Femoral fracture wire binding passage establishing device and establishing method

Abstract

The application discloses a femur fracture steel wire binding channel establishing device and method, which comprises a first guide pipe and a second guide pipe. The first guide pipe is hinged to the second guide pipe through a detachable hinge mechanism. A first hinge mechanism is fixed on the first pipe body, and a second hinge mechanism is fixed on the second pipe body. The second hinge mechanism can be clamped into the first hinge mechanism and rotated on the first hinge mechanism to form a hinge. The femur fracture steel wire binding channel establishing device can be divided into two independent steel wire binding channel establishing guide pipes and inserted to the fracture end separately. A large incision is not needed, and the device is more in line with the requirements of minimally invasive surgery. When the assembly is completed, the steel wire binding channel establishing guide pipe can be closed under the extrusion of the clamp handle, so that a complete steel wire binding channel is quickly established. The whole process does not need to be operated by the fingers of the surgical staff, and the radiation exposure of the surgical staff is reduced.

Description

Technical Field

[0001] This invention relates to the field of orthopedic medical devices, specifically to a device and method for establishing a wire ligation channel for femoral fractures. Background Technology

[0002] Closed reduction and minimally invasive plate fixation (MIPO) or intramedullary nailing techniques require a high level of surgical skill, especially when applied to complex femoral fractures, such as periprosthetic fractures and complex trochanteric fractures. When performing these procedures, simultaneous use of wire cerclage fixation can achieve excellent fracture reduction and fixation.

[0003] Current wire ligation techniques typically require extensive incisions to facilitate fracture reduction. However, this results in a large area of ​​soft tissue dissection, increasing the risk of postoperative infection and nursing costs, and hindering rapid wound healing. Before ligating the wire, a guide suture is inserted through the surgical incision using one hemostat and pulled out through the same incision using another. The ligating wire is then tied to the end of the guide suture, and the ligating wire is wrapped around the fracture site by pulling it with the guide suture. Since the inside of the incision is not visible, aligning the heads of the two hemostats is extremely difficult, often requiring the surgeon to insert their fingers inside the incision for palpation and alignment. During the procedure, a C-arm endoscopic machine is used for positioning, and inserting fingers undoubtedly increases the surgeon's radiation exposure. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a device and method for establishing a wire ligation channel in femoral fractures. The device can be disassembled into two independent wire ligation channel establishment catheters. These two catheters can be inserted into the fracture end from two directions of the surgical incision, eliminating the need for a large incision and better meeting the requirements of minimally invasive surgery. When the two independent wire ligation channel establishment catheters are about to connect, they can be assembled together to form a hinged clamp structure. Upon assembly, the wire ligation channel establishment catheters close under the pressure of the clamp handles, thus quickly establishing a complete wire ligation channel. The entire process does not require the surgeon's fingers, reducing the surgeon's radiation exposure and improving surgical efficiency.

[0005] To achieve the above-mentioned technical effects, the present invention is implemented through the following technical solution:

[0006] A device for establishing a wire ligation channel for femoral fractures includes a first guide tube and a second guide tube. The first guide tube is hinged to the second guide tube via a detachable hinge mechanism. The first guide tube includes a first tube body on which a first hinge mechanism is fixed. The second guide tube includes a second tube body on which a second hinge mechanism is fixed. The second hinge mechanism can be engaged with the first hinge mechanism and rotate on it to form a hinge. A sliding guide tube is provided at the front end of the second guide tube wall, and a knob is provided at the rear end of the second guide tube. The knob is a hollow knob, and a connecting mechanism is provided between the knob and the sliding guide tube. When the knob is rotated in the forward direction, the sliding guide tube slides out from the front end of the second guide tube, and when the knob is rotated in the reverse direction, the sliding guide tube slides into the second guide tube.

[0007] Furthermore, the connecting mechanism includes a connecting flexible steel pipe, the ends of which are fixedly connected to the sliding guide pipe by rivets. The rear end of the connecting flexible steel pipe is a threaded pipe section, and the front end of the threaded pipe section is a limiting sliding pipe section with a limiting groove. The inner wall of the second guide pipe corresponding to the second hinge mechanism is provided with a limiting protrusion, which is engaged in the limiting groove. A threaded sleeve is fixedly connected to the knob, and the threaded sleeve is inserted into the second pipe body. The threaded pipe section is inserted into the threaded sleeve and threadedly connected to the threaded sleeve. When the knob is rotated in the forward direction, the limiting sliding pipe section of the connecting flexible steel pipe slides towards the front end along the second pipe body under the limiting action of the limiting protrusion. The sliding guide pipe slides out of the second pipe body under the push of the connecting flexible steel pipe. When the knob is rotated in the reverse direction, the sliding guide pipe slides into the second pipe body.

