CN116370019A - Reaming device for implanting low-notch femoral neck fracture internal fixation sliding sleeve - Google Patents

Reaming device for implanting low-notch femoral neck fracture internal fixation sliding sleeve Download PDF

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Publication number
CN116370019A
CN116370019A CN202310417960.7A CN202310417960A CN116370019A CN 116370019 A CN116370019 A CN 116370019A CN 202310417960 A CN202310417960 A CN 202310417960A CN 116370019 A CN116370019 A CN 116370019A
Authority
CN
China
Prior art keywords
sleeve
drill bit
stopper
femoral neck
sliding sleeve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310417960.7A
Other languages
Chinese (zh)
Inventor
刘立峰
乔文泽
孙珺
方楠
武乐
何志博
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai East Hospital Tongji University Affiliated East Hospital
Original Assignee
Shanghai East Hospital Tongji University Affiliated East Hospital
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai East Hospital Tongji University Affiliated East Hospital filed Critical Shanghai East Hospital Tongji University Affiliated East Hospital
Priority to CN202310417960.7A priority Critical patent/CN116370019A/en
Publication of CN116370019A publication Critical patent/CN116370019A/en
Pending legal-status Critical Current

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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
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
    • A61B17/1664—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the hip
    • A61B17/1668—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the hip for the upper femur
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1604—Chisels; Rongeurs; Punches; Stamps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1613—Component parts
    • A61B17/1633—Sleeves, i.e. non-rotating parts surrounding the bit shaft, e.g. the sleeve forming a single unit with the bit shaft
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/17—Guides or aligning means for drills, mills, pins or wires
    • A61B17/1721—Guides or aligning means for drills, mills, pins or wires for applying pins along or parallel to the axis of the femoral neck
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/17—Guides or aligning means for drills, mills, pins or wires
    • A61B17/1739—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
    • A61B17/1742—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the hip
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

The invention discloses a reaming device for implanting a fixed sliding sleeve in a low-notch femoral neck fracture, which comprises a guider, wherein a drill bit is arranged on the guider, a limiter is arranged on the drill bit, the limiter is connected with a limiter nut, the guider comprises a T-shaped holding rod, the T-shaped holding rod is connected with the sleeve, a metal plate is arranged at the bottom of the sleeve, an arc-shaped groove is formed in the metal plate, and the drill bit is arranged on the sleeve. The device perfects the matched tools required by the implantation of the internal fixing system for the low-notch femoral neck fracture, so that the reaming operation before the implantation of the sliding sleeve is more convenient. The use of the guide reduces sliding, improves the stability of drilling, and ensures that the hole is matched with the sliding sleeve.

