Calcaneus reduction forceps
By designing a calcaneal reduction clamp with concave and convex surfaces to hold the calcaneus on the outer and inner sides respectively, the problem of bone fragments being crushed due to localized pressure from traditional reduction clamps is solved, achieving effective reduction of the calcaneus and cosmetic results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE FIRST AFFILIATED HOSPITAL OF SUN YAT SEN UNIV
- Filing Date
- 2025-01-14
- Publication Date
- 2026-04-21
AI Technical Summary
Traditional calcaneal reduction forceps can easily cause the comminuted bone fragments to shatter when dealing with comminuted fractures, making effective reduction difficult.
A calcaneal reduction clamp was designed, comprising a first clamp and a second clamp. The first clamp is concave and the second clamp is convex, respectively abutting the lateral and medial sides of the calcaneus. By applying overall pressure, it corrects widening deformity and varus deformity, increases the contact area, and avoids excessive local pressure.
It effectively prevents comminuted bone fragments from fracturing during the clamping and repositioning process, achieving good repositioning of the calcaneus and reducing surgical time and operational difficulty.
Smart Images
Figure CN224140917U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of orthopedic surgical instruments, and in particular to a calcaneal reduction clamp. Background Technology
[0002] Calcaneal fractures are a common type of fracture in clinical practice, and open reduction and internal fixation is a commonly used method. With advancements in medicine and patients' increasing emphasis on cosmetic dermatology, percutaneous minimally invasive closed reduction and internal fixation techniques for calcaneal fractures can reduce surgical complications, promote rapid recovery, and minimize incision scars, achieving cosmetic results. These techniques are becoming increasingly widely used in clinical practice.
[0003] Currently, in percutaneous minimally invasive closed reduction and internal fixation techniques for calcaneal fractures, a calcaneal retractor is generally used to open the subtalar joint space, correct shortening and varus deformity, and vertically pry open and reduce the collapsed calcaneal articular surface. Then, horizontally, calcaneal reduction forceps are used to clamp and reduce the fracture fragments. Finally, Kirschner wires or screws are inserted into the calcaneus through a small incision for fixation.
[0004] However, traditional calcaneal reduction forceps typically apply local pressure to the calcaneus. When the calcaneus is fractured and comminuted, local pressure can easily cause the comminuted bone fragments to break apart, making it difficult to effectively reduce the calcaneus. Utility Model Content
[0005] Based on this, the present invention provides a calcaneal reduction clamp that can solve or at least alleviate the above-mentioned technical problems.
[0006] This utility model provides a calcaneal reduction clamp, comprising:
[0007] A first clamping body, connected to a first clamping shaft; and
[0008] A second clamping body is connected to a second clamping plate, which is rotatably connected to the first clamping plate. The second clamping body is positioned opposite to the first clamping body, with the surface of the first clamping body facing the second clamping body being concave and the surface of the second clamping body facing the first clamping body being convex. The first clamping body and the second clamping body each have a front end and a rear end positioned opposite to each other. The first clamping body and the second clamping body each have a top end and a bottom end positioned opposite to each other. The distance between the front end and the rear end of the first clamping body is 6cm-12cm, and the distance between the top end and the bottom end of the first clamping body is 2cm-8cm. The distance between the front end and the rear end of the second clamping body is 5cm-11cm, and the distance between the top end and the bottom end of the second clamping body is 2cm-7cm.
[0009] The calcaneal reduction clamp of this application, in use, has a first clamp body abutting against the lateral side of the calcaneus and a second clamp body abutting against the medial side of the calcaneus. Through overall pressure applied to both the lateral and medial sides of the calcaneus, it can correct widening deformities and varus deformities of the calcaneal fracture fragments, thus facilitating better reduction with the clamp. Because the surface of the first clamp body facing the second clamp body is concave, the shape of this surface corresponds to the lateral side of the calcaneus to a certain extent, thereby increasing the contact area between the first clamp body and the lateral side of the calcaneus. Because the surface of the second clamp body facing the first clamp body is convex, the shape of this surface corresponds to the medial side of the calcaneus to a certain extent, thereby increasing the contact area between the second clamp body and the medial side of the calcaneus. The direction from the tail end of the first clamp body to the front end, and the direction from the tail end of the second clamp body to the front end, respectively correspond to the direction from the heel to the toe. The relative direction between the top and bottom ends roughly corresponds to the relative direction between the sole of the foot and the subtalar joint. Because the distance between the front and rear ends of the first clamp is 6cm-12cm, and the distance between the top and bottom ends is 2cm-8cm, the first clamp can roughly and completely support the lateral side of the calcaneus, effectively ensuring the contact area between the first clamp and the lateral side of the calcaneus. Because the distance between the front and rear ends of the second clamp is 5cm-11cm, and the distance between the top and bottom ends is 2cm-7cm, the second clamp can roughly and completely support the medial side of the calcaneus, effectively ensuring the contact area between the second clamp and the medial side of the calcaneus. The calcaneal reduction clamp of this application, during use, can apply even pressure to both the lateral and medial sides of the calcaneus, avoiding excessive local pressure on the calcaneus and preventing further fragmentation of bone fragments during clamping and reduction, effectively performing the calcaneal reduction operation.
