Device capable of lifting and restoring bone flap in bone surgery
By using a combination of threaded titanium alloy sleeves and fixed titanium plates in orthopedic surgery, the problems of unstable fixation and increased intraosseous pressure after surgery in traditional bone fixation systems have been solved, achieving stable bone flap reduction and decompression, and avoiding the risk of secondary surgery.
Patent Information
- Application Number
- CN202422769591.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-11-14
AI Technical Summary
Traditional bone fixation systems have problems such as increased intraosseous pressure, unstable fixation, and inability to decompress during bone reduction and fixation, and may lead to the risk of secondary surgery.
A device for raising, lowering, and retracting bone flaps in orthopedic surgery is employed. It utilizes a combination structure of a threaded titanium alloy sleeve, a fixed titanium plate, and titanium screws. The bone flap is raised or lowered by adjusting the rotation of the first titanium screw, achieving a breakthrough in the existing technical field, as shown in Figure 1.
This method achieves stable fixation of the bone flap and reduces postoperative intraosseous pressure without the need for a second surgery, providing a new fixation method and enhancing the stability and rehabilitation effect after bone reduction.
Smart Images
Figure CN223627647U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of bone fixation and repair technology, in particular to a device capable of lifting and returning bone flap in bone surgery. BACKGROUND
[0002] In the field of bone fixation and repair, including neurosurgery, maxillofacial surgery, thoracic surgery, orthopedics, etc., such as bone surgery, it involves the postoperative bone return and fixation problem. The original bone connection mainly relies on silk line fixation, and gradually appears the bone lock fixation and body plate fixation mode, that is, two metal discs are applied to lock the fractured bone from the inside and outside, which plays a fixing role, but this mode has the risk of postoperative epidural hematoma, and the patient's movement and other activities are inconvenient. Later, bone fixation adopts the bone connecting piece fixation mode, that is, the free bone and the surrounding bone edge are fixed by bone nails and bone connecting pieces outside the bone, which mainly needs to apply a hand screwdriver to fix at least two connecting pieces with screw nails behind the free bone, return the bone, and then apply the hand screwdriver to fix the other end of the connecting piece on the surrounding bone edge. After decades of development, the current main mode is still the application of titanium alloy bone connecting piece and the application of screw nail to fix it inside the bone tissue. For example, some patients with bone defects will take a bone from the patient's body that does not affect the activity, and when treating the lower jawbone of a patient, the doctor takes the fibula from the patient's lower leg to use as a lower jawbone filling material. However, the use of the above-mentioned technology to return the fibula cannot achieve one-time recovery after operation, so there is an urgent need for a method and device that can return once to prevent the risk of secondary surgery.
[0003] In summary, the traditional bone fixation system can only simply return and fix the fractured bone, and since there is no third option, the operator often fixes a single function metal sheet to ensure patient safety. During the patient's bone recovery process, the internal bone tissue may be affected by external factors, which will affect the prognosis. Although the traditional fixation method completely retains the original bone shape, when the internal bone is inflamed, waterlogged, etc., the traditional method cannot achieve the purpose of decompression. Therefore, it is necessary to improve the return and fixation method on the basis of the original. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a device and method capable of lifting and returning bone flap in bone surgery, which can completely replace the traditional simple fixation device, reduce the internal bone pressure after operation, and stabilize the internal bone structure without secondary surgery.
[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:
[0006] The device for lifting and returning bone flap in bone surgery includes a bone fixer and a bone flap to be returned, and the bone flap is fixed on the original bone through the bone fixer; the bone fixer includes a first titanium nail, a fixed titanium plate, a threaded titanium alloy sleeve and a second titanium nail; wherein: the fixed titanium plate is an X-shaped titanium plate with holes in four corners, and the inside and outside of the threaded titanium alloy sleeve (103) are provided with threads; one end of the fixed titanium plate is fixed on the bone flap through two second titanium nails; the other end of the fixed titanium plate is fixed on the edge of the original bone through two first titanium nails, specifically: the first titanium nail (101) passes through the corresponding hole in the end of the fixed titanium plate (102) and is connected with the inner thread of the threaded titanium alloy sleeve (103), and the threaded titanium alloy sleeve is fixed on the edge of the original bone (300) through the outer thread.
[0007] Further, when the fixed titanium plate is fixed on the bone flap, the second titanium nail is fixed in the corresponding screw hole opened at the edge of the bone flap after passing through the corresponding hole in the end of the fixed titanium plate.
[0008] Further, the height of the threaded titanium alloy sleeve is 5 mm, the inner diameter is 2 mm, the outer diameter is 4 mm, the inside and outside are provided with threads, and the inner threads and the outer threads are reverse.
