CN112075984A - Minimally invasive accurate positioning device for femoral intercondylar fracture screw - Google Patents
Minimally invasive accurate positioning device for femoral intercondylar fracture screw Download PDFInfo
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- CN112075984A CN112075984A CN202011124799.7A CN202011124799A CN112075984A CN 112075984 A CN112075984 A CN 112075984A CN 202011124799 A CN202011124799 A CN 202011124799A CN 112075984 A CN112075984 A CN 112075984A
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- sleeve
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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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/74—Devices for the head or neck or trochanter of the femur
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/808—Instruments for holding or positioning bone plates, or for adjusting screw-to-plate locking mechanisms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
-
- 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 invention discloses a minimally invasive accurate positioning device for a femoral intercondylar fracture screw, which belongs to the technical field of medical treatment and comprises a positioning sleeve, a needle inserting assembly and external threads, wherein one end of the positioning sleeve is fixedly arranged on the outer surface of the needle inserting assembly, and the needle inserting assembly consists of a sleeve outer edge, a mounting bearing, a needle inserting sleeve, a rotary threaded shaft, a knob, an outer top spring, an arc-shaped guider and disinfection wiping cotton; according to the femoral intercondylar fracture screw fixing device, the needle inserting assembly is mounted, the diameter of the needle inserting sleeve can accommodate the size of an internal fixing screw, the needle inserting sleeve part can be screwed into the fracture end to be pressurized, the sleeve parts of the needle inserting and the needle discharging part are provided with sawtooth structures to assist in fixing at positions close to the bone surface, the needle inserting assembly can be used for pressurizing the fracture end to assist in inserting the kirschner wire and assist in fixing the screw and a steel plate firmly, details can be adjusted according to clinical medical application conditions, so that the positioning is accurate, the operation is minimally invasive, accurate positioning of the femoral intercondylar fracture screw is realized, and a safe and efficient femoral intercondylar fracture internal fixing operation mode is pursued.
Description
Technical Field
The invention belongs to the technical field of medical treatment, and particularly relates to a minimally invasive accurate positioning device for an intercondylar fracture screw of a femoral bone.
Background
Femoral intercondylar fracture is usually caused by wedge force of double condylar fracture caused by direct external force or knee joint straightening position or buckling position, and femoral intercondylar fracture can be caused by indirect external force in different directions. The disease is easy to cause bone block separation without collapse, is easy to cause T-shaped, Y-shaped, V-shaped and crushing-type fractures, is difficult to restore and maintain to restore, causes damage to femoral condyles, tibial platforms and patellofemoral joints, changes the normal anatomical axis and mechanical axis of knee joints, and damages the normal load and conduction of the knee joints. Therefore, the femoral intercondylar fracture with poor reduction needs to be subjected to early open reduction and internal fixation. Currently, the commonly used internal fixation mode for femoral intercondylar fracture mainly comprises bone bolt and steel plate screw fixation (detailed in patent document CN203408092U) and L-shaped steel plate and lag screw fixation (detailed in patent document CN202942205U), and long screws, steel wires and other internal fixation objects are used according to fracture types and displacement conditions in operation to seek for the completeness of the recovered articular surface, which is beneficial to the recovery of lower limb functions.
Chinese patent discloses (CN109009399A) a precise positioning device for a hollow nail for femoral neck fracture and (CN110584765A) a double-bone plate for supracondylar fracture of femur, and innovations are carried out by combining the femoral intercondylar fracture type and the basic requirement of an internal fixation operation type. The front invention realizes the arbitrary angle adjustment of the femoral neck central guide tube without additional fixing nails and fixing frames attached to the position of the femoral neck, thereby greatly improving the aiming success rate of the femoral neck guide pin under the non-invasive condition. The latter invention changes the traditional positioning after the bone fracture plate is placed into the traditional positioning by the traction needle and then the traditional positioning after the bone fracture plate is placed into the bone fracture plate to be matched with the traditional positioning, thereby realizing the rapid and accurate positioning, and solving the problem that the traditional bone fracture plate can not effectively fix the complicated fracture of the femoral condyle.
In the process of implementing the scheme, the following problems in the prior art are found and not well solved, for example, the fixing mode of fixing the bone bolt and the steel plate screw in the patent document (CN203408092U) is firm, but the screw cannot be accurately positioned in the operation, and multiple nailing is easy to occur, which causes a certain damage, the fixing mode of the L-shaped steel plate and the tension screw in the patent document (CN203408092U) is accurate in positioning, but the fixing firmness is not as good as the fixing mode of the bone bolt and the steel plate screw, because the L-shaped locking steel plate is subjected to larger stress, a plurality of tension screws are needed during fixing, which causes a certain damage, the accurate positioning device of the femoral neck fracture hollow nail in the patent document (CN109009399A) is firm and accurate in positioning, but is mainly applicable to femoral neck fracture, and for T-, Y-, V-and comminuted femoral intercondylar fractures, the fracture adjustment device structure is needed to adapt to the internal fixation type, certain improvements are needed.
