CN113384334B - Femoral head supporting structure - Google Patents
Femoral head supporting structure Download PDFInfo
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- CN113384334B CN113384334B CN202110811833.6A CN202110811833A CN113384334B CN 113384334 B CN113384334 B CN 113384334B CN 202110811833 A CN202110811833 A CN 202110811833A CN 113384334 B CN113384334 B CN 113384334B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/74—Devices for the head or neck or trochanter of the femur
- A61B17/742—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M31/00—Devices for introducing or retaining media, e.g. remedies, in cavities of the body
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Abstract
The invention provides a femoral head supporting structure, and relates to the technical field of medical instruments. The femoral head support structure comprises a main support rod, a drive ring, a sliding ring and a support umbrella rib; the lower part of the outer wall of the main support rod is provided with external threads; the driving ring is connected to the main support rod in a threaded manner, and the sliding ring is sleeved on the main support rod in a hollow manner; one end of the supporting umbrella rib is hinged with the top of the main supporting rod, and the middle part of the supporting umbrella rib is hinged with the sliding ring through a connecting rod; the driving ring can push the sliding ring to move along the length direction of the main support rod so as to open or close the support umbrella ribs; the main support rod is provided with a first injection channel which runs through two ends of the main support rod along the length direction of the main support rod, so that the technical effect of preventing the collapse of the femoral head is achieved.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a femoral head supporting structure.
Background
Femoral head necrosis is a common osteoarticular disease. By 2017, 812 million people have been diagnosed in china, with an average of 1.4 million new cases per year in korea, 2 million/year in the united states, and 20 million/year in china. The prevalence rate of femoral head necrosis in China is divided into 11.76/ten thousand of farmers in plain, 9.57/ten thousand of urban residents, 7.92/ten thousand of workers, 6.29/ten thousand of farmers in mountainous areas and 5.531/ten thousand of coastal fishermen. Most of the patients in the age of 35-55 years old are not treated in time, and 80% of the patients have femoral head collapse, and need hip arthroplasty (THA) after 3-4 years.
The current treatment method is mainly to perform hip replacement after the femoral head necrosis is in 3 or 4 stages. For stage 1, stage 2 femoral head necrosis, no mature surgery or instrumentation is available for treatment, particularly early stages of femoral head necrosis, and the stage in which the femoral head has not collapsed is not accessible, resulting in collapse of the femoral head of the patient.
Therefore, it is an important technical problem to be solved by those skilled in the art to provide a femoral head support structure that prevents collapse of the femoral head.
Disclosure of Invention
The invention aims to provide a femoral head support structure to solve the technical problem that the femoral head of a patient with femoral head necrosis is easy to collapse in the early stage in the prior art.
In a first aspect, embodiments of the present invention provide a femoral head support structure, comprising a main support rod, a drive ring, a sliding ring, and support ribs;
the lower part of the outer wall of the main support rod is provided with an external thread;
the driving ring is in threaded connection with the main support rod, and the sliding ring is sleeved on the main support rod;
one end of the supporting umbrella rib is hinged with the top of the main supporting rod, and the middle part of the supporting umbrella rib is hinged with the sliding ring through a connecting rod;
the driving ring can push the sliding ring to move along the length direction of the main support rod so as to expand or contract the support ribs;
the main supporting rod is provided with a first injection channel which penetrates through two ends of the main supporting rod along the length direction of the main supporting rod.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the supporting ribs include a plurality of rib rods;
one end of each umbrella rib rod is hinged with the top of the main support rod, and the middle of each umbrella rib rod is hinged with the sliding ring through the connecting rod.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein a fixing nail is disposed on a top of the main support rod, and the fixing nail is connected to the main support rod;
the outer wall of the fixing nail is provided with an external thread which can be connected with the femoral head of a patient;
a drainage channel is formed in the fixing nail and communicated with the first injection channel, so that the medicine in the first injection channel enters the femoral head of a patient through the drainage channel.
In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the fixing nail is screwed with the main supporting rod.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the driving ring includes a connecting portion and a driving portion;
the connecting part and the driving part are of an integrated structure, and the driving part is positioned above the connecting part;
the inner wall of the connecting part is provided with internal threads, and the connecting part is in threaded connection with the main support rod;
the driving part is sleeved on the main supporting rod in an empty mode.
