Threading fixing clamp for thighbone lesser trochanter

Abstract

The utility model relates to the field of orthopedic medical instruments, in particular to thighbone lesser trochanter threading fixing forceps which comprise a first forceps handle and a second forceps handle which are detachably connected, a guide groove is formed in the outer side of a clamping portion of the first forceps handle, and a guide hole communicated with the guide groove is formed in a jaw position. A through hole penetrating through the clamping part of the second plier handle is formed in the clamping part of the second plier handle, and a limiting groove is formed in the jaw of the first plier handle. Compared with the prior art, the pair of fixing forceps has the advantages that compared with the prior art, the guide groove and the guide hole are integrated on the first forceps handle, the structure is simpler, the pair of fixing forceps can be directly used without installation, operation is fast, operation time can be shortened, and pain of a patient is relieved; and the jaw is provided with a limiting groove, so that the small rotor can be firmly clamped.

Description

Technical Field

[0001] This utility model relates to the field of orthopedic medical devices, specifically to a femoral lesser trochanter suture fixation clamp. Background Technology

[0002] Fractures of the lesser trochanter of the femur are among the most common fractures in orthopedics. These fractures significantly reduce the femur's resistance to external loads and torsional rigidity. The proximal segment of the fracture is subjected to traction from the iliopsoas, gluteus medius, and other external rotator muscles, resulting in flexion, abduction, and external rotation deformities. Therefore, fixation of the lesser trochanter is a crucial factor in the treatment of intertrochanteric fractures. Current surgical procedures require large incisions during the drilling and fixation of the lesser trochanter, increasing patient trauma and bleeding. Furthermore, existing fixation clamps are prone to loosening of the lesser trochanter during surgery, further exacerbating patient trauma. After the lesser trochanter of the femur is clamped and reduced using fixation forceps, it needs to be fixed with rivets. First, the lesser trochanter is reduced using fixation forceps and held in its initial position. Then, a hole is drilled in the lesser trochanter, and rivets are fixed inside the hole. Metal wires are attached to both ends of the rivets to fix the wires to the lesser trochanter. Finally, the wires are tied to the femur to fix the lesser trochanter. However, this surgical method inevitably requires cutting a relatively large area of ​​muscle, increasing patient trauma and bleeding. Furthermore, the fixation forceps used to fix the lesser trochanter are prone to loosening. The fixation forceps in patent CN1 12401999A, entitled "A Femoral Lesser Trochanter Fixation Device," allow for small-incision surgery and can effectively clamp the lesser trochanter. However, this fixation forceps has a complex structure and requires multiple steps to clamp the lesser trochanter and fix the rivets, prolonging the operation time and increasing patient discomfort. Utility Model Content

[0003] To address the aforementioned technical problems, the purpose of this utility model is to provide a femoral lesser trochanter suture fixation clamp.

[0004] The objective of this utility model is achieved by the following technical solution. A femoral lesser trochanter suture fixation clamp according to this utility model includes a detachably connected first clamp handle and a second clamp handle. The first clamp handle has a guide groove on the outer side of its clamping portion and a guide hole communicating with the guide groove at the jaw position. The second clamp handle has a through hole penetrating its clamping portion, and the first clamp handle has a limiting groove in its jaw.

[0005] Compared with the prior art, the advantages of this utility model are as follows: Compared with the prior art, the guide groove and guide hole of this fixing forceps are integrated on the first forceps handle, which makes the structure simpler and can be used directly without installation, making the operation quick, shortening the operation time and reducing the patient's pain; the jaws are equipped with limiting grooves, which can firmly clamp the small rotor.

[0006] Furthermore, the jaws of the first clamping part of the first clamping handle are provided with a boss, the boss is provided with a guide hole, the guide groove is smoothly connected with the guide hole, and the inner side of the boss is provided with a limiting groove.

[0007] Compared with the prior art, the advantages of this utility model are: when the clamping clamp is tightened, the boss provides space for the limiting groove and the guide hole to avoid each other. The limiting groove can avoid the guide hole and the through hole, and can firmly clamp the small rotor without interfering with the rivet fixing connection.

