CN117137691B - Tibia extension rod eccentric adjusting instrument - Google Patents
Tibia extension rod eccentric adjusting instrument Download PDFInfo
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- CN117137691B CN117137691B CN202311163867.4A CN202311163867A CN117137691B CN 117137691 B CN117137691 B CN 117137691B CN 202311163867 A CN202311163867 A CN 202311163867A CN 117137691 B CN117137691 B CN 117137691B
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- groove
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- 210000002303 tibia Anatomy 0.000 title claims abstract description 49
- 230000000694 effects Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 210000000988 bone and bone Anatomy 0.000 description 5
- 230000007547 defect Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 208000015181 infectious disease Diseases 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 210000004439 collateral ligament Anatomy 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 210000000281 joint capsule Anatomy 0.000 description 2
- 210000003127 knee Anatomy 0.000 description 2
- 210000003141 lower extremity Anatomy 0.000 description 2
- 206010058314 Dysplasia Diseases 0.000 description 1
- 206010062575 Muscle contracture Diseases 0.000 description 1
- 206010061363 Skeletal injury Diseases 0.000 description 1
- 208000026137 Soft tissue injury Diseases 0.000 description 1
- 241001227561 Valgus Species 0.000 description 1
- 230000003872 anastomosis Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000037182 bone density Effects 0.000 description 1
- 208000006111 contracture Diseases 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 201000008482 osteoarthritis Diseases 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 206010039073 rheumatoid arthritis Diseases 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/38—Joints for elbows or knees
- A61F2/389—Tibial components
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
- A61F2002/3055—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting length
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Veterinary Medicine (AREA)
- Cardiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Physical Education & Sports Medicine (AREA)
- Prostheses (AREA)
Abstract
The invention belongs to the technical field of tibia extension rods, and particularly relates to an eccentric adjusting device for a tibia extension rod, which comprises an eccentric rod, wherein a connecting cylinder is fixedly arranged in the middle of the top surface of the eccentric rod, a supporting platform is movably sleeved on the outer side of the connecting cylinder, the supporting platform comprises an adjusting end, an adjusting hole is formed in the middle of the adjusting end, a rotating groove is formed in the top of the adjusting hole, an adjusting component is movably clamped on the inner side of the rotating groove, and the adjusting component comprises an adjusting screw, a rotating plate, an operating groove, a connecting ring and a limiting ring. When the tibia operation device is used for performing the tibia operation again on the patient, the rotating plate can be rotated through the screwing tool, so that the position of the adjusting screw rod on the inner side of the connecting cylinder is adjusted, the position of the outer supporting platform is adjusted, the length of the whole eccentric extension rod is adjusted conveniently, the supporting platform is not required to be adjusted during adjustment, the condition that the supporting platform needs to be adjusted again due to deflection of the eccentric extension rod in the follow-up process is avoided, and the operation efficiency is improved.
Description
Technical Field
The invention relates to the technical field of tibia eccentric rods, in particular to an eccentric adjusting instrument for a tibia extension rod.
Background
Serious knee valgus deformity is liable to occur with long-term osteoarthritis and rheumatoid arthritis, and can cause bone injury and soft tissue injury, such as posterior lateral bone defect of femoral external condyle, external condyle dysplasia, internal rotation of tibia, lateral collateral ligament, iliotibial band, contracture of lateral structures such as posterior lateral articular capsule, or relaxation of lateral collateral ligament and articular capsule. The aim of correction is often not achieved by soft tissue loosening balance alone, and good force line correction can be obtained by the development of joint prostheses and the progress of surgical techniques. Currently, post-stability prostheses and extension rods are widely used clinically. The high buckling mobility of the posterior stabilized prosthesis is well recognized, and the posterior stabilized conventional prosthesis has the advantages of high anastomosis with the joint surface, maximum contact surface, locking for preventing inching, firm accessory fixation and the like, so that the posterior stabilized prosthesis has better postoperative joint mobility, which is also the most important reason for the clinical application at present. The extension rod has the advantages of reducing the pressure load of tibia, reducing inching and increasing stability, and has the defects of reduced bone density, subsidence, looseness, fracture around the prosthesis and distal pain caused by related stress shielding, and the extension rod with fixed length has a plurality of inconveniences during operation repair, and if the extension rod needs to be replaced, the cost of operation materials is increased, so that the economic burden of a patient is increased. Meanwhile, the bone defect degree of the patient exposed in the operation is often inconsistent with the bone defect degree of the preoperative imaging examination, under the condition, the prosthesis is often not matched with the bone of the patient, the bone defect problem of the patient after the operation is not completely solved, and complex sequelae with inconsistent lengths of the two lower limbs are easy to appear.
