CN113974761A - Auxiliary device for femoral side medullary cavity file of hip joint - Google Patents
Auxiliary device for femoral side medullary cavity file of hip joint Download PDFInfo
- Publication number
- CN113974761A CN113974761A CN202111441996.6A CN202111441996A CN113974761A CN 113974761 A CN113974761 A CN 113974761A CN 202111441996 A CN202111441996 A CN 202111441996A CN 113974761 A CN113974761 A CN 113974761A
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- hook
- connecting rod
- segment
- intramedullary canal
- elastic connecting
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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
- A61B17/1659—Surgical rasps, files, planes, or scrapers
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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
- A61B17/1666—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 acetabulum
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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)
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- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a femoral side medullary cavity filing auxiliary device of hip joint, a handle; an actuating portion rotatable relative to the handle; a hook rotatably disposed at a distal end of the handle; the elastic connecting rod is arranged between the actuating part and the clamping hook, and two ends of the elastic connecting rod are respectively hinged with the actuating part and the clamping hook; the actuating part, the elastic connecting rod and the hook are configured to push the hook to deflect when the actuating part is actuated; the elastic connecting rod is formed by bending a straight connecting rod which has the width of 6.6-7.5 mm, the thickness of 1.6-2.3 mm, the length of 69.6-70.5 mm and is made of 17-4 stainless steel, and the bending mode of the elastic connecting rod is as follows: one end of the straight connecting rod is fixed, and the other end of the straight connecting rod rotates 3.5-7.5 degrees by taking the fixed end as an axis. Through the improvement to the material, size, shape of elastic connecting rod, improve the elasticity and the fatigue resistance ability of elastic connecting rod, prolonged the life of holding device.
Description
Technical Field
The invention relates to an orthopedic joint implantation surgical instrument, in particular to an auxiliary device for a femoral side medullary cavity file of a hip joint.
Background
In hip replacement surgery, a medullary cavity file is used to file the femoral medullary cavity for implantation of a femoral stem prosthesis. When filing is performed using a medullary cavity file, the medullary cavity file needs to be held by a holding device. The intramedullary cavity file holding device generally comprises a handle, an actuating part, an elastic connecting rod and a clamping hook, wherein the actuating part can rotate relative to the handle, the clamping hook is rotatably arranged at the front end of the handle, and the elastic connecting rod transmits motion between the actuating part and the clamping hook. When the actuating part is rotated, the elastic connecting rod drives the hook to rotate, so that the hook hooks the medullary cavity file connected to the far end of the device. In the locked state of the mechanism, the hook is firmly held by the elastic force generated by the compression of the elastic connecting rod.
The quality of the performance of the medullary cavity file holding device is determined by the elastic connecting rod. The elastic connecting rod needs to be compressed repeatedly, and the pressure transmitted by the clamping hook needs to be borne in the process of knocking the device, so that the requirements on the elasticity and the fatigue resistance of the elastic connecting rod need to be provided.
Disclosure of Invention
In order to solve at least one technical problem in the prior art, the invention provides a femoral side medullary cavity file auxiliary device for a hip joint.
A femoral side medullary cavity file auxiliary device of hip joint, a handle; an actuating portion rotatable relative to the handle; a hook rotatably disposed at a distal end of the handle; the elastic connecting rod is arranged between the actuating part and the clamping hook, and two ends of the elastic connecting rod are respectively hinged with the actuating part and the clamping hook; the actuating part, the elastic connecting rod and the hook are configured to push the hook to deflect when the actuating part is actuated; the elastic connecting rod is formed by bending a straight connecting rod which has the width of 6.6-7.5 mm, the thickness of 1.6-2.3 mm, the length of 69.6-70.5 mm and is made of 17-4 stainless steel, and the bending mode of the elastic connecting rod is as follows: one end of the straight connecting rod is fixed, and the other end of the straight connecting rod rotates 3.5-7.5 degrees by taking the fixed end as an axis.
The beneficial effects of the embodiment are as follows: through the improvement to the material, size, shape of elastic connecting rod, improve the elasticity and the fatigue resistance ability of elastic connecting rod, prolonged the life of holding device.
