A fixed needle-guided point reduction forceps

Abstract

The present invention provides a fixed needle-guided point reduction forceps, which belongs to the technical field of medical devices. The fixed needle-guided point reduction forceps provided by the present invention include a forceps handle assembly, a movable tip assembly, a fixed ball end assembly and a guide needle guide assembly. The forceps handle assembly includes a first forceps handle and a second forceps handle; the movable tip assembly is arranged on the first forceps handle, including a slide rail, a slider, a fixed tip and an adjustment member, and the slider is slidably arranged on the slide rail; the fixed ball end assembly includes a connecting member and a fixed ball end, which are arranged on the second forceps handle; the guide needle guide assembly is arranged on the slider, including a fixing member, a guide connecting rod member and a guide ball end, and a through hole through which the fixing needle can pass is arranged in the center of the fixing member, the guide ball end determines the insertion position of the fixing needle, and the guide connecting rod member can determine the implantation direction of the fixing needle. The fixed needle-guided point reduction forceps provided by the present invention can directly guide the implantation direction of the fixing needle, causes little damage to the patient, is simple to operate, and is easy to promote.

Description

Technical Field

[0001] The invention belongs to the technical field of medical instruments, and in particular relates to a fixed needle-guided point reduction forceps. Background Art

[0002] During fracture surgery, it is often necessary to reposition the bones at the fracture site. In this process, reduction forceps are generally used to reposition the bones, and fixation pins are used to position the bones. However, in the process of repositioning the bones, the implantation of fixation pins needs to avoid tissues such as nerves and blood vessels. Blind needle insertion is often faced during the implantation process. After the implantation of the fixation pin, fluoroscopy is required to confirm whether the entry and exit points of the fixation pin and the length of the pin on the opposite side are ideal. During needle insertion, because only the entry point of the fixation pin can be confirmed, the needle cannot accurately find the exit point after being inserted from the entry point. In addition, the use of reduction forceps may also affect the insertion position of the fixation pin, resulting in poor positioning of the fixation pin. The orientation of the fixation pin needs to be adjusted. Therefore, multiple implantation of fixation pins may occur, resulting in large surgical incisions, prolonged operation time, increased risk of iatrogenic damage to the patient's blood vessels and nerves, and even leading to complications. Summary of the invention

[0003] The purpose of the present invention is to provide a fixed needle guided point reduction forceps, aiming to solve the problem that the position of the fixed needle is difficult to determine during implantation and blind insertion of the needle may cause damage to the patient.

[0004] To achieve the above object, the technical solution adopted by the present invention is: to provide a fixed needle-guided point reduction forceps, comprising:

[0005] A clamp handle assembly, the clamp handle assembly comprising a first clamp handle and a second clamp handle that are symmetrically arranged and hinged;

[0006] A movable tip assembly, comprising a slide rail, a slider, a fixed tip and an adjusting member, wherein the slide rail is arranged at an end of the first clamp handle away from the handheld end, the slider is slidably arranged on the slide rail and can slide along the length direction of the slide rail, the fixed tip is arranged at an end of the slider away from the first clamp handle, and the adjusting member is arranged on one side of the slider for adjusting the position of the slider;

[0007] A fixed ball end assembly, comprising a connecting member and a fixed ball end, wherein the connecting member is arranged at an end of the second clamp handle away from the hand-held end, and the fixed ball end is arranged at an end of the connecting member away from the second clamp handle; and

[0008] The guide needle guide assembly includes a fixing part, a guide connecting rod part and a guide ball end, wherein the fixing part is installed on the slider, and the fixing part is provided with a through hole for the fixing needle to pass through, and the guide connecting rod part includes a first connecting rod, a second connecting rod and a third connecting rod connected in sequence, and the fixing part is arranged at an end of the first connecting rod away from the second connecting rod, and the length direction of the second connecting rod is consistent with the axial direction of the through hole, and the guide ball end is arranged at the free end of the third connecting rod, and the guide ball end corresponds to the through hole.

[0009] In a possible implementation, the slider is a rack, the adjusting member includes a gear seat and an adjusting gear, the gear seat is arranged on a side of the slide rail away from the fixed ball end, and the adjusting gear is rotatably mounted on the gear seat and meshes with the rack.

