CN220967390U - Angle device for accurately controlling femoral neck bone guide needle implantation angle - Google Patents
Angle device for accurately controlling femoral neck bone guide needle implantation angle Download PDFInfo
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- CN220967390U CN220967390U CN202321933801.4U CN202321933801U CN220967390U CN 220967390 U CN220967390 U CN 220967390U CN 202321933801 U CN202321933801 U CN 202321933801U CN 220967390 U CN220967390 U CN 220967390U
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- angle
- flat plate
- guide tube
- femoral neck
- plate
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- 210000002436 femur neck Anatomy 0.000 title claims abstract description 30
- 238000002513 implantation Methods 0.000 title description 2
- 238000003780 insertion Methods 0.000 claims abstract description 15
- 230000037431 insertion Effects 0.000 claims abstract description 15
- 230000000295 complement effect Effects 0.000 claims abstract description 4
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000004904 shortening Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 210000000689 upper leg Anatomy 0.000 description 11
- 210000003739 neck Anatomy 0.000 description 10
- 208000020089 femoral neck fracture Diseases 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000002594 fluoroscopy Methods 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
The utility model belongs to the field of orthopaedics medical equipment, in particular to an angle device for accurately controlling the placement angle of a femoral neck bone guide needle, which can place the femoral neck guide needle into a femoral neck according to a planned neck shaft angle and a planned forward inclination angle; the instrument comprises a flat plate, a positioning surface and a guide tube; the first plate surface of the flat plate is provided with angle scales, the positioning surface is connected with the flat plate at the second plate surface side of the flat plate, and the included angle between the positioning surface and the first plate surface is equal to the complementary angle of the neck trunk angle; the guide tube is used for guiding the guide needle to slide linearly, the guide tube and the flat plate are rotatably combined together at the center point of the angle scale, and the guide tube is positioned at the side of the first plate surface; the angle device for accurately controlling the insertion angle of the femoral neck bone guide pin provided by the utility model is convenient for an operator to operate, can quickly determine the angle of the hollow nail guide pin, is beneficial to shortening the operation time and reducing the perspective times. The technique is simple and practical, and is helpful for reducing the learning curve of the operator.
Description
Technical Field
The utility model belongs to the field of orthopedic medical instruments, and particularly relates to a method for quantitatively placing a guide pin angle of a hollow nail of a femoral neck into the femoral neck to treat femoral neck fracture.
Background
The percutaneous hollow nail internal fixation is a classical femoral neck fracture treatment method. Studies show that three hollow nails are in an inverted triangle shape, the femoral neck is placed in parallel, and the screw is as close to the cortex of the femoral neck as possible, so that strong biomechanics can be provided. Hollow pin guide pin placement is the key to successful surgery. The guide pin is required to be drilled into the femoral neck at a suitable angle at a suitable needle insertion point. Suitable angles include a neck finish angle and a rake angle. In clinical work, the operator mainly depends on personal experience to complete the insertion of the hollow nail guide needle. The neck shaft angle of the femoral neck hollow pin guide pin is usually determined by an operator by taking the skin at the proximal end of the thigh as a reference, but the angle is in a certain error in visual inspection, and the guide pin is drilled into the outer cortex of the femur at an acute angle, so that the guide pin is easy to deviate and change in angle when drilled into the guide pin. The determination of the anteversion angle is a main difficulty in the placement of the guide needle, and the difficulty in the determination of the anteversion angle is increased due to the difference of the anteversion angles of the femoral necks of patients and the difference of the rotation degrees of the lower limbs during the reduction in operation.
Using a smart phone, the authors successfully planned and measured the anteversion angle of femoral neck reposition. The device can quantitatively put the neck shaft angle and the forward dip angle of the femur into the femur neck, thereby greatly improving the success rate of nail placement.
Disclosure of utility model
The utility model aims to solve the problem that the positioning difficulty of the neck stem angle and the anteversion angle of the femur is high when the hollow nail guide needle is placed.