In chinese patent publication No. (CN 112603605A) a double-acting knee prosthesis is disclosed, which consists of a double-acting half-knee femoral prosthesis and a tibial straight/eccentric extension rod, the double-acting half-knee femoral prosthesis consists of a double-acting half-knee femoral prosthesis and a tibial straight/eccentric extension rod, and the double-acting half-knee femoral prosthesis can meet the needs of different patients by adjusting the insertion length of the femoral intramedullary nail. The extension rod in the tibia straight/eccentric extension rod has rotary scalability, and the length of the extension rod can be reasonably adjusted according to the diameter of a patient's medullary cavity and the length of a reserved tibia, so that the effects of high filling rate and perfect tibia femur angle are achieved. The extension rod can be adjusted in a telescopic way according to the illness state of the patient during the secondary operation, so that the length of the two lower limbs of the patient is consistent, the loosening of the prosthesis is reduced, the deep infection is inhibited, and the repairing probability of all the prostheses is reduced.
The main technical points of the scheme are that an eccentric extension rod and an intramedullary nail with adjustable length are connected with a threaded cylinder through a threaded rod, and a connecting part is rotated to adjust during operation; when the length of the eccentric extension rod is required to be adjusted in actual use, the tibial plateau at the top of the extension rod is required to be correspondingly rotated, and the shape of the tibial plateau is correspondingly arranged with the patient's tibia, and is not regularly and uniformly arranged, so that when the tibia plateau is rotated to adjust the eccentric extension rod, medical staff correspondingly changes the eccentric angle of the extension rod due to the change of the orientation of the tibial plateau, the eccentric extension rod is easy to be mismatched with the patient's tibia, the appearance and the position of the tibial plateau are required to be adjusted again in later period, the operation efficiency is influenced, and the pain of the patient is increased; and through threaded connection's mode, owing to adopt metal parts more, structural connection is in and bears the stress effect for a long time, takes place deformation easily, leads to threaded connection difficult dismouting, and the circumstances that metal fragments caused the infection appear even wearing and tearing.