[0010] In a possible implementation, the slide rail and the slider are arc-shaped, the slide rail is provided with a slide groove for accommodating the slider, and the slider can be slidably disposed in the slide groove.

[0011] In a possible implementation, a limit plate is rotatably mounted on the slide rail, and the limit plate covers the notch of the sliding groove and is located on the outer side of the sliding block.

[0012] In a possible implementation, a limiting column is provided on one side of the sliding slot opening away from the rotation axis of the limiting plate, the limiting plate can be rotatably pressed against one side of the limiting column, and the limiting plate and the limiting column are respectively provided with magnetic elements that can attract each other.

[0013] In a possible implementation, a fixing hole is provided at one end of the slider close to the fixing tip, and the fixing member includes an expansion seat and an expansion bolt. The expansion seat is located at one end of the fixing hole and is provided with a plurality of expansion claws arranged in a ring. The expansion bolt is threadedly connected to the expansion seat. The expansion bolt can press the expansion claws tightly against the inner wall of the fixing hole, and the through hole is located at the center of the expansion bolt.

[0014] In a possible implementation, the connecting member includes a first connecting arm and a second connecting arm, and the free ends of the first connecting arm and the second connecting arm are respectively provided with the fixed ball end.

[0015] In a possible implementation, a distance-adjusting bolt for adjusting the distance between the first connecting arm and the second connecting arm is provided between the first connecting arm and the second connecting arm, the distance-adjusting bolt is threadedly connected to the first connecting arm, and the end of the distance-adjusting bolt abuts against the side wall of the second connecting arm.

[0016] In a possible implementation, the third connecting rod is slidable in the length direction of the second connecting rod, and a positioning member for fixing the third connecting rod is provided on the third connecting rod.

[0017] In a possible implementation manner, a first scale is provided on the second connecting rod along the length direction thereof.

[0018] The fixed needle-guided point reduction forceps provided by the present invention have the following beneficial effects:

[0019] Compared with the prior art, the invention comprises a clamp handle assembly, a movable tip assembly, a fixed ball end assembly and a guide needle guide assembly. The clamp handle assembly comprises a first clamp handle and a second clamp handle, both of which are provided with a hand-held end, so as to facilitate holding the device during surgery; the movable tip assembly comprises a slide rail, a slider, a fixed tip and an adjusting member, which is arranged at one end of the first clamp handle, the slider is slidably arranged on the slide rail, the adjusting member is used to adjust the position of the slider, and then adjust the position angle of the fixed tip, and the fixed tip is fixed on the bone, so as to facilitate clamping the bone to be repositioned; the fixed ball end assembly comprises a connecting member and a fixed ball end, which is arranged at one end of the second clamp handle The end, the fixed ball end is against the patient's skin, which causes less damage to the patient's skin, reduces the surgical incision, and is convenient for resetting the bone; the guide needle guide assembly includes a fixing part, a guide connecting rod part and a guide ball end, the fixing part is arranged on the slider, the fixing part and the guide ball end are respectively arranged at the two free ends of the guide connecting rod part, a through hole through which the fixing needle can pass is arranged at the center of the fixing part, and the direction of the through hole is the implantation direction of the fixing needle by rotating the guide connecting rod, so that the implantation direction of the fixing needle can be effectively determined, which is beneficial to avoiding blood vessels and nerves, and there is no need to implant the fixing needle multiple times, thereby reducing damage to the patient, and the operation is simple and easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic structural diagram of a fixed needle-guided point reduction forceps provided in an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of the structure of a mobile tip assembly used in an embodiment of the present invention;

[0023] Figure 3 A schematic diagram of the structure of the expansion seat used in the embodiment of the present invention;

[0024] Figure 4It is a left-side structural schematic diagram of a fixing member used in an embodiment of the present invention;

[0025] Figure 5 A schematic diagram of the assembly structure of the fixing member and the fixing hole used in the embodiment of the present invention;

[0026] Figure 6 The structure of the fixed ball end assembly used in the embodiment of the present invention is schematically shown. Figure 1 ;

[0027] Figure 7 The structure of the fixed ball end assembly used in the embodiment of the present invention is schematically shown. Figure 2 ;

[0028] Figure 8 This is a schematic structural diagram of a positioning member used in an embodiment of the present invention.