The utility model provides the following technical scheme: an angle device for accurately controlling the insertion angle of a femoral neck bone guide pin comprises a flat plate, a positioning surface and a guide tube; the first plate surface of the flat plate is provided with angle scales, the positioning surface is connected with the flat plate at the second plate surface side of the flat plate, and the included angle between the positioning surface and the first plate surface is equal to the complementary angle of the neck trunk angle;
The guide tube is used for guiding the guide needle to slide linearly, the guide tube and the flat plate are rotatably combined together at the center point of the angle scale, and the guide tube is positioned on the side of the first plate surface.
Further, a corner locking mechanism is arranged between the guide tube and the flat plate.
Further, a hole is formed in the center point of the angle scale of the flat plate, the guide tube is connected with the flat plate through a connecting sheet, the connecting sheet is provided with a hole, the flat plate and the connecting sheet are connected together through screws penetrating through the holes, and the penetrating ends of the screws are connected with nuts through threads.
Further, a hole is formed in the center point of the angle scale of the flat plate, the guide tube is connected with the flat plate through a connecting sheet, the connecting sheet is provided with a hole, and the flat plate and the connecting sheet are connected together through rivets penetrating through the holes.
Further, the member forming the positioning surface is a straight plate, and the straight plate is fixedly connected with the flat plate.
Further, the middle scale of the angle scale of the flat plate is 0 degrees, and the two sides are 0 degrees to 90 degrees.
Further, the included angle between the positioning surface and the first plate surface is 45 degrees.
Compared with the prior art, the utility model has the advantages that:
The angle device for accurately controlling the insertion angle of the femoral neck bone guide pin provided by the utility model is convenient for an operator to operate, can quickly determine the angle of the hollow nail guide pin, is beneficial to shortening the operation time and reducing the perspective times. The technique is simple and practical, and is helpful for reducing the learning curve of the operator.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a side view of the present utility model;
FIG. 3 is an exploded view of the present utility model;
FIG. 4 is a schematic view of the neck finish angle positioning;
FIG. 5 is a diagram of forward tilt positioning;
In the figure: 1-a plate; 1.1-a first plate surface; 1.2-a second plate surface; 2-a guide tube; 3-a guide pin; 4-positioning surface; 5-nuts; 6-connecting sheets; 7-a gasket; 8-screws; a-thigh lateral skin; b-femur.
Detailed Description
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
As shown in fig. 1 and 2: an angle device for accurately controlling the insertion angle of a femoral neck bone guide pin comprises a flat plate 1, a positioning surface 4 and a guide tube 2; the first plate surface 1.1 of the flat plate 1 is provided with angle scales, the positioning surface 4 is connected with the flat plate 1 at the second plate surface 1.2 side of the flat plate 1, and the included angle between the positioning surface 4 and the first plate surface 1.1 is equal to the complementary angle of the neck dry angle. Specifically, the included angle between the positioning surface 4 and the first plate surface 1.1 is 45 °.
The guide tube 2 is used for guiding the guide needle 3 to slide linearly, the guide tube 2 and the flat plate 1 are rotatably combined together at the center point of the angle scale, and the guide tube 2 is positioned on the first plate surface 1.1 side.
Be equipped with corner locking mechanism between stand pipe 2 and the dull and stereotyped 1, stand pipe 2 rotates relative dull and stereotyped 1 and changes guide pin 3 puncture angle, and when corner locking mechanism locking stand pipe 2, the contained angle between stand pipe 2 and dull and stereotyped 1 is fixed.
The first connection of the guide tube 2 to the plate 1 is shown in fig. 3: the angle scale center point of the flat plate 1 is provided with a hole, the guide tube 2 is connected with the flat plate 1 through a connecting sheet 6, the connecting sheet 6 is provided with a hole, the flat plate 1 and the connecting sheet 6 are connected together in series by a screw 8 penetrating through the hole, and the penetrating end of the screw 8 is connected with a nut 5 in a threaded manner. The nut 5 is a hollow cylinder, the connecting piece 6 can rotate freely relative to the flat plate 1 after the nut 5 is loosened, the connecting piece 6 and the flat plate 1 are clamped by matching with the screw 8 after the nut 5 is screwed, the connecting piece 6 can not rotate, and the angle of the guide tube 2 is fixed.
