CN115998487B - Bone supporting prosthesis - Google Patents
Bone supporting prosthesis Download PDFInfo
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- CN115998487B CN115998487B CN202310167557.3A CN202310167557A CN115998487B CN 115998487 B CN115998487 B CN 115998487B CN 202310167557 A CN202310167557 A CN 202310167557A CN 115998487 B CN115998487 B CN 115998487B
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Abstract
The present invention provides a bone supporting prosthesis comprising: a fixing seat; the supporting rod can be arranged in a floating mode through the elastic piece and the fixing seat, the supporting rod penetrates through the fixing seat, the supporting surface of the supporting rod protrudes out of the fixing seat, and the elastic piece applies elastic force towards the supporting surface direction of the supporting rod to the supporting rod, so that the supporting rod is in a pressed state and a rebound state. According to the technical scheme, the problem that stress concentration phenomenon is easy to occur at the junction of the bone supporting prosthesis and the relatively loose bone of the affected area in the related technology, so that the bone of the affected area collapses is effectively solved.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a bone supporting prosthesis.
Background
The femoral head is broken under the top half moon-shaped cartilage when necrotizing, the bone trabecula under the femoral head is separated from the cartilage, and the X-ray film shows a crescent transparent belt with the width of 2mm to 4mm below the osteogenic joint surface, namely 'crescent sign', also called 'half moon sign'. The crescent moon sign is a cavity formed under a fracture line after fracture and below a subchondral bone plate in an unrepaired necrotic cancellous bone region, starts from focal bone absorption of the subchondral bone plate at the junction of the repaired necrotic bone outside a femoral head, the unrepaired necrotic bone and the subchondral bone plate, the focal absorption generates cracks on the subchondral bone plate, the cracks generate to cause stress concentration around the cracks, and concentrated stress is accumulated at the junction of the subchondral bone plate and the unrepaired necrotic cancellous bone to cause fracture at the junction of the subchondral bone plate and the unrepaired subchondral bone. The generation of fissures also provides a channel for outflow of interstitial water in bone marrow, and under the action of functional load, the interstitial water existing in the unrepaired necrotic cancellous bone skeleton is gradually extruded, so that the effective stress exerted on the unrepaired necrotic cancellous bone skeleton is increased. When the effective stress exceeds the mechanical strength of the unrepaired necrotic cancellous bone scaffold, the unrepaired necrotic cancellous bone scaffold is compressed, the volume is reduced, resulting in the formation of a crescent-shaped cavity of the subchondral bone plate, displaying crescent signs on the X-ray film.
The occurrence of the crescent moon sign is a sign that the femoral head is about to necrosed and collapse, which is the final opportunity of hip protection treatment, so that the treatment of grasping the crescent moon sign opportunity is of great importance. The treatment of the situation is mainly to improve symptoms, prolong the service life of the femoral head as much as possible, delay the necrosis process of the femoral head, and generally require the patient to lean on the crutch as much as possible to move, reduce the load, treat hyperbaric oxygen, and treat the drilling and decompression operation. Over time, if femoral head necrosis continues to aggravate, the femoral head necrosis of a patient can occur, collapse can occur, long and short legs can occur, the mobility of the hip joint can be seriously affected, and normal functions can be affected.
The bone supporting prosthesis is implanted into the bone of a human body to support the bone of the crescent moon part, and provides opportunities for the rehabilitation and reconstruction of the patient while delaying the expansion of the crescent moon region. The bone of the affected area is relatively loose, when the bone of the affected area is subjected to relatively high pressure, the junction of the bone supporting prosthesis in the related art and the relatively loose bone of the affected area is easy to generate stress concentration, so that the bone of the affected area is collapsed, the connection between the bone supporting prosthesis in the related art and the bone of a human body is loosened, and the bone supporting prosthesis in the related art is further caused to fall off.
Disclosure of Invention
The invention mainly aims to provide a bone supporting prosthesis to solve the problem that in the related art, stress concentration is easy to occur at the junction of the bone supporting prosthesis and loose bone in a diseased area, so that the bone in the diseased area is collapsed.