[0029] In the figure: 1001, slide rail; 1002, slider; 1003, fixed tip; 1004, fixed hole; 1005, gear seat; 1006, adjusting gear; 1007, adjusting knob; 1008, fixed shaft; 1009, rotating shaft; 1010, limit plate; 1011, limit column; 1012, magnetic element; 2001, fixed ball end; 2002, first connecting arm; 2003, second connecting arm; 2004, distance adjusting bolt; 3001, guide ball end; 3002, first connecting rod; 3003, second connecting rod; 3004, third connecting rod; 3005, through hole; 3006, expansion seat; 3007, expansion bolt; 3008, expansion claw; 3009, sliding sleeve; 3010, positioning bolt; 4, first clamp handle; 5, second clamp handle; 6, fixing needle. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] Please refer to Figures 1 to 5, a specific embodiment of a fixed needle 6-guided point reduction forceps provided by the present invention is now described, including: a clamp handle assembly, a movable tip assembly, a fixed ball end assembly and a guide needle guide assembly; the clamp handle assembly includes a first clamp handle 4 and a second clamp handle 5 that are symmetrically arranged and hinged; the movable tip assembly is arranged at the end of the first clamp handle 4 away from the handheld end, the movable tip assembly includes a slide rail 1001, a slider 1002, a fixed tip 1003 and an adjusting member, the slide rail 1001 is arranged at the end of the first clamp handle 4 away from the handheld end, the slider 1002 is slidably arranged on the slide rail 1001, and can slide along the length direction of the slide rail 1001, the fixed tip 1003 is arranged at the end of the slider 1002 away from the handheld end of the first clamp handle 4, and the adjusting member is arranged on one side of the slider 1002 for adjusting the position of the slider 1002; the fixed ball end assembly is arranged at the end of the second clamp handle 5 away from the handheld end, the fixed ball end assembly includes a connecting member and a fixed The ball end 2001, the connecting piece is arranged at the end of the second clamp handle 5 away from the hand-held end, and the fixed ball end 2001 is arranged at the end of the connecting piece away from the second clamp handle 5; the guide needle guide assembly is arranged at the end of the slider 1002 close to the fixed tip 1003, and is arranged on the side of the slider 1002 away from the fixed ball end 2001, the guide needle guide assembly includes a fixing piece, a guide connecting rod and a guide ball end 3001, the fixing piece is installed on the slider 1002, and the fixing piece is provided with a through hole 3005 for the fixing needle 6 to pass through, the guide connecting rod comprises a first connecting rod 3002, a second connecting rod 3003 and a third connecting rod 3004 connected in sequence, the fixing piece is arranged at the end of the first connecting rod 3002 away from the second connecting rod 3003, the axial direction of the through hole 3005 in the length direction of the second connecting rod 3003 is kept consistent, and the guide ball end 3001 is arranged at the free end of the third connecting rod 3004 in the direction of the second connecting rod 3003, that is, the implantation direction of the fixing needle 6.

[0032] Compared with the prior art, the present invention provides a fixed needle 6-guided point reduction forceps, which includes a forceps handle assembly, a movable tip assembly, a fixed ball end assembly and a guide needle guide assembly. The forceps handle assembly includes a first forceps handle 4 and a second forceps handle 5, both of which are provided with a handheld end, so that the device can be held hand-held during surgery; the movable tip assembly includes a slide rail 1001, a slider 1002, a fixed tip 1003 and an adjusting member, which is arranged at one end of the first forceps handle 4, and the slider 1002 is slidably arranged on the slide rail 1001. The adjusting member is used to adjust the position of the slider 1002, and then adjust the position angle of the fixed tip 1003. The fixed tip 1003 is fixed on the bone, so as to clamp the bone to be reduced; the fixed ball end assembly includes a connecting member and a fixed ball End 2001 is arranged at one end of the second clamp handle 5, and the fixed ball end 2001 is against the patient's skin, which causes less damage to the patient's skin and a small surgical incision, making it easy to reposition the bone; the guide needle guide assembly includes a fixing part, a guide connecting rod part and a guide ball end 3001, and the fixing part can be arranged on the slider 1002, and the fixing part and the guide ball end 3001 are respectively arranged at the two free ends of the guide connecting rod part, and a through hole 3005 through which the fixing needle 6 can pass is arranged at the center of the fixing part. By rotating the guide connecting rod, the direction of the through hole 3005 is the implantation direction of the fixing needle 6, so that the implantation direction of the fixing needle 6 can be effectively determined, which is beneficial to avoiding blood vessels and nerves, and there is no need to implant the fixing needle 6 multiple times, thereby reducing damage to the patient, being simple to operate and easy to promote.

