CN113616228A - Auxiliary fixing brace for preoperative unicondylar replacement imaging evaluation - Google Patents
Auxiliary fixing brace for preoperative unicondylar replacement imaging evaluation Download PDFInfo
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- CN113616228A CN113616228A CN202111072980.2A CN202111072980A CN113616228A CN 113616228 A CN113616228 A CN 113616228A CN 202111072980 A CN202111072980 A CN 202111072980A CN 113616228 A CN113616228 A CN 113616228A
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- 238000003384 imaging method Methods 0.000 title claims abstract description 6
- 238000011156 evaluation Methods 0.000 title abstract description 5
- 238000003825 pressing Methods 0.000 claims abstract description 102
- 210000000629 knee joint Anatomy 0.000 claims abstract description 55
- 238000009434 installation Methods 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims description 3
- 210000000689 upper leg Anatomy 0.000 abstract description 21
- 210000002414 leg Anatomy 0.000 abstract description 18
- 210000002303 tibia Anatomy 0.000 abstract description 11
- 241001227561 Valgus Species 0.000 description 11
- 241000469816 Varus Species 0.000 description 9
- 210000003414 extremity Anatomy 0.000 description 8
- 230000006378 damage Effects 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 5
- 210000001699 lower leg Anatomy 0.000 description 5
- 230000005855 radiation Effects 0.000 description 3
- 208000028990 Skin injury Diseases 0.000 description 2
- 244000309466 calf Species 0.000 description 2
- 210000000845 cartilage Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 210000003423 ankle Anatomy 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 210000004417 patella Anatomy 0.000 description 1
- 238000013001 point bending Methods 0.000 description 1
- 210000002967 posterior cruciate ligament Anatomy 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/04—Positioning of patients; Tiltable beds or the like
- A61B6/0407—Supports, e.g. tables or beds, for the body or parts of the body
- A61B6/0421—Supports, e.g. tables or beds, for the body or parts of the body with immobilising means
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
- A61B6/505—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for diagnosis of bone
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Abstract
The invention provides an auxiliary fixing brace for preoperative unicondylar replacement imaging evaluation, which comprises a side limiting part, a fixing connecting piece, a pressing mounting part and a joint driving part, wherein the side limiting part is arranged on the side of the fixing connecting piece; the side limiting pieces are arranged in pairs and are provided with a first side plate and a second side plate which are connected together, and the two side plates are respectively arranged on two sides of a femur and a tibia of a leg of a patient to keep the leg of the patient at a certain angle; the two fixed connecting pieces are respectively connected with the two first side plates or the two second side plates to ensure that the two first side plates or the two second side plates are mutually kept parallel; the two pairs of abutting mounting pieces are respectively mounted on the two first side plates and the two second side plates; at least one joint driving piece is arranged at the position where the first side plate and the second side plate are connected; the auxiliary fixing brace can push the knee joint of a patient to keep the knee joint inverted or everted and take X-ray photographs, manual holding of a doctor is not needed, and the doctor does not need to be exposed in a ray environment, so that the auxiliary fixing brace is safer.
Description
Technical Field
The invention relates to the technical field of medical auxiliary instruments, in particular to an auxiliary fixing brace for preoperative unicondylar replacement imaging evaluation.
Background
Knee joint unicondylar joint replacement is a treatment means for treating the medial and lateral ankles of the knee joint between knee joint osteotomy and total knee joint replacement; that is, when one of the three compartments, i.e., the medial compartment, the lateral compartment, and the patellar compartment included in the knee joint is diseased, the diseased compartment is replaced. Compared with osteotomy, the knee joint unicondylar joint replacement has the characteristics of high success rate, less complication and quick rehabilitation, and long-term results are superior to that of osteotomy. Compared with total knee joint replacement, the method has the advantages of small operation, retention of posterior cruciate ligament, much bone mass retention, less bleeding and quick rehabilitation.
The selection requirement of the unicondylar joint replacement on the indications is particularly strict, the legs of a patient need to be photographed by X-rays before the unicondylar joint replacement is performed, the soft thighs of the joint compartments are observed, and the indications are selected; when taking X-ray photography, the femur of a patient needs to be fixed, then the knee joint is turned inwards or outwards to a stress position with force, the cartilage joint gap of the patient is exposed, and only then, a doctor can observe the cartilage joint on the photographed X-ray film and make a selection on an indication.
It is now common practice for a doctor to wear protective gloves, wear a lead garment, use the force of the arm to invert or evert the knee joint, and then expose it to radiation. However, this method exposes the physician to radiation, and even with the protection, the frequent exposure still has adverse effects on the health of the physician.
