Field open clip applier

Abstract

The present application relates to the field of surgical equipment, and discloses a rotating front traction linkage type operating field opening clip applier, which comprises a middle part in the shape of a long strip, hollow and provided with a plug-in structure at one end, a chuck part plugged with the middle part through the plug-in structure, an operating part arranged at the other end of the middle part, and a traction structure arranged inside the middle part. The chuck part comprises two clamping pieces connected in rotation, and the operating part comprises two grips. The traction structure comprises a traction rod arranged in the middle part, one end of the traction rod extending to the chuck part and being able to translate along the length direction of the middle part and rotate around its own axis; the translation drives the clamping pieces to close or separate, and the rotation realizes the hanging or separation with the clamping pieces. The present application is buckled by the pin block and the clamping piece traction groove, so that the chuck part can be installed and positioned after simple rotation after straight insertion, the chuck part is simply and quickly replaced, the installation angle is limited, and the installation precision is ensured.

Description

Technical Field

[0001] This invention relates to the field of surgical instruments, specifically to a surgical field opening clamp applicator. Background Technology

[0002] In the field of surgery, clamps are important instruments used to ligate blood vessels, lymphatic vessels, and tissue bundles. Clamps usually adopt an integrated fixed clamp head structure, that is, the clamp head and the clamp body (including the operating part, connecting rod, and intermediate part) are permanently connected by welding, riveting, or integral machining. This design structure is simple and inexpensive, and is widely used in routine surgery.

[0003] In related technologies, to facilitate the replacement of the clamp head of the clamp before surgery, for example, the prior art patent with publication number CN217696701U provides a clamp with a replaceable clamp head. This clamp has a pull rod movably connected to the tail ends of two scissor bodies, and the tail ends of the two pull rods movably connected together by a rotating shaft. The rotating shaft has a pull rod 2, which is provided with a thread corresponding to the thread at the tail end of the traction structure. A hinge for hinged scissor bodies and the lower half of the scissor bodies are covered with a clamp head shell. The clamp head shell is fixedly connected to the hinge, and the tail end of the clamp head shell has a thread that mates with the thread at the tail end of the sleeve. Thus, the clamp head can be disassembled and assembled during replacement through the threaded engagement.

[0004] Although the existing technical solutions mentioned above can achieve the effect of driving the clamp head through the operating part after installation by setting a threaded structure to connect with the traction structure at the clamp head connection part, the threaded connection may cause a certain angle deviation between the clamp head and the operating part after connection due to inadequate tightening or poor thread precision, which affects the usage habits of medical staff and even affects the efficiency of open surgery. Furthermore, when threadedly connected, it is inconvenient to observe the alignment of the threaded end of the internal pull rod II with the traction structure, which makes the installation of the clamp head inconvenient and the replacement efficiency low. Summary of the Invention

[0005] To address one of the shortcomings of existing technologies, this invention provides a surgical field open clamp applicator, which solves the problems of poor installation accuracy and low efficiency when changing clamp heads.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a surgical field opening clamp applicator, comprising:

[0007] The middle part is a long, hollow structure with a plug-in structure at one end.

[0008] The clamping head is connected to the middle part via the plug-in structure, and the clamping head includes two rotatably connected clamping members.

[0009] The operating part is located at the end of the middle part away from the clamp head, and the operating part includes two handles;

[0010] A traction structure is disposed inside the middle section, and the handle of the operating part can drive the clamping head to perform clamping or releasing actions through the traction structure; the traction structure includes:

[0011] A traction rod is disposed within the middle section, with one end extending into the interior of the clamping head; the traction rod can translate along the length direction of the middle section, and the traction rod can rotate with its own axis as the rotation reference axis;

[0012] When the traction rod moves horizontally, it can cause the clamping member to close or separate; when the traction rod rotates, it can engage or disengage with the clamping member.

[0013] Preferably, the insertion structure of the middle part includes:

[0014] A slot is provided at one end of the middle portion facing the clamp head; the clamp head can be inserted into the slot;

[0015] A card slot is formed on the wall of the slot, and the card slot is a "U" shaped slot;

[0016] The clamp head also includes:

[0017] A connecting pin is used to rotatably connect the two clamping members; both ends of the connecting pin extend to the outside of the two clamping members.

[0018] A traction plate is fixedly installed at one end of the clamping member facing the middle portion;

[0019] A notch is formed on the side opposite to the traction plate;

[0020] After the clamp head is inserted into the middle part, the traction plate is inserted into the slot, and the connecting pin is engaged with the slot; one end of the traction rod extends into the recess.

[0021] Preferably, the clamping head further includes:

[0022] A traction groove is formed on one side of the traction plate where a notch is provided; the traction groove is an inclined groove; the traction grooves on the two traction plates are inclined in opposite directions.

[0023] The traction structure also includes:

[0024] A pin block is provided at one end of the traction rod facing the clamp head, and two pin blocks are symmetrically arranged; the pin block can be slidably connected with the traction groove.

[0025] Preferably, the clamping head further includes:

[0026] A transition groove is provided for each of the traction grooves. The transition groove is located at one end of the traction groove, and the bottom of the transition groove is an arc surface structure.