In some embodiments, the handle includes a first segment and a second segment connected to a proximal end of the first segment, the first segment extending distally along a path offset from a line of extension of the second segment. The second segment is offset relative to the first segment and is held by the operator for rasping so that the distal hip medullary cavity is fully displayed in the surgeon's field of view.
In some embodiments, the extension path of the second segment deviates from the extension line of the first segment by an angle of 35 ° to 45 °. This offset angle optimizes the operator's field of view.
In some embodiments, the end face of the distal end of the first section is provided with a positioning column and a through hole, and the hook is arranged behind the through hole. This embodiment provides a locating engagement structure for locating engagement of the distal end of the holding device with the intramedullary canal file. The positioning column is matched with the through hole and the column at the near end of the medullary cavity file respectively, so that the medullary cavity file is fixed in position, and the column penetrating through the through hole is hooked by the hook behind the through hole, so that the medullary cavity file is held at the far end of the device.
In some embodiments, the hook has a hook portion facing the central axis of the through hole, and the actuating portion, the elastic link, and the hook are configured such that when the actuating portion rotates toward the second section, the elastic link pushes the hook to rotate to deflect the hook portion toward the central axis of the through hole.
In some embodiments, the actuating portion is in the form of a proximally extending rod, the distal end of the actuating portion having a connecting portion, one end of which is hinged to the handle and the other end of which is hinged to the proximal end of the resilient link.
In some embodiments, the second segment and its extension line are used as a reference, and the actuating portion and the first segment are respectively disposed on both sides of the reference.
In some embodiments, the resilient link is in the shape of a resilient arc.
In some embodiments, the first section has an accommodating space with an open side, the distal end of the actuating portion, the elastic link and the hook are disposed in the accommodating space, the through hole is communicated with the accommodating space, the distal end of the actuating portion is disposed at the proximal end of the accommodating space, and the hook is disposed at the distal end of the accommodating space.
In some embodiments, the proximal end of the second segment is provided with a seat.
Drawings
FIG. 1 is a perspective view of a femoral hip intramedullary canal rasp assisting device according to an embodiment of the present invention.
FIG. 2 is a side view of a hip femoral intramedullary canal rasp aid in accordance with an embodiment of the present invention.
FIG. 3 is a longitudinal cross-sectional view of the intramedullary canal file.
Fig. 4 is a longitudinal sectional view of the femoral intramedullary canal file of the hip joint according to the embodiment of the present invention, in a state where a hook holds the intramedullary canal file.
FIG. 5 is a longitudinal cross-sectional view of the femoral intramedullary canal rasp assisting device of the hip joint according to one embodiment of the present invention, in a state that the clamping hooks release the intramedullary canal rasp.
FIG. 6 is a side view of the flexible link of the femoral hip intramedullary canal rasp aid of one embodiment of the present invention.
FIG. 7 is a side view of a straight link before bending of the flexible link in the hip femoral intramedullary canal filing aid of an embodiment of the present invention.
FIG. 8 is a front view of a straight link before bending of the flexible link in the femoral hip intramedullary canal rasp aid of one embodiment of the present invention.
FIG. 9 is a schematic view of the bending of the elastic connecting rod in the auxiliary device for filing the femoral side medullary cavity of the hip joint according to one embodiment of the present invention.
Description of the symbols:
handle 1, actuating part 2, elastic connecting rod 3, trip 4, first section 5, second section 6, reference column 7, through-hole 8, accommodation space 9, arm 10, hook part 11, first round pin 12, connecting portion 13, second round pin 14, base 15, pulp cavity file 16, post 17, hole 18, breach 19, installation department 20
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 4, the femoral side medullary cavity filing auxiliary device of the hip joint comprises a handle 1, an actuating part 2, an elastic connecting rod 3 and a clamping hook 4. With reference to fig. 4, the actuating portion 2 is rotatably connected to the handle 1, the hook 4 is rotatably disposed at a distal end of the handle 1, the elastic link 3 is disposed between the actuating portion 2 and the hook 4, and two ends of the elastic link are respectively hinged to the actuating portion 2 and the hook 4, the actuating portion 2, the elastic link 3, and the hook 4 are configured to actuate the elastic link 3 to push the hook 4 to rotate when the actuating portion 2 rotates. Referring to fig. 3, the distal end of the shaft 1 is configured to engage the proximal end of the intramedullary canal file 16, and the proximal end of the intramedullary canal file 16 is held by rotating the hook 4 by manipulating the actuator 2. The device holds a medullary cavity file 16 jointed at the far end of the device by rotating the actuating part 2 and driving the hook 4 to rotate through the elastic connecting rod 3.