Chinese patent document CN209847211U discloses a knee joint internal and external turning stress position bracket for a single leg, which turns the knee joint inwards and outwards by means of constraining thighs and pushing shanks to swing left and right; chinese patent document CN209847212U discloses a two-legged knee joint internal-external-turning stress position support, which performs internal-external turning on the knee joint by fixing two thighs and pushing two shanks to swing inwards or outwards; chinese patent document CN210019388U discloses a three-point bending thrust apparatus for acquiring X-ray images of knee joints, which performs inward and outward turning of the knee joints by limiting the thighs and calves from one side and pushing the knee joints from the other side; chinese patent document CN211325199U discloses a knee joint varus-valgus device, which sets a telescopic varus portion and valgus portion between a thigh fixing portion for fixing a thigh and a shank fixing portion for fixing a shank, and realizes the varus-valgus of the knee joint by extending the varus portion or the valgus portion; chinese patent document CN211325120U discloses a knee joint varus or valgus stress position X-ray photography auxiliary fixing device, which realizes the varus and valgus of the knee joint by arranging a plurality of cushions with fixing bayonets and arranging the cushions in a staggered manner. The various solutions provided in the above patent documents basically operate the straight leg, that is, after the leg is straightened, the thigh is fixed, and the lower leg is pushed to swing relative to the thigh, so as to realize the varus and valgus of the knee joint position; however, for determining whether the unicondylar joint replacement can be performed, the image obtained by performing the knee joint varus and valgus in the straight leg state cannot be used, but the thigh and the calf are firstly included at an angle of about 150 degrees to 170 degrees, and then the knee joint is turned inwards and outwards, so that the three positions of the medial compartment, the lateral compartment and the patellar compartment can be clearly shot to the maximum extent, and whether the knee joint unicondylar joint replacement is suitable or not can be accurately determined.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the technical defects that the knee joint varus-valgus device in the prior art cannot perform stress position valgus on the knee joint with the large leg and the small leg bent at a specific angle, and manual assistance causes radiation damage to a human body, so that the fixing brace capable of performing stress position valgus on the knee joint with the large leg and the small leg bent at a specific angle is provided.
To this end, the present invention provides an auxiliary fixation brace apparatus for pre-operative unicondylar replacement imaging evaluation, comprising:
the side limiting pieces are arranged in pairs and are provided with a first side plate and a second side plate, the ends of which are connected at a certain angle;
the two fixed connecting pieces are used for fixedly connecting the two first side plates and keeping the two first side plates parallel; the other one is used for fixedly connecting the two second side plates and keeping the two second side plates parallel;
the pressing mounting pieces are two pairs, one pair is oppositely arranged on the two first side plates, and the other pair is oppositely arranged on the two second side plates;
and at least one joint driving piece is arranged at the position where the first side plate and the second side plate are connected and is suitable for pushing the knee joint to turn inwards or outwards.
As a preferable aspect, the fixing connector includes:
the two fixed connecting plates are respectively used for being fixedly connected with the two first side plates or the two second side plates;
the two amplitude limiting plates are respectively arranged in the middle of the head end and the middle of the tail end of the fixed connecting plate in a quick assembling and disassembling mode.
As a preferable scheme, one end of the amplitude limiting plate is provided with two limiting threaded holes, two fixed connecting through holes are arranged on the fixed connecting plate opposite to the two limiting threaded holes, and two fixed connecting bolts penetrate through the fixed connecting through holes and then are in threaded connection with the limiting threaded holes;
the other end of the amplitude limiting plate is provided with two limiting through holes, two fixed plug-pull bolts are arranged on the fixed connecting plate opposite to the two limiting through holes, and the two fixed plug-pull bolts are arranged in the two limiting through holes in a pluggable manner; the outer diameter of the fixed plug bolt is smaller than the inner diameter of the limiting through hole;
the side surface of the amplitude limiting plate is further provided with at least one side through hole which penetrates through the two limiting through holes, and the release bolt is installed inside the side through hole in a pluggable mode and used for limiting the insertion depth of the fixed plug-pull bolt.
As a preferred aspect, the pressing fitting includes:
the abutting mounting shaft is in threaded connection with the first side plate or the second side plate;
the handle is fixedly arranged at the outer end of the abutting mounting shaft;
the pressing ball is fixedly arranged at the inner end of the pressing mounting shaft;
the first abutting mounting plate is sleeved on the abutting mounting shaft through an abutting mounting hole, and the inner diameter of the abutting mounting hole is smaller than the diameter of the abutting ball;
the second abutting mounting plate is buckled with the first abutting mounting plate, and a space for accommodating the abutting ball is formed in the middle of the second abutting mounting plate; one side of the second abutting mounting plate, which is far away from the first abutting mounting plate, is provided with an arc abutting surface.
As a preferable scheme, the abutting installation shaft penetrates through the fixed connecting piece and the side limiting piece simultaneously.
As a preferred aspect, the joint drive comprises:
the threaded shaft is screwed at the joint of the first side plate and the second side plate;
the driving handle is fixedly arranged at the outer end of the threaded shaft;
the square rotary table is fixedly arranged at the inner end of the threaded shaft;
the first push plate is sleeved on the threaded shaft through a circular through hole arranged in the center and is positioned between the driving handle and the square rotary disc;
the second push plate is buckled with the first push plate, and a circular inner cavity for the square rotary disc to rotate is formed in the middle of the second push plate; and one side of the second push plate, which is far away from the first push plate, is a joint driving surface.
Preferably, the folding table further comprises an extension plate adapted to be connected with the first side plate or the second side plate;
the extension plate is provided with at least two first mounting through holes, the first side plate or the second side plate is provided with at least two second mounting through holes, and the extension plate is connected with the first side plate or the second side plate through mounting bolts which penetrate through the first mounting through holes and the second mounting through holes.
Preferably, the first side plate and the second side plate are rotatably connected through an angle control structure;
the angle control structure includes:
the U-shaped structure is arranged at the end part of the first side plate, two opposite angle limiting rings are fixedly arranged on two opposite inner side surfaces, and each angle limiting ring is provided with a plurality of continuously arranged zigzag grooves and a communicating bottom groove communicated with all the zigzag grooves;
the threaded sleeve penetrates through the circle centers of the two angle limiting circular rings and is fixedly arranged on the U-shaped structure in a penetrating mode, and the middle part of the threaded sleeve is suitable for the threaded connection and installation of the joint driving piece;
the rotating shaft hole is arranged at the end part of the second side plate and is suitable for being rotatably sleeved outside the threaded sleeve;
the two limiting clamping pieces are rotatably sleeved on the threaded sleeve, are respectively arranged on two sides of the second side plate and are provided with telescopic limiting clamping teeth, and the telescopic limiting clamping teeth have an initial state and an adjusting state;
in an initial state, the telescopic limiting latch is clamped into the sawtooth-shaped groove, and the limiting clamp cannot freely rotate around the threaded sleeve;
when the adjusting state is carried out, the telescopic limiting clamping teeth enter the communicating bottom groove from the sawtooth-shaped grooves and can rotate freely around the threaded sleeve.