[0027] When the traction rod rotates, the pin block can enter or leave the traction groove through the transition groove.

[0028] Preferably, the intermediate portion further includes:

[0029] A guide is provided on the groove wall of the slot, and the guide protrudes toward the inside of the slot;

[0030] The clamp head also includes:

[0031] A guide groove is formed on the side of the traction plate and clamping member opposite to the recess; when the two clamping members are closed, the length direction of the guide groove is parallel to the axis of the traction rod.

[0032] The clearance groove is an arc-shaped groove with the axis of the connecting pin as its center line; one end of the clearance groove is connected to the guide groove.

[0033] The guide member can be slidably connected with the guide groove and the clearance groove.

[0034] Preferably, the operating unit further includes:

[0035] A linkage arm is provided for each of the grips, with one end of the linkage arm rotatably connected to the middle part and the other end fixedly connected to the grip.

[0036] A reset element is disposed between the two grips, and at least one reset element is provided. The reset element is a "V" shaped spring.

[0037] The clamp applicator also includes:

[0038] The linkage assembly connects the linkage arm to the traction rod.

[0039] Preferably, the linkage component includes:

[0040] A linkage housing is disposed on one side of the middle portion;

[0041] The gear is rotatably disposed inside the linkage housing;

[0042] A rack is provided on each side of the gear, and the two racks mesh with the gear respectively, and the two racks are arranged in a centrally symmetrical structure; the linkage arm is linked with the rack and can drive the rack to translate.

[0043] A linkage sleeve is coaxially and fixedly connected to the gear; the linkage sleeve is hollow inside and has external threads on its outer wall.

[0044] The traction structure also includes:

[0045] A sleeve is fitted onto the outside of the traction rod and is rotatably connected to the traction rod; the sleeve and the middle part are slidably connected, and the sliding direction is parallel to the axis of the traction rod; the sleeve is threadedly connected to the linkage sleeve.

[0046] Preferably, the linkage arm has a linkage groove, which is a long groove;

[0047] The linkage component also includes:

[0048] A connecting block is fixedly installed at the end of each rack, and the connecting block is located at the ends of the two racks that are far apart from each other; a through pin hole is opened on the connecting block;

[0049] The linkage pin can be inserted into the connecting block, and the linkage pin is slidably connected to the linkage groove.

[0050] Preferably, the linkage component further includes:

[0051] A connecting rod, with each end of its body fixedly connected to a linkage pin, and the connecting rod is made of an elastic material;

[0052] A magnetic strip is disposed inside the linkage housing and is located on one side of the moving path of the rack; the rack is made of a material that can be magnetically attracted.

[0053] A pad is disposed on the side of the magnetic strip facing the rack; the side of the rack is in contact with the pad.

[0054] Preferably, the traction structure further includes:

[0055] A pull rod is fixedly installed at the end of the traction rod away from the clamp head, and the pull rod and the traction rod are coaxial;

[0056] The knob is fixedly located at the end of the pull rod away from the clamp head.

[0057] Preferably, the end of the pull rod with the knob extends to the side of the linkage housing facing the handle; the traction structure further includes:

[0058] A spring pin is located on the side of the knob facing the linkage housing;

[0059] The linkage component also includes:

[0060] The adjustment groove is an arc-shaped groove formed on the linkage housing, and the spring pin is slidably connected to the adjustment groove;

[0061] An inclined surface is provided at one end of the adjustment groove.

[0062] Preferably, it also includes:

[0063] The pressure plate is a long strip-shaped plate that is slidably connected to the middle part, with the sliding direction being the axial direction of the traction rod; the pressure plate can slide towards the outside of the clamp head.

[0064] Preferably, it also includes:

[0065] An illumination element is provided on one side of the clamp head; the illumination element is a light-emitting component.

[0066] A closing limiting component is disposed between the two grips, which can limit the minimum distance between the grips when they approach each other.

[0067] Compared with the existing technology, this solution has the following advantages: By setting a pin block at one end of the traction structure and engaging the traction groove between it and the clamping part, the clamp head can be installed and positioned by a simple rotation after being directly inserted into the middle part. This achieves the effect of easy and quick replacement of the clamp head. Furthermore, the installation angle is limited by the rotation angle of the pin block, ensuring the installation accuracy of the clamp head relative to the middle part and the operating part.

[0068] The applicator in this design is equipped with an illumination element, which can provide better illumination of the surgical field.

[0069] The clamp applicator in this design features a movable pressure plate that can be used to separate tissues affecting the surgical field, making it easier to clamp the desired location.