[0008] Furthermore, the first hinge mechanism divides the first tube body into a first insertion tube segment and a first handle tube segment, and the second hinge mechanism divides the second tube body into a second insertion tube segment and a second handle tube segment, wherein the arc of the sliding guide tube is consistent with that of the second insertion tube segment.

[0009] Furthermore, both the first and second insertion tube segments are 1 / 4 arc tubes. After the sliding guide tube is fully slid out, it forms a 1 / 2 arc tube with the second insertion tube segment. The sliding guide tube can be inserted into the first insertion tube segment. When the first and second insertion tube segments are closed, they form a semi-circle.

[0010] Furthermore, the first hinge mechanism includes a hinge seat, a hinge post fixed on the hinge seat, and a limit stop plate fixed at the end of the hinge post. The second hinge mechanism includes a locking plate with a rotating groove. One side of the rotating groove is a hook, and the other side of the rotating groove is a guide protrusion. The hinge post of the first hinge mechanism can be engaged in the rotating groove of the second hinge mechanism, and the limit stop plate abuts against the top of the rotating groove.

[0011] Furthermore, the first guide tube, the second guide tube, and the detachable hinge mechanism are all made of stainless steel.

[0012] The method for establishing a wire ligation channel in a femoral fracture includes the following steps:

[0013] S1. Make surgical incisions on the anterior and posterior sides of the distal end of the fracture.

[0014] S2. The second tube is inserted through the anterior surgical incision at the distal end of the fracture and insertion is stopped when it reaches the area near the fracture.

[0015] S3. Rotate the knob clockwise until the sliding guide tube slides out completely from the second tube to form a 1 / 2 circle.

[0016] S4. Observe the position of the sliding guide tube, insert the first tube through the posterior surgical incision at the distal end of the fracture, and fit the front end of the first tube into the sliding guide tube until the sliding guide tube is completely inserted into the second tube. At this time, the first tube and the second tube are connected.

[0017] S5. Insert the second hinge structure into the first hinge, at which point the ports of the first tube and the second tube are adaptively aligned.

[0018] S6. Pinch the first tube and the second tube together so that the second tube fits into the first tube. At this point, the femoral fracture wire ligation channel is established.

[0019] S7. Insert the binding wire from the tail of the second tube, and let the binding wire travel along the femoral fracture binding wire channel and pass through the tail of the first tube.

[0020] S8. Disassemble the first tube and the second tube from the detachable hinge mechanism, remove the first tube and the second tube respectively, and bend and cut the binding wire.

[0021] The beneficial effects of this invention are as follows: the femoral fracture wire ligation channel establishment device can be disassembled into two independent wire ligation channel establishment catheters. The two independent wire ligation channel establishment catheters can be inserted into the fracture end from two directions of the surgical incision, respectively, without the need for a large incision, which is more in line with the requirements of minimally invasive surgery. When the two independent wire ligation channel establishment catheters are about to be connected, they can be assembled together to form a hinged clamp structure. When the assembly is completed, the wire ligation channel establishment catheters can be closed under the pressure of the clamp handle, thereby quickly establishing a complete wire ligation channel. The whole process does not require the surgeon's fingers to operate, reducing the surgeon's radiation exposure and improving the efficiency of the operation. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the assembled structure of the femoral fracture wire ligation channel establishment device;

[0024] Figure 2 This is a schematic diagram of the first guide tube;

[0025] Figure 3 This is a schematic diagram of the structure of the second guide tube;

[0026] Figure 4 A schematic diagram of the structure of the second guide tube;

[0027] Figure 5 This is a schematic diagram of the state changes of the second guide tube.