With reference to the first aspect, embodiments of the present invention provide a possible implementation manner of the first aspect, wherein the femoral head support structure further includes an auxiliary support rod;
the auxiliary supporting rod is in threaded connection with the main supporting rod;
the auxiliary supporting rod is provided with a second injection channel penetrating through two ends of the auxiliary supporting rod along the length direction of the auxiliary supporting rod;
the second injection passage communicates with the first injection passage.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein an outer wall of the auxiliary supporting rod is provided with an external thread capable of being connected to a femoral head of a patient.
With reference to the first aspect, embodiments of the present invention provide a possible implementation manner of the first aspect, wherein the femoral head support structure further includes a support plate;
the supporting plate is connected with the tail end of the auxiliary supporting rod.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein a clamping groove is formed at a tail end of the auxiliary supporting rod, and a clamping block adapted to the clamping groove is arranged on the supporting plate.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein a limit table for limiting an upward movement range of the sliding ring is disposed on the main support rod.
Has the advantages that:
the embodiment of the invention provides a femoral head supporting structure, which comprises a main supporting rod, a driving ring, a sliding ring and supporting umbrella ribs, wherein the main supporting rod is fixedly connected with the driving ring; the lower part of the outer wall of the main support rod is provided with external threads; the driving ring is connected to the main support rod in a threaded manner, and the sliding ring is sleeved on the main support rod in a hollow manner; one end of the supporting umbrella rib is hinged with the top of the main supporting rod, and the middle part of the supporting umbrella rib is hinged with the sliding ring through a connecting rod; the driving ring can push the sliding ring to move along the length direction of the main support rod so as to open or close the support umbrella ribs; the main support rod is provided with a first injection channel which runs through two ends of the main support rod along the length direction.
When the medical femoral head injection device is used specifically, medical staff firstly performs preparation work such as hole opening on the femur of a patient, then a femoral head support structure is placed in a hole in the femur of the patient through an orthopedic tool, then the medical staff pushes a main support rod through the orthopedic tool, under the assistance of a fluoroscope, the main support rod is moved to a set position, then the medical staff rotates a driving ring through the orthopedic tool, the driving ring pushes a sliding ring to move towards the top end of a column support rod, so that a support rib is unfolded, the support rib can support the femoral head of the patient, then the medical staff can inject medicine which is beneficial to rehabilitation through the femoral head of the patient in a first injection channel, through the arrangement, the necrotic femoral head of the patient can be supported, and the collapse of the femoral head is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic view of a femoral head support structure provided in accordance with an embodiment of the present invention when deployed (fixation pins not shown);
fig. 2 is a schematic structural view of a collapsed femoral head support structure provided in accordance with an embodiment of the present invention (the fixation pins are not shown);
FIG. 3 is a cross-sectional view A-A of FIG. 2;
fig. 4 is a bottom view of a collapsed femoral head support structure provided in accordance with an embodiment of the present invention;
fig. 5 is a cross-sectional view of a collapsed femoral head support structure provided in accordance with an embodiment of the present invention;
fig. 6 is a schematic view of a driving ring in a femoral head support structure according to an embodiment of the present invention;
fig. 7 is a schematic view of a femoral head support structure provided in accordance with an embodiment of the present invention in use.
Icon:
100-a main support bar; 110 — a first injection channel;
200-drive ring; 210-a connecting portion; 211-rotating slot; 220-a drive section;
300-a slip ring;
400-support ribs; 410-umbrella rib rod; 420-a connecting rod;
500-fixing nails; 510-a bleed flow channel;
600-auxiliary support rods; 610-a second injection channel; 620-card slot;
700-a support plate;
800-femoral head.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Referring to fig. 1, 2, 3, 4, 5, 6 and 7, an embodiment of the present invention provides a femoral head support structure including a main support rod 100, a drive ring 200, a sliding ring 300 and support ribs 400; the lower part of the outer wall of the main support bar 100 is provided with external threads; the driving ring 200 is screwed on the main supporting rod 100, and the sliding ring 300 is sleeved on the main supporting rod 100; one end of the support rib 400 is hinged with the top of the main support bar 100, and the middle of the support rib 400 is hinged with the sliding ring 300 through the connecting bar 420; the sliding ring 300 is positioned above the driving ring 200, and the driving ring 200 can push the sliding ring 300 to move along the length direction of the main support rod 100, so that the support ribs 400 can be expanded or contracted; the main support bar 100 is provided with a first injection passage 110 along the length direction thereof, which penetrates through both ends of the main support bar 100.