The second connection mode of the guide tube 2 and the flat plate 1 is as follows: the center point of the angle scale of the flat plate 1 is provided with a hole, the guide tube 2 is connected with the flat plate 1 through a connecting sheet 6, the connecting sheet 6 is provided with a hole, and the flat plate 1 and the connecting sheet 6 are connected together by a rivet penetrating through the holes. The rivet connects the plate 1 and the connecting piece 6 more tightly together, the closer explanation being: the connecting piece 6 and the flat plate 1 have certain resistance to relative rotation, and the guide tube 2 is prevented from swinging freely.
The third connection mode of the guide tube 2 and the flat plate 1 is as follows: the guide tube 2 is directly connected with the flat plate 1 through a structure similar to a rotating shaft, and the guide tube 2 passes through the center point of the angle scale.
Of course, the purpose of this connection, whether it be the same or other, is to achieve: the guide tube 2 is rotatably combined with the flat plate 1 at the center point of the angle scale, i.e., the swing angle of the guide tube 2 is fed back through the angle scale.
The member forming the positioning surface 4 is a straight plate, and the straight plate is fixedly connected with the flat plate 1.
The middle scale of the angle scale of the flat plate 1 is 0 degrees, and the two sides of the angle scale are 0 degrees to 90 degrees, so that the angle change of the guide needle 3 can be observed in a bidirectional manner.
The flat plate 1, the guide pin 3, the nut 5, the guide tube 2, the connecting sheet 6, the gasket 7, the screw 8 and the straight plate forming the positioning surface 4 are all made of stainless steel, the straight plate forming the positioning surface 4 is welded with the flat plate 1, and the guide tube 2 is welded with the connecting sheet 6.
As shown in fig. 4 and 5: after the medical anesthesia, the patient lies on the operation traction bed. All femoral neck fractures are closed for reduction under G-arm or C-arm fluoroscopy. After satisfactory reset, a Kirschner wire with a diameter of 2.5mm is stuck on the surface of the G arm or C arm receiver and is parallel to the ground. And (3) performing side perspective again, rotating the picture on a G-arm or C-arm display until the Kirschner wire image is parallel to the ground, and photographing and storing the side image. And opening the stored picture in picture editing software, clicking a mark to plan that the hollow nail guide pin runs in the femoral neck, rotating the picture to enable a red dotted line to be parallel to the ground, and enabling the rotation angle to be the front inclination angle of the guide pin.
And a guide needle penetrates through soft tissues to the outer cortex of the femur through a guide tube 2 at a position which is one palm away from the vertex of the femur tuberosity, touches the front and rear edges of the femur, drills a Kirschner wire into the cortex surface layer vertically in the middle of the front and rear edges of the femur, and gradually inclines to the foot side from the tail of the guide needle until the steel needle is vertical to the thigh skin. After the first guide pin is placed at a proper angle, a parallel guide or a proper needle insertion point is selected by bare hands to place the rest guide pins. Finally, the length of the guide pin is measured, and a proper hollow nail is screwed in.