[0008] Furthermore, a pin is installed on the first hinge portion of the first pliers handle and a threaded hole is provided, the threaded hole being located on a circle centered on the pin; the second hinge portion of the second pliers handle is provided with a rotating groove and an arc-shaped hole, the rotating groove being an open groove with a semi-circular hole on its inner side, and the arc-shaped hole being centered on the center of the semi-circular hole of the rotating groove; the pin can be inserted into and rotated within the semi-circular hole of the rotating groove, the distance between the pin and the threaded hole is equal to the distance between the center line of the semi-circular hole at the bottom of the rotating groove and the center line between the arcs at both ends of the arc-shaped hole, when the first pliers handle and the second pliers handle are hinged, the projection of the threaded hole on the second hinge portion falls within the arc-shaped hole; when the first pliers handle and the second pliers handle are hinged, the bolt can pass through the arc-shaped hole and be screwed into the threaded hole.

[0009] Compared with the prior art, the advantages of this utility model are: the hinge of the two clamp handles is easy to hinge after the two clamp handles are inserted into the surgical incision through the mutually rotating structure (pin, rotating groove), making the operation simpler; the two clamp handles are fixed by the locking structure (threaded hole, bolt, arc hole), and the small rotor can be clamped and fixed in position after the gripping part is tightened.

[0010] Furthermore, the outer side of the rotating groove is a flared opening.

[0011] Compared with the prior art, the advantage of this utility model is that the two clamp handles can be hinged more quickly during operation.

[0012] Furthermore, after the first and second pliers are connected, their jaws can approach and abut against each other. The distance between the first clamping part of the first pliers and the second clamping part of the second pliers gradually increases and then decreases from the jaws to the hinge part of the two.

[0013] Compared with the prior art, the advantages of this utility model are that: there is space between the clamping parts of the two clamp handles to accommodate the femur, which facilitates operation.

[0014] Furthermore, after the first pliers handle and the second pliers handle are connected and the jaws are close together, the opening of the through hole on the second pliers handle near the jaws can be aligned with the guide hole on the first pliers handle, and the jaws of the second pliers handle can be aligned with the limiting groove.

[0015] Compared with the prior art, the advantages of this utility model are: it makes it easy to lead the metal wire out from the through hole, while the limiting groove firmly clamps the small rotor without interference.

[0016] Furthermore, after the first clamp handle is connected to the second clamp handle, the opening of the through hole on the second clamp handle, away from the jaws, faces outwards from the hinge of the two clamp handles.

[0017] Compared with the prior art, the advantages of this utility model are: after the metal wire is led out from the through hole, it is easy to tighten the metal wire and then remove the clamp handle.

[0018] Furthermore, both the first and second clamp handles have anti-slip textures on their gripping parts.

[0019] Compared with the prior art, the advantage of this utility model is that it makes it easier for medical personnel to hold firmly.

[0020] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of an embodiment of the femoral lesser trochanter suture fixation clamp of this utility model;

[0022] Figure 2 for Figure 1 A diagram from another perspective;

[0023] Figure 3 for Figure 1 A schematic diagram of the first clamp handle;

[0024] Figure 4 for Figure 1 A schematic diagram of the second clamp handle;

[0025] Figure 5 for Figure 1 Enlarged diagram of point A in the middle.

[0026] [Attached image labels]

[0027] 1-First clamp handle, 101-First clamping part, 102-First gripping part, 103-First hinge part, 104-Guide groove, 105-Guide hole, 106-Limiting groove, 107-Threaded hole, 108-Boss;

[0028] 2-Second clamp handle, 201-Second clamping part, 202-Second gripping part, 203-Second hinge part, 204-Through hole, 205-Rotating groove, 206-Arc-shaped hole;

[0029] 3-Pin;

[0030] 4- Bolts. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments.

[0032] like Figures 1 to 5 The figure shows a specific embodiment of the femoral lesser trochanter suture fixation clamp of the present invention, including a first clamp handle 1, a second clamp handle 2, a pin 3, and a bolt 4.

[0033] The hinge is the point where the first clamp handle 1 and the second clamp handle 2 are hinged together. One side of the hinge is the clamping part of the first clamp handle 1 and the second clamp handle 2, and the other side is the gripping part of the first clamp handle 1 and the second clamp handle 2.