Disclosure of Invention
The invention aims to: in order to solve the problem that the traditional positioning device cannot realize accurate positioning of screws in the operation, multiple nailing is easy to occur, certain damage is caused, the stress borne by an L-shaped locking steel plate is large in the traditional positioning device, a plurality of tension screws are needed during fixing, certain damage is caused, the traditional positioning device is mainly suitable for femoral neck fracture, and for T-shaped, Y-shaped, V-shaped and crushing-type femoral intercondylar fracture, the problem that the structure of the device needs to be adjusted to adapt to the internal fixation type of the fracture is solved, and the provided femoral intercondylar fracture screw minimally invasive accurate positioning device.
In order to achieve the purpose, the invention adopts the following technical scheme: femoral intercondylar fracture screw minimally invasive accurate positioning device comprises a positioning sleeve, an insertion needle assembly and external threads, wherein one end of the positioning sleeve is fixedly installed on the outer surface of the insertion needle assembly, and the insertion needle assembly is composed of a sleeve outer edge, an installation bearing, an insertion needle sleeve, a rotary threaded shaft, a knob, an outer ejection spring, an arc-shaped guider and disinfection wiping cotton.
As a further description of the above technical solution:
the mounting bearing is fixedly mounted on the outer wall of one side of the needle insertion sleeve, and a rotary threaded shaft is rotatably mounted in the mounting bearing.
As a further description of the above technical solution:
and one end of the rotary threaded shaft is fixedly provided with a knob, and one end of the needle insertion sleeve is fixedly provided with a sleeve outer edge.
As a further description of the above technical solution:
and external threads are arranged on the upper surface of the positioning sleeve and the outer part of the rotary threaded shaft.
As a further description of the above technical solution:
one end of the positioning sleeve penetrates through the needle inserting sleeve, and the rotary threaded shaft is in threaded connection with the positioning sleeve.
As a further description of the above technical solution:
an inner hollow cavity is formed in the needle insertion sleeve, and an outer top spring is fixedly mounted on the inner wall of the inner hollow cavity.
As a further description of the above technical solution:
an arc-shaped guider is fixedly mounted at one end of the outer ejection spring, and disinfection wiping cotton is fixedly mounted on the outer wall of one side of the arc-shaped guider.
As a further description of the above technical solution:
four outer top springs, four arc-shaped guides and four disinfection wiping cottons are regularly arranged.
As a further description of the above technical solution:
the positioning sleeve is of an elastic solid structure, and the needle inserting sleeve is of a hollow structure.
The invention also discloses a using method of the minimally invasive accurate positioning device for the femoral intercondylar fracture screw, which comprises the following steps:
s1, screwing one end of the needle insertion sleeve 23 of the needle insertion component 2 into the fracture end;
s2, sleeving the positioning sleeve 1 outside the bone, adjusting the length of the positioning sleeve 1 at the moment, and binding the outside of the fracture;
s3, the rotary threaded shaft 24 is directly rotated through the knob 25, and the rotary threaded shaft 24 can drive the positioning sleeve 1 to move, so that the length of the positioning sleeve 1 is adjusted until the length of the positioning sleeve 1 is convenient for binding the outside of the fracture;
s4, when the human fracture part is fixed, the Kirschner wire is inserted into the needle insertion sleeve 23 until the Kirschner wire penetrates into the fracture part;
s5, sawtooth structures are arranged at the positions, close to the bone surface, of the sleeve of the needle inserting and needle withdrawing parts to assist in fixing, and the positioning sleeve 1 is used for pressurizing the fracture end to assist in inserting the Kirschner wire and assist in fixing the screw and the steel plate firmly;
s6, the sterilizing and wiping cotton 28 can simultaneously perform the sterilizing and cleaning functions on the Kirschner wire when the Kirschner wire is inserted, so that the cleanliness of the Kirschner wire is ensured, and the Kirschner wire is driven into the fracture of a patient;
s7, the arc-shaped guide 27 can calibrate the driving direction of the Kirschner wire, so as to avoid the crooked driving.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, the needle inserting assembly is installed, the needle inserting assembly comprises a sleeve outer edge, an installation bearing, a needle inserting sleeve and the like, the needle inserting sleeve is of an alloy hollow structure, the diameter of the needle inserting sleeve can accommodate the size of an internal fixing screw, the needle inserting sleeve part can be screwed into a fracture end to be pressurized, the needle inserting part and the needle withdrawing part of the sleeve are provided with sawtooth structures near the fracture end to assist in fixing, and the needle inserting assembly can be used for pressurizing the fracture end to assist in inserting a kirschner wire and assist in fixing the screw and a steel plate firmly.
