Proximal femur special-shaped block and bridge connecting and fixing device
By setting a specific combination of threaded holes and through holes in the proximal femur proximal block and bridge connection fixing device, the internal stress during screw extrusion and chamfering are provided at the edge of the block, the problems of easy breakage, weight increase and scratches in the prior art are solved, and the stability and safety of the device are improved.
Patent Information
- Application Number
- CN202323104788.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-17
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2033-11-17
AI Technical Summary
When the existing proximal femoral opposite-sex module is installed and tightened by the locking thread, the internal stress of the screw pressing on it may cause breakage, and the weight of the fixing part increases, and the muscle tissue is easily scratched at the edges and corners.
A proximal femoral block and bridge connection fixing device are designed. Through the coordination of the median lower inclined threaded hole, the median bottom threaded hole, and the through hole, the internal stress during screw extrusion is reduced, and chamfers are provided at the edge of the block to reduce weight and scratch risks.
The device is effectively avoided, the internal stress in adjacent holes and bends of the links is reduced, the weight of the device is reduced, and the muscle tissue of the patient is scratched at the edges and corners.
Smart Images
Figure CN222604656U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of orthopedic medical instruments, in particular to a proximal femoral special-shaped block and a bridge connection and fixing device. Background Art
[0002] Orthopedic products are mainly medical consumables and related surgical tools used to treat orthopedic diseases. Orthopedic consumables, as the most important orthopedic products, refer to a large category of implants and surgical consumables used to replace, repair, supplement and fill human bones and related soft tissues. With the increase of global aging, the number of proximal femoral fractures has greatly increased, and the corresponding proximal femoral surgery and product demands have greatly increased. The quality issue has also become a huge challenge facing doctors.
[0003] At present, the existing proximal femoral anisotropic block modules still have many deficiencies. First, in the adjacent holes and bends of each link, when installing and tightening the locking screws, the internal stress of the screws squeezing them may cause them to break. Secondly, each fixing part is a whole, and its weight will be greatly increased, which is not conducive to operation. Finally, its appearance has some edges and corners, which may cause scratches on muscle tissue at the edges and corners during medical practice, thereby causing harm to the patient, and the edges and corners will also increase the overall weight of the device. Utility Model Content
[0004] 1. Technical issues to be resolved
[0005] The utility model aims at the deficiencies of the prior art and provides a proximal femoral special-shaped block and a bridge connection fixing device, which solves the problem that the fixing part breaks when the screw is squeezed because no measures are taken for adjacent holes and bends of the links in the background technology.
[0006] (II) Technical solution
[0007] To achieve the above-mentioned purpose, the following technical solution is provided: a proximal femoral shaped block, comprising a first fixing part, wherein the first fixing part as a whole is an arc surface structure that fits the proximal femur. The first fixing part is provided with a top threaded hole, a median rear threaded hole and a median front threaded hole are provided at the median rear side of the first fixing part, a median front lower threaded hole is provided at the median front lower side of the first fixing part, a median lower inclined threaded hole is provided at the median lower part of the first fixing part, a median bottom threaded hole is provided at the median bottom of the first fixing part, a first through hole is provided at the bottom of the first fixing part, a second through hole is provided at the top of the first fixing part, a third through hole is provided at the median middle of the first fixing part, a fourth through hole is provided at the median rear side of the first fixing part, a pipe sleeve is fixed on the left and right sides of the bottom of the first fixing part, and a first ball socket is provided on the bottom surface of the first fixing part.
[0008] Preferably, the inner wall of the top threaded hole is threadedly connected with a first locking threaded nail, the lower surface of the mid-rear threaded hole is threadedly connected with a second locking threaded nail, the inner wall of the mid-front threaded hole is threadedly connected with a third locking threaded nail, the inner wall of the mid-front lower threaded hole is threadedly connected with a fourth locking threaded nail, the inner wall of the mid-lower inclined threaded hole is threadedly connected with a fifth locking threaded nail, and the inner wall of the mid-bottom threaded hole is threadedly connected with a sixth locking threaded nail, a limiting groove is provided on the inner wall of the first through hole, the first ball socket portion is interconnected with the interior of the first through hole, and the adjacent surfaces of the mid-lower inclined threaded hole and the mid-bottom threaded hole are interconnected.
[0009] Preferably, a second fixing portion and a third fixing portion are provided on the outer surface of the lower end of the connecting rod, a top median threaded hole is provided at the top of the second fixing portion, a middle through hole is provided at the middle of the second fixing portion, and a bottom median threaded hole is provided at the bottom of the second fixing portion.