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 1-First guide tube, 2-Second guide tube, 3-Detachable hinge mechanism, 4-First insertion tube section, 5-First handle tube section, 6-Second insertion tube section, 7-Second handle tube section, 8-First hinge mechanism, 9-Hinge post, 10-Limiting baffle, 11-Clamping plate, 12-Guide protrusion, 13-Hook, 14-Rotating groove, 15-Sliding guide tube, 16-Connecting soft steel pipe, 17-Rivet, 18-Limiting groove, 19-Threaded tube section, 20-Threaded sleeve, 21-Knob. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] like Figure 1As shown, the femoral fracture wire ligation channel establishment device includes a first guide tube 1 and a second guide tube 2. The first guide tube, the second guide tube, and the detachable hinge mechanism are all made of stainless steel. The first guide tube 1 is hinged to the second guide tube 2 via the detachable hinge mechanism 3. The first guide tube 1 includes a first tube body, on which the first hinge mechanism is fixed. The second guide tube 2 includes a second tube body, on which the second hinge mechanism is fixed. The second hinge mechanism can be engaged with the first hinge mechanism and rotate on it to form a hinge. A sliding guide tube is provided at the front end of the second guide tube wall, and a knob 21 is provided at the rear end of the second guide tube. The knob is a hollow knob, and a connecting mechanism is provided between the knob and the sliding guide tube. When the knob is rotated forward, the sliding guide tube slides out from the front end of the second guide tube; when the knob is rotated in the reverse direction, the sliding guide tube slides into the second guide tube.

[0032] like Figure 2 As shown, the first hinge mechanism includes a hinge seat 8 and a hinge post 9 fixed on the hinge seat. A limit stop 10 is fixed to the end of the hinge post 9. The second hinge mechanism includes a locking plate 11 with a rotating groove. One side of the rotating groove is a hook 13, and the other side of the rotating groove is provided with a guide protrusion 12. The hinge post of the first hinge mechanism can be locked into the rotating groove 14 of the second hinge mechanism, and the limit stop abuts against the top of the rotating groove.

[0033] The first hinge mechanism divides the first tube body into a first insertion tube segment 4 and a first handle tube segment 5, and the second hinge mechanism divides the second tube body into a second insertion tube segment 6 and a second handle tube segment 7. The sliding guide tube has the same curvature as the second insertion tube segment.

[0034] like Figure 3-5 As shown, the connecting mechanism includes a connecting flexible steel pipe 16. The ends of the connecting flexible steel pipe 16 and the sliding guide pipe 15 are fixedly connected by rivets 17. The rear end of the connecting flexible steel pipe 16 is a threaded pipe section 19, and the front end of the threaded pipe section 19 is a limiting sliding pipe section. The limiting sliding pipe section is provided with a limiting groove 18. The inner wall of the second guide pipe corresponding to the second hinge mechanism is provided with a limiting protrusion. The limiting protrusion is inserted into the limiting groove 18. A threaded sleeve 20 is fixedly connected to the knob. The threaded sleeve 20 is inserted into the second pipe body. The threaded pipe section 19 is inserted into the threaded sleeve 20 and threadedly connected to the threaded sleeve. When the knob is rotated in the forward direction, the limiting sliding pipe section of the connecting flexible steel pipe 16 slides towards the front end along the second pipe body under the limiting action of the limiting protrusion. The sliding guide pipe 15 slides out of the second pipe body under the push of the connecting flexible steel pipe 16. When the knob is rotated in the reverse direction, the sliding guide pipe 15 slides into the second pipe body.

[0035] In this embodiment, both the first insertion tube segment 4 and the second insertion tube segment 6 are 1 / 4 arc tubes, and the first insertion tube segment 4 and the second insertion tube segment 6 form a semi-circle when closed.

[0036] Since both the first hinge mechanism and the second hinge mechanism have a certain thickness, in order to ensure that the ends of the first insertion tube section 4 and the second insertion tube section 6 can fit together, the first insertion tube section 4 bends outward perpendicular to the first hinge mechanism, and the second insertion tube section 6 should bend inward perpendicular to the second hinge mechanism.

[0037] In this embodiment, the method for establishing a wire ligation channel for femoral fracture includes the following steps:

[0038] S1. Make surgical incisions on the anterior and posterior sides of the distal end of the fracture.

[0039] S2. The second tube is inserted through the anterior surgical incision at the distal end of the fracture and insertion is stopped when it reaches the area near the fracture.

[0040] S3. Rotate the knob clockwise until the sliding guide tube slides out completely from the second tube to form a 1 / 2 circle;

[0041] S4. Observe the position of the sliding guide tube, insert the first tube through the posterior surgical incision at the distal end of the fracture, and fit the front end of the first tube into the sliding guide tube until the sliding guide tube is completely inserted into the second tube. At this time, the first tube and the second tube are connected.

[0042] S5. Insert the second hinge structure into the first hinge, at which point the ports of the first tube and the second tube are adaptively aligned.

[0043] S6. Pinch the first tube and the second tube together so that the second tube fits into the first tube. At this point, the femoral fracture wire ligation channel is established.

[0044] S7. Insert the binding wire from the tail of the second tube, and let the binding wire travel along the femoral fracture binding wire channel and pass through the tail of the first tube.