[0070] The clamp applicator in this solution is also equipped with a closing limit component, which limits the range of movement of the handle during operation to avoid excessive force that could cause tissue damage at the clamping site. Attached Figure Description

[0071] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application. Figure 1 ;

[0072] Figure 2 This is a schematic diagram of the overall explosion structure of an embodiment of this application;

[0073] Figure 3 This is a schematic diagram of the exploded structure of the clamp head in an embodiment of this application;

[0074] Figure 4 This is a schematic diagram of the structure of the clamping component according to an embodiment of this application;

[0075] Figure 5 This is a schematic diagram of the structure of the intermediate part in an embodiment of this application;

[0076] Figure 6 This is a schematic diagram of the mating structure between the traction structure and the clamping head in an embodiment of this application;

[0077] Figure 7This is a schematic diagram of the structure of the operating part in an embodiment of this application;

[0078] Figure 8 This is a schematic diagram of the structure of the linkage component in an embodiment of this application;

[0079] Figure 9 This is a schematic diagram of the overall structure of an embodiment of this application. Figure 2 ;

[0080] Figure 10 This is a schematic diagram of the overall structure of an embodiment of this application. Figure 3 ;

[0081] In the picture:

[0082] 1. Middle section; 11. Slot; 12. Card slot; 13. Guide component; 14. Limiting plate; 15. Limiting groove; 16. Slide rail;

[0083] 2. Clamping head; 21. Clamping component; 22. Connecting pin; 23. Traction plate; 24. Notch; 25. Traction groove; 26. Transition groove; 27. Guide groove; 28. Relief groove;

[0084] 3. Operating unit; 31. Linkage arm; 32. Handle; 33. Reset component; 34. Linkage groove;

[0085] 4. Traction structure; 41. Traction rod; 411. Pin block; 42. Sleeve; 43. Slide bar; 44. Pull rod; 45. Knob; 46. Spring pin;

[0086] 5. Linkage assembly; 51. Linkage sleeve; 52. Gear; 53. Rack; 54. Through groove; 55. Connecting block; 56. Linkage pin; 57. Connecting rod; 58. Slide groove; 59. Magnetic strip; 510. Gasket; 511. Through hole; 512. Adjusting groove; 513. Inclined surface;

[0087] 6. Lighting components;

[0088] 7. Pressure plate; 71. Push block;

[0089] 8. Closure limiting component; 81. First closure limiting component; 82. Second closure limiting component; 83. Unlocking component. Detailed Implementation

[0090] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0091] Please see Figures 1-6 This application provides the following technical solutions:

[0092] The surgical field open clamp applicator includes a central section 1, a clamp head 2, an operating section 3, and a traction structure 4. The central section 1 serves as the intermediate structure of the clamp applicator and is an elongated, hollow structure. One end of the central section 1 has a connector corresponding to the clamp head 2. The clamp head 2 connects to the central section 1 via the connector, allowing for easy and quick assembly and disassembly. The operating section 3 is located at the other end of the central section 1, and the traction structure 4 is located inside the central section 1. The operating section 3 includes two mirror-symmetrically arranged handles 32. The traction structure 4 serves as a linkage between the operating section 3 and the clamp head 2. The handles 32 of the operating section 3 drive the clamp head 2 to perform corresponding clamping or releasing actions via the traction structure 4.

[0093] For ease of explanation, the opening and closing direction of the handle 32 of the operating part 3 during the operation of the clamp is defined as direction one; the length direction of the middle part 11 is defined as direction two, which is also the direction of the line connecting the operating part 3 to the clamp head 2; and direction three is defined as perpendicular to direction one and not parallel to direction two. Directions one, two, and three form an approximate xyz three-axis system. When the clamp is laid flat, directions one and two can be approximated as horizontal, and direction three is vertical.

[0094] The insertion structure of the middle part 11 includes a slot 11 and a slot 12 opened at its end. The end of the slot 11 facing the clamp head 2 is open, and the two sides of the slot 11 in the corresponding direction are also open. The slot 12 is opened on the side of the slot wall of the slot 11 facing the clamp head 2. That is, there are two slots 12, which are located on the two slot walls of the slot 11 respectively. The slot 12 is a "U" shaped slot, and its open end faces the clamp head 2.

[0095] The clamp head 2 includes two clamping members 21, which serve as structures for applying clamping force. Each clamping member 21 has a through hole at one end, with a connecting pin 22 at each through hole. The connecting pin 22 enables the rotational connection of the two clamping members 21. Both ends of the connecting pin 22 extend to the outer sides of the two clamping members 21. A traction plate 23 is fixedly mounted on the end of each clamping member 21 facing the middle part 1. Each traction plate 23 corresponding to one of the two clamping members 21 has a notch 24 on its opposite side. The combination of the two notches 24 forms a cavity for linkage with the traction structure 4. A traction groove 25 is formed on the traction plate 23, which is an inclined groove on the opposite side of the two traction plates 23. The traction grooves 25 on the two traction plates 23 have opposite inclination directions. In the clamping configuration of this solution, both ends of the connecting pin 22 are embedded in the slot 12 of the middle part 1; the two traction plates 23 are located inside the slot 11.

[0096] The traction structure 4 includes a traction rod 41 disposed inside the intermediate part 1. The traction rod 41 can slide and rotate within the intermediate part 1. The length direction of the traction rod 41, that is, the axial direction of the traction rod 41, is parallel to direction two. The sliding direction of the traction rod 41 is direction two, and the rotation direction is based on the axis of the traction rod 41 itself. One end of the traction rod 41 extends between the two traction plates 23, and pin blocks 411 are symmetrically arranged on both sides of this end of the traction structure 4. The two pin blocks 411 are slidably connected to the traction grooves 25 on the two traction plates 23, respectively. Through the linkage between the handle 32 and the traction rod 41, the pin blocks 411 are driven to move between the two traction plates 23.

