Fracture fixing frame
By designing a locking and fine-tuning mechanism, the problem of difficulty in fine-tuning minimally invasive fixation frames was solved, achieving precise alignment and locking of the fixation needles, enhancing the fixation effect, and providing auxiliary treatment functions.
Patent Information
- Application Number
- CN202422422539.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-08
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-10-08
AI Technical Summary
Existing minimally invasive fixation devices are difficult to fine-tune and correct during the fixation process, which affects the fixation effect.
A fracture fixation frame was designed to achieve precise alignment and effective fixation of minimally invasive fixation pins through the cooperation of a locking mechanism and a fine-tuning mechanism. The frame includes components such as a sleeve, locking bolt, rubber ring, ball head, and movable plate, which work together to achieve fine-tuning and locking.
It achieves precise alignment and effective fixation of the minimally invasive fixation needle, enhances the fixation effect, and provides auxiliary treatment through the electrotherapy component.
Smart Images
Figure CN223715795U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to orthopedic instrument technical field, especially a kind of fracture fixation frame. BACKGROUND
[0002] Fracture fixation is an important link in orthopedic treatment, and the purpose is to promote the healing of bone by stabilizing the fracture site. At present, minimally invasive fixation technology gradually gets wide application in clinic due to its advantages of small trauma, rapid recovery and few complications. Minimally invasive fixation needle is a common minimally invasive fixation tool, which stabilizes the fracture site by puncturing into the fixation needle at the fracture site.
[0003] The existing minimally invasive fixation technology usually includes puncturing two minimally invasive fixation needles at the fracture site, and then connecting the two minimally invasive fixation needles together using a fixation frame to ensure the stability of the fracture site. These fixation frames and two minimally invasive fixation needles have four connection points, and each connection point needs to be accurately aligned and firmly fixed. However, in actual operation, the design of the traditional fixation frame is relatively rigid, and lacks an effective fine-tuning mechanism, making it difficult to fine-tune and correct during the fixation process, which affects the fixation effect of the minimally invasive fixation needle. SUMMARY
[0004] To solve the problem that the existing fixation frame cannot be fine-tuned and locked, the utility model provides a fracture fixation frame, which realizes accurate alignment and effective fixation of the minimally invasive fixation needle through the cooperation of the locking mechanism and the fine-tuning mechanism.
[0005] The utility model provides a kind of fracture fixation frame, including the shell worn on the extremity and two root minimally invasive fixation needle respectively from the upper and lower ends of shell, shell upper end is equipped with first hole group, shell lower end is equipped with second hole group, form four needle holes, first hole group and second hole group place are all provided with the locking mechanism for the limiting of minimally invasive fixation needle, the locking mechanism place of second hole group is also equipped with the fine-tuning mechanism for the adjustment of minimally invasive fixation needle, minimally invasive fixation needle passes through locking mechanism and fine-tuning mechanism. Through the cooperation of the locking mechanism and the fine-tuning mechanism, the fine-tuning and fixation of the minimally invasive fixation needle are realized to realize accurate alignment.
[0006] Further, the locking mechanism includes a sleeve and a locking bolt, the sleeve has an opening, the inner wall of the opening is provided with an internal thread matched with the locking bolt, and the minimally invasive fixation needle is fixed in the sleeve by the locking bolt. Tightening the locking bolt realizes the locking of the minimally invasive fixation needle.
[0007] Further, the sleeve is also provided with a rubber ring, the rubber ring is filled between the sleeve and the locking bolt, and the rubber ring is sealed in the sleeve by the locking bolt. The minimally invasive fixation needle penetrates the rubber ring, and when the locking bolt is screwed into the sleeve, the rubber ring is extruded to fill the position between the minimally invasive fixation needle and the sleeve, so as to lock the minimally invasive fixation needle.
[0008] Further, the fine adjustment mechanism comprises a ball head, a spherical cavity capable of accommodating the ball head is arranged in the needle passing hole of the second hole group, a through hole through which the minimally invasive fixation needle passes is further arranged on the ball head, and the minimally invasive fixation needle rotates around the needle passing hole through the ball head.