2. According to the invention, the positioning sleeve is arranged, the positioning sleeve is of an elastic solid structure, the arc shape of the positioning sleeve can span the longest circumference of the condyle of the femur of a normal adult, and the position of a needle outlet position can be adjusted by adjusting a knob at the joint. The fixing device has the advantages that accurate positioning of the Kirschner wire is assisted, the screw and the steel plate are assisted to be fixed firmly, the fixing stability is further improved, and the use is convenient.
3. According to the invention, the arc-shaped guider is arranged, so that the stability of the puncture needle can be effectively ensured when the puncture needle of the Kirschner wire is punctured, the direction can be effectively controlled, repeated puncture is reduced, the damage to the vascular nerve is avoided, meanwhile, the disinfection wiping cotton is arranged on the inner wall of the arc-shaped guider, the sterilization cleaning effect can be simultaneously performed on the Kirschner wire when the puncture needle of the Kirschner wire is punctured, and the function is strong.
4. According to the invention, the device can adjust details according to clinical medical application conditions, so that the positioning is accurate, the minimally invasive operation is realized, and the accurate positioning of the intercondylar fracture screw of the femur is realized, so as to pursue a safe and efficient intercondylar fracture internal fixation manner.
Drawings
Fig. 1 is a front view of a femoral intercondylar fracture screw minimally invasive precision positioning device.
Fig. 2 is a top view of a minimally invasive precision positioning device for an intercondylar fracture screw of a femur.
Fig. 3 is an enlarged structural schematic diagram of a side view of an needle inlet assembly in the minimally invasive precision femoral intercondylar fracture screw positioning device.
Fig. 4 is a schematic perspective structure view of an needle insertion assembly in the minimally invasive precise positioning device for the femoral intercondylar fracture screw.
Illustration of the drawings:
1. positioning the sleeve; 2. a needle insertion assembly; 21. the outer edge of the sleeve; 22. mounting a bearing; 23. inserting a needle sleeve; 24. rotating the threaded shaft; 25. a knob; 26. an outer top spring; 27. an arc-shaped guider; 28. disinfecting and wiping cotton; 29. an inner hollow cavity; 3. and (4) external threads.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: the minimally invasive accurate positioning device for the femoral intercondylar fracture screw comprises a positioning sleeve 1, an insertion needle assembly 2 and external threads 3, wherein one end of the positioning sleeve 1 is fixedly installed on the outer surface of the insertion needle assembly 2, and the insertion needle assembly 2 consists of a sleeve outer edge 21, an installation bearing 22, an insertion needle sleeve 23, a rotary threaded shaft 24, a knob 25, an external top spring 26, an arc-shaped guider 27 and disinfection wiping cotton 28;
the needle inserting device is characterized in that the mounting bearing 22 is fixedly mounted on the outer wall of one side of the needle inserting sleeve 23, the rotating threaded shaft 24 is rotatably mounted in the mounting bearing 22, a knob 25 is fixedly mounted at one end of the rotating threaded shaft 24, the outer edge 21 of the sleeve is fixedly mounted at one end of the needle inserting sleeve 23, the outer threads 3 are respectively arranged on the upper surface of the positioning sleeve 1 and the outer edge of the rotating threaded shaft 24, one end of the positioning sleeve 1 penetrates through the needle inserting sleeve 23, the rotating threaded shaft 24 is in threaded connection with the positioning sleeve 1, the mounting bearing 22 is fixedly mounted on the outer wall of one side of the needle inserting sleeve 23, the rotating threaded shaft 24 is rotatably mounted in the mounting bearing 22, the knob 25 is fixedly mounted at one end of the rotating threaded shaft 24, the outer edge 21 of the sleeve is fixedly mounted at one end of the needle inserting sleeve 23, and the outer threads 3 are, one end of the positioning sleeve 1 penetrates through the needle inserting sleeve 23, the rotary threaded shaft 24 is in threaded connection with the positioning sleeve 1, the arc-shaped positioning sleeve 1 can stride over the longest circumference of the condyle of a normal adult femur, and the knob 25 at the joint is adjusted to adjust the needle outlet position, so that the accurate positioning of the needle outlet of the Kirschner wire is assisted, the fixation of a screw and a steel plate is assisted, the fixation stability is further improved, the use is convenient, when the overall length of the positioning sleeve 1 needs to be adjusted, the rotary threaded shaft 24 is directly rotated through the knob 25, and the rotary threaded shaft 24 can drive the positioning sleeve 1 to move, so that the length adjustment of the positioning sleeve 1 is completed, and the adjustment is quick and effective;