Therefore, a tibia extension rod eccentric adjusting device with convenient adjustment and strong stability is needed.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a tibia extension rod eccentric adjusting device which has the characteristics of convenient adjustment and strong stability, when the tibia extension rod of a patient is subjected to a tibia eccentric extension rod operation, and the length of the tibia extension rod of the patient is required to be adjusted, a connecting cylinder with internal threads and an adjusting component are additionally arranged between the eccentric rod and a tibia supporting platform, the connecting cylinder with the internal threads is additionally arranged at the top of the eccentric rod, a rotating plate of the adjusting component is movably clamped at the top of the supporting platform, an adjusting screw is arranged at the bottom of the rotating plate, the adjusting screw is in threaded connection with the connecting cylinder, and when a medical staff performs a secondary operation on the patient, the rotating plate can rotate to drive a supporting platform to move through the rotation of the adjusting screw on the inner side of the connecting cylinder, so that the adjustment of the length of the tibia extension rod can be performed without rotating the supporting platform, the adjustment is convenient, the tibia supporting platform is not required to be adjusted subsequently, and the operation efficiency is improved.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a shin extension rod eccentric adjustment apparatus, includes eccentric rod, eccentric rod's top surface middle part is fixed to be equipped with the connecting cylinder, the outside activity of connecting cylinder has cup jointed supporting platform, supporting platform includes adjustment end, supporting component and supporting cover, the fixed joint in top outside of adjustment end is equipped with the supporting cover, the regulation hole has been seted up at the middle part of adjustment end, the connecting cylinder activity cup joints the inboard at the regulation hole, the supporting groove has been seted up to the regulation hole periphery, the fixed supporting component that is equipped with in inboard of supporting groove, the rotation groove has been seted up at the top of regulation hole, the limit groove has been seted up to the inboard bottom surface of rotation groove, the inboard movable joint of rotation groove is equipped with adjusting component, adjusting component includes adjusting screw, rotating plate, operation groove, go-between and limit ring, adjusting screw is located the inboard of adjustment hole, the lower extreme threaded connection of adjusting screw is in the inboard of connecting cylinder, the fixed rotating plate movable joint in top of adjusting screw is equipped with the rotating groove, the operation groove has been seted up in the top surface middle part of rotating plate, the bottom surface of rotating plate is fixed to be equipped with the limit ring, the fixed joint limit ring is equipped with in the limit groove bottom of the fixed joint.
As an optimized technical scheme of the tibia extension rod eccentric adjusting instrument, the inner side of the connecting cylinder is provided with the threaded hole, the lower end of the adjusting screw is in threaded connection with the inner side of the threaded hole, and the outer wall of the connecting cylinder is provided with the plurality of sliding grooves.
As an optimized technical scheme of the tibia extension rod eccentric adjusting device, a plurality of sliding rods are fixedly arranged on the inner wall of the adjusting hole, and the sliding rods are movably clamped with the sliding grooves.
As a preferable technical scheme of the tibia extension rod eccentric adjusting device, the supporting assembly comprises a supporting spring and a supporting washer, wherein the supporting spring is fixed on the inner side of the supporting groove, and the supporting washer is fixedly arranged at the bottom of the supporting spring.
As an optimized technical scheme of the tibia extension rod eccentric adjusting instrument, the top surface edge of the eccentric rod is fixedly provided with the supporting cylinder, the supporting cylinder is positioned at the outer side of the connecting cylinder, the supporting cylinder is movably sleeved at the inner side of the supporting groove, and the supporting cylinder is positioned below the supporting gasket.
As an optimized technical scheme of the tibia extension rod eccentric adjusting instrument, the eccentric rod comprises an extension rod, an eccentric end is fixedly arranged at the top of the extension rod, and a fixing hole is formed in the extension rod.
As a preferable technical scheme of the tibia extension rod eccentric adjusting device, the adjusting screw is fixed in the middle of the top surface of the eccentric end, and the supporting cylinder is fixed at the edge of the top surface of the eccentric end.
As an optimal technical scheme of the tibia extension rod eccentric adjusting instrument, a thread groove is formed in the edge of the top surface of the adjusting end.
As an optimized technical scheme of the tibia extension rod eccentric adjusting device, the top surface edge of the supporting cover is provided with the fixing groove, the inner side of the fixing groove is movably clamped with the fixing nail, the fixing groove is positioned above the thread groove, and the lower end of the fixing nail is in threaded connection with the inner side of the thread groove.
As an optimized technical scheme of the tibia extension rod eccentric adjusting device, an operation hole is formed in the middle of the top surface of the supporting cover, and the operation hole is located above the operation groove.
