CN109316267B - Femoral head membrane testing tool for hip joint replacement operation - Google Patents
Femoral head membrane testing tool for hip joint replacement operation Download PDFInfo
- Publication number
- CN109316267B CN109316267B CN201811515427.XA CN201811515427A CN109316267B CN 109316267 B CN109316267 B CN 109316267B CN 201811515427 A CN201811515427 A CN 201811515427A CN 109316267 B CN109316267 B CN 109316267B
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- CN
- China
- Prior art keywords
- head
- taper
- bolt
- ball
- femoral
- 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.)
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- 238000012360 testing method Methods 0.000 title abstract description 20
- 239000012528 membrane Substances 0.000 title abstract description 15
- 210000004394 hip joint Anatomy 0.000 title abstract description 13
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 238000001356 surgical procedure Methods 0.000 claims description 11
- 238000011540 hip replacement Methods 0.000 claims description 9
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 2
- 229910001256 stainless steel alloy Inorganic materials 0.000 claims description 2
- 210000000588 acetabulum Anatomy 0.000 description 5
- 229910000851 Alloy steel Inorganic materials 0.000 description 3
- 206010024769 Local reaction Diseases 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000001624 hip Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4684—Trial or dummy prostheses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4657—Measuring instruments used for implanting artificial joints
Abstract
The invention discloses a femoral head membrane testing tool for hip joint replacement operation, which comprises: the bulb is spherical, a spherical cavity is formed in the bulb, a cylindrical hole is formed in the bottom of the bulb, and the candle star is communicated with the spherical cavity and is provided with internal threads; the taper bolt is provided with an external thread and can be screwed into the cylindrical hole, one end of the taper bolt is provided with a penetrating taper hole, and the taper bolt can be in taper fit with the taper head of the femoral stem prosthesis; the invention designs and develops a femoral head test membrane tool for hip joint replacement operation, wherein the conical head bolt is in threaded connection with the ball head, the distance between the conical head bolt and the ball head can be adjusted, namely, the distance between the conical head of a femoral stem prosthesis and the center of the ball head can be adjusted, and multiple eccentric distances can be provided to replace the functions of multiple femoral head test membranes.
Description
Technical Field
The invention relates to a tool for hip joint replacement surgery, in particular to a femoral head test membrane tool for hip joint replacement surgery.
Background
Under the same sphere diameter of the femoral head test mould in the current market, the femoral head test mould is divided into a plurality of specifications, such as 0, +2, +4, -2, -4 and the like, according to the change of the distance between the inner surface hole and the sphere center of the femoral head. In order to adjust the eccentricity between the sphere center of the femoral head and the femoral stem and the neck length, the distance between the conical hole in the femoral head prosthesis and the sphere center can be changed, the method can lead to the femoral head with the same diameter to be manufactured into a plurality of specifications of prostheses, and correspondingly, the femoral head test mould also has a plurality of specifications to be in one-to-one correspondence with the prostheses. The multiple specifications can cause complicated stock of manufacturers, and a hospital needs to prepare multiple test molds and clean and sterilize before operation, so that the space occupied by the multiple test molds is large, and doctors are troublesome to use during operation.
Disclosure of Invention
The invention designs and develops a femoral head test membrane tool for hip joint replacement operation, and the taper head bolt is in threaded connection with the ball head, so that the distance between the taper head bolt and the ball head can be adjusted, namely the distance between the taper head of the femoral stem prosthesis and the ball center of the ball head can be adjusted, and multiple eccentric distances can be provided to replace the functions of multiple femoral head test membranes.
The technical scheme provided by the invention is as follows:
a femoral head trial tool for hip replacement surgery, comprising:
the ball head is spherical, a spherical cavity is formed in the ball head, a cylindrical hole is formed in the bottom of the ball head, the cylindrical hole is communicated with the spherical cavity, and the ball head is provided with internal threads;
the taper head bolt is provided with an external thread and can be screwed into the cylindrical hole, one end of the taper head bolt is provided with a penetrating taper hole, and the taper head bolt can be matched with the taper head of the femoral stem prosthesis;
and one end of the elastic support column is detachably arranged at the top of the ball head, and the other end of the elastic support column is elastically supported at the other end of the taper head bolt.
Preferably, the top of the ball head is provided with a stepped hole.
