CN108938073B - Femoral neck anteversion angle indicator - Google Patents
Femoral neck anteversion angle indicator Download PDFInfo
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- CN108938073B CN108938073B CN201810998019.8A CN201810998019A CN108938073B CN 108938073 B CN108938073 B CN 108938073B CN 201810998019 A CN201810998019 A CN 201810998019A CN 108938073 B CN108938073 B CN 108938073B
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- clamping strip
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- nail
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/90—Guides therefor
Abstract
The application relates to the technical field of medical equipment, in particular to a femoral neck forward tilting angle indicator; it is used for installing on the femur nailing device, and indicates the forward inclination angle. The clamping strip seat is used for abutting against the wall part of the nailing machine and is clamped with the arc clamping strip in a dovetail groove type manner, so that the arc clamping strip rotates around the center of the arc clamping strip in the clamping strip seat, the arc angle disc can rotate synchronously with the positioning nail, the angle of the rotating positioning nail can be intuitively reflected by means of the angle change when the force line rod rotates to the horizontal position, the driving of the fixing nail can be accurately assisted, the fixing nail is ensured to be driven at the middle position of the femoral head, and the operation deviation is avoided; the use of the nail box has the advantages that the nail box plays a role in improving the existing femur nailing, terminates the nailing condition in the industry always according to personal experience, greatly improves the operation precision and quality, and provides great help for orthopedics doctors and novice users with rich experience.
Description
Technical Field
The application relates to the technical field of medical equipment, in particular to a femoral neck forward tilting angle indicator.
Background
The femoral head is just two bones which support the upper half of the body, the specific position is below the pelvis, one side of the pelvis is provided with an acetabulum, and the two femoral bones just match with the acetabulum to play a role of supporting the upper body. If seen from the outside, is behind and below the buttocks. Femur is the most important bone of human body, and femoral head is more important, and the upright walking, movement and labor of human depend on the supporting function of femoral head. The femoral head is also the most vulnerable site to injury.
With the progress of science and technology, femoral head necrosis can be effectively treated in medicine, and only the artificial femoral head needs to be replaced. However, when replacing the artificial femoral head, the femoral neck needs to be sawed off, positioning nails are driven into the femoral body, and then the artificial femoral head is installed on the head of the femoral neck by installing the fixing nails on the basis of the positioning nails.
The front inclination angle is an included angle formed by the connecting line between the central axis of the human femoral neck and the midpoint of the medial condyle and the lateral condyle of the femur, and is also called torsion angle, the normal range is 12-15 degrees, and the front inclination angle and the rear inclination angle can also occur along with the different structures of the human body; the angle of approach of the dowel is determined by measuring the anteversion angle with a C-arm prior to installation of the artificial femoral head.
Although the forward inclination angle can be accurately measured before an operation, the existing nailing device has no angle indication function when a nail is fed, a positioning nail can be driven into the nail by a bone surgeon with rich experience according to the own clinical experience and the forward inclination angle measured by a C-shaped arm, the inaccurate nailing mode can easily cause the deviation of the fixing nail from the center of the femoral neck, even some practicing doctors can drive the fixing nail outside the femoral neck, and extra injury is caused to the femoral neck, and extra pain is brought to a patient; the fixing nail deviating from the femoral neck cannot be well abutted with the artificial femoral head, so that the operation quality is low, and even nailing is needed again.
Disclosure of Invention
Aiming at the defects and shortcomings of the prior art, the application provides the femur neck forward tilting angle indicator which is simple in structure, reasonable in design and convenient to use, and comprises a T-shaped plug, a force line rod, a circular arc angle dial, a circular arc clamping strip, an elastic screw and a clamping strip seat; the two sides of the zero position of the circular arc angle dial are provided with scale marks, the short arc angle range of one side of the zero position is 1-5 degrees, and the circular arc angle range of the other side of the zero position is 10-30 degrees; the bottom of the T-shaped plug is fixed at the zero position of the circular arc angle dial, and the central line of the cross rod of the T-shaped plug points to the vertical line where the circle center of the circular arc angle dial is located; the bottom of the circular arc angle dial is fixedly provided with an arc clamping strip with a trapezoid cross section, the length of the arc clamping strip is equal to that of the circular arc angle dial, and the circle center of the arc clamping strip and the circle center of the circular arc angle dial are positioned on the same vertical line; the clamping strip seat is provided with a dovetail groove matched with the arc clamping strip, the arc clamping strip is buckled in the dovetail groove of the clamping strip seat, and the arc clamping strip can freely rotate around the circle center of the arc clamping strip in the dovetail groove of the clamping strip seat; the bottom of the clamping strip seat is provided with an elastic screw; the elastic screw penetrates through the clamping strip seat; one end of the force line rod is provided with a socket matched with the T-shaped plug, and the force line rod is detachably inserted on the T-shaped plug.
