CN113730051B - Combined femur stem installer - Google Patents
Combined femur stem installer Download PDFInfo
- Publication number
- CN113730051B CN113730051B CN202111151003.1A CN202111151003A CN113730051B CN 113730051 B CN113730051 B CN 113730051B CN 202111151003 A CN202111151003 A CN 202111151003A CN 113730051 B CN113730051 B CN 113730051B
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- bolt
- knob
- angle
- femoral stem
- hole
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- 210000000689 upper leg Anatomy 0.000 title description 2
- 238000009434 installation Methods 0.000 claims abstract description 14
- 238000010009 beating Methods 0.000 claims abstract description 11
- 230000005389 magnetism Effects 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 9
- 230000001154 acute effect Effects 0.000 abstract description 5
- 230000009471 action Effects 0.000 description 5
- 210000004394 hip joint Anatomy 0.000 description 5
- 210000000988 bone and bone Anatomy 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000008407 joint function Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 206010057178 Osteoarthropathies Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003412 degenerative effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
Classifications
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- 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
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2/4607—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of hip 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
- A61F2/38—Joints for elbows or knees
- A61F2/3859—Femoral components
-
- 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
- A61F2/4601—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for introducing bone substitute, for implanting bone graft implants or for compacting them in the bone cavity
-
- 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
- A61F2002/4681—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor by applying mechanical shocks, e.g. by hammering
Abstract
The invention discloses a combined femoral stem installer, which is characterized by comprising the following components: the bolt is used for assisting in adjusting the installation angle of the femoral stem, and one end of the bolt is provided with an inner angle hole; the beating and pulling device body acts on the bolt and is used for adjusting the installation angle of the femoral stem, one end of the beating and pulling device body is provided with a spherical angle, and the spherical angle corresponds to the inner angle hole; and the knob structure is magnetic and is used for holding the bolt. In the invention, the alignment process between the bolt and the puller body is more convenient and accurate; when the femoral stem is adjusted, an acute angle can be formed between the puller body and the bolt, so that a large tuberosity can be avoided, a narrow operation space is adapted, and operation by an operator is facilitated; and the knob structure with magnetism is arranged, so that the bolt is conveniently placed on the femoral stem, and meanwhile, the bolt is prevented from falling off or falling off in an operation before being installed.
Description
Technical Field
The invention relates to the technical field of surgical instruments, in particular to a combined femoral stem installer.
Background
With the increasing degree of aging of the world population, senile degenerative osteoarthropathy becomes a common and frequently occurring disease. After the joints are structurally changed due to various reasons, only partial pain symptoms can be relieved by using the drug treatment, and the joint functions are difficult to improve. The artificial joint replacement can achieve the purposes of relieving pain, stabilizing joints, correcting deformity, improving joint functions and the like, so that the femoral stem is a common prosthesis component for artificial hip joint replacement, and currently used femoral stem prostheses are generally divided into a combined type and a single type, wherein the combined femoral stem has wide market demands due to various combined forms and wide application. However, for the current mounting tool of combination formula femoral stem prosthesis, for a columnar beating and pulling ware and lie in its platykurtic structure of one end, the afterbody of bolt is provided with a word inslot on the corresponding femoral stem, platykurtic structure stretches into a word inslot for rotate the bolt, perhaps beat and pull out ware afterbody for adjust the angle of femoral stem, this structure exists a great deal of defect now:
in the existing installation scheme, because the bolts are needed to be held by hands, the bolts are screwed into the neck parts of the femoral stems, so that the length of the bolts is long, when the femoral stems and the bolts are placed in the hip joints, the bolts are easy to interfere with the large tuberosities, so that the installation of the prosthesis test mould is inconvenient, and a large amount of large tuberosity bone is needed to be removed for the smooth placement of the bolts, which is disadvantageous to the operation progress and postoperative recovery;
secondly, after the femoral stem and the bolt are placed into the hip joint, the bolt needs to be unscrewed, the angle of the femoral stem is adjusted by acting on the bolt through the puller, in the traditional structure, the puller is difficult to align the bolt, so that the operation is difficult, the overlong bolt is wrapped by the large tuberosity soft tissue, the operation field is affected, and the operation difficulty is further increased.
Based on the above, the invention discloses a combined femoral stem installer for solving the above problems.
Disclosure of Invention
The invention aims to provide a combined femoral stem installer which solves the problems in the prior art.
In order to solve the technical problems, the invention provides the following technical scheme: .