Description

Reaming device for implanting low-notch femoral neck fracture internal fixation sliding sleeve
Technical Field
The invention relates to the technical field of medical equipment, in particular to a reaming device for implanting a low-notch femoral neck fracture internal fixation sliding sleeve.
Background
The internal fixing system for low-notch femur neck fracture is one new type of internal fixing device for femur neck fracture and consists of sliding sleeve, power rod, rotation resisting screw and locking screw. In the biomechanical test of internal fixation of femoral neck fracture, compared with the traditional internal fixation system (Femur Neck System, FNS) of femoral neck fracture, the internal fixation system of low-notch femoral neck fracture provides greater overall structural stability while having the advantages of anti-rotation, anti-shearing force and broken end pressurization of FNS, avoids the problem of non-fitting of nail plate and femur caused by the difference of human femur, reduces the risk of fracture and skin irritation of the nail plate, and can better treat femoral neck fracture.
But the internal fixation system for low-notch femoral neck fractures lacks a matched tool when reaming before implantation. The sliding sleeve of the internal fixing system for the low-notch femoral neck fracture mainly comprises an upper cylindrical barrel and a lower convex body, and an upper round hole and a lower round hole which are overlapped are drilled on the outer side of the femur under the guidance of a guide pin before the sleeve is implanted into the femur. The reaming means for the upper hole is compatible with the reamer of the FNS, whereas the lower hole currently has no mating reaming means. Because the edge of the circular section of the upper cylinder passes through the center of the lower bulge section, sliding phenomenon can occur when the drill bit is used for reaming, the upper hole and the lower hole are difficult to be parallel due to no guide pin guiding during reaming, and the holes are not matched with the sliding sleeve, so that the fixing system cannot be implanted.
Disclosure of Invention
The present invention aims to provide a reaming device for a low-profile femoral neck fracture internal fixation sliding sleeve implant to address the problems mentioned in the background. In order to achieve the above purpose, the present invention provides the following technical solutions: a reaming device for low notch femoral neck fracture internal fixation sliding sleeve implants, including the director, install the drill bit on the director, install the stopper on the drill bit, the stopper is connected the stopper nut, the director includes T type holding rod, T type holding rod connecting sleeve, the metal sheet is installed to the sleeve bottom, it has arc recess to open on the metal sheet, the drill bit is installed on the sleeve.
Preferably, the sleeve comprises an upper sleeve part and a lower sleeve part, wherein the upper sleeve part and the lower sleeve part are provided with an upper guide hole and a lower guide hole, the rear end of the upper sleeve part is enlarged, the rear end of the lower sleeve part is a chamfer, and the chamfer forms an included angle of 55-65 degrees with a main shaft of the sleeve.
Preferably, an included angle of 30-40 degrees is arranged between the T-shaped holding rod and the sleeve main shaft.
Preferably, the whole cylindric that is of drill bit, drill bit one end is the cutting end that the drill bit blade constitutes, and the other end is the installation end, be equipped with the sounding scale on the installation end.
Preferably, the whole cylindric that is of stopper is inside hollow structure, link up about, the stopper left end is the limit structure of inflation, the stopper middle part is equipped with the external screw thread, the stopper cover is on the drill bit.
Preferably, the whole cylindric that is of stopper nut is inside hollow structure, link up about, stopper nut surface is equipped with the recess, stopper nut inboard is equipped with the internal thread with the external screw thread complex of stopper.
The invention has the technical effects and advantages that: the device perfects the matched tools required by the implantation of the internal fixing system for the low-notch femoral neck fracture, so that the reaming operation before the implantation of the sliding sleeve is more convenient. The use of the guide reduces sliding, improves the stability of drilling, and ensures that the hole is matched with the sliding sleeve.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a front view of the sleeve of the present invention;
FIG. 3 is a right side view of the sleeve of the present invention;
FIG. 4 is a schematic view of the installation of the drill bit and the retainer of the present invention;
FIG. 5 is a schematic view of a drill bit according to the present invention;
FIG. 6 is a schematic view of a stopper according to the present invention;
fig. 7 is a schematic view of the retainer nut of the present invention.
In the figure, 1. A guide; 2. a drill bit; 3. a limiter; 4. a retainer nut; 5.T grip; 6. a sleeve; 7. a metal plate; 8. an arc-shaped groove; 9. an upper guide hole; 10. a lower guide hole; 11. chamfering; 12. a cutting end; 13. a mounting end; 14. depth measurement scales; 15. a limit structure; 16. an external thread; 17. a groove; 18. a guide pin; 19. the upper part of the sleeve; 20. the lower part of the sleeve.
Detailed Description
In order that the manner in which the above-recited features, advantages, objects and advantages of the present invention are attained and can be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings, in which the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected or detachably connected, or integrally or mechanically connected, or electrically connected, unless otherwise explicitly stated and defined; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements.
Example 1
The reaming device for implanting the low-notch femoral neck fracture internal fixation sliding sleeve comprises a guider 1 and a drill bit 2, wherein the drill bit 2 is provided with a limiter 3, the limiter 3 is connected with a limiter nut 4, the guider 1 comprises a T-shaped holding rod 5, the T-shaped holding rod 5 is connected with a sleeve 6, the bottom of the sleeve 6 is provided with a metal plate 7, the metal plate 7 is provided with an arc-shaped groove 8, and the drill bit 2 is arranged on the sleeve 6.
Example 2
1-7, a reaming device for implanting a sliding sleeve for internal fixation of low-notch femoral neck fracture comprises a guider 1 and a drill bit 2, wherein the drill bit 2 is provided with a limiter 3, the limiter 3 is connected with a limiter nut 4, the guider 1 comprises a T-shaped holding rod 5, the T-shaped holding rod 5 is connected with a sleeve 6, the bottom of the sleeve 6 is provided with a metal plate 7, the metal plate 7 is provided with an arc-shaped groove 8, the arc-shaped groove 8 has the same radian as the outer side of a femur, the guider 1 can be kept in a vertical position, and the T-shaped holding rod 5 is used for installing the guider 1 in a handheld manner;
the sleeve 6 comprises an upper sleeve part 19 and a lower sleeve part 20, an upper guide hole 9 and a lower guide hole 10 are formed in the upper sleeve part 19 and the lower sleeve part 20, the rear end of the upper sleeve part 19 is enlarged, the rear end of the lower sleeve part 20 is a chamfer 11, the chamfer 11 forms an included angle of 55-65 degrees with the main shaft of the sleeve 6, the physiological radian of the outer cortex of the proximal femur can be attached more, and an included angle of 30-40 degrees is formed between the T-shaped holding rod 5 and the main shaft of the sleeve 6; the drill bit 2 may be installed in the lower pilot hole 10 to perform drilling;
the whole drill bit 2 is cylindrical, one end of the drill bit 2 is a cutting end 12 formed by drill bit blades, the other end is a mounting end 13, a depth measurement scale 14 is arranged on the mounting end 13, and the depth measurement scale 14 is used for measuring the entering depth of the drill bit 2;
the whole limiter 3 is cylindrical and is of a hollow structure, the limiter is penetrated left and right, the left end of the limiter 3 is of an expanded limiting structure 15, the middle part of the limiter 3 is provided with an external thread 16, and the limiter 3 is sleeved on the drill bit 6; the whole stopper nut 4 is cylindric, is inside hollow structure, link up about, and stopper nut 4 surface is equipped with recess 17, and recess 17 can increase the frictional force of gripping, and stopper nut 4 inboard is equipped with the internal thread, cooperates external screw thread 16 to realize the threaded connection of stopper 15 and stopper nut 4.
The technological process and working principle of the invention are as follows: as shown in fig. 1, a limiter 3 is sleeved along a drill bit 2, and a limiter nut 4 and the threads of the limiter 3 are completely screwed up to complete the installation of the reamer; the compatible traditional FNS reamer is used for drilling an upper hole on a bone and reserving a middle guide pin 18, the chamfer 11 of the guide device 1 faces the outer side of the femur, the upper guide hole 9 passes through the guide pin 18 and moves towards the femur, the arc-shaped groove 8 of the metal plate 7 is propped against the femur, the chamfer 11 is completely attached to the outer side of the femur, the reamer is connected with a medical bone drill, the lower hole is drilled along the lower guide hole 10 of the guide device 1, the limiting structure 15 of the limiter 3 is contacted with the lower guide hole 10 in the drilling process, the limiter 3 is matched with the limiter nut 4 to limit, the directional drilling of the drill bit 2 is realized, and the depth of drilling can be displayed by the depth measurement scale 14.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.