[0010] In one embodiment, the distance between the top end of the first clamp and the top end of the second clamp is greater than the distance between the bottom end of the first clamp and the bottom end of the second clamp, and the distance between the front end of the first clamp and the front end of the second clamp is greater than the distance between the tail end of the first clamp and the tail end of the second clamp.
[0011] In one embodiment, the first clamp body is provided with a plurality of guide holes, the guide holes passing through the two opposing surfaces of the first clamp body; and / or, the second clamp body is provided with a plurality of guide holes, the guide holes passing through the two opposing surfaces of the second clamp body.
[0012] In one embodiment, the first clamp body includes an outer clamping plate connected to the first clamp body and a flexible first pad, the first pad covering the outer clamping plate on the side near the second clamp body; and / or, the second clamp body includes an inner clamping plate connected to the second clamp body and a flexible second pad, the second pad covering the inner clamping plate on the side near the first clamp body.
[0013] In one embodiment, the second clamp is provided with a groove, the groove being recessed relative to the surface of the second clamp facing the first clamp; the groove extends between the front end and the top end of the second clamp.
[0014] In one embodiment, at least one of the first clamp and the second clamp has a notch formed at its edge, the notch being distributed at the tail end and / or the bottom end.
[0015] In one embodiment, the first clamp has an outer opening on a side opposite to the second clamp and an inner opening on a side facing the second clamp; the first clamp forms an internal channel between the outer opening and the inner opening; the relative direction between the outer opening and the inner opening is inclined relative to the surface of the first clamp facing the second clamp; the area of the inner opening is larger than the area of the outer opening, or the width of the inner opening is larger than the width of the outer opening.
[0016] In one embodiment, the second clamp body is provided with a protrusion that protrudes from the second clamp body onto the surface facing the first clamp body.
[0017] In one embodiment, the first clamp body is connected to the bottom end of the first clamp body and the second clamp body is connected to the bottom end of the second clamp body, or the first clamp body is connected to the tail end of the first clamp body and the second clamp body is connected to the tail end of the second clamp body.
[0018] In one embodiment, the first clamp body has a first bent bar, the first bent bar having a first segment, a second segment, and a third segment, the first segment and the third segment being respectively connected to the first clamping body, the first segment and the third segment being spaced apart, the second segment being connected between the first segment and the third segment, and the second segment being spaced apart from the first clamping body; and / or, the second clamp body has a second bent bar, the second bent bar having a fourth segment, a fifth segment, and a sixth segment, the fourth segment and the sixth segment being respectively connected to the second clamping body, the fourth segment and the sixth segment being spaced apart, the fifth segment being connected between the fourth segment and the sixth segment, and the fifth segment being spaced apart from the second clamping body. Attached Figure Description
[0019] Figure 1 This is a perspective view of a calcaneal reduction clamp according to an embodiment of this application, which is used to clamp the calcaneus of the left foot.
[0020] Figure 2 This is an exploded view of the calcaneal reduction forceps shown in the figure.
[0021] Figure 3 for Figure 1 The three-dimensional sectional view of the calcaneal reduction clamp shown.
[0022] Figure 4 for Figure 1 The calcaneal reduction clamp shown is a three-dimensional sectional view from another angle.
[0023] Figure 5 This is a perspective view of a calcaneal reduction clamp according to another embodiment of this application, which is used to clamp the calcaneus of the right foot.