[0097] When the clamping clamp is in use, that is, when the clamping member 21 needs to be controlled to open and close for clamping, the axes of the two pins 411 are parallel to direction three, and the two pins 411 are located inside their respective traction grooves 25. By sliding the pins 411 along the traction grooves 25, the opening and closing states of the two clamping members 21 can be controlled. When the two clamping members 21 of the clamping head 2 are closed, the two traction grooves 25 present an approximately ">" shape; as the pins 411 move, when the clamping members 21 are in a half-open state, the two traction grooves 25 present an approximately "X" shape; when the clamping members 21 are fully open, the two traction grooves 25 present an approximately "<" shape.

[0098] When it is necessary to replace the clamp head 2, rotate the traction rod 41 by 90°. At this time, the axial direction of the pin block 411 is parallel to the first direction. The traction rod 41 disengages from the traction groove 25, and the clamp head 2 can move in the second direction and separate from the middle part 1.

[0099] The traction rod 4 remains in the same position, meaning the pin 411 is parallel to the axis and direction one. Take the replacement clamp head 2 and insert it into the slot 11, allowing the pin 411 to enter the recess 24 between the traction plates 23. The connecting pin 22 engages in the slot 12. When the clamp head 2 can no longer be inserted, rotate the traction rod 41, causing the pin 41 to rotate 90°, turning it from direction one to direction three between the traction plates 23, allowing the pin 411 to enter the traction groove 25. Then, the operating unit 3 drives the traction structure 4, causing the traction rod 41 to move along direction two, thus driving the two clamping parts 21 to trigger the clamping and releasing action, allowing normal use of the clamping pliers.

[0100] The structure of this design makes it easier to assemble and disassemble the clamping head 2 and the middle part 1. Furthermore, the installation angle is limited by the rotation angle of the pin block 411, ensuring the installation accuracy of the clamping head 2 relative to the middle part 1 and the operating part 3, as well as its stability and reliability during use.

[0101] Based on the above implementation plan, see Figures 3 to 5Guide members 13 are respectively provided on the two groove walls of the slot 11. The guide members 13 are structures that protrude towards the inside of the slot 11. In this design, ball bearings are used as the guiding mechanism for the guide members 13.

[0102] The outer surfaces of the clamping member 21 and the traction plate 23 are provided with guide grooves 27 corresponding to the guide member 13. When the two clamping members 12 are closed, the length direction of the guide groove 27 is parallel to the second direction, that is, parallel to the axial direction of the traction rod 41. A relief groove 28 is provided at the end of the guide groove 27 away from the middle part 1. The relief groove 28 is an arc-shaped groove with the axis of the connecting pin 22 as its center line. The guide groove 27 and the relief groove 28 are connected. The guide member 13 can slide inside the guide groove 27 and the relief groove 28.

[0103] When inserting the clamp head 2, in order for the pin 411 to rotate smoothly into the traction groove 25, the two clamping members 21 need to be positioned. By cooperating the guide groove 27 on the outside of the clamping member 21 with the guide member 13 on the inside of the slot 11, the two clamping members 21 are kept in a closed state, thereby ensuring that after rotating the traction rod 41, the pin 411 can be smoothly positioned into its corresponding traction groove 25. When the clamping member 21 rotates around the connecting pin 22, the clearance groove 28 on the outside of the clamping member 21 will slide with the guide member 13, and the guide member 13 will not interfere with the rotation of the clamping member 21.

[0104] It is worth noting that when the connecting pin 22 is fitted inside the slot 12, the rotation of the subsequent clamping member 21 is subjected to the axial tension of the traction structure 4, and the cross position of the traction groove 25 is changed, so that the clamping head 2 has the required stability during use. When the traction structure 4 pushes the clamping member 21 forward to reset, before the clamping member 21 is reset, the guide member 13 is always located inside the relief groove 28, which can prevent the clamping head 2 from loosening due to the push of the traction structure 4. When the clamping member 21 is reset, the traction structure 4 stops pushing, and the guide member 13 is located at the junction of the guide groove 27 and the relief groove 28, ready for subsequent disassembly or clamping operations.

[0105] Based on the above implementation plan, see Figure 3 and Figure 4 To facilitate easier entry and exit of the pin 411 into the traction groove 25 via rotation, a transition groove 26 is provided at one end of the traction groove 25; the bottom of the transition groove 26 has an arc-shaped structure. The transition groove 26 is located at the end where the two traction grooves 25 are close together when the clamping member 21 is closed. By rotating the traction rod 41, the pin 411 enters or exits the traction groove 25 via the transition groove 26.

[0106] Based on the above implementation plan, see Figure 7Each grip 32 of the operating unit 3 is equipped with a linkage arm 31 at its end. One end of the linkage arm 31 is rotatably connected to the middle part 1, and the other end is fixedly connected to the grip 32. A reset member 33 is also provided between the two grips 32. The reset member 33 is a "V"-shaped spring piece, and its two ends are fixedly connected to a grip 32 respectively. This solution provides two reset members 33. The linkage arm 31 is linked with the traction rod 41. The movement of the grip 32 drives the traction rod 41 to translate in the second direction. The reset member 33 provides an elastic reset force when the grip 32 is separated.