[0009] Further, the device further includes a limiting buckle and a spring fixing piece, the limiting buckle is sleeved on the threaded column of the first titanium nail and the second titanium nail and located between the threaded top and the nail head, and is preferably arranged at 1.5 mm below the nail head; the spring fixing piece is an annular sheet structure with an inner diameter of 0.5 mm and an outer diameter of 1 mm.
[0010] Further, when the fixed titanium plate is fixed on the bone flap, the second titanium nail passes through the fixed titanium plate and the spring fixing piece in sequence and is then fixed on the bone flap, and after being fixed, the limiting buckle is located between the nail head of the second titanium nail and the fixed titanium plate, and the spring fixing piece is located between the fixed titanium plate and the bone flap.
[0011] Further, when the fixed titanium plate is fixed on the edge of the original bone, the first titanium nail is screwed into the threaded titanium alloy sleeve through the fixed titanium plate and the spring fixing piece in sequence, and the threaded titanium alloy sleeve is fixed on the edge of the original bone through the outer thread; after being fixed, the limiting buckle is located between the nail head of the first titanium nail and the fixed titanium plate, and the spring fixing piece is located between the fixed titanium plate and the threaded titanium alloy sleeve.
[0012] Further, the number of the bone fixer is 3, and the bone fixer is installed according to the midline positioning; the length of the first titanium nail and the second titanium nail is 10 mm, and the radius is 1 mm; the length of the fixed titanium plate is 20 mm, the width is 15 mm, and the thickness is 1.5 mm; the four corners of the fixed titanium plate are provided with circular through holes with a radius of 1 mm for the first titanium nail and the second titanium nail to pass through.
[0013] Further, when the first titanium nail is screwed into the threaded titanium alloy sleeve, the lifting or lowering of the bone flap is controlled by rotating the first titanium nail clockwise or counterclockwise; the cooperation of the limiting buckle on both sides of the titanium plate and the spring fixing plate ensures smooth lifting or lowering of the bone flap; the lifting displacement of the bone flap can be up to 5 mm, and the lowering displacement does not exceed the lowest point of the device.
[0014] Further, the threaded titanium alloy sleeve is provided with a 5mm limit to prevent the first titanium nail from falling off due to excessive tightening force and excessive rotation stroke.
[0015] The design principle and beneficial effects of the utility model are as follows
[0016] 1. The device and method for lifting and returning the bone flap in orthopedic surgery solve the problem that the traditional bone fixation system cannot reduce pressure, and the strength of the device is stronger than that of the traditional nail plate fixation system and the bone lock system, ensuring the stability of the returned bone.
[0017] 2. The device has fixing stability: the traditional nail sheet system is a three-point fixed single titanium sheet mode, and the utility model is a four-point fixed mode, each device is fixed to the bone flap side and the original bone side to be more stable.
[0018] 3. The device has adjustable lifting function, which can effectively reduce the damage caused by the increase of intraosseous pressure after operation and strengthen the postoperative rehabilitation effect.
[0019] 4. For patients with mild to moderate swelling after operation, the device can be raised by about 6mm, which can completely achieve the purpose of reducing pressure, and the traditional bone fracture treatment method can be replaced by the utility model to ensure the operation effect.
[0020] 5. The device has simple structure and controllable cost, which is beneficial to practical application and promotion. DRAWINGS
[0021] Figure 1 It is a schematic view of the device for lifting and returning the bone flap in orthopedic surgery after installation.
[0022] Figure 2 It is a structural schematic view of the device for lifting and returning the bone flap in orthopedic surgery.
[0023] Figure 3 It is a structure diagram of the titanium nail in the device.
[0024] Figure 4 It is a structure diagram of the titanium nail in the device.
[0025] Figure 5 This is a structural diagram of the threaded titanium alloy sleeve in the device of this utility model.
[0026] Figure 6 This is a structural diagram of the retaining spring fixing piece in the device of this utility model.
[0027] In the diagram: 100-bone fixator; 101-titanium nail; 102-fixation titanium plate; 103-threaded titanium alloy sleeve; 104-second titanium nail; 105-clasp fixation piece; 106-limiting buckle; 200-bone flap; 300-original bone. Detailed Implementation
[0028] To further understand this utility model, it will be described in detail below.
[0029] This invention provides a device for raising, lowering, and repositioning bone flaps during orthopedic surgery, such as... Figure 1 As shown. The device includes a bone fixator 100 and a bone flap 200 to be returned. The bone flap 200 is returned to the original bone 300 through the bone fixator 100. Preferably, there are 3 bone fixators 100. The bone fixators are installed along the midline. If the gap is large, the number of bone fixators needs to be increased according to the actual situation of the patient.