Further: the water level is characterized by further comprising a water level, wherein the other end of the force line rod is provided with a socket which is spliced with the water level, and the water level is detachably spliced in the socket.
Further: the clamping plate is welded on the inner side of the clamping strip seat, and the clamping plates are symmetrically distributed on two sides of a vertical central line on the inner side surface of the clamping strip seat respectively; one of the clamping plates is provided with a mounting screw penetrating through the clamping plate.
Further: the tightening screw is a claw screw.
Further: the length of the force line rod is 5-10cm.
After the structure is adopted, the application has the beneficial effects that: the application relates to a femoral neck forward inclination angle indicator which is used for being arranged on a femoral nailing device and intuitively indicating the forward inclination angle. The clamping strip seat is used for abutting against the outer wall part of the nailing device and is used for being clamped with the dovetail groove type clamping strip, so that the arc clamping strip always rotates around the center of the arc clamping strip in the clamping strip seat, the arc angle disc is guaranteed to rotate around the center of the positioning nail, the arc angle disc can synchronously rotate with the positioning nail, the rotating angle of the positioning nail can be intuitively reflected by means of the angle change when the force line rod rotates to the horizontal position, and meanwhile, the angle hole of the fixing nail reserved in the positioning nail faces the middle position of the femoral head, so that the fixing nail can be accurately assisted to be driven into the femoral head, the fixing nail is guaranteed to be driven in the middle position of the femoral head, and surgical deviation is avoided; the use of the nail box has the advantages that the nail box plays a role in improving the existing femur nailing, the condition that the nail box is nailed by personal experience in the industry is terminated, doctors with abundant experience are not required to operate in person, abundant expert resources can be saved for serving other patients, and great progress is achieved in orthopedics.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate and together with the description serve to explain the application, if necessary:
FIG. 1 is a schematic diagram of the structure of the present application;
FIG. 2 is a top view of the card bar holder and card of FIG. 1 after welding;
FIG. 3 is a top view of the T-shaped plug and circular arc angle plate of FIG. 1 after welding;
FIG. 4 is a rear view of the circular arc angle scale of FIG. 3;
fig. 5 is a schematic view of the present application as installed on a stapler.
Reference numerals illustrate:
1-pushing rod, 2-rod seat, 3-height adjuster, 4-connecting elbow, 5-anteverted angle indicator, 5-1T shape plug, 5-2 force line pole, 5-21 socket, 5-3 arc angle scale, 5-4 arc card strip, 5-5 elasticity screw, 5-6 card strip seat, 5-61 dovetail, 5-7 level gauge, 5-8 installation screw, 5-9 cardboard, 6-locating nail, 7-staple, 8-femur body, 9-femoral head.
Detailed Description
The present application will now be described in detail with reference to the drawings and the specific embodiments thereof, wherein the exemplary embodiments and the description are for the purpose of illustrating the application only and are not to be construed as limiting the application.
1-5, the femoral neck anteversion angle indicator in this embodiment comprises a T-shaped plug 5-1, a force line rod 5-2, a circular arc angle disc 5-3, a circular arc clamping bar 5-4, an elastic screw 5-5 and a clamping bar seat 5-6; the two sides of the zero position of the circular arc angle scale 5-3 are provided with scale marks, the short arc angle range of one side of the zero position is 1-5 degrees, and the arc angle range of the other side of the zero position is 10-30 degrees; the bottom of the T-shaped plug 5-1 is fixed at the zero position of the circular arc angle disc 5-3, and the central line of the cross rod of the T-shaped plug 5-1 points to the vertical line where the circle center of the circular arc angle disc 5-3 is positioned; the bottom of the arc-shaped angle disc 5-3 is fixedly provided with an arc-shaped clamping strip 5-4 with a trapezoid cross section, the length of the arc-shaped clamping strip 5-4 is equal to that of the arc-shaped angle disc 5-3, and the circle center of the arc-shaped clamping strip 5-4 and the circle center of the arc-shaped angle disc 5-3 are on the same vertical line; the clamping strip seat 5-6 is provided with a dovetail groove 5-61 matched with the arc clamping strip 5-4, the arc clamping strip 5-4 is buckled in the dovetail groove 5-61 of the clamping strip seat 5-6, and the arc clamping strip 5-4 can freely rotate around the circle center of the arc clamping strip 5-4 in the dovetail groove 5-61 of the clamping strip seat 5-6; the bottom of the clamping strip seat 5-6 is provided with an elastic screw 5-5; the elastic screw 5-5 penetrates through the clamping strip seat 5-6; one end of the force line rod 5-2 is provided with a socket 5-21 matched with the T-shaped plug 5-1, and the force line rod 5-2 is detachably spliced on the T-shaped plug 5-1.