[0033] For details, please refer to Figures 1 to 5, including a clamp handle assembly, a movable tip assembly, a fixed ball end assembly and a guide needle guide assembly, the clamp handle assembly includes a first clamp handle 4 and a second clamp handle 5, the movable tip assembly includes a slide rail 1001, a slider 1002, a fixed tip 1003 and an adjusting piece, the fixed ball end assembly includes a connecting piece and a fixed ball end 2001, the guide needle guide assembly includes a fixing piece, a guide connecting rod piece and a guide ball end 3001, the slide rail 1001 is arranged at the end of the first clamp handle 4 away from the handheld end, the slider 1002 is slidably arranged on the slide rail 1001 along the length direction of the slide rail 1001, so as to adjust the angle direction of the fixed tip 1003, and the slider 1002 is detachable, the adjusting piece is arranged on one side of the slider 1002, so as to adjust the position of the slider 1002, the fixed tip 1003 is fixed on the bone to avoid bone displacement during the reduction process; the connecting piece is arranged at the end of the second clamp handle 5 away from the handheld end, the fixed ball end 2001 is arranged at the free end of the connecting piece, the fixed ball end 2001 is located outside the body and fixed on the skin The guide needle guide assembly is arranged at one end of the slider 1002 close to the fixed tip 1003, and is arranged at a side away from the fixed ball end 2001. A through hole 3005 through which the fixed needle 6 can pass is arranged at the center of the fixing piece. The guide link member includes a first link 3002, a second link 3003 and a third link 3004 arranged in sequence, and the three are arranged perpendicular to each other. The fixing piece is arranged at the free end of the first link 3002, and the guide ball end 3001 is arranged at the free end of the third link 3004. The axis of the through hole 3005 is arranged parallel to the axis of the second link 3003. The fixing piece is rotatably arranged on the slider 1002. By rotating and adjusting the guide link member, it is adjusted to a suitable angle position. At this time, the direction of the second link 3003 is the direction of the through hole 3005, that is, the insertion direction of the positioning needle, which can effectively determine the implantation direction of the fixing needle 6, is conducive to avoiding blood vessels and nerves, and does not need to implant the fixing needle 6 multiple times, thereby reducing damage to the patient, and is simple to operate and easy to promote.

[0034] As a method of using a fixed needle 6-guided point reduction forceps provided by the present invention, the first clamp handle 4 and the second clamp handle 5 are opened, and the adjusting piece is adjusted according to actual conditions to adjust the position angle of the fixed tip 1003, the fixed tip 1003 is fixed on the bone, and the fixed ball end 2001 is against the outside of the patient's skin. The fixing piece of the guide needle guide assembly is inserted into the slider 1002, and the position angle of the fixing piece is adjusted. The guide ball end 3001 is placed at the needle exit position of the fixed needle 6. At this time, the fixed needle 6 passes through the through hole 3005 set in the fixing piece to implant the fixed needle 6. After the implantation of the fixed needle 6 is completed, the slider 1002 is separated from the slide rail 1001, the first clamp handle 4 and the second clamp handle 5 are removed from the patient, and finally the slider 1002 is taken out along the direction of the fixed needle 6 to complete the implantation of the fixed needle 6.

[0035] As a specific implementation of the fixed needle 6-guided point reduction forceps provided by the present invention, please refer to Figure 1 , Figure 2 The adjusting member includes a gear seat 1005 and an adjusting gear 1006 . The gear seat 1005 is arranged on a side of the slide rail 1001 away from the fixed ball end 2001 . The adjusting gear 1006 is rotatably mounted on the gear seat 1005 and meshes with the slider 1002 .

[0036] For details, please refer to Figure 1 , Figure 2 The adjusting member includes a gear seat 1005 and an adjusting gear 1006. The gear seat 1005 is arranged on the outer side of the slide rail 1001. A first mounting groove is arranged on the gear seat 1005. A fixed rotating shaft 1008 is arranged at the bottom of the first mounting groove. The adjusting gear 1006 is rotatably arranged on the fixed rotating shaft 1008. An adjusting knob 1007 is also arranged. The adjusting knob 1007 is arranged on the side of the adjusting gear 1006 away from the gear seat 1005. By rotating the adjusting knob 1007, the adjusting gear 1006 can be rotated. The adjusting gear 1006 matches the slider 1002, thereby driving the slider 1002 to slide in the slide rail 1001 along the length direction of the slide rail 1001.