Compared with the prior art, the invention has the beneficial effects that:
In the using process, the connecting cylinder and the adjusting component are arranged at the top of the tibia eccentric extension rod, the connecting cylinder is a threaded cylinder with internal threads, the outer wall of the threaded cylinder is provided with the sliding groove, the middle part of the supporting platform is provided with the adjusting hole, the inner wall of the adjusting hole is provided with the sliding rod, the eccentric extension rod and the tibia supporting platform are limited by the clamping of the sliding rod and the sliding groove, the supporting platform is movably clamped with the rotating plate of the adjusting component, the adjusting screw is arranged at the bottom of the rotating plate and is in threaded connection with the connecting cylinder, when a medical staff performs a secondary operation on the tibia of a patient, the rotating plate can be rotated by a screwing tool, so that the adjusting screw rotates at the inner side of the connecting cylinder, the position of the adjusting screw at the inner side of the connecting cylinder is adjusted, the position of the outer supporting platform and the connecting cylinder can be adjusted due to the fact that the position of the tibia eccentric extension rod is fixed during adjustment, the length of the whole eccentric extension rod is adjusted, the adjustment is convenient, and the supporting platform is not required to be adjusted during adjustment, the supporting platform is prevented from being inclined after the position and angle change, the subsequent eccentric extension rod is caused, the medical staff needs to adjust the supporting platform again, and the pain is caused when the patient needs to adjust the supporting platform to be adjusted again, and the operation efficiency is improved;
and through the supporting component and the supporting cylinder that set up, the inboard at supporting platform sets up the supporting groove, the inboard in supporting groove sets up supporting component, set up the supporting cylinder at the top of eccentric extension rod, when being connected supporting platform and eccentric extension rod through adjusting screw, the inboard in supporting groove is blocked to the supporting cylinder, make it support in the supporting component below, thereby when supporting patient's shin bone through eccentric extension rod and supporting platform, carry out auxiliary stay to supporting platform through supporting cylinder and supporting component, avoid the connection structure between supporting platform and the eccentric extension rod to lead to the screw thread to warp or produce the condition of metal chip because of bearing the stress too big, improve the stability that eccentric extension rod used, improve its practicality.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a perspective cross-sectional view of the present invention;
FIG. 3 is a schematic perspective view of an eccentric extension rod of the present invention;
FIG. 4 is an enlarged schematic view of the invention at A in FIG. 3;
FIG. 5 is a perspective cross-sectional view of a support platform of the present invention;
fig. 6 is a perspective cross-sectional view of an adjustment assembly of the present invention.
In the figure: 1. an eccentric rod; 11. an extension rod; 111. a fixing hole; 12. an eccentric end; 13. a connecting cylinder; 131. a threaded hole; 132. a chute; 14. a support cylinder; 2. a support platform; 21. an adjustment end; 211. an adjustment aperture; 212. a slide bar; 213. a support groove; 214. a rotating groove; 215. a limit groove; 216. a thread groove; 22. a support assembly; 221. a support spring; 222. a support washer; 23. a support cover; 231. a fixing groove; 232. fixing nails; 233. an operation hole; 3. an adjustment assembly; 31. adjusting a screw; 32. a rotating plate; 33. an operation groove; 34. a connecting ring; 35. and a limiting ring.
Description of the embodiments
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. 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.
In order to make the person skilled in the art better understand the solution of the present invention, the technical solution of the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
It should be noted that, under the condition of no conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.
Examples
Referring to fig. 1-5, the present invention provides the following technical solutions: the utility model provides a shin extension rod eccentric adjustment apparatus, includes eccentric rod 1, and eccentric rod 1 includes extension rod 11, and the fixed eccentric end 12 that is equipped with in top of extension rod 11, has seted up fixed orifices 111 on the extension rod 11.