[0030] like Figure 2 As shown, the bone fixation device 100 includes a first titanium nail 101, a fixing titanium plate 102, a threaded titanium alloy sleeve 103, a second titanium nail 104, a limiting buckle 106, and a retaining spring fixing piece 105.
[0031] like Figure 3 As shown, the first titanium nail 101 and the second titanium nail 104 are 10 mm long and 1 mm in radius; the limiting buckle 106 is sleeved on the stud of the first titanium nail 101 and the second titanium nail 104 and is located between the top of the thread and the nail head, preferably 1.5 mm below the nail head.
[0032] like Figure 4 As shown, the fixing titanium plate 102 is an X-shaped titanium plate with a length of 20 mm, a width of 15 mm, and a thickness of 1.5 mm. It has circular through holes with a radius of 1 mm at its four corners for the first titanium nail 101 and the second titanium nail 104 to pass through. The material is medical titanium alloy.
[0033] like Figure 5 As shown, the threaded titanium alloy sleeve 103 has a height of 5 mm, an inner diameter of 2 mm, and an outer diameter of 4 mm. It has threads on both the inside and outside, and the internal threads are opposite to the external threads.
[0034] like Figure 6As shown, the clamping spring fixing piece 105 is an annular piece with a 0.5mm inner diameter and a 1mm outer diameter.
[0035] When the bone flap 200 is returned to the original bone 300 by the bone fixator 100, one end of the fixing titanium plate 102 is fixed on the bone flap 200 by two second titanium nails 104, and the other end of the fixing titanium plate 102 is fixed on the edge of the original bone 300 by two first titanium nails 101 and two threaded titanium alloy sleeves 103. The specific process is as follows:
[0036] When the fixing titanium plate 102 is fixed on the bone flap, the second titanium nail 104 is sequentially fixed in the corresponding screw hole at the edge of the bone flap 200 after passing through the corresponding hole in the fixing titanium plate 102 and the clamping spring fixing piece 105. After fixing, the limiting buckle 106 is located between the head of the second titanium nail 104 and the fixing titanium plate 102, and the clamping spring fixing piece 105 is located between the fixing titanium plate 102 and the bone flap 200.
[0037] When the fixing titanium plate 102 is fixed on the edge of the original bone 300, the first titanium nail 101 is sequentially connected with the internal thread of the threaded titanium alloy sleeve 103 (screwed into the threaded titanium alloy sleeve) after passing through the corresponding hole in the end of the fixing titanium plate 102 and the clamping spring fixing piece 105, and the threaded titanium alloy sleeve is fixed in the corresponding screw hole at the edge of the original bone 300 through the external thread; after fixing, the limiting buckle 106 is located between the head of the first titanium nail 101 and the fixing titanium plate 102, and the clamping spring fixing piece 105 is located between the fixing titanium plate 102 and the threaded titanium alloy sleeve 103.
[0038] When the first titanium nail 101 is screwed into the threaded titanium alloy sleeve, the lifting or lowering of the bone flap can be controlled by rotating the first titanium nail 101 clockwise or counterclockwise; the movement of the fixing titanium plate 102 can be limited by the cooperation of the limiting buckle on both sides of the fixing titanium plate 102 and the clamping spring fixing piece 105, thereby ensuring the smooth lifting or lowering of the bone flap 200; the maximum displacement of the lifting of the bone flap 200 is 5mm, and the displacement of the lowering does not exceed the lowest point of the device.
[0039] The threaded titanium alloy sleeve 103 is provided with a 5mm limiting position to prevent the first titanium nail 101 from falling off due to excessive tightening force and excessive rotation stroke.
[0040] When using the above device to lift and lower the bone flap, first, three bone fixators are installed according to the midline positioning, and if the gap is large, the number of bone fixators needs to be increased according to the actual situation of the patient; during installation, the two ends of the fixing titanium plate are fixed on the bone flap and the edge of the original bone respectively, and the bone flap is lifted or lowered by rotating the first titanium nail clockwise or counterclockwise, such as lifting the bone flap 200 by rotating the first titanium nail 101 clockwise, and lowering the bone flap 200 by rotating the first titanium nail 101 counterclockwise.
[0041] The device provides a new means and method for bone reduction and fixation after orthopedic surgery, and provides a new choice between simple complete fixation and complete lifting. For patients who may have increased intramedullary pressure after surgery, the use of the fixing device can effectively solve the problem of increased intramedullary pressure, help control the risk brought by postoperative tissue swelling of the patient, and at the same time, the device has a strength greater than that of a traditional nail plate fixing system and a bone lock system, ensuring the stability of the bone after reduction. The device can realize the lifting of the bone flap side by adjusting the first titanium nail, and can be normally reduced according to the rotation path with a certain tension.