[0024] Reference numerals: 100, calcaneal reduction clamp; 20, first clamp body; 201 / 401, front end; 202 / 402, tail end; 203 / 403, top end; 204 / 404, bottom end; 205 / 405, notch; 206 / 406, guide hole; 21, outer clamp plate; 22, first pad; 24, lateral opening; 25, medial opening; 26, internal channel; 30, first clamp body; 31, first... 32. Clamping bar; 321. First bending bar; 322. First bar segment; 323. Second bar segment; 324. Third bar segment; 33 / 53. Finger ring; 40. Second clamping body; 41. Inner clamping plate; 42. Second pad block; 43. Groove; 47. Protrusion; 50. Second clamping body; 51. Second clamping bar; 52. Second bending bar; 521. Fourth bar segment; 522. Fifth bar segment; 523. Sixth bar segment; 60. Locking assembly. Detailed Implementation
[0025] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0026] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, integral connections, mechanical connections, electrical connections, direct connections, indirect connections via an intermediate medium, or internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0028] The technical solutions provided by the embodiments of this application are described below with reference to the accompanying drawings.
[0029] Combination Figure 1 As shown, this application provides a calcaneal reduction clamp 100, which is used in orthopedic surgery to clamp the calcaneus from both sides to reduce its position.
[0030] Specifically, in combination Figure 1 and Figure 2 As shown, the calcaneal reduction forceps 100 includes: a first clamp body 20, a second clamp body 40, a first clamping body 30 connected to the first clamp body 20, and a second clamping body 50 connected to the second clamp body 40. The second clamping body 50 is rotatably connected to the first clamping body 30. The second clamping body 40 is disposed opposite to the first clamping body 20, with the surface of the first clamping body 20 facing the second clamping body 40 being concave and the surface of the second clamping body 40 facing the first clamping body 20 being convex. The first clamping body 20 has a front end 201 and a tail end 202 disposed opposite to each other, and the second clamping body 40 has a front end 401 and a tail end 402 disposed opposite to each other. The first clamping body 20 has a top end 203 and a bottom end 204 disposed opposite to each other, and the second clamping body 40 has a top end 403 and a bottom end 404 disposed opposite to each other. The distance between the front end 201 and the tail end 202 of the first clamping body 20 ranges from 6cm to 12cm, and the distance between the top end 203 and the bottom end 204 of the first clamping body 20 ranges from 2cm to 8cm. The distance between the front end 401 and the rear end 402 of the second clamp 40 is 5cm-11cm, and the distance between the top end 403 and the bottom end 404 of the second clamp 40 is 2cm-7cm.
[0031] The calcaneal reduction clamp 100 of this application, in use, has a first clamp 20 abutting against the lateral side of the calcaneus and a second clamp 40 abutting against the medial side of the calcaneus. Through overall pressure applied to both the lateral and medial sides of the calcaneus, it can correct widening deformities and varus deformities of the calcaneal fracture fragments, thus facilitating better reduction by the calcaneal reduction clamp 100. Because the surface of the first clamp 20 facing the second clamp 40 is concave, the shape of this surface of the first clamp 20 can correspond to the lateral side of the calcaneus to a certain extent, thereby increasing the contact area between the first clamp 20 and the lateral side of the calcaneus. Similarly, because the surface of the second clamp 40 facing the first clamp 20 is convex, the shape of this surface of the second clamp 40 can correspond to the medial side of the calcaneus to a certain extent, thereby increasing the contact area between the second clamp 40 and the medial side of the calcaneus. The direction from the tail end 202 of the first clamp 20 to the front end 201 of the first clamp 20, and the direction from the tail end 402 of the second clamp 40 to the front end 401 of the second clamp 40, respectively correspond to the direction from the heel to the toe. The relative direction between the top and bottom ends roughly corresponds to the relative direction between the sole of the foot and the subtalar joint. Since the distance between the front end 201 and the tail end 202 of the first clamp 20 ranges from 6cm to 12cm, and the distance between the top end 203 and the bottom end 204 of the first clamp 20 ranges from 2cm to 8cm, the first clamp 20 can roughly and completely support the lateral side of the calcaneus, effectively ensuring the contact area between the first clamp 20 and the lateral side of the calcaneus. Since the distance between the front end 401 and the rear end 402 of the second clamp 40 ranges from 5cm to 11cm, and the distance between the top end 403 and the bottom end 404 of the second clamp 40 ranges from 2cm to 7cm, the second clamp 40 can roughly and completely abut against the medial side of the calcaneus, effectively ensuring the contact area between the second clamp 40 and the medial side of the calcaneus. The calcaneus reduction clamp 100 of this application, during use, can apply even pressure to both the lateral and medial sides of the calcaneus, avoiding excessive local pressure on the calcaneus and preventing further fragmentation of comminuted bone fragments during clamping and reduction, thus effectively performing the calcaneus reduction operation.