[0107] Based on the above implementation plan, see Figure 5 Considering the stability of the connection structure between the grip 32 and the middle part 1 when the grip 32 moves, a limiting plate 14 is fixedly connected to one end of the middle part 1 facing the operating part 3. A limiting groove 15 is opened on the plate body of the limiting plate 14 corresponding to the linkage arm 31. The limiting groove 15 is a long groove. The linkage arm 31 passes through the limiting groove 15 and can slide in the limiting groove 15.

[0108] Based on the above implementation plan, see Figure 2 and Figure 7 This solution achieves the translational linkage between the linkage arm 31 and the traction rod 41 through the linkage component 5.

[0109] The linkage assembly 5 includes a linkage housing fixedly mounted on one side of the limiting plate 14. A through groove 54 is provided on the housing, allowing the linkage arm 31 to pass through. A gear 52 is rotatably mounted in the center of the linkage housing. A rack 53 meshes with each side of the gear 52. The two racks 53 are parallel and centrally symmetrical, with their symmetrical reference center being the center of the gear 52. Furthermore, a slide rail 16 is fixedly mounted on the side of the limiting plate 14 facing the linkage assembly 5, corresponding to the racks 53, and the racks 53 and slide rail 16 are slidably connected.

[0110] Gear 52 is coaxially fixed to linkage sleeve 51 on one side. Linkage sleeve 51 has external threads on its outer arm and a hollow internal structure. A sleeve 42 is rotatably mounted on the outside of traction rod 41. Sleeve 42 can rotate relative to traction rod 41, but there will be no axial relative displacement between them. The specific form of this connection structure is not limited. For example, an annular connecting groove can be provided on the outside of traction rod 41, and an annular connecting plate can be provided at one end of sleeve 41, connecting the connecting plate and the connecting groove. Other forms will not be elaborated further. Sleeve 42 has internal threads and is fitted onto the outside of linkage sleeve 51, and is threadedly connected to linkage sleeve 51.

[0111] Furthermore, the sleeve 42 and the interior of the intermediate part 1 are slidably connected along direction two, meaning that the sleeve 42 can only translate within the intermediate part 1 and cannot rotate. This can be achieved in various ways, such as by providing a rectangular slide bar 43 on the outer wall of the sleeve 42 and creating a groove structure corresponding to the slide bar 43 inside the intermediate part 1. Other methods can also be used, which will not be elaborated upon further.

[0112] With this structure, as long as the linkage arm 31 can drive the rack 53 to translate, the linkage sleeve 51 can be rotated through the rack 53 and gear 52, thereby causing the sleeve 42 to move in the middle part 1 along the second direction, thus realizing the movement of the traction rod 41 and its end pin 411, that is, the opening and closing action of the clamping member 21.

[0113] Because the structure of this solution uses the drive effect of the threaded connection between the linkage sleeve 51 and the sleeve 42, the stability of the clamp head 2 can be guaranteed by taking advantage of the self-locking feature of this structure.

[0114] Based on the above implementation plan, see Figure 7 To better lock the clamping head 2, connecting blocks 55 are fixedly installed at the ends of the two racks 53 that are far apart from each other, and pin holes are provided on the connecting blocks 55. In addition, a linkage groove 34 is provided on the linkage arm 31, and a sliding groove 58 is provided on the linkage housing. Both the linkage groove 34 and the sliding groove 58 are elongated grooves.

[0115] A linkage component is provided as the linkage structure between the linkage arm 31 and the rack 53. The linkage component is a "door" shaped structure, including a connecting rod 57, with two linkage pins 56 at each end of the connecting rod 57. The connecting rod 57 is made of elastic material. In the assembled state, the linkage pins 56 are inserted into the pin holes and linkage grooves 34 of the connecting block 55. The upper end of the linkage pin 56 extends through the sliding groove 58 to the outside of the linkage housing, and the connecting rod 57 is located outside the linkage housing.

[0116] With this structure, when the grip 32 moves, the linkage arm 31 drives the linkage pin 56 to move, thereby pulling the connecting block 55, i.e., the rack 53, to move horizontally inside the linkage housing. The elastic connecting rod 57 does not affect the change in the position of the linkage pins 56 at both ends.

[0117] When the handle 32 approaches, that is, when the clamping member 21 is in the clamping state, pulling the connecting rod 57 will pull out the linkage pin 56. At this time, the linkage arm 31 and the connecting block 55 are no longer linked. The linkage arm 31 is reset by the action of the reset member 33, and the position of the connecting block 55 in the clamping state remains unchanged. With the help of the self-locking characteristic of the linkage sleeve 51, the traction rod 41 can remain in a fixed position, thus maintaining the state of the clamping member 21. This prevents the stability of the clamping head 2 from being affected by misoperation.