[0037] For further information, please refer to Figure 1 , Figure 2 An anti-slip strip is provided around the adjusting knob 1007 to facilitate the rotation of the adjusting knob 1007.

[0038] As a specific implementation of the fixed needle 6-guided point reduction forceps provided by the present invention, please refer to Figure 1 , Figure 2 The slide rail 1001 and the slider 1002 are arc-shaped. The slide rail 1001 is provided with a slide groove for accommodating the slider 1002. The slider 1002 can be slidably arranged in the slide groove.

[0039] For details, please refer to Figure 1 , Figure 2 The slide rail 1001 and the slider 1002 are arc-shaped, and the center of the slide rail 1001 coincides with the center of the slider 1002. A slide groove is provided on the slide rail 1001 along the length direction, and the slider 1002 can be slidably arranged in the slide groove, so that the slider 1002 can slide in the length direction of the slide rail 1001, thereby adjusting the azimuth angle of the fixed tip 1003.

[0040] As a specific implementation of the fixed needle 6-guided point reduction forceps provided by the present invention, please refer to Figure 1 , Figure 2 A limit plate 1010 is rotatably mounted on the slide rail 1001 , and the limit plate 1010 covers the notch of the sliding groove and is located on the outer side of the slider 1002 .

[0041] For details, please refer to Figure 1 , Figure 2 A limit plate 1010 is provided on the slide rail 1001, and a rotating shaft 1009 is provided on one side of the sliding groove notch. The limit plate 1010 is rotatably connected to the rotating shaft 1009. The limit plate 1010 rotates to cover the sliding groove notch, thereby preventing the slider 1002 from falling off from the slide rail 1001 during use of the device, thereby increasing the stability of the device.

[0042] For further information, please refer to Figure 1 , Figure 2 A plurality of limit plates 1010 are arranged along the length direction of the slide rail 1001 to increase the stability of the device.

[0043] As a specific implementation of the fixed needle 6-guided point reduction forceps provided by the present invention, please refer to Figure 1 , Figure 2 A limiting column 1011 is provided on the side of the sliding slot away from the rotating shaft 1009, and the limiting plate 1010 can be rotatably pressed against one side of the limiting column 1011. The limiting plate 1010 and the limiting column 1011 are respectively provided with magnetic suction parts 1012 that can attract each other.

[0044] For details, please refer to Figure 1 , Figure 2 A limiting column 1011 is arranged on one side of the sliding slot, and the limiting column 1011 and the rotating shaft 1009 are respectively arranged on both sides of the sliding slot. The limiting column 1011 can limit the rotation of the limiting plate 1010, and a magnetic attraction part 1012 is arranged between the limiting plate 1010 and the limiting column 1011 to prevent the limiting plate 1010 and the limiting column 1011 from being separated during use of the device, thereby increasing the stability of the device.

[0045] As a specific implementation of the fixed needle 6-guided point reduction forceps provided by the present invention, please refer to Figure 1 , Figures 3 to 5 A fixing hole 1004 is provided at one end of the slider 1002 close to the fixed tip 1003, and the fixing part includes an expansion seat 3006 and an expansion bolt 3007. The expansion seat 3006 is located at one end of the fixing hole 1004 and is provided with a plurality of expansion claws 3008 arranged in a ring shape. The expansion bolt 3007 is threadedly connected to the expansion seat 3006. The expansion bolt 3007 can press the expansion claws 3008 tightly against the inner wall of the fixing hole 1004, and the through hole 3005 is located at the center of the expansion bolt 3007.

[0046] For details, please refer to Figure 1 , Figures 3 to 5The fixing part includes an expansion seat 3006 and an expansion bolt 3007. A plurality of expansion claws 3008 are arranged on one side of the expansion seat 3006. The expansion claws 3008 are arranged in a circular shape. The expansion claws 3008 can be inserted into the fixing hole 1004 and can be rotated in the fixing hole 1004 to facilitate adjustment of the angle of the guide connecting rod. The expansion bolt 3007 is implanted from the other end of the expansion seat 3006 to open the surrounding expansion claws 3008, thereby fixing the expansion seat 3006 in the fixing hole 1004. A through hole 3005 is arranged in the center of the expansion bolt 3007. The through hole 3005 through which the fixing needle 6 passes is implanted into the human body.