Referring to fig. 2, fig. 4, fig. 5 and fig. 6, concretely, the middle part of the top surface of the eccentric rod 1 is fixedly provided with a connecting cylinder 13, the outside of the connecting cylinder 13 is movably sleeved with a supporting platform 2, the supporting platform 2 comprises an adjusting end 21, a supporting component 22 and a supporting cover 23, the top outer side of the adjusting end 21 is fixedly clamped with the supporting cover 23, the middle part of the adjusting end 21 is provided with an adjusting hole 211, the connecting cylinder 13 is movably sleeved on the inner side of the adjusting hole 211, the periphery of the adjusting hole 211 is provided with a supporting groove 213, the inner side of the supporting groove 213 is fixedly provided with the supporting component 22, the top of the adjusting hole 211 is provided with a rotating groove 214, the inner side bottom surface of the rotating groove 214 is provided with a limiting groove 215, the inner side of the rotating groove 214 is movably clamped with an adjusting component 3, the adjusting component 3 comprises an adjusting screw 31, a rotating plate 32, an operating groove 33, a connecting ring 34 and a limiting ring 35, the lower end of the adjusting screw 31 is connected on the inner side of the connecting cylinder 13 by threads, the top of the adjusting screw 31 is fixedly provided with a rotating plate 32, the rotating plate 32 is movably clamped on the inner side of the rotating plate 32, the middle part of the rotating plate 32 is provided with the limiting groove 215, the rotating plate is conveniently connected with the rotating plate 33 by the rotating plate 33, the rotating plate 33 is movably clamped with the limiting ring 35, the rotating plate is connected with the rotating plate 33 by the rotating plate 33, and can move by the limiting ring 35, the rotating plate is conveniently and can move by the rotating along the limiting groove by the rotating plate 33, and can be conveniently and is connected with the rotating plate 32 by the rotating through the limiting groove; the inner side of the connecting cylinder 13 is provided with a threaded hole 131, the lower end of the adjusting screw 31 is in threaded connection with the inner side of the threaded hole 131, and the outer wall of the connecting cylinder 13 is provided with a plurality of sliding grooves 132; a plurality of slide bars 212 are fixedly arranged on the inner wall of the adjusting hole 211, the slide bars 212 are movably clamped with the sliding grooves 132, and the support platform 2 is more stable during moving adjustment through the clamping of the slide bars 212 and the sliding grooves 132, so that the deflection of the support platform 2 is avoided; the adjusting screw 31 is fixed in the middle of the top surface of the eccentric end 12; this scheme is through add connecting cylinder 13 and adjusting part 3 between eccentric rod 1 and supporting platform 2, medical personnel is when carrying out the operation once more of tibia for the patient, if need carry out length adjustment to the eccentric extension rod 11 of shin, medical personnel can rotate the swivel plate 32 with the help of outside instrument and make adjusting screw 31 remove in connecting cylinder 13 inboard, simultaneously because extension rod 11's fixed (extension rod 11 and patient's shin fixed connection, or fix the shin through medical personnel when adjusting), thereby can adjust the position of supporting platform 2 on eccentric rod 1, be convenient for adjust the length of eccentric rod 1, and need not to change the position and the angle of supporting platform 2 during the regulation, avoid the condition that follow-up needs to adjust supporting platform 2, improve operation operating efficiency, alleviate patient's misery, this scheme is applicable to not only the eccentric extension rod 11 of shin, also can be applicable to straight extension rod 11 or intramedullary nail in the same reason, make things convenient for the length adjustment of straight extension rod 11 and intramedullary nail, improve the practicality of extension rod 11.
Referring to fig. 3, 4 and 5, specifically, the support assembly 22 includes a support spring 221 and a support washer 222, the support spring 221 is fixed inside the support groove 213, and the support washer 222 is fixedly provided at the bottom of the support spring 221; the top surface side of the eccentric rod 1 is fixedly provided with a supporting cylinder 14, the supporting cylinder 14 is positioned at the outer side of the connecting cylinder 13, the supporting cylinder 14 is movably sleeved at the inner side of the supporting groove 213, and the supporting cylinder 14 is positioned below the supporting gasket 222; the support cylinder 14 is fixed at the top surface limit portion of eccentric end 12, this scheme is through setting up support cylinder 14 at the top of eccentric rod 1, with back that supporting platform 2 was connected with eccentric rod 1, when the patient used the eccentric extension rod 11 of tibia, carries out auxiliary stay to supporting platform 2 through support cylinder 14 and supporting spring 221, lightens the pressure that threaded connection structure bore, avoids adjusting screw 31 and connecting cylinder 13 to bear stress for a long time and lead to inconvenient dismouting after the deformation and produce the metal piece easily and drop, causes the circumstances of infection, further improves the practicality of the eccentric extension rod 11 of tibia.