[0034] The first clamp handle 1 includes a first clamping part 101, a first gripping part 102, and a first hinge part 103. The outer wall of the first clamping part 101 is provided with a guide groove 104, which extends from the first hinge part 103 to the jaws at the end of the first clamping part 101. A boss 108 is provided at the jaw position of the first clamping part 101, and a guide hole 105 is provided on the boss 108. The guide groove 104 and the guide hole 105 are smoothly connected. A limiting groove 106 is provided on the inner side of the boss 108, and the limiting groove 106 is offset from the guide hole 105. A pin 3 is mounted on the first hinge part 103, and a threaded hole 107 is provided, which is located on a circle centered on the pin 3. The first gripping part 102 is provided with anti-slip texture.

[0035] The second clamp handle 2 includes a second clamping part 201, a second gripping part 202, and a second hinge part 203. The second clamping part 201 has a through hole penetrating through it. The second hinge part 203 has a rotating groove 205 and an arc-shaped hole 206. The rotating groove 205 is an open groove with a semi-circular hole on the inner side and a flared opening on the outer side. The arc-shaped hole 206 is centered on the center of the semi-circular hole at the bottom of the rotating groove 205. The second gripping part 202 has anti-slip texture.

[0036] The pin 3 can be engaged in the semi-circular hole at the bottom of the rotating groove 205, allowing the first clamp handle 1 and the second clamp handle 2 to be hinged. The distance between the pin 3 and the threaded hole 107 is equal to the distance between the center of the semi-circular hole at the bottom of the rotating groove 205 and the center line between the two arcs at the ends of the arc-shaped hole 206. When the first clamp handle 1 and the second clamp handle 2 are hinged and rotated, the projection of the threaded hole 107 on the second hinge part 203 falls into the arc-shaped hole 206. When the first clamp handle 1 and the second clamp handle 2 are hinged and rotated to a certain position, the first clamp handle 1 and the second clamp handle 2 can be fixed by passing the bolt 4 through the arc-shaped hole 206 and screwing it into the threaded hole 107.

[0037] After the first clamp handle 1 and the second clamp handle 2 are hinged, their jaws can approach and abut against each other. The distance between the first clamping part 101 and the second clamping part 102 gradually increases and then decreases from the jaws to the hinge, so that while the jaws are clamping the small rotor, the distance between the two clamping parts can accommodate the femur. After the jaws of the first clamp handle 1 and the second clamp handle 2 approach each other, the opening of the through hole 204 on the second clamp handle 2 near the jaws can be aligned with the guide hole 105 on the first clamp handle 1, and the jaws of the second clamp handle 2 can be aligned with the limiting groove 106, which facilitates the positioning and clamping of the small rotor. After the first clamp handle 1 and the second clamp handle 2 are hinged, the opening of the through hole 204 on the second clamp handle 2 away from the jaws faces outward from the hinge of the two clamp handles.

[0038] The working process of the fixation forceps is as follows: Before surgery, the first forceps handle 1 and the second forceps handle 2 are set separately, with the pin 3 fixed on the first forceps handle 1. A surgical incision is made in the skin and flesh outside the femur. To facilitate surgical operation, the surgical incision is located on the lateral side of the femur, with the lesser trochanter of the femur separated from the surgical incision by the femur. The first clamping part 101 on the first forceps handle 1 is inserted into the surgical incision, passing around one side of the femur and approaching the lesser trochanter. The second clamping part 201 on the second forceps handle 2 is inserted into the surgical incision, passing around the other side of the femur and approaching the lesser trochanter. The two forceps handles are inserted into the surgical incision separately, which can reduce the size of the surgical incision. Then, the pin 3 is inserted into the rotating groove 205. The gripping parts of the two forceps handles are operated to clamp the lesser trochanter and reset it. Then, the bolt 4 is passed through the arc-shaped hole 206 and screwed into the threaded hole 107 for threaded connection. After tightening, the lesser trochanter of the femur is fixed. The two clamp handles are then fixed. A drill bit is then used to drill along the guide groove 104, through the guide hole 105, and against the small rotor. After drilling, the rivet is pushed into the small rotor along the guide groove 104 and the guide hole 105, and screwed in to fix the rivet to the small rotor. After the rivet is fixed, the end of the metal wire near the guide hole 105 remains outside the surgical opening. The other end of the metal wire is hooked with a soft material and inserted into the small rotor through the through hole 204 on the second clamp handle 2. The hook then pulls the metal wire out and leads it to the outside of the surgical opening through the through hole 204. The metal wires on both sides of the rivet are tightened to fix the small rotor to the femur. Then the two clamp handles are removed, and the metal wires on both sides of the rivet are connected and fixed to the outside of the femur near the surgical opening, thereby fixing the small rotor to the femur.