As a preferred scheme, the limit fastener comprises:
the pressing piece comprises the telescopic limiting latch and is arranged in the U-shaped structure;
the rotating sleeve is positioned on the outer side of the U-shaped structure and is provided with a rotating hole which is rotatably sleeved on the threaded sleeve;
the connecting column is fixedly connected with the pressing piece and the rotating sleeve.
As a preferred aspect, the pressing member includes:
the pressing shell is arranged in the U-shaped structure and is provided with an installation cavity, and a top opening and a side opening which are communicated with the installation cavity;
the pressing column is provided with a pressing part, a limiting flange, a telescopic limiting latch and a tail end column; the pressing part extends outwards from the top opening; the position-limiting flange is positioned inside the top opening; the telescopic limiting latch extends out of the side opening; the tail end column is sleeved with an elastic piece;
in an initial state, the elastic piece has a tendency of pushing the pressing column to push upwards, the pressing part protrudes out of the top opening by a certain height, and the telescopic limiting latch is positioned in the sawtooth-shaped groove;
when the adjusting state is achieved, the pressing part is pressed downwards, the elastic piece is pressed to be shortened, the telescopic limiting clamping teeth follow the pressing column to move downwards, and then the sawtooth-shaped grooves enter the communicating bottom grooves.
The technical scheme provided by the invention has the following advantages:
1. the auxiliary fixing brace comprises a side limiting piece, a fixing connecting piece, a pressing mounting piece and a joint driving piece; the side limiting pieces are arranged in pairs and provided with a first side plate and a second side plate, the ends of the first side plate and the second side plate are connected together at a certain angle, and the two side plates are respectively used for being connected with the femur side and the tibia side of the leg of the patient to keep the leg of the patient at a certain angle; the two fixed connecting pieces are respectively used for fixedly connecting the two first side plates or the two second side plates so as to enable the two first side plates or the two second side plates to be kept parallel to each other; the pressing mounting pieces are provided with two pairs, one pair is oppositely arranged on the two first side plates, and the other pair is oppositely arranged on the two second side plates; at least one joint driving piece is arranged at the position where the first side plate and the second side plate are connected; when the auxiliary fixing brace is used, the fixing connecting piece is firstly opened, and the pair of side limiting pieces are respectively placed on the inner side and the outer side of the affected limb; then operating the fixed connecting piece and the abutting mounting piece to enable the fixed connecting piece and the abutting mounting piece to be fixed on two sides of the leg of the patient, wherein a pair of first side plates are arranged on two sides of the femur, and a pair of second side plates are arranged on two sides of the tibia; the fixed connecting piece is used for keeping the two first side plates parallel to each other, the two second side plates are parallel to each other, and the abutting mounting piece is used for fixedly mounting the side limiting piece by abutting against the leg of the patient; and then driving a joint driving piece to push the knee joint to turn inwards or outwards, keeping the turning-inwards or turning-outwards degree after the target degree is reached, and shooting the knee joint of the patient.
The auxiliary fixing brace can push the knee joint of a patient to keep the knee joint inverted or everted and keep X-ray shooting for a certain time, manual holding of a doctor is not needed, and the doctor does not need to be exposed in a ray environment, so that the auxiliary fixing brace is safer.
2. The auxiliary fixing brace of the invention, the fixed link includes: the amplitude limiting plate is fixedly connected with the connecting plate; the two fixed connecting plates are fixedly connected to the two first side plates or the two second side plates; two limiting threaded holes are formed in one end of the amplitude limiting plate, two fixing connecting through holes are formed in the corresponding fixing connecting plate, two fixing connecting bolts penetrate through the fixing connecting through holes and then are in threaded connection with the limiting threaded holes, and the amplitude limiting plate is connected with one end of the fixing connecting plate; the other end of the amplitude limiting plate is provided with two limiting through holes, two fixed plug-pull bolts are arranged on the corresponding fixed connecting plate and can be installed inside the two limiting through holes in a pluggable manner, and then the fixed connecting plate and the other end of the amplitude limiting plate are connected, so that the amplitude limiting plate can be always relatively perpendicular to the fixed connecting plate; the amplitude limiting plate is connected with the fixed connecting plates in the connecting mode, so that the distance between the two fixed connecting plates can be freely adjusted, and further the distance between the two side limiting pieces can be adjusted to adapt to the situation that the legs of different patients are different in thickness; the two ends of the amplitude limiting plate are connected through two fixed connecting bolts or two fixed plugging bolts, so that the amplitude limiting plate and the fixed connecting plate can be limited to rotate relatively, and a pair of first side plates or a pair of second side plates can be stably kept in a parallel state;
furthermore, the side surface of the amplitude limiting plate is provided with at least one side through hole which transversely penetrates through the two limiting through holes, and the release bolt is installed in the side through hole in a pluggable manner and can limit the depth of the fixed plugging bolt inserted into the limiting through holes; after the shooting is finished, the patient independently extracts the release bolt, the limitation on the fixed plug bolt can be quickly removed, the parallel state of the pair of first side plates or the pair of second side plates is changed, the space of the knee joint position (namely the space between the two joints, and the joints are the connecting positions of the first side plates and the second side plates) is increased, the limitation of the joint driving piece on the joint position of the patient is further reduced, and the pain of the patient caused by the fact that the joint is required to be kept turned inwards or outwards is relieved.