When the medical bone injection device is used specifically, a medical staff firstly performs preparation work such as hole opening on the femur of a patient, then the femoral head support structure is placed in a hole on the femur of the patient through an orthopedic tool, then the medical staff pushes the main support rod 100 through the orthopedic tool, under the assistance of a fluoroscope, the main support rod 100 is moved to a set position, then the medical staff rotates the driving ring 200 through the orthopedic tool, the sliding ring 300 is pushed to move towards the top end of the column support rod through the driving ring 200, so that the support rib 400 is unfolded, the support rib 400 can support the femoral head 800 of the patient, then the medical staff can inject medicine which is helpful for rehabilitation through the femoral head of the patient in the first injection channel 110, and through the arrangement, the femoral head 800 which is necrotic of the patient can be supported, and the collapse of the femoral head 800 of the patient is avoided.
Here, the top of the main support bar 100 means an end which is first inserted into the femur of the patient, i.e., an end in the advancing direction of the main support bar 100 during the operation.
One end of the support rib 400 is hinged to the top of the main support rod 100, and the other end is hinged to the sliding ring 300 through the connecting rod 420, so that when the sliding ring 300 reciprocates along the length direction of the main support rod 100, the sliding ring 300 can drive the support rib 400 to perform an unfolding or folding action.
It should be noted that the support ribs 400, the main support rods 100, the drive ring 200 and the sliding ring 300 may be provided with a coating layer for facilitating bone growth, and those skilled in the art may provide different coating layers according to actual needs as long as bone growth is facilitated.
Referring to fig. 1-7, in an alternative version of this embodiment, support rib 400 comprises a plurality of rib rods 410; one end of each of the umbrella rib rods 410 is hinged to the top of the main support rod 100, and the middle of each of the umbrella rib rods 410 is hinged to the sliding ring 300 by a connecting rod 420.
Specifically, the support rib 400 includes a plurality of rib bars 410, and one end of each rib bar 410 is hinged to the top of the main support bar 100, and the other end is hinged to the sliding ring 300 through a connecting bar 420.
Referring to fig. 1 to 7, in an alternative of the present embodiment, a fixing pin 500 is provided on the top of the main support bar 100, and the fixing pin 500 is connected to the main support bar 100; the outer wall of the fixing nail 500 is provided with an external thread which can be connected with the femoral head 800 of the patient; the staple 500 has a vent channel 510 formed therein, and the vent channel 510 is communicated with the first injection channel 110, so that the medicine in the first injection channel 110 can enter the interior of the femoral head 800 of the patient through the vent channel 510.
Specifically, a fixing nail 500 is provided on the top of the main support bar 100, and after the main support bar 100 is inserted into the femur of the patient, the medical staff may fix the main support bar 100 by rotating the main support bar 100 such that the fixing nail 500 on the top of the main support bar 100 is screwed into the bone of the patient.
Specifically, the fixing pin 500 is provided with a drainage channel 510, and the drainage channel 510 is communicated with the first injection channel 110, so that during the operation, medical staff can inject medicine or substance beneficial to rehabilitation into the femoral head 800 of the patient.
Referring to fig. 1-7, in an alternative to this embodiment, a staple 500 is threadably coupled to the main support bar 100.
Specifically, the fixing band and the main support bar 100 may be connected together by a screw connection.
Referring to fig. 1-7, in an alternative to the present embodiment, the drive ring 200 includes a connecting portion 210 and a drive portion 220; the connecting part 210 and the driving part 220 are of an integrated structure, and the driving part 220 is positioned above the connecting part 210; the inner wall of the connecting part 210 is provided with internal threads, and the connecting part 210 is in threaded connection with the main support rod 100; the driving part 220 is idly fitted over the main support bar 100.
Specifically, the connecting portion 210 is provided with a rotating groove 211 for allowing a medical staff to rotate the connecting portion 210, and the rotating groove 211 is disposed at an end of the connecting portion 210 away from the driving portion 220.
The driving part 220 and the connecting part 210 are of an integral structure, when the medical staff rotates the connecting part 210, the driving part 220 can synchronously rotate, the driving part 220 can ascend along the length direction of the main support rod 100, so that the driving part 220 abuts against the sliding ring 300, and the driving part 220 can push the sliding ring 300 to move towards the top end of the main support rod 100, so that the support rib 400 is spread.