an inner hollow cavity 29 is formed in the needle inserting sleeve 23, an outer top spring 26 is fixedly mounted on the inner wall of the inner hollow cavity 29, an arc-shaped guider 27 is fixedly mounted at one end of the outer top spring 26, disinfection wiping cotton 28 is fixedly mounted on the outer wall of one side of the arc-shaped guider 27, four outer top springs 26, four arc-shaped guider 27 and four disinfection wiping cotton 28 are regularly mounted on the inner wall of the inner hollow cavity 29, the positioning sleeve 1 is of an elastic solid structure, the needle inserting sleeve 23 is of a hollow structure, the disinfection wiping cotton 28 is fixedly mounted on the outer wall of one side of the arc-shaped guider 27, four outer top springs 26, four arc-shaped guider 27 and the disinfection wiping cotton 28 are regularly mounted on the inner wall of the inner hollow cavity 29, the positioning sleeve 1 is of the elastic solid structure, the needle inserting sleeve 23 is of a hollow structure, when the Kirschner wire is inserted, the arc-shaped guider 27 can effectively ensure the stability of the insertion, the direction can be effectively controlled, repeated puncture is reduced, the vascular nerve is prevented from being damaged, the sterilizing and cleaning cotton 28 can simultaneously perform the sterilizing and cleaning effects on the Kirschner wire when the Kirschner wire is inserted, and the function is strong;
the invention also discloses a using method of the minimally invasive accurate positioning device for the femoral intercondylar fracture screw, which comprises the following steps:
s1, screwing one end of the needle insertion sleeve 23 of the needle insertion component 2 into the fracture end;
s2, sleeving the positioning sleeve 1 outside the bone, adjusting the length of the positioning sleeve 1 at the moment, and binding the outside of the fracture;
s3, the rotary threaded shaft 24 is directly rotated through the knob 25, and the rotary threaded shaft 24 can drive the positioning sleeve 1 to move, so that the length of the positioning sleeve 1 is adjusted until the length of the positioning sleeve 1 is convenient for binding the outside of the fracture;
s4, when the human fracture part is fixed, the Kirschner wire is inserted into the needle insertion sleeve 23 until the Kirschner wire penetrates into the fracture part;
s5, sawtooth structures are arranged at the positions, close to the bone surface, of the sleeve of the needle inserting and needle withdrawing parts to assist in fixing, and the positioning sleeve 1 is used for pressurizing the fracture end to assist in inserting the Kirschner wire and assist in fixing the screw and the steel plate firmly;
s6, the sterilizing and wiping cotton 28 can simultaneously perform the sterilizing and cleaning functions on the Kirschner wire when the Kirschner wire is inserted, so that the cleanliness of the Kirschner wire is ensured, and the Kirschner wire is driven into the fracture of a patient;
s7, the arc-shaped guide 27 can calibrate the driving direction of the Kirschner wire, so as to avoid the crooked driving.
The working principle is as follows: when the whole length of position sleeve 1 is adjusted to needs, directly through the rotatory screw thread axle 24 of knob 25, rotatory screw thread axle 24 can drive position sleeve 1 and remove, thereby accomplish the length adjustment to position sleeve 1, it is quick effective to adjust, fix to human skeleton, when carrying out the kirschner wire needle threading, the stability of needle threading can effectively be guaranteed to arc director 27, but the effective control direction, reduce and puncture repeatedly, avoid haring the vascular nerve, disinfection wiping cotton 28 can carry out the disinfection cleaning action to the kirschner wire simultaneously when carrying out the kirschner wire needle threading, guarantee the cleanliness of kirschner wire, thereby squeeze into patient's fracture department with the kirschner wire.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. Accurate positioner of femoral intercondylar fracture screw wicresoft, including position sleeve (1), needle subassembly (2) and external screw thread (3), its characterized in that: one end of the positioning sleeve (1) is fixedly arranged on the outer surface of the needle inserting assembly (2), and the needle inserting assembly (2) consists of a sleeve outer edge (21), a mounting bearing (22), a needle inserting sleeve (23), a rotary threaded shaft (24), a knob (25), an outer top spring (26), an arc-shaped guider (27) and disinfection wiping cotton (28).