As further shown in fig. 1: the novel water level comprises a water level body, wherein the water level body comprises a water level rod 5-7, a water jack 5-21 which is spliced with the water level body 5-7 is arranged at the other end of the water level rod 5-2, the water level body 5-7 is detachably spliced in the water jack 5-21, the design of the water level body 5-7 is convenient for intuitively judging that the water level rod 5-2 is in a horizontal position, and great help is provided for young practitioners; the detachable level 5-7 can also ensure that the level 5-7 is detached for cleaning independently when the instrument is cleaned and disinfected, so as to prevent the level 5-7 from being damaged.
As further shown in fig. 1 and 2: the clamping plate 5-9 is welded on the inner side of the clamping strip seat 5-6, and the clamping plates 5-9 are symmetrically distributed on two sides of a vertical central line on the inner side surface of the clamping strip seat 5-6 respectively; one clamping plate 5-9 is provided with a mounting screw 5-8 penetrating through the clamping plate 5-9; the design of the clamping plates 5-9 is convenient for the installation of the whole indicator, and the installation and fixation can be completed only by clamping the outer wall of the nailing device between the two clamping plates 5-9 and tightening the installation screw 5-8, wherein the installation screw 5-8 abuts against the outer wall of the nailing device.
As further shown in fig. 1: the elastic screw 5-5 is a claw screw, the claw screw is designed to be convenient for manual tightness, and can be conveniently rotated without using an additional tool, so that great convenience is provided for operation.
Further: the length of the force line rod 5-2 is 5-10cm; the longer the length of the force line rod 5-2 is, the closer the locating pin can be, so that the horizontal position can be conveniently observed, but the longer the length of the force line rod 5-2 can prevent the operation, and the operation requirement can be better met when the length of the force line rod 5-2 is 8 cm.
The femur neck forward inclination indicator can be manufactured by integrally forming the clamping strip seat 5-6 and the rod seat 2 of the nailing device when the nailing device is manufactured, and can also be directly arranged on the existing nailing device; when the nailing machine is used for factory production of integrated nailing machines, the length D (refer to the combination of fig. 1 and 3) from the locating nail 6 to the outer side of the rod seat 2 when the nailing machine is used is measured according to the model number of the nailing machine, so that the radius of the circular arc angle disc 5-3 can be determined, a matched forward inclination angle indicator 5 with proper size is selected, and the selected clamping strip seat 5-6 is abutted against the outer side of the rod seat 2 and then welded (refer to fig. 1); when the front inclination indicator 5 is installed on the nailing device in use, the front inclination indicator 5 with the clamping plates 5-9 is needed, the clamping plates 5-9 are needed to clamp the outer side wall of the rod seat 2, the clamping strip seat 5-6 is guaranteed to be abutted against the outer side wall of the rod seat 2 (refer to fig. 1), and then the installation screw 5-8 is screwed to complete installation and fixation.