Referring to fig. 1-7, in an alternative version of this embodiment, the femoral head support structure further includes an auxiliary support rod 600; the auxiliary support bar 600 is in threaded connection with the main support bar 100; the auxiliary supporting rod 600 is provided with a second injection channel 610 penetrating through two ends of the auxiliary supporting rod 600 along the length direction thereof; the second injection passage 610 communicates with the first injection passage 110.
Specifically, by providing the auxiliary support bar 600, the support stability of the main support bar 100 is further improved.
Wherein, the inner wall of the end of the auxiliary support bar 600 connected with the main support bar 100 is provided with an internal thread, and the auxiliary support bar 600 is in threaded connection with the main support bar 100.
And, the auxiliary supporting rod 600 is provided with a second injection channel 610, and the first injection channel 110 is communicated with the second injection channel 610, so that the medical staff can conveniently operate to inject the medicine beneficial to bone growth into the femoral head 800 of the patient.
Referring to fig. 1 to 7, in an alternative embodiment of the present invention, the outer wall of the auxiliary support rod 600 is provided with an external thread capable of being connected to the femoral head 800 of the patient.
Specifically, an external thread may be formed on the outer wall of the auxiliary support rod 600, so that the auxiliary support rod 600 is connected to the femur, thereby improving stability.
Referring to fig. 1-7, in an alternative version of this embodiment, the femoral head support structure further includes a support plate 700; the supporting plate 700 is connected to the rear end of the auxiliary supporting rod 600.
Specifically, still include the backup pad 700, the backup pad 700 passes through the fix with screw on patient's thighbone, and the top of backup pad 700 can be connected with the auxiliary support pole 600 to support the auxiliary support pole 600, improve the stability of duplicating the backup pad 700.
The support plate 700 may be a support steel plate.
Referring to fig. 1 to 7, in an alternative of this embodiment, a clamping groove 620 is formed at a tail end of the auxiliary supporting rod 600, and a clamping block adapted to the clamping groove 620 is disposed on the supporting plate 700.
Specifically, the tail end of the auxiliary support rod 600 is provided with the clamping groove 620, the supporting plate 700 is provided with the clamping block, and when the supporting plate 700 is connected with the auxiliary support rod 600, the clamping groove 620 is matched with the clamping block, so that the auxiliary support rod 600 and the supporting plate 700 are prevented from moving, and the stability of the structure is further improved.
Referring to fig. 1 to 7, in an alternative of the present embodiment, a limit table for limiting an upward moving range of the slide ring 300 is provided on the main support bar 100.
Specifically, a limit table can be arranged on the main support rod 100, and through the arrangement of the limit table, the external threads of the outer wall of the drive ring 200 and the outer wall of the main support rod 100 can be prevented from being separated, and the support rib 400 can be prevented from being excessively supported to be large, so that the structural stability of the support rib 400 is ensured.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. A femoral head support structure, comprising: a main support rod (100), a drive ring (200), a sliding ring (300) and a support rib (400);
the lower part of the outer wall of the main support rod (100) is provided with an external thread;
the driving ring (200) is in threaded connection with the main support rod (100), and the sliding ring (300) is sleeved on the main support rod (100) in an empty way;
one end of the supporting umbrella rib (400) is hinged with the top of the main supporting rod (100), and the middle part of the supporting umbrella rib (400) is hinged with the sliding ring (300) through a connecting rod (420);
the sliding ring (300) is positioned above the driving ring (200), and the driving ring (200) can push the sliding ring (300) to move along the length direction of the main support rod (100) so as to open or close the support umbrella ribs (400);
the main support rod (100) is provided with a first injection channel (110) which penetrates through two ends of the main support rod (100) along the length direction of the main support rod;
a fixing nail (500) is arranged at the top of the main support rod (100), and the fixing nail (500) is connected with the main support rod (100); the outer wall of the fixing nail (500) is provided with an external thread which can be connected with the femoral head (800) of a patient; a drainage channel (510) is formed in the fixing nail (500), the drainage channel (510) is communicated with the first injection channel (110), so that the medicine in the first injection channel (110) enters the interior of the femoral head (800) of the patient through the drainage channel (510);
also comprises an auxiliary supporting rod (600);
the auxiliary supporting rod (600) is in threaded connection with the main supporting rod (100);
a second injection channel (610) penetrating through two ends of the auxiliary supporting rod (600) is formed in the auxiliary supporting rod (600) along the length direction of the auxiliary supporting rod;
the second injection passage (610) communicates with the first injection passage (110);
further comprising a support plate (700);
the supporting plate (700) is connected with the tail end of the auxiliary supporting rod (600).