Referring to fig. 2 and 5, specifically, a threaded groove 216 is formed at the top surface edge of the adjusting end 21; the top surface side of the supporting cover 23 is provided with a fixing groove 231, the inner side of the fixing groove 231 is movably clamped with a fixing nail 232, the fixing groove 231 is positioned above the thread groove 216, and the lower end of the fixing nail 232 is in threaded connection with the inner side of the thread groove 216; an operation hole 233 is formed in the middle of the top surface of the support cover 23, and the operation hole 233 is positioned above the operation groove 33; this scheme sets up supporting cover 23 in the outside of tibia supporting platform 2, supports simultaneously to tibia top bearing structure through supporting cover 23, protects adjusting part 3 on supporting platform 2 through supporting cover 23, avoids external pressure to touch adjusting part 3 and connects, influences the circumstances of the eccentric rod 1 stability of tibia, and through seting up operating hole 233 on supporting cover 23, makes things convenient for medical personnel to directly operate adjusting part 3, improves the convenience of operation.
The invention has the following application flow and working principle: when the invention is used, firstly, the supporting platform 2 is connected with the clamping connection of the connecting cylinder 13 through the adjusting hole 211, so that the slide bar 212 is clamped with the sliding groove 132, one end of the adjusting screw 31 is aligned with the connecting cylinder 13, then, a medical staff rotates the rotating plate 32 through an external tool, the adjusting screw 31 of the adjusting assembly 3 is screwed on the inner side of the connecting cylinder 13, so that the eccentric rod 1 and the supporting platform 2 are connected and installed, then, the supporting cover 23 is fixedly clamped on the outer side of the supporting platform 2, when the tibia eccentric rod 1 is required to be subjected to the tibia operation again, if the length of the tibia eccentric rod 1 is required to be adjusted, the rotating plate 32 can be rotated through the operating hole 233 of the supporting cover 23 by directly passing through the external screwing tool, and the clamping connection of the slide bar 212 and the sliding groove 132, so that the supporting platform 2 can stably move up and down relative to the connecting cylinder 13, thereby, the length of the whole eccentric rod 1 is convenient to adjust, the operation is simple and the operation efficiency is improved;
And in the use of the tibia eccentric rod 1, through the clamping connection of the support cylinder 14 on the eccentric rod 1 and the support component 22 on the support platform 2, the support platform 2 is supported in an auxiliary way through the support cylinder 14 and the support spring 221 when being pressed, the pressure of the joint of the adjusting screw 31 and the connecting cylinder 13 is reduced, the condition that the use of the eccentric rod 1 is influenced by deformation of threads at the joint is avoided, meanwhile, the condition that metal scraps fall to cause infection of a patient during deformation is avoided, and the practicability of the eccentric rod 1 is improved.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
It is apparent that the above-described embodiments are only some embodiments of the present invention, but not all embodiments, and the preferred embodiments of the present invention are shown in the drawings, which do not limit the scope of the patent claims. This invention may be embodied in many different forms, but rather, embodiments are provided in order to provide a thorough and complete understanding of the present disclosure. Although the invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing description, or equivalents may be substituted for elements thereof. All equivalent structures made by the content of the specification and the drawings of the invention are directly or indirectly applied to other related technical fields, and are also within the scope of the invention.