[0047] For further information, please refer to Figure 1 , Figures 3 to 5 The inner wall of the fixing hole 1004 is arc-shaped and protrudes in the direction away from the axis of the fixing hole 1004. The outer wall of the expansion claw 3008 is arc-shaped and protrudes in the direction away from the axis of the expansion seat 3006, which facilitates the adjustment of the angle between the expansion seat 3006 and the fixing hole 1004 and enhances the locking strength.

[0048] As a specific implementation of the fixed needle 6-guided point reduction forceps provided by the present invention, please refer to Figure 1 , Figure 6 , Figure 7 The connecting member includes a first connecting arm 2002 and a second connecting arm 2003 , and the free ends of the first connecting arm 2002 and the second connecting arm 2003 are respectively provided with fixed ball ends 2001 .

[0049] For details, please refer to Figure 1 , Figure 6 , Figure 7 The connecting member includes a first connecting arm 2002 and a second connecting arm 2003. The first connecting arm 2002 and the second connecting arm 2003 are sequentially arranged in a direction perpendicular to the second clamp handle 5. The free ends of the first connecting arm 2002 and the second connecting arm 2003 are respectively provided with fixed ball ends 2001 to increase the stability of the device during use.

[0050] For further information, please refer to Figure 1 , Figure 6 , Figure 7 The sides of the two fixed ball ends 2001 that are close to each other are respectively fitting planes that can fit together.

[0051] As a specific implementation of the fixed needle 6-guided point reduction forceps provided by the present invention, please refer to Figure 1 , Figure 6 , Figure 7A distance adjusting bolt 2004 for adjusting the distance between the first connecting arm 2002 and the second connecting arm 2003 is provided between the first connecting arm 2002 and the second connecting arm 2003 . The distance adjusting bolt 2004 is threadedly connected to the first connecting arm 2002 , and the end of the distance adjusting bolt 2004 abuts against the side wall of the second connecting arm 2003 .

[0052] For details, please refer to Figure 1 , Figure 6 , Figure 7 A distance-adjusting bolt 2004 is provided between the first connecting arm 2002 and the second connecting arm 2003. The distance-adjusting bolt 2004 is used to adjust the distance between the two. The distance-adjusting bolt 2004 is threadedly connected to the first connecting arm 2002, and the end of the distance-adjusting bolt 2004 abuts against the second connecting arm 2003. By rotating the distance-adjusting bolt 2004, the distance between the first connecting arm 2002 and the second connecting arm 2003 can be adjusted.

[0053] For further information, please refer to Figure 1 , Figure 6 , Figure 7 An anti-slip strip is provided in the circumferential direction of one end of the distance adjusting bolt 2004 away from the second connecting arm 2003 to facilitate the rotation of the distance adjusting bolt 2004.

[0054] As a specific implementation of the fixed needle 6-guided point reduction forceps provided by the present invention, please refer to Figure 1 , Figure 8 The third connecting rod 3004 can slide in the length direction of the second connecting rod 3003, and a positioning piece for fixing the third connecting rod 3004 is provided on the third connecting rod 3004.

[0055] For details, please refer to Figure 1 , Figure 8 A positioning piece is provided on the third connecting rod 3004, and the positioning piece is used to fix the third connecting rod 3004 to prevent the third connecting rod 3004 from being displaced during use. The positioning piece includes a sliding sleeve 3009 and a positioning bolt 3010. The sliding sleeve 3009 is sleeved on the second connecting rod 3003. The positioning bolt 3010 passes through the side wall of the sliding sleeve 3009 and abuts against the second connecting rod 3003 to lock the position of the third connecting rod 3004.

[0056] As a specific implementation of the fixed needle 6-guided point reduction forceps provided by the present invention, a first scale is provided on the second connecting rod 3003 along its length direction.