[0032] Understandably, the medial side of the calcaneus is the side of the calcaneus with the suspensory process, and the lateral side of the calcaneus is the side of the calcaneus that is opposite to the suspensory process.
[0033] Understandably, combined Figure 1 and Figure 5 As shown, since the calcaneus of the left foot and the calcaneus of the right foot are roughly mirror-symmetrical, the calcaneus reduction clamp 100 for the left foot and the calcaneus reduction clamp 100 for the right foot are roughly mirror-symmetrically arranged.
[0034] Specifically, for a concave surface, it can be understood that the middle region of the surface is recessed relative to the outer periphery. For a convex surface, it can be understood that the middle region of the surface is convex relative to the outer periphery. Optionally, the surface of the first clamp 20 facing the second clamp 40 is approximately a concave arc surface. The surface of the second clamp 40 facing the first clamp 20 is approximately a convex arc surface.
[0035] In some implementations, combined Figure 3 and Figure 4 As shown, the distance between the top end 203 of the first clamp 20 and the top end 403 of the second clamp 40 is greater than the distance between the bottom end 204 of the first clamp 20 and the bottom end 404 of the second clamp 40, and the distance between the front end 201 of the first clamp 20 and the front end 401 of the second clamp 40 is greater than the distance between the tail end 202 of the first clamp 20 and the tail end 402 of the second clamp 40. This allows the relative space between the first clamp 20 and the second clamp 40 to adapt to the relative shape between the lateral and medial sides of the calcaneus, which is beneficial to the balanced distribution of reduction pressure on the calcaneus.
[0036] Optionally, the distance between the front end 201 and the rear end 202 of the first clamping body 20 is 9cm. The distance between the top end 203 and the bottom end 204 of the first clamping body 20 is 5cm. Optionally, the thickness of the first clamping body 20 ranges from 0.5cm to 1cm.
[0037] In some implementations, combined Figure 3 and Figure 4 As shown, the first clamp 20 includes an outer clamping plate 21 connected to the first clamping body 30 and a flexible first pad 22. The first pad 22 covers the side of the outer clamping plate 21 near the second clamp 40. Through the flexible deformation of the first pad 22, the first clamp 20 can fit more fully against the lateral side of the calcaneus, further reducing the local pressure exerted by the first clamp 20 on the lateral side of the calcaneus and preventing the first clamp 20 from pinching and injuring the tissues on the lateral side of the calcaneus. Optionally, the first pad 22 is made of silicone or sponge.
[0038] In some implementations, combined Figure 1 and Figure 2 As shown, the first clamp 20 is provided with several guide holes 206, which extend between two opposing surfaces of the first clamp 20. Specifically, the guide holes 206 are used to guide the Kirschner wire into the calcaneal fracture fragment, enabling the Kirschner wire to temporarily fix the calcaneal fracture fragment. Under the guiding and positioning effect of the guide holes 206, the deviation of the Kirschner wire when drilling into the calcaneal fracture fragment is reduced, and the Kirschner wire is inserted into the calcaneal fracture fragment more accurately, which can quickly and accurately reduce and fix the calcaneus, reducing operation time and difficulty.
[0039] Optionally, a number of guide holes 206 are distributed along the edge of the first clamp 20 to guide the Kirschner wire into the harder area of the calcaneus. Optionally, the first clamp 20 has 4 to 14 guide holes 206.
[0040] Understandably, the guide hole 206 provided in the first clamping body 20 passes through the outer clamping plate 21 and the first pad 22.
[0041] Specifically, a calcaneal retractor is required during the reduction of the calcaneus. The calcaneal retractor has two relatively movable fixation posts. One post allows an internal fixation material to pass through, which is drilled into the bone below and behind the calcaneus. The other post allows another internal fixation material to pass through, which is drilled into other bones near the calcaneus. As the two posts move relative to each other, the contracted and deformed calcaneal fracture fragments are reduced. Subsequently, the reduction shape of the individual calcaneal fracture fragments is maintained by clamping with calcaneal reduction clamps 100. Exemplarily, the internal fixation material can be at least Kirschner wires or Stokes wires.