[0039] Compared to existing technologies, this fixing forceps integrates the guide groove 104 and guide hole 105 onto the first forceps handle 1, resulting in a simpler structure. It can be used directly without installation, allowing for quick operation, shortening surgical time, and reducing patient discomfort. The jaws are equipped with a limiting groove 106, which, when clamping, avoids the guide hole 105 and through hole 204, ensuring a secure grip on the small rotor without interfering with the rivet connection. The hinge of the two forceps handles, through a mutually rotating structure (pin 3, rotating groove 205), facilitates easy hinge engagement after the two forceps handles are inserted into the surgical incision, simplifying operation. The two forceps handles are fixed by a locking structure (threaded hole 107, bolt 4, arc-shaped hole 206), allowing the small rotor to be clamped and its position fixed after gripping the holding part.

[0040] The above description is merely a preferred embodiment of this utility model. Any simple modifications, equivalent changes, and alterations made by those skilled in the art to the above embodiments based on the technical essence of this utility model without departing from the scope of the technical solution of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. A femoral lesser trochanter suture fixation clamp, comprising a detachably connected first clamp handle and a second clamp handle, characterized in that: The first pliers handle has a guide groove on the outside of its clamping part and a guide hole communicating with the guide groove at the jaw position. The second pliers handle has a through hole penetrating its clamping part inside, and the first pliers handle has a limiting groove inside its jaw.

2. The femoral lesser trochanter suture fixation clamp according to claim 1, characterized in that: The jaws of the first clamping part of the first clamping handle are provided with a boss, the boss is provided with a guide hole, the guide groove is smoothly connected with the guide hole, and the inner side of the boss is provided with a limiting groove.

3. The femoral lesser trochanter suture fixation clamp according to claim 1, characterized in that: The first hinge portion of the first pliers handle is fitted with a pin and has a threaded hole, which is located on a circle centered on the pin. The second hinge portion of the second pliers handle has a rotating groove and an arc-shaped hole. The rotating groove is an open groove with a semi-circular hole on its inner side. The arc-shaped hole is centered on the center of the semi-circular hole in the rotating groove. The pin can be inserted into and rotated within the semi-circular hole of the rotating groove. The distance between the pin and the threaded hole is equal to the distance between the center line of the semi-circular hole at the bottom of the rotating groove and the center line of the arc at both ends of the arc-shaped hole. When the first pliers handle and the second pliers handle are hinged, the projection of the threaded hole on the second hinge portion falls within the arc-shaped hole. When the first pliers handle and the second pliers handle are hinged, the bolt can pass through the arc-shaped hole and be screwed into the threaded hole.

4. The femoral lesser trochanter suture fixation clamp according to claim 3, characterized in that: The outer side of the rotating groove is a flared opening.

5. The femoral lesser trochanter suture fixation clamp according to claim 1, characterized in that: After the first and second pliers are connected, their jaws can approach and abut against each other. The distance between the first clamping part of the first pliers and the second clamping part of the second pliers gradually increases and then decreases from the jaws to the hinge part of the two.

6. The femoral lesser trochanter suture fixation clamp according to claim 1, characterized in that: When the first pliers handle is connected to the second pliers handle and the jaws are close together, the opening of the through hole on the second pliers handle near the jaws can be aligned with the guide hole on the first pliers handle, and the jaws of the second pliers handle can be aligned with the limiting groove.

7. The femoral lesser trochanter suture fixation clamp according to claim 1, characterized in that: After the first clamp handle is connected to the second clamp handle, the opening of the through hole on the second clamp handle, away from the jaws, faces outward from the hinge of the two clamp handles.

8. The femoral lesser trochanter suture fixation clamp according to claim 1, characterized in that: Both the first and second clamp handles have anti-slip textures on their gripping parts.

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