In order to achieve the above object, the present invention provides a bone supporting prosthesis comprising: a fixing seat; the supporting rod can be arranged in a floating mode through the elastic piece and the fixing seat, the supporting rod penetrates through the fixing seat, the supporting surface of the supporting rod protrudes out of the fixing seat, and the elastic piece applies elastic force towards the supporting surface direction of the supporting rod to the supporting rod, so that the supporting rod is in a pressed state and a rebound state.
Further, the fixing base comprises a sleeve seat and a guide rod portion, the first end of the support rod is connected in the sleeve seat, the second end of the support rod penetrates through the sleeve seat, the supporting surface protrudes out of the sleeve seat, the first end of the guide rod portion is connected in the sleeve seat, the second end of the guide rod portion penetrates through the sleeve seat and is located in the support rod, the two ends of the elastic piece are respectively abutted between the support rod and the guide rod portion, the support rod floats along the extending direction of the guide rod portion, and the supporting surface is the end face of the second end of the support rod.
Further, the supporting surface comprises a plurality of sections of cambered surfaces which are sequentially connected.
Further, the support bar includes a plurality of support flaps, and a plurality of support flaps enclose a circle, and each support flap is provided along the extension direction of guide bar portion in a floating manner independently of each other.
Further, a plurality of supporting petals are protruded out of the end face of the fixing seat to form a plurality of sections of cambered surfaces in one-to-one correspondence, and each section of cambered surface is in a fan shape.
Further, an accommodating groove for accommodating the elastic piece is formed in the first end of the supporting rod, and the accommodating groove penetrates through the end face of the first end of the supporting rod.
Further, a plurality of supporting petals enclose into the round in order to form first avoidance through-hole in the centre, and the inside of guide rod portion is provided with the second that dodges the through-hole with first avoidance through-hole intercommunication.
Further, the guide rod portion comprises a first rod section portion and a second rod section portion with the outer diameter larger than that of the first rod section portion, a step surface is formed between the first rod section portion and the second rod section portion, the first rod section portion is arranged in the support rod in a penetrating mode, the first end of the second rod section portion is located outside the second end, far away from the support rod, of the support rod, and two ends of the elastic piece are respectively abutted between the first end of the support rod and the step surface.
Further, the first end of guide rod portion is connected in the first end of sleeve seat, and the first end of bracing piece is located between the first end of guide rod portion and the second end of sleeve seat, and the second end of guide rod portion wears to be provided with first stop ring in the second end of sleeve seat, and the first end of bracing piece is provided with and stops ring backstop complex second stop ring with first stop ring.
Further, the bone supporting prosthesis further comprises a connecting piece connected with one end, far away from the supporting surface, of the fixing seat, and a connecting part protruding out of the fixing seat is arranged on the connecting piece.
By applying the technical scheme of the invention, the bone supporting prosthesis comprises: fixing base and supporting rod. The supporting rod can be arranged in a floating mode through the elastic piece and the fixing base, the supporting rod penetrates through the fixing base, and the supporting surface of the supporting rod protrudes out of the fixing base. The elastic member applies an elastic force to the support bar in a direction toward the support surface of the support bar so that the support bar has a pressed state and a rebound state. The fixing base can be fixedly connected with human bones, and the supporting rods can be supported on bones of the affected areas so as to delay the expansion of the affected areas and provide opportunities for rehabilitation and reconstruction of patients. When the pressure applied to the bone of the affected area is high, the supporting surface of the supporting rod is pressed, and the elastic piece is compressed and applies elastic force to the supporting rod towards the direction of the supporting surface, so that the bone supporting prosthesis and the bone of the affected area can be simultaneously pressed and deformed. When the bone of the affected area is not stressed, the elastic piece applies elastic force towards the supporting surface to the supporting rod, so that the supporting rod is switched from a stressed state to a rebound state. When the setting of elastic component makes the sclerotin of sick area receive the pressure, the bone support prosthesis can produce deformation simultaneously with the sclerotin of sick area to reduce the difference of elastic modulus and rigidity between the sclerotin of bone support prosthesis and sick area, improve the mechanical environment of sclerotin of sick area, in order to avoid the problem that the juncture of bone support prosthesis and the comparatively loose sclerotin of sick area in the correlation technique easily produces stress concentration phenomenon. Therefore, the technical scheme of the application effectively solves the problem that the junction of the bone supporting prosthesis and the relatively loose bone of the affected area in the related technology is easy to generate stress concentration, so that the bone of the affected area collapses.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