[0042] In some implementations, combined Figure 1 and Figure 2 As shown, the first clamp 20 has a notch 205 formed on its edge. Optionally, the notch 205 is distributed at the tail end 202 of the first clamp 20. Optionally, the notch 205 is distributed at the bottom end 204 of the first clamp 20. Optionally, the notch 205 is distributed at both the tail end 202 and the bottom end 204 of the first clamp 20. Specifically, the notch 205 is used to accommodate the fixing post of the calcaneal retractor, thereby preventing mechanical interference between the first clamp 20 and the fixing post of the calcaneal retractor, while ensuring a large contact area between the first clamp 20 and the outer side of the calcaneus. Optionally, the notch 205 is formed on both the outer clamp 21 and the first pad 22. Optionally, the size of the notch 205 is 1cm*0.8cm, but other sizes can also be used.
[0043] In some implementations, combined Figure 3As shown, the first clamp 20 has an outer opening 24 on the side opposite to the second clamp 40, and an inner opening 25 on the side facing the second clamp 40. An internal channel 26 is formed between the outer opening 24 and the inner opening 25. The relative direction between the outer opening 24 and the inner opening 25 is inclined relative to the surface of the first clamp 20 facing the second clamp 40. Specifically, the angle between the relative direction between the outer opening 24 and the inner opening 25 and the surface of the first clamp 20 is 20°-30°. When a collapse deformity occurs on the articular surface of the calcaneus, a push rod can be inserted into the internal channel 26 through the outer opening 24 and exit through the inner opening 25, exerting a pushing effect on the area near the articular surface of the calcaneus, thereby reducing the collapse deformity of the calcaneal articular surface.
[0044] Understandably, the distance between the inner opening 25 and the top end 203 of the first clamp 20 is less than the distance between the inner opening 25 and the bottom end 204 of the first clamp 20, and the distance between the outer opening 24 and the top end 203 of the first clamp 20 is greater than the distance between the outer opening 24 and the bottom end 204 of the first clamp 20, so that the push rod can push against the area near the calcaneal articular surface in a direction from the sole of the foot to the subtalar joint.
[0045] Optionally, an outer opening 24 is formed in the outer clamping plate 21, and an inner opening 25 is formed in the first pad 22. An internal channel 26 extends through the outer clamping plate 21 and the first pad 22. Optionally, the outer opening 24 has a size of 1.5cm × 0.8cm, but other sizes may also be used.
[0046] Optionally, combined Figure 3 and Figure 4 As shown, the width of the inner opening 25 is greater than the width of the outer opening 24, which allows the top rod to have a larger range of angle adjustment after passing through the first clamp 20, which is beneficial for the top rod to form a stable abutment fit with the part near the calcaneal joint surface.
[0047] Optionally, the area of the inner opening 25 is larger than the area of the outer opening 24, thereby giving the top rod a greater range of angle adjustment after passing through the first clamp 20.
[0048] In some implementations, combined Figure 2 As shown, the second clamp 40 is provided with a protrusion 47. The second clamp 40 has a surface opposite to the first clamp 20, and the protrusion 47 is provided to protrude from this surface. The protrusion 47 is used to abut against the suspensory plexus of the calcaneus, thereby repositioning the portion of the calcaneus near the suspensory plexus. Optionally, all or part of the surface of the protrusion 47 is hemispherical.
[0049] Optionally, combined Figure 2As shown, the distance between the protrusion 47 and the top end 403 of the second clamping body 40 is less than the distance between the protrusion 47 and the bottom end 404 of the second clamping body 40, and the distance between the protrusion 47 and the front end 401 of the second clamping body 40 is close to the distance between the protrusion 47 and the tail end 402 of the second clamping body 40, thereby allowing the position of the protrusion 47 to correspond more accurately with the position of the bearing protrusion. Optionally, the protrusion 47 is formed on the second pad 42. Optionally, the protrusion 47 is formed on the inner clamping plate 41 and the second pad 42.