Claims (10)
1. The utility model provides a tibia extension rod eccentric adjustment apparatus, its characterized in that, including eccentric rod (1), the fixed connecting cylinder (13) that is equipped with in top surface middle part of eccentric rod (1), supporting platform (2) have been cup jointed in the outside activity of connecting cylinder (13), supporting platform (2) are including adjusting end (21), supporting component (22) and supporting lid (23), the top outside fixed joint of adjusting end (21) is equipped with supporting lid (23), adjusting hole (211) have been seted up at the middle part of adjusting end (21), connecting cylinder (13) activity cup joints in the inboard of adjusting hole (211), supporting groove (213) have been seted up at adjusting hole (211) periphery, supporting component (22) are fixed to the inboard of supporting groove (213), rotation groove (214) have been seted up at the top of adjusting hole (211), spacing groove (215) have been seted up to the inboard bottom surface of rotation groove (214), the inboard activity joint of rotation groove (214) is equipped with adjusting component (3), adjusting component (3) are including adjusting screw (31), swivel plate (32), operation ring (33) and spacing screw (35) are located in adjusting hole (211), the lower extreme threaded connection of adjusting screw (31) is in the inboard of connecting cylinder (13), the fixed rotating plate (32) that is equipped with in top of adjusting screw (31), rotating plate (32) activity joint is in the inboard of rotating groove (214), operating groove (33) have been seted up at the top surface middle part of rotating plate (32), the bottom surface limit portion of rotating plate (32) is fixed and is equipped with go-between (34), the bottom of go-between (34) is fixed and is equipped with spacing ring (35), spacing ring (35) activity joint is in the inboard of spacing groove (215).
2. A tibial extension rod eccentric adjustment instrument in accordance with claim 1 wherein: screw holes (131) are formed in the inner side of the connecting cylinder (13), the lower ends of the adjusting screws (31) are connected with the inner side of the screw holes (131) in a threaded mode, and a plurality of sliding grooves (132) are formed in the outer wall of the connecting cylinder (13).
3. A tibial extension rod eccentric adjustment instrument in accordance with claim 2 wherein: a plurality of sliding rods (212) are fixedly arranged on the inner wall of the adjusting hole (211), and the sliding rods (212) are movably clamped with the sliding grooves (132).
4. A tibial extension rod eccentric adjustment instrument in accordance with claim 3 wherein: the support assembly (22) comprises a support spring (221) and a support gasket (222), wherein the support spring (221) is fixed on the inner side of the support groove (213), and the support gasket (222) is fixedly arranged at the bottom of the support spring (221).
5. A tibial extension rod eccentric adjustment instrument in accordance with claim 4 wherein: the eccentric rod is characterized in that a supporting cylinder (14) is fixedly arranged on the edge of the top surface of the eccentric rod (1), the supporting cylinder (14) is located on the outer side of the connecting cylinder (13), the supporting cylinder (14) is movably sleeved on the inner side of the supporting groove (213), and the supporting cylinder (14) is located below the supporting gasket (222).
6. A tibial extension rod eccentric adjustment instrument in accordance with claim 5 wherein: the eccentric rod (1) comprises an extension rod (11), an eccentric end (12) is fixedly arranged at the top of the extension rod (11), and a fixing hole (111) is formed in the extension rod (11).
7. A tibial extension rod eccentric adjustment instrument in accordance with claim 6 wherein: the adjusting screw (31) is fixed in the middle of the top surface of the eccentric end (12), and the supporting cylinder (14) is fixed at the edge of the top surface of the eccentric end (12).
8. A tibial extension rod eccentric adjustment instrument in accordance with claim 7 wherein: a thread groove (216) is formed in the edge of the top surface of the adjusting end (21).
9. A tibial extension rod eccentric adjustment instrument in accordance with claim 8 wherein: the top surface limit portion of supporting lid (23) has seted up fixed slot (231), the inboard movable joint of fixed slot (231) is equipped with staple (232), fixed slot (231) are located the top of screw groove (216), the lower extreme threaded connection of staple (232) is in the inboard of screw groove (216).