fig. 1 shows a schematic front view of an embodiment of a bone supporting prosthesis according to the invention;
FIG. 2 shows a schematic side view of the support rod of the bone supporting prosthesis of FIG. 1 in a compressed state;
FIG. 3 shows a schematic cross-sectional view in the A-A direction of the bone supporting prosthesis of FIG. 2;
FIG. 4 shows a schematic exploded view of the bone supporting prosthesis of FIG. 1;
FIG. 5 shows a schematic cross-sectional view of an exploded structure of the bone supporting prosthesis of FIG. 1;
FIG. 6 shows a schematic cross-sectional view of the support rod of the bone support prosthesis of FIG. 1 in a rebound state;
FIG. 7 shows a schematic perspective view of the support rod of the bone supporting prosthesis of FIG. 1;
fig. 8 shows a schematic perspective view of two oppositely disposed support petals of the support rod of the bone support prosthesis of fig. 7.
Wherein the above figures include the following reference numerals:
10. a fixing seat; 11. a sleeve seat; 12. a guide rod portion; 121. a first pole segment; 122. a second pole segment; 13. a second avoidance through hole; 14. a step surface; 15. a first stop ring;
20. a support rod; 21. a support surface; 22. a support flap; 23. a receiving groove; 24. the first avoidance through hole; 25. a second stop ring;
30. a connecting piece; 31. a connection part;
40. an elastic member.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
As shown in fig. 1 to 4, the bone supporting prosthesis includes: the fixing base 10 and the supporting rod 20. The supporting rod 20 is floatably arranged with the fixing base 10 through the elastic member 40, the supporting rod 20 penetrates through the fixing base 10, and the supporting surface 21 of the supporting rod 20 protrudes out of the fixing base 10. The elastic member 40 applies an elastic force to the support rod 20 in a direction toward the support surface 21 of the support rod 20 so that the support rod 20 has both a pressed state and a rebound state.
By applying the technical solution of the present embodiment, a bone supporting prosthesis comprises: the fixing base 10 and the supporting rod 20. The supporting rod 20 is floatably arranged with the fixing base 10 through the elastic member 40, the supporting rod 20 penetrates through the fixing base 10, and the supporting surface 21 of the supporting rod 20 protrudes out of the fixing base 10. The elastic member 40 applies an elastic force to the support rod 20 in a direction toward the support surface 21 of the support rod 20 so that the support rod 20 has both a pressed state and a rebound state. The fixing seat 10 can be fixedly connected with the bone of a human body, and the supporting rod 20 can be supported on the bone of a diseased region so as to delay the expansion of the diseased region and provide opportunities for rehabilitation and reconstruction of the patient. When the bone of the affected area is subjected to a large pressure, the supporting surface 21 of the supporting rod 20 is subjected to a pressure, and the elastic member 40 is compressed and applies an elastic force to the supporting rod 20 in a direction toward the supporting surface 21, so that the bone supporting prosthesis and the bone of the affected area can be simultaneously subjected to a pressure and deformed. When the bone of the affected area is not pressurized, the elastic member 40 applies an elastic force toward the supporting surface 21 to the supporting rod 20, so that the supporting rod 20 is switched from the pressurized state to the rebound state. When the bone of the affected area is stressed by the elastic element 40, the bone supporting prosthesis can deform simultaneously with the bone of the affected area, so that the difference of the elastic modulus and the rigidity between the bone supporting prosthesis and the bone of the affected area is reduced, the mechanical environment of the bone of the affected area is improved, and the problem that the junction between the bone supporting prosthesis and the relatively loose bone of the affected area in the related art is easy to generate stress concentration is avoided. Therefore, the technical scheme of the embodiment effectively solves the problem that the junction of the bone supporting prosthesis and the loose bone in the affected area in the related technology is easy to generate stress concentration, so that the bone in the affected area collapses.