3. The auxiliary fixing brace of the invention, the abutting installation part comprises: the pressing mounting shaft, the handle, the pressing ball, the first pressing mounting plate and the second pressing mounting plate are arranged on the pressing mounting shaft; the pressing mounting shaft is rotatably screwed on the first side plate or the second side plate, and when the side limiting piece needs to be pressed and mounted on the affected limb, the pressing mounting shaft can be operated to perform inward spiral extrusion until the arc-shaped pressing surface of the second pressing mounting plate tightly abuts on the affected limb; the pressing ball is fixedly arranged at the inner end of the pressing mounting shaft and is positioned in a space formed by buckling the first pressing mounting plate and the second pressing mounting plate, so that when the joint is in an inversion or eversion stress position due to extrusion of the joint driving piece, and the femur or the tibia tilts along with the joint driving piece, the second pressing mounting plate can tilt correspondingly along with the femur or the tibia, and discomfort or skin injury caused by hard extrusion is avoided. Preferably, the abutting installation shaft penetrates through the fixed connecting piece and the side limiting piece simultaneously.
4. The auxiliary fixing brace of the invention, the joint driving part includes: the device comprises a threaded shaft, a driving handle, a square rotary disc, a first push plate and a second push plate; the threaded shaft can rotatably penetrate through the joint of the first side plate and the second side plate, when the knee joint of a patient needs to be extruded, the threaded shaft can be rotated to extrude inwards until the joint driving surface on the second push plate supports against the knee joint and the knee joint reaches a stress position; the square rotary table is arranged at the inner end of the threaded shaft and is positioned in a circular inner cavity formed after the first push plate and the second push plate are buckled, and when the threaded shaft rotates, the square rotary table and the circular inner cavity rotate in a tangent mode; furthermore, the joint driving surface is provided with an arc concave surface matched with the knee joint, so that pain and damage to the knee joint caused by the second push plate pushing the knee joint to move can be reduced.
5. The auxiliary fixing brace is further provided with an extension plate which is connected with the first side plate or the second side plate, so that the length of the first side plate or the second side plate can be extended to adapt to affected limbs with different lengths.
6. The auxiliary fixing brace of the invention, the angle control structure includes: the device comprises a U-shaped structure, a threaded sleeve, a rotating shaft hole and a limiting clamping piece; the U-shaped structure is fixedly connected with the first side plate, the second side plate is sleeved on the threaded sleeve, and when the second side plate needs to be limited, the two limiting clamping pieces can be clamped at two sides of the second side plate, so that the limiting clamping pieces are in an initial state; when the angle between first curb plate and the second curb plate needs to be adjusted, can adjust the spacing fastener of second curb plate needs pivoted direction one side to suitable position, then rotate the second curb plate, adjust the angle between its and the first curb plate, treat that the angle between the board of adjusting both sides after, will die one of them spacing fastener card in second curb plate one side earlier, then adjust another spacing fastener card die the opposite side of second curb plate again to reach the restriction to the second curb plate.
The angle control structure can adjust the angle between the second side plate and the first side plate by adjusting the position and the state of the limiting clamping piece; that is to say, the auxiliary fixing brace can adjust the angle between the first side plate and the second side plate at any time according to the angle between the femur and the tibia of the patient required by shooting, so that the femur and the tibia of the patient can be fixed at a specific angle, the joint position is driven by the joint driving piece, the knee joint reaches the stress position of inversion or eversion, and then the three positions of the medial compartment, the lateral compartment and the patella compartment and other positions are shot clearly, so that the observation of a doctor is facilitated; the shooting of the patient is avoided being assisted manually, the shooting difficulty is reduced, and the harm to the human body is reduced.
7. The auxiliary fixing brace of the invention, the limiting clamping piece includes: the pressing piece, the rotating sleeve and the connecting column; the pressing piece comprises a pressing shell and a pressing column which are arranged in the U-shaped structure; the pressing shell is provided with a mounting cavity, and a top opening and a side opening which are communicated with the mounting cavity; the pressing column is provided with a pressing part, a limiting flange, a telescopic latch and a tail column end, and the pressing part extends out of the top opening and is suitable for controlling the telescopic latch to enter the communicating bottom groove; the rotating sleeve is suitable for being sleeved on a threaded sleeve outside the U-shaped structure; the connecting column is used for connecting the rotating sleeve with the pressing piece. According to the auxiliary fixing brace, when the included angle between the first side plate and the second side plate needs to be adjusted, only the pressing part on the pressing column needs to be pressed, so that the elastic part on the tail column end is pressed to be shortened, the telescopic limiting latch is driven to move along with the pressing column, the telescopic limiting latch enters the communicating bottom groove from the sawtooth-shaped groove, the limitation on the second side plate on the side limiting part can be removed, and the second side plate can freely rotate around the threaded sleeve; when rotating suitable position, loosen and press the splenium, make scalable spacing latch get back to in the zigzag groove, can carry out spacing card again to the second curb plate and die. The auxiliary fixing brace is simple to operate and light in structure, and improves the working efficiency of doctors.
Drawings
To more clearly illustrate the technical solutions in the prior art or the embodiments of the present invention, the drawings used in the description of the prior art or the embodiments are briefly introduced below.
Fig. 1 is a schematic view of the overall structure of the auxiliary fixing brace of the present invention.
Fig. 2 is an exploded view of the fixed connector of fig. 1.