10. A tibial extension rod eccentric adjustment instrument in accordance with claim 9 wherein: an operation hole (233) is formed in the middle of the top surface of the support cover (23), and the operation hole (233) is located above the operation groove (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311163867.4A CN117137691B (en) | 2023-09-11 | 2023-09-11 | Tibia extension rod eccentric adjusting instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311163867.4A CN117137691B (en) | 2023-09-11 | 2023-09-11 | Tibia extension rod eccentric adjusting instrument |
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| CN117137691A CN117137691A (en) | 2023-12-01 |
| CN117137691B true CN117137691B (en) | 2024-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311163867.4A Active CN117137691B (en) | 2023-09-11 | 2023-09-11 | Tibia extension rod eccentric adjusting instrument |
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| CN (1) | CN117137691B (en) |
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|---|---|---|---|---|
| US5306276A (en) * | 1991-12-10 | 1994-04-26 | Zimmer, Inc. | Tibial resector guide |
| US5387239A (en) * | 1993-04-19 | 1995-02-07 | Wright Medical Technology, Inc. | Adjustable length prosthetic implant |
| US6063122A (en) * | 1998-06-22 | 2000-05-16 | Johnson & Johnson Professional, Inc. | Jack screw adapter for joint prosthesis |
| MX2017014262A (en) * | 2017-11-07 | 2019-05-08 | Genaro Rico Martinez | Non-cemented blocked knee prosthesis. |
| CN110786970A (en) * | 2019-10-28 | 2020-02-14 | 北京市春立正达医疗器械股份有限公司 | Tibial plateau component and knee joint prosthesis applying same |
| CN112603605A (en) * | 2020-12-25 | 2021-04-06 | 西安交通大学医学院第二附属医院 | Double-acting knee joint prosthesis consisting of double-acting half-knee joint femoral prosthesis and tibia straight/eccentric extension rod |
| CN112741714A (en) * | 2021-01-20 | 2021-05-04 | 北京积水潭医院 | Prosthesis capable of extending joint of lower limb |
| CN214712936U (en) * | 2021-01-20 | 2021-11-16 | 北京积水潭医院 | Prosthesis capable of extending joint of lower limb |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6663670B2 (en) * | 2002-01-18 | 2003-12-16 | Depuy Orthopaedics, Inc. | Adjustable long bone prosthesis |
| EP2394606A1 (en) * | 2010-06-11 | 2011-12-14 | WALDEMAR LINK GmbH & Co. KG | Prosthetic for partial replacement of a long bone |
-
2023
- 2023-09-11 CN CN202311163867.4A patent/CN117137691B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5306276A (en) * | 1991-12-10 | 1994-04-26 | Zimmer, Inc. | Tibial resector guide |
| US5387239A (en) * | 1993-04-19 | 1995-02-07 | Wright Medical Technology, Inc. | Adjustable length prosthetic implant |
| US6063122A (en) * | 1998-06-22 | 2000-05-16 | Johnson & Johnson Professional, Inc. | Jack screw adapter for joint prosthesis |
| MX2017014262A (en) * | 2017-11-07 | 2019-05-08 | Genaro Rico Martinez | Non-cemented blocked knee prosthesis. |
| CN110786970A (en) * | 2019-10-28 | 2020-02-14 | 北京市春立正达医疗器械股份有限公司 | Tibial plateau component and knee joint prosthesis applying same |
| CN112603605A (en) * | 2020-12-25 | 2021-04-06 | 西安交通大学医学院第二附属医院 | Double-acting knee joint prosthesis consisting of double-acting half-knee joint femoral prosthesis and tibia straight/eccentric extension rod |
| CN112741714A (en) * | 2021-01-20 | 2021-05-04 | 北京积水潭医院 | Prosthesis capable of extending joint of lower limb |
| CN214712936U (en) * | 2021-01-20 | 2021-11-16 | 北京积水潭医院 | Prosthesis capable of extending joint of lower limb |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117137691A (en) | 2023-12-01 |
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