When the nailing device provided with the forward inclination indicator 5 is used, firstly, the forward inclination angle of the femoral neck of a human body is measured by means of a C-shaped arm, the specific degree of the forward inclination angle is measured, if the forward inclination angle is normal, the range of 0-30 degrees of the arc-shaped angle scale 5-3 in the figure 3 is used, if the backward inclination is measured, the range of 0-5 degrees is used, then the arc-shaped angle scale 5-3 is rotated according to the angle value measured by the C-shaped arm, the arc-shaped angle scale 5-3 is limited by the structures of the arc-shaped clamping strip 5-4 and the dovetail groove 5-61 of the clamping strip seat 5-6, only the T-shaped plug 5-1, the force line rod 5-2 and the level gauge 5-7 are driven to rotate together around the vertical center line of the positioning pin 6, and the rotating angle is read through the relative angle change between the arc-shaped angle scale 5-3 and the outer wall of the rod seat 2, and the angle value is required to be equal to the angle value measured by the C-shaped arm; when the arc-shaped angle disc 5-3 rotates and the force line rod 5-2 is blocked by the rod seat 2, the force line rod 5-2 is scraped off and inserted into the other surface of the T-shaped plug 5-1, and the force line rod is reset again when the force line rod rotates through the rod seat 2; tightening the elastic screw 5-5 when the angle after rotation is equal to the angle measured by the C-shaped arm, and fixing the arc clamping strip 5-4 when the elastic screw 5-5 is propped against the bottom of the arc clamping strip 5-4, so as to prevent the arc angle disc 5-3 from freely rotating, wherein the staggered angle between the force line rod 5-2 and the horizontal nailing device is just equal to the angle measured by the C-shaped arm (namely, the front inclination angle or the back inclination angle); after the nailing machine is ready, the positioning nail 6 is installed, the nailing machine provided with the forward inclination indicator 5 is fixed with the femur body 8 and is the same as the existing nailing machine in use, firstly, the positioning nail 6 (namely, a main nail) is driven into the femur body 8 of a lying human body, then the nailing machine is horizontally placed, the head of the connecting elbow 4 is fastened at the top of the positioning nail 6, when the nailing machine integrally rotates, the positioning nail 6 can be driven to rotate along the axis in the femur body 8, so that the orientation of a preformed hole of the positioning nail 6 is changed, because the orientation of the preformed hole of the positioning nail determines the nailing angle of the fixed nail 7, the nailing angle difference between the fixed nail 7 and the horizontal plane is the forward inclination angle, and is the same as the angle when the adjusted force line rod 5-2 winds back to the horizontal position around the center line of the positioning nail 6, after the nailing machine and the positioning nail 6 are fixed, the whole nailing machine is rotated by holding the push rod 1, the whole forward inclination indicator 5 is driven to rotate, when the force line rod 5-2 rotates to the horizontal position, the positioning nail 6 rotates along the axis, namely, the preformed nail 6 is pushed into the position of the nail 1, the preformed hole is accurately, the nail is pushed into the position of the fixed nail 7, and then the preformed hole is pushed into the fixed nail 1, and the position is aligned with the preformed nail 7, and the fixed nail is positioned in the position, and the position nail is rotated; whether the force line rod 5-2 is horizontal or not can be judged by eye force by a senior doctor, and a novice doctor can be judged by means of the level gauge 5-7; when the current inclination angle range is smaller near 0 degrees, the force line rod 5-2 is inserted into the outer end part of the T-shaped plug 5-1, and the rotation directions of the force line rod 5-2 inserted into the inner side and the outer side of the T-shaped plug 5-1 are opposite, so that the force line rod is reversely used when the force line rod is used according to the principle and the forward inclination and backward inclination, and the principle reverse thrust is simpler, so that complicated description is not needed.
Because the range of the forward inclination angle of normal people is between 12-15 degrees, the design of 0-30 degrees is enough to be used, and the backward inclination of few people can occur, and the backward inclination cannot exceed 5 degrees even though the backward inclination is performed, the backward inclination range of 5 degrees is enough to be used.
The application relates to a femoral neck forward inclination angle indicator which is used for being arranged on a femoral nailing device and intuitively indicating the forward inclination angle. The clamping strip seat is used for abutting against the outer wall part of the nailing device and is used for being clamped with the dovetail groove type clamping strip, so that the arc clamping strip always rotates around the center of the arc clamping strip in the clamping strip seat, the arc angle disc is guaranteed to rotate around the center of the positioning nail, the arc angle disc can synchronously rotate with the positioning nail, the rotating angle of the positioning nail can be intuitively reflected by means of the angle change when the force line rod rotates to the horizontal position, and meanwhile, the angle hole of the fixing nail reserved in the positioning nail faces the middle position of the femoral head, so that the fixing nail can be accurately assisted to be driven into the femoral head, the fixing nail is guaranteed to be driven in the middle position of the femoral head, and surgical deviation is avoided; the use of the nail box has the advantages that the nail box plays a role in improving the existing femur nailing, the condition that the nail box is nailed by personal experience in the industry is terminated, doctors with abundant experience are not required to operate in person, abundant expert resources can be saved for serving other patients, and great progress is achieved in orthopedics.
The foregoing description is only of the preferred embodiments of the application, and all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the application are therefore intended to be embraced therein.