Referring to fig. 6, the elastic link 3 is in an elastic arc shape. Specifically, the two ends of the elastic connecting rod 3 are provided with mounting parts 20 for respectively hinging the actuating part 2 and the clamping hook 4, and an arc-shaped part with uniform thickness and width is arranged between the two mounting parts 20. Referring to fig. 7 and 8, the elastic link is formed by bending a straight link made of 17-4 stainless steel having a width W of 6.6mm to 7.5mm, a thickness T of 1.6mm to 2.3mm, and a length Le of 69.6mm to 70.5 mm. With further reference to fig. 9, the resilient linkage is bent in the manner: one end of the straight connecting rod is fixed, and the other end of the straight connecting rod rotates by an alpha angle by taking the fixed end as an axis, wherein the degree of the alpha angle is 3.5-7.5 degrees. The length Le refers to a partial length of uniform thickness between the two mounting portions 20. Through the bending mode, the straight connecting rod is bent in an arc shape along the thickness direction. The 17-4 stainless steel is a martensitic stainless steel. Referring to fig. 4, when the hook 4 rotates to contact with the pillar 17 of the intramedullary canal file 16, the rotation of the hook 4 is limited by the pillar 17 of the intramedullary canal file 16 and cannot continue to rotate, and continuing to rotate the actuating portion 2 toward the second segment 6 will cause the two ends of the elastic connecting rod 3 to be squeezed, so that the elastic connecting rod 3 is compressed and deformed until the hook 4, the actuating portion 2 and the elastic connecting rod 3 enter a locked state, and at this time, the hook 4 is held by the elastic force of the elastic connecting rod 3 on the hook 4. Referring to FIG. 5, when the actuator 2 is rotated away from the second segment 6, the resilient linkage 3 pulls the hook 4 to rotate in the opposite direction, so that the hook 11 deflects away from the central axis of the through hole 8, thereby releasing the post 18 of the intramedullary canal file 16. Through the improvement to the material, size, shape of elastic connecting rod, improve the elasticity and the fatigue resistance ability of elastic connecting rod, prolonged the life of holding device.
Referring to fig. 2, the handle 1 includes a first section 5 and a second section 6 connected to a proximal end of the first section 5, the first section 5 extending distally along a path offset from a line L of extension of the second section 6. The operator who operates the auxiliary device is taken as a reference, the operator is close to the operator to be the near side, and the operator is far away from the operator to be the far side. In operating the aid, the physician holds the intramedullary canal file 16 at the distal end of the first segment 5 and operates with the second segment 6 in hand. The physician is located on the proximal side of the aid and, since the first segment 5 is offset from the line of extension L of the second segment 6, the medullary cavity of the hip joint at the distal end of the aid is fully displayed in the physician's visual field, ergonomically, when rasping the aid back and forth. Preferably, the first section 5 and the second section 6 are made of a metal material and have an integral structure.
In some embodiments, the extension path of the second segment 6 deviates from the extension line L of the first segment 5 by an angle of 35 ° to 45 °. This offset angle optimizes the operator's field of view.