2. The femoral head support structure according to claim 1, wherein the support rib (400) comprises a plurality of rib rods (410);
one end of each umbrella bone rod (410) is hinged with the top of the main support rod (100), and the middle of each umbrella bone rod (410) is hinged with the sliding ring (300) through the connecting rod (420).
3. The femoral head support structure according to claim 2, characterized in that the fixation nail (500) is threadedly connected with the main support rod (100).
4. The femoral head support structure according to claim 2, wherein the drive ring (200) comprises a connection portion (210) and a drive portion (220);
the connecting part (210) and the driving part (220) are of an integrated structure, and the driving part (220) is positioned above the connecting part (210);
the inner wall of the connecting part (210) is provided with internal threads, and the connecting part (210) is in threaded connection with the main support rod (100);
the driving part (220) is sleeved on the main supporting rod (100) in an empty way.
5. The femoral head support structure according to claim 4, wherein the outer wall of the auxiliary support rod (600) is externally threaded to enable connection with a femoral head (800) of a patient.
6. The femoral head support structure according to claim 5, wherein a slot (620) is formed at the tail end of the auxiliary support rod (600), and a clamping block adapted to the slot (620) is arranged on the support plate (700).
7. The femoral head support structure according to any one of claims 1 to 4, wherein a limit stop is provided on the main support bar (100) for limiting the upward range of movement of the slip ring (300).
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| CN202110811833.6A CN113384334B (en) | 2021-07-19 | 2021-07-19 | Femoral head supporting structure |
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| CN202110811833.6A CN113384334B (en) | 2021-07-19 | 2021-07-19 | Femoral head supporting structure |
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| CN113384334B true CN113384334B (en) | 2022-08-02 |
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| CN114259288B (en) * | 2021-12-30 | 2024-04-16 | 孙秀钦 | Internal bracing type fixing device for fracture of femoral neck |
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| WO1998002105A1 (en) * | 1996-07-17 | 1998-01-22 | Bramlet Dale G | Surgical fastener assembly |
| CN202665751U (en) * | 2012-07-13 | 2013-01-16 | 中南大学湘雅医院 | Supporter for treating ONFH (osteonecrosis of the femoral head) |
| TW201709875A (en) * | 2015-09-01 | 2017-03-16 | Pao Nan Biotech Co Ltd | Femoral head supporting device enabling the articular cartilage surface to obtain effective support to avoid collapsing, thereby enhancing success rate of bone reconstruction surgery |
| CN112773494A (en) * | 2021-01-28 | 2021-05-11 | 广州市妇女儿童医疗中心 | Hollow nail for improving femoral head blood circulation |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7217283B2 (en) * | 2004-12-30 | 2007-05-15 | Depuy Products, Inc. | Orthopaedic implant for vascularization of the femoral head |
| CN201920878U (en) * | 2011-01-25 | 2011-08-10 | 广州医学院第二附属医院 | Caput femoris support frame |
| CA2827235A1 (en) * | 2011-02-14 | 2012-08-23 | The Royal Institution For The Advancement Of Learning / Mcgill Universit Y | Systems and methods for injecting fluid into bone and for inserting bone screws, and bone screws for same |
| TWI572321B (en) * | 2016-08-23 | 2017-03-01 | 財團法人金屬工業研究發展中心 | Femur supporting device |
| CN111821008A (en) * | 2020-08-08 | 2020-10-27 | 张燕 | Bone nail containing bone inducing material coating and spine fixing device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998002105A1 (en) * | 1996-07-17 | 1998-01-22 | Bramlet Dale G | Surgical fastener assembly |
| CN202665751U (en) * | 2012-07-13 | 2013-01-16 | 中南大学湘雅医院 | Supporter for treating ONFH (osteonecrosis of the femoral head) |
| TW201709875A (en) * | 2015-09-01 | 2017-03-16 | Pao Nan Biotech Co Ltd | Femoral head supporting device enabling the articular cartilage surface to obtain effective support to avoid collapsing, thereby enhancing success rate of bone reconstruction surgery |
| CN112773494A (en) * | 2021-01-28 | 2021-05-11 | 广州市妇女儿童医疗中心 | Hollow nail for improving femoral head blood circulation |
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