[0042] The system strength of the device is stronger than that of a traditional nail plate fixing system and a bone lock system, ensuring the stability of the bone after reduction. After 3 months of postoperative connective tissue wrapping, there is no difference in effect compared with the existing bone fixing system in the market.
[0043] The above embodiments are only for illustrating the technical concept and characteristics of the utility model, and the purpose is to enable those skilled in the art to understand the content of the utility model and implement it, and it cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the essence of the utility model shall fall within the protection scope of the utility model.
Claims
1. A device for elevating and reducing bone flaps in bone surgery, characterized in that: The device comprises a bone fixator (100) and a bone flap (200) to be returned, the bone flap (200) is fixed on the original bone (300) through the bone fixator (100); the bone fixator (100) comprises a first titanium nail (101), a fixed titanium plate (102), a threaded titanium alloy sleeve (103) and a second titanium nail (104); wherein: the fixed titanium plate (102) is an X-shaped titanium plate with four corner holes, the inside and outside of the threaded titanium alloy sleeve (103) are provided with threads; one end of the fixed titanium plate (102) is fixed on the bone flap (200) through two second titanium nails (104); the other end of the fixed titanium plate (102) is fixed on the edge of the original bone (300) through two first titanium nails (101), specifically: the first titanium nail (101) passes through the corresponding hole in the end of the fixed titanium plate (102) and is connected with the inner thread of the threaded titanium alloy sleeve (103), and the threaded titanium alloy sleeve is fixed on the edge of the original bone (300) through the outer thread.
2. The device as claimed in claim 1, wherein: When the fixed titanium plate (102) is fixed on the bone flap, the second titanium nail (104) is fixed in the corresponding screw hole opened at the edge of the bone flap (200) after passing through the corresponding hole in the end of the fixed titanium plate (102).
3. The device of claim 1, wherein: The height of the threaded titanium alloy sleeve (103) is 5mm, the inner diameter is 2mm, the outer diameter is 4mm, and the internal thread and the external thread are reverse.
4. The device of claim 1, wherein: The device further comprises a limiting buckle (106) and a clasp fixing piece (105), the limiting buckle (106) is sleeved on the threaded column of the first titanium nail (101) and the second titanium nail (104) and located between the threaded top and the nail head, and is arranged at 1.5mm below the nail head; the clasp fixing piece (105) is an annular sheet structure with an inner diameter of 0.5mm and an outer diameter of 1mm.
5. The device of claim 4, wherein: When the fixed titanium plate (102) is fixed on the bone flap, the second titanium nail (104) passes through the fixed titanium plate (102) and the clasp fixing piece (105) in sequence, and then is fixed on the bone flap (200), after being fixed, the limiting buckle (106) is located between the nail head of the second titanium nail (104) and the fixed titanium plate (102), and the clasp fixing piece (105) is located between the fixed titanium plate (102) and the bone flap (200).
6. The device of claim 4, wherein: When the fixed titanium plate (102) is fixed on the edge of the original bone (300), the first titanium nail (101) is screwed into the threaded titanium alloy sleeve through the fixed titanium plate (102) and the clasp fixing piece (105) in sequence, and the threaded titanium alloy sleeve is fixed on the edge of the original bone (300) through the outer thread; after being fixed, the limiting buckle (106) is located between the nail head of the first titanium nail (101) and the fixed titanium plate (102), and the clasp fixing piece (105) is located between the fixed titanium plate (102) and the threaded titanium alloy sleeve (103).
7. The device of claim 1, wherein: The number of the bone fixator (100) is three, which is installed according to the midline positioning; the length of the first titanium nail (101) and the second titanium nail (104) is 10 mm, and the radius is 1 mm; the length of the fixed titanium plate (102) is 20 mm, the width is 15 mm, and the thickness is 1.5 mm; the fixed titanium plate (102) is provided with a circular through hole with a radius of 1 mm at the four corners, which is used for the first titanium nail (101) and the second titanium nail (104) to pass through.
8. The device of claim 1, wherein: When the first titanium nail (101) is screwed into the threaded titanium alloy sleeve, the lifting or lowering of the bone flap is controlled by rotating the first titanium nail (101) clockwise or counterclockwise; the bone flap (200) can be smoothly lifted or lowered by cooperating the limiting buckle on both sides of the fixed titanium plate (102) with the clasp spring fixing piece (105); the bone flap (200) can be lifted by a maximum displacement of 5 mm, and the displacement of the bone flap (200) when it is lowered does not exceed the lowest point of the device.
9. The device of claim 1, wherein: The threaded titanium alloy sleeve (103) is provided with a 5 mm limit to prevent the first titanium nail (101) from falling off due to excessive tightening force and excessive rotation stroke.