In some embodiments, referring to fig. 1 and 4, a positioning column 7 and a through hole 8 are disposed on an end surface of the distal end of the first section 5, and the hook 4 is disposed behind the through hole 8. The central axis of the positioning column 7 and the central axis of the through hole 8 are parallel to each other and are substantially parallel to the length direction of the first section 5. Referring to fig. 4, the distal end of the first segment 5 is in positioning engagement with the proximal end of the intramedullary canal file 16 through the positioning post 7 and the through hole 8, and the intramedullary canal file 16 is held by the hook 4. Specifically, referring to FIG. 3, the proximal end of the intramedullary canal file 16 is provided with a hole 18 and a post 17 corresponding to the positioning post 7 and the through hole 8, respectively. When the distal end of the handle 1 is brought into locating engagement with the intramedullary canal file 16, the locating post 7 is inserted into the hole 18 at the proximal end of the intramedullary canal file 16 and the post 17 at the proximal end of the intramedullary canal file 16 is inserted into the through hole 8, thus achieving the engagement and location of the intramedullary canal file 16. The axial length of the through hole 8 is less than the length of the post 17 at the proximal end of the intramedullary canal file 16, and a notch 19 is formed on the outer wall of the post 17, so that the post 17 at the proximal end of the intramedullary canal file 16 can extend out from the rear end of the through hole 8, and the notch 19 on the post 17 faces the hook 4 arranged at the rear part of the through hole 8. The hook 4 rotates on the plane where the central axis of the through hole 8 is located. The hook 4 is rotated by operating the actuator 2 and hooks the notch 19 in the side wall of the post 17 at the proximal end of the intramedullary canal file 16, thereby holding the intramedullary canal file 16 at the distal end of the shaft 1.
In some embodiments, referring to fig. 1, the first section 5 has an accommodating space 9 with an open side, the distal end of the actuating portion 2, the elastic link 3 and the hook 4 are disposed in the accommodating space 9, and the through hole 8 is communicated with the accommodating space 9. Specifically, the accommodating space 9 extends along the length direction of the first section 5, the distal end of the actuating part 2 is arranged at the proximal end of the accommodating space 9, the hook 4 is arranged at the distal end of the accommodating space 9, and the elastic connecting rod 3 is arranged in the accommodating space 9. The post 17 of the intramedullary canal file 16 passes through the through hole 8 and extends into the accommodating space 9 so as to be conveniently clamped by the hook 4 at the far end of the accommodating space 9. At least one side of the receiving space is opened to facilitate assembly of the planar linkage mechanism consisting of the hook 4, the elastic link 3 and the actuating portion 2. Preferably, opposite sides of the receiving space 9 are open. For example, the first section 5 comprises a pair of spaced apart arms 10, the distal ends of the arms 10 being connected, the proximal ends of the arms 10 being connected to the distal end of the second section 6, the spacing between the two arms 10 forming a flat receiving space 9.
In some embodiments, referring to fig. 4 and 5, the hook 4 has a hook portion 11, and the hook portion 11 faces the central axis of the through hole 8 and is configured to be capable of deflecting toward the central axis of the through hole 8. The hook portion 11 is capable of hooking the post 17 of the proximal end of the intramedullary canal file 16 passing through the through hole 8 when the hook portion 11 is deflected towards the central axis of the through hole 8. The tail end of the hook 4 is hinged to the handle 1, for example, referring to fig. 4, a first pin 12 spanning the accommodating space 9 is fixed on the first section 5, and the tail end of the hook 4 is rotatably sleeved on the first pin 12. The far end of the elastic connecting rod 3 is hinged between the tail end of the hook 4 and the hook part 11.
In some embodiments, referring to fig. 4 and 5, the actuating portion 2 is in the shape of a rod extending proximally, the distal end of the actuating portion 2 has a connecting portion 13, one end of the connecting portion 13 is hinged to the handle 1, and the other end is hinged to the proximal end of the elastic link 3. A second pin 14 spanning the accommodating space 9 is arranged on the handle 1, and one end of the connecting part 13 is rotatably sleeved on the second pin 14, so that the actuating part 2 is rotatably connected with the handle 1. The connecting portion 13 is arranged at the proximal end of the receiving space 9, while the lever portion of the actuating portion 2 has substantially the same length as the second section 6 and is arranged at one side of the second section 6. Thus, the actuating portion 2 is configured as a labor-saving lever that can be rotated toward the second segment 6 or away from the second segment 6 for labor-saving actuation of the planar linkage mechanism formed by the connecting portion 13, the elastic link 3 and the hook 4, i.e., when the actuating portion 2 is rotated, the elastic link 3 pushes the hook 4 to rotate, so that the hook 4 hooks the post 17 at the proximal end of the intramedullary canal file 16. Preferably, with the second segment 6 and its extension line L as a reference, the actuation portion 2 and the first segment 5 are respectively arranged on both sides of this reference.