[0118] When it is necessary to release the locking state of the clamp head 2, simply move the two handles 32 closer together and then re-insert the linkage pin 56 to restore the linkage between the linkage arm 31 and the rack 53. If it is necessary to operate the clamp repeatedly for a short period of time, simply keep the linkage pin 56 in the inserted state.

[0119] Based on the above implementation plan, see Figure 8 After the linkage pin 56 is pulled out, in order to further ensure the stability of the rack 53 and gear 52, a magnetic strip 59 is fixedly installed inside the linkage housing of the linkage assembly 5 on the side near the rack 53. The magnetic strip 59 is correspondingly installed on the outer side of the rack 53, and a pad 510 is fixedly installed on the side of the magnetic strip 59 near the rack 53 to increase the moving resistance of the rack 53. The rack 53 is made of a material that can be magnetically attracted.

[0120] The magnetic strip 59 attracts the rack 53, ensuring it remains pressed against the outer side of the pad 510 (especially important in cases where there is significant clearance between the rack 53 and the slide rail 16), thus preventing accidental slippage between the rack 53 and the gear 52 when not in operation. The pad 510 is made of a high-friction elastic material; when the rack 53 is stationary, it adheres tightly to the outer wall of the rack 53, limiting its movement through friction. This further optimizes the mechanical performance and safety of the clamp.

[0121] Based on the above implementation plan, see Figure 2 In order to facilitate the rotation of the traction rod 41 to drive the pin block 411 to rotate between the traction plates 23, a pull rod 44 is fixedly provided at one end of the traction rod 41 away from the clamp head 2. The pull rod 44 passes through the sleeve 42, the linkage sleeve 51, the gear 52 and the linkage housing. A knob 45 is fixedly provided at the other end of the pull rod 44. The knob 45 is located on the outside of the linkage housing.

[0122] Corresponding to the pull rod 44, the housing of the linkage shell has a through hole 511, and an adjustment groove 512 is provided on the outside of the through hole 511. The adjustment groove 512 is an arc-shaped groove concentric with the through hole 511, and an inclined surface 513 is provided in the upward direction of the adjustment groove 512. A spring pin 46 is provided on the side of the knob 45 near the linkage component 5. The spring pin 46 is located inside the adjustment groove 512 and slides to the outside of the inclined surface 513 to lock the traction structure 4.

[0123] When the axis of pin 411 is parallel to the direction, spring pin 46 is located at the bottom of adjustment groove 512. The knob 45 drives the pull rod 44 and traction rod 41 to rotate. As pin 411 rotates towards the inside of traction groove 25, the knob 45 moves spring pin 46 to the outside of inclined surface 513. Under the action of inclined surface 513, spring pin 46 is compressed, increasing the sliding resistance between the knob 45 and inclined surface 513. This ensures the stability of pin 411 after it rotates to the inside of traction groove 25 and before driving the clamping head 2 to work, preventing pin 411 from reversing and detaching from the inside of traction groove 25. During clamping, pin 411 is restricted by the two traction grooves 25 and cannot rotate on its own; spring pin 46 remains on the outside of inclined surface 513, ensuring the stability of pin 411 during use. Spring pin 46 can be made of spring ball, and a hemispherical groove can be made on the inclined surface 513 away from the adjustment groove 512 to further ensure the stability of the positioning of spring pin 46.

[0124] It is worth noting that the above replacement method has the following advantages:

[0125] Firstly, by setting a pin block 411 at one end of the traction structure 4 and engaging the traction groove 25 between it and the clamping member 21, the clamping head 2 can be fully connected by simply rotating the traction rod 41 after it is directly inserted into the middle part 1. This achieves the effect of easy replacement and positioning of the clamping head 2. The installation angle is limited by the rotation angle of the pin block 411, which ensures the installation accuracy of the clamping head 2 relative to the middle part 1 and the operating part 3.

[0126] Secondly, the guide groove 27 and the guide member 13 work together to ensure that the clamp head 2 always maintains the matching position of the transition groove 26 corresponding to the two clamping members 21 during the insertion process. This avoids the situation where the pin block 411 cannot smoothly enter the traction groove 25 due to the installation angle deviation, reduces the difficulty of the replacement operation, and improves the efficiency of surgical instrument preparation.

[0127] Thirdly, when the pin 411 rotates to the inside of the traction groove 25, the knob 45 drives the spring pin 46 to move to the outside of the inclined surface 513. The squeezing action of the inclined surface 513 on the spring pin 46 increases the sliding resistance, effectively ensuring the stability of the pin 411 after it rotates to the inside of the traction groove 25, and preventing loosening during use.

[0128] Fourthly, after the connecting pin 22 is set inside the slot 12, the rotation of the clamping member 21 is restricted by the axial tension of the traction structure 4. Combined with the cross state of the traction grooves 25 of the two clamping members 21, the clamping head 2 has the required structural stability during use, avoiding displacement deviation during clamping action.

[0129] Fifthly, when the traction structure 4 pushes the clamping member 21 to reset, the guide member 13 is always located inside the relief groove 28 before the clamping member 21 is reset, which can prevent the clamping head 2 from loosening from the middle part 1 due to the pushing action. After reset, the guide member 13 is located at the junction of the guide groove 27 and the relief groove 28, which prepares for subsequent operations and improves the reliability of the structure.