Compared with the prior art, the invention has the following beneficial effects: a modular femoral stem installer comprising: the bolt is used for assisting in adjusting the installation angle of the femoral stem, and one end of the bolt is provided with an inner angle hole; the beating and pulling device body acts on the bolt and is used for adjusting the installation angle of the femoral stem, one end of the beating and pulling device body is provided with a spherical angle, and the spherical angle corresponds to the inner angle hole; and the knob structure is magnetic and is used for holding the bolt.
Preferably, the inner corner hole is a prism hole with one end closed, the side edge of the prism hole is a smooth curve, the spherical corner is a prism with one end closed, the side edge of the prism is a smooth curve, the open end of the inner corner hole is smoothly connected with the tail end of the bolt, a first arc convex surface is formed at the joint, the open end of the spherical corner is smoothly connected with the puller body, and a first arc concave surface is formed at the joint.
Preferably, the closing end of the inner angle hole is provided with a second arc concave surface, the second arc concave surface is smoothly connected with the closing end of the inner angle hole, the closing end of the spherical angle is provided with a second arc convex surface, and the second arc convex surface is smoothly connected with the closing end of the spherical angle.
Preferably, the head of the bolt is provided with a third arc convex surface, and the third arc convex surface is smoothly connected with the middle section of the bolt.
Preferably, the knob structure includes: a first knob body; a first column located at one end of the first knob body, the first column and the inner angle Kong Qige; and the magnet is positioned in the first knob body.
Preferably, the first knob body is a hollow cylinder with one end open, one end of the first knob body, which is close to the first cylinder, is provided with a ring groove, the magnet is positioned in the ring groove, and a C-shaped ring buckle is further arranged in the ring groove.
Preferably, the knob structure includes: the second knob body is positioned at one end of the puller body, which is far away from the spherical angle, and is a hollow cylinder; the second knob comprises a second knob body and an elastic body, wherein the second knob body is arranged in the second knob body, the elastic body has elasticity to the second knob body, the second knob body is connected with the inner angle Kong Qige, a magnetic body is arranged in the second knob body, and the second knob body is contracted in the second knob body by a control mechanism.
Preferably, the control mechanism includes: the annular piece is sleeved outside the second knob body, a plurality of spring arms extend out from one side of the annular piece, and the spring arms penetrate through the side wall of the second knob body to contact with the second cylinder; the locking ring is sleeved outside the second knob body and is in threaded connection with the second knob body, and the inner wall of the locking ring is in contact with the spring arm.
Preferably, the second knob body includes: the body comprises a first body and a second body which are fixedly connected, and a step is formed at the joint of the first body and the second body; the through holes are positioned in the body and extend to the outer edges of the two ends of the body; the grooves are positioned on the side wall of the second body, and one end of each groove extends to the outer edge of the second body to communicate the inside with the outside of the second body; the ring-shaped piece and the locking ring are sleeved on the second body, and the elastic arm is positioned in the slot.
Preferably, the second cylinder comprises a cylinder body and a plurality of protruding blocks, the protruding blocks extend into the grooves and are in contact with the spring arms, and the cylinder body is fixedly connected with the protruding blocks.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the combined femoral stem installer disclosed by the invention, the inner angle hole is formed in one end of the bolt, the spherical angle is formed in one end of the puller body, when the bolt is placed into a human body along with the femoral stem, the spherical angle is placed into the inner angle hole, so that the tightness of the bolt can be conveniently adjusted by the puller body, the bolt can be conveniently knocked, the installation angle of the femoral stem can be further adjusted, the scheme of arranging the straight groove at the tail part of the bolt in the traditional design is replaced, and the alignment process between the bolt and the puller body is more convenient and accurate;
2. according to the invention, the side edges provided with the inner angle holes are smooth curves, the side edges of the spherical angles are also smooth curves, the open ends of the inner angle holes are smoothly connected with the tail ends of the bolts, a first arc convex surface is formed at the connection part, the open ends of the spherical angles are smoothly connected with the beater body, and a first arc concave surface is formed at the connection part, so that when the beater body drives the bolts to rotate or adjusts the femoral handles, an acute angle can be formed between the beater body and the bolts, thereby avoiding a large tuberosity, adapting to a narrow operation space and facilitating operation of operators;
3. the invention is provided with the magnetic knob structure for holding the bolt, so that the bolt is conveniently placed on the femoral stem, the bolt is prevented from falling off or falling off in an operation before being installed, and the length of the bolt can be designed to be shorter because the bolt is not required to be held by hands, thereby reducing the removal amount of the greater tuberosity bone in the operation process, and having important significance for the operation process and the subsequent recovery of patients;