Preferably, the device further comprises a plug which is arranged in the stepped hole.
Preferably, the elastomeric support columns include:
the spring is arranged in the stepped hole, and one end of the spring is detachably connected with the plug;
and one end of the ejector pin is detachably connected with the other end of the spring.
Preferably, the other end of the taper bolt is provided with an annular groove, a plurality of limit ball sockets are distributed in the annular groove at equal intervals, and the ejector pin can slide along the annular groove and sink into the limit ball sockets to form fixation.
Preferably, the lateral surface of the ball head is provided with a scale plane.
Preferably, the top pin is in a stepped cylindrical shape, and the other end of the top pin is hemispherical.
Preferably, the plug is of a stepped cylindrical shape.
Preferably, the device further comprises an annular handle, and the inner side of the annular handle is integrally connected with one end of the taper head bolt.
Preferably, the outer side of the annular handle is provided with a wavy pattern.
The beneficial effects of the invention are that
The invention designs and develops a femoral head test membrane tool for hip joint replacement operation, the taper head bolt is in threaded connection with the ball head, the distance between the taper head bolt and the ball head can be adjusted, namely, the distance between the taper head of a femoral stem prosthesis and the ball center of the ball head can be adjusted, multiple eccentric distances can be provided, the functions of multiple femoral head test membranes are replaced, the stock and stock of manufacturers are reduced, the cleaning and sterilizing work of hospitals are reduced, the space occupied by tools on an operating table is saved, the doctor is more convenient to use, the type and design of an artificial total hip joint are mainly the diameter of the femoral head and the design of an acetabular surface fixed with bone, the invention adopts alloy or stainless steel, the friction force of the head acetabular is small, the artificial acetabulum is stable, and the local reaction is small.
Drawings
Fig. 1 is a schematic structural view of a femoral head membrane testing tool for hip replacement surgery according to the present invention.
Fig. 2 is a schematic structural view of a ball head according to the present invention.
FIG. 3 is the present the invention is described in the bottom structure of the ball head is schematically shown.
Fig. 4 is a schematic structural view of the taper bolt according to the present invention.
Fig. 5 is a schematic view of the bottom structure of the taper bolt according to the present invention.
Fig. 6 is a schematic view of an elastomeric support column in accordance with the present invention.
FIG. 7 shows a taper bolt and a taper bolt according to the invention schematic diagram of the mating structure of elastomeric support columns.
Fig. 8 is a schematic structural diagram of a plug according to the present invention.
Fig. 9 is a schematic view of the structure of the knock pin according to the present invention.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
As shown in fig. 1, the femoral head membrane testing tool for hip replacement surgery provided by the invention comprises: ball head 100, taper bolt 200, and elastomeric support column 300.
As shown in fig. 2-4, the ball head 100 is spherical, a spherical cavity is formed in the ball head 100, a cylindrical hole 110 is formed in the bottom of the ball head 100, the cylindrical hole is communicated with the spherical cavity, and the cylindrical hole 110 is provided with internal threads; the taper bolt 200 is provided with external threads and can be screwed into the cylindrical hole 110, one end of the taper bolt 200 is provided with a penetrating taper hole 211, and the taper bolt can be in taper fit with the taper head of the femoral stem prosthesis; one end of the elastic support column 300 is detachably arranged at the top of the ball head 100, the other end of the elastic support column is elastically supported at the other end of the taper bolt 200, when the femoral stem prosthesis is used, the taper bolt 200 is screwed into the cylindrical hole 110 of the ball head 100, and the distance between the taper head of the femoral stem prosthesis and the spherical center of the ball head is adjusted by adjusting the depth of the taper bolt 200 screwed into the ball head 100.
As shown in fig. 5-6, the top of the ball head 100 has a stepped bore 102. The plug 310 is stepped and is disposed in the stepped bore. Elastomeric support columns 300 include: a spring 320 and a knock pin 330. The spring 320 is arranged in the stepped hole, and one end of the spring is detachably connected with the plug 310; the knock pin 330 is disposed in the stepped hole, and one end of the knock pin 330 is detachably coupled to the other end of the spring 320. The other end of the taper bolt 200 is provided with an annular groove 201, a plurality of limit ball sockets 202 are distributed in the annular groove 201 at equal intervals, and the ejector pins 330 can slide along the annular groove 201 and can sink into the limit ball sockets 202 to form fixation. As a preferred example, the number of the limit ball sockets 202 is 3-4, when in use, the spring 320 and the top pin 330 are placed in the stepped hole of the ball head, the taper bolt 200 is screwed into the cylindrical hole 110 of the ball head 100, the top pin 330 pushes the spring 320 to compress during rotation, the top pin 330 rotates along the annular groove 201, and when the top pin 330 is sunk into the limit ball sockets 202, the fixing is formed.