[0050] Optionally, the distance between the front end 401 and the rear end 402 of the second clamping body 40 is 8cm. The distance between the top end 203 and the bottom end 204 of the first clamping body 20 is 4cm. Optionally, the thickness of the second clamping body 40 is in the range of 1.0cm-1.5cm.
[0051] In some implementations, combined Figure 3 and Figure 4 As shown, the second clamp 40 includes an inner clamping plate 41 connected to the second clamping body 50 and a flexible second pad 42. The second pad 42 covers the inner clamping plate 41 on the side near the first clamp 20. Through the flexible deformation of the second pad 42, the second clamp 40 can more fully conform to the medial side of the calcaneus, further reducing the local pressure generated by the second clamp 40 on the medial side of the calcaneus and preventing the second clamp 40 from pinching and injuring the tissues on the lateral side of the calcaneus. Optionally, the second pad 42 is made of silicone or sponge.
[0052] In some implementations, combined Figure 1 and Figure 2 As shown, the second clamp 40 is provided with a plurality of guide holes 406, which penetrate between two opposing surfaces of the second clamp 40. Optionally, the plurality of guide holes 406 are distributed along the edge of the second clamp 40 to guide the Kirschner wire into the harder region of the calcaneus. Further, the number of guide holes 406 provided in the second clamp 40 is less than the number of guide holes 406 provided in the first clamp 20. Optionally, the number of guide holes 406 provided in the second clamp 40 is 4 to 12.
[0053] Understandably, the guide hole 406 provided in the second clamping body 40 passes through the inner clamping plate 41 and the second pad 42.
[0054] In some implementations, combined Figure 1As shown, the second clip 40 is provided with a groove 43, which is recessed relative to the surface of the second clip 40 facing the first clip 20. The groove 43 extends between the front end 401 and the top end 403 of the second clip 40, thereby providing a space for the neurovascular sheath in the tarsal tunnel located on the medial side of the calcaneus, and avoiding compressive damage to the neurovascular sheath in the tarsal tunnel located on the medial side of the calcaneus caused by the second clip 40.
[0055] Optionally, the groove 43 can be formed by the concave deformation of the second pad 42. Alternatively, the groove 43 can be formed by the concave deformation of the inner clamping plate 41 and the second pad 42.
[0056] Optionally, the width of the groove 43 is approximately 1 cm, and the depth of the groove 43 is approximately 1 cm. Optionally, the length of the groove 43 ranges from 5 cm to 7 cm.
[0057] In some implementations, combined Figure 1 and Figure 2 As shown, the second clamp 40 has a notch 405 formed on its edge. Optionally, the notch 405 is distributed at the tail end 402 of the second clamp 40. Optionally, the notch 405 is distributed at the bottom end 404 of the second clamp 40. Optionally, the notch 405 is distributed at both the tail end 402 and the bottom end 404 of the second clamp 40. Specifically, the notch 405 is used to accommodate the fixation post of the calcaneal diffuser, thereby preventing mechanical interference between the second clamp 40 and the fixation post of the calcaneal diffuser, while ensuring a large contact area between the second clamp 40 and the outer side of the calcaneus. Optionally, the notch 405 is formed simultaneously in the inner clamp 41 and the second pad 42.
[0058] Optionally, combined Figure 1 and Figure 2 As shown, the first clamp body 30 is connected to the bottom end 204 of the first clamp body 20, and the second clamp body 50 is connected to the bottom end 404 of the second clamp body 40. Specifically, the first clamp body 30 is connected to the bottom end of the outer clamping plate 21, and the second clamp body 50 is connected to the bottom end of the inner clamping plate 41.
[0059] Optionally, the first clamp body 30 is connected to the tail end 202 of the first clamp body 20, and the second clamp body 50 is connected to the tail end 402 of the second clamp body 40. Specifically, the first clamp body 30 is connected to the tail end of the outer clamp plate 21, and the second clamp body 50 is connected to the tail end of the inner clamp plate 41.
[0060] In some implementations, combined Figure 2 As shown, the first clamp body 30 includes a first clamp bar 31 and a first bent bar 32. The first bent bar 32 is connected between the first clamp bar 31 and the first clamp body 20.