A k-wire parallel ground was attached to either the G-arm or C-arm receiver and the resulting picture was side-view drilled into the femoral neck just as it was with a parallel ground. The lead rake angle and the insertion lead are then determined with reference to the horizontal plane. Through the intelligent mobile phone and the picture editing software, the direction of the guide pin in the femoral neck is planned first, and the front inclination angle of the guide pin is calculated. After the forward tilt angle is determined, a guide is applied to assist in the placement of the lead 3. The guide aids in determining the neck shaft angle on the one hand and the guide tube 2 prevents the guide pin 3 from sliding in the femoral cortex and changing angle when the guide pin is drilled in. The angle between the positioning surface 4 and the flat plate 1 is 45 degrees, and when the positioning surface 4 is perpendicular to thigh skin, the angle between the guide needle 3 which is drilled into the femoral neck through the guide tube 2 and the femoral axis is 135 degrees. If the neck dry angle is increased or decreased, the included angle between the positioning surface 4 and the thigh skin can be an obtuse angle or an acute angle. When the positioning surface 4 is perpendicular to the skin, the surgeon points the guide tube 2 at a corresponding angle to insert the guide pin 3 into the femoral neck at a precise angle. Thus, the guide needle 3 is successfully placed in one step basically with proper front inclination angle and neck dry angle, thereby reducing repeated drilling holes caused by empirically drilling and adjusting the guide needle angle in the past, repeated perspective and shortening the operation time. The operator then selects the appropriate insertion point to drill into the remaining leads parallel to the lead.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. An angle ware of accurate control femur neck bone guide pin angle of putting into, its characterized in that: comprises a flat plate (1), a positioning surface (4) and a guide tube (2); the first plate surface (1.1) of the flat plate (1) is provided with angle scales, the positioning surface (4) is connected with the flat plate (1) at the side of the second plate surface (1.2) of the flat plate (1), and the included angle between the positioning surface (4) and the first plate surface (1.1) is equal to the complementary angle of the neck dry angle;
The guide tube (2) is used for guiding the guide needle (3) to slide linearly, the guide tube (2) and the flat plate (1) are rotatably combined together at the center point of the angle scale, and the guide tube (2) is positioned on the side of the first plate surface (1.1).
2. The angle gauge for precisely controlling the insertion angle of a femoral neck guide pin according to claim 1, wherein: a corner locking mechanism is arranged between the guide tube (2) and the flat plate (1).
3. The angle gauge for precisely controlling the insertion angle of a femoral neck guide pin of claim 2, wherein: the angle scale center point of the flat plate (1) is provided with a hole, the guide tube (2) is connected with the flat plate (1) through the connecting sheet (6), the connecting sheet (6) is provided with a hole, the flat plate (1) and the connecting sheet (6) are connected together in series by a screw (8) penetrating through the hole, and the penetrating end of the screw (8) is connected with the nut (5) through threads.
4. The angle gauge for precisely controlling the insertion angle of a femoral neck guide pin of claim 1, wherein: the angle scale center point of the flat plate (1) is provided with a hole, the guide tube (2) is connected with the flat plate (1) through the connecting sheet (6), the connecting sheet (6) is provided with a hole, and the flat plate (1) and the connecting sheet (6) are connected together by rivets penetrating through the holes.
5. The angle gauge for precisely controlling the insertion angle of a femoral neck guide pin according to claim 3 or 4, wherein: the component forming the positioning surface (4) is a straight plate, and the straight plate is fixedly connected with the flat plate (1).
6. The angle gauge for precisely controlling the insertion angle of a femoral neck guide pin of claim 1, wherein: the middle scale of the angle scale of the flat plate (1) is 0 degrees, and the two sides are 0-90 degrees.
7. The angle gauge for precisely controlling the insertion angle of a femoral neck guide pin of claim 1, wherein: the included angle between the positioning surface (4) and the first plate surface (1.1) is 45 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321933801.4U CN220967390U (en) | 2023-07-21 | 2023-07-21 | Angle device for accurately controlling femoral neck bone guide needle implantation angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321933801.4U CN220967390U (en) | 2023-07-21 | 2023-07-21 | Angle device for accurately controlling femoral neck bone guide needle implantation angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220967390U true CN220967390U (en) | 2024-05-17 |
Family
ID=91041136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321933801.4U Active CN220967390U (en) | 2023-07-21 | 2023-07-21 | Angle device for accurately controlling femoral neck bone guide needle implantation angle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220967390U (en) |
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2023
- 2023-07-21 CN CN202321933801.4U patent/CN220967390U/en active Active
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