4. in the invention, a second scheme of the knob structure is designed, the knob structure is fixedly connected to one end of the puller body far away from the spherical angle, so that the number of parts is reduced, the operation tool is prevented from being complicated, the second column is ejected out of the second knob body when the bolt is required to be clamped, and the second column is required to be retracted into the second knob body when the bolt is required to be knocked.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a front view of a bolt in embodiment 1 of the present invention;
FIG. 2 is a perspective view of a bolt in embodiment 1 of the present invention;
FIG. 3 is a front view of the extractor body of embodiment 1 of the present invention;
FIG. 4 is a detailed view of embodiment 1 of the present invention at A;
FIG. 5 is a front view showing the structure of the knob in embodiment 1 of the present invention;
FIG. 6 is a sectional view showing the structure of the knob in embodiment 1 of the present invention;
FIG. 7 is a perspective view of the extractor body of embodiment 2 of the present invention;
FIG. 8 is a cross-sectional view of a knob structure A-A in embodiment 2 of the present invention;
FIG. 9 is a sectional view of a knob structure B-B in embodiment 2 of the present invention;
fig. 10 is a perspective view of the body in embodiment 2 of the present invention;
in the figure:
the bolt 1, the inner angle hole 11, the side edge 111 of the prismatic hole, the first arc convex surface 12, the second arc concave surface 13 and the third arc convex surface 14;
the extractor body 2, a spherical angle 21, a side edge 211 of a prism, a first arc concave surface 22 and a second arc convex surface 23;
a first knob body 31, a first column 32, a magnet 33, a ring groove 34 and a C-shaped ring buckle 35;
the second knob body 41, the body 411, the first body 4111, the second body 4112, the through hole 412, the slot 413, the step 414, the second cylinder 42, the cylinder body 421, the protruding block 422, the elastic body 43, the magnetic body 44, the control mechanism 45, the ring member 451, the spring arm 452, and the locking ring 453.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1: as shown in fig. 1 to 6, the present embodiment provides an optimal solution of a combined femoral stem installer, which includes a bolt 1, a beater body 2 and a knob structure, wherein the bolt 1 is screwed to the neck of a femoral stem, when the femoral stem is placed in a hip joint, the beater body 2 can be acted on the bolt 1 to adjust the installation angle of the femoral stem, the knob structure has magnetism to hold the bolt 1, so that the bolt 1 is conveniently placed on the femoral stem, and meanwhile, the bolt 1 is prevented from falling off or falling off in an operation before installation, and because the bolt 1 does not need to be held by a human hand, the length of the bolt 1 can be designed to be shorter, and further, the removal amount of large bone can be reduced in the operation process, which is significant for the operation process and the subsequent recovery of a patient;
further, one end of the bolt 1 is provided with the internal angle hole 11, one end of the puller body 2 is provided with the spherical angle 21, the spherical angle 21 corresponds to the internal angle hole 11, when the bolt 1 is placed into a human body along with a femoral stem, the spherical angle 21 is placed into the internal angle hole 11, the puller body 2 can conveniently adjust the tightness of the bolt 1, the bolt 1 can be conveniently knocked, the installation angle of the femoral stem can be conveniently adjusted, the scheme that a straight groove is arranged at the tail part of the bolt in the traditional design is replaced, and the alignment process between the bolt 1 and the puller body 2 is more convenient and accurate;
further, the inner angle hole 11 is a prism hole with one end closed, the side edge 111 of the prism hole is a smooth curve, the spherical angle 21 is a prism with one end closed, and the side edge 211 of the prism is a smooth curve, so that when the extractor body 2 drives the bolt 1 to rotate or adjusts the femoral stem, an acute angle can be formed between the extractor body 2 and the bolt 1, namely, the spherical angle 21 and the inner angle hole 11 can still be engaged under the condition of different axes, thereby avoiding the large tuberosity, adapting to a narrow operation space and facilitating the operation of an operator;
further, in order to smoothly form an acute angle between the beater body 2 and the bolt 1, a smooth connection is provided between the open end of the internal angle hole 11 and the tail end of the bolt 1, a first arc convex surface 12 is formed at the connection position, the open end of the spherical angle 21 is smoothly connected with the beater body 2, and a first arc concave surface 22 is formed at the connection position, so that a space is reserved for the joint position of the beater body 2 and the bolt 1;
further, beat and pull out ware body 2 also can regard as to beat the use, in order to avoid bolt 1 to beat the time being damaged, be provided with second arc concave surface 13 at the binding off end of interior angle hole 11, second arc concave surface 13 and the binding off end smooth connection of interior angle hole 11, the binding off end of spherical angle 21 is provided with second arc convex surface 23, second arc convex surface 23 and the binding off end smooth connection of spherical angle 21 for beat when pulling out ware body 2 beat bolt 1, the atress area is great, the atress is comparatively even, can protect bolt 1.