Claims (4)
1. The anterior dip angle indicator of femoral neck, its characterized in that: the femur nailing device is applied to a femur nailing device and comprises a T-shaped plug (5-1), a force line rod (5-2), an arc-shaped angle disc (5-3), an arc-shaped clamping strip (5-4), an elastic screw (5-5) and a clamping strip seat (5-6); the two sides of the zero position of the circular arc angle dial (5-3) are provided with scale marks, the short arc angle range of one side of the zero position is 1-5 degrees, and the arc angle range of the other side of the zero position is 10-30 degrees; the bottom of the T-shaped plug (5-1) is fixed at the zero position of the circular arc angle dial (5-3), and the central line of the cross rod of the T-shaped plug (5-1) points to the vertical line where the circle center of the circular arc angle dial (5-3) is located; the bottom of the arc-shaped angle disc (5-3) is fixedly provided with an arc-shaped clamping strip (5-4) with a trapezoid cross section, the length of the arc-shaped clamping strip (5-4) is equal to that of the arc-shaped angle disc (5-3), and the circle center of the arc-shaped clamping strip (5-4) and the circle center of the arc-shaped angle disc (5-3) are on the same vertical line; the clamping strip seat (5-6) is provided with a dovetail groove (5-61) matched with the arc clamping strip (5-4), the arc clamping strip (5-4) is buckled in the dovetail groove (5-61) of the clamping strip seat (5-6), and the arc clamping strip (5-4) can freely rotate around the circle center of the arc clamping strip (5-4) in the dovetail groove (5-61) of the clamping strip seat (5-6); the bottom of the clamping strip seat (5-6) is provided with an elastic screw (5-5); the elastic screw (5-5) penetrates through the clamping strip seat (5-6); one end of the force line rod (5-2) is provided with a socket (5-21) matched with the T-shaped plug (5-1), and the force line rod (5-2) is detachably spliced on the T-shaped plug (5-1); the clamping plate (5-9) is welded on the inner side of the clamping strip seat (5-6), and the clamping plates (5-9) are symmetrically distributed on two sides of the vertical central line of the inner side surface of the clamping strip seat (5-6) respectively; one clamping plate (5-9) is provided with a mounting screw (5-8) penetrating through the clamping plate (5-9);
when the indicator is installed, the outer wall of the nailing device is clamped between the two clamping plates (5-9), the installation screw (5-8) is screwed down, and the installation screw (5-8) is abutted against the outer wall of the nailing device, so that the installation and fixation can be completed;
when the angle driving device is used, the arc-shaped angle disc (5-3) is rotated according to the angle value measured by the C-shaped arm, the positioning nail (6) is driven into the femur body (8) of a lying human body, then the nailing device is horizontally placed, the head of the connecting elbow (4) is fastened to the top of the positioning nail (6), after the nailing device and the positioning nail (6) are fixed, the whole nailing device is rotated by the hand-held pushing rod (1), the whole forward-tilting angle indicator (5) is driven to rotate, and when the force line rod (5-2) is rotated back to the horizontal position, the rotation angle of the positioning nail (6) is the forward tilting angle.
2. The femoral neck anteversion indicator of claim 1, wherein: the water level is characterized by further comprising a water level (5-7), wherein the other end of the force line rod (5-2) is provided with a socket (5-21) which is spliced with the water level (5-7), and the water level (5-7) is detachably spliced in the socket (5-21).
3. The femoral neck anteversion indicator of claim 1, wherein: the tightness screw (5-5) is a claw screw.
4. The femoral neck anteversion indicator of claim 1, wherein: the length of the force line rod (5-2) is 5-10cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810998019.8A CN108938073B (en) | 2018-08-29 | 2018-08-29 | Femoral neck anteversion angle indicator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810998019.8A CN108938073B (en) | 2018-08-29 | 2018-08-29 | Femoral neck anteversion angle indicator |
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| CN108938073A CN108938073A (en) | 2018-12-07 |
| CN108938073B true CN108938073B (en) | 2023-09-22 |
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| CN107149490A (en) * | 2017-05-18 | 2017-09-12 | 汤向阳 | A kind of complete positioner of artificial full hip-joint replacement |
| CN206818084U (en) * | 2017-05-19 | 2017-12-29 | 上海江南长兴重工有限责任公司 | Multifunctional angle scale |
| CN108451631A (en) * | 2018-02-13 | 2018-08-28 | 邓婉坤 | A kind of neck of femur hollow screw guide pin positioning device and application method |
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| CN108938073A (en) | 2018-12-07 |
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