[0045] S8. Disassemble the first tube and the second tube from the detachable hinge mechanism, remove the first tube and the second tube respectively, and bend and cut the binding wire.

[0046] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A device for establishing a channel for wire ligation in femoral fractures, characterized in that, The device includes a first guide tube and a second guide tube. The first guide tube is hinged to the second guide tube via a detachable hinge mechanism. The first guide tube includes a first tube body, on which a first hinge mechanism is fixed. The second guide tube includes a second tube body, on which a second hinge mechanism is fixed. The second hinge mechanism can be engaged with the first hinge mechanism and rotate on the first hinge mechanism to form a hinge. The front end of the second guide tube wall is provided with a sliding guide tube, and the rear end of the second guide tube is provided with a knob. The knob is a hollow knob. A connecting mechanism is provided between the knob and the sliding guide tube. When the knob is rotated in the forward direction, the sliding guide tube slides out from the front end of the second guide tube. When the knob is rotated in the reverse direction, the sliding guide tube slides into the second guide tube. The first hinge mechanism divides the first tube body into a first insertion tube segment and a first handle tube segment, and the second hinge mechanism divides the second tube body into a second insertion tube segment and a second handle tube segment. The sliding guide tube has the same curvature as the second insertion tube segment. Both the first and second insertion tube segments are 1 / 4 circular arc tubes. After the sliding guide tube is fully slid out, it forms a 1 / 2 circular arc tube with the second insertion tube segment. The sliding guide tube can be inserted into the first insertion tube segment. When the first and second insertion tube segments are closed, they form a semi-circle.

2. The femoral fracture wire ligation channel establishment device according to claim 1, characterized in that, The connecting mechanism includes a connecting flexible steel pipe, the ends of which are fixedly connected to the sliding guide pipe by rivets. The rear end of the connecting flexible steel pipe is a threaded pipe section, and the front end of the threaded pipe section is a limiting sliding pipe section with a limiting groove. The inner wall of the second guide pipe corresponding to the second hinge mechanism is provided with a limiting protrusion that engages in the limiting groove. A threaded sleeve is fixedly connected to the knob and inserted into the second pipe body. The threaded pipe section is inserted into the threaded sleeve and threadedly connected to it. When the knob is rotated in the forward direction, the limiting sliding pipe section of the connecting flexible steel pipe slides towards the front end along the second pipe body under the limiting action of the limiting protrusion. The sliding guide pipe slides out of the second pipe body under the push of the connecting flexible steel pipe. When the knob is rotated in the reverse direction, the sliding guide pipe slides into the second pipe body.

3. The femoral fracture wire ligation channel establishment device according to claim 1, characterized in that, The first hinge mechanism includes a hinge seat and a hinge post fixed on the hinge seat. A limit stop is fixed at the end of the hinge post. The second hinge mechanism includes a locking plate with a rotating groove. One side of the rotating groove is a hook, and the other side of the rotating groove is a guide protrusion. The hinge post of the first hinge mechanism can be locked into the rotating groove of the second hinge mechanism, and the limit stop abuts against the top of the rotating groove.

4. The femoral fracture wire ligation channel establishment device according to any one of claims 1-3, characterized in that, The first guide tube, the second guide tube, and the detachable hinge mechanism are all made of stainless steel.

5. The femoral fracture wire ligation channel establishment device according to claim 4, wherein the method of using the device comprises the following steps: S1. Make surgical incisions on the anterior and posterior sides of the distal end of the fracture. S2. The second tube is inserted through the anterior surgical incision at the distal end of the fracture and insertion is stopped when it reaches the area near the fracture. S3. Rotate the knob clockwise until the sliding guide tube slides out completely from the second tube to form a 1 / 2 circle. S4. Observe the position of the sliding guide tube, insert the first tube through the posterior surgical incision at the distal end of the fracture, and fit the front end of the first tube into the sliding guide tube until the sliding guide tube is completely inserted into the second tube. At this time, the first tube and the second tube are connected. S5. Insert the second hinge structure into the first hinge, at which point the ports of the first tube and the second tube are adaptively aligned. S6. Pinch the first tube and the second tube together so that the second tube fits into the first tube. At this point, the femoral fracture wire ligation channel is established. S7. Insert the binding wire from the tail of the second tube, and let the binding wire travel along the femoral fracture binding wire channel and pass through the tail of the first tube. S8. Disassemble the first tube and the second tube from the detachable hinge mechanism, remove the first tube and the second tube respectively, and bend and cut the binding wire.

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