[0010] Preferably, a seventh locking threaded nail is threadedly connected to the inner wall of the top middle threaded hole, and an eighth locking threaded nail is threadedly connected to the inner wall of the bottom middle threaded hole.
[0011] Preferably, the third fixing portion has the same structure as the second fixing portion.
[0012] (III) Beneficial effects
[0013] Compared with the prior art, the utility model provides a proximal femoral special-shaped block and a bridge connection and fixing device, which has the following beneficial effects:
[0014] 1. The utility model achieves the effect of reducing the internal stress caused by the extrusion of screws at adjacent holes and bends of the link through the coordinated arrangement of the middle lower inclined threaded hole, the middle bottom threaded hole, the first through hole, the second through hole, the third through hole, and the fourth through hole, thereby avoiding the device from breaking. The arrangement of the through holes can also relieve the internal stress and reduce the weight.
[0015] 2. The utility model achieves the goal of preventing doctors from scratching the patient's muscle tissue at angular locations during work by setting the chamfers on the edges of the blocks, thereby causing secondary injuries to the patients. At the same time, the chamfers can also be used for weight reduction. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the top view of the structure of the proximal femoral special-shaped block of the utility model;
[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the bridge connection fixing device of the utility model;
[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the proximal femoral special-shaped block of the utility model;
[0019] Figure 4 This is a schematic diagram of the top view of the bridge connection and fixing device of the utility model.
[0020] In the figure: 1, connecting rod; 2, first fixing part; 201, top threaded hole; 202, middle rear threaded hole; 203, middle front threaded hole; 204, middle front lower threaded hole; 205, middle lower inclined threaded hole; 206, middle bottom threaded hole; 207, first through hole; 208, second through hole; 209, third through hole; 2010, fourth through hole; 2011, sleeve; 2012, first ball socket; 3, second fixing part; 301, top middle threaded hole; 302, middle through hole; 303, bottom middle threaded hole; 304, second ball socket; 4, third fixing part; 5, first locking screw nail; 6, second locking screw nail; 7, third locking screw nail; 8, fourth locking screw nail; 9, fifth locking screw nail; 10, sixth locking screw nail; 11, seventh locking screw nail; 12, eighth locking screw nail. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments, not all of the embodiments. Based on the embodiments in the embodiments, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection.
[0022] Embodiment 1:
[0023] See also Figure 1-4A bridge connection fixing device, comprising a connecting rod 1, a proximal femoral shaped block, a second fixing part 3 and a third fixing part 4, wherein the proximal femoral shaped block comprises a first fixing part 2, wherein the first fixing part 2 is an arc surface structure that fits the proximal femur as a whole, wherein a top threaded hole 201 is arranged at the top of the first fixing part 2, a median rear threaded hole 202 and a median front threaded hole 203 are arranged at the median rear side of the first fixing part 2, a median front lower threaded hole 204 is arranged at the median front lower side of the first fixing part 2, and a median lower inclined The threaded hole 205, the middle bottom threaded hole 206 of the first fixing part 2 is provided, the first fixing part 2 is provided with a first through hole 207 at the bottom, the first fixing part 2 is provided with a second through hole 208 at the top, the first fixing part 2 is provided with a third through hole 209 at the middle of the middle, the first fixing part 2 is provided with a fourth through hole 2010 at the bottom of the middle rear side, the first fixing part 2 is fixed with a sleeve 2011 on the left and right sides of the bottom, the first fixing part 2 is provided with a first ball socket 2012 on the bottom surface, and the inner wall of the top threaded hole 201 is threadedly connected with a first locking screw 5 The lower surface of the middle rear threaded hole 202 is threadedly connected with a second locking threaded nail 6, the inner wall of the middle front threaded hole 203 is threadedly connected with a third locking threaded nail 7, the inner wall of the middle front lower threaded hole 204 is threadedly connected with a fourth locking threaded nail 8, the inner wall of the middle lower inclined threaded hole 205 is threadedly connected with a fifth locking threaded nail 9, and the inner wall of the middle bottom threaded hole is threadedly connected with a sixth locking threaded nail 10. A limiting groove is provided on the inner wall of the first through hole 207, the first ball socket portion 2012 is interconnected with the inside of the first through hole 207, and the middle lower inclined threaded hole 205 The adjacent surfaces of the median bottom threaded hole 206 are interconnected, and the outer surface of the lower end of the connecting rod 1 is provided with a second fixing part 3 and a third fixing part 4, a top of the second fixing part 3 is provided with a top median threaded hole 301, a middle through hole 302 is provided in the middle of the second fixing part 3, a bottom median threaded hole 303 is provided at the bottom of the second fixing part 3, the inner wall of the top median threaded hole 301 is threadedly connected with the seventh locking threaded nail 11, the inner wall of the bottom median threaded hole 303 is threadedly connected with the eighth locking threaded nail 12, and the third fixing part 4 has the same structure as the second fixing part 3.