[0009] Further, the movable plate and a locking screw are further arranged at one needle passing hole of the second hole group, the movable plate is connected with the shell through the locking screw on the upper portion of the movable plate, the spherical cavity provided with the ball head is arranged on the lower portion of the movable plate, the end portion of the sleeve corresponding to the spherical cavity is provided with a locking surface matched with the ball head, and the shell is further provided with an avoiding window through which the minimally invasive fixation needle rotates.
[0010] Further, the shell comprises a metal shell and a protective inner shell, the metal shell is provided with a sliding groove through which the movable plate longitudinally displaces, the end portion of the locking screw is provided with a connecting block movably assembled in the sliding groove, and the movable plate is screwed with the connecting block through the locking screw.
[0011] Further, the shell is semicircular, the shell is composed of a left shell and a right shell, and the connecting seat and the connecting screw are arranged on the splicing surface of the left shell and the right shell.
[0012] Further, the shell is provided with an empty window in the middle portion, the auxiliary support is arranged in the empty window, and the electrotherapy assembly is arranged on the inner side surface of the auxiliary support.
[0013] The beneficial effects of the present application are as follows:
[0014] The present application provides a fracture fixation frame, the rotation adjustment of the minimally invasive fixation needle is realized through the ball head assembly, the accurate alignment of the minimally invasive fixation needle is realized, then the locking screw and the sleeve filled with the rubber ring are matched to lock the adjusted minimally invasive fixation needle, the pulse massager arranged in the protective inner shell or the electrotherapy assembly arranged in the empty window of the shell is used to realize the purpose of auxiliary treatment. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description, and obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.
[0016] Figure 1 It is a first angle schematic view of the fracture fixation frame.
[0017] Figure 2 is the second angle schematic view of the fracture fixation frame;
[0018] Figure 3 is the structural schematic view of the locking mechanism;
[0019] Fig. 1. housing, 11. avoiding window, 12. protective inner shell, 13. sliding groove, 14. connecting seat, 15. empty window, 16. auxiliary support, 17. electrotherapy assembly, 2. minimally invasive fixation needle, 3. locking mechanism, 31. sleeve, 311. locking surface, 32. locking bolt, 33. rubber ring, 4. fine adjustment mechanism, 41. ball head, 42. movable plate, 43. locking screw. DETAILED DESCRIPTION
[0020] The technical scheme of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.
[0021] In order to realize the fine adjustment and fixation of the minimally invasive fixation needle, a fracture fixation frame is designed, as shown in the drawings, which comprises a housing 1. Figure 1 The housing 1 is composed of a left housing and a right housing, and the connecting seat and connecting screw are arranged on the splicing surface of the left housing and the right housing. The left housing and the right housing can also be fixed by clamping structure. The housing 1 comprises a metal outer shell and a protective inner shell 12. The outer shell has high support strength, and the inner shell is a protective pad connected to the inner side surface of the outer shell, which can be made of silica gel or leather and directly attached to the skin of the patient. A plurality of pulse modules can also be installed between the outer shell and the inner shell, and the pulse module is preferably a water pulse massager for pulse massage of the limbs.
[0022] An empty window 15 is formed in the middle of the housing 1, and an auxiliary support 16 is arranged in the empty window 15. An electrotherapy assembly 17 is arranged on the inner side surface of the auxiliary support 16. The electrotherapy assembly 17 is a device capable of automatically releasing electric current for treatment of human body through a circuit board. The setting of the electrotherapy assembly 17 can assist in the treatment of the limbs.
[0023] In order to realize the fixation of the minimally invasive fixation needle 2, a first hole group is arranged on the upper end of the housing 1, the first hole group is composed of a hole a and a hole b arranged oppositely, a second hole group is arranged on the lower end of the housing 1, the second hole group is composed of a hole c and a hole d arranged oppositely, forming four needle insertion holes, and the locking mechanism 3 for limiting the minimally invasive fixation needle 2 is arranged at the first hole group and the second hole group. The locking mechanism 3 at the second hole group is also provided with a fine adjustment mechanism 4 for adjusting the minimally invasive fixation needle 2, and the minimally invasive fixation needle 2 penetrates through the locking mechanism 3 and the fine adjustment mechanism 4.