In another embodiment, as shown in fig. 7-9, the ball head 100 is spherical, a spherical cavity is formed in the ball head 100, a cylindrical hole 110 is formed in the bottom of the ball head 100, the cylindrical hole 110 is communicated with the spherical cavity, the cylindrical hole 110 is provided with internal threads, the side surface of the ball head 100 is a plane and is provided with a long groove 101 penetrating through, two ends of the long groove are provided with scale planes, the distance between the conical head of the femoral stem prosthesis and the spherical center of the ball head is adjusted and adjusted by adjusting the depth of the conical bolt 200 screwed into the ball head 100, and the depth of the conical head bolt 200 screwed into the ball head 100 is marked by scales, so that the specification of the prosthesis is obtained.
In another embodiment, the top pin 330 has a stepped cylindrical shape, and the other end of the top pin has a hemispherical shape to match the annular groove 201. Preferably, plug 310 is stepped cylindrical.
In another embodiment, in order to facilitate the screwing of the taper bolt 200 into the ball head 100, the device further comprises an annular handle 210, the inner side of which is integrally connected with the screwing end of the taper bolt 200, and the outer side of the annular handle is provided with a wave pattern in order to prevent slipping during screwing. The stepped bore above the ball head 100 mates with the plug. The stepped bore in the ball head 100 mates with the knock pin 330 and the spring 320. The threaded bore in the interior of the ball head is threadedly engaged with the outer surface of the tapered stud 200. The pin 330 moves axially within the bore of the ball head and the spring 320 reacts against the pin. The cone bolt 200 is rotated up by the threaded engagement and the top pin 330 moves within the ring groove 201 at the top of the cone bolt 200 until it is trapped within the socket of the ball 202.
As a preferred option, the ball head 100, the taper bolt 200 and the elastomeric support column 300 are all made of stainless steel or titanium alloy, and the artificial total hip joint is more in type and design, mainly the diameter of the femoral head and the design of the acetabular surface fixed with the bone. The invention selects alloy or stainless steel material to form the whole hip with thicker acetabulum and smaller diameter artificial femoral head, the friction force of the acetabulum is small, the artificial acetabulum is stable, and the local reaction is small.
The practical procedure of the femoral head membrane test tool for hip joint replacement operation is taken as an example for further explanation
The annular handle 210 of the taper bolt 200 is rotated clockwise, the taper bolt 200 is rotated and ascended, the ejector pin 330 moves in the annular groove 201 at the top of the taper bolt 200 until entering the ball socket 202 at the top of the taper bolt 200, locking is formed on the taper bolt 200, at this time, the distance between the taper hole inside the taper bolt 200 and the ball center of the ball head is reduced, and the scale of the end plane of the taper bolt 200 pointing to the ball head can be observed to judge the reduced distance.
The annular handle 210 of the taper bolt 200 is rotated anticlockwise, the taper bolt 200 is rotated and descends, the ejector pin 330 moves in the annular groove 201 at the top of the taper bolt 200 until entering the ball socket 202 at the top of the taper bolt 200, locking is formed on the taper bolt 200, at this time, the distance between the taper hole inside the taper bolt 200 and the ball center of the ball head is increased, and the scale of the end plane of the taper bolt 200 pointing to the ball head can be observed to judge the increased distance.