The inventor finds that the bone supporting prosthesis in the related art is a rigid piece, so that the elastic modulus of the bone supporting prosthesis in the related art is larger than that of the bone with loose diseased area, when the bone with loose diseased area is subjected to larger pressure, the phenomenon of stress concentration is easy to occur at the junction of the bone supporting prosthesis in the related art and the bone with loose diseased area, the bone with loose diseased area is caused to collapse, the connection between the bone supporting prosthesis in the related art and the bone of a human body is loosened, and the bone supporting prosthesis in the related art is further caused to fall off.
By applying the technical scheme of the embodiment, when the bone of the affected area is stressed, the bone supporting prosthesis can deform simultaneously with the bone of the affected area, so that the difference of elastic modulus between the bone supporting prosthesis and the bone of the affected area is reduced, the mechanical environment of the bone of the affected area is improved, and the phenomenon of stress concentration at the junction of the bone supporting prosthesis and the relatively loose bone of the affected area in the related technology is avoided.
As shown in fig. 1 to 6, the fixing base 10 includes a sleeve base 11 and a guide rod portion 12. The sleeve seat 11 can be fixedly connected with human bones, and the supporting surface 21 can be supported on bones of affected areas. The first end of bracing piece 20 is connected in sleeve seat 11, and the second end of bracing piece 20 wears out in sleeve seat 11, and holding surface 21 protrusion is in sleeve seat 11 to make the first end of bracing piece 20 can pass through sleeve seat 11 and human bone fixed connection, the second end of bracing piece 20 can support in the sclerotin of sick region. The first end of the guide rod portion 12 is connected in the sleeve seat 11, and the second end of the guide rod portion 12 penetrates through the sleeve seat 11 and is located inside the support rod 20 so as to play a role in guiding when the support rod 20 floats. The elastic member 40 has both ends respectively abutted between the support rod 20 and the guide rod portion 12 so that the support rod 20 can float with respect to the guide rod portion 12 and switch between a pressed state and a rebound state. The support rod 20 floats along the extending direction of the guide rod portion 12 so that the support rod 20 can float along a preset direction to make the support of the bone of the affected area by the support rod 20 more reliable. The support surface 21 is an end surface of the second end of the support rod 20.
As shown in fig. 1 to 6, the supporting surface 21 includes a plurality of arc surfaces connected in sequence, so that the shape of the supporting surface 21 is adapted to the outer contour and the arc of the femoral head, so that the supporting force of the supporting surface 21 on the bone of the affected area is more uniform, the problem that the junction between the bone supporting prosthesis and the bone with relatively loose affected area in the related art is prone to generating stress concentration is further avoided, and the supporting effect of the bone supporting prosthesis on the bone of the affected area is further improved.
As shown in fig. 3 to 8, the support bar 20 includes a plurality of support flaps 22, and the plurality of support flaps 22 are disposed around one circle. Each of the support flaps 22 is floatingly provided independently of each other in the extending direction of the guide rod portion 12. The plurality of mutually independent support petals 22 are arranged, so that when part of the support rods 20 are stressed, the support petals 22 correspondingly stressed can float, and the unstressed part of the support petals 22 can continuously support the bone of the affected area, so that the bone support prosthesis can support the bone of the affected area more accurately and reliably.
As shown in fig. 3 to 8, the supporting petals 22 are protruded from the end surface of the fixing base 10 to form a multi-segment cambered surface in a one-to-one correspondence, so that the supporting petals 22 are protruded from the end surface of the fixing base 10 to be matched with the outer contour and radian of the femoral head, and the supporting force of the supporting surface 21 on the bone of the affected area is more uniform. Each section of arc surface is fan-shaped, so that the supporting surface 21 of the supporting rod 20 can enclose an arc surface.
As shown in fig. 1 to 6, a receiving groove 23 for receiving the elastic member 40 is provided in the first end of the support rod 20, and the receiving groove 23 penetrates an end surface of the first end of the support rod 20. The setting of holding tank 23 is convenient for the setting of elastic component 40 to make elastic component 40 can stretch and draw along the direction of holding tank 23, more stable when making elastic component 40 drive bracing piece 20 float, improved the reliability when bracing piece 20 floats.