Figure 3 is an exploded view of the crush mounts of figure 1.
Figure 4 is an exploded view of the joint driver of figure 1.
Fig. 5 is a schematic view of the extension board of fig. 1.
Fig. 6 is an exploded view of the side stop of fig. 1.
Fig. 7 is a schematic view of the construction of the limit catch of fig. 6.
Reference numerals: 1. a side limiting part; 11. a first side plate; 12. a second side plate; 13. a second mounting through hole; 14. a U-shaped structure; 140. an inner side surface; 141. an angle limiting ring; 142. a sawtooth-shaped groove; 143. the bottom groove is communicated; 15. a threaded sleeve; 16. a rotating shaft hole; 17. a limiting clamping piece; 170. the limiting latch can be extended and retracted; 171. a pressing member; 172. rotating the sleeve; 173. connecting columns; 174. rotating the hole; 175. pressing the housing; 176. pressing the column; 177. a mounting cavity; 178. the top is open; 179. the side surface is opened; 180. a pressing part; 2. fixing the connecting piece; 21. fixing the connecting plate; 210. fixedly connecting the through holes; 211. fixing the plug; 22. an amplitude limiting plate; 220. a limiting threaded hole; 221. a limiting through hole; 222. side perforation; 223. releasing the plug; 23. fixing the connecting bolt; 3. pressing the mounting member; 31. Pressing the mounting shaft; 32. a handle; 33. pressing the ball; 34. a first abutting mounting plate; 340. pressing the mounting hole; 35. the second abutting mounting plate; 350. an arc-shaped abutting surface; 4. a joint driving member; 41. a threaded shaft; 42. a drive handle; 43. a square turntable; 44. a first push plate; 440. a circular through hole; 45. A second push plate; 450. a circular inner cavity; 451. a joint drive surface; 5. an extension plate; 51. a first mounting through hole.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings.
Examples
The present embodiment provides an auxiliary fixing brace, as shown in fig. 1, including: side locating part 1, fixed connector 2, support and press installed part 3 and joint driving piece 4.
The side limiting pieces 1 are arranged in pairs and are provided with a first side plate 11 and a second side plate 12 which are connected at the ends; the two fixed connecting pieces 2 are respectively used for fixedly connecting the two first side plates 11 and the two second side plates 12 and keeping the two first side plates 11 and the two second side plates 12 parallel to each other; two pairs of abutting mounting pieces 3 are respectively mounted on the two first side plates 11 and the two second side plates 12; the joint driver 4 is provided with at least one, and is installed at a position where the first side plate 11 and the second side plate 12 are connected to each other.
When the auxiliary fixing brace of the embodiment is used, the fixing connecting piece 2 is firstly opened, and the lateral limiting piece 1 is sleeved on the affected limb; then the fixed connecting piece 2 and the pressing mounting piece 3 are operated, so that the pressing mounting piece 3 is fixed on two sides of the leg of the patient; specifically, the fixed connecting piece 2 is used for keeping the two first side plates 11 and the two second side plates 22 parallel to each other, and the abutting installation piece 3 is connected with the side limiting piece 1 to fix the side limiting piece 1 on two sides of the leg of the patient; the joint driving member 4 is then driven to push the knee joint to varus or valgus and hold. After the target degree is reached, the varus or valgus degree is kept, and the knee joint of the patient is shot. The auxiliary fixing brace of the embodiment can push the knee joint of a patient to keep turning inwards or outwards and keep a certain time for X-ray shooting, manual holding of a doctor is not needed, the doctor does not need to be exposed in a ray environment, and therefore the auxiliary fixing brace is safer.
As shown in fig. 2, the auxiliary fixing brace of the present embodiment, the fixing connector 2 includes: a fixed connecting plate 21 and a range limiting plate 22. Two fixed connecting plates 21 are respectively and fixedly connected with the two first side plates 11 and the two second side plates 12; one end of the amplitude limiting plate 22 is provided with two limiting threaded holes, two corresponding fixing connecting plates 21 are provided with two fixing connecting through holes 210, and two fixing connecting bolts 23 penetrate through the fixing connecting through holes 210 and then are in threaded connection with the limiting threaded holes 220; the other end of the amplitude limiting plate 22 is provided with two limiting through holes 221, two fixed plugging and unplugging bolts 211 are arranged on the fixed connecting plate 21 opposite to the two limiting through holes 221, and the two fixed plugging and unplugging bolts 211 are installed in the two limiting through holes 221 in a pluggable manner; the outer diameter of the fixed plug 211 is smaller than the inner diameter of the limit through hole 221; further, the side surface of the amplitude limiting plate 22 is further provided with at least one side through hole 222 traversing through the two limiting through holes 221, and the release bolt 223 is installed in the side through hole 222 in a pluggable manner and is used for limiting the insertion depth of the fixed plug 211; after the shooting is finished, the patient can independently pull out the release bolt 223, the limitation on the fixed plug bolt 211 is rapidly removed, the parallel state of the pair of first side plates 11 or the pair of second side plates 12 is changed, the space of the knee joint position (namely the space between the two joints, and the joints are the connecting positions of the first side plates 11 and the second side plates 12) is increased, the limitation of the joint driving part 4 on the joint position of the patient is further reduced, and the pain of the patient caused by the fact that the joint needs to be turned inwards or outwards is reduced.
As shown in fig. 3, the pressing fitting member 3 includes: a pressing mounting shaft 31, a handle 32, a pressing ball 33, a first pressing mounting plate 34, and a second pressing mounting plate 35.