2. The minimally invasive precise positioning device for the femoral intercondylar fracture screw according to claim 1, characterized in that the mounting bearing (22) is fixedly installed on the outer wall of one side of the needle insertion sleeve (23), and a rotary threaded shaft (24) is rotatably installed in the mounting bearing (22).
3. The minimally invasive precise positioning device for the femoral intercondylar fracture screw according to claim 2, characterized in that a knob (25) is fixedly mounted at one end of the rotary threaded shaft (24), and a sleeve outer edge (21) is fixedly mounted at one end of the needle insertion sleeve (23).
4. The minimally invasive precise positioning device for the femoral intercondylar fracture screw according to claim 3, characterized in that the upper surface of the positioning sleeve (1) and the exterior of the rotary threaded shaft (24) are both provided with external threads (3).
5. The minimally invasive precise positioning device for the femoral intercondylar fracture screw according to claim 4, characterized in that one end of the positioning sleeve (1) penetrates through the needle insertion sleeve (23), and the rotary threaded shaft (24) is in threaded connection with the positioning sleeve (1).
6. The minimally invasive accurate positioning device for the femoral intercondylar fracture screw according to claim 5, characterized in that an inner hollow cavity (29) is formed inside the needle insertion sleeve (23), and an outer top spring (26) is fixedly mounted on the inner wall of the inner hollow cavity (29).
7. The minimally invasive accurate positioning device for the femoral intercondylar fracture screw according to claim 6, characterized in that one end of the external top spring (26) is fixedly provided with an arc-shaped guider (27), and the outer wall of one side of the arc-shaped guider (27) is fixedly provided with a sterilized wiping cotton (28).
8. The minimally invasive precise positioning device for the femoral intercondylar fracture screw according to claim 1, characterized in that four external top springs (26), arc-shaped guides (27) and sterile wiping cotton (28) are regularly arranged.
9. The minimally invasive precise positioning device for the femoral intercondylar fracture screw according to claim 1, characterized in that the positioning sleeve (1) is of an elastic solid structure, and the needle insertion sleeve (23) is of a hollow structure.
10. The method for using the femoral intercondylar fracture screw minimally invasive precision positioning device according to claims 1-9, characterized by comprising the following steps:
s1, screwing one end of the needle insertion sleeve (23) of the needle insertion component (2) into the fracture end;
s2, sleeving the positioning sleeve (1) outside the bone, adjusting the length of the positioning sleeve (1) at the moment, and binding the outside of the fracture;
s3, the threaded shaft (24) is directly rotated through the knob (25), and the threaded shaft (24) is rotated to drive the positioning sleeve (1) to move, so that the length of the positioning sleeve (1) is adjusted until the length of the positioning sleeve (1) is convenient for binding the outside of the fracture;
s4, when the fracture part of the human body is fixed, the Kirschner wire is penetrated into the needle insertion sleeve (23) until the Kirschner wire penetrates into the fracture part;
s5, sawtooth structures are arranged at the positions, close to the bone surface, of the sleeve of the needle inserting and needle withdrawing parts to assist in fixing, and the positioning sleeve (1) is used for pressurizing the fracture end to assist in inserting the Kirschner wire and assist in fixing the screw and the steel plate firmly;
s6, when the Kirschner wire is inserted, the sterilizing wiping cotton (28) can simultaneously perform the sterilizing and cleaning effects on the Kirschner wire, so that the cleanliness of the Kirschner wire is ensured, and the Kirschner wire is driven into the fracture of a patient;
s7, the arc-shaped guide (27) can calibrate the driving direction of the Kirschner wire to avoid the crooked driving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011124799.7A CN112075984A (en) | 2020-10-20 | 2020-10-20 | Minimally invasive accurate positioning device for femoral intercondylar fracture screw |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011124799.7A CN112075984A (en) | 2020-10-20 | 2020-10-20 | Minimally invasive accurate positioning device for femoral intercondylar fracture screw |
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| CN112075984A true CN112075984A (en) | 2020-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011124799.7A Pending CN112075984A (en) | 2020-10-20 | 2020-10-20 | Minimally invasive accurate positioning device for femoral intercondylar fracture screw |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113940748A (en) * | 2021-10-08 | 2022-01-18 | 云阳县人民医院 | Needle threading positioner for supracondylar fracture of humerus |
-
2020
- 2020-10-20 CN CN202011124799.7A patent/CN112075984A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113940748A (en) * | 2021-10-08 | 2022-01-18 | 云阳县人民医院 | Needle threading positioner for supracondylar fracture of humerus |
| CN113940748B (en) * | 2021-10-08 | 2023-04-04 | 云阳县人民医院 | Needle threading positioner for supracondylar fracture of humerus |
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