Femoral fracture repositor
By designing a resetner used for femoral fracture surgery, using the sliding and rotating mechanism of the sliding core and screws to combine the principle of leverage to achieve the reset of the fracture end and reduce the exposure of X -ray. Time is exposed to the problem of the X -ray machine.
Patent Information
- Application Number
- CN202420888416.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-04-26
Smart Images
Figure CN222398707U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of orthopedic surgical instruments, in particular to a femoral fracture reducer. Background Art
[0002] Femoral shaft fractures and distal femoral fractures are common clinical fractures. Surgical treatment is the first choice for treatment, including intramedullary nail fixation and plate fixation. Due to the strong strength of thigh muscles such as the quadriceps femoris, patients with femoral fractures often have shortening deformities due to muscle traction, which makes it difficult to reduce, restore and effectively maintain the length of the femur during surgery. If anatomical reduction cannot be achieved during surgery, complications such as malformation and poor alignment of the lower limbs may occur after surgery. In the relevant literature, Winquist et al. reported that 520 cases of femoral shaft fractures were treated with intramedullary nails, and 8% of the patients had external rotation deformities of more than 10 degrees. Yang et al. reported that 4 of the 42 patients (9.5%) had rotational deformities of more than 15 degrees. Braten et al. measured the anteversion angles of the bilateral femurs in 110 patients with unilateral femoral shaft fractures treated with interlocking intramedullary nails, and 21 patients (19%) had rotational deformities (the difference in the anteversion angles of the bilateral femurs exceeded 15 degrees). Complications such as poor alignment and malunion of the lower limbs after femoral fracture surgery may lead to traumatic arthritis or osteoarthritis. Seriously affects the patient's limb function and quality of life. Intraoperative traction is an important means to reduce femoral fractures and restore the length of lower limbs.
[0003] When a femoral bone is dislocated and fractured, the existing method is generally to use a expander to expand and pressurize the two dislocated parts of the bone, stretch the muscles, tendons and ligaments to make the dislocated fracture site docked and anastomosed. However, realignment requires the orthopedist to pull and traction to correct the displacement and angle. At this time, the correction process needs to rely on an X-ray machine for real-time monitoring to ensure that the dislocated fracture is completely aligned. However, this method of pulling and traction by the orthopedist is time-consuming and labor-intensive, and will cause the orthopedist's hands to be exposed to the X-ray machine for a long time, which will cause physical damage to doctors who do bonesetting for a long time. Based on this, a femoral fracture reducer is proposed. Utility Model Content
[0004] The utility model aims to provide a femoral fracture reducer to solve the problem that the hands of an orthopedic surgeon are exposed to the irradiation of an X-ray machine for a long time.
[0005] In order to achieve the above object, the utility model provides the following technical solutions:
[0006] A femoral fracture reducer comprises a sleeve, a sliding core, a fixing pin and a handle, wherein the interior of the sleeve is a hollow chamber, a notch is provided on one side of the sleeve, two sliding cores are sleeved in the hollow chamber inside the sleeve, the sliding core can slide relative to the hollow chamber, a connecting base is provided on the sliding core, the connecting base passes through the notch on one side of the sleeve, the connecting base is connected to the fixing pin, a connecting tube is provided on the side of the sleeve away from the notch, and the connecting tube is connected to the handle.
[0007] Furthermore, the sliding core slides relative to the hollow chamber through a screw rod, the screw rod is arranged at one end of the sleeve through a bearing and can rotate relative to the sleeve, the screw rod and the sliding core slide through internal and external threads, and a rotary handle is arranged at one end of the screw rod close to the outer end surface of the sleeve.
[0008] Furthermore, the two sliding cores slide relative to the hollow chamber through screw rods respectively arranged at two ends of the sleeve.
[0009] Furthermore, the fixing needle is connected to the connecting base via a thread.
[0010] Furthermore, the handle is connected to the connecting tube via a thread.
[0011] Furthermore, the handle is provided with an anti-slip knurling pattern.
[0012] Compared with the prior art, the utility model has the following beneficial effects:
[0013] 1. The sliding core can slide relative to the sleeve, thereby changing the distance between the two fixing pins, which helps the orthopedic surgeon to restore the patient's femur length.
[0014] 2. The handle is set on the sleeve and connected to the connecting tube through a thread. The lever principle is used in the minimally invasive treatment of femoral fractures to pry and reset the distal and proximal fracture ends. Compared with traditional reduction techniques, the femoral fracture reduction process is more labor-saving and time-saving, and can significantly reduce the radiation exposure time of patients and medical staff. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is an overall schematic diagram of a femoral fracture reducer;
[0016] Figure 2 A schematic diagram of a femoral fracture reducer sleeve;
[0017] Figure 3 The present invention is a schematic diagram of a sliding core of a femoral fracture reducer.