In this embodiment, the elastic member 40 is a spring, and three receiving grooves 23 are disposed in the first end of each supporting flap 22, each receiving groove is a cylindrical groove, and a spring, preferably a compression spring, is disposed in each receiving groove 23. The stiffness of the spring is consistent with the elastic modulus of the bone in the affected area, the spring is suitable for the biomechanical environment of the bone, the absorption of lesions and the reconstruction of new bone are facilitated, and continuous stress stimulation is provided for the bone in the affected area.
As shown in fig. 1 to 8, the plurality of support flaps 22 are enclosed in a circle to form a first escape through hole 24 in the middle thereof, and the inside of the guide rod portion 12 is provided with a second escape through hole 13 communicating with the first escape through hole 24. When the setting of first through-hole 24 and second through-hole 13 of dodging is convenient for bone supporting prosthesis implantation, first through-hole 24 and second through-hole 13 of dodging can dodge the pilot pin, and first through-hole 24 and second through-hole 13 of dodging remove along the extending direction of pilot pin to fix in the sclerotin of sick region accurately. In this embodiment, the positioning needle is a k-wire.
As shown in fig. 1 to 6, the guide rod portion 12 includes a first rod segment portion 121 and a second rod segment portion 122 having an outer diameter larger than the first rod segment portion 121. The step surface 14 is formed between the first rod section 121 and the second rod section 122, the first rod section 121 is arranged in the support rod 20 in a penetrating way, the second rod section 122 is positioned outside the second end of the support rod 20, which is far away from the first end of the support rod 20, and two ends of the elastic piece 40 are respectively abutted between the first end of the support rod 20 and the step surface 14. The first pole section 121 and the second pole section 122 are arranged, so that one end of the guiding pole section 12 can be arranged in the supporting pole 20 in a penetrating way and guide the supporting pole 20, and the elastic piece 40 is also convenient to abut against the guiding pole section 12. And the step surface 14 is provided to facilitate processing.
In the present embodiment, the plurality of support flaps 22 enclose a circle and form a mounting through hole in the middle thereof, the mounting through hole being provided in communication with the first escape through hole 24, the mounting through hole being capable of accommodating the first pole segment 121. The mounting through holes have a diameter greater than the first relief through holes 24 to form relief surfaces between the mounting through holes on the support flap 22 and the first relief through holes 24. The relief surface is in clearance fit with the end face of the first pole segment 121 when the support pole 20 is in a compressed state.
As shown in fig. 1 to 6, a first end of the guide rod portion 12 is connected within a first end of the sleeve mount 11. The first end of the support rod 20 is located between the first end of the guide rod portion 12 and the second end of the sleeve mount 11 such that the first end of the support rod 20 is capable of floating between the first end of the guide rod portion 12 and the second end of the sleeve mount 11. The second end of the guide rod portion 12 extends through the second end of the sleeve seat 11, so that the second end of the guide rod portion 12 can be located inside the support rod 20 to guide the support rod 20 when floating. The second end of the sleeve seat 11 is provided with a first stop ring 15, and the first end of the support rod 20 is provided with a second stop ring 25 in stop fit with the first stop ring 15. The arrangement of the first stop ring 15 and the second stop ring 25 enables the first end of the support rod 20 to be limited to float between the first end of the guide rod portion 12 and the second end of the sleeve seat 11, so that the first end of the support rod 20 can maintain a floating range, and the floating arrangement of the support rod 20 and the fixing seat 10 is more reliable.
In this embodiment, the outer sidewall of the second rod section 122 at the first end of the guide rod 12 is provided with a first external thread, and the first end of the sleeve seat 11 is provided with an internal thread matching the first external thread.
As shown in fig. 1 to 6, the bone supporting prosthesis further includes a connection member 30 connected to an end of the fixing base 10 remote from the supporting surface 21, and a connection portion 31 protruding from an outer side of the fixing base 10 is provided on the connection member 30. The provision of the connecting member 30 further enhances the stability and reliability of the bone supporting prosthesis in connection with the bone of the affected area. The connecting part 31 of the connecting piece 30 protruding outside the fixing base 10 can be better fixedly connected with the bone of the affected area so as to firmly fix the bone supporting prosthesis in the bone of the affected area.