[0061] In some implementations, combined Figure 2As shown, the second clamp body 50 includes a second clamp bar 51 and a second bent bar 52. The second bent bar 52 is connected between the second clamp bar 51 and the second clamp body 40. Specifically, the second clamp bar 51 is rotatably connected to the first clamp bar 31. Further, the second clamp bar 51 and the first clamp bar 31 maintain a rotatable engagement under the constraint of a rotating shaft. Specifically, finger rings are connected to the ends of the first clamp bar 31 and the second clamp bar 51, respectively, allowing adjustment of the relative angle between the first clamp bar 31 and the second clamp bar 51 by inserting a finger into the finger ring. More specifically, a finger ring 33 is connected to the end of the first clamp bar 31 away from the first bent bar 32, and another finger ring 53 is connected to the end of the second clamp bar 51 away from the second bent bar 52.
[0062] Optionally, the first clamping bar 31 can also be directly connected to the first clamping body 20. Optionally, the second clamping bar 51 can also be directly connected to the second clamping body 40.
[0063] Optionally, combined Figure 1 and Figure 2 As shown, a locking assembly 60 connects the first clamp bar 31 and the second clamp bar 51. The locking assembly 60 is used to limit the expansion and change of the included angle between the first clamp bar 31 and the second clamp bar 51, so that the first clamp body 20 and the second clamp body 40 remain in close contact with both sides of the calcaneus. Understandably, when the included angle between the first clamp bar 31 and the second clamp bar 51 increases, the distance between the first clamp body 20 and the second clamp body 40 increases. When the included angle between the first clamp bar 31 and the second clamp bar 51 decreases, the distance between the first clamp body 20 and the second clamp body 40 decreases.
[0064] In some implementations, combined Figure 2 As shown, the first curved rod 32 has a first rod segment 321, a second rod segment 322, and a third rod segment 323. The first rod segment 321 and the third rod segment 323 are respectively connected to the first clamping body 20. The first rod segment 321 and the third rod segment 323 are spaced apart. The second rod segment 322 is connected between the first rod segment 321 and the third rod segment 323. The second rod segment 322 is spaced apart from the first clamping body 20, thereby enclosing a certain passage space between the first curved rod 32 and the edge of the first clamping body 20. Surgical instruments can contact the calcaneus through this space. At the same time, the top rod can also pass through this passage space. Specifically, the second rod segment 322 is connected to the first clamping rod 31.
[0065] Optionally, the two nodes divide the bottom edge of the first clamping body 20 into three equal parts, and the connection positions of the first rod segment 321 and the third rod segment 323 with the first clamping body 20 correspond to these two nodes. Optionally, the tangent at one end of the first rod segment 321 or the third rod segment 323 is approximately perpendicular to the bottom edge of the first clamping body 20, and the other end of the first rod segment 321 or the third rod segment 323 bends towards the side closer to the second clamping body 40. Further, a portion of the first rod segment 321 or the third rod segment 323 is perpendicular to the bottom edge of the first clamping body 20, and the length of this portion ranges from 1cm to 3cm. Further, another portion of the first rod segment 321 or the third rod segment 323 is bent towards the second clamping body 40, and the length of this portion ranges from 1cm to 3cm.
[0066] In some implementations, combined Figure 2 As shown, the second curved rod 52 has a fourth rod segment 521, a fifth rod segment 522, and a sixth rod segment 523. The fourth rod segment 521 and the sixth rod segment 523 are respectively connected to the second clamping body 40. The fourth rod segment 521 and the sixth rod segment 523 are spaced apart. The fifth rod segment 522 is connected between the fourth rod segment 521 and the sixth rod segment 523. The fifth rod segment 522 is spaced apart from the second clamping body 40, thereby creating a certain passage space between the second curved rod 52 and the edge of the second clamping body 40, through which surgical instruments can contact the calcaneus. Specifically, the fifth rod segment 522 is connected to the second clamping rod 51.
[0067] Optionally, the two nodes divide the bottom edge of the second clamping body 40 into three equal parts, and the connection positions of the fourth rod segment 521 and the sixth rod segment 523 with the second clamping body 40 correspond to these two nodes. Optionally, the tangent at one end of the fourth rod segment 521 or the sixth rod segment 523 is approximately perpendicular to the bottom edge of the second clamping body 40, and the other end of the fourth rod segment 521 or the sixth rod segment 523 bends towards the side closer to the first clamping body 20. Further, a portion of the fourth rod segment 521 or the sixth rod segment 523 is perpendicular to the bottom edge of the second clamping body 40, and the length of this portion ranges from 1cm to 3cm. Further, another portion of the fourth rod segment 521 or the sixth rod segment 523 is bent towards the first clamping body 20, and the length of this portion ranges from 1cm to 3cm.
