatic forceps according to any one of claims 1 to 6, characterized in that: The invention also comprises a spring sheet (4), one end of which is fixedly connected to the first clamp handle (2), and the other end of which is fixedly connected to the second clamp handle (3). When the rear end of the first clamp handle (2) and the rear end of the second clamp handle (3) are closed, the spring sheet (4) generates a compressive elastic deformation.

8. The anti-drop hemostatic forceps according to any one of claims 1 to 6, characterized in that: The rear ends of the first clamp handle (2) and the second clamp handle (3) are both provided with finger rings (5) for passing fingers through, and the first locking plate (6) and the second locking plate (8) are both provided at positions close to the finger rings (5).

9. The anti-drop hemostatic forceps according to any one of claims 1 to 6, characterized in that: One end of the first locking plate (6) is fixedly connected to the first clamp handle (2), and the other end is located on a side of the first clamp handle (2) close to the second clamp handle (3); one end of the second locking plate (8) is fixedly connected to the second clamp handle (3), and the other end is located on a side of the second clamp handle (3) close to the first clamp handle (2); The first locking plate (6) and the second locking plate (8) are both arc-shaped plates with their centers located on the axis of the first rivet (1); There are a plurality of locking teeth (13) on the first locking plate (6), and the locking teeth (13) are arranged along the length direction of the first locking plate (6); The locking pin (9) is arranged on the free end of the second locking plate (8).

10. The hemostatic forceps for preventing from falling according to any one of claims 1 to 6, characterized in that: The side surface of the turntable (7) is provided with anti-slip grooves.

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