Further, the head of the bolt 1 is provided with a third arc convex surface 14, the third arc convex surface 14 is smoothly connected with the middle section of the bolt 1, and the third arc convex surface 14 has a guiding function, so that the bolt 1 can conveniently and smoothly extend into the neck of the femoral stem.
Further, the knob structure specifically includes a first knob body 31, a first column body 32, and a magnet 33, where the exterior of the first knob body 31 is provided with a pattern to increase resistance, so as to facilitate the holding by a person, the first column body 32 is fixed at one end of the first knob body 31, integrally formed with the first knob body 31, and the first column body 32 is engaged with the inner angle hole 11, and can realize holding of the bolt 1 when extending into the inner angle hole 11, and the magnet 33 is located in the first knob body 31 to generate suction force to the bolt 1, thereby realizing stable holding of the bolt 1;
specifically, the first knob body 31 is a hollow cylinder with one open end, the first cylinder 32 is located at the closed end of the first knob body 31, one end, close to the first cylinder 32, of the first knob body 31 is provided with a ring groove 34, the magnet 33 is located in the ring groove 34, a C-shaped ring buckle 35 is further arranged in the ring groove 34 and used for clamping the magnet 33 in the ring groove 34, the knob structure is used for clamping the bolt 1, the rotary knob structure is used for replacing the rotary bolt 1, the bolt 1 can be conveniently screwed into a femoral stem, the holding section of the bolt 1 can be subtracted, and the length of the bolt 1 is integrally shortened.
Example 2: as shown in fig. 7 to 10, the present embodiment provides a second scheme of a knob structure based on the bolt 1 and the extractor body 2 in embodiment 1, specifically, the knob structure is fixedly connected to one end of the extractor body 2 far away from the spherical angle 21, so that the extractor body 2 and the knob structure can be combined into a whole, thereby reducing the number of parts, avoiding the complexity of the surgical tool, or avoiding the loss of the surgical tool;
further, the knob structure includes a second knob body 41, a second post 42 and an elastic body 43, wherein the second knob body 41 is located at one end of the extractor body 2 far away from the spherical angle 21, and is fixedly connected with the handle of the extractor body 2, and forms a part of the handle, the second knob body 41 is a hollow post, the second post 42 and the elastic body 43 are located in the second knob body 41, the elastic body 43 generates elastic force to the second post 42, when no other external force acts, the second post 42 can be ejected out of the second knob body 41 by the elastic force of the elastic body 43, the second post 42 is engaged with the inner angle hole 11 for holding the bolt 1, a magnetic body 44 is arranged in the second post 42 for stabilizing the holding bolt 1, the second post 42 is contracted in the second knob body 41 by the control mechanism 45, and when the external force is applied to the control mechanism 45, the elastic force of the elastic body 43 can be released, preferably, the elastic body 43 is a spring;
further, the control mechanism 45 includes an annular member 451 and a locking ring 453, the annular member 451 is sleeved outside the second knob body 41, a plurality of spring arms 452 extend from one side of the annular member 451, the spring arms 452 are integrally formed with the annular member 451, the spring arms 452 penetrate through the side wall of the second knob body 41 to contact with the second column body 42, the locking ring 453 is sleeved outside the second knob body 41 and is in threaded connection with the second knob body 41, the inner wall of one side of the locking ring 453 contacts with the spring arms 452, the spring arms 452 are tightly pressed, so that the spring arms 452 generate pretightening force on the second column body 42, and further, the second column body 42 is locked in the second knob body 41, in this state, the two knob body 41 can be knocked, the locking ring 453 is rotated, when the locking ring 453 is separated from the spring arms 452, the pressing action of the locking ring 453 on the spring arms 452 is eliminated, and the second column body 42 can extend out of the second knob body 41, and the action of clamping bolt 1 is performed;
further, the second knob body 41 includes a body 411, a through hole 412 and a plurality of slots 413, wherein the body 411 includes a first body 4111 and a second body 4112 which are integrally formed, a step 414 is formed at a joint of the first body 4111 and the second body 4112, the through hole 412 is formed in the body and extends to outer edges of two ends of the body 411, the slots 413 are located on a side wall of the second body 4112, the inside and outside of the second body 4112 are communicated, one end of each slot 413 extends to an outer edge of the second body 4112, the other end extends to the step 414, the second column 42 and the elastic body 43 are located in the through hole 412, the annular member 451 and the locking ring 453 are sleeved on the second body 4112, and the elastic arm 452 is located in the slot 413.