[0068] The above embodiments are merely descriptions of preferred embodiments of this application and are not intended to limit the scope of this application. Any modifications and improvements made by those skilled in the art to the technical solutions of this application without departing from the spirit of this application should fall within the protection scope defined by the claims of this application.
Claims
1. A calcaneal reduction forceps characterized by, include: The first clamping body is connected to the first clamping shaft; and A second clamping body is connected to a second clamping plate, which is rotatably connected to the first clamping plate. The second clamping body is positioned opposite to the first clamping body, with the surface of the first clamping body facing the second clamping body being concave and the surface of the second clamping body facing the first clamping body being convex. The first clamping body and the second clamping body each have a front end and a rear end positioned opposite to each other. The first clamping body and the second clamping body each have a top end and a bottom end positioned opposite to each other. The distance between the front end and the rear end of the first clamping body is 6cm-12cm, and the distance between the top end and the bottom end of the first clamping body is 2cm-8cm. The distance between the front end and the rear end of the second clamping body is 5cm-11cm, and the distance between the top end and the bottom end of the second clamping body is 2cm-7cm.
2. The calcaneus reduction forceps according to claim 1, wherein, The distance between the top of the first clamp and the top of the second clamp is greater than the distance between the bottom of the first clamp and the bottom of the second clamp, and the distance between the front end of the first clamp and the front end of the second clamp is greater than the distance between the tail end of the first clamp and the tail end of the second clamp.
3. The calcaneus reduction forceps according to claim 1, wherein, The first clamp body is provided with a plurality of guide holes, which pass through the two opposing surfaces of the first clamp body; and / or, the second clamp body is provided with a plurality of guide holes, which pass through the two opposing surfaces of the second clamp body.
4. The calcaneus reduction forceps according to Claim 1, wherein, The first clamp body includes an outer clamping plate connected to the first clamp body and a flexible first pad, the first pad covering the outer clamping plate on the side near the second clamp body; and / or, the second clamp body includes an inner clamping plate connected to the second clamp body and a flexible second pad, the second pad covering the inner clamping plate on the side near the first clamp body.
5. The calcaneus replacement forceps according to claim 1, wherein The second clamp is provided with a groove, which is recessed relative to the surface of the second clamp facing the first clamp; the groove extends between the front end and the top end of the second clamp.
6. The calcaneus reduction forceps according to Claim 1, wherein, At least one of the first clamp and the second clamp has a notch formed at its edge, and the notch is distributed at the tail end and / or the bottom end.
7. The calcaneus replacement forceps according to claim 1, wherein The first clamp has an outer opening on the side opposite to the second clamp and an inner opening on the side facing the second clamp; the first clamp forms an internal channel between the outer opening and the inner opening; the relative direction between the outer opening and the inner opening is inclined relative to the surface of the first clamp facing the second clamp; the area of the inner opening is larger than the area of the outer opening, or the width of the inner opening is larger than the width of the outer opening.
8. The calcaneus reduction forceps according to Claim 1, wherein, The second clamp has a protrusion that protrudes from the surface of the second clamp toward the first clamp.
9. The calcaneus reduction forceps according to Claim 1, wherein, The first clamp body is connected to the bottom end of the first clamp body and the second clamp body is connected to the bottom end of the second clamp body, or the first clamp body is connected to the tail end of the first clamp body and the second clamp body is connected to the tail end of the second clamp body.
10. The calcaneus reduction forceps according to Claim 1, wherein, The first clamp body has a first bent rod, the first bent rod having a first rod segment, a second rod segment, and a third rod segment, the first rod segment and the third rod segment being respectively connected to the first clamping body, the first rod segment and the third rod segment being spaced apart, the second rod segment being connected between the first rod segment and the third rod segment, and the second rod segment being spaced apart from the first clamping body; and / or, the second clamp body has a second bent rod, the second bent rod having a fourth rod segment, a fifth rod segment, and a sixth rod segment, the fourth rod segment and the sixth rod segment being respectively connected to the second clamping body, the fourth rod segment and the sixth rod segment being spaced apart, the fifth rod segment being connected between the fourth rod segment and the sixth rod segment, and the fifth rod segment being spaced apart from the second clamping body.