[0024] In use, the two minimally invasive fixation needles 2 penetrating into the inside of the limb are respectively inserted into the two groups of holes, and then the four locking mechanisms 3 are respectively sleeved on the two ends of the two minimally invasive fixation needles 2, and the locking mechanisms 3 abut against the metal shell, and then the locking mechanisms 3 of the a hole and the b hole lock the first minimally invasive fixation needle 2; after the locking mechanisms 3 of the a hole and the b hole are locked, the minimally invasive fixation needle 2 located in the d hole is fine-tuned through the fine-tuning mechanism 4, the minimally invasive fixation needle 2 in the c hole rotates, and after the fine-tuning is completed, the second minimally invasive fixation needle 2 is locked through the locking mechanism 3, the connection of the two minimally invasive fixation needles 2 and the shell 1 is completed, the accurate alignment and effective fixation of the minimally invasive fixation needle 2 are realized.
[0025] Specifically, as shown in Figure 3 , the locking mechanism 3 includes a sleeve 31 and a locking bolt 32, the sleeve 31 has an opening, the inner wall of the opening is provided with an internal thread matched with the locking bolt 32, and the minimally invasive fixation needle 2 is fixed in the sleeve 31 through the locking bolt 32. The sleeve 31 is also provided with a rubber ring 33, which is filled between the sleeve 31 and the locking bolt 32, and the rubber ring 33 is sealed in the sleeve 31 by the locking bolt 32.
[0026] The locking mechanism 3 is divided into a locked state and an unlocked state. When the locking mechanism 3 is in the unlocked state, it can move along the axis direction of the minimally invasive fixation needle 2 outside the minimally invasive fixation needle 2 until the locking mechanism 3 falls off from the outside of the minimally invasive fixation needle 2. When the locking mechanism 3 is in the locked state, it is locked outside the minimally invasive fixation needle 2 and cannot move. When the position adjustment of the minimally invasive fixation needle 2 and the shell 1 is completed, the locking mechanism 3 in the unlocked state is moved outside the minimally invasive fixation needle 2 until the sleeve 31 abuts against the shell 1, and then the locking bolt 32 is tightened and moves towards the direction close to the rubber ring 33 and extrudes the rubber ring 33. When the rubber ring 33 is extruded, it can only be extruded towards the direction close to the minimally invasive fixation needle 2 due to the limitation in other directions, so that the inner wall of the rubber ring 33 abuts tightly against the minimally invasive fixation needle 2, and the rubber ring 33 locks the minimally invasive fixation needle 2, that is, it is switched to the locked state. Since the two locking mechanisms 3 are respectively located on the two sides of the shell 1, the sliding of the minimally invasive fixation needle 2 to the two sides can be limited, so as to achieve the purpose of locking the position of the minimally invasive fixation needle 2 on the shell 1.
[0027] As shown in Figure 1 and 2 , in order to realize the fine-tuning of the minimally invasive fixation needle 2, the fine-tuning mechanism 4 includes a ball head 41, a spherical cavity capable of accommodating the ball head 41 is arranged in the needle hole of the second hole group, and a through hole for the minimally invasive fixation needle 2 to pass through is further arranged on the ball head 41, and the minimally invasive fixation needle 2 rotates around the needle hole through the ball head 41. The arrangement of the ball head 41 can make the minimally invasive fixation needle 2 connected thereto rotate, so as to achieve the purpose of fine-tuning the minimally invasive fixation needle 2.
[0028] One of the through holes of the second hole group is further provided with a movable plate 42 and a locking screw 43, the movable plate 42 is connected with the shell 1 through the locking screw 43 at the upper part of the movable plate 42, a spherical cavity provided with a ball head 41 is arranged at the lower part of the movable plate 42, the end of the sleeve 31 corresponding to the spherical cavity is provided with a locking surface 311 which is engaged with the ball head 41, the semi-spherical locking surface 311 and the ball head 41 are in clearance fit, so that the sliding groove 13 can be tightly abutted against the movable plate 42 to complete positioning, the shell 1 is further provided with an avoiding window 11 for allowing the minimally invasive fixation needle 2 to rotate. The minimally invasive fixation needle 2 can be rotated by rotating the movable plate 42, the position of the minimally invasive fixation needle 2 is adjusted, after the adjustment is completed, the locking screw 43 is rotated, the movable plate 42 is abutted against the shell 1, and the position of the movable plate 42 is locked, and the minimally invasive fixation needle 2 is locked after the movable plate 42 is locked.