In some embodiments, referring to fig. 1, a base 15 is provided at the proximal end of the second section 6. The base 15 is used for the operator to knock the holding device.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (10)
1. Hip joint thighbone side pulp cavity file auxiliary device, its characterized in that includes:
a handle;
an actuating portion rotatable relative to the handle;
a hook rotatably disposed at a distal end of the handle; and
the elastic connecting rod is arranged between the actuating part and the clamping hook, and two ends of the elastic connecting rod are respectively hinged with the actuating part and the clamping hook;
the actuating portion, the resilient link, and the catch are configured such that the resilient link can urge the catch to deflect when the actuating portion is actuated;
the elastic connecting rod is formed by bending a straight connecting rod with the width of 6.6-7.5 mm, the thickness of 1.6-2.3 mm, the length of 69.6-70.5 mm and the material of 17-4 stainless steel, and the bending mode of the elastic connecting rod is as follows: one end of the straight connecting rod is fixed, and the other end of the straight connecting rod rotates 3.5-7.5 degrees by taking the fixed end as an axis.
2. The hip femoral intramedullary canal file aid of claim 1, wherein the shank comprises a first segment and a second segment connected to a proximal end of the first segment, the first segment extending distally along a path offset from a line of extension of the second segment.
3. The hip femoral intramedullary canal file aid of claim 2, wherein the path of extension of the second segment is offset from the line of extension of the first segment by an angle of 35 ° to 45 °.
4. The auxiliary device for filing the femoral side medullary cavity of the hip joint according to claim 2, wherein the end surface of the distal end of the first section is provided with a positioning column and a through hole, and the hook is arranged behind the through hole.
5. The hip femur intramedullary canal file aid of claim 4, wherein the hook has a hook portion facing the central axis of the through hole, and the actuator, the resilient link, and the hook are configured such that when the actuator rotates toward the second segment, the resilient link urges the hook to rotate causing the hook to deflect toward the central axis of the through hole.
6. The hip femur intramedullary canal file aid of any one of claims 1 to 5, wherein the actuator has a rod shape extending proximally, and a distal end of the actuator has a connecting portion, one end of which is hinged to the stem and the other end of which is hinged to the proximal end of the resilient link.
7. The hip femoral intramedullary canal file aid of claim 6, wherein the actuator portion and the first segment are disposed on opposite sides of the reference with the second segment and its extension as a reference.
8. The hip femur intramedullary canal file aid of any one of claims 1 to 5, wherein the elastic link is in the shape of a flexible arc.
9. The hip femur intramedullary canal file auxiliary device according to any one of claims 2 to 5, wherein the first segment has a laterally open receiving space therein, the distal end of the actuating portion, the elastic link and the hook are disposed in the receiving space, the through hole communicates with the receiving space, the distal end of the actuating portion is disposed at the proximal end of the receiving space, and the hook is disposed at the distal end of the receiving space.
10. The hip femur intramedullary canal file aid of any one of claims 2 to 5, wherein the proximal end of the second section is provided with a seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111441996.6A CN113974761B (en) | 2021-11-30 | 2021-11-30 | Hip joint femur lateral medullary cavity file auxiliary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111441996.6A CN113974761B (en) | 2021-11-30 | 2021-11-30 | Hip joint femur lateral medullary cavity file auxiliary device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113974761A true CN113974761A (en) | 2022-01-28 |
| CN113974761B CN113974761B (en) | 2023-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111441996.6A Active CN113974761B (en) | 2021-11-30 | 2021-11-30 | Hip joint femur lateral medullary cavity file auxiliary device |
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| CN (1) | CN113974761B (en) |
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