Wherein, the abutting mounting shaft 31 is connected with the first side plate 11 or the second side plate by screw; the handle 32 is fixedly arranged at the outer end of the abutting mounting shaft 31; the abutting ball 33 is fixedly arranged at the inner end of the abutting mounting shaft 31; the pressing mounting shaft 31 passes through a pressing mounting hole 340 formed on the first pressing mounting plate 34 to be connected with the first pressing mounting plate 34, and the inner diameter of the pressing mounting hole 340 is smaller than the diameter of the pressing ball 33; the second abutting mounting plate 35 and the first abutting mounting plate 34 are fastened to each other, a storage space for the abutting balls 33 is formed between the two abutting mounting plates, and an arc abutting surface 350 matched with the knee joint of the patient is arranged on one side, far away from the first abutting mounting plate 34, of the second abutting mounting plate 35.
In the auxiliary fixing brace of the present embodiment, when the lateral limiting member 1 needs to be pressed and mounted on the affected limb, the pressing and mounting shaft 31 is operated to perform inward spiral extrusion until the arc-shaped pressing surface 350 on the second pressing and mounting plate 35 tightly presses against the affected limb; the pressing ball 33 can ensure that when the knee joint is pressed by the joint driving part 4 and is in the stress position of varus or valgus (at the moment, the femur or the tibia inclines), the second pressing mounting plate 35 can correspondingly incline along with the femur or the tibia, and discomfort or skin injury caused by hard extrusion is avoided.
As shown in fig. 4, the joint drive 4 includes: a threaded shaft 41, a drive handle 42, a square dial 43, a first push plate 44, and a second push plate 45.
Wherein: the threaded shaft 41 is screwed with the joint of the first side plate 11 and the second side plate 12 and is connected to penetrate through the side limiting piece 1; the driving handle 42 is fixedly arranged at the outer end of the threaded shaft 41; the square rotary disc 43 is fixedly arranged at the inner end of the threaded shaft 41; the first push plate 44 is sleeved on the threaded shaft 41 through a circular through hole 440 arranged at the center and is positioned between the driving handle 42 and the square turntable 43; a second push plate 45 fastened to the first push plate 44 and having a circular inner cavity 450 formed at the middle thereof for the square turntable 43 to rotate; the side of the second push plate 45 remote from the first push plate 44 is the articulation drive surface 451. When the knee joint of the patient needs to be squeezed, the threaded shaft 41 can be rotated to drive the square rotating disc 43 to squeeze inwards until the joint driving surface 451 on the second push plate 45 abuts against the knee joint, and then the threaded shaft 41 is continuously rotated to enable the knee joint to reach a stress position.
Furthermore, the joint driving surface 451 is provided with an arc concave surface matched with the knee joint, so that pain and injury to the patient caused by the movement of the knee joint pushed by the second push plate 45 can be reduced.
As shown in fig. 5, the auxiliary fixing brace of this embodiment further includes an extension plate 5, at least two first mounting through holes 51 are formed in the extension plate 5, at least two second mounting through holes 13 are formed in the first side plate 11 or the second side plate 12, and the extension plate 5 is connected to the first side plate 11 or the second side plate 12 through mounting bolts passing through the first mounting through holes 51 and the second mounting through holes 13, so as to extend the length of the first side plate 11 or the second side plate 12, thereby facilitating the use of affected limbs with different lengths.
As shown in fig. 6 to 7, in the auxiliary fixing brace of the present embodiment, the first side plate 11 and the second side plate 12 are rotatably connected by an angle control structure, and the angle control structure includes: u-shaped structure 14, thread bush 15, pivot hole 16 and spacing fastener 17.
The U-shaped structure 14 is arranged at the end of the first side plate 11, two opposite inner side surfaces 140 are fixedly provided with two opposite angle limiting rings 141, and each angle limiting ring 141 is provided with a plurality of continuously arranged zigzag grooves 142 and a communication bottom groove 143 communicated with all the zigzag grooves 142; the threaded sleeve 15 penetrates through the centers of the two angle limiting circular rings 141 and is fixedly arranged on the U-shaped structure 14 in a penetrating manner, and internal threads are arranged inside the threaded sleeve and are suitable for the threaded connection and installation of the joint driving piece 4; the rotating shaft hole 16 is arranged at the end part of the second side plate 12 and is suitable for being rotatably sleeved outside the threaded sleeve 15; the two limiting clamping pieces 17 are rotatably sleeved on the threaded sleeve 15, are respectively arranged on two sides of the second side plate 12 in the rotating direction, and are provided with telescopic limiting clamping teeth 170, and the telescopic limiting clamping teeth 170 have an initial state and an adjusting state; in the initial state, the retractable limiting latch 170 is clamped in the sawtooth-shaped groove 142, and the limiting latch 17 cannot freely rotate around the threaded sleeve 15; in the adjusting state, the retractable limiting latch 170 enters the communicating bottom groove 143 from the sawtooth-shaped groove 142 and can freely rotate around the threaded sleeve 15.
In the auxiliary fixing brace of the embodiment, the angle control structure adjusts the angle between the second side plate 12 and the first side plate 11 by adjusting the position and the state of the limit clamping piece 17; namely, the angle between the first side plate 11 and the second side plate 12 can be adjusted at any time according to the angle between the femur and the tibia of the patient required for shooting, so that the femur and the tibia of the patient can be fixed at a specific angle, the knee joint reaches the stress position of inversion or eversion through the joint driving piece 4, and then the three positions, namely the medial compartment, the lateral compartment and the patellar compartment, and other positions are shot clearly, so that the doctor can observe the three positions conveniently; the shooting of the patient is avoided being assisted manually, the shooting difficulty is reduced, and the harm to the human body is reduced.