[0057] Specifically, a first scale is provided on the second connecting rod 3003, and the first scale is provided along the length direction, and the distance between the fixing part and the guide ball end 3001 can be determined. A second scale is provided on the fixing needle 6, and the second scale is provided along the length direction, which is convenient for confirming the implanted length of the fixing needle 6. The first scale cooperates with the second scale to confirm the implanted length of the fixing needle 6 to avoid the fixing needle 6 penetrating the skin and causing damage to the patient.

[0058] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fixed needle-guided point reduction forceps, characterized in that: include: A clamp handle assembly, the clamp handle assembly comprising a first clamp handle and a second clamp handle that are symmetrically arranged and hinged; A movable tip assembly, comprising a slide rail, a slider, a fixed tip and an adjusting member, wherein the slide rail is arranged at an end of the first clamp handle away from the handheld end, the slider is slidably arranged on the slide rail and can slide along the length direction of the slide rail, the fixed tip is arranged at an end of the slider away from the first clamp handle, and the adjusting member is arranged on one side of the slider for adjusting the position of the slider; A fixed ball end assembly, comprising a connecting member and a fixed ball end, wherein the connecting member is arranged at an end of the second clamp handle away from the handheld end, and the fixed ball end is arranged at an end of the connecting member away from the second clamp handle; and The guide needle guide assembly comprises a fixing part, a guide link part and a guide ball end, the fixing part is installed on the slider, the fixing part is provided with a through hole for the fixing needle to pass through, the guide link part comprises a first link, a second link and a third link connected in sequence, the fixing part is arranged at an end of the first link away from the second link, the length direction of the second link is consistent with the axial direction of the through hole, the guide ball end is arranged at the free end of the third link, the guide ball end corresponds to the through hole, and the slider is provided with a fixing hole at one end close to the fixed tip, the fixing part comprises an expansion seat and an expansion bolt, the expansion seat is provided with a plurality of expansion claws arranged in an annular manner at one end of the fixing hole, the expansion bolt is threadedly connected to the expansion seat, the expansion bolt can press the expansion claws tightly against the inner wall of the fixing hole, the through hole is located at the center of the expansion bolt, the inner side wall of the fixing hole is arc-shaped, protruding in the direction away from the axis of the fixing hole, and the outer side wall of the expansion claw is arc-shaped, protruding in the direction away from the axis of the expansion seat.

2. A fixed needle-guided point reduction forceps as claimed in claim 1, characterized in that: The slider is a rack, and the adjusting member includes a gear seat and an adjusting gear. The gear seat is arranged on a side of the slide rail away from the fixed ball end, and the adjusting gear is rotatably mounted on the gear seat and meshes with the rack.

3. A fixed needle-guided point reduction forceps as claimed in claim 1, characterized in that: The slide rail and the slider are arc-shaped. The slide rail is provided with a slide groove for accommodating the slider. The slider can be slidably arranged in the slide groove.

4. A fixed needle-guided point reduction forceps as claimed in claim 3, characterized in that: A limit plate is rotatably mounted on the slide rail, and the limit plate cover is arranged at the notch of the sliding groove and is located at the outer side of the sliding block.

5. A fixed needle-guided point reduction forceps as claimed in claim 4, characterized in that: A limiting column is arranged on one side of the sliding slot opening away from the rotation axis of the limiting plate, the limiting plate can be rotated to lean against one side of the limiting column, and the limiting plate and the limiting column are respectively provided with magnetic suction parts that can attract each other.

6. A fixed needle-guided point reduction forceps as claimed in claim 1, characterized in that: The connecting member comprises a first connecting arm and a second connecting arm, and the free ends of the first connecting arm and the second connecting arm are respectively provided with the fixed ball ends.

7. A fixed needle-guided point reduction forceps as claimed in claim 6, characterized in that: A distance-adjusting bolt for adjusting the distance between the first connecting arm and the second connecting arm is provided between the first connecting arm and the second connecting arm. The distance-adjusting bolt is threadedly connected to the first connecting arm, and the end of the distance-adjusting bolt abuts against the side wall of the second connecting arm.

8. The fixed needle-guided point reduction forceps according to claim 1, characterized in that: The third connecting rod can slide in the length direction of the second connecting rod, and a positioning piece for fixing the third connecting rod is provided on the third connecting rod.

9. A fixed needle-guided point reduction forceps as claimed in claim 1, characterized in that: The second connecting rod is provided with a first scale along its length direction.

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