[0018] The reference numerals in the drawings of the specification include:
[0019] 1. Sleeve; 101. Hollow chamber; 102. Notch; 103. Connecting tube; 2. Sliding core; 201. Connecting base; 3. Fixing needle; 4. Handle; 401. Anti-slip knurling pattern; 5. Screw rod; 6. Bearing; 7. Rotary handle. DETAILED DESCRIPTION
[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and implementation examples:
[0021] like Figure 1-3 As shown, a femoral fracture reducer includes a sleeve 1, a sliding core 2, a fixing pin 3 and a handle 4. The interior of the sleeve 1 is a hollow chamber 101, and a slot 102 is provided on one side of the sleeve 1. Two sliding cores 2 are sleeved in the hollow chamber 101 inside the sleeve 1. The sliding core 2 can slide relative to the hollow chamber 101. A connecting base 201 is provided on the sliding core 2. The connecting base 201 passes through the slot 102 on one side of the sleeve 1. The connecting base 201 is connected to the fixing pin 3. A connecting tube 103 is provided on the side of the sleeve 1 away from the slot 102, and the connecting tube 103 is connected to the handle 4.
[0022] In a specific embodiment, the sliding core 2 slides relative to the hollow chamber 101 through the screw rod 5. The screw rod 5 is set at one end of the sleeve 1 through the bearing 6 and can rotate relative to the sleeve 1. The screw rod 5 and the sliding core 2 slide through the internal and external threads. A rotary handle 7 is set at one end of the screw rod 5 close to the outer end surface of the sleeve 1.
[0023] In a specific embodiment, the two sliding cores 2 slide relative to the hollow chamber 101 through screw rods 5 respectively arranged at two ends of the sleeve 1.
[0024] In a specific embodiment, the fixing needle 3 is connected to the connecting base 201 through a thread.
[0025] In a specific embodiment, the handle 4 is connected to the connecting tube 103 via threads.
[0026] In a specific embodiment, the handle 4 is provided with an anti-slip knurling pattern 401 .
[0027] The specific implementation process is as follows:
[0028] Fix the fixing pin 3 at the distal and proximal ends of the fracture, connect the fixing pin 3 to the connecting base 201 on the sliding core 2, drive the screw rod 5 to rotate through the rotary handle 7 set at both ends of the sleeve 1, make the sliding core 2 slide relative to the sleeve 1, and then change the distance between the two fixing pins 3, which helps the osteopath to restore the femur length of the patient, fix the handle 4 on the connecting rod through the threaded column, and use the lever principle in the minimally invasive treatment of femoral fracture to pry and reset the distal and proximal fracture ends. Compared with the traditional reduction method, it is more labor-saving and time-saving in the process of femoral fracture reduction, and can significantly reduce the radiation exposure time of patients and medical staff. The anti-skid knurling pattern 401 set on the handle 4 can effectively prevent slipping. The utility model has a simple structure and significant effect, and is worthy of popularization and use.
[0029] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. A femoral fracture reducer, characterized in that: The invention comprises a sleeve (1), a sliding core (2), a fixing needle (3) and a handle (4); the interior of the sleeve (1) is a hollow chamber (101); a notch (102) is provided on one side of the sleeve (1); two sliding cores (2) are sleeved in the hollow chamber (101) inside the sleeve (1); the sliding cores (2) can slide relative to the hollow chamber (101); a connecting base (201) is provided on the sliding core (2); the connecting base (201) passes through the notch (102) on one side of the sleeve (1); the connecting base (201) is connected to the fixing needle (3); a connecting tube (103) is provided on the side of the sleeve (1) away from the notch (102); the connecting tube (103) is connected to the handle (4).
2. A femoral fracture reducer according to claim 1, characterized in that: The sliding core (2) slides relative to the hollow chamber (101) via a screw rod (5); the screw rod (5) is arranged at one end of the sleeve (1) via a bearing (6) and can rotate relative to the sleeve (1); the screw rod (5) and the sliding core (2) slide in cooperation via internal and external threads; a rotary handle (7) is arranged at one end of the screw rod (5) close to the outer end surface of the sleeve (1).
3. A femoral fracture reducer according to claim 2, characterized in that: The two sliding cores (2) slide relative to the hollow chamber (101) via screw rods (5) respectively arranged at two ends of the sleeve (1).
4. A femoral fracture reducer according to claim 1, characterized in that: The fixing needle (3) is connected to the connecting base (201) via a thread.
5. A femoral fracture reducer according to claim 1, characterized in that: The handle (4) is connected to the connecting tube (103) via threads.
6. A femoral fracture reducer according to claim 1, characterized in that: The handle (4) is provided with an anti-slip knurling pattern (401).