As shown in fig. 7, the auxiliary fixing brace of the present embodiment, the limiting clip 17 includes: a pressing member 171, a rotating sleeve 172, and a connecting post 173; the pressing member 171 includes a pressing housing 175 and a pressing post 176 installed inside the U-shaped structure 14. Wherein the press housing 175 is mounted inside the U-shaped structure 14, having a mounting cavity 177, and a top opening 178 and a side opening 179 communicating with the mounting cavity 177; the pressing column 176 is provided with a pressing part 180, a limit flange, a telescopic limit latch 170 and a tail end column; the pressing portion 180 protrudes outward from the top opening 178; the stop flange is located inside the top opening 178; the retractable limit latches 170 extend from the side openings 179; the tail end column is sleeved with an elastic piece; the rotating sleeve 172 is positioned outside the U-shaped structure 14 and is provided with a rotating hole 174 which is rotatably sleeved on the threaded sleeve 15; a connection post 173 fixedly connecting the pressing member 171 and the rotary sleeve 172;
when the retractable limit latch 170 is in an initial state, the elastic member has a tendency of pushing the pressing post 176 to push upwards, the pressing portion 180 protrudes from the top opening 178 by a certain height, and the retractable limit latch 170 is located inside the sawtooth-shaped groove 142; when the retractable limiting latch 170 needs to be changed into an adjusting state, the pressing part 180 is pressed downwards, the elastic part is pressed to be shortened, and the retractable limiting latch 170 moves downwards along with the pressing column 176 and slides out of the sawtooth-shaped groove 142 to enter the communicating bottom groove 143.
In the auxiliary fixing brace of the embodiment, when the included angle between the first side plate 11 and the second side plate 12 needs to be adjusted, only the pressing part 180 on the pressing column 176 needs to be pressed, so that the elastic part on the tail column end is pressed and shortened, and then the retractable limiting latch 170 is driven to move along with the pressing column 176 and enter the communicating bottom groove 143 from the zigzag groove 142, so that the limitation on the second side plate 12 on the side limiting part 1 can be removed, and the second side plate 12 can freely rotate around the threaded sleeve 15; when the second side plate 12 is rotated to a proper position, the pressing part 180 is loosened, the retractable limiting latch 170 returns to the sawtooth-shaped groove 142, and the second side plate 12 can be limited and locked again.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. An auxiliary fixation brace for pre-operative unicondylar replacement imaging assessment, comprising:
side limiting pieces (1) which are arranged in pairs and are provided with a first side plate (11) and a second side plate (12) of which the end parts are connected at a certain angle;
two fixed connecting pieces (2), one for fixedly connecting the two first side plates (11) and keeping the two first side plates (11) parallel; the other is used for fixedly connecting the two second side plates (12) and keeping the two second side plates (12) parallel;
the pressing mounting pieces (3) are arranged in two pairs, one pair is oppositely arranged on the two first side plates (11), and the other pair is oppositely arranged on the two second side plates (12);
and at least one joint driving piece (4) is arranged at the position where the first side plate (11) and the second side plate (12) are connected and is suitable for pushing the knee joint to turn inwards or outwards.
2. The auxiliary fixing brace as claimed in claim 1, wherein the fixing connector (2) comprises:
the two fixed connecting plates (21) are respectively used for being fixedly connected with the two first side plates (11) or the two second side plates (12);
the two amplitude limiting plates (22) are arranged in the middle of the head ends and in the middle of the tail ends of the two fixed connecting plates (21) in a quick-detachable mode.
3. The auxiliary fixation brace of claim 2, wherein:
one end of the amplitude limiting plate (22) is provided with two limiting threaded holes (220), two fixing connecting through holes (210) are formed in the fixing connecting plate (21) opposite to the two limiting threaded holes (220), and two fixing connecting bolts (23) penetrate through the fixing connecting through holes (210) and then are in threaded connection with the limiting threaded holes (220);
the other end of the amplitude limiting plate (22) is provided with two limiting through holes (221), two fixed plug-in and pull-out bolts (211) are arranged on the fixed connecting plate (21) opposite to the two limiting through holes (221), and the two fixed plug-in and pull-out bolts (211) can be installed in the two limiting through holes (221) in a pluggable manner; the outer diameter of the fixed plug bolt (211) is smaller than the inner diameter of the limiting through hole (221);
the side surface of the amplitude limiting plate (22) is also provided with at least one side through hole (222) which penetrates through the two limiting through holes (221), and a release bolt (223) is installed inside the side through hole (222) in a pluggable mode and used for limiting the insertion depth of the fixed plug-in and pull-out bolt (211).
4. The auxiliary fixing brace as claimed in claim 1, wherein the pressing mount (3) comprises:
a pressing mounting shaft (31) screwed on the first side plate (11) or the second side plate (12);
the handle (32) is fixedly arranged at the outer end of the abutting mounting shaft (31);
the pressing ball (33) is fixedly arranged at the inner end of the pressing mounting shaft (31);
the first abutting mounting plate (34) is sleeved on the abutting mounting shaft (31) through an abutting mounting hole (340), and the inner diameter of the abutting mounting hole (340) is smaller than the diameter of the abutting ball (33);
the second abutting mounting plate (35) is buckled with the first abutting mounting plate (34), and a space for accommodating the abutting ball (33) is formed in the middle of the second abutting mounting plate; an arc-shaped abutting surface (350) is arranged on one side, far away from the first abutting mounting plate (34), of the second abutting mounting plate (35).
5. The auxiliary fixation brace of claim 4, wherein: the pressing installation shaft (31) penetrates through the fixed connecting piece (2) and the side limiting piece (1) at the same time.