Further, the second post 42 includes a post body 421 and a plurality of protruding blocks 422, the protruding blocks 422 extend into the slots 413, contact with the spring arms 452, and the post body 421 and the protruding blocks 422 are integrally formed, when the second post 42 extends out of the second knob body 41, the protruding blocks 422 fall on the steps 414, so that the second post 42 is prevented from completely falling out of the second knob body 41.
The working principle of the invention is as follows: firstly, a knob structure is used for holding a bolt 1, then the knob structure is separated from the bolt 1, the bolt 1 is screwed into the neck of a femoral stem, then the femoral stem is placed in a hip joint together with the bolt 1, a beater body 2 is stretched into an operation part, a spherical angle 21 is stretched into an inner angle hole 11, the bolt 1 is held again, meanwhile, in order to avoid interference with a tuberosity, the beater body 2 is rotated, an acute angle is formed between the beater body 2 and the bolt 1, even if the spherical angle 21 and the inner angle hole 11 are in a state of being different from each other, the beater body 2 is rotated, the bolt 1 is unscrewed, a knocking hammer is used for knocking the tail of the beater body 2, acting force is transmitted to the femoral stem through the beater body 2 and the bolt 1, and the femoral stem is subjected to angle adjustment.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A modular femoral stem installer comprising:
the bolt is used for assisting in adjusting the installation angle of the femoral stem, one end of the bolt is provided with an inner angle hole, the inner angle hole is a prismatic hole with one end closed up, and the side edge of the prismatic hole is a smooth curve;
the device comprises a beating and pulling device body, a pressing and pulling device body and a pressing device body, wherein the beating and pulling device body acts on a bolt and is used for adjusting the installation angle of a femoral stem, one end of the beating and pulling device body is provided with a spherical angle, the spherical angle is a prism with one end being closed, the side edge of the prism is a smooth curve, and the spherical angle corresponds to the inner angle hole;
a knob structure having magnetism for holding a bolt, the knob structure comprising: a first knob body; the first column body is positioned at one end of the first knob body, and the first column body and the inner angle Kong Qige; and a magnet located within the first knob body.
2. A modular femoral stem installer according to claim 1 wherein: the open end of the inner angle hole is smoothly connected with the tail end of the bolt, a first arc convex surface is formed at the joint, the open end of the spherical angle is smoothly connected with the puller body, and a first arc concave surface is formed at the joint.
3. A modular femoral stem installer as defined in claim 2 wherein: the closing end of the inner angle hole is provided with a second arc concave surface, the second arc concave surface is in smooth connection with the closing end of the inner angle hole, the closing end of the spherical angle is provided with a second arc convex surface, and the second arc convex surface is in smooth connection with the closing end of the spherical angle.
4. A modular femoral stem installer according to any one of claims 1 to 3 wherein: the head of the bolt is provided with a third arc convex surface which is smoothly connected with the middle section of the bolt.
5. A modular femoral stem installer according to claim 1 wherein: the first knob body is a hollow cylinder with one end open, one end, close to the first cylinder, of the first knob body is provided with a ring groove, the magnet is located in the ring groove, and a C-shaped ring buckle is further arranged in the ring groove.