[0130] Advantage six: When clamping and fixing once, the linkage between the linkage arm 31 and the rack 53 can be disconnected by pulling out the linkage pin 56. The traction structure 4 is fixed by the threaded structure of the linkage sleeve 51 and the sleeve 42, which effectively prevents misoperation from affecting the clamping stability of the clamp head 2 and improves the safety of use.

[0131] Based on the above implementation plan, see Figure 9 and Figure 10 To obtain a clearer surgical field during surgery, an illumination element 6 is provided on one side of the middle part 1. The illumination element 6 can illuminate the direction of the clamp head 2. The illumination element 6 can be an LED bulb or other components that can provide illumination light.

[0132] Based on the above implementation plan, see Figure 10 A pressure plate 7 is also provided on one side of the clamp head 2. The pressure plate 7 is a long strip-shaped plate that is slidably connected to the middle part 1, with the sliding direction parallel to the second direction. A push block 71 is provided at the end of the pressure plate 7 away from the clamp head 2 to facilitate pushing the pressure plate 7. The push block 71 is provided with an anti-slip strip. By pushing the push block 71, the pressure plate 7 is pushed towards the clamp head 2. The pressure plate 7 can be used to move and compress tissues that restrict the surgical field, changing their position. Then, the clamp head 2 is used to clamp the required location (such as blood vessels). After clamping, the push block 71 is pulled to retract the pressure plate 7.

[0133] Based on the above implementation plan, see Figure 9To prevent excessive force from the operator during tissue clamping, which could cause overload and injury to the tissue by the clamping member 21, this solution also includes a closing limiting component 8. The closing limiting component 8 is positioned between the two grips 32. The closing limiting component 8 includes a first closing limiting member 81 and a second closing limiting member 82. The ends of the first closing limiting member 81 and the second closing limiting member 82, which are far apart from each other, are rotatably connected to a grip 32, and a torsion spring is provided at the connection point. The opposite ends of the first closing limiting member 81 and the second closing limiting member 82 are provided with a block-slot combination structure that can engage. The block-slot combination structure of this solution includes a locking block at the end of the first closing limiting member 81 and a shaped groove at the end of the second closing limiting member 82. The locking block 81 has an outwardly convex oblique tooth-like structure, and the outer end of the shaped groove facing the locking block is an inclined surface. The internal shape of the shaped groove corresponds to the locking block 81, and the groove wall of the shaped groove away from the locking block 81 forms a barrier structure with a height greater than that of the locking block 81. With this structure, when the grip 32 approaches, the locking block 81 abuts against the end of the irregular groove, causing the first closing limit member 81 and the second closing limit member 82 to rotate. When the locking block 81 is inserted into the irregular groove, the first closing limit member 81 and the second closing limit member 82 return to their original positions under the action of the torsion spring, and a sound is emitted due to the impact, which can alert the user. Even if the user does not notice the impact sound, the blocking structure of the irregular groove applies a blocking force to the locking block 81, making it difficult for the first closing limit member 81 to continue moving forward. This force is fed back to the user's hand, indicating that the clamping device has sufficient clamping force.

[0134] The structure of the baffle can take various forms, such as a flat surface structure that matches the locking block, or a structure that can cover the locking block, as long as it can prevent the locking block 81 from continuing to move. The specific form is not limited. It should be noted that the function of the closing limit component 8 is similar to that of the linkage component 5 mentioned above; both are safety structures during operation. If both structures are to be used together, the groove walls on both sides facing the first closing limit component 81 need to be set as arc-shaped structures. This can achieve the blocking effect of the groove on the handle 32 when it approaches, while also ensuring the reset function of the handle 32 after the linkage pin 56 is removed.

[0135] Furthermore, an unlocking element 83 is provided on one side of the first closing limit member 81. The unlocking element 83 is linked with the first closing limit member 81, and can drive the first closing limit member 81 to rotate. The unlocking element 83 facilitates the separation of the first closing limit member 81 and the second closing limit member 82. The linkage between the unlocking element 83 and the first closing limit member 81 is not limited, as long as it can drive the first closing limit member 81 to rotate.