In the present embodiment, the connection portion 31 is a second external thread, and the thread depth of the second external thread is preferably in the range of 1mm to 2 mm. An operation hole is formed in the end face, away from the fixing seat 10, of the connecting piece 30, and a tool is inserted into the operation hole to drive the connecting portion 31 to rotate, so that the connecting piece 30 is fixed in bone of a diseased area. The end face of the second pole section 122 facing the connecting part 31 is provided with a positioning hole, and the end face of the fixing part facing the second pole section 122 is provided with a positioning column, and the positioning hole is matched with the positioning column in a positioning way.
In this embodiment, a stepped hole having the outer diameter of the support rod 20 and the outer diameter of the socket 11 as apertures is drilled in the bone of the affected area prior to implantation of the bone supporting prosthesis. The stepped hole penetrates one end face of the bone of the affected area, and a kirschner wire is provided at an axis of the stepped hole on the bone of the affected area. When the bone supporting prosthesis other than the connection part 31 is implanted into the stepped hole of the bone of the affected area, the first escape through hole 24 and the second escape through hole 13 move along the kirschner wire to play a role of navigation and positioning so that the bone supporting prosthesis can be accurately introduced into the stepped hole. The k-wire is removed from the bone of the affected area, and the connecting portion 31 is fixedly connected to the bone of the affected area.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A bone supporting prosthesis comprising:
a fixed seat (10);
the support rod (20) is arranged in a floatable manner with the fixed seat (10) through an elastic piece (40), the support rod (20) penetrates out of the fixed seat (10), a supporting surface (21) of the support rod (20) protrudes out of the fixed seat (10), and the elastic piece (40) applies an elastic force to the support rod (20) in the direction of the supporting surface (21) of the support rod (20) so as to enable the support rod (20) to have a pressed state and a rebound state;
the fixing seat (10) comprises a guide rod part (12), the second end of the guide rod part (12) is positioned in the support rod (20), two ends of the elastic piece (40) are respectively abutted between the support rod (20) and the guide rod part (12), and the support rod (20) floats along the extending direction of the guide rod part (12);
the support rod (20) comprises a plurality of support petals (22), a plurality of support petals (22) encircle to form a circle, and each support petal (22) is arranged in a floating mode along the extending direction of the guide rod part (12) independently.
2. The bone supporting prosthesis according to claim 1, wherein the fixing base (10) further comprises a sleeve seat (11), a first end of the supporting rod (20) is connected in the sleeve seat (11), a second end of the supporting rod (20) penetrates through the sleeve seat (11), the supporting surface (21) protrudes out of the sleeve seat (11), a first end of the guiding rod portion (12) is connected in the sleeve seat (11), a second end of the guiding rod portion (12) penetrates through the sleeve seat (11), and the supporting surface (21) is an end face of the second end of the supporting rod (20).
3. Bone supporting prosthesis according to claim 2, characterized in that the supporting surface (21) comprises a plurality of segments of cambered surfaces connected in sequence.
4. A bone supporting prosthesis according to claim 3, characterized in that a plurality of said supporting petals (22) protrude from the end face of the fixed seat (10) to form a one-to-one correspondence of a plurality of said arcuate surfaces, each segment being sector-shaped.
5. A bone supporting prosthesis according to claim 3, characterized in that the first end of the supporting rod (20) is provided with a receiving groove (23) receiving the elastic member (40), the receiving groove (23) penetrating the end face of the first end of the supporting rod (20).
6. Bone supporting prosthesis according to claim 1, characterized in that a plurality of the supporting petals (22) enclose a circle to form a first avoidance through hole (24) in the middle thereof, the interior of the guiding rod portion (12) being provided with a second avoidance through hole (13) communicating with the first avoidance through hole (24).