6. A modular femoral stem installer comprising:
the bolt is used for assisting in adjusting the installation angle of the femoral stem, one end of the bolt is provided with an inner angle hole, the inner angle hole is a prismatic hole with one end closed up, and the side edge of the prismatic hole is a smooth curve;
the device comprises a beating and pulling device body, a pressing and pulling device body and a pressing device body, wherein the beating and pulling device body acts on a bolt and is used for adjusting the installation angle of a femoral stem, one end of the beating and pulling device body is provided with a spherical angle, the spherical angle is a prism with one end being closed, the side edge of the prism is a smooth curve, and the spherical angle corresponds to the inner angle hole;
knob structure, knob structure has magnetism for hold the bolt, knob structure connect in beat and pull out the ware body keep away from the one end at spherical angle, knob structure includes: the second knob body is positioned at one end of the puller body, which is far away from the spherical angle, and is a hollow cylinder; the second knob comprises a second knob body and an elastic body, wherein the second knob body is arranged in the second knob body, the elastic body has elasticity to the second knob body, the second knob body is connected with the inner angle Kong Qige, a magnetic body is arranged in the second knob body, and the second knob body is contracted in the second knob body by a control mechanism.
7. The combination femoral stem installer of claim 6 wherein the control mechanism comprises:
the annular piece is sleeved outside the second knob body, a plurality of spring arms extend out from one side of the annular piece, and the spring arms penetrate through the side wall of the second knob body to contact with the second cylinder;
the locking ring is sleeved outside the second knob body and is in threaded connection with the second knob body, and the inner wall of the locking ring is in contact with the spring arm.
8. A modular femoral stem installer according to claim 7 wherein: the second knob body includes:
the body comprises a first body and a second body which are fixedly connected, and a step is formed at the joint of the first body and the second body;
the through holes are positioned in the body and extend to the outer edges of the two ends of the body;
the grooves are positioned on the side wall of the second body, and one end of each groove extends to the outer edge of the second body to communicate the inside with the outside of the second body;
the ring-shaped piece and the locking ring are sleeved on the second body, and the elastic arm is positioned in the slot.
9. A modular femoral stem installer according to claim 8 wherein: the second cylinder comprises a cylinder body and a plurality of extending blocks, the extending blocks extend into the grooves and are in contact with the spring arms, and the cylinder body is fixedly connected with the extending blocks.
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| CN202111151003.1A CN113730051B (en) | 2021-09-29 | 2021-09-29 | Combined femur stem installer |
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| CN202111151003.1A CN113730051B (en) | 2021-09-29 | 2021-09-29 | Combined femur stem installer |
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| CN113730051B true CN113730051B (en) | 2024-02-09 |
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| US6171342B1 (en) * | 1996-07-23 | 2001-01-09 | Depuy Orthopaedics, Inc. | Medical fastening system |
| CN201394096Y (en) * | 2009-03-31 | 2010-02-03 | 武峰 | Easy-to-pull artificial hip joint transposing prosthesis handle and connector |
| CN102848336A (en) * | 2011-06-29 | 2013-01-02 | 志拓有限公司 | Spanner with hexagonal ball end |
| CN210009185U (en) * | 2019-02-15 | 2020-02-04 | 天衍医疗器材有限公司 | Detachable hip joint prosthesis beating and pulling device |
| CN212415993U (en) * | 2019-08-07 | 2021-01-29 | 天津正天医疗器械有限公司 | Hip joint femoral stem, hip joint prosthesis and hip joint replacement system |
| CN113367860A (en) * | 2021-05-27 | 2021-09-10 | 北京力达康科技有限公司 | Femoral stem prosthesis beating and pulling device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11717413B2 (en) * | 2018-06-11 | 2023-08-08 | Desarrollos Biomecanicos Innovason S.L. | Hip or shoulder prosthesis and placement instruments |
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2021
- 2021-09-29 CN CN202111151003.1A patent/CN113730051B/en active Active
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|---|---|---|---|---|
| US6171342B1 (en) * | 1996-07-23 | 2001-01-09 | Depuy Orthopaedics, Inc. | Medical fastening system |
| CN201394096Y (en) * | 2009-03-31 | 2010-02-03 | 武峰 | Easy-to-pull artificial hip joint transposing prosthesis handle and connector |
| CN102848336A (en) * | 2011-06-29 | 2013-01-02 | 志拓有限公司 | Spanner with hexagonal ball end |
| CN210009185U (en) * | 2019-02-15 | 2020-02-04 | 天衍医疗器材有限公司 | Detachable hip joint prosthesis beating and pulling device |
| CN212415993U (en) * | 2019-08-07 | 2021-01-29 | 天津正天医疗器械有限公司 | Hip joint femoral stem, hip joint prosthesis and hip joint replacement system |
| CN113367860A (en) * | 2021-05-27 | 2021-09-10 | 北京力达康科技有限公司 | Femoral stem prosthesis beating and pulling device |
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| CN113730051A (en) | 2021-12-03 |
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