[0029] The metal shell is provided with a sliding groove 13 for allowing the movable plate 42 to longitudinally displace, and the end of the locking screw 43 is provided with a connecting block which is movably assembled in the sliding groove 13, the movable plate 42 is screwed with the connecting block through the locking screw 43, the connecting block can be in a circular plate structure or a spherical structure, so that the connecting block can rotate and vertically slide in the sliding groove 13, thereby the movable plate 42 can be adjusted in a larger range.
[0030] The above description is only illustrative but not restrictive for the utility model, and those skilled in the art can make many modifications, changes or equivalents without departing from the spirit and scope defined by the appended claims, and all shall fall within the protection scope of the utility model.
Claims
1. A fracture fixation frame, comprising a shell (1) worn on a limb and two minimally invasive fixation pins (2) respectively penetrating from the upper and lower ends of the shell (1), the upper end of the shell (1) is provided with a first hole group, the lower end of the shell (1) is provided with a second hole group, forming four pin holes, characterized in that: The first hole group and the second hole group are provided with locking mechanisms (3) for limiting the micro-invasive fixing needle (2), the locking mechanism (3) of the second hole group is further provided with a fine adjustment mechanism (4) for adjusting the micro-invasive fixing needle (2), and the micro-invasive fixing needle (2) penetrates through the locking mechanism (3) and the fine adjustment mechanism (4).
2. A bone fracture fixation frame according to claim 1, wherein: The locking mechanism (3) comprises a sleeve (31) and a locking bolt (32), the sleeve (31) has an opening, the inner wall of the opening is provided with an internal thread matched with the locking bolt (32), and the micro-invasive fixing needle (2) is fixed in the sleeve (31) through the locking bolt (32).
3. A bone fracture fixation frame according to claim 2, wherein: The sleeve (31) is further provided with a rubber ring (33) filled between the sleeve (31) and the locking bolt (32), and the rubber ring (33) is sealed in the sleeve (31) by the locking bolt (32).
4. A bone fracture fixation frame according to claim 3, wherein: The fine adjustment mechanism (4) comprises a ball head (41), the needle-penetrating hole of the second hole group is provided with a spherical cavity capable of accommodating the ball head (41), the ball head (41) is further provided with a through hole through which the micro-invasive fixing needle (2) penetrates, and the micro-invasive fixing needle (2) rotates around the needle-penetrating hole through the ball head (41).
5. A bone fracture fixation frame according to claim 4, wherein: The needle-penetrating hole of the second hole group is further provided with a movable plate (42) and a locking screw (43), the movable plate (42) is connected with the shell (1) through the locking screw (43) on the upper part of the movable plate (42), the spherical cavity provided with the ball head (41) is arranged on the lower part of the movable plate (42), the end of the sleeve (31) corresponding to the spherical cavity is provided with a locking surface (311) matched with the ball head (41), and the shell (1) is further provided with an avoiding window (11) through which the micro-invasive fixing needle (2) rotates.
6. A bone fracture fixation frame according to claim 5, wherein: The shell (1) comprises a metal shell and a protective inner shell (12), the metal shell is provided with a sliding groove (13) through which the movable plate (42) longitudinally displaces, the end of the locking screw (43) is provided with a connecting block movably assembled in the sliding groove (13), and the movable plate (42) is screwed with the connecting block through the locking screw (43).
7. A bone fracture fixation frame according to claim 6, wherein: The shell (1) is semi-annular, the shell (1) is composed of a left shell and a right shell, and the splicing surfaces of the left shell and the right shell are both provided with a connecting seat (14) and a connecting screw.
8. A bone fracture fixation frame according to claim 7, wherein: The shell (1) is provided with an empty window (15) in the middle, the empty window (15) is provided with an auxiliary support (16), and the inner side surface of the auxiliary support (16) is provided with an electrotherapy assembly (17).