7. The bone supporting prosthesis of claim 2, wherein the bone supporting prosthesis comprises,
the guide rod part (12) comprises a first rod section part (121) and a second rod section part (122) with the outer diameter larger than that of the first rod section part (121), a step surface (14) is formed between the first rod section part (121) and the second rod section part (122), the first rod section part (121) is arranged in the support rod (20) in a penetrating mode, the second rod section part (122) is located outside the first end of the support rod (20) far away from the second end of the support rod (20), and two ends of the elastic piece (40) are respectively abutted to the first end of the support rod (20) and the step surface (14).
8. Bone supporting prosthesis according to claim 2, characterized in that the first end of the guiding rod part (12) is connected in the first end of the sleeve holder (11), the first end of the supporting rod (20) is located between the first end of the guiding rod part (12) and the second end of the sleeve holder (11), the second end of the guiding rod part (12) extends out of the second end of the sleeve holder (11), the second end of the sleeve holder (11) is provided with a first stop ring (15), and the first end of the supporting rod (20) is provided with a second stop ring (25) in stop fit with the first stop ring (15).
9. Bone supporting prosthesis according to claim 2, characterized in that it further comprises a connecting piece (30) connected to the end of the holder (10) remote from the support surface (21), said connecting piece (30) being provided with a connecting portion (31) protruding outside the holder (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310167557.3A CN115998487B (en) | 2023-02-27 | 2023-02-27 | Bone supporting prosthesis |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310167557.3A CN115998487B (en) | 2023-02-27 | 2023-02-27 | Bone supporting prosthesis |
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| CN115998487A CN115998487A (en) | 2023-04-25 |
| CN115998487B true CN115998487B (en) | 2023-07-28 |
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| CN202310167557.3A Active CN115998487B (en) | 2023-02-27 | 2023-02-27 | Bone supporting prosthesis |
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| CN201814684U (en) * | 2010-07-14 | 2011-05-04 | 中国人民解放军第四军医大学 | Restoring device for early necrotic thighbones |
| RU110633U1 (en) * | 2011-05-31 | 2011-11-27 | Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Белгородский государственный национальный исследовательский университет" | DEVICE FOR FORMING MUCH-PERIODICAL FLAP AT DENTAL IMPLANTATION |
| CN113303952A (en) * | 2020-02-27 | 2021-08-27 | 北京纳通医学科技研究院有限公司 | Implanting device |
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| JP2010519985A (en) * | 2007-03-07 | 2010-06-10 | ウルリッヒ ゲーエムベーハー・アンド・カンパニー カーゲー | Intervertebral implant with elastic part |
| CN100594853C (en) * | 2008-05-16 | 2010-03-24 | 北京天新福医疗器材有限公司 | Metal bone support device for femoral head putrescence |
| CN101342100B (en) * | 2008-08-25 | 2010-10-13 | 中国人民解放军第二○八医院 | Inner support false body of femoral head |
| CN201668477U (en) * | 2009-12-30 | 2010-12-15 | 王飞 | Caput femoris core decompression device |
| CN102028566A (en) * | 2010-12-06 | 2011-04-27 | 北京畅想天行医疗技术有限公司 | Inner supporting frame for femoral head |
| CN111419478A (en) * | 2020-04-30 | 2020-07-17 | 四川大学华西医院 | Adjustable self-stress stimulation bone titanium mesh |
| CN213963773U (en) * | 2020-11-20 | 2021-08-17 | 北京爱康宜诚医疗器材有限公司 | Intramedullary fusion device and femoral prosthesis component with same |
| CN112773568B (en) * | 2020-12-30 | 2023-11-28 | 北京市春立正达医疗器械股份有限公司 | 3D printed bone connecting rod system |
| CN112674912B (en) * | 2020-12-30 | 2022-04-12 | 北京爱康宜诚医疗器材有限公司 | Long bone lengthening prosthesis |
| CN112773573B (en) * | 2021-02-10 | 2022-05-03 | 北京爱康宜诚医疗器材有限公司 | Inner support prosthesis for femoral head |
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| CN201814684U (en) * | 2010-07-14 | 2011-05-04 | 中国人民解放军第四军医大学 | Restoring device for early necrotic thighbones |
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