Claims (6)

1. Reaming device for implantation of a low-notch femoral neck fracture internal fixation sliding sleeve, comprising a guide, characterized in that: install the drill bit on the director, install the stopper on the drill bit, the stopper nut is connected to the stopper, the director includes T type holding rod, T type holding rod connecting sleeve, the metal sheet is installed to the sleeve bottom, it has arc recess to open on the metal sheet, the drill bit is installed on the sleeve.
2. A reaming device for use in a low profile femoral neck fracture internal fixation sliding sleeve implant as defined in claim 1, wherein: the sleeve comprises a sleeve upper portion and a sleeve lower portion, an upper guide hole and a lower guide hole are formed in the sleeve upper portion and the sleeve lower portion, the rear end of the sleeve upper portion is expanded, the rear end of the sleeve lower portion is a chamfer, and the chamfer and a main shaft of the sleeve form an included angle of 55-65 degrees.
3. A reaming device for use in a low profile femoral neck fracture internal fixation sliding sleeve implant as defined in claim 1, wherein: an included angle of 30-40 degrees is arranged between the T-shaped holding rod and the sleeve main shaft.
4. A reaming device for use in a low profile femoral neck fracture internal fixation sliding sleeve implant as defined in claim 1, wherein: the drill bit is cylindrical as a whole, one end of the drill bit is a cutting end formed by drill bit blades, the other end of the drill bit is a mounting end, and depth measurement scales are arranged on the mounting end.
5. A reaming device for use in a low profile femoral neck fracture internal fixation sliding sleeve implant as defined in claim 1, wherein: the whole cylindric that is of stopper is inside hollow structure, link up about, the stopper left end is the limit structure of inflation, the stopper middle part is equipped with the external screw thread, the stopper cover is on the drill bit.
6. A reaming device for use in a low profile femoral neck fracture internal fixation sliding sleeve implant as defined in claim 5, wherein: the whole cylindric that is of stopper nut is inside hollow structure, link up about, stopper nut surface is equipped with the recess, stopper nut inboard be equipped with stopper's external screw thread complex internal thread.
CN202310417960.7A 2023-04-18 2023-04-18 Reaming device for implanting low-notch femoral neck fracture internal fixation sliding sleeve Pending CN116370019A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310417960.7A CN116370019A (en) 2023-04-18 2023-04-18 Reaming device for implanting low-notch femoral neck fracture internal fixation sliding sleeve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310417960.7A CN116370019A (en) 2023-04-18 2023-04-18 Reaming device for implanting low-notch femoral neck fracture internal fixation sliding sleeve

Publications (1)

Publication Number Publication Date
CN116370019A true CN116370019A (en) 2023-07-04

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ID=86969240

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310417960.7A Pending CN116370019A (en) 2023-04-18 2023-04-18 Reaming device for implanting low-notch femoral neck fracture internal fixation sliding sleeve

Country Status (1)

Country Link
CN (1) CN116370019A (en)

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