[0136] In the description of this application and its embodiments, it should be understood that the terms "top", "bottom", "height", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0137] In this application and its embodiments, unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0138] In this application and its embodiments, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0139] The foregoing disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0140] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0141] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A surgical field opening clamp applicator, characterized in that, include: The middle part is a long, hollow structure with a plug-in structure at one end. The clamping head is connected to the middle part via the plug-in structure, and the clamping head includes two rotatably connected clamping members. The operating part is located at the end of the middle part away from the clamp head, and the operating part includes two handles; A traction structure is disposed inside the middle section, and the handle of the operating part can drive the clamping head to perform clamping or releasing actions through the traction structure; the traction structure includes: A traction rod is disposed within the middle section, with one end extending into the interior of the clamping head; the traction rod can translate along the length direction of the middle section, and the traction rod can rotate with its own axis as the rotation reference axis; When the traction rod moves horizontally, it can cause the clamping member to close or separate; when the traction rod rotates, the traction rod can engage or disengage from the clamping member. The insertion structure in the middle part includes: A slot is provided at one end of the middle portion facing the clamp head; the clamp head can be inserted into the slot; A card slot is formed on the wall of the slot, and the card slot is a "U" shaped slot; The clamp head also includes: A connecting pin is used to rotatably connect the two clamping members; both ends of the connecting pin extend to the outside of the two clamping members. A traction plate is fixedly installed at one end of the clamping member facing the middle portion; A notch is formed on the side opposite to the traction plate; After the clamp head is inserted into the middle part, the traction plate is inserted into the slot, and the connecting pin is engaged with the slot; one end of the traction rod extends into the recess. The clamp head also includes: A traction groove is formed on one side of the traction plate where a notch is provided; the traction groove is an inclined groove; the traction grooves on the two traction plates are inclined in opposite directions. The traction structure also includes: Two pin blocks are symmetrically arranged at one end of the traction rod facing the clamp head; the pin blocks can be slidably connected to the traction groove. The intermediate portion also includes: A guide is provided on the groove wall of the slot, and the guide protrudes toward the inside of the slot; The clamp head also includes: A guide groove is formed on the side of the traction plate and clamping member opposite to the recess; when the two clamping members are closed, the length direction of the guide groove is parallel to the axis of the traction rod. The clearance groove is an arc-shaped groove with the axis of the connecting pin as its center line; one end of the clearance groove is connected to the guide groove. The guide member can be slidably connected with the guide groove and the clearance groove.

2. The surgical field opening clamp as described in claim 1, characterized in that, The clamp head also includes: A transition groove is provided for each of the traction grooves. The transition groove is located at one end of the traction groove, and the bottom of the transition groove is an arc surface structure. When the traction rod rotates, the pin block can enter or leave the traction groove through the transition groove.

3. The surgical field opening clamp as described in claim 2, characterized in that, The operating unit also includes: A linkage arm is provided for each of the grips, with one end of the linkage arm rotatably connected to the middle part and the other end fixedly connected to the grip. A reset element is disposed between the two grips, and at least one reset element is provided. The reset element is a "V"-shaped spring. The clamp applicator also includes: The linkage assembly connects the linkage arm to the traction rod.

4. The surgical field opening clamp as described in claim 3, characterized in that, The linkage component includes: A linkage housing is disposed on one side of the middle portion; The gear is rotatably disposed inside the linkage housing; A rack is provided on each side of the gear, and the two racks mesh with the gear respectively, and the two racks are arranged in a centrally symmetrical structure; the linkage arm is linked with the rack and can drive the rack to translate. A linkage sleeve is coaxially and fixedly connected to the gear; the linkage sleeve is hollow inside and has external threads on its outer wall. The traction structure also includes: A sleeve is fitted onto the outside of the traction rod and is rotatably connected to the traction rod; the sleeve and the middle part are slidably connected, and the sliding direction is parallel to the axis of the traction rod; the sleeve is threadedly connected to the linkage sleeve.

5. The surgical field opening clamp as described in claim 4, characterized in that, The linkage arm is provided with a linkage groove, which is a long strip groove. The linkage component also includes: A connecting block is fixedly installed at the end of each rack, and the connecting block is located at the ends of the two racks that are far apart from each other; a through pin hole is opened on the connecting block; The linkage pin can be inserted into the connecting block, and the linkage pin is slidably connected to the linkage groove.

6. The surgical field opening clamp as described in claim 5, characterized in that, The linkage component also includes: A connecting rod, with each end of its body fixedly connected to a linkage pin, and the connecting rod is made of an elastic material; A magnetic strip is disposed inside the linkage housing and is located on one side of the moving path of the rack; the rack is made of a material that can be magnetically attracted. A pad is disposed on the side of the magnetic strip facing the rack; the side of the rack is in contact with the pad.

7. The surgical field opening clamp as described in claim 6, characterized in that, The traction structure also includes: A pull rod is fixedly installed at the end of the traction rod away from the clamp head, and the pull rod and the traction rod are coaxial; The knob is fixedly located at the end of the pull rod away from the clamp head.

8. The surgical field opening clamp as described in claim 7, characterized in that, The end of the pull rod with the knob extends to the side of the linkage housing facing the grip; the traction structure also includes: A spring pin is located on the side of the knob facing the linkage housing; The linkage component also includes: The adjustment groove is an arc-shaped groove formed on the linkage housing, and the spring pin is slidably connected to the adjustment groove; An inclined surface is provided at one end of the adjustment groove.

9. The surgical field opening clamp as described in any one of claims 1-8, characterized in that, Also includes: The pressure plate is a long strip-shaped plate, and the pressure plate is slidably connected to the middle part, with the sliding direction being the axial direction of the traction rod; The pressure plate can slide outwards from the clamp head.

10. The surgical field opening clamp as described in any one of claims 1-8, characterized in that, Also includes: An illumination element is provided on one side of the clamp head; the illumination element is a light-emitting component. A closing limiting component is disposed between the two grips, which can limit the minimum distance between the grips when they approach each other.

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