The invention designs and develops a femoral head test membrane tool for hip joint replacement operation, the taper head bolt is in threaded connection with the ball head, the distance between the taper head bolt and the ball head can be adjusted, namely, the distance between the taper head of a femoral stem prosthesis and the ball center of the ball head can be adjusted, multiple eccentric distances can be provided, the functions of multiple femoral head test membranes are replaced, the stock and stock of manufacturers are reduced, the cleaning and sterilizing work of hospitals are reduced, the space occupied by tools on an operating table is saved, the doctor is more convenient to use, the type and design of an artificial total hip joint are mainly the diameter of the femoral head and the design of an acetabular surface fixed with bone, the invention adopts alloy or stainless steel, the friction force of the head acetabular is small, the artificial acetabulum is stable, and the local reaction is small.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (6)
1. A femoral head jig for hip replacement surgery, comprising:
the ball head is spherical, a spherical cavity is formed in the ball head, a cylindrical hole is formed in the bottom of the ball head, the cylindrical hole is communicated with the spherical cavity, and the ball head is provided with internal threads;
the taper head bolt is provided with an external thread and can be screwed into the cylindrical hole, one end of the taper head bolt is provided with a penetrating taper hole, and the taper head bolt can be matched with the taper head of the femoral stem prosthesis;
one end of the elastic support column is detachably arranged at the top of the ball head, and the other end of the elastic support column is elastically supported at the other end of the taper head bolt;
the top of the ball head is provided with a stepped hole; the plug is arranged in the stepped hole;
the elastomeric support column includes:
a spring disposed in the stepped hole, one end of the spring is detachably connected with the plug;
the jacking pin is arranged in the stepped hole, and one end of the jacking pin is detachably connected with the other end of the spring;
the other end of the taper head bolt is provided with an annular groove, a plurality of limit ball sockets are distributed in the annular groove at equal intervals, and the ejector pin can slide along the annular groove and sink into the limit ball sockets to form fixation;
the taper bolt and the elastic support column are made of stainless steel or titanium alloy.
2. The femoral head trial tool for hip replacement surgery of claim 1 wherein the ball head side has a scale plane.
3. The femoral head jig for hip replacement surgery according to claim 2, wherein the knock pin has a stepped cylindrical shape and the other end of the knock pin has a hemispherical shape.
4. The femoral head jig for hip replacement surgery according to claim 3, wherein the plug is stepped cylindrical.
5. The femoral head jig for hip replacement surgery according to any one of claims 1 to 4, further comprising an annular handle, the inner side of which is integrally connected to one end of the countersunk head bolt.
6. The femoral head jig for hip replacement surgery according to claim 5, wherein the outside of the annular handle has a wavy pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811515427.XA CN109316267B (en) | 2018-12-12 | 2018-12-12 | Femoral head membrane testing tool for hip joint replacement operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811515427.XA CN109316267B (en) | 2018-12-12 | 2018-12-12 | Femoral head membrane testing tool for hip joint replacement operation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109316267A CN109316267A (en) | 2019-02-12 |
| CN109316267B true CN109316267B (en) | 2024-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811515427.XA Active CN109316267B (en) | 2018-12-12 | 2018-12-12 | Femoral head membrane testing tool for hip joint replacement operation |
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| CN (1) | CN109316267B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112022455A (en) * | 2020-08-27 | 2020-12-04 | 北京市春立正达医疗器械股份有限公司 | Split type femoral head prosthesis test head |
| CN112370221B (en) * | 2020-10-26 | 2022-09-30 | 天衍医疗器材有限公司 | Lumbar vertebra centrum examination mould tool system |
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| CN209437433U (en) * | 2018-12-12 | 2019-09-27 | 北京四正医疗器械有限责任公司 | A kind of hip replacement surgery femoral head examination film tool |
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| CN2345172Y (en) * | 1998-08-05 | 1999-10-27 | 贾全章 | Hip joint prothesis having protective effect |
| EP1407728A1 (en) * | 2002-10-07 | 2004-04-14 | Centerpulse Orthopedics Ltd. | Femoral head prosthesis |
| US7425214B1 (en) * | 2005-03-03 | 2008-09-16 | Howmedica Osteonics Corp. | Hip arthroplasty trialing apparatus with adjustable proximal trial and method |
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| CN108969152A (en) * | 2018-09-06 | 2018-12-11 | 北京安颂科技有限公司 | A kind of acetabular component and artificial hip joint |
| CN209437433U (en) * | 2018-12-12 | 2019-09-27 | 北京四正医疗器械有限责任公司 | A kind of hip replacement surgery femoral head examination film tool |
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| Publication number | Publication date |
|---|---|
| CN109316267A (en) | 2019-02-12 |
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