6. The auxiliary fixation brace of claim 1, wherein the articulation drive (4) comprises:
a threaded shaft (41) screwed at the connection of the first side plate (11) and the second side plate (12);
the driving handle (42) is fixedly arranged at the outer end of the threaded shaft (41);
the square rotating disc (43) is fixedly arranged at the inner end of the threaded shaft (41);
the first push plate (44) is sleeved on the threaded shaft (41) through a circular through hole (440) arranged in the center and is positioned between the driving handle (42) and the square rotary disc (43);
the second push plate (45) is buckled with the first push plate (44), and a circular inner cavity (450) for the square rotary disc (43) to rotate is formed in the middle of the second push plate; the side of the second push plate (45) far away from the first push plate (44) is a joint driving surface (451).
7. The auxiliary fixation brace of claim 1, wherein: further comprising an extension panel (5) adapted to be connected with the first side panel (11) or the second side panel (12);
the extension plate is characterized in that at least two first mounting through holes (51) are formed in the extension plate (5), at least two second mounting through holes (13) are formed in the first side plate (11) or the second side plate (12), and the extension plate (5) is connected with the first side plate (11) or the second side plate (12) through mounting bolts penetrating through the first mounting through holes (51) and the second mounting through holes (13).
8. The auxiliary fixation brace of claim 1, wherein: the first side plate (11) and the second side plate (12) are rotatably connected through an angle control structure;
the angle control structure includes:
the U-shaped structure (14) is arranged at the end part of the first side plate (11), two opposite angle limiting rings (141) are fixedly arranged on two opposite inner side surfaces (140), and each angle limiting ring (141) is provided with a plurality of continuously arranged zigzag grooves (142) and communicating bottom grooves (143) communicated with all the zigzag grooves (142);
the threaded sleeve (15) penetrates through the circle centers of the two angle limiting circular rings (141) and is fixedly arranged on the U-shaped structure (14) in a penetrating manner, and the middle part of the threaded sleeve is suitable for the threaded connection and installation of the joint driving piece (4);
the rotating shaft hole (16) is arranged at the end part of the second side plate (12) and is suitable for being sleeved outside the threaded sleeve (15) in a rotatable mode;
the two limiting clamping pieces (17) are rotatably sleeved on the threaded sleeve (15), are respectively arranged on two sides of the second side plate (12), and are provided with telescopic limiting clamping teeth (170), and the telescopic limiting clamping teeth (170) have an initial state and an adjusting state;
in an initial state, the telescopic limiting latch (170) is clamped into the sawtooth-shaped groove (142), and the limiting latch (17) cannot freely rotate around the threaded sleeve (15);
when the adjusting state is realized, the telescopic limiting latch (170) enters the communicating bottom groove (143) from the sawtooth-shaped groove (142) and can freely rotate around the thread sleeve (15).
9. The auxiliary fixing brace of claim 8, wherein the limit catch (17) comprises:
the pressing piece (171) comprises the telescopic limit latch (170) and is arranged inside the U-shaped structure (14);
the rotating sleeve (172) is positioned outside the U-shaped structure (14) and is provided with a rotating hole (174) which is rotatably sleeved on the threaded sleeve (15);
and the connecting column (173) is fixedly connected with the pressing piece (171) and the rotating sleeve (172).
10. The auxiliary fixing brace of claim 9, wherein the pressing piece (171) comprises:
a press housing (175) mounted inside the U-shaped structure (14) and having a mounting cavity (177), and a top opening (178) and a side opening (179) in communication with the mounting cavity (177);
the pressing column (176) is provided with a pressing part (180), a limiting flange, a telescopic limiting latch (170) and a tail end column; the pressing portion (180) extends outward from the top opening (178); the retention flange is located inside the top opening (178); the retractable limit latch (170) extends from the side opening (179); the tail end column is sleeved with an elastic piece;
in an initial state, the elastic piece has a tendency of pushing the pressing column (176) to be upwards pushed, the pressing part (180) protrudes from the top opening (178) to a certain height, and the retractable limiting latch (170) is positioned inside the sawtooth-shaped groove (142);
when the adjusting state is carried out, the pressing part (180) is pressed downwards, the elastic piece is pressed to be shortened, the telescopic limiting clamping teeth (170) move downwards along with the pressing column (176), and enter the communication bottom groove (143) from the sawtooth-shaped groove (142).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111072980.2A CN113616228A (en) | 2021-09-14 | 2021-09-14 | Auxiliary fixing brace for preoperative unicondylar replacement imaging evaluation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111072980.2A CN113616228A (en) | 2021-09-14 | 2021-09-14 | Auxiliary fixing brace for preoperative unicondylar replacement imaging evaluation |
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| Publication Number | Publication Date |
|---|---|
| CN113616228A true CN113616228A (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111072980.2A Pending CN113616228A (en) | 2021-09-14 | 2021-09-14 | Auxiliary fixing brace for preoperative unicondylar replacement imaging evaluation |
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| CN (1) | CN113616228A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116115248A (en) * | 2022-12-12 | 2023-05-16 | 苏州大学附属第二医院 | Auxiliary fixing exoskeleton for wearable imaging evaluation |
-
2021
- 2021-09-14 CN CN202111072980.2A patent/CN113616228A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116115248A (en) * | 2022-12-12 | 2023-05-16 | 苏州大学附属第二医院 | Auxiliary fixing exoskeleton for wearable imaging evaluation |
| CN116115248B (en) * | 2022-12-12 | 2024-01-26 | 苏州大学附属第二医院 | Auxiliary fixing exoskeleton for wearable imaging evaluation |
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