[0024] Working principle: When the equipment needs to be installed, first insert the connecting rod 1 into the pipe sleeve 2011. At this time, place the retaining ring inside the first through hole 207, insert the pin shaft along the first ball socket 2012 to prevent the retaining ring from falling out, limit the retaining ring, and then screw the clamping cap into the retaining ring. The clamping cap pushes the two sides of the retaining ring to squeeze the connecting rod 1, thereby locking the connecting rod 1 in the pipe sleeve 2011 to achieve the installation of the equipment. The second fixing part 3 and the third fixing part 4 are installed in the same way. This design can achieve the effect of quick and convenient installation of the device.
[0025] The design connects the lower median inclined threaded hole 205 and the bottom median threaded hole 206 to each other, thereby reducing the internal stress of the screws when they are squeezed in adjacent holes and bends, avoiding breakage, and providing multiple special-shaped holes without screws to reduce the internal stress and achieve the purpose of weight reduction.
[0026] The design chamfers the edges of the block to prevent the doctor from scratching the patient's muscle tissue at the corners while working. The chamfer also reduces the weight of the equipment to a certain extent.
[0027] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit thereof, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A proximal femoral shaped block, comprising a first fixing portion (2), characterized in that: The first fixing portion (2) is an overall curved surface structure that fits the proximal end of the femur; a top threaded hole (201) is provided at the top of the first fixing portion (2); a median rear threaded hole (202) and a median front threaded hole (203) are provided at the median rear side of the first fixing portion (2); a median front lower threaded hole (204) is provided at the median front lower side of the first fixing portion (2); a median lower inclined threaded hole (205) is provided at the median lower part of the first fixing portion (2); a median bottom threaded hole (206) is provided at the median bottom of the first fixing portion (2); a first through hole (207) is provided at the bottom of the first fixing portion (2); and the first fixing portion (2) is provided with a plurality of threaded holes. ) is provided with a second through hole (208) at the top, a third through hole (209) is provided at the middle of the first fixing portion (2), a fourth through hole (2010) is provided at the bottom of the middle rear side of the first fixing portion (2), the left and right sides of the bottom of the first fixing portion (2) are fixed with pipe sleeves (2011), a first ball socket portion (2012) is provided on the bottom surface of the first fixing portion (2), a limiting groove is provided on the inner wall of the first through hole (207), the first ball socket portion (2012) and the inside of the first through hole (207) are interconnected, and the adjacent surfaces of the middle lower inclined threaded hole (205) and the middle bottom threaded hole (206) are interconnected.
2. The proximal femoral special-shaped block according to claim 1, characterized in that: The inner wall of the top threaded hole (201) is threadedly connected with a first locking threaded nail (5), the lower surface of the middle rear threaded hole (202) is threadedly connected with a second locking threaded nail (6), the inner wall of the middle front threaded hole (203) is threadedly connected with a third locking threaded nail (7), the inner wall of the middle front lower threaded hole (204) is threadedly connected with a fourth locking threaded nail (8), the inner wall of the middle lower inclined threaded hole (205) is threadedly connected with a fifth locking threaded nail (9), and the inner wall of the middle bottom threaded hole (206) is threadedly connected with a sixth locking threaded nail (10).
3. A bridge connection fixing device, comprising a connecting rod (1), a proximal femoral shaped block, a second fixing part (3) and a third fixing part (4), characterized in that: The proximal femoral shaped block adopts the proximal femoral shaped block as described in any one of claims 1-2, and the outer surface of the lower end of the connecting rod (1) is provided with a second fixing part (3) and a third fixing part (4), the top of the second fixing part (3) is provided with a top median threaded hole (301), the middle of the middle of the second fixing part (3) is provided with a middle through hole (302), and the bottom of the second fixing part (3) is provided with a bottom median threaded hole (303).
4. A bridge connection fixing device according to claim 3, characterized in that: The inner wall of the top middle threaded hole (301) is threadedly connected with a seventh locking threaded nail (11), and the inner wall of the bottom middle threaded hole (303) is threadedly connected with an eighth locking threaded nail (12).
5. A bridge connection fixing device according to claim 3, characterized in that: The third fixing portion